101results about How to "Guaranteed driving force" patented technology

The invention provides a lower limb powered shape righting device which comprises a waist supporting assembly and a left leg powered mechanism and a right leg powered mechanism which are the same in structure, the left leg powered mechanism and the right leg powered mechanism are symmetrically mounted on the two sides of the waist supporting assembly, and the waist supporting assembly is provided with a power module and a controller; the left leg powered mechanism is composed of a foot assembly, a shank assembly and a thigh assembly, the foot assembly is hinged to the shank assembly, the shank assembly is hinged to the thigh assembly, and the thigh assembly is hinged to the waist supporting assembly; the shape righting device further comprises an electric push rod, and the electric push rod is electrically connected with the controller; one end of the electric push rod is hinged to the shank assembly, and the other end of the electric push rod is hinged to the thigh assembly to drive the thigh assembly and the shank assembly to move relative to each other. The lower limb powered shape righting device has the advantages that the structure is stable, controllable performance is good, the lower limb powered shape righting device is portable, and a patient who is unhealthy in the lower limbs or a patient who suffers from knee, ankle and foot diseases can be assisted in conducting daily rehabilitation training independently.

A control device for a hybrid vehicle having an internal combustion engine, a generator motor, an electricity storage device, and driving force assist means. The control device has switch means that appropriately selects from and switches between travel ranges including at least a normal travel range and a charge priority range in which charging to the electricity storage device is prioritized. The control device also has threshold value increasing means that, when the charge priority range is selected by the selection means, increases a specific determination threshold value to a level higherthan that when the normal travel range is selected by the switch means.

The invention discloses a gas-blowing and slag- gathering spray gun for assisting slag-off of molten iron and a using method of the spray gun. The gas-blowing and slag-gathering spray gun comprises a gun barrel, wherein the gun barrel is provided with an opening end and a closed end; spray ports are symmetrically formed on the barrel wall, close to the closed end, of the gun barrel based on the middle axis of the gun barrel; the middle axes of the spray ports are vertical to the middle axis of the gun barrel; and the ratio of the inner diameters of the spray ports to the inner diameter of the gun barrel is (0.35-0.70):1. The gas-blowing and slag-accreting spray gun has the characteristics of being simple in structure, long in service life, stable in gas-blowing and slag-accreting operation and the like. The gas-blowing and slag-gathering spray gun disclosed by the invention is combined with the using method of the spray gun, so that the molten iron slag gathering degree can be improved, the bare area of the molten iron is increased, the erosive wear to the molten iron tank wall is small, the slag-off iron loss is low and the slag-off time is short.

The invention provides a spatial radial unlocking mechanism driven by a shape memory alloy SMA tow, a base is fixed on the bottom of the outer cover of the mechanism and an upper cover is installed onthe top, the bolt is inserted through the through hole of the upper cover and is located above the top block, a locate block and two split nuts are sleeve on that outer periphery of the bolt, the outer periphery of the two split nut is provided with a groove, a rigid clamp is arranged in the groove of the two split nuts and an H-shaped fixing frame is arranged at the closed end of the two split nuts, and an SMA shape memory alloy wire bundle is wrapped around the outer periphery of the rigid clamp and fixed on the fixing frame. The invention solves the problem that the impact of the spatial radial unlocking mechanism in the prior art is large, a spatial radial unlocking mechanism driven by shape memory alloy SMA tow is provided, which adopts the radial driving mode of shape memory alloy SMA tow, and has the advantages of low impact, large driving displacement, high driving accuracy, short unlocking time, high moving accuracy, low friction and no pollution.

The invention relates to a fluid control device, in particular to a novel electro-hydraulic servo valve. The novel electro-hydraulic servo valve comprises a shell (1), a valve element (7), a valve sleeve (2), a fixed throttling hole (5), a spraying nozzle (14), a coil (10), an armature (9), a spring pipe (12), a baffle (13), a feedback rod (19), permanent magnetic steel (8) and a pressure equalizing oil filter (11). The electro-hydraulic servo valve is characterized in that external pressure increased along with increase of submerged depth is used for equalizing pressure on the inner side and the outer side of the spring pipe (12) through the pressure equalizing oil filter (11), and the requirement for the structural strength of a cover body (6) and the spring pipe (12) is lowered. A changeable throttling device composed of the baffle (13) and the spraying nozzle (14) can increase the working stability of the electro-hydraulic servo valve and can also guarantee the driving capacity of the electro-hydraulic servo valve in deep-sea high-pressure high-viscosity fluid. The baffle (13) and the feedback rod (19) are integrally designed, and feedback moment is directly fed back to the baffle. The baffle (13) is a cylindrical baffle, and the machining difficulty of parts is lowered.

In a hybrid car, or an electric motor-driven four-wheel-drive vehicle, in which an electric motor is driven directly by an output from a generator, vehicle running performance is enhanced. The output from the generator is controlled so as to maintain a generator torque in a range, in which the vehicle does not stall. Specifically, a driving apparatus for the hybrid car includes a second generator 2 driven by an engine 1 for driving one pair of either front or rear wheels 14, 15 , an electric motor 5 driven through directly receiving the output from the second generator 2 and driving the other pair of either the front or rear wheels 14, 15 , and a four-wheel-drive control unit 6 controlling driving of the second generator 2 and the electric motor 5 . When the engine 1 is in an overloaded condition, the four-wheel-drive control unit 6 limits the output of the second generator 2.

An object of the present invention is to provide a heavy-duty pneumatic tire which has a block pattern and which is capable of improving uneven wear resistance without sacrificing wet grip performance or snow performance, and which is well suited for use in various seasons. The present invention includes block patterns employing at least three types of blocks including: a central block separated by a central longitudinal groove, a middle longitudinal groove, and a central transverse groove, a central block separated by a middle longitudinal groove, an outer a middle block (4M) divided by longitudinal grooves and intermediate transverse grooves, and an outer block divided by outer longitudinal grooves, outer transverse grooves (3S) extending from the outer longitudinal grooves to the ends of the tread, Among them, the aspect ratio of the block, the groove width ratio of the longitudinal groove and the transverse groove, the maximum width of the block, the minimum width of the block and its ratio, and the circumferential edge composition and tire axial edge composition at each wear stage and its ratio are limited within a specific range.

The invention discloses a high-tension cable de-icing machine which comprises a split type box. A de-icing high-tension cable penetrates through the box along a semicircular hole, a de-icing mechanism is arranged at one end of the box, and the de-icing mechanism comprises a geared motor, a driving gear and a driven gear, wherein the driving gear and the driven gear are meshed with each other. The driven gear is formed by combining two semicircular gears, and tools are arranged on the end face of the driven gear. A walking driving mechanism and a gear motor are arranged in the box, and an output shaft of the gear motor is connected with driving chain wheels and driven chain wheels through chains. Each driven chain path shaft is sleeved with a polyurethane wheel, and the polyurethane wheels are pressed on the high-tension cable to be de-iced to move forward in a rolling mode along the cable. The high-tension cable de-icing machine further comprises remote video collecting equipment, a lifting mechanism and a pressurizing mechanism. After the de-icing machine is hung on the cable through an insulating rod, a lower box body is driven by the lifting mechanism to be combined together with an upper box body, and the box can achieve the function of fixing other parts and the function of supporting. The de-icing machine is compact in structure, small in size, low in weight and suitable for working high above the ground.

The invention discloses a same-well extraction and injection system for medium-deep-strata terrestrial heat. The same-well extraction and injection system for medium-deep-strata terrestrial heat comprises a heat taking and heating assembly, and an underground heat extraction assembly, wherein the underground heat extraction assembly comprises a terrestrial heat well and a heat insulation pipe; theterrestrial heat well adopts a metal well wall; the metal well wall is provided with an upper-part sieve pipe and a lower-part sieve pipe at the part of a water-containing heat storage layer; a wateroutlet channel is formed in the heat insulation pipe; an annular space between the heat insulation pipe and the metal well wall forms a water inlet channel; and a packer is arranged in the water inlet channel between the upper-part sieve pipe and the lower-part sieve pipe. According to the same-well extraction and injection system for medium-deep-strata terrestrial heat, the flowing of injectionwater into the water-containing heat storage layer can be guaranteed through the action of the packer; moreover, the water-containing heat storage layer has the static pressure action of the upper part and the pumping action of the bottom simultaneously, so that the drive force of reinjection can be ensured; meanwhile, full-well-section heat taking is realized through the heat conduction of upper-part rock and lower-part convection heat exchange, so that the single-well heat taking amount is greatly increased, and drilling for a reinjection well is avoided; and moreover, the heat taking amountis greater than the heat taking amount of single-well closed heat taking, so that the utilization range of the terrestrial heat well with a low water outlet amount is expanded, and the investment risk is lowered.

A hybrid electric vehicle is equipped with an engine output system that makes the engine generate a driving force and outputs the driving force of the engine and a motor output system that makes an electric motor generate a driving force and outputs the driving force of the electric motor, and is capable of transmitting to driving wheels the driving forces outputted from the respective systems. If a failure of the motor output system is not detected, a vehicle ECU sets the gear of an automatic transmission for start-up of the vehicle to a first gear. If the failure is detected, the vehicle ECU sets the gear of the automatic transmission for start-up the vehicle to a second gear that is lower than the first gear.

The invention provides a robot for pipe gallery inspection. The robot comprises: a mounting bottom plate; tensioning devices, which are arranged on opposite sides of the mounting bottom plate and forma channel for accommodating the passage of rails inside a pipe gallery; a hub motor, which is positioned between the opposite tensioning devices, with a shaft connected with the tensioning devices, and an outer side surface abutting against the surfaces of the rails to ensure that the hub motor drives the mounting bottom plate to move along the rails; and a mounting wheel, which is arranged on the mounting bottom plate and positioned above the hub motor, wherein a surface of the rail facing away from the hub motor abuts against the mounting wheel, and the mounting wheel and the hub motor cooperate to clamp the rails. According to the robot for pipe gallery inspection, provided by the invention, the hub motor is adopted to drive the robot to walk on the rails, and the tensioning force between the hub motor and the rails is controlled through the tensioning devices, so that a driving force provided by the hub motor to the robot is ensured; and the structure is simple, the cost is low, auxiliary tools do not need to be added on climbing sections of the rails, and the workload of pipe gallery inspection is reduced.

The invention is a kind of product pushing device of automatic vending machine, it has: the upper and subjacent baffle plates which are supported at the aperture of the base board with shaft, and prominent from the aperture to product channel, and which maintains the first and the second product from low side; the link device which is used to control close and open of the baffle plates and which moves in shuttle through driving device, the device can push out the product with different diameter without changing the width of the channel, the character lies in: the revolution retainer is jointed with the link peg on the link device, it can lock the revolution of itself, it can restrain the rotation of the subjacent plate by using the retainer peg, maintains the maximal jaw opening state; the assistant retainer element prevents the rotation of the subjacent plate.

The elevator control device can prevent deterioration of the ride quality of the car during normal operation, and can more reliably suppress the lateral vibration of the movable connecting body. A control device (11) for an elevator includes a drive control unit (14), a control mode switching unit (12), and a calculation unit (13). When the driving control part (14) changes the rotating speed of the driving pulley (7) in a wave manner, it can limit the change frequency of the rotating speed of the driving pulley (7) in the normal mode within the prescribed low frequency band and can make the driving pulley (7) ) to switch between the vibration suppression mode at a frequency higher than the low frequency band. A control mode switching unit (12) detects lateral vibration of the main rope (8), and switches the control mode of the drive control unit (14) to a vibration suppression mode. A calculation unit (13) calculates a signal for canceling lateral vibration. The drive control unit (14) controls the rotation of the drive pulley (7) based on the information from the calculation unit (13) to suppress lateral vibration in the vibration suppression mode.

The invention discloses a deep sea four-track hydraulic direct-drive self-adaptive all-terrain chassis, which relates to the technical field of mining equipment. The deep sea four-track hydraulic direct-drive self-adaptive all-terrain chassis comprises crawler wheels, a frame, suspension mechanisms and steering mechanisms, wherein the four crawler wheels are respectively connected with four corners of the frame through suspension mechanisms; the steering mechanisms are symmetrically mounted at the front end and the rear end of the frame correspondingly; the steering mechanism is hinged with the crawler wheels, the steering mechanism comprises a steering knuckle assembly, a connecting assembly, a double-rod oil cylinder and a bogie, the double-rod oil cylinder is connected with the bottom of the frame through the bogie, and the two ends of the double-rod oil cylinder are respectively connected with the steering knuckles on the two sides through the connecting assembly. The deep sea four-track hydraulic direct-drive self-adaptive all-terrain chassis can be suitable for underwater 1000-4000 m environment operation, can also be used for non-pavement operation of mines, coastal mines, landform mines and the like, can freely go straight and steer, can freely adjust the posture and the ground clearance, and can actively intervene to achieve leveling of a vehicle body and stable groundgripping.

The invention provides an electric concrete mixer and a control method thereof. The control method comprises the following steps of acquiring the residual electric quantity of a battery pack; judgingwhether the residual electric quantity is smaller than a first threshold value or not; starting a range extender to charge the battery pack or supplying power to a driving motor if the residual electric quantity is smaller than the first threshold value. According to the technical scheme of the control method of the electric concrete mixer, the configuration of the battery pack is effectively reduced, and the structure of the electric concrete mixer is simplified, the cruising ability of the electric concrete mixer is guaranteed, the situation that the concrete mixer is broken down and a mixing drum stops rotating is avoided, emission is reduced, and pollution is reduced.

An embedded cobasis plane two-dimension balance double-drive double-workpiece platform positioning system belongs to the technical field of semiconductor manufacturing equipment; two X-direction single-plate linear motor stators arranged in parallel are embedded between a workpiece platform A and a workpiece platform B on a base station along X direction; the two X-direction single linear motor stators are respectively matched with X-direction single-plate linear motor active cells on the workpiece platform A and the workpiece platform B in sequence; the upper surface of the X-direction single-plate linear motor stators is in parallel with the datum plane of the base station and is embedded in the groove of the base station; connection material is filled all around the X-direction single-plate linear motor stators. The system of the invention avoids the vibration and instability of the workpiece platform caused by center of mass offset generated by single scan and inertia torque change generated by unilateral variable-speed drive, the structure is simplified, the rigidity is enhanced and the reliability is improved.

The invention provides a rigid anti-swing lifting device suitable for a crane. The rigid anti-swing lifting device is composed of a traveling mechanism, a lifting mechanism, a translation mechanism, acontrol module and a grabbing mechanism; the traveling mechanism utilizes the Mecanum wheel for omni-directional movement, and functions of free rotation, translation, in-situ turning and the like are achieved; the lifting mechanism realizes the anti-swing function through a lifting frame and a clamp, and can maximize the stability and accuracy of guaranteeing the lifting and placement of the goods; the translation mechanism is composed of a translation motor, a horizontal synchronous belt and a sliding seat, and the horizontal synchronous belt can achieve precise translation control of the sliding seat; the control module is mainly used for realizing the flexible displacement of the whole vehicle and the angle control of the grabbing mechanism by using the stm32 integrated board, and precise work of the hoisting and translation mechanism is controlled through the external direct-current driver; the grabbing mechanism is composed of a steering engine and a clamp, so that the clamp canrealize 360-degree steering, and the crossing obstacle is more rapid.

The invention discloses an air-conditioning system and an air-conditioning reversing valve. The air-conditioning reversing valve comprises a valve body and a valve spool, the valve spool comprises a piston part, the piston part comprises a piston cup and an elastic plate, the piston cup comprises a base plate and a frustum-shaped cup body, and the elastic plate comprises an elastic base plate and a frustum-shaped ring formed by a plurality of elastic pieces. The ratio of the thickness of each elastic piece to the thickness of the wall of the cup body is not smaller than 0.15 and not larger than 0.30. When in free state, the ratio of the maximum diameter of the frustum-shaped ring to the diameter of the inner cavity of the valve body is not smaller than 0.99 and not larger than 1.07, and the ratio of the maximum diameter of the cup body to the diameter of the inner cavity of the valve body is not smaller than 1.02 and not larger than 1.09. When at low temperature, the piston cup can be kept to contact with the valve body by the air-conditioning reversing valve, and affection on the sealing performance between the valve spool and the valve body from the low temperature can be reduced. When at high temperature, acting force of the piston cup to the valve body can be kept within a proper range by the air-conditioning valve, and pressure difference of reversing of the air-conditioning reversing valve at high temperature can be reduced.

The invention relates to a middle-low speed maglev vehicle running mechanism. The running mechanism comprises levitation frames connected in sequence. A linear induction motor stator is respectively hung on two sides of each levitation frame. The number of the levitation frames is six. The number of the linear induction motor stators is twelve, and the linear induction motor stators are symmetrically distributed on two sides of the running mechanism. The linear induction motor stators on each side of the running mechanism are divided into at least two groups. The linear induction motor statorsin each group are connected in series and are connected with a vehicle-mounted traction invertor. Compared with the prior art, the running mechanism increases terminal voltage of a single linear induction motor stator, and can improve maximum operation speed of a maglev train, and meanwhile system availability and reliability are improved, so as to ensure safe and stable operation of a train.

The invention relates to a self-propelled aerial working platform vehicle chassis, which belongs to the field of engineering machinery. The chassis is provided with a frame, the frame is respectively articulated with a front axle and a rear axle through main chassis shafts, the body of a four-sided slide valve is fixed on one side of the frame, a four-sided slide valve core pull rod is articulated with the rear axle, the body of a left servo hydraulic cylinder is articulated with the frame, the piston rod of the left servo hydraulic cylinder is articulated with the front axle, the body of a right servo hydraulic cylinder is articulated with the frame, the piston rod of the right servo hydraulic cylinder is articulated with the front axle, a hydraulic power source supplies oil to the four-sided slide valve under constant pressure, one oil outlet of the four-sided slide valve is connected with the piston cavity of the right servo hydraulic cylinder and the rod cavity of the left servo hydraulic cylinder via a balance valve, and the other oil outlet of the four-sided slide valve is connected with the rod cavity of the right servo hydraulic cylinder and the piston cavity of the left servo hydraulic cylinder. The invention adopts the mechano-hydraulic servo control mechanism to ensure that tyres can follow the ground to ensure driving force, and the tread can be automatically increased and decreased in the process of running.

The invention relates to a universal base plate for a heavy-load two-wheel differential robot. The universal base plate comprises a bottom plate. A suspension driving device is mounted in the middle of the bottom plate. Multiple support wheel devices are arranged on the portion, on the periphery of the suspension driving device, of the bottom plate. The suspension driving device comprises a middle shell and two driving wheel frames correspondingly located on the two sides of the middle shell. A connecting rod is arranged between each of the two sides of each driving wheel frame and the middle shell, and a four-connecting-rod mechanism is formed. Connecting end heads are correspondingly mounted on the tops of the two driving wheel frames. An adjustable spring is arranged between each connecting end head and the middle shell. The upper end of each adjustable spring is hinged to the top of the middle shell, and the lower end of each adjustable spring is hinged to the corresponding connecting end head. Driving wheel shafts with driving wheels at the outer ends are correspondingly mounted at the bottoms of the two driving wheel frames, and motors are correspondingly mounted on the inner sides of the two driving wheel frames. The outer end of a motor shaft of each motor is in butt joint with the inner end of the corresponding driving wheel shaft. Each support wheel device comprises a support wheel frame fixedly connected with the bottom plate. Universal wheels are mounted at the bottom of each support wheel frame.

The invention relates to a control device for a hybrid vehicle, the hybrid vehicle comprise an internal-combustion engine, a generation motor, a current condenser and a driving force auxiliary unit. Further, the control device includes a switching unit that selects an appropriate traveling range from a plurality of traveling ranges including at least a normal traveling range and a charging priority range for preferentially charging the capacitor and switches the range, and a threshold value increasing unit that increases, when the charging priority range is selected by the switching unit, the predetermined determination threshold value as compared to when the normal traveling range is selected by the switching unit.

The invention relates to a composite electric spindle. The composite electric spindle comprises a spindle box, a motor and a rotating shaft, wherein the rotating shaft is fixedly assembled with a motor rotor; the front end of the rotating shaft is used for installing a machining cutter; the rotating shaft is rotatably supported by a front bearing supporting structure and a rear bearing supportingstructure; a three-toothed-disc mechanism is arranged on the rear side of the motor rotor and comprises a floating toothed disc, a movable toothed disc and a fixed toothed disc; the fixed toothed discis relatively and fixedly assembled on the spindle box; the movable toothed disc is relatively and fixedly assembled on the rotating shaft; the floating toothed disc is movably assembled on the spindle box in the front-rear direction; and the floating toothed disc is provided with a combination position in the moving stroke, and the floating toothed disc meshes with the movable toothed disc and the fixed toothed disc at the same time when the floating toothed disc is in the combination position. According to the composite electric spindle, the three-toothed-disc mechanism is positioned on therear side of the motor rotor, so that compared with the prior art that a three-toothed-disc mechanism is arranged on the front side of a motor rotor, the radial size of the front end of the compositeelectric spindle is effectively reduced, and then the application fields of the composite electric spindle are effectively expanded.

The invention provides an energy-saving anti-falling vertical elevator. A sensor detects the weight of a borne object in an elevator car and transmits a weight sensor to a controller, the controller controls a sliding power device to drive a first adjusting driving single body and a second adjusting driving single body, so that the first adjusting driving single body and the second adjusting driving single body drive a first balance adjusting executing single body and a second balance adjusting executing single body respectively to perform balance adjustment, a balance weight device and the elevator car achieve balance, an elevator car lifting driving motor can lift the elevator car by only providing a small traction force, a traction rope winding twisting force of the elevator car liftingdriving motor can further be greatly alleviated while the energy consumption of the elevator car lifting driving motor is reduced, a traction rope is not subjected to stress concentration and thus does not undergo damage such as breakage, the service life of the traction rope is greatly prolonged, and the elevator car does not drop easily.

The invention relates to a petroleum production wastewater recycling method, and concretely relates to a combined membrane technology-based high temperature high-salt petroleum production wastewater recycling method. The method is used for solving the technical problems of wide pollution range, large harms and difficult degradation of petroleum production wastewater. The method comprises the following steps: 1, an ultrafiltration system runs; 2, a forward osmosis and membrane distillation system starts to run; 3, water discharged from a raw material liquid side enters the liquid drawing side of a forward osmosis assembly, and a hypoosmotic solution to be concentrated in a forward osmosis raw material liquid tank enters the raw material liquid side of the forward osmosis assembly through a third water pump and undergoes concentration circulation; 4, when the temperature of filtered water is 30-35 DEG C, the forward osmosis and membrane distillation system stops running, a water collecting tank, a membrane distillation assembly and the forward osmosis assembly are emptied, and petroleum undergoes groundwater recharge; and 5, after the water collecting tank is emptied, the membrane distillation assembly and the forward osmosis assembly are cleaned, step 1 is repeated, and step 2 to step 4 are simultaneously repeated to complete the system. Petroleum, high heat and high salt in the petroleum production wastewater are respectively used in the invention.

The invention provides an anti-falling vertical elevator. A sensor detects the weight of a borne object in a car, and a weight signal is transmitted to a controller; the controller controls a sliding power device to drive a first adjusting drive monomer and a second adjusting drive monomer, so that the first adjusting drive monomer and the second adjusting drive monomer drive a first balance adjusting execution monomer and a second balance adjusting execution monomer correspondingly to carry out balance adjusting, and a balance weight device and the car are balanced; a car lifting drive motor enables the car to ascend and descend simply by providing small traction force, energy consumption of the car lifting drive motor is reduced, and meanwhile the twisting force of the car lifting drive motor on traction rope winding can be greatly relieved; and a traction rope cannot suffer from stress concentration and is not prone to suffering from damage of breaking and the like, the service life of the traction rope is greatly prolonged, and falling and other situations are not prone to happening to the car.

The invention relates to a mechanical press mounting structure of a group large-power flat-plate power electronic device, which is technically characterized in that firstly, a left ejector pin is coaxially installed in a spring mandrel in a sliding mode, the spring mandrel is installed on a left support plate through a key pin which is mounted along the radial direction of the spring mandrel, a set of disk springs is mounted on the spring mandrel at the right end of the support plate, an annular groove is radially manufactured on the spring mandrel at the right end of the support plate, and a limiting chuck is mounted in the annular groove; secondly, a press mounting screw is coaxially engaged in the spring mandrel at the left side of the left ejector pin; and thirdly, the right end of the left ejector pin and a left pressure plate are in spherical pair installation, and the left end of the a right ejector pin and a right pressure plate are in spherical pair installation. In the mechanical press mounting structure, the disk springs are adopted as driving elements, the compression stroke of the disk springs are accurately controlled through machining parts and has nothing to do with the assembly precision; the mechanical pressing force is accurately controlled with constant pressure; and the structure has large latitude for the assembly length of power device series, eliminates the assembling clearance, has self-adaption for the length of the power device series in a certain range, and has high press mounting precision.

The invention discloses a sand blasting derusting device for a reinforcing steel bar. The sand blasting derusting device comprises a rack, a conveying device, sand blasting devices and a sand suction device. The conveying device comprises a servo motor, a speed reducer, a chain wheel mechanism, a transmission chain, a conveying carrier roller and a reinforcing steel bar conveying groove. Each sand blasting device comprises a sand blasting compartment, a sand blasting gun frame, a gas spray gun frame, a dust collecting compartment and a steel sand recovery compartment. The sand suction device comprises a sand cylinder, a sand shot conveying-out pipe, an air compressor and a spray gun adjusting linkage device. In addition, the two sand blasting devices are sequentially installed on the rack. The sand blasting derusting device has the beneficial effects that sand blasting derusting can be conducted on the reinforcing steel bar in all directions, meanwhile, an internal environment and an external environment can be cleaned, the rack passes through the outer sides of the sand blasting compartments, the conveying carrier roller does not enter the sand blasting compartments either, and the rack and the carrier roller can be prevented from being damaged; and the sand blasting devices are increased, after sand blasting is conducted in a hierarchical manner, rough steel sand is recycled and then cleaned to be reused, and fine steel sand can be directly recycled; and with the comprehensive effect, the production efficiency can be improved, cost is reduced, and the labor protection measure is enhanced.

The invention discloses a method for controlling a chassis of a full-hydraulic drive high-speed rice transplanter; when actual traveling speed is less than A, a traveling variable motor is controlledto reach maximum displacement; when the actual traveling speed is greater than or equal to A, a plunger pump is controlled to reach maximum displacement; when overspeed is detected, the traveling variable motor that is under overspeed is controlled to reach zero displacement; when a seedling box is inclined, the seedling box reaches a horizontal state by controlling a profiling balance control valve; when grounding pressure of a seedling box floating plate is too high or too low, the grounding pressure of the seedling box floating plate is controlled to reach a set value through a seedling boxlifting control valve; when a steering wheel exceeds a set angle, the seedling box rises to the highest position; when in-situ debugging is carried out, a left reversing valve is controlled to be electrified; during non-operation transition, a right reversing valve is electrified; when normal traveling transplanting operation is carried out, the left reversing valve and the right reversing valveare not electrified; during idling, both the left reversing valve and the right reversing valve are electrified; and when plant spacing is adjusted to be smaller or larger, a rice transplanting motoris controlled to reach a larger or smaller displacement. The method can effectively improve the operation flexibility and reliability of the transplanter.