132results about How to "Won't rotate" patented technology

The invention discloses a circumcision stitching instrument. The circumcision stitching instrument is characterized in that a pull rod and an erecting body of a glans penis seat are coaxially connected by adopting concave-convex matching, and thus the glans penis seat cannot rotate; the circumcision can be more smooth and quicker due to the matching of a knife anvil ring and a blade; when the circumcision stitching instrument is not used, a nail cabin ring is externally provided with a nail cabin cover in a covering way for protecting a stitching nail from being separated, and an erecting body cap moving groove on a shell tail is provided with a safety buckle in a buckling way for enabling each component not to move when each component is not used, and particularly for protecting the blade and the stitching nail.

The invention relates to the field of assembly of brake discs, in particular to automatic assembling equipment for a brake disc. The automatic assembling equipment comprises a base, a feeding assembly, a material moving assembly, a fixing assembly, a screw locking assembly and a discharge assembly. The feeding assembly, the material moving assembly, the fixing assembly, the screw locking assemblyand the discharge assembly are installed at the top of the base. The material moving assembly comprises a clamping jaw capable of horizontally moving above the fixing assembly. The fixing assembly comprises a machine table, a first sliding board, a first pushing device, a workpiece positioning tool and a workpiece pressing device. The top of the workpiece pressing device is equipped with multiplepositioning columns used for positioning the brake disc. The workpiece pressing device comprises multiple hydraulic rods which are arranged in a tilting manner. The top of the machine table is equipped with a strip-shaped accommodation groove same as the machine table in terms of length. The screw locking assembly comprises an electric screwdriver which can vertically elevate. The discharge assembly comprises a conveyor belt and a material receiving box. Additionally, the feeding assembly is located on one side, departing from the strip-shaped accommodation groove, of the conveyor belt. Production efficiency is increased while production quality is enhanced.

The rice cooker has a body, the top of which is opened, a pot removably stored in the storage section of the body, a lid openably covering the storage section, an induction heating means for induction heating the pot, a weight sensing element directly or indirectly mounted to the storage portion and a sensor directly or indirectly mounted to the weight sensing element and abutting against the near center of the outside bottom of the pot. The rice cooker also has a weight sensing means for sensing the total weight of the pan and the object of cooking put in the pot by the weight sensing element through the sensor and a control section computing the weight of the object of cooking on the basis of an output signal of the weight sensing means and controlling the percentage of current carried and / or the amount of current carried by the induction heating means in accordance with the weight of the object of cooking.

The invention discloses a pipe welding jig which is used for welding of a pipe and sheet metal. The welding jig comprises a jig bottom plate and further comprises at least one set of pipe welding unit connected with the jig bottom plate. Each pipe welding unit comprises a pipe positioning mechanism which is used for positioning the pipe, a pipe rotation preventing mechanism which is used for preventing rotation during pipe welding, a sheet metal positioning mechanism which is used for positioning the sheet metal, and a sheet metal pressing mechanism which is used for tightly pressing the sheet metal. The pipe welding jig has the beneficial effects that the pipe positioning mechanism is arranged and used for positioning the pipe; the pipe rotation preventing mechanism is used for preventing rotation during pipe welding; the sheet metal positioning mechanism is used for positioning the sheet metal; the sheet metal pressing mechanism is used for tightly pressing the sheet metal; in the welding process, the pipe and the sheet metal can be positioned simultaneously, relative displacement between the pipe and the sheet metal is avoided, and the welding precision is high; and meanwhile, rotation is avoided during welding, and the welding efficiency is greatly improved.

The invention relates to a thermally insulated container used for thermal insulation when storing food and the like. The thermally insulated container manufactured according to the technology of the invention is composed of the following structures: a thermally insulated outer cylinder; an inner cylinder disposed inside the thermally insulated outer cylinder; an inner cylinder cover used for covering the inner cylinder; and an outer cylinder cover used for covering the thermally insulated outer cylinder. In addition, the outer cylinder cover is provided with a locking ring and the thermally insulated outer cylinder is also provided with a hook used for hooking the locking ring so that in the state that the inner cylinder is disposed on the thermally insulated outer cylinder, the locking ring is hooked on the hook, thereby realizing the effect of locking the thermally insulated container. Since the thermally insulated container according to the technology of the invention is provided with the locking ring, the sealing state of the thermally insulated container can be easily maintained. Moreover, the thermally insulated outer cylinder is composed of an outer side cylinder, an inner side cylinder, and thermal insulation materials clamped between the outer side cylinder and the inner side cylinder, so that the thermal insulation performance of the thermally insulated container can be easily improved.

The invention provides an outer peripheral face polishing machine for a bearing outer ring and belongs to the technical field of machinery. The problem in the prior art that a special device for polishing the outer peripheral face of the bearing outer ring is unavailable is solved. The machine comprises a machine frame, a work table board is fixed on the machine frame, a first bearing seat and a second bearing seat which correspond to each other are fixed on the work table board, a grinding wheel is arranged between the first bearing seat and the second bearing seat through a first rotary shaft, and the first rotary shaft is connected with a power mechanism. A third bearing seat and a fourth bearing seat are arranged on the work table board, and a locating wheel is arranged between the third bearing seat and the fourth bearing seat through a second rotary shaft. A first guide track and a second guide track are fixed on the work table board, the third bearing seat and the fourth bearing seat are arranged on the first guide track and the second guide track in a sliding mode respectively, and the third bearing seat and the fourth bearing seat are connected with an adjusting mechanism. The machine can polish the outer peripheral face of the bearing outer ring and is high in efficiency.

The invention provides a device for long distance slide without wear for a super-lubricity slide block. The device comprises a super-lubricity slide block and a super-lubricity bottom plate. The super-lubricity slide block is placed on the super-lubricity bottom plate. The super-lubricity slide block is rectangular, and the lower surface is a super-lubricity surface. The super-lubricity bottom plate is strip-type and the upper surface is a super-lubricity surface. The super-lubricity slide block and the super-lubricity bottom plate are equal in width. The edge of the slide block and the edge of the bottom plate are overlaid with the maximum area. The super-lubricity state is kept for a long time, and the slide block can slide for a long distance. The super-lubricity slide block and the super-lubricity bottom plate designed in geometrical shape only to achieve a function of constraining rotation without increasing the process difficulty.

The invention relates to the technical field of drilling machines, in particular to a quick drill bit replacing mechanism for a drilling machine. The quick drill bit replacing mechanism comprises a processing table and also comprises a supporting rack located on one side of the processing table. The supporting rack is arranged vertically, a vertically arranged rotating rod is arranged in the supporting rack, a rotating plate is arranged on the rotating rod, drilling machines uniformly distributed around the circumferential direction of the rotating rod are arranged on the rotating plate, the working ends of the drilling machines are provided with drill bits of different diameters, separately, the drilling machines are vertically arranged, the drilling machines are separately arranged on the rotating plate in a lifting manner, the drilling machines are arranged above the processing table, a gap rotating driving assembly is arranged on the top of the supporting rack, the top of the rotating rod can penetrate the two sides of the top of the supporting rack rotatably to stretch upward, and the stretching end of the rotating rod is fixedly connected to the gap rotating driving assembly.The equipment is provided with the drilling machine with drill bits of different diameters and can use the needed drilling machines during process, so that the processing efficiency is improved.

The invention discloses a pole climbing device for electric power system maintenance. The device comprises an electric pole, a mounting plate is arranged on the electric pole, a rack is arranged on the mounting plate, the device further comprises an operation platform, a driving mechanism, a locking mechanism and a guide mechanism, the driving mechanism, the locking mechanism and the guide mechanism are installed on the operation platform, and the guide mechanism comprises a horizontal guide mechanism and a vertical guide mechanism. According to the device, through the driving mechanism, the operation platform is enabled to ascend and descend to reach the designated position for the maintenance work, the operation is simple and convenient, in the ascending and descending process, the vertical guide mechanism ensures that the operation platform does not rotate, and the adjustment is not needed in the pole climbing process.

The invention discloses a leg buffer structure of a walker, which comprises a toe, a spring, two sets of torque spring pieces, a guide rod, a central leg connecting shaft, a guide rod sleeve, a toe connecting shaft, a first leg connecting shaft, a plurality of leg members and a second leg connecting shaft, wherein the a guide hole is formed in the middle of the toe connecting shaft, one end of the guide rod penetrates through the guide hole and is fixedly connected with the toe, a spring is arranged between the toe and the toe connecting shaft and is sleeved and connected with the guide rod, the other end of the guide rod is partially sleeved to the guide rod sleeve, the guide rod sleeve is connected to the middle of the central leg connecting shaft, the two sets of torque spring pieces are arranged on two sides of the guide hole and are respectively connected with the toe connecting shaft and the first leg connecting shaft, and the leg members are arranged on two sides of the guide rod in a paired crossing manner and are respectively connected with the first leg connecting shaft, the central leg connecting shaft and the second leg connecting shaft. The leg buffer structure has the advantages of realization of multi-directional buffer, simple structure, convenience in operation, wide application range, little abrasion, high flexibility and high stability.

The invention discloses an outdoor power distribution cabinet capable of automatically cleaning dust. The outdoor power distribution cabinet comprises a bottom plate. The upper surface of the bottom plate is fixedly connected with a power distribution cabinet body. The upper surface of the power distribution cabinet body is fixedly connected with two fixing plates. The opposite sides of two fixingplates are fixedly connected with the outer surface of a first driving device respectively. According to the outdoor power distribution cabinet capable of automatically cleaning dust, a first motor,a second motor, a telescopic device, a rope, a rope plate, a first slider, a first sliding slot and a through hole are arranged; a third motor is controlled to work, and a brush rotates to sweep duston the outer surface of the power distribution cabinet body; a second motor is controlled to work, and the rope plate rotates, and the brush can move up and down to clean dust on the outer surface ofthe power distribution cabinet body; a worker does not need to manually use a tool to clean dust on the outer surface of the power distribution cabinet body, which saves the time and physical strengthof the worker; and the worker can overhaul electronic components inside the power distribution cabinet body without delay .

The invention discloses a video satellite moving target tracking imaging method based on image guidance. The method comprises the following steps of S100, obtaining coordinate information of a targetin a satellite view angle image; S200, calculating an error quaternion and an error angular velocity from an actual attitude of a satellite to an expected attitude under a satellite body coordinate system according to the coordinate information at the satellite view angle sampling moment, and controlling the satellite to adjust the attitude by adopting a proportional differential controller by taking the error quaternion and the error angular velocity as feedback quantities; and S300, judging whether the target is in the center of the satellite view angle image or not, if not, repeating the steps S100 to S200, and if so, stopping. According to the method, staring tracking imaging can be carried out on the non-cooperative moving target through the video satellite. The invention further provides a device adopting the method.

The invention discloses an easy-to-disassemble artificial intelligent surveillance camera. The easy-to-disassemble artificial intelligent surveillance camera comprises an installation plate, the lowersurface of the installation plate is fixedly connected with a connecting plate, the left side and the right side of the connecting plate are fixedly connected with movable devices respectively, the right side faces of the movable devices are fixedly connected with third connecting blocks, the right side faces of the third connecting blocks are fixedly connected with elastic devices, and the rightends of the elastic devices are fixedly connected with clamping blocks. According to the easy-to-disassemble artificial intelligent surveillance camera, by arranging baffles, the baffles move rightwards to drive sliding rods to move rightwards, when the sliding rods move rightwards and are separated from second clamping grooves, and the left ends of the sliding rods penetrate through third through holes, clamping blocks are rotated upwards, when the clamping blocks are rotated and separated from first clamping grooves, the connecting plate can be disassembled, and then a camera body is disassembled. Great convenience is brought to disassembly, a screw driver or other tools do not need to be used, and convenience is brought to disassembly of the camera body.

The invention provides a coal gas pressurizing machine which comprises an air inlet, a case, an impeller, a spindle sealing device, a spindle and a bearing box. A connecting flange face is arranged on the front side of the case, the air inlet is fixedly formed in the connecting flange face through a bolt, the spindle penetrates into the rear side of the case, and the spindle and the case are sealed through the spindle sealing device. The rear end of the spindle is fixed to the bearing box through a bearing. The spindle sealing device comprises a sealing body, a nitrogen sealing cavity, a plurality of carbon rings and a packing. The carbon rings are evenly arranged on the bottom side of the sealing body at intervals in a sleeving mode. The nitrogen sealing cavity is in a sealed cavity type, and is formed in the middle of the sealing body and located between the carbon rings. The packing is arranged on the outermost side of the spindle sealing device and connected with the sealing body. The coal gas pressurizing machine is reasonable in structure and excellent in whole machine sealing performance, meanwhile, large-flow flammable and combustible gas can be safely conveyed, it is effectively guaranteed that no coal gas is leaked, outside air is prevented from entering a fan, and the aims of poison prevention, explosion prevention and safe running are really achieved.

The invention discloses a household convenient-to-adjust solar cell panel storage device, which comprises a box body, a support plate and a cover plate, wherein a groove is formed in the left side surface of an inner wall of the box body; a slide bar is arranged in the groove; the top end of the slide bar is fixedly connected to the upper surface of the inner wall of the groove; and the bottom endof the slide bar is fixedly connected to the lower surface of the inner wall of the groove. According to the household convenient-to-adjust solar cell panel storage device, through the arrangement ofa motor, a driving gear, a driven gear, a thread cap, a threaded rod, a first fixing plate, the slide bar, a sliding sleeve, an electric push rod, an idler wheel and a triangular plate, the electricpush rod extends to drive the idler wheel to move left, and the idler wheel directly drives the support plate to rotate around a movable device through the triangular plate when moving left to be overlapped with a first sliding chute, so that the angle of a solar cell panel body can be directly adjusted and manual operation of people is not needed, thereby saving time and physical strength of people and bringing convenience to people when the solar cell panel body is used.

The invention relates the field of brake disk assembly, in particular to automatic brake disk assembly equipment. The automatic brake disk assembly equipment comprises a base and further comprises a feeding assembly, a material shifting assembly, a fixing assembly, a screw driving assembly and a discharging assembly which are installed on the top of the base; the material shifting assembly comprises a gripping jaw moving horizontally on the fixing assembly; the fixing assembly comprises a machine table, a first slide board, a first pushing device, a workpiece positioning jig and a workpiece compressing device; a plurality of positioning columns used for positioning a brake ring are vertically arranged on the top of the workpiece positioning jig; the workpiece compressing device comprises aplurality of oblique hydraulic rods; a strip-type containing tank of which length is the same as that of the machine table is arranged on the top of the machine table; the screw driving assembly comprises an electric screw driver ascending and descending vertically; the discharging assembly comprises a conveying belt and a receiving box; and the feeding assembly is located on the side, away fromthe strip-type containing tank, of the conveying belt. The automatic brake disk assembly equipment not only improves the production efficiency, but also improves the production quality.

The rice cooker of the invention includes a body with an open on the top surface, a pot in the body, a lid covering the body open section, a heating means for heating the pot, a weight detecting element mounted on the body for detecting the total weight of the pot and the cooked food, a rewritable non-volatile memory and a control unit for updating a weight computing parameter stored in a storage unit on the basis of an output signal of the weight detecting means at a first time, computing the weight of the cooked food on the basis of the output signal of the weight detecting means and the weight computing parameter at a second time and controlling the percentage of current carried and / or the amount of current carried by the heating means in accordance with the weight of the cooked food. The non-volatile memory has a storage unit for storing at least a first output signal of the weight detecting means when the pot is not in the body and a second output signal of the weight detecting means when the pot is in the body.

The invention discloses a metering detection device for liquid taking metering and belongs to the technical field of liquid metering devices. The metering detection device for liquid taking metering comprises a measuring cylinder, wherein a piston plate is slidably connected in the measuring cylinder, the top of the piston plate is fixedly connected with a first connecting rod, a rack is fixedly connected with the support, the measuring cylinder is fixedly connected with a fixing frame, a worm is rotationally connected into a fixed frame, a worm wheel is rotationally connected with the fixed frame, a supporting rod is rotationally connected into the piston plate, stirring blades are fixedly connected with one end of the support rod at the bottom of the piston plate, a hollow column is rotationally connected with the support, a limiting strip is fixedly connected with the supporting rod, a rotating shaft is rotationally connected into the piston plate, an exhaust plate is fixedly connected with the bottom of the rotating shaft, a first exhaust hole is formed in the exhaust plate, a second exhaust hole is formed in the piston plate, and the first exhaust hole communicates with the second exhaust hole. The metering detection device is advantaged in that a large amount of liquid can be measured conveniently, and the stirring blades rotate to stir the solution in the extraction andrelease process, so precipitation is avoided.

The invention discloses a new energy automobile battery tank convenient to assemble and disassemble. The new energy automobile battery tank comprises a shell, wherein a lead hole is formed in the leftside surface of the shell; a first rotating device is clamped on the lower surface of the inner wall of the shell; the first rotating device comprises a first bearing; a first rotating shaft is arranged inside the first bearing in a sleeving manner; the top end of the first rotating shaft is fixedly connected with the bottom end of a first threaded column; and a second screwing ring is fixedly connected with the top end of the first threaded column. Due to adoption of the first threaded column, a second threaded column, a carrying plate, a first bearing, a first sliding rod, a second slidingrod and a triangular block of the new energy automobile battery tank convenient to assemble and disassemble, when a battery component is damaged and needs to be replaced, the second screwing ring is screwed by an operator to rotate reversely, then the first threaded column is driven by the second screwing ring to rotate reversely, and the battery component can be disassembled and taken out by theoperator without a tool when being damaged and needing to be replaced, so that not only is the time of the operator shortened, but also convenience can be brought to the operator to replace a battery.

The invention discloses a mixing device for preparing a consumable of a 3D (Three-Dimensional) printer. The mixing device for preparing the consumable of the 3D printer comprises a bottom plate; the upper surface of the bottom is fixedly connected with the lower surface of a first box body through two fixed rods; and a stirring device is arranged in the first box body. According to the mixing device for preparing the consumable of the 3D printer, through the cooperation among a second box body, a material outlet, a baffle plate, a sliding block, a sliding groove, a threaded cap, a threaded rod, a second rotating shaft, a driven gear, a driving gear and a second motor, an output shaft of the second motor rotates forwards to drive the baffle plate to move away from the position below the material outlet, and the output shaft of the second motor rotates reversely to drive the baffle plate to return to cover the material outlet, so that the amount of the consumable which is poured into thefirst box body can be regulated automatically; a material barrel is not required to be held by people all the time when the consumable is poured into the first box body; the labour intensity of the people is lightened; the time and physical power of the people are reduced; and therefore, convenience is brought to the people when the consumable of the 3D printer is mixed.

The invention relates to the abutting joint field of building materials, in particular to a building load bearing steel bar abutting joint device. The building load bearing steel bar abutting joint device includes steel bars and an abutting joint device bodies, wherein the abutting joint device bodies are fixedly connected to the steel bars, mobile rings sleeve outside the abutting joint device bodies, and downward pressure blocks are movably installed inside the abutting joint device bodies. The top ends of the downward pressure blocks are arranged as arcs, and the horizontal part is formed above the arcs, so that when the mobile rings move upwards, through upward inclined arcs arranged outside the mobile rings, anti-skid raised blocks uniformly distributed on the arcs and outward inclined arcs arranged at the upper ends of the interior of the mobile rings, the mobile rings are enabled to enable the downward pressure blocks to move downwards to fix the steel bars in a more labor-saving mode, and meanwhile, through the horizontal part, the contact area between the downward pressure blocks and the mobile rings is increased after the downward pressure blocks are subjected to downwardpressure, so that the mobile rings cannot slide downwards. Then, the mobile rings can be further enabled to be labor-saving by the embedded combination of rotating wheels movably installed at the topends of the downward pressure blocks and fixed grooves formed in the mobile rings, wherein the rotating wheels are provided with an outer convex parts and inner concave part which are arranged in a staggered mode, and the fixed grooves are formed in a concave interval mode.

The invention provides a hand-operated mechanism of a tapeline and comprises a hand-operated cover. The edge of the hand-operated cover is arranged in a shell in a rotating way through the fixed ring of the hand-operated cover; at least a jack socket is molded on the external surface of the hand-operated cover; a positioning column for the hand-operated handle of the hand-operated cover is connected with the hand-operated handle in a rotating way; one end of the hand-operated handle is provided with a hand-operated sleeve which can be inserted into the jack socket; in addition, the internal side of the handle-operated cover is connected with an on-off claw through the positioning column for the on-off claw in a rotating way and the on-off claw is close to the position of the jack socket; the positioning column for the on-off claw is sleeved with a torsion spring and one end of the torsion spring abuts with the wall surface of the hand-operated cover; the claw end of the on-off claw conducts on-off coordination with an on-off disk tooth or a raised line molded on a ruler core disk, meanwhile, the side edge of the on-off claw abuts with and matches with the hand-operated sleeve inserted into the jack socket so that the invention has more convenient use and the hand-operated device cannot rotate when a ruler belt is pulled out, and therefore, the invention can avoid wounding accident; the invention has compact and reasonable structure, safe and reliable work as well as easy use, moreover, the invention is portable and practical and can avoid mis-collision or mis-touch.

The objective of the present invention to provide a filter structure capable of removing dust, comprising: a circular rim part; a frame, extending from the rim part, for installing a motor; a dust collection net attached to the frame; a brush which is in close contact with the dust collection net and is rotated by means of the motor; an opening, formed at a lower end of the rim part, for discharging dust; an open part formed at one side of the dust collection net; and a concave groove part having an outside coupled to the open part and in one-side communication with the opening at the rim part. The present invention has the effect that a dust removing means of the brush can be continuously shaken off by the concave groove part formed on one side of the dust collection net, such that the dust can be efficiently removed without the brush dragging around and rotating the dust. Particularly, the dust introduced into an air conditioner is blocked from an outdoor air inlet in advance to prevent the dust from entering an air conditioner case, thereby preventing dust collecting efficiency from being deteriorated.

The invention discloses a projection screen bracket with a stable use state and a using method of the projection screen bracket with the stable use state. A screen accommodating barrel (5) is mounted on a supporting rod (1) through a first adjustment mechanism, and a first locking bolt (8) is unscrewed, so that a sliding block (7) can slide up and down on the supporting rod (1) to adjust the position; a straight rod part (3.2) is mounted at the top end of the supporting rod (1) through a second adjusting mechanism, and a second locking bolt (10) is unscrewed, so that the height of a screen hook (3) can be adjusted; the middle section of a rigid hanging line (11) is set to be a protruding section (15). According to the invention, the accommodating barrel is fixed on the supporting rod through a rotating shaft, and rotates and is vertically placed to accommodate a screen, the accommodating barrel is rotated and placed horizontally and then the screen is pulled out to be put into use, and the screen and the bracket can be overall transported and stored. The middle section of the rigid hanging line is set to be a protruding section, and the screen hook is stably clamped in the protruding section rightly when the screen is hung, so that the screen can be effectively prevented from swinging left and right in the using process.

The invention discloses a motor which comprises a base, a stator, a bearing, a rotor and a retaining ring; the base is provided to combine the stator and the bearing; the stator is provided with a core shaft on which a retaining groove and a clamping part are arranged; the retaining groove and the clamping part are respectively provided with a first external diameter and a second external diameter; the second external diameter is larger than the first external diameter; the retaining ring is held by the retaining groove and is provided with a combining part and a holding part; the combining part can be used for positioning the retaining ring and the holding part surrounds to form an inner hole; the diameter of the inner hole is larger than the first external diameter and smaller than the second external diameter so that a gap exists between the inner hole and the clamping groove, thereby preventing noise generated by the friction between the retaining ring and the core shaft, ensuring that the stator never falls off the base arbitrarily and avoiding excessive restriction in assembly.

The invention discloses a spring compressing machine facilitating compression quantity detection and used for a spring. The spring compressing machine comprises a base plate, vertical plates are fixedly connected to the left and right sides of the upper surface of the base plate, the upper surfaces of the two vertical plates are fixedly connected to the lower surface of a transverse plate, a threaded cap is clamped to the upper surface of the transverse plate, a threaded column is in threaded connection to the interior of the threaded cap, and the top end of the threaded column is fixedly connected to an output shaft of a motor. According to the spring compressing machine facilitating compression quantity detection and used for the spring, the motor is arranged, the output shaft of the motor rotates to drive the threaded column to rotate, under the effect of the threaded cap, the threaded column downwards moves to drive a rotating shaft, a bearing and a movable plate to move downwards,the movable plate downwards moves to extrude the spring, at the time, the displacement of compression of the spring is measured through a displacement sensor and is processed through a processor to be transmitted to a display screen, a person can accurately know the compression quantity of the spring, and convenience is brought for the person to measure the compression quantity of the spring.

The invention discloses a pivot steering device for a bio-robot. The pivot steering device for the bio-robot comprises a first fixing plate, wherein two clamping grooves are formed in the upper surface of the first fixing plate; the lower surface of the inner wall of each clamping groove is in lap joint with the upper surface of each clamping block; the outer surface of each clamping block is fixedly connected with the inner surface of a first anti-sliding cushion; the upper surface of each clamping block is fixedly connected with the bottom end of a first rotating shaft; the outer surface ofeach first rotating shaft is in sleeving connection with a first bearing; each first bearing is in clamped connection to the lower surface of a fixing plate; and the upper surface of each fixing plateis in clamped connection with a second bearing. A roller is fixedly mounted at the bottom end of a fixing seat, thus, the device can move back and forth in a direction, by the acting force of a cylinder, a second sliding rod can slide in a limiting sleeve, thus, wheels can be in contact with the bottom surface, the pivot steering device for the bio-robot can move back and forth in another direction, and rapid steering operation of the device is realized.

The invention relates to the field of electric vehicles, and discloses a control method and control system for heating a battery of an electric vehicle and the electric vehicle. The control method comprises the steps of calculating a pulse width modulation signal according to the current position of a rotor of a motor of the electric vehicle; controlling on-off of a switching element of an inverter of the electric vehicle according to the pulse width modulation signal so as to output a control voltage; and loading the control voltage to a stator coil of the motor to generate a current that forms a magnetic field only in a rotor magnetic field direction of the motor, thereby heating the battery by heat loss of the stator coil. According to the control method, a heater does not need to be additionally arranged, and by controlling a permanent magnet synchronous motor arranged on the electric vehicle, the circulating liquid introduced into the battery can be heated on the basis of ensuringthat the motor does not rotate.