90results about How to "Guaranteed rotation effect" patented technology

The invention provides a rotatable anvil block structure and solves the problem that the existing fixed type free anvil block cannot rotate a large-sized work piece. The rotatable anvil block structure comprises a bottom plate; and the bottom plate is mounted on an equipment moving platform. The rotatable anvil block structure is characterized by further comprising a rotatable platform; the bottom plate is fixedly provided with a supporting base; an annular groove is arranged on the upper plane of the supporting base; the annular groove is internally provided with an annular slide way; a V-shaped groove is correspondingly arranged on each of the upper plane of the annular slide way and the lower plane of the rotatable platform; the V-shaped groove of the annular slide way is internally and tightly filled with a ring of steel beads; the rotatable platform is supported by the steel beads in the V-shaped groove of the annular slide way and the V-shaped groove of the lower plane of the rotatable platform is buckled on the steel beads; and horizontal bind holes are formed in the outer circumference of the rotatable platform.

The invention relates to a bearing comprising an outer bearing ring (1), a rolling body (3) and an inner bearing ring (4). The bearing is structurally characterized in that the inner rackway surface of the outer bearing ring (1) comprises a plurality of bulges (11) protruding towards the inner side of the outer bearing ring (1), the bulges (11) are connected in sequence, and a concave part (12) is formed at a connecting part of every two adjacent bulges (11). The bearing is used for ensuring that the matching surface between the outer bearing ring and a bearing saddle bore is not easy to slip under the working condition of high-speed light load, and the rotation performance of the bearing is ensured, thus, the service life of the bearing is prolonged.

The invention relates to a turnable spherical support belonging to the bridge facility technology field, which comprises an upper support plate, a lower support plate, a first wear-resisting plate, a buffer plate, a second wear-resisting plate, a spherical support body, a third wear-resisting plate and a bridge beam body fixing plate; which is characterized in: a first central shaft hole is formed in the center of the cavity of the upper support plate; a second central shaft hole is formed in the center of the first wear-resisting plate; a third central shaft hole is formed in the center of bridge beam body fixing plate; the three central shaft holes are coincided with each other; and a central shaft is disposed with its lower end fixed with the first central shaft hole and its upper end extended into the third central shaft hole. Advantages: when a bridge beam body is placed on the bridge beam body fixing plate and dragged, the spherical support can not only support the bridge beam body, but also ensures the bridge beam turnable, thereby can ensure the safety and no traffic interruption of the trunk road under the bridge beam body in the pavement process.

The invention relates to a split rotating shaft joint, which is characterized by comprising a front shaft, a middle shaft, a rear shaft, a middle sleeve, an oil distribution sleeve and a water distribution sleeve which are split, wherein after assembly, the middle shaft is positioned between the front shaft and the rear shaft; the middle sleeve is sleeved outside the middle shaft; and the oil distribution sleeve and the water distribution sleeve are sleeved outside the rear shaft. The split rotating shaft joint has the advantages of simplified processing technology, high measurement operability, good size precision, and better coaxiality after the assembly compared with an integral structure by adopting a split structure.

The invention discloses a large-deformation energy-dissipation restorable easy-to-repair outrigger truss system. The outrigger truss system comprises a shear wall, a framework column, an outrigger truss and two auto-restoration energy-dissipation type supporting sections, wherein the outrigger truss is arranged between the shear wall and the framework column. The outrigger truss comprises an upperchord member and a lower chord member, the lower chord member and the upper chord member are parallel to each other and spaced, and the lower chord member is located under the upper chord member; theupper ends of the auto-restoration energy-dissipation type supporting sections are arranged towards each other and connected with the upper chord member, and the lower ends of the two auto-restoration energy-dissipation type supporting sections are away from each other and are connected with the lower chord member. The upper chord member and the lower chord member are chords and each comprises aplurality of sections. The outrigger truss system further comprises buckling-restrained section weakening energy dissipation connection sections which are connected between the two horizontally adjacent sections of the chord members. The large-deformation energy-dissipation restorable easy-to-repair outrigger truss system has sufficient ductile deformation capacity and residual deformation controlcapacity, post-earthquake restoration is easy, and the functional restorability of the structure can be improved.

The invention discloses a chip removal cleaning device for exhaust pipe production. The chip removal cleaning device for exhaust pipe production comprises a cleaning box, wherein a dust suction pump is fixed to one side of the inner wall of the top of the cleaning box; a liquid discharge pipe is arranged at the bottom end of one side of the cleaning box; a water tank is arranged at the top of thecleaning box; the bottom of the water tank is connected with a communication pipe; a sprinkling disc is fixed to the bottom of the communication pipe; a connecting rod is rotatably connected between the outer wall of the bottom of the sprinkling disc and the inner wall of the bottom of the cleaning box; and blades distributed in an annular array are fixed to the top end of the circumferential outer wall of the connecting rod. According to the chip removal cleaning device for exhaust pipe production, the connecting rod is rotatably connected to the middle position between the sprinkling disc and the bottom of the cleaning box, and the blades with corrugated structures are arranged at the top end of the outer wall of the connecting rod and are impacted in the sprinkling process of the sprinkling disc, so that the connecting rod and a scraper outside the connecting rod are driven to rotate, debris and dust attached on the inner wall of the cleaning box are scrapped off by the rotating scraper and a cleaning brush, and thus, the inner wall of the cleaning box is conveniently cleaned.

The invention discloses a large pipe end face small circular boss flatness measuring tool which comprises a support device and a radial guide rod assembly. The support device comprises a center cylinder, a center ring arranged at the periphery of the bottom end of the center cylinder and at least three groups of support adjusting rod devices. The supporting adjusting rod devices comprise adjustingrods and supporting rods, ends of the supporting rods are connected with the periphery of the center ring, the other ends of the supporting rods are telescopically connected with cambered surface base plates used for being connected with the inner circular surfaces of the pipelines, ends of the adjusting rods are connected with the center cylinder, and the other ends are connected with the supporting rods through adjusting assemblies; the adjusting assemblies are used for adjusting the distances between the supporting rods and the adjusting rods. The radial guide rod assembly comprises a guide rod, the guide rod is perpendicular to the axis of the center cylinder, the guide rod is rotatably connected to the top end of the center cylinder through a rotating assembly, and the guide rod is further connected with a lever indicator for measurement. The tool is convenient to measure, and the measurement error can be controlled within an extremely small range.

The invention discloses a device specially used for fermentation treatment of biological products. The device comprises a tank, a fixing plate, a motor, a tank cover, a stirring shaft and a second chimeric block, wherein the fixing plate is movably installed in the tank, and clamping grooves are formed in the outer wall of the fixing plate; limiting strips are movably engaged in the clamping grooves; a filter screen is installed in the fixing plate; the stirring shaft is connected with the middle position of the filter screen in an inserting way; stirring rods are fixed on the outer wall of the upper end of the stirring shaft; a first chimeric block is fixed at the lower end of the stirring shaft; the motor is installed on the lower surface of the tank by means of a motor fixing frame; a motor shaft, passing through the lower surface of the tank, is rotatably installed on the upper surface of the motor; the second chimeric block is fixed at the upper end of the motor shaft. The devicespecially used for the fermentation treatment of the biological products is provided with the fixing plate which can be flexibly taken out, so that residues obtained after fermentation can be conveniently taken out; furthermore, the stirring rods are driven to stir fermentation raw materials by means of the motor, so that the fermentation raw materials are enabled to be fully mixed with added zymocytes well, and the fermentation effect is improved.

The invention discloses a rapid deburring device for new energy automobile motor shell machining, and relates to the technical field of deburring devices for motor shell machining. The processing efficiency is improved. The rapid deburring device specifically comprises a workbench, a translation sliding groove is formed in the outer wall of the top of the workbench, a translation motor is arranged on the outer wall of one side of the workbench, the output end of the translation motor is rotatably connected with a translation screw through a coupler, the inner wall of the translation sliding groove is slidably connected with two mounting plates, and the mounting plates are connected to the outer wall of the translation screw through threads. By arranging a mounting head, an annular air bag and other structures, a motor shell can be mounted on the mounting head, and an air pressure generating device is controlled to work to inflate the annular air bag, so that the annular air bag is expanded to reliably support the motor shell, and mounting is rapid and convenient; and by arranging a grinding piece assembly, the translation motor and other structures, the translation motor can be controlled to drive the mounting head on the mounting plate to move, so that grinding is realized under the rotation of the grinding piece assembly.

The invention discloses a rotary lamp and a rotary stage lamp. The rotary lamp comprises a bracket, a rotary disc, a central lamp unit and at least two rotary lamp units. The bracket is internally provided with a rotary driving mechanism. The rotary disc is arranged on the bracket and provided with a sun gear and a circular slide rail, and the sun gear is connected with the rotary driving mechanism. The central lamp unit is arranged on the center of the rotary disc, the circular slide rail is provided with at least two slide mechanisms, the at least two rotary lamp units are arranged on the slide mechanisms, one ends of the slide mechanisms are connected with the sun gear, and the slide mechanisms slide on the circular slide rail around the sun gear. The rotary stage lamp comprises a base, a supporting frame and the rotary lamp, the supporting frame is rotationally connected to the base, and the bracket is rotationally connected to the supporting frame. The rotary lamp and the rotary stage lamp are simple in structure, convenient to maintain and ideal in light effect.

The invention discloses a device for machining a gantry and transferring a right-angle milling head of the gantry. The device comprises a bottom plate, wherein pairwise symmetrical supporting columnsare arranged on the surface of the top end of the bottom plate, and fixing rotating shafts are rotationally transmitted to the surfaces of the two sides of the supporting columns; limiting plates arefixed to the surfaces of one sides of the fixing rotating shafts, and a storage box is fixed to the surfaces of the other sides of the fixing rotating shafts; and rubber base plates are fixed to the front surfaces of the supporting columns, U-shaped fixing frames are fixed to the front surfaces of the supporting columns, the rubber base plates are located on the inner sides of the U-shaped fixingframes, and fixing springs are arranged at the connecting positions between the U-shaped fixing frames and the rubber base plates. By arranging an inserting rod, a worker can conveniently and rapidlyadjust the angle of the storage box; by arranging sponge blocks, the surfaces of the fixing rotating shafts can be conveniently and rapidly lubricated, so that the rotating effect of the storage box is guaranteed; and by forming a fixing groove, the right-angle milling head can be conveniently and rapidly clamped and fixed, so that the stability of the device is improved.

The invention discloses a portable food detection method, which comprises the following steps: S1, putting food to be detected into a mixing barrel on a rotating frame, and adding an extracting solution into the mixing barrel at the same time; s2, stirring the extracting solution and the food sample through a driving and mallet pounding mechanism, so that the food is fully dissolved in the extracting solution; and s3, discharging the stirred solution into a filter cartridge through a stalling discharging mechanism for storage. The portable food detection method is scientific and reasonable in structure and safe and convenient to use, the driving and mallet pounding mechanism is arranged, a driving motor and a guide wheel are matched to drive the mixing barrel to rotate, an extracting solution and food in the mixing barrel are rotationally stirred, the mixing effect is improved, the food is conveniently dissolved in the extracting solution, sampling is convenient, meanwhile, through the cooperation of a driving gear and a driven gear, in the rotating process of the mixing barrel, a screw rod is driven to rotate, a reciprocating plate ascends along the screw rod to be attached to a top plate, a travel switch is started, and a driving motor rotates reversely.

The steering device of motorcycle includes one directional column, one upper connecting plate with one through hole for the directional column to penetrate, and one semi-circular key between the directional column and the upper connecting plate. The directional column has one upper thread section and one lower conic section. The through hole in the upper connecting plate has one upper conic part and one lower straight part in the diameter not smaller than the maximum diameter of the conic part, with conic part being matched with the conic section in the directional column. The present invention has reasonable structure, high connection reliability between the directional column and the upper connecting plate and other advantages.

The invention discloses a wind power generator set and a power generation method thereof. The wind power generator set comprises an embedded plate, a base and a box body, a first hollow rod is vertically and fixedly installed at the center position of the upper end of the box body, a special-shaped block is fixedly installed at the upper end position of the first hollow rod, a lighting mechanism is arranged at the outer side end position of the first hollow rod, a guide plate is fixedly installed at the right side end position of the special-shaped block, and a first rotating shaft is movably inserted to the left side end position of the special-shaped block in a penetrating manner. Sliding friction is changed into rolling friction through first balls and second balls, the flexibility of a bearing plate is improved, rotation work of the bearing plate is convenient, and therefore when wind blows, the guide plate is blown till the guide plate rotates to the position the same as the wind direction, the bearing plate is driven to rotate, and whole equipment rotates to the wind direction position, automatic direction adjusting work is convenient, it is guaranteed that blades face the wind direction position, and the specific mounting direction does not need to be selected.

The invention provides a garbage intercepting, salvaging and dewatering device for water conservancy riverway pollution treatment, and relates to the technical field of pollution treatment. The devicesolves the problems that in the traditional riverway solid garbage clearing process, solid garbage is intercepted generally by arranging fences in riverways, the intercepted garbage is salvaged manually, the method is low in working efficiency, when too much garbage exists in water flow, the intercepted garbage cannot be salvaged in time, and river water quality is easily affected. The device comprises a salvage bucket, each of the left side and the right side of the front end of a main body is provided with a collection baffle, a rotating shaft is connected into the top of the main body, thesalvage bucket is connected to the rotating shaft, the top ends of tooth parts are connected to the two ends of the rotating shaft, the number of the tooth parts is two, and the two tooth parts are connected into the two sides of the main body respectively. According to the device, the garbage is intercepted through the salvage bucket, so that the garbage is temporarily located in the salvage bucket, the salvage bucket is driven by a waterproof motor to turn over, and the garbage in the salvage bucket is dumped into a storage basket, so that the garbage is collected in a centralized mode.

The invention relates to the technical field of greenhouses, and discloses an automatic ventilation device of a greenhouse and the greenhouse. The automatic ventilation device comprises a container with a closed cavity, a connecting pipe and a transmission mechanism; the container is provided with a connector communicated with the closed cavity, and first fluid is arranged in the closed cavity ; the connecting pipe is communicated with the connector, a first piston is arranged at the end, close to the connector, of the connecting pipe and / or in the connector, and second fluid is arranged in the connecting pipe; the transmission mechanism is used for driving a skylight and comprises a second piston, the second piston is arranged at the other end of the connecting pipe, and second fluid is located between the first piston and the second piston; and when the pressure in the closed chamber changes, the second piston can be driven by the first piston and the second fluid. The automatic ventilation device has the advantages that electric drive is not needed for the automatic ventilation device, the temperature in the greenhouse can be correctly sensed, the ventilation effect is good, thewindow opening sensitivity is adjustable, and the application range is wide.

The invention provides a surface accumulated snow removing device of a solar photovoltaic module. The surface accumulated snow removing device comprises a spiral conveying rod and a brush rod. Two supporting wheels are rotationally installed at the left end and the right end of the upper part correspondingly, and a draught fan is installed at the top of the upper part. A driving motor is connectedwith an external control circuit through a power line; the driving wheels are connected to the left end and the right end of the upper part correspondingly, and the tops of the driving wheels are connected with asynchronous belt. The driving upper shafts are rotationally installed at the left end and the right end of the upper part correspondingly, the transmission upper shafts are rotationally installed at the left end and the right end of the upper part correspondingly, and the driving upper shafts are located outside the transmission upper shafts. The top of the lower part is connected with the bottom of the upper part. Accumulated snow covering the top of the photovoltaic power generation panel is conveyed to the bottom through the rotating spiral conveying rod, the thickness of the accumulated snow on the top of the photovoltaic power generation panel is reduced, the accumulated snow remaining on the top of the photovoltaic power generation panel is swept through the rotating brush rod, the top of the photovoltaic power generation panel is kept in a clean state, and the power generation effect of the photovoltaic power generation panel is guaranteed.

The invention discloses an X-brace type energy dissipation device which comprises core battens, lug plates, dowels, gaskets, an upper ejection plate and a lower ejection plate. Each sliding contact position is provided with antifriction materials. The core battens are arranged in a crossed mode and in pairs. Designers can selection reasonable pair numbers of the core battens according to needs. According to the X-brace type energy dissipation device, axial deformation of the core battens is utilized to dissipate seismic energy, the lug plates mainly play a role of fixing, and the dowels in the centers of the core battens play a role of enabling every two core battens to be connected, when one core batten is pressed, the computation length can be reduced by utilizing connection dowels of the pulled core battens, and then buckling instability can be avoided. The pair numbers of the core battens can be adjusted according to requirements of project designs, and then the energy dissipation device can be used.

The invention discloses a high-stability mounting frame with a telescopic structure for building construction, and belongs to the technical field of building construction. The high-stability mounting frame comprises a mounting top frame, a built-in discharging plate, a transmission mechanism, a driving motor, a base, a telescopic mechanism and a transmission rack, wherein the driving motor is fixedly arranged in the base. The high-stability mounting frame is designed to be liftable, and can be lifted according to needs, the built-in discharging plate is arranged in the mounting frame, the built-in discharging plate is composed of a first combined plate and a second combined plate; when the mounted structure needs to be disassembled at ordinary times, the mounting top frame is directly driven to descend; when a convex column of the mounting top frame touches a top column to generate extrusion, after the convex column is retracted into an inner mounting groove, an outer jacking spring loses limitation, the built-in discharging plate can be automatically jacked out, the first combined plate is automatically inclined downwards; and at the moment, the disassembled structure can be directly and quickly slid down and taken down through the inclined first combined plate. Compared with a mode of directly lifting the disassembled structure away, the mounting frame is labor-saving.

The invention discloses a multifunctional cantilever cane of a watering cart and a control method of the multifunctional cantilever crane. The multifunctional cantilever crane of the watering cart mainly comprises a base, a cantilever crane system, a position adjusting device, a working device and a rotation device, and the cantilever crane system comprises an arm 1, an arm 2 and an arm 3; the position adjusting device comprises a hydraulic cylinder 1, a hydraulic cylinder 2 and a hydraulic cylinder 3; the working device comprises a watering mechanism, a sweeping mechanism and a grass-cuttingmechanism; the rotation device is composed of a motor 1, a motor 2 and a motor 3. The control method of the multifunctional cantilever crane comprises the steps of system initialization, hydraulic control judgment and spraying control judgment. The multifunctional cantilever cane is high in automated degree, compact in structure, reasonable in function design, and suitable for watering, sweeping,grass cutting and insecticide spraying for various complex road surfaces, steps and green belts.

The invention discloses a lifting device with high safety performance for cargo loading and unloading. The lifting device comprises a base, a lubricating mechanism and a placing mechanism, a support frame is arranged on the surface of the top end of the base, the support frame is movably connected with a threaded screw rod, a clamping device is arranged on the surface of one side of the threaded screw rod, and a sleeve is fixedly connected in the clamping device. Through the arranged piston barrel, the situation that when the sleeve slides on the threaded lead screw for a long time, the friction force of the contact face is increased, and the clamping device rotates on the threaded lead screw slowly after clamping cargo is effectively avoided, lubricating on the surface of the threaded lead screw is facilitated, the service life of the threaded lead screw and the sleeve is prolonged, the rotating effect of the threaded lead screw is guaranteed, the working efficiency of the lifting device is further improved, the situation that the lifting device does not provide space for placing parts is effectively avoided through the arranged placing groove, when the lifting device breaks down, the parts can be rapidly replaced, and the maintenance efficiency of the lifting device is improved.

The invention relates to the technical field of children education, and discloses a neck limiting mechanism of a children education demonstration robot. The mechanism comprises a body part, the top of the body part is fixedly connected with a rotation limiting mechanism, the interior of the rotation limiting mechanism is movably connected with a bottom wire, and the exterior of the bottom wire is fixedly connected with an inner conducting ring. When a first electromagnetic block and a second electromagnetic block are powered on, the first electromagnetic block and a first positioning magnetic block repel each other, a second positioning magnetic block and the second electromagnetic block repel each other, the first positioning magnetic block and the second positioning magnetic block are connected with a first positioning groove and a second positioning groove in a clamped mode respectively, so that when the children swing the head of the robot by an external force, the head of the robot can be conveniently fixed through the first positioning magnetic block and the second positioning magnetic block, the stability of the position of the head of the robot is effectively guaranteed when the children rotate the head of the robot, the demonstration effect of the robot is guaranteed, and the interest of the children in sciences and technologies is improved.

The invention discloses an auxiliary spring device adopting a torsion bar as an elastic element. The device comprises symmetrically arranged frames, a rear axle arranged at the lower parts of the frames and a torsion bar connected with the upper parts of the frames at two sides, a main spring is arranged at one sides of the frames, hinged supports are arranged at two ends of the main spring, a plate spring pressing plate is arranged at the upper part of the main spring, and the plate spring pressing plate is fixedly connected with the rear axle through a plurality of U-shaped bolts; bearing pedestals are arranged at the two ends of the torsion bar, bushings are arranged in the bearing pedestals, and the torsion bar is installed in the bushings. Rocker arms are arranged at the two ends of the torsion bar in a front-back reverse mode, the contact ends of the lower portions of the rocker arms are free ends, the rocker arms do not make contact with the plate spring pressing plate when a vehicle is in a no-load or light-load state, the suspension system only acts on the main spring, and when the vehicle reaches a certain load, the rocker arms make contact with the plate spring pressingplate, and the main spring and the torsion bar jointly act. By the adoption of the mode that the steel plate spring main spring and the torsion rod auxiliary spring are combined, the weight of the auxiliary spring in the suspension system is reduced, so that the unsprung mass is reduced, and the vehicle running smoothness is improved.

The invention discloses bamboo woven basket forming equipment and a bamboo woven basket forming process, and relates to the technical field of bamboo woven basket forming. The bamboo woven basket forming equipment and the bamboo woven basket forming process aim at solving the problems that forming equipment is not high enough in flexibility and cannot be well adjusted according to actual processing requirements. Bottom supporting frames are installed on the two sides of the lower portion of a weaving fixing table correspondingly, vertical electric telescopic rods are installed on the bottom supporting frames, side supporting frames are installed on the vertical electric telescopic rods, transverse electric telescopic rods are installed on the inner sides of the side supporting frames, weaving push blocks are installed at one ends of the transverse electric telescopic rods, a central rotating table is installed in the middle position of the upper portion of the weaving fixing table, a rotating motor is installed in the middle position of the lower portion of the weaving fixing table, and a fixing supporting vertical rod is installed at the rear end of the weaving fixing table.

The invention discloses an aquatic feed crushing and mixing device convenient to discharge. The aquatic feed crushing and mixing device comprises a fixing box, crushing blades and a shelf, wherein a feeding opening is formed in the top end of the interior of the fixing box, and a scattering plate is installed on the inner side of the feeding opening; a first rotating rod is installed below the scattering plate, a sleeve plate is connected with the outer side of a rotating disc, the sleeve plate is slidably connected with the fixing box through a clamping block, and the crushing blades are arranged on the outer side of the first rotating rod; and a first protective cover is arranged on the left side of the fixing box, the shelf is located below a belt wheel, the bottom end of the fixing rodis connected with a spring, a motor is installed on the outer side of the lower left end of the fixing box, and a push plate is arranged on the outer side of a second rotating rod. According to the aquatic feed crushing and mixing device convenient to discharge, sufficient crushing of raw material can be guaranteed, the raw material can be conveniently crushed, meanwhile, the mixed raw material can be conveniently discharged, and rapid and efficient production of aquatic feed is facilitated.

The invention discloses an insulation pbt material filtering equipment for electronic appliances. The insulation pbt material filtering equipment comprises a base, a lubricating mechanism, a cleaningmechanism and a damping mechanism; a filtering box body is arranged on the surface of the top end of the base, a supporting plate is arranged on the surface of one side of the filtering box body, a motor is arranged on the surface of the top end of the supporting plate, a rotating shaft is rotationally connected with the surface of one side of the motor, a support is arranged on the surface of theinner side of the base, the rotating shaft penetrates through the base and is rotationally connected with the support, the lubricating mechanism is located on the surface of the inner side of the support, and the lubricating mechanism comprises a mounting groove. Through the arrangement of the motor, the service life of the rotating shaft is prolonged, the rotating effect of the motor on a first-layer filter screen is guaranteed, and the filtering efficiency of the equipment is improved; through the arrangement of a pull handle, the cleaning work of workers is facilitated, and the flow guideeffect of a filter residue discharge pipe on filter residues is guaranteed; and through the arrangement of a damping limiting plate, the stability of the motor is improved, and the service life of themotor is prolonged.

The invention discloses a winding device for circuit laying. The winding device for circuit laying comprises a bottom plate, wherein a support frame is fixed to the top end of the bottom plate; a motor is fixed to the surface of one side of the support frame; a rotary shaft is rotationally connected to the output shaft of the motor; the rotation of the rotary shaft is transmitted to the inner sideof the support frame and a winding reel is fixed to the tail end of the rotary shaft; a fixed sleeve is fixedly connected to the support frame and the rotary end of the rotary shaft in a sleeved manner; a push rod movably penetrates into the outer wall of the fixed sleeve; the push rod extends into an empty cavity of the fixed sleeve and a push plate is fixed to the tail end of the push rod; an extrusion spring is arranged at the junction of the push plate and the empty cavity of the fixed sleeve; and a sponge block is arranged on the surface of one side of the push plate. Through the arranged sponge block, convenient and efficient lubrication for the surface of the rotary shaft is benefited; through an arranged brush head, convenient and rapid cleaning for dust and other impurities on the surface of the rotary shaft is benefited; and through an arranged limit plate, a guarantee on the normal working of the device is benefited, buffering for vibration of the device during working is facilitated, and the stability of the device is improved.

The invention provides a pushing type overturning and collecting cart for tennis training, relates to the technical field of tennis training, and solves the problem that when a traditional tennis ballcollecting cart is used, the tennis ball collecting effect on the left side and the right side of a cart pushing route is poor, the cart direction needs to be adjusted to realize the collection workof tennis balls on the left side and the right side of the cart, and then tennis ball picking and collecting efficiency is low. The pushing type overturning and collecting cart for tennis training comprises a cart body and collecting impellers. A tennis ball collecting cavity is formed in the cart body; a tennis ball conveying channel is formed in the rear side of the cart body; and an assemblingchute is formed in a channel opening in the bottom of the tennis ball conveying channel. In the pushing process of the device, part of propelling force of the cart body can be converted into driving force of plastic rotating covers to drive the plastic rotating covers on the left and right sides of the cart body to rotate, and tennis balls on the ground on the left and right sides of the cart bodyare rotationally conveyed to the middle of the front end of the tennis ball collecting plate through the plastic rotating covers so that the tennis balls can be collected and the tennis ball collecting efficiency is improved.