31results about How to "Quick tighten" patented technology

The utility model relates to the technical field of hemostasis tools, in particular to a compression hemostasis device for quickly fixing limbs, which comprises an arc-shaped plate, an opening is arranged in the middle of the arc-shaped plate, a compression rod is arranged in the opening, a sterile gauze wrapping block is mounted at the bottom end of the compression rod, two ends of the arc-shaped plate are connected with elastic bandages, and through holes are arranged at two ends of the arc-shaped plate. A rack is arranged on one side of the compression rod, and a buckle is installed at the position, close to the rack, of the arc-shaped plate and matched with the rack in a clamped mode. According to the compression hemostasis device for rapidly fixing the limb, the design of the arc-shaped plate and the compression rod is adopted, the compression hemostasis device can be rapidly fixed to the injured limb, tedious winding and knotting are not needed, and therefore the treatment time is greatly saved. The sterile gauze wrapping block in the device can be in direct contact with a wound, a clean hemostasis environment is provided, and infection is prevented. In addition, due to the detachable connection mode of the gauze wrapping block and the compression rod, the use convenience and sanitation are improved.

The utility model discloses a monitoring network wiring tool, which comprises a wire arranging platform, a wiring tightening mechanism, a tightening auxiliary mechanism and a lead screw adjusting mechanism, and is characterized in that the wiring tightening mechanism comprises a wire arranging pipe, a moving rod, a sliding block, a moving block, a moving groove and a tightening plate; the tightening auxiliary mechanism comprises a locking rod, a locking head, a locking spring, a longitudinal plate, a longitudinal groove and a deep groove hole, the lead screw adjusting mechanism comprises a driving motor, a lead screw, a threaded block and a side frame, through the design of a moving rod, a sliding block, a moving block, a moving groove and a tightening plate, a cable can be quickly and efficiently tightened, the wiring process is simplified, and the wiring efficiency is improved. The design of the tightening plate ensures the consistency and stability of cable tightening, the design of the locking rod, the locking head and the locking spring ensures the safety in the wiring tightening process, and the cable is prevented from slipping or shifting in the tightening process.

The utility model relates to bag making machine technical field discloses a kind of non-woven fabric three-dimensional bag making machine with rubber sticking deviation correction, including bag making machine ontology, bag making machine ontology side is provided with support, support inside is provided with winding roller, support inner wall side is rotatably connected with limit roller one, support inner wall is rotatably connected with limit roller three close to limit roller one side, support inner wall is equipped with tensioning adjusting mechanism, support outer wall side is fixedly connected with mounting bracket, the mounting bracket inside is equipped with mounting mechanism.In the utility model, the basic tension is set by rotating screw one, and the dynamic tension fluctuation is absorbed by the buffer assembly composed of spring one. This static adjustment and dynamic buffering combination solves the wrinkle and deformation problem caused by uneven tension of the fabric, ensures constant conveying tension, and improves the finished product size precision and quality consistency.

The utility model relates to the technical field of anti-interference wire harnesses, and discloses a new energy automobile anti-interference high-voltage wire harness, which comprises two wire groups, the bottom of one wire group is fixedly connected with a base, the top of the base is fixedly connected with an arc-shaped soft plate I, and the outer wall of the arc-shaped soft plate I is fixedly connected with a plurality of clamping blocks I; the outer wall of the first arc-shaped soft plate is fixedly connected with a first push block, the top of the base is fixedly connected with two second arc-shaped soft plates, the outer wall of one second arc-shaped soft plate is fixedly connected with a second push block, the outer wall of the wire set is fixedly connected with a hollow column, and the interior of the hollow column is fixedly connected with a dismounting assembly. According to the utility model, bundling and tightening are realized, by tightening the wire harness, the occupied space can be reduced, the installation is more compact, the cable is especially suitable for application occasions with limited space, and the tightened wire harness can reduce abrasion caused by vibration or movement and prolong the service life of the cable.

The present invention provides a main cone anti-rotation device, which is installed on a reduction housing of a main reducer, and comprises a connecting plate and a limiting mechanism, wherein the connecting plate is fixed on the reduction housing, and the connecting plate has a top surface and a bottom surface which are arranged opposite to each other; the limiting mechanism is arranged on the bottom surface, and the limiting mechanism comprises a stop block, which is arranged along the radial direction of the main cone anti-rotation device, and is used to be connected with the transmission mechanism of the main reducer, that is, the limiting mechanism is connected with the driven cylindrical gear, and accurate positioning in the radial direction is achieved without adding limiting parts, thereby preventing the driven cylindrical gear which rotates synchronously with the transmission shaft from rotating, and further preventing the transmission shaft from rotating, that is, locking the transmission shaft, and achieving the purpose of quickly tightening the nut.

The application discloses a turnover chain machine, which belongs to the field of logistics and storage. The machine can significantly reduce the installation space of the driving assembly and the maintenance cost, and improve the stability of the equipment and the smoothness of logistics. The turnover chain machine comprises a fixed rack assembly, a turnover rack assembly driven by a turnover driving assembly is arranged on one side of the fixed rack assembly, the turnover rack assembly can be reciprocally turned around the shaft at the joint of the fixed rack assembly, two groups of conveying chain assemblies composed of end-to-end joints are arranged on the fixed rack assembly and the turnover rack assembly and driven by a conveying driving assembly, the fixed rack assembly is vertically supported by a fixed supporting leg assembly, and the turnover rack assembly is vertically supported by a turnover guiding supporting leg assembly during the conveying of goods, and the turnover driving assembly is arranged on the inner side of the end of the joint of the turnover rack assembly and the fixed rack assembly.

The invention discloses an electric power transmission line lightning protection device, and relates to the technical field of electric power lightning protection, the electric power transmission line lightning protection device comprises a lightning protection mechanism, a plurality of lightning rod mechanisms are distributed on the top of the lightning protection mechanism, and a protection mechanism is arranged on the outer side of each lightning rod mechanism. The connecting ring and the inserting seat are connected, certain frictional resistance is generated, then the stable inserting effect is achieved, the butt joint groove and the butt joint ball are in butt joint in the inserting process, the guiding effect is conveniently provided, the butt joint ball is pushed in cooperation with the telescopic column and the spring, and therefore certain reverse thrust is conveniently provided for the inserting seat, and the inserting effect is improved. Through cooperation of outward thrust, the limiting fastener is tightly fastened on the limiting disc to achieve a quick fixing effect, the mounting and dismounting efficiency can be improved, the limiting ring is in threaded connection with the outer wall of the inserting sleeve, the thread path is set to be short, quick screwing is facilitated, and when the limiting fastener is fastened, the limiting fastener can be quickly fixed. And the limiting fastener is further limited through the limiting ring, so that the mounting stability is effectively improved.

The invention relates to the technical field of automobile part machining, and particularly discloses automobile bending arm clamping piece forging equipment which comprises a stamping table and stamping equipment, the stamping table is located in the stamping equipment, a lower forging die is arranged on the surface of the stamping table, and an upper pressing die installed on the stamping equipment is arranged above the lower forging die. An exchange rail is arranged on the rear side of the stamping equipment, and a switching mechanism is arranged on the rear side of the lower portion of the lower forging die. According to the automobile bending arm clamping piece forging equipment, by arranging the efficient switching mechanism, rapid unfolding and tightening of the die are achieved, so that the forging die can be rapidly switched in the stamping work of different bending arm clamping pieces, the equipment is provided with the stable fine adjustment mechanism, the gap between the new forging die and the upper pressing die is allowed to be accurately adjusted, and the stamping efficiency is improved. And due to the design of the supporting frame structure and the adjusting base, the new forging die can be accurately locked and stably supported during installation, and the stability of the die in the forging process is guaranteed.

The invention belongs to the technical field of fastener installation, and particularly discloses an intelligent bolt back nut tightening device and a tightening method.The intelligent bolt back nut tightening device comprises a lifting support, and the front side of the lifting support is connected with a tightening base in an up-down driving mode; the front side of the tightening base is provided with a positioning and turning device used for positioning and driving a to-be-tightened piece to rotate and a sensing and locating device used for recognizing the tightening position, the front side of the tightening base is further movably connected with a tightening unit, the tightening unit comprises a movable arm, and the movable arm is in sliding connection with the tightening base. A rotary tightening device used for tightening the back nut is connected to the movable arm in a front-back driving mode and comprises a tightening motor, a tightening transmission base and a tightening head. And through initial information acquisition, connection of the to-be-tightened piece, angle positioning of the to-be-tightened piece, connection of the back nut, tightening of the back nut and continuous tightening or reset exiting, tightening of the back nut is achieved, and efficiency and precision are high.

The utility model discloses a floating body quick butt joint device with cable tightness structure, relates to floating body butt joint technical field, including mounting bracket, fixed base, guide wheel, mounting seat and float body, both ends of mounting bracket all are provided with fixed base, the side of mounting bracket close fixed base all is provided with guide wheel, both ends of mounting bracket all are provided with mounting seat, and the both ends of mounting bracket are symmetric distribution. Through installing along fixed base with the inside of guide wheel to cable, simultaneously along the winding of tightening wheel to cable, and can through starting to drive motor, so that drive motor can rotate the rotating rod of output end connection, so that the rotating rod can rotate the tightening wheel of connection when rotating, and then the tightening wheel can tighten the cable fast, so that floating body quick butt joint device can have better tightness adjustment effect when using.

The utility model relates to a wire tightening device for electric power engineering construction, which aims to solve the technical problem that the conventional wire tightening device for electric power engineering construction wastes time and labor in the operation process, and comprises a rectangular frame with an opening on one side, and a first roll shaft is rotatably arranged in the rectangular frame towards the opening side through a bearing; a first roll shaft is arranged in the rectangular frame, a traction braid is wound on the first roll shaft, a second roll shaft is rotationally mounted in the rectangular frame, faces the opening of the rectangular frame and is located below the first roll shaft through a bearing, the free end of the traction braid is connected with the second roll shaft, and a first mousing hook is movably mounted on the traction braid and is located between the first roll shaft and the second roll shaft; a second mousing hook is arranged on the side, opposite to the opening side, of the rectangular frame, a transmission structure is arranged on one side of the rectangular frame, and a hand lever is movably arranged on the transmission structure. The device has the advantages of rapidness, high efficiency and labor saving.

This utility model discloses an installation device for a gas-fired boiler heating pipeline, including a base plate, a housing arranged front and rear on the upper part of the base plate, a moving mechanism disposed between the base plate and the housing, a partition disposed in the middle of the upper end of the housing, a clamping mechanism disposed inside the housing, and an adjusting mechanism disposed between the movable rod, the partition, and the housing. The advantages of this utility model compared to existing technologies are: the clamping mechanism, in conjunction with the adjusting mechanism, can drive the clamping rod to rotate, causing the clamping wheel one to open outwards or retract inwards. Therefore, the clamping wheel one and clamping wheel two can be adaptively adjusted to move closer or further apart synchronously according to the diameter of the pipeline, forming a three-point support for the pipeline, making the pipeline more stable and providing a better clamping and fixing effect.

The invention relates to the technical field of endless rope winches, in particular to an endless rope winch traction shuttle car tensioning device which comprises a frame, a rope storage roller is arranged on one side of the top face of the frame, a tensioning mechanism is installed on the other side of the top face of the frame, and the tensioning mechanism comprises a T-shaped plate fixedly installed on the top face of the frame. Horizontal sliding grooves are formed in two horizontal supporting arms of the T-shaped plate, horizontal sliding blocks are slidably connected to the interiors of the horizontal sliding grooves, vertical sliding grooves are formed in vertical supporting arms of the T-shaped plate, vertical sliding blocks are slidably connected to the interiors of the vertical sliding grooves, and mounting plates are fixedly connected to the front faces of the horizontal sliding blocks and the front faces of the vertical sliding blocks. According to the endless rope winch traction shuttle car tensioning device, rapid tensioning after the steel wire rope is loosened can be achieved, when the steel wire rope is excessively tensioned, the pressure of the steel wire rope on the tensioning wheel set can be reduced by adjusting the position of the tensioning wheel set, and the excessive tensioning condition is avoided.

The application discloses a balanced axle shell automatic assembling and tightening device and method, relates to the technical field of balanced axle shell, and aims at improving the assembling efficiency; the tightening device comprises a base and a tightening part; the fixed column is rotationally connected to the outer wall of the top of the base, and the circumferential outer wall of the fixed column is connected with a gear through a key; the tightening method comprises the following steps: placing the balanced axle shell to be assembled on the top of the placing plate; the four-square clamping groove column can clamp the bolt required by the balanced axle shell assembling, the square clamping groove is arranged in the four-square clamping groove column, so that the bolt can be prevented from rotating, the gasket is arranged, the nut can be embeddedly arranged on the inner wall of the screwing block, the nut in the screwing block can be driven to rotate by the rotating motor when the bolt is limited by the four-square clamping groove column, and the nut and the bolt can be quickly tightened.

The utility model discloses a reinforcing steel bar sleeve installation tool relates to building construction equipment field, technical scheme is, including hand electric drill, the detachable setting connecting sleeve on hand electric drill, the clamping sleeve of sliding setting in connecting sleeve, the one end of connecting sleeve close to hand electric drill rotatory setting operating rod, the release lever of rotatory setting on the connecting sleeve of operating rod one side, the one end of connecting sleeve away from hand electric drill sets up the bevel, and the bevel is located the one end of connecting sleeve inner wall, the one end of clamping sleeve away from internal thread sets up the inclined plane boss, and the bevel of clamping sleeve's corresponds with connecting sleeve, and the one end of inclined plane boss away from internal thread is away from the axis of clamping sleeve, and the one end of clamping sleeve away from internal thread sets up a plurality of gap grooves, the utility model has the beneficial effects that: combining hand electric drill reduces the purchase cost, and with hand electric drill quick installation and removal, simple operation, can tighten sleeve quickly, promotes construction efficiency, reduces manual operation, reduces the artificial cost.

The utility model relates to a kind of geological drilling rotary drilling rig coring auxiliary equipment, including drill pipe knob ware and core tube auxiliary car, the drill pipe knob ware can continuously whole circle rotation and tighten or loosen drill pipe, the core tube auxiliary car can realize the automatic drilling of core tube and downhole function.The utility model is innovated by drill pipe knob ware and core tube auxiliary car, realizes the efficient collaborative operation of both, from the installation and disassembly of drill pipe in geological drilling operation and the transport of core tube these two key links, successfully solves the problem of low efficiency, many security risks under traditional operation mode, improves the efficiency, security and fluency of geological drilling operation in all directions.

The utility model relates to the technical field of docking station, concretely to a novel combined docking station, the docking station includes docking station main part and spacing piece, and spacing piece sets up at the top of docking station main part, spacing piece includes fixed pipe, spacing ring, support column, connecting frame and locating ring, fixed pipe pastes the installation at the top of docking station main part, and spacing ring is fixed at the top surface of fixed pipe, and support column is connected in the middle part of spacing ring and penetrates, and connecting frame is fixed at the top surface of support column, and locating ring is fixed at the bottom surface of connecting frame, and locating ring distributes at the outside of fixed pipe, and the bottom of fixed pipe inner wall is fixed with spring, and the top of spring is provided with support pipe, and bearing is fixedly installed in the inside of support pipe, and the inner ring of bearing is provided with connecting shaft, the utility model has the advantages of simple structure, reasonable in design, functional, can effectively and fast the advantage that data line is accomodated.

The application discloses a fish collecting device and method suitable for deep-sea net cage fish collecting, which comprises a breeding net cage, a fish collecting net, a plurality of floats, a plurality of sinkers, a power system, a first cable, a second cable and a third cable; the fish collecting net is arranged in the breeding net cage; the plurality of floats are connected with one end of the fish collecting net, and the plurality of sinkers are connected with the other end of the fish collecting net; the power system is connected with the floats through the first cable, and is connected with the sinkers through the second cable and the third cable which is wound around the bottom of the breeding net cage. When the fish collecting operation is performed, the power system, the third cable and the sinkers are cooperated to realize fast bottom covering; the power system, the first cable and the floats are cooperated to realize fast tightening of the upper end of the fish collecting net; and the power system, the second cable and the sinkers are cooperated to realize fast pulling up of the collected fish group. The whole fish collecting process does not need the underwater operation of divers, the safety is greatly improved, and the fish collecting efficiency can be greatly improved.

The invention relates to a force feedback actuator for a steering column of a vehicle, comprising a magnetorheological brake (1), the magnetorheological brake (1) having a shaft (2) arranged along an axis of rotation, and a rotor (4) and a stator (3) arranged around the shaft (2), a magnetorheological medium being arranged in a receiving space (5) formed between the stator (3) and the rotor (4), wherein the rotor (4) has at least a first and a second rotor half (4a, 4b) which are connected to one another in a forward connection.

The utility model relates to humidifying bottle assembling equipment which comprises a bottle body feeding conveying line, a rotating disc connected with the bottle body feeding conveying line, a water filling machine arranged along the rotating disc, an upper cover feeding conveying line, an upper cover screwing mechanism and a finished product discharging conveying line. The upper cover screwing mechanism comprises a pushing assembly arranged at the tail end of the upper cover feeding conveying line, a clamping jaw for clamping an upper cover from the pushing assembly, a rotating assembly for driving the clamping jaw to rotate and a lifting assembly for driving the clamping jaw to ascend and descend. The utility model provides a humidifying bottle assembling device. The design of an upper cover screwing mechanism is particularly outstanding. The upper cover can be accurately and rapidly conveyed to the clamping jaw through the arrangement of the material pushing assembly, the clamping jaw can accurately clamp the upper cover, and damage or dislocation of the upper cover is avoided. Through the cooperative work of the rotating assembly and the lifting assembly, the clamping jaw can rotate and ascend and descend according to the preset track and force, and therefore the upper cover can be rapidly and accurately screwed.

The utility model relates to ice compress bag technical field, concretely is a kind of laser depilation post lower limb ice compress bag, including ice compress bag body, ice compress bag body is inverted trapezoid, the inside fixedly connected with multiple groups of water-permeable diaphragm of ice compress bag body, two groups of water-permeable diaphragm are water absorption layer, the middle position fixedly connected with water injection pipe on the upper end of ice compress bag body, the surface of ice compress bag body is provided with fixed assembly, fixed assembly includes first bandage, first adhesive hook face, first adhesive hair face, first connecting sleeve, first connecting ring, second bandage, second adhesive hook face, second adhesive hair face, second connecting sleeve, second connecting ring and connecting band;The hook face and hair face on the surface of first bandage and second bandage cooperate to quickly fix ice compress bag body on the surface of lower limb, effectively improve ice compress bag use convenience, meanwhile, first bandage and second bandage cooperate with the connecting ring of right end thereof, first bandage and second bandage can be quickly tightened, further improve the fixing speed of ice compress bag body.

The utility model discloses a steel structure rapid butt joint device for steel structure construction, and relates to the technical field of steel structure construction. The device comprises an energy cylinder, an energy supply mechanism is arranged in the energy cylinder, a power cylinder is fixedly installed at one end of the energy cylinder, a kinetic energy rotating mechanism is arranged in the power cylinder, a connecting rotating shaft is arranged on the kinetic energy rotating mechanism, a telescopic mechanism is arranged on the connecting rotating shaft, and a rotating sleeve is fixedly installed at one end of the telescopic mechanism. And a nut clamping mechanism is arranged at the port position of the rotating sleeve. The power motor is started through the switch panel, so that the power motor drives the connecting rotating shaft and the adjusting pipe to rotate, the adjusting pipe is used for driving the rotating sleeve to rotate, the rotating sleeve can drive the nut to rotate on the bolt, and then the nut can be quickly screwed on the bolt; and the fatigue speed of the hands of constructors can be effectively reduced, and therefore the butt joint construction efficiency between the steel structure profiles can be improved.

The invention discloses an explosion-proof motor equipped with a base heat dissipation mechanism, and the explosion-proof motor comprises an explosion-proof motor, a shaft rod in transmission connection with the interior of the explosion-proof motor, a heat dissipation fan installed on the surface of the shaft rod, a protection net installed on the back of the explosion-proof motor, and a fixing mechanism installed at the bottom of the explosion-proof motor. The explosion-proof motor can be installed and fixed through the fixing mechanism, and the protection mechanisms are installed on the left side and the right side of the explosion-proof motor. According to the invention, multiple functions of the explosion-proof motor, the heat dissipation mechanism, the clutch mechanism, the synchronizing mechanism, the screwing mechanism, the stabilizing mechanism and the like are integrated, so that the multi-functionalization and high efficiency of equipment are realized, and the problems of insufficient heat dissipation and inconvenience of manual installation of a base caused by the fact that an existing explosion-proof motor is not provided with an additional external heat dissipation mechanism and an additional screwing mechanism are avoided; therefore, the motor has the advantages of being rapid in heat dissipation and convenient to install.

The utility model relates to the technical field of medical instruments, and discloses an improved traction device for a tissue clamp, which comprises a traction rope and a fixed block, the traction rope is wound on the periphery of the fixed block, one end of the traction rope is fixedly provided with a balancing weight, one end of the traction rope far away from the balancing weight is fixedly provided with a movable part, and the movable part is fixedly connected with the fixed block. The movable part is used for being movably installed on a rope body of a traction rope, the rotating block is rotationally installed on the periphery of the fixed block, and a winding groove is formed in the surface of the rotating block. After one end of the traction rope forms the telescopic movable rope knot, the movable rope knot can be conveniently sleeved on the forceps head of the tissue clamp, and then the traction rope is pulled to quickly tighten the movable rope knot, so that the operation is convenient and quick, and redundant thread ends cannot be left to shield the operation field; after the buckle ball closes the opening of the movable buckle through the buckle hole, the friction force between the buckle ball and the buckle hole is increased, so that the buckle ball is not easy to loosen.

The utility model provides a door lock installation structure which comprises a door body, an outer cover cap and an inner cover cap are arranged on the two sides of the door body respectively, a sealing gasket is connected into a clamping groove in an embedded mode, a plurality of evenly-distributed connecting shafts are arranged on the inner wall of the outer cover cap, the connecting shafts are connected with the interior of a threaded sleeve in a sleeved mode, an end is arranged at the end of the threaded sleeve, and a sleeve is fixedly connected to the inner wall of the inner cover cap. The end of the sleeve is fixedly connected with the magnet. The cover caps on the two sides of the door lock are installed through cooperation of the screw rod and the screw sleeve, the sealing gaskets are arranged to be effectively attached to the door body, meanwhile, the sealing gaskets can be embedded into the cover caps to ensure that the problem of falling off or deviation cannot occur in the installation process, the structural integrity after installation is ensured, and the service life of the door lock is prolonged. The screw rod and the sleeve are matched to realize accurate correspondence of the screw sleeve, quick tightening of the long screw rod in the mounting process is realized, the connecting shaft is arranged to realize connection of the screw sleeve, correspondence of the screw sleeve and the sleeve can be realized, follow-up mounting is facilitated, and convenience during door lock mounting is improved.

The invention provides a guardrail device for a railway track, and relates to the field of railway track structures. The guardrail device for the railway track comprises a mounting base plate, a guardrail supporting plate, a nut and a bolt. The mounting base plate is used for being attached to the guard rail. The guard rail supporting plate is used for supporting the guard rail; the nut is fixedly arranged on the mounting base plate, and the bolt is used for sequentially penetrating through the guard rail supporting plate, the guard rail and the mounting base plate and is in threaded fit with the nut. Or the head of the bolt is fixedly arranged on the mounting base plate, and the bolt is used for sequentially penetrating through the mounting base plate, the guard rail and the guard rail supporting plate and is in threaded fit with the nut. The head of a bolt or a nut can be conveniently and quickly tightened from one side of the guard rail supporting plate through an electric wrench, so that mechanical operation is carried out, and the mounting efficiency is improved.

The utility model discloses a kind of safety shoes of fast shoelace, relate to safety protective shoes field, including safety shoes main body, the bottom end fixedly connected with shoe sole mechanism of safety shoes main body, the top of safety shoes main body is also fixedly connected with assembly mechanism, the inside installation of assembly mechanism is tightened mechanism, by setting guide rail piece, poking guide block, shoelace piece etc. Component, through the sliding cooperation of poking guide block and guide rail piece, the fixed cooperation of guide protruding block and shoelace piece, so that poking guide block can be driven shoelace piece to the vamp of safety shoes main body is quickly tightened, the shoelace of the device can be tied by simple pushing and rotating operation, without traditional crossing winding and knotting step, effectively solve the technical problem that traditional safety shoes shoelace tying process is complicated, spends long time, emergency scene and frequent putting on and taking off time efficiency is low.

This utility model relates to a bread bed component, specifically a structure that can automatically tighten the bed frame. The structure includes support legs and a stress rod movably connected to the support legs. A tension spring is installed between the support legs and the stress rod. The tension spring tightens the support legs and stress rod by extending and retracting. A first pivot point is set on the support leg, and multiple second pivot points are set on the outer side of the support leg. A third pivot point is set on the end of the stress rod near the support leg. The height values ​​of the second and third pivot points are equal, and the height value of the first pivot point is greater than the height value of the second pivot points. One end of the tension spring is fixed to the stress rod at the position of the third pivot point. This structure that can automatically tighten the bed frame ensures the stability of the bed frame in the unfolded state and allows the bed frame to be easily tightened, improving the user experience. It can limit the tilting angle, achieving rapid tightening of the bed frame, making the tightening action time-saving and labor-saving, requiring only one person to operate.

According to the maintenance method for the electric wheel of the mining truck, the electric wheel can be overturned, rotated and lifted through the overturning table, and therefore the labor intensity of operators and the risk of high-altitude operation are reduced. By using the overall automatic disassembly and assembly robot, the large-torque bolt can be quickly disassembled or tightened, and the time and the labor intensity of manual operation are reduced. An operator can work on the electric moving platform, the operator can quickly reach different working points through the horizontal moving and lifting functions of the electric moving platform, and the working efficiency is improved. And the assistance arm provides assistance for manual operation, so that the consumption of an operator during disassembly and tightening of a large-torque bolt is reduced, and the injury risk is reduced. And the positioning tool can be used for accurately clamping and positioning the parts, the assembling accuracy is ensured, the walking mechanism can drive the positioning tool to move linearly, the labor intensity of workers is reduced, and the working efficiency is improved.