243 results about "Elastic cylinder" patented technology

The utility model discloses an anti-falling elastic cylindrical pin, and relates to the technical field of elastic cylindrical pins. The pin comprises an elastic cylindrical pin body, a plurality of barb structures are arranged on the outer wall of the elastic cylindrical pin body, and the barb structures protrude towards the outer side of the elastic cylindrical pin body; the barb structures are obliquely arranged relative to the axial direction of the elastic cylindrical pin body, and the direction of the barb structures is opposite to the insertion direction of the elastic cylindrical pin body during installation. The barb structure is arranged on the outer wall of the elastic cylindrical pin body, the barb structure is obliquely arranged relative to the axial direction of the elastic cylindrical pin body, and the direction of the barb structure is opposite to the insertion direction of the elastic cylindrical pin body when the elastic cylindrical pin body is installed, so that the movement of the elastic cylindrical pin body towards the outer side of the planet carrier can be better limited; therefore, the elastic cylindrical pin body is effectively prevented from falling off, the use reliability of the elastic cylindrical pin body is greatly improved, and the use stability and reliability of the planet carrier and the speed reducer are guaranteed.

The invention discloses a method for adjusting the axial rigidity of a connecting arm, which is characterized in that an elastic cylindrical component is connected between two axial butt-joint components, so that force transmission is realized by extruding the elastic cylindrical component no matter the two axial butt-joint components are mutually extruded and mutually pulled outwards in the axial direction, and the axial rigidity of the connecting arm is adjusted. And then the axial rigidity of the connecting arm is adjusted by changing the pretightening force of the elastic rubber ring in the axial direction. Stepless adjustment of the axial rigidity of the connecting arm can be better achieved, meanwhile, adjustment convenience is improved, and direct switching control of the connecting arm from flexibility to full rigidity can be achieved; the device has the advantages of convenience in adjustment, large adjustable range, better stability and the like.

The utility model relates to the technical field of vertical sound boxes, and discloses a vertical sound box plastic support assembly which comprises a vertical sound box equipment body, a supporting base used for supporting installation is arranged below the vertical sound box equipment body, and a buffering mechanism used for protection is arranged above the supporting base. The buffer mechanism comprises a rubber elastic plate, a connecting support plate and a carbon fiber support plate, an elastic cylinder and a buffer telescopic spring are arranged on the top end wall of the support base, and a plurality of rubber protection blocks are arranged on the outer wall of the vertical sound box equipment body. Through the arrangement of the rubber elastic plate, the connecting support plate and the carbon fiber support plate as well as the elastic cylinder and the buffer telescopic spring which are arranged on the support base, a buffer device is provided, and when shaking or slight impact occurs, the impact force or shaking is effectively buffered, so that the practicability is greatly improved.

The invention relates to an outdoor communication cabinet which comprises a cabinet body and further comprises a bearing box, a gas storage part, a gas spraying pipe and a driving part. An air storage part is installed above the bearing box, an opening in the right end of the bearing box communicates with the cabinet, and a dustproof net is fixed in the bearing box; the air storage part comprises a shell and a piston plate, an elastic cylinder is connected between the piston plate and a rear side plate of the shell, an air inlet valve is arranged on the rear side plate of the shell, a first sliding hole is formed in the top plate, on the right side of the dustproof net, of the bearing box, and the upper end of the air spraying pipe penetrates through the first sliding hole and extends into the piston plate. The elastic cylinder is communicated with the upper end of the gas ejector pipe through a one-way gas outlet valve arranged on the piston plate; the driving part comprises a connecting box and a rotating shaft, the interior of the connecting box is divided into an upper cavity and a lower cavity through a partition plate, the rotating shaft is rotationally arranged in the upper cavity, the upper portion of the rotating shaft is connected with a pull rope, and the other end of the pull rope backwards penetrates through the shell to be connected with the piston plate. According to the invention, the problem that the dustproof net of the outdoor communication cabinet for isolating dust is easily blocked by dust is solved.

The utility model relates to the technical field of elastic grinding heads, and discloses an elastic grinding head which comprises a bottom plate, a robot connecting flange is fixedly installed on the outer wall of the bottom plate, a driving motor is fixedly installed on the top of the bottom plate, a driving shaft is fixedly installed at the output end of the driving motor, and the robot connecting flange is fixedly installed on the driving shaft. A driving wheel is fixedly installed on the outer wall of the driving shaft, a first elastic air cylinder is fixedly installed at the bottom of the bottom plate, the piston end of the first elastic air cylinder is rotationally connected with a grinding wheel, and a tensioning air cylinder is fixedly installed at the bottom of the bottom plate. Meanwhile, a connecting frame, a sliding rod and a connecting rod are matched to drive a brush to be attached to the surfaces of the abrasive belt, the cloth wheel and the fiber wheel to move up and down in a reciprocating mode, metal dust on the surfaces of the abrasive belt, the cloth wheel and the fiber wheel can be cleaned through the brush at the moment, and the abrasive belt, the cloth wheel and the fiber wheel can better polish workpieces.

The invention relates to the field of anti-riot weapons, and discloses a front-loaded catching net bomb which comprises a bomb barrel, a launching charge arranged at the bottom of the bomb barrel, a net barrel arranged in the bomb barrel, a traction head seat arranged at the top of the bomb barrel, a plurality of traction heads arranged in the traction head seat and a catching net filled in the net barrel and connected with the traction heads. A plurality of insertion holes which are inclined outwards and are used for mounting the traction heads are annularly arrayed in the traction head seat, and blind holes which are communicated with the insertion holes and are fixedly assembled with the elastic cylinder are formed in the bottom of the traction head seat; a limiting flange is arranged at the top of the net cylinder, the limiting flange is arranged in the blind hole and pressed on the elastic cylinder through the traction head seat, an air channel is arranged between the outer wall of the net cylinder and the elastic cylinder, and a plurality of vent holes corresponding to the inserting holes are formed in the limiting flange. According to the device, the market blank of the net catching bomb in the field of pre-loading ammunition is filled, secondary starting is not needed, the traction head is pushed out directly through high-pressure gas generated by launching loading, the net expanding purpose is achieved, and the device has the advantages of being simple in structure and low in manufacturing cost.

The utility model relates to the technical field of chains, in particular to a detachable anti-rotation type conveying chain. According to the technical scheme, the chain comprises a plurality of inner chain links and outer chain links, each inner chain link comprises an inner chain plate, a sleeve and a roller, the inner chain plates are installed at the two ends of the sleeve respectively, and the roller is arranged on the sleeve in a sleeving mode and located between the two inner chain plates; the anti-rotation chain is characterized in that each outer chain link comprises an outer chain plate, a pin shaft and an elastic cylindrical pin, each pin shaft penetrates through the sleeve of one chain link and is fixed between the outer chain plates of the next chain link, and the sleeves and the pin shafts are provided with anti-rotation matching planes matched with the inner chain plates together. The chain has the advantages that the situation that abrasion is prone to occurring in the using process is avoided, the elastic cylindrical pins are arranged between the outer sides of the pin shafts and the outer chain plates, disassembly and assembly can be more convenient during disassembly, the service life during use is longer, and the combination efficiency during disassembly and assembly is higher.

The utility model relates to the technical field of cylindrical pin machining, and discloses an elastic cylindrical pin machining device which comprises a base, an electric push rod is fixedly installed on the base, the output end of the electric push rod is fixedly connected with a connecting strip, the connecting strip is fixedly connected with a rack, the rack is in meshed connection with a gear, and the gear is in meshed connection with the electric push rod. A rotating rod is fixedly connected to the gear, a clamping block is fixedly connected to the connecting block, and a driven rod is rotationally connected to the mounting block. According to the elastic cylindrical pin machining device, when the elastic cylindrical pin machining device is used, the electric push rod is started, the first connecting plate is driven to rotate through the arrangement of the rack and the gear, cylindrical pin bars are clamped through the two sets of clamping blocks and are not prone to loosening, at the moment, a handle is rotated, the lifting plate drives the motor to move downwards, and then the cylindrical pin bars are machined. The drilling depth of the drill bit can be adjusted according to cylindrical pin bars of different lengths, operation is easy, the machining process is more convenient, machining efficiency can be improved, and the use effect is good.

The invention provides a double-layer packer for coal mine hydraulic fracturing and a testing method thereof, and the double-layer packer comprises a central inner pipe which is through in the axial direction and is provided with at least one water through hole which is through in the radial direction of the central inner pipe; the central inner pipe is sleeved with the first elastic cylinder, a first expansion cavity is formed in the outer side of the central inner pipe, and the water through hole is located in the first expansion cavity; and the second elastic cylinder is arranged on the center inner pipe in a sleeving mode, a second expansion cavity is formed in the outer side of the center inner pipe, the first expansion cavity is located in the second expansion cavity, and a metal net is arranged on a cylinder body of the second elastic cylinder. According to the double-layer packer for coal mine hydraulic fracturing and the testing method of the double-layer packer, the success rate of hole sealing and pressure maintaining can be guaranteed, the construction efficiency is improved, and the fracturing engineering material cost is effectively reduced.

The utility model discloses an electronic faucet lock with memorizing and buffering functions. The electronic faucet lock comprises a lock body, a locking shaft, an elastic cylindrical pin, a sealing ring, a glue pouring shell, a lead and an electromagnet. The electromagnet is a bidirectional holding type electromagnet with memory and buffer functions, and the movable iron core of the electromagnet is connected with the locking shaft, so that the telescopic action of the locking shaft is controlled, and locking and unlocking of the faucet lock are realized. According to the technical scheme, the electronic faucet lock with the memorizing and buffering functions is novel in structure and ingenious in design, locking and unlocking actions are completed in an electric control mode, the electronic faucet lock is compact in structural design, the locking shaft is high in strength, long in extension length, reliable in anti-theft performance, intelligent, small in size, small in part number and high in practicability, and the memorizing and buffering functions are achieved. The product is light in weight, simple in structure, convenient to assemble and suitable for low-cost mass production of vehicle types with the keyless entry function.

The invention relates to the technical field of extruders, in particular to an extruder die head capable of automatically discharging, which comprises a die head shell, a material pushing assembly is rotatably arranged in the die head shell, the material pushing assembly pushes waste materials from front to back, the material pushing assembly comprises an elastic cylinder, a center pipe assembly is arranged in the middle of the elastic cylinder, and the center pipe assembly is arranged in the middle of the elastic cylinder. The central tube assembly comprises an inner central tube and an outer central tube which are sleeved inside and outside, inner supporting rods are spirally distributed on the inner central tube and extend in the radial direction of the inner central tube, and outer supporting rods are spirally distributed on the outer central tube and extend in the radial direction of the outer central tube; the inner supporting rods penetrate out of the outer center pipe, each turn of inner supporting rods is located between every two adjacent turns of outer supporting rods, the inner supporting rods and the outer supporting rods are hydraulic telescopic rods, the ends of the hydraulic telescopic rods are connected with the inner wall of the elastic cylinder, and the inner supporting rods and the outer supporting rods stretch out and draw back alternately. Therefore, the position of the spiral bulge on the elastic cylinder is changed.

The invention belongs to the technical field of filter element detection, and particularly relates to a filter element detection device and method for an air filter. Comprising a frame; a filter element; an electric expansion piece is mounted in the center of the inner bottom of the frame; a plurality of elastic cylinders are mounted on the side wall of the output end of the electric expansion piece; the elastic column body is connected with an arc-shaped clamping block; when the filter element is placed in the frame, the output end of the electric expansion piece is located in the filter element center hole, and the moving path of the arc-shaped clamping block covers the hole wall of the filter element center hole. One opposite outer side of the frame is connected with a guide sliding column, and the other opposite outer side of the frame is connected with a driving motor; a displacement lead screw is installed on the inner side of the frame. The output end of the driving motor is rotationally connected with the displacement lead screw. End points of the two displacement lead screws are oppositely arranged. Movable closed half boxes are arranged on the two sides of the filter element; therefore, the stability of the filter element during detection is improved, the detection precision of the filter element is ensured, the detection effect of the device is further improved, and the limitation of the device during use is reduced.

The utility model discloses an egg candler for baby chick hatching, which relates to the technical field of baby chick hatching and comprises a barrel, a mounting cover is mounted at the irradiation end of the bottom end of the barrel in a threaded manner, a first connecting ring is mounted on the outer side of the bottom end of the mounting cover, and an egg candling head is mounted at the bottom end of the mounting cover. An elastic protection assembly is installed on the outer side of the bottom end of the egg candling head and comprises an elastic cylinder, a protection gasket, a second connecting ring and connecting springs, the second connecting ring is installed on the outer side of the top end of the elastic cylinder, and the connecting springs are symmetrically installed at the top end of the second connecting ring; the top end of the connecting spring is connected with the bottom of the first connecting ring, and the elastic cylinder is installed on the outer side of the bottom end of the egg candling head through the connecting spring. The elastic cylinder is installed through the connecting spring and has elasticity when making contact with the egg shell, so that the situation that the egg is damaged due to collision generated when the elastic cylinder makes contact with the egg shell is avoided, and meanwhile the situation that the egg is damaged due to the fact that pressure on the egg is too large when the egg is irradiated and checked is avoided.

The invention belongs to the technical field of reinforced printers, and particularly relates to a printer top cover. A folding sliding top cover for reinforcing a printer comprises an I-section folding top cover and an II-section folding top cover which are connected through a hinge. A first-section top cover pressing strip is installed on each side of the first-section folding top cover, and an elastic cylindrical pin I is arranged at the tail end of each side of the first-section folding top cover. A section II top cover pressing strip, two elastic cylindrical pins I and an elastic cylindrical pin II are mounted on each side of the section II folding top cover; the elastic cylindrical pin II is positioned at the front end of the side of the section II folding top cover; the elastic cylindrical pin II is longer than the elastic cylindrical pin I; the pull ring is installed on the pull ring fixing plate, and the pull ring fixing plate is installed on the tail portion of the I-section folding top cover through the 90-degree hinge. Meanwhile, the invention further discloses a printer shell comprising the top cover. The top cover is designed in a folding sliding manner, so that the top cover can be conveniently pulled, used and maintained under narrow space conditions such as military vehicles.

The invention discloses a force value monitoring device for assembling an elastic cylindrical pin, which is characterized in that a plurality of contact rods are abutted against assembling devices with different shapes, so that the contact rods at different parts are extruded by different contact surfaces of the devices to move into a storage cylinder for different distances, and under the elastic force of a reciprocating spring, the elastic cylindrical pin can be automatically assembled. When the device is placed stably, the electric field box is started to form an electric field around the electric field box, the liquid electrorheological fluid in the electric field box is converted into a solid state, the position of the contact rod is fixed, and therefore the device is clamped.

The invention discloses high-performance foam light soil construction equipment and a using method, and relates to the technical field of foam light soil, the high-performance foam light soil construction equipment comprises an elastic cylinder, triangular plates are inserted into the front side and the rear side of the elastic cylinder, and second connecting plates are fixedly connected to the sides, away from the elastic cylinder, of the triangular plates and close to the bottom; the top of each second connecting plate is fixedly connected with an adjusting plate, through mutual cooperation of a transverse plate, an escalator, a second motor, a movable frame and other structures, the connecting frames and the movable frames can be moved left and right, the connecting frames and the movable frames are moved to the tops of the adjacent elastic cylinders, the escalator is moved left and right, and an operator climbs the escalator; materials are placed in the adjacent movable frames, a second motor mixes the materials, the materials enter an elastic barrel through a discharging pipe at the bottom of a connecting frame, meanwhile, a plurality of transverse plates can be installed, the transverse plates are placed in the adjacent supporting columns, the multiple transverse plates can be installed, and the working efficiency of the device is improved.

An anti-falling device for a stainless steel elastic cylindrical pin comprises an upper pressing head, and an upper pressing head abutting part abutting against the upper end of the stainless steel elastic cylindrical pin is formed at the bottom of the upper pressing head. Comprising a lower supporting base located at the lower end of the upper pressing head and opposite to the upper pressing head, a lower supporting base abutting portion abutting against the lower end of a stainless steel elastic cylindrical pin is formed at the top of the lower supporting base, the stainless steel elastic cylindrical pin is located in an assembly hole, and the upper pressing head is pressed downwards to enable the upper pressing head abutting portion to press the upper end of the stainless steel elastic cylindrical pin. The lower end of the stainless steel elastic cylindrical pin is pressed by the abutting portion of the lower supporting seat, the top and the bottom of the stainless steel elastic cylindrical pin form turnups capable of being matched with the assembly hole in a clamped mode, and the stainless steel elastic cylindrical pin can still be stably fixed in the assembly hole through the upper pressing head and the lower supporting seat under the condition of frequent vibration.

The invention discloses a steel pipe machining clamping device, and particularly relates to the technical field of metal machining machinery, the steel pipe machining clamping device comprises a device table, fixed conduction plates symmetrically arranged on the device table and a sliding loading plate connected to the fixed conduction plates in a sliding mode, and a rotatable rotating cylindrical block is installed on the sliding loading plate through a square fixing plate. A plurality of trapezoidal grooves are formed in the rotating cylindrical block in the circumferential direction, clamping square rods capable of moving in the radial direction are connected into the grooves through threaded rods, and a plurality of elastic cylindrical rods are connected to the clamping square rods through springs. The hydraulic cylinders drive the sliding loading plates to move oppositely so that the elastic cylindrical rods can stretch into the two ends of the steel pipe, then the clamping square rods can expand in the radial direction by rotating the threaded rods, the elastic cylindrical rods are tightly attached to the inner wall of the steel pipe under the action of the springs, and multi-point elastic clamping from the inner wall is achieved. The transmission system is driven by the motor to drive the clamped steel pipe to rotate, so that machining operation in the circumferential direction is facilitated. The device is stable in clamping, can effectively prevent the outer wall of the steel pipe from being damaged, and adapts to steel pipes of different specifications.

The utility model belongs to the technical field of supports, and discloses a ground disaster investigation monitoring instrument support which comprises an annular base, a supporting rod, a mounting base, ground nails, mounting holes, a mounting block and a fixing assembly. A mounting cylinder is arranged at the bottom of the mounting block, a plurality of sliding holes are horizontally formed in the mounting cylinder, sliding rods are slidably arranged in the sliding holes, and a first through hole is formed in the mounting block; a first connecting pipe is arranged in the first through hole, the lower end of the first connecting pipe communicates with a cylindrical air bag located in the mounting barrel, and the end, located in the mounting barrel, of the sliding rod makes contact with the outer wall of the cylindrical air bag. The cylindrical air bag is inflated through the first connecting pipe, so that the cylindrical air bag expands to push the sliding rod, and the sliding rod is far away from the outer end and abuts against the inner wall of the hole in the ground. When one sliding rod makes contact with a firm stone and cannot slide outwards, the sliding rod at the position does not slide, due to the fact that the cylindrical air bag is elastic, the cylindrical air bag can still push the other sliding rods to slide and extrude the inner wall of the hole, and the fixing effect is guaranteed.

The invention relates to a fetal head suction midwifery device for the obstetrics and gynecology department and belongs to the technical field of medical instruments. The fetal head suction midwifery device for the obstetrics and gynecology department comprises a supporting cylinder, an adsorption head and an adjusting assembly, a piston is slidably connected to an inner cavity of the supporting cylinder, and the two sides of the piston are connected with an air suction cylinder and an extension cylinder respectively; the adsorption head annularly surrounds the periphery of the supporting cylinder and comprises a fixed cylinder and an elastic cylinder, the fixed cylinder is connected with the supporting cylinder, and the elastic cylinder is arranged on the side, away from the supporting cylinder, of the fixed cylinder; the adjusting assembly is arranged in an inner cavity of the fixing cylinder and comprises a limiting cylinder, an adjusting block and a plurality of connecting ropes, the limiting cylinder is connected with the fixing cylinder, a plurality of clamping grooves distributed in the axial direction of the limiting cylinder are formed in the inner wall of the limiting cylinder, the adjusting block is slidably connected with the inner cavity of the limiting cylinder, a clamping rod is arranged in the adjusting block and used for being clamped with the clamping grooves, and one ends of the connecting ropes are connected with the adjusting block. The other end is connected with the elastic cylinder; and the connecting rope is configured to be tightened under stress so as to reduce the diameter of the elastic cylinder, or released under unloading so as to increase the diameter of the elastic cylinder.

The invention relates to a kind of emulsion extrusion equipment, including milking barrel, the head of the milking barrel is movably inserted with replaceable milking sleeve, the tail of the milking barrel is connected with horn barrel, the lower end of the horn barrel is connected with connecting pipeline, and the connecting pipeline is connected to the collecting barrel.By the structure of annular air bag, air pipe, adjusting cavity, elastic pull rope and elastic cylinder, when vacuum machine stops working or fails, the negative pressure in the elastic cylinder channel reduces, the adjusting cavity is dragged by elastic pull rope and is extruded to make gas enter annular air bag, so that annular air bag is inflated to strengthen the extrusion of elastic extrusion cylinder and isolation cylinder, can continuously clamp nipple and not fall, avoid negative pressure stop extrusion equipment from falling and cause pollution.

The utility model belongs to the technical field of oil and gas exploitation, and discloses a packer which comprises a central pipe, an elastic cylinder, an expansion pipe and a sealing assembly. A first liquid transfer hole is formed in the pipe wall of the central pipe; the center pipe is sleeved with the elastic cylinder, the two ends, in the axial direction, of the elastic cylinder are connected with the center pipe in a sealed mode, a first elastic cavity is defined by the outer circumferential wall of the center pipe and the inner circumferential wall of the elastic cylinder, and liquid in the center pipe can enter the first elastic cavity through the first liquid conveying hole; the elastic cylinder is sleeved with the expansion pipe, the two ends of the expansion pipe in the axial direction are both connected with the elastic cylinder in a sealed mode, a second elastic cavity is defined by the outer circumferential wall of the elastic cylinder and the inner circumferential wall of the expansion pipe, a second liquid conveying hole is formed in the expansion pipe, and external liquid can enter the second elastic cavity through the second liquid conveying hole; the sealing assembly is arranged outside the expansion pipe. The packer has an internal and external pressure balancing function, can still keep reliable setting under high pressure, and reduces the difficulty of staged fracturing operation under high temperature and high pressure.

The utility model discloses an environment-friendly cabinet isolation mechanism, which comprises a plurality of connecting shafts and two mounting plates mounted on the surfaces of the connecting shafts, a mounting space is formed between the two mounting plates, the opposite surfaces of the two mounting plates are rotatably connected with the same rotating shaft, the rotating shaft rotates to complete closing and opening, the surface of the rotating shaft is fixedly connected with a driving plate, and the driving plate is fixedly connected with the connecting shafts. Two groups of driving parts are respectively arranged in the mounting space, the left side driving part completes switching-on and switching-off actions, and the right side driving part completes grounding switching-on and grounding switching-off actions. By rotating the isolation operation shaft on the left side, an elastic cylindrical pin on the isolation operation shaft can be driven to rotate, an extension ring is driven to rotate under the cooperation of a transmission groove, then a support hub is driven to rotate, a driving shifting plate welding assembly is driven to rotate under the cooperation of a limiting groove, and then a driving roller is driven to move; and the driving plate is driven to rotate under the cooperation of the first driving groove, the rotating shaft is driven to rotate to complete opening and closing work, and compared with the prior art, a transmission structure is reduced.

The utility model relates to the technical field of oil-water separators, and discloses a hydraulic excavator oil-water separator mounting structure which comprises two oil-water separator bodies and a top cover body for sealing the oil-water separator body at the top end, and the two oil-water separator bodies are provided with a mechanism for connection. The connecting mechanism comprises two fixed ferrules, a connecting transverse plate is arranged on the two fixed ferrules, a connecting plate is arranged behind the two oil-water separator bodies, a mounting mechanism is arranged on the connecting plate, and the mounting mechanism comprises a plurality of fixed mounting plates and a plurality of threaded rods. According to the oil-water separator, through the arrangement of the elastic cylinder and the rubber cushion, excitation vibration transmitted by a platform and a supporting surface is effectively reduced, through the arrangement of the fixed mounting plate and the connecting hook, the oil-water separator body and the connecting plate are mounted more stably and tightly, and damage to the oil-water separator body caused by excitation vibration is avoided.

The invention provides a slip type fishing device special for an underground throttler. The slip type fishing device comprises an upper fixing connector, a barrel, a shaft core, a sleeve, a magnet fixing sleeve, a magnet, a first elastic cylindrical pin and a second elastic cylindrical pin. According to the slip type downhole throttler fishing device, firstly, the sleeve in the device is used for prizing the slip type downhole throttler, then the magnetic force of the magnet is used for adsorbing the slip type downhole throttler, and it can be guaranteed that the adsorbed slip type downhole throttler cannot be thrown off easily while effective fishing is conducted.

The utility model relates to the technical field of motorcycle protection, in particular to a buffering type motorcycle bumper. Comprising a bumper and a buffer mechanism, the bumper comprises a bumper body part, two fixed cylinder parts arranged on the bumper body part side by side, and an elastic cylinder part arranged on the bumper body part; the buffering mechanism is detachably arranged on the bumper and comprises a main buffering assembly detachably arranged on the elastic cylinder part, two auxiliary buffering assemblies detachably arranged on the two fixed cylinder parts respectively and a hollow pipe with the two ends arranged on the main buffering assembly and the auxiliary buffering assemblies respectively. According to the utility model, the buffer mechanism detachably arranged on the bumper is used for absorbing the force borne by vehicle collision, so that the service life of the vehicle is prolonged.

The paper string machine for paper bag string production comprises a cylinder, a rotating rod is rotatably connected to the interior of the cylinder, a rotating button is fixedly connected to one end of the rotating rod, a transverse bevel gear is fixedly connected to the outer wall of the rotating rod, a top block is fixedly connected to the interior of the cylinder, and a round rod is rotatably connected to the lower surface of the top block; the outer wall of the round rod is fixedly connected with a vertical bevel gear, the outer wall of the first fixing column is connected to the inner wall of the sliding groove in a sliding mode, the outer wall of the sliding column is connected to the inner wall of the round groove in a sliding mode, one end of the sliding column is fixedly connected with an elastic cylinder, and a fixing assembly is arranged on the outer wall of the cylinder. The sliding column slides on the inner wall of the circular groove and drives the elastic cylinder to move at the same time, the moving distance of the elastic cylinder can be adjusted according to the required elastic degree, and therefore the effects that the elastic degree of the paper rope in the twisting process can be conveniently and rapidly adjusted and maintained, and then the strength and firmness of the paper rope can be flexibly controlled according to specific requirements are achieved.

The utility model provides a high-strength engineering machinery bolt, and belongs to the technical field of bolts. The high-strength engineering machinery bolt comprises a connecting assembly and a protection assembly, limiting grooves are formed in the two sides of a screw rod, firstly, the end of the screw rod can be protected through sliding clamping connection of a telescopic cylinder and an elastic clamping ring, the end of the screw rod is located in the telescopic cylinder, and it is avoided that threads at the end of the screw rod rust due to long-term contact with air; meanwhile, the telescopic cylinder is conveniently disassembled and assembled in a clamping connection mode, the limiting block slides into the limiting groove through the elastic force of the elastic cylinder, the connection stability between the nut and the screw can be enhanced, the nut can be prevented from being separated from the screw, the limiting block can be separated from the limiting groove by pushing the shifting block, and the operation is convenient. And the nut can be rotated, so that the end position of the screw rod can be protected, the nut can be conveniently disassembled, meanwhile, the nut and the screw rod are prevented from loosening, and therefore the practicability is improved.

The utility model discloses a wireless charger, and the charger comprises a pedestal which is provided with a first installation part and a second installation part which are sequentially disposed in a first direction; a first upper cover; the lower end of the elastic cylinder is connected to the first mounting part, the upper end of the elastic cylinder is connected to the first upper cover, and the elastic cylinder, the first upper cover and the first mounting part define a first accommodating cavity for accommodating a charging module and a lifting mechanism; the charging module is connected with the first upper cover and the driving end of the lifting mechanism; the second upper cover is provided with ventilation holes and connected to the second mounting part, and the second upper cover and the second mounting part define a second containing cavity for containing a control module and a heat dissipation module; and the base is provided with a communicating channel for communicating the first accommodating cavity with the second accommodating cavity.

The present invention discloses a stress gradient automatic loading device, including a rigid frame, four rigid loading side plates are arranged in the rigid frame, the four rigid loading side plates form a square loading cavity, the rigid frame is also provided with end covers for closing both ends of the square loading cavity, a force transmission component is matched and installed in the loading cavity, a cylindrical sample loading cavity is formed in the middle of the force transmission component, the force transmission component includes an elastic cylindrical sleeve, an elastic truncated cone sleeved outside the elastic cylindrical sleeve, and a square elastic body sleeved outside the elastic truncated cone, and also includes a loading system arranged in the rigid frame for applying force to the four rigid loading side plates respectively. The present invention also discloses a loading method using the above device. The present invention has the characteristics of simple structure, convenient operation, and can realize gradient loading of sample axial stress.