217results about How to "Reduce disassembly" patented technology

The invention provides synchronous inverted arch pouring equipment, a construction method and a tunneling machine, and belongs to the technical field of tunneling. The synchronous inverted arch pouring equipment comprises a rear matching trailer set, a concrete pumping pipe used for pumping inverted arch concrete is arranged on the rear matching trailer set, the front end of the concrete pumping pipe is connected with a grouting structure, and a driving mechanism used for driving the grouting structure to move front and back to conduct inverted arch concrete pouring is arranged on the rear matching trailer set. The concrete pumping pipe comprises a stretching recovery pipe capable of stretching forwards and recovering backwards so as to accommodate the back-and-forth action of the grouting structure. During construction, the grouting structure is not affected by forward tunneling of the heading machine within a certain range, namely, after the heading machine conducts forward tunneling, the grouting structure can move backwards under the action of the driving mechanism, so that concrete in the area is fully poured, and therefore the pouring range capable of being covered by the grouting structure can be longer than that of the technology; and therefore, frequent mounting and dismounting of the formwork can be reduced, and the construction efficiency is improved.

The utility model provides an electric gear shifting executing mechanism, which relates to the field of gear shifting executing mechanisms, and adopts the technical scheme that the electric gear shifting executing mechanism comprises a driving motor, the driving motor can drive a shifting fork to linearly move, a shifting fork shaft is arranged at the upper end of the shifting fork, and the shifting fork can drive the shifting fork shaft to move. A plurality of locking holes are formed in the outer circumference of the shifting fork shaft, the locking holes are arranged in the axial direction of the shifting fork shaft, the locking holes correspond to corresponding gears, the positioning assembly comprises a shell, the end of the shifting fork shaft is arranged in the shell in an axial moving mode, a spring pin is arranged in the shell, and the spring pin is arranged in the shell. And the spring pin can extend into the locking hole. The utility model has the advantages of simple structure and higher reliability.

The utility model discloses an auxiliary string pressing device for guitar playing, and relates to the technical field of musical instrument assistors, the auxiliary string pressing device comprises a support seat and a plurality of elastic string pressing arms, one end of each elastic string pressing arm is connected with the support seat, the support seat is provided with a connecting piece capable of being detachably connected with a guitar, and each elastic string pressing arm is provided with a key and a string pressing block, the string pressing device further comprises at least one string pressing operation rod connected with the key and / or the string pressing block, the string pressing operation rod is perpendicular to the support base and can penetrate through at least one elastic string pressing arm, the corresponding elastic string pressing arm is provided with an avoiding channel for the corresponding string pressing operation rod to movably penetrate through, and a reset structure is arranged between the string pressing operation rod and the support base. The avoiding channels are channels formed by avoiding holes formed in the corresponding elastic string pressing arms or notch grooves formed in the edges of the corresponding elastic string pressing arms. According to the invention, more elastic chord pressing arms can be conveniently installed, and more chord playing can be satisfied after one-time installation.

The utility model relates to the field of atmospheric particulates, in particular to an atmospheric particulate detecting and sampling device which comprises a support and a collecting device, the collecting device comprises a shell, the top and the bottom of the shell are detachably and hermetically connected with an air inlet channel and an air outlet channel respectively, and a mounting ring for erecting a net plate is horizontally arranged on the inner wall of the shell. The upper surface of the screen plate is provided with a cross-shaped cutter groove which equally divides the surface of the screen plate into four parts, the bottom of the screen plate is fixedly connected with a push-pull rod, a circular ring is arranged above the screen plate, the left side and the right side of the circular ring are symmetrically provided with guide rods, and the guide rods are connected into guide grooves in the shell in a sliding mode and can be pulled out of the guide grooves from bottom to top; a plurality of arc-shaped pressing plates capable of fixing the filter membrane on the screen plate are arranged at intervals in the circumferential direction of the inner side of the circular ring and are arranged in a staggered cross-shaped cutter groove mode, the filter membrane is convenient to detach, vibration of the filter membrane in the detaching, moving and cutting process is relieved, the filter membrane is convenient to cut, and meanwhile the size of the cut filter membrane can be accurately controlled.

The utility model discloses an edging device for glass mirror making, which comprises a working table, a bearing plate and a grinding wheel assembly, the side end of the bearing plate is fixedly mounted on the side face of the working table, the top of the grinding wheel assembly is fixedly mounted on the end portion of a mechanical arm, and the grinding wheel assembly comprises a fixed block, a motor, a connecting rod, a sleeve, a movable column and a grinding wheel. The top of the fixing block and the end of the mechanical arm are fixedly installed, the outer surface of the motor and the inner surface of the fixing block are fixedly installed, the top of the connecting rod and the bottom of the fixing block are movably installed, the outer surface of the sleeve and the inner surface of the connecting rod are movably installed, and the end of the movable column and the inner surface of the sleeve are movably installed. The outer surface of the movable column and the inner surface of the connecting rod are movably installed, and the top of the grinding wheel and the bottom of the connecting rod are fixedly installed. And by arranging the grinding wheel assembly, a proper grinding wheel can be rotated according to the thickness of the glass lens for disassembly and assembly, the time occupied by disassembly and assembly of the grinding wheel is shortened, and the production efficiency is improved.

The invention discloses a gear pump with improved sealing performance, which comprises a pump shell, a driving assembly, a motor assembly and a sealing assembly, the sealing assembly comprises a sealing element and an elastic element, the sealing element comprises a sleeve, a first sealing ring, a second sealing ring and a third sealing ring, and the sleeve sleeves the periphery of a motor shaft; a sealing cavity is defined between the inner circumference of the sleeve and the outer circumference of the motor shaft, the first sealing ring and the second sealing ring are used for jointly blocking the sealing cavity, the motor shaft is sleeved with the third sealing ring, the third sealing ring is clamped between the inner circumference of the shaft hole and the outer circumference of the motor shaft, and when the third sealing ring loses sealing, the sealing cavity communicates with the containing cavity. Therefore, the reliability of sealing measures of the containing cavity of the gear pump is improved, and the service life of the gear pump is prolonged.

The invention relates to the technical field of solvent filtering processing, in particular to an automobile coating solvent filtering system. Comprising a support; a tank body is fixedly mounted on the supporting frame, a filtering mechanism is arranged in the tank body, an overturning part used for overturning a filter bag into a cylinder for cleaning is arranged on the tank body, a cleaning part used for removing impurities in the cylinder is arranged in the cylinder, and a driving part used for driving a sliding ring and a disc to synchronously rotate is arranged on the tank body; a conveying part for conveying a solvent into the filter bag and inflating the filter bag is arranged in the cylinder; according to the filtering mechanism, the driving part drives the filter bag to rotate, and meanwhile, gas is filled into the filter bag to assist filtering, so that the filtering efficiency of the filter bag is improved; and secondly, the filter bag can be turned over through the turning-over part, so that impurities on the filter bag can be conveniently cleaned, disassembly is reduced, the filtering efficiency is further improved, the maintenance cost is reduced, and the service life of equipment is guaranteed.

The utility model relates to the technical field of solution preparation devices, and discloses a copper sulfate solution preparation device which comprises a base, a barrel is fixedly connected to the middle of the base, a motor is fixedly connected to the bottom of the barrel, a rotating shaft is rotatably connected to the bottom of the barrel, and the bottom of the rotating shaft is fixedly connected to the output end of the motor. The other end of the rotating shaft is fixedly connected with fan blades, a barrel cover is arranged at the top of the barrel body, connecting blocks are fixedly connected to the opposite sides of the outer portion of the barrel body, positioning columns are rotatably connected to the interiors of the connecting blocks, limiting columns are fixedly connected to the exteriors of the positioning columns, and sliding columns are slidably connected to the exteriors of the positioning columns. According to the utility model, the rotating strip is driven by pulling the sliding column, so that the rotating strip is separated from the clamping block, and the cylinder body and the cylinder cover are quickly fixed and disassembled, so that the trouble of disassembling and assembling by workers is reduced.

The utility model relates to the technical field of photoelectric encoders, in particular to a wire outlet structure of a photoelectric encoder, which mainly comprises a wire outlet cavity arranged in a shell, a plug, a prepressing spring, a limit spring and an O-shaped ring arranged in the wire outlet cavity, an end cover mounted at an opening at the front end of the wire outlet cavity, a wiring hole arranged at the rear end of the wire outlet cavity, and a wire outlet arranged in the wiring hole. An internal cable of the photoelectric encoder penetrates through the wiring hole to be connected to the rear end of the plug, and the internal cable is sleeved with the pre-pressing spring; a plurality of limiting springs are arranged on the side face of the plug for elastic supporting, an external cable of the photoelectric encoder is connected with a socket matched with the plug, and electric conduction between the external cable and the internal cable is achieved through the plug and the socket. The wire outlet structure has the advantages of being good in sealing performance, high in shock resistance, easy to disassemble and the like, and the waterproof and dustproof performance of the encoder is improved when the wire outlet structure is applied to the encoder.

The invention relates to the technical field of flue gas detection sampling, in particular to a flue gas detection sampling device and method. Comprising a supporting frame which is fixedly installed on a discharge pipe and is of a U-shaped structure. A pipeline is fixedly installed between the two horizontal sections of the supporting frame, the left end of the pipeline fixedly penetrates into the discharging pipe, a sampling mechanism is arranged on the supporting frame, and a pre-drying mechanism is arranged below the supporting frame; according to the sampling mechanism, the sampling pipe is pushed to move into the exhaust pipe, so that the stability of the sampling pipe in the sampling process is guaranteed through mechanical control, the sampling accuracy is guaranteed, a filter cartridge can be quickly replaced through the filter part for sampling operation, and the flue gas sampling efficiency is improved.

The present invention provides a corrosion test box, which relates to the technical field of salt spray test machines. A corrosion test box includes a test box shell, and a salt spray nozzle and an air flow nozzle arranged inside the test box shell; a first valve body is fixedly installed in the test box shell, the first valve body is fixedly connected with a liquid delivery pipe, the liquid delivery pipe is connected with the inside of the salt spray nozzle, the first valve body is fixedly connected with a first liquid inlet pipe and a second liquid inlet pipe, the first liquid inlet pipe is used to receive salt water, and the second liquid inlet pipe is used to receive cleaning liquid; a second valve body is fixedly installed in the test box shell, the second valve body is fixedly connected with a first gas delivery pipe and a second gas delivery pipe, the first gas delivery pipe is connected with the inside of the air flow nozzle, the first gas delivery pipe is fixedly connected with an air inlet pipe, and the second gas delivery pipe is connected with the inside of the liquid delivery pipe. The present invention has the function of improving the cleaning efficiency of the corrosion test box by the operator.

The utility model relates to a disposable horse semen collection barrel inner membrane which comprises an inner container membrane, the inner container membrane is composed of a front-end membrane and a rear-end membrane, and a filtering piece is arranged at the overlapping position of the front-end membrane and the rear-end membrane. The filter part comprises a fastening ring attached to the inner wall of the rear-end membrane, an arc-shaped groove is formed in the outer side of the fastening ring, a clamping ring is arranged on the left side of the fastening ring, an insertion rod is fixedly connected to the right side of the clamping ring, and an insertion groove is formed in the position, corresponding to the insertion rod, of the left side of the fastening ring. According to the disposable horse semen collection barrel inner film, the processes of disassembly, assembly and cleaning can be omitted through the use of the disposable inner film, the consumption of the inner container is reduced, and the use efficiency of the inner container is improved. The disinfection process can be omitted by using a disinfected independently packaged disposable inner film. Only the inner membrane needs to be replaced when semen is collected in a breeding station for collecting multiple horses, other preparation links can be omitted, the preparation time of workers for collection work is effectively saved, and the breeding work efficiency is improved.

The invention relates to the technical field of concrete pole plugging, in particular to a concrete pole top plugging device which comprises a hoisting assembly and a top plugging assembly, the hoisting assembly comprises a mounting plate and a fixing plate arranged at the top end of the mounting plate, the mounting plate is used for being connected with a bottom plugging device, and the top end of the fixing plate is provided with a claw hook used for hoisting the plugging device; the plugging assembly is arranged at the bottom end of the mounting plate and connected with a top cover through a threaded rod, the bottom end of the top cover is connected with an elastic sleeve through a connecting piece, a spiral supporting piece is mounted in the elastic sleeve, and the spiral supporting piece can support expansion force generated by the elastic sleeve; according to the concrete pole plugging device, the spiral supporting piece is kept in a cylindrical shape so that the concrete pole can be conveniently wrapped in the later period, rapid hoisting and accurate positioning of the plugging assembly are achieved through the unmanned aerial vehicle or other hoisting equipment and the improved grapnel design, and the traditional tedious process of manually climbing the concrete pole for plugging is avoided.

The utility model discloses a pneumatic and manual switching device which comprises a piston rod, a support is fixedly installed outside the piston rod, a rotating handle is fixedly installed inside the support and located on the surface of the piston rod, a protective cover is fixedly installed outside the rotating handle, and a valve rod is movably installed inside the lower end of the piston rod. A nut positioning block is fixedly installed at the bottom of the support and located outside the valve rod, a trapezoidal nut is installed in the nut positioning block in a threaded mode, a shell is fixedly installed outside the nut positioning block, and a gear disc is movably installed at the bottom of the shell. Through the application of the rotary gear shaft, the gear disc, the nut positioning block and the trapezoidal nut, the operation stability of the internal structure of the pneumatic actuator can be effectively guaranteed, the balance of the internal valve rod in the vertical movement process can be guaranteed, the movement efficiency is higher, and in addition, the device is lighter in weight, smaller in size and more time-saving to disassemble and assemble.

The utility model discloses a kind of hydraulic pump structures of convenient piston dismounting, including cylinder body, the piston rod is placed in one side of cylinder body, the inner wall of one side of the piston rod surface is slidably connected with cylinder body, the outer cover plate is arranged in one side of cylinder body, the other side of piston rod is penetrated to the outside of outer cover plate and is slidably connected with outer cover plate, annular mounting groove is set up in the outer side position of one end of outer cover plate.The hydraulic pump structure of convenient piston dismounting, through the multiple clamping structure of design annular mounting plate and annular mounting groove, annular clamping plate and annular clamping groove and annular fixing plate and annular fixing groove, cooperate the thread connection of fixed bolt one and fixed bolt two, greatly simplify the installation and dismounting process between outer cover plate and cylinder body, also facilitate the dismounting of piston rod, this design not only reduces operation step, also reduces the risk of connecting component damage, to significantly improve the convenience of installation and dismounting.

The invention belongs to the technical field of hose design, and particularly relates to an integrated heat preservation metal hose. The device comprises a metal hose, a PT100 temperature measurement probe, a heat insulation adhesive tape for fixing the probe and a waterproof junction box, the PT100 temperature measurement probe is fixed at one end close to the metal hose through the heat insulation adhesive tape for fixing the probe, the PT100 temperature measurement probe is connected with the external waterproof junction box, and the waterproof junction box is connected with an external power supply and control system. The dismounting and mounting labor can be reduced, and the operation stability is improved.

The utility model belongs to refrigeration technical field, concretely provides a horizontal refrigerator. The horizontal refrigerator of current is not comfortable and laborsaving when starting the cabinet door. For this, the utility model provides a horizontal refrigerator, it includes the cabinet body and the cabinet door. Wherein the cabinet door is opened and closed the cabinet body in the way of up and down turnover, be provided with handle on the cabinet door, the handle is limited to finger groove, the top wall of finger groove extends downward to the front side of cabinet door, and at least one part of top wall is curved surface. The utility model solves above -mentioned technical problem.

The invention relates to the field of batteries, and discloses a modular power supply and distribution assembly for a desktop type film cutting machine, the modular power supply and distribution assembly comprises the desktop type film cutting machine, a storage battery lower cover and a storage battery upper cover, a host storage battery is arranged in a position between the storage battery lower cover and the storage battery upper cover, and the storage battery lower cover and the storage battery upper cover are welded through ultrasonic waves. A fixed box is arranged on one side of the storage battery lower cover, and a movable protection assembly convenient to adjust is arranged on the fixed box; through cooperation of the movable protection assemblies and the limiting assemblies, the extension blocks are driven to extend or contract in the direction of the fixing box, use of spring type buckles on the extension blocks is facilitated, meanwhile, the extension blocks are contained in the fixing box, the protection blocks on the two sides are in lap joint with the positioning grooves, the positioning grooves are closed, and the use safety of the fixing box is improved. Therefore, the extension block is protected, the protection of the spring type buckle on the extension block when the extension block is not used is facilitated, and the necessity of disassembly or replacement between the power distribution assembly and the cover body is reduced.

The utility model discloses a fine-tuning replaceable cutter holder, which comprises a fixed seat, a fixed bottom plate arranged at the bottom of the fixed seat and a cover plate arranged at the upper end of the fixed seat, a sliding cutter bar is arranged in the fixed seat, a replaceable cutter bar is arranged at the end part of the sliding cutter bar, the sliding cutter bar penetrates into the fixed seat and slides in the fixed seat, and the replaceable cutter bar is arranged at the upper end of the fixed seat. A pull rod is arranged at the left end of the fixed seat, a guide sleeve is arranged at the left end of the fixed seat, an adjusting nut in threaded connection with the guide sleeve is arranged on the guide sleeve, the pull rod penetrates through the guide sleeve and then is connected with the sliding cutter bar, a clamping groove is formed in the left end of the pull rod, and an annular protrusion matched with the clamping groove is arranged at the left end of the adjusting nut. The adjusting pull rod is rotated through the adjusting nut at the rear end to push the sliding cutter bar to move in the fixing base, the sliding cutter bar drives the replaceable cutter bar installed at the end to move so as to adjust the cutter, meanwhile, the replaceable cutter bar can be manufactured into different sizes and models according to different machining requirements, dismounting of a cutter body is reduced, and the working efficiency is improved.

The middle pier structure comprises middle pier gate grooves, the middle pier gate grooves are formed in the two sides of a middle pier, and gates are located between the middle pier gate grooves and side piers; the middle pier gate groove comprises a supporting assembly and a connecting assembly. One side of the connecting assembly is connected with the supporting assembly, the other side of the connecting assembly is connected with the middle pier, and the connecting assembly is located between the supporting assembly and the middle pier. Wherein the connecting assembly is fixedly connected with the supporting assembly; or the connecting assembly is detachably connected with the supporting assembly. According to the middle pier structure, through fixed connection or detachable connection of the connecting assembly and the supporting assembly, when the gate groove needs to be maintained or parts need to be replaced, dismounting and mounting can be conveniently conducted, 100% dismounting can be achieved after the gate groove is scrapped, waste is reduced, the concept of sustainable development is met, operation is convenient, and materials and cost are saved.

The utility model relates to the technical field of step induction, and disclose a kind of step induction mechanism for mould, including limiting mechanism and induction mechanism, the induction mechanism is located in the inside of limiting mechanism, the limiting mechanism includes fixed base, vertical shaft is rotatably connected in the inside of fixed base.The step induction mechanism for mould, with the advantages such as convenient dismounting, solve in mould production, step induction mechanism is important to control mould opening and closing, guarantee product quality.But existing mechanism has obvious defect: its structure is complex, many parts, rely on professional personnel and a variety of tools fine adjustment when assembling, time-consuming and labor-consuming;Operation is mainly automated, and it cannot meet the demand of artificial flexible adjustment in trial stage, leading to inefficient trial and high cost;When maintaining, a large number of associated parts need to be disassembled for replacing the wearing parts, which is not only troublesome but also easy to damage other components, and the tail material cannot be taken out in time, which often causes the production line to stop, seriously affecting the production progress and efficiency.

The utility model relates to the technical field of explosion-proof fans, in particular to a high-pressure aluminum alloy explosion-proof fan which comprises a bottom frame and an explosion-proof fan body, one end of the explosion-proof fan body is rotatably connected with the bottom frame through an end shaft, two symmetrical arc-shaped guide pieces are installed on the side, away from the end shaft, of the bottom frame, and the arc-shaped guide pieces are connected with the explosion-proof fan body. The two arc-shaped guiding pieces are located on the side face of the anti-explosion fan body, the circle centers of the arc-shaped guiding pieces are located on the end shaft, each arc-shaped guiding piece comprises an arc-shaped guiding part and a sliding part, the sliding parts are connected with the side wall of the anti-explosion fan body, and positioning holes distributed at equal intervals are formed in the outer sides of the arc-shaped guiding parts. According to the anti-explosion draught fan, through the cooperation of the bottom frame, the anti-explosion draught fan body, the arc-shaped guiding piece, the locking positioning piece and other structures, the purpose of conveniently and rapidly adjusting the angle of the draught fan is achieved.

The utility model relates to the technical field of scrap iron recycling, in particular to scrap iron and steel recycling and shearing equipment which comprises an equipment body, a first hydraulic cylinder is fixedly arranged at the top of the equipment body, the output end of the first hydraulic cylinder is in transmission connection with a first telescopic shaft, and an installation base is fixedly arranged at the bottom end of the first telescopic shaft. A T-shaped groove is formed in the mounting seat, limiting holes are symmetrically formed in the mounting seat, a positioning shaft is fixedly arranged in the T-shaped groove, a shearing tool is arranged in the T-shaped groove, a positioning hole is formed in one end of the shearing tool, circular sliding grooves are symmetrically formed in the shearing tool, and scrap iron on the two sides of the shearing tool is pressed through a pressing plate; the problem that scrap iron is prone to upwarp and splashing during shearing is avoided, meanwhile, the shearing tool can be rapidly disassembled and assembled through the plug pin and the positioning shaft, the problem that screws are rusted and difficult to disassemble after a long time is avoided, and when the abraded tool is replaced, a large amount of time can be saved, and the working efficiency can be improved.

The embodiment of the invention provides steel pipe welding equipment, a steel pipe welding system and a vertical shaft construction device. The steel pipe welding equipment comprises a supporting piece, a telescopic piece, an auxiliary supporting assembly, a welding assembly and a first control piece. The telescopic piece is arranged on the periphery of the supporting piece; the telescopic piece moves in the radial direction of the steel pipe; the auxiliary supporting assembly is arranged on the supporting face of the supporting piece. The auxiliary supporting assembly comprises an auxiliary supporting piece and an overturning piece. The overturning piece is arranged on the periphery of the auxiliary supporting piece; the auxiliary supporting piece is provided with an auxiliary supporting surface; the auxiliary supporting face extends in the radial direction of the steel pipe. The welding assembly is arranged on the auxiliary supporting surface; according to the steel pipe welding equipment, the welding efficiency of the steel pipe is improved, and the welding quality of the steel pipe is improved.

This invention belongs to the technical field of fast reactor installation, commissioning, operation, and routine maintenance, specifically relating to a local alarm device for a distributed sodium leak detector. A switch, power supply, alarm light, display screen, buzzer, and resistance display control meter are connected in series between two wires. The power supply and alarm light are grounded. After startup, tweezers at the end of the wires are used to clamp the two metal wires after the ceramic insulated terminal of the sodium leak detector to begin measurement. If a value is displayed, it indicates a short circuit in the sodium leak wire, and the location of the short circuit is determined. This invention quickly locates the fault point of the sodium leak wire, reducing the time and labor required for disassembling insulation during maintenance.

The present invention discloses a diesel engine cylinder state monitoring device, comprising a composite piston ring, a cylinder wall temperature sensor, a piston ring wear monitoring sensor, a cylinder liner wear monitoring sensor, a data acquisition module, a data processing module and a PC display module. The composite piston ring comprises a cast iron piston ring substrate and a non-magnetic material inlaid ring. The cylinder wall temperature sensor is respectively fixed in the upper ends of both sides of the cylinder liner, and the piston ring wear monitoring sensor and the cylinder liner wear monitoring sensor are respectively fixed on the middle of both sides of the cylinder liner. The cylinder wall temperature sensor signal, the piston ring wear monitoring sensor signal and the cylinder liner wear monitoring sensor signal are respectively input into the data acquisition module, and the data acquisition module and the data processing module process the data and transmit it to the PC display module for displaying the data. The present invention prolongs the maintenance cycle of the diesel engine, reduces unnecessary disassembly and assembly and the replacement frequency of parts and components, thereby reducing the operating cost of the diesel engine.

The utility model relates to the technical field of welding manipulators, and discloses a welding manipulator convenient for clamping a pipe fitting workpiece, which comprises a bottom plate, a turnover mechanism and an adjusting mechanism are arranged above the bottom plate, and the adjusting mechanism is positioned above the turnover mechanism; the turnover mechanism comprises a clamping part and a turnover part; and the overturning part is positioned on the outer side of the clamping part. Pipe fittings with different diameters can be clamped and fixed through the turnover mechanism and the clamping part, the use range of the welding manipulator for clamping pipe fitting workpieces is widened, the turnover part can conveniently turn over the clamping part, so that the pipe fittings can be turned over to different surfaces for welding, disassembly of the pipe fittings is reduced, and the welding efficiency is improved. The pipe fitting welding efficiency of the welding manipulator convenient for clamping the pipe fitting workpiece is improved; and through a fan, chippings and dust in the upper arc-shaped plate and the lower arc-shaped plate can be removed, the clamping stability of the pipe fitting is prevented from being affected, meanwhile, wind power generated by the fan blows the welding position of the pipe fitting, and the temperature of the surface of the pipe fitting is reduced.

This application relates to a polyurethane bushing mold disassembly device, belonging to the field of mechanical equipment technology. It includes a base, a clamping member for holding the mold, a pusher member below the clamping member for ejecting the bushing from the mold, a push rod above the base for ejecting the mold core, and a support assembly at the upper end of the base for supporting the push rod. This application has the effect of reducing the labor intensity of workers.

The utility model discloses a high-rotating-speed cylindrical roller bearing which comprises an outer ring, an inner ring is arranged on the inner side of the outer ring, a limiting ring groove is formed in the side, facing the outer ring, of the inner ring, and roller bodies arranged at equal intervals are arranged between the limiting ring groove and the interior of the outer ring in a rolling mode. An integrated retainer is arranged in a gap of the roller main body, and a retainer seat is clamped on the other side of the integrated retainer. The blind holes are formed in the two sides of the roller body to reduce the mass of a single roller so as to reduce the mass of the whole bearing, and the blind holes are used in cooperation with the fillet rivet holes and the fillet rivet heads, so that the integrated retainer and the retainer base are more convenient to disassemble and assemble, meanwhile, the rotating precision is improved, and the device has the advantages of reducing the overall mass and reducing the cost. Operation abrasion is reduced, the service life is prolonged, the retainer is more convenient to disassemble and assemble, and maintenance operation is facilitated.

The present invention relates to the field of rail transit technology, and discloses a vibration-damping prefabricated track structure with unloadable support and a construction method, wherein the structure includes a grouting layer, a vibration-damping cushion layer and a prefabricated track plate in order from bottom to top; the vibration-damping cushion layer is arranged between the prefabricated track plate and the grouting layer; the grouting layer is made of a self-compacting concrete material with good fluidity, and the grouting layer is used to support the prefabricated track structure; the vibration-damping cushion layer and the prefabricated track plate are composited into one body, and the vibration-damping cushion layer is arranged under the prefabricated track plate for vibration reduction; two prefabricated plate reserved guide grooves that can be engaged with wedge-shaped support blocks are provided on both sides of the prefabricated track plate, and before the grouting layer is formed, the wedge-shaped support block is used to support the vibration-damping cushion layer and the prefabricated track plate, and after the grouting layer is formed, the wedge-shaped support block is unloaded internally, and the support of the wedge-shaped support block to the vibration-damping cushion layer and the prefabricated track plate is cancelled, so as to achieve contact between the vibration-damping cushion layer and the grouting layer. The vibration-damping prefabricated track structure of the present invention has a good vibration reduction effect.