1360results about How to "Improve the limit effect" patented technology

The invention discloses a welding tool for production of an automobile seat framework. The welding tool for production of the automobile seat framework comprises a base (1), a feed clamping device, two side section clamping devices and a supporting bar clamping device, wherein the feed clamping device is provided with a sleeve (14) in advance and pushes the sleeve to the position above a slope (50) of the bottom section of a U-shaped bent pipe (2) in the automobile seat framework, the two side section clamping devices are used for fixedly clamping two side sections of the U-shaped bent pipe (2), and the supporting bar clamping device is used for fixedly clamping a first supporting bar (3) and a second supporting bar (4) so that the two ends of the first supporting bar (3) and the two ends of the second supporting bar (4) can be in fixed lap joint to the two side sections of the U-shaped bent pipe (2) correspondingly. By the adoption of the structure, the U-shaped bent pipe, the first supporting bar and the second supporting bar can be fixedly clamped, and therefore the welding tool for production of the automobile seat framework can guarantee fixed clamping of the U-shaped bent pipe and the welding precision and the product consistency of the first supporting bar and the second supporting bar during automatic welding.

The invention provides a self-resetting friction pendulum three-dimensional seismic mitigation and isolation support. A concave blind hole is formed in the center of a lower support plate (4); a seismic reduction layer (7) and vertical seismic reduction springs (8) are arranged on the bottom of the concave blind hole; upper parts of the vertical seismic reduction springs (8) are connected to a spherical surface slide plate (3); a hinge slide block (2) is arranged on the top of the spherical surface slide plate (3); an upper spherical surface of the hinge slide block (2) is positioned in a slide block accommodation chamber (12) under an upper support plate (1); a counter-force plate (6) is arranged on the periphery of the upper part of the lower support plate (4); and horizontal seismic reduction springs (5) are positioned between the counter-force plate (6) and an outer peripheral wall of the slide block accommodation chamber (12). The self-resetting friction pendulum three-dimensionalseismic mitigation and isolation support is of a circular structure; the horizontal seismic reduction springs and the vertical seismic reduction layer can improve the durability and the seismic isolation performance of the friction pendulum seismic mitigation and isolation support; and the horizontal seismic reduction springs can fully play the energy-dissipating capacity of the counter-force plate, and can achieve three-dimensional seismic mitigation and isolation of the support under the action of extreme loads such as earthquakes and typhoon.

The invention provides a steel pipe inner and outer wall cleaning machine, and belongs to the technical field of building materials. The steel pipe inner and outer wall cleaning machine comprises a cleaning machine base, a feeding and conveying component, an outer wall cleaning component, a centering and guiding component, a discharging and conveying component and an inner wall cleaning component.The feeding and conveying component, the outer wall cleaning component, the centering and guiding component, the discharging and conveying component and the inner wall cleaning component are all arranged on the cleaning machine base and are arranged from left to right in sequence. According to the steel pipe inner and outer wall cleaning machine, the outer wall of a steel pipe is firstly cleaned,then the inner wall of the steel pipe is cleaned with the cleaned outer wall of the steel pipe as the standard, the cleaning effect of the inner wall of the steel pipe is especially good, and use ofa subsequent formed pipeline is convenient; and dust, rust blocks and other impurities on the inner wall and the outer wall of the steel pipe are effectively removed in a physical manner, and liquid in the subsequent formed pipeline cannot be contaminated.

The invention relates to a digital TV communication antenna capable of accurately lifting and searching signals, comprising a base plate, the lower end of which is installed on a precision lifting device, four pillars are arranged symmetrically on the outside of the upper surface of the base plate, and the upper ends of the four pillars are installed with Ring slide rail, the four pillars play the role of evenly supporting the ring slide rail, a rotating steel ring is installed on the ring slide rail through sliding fit, and an inner gear ring is arranged on the inner wall of the rotating steel ring, and the inner gear ring is respectively connected with four The transmission mechanisms are connected, and the four transmission mechanisms are symmetrically installed on the upper end surface of the base plate. The present invention can realize the function of digital motor antenna to precisely lift and adjust the search signal and automatically adjust the signal receiving inclination without manual operation, and has the functions of automatically adjusting the search height of the signal, high precision of lifting adjustment, automatic adjustment of the signal receiving inclination, high precision of the receiving inclination, and signal search It has the advantages of good effect, simple operation and high work efficiency.

The invention belongs to the technical field of machining, and particularly discloses a stamping device with a polishing function. The stamping device comprises a workbench, an annular press block, amounting base and a power mechanism. The mounting base is provided with a punch and push rods, a through hole is formed in the workbench, a fixed cylinder is arranged in the workbench, a spiral grooveis formed in the inner wall of the fixed cylinder, the fixed cylinder is in sliding connection with a push column, and the push column is provided with an upper clamping rod. Concave cavities are formed in the sidewall of the upper portion of the push column, the interiors of the concave cavities are in sliding connection with polishing bulges, and first springs are connected between the polishing bulges and the concave cavities. A cavity is formed in the annular press block, the interior of the cavity is in sliding connection with a piston, and a second spring is connected between the pistonand the annular press block. The sidewall of the lower portion of the annular press block is provided with filter bags and air suction pipes, the sidewall of the upper portion of the annular press block is connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is provided with a first one-way valve, and the air outlet pipe is provided with a second one-way valve. By using thedevice, the inner wall punched out of the through hole can be polished after punching, and the processing efficiency is improved.

The invention belongs to the field of manufacturing machines and devices of woven cloth and particularly relates to the field of cloth winders, in particular to an improved type cloth winder. The improved type cloth winder comprises a machine frame. A cloth feeding device and a winding device are arranged on the machine frame. The two ends of the winding device are respectively provided with a width adjusting device. Each width adjusting device comprises an adjusting frame. A stop block is arranged on each adjusting frame. The bottom of each stop block extends to the upper portion between a first winding wheel and a second winding wheel of the winding device. By the adoption of the improved type cloth winder, the width adjusting devices are arranged on the winder, it is guaranteed that the distances between the width adjusting devices and the cloth are identical, the cloth is prevented from deviating in the process of winding, the tidiness and the quality of winding of the cloth are guaranteed, the phenomenon that the cloth is wound multiple times is avoided, and the production efficiency is greatly improved.

The invention discloses a new-energy-automobile charging device. The new-energy-automobile charging device comprises a pile seat and a plug connected with an electric automobile. A protruding part is integrally arranged at the top end of the pile seat, a first sliding chute extending left and right is formed in the pile seat, and a gear groove is formed in the position, located at the left end of the first sliding chute, in the pile seat; and a turbine groove extending upwards into the protruding part is further formed in the pile seat, a baffle groove transversely penetrating left and right and communicating with the turbine groove is formed in the protruding part, and a baffle plate is arranged in the baffle groove in a left-right sliding mode. According to the new-energy-automobile charging device, the whole structure is simple, power supply is safe and reliable, and operational manipulation is simple and convenient; electric shock accidents caused by plug inserting and pulling are effectively reduced, the life safety of people is ensured, and sudden break-off of electric automobile charging caused by accidental-kicking of the people can be avoided; and the service life of an accumulator in the electric automobile is effectively prolonged, energy saving and environmental protection are achieved, and the new-energy-automobile charging device is suitable for being popularized and used.

The invention discloses an anti-seismic base used for a bridge. The anti-seismic base used for the bridge comprises a supporting seat. A supporting board is fixedly connected to the bottom of the supporting seat. The two sides at the bottom of the supporting board are movably connected with movable rods. The bottom ends of the movable rods are movably connected with sliding blocks. The bottoms ofthe sliding blocks are in sliding connection with a sliding board. The bottoms of the sliding blocks penetrate through the sliding board and extend into the sliding board. The sides, extending into the sliding board, of the sliding blocks are in sliding connection with the bottom of the inner wall of the sliding board. The invention relates to the technical field of bridge seismic resistance. By the adoption of the anti-seismic base used for the bridge and an anti-seismic method of the anti-seismic base, a push rod is fixedly connected with the side, located in the sliding board, of each sliding block, shakes generated in the vehicle traveling process and an earthquake are reduced, the stability and safety of a bridge floor are guaranteed, an anti-seismic effect is improved, sleeves are fixedly connected to the positions, located on the opposite sides of vertical rods, on the two sides of the bottom of the supporting board, multiple seismic reduction is achieved, an anti-seismic effectis better, the bridge floor is more stable, and the service life of the bridge is prolonged.

The invention discloses a simple heavy stuff carrying and feeding trolley and belongs to the field of carrying tools. The simple heavy stuff carrying and feeding trolley comprises a base, universal casters, a support, a feeding support, a sliding support, a supporting device, a manual winch, a pulley set and a hoisting hook, wherein the universal casters are arranged on the base, the support and the base are fixed into a whole, the feeding support is arranged on the top of the support, the sliding support is arranged inside the feeding support, the supporting device is arranged in the front of the feeding support, the manual winch is fixed to the back portion of the sliding support, and the pulley set and the hoisting hook are installed in the front of the sliding support. The pulley set comprises a fixed pulley and a movable pulley, a steel wire rope is led from the manual winch, sequentially winds around the fixed pulley and the movable pulley and then is fixed to the sliding support or a fixed pulley support; a fixed supporting plate is installed at the back of the base, and a movable supporting plate is installed in the front of the base. According to the simple heavy stuff carrying and feeding trolley, the functions of heavy stuff hoisting, transferring and machine tool feeding are achieved through a simple structure, and the labor intensity of workers is alleviated; meanwhile, the simple heavy stuff carrying and feeding trolley is simple in structure, convenient to operate, low in cost and high in safety and meets the use requirements of small and medium size enterprises.

The invention belongs to the technical field that the whole section is cut simultaneously by one rotary drill, and particularly discloses a hob mounting structure of a shield tunneling machine. The hob mounting structure of the shield tunneling machine comprises bolts, a hob, a tool apron and a hob shaft used for fixing the hob, and further comprises wedge blocks, wherein threaded holes matched with the bolts are formed in the tool apron; grooves for accommodating the hob shaft and the wedge blocks are further formed in the tool apron; a cross section of the hob shaft is wedge-shaped; through holes are formed in the wedge blocks; the diameter of a bolt head of each bolt is larger than the diameter of each through hole, and the outer diameter of a screw of each bolt is smaller than the diameter of each through hole. Besides, the hob mounting structure further comprises stop blocks fixed on the wedge blocks, sealing plugs are further arranged on the tool apron, and pull rings are arranged on the sealing plugs. Compared with a traditional hob mounting structure of the shield tunneling machine, the hob mounting structure of the shield tunneling machine adopts a newly added design of the wedge blocks, the stability of the hob shaft is greatly improved under the locking action of the bolts on the wedge blocks, and the problem that the hob is likely to fall off is effectively solved.

The invention discloses a shockproof bridge base and relates to the technical field of shock resistance of bridges. The shockproof bridge base includes a supporting base, a supporting plate is fixedlyconnected to the bottom of the supporting base, and movable rods are movably connected to both sides of the bottom of the supporting plate; a sliding block is movably connected to the bottom of eachmovable rod, a sliding board is slidingly connected to the bottom of each sliding block, the bottom of each sliding block penetrates through the corresponding sliding board and extends into the sliding board, and the side, extending into the corresponding sliding board, of each sliding block is slidingly connected to the bottom of the inner wall of the sliding board. According to the shockproof bridge base and a shockproof method thereof, a pushing rod positioned on one side of each sliding block is fixedly connected to the interior of the corresponding sliding board, vibration during runningof a vehicle and an earthquake is reduced, the stability and safety of a bridge surface are guaranteed, and the damping effect is improved; by fixedly connecting sleeves on both sides of the bottom ofthe supporting plate and between the opposite sides of vertical rods, multi-damping is achieved, the damping effect is better, the bridge surface is more stable, and the service life of the bridge isprolonged.

The invention provides a flexible folding display device, which comprises a flexible display screen, a hinge component for bending the flexible display in at least one bendable area, and a stress buffer structure which is used for buffering stress on the edge of the bendable area of the flexible display screen, wherein the flexible display screen is provided with the at least one bendable area; the hinge component is arranged on the edge of the bendable area of the flexible display screen; the stress buffer structure is arranged in the bendable area of the flexible display screen; the stress buffer structure comprises an elastic buffer part and a hard limiting part; the elastic buffer part is arranged in a mode of clinging to the edge of the flexible display screen and is used for conducting elasticity deformation under the stress on the edge of the flexible display screen; and the hard limiting part is arranged at the outer side of the elastic buffer part and is used for limiting theelastic buffer part. According to the flexible folding display device provided by the invention, a problem that components become invalid due to stress concentration of the flexible display screen onthe edge of the bendable area can be relieved.

The invention provides a compressor pump body, a compressor and an assembly method of the compressor pump body and relates to the technical field of compressors. According to the main technical scheme, the compressor pump body comprises an air cylinder, a piston, a sliding block and a limiting structure, wherein the piston is mounted in the air cylinder, and the periphery of the piston comprises a first plane; the sliding block is mounted between the first plane of the piston and the inner surface of the air cylinder; the periphery of the sliding block comprises a second plane and a second cambered surface, wherein the second plane and the first plane are in sliding fit, and the second cambered surface and the inner surface of the air cylinder are adaptive; and the limiting structure is connected with the sliding block and used for limiting the sliding block to enable a gap to exist between the sliding block and the inner surface of the air cylinder. The compressor pump body is mainly used for reducing friction power consumption between the sliding block and the air cylinder in the compressor pump body, and promoting the performance of the compressor.

The invention belongs to the field of building part production and particularly discloses a production line for a concrete prefabricated piece. The production line comprises a mould pretreatment station, a material distribution station, a mould combination station and a demoulding station. The mould combination station is used for stacking and combining moulds after material distribution is completed, connecting portions are arranged at the bottoms and on the upper portions of the moulds, and the vertically-arranged moulds are fixed through the connecting portions. An independent curing space is formed between the vertically-arranged moulds, and the prefabricated piece is cured in the curing space. According to the production line for the concrete prefabricated piece, a curing kiln or other curing rooms are not needed in the curing link, only the moulds are conveyed to stock dump after being stacked and combined, and demoulding can be conducted after curing is conducted for a certain time; the technological process is simplified, a stacking frame or other supports are not needed in the curing process, and production efficiency is improved while production cost is reduced; and meanwhile, due to the fact that the curing kiln and the like does not need to be used, cost is reduced, energy consumption is lowered, maintenance cost of facilities is reduced, and the occupied area of the whole technological production line is greatly reduced.

The invention discloses an environment-friendly device for sorting garbage by manipulators. The environment-friendly device comprises a device body, a conveying table board and a mechanical arm. The conveying table board is movably connected to the middle part of the device body. The left side and the right side of the device body are movably connected with the mechanical arms. A power box is fixedly connected to the rear surface of the device body. Sliding rails are fixedly connected with the middle parts of spacing baffles. The manipulators are used for sorting in a moving manner, so that garbage is sorted more conveniently and quickly by the manipulators; movable baffles facilitate dismounting of the mechanical arms, the mounting is convenient, the spacing effect is realized, and the mechanical arms are prevented from being derailed; the manipulators are mounted and dismounted by screw mounting holes, so that the practicability of the device body is improved; two different types ofgarbage can be sorted by the device body by a second manipulator, so that resources are saved, and the sorting time is shortened; and waste gas and odor generated by garbage are purified by a waste gas purifying device, so that the environment-friendly performance of the device body is improved.

The invention aims to provide a cable laying device for electric power engineering construction and a use method thereof. The cable laying device comprises a cable rack and a tractor; the tractor comprises a driving wheel and a driven wheel, a belt is wound between the driving wheel and the driven wheel, a gear is fixed in the axis direction of the driving wheel, an adjusting base is fixed at thebottom of the gear, a mounting base is arranged below the adjusting base, at least four retractable rods are hinged between the adjusting base and the mounting base, an adjusting rod is hinged to oneretractable rod, a horizontally-arranged screw rod is rotationally connected into the mounting base, the end, away from the retracting rods, of the adjusting rod is in threaded connection with the screw rod, a driving mechanism for automatically driving the screw rod to rotate is fixedly mounted at the end part of the screw rod, and the driving wheel is slidably connected to the mounting base. According to the cable laying device for electric power engineering construction and the use method thereof, the problem that when cables are laid in a pipeline, due to improper traction control, the belt is prone to looseness is solved. The device has the effects of automatically adjusting the belt when the belt is loosened, reducing the conditions of belt deviation and failure and improving the construction efficiency.

The invention relates to a suspension cushion of a gearbox. The suspension cushion comprises an upper plywood, a lower plywood and a rubber body clamped between the upper plywood and the lower plywood, wherein, the upper plywood is positioned in a plate body in a bracket of a vehicle body and is in an avoidance state with the components of the bracket of the vehicle body; the bracket is arranged over the upper plywood; the upper end face of the bracket is matched with a mounting surface of the gearbox while the lower plywood is abutted on a lower bottom plate of the bracket of the vehicle body, and the face of the lower bottom plate is matched with the mounting surface of the vehicle body. The arrangement of the bracket on the upper plywood can ensure buffering and vibration damping to a great extent and reduce the deflection of the suspension cushion; meanwhile, the avoidance of the upper plywood positioned in the plate body in the bracket of the vehicle body with the components of the bracket can prevent the upper plywood from clashing with the bracket of the vehicle body, thus ensuring the good effect of limiting.

The invention provides an intelligent aluminum alloy section machining equipment which comprises an equipment body, a cutting and clamping device, a push air cylinder, an intelligent control device, an adjustable locating and limiting frame structure, a guide roller, a conveying belt, a finished product storage device and a transmission motor; the cutting and clamping device is welded on the leftside of the middle upper part of the equipment body; the push air cylinder is arranged on the right side of the middle upper part of the equipment body by bolts; and the intelligent control device isarranged at the upper part of the push air cylinder by bolts. With the arrangement of a proximity transducer on a limiting plate, a PLC, the transmission motor, a lifting air cylinder, a cutting motorand a transmission belt, the intelligence degree is improved advantageously; a grinding wheel is welded on an output shaft on the inner side of a grinding motor, so that the two ends of an aluminum alloy pipe after cutting can be ground advantageously and conveniently, and then the grinding effect of the tail end of the aluminum alloy pipe is improved; and scales are marked in the adjustable rack, so that the cutting length of the aluminum alloy pipe can be adjusted more precisely.

This invention is hinge device, which includes fixing element, rotating element and pivot rotating assembly. The rotating element and fixing element are connected through pivot rotating assembly. The rotating element is arranged with lateral plate, on which has deformed hole. The fixing element has the seat, on which has pivot hole and spacing groove. The spacing groove is adjacent to the pivot hole and communicated to one side of pivot hole. The pivot rotating assembly is composed of pivot, elastic element and locking element. The pivot is arranged with deformed shaft part matching the deformed hole of rotating element and the spacing element. The pivot passes through the lateral plate deformed hole of rotating element and seat pivot hole of fixing element. The locking element is fixed on one end of pivot. The elastic element, which generates torsion force when rotating element rotates relative to fixing element, is covered on pivot and clamped between rotating element and fixing element. The spacing element, which limits rotating element to rotate between first and second limiting positions, is set in the said spacing groove. This invention has good spacing effect and stability.

The invention discloses a luggage carrier with a desk stool function, and belongs to the field of trip object carrying tools. The luggage carrier with the desk stool function provided by the invention is characterized in that a table comprises a desktop, sliding blocks and a cushion block, wherein the cushion block is fixedly connected with the back surface of the desktop, the sliding blocks are symmetrically arranged on the two sides of the desktop, and the sliding blocks are in sliding fit with the two sides of an inserting groove arranged on the box body; the stool comprises a stool surface, stool legs, a supporting plate, a rotating shaft, connecting blocks, gears, racks and universal rolling wheels, wherein one side of the stool surface is connected in articulated connection with the supporting plate, and the back surface of the stool surface is fixedly connected with the connecting blocks; the connecting blocks are connected with the stool legs through the rotating shaft, the stool legs are fixedly connected with the rotating shaft, the two ends of the rotating shaft are respectively fixedly connected with the gears, the racks are in slip connection with the stool surface, the gears and the racks are meshed, and the racks are fixedly connected with the universal rolling wheels. The main application of the luggage carrier provided by the invention has the advantages that the functions of the desk and a stool are simultaneously realized, the stools are solely stressed, the desk and the stool are simple and convenient to fold and unfold, the occupation space is small, and the weight is light.

The invention discloses a continuous conveying double-face air drying device for eel roasting. The continuous conveying double-face air drying device comprises a conveying device, an air blowing device, an air drying bin and a filtering device; the conveying device is used for feeding eels needing to be subjected to air drying into the air dying bin, and hot air blown out from the air blowing device conducts air drying treatment on the eels in the air drying bin after being filtered by the filtering device; the air drying bin comprises an air purifying and filtering bin and an air drying mainbin; the filtering device is arranged in the air purifying and filtering bin and comprises a feeding roller, a filter felt and a winding roller; and the air drying main bin is internally provided witha gear ring, a planet gear, a center shaft and a connection rod, the planet gear is provided with a protrusion, and the protrusion can rotate into guide grooves of a four-corner rotation piece and drive the four-corner rotation piece to do angular motion. The invention further discloses an eel air drying method. The continuous conveying double-face air drying device for eel roasting and the eel air drying method have the advantages that feeding is conducted, the air drying continuity is high, automatic turning over can be achieved, and the air drying cleanliness is high.

The invention provides a household appliance and a door assembly thereof. The door assembly comprises a door plate and a door handle, wherein a handle groove used for containing the door handle is formed in the door plate, the door handle is arranged at the handle groove, is matched with the shape of the handle groove and can move back and forth relative to the door plate so as to extend out of orretract into the handle groove. According to the door assembly, the handle groove is formed in the door plate, the door handle is movably arranged at the handle groove, the door handle can retract into the handle groove when not being used, so that the effect of hiding the door handle is achieved, the whole door board is smooth, attractive and elegant, and the attractiveness of the product is improved; meanwhile, the phenomenon that a user can be easily scratched due to the fact that the two ends of certain door handles are protruded in the prior art is also avoided, and the use experience ofthe user is improved; and when the door handle needs to be used, the door handle can extend out of the handle groove so as to protrude out of the surface of the door plate, it is guaranteed that theuser can hold the door handle by hand to carry out door opening, door closing and the like, so that the corresponding functions of the door handle is realized.

The invention relates to the technical field of sludge treatment, and particularly relates to an anti-blocking aeration head. The anti-blocking aeration head comprises a cylinder body, a piston and areset spring, wherein the piston is arranged in the cylinder body and divides the cylinder body into a cavity A and a cavity B, the cavity A communicates with an air inlet hole of the cylinder body, and the reset spring is arranged in the cavity B; the anti-blocking aeration head further comprises a piston rod arranged in the cavity B, wherein a mounting hole used for installing the piston rod isformed in one end, opposite to the air inlet hole, of the cylinder body, one end of the piston rod is connected with the piston, and the other end of the piston rod penetrates through the mounting hole; and a blind hole channel is formed from one end of the piston to the other end of the piston rod, wherein the open end of the blind hole channel is located at one end where the cavity A is located,exhaust holes communicating with the blind hole channel are formed in the piston rod, and the exhaust holes are located in the mounting hole of the cylinder body. According to the anti-blocking aeration head, sludge can be effectively prevented from entering the exhaust holes, so that the aeration head is prevented from being blocked.

The invention belongs to the field of solar panels and particularly relates to a solar panel deployment limiting mechanism. The solar panel deployment limiting mechanism comprises a rotating shaft, afixed hinge and a moving hinge. One side of the fixed hinge and one side of the moving hinge are provided with shaft holes respectively, and the rotating shaft penetrates the shaft holes in one side of the fixed hinge and the shaft holes in one side of the moving hinge to be connected with the fixed hinge and the moving hinge. Torsional springs sleeve the rotating shaft, a torsional spring arm atone end of each torsional spring is connected with the moving hinge while a torsional spring arm at the other end of each torsional spring is a free end, each free end is abutted against the fixed hinge after the moving hinge rotates around the rotating shaft to expand, and the fixed hinge and the moving hinge are provided with limiting bosses for limiting after deployment. The solar panel deployment limiting mechanism is easy in assembly, low in component quantity, simple in structure, light in weight, small in size and high in reliability.

A filter sealing plate continuous punch forming die and a feed mechanism are characterized in that the filter sealing plate continuous punch forming die comprises an upper die plate and die feet, a fixing plate is arranged at the lower portion of the upper die plate, a stripping ring base plate is arranged at the lower portion of the fixing plate, a stripping ring plate is arranged at the lower portion of the stripping ring base plate, a circular ring cutting upper die, a stretching upper die, a primary die pressing upper die, a secondary die pressing upper die, a punching upper die, a hole flanging upper die and a die stripping block are sequentially arranged among the fixing plate, the stripping ring base plate and the stripping ring plate and below the upper die plate, a lower die plate is arranged on the die feet, a female die base plate is arranged on the lower die plate, a female die plate is arranged on the female die base plate, coil stock is arranged between the female die plate and the stripping ring plate, a circular ring cutting lower die, a stretching lower die, a primary die pressing lower die, a secondary die pressing lower die, a punching lower die and a hole flanging lower die are sequentially arranged between the female die base plate of the lower die plate and the female die plate of the lower die plate, stripping holes are formed in the position, corresponding to the die stripping block, of the female die plate, the position, corresponding to the die stripping block, of the female die base plate and the position, corresponding to the die stripping block, of the lower die plate respectively, and a workpiece formed through die pressing is stripped through the stripping holes.

The invention discloses an artificial fish reef in a steel-frame structure and aims to overcome the defects that an existing artificial fish reef is single in shape and function and low in economical benefit, is easy to block if being used in sea for a period of time, is adverse to gathered life of a fish school, and the artificial fish reef under the sea is relatively poor in stability and easy to swing to affect life of the fish school. The artificial fish reef in the steel-frame structure disclosed by the invention comprises an algae culture matrix and a fish reef matrix, wherein the lower end of the fish reef matrix is fixedly connected with a steel rack and the algae culture matrix is connected with an impact ball for impacting the fish reef matrix; high pressure gas for flushing a fish sheltering cavity is arranged on the fish reef matrix; the impact ball triggers a resilient mechanism to cut a gas cover, so that high pressure gas escapes to flush the fish sheltering cavity so as to prevent the fish sheltering cavity from being blocked. The artificial fish reef not only can provide a place for the fish school to inhabit, reproduce and shelter enemies, but also can be used for cultivating algae, so that the artificial fish reef is high in economical benefit. The artificial fish reef put in use is good in stability, and the fish sheltering cavity in the fish reef matrix is hardly blocked.

The invention discloses a fire-fighting elevating mechanism with good stabilizing effect, which comprises a base, the upper end of the base is symmetrically provided with a lifting device, the upper end of the elevating device is fixedly connected with a connecting plate, and the upper end of the connecting plate is provided with There are buffer grooves, and the opposite inner walls of the two buffer grooves are fixedly connected with first limiting blocks, and the opposite end side walls of the two first limiting blocks are provided with first sliding grooves, and the two A placement plate is slidably connected between the first sliding slots, the upper end of the placement plate is provided with a placement slot, the bottom of the placement plate is symmetrically provided with two limiting grooves, and the bottom of the buffer slot is symmetrically provided with two The hollow rods are provided with hollow cavities inside the two hollow rods, and the first springs are provided in the two hollow cavities. The invention has reasonable structural design, simple operation, not only good stability, but also good cushioning effect.

The invention discloses a rotator cuff balloon. The rotator cuff balloon comprises a limiting structure and a protection structure connected to the limiting structure. The limiting structure has an arc along the coronal plane. The prosthesis conforms to the physiological structure of the shoulder joint of the human body, is limited to the subacromial space, and can reduce adverse events such as foreign body sensation, dislocation and functional failure of a patient. The prosthesis conforms to the physiological structure of the shoulder joint of the human body, is limited to the subacromial space, and can reduce adverse events such as foreign body sensation, dislocation and functional failure of a patient.

The invention relates to a multistage variable-frequency variable-friction pendulum vibration isolation support. The multistage variable-frequency variable-friction pendulum vibration isolation support comprises an upper connecting seat plate, wherein a lower connecting seat plate arranged below the upper connecting seat plate, an upper sliding block and a lower sliding block; the upper slide block is in spherical contact with the lower slide block, the lower surface of the upper connecting seat plate is provided with an upper friction layer, the upper surface of the lower connecting seat plate is provided with a lower friction layer, the upper surface of the upper slide block is in spherical contact with the lower surface of the upper connecting seat plate, and the lower surface of the lower slide block is in spherical contact with the upper surface of the lower connecting seat plate. The lower surface of the upper connecting seat plate is a spherical concave surface, the upper surface of the upper sliding block is a spherical convex surface, and the spherical concave surface of the upper connecting seat plate is adapted to the spherical convex surface of the upper sliding block;and the upper surface of the lower connecting seat plate is a spherical concave surface, the lower surface of the lower sliding block is a spherical convex surface, and the spherical concave surface of the lower connecting seat plate is adapted to the spherical convex surface of the lower sliding block. The multistage variable-frequency variable-friction pendulum vibration isolation support has self-adaptability of rigidity and damping and stronger re-centring ability. The multistage variable-frequency variable-friction pendulum vibration isolation support belongs to the technical field of vibration isolation.

The invention relates to an eccentric locking pin for an electrophoresis sledge. The eccentric locking pin comprises a base plate, an elastic limiting device, a rotating shaft, a rotating shifting block, an eccentric hook pin, a hook pin unscrewing-state height limiting plate, a hook pin screwing-state height limiting plate and an eccentric pin height position guide rod, wherein the elastic limiting device is arranged on the upper end surface of the base plate, and the hook pin unscrewing-state height limiting plate and the hook pin screwing-state height limiting plate are arranged on the lower end surface of the base plate; the rotating shaft passes through the base plate, and the eccentric pin height position guide rod is butted under the hook pin unscrewing-state height limiting plate; when the rotating shifting block is stirred and the eccentric hook pin is unscrewed, the eccentric pin height position guide rod is butted above the hook pin screwing-state height limiting plate. A car body can be stably fixed on the electrophoresis sledge by the eccentric locking pin. Whatever state the car body is adjusted to, the eccentric locking pin can keep a stable locking state.