1355results 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 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 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 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 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 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.