63results about How to "Avoid easy shedding" patented technology

The invention discloses an adjustable device for fixing and easily replacing a silica gel bar, which comprises a first fixed seat and a second fixed seat respectively positioned at two ends, wherein the first fixed seat and the second fixed seat are respectively fixed on respective adhesive patches; adhesive layers are arranged at the bottoms of the adhesive patches; a connecting strip is arranged on the first fixed seat; a plurality of clamping holes are formed in the connecting strip; clamping columns are arranged on the second fixed seat; the clamping columns can be clamped into the clamping holes. The adjustable device has the benefits that as the first fixed seat and the second fixed seat can be fixed on the two sides of the silica gel bar on a wound or a scar of a patient through respective adhesive layers; the clamping columns are clamped into the corresponding clamping holes of the connecting strip, so that the first fixed seat is connected with the second fixed seat and skin on two sides of the wound can be stitched without tension; as to the scar treatment, the silica gel bar covering the scar is fixed and compressed so as to prevent the silica gel bar from falling off, the curative effect is enhanced, and the silica gel bar covering the scar can be replaced conveniently at the same time. The adjustable device is suitable for wounds and scars with different sizes.

The invention discloses a nylon winding machine with a tension adjusting function, and relates to the field of textile machinery. The nylon winding machine comprises a base; a stand column is arrangedon one side of the top of the base; a power mechanism is arranged in the stand column, and is provided with a winding shaft; a tension adjusting mechanism is arranged at the top of the base, and is positioned below the winding shaft; the tension adjusting mechanism comprises a fixed block; a linear motor is arranged at the top of the fixed block; a pull wire ring is arranged on a slide block at the top of the linear motor; an adjusting box is arranged on the front surface of the fixed block; a through groove communicating with an inner cavity of the adjusting box is formed in the front surface of the adjusting box; and slide rails are slidingly mounted on the two sides of the inner wall of the adjusting box. The nylon wire winding tension is adjusted through the tension adjusting mechanism to prevent the condition of rupture of nylon wires caused by higher tension in the nylon wire winding process or easy fall due to loose winding caused by lower tension.

The invention discloses a sizing material for improving the stripping performance and construction applicability of an S-CLF YC type coiled material. The sizing material obtained by compounding asphalt, an oil product, SBS, butyl rubber, SBR, lignin, tackifying resin and stone powder in a specific range can overcome the defect that the stripping strength of the coiled material and post-cast concrete does not meet the requirement. And the S-CLF YC type waterproof coiled material is smooth in appearance, the phenomena of sand surface and yellowing of the coiled material under a high-temperature condition are not easily caused, and meanwhile, it is ensured that other properties meet the standard requirements. The performance of the coiled material is improved, and the market competitiveness of the product is improved.

The invention provides a connection device facilitating plugging of an inner cone cable. The connection device comprises a force bearing ring, a pressing terminal, a connection conductor and a contact ring provided with a chain touch finger. One end of the pressing terminal is in confining pressure connection with a conductor core, and the other end of the pressing terminal is in threaded connection with a contact ring. The force bearing ring is sleeved on the conductor core in confining pressure connection with the pressing terminal and is connected with the head portion of the cable. The connection conductor is sleeved on the outer portion of the pressing terminal and butts against the force bearing ring and the contact ring. The invention also provides a connection method of the connection device and the inner cone cable. The connection method is characterized in that one end of the pressing terminal is pressed onto the conductor core in the peripheral direction in a confining pressure way, the force bearing ring and the connection conductor are sequentially sleeved in from the other end of the pressing terminal, and finally the contact ring of the chain touch finger is made to be in threaded connection with the other end of the pressing terminal. The connection device and the connection method can improve the stability and convenience of plugging connection between the inner core cable and a metal conductor of an inner cone socket, and accordingly achieve good electrical performance and through-current capability of the electric equipment.

The invention relates to a production and processing device for an aluminum-plastic panel of a fireproof building curtain wall material. The production and processing device comprises a conveying device, a film feeding device, an edge pressing device and a film covering device. The production and processing device can solve the following problems that in the process of covering the surface of the aluminum-plastic panel by existing film covering equipment: a, the existing film covering equipment does not limit and fix the aluminum-plastic panel in the conveying process of the aluminum-plastic panel, so that the aluminum-plastic panel is prone to sliding in the film covering process, a plastic film and the aluminum-plastic panel cannot be aligned, the film covering effect is reduced, and the production quality of the aluminum-plastic panel is influenced; and b, the existing film covering equipment cannot cover the aluminum-plastic panels in different thicknesses with films, and the edge warping or stripping is prone to occur on the aluminum-plastic panel after film covering, so that in the subsequent installation or transportation process of the plate after film covering, scratches are prone to occur on the surface of the plate, and the appearance quality of the aluminum-plastic panel is reduced.

The invention relates to the technical field of textile yarn manufacturing, in particular to a textile yarn fixed-length winding and rotating machine, and fixed-length winding of textile yarn is completed through cooperation of a bottom plate, a side plate, a length control device, a guide device, a winding device and a cutting device. According to the spinning yarn fixed-length winding and rotating machine, the problems that in the manual length fixing process, spinning yarn is manually measured firstly and then wound, so that the spinning yarn manufacturing efficiency is low, and existing spinning yarn manufacturing equipment usually measures the number of turns of wound spinning yarn in a mode of calculating the number of turns of rotation of a winding drum, so that the spinning yarn manufacturing efficiency is low can be solved. And the problems that the fixed length of the spinning yarn is not accurate and the like are easily caused by the fact that the outer diameter of the spinning yarn is gradually increased after the spinning yarn is wound by the winding drum and the tightness degree of the spinning yarn during winding are solved.

The invention discloses a multi-station residual current test connection device co-used with residual current protective circuit breakers and circuit breaker detectors. The connection device is characterized by comprising a faceplate, a middle plate, a bottom plate and a plurality of station components, which are arranged from top to bottom in sequence, wherein each station component comprises a relay base, relays and a plurality of electricity conducting pillars; the relay base is arranged on the middle plate; the relays are arranged on the relay base; the electricity conducting pillars pass through the faceplate and the middle plate and are arranged corresponding to inlet and outlet ports of the residual current protective circuit breakers one to one; and power lines of the circuit breaker detectors are correspondingly connected with the electricity conducting pillars by the relays one to one. The connection device has the advantages that adopting the electricity conducting pillars instead of open mouth clamps in the prior art, the connection device not only has a simple structure and strong operability and is safe and reliable but also has the effects of saving time and effectively reducing the labor cost.

The invention discloses a multi-layer composite building insulation board and a preparation method thereof, and belongs to the technical field of insulation boards, the outer layer of the insulation board is provided with a polymer mortar layer, an extruded sheet layer and an outer decorative sheet layer which are in grouting embedded connection, and the bottom end part of the polymer mortar layerextends into the extruded sheet layer and the outer decorative sheet layer; reinforcing steel bar reinforcing pieces are arranged in the upper grouting cavity and the lower grouting cavity to be matched with multiple glass microsphere bags, so that on one hand, the properties of heat insulation, sound insulation, corrosion prevention and the like of the outer layer of the insulation board are effectively enhanced, and on the other hand, the mechanical strength of connection between every two of the polymer mortar layer, the extruded sheet layer and the outer decorative sheet layer is effectively improved; the phenomenon that the outer layer of the heat preservation plate is prone to falling off in the long-term use process is effectively avoided to a certain extent, meanwhile, the inner base plate layer aerogel layer is arranged on the inner side of the heat preservation plate, the aerogel layer is made of a porous and disordered low-density aerogel material of a nano-scale continuousnetwork structure, and the heat insulation effect of the heat preservation plate can be better enhanced.

The invention discloses a blended textile, which is formed by weaving yarns, wherein the yarns comprise wool yarns and rabbit wool yarns; the rabbit wool yarns are formed by blending 60 to 98 percent of rabbit hair and 2 to 40 percent of chemical fibers; and the wool yarns and the rabbit wool yarns are mutually twisted and woven. By the method, the quality of the textile is improved, the comfortableness of the textile is improved, the crease resistance is high, the moist heat adjusting capacity is high, a phenomenon that wool easily falls off is avoided, the warm keeping degree is kept, the whole weight of the textile is reduced, the water absorbability is reduced, and the textile is convenient to clean, prevents mites from breeding and has environment protecting and body building functions.

The invention relates to an automatic leveler with a rapid cooling function and a position-adjustable roller. The leveler comprises a body, the movable roller and an air cylinder, wherein a servo motor is arranged above the main body, a screw penetrates through the main body, and a screw sleeve is arranged on the right side of the servo motor; the servo motor is in threaded connection with the screw sleeve, a gear is installed on the right side of the screw sleeve, and a dust shielding cover is arranged on the periphery of the gear; a nut penetrates through the side face of the dust shieldingcover, a handle is arranged on the outer surface of the dust shielding cover, the handle and the dust shielding cover are fastened through the nut, and a nut column penetrates through the outer surface of the dust shielding cover. The automatic leveler has the advantages that the rapid cooling function is achieved, and the position of the roller can be adjusted; the movable roller is arranged so that the movable roller on the leveler can be flexibly adjusted, a large plate can be smoothly placed in the leveler and corrected, the application range of the leveler is enlarged, and the applicationrange is wider.

The invention discloses an auxiliary tool for fixing and repairing teeth and a use method, the auxiliary tool comprises a dental handpiece and a guide plate, the dental handpiece comprises a handle and a machine needle arranged on the handle, one end of the handle is provided with a handpiece, the handpiece is provided with a plurality of positioning points, and the machine needle is located among the plurality of positioning points; the guide plate comprises a plate body, a notch formed in the plate body and a plurality of guide rails located on the periphery of the notch. According to the auxiliary tool for fixing and repairing the teeth and the use method, through an accurate guide rail control mode, a common positioning path is closer to be parallel, the friction force between the false tooth and the abutment is increased, the condition that the fixed false tooth is easy to fall off is effectively avoided, and for preparation of the abutment, a shoulder can be clearer, uniform in thickness and consistent in height; meanwhile, through the cooperation of the guide plate and the dental implanter, the dental implant operation can be completed, and the dental implant is better in applicability.

The invention provides a facing brick veneering splicing structure and a construction method thereof. The splicing structure is used for splicing a veneering of a facing brick and a laying face of a building. The splicing structure comprises first cement mortar strips and second cement mortar strips, wherein the first cement mortar strips coat the veneering of the facing brick in the first direction, and the second cement mortar strips coat the laying face in the second direction; the veneering of the facing brick presses the laying face, and the first cement mortar strips and the second cement mortar strips are staggered and combined into the latticed splicing structure. Therefore, by forming the latticed cement mortar splicing layer between the veneering of the facing brick and the laying face of the building, transmitting of stress is stopped through the structure of the staggered cement mortar strips and the space defined by the spliced cement mortar strips, and the stability of the splicing layer of the facing brick is improved. The technical problem that a cement mortar splicing layer of an existing facing brick is easily peeled off after external force is applied to the cement mortar splicing layer is solved.

The invention provides a connection device facilitating plugging of an inner cone cable. The connection device comprises a force bearing ring, a pressing terminal, a connection conductor and a contact ring provided with a chain touch finger. One end of the pressing terminal is in confining pressure connection with a conductor core, and the other end of the pressing terminal is in threaded connection with a contact ring. The force bearing ring is sleeved on the conductor core in confining pressure connection with the pressing terminal and is connected with the head portion of the cable. The connection conductor is sleeved on the outer portion of the pressing terminal and butts against the force bearing ring and the contact ring. The invention also provides a connection method of the connection device and the inner cone cable. The connection method is characterized in that one end of the pressing terminal is pressed onto the conductor core in the peripheral direction in a confining pressure way, the force bearing ring and the connection conductor are sequentially sleeved in from the other end of the pressing terminal, and finally the contact ring of the chain touch finger is made to be in threaded connection with the other end of the pressing terminal. The connection device and the connection method can improve the stability and convenience of plugging connection between the inner core cable and a metal conductor of an inner cone socket, and accordingly achieve good electrical performance and through-current capability of the electric equipment.

The invention discloses a textile structure material with stab-resistant performance, and belongs to the technical field of textiles. According to the weaving process of the textile structure material, the textile structure material is woven from bottom to top according to a coil structure diagram; the textile structure material is formed by mutually connecting a plurality of scale structure units; each scale structure unit comprises a connecting part and a scale main body part, the middle upper part of each scale main body part is of a rectangular structure, and the lower part of each scale main body part is of an arc-shaped structure; and each connecting part is divided into transverse connection and longitudinal connection, and the transverse connection and the longitudinal connection are conducted in a yarn looping mode. The invention solves the problems that the existing plane structure stab-resistant fabric is too much in texture point exposure and the whole fabric is hard after enhancement treatment and is not suitable for wearing, and improves the phenomena that scales of tower lap joint type stab-resistant equipment are easy to fall off and stab-resistant holes are easy to form, so that the stab-resistant performance and wearing flexibility of the fabric are improved, and the weight and the number of overlapped layers of the stab-resistant fabric are effectively reduced.

The invention provides a charger suspension box. The front side and two sides of a supporting plate for placing rechargeable batteries are respectively connected with a baffle plate, and the rear side of the supporting plate is connected with a suspension baseboard for suspension use. When the charger suspension box is in use, a battery which is being charged can be placed in the supporting plate, and the suspension baseboard is suspended below a recharge socket. Thus, the rechargeable battery can be stably placed near the socket to be safety charged, and the phenomenon that a power line is pulled and intertwined and the battery is easy to fall off is avoided.

The invention provides an electronic probe device for auscultation sphygmomanometer. The electronic probe device comprises an auscultation head and a soft pipe. The auscultation head comprises a lowercover, an upper cover, and a vibration membrane. A conical cavity is arranged in the lower cover. An electret capacitor microphone is arranged in the conical cavity and is connected to two leads. Theleads are arranged between the auscultation head and the soft pipe and are injection-moulded in the inner wall of the soft pipe. One end of the soft pipe is connected to the leads, the other end is provided with a connection head, and two wiring terminals that are respectively connected to the leads are arranged in the connection head. Through the connection head, the electronic probe device is connected to a sphygmomanometer; the leads and the soft pipe are integrated through injection moulding, the auscultation head and the soft pipe are integrated through injection moulding, namely, the auscultation head and the soft pipe are integrally connected to the sphygmomanometer, the connection is reliable, and solved is the problem that because the leads are individual, the auscultation head of a conventional sphygmomanometer is easy to fall.

The invention discloses a method for positioning a defective part of a part. The method comprises the following steps: acquiring an element appearance electronic map of the part with the defective part; receiving an instruction, and forming a mark at a preset position on the element appearance electronic map according to the instruction; and transmitting the element appearance electronic map with the bad mark to a preset terminal. With the adoption of the method, the element appearance electronic picture of the part with the bad part is obtained and then is electronically marked, so that a maintainer can quickly confirm the bad position of the part according to the mark on the element appearance electronic picture for maintenance. By means of the method, the situation that in the prior art, an arrow sticker is prone to falling off in the part transportation process can be avoided, or the sticker is relatively large. The invention further provides an electronic device, terminal equipment and a storage medium.

The invention relates to the technical field of pruning, and discloses a convenient and labor-saving branch pruning and cutting device which comprises a connecting rod, a telescopic device and a spring rod, wherein the telescopic device is arranged at the bottom of the connecting rod, the bottom of the spring rod is fixedly connected with the top wall surface of the connecting rod, and a supporting device, a cutting device, a fixing device, a clamping device and a supporting device are sequentially arranged outside the connecting rod from bottom to top. According to the convenient and labor-saving branch pruning and cutting device, due to the fact that a limiting clamping plate is fixedly connected with the connecting rod, the connecting rod also extends upwards, when the connecting rod extends to a proper height, a grip is waved, due to the fact that the spring rod has certain elasticity, when the grip is waved forwards, the grip is still located at the rear end, and when a blade cuts a branch, both force applied by a worker and inertia exist, so that the force for cutting the branch, of the blade is larger than the force applied by the worker, and the effect of improving the branch cutting efficiency is achieved.

The invention relates to portable aluminum welding equipment with a debris processing function. The portable aluminum welding equipment comprises a main body, a welding box, a horizontal plate, dust collectors and sliding rods. Support rods are installed below the left and right sides of the main body, and the main body and the support rods are fastened by nuts. A cover plate is mounted on the upper part of the main body, a hydraulic rod is mounted on the inner wall of the bottom of the main body, and a fixed shaft is welded under the hydraulic rod. A roller is arranged on the inner wall of the fixed shaft, the roller is internally provided with a movable shaft in a penetrating mode, a connecting rod is welded to the right side of the movable shaft, a cylinder is mounted above the connecting rod, and the cylinder and the connecting rod are fastened by a nut. The portable aluminum welding equipment has the beneficial effects that the portable aluminum welding equipment with the debris processing function is provided with the movable shaft, so that the welding equipment is more convenient and simple in the process of welding, the welding range is wider, the fixation is firmer, and the cumbersome process of requiring workers to move items is further avoided.

The invention provides a magnetic resonance compatible water cooling microwave ablation needle, which comprises a zirconium oxide needle head, a titanium alloy needle pipe, a coaxial cable, a water inlet pipe, a water outlet pipe, a water tank, a radio frequency coaxial connector and a needle handle, wherein the coaxial cable is inserted into the titanium alloy needle pipe; the front end of the coaxial cable is inserted into the zirconium oxide needle head; the tail end of the zirconium oxide needle head is inserted into the front end of the titanium alloy needle pipe to be bonded and fixed with the front end of the titanium alloy needle pipe; the water inlet pipe is inserted into the titanium alloy needle pipe; the water tank sleeves the tail end of the titanium alloy needle pipe; UV glueis used for bonding and fixation; the water outlet pipe is inserted into the water tank; the UV glue is used for bonding and fixing the end port of the water tank onto the coaxial cable, the water inlet pipe and the water outlet pipe; water sealing is performed; the radio frequency coaxial connector is welded with the tail end of the coaxial cable; the needle handle covers the water tank and theradio frequency coaxial connector.

The invention discloses an independent suspension frame of a boosting vehicle, which comprises a frame body, a bottom fork, an engine and a cradle which are assembled into a whole, wherein the engine is fixed on the bottom fork, the frame body is articulated with the bottom fork, and the cradle is fixedly connected below the bottom fork. In the whole structure, vibration generated in the running process of the engine can not be directly transferred on the frame body so as to greatly reduce the vibrating sense of the frame body, improve the driving comfort level of a user, prevent the frame body from breaking in the process of long-term vibration and a drive chain of the engine from falling off and effectively improve the use performance of the boosting vehicle.

The invention discloses a sandwich thermal insulation concrete outer wallboard with a steel beam, steel diagonal bracings and an outer wallboard body being prefabricated simultaneously and an installation method of the sandwich thermal insulation concrete outer wallboard. The sandwich thermal insulation concrete outer wallboard comprises the outer wallboard body, the steel beam and the steel diagonal bracings. The outer wallboard body is rectangular. Connection tables are arranged at the four corners of the outer wallboard body. The steel diagonal bracings are arranged in the outer wallboard body in an intersecting mode. The four ends of the steel diagonal bracings are arranged at the connection tables. The steel beam is arranged at the top of the outer wallboard body. According to the sandwich thermal insulation concrete outer wallboard and the installation method thereof, the cold bridge phenomenon of the steel beam and the steel diagonal bracings is avoided, the problem that sealing of the bottom of the steel beam and the bottoms of the steel diagonal bracings is not compact is solved, the phenomenon that cracks are prone to being generated when masonry is conducted on the bottom of the steel beam and parts of the steel diagonal bracings is avoided, the phenomenon that when plastering is conducted on a masonry wall or an extruded polystyrene board is bonded to the masonry wall, mortar or the extruded polystyrene board is likely to fall off is avoided, wall hoisting is conducted through the steel beam, and the steel structure installation speed is increased while the hoisting problem of the wall is solved; and in addition, the field installation construction speed of the outer wallboard body is higher than that of traditional masonry, on-site wet construction is reduced, the environment is protected, and on-site civilized construction is facilitated.

The invention relates to an energy-saving oral cavity protection device. The device is characterized in that: it includes a grab handle, a connecting pipe, a fixed plate and a brush head, the grab handle is internally equipped with a switch and a control apparatus, and the switch and the control apparatus are in line connection; the top of the connecting pipe is equipped with the fixed plate, andthe fixed plate is fixedly connected to the top of the connecting pipe; the fixed plate and the brush head are in plug connection; the connecting pipe is internally equipped with a vibration rod, thebottom end of the vibration rod extends into the grab handle and is in line connection with the control apparatus, and the top of the vibration rod is connected to the brush head. The environment-friendly toothbrush provided by the invention is a three-section structure including the grab handle, the brush handle and the brush head, the brush handle is a telescopic structure, the back side of thebrush handle is equipped with bristle, and can clean tongue fur or other oral parts. The energy-saving oral cavity protection device provided by the invention has a reasonable structure, and is practical and environment-friendly.

The invention provides a multi-mode satellite antenna holder control device, and the comprises an antenna holder; a device box body is installed on the side face of the antenna holder, a bayonet socket is embedded into the inner side of the device box body, a rubber strip is embedded into the inner side of the bayonet socket, and a transmission mechanism capable of automatically limiting a plug is arranged on the inner side of the bayonet socket. The transmission mechanism comprises a lever frame, a sliding frame, a swing frame, a track, a rotating shaft, a sealing frame, a baffle and a telescopic rod; the rotating disc drives the extension ring to swing horizontally when swinging, the protruding block drives the limiting frame to swing integrally through the tooth piece, the limiting frame can swing with the penetrating shaft as the center, and the limiting frame drives the limiting block to limit and fix the two ends of the plug when swinging; therefore, the plug can be automatically limited when the plug is embedded into the control device, the situation that the plug is prone to falling off after being used for a long time is avoided, and the situation that dust enters the interior of the bayonet socket through a gap between the plug and the bayonet socket can be integrally avoided through the limiting frame.

The invention relates to the technical field of metal plating equipment, and discloses a conveniently controlled metal plating fixing device which comprises a shell, wherein a soft magnetic block is slidably connected in the shell, a sliding block is movably connected to the top end of the soft magnetic block, a first connecting rod is fixedly connected in the sliding block, a first gear is meshedwith the outer side of the first connecting rod, a magnetic pole is arranged in the middle of the first gear, a rack is meshed with the outer side of the first gear, and a first connecting shaft is fixedly connected with the middle of the rack. According to the conveniently controlled metal plating fixing device, through connection of the shell and the rack, the problem that an existing metal plating device is not provided with a high-efficiency fixing device is solved, a workpiece needing metal plating is fixed effectively, and the metal plating fixing device is applicable to different specifications and sizes, so that metal workpieces with different sizes can be fixed when the metal parts are placed in an electrolytic tank, the use is convenient, and therefore, the conveniently controlled metal plating fixing device is convenient to use, high in flexibility and applicability.

The invention discloses a thermos bottle body production device. A base and a forming base are included, and the forming base is installed at the upper end of the base; the forming base and the base are fixedly connected due to welding; by improving an installing and fixing manner between four hoisting rings and a top base, the manner that traditional hoisting rings are directly fixed to a top base through welding is improved into the manner that the hoisting rings are fixed to the top base through a new added reinforcing connection manner; the four hoisting rings are divided into two groups,and every two of the hoisting rings are fixedly installed on the top base through two reinforcing connection devices; through the reinforcing connection devices, the hoisting rings are fixed to the top base; in this way, the hoisting rings are fixed more firmly than a welding manner, and the situation that when the hoisting rings are used for a too long time or borne weight is too large, the hoisting rings fall on the top base is prevented; in this way, the top base can be connected with an external device more stably through the hoisting rings, and therefore the efficiency of injection molding of the device and the stability of work of the device are improved.

The invention discloses a blended textile. The blended textile is formed by weaving of yarns, wherein the yarns include wool yarns and rabbit hair yarns, rabbit hair yarns are formed by blending of 60-98% of rabbit hair and 2-40% of chemical fibers, and weaving of the yarns refers to paired twisting type weaving of the wool yarns and the rabbit hair yarns. The blended textile has the advantages of salubrity, environmental protection, improvement in quality and comfort, excellent anti-crease performance, high damp-heat regulation capability, high warming degree, lower overall weight, lower water absorbability, convenience in cleaning and capabilities of avoiding wool of shedding easily and preventing mite breeding.

The invention provides a relay assembly for an LED lam. According to the invention, a transmission mechanism comprises protruding blocks, sliding block, a sliding rails, a connecting rod, a lever frame, a swing arm and an extrusion frame, wherein the sliding block slides on the inner side of a base; the protruding block is arranged at one end of the sliding block; the sliding rails are embedded into the two inner sides of the sliding block; the connecting rod swings on the two sides of the lower end of the sliding block; the lever frame is installed in the base; the swing arm swings at one end of the lever frame; the extrusion frame is arranged on the inner side of the swing arm; the protruding blocks are distributed on the two sides of a plug; grooves are formed in the sliding blocks; the sliding rails are arranged on the two sides of the sliding rail grooves; the connecting rod, the lever frame and the swing arm are combined to form a triangular shape; the connecting rod is hollow, the connecting rod and the swing arm are arranged in a matched mode; the protruding blocks drive the sliding block to slide on the inner side of the base due to extrusion; the sliding block drives the connecting rod to swing when sliding; the connecting rod swings with the lever frame as a fulcrum; meanwhile, the connecting rod drives the swing arm to swing through the lever frame; the swing arm drives the extrusion frame to swing when swinging; and the extrusion frame swings to penetrate through the inner side of the lever frame.