89results about How to "Slide up and down smoothly" patented technology

The invention provides package printing equipment which comprises a workbench, a feeding mechanism, a discharging mechanism, a sensor, stand columns, a printing machine seat, a printing machine, an inking device and a controller. The two sides of the workbench are each provided with two corresponding stand columns, and the four stand columns are arranged in a quadrangle shape. The printing machine seat is arranged on the four stand columns in a sliding and sleeving manner, and the printing machine is fixed below the printing machine seat, right faces the workbench and comprises a printing body and a soft printing plate. A supporting plate is arranged at the tops of the stand columns and located above the printing machine seat, an air cylinder is arranged on the supporting plate, and the output end of the air cylinder is connected with the printing machine seat. The inking device is arranged on a boss on the side faces of the stand columns and comprises an ink box, an inking pipe, a solenoid valve, an inking brush and a second drive mechanism. The feeding mechanism, the discharging mechanism, the sensor, the air cylinder, the second drive mechanism and the solenoid valve are connected with the controller. The package printing equipment is simple in structure, practical and reliable in work, the mechanisms are controlled by the controller for coordination work, and automatic printing is achieved.

The invention discloses a compound gantry milling machine which comprises a machine body and a working table, wherein a guide rail is arranged on the machine body; the working table is arranged on the guide rail and slides along the guide rail; framework-type vertical column structures are arranged on both sides of the machine body; a cross beam frame is arranged between the two vertical columns;a sliding seat is suspended on the cross beam frame; a milling and boring head capable of stretching longitudinally is arranged in the sliding seat; the vertical columns have hollow framework-type structures; guide rails are arranged on two sides, relative to the inner side surface, of each framework; a sliding saddle is arranged between the two sides of each framework; two sides of the sliding saddle are connected with the four guide rails arranged on the two sides of each framework in a sliding way; a ram is arranged in the sliding saddle; and a main shaft with a horizontal milling head is arranged in the ram. By the compound gantry milling machine, as the four guide rails arranged on the two vertical columns are used for supporting the weight of the sliding saddles and the rams, the positioning precision, the coaxiality and the whole rigidity of lateral machining of the compound gantry milling machine are improved; meanwhile, the milling and boring head arranged on the cross beam frame can machine the upper side of the side faces of a part, so the lateral machining precision is improved.

Provided is a signing device for released fishes. The device includes a linkage assembly, a bottom plate, a signing gun assembly and a fish body fixing assembly, wherein the linkage assembly includes a pressing rod, a central supporting shaft, a supporting part and a second external spring; the supporting part is installed on the bottom plate, the central supporting shaft is installed on the supporting part, and the pressing rod body is hinged to the central supporting shaft; the fish body fixing assembly is composed of an air-operated pulling part and a fish body clamping part, the air-operated pulling part and the signing gun assembly are installed on the both ends of the pressing rod respectively, the fish body clamping par connected to the air-operated pulling part is installed on the bottom plate, and the fish body clamping part is positioned below the signing gun assembly; the both ends of the second external spring are installed on the pressing rod and the supporting part respectively. According to a signing method for the released fishes, the device is adopted for binding signboards on the released fishes. The signing device and method for the released fishes have the advantages of improving precision of binding the signboards, reducing falling rates of the signboards inside the bound fish bodies, decreasing damage caused on human and fishes by misoperation and the like, and belong to the field of experimental tools for aquatic products.

The invention discloses an assembled building material transporting vehicle for construction site, Including bottom plate, the upper surface of the bottom plate is fixedly connected with the lower surface of the box body, A low surface of that inner wall of the box body is fixedly connecte with two fixing plates, The output shaft of the motor is fixedly connected with the bottom end of the liftingdevice, the top end of the lifting device is fixedly connected with the lower surface of the support plate, and the lower surface of the support plate is fixedly connected with the lower surface of the inner wall of the box body through two telescopic devices. The site is equipped with an assembled building material transporter, Through the mutual cooperation between the bottom plate, the box body, the motor, the threaded column, the threaded cylinder, the telescopic rod, the spring, the second slider, the second sliding groove, the first splint, the connecting plate, the electric push rod, the hinge, the cover plate and the handle, the assembled building material is conveniently taken out by the worker, thereby bringing convenience to the work of the worker and reducing the work intensity of the worker.

The invention discloses a plastic particle packing device. A containing groove is formed in the upper surface of a base. A supporting plate is arranged in the containing groove in an up-down sliding mode. A supporting spring is arranged in the containing groove. One end of the supporting spring is connected with the supporting plate, and the other end of the supporting spring is connected with the bottom face of the containing groove. A feeding barrel is arranged over the supporting plate, and an opening of the end of the feeding barrel is right opposite to the supporting plate. A baffle is made of magnetic metal and arranged on the opening of the end of the feeding barrel in a sliding mode. A fixing plate is fixedly arranged on the periphery face of the feeding barrel. A driving spring is arranged between the fixing plate and the baffle, so that the baffle is away from the fixing plate, and seals the opening of the end of the feeding barrel. An electromagnet is arranged on the side, close to the baffle, of the fixing plate and right opposite to the baffle. A power supply device is connected with the electromagnet through a cable. A slide rheostat is connected to the cable and located in the containing groove, and the sliding part of the slide rheostat makes contact with the bottom face of the supporting plate. According to the plastic particle packing device, overweight of plastic particles in a container can be avoided.

The invention provides a cloth cutting device and belongs to the technical field of clothes production. The cloth cutting device comprises a cutting mechanism, a discharging mechanism and a cloth pressing mechanism, an X-direction screw and an X-direction screw nut of the cutting mechanism are in threaded connection, a Y-direction screw nut and a Y-direction screw are in threaded connection, a cloth cutter is mounted at the lower end of a Z-direction support, a first pressing wheel component and a second pressing wheel component are mounted on two sides of the cloth cutter, a discharging discof the discharging mechanism is positioned below a discharging hole of a cutting supporting platform, a discharging air valve is connected with the discharging disc, and the cloth pressing mechanism comprises four cloth pressing components which are mounted at four cornerss of the cutting supporting platform respectively. The cloth cutting device can realize accurate cutting of cloth and automaticdischarging of clothes greige cloth after cutting and is reasonable and compact in structure and high in production efficiency.

The invention discloses a reamer. The reamer comprises an outer cylinder, a blade mechanism, a transmission shaft mechanism and a reset mechanism, wherein the transmission shaft mechanism is arranged in the outer cylinder and axially slides along the outer cylinder, and the reset mechanism is used for resetting the transmission shaft mechanism; a first sealing structure matched and sealed with the outer wall of the transmission shaft mechanism is arranged at the upper end of the outer cylinder, a blade groove is formed in the lower end of the outer cylinder, a second sealing structure is arranged at the end part of the outer cylinder, and the blade mechanism is arranged in the blade groove; and an expander for driving the blade mechanism to expand outwards is arranged on the transmission shaft mechanism, and the inner cavity of the transmission shaft mechanism is communicated with the blade groove. The reamer has contractility and cannot be limited by the wall thickness of a tool body, the reaming size is large, and meanwhile, the sealing structure is reasonable; and in the drilling process, the drilling fluid hardly enters key components of the reamer in the processes of expansion and contraction of a reaming blade, and the flexibility of the blade cannot be influenced.

The invention discloses a dust remover, which comprises a housing and an electrical connection terminal mated with the housing, a sliding chamber is arranged in the housing, and the right side of the sliding chamber is connected to the outside of the housing by a plug-in connection. A spacer fixedly connected with the housing is provided above the insertion hole, and a counterbore opened upward is provided in the spacer, the left side of the counterbore is connected to the sliding cavity, and the right side is connected to the sliding cavity. The outer part of the housing and the lower part are connected to the insertion hole, the top end of the left side of the sliding chamber is provided with a first electrical connection chamber, and the bottom end of the sliding chamber is provided with a downwardly expanding cover The overall structure of the present invention is simple, the production cost is low, the power supply is safe and reliable, and the operation is simple and convenient. The occurrence of power failure accidents of the dust collector is suitable for promotion and use.

The invention discloses an LED display screen with the dust removal function. The LED display screen comprises a base, the upper surface of the base is fixedly connected with the bottom of a first support rod, the top of the first support rod is fixedly connected with the lower surface of the body of a motor, the output shaft of the motor is fixedly connected with a take-up reel, the outer surfaceof the take-up reel is fixedly connected with the lower surface of a movable plate, two telescopic rods are arranged on the upper surface of the base, and tops of the telescopic rods are fixedly connected with the lower surface of the movable plate. The LED display screen has the advantages that the operation of a control panel makes the motor to rotate reversely when dust cloth moves to the lower surface of an LED display screen body, dust on the surface of the LED surface display screen is erased through the dust cloth lapped with the LED display screen body, the dust on the surface of theLED display screen body is mechanically erased by reciprocating actions, labor is saved, and the erasing efficiency is improved.

The invention discloses a mouse profiling machine which can realize automatic production of mousse with high production efficiency, high processing precision and simple debugging. The mouse profiling machine a workbench and a carriage which are connected to a machine frame respectively through a transverse guide rod and a longitudinal guide rod, and are respectively connected to two track wheels and arc-shaped hobs; and a hob rack is provided with two pinch rollers and a limit switch respectively corresponding to a mouse blank piece and the workbench.

The invention relates to the technical field of seedling culture, and particularly discloses a Luolong radix codonopsis seedling culture device which comprises a culture barrel, a seedling culture potand a liquid storage barrel. A first spring is arranged at the bottom of the culture barrel. The seedling culture pot is placed on the first spring. A through hole is formed in the bottom of the seedling culture pot and internally provided with a water absorption line. A liquid inlet is formed in the side wall of the culture barrel. A liquid outlet is formed in the liquid storage barrel. A liquidsupply pipe is communicated between the liquid inlet and the liquid outlet. A liquid baffle is hinged to the liquid inlet. A first rack is arranged on the seedling culture pot and meshed with a gear.The gear is meshed with a second rack. A vertical rod is connected with the bottom of the second rack and connected with a supporting rod. The supporting rod is fixed into the liquid storage barrel.A plurality of rotating blades are arranged on the vertical rod. A first supporting rod is hinged to a ball head of the bottom of the vertical rod. A second supporting rod capable of pushing the liquid baffle is hinged to the first supporting rod. By means of the technical scheme, the supply of clear water and a nutrient solution is controlled through the weight of the seedling culture pot, and the problems that supply is not timely and the seedling survival rate is reduced in the prior art are avoided.

A compound gantry machine tool comprises a body (1) and a worktable (2). A guide rail (3) is arranged on the body (1). The worktable (2) is arranged on the guide rail (3) and slides along the guide rail (3). Two sides of the body (1) are each provided with a frame-shaped column structure (4). A beam support (5) is arranged between two columns (4). A slide seat (7) is hung on the beam support (5). A vertically telescopic boring and milling head (6) is arranged in the slide seat (7). The column (4) is of a hollow frame-shaped structure. Two sides of opposite inner side surfaces on two sides of the frame are each provided with a guide rail (41). A slide saddle (8) is arranged between the two sides of the frame. Two sides of the slide saddle (8) are slidably connected to four guide rails (2) disposed on the two sides of the frame. A ram (9) is mounted in the slide saddle (8). A spindle (10) having a horizontal milling head is arranged in the ram (9). In the compound gantry milling machine, the four guide rails (2) arranged on the two columns are used to bear the weight of the slide saddle and the ram, so as to improve the positioning accuracy, the concentricity, and the overall rigidity of side machining of the compound gantry milling machine. Meanwhile, the boring and milling head arranged on the beam support can perform machining above a side surface of a component, thereby improving the accuracy of side machining.

The invention relates to a magnetic levitation barrier gate comprising a first vertical column, a second vertical column and a transverse rod. The first vertical column and the second vertical columnare vertically arranged and mutually parallel; the two ends of the transverse rod are arranged on the first vertical column and the second vertical column correspondingly and can slide up and down along the first vertical column and the second vertical column; a first magnetic piece and a second magnetic piece are arranged at the two ends of the transverse rod; a first electromagnet is arranged onthe upper portion of the first vertical column, and a second electromagnet is arranged on the lower portion of the first vertical column; a third electromagnet is arranged on the upper portion of thesecond vertical column, and a fourth electromagnet is arranged on the lower portion of the second vertical column; and the transverse rod slides upwards along the first vertical column and the secondvertical column through attraction of the first magnetic piece and the first electromagnet, repulsion of the first magnetic piece and the second electromagnet, attraction of the second magnetic pieceand the third electromagnet and repulsion of the second magnetic piece and the fourth electromagnet, and slides downwards along the first vertical column and the second vertical column through repulsion of the first magnetic piece and the first electromagnet, attraction of the first magnetic piece and the second electromagnet, repulsion of the second magnetic piece and the third electromagnet andattraction of the second magnetic piece and the fourth electromagnet. According to the magnetic levitation barrier gate, up and down displacement of the transverse rod of the barrier gate can be achieved through electromagnetic control, and the situation that a vehicle collides the rod is effectively avoided.

The invention discloses a mine repair auxiliary fixing mechanism, which includes a mine repair vehicle. The top of the mine repair vehicle is fixedly connected with a lifting platform, and equipment placing bins are arranged on the left side and the right side of the front face of the mine repair vehicle correspondingly. According to the mine repair auxiliary fixing mechanism, the shock absorptionperformance of the mine repair vehicle is improved through a shock absorption mechanism, the service life of repair equipment inside the equipment placing bins is prolonged, meanwhile, after stoppingthe mine repair vehicle, a jack is used for driving a connecting block to move downwards through a piston rod, the connecting block drives a supporting rod to move downwards, the supporting rod drives a fixing plate to move downwards to be fixed to the ground at the bottom of the inner side of a rail to prevent the mine repair vehicle from sliding, and the problems that existing mine repair auxiliary devices are prone to being damaged by vibration during transportation and sliding due to poor fixing effect are solved. The mine repair auxiliary fixing mechanism has the advantages of good anti-shock effect and good fixing effect, the fixed stability during mine repair is improved, and the service life of the repair equipment is prolonged.

The invention discloses an energy source-saving streetlamp. The energy source-saving streetlamp comprises a streetlamp body and a power supply device, wherein the streetlamp body comprises a lamp post and a bulb; the power supply device is electrically connected with the bulb and comprises a power generation component and a storage battery electrically connected with the power generation component; the power generation component comprises a supporting post, a liquid cylinder, a power generation gear and a rack which is matched with the power generation gear; one end of the supporting post is fixed to a road surface; an inserting opening is formed in the bottom of the liquid cylinder; the supporting post goes into the liquid cylinder through the inserting opening; the liquid cylinder is fully filled with liquid which is easily expanded when being heated; the power generation gear is arranged on one side of the side wall of the liquid cylinder; an output end of the power generation gear is connected with a transmission; an output end of the transmission is connected with a power generation machine; an output end of the power generation machine is electrically connected with the storage battery. The characteristic of heat expansion and cold contraction of the liquid is used, and the renewable solar energy serves as a power source, so that the utilization rate of solar energy is high, and the generated power can substantially satisfy the needs of night illumination of the streetlamp.

The invention discloses a garbage recovery device for environment-friendly municipal administration path bridge engineering and treatment method. A feeding hopper is connected to the upper part of theleft side of a machine cover, a left crusher is fixedly connected to the left side wall of the machine cover, a cam matching groove is formed in the back of a right crusher, a driving cam is locatedin the cam matching groove and connected with a driving large wheel disc through a wheel shaft, a driving small wheel disc is arranged on a crushing motor shaft, the driving large wheel disc drives the driving small wheel disc to rotate, a spiral blade is arranged on a grinding shaft, the right end of the grinding shaft is connected with a speed reducer and a grinding motor, a water flowing hole is formed in the right side of the bottom wall of a compression area, an exhaust port is formed in the right side of the top wall of the compression area, a compression air cylinder is arranged on theleft part of the compression area, a heating resistance wire is arranged on the right part of the compression area, a cylinder shaft of the compression cylinder is connected with a compression plate,a water pump is arranged inside a water storage area and connected with a water spraying ring through a connecting water pipe, and a water outlet is formed in the water spraying ring. According to thegarbage recovery device, garbage can be effectively recycled and reused, the method is green and environmentally friendly, and the garbage recovery device is suitable for being widely applied to garbage recycling treatment.

The invention provides a logistics tray, and belongs to the technical field of logistics transportation equipment. The invention solves the problem that the stability of a logistics tray roller in theprior art is poor. The logistics tray comprises a tray body and a plurality of guide covers fixedly disposed at the bottom of the tray body; each guide cover is provided with an air bag, a lower joint and a roller connected to the lower joint; each lower joint comprises a main body having an annular shape and a convex portion located at a central portion of the main body portion and convex upwardly with respect to the main body portion; each air bag is located above the main body portion; the edge of the main body portion forms a sliding fit with the inner side wall of the corresponding guidecover; an outer peripheral wall of the convex portion forms an annular inflatable cavity with the inner side wall of the corresponding guide cover; and each air bag portion is embedded in the inflatable cavity when the corresponding roller is retracted into the guide cover. The invention has the advantages of high bearing capacity and good lifting and lowering stability of the rollers.

The invention belongs to the technical field of music teaching equipment, and particularly relates to a display device for music teaching. The device comprises a box body, a first cavity and a secondcavity are formed in the box body, a first support column and a motor are fixedly connected to the bottom of the inner wall of the first cavity, and a first groove is formed in the first support column; by arranging the second cavity, materials and props used for teaching display are conveniently stored, the motor is controlled to work, a driving bevel gear is driven to rotate to be engaged with adriven bevel gear to rotate, a first rotating shaft is driven to rotate, and a threaded cap can be driven to move up and down, so that a second supporting column is driven to move up and down; a mounting plate can be driven to move upwards through upward movement, a display plate can be conveniently used, the mounting plate can be driven to move downwards through downward movement, the second supporting column can be conveniently retracted into the first supporting column, the mounting plate can be conveniently retracted into the first cavity, so that the display plate can be stored and protected.

The invention discloses an automatic pressure relief and explosion-proof type reaction kettle pressure relief system, and relates to the field of pressure relief of reaction kettles. The reaction kettle comprises a kettle body, a pressure relief pipe is installed on one side of the top of the kettle body, a support is installed on the outer side of the pressure relief pipe, a limiting sleeve is fixed to the top of the bottom end of the support, a sliding groove is formed in the inner side of the limiting sleeve, and a pressure sensor is installed on the sliding groove. When the pressure sensor is in an extruded state for a long time, the pressure relief pipe compresses the spring to the limit all the time and extrudes the pressure sensor at the same time, resistance changes are generated after a metal resistance strain gauge on the pressure sensor is subjected to mechanical shape, and therefore the resistance changes are converted into digital signals to be transmitted to an operation panel; if yes, the operation panel automatically turns on the alarm lamp to give an alarm to remind workers, the workers open the active pressure relief pipe, the pressure in the reaction kettle is kept stable, the reaction kettle is prevented from being in a high-pressure state for a long time, and safety is improved.

The invention relates to the technical field of solar cell panel manufacturing devices, in particular to a heavy double-cantilever lifting table. The heavy double-cantilever lifting table comprises aframe and two lifting mechanisms which are correspondingly arranged in the frame; each lifting mechanism comprises a lifting arm, a retractable arm, a retractable cylinder, a lead screw and a lead screw sleeve; T-shaped fixing plates are fixed on the rear side of each lifting arm; transvers sliding tracks are fixed on the T-shaped fixing plates; a transverse sliding plate which is matched with thecorresponding transverse sliding track is fixed on the rear side of each retractable arm; a lifting claw is fixed on the front portion of each retractable arm; each retractable cylinder is fixed on the rear side of the corresponding lifting arm; a piston rod of each retractable cylinder is connected with the corresponding retractable arm; two ends of each lead screw are separately mounted on twosides of the frame vertically through bearings; each lead screw sleeve is matched with the corresponding lead screw, and is fixedly connected with the corresponding lifting arm; and the top of each lead screw is connected with a motor arranged on the top of the frame through a belt. Compared with the prior art, the heavy double-cantilever lifting table has the advantages that the working efficiency is greatly improved, and the labor intensity of workers is reduced.

The invention relates to a full-automatic intermittent-conveying and cutting machine for traditional Chinese medicine. The full-automatic intermittent-conveying and cutting machine comprises a rack device, a cutting device and an intermittent conveying device. The intermittent conveying device and the cutting device are installed in the rack device. The rack device comprises a rack, a vertical frame, a cross girder, a feeding groove, a discharging groove, a motor, a speed regulating box, bolts, a belt, a first belt wheel and a pin, wherein the rack, the vertical frame, the cross girder, the feeding groove and the discharging groove are welded and fixed into a whole. The motor and the speed regulating box are fixed into the rack through the bolts, and connected through the belt. The first belt wheel is fixed to the speed regulating box through the pin. The intermittent conveying device comprises an intermittent rotating assembly, a conveying belt assembly and a roller conveying assembly. The full-automatic intermittent-conveying and cutting machine is reasonable in structural design, the cutting device and the intermittent conveying device are tightly coupled, and the traditional Chinese medicine is conveyed and cut synchronously. In cutting application, through intermittent conveying of the traditional Chinese medicine, the cutting thickness for the traditional Chinese medicine can be regulated by controlling the conveying speed.

The invention provides a fish meat separating device, and belongs to the technical field of fish meat processing equipment. The fish meat separating device provided by the invention comprises a base, a fourth rotating shaft, two supporting blocks, a first motor, an extrusion block, a first linkage mechanism and a second linkage mechanism; the fourth rotating shaft is vertically and rotatably arranged on the base; a rotating disc is coaxially and fixedly arranged on the fourth rotating shaft; a plurality of second through holes are formed in the rotating disc; the two supporting blocks are fixedly arranged on the base in parallel; a second rotating shaft is rotationally arranged between the two supporting blocks; the extrusion block is vertically arranged on the two supporting blocks in a sliding mode; the extrusion block is located above the rotating disc; the extrusion block makes contact with the upper side face of the rotating disc in at least position; the first linkage mechanism can drive the extrusion block to slide up and down through rotation of the second rotating shaft; and the second linkage mechanism can drive the fourth rotating shaft to rotate intermittently through rotation of the second rotating shaft. The fish meat separating device provided by the invention can quickly separate fishbones in fish meat and improve the meat separation efficiency.

The invention discloses bridge pier inner wall defect detection equipment and method. The equipment comprises a motion control assembly, wherein a telescopic support rod and an imaging assembly are arranged outside the motion control assembly, and a roller is arranged at the end part of the telescopic support rod; and the imaging assembly can rotate by 360 degrees around the motion control assembly, and the imaging assembly and the motion control assembly are in communication connection with a control center. Through combination of a mechanical structure and electrical equipment, the equipment can be always attached to the inner wall of a bridge pier, corresponding friction force exists, and the imaging assembly and the inner wall of the bridge pier can be always kept at a preset distance while the equipment can stably slide up and down on the inner wall of the bridge pier; and therefore, the equipment can obtain clear image data required by inner wall defect detection more accurately.

The invention relates to a moon shallow layer sampling tool with sequence preserving and packaging functions, which comprises a cut-in cutter head, a bottom connector, a bottom packaging sheet, a packaging inner tube and a packaging outer tube, the packaging inner tube is sleeved in the packaging outer tube in a sliding manner, and a compaction plunger is arranged in the packaging inner tube. Thecompaction plunger is connected to a top connector at the top of the packaging inner tube through a spring. The bottom packaging sheet is installed at one end of the bottom connector, and the cut-in cutter head is installed at the other end of the bottom connector. One end of the bottom connector is installed at the bottom of the packaging outer tube. Before sampling, the packaging inner tube is partially located in the bottom connector and opens the bottom packaging sheet, and after sampling, the packaging inner tube slides along the packaging outer tube and moves out of the bottom connectorto close the bottom packaging sheet. According to the invention, the assembly with order preserving and packaging functions is integrated at the head position of the sampling tool, so that the acquired lunar soil stratification information can be effectively ensured during lunar soil shallow layer sampling.

The invention discloses a navigable temporary access control card and a use method thereof, and belongs to the technical field of intelligent access cards. The invention discloses the navigable temporary access control card and the use method thereof. The navigable temporary access control card comprises an entrance guard card shell, and a display screen is fixedly mounted on the outer wall of oneside of the front surface of the entrance guard card shell; the display screen is provided with a sound outlet hole formed in the outer wall of the entrance guard card shell; a button hole is formedbelow the sound outlet hole; a sound inlet hole is formed in the right side of the button hole, an integrated terminal is fixedly installed in the entrance guard card shell, a magnetic card chip is fixedly installed on the right side of the integrated terminal, a broadcasting loudspeaker is fixedly installed on the left side of the integrated terminal, a button switch is fixedly installed below the broadcasting loudspeaker, and a charging port is formed in the outer wall of the side, away from the broadcasting loudspeaker, of the power source. The access control card has a navigation functionand is convenient for visitors to visit, and the matched access control card placing device is arranged, so that the access control card is convenient to place and take out, and the convenience is improved.