Metal plate and rapid mounting and dismounting structure thereof

Abstract

The invention discloses a metal plate and a quick mounting and dismounting structure thereof, and relates to the technical field of metal plate mounting. The structure comprises a connecting frame, a metal plate, a limiting piece, a pulling piece and a traction piece. A limiting piece and a pulling piece which can move transversely are arranged in the containing cavities in the two sides of the metal plate, and controllable connection and separation of the limiting piece and the pulling piece are achieved through a rotatable pulling rod. A first bench taper hole is formed in the stand column of the connecting frame. During installation, the metal plate is arranged in the frame, the traction piece is pulled downwards, the limiting piece and the pulling piece are connected, and after the limiting piece and the pulling piece are loosened, the limiting piece stretches out under the action of the second extension spring, and the first table cone block is locked into the first table cone hole. And during disassembly, the traction piece is pulled downwards again, the pulling rod is extruded to rotate by 90 degrees, the limiting piece is separated from the pulling piece, the first table cone block retracts and is separated from the first table cone hole under the action of the first extension spring, and then the metal plate can be taken out. The one-key type quick locking and releasing device does not need screws and tools, one-key type quick locking and releasing are achieved through pure mechanical linkage, and the one-key type quick locking and releasing device is particularly suitable for occasions needing frequent disassembly and assembly.

Description

Technical Field

[0001] This invention relates to the field of sheet metal installation technology, and in particular to a sheet metal assembly and its quick assembly and disassembly structure. Background Technology

[0002] Sheet metal parts are widely used in products such as cabinets, control boxes, and equipment housings. The way they are fixed to the supporting frame directly affects assembly efficiency, maintenance convenience, and connection reliability. Currently, the mainstream fixing method is screw locking. Although this method is simple and universal, it has a series of inherent defects: First, installation and disassembly must rely on special tools such as screwdrivers. During on-site maintenance or temporary adjustments, the lack of readily available tools often delays the work. Second, to ensure screw connection, threaded holes must be pre-drilled in the sheet metal or nuts must be used. After repeated disassembly and assembly, stripping of the threads is very likely to occur, leading to damage or even scrapping of the sheet metal parts, increasing maintenance costs. Third, screws are prone to loosening under long-term vibration conditions, posing a safety hazard, and need to be checked and tightened regularly. Finally, the entire process of tightening or loosening screws is time-consuming, and small parts (such as screws and washers) are easy to lose, affecting overall work efficiency and cost control.

[0003] Therefore, there is an urgent need to develop a sheet metal fixing structure that can be quickly installed and disassembled without additional tools, has reliable connections, and can adapt to vibration environments, in order to overcome the many shortcomings of traditional screw fixing methods. Summary of the Invention

[0004] The purpose of this invention is to provide a sheet metal assembly and its quick installation and disassembly structure to solve the problems of complex assembly, need for tools, easy loosening, and easy damage to sheet metal caused by traditional screw fixing methods.

[0005] A sheet metal structure and its quick installation and disassembly structure include a connecting frame, a sheet metal plate, a limiting component, a pulling component, and a traction component; The connecting frame includes horizontally arranged horizontal columns and vertical columns; the vertical columns are symmetrically fixed at both ends of the horizontal columns, and a first conical hole is provided on the side of the two vertical columns that are close to each other. The sheet metal plate has two mirror-shaped receiving cavities on both sides near the two columns, and the limiting member and the pulling member are slidably arranged in the receiving cavities; The limiting member and the pulling member are slidably connected, and the limiting member is slidably connected to the first conical hole; Each of the two pulling members is detachably connected to a traction member on one side that is close to each other; By pulling the traction member, the connection / separation between the limiting member and the pulling member is achieved, thereby causing the limiting member to conform to / move away from the first tapered hole, thus realizing the locking / unlocking of the sheet metal plate.

[0006] Furthermore, a first fixing plate and a second fixing plate are fixedly provided inside the receiving cavity; The limiting component includes a limiting push rod, a limiting first fixing block, a limiting connecting rod, a limiting second fixing block, and a first tension spring; The pulling component includes a first fixed block, a pulling kit, a pulling rod, a pulling connecting rod, a second fixed block, and a second tension spring; The cavity contains, from the end closest to the corresponding column along the length direction, the limiting push rod, the limiting first fixing block, the first fixing plate, the second tension spring, the pulling first fixing block, the pulling kit, the pulling rod, the limiting second fixing block, the first tension spring, the second fixing plate, and the pulling second fixing block; A plurality of limiting connecting rods are arranged in a circumferential array on one side of the limiting first fixing block and the limiting second fixing block that are close to each other, and the two ends of the limiting connecting rods are respectively fixedly connected to the limiting first fixing block and the limiting second fixing block; A plurality of the pulling connecting rods are arranged in a circumferential array on one side of the first and second fixed blocks that are close to each other, and the two ends of the pulling connecting rods are respectively fixedly connected to the first and second fixed blocks. The limiting connecting rod passes through the first fixing plate and the pulling first fixing block, and is slidably connected to both of them; The pull connecting rod passes through the limiting second fixing block and the second fixing piece, and is slidably connected to both of them; The second tension spring is fixedly connected at both ends to the first fixing plate and the first pulling fixing block; The first tension spring is fixedly connected at both ends to the limiting second fixing block and the second fixing plate; The pulling assembly is fixedly provided on one side of the first fixed block, and the pulling assembly is slidably connected to the pulling rod. When the pulling rod rotates, it can connect to or separate from the second fixed block. The first limiting fixing block, the first pulling fixing block, the second limiting fixing block, and the second pulling fixing block are slidably connected to the receiving cavity; Each of the two second fixed blocks is connected to a traction member on one side where they are close to each other.

[0007] Furthermore, the pulling assembly includes an outer shell, an inner shell, a compression spring, a first arc-shaped block, and a second arc-shaped block; The first arc-shaped block and the second arc-shaped block have the same shape; The pull rod includes a limiting post and a rod body; the limiting post is symmetrically provided on the side wall of the rod body near the pull kit; The inner shell is provided with a coaxial inner shell on one side wall of the outer shell, and four first arc-shaped blocks are arranged in a circumferential array at the end of the inner shell. The four first arc-shaped blocks are connected end to end. The second arc-shaped blocks are arranged in a circumferential array on the other side wall of the outer shell. The four second arc-shaped blocks are connected end to end. The second arc-shaped blocks are closer to the limiting second fixing block. The four first arc-shaped blocks and the four second arc-shaped blocks are mirrored, and one set is rotated 45° around the axis and then set, with the two sets spaced apart. The limiting post is provided between the four first arc-shaped blocks and the four second arc-shaped blocks; The inner housing is provided with the compression spring, the compression spring is connected to the rod, and the rod passes through the outer housing and is slidably connected to the inner housing.

[0008] Furthermore, the pull rod also includes a limiting block, which is fixedly disposed at the other end of the rod body; The length of the limiting block is greater than the diameter of the rod, and the width of the limiting block is less than or equal to the diameter of the rod; The second limiting block includes a limiting baffle and a base. The base is symmetrically provided with two limiting baffles near the end of the pull rod. The limiting baffles are in the shape of a "7". The size of the two limiting baffles at their closest point is greater than the width of the limiting block but less than its length. By pulling the traction member, the pulling kit is moved axially, thereby causing the rod to move axially until it contacts the seat and is squeezed and rotated. The connection / separation with the limiting baffle is achieved by different length and width ratios of the limiting block, so that when the pulling kit rebounds, the limiting member is moved / not moved in the rebound direction.

[0009] Furthermore, the end of the limiting push rod away from the first limiting fixing block is provided with a first conical block, and the first conical block is adapted to the first conical hole; The pulling member drives the limiting member to move laterally, thereby connecting / separating the first cone block from the first cone hole, and thus locking / unlocking the sheet metal plate to the connecting frame.

[0010] Furthermore, a communication port is provided between the two receiving cavities, communicating with both of them; The sheet metal plate is provided with two longitudinally symmetrically connected cavities, and the sheet metal plate is provided with two symmetrically connected grooves on its surface. The connected cavities connect the grooves and the connecting opening. The traction component includes a handle, a traction rope, and a guide wheel; The guide wheel is rotatably provided inside the communication port, and the pull handle is longitudinally slidable at the top of the groove. One end of the traction rope is connected to the pull handle, and the other end is wound around the guide wheel and then connected to the pulling member. Pulling the two handles longitudinally can cause the two pulling parts to move closer to each other.

[0011] Furthermore, a lifting handle is horizontally fixed in the middle of the groove.

[0012] Furthermore, the bottom of the sheet metal plate has a horizontal linear array of several second conical blocks, and the top of the horizontal column has a horizontal linear array of several second conical holes, with the second conical blocks adapted to the second conical holes.

[0013] The present invention has the following beneficial effects: Completely screwless design: Completely eliminates fasteners such as screws and nuts, simplifies the bill of materials (BOM), and reduces material procurement and management costs.

[0014] Hands-free operation, no tools required: The entire installation or disassembly process can be completed by simply operating the handles on the sheet metal with one or two hands, greatly improving the ease of operation. It is especially suitable for on-site maintenance scenarios where tools are inconvenient or missing, and can effectively avoid production delays caused by searching for tools.

[0015] Eliminate sheet metal damage: The sheet metal body does not require threaded holes or tapping, which fundamentally avoids problems such as thread stripping, sheet metal tearing or deformation caused by repeated disassembly and assembly, extends the service life of sheet metal parts and reduces spare parts costs.

[0016] Reliable connection, vibration-proof and anti-loosening: The locking method uses a conical surface (frustum-shaped block and frustum-shaped hole) fit, combined with spring preload, to create a self-locking tendency. It is not easy to loosen in a vibrating environment, and the connection stability is far superior to ordinary screws. The frustum-shaped block can be made of elastic materials such as rubber, which also has vibration reduction and noise reduction functions.

[0017] Extremely high assembly efficiency: The installation and disassembly process can be completed in seconds. Compared with the traditional screw-tightening method, it saves a lot of time and greatly improves the efficiency of production assembly and on-site maintenance.

[0018] The ingenious structure and reliable unlocking mechanism achieve precise and reliable switching between locked and unlocked states through the combined force of three springs (first tension spring, second tension spring, and compression spring) and the 90-degree rotation of the limit block. The design ensures that "deadlock" or inability to unlock will not occur under normal operation, resulting in high operational certainty.

[0019] Accurate guidance and positioning: The second cone block at the bottom of the sheet metal plate cooperates with the second cone hole on the crossbar to provide gravity guidance and precise positioning in the early stage of installation, ensuring that the first cone block can be smoothly aligned with the first cone hole.

[0020] Integrated and user-friendly design: The traction mechanism (handle, traction rope, guide wheel) is built into the sheet metal panel, resulting in a clean appearance. The pull handle facilitates the removal of the sheet metal panel after unlocking, providing a user-friendly interface. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 2 Enlarged view at point C; Figure 4 for Figure 1 Enlarged view at point B in the middle; Figure 5 This is a schematic diagram of the connection frame; Figure 6 This is a schematic diagram showing the disassembled limit and pull components; In the diagram: 1-Connecting frame, 101-Column, 102-First conical hole, 104-Horizontal column, 105-Second conical hole; 2-Sheet metal plate, 201-Receiving cavity, 202-First fixing piece, 203-Second fixing piece, 204-Connecting cavity, 205-Groove, 206-Connecting opening; 3-Limiting component, 301-Limiting push rod, 302-Limiting first fixing block, 303-Limiting connecting rod, 304-Limiting second fixing block, 3041-Limiting baffle, 3042-Seat body, 305-First tension spring; 4-Pull component, 401-Pull first fixed block, 402-Pull kit, 4021-Outer shell, 4022-Inner shell, 4023-Compression spring, 4024-First arc-shaped block, 4025-Second arc-shaped block, 403-Pull rod, 4031-Limiting post, 4032-Rod body, 4033-Limiting block, 404-Pull connecting rod, 405-Pull second fixed block, 406-Second tension spring; 5-Traction component, 501-Pull handle, 502-Traction rope, 503-Guide wheel; 6-Lifting handle. Detailed Implementation

[0022] The following will refer to the appendices in the embodiments of the present invention. Figure 1-6 The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0023] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0024] This embodiment provides a sheet metal structure and its quick installation and disassembly structure. It includes a connecting frame 1, a sheet metal plate 2, a limiting member 3, a pulling member 4, and a traction member 5. The connecting frame 1 includes a horizontally arranged horizontal column 104 and a vertical column 101. The vertical columns 101 are symmetrically fixed at both ends of the horizontal column 104, and a first conical hole 102 is provided on one side of the two vertical columns 101 that are close to each other. The sheet metal plate 2 has two mirror-shaped receiving cavities 201 on both sides near the two vertical columns 101. The limiting member 3 and the pulling member 4 are slidably connected within the receiving cavities 201. The limiting member 3 and the pulling member 4 are slidably connected, and the limiting member 3 is slidably connected to the first conical hole 102. A traction member 5 is detachably connected to one side of each of the two pulling members 4 that are close to each other. By pulling the traction member 5, the connection / separation between the limiting member 3 and the pulling member 4 is achieved, thereby causing the limiting member 3 to conform to / move away from the first conical hole 102, thus locking / unlocking the sheet metal plate 2.

[0025] During installation, the sheet metal plate 2 is first slid naturally into the two uprights 101, allowing it to fall naturally to the bottom and align with the top of the horizontal column 104. The second cone block and the second cone hole 105 are naturally aligned and in contact with each other. Then, both handles 501 are pulled vertically downwards simultaneously, driving the pulling parts 4 on both sides towards the center via the traction rope 502 and guide wheel 503. The pulling parts 4, through the cooperation of the pulling kit 402 and the pulling rod 403, cause the limiting block 4033 to rotate and engage with the limiting stop plate 3041 (at this time, the cooperation between the limiting block 4033 and the limiting stop plate 3041 is as follows). Figure 3 (As shown); when the handle 501 is released, the second tension spring 406 causes the limiting member 3 to move towards the connecting frame 1, so that the first cone block at the end of the limiting push rod 301 is inserted into the first cone hole 102, thereby locking the sheet metal plate 2.

[0026] During disassembly, pull both handles 501 downwards simultaneously. The pulling rod 403 rotates under the pressure of the seat 3042, causing the limiting block 4033 to disengage from the limiting baffle 3041 (the limiting block 4033 is in...). Figure 3(Rotate 90° on the basis of the first conical block), at this time the limiting part 3 is not pulled by the pulling part 4. Under the rebound action of the first tension spring 305, the first conical block is easily pushed away from the first conical hole 102, thereby releasing the lock. The sheet metal plate 2 can then be removed by lifting the handle 6 vertically upward.

[0027] It should be noted that, in its natural state, the first cone block is completely retracted within the receiving cavity 201. However, in the absence of external force (i.e., without the force to pull the handle 501), the second tension spring 406 can pull the first cone block out of the receiving cavity 201 and make it completely fit into the first cone hole 102.

[0028] Reference Figure 6 The locking and unlocking principle of the limit block 4033 needs to be explained in detail: (The text abruptly ends here, likely due to an incomplete sentence or a formatting error.) Figure 6 In the indicated state, to unlock, the puller 4 needs to be pulled downwards (to the lower right of the diagram, the same below) via the handle 501. During the pulling process, the following state occurs: the limiting block 4033 abuts against the end face of the seat 3042. As the downward movement continues, the compression spring 4023 is continuously compressed (it is necessary to ensure that the elastic coefficient of the compression spring 4023 is less than that of the first tension spring 305; for the same force, the deformation of the compression spring 4023 is greater). Thus, the first arc-shaped block 4024 and the second arc-shaped block 4025 have a relative downward displacement relative to the limiting post 4031 and the rod 4032. When the limiting post 4031 contacts the arc surface of the first arc-shaped block 4024, it will rotate along the arc surface and move upwards relative to it (rotating by 45°). During this process, the second tension spring 406 is always in a stretched state (transitioning from a weak stretched state to a strong stretched state), and the compression spring 4023 is always in a compressed state (transitioning from a weak compressed state to a strong compressed state). The first tension spring 305 transitions from a stretched state to a strong compressed state. In the compressed state (or a state during the process of changing from a strongly stretched state to a weakly stretched state, or from a strongly stretched state to a natural state), when the handle 501 is stopped, the second tension spring 406 begins to rebound to the natural state. During its rebound, the compression spring 4023 pushes the limiting post 4031 and the rod 4032 downward. When the limiting post 4031 contacts the second arc-shaped block 4025, it will rotate downward along its arc surface (this downward state is only relative to pulling the first fixed block 401). Its rotation angle is 45°, and the entire process rotates 90°. At this time, the limiting block 4033 can disengage from the limiting stop 3041. After that, regardless of the state of the first tension spring 305, it will rebound to the natural state. There is no state that cannot be unlocked during this process. The state that cannot be unlocked is when all three springs are in the compressed state at the same time, which is contrary to the requirements of this design. Therefore, it can definitely be unlocked. The process from unlocking to locking can be referred to the unlocking process described above, and will not be repeated here.

[0029] like Figure 2-3As shown, a first fixing plate 202 and a second fixing plate 203 are fixedly provided inside the receiving cavity 201; The limiting component 3 includes a limiting push rod 301, a limiting first fixing block 302, a limiting connecting rod 303, a limiting second fixing block 304, and a first tension spring 305; The pulling component 4 includes a first fixed block 401, a pulling kit 402, a pulling rod 403, a pulling connecting rod 404, a second fixed block 405, and a second tension spring 406. The cavity 201 contains, from one end closest to the corresponding column 101 along the length direction, the following components are arranged sequentially: the limiting push rod 301, the limiting first fixing block 302, the first fixing piece 202, the second tension spring 406, the pulling first fixing block 401, the pulling kit 402, the pulling rod 403, the limiting second fixing block 304, the first tension spring 305, the second fixing piece 203, and the pulling second fixing block 405; A plurality of limiting connecting rods 303 are arranged in a circular array on one side of the limiting first fixing block 302 and the limiting second fixing block 304 that are close to each other. The two ends of the limiting connecting rods 303 are respectively fixedly connected to the limiting first fixing block 302 and the limiting second fixing block 304. A plurality of pulling connecting rods 404 are arranged in a circular array on one side of the first fixed block 401 and the second fixed block 405 that are close to each other. The two ends of the pulling connecting rods 404 are respectively fixedly connected to the first fixed block 401 and the second fixed block 405. The limiting connecting rod 303 passes through the first fixing piece 202 and the pulling first fixing block 401, and is slidably connected to both of them; The pull connecting rod 404 passes through the limiting second fixing block 304 and the second fixing piece 203, and is slidably connected to both of them; The second tension spring 406 is fixedly connected at both ends to the first fixing plate 202 and the first fixing block 401; The first tension spring 305 is fixedly connected to the second fixing block 304 and the second fixing plate 203 at both ends; The first fixing block 401 is fixedly provided with the pulling kit 402 on one side. The pulling kit 402 is slidably connected to the pulling rod 403. When the pulling rod 403 rotates, it can connect or separate from the limiting second fixing block 304. The limiting first fixing block 302, the pulling first fixing block 401, the limiting second fixing block 304, and the pulling second fixing block 405 are slidably connected to the receiving cavity 201; Each of the two second fixing blocks 405 is connected to a traction member 5 on one side that is close to each other, and the two second fixing blocks 405 are connected to the traction rope 502.

[0030] like Figure 2 , 3 As shown, the pull assembly 402 includes an outer shell 4021, an inner shell 4022, a compression spring 4023, a first arc-shaped block 4024, and a second arc-shaped block 4025; The first arc-shaped block 4024 and the second arc-shaped block 4025 have the same shape, as detailed below. Figure 6 ; The pull rod 403 includes a limiting post 4031 and a rod body 4032; the limiting post 4031 is symmetrically provided on the side wall of the rod body 4032 near the pull kit 402. The inner shell 4022 is coaxially arranged on one side wall of the outer shell 4021. Four first arc-shaped blocks 4024 are arranged in a circumferential array at the end of the inner shell 4022, and the four first arc-shaped blocks 4024 are connected end to end. Four second arc-shaped blocks 4025 are arranged in a circumferential array on the other side wall of the outer shell 4021, and the four second arc-shaped blocks 4025 are connected end to end. The second arc-shaped blocks 4025 are closer to the limiting second fixing block 304. The four first arc-shaped blocks 4024 and the four second arc-shaped blocks 4025 are mirrored, and one set is rotated 45° around the axis and then set, with the two sets spaced apart. The limiting post 4031 is provided between the four first arc-shaped blocks 4024 and the four second arc-shaped blocks 4025; The inner housing 4022 is provided with the compression spring 4023, the compression spring 4023 is connected to the rod 4032, the rod 4032 passes through the outer housing 4021 and is slidably connected to the inner housing 4022.

[0031] like Figure 3 As shown, the pull rod 403 also includes a limiting block 4033, which is fixedly disposed at the other end of the rod body 4032; The length of the limiting block 4033 is greater than the diameter of the rod 4032, and the width of the limiting block 4033 is less than or equal to the diameter of the rod 4032; The second limiting fixing block 304 includes a limiting baffle 3041 and a base 3042. The base 3042 is symmetrically provided with two limiting baffles 3041 near one end of the pull rod 403. The limiting baffles 3041 are in the shape of a "7". The size of the two limiting baffles 3041 at the closest point is greater than the width of the limiting block 4033 but less than its length. By pulling the traction member 5, the pulling kit 402 is moved axially, thereby causing the rod 4032 to move axially until it contacts the seat 3042 and is squeezed and rotated. The connection / separation with the limiting plate 3041 is achieved by the different length and width ratios of the limiting block 4033, so that when the pulling kit 402 rebounds, it drives / does not drive the limiting member 3 to move in the rebound direction.

[0032] In addition, the end of the limiting push rod 301 away from the limiting first fixing block 302 is provided with a first conical block, and the first conical block is adapted to the first conical hole 102; The pulling member 4 drives the limiting member 3 to move laterally, thereby connecting / separating the first cone block from the first cone hole 102, and thus locking / unlocking the sheet metal plate 2 to the connecting frame 1.

[0033] like Figure 1 As shown, a communication port 206 communicating with both of the two receiving cavities 201 is provided between them; The sheet metal plate 2 is provided with two longitudinally symmetrically connected cavities 204, and the sheet metal plate 2 is provided with two symmetrically connected grooves 205. The connected cavity 204 connects the grooves 205 and the connecting opening 206. The traction component 5 includes a handle 501, a traction rope 502, and a guide wheel 503; The guide wheel 503 is rotatably provided in the communication port 206, and the handle 501 is longitudinally slidable at the top of the groove 205. One end of the traction rope 502 is connected to the handle 501, and the other end is wrapped around the guide wheel 503 and then connected to the pulling member 4. Pulling the two handles 501 longitudinally can cause the two pulling parts 4 to move closer to each other.

[0034] In addition, a lifting handle 6 is horizontally fixed in the middle of the groove 205 for lifting the sheet metal plate 2.

[0035] In addition, the bottom of the sheet metal plate 2 has a number of second cone blocks arranged in a horizontal linear array, and the top of the horizontal column has a number of second cone holes 105 arranged in a horizontal linear array, with the second cone blocks adapted to the second cone holes 105.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, substitutions, or variations made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A sheet metal assembly and its quick installation and disassembly structure, characterized in that: Including connecting frame (1), sheet metal plate (2), limiting piece (3), pulling piece (4) and traction piece (5); The connecting frame (1) includes a transversely arranged cross column (104) and a vertical column (101); The cross column (104) is symmetrically provided with the vertical column (101) at both ends, and the first taper hole (102) is arranged on the side of the two vertical columns (101) close to each other; The sheet metal plate (2) is provided with two mirror image arranged accommodating cavities (201) on both sides close to the two vertical columns (101), and the limiting piece (3) and the pulling piece (4) are slidably arranged in the accommodating cavities (201); The limiting piece (3) and the pulling piece (4) are slidably connected, and the limiting piece (3) is slidably connected with the first taper hole (102); Each of the two pulling pieces (4) is detachably connected with a traction piece (5) on the side close to each other; By pulling the traction piece (5), the connection / separation between the limiting piece (3) and the pulling piece (4) is realized, so as to drive the limiting piece (3) to be close to / distant from the first taper hole (102), and then the locking / unlocking of the sheet metal plate (2) is realized.

2. The sheet metal and its quick mounting and dismounting structure according to claim 1, characterized in that: The first fixed sheet (202) and the second fixed sheet (203) are fixedly arranged in the accommodating cavity (201); The limiting piece (3) includes a limiting push rod (301), a limiting first fixed block (302), a limiting connecting rod (303), a limiting second fixed block (304) and a first extension spring (305); The pulling piece (4) includes a pulling first fixed block (401), a pulling sleeve (402), a pulling rod (403), a pulling connecting rod (404), a pulling second fixed block (405) and a second extension spring (406); The limiting push rod (301), the limiting first fixed block (302), the first fixed sheet (202), the second extension spring (406), the pulling first fixed block (401), the pulling sleeve (402), the pulling rod (403), the limiting second fixed block (304), the first extension spring (305), the second fixed sheet (203) and the pulling second fixed block (405) are sequentially arranged in the length direction from the end close to the corresponding vertical column (101) in the accommodating cavity (201); The limiting first fixed block (302) and the limiting second fixed block (304) are circumferentially arrayed with a plurality of limiting connecting rods (303) on the side close to each other, and the two ends of the limiting connecting rod (303) are fixedly connected with the limiting first fixed block (302) and the limiting second fixed block (304) respectively; The pulling first fixed block (401) and the pulling second fixed block (405) are circumferentially arrayed with a plurality of pulling connecting rods (404) on the side close to each other, and the two ends of the pulling connecting rod (404) are fixedly connected with the first fixed block (401) and the pulling second fixed block (405) respectively; The limiting connecting rod (303) penetrates the first fixed sheet (202) and the pulling first fixed block (401), and is in sliding connection with both; The pulling connecting rod (404) penetrates the limiting second fixed block (304) and the second fixed sheet (203), and is in sliding connection with both; The second tensile spring (406) is fixedly connected at both ends of the first fixed sheet (202) and the first fixed block (401); The first tensile spring (305) is fixedly connected at both ends of the second fixed block (304) and the second fixed sheet (203); The first fixed block (401) is fixedly provided with the pulling sleeve assembly (402) on one side, the pulling sleeve assembly (402) is in sliding connection with the pulling rod (403), and the pulling rod (403) can be connected or separated from the limiting second fixed block (304) when rotating; The limiting first fixed block (302), the pulling first fixed block (401), the limiting second fixed block (304) and the pulling second fixed block (405) are in sliding connection with the containing cavity (201); Two second fixed blocks (405) are each connected with a traction member (5) on one side close to each other.

3. The sheet metal and its quick mounting and dismounting structure according to claim 2, characterized in that: The pulling sleeve assembly (402) comprises an outer shell (4021), an inner shell (4022), a compression spring (4023), a first arc-shaped block (4024) and a second arc-shaped block (4025); The first arc-shaped block (4024) and the second arc-shaped block (4025) are consistent in shape; The pulling rod (403) comprises a limiting column (4031) and a rod body (4032); the rod body (4032) is provided with the limiting column (4031) on the side wall of one end close to the pulling sleeve assembly (402) in a symmetrical manner; One side wall in the outer shell (4021) is provided with the inner shell (4022) coaxial along the axial direction, the inner shell (4022) is provided with four first arc-shaped blocks (4024) in an array around the end portion, the four first arc-shaped blocks (4024) are connected in a head-to-tail manner, another side wall in the outer shell (4021) is provided with four second arc-shaped blocks (4025) in an array around the axial center, the four second arc-shaped blocks (4025) are connected in a head-to-tail manner, and the second arc-shaped blocks (4025) are closer to the limiting second fixed block (304); One group of the four first arc-shaped blocks (4024) and the four second arc-shaped blocks (4025) is arranged after being rotated by 45° around the axial center in a mirror image manner, and is arranged in a spaced manner; The limiting column (4031) is arranged between the four first arc-shaped blocks (4024) and the four second arc-shaped blocks (4025); The inner shell (4022) is provided with the compression spring (4023), the compression spring (4023) is connected with the rod body (4032), the rod body (4032) penetrates the outer shell (4021) and is in sliding connection with the inner shell (4022).

4. The sheet metal and its quick mounting and dismounting structure according to claim 3, characterized in that: The pulling rod (403) further comprises a limiting block (4033) fixedly arranged at the other end of the rod body (4032); The limiting block (4033) has a length greater than the diameter of the rod body (4032) and a width less than or equal to the diameter of the rod body (4032); The limiting second fixed block (304) comprises limiting flaps (3041) and a seat body (3042), two limiting flaps (3041) are symmetrically arranged at one end of the pulling rod (403), and the limiting flaps (3041) are in the shape of "7". By pulling the traction member (5), the pulling sleeve (402) is axially moved to drive the rod body (4032) to be axially moved until it is pressed and rotated after contacting the seat body (3042), and the connection / separation between the limiting block (4033) and the limiting flaps (3041) is realized by different length-width ratios, so that the limiting member (3) is driven / moved in the rebound direction when the pulling sleeve (402) rebounds.

5. The sheet metal and its quick mounting and dismounting structure according to claim 2, characterized in that: The limiting push rod (301) is provided with a first taper block at the end away from the limiting first fixed block (302), and the first taper block is adapted to the first taper hole (102); The pulling member (4) drives the limiting member (3) to move transversely, so that the first taper block is connected / disconnected with the first taper hole (102), and the sheet metal plate (2) is locked / unlocked in the connecting frame (1).

6. The sheet metal and its quick mounting and dismounting structure according to claim 1, characterized in that: The two accommodating cavities (201) are provided with a communication port (206) in communication with the two accommodating cavities (201); The sheet metal plate (2) is longitudinally symmetrically provided with two communication cavities (204), the sheet metal plate (2) is symmetrically provided with two grooves (205) on the plate surface, and the communication cavities (204) communicate the grooves (205) and the communication port (206); The traction member (5) comprises a pull handle (501), a traction rope (502) and a guide wheel (503); The guide wheel (503) is rotatably arranged in the communication port (206), the pull handle (501) is slidably arranged in the groove (205), and the traction rope (502) is connected at one end to the pull handle (501) and at the other end to the pulling member (4) after winding around the guide wheel (503); Pulling the two pull handles (501) longitudinally can drive the two pulling members (4) to move close to each other.

7. The sheet metal and its quick mounting and dismounting structure according to claim 6, characterized in that: A pull handle (6) is fixedly arranged in the middle of the groove (205).

8. The sheet metal and its quick mounting and dismounting structure according to claim 1, characterized in that: The sheet metal plate (2) is provided with a plurality of second taper blocks in a linear array at the bottom, the top of the horizontal column is provided with a plurality of second taper holes (105) in a linear array, and the second taper blocks are adapted to the second taper holes (105).

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