A gas discharge pipe tarpaulin fixing device

Abstract

The utility model relates to a tunnel pipeline field, concretely relates to a gas discharge pipe tarp fixing device, including first fastener, first fastener includes a plurality of hoop circle that symmetrically interval arrangement, and the hoop circle all is equipped with opening part, and the opening part on a plurality of hoop circles constitutes the clamping groove, and the gas discharge pipe fixing device still includes second fastener, and the second fastener includes first finger claw and second finger claw, and the first finger claw is connected with the second finger claw through the vertical rod, and the first finger claw, second finger claw and vertical rod enclose and constitute the clamping groove, and the clamping groove is used for placing the gas discharge pipe, and the vertical first finger claw is equipped with the pressure bar, and the pressure bar one end is located in the clamping groove, and the pressure bar is configured to be able to carry out the lifting movement in the clamping groove, and first fastener and second fastener are arranged along the gas discharge pipe extension direction, and first fastener and second fastener are detachably connected between, and the spacing between first fastener and second fastener is adjustable.

Description

Technical Field

[0001] This utility model relates to the field of tunnel pipelines, and in particular to a waterproof cloth fixing device for gas discharge pipes. Background Technology

[0002] During the mining process in coal mines and other underground mines, a certain amount of methane gas is usually released. To ensure the safety of underground operations, it is necessary to regularly release the methane gas in the mine. However, the tunnel environment is prone to groundwater seepage, which causes the surface of the methane gas release pipe to become damp. This dampness leads to problems such as corrosion of metal parts and rusting and jamming of connection structures. It may even affect the stability and sealing of the connection between the pipe and the fastener. In addition, methane gas is often accompanied by condensation, moisture, or water droplets formed by temperature differences during transportation. Without effective isolation measures, condensation may drip down the pipe surface, causing surrounding equipment to become damp and rusted, increasing the safety hazards in the working environment. Therefore, in order to improve the adaptability of the methane gas release pipeline system in the humid underground environment, it is necessary to install a waterproof cloth structure on the outside of the methane gas release pipe. This waterproof fabric can cover the pipe surface, forming an effective waterproof protective layer to prevent external water seepage from contacting the pipe wall. It also serves to isolate condensate, slow down corrosion, and protect fasteners and other structural components. Currently, when laying waterproof fabric, hot melt adhesive is applied to the tunnel wall to allow the fabric to adhere to the wall, thus covering the gas discharge pipe. However, this method often results in large gaps between the waterproof fabric and the gas discharge pipe. If there are large gaps between the waterproof fabric and the gas discharge pipe, water accumulation, condensation, or seepage can easily accumulate in the gaps. This not only fails to achieve effective waterproof protection but may also exacerbate the accumulation of local moisture, induce rust on the pipe surface, jam fasteners, and even breed microorganisms, affecting the hygiene and safety of the equipment. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies where the large gaps between the waterproof cloth and the gas discharge pipe easily lead to water accumulation, condensation, or seepage, which not only fails to provide effective water protection but may also exacerbate local moisture accumulation, induce pipe surface corrosion, fastener jamming, and even microbial growth, affecting equipment hygiene and safety. This invention provides a waterproof cloth fixing device for gas discharge pipes.

[0004] In a first aspect, the present invention provides a waterproof cloth fixing device for a gas discharge pipe, including a first fastener, the first fastener including a plurality of symmetrically spaced hoops, each of the hoops having an opening, adjacent hoops being connected by a connecting rod, and the openings on the plurality of hoops forming a snap-fit ​​groove. The gas discharge pipe fixing device also includes a second fastener, which includes a first claw and a second claw. The first claw and the second claw are connected by a vertical rod. The first claw, the second claw, and the vertical rod together form a clamping groove for placing the gas discharge pipe. A pressure rod is vertically provided on the first claw. One end of the pressure rod is located in the clamping groove. The pressure rod is configured to be able to move up and down within the clamping groove. The first fastener and the second fastener are arranged along the extension direction of the gas discharge pipe. The first fastener and the second fastener are detachably connected, and the distance between the first fastener and the second fastener is adjustable.

[0005] This utility model provides a waterproof cloth fixing device for gas discharge pipes. A first fastener is formed by connecting several hoops with openings in series via a connecting rod. The openings on the hoops create a locking groove that engages with the gas discharge pipe. After the waterproof cloth covers the gas discharge pipe, the locking groove allows the first fastener to engage with the pipe. The hoops press down on the waterproof cloth, ensuring it adheres closely to the gas discharge pipe and improving the fit between the cloth and the pipe. The first fastener can also be detachably connected to a second fastener. The second fastener, with its first and second claws and a vertical rod connecting them, forms a clamping groove through which the gas discharge pipe can pass. Combined with a pressure rod structure on the first claw, this vertically presses the gas discharge pipe and waterproof cloth within the clamping groove, ensuring a tight fit between parts of the waterproof cloth and the pipe surface, further enhancing overall stability. By employing a multi-point pressing structure for the first and second fasteners and an adjustable spacing between them, the waterproof fabric can be more tightly fitted to the gas discharge pipe in both the circumferential and vertical directions, reducing problems such as condensation buildup, water seepage corrosion, and fabric detachment. This also enhances the long-term reliability and service life of the entire device in humid and complex environments. Furthermore, the first and second fasteners are connected as a single unit via an installation rod, reducing the loosening, misalignment, or shaking issues that can easily occur when individual fasteners are fixed. The installation rod, while connecting the first and second fasteners, also provides support and reinforcement to the entire fixing device, reducing the likelihood of bulging or detachment of the waterproof fabric due to fastener displacement or detachment if a single fastener falls off.

[0006] Preferably, the first finger claw is provided with a threaded hole vertically, the threaded hole is connected to the clamping groove, and the pressure rod is connected to the first finger claw through the threaded hole.

[0007] By setting a threaded hole on the first finger that communicates with the clamping groove, and connecting the pressure rod to the first finger through the threaded hole, precise control and stable guidance of the pressure rod position can be achieved, so that the pressure rod can move up and down stably and controllably in the clamping groove, thereby facilitating the effective clamping of the gas discharge pipe and its external waterproof cloth.

[0008] Preferably, the pressure rod includes a rod body, the rod body is provided with an external thread portion adapted to the threaded hole, the rod body is provided with a pressure-applying structure at one end of the clamping groove, and the rod body is provided with a handle at the end away from the pressure-applying structure.

[0009] By providing an external thread on the rod body, it can be threaded to the first claw, which improves the connection stability between the pressure rod and the first claw. A pressure-applying structure is provided at one end of the rod body located in the clamping groove. The cooperation between the external thread and the pressure-applying structure allows the pressure rod to contact the waterproof cloth by pressing down. The cooperation between the external thread and the threaded hole reduces the risk of the pressure rod not being able to press the surface of the waterproof cloth tightly during use. A handle is also provided at the end of the rod body away from the pressure-applying structure. By placing the handle horizontally on the rod body, the operator can drive the pressure rod to move up and down by turning the handle.

[0010] Preferably, the pressure-applying structure is made of rubber.

[0011] Increase the friction when in contact with the waterproof fabric to improve the clamping force of the second fastener.

[0012] Preferably, the rod body has a horizontal mounting hole at one end near the handle, the handle includes a rod that fits the mounting hole, and a limit rod is vertically mounted at one end of the rod.

[0013] By setting a mounting hole near the handle on the rod body, and designing the handle structure to be connected by inserting the rod into the mounting hole, and providing a limiting rod at one end of the rod, the handle position can be quickly installed, removed, and locked. The limiting rod prevents the handle from loosening or rotating during use, ensuring the continuous stability of the clamping force and enhancing the reliability and safety of the overall structure.

[0014] Preferably, the side of the second claw facing the first claw is provided with a rubber pad.

[0015] The friction between the second claw and the waterproof cloth is increased, thereby increasing the clamping force of the second fastener on the waterproof cloth.

[0016] Preferably, the first fastener has a mounting rod at one end facing the second fastener, one end of the mounting rod is connected to the first fastener, and the other end of the mounting rod is slidably connected to the second fastener.

[0017] By setting an installation rod at the end of the first fastener facing the second fastener, and fixing the installation rod to the first fastener and sliding it to the second fastener, the relative distance between the first fastener and the second fastener can be continuously and adjustable during the installation process, effectively adapting to different installation positions, pipe size changes, or spatial layout differences.

[0018] Preferably, the mounting rod is provided with a sliding block, the sliding block is continuously arranged along the extension direction of the mounting rod, the vertical rod is provided with a through hole in the transverse direction, the through hole is provided with a sliding groove, the opening direction of the sliding groove is the same as the opening direction of the through hole, and the sliding groove cooperates with the sliding block to realize the vertical rod sliding along the mounting rod.

[0019] By setting multiple sliding blocks continuously arranged along the extension direction on the mounting rod, and setting matching through holes and sliding grooves on the vertical rod, the second fastener can be axially adjusted on the mounting rod.

[0020] Preferably, a limiting block is provided at the end of the mounting rod away from the first fastener, and the limiting block is used to limit the sliding path of the second fastener.

[0021] By setting a limit block, the sliding path of the second fastener can be restricted when it slides along the mounting rod, thus preventing the second fastener from falling off and being lost.

[0022] Preferably, the limiting block and the mounting rod are connected by a thread. Specifically, the mounting rod is provided with an external thread, and the limiting block is provided with a threaded hole. The connection between the limiting block and the mounting rod is achieved through the cooperation of the external thread and the threaded hole.

[0023] This facilitates the subsequent removal and transfer of the second fastener by disassembling the limiting block.

[0024] Preferably, the snap-fit ​​groove is provided with a rubber layer.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a waterproof cloth fixing device for gas discharge pipes. A first fastener is formed by connecting several hoops with openings in series via a connecting rod. The openings on the hoops create a locking groove that engages with the gas discharge pipe. After the waterproof cloth covers the gas discharge pipe, the locking groove allows the first fastener to engage with the pipe. The hoops press down on the waterproof cloth, ensuring it adheres closely to the gas discharge pipe, thus improving the fit between the waterproof cloth and the pipe. The first fastener can also be detachably connected to a second fastener. The second fastener, with a first claw, a second claw, and a vertical rod connecting the claws, forms a clamping groove through which the gas discharge pipe can pass. Combined with a pressure rod structure on the first claw, this vertically presses the gas discharge pipe and waterproof cloth within the clamping groove, ensuring a localized tight fit of the waterproof cloth to the pipe surface, further enhancing overall stability. By employing a multi-point pressing structure for the first and second fasteners and an adjustable spacing between them, the waterproof fabric can be more tightly fitted to the gas discharge pipe in both the circumferential and vertical directions, reducing problems such as condensation buildup, water seepage corrosion, and fabric detachment. This also enhances the long-term reliability and service life of the entire device in humid and complex environments. Furthermore, the first and second fasteners are connected as a single unit via an installation rod, reducing the loosening, misalignment, or shaking issues that can easily occur when individual fasteners are fixed. The installation rod, while connecting the first and second fasteners, also provides support and reinforcement to the entire fixing device, reducing the likelihood of bulging or detachment of the waterproof fabric due to fastener displacement or detachment if a single fastener falls off. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the waterproof cloth fixing device for the gas discharge pipe in this utility model; Figure 2 This is a schematic diagram of the clamping frame in this utility model; Figure 3 In this utility model Figure 2 Enlarged view of part A; Figure 4 This is a three-dimensional structural diagram of the clamping frame in this utility model; Figure 5 In this utility model Figure 4 Enlarged view of part B; Figure 6 This is a schematic diagram of the structure of the pressure bar in this utility model; Figure 7 This is a schematic diagram of the structure of the first fastener in this utility model; Figure 8 In this utility model Figure 7 Enlarged view of part C; Figure 9This is a schematic diagram of the hoop structure in this utility model; Figure 10 This is a structural diagram of the second fastener in this utility model; Figure 11 This is a structural diagram of the pressure rod without the handle connected in this utility model.

[0027] The markings in the diagram are: 1-First fastener; 11-Hoop ring; 111-Opening; 12-Connecting rod; 13-Snap-fit ​​groove; 2-Second fastener; 21-Clamping groove; 22-Pressure rod; 221-Rod body; 2211-Mounting hole; 222-Pressure application structure; 223-Handle; 2231-Rod; 2232-Limiting rod; 23-First claw; 231-Threaded hole; 24-Second claw; 241-Rubber pad; 25-Vertical rod; 251-Through hole; 252-Sliding groove; 3-Mounting rod; 31-Sliding block; 32-Limiting block. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0029] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0031] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0032] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0033] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0034] Example 1 like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 and Figure 10The illustrated device for fixing waterproof fabric to a gas discharge pipe includes a first fastener 1. The first fastener 1 comprises several spaced-apart rings 11, connected in series by a connecting rod 12. Each ring 11 has an opening 111. The first fastener 1 forms a snap-fit ​​groove 13 through the openings 111 of the rings 11, allowing the first fastener 1 to snap into the waterproof fabric laid on the gas discharge pipe, thereby securing the waterproof fabric to the gas discharge pipe. The gas discharge pipe waterproof cloth fixing device also includes a second fastener 2 connected to the first fastener 1. The second fastener 2 includes a first claw 23 and a second claw 24 spaced apart from the first claw 23. The first claw 23 and the second claw 24 are connected by a vertical rod 25, and the first claw 23, the second claw 24 and the vertical rod 25 together form a clamping groove 21. The opening direction of the clamping groove 21 is consistent with the opening direction of the snap-fit ​​groove 13, and the gas discharge pipe is located in the clamping groove 21. The first claw 23 has a vertically threaded hole 231, which is connected to the clamping groove 21. The first claw 23 is connected to the pressure rod 22 through the threaded hole 231. One end of the pressure rod 22 is located in the clamping groove 21 and is provided with a pressure applying structure 222. The other end of the pressure rod 22 is provided with a handle 223. By rotating the handle 223, the pressure rod 22 can be driven to move up and down, thereby controlling the pressure applying structure 222 to press down in the direction of the gas emission pipe, so that the waterproof cloth on the gas emission pipe is in contact with the outer wall of the gas emission pipe (this step is mainly to reduce the bulge between the outer wall of the gas emission pipe and the waterproof cloth through the pressure applying structure 222, and on the other hand, to clamp the gas emission pipe at a fixed point through the cooperation of the pressure applying structure 222 and the second claw 24). The first fastener 1 and the second fastener 2 are arranged along the extension direction of the gas emission pipe. The first fastener 1 and the second fastener 2 are detachably connected, and the distance between the first fastener 1 and the second fastener 2 is adjustable.

[0035] In one or more embodiments, the pressure rod 22 includes a rod body 221. The rod body 221 is provided with an external thread portion adapted to the threaded hole 231. A pressure-applying structure 222 is provided at one end of the rod body 221 located in the clamping groove 21. A handle 223 is provided at the end of the rod body 221 away from the pressure-applying structure 222. By providing an external thread portion on the rod body 221, it is threadedly connected to the first finger 23. This threaded connection improves the connection stability between the pressure rod 22 and the first finger 23. A pressure-applying structure 222 is provided at one end of the clamping groove 21. The external thread part and the pressure-applying structure 222 cooperate to allow the pressure rod 22 to contact the waterproof cloth by pressing down. The cooperation between the external thread part and the threaded hole 231 can reduce the risk that the pressure rod 22 is difficult to press tightly onto the surface of the waterproof cloth during use. A handle 223 is also provided at the end of the rod body 221 away from the pressure-applying structure 222. By setting the handle 223 laterally on the rod body 221, the operator can drive the pressure rod 22 to move up and down by rotating the handle 223. Furthermore, the pressure-applying structure 222 is made of rubber; Optionally, the pressure-applying structure 222 is a rubber head, such as... Figure 6 and Figure 11 As shown.

[0036] In one or more embodiments, the rod body 221 has a horizontal mounting hole 2211 at one end near the handle 223. The handle 223 includes a rod 2231 adapted to the mounting hole 2211. A limiting rod 2232 is vertically mounted at one end of the rod 2231. By providing a mounting hole 2211 on the rod body 221 near the handle 223, and designing the handle 223 structure to be connected by inserting the rod 2231 into the mounting hole 2211, and providing a limiting rod 2232 at one end of the rod 2231, quick installation, disassembly, and locking of the handle 223 can be achieved. The limiting rod 2232 prevents the handle 223 from loosening or rotating during use, ensuring the continuous stability of the clamping force and enhancing the reliability and safety of the overall structure. Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown.

[0037] In one or more embodiments, the side of the second claw 24 facing the first claw 23 is provided with a rubber pad 241, which increases the friction between the second claw 24 and the waterproof cloth, and improves the clamping force of the second fastener 2 on the waterproof cloth. Figure 2 As shown.

[0038] In one or more embodiments, the first fastener 1 is provided with an installation rod 3 at one end facing the second fastener 2. One end of the installation rod 3 is connected to the first fastener 1, and the other end of the installation rod 3 is slidably connected to the second fastener 2. By providing an installation rod 3 at one end of the first fastener 1 facing the second fastener 2, and fixing the installation rod 3 to the first fastener 1 and slidably connecting it to the second fastener 2, the relative distance between the first fastener 1 and the second fastener 2 can be continuously and adjustable during the installation process, effectively adapting to different installation positions, pipe size changes, or spatial layout differences. Furthermore, the mounting rod 3 is provided with a sliding block 31, which is continuously arranged along the extension direction of the mounting rod 3. The vertical rod 25 is provided with a transverse through hole 251, and a sliding groove 252 is provided in the through hole 251. The opening direction of the sliding groove 252 is the same as the opening direction of the through hole 251. The sliding groove 252 cooperates with the sliding block 31 to realize the sliding of the vertical rod 25 along the mounting rod 3. By providing multiple sliding blocks 31 continuously arranged along their extension direction on the mounting rod 3, and providing matching through holes 251 and sliding grooves 252 on the vertical rod 25, the second fastener 2 can achieve axial sliding adjustment on the mounting rod 3, such as... Figure 7 and Figure 8 As shown.

[0039] In one or more embodiments, a limiting block 32 is provided at the end of the mounting rod 3 away from the first fastener 1. The limiting block 32 is used to limit the sliding path of the second fastener 2. By setting the limiting block 32, when the second fastener 2 slides along the mounting rod 3, the sliding path of the second fastener 2 can be restricted, preventing the second fastener 2 from falling off and being lost. Figure 7 and Figure 8 As shown.

[0040] In one or more embodiments, the snap-fit ​​groove 13 is provided with a rubber layer.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for fixing waterproof cloth to a gas discharge pipe, characterized in that, Includes a first fastener (1), which includes a plurality of symmetrically spaced hoop rings (11), each of which has an opening (111), and two adjacent hoop rings (11) are connected by a connecting rod (12), and the openings on the plurality of hoop rings (11) form a snap-fit ​​groove (13). The gas discharge pipe waterproof cloth fixing device also includes a second fastener (2), which includes a first claw (23) and a second claw (24). The first claw (23) and the second claw (24) are connected by a vertical rod (25). The first claw (23), the second claw (24) and the vertical rod (25) together form a clamping groove (21). The clamping groove (21) is used to place the gas discharge pipe. A pressure rod (22) is vertically provided on the first claw (23). One end of the pressure rod (22) is located in the clamping groove (21). The pressure rod (22) is configured to be able to move up and down in the clamping groove (21). The first fastener (1) and the second fastener (2) are arranged along the extension direction of the gas discharge pipe. The first fastener (1) and the second fastener (2) are detachably connected, and the distance between the first fastener (1) and the second fastener (2) is adjustable.

2. The gas discharge pipe waterproof cloth fixing device according to claim 1, characterized in that, The first finger (23) is provided with a vertical threaded hole (231), the threaded hole (231) is connected to the clamping groove (21), and the pressure rod (22) is connected to the first finger (23) through the threaded hole (231).

3. The gas discharge pipe waterproof cloth fixing device according to claim 2, characterized in that, The pressure rod (22) includes a rod body (221), the rod body (221) is provided with an external thread that is adapted to the threaded hole (231), the rod body (221) is provided with a pressure structure (222) at one end of the rod body (221) located in the clamping groove (21), and the rod body (221) is provided with a handle (223) at the end away from the pressure structure (222).

4. The gas discharge pipe waterproof cloth fixing device according to claim 3, characterized in that, The pressure-applying structure (222) is made of rubber.

5. The gas discharge pipe waterproof cloth fixing device according to claim 3, characterized in that, The rod body (221) has a horizontal mounting hole (2211) at one end near the handle (223). The handle (223) includes a rod (2231) adapted to the mounting hole (2211). A limit rod (2232) is vertically mounted at one end of the rod (2231).

6. The waterproof cloth fixing device for a gas discharge pipe according to claim 1, characterized in that, The second claw (24) has a rubber pad (241) on the side facing the first claw (23).

7. The gas discharge pipe waterproof cloth fixing device according to claim 1, characterized in that, The first fastener (1) has an installation rod (3) at one end facing the second fastener (2). One end of the installation rod (3) is connected to the first fastener (1), and the other end of the installation rod (3) is slidably connected to the second fastener (2).

8. The gas discharge pipe waterproof cloth fixing device according to claim 7, characterized in that, The mounting rod (3) is provided with a sliding block (31), the sliding block (31) is continuously arranged along the extension direction of the mounting rod (3), the vertical rod (25) is provided with a through hole (251) in the horizontal direction, the through hole (251) is provided with a sliding groove (252), the opening direction of the sliding groove (252) is the same as the opening direction of the through hole (251), the sliding groove (252) cooperates with the sliding block (31) to realize the vertical rod (25) sliding along the mounting rod (3).

9. A gas discharge pipe waterproof cloth fixing device according to claim 8, characterized in that, The mounting rod (3) has a limiting block (32) at one end away from the first fastener (1), and the limiting block (32) is used to limit the sliding path of the second fastener (2).

10. A gas discharge pipe waterproof cloth fixing device according to any one of claims 1-9, characterized in that, The snap-fit ​​groove (13) is provided with a rubber layer.

Images