Anti-slip gasket and foundation bolt anti-corrosion protection device

Abstract

The present invention relates to an anti-slip gasket and a foundation bolt anti-corrosion protection device, comprising a gasket body, wherein the shape of the inner hole of the gasket body is consistent with the shape of the nut of the foundation bolt, so as to be sleeved on the outside of the nut of the foundation bolt, and characterized in that a connection structure is provided at or near the outer edge of the gasket body to connect with the protective cover of the foundation bolt; each edge of the inner hole of the gasket body is provided with a convex structure to play a damping role, so as to prevent the protective cover from rotating and falling off under external force vibration. The present invention has an anti-slip function, and the anti-slip gasket plays a tightening role on the protective cover of the foundation bolt, etc., and can prevent the protective cover from rotating under strong winds or external forces, and prevent it from falling off, thereby endangering the safety of use.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation bolt anti-corrosion protection devices, and in particular relates to an anti-slip gasket and a foundation bolt anti-corrosion protection device. Background Art

[0002] Bolts are basic elements for connection and fixing. Due to moisture and oxygen in the air, bolts exposed to the air are prone to zinc corrosion, oxidation and rust. Especially for bolts installed outdoors and in coastal areas, in addition to air, there may also be erosion from wind, frost, rain, snow, sunlight, and the ocean. Especially the erosion from the ocean, it is more likely to cause corrosion between the metals of the bolts and nuts. Once corroded, it is likely to affect the stability of the structure, and even cause dangers such as fracture and collapse. Even if routine inspections are carried out frequently to ensure that corroded bolts are replaced in time, it is not convenient to replace them because they are difficult to unscrew after corrosion. At the same time, it will also affect the inconvenience of inspection and disassembly of related parts fixed with bolts, wasting a lot of manpower and material resources.

[0003] At present, there are not many anti-corrosion protection measures for foundation bolts in places such as high-speed railways, ordinary railways, and municipal engineering, and the effect is average. The prior art discloses a foundation bolt anti-corrosion protection cover, which can protect the foundation bolts from corrosion, but when encountering external forces such as vibration and strong wind, the protection cover is easy to fall off, thereby endangering the safety of use. Summary of the invention

[0004] The present invention designs an anti-dropping gasket and a foundation bolt anti-corrosion protection device, which solves the problem in the prior art that the foundation bolt anti-corrosion protection cover is easy to drop off under the action of external vibration force, strong wind, etc., thereby ensuring safety in use.

[0005] In order to achieve the above object, the present invention adopts the following scheme:

[0006] An anti-dropping gasket comprises a gasket body, wherein the shape of the inner hole of the gasket body is consistent with the shape of the nut of the foundation bolt so as to be sleeved on the outside of the nut of the foundation bolt; a connecting structure is arranged at or near the outer edge of the gasket body to connect with the protective cover of the foundation bolt; each edge of the inner hole of the gasket body is provided with a convex structure to play a damping role and prevent the protective cover from rotating or falling off under external force vibration.

[0007] Furthermore, the protruding structure is a sheet structure of any shape, the protruding structure is arranged vertically or approximately vertically to the upper plane of the gasket body, and the inner side surface of the protruding structure is in close contact with the outside of the nut of the foundation bolt.

[0008] Furthermore, a plurality of barb structures are provided on the inner side surface of the protruding structure.

[0009] Furthermore, the protrusion structures are arranged continuously or discontinuously on the edges of the inner hole.

[0010] Furthermore, a circular pit is processed in the center of the gasket body, and the inner hole of the gasket body is arranged at the bottom of the circular pit. The shape of the inner hole of the gasket body is a polygon consistent with the nut shape of the foundation bolt, and the diameter of the circumscribed circle of the polygonal inner hole is equal to the diameter of the bottom of the circular pit. The edge of the inner hole of the gasket body is higher than the upper plane of the gasket body to form a convex structure with an upper polygonal hole and a lower conical hole.

[0011] Furthermore, the conical hole is small at the top and large at the bottom, and the inner wall surface of the conical hole is smoothly arranged with a small arc from top to bottom.

[0012] Furthermore, the connection structure includes an annular convex wall arranged at the outer edge or close to the outer edge of the gasket body, and a tooth structure is arranged on the outer wall surface of the annular convex wall, and the tooth structure cooperates with the toothed structure arranged on the inner wall of the mouth of the protective cover.

[0013] Furthermore, the connection structure includes a spring sheet arranged at or near the outer edge of the gasket body, and the spring sheet protrudes toward one side of the gasket body; the spring sheet can be of any shape and elastically fits on the outer edge of the mouth of the protective cover.

[0014] Furthermore, the spring piece is S-shaped and elastically fits on the outer edge of the mouth of the protective cover.

[0015] Furthermore, there are one or more spring pieces.

[0016] Furthermore, the anti-drop gasket is an integral structure or a split structure.

[0017] Furthermore, the anti-drop gasket of the split structure is composed of two half split structures or a combination of more than two split structures; the split structures are respectively provided with snap joints and snap grooves, and the corresponding snap joints and snap grooves are snapped together to combine the split structures into a whole.

[0018] Furthermore, the front end of the card connector is wedge-shaped.

[0019] Furthermore, the split structure is also provided with positioning holes and positioning pins, respectively, and the corresponding positioning holes and positioning pins are plugged together to enhance the stability of the split structure anti-dropping gasket.

[0020] Furthermore, the positioning holes and the positioning pins are respectively arranged on the butt joint end surfaces of the split structures.

[0021] Furthermore, the anti-dropping gasket may have any shape.

[0022] Furthermore, the anti-dropping gasket has a circular shape.

[0023] Furthermore, the anti-drop gasket is made of metal or non-metal material.

[0024] Furthermore, the anti-slip gasket is made of plastic, nylon or modified materials.

[0025] A foundation bolt anti-corrosion protection device comprises a protective cover and any of the above-mentioned anti-slip gaskets.

[0026] Furthermore, the protective cover includes a sleeve body and a sleeve rod, one end of the sleeve body is open for the screw rod and nut of the foundation bolt to extend into, and the other end is connected to one end of the sleeve rod, the inner diameter of the sleeve rod is smaller than the inner diameter of the sleeve body, and is used to insert the screw rod, and the other end of the sleeve rod is closed.

[0027] Furthermore, the sleeve rod is provided with an internal thread which meshes with the thread of the screw rod.

[0028] Furthermore, the sleeve body has an outwardly expanded mouth at its opening.

[0029] Furthermore, an annular groove for applying glue is provided on the bottom surface of the sleeve opening.

[0030] Furthermore, a reinforcing rib structure is provided between the sleeve body and the sleeve rod.

[0031] Furthermore, a prism-shaped or approximately prism-shaped gripping portion is provided between the sleeve body and the sleeve rod.

[0032] Furthermore, anti-skid protrusions or anti-skid patterns are arranged on the outer surface of the sleeve body and / or the sleeve rod.

[0033] Furthermore, the outer shape structure of the sleeve body and / or the sleeve rod is any geometric structure or a combination of any geometric structures.

[0034] Furthermore, the outer structure of the sleeve body and / or the sleeve rod is a cylindrical structure, or a cylindrical structure or a prism structure whose generatrix is ​​a curve, or a prism structure or a truncated cone structure or a truncated pyramid structure whose side surface is a curved surface.

[0035] The anti-slip gasket and foundation bolt anti-corrosion protection device have the following beneficial effects:

[0036] (1) The anti-slip gasket and foundation bolt anti-corrosion protection device of the present invention can effectively isolate the corrosive medium and prevent the foundation bolts from being corroded; they are not easy to age, have a long service life, and can be reused many times; they can facilitate the disassembly of the bolts, reduce costs, speed up maintenance, and ensure the safety of the structure; and have an anti-slip function. The anti-slip gasket plays a tightening role on the protective cover of the foundation bolt, etc., and can prevent the protective cover from rotating under strong winds or external forces, and prevent it from falling off, thereby endangering the safety of use.

[0037] (2) The anti-detachment gasket of the present invention has protrusions on the edges of its inner hole, which can prevent the protective cover from rotating under strong winds or external forces; the barb structure provided on the inner side of the protrusion further ensures that the protective cover is stable and will not detach.

[0038] (3) The present invention is provided with an anti-falling gasket with a tooth structure, which can rotate slightly together with the foundation bolt protective cover under strong winds or external forces. Due to the annular tooth structure, the two are combined into one, so that they can rotate slightly together under strong winds; due to the tooth structure, the device can only rotate in the forward direction but not in the reverse direction, thereby preventing the foundation bolt protective cover from loosening from the screw rod and falling off, thereby endangering the power supply safety; the anti-falling gasket can only rotate in the forward direction, so that the connection between the foundation bolt protective cover and the bolt becomes tighter and tighter, thereby playing a tightening role on the foundation bolt protective cover, etc.

[0039] (4) In the present invention, the anti-dropping gasket adopts a split structure, which is easy to install and is not restricted by the misalignment of the nut.

[0040] (5) The present invention has a reasonable structure and is easy to install on site, saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 , Figure 1A : A front view and a left view of an anti-slip gasket in one embodiment of the present invention;

[0042] Figure 2 : A front view of an anti-slip gasket in a second embodiment of the present invention;

[0043] Figure 3 : A front view of an anti-slip gasket in a third embodiment of the present invention;

[0044] Figure 4 : A front view of an anti-slip gasket in the fourth embodiment of the present invention and a partial schematic view in the direction of A;

[0045] Figure 5 , Figure 5A : A front view and a left view of an anti-slip gasket in a fifth embodiment of the present invention;

[0046] Figure 6 : A front view of an anti-slip gasket in a sixth embodiment of the present invention;

[0047] Figure 7 : A front view of an anti-slip gasket in a seventh embodiment of the present invention;

[0048] Figure 8 , Fig. 8A : A front view and a left view of an anti-slip gasket in an eighth embodiment of the present invention;

[0049] Fig. 9 , Fig. 9A : A front view and a schematic diagram of the split structure of the anti-slip gasket in the ninth embodiment of the present invention;

[0050] Fig.10 : The use structure diagram of the anti-slip pad of the present invention Figure I ;

[0051] Fig.11 : The use structure diagram of the anti-slip pad of the present invention Figure II ;

[0052] Fig.12 : A schematic structural diagram of an embodiment of the protective cover in the present invention.

[0053] Description of reference numerals:

[0054] 1—protective cover; 11—sleeve body; 111—mouth; 112—groove; 12—sleeve rod; 13—grip; 2—anti-drop gasket; 21—gasket body; 22—spring; 23—convex structure; 24—annular convex wall; 25—tooth structure; 26—clamp joint; 27—clamp groove; 28—positioning hole; 29—positioning pin; 3—nut. DETAILED DESCRIPTION

[0055] The present invention will be further described below in conjunction with the accompanying drawings:

[0056] Figures 1 to 10 Several implementation methods of an anti-slip gasket and a foundation bolt anti-corrosion protection device of the present invention are shown.

[0057] Figure 1 , Figure 1A The first embodiment of the anti-slip pad of the present invention is shown. Figure 1 , Figure 1A 1 is a front view and a left view of the anti-slip gasket in the first embodiment of the present invention. Figure 1 , Figure 1AAs shown, the anti-slip gasket 2 in this embodiment includes a gasket body 21, and the shape of the inner hole of the gasket body 21 is consistent with the shape of the nut 3 of the foundation bolt, so as to be sleeved on the outside of the nut 3 of the foundation bolt. A connecting structure is provided at or near the outer edge of the gasket body 21 to connect with the protective cover 1 of the foundation bolt; each edge of the inner hole of the gasket body 21 is provided with a protruding structure 23 to play a damping role and prevent the protective cover from rotating or falling off under external force vibration. In this embodiment, the protruding structure 23 is a sheet structure of any shape, such as a rectangular sheet structure, a trapezoidal sheet structure, a triangular sheet structure, an arc-shaped sheet structure, etc. In this embodiment, the protruding structures 23 on each edge of the inner hole are all rectangular sheet structures. The protruding structure 23 is arranged vertically or approximately vertically to the upper plane of the gasket body 21, and its inner side surface is in close contact with the outside of the nut 3 of the foundation bolt, playing a damping role and preventing the protective cover from rotating or falling off under external force vibration. The raised structures 23 can be arranged continuously on each edge of the inner hole, such as continuously in one section, or can be arranged intermittently, such as arranged in multiple sections. In the present embodiment, the raised structures 23 on each edge of the inner hole are arranged continuously. The anti-slip gasket 2 has a circular shape, but can also be any shape as required. The inner hole of the gasket body 21 is made into the same shape as the nut 3, hexagonal or other shapes, and the inner hole is slightly larger than the outer size of the nut, which is convenient for installation on its outside. The anti-slip gasket 2 can be an integral structure or a split structure. The anti-slip gasket 2 with a split structure can be designed as a two-half split structure, such as Figure 3 It can also be composed of two or more split structures. Figure 3 The third embodiment of the anti-slip pad in the present invention is shown. Figure 3 2 is a front view of the anti-slip gasket in the third embodiment of the present invention. In this embodiment, the anti-slip gasket 2 is a two-half split structure, which is easy to install and is not restricted by the misalignment of the nut. The inner side of the protrusion structure 23 of the anti-slip gasket 2 can also be provided with a plurality of barb structures, such as Figure 4 shown. Figure 4 The fourth embodiment of the anti-dropping gasket in the present invention is shown. Figure 4 It is a front view and a partial schematic diagram of the A direction of the anti-dropping gasket in the fourth embodiment of the present invention. The barb structure further ensures the tight combination of the anti-dropping gasket and the nut 3, ensuring the stability of the protective cover 1 and preventing it from falling off.

[0058] like Figure 1 , Figure 1A , Figure 2 , Figure 3 , Figure 4As shown, the connection structure includes a spring piece 22 arranged at or near the outer edge of the gasket body 21, and the spring piece 22 protrudes to one side of the gasket body 21; the spring piece 22 can be of any shape and elastically fits on the outer edge of the mouth of the protective cover 1. In this embodiment, the spring piece is S-shaped and elastically fits on the outer edge of the mouth of the protective cover 1. There are one or more spring pieces 22. Figure 1 , Figure 3 , Figure 4 The anti-drop gasket in the embodiment has four spring pieces 22; Figure 2 In the embodiment, there are three shrapnel 22. Figure 2 The second embodiment of the anti-slip gasket in the present invention is shown. Figure 2 It is a front view of an anti-slip gasket in a second embodiment of the present invention.

[0059] Figure 5 , Figure 5A A fifth embodiment of the anti-slip pad of the present invention is shown. Figure 5 , Figure 5A 1 is a front view and a left view of the anti-slip gasket in the fifth embodiment of the present invention. Figure 5 , Figure 5AAs shown, the structure of the anti-slip gasket in the fifth embodiment is basically the same as that of the anti-slip gasket in the first embodiment, except that the specific structures of the convex structures 23 of the two are different. The anti-slip gasket 2 in the fifth embodiment, the gasket body 21 is processed with a circular pit in the center, the inner hole of the gasket body 21 is set at the bottom of the circular pit, the inner hole shape of the gasket body 21 is a polygon consistent with the shape of the nut 3 of the foundation bolt, the diameter of the circumscribed circle of the polygonal inner hole is equal to the diameter of the bottom of the circular pit, and the edge of the inner hole of the gasket body 21 is higher than the upper plane of the gasket body 21 to form a convex structure 23 of the upper polygonal hole and the lower conical hole. In this embodiment, the inner hole is a hexagonal hole, and the diagonal of the hexagon is the diameter of the bottom of the circular pit, that is, the circumscribed circle diameter of the hexagon is equal to the diameter of the bottom of the circular pit. This design forms a convex inner hole structure of the upper polygonal hole and the lower conical hole in the center of the gasket body 21, the conical hole is small on the top and large on the bottom, and the inner wall surface of the conical hole is smoothly arranged with a small arc from top to bottom. When the upper and lower nuts 3 of the foundation bolt are not aligned, the polygonal hole of the anti-drop gasket 2 is aligned and passes smoothly through the upper nut 3. Then, due to the presence of the conical surface, the anti-drop gasket 2 rotates a certain angle to align and passes smoothly through the second nut 3, which effectively solves the problem that the anti-drop gasket is difficult to install after the upper and lower nuts 3 of the foundation bolt are not aligned. The gasket can be rotated at the joint of the two nuts, which is convenient for installation at the bottom of the outer side of the lowest nut. At the same time, since the edge of the inner hole is higher than the upper plane of the gasket body 21, it has a good damping effect on the outside of the nut 3, preventing the protective cover 1 from rotating and falling off under external force vibration. The connection structure of the anti-drop gasket 2 includes a spring 22 arranged at the outer edge or near the outer edge of the gasket body 21, and the spring 22 protrudes to one side of the gasket body 21; the spring 22 can be of any shape and elastically fits on the outer edge of the mouth of the protective cover 1. In the present embodiment, the spring is S-shaped and elastically fits on the outer edge of the mouth of the protective cover 1. There are one or more springs 22. Such as Figure 5 The anti-drop gasket in the embodiment has four spring pieces 22; Figure 6 In the embodiment, there are three shrapnel 22. Figure 6 The sixth embodiment of the anti-slip gasket in the present invention is shown. Figure 6 2 is a front view of the anti-slip gasket in the sixth embodiment of the present invention. The anti-slip gasket 2 can be designed as a two-half split structure, such as Figure 7 It can also be composed of two or more split structures. Figure 7 The seventh embodiment of the anti-dropping gasket in the present invention is shown. Figure 7 It is a front view of the anti-slip gasket in the seventh embodiment of the present invention. In this embodiment, the anti-slip gasket 2 is a two-half split structure, which is easy to install and is not restricted by the misalignment of the nut.

[0060] Figure 8 , Fig. 8AThe eighth embodiment of the anti-slip pad of the present invention is shown. Figure 8 , Fig. 8A 2 is a front view and a left view of an anti-slip gasket in the eighth embodiment of the present invention. Figure 8 , Fig. 8A As shown, the structure of the anti-slip gasket in the eighth embodiment is basically the same as that of the anti-slip gasket in the first embodiment, except that the connection structures of the two are different. The anti-slip gasket 2 in the eighth embodiment, the connection structure includes an annular convex wall 24 arranged at the outer edge or near the outer edge of the gasket body 21, and a tooth structure 25 is arranged on the outer wall surface of the annular convex wall 24, and the tooth structure 25 cooperates with the tooth structure arranged on the inner wall of the mouth of the protective cover 1. The tooth structure 25 is tightly combined with the tooth structure arranged on the inner wall of the mouth of the protective cover 1, so that the anti-slip gasket 2 can rotate slightly with the protective cover 1 under strong winds or external forces. Since the tooth structure 25 is distributed on the annular convex wall 24 to form a circle of tooth structures, it cooperates with the corresponding tooth structure on the inner wall of the mouth of the protective cover 1, and the two are combined into one, so that they rotate slightly together under strong winds. Due to the existence of the tooth structure, the protective cover 1 can only rotate forward and cannot rotate reversely, thereby preventing the protective cover 1 from loosening the screw of the foundation bolt and falling off.

[0061] Fig. 9 , Fig. 9A The ninth embodiment of the anti-slip pad of the present invention is shown. Fig. 9 , Fig. 9A 1 is a front view and a schematic diagram of the split structure of the anti-slip gasket in the ninth embodiment of the present invention. Fig. 9 , Fig. 9AAs shown, the structure of the anti-slip gasket in the ninth embodiment is basically the same as that of the anti-slip gasket in the eighth embodiment, except that the anti-slip gasket 2 in the ninth embodiment is a split structure. The anti-slip gasket 2 of the split structure is composed of two half split structures or two or more split structures; the split structures are respectively provided with a clamping joint 26 and a clamping groove 27, and the corresponding clamping joint 26 and the clamping groove 27 are matched and clamped together to combine the split structure into a whole. Specifically, the anti-slip gasket in the ninth embodiment is a two-half split structure. A clamping joint 26 is provided on one half of the split, and a clamping groove 27 is provided on the other half of the split, and the clamping joint 26 and the corresponding clamping groove 27 are matched and clamped together to combine the two half splits into a whole. In this embodiment, there are two clamping joints 26 and two clamping grooves 27, respectively, and they are symmetrically arranged. In this embodiment, the front end of the clamping joint 26 is wedge-shaped, and the clamping joint 26 and the clamping groove 27 are respectively arranged on the protruding structure 23 of the opposite inner hole edge. Preferably, the two halves are also provided with positioning holes 28 and positioning pins 29, respectively. The positioning holes 28 and the corresponding positioning pins 29 are plugged together to further tightly combine the two halves into a whole, so as to enhance the stability of the split structure anti-drop gasket. The positioning holes 28 and the positioning pins 29 are respectively arranged on the butt joint end faces of the split structure. In the present embodiment, there are two positioning holes 28 and two positioning pins 29, respectively, and they are symmetrically arranged. In the present embodiment, the positioning holes 28 and the positioning pins 29 are respectively arranged on the butt joint end faces of the annular convex walls 24 that are opposite to each other. The split structure is easy to install and is not restricted by the misalignment of the nuts.

[0062] The anti-slip pad 2 of the present invention can be made of metal or non-metal material. Preferably, the anti-slip pad 2 of the present invention can be made of plastic or nylon or modified material.

[0063] Fig.10 and Fig.11 The schematic diagram of the use structure of the anti-slip gasket of the present invention is shown. Fig.10 and Fig.11 As shown, a foundation bolt anti-corrosion protection device comprises a protective cover 1 and an anti-slip gasket 2. The anti-slip gasket 2 is the above-mentioned anti-slip gasket.

[0064] The structure of the protective cover is as follows Figures 10 to 12As shown, the protective cover 1 includes a sleeve body 11 and a sleeve rod 12 that are integrally connected. One end of the sleeve body 11 is open for the screw and nut 3 of the foundation bolt to extend into, and the other end of the sleeve body 11 is connected to one end of the sleeve rod 12. The inner diameter of the sleeve rod 12 is smaller than the inner diameter of the sleeve body 11, and is used to insert the screw. The other end of the sleeve rod 12 is closed. A plurality of reinforcing rib structures (not shown in this embodiment) can be arranged between the sleeve body 11 and the sleeve rod 12. Preferably, a prism-shaped or approximately prism-shaped gripping portion 13 is also provided between the sleeve body 11 and the sleeve rod 12, which can serve as a gripping portion and also as a reinforcing rib. Preferably, an internal thread is provided in the sleeve rod 12, which can mesh with the thread of the screw, so that the protective cover 1 is fixed to the foundation bolt to prevent it from falling.

[0065] Preferably, the sleeve body 11 has an outwardly flared mouth portion 111 at its opening.

[0066] Preferably, an annular groove 112 for applying glue is provided on the bottom surface of the opening of the sleeve body 11 .

[0067] Preferably, the outer surface of the sleeve body 11 and / or the sleeve rod 12 may be provided with anti-skid protrusions or anti-skid patterns (not shown in this embodiment).

[0068] Preferably, the outer shape structure of the sleeve body 11 and / or the sleeve rod 12 is a random geometric structure or a combination of random geometric structures.

[0069] Preferably, the outer structure of the sleeve body 11 and / or the sleeve rod 12 is a cylindrical structure, or a cylindrical structure or a prism structure whose generatrix is ​​a curve, or a prism structure or a truncated cone structure or a truncated pyramid structure whose side surface is a curved surface.

[0070] The protective cover 1 of the present invention can be made of metal or non-metal material. Preferably, the protective cover 1 of the present invention can be made of plastic or nylon or modified material.

[0071] The anti-slip gasket and foundation bolt anti-corrosion protection device of the present invention can effectively isolate the corrosive medium and prevent the foundation bolts from being corroded; they are not easy to age, have a long service life, and can be reused many times; they can facilitate the disassembly of the bolts, reduce costs, speed up maintenance, and ensure the safety of the structure; and have an anti-slip function. The anti-slip gasket plays a fastening role on the protective cover, etc., and can prevent the protective cover from rotating under strong winds or external forces, and prevent it from falling off, thereby endangering the safety of use.

[0072] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An anti-drop gasket, comprising a gasket body, wherein the inner hole shape of the gasket body is consistent with the nut shape of the foundation bolt, so as to be sleeved on the outer side of the nut of the foundation bolt, characterized in that: A connecting structure is provided at the outer edge or near the outer edge of the gasket body to be connected to the protective cover of the foundation bolt; each edge of the inner hole of the gasket body is provided with a protruding structure, and the inner side surface of the protruding structure is in close contact with the outside of the nut of the foundation bolt to play a damping role and prevent the protective cover from rotating or falling off under external force vibration.

2. The anti-dropping gasket according to claim 1, characterized in that: The protruding structure is a sheet structure of any shape, and the protruding structure is arranged vertically or approximately vertically to the upper plane of the gasket body.

3. The anti-dropping gasket according to claim 2, characterized in that: The inner side of the protruding structure is also provided with Dry barbed structure.

4. The anti-dropping gasket according to claim 1, 2 or 3, characterized in that: The protruding structures are arranged continuously or discontinuously on the edges of the inner hole.

5. The anti-drop gasket according to claim 1, characterized in that: A circular pit is processed in the center of the gasket body, and the inner hole of the gasket body is set at the bottom of the circular pit. The shape of the inner hole of the gasket body is a polygon consistent with the nut shape of the foundation bolt. The diameter of the circumscribed circle of the polygonal inner hole is equal to the diameter of the bottom of the circular pit. The edge of the inner hole of the gasket body is higher than the upper plane of the gasket body to form a convex structure with an upper polygonal hole and a lower conical hole.

6. The anti-drop gasket according to claim 5, characterized in that: The conical hole is small at the top and large at the bottom. The wall surface is smoothly arranged with a small arc from top to bottom.

7. The anti-dropping gasket according to claim 1, characterized in that: The connection structure includes a connection structure provided on the gasket itself The outer edge of the annular convex wall or the annular convex wall near the outer edge, the outer wall surface of the annular convex wall is provided with a tooth structure, the tooth structure is connected to the outer edge of the annular convex wall. The toothed structure arranged on the inner wall of the mouth of the protective cover works in coordination.

8. The anti-dropping gasket according to claim 1, characterized in that: The connection structure includes a connection structure provided on the gasket itself The spring sheet is located at or near the outer edge of the gasket body, and the spring sheet protrudes toward one side of the gasket body; the spring sheet elastically adheres to the gasket body. The spring sheet is fitted on the outer edge of the mouth of the protective cover; there are one or more spring sheets.

9. The anti-dropping gasket according to claim 8, characterized in that: The outer shape of the shrapnel is any shape.

10. The anti-drop gasket according to claim 9, characterized in that: The spring piece is in an "S" shape and elastically fits on the outer edge of the mouth of the protective cover.

11. The anti-dropping gasket according to claim 1, 2, 3, 5, 6, 7, 8, 9 or 10, characterized in that: The anti-dropping gasket is an integral structure or a split structure.

12. The anti-drop gasket according to claim 11, characterized in that: The split anti-drop gasket consists of two halves The split structure is composed of a split structure or a combination of two or more split structures; the split structures are respectively provided with a clamping joint and a clamping groove, and the corresponding clamping joints and clamping grooves are matched and clamped together to combine the split structure into a whole.

13. The anti-dropping gasket according to claim 12, characterized in that: The front end of the card connector is wedge-shaped.

14. The anti-dropping gasket according to claim 12 or 13, characterized in that: The split structure is also provided with positioning holes and positioning pins, respectively, and the corresponding positioning holes and positioning pins are plugged together to strengthen the stability of the split structure anti-dropping gasket. Solidity.

15. The anti-dropping gasket according to claim 14, characterized in that: The positioning holes and positioning pins are respectively arranged on On the butt end faces where the split structures are connected.

16. The anti-drop gasket according to any one of claims 1 to 15, characterized in that: The anti-dropping gasket is made of metal or Made of non-metallic materials.

17. The anti-dropping gasket according to any one of claims 1 to 15, characterized in that: The anti-dropping gasket is made of plastic or Made of nylon or modified materials.

18. A foundation bolt anti-corrosion protection device, comprising a protective cover, characterized in that: It also includes the anti-slip gasket described in any one of claims 1 to 17.

19. The foundation bolt anti-corrosion protection device according to claim 18, characterized in that: The protective cover comprises a sleeve body The sleeve body has an opening at one end for the screw and nut of the foundation bolt to extend into, and the other end is connected to one end of the sleeve rod. The inner diameter of the sleeve rod is smaller than the inner diameter of the sleeve body and is used for inserting the screw rod. The other end of the sleeve rod is closed.

20. The foundation bolt anti-corrosion protection device according to claim 19, characterized in that: The sleeve rod is provided with The internal thread meshes with the thread of the screw.

21. The foundation bolt anti-corrosion protection device according to claim 19, characterized in that: The sleeve opening has an outer Expanded mouth.

22. The foundation bolt anti-corrosion protection device according to claim 19 or 21, characterized in that: An annular groove for applying glue is arranged on the bottom surface of the sleeve opening.

23. The foundation bolt anti-corrosion protection device according to claim 19, characterized in that: The sleeve body and the sleeve rod A reinforcing rib structure is provided.

24. The foundation bolt anti-corrosion protection device according to claim 19, characterized in that: The sleeve body and the sleeve rod A prism-shaped or approximately prism-shaped gripping portion is provided.

25. The foundation bolt anti-corrosion protection device according to claim 19, characterized in that: The casing and / or The outer surface of the sleeve rod is provided with anti-skid protrusions or anti-skid patterns.

26. The foundation bolt anti-corrosion protection device according to claim 19, characterized in that: The casing and / or The outer shape structure of the sleeve rod is an arbitrary geometric structure or a combined structure of arbitrary geometric structures.

27. The foundation bolt anti-corrosion protection device according to claim 26, characterized in that: The casing and / or The outer shape structure of the sleeve rod is a cylindrical structure, or a cylindrical structure or a prism structure whose generatrix is ​​a curve, or a prism structure or a truncated cone structure or a prism structure whose side surface is a curved surface.

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