Bolt anti-corrosion protective cover structure

Abstract

The utility model discloses a bolt anti-corrosion protective cover structure which comprises a protective cover and a fixing ring, a third cavity for containing a gasket, a second cavity for containing a nut and a first cavity for containing the end of a screw are sequentially arranged in the protective cover from bottom to top, and the third cavity, the second cavity and the first cavity are sequentially communicated. And internal threads are arranged on the inner side walls of the first chamber and the second chamber. The protective cover is reasonable in design, through the design of the protective cover and the fixing ring, the exposed end portions of the gasket, the nut and the screw rod can be completely covered so as to reduce erosion damage to the nut and the screw rod section caused by external humid air, rain and snow and the like, and the protective cover is easy to install and convenient to popularize.

Description

A bolt corrosion protection cover structure Technical Field

[0001] This utility model relates to the field of bolt protection technology, and in particular to a bolt anti-corrosion protective cover structure. Background Technology

[0002] Bolts, as a common connecting component, are widely used to connect two parts. Segment bolts are an important component for connecting subway tunnel segments, allowing the segments to be tightly connected to form a complete tunnel structure. Existing segment bolts come in two forms, as shown in Figures 6 and 7. In Figure 6, one end of the bolt 15 is fixedly connected to a hexagonal plate 12, and the other end is connected to a nut 14 via threads to form a fastener. Typically, the end of the bolt 15 slightly protrudes from the nut 14, and a washer 13 is placed below the nut 14. In Figure 7, both ends of the bolt 15 are threadedly connected to nuts 14.

[0003] When using segment bolts, the hexagonal plate 12, nut 14 and washer 13 are generally located on the outside of the connected parts, which are easily corroded by humid air or even rain and snow, making them easy to rust together and difficult to disassemble, thus affecting the disassembly and assembly of the parts. Summary of the Invention

[0004] This utility model provides a bolt anti-corrosion protective cover structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bolt corrosion protection cover structure includes a protective cover and a fixing ring. The protective cover has a third chamber for accommodating a gasket, a second chamber for accommodating a nut, and a first chamber for accommodating the end of a bolt, arranged sequentially from bottom to top. The third chamber, the second chamber, and the first chamber are connected in sequence. The inner sidewalls of the first chamber and the second chamber are provided with internal threads.

[0007] The outer side of the fixing ring is provided with external threads, and the fixing ring is threadedly connected to the second chamber. The bottom of the fixing ring is provided with a hexagonal hole. Six limiting plates are fixedly connected to the inner side wall of the fixing ring. The six limiting plates are arranged in a ring array. A notch is provided on one side of the fixing ring. Two reinforcing ribs are fixedly connected to the inner side wall of the limiting plates.

[0008] Preferably, a rubber layer is fixedly connected to the side wall of each of the limiting plates, and the surface of the rubber layer is provided with dense hemispherical protrusions.

[0009] Preferably, the outer wall of the protective cover is fixedly connected with a plurality of protruding pillars, and the plurality of protruding pillars are arranged in a ring array.

[0010] Preferably, the protruding column is a semi-cylinder extending longitudinally along the outer wall of the second cavity.

[0011] Preferably, the protective cover and the protruding post are integrally formed.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The device is reasonably designed. By designing a protective cover and a fixing ring, it can completely cover the exposed gaskets, nuts and screw ends, thereby reducing the corrosion and damage to the nuts and screw sections caused by external humid air, rain and snow. It is also simple to install and easy to promote.

[0014] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 is a structural schematic diagram of a bolt anti-corrosion protective cover structure proposed in this utility model;

[0017] Figure 2 is a schematic diagram of the bottom structure of the protective cover proposed in this utility model;

[0018] Figure 3 is a schematic diagram of the front cross-sectional structure of the protective cover proposed in this utility model;

[0019] Figure 4 is a schematic diagram of the fixed ring structure proposed in this utility model;

[0020] Figure 5 is a partial enlarged structural diagram of A in Figure 4;

[0021] Figure 6 is a schematic diagram of the structure of a single-nut segment bolt in the prior art;

[0022] Figure 7 is a schematic diagram of the structure of a double-nut segment bolt in the prior art.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Protective cover; 2. Protruding column; 3. Notch; 4. Hexagonal hole; 5. Reinforcing rib; 6. Limiting plate; 7. Fixing ring; 8. Rubber layer; 9. First chamber; 10. Second chamber; 11. Third chamber; 12. Hexagonal plate; 13. Washer; 14. Nut; 15. Screw. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described in more detail below by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0026] Please refer to Figures 1 to 5. In this embodiment of the present invention, a bolt anti-corrosion protective cover structure includes a protective cover 1 and a fixing ring 7, both made of corrosion-resistant plastic. Inside the protective cover 1, from bottom to top, there are a third chamber 11 for accommodating a washer, a second chamber 10 for accommodating a nut, and a first chamber 9 for accommodating the end of a screw. The third chamber 11, the second chamber 10, and the first chamber 9 are connected in sequence. The inner sidewalls of the first chamber 9 and the second chamber 10 are both provided with internal threads. The diameters of the third chamber 11 and the second chamber 10 are larger than the diameters of the washer 13 and the nut 14, respectively. The diameter of the first chamber 9 is adapted to the diameter of the screw 15, and the screw 15 can be threaded into the first chamber 9.

[0027] Specifically, the outer wall of the protective cover 1 is fixedly connected with multiple protruding pillars 2, which are arranged in a ring array. The protruding pillars 2 are semi-cylinders extending longitudinally along the outer wall of the second chamber 10. The protective cover 1 and the protruding pillars 2 are integrally formed. The multiple protruding pillars 2 can improve the surface friction of the protective cover 1, making it easier to rotate the protective cover 1.

[0028] The outer side of the fixing ring 7 is provided with external threads. The diameter of the fixing ring 7 is adapted to the diameter of the second chamber 10. The fixing ring 7 is threadedly connected to the second chamber 10. The bottom of the fixing ring 7 is provided with a hexagonal hole 4. Six limiting plates 6 are fixedly connected to the inner side wall of the fixing ring 7. The six limiting plates 6 are arranged in a ring array. A notch 3 is provided on one side of the fixing ring 7. Two reinforcing ribs 5 are fixedly connected to the inner side wall of the limiting plate 6. The reinforcing ribs 5 are made of stainless steel and are C-shaped. The reinforcing ribs 5 can not only improve the elastic clamping force of the fixing ring 7, but also reduce the deformation fatigue damage after the fixing ring 7 is opened.

[0029] Specifically, a rubber layer 8 is fixedly connected to the side wall of each limiting plate 6. The surface of the rubber layer 8 is provided with dense hemispherical protrusions. The rubber layer 8 and the spherical protrusions on the surface can increase the friction with the side of the nut 14.

[0030] The working principle of this utility model is as follows:

[0031] When the end of the screw 15 extends slightly beyond the nut 14, and protection is needed for the nut 14 and the washer 13 below it, the third chamber 11 and the second chamber 10 of the protective cover 1 can be directly used to cover the washer 13 and the nut 14 respectively. Then, the end of the screw 15 extending beyond the nut 14 is threadedly connected to the inner side of the first chamber 9, so that the protective cover 1 is fixed to the end of the screw 15, which can effectively prevent the nut 14 and the washer 13 from being corroded by humid air or even rain and snow.

[0032] When the end of the screw 15 does not extend beyond the nut 14, and protection is needed for the nut 14 and its underlying washer 13, or for the hexagonal plate 12, the internal space of the retaining ring 7 is first expanded by enlarging the notch 3. After the retaining ring 7 covers the outer wall of the nut 14 or the hexagonal plate 12, the retaining ring 7 is loosened. After the retaining ring 7 recovers due to the elastic contraction of the reinforcing rib 5, the retaining ring 7 can abut against the outer wall of the nut 14 or the hexagonal plate 12. The six limiting plates 6 on the inner wall of the retaining ring 7 will respectively engage with the six sides of the nut 14 or the hexagonal plate 12, so that the retaining ring 7 is fixed on the nut 14 or the hexagonal plate 12. Then, the protective cover 1 is covered over the retaining ring 7, and the retaining ring 7 is screwed into the second chamber 10, so that the protective cover 1 is fixed on the outside of the retaining ring 7. The protective cover 1 can then protect the nut 14 or the hexagonal plate 12 from corrosion by humid air, rain, snow, etc.

[0033] It should be noted that the protective cover 1 can also be designed so that only the first chamber 9 has threads and only the second chamber 10 has threads, which are respectively suitable for the cases where the end of the screw 15 slightly protrudes from the nut 14 and the cases where the end of the screw 15 does not protrude from the nut 14.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A bolt corrosion protection cover structure, comprising a protective cover (1) and a fixing ring (7), characterized in that, The protective cover (1) has a third chamber (11) for accommodating a gasket, a second chamber (10) for accommodating a nut, and a first chamber (9) for accommodating the end of a screw, arranged sequentially from bottom to top. The third chamber (11), the second chamber (10), and the first chamber (9) are connected in sequence. The inner walls of the first chamber (9) and the second chamber (10) are provided with internal threads. The outer side of the fixing ring (7) is provided with external threads. The fixing ring (7) is threaded into the second chamber (10). The bottom of the fixing ring (7) is provided with a hexagonal hole (4). The inner wall of the fixing ring (7) is fixedly connected with six limiting plates (6). The six limiting plates (6) are arranged in a ring array. A notch (3) is provided on one side of the fixing ring (7). Two reinforcing ribs (5) are fixedly connected to the inner wall of the limiting plate (6).

2. The bolt anti-corrosion protective cover structure according to claim 1, characterized in that, A rubber layer (8) is fixedly connected to the side wall of each of the limiting plates (6), and the surface of the rubber layer (8) is provided with dense hemispherical protrusions.

3. The bolt anti-corrosion protective cover structure according to claim 2, characterized in that, The outer wall of the protective cover (1) is fixedly connected with a plurality of protruding columns (2), and the plurality of protruding columns (2) are arranged in a ring array.

4. The bolt anti-corrosion protective cover structure according to claim 3, characterized in that, The protruding column (2) is a semi-cylinder extending longitudinally along the outer wall of the second chamber (10).

5. The bolt anti-corrosion protective cover structure according to claim 4, characterized in that, The protective cover (1) and the protruding column (2) are integrally formed.

Images