Flange face bolt capable of preventing looseness

Abstract

The utility model discloses an anti-loosening flange face bolt, and relates to the technical field of mechanical engineering. An anti-loosening flange face bolt comprises a first bolt head, a first bolt rod is fixedly connected to the lower surface of the first bolt head, a second bolt rod groove is formed in the lower end of the first bolt rod, an anti-loosening pad is fixedly connected to the lower surface of the first bolt head, and a second fixed bolt rod groove is formed in the second bolt rod groove; a limiting device is arranged below the first bolt head, one end of a second bolt rod is inserted into a second bolt rod groove through the limiting device, a fixed bolt rod is inserted into a fixed bolt rod groove, and then the fixed bolt rod is rotated to be in threaded connection with the interior of the second fixed bolt rod groove, so that the length of the bolt rod is adjusted; and the situation that bolts need to be replaced due to the fact that the length is not adjustable during installation is avoided, meanwhile, the practicability and effectiveness of equipment are greatly improved, and the installation efficiency of workers is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a flange surface bolt capable of preventing loosening. Background Art

[0002] In the industrial production process, flanges are usually connected together using flange nuts to ensure the sealing of industrial production equipment. The Chinese utility model patent, authorization announcement number "CN219932691U", discloses an anti-loosening flange nut, wherein the bolt is threadedly connected to the inner end of the flange nut body, the first anti-loosening mechanism is located at the cushion of the flange nut body, the second anti-loosening mechanism is located at the outer end of the bolt, and the third anti-loosening mechanism is located at the outer end of the second anti-loosening mechanism. The anti-loosening flange nut is provided with a second anti-loosening mechanism. After the flange nut body is tightened, the outer anti-loosening ring is rotated so that the outer thread and the inner thread are tightened, thereby improving the firmness of the connection between the flange nut body and the bolt, and preventing the flange nut body and the bolt from loosening.

[0003] The above technical solution is to tighten the flange nut body and then rotate the rotating ring, so that the rotating ring drives the outer anti-loosening ring to move to the right, so that the external thread and the internal thread are tightened, and the first magnetic ring will fit together with the second magnetic ring. The magnetic attraction between the first magnetic ring and the second magnetic ring can further prevent the flange nut from loosening. However, the above technical solution still has certain defects. For example, when the above-mentioned equipment uses the flange nut body to install the equipment, because the bolt length of the flange nut body is fixed, the length of the screw cannot be selected according to actual needs, which greatly increases the cost of equipment installation and reduces the practicality of the flange nut body. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a flange bolt that can prevent loosening. The utility model can solve the problem that when a device is installed using a flange nut body, the bolt length of the flange nut body is fixed and the length of the screw cannot be selected according to actual needs, which greatly increases the cost of equipment installation and reduces the practicality of the flange nut body.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solutions: a flange face bolt capable of preventing loosening, comprising a first bolt head, a lower surface of which is fixedly connected to a first bolt rod;

[0006] Wherein, a second bolt rod groove is formed at the lower end of the first bolt rod;

[0007] Wherein, an anti-loosening pad is fixedly connected to the lower surface of the first bolt head;

[0008] Wherein, a second fixing bolt rod groove is provided inside the second bolt rod groove;

[0009] Wherein, a limiting device is arranged below the first bolt head.

[0010] Preferably, the limiting device comprises a second bolt rod, the second bolt rod is slidably connected to the inside of the second bolt rod groove, and the outer wall of the second bolt rod is threadedly connected to a second bolt head;

[0011] Wherein, a first sealing ring is provided inside the lower end of the second bolt head.

[0012] Preferably, a first sealing ring is fixedly connected inside the first sealing ring;

[0013] Wherein, a fixing bolt rod groove is provided at the lower end of the second bolt rod;

[0014] Wherein, the interior of the fixing bolt rod groove is slidably connected with a fixing bolt rod.

[0015] Preferably, one end of the fixing bolt rod close to the second fixing bolt rod groove is connected to the inner thread of the second fixing bolt rod groove;

[0016] Wherein, the upper surface of the second bolt head is fixedly connected with a similar anti-loosening pad;

[0017] Wherein, a second sealing ring groove is opened inside the lower end of the fixing bolt rod.

[0018] Preferably, a second sealing ring is fixedly connected inside the second sealing ring groove;

[0019] Wherein, one end of the second bolt rod close to the first bolt rod is internally slidably connected with two positioning blocks;

[0020] Wherein, two positioning block grooves are arranged inside the second bolt rod groove.

[0021] Preferably, one end of the two positioning blocks close to the positioning block grooves is in contact with the inner wall of the corresponding positioning block grooves respectively;

[0022] Wherein, two return springs are fixedly connected inside one end of the second bolt rod close to the first bolt rod;

[0023] Wherein, one end of the two return springs close to the positioning block is fixedly connected to one end of the corresponding positioning block respectively.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] (1) The anti-loosening flange face bolt inserts one end of the second bolt rod into the second bolt rod groove through the limiting device, and the positioning block contacts the inner wall of the positioning block groove to position the second bolt rod to prevent the second bolt rod from deviating. The fixing bolt rod is inserted into the fixing bolt rod groove, and then the fixing bolt rod is rotated to connect with the internal thread of the second fixing bolt rod groove. In this way, the length of the bolt rod can be adjusted to avoid the need to replace the bolt due to length problems during installation. At the same time, the practicability and effectiveness of the equipment are greatly improved, and the installation efficiency of the staff is effectively improved.

[0026] (2) The anti-loosening flange bolt is prevented from loosening after installation by means of an anti-loosening pad fixedly connected to the first bolt head and the second bolt head. Then, the second bolt head and the outer wall of the first bolt rod are made more stable and less likely to loosen by means of the first sealing ring, thereby greatly improving the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the exterior of the fixing bolt rod of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure inside the second bolt head of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure inside the second bolt rod of the utility model;

[0032] Figure 5 It is a schematic diagram of the structure inside the first bolt rod of the utility model.

[0033] Figure numerals: 1. first bolt head; 2. anti-loosening pad; 3. second bolt rod; 4. second bolt head; 5. first bolt rod; 6. fixing bolt rod; 7. fixing bolt rod groove; 8. first sealing ring; 9. first sealing ring groove; 10. second sealing ring groove; 11. second sealing ring; 12. second bolt rod groove; 13. positioning block; 14. positioning block groove; 15. return spring; 16. second fixing bolt rod groove. DETAILED DESCRIPTION

[0034] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] See also Figure 1-5 The utility model provides a technical solution: a flange bolt that can prevent loosening, comprising a first bolt head 1, a first bolt rod 5 is fixedly connected to the lower surface of the first bolt head 1, a second bolt rod groove 12 is opened at the lower end of the first bolt rod 5, an anti-loosening pad 2 is fixedly connected to the lower surface of the first bolt head 1, a second fixing bolt rod groove 16 is opened inside the second bolt rod groove 12, and a limiting device is arranged below the first bolt head 1.

[0039] The limiting device comprises a second bolt rod 3, which is slidably connected to the inside of the second bolt rod groove 12, and the outer wall of the second bolt rod 3 is threadedly connected to a second bolt head 4, and a first sealing ring groove 9 is opened inside the lower end of the second bolt head 4.

[0040] The first sealing ring groove 9 has a first sealing ring 8 fixedly connected therein, the lower end of the second bolt rod 3 has a fixing bolt rod groove 7, and the fixing bolt rod 6 is slidably connected therein.

[0041] Among them, one end of the fixing bolt rod 6 close to the second fixing bolt rod groove 16 is connected to the internal thread of the second fixing bolt rod groove 16, the upper surface of the second bolt head 4 is fixedly connected with the same anti-loosening pad 2, and a second sealing ring groove 10 is opened inside the lower end of the fixing bolt rod 6.

[0042] The second sealing ring groove 10 is fixedly connected with a second sealing ring 11 , the second bolt rod 3 close to the first bolt rod 5 has two positioning blocks 13 slidably connected therein, and the second bolt rod groove 12 has two positioning block grooves 14 .

[0043] Among them, one end of the two positioning blocks 13 close to the positioning block groove 14 is in contact with the inner wall of the corresponding positioning block groove 14 respectively, and the inside of one end of the second bolt rod 3 close to the first bolt rod 5 is fixedly connected with two return springs 15, and one end of the two return springs 15 close to the positioning block 13 is fixedly connected with one end of the corresponding positioning block 13 respectively.

[0044] Furthermore, when using the device, according to the length of the bolt rod required by the equipment, one end of the second bolt rod 3 is inserted into the second bolt rod groove 12 opened on the first bolt rod 5, and then the positioning block 13 slidingly connected on the second bolt rod 3 contacts the inner wall of the positioning block groove 14 opened inside the second bolt rod groove 12, thereby positioning the second bolt rod 3.

[0045] Furthermore, to prevent the second bolt rod 3 from deviation, the fixing bolt rod 6 is inserted into the fixing bolt rod groove 7 opened on the second bolt rod 3, and then the fixing bolt rod 6 is rotated, so that the fixing bolt rod 6 is connected with the internal thread of the second fixing bolt rod groove 16, thereby fixing the second bolt rod 3. After adjusting the length of the bolt rod, the equipment can be installed.

[0046] The second bolt rod 3 is positioned by inserting one end of the second bolt rod 3 into the second bolt rod groove 12 through the limiting device, and the positioning block 13 contacts the inner wall of the positioning block groove 14 to position the second bolt rod 3 to prevent the second bolt rod 3 from deviation, and the fixing bolt rod 6 is inserted into the fixing bolt rod groove 7, and then the fixing bolt rod 6 is rotated to connect with the internal thread of the second fixing bolt rod groove 16, so that the length of the bolt rod can be adjusted, and the need to replace the bolt due to insufficient length during installation is avoided. At the same time, the practicability and effectiveness of the equipment are greatly improved, and the installation efficiency of the staff is effectively reduced. After the anti-loosening pad 2 fixedly connected to the first bolt head 1 and the second bolt head 4 is installed, the bolt is not easy to loosen, and then the second bolt head 4 and the outer wall of the first bolt rod 5 are made more stable and not easy to loosen through the first sealing ring 8, which greatly improves the stability of the equipment.

[0047] Working principle: According to the length of the bolt rod required by the equipment, one end of the second bolt rod 3 is inserted into the second bolt rod groove 12 opened on the first bolt rod 5, and then the positioning block 13 slidingly connected on the second bolt rod 3 contacts the inner wall of the positioning block groove 14 opened inside the second bolt rod groove 12, so as to position the second bolt rod 3 to prevent the second bolt rod 3 from deviation, and then the fixing bolt rod 6 is inserted into the fixing bolt rod groove 7 opened on the second bolt rod 3, and then the fixing bolt rod 6 is rotated, so that the fixing bolt rod 6 is connected to the internal thread of the second fixing bolt rod groove 16, so as to fix the second bolt rod 3, and then after adjusting the length of the bolt rod, the equipment can be installed.

[0048] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A flange bolt capable of preventing loosening, comprising a first bolt head (1), characterized in that: A first bolt rod (5) is fixedly connected to the lower surface of the first bolt head (1); Wherein, a second bolt rod groove (12) is formed at the lower end of the first bolt rod (5); Wherein, an anti-loosening pad (2) is fixedly connected to the lower surface of the first bolt head (1); Wherein, a second fixing bolt rod groove (16) is provided inside the second bolt rod groove (12); Wherein, a limiting device is arranged below the first bolt head (1).

2. The anti-loosening flange bolt according to claim 1, characterized in that: The limiting device comprises a second bolt rod (3), the second bolt rod (3) is slidably connected to the inside of the second bolt rod groove (12), and the outer wall of the second bolt rod (3) is threadedly connected to a second bolt head (4); A first sealing ring groove (9) is provided inside the lower end of the second bolt head (4).

3. The anti-loosening flange bolt according to claim 2, characterized in that: A first sealing ring (8) is fixedly connected inside the first sealing ring groove (9); Wherein, a fixing bolt rod groove (7) is provided at the lower end of the second bolt rod (3); The interior of the fixing bolt rod groove (7) is slidably connected with the fixing bolt rod (6).

4. The anti-loosening flange bolt according to claim 3, characterized in that: One end of the fixing bolt rod (6) close to the second fixing bolt rod groove (16) is connected to the internal thread of the second fixing bolt rod groove (16); Wherein, the upper surface of the second bolt head (4) is fixedly connected with a similar anti-loosening pad (2); A second sealing ring groove (10) is provided inside the lower end of the fixing bolt rod (6).

5. The anti-loosening flange bolt according to claim 4, characterized in that: A second sealing ring (11) is fixedly connected inside the second sealing ring groove (10); Wherein, two positioning blocks (13) are slidably connected inside one end of the second bolt rod (3) close to the first bolt rod (5); Two positioning block grooves (14) are provided inside the second bolt rod groove (12).

6. The anti-loosening flange bolt according to claim 5, characterized in that: One end of the two positioning blocks (13) close to the positioning block groove (14) is in contact with the inner wall of the corresponding positioning block groove (14); Wherein, two return springs (15) are fixedly connected inside one end of the second bolt rod (3) close to the first bolt rod (5); Wherein, one end of the two return springs (15) close to the positioning block (13) is fixedly connected to one end of the corresponding positioning block (13) respectively.

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