Anti-crushing flange face bolt

Abstract

The utility model discloses an anti-crushing flange face bolt, and particularly relates to the technical field of flange face bolts, which comprises a hexagonal end head, a basic flange piece is fixedly arranged on one end face of the hexagonal end head, a bolt rod body is fixedly connected to the outer wall of the middle of the basic flange piece, and a hexagonal groove body is arranged in the middle of the bolt rod body. A splicing flange piece is connected to the position, located on one side of the foundation flange piece, of the outer portion of the bolt rod body in a sleeving mode, an annular clamping block is arranged on the side, close to the foundation flange piece, of the outer wall of the splicing flange piece, and an annular clamping groove matched with the annular clamping block in position is formed in the outer wall of the foundation flange piece. And rubber backing rings are arranged on the outer surfaces, close to the outer sides of the annular clamping blocks, of the splicing flange pieces. When the flange face bolt is used, the problem that the bolt rod body on the flange face bolt is broken in the nut and cannot be taken out due to large torsion can be effectively avoided, discarding waste caused by the fact that the bolt rod body cannot be taken down is reduced, and the crushing problem caused by stress extrusion is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flange surface bolts, and more specifically, to an anti-crushing flange surface bolt. Background Art

[0002] Flange bolts, as a widely used fastener, play a vital role in the industrial field, especially in the connection of pipelines and equipment. However, traditional flange bolts often face the following problems during the tightening process: First, during the tightening process of the bolts, when the flange surface contacts the surface of the connected part, as the tightening torque increases, the flange surface gradually changes from line contact at the outer edge to surface contact, and elastic deformation occurs at the same time. During this deformation process, the outer edge of the flange surface will scrape and press the surface of the connected part, resulting in scratches, crushing and uneven friction surface. This not only affects the appearance of the connection, but may also reduce the reliability and sealing of the connection; secondly, although the elastic deformation of the flange surface can play a role in preventing loosening to a certain extent, this anti-loosening effect may not be sufficient to ensure the stability of the connection under long-term use or vibration environment. Loosening will not only cause sealing failure, but may also cause more serious safety accidents.

[0003] To this end, after searching, a Chinese patent with announcement number CN210484357U discloses an anti-crush flange face bolt, which belongs to the field of fasteners. The technical effect of this technology is that it will not crush or scratch the surface of the connected parts, has a stronger clamping force, and is not easy to loosen.

[0004] Although the above patent has achieved the corresponding anti-crushing effect when used, there are still some structural design deficiencies in actual use. For example, when the bolt rod on the flange bolt is subjected to a large torque during use and breaks inside the nut, the broken screw part inside the nut is very difficult to remove, which will cause the broken screw part to be discarded together with the nut, resulting in waste. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an anti-crush flange face bolt.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-crush flange face bolt, comprising a hexagonal end head, one end face of the hexagonal end head is fixedly provided with a basic flange plate, the middle outer wall of the basic flange plate is fixedly connected with a bolt rod body, the middle part of the bolt rod body is provided with a hexagonal groove body, and the outside of the bolt rod body is located on one side of the basic flange plate and is sleeved with a splicing flange plate, the outer wall of the splicing flange plate is provided with an annular clamping block near the side where the basic flange plate is located, the outer wall of the basic flange plate is provided with an annular clamping groove matching the position of the annular clamping block, and the outer surface of the splicing flange plate is provided with a rubber gasket near the outside of the annular clamping block.

[0007] As a further improvement of the technical solution of the utility model, the outer surface of one end of the bolt rod body is smooth on the side close to the base flange, and the outer surface of the other end of the bolt rod body is provided with an external thread on the side away from the base flange.

[0008] As a further improvement of the technical solution of the utility model, a through hole for the bolt rod to pass through is arranged inside the splicing flange, and the inner diameter of the cross section of the through hole is larger than the outer diameter of the cross section of the bolt rod.

[0009] As a further improvement of the technical solution of the utility model, the rubber gasket is fixed to the outer surface of the splicing flange by glue.

[0010] As a further improvement of the technical solution of the utility model, the height of the annular clamping block is smaller than the depth of the annular clamping groove.

[0011] As a further improvement of the technical solution of the utility model, the cross-sectional outer diameter of the spliced ​​flange is larger than the cross-sectional outer diameter of the basic flange.

[0012] As a further improvement of the technical solution of the utility model, the connection between the bolt rod body and the hexagonal end and the base flange is welding.

[0013] Beneficial effects of the utility model:

[0014] 1. By setting a hexagonal groove in the middle of the bolt rod, it can not only save materials during manufacturing, but also effectively avoid the problem that the bolt rod on the flange bolt is broken inside the nut due to a large torque during use and cannot be removed. When a break occurs, the operator can use a hexagonal tool to reach into the inside of the hexagonal groove to remove the screw part that is broken inside the nut, thereby reducing the waste caused by the inability to remove it;

[0015] 2. By setting a splicing flange, the splicing flange utilizes the matching of the annular clamping block and the annular clamping groove to maintain the stability between the splicing flange and the basic flange when the flange surface bolts are installed, and there will be no deviation caused by tightening. A rubber gasket is set on the outer surface of the splicing flange, which can play a buffering effect when tightening and reduce the crushing problem caused by force extrusion. At the same time, the splicing flange is removable and replaceable. By adding splicing flanges of different sizes, an installation sealing effect can be achieved according to the needs of the installation position during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2It is a schematic diagram of the disassembly structure of the spliced ​​flange and the basic flange in the utility model.

[0018] Figure 3 It is a schematic diagram of the structure after the splicing flange in the utility model is removed.

[0019] Figure 4 It is a structural schematic diagram of the spliced ​​flange in the utility model.

[0020] The figures are marked as follows: 1. hexagonal end; 2. bolt rod; 3. basic flange; 4. splicing flange; 5. rubber gasket; 6. annular clamping block; 7. annular clamping groove; 8. hexagonal groove body; 9. through hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As attached Figure 1-4 The anti-crush flange face bolt shown includes a hexagonal end 1, one end face of which is fixedly provided with a basic flange plate 3, the middle outer wall of the basic flange plate 3 is fixedly connected with a bolt rod body 2, the middle part of the bolt rod body 2 is provided with a hexagonal groove body 8, and the outside of the bolt rod body 2 is located on one side of the basic flange plate 3 and is sleeved with a splicing flange plate 4, the outer wall of the splicing flange plate 4 is close to the side where the basic flange plate 3 is located, the outer wall of the splicing flange plate 4 is provided with an annular clamping block 6 near the side where the basic flange plate 3 is located, the outer wall of the basic flange plate 3 is provided with an annular clamping groove 7 matching the position of the annular clamping block 6, and the outer surface of the splicing flange plate 4 is provided with a rubber gasket 5 near the outer side of the annular clamping block 6.

[0023] As attached Figure 1-3 As shown, the outer surface of one end of the bolt rod 2 is smooth on the side close to the base flange 3, and the outer surface of the other end of the bolt rod 2 is provided with an external thread on the side away from the base flange 3, which is convenient for connecting the bolt rod 2 on the flange surface bolt with the outside when in use.

[0024] As attached Figure 2 and attached Figure 4 As shown, a through hole 9 for the bolt rod 2 to pass through is provided inside the splicing flange 4, and the inner diameter of the cross section of the through hole 9 is larger than the outer diameter of the cross section of the bolt rod 2, so that the splicing flange 4 can be stably sleeved on the outside of the bolt rod 2.

[0025] As attached Figure 2 and attached Figure 4As shown, the rubber gasket 5 is bonded and fixed to the outer surface of the splicing flange 4 by glue, which facilitates the connection and fixation between the rubber gasket 5 and the splicing flange 4.

[0026] As attached Figure 2-4 As shown, the height of the annular block 6 is smaller than the depth of the annular groove 7, so that the annular block 6 can be fully inserted into the annular groove 7, thereby maintaining stability between the spliced ​​flange 4 and the basic flange 3 after the flange surface bolts are installed, and no deviation due to tightening will occur.

[0027] As attached Figure 1-2 As shown, the cross-sectional outer diameter of the splicing flange 4 is greater than the cross-sectional outer diameter of the basic flange 3 .

[0028] As attached Figure 1-2 As shown, the connection between the bolt shank 2 and the hexagonal end 1 and the base flange 3 is welding.

[0029] Working principle: This utility model is designed with an anti-collapse flange bolt. The specific structure is as shown in the attached manual. Figure 1-4 As shown, in the present technical solution, firstly, by providing a hexagonal groove 8 in the middle of the bolt rod 2, it is possible to save materials during manufacturing and effectively avoid the problem that the bolt rod 2 on the flange surface bolt is broken inside the nut due to a large torsional force and cannot be removed during use. When a break occurs, the operator can use a hexagonal tool to reach into the inside of the hexagonal groove 8, thereby removing the screw part that is broken inside the nut, reducing the waste caused by the inability to remove it; secondly, the present technical solution also adds a splicing flange 4, which The splicing flange 4 utilizes the matching of the annular clamping block 6 and the annular clamping groove 7 to maintain the stability between the splicing flange 4 and the basic flange 3 when the flange surface bolts are installed, and there will be no deviation caused by tightening. A rubber gasket 5 is arranged on the outer surface of the splicing flange 4, which can play a buffering effect when tightening and reduce the crushing problem caused by force extrusion. At the same time, the splicing flange 4 is removable and replaceable. By adding splicing flanges 4 of different sizes, an installation sealing effect can be achieved according to the needs of the installation position during use.

[0030] Among them, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0031] Finally: 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, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An anti-crush flange bolt, comprising a hexagonal end (1), one end surface of the hexagonal end (1) being fixedly provided with a base flange (3), a bolt rod (2) being fixedly connected to the middle outer wall of the base flange (3), characterized in that: A hexagonal groove (8) is provided in the middle of the bolt rod (2), and a splicing flange (4) is sleeved on the outside of the bolt rod (2) on one side of the basic flange (3), an annular clamping block (6) is provided on the outer wall of the splicing flange (4) close to the side where the basic flange (3) is located, an annular clamping groove (7) matching the position of the annular clamping block (6) is provided on the outer wall of the basic flange (3), and a rubber gasket (5) is provided on the outer surface of the splicing flange (4) close to the outer side of the annular clamping block (6).

2. The anti-collapse flange bolt according to claim 1, characterized in that: The outer surface of one end of the bolt rod (2) is a smooth surface on the side close to the base flange (3), and the outer surface of the other end of the bolt rod (2) is provided with an external thread on the side away from the base flange (3).

3. The anti-collapse flange bolt according to claim 1, characterized in that: A through hole (9) for the bolt shank (2) to pass through is provided inside the splicing flange (4), and the inner diameter of the cross section of the through hole (9) is greater than the outer diameter of the cross section of the bolt shank (2).

4. The anti-collapse flange bolt according to claim 1, characterized in that: The rubber gasket (5) is bonded and fixed to the outer surface of the splicing flange (4) by glue.

5. The anti-collapse flange bolt according to claim 1, characterized in that: The height of the annular clamping block (6) is smaller than the depth of the annular clamping groove (7).

6. The anti-collapse flange bolt according to claim 1, characterized in that: The cross-sectional outer diameter of the spliced ​​flange (4) is greater than the cross-sectional outer diameter of the basic flange (3).

7. The anti-collapse flange bolt according to claim 1, characterized in that: The connection between the bolt rod (2) and the hexagonal end (1) and the base flange (3) is achieved by welding.

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