Unilateral fastening bolt for closed space and mounting method of unilateral fastening bolt

Abstract

The invention discloses a unilateral fastening bolt for a closed space and a mounting method of the unilateral fastening bolt, belongs to the technical field of bolt mounting, and solves the problems that the operation difficulty is high and the bolt is easy to rotate when the bolt is mounted in the closed space. The device specifically comprises a T-shaped bolt, wherein two sides of the T-shaped bolt are respectively and fixedly provided with two stop blocks; and the threaded end of the T-shaped bolt is connected with a fastening nut. According to the device, the two stop blocks are arranged on the two sides of the T-shaped bolt to limit the T-shaped bolt and prevent the T-shaped bolt from rotating; and meanwhile, after the two stop blocks are embedded into the mounting hole of the T-shaped bolt, the space around the T-shaped bolt and the mounting hole is filled, and the stability and reliability of a product after the T-shaped bolt is fastened can be effectively improved. The rotation stopping bodies are arranged on the two sides of the T-shaped head of the T-shaped bolt and used for stopping the T-shaped head of the T-shaped bolt from rotating. A filling body is connected to the inner side of the rotation resisting body and used for filling the space around a screw of the T-shaped bolt; and a flanging body is arranged at the end part of the rotation resisting body and can play a role of a gasket.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt installation, and particularly to a one-sided fastening bolt for a confined space and an installation method thereof. Background Art

[0002] In the preparation process of ceramic matrix composite products, most of them belong to the skin-skeleton structure in order to obtain products with light weight and excellent performance; so most of the internal structures of the products after preparation are confined space structures. Since ceramic matrix composites need to be subjected to chemical vapor deposition treatment in a high-temperature furnace during the preparation process, some components of other materials that need to be subsequently connected to the products cannot be connected to the products during the preparation process of ceramic matrix composite products, and need to be connected and installed using bolts and other connectors after the ceramic matrix composite products are formed.

[0003] In the previous connection structures, one method is the two-hole design, that is, two holes are opened in the confined space, one hole is used to insert the bolt, and the other hole is used for bolt fastening. This method has many holes and great installation difficulty. Another method is to use a T-shaped bolt for connection, but during the connection process of the T-shaped bolt, the bolt is prone to rotation and is likely to fall into the confined space if the operation is inappropriate; and the position is prone to shift after fastening, resulting in poor stability. Therefore, the present invention provides a one-sided fastening bolt for a confined space, which can realize one-sided fastening, filling and anti-rotation in the confined space during bolt connection. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides a one-sided fastening bolt for a confined space and an installation method thereof, which solves the problems of great operation difficulty and easy rotation of the bolt when installing the bolt in the confined space.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A one-sided fastening bolt for a confined space includes a T-shaped bolt, and two stop blocks are respectively fixed on both sides of the T-shaped bolt; a fastening nut is connected to the threaded end of the T-shaped bolt.

[0007] In this solution, the two stop blocks are arranged on both sides of the T-shaped bolt to limit the T-shaped bolt and prevent it from rotating; at the same time, after the two stop blocks are embedded into the installation hole of the T-shaped bolt, the space around the T-shaped bolt and the installation hole is filled, which can effectively improve the stability and reliability of the product after the T-shaped bolt is fastened.

[0008] Further, the stop block includes a rotation-resistant body, and the rotation-resistant body is arranged on both sides of the T-shaped head of the T-shaped bolt; a filling body is connected to the inner side of the rotation-resistant body, and the filling body fills around the screw rod of the T-shaped bolt; a flanging body is arranged at the end of the rotation-resistant body, and one side of the fastening nut abuts against the flanging body.

[0009] In this solution, two anti-rotation bodies are used to prevent the T-shaped head of the T-bolt from rotating, and two filling bodies are used to fill the space around the screw rod of the T-bolt; the flanging body can act as a gasket to increase the contact area with the fastening nut, reduce the pressure, and play a role in protecting the parts.

[0010] Furthermore, at one end of the T-bolt away from the T-shaped head, there is a bundling head, and a bundling groove is opened on the bundling head, and a pulling wire is bundled in the bundling groove.

[0011] In this solution, after the T-bolt is inserted into the mounting hole, it can be pulled by the pulling wire, the fastening nut is inserted through the head of the pulling wire, and the fastening nut is screwed onto the T-bolt; the design of the pulling wire can prevent the T-bolt from falling into the enclosed space.

[0012] Furthermore, the diameter of the bundling head is 2 - 3 mm smaller than the diameter of the screw rod of the T-bolt, and the diameter of the bundling groove is 1 - 2 mm smaller than the diameter of the bundling head.

[0013] Furthermore, the width of the T-shaped head of the T-bolt is the same as the diameter of the screw rod of the T-bolt; the length of the T-shaped head of the T-bolt is 2 - 3 times the diameter of the screw rod of the T-bolt.

[0014] Furthermore, the thickness of the flanging body is 1 - 3 mm.

[0015] In the second aspect, based on the one-sided fastening bolt for an enclosed space provided in the first aspect, the present invention provides an installation method for the one-sided fastening bolt for an enclosed space, including the following steps:

[0016] S1: Open waist-shaped holes on the enclosed body and the fastened part.

[0017] S2: Insert the end of the T-bolt with the T-shaped head into the waist-shaped hole, and rotate the T-bolt by 90°, so that the T-shaped head of the T-bolt is perpendicular to the length direction of the waist-shaped hole.

[0018] S3: Insert two stop blocks on both sides of the T-bolt.

[0019] S4: Install the fastening nut on the threaded end of the T-bolt.

[0020] In this solution, the mounting hole of the T-bolt is designed as a waist-shaped hole. The T-shaped head of the T-bolt can be inserted into the enclosed body by using the length of the waist-shaped hole. After insertion, rotate the T-bolt to fix it in the waist-shaped hole; then insert the stop blocks to limit the T-bolt; subsequently, install the fastening nut to achieve the connection between the enclosed body and the fastened part, with simple assembly and low operation difficulty.

[0021] Furthermore, in S4, when installing the fastening nut, the T-bolt can be pulled by the pulling wire.

[0022] In this solution, the guy wire pulls on the T-bolt to prevent it from being pushed into the interior of the sealed body when installing the fastening nut.

[0023] The beneficial effects of the present invention are as follows:

[0024] The unilateral fastening bolt for a sealed space provided by the present invention uses the T-head of the T-bolt to be fixed inside the sealed body. After fixation, stop blocks are inserted on both sides of the T-bolt to position the T-bolt; this connection structure is simple, efficient, and fast to install, and can realize connecting two objects using the T-bolt in a sealed space. After connection, it has a self-provided installation hole space filling function and a fastening and anti-rotation function, and can effectively achieve connection and fastening in a sealed space. The T-bolt is designed with a bundling groove for the guy wire to effectively prevent the problem that the T-bolt falls into the sealed space and is difficult to take out. The stop block can effectively fill the waist-shaped hole space around the T-bolt, improving the structural stability and reliability of the product; the flanging body on the stop block can act as a gasket, with a simple structure and multiple functions in one. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of a unilateral fastening bolt for a sealed space according to the present invention;

[0026] Figure 2 It is a schematic structural diagram of the stop block according to the present invention;

[0027] Figure 3 It is a schematic structural diagram of the T-bolt according to the present invention;

[0028] Figure 4 It is a schematic structural diagram of the connection structure between the sealed body and the fastened part according to the present invention;

[0029] Figure 5 It is Figure 4 The schematic cross-sectional structure diagram of A-A in

[0030] Figure 6 It is Figure 4 The schematic cross-sectional structure diagram of B-B in

[0031] Reference Signs:

[0032] 1. Sealed body; 2. Fastened part; 3. T-bolt; 31. Bundling groove; 32. Bundling head; 4. Fastening nut; 5. Stop block; 51. Anti-rotation body; 52. Filling body; 53. Flanging body; 6. Guy wire; Detailed Embodiments

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The following describes the specific embodiments of the present invention to facilitate those skilled in the art of this technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are within the scope of protection.

[0034] Embodiment 1

[0035] As Figure 1 shown, this embodiment provides a single-sided fastening bolt for a confined space. This single-sided fastening bolt can realize the installation of bolts in a confined space, and after installation, it has the functions of filling the installation hole space and preventing rotation during fastening, and can effectively realize the connection and fastening in a confined space. Specifically, it includes:

[0036] A T-shaped bolt 3, a stop block 5, and a fastening nut 4;

[0037] Among them, two stop blocks 5 are respectively fixed on both sides of the T-shaped bolt 3, and the two stop blocks 5 limit the T-shaped bolt 3; the threaded end of the T-shaped bolt 3 is connected with a fastening nut 4.

[0038] As Figure 2 shown, the stop block 5 includes a rotation-preventing body 51, a filling body 52, and a flanging body 53; the rotation-preventing body 51 is arranged on both sides of the T-shaped head of the T-shaped bolt 3 to prevent the T-shaped head of the T-shaped bolt 3 from rotating; the filling body 52 is connected to the inside of the rotation-preventing body 51, and the filling body 52 fills the space around the screw rod of the T-shaped bolt 3 to fill the space around the screw rod of the T-shaped bolt 3; a flanging body 53 is arranged at the end of the rotation-preventing body 51, and one side of the fastening nut 4 abuts against the flanging body 53; the flanging body 53 can play the role of a gasket, increasing the contact area with the fastening nut 4, reducing the pressure, and playing the role of protecting the parts.

[0039] One end of the T-shaped bolt 3 away from the T-shaped head is provided with a bundling head 32, a bundling groove 31 is opened on the bundling head 32, and a pulling wire 6 is bundled in the bundling groove 31; after the T-shaped bolt is inserted into the installation hole, it can be pulled by the pulling wire, the pulling wire passes through the head of the pulling wire and into the fastening nut, and the fastening nut is screwed onto the T-shaped bolt; the design of the pulling wire can prevent the T-shaped bolt from falling into the confined space.

[0040] The diameter of the bundling head is 2 - 3 mm smaller than the diameter of the screw rod of the T-shaped bolt 3, and the diameter of the bundling groove is 1 - 2 mm smaller than the diameter of the bundling head.

[0041] The width of the T-shaped head of the T-shaped bolt 3 is the same as the diameter of the screw rod of the T-shaped bolt 3; the length of the T-shaped head of the T-shaped bolt 3 is 2 - 3 times the diameter of the screw rod of the T-shaped bolt 3.

[0042] Furthermore, the thickness of the flanging body 53 is 1 to 3 mm.

[0043] Embodiment 2

[0044] Based on the single-sided fastening bolt for a confined space provided in Embodiment 1, this embodiment provides an installation method for the single-sided fastening bolt for a confined space, including the following steps:

[0045] S1: Open waist-shaped holes in the sealed body 1 and the fastened part 2.

[0046] S2: Insert one end of the T-shaped bolt 3 with a T-shaped head into the waist-shaped hole, and rotate the T-shaped bolt 3 by 90°, so that the T-shaped head of the T-shaped bolt 3 is perpendicular to the length direction of the waist-shaped hole.

[0047] S3: Insert two stop blocks 5 on both sides of the T-shaped bolt 3.

[0048] S4: Install a fastening nut 4 on the threaded end of the T-shaped bolt 3; when installing the fastening nut 4, the T-shaped bolt 3 can be pulled by a wire 6 to prevent the T-shaped bolt 3 from falling into the sealed body 1.

[0049] In this embodiment, the installation hole of the T-shaped bolt 3 is designed as a waist-shaped hole. The T-shaped head of the T-shaped bolt 3 can be inserted into the sealed body 1 by using the length of the waist-shaped hole. After insertion, rotate the T-shaped bolt 3 to fix it in the waist-shaped hole; then insert the stop blocks 5 to limit the T-shaped bolt 3; subsequently install the fastening nut 4, and the connection between the sealed body 1 and the fastened part 2 can be realized. The assembly is simple and the operation difficulty is low.

[0050] Those of ordinary skill in the art will realize that the embodiments here are to help readers understand the principles of the present invention. It should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific deformations and combinations that do not deviate from the essence of the present invention according to these technical revelations disclosed in the present invention, and these deformations and combinations are still within the protection scope of the invention.

Claims

1. A single-side fastening bolt for a confined space, characterized in that: It comprises a T-shaped bolt (3), two stop blocks (5) are respectively fixed on both sides of the T-shaped bolt (3); and a fastening nut (4) is connected to the threaded end of the T-shaped bolt (3).

2. The single-side fastening bolt for a confined space according to claim 1, characterized in that: The stop block (5) comprises a rotation-blocking body (51), and the rotation-blocking body (51) is arranged on both sides of the T-shaped head of the T-shaped bolt (3); a filling body (52) is connected to the inner side of the rotation-blocking body (51), and the filling body (52) fills around the screw rod of the T-shaped bolt (3); a flange body (53) is arranged at the end of the rotation-blocking body (51), and one side of the fastening nut (4) abuts against the flange body (53).

3. The single-side fastening bolt for a confined space according to claim 2, characterized in that: A binding head (32) is provided at one end of the T-shaped bolt (3) away from the T-shaped head. A binding groove (31) is provided on the binding head (32), and a pull wire (6) is bound in the binding groove (31).

4. The single-side fastening bolt for a confined space according to claim 3, characterized in that: The diameter of the binding head (32) is 2 to 3 mm smaller than the diameter of the screw rod of the T-bolt (3); and the diameter of the binding groove (31) is 1 to 2 mm smaller than the diameter of the binding head (32).

5. The one-side fastening bolt for a confined space according to claim 3, characterized in that: The width of the T-shaped head of the T-shaped bolt (3) is the same as the diameter of the screw rod of the T-shaped bolt (3); the length of the T-shaped head of the T-shaped bolt (3) is 2 to 3 times the diameter of the screw rod of the T-shaped bolt (3).

6. The single-side fastening bolt for a confined space according to claim 3, characterized in that: The thickness of the flange body (53) is 1 to 3 mm.

7. A method for installing a single-side fastening bolt for a confined space according to claim 3, characterized in that: The following steps are involved: S1: a waist-shaped hole is formed on the sealing body (1) and the fastener (2); S2: Insert the end of the T-shaped bolt (3) with the T-shaped head into the waist-shaped hole, and rotate the T-shaped bolt (3) 90 degrees so that the T-shaped head of the T-shaped bolt (3) is perpendicular to the length direction of the waist-shaped hole; S3: Insert two stop blocks (5) on both sides of the T-bolt (3); S4: Install the fastening nut (4) on the threaded end of the T-bolt (3).

8. The installation method of a single-side fastening bolt for a confined space according to claim 7, characterized in that: In S4, when the fastening nut (4) is installed, the T-bolt (3) can be pulled by the pull wire (6).

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