Device for improving tightening stability of double-end bolt

Abstract

The utility model discloses a device for improving the tightening stability of a stud bolt, which comprises a sleeve, four guide posts are fixedly connected in the sleeve, two arc-shaped blocks are respectively sleeved on the four guide posts in a sliding manner in pairs, the outer walls of the two arc-shaped blocks are fixedly connected with arc-shaped clamping blocks, and the outer walls of the two arc-shaped clamping blocks are provided with grooves. By arranging the guide column, the arc-shaped block, the arc-shaped clamping block, the light spring, the wear-resistant rubber mat, the outer conical block, the inner conical block and the compression spring, the stability of the double-end bolt during screwing is ensured along with the larger force applied by the arc-shaped clamping block and the plug, the wear-resistant rubber mat and the threaded part of the double-end bolt are extruded to form a larger contact area, and the service life of the double-end bolt is prolonged. Meanwhile, thread parts are prevented from being damaged; by arranging the round sleeve, the connecting sleeve, the plug, the T-shaped connecting rod, the circular ring, the fixing ring and the threaded ring, the distance of the plug in the sleeve can be adjusted according to the downward rotation distance needed by the stud.

Description

TECHNICAL FIELD

[0001] The utility model relates to double -end bolt technical field especially relates to a device that improves double -end bolt tightening stability. BACKGROUND

[0002] Double -end bolt is a kind of special fastener, both ends are provided with thread, middle part is usually the light pole without thread.This design makes double -end bolt can be connected with two components simultaneously, commonly used in the connection occasion needing frequent disassembly or needing high strength.Double -end bolt is usually made of high-strength material, such as carbon steel, alloy steel, stainless steel etc., to meet different strength and corrosion resistance requirements.

[0003] In prior art, double -end bolt is tightened in the process, due to its structural features, part of nut can be manually screwed, and another part of nut cannot be normally tightened, leading to insufficient effective connection length, therefore we propose a device that improves double -end bolt tightening stability to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in prior art and proposes a device that improves double -end bolt tightening stability.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A device that improves double -end bolt tightening stability, including sleeve, the inside fixedly connected with four guide posts of sleeve, four guide posts two two a group are slidably sleeved with two arc blocks, the outer wall of two arc blocks is fixedly connected with arc clamping block, the outer wall of two arc clamping blocks is equipped with recess, the inner wall of two recesses is fixedly connected with light spring, the one end of two light springs is fixedly connected with the inner wall of sleeve, the inner wall of two arc clamping blocks is fixedly connected with wear-resistant rubber pad, the outer wall of two arc blocks is fixedly connected with outer conical block, the inner wall of sleeve is slidably connected with two inner conical blocks, the one end of two inner conical blocks is fixedly connected with same compression spring, the one end of compression spring is fixedly connected with the inner wall of sleeve, the inside of sleeve is equipped with distance adjusting mechanism.

[0007] Preferably, the distance adjusting mechanism includes a circular sleeve, the inner wall of the sleeve is fixedly connected with one end of the circular sleeve, the outer wall of the sleeve is fixedly connected with a connecting sleeve, the inner wall of the circular sleeve is slidably connected with a T-shaped connecting rod, one end of the T-shaped connecting rod is fixedly connected with a plug, the other end of the T-shaped connecting rod is fixedly connected with a circular ring, the outer wall of the circular ring is fixedly connected with a fixed ring, the outer wall of the fixed ring is rotatably sleeved with a threaded ring, the inner wall of the threaded ring is threadedly connected with the outer wall of the connecting sleeve, by setting the distance adjusting mechanism to change the position of the plug, the distance of the double-end bolt inserted into the cylinder is changed.

[0008] Preferably, the inner walls of the two inner conical blocks are respectively in sliding connection with the outer walls of the two arc-shaped clamping blocks, and the arc-shaped blocks are driven to move by the arc-shaped clamping blocks.

[0009] Preferably, the outer wall of the sleeve is provided with a sliding hole, and the inner wall of the sliding hole is in sliding connection with the outer wall of the T-shaped connecting rod.

[0010] Preferably, the outer wall of the connecting sleeve is provided with two sliding grooves, and the inner walls of the two sliding grooves are respectively in sliding connection with the outer wall of the T-shaped connecting rod, so that the T-shaped connecting rod is assisted to move linearly.

[0011] Preferably, the inner wall of the circular ring is in sliding connection with the outer wall of the connecting sleeve, and one end of the connecting sleeve is fixedly connected with a driving head.

[0012] Compared with the prior art, the device has the advantages that:

[0013] The device comprises a guiding column, an arc-shaped block, an arc-shaped clamping block, a light spring, a wear-resistant rubber pad, an outer conical block, an inner conical block and a compression spring, and the stability of the double-headed bolt during rotation is ensured when the force applied by the arc-shaped clamping block and the plug is greater, the wear-resistant rubber pad is pressed against the threaded part of the double-headed bolt, a large contact area is formed, and the threaded part is prevented from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the device, the following will briefly introduce the drawings needed in the specific implementation manner.

[0015] Figure 1 Fig. 1 is a perspective view of the device for improving the tightening stability of a double-headed bolt according to the present application;

[0016] Figure 2 Fig. 2 is a sectional view of the device for improving the tightening stability of a double-headed bolt according to the present application;

[0017] Figure 3 Fig. 3 is a sectional perspective view of the device for improving the tightening stability of a double-headed bolt according to the present application;

[0018] Figure 4 Fig. 4 is a schematic view of the device for improving the tightening stability of a double-headed bolt according to the present application; Figure 2A magnified structural diagram of part A in the diagram.

[0019] In the diagram: 1. Sleeve; 2. Guide post; 3. Arc-shaped block; 4. Arc-shaped clamping block; 5. Lightweight spring; 6. Wear-resistant rubber pad; 7. Outer conical block; 8. Inner conical block; 9. Compression spring; 10. Circular sleeve; 11. Connecting sleeve; 12. Plug; 13. T-shaped connecting rod; 14. Circular ring; 15. Fixing ring; 16. Threaded ring; 17. Drive head. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-4 As shown, a device for improving the tightening stability of double-ended bolts is disclosed, comprising a sleeve 1, with four guide posts 2 fixedly connected inside the sleeve 1. Two arc-shaped blocks 3 are slidably mounted on each of the four guide posts 2 in pairs. Arc-shaped clamping blocks 4 are fixedly connected to the outer walls of the two arc-shaped blocks 3. The arc-shaped blocks 3 and the arc-shaped clamping blocks 4 move through the guide posts 2, and when the sleeve 1 rotates, it drives the four guide posts 2 to rotate, which in turn drives the two arc-shaped blocks 3 and the two arc-shaped clamping blocks 4 to rotate.

[0022] The outer walls of the two arc-shaped clamping blocks 4 are provided with grooves, and the inner walls of the two grooves are fixedly connected with lightweight springs 5. One end of each lightweight spring 5 is fixedly connected to the inner wall of the sleeve 1. The two lightweight springs 5 ​​ensure that the two arc-shaped blocks 3 and the two arc-shaped clamping blocks 4 are reset when not in use. The inner walls of the two arc-shaped clamping blocks 4 are fixedly connected with wear-resistant rubber pads 6, which are made of Teflon rubber.

[0023] The outer walls of the two arc-shaped blocks 3 are fixedly connected to the outer conical blocks 7. The inner wall of the sleeve 1 is fixedly connected to the two inner conical blocks 8. The inner walls of the two inner conical blocks 8 are slidably connected to the outer walls of the two arc-shaped clamping blocks 4 respectively. The inner conical blocks 8 move downward and press against the outer walls of the two outer conical blocks 7, causing the two outer conical blocks 7 and the two arc-shaped blocks 3 to move inward. One end of the two inner conical blocks 8 is fixedly connected to the same compression spring 9. One end of the compression spring 9 is fixedly connected to the inner wall of the sleeve 1.

[0024] The inner part of the sleeve 1 is provided with a distance adjusting mechanism, which comprises a round sleeve 10, the inner wall of the sleeve 1 is fixedly connected with one end of the round sleeve 10, the outer wall of the sleeve 1 is fixedly connected with a connecting sleeve 11, the inner wall of the round sleeve 10 is slidably connected with a T-shaped connecting rod 13, the outer wall of the sleeve 1 is provided with a sliding hole, the inner wall of the sliding hole is slidably connected with the outer wall of the T-shaped connecting rod 13, one end of the T-shaped connecting rod 13 is fixedly connected with a plug 12, the T-shaped connecting rod 13 moves linearly through two sliding grooves and drives the plug 12 to move linearly, and when the connecting sleeve 11 rotates, the T-shaped connecting rod 13 is driven to rotate through the two sliding grooves.

[0025] The outer wall of the connecting sleeve 11 is provided with two sliding grooves, the inner walls of the two sliding grooves are slidably connected with the outer wall of the T-shaped connecting rod 13, the other end of the T-shaped connecting rod 13 is fixedly connected with a circular ring 14, and the inner wall of the circular ring 14 is slidably connected with the outer wall of the connecting sleeve 11.

[0026] One end of the connecting sleeve 11 is fixedly connected with a driving head 17, the outer wall of the circular ring 14 is fixedly connected with a fixed ring 15, the outer wall of the fixed ring 15 is rotatably sleeved with a threaded ring 16, the inner wall of the threaded ring 16 is threadedly connected with the outer wall of the connecting sleeve 11, when the threaded ring 16 rotates through the connecting sleeve 11, the fixed ring 15 and the circular ring 14 are driven to move, and the circular ring 14 is connected with the threaded ring 16 through the fixed ring 15.

[0027] Working principle: in use, the output end of the existing electric torque gun is inserted into the driving head 17, one end of the double-headed bolt is screwed into the hole, and the sleeve 1 is sleeved on the other end of the double-headed bolt, the other end of the double-headed bolt contacts the plug 12, the electric torque gun is pressed downward, the butt joint effect of the output end and the driving head 17 is ensured, the sleeve 1 is driven to move downward with the compression spring 9, the downward movement of the compression spring 9 drives the two inner conical blocks 8 to move downward, the downward movement of the inner conical blocks 8 extrudes the outer wall of the two outer conical blocks 7, drives the two outer conical blocks 7 and the two arc-shaped blocks 3 to move inward, overcomes the elastic force of the two light springs 5 in the process, and moves inward along the two guide columns 2, the inward movement of the two outer conical blocks 7 drives the two arc-shaped clamping blocks 4 and the two wear-resistant rubber pads 6 to move inward, the inward movement of the two wear-resistant rubber pads 6 extrudes the outer wall of the other end of the double-headed bolt, and the greater the applied force, the greater the extrusion force, at the same time, the subsequent rotation of the plug 12 also drives the other end of the double-headed bolt to rotate, ensuring the stability of the double-headed bolt during rotation, and the threaded ring 16 can be rotated to drive the circular ring 14 and the fixed ring 15 to move according to the downward distance of the rotation of the double-headed bolt, the movement of the circular ring 14 drives the T-shaped connecting rod 13 to move, the movement of the T-shaped connecting rod 13 drives the plug 12 to move, and the distance between the plug 12 in the sleeve 1 changes, when the sleeve 1 contacts the surface of an object, a limiting effect is formed, so that the sleeve 1 cannot continue to move downward.

[0028] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, the conventional connection mode is adopted in the circuit connection, and the components known by the person skilled in the art are not described in detail, and the structure and principle thereof can be known by the person skilled in the art through a technical manual or through a conventional experimental method.

[0029] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for improving the stability of tightening of a double-end bolt comprising a sleeve (1), characterized in that, The inside of the sleeve (1) is fixedly connected with four guide columns (2), two two one group of the four guide columns (2) is slidably sleeved with two arc blocks (3), the outer wall of the two arc blocks (3) is fixedly connected with arc clamping blocks (4), the outer wall of the two arc clamping blocks (4) is provided with a groove, the inner wall of the two grooves is fixedly connected with light springs (5), one end of the two light springs (5) is fixedly connected with the inner wall of the sleeve (1), the inner wall of the two arc clamping blocks (4) is fixedly connected with wear-resistant rubber pads (6), the outer wall of the two arc blocks (3) is fixedly connected with outer conical blocks (7), the inner wall of the sleeve (1) is fixedly connected with two inner conical blocks (8), one end of the two inner conical blocks (8) is fixedly connected with the same compression spring (9), one end of the compression spring (9) is fixedly connected with the inner wall of the sleeve (1), the inside of the sleeve (1) is provided with a distance adjusting mechanism.

2. The device for improving the stability of tightening of a double-end bolt according to claim 1, wherein The distance adjusting mechanism comprises a round sleeve (10), the inner wall of the sleeve (1) is fixedly connected with one end of the round sleeve (10), the outer wall of the sleeve (1) is fixedly connected with a connecting sleeve (11), the inner wall of the round sleeve (10) is slidably connected with a T-shaped connecting rod (13), one end of the T-shaped connecting rod (13) is fixedly connected with a plug (12), the other end of the T-shaped connecting rod (13) is fixedly connected with a circular ring (14), the outer wall of the circular ring (14) is fixedly connected with a fixed ring (15), the outer wall of the fixed ring (15) is rotatably sleeved with a threaded ring (16), the inner wall of the threaded ring (16) is threadedly connected with the outer wall of the connecting sleeve (11).

3. The device for improving the stability of tightening of a double-end bolt according to claim 1, wherein The inner walls of the two inner conical blocks (8) are slidably connected with the outer walls of the two arc clamping blocks (4) respectively.

4. The device for improving the stability of tightening of a double-end bolt according to claim 2, wherein The outer wall of the sleeve (1) is provided with a sliding hole, the inner wall of the sliding hole is slidably connected with the outer wall of the T-shaped connecting rod (13).

5. The device for improving the stability of tightening of a double-end bolt according to claim 2, wherein The outer wall of the connecting sleeve (11) is provided with two sliding grooves, the inner walls of the two sliding grooves are slidably connected with the outer wall of the T-shaped connecting rod (13).

6. The device for improving the stability of tightening of a double-end bolt according to claim 2, wherein The inner wall of the circular ring (14) is slidably connected with the outer wall of the connecting sleeve (11), one end of the connecting sleeve (11) is fixedly connected with a driving head (17).

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