Quick tightening process bolt assembly

Abstract

The utility model discloses a component for quickly tightening a process bolt, which belongs to the technical field of fastening of production and assembly process bolts and is provided with a bolt body provided with a nut. An opening extending towards the nut is formed in the tail end of the bolt body; the locking ring can be arranged outside the hydrant body in a sleeving manner in an elastic deformation manner; the embedded sleeve is arranged outside the hydrant body in a sleeving manner, and a wedge block capable of being embedded into the opening is fixedly connected into the embedded sleeve; in the working state, the nesting sleeve moves in the axis direction of the bolt body, the locking ring provides radial tightening force, the opening of the bolt body tightens inwards to enable the opening to be necked down, or the wedge block provides tension outwards, and the opening of the bolt body expands outwards to enable the opening of the bolt body to be expanded in diameter. And the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt fastening in production and assembly processes, in particular to a fast tightening process bolt assembly. Background Art

[0002] Bolts are a commonly used fastener, usually used to fasten two or more parts together to form a complete system or machine. The main function of a bolt is fastening. It can firmly fasten two parts together through the engagement of threads. It can also distribute the load, that is, evenly distribute the pressure of the stressed parts to the surface of the connected parts, thereby reducing the pressure of the stressed parts. It can also be used to adjust the position and direction of the parts. In general, it has extremely wide applications in machinery, construction, automobiles, aviation and other fields.

[0003] The commonly used process bolts in the industry are hexagonal bolts, including hexagonal bolts or hexagonal bolts. The bolt shape structures include hexagonal head, rod shape, tail shape, thread, etc. Process bolts in the railway vehicle manufacturing field are commonly used for: When connecting, positioning or assembling during the manufacturing process, the bolts themselves need to be installed bolts to enable the next process to proceed smoothly. Generally, general tightening torque requirements are implemented and the frequency of use is relatively high.

[0004] The principle of existing hexagonal head structural bolts is to use the physics and mathematical principles of the circular rotation of the inclined surface of an object and the friction force to gradually tighten the objects and parts. When using, it is necessary to first find the positioning engagement with the workpiece process threaded hole and then screw it in. There is uncontrollable preparation time before the tightening operation. The tightening process is time-consuming and laborious, and the single repetitive action is boring when manually operated. Therefore, there is an urgent need to develop a quick tightening process bolt assembly. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a quick tightening process bolt assembly, which can reduce the preparation time before the tightening operation when the existing process bolts are used, reduce the tightening process time, and save manual force.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a quick tightening process bolt assembly, comprising:

[0008] A bolt body having a nut;

[0009] The end of the bolt body is provided with an opening extending toward the nut; and

[0010] A locking ring, which can be elastically deformed and sleeved on the outside of the bolt body; and

[0011] A nesting member, which is sleeved on the outside of the bolt body, and a wedge block capable of being embedded in the opening is fixedly connected to the nesting member;

[0012] In the working state, the nest is displaced along the axis of the bolt body, the locking ring provides radial tightening force, the opening of the bolt body is tightened inwardly to shrink it, or the wedge block provides tension outwardly, the opening of the bolt body is expanded outwardly to increase its diameter.

[0013] Furthermore, the opening extends from the end of the bolt body in an opening width from wide to narrow.

[0014] Furthermore, the bolt body includes an optical axis section and a threaded section, and the optical axis section is sleeved with the locking ring.

[0015] Furthermore, the nut is an external hexagonal nut.

[0016] Furthermore, a cross groove is provided on the end surface of the nut.

[0017] Furthermore, a cross groove is provided on the end surface of the nut, and an axial hole is provided on the side of the nut, through which a tightening handle is connected.

[0018] Furthermore, the nut is a hexagonal nut.

[0019] Furthermore, an axial hole is opened on the side of the nut, and a tightening handle is connected through the axial hole.

[0020] In the above technical solution, the utility model provides a quick tightening process bolt assembly, which has the following beneficial effects:

[0021] The fast tightening process bolt assembly designed by the utility model has an opening in its bolt body, a locking ring and a nesting sleeve are arranged on the outside of the bolt body, and a wedge block that can be embedded in the opening is fixedly connected to the nesting. When the nesting moves away from the nut along the bolt body axis, the locking ring provides radial tightening force, and the opening of the bolt body is tightened inward to shrink its neck, and the bolt body is separated from the workpiece thread. At this time, the bolt can be removed with little effort until the opening is merged and the bolt can be quickly pulled out. When the nesting moves toward the nut along the bolt body axis, the wedge block provides tension outward, and the opening of the bolt body expands outward to increase its diameter. The external thread of the bolt body 1 meshes with the internal thread of the workpiece to complete the purpose of fixing the workpiece.

[0022] The quick tightening process bolt assembly reduces the preparation time before the tightening operation, the tightening process time, saves manual force, is easy to operate, saves effort and time, is easy to install and unload, is sturdy and durable, and effectively improves the beneficial effects of work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is an axonometric diagram of a quick tightening process bolt assembly disclosed in the utility model;

[0025] Figure 2 The utility model discloses an exploded view of a quick tightening process bolt assembly.

[0026] Description of reference numerals:

[0027] 1. Bolt body; 11. Nut; 12. Opening; 13. Cross slot; 2. Locking ring; 3. Nesting; 31. Wedge; 4. Tightening handle. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] See also Figure 1-2 As shown;

[0030] The utility model discloses a quick tightening process bolt assembly, comprising a bolt body 1, a locking ring 2, and a nest 3;

[0031] The bolt body 1 is constructed as a cylindrical structure, which includes an optical axis section and a threaded section. The optical axis section is provided with a locking ring 2, and a nut 11 is fixedly connected to the end of the optical axis section. An opening 12 extending toward the nut 11 is provided at the end of the bolt body 1. Preferably, the opening 12 extends from the end of the bolt body 1 in a gradual manner from wide to narrow.

[0032] The locking ring 2 can be elastically deformed and sleeved on the outside of the bolt body 1. Specifically, the locking ring 2 is an elastic steel ring in the prior art that can provide radial tightening force, and can also be an open elastic washer or an anti-slip spring pad, such as the anti-slip spring pad produced by the manufacturer Kuaiyu;

[0033] The nesting 3 is a circular sleeve, which is sleeved on the outside of the bolt body 1, and a wedge block 31 capable of being embedded in the opening 12 is fixedly connected to the nesting 3;

[0034] During operation, after the nesting 3 is pushed in along the axis direction of the bolt body 1, the bolt body 1 is placed in the process hole of the assembly bolt. At this time, the bolt body 1 is conical. As the lower plane of the nesting 3 contacts the upper plane of the component where the process hole is located, the wedge 31 is automatically pushed in along the extension direction of the opening 12. At this time, the force is transmitted to the bolt body 1 to generate a tension F perpendicular to the axis outward, the bolt body 1 expands in diameter, and the external thread of the bolt body 1 meshes with the internal thread of the workpiece. Then, the bolt body 1 is tightened by manually screwing the nut 11 to meet the requirement of fixing the workpiece.

[0035] When disassembling, the nut 11 is manually rotated in reverse, the bolt body 1 is unscrewed, the locking ring 2 provides radial tightening force, and the nest 3 slides along the opening 12 toward the workpiece under the action of the locking ring 2 until the bolt body 1 is combined into a cone, the bolt body 1 is necked, and the workpiece thread is withdrawn, and the bolt body 1 is directly pulled out along the threaded hole;

[0036] Preferably, the nut 11 is an external hexagonal nut, and the bolt body 1 can be disassembled and assembled with the help of a wrench;

[0037] In another preferred embodiment, a cross groove 13 is formed on the end surface of the external hexagonal nut, and the external hexagonal nut and the cross groove 13 are used in combination, and the bolt body 1 can be disassembled and assembled with the help of a screwdriver or a wrench;

[0038] In another preferred embodiment, a cross groove 13 is provided on the end face of the external hexagonal nut, and an axial hole is provided on the side of the external hexagonal nut, through which a tightening handle 4 is connected. In this embodiment, the external hexagonal nut, the cross groove 13, and the tightening handle 4 are used in combination, and in addition to using a screwdriver or a wrench, the bolt body 1 can also be manually disassembled and assembled by tightening the handle 4, which further improves the convenience of loading and unloading;

[0039] In another preferred embodiment, the nut 11 is a hexagon socket nut 11, with an axial hole formed on the side, and a tightening handle 4 is connected through the axial hole. In this embodiment, the bolt body 1 can be disassembled and assembled by a hexagon socket wrench or by tightening the handle 4:

[0040] The fast tightening process bolt assembly designed by the utility model has an opening in its bolt body, a locking ring and a nesting sleeve are arranged on the outside of the bolt body, and a wedge block that can be embedded in the opening is fixedly connected to the nesting. When the nesting moves away from the nut along the bolt body axis, the locking ring provides radial tightening force, and the opening of the bolt body is tightened inward to shrink its neck, and the bolt body is separated from the workpiece thread. At this time, the bolt can be removed with little effort until the opening is merged and the bolt can be quickly pulled out. When the nesting moves toward the nut along the bolt body axis, the wedge block provides tension outward, and the opening of the bolt body expands outward to increase its diameter. The external thread of the bolt body 1 meshes with the internal thread of the workpiece to complete the purpose of fixing the workpiece.

[0041] The quick tightening process bolt assembly reduces the preparation time before the tightening operation, the tightening process time, saves manual force, is easy to operate, saves effort and time, is easy to install and unload, is sturdy and durable, and effectively improves the beneficial effects of work efficiency.

[0042] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quick tightening process bolt assembly, characterized in that: include: A bolt body (1) having a nut (11), wherein the end of the bolt body (1) is provided with an opening (12) extending toward the nut (11); and A locking ring (2) which is elastically deformable and sleeved on the outside of the bolt body (1); A nest (3) which is sleeved on the outside of the bolt body (1), and a wedge (31) which can be embedded in the opening (12) is fixedly connected to the nest (3); In the working state, the nest (3) is displaced along the axial direction of the bolt body (1), the locking ring (2) provides a radial tightening force, the opening (12) of the bolt body (1) is tightened inwardly to shrink it, or the wedge block (31) provides tension outwardly, the opening (12) of the bolt body (1) is expanded outwardly to increase its diameter.

2. A quick tightening process bolt assembly according to claim 1, characterized in that ； The opening (12) extends from the end of the bolt body (1) with the opening width gradually becoming narrower.

3. A quick tightening process bolt assembly according to claim 1, characterized in that; The bolt body (1) comprises an optical axis section and a threaded section, and the optical axis section is sleeved with the locking ring (2).

4. A quick tightening process bolt assembly according to any one of claims 1 to 3, characterized in that ； The nut (11) is an external hexagonal nut.

5. A quick tightening process bolt assembly according to claim 4, characterized in that ； The end surface of the nut (11) is provided with a cross groove (13).

6. A quick tightening process bolt assembly according to claim 4, characterized in that; The end surface of the nut (11) is provided with a cross groove (13), and the side of the nut (11) is provided with an axial hole, through which a tightening handle (4) is connected.

7. A quick tightening process bolt assembly according to any one of claims 1 to 3, characterized in that ； The nut (11) is a hexagonal nut (11).

8. A quick tightening process bolt assembly according to claim 7, It is characterized by: The nut (11) has an axial hole on its side, through which a tightening handle (4) is connected.

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