Lock bolt mechanism easy to fix and good in effect

Abstract

The utility model discloses a lock bolt mechanism easy to fix and good in effect, which comprises a screw, a gasket, a spring cushion, a nut and a special-shaped sleeve, an inclined hole is arranged at the end face of the tail of the screw along the axial direction of the screw, the special-shaped sleeve is of a hollow structure, a hexagonal groove matched with a common nut is arranged at the head of the special-shaped sleeve, and the screw is arranged in the hexagonal groove. A round hole is formed in the tail portion of the special-shaped sleeve and matched with the diameter of the tail portion of the screw, a plurality of rows of strip-shaped holes are formed in the tail portion of the special-shaped sleeve in the circumferential direction, every two adjacent rows of strip-shaped holes are arranged in a staggered mode, and each strip-shaped hole penetrates through the central axis of the special-shaped sleeve and corresponds to the opposite strip-shaped hole. According to the lock bolt mechanism, the special-shaped sleeve, the screw with the inclined hole and the cotter pin are arranged, the hexagonal groove is formed in the head of the special-shaped sleeve, and the strip-shaped holes are formed in the tail of the special-shaped sleeve, so that the fixing state of the nut can be further improved, the problem of looseness of the nut is solved, the structure has a stable effect, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of structural anti-loosening, in particular to an anti-loosening bolt mechanism which is easy to fix and has good effect. Background Art

[0002] The traditional bolt installation method is to place the object between the screw and the nut, and connect the nut and the screw through the thread to fix the object. This common fixing method is widely used, but after long-term use, the nut will often loosen, causing the object to shake, and the effect is not firm. The nut can only be tightened again. The maintenance process is relatively frequent, the structure is unstable, and the maintenance cost is increased. In view of the above problems, it is more important to design an anti-loosening bolt mechanism that is easy to fix and has good effects. Utility Model Content

[0003] The utility model aims to provide an anti-loosening bolt mechanism which is easy to fix and has good effect, so as to solve the above-mentioned problem.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-loosening bolt mechanism which is easy to fix and has good effect, comprising a screw, a gasket, a spring gasket, a nut and a special-shaped sleeve, the tail of the screw is provided with an inclined hole at the end face along the axial direction of the screw, the special-shaped sleeve is a hollow structure, the head thereof is provided with a hexagonal groove for use with an ordinary nut, the tail is provided with a circular hole which matches the diameter of the tail of the screw, the tail of the special-shaped sleeve is provided with a plurality of rows of strip holes along the circumferential direction, and adjacent rows of strip holes are staggered, and each strip hole passes through the central axis of the special-shaped sleeve and corresponds to the opposite strip hole.

[0005] Preferably, the tail of the screw passes through the fixing object, the washer, and the spring washer in sequence, and the fixing object is fixed by threaded connection between the nut and the screw.

[0006] Preferably, the special-shaped sleeve passes through the tail of the screw so that the hexagonal groove opened therein is socketed with the nut, and the cotter pin is embedded in the inclined hole on the screw. The head of the cotter pin passes through the strip hole set on the special-shaped sleeve, and the cotter pin is bent to further fix the nut to the screw.

[0007] The beneficial effects of the utility model are as follows: the anti-loosening bolt mechanism is provided with a special-shaped sleeve, a screw with an inclined hole, and a cotter pin, and a hexagonal groove is opened on the head of the special-shaped sleeve, and a plurality of strip holes are opened on the tail. When the object is fixed by connecting the nut with the screw, the special-shaped sleeve is passed through the tail of the screw so that the hexagonal groove and the nut are connected in a limited position. The cotter pin is passed through the inclined hole at the tail of the screw and the strip hole, and the end is bent, which can further improve the fixing state of the nut and solve the problem of nut loosening. The structure has a stable effect and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 It is the structural explosion diagram of the utility model;

[0010] Figure 3 This is a cross-sectional view of the screw structure of the utility model;

[0011] Figure 4 It is a structural schematic diagram of another implementation manner of the special-shaped sleeve of the utility model.

[0012] In the figure: 1-screw, 2-fixing object, 3-washer, 4-spring washer, 5-nut, 6-special-shaped sleeve, 7-cotter pin, 8-oblique hole, 9-hexagonal groove, 10-strip hole. DETAILED DESCRIPTION

[0013] 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. Example

[0014] See also Figure 1-4 The utility model provides a technical solution: an anti-loosening bolt mechanism that is easy to fix and has good effect, comprising a screw 1, a gasket 3, a spring gasket 4, a nut 5 and a special-shaped sleeve 6. The tail of the screw 1 is provided with an oblique hole 8 at the end face along the axial direction of the screw 1. The special-shaped sleeve 6 is a hollow structure, and its head is provided with a hexagonal groove 9 used in conjunction with the ordinary nut 5. The tail is provided with a round hole that matches the tail diameter of the screw 1. The tail of the special-shaped sleeve 6 is provided with a plurality of rows of strip holes 10 along the circumferential direction, and each adjacent row of strip holes 10 is staggered, and each strip hole 10 passes through the central axis of the special-shaped sleeve 6 and corresponds to the opposite strip hole 10.

[0015] It should be noted that the groove formed on the head of the special-shaped sleeve 6 and used in conjunction with the ordinary nut 5 is not limited to the hexagonal groove 9, and the cross-section may also be a plum blossom shape, such as Figure 4 As shown, the nut 5 can also be limited and fixed.

[0016] The tail of the screw 1 passes through the fixture 2, the washer 3, and the spring washer 4 in sequence, and the fixture 2 is fixed by a nut 5 threadedly connected to the screw 1.

[0017] The special-shaped sleeve 6 passes through the tail of the screw 1, so that the hexagonal groove 9 provided therein is sleeved with the nut 5, the cotter pin 7 is embedded in the inclined hole 8 on the screw 1, the head of the cotter pin 7 passes through the strip hole 10 provided on the special-shaped sleeve 6, and the cotter pin 7 is bent to further fix the nut 5 with the screw 1.

[0018] During the specific implementation of the utility model: firstly, the screw 1 is passed through the fixed object 2, the gasket 3, and the spring gasket 4, and the fixed object 2 is fixed by the threaded connection between the nut 5 and the screw 1. After the fixed object is fixed by the connection between the nut 5 and the screw 1, the special-shaped sleeve 6 is passed through the tail of the screw 1, so that its hexagonal groove 9 is connected with the nut 5 in a limited position, and the cotter pin 7 is passed through the inclined hole 8 at the tail of the screw 1, and passes through the bar hole 10, and the end is bent, which can further improve the fixing state of the nut 5, thereby solving the problem of the nut 5 loosening. The structure has a stable effect and reduces maintenance costs. It should be noted that the hole opened at the tail of the screw 1 in this embodiment is not limited to an inclined hole, but can also be set as a vertical hole. However, in the actual operation and use process, after the cotter pin passes through the vertical hole, it is necessary to deliberately observe the position of the bar hole with the eyes, which is not easy to align the hole. Therefore, this embodiment adopts the method of an inclined hole for ease of use.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening bolt mechanism that is easy to fix and has good effect, comprising a screw (1), a washer (3), a spring washer (4), a nut (5) and a special-shaped sleeve (6), characterized in that: The tail of the screw (1) is provided with an oblique hole (8) at the end surface along the axial direction of the screw (1); the special-shaped sleeve (6) is a hollow structure, and its head is provided with a hexagonal slot (9) for use with a common nut (5); the tail is provided with a round hole that matches the diameter of the tail of the screw (1); the tail of the special-shaped sleeve (6) is provided with a plurality of rows of strip holes (10) along the circumferential direction, and each adjacent row of strip holes (10) is staggered, and each strip hole (10) passes through the central axis of the special-shaped sleeve (6) and corresponds to the opposite strip hole (10).

2. The anti-loosening bolt mechanism which is easy to fix and has good effect according to claim 1 is characterized in that: The tail of the screw (1) passes through the fixing object (2), the washer (3), and the spring washer (4) in sequence, and the fixing object (2) is fixed by a nut (5) threadedly connected to the screw (1).

3. The anti-loosening bolt mechanism which is easy to fix and has good effect according to claim 1 is characterized in that: The special-shaped sleeve (6) passes through the tail of the screw (1) so that the hexagonal groove (9) provided therein is sleeved with the nut (5), the cotter pin (7) is embedded in the oblique hole (8) on the screw (1), the head of the cotter pin (7) passes through the strip hole (10) provided on the special-shaped sleeve (6), and the cotter pin (7) is bent so that the nut (5) is further fixedly connected to the screw (1).

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