Fixator for limiting opening direction of spring washer during bolt tightening

Abstract

The utility model relates to the technical field of work fixtures, in particular to a fixer for limiting the opening direction of a spring washer when a bolt is tightened, which comprises a positioning seat, a positioning plate is fixed at the top of the positioning seat, the front end of the positioning plate can be clamped with the opening of the spring washer, a handle is fixed on the side surface of the positioning seat, and an included angle is formed between the handle and the positioning seat. The spring washer is simple in structure, convenient to use and capable of effectively limiting the opening direction of the spring washer and preventing the spring washer from rotating along with the nut, so that the opening of the spring washer in a fastened bolt structure faces below the horizontal line, the probability that rainwater erodes the bolt from the opening of the spring washer is reduced, the corrosion probability of the fastening bolt is reduced, and the service life of the fastening bolt is prolonged. The service life of the bolt is prolonged, the bolt is convenient to disassemble during maintenance, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a fixture that limits the opening direction of a spring washer when tightening a bolt. Background Technology

[0002] Threaded connections typically consist of four components: bolts, spring washers, flat washers, and nuts. When threaded connections are exposed to the elements, such as the fixing bolts connecting rails and rails, the threads are easily corroded by rain and sun, leading to rust. This causes the bolt and nut connection to become stuck together with rust, making disassembly difficult and severely impacting maintenance efficiency. Furthermore, rust on the bolts also reduces their strength, posing a significant safety hazard to railway operations.

[0003] To reduce bolt rusting, extensive investigation revealed that the upward-facing opening of the spring washer allowed rainwater to seep through and corrode the bolt, making it more susceptible to rust. Therefore, the solution we need to address is to ensure that the spring washer opening faces below the horizontal line when tightening bolts onto the rails, thereby minimizing rainwater corrosion. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a retainer that limits the direction of the spring washer opening when tightening bolts. When tightening the nut, the retainer holds the spring washer opening below the horizontal line and prevents it from rotating with the nut, thereby reducing the probability of rainwater corroding the bolt through the spring washer opening.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a fixing device that limits the opening direction of a spring washer when tightening a bolt, including a positioning seat, a positioning plate that can engage the opening of a spring washer at the top of the positioning seat, and a handle that is fixed on the side of the positioning seat.

[0006] Preferably, the side of the positioning seat that contacts the rail is an inclined surface, and the included angle of the inclined surface is equal to the inclination angle of the rail surface. This inclined surface allows the positioning seat to be substantially vertical, thereby enabling the positioning plate to engage with the opening of the spring washer in a direction parallel to the spring washer.

[0007] Preferably, the positioning plate and the positioning seat are connected by bolts, and an adjustment pad for adjusting the height of the positioning plate is provided between them.

[0008] Preferably, a magnet is fixed to the side of the positioning seat that is in contact with the rail.

[0009] Preferably, a magnet is fixed to the side of the positioning seat facing the rail clamp.

[0010] Preferably, both the positioning seat and the positioning plate extend in the direction of the fastening bolt, with the portion of the positioning plate extending in that direction suspended. The positioning seat extending in the direction of the fastening bolt increases the contact area between the positioning seat and the rail, and extends below or even beyond the fastening bolt, thereby enhancing resistance to the torque transmitted through the spring washer during bolt tightening. The positioning plate's front end faces the fastening bolt, and its extension and suspension in that direction prevent interference with the fastening bolt and fastening tools.

[0011] Preferably, the front end of the positioning plate used to engage the opening of the spring washer is in the shape of a "7". That is, the front end face of the positioning plate is chamfered to avoid the spring washer, or to make the top corner of the front end of the positioning plate better engage the opening of the spring washer.

[0012] Preferably, the positioning seat is made of 3Cr13 aluminum alloy, and the positioning plate is made of 7075 aluminum alloy. Both materials have high strength, and the yield strength of 7075 aluminum alloy can reach 455MPa, thereby preventing deformation of the positioning plate and improving the service life of the fixture.

[0013] Preferably, the thickness of the positioning plate is less than the thickness of the spring washer.

[0014] Preferably, the handle forms an angle of 0° to 60° with the positioning seat, and the handle is oriented away from the connecting bolt.

[0015] The beneficial effects of this utility model are: a fixing device for limiting the opening direction of a spring washer when tightening a bolt, comprising a positioning seat, a positioning plate whose front end can engage with the opening of the spring washer fixed to the top of the positioning seat, and a handle fixed to the side of the positioning seat. This utility model has a simple structure and is easy to use. It can effectively limit the opening direction of the spring washer and prevent it from rotating with the nut, thereby ensuring that the opening of the spring washer in the tightened bolt structure faces below the horizontal line, thus reducing the probability of rainwater corroding the bolt through the spring washer opening, reducing the probability of bolt corrosion, extending the bolt's service life, and facilitating bolt disassembly during maintenance, improving maintenance efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of a retainer that limits the opening direction of a spring washer when tightening a bolt, according to this utility model.

[0017] Figure 2 This is a front view of a fastener that limits the opening direction of a spring washer when tightening a bolt, according to this utility model.

[0018] Figure 3 yes Figure 2 Rear view;

[0019] Figure 4 yes Figure 2 A bottom view;

[0020] Figure 5 yes Figure 2 The left view.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1 – Positioning seat, 2 – Positioning plate, 3 – Handle, 4 – Adjustment pad, 5 – Magnet one, 6 – Magnet two. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the present invention.

[0024] like Figures 1-5 As shown, a fixing device for limiting the opening direction of a spring washer when tightening a bolt according to this embodiment includes a positioning seat 1, a positioning plate 2 whose front end can engage with the opening of the spring washer is fixed to the top of the positioning seat 1, and a handle 3 is fixed to the side of the positioning seat 1.

[0025] This embodiment uses a spring washer in a bolt structure that limits the fastening of rails and clamps as an example for illustration. However, its actual use is not limited to this. It can be applied to other places to limit the opening orientation of spring washers when fastening bolts, or even to limit the circumferential orientation of non-spring washers, such as springs, gaskets, clamps, etc.

[0026] To accommodate different fastening bolt installation heights, the positioning plate 2 and the positioning seat 1 are connected by bolts, and an adjustment pad 4 is provided between them to adjust the height of the positioning plate 2.

[0027] Because the lower edge of the rail is sloped, in order to ensure that the positioning seat 1 can fit against the rail and that the positioning plate 2 is parallel to the spring washer, the side of the positioning seat 1 that fits against the rail is set as a slope. In order to better fix the positioning seat 1 and make it better resist the torque transmitted by the spring washer when tightening the bolt, the positioning seat 1 is configured in two ways: 1. A magnet 5 is fixed on the sloped surface; 2. The positioning seat 1 extends in the direction of tightening the bolt to lengthen the lever arm of the positioning seat 1.

[0028] To better secure the positioning seat 1 and to accommodate the excessively high installation height of some fastening bolts, a magnet 6 is fixed to the side of the positioning seat 1 facing the rail clamp.

[0029] In this embodiment, the positioning seat 1 is fixed with a handle 3. The handle 3 is not perpendicular to the positioning seat 1, but forms an angle of 0° to 60° with the positioning seat 1 and faces away from the bolt. In this way, the fixing device can be operated in a different direction, and when tightening the bolt, a reverse torque can be applied by holding the handle 3 to resist the torque transmitted from the spring washer.

[0030] The thickness of the positioning plate 2 is less than the thickness of the spring washer. In this embodiment, the thickness of the positioning plate 2 is 5mm, which prevents the positioning plate 2 from being clamped by the nut. After the bolt is tightened, it is convenient to remove the fixing device.

[0031] The fixation procedure provided in this embodiment is as follows:

[0032] 1. Fit the bolts, spring washers, and nuts into the connection holes of the rail and the clamp, and use the magnet-5

[0033] Make the fixing device adhere to the rail, adjust the position of the spring washer and the fixing device, so that the positioning plate 2

[0034] The front end abuts against the lower end face of the spring washer opening;

[0035] 2. Tighten the nut counterclockwise. The positioning plate 2 will restrict the spring washer from rotating counterclockwise. After the tightening torque reaches the standard, remove the retainer.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and for the convenience of describing the technical solution, the front, back, left, right, top, middle, and bottom orientations are based on the accompanying drawings and are not a limitation on the protection scope of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the essence and scope of the technical solution of this utility model.

Claims

1. A fastener that limits the opening direction of a spring washer when tightening a bolt, characterized in that: The device includes a positioning seat, the top of which is fixed with a positioning plate whose front end can engage with the opening of a spring washer, and the side of which is fixed with a handle.

2. The fastener for limiting the opening direction of the spring washer when tightening a bolt according to claim 1, characterized in that: The side of the positioning seat that is in contact with the rail is an inclined surface, and the included angle of the inclined surface is equal to the inclination angle of the rail surface in contact with it.

3. The fastener for limiting the opening direction of the spring washer when tightening a bolt, as described in claim 1, is characterized in that: The positioning plate and the positioning seat are connected by bolts, and an adjustment pad for adjusting the height of the positioning plate is provided between them.

4. A retainer for limiting the opening direction of a spring washer when tightening a bolt, as described in claim 1, characterized in that: A magnet is fixed to the side of the positioning seat that is in contact with the rail.

5. A retainer for limiting the opening direction of a spring washer when tightening a bolt, as described in claim 1, characterized in that: A magnet is fixed to the side of the positioning seat facing the rail clamp.

6. A retainer for limiting the opening direction of a spring washer when tightening a bolt, as described in claim 1, characterized in that: Both the positioning seat and the positioning plate extend in the direction of the fastening bolt, with the portion of the positioning plate extending in the direction of the fastening bolt suspended in the air.

7. A retainer for limiting the opening direction of a spring washer when tightening a bolt, as described in claim 1, characterized in that: The positioning plate is used to engage the front end of the spring washer opening, which is shaped like the number "7".

8. A retainer for limiting the opening direction of a spring washer when tightening a bolt, as described in claim 1, characterized in that: The positioning seat is made of 3Cr13, and the positioning plate is made of 7075 aluminum alloy.

9. A retainer for limiting the opening direction of a spring washer when tightening a bolt, as described in claim 1, characterized in that: The thickness of the positioning plate is less than the thickness of the spring washer.

10. A retainer for limiting the opening direction of a spring washer when tightening a bolt, as described in claim 1, characterized in that: The handle forms an angle of 0° to 60° with the positioning seat, and the handle is oriented away from the connecting bolt.

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