Anti-loosening fastening device for U-shaped iron bolt of turnout

Abstract

The utility model discloses a turnout U-shaped iron bolt anti-loosening fastening device which comprises an anti-loosening plate, the anti-loosening plate is matched with a U-shaped iron piece and located on the two sides of a track respectively, two grooves used for containing bolt heads are symmetrically formed in the side portions of the anti-loosening plate, the shape of the grooves is matched with that of the bolt heads, and the anti-loosening plate and the U-shaped iron piece are matched with each other. And a bolt hole for a screw rod to penetrate through is formed in the center of the groove. The anti-loosening plate is arranged, the groove is formed in the side portion of the anti-loosening plate, the shape of the groove and the shape of the bolt head are both of a hexagonal structure, the bolt head is limited and fixed through the groove, the situation that when the screw and the bolt head rotate, the locking nut is driven to rotate, and consequently the bolt is overall separated is avoided, and the situation that the tongue rail is blocked and cannot act in place due to loosening of the bolt is effectively avoided. And the problem of turnout meter loss is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a turnout U-shaped iron bolt anti-loosening and fastening device. Background Art

[0002] A turnout consists of a switch, base rail, heart rail, and wing rails. The external locking device is a mechanical device that converts and directly locks the point rail to the base rail, heart rail to the wing rail, through the switch, while keeping the rejection point rail in the standard open position. The lock of the turnout is achieved outside the switch. At present, the U-shaped iron and hexagonal bolt fixing nuts of the GW-type external locking device of the subway turnout have no anti-loosening design. The U-shaped iron hexagonal bolt head of the first traction switch J1 of the turnout is equipped with a groove-type anti-loosening structure, while the hexagonal bolt head of the second traction switch J2 of the turnout has no groove-type anti-loosening structure. There is a risk that the hexagonal bolt of the turnout external locking device will rotate with the nut, causing the hexagonal bolt to detach, resulting in the turnout point rail being stuck and unable to move into place, posing a hidden danger of the turnout losing its gauge. Summary of the Invention

[0003] The purpose of the utility model is to provide a U-shaped iron bolt anti-loosening and fastening device for a turnout, which solves the problems in the prior art by arranging an anti-loosening plate and opening a groove on its side that is adapted to the hexagonal bolt head to prevent the screw from rotating and causing the locking nut to rotate and cause the bolt to loosen.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A turnout U-shaped iron bolt anti-loosening and fastening device includes an anti-loosening plate, which cooperates with the U-shaped iron piece and is located on both sides of the track. Two grooves for accommodating bolt heads are symmetrically opened on the side of the anti-loosening plate. The shape of the groove is adapted to the bolt head, and a bolt hole for passing the screw is opened in the center of the groove.

[0006] Preferably, the anti-loosening plate has a length of 200 mm, a thickness of 6 mm, and a height of 50 mm.

[0007] Preferably, the groove has a hexagonal structure and a depth of 5 mm.

[0008] Preferably, the center distance between the bolt holes is 122 mm.

[0009] Preferably, the anti-loosening plate is made of stainless steel / carbon steel galvanized material.

[0010] Preferably, the screw rod cooperates with a locking nut, the locking nut is located on one side of the U-shaped iron piece, and an elastic washer is provided on the contact surface between the locking nut and the U-shaped iron piece.

[0011] Preferably, a first marking line is provided on the anti-loosening plate, and the first marking line is located directly above the groove.

[0012] Preferably, a second marking line corresponding to the first marking line is provided on the bolt head.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model is provided with an anti-loosening plate and a groove is formed on its side. The shape of the groove and the bolt head are both hexagonal structures. The groove limits and fixes the bolt head, preventing the locking nut from rotating when the screw and bolt head rotate, causing the bolt to be detached as a whole. This effectively prevents the point rail from being stuck and unable to move into place due to loose bolts, causing the switch to lose its meter. At the same time, because the bolt head is limited, the screw will not rotate when tightening the locking nut, so there is no need to additionally fix the screw, saving time and effort, and solving the problem of low work efficiency in the process of tightening and fixing the bolts due to the narrow space between the point rail and the base rail.

[0015] 2. The utility model fixes the bolts by opening a hexagonal groove. The depth of the groove is just enough to clamp about half of the hexagonal bolt head. A thickness of 1mm is reserved at the bolt connection, which can ensure a reliable connection with the hexagonal bolt and leave a certain amount of clearance, while ensuring that there is no impact on the existing GW type external locking device and the switch U-shaped iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axonometric drawing of the anti-loosening plate of the utility model;

[0017] Figure 2 This is a schematic diagram of the position relationship between the anti-loosening plate and the bolts of the utility model;

[0018] Figure 3 This is a schematic plan view of the anti-loosening plate of the utility model;

[0019] Figure 4 This is a diagram showing the connection relationship between the bolt and the U-shaped iron piece of the present utility model.

[0020] In the figure: 1. Anti-loosening plate; 2. Groove; 3. Bolt hole; 4. U-shaped iron piece; 5. Bolt head; 6. Screw; 7. Lock nut; 8. Elastic washer; 9. First marking line; 10. Second marking line. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In order to solve the problem in the prior art that the external hexagonal bolt of the turnout external locking device drives the locking nut to rotate when rotating, causing the bolt to disengage, the following technical solution is provided. Figure 1-4 ;

[0023] A turnout U-shaped iron bolt anti-loosening and fastening device comprises an anti-loosening plate 1. The anti-loosening plate 1 cooperates with a U-shaped iron piece 4 and is respectively located on both sides of a track and connected by bolts.

[0024] The anti-loosening plate 1 is 200 mm long, 6 mm thick and 50 mm high. Two grooves 2 for accommodating the bolt head 5 are symmetrically provided on the side of the anti-loosening plate 1. A bolt hole 3 for passing the screw 6 is provided in the center of the groove 2. The shape of the groove 2 and the bolt head 5 are both hexagonal structures. The bolt head 5 is limited and fixed by the groove 2 to prevent the locking nut 7 from rotating when the screw 6 and the bolt head 5 rotate, thereby preventing the bolt from being detached as a whole.

[0025] The depth of groove 2 is 5mm, and the overall length of bolt head 5 is 12mm, ensuring that groove 2 just grips bolt head 5 by approximately 5mm. A 1mm thickness is reserved at the connection between anti-loosening plate 1 and screw 6. This ensures a secure connection with the bolt while allowing for some play, while also ensuring no impact on the existing GW-type external locking device and U-shaped iron fitting 4. The center-to-center distance between bolt holes 3 is 122mm.

[0026] The anti-loosening plate 1 is made of stainless steel / carbon steel galvanized material to enhance its bearing capacity and durability.

[0027] The screw 6 cooperates with the locking nut 7, and the locking nut 7 is located on one side of the U-shaped iron part 4. An elastic washer 8 is provided on the contact surface between the locking nut 7 and the U-shaped iron part 4. The elastic deformation of the elastic washer 8 provides continuous pressure to prevent the locking nut 7 from loosening and reduce metal friction.

[0028] A first marking line 9 is provided on the anti-loosening plate 1, and the first marking line 9 is located directly above the groove 2. A second marking line 10 corresponding to the first marking line 9 is provided on the bolt head 5. When the installation is firm, the first marking line 9 and the second marking line 10 are connected. After the installation is completed, use a marker to mark the anti-loosening plate 1 and the bolt head 5 to form the first marking line 9 and the second marking line 10. When loosening occurs, a gap is generated between the two, which can intuitively display whether the bolt as a whole is loose, making it convenient for personnel to inspect and repair.

[0029] The outer surface of the locking nut 7 has anti-slip grooves, which is convenient for gripping when operated manually or with tools.

[0030] A rubber gasket is provided between the contact surface of the U-shaped iron piece 4 and the turnout to reduce direct friction between metals and extend service life.

[0031] Working principle: The anti-loosening plate 1 and the U-shaped iron piece 4 are located on both sides of the track and clamp them. The anti-loosening plate 1 and the U-shaped iron piece 4 are connected by bolts. A part of the bolt head 5 penetrates into the groove 2. Due to the shape fit, the bolt head 5 and the screw 6 can be prevented from rotating, thereby preventing them from driving the locking nut 7 to rotate, preventing the bolt from loosening and causing the point rail to be stuck and unable to move into place, causing the switch to lose its meter.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A turnout U-shaped iron bolt anti-loosening fastening device, comprising an anti-loosening plate (1), characterized in that: The anti-loosening plate (1) is matched with the U-shaped iron piece (4) and is respectively located on both sides of the track. Two grooves (2) for accommodating the bolt heads (5) are symmetrically provided on the side of the anti-loosening plate (1). The shape of the grooves (2) is adapted to the bolt heads (5). A bolt hole (3) for passing the screw rod (6) is provided in the center of the grooves (2).

2. A turnout U-shaped iron bolt anti-loosening and fastening device according to claim 1, characterized in that: The anti-loosening plate (1) has a length of 200 mm, a thickness of 6 mm and a height of 50 mm.

3. A turnout U-shaped iron bolt anti-loosening and fastening device according to claim 2, characterized in that: The groove (2) has a hexagonal structure, and the depth of the groove (2) is 5 mm.

4. A turnout U-shaped iron bolt anti-loosening and fastening device according to claim 3, characterized in that: The center distance of the bolt holes (3) is 122 mm.

5. A turnout U-shaped iron bolt anti-loosening and fastening device according to claim 4, characterized in that: The anti-loosening plate (1) is made of stainless steel / carbon steel galvanized material.

6. A turnout U-shaped iron bolt anti-loosening and fastening device according to claim 5, characterized in that: The screw (6) cooperates with a locking nut (7), the locking nut (7) is located on one side of the U-shaped iron piece (4), and an elastic washer (8) is provided on the contact surface between the locking nut (7) and the U-shaped iron piece (4).

7. A turnout U-shaped iron bolt anti-loosening and fastening device according to claim 6, characterized in that: The anti-loosening plate (1) is provided with a first marking line (9), and the first marking line (9) is located directly above the groove (2).

8. A turnout U-shaped iron bolt anti-loosening and fastening device according to claim 7, characterized in that: A second marking line (10) corresponding to the first marking line (9) is provided on the bolt head (5).

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