Anti-loosening bolt connecting piece for track

Abstract

The invention relates to the technical field of anti-loosening bolts, in particular to an anti-loosening bolt connecting piece for a rail. Comprising a bolt body, the bolt body is in threaded connection with a base plate, the bolt body is provided with a gasket, the gasket is fixedly connected with a plurality of limiting blocks distributed in the circumferential direction, the limiting blocks are embedded in the base plate, and the bolt body is in threaded connection with a nut; the multiple elastic plates are distributed in the circumferential direction and fixedly connected to the gasket, and the elastic plates are fixedly connected with flexible blocks; the number of the extrusion plates is the same as that of the elastic plates, and the extrusion plates and the elastic plates are fixedly connected to the nut. Through the arrangement of the extrusion plate, when the structure vibrates and the nut tends to rotate, the elastic plate abuts against the extrusion plate, and the external force needed by movement of the extrusion plate is increased, so that the external force needed by rotation of the nut is increased, the situation that the nut rotates due to small vibration force is prevented, and then the stability of the structure is enhanced; and the overhaul frequency of the structure is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of anti-loosening bolts, and in particular to an anti-loosening bolt connector for a track. Background Art

[0002] Anti-loosening bolt connectors for rails are one of the key components to ensure the safe operation of the railway system. These connectors are mainly used to fix and connect rail components. During the use of existing bolt connectors, when a train passes, the rail will be subjected to periodic impact and vibration, causing a slight relative displacement at the bolt connection, resulting in the rotation of the nut on the bolt, which will cause the nut to loosen slightly. Therefore, with the continuous passage of several trains, the operator needs to tighten the nut frequently, resulting in a very high maintenance frequency of the existing connectors. Once the operator fails to repair it in time, the slightly loose nut will lose its pre-tightening effect, which will lead to a larger amplitude of rail vibration. In the long run, it will cause the track to deviate and affect the quality of the track. Summary of the invention

[0003] In order to overcome the disadvantages mentioned in the above background, the present invention provides a bolt connection member for preventing loosening of a rail.

[0004] The technical solution of the present invention is: a bolt connector for preventing loosening of rails, comprising: A bolt body, wherein the bolt body is threadedly connected with a backing plate, a washer is installed on the bolt body, the washer is fixedly connected with a plurality of circumferentially distributed limit blocks, the limit blocks are embedded in the backing plate, the backing plate limits the washer through the limit blocks, the bolt body is threadedly connected with a nut, and the nut is located on the upper side of the washer; A plurality of elastic plates are circumferentially distributed and fixed to the upper side of the gasket, and the elastic plates are fixed with flexible blocks; The number of the extrusion plates is the same as that of the elastic plates, and they are all fixed to the lower side of the nut. Inclined surfaces are provided on both sides of the extrusion plates. The inclined surface on one side of the extrusion plates is used to squeeze the elastic plates to move, and the elastic plates are used to limit the inclined surface on the other side of the extrusion plates.

[0005] Preferably, the elastic force of the elastic plate gradually increases from a position close to the adjacent extrusion plate to a position far away from the adjacent extrusion plate, and one end of the elastic plate close to the adjacent extrusion plate is bent upward around its fixed position.

[0006] Preferably, a rough surface is provided on the lower side of the extrusion plate, and a rough surface is provided on the upper side of the gasket.

[0007] Preferably, the projection of the limit block on the pad is arc-shaped, the lower part of the limit block is made of flexible material, and the lower part of the limit block is provided with an inclined surface.

[0008] As a preferred embodiment, it also includes: The number of elastic conductive sheets is the same as that of the elastic plates and they are respectively fixed to adjacent flexible blocks, one end of the elastic conductive sheet is located between the adjacent elastic plate and the adjacent flexible block, and the other end of the elastic conductive sheet is located between the gasket and the adjacent flexible block.

[0009] Preferably, the extrusion plate is closer to the axis of the bolt body than the adjacent elastic conductive sheet.

[0010] As a preferred embodiment, it also includes: A shell having two parts rotatably connected to each other, one of which is fixed to the gasket, and the shell is made of a transparent material; There are two flexible members, which are respectively fixed to the adjacent shells. The flexible members are in contact with the lower part of the nut, and there is damping between the flexible members and the nut.

[0011] As a preferred embodiment, it also includes: The LED lamp is installed on the shell fixed to the gasket, the gasket is installed with a battery, the battery is electrically connected to the negative circuit of the LED lamp, the elastic conductive sheet is electrically connected to the battery, there is a distance between the positive circuit of the LED lamp and the adjacent elastic conductive sheet, and the elastic conductive sheet contacts the positive circuit of the LED lamp through its deformation.

[0012] As a preferred embodiment, it also includes: A limiting frame is slidably connected to the bolt body, the limiting frame is used to squeeze all the elastic plates, and there is damping between the limiting frame and the bolt body.

[0013] Preferably, a flexible ring is fixedly connected between the limiting frame and the bolt body.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention provides an extrusion plate. When the structure vibrates and the nut tends to rotate, the elastic plate supports the extrusion plate, increasing the external force required for the extrusion plate to move, thereby increasing the external force required for the nut to rotate, preventing the nut from rotating due to a small vibration force, thereby enhancing the stability of the structure and reducing the frequency of maintenance of the structure; 2. When the structure vibrates and causes the nut to rotate, the elastic conductive sheet bends and deforms. By observing the bending degree of the elastic conductive sheet, it can be known whether the nut is loose, without the need for close contact detection of each nut, thereby improving the efficiency of detection and maintenance of the structure; 3. When the elastic conductive sheet is bent and deformed, the LED light will light up to remind the operator that the nut is loose, and reduce the difficulty of maintenance for the operator at night, so that the operator can find the loose nut in time to improve the safety of the track; 4. The external force required for the elastic plate to deform is increased by the deadweight of the limit frame, and the force required for the limit frame to move upward is increased by using a flexible ring, thereby increasing the external force required for the elastic plate to deform, further increasing the external force required for the extrusion plate to move, and thus enhancing the stability of the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the pad of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the nut of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the housing of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting frame of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the elastic conductive sheet of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the elastic plate of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the elastic plate and the extrusion plate of the present invention.

[0016] The markings in the accompanying drawings are as follows: 1-bolt body, 2-pad, 3-washer, 301-limiting block, 4-nut, 5-elastic plate, 501-flexible block, 6-extrusion plate, 7-elastic conductive sheet, 8-shell, 801-flexible part, 9-LED lamp, 901-battery, 10-limiting frame, 11-flexible ring. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0018] A bolt connection for preventing loosening of rails, such as Figure 1-Figure 8As shown, it includes: a bolt body 1, the bolt body 1 is made of alloy steel with high yield strength and tensile strength to improve the strength of the rail connector, the bolt body 1 is threadedly connected with a pad 2, the bolt body 1 is equipped with a washer 3 that fits the pad 2, and the lower side of the washer 3 is fixed with four circumferentially distributed limit blocks 301, the limit blocks 301 are embedded in the pad 2, and the projection of the limit blocks 301 on the pad 2 is an arc, which increases the contact area between the limit blocks 301 and the pad 2, so that the limit blocks 301 are restricted in the pad 2. When the structure vibrates, the limit block 301 is prevented from rotating. The lower part of the limit block 301 is made of flexible material, and the lower part of the limit block 301 is provided with an inclined surface, so that the limit block 301 is embedded in the pad 2. The pad 2 limits the washer 3 through the limit block 301. The bolt body 1 is threadedly connected with a nut 4, and the nut 4 is located on the upper side of the washer 3; the elastic plate 5 has a plurality of circumferentially distributed ones, and they are all fixed to the upper side of the washer 3. The fixing part of the elastic plate 5 is located on it, away from the adjacent extrusion plate 6, and the elastic force of the elastic plate 5 is self-reliant. The elastic plate 5 gradually increases from the position near the adjacent extrusion plate 6 to the position away from it. One end of the elastic plate 5 near the adjacent extrusion plate 6 is bent upward around its fixed connection. Before the nut 4 is installed, the elastic plate 5 is tilted upward as a whole. When the nut 4 is installed (the state of the elastic plate 5 after installation is shown in the attached figure), the elastic plate 5 is pressed by the nut 4, and the elastic plate 5 is bent away from the position of the adjacent extrusion plate 6. The elastic plate 5 is fixedly connected with a flexible block 501. A plurality of baffle portions are provided on the washer 3, and the baffle portions wrap the adjacent flexible blocks 501; the extrusion plates 6, the number of which is the same as that of the elastic plate 5 The number of elastic plates 5 is the same, and they are all fixed to the lower side of the nut 4. Inclined surfaces are provided on both sides of the extrusion plate 6. The inclined surface on one side of the extrusion plate 6 is used to squeeze the elastic plate 5 to move, and the elastic plate 5 is used to limit the inclined surface on the other side of the extrusion plate 6. A rough surface is provided on the lower side of the extrusion plate 6, and a rough surface is provided on the upper side of the washer 3, so that there is damping between the extrusion plate 6 and the washer 3. When the present structure vibrates and the nut 4 tends to rotate, the damping between the extrusion plate 6 and the washer 3 is used to increase the external force required for the rotation of the extrusion plate 6.

[0019] The specific working principle is as follows: When the operator needs to use this structure to connect the guide rail, the operator installs the pad 2 on the track of the track, screws the bolt body 1 into the rail sleeper and pad 2 of the track in turn, then puts the washer 3 on the bolt body 1, and makes all the limit blocks 301 be embedded in the pad 2. The pad 2 limits the washer 3 through the limit blocks 301 to prevent the washer 3 from rotating when the structure vibrates. Then the operator threads the nut 4 on the bolt body 1. During the installation of the nut 4, the nut 4 rotates and drives all the extrusion plates 6 to rotate. As the nut 4 rotates, the extrusion plates 6 gradually contact and squeeze the elastic The elastic plate 5 makes the elastic plate 5 bend around its fixed connection. When the extrusion plate 6 moves to lose contact with the elastic plate 5, the elastic plate 5 rebounds and fits tightly against the nut 4. The elastic plate 5 is pressed by the nut 4, so that the upper side surfaces of all the extrusion plates 6 and the upper side surfaces of all the elastic plates 5 are at the same horizontal height, and the extrusion plate 6 is in contact with the elastic plate 5. When the structure vibrates and the nut 4 tends to rotate, the elastic plate 5 and the flexible block 501 support the extrusion plate 6, increasing the external force required for the movement of the extrusion plate 6, thereby increasing the external force required for the rotation of the nut 4, preventing the nut 4 from rotating due to tiny vibration forces, and thereby enhancing the stability of the structure.

[0020] like Figure 4-Figure 7 As shown, it also includes: elastic conductive sheets 7, the number of which is the same as the number of elastic plates 5, and are respectively fixed to adjacent flexible blocks 501, one end of the elastic conductive sheet 7 is located between the adjacent elastic plate 5 and the adjacent flexible block 501, and the other end of the elastic conductive sheet 7 is located between the gasket 3 and the adjacent flexible block 501. After one end of the elastic plate 5 is warped upward, the elastic plate 5 squeezes the adjacent flexible block 501 and the adjacent elastic conductive sheet 7, so that both the flexible block 501 and the elastic conductive sheet 7 are deformed, and the extrusion plate 6 is closer to the axis of the bolt body 1 than the adjacent elastic conductive sheet 7, so that the extrusion plate 6 does not come into contact with the elastic conductive sheet 7 during movement.

[0021] like Figure 1-Figure 4 As shown, it also includes: a shell 8, having two mutually rotatably connected, the rear shell 8 is fixed to the gasket 3, and the shell 8 is made of a transparent material, such as a transparent plastic material; a flexible member 801, having two, respectively fixed to adjacent shells 8, the flexible member 801 is fitted with the lower part of the nut 4, and is used to provide a seal between the shell 8 and the nut 4 to reduce the probability of external moisture (such as rainwater) entering the shell 8, and there is damping between the flexible member 801 and the nut 4, which applies resistance to the rotation of the nut 4.

[0022] The specific working principle is as follows: When the structure vibrates and causes the nut 4 to rotate, the nut 4 squeezes the elastic plate 5 through the squeezing plate 6, causing the elastic plate 5 to deform. The flexible block 501 also deforms, and the elastic plate 5 squeezes the elastic conductive sheet 7 to deform, causing the elastic conductive sheet 7 to bend. When the operator inspects the track, he can observe the degree of bending of the elastic conductive sheet 7 through the transparent shell 8 to find out whether the nut 4 is loose, without the need for close contact detection of each nut 4, thereby improving the efficiency of inspection and maintenance of the structure.

[0023] During use of the present structure, the nut 4 and the bolt body 1 are sealed by the shell 8 and the flexible member 801 to prevent and reduce the probability of external moisture (such as rainwater) entering the shell 8 .

[0024] like Figure 3-Figure 6 As shown, it also includes: an LED lamp 9, which is installed on an adjacent shell 8 fixed to the gasket 3, and the gasket 3 is installed with a battery 901, which can be a button battery, and the battery 901 is electrically connected to the negative electrode circuit of the LED lamp 9, and the elastic conductive sheet 7 is electrically connected to the battery 901. There is a distance between the positive electrode circuit of the LED lamp 9 and the adjacent elastic conductive sheet 7, and the elastic conductive sheet 7 contacts the positive electrode circuit of the LED lamp 9 through its deformation. When the elastic conductive sheet 7 is squeezed by the adjacent elastic plate 5 and deformed, the middle part of the elastic conductive sheet 7 bends toward the positive electrode circuit of the LED lamp 9. After the positive electrode circuit of the LED lamp 9 contacts the adjacent elastic conductive sheet 7, the positive electrode circuit of the LED lamp 9 is electrically connected to the battery 901 through the adjacent elastic conductive sheet 7.

[0025] The specific working principle is as follows: When the structure vibrates and causes the nut 4 to rotate, the nut 4 squeezes the elastic plate 5 through the squeezing plate 6, causing the elastic plate 5 to deform and squeeze the elastic conductive sheet 7 to deform. The middle part of the elastic conductive sheet 7 bends toward the positive electrode line of the LED lamp 9, and the middle part of the elastic conductive sheet 7 moves to contact the positive electrode line of the LED lamp 9. The LED lamp 9 lights up to remind the operator that the nut 4 is loose, thereby reducing the difficulty of maintenance for the operator at night and enabling the operator to promptly discover the loose nut 4 to improve the safety of the track.

[0026] like Figure 4 and Figure 8 As shown, it also includes: a limit frame 10, which is slidably connected to the bolt body 1. The limit frame 10 is composed of a vertical rod in the middle and a branch rod on the lower side. The washer 3 and the pad 2 are both provided with a plurality of grooves for the branch rods on the limit frame 10 to pass through. The limit frame 10 is used to squeeze all flexible blocks 501. There is damping between the limit frame 10 and the bolt body 1, which is used to apply resistance to the sliding of the limit frame 10. A flexible ring 11 is fixed between the limit frame 10 and the bolt body 1, and resistance to upward movement is applied to the limit frame 10 through the elastic deformation of the flexible ring 11 itself.

[0027] The specific working principle is as follows: In the process of the extrusion plate 6 extruding the elastic plate 5, the elastic plate 5 squeezes the branch rod of the limit frame 10, so that the limit frame 10 has a tendency to move upward. The external force required for the deformation of the elastic plate 5 is increased through the deadweight of the limit frame 10, and the flexible ring 11 is used to increase the force required for the limit frame 10 to move upward, thereby increasing the external force required for the deformation of the elastic plate 5, further increasing the external force required for the movement of the extrusion plate 6, and thereby enhancing the stability of the nut 4.

[0028] When the operator replaces or disassembles this structure, the operator opens the shell 8 so that the flexible part 801 no longer fits with the lower part of the nut 4, the operator presses the limit frame 10 downward to deform the flexible ring 11, the limit frame 10 squeezes the elastic plate 5 to bend downward, the elastic plate 5 drives the flexible block 501 to bend downward, the elastic plate 5 no longer blocks the extrusion plate 6, the operator twists the nut 4 to make the nut 4 disengage from the bolt body 1, and then the operator loosens the limit frame 10, the limit frame 10 and the flexible ring 11 are reset, the operator pulls out the washer 3 upward, and finally pulls out the bolt body 1 downward, repairs the disassembled structure, and then repeats the above installation steps to install the new structure on the track.

[0029] The above is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to technicians in this professional field.

Claims

1. A bolt connector for preventing loosening of rails, characterized in that: Included are: A bolt body (1), the bolt body (1) being threadedly connected to a backing plate (2), the bolt body (1) being mounted with a washer (3), the washer (3) being fixedly connected to a plurality of circumferentially distributed limiting blocks (301), the limiting blocks (301) being embedded in the backing plate (2), the backing plate (2) limiting the position of the washer (3) through the limiting blocks (301), the bolt body (1) being threadedly connected to a nut (4), the nut (4) being located on the upper side of the washer (3); A plurality of elastic plates (5) distributed in a circumferential direction and all fixedly connected to the upper side of the gasket (3); the elastic plate (5) being fixedly connected to a flexible block (501); The number of the extrusion plates (6) is the same as the number of the elastic plates (5), and both are fixed to the lower side of the nut (4). Inclined surfaces are provided on both sides of the extrusion plate (6). The inclined surface on one side of the extrusion plate (6) is used to squeeze the elastic plate (5) to move, and the elastic plate (5) is used to limit the inclined surface on the other side of the extrusion plate (6).

2. The anti-loosening bolt connector for rail according to claim 1, characterized in that: The elastic force of the elastic plate (5) gradually increases from a position close to the adjacent extrusion plate (6) to a position far away from the adjacent extrusion plate (6), and one end of the elastic plate (5) close to the adjacent extrusion plate (6) is bent upward around its fixed connection.

3. The anti-loosening bolt connector for rail according to claim 2, characterized in that: The lower side of the extrusion plate (6) is provided with a rough surface, and the upper side of the gasket (3) is provided with a rough surface.

4. The anti-loosening bolt connector for rail according to claim 1, characterized in that: The projection of the limit block (301) on the pad (2) is arc-shaped, the lower part of the limit block (301) is made of a flexible material, and the lower part of the limit block (301) is provided with an inclined surface.

5. The anti-loosening bolt connector for rail according to claim 2, characterized in that: Also included are: The number of elastic conductive sheets (7) is the same as the number of the elastic plates (5), and they are respectively fixed to adjacent flexible blocks (501); one end of the elastic conductive sheet (7) is located between the adjacent elastic plate (5) and the adjacent flexible block (501); and the other end of the elastic conductive sheet (7) is located between the gasket (3) and the adjacent flexible block (501).

6. The anti-loosening bolt connector for rail according to claim 5, characterized in that: The extrusion plate (6) is closer to the axis of the bolt body (1) than the adjacent elastic conductive sheet (7).

7. The anti-loosening bolt connector for rail according to claim 5, characterized in that: Also included are: A shell (8) having two parts rotatably connected to each other, one of the shells (8) being fixed to the gasket (3), and the shell (8) being made of a transparent material; There are two flexible members (801), which are respectively fixed to adjacent shells (8); the flexible members (801) are in contact with the lower part of the nut (4); and damping exists between the flexible members (801) and the nut (4).

8. The anti-loosening bolt connector for rail according to claim 7, characterized in that: Also included are: An LED lamp (9) is mounted on the housing (8) fixedly connected to the gasket (3); the gasket (3) is mounted with a battery (901); the battery (901) is electrically connected to the negative line of the LED lamp (9); the elastic conductive sheet (7) is electrically connected to the battery (901); there is a distance between the positive line of the LED lamp (9) and the adjacent elastic conductive sheet (7); the elastic conductive sheet (7) contacts the positive line of the LED lamp (9) through its deformation.

9. The anti-loosening bolt connector for rail according to claim 5, characterized in that: Also included are: A limiting frame (10) is slidably connected inside the bolt body (1); the limiting frame (10) is used to compress all the elastic plates (5); and damping exists between the limiting frame (10) and the bolt body (1).

10. The anti-loosening bolt connector for rail according to claim 9, characterized in that: A flexible ring (11) is fixedly connected between the limiting frame (10) and the bolt body (1).

Images