U-shaped lock bolt for connecting axles

Abstract

The utility model relates to the technical field of U-shaped lock bolts, in particular to a U-shaped lock bolt for connecting an axle, which comprises a U-shaped screw and an axle pressing plate, abutting blocks are arranged on the upper surfaces of two first nuts, a first anti-rotation device is arranged between each abutting block and the axle pressing plate, and a second anti-rotation device is arranged between each abutting block and the axle pressing plate. And second anti-rotation devices are arranged at the lower ends of the two U-shaped screw rods. According to the first anti-rotation device, the locking nut is screwed, so that the base and the clamping block move towards the clamping groove, the clamping block extends into the clamping groove, the abutting block is clamped, and the abutting block is prevented from being loosened due to vibration; the center of the tail end of the U-shaped screw is not provided with a mounting inner hole, so that the strength of the U-shaped screw is prevented from being reduced, and the risk of breakage of the U-shaped screw is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of U-shaped anti-loosening bolts, and in particular to a U-shaped anti-loosening bolt for connecting vehicle axles. Background Technology

[0002] The U-bolts connecting the axle are used to fix the leaf spring and the connecting axle; the leaf spring is fixed to the axle and plays a role in shock absorption.

[0003] For example, the authorized announcement number "CN205780207U" is named a U-shaped anti-loosening bolt for connecting axles. By setting a stop bolt, it effectively solves the problem that the U-shaped bolt causes large vibrations in the car during use, which causes the bolt and nut to loosen and the axle leaf spring to fail to play a shock-absorbing role.

[0004] The above-mentioned and existing technologies have the following defects: the U-shaped screw of the anti-loosening bolt has an installation inner hole at the center of its end, which reduces the strength of the U-shaped screw and makes it prone to breakage. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a U-shaped anti-loosening bolt for connecting vehicle axles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a U-shaped anti-loosening bolt for connecting axles, including a U-shaped screw and an axle pressure plate. Both ends of the U-shaped screw slide through the axle pressure plate and are threaded with a first nut. Below each of the two first nuts, there is a second nut threadedly connected to the U-shaped screw. The upper surface of each of the two first nuts is provided with a retaining block. A first anti-rotation device is provided between each of the two retaining blocks and the axle pressure plate. A second anti-rotation device is provided at the lower end of each of the two U-shaped screws.

[0008] Preferably, the first anti-rotation device includes a mounting block, a first slide rod slidably connected inside the mounting block, a base provided at one end of the first slide rod near the abutment block, a snap-fit ​​block provided on one side surface of the base near the abutment block, a second slide rod slidably connected to the mounting block on one side surface of the snap-fit ​​block, a first mounting cap provided at one end of the first slide rod away from the abutment block, a spring provided between the mounting block and the first mounting cap, the spring being sleeved on the first slide rod, a second mounting cap provided at one end of the second slide rod away from the abutment block, a locking nut threadedly connected to the surface of the second slide rod, the locking nut being disposed between the mounting block and the base, and a plurality of snap-fit ​​grooves uniformly arranged in a ring on the surface of the abutment block, one end of the snap-fit ​​block extending into the snap-fit ​​groove.

[0009] Preferably, the second anti-rotation device includes a first mounting through hole, which is opened on the lower surface of the U-shaped screw. A third slide rod is slidably connected inside the first mounting through hole. A limiting block is provided at one end of the third slide rod, and a second mounting through hole is opened at the other end of the third slide rod. An elastic snap-fit ​​component is engaged inside the second mounting through hole.

[0010] Preferably, the upper surface of the axle pressure plate is provided with multiple anti-slip grooves.

[0011] Preferably, an elastic washer is provided between the first nut and the second nut, and the elastic washer is sleeved on the U-shaped screw.

[0012] Preferably, the axle pressure plate and the mounting block have connecting blocks on their side surfaces, and the connecting blocks are threaded with protective covers.

[0013] This utility model proposes a U-shaped anti-loosening bolt for connecting axles, which has the following advantages: The first anti-rotation device, by tightening the locking nut, moves the base and the locking block towards the locking groove. The locking block extends into the locking groove to lock the abutment block, preventing it from loosening due to vibration. The second anti-rotation device, by passing a third sliding rod through the first mounting through hole and then the elastic locking member through the second mounting through hole, prevents the second nut from slipping out of the U-shaped bolt even if it loosens due to vibration. The U-shaped bolt of this anti-loosening bolt does not have an inner mounting hole at its end center, thus avoiding a reduction in the strength of the U-shaped bolt and preventing the risk of breakage. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the first nut, the clamping block, and the snap-fit ​​groove of this utility model;

[0016] Figure 3 This is an enlarged view of position A in this utility model;

[0017] Figure 4 This is an enlarged view of position B of this utility model.

[0018] In the diagram: 1. U-shaped screw; 2. Axle pressure plate; 3. First nut; 4. Second nut; 5. Clamping block; 6. Mounting block; 7. First slide rod; 8. Base; 9. Snap-fit ​​block; 10. Second slide rod; 11. First mounting cap; 12. Spring; 13. Second mounting cap; 14. Locking nut; 15. Snap-fit ​​groove; 16. First mounting through hole; 17. Third slide rod; 18. Limiting block; 19. Second mounting through hole; 20. Elastic snap-fit ​​component; 21. Anti-slip groove; 22. Elastic gasket; 23. Connecting block; 24. Protective cover. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-4 A U-shaped anti-loosening bolt for connecting a vehicle axle includes a U-shaped screw 1 and a vehicle axle pressure plate 2. Both ends of the U-shaped screw 1 slide through the vehicle axle pressure plate 2 and are threadedly connected to a first nut 3. A second nut 4 is provided below each of the two first nuts 3 and is threadedly connected to the U-shaped screw 1. A clamping block 5 is provided on the upper surface of each of the two first nuts 3. A first anti-rotation device is provided between each of the two clamping blocks 5 and the vehicle axle pressure plate 2. A second anti-rotation device is provided at the lower end of each of the two U-shaped screws 1.

[0021] The first anti-rotation device includes a mounting block 6, with a first slide rod 7 slidably connected inside the mounting block 6. A base 8 is provided at one end of the first slide rod 7 near the abutment block 5. A snap-fit ​​block 9 is provided on the side surface of the base 8 near the abutment block 5. A second slide rod 10 is provided on the side surface of the snap-fit ​​block 9 near the mounting block 6 and slidably connected to the mounting block 6. A first mounting cap 11 is provided at one end of the first slide rod 7 away from the abutment block 5. A spring 12 is provided between the mounting block 6 and the first mounting cap 11. The spring 12 is sleeved on the first slide rod 7. A second mounting cap 13 is provided at one end of the second slide rod 10 away from the abutment block 5. A locking nut 14 is threadedly connected to the surface of the second slide rod 10. The locking nut 14 is located between the mounting block 6 and the base 8. A plurality of snap-fit ​​grooves 15 are evenly provided in a ring on the surface of the abutment block 5. One end of the snap-fit ​​block 9 extends into the snap-fit ​​groove 15.

[0022] The second anti-rotation device includes a first mounting through hole 16, which is opened on the lower surface of the U-shaped screw 1. A third slide rod 17 is slidably connected inside the first mounting through hole 16. A limit block 18 is provided at one end of the third slide rod 17, and a second mounting through hole 19 is opened at the other end of the third slide rod 17. An elastic snap-fit ​​component 20 is snapped inside the second mounting through hole 19.

[0023] The upper surface of the axle pressure plate 2 is provided with multiple anti-slip grooves 21. The multiple anti-slip grooves 21 make it less likely for the axle pressure plate 2 to slip with the axle.

[0024] An elastic washer 22 is provided between the first nut 3 and the second nut 4, and the elastic washer 22 is sleeved on the U-shaped screw 1. Through the elastic action of the elastic washer 22, the first nut 3 and the second nut 4 are pressed together to prevent the first nut 3 and the second nut 4 from becoming loose.

[0025] The axle pressure plate 2 and the mounting block 6 are provided with connecting blocks 23 on their side surfaces, and protective covers 24 are threaded onto the surface of the connecting blocks 23. The protective covers 24 serve to block dust and water, extending the service life of the first anti-rotation device.

[0026] Working principle: During installation, after tightening the first nut 3 and the second nut 4, the first anti-rotation device, by tightening the locking nut 14, moves the base 8 and the locking block 9 towards the locking groove 15. The locking block 9 extends into the locking groove 15 to lock the abutment block 5, preventing the abutment block 5 from loosening due to vibration. The second anti-rotation device, by passing the third slide rod 17 through the first mounting through hole 16 and then the elastic locking member 20 through the second mounting through hole 19, prevents the second nut 4 from slipping out of the U-shaped screw 1 even if it becomes loose due to vibration. The end center of the U-shaped screw 1 of this anti-loosening bolt does not have an inner mounting hole, thus avoiding a reduction in the strength of the U-shaped screw 1 and preventing the risk of breakage.

[0027] When it is necessary for the locking block 9 to disengage from the locking groove 15, the locking nut 14 is turned in the opposite direction. Under the compression force of the spring 12, the locking block 9 is moved away from the locking groove 15, thus disengaging the locking block 9 from the locking groove 15. When it is necessary to remove the third slide rod 17, the elastic locking member 20 is pried open and removed from the second mounting through hole 19. Then the third slide rod 17 can be removed from the first mounting through hole 16.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A U-shaped anti-loosening bolt for connecting an axle, comprising a U-shaped bolt (1) and an axle pressure plate (2), characterized in that, Both ends of the U-shaped screw (1) slide through the axle pressure plate (2) and are threadedly connected to the first nut (3). Below the two first nuts (3), there is a second nut (4) threadedly connected to the U-shaped screw (1). The upper surface of the two first nuts (3) is provided with a retaining block (5). The two retaining blocks (5) are provided with a first anti-rotation device between them and the axle pressure plate (2). The lower end of the two U-shaped screws (1) is provided with a second anti-rotation device.

2. The U-shaped anti-loosening bolt for connecting axles according to claim 1, characterized in that, The first anti-rotation device includes a mounting block (6), inside which a first slide rod (7) is slidably connected. A base (8) is provided at one end of the first slide rod (7) near the abutment block (5). A snap-fit ​​block (9) is provided on one side of the base (8) near the abutment block (5). A second slide rod (10) is slidably connected to the mounting block (6) on one side of the snap-fit ​​block (9). A first mounting cap (11) is provided at the end of the first slide rod (7) away from the abutment block (5). A spring (12) is provided between the block (6) and the first mounting cap (11). The spring (12) is sleeved on the first slide rod (7). The second slide rod (10) is provided with a second mounting cap (13) at the end away from the abutment block (5). A locking nut (14) is threaded on the surface of the second slide rod (10). The locking nut (14) is provided between the mounting block (6) and the base (8). The abutment block (5) is provided with a plurality of snap-fit ​​grooves (15) evenly arranged in a ring on its surface. One end of the snap-fit ​​block (9) extends into the snap-fit ​​groove (15).

3. The U-shaped anti-loosening bolt for connecting axles according to claim 1, characterized in that, The second anti-rotation device includes a first mounting through hole (16), which is opened on the lower surface of the U-shaped screw (1). A third slide rod (17) is slidably connected inside the first mounting through hole (16). A limiting block (18) is provided at one end of the third slide rod (17), and a second mounting through hole (19) is opened at the other end of the third slide rod (17). An elastic snap-fit ​​member (20) is snapped inside the second mounting through hole (19).

4. The U-shaped anti-loosening bolt for connecting axles according to claim 1, characterized in that, The upper surface of the axle pressure plate (2) is provided with multiple anti-slip grooves (21).

5. The U-shaped anti-loosening bolt for connecting axles according to claim 1, characterized in that, An elastic washer (22) is provided between the first nut (3) and the second nut (4), and the elastic washer (22) is sleeved on the U-shaped screw (1).

6. The U-shaped anti-loosening bolt for connecting axles according to claim 2, characterized in that, The axle pressure plate (2) and the mounting block (6) are provided with connecting blocks (23) on their side surfaces, and the connecting blocks (23) are threaded with protective covers (24).

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