Construction machinery traction connecting device

By using the locking rod, ball column, and threaded rod structure of the upper and lower locking blocks, the problems of inconvenient disassembly and difficult angle adjustment of existing construction machinery traction connection devices are solved, realizing simple disassembly and flexible angle adjustment, and providing a buffering effect.

CN223494205UActive Publication Date: 2025-10-31TIBET JIANHUA CONSTRUCTION CO LTD
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Patent Information

Application Number
CN202423272626.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-10-31
Estimated Expiration
2034-12-30

AI Technical Summary

Technical Problem

Existing construction machinery traction connection devices are inconvenient to disassemble and adjust in terms of angle, and require precise alignment of the traction holes of the front and rear vehicle bodies.

Method used

The design employs an upper and lower locking block, combined with a snap-fit ​​rod, ball joint, and threaded rod structure, to achieve sliding snap-fit ​​and threaded connection of the snap-fit ​​sleeve. This allows the connecting rod to be adjusted in any direction, and provides a buffering effect through a limiting hole and a spring.

Benefits of technology

It simplifies the disassembly process, facilitates angle adjustment, reduces the requirements for alignment between the front and rear vehicle bodies, and provides a cushioning function.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a building machinery traction connecting device which comprises an upper locking block and a lower locking block, the lower locking block is located below the upper locking block, two sets of first sliding grooves are formed in the upper locking block, a first spring is arranged in each set of first sliding groove, a clamping rod is connected in each set of first sliding groove in a sliding mode, and a second spring is arranged in each set of first sliding groove. The clamping rods are located below the first springs, and the lower ends of all the clamping rods are in threaded connection with clamping sleeves. According to the utility model, the clamping sleeve can be in threaded connection with the lower end, during use, the connecting rod is firstly sleeved at the spherical column on the clamping rod, the lower locking block is rotated, the clamping sleeve is firstly contacted with the second sliding groove and slides to the clamping hole along with the second sliding groove for clamping, and the upper locking block can be taken out upwards only by pushing the clamping sleeve and then rotating the lower locking block when separation is needed. Operation is easy and convenient, the spherical column can facilitate rotation of the connecting rod by a certain angle in any direction, and angle adjustment of the device at the connecting position of turning and uphill and downhill is facilitated.
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Description

Technical Field

[0001] This utility model relates to the field of traction connection devices, and in particular to a traction connection device for construction machinery. Background Technology

[0002] Construction machinery is often placed on the truck bed and needs to be connected to the driver's body or the truck bed behind it.

[0003] Existing construction machinery traction connection devices have certain drawbacks during traction. The existing traction method requires bolt insertion and then fixing with nuts. Firstly, this method is troublesome to disassemble. Secondly, this method requires the traction holes of the front and rear vehicles to be aligned before traction, which is difficult to achieve with manual driving. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a traction connection device for construction machinery.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a construction machinery traction connection device, comprising an upper locking block and a lower locking block, wherein the lower locking block is located below the upper locking block, the upper locking block is provided with two sets of first sliding grooves, each set of first sliding grooves is provided with a first spring, each set of first sliding grooves is slidably connected with a snap-fit ​​rod, and the snap-fit ​​rod is located below the first spring, the lower end of each set of snap-fit ​​rods is threadedly connected with a snap-fit ​​sleeve, the lower locking block is provided with two sets of second sliding grooves, the upper end of the lower locking block is provided with two sets of snap-fit ​​holes, and each set of snap-fit ​​holes communicates with a set of second sliding grooves, and the snap-fit ​​holes are located directly below the snap-fit ​​sleeves, each set of snap-fit ​​holes is provided with a notch below it, each set of snap-fit ​​rods is fixedly connected with a spherical column, and each set of snap-fit ​​rods is provided with a connecting rod on one side.

[0006] As a further description of the above technical solution:

[0007] One end of the connecting rod is provided with a limiting hole, and the spherical column matches the limiting hole. A threaded rod is slidably connected to the outside of each set of connecting rods, and a second spring is fixedly connected between the connecting rod and the threaded rod.

[0008] As a further description of the above technical solution:

[0009] The upper locking block is provided with a first groove, and an upper bolt is provided in the first groove. The bottom end of the lower locking block is provided with a second groove, and a lower threaded sleeve is provided in the second groove. The upper bolt and the lower threaded sleeve are threadedly connected.

[0010] This utility model has the following beneficial effects:

[0011] 1. This utility model uses a snap-fit ​​sleeve to thread the snap-fit ​​sleeve to the lower end. When in use, first put the connecting rod into the ball-shaped post on the snap-fit ​​rod, and rotate the lower locking block. At this time, the snap-fit ​​sleeve will first contact the second sliding groove and slide with the second sliding groove to the snap-fit ​​hole to snap-fit. When separation is needed, simply push the snap-fit ​​sleeve and then rotate the lower locking block to remove the upper locking block. It is simple and convenient to use. The ball-shaped post allows the connecting rod to rotate at a certain angle in any direction, which is convenient for adjusting the angle of the device at the turning and uphill / downhill connection points.

[0012] 2. This utility model has a threaded rod that can be threaded to the traction hole of the device to be connected. The connecting rod can slide a certain distance on the threaded rod. When the front and rear vehicle bodies are connected, the connecting rod can be pulled and the locking rod can be inserted into the limiting hole. Compared with the direct pin traction method, there is no need to specially adjust the distance between the front and rear vehicle bodies. It is only necessary for the front and rear vehicle bodies to be within a suitable range. At the same time, the second spring can also provide a certain buffering effect when the front vehicle brakes. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of a traction connection device for construction machinery proposed in this utility model;

[0014] Figure 2 This is a partial perspective view of a traction connection device for construction machinery proposed in this utility model.

[0015] Legend:

[0016] 1. Upper locking block; 2. First sliding groove; 3. First recess; 4. Upper bolt; 5. Limiting hole; 6. Threaded rod; 7. Connecting rod; 8. Lower locking block; 9. Second recess; 10. Lower threaded sleeve; 11. Snap-fit ​​hole; 12. Notch groove; 13. Snap-fit ​​sleeve; 14. Snap-fit ​​rod; 15. Spherical column; 16. First spring; 17. Second spring; 18. Second sliding groove. Detailed Implementation

[0017] Reference Figure 1-2This utility model provides an embodiment of a construction machinery traction connection device, comprising an upper locking block 1 and a lower locking block 8. The lower locking block 8 is located below the upper locking block 1. The upper locking block 1 has two sets of first sliding grooves 2, each set of first sliding grooves 2 containing a first spring 16. Each set of first sliding grooves 2 is slidably connected to a locking rod 14, which is located below the first spring 16. The lower end of each locking rod 14 is threadedly connected to a locking sleeve 13. The lower locking block 8 has two sets of second sliding grooves 18, and the upper end of the lower locking block 8 has two sets of locking holes 11, each set of locking holes 11 communicating with a set of second sliding grooves 18. The locking holes 11 are located directly below the locking sleeve 13. A notch 12 is provided below the hole 11. A spherical post 15 is fixedly connected to each set of snap-fit ​​rods 14. A connecting rod 7 is provided on one side of each set of snap-fit ​​rods 14. The snap-fit ​​sleeve 13 can be threaded to the lower end. When in use, first put the connecting rod 7 into the spherical post 15 on the snap-fit ​​rod 14, and rotate the lower locking block 8. At this time, the snap-fit ​​sleeve 13 will first contact the second sliding groove 18 and slide with the second sliding groove 18 to snap-fit ​​at the snap-fit ​​hole 11. When separation is needed, simply push the snap-fit ​​sleeve 13 and then rotate the lower locking block 8 to remove the upper locking block 1. The operation is simple and convenient. The spherical post 15 can facilitate the rotation of the connecting rod 7 at a certain angle in any direction, which is convenient for the angle adjustment of the device at the turning and uphill / downhill connection points.

[0018] One end of the connecting rod 7 is provided with a limiting hole 5, and the spherical post 15 matches the limiting hole 5. A threaded rod 6 is slidably connected to the outside of each set of connecting rods 7. A second spring 17 is fixedly connected between the connecting rod 7 and the threaded rod 6. The threaded rod 6 can be threadedly connected to the traction hole of the device to be connected. The connecting rod 7 can slide a certain distance on the threaded rod 6. When the front and rear vehicle bodies are connected, the connecting rod 7 can be pulled and the locking rod 14 can be inserted into the limiting hole 5. Compared with the direct pin traction method, it is not necessary to specially adjust the distance between the front and rear vehicle bodies. It is only necessary for the front and rear vehicle bodies to be within a suitable range. At the same time, the second spring 17 can also provide a certain buffering effect when the front vehicle brakes.

[0019] The upper locking block 1 has a first groove 3, and an upper bolt 4 is installed in the first groove 3. The bottom end of the lower locking block 8 has a second groove 9, and a lower threaded sleeve 10 is installed in the second groove 9. The upper bolt 4 and the lower threaded sleeve 10 are threadedly connected.

[0020] Working principle: When in use, firstly, the two sets of threaded rods 6 are threaded to the traction holes of the front and rear vehicle bodies respectively. Pull the two sets of connecting rods 7 and put the two sets of limiting holes 5 into the ball-shaped post 15 on the locking rod 14 respectively. Rotate the lower locking block 8. At this time, the locking sleeve 13 will first contact the second sliding groove 18 and slide with the second sliding groove 18 to the locking hole 11 to lock. When separation is needed, simply push the locking sleeve 13 and then rotate the lower locking block 8 to remove the upper locking block 1. It is simple and convenient to use. The ball-shaped post 15 can make the connecting rod 7 rotate at a certain angle in any direction, which is convenient for the device to adjust the angle at the turning and uphill / downhill connection.

Claims

1. A traction connection device for construction machinery, comprising an upper locking block (1) and a lower locking block (8), characterized in that: The lower locking block (8) is located below the upper locking block (1). The upper locking block (1) has two sets of first sliding grooves (2). Each set of first sliding grooves (2) contains a first spring (16). Each set of first sliding grooves (2) is slidably connected to a locking rod (14), which is located below the first spring (16). The lower end of each locking rod (14) is threadedly connected to a locking sleeve (13). The lower locking block (8) is provided with… Two sets of second sliding grooves (18), the upper end of the lower locking block (8) is provided with two sets of snap-fit ​​holes (11), and each set of snap-fit ​​holes (11) is connected to a set of second sliding grooves (18), and the snap-fit ​​holes (11) are located directly below the snap-fit ​​sleeve (13). A notch (12) is provided below each set of snap-fit ​​holes (11), and a spherical column (15) is fixedly connected to each set of snap-fit ​​rods (14). A connecting rod (7) is provided on one side of each set of snap-fit ​​rods (14).

2. The traction connection device for construction machinery according to claim 1, characterized in that: One end of the connecting rod (7) is provided with a limiting hole (5), and the spherical column (15) matches the limiting hole (5). A threaded rod (6) is slidably connected to the outside of each set of connecting rods (7), and a second spring (17) is fixedly connected between the connecting rod (7) and the threaded rod (6).

3. The traction connection device for construction machinery according to claim 1, characterized in that: The upper locking block (1) is provided with a first groove (3), and an upper bolt (4) is provided in the first groove (3). The bottom end of the lower locking block (8) is provided with a second groove (9), and a lower threaded sleeve (10) is provided in the second groove (9). The upper bolt (4) and the lower threaded sleeve (10) are threadedly connected.