Positive hook device suitable for large buffering stroke

Abstract

The utility model discloses a positive hook device adapting to a large buffer stroke, which comprises a coupler connecting plate, a guide plate and a support plate, one end of the coupler connecting plate is fixed on the side of a tractor coupler, the other end of the coupler connecting plate is connected with the support plate, and the guide plate is fixed on one side of the support plate; the guide plate is a bent plate, and the position of the guide plate is corrected through guiding of the bent plate in the process that the locomotive coupler is close to the tractor coupler. Compared with the prior art, the positive hook device is welded at the position of the tractor coupler, and when the tractor coupler needs to work in a large buffer stroke, the positive hook device can move back and forth along with the tractor coupler, so that the accident potential of collision with a locomotive wagon is avoided. The coupler correcting device is scientific and reasonable in design structure, the locomotive coupler can be restored to the correct position to be connected with the tractor coupler, and the requirement for the large buffering stroke of the tractor coupler can be met.

Description

Technical Field

[0001] The utility model belongs to bulk material loading and unloading equipment for railway vehicles, in particular to a positive hook device which is adaptable to a large buffer stroke. Background Art

[0002] A coupler is a vehicle component used to connect one vehicle to another, or one vehicle to another, transmitting traction and impact forces while maintaining a certain distance between vehicles. In a dumper system, after a vehicle is flipped over by the dumper, the coupler is affected by gravity and does not return to the horizontal position with the vehicle. Instead, it is tilted at an angle to the center of the vehicle, preventing the tractor's coupler from connecting with the vehicle's coupler, severely impacting the dumper's efficiency.

[0003] At present, there are generally several ways to solve the above problems: manual reset, coupler eccentricity treatment, and hook correction device.

[0004] Manual resetting is easy to understand. After the tipper is flipped, the vehicle coupler and the tractor coupler are not aligned on the same centerline and cannot be connected. Therefore, the staff needs to manually reconnect the vehicle coupler on site and then reconnect it to the tractor coupler. However, this method has obvious disadvantages. It wastes manpower and increases the working cycle of the tipper, seriously affecting the working efficiency of the tipper. It also increases safety risks and working costs.

[0005] To address coupler eccentricity, the tractor's coupler is designed to account for the vehicle's coupler eccentricity after the tipping vehicle is flipped. To accommodate this eccentricity, the tractor's coupler center position is aligned with the vehicle's coupler eccentricity, ensuring smooth connection between the two couplers. However, this approach has drawbacks. First, due to complex field conditions, the couplers may not always reach the predetermined eccentricity after each vehicle flip and reset. When the actual eccentricity is less than the predetermined distance, the couplers can still connect. However, when the actual eccentricity exceeds the predetermined distance, the couplers may not connect. In these cases, manual repositioning is still necessary to adjust the coupler position. Second, because the tractor's coupler and the flipped vehicle are not aligned on the same centerline, the traction force applied to the towing vehicle is at an angle to its own centerline during travel, generating tangential stresses that affect the vehicle's motion. Furthermore, the tractor's coupler is also affected by the tangential stresses generated by the vehicle, causing some deflection and wear at the coupler's rear end. In actual work, there is indeed a lot of wear and tear on the tail of the tractor coupler.

[0006] A straightening hook mechanism is a common solution for overcoming locomotive coupler eccentricity. However, conventional straightening hook mechanisms are welded to the tractor boom mechanism and are used to straighten the locomotive coupler after the tipper has flipped. This tractor coupler mechanism has a short stroke. When the coupler is connected to the locomotive coupler, the short buffer stroke can easily damage both the tractor and the locomotive. This damage has already occurred at this site, and this situation is common at other work sites. To address this issue, we increased the coupler buffer stroke and lengthened the boom mechanism coupler sleeve. This provides sufficient buffer stroke to absorb the impact force during a collision between the tractor and the locomotive, extending the service life of the tractor coupler. However, there is also a problem: the previous straightening hook mechanism is no longer suitable for the required long buffer stroke. Since the straightening hook mechanism is fixed to the boom mechanism and remains in place during the coupler retraction, it can collide with the locomotive body.

[0007] Currently, the railway authorities are looking to increase rail transport capacity and integrate rail freight resources, thereby comprehensively improving production efficiency and shortening work cycles. However, none of the above methods currently meet these requirements.

[0008] In summary, it is very necessary to research and develop a new type of positive hook device that can adapt to a large buffer stroke. Summary of the Invention

[0009] The utility model aims to improve the shortcomings and deficiencies in the above-mentioned technologies and provide a set of positive hook devices that are suitable for a large buffer stroke. The positive hook device not only has a scientific and reasonable design structure, can restore the locomotive coupler to the correct position to connect with the tractor coupler, but also can meet the requirements of the tractor coupler with a large buffer stroke, and has the advantages of compact structure, low cost, safety and reliability, easy use and simple maintenance.

[0010] The purpose of the utility model is achieved by adopting the following technical solution: a hooking device adapted to a large buffer stroke, comprising a coupler connecting plate (1), a guide plate (2) and a support plate (3), one end of the coupler connecting plate (1) is fixed to the side of the tractor coupler (4), the other end of the coupler connecting plate (1) is connected to the support plate (3), and one side of the support plate (3) is fixed to the guide plate (2); the guide plate (2) is a curved plate, and when the locomotive coupler (5) approaches the tractor coupler (4), it is guided by the curved plate and aligned, and the curvature of the curved plate is determined according to the size of the actual locomotive coupler.

[0011] Furthermore, the coupler connecting plate (1) and the support plate (3) are vertically connected.

[0012] Furthermore, the coupler connecting plate (1), the guide plate (2), and the support plate (3) are welded together and then welded to the tractor coupler (4).

[0013] Compared with existing technologies, the present invention offers the following advantages: The positive hook device is welded to the tractor coupler. Therefore, when the tractor coupler requires a large buffer stroke, the positive hook device can move forward and backward with the tractor coupler, thereby avoiding the potential accident of collision with the locomotive car body. This positive hook device not only has a scientific and rational design structure, but also can restore the locomotive coupler to the correct position for connection with the tractor coupler, while also meeting the tractor coupler's requirement for a large buffer stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial view of a specific embodiment of the utility model;

[0015] In the figure: 1. Coupler connecting plate; 2. Guide plate; 3. Support plate; 4. Traction vehicle coupler; 5. Locomotive coupler. DETAILED DESCRIPTION

[0016] like Figure 1 As shown, a hooking device adapted to a large buffer stroke includes a coupler connecting plate 1, a guide plate 2 and a support plate 3. One end of the coupler connecting plate 1 is fixed to the side of the tractor coupler 4, and the other end of the coupler connecting plate 1 is connected to the support plate 3. One side of the support plate 3 is fixed with the guide plate 2; the guide plate 2 is a curved plate, and when the locomotive coupler 5 approaches the tractor coupler 4, it is guided by the curved plate and aligned. The curvature of the curved plate is determined according to the size of the actual locomotive coupler.

[0017] Furthermore, the coupler connecting plate 1 and the support plate 3 are vertically connected.

[0018] Furthermore, the coupler connecting plate 1 is welded to the guide plate 2 and the support plate 3 and then welded to the tractor coupler 4 .

[0019] Together, the aforementioned components form a straight hook device capable of adapting to extended buffer travel. This device not only accommodates situations where, after the locomotive flips and unloads, the locomotive coupler is no longer in the locomotive's center due to gravity, preventing the traction vehicle coupler from connecting with the locomotive coupler, but also overcomes the drawback of previous straight hook devices, which were too short to accommodate the extended buffer travel of the traction vehicle coupler. The straight hook device restores the flipped locomotive coupler to its correct position and connects it to the traction vehicle. When the traction vehicle coupler requires an extended buffer travel, the straight hook device moves with it, avoiding collision with the locomotive body and addressing the need for a straight hook when the traction vehicle coupler requires an extended buffer travel.

[0020] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. All technicians familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention based on the technical solution and concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A positive hook device adapted to a large buffer stroke, characterized in that: The invention comprises a coupler connecting plate (1), a guide plate (2) and a support plate (3), wherein one end of the coupler connecting plate (1) is fixed to the side of the tractor coupler (4), the other end of the coupler connecting plate (1) is connected to the support plate (3), and one side of the support plate (3) is fixed to the guide plate (2); the guide plate (2) is a bent plate, and when the locomotive coupler (5) approaches the tractor coupler (4), the guide plate is guided by the bent plate to be aligned.

2. The positive hook device adapted to a large buffer stroke according to claim 1, characterized in that: The coupler connecting plate (1) and the supporting plate (3) are vertically connected.

3. The positive hook device adapted to a large buffer stroke according to claim 1, characterized in that: The coupler connecting plate (1), the guide plate (2), and the support plate (3) are welded together and then welded to the tractor coupler (4).

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