Constant-pressure self-locking device for locomotive guide assembly

Abstract

The utility model relates to the technical field of tractors, in particular to a constant-pressure self-locking device for a locomotive guide component, which comprises an oil cylinder, a balance valve and a multi-way valve. More than two oil cylinders are arranged on the guide assembly; each oil cylinder is provided with a balance valve, and each balance valve is connected with an oil port of the corresponding oil cylinder. And the balance valve is connected with the multi-way valve. Due to the arrangement of the balance valve and the multi-way valve, simultaneous operation of the two oil cylinders can be guaranteed, average distribution of traction torque is guaranteed, and the stability of the tractor is improved. The oil cylinder is locked through the balance valve, and then the self-locking function of the guide assembly is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, and more specifically to a constant pressure self-locking device for locomotive guide components. Background Technology

[0002] With the rapid development of railway transportation, locomotive safety has become increasingly important. During locomotive operation, various factors can affect its stability. The locomotive guiding assembly is a key component ensuring locomotive stability; its main function is to guide the locomotive and maintain its stable movement on the track. It typically includes guide wheels and hydraulic cylinders for adjusting the height of the guide wheels. However, if the two hydraulic cylinders used to adjust the guide wheel height are driven independently, their asynchronous operation can easily lead to uneven force on the guide wheels on both sides, affecting the locomotive's stability. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a constant pressure self-locking device for locomotive guide components, which can ensure the balanced distribution of traction torque.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A constant-pressure self-locking device for a locomotive guiding assembly includes hydraulic cylinders, a balance valve, and a multi-way valve. Two or more hydraulic cylinders are installed on the guiding assembly. Each hydraulic cylinder is equipped with a balance valve, and each balance valve is connected to the oil port of its corresponding hydraulic cylinder. The balance valve is connected to the multi-way valve. The balance valve and multi-way valve enable the two hydraulic cylinders to operate synchronously, ensuring a balanced distribution of traction torque and constant pressure, which is beneficial to the stability of the tractor. Furthermore, the balance valve can be used to lock the hydraulic cylinders, thereby achieving self-locking of the guiding assembly.

[0006] Furthermore, the guiding component includes:

[0007] A connecting shaft is provided, with a guide wheel installed at each end of the connecting shaft; a through hole is provided on the connecting shaft in the vertical direction, the through hole including an upper through hole and a lower through hole, the inner diameter of the upper through hole being larger than the inner diameter of the lower through hole;

[0008] The insert rod passes through the through hole, extends to the outside of the connecting shaft at the bottom, and is fixedly connected to the mounting base at the top. The lower end of the insert rod is provided with external threads.

[0009] A spring is sleeved on the outer periphery of the insert rod and placed in the upper through hole, located between the mounting base and the lower through hole, with the top of the spring being higher than the top of the through hole;

[0010] Nut, threaded connection in the plug rod, located below the connecting shaft, for pre-tightening spring, when the guide wheel is suspended, the spring can exert a downward thrust on the connecting shaft, so as to prevent the guide wheel from appearing suspended.

[0011] Further, the mounting seat top is provided with a threaded hole, and the piston rod of the oil cylinder is screwed with the threaded hole.

[0012] Further, the through hole is provided with two, respectively located at the position close to both ends of the connecting shaft.

[0013] Further, the outer diameter of the spring is smaller than the upper through hole inner diameter of the through hole and larger than the lower through hole inner diameter of the through hole, and the lower through hole of the through hole supports the spring.

[0014] Further, the mounting seat adopts a cylinder, and the outer diameter thereof is larger than the outer diameter of the spring.

[0015] Further, the outer diameter of the plug rod is not larger than the lower through hole inner diameter of the through hole, so that it can penetrate through the whole through hole.

[0016] Further, the mounting seat side is provided with a mounting hole for mounting a handle.

[0017] The technical effect of the utility model:

[0018] Compared with the prior art, the constant pressure self-locking device for the locomotive guide assembly of the utility model, the configuration of the balance valve and the multi-way valve can ensure that the two oil cylinders operate simultaneously, ensure the average distribution of the traction torque, the pressure is constant, and the stability of the tractor can be improved; the balance valve is used to lock the oil cylinder, so that the guide assembly realizes the self-locking function. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the constant pressure self-locking device for the locomotive guide assembly of the utility model;

[0020] Figure 2 It is a structure schematic view of the plug rod and the mounting seat of the utility model;

[0021] Figure 3 It is a longitudinal sectional view of the connecting shaft at the through hole of the utility model.

[0022] In the figure, 1, multi-way valve; 2, oil cylinder; 3, balance valve; 4, connecting shaft; 5, guide wheel; 601, upper through hole; 602, lower through hole; 7, plug rod; 8, spring; 9, mounting seat; 10, nut; 11, rotating shaft; 12, threaded hole; 13, mounting hole; 101, oil port A; 102, oil port B; 103, oil port C; 104, oil port D; 301, oil port E; 302, oil port F. CONCRETE IMPLEMENTATION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] Example 1:

[0025] like Figure 1 As shown, this embodiment relates to a constant pressure self-locking device for a locomotive guiding assembly, which includes a multi-way valve 1, two hydraulic cylinders 2, and two balance valves 3.

[0026] like Figure 1 As shown, both hydraulic cylinders 2 are mounted on the guide assembly. The two balance valves 3 are respectively mounted on the two hydraulic cylinders 2 and are both connected to the multi-way valve 1. Specifically, the multi-way valve 1 includes ports A101, B102, C103, and D104, and the balance valves 3 include ports E301 and F302. Ports E301 on the two balance valves 3 are connected to ports A101 and B102 on the multi-way valve 1, respectively, and ports F302 on the two balance valves 3 are connected to ports C103 and D104 on the multi-way valve 1, respectively. Through the balance valves 3 and the multi-way valve 1, the synchronization of the two hydraulic cylinders 2 is ensured, and the balance valves 3 can also lock the hydraulic cylinders 2.

[0027] The guide assembly includes a connecting shaft 4, a plug rod 7, a spring 8, a mounting base 9, and a nut 10.

[0028] like Figures 1-3 As shown, a guide wheel 5 is mounted on each end of the connecting shaft 4 via a rotating shaft 11. Two through holes are provided on the connecting shaft 4 in the vertical direction, located near both ends of the connecting shaft 4. Specifically, as... Figure 3 As shown, the through hole includes an upper through hole 601 and a lower through hole 602, and the inner diameter of the upper through hole 601 is larger than the inner diameter of the lower through hole 602.

[0029] The insertion rod 7 passes through the through hole and has an external thread at its lower end. The top of the insertion rod 7 is fixedly connected to the mounting base 9, and the bottom extends to the outside of the connecting shaft 4 and is fitted with a nut 10 for pre-tightening the spring 8. Preferably, the insertion rod 7 fits snugly against the inner wall of the lower through hole 602 to improve the stability of the insertion rod 7.

[0030] The spring 8 is sleeved on the outer periphery of the insert rod 7 and placed in the upper through hole 601. The outer diameter of the spring 8 is smaller than the inner diameter of the upper through hole 601 and larger than the inner diameter of the lower through hole 602. The mounting base 9 is a cylinder with an outer diameter larger than the outer diameter of the spring 8, so that the spring 8 is installed between the lower through hole 602 and the mounting base 9. The top height of the spring 8 is higher than the top height of the through hole.

[0031] The mounting seat 9 is provided with a threaded hole 12 at the top, and the piston rod of the oil cylinder 2 is screwed into the threaded hole 12, so that the oil cylinder 2 is mounted on the guiding assembly.

[0032] Working principle: in use, the cylinder body of the oil cylinder 2 is connected to the tractor through the ear plate, and the piston rod of the oil cylinder 2 is screwed onto the connecting shaft 4 of the guiding assembly. Under the action of the balance valve 3 and the multi-way valve 1, the two oil cylinders 2 can act synchronously, ensure the force balance of the two guide wheels, make the traction torque be evenly distributed, and can keep constant pressure, improve the stability of the tractor. The balance valve 3 can also lock the oil cylinder 2, realize the self-locking function of the guiding assembly, and does not need to additionally configure a self-locking device. On the other hand, the guiding assembly is screwed with the nut 10 to give the spring 8 a pre-tightening force, and the spring 8 is contracted. When the guide wheel 5 is suspended, the spring 7 will give the connecting shaft 4 a downward thrust, so that the guide wheel can always be on the track plate, avoiding the phenomenon that the guide wheel 5 is suspended, thereby effectively avoiding the derailment of the locomotive, and enabling the locomotive to stably travel.

[0033] The above specific embodiments are only specific cases of the utility model, and the patent protection scope of the utility model includes but is not limited to the above specific embodiments. Any appropriate changes or modifications made by any ordinary skilled person in the technical field to the utility model claims shall fall within the patent protection scope of the utility model.

Claims

1. A constant pressure self-locking device for a locomotive guide assembly, comprising: It comprises an oil cylinder (2), a balance valve (3) and a multi-way valve (1); the oil cylinder (2) is provided with two or more than two and is installed on a guide assembly; one balance valve (3) is installed on each oil cylinder (2), and each balance valve (3) is connected with the oil port of the corresponding oil cylinder (2); the balance valve (3) is connected with the multi-way valve (1).

2. The constant pressure self-locking device for a locomotive guide assembly of claim 1, wherein, The guide assembly comprises: A connecting shaft (4) is provided with a guide wheel (5) at each end; a through hole is formed in the connecting shaft (4) in the vertical direction, and the through hole comprises an upper through hole (601) and a lower through hole (602); the inner diameter of the upper through hole (601) is larger than that of the lower through hole (602); A plug rod (7) penetrates the through hole, extends to the outside of the connecting shaft (4) at the bottom, and is fixedly connected with a mounting seat (9) at the top; the lower end of the plug rod (7) is provided with external threads; A spring (8) is sleeved on the outer periphery of the plug rod (7) and is arranged in the upper through hole (601) between the mounting seat (9) and the lower through hole (602); the top of the spring (8) is higher than the top of the through hole; A nut (10) is threadedly connected on the plug rod (7) below the connecting shaft (4) and is used for pre-tightening the spring (8).

3. The constant pressure self-locking device for a locomotive guide assembly of claim 2, wherein, A threaded hole (12) is formed in the top of the mounting seat (9), and the piston rod of the oil cylinder (2) is threadedly connected with the threaded hole (12).

4. The constant pressure self-locking device for a locomotive guide assembly of claim 2, wherein, The through hole is provided with two, which are respectively located at the positions close to the two ends of the connecting shaft (4).

5. The constant pressure self-locking device for a locomotive guide assembly of claim 2, wherein, The outer diameter of the spring (8) is smaller than the inner diameter of the upper through hole (601) of the through hole and larger than the inner diameter of the lower through hole (602) of the through hole.

6. The constant pressure self-locking device for a locomotive guide assembly of claim 2, wherein, The mounting seat (9) is a cylinder, and the outer diameter thereof is larger than the outer diameter of the spring (8).

7. The constant pressure self-locking device for a locomotive guide assembly of claim 2, wherein, The outer diameter of the plug rod (7) is not larger than the inner diameter of the lower through hole (602) of the through hole.

8. The constant pressure self-locking device for a locomotive guide assembly of any one of claims 2-7, wherein, The mounting seat (9) is provided with a mounting hole (13) on the side surface.

Images