A three-track synchronous track-lifting control system for railway turnout tamping vehicle

Abstract

Compared with the prior art, the three-track synchronous track-lifting control system for a railway turnout tamping vehicle disclosed in the present application includes: a main track-lifting hydraulic system and an auxiliary track-lifting hydraulic system; the main track-lifting hydraulic system is used to control the up and down movement of the main track-lifting device; the auxiliary track-lifting hydraulic system is used to control the up and down movement of the auxiliary track-lifting device; a main track-lifting control circuit is connected to the main track-lifting hydraulic system through an electrical signal; an auxiliary track-lifting control circuit is connected to the auxiliary track-lifting hydraulic system through an electrical signal; a level detection sensor is used to measure in real time the level difference between the straight section of the turnout where the main track-lifting device is located and the curved section of the turnout where the auxiliary track-lifting device is located. Compared with the prior art, the three-track synchronous track-lifting control system for a railway turnout tamping vehicle provided in the present application can solve the problem that the track-lifting amount of the third section of the turnout tamping vehicle is difficult to keep level with the main track-lifting device and requires manual auxiliary track-lifting, reduce the workload of manual work, and significantly improve the quality of track-lifting operations in the turnout area.

Description

Technical Field

[0001] The present application relates to the technical field of track construction, and more specifically, to a three-track synchronous track-lifting control system for a railway turnout tamping vehicle. Background Art

[0002] The railway turnout tamping vehicle is a large-scale special maintenance equipment used for lifting, shifting, leveling and tamping railway turnouts. The railway turnout tamping vehicle includes a vehicle body, a main track-lifting device, a main track-lifting cylinder, an auxiliary track-lifting device, an auxiliary track-lifting cylinder, an auxiliary track-lifting arm, etc.

[0003] An important function of a railway turnout tamping vehicle is to synchronously raise the two straight tracks where the vehicle is located and the curved track on the side when operating in the turnout area. At present, the existing technology can realize three-track raising through the main track raising device and the extended auxiliary track raising device, but the technology has not yet achieved true synchronization, and manual auxiliary track raising and observation are required.

[0004] Therefore, how to provide a three-track synchronous track lifting control system for a railway turnout tamping vehicle, which can solve the problem that the third track lifting amount of the turnout tamping vehicle is difficult to keep level with the main track lifting and requires manual assistance, reduce the workload of manual work, and improve the quality of track lifting operations in the turnout area, has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a three-track synchronous track lifting control system for a railway turnout tamping vehicle, which can solve the problem that the third track lifting amount of the turnout tamping vehicle is difficult to keep level with the main track lifting and requires manual assistance, thereby reducing the workload of manual operations and improving the quality of track lifting operations in the turnout area.

[0006] The technical solutions provided by this application are as follows:

[0007] The present application provides a three-track synchronous track-lifting control system for a railway turnout tamping vehicle, comprising: a main track-lifting hydraulic system and an auxiliary track-lifting hydraulic system; the main track-lifting hydraulic system is used to control the up and down movement of the main track-lifting device; the auxiliary track-lifting hydraulic system is used to control the up and down movement of the auxiliary track-lifting device;

[0008] A main track lifting control circuit connected to the main track lifting hydraulic system via an electrical signal;

[0009] An auxiliary track-lifting control circuit connected to the auxiliary track-lifting hydraulic system via an electrical signal;

[0010] The level detection sensor is used to measure in real time the level difference between the straight section of the turnout where the main track lifting device is located and the curved section of the turnout where the auxiliary track lifting device is located.

[0011] Furthermore, in a preferred embodiment of the present invention, the main lifting hydraulic system includes: a main lifting servo valve connected to the main lifting control circuit via a signal; a main lifting cylinder connected to the main lifting servo valve via an oil circuit; a main lifting oil tank connected to the main lifting servo valve via an oil circuit; and a main lifting pump arranged on the oil circuit connecting the main lifting oil tank and the main lifting servo valve.

[0012] Furthermore, in a preferred embodiment of the present invention, the auxiliary lifting hydraulic system includes: an auxiliary lifting servo valve connected to the auxiliary lifting control circuit via a signal; an auxiliary lifting cylinder connected to the auxiliary lifting servo valve via an oil circuit; an auxiliary lifting oil tank connected to the auxiliary lifting servo valve via an oil circuit; and an auxiliary lifting pump provided on the oil circuit connecting the auxiliary lifting oil tank and the auxiliary lifting servo valve.

[0013] Furthermore, in a preferred embodiment of the present invention, the level detection sensor is specifically connected to the auxiliary track starting control circuit.

[0014] Furthermore, in a preferred embodiment of the present invention, the level detection sensor is an infrared CCD image sensor.

[0015] Furthermore, in a preferred embodiment of the present invention, the three-rail synchronous track-lifting control system of the railway turnout tamping vehicle also includes: a main track-lifting safety valve connected to the main track-lifting cylinder; and an auxiliary track-lifting safety valve connected to the auxiliary track-lifting cylinder.

[0016] Furthermore, in a preferred embodiment of the present invention, the three-rail synchronous track-lifting control system of the railway turnout tamping vehicle also includes: a main track-lifting throttle valve connected to the main track-lifting cylinder and the main track-lifting servo valve; and an auxiliary track-lifting throttle valve connected to the auxiliary track-lifting cylinder and the auxiliary track-lifting servo valve.

[0017] Furthermore, in a preferred embodiment of the present invention, oil filters are provided at the oil pump inlet ends of the main starter oil pump and the auxiliary starter oil pump.

[0018] Furthermore, in a preferred embodiment of the present invention, the three-rail synchronous track-lifting control system of the railway turnout tamping vehicle further includes: a main track-lifting oil pressure sensor provided on the oil circuit between the main track-lifting servo valve and the main track-lifting oil cylinder.

[0019] Furthermore, in a preferred embodiment of the present invention, the railway turnout tamping vehicle three-rail synchronous track lifting control system further includes: an auxiliary track lifting oil pressure sensor provided on the oil circuit between the auxiliary track lifting servo valve and the auxiliary track lifting cylinder.

[0020] Furthermore, in a preferred embodiment of the present invention, the three-track synchronous track-lifting control system of the railway turnout tamping vehicle also includes: a main track-lifting alarm indicator connected to the main track-lifting oil pressure sensor and the main track-lifting control circuit; and an auxiliary track-lifting alarm indicator connected to the auxiliary track-lifting oil pressure sensor and the auxiliary track-lifting control circuit.

[0021] The invention provides a three-track synchronous track-lifting control system for a railway turnout tamping vehicle. Compared with the prior art, the invention comprises: a main track-lifting hydraulic system and an auxiliary track-lifting hydraulic system, wherein the main track-lifting hydraulic system is used to control the up and down movement of the main track-lifting device, and the auxiliary track-lifting hydraulic system is used to control the up and down movement of the auxiliary track-lifting device, and in addition, the main track-lifting control circuit is connected to the main track-lifting hydraulic system through an electrical signal, and the auxiliary track-lifting control circuit is connected to the auxiliary track-lifting hydraulic system through an electrical signal; and a level detection sensor is included, which is used to measure in real time the level difference between the straight strand where the main track-lifting device is located and the curved strand where the auxiliary track-lifting device is located. In this way, the level error signal between the straight strand and the curved strand detected by the level measurement sensor enters the auxiliary track-lifting control circuit, controls the current of the auxiliary track-lifting servo valve, and then controls the auxiliary track-lifting oil cylinder to lift the track, until the level error signal between the straight strand and the curved strand is zero, the current of the auxiliary track-lifting servo valve is zero, and the auxiliary track-lifting oil cylinder stops lifting the track. Thereby, it is ensured that the auxiliary track-lifting cylinder has a sufficiently large lifting force, and that the curved strand of the auxiliary track-lifting is lifted synchronously with the straight strand of the main track-lifting, thereby eliminating the horizontal error between the two. Compared with the existing technology, it can solve the problem that the lifting amount of the third strand of the turnout tamping vehicle is difficult to keep level with the main track-lifting and requires manual auxiliary track-lifting, thereby reducing the workload of manual work and significantly improving the quality of track-lifting operations in the turnout area. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of a three-track synchronous track-starting control system for a railway turnout tamping vehicle provided by an embodiment of the present invention;

[0024] Figure 2 The present invention is a schematic diagram of a three-track synchronous track-lifting control system of a railway turnout tamping vehicle involved in the prior art. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0026] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0030] Please Figure 1 to Figure 2As shown, the three-track synchronous track-lifting control system of the railway turnout tamping vehicle provided in the embodiment of the present application includes: a main track-lifting hydraulic system and an auxiliary track-lifting hydraulic system; the main track-lifting hydraulic system is used to control the up and down movement of the main track-lifting device; the auxiliary track-lifting hydraulic system is used to control the up and down movement of the auxiliary track-lifting device; a main track-lifting control circuit 1 is connected to the main track-lifting hydraulic system through an electrical signal; an auxiliary track-lifting control circuit 4 is connected to the auxiliary track-lifting hydraulic system through an electrical signal; and a level detection sensor 7 is used to measure the level difference between the main track-lifting device and the auxiliary track-lifting device in real time.

[0031] The embodiment of the present invention provides a three-track synchronous track-lifting control system for a railway turnout tamping vehicle, specifically comprising: a main track-lifting hydraulic system and an auxiliary track-lifting hydraulic system, wherein the main track-lifting hydraulic system is used to control the main track-lifting device to move up and down, and the auxiliary track-lifting hydraulic system is used to control the auxiliary track-lifting device to move up and down, in addition, the main track-lifting control circuit 1 is connected to the main track-lifting hydraulic system through an electrical signal, and the auxiliary track-lifting control circuit 4 is connected to the auxiliary track-lifting hydraulic system through an electrical signal; and a level detection sensor 7 is included, which is used to measure in real time the level difference between the straight strand of the turnout where the main track-lifting device is located and the curved strand of the turnout between the auxiliary track-lifting device. In this way, the horizontal error signal between the straight strand and the curved strand detected by the level measurement sensor enters the auxiliary track-lifting control circuit 4, controls the current of the auxiliary track-lifting servo valve 5, and then controls the auxiliary track-lifting oil cylinder 6 to lift the track until the horizontal error signal between the curved strand and the straight strand is zero, the current of the auxiliary track-lifting servo valve 5 is zero, and the auxiliary track-lifting oil cylinder 6 stops lifting the track. Thereby, it is ensured that the auxiliary track lifting cylinder 6 has a sufficiently large lifting force, and it can ensure that the curved strand of the auxiliary track lifting is lifted synchronously with the straight strand of the main track lifting, eliminating the horizontal error between the straight strand and the curved strand. Compared with the existing technology, it can solve the problem that the lifting amount of the third strand of the turnout tamping vehicle is difficult to keep level with the main track lifting and requires manual auxiliary track lifting, thereby reducing the workload of manual work and significantly improving the quality of track lifting operations in the switch area.

[0032] Specifically, in an embodiment of the present invention, the main lifting hydraulic system includes: a main lifting servo valve 2 connected to the main lifting control circuit 1 through a signal; a main lifting cylinder 3 connected to the main lifting servo valve 2 through an oil circuit; a main lifting oil tank connected to the main lifting servo valve 2 through an oil circuit; and a main lifting pump arranged on the oil circuit connecting the main lifting oil tank and the main lifting servo valve 2.

[0033] Specifically, in an embodiment of the present invention, the auxiliary lifting hydraulic system includes: an auxiliary lifting servo valve 5 connected to the auxiliary lifting control circuit 4 through a signal; an auxiliary lifting cylinder 6 connected to the auxiliary lifting servo valve 5 through an oil circuit; an auxiliary lifting oil tank connected to the auxiliary lifting servo valve 5 through an oil circuit; and an auxiliary lifting pump arranged on the oil circuit connecting the auxiliary lifting oil tank and the auxiliary lifting servo valve 5.

[0034] Specifically, in the embodiment of the present invention, the level detection sensor 7 is specifically connected to the auxiliary track starting control circuit 4 .

[0035] Specifically, in the embodiment of the present invention, the level detection sensor 7 is an infrared CCD image sensor.

[0036] Specifically, in an embodiment of the present invention, the three-rail synchronous track lifting control system of the railway turnout tamping vehicle further includes: a main track lifting safety valve connected to the main track lifting cylinder 3; and an auxiliary track lifting safety valve connected to the auxiliary track lifting cylinder 6.

[0037] Specifically, in an embodiment of the present invention, the three-rail synchronous track-lifting control system of the railway turnout tamping vehicle also includes: a main track-lifting throttle valve connected to the main track-lifting cylinder 3 and the main track-lifting servo valve 2; and an auxiliary track-lifting throttle valve connected to the auxiliary track-lifting cylinder 6 and the auxiliary track-lifting servo valve 5.

[0038] Specifically, in the embodiment of the present invention, oil filters are provided at the oil pump inlet ends of the main starter oil pump and the auxiliary starter oil pump.

[0039] Specifically, in an embodiment of the present invention, the three-rail synchronous track-lifting control system of the railway turnout tamping vehicle further includes: a main track-lifting oil pressure sensor provided on the oil circuit between the main track-lifting servo valve 2 and the main track-lifting oil cylinder 3 .

[0040] Specifically, in the embodiment of the present invention, the three-rail synchronous track-lifting control system of the railway turnout tamping vehicle further includes: an auxiliary track-lifting oil pressure sensor provided on the oil circuit between the auxiliary track-lifting servo valve 5 and the auxiliary track-lifting oil cylinder 6 .

[0041] Specifically, in an embodiment of the present invention, the three-track synchronous track-lifting control system of the railway turnout tamping vehicle also includes: a main track-lifting alarm indicator connected to the main track-lifting oil pressure sensor and the main track-lifting control circuit 1; and an auxiliary track-lifting alarm indicator connected to the auxiliary track-lifting oil pressure sensor and the auxiliary track-lifting control circuit 4.

[0042] To be more specific, at present, the track-lifting servo valve controls the main track-lifting cylinder and the auxiliary track-lifting cylinder at the same time. The track-lifting force of the auxiliary track-lifting device is applied by the extended auxiliary track-lifting arm, and the auxiliary track-lifting cylinder that generates the auxiliary track-lifting arm is on the car body. Due to the principle of leverage, the track-lifting amount of the auxiliary track-lifting device is actually much smaller than the track-lifting amount of the main track-lifting device, and the track-lifting control circuit detects the track-lifting amount of the main track-lifting device. As long as the track-lifting amount of the main track-lifting device reaches the target value, the current output by the track-lifting control circuit to the track-lifting servo valve becomes 0, and the track-lifting servo valve stops supplying oil to the main track-lifting cylinder and the auxiliary track-lifting cylinder, and the track-lifting stops. Therefore, the track-lifting amount of the third rail (curved track) often fails to meet the requirements and manual assistance is required for track-lifting.

[0043] In addition, the track-lifting control circuit only accurately controls the track-lifting amount of the main track-lifting device. There is no sensor to detect whether the third rail (curved track) is level with the straight track where the switch tamping vehicle is located after the track-lifting operation is completed. It is uncontrolled and can only be achieved through manual assisted track-lifting and observation.

[0044] In order to ensure the quality of the operation of the tamping vehicle in the turnout area and reduce the workload of manual auxiliary track lifting, an embodiment of the present invention provides a control system for the synchronous track lifting of three tracks of a turnout tamping vehicle, which involves an auxiliary track lifting cylinder and a main track lifting cylinder, and the oil circuits of the two are separated; an auxiliary track lifting servo valve that controls the auxiliary track lifting cylinder; an auxiliary track lifting control circuit; and a measuring sensor installed on the auxiliary track lifting device to measure the horizontal error between the curved section where the auxiliary track lifting device is located and the straight section where the main track lifting device is located.

[0045] In an embodiment of the present invention, two sets of closed-loop track lifting control circuits are used to control the main track lifting cylinder and the auxiliary track lifting cylinder respectively. The main track lifting control circuit remains unchanged, and an auxiliary track lifting control circuit and an auxiliary track lifting servo valve are added to control the auxiliary track lifting cylinder; a level detection sensor is installed on the auxiliary track lifting device to measure the level difference between the straight strand and the curved strand in real time.

[0046] When the turnout tamping vehicle is lifting three tracks in the turnout area, the main track lifting cylinder and the auxiliary track lifting cylinder act independently. The given basic track lifting amount and the track lifting error detected by the leveling sensor form a track lifting amount signal that enters the main track lifting control circuit, controls the current of the main track lifting servo valve, and then controls the main track lifting cylinder to lift the rail row to a given position. The horizontal measurement sensor detects the horizontal error signal between the straight strand where the main track lifting device is located and the curved strand where the auxiliary track lifting device is located, enters the auxiliary track lifting control circuit, controls the current of the auxiliary track lifting servo valve, and then controls the auxiliary track lifting cylinder to lift the track until the horizontal error signal between the auxiliary track lifting device and the main track lifting device is zero, the current of the auxiliary track lifting servo valve is zero, and the auxiliary track lifting cylinder stops lifting the track. In other words, the auxiliary track lifting cylinder follows the main track lifting cylinder, and the control and oil circuit are independent, which ensures that the auxiliary track lifting cylinder has a large enough lifting force, and can also ensure that the curved strand of the auxiliary track lifting and the straight strand of the main track lifting are lifted synchronously, eliminating the horizontal error between the two.

[0047] As described above, compared with the prior art, the three-track synchronous track-lifting control system of the railway turnout tamping vehicle involved in the embodiment of the present invention can solve the problem that the track-lifting amount of the third track of the turnout tamping vehicle is difficult to keep level with the main track-lifting amount, and manual assistance is required for track-lifting, thereby reducing the workload of manual operations and significantly improving the quality of track-lifting operations in the turnout area.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A three-track synchronous track-starting control system for a railway turnout tamping vehicle. It is characterized in that include: Main track lifting hydraulic system and auxiliary track lifting hydraulic system; the main track lifting hydraulic system is used to control the main track lifting device to move up and down; the auxiliary track lifting hydraulic system is used to control the auxiliary track lifting device to move up and down; A main track lifting control circuit (1) is connected to the main track lifting hydraulic system via an electrical signal; An auxiliary track-lifting control circuit (4) is connected to the auxiliary track-lifting hydraulic system via an electrical signal; A level detection sensor (7) is used to measure in real time the level difference between the straight section of the turnout where the main track-lifting device is located and the curved section of the turnout where the auxiliary track-lifting device is located; The main lifting hydraulic system comprises: a main lifting servo valve (2) connected to the main lifting control circuit (1) via a signal; a main lifting oil cylinder (3) connected to the main lifting servo valve (2) via an oil circuit; a main lifting oil tank connected to the main lifting servo valve (2) via an oil circuit; and a main lifting pump provided on the oil circuit connecting the main lifting oil tank and the main lifting servo valve (2); The auxiliary lifting hydraulic system comprises: an auxiliary lifting servo valve (5) connected to the auxiliary lifting control circuit (4) via a signal; an auxiliary lifting oil cylinder (6) connected to the auxiliary lifting servo valve (5) via an oil circuit; an auxiliary lifting oil tank connected to the auxiliary lifting servo valve (5) via an oil circuit; and an auxiliary lifting pump provided on the oil circuit connecting the auxiliary lifting oil tank and the auxiliary lifting servo valve (5); The level detection sensor (7) is specifically connected to the auxiliary track control circuit (4); The auxiliary track lifting control circuit (4) is used to receive the horizontal error signal between the straight strand where the main track lifting device is located and the curved strand where the auxiliary track lifting device is located, detected by the horizontal detection sensor (7), and control the current of the auxiliary track lifting servo valve (5) according to the horizontal error signal, thereby controlling the track lifting of the auxiliary track lifting cylinder (6) until the horizontal error signal between the auxiliary track lifting device and the main track lifting device is zero, then controlling the current of the auxiliary track lifting servo valve (5) to be zero, and the track lifting of the auxiliary track lifting cylinder (6) stops.

2. The railway turnout tamping vehicle three-track synchronous track starting control system according to claim 1, It is characterized in that The three-rail synchronous track-lifting control system of the railway turnout tamping vehicle further comprises: a main track-lifting safety valve connected to the main track-lifting oil cylinder (3); and an auxiliary track-lifting safety valve connected to the auxiliary track-lifting oil cylinder (6).

3. The railway turnout tamping vehicle three-track synchronous track lifting control system according to claim 2, It is characterized in that The three-track synchronous track-lifting control system of a railway turnout tamping vehicle further comprises: a main track-lifting throttle valve connected to the main track-lifting oil cylinder (3) and the main track-lifting servo valve (2); and an auxiliary track-lifting throttle valve connected to the auxiliary track-lifting oil cylinder (6) and the auxiliary track-lifting servo valve (5).

4. The railway turnout tamping vehicle three-track synchronous track starting control system according to claim 1, It is characterized in that Oil filters are provided at the oil pump inlet ends of the main track pump and the auxiliary track pump.

5. The three-track synchronous track-starting control system for the railway turnout tamping vehicle according to claim 4, It is characterized in that The three-rail synchronous track-lifting control system of the railway turnout tamping vehicle further comprises: a main track-lifting oil pressure sensor arranged on the oil circuit between the main track-lifting servo valve (2) and the main track-lifting oil cylinder (3).

6. The three-track synchronous track-starting control system for the railway turnout tamping vehicle according to claim 5, It is characterized in that The three-rail synchronous track-lifting control system of the railway turnout tamping vehicle further comprises: an auxiliary track-lifting oil pressure sensor arranged on the oil circuit between the auxiliary track-lifting servo valve (5) and the auxiliary track-lifting oil cylinder (6).

7. The three-track synchronous track-starting control system for the railway turnout tamping vehicle according to claim 6, It is characterized in that The railway turnout tamping vehicle three-track synchronous track-lifting control system further comprises: a main track-lifting alarm indicator connected to the main track-lifting oil pressure sensor and the main track-lifting control circuit (1); and an auxiliary track-lifting alarm indicator connected to the auxiliary track-lifting oil pressure sensor and the auxiliary track-lifting control circuit (4).

8. The three-track synchronous track-starting control system for a railway turnout tamping vehicle according to claim 1, It is characterized in that The level detection sensor (7) is an infrared CCD image sensor.

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