Rail changing operation vehicle and operation method suitable for subway steel rail changing

Abstract

The invention provides a rail changing operation vehicle suitable for subway steel rail changing and an operation method, and belongs to the technical field of railway engineering machinery. Comprising a frame, and a walkway convenient for people to move is arranged on the frame; a rail clamping device, a rail gauge control device, a rail lifting device and a mechanical arm which are used for rail changing operation are arranged below the frame; the rear end of the frame is provided with a guide device for providing guidance during steel rail recovery, and the front end and the rear end of the frame are provided with rescue devices for rescuing steel rail derailing. The device has the metro interval walking capacity and adapts to the working conditions of metro curve radius, large gradient and small limit; the two operation functions of rail changing and rail collecting are integrated, and the operation efficiency is greatly improved; the rescue equipment is arranged, so that the function of emergency rescue is achieved; a unique middle beam structure is adopted, various operation devices can be conveniently installed, and meanwhile safety is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of railway engineering machinery, and in particular relates to a rail changing operation vehicle and an operation method suitable for rail changing of subway rails. Background Art

[0002] Rail replacement is essential in the renewal, overhaul and maintenance of railways. However, rails are heavy and have a large elastic modulus. Rail replacement requires the use of a rail replacement vehicle. The cut-out old rails need to be placed outside the track or in the center of the track, and the new rails need to be placed in the rail groove with a controlled gauge. This places higher demands on the efficiency and safety of the rail replacement vehicle. In existing rail replacement vehicles, wire rope hoisting clamps are generally used to cut in and out the rails. The inner and outer sleeve structures driven by the built-in hydraulic cylinders are used to adjust the clamp position to support and clamp the rails. The existing rail-changing vehicles have the following defects: 1. The position control accuracy of the rails is not high, and there is a risk of falling off the track. It is not suitable for construction environments with small limits such as subways and tunnels; 2. The time between rail-changing and rail-collecting construction is relatively close, and using two vehicles to complete them separately will reduce the operation efficiency; 3. Since the rail-changing vehicle runs on a track without fasteners during operation, there is a high risk of falling off the track, and rescue is difficult after falling off the track in environments such as subway tunnels; 4. The existing rail-changing construction operations require a large number of supporting personnel, the degree of mechanization is not high, the efficiency is not high, and there are safety risks; 5. The traditional flat car body is not convenient for installing operating equipment, and it is not convenient for people to escape in an emergency. Therefore, it is necessary to propose improvements. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a rail changing operation vehicle and an operation method suitable for rail changing of subway rails. The present invention aims to solve the problems existing in the existing rail changing operation, integrates the rail changing and rail collecting functions, and greatly improves the operation efficiency; it has the function of responding to emergency rescue, is convenient for installing various operation devices, and improves safety at the same time.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A rail-changing vehicle suitable for rail-changing in subways comprises a vehicle frame, wherein a driver's cab for controlling the entire vehicle is arranged at the front of the upper portion of the vehicle frame, bogies for vehicle movement are arranged at both ends below the vehicle frame, and a walkway for personnel movement is arranged on the frame; a rail clamp, a track gauge control device, a rail lifter and a mechanical arm for rail-changing operations are arranged below the frame; a guide device for providing guidance when recovering the rails is arranged at the rear end of the vehicle frame, and rescue devices for rescuing derailed rails are arranged at both the front and rear ends of the vehicle frame.

[0006] As a further limitation of the above solution, the frame adopts a center beam structure frame with concave sides.

[0007] To further limit the above scheme, the front and rear parts as well as the left and right parts under the frame are all symmetrically provided with rail clamps, track gauge control devices, rail lifters and mechanical arms.

[0008] To further define the above scheme, the track clamp includes a track clamp body, the track clamp body is connected to the frame, a track clamp vertical lifting cylinder is provided at the lower part of the track clamp body, a track clamp vertical guide column is provided on the track clamp vertical lifting cylinder, the lower part of the track clamp vertical guide column is connected to the track clamp transverse telescopic cylinder, the track clamp transverse guide columns are connected on both sides of the track clamp transverse telescopic cylinder, a track clamp rail clamping cylinder is provided at the end of the track clamp transverse guide column, a track clamp rail clamping cylinder is connected to the track clamp rail clamping cylinder, a track clamp clamping device is provided on the track clamp clamping device, a track clamp rail head clamping roller and a track clamp rail bottom tug are provided on the track clamp clamping device.

[0009] To further limit the above scheme, the gauge control device includes a gauge controller body, the gauge controller body is connected to the frame, a gauge controller vertical lifting cylinder is provided at the lower part of the gauge controller body, a gauge controller vertical lifting cylinder is provided on the gauge controller vertical lifting cylinder, a gauge controller vertical guide column is provided on the upper part of the gauge controller vertical guide column, a gauge controller transverse telescopic cylinder is connected to the lower part of the gauge controller vertical guide column, gauge controller transverse guide columns are connected on both sides of the gauge controller transverse telescopic cylinder, a gauge controller rail clamping cylinder is provided at the end of the gauge controller transverse guide column, and a gauge controller clamping device is connected to the gauge controller rail clamping cylinder.

[0010] To further limit the above scheme, the rail lifter includes a rail lifter body, which is connected to the frame, a rail lifter vertical lifting cylinder is provided at the lower part of the rail lifter body, a rail lifter vertical guide column is provided on the rail lifter vertical lifting cylinder, a rail lifter transverse telescopic cylinder is connected to the lower part of the rail lifter vertical guide column, both sides of the rail lifter transverse telescopic cylinder are connected to transverse guide columns of the rail lifter, a rail lifter rail clamping cylinder and a rail lifter clamping device are provided on the transverse guide columns of the rail lifter, and the rail lifter rail clamping cylinder controls the rail lifter clamping device to complete the clamping action.

[0011] As a further limitation of the above scheme, the rescue device adopts a hydraulic system that can lift the track changing vehicle as a whole to facilitate the adjustment of the position of the track changing vehicle.

[0012] As a further limitation of the above solution, the guide device is a guide groove structure provided on the rear end of the frame.

[0013] As a further limitation of the above solution, hooks are provided at both the front and rear ends of the frame.

[0014] The invention relates to an operating method of a rail-changing vehicle for replacing rails in a subway. The rail-changing vehicle has four operating states: running state, rail-changing operation state, rail-collecting operation state, and rescue operation state.

[0015] When the rail-changing vehicle is in the running state, each operating device is retracted, and the rail-changing vehicle travels to the construction site via the bogie;

[0016] When the rail-changing vehicle is in the rail-changing operation state, the rail-changing mechanical arm cooperates with the rail clamp and the gauge control device to adjust the position of the rail. While the vehicle is moving, the old rail in the rail groove is pushed out and the new rail on the side or the center of the track is pushed into the rail groove.

[0017] When the rail-changing vehicle is in the state of rail-collecting operation, the rail-changing vehicle and the rail-storing vehicle are connected, and the mechanical arm transports the old rails removed during the rail-changing construction to the rail-storing vehicle through the guide device to complete the rail-collecting operation;

[0018] When the track changing vehicle is in the rescue working state, the rescue devices at the front and rear of the track changing vehicle will lift the frame to a certain height and restore it to the normal working position.

[0019] The advantages of the present invention compared with the prior art are:

[0020] 1. This solution is a multifunctional rail-changing vehicle for rail-changing and rail-collecting, which integrates two operating functions of rail-changing and rail-collecting, greatly improving the operating efficiency and solving the problem that the rail-changing and rail-collecting construction times are too close in the prior art, and two vehicles are used to complete the work separately, which reduces the operating efficiency;

[0021] 2. In the prior art of this solution, since the track-changing construction vehicle in the subway tunnel runs on a track without fasteners during operation, the risk of falling off the track is very high, and rescue is difficult after falling off the track in an environment such as a subway tunnel. In order to meet the needs of emergency rescue, this vehicle is equipped with a rescue device, which can perform emergency disposal when the vehicle falls off the track to ensure the smooth operation of the vehicle;

[0022] 3. This solution uses a mechanical arm to move and support rails, which has a high degree of mechanization. It is not only compact in structure and suitable for narrow environments such as subways and tunnels, but also saves manpower and greatly improves operating efficiency.

[0023] 4. The frame of this solution adopts a unique middle beam structure, which is convenient for installing various operating devices, and combined with the design of the upper walkway, it improves the safety of personnel;

[0024] 5. The vehicle in this solution has the ability to travel in subway sections and is adaptable to subway curve radius, large slope and small limit conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a main view of a rail-changing vehicle suitable for rail-changing in subways according to the present invention;

[0026] Figure 2 A top view of a rail-changing vehicle suitable for replacing subway rails according to the present invention;

[0027] Figure 3 This is a left view of a rail-changing vehicle suitable for rail-changing in subways according to the present invention;

[0028] Figure 4 This is a right view of a rail-changing vehicle suitable for rail-changing in subways according to the present invention;

[0029] Figure 5 This is a schematic diagram of a rail changing state of a rail changing vehicle suitable for rail changing in a subway according to the present invention;

[0030] Figure 6 This is a schematic diagram of a rail-receiving state of a rail-changing vehicle suitable for rail-changing in subways according to the present invention;

[0031] Figure 7 This is a schematic diagram of a rescue state of a rail-changing operation vehicle suitable for rail-changing in a subway according to the present invention;

[0032] Figure 8 It is a structural schematic diagram of the rail clamp of the present invention;

[0033] Fig. 9 It is a front view of the track gauge control device of the present invention;

[0034] Fig.10 is a top view of the track gauge control device of the present invention;

[0035] Fig.11 It is a front view of the rail lifting device in the present invention;

[0036] Fig.12 It is a top view of the rail lifting device in the present invention;

[0037] Fig.13 It is a schematic diagram of the structure of the mechanical arm in the present invention. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention.

[0040] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0041] See also Figure 1-13 , describe the embodiments of the present invention in detail.

[0042] Example 1: A rail-changing vehicle for subway rail replacement, see Figure 1-4 As shown, it includes a frame 8, which serves as the installation reference of each working device and is used to install the running and braking, loading and storing working devices. The front of the upper part of the frame 8 is provided with a driver's cab 2 for whole vehicle control, which is used to control the running of the whole vehicle and the operation of the working device. Bogies 3 are provided at both ends below the frame 8, and the bogies 3 are used for vehicle running and steering. A walkway 9 is provided on the frame 8 for easy movement of personnel, which is used as a walking space for personnel, and is convenient for the movement of operating personnel on the marshaling when it is connected with other vehicles. A rail clamp 4, a gauge control device 5, a rail lifter 6 and a mechanical arm 7 for rail switching operations are provided below the frame 8; the rail clamp 4 is used to provide guidance and temporary constraints for the rails when the rail switching vehicle is operating; the gauge control device 5 is used to adjust and fix the position of the rails during the rail switching operation; the rail lifter 6 is used to guide the rails and adjust the height of the rails; the mechanical arm 7 is used to clamp the rails and move the rails. A guide device 10 is provided on the rear end of the frame 8, which is used to provide guidance when the rails are recovered during the rail collection operation. The front and rear ends of the vehicle frame 8 are both provided with rescue devices 11 for adjusting the position of the track-changing vehicle to realize rescue in an emergency situation where the track-changing vehicle derails.

[0043] Preferably, the frame 8 adopts a center beam structure frame with concave sides, which is convenient for installing various operating devices and combined with the design of the walkway to improve personnel safety.

[0044] Preferably, the front and rear parts and the left and right parts under the frame 8 are symmetrically provided with rail clamps 4, gauge control devices 5, rail lifters 6 and mechanical arms 7. This structure enables the vehicle to integrate two operating functions of track changing and track collecting, greatly improving the operating efficiency.

[0045] For details, see Figure 8 As shown, the rail clamp 4 includes a rail clamp body 4-1, and the rail clamp body 4-1 is connected to the frame 8. A rail clamp vertical lifting cylinder 4-2 is provided at the lower part of the rail clamp body 4-1, and a rail clamp vertical guide column 4-3 is provided on the rail clamp vertical lifting cylinder 4-2. The lower part of the rail clamp vertical guide column 4-3 is connected to a rail clamp transverse telescopic cylinder 4-5, and the rail clamp transverse guide columns 4-4 are connected on both sides of the rail clamp transverse telescopic cylinder 4-5. The end of the rail clamp transverse guide column 4-4 is provided with a rail clamp rail clamping cylinder 4-6, and the rail clamp rail clamping cylinder 4-6 is connected to a rail clamp clamping device, and the rail clamping device is provided with a rail clamp rail head clamping roller 4-7 and a rail clamp rail bottom tug 4-8.

[0046] When in use, the rail clamp body is fixed to the rail changing vehicle frame, the vertical cylinder of the rail clamp controls the whole to rise or fall along the vertical guide column of the rail clamp, and the lateral telescopic cylinder of the rail clamp controls the lateral guide columns on the left and right sides to extend and retract respectively; the rail clamping cylinder of the rail clamp can open or clamp the clamping mechanism of the rail clamp, thereby realizing clamping control of the rail; the rail head clamping roller and rail bottom tug on the clamping device of the rail clamp control the position and longitudinal movement of the rail.

[0047] For details, see Fig. 9 , 10 As shown, the gauge control device 5 includes a gauge controller body 5-1, and the gauge controller body 5-1 is connected to the frame 8. A gauge controller vertical lifting cylinder 5-2 is provided at the lower part of the gauge controller body 5-1, and a gauge controller vertical guide column 5-3 is provided on the gauge controller vertical lifting cylinder 5-2. The lower part of the gauge controller vertical guide column 5-3 is connected to the gauge controller transverse telescopic cylinder 5-7, and the gauge controller transverse telescopic cylinder 5-7 is connected to gauge controller transverse guide columns 5-5 on both sides. The end of the gauge controller transverse guide column 5-5 is provided with a gauge controller rail clamping cylinder 5-4, and the gauge controller rail clamping cylinder 5-4 is connected to the gauge controller clamping device 5-6.

[0048] When in use, the gauge controller body is fixed to the rail changing vehicle frame, and the gauge controller vertical cylinder controls the entire gauge controller to rise or fall along the vertical guide column of the gauge controller; the gauge controller lateral telescopic cylinder controls the left and right side gauge controller lateral guide columns to telescope to both sides respectively, controlling the gauge within the required range; the gauge controller rail clamping cylinder can open or clamp the gauge controller clamping mechanism, thereby realizing clamping control of the rail.

[0049] For details, see Fig.11 , 12 As shown, the rail lifter 6 includes a rail lifter body 6-1, and the rail lifter body 6-1 is connected to the frame 8. A rail lifter vertical lifting cylinder 6-2 is provided at the lower part of the rail lifter body 6-1, and a rail lifter vertical guide column 6-3 is provided on the rail lifter vertical lifting cylinder 6-2. The lower part of the rail lifter vertical guide column 6-3 is connected to a rail lifter transverse telescopic cylinder 6-6, and both sides of the rail lifter transverse telescopic cylinder 6-6 are connected to rail lifter transverse guide columns 6-5. The rail lifter transverse guide column 6-5 is provided with a rail lifter rail clamping cylinder 6-4 and a rail lifter clamping device 6-7. The rail lifter rail clamping cylinder 6-4 controls the rail lifter clamping device 6-7 to complete the clamping action.

[0050] When in use, the rail lifter body is fixed to the rail changing vehicle frame, and the vertical cylinder of the rail lifter controls the whole to rise or fall along the vertical guide column of the rail lifter to realize the lifting of the rail; the lateral telescopic cylinder of the rail lifter controls the lateral guide columns of the rail lifters on the left and right sides to extend and retract respectively to both sides to realize the lateral movement of the rail; the rail clamping cylinder of the rail lifter can open or clamp the clamping mechanism of the rail lifter, thereby realizing clamping control of the rail.

[0051] Preferably, the rescue device 11 adopts a hydraulic system that can lift the track-changing vehicle as a whole to facilitate the adjustment of the position of the track-changing vehicle, and can perform emergency measures when the vehicle derails, thereby ensuring the smooth progress of the vehicle operation.

[0052] Preferably, the guide device 10 is a guide groove structure provided on the rear end of the frame 8 to facilitate the guiding function when the track is closed.

[0053] Preferably, couplers 1 are provided at both the front and rear ends of the frame 8, and the rail-changing vehicle can be connected to other working vehicles at the front and rear ends through the couplers.

[0054] Embodiment 2: An operating method of a rail-changing vehicle for replacing rails in a subway, wherein the rail-changing vehicle has four operating states: running state, rail-changing operation state, rail-collecting operation state, and rescue work state. The rail-changing vehicle needs to travel to the construction site before operation, and perform rail-changing operations in the rail-changing operation state and rail-collecting operation in the rail-collecting operation state. When an emergency such as derailment occurs, the rail-changing vehicle can escape from danger through the rescue work state.

[0055] Running status:

[0056] 1. When the track-changing vehicle is in the running state, each operating device is folded up, and the track-changing vehicle travels to the construction site via the bogie 3.

[0057] Track changing operation status:

[0058] 1. When the rail-changing operation is in progress, the rail-changing vehicle travels to the construction site. Before the rail-changing operation, the on-site personnel remove the fasteners and saw off the two ends of the old rails;

[0059] 2. When the rail-changing operation is in progress, the rail-changing vehicle travels to the construction site. Before the rail-changing operation is carried out, the new rails need to be unloaded to the center of the track or the side of the track in advance;

[0060] 3. When the rail-changing operation is in progress, the rail-changing vehicle moves to the construction site. Figure 5 As shown, the rail-changing vehicle moves to one end of the old rail, and the mechanical arm pushes the old rail out of the rail groove and pushes the new rail into the rail groove. The rail-changing vehicle moves at a low speed, continuously pushing out the old rail and replacing it with the new rail.

[0061] 4. During the rail changing operation, the rail changing vehicle travels to the construction site and continuously performs rail changing operations. After completing the rail changing operation, the on-site personnel install fasteners and weld both ends of the new rails to complete the rail changing operation.

[0062] Track closing operation status:

[0063] 1. During the rail closing operation, after the rail changing vehicle completes the rail changing operation, it can be connected with the rail storage vehicle and travel to the construction site for rail closing operation;

[0064] 2. During the track closing operation, refer to Figure 6 As shown, the mechanical arm of the rail changing vehicle clamps and lifts the old rail, and guides it into the guide device at the rear of the rail changing vehicle through the rail lifter and the rail clamp. The rail changing vehicle moves and continuously collects the old rail to complete the rail collecting operation.

[0065] Rescue Operation Status:

[0066] 1. In the rescue operation state, when the rail-changing vehicle falls off during construction and is in a narrow space such as a subway or tunnel, the rescue devices at both ends of the rail-changing vehicle lift the vehicle body. Figure 7 As shown, the position of the vehicle body is readjusted to get out of the dangerous posture.

[0067] The vehicle of the present invention has the ability to travel in subway sections and is suitable for subway curve radius, large slope and small limit conditions. At the same time, since the rail replacement operation in the subway tunnel is very easy to fall off the track and rescue is difficult, in order to meet the needs of emergency rescue, the vehicle is equipped with rescue equipment. The unique center beam structure of the vehicle is convenient for installing various operating devices and improves safety. In addition, the vehicle can realize the recycling of old rails after being connected with the rail transport vehicle.

[0068] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0069] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rail-changing vehicle suitable for rail-changing in subways, characterized in that: The invention comprises a vehicle frame (8), wherein a driver's cab (2) for vehicle control is provided at the front of the upper part of the vehicle frame (8), bogies (3) for vehicle movement are provided at both ends below the vehicle frame (8), and a walkway (9) for personnel movement is provided on the upper part of the vehicle frame (8); a rail clamp (4), a track gauge control device (5), a rail lifter (6) and a mechanical arm (7) for rail replacement operations are provided below the vehicle frame (8); a guide device (10) for providing guidance when recovering the rails is provided at the rear end of the vehicle frame (8), a rescue device (11) for rescuing the rails from falling are provided at the front and rear ends of the vehicle frame (8), and a hook (1) is provided at the front and rear ends of the vehicle frame (8).

2. The rail-changing vehicle for subway rail replacement according to claim 1, characterized in that: The vehicle frame (8) adopts a center beam structure frame with concave sides.

3. The rail-changing vehicle for subway rail replacement according to claim 1, characterized in that: The front and rear parts as well as the left and right parts under the vehicle frame (8) are all symmetrically arranged with a rail clamp (4), a track gauge control device (5), a rail lifter (6) and a mechanical arm (7).

4. The rail-changing vehicle for subway rail replacement according to claim 3 is characterized in that: The rail clamp (4) comprises a rail clamp body (4-1), the rail clamp body (4-1) is connected to a vehicle frame (8), a rail clamp vertical lifting cylinder (4-2) is provided at the lower part of the rail clamp body (4-1), a rail clamp vertical guide column (4-3) is provided on the rail clamp vertical lifting cylinder (4-2), a rail clamp horizontal telescopic cylinder (4-5) is connected at the lower part of the rail clamp vertical guide column (4-3), the rail clamp horizontal telescopic cylinder (4-5) is connected to rail clamp horizontal guide columns (4-4) on both sides, a rail clamp steel rail clamping cylinder (4-6) is provided at the end of the rail clamp steel rail clamping cylinder (4-6), a rail clamp clamping device is connected to the rail clamp steel rail clamping cylinder (4-6), and a rail clamp rail head clamping roller (4-7) and a rail clamp rail bottom tug (4-8) are provided on the rail clamp clamping device.

5. The rail-changing vehicle for subway rail replacement according to claim 3 is characterized in that: The track gauge control device (5) comprises a track gauge controller body (5-1), the track gauge controller body (5-1) is connected to a vehicle frame (8), a track gauge controller vertical lifting cylinder (5-2) is provided at the lower part of the track gauge controller body (5-1), a track gauge controller vertical guide column (5-3) is provided on the track gauge controller vertical lifting cylinder (5-2), the lower part of the track gauge controller vertical guide column (5-3) is connected to a track gauge controller transverse telescopic cylinder (5-7), both sides of the track gauge controller transverse telescopic cylinder (5-7) are connected to track gauge controller transverse guide columns (5-5), the end of the track gauge controller transverse guide column (5-5) is provided with a track gauge controller rail clamping cylinder (5-4), and the track gauge controller rail clamping cylinder (5-4) is connected to a track gauge controller clamping device (5-6).

6. The rail-changing vehicle for subway rail replacement according to claim 3, characterized in that: The rail lifter (6) comprises a rail lifter body (6-1), the rail lifter body (6-1) is connected to a vehicle frame (8), a rail lifter vertical lifting cylinder (6-2) is provided at the lower part of the rail lifter body (6-1), a rail lifter vertical guide column (6-3) is provided on the rail lifter vertical lifting cylinder (6-2), a rail lifter horizontal telescopic cylinder (6-6) is connected to the lower part of the rail lifter vertical guide column (6-3), the rail lifter horizontal telescopic cylinder (6-6) is connected to rail lifter horizontal guide columns (6-5) on both sides, a rail lifter rail clamping cylinder (6-4) and a rail lifter clamping device (6-7) are provided on the rail lifter horizontal guide column (6-5), and the rail lifter rail clamping cylinder (6-4) controls the rail lifter clamping device (6-7) to complete the clamping action.

7. The rail-changing vehicle for subway rail replacement according to claim 1, characterized in that: The rescue device (11) adopts a hydraulic system that can raise the track-changing vehicle as a whole to facilitate adjustment of the position of the track-changing vehicle.

8. The rail-changing vehicle for subway rail replacement according to claim 1, characterized in that: The guide device (10) is a guide groove structure arranged on the rear end of the vehicle frame (8).

9. An operating method of a rail-changing vehicle for replacing rails in a subway, characterized in that: The track-changing vehicle has four operating states: running state, track-changing operation state, track-collecting operation state, and rescue operation state; When the track-changing operation vehicle is in a running state, each operation device is retracted, and the track-changing operation vehicle is driven to the construction site via the bogie (3); When the rail-changing vehicle is in the rail-changing operation state, the rail-changing mechanical arm (7) cooperates with the rail clamp (4) and the track gauge control device (5) to adjust the position of the rails, and while the vehicle is moving, the old rails in the rail-bearing grooves are pushed out, and the new rails on the roadside or the center of the track are pushed into the rail-bearing grooves; When the rail-changing operation vehicle is in the rail-collecting operation state, the rail-changing operation vehicle and the rail-storing vehicle are connected, and the mechanical arm (7) transports the old steel rails removed during the rail-changing operation to the rail-storing vehicle through the guide device (10) to complete the rail-collecting operation; When the track-changing operation vehicle is in a rescue working state, the rescue devices (11) at the front and rear ends of the track-changing operation vehicle lift the vehicle frame to a certain height and restore it to a normal working position.

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