Turnout joint part disease treatment tool

Abstract

The utility model relates to the technical field of railway track maintenance, in particular to a turnout junction disease treatment tool, and aims to solve the problems of insufficient adjustment precision, low operation efficiency, high labor intensity and high safety risk in the prior art. The turnout joint part disease treatment tool comprises a first grabbing mechanism, a second grabbing mechanism and an action connecting rod. The action connecting rod drives the first grabbing mechanism and the second grabbing mechanism which are connected to the first stock rail and the second stock rail respectively to get close to each other or get away from each other so as to adjust the close-fitting gap of the turnout. The turnout joint part disease treatment tool is simple to operate and easy to disassemble, accurate track gauge adjustment is achieved so as to meet the turnout close attachment standard, the operation time is shortened, the labor cost is saved, the safety risk of maintenance personnel is reduced, and the problems that an existing turnout maintenance process is inaccurate, low in efficiency, high in labor intensity and high in safety risk are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway track maintenance, in particular to a tool for repairing defects at a turnout joint. Background Art

[0002] As an important dynamic component of the railway system, the maintenance of turnouts in railway facilities faces great challenges. The defect problem of turnout joints is particularly prominent, which mainly includes three aspects: the turnout is not tightly fitted, the turnout is too tightly fitted, and the turnout has a strong tight fit in one position but not in another. Most of the existing turnout maintenance processes rely on manual and hand-held tools, which limits the accuracy of the operation and often leads to inaccurate adjustments due to tool limitations and human errors. At the same time, the prevalence of manual operations and the lack of automated tools seriously restrict maintenance efficiency. Outdoor operations are labor-intensive, and fatigue accumulation further increases safety risks.

[0003] The existing turnout maintenance process has problems such as insufficient adjustment accuracy, low operating efficiency, high labor intensity and high safety risks. Utility Model Content

[0004] The utility model aims to provide a tool for repairing defects at the junction of turnouts, so as to solve the technical problems existing in the related technologies, namely, insufficient adjustment accuracy, low operation efficiency, high labor intensity and high safety risks.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] The turnout joint defect treatment tool provided by the utility model comprises:

[0007] A first grabbing mechanism, a second grabbing mechanism and an action link. The turnout joint includes a first basic rail and a second basic rail which are parallel to each other and a first point rail and a second point rail which are arranged between the first basic rail and the second basic rail. The first grabbing mechanism and the second grabbing mechanism are respectively connected to the two ends of the action link, the first grabbing mechanism is connected to the first basic rail, and the second grabbing mechanism is connected to the second basic rail. The action link is telescopic to drive the first grabbing mechanism and the second grabbing mechanism to move toward or away from each other, thereby adjusting the track gauges of the first basic rail and the second basic rail, and then changing the close fit gap between the first point rail and the first basic rail or the close fit gap between the second point rail and the second basic rail.

[0008] Specifically, the repair tool further includes a driving mechanism. The action connecting rod includes a cylinder body, a first connecting rod and a second connecting rod. The first connecting rod is inserted into one end of the cylinder body and is detachably connected to the first grasping mechanism, and the second connecting rod is inserted into an end of the cylinder body away from the first connecting rod and is detachably connected to the first grasping mechanism. The driving mechanism is connected to the action connecting rod and is used to drive the action connecting rod to extend or shorten.

[0009] Optionally, the cylinder body is an electric cylinder, the first connecting rod and the second connecting rod are both push rods. The driving mechanism includes a motor, a gear and two racks respectively connected to the first connecting rod and the second connecting rod, and the motor drives the gear to engage with the two racks to drive the first connecting rod and the second connecting rod to complete the extension and retraction.

[0010] Optionally, the cylinder body is a hydraulic cylinder, and the first connecting rod and the second connecting rod are both hydraulic output rods. The driving mechanism is configured as a hydraulic pump, which is used to drive the first connecting rod and the second connecting rod to complete extension and retraction.

[0011] Specifically, the control valve is connected to the hydraulic pump, one end of the hydraulic lock is connected to the cylinder body (310), and the other end is connected to the control valve, and is used to lock the oil circuit to improve the control accuracy of the action connecting rod (300).

[0012] Specifically, the first gripping mechanism includes a first saddle, and the second gripping mechanism includes a second saddle. The first saddle and the second saddle are respectively connected to the side where the first base rail and the second base rail are close to each other. The first saddle and the second saddle move away from each other to push the first base rail and the second base rail away from each other, thereby changing the close gap between the first point rail and the first base rail or the second point rail and the second base rail.

[0013] Specifically, the first saddle includes a first push block, and the second saddle includes a second push block, and the second push block is longer than the first push block. One end of the first push block is connected to the first connecting rod, and the other end abuts against the first basic rail. One end of the second push block is connected to the second connecting rod, and the other end abuts against the second basic rail. When the track gauge needs to be increased, the action connecting rod drives the first push block and the second push block to push the first basic rail and the second basic rail away from each other, and then away from each other to adjust the track gauge.

[0014] Specifically, the first saddle and the second saddle are both provided with notches, and when the first saddle and the second saddle are respectively in contact with the first base rail and the second base rail, the first point rail and the second point rail are both inserted into the notches.

[0015] Specifically, the first gripping mechanism and the second gripping mechanism both include hooks. The two hooks are respectively connected to the sides of the first base rail and the second base rail that are away from each other, and the two hooks move toward each other to pull the first base rail and the second base rail closer to change the close fit gap between the first point rail and the first base rail or between the second point rail and the second base rail.

[0016] Specifically, the hook includes a clamping block, and the clamping block is provided with a clamping slot. The clamping block is connected to the first connecting rod, and the clamping slot is used to clamp the first basic rail and the second basic rail. When the track gauge needs to be reduced, the action connecting rod drives the two clamping blocks to move toward each other, thereby pulling the first basic rail and the second basic rail closer to each other to adjust the track gauge.

[0017] Based on the above technical solutions, the beneficial effects of the present invention are analyzed as follows:

[0018] The utility model provides a tool for repairing the defects of a turnout joint, comprising:

[0019] A first grabbing mechanism, a second grabbing mechanism and an action link. The turnout joint includes a first basic rail and a second basic rail that are parallel to each other, and a first point rail and a second point rail that are arranged between the first basic rail and the second basic rail. The first grabbing mechanism and the second grabbing mechanism are respectively connected to the two ends of the action link, the first grabbing mechanism is connected to the first basic rail, and the second grabbing mechanism is connected to the second basic rail. The action link is telescopic to drive the first grabbing mechanism and the second grabbing mechanism to move toward or away from each other, thereby adjusting the gauge of the first basic rail and the second basic rail, and then changing the close fit gap between the first point rail and the first basic rail or the second point rail and the second basic rail.

[0020] In specific application, the first gripping mechanism and the second gripping mechanism are connected to the first basic rail and the second basic rail whose spacing needs to be adjusted at the defective part of the turnout junction, and the action connecting rod is extended and retracted to drive the first gripping mechanism and the second gripping mechanism to move toward or away from each other, thereby adjusting the track gauge of the first basic rail and the second basic rail and then changing the close fitting gap between the first point rail and the first basic rail or the second point rail and the second basic rail.

[0021] It can be seen that compared with the existing technology, the turnout joint defect repair tool is simple to operate and easy to disassemble. Through the cooperation of the first gripping mechanism, the second gripping mechanism and the action connecting rod, precise gauge adjustment can be achieved to meet the turnout close fitting standard, shortening the operation time, saving labor costs, reducing the safety risks of maintenance personnel, and solving the problems of inaccuracy, low efficiency, high labor intensity and safety risks in the existing turnout maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 1 The overall installation diagram of the turnout joint defect treatment tool provided by the embodiment of the utility model;

[0024] Figure 2 Installation diagram of the turnout joint defect repair tool when two hooks are used Figure 1 ;

[0025] Figure 3 Installation diagram of the turnout joint defect repair tool when two hooks are used Figure 2 ;

[0026] Figure 4 Installation diagram of turnout joint defect repair tool when the first saddle and the second saddle are selected Figure 1 ;

[0027] Figure 5 Installation diagram of turnout joint defect repair tool when the first saddle and the second saddle are selected Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the structure of the turnout joint defect repair tool when the first saddle and the second saddle are selected.

[0029] icon:

[0030] 001, first basic rail; 002, second basic rail; 003, first point rail; 004, second point rail;

[0031] 100, first grabbing mechanism; 110, first saddle; 111, first push block; 101, notch;

[0032] 200, second grabbing mechanism; 210, second saddle; 211, second push block; 220, hook; 221, clamping block; 2201, clamping slot;

[0033] 300, action connecting rod; 310, cylinder body; 320, first connecting rod; 330, second connecting rod;

[0034] 400. Driving mechanism. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0037] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] The existing turnout maintenance process has problems such as insufficient adjustment accuracy, low operating efficiency, high labor intensity and high safety risks.

[0039] In view of this, the utility model provides a tool for repairing defects of a turnout joint, comprising: a first gripping mechanism 100, a second gripping mechanism 200 and an action link 300. The turnout joint comprises a first basic rail 001 and a second basic rail 002 which are parallel to each other, and a first point rail 003 and a second point rail 004 which move between the first basic rail 001 and the second basic rail 002. The first gripping mechanism 100 and the second gripping mechanism 200 are respectively connected to the two ends of the action link 300, the first gripping mechanism 100 is connected to the first basic rail 001, and the second gripping mechanism 200 is connected to the second basic rail 002. The action link 300 is telescopic to drive the first gripping mechanism 100 and the second gripping mechanism 200 to move toward or away from each other, thereby adjusting the gauge of the first basic rail 001 and the second basic rail 002, and then changing the close gap between the first point rail 003 and the first basic rail 001 or the second point rail 004 and the second basic rail 002.

[0040] Based on the above technical solutions, the turnout joint defect treatment tool provided by the utility model can achieve the following technical effects:

[0041] The turnout joint defect repair tool is simple to operate and easy to disassemble. Through the cooperation of the first gripping mechanism 100, the second gripping mechanism 200 and the action connecting rod 300, accurate track gauge adjustment is achieved to meet the turnout close fitting standard, shortening the operation time, saving labor costs, reducing the safety risks of maintenance personnel, and solving the problems of inaccuracy, low efficiency, high labor intensity and safety risks in the existing turnout maintenance process.

[0042] The following combination Figures 1 to 6 The structure and shape of the turnout joint defect treatment tool provided in this embodiment are described in detail:

[0043] Regarding the structural composition of the turnout joint, specifically:

[0044] like Figure 2 As shown, the turnout joint includes a first basic rail 001 and a second basic rail 002, and a first point rail 003 and a second point rail 004, which are parallel to each other. A traction rod is horizontally connected between the first point rail 003 and the second point rail 004. The distance between the first basic rail 001 and the second basic rail 002 is greater than the distance between the first point rail 003 and the second point rail 004. The first point rail 003 and the second point rail 004 move between the first basic rail 001 and the second basic rail 002. When the first point rail 003 is attached to the first basic rail 001, a wheel flange groove is formed between the second point rail 004 and the second basic rail 002 for the train wheel flange to pass through; when the second point rail 004 is attached to the second basic rail 002, a wheel flange groove is formed between the first point rail 003 and the first basic rail 001 for the train wheel flange to pass through. At the same time, there is only one wheel flange groove and a close gap. The first point rail 003 is attached to the first basic rail 001 and the second point rail 004 is attached to the second basic rail 002 to switch between the two states to achieve the displacement of the wheel flange groove and complete the track change. The close gap between the first point rail 003 and the first basic rail 001 is defined as the first gap. The close gap between the second point rail 004 and the second basic rail 002 is defined as the second gap.

[0045] Regarding the working principle of the action link 300, specifically:

[0046] The repair tool also includes a driving mechanism 400. The action connecting rod 300 includes a cylinder body 310, a first connecting rod 320 and a second connecting rod 330. The first connecting rod 320 is inserted into one end of the cylinder body 310 and is detachably connected to the first grasping mechanism 100. The second connecting rod 330 is inserted into one end of the cylinder body 310 away from the first connecting rod 320 and is detachably connected to the first grasping mechanism 100. The driving mechanism 400 is connected to the action connecting rod 300 and is used to drive the action connecting rod 300 to extend or shorten. Among them, the detachable connection can be selected from threaded connection, clamping, etc.

[0047] In an optional solution of this embodiment, the action connecting rod 300 is electrically driven. The cylinder body 310 is an electric cylinder, and the first connecting rod 320 and the second connecting rod 330 are both push rods. The driving mechanism 400 includes a motor, a gear, and two racks respectively connected to the first connecting rod 320 and the second connecting rod 330. The motor drives the gear to mesh with the two racks to drive the first connecting rod 320 and the second connecting rod 330 to complete the extension and retraction.

[0048] In the optional solution of this embodiment, Figure 1 As shown, the action connecting rod 300 is hydraulically driven. The cylinder body 310 is a hydraulic cylinder, and the first connecting rod 320 and the second connecting rod 330 are both hydraulic output rods. The driving mechanism 400 includes a hydraulic pump, a control valve and a hydraulic lock. The hydraulic pump is used to drive the first connecting rod 320 and the second connecting rod 330 to complete the extension and retraction. The control valve is used to control the flow direction and pressure of the hydraulic oil to achieve basic control of the actuator. The hydraulic lock responds quickly and can be locked according to the displacement and pressure changes, thereby improving the control accuracy of the system and maintaining a constant pressure.

[0049] In the solution of this embodiment, the driving mechanism 400 also includes an oil tank and a filter. The oil tank provides hydraulic oil for the operation of the hydraulic cylinder. The filter is used to filter the hydraulic oil to prevent impurities from entering the hydraulic system.

[0050] In an optional solution of this embodiment, the action connecting rod 300 is driven by air pressure. The cylinder body 310 is a pneumatic cylinder, and the first connecting rod 320 and the second connecting rod 330 are both pneumatic output rods. The driving mechanism 400 includes an air pump and a tightening unit. The air pump is used to drive the first connecting rod 320 and the second connecting rod 330 to complete the extension and contraction. The tightening unit and the locking unit can respond quickly, and the position is maintained by precise control, thereby enhancing the operating accuracy of the system and ensuring stable support of the load.

[0051] In order to match different disease conditions of the turnout joint, in the optional solution of this embodiment, the first gripping mechanism 100 includes a first saddle 110, and the second gripping mechanism 200 includes a second saddle 210. The first saddle 110 and the second saddle 210 are respectively connected to the side where the first base rail 001 and the second base rail 002 are close to each other. The first saddle 110 and the second saddle 210 move in opposite directions to push the two first base rails 001 and the second base rails 002 away from each other, thereby changing the first gap or the second gap.

[0052] Specifically, Figure 6 As shown, the first saddle 110 includes a first push block 111, and the second saddle 210 includes a second push block 211. The second push block 211 is longer than the first push block 111 so as to cross the wheel rim groove. One end of the first push block 111 is connected to the first connecting rod 320, and the other end is abutted against the first basic rail 001. One end of the second push block 211 is connected to the second connecting rod 330, and the other end is abutted against the second basic rail 002. When the track gauge needs to be increased, the action connecting rod 300 drives the first push block 111 and the second push block 211 away from each other, and then pushes the first basic rail 001 and the second basic rail 002 away from each other to adjust the track gauge. The first saddle 110 and the second saddle 210 are both provided with a notch 101. When the first saddle 110 and the second saddle 210 are respectively abutted against the first basic rail 001 and the second basic rail 002, the first point rail 003 and the second point rail 004 are both inserted into the notch 101 to avoid interference.

[0053] In the optional solution of this embodiment, the first gripping mechanism 100 and the second gripping mechanism 200 both include a hook 220. The two hooks 220 are respectively connected to the side of the first basic rail 001 and the second basic rail 002 that are away from each other, and the two hooks 220 move toward each other to pull the first basic rail 001 and the second basic rail 002 closer to each other so as to change the first gap or the second gap. The hook 220 includes a clamping block 221, and the clamping block 221 is provided with a clamping groove 2201. The clamping block 221 is connected to the first connecting rod 320, and the clamping groove 2201 is used to clamp the first basic rail 001 and the second basic rail 002. When the track gauge needs to be reduced, the action connecting rod 300 drives the two clamping blocks 221 to move toward each other, thereby pulling the first basic rail 001 and the second basic rail 002 closer to each other to adjust the track gauge.

[0054] In the scheme of this embodiment, the remediation tool also includes a power supply and a control device. The power supply uses a lead-acid battery, which is easy to operate and maintain, stable and reliable, and is not restricted by factors such as region and altitude; the control device uses a microcomputer combined with an LED display for control, which has the advantages of anti-interference, small size, light weight, and low maintenance workload.

[0055] In summary, the specific working process of the turnout joint defect treatment tool provided in this embodiment is as follows:

[0056] According to the actual situation of the turnout joint, the first grabbing mechanism 100 and the second grabbing mechanism 200 select the first saddle 110 and the second saddle 210 respectively or select the hook 220 at the same time.

[0057] When the turnout joint is not close-fitting, the first gripping mechanism 100 and the second gripping mechanism 200 both select the hook 220 and install the hook 220 on the first connecting rod 320 and the second connecting rod 330. The clamping blocks 221 of the two hooks 220 are respectively clamped on the side of the first basic rail 001 and the second basic rail 002 that need to adjust the spacing at the defective part of the turnout joint. The control motor, hydraulic pump or air pump drives the action connecting rod 300 to contract, thereby driving the two hooks 220 to move closer to each other and then adjusting the first gap or the second gap, so as to meet the close-fitting use standard of the turnout.

[0058] When the close contact force of the turnout joint is too large, the first gripping mechanism 100 selects the first saddle 110, and the second gripping mechanism 200 selects the second saddle 210, and the first saddle 110 and the second saddle 210 are installed on the first connecting rod 320 and the second connecting rod 330. The first push block 111 of the first saddle 110 and the second push block 211 of the second saddle 210 are respectively abutted against the side of the first basic rail 001 and the second basic rail 002 that need to adjust the spacing at the defective part of the turnout joint. The control motor, hydraulic pump or air pump drives the action connecting rod 300 to extend, thereby driving the first push block 111 and the second push block 211 to move away from each other and then adjusting the first gap or the second gap, so as to meet the close contact use standard of the turnout.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A tool for repairing turnout joint defects, characterized in that: include: A first grasping mechanism (100), a second grasping mechanism (200) and an actuating connecting rod (300); The turnout joint comprises a first basic rail (001) and a second basic rail (002) which are parallel to each other, and a first point rail (003) and a second point rail (004) which are arranged between the first basic rail (001) and the second basic rail (002); The first grasping mechanism (100) and the second grasping mechanism (200) are respectively connected to two ends of the action connecting rod (300); The first gripping mechanism (100) is connected to the first base rail (001); The second gripping mechanism (200) is connected to the second base rail (002); The action link (300) is extended and retracted to drive the first gripping mechanism (100) and the second gripping mechanism (200) to move toward or away from each other, thereby adjusting the track gauges of the first basic rail (001) and the second basic rail (002) and thereby changing the close fit gap between the first point rail (003) and the first basic rail (001) or the close fit gap between the second point rail (004) and the second basic rail (002).

2. The turnout joint defect repair tool according to claim 1, characterized in that: Also includes a driving mechanism (400); The action connecting rod (300) comprises a cylinder body (310), a first connecting rod (320) and a second connecting rod (330); The first connecting rod (320) is inserted into one end of the cylinder body (310) and is detachably connected to the first grabbing mechanism (100); The second connecting rod (330) is inserted into an end of the cylinder (310) away from the first connecting rod (320), and is detachably connected to the first grasping mechanism (100); The driving mechanism (400) is connected to the action connecting rod (300) and is used to drive the action connecting rod (300) to extend or shorten.

3. The turnout joint defect repair tool according to claim 2, characterized in that: The driving mechanism (400) comprises a motor, a gear and two racks respectively connected to the first connecting rod (320) and the second connecting rod (330); the motor drives the gear to engage with the two racks to drive the first connecting rod (320) and the second connecting rod (330) to complete extension and retraction.

4. The turnout joint defect repair tool according to claim 2, characterized in that: The cylinder body (310) is a hydraulic cylinder, and the first connecting rod (320) and the second connecting rod (330) are configured as piston rods; The driving mechanism (400) comprises a hydraulic pump, which is used to drive the first connecting rod (320) and the second connecting rod (330) to complete extension and retraction.

5. The turnout joint defect repair tool according to claim 4, characterized in that: The driving mechanism (400) further comprises a control valve and a hydraulic lock; The control valve is connected to the hydraulic pump; One end of the hydraulic lock is connected to the cylinder body (310), and the other end is connected to the control valve, and is used to lock the oil circuit to improve the control accuracy of the action connecting rod (300).

6. The turnout joint defect repair tool according to claim 2, characterized in that: The first gripping mechanism (100) comprises a first saddle (110); The second gripping mechanism (200) comprises a second saddle (210); The first saddle (110) and the second saddle (210) are respectively connected to the first base rail (001) and the second base rail (002) on one side close to each other; The first saddle (110) and the second saddle (210) move in opposite directions to push the first basic rail (001) and the second basic rail (002) away from each other, thereby changing the close fit gap between the first point rail (003) and the first basic rail (001) or the close fit gap between the second point rail (004) and the second basic rail (002).

7. The turnout joint defect repair tool according to claim 6, characterized in that: The first saddle (110) comprises a first push block (111); The second saddle (210) comprises a second push block (211); The second pushing block (211) is longer than the first pushing block (111); One end of the first push block (111) is connected to the first connecting rod (320), and the other end abuts against the first base rail (001); One end of the second push block (211) is connected to the second connecting rod (330), and the other end is in contact with the second base rail (002); When the track gauge needs to be increased, the action connecting rod (300) drives the first push block (111) and the second push block (211) to move away from each other, thereby pushing the first basic rail (001) and the second basic rail (002) to move away from each other to adjust the track gauge.

8. The turnout joint defect repair tool according to claim 7, characterized in that: The first saddle (110) and the second saddle (210) are both provided with a notch (101); when the first saddle (110) and the second saddle (210) are respectively in contact with the first base rail (001) and the second base rail (002), the first point rail (003) and the second point rail (004) are both inserted into the notch (101).

9. The turnout joint defect repair tool according to claim 2, characterized in that: The first grabbing mechanism (100) and the second grabbing mechanism (200) both include a hook (220); The two hooks (220) are respectively connected to the first basic rail (001) and the second basic rail (002) on one side away from each other; The two hooks (220) move toward each other to pull the first basic rail (001) and the second basic rail (002) closer together, thereby changing the close fit gap between the first point rail (003) and the first basic rail (001) or the close fit gap between the second point rail (004) and the second basic rail (002).

10. The turnout joint defect repair tool according to claim 9, characterized in that: The hook (220) comprises a clamping block (221), and the clamping block (221) is provided with a clamping slot (2201); The clamping block (221) is connected to the first connecting rod (320), and the clamping slot (2201) is used to clamp the first basic rail (001) and the second basic rail (002); When the track gauge needs to be reduced, the action connecting rod (300) drives the two clamping blocks (221) to move toward each other, thereby pulling the first basic rail (001) and the second basic rail (002) closer to each other to adjust the track gauge.

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