A swing lever rail switching device

Abstract

This invention discloses a swing-arm rail changing device, belonging to the technical field of rail changing devices. It includes a monorail moving box and an A-frame. The monorail moving box has rail clamps on both outer side walls. A take-up winch and a lifting winch are fixedly installed inside the monorail moving box. A take-up pulley is fixedly installed at the top of the A-frame. This device forms a stable spatial operating structure through the A-frame and rope system, ensuring structural rigidity and balance during operation. The rail clamps of the moving box adopt a spring-rotating rod linkage design, which can firmly lock onto the rail, preventing the equipment from shifting or tipping over during operation. The U-shaped cross-section nylon wheel at the bottom of the moving box has a high degree of matching with the rail, further enhancing the stability of movement. In addition, the multiple sets of fixed and movable pulleys in the lifting assembly not only achieve effective force transmission and distribution but also reduce the risk of rope breakage, avoiding safety hazards during direct manual operation and significantly improving operational safety.

Description

Technical Field

[0001] This invention relates to the field of track changing device technology, specifically a swing arm track changing device. Background Technology

[0002] In railway track maintenance, track replacement work is typically carried out within a maintenance window, with each operation lasting only about one hour. However, existing mechanical track replacement equipment is bulky and heavy, and the preparation and cleanup processes are time-consuming. In addition, due to site limitations and regulatory requirements, it is often impossible to complete the work within the limited maintenance window. Therefore, track replacement work in railway sections still generally adopts the traditional method of manual track replacement using crowbars. This method is technologically outdated, labor-intensive, inefficient, and poses significant safety hazards. Therefore, developing a lightweight, easy-to-operate, and easily remote-controlled track replacement unit (with a single unit weighing less than 60 kg) to adapt to the working conditions of maintenance windows has become an urgent task that needs to be addressed on-site. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a lever-operated rail-changing device. This device solves the problem that existing mechanical rail-changing equipment is often too large and heavy, requiring lengthy preparation and cleanup times. Furthermore, due to site limitations and regulatory requirements, it is often impossible to complete the process within the limited maintenance window. Therefore, rail-changing operations in railway sections still predominantly rely on the traditional manual method using crowbars. This method is technologically outdated, labor-intensive, inefficient, and poses significant safety hazards. Therefore, developing a lightweight, easy-to-operate, remote-controlled rail-changing unit (weighing less than 60 kg per unit) to adapt to maintenance window conditions has become an urgent technical problem that needs to be solved on-site.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a swing arm rail changing device, comprising a monorail moving box, a U-shaped ring, and an A-frame. The U-shaped ring is fixedly installed at the bottom of the monorail moving box. The outer end walls of the monorail moving box are respectively provided with moving box rail clamps. A take-up winch and a lifting winch are fixedly installed inside the monorail moving box. A take-up pulley is hooked at the top of the A-frame. One end of the take-up cable is wound on the take-up winch. The other end of the take-up cable passes through the take-up pulley and is hooked on the U-shaped ring. A lifting assembly is provided on the A-frame. A pair of bottom nylon wheels are provided on the lower wall of the monorail moving box.

[0005] Preferably, the lifting assembly includes sleeper anchor bolts, a lifting fixed pulley, a clamp movable pulley, and a sleeper anchor bolt fixed pulley. The sleeper anchor bolts are installed on the sleepers on the ground. The sleeper anchor bolt fixed pulley is fixedly installed on the sleeper anchor bolts. The lifting fixed pulley is hooked to the other side of the top of the A-frame. A lifting cable hook is welded to the lifting fixed pulley. The side wall of the movable box has a movable box opening. A lifting cable is wound on the lifting winch. The other end of the lifting cable passes through the movable box opening and is wound around the sleeper anchor bolt fixed pulley, the lifting fixed pulley, and the clamp movable pulley. The other end of the lifting cable is hooked to the lifting cable hook. A rail clamp is fixedly installed on the clamp movable pulley.

[0006] Preferably, the movable box rail clamp includes a connecting plate, which is fixedly installed on the front and rear walls of the monorail movable box. A rotating rod is rotatably installed on the connecting plate. A spring connects the monorail movable box and the rotating rod. A slot is provided at the lower end of the rotating rod, and a hook is rotatably installed on the rotating rod.

[0007] Preferably, the opening of the movable box is located on the side wall of the monorail movable box near the A-frame, the lifting steel cable passes through the opening of the movable box, the U-shaped ring is fixedly installed on the side wall of the monorail movable box and located below the opening of the movable box, one end of the take-up and release steel cable is wrapped with an iron hook, and the take-up and release steel cable is hooked to the U-shaped ring by the iron hook.

[0008] Preferably, the cross-sectional shape of the nylon wheel at the bottom of the mobile box is U-shaped.

[0009] Preferably, a lithium battery is provided inside the monorail moving box and on the side of the take-up and take-down winch and the lifting winch.

[0010] Beneficial effects This invention provides a swing-bar rail changing device. This device adopts a mechanized and automated operation mode. Through the coordinated work of the winch, the lifting winch and the pulley system, it realizes the rapid hoisting, swinging and positioning of the rail. Specifically, by coordinating the hoisting and lifting of the steel cable, the damaged rail can be vertically hoisted, swung outward to the outside of the sleeper, and smoothly lowered to the ballast shoulder. Then, the spare rail is installed in the same way. The whole process is continuous and smooth, without the need for multiple people or frequent adjustments, which greatly reduces manual intervention and operation steps. It is several times more efficient than the traditional manual crowbar rail changing method and effectively shortens the total time of rail changing operation. This device forms a stable spatial operating framework through an A-frame and rope system, ensuring structural rigidity and balance during operation. The movable box rail clamp adopts a spring and rotating rod linkage design, which can firmly lock onto the rail and prevent the equipment from shifting or tipping over during operation. The U-shaped cross-section of the movable box bottom nylon wheel has a high degree of matching with the rail, further enhancing the stability of movement. In addition, the multiple sets of fixed pulleys and movable pulleys in the lifting assembly not only realize the effective transmission and distribution of force, but also reduce the risk of rope breakage, avoid the safety hazards of direct manual operation, and significantly improve the safety of operation. This device is not only suitable for standard rail replacement operations, but can also replace traditional rail-mounted guns for lateral and longitudinal rail dragging operations, achieving multiple uses in one machine. By adjusting the position of the rail clamps and the direction of the ropes, it can adapt to different rail types and working environments, and has strong versatility and adaptability. The integrated design of the lithium battery allows the equipment to work independently without external power supply and supports remote control operation, further expanding its application scenarios, especially suitable for remote or power-inconvenient railway sections. Each component of this device is ingeniously designed and has a clearly defined function: the take-up and release winches and the lifting winches work together to control the tilt angle adjustment of the A-frame and the lifting action of the rails respectively; the hook and spring structure of the moving box rail clamps ensures adaptive adjustment of the clamping force to adapt to different rail widths; the design of the moving box opening and the U-shaped ring ensures reliable fixation of the take-up and release steel cables and prevents slippage. The overall structure is reasonably laid out, easy to maintain, has a long service life, and high reliability. The widespread application of this device can significantly reduce manual labor input, lower labor intensity, and save human resource costs. At the same time, its efficient operation capability helps to shorten line closure time, reduce the impact on normal railway operation, and improve line utilization and transportation efficiency. In the long run, the implementation of this device will promote the mechanization and intelligent transformation of railway maintenance operations, provide strong support for railway safety operation, and have significant economic and social benefits. Attached Figure Description

[0011] Figure 1 This is a perspective structural diagram of a rocker arm track-changing device according to the present invention.

[0012] Figure 2 This is a schematic diagram of the movable box rail clamp structure of the swing arm rail changing device of the present invention.

[0013] In the diagram: 1. Fixed pulley for winding and unwinding; 2. Winding and unwinding steel cable; 3. Lifting winch; 4. Winding and unwinding winch; 5. Lithium battery; 6. Monorail moving box; 7. Moving box rail clamp; 8. Rail fastener; 9. Lifting fixed pulley; 10. Lifting steel cable hook; 11. Lifting steel cable; 12. Clamping pulley; 13. Rail clamp; 14. Sleeper anchor bolt fixed pulley; 15. Damaged rail; 16. A-frame; 17. U-shaped ring; 18. Moving box opening; 19. Connecting plate; 20. Spring; 21. Rotating rod; 22. Hook; 23. Nylon wheel at the bottom of the moving box. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1 and Figure 2 This invention provides a technical solution: a swing arm rail changing device, including a monorail moving box 6, a U-shaped ring 17, and an A-frame 16. The U-shaped ring 17 is fixedly installed at the bottom of the monorail moving box 6. The outer end walls of the monorail moving box 6 are respectively provided with moving box rail clamps 7. The monorail moving box 6 is fixedly installed with a take-up winch 4 and a lifting winch 3. The top of the A-frame 16 is hooked with a take-up fixed pulley 1. One end of the take-up steel cable 2 is wound on the take-up winch 4. The other end of the take-up steel cable 2 passes through the take-up fixed pulley 1 and is hooked on the U-shaped ring 17. The A-frame 16 is provided with a lifting assembly. The lower wall of the monorail moving box 6 is provided with a pair of moving box bottom nylon wheels 23.

[0016] In this embodiment, the lifting assembly includes a sleeper anchor bolt, a lifting fixed pulley 9, a clamp movable pulley 12, and a sleeper anchor bolt fixed pulley 14. The sleeper anchor bolt 8 is installed on the sleeper on the ground. The sleeper anchor bolt fixed pulley 14 is fixedly installed on the sleeper anchor bolt 8. The lifting fixed pulley 9 is hooked to the other side of the top of the A-frame 16. A lifting steel cable hook 10 is welded to the lifting fixed pulley 9. The side wall of the movable box has a movable box opening 18. A lifting steel cable 11 is wound around the lifting winch 3. The other end of the lifting steel cable 11 passes through the movable box opening 18 and is wound around the sleeper anchor bolt fixed pulley 14, the lifting fixed pulley 9, and the clamp movable pulley 12. The other end of the lifting steel cable 11 is hooked on the lifting steel cable hook 11. A rail clamp 13 is fixedly installed on the clamp movable pulley 12.

[0017] In this embodiment, the movable box rail clamp 7 includes a connecting plate 19, which is fixedly installed on the front and rear walls of the monorail movable box 6. A rotating rod 21 is rotatably installed on the connecting plate 19. A spring 20 is connected between the monorail movable box 6 and the rotating rod 21. A slot is provided at the lower end of the rotating rod 21, and a hook 22 is rotatably installed on the rotating rod 21.

[0018] In this embodiment, the opening 18 of the movable box is located on the side wall of the monorail movable box 6 near the A-frame 16. The lifting steel cable 2 passes through the opening 18 of the movable box. The U-shaped ring 17 is fixedly installed on the side wall of the monorail movable box 6 and located below the opening 18 of the movable box. One end of the take-up and release steel cable 2 is wrapped with an iron hook, and the take-up and release steel cable 2 is hooked onto the U-shaped ring 17 by the iron hook.

[0019] In this embodiment, the nylon wheel 23 at the bottom of the mobile box has a U-shaped cross-sectional shape.

[0020] In this embodiment, a lithium battery 5 is provided inside the monorail moving box 6 and on the side of the take-up winch 4 and the lifting winch 3.

[0021] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0022] Example: As shown in the attached diagram, the rail clamps 7 at both ends of the monorail moving box 6 are lowered, so that the hooks 22 are engaged on one side of the track, and the other end of the rotating rod 21 is engaged on the other side of the track through the slot. The rail clamps 7 are hooked onto one of the rails. The monorail moving box 6 is then erected. A-frame 16, composed of two seamless steel pipes, is erected, with its two feet about 15cm away from the damaged rail 15 on one side of the track center, with each foot straddling a sleeper. The take-up and release pulley 1 of the take-up and release winch 4 is hung on the top of the A-frame 16. The take-up and release cable 2 comes out from the take-up and release winch 4, passes through the take-up and release pulley 1, and one end of the take-up and release cable 2 is fixed to the U-shaped ring 17. The length of the take-up and release cable 2 is adjusted to tighten the A-frame 16, keeping it in a forward-leaning state. A lifting pulley 9 is then hung on the top of the A-frame 16, and the rail clamp 13 at one end of the lifting cable 11 is fixed to the damaged rail 15 to be replaced. One end of the lifting cable 11 comes out from the lifting winch 3, passes through the sleeper anchor bolt fixed pulley 14 fixed on the rail fastener 8 on one side of the damaged rail 15, through the lifting fixed pulley 9, through the clamping movable pulley 12, and finally is fixed on the hook 10 of the lifting cable 11. All cables are tightened appropriately to ensure that the A-frame 16 is always tilted forward to form a stable spatial operation structure.

[0023] Working principle Remove damaged rail 15 Start the lifting winch 3, vertically lift the damaged rail 15 about 30cm, and then stop the machine.

[0024] Start the winch 4, loosen the lifting cable 11, and swing the damaged rail 15 outward to the outside of the sleeper end and stop.

[0025] Restart the lifting winch 3 to lower the damaged rail 15 to the ballast shoulder and then stop the machine.

[0026] Install spare rail Move rail clamp 13 to the spare rail and clamp it.

[0027] Start the lifting winch 3, vertically lift the spare rail and stop the machine.

[0028] Start the take-up winch 4, tighten the take-up cable 2, swing the spare rail inward until it is above the rail groove, and then stop the machine.

[0029] Start the lifting winch 3 to smoothly lower the spare rail into the groove and complete the rail replacement.

[0030] This unit can not only efficiently replace 25m standard rails, but also rails of various lengths such as 50m and 100m. It can also replace and outperform rail-mounted guns in lateral and longitudinal rail dragging operations, significantly improving operational efficiency and safety.

[0031] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A swing arm rail changing device, comprising a monorail moving box (6), a U-shaped ring (17), and an A-frame (16), characterized in that, The U-shaped ring (17) is fixedly installed at the bottom of the monorail moving box (6). The outer two ends of the monorail moving box (6) are respectively provided with moving box rail clamps (7). The monorail moving box (6) is fixedly installed with a take-up winch (4) and a lifting winch (3). The top of the A-frame (16) is hooked with a take-up fixed pulley (1). One end of the take-up steel cable (2) is wound on the take-up winch (4). The other end of the take-up steel cable (2) passes through the take-up fixed pulley (1) and is hooked on the U-shaped ring (17). The A-frame (16) is provided with a lifting assembly. The lower wall of the monorail moving box (6) is provided with a pair of moving box bottom nylon wheels (23).

2. The swing arm track changing device according to claim 1, characterized in that... The lifting assembly includes sleeper anchor bolts, a lifting fixed pulley (9), a clamping movable pulley (12), and a sleeper anchor bolt fixed pulley (14). The sleeper anchor bolts (8) are installed on the sleepers on the ground. The sleeper anchor bolt fixed pulley (14) is fixedly installed on the sleeper anchor bolts (8). The lifting fixed pulley (9) is hooked to the other side of the top of the A-frame (16). A lifting steel cable hook (10) is welded to the lifting fixed pulley (9). The moving box has a movable box opening (18) on its side wall. A lifting cable (11) is wound around the lifting winch (3). The other end of the lifting cable (11) passes through the movable box opening (18) and is wound around the sleeper anchor bolt fixed pulley (14), the lifting fixed pulley (9), and the clamp moving pulley (12). The other end of the lifting cable (11) is hooked on the lifting cable hook (11). A rail clamp (13) is fixedly installed on the clamp moving pulley (12).

3. The swing arm track changing device according to claim 1, characterized in that... The movable box rail clamp (7) includes a connecting plate (19), which is fixedly installed on the front and rear walls of the monorail movable box (6). A rotating rod (21) is rotatably installed on the connecting plate (19). A spring (20) is connected between the monorail movable box (6) and the rotating rod (21). A slot is provided at the lower end of the rotating rod (21), and a hook (22) is rotatably installed on the rotating rod (21).

4. The swing arm rail changing device according to claim 1, characterized in that... The opening (18) of the movable box is located on the side wall of the monorail movable box (6) near the A-frame (16). The lifting steel cable (2) passes through the opening (18) of the movable box. The U-shaped ring (17) is fixedly installed on the side wall of the monorail movable box (6) and located below the opening (18) of the movable box. One end of the take-up and release steel cable (2) is wrapped with an iron hook. The take-up and release steel cable (2) is hooked onto the U-shaped ring (17) by the iron hook.

5. A rocker arm track-changing device according to claim 1, characterized in that... The nylon wheel (23) at the bottom of the mobile box has a U-shaped cross-section.

6. A rocker arm track-changing device according to claim 1, characterized in that... A lithium battery (5) is provided inside the monorail moving box (6) and on the side of the take-up winch (4) and the lifting winch (3).

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