Special lifting appliance for subway track laying rail car

Abstract

The utility model discloses a special lifting appliance for a subway track laying rail car, which relates to the technical field of subway track laying and comprises two lifting frames, a top plate and a mounting plate, the tops of the two lifting frames are fixedly connected with each other through the top plate, and the middles of the two lifting frames are fixedly connected with each other through the mounting plate; the special lifting appliance comprises a lifting frame, a clamping structure is arranged on the inner side of the lower end of the lifting frame, the clamping structure comprises a moving plate, and synchronous structures are arranged at the two ends of the moving plate. At the moment, the gravity center of the object can apply force in the direction away from the center of the moving plate to the moving plate, the four pulleys keep the moving plate in a stable state through synchronous rotation of the four pulleys, inclination of the moving plate caused by deviation of the gravity center of the object is prevented, and then inclination of the whole lifting appliance is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of subway track laying, in particular to a special lifting tool for a subway track laying rail vehicle. Background Technique

[0002] A special lifting tool for a subway track laying rail vehicle is a lifting tool designed for the subway track laying process. It is mainly used for hoisting and transporting railway construction materials such as tracks, track panels, and turnouts.

[0003] For example, a special lifting tool for a subway track laying rail vehicle with the publication number CN219009719U includes a transfer main body for the transfer and lifting of the rail vehicle, a limiting mechanism, which includes a positioning component and a pressing component. Among them, the positioning component is rotatably connected to the transfer main body, and the pressing component is arranged on the positioning component and is located below the transfer main body. A guiding member is arranged outside the positioning component on the other side corresponding to the pressing component. Through the cooperation of the guiding member and the transfer main body, when the transfer main body and the rail vehicle are connected by a steel wire and straightened, the guiding member can, under the action of the straightened steel wire, push the positioning component to move downward below the transfer main body, indirectly driving the pressing component to approach the rail vehicle. When the steel wire is straightened, both the positioning component and the pressing component are closely attached to the rail vehicle, realizing the support for the gap generated by the lifting of the lifting tool and the rail vehicle, reducing the shaking generated by lifting, improving the stability of the lifting movement of the rail vehicle, and further enabling the rail flatbed to be lifted and lowered smoothly.

[0004] For a special lifting tool for a subway track laying rail vehicle in the above technical solution, by making both the positioning component and the pressing component closely attached to the rail vehicle, the stability of the lifting movement of the rail vehicle is improved. In the actual use process, when the center of gravity of the object being lifted shifts on the lifting tool during the object hoisting process, it may cause the lifting tool to tilt and pose a safety hazard. Summary of the Invention

[0005] The purpose of the utility model is to provide a special lifting tool for a subway track laying rail vehicle to solve the problem that when the center of gravity of the object being lifted shifts on the lifting tool in the above background technique, it may cause the lifting tool to tilt and pose a safety hazard.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A special lifting tool for a subway track laying rail vehicle includes a lifting frame, a top plate, and a mounting plate. There are two lifting frames, and the tops of the two lifting frames are fixedly connected to each other through the top plate, and the two lifting frames are fixedly connected to each other through the mounting plate in the middle;

[0007] A clamping structure is provided inside the lower end of the lifting frame. The clamping structure includes a moving plate, and synchronous structures are provided at both ends of the moving plate. The synchronous structure includes a synchronous shaft rotatably connected inside the moving plate. Conical teeth are fixedly connected to both ends of the synchronous shaft. Pulley wheels are rotatably connected to the inner sides of the four corners of the moving plate, and a connecting shaft is fixedly connected between the two pulley wheels. A conical tooth ring is fixedly connected to the outer side of the middle of the connecting shaft, and the conical tooth ring meshes with the conical teeth at both ends of the synchronous shaft.

[0008] Preferably, lifting rings are fixedly connected to the four corners of the top of the top plate, and sliding rails are fixedly connected to the inner sides of both ends of the lifting frame. The outer sides of the pulley wheels are rotatably connected to the inside of the sliding rails.

[0009] Preferably, an opening is provided in the middle of the mounting plate, and a hydraulic rod is fixedly connected inside. The lower end of the hydraulic rod is fixedly connected to the middle of the top of the moving plate.

[0010] Preferably, two connecting bases are fixedly connected to both sides of the top of the moving plate. A clamping rod is rotatably connected inside the connecting base, and a fixing groove with an arc-shaped structure is provided at the bottom of the clamping rod.

[0011] Preferably, a rotating block is rotatably connected to the inner side of the upper end of the clamping rod. A spring is fixedly connected between the two mirror-image distributed rotating blocks. The two clamping rods rotate around the connecting base to form a scissor structure.

[0012] Preferably, extension frames are fixedly connected to the outer sides of both ends of the lifting frame. The extension frames extend towards the inner side of the lifting frame, and a limiting roller is rotatably connected to the inner side of the end of the extension frame away from the lifting frame.

[0013] Preferably, the limiting roller is located at the bottom of the lifting frame, and each limiting roller is aligned with the clamping rod. The outer side of each limiting roller away from the extension frame is in contact with the outer side of the clamping rod.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] For this special lifting tool for subway track laying rail cars, a synchronous structure is provided. When the center of gravity of the object clamped by the fixture at the bottom of the moving plate shifts, at this time, the center of gravity of the object will exert a force on the moving plate in the direction away from the center of the moving plate. Through the synchronous rotation of the four pulley wheels, the four pulley wheels keep the moving plate in a stable state, preventing the center of gravity of the object from shifting and causing the moving plate to tilt, and further preventing the entire lifting tool from tilting;

[0016] Furthermore, a clamping structure is provided. The spring will exert a force on the two rotating blocks towards the middle of the moving plate, causing the two rotating blocks to approach each other towards the middle of the moving plate. The spring drives the clamping rod to rotate around the connecting base through the two rotating blocks, causing the lower ends of the two distributed clamping rods to move away from each other;

[0017] Furthermore, through the limitation of the clamping rod by the limiting roller, the clamping rod rotates around the connecting base, so that the lower ends of the two relatively distributed clamping rods form an arc-shaped structure fixing groove to fix the object, realizing the hoisting of the track by the hoist and simultaneously taking into account the hoisting of non-track objects with different widths. Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 is a bottom structural schematic diagram of the present utility model;

[0020] Figure 3 is an extension frame structural schematic diagram of the present utility model;

[0021] Figure 4 is a moving plate structural schematic diagram of the present utility model;

[0022] Figure 5 is a sectional structural schematic diagram of the moving plate of the present utility model;

[0023] Figure 6 is a sectional structural schematic diagram of the clamping rod of the present utility model.

[0024] In the figure: 1, hoisting frame; 2, top plate; 3, mounting plate; 4, slide rail; 5, lifting ring; 6, hydraulic rod; 7, moving plate; 8, synchronizing shaft; 9, pulley; 10, connecting shaft; 11, bevel gear ring; 12, connecting base; 13, clamping rod; 14, rotating block; 15, spring; 16, extension frame; 17, limiting roller. Detailed Embodiment

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1:

[0027] Please refer to Figure 1 - Figure 6 , the present utility model provides the following technical solutions:

[0028] A special hoist for a subway track-laying rail vehicle, including a hoisting frame 1, a top plate 2, and a mounting plate 3. There are two hoisting frames 1, and the tops of the two hoisting frames 1 are fixedly connected to each other through the top plate 2, and the two hoisting frames 1 are fixedly connected to each other through the mounting plate 3 in the middle;

[0029] On the inner side of the lower end of the lifting frame 1, there is a clamping structure, and the clamping structure includes a moving plate 7. Both ends of the moving plate 7 are provided with a synchronization structure. The synchronization structure includes a synchronization shaft 8 rotatably connected to the inside of the moving plate 7. At both ends of the synchronization shaft 8, there are fixedly connected bevel gears. Inside the four corners of the moving plate 7, there are rotatably connected pulleys 9. Between two of the pulleys 9, there is a fixedly connected connecting shaft 10. On the outer side of the middle of the connecting shaft 10, there is a fixedly connected bevel gear ring 11, and the bevel gear ring 11 meshes with the bevel gears at both ends of the synchronization shaft 8.

[0030] At the four corners of the top of the top plate 2, there are fixedly connected lifting rings 5. On the inner sides of both ends of the lifting frame 1, there are fixedly connected slide rails 4, and the inside of the slide rails 4 is rotatably connected to the outer sides of the pulleys 9.

[0031] In the middle of the mounting plate 3, there is an opening, and inside, there is a fixedly connected hydraulic rod 6. The lower end of the hydraulic rod 6 is fixedly connected to the middle of the top of the moving plate 7.

[0032] On both sides of the top of the moving plate 7, there are fixedly connected two connecting bases 12. Inside the connecting bases 12, there are rotatably connected clamping rods 13, and at the bottom of the clamping rods 13, there is a fixed groove in an arc structure.

[0033] On the inner side of the upper end of the clamping rod 13, there is a rotatably connected rotating block 14. Between two mirror-image distributed rotating blocks 14, there is a fixedly connected spring 15, and the two clamping rods 13 rotate around the connecting bases 12 to form a scissor structure.

[0034] On the outer sides of both ends of the lifting frame 1, there are fixedly connected extension frames 16. The extension frames 16 extend towards the inner side of the lifting frame 1. At the inner side of one end of the extension frames 16 away from the lifting frame 1, there is a rotatably connected limiting roller 17.

[0035] The limiting roller 17 is located at the bottom of the lifting frame 1, and each limiting roller 17 is aligned with the clamping rod 13, and on the side of each limiting roller 17 away from the extension frame 16, it is in contact with the outer side of the clamping rod 13.

[0036] Embodiment Two:

[0037] On the basis of Embodiment One, its specific working principle is as follows:

[0038] For a special lifting tool for a subway track-laying vehicle, during the up-and-down movement of the moving plate 7 inside the lifting frame 1, the moving plate 7 will drive the pulley 9 to move up and down with it. At the same time, the pulley 9 will rotate inside the slide rail 4. The two pulleys 9 are interconnected by a connecting shaft 10, so that the rotation speeds of the two pulleys 9 are kept consistent. At the same time, the rotation of the pulley 9 drives the connecting shaft 10 to rotate, and then the connecting shaft 10 drives the bevel gear ring 11 to rotate on its outer side. The bevel gear ring 11 meshes with the bevel gears at both ends of the synchronizing shaft 8, so that the bevel gear ring 11 drives the synchronizing shaft 8 to rotate inside the moving plate 7. When the synchronizing shaft 8 rotates, it will drive the bevel gear rings 11 at both ends of it to rotate at the same time. Through the meshing of the bevel gears at both ends of the synchronizing shaft 8 with the bevel gear ring 11, the synchronizing shaft 8 interferes with the rotation of the two connecting shafts 10, so that the rotation speeds of the two connecting shafts 10 are kept consistent during the rotation process, and the moving distances of the multiple pulleys 9 inside the slide rail 4 are kept consistent. When the center of gravity of the object clamped by the fixture at the bottom of the moving plate 7 is offset, at this time, the center of gravity of the object will apply a force to the moving plate 7 in the direction away from the center of the moving plate 7. Through the synchronous rotation of the four pulleys 9, the four pulleys 9 keep the moving plate 7 in a stable state, preventing the center of gravity of the object from shifting and causing the moving plate 7 to tilt, and further preventing the entire lifting tool from tilting;

[0039] The whole lifting tool is connected to the track-laying vehicle through the lifting ring 5. The lifting function of the whole lifting tool is controlled by the lifting structure on the track-laying vehicle. The hydraulic rod 6 drives the whole moving plate 7 to move up and down inside the two lifting frames 1. When the hydraulic rod 6 is in the extended state, this hydraulic rod 6 will drive the moving plate 7 to be at the lowest end inside the lifting frame 1. At the same time, the moving plate 7 will drive the pulley 9 to move to the lowest end of the slide rail 4 inside the slide rail 4. At this time, the spring 15 will apply a force towards the middle of the moving plate 7 to the two rotating blocks 14, so that the two rotating blocks 14 approach each other towards the middle of the moving plate 7, so that the spring 15 drives the clamping rod 13 to rotate around the connecting base 12 through the two rotating blocks 14, so that the lower ends of the two distributed clamping rods 13 move away from each other;

[0040] During the contraction of the hydraulic rod 6, the hydraulic rod 6 drives the moving plate 7 to move upward inside the lifting frame 1, so that the moving plate 7 drives the pulley 9 to move upward inside the slide rail 4. During the upward movement of the moving plate 7, the moving plate 7 drives the clamping rod 13 to move upward through the connecting base 12. During the upward movement of the clamping rod 13, the outer side of the clamping rod 13 will come into contact with the limiting roller 17. Relative to the clamping rod 13, the limiting roller 17 moves downward on the outer side of the clamping rod 13. Through the limiting of the clamping rod 13 by the limiting roller 17, the clamping rod 13 rotates around the connecting base 12, so that the lower ends of the two relatively distributed clamping rods 13 are fixed to the object in an arc-shaped structure fixing groove, realizing the lifting of the lifting tool for the track and at the same time taking into account the lifting of non-track objects with different widths.

[0041] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special lifting tool for subway track-laying rail cars, comprising a lifting frame (1), a top plate (2), and a mounting plate (3). There are two lifting frames (1), and the tops of the two lifting frames (1) are fixedly connected to each other through the top plate (2), and the two lifting frames (1) are fixedly connected to each other through the mounting plate (3) in the middle. It is characterized in that: A clamping structure is provided inside the lower end of the lifting frame (1), and the clamping structure includes a moving plate (7). Synchronous structures are provided at both ends of the moving plate (7). The synchronous structure includes a synchronous shaft (8) rotatably connected to the inside of the moving plate (7). Conical teeth are fixedly connected to both ends of the synchronous shaft (8). Pulley (9) is rotatably connected to the inner sides of the four corners of the moving plate (7), and a connecting shaft (10) is fixedly connected between the two pulleys (9). A conical tooth ring (11) is fixedly connected to the outer side of the middle of the connecting shaft (10), and the conical tooth ring (11) meshes with the conical teeth at both ends of the synchronous shaft (8).

2. The special lifting device for subway track laying rail vehicles according to claim 1, characterized in that: Hoisting rings (5) are fixedly connected to the four corners of the top of the top plate (2), and slide rails (4) are fixedly connected to the inner sides of both ends of the lifting frame (1), and the outside of the pulley (9) is rotatably connected to the inside of the slide rail (4).

3. The special lifting tool for subway track laying rail cars according to claim 1, wherein: There is an opening in the middle of the mounting plate (3), and a hydraulic rod (6) is fixedly connected inside, and the lower end of the hydraulic rod (6) is fixedly connected to the middle of the top of the moving plate (7).

4. The special spreader for subway track laying rail vehicle according to claim 3, characterized in that: Two connecting bases (12) are fixedly connected to both sides of the top of the moving plate (7), and a clamping rod (13) is rotatably connected to the inside of the connecting base (12), and a fixing groove with an arc-shaped structure is provided at the bottom of the clamping rod (13).

5. The special sling for subway track laying rail vehicle according to claim 4, characterized in that: A rotating block (14) is rotatably connected to the inner side of the upper end of the clamping rod (13), and a spring (15) is fixedly connected between the two mirror-image rotating blocks (14), and the two clamping rods (13) rotate around the connecting base (12) to form a scissors structure.

6. The special sling for subway track laying rail vehicle according to claim 5, characterized in that: Extension frames (16) are fixedly connected to the outer sides of both ends of the lifting frame (1), and the extension frames (16) extend towards the inner side of the lifting frame (1), and a limiting roller (17) is rotatably connected to the inner side of the end of the extension frame (16) away from the lifting frame (1).

7. The special lifting device for subway track laying rail vehicles according to claim 6, characterized in that: The limiting roller (17) is located at the bottom of the lifting frame (1), and each limiting roller (17) is aligned with the clamping rod (13), and the outer side of the clamping rod (13) is attached to the side of each limiting roller (17) away from the extension frame (16).

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