Lifting appliance and track lifting device

Abstract

The utility model relates to the technical field of lifting tools, in particular to a lifting appliance and a track lifting device.The lifting appliance comprises a first clamping arm, a second clamping arm, a supporting sleeve, a rotating shaft, a first flexible piece and a second flexible piece, the first clamping arm comprises a first traction part, a first connecting part and a first clamping part which are sequentially arranged from top to bottom, and the second clamping arm comprises a second traction part and a second connecting part which are sequentially arranged from top to bottom; the second clamping arm comprises a second traction part, a second connecting part and a second clamping part which are sequentially arranged from top to bottom, the supporting sleeve is fixedly connected to the first connecting part, the rotating shaft is fixedly connected to the second connecting part, and at least part of the rotating shaft is located in the supporting sleeve and rotationally matched with the supporting sleeve, so that the first clamping arm and the second clamping arm are rotationally connected; the first end of the first flexible piece is connected to the first traction part, and the first end of the second flexible piece is connected to the second traction part. The device is simple in structure, convenient to operate and suitable for tracks of various models, so that the physical burden of workers is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting tools technology, and in particular to a lifting tool and rail lifting device. Background Technology

[0002] In current rail transportation and installation operations, the lifting and handling of rails is a crucial yet extremely difficult step. Due to the unique shape and considerable weight of rails, traditional lifting tools often suffer from problems such as complex structure, inconvenient operation, and poor adaptability. This not only increases the physical burden on workers but also seriously affects construction efficiency. This is especially true at large-scale engineering sites such as mines and railways, where rail lifting operations are frequent and critical. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this utility model propose a lifting device that is simple in structure, easy to operate, and adaptable to various types of tracks, thereby reducing the physical burden on workers and increasing construction efficiency.

[0004] The lifting device of this utility model embodiment includes a first clamping arm, a second clamping arm, a support sleeve, a rotating shaft, a first flexible member, and a second flexible member. The first clamping arm includes a first traction part, a first connecting part, and a first clamping part connected in sequence, arranged from top to bottom. The angle between the first traction part and the first connecting part is an obtuse angle, and the angle between the first clamping part and the first connecting part is an obtuse angle. The second clamping arm includes a second traction part, a second connecting part, and a second clamping part connected in sequence, arranged from top to bottom. The angle between the second traction part and the second connecting part is an obtuse angle, and the angle between the second clamping part and the second connecting part is an obtuse angle. The support sleeve is fixedly connected to the first connecting part, and the rotating shaft is fixedly connected to the second connecting part. At least a portion of the rotating shaft is located inside the support sleeve and rotatably engages with the support sleeve to allow the first clamping arm and the second clamping arm to be rotatably connected. The first end of the first flexible member is connected to the first traction part, and the first end of the second flexible member is connected to the second traction part.

[0005] The lifting device of this utility model has a simple structure that is easy to process and manufacture. It clamps the track by simultaneously pulling the first flexible member and the second flexible member to bring the first clamping part and the second clamping part closer to each other. It separates from the track by releasing one of the first flexible member and the second flexible member. It is easy to operate and adaptable to various types of tracks, reducing the physical burden on workers and increasing construction efficiency.

[0006] In some embodiments, the first clamping arm further includes a first anti-slip pad, the first anti-slip pad being connected to the first clamping portion and located between the first clamping portion and the second clamping portion; and / or,

[0007] The second clamping arm further includes a second anti-slip pad, which is connected to the second clamping part and is located between the second clamping part and the first clamping part.

[0008] In some embodiments, the first clamping arm further includes a first hook, the first hook being connected to the first traction portion, and the first end of the first flexible member being connected to the first traction portion via the first hook;

[0009] The second clamping arm also includes a second hook, which is connected to the second traction part, and the first end of the second flexible member is connected to the second traction part through the second hook.

[0010] In some embodiments, the first clamping arm further includes a first stop, the first stop being connected to the first clamping portion and located at the lower end of the first clamping portion, and the first stop being located between the first clamping portion and the second clamping portion;

[0011] The second clamping arm further includes a second stop, which is connected to the second clamping part and located at the lower end of the second clamping part, and the second stop is located between the second clamping part and the first clamping part.

[0012] In some embodiments, the first clamping arm further includes a first counterweight connected to the first traction portion, and the first counterweight is located on the side of the first traction portion away from the second traction portion; and / or,

[0013] The second clamping arm further includes a second counterweight, which is connected to the second traction unit and is located on the side of the second traction unit away from the first traction unit.

[0014] In some embodiments, the first flexible element includes at least one of a flexible steel rope, a flexible chain, and a flexible sling, and the second flexible element includes at least one of a flexible steel rope, a flexible chain, and a flexible sling.

[0015] In some embodiments, the angle between the first traction portion and the first connecting portion is not less than the angle between the first clamping portion and the first connecting portion, and the angle between the second traction portion and the second connecting portion is not less than the angle between the second clamping portion and the second connecting portion.

[0016] In some embodiments, the first traction portion, the first connecting portion, and the first clamping portion are integrally formed, and the second traction portion, the second connecting portion, and the second clamping portion are integrally formed.

[0017] The rail lifting device according to a second aspect of this utility model includes a car body, a support arm, a first driving member, a second driving member, and a lifting device. The support arm is connected to the car body, and its length direction is arranged along a first direction, which is orthogonal to the vertical direction. The support arm has multiple through slots that penetrate the support arm along the vertical direction and are spaced apart along the first direction. The first driving member is connected to the car body, and the second driving member is connected to the car body. The lifting device is a lifting device as described in any of the above embodiments, and there are multiple lifting devices, each corresponding to one of the multiple through slots. The first flexible member passes through the corresponding through slot, with its first end located below the through slot and its second end being drivenly connected to the first driving member. The second flexible member passes through the corresponding through slot, with its first end located below the through slot and its second end being drivenly connected to the second driving member.

[0018] The track lifting device of this utility model uses a first driving member and a second driving member to simultaneously pull a first flexible member and a second flexible member, thereby driving the first clamping part and the second clamping part to move closer to each other to clamp the track. Separation from the track is achieved by releasing one of the first flexible member and the second flexible member. It is easy to operate and adaptable to various types of tracks, reducing the physical burden on workers and increasing construction efficiency.

[0019] In some embodiments, there are multiple support arms, which are spaced apart along a second direction, which is orthogonal to the first direction and also orthogonal to the up and down direction. Attached Figure Description

[0020] Figure 1 This is an isometric view of the lifting device according to an embodiment of this utility model.

[0021] Figure 2 This is a front view of the lifting device according to an embodiment of the present utility model, wherein both the first clamping arm and the second clamping arm are in a clamping state.

[0022] Figure 3 This is a front view of the lifting device according to an embodiment of the present utility model, wherein both the first clamping arm and the second clamping arm are in a relaxed state.

[0023] Figure label:

[0024] First clamping arm 1; first traction part 11; first connecting part 12; first clamping part 13; first anti-slip pad 14; first hook 15; first stop block 16; first counterweight block 17;

[0025] Second clamping arm 2; second traction part 21; second connecting part 22; second clamping part 23; second anti-slip pad 24; second hook 25; second stop block 26; second counterweight block 27;

[0026] Support sleeve 3;

[0027] Shaft 4. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The following describes the lifting device and track lifting device of the present invention in conjunction with the accompanying drawings.

[0030] like Figures 1 to 3 As shown, the lifting device of this utility model embodiment includes a first clamping arm 1, a second clamping arm 2, a support sleeve 3, a rotating shaft 4, a first flexible component, and a second flexible component. Among them,

[0031] The first clamping arm 1 includes a first traction part 11, a first connecting part 12, and a first clamping part 13 connected in sequence. The first traction part 11, the first connecting part 12, and the first clamping part 13 are arranged in sequence from top to bottom. The angle between the first traction part 11 and the first connecting part 12 is an obtuse angle, and the angle between the first clamping part 13 and the first connecting part 12 is also an obtuse angle. This structure facilitates better adaptation to the shape of the track and increases the contact area with the track, thereby enabling the first clamping arm 1 to provide a more stable clamping force when clamping the track and reducing the risk of track detachment. The second clamping arm 2 includes a second traction part 21, a second connecting part 22, and a second clamping part 23 connected in sequence. The second traction part 21, the second connecting part 22, and the second clamping part 23 are arranged in sequence from top to bottom. The angle between the second traction part 21 and the second connecting part 22 is an obtuse angle, and the angle between the second clamping part 23 and the second connecting part 22 is also an obtuse angle. This structure facilitates better adaptation to the shape of the track and increases the contact area with the track, thereby enabling the second clamping arm 2 to provide a more stable clamping force when clamping the track, reducing the risk of the track falling off. The support sleeve 3 is fixedly connected to the first connecting part 12, and the rotating shaft 4 is fixedly connected to the second connecting part 22. At least a part of the rotating shaft 4 is located inside the support sleeve 3 and rotates with the support sleeve 3. A rotating pair is formed between the support sleeve 3 and the rotating shaft 4, so that the first clamping arm 1 and the second clamping arm 2 can rotate relative to each other about the axis of the rotating shaft 4, realizing the rotational connection of the first clamping arm 1 and the second clamping arm 2, thereby realizing the action of clamping and releasing the track. The first end of the first flexible member is connected to the first traction part 11, and the first end of the second flexible member is connected to the second traction part 21. By pulling the first flexible member and / or the second flexible member, the first clamping part 13 and the second clamping part 23 are brought closer to each other to achieve the clamping and separation of the track.

[0032] It should be noted that when the first and second flexible components are simultaneously relaxed, the first clamping arm 1 and the second clamping arm 2 remain slack under their own weight. In this state, the first clamping arm 1 and the second clamping arm 2 cannot clamp the track. Therefore, the lifting device can be separated from the track by relaxing the first and second flexible components. Conversely, when one of the first and second flexible components is pulled upwards while the other is relaxed, one of the first clamping arms 1 and the second clamping arm 2 remains slack under its own weight. In this state, the first clamping arm 1 and the second clamping arm 2 cannot clamp the track. Therefore, the lifting device can be separated from the track by relaxing the first and second flexible components. One method is to separate the lifting device from the track. When both the first and second flexible components are in an upward tensioned state, the first traction part 11 and the second traction part 21 approach each other under the tension of the first and second flexible components. At this time, the first clamping arm 1 and the second clamping arm 2 rotate relative to each other around the axis of the rotating shaft 4, so that the first clamping part 13 and the second clamping part 23 approach each other, thereby clamping the track with the first clamping arm 1 and the second clamping arm 2. Thus, by simultaneously pulling the first and second flexible components upward, the first clamping part 13 and the second clamping part 23 approach each other and clamp the track, thereby completing the lifting operation of the track.

[0033] In use, the lifting device is placed on the track to be lifted, with the first clamping part 13 and the second clamping part 23 positioned on either side of the track. Simultaneously, the first flexible member and the second flexible member are pulled upwards, causing the first traction part 11 and the second traction part 21 to move closer together, thereby bringing the first clamping part 13 and the second clamping part 23 closer together. This causes the first clamping arm 1 and the second clamping arm 2 to clamp the track. The lifting operation is completed by moving the lifting device to drive the track. After the track is placed in the designated position, one of the first flexible member and the second flexible member is loosened, keeping one of the first clamping arm 1 and the second clamping arm 2 in a slack state. This causes the lifting device to lose its clamping force on the guide rail. Then, the other of the first flexible member and the second flexible member is pulled upwards to separate the lifting device from the track.

[0034] The lifting device of this utility model has a simple structure that is easy to process and manufacture. It clamps the track by simultaneously pulling the first flexible member and the second flexible member to bring the first clamping part 13 and the second clamping part 23 closer to each other. It separates from the track by releasing one of the first flexible member and the second flexible member. It is easy to operate and adaptable to various types of tracks, reducing the physical burden on workers and increasing construction efficiency.

[0035] like Figures 1 to 3As shown, in some embodiments, the first clamping arm 1 further includes a first anti-slip pad 14, which is connected to the first clamping portion 13 and is located between the first clamping portion 13 and the second clamping portion 23; and / or, the second clamping arm 2 further includes a second anti-slip pad 24, which is connected to the second clamping portion 23 and is located between the second clamping portion 23 and the first clamping portion 13.

[0036] It should be noted that by providing anti-slip pads (first anti-slip pad 14, second anti-slip pad 24) on the first clamping part 13 and / or the second clamping part 23, the anti-slip pads are in close contact with the rail surface when the lifting device clamps the rail, which increases the friction between the clamping arms (first clamping arm 1, second clamping arm 2) and the rail, effectively reducing the risk of the rail slipping during the lifting process, thereby reducing the danger caused by the rail detaching from the lifting device, and further improving the safety of the lifting device.

[0037] The anti-slip mat can be made of materials with a high coefficient of friction, such as rubber or silicone, and can be fixed to the clamping parts (first clamping part 13 and second clamping part 23) by means of glue, bolts, etc., so as to facilitate the installation or replacement of the anti-slip mat.

[0038] like Figures 1 to 3 As shown, in some embodiments, the first clamping arm 1 further includes a first hook 15, which is connected to the first traction part 11, and the first end of the first flexible member is connected to the first traction part 11 through the first hook 15; the second clamping arm 2 further includes a second hook 25, which is connected to the second traction part 21, and the first end of the second flexible member is connected to the second traction part 21 through the second hook 25.

[0039] It should be noted that the hooks (first hook 15, second hook 25) can be fixed or detachably connected to the traction unit (first traction unit 11, second traction unit 21) by welding, bolt connection or other methods, so that the flexible parts (first flexible parts, second flexible parts) and the clamping arm can be connected more conveniently and quickly, which greatly improves the work efficiency.

[0040] like Figures 1 to 3 As shown, in some embodiments, the first clamping arm 1 further includes a first stop 16, which is connected to the first clamping part 13 and located at the lower end of the first clamping part 13, and the first stop 16 is located between the first clamping part 13 and the second clamping part 23; the second clamping arm 2 further includes a second stop 26, which is connected to the second clamping part 23 and located at the lower end of the second clamping part 23, and the second stop 26 is located between the second clamping part 23 and the first clamping part 13.

[0041] It should be noted that the stops (first stop 16, second stop 26) can be made of materials such as metal or hard rubber blocks. Their shape can be designed according to actual needs and fixed to the clamping part by welding, bolting, or other methods, or they can be integrally formed with the clamping part. When the lifting device clamps the rail, the stops provide auxiliary support to the rail, which can significantly reduce the risk of the rail coming off during lifting operations and further improve the safety of the lifting device.

[0042] like Figures 1 to 3 As shown, in some embodiments, the first clamping arm 1 further includes a first counterweight 17, which is connected to the first traction part 11 and is located on the side of the first traction part 11 away from the second traction part 21; and / or, the second clamping arm 2 further includes a second counterweight 27, which is connected to the second traction part 21 and is located on the side of the second traction part 21 away from the first traction part 11.

[0043] It should be noted that the counterweights (first counterweight 17 and second counterweight 27) are fixedly or detachably connected to the traction unit by welding, bolting, or other means. The counterweights are used to increase the gravity of the traction unit. When one flexible connector is loosened and the other flexible connector is pulled to separate the lifting device from the track, the counterweights can increase the gravity of the untractioned traction unit, ensuring that the traction unit smoothly rotates away from the traction unit under its own weight and the gravity of the counterweights, thereby smoothly releasing the clamping force on the track.

[0044] In some embodiments, the first flexible element includes at least one of a flexible steel rope, a flexible chain, and a flexible sling, and the second flexible element includes at least one of a flexible steel rope, a flexible chain, and a flexible sling.

[0045] Understandably, different types of flexible components can be selected to better complete lifting operations depending on the different usage environments and actual needs.

[0046] In some embodiments, the angle between the first traction portion 11 and the first connecting portion 12 is not less than the angle between the first clamping portion 13 and the first connecting portion 12, and the angle between the second traction portion 21 and the second connecting portion 22 is not less than the angle between the second clamping portion 23 and the second connecting portion 22.

[0047] It should be noted that this angled design allows the clamping part to better fit the track surface when the clamping arm is clamping the track, ensuring that the clamping part can smoothly clamp the track, thus improving the stability and reliability of the clamping.

[0048] In some embodiments, the first traction portion 11, the first connecting portion 12, and the first clamping portion 13 are integrally formed, and the second traction portion 21, the second connecting portion 22, and the second clamping portion 23 are integrally formed.

[0049] It should be noted that the traction part, connecting part and clamping part of the clamping arm can be formed by stamping from a single thick steel plate. The one-piece molding design gives the clamping arm high strength and rigidity, and it can withstand large lifting loads. The thick steel plate can be customized or made from scraps generated from the project.

[0050] The rail lifting device according to a second aspect embodiment of this utility model includes a car body, a support arm, a first driving component, a second driving component, and a lifting device. Among them,

[0051] The vehicle body serves as the load-bearing platform for the entire rail lifting device. It can utilize a metal frame structure and be equipped with a traveling mechanism (such as wheels or tracks) for flexible movement on the construction site. A support arm is connected to the vehicle body, with its length direction aligned with a first direction, orthogonal to the vertical direction. The support arm has multiple through slots that penetrate the support arm vertically and are spaced apart along the first direction. The support arm supports the lifting device and the rail. A first driving component (e.g., a winch, a zigzag reel, etc.) is connected to the vehicle body. A second driving component (e.g., a winch, a zigzag reel, etc.) is also connected to the vehicle body. The lifting device is a lifting device according to any of the above embodiments, with multiple lifting devices corresponding one-to-one with multiple through slots. A first flexible member passes through the corresponding through slot, with its first end located below the slot and its second end connected to the first driving component. A second flexible member passes through the corresponding through slot, with its first end located below the slot and its second end connected to the second driving component.

[0052] In use, workers can place multiple lifting devices on the track to be lifted, and position the first clamping part 13 and the second clamping part 23 of the lifting devices on both sides of the track. Simultaneously, the first drive unit and the second drive unit are activated (rotated forward) to pull the first flexible component and the second flexible component upwards. The first traction part 11 and the second traction part 21 move closer together, thereby causing the first clamping part 13 and the second clamping part 23 to move closer together, so that the first clamping arm 1 and the second clamping arm 2 clamp the track. This completes the clamping operation of multiple lifting devices on the track. The first drive unit and the second drive unit are then activated again to continue pulling the first flexible component and the second flexible component upwards simultaneously. The lifting device moves the track upwards to complete the lifting operation. After the track is moved to the designated position, the first and second drive components are simultaneously reversed to relax the first and second flexible components downwards. During the downward movement of the lifting device, the first and second flexible components remain taut, thus maintaining the clamping of the track until the track contacts the ground and both the first and second flexible components are relaxed. Then, one of the first and second drive components is activated (forward rotation) (or the operator manually pulls one of the first or second flexible components) to separate the lifting device from the track.

[0053] The track lifting device of this utility model uses a first driving member and a second driving member to simultaneously pull a first flexible member and a second flexible member, thereby driving the first clamping part 13 and the second clamping part 23 to move closer to each other to clamp the track. Separation from the track is achieved by releasing one of the first flexible member and the second flexible member. It is easy to operate and adaptable to various types of tracks, reducing the physical burden on workers and increasing construction efficiency.

[0054] In some embodiments, there are multiple support arms, which are spaced apart along a second direction, which is orthogonal to the first direction and also orthogonal to the up and down direction.

[0055] Understandably, the setup of multiple support arms allows for the simultaneous lifting of multiple rails, thereby improving the efficiency of lifting operations.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A lifting device, characterized in that, include: The first clamping arm includes a first traction part, a first connecting part, and a first clamping part connected in sequence. The first traction part, the first connecting part, and the first clamping part are arranged in sequence from top to bottom. The angle between the first traction part and the first connecting part is an obtuse angle, and the angle between the first clamping part and the first connecting part is an obtuse angle. The second clamping arm includes a second traction part, a second connecting part, and a second clamping part connected in sequence. The second traction part, the second connecting part, and the second clamping part are arranged in sequence from top to bottom. The angle between the second traction part and the second connecting part is an obtuse angle, and the angle between the second clamping part and the second connecting part is an obtuse angle. A support sleeve, which is fixedly connected to the first connecting part; A rotating shaft is fixedly connected to the second connecting part, and at least a portion of the rotating shaft is located inside the support sleeve and rotatably engages with the support sleeve, so that the first clamping arm and the second clamping arm are rotatably connected. A first flexible member, the first end of which is connected to the first traction part; The second flexible member has its first end connected to the second traction part.

2. The lifting device according to claim 1, characterized in that, The first clamping arm further includes a first anti-slip pad, which is connected to the first clamping portion and located between the first clamping portion and the second clamping portion; and / or, The second clamping arm further includes a second anti-slip pad, which is connected to the second clamping part and is located between the second clamping part and the first clamping part.

3. The lifting device according to claim 1, characterized in that, The first clamping arm further includes a first hook, which is connected to the first traction part, and the first end of the first flexible member is connected to the first traction part through the first hook; The second clamping arm also includes a second hook, which is connected to the second traction part, and the first end of the second flexible member is connected to the second traction part through the second hook.

4. The lifting device according to claim 1, characterized in that, The first clamping arm further includes a first stop, which is connected to the first clamping part and located at the lower end of the first clamping part, and the first stop is located between the first clamping part and the second clamping part; The second clamping arm further includes a second stop, which is connected to the second clamping part and located at the lower end of the second clamping part, and the second stop is located between the second clamping part and the first clamping part.

5. The lifting device according to claim 1, characterized in that, The first clamping arm further includes a first counterweight, which is connected to the first traction unit and located on the side of the first traction unit away from the second traction unit; and / or, The second clamping arm further includes a second counterweight, which is connected to the second traction unit and is located on the side of the second traction unit away from the first traction unit.

6. The lifting device according to any one of claims 1-5, characterized in that, The first flexible component includes at least one of a flexible steel rope, a flexible chain, and a flexible sling, and the second flexible component includes at least one of a flexible steel rope, a flexible chain, and a flexible sling.

7. The lifting device according to any one of claims 1-5, characterized in that, The angle between the first traction part and the first connecting part is not less than the angle between the first clamping part and the first connecting part, and the angle between the second traction part and the second connecting part is not less than the angle between the second clamping part and the second connecting part.

8. The lifting device according to any one of claims 1-5, characterized in that, The first traction part, the first connecting part, and the first clamping part are integrally formed, and the second traction part, the second connecting part, and the second clamping part are integrally formed.

9. A track-mounted lifting device, characterized in that, include: Vehicle body, A support arm is connected to the vehicle body. The length direction of the support arm is set along a first direction, which is orthogonal to the vertical direction. The support arm is provided with a plurality of through slots that penetrate the support arm along the vertical direction. The plurality of through slots are spaced apart along the first direction. A first driving component, the first driving component being connected to the vehicle body; A second drive unit is connected to the vehicle body; The lifting device is any one of claims 1-8, and there are multiple lifting devices, each corresponding to one of the multiple through slots; the first flexible member passes through the corresponding through slot, and its first end is located below the through slot, and its second end is connected to the first driving member; the second flexible member passes through the corresponding through slot, and its first end is located below the through slot, and its second end is connected to the second driving member.

10. The track lifting device according to claim 9, characterized in that, There are multiple support arms, which are spaced apart along a second direction. The second direction is orthogonal to the first direction and also orthogonal to the up and down direction.

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