Lifting and limiting tool for ballastless track bed slab

Abstract

The utility model discloses a lifting limit tool for a ballastless track bed slab, which comprises a plurality of lifting limit components, each lifting limit component comprises a longitudinal limit arm and a transverse limit arm, the longitudinal limit arm is fixedly connected with one end of the transverse limit arm, and the longitudinal limit arm and the transverse limit arm are combined to form a T-shaped structure. The longitudinal limiting arm is provided with a plurality of lifting limiting rods on the two sides of the position where the longitudinal limiting arm is connected with the transverse limiting arm, tensioning hooks are arranged at the two ends of the longitudinal limiting arm, and a tensioning hook is arranged at the end, away from the longitudinal limiting arm, of the transverse limiting arm; the tensioning hook is connected with a tensioning assembly. Every two adjacent lifting limiting assemblies are further connected with an extension limiting assembly. In the lifting process of the roadbed slab, the lifting limiting rods can limit the roadbed slab, the displacement condition of the roadbed slab in the horizontal direction is reduced, and the displacement of the roadbed slab in the horizontal direction in the lifting process is always within a reasonable range.

Description

Technical Field

[0001] This utility model belongs to the field of track construction equipment, specifically relating to a lifting and limiting tooling for ballastless track slabs. Background Technology

[0002] Currently, high-speed rail and bullet train tracks mainly use ballastless track. However, after prolonged operation, the geotextile isolation layer between the track slab and the base plate may become damaged, affecting the stability and safety of both the ballastless track and train operation. This necessitates lifting and jacking up the track slab. Therefore, regular maintenance of the geotextile isolation layer between the track slab and the base plate is required, with timely replacement of any parts that do not meet usage requirements to ensure safe and stable train operation.

[0003] During maintenance and construction, the first step is to lift and detach the track slab from the base plate. Flexible cables are typically used to suspend the track slab during this process. However, in practice, uncontrollable factors such as road vibration and wind can cause the track slab to shift horizontally beyond its normal range during lifting. This displacement can negatively impact the lifting operation, reduce construction efficiency, and even threaten the safety of construction workers, posing a risk to the entire project. Utility Model Content

[0004] The purpose of this invention is to provide a lifting and limiting fixture for ballastless track slabs, in order to solve the problems of reduced construction efficiency and threats to the personal safety of construction workers caused by displacement outside the reasonable range in the horizontal direction during the lifting of track slabs.

[0005] To solve the above-mentioned technical problems, this utility model provides a lifting and limiting fixture for ballastless track bed slabs, including several lifting and limiting components. Each lifting and limiting component includes a longitudinal limiting arm and a transverse limiting arm. One end of the longitudinal limiting arm and the transverse limiting arm are fixedly connected, and the longitudinal limiting arm and the transverse limiting arm are combined to form a T-shaped structure.

[0006] The longitudinal limiting arm has several lifting limiting rods on both sides at the connection point between the longitudinal limiting arm and the transverse limiting arm, and the transverse limiting arm has several lifting limiting rods. The lifting limiting rods are used to limit the track bed slab that is being lifted.

[0007] The longitudinal limiting arm is equipped with tension hooks at both ends, and the transverse limiting arm is also equipped with a tension hook at the end away from the longitudinal limiting arm; the tension hooks are connected to tensioning components, which are used to tension the two connected lifting limiting components.

[0008] The two adjacent lifting limit components are also connected to an extension limit component, which provides rigid support for the adjacent lifting limit components.

[0009] Furthermore, the lifting limit rod is fixedly connected to the longitudinal limit arm, and the lifting limit rod is fixedly connected to the transverse limit arm. The lifting limit rod is perpendicular to the plane containing the transverse limit arm and the longitudinal limit arm, and all the lifting limit rods face the same direction.

[0010] Furthermore, the lifting limit rod is rotatably connected to the longitudinal limit arm and the lateral limit arm. When the lifting limit rod rotates to a position perpendicular to the plane containing the lateral and longitudinal limit arms, the lifting limit rod is engaged with the longitudinal or lateral limit arm via a limit rod pin.

[0011] Furthermore, the extension limiting component is provided with several through holes for the extension rod pin to pass through, and the extension limiting component is connected to the lifting limiting component through the extension rod pin.

[0012] Furthermore, an auxiliary support is provided on the side of the lifting limit rod away from the track bed slab, and the auxiliary support is rotatably connected to the lifting limit rod.

[0013] Furthermore, a roller is provided on the side of the lifting limit rod closest to the track bed slab.

[0014] Furthermore, the lifting limit assembly includes several height adjustment feet, which are threadedly connected to the side of the longitudinal limit arm and / or the lateral limit arm closest to the ground.

[0015] The beneficial effects of the lifting and limiting fixture for ballastless track slabs provided by this utility model are as follows: Due to the design of several lifting and limiting components, including longitudinal limiting arms, transverse limiting arms, and several lifting limiting rods, these lifting limiting rods can limit the track slab during the lifting process, reducing horizontal displacement and ensuring that the horizontal displacement of the track slab remains within a reasonable range during lifting. This solves the problems of reduced construction efficiency and threats to the personal safety of construction workers caused by horizontal displacement outside the reasonable range during track slab lifting. Attached Figure Description

[0016] Figure 1 A side view schematic diagram of a lifting and limiting fixture used for ballastless track slabs;

[0017] Figure 2 This is a top view diagram showing the case without the extension limit component.

[0018] Figure 3 For the appendix Figure 2 Enlarged diagram of point A in the middle. Detailed Implementation

[0019] To better understand the purpose, structure, and function of this utility model, the following description is in conjunction with the appendix. Figures 1 to 3 The present invention provides a more detailed description of a lifting and limiting fixture for ballastless track slabs.

[0020] like Figures 1 to 3 As shown, a lifting and limiting fixture for ballastless track slabs according to an embodiment of this utility model includes several lifting and limiting components. Each lifting and limiting component includes a longitudinal limiting arm 110 and a transverse limiting arm 120, with one end of the longitudinal limiting arm 110 and the transverse limiting arm 120 fixedly connected. Here, the direction parallel to the track axis on the track slab 500 is defined as longitudinal, and the direction perpendicular to the track axis in the horizontal direction is defined as transverse. The longitudinal limiting arm 110 and the transverse limiting arm 120 combine to form a T-shaped structure. This structure can limit the track slab in both longitudinal and transverse directions, ensuring that it does not experience excessive displacement or swaying during lifting. An extension limiting component 200 is provided with several through holes for extension rod pins 210 to pass through. The extension limiting component 200 is connected to the lifting limiting component via the extension rod pins 210. The materials of the longitudinal limiting arm 110 and the transverse limiting arm 120 can be selected according to actual needs, such as high-strength steel, to ensure that they have sufficient strength and rigidity to withstand the impact and extrusion forces during the lifting of the track bed slab. The connection between the two can be achieved using common mechanical connection methods such as welding or bolting, ensuring the strength and reliability of the connection.

[0021] The longitudinal limiting arm 110 has several lifting limiting rods 130 on each side of the connection point between the longitudinal limiting arm 110 and the transverse limiting arm 120. The transverse limiting arm 120 also has several lifting limiting rods 130. These lifting limiting rods 130 are used to limit the height of the track slab 500 during lifting. In practice, the height of the lifting limiting rods 130 is usually around 1 meter. The longitudinal limiting arm 110 has tension hooks 140 at both ends, and the transverse limiting arm 120 also has a tension hook 140 at the end furthest from the longitudinal limiting arm 110. The tension hooks 140 are connected to tensioning components 150, which are used to tension the two connected lifting limiting components. Two adjacent lifting limiting components are also connected to extension limiting components 200, which provide rigid support for the adjacent lifting limiting components. An auxiliary support 400 is provided on the side of the lifting limit rod 130 away from the track slab 500, and the auxiliary support 400 is rotatably connected to the lifting limit rod 130. The auxiliary support 400 can support the ground. During the lifting of the track slab 500, it will collide with and squeeze the lifting limit rod 130. Therefore, the auxiliary support 400 can provide support for the lifting limit rod 130 when it is collided or squeezed, making the lifting limit fixture for the ballastless track slab more stable in limiting the track slab 500. The main function of the lifting limit rod 130 is to limit the track slab 500 being lifted, preventing it from moving beyond a reasonable range in the horizontal direction during the lifting process. The tensioning assembly 150 can use common tensioning components such as wire ropes and chains, and is used in conjunction with corresponding fastening devices such as bolts and shackles to achieve effective tensioning of the lifting limit assembly. In practical applications, the appropriate specifications and strength of the tensioning assembly 150 are selected based on the specific requirements of the lifting operation and factors such as the weight and size of the track slab. For example, the tensioning assembly 150 can use steel wire and a double-hook steel wire rope tensioner. This ensures that multiple lifting limit assemblies remain tightly connected during the lifting process, forming a stable overall structure.

[0022] In some embodiments, the lifting limit rod 130 is fixedly connected to the longitudinal limit arm 110, and the lifting limit rod 130 is fixedly connected to the transverse limit arm 120. The plane containing the lifting limit rod 130, the transverse limit arm 120, and the longitudinal limit arm 110 is perpendicular to each other, and all the lifting limit rods 130 face the same direction. This fixed installation method is suitable for situations where the shape and size of the track bed slab are relatively fixed and the lifting path is relatively regular, and can provide a stable limiting effect.

[0023] In use, first insert the four lateral limiting arms 120 into the gaps between the four corners of the track bed slab 500 to be lifted and the adjacent track bed slab 500. One of the two longitudinal limiting arms 110 abuts against the adjacent track bed slab 500, and this longitudinal limiting arm 110 also provides support for subsequent limiting. Two adjacent lifting limiting components in the lateral direction have their lateral limiting arms 120 facing each other. Then, connect the tensioning component 150 to these two components, hooking the steel wires in the tensioning component 150 onto the tensioning hooks 140 of the lateral limiting arms 120. Adjust the tensioning component 150 to tighten these two lifting limiting components in the lateral direction. For greater stability during lifting, connect the extension limiting component 200 to the lateral limiting arms 120 of the two lifting limiting components, for example, through an extension rod pin 210. If the gap is narrow, the tensioning component 150 can be removed after the extension limiting component 200 is installed.

[0024] Similarly, adjust the two adjacent longitudinal limiting arms 110 in the longitudinal direction. After tightening the two adjacent longitudinal limiting arms 110 by adjusting the tensioning component 150, install the extension limiting component 200 so that the two adjacent longitudinal limiting arms 110 can have more stable support.

[0025] During the lifting process, the sides of the track bed 500 will collide or slide with the lifting limit rod 130. However, due to the stable support of the longitudinal limit arm 110 and the transverse limit arm 120 on the ground, even if the track bed 500 collides and is squeezed by the lifting limit rod 130, the track bed 500 will always move within a reasonable range.

[0026] In some embodiments, the lifting limit rod 130 is rotatably connected to the longitudinal limit arm 110 and the transverse limit arm 120. When the lifting limit rod 130 rotates to a position perpendicular to the plane containing the transverse limit arm 120 and the longitudinal limit arm 110, the lifting limit rod 130 is engaged with either the longitudinal limit arm 110 or the transverse limit arm 120 via a limit rod pin 131. This rotatable connection allows the lifting limit rod 130 to be retracted when not in use, reducing space occupation and facilitating switching between different sizes of track slabs. Several rotatably connected lifting limit rods can also be provided on the extension limit assembly 200 to further improve the stability of the track slab 500 during the lifting phase.

[0027] In this invention, a roller is provided on the side of the lifting limit rod 130 near the track bed 500. The roller reduces the friction between the lifting limit rod 130 and the track bed 500, reducing scratches or damage to the side surface of the track bed 500 during the lifting process, and also allows the track bed 500 to move more smoothly within the limit range.

[0028] The lifting and limiting assembly includes several height-adjustable feet 300, which are threadedly connected to the ground-facing side of the longitudinal limiting arm 110 and / or the transverse limiting arm 120. The main function of the height-adjustable feet 300 is to adjust the overall height of the lifting and limiting assembly to adapt to different site conditions. By rotating the height-adjustable feet 300, the height of the longitudinal limiting arm 110 and the transverse limiting arm 120 from the ground can be precisely adjusted, ensuring a suitable clearance and working position between the lifting and limiting assembly and the track bed slab. This height adjustment method is simple to operate and allows for quick fine-tuning of the lifting and limiting assembly's height, improving construction flexibility and efficiency.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A lifting and limiting fixture for ballastless track slabs, characterized in that, It includes several lifting and limiting components, the lifting and limiting components include a longitudinal limiting arm (110) and a transverse limiting arm (120), one end of the longitudinal limiting arm (110) and the transverse limiting arm (120) are fixedly connected, and the longitudinal limiting arm (110) and the transverse limiting arm (120) are combined to form a T-shaped structure. The longitudinal limiting arm (110) has several lifting limiting rods (130) on each side of the position where the longitudinal limiting arm (110) and the transverse limiting arm (120) are connected. The transverse limiting arm (120) has several lifting limiting rods (130). The lifting limiting rods (130) are used to limit the track bed slab (500) that is being lifted. The longitudinal limiting arm (110) is provided with tension hooks (140) at both ends, and the transverse limiting arm (120) is also provided with tension hooks (140) at the end away from the longitudinal limiting arm (110); the tension hooks (140) are connected to tensioning components (150), and the tensioning components (150) are used to tension the two connected lifting limiting components; The two adjacent lifting limit components are also connected to an extension limit component (200), which provides rigid support for the adjacent lifting limit components.

2. The lifting and limiting fixture for ballastless track slabs according to claim 1, characterized in that, The lifting limit rod (130) is fixedly connected to the longitudinal limit arm (110), and the lifting limit rod (130) is fixedly connected to the transverse limit arm (120). The lifting limit rod (130) is perpendicular to the plane containing the transverse limit arm (120) and the longitudinal limit arm (110), and all the lifting limit rods (130) have the same orientation.

3. The lifting and limiting fixture for ballastless track slabs according to claim 1, characterized in that, The lifting limit rod (130) is rotatably connected to the longitudinal limit arm (110), and the lifting limit rod (130) is rotatably connected to the transverse limit arm (120). When the lifting limit rod (130) rotates to a position perpendicular to the plane containing the transverse limit arm (120) and the longitudinal limit arm (110), the lifting limit rod (130) is connected to the longitudinal limit arm (110) or the transverse limit arm (120) through the limit rod pin (131).

4. The lifting and limiting fixture for ballastless track slabs according to claim 1, characterized in that, The extension limiting component (200) is provided with a plurality of through holes, the through holes being used to pass through the extension rod pin (210), and the extension limiting component (200) is connected to the lifting limiting component through the extension rod pin (210).

5. The lifting and limiting fixture for ballastless track slabs according to claim 4, characterized in that, An auxiliary support (400) is provided on the side of the lifting limit rod (130) away from the track bed slab (500), and the auxiliary support (400) is rotatably connected to the lifting limit rod (130).

6. The lifting and limiting fixture for ballastless track slabs according to claim 5, characterized in that, The lifting limit rod (130) is provided with a roller on the side near the track bed slab (500).

7. The lifting and limiting fixture for ballastless track slabs according to claim 1, characterized in that, The lifting limit assembly includes several height adjustment feet (300), which are threadedly connected to the side of the longitudinal limit arm (110) and / or the lateral limit arm (120) near the ground.

Images