A subway track bed expansion joint construction clamping tool

Abstract

The application discloses a subway track bed expansion joint construction clamping tool, which comprises a hanging bracket part, a clamping plate part, a fixing clamp, a fastening assembly, a foam expansion joint plate, a first pressing plate and guide rails, the bottom of each of the two guide rails is provided with the hanging bracket part, the left and right hanging bracket parts are fixedly provided with two clamping plate parts which are arranged in parallel through the fastening assembly, the foam expansion joint plate is fixed between the two clamping plate parts through the fixing clamp, and the first pressing plate is located at the top of the foam expansion joint plate. The two clamping plate parts arranged in parallel at the bottom of the guide rails are used for transversely positioning the foam expansion joint plate, and the first pressing plate at the top of the foam expansion joint plate is used for longitudinally limiting, so that the fixing reliability of the foam expansion joint plate is effectively ensured, the expansion joint precision and quality are improved, the labor intensity of workers is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of railway construction technology, and in particular to a clamping tool for construction of expansion joints in subway track beds. Background Technology

[0002] In recent years, with the development of urbanization, urban traffic pressure has been increasing. To meet people's travel needs and effectively alleviate urban traffic pressure, more and more subways are being built in large and medium-sized cities. With the continuous optimization and improvement of subway design and construction schemes, different cities have adopted various structural designs and construction techniques based on their own geological features, underground structure layouts, and other characteristics to meet the needs of modern urban rail transit. Currently, in the overall track bed construction of domestic rail engineering, the sleepers and rails are first installed together using track panel brackets and installation bolts. After multiple adjustments to ensure that the sleepers and rails meet construction requirements, formwork is installed and foam expansion joint boards are placed at specified intervals. Because the foam expansion joint boards are made of relatively soft foam material, they need to be fixed before pouring the track bed concrete. However, the expansion joints are located under the rails and run through the entire subway track bed, making them inconvenient to clamp and remove from the formwork. Traditional methods often use small pieces of plywood or plastic to clamp the foam expansion joint board. This clamping method results in poor fixation reliability of the foam expansion joint board, which is prone to twisting and deformation during construction. After construction, the expansion joint has low precision and poor quality, requiring manual secondary repair and reshaping.

[0003] Therefore, developing a construction clamping fixture for subway track expansion joints that provides high reliability in fixing foam expansion joint boards and improves the accuracy of expansion joints is a technical problem that researchers in this field will continue to solve. Summary of the Invention

[0004] The purpose of this invention is to provide a clamping fixture for the construction of expansion joints in subway tracks, which effectively ensures the fixing reliability of foam expansion joint boards, thereby improving the precision and quality of expansion joints, reducing the labor intensity of workers, and increasing work efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides a clamping fixture for construction of subway track expansion joints, including a hanger component 1, a clamping plate component 2, a fixing clamp 3, a fastening assembly 4, a foam expansion joint board 5, a first pressure plate 6, and guide rails 7. The hanger component 1 is installed at the bottom of both guide rails 7. Two parallel clamping plate components 2 are fixed between the left and right hanger components 1 by the fastening assembly 4. The foam expansion joint board 5 is fixed between the two clamping plate components 2 by the fixing clamp 3. The first pressure plate 6 is located on the top of the foam expansion joint board 5.

[0006] Preferably, the hanger component 1 includes a hanger body 11, a second pressure plate 12, a clamping nut 13, and a joint bolt 14. The hanger body 11 includes a hanger main body 111, which is located at the bottom of the guide rail 7. A lug 112 is fixedly provided at the lower part of one end of the hanger main body 111 located outside the guide rail 7, and a fixed pressure plate 113 is fixedly provided at the upper part of the other end of the hanger main body 111. The joint bolt 14 is provided on the lug 112. The second pressure plate 12 is movably located on the hanger main body 111 and sleeved on the joint bolt 14. The clamping nut 13 is located on the second pressure plate 12 and is used to fix the hanger body 11 to the bottom of the guide rail 7.

[0007] Preferably, the lug 112 and the pressure plate 113 are both welded to the hanger body 111.

[0008] Preferably, the lug 112 is provided with a pivot 15, and the joint bolt 14 is hinged to the lug 112 through the pivot 15.

[0009] Preferably, the clamping plate component 2 includes a clamping plate body 21 and a pin 22. The clamping plate body 21 includes a steel plate 211, a frame body 212 and a base 213. The steel plate 211 is fixedly disposed on the inner side of the frame body 212, and the base 213 is fixedly disposed on the outer side of the frame body 212. A lead screw 24 is provided on the base 213, and a lead screw nut 23 is sleeved on the lead screw 24. One end of the pin 22 is inserted into the lead screw nut 23, and the other end of the pin 22 is inserted into the pressure plate 6.

[0010] Preferably, the top of the skeleton body 212 is provided with a handle.

[0011] Preferably, the lead screw 24 is hinged to the base 213.

[0012] Preferably, the steel plate 211 and the base 213 are both welded to both sides of the frame body 212.

[0013] Preferably, the fastening component 4 is a screw and nut assembly.

[0014] Compared with existing technologies, this invention uses two parallel clamping plates at the bottom of the guide rail to laterally position the foam expansion joint board, while using the first pressure plate at the top of the foam expansion joint for longitudinal positioning. This effectively ensures the fixing reliability of the foam expansion joint board, thereby improving the accuracy and quality of the expansion joint, reducing the labor intensity of workers, and increasing work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the construction clamping fixture for subway track expansion joints according to the present invention.

[0016] Figure 2 yes Figure 1 Top view,

[0017] Figure 3 is Figure 1 an enlarged view of part C of

[0018] Figure 4 is Figure 1 a sectional view taken along A-A of

[0019] Figure 5 is Figure 2 a sectional view taken along B-B of

[0020] In the figure: 1. Hanger component, 11. Hanger body, 111. Hanger main body, 112. Ear, 113. Fixed pressure plate, 12. Second pressure plate, 13. Compression nut, 14. Joint bolt, 15. Rotating shaft, 2. Splint component, 21. Splint body, 211. Steel plate, 212. Skeleton body, 213. Base, 214. Handle, 22. Pin, 23. Nut, 24. Screw rod, 3. Fixed clamp, 4. Fastening component, 5. Foam expansion joint board, 6. First pressure plate, 7. Guide rail. Specific embodiments

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] It should be noted that in this embodiment, taking Figure 1 as an example, the direction perpendicular to the paper surface upward is defined as up, and the direction perpendicular to the paper surface downward is defined as down.

[0023] As shown in Figure 1 , Figure 2 , Figure 4 , a clamping tool for subway track bed expansion joint construction includes a hanger component 1, a splint component 2, a fixed clamp 3, a fastening component 4, a foam expansion joint board 5, a first pressure plate 6 and a guide rail 7. The bottom of each of the two guide rails 7 is provided with a hanger component 1. Two parallel splint components 2 are fixedly arranged between the left and right hanger components 1 through the fastening component 4. The foam expansion joint board 5 is fixed between the two splint components 2 by the fixed clamp 3. The first pressure plate 6 is located on the top of the foam expansion joint board 5.

[0024] In this embodiment, firstly, two sets of hanger components 1 are installed at the bottom of two guide rails 7 at the location where the expansion joint is required to be constructed. Then, the clamping plate component 2 is fixed between the two sets of hanger components 1 by the fastening assembly 4. At the same time, the fixing clamp 3 is used to make the two clamping plate components 2 laterally position and clamp the foam expansion joint board 5. Then, the first pressure plate 6 is moved up and down to make it longitudinally limit and press down on the foam expansion joint board 5. The clamping plate component 2 can prevent the foam expansion joint board 5 from twisting and deforming when pouring concrete, while the first pressure plate 6 can prevent the foam expansion joint board 5 from floating when pouring concrete, thereby ensuring the reliability of the fixation of the foam expansion joint board 5, improving the accuracy and quality of the expansion joint, reducing the labor intensity of workers, and improving work efficiency.

[0025] like Figure 3 As shown, the hanger component 1 includes a hanger body 11, a second pressure plate 12, a clamping nut 13, and a joint bolt 14. The hanger body 11 includes a hanger main body 111, which is located at the bottom of the guide rail 7. A lug 112 is fixedly provided at the lower part of one end of the hanger main body 111 located outside the guide rail 7, and a fixed pressure plate 113 is fixedly provided at the upper part of the other end of the hanger main body 111. The joint bolt 14 is provided on the lug 112. The second pressure plate 12 is movably located on the hanger main body 111 and sleeved on the joint bolt 14. The clamping nut 13 is located on the second pressure plate 12 and is used to fix the hanger body 11 to the bottom of the guide rail 7.

[0026] like Figure 3 As shown, the lug 112 and the pressure plate 113 are both welded to the hanger body 111.

[0027] like Figure 3 As shown, the lug 112 is provided with a rotating shaft 15, and the joint bolt 14 is hinged to the lug 112 through the rotating shaft 15.

[0028] In this embodiment, the pressure plate 113 is U-shaped. During installation, the U-shaped opening of the pressure plate 113 is aligned with the guide rail 7 to longitudinally limit and clamp the guide rail 7. First, the hanger body 111 is fastened to the bottom of the guide rail 7 by the pressure plate 113. Then, the joint bolt 14 is rotated and the clamping nut 13 is tightened so that the second pressure plate 12 presses down on the guide rail 7, effectively ensuring the fixed firmness between the hanger component 1 and the guide rail 7.

[0029] In this embodiment, the lug 112 and the pressure plate 113 are fixed to the hanger body 111 by welding, which further ensures the reliability of the connection between the components. The lug 112 is hinged to the joint bolt 14 through the pivot 15, which effectively improves the installation efficiency of the operator.

[0030] like Figure 5As shown, the clamping plate component 2 includes a clamping plate body 21 and a pin 22. The clamping plate body 21 includes a steel plate 211, a frame body 212 and a base 213. The steel plate 211 is fixedly disposed on the inner side of the frame body 212, and the base 213 is fixedly disposed on the outer side of the frame body 212. A lead screw 24 is provided on the base 213, and a lead screw nut 23 is sleeved on the lead screw 24. One end of the pin 22 is inserted into the lead screw nut 23, and the other end of the pin 22 is inserted into the pressure plate 6.

[0031] like Figure 5 As shown, the top of the skeleton body 212 is provided with a handle 214.

[0032] like Figure 5 As shown, the lead screw 24 is hinged to the base 213.

[0033] like Figure 5 As shown, the steel plate 211 and the base 213 are both welded to both sides of the frame body 212.

[0034] In this embodiment, the two clamping plates 21 are positioned on opposite sides as inner sides. The foam expansion joint plate 5 is laterally positioned and clamped by the steel plate 211 set on the inner side of the clamping plate 21, which further ensures that the foam expansion joint plate 5 will not be twisted or deformed during construction. At the same time, the pressure plate 6 and the clamping plate component 2 are fixedly connected by the screw rod 24 and the screw nut 23. The relative position between the pressure plate 6 and the foam expansion joint plate 5 can be adjusted by rotating the screw rod 24, which in turn causes the screw nut 23 to move the pressure plate 6 up and down. This achieves longitudinal limiting and pressing of the pressure plate 6 on the foam expansion joint plate 5, which greatly facilitates the installation of the clamping fixture by the operator. If the pressure plate 6 is fixed in the longitudinal limiting position of the foam expansion joint plate 5, and the lateral clamping of the foam expansion joint plate 5 changes, it is only necessary to loosen the fixing clamp 3 to make corresponding fine adjustments to the foam expansion joint plate 5 to the required position, and then clamp it again by the fixing clamp 3, thereby completing the installation of the clamping fixture for the construction of the subway track bed expansion joint.

[0035] In this embodiment, by providing a handle 214 on the top of the frame 212 and hinged the lead screw 24 to the base 213, the operation of the operator is further facilitated. Moreover, by welding the steel plate 211 and the base 213 to both sides of the frame 212, the reliability of the connection between the clamping plate 21 and other components is effectively guaranteed.

[0036] like Figure 5 As shown, the fastening component 4 is a screw and nut assembly. In this embodiment, the fastening component 4 is a screw and nut assembly, and the clamping plate 21 is fixed between the left and right sets of hanger bodies 11 respectively by the screw and nut assembly. The screw and nut assembly is located on the other side of the U-shaped opening of the pressure plate 113.

[0037] The foregoing has provided a detailed description of a construction clamping fixture for subway track expansion joints. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely illustrative of the core ideas of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A clamping fixture for construction of expansion joints in subway track beds, characterized in that, The system includes a hanger component (1), a clamping plate component (2), a fixing clamp (3), a fastening assembly (4), a foam expansion joint board (5), a first pressure plate (6), and a guide rail (7). The bottom of each of the two guide rails (7) is equipped with a hanger component (1). Two parallel clamping plates (2) are fixed between the left and right hanger components (1) via a fastening assembly (4). The foam expansion joint board (5) is fixed between the two clamping plates (2) via a fixing clamp (3). The first pressure plate (6) is located on top of the foam expansion joint board (5). The hanger component (1) includes a hanger body (11), a second pressure plate (12), a clamping nut (13), and a joint bolt (14). The hanger body (11) includes a hanger main body (111), which is located at the bottom of the guide rail (7). An ear (112) is fixed to the lower part of one end of the hanger main body (111) located outside the guide rail (7). 111) A fixed pressure plate (113) is fixedly provided on the upper part of the other end, and a joint bolt (14) is provided on the ear (112). The second pressure plate (12) is movably located on the hanger body (111) and sleeved on the joint bolt (14). The clamping nut (13) is located on the second pressure plate (12) to fix the hanger body (11) to the bottom of the guide rail (7). The clamping plate component (2) includes a clamping plate body (21) and a pin (22). The clamping plate body (21) 21) Includes a steel plate (211), a frame (212) and a base (213). The steel plate (211) is fixedly installed on the inner side of the frame (212), and the base (213) is fixedly installed on the outer side of the frame (212). A lead screw (24) is provided on the base (213), and a nut (23) is sleeved on the lead screw (24). One end of a pin (22) is inserted into the nut (23), and the other end of the pin (22) is inserted into the first pressure plate (6).

2. The clamping fixture for construction of subway track expansion joints as described in claim 1, characterized in that, The lug (112) and the pressure plate (113) are both welded to the hanger body (111).

3. The clamping fixture for construction of subway track expansion joints as described in claim 2, characterized in that, The ear (112) is provided with a pivot (15), and the joint bolt (14) is hinged to the ear (112) through the pivot (15).

4. The clamping fixture for construction of subway track expansion joints as described in claim 3, characterized in that, The top of the skeleton (212) is provided with a handle (214).

5. The construction clamping fixture for subway track expansion joints as described in claim 4, characterized in that, The lead screw (24) is hinged to the base (213).

6. The clamping fixture for construction of subway track expansion joints as described in claim 5, characterized in that, The steel plate (211) and the base (213) are both welded to both sides of the frame body (212).

7. The clamping fixture for construction of subway track expansion joints as described in claim 6, characterized in that, The fastening component (4) is a screw and nut assembly.

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