Pressing seam fixing device for subway track bed expansion joint construction

Abstract

The utility model belongs to the technical field of track bed construction, and aims to solve the problems that a common ballastless track bed is greatly influenced by expansion joint asphalt board reinforcing construction factors, the situation of deflection in the concrete pouring process is easily caused, and the edge of an expansion joint is cracked. According to the seam pressing and fixing device for subway track bed expansion joint construction, two cross beams are horizontally hung and fixed to the lower ends of two parallel steel rails respectively, and the two cross beams are perpendicular to the center line of a track and located on the two sides of the center line of the track respectively; the two groove pressing devices are correspondingly arranged below the two cross beams respectively and are connected through a connecting device; the groove pressing device and the cross beam are connected through a plurality of lifting structures so that the height of the groove pressing device can be adjusted, and a plurality of fixing clamping grooves used for fixing asphalt boards are fixed to the bottom end of the groove pressing device at intervals. According to the device, it can be guaranteed that the asphalt board does not deviate in the pouring process, and the problem that the edge of the expansion joint cracks is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of roadbed construction, and in particular relates to a compression joint fixing device used for expansion joint construction of a subway roadbed. Background Art

[0002] During the subway construction process, the ordinary ballastless trackbed in stations and sections is greatly affected by the asphalt wood board reinforcement construction factors of the expansion joints, which can easily cause the concrete pouring process to deviate and lead to cracks at the edges of the expansion joints. Utility Model Content

[0003] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides a compression joint fixing device used for the construction of subway roadbed expansion joints.

[0004] The utility model is implemented by the following technical scheme: a compression joint fixing device for subway trackbed expansion joint construction, comprising a crossbeam, a groove pressing device, a lifting structure and a fixing slot;

[0005] Two cross beams are horizontally suspended and fixed at the lower ends of two parallel steel rails, and the two cross beams are perpendicular to the center line of the rails and are located on both sides of the center line of the rails;

[0006] The two groove pressing devices are respectively arranged under the two cross beams and connected by a connecting device; the groove pressing device and the cross beam are connected by a number of lifting structures to adjust the height of the groove pressing device, and a number of fixed slots for fixing asphalt wood boards are fixed at intervals at the bottom of the groove pressing device.

[0007] Preferably, the crossbeam is fixed to the rail by a crossbeam suspension structure, and the crossbeam suspension structure includes an L-shaped fixed pressure plate, an L-shaped movable pressure plate and a short screw. The L-shaped fixed pressure plate is fixed to the upper end of the crossbeam and the two form a space for clamping the outer plate of the lower end of the rail. The short screw passes through the L-shaped movable pressure plate and the crossbeam in sequence and is locked on the support under the rail. A space for clamping the inner plate of the lower end of the rail is formed between the L-shaped movable pressure plate and the crossbeam.

[0008] Preferably, the lifting structure includes a long screw, a movable nut and a fixed nut, and the lifting mechanism is arranged on the part of the cross beam located on the inner side of the rail; the long screw passes through the cross beam and is threadedly connected to the fixed nut fixed at the upper end of the groove pressing device, and two movable nuts threadedly connected to the long screw are movably arranged on the upper and lower sides of the long cross beam.

[0009] Preferably, the lower end of the fixed slot is a U-shaped notch that matches the asphalt wood board.

[0010] Preferably, a gap is left between the inner ends of the two cross beams, and the inner ends of the two groove pressing devices are connected by a connecting device; the groove pressing device is located directly below the corresponding cross beam, and the two groove pressing devices are perpendicular to the center line of the track and are horizontally arranged on both sides of the center line of the track.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The crossbeam of the device is tightened with the short screws on the L-shaped fixed pressure plate and the L-shaped movable pressure plate to ensure that the crossbeam will not deviate. The grooving device can be adjusted in height by connecting the fixed nuts on the grooving device with the long screws through the upper and lower movable nuts on the crossbeam, which is convenient to a certain extent. The grooving device is welded to the fixed slot, and the fixed slot is used to fix the asphalt wood board into a whole, and then tightened and fixed by the long screws on the crossbeam to ensure that the asphalt wood board will not deviate during the pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a cross-sectional view of the overall structure of the device;

[0015] Figure 2 It is a top view of the overall structure of the device;

[0016] Figure 3 It is a side view of the overall structure of the device.

[0017] In the figure: 1-beam; 2.1-L-type fixed pressure plate; 2.2-L-type movable pressure plate; 2.3-short screw; 3-groove pressing device; 4.1-long screw; 4.2-movable nut; 4.3-fixed nut; 5-fixed slot; 6-connecting device. DETAILED DESCRIPTION

[0018] Combined with the drawings in the embodiments of the utility model, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0020] The utility model provides an embodiment:

[0021] like Figures 1 to 3 As shown, a compression joint fixing device for the construction of expansion joints of subway track beds comprises a crossbeam 1, a groove pressing device 3, a lifting structure and a fixed slot 5; two crossbeams 1 are horizontally suspended and fixed at the lower ends of two parallel steel rails, and the two crossbeams 1 are perpendicular to the center line of the rails and are respectively located on both sides of the center line of the rails; the two groove pressing devices 3 are respectively arranged under the two crossbeams 1 and connected by a connecting device 6; the groove pressing device 3 and the crossbeam 1 are connected by a number of lifting structures to adjust the height of the groove pressing device 3 to meet the design requirements of the expansion joint; a number of fixed slots 5 for fixing asphalt wooden boards are fixed at intervals at the bottom end of the groove pressing device 3, and the lower end of the fixed slot 5 is a U-shaped slot matching the asphalt wooden board.

[0022] In this embodiment, the crossbeam 1 is fixed to the rail by a crossbeam suspension structure, and the crossbeam suspension structure includes an L-shaped fixed pressure plate 2.1, an L-shaped movable pressure plate 2.2 and a short screw 2.3. The L-shaped fixed pressure plate 2.1 is fixed to the upper end of the crossbeam 1 and the two form a space for clamping the outer plate of the lower end of the rail. The short screw 2.3 passes through the L-shaped movable pressure plate 2.2 and the crossbeam 1 in sequence and is locked on the support under the rail. A space for clamping the inner plate of the lower end of the rail is formed between the L-shaped movable pressure plate 2.2 and the crossbeam 1.

[0023] The lifting structure includes a long screw 4.1, a movable nut 4.2 and a fixed nut 4.3. The lifting mechanism is arranged on the part of the cross beam 1 located on the inner side of the rail; the long screw 4.1 passes through the cross beam 1 and is threadedly connected with the fixed nut 4.3 fixed at the upper end of the groove pressing device 3, and two movable nuts 4.2 threadedly connected to the long screw 4.1 are movably arranged on the upper and lower sides of the long cross beam 1.

[0024] A gap is left between the inner ends of the two cross beams 1, and the inner ends of the two groove pressing devices 3 are connected by a connecting device 6; the groove pressing device 3 is located directly below the corresponding cross beam 1, and the two groove pressing devices 3 are perpendicular to the center line of the track and are horizontally arranged on both sides of the center line of the track.

[0025] The crossbeam is welded and connected by an L-shaped fixed pressure plate, and can be suspended at the bottom of the rail using the clamping space of the fixed pressure plate. To ensure that the crossbeam does not deviate, the L-shaped movable pressure plate is fixed to the rail and tightened by a short screw to ensure that the L-shaped movable pressure plate and the crossbeam do not deviate. The groove pressing device is welded and connected to the fixed card slot, and the asphalt wood board can be connected into a whole through the fixed card slot. The height of the groove pressing device can be adjusted to meet the expansion joint depth requirements through the movable nuts at the top and bottom of the crossbeam and the fixed nuts on the groove pressing device.

[0026] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A compression joint fixing device for subway trackbed expansion joint construction, characterized in that: It comprises a crossbeam (1), a groove pressing device (3), a lifting structure and a fixed groove (5); Two cross beams (1) are horizontally suspended and fixed at the lower ends of two parallel steel rails, respectively. The two cross beams (1) are perpendicular to the center line of the rails and are respectively located on both sides of the center line of the rails. The two groove pressing devices (3) are respectively arranged below the two cross beams (1) and are connected via a connecting device (6); the groove pressing devices (3) and the cross beams (1) are connected via a plurality of lifting structures for adjusting the height of the groove pressing devices (3); a plurality of fixed slots (5) for fixing asphalt wood boards are fixed at intervals at the bottom end of the groove pressing devices (3).

2. The compression joint fixing device for subway trackbed expansion joint construction according to claim 1, characterized in that: The crossbeam (1) is fixed to the rail via a crossbeam suspension structure, the crossbeam suspension structure comprising an L-shaped fixed pressure plate (2.1), an L-shaped movable pressure plate (2.2) and a short screw (2.3), the L-shaped fixed pressure plate (2.1) being fixed to the upper end of the crossbeam (1) and the two forming a space for clamping the outer side plate at the lower end of the rail, the short screw (2.3) passing through the L-shaped movable pressure plate (2.2) and the crossbeam (1) in sequence and being locked on a support below the rail, forming a space for clamping the inner side plate at the lower end of the rail between the L-shaped movable pressure plate (2.2) and the crossbeam (1).

3. The compression joint fixing device for subway trackbed expansion joint construction according to claim 1 is characterized in that: The lifting structure comprises a long screw (4.1), a movable nut (4.2) and a fixed nut (4.3); the lifting mechanism is arranged on a portion of a cross beam (1) located on the inner side of a steel rail; the long screw (4.1) passes through the cross beam (1) and is threadedly connected to a fixed nut (4.3) fixed to the upper end of a groove pressing device (3); two movable nuts (4.2) threadedly connected to the long screw (4.1) are movably arranged on the upper and lower sides of the long cross beam (1).

4. The compression joint fixing device for subway trackbed expansion joint construction according to claim 1, characterized in that: The lower end of the fixed slot (5) is a U-shaped notch matched with the asphalt wood board.

5. The compression joint fixing device for subway trackbed expansion joint construction according to claim 1, characterized in that: A gap is left between the inner ends of the two cross beams (1), and the inner ends of the two groove pressing devices (3) are connected via a connecting device (6); the groove pressing devices (3) are located directly below the corresponding cross beams (1), and the two groove pressing devices (3) are perpendicular to the center line of the track and are respectively arranged horizontally on both sides of the center line of the track.

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