Subway rail temporary supporting device

Abstract

The utility model relates to a subway track temporary supporting device which comprises an upper base plate used for supporting a track and at least four leveling assemblies installed on the upper base plate, and the four leveling assemblies are evenly distributed at intervals. The leveling assembly comprises a ball head screw, a leveling nut and a supporting nut, wherein the ball head section of the ball head screw is used for being supported on the ground, the screw section of the ball head screw is arranged on the upper base plate in a penetrating mode, the leveling nut is fixed to the end of the screw section of the ball head screw and located above the upper base plate, the supporting nut is screwed to the ball head screw and located below the upper base plate, and the supporting nut is fixed to the upper base plate. The rail temporary support solves the technical problems that in the prior art, a rail temporary support needs to be combined with other leveling tools or structures to conduct leveling operation on the temporary support, after the rail temporary support is installed on the temporary support, the rail is occupied, and therefore operation of a flat car is affected. The utility model has the advantages of simple structure, convenience in assembly and disassembly and high bearing capacity.

Description

Technical Field

[0001] The utility model relates to the field of rail transportation engineering, in particular to a temporary supporting device for a subway track. Background Art

[0002] When the original supports of old subway tracks begin to age, they need to be updated and replaced section by section. During the replacement process, temporary supports need to be installed on the original tracks. The existing temporary supports are complex in structure and large in size. When installing, they need to be leveled in combination with other leveling tools or structures. Other leveling tools or structures are complicated to operate. After being installed on the temporary supports, the height is set at the track or the distance to the track is close, which will occupy the track and affect the operation of the flatbed truck. Utility Model Content

[0003] In view of the shortcomings existing in the above-mentioned prior art, the utility model provides a temporary support device for subway tracks, which solves the technical problems that the temporary track support in the prior art needs to be combined with other leveling tools or structures to perform temporary support leveling operations, and after being installed on the temporary support, it will occupy the track, thereby affecting the operation of the flatbed truck.

[0004] The utility model discloses a temporary support device for subway track, comprising an upper pad for supporting the track, and at least four leveling components installed on the upper pad, wherein the four leveling components are evenly spaced and arranged, and the leveling component comprises a ball head screw whose ball head section is used for supporting on the ground and whose screw section passes through the upper pad, a leveling nut fixed to the end of the screw section of the ball head screw and located above the upper pad, and a supporting nut screwed on the ball head screw and located below the upper pad, wherein the supporting nut is fixed to the upper pad.

[0005] The temporary support device for subway tracks of the utility model is further improved in that the leveling component further comprises a ball seat, and the ball seat is provided with a groove for accommodating the lower half of the ball head section of the ball head screw.

[0006] A further improvement of the temporary support device for subway tracks of the utility model is that the leveling assembly also includes a pressure plate for limiting the ball head section of the ball head screw, the pressure plate is provided with an opening adapted to the shape of the upper half of the ball head section of the ball head screw, and the pressure plate is detachably mounted on the ball seat.

[0007] The utility model subway track temporary support device is further improved in that the pressing plate is connected to the ball seat by bolts, and threaded holes for the bolts to be screwed are respectively provided on the pressing plate and the ball seat.

[0008] The temporary support device for subway tracks of the utility model is further improved in that at least four ball seats of the leveling components are fixed together on a lower pad.

[0009] The temporary support device for subway tracks of the utility model is further improved in that a buffer plate used for the track pad is provided on the upper pad.

[0010] A further improvement of the temporary support device for subway tracks of the utility model is that the buffer plate is made of rubber material.

[0011] A further improvement of the temporary support device for subway tracks of the utility model is that the support nut is a cylindrical nut.

[0012] Compared with the existing technology, the utility model has a positive and obvious effect. The utility model can perform leveling and provide temporary support at the same time through the combination of the ball screw and the upper pad, and the height of the leveling component is not higher than the track, which solves the technical problem that the track temporary support in the prior art needs to be combined with other leveling tools or structures for temporary support leveling operation, and after being installed on the temporary support, it will occupy the track, thereby affecting the operation of the flatbed truck. The utility model has a simple structure, is easy to install and disassemble, and has a high bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 1 It is a three-dimensional diagram of the temporary support device for subway tracks of the present utility model.

[0015] Figure 2 It is a longitudinal sectional view of the temporary support device for subway track of the utility model. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1 and Figure 2As shown, the utility model provides a temporary support device for a subway track 1, including an upper pad 2 for supporting the track 1, and at least four leveling components installed on the upper pad 2, the four leveling components are evenly spaced, and the leveling component includes a ball head screw 3 with a ball head section for supporting the ground and a screw section passing through the upper pad 2, a leveling nut 4 fixed to the end of the screw section of the ball head screw 3 and located above the upper pad 2, and a support nut 5 screwed on the ball head screw 3 and located below the upper pad 2, and the support nut 5 is fixed to the upper pad 2. In this embodiment, the pad is a rectangular plate, and at least one leveling component is provided at the four corners of the pad. The leveling nut 4 adopts an M16 (diameter 16mm) nut, the ball head screw 3 adopts an M42 (diameter 42mm) ball head screw 3, and the support nut 5 adopts an M42 (diameter 42mm) cylindrical nut. The estimated bearing capacity of a single ball screw 3 and cylindrical nut is 16t, and the total bearing capacity is about 64t. Since the M42 cylindrical nut is relatively large and is located below the upper pad 2, it is not convenient to screw it. Therefore, the utility model adopts a method of fixing the leveling nut 4 on the top of the ball screw 3, and adjusting the height of the support nut 5 by rotating the leveling nut 4 and rotating the entire ball screw 3. Since the support nut 5 is fixed to the upper pad 2, the height of the upper pad 2 can be adjusted at the same time, thereby realizing the leveling of the entire temporary support device. Since the support nut 5 is fixed to the upper pad 2 and the support nut 5 is screwed with the ball screw 3, the upper part of the upper pad 2 does not need to be fastened or fixed by other structures, and can move up and down with the support nut 5 without being separated from the support nut 6.

[0018] Preferably, the leveling assembly further comprises a ball seat 7, and the ball seat 7 is provided with a groove for accommodating the lower half of the ball head section of the ball screw 3. In the utility model, the ball screw 3 supports the entire leveling assembly through the ball head section, and the screw section faces upward to achieve the leveling function. Specifically, the groove is a hemispherical groove that matches the shape of the lower half of the ball head section of the ball screw 3, so that the ball head section of the ball screw 3 can be seated on the ball seat 7, and when the leveling nut 4 is rotated, the ball head section of the ball screw 3 can be rotated in the groove.

[0019] Preferably, the leveling assembly further comprises a pressing plate 6 for limiting the ball head section of the ball screw 3, the pressing plate 6 is provided with an opening adapted to the shape of the upper half of the ball head section of the ball screw 3, and the pressing plate 6 is detachably mounted on the ball seat 7. Specifically, the opening is in a shape of being small at the top and large at the bottom, and the side wall is in an arcuate surface shape, so as to limit the ball head section of the ball screw 3 inside the groove, and prevent the ball head section of the ball screw 3 from falling out of the groove during the process of rotating the ball head section of the ball screw 3 in the groove when the leveling nut 4 is rotated.

[0020] Preferably, the pressing plate 6 is connected to the ball seat 7 by bolts 10, and threaded holes for the bolts 10 to be screwed are respectively provided on the pressing plate 6 and the ball seat 7. Specifically, the cross section of the ball seat 7 is square, the pressing block is a square with the same size as the ball seat 7, and there are four bolts 10, which are respectively located at the four corners of the pressing plate 6. The connection method using bolts 10 is convenient for installation and disassembly. The ball seat 7 and the pressing plate 6 can also be of other shapes, as long as they can provide space for the ball head section after being combined. The bolt 10 can be an M16 (diameter 16mm) hexagon socket head bolt 10.

[0021] Preferably, at least four ball seats 7 of the leveling assembly are fixed together on a lower pad 8. The pad is fixed on the ground, forming the leveling assembly into a whole body that is subjected to common force.

[0022] Preferably, a buffer plate 9 for padding the track 1 is provided on the upper pad 2. The buffer plate 9 can reduce the vibration and wear of the track 1 on the upper pad 2.

[0023] Preferably, the buffer plate 9 is made of rubber material. The rubber material has good vibration reduction performance, and the thickness should be not less than 2 cm.

[0024] Preferably, the support nut 5 is a cylindrical nut. The cylindrical nut has a large thread length and a large area for threading with the ball screw 3, thereby reducing the probability of thread stripping.

[0025] During installation, first weld and fix a leveling nut 4 at the end of the screw section of each ball screw 3, and insert a pressure plate 6 on each ball screw 3 in the positive direction, screw the support nuts 5 one by one to the same position on the ball screw 3, insert the upper pad 2 on all ball screws 3, and weld and fix the upper end faces of the upper pad 2 and the support nuts 5, then fix all the ball seats 7 and the lower pad 8 by welding, and place the lower pad 8 flat under the track 1, and make the center line of the length direction of the lower pad 8 coincide with the center axis of the track 1. Place a ball screw 3 on each ball seat 7 under the track 1, and make the upper pad 2 located under the track 1, fix the pressure plate 6 to the ball seat 7 by bolts 10, insert the buffer plate 9 between the track 1 and the upper pad 2, rotate the leveling nut 4 by a wrench or other tools, so that the leveling nut 4 drives the ball screw 3 to rotate, so that the support nut 5 moves upward on the ball screw 3, and at the same time drives the upper pad 2 to rise and tighten the buffer plate 9, and at the same time adjusts the horizontality of the upper pad 2 to be consistent with the horizontality of the track 1.

[0026] The utility model can perform leveling and provide temporary support at the same time through the combination of the ball screw and the upper pad, and the height of the leveling component is not higher than the track, which solves the technical problem that the track temporary support in the prior art needs to be combined with other leveling tools or structures for temporary support leveling operation, and after being installed on the temporary support, it will occupy the track, thereby affecting the operation of the flatbed truck. The utility model has a simple structure, is easy to install and disassemble, and has a high bearing capacity.

[0027] The parts not involved in the present utility model are the same as the prior art or can be implemented by the prior art. The above is only the preferred embodiment of the present utility model, and does not limit the present utility model in any form. Although the present utility model has been disclosed as the preferred embodiment, it is not used to limit the present utility model. Any technician familiar with this profession can make some changes or modify the technical content disclosed above to an equivalent embodiment of equivalent changes without departing from the scope of the technical solution of the present utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still belongs to the scope of the technical solution of the present utility model.

Claims

1. A temporary support device for subway tracks, characterized in that: It includes an upper pad for supporting the rail, and at least four leveling components installed on the upper pad, the four leveling components are evenly spaced, the leveling component includes a ball head screw with a ball head section supported on the ground and a screw section passing through the upper pad, a leveling nut fixed to the end of the screw section of the ball head screw and located above the upper pad, and a support nut screwed on the ball head screw and located below the upper pad, the support nut is fixed to the upper pad.

2. The temporary support device for subway track according to claim 1, characterized in that: The leveling assembly also includes a ball seat, which is provided with a groove for accommodating the lower half of the ball head section of the ball head screw.

3. The temporary support device for subway track according to claim 2, characterized in that: The leveling assembly also includes a pressure plate for limiting the ball head section of the ball head screw, the pressure plate is provided with an opening adapted to the shape of the upper half of the ball head section of the ball head screw, and the pressure plate is detachably mounted on the ball seat.

4. The temporary support device for subway track according to claim 3, characterized in that: The pressing plate is connected to the ball seat by bolts, and threaded holes for the bolts to be screwed are respectively provided on the pressing plate and the ball seat.

5. The temporary support device for subway track according to claim 1, characterized in that: At least four ball seats of the leveling assemblies are fixed together on a lower pad.

6. The temporary support device for subway track according to claim 1, characterized in that: The upper pad is provided with a buffer plate for the track pad.

7. The temporary support device for subway track according to claim 6, characterized in that: The buffer plate is made of rubber material.

8. The temporary support device for subway track according to claim 1, characterized in that: The supporting nut is a cylindrical nut.

Images