Prefabricated embedded track slab

Abstract

The present invention relates to the technical field of track plate bodies, specifically to a prefabricated embedded track plate, comprising a base and a track plate body, and further comprising: a plurality of arc-shaped clamping blocks, wherein the plurality of arc-shaped clamping blocks are respectively arranged on the track plate body, and are used to respectively clamp the two sides of the I-shaped rail; a plurality of bolts, wherein the plurality of bolts are installed on the track plate body, and are used to drive adjacent fasteners to fit the I-shaped rail; a plurality of controlled extrusion units, wherein the plurality of controlled extrusion units are arranged on the track plate body, and after the I-shaped steel is inserted into the track plate body, tightening the bolts can trigger the adjacent controlled extrusion units to work, thereby driving the adjacent arc-shaped clamping blocks to shift and clamp one side of the arc-shaped clamping blocks; a plurality of linkage units, wherein the plurality of linkage units are respectively arranged on the track plate body. This prefabricated embedded track plate, by utilizing the cooperation of the controlled extrusion units and the linkage units, can reduce the friction between the arc-shaped clamping blocks and the rails during installation, reduce the work intensity of the staff, and reduce the wear of the front of the rails.

Description

Technical Field

[0001] The invention relates to the technical field of track slabs, in particular to a prefabricated embedded track slab. Background Art

[0002] In recent years, with the rapid development of rail transit in my country, rail transit has gradually become part of our lives. In existing ballastless tracks, the bonding performance between the track slab and other parts is the key to affecting the static, dynamic and long-term durability of the ballastless track structure system. However, after a period of use, the existing prefabricated track slabs in railway projects are prone to sliding between the track slabs and other layers, and they generate a lot of noise during use, affecting the lives of people around them.

[0003] To solve the above problems, the Chinese utility model patent with announcement number CN211848649U discloses a prefabricated track plate for railway engineering, including a reinforced concrete base, a concrete layer is provided at the upper end of the reinforced concrete base, a plurality of recessed portions are provided on the upper surface of the reinforced concrete base, a plurality of raised portions are provided on the lower surface of the concrete layer, a mortar layer is provided at the upper end of the concrete layer, a track plate is provided at the upper end of the mortar layer, a plurality of embedded connecting parts are provided at the inner bottom end of the track plate, the other ends of the embedded connecting parts are fixedly arranged inside the reinforced concrete base, rail bearing grooves are provided on both sides of the upper end of the track plate, clamping devices are provided inside the two rail bearing grooves, threaded holes are provided on both sides of the top of the rail bearing grooves, bolts are threaded in the threaded holes, fasteners are passed through the two bolts, the opposite ends of the two fasteners are hinged to the fixed blocks provided on the track plate, and the other ends extend into the interior of the rail bearing grooves, and sound absorbing layers are provided on the inner bottom walls of the two rail bearing grooves.

[0004] However, in actual use, we found that when installing the rails, the front of the rail entering the track plate needs to constantly contact the arc-shaped clamping blocks, which causes a large friction between the two. This not only greatly increases the resistance to the advancement of the rail and increases the workload of the staff, but also because the front of the rail will contact all the arc-shaped clamping blocks, it also increases the wear of the front of the rail to a certain extent. For this reason, we proposed prefabricated embedded track plates. Summary of the Invention

[0005] A technical problem to be solved by this application is: how to design a prefabricated embedded track plate that can reduce the friction between the arc-shaped clamping block and the rail during installation.

[0006] To solve the above technical problems, the present invention provides a prefabricated embedded track plate, including a base and a track plate body, and further comprising:

[0007] A plurality of arc-shaped clamping blocks are respectively arranged on the track plate body and are used to clamp two sides of the I-shaped rail respectively;

[0008] A plurality of bolts, wherein the plurality of bolts are mounted on the track plate body and are used to drive adjacent fasteners to fit the I-shaped rail;

[0009] Multiple controlled extrusion units are arranged on the track plate body. After the I-shaped steel is inserted into the track plate body, tightening the bolts can trigger the adjacent controlled extrusion units to work, thereby driving the adjacent arc-shaped clamping blocks to shift and clamp one side of the arc-shaped clamping blocks;

[0010] Multiple linkage units are respectively arranged on the track plate body. When the controlled extrusion unit is working, the adjacent linkage units can be driven to work synchronously, thereby allowing the staff to observe the position of the arc clamping block.

[0011] In some embodiments, a circular slot is provided on the track plate body, the controlled extrusion unit includes an extrusion spring arranged in the circular slot, an extrusion piece is provided in the circular slot for extruding one side of the I-shaped rail, and a control piece connected to the bolt is provided on the track plate body for triggering the extrusion spring to work when the bolt is tightened.

[0012] In some embodiments, the extrusion member includes a connecting column arranged at the end of the extrusion spring, the arc-shaped clamping block is arranged on the connecting column, the connecting column is provided with an arc-shaped protrusion, and the circular groove is provided with a limiting protrusion that cooperates with the arc-shaped protrusion.

[0013] In some embodiments, the arc-shaped protrusion and the limiting protrusion are both chamfered.

[0014] In some embodiments, a movable groove is provided on the track plate body, and the control component includes a return spring arranged in the movable groove. A push rod is provided in the middle of the return spring, and the push rod is movable through the track plate body. The top of the push rod can contact the bolt, and the bottom can contact the arc-shaped protrusion.

[0015] In some embodiments, the linkage unit includes a fixed seat arranged in a circular groove, and a fitting is provided on the fixed seat for use with the arc-shaped protrusion to determine the position of the arc-shaped protrusion. An observation piece is provided on the track plate body to allow staff to observe the position of the arc-shaped clamping block.

[0016] In some embodiments, the fitting includes an airbag 1 arranged on the fixing seat, and a connecting pipe is provided at one end of the airbag 1 away from the arc-shaped protrusion, and the connecting pipe runs through the fixing seat and the track plate body.

[0017] In some embodiments, a fixing groove is provided on the track plate body, and the observation piece includes airbag 2 arranged in the fixing groove, and the bottom of airbag 2 is connected to airbag 1 through a connecting pipe.

[0018] In some embodiments, a flexible protective layer is provided on the outside of airbag 1 and airbag 2.

[0019] In some embodiments, a warning coating is provided on the top of the second airbag, and scale lines are provided on the outside of the second airbag.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. The combination of the controlled extrusion unit and the linkage unit can reduce the friction between the arc clamp and the rail during installation, reduce the workload of the staff, and reduce the wear on the front of the rail;

[0022] 2. By designing multiple arc-shaped clamps and controlled extrusion units, when the I-shaped rail is inserted into the track plate body and the bolts are tightened, the extrusion unit can be automatically triggered to work, so that the arc-shaped clamps can accurately clamp both sides of the rail, greatly improving installation efficiency and accuracy;

[0023] 3. The tight clamping of the rail by the arc-shaped clamping block and the tightening effect of the bolts together form a stable support structure, effectively preventing the track from displacement or loosening due to vibration or external force during use, and enhancing the overall stability of the track system;

[0024] 4. The design of the linkage unit enables the staff to visually observe the position status of the arc clamp, and conduct preliminary inspection and judgment without disassembling the track plate body, which facilitates the timely discovery and treatment of potential problems and reduces maintenance costs and difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 Another structural diagram;

[0027] Figure 3 For the present invention Figure 1 Schematic diagram of the local cross-section structure;

[0028] Figure 4 For the present invention Figure 3 Schematic diagram of the local cross-section structure;

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of area A in the middle;

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of the present invention;

[0031] Figure 7 This is a schematic structural diagram of the controlled extrusion unit of the present invention;

[0032] Figure 8 This is a schematic diagram of the warning layer and scale line structure of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the warning layer, scale lines and flexible protective layer of the present invention.

[0034] In the figure: 1. Base; 2. Track plate body; 3. Arc-shaped clamping block; 4. Bolt; 5. Controlled extrusion unit; 51. Circular notch; 52. Extrusion spring; 6. Extrusion piece; 61. Connecting column; 62. Arc-shaped protrusion; 63. Limiting protrusion; 7. Control piece; 71. Movable groove; 72. Return spring; 73. Push rod; 8. Linkage unit; 81. Fixed seat; 9. Fitting piece; 91. Airbag 1; 92. Connecting pipe; 10. Observation piece; 101. Fixed groove; 102. Airbag 2; 11. Flexible protective layer; 12. Warning coating; 13. Scale line. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Example 1

[0037] See also Figure 1-7 , the present invention provides a technical solution:

[0038] The prefabricated embedded track plate includes a base 1 and a track plate body 2. The base 1 and the track plate body 2 are both common existing structures. For details, please refer to the patent content with announcement number CN211848649U. No further details will be given here. The following are also included:

[0039] A plurality of arc-shaped clamping blocks 3, each of which is provided on the track plate body 2 and is used to clamp both sides of the I-shaped rail;

[0040] A plurality of bolts 4 are mounted on the track plate body 2 to drive adjacent fasteners to fit the I-shaped rail. The fasteners are of a common existing structure. For details, see the patent publication number CN211848649U, which will not be described in detail here.

[0041] Multiple controlled extrusion units 5 are provided on the track plate body 2. After the I-shaped steel is inserted into the track plate body 2, tightening the bolts 4 can trigger the adjacent controlled extrusion units 5 to work, thereby driving the adjacent arc-shaped clamping blocks 3 to shift and clamp one side of the arc-shaped clamping blocks 3;

[0042] The track plate body 2 is provided with a circular notch 51, and the controlled extrusion unit 5 includes an extrusion spring 52 disposed in the circular notch 51. An extrusion member 6 is disposed in the circular notch 51 for extruding one side of the I-shaped rail. The track plate body 2 is provided with a control member 7 connected to the bolt 4 for triggering the extrusion spring 52 to operate when the bolt 4 is tightened.

[0043] The extrusion member 6 includes a connecting column 61 provided at the end of the extrusion spring 52, the arc-shaped clamping block 3 is provided on the connecting column 61, the connecting column 61 is provided with an arc-shaped protrusion 62, and the circular notch 51 is provided with a limiting protrusion 63 that cooperates with the arc-shaped protrusion 62;

[0044] The arc-shaped protrusion 62 and the limiting protrusion 63 are both chamfered. The chamfered positions of the arc-shaped protrusion 62 and the limiting protrusion 63 are used in conjunction with each other to facilitate the subsequent resetting of the arc-shaped protrusion 62 and the arc-shaped clamping block 3.

[0045] The track plate body 2 is provided with a movable groove 71, and the control member 7 includes a return spring 72 disposed in the movable groove 71. A push rod 73 is provided in the middle of the return spring 72. The push rod 73 is movable and passes through the track plate body 2. The top of the push rod 73 can contact the bolt 4, and the bottom can contact the arc-shaped protrusion 62.

[0046] Multiple linkage units 8, each of which is provided on the track plate body 2. When the controlled extrusion unit 5 is working, the adjacent linkage units 8 can be driven to work synchronously, thereby allowing the staff to observe the position of the arc-shaped clamping block 3;

[0047] The linkage unit 8 includes a fixing seat 81 disposed in the circular notch 51. The fixing seat 81 is provided with a fitting member 9 for cooperating with the arc-shaped protrusion 62 to determine the position of the arc-shaped protrusion 62. The track plate body 2 is provided with an observation member 10 to allow staff to observe the position of the arc-shaped clamping block 3. The setting of the fixing seat 81 can cooperate with the arc-shaped protrusion 62 without interfering with the arc-shaped clamping block 3.

[0048] The fitting member 9 includes an airbag 91 disposed on the fixing seat 81. A connecting pipe 92 is disposed at one end of the airbag 91 away from the arc-shaped protrusion 62. The connecting pipe 92 passes through the fixing seat 81 and the track plate body 2.

[0049] A fixing groove 101 is provided on the track plate body 2 , and the observation piece 10 includes an airbag 2 102 arranged in the fixing groove 101 , and the bottom of the airbag 2 102 is connected to the airbag 1 91 through a connecting pipe 92 .

[0050] When in use, after the I-shaped rail is inserted into the track plate body 2, the multiple arc-shaped clamping blocks 3 are in the initial position, and the extrusion spring 52 is in a compressed state. As the bolt 4 is gradually tightened, the bottom of the bolt 4 contacts the push rod 73 in the control member 7. The push rod 73 compresses the return spring 72 and moves downward until it contacts the arc-shaped protrusion 62 on the connecting column 61 at the end of the extrusion spring 52. When the arc-shaped protrusion 62 is free from the restriction of the limit protrusion 63, the extrusion spring 52 begins to release, generating an outward elastic force, which is transmitted to the arc-shaped clamping block 3 through the connecting column 61, causing it to move toward the I-shaped rail and gradually clamp both sides of the rail.

[0051] Then, the airbag 1 91 in the linkage unit 8 is squeezed by the arc-shaped protrusion 62 and deformed, and the gas is transferred to the airbag 2 102 through the connecting pipe 92, causing the airbag 2 102 to change, thereby allowing the staff to observe the position and clamping state of the arc-shaped clamp 3 from the outside. If the airbag 2 102 does not extend from the fixed groove 101, it means that the extrusion spring 52 is damaged and fails to provide a normal extrusion effect.

[0052] Example 2

[0053] See also Figure 8-9 , the present invention provides a technical solution:

[0054] The difference from Example 1 is that a flexible protective layer 11 is provided on the outer sides of the airbag 1 91 and the airbag 2 102;

[0055] A warning coating 12 is provided on the top of the airbag 2 102, and a scale line 13 is provided on the outside of the airbag 2 102. The warning coating 12 adopts a bright coating to facilitate observation by the staff. At the same time, the scale line 13 is also for easy observation. When the staff sees the bright coating extending out of the fixed groove 101, they know that the internal extrusion spring 52 is in a normal state, so it has a clamping and positioning effect on the I-shaped rail. The scale line 13 is for the convenience of observing the elastic capacity of the extrusion spring 52, that is, the more part extending out of the fixed groove 101, the higher the elastic capacity, and the less part extending out of the fixed groove 101, the lower the elastic capacity. Based on this data, it can be judged whether the extrusion spring 52 needs to be replaced, which is conducive to ensuring the normal clamping of the I-shaped rail and the normal operation of the track.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated embedded track plate, comprising a base (1) and a track plate body (2), characterized in that: Also included are: A plurality of arc-shaped clamping blocks (3), each of which is arranged on the track plate body (2) and is used to clamp two sides of the I-shaped rail respectively; A plurality of bolts (4), the plurality of bolts (4) being mounted on the track plate body (2) and used to drive adjacent fasteners to fit the I-shaped rail; A plurality of controlled extrusion units (5), wherein the plurality of controlled extrusion units (5) are arranged on the track plate body (2), and when the I-shaped steel is inserted into the track plate body (2), tightening the bolts (4) can trigger the adjacent controlled extrusion units (5) to work, thereby driving the adjacent arc-shaped clamping blocks (3) to shift and clamp one side of the arc-shaped clamping blocks (3); A plurality of linkage units (8), wherein the plurality of linkage units (8) are respectively arranged on the track plate body (2), and when the control type extrusion unit (5) is working, the adjacent linkage units (8) can be driven to work synchronously, thereby allowing the staff to observe the position of the arc clamping block (3); a circular notch (51) is provided on the track plate body (2); the control type extrusion unit (5) includes an extrusion spring (52) arranged in the circular notch (51); an extrusion member (6) is provided in the circular notch (51) for extruding one side of the I-shaped rail; a control member (7) connected to the bolt (4) is provided on the track plate body (2) for triggering the extrusion spring (52) to work when the bolt (4) is tightened; The track plate body (2) is provided with a movable groove (71), the control member (7) includes a return spring (72) arranged in the movable groove (71), a push rod (73) is provided in the middle of the return spring (72), the push rod (73) is movable and passes through the track plate body (2), the top of the push rod (73) can contact the bolt (4), and the bottom can contact the arc-shaped protrusion (62); The linkage unit (8) includes a fixing seat (81) arranged in the circular notch (51), and a fitting member (9) is provided on the fixing seat (81) for cooperating with the arc-shaped protrusion (62) to determine the position of the arc-shaped protrusion (62). The track plate body (2) is provided with an observation member (10) to allow a worker to observe the position of the arc-shaped clamping block (3); The extrusion member (6) includes a connecting column (61) arranged at the end of the extrusion spring (52), the arc-shaped clamping block (3) is arranged on the connecting column (61), the connecting column (61) is provided with an arc-shaped protrusion (62), and the circular groove (51) is provided with a limiting protrusion (63) that matches the arc-shaped protrusion (62); the fitting member (9) includes an air bag (91) arranged on the fixing seat (81), and the end of the air bag (91) away from the arc-shaped protrusion (62) is provided with a connecting pipe (92), and the connecting pipe (92) passes through the fixing seat (81) and the track plate body (2).

2. The prefabricated embedded track slab according to claim 1, characterized in that: The arc-shaped protrusion (62) and the limiting protrusion (63) are both chamfered.

3. The prefabricated embedded track slab according to claim 1, characterized in that: A fixing groove (101) is provided on the track plate body (2), and the observation piece (10) includes a second airbag (102) arranged in the fixing groove (101), and the bottom of the second airbag (102) is connected to the first airbag (91) through a connecting pipe (92).

4. The prefabricated embedded track slab according to claim 3, characterized in that: The outer sides of the airbag 1 (91) and the airbag 2 (102) are both provided with a flexible protective layer (11).

5. The prefabricated embedded track slab according to claim 3, characterized in that: A warning coating (12) is provided on the top of the second airbag (102), and a scale line (13) is provided on the outside of the second airbag (102).

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