Prefabricated embedded track board

Abstract

The invention relates to the technical field of track plate bodies, in particular to a prefabricated embedded track plate which comprises a base and a track plate body and further comprises a plurality of arc-shaped clamping blocks arranged on the track plate body and used for clamping the two sides of an I-shaped steel rail respectively. The multiple bolts are installed on the track plate body and used for driving the adjacent fasteners to be attached to the I-shaped steel rail; the multiple control type extrusion units are arranged on the track plate body, after I-shaped steel is inserted into the track plate body, the adjacent control type extrusion units can be triggered to work when bolts are tightened, then the adjacent arc-shaped clamping blocks are driven to move, and one sides of the arc-shaped clamping blocks are clamped; according to the prefabricated embedded track board, by means of cooperation of the control type extrusion units and the linkage units, friction force between the arc-shaped clamping blocks and a steel rail can be reduced during installation, the working intensity of workers is reduced, and the abrasion condition of the front portion of the steel rail is reduced.

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 entered our lives; in the existing ballastless track, the bonding performance between the track plate and the other parts is the key to affecting the static, dynamic performance and long-term durability of the ballastless track structure system; however, the existing railway engineering prefabricated track plates are prone to sliding between the track plates and the other layers after being used for a long time, and will generate a lot of noise during use, affecting the lives of people around.

[0003] To solve the above problems, a 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 protrusions 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 connectors are provided at the inner bottom end of the track plate, the other ends of the embedded connectors 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 threadedly connected in the threaded holes, fasteners are passed through the two bolts, the ends of the two fasteners that are separated from each other are hinged to the fixed block 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 part of the rails 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 of the rails during advancement and increases the workload of the staff, but also because the front part of the rails will contact all the arc-shaped clamping blocks, it also increases the wear of the front part of the rails 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 the present 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] In order to solve the above technical problems, the embodiment of the present application provides a prefabricated embedded track plate, including a base and a track plate body, and also includes:

[0007] A plurality of arc-shaped clamping blocks, each of which is disposed on the track plate body and is 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] 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;

[0010] A plurality of 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, so that the staff can observe the position of the arc clamping block.

[0011] In some embodiments, a circular groove is provided on the track plate body, and the controlled extrusion unit includes an extrusion spring arranged in the circular groove. An extrusion piece is provided in the circular groove for extruding one side of the I-shaped rail. 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, an arc-shaped protrusion is arranged on the connecting column, and a limiting protrusion matching the arc-shaped protrusion is arranged in the circular groove.

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

[0014] In some embodiments, a movable groove is opened on the track plate body, and the control component includes a return spring arranged in the movable groove. A push rod is arranged in the middle of the return spring. The push rod moves 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 comprises an airbag 1 disposed on a fixing seat, and a connecting pipe is disposed 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 disposed 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 airbag 2, and scale lines are provided on the outside of the airbag 2.

[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 work intensity of the staff, and reduce the wear of the front part 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 the installation efficiency and accuracy;

[0023] 3. The tight clamping of the arc-shaped clamping block on the rail and the tightening effect of the bolts together constitute a stable supporting structure, which effectively prevents the displacement or loosening of the rail due to vibration or external force during use, and enhances the overall stability of the rail 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 handling 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 the middle A area;

[0030] Figure 6 It is a schematic diagram of the plan view structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure 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] Fig. 9 It 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. reset spring; 73. push rod; 8. linkage unit; 81. fixing seat; 9. fitting piece; 91. airbag 1; 92. connecting pipe; 10. observation piece; 101. fixing groove; 102. airbag 2; 11. flexible protective layer; 12. warning coating; 13. scale line. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are 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, see the patent content with announcement number CN211848649U. No further details are given here. The following are also included:

[0039] A plurality of arc-shaped clamping blocks 3, wherein the plurality of arc-shaped clamping blocks 3 are respectively arranged on the track plate body 2, and are used to clamp two sides of the I-shaped rail respectively;

[0040] A plurality of bolts 4, wherein the plurality of bolts 4 are mounted on the track plate body 2, and are used to drive adjacent fasteners to fit the I-shaped rails. The fasteners are of an existing common structure, and the details are shown in the patent publication number CN211848649U, which will not be described in detail here;

[0041] A plurality of controlled extrusion units 5, wherein the plurality of controlled extrusion units 5 are arranged 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, the controlled extrusion unit 5 includes an extrusion spring 52 arranged in the circular notch 51, an extrusion member 6 is arranged in the circular notch 51, and is used to extrude one side of the I-shaped rail, and the track plate body 2 is provided with a control member 7 connected with the bolt 4, and is used to trigger the extrusion spring 52 to work when the bolt 4 is tightened;

[0043] The extrusion member 6 includes a connecting column 61 disposed at the end of the extrusion spring 52, the arc-shaped clamping block 3 is disposed 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 matches the arc-shaped protrusion 62;

[0044] The arc-shaped protrusion 62 and the limiting protrusion 63 are both chamfered, and the chamfered positions of the arc-shaped protrusion 62 and the limiting protrusion 63 are used in coordination, so as 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, the control member 7 includes a return spring 72 arranged in the movable groove 71, a push rod 73 is arranged in the middle of the return spring 72, the push rod 73 movably penetrates 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] 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 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, and a fitting member 9 is disposed on the fixing seat 81 for use 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 setting of the fixing seat 81 can cooperate with the arc-shaped protrusion 62, but will not interfere with the arc-shaped clamping block 3.

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

[0049] The track plate body 2 is provided with a fixing groove 101 , 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 located at 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 top rod 73 in the control member 7, and the top rod 73 compresses the reset 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, so that it moves toward the I-shaped rail and gradually clamps 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 transmitted 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 out of 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] Different from the first embodiment, a flexible protective layer 11 is provided on the outer side of the airbag 1 91 and the airbag 2 102;

[0055] A warning coating 12 is provided on the top of the airbag 102, and a scale line 13 is provided on the outside of the airbag 102. The warning coating 12 is a bright-colored coating for the convenience of observation by the staff. At the same time, the scale line 13 is also for the convenience of observation. When the staff sees the bright-colored coating extending out of the fixed groove 101, they will 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] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present 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), wherein the plurality of arc-shaped clamping blocks (3) are respectively arranged on the track plate body (2) and are used to respectively clamp two sides of the I-shaped steel rail; A plurality of bolts (4), wherein the plurality of bolts (4) are mounted on the track plate body (2) and are 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) are respectively arranged on the track plate body (2). When the controlled extrusion unit (5) is working, adjacent linkage units (8) can be driven to work synchronously, thereby allowing staff to observe the position of the arc-shaped clamping block (3).

2. The prefabricated embedded track slab according to claim 1, characterized in that: The track plate body (2) is provided with a circular notch (51), the controlled extrusion unit (5) comprises an extrusion spring (52) arranged in the circular notch (51), an extrusion member (6) is arranged in the circular notch (51) for extruding one side of the I-shaped rail, and a control member (7) connected to the bolt (4) is arranged on the track plate body (2) for triggering the extrusion spring (52) to work when the bolt (4) is tightened.

3. The prefabricated embedded track slab according to claim 2, characterized in that: The extrusion member (6) comprises 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), an arc-shaped protrusion (62) is arranged on the connecting column (61), and a limiting protrusion (63) matching with the arc-shaped protrusion (62) is arranged in the circular groove (51).

4. The prefabricated embedded track slab according to claim 3, characterized in that: The arc-shaped protrusion (62) and the limiting protrusion (63) are both chamfered.

5. The prefabricated embedded track slab according to claim 4, characterized in that: The track plate body (2) is provided with a movable groove (71), the control member (7) comprises a return spring (72) arranged in the movable groove (71), a push rod (73) is arranged 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 of the push rod (73) can contact the arc-shaped protrusion (62).

6. The prefabricated embedded track slab according to claim 5, characterized in that: The linkage unit (8) comprises a fixing seat (81) arranged in the circular groove (51), and a fitting member (9) is arranged 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 staff member to observe the position of the arc-shaped clamping block (3).

7. The prefabricated embedded track slab according to claim 6, characterized in that: The fitting member (9) comprises an air bag (91) arranged on the fixing seat (81), and a connecting pipe (92) is arranged at one end of the air bag (91) away from the arc-shaped protrusion (62), and the connecting pipe (92) passes through the fixing seat (81) and the track plate body (2).

8. The prefabricated embedded track slab according to claim 7, characterized in that: The track plate body (2) is provided with a fixing groove (101), 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).

9. The prefabricated embedded track slab according to claim 8, 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).

10. The prefabricated embedded track slab according to claim 9, 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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