Modular connection structure of steel mesh for ballastless track

Abstract

This utility model discloses a modular connection structure for steel mesh used in ballastless track, including steel mesh, mounting rods, and mounting frames. Two sets of mounting frames are provided. Two sets of symmetrically distributed first telescopic rods are slidably installed inside the mounting rods. Second telescopic rods are slidably installed inside each of the two sets of first telescopic rods. The ends of the two sets of second telescopic rods furthest from the mounting rods are respectively fixedly connected to one set of mounting frames. Four sets of symmetrically distributed adjusting rods are provided inside the mounting frames. Each of the four sets of adjusting rods has a sleeve threaded onto it. A locking block is fixedly installed at the end of each sleeve furthest from the adjusting rod. The four sets of symmetrically distributed adjusting rods on the mounting frames and the sleeves threaded onto the adjusting rods achieve locking and fixing of a specific mesh area on the steel mesh. With sleeves of different lengths, multiple sets of steel mesh can be stacked and modularly connected. This connection method is faster and more convenient than traditional mechanical connections such as bolts.

Description

Technical Field

[0001] This utility model relates to the field of steel mesh production technology, specifically to a modular connection structure for steel mesh used in ballastless tracks. Background Technology

[0002] Ballastless track steel mesh is a metal product used for the support and reinforcement of high-speed rail tracks. Its main materials include low carbon steel wire, cold-drawn iron wire or stainless steel wire. This steel mesh consists of multiple longitudinal steel wires and a transverse control forming rib. It can be a whole tool product or a piece.

[0003] In existing technologies, the steel mesh for ballastless tracks needs to be transported to the site for installation after production. The existing technology uses mechanical connectors such as clip bolts to fix the steel mesh together, which requires manual tightening and calibration at each point. During disassembly and maintenance, the connectors need to be separated one by one, which further reduces construction efficiency. Moreover, the specifications of the connectors are related to the diameter of the steel bars and the spacing of the mesh. Existing designs are mostly fixed sizes, which are difficult to adapt to different types of mesh. To solve the above problems, we propose a modular connection structure for steel mesh for ballastless tracks. Utility Model Content

[0004] The purpose of this invention is to provide a modular connection structure for steel mesh for ballastless tracks, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular connection structure for steel mesh for ballastless track, comprising steel mesh, mounting rods, and mounting frames. Two sets of mounting frames are provided. Two sets of symmetrically distributed first telescopic rods are slidably installed within the mounting rods. Second telescopic rods are slidably installed within each of the two sets of first telescopic rods. The ends of the two sets of second telescopic rods furthest from the mounting rods are respectively fixedly connected to one set of mounting frames. Four sets of symmetrically distributed adjusting rods are provided within the mounting frames. Each of the four adjusting rods is threaded with a sleeve. A locking block is fixedly installed at the end of each sleeve furthest from the adjusting rod. All four sleeves are movably engaged with the steel mesh through the locking block. Two sets of symmetrically distributed first push rods are slidably installed within the mounting frames. Two sets of symmetrically distributed second push rods are slidably installed within the mounting frames. Two sets of vertically distributed bidirectional screws are rotatably installed within the mounting frames.

[0006] As a further preferred embodiment of this technical solution, the two sets of first push rods and second push rods are vertically distributed, and the four sets of adjusting rods are slidably connected to a corresponding set of first push rods and a corresponding set of second push rods, respectively. The two ends of the two sets of bidirectional lead screws pass through the corresponding two sets of first push rods or the corresponding two sets of second push rods and are threadedly connected to the first push rods and the second push rods, respectively.

[0007] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed ratchet wheels are sleeved on the bidirectional lead screw, and two sets of pawls that mesh with the corresponding ratchet wheels are provided in the mounting frame. Both sets of pawls are rotatably connected to the mounting frame through rotating rods. A first torsion spring is sleeved on the rotating rod, and the two ends of the first torsion spring are fixedly connected to the corresponding pawl and the mounting frame, respectively. Gears are sleeved on both sets of rotating rods, and two sets of racks that mesh with the corresponding gears are slidably installed in the mounting frame.

[0008] As a further preferred embodiment of this technical solution, a movable frame is slidably installed inside the mounting frame. The two ends of the movable frame are respectively fixedly connected to two sets of racks. A positioning block is fixedly installed on the movable frame. A positioning rod corresponding to the positioning block is fixedly installed inside the mounting frame. Two sets of symmetrically distributed positioning frames are sleeved on the positioning rod. Both sets of positioning frames are movably engaged with the corresponding positioning blocks. Two sets of symmetrically distributed second torsion springs are sleeved on the positioning rod. The two ends of the second torsion springs are respectively fixedly connected to the corresponding positioning frame and the positioning rod.

[0009] As a further preferred embodiment of this technical solution, a bidirectional screw is rotatably installed inside the mounting rod, a first bevel gear is sleeved on the bidirectional screw, a second bevel gear is rotatably installed inside the mounting rod, the second bevel gear meshes with the first bevel gear, and a helical tube is rotatably installed inside both sets of the first telescopic rods.

[0010] As a further preferred embodiment of this technical solution, the two ends of the bidirectional screw pass through two corresponding sets of first telescopic rods and are threadedly connected to the two sets of first telescopic rods respectively, and the screw tube passes through the corresponding second telescopic rod and is threadedly connected to the corresponding second telescopic rod respectively.

[0011] As a further preferred embodiment of this technical solution, the bidirectional screw is provided with two sets of symmetrically distributed keyways, and two sets of symmetrically distributed key blocks are fixedly installed in each set of the screw tubes. The two sets of key blocks are arranged correspondingly to the keyways, and the two sets of screw tubes are slidably connected to the bidirectional screw through the key blocks.

[0012] This utility model provides a modular connection structure for steel mesh for ballastless tracks, which has the following advantages:

[0013] (1) This utility model uses four sets of symmetrically distributed adjusting rods on the mounting frame and sleeves threaded on the adjusting rods to fix a certain mesh on the steel mesh. With sleeves of different lengths, multiple sets of steel mesh can be stacked and modularly connected. This connection method is different from the traditional connection of mechanical connectors such as bolts, which is faster and more convenient. The spacing between the four sets of adjusting rods and the length of the screws can be adjusted according to the size and model of the steel mesh to be modularly connected, making the connection structure more widely applicable. At the same time, the flexible adjustment of the spacing between the four sets of adjusting rods and sleeves makes the connection structure easy to disassemble, realizing the connection and disassembly between multiple sets of steel mesh, which is convenient for workers to reconnect and install steel mesh.

[0014] (2) This utility model achieves the adjustment of the distance between two sets of symmetrically distributed mounting frames by rotating the bidirectional screw in the mounting rod in conjunction with the screw tube in the first telescopic rod, thereby making the connection structure applicable to the connection between steel meshes of different lengths. Based on the four sets of adjustable rods on the mounting frame, the application range of the connection structure is further expanded. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the mounting rod of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the adjusting rod and sleeve of this utility model;

[0018] Figure 4 This is a schematic diagram showing the structural separation of the mounting bracket and the adjusting rod of this utility model;

[0019] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point A;

[0020] Figure 6 This is a schematic diagram showing the separation of the ratchet and pawl in this utility model;

[0021] In the diagram: 1. Steel mesh; 2. Mounting rod; 3. First telescopic rod; 4. Second telescopic rod; 5. Double-acting screw; 6. Keyway; 7. First bevel gear; 8. Second bevel gear; 9. Screw tube; 10. Key block; 11. Mounting frame; 12. Adjusting rod; 13. First push rod; 14. Second push rod; 15. Double-acting screw; 16. Sleeve; 17. Locking block; 18. Ratchet; 19. Pawl; 20. Rotating rod; 21. First torsion spring; 22. Gear; 23. Rack; 24. Moving frame; 25. Positioning block; 26. Positioning rod; 27. Positioning frame; 28. Second torsion spring. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1-6As shown, in this embodiment, the modular connection structure of the steel mesh for ballastless track includes a steel mesh 1, mounting rods 2, and mounting frames 11. Two sets of mounting frames 11 are provided. Two sets of symmetrically distributed first telescopic rods 3 are slidably installed inside the mounting rods 2. Second telescopic rods 4 are slidably installed inside each of the two sets of first telescopic rods 3. The ends of the two sets of second telescopic rods 4 away from the mounting rods 2 are respectively fixedly connected to one set of mounting frames 11. Four sets of symmetrically distributed adjusting rods 12 are provided inside the mounting frames 11. Each of the four sets of adjusting rods 12 is threaded with a sleeve 16. A locking block 17 is fixedly installed at the end of the sleeve 16 away from the adjusting rod 12. All four sets of sleeves 16 are movably engaged with the steel mesh 1 through the locking blocks 17. Two sets of symmetrically distributed first push rods are slidably installed inside the mounting frames 11. The mounting bracket 11 has two sets of symmetrically distributed second push rods 14 slidably mounted on rod 13. Two sets of vertically distributed bidirectional lead screws 15 are rotatably mounted within the mounting bracket 11. The two sets of first push rods 13 and second push rods 14 are perpendicularly distributed. Four sets of adjusting rods 12 are slidably connected to a corresponding set of first push rods 13 and a corresponding set of second push rods 14. The two ends of the two sets of bidirectional lead screws 15 pass through the corresponding two sets of first push rods 13 or the corresponding two sets of second push rods 14 and are threadedly connected to the first push rods 13 and second push rods 14 respectively. Two sets of symmetrically distributed ratchet wheels 18 are sleeved on the bidirectional lead screws 15. The mounting bracket 11 has two sets of pawls 19 that mesh with the corresponding ratchet wheels 18. Both sets of pawls 19 are rotatably connected to the mounting bracket 11 via a rotating rod 20. Next, a first torsion spring 21 is sleeved on the rotating rod 20. The two ends of the first torsion spring 21 are fixedly connected to the corresponding pawl 19 and the mounting bracket 11, respectively. Gears 22 are sleeved on both sets of rotating rods 20. Two sets of racks 23 that mesh with the corresponding gears 22 are slidably installed in the mounting bracket 11. A movable bracket 24 is slidably installed in the mounting bracket 11. The two ends of the movable bracket 24 are fixedly connected to the two sets of racks 23, respectively. A positioning block 25 is fixedly installed on the movable bracket 24. A positioning rod 26 corresponding to the positioning block 25 is fixedly installed in the mounting bracket 11. Two sets of symmetrically distributed positioning frames 27 are sleeved on the positioning rod 26. Both sets of positioning frames 27 are movably engaged with the corresponding positioning blocks 25. Two sets of symmetrically distributed second torsion springs 28 are sleeved on the positioning rod 26. The two ends of the torsion spring 28 are fixedly connected to the corresponding positioning frame 27 and positioning rod 26 respectively. During the rotation of the bidirectional lead screw 15 in the mounting frame 11, under the limiting action of the mounting frame 11, it can push the two sets of symmetrically distributed first push rods 13 or the two sets of symmetrically distributed second push rods 14 to slide inward or outward simultaneously, thereby adjusting the distance between the two sets of first push rods 13 or the two sets of second push rods 14. This changes the distance between the four sets of adjusting rods 12, causing the four sets of adjusting rods 12 to drive the corresponding sleeves 16 to fit against the four corners of the steel mesh 1 waiting to be connected. The sleeves 16 are used in conjunction with the bottom locking block 17 to fix the steel mesh 1. Depending on the length of the sleeves 16, multiple sets of steel mesh 1 can be connected at once.The two symmetrically distributed pawls 19 in the mounting bracket 11, in conjunction with the symmetrically distributed ratchet wheels 18 on the corresponding bidirectional screw 15, can limit the position of the bidirectional screw 15. After completing the modular connection of multiple sets of steel mesh 1, the position limitation of the pawls 19 and ratchet wheels 18 prevents the bidirectional screw 15 from rotating, thereby ensuring the firmness of the four sets of adjusting rods 12 and sleeves 16 in fixing the steel mesh 1. When it is necessary to rotate the bidirectional screw 15, the moving bracket 24 can drive the two sets of racks 23 to slide synchronously, which, in conjunction with the gear 22, causes the two sets of rotating rods 20 to drive the corresponding pawls 19 to deflect away from the corresponding ratchet wheels 18, releasing the position limitation of the bidirectional screw 15. At this time, the bidirectional screw 15 can rotate freely, and the moving bracket 24 can fix its position by engaging the positioning block 25 with the positioning bracket 27.

[0024] like Figure 2 and Figure 3 As shown, a bidirectional screw 5 is rotatably installed inside the mounting rod 2. A first bevel gear 7 is sleeved on the bidirectional screw 5. A second bevel gear 8 is rotatably installed inside the mounting rod 2, and the second bevel gear 8 meshes with the first bevel gear 7. A screw tube 9 is rotatably installed inside each of the two sets of first telescopic rods 3. The two ends of the bidirectional screw 5 pass through the two corresponding sets of first telescopic rods 3 and are threadedly connected to the two sets of first telescopic rods 3 respectively. The screw tube 9 passes through the corresponding second telescopic rod 4 and is threadedly connected to the corresponding second telescopic rod 4. Two sets of symmetrically distributed keyways 6 are opened on the bidirectional screw 5. Two sets of symmetrically distributed key blocks 10 are fixedly installed inside each of the two sets of screw tubes 9. The two sets of key blocks 10 are connected to the... The keyway 6 is correspondingly set, and both sets of solenoids 9 are slidably connected to the bidirectional screw 5 through the key block 10. When the motor in the mounting rod 2 drives the second bevel gear 8 to rotate, it cooperates with the first bevel gear 7 to make the bidirectional screw 5 rotate. Then, under the limiting action of the mounting rod 2, the two sets of first telescopic rods 3 slide synchronously inward or outward in the mounting rod 2. As the solenoids 9 slide with the corresponding first telescopic rods 3, they rotate synchronously with the bidirectional screw 5 under the action of the key block 10 and the keyway 6. Therefore, under the position limitation of the first telescopic rods 3, the two sets of second telescopic rods 4 slide synchronously inward or outward, thereby realizing the adjustment of the distance between the two sets of mounting brackets 11.

[0025] This utility model provides a modular connection structure for steel mesh for ballastless tracks. The specific working principle is as follows: During the rotation of the bidirectional lead screw 15 in the mounting frame 11, under the limiting action of the mounting frame 11, it can push two sets of symmetrically distributed first push rods 13 or two sets of symmetrically distributed second push rods 14 to slide synchronously inward or outward, thereby adjusting the distance between the two sets of first push rods 13 or two sets of second push rods 14. This, in turn, changes the distance between the four sets of adjusting rods 12, causing the four sets of adjusting rods 12 to drive the corresponding sleeves 16 and... The four corners of the steel mesh 1 to be connected are fitted together, and the bottom locking block 17 of the sleeve 16 is used to lock and fix the steel mesh 1. According to the length of the sleeve 16, multiple sets of steel mesh 1 can be stacked and connected at one time. The two sets of symmetrically distributed pawls 19 in the mounting frame 11, together with the symmetrically distributed ratchet 18 on the corresponding bidirectional screw 15, can limit the position of the bidirectional screw 15. After the modular connection of multiple sets of steel mesh 1 is completed, the position limit of the pawls 19 and ratchet 18 prevents the bidirectional screw from being connected. The rotation of rod 15 ensures the firmness of the four sets of adjusting rods 12 and sleeves 16 in fixing the steel mesh 1. When it is necessary to rotate the bidirectional lead screw 15, the two sets of racks 23 can be driven to slide synchronously through the moving frame 24. In conjunction with the gear 22, the two sets of rotating rods 20 drive the corresponding pawls 19 to deflect away from the corresponding ratchet 18, thereby releasing the position restriction on the bidirectional lead screw 15. At this time, the bidirectional lead screw 15 can rotate freely. The moving frame 24 can be fixed in position by the positioning frame 27 engaging with the positioning block 25. The motor in the mounting rod 2... During the rotation of the second bevel gear 8, the first bevel gear 7 is engaged with it to rotate the bidirectional screw 5. Under the limiting action of the mounting rod 2, the two sets of first telescopic rods 3 slide synchronously inward or outward in the mounting rod 2. As the screw tube 9 slides with the corresponding first telescopic rod 3, it rotates synchronously with the bidirectional screw 5 under the action of the key block 10 and the keyway 6. Therefore, under the position limitation of the first telescopic rod 3, the two sets of second telescopic rods 4 slide synchronously inward or outward, thereby adjusting the distance between the two sets of mounting brackets 11.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular connection structure for steel mesh for ballastless track, comprising steel mesh (1), mounting rods (2), and mounting frames (11), characterized in that: The mounting brackets (11) are provided in two sets. Two sets of symmetrically distributed first telescopic rods (3) are slidably installed inside the mounting rod (2). A second telescopic rod (4) is slidably installed inside each set of first telescopic rods (3). The ends of the two sets of second telescopic rods (4) away from the mounting rod (2) are respectively fixedly connected to one set of mounting brackets (11). The mounting brackets (11) are provided with four sets of symmetrically distributed adjusting rods (12). Each of the four sets of adjusting rods (12) is threaded with a sleeve. The sleeve (16) has a locking block (17) fixedly installed at one end away from the adjusting rod (12). All four sets of sleeves (16) are movably connected to the steel mesh (1) through the locking block (17). Two sets of symmetrically distributed first push rods (13) are slidably installed in the mounting frame (11). Two sets of symmetrically distributed second push rods (14) are slidably installed in the mounting frame (11). Two sets of vertically distributed bidirectional screws (15) are rotatably installed in the mounting frame (11).

2. The modular connection structure of the steel mesh for ballastless track according to claim 1, characterized in that: The two sets of first push rods (13) and second push rods (14) are vertically distributed. The four sets of adjusting rods (12) are slidably connected to a corresponding set of first push rods (13) and a corresponding set of second push rods (14). The two ends of the two sets of bidirectional lead screws (15) pass through the corresponding two sets of first push rods (13) or the corresponding two sets of second push rods (14) and are threadedly connected to the first push rods (13) and the second push rods (14) respectively.

3. The modular connection structure of the steel mesh for ballastless track according to claim 1, characterized in that: Two sets of symmetrically distributed ratchet wheels (18) are sleeved on the bidirectional lead screw (15). The mounting frame (11) is provided with two sets of pawls (19) that mesh with the corresponding ratchet wheels (18). Both sets of pawls (19) are rotatably connected to the mounting frame (11) through rotating rods (20). A first torsion spring (21) is sleeved on the rotating rod (20). The two ends of the first torsion spring (21) are fixedly connected to the corresponding pawls (19) and the mounting frame (11) respectively. Gears (22) are sleeved on both sets of rotating rods (20). Two sets of racks (23) that mesh with the corresponding gears (22) are slidably installed in the mounting frame (11).

4. The modular connection structure of the steel mesh for ballastless track according to claim 1, characterized in that: A movable frame (24) is slidably installed inside the mounting frame (11). The two ends of the movable frame (24) are fixedly connected to two sets of racks (23). A positioning block (25) is fixedly installed on the movable frame (24). A positioning rod (26) corresponding to the positioning block (25) is fixedly installed inside the mounting frame (11). Two sets of symmetrically distributed positioning frames (27) are sleeved on the positioning rod (26). Both sets of positioning frames (27) are movably engaged with the corresponding positioning block (25). Two sets of symmetrically distributed second torsion springs (28) are sleeved on the positioning rod (26). The two ends of the second torsion springs (28) are fixedly connected to the corresponding positioning frame (27) and the positioning rod (26).

5. The modular connection structure of the steel mesh for ballastless track according to claim 1, characterized in that: A bidirectional screw (5) is rotatably installed inside the mounting rod (2). A first bevel gear (7) is sleeved on the bidirectional screw (5). A second bevel gear (8) is rotatably installed inside the mounting rod (2). The second bevel gear (8) meshes with the first bevel gear (7). A screw tube (9) is rotatably installed inside both sets of the first telescopic rods (3).

6. The modular connection structure of the steel mesh for ballastless track according to claim 5, characterized in that: The two ends of the bidirectional screw (5) pass through two sets of corresponding first telescopic rods (3) and are threaded to the two sets of first telescopic rods (3) respectively. The screw tube (9) passes through the corresponding second telescopic rod (4) and is threaded to the corresponding second telescopic rod (4) respectively.

7. The modular connection structure of the steel mesh for ballastless track according to claim 5, characterized in that: The bidirectional screw (5) has two sets of symmetrically distributed keyways (6), and two sets of symmetrically distributed key blocks (10) are fixedly installed in the two sets of screw tubes (9). The two sets of key blocks (10) are correspondingly arranged with the keyways (6), and the two sets of screw tubes (9) are slidably connected to the bidirectional screw (5) through the key blocks (10).

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