Roadbed widening spliced roadbed structure
By setting up cross pipes, jacks and limiting mechanisms in the widened splicing structure of the roadbed, the problem of the old roadbed and the new roadbed being prone to cracking and separation during long-term use is solved, and the stable limit of the roadbed connection is achieved.
Patent Information
- Application Number
- CN202421553481.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-03
AI Technical Summary
There is no horizontal limit for the old roadbed and new roadbed in the existing roadbed widened splicing subgrade structure, which causes the new roadbed to move away from the old roadbed during long-term use, resulting in cracking and separation at the connection between the old roadbed and the new roadbed.
By setting up multiple transverse pipes and sockets at the connection between the old roadbed and the new roadbed, and setting up rotary rods, diamond bars, sliders and reinforcement rods inside the transverse pipes, the transmission mechanism of gears and racks and the limiting mechanism of stops and blocks is used to achieve the limit of the transverse pipes, thereby limiting the old roadbed and the new roadbed in a horizontal direction.
Effectively prevent the new roadbed from moving away from the old roadbed, improve the stability of the connection between the new roadbed and the old roadbed, and avoid the occurrence of cracking and separation.
Smart Images
Figure CN222908451U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of road paving, and particularly relates to a subgrade widening and splicing subgrade structure. Background Technique
[0002] The settlement deformation of the original subgrade of the expressway has reached a stable state, while the subgrade filler of the widened part will still produce compression deformation and settlement deformation, which makes the strength difference between the old and new subgrades different and causes differential settlement, and then leads to serious longitudinal cracking and separation of the pavement structure at the joint of the old and new subgrades.
[0003] Among them, the patent publication number CN215714324U discloses a subgrade widening and splicing subgrade structure, including an old subgrade, and a new subgrade is spliced to the old subgrade. The new subgrade includes a plain soil foundation, a gravel cushion layer is laid on the upper surface of the plain soil foundation, a large particle crushed stone cushion layer is laid on the upper surface of the gravel cushion layer, a medium particle crushed stone cushion layer is laid on the upper surface of the large particle crushed stone cushion layer, a fine particle crushed stone cushion layer is laid on the upper surface of the medium particle crushed stone cushion layer, a concrete layer is laid on the upper surface of the fine particle crushed stone cushion layer, an emulsified asphalt sealing layer is laid on the upper surface of the concrete layer, a medium particle asphalt layer is laid on the upper surface of the emulsified asphalt sealing layer, and a fine particle asphalt layer is laid on the upper surface of the medium particle asphalt layer. In this technical solution, there are still defects:
[0004] In this technical solution, there is no horizontal limit for the old subgrade and the new subgrade. Therefore, during long-term use, the new subgrade is prone to move away from the old subgrade, resulting in cracking and separation at the joint of the old subgrade and the new subgrade. Content of the Utility Model
[0005] In view of the problems existing in the above-mentioned existing subgrade widening and splicing subgrade structure, the present utility model is proposed.
[0006] Therefore, the purpose of the present utility model is to provide a subgrade widening and splicing subgrade structure, which solves the problem that in the existing subgrade widening and splicing subgrade structure, there is no horizontal limit for the old subgrade and the new subgrade. Therefore, during long-term use, the new subgrade is prone to move away from the old subgrade, resulting in cracking and separation at the joint of the old subgrade and the new subgrade.
[0007] In order to achieve the above purpose, the present utility model provides the following technical solutions:
[0008] A subgrade widening and splicing subgrade structure, including an old subgrade and a new subgrade. The new subgrade is arranged on one side of the old subgrade. Step grooves are opened on the adjacent sides of the old subgrade and the new subgrade, and the two step grooves are matched. A plurality of horizontal pipes are fixedly arranged on the side of the old subgrade close to the new subgrade. Insertion holes are opened at positions corresponding to the plurality of horizontal pipes on the side of the new subgrade close to the old subgrade. The plurality of horizontal pipes are inserted into the corresponding insertion holes;
[0009] A rotating rod is rotatably arranged inside the horizontal pipe. A diamond-shaped strip is fixedly sleeved on the rod wall of the rotating rod. Sliding plates are abutted on both sides of the diamond-shaped strip. A plurality of reinforcing rods are fixedly arranged on both sides of each sliding plate. Strip-shaped openings are formed on both sides of the horizontal pipe. One ends of the plurality of reinforcing rods all extend to the outside of the strip-shaped openings.
[0010] A groove is formed on the upper surface of the new roadbed. A horizontal plate is arranged inside the groove. A transmission mechanism for driving the plurality of rotating rods to rotate is arranged below the horizontal plate. Cavities are formed at both ends of the horizontal plate. A limiting mechanism for limiting the horizontal plate is arranged inside the cavities.
[0011] Preferably, the transmission mechanism includes gears and racks. The plurality of gears are all fixedly sleeved on one end of the corresponding rotating rod. The plurality of racks are all meshed with the rear sides of the corresponding gears. Vertical rods are fixedly arranged at the upper ends of the plurality of racks. The upper ends of the plurality of vertical rods are all fixedly connected to the horizontal plate.
[0012] Preferably, the limiting mechanism includes a stop block and a clamping block. The stop block is slidably arranged inside the cavity. The clamping block is fixedly arranged on one side of the stop block. One end of the clamping block extends to the outside of the cavity. Card slots are formed on the inner walls of both sides of the groove. The two clamping blocks are respectively clamped with the corresponding card slots.
[0013] Preferably, a spring is fixedly arranged on the side of the stop block away from the clamping block. The other end of the spring is fixedly connected to the inner wall of the cavity, so that the clamping block is more firmly clamped with the corresponding card slot.
[0014] Preferably, the longitudinal cross-sections of the stop block and the cavity are both rectangular, so that the stop block cannot rotate, that is, it can slide stably.
[0015] Preferably, one ends of the plurality of horizontal pipes are anchored to the old roadbed through anchors, so that the horizontal pipes are more firmly connected to the old roadbed.
[0016] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:
[0017] In the present utility model, through inserting the plurality of horizontal pipes into the corresponding jacks, then moving the plurality of racks downward, the racks drive the corresponding gears to rotate, that is, the rotating rods drive the diamond-shaped strips to rotate, so that the two sliding plates can be pushed to both sides, and the plurality of reinforcing rods are moved out of the horizontal pipes and inserted into the new roadbed, that is, the horizontal pipes can be limited, that is, the old roadbed and the new roadbed can be limited in the horizontal direction, and the connection stability between the new roadbed and the old roadbed can be improved. Description of the Drawings
[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.
[0019] Figure 1 It is a structural schematic diagram of a subgrade widening and splicing subgrade structure proposed by the present utility model;
[0020] Figure 2 For Figure 1 It is an enlarged structural schematic diagram of the local part A in
[0021] Figure 3 For Figure 2 It is a three-dimensional view of the rotating plate in
[0022] Explanation of reference numerals:
[0023] 1. Old subgrade; 2. New subgrade; 3. Horizontal pipe; 4. Vertical rod; 5. Horizontal plate; 6. Slide plate; 7. Reinforcement rod; 8. Rhombic strip; 9. Rotating rod; 10. Gear; 11. Rack; 12. Block; 13. Clamping block; 14. Spring. Specific implementation manners
[0024] To enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.
[0025] An embodiment of the present utility model discloses a subgrade widening and splicing subgrade structure.
[0026] Referring to Figures 1 - 3 , a subgrade widening and splicing subgrade structure includes an old subgrade 1 and a new subgrade 2. The new subgrade 2 is arranged on one side of the old subgrade 1. Step grooves are provided on the adjacent sides of the old subgrade 1 and the new subgrade 2, and the two step grooves are matched. A plurality of horizontal pipes 3 are fixedly arranged on the side of the old subgrade 1 close to the new subgrade 2. Insertion holes are provided at the positions corresponding to the plurality of horizontal pipes 3 on the side of the new subgrade 2 close to the old subgrade 1. The plurality of horizontal pipes 3 are all inserted into the corresponding insertion holes. One ends of the plurality of horizontal pipes 3 are all anchored to the old subgrade 1 through anchors, making the connection between the horizontal pipes 3 and the old subgrade 1 more stable;
[0027] A rotating rod 9 is rotatably arranged inside the horizontal pipe 3. A rhombic strip 8 is fixedly sleeved on the rod wall of the rotating rod 9. Slide plates 6 are abutted on both sides of the rhombic strip 8. A plurality of reinforcement rods 7 are fixedly arranged on both sides of the slide plate 6. Strip-shaped openings are provided on both sides of the horizontal pipe 3. One ends of the plurality of reinforcement rods 7 all extend to the outside of the strip-shaped openings;
[0028] A groove is provided on the upper surface of the new subgrade 2, and a horizontal plate 5 is arranged inside the groove.
[0029] Referring to Figures 1 - 3 , a transmission mechanism for driving a plurality of rotating rods 9 to rotate is provided on the lower side of the horizontal plate 5. The transmission mechanism includes a gear 10 and a rack 11. A plurality of gears 10 are fixedly sleeved on one end of the corresponding rotating rod 9. A plurality of racks 11 are meshed and arranged at the rear sides of the corresponding gears 10. Vertical rods 4 are fixedly provided at the upper ends of the plurality of racks 11. The upper ends of the plurality of vertical rods 4 are fixedly connected to the horizontal plate 5.
[0030] Referring to Figures 1 - 3 , cavities are provided at both ends of the horizontal plate 5. A limiting mechanism for limiting the horizontal plate 5 is provided inside the cavities. The limiting mechanism includes a stopper 12 and a clamping block 13. The stopper 12 is slidably arranged inside the cavity. The clamping block 13 is fixedly provided on one side of the stopper 12. One end of the clamping block 13 extends to the outside of the cavity. Card slots are provided on both inner walls of the groove on both sides. Both clamping blocks 13 are clamped with the corresponding card slots.
[0031] Referring to Figures 1 - 3 , a spring 14 is fixedly provided on the side of the stopper 12 away from the clamping block 13. The other end of the spring 14 is fixedly connected to the inner wall of the cavity, making the connection between the clamping block 13 and the card slot more stable. The longitudinal sections of the stopper 12 and the cavity are both rectangular, so that the stopper 12 cannot rotate, that is, it can slide stably.
[0032] In the present utility model, during use, a plurality of horizontal pipes 3 are inserted into the corresponding jacks, and then the plurality of racks 11 are moved downward. The racks 11 drive the corresponding gears 10 to rotate, that is, the rotating rods 9 drive the diamond-shaped strips 8 to rotate, that is, the two sliding plates 6 can be pushed to both sides, so that a plurality of reinforcing rods 7 are moved out of the horizontal pipes 3 and inserted into the new roadbed 2, that is, the horizontal pipes 3 can be limited, that is, the old roadbed 1 and the new roadbed 2 can be limited in the horizontal direction, and the stability of the connection between the new roadbed 2 and the old roadbed 1 can be improved.
[0033] Only some exemplary embodiments of the present utility model are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.
Claims
1. A roadbed widening and splicing roadbed structure, comprising an old roadbed (1) and a new roadbed (2), characterized in that: The new roadbed (2) is arranged on one side of the old roadbed (1), and the sides of the old roadbed (1) and the new roadbed (2) close to each other are provided with step grooves, and the two step grooves match each other; a plurality of transverse pipes (3) are fixedly arranged on the side of the old roadbed (1) close to the new roadbed (2); a plug hole is arranged on the side of the new roadbed (2) close to the old roadbed (1) and at positions corresponding to the plurality of transverse pipes (3), and the plurality of transverse pipes (3) are plugged into the corresponding plug holes; A rotating rod (9) is rotatably arranged inside the transverse tube (3), a rhombus-shaped strip (8) is fixedly sleeved on the rod wall of the rotating rod (9), slide plates (6) are arranged on both sides of the rhombus-shaped strip (8) to abut against each other, a plurality of reinforcing rods (7) are fixedly arranged on both sides of the slide plates (6), strip-shaped openings are opened on both sides of the transverse tube (3), and one end of each of the plurality of reinforcing rods (7) extends to the outside of the strip-shaped opening; The upper surface of the new roadbed (2) is provided with a groove, a transverse plate (5) is arranged inside the groove, a transmission mechanism for driving the plurality of rotating rods (9) to rotate is arranged on the lower side of the transverse plate (5), cavities are provided at both ends of the transverse plate (5), and a limiting mechanism for limiting the position of the transverse plate (5) is arranged inside the cavity.
2. The roadbed widening and splicing roadbed structure according to claim 1 is characterized in that: The transmission mechanism comprises a gear (10) and a rack (11); a plurality of the gears (10) are fixedly sleeved on one end of a corresponding rotating rod (9); a plurality of the racks (11) are meshedly arranged on the rear side of the corresponding gear (10); a vertical rod (4) is fixedly arranged on the upper ends of the plurality of racks (11); and the upper ends of the plurality of vertical rods (4) are fixedly connected to the horizontal plate (5).
3. The roadbed widening and splicing roadbed structure according to claim 1 is characterized in that: The limiting mechanism comprises a stopper (12) and a clamping block (13); the stopper (12) is slidably arranged inside the cavity; the clamping block (13) is fixedly arranged on one side of the stopper (12); one end of the clamping block (13) extends to the outside of the cavity; inner walls on both sides of the groove are provided with clamping grooves; and the two clamping blocks (13) are clamped in the corresponding clamping grooves.
4. The roadbed widening and splicing roadbed structure according to claim 3 is characterized in that: A spring (14) is fixedly arranged on one side of the stopper (12) away from the clamping block (13), and the other end of the spring (14) is fixedly connected to the inner wall of the cavity.
5. The roadbed widening and splicing roadbed structure according to claim 3 is characterized in that: The longitudinal sections of the stopper (12) and the cavity are both rectangular.
6. The roadbed widening and splicing roadbed structure according to claim 1 is characterized in that: One end of each of the plurality of transverse pipes (3) is anchored to the old roadbed (1) via an anchor.