Railway subgrade anti-settlement reinforcing structure

Abstract

The utility model belongs to the technical field of roadbed anti -settlement, concretely is a railway roadbed anti -settlement reinforcing structure, including lateral top -to -top mechanism and setting in the middle part of two side plates top between the top -to -top mechanism, lateral top -to -top mechanism and middle part top -to -top mechanism all include support, be provided with screw rod on the support, both ends of screw rod all are equipped with internal and external screw nut, be provided with spring between internal and external screw nut, internal and external screw nut screw thread cooperation with screw rod, external screw nut and screw rod sliding fit, the outside of internal and external screw nut is equipped with inner rotating sleeve and slides, the inside end of inner rotating sleeve and support rotation cooperation, the outside fixed setting of external screw nut has outer rotating sleeve, just the inside end of outer rotating sleeve is equipped in the outside of inner rotating sleeve. The utility model has the advantages of being capable of effectively preventing the roadbed settlement, and being convenient for overhauling adjustment and replacement.

Description

Technical Field

[0001] This utility model relates to the field of roadbed anti-settlement technology; specifically, this utility model relates to a railway roadbed anti-settlement reinforcement structure. Background Technology

[0002] Railway subgrade settlement refers to the vertical deformation or subsidence of the subgrade beneath the railway tracks under loads (such as train weight and its own gravity) or external environmental factors. Settlement can be uniform or uneven; excessive or uneven settlement directly affects track smoothness and threatens operational safety. Therefore, ensuring that railway subgrades can effectively avoid settlement risks is one of the crucial factors to consider during railway subgrade construction.

[0003] For example, Chinese Patent CN219772561U provides a railway subgrade reinforcement and protection structure, including a railway subgrade, ground, reinforcement seat, compression spring, spring wire rope mechanism and steel bar support mechanism. The steel bar support mechanism is fixedly installed on the ground. The end of the compression spring away from the railway subgrade is installed on the steel bar support mechanism. The end of the compression spring close to the railway subgrade is installed on the two sides of the horizontal part of the reinforcement seat. The two ends of the spring wire rope mechanism are respectively installed on the two horizontal parts of the reinforcement seats of the two reinforcement seats. Compared with the prior art, the advantages and positive effects of this utility model are: (1) When the stiffness of the railway subgrade decreases due to rain, the elastic deformation of the compression spring and the spring wire rope mechanism and the rebound force after the elastic deformation enable the railway subgrade to restore its original height as much as possible after the train leaves. (2) When the stiffness of the railway subgrade is strong in non-rainy weather, the compression spring and the spring wire rope mechanism play a pre-tightening role.

[0004] The aforementioned existing technology can buffer and relieve pressure on the roadbed through its own deformation after being compressed, and can return to its initial state after the pressure disappears, thus preventing roadbed settlement under pressure. However, the existing technology still has certain drawbacks, especially since its compression springs and tension springs are exposed and lack protection, making them highly susceptible to irreversible damage and affecting their effectiveness in preventing roadbed settlement. In addition, the design of the compression and tension springs is relatively simple and crude, making it difficult to directly correct the force applied by the springs to the roadbed in the event of fatigue damage, resulting in poor practicality.

[0005] In view of this, this application further improves upon the above-mentioned prior art and provides a better railway subgrade anti-settlement reinforcement structure. Utility Model Content

[0006] In view of this, the present invention provides a railway subgrade anti-settlement reinforcement structure, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0007] To achieve the aforementioned objectives, this utility model provides a railway subgrade anti-settlement reinforcement structure, comprising a reinforcement base located at the base of the subgrade, side plates abutting against both sides of the subgrade, two inclined tie bars with their tops located outside the side plates and their bottoms extending directly below the subgrade, a lateral abutment mechanism disposed between the tops of the inclined tie bars and the side plates, and a central abutment mechanism disposed between the tops of the two side plates. The bottom ends of the two inclined tie bars are connected. The lateral abutment mechanism provides inward support to the side plates, and the two ends of the central abutment mechanism are connected by steel wires. The top of the rope-pulled side plate includes both the lateral and central abutment mechanisms, each with a support. A screw is threaded through the support, and an inner nut and an outer nut are fitted at both ends of the screw. A spring is provided between the inner and outer nuts. The inner nut is threaded into the screw, and the outer nut is slidably engaged with the screw. An inner rotating sleeve is slidably fitted around the outer side of the inner nut, and the inner end of the inner rotating sleeve is rotatably engaged with the support. An outer rotating sleeve is fixedly fitted around the outer nut, and the inner end of the outer rotating sleeve is fitted over the inner rotating sleeve.

[0008] In the railway subgrade anti-settlement reinforcement structure described above, optionally, a connecting plate is fixedly provided at the top end of the inclined tie bar and the bottom end of the side plate, and the connecting plate is provided with a slot for the insertion of the outer nut of the lateral abutment mechanism.

[0009] In the railway subgrade anti-settlement reinforcement structure described above, optionally, the outer end of the wire rope is fixedly connected to the side plate, the inner end of the wire rope is fixedly provided with a hook, and the outer nut of the middle abutment mechanism is fixedly provided with a hanging ring for connecting the hook.

[0010] In the railway subgrade anti-settlement reinforcement structure described above, optionally, the inner wall surface of the inner rotating sleeve is provided with a hexagonal sleeve groove, and the hexagonal sleeve groove is slidably sleeved on the outside of the inner nut.

[0011] In the railway subgrade anti-settlement reinforcement structure described above, optionally, a spring seat is provided at the outer end of the spring, and the spring seat is rotatably engaged with the outer nut.

[0012] In the aforementioned railway subgrade anti-settlement reinforcement structure, optionally, the screw has a cavity, and two rotating rods arranged vertically within the cavity are rotatably mounted. A threaded block is connected to the outer end of each rotating rod, and the threaded block is radially slidably installed within the screw. An external through hole is provided on the surface of the screw for the threaded block to extend out, and the thread of the threaded block is configured to match an external nut. An internal through hole is provided on the surface of the screw facing the support for the inner end of the rotating rod to extend out. The internal nut presses the inner end of the rotating rod into the internal through hole by moving inward past the internal through hole, and the outer end of the rotating rod pushes the threaded block out of the external through hole to a position where it can engage with the external nut.

[0013] In the railway subgrade anti-settlement reinforcement structure described above, optionally, both sides of the support are provided with circular grooves concentric with the screw. When the inner nut presses the inner end of the rotating rod into the inner through hole, the inner side of the inner nut fits against the inner end face of the circular groove.

[0014] In the aforementioned railway subgrade anti-settlement reinforcement structure, optionally, the threaded block is in the shape of an "I", with the grooves on both sides slidingly engaging with the screw in the radial direction, and the inner surface of the threaded block being provided with a strip groove parallel to the axial direction of the screw, and the outer end of the rotating rod slidingly engaging with the strip groove.

[0015] In the aforementioned railway subgrade anti-settlement reinforcement structure, optionally, the support is in the shape of an inverted "T", and its lower surface can be supported on the ground.

[0016] This utility model's railway subgrade anti-settlement reinforcement structure not only continues the advantages of existing technologies in preventing subgrade settlement through minor deformation after subgrade compression, but also, through the design of inner and outer nuts and screws, allows workers to easily adjust the deformation of the springs providing buffering and restoring forces when fatigue damage occurs, restoring them to their optimal buffering and restoring state. Furthermore, the outer and inner rotating sleeves enclose the springs in a relatively sealed space, improving the spring's protective effect and thus ensuring long-term stable prevention of subgrade settlement. Attached Figure Description

[0017] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the lateral abutment mechanism;

[0020] Figure 3 This utility model Figure 1 Top view;

[0021] Figure 4 for Figure 2 A schematic diagram of the central support mechanism;

[0022] Figure 5 This is a schematic diagram showing the distribution of the central abutment mechanism and the lateral abutment mechanism of this utility model;

[0023] Figure 6 This is a cross-sectional view of the lateral abutment mechanism of this utility model;

[0024] Figure 7 This is a schematic diagram of the connecting plate of this utility model;

[0025] Figure 8 This is a schematic diagram of the inner rotating sleeve of this utility model;

[0026] Figure 9 This is a schematic diagram of the support and screw of this utility model.

[0027] Reference numerals: 1-Reinforced base; 2-Side plate; 3-Diagonal tie bar; 4-Support; 5-Screw; 6-Inner nut; 7-Outer nut; 8-Spring; 9-Inner rotating sleeve; 10-Outer rotating sleeve; 11-Connecting plate; 12-Slot; 13-Hook; 14-Hanging ring; 15-Hexagonal groove; 16-Spring seat; 17-Cavity; 18-Rotating rod; 19-Threaded block; 20-Outer through hole; 21-Inner through hole; 22-Circular groove; 23-Strip groove. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] like Figures 1 to 9 As shown, this utility model provides a railway subgrade anti-settlement reinforcement structure, including a reinforcement base 1 located at the base of the subgrade, side plates 2 abutting against both sides of the subgrade, two inclined tie bars 3 with their tops located outside the side plates 2 and their bottoms extending directly below the subgrade, a lateral abutting mechanism disposed between the tops of the inclined tie bars 3 and the side plates 2, and a central abutting mechanism disposed between the tops of the two side plates 2. The bottoms of the two inclined tie bars 3 are connected, the lateral abutting mechanism provides inward support for the side plates 2, and the two ends of the central abutting mechanism pull the tops of the side plates 2 through steel wire ropes.

[0030] When setting the inclined tie bar 3, first drill an inclined installation hole on the reinforcing base 1, insert the inclined tie bar 3 into the installation hole, and then connect the two inclined tie bars 3 by means of hook 13. Then pour concrete into the installation hole to achieve stable installation of the inclined tie bar 3.

[0031] The central abutment mechanism applies a tensile force towards the center to the tops of the two side plates 2, while the lateral abutment mechanism applies an inward thrust to the bottom of the side plates 2, providing pre-tension to ensure the side plates 2 are tightly pressed against the sides of the roadbed. When the roadbed settles under pressure at the top, the sides of the roadbed expand outward, applying an outward force to the side plates 2, causing a slight outward displacement. Once the pressure at the top of the roadbed disappears, the forces exerted on the side plates 2 by the central and lateral abutment mechanisms restore the roadbed to its initial state. In summary, by utilizing its own deformation to buffer pressure when under load and by recovering its shape after the pressure disappears, the roadbed can prevent settlement under pressure.

[0032] In this embodiment, both the lateral and central abutment mechanisms of the railway subgrade settlement reinforcement structure include a support 4. The support 4 is inverted "T" shape, and its lower surface can support the ground. After installation, the support 4 is in contact with the ground through its lower surface and will not rotate, thus exhibiting strong stability.

[0033] A screw 5 is threaded through the support 4. Specifically, the screw 5 is located in the middle of the vertical part of the support 4, and the screw 5 is fixedly connected to the support 4 so that the screw 5 will not rotate on the support 4. An inner nut 6 and an outer nut 7 are fitted at both ends of the screw 5, and one inner nut 6 and one outer nut 7 are provided on each side of the support 4.

[0034] A spring 8 is provided between the inner nut 6 and the outer nut 7. The spring 8 in the middle abutment mechanism is in a stretched state, providing inward pulling force to the top of the two side plates 2, while the spring 8 in the lateral abutment mechanism is in a compressed state, providing inward pressure to the bottom of the side plates 2. Specifically, a spring seat 16 is provided at the outer end of the spring 8, and the spring seat 16 is rotatably engaged with the outer nut 7.

[0035] The inner nut 6 is threaded into the screw 5. By rotating the inner nut 6, its position on the screw 5 can be adjusted, thereby adjusting the tension of the spring 8 in the central abutment mechanism against the side plate 2, and also adjusting the pressure of the spring 8 on the side plate 2 in the lateral abutment mechanism. When the spring 8 experiences fatigue damage after a period of use, causing changes in its elastic force, the deformation of the spring 8 can be adjusted by rotating the inner nut 6 to ensure the performance of the railway subgrade anti-settlement reinforcement structure.

[0036] The outer nut 7 is in sliding fit with the screw 5. Specifically, the inner diameter of the outer nut 7 is larger than the outer diameter of the screw 5. The inner nut 6 applies a force to the spring 8, and the spring 8 applies a force to the side plate 2 by applying a force to the outer nut 7.

[0037] An inner rotating sleeve 9 is slidably fitted onto the outer side of the inner nut 6, and the inner end of the inner rotating sleeve 9 is rotatably engaged with the support 4. A hexagonal groove 15 is provided on the inner wall of the inner sleeve, and the hexagonal groove 15 is slidably fitted onto the outside of the inner nut 6. The inner nut 6 and the inner rotating sleeve 9 are relatively fixed in the circumferential direction. The rotation of the inner nut 6 can be controlled by rotating the inner sleeve, thereby adjusting the elastic force of the spring 8.

[0038] An outer rotating sleeve 10 is fixedly installed on the outside of the outer nut 7, and the inner end of the outer rotating sleeve 10 is sleeved on the outside of the inner rotating sleeve 9. The cooperation between the inner rotating sleeve 9 and the outer rotating sleeve 10 encloses the spring 8 in a relatively closed space, which can improve the service life of the spring 8.

[0039] In summary, in this embodiment, by setting the inner nut 6, the outer nut 7, and the screw 5, the elastic force of the spring 8 can be adjusted, making it easier to adjust the railway subgrade anti-settlement reinforcement structure and ensuring that it is always in optimal working condition. This also facilitates maintenance work for workers. By setting the inner rotating sleeve 9 and the outer rotating sleeve 10, the spring 8 is enclosed in a relatively closed area, which can improve the service life of the spring 8, especially preventing stones from the subgrade from entering the spring 8, ensuring that the spring 8 can work stably and effectively for a long time.

[0040] A connecting plate 11 is fixedly installed at the top of the inclined tie bar 3 and the bottom of the side plate 2. The connecting plate 11 has a slot 12 for the insertion of the outer nut 7 of the lateral abutment mechanism. The size of the circular slot 22 is larger than the size of the outer nut 7. The connecting plate 11 located at the top of the inclined tie bar 3 can restrict the orientation of the lateral abutment mechanism through the slot 12, ensuring that the lateral abutment mechanism applies a horizontal inward force to the side plate 2.

[0041] The outer end of the wire rope is fixedly connected to the side plate 2, and the inner end of the wire rope is fixedly provided with a hook 13. The outer nut 7 of the middle abutment mechanism is fixedly provided with a hanging ring 14 for connecting the hook 13.

[0042] The screw 5 has a cavity 17, and two rotating rods 18 arranged vertically are rotatably mounted inside the cavity 17. The outer ends of the rotating rods 18 are connected to threaded blocks 19, which are radially slidably installed inside the screw 5. The surface of the screw 5 has an outer through hole 20 for the threaded blocks 19 to extend out, and the threads of the threaded blocks 19 are configured to be compatible with the outer nut 7. The surface of the screw 5 facing the support 4 has an inner through hole 21 for the inner end of the rotating rods 18 to extend out. The inner nut 6 presses the inner end of the rotating rods 18 into the inner through hole 21 by pushing it inward through the inner through hole 21. The outer end of the rotating rods 18 pushes the threaded blocks 19 out of the outer through hole 20 to a position where they can engage with the outer nut 7.

[0043] In this embodiment, for the side-stopping mechanism, rotating the inner nut 6 on one side of the support 4 reduces the pressure of the spring 8 on the outer nut 7. After the inner nut 6 presses the inner end of the rotating rod 18 into the inner through hole 21, the threaded block 19 extends out of the outer through hole 20. At this time, rotating the outer nut 7 inward compresses the spring 8 on one side of the support 4, which can pull the outer nut 7 out of the slot 12, so that both ends of the side-stopping mechanism are separated from the connecting plate 11, and the side-stopping mechanism can be completely disassembled, facilitating the replacement of the side-stopping mechanism.

[0044] It should be noted that when the threaded block 19 protrudes from the outer through hole 20 and the outer nut 7 cannot be directly threaded into the threaded block 19, simply rotate the outer rotating sleeve 10 to adjust the direction of the threads of the outer nut 7, and the outer nut 7 can be threadedly connected to the threaded block 19.

[0045] Both sides of the support 4 are provided with circular grooves 22 concentric with the screw 5. When the inner nut 6 presses the inner end of the rotating rod 18 into the inner through hole 21, the inner side of the inner nut 6 fits against the inner end face of the circular groove 22. The circular groove 22 is the limit position for the inner nut 6 to move inward. An observation hole can be opened on the side wall of the circular groove 22 so that the worker can judge whether the inner nut 6 has moved inward to the limit position, and thus judge whether the threaded block 19 has been pushed out of the outer through hole 20.

[0046] In this embodiment, the threaded block 19 is I-shaped, with its two side grooves slidingly engaging with the screw 5 radially. The inner surface of the threaded block 19 is provided with a strip groove 23 parallel to the axial direction of the screw 5, and the outer end of the rotating rod 18 slides in engagement with the strip groove 23. When the rotating rod 18 rotates, its outer end slides within the strip groove 23, and simultaneously, the threaded block 19 can move radially along the screw 5.

[0047] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A railway subgrade anti-settlement reinforcement structure, comprising a reinforcement base (1) located at the base of the subgrade, side plates (2) abutting against both sides of the subgrade, two inclined tie bars (3) with their top ends located outside the side plates (2) and their bottom ends extending directly below the subgrade, a lateral abutment mechanism disposed between the top ends of the inclined tie bars (3) and the side plates (2), and a central abutment mechanism disposed between the top ends of the two side plates (2), wherein the bottom ends of the two inclined tie bars (3) are connected, the lateral abutment mechanism provides inward support to the side plates (2), and the two ends of the central abutment mechanism pull the top of the side plates (2) through steel wire ropes, characterized in that, Both the lateral abutment mechanism and the central abutment mechanism include a support (4). A screw (5) is threaded through the support (4). An inner nut (6) and an outer nut (7) are fitted at both ends of the screw (5). A spring (8) is provided between the inner nut (6) and the outer nut (7). The inner nut (6) is threadedly engaged with the screw (5). The outer nut (7) is slidably engaged with the screw (5). An inner rotating sleeve (9) is slidably fitted on the outside of the inner nut (6). The inner end of the inner rotating sleeve (9) is rotatably engaged with the support (4). An outer rotating sleeve (10) is fixedly installed on the outside of the outer nut (7), and the inner end of the outer rotating sleeve (10) is fitted on the outside of the inner rotating sleeve (9).

2. The railway subgrade anti-settlement reinforcement structure according to claim 1, characterized in that, The top end of the inclined tie bar (3) and the bottom end of the side plate (2) are both fixedly provided with connecting plates (11), and the connecting plates (11) are provided with slots (12) for inserting the outer nut (7) of the lateral abutment mechanism.

3. The railway subgrade anti-settlement reinforcement structure according to claim 1, characterized in that, The outer end of the wire rope is fixedly connected to the side plate (2), and the inner end of the wire rope is fixedly provided with a hook (13). The outer nut (7) of the middle abutment mechanism is fixedly provided with a hanging ring (14) for connecting the hook (13).

4. The railway subgrade anti-settlement reinforcement structure according to claim 1, characterized in that, The inner wall of the inner rotating sleeve (9) is provided with a hexagonal sleeve groove (15), which is slidably sleeved on the outside of the inner nut (6).

5. A railway subgrade anti-settlement reinforcement structure according to claim 1, characterized in that, The outer end of the spring (8) is provided with a spring seat (16), which is rotatably engaged with the outer nut (7).

6. The railway subgrade anti-settlement reinforcement structure according to claim 1, characterized in that, The screw (5) has a cavity (17) inside, and two rotating rods (18) are rotatably arranged in the cavity (17) in an up-down distribution. The outer end of the rotating rod (18) is connected to a threaded block (19). The threaded block (19) is radially slidably installed in the screw (5). The surface of the screw (5) has an outer through hole (20) for the threaded block (19) to extend out, and the thread of the threaded block (19) is configured to be compatible with the outer nut (7). The surface of the screw (5) has an inner through hole (21) for the inner end of the rotating rod (18) to extend out at the position facing the support (4). The inner nut (6) presses the inner end of the rotating rod (18) into the inner through hole (21) by passing inward through the inner through hole (21). The outer end of the rotating rod (18) pushes the threaded block (19) out of the outer through hole (20) to a position where it can engage with the outer nut (7).

7. A railway subgrade anti-settlement reinforcement structure according to claim 6, characterized in that, Both sides of the support (4) are provided with circular grooves (22) concentric with the screw (5). When the inner nut (6) presses the inner end of the rotating rod (18) into the inner through hole (21), the inner side of the inner nut (6) fits against the inner end face of the circular groove (22).

8. A railway subgrade anti-settlement reinforcement structure according to claim 6, characterized in that, The threaded block (19) is in the shape of an "I" and the grooves on both sides slide in the radial direction with the screw (5). The inner surface of the threaded block (19) is provided with a strip groove (23) parallel to the axial direction of the screw (5). The outer end of the rotating rod (18) slides in the strip groove (23).

9. A railway subgrade anti-settlement reinforcement structure according to claim 1, characterized in that, The support (4) is in the shape of an inverted "T", and its lower surface can be supported on the ground.

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