New and old roadbed connecting structure

Abstract

The utility model discloses a new and old subgrade connecting structure which comprises an old subgrade assembly and a new subgrade assembly, the old subgrade assembly and the new subgrade assembly are the same in structural size, the tail end of the old subgrade assembly and the tail end of the new subgrade assembly are each provided with two sets of limiting sliding grooves, the limiting sliding grooves are designed to be of a T-shaped structure, and second-level longitudinal connecting holes are formed in the limiting sliding grooves. Horizontal transverse connecting holes are formed in the old roadbed assembly and the new roadbed assembly, the transverse connecting holes are penetrating type threaded holes, threaded positioning pin shafts matched with the hole diameters and threads of the transverse connecting holes are arranged in the transverse connecting holes, and an inserting sliding plate matched with the limiting sliding groove is fixedly installed below the end, away from the limiting sliding groove, of the old roadbed assembly. The threaded positioning pin shaft can be used as a supporting rod body structure in a new roadbed and an old roadbed, so that the compression resistance degree of the roadbed can be effectively improved, and meanwhile, the balance degree and the goodness of fit between the new roadbed and the old roadbed can be improved.

Description

Technical Field

[0001] This utility model relates to the field of roadbed connection technology, specifically a new and old roadbed connection structure. Background Technology

[0002] The roadbed is the foundation of the track or pavement, and is an earthwork structure formed by excavation or filling. Its main function is to provide the necessary conditions for the laying of the track or pavement and the operation of trains or vehicles, to bear the static and dynamic loads of the track or pavement and the loads on it, and to transfer and diffuse the loads to the depths of the foundation.

[0003] The forms of roadbed include embankments and cuttings. Embankments are formed by filling, while cuttings are formed by excavation. In urban road construction, it is inevitable to widen the road surface. During the process of widening the road surface, the problem of connecting the old and new roadbeds will arise. In order to make the connection between the old and new roadbeds more stable, it is necessary to connect the old and new roadbeds.

[0004] The most common road reconstruction methods using traditional techniques involve lengthening and widening the roadbed, with a straight-section connection structure between the old and new roadbeds. However, the lack of a through-type support structure at the connection point between the old and new roadbeds can easily affect the balance, connection stability, and fit between the old and new roadbeds, thus damaging the overall road structure. Utility Model Content

[0005] The purpose of this invention is to provide a new and old roadbed connection structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a connection structure between old and new roadbeds, comprising an old roadbed component and a new roadbed component. The old and new roadbed components have the same structural dimensions. Both the old and new roadbed components have two sets of limiting grooves at their tail ends. The limiting grooves adopt a "T"-shaped structure design. The limiting grooves have secondary longitudinal connecting holes. The old and new roadbed components have horizontal transverse connecting holes. The transverse connecting holes are through-hole threaded holes. The transverse connecting holes have threaded positioning pins that are compatible with the hole diameter and thread. A plug-in sliding plate that is compatible with the limiting groove is fixedly installed below the end of the old roadbed component away from the limiting groove.

[0007] Preferably, the top of the plug-in slide plate has a hollow structure design, and the hollow groove forms an inner slide groove. A partition is fixedly installed at the center of the inner slide groove, and snap-fit ​​springs are fixedly installed on both sides of the partition.

[0008] Preferably, a snap-fit ​​block is fixedly installed at the top of the snap-fit ​​spring, and the snap-fit ​​block is slidably connected to the inner sliding groove.

[0009] Preferably, the plug-in slide plate has a primary longitudinal connection hole that is adapted to the secondary longitudinal connection hole.

[0010] Preferably, the primary longitudinal connecting hole is a through-hole threaded hole.

[0011] Preferably, the secondary longitudinal connecting hole is provided with a positioning pin that matches its hole diameter and thread.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The new and old roadbed connection structure of this utility model uses a combination of a plug-in sliding plate and a limiting sliding groove to achieve a good initial positioning connection effect when connecting the new and old roadbeds. At the same time, when used with longitudinal holes and positioning screws, it can effectively prevent the new and old roadbeds from moving left and right after being connected, so that the new and old roadbeds have a good fixed and limiting effect.

[0014] Meanwhile, the threaded positioning pins can penetrate both the old and new roadbed structures, connecting them into a whole. The threaded positioning pins also serve as internal support structures for the old and new roadbeds, effectively improving their compressive strength, balance, and fit. When used in conjunction with the positioning pins in the secondary longitudinal connection holes, this provides a dual connection effect, both lateral and longitudinal, effectively enhancing the stability of the connection between the old and new roadbeds. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure between the old and new roadbeds according to an embodiment of the present invention;

[0016] Figure 2 This is a bottom view of the connection structure between the old and new roadbeds according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the plug-in sliding plate structure according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the limiting groove of the old roadbed component and the plug-in sliding plate of the new roadbed component in an embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the threaded positioning pin structure according to an embodiment of the present invention.

[0020] In the diagram: 1. Old roadbed component; 2. New roadbed component; 3. Limiting groove; 4. Insertion slide plate; 5. Snap-fit ​​spring; 6. Inner groove; 7. Snap-fit ​​block; 8. Primary longitudinal connection hole; 9. Secondary longitudinal connection hole; 10. Transverse connection hole; 11. Threaded positioning pin. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-5 This utility model provides an embodiment of a new and old roadbed connection structure, including an old roadbed component 1 and a new roadbed component 2. The old roadbed component 1 and the new roadbed component 2 have the same structural dimensions. The tail ends of the old roadbed component 1 and the new roadbed component 2 are provided with two sets of limiting grooves 3. The limiting grooves 3 adopt a "T"-shaped structure design. The T-shaped structure design has a certain left and right limiting effect after the old and new roadbeds are connected, thereby effectively preventing the structure from falling off to the left or right. The limiting grooves 3 are provided with secondary longitudinal connecting holes 9. In order to facilitate fixing, the secondary longitudinal connecting holes 9 are provided with positioning pins that are compatible with their hole diameter and threads. The positioning pins can be installed in the secondary longitudinal connecting holes 9, thereby effectively preventing left and right movement after the old and new roadbeds are connected, and having a good fixing and limiting effect.

[0025] The old roadbed component 1 and the new roadbed component 2 are provided with horizontal transverse connecting holes 10. The transverse connecting holes 10 are through threaded holes, and threaded positioning pins 11 that are adapted to the hole diameter and thread are provided in the transverse connecting holes 10, as detailed in the attached instruction manual. Figure 5 As shown;

[0026] For details regarding this structural design, please refer to the appendix of the instruction manual. Figure 1 As shown, when the old and new roadbeds are as follows Figure 1 After the connection is shown, the threaded positioning pin 11 can be installed in the transverse connection hole 10 of the new and old roadbeds. The threaded positioning pin 11 can penetrate the two roadbed structures, thus connecting the new and old roadbed structures into a whole. At the same time, the threaded positioning pin 11 can also serve as a support rod structure inside the new and old roadbeds, thereby effectively improving the compressive strength of the roadbeds and improving the balance and fit between the new and old roadbeds. By using it in conjunction with the positioning pin of the secondary longitudinal connection hole 9, the new and old roadbeds can have a dual connection effect in both the transverse and longitudinal directions, effectively improving the connection stability between the new and old roadbeds.

[0027] In order to ensure the initial positioning and connection of the old and new roadbeds, a plug-in sliding plate 4 that is compatible with the limiting sliding groove 3 is fixedly installed below the end of the old roadbed component 1 that is away from the limiting sliding groove 3.

[0028] Among them, the top of the plug-in slide plate 4 has a hollow structure design, and the hollow groove forms an inner slide groove 6. A partition is fixedly installed in the center of the inner slide groove 6, and a snap-fit ​​spring 5 is fixedly installed on both sides of the partition.

[0029] Furthermore, a snap-fit ​​block 7 is fixedly installed on the top of the snap-fit ​​spring 5, and the snap-fit ​​block 7 is slidably connected to the inner slide groove 6;

[0030] With this structural design, when it is necessary to perform preliminary positioning and connection of the new and old roadbeds, the snap-fit ​​block 7 at the front end of the new roadbed can be squeezed inward. When the snap-fit ​​block 7 is squeezed inward, it will retract into the interior of the insertion slide plate 4. At the same time, during the retraction process, it will compress the snap-fit ​​spring 5 at the tail end, thereby keeping the snap-fit ​​spring 5 in a compressed state.

[0031] At this point, manually align the insertion slide plate 4 horizontally with the limiting slide groove 3 of the old roadbed component. Then, manually push the new roadbed component 1 into the limiting slide groove 3. Once the new roadbed component is fully pushed in, its state is as shown in the attached instruction manual. Figure 1 As shown, the compressed snap-fit ​​spring 5 rebounds, thereby ejecting the snap-fit ​​block 7 and inserting it into the groove at the top of the limiting slide 3, thus completing the initial limiting connection between the new and old roadbeds.

[0032] In this embodiment, in order to facilitate the longitudinal connection of the plug-in slide plate 4 to the roadbed components and improve stability, the plug-in slide plate 4 is provided with a primary longitudinal connection hole 8 that is adapted to the secondary longitudinal connection hole 9. The primary longitudinal connection hole 8 is a through threaded hole.

[0033] Working principle: When it is necessary to perform preliminary positioning and connection of the new and old roadbeds, the snap-fit ​​block 7 at the front end of the new roadbed can be pressed inward. When the snap-fit ​​block 7 is pressed inward, it will retract into the interior of the insertion slide plate 4. At the same time, during the retraction process, it will compress the snap-fit ​​spring 5 at the tail end, thereby putting the snap-fit ​​spring 5 in a compressed state.

[0034] At this point, manually align the insertion slide plate 4 horizontally with the limiting slide groove 3 of the old roadbed component. Then, manually push the new roadbed component 1 into the limiting slide groove 3. Once the new roadbed component is fully pushed in, its state is as shown in the attached instruction manual. Figure 1 As shown, at this time, the compressed snap-fit ​​spring 5 rebounds, thereby popping out the snap-fit ​​block 7 and inserting the snap-fit ​​block 7 into the groove at the top of the limiting slide 3, thus completing the initial limiting connection work between the new and old roadbeds.

[0035] When the plug-in slide plate 4 is locked into the limiting slide groove 3 by the locking block 7, the first-level longitudinal connection hole 8 and the second-level longitudinal connection hole 9 of the new and old roadbeds are vertically aligned. At this time, positioning pins can be installed in the two holes. The positioning pins can effectively prevent the new and old roadbeds from moving left and right after being connected. By using the limiting function of the plug-in slide plate 4, the new and old roadbeds have a good fixed limiting effect.

[0036] Then, the threaded positioning pin 11 is installed in the transverse connection hole 10 of the new and old roadbeds. The threaded positioning pin 11 can penetrate the two roadbed structures, thus connecting the new and old roadbed structures into a whole. At the same time, the threaded positioning pin 11 can also serve as a support rod structure inside the new and old roadbeds, thereby effectively improving the compressive strength of the roadbeds and improving the balance and fit between the new and old roadbeds. When used in conjunction with the positioning pin of the secondary longitudinal connection hole 9, the new and old roadbeds can have a dual connection effect in both the transverse and longitudinal directions, effectively improving the connection stability between the new and old roadbeds.

[0037] The groove at the end of the new roadbed can be filled with asphalt, so that the recessed part at the end is level with the upper surface of the new roadbed, ensuring normal use.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A new and old roadbed connection structure, comprising an old roadbed component (1) and a new roadbed component (2), characterized in that, The old roadbed component (1) and the new roadbed component (2) have the same structural dimensions. Both the old roadbed component (1) and the new roadbed component (2) have two sets of limiting grooves (3) at their tail ends. The limiting grooves (3) have secondary longitudinal connecting holes (9). The old roadbed component (1) and the new roadbed component (2) have horizontal transverse connecting holes (10). The transverse connecting holes (10) have threaded positioning pins (11) that are compatible with their diameter and thread. The old roadbed component (1) has a plug-in sliding plate (4) that is compatible with the limiting grooves (3) fixedly installed below the end of the old roadbed component (1) away from the limiting grooves (3).

2. The new and old roadbed connection structure according to claim 1, characterized in that: The top of the plug-in slide plate (4) has a hollow structure design, and the hollow groove forms an inner slide groove (6). A partition is fixedly installed at the center of the inner slide groove (6), and snap-fit ​​springs (5) are fixedly installed on both sides of the partition.

3. The new and old roadbed connection structure according to claim 2, characterized in that: The top of the snap-fit ​​spring (5) is fixedly installed with a snap-fit ​​block (7), and the snap-fit ​​block (7) is slidably connected to the inner slide groove (6).

4. The new and old roadbed connection structure according to claim 1, characterized in that: The plug-in slide plate (4) is provided with a primary longitudinal connection hole (8) that is adapted to the secondary longitudinal connection hole (9).

5. The new and old roadbed connection structure according to claim 4, characterized in that: The primary longitudinal connecting hole (8) is a through threaded hole.

6. The new and old roadbed connection structure according to claim 1, characterized in that: The secondary longitudinal connecting hole (9) is provided with a positioning pin that matches its hole diameter and thread.

7. The new and old roadbed connection structure according to claim 1, characterized in that: The limiting slide (3) adopts a "T" shaped structure design.

8. The new and old roadbed connection structure according to claim 1, characterized in that: The transverse connecting hole (10) is a through threaded hole.

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