Track plate adjustable limiting boss and construction tool thereof

Abstract

The utility model discloses a track plate adjustable limit boss and a construction tool thereof, and relates to the technical field of track traffic, the construction tool is used for pouring the limit boss, the construction tool comprises a tool main body, a closed forming hole matched with the outer contour of an integral limit boss body is formed in the tool main body, and the tool main body is provided with an opening. The tool body comprises a first frame mold and a second frame mold which are connected, an adjusting piece is arranged between the first frame mold and the second frame mold, the adjustable limiting boss comprises an annular telescopic groutable bag arranged on the periphery of a limiting boss body in a sleeving mode, and the telescopic groutable bag is used for filling a gap between the prefabricated track plate and the integral limiting boss. A grouting cavity is formed in the telescopic grouting bag, a grouting / exhaust hole communicated with the grouting cavity is formed in the telescopic grouting bag, close attachment and equal rigidity design between the prefabricated track plate and the limiting boss body can be achieved, the cast-in-place limiting boss design matched with the prefabricated track plate in size can be achieved through the construction tool, and the construction efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to an adjustable limiting boss of a track plate and a construction tool thereof. Background Art

[0002] In the field of rail transit such as railways and subways, track plates are key components for supporting and fixing tracks. Their installation accuracy and stability are directly related to the smoothness and safety of train operation. When prefabricated track plates are used for laying rail transit lines, the track plates need to be horizontally limited by limiting bosses. The limiting tolerance needs to be controlled by reserving expansion joints between the limiting bosses and the track plates. In this limiting method, the size of the limiting bosses is generally controlled by casting bosses with wooden boards. On the one hand, the size of the limiting bosses cast in advance is difficult to control by using wooden boards for molds, and it is difficult to achieve a tight fit between the bosses with wooden boards and the prefabricated track plates laid on site. On the other hand, the unstable size of the limiting bosses will cause uneven spacing between the prefabricated track plates and the limiting bosses, especially when the angles of adjacent prefabricated track plates are different at the curve radius, which makes it easier for the internal and external spacing between the limiting bosses and the prefabricated track plates to be inconsistent.

[0003] To solve this problem, engineers tried to add filling materials between the limit boss and the track plate to eliminate the gap. However, traditional filling materials often lack sufficient elasticity and durability to maintain the stable position of the track plate for a long time. In addition, the construction process of the filling material is relatively complicated, requiring additional construction time and cost. Therefore, it is necessary to develop a new type of limit boss structure that can adapt to the size changes of the track plate while providing sufficient support and stability. At the same time, this limit boss structure also needs to have the characteristics of simple construction, low cost, and good durability to meet the requirements of the rail transit field for the installation accuracy and stability of the track plate. Utility Model Content

[0004] In order to solve the problems raised in the background technology, the utility model discloses an adjustable limit boss of a track plate and a construction tool thereof. The adjustable limit boss in the present solution makes the prefabricated track plate and the limit boss body close together and have equal rigidity, thereby realizing effective filling and fixation of the gap between the track plate and the limit boss. The construction tool can realize the design of a cast-in-place limit boss that matches the size of the prefabricated track plate, thereby improving the construction efficiency.

[0005] The technical solution adopted by the present utility model is as follows: An adjustable limit boss for track slabs, which includes an integral limit boss body arranged between two precast track slabs. A ring-shaped telescopic groutable bladder is sleeved outside the limit boss body. The telescopic groutable bladder is used to fill the gap between the precast track slab and the integral limit boss. The telescopic groutable bladder includes a fixed part and a telescopic part. The fixed part is arranged in the contact area between the precast track slab and the integral limit boss body. The telescopic part is arranged at the gap between the two precast track slabs. The telescopic part is in a folded wave shape. A receiving groove is opened on the limit boss body at the position corresponding to the telescopic part. A grouting chamber is opened inside the telescopic groutable bladder. A grouting / vent hole communicating with the grouting chamber is opened on the telescopic groutable bladder. The thickness values of the bottom and top of the telescopic groutable bladder are smaller than the thickness values of the two side walls. The telescopic groutable bladder is an elastic insulator.

[0006] In order to further optimize the present utility model, the following technical solutions can be preferably selected:

[0007] Preferably, the internal space thickness of the telescopic groutable bladder is 10 - 50 mm, and the wall thickness of the inner and outer sides is 4 - 8 mm.

[0008] Preferably, a plurality of grouting / vent holes are provided, which are distributed at the four corners of the top of the telescopic groutable bladder. Single grouting / vent hole or multiple grouting / vent holes can be grouted simultaneously.

[0009] A construction tooling for an adjustable limit boss of track slabs includes a tooling main body. A closed forming hole matching the outer contour of the integral limit boss body is opened inside the tooling main body. The tooling body includes a connected frame mold one and frame mold two. An adjusting member is arranged between the frame mold one and the frame mold two. The adjusting member is used to adjust the distance between the frame mold one and the frame mold two.

[0010] Preferably, a telescopic connecting belt is arranged at the end connection between the frame mold one and the frame mold two. An adjustable positioning plate is arranged between the frame mold one and the frame mold two along the adjusting direction corresponding to the telescopic connecting belt. A positioning elongated hole is opened on the adjustable positioning plate along the adjusting direction. The positioning elongated hole is an oblong hole.

[0011] Preferably, the frame mold one and the frame mold two are in a "J" shape.

[0012] Preferably, the telescopic connecting belt and the frame mold one and the frame mold two adopt a split or integral design.

[0013] The beneficial effects of the present utility model are:

[0014] (1) Improving the stability of the track plate: By introducing a retractable grouting bag, the limit boss design can adapt to the size changes of the track plate and effectively fill and fix the gap between the prefabricated track plate and the limit boss, thereby improving the stability of the track plate and reducing noise and vibration during train operation.

[0015] (2) Simplify the construction process: The design of the construction tooling makes the construction of the limit boss easier and more efficient. The closed-end forming hole in the tooling body matches the outer contour of the integral limit boss, which can quickly locate and ensure the position and size accuracy of the limit boss, reduce construction errors, and improve construction efficiency.

[0016] (3) Improve the installation accuracy of the track plate: Through the design of the adjustment parts, the distance between frame mold 1 and frame mold 2 can be flexibly adjusted to adapt to the molding of limit bosses of different sizes. This adjustable design significantly improves the installation accuracy of the track plate and can meet the needs of different projects.

[0017] (4) Enhanced structural durability: The telescopic grouting bag is made of high-strength material, has good elasticity and durability, and can maintain the stable position of the track plate for a long time, reduce the frequency of maintenance and replacement, and reduce operating costs. In summary, the close fit and equal stiffness design between the prefabricated track plate and the limiting boss body realizes the effective filling and fixation of the gap between the track plate and the limiting boss. Its construction tooling can realize the cast-in-place limiting boss design that matches the size of the prefabricated track plate, and the construction efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation state of the integral limiting boss in Example 1;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the integral limiting boss in Example 1;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the annular telescopic grouting bag in Example 1;

[0021] Figure 4 It is an internal cross-sectional view of the annular telescopic groutable bag in Example 1;

[0022] Figure 5 Schematic diagram of the construction status of the integral limiting boss construction tooling in Example 2;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the integral limiting boss construction tooling in Example 2;

[0024] Figure 7 A top view of the construction tooling for the integral limiting boss in Example 2;

[0025] Figure 8 Schematic diagram of the construction status of the integral limiting boss construction tooling in Example 3;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the integral limiting boss construction tooling in Example 3;

[0027] Fig.10 A top view of the construction tooling for the integral limiting boss in Example 3;

[0028] Fig.11 Schematic diagram of the installation state of the split limiting boss in Example 4;

[0029] Fig.12 Schematic diagram of the three-dimensional structure of the split limiting boss in Example 4;

[0030] Fig.13 It is a schematic diagram of the three-dimensional structure of the split grouting bag in Example 4;

[0031] Fig.14 is an internal cross-sectional view of the split groutable bag in Example 4;

[0032] Fig.15 Schematic diagram of the construction status of the split-type limiting boss construction tool in Example 5;

[0033] Fig.16 It is a three-dimensional structural schematic diagram of the split type limiting boss construction tooling in Example 5;

[0034] Fig.17 Schematic diagram of the construction status of the split-type limiting boss construction tooling in Example 6;

[0035] Fig.18 It is a three-dimensional structural schematic diagram of the split type limiting boss construction tooling in Example 6;

[0036] Among them, 1-prefabricated track plate; 2-integral limiting boss body; 3-telescopic grouting bag; 4-fixing part; 5-telescopic part; 6-accommodating groove; 7-grouting material; 8-grouting / venting hole; 9-tool body; 10-frame mold one; 11-frame mold two; 12-telescopic connecting belt; 13-adjustable positioning plate; 14-positioning elongated hole; 15-locking bolt; 16-connecting plate; 17-separable grouting bag; 18-L part; 19-R part; 20-split limiting boss body; 21-A mold; 22-B mold; 23-U-shaped part; 24-flat plate part. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0038] Embodiment 1:

[0039] like Figures 1 to 4 As shown, an adjustable limit boss of a track plate comprises an integral limit boss body 2 installed between two prefabricated track plates 1, an annular telescopic groutable bag 3 is sleeved on the periphery of the integral limit boss body 2, the telescopic groutable bag is used to fill the gap between the prefabricated track plate and the integral limit boss, the telescopic groutable bag comprises a fixed part 4 and a telescopic part 5, the fixed part is installed in the contact area between the prefabricated track plate and the integral limit boss, and the telescopic part is installed in the gap between the two prefabricated track plates to meet the requirements of the prefabricated track plates and the integral limit boss in different radius curve sections. The clearance fit of the integral limiting boss, wherein the telescopic portion 5 is a folded wave type, and a receiving groove 6 is provided on the limiting boss body corresponding to the position of the telescopic portion; a grouting chamber is provided in the telescopic grouting bag, and the grouting chamber is filled with grouting material 7, and a grouting / exhaust hole 8 connected to the grouting chamber is provided on the telescopic grouting bag; wherein there are multiple grouting / exhaust holes, and in this embodiment, there are 4 holes, which are distributed at the four corners of the top of the telescopic grouting bag, and a single grouting / exhaust hole or multiple grouting / exhaust holes can be grouted at the same time, which improves the convenience and efficiency of grouting. In terms of material selection, the telescopic grouting bag is an elastic insulator, and the grouting material is a rigid material. The elastic insulator has good elasticity and durability, and can maintain the stable position of the track plate for a long time, reduce the frequency of maintenance and replacement, and reduce operating costs. The internal space thickness of the telescopic grouting bag is 10 to 50 mm, and the inner and outer wall thickness is 4 to 8 mm; the bottom and top thickness of the telescopic grouting bag are smaller than the wall thickness on both sides. The appropriate wall thickness design of the telescopic grouting bag can provide stable rigidity between the prefabricated track plate and the limiting boss.

[0040] Embodiment 2:

[0041] like Figures 5 to 7, for the construction of the integral limit boss body in Embodiment 1, the following tooling is designed: a construction tooling for an adjustable limit boss of a track slab, which includes a tooling main body 9. A closed forming hole matching the outer contour of the integral limit boss body is opened in the tooling main body. The tooling body includes a connected first frame mold 10 and a second frame mold 11. An adjusting member is installed between the first frame mold 10 and the second frame mold 11, and the adjusting member is used to adjust the distance between the first frame mold and the second frame mold. A telescopic connecting belt 12 is installed at the end connection between the first frame mold and the second frame mold. An adjustable positioning plate 13 is installed between the first frame mold and the second frame mold along the adjustment direction corresponding to the position of the telescopic connecting belt. A positioning elongated hole 14 is opened in the adjustable positioning plate 13 along the adjustment direction. The positioning elongated hole is an oblong hole. The positioning elongated hole is horizontally arranged to achieve fine longitudinal distance adjustment of the rail. Specifically, in terms of the connection form, the adjustable positioning plate is connected to the first frame mold and the second frame mold through locking bolts 15 installed at the positioning elongated hole. Among them, the first frame mold and the second frame mold are in a "J" shape. Specifically, the telescopic connecting belt and the first frame mold and the second frame mold enclose a closed forming hole through an L-shaped connecting plate 16. In this embodiment, the first frame mold, the second frame mold, and the L-shaped connecting plate 16 are integrally formed.

[0042] Due to the angle between precast track slabs with different curve radii, it is very difficult to accurately control the size of the limit boss. This construction tooling can realize the casting of an integral limit boss that matches the size of the precast track slab, meet the production of limit bosses between precast track slabs with different curve radii, and can meet a minimum plate joint spacing of 20 - 30 mm and a maximum plate joint spacing of 150 - 200 mm.

[0043] Embodiment 3:

[0044] As Figures 8 to 10 , the difference between this embodiment and Embodiment 2 is that in this embodiment, the construction tooling is detachable. The detachable construction tooling is convenient for disassembly and assembly and convenient for construction. The telescopic connecting belt and the first frame mold and the second frame mold enclose a closed forming hole through an L-shaped connecting plate 16. Among them, the first frame mold, the second frame mold, and the L-shaped connecting plate 16 are all designed separately and are detachably connected by bolts. Other structural designs and functional designs are the same as those in Embodiment 2 and will not be elaborated.

[0045] Embodiment 4:

[0046] As Figures 11 to 14The adjustable limiting boss in this embodiment includes a split limiting boss body 20 installed between two prefabricated track plates 1. A separate groutable bag 17 is filled between the split limiting boss body and the prefabricated track plates 1. The separate groutable bag 17 is composed of two independent L parts 18 and R parts 19. The two parts are of the same structural form. The two parts constitute an integral component and must function as a whole to be effective. The internal space thickness of each part of the separate groutable bag is 10 to 50 mm, the wall thickness on both sides of the inner and outer sides is 4 to 8 mm, the bottom and top thickness is less than the wall thickness on both sides, and two grouting / exhaust holes are provided on the top of each part to ensure smooth grouting. The body of the separate groutable bag is made of elastic insulating material, and the grouting material is a rigid material. Its advantage is that it can provide stable rigidity between the prefabricated track plate and the limiting boss, and save grouting materials.

[0047] Embodiment 5:

[0048] like Figures 15-16 , for the construction of the split limiting boss body in Example 4, the following tooling is designed: the integrated construction tooling is mainly composed of A mold 21, B mold 22, an adjustable positioning plate and locking bolts. Both A and B molds are closed-end designs. The two molds must be used in combination. A single construction tooling can only complete half of the limiting boss. The two molds must be used in combination to achieve the angle positioning that matches the prefabricated track plate. The construction tooling can meet the production of separate limiting bosses between prefabricated track plates with different curve radii. The minimum plate seam spacing that can meet 20 to 30 mm, and the maximum plate seam spacing that can meet 150 to 200 mm, the adjustable positioning plate 13 is provided with a horizontal elongated hole, which can achieve fine longitudinal adjustment of the rail, and the integrated construction tooling structure is relatively simple.

[0049] Embodiment 6:

[0050] like Figures 17-18 , for the adjustable limiting boss in Example 4, the following tooling is designed: The difference between Example 6 and Example 5 is that the construction tooling in this embodiment is detachable, and the detachable construction tooling is designed to be individually detachable. In Example 6, both the A mold 21 and the B mold 22 are composed of a U-shaped part 23 and a flat plate part 24, that is, the matching position of the U-shaped part 23 and the flat plate part 24 can realize the lateral adjustment of the rail. The construction tooling is composed of the U-shaped part of the A mold, the flat plate part of the A mold, the U-shaped part of the B mold, the flat plate part of the B mold, an adjustable positioning plate 13 and a locking bolt. The U-shaped part of the A mold can realize the lateral adjustment of the rail relative to the flat plate part of the A mold, and the U-shaped part of the B mold and the flat plate part of the B mold have the same effect. The detachable construction tooling is easy to disassemble and assemble, and the construction is convenient.

[0051] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0052] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An adjustable limit boss of a track plate, characterized in that: It includes an integral limiting boss body arranged between two precast track slabs. A ring-shaped telescopic groutable bladder is sleeved around the limiting boss body. The telescopic groutable bladder is used to fill the gap between the precast track slab and the integral limiting boss. The telescopic groutable bladder includes a fixed part and a telescopic part. The fixed part is arranged in the contact area between the precast track slab and the integral limiting boss body. The telescopic part is arranged at the gap between the two precast track slabs. The telescopic part is in a folded wave shape. A receiving groove is formed in the limiting boss body at the position corresponding to the telescopic part. A grouting chamber is formed in the telescopic groutable bladder. A grouting / vent hole communicating with the grouting chamber is formed in the telescopic groutable bladder. The thickness values of the bottom and top of the telescopic groutable bladder are smaller than the thickness values of the two side walls. The telescopic groutable bladder is an elastic insulator.

2. The adjustable limiting boss of the track plate according to claim 1, characterized in that: The internal space thickness of the telescopic groutable bladder is 10 - 50 mm, and the wall thickness of the inner and outer sides is 4 - 8 mm.

3. The adjustable limiting boss of the track plate according to claim 1, characterized in that: A plurality of the grouting / vent holes are provided, distributed at the four corners of the top of the telescopic groutable bladder, and single or multiple grouting / vent holes can be used for grouting simultaneously.

4. A construction tool for the adjustable limiting boss of the track plate according to any one of claims 1 to 3, characterized in that: It includes a tooling main body. A closed forming hole matching the outer contour of the integral limiting boss body is formed in the tooling main body. The tooling main body includes a connected frame mold one and frame mold two. An adjusting part is arranged between the frame mold one and the frame mold two. The adjusting part is used to adjust the distance between the frame mold one and the frame mold two.

5. The construction tooling of the adjustable limiting boss of the track plate according to claim 4 is characterized in that: An expandable connecting band is arranged at the end connection between the frame mold one and the frame mold two. An adjustable positioning plate is arranged between the frame mold one and the frame mold two along the adjustment direction corresponding to the expandable connecting band. A positioning elongated hole is formed in the adjustable positioning plate along the adjustment direction. The positioning elongated hole is an oblong hole.

6. The construction tooling of the adjustable limiting boss of the track plate according to claim 5 is characterized in that: The frame mold one and the frame mold two are in a "U" shape.

7. The construction tooling of the adjustable limiting boss of the track plate according to claim 6 is characterized by: The expandable connecting band and the frame mold one and the frame mold two are designed in a split or integral manner.

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