A needle beam trolley variable diameter plug template system suitable for irregular tunnels

Abstract

The utility model provides a kind of needle beam trolley variable diameter plug template system suitable for irregular tunnel, belong to tunnel construction technical field, comprising: needle beam platform and template installed on needle beam platform, the end of the template is hinged with several metal sheets, the outside of the metal sheet is fixedly installed with wooden board;Setting the blocking ring outside the end of the template, the blocking ring is connected between template or needle beam platform by telescopic stand.This utility model, by the end of the template is hinged with several metal sheets, the outside of the metal sheet is fixedly installed wooden board;Several metal sheets and several wooden boards form circle, it extends towards outside under open state, the gap between the end of template and tunnel inner wall is sealed, closed pouring bin is formed;The outside of wooden board is easily processed into shape, can adapt to irregular shape of tunnel inner wall, and it is massive, easy to install and disassemble, it has the advantages of low cost, simple operation, efficient construction.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a variable diameter plug template system for needle beam trolleys suitable for irregular tunnels. Background Technology

[0002] In tunnel construction, the needle beam trolley is a key piece of equipment for concrete lining.

[0003] The end caps on both ends of the needle beam trolley are used to seal the pouring chamber and prevent concrete leakage. In complex geological conditions, the cross-section of the tunnel after excavation is extremely irregular, with many over-excavation and under-excavation phenomena. Traditional rigid steel end caps cannot adapt to such irregular curved surfaces, making installation difficult and resulting in extremely poor sealing, leading to a large amount of grout leakage. While disposable wooden molds can be made on-site to adapt to the shape, they are wasteful and inefficient. Therefore, this utility model provides a reusable end cap template that is low in cost, easy to operate, and can efficiently adapt to the irregular contours of tunnels. Utility Model Content

[0004] To address the problems of traditional rigid steel plug templates being unable to adapt to irregular curved surfaces, being difficult to install, having extremely poor sealing effects, and resulting in significant grout leakage, and the fact that disposable wooden molds, while capable of being fabricated on-site to fit shapes, are wasteful and inefficient, this utility model provides a variable diameter plug template system for needle beam trolleys suitable for irregular tunnels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A variable-diameter plug formwork system for needle beam trolleys suitable for irregular tunnels includes:

[0007] A needle beam platform and a template installed on the needle beam platform, wherein several metal plates are hinged to the ends of the template, and wooden boards are fixedly installed on the outer sides of the metal plates;

[0008] A retaining ring is provided on the outer side of the end of the template, and the retaining ring is connected to the template or the needle beam platform by a telescopic frame.

[0009] A wedge-shaped block is provided between the retaining ring and the metal plate.

[0010] As a further description of the above technical solution:

[0011] Multiple metal plates and wooden boards are arranged in a circular array, and the shape of the metal plates and wooden boards is set as a fan ring shape.

[0012] As a further description of the above technical solution:

[0013] Both the metal plate and the wooden plate have mounting holes, and the metal plate and the wooden plate are fixedly connected by bolts.

[0014] As a further description of the above technical solution:

[0015] The bottom of the retaining ring is fixedly provided with support feet, and two sets of support feet are symmetrically arranged.

[0016] As a further description of the above technical solution:

[0017] The telescopic frame includes:

[0018] The telescopic component is arranged in a circular array of multiple telescopic components. An inner support frame is fixedly connected to the inner side of the template. The first end of the telescopic component is fixedly connected to the inner support frame, and the second end of the telescopic component is fixedly connected to a connecting frame, which is fixedly connected to a retaining ring.

[0019] As a further description of the above technical solution:

[0020] One side of the wedge-shaped block is provided with an angle.

[0021] The beneficial effects of this utility model are:

[0022] This invention involves hinged metal plates at the ends of a template, with wooden boards fixedly installed on the outer surfaces of the metal plates. The metal and wooden boards form a circle that extends outwards in its open state, sealing the gap between the template ends and the tunnel wall, thus creating a closed pouring chamber. The outer surface of the wooden boards is easily processed and can adapt to irregular shapes of the tunnel wall; moreover, their block shape facilitates easy installation and disassembly (replacement). After the concrete pouring of one section of the tunnel wall is completed, the metal and wooden boards can be rotated and folded inwards. At this time, the template can be moved using a needle beam platform, and the above operation is repeated in the next section for sealing before concrete pouring. In this method, the metal and wooden boards can be reused (sometimes a few wooden boards need to be replaced depending on changes in the tunnel wall). It has the advantages of low cost, simple operation, and high construction efficiency. Attached Figure Description

[0023] To more clearly illustrate a variable-diameter plug template system for needle beam trolleys suitable for irregular tunnels, the following figures are shown;

[0024] Figure 1 This is a perspective view of the present utility model;

[0025] Figure 2 This is a schematic diagram of the end face of the present invention;

[0026] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle.

[0027] The labels in the attached diagram;

[0028] 1. Template; 2. Internal support frame; 3. Telescopic component; 4. Connecting frame; 5. Retaining ring; 6. Support leg; 7. Metal plate; 8. Wooden board; 9. Wedge block; 10. Mounting hole. Detailed Implementation

[0029] Please refer to the attached document. Figures 1-3 This application illustrates a variable-diameter plug template system for irregular tunnels provided by an embodiment of the present application, used in the inner wall pouring process during tunnel construction. It includes: a needle beam platform and a template 1 installed on the needle beam platform, the needle beam platform being used to support and move the template 1.

[0030] In this embodiment, several metal plates 7 are hinged to the end of the template 1, and a wooden board 8 is fixedly installed on the outer side of the metal plates 7.

[0031] A circular structure consisting of several metal plates 7 and several wooden plates 8 extends outwards in its open state to seal the gap between the end of the template 1 and the tunnel inner wall, forming a closed pouring chamber. The outer side of the wooden plates 8 is easy to process and shape, adapting to the irregular shape of the tunnel inner wall. Moreover, its block shape makes it easy to install and disassemble (replace with new ones). After the concrete pouring of one section of the tunnel inner wall is completed, the several metal plates 7 and several wooden plates 8 can be rotated and folded inwards. At this time, the needle beam platform can manipulate the template 1 to move, and the above operation is repeated in the next section to seal the gap before pouring concrete. In the above method, the several metal plates 7 and several wooden plates 8 can be reused (sometimes it is necessary to replace some of the wooden plates 8 depending on the changes in the tunnel inner wall). It has the advantages of low cost, simple operation, and high construction efficiency.

[0032] When extending several metal plates 7 and several wooden plates 8 outwards, horizontal steel bars can be used to restrict the metal plates 7, and additional wire supports can be added near the key positions at the bottom for reinforcement.

[0033] Another way to restrict several metal plates 7 and several wooden plates 8 is to set a retaining ring 5 on the outer side of the end of the template 1. The retaining ring 5 is connected to the template 1 or the needle beam platform by a telescopic frame. A wedge block 9 is set between the retaining ring 5 and the metal plate 7.

[0034] like Figure 1As shown, the telescopic frame is controlled so that the retaining ring 5 is close to the outer side of the circle formed by several metal plates 7 and several wooden plates 8. Then, wedge blocks 9 are driven into the outer side of each metal plate 7 in sequence. This can stably restrict the inward folding of several metal plates 7 and several wooden plates 8. Compared with the first method mentioned above, it does not require driving horizontal steel bars and installing wire supports inside the tunnel. Furthermore, the telescopic frame is controlled to extend outward so that the retaining ring 5 moves away from the circle formed by several metal plates 7 and several wooden plates 8, so that it does not interfere with the inward folding of several metal plates 7 and several wooden plates 8. This can further simplify the construction operation process and improve construction efficiency.

[0035] In one embodiment, multiple metal plates 7 and wooden plates 8 are arranged in a circular array. The shape of the metal plates 7 and wooden plates 8 is set as a fan ring shape. Several metal plates 7 arranged in a circular array can form a ring, and several wooden plates 8 arranged in a circular array can also form a ring. The outer side of the wooden plate 8 is easy to trim and suitable for pressing against the inner wall of the tunnel. Moreover, it can be replaced when it is worn or mismatched.

[0036] In one embodiment, both the metal plate 7 and the wooden plate 8 are provided with mounting holes 10. The metal plate 7 and the wooden plate 8 are fixedly connected by bolts. Generally, two sets of bolts are used to fix the wooden plate 8. In addition, there are usually interlocking parts between the metal plate 7 and the wooden plate 8 to facilitate positioning of the two.

[0037] In actual use, there may be some gaps between adjacent metal plates 7 and adjacent wooden plates 8, which can be sealed with ordinary nylon bags.

[0038] In one embodiment, a support foot 6 is fixedly provided at the bottom of the retaining ring 5. Two sets of support feet 6 are symmetrically arranged. The support feet 6 are used to support the retaining ring 5, thereby reducing the radial force on the telescopic frame. If necessary, a guide structure can also be designed between the retaining ring 5 and the template 1.

[0039] In one embodiment, the telescopic frame includes: a telescopic member 3, multiple telescopic members 3 arranged in a circular array, an inner support frame 2 fixedly connected to the inner side of the template 1, a first end of the telescopic member 3 fixedly connected to the inner support frame 2, a connecting frame 4 fixedly connected to the second end of the telescopic member 3, and a retaining ring 5 fixedly connected to the connecting frame 4.

[0040] The telescopic component 3 can be a hydraulic telescopic component. The telescopic component 3 is arranged in a circular array of five groups. The connecting frame 4 is circular and used to install the telescopic component 3. The second end of the telescopic component 3 is fixedly connected to the connecting frame 4, and the connecting frame 4 is fixedly connected to the retaining ring 5.

[0041] In one embodiment, one side of the wedge block 9 is provided with an angle to facilitate the user to insert the wedge block 9 between the metal plate 7 and the retaining ring 5. The wedge block 9 can be made of wood, which has a certain cushioning effect and is easy to repair.

[0042] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0043] It should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. This invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A variable-diameter plug formwork system for needle beam trolleys suitable for irregular tunnels, comprising: Needle beam platform and template installed on needle beam platform (1); The feature is that a plurality of metal plates (7) are hinged to the end of the template (1), and a wooden board (8) is fixedly installed on the outer side of the metal plates (7); It also includes: a retaining ring (5) disposed on the outer side of the end of the template (1), wherein the retaining ring (5) is connected to the template (1) or the needle beam platform by a telescopic frame; A wedge block (9) is provided between the retaining ring (5) and the metal plate (7).

2. The variable diameter plug template system for needle beam trolleys suitable for irregular tunnels according to claim 1, characterized in that: The metal plate (7) and the wooden plate (8) are arranged in a ring array of multiple units, and the shape of the metal plate (7) and the wooden plate (8) is set as a fan ring shape.

3. A variable-diameter plug template system for needle beam trolleys suitable for irregular tunnels according to claim 2, characterized in that: The metal plate (7) and the wooden plate (8) are both provided with mounting holes (10), and the metal plate (7) and the wooden plate (8) are fixedly connected by bolts.

4. The variable diameter plug template system for needle beam trolleys suitable for irregular tunnels according to claim 1, characterized in that: The bottom of the retaining ring (5) is fixedly provided with a support foot (6), and two sets of support feet (6) are symmetrically arranged.

5. A variable-diameter plug template system for needle beam trolleys suitable for irregular tunnels according to claim 1, characterized in that, The telescopic frame includes: Telescopic component (3), multiple telescopic components (3) are arranged in a circular array, an inner support frame (2) is fixedly connected to the inner side of the template (1), the first end of the telescopic component (3) is fixedly connected to the inner support frame (2), and the second end of the telescopic component (3) is fixedly connected to a connecting frame (4), and the connecting frame (4) is fixedly connected to a retaining ring (5).

6. The variable diameter plug template system for needle beam trolleys suitable for irregular tunnels according to claim 1, characterized in that: One side of the wedge block (9) is provided with an oblique angle.

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