Partially movable inverted arch template and trestle with inverted arch template

Abstract

The present invention discloses a partially movable inverted arch formwork, comprising an intermediate formwork and side formworks arranged on both sides of the intermediate formwork, the side formworks being provided with a first longitudinal track arranged along the depth direction of the inverted arch, and the intermediate formwork being connected with a driving mechanism for driving the intermediate formwork to reciprocate along the first longitudinal track. A trestle comprises a main bridge and the above-mentioned partially movable inverted arch formwork, the main bridge being provided with a second longitudinal track, the second longitudinal track being provided with a moving trolley, and the moving trolley being provided with a lifting driving member connected to the inverted arch formwork. The present invention has the advantages of simple structure, low cost, easy implementation, and convenient construction.

Description

Technical Field

[0001] The invention relates to tunnel construction equipment, in particular to a partially movable inverted arch template and a trestle with the inverted arch template. Background Art

[0002] In recent years, with the continuous development of tunnel construction technology in my country, in order to effectively improve the stability and durability of the invert structure, a new understanding of the requirements for invert construction has been achieved. The formwork for invert construction was first optimized from a simple single-piece small formwork to a trestle-driven integral low side wall invert formwork, and then further optimized to a full-width invert formwork with a full invert section. The tunnel invert layer is constructed with a full-width invert formwork, which increases the formwork cost and further compresses the invert construction space. During pouring construction, the invert layer is below the formwork and cannot be fully vibrated. In actual construction applications, bubbles are easily formed on the surface of the final invert concrete. The existence of the full-width invert formwork also makes it impossible to perform original slurry plastering and timely secondary cleaning on the surface of the invert layer. While the bubbles affect the appearance of the invert layer, they are also accompanied by certain safety risks. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a partially movable inverted arch formwork which has a simple structure, low cost and is convenient for construction.

[0004] The present invention further provides a trestle comprising the above-mentioned partially movable inverted arch formwork.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A partially movable inverted arch formwork comprises a middle formwork and side forms arranged on both sides of the middle formwork, wherein the side forms are provided with a first longitudinal track arranged along the depth direction of the inverted arch, and the middle formwork is connected to a driving mechanism for driving the middle formwork to reciprocate along the first longitudinal track.

[0007] As a further improvement of the above technical solution: the middle template is provided with a guide roller that cooperates with the first longitudinal track.

[0008] As a further improvement of the above technical solution: a working window is opened on the side formwork, and a vibrating component is provided at the working window.

[0009] As a further improvement of the above technical solution: the side formwork is provided with a support rod for preventing floating.

[0010] As a further improvement of the above technical solution: a sealing gasket is provided at the contact point between the middle template and the side template.

[0011] As a further improvement of the above technical solution: the driving mechanism includes a driving sprocket, a driven sprocket, and a chain wound around the driving sprocket and the driven sprocket, and the middle template is provided with a transmission sprocket, and the transmission sprocket is connected to the chain.

[0012] As a further improvement of the above technical solution: the driving mechanism includes a rack arranged on the first longitudinal track and a driving gear arranged on the middle template, and the driving gear is meshed with the rack.

[0013] A trestle comprises a main bridge and the above-mentioned partially movable inverted arch formwork, wherein the main bridge is provided with a second longitudinal track, the second longitudinal track is provided with a moving trolley, and the moving trolley is provided with a lifting drive member connected to the inverted arch formwork.

[0014] As a further improvement of the above technical solution: it also includes a cloth component, and the cloth component moves synchronously with the moving trolley.

[0015] As a further improvement of the above technical solution: the material distribution component is arranged on the movable trolley, and the material distribution component is a chute or a material distribution arm.

[0016] Compared with the prior art, the advantages of the present invention are as follows: the inverted arch formwork disclosed in the present invention is divided into two side formworks and an intermediate formwork located between the two side formworks, a first longitudinal track is arranged on the side formwork, and the intermediate formwork can realize reciprocating movement along the first longitudinal track through a driving mechanism, and when pouring the lower layer of concrete of the inverted arch, the intermediate formwork can be moved to make room, so that the construction is more convenient and it is convenient to vibrate and compact the concrete in time, thereby improving the construction quality, and after pouring the middle layer of concrete, the intermediate formwork is moved again to smooth and shape the accumulated concrete, thereby completing the construction of the inverted arch surface, and the construction is very convenient and fast, and compared with moving the entire inverted arch, only moving the intermediate formwork is easier to implement and has lower cost while ensuring the construction quality of the inverted arch.

[0017] The trestle disclosed in the present invention includes the above-mentioned inverted arch formwork, and thus also has the above-mentioned advantages, and a second longitudinal track is provided on the main bridge, a moving trolley is provided on the second longitudinal track, and a lifting drive component connected to the inverted arch formwork is provided on the moving trolley. After the inverted arch formwork completes the construction of the current construction section, the lifting drive component drives the inverted arch formwork to rise, and then the moving trolley drives the inverted arch formwork to move along the second longitudinal track to the next construction section, and this cycle is repeated. The structure is simple and reliable, and the construction efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the partially movable inverted arch template and the trestle of the present invention.

[0019] Figure 2It is a side structural schematic diagram of the partially movable inverted arch template and trestle of the present invention.

[0020] Figure 3 The diagram is a top view of the structure of the partially movable inverted arch template and the trestle of the present invention.

[0021] Figure 4 The utility model is a schematic diagram of the process of constructing an inverted arch by utilizing the present invention.

[0022] Figure 5 It is the structural schematic diagram of the trestle among the present invention.

[0023] Figure 6 It is a structural schematic diagram of another embodiment of the driving mechanism in the present invention.

[0024] The numbers in the figure represent: 1. middle template; 11. sealing gasket; 12. driving sprocket; 2. side template; 3. first longitudinal track; 4. driving mechanism; 41. driving sprocket; 42. driven sprocket; 43. chain; 44. oil cylinder; 5. guide roller; 6. working window; 61. vibrating component; 7. main bridge; 71. second longitudinal track; 72. moving trolley; 73. lifting drive component; 74. front approach bridge; 75. rear approach bridge; 8. cloth component; 9. support rod. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Figures 1 to 4 An embodiment of a partially movable inverted arch formwork of the present invention is shown. The partially movable inverted arch formwork of this embodiment includes an intermediate formwork 1 and side formworks 2 arranged on both sides of the intermediate formwork 1, the side formworks 2 are provided with a first longitudinal track 3 arranged along the longitudinal depth direction of the inverted arch, and the intermediate formwork 1 is connected to a driving mechanism 4 for driving the intermediate formwork 1 to reciprocate along the first longitudinal track 3 (that is, the first longitudinal track 3 is arranged along the longitudinal depth direction of the tunnel in actual application).

[0027] The inverted arch formwork is divided into two side formworks 2 and a middle formwork 1 located between the two side formworks 2. A first longitudinal track 3 is arranged on the side formworks 2. The middle formwork 1 can realize reciprocating movement along the first longitudinal track 3 through a driving mechanism 4. When pouring the lower layer of concrete of the inverted arch, the middle formwork 1 can be moved to make room, so that the construction is more convenient and the concrete can be vibrated and compacted in time to improve the construction quality. After pouring the middle layer of concrete, the middle formwork 1 is moved again to smooth and shape the accumulated concrete. At the same time, concrete can be poured under the formworks 2 on both sides. The construction is very convenient and fast. Compared with moving the entire inverted arch, only the middle formwork 1 is moved. While ensuring the construction quality of the inverted arch, it is easier to implement and has lower cost.

[0028] Furthermore, in this embodiment, the intermediate template 1 is provided with guide rollers 5 that cooperate with the first longitudinal track 3. As a preferred technical solution, for example, the first longitudinal track 3 adopts an I-beam track, and the guide rollers 5 adopt a T-shaped structure. The first longitudinal track 3 and the guide rollers 5 cooperate on both sides of the intermediate template 1, so that the movement of the intermediate template 1 is more stable and smooth.

[0029] Further, in this embodiment, a working window 6 is provided on the side formwork 2, and a vibrating component 61 is provided at the working window 6. Since the side formwork 2 does not need to be moved, the concrete below the side formwork 2 can be vibrated through the working window 6.

[0030] Further, in this embodiment, a support rod 9 for preventing floating is provided on the side formwork 2. The support rod 9 prevents the inverted arch formwork from floating, thereby ensuring the construction quality of the inverted arch.

[0031] Furthermore, in this embodiment, a sealing gasket 11 is provided at the contact point between the middle formwork 1 and the side formwork 2. The sealing gasket 11 fills the gap between the side formwork 2 and the middle formwork 1 to prevent the concrete slurry from overflowing.

[0032] Furthermore, in this embodiment, the driving mechanism 4 includes a driving sprocket 41, a driven sprocket 42, and a chain 43 wound around the driving sprocket 41 and the driven sprocket 42. The middle template 1 is provided with a transmission sprocket 12, and the transmission sprocket 12 is connected to the chain 43. During operation, the driving sprocket 41 rotates, the driving sprocket 41 drives the chain 43 to move, and the chain 43 drives the middle template 1 to move through the transmission sprocket 12. As the rotation direction of the driving sprocket 41 changes, the moving direction of the middle template 1 also changes. The structure is simple, reliable, and not easy to slip.

[0033] Of course, in other embodiments, the driving mechanism 4 can also include a rack provided on the first longitudinal track 3 and a driving gear provided on the intermediate template 1 (the rack and the driving gear are not shown in the figure), and the driving gear meshes with the rack. When working, the driving gear rotates to drive the intermediate template 1 to move along the first longitudinal track 3. As the driving gear rotates in different directions, the moving direction of the intermediate template 1 also changes. The structure is simple, reliable, and not easy to slip. Or as Figure 6 As shown, the driving mechanism 4 can also use a cylinder 44 to push the middle template 1 to move in steps.

[0034] Figures 1 to 5An embodiment of the trestle of the present invention is shown. The trestle of this embodiment includes a main bridge 7 and the above-mentioned partially movable inverted arch template. The main bridge 7 is provided with a second longitudinal track 71 (that is, the second longitudinal track 71 is arranged along the depth direction of the tunnel in actual application), and a moving trolley 72 is provided on the second longitudinal track 71. The moving trolley 72 is provided with a lifting drive member 73 connected to the inverted arch template. Among them, the lifting drive member 73 is preferably connected to the templates 2 on both sides. Of course, in other embodiments, it can also be connected to the middle template 1; the lifting drive member 73 can be, for example, a hydraulic cylinder, a hoisting component, or a screw nut pair, which can achieve lifting.

[0035] The trestle includes the above-mentioned inverted arch formwork, and thus also has the above-mentioned advantages, and a second longitudinal track 71 is provided on the main bridge 7, a moving trolley 72 is provided on the second longitudinal track 71, and a lifting drive component 73 connected to the inverted arch formwork is provided on the moving trolley 72. After the inverted arch formwork completes the construction of the current construction section, the lifting drive component 73 drives the inverted arch formwork to rise, and then the moving trolley 72 drives the inverted arch formwork to move along the second longitudinal track 71 to the next construction section, and this cycle is repeated. The structure is simple and reliable, and the construction efficiency is improved.

[0036] Furthermore, in this embodiment, a material distribution component 8 is provided on the mobile trolley 72. The material distribution component 8 may be, for example, a chute or a material distribution arm. After the concrete tanker travels onto the trestle, the concrete is transported to the bottom of the invert formwork through the material distribution component 8, thereby improving the construction convenience and efficiency. Of course, in other embodiments, the material distribution component 8 may also move independently, and may be synchronized with the mobile trolley 72.

[0037] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A partially movable invert formwork, Features: The invention comprises a middle formwork (1) and side formworks (2) arranged on both sides of the middle formwork (1), the length of the side formworks (2) being greater than the length of the middle formworks (1), the middle formworks (1) being arranged at the middle part of the inverted arch in the transverse direction, the side formworks (2) being provided with a first longitudinal track (3) arranged along the longitudinal depth direction of the inverted arch, the middle formworks (1) being connected to a driving mechanism (4) for driving the middle formworks (1) to reciprocate along the first longitudinal track (3); when pouring the lower layer of concrete of the inverted arch, the middle formworks (1) are moved to make way, and after pouring the middle layer of concrete of the inverted arch, the middle formworks (1) are moved again to smooth and shape the accumulated concrete, thereby completing the construction of the inverted arch arc surface.

2. The partially movable inverted arch formwork according to claim 1, Features: The intermediate template (1) is provided with a guide roller (5) that cooperates with the first longitudinal track (3).

3. The partially movable inverted arch formwork according to claim 1, Features: A working window (6) is provided on the side formwork (2), and a vibrating component (61) is provided at the working window (6).

4. The partially movable inverted arch formwork according to claim 1, Features: The side formwork (2) is provided with a support rod (9) for preventing floating.

5. The partially movable inverted arch formwork according to claim 1, Features: A sealing gasket (11) is provided at the contact point between the middle template (1) and the side template (2).

6. The partially movable invert formwork according to any one of claims 1 to 5, Features: The driving mechanism (4) comprises a driving sprocket (41), a driven sprocket (42), and a chain (43) wound around the driving sprocket (41) and the driven sprocket (42); a driving sprocket (12) is provided on the intermediate template (1); and the driving sprocket (12) is connected to the chain (43).

7. The partially movable invert formwork according to any one of claims 1 to 5, Features: The driving mechanism (4) comprises a rack provided on the first longitudinal track (3) and a driving gear provided on the middle template (1), the driving gear being meshed with the rack.

8. A trestle bridge, comprising a main bridge (7), Features: It also comprises a partially movable inverted arch formwork according to any one of claims 1 to 7, wherein a second longitudinal track (71) is provided on the main bridge (7), a movable trolley (72) is provided on the second longitudinal track (71), and a lifting drive member (73) connected to the inverted arch formwork is provided on the movable trolley (72).

9. The trestle according to claim 8, Features: It also comprises a cloth component (8), wherein the cloth component (8) moves synchronously with the moving trolley (72).

10. The trestle according to claim 9, Features: The material distributing component (8) is arranged on the movable trolley (72), and the material distributing component (8) is a chute or a material distributing arm.

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