Large-diameter tunnel steel pipe lining concrete pouring device

Abstract

The utility model discloses a large-diameter tunnel steel pipe lining concrete pouring device which comprises a foundation support, a cushion supporting support and a chute, the foundation support is formed by fixedly connecting a transverse component and a vertical component, the bottom of the foundation support is supported on a working well bottom plate, and the top of the foundation support is erected on the upper side of a lining steel pipe; the cushion support comprises side seats, a base and a supporting steel pipe, the side seats are symmetrically arranged on the upper surface of the lining steel pipe and fixedly connected with the transverse component on the same side, the base is an arc-shaped component and tightly attached to the outer surface of the lining steel pipe, penetrating holes are symmetrically formed between the side seats, and the supporting steel pipe penetrates into the penetrating holes to be erected between the side seats; a supporting plate clamped on the outer surface of the supporting steel pipe is fixedly arranged on the bottom surface of the chute, and the chute is downwards inclined from one side of the supporting steel pipe. The utility model aims to provide the tunnel steel pipe lining concrete pouring device which can reduce the construction difficulty and the input cost, ensure the safety of concrete pouring work and quickly advance.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy project construction, in particular to a large-diameter tunnel steel pipe lining concrete pouring device. Background Art

[0002] In recent years, there are more and more water conservancy projects, especially in the process of water diversion tunnel construction, many large-section tunnels need to be built to meet the water diversion requirements of the project. In order to speed up the construction progress, steel pipes and self-compacting concrete are often used for tunnel lining, which is equivalent to filling a kind of self-compacting concrete between the steel pipe and the shield segment after the tunnel shield is penetrated. No vibration is required, and it can be filled and compacted freely. The characteristic of this lining structure is that it belongs to a closed space. The net distance between the steel pipe and the segment is only 265mm, and the end of the tunnel needs to be blocked with a plugging plate to prevent concrete from overflowing. If a conventional pump truck is used for pouring, the construction is difficult, time-consuming, and costly. Therefore, there is an urgent need for a tunnel steel pipe lining concrete pouring device that can reduce the construction difficulty and investment cost and ensure the safety and rapid advancement of concrete pouring work. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and to provide a tunnel steel pipe lining concrete pouring device which can reduce the construction difficulty and investment cost and ensure the safety and rapid advancement of concrete pouring work.

[0004] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0005] A large-diameter tunnel steel pipe lining concrete pouring device comprises a foundation support, a cushion support and a chute, wherein the foundation support is formed by fixedly connecting transverse members and vertical members, the bottom of which is supported on the bottom plate of the working shaft, and the top is mounted on the upper side of the lining steel pipe; the cushion support comprises a side seat, a base and a supporting steel pipe, the side seats are symmetrically arranged on the upper surface of the lining steel pipe and fixedly connected to the transverse member on the same side, the base is an arc-shaped member and fits tightly to the outer surface of the lining steel pipe, the side seats are symmetrically provided with through holes, and the supporting steel pipes are inserted into each through hole and mounted between the side seats; the bottom surface of the chute is fixedly provided with a support plate stuck on the outer surface of the supporting steel pipe, and the chute is arranged to be inclined downward from one side of the supporting steel pipe.

[0006] Furthermore, the through hole is a long hole or an elliptical hole with a diameter larger than the outer diameter of the supporting steel pipe, and each side seat is vertically opened with a positioning hole within the height range of the through hole at right angles to the side of the through hole, and a pin that is stuck in the bottom of the supporting steel pipe is inserted into the same group of positioning holes.

[0007] Furthermore, the side ends of the supporting steel pipes are each provided with a sealing steel plate.

[0008] Furthermore, a diagonal brace is fixedly provided between the supporting steel pipe and the transverse member located at the lower side of the chute.

[0009] Furthermore, the side seat and the chute are both made of channel steel.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model has a simple structure and can replace conventional pump trucks for pouring. The foundation bracket and the cushion support bracket are jointly supported on the bottom plate of the working well and the lining steel pipe. The high end of the chute is supported on the supporting steel pipe, and the low end of the chute faces the annular sealing plate of the tunnel for pouring concrete. The inclination angle of the chute can be changed by adjusting the positioning hole of the side seat and the combination of the latch to achieve the purpose of controlling the concrete pouring speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the side seat in the utility model.

[0014] Reference numerals:

[0015] 1-foundation support, 2-cushion support, 3-chute, 4-working well bottom plate, 5-lined steel pipe, 21-side seat, 22-base, 23-positioning hole, 24-through hole, 25-support steel pipe, 26-pin, 27-diagonal brace, 31-support plate. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0017] like Figure 1 and Figure 2 As shown, a large-diameter tunnel steel pipe lining concrete pouring device includes a foundation support 1, a cushion support support 2 and a chute 3. The foundation support 1 is formed by fixedly connecting horizontal members and vertical members, and its bottom is supported on the working shaft bottom plate 4, and the top is mounted on the upper side of the lining steel pipe 5; the cushion support support 2 includes a side seat 21, a base 22 and a supporting steel pipe 25. The side seats 21 are symmetrically arranged on the upper surface of the lining steel pipe 5 and fixedly connected to the horizontal member on the same side. The base 22 is an arc-shaped member and fits tightly to the outer surface of the lining steel pipe 5. The side seats 21 are symmetrically provided with through holes 24, and the supporting steel pipe 25 is inserted into each through hole 24 and mounted between the side seats 21; the bottom surface of the chute 3 is fixedly provided with a support plate 31 stuck on the outer surface of the supporting steel pipe 25, and the chute 3 is arranged to be tilted downward from one side of the supporting steel pipe 25.

[0018] The through hole 24 is a long hole or an elliptical hole with a hole diameter larger than the outer diameter of the supporting steel pipe 25. Each side seat 21 is provided with a positioning hole 23 located within the height range of the through hole 24 in a vertical direction on the side perpendicular to the through hole 24. A latch 26 is inserted into the same group of positioning holes 23 and is stuck in the bottom of the supporting steel pipe 25. The height matching of the positioning holes 23 and the latch 26 on the side seat 21 can change the setting height of the supporting steel pipe 25, thereby changing the inclination angle of the chute 3, so as to achieve the purpose of controlling the concrete pouring speed. The through hole 24 is a long hole or an elliptical hole, which is convenient for the supporting steel pipe 25 to change its position in the through hole 24.

[0019] Wherein, the side ends of the supporting steel pipes 25 are provided with blocking steel plates to prevent the supporting steel pipes 25 from falling during construction.

[0020] A diagonal brace 27 is fixedly provided between the supporting steel pipe 25 and the transverse member located at the lower side of the chute 3 , and the diagonal brace 27 can strengthen the stability between the supporting steel pipe 25 and the basic support 1 to increase the stability of the chute 3 .

[0021] Among them, the side seat 21 and the chute 3 are both composed of channel steel, which has a web and a flange plate. The web can be used to open a perforation 24, and the flange plate can be used to cooperate in opening a positioning hole 23. When the chute 3 is poured with concrete, the flange plates on both sides of the channel steel can prevent the concrete from overflowing. Directly using the channel steel saves the prefabrication work of the side seat 21 and the chute 3.

[0022] The utility model has a simple structure and can replace conventional pump truck casting, wherein the foundation bracket 1 and the cushion support bracket 2 are jointly supported on the working well bottom plate 4 and the lining steel pipe 5, and the arc radius of the base 22 is the same as the radius of the lining steel pipe 5 to ensure that the base 22 fits tightly with the top arc surface of the lining steel pipe 5 to achieve a stable effect. The high end of the chute 3 is supported on the supporting steel pipe 25, and the low end of the chute 3 faces the annular sealing plate of the tunnel for pouring concrete. The inclination angle of the chute 3 can be changed by adjusting the positioning hole 23 of the side seat 21 and the combination of the pin 26. As the casting height changes continuously, the casting method also changes at any time. When it is necessary to reduce the casting speed, the plug-in position of the pin 26 on the positioning hole 23 is reduced, and the slope of the chute 3 becomes slower, so as to achieve the purpose of controlling the concrete casting speed.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large diameter tunnel steel pipe lining concrete pouring device, characterized in that: The invention comprises a basic support (1), a cushion support (2) and a chute (3). The basic support (1) is formed by fixedly connecting a transverse member and a vertical member, and its bottom is supported on the bottom plate (4) of the working well, and its top is supported on the upper side of the lining steel pipe (5); the cushion support (2) comprises a side seat (21), a base (22) and a supporting steel pipe (25); the side seat (21) is symmetrically arranged on the upper surface of the lining steel pipe (5) and fixedly connected to the transverse member on the same side; the base (22) is an arc-shaped member and is tightly fitted with the outer surface of the lining steel pipe (5); through holes (24) are symmetrically opened between the side seats (21), and the supporting steel pipe (25) is inserted into each through hole (24) and is arranged between the side seats (21); a support plate (31) is fixedly arranged on the bottom surface of the chute (3) and is clamped on the outer surface of the supporting steel pipe (25); the chute (3) is arranged to be tilted downward from one side of the supporting steel pipe (25).

2. A large diameter tunnel steel pipe lining concrete pouring device according to claim 1, characterized in that: The through hole (24) is a long hole or an elliptical hole with a hole diameter larger than the outer diameter of the supporting steel pipe (25). Each side seat (21) is vertically provided with a positioning hole (23) located within the height range of the through hole (24) at a side perpendicular to the through hole (24). A latch (26) is inserted into the same group of positioning holes (23) and is clamped in the bottom of the supporting steel pipe (25).

3. A large diameter tunnel steel pipe lining concrete pouring device according to claim 2, characterized in that: The side ends of the supporting steel pipe (25) are each provided with a blocking steel plate.

4. A large diameter tunnel steel pipe lining concrete pouring device according to claim 1, characterized in that: A diagonal brace (27) is fixedly arranged between the supporting steel pipe (25) and a transverse member located at the lower side of the chute (3).

5. A large diameter tunnel steel pipe lining concrete pouring device according to claim 1, characterized in that: The side seat (21) and the chute (3) are both made of channel steel.

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