Tunnel concrete pouring device

Abstract

The utility model provides a tunnel concrete pouring device which comprises a main frame capable of advancing in the length direction of a tunnel, a material storage box used for storing concrete slurry is installed on the top of the main frame, and a plurality of first discharging pipes are arranged on the two sides of the material storage box. A plurality of groups of driving mechanisms used for guiding the slurry into the first discharging pipe are arranged at the bottom of the material storage box, and the driving mechanisms can drive the slurry to be guided out of the material storage box at a certain speed; the slurry feeding device is reasonable in design structure and convenient to use, slurry can be driven by the rotating spiral blade to uniformly enter different discharging pipes after being concentrated in the material storage box, the discharging amount of the different discharging pipes is more uniform, and the discharging efficiency is improved. And meanwhile, the problem of unsmooth discharging can be solved by utilizing the pressure provided by the spiral blade to the slurry, and the construction effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction equipment, and in particular relates to a tunnel concrete pouring device. Background Art

[0002] Concrete pouring is a crucial step in tunnel construction, and the method used to pour the secondary lining directly impacts its quality. Currently, the method typically involves pumping concrete to the vault via a delivery pipe, followed by simultaneous, symmetrical pouring of concrete window by window using a chute.

[0003] For example, Chinese utility model patent application number 201821434474.7 discloses a tunnel secondary lining concrete pouring tool that is easy to install and use for pouring. The tool comprises a base, a formwork trolley integral frame vertically connected to the top of the base, a formwork support column connected to the outside of the formwork trolley integral frame, a tunnel secondary lining formwork connected to the other end of the formwork support column, and a left working window and a right working window respectively provided on the inner surface of the tunnel secondary lining formwork. A concrete placement box is provided directly below the formwork trolley integral frame, and the bottom of the concrete placement box is connected to the top of the base. However, this pouring tool still has certain defects in actual use. After the concrete slurry is pumped to the arch position, the slurry flows downward along the chute under the action of its own gravity. Due to the large number of branches distributed from the arch to the surrounding areas, some chutes may have too much or too little slurry, resulting in uneven concrete distribution at various locations in the tunnel. In addition, a single chute may also cause poor discharge due to slurry adhesion, affecting the concrete pouring construction process. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a tunnel concrete pouring device. After the slurry is concentrated in a storage box, the rotating spiral blades can be used to drive the slurry to evenly enter different discharge pipes, which is conducive to more uniform discharge of different discharge pipes. At the same time, the pressure provided by the spiral blades to the slurry can also be used to solve the problem of poor discharge and improve the construction effect.

[0005] The technical solution adopted by the utility model is: a tunnel concrete pouring device, including a main frame that can move along the length direction of the tunnel, a storage box for storing concrete slurry is installed on the top of the main frame, a plurality of first discharge pipes are provided on both sides of the storage box, and a plurality of driving mechanisms for introducing the slurry into the first discharge pipes are provided at the bottom of the storage box, and the driving mechanisms can drive the slurry to be discharged from the storage box at a certain rate.

[0006] The driving mechanism includes a plurality of cylinders arranged below the storage box. The internal cavity of the cylinder is connected to the inner cavity of the storage box, and the cylinder extends to the outside of the storage box. A rotatable spiral blade is installed inside the cylinder. The spiral blade extends from the inside of the storage box toward the cylinder. When the spiral blade rotates, it can drive the slurry inside the storage box to move toward one side of the cylinder.

[0007] The driving mechanism also includes a transmission shaft rotatably mounted inside the cylinder, one end of the transmission shaft is mounted at the middle position of the storage box through a bearing, and the other end is mounted at the end position of the cylinder through a bearing, and the transmission shaft is connected to a motor arranged at the outer end of the cylinder.

[0008] A discharge port is provided below the cylinder, and the first discharge pipe is connected to the discharge port.

[0009] The number of the driving mechanisms is consistent with the number of the first feeding pipes, which are four.

[0010] Hydraulic cylinders are installed on both sides and the top of the main frame, and the ends of the telescopic rods of the hydraulic cylinders are connected to the templates.

[0011] A bifurcation is provided in the middle of the first discharge pipe, and a second discharge pipe is installed at the bifurcation. Valves are provided at positions of the first discharge pipe and the second discharge pipe after the bifurcation.

[0012] A plurality of operating platforms are provided on both sides of the main frame, and walking wheels are installed at the bottom of the main frame.

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

[0014] The utility model has a reasonable design structure and is easy to use. After the slurry is concentrated in the storage box, the rotating spiral blades can be used to drive the slurry to evenly enter different discharge pipes, which is conducive to more uniform discharge of different discharge pipes. At the same time, the pressure provided by the spiral blades on the slurry can also be used to solve the problem of poor discharge and improve the construction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the connection between the material storage box and the first material discharge pipe of the utility model;

[0017] Figure 3 It is a top view of the storage box of the utility model.

[0018] Among them: 1. Main frame; 2. Operating platform; 3. Travel wheel; 4. Hydraulic cylinder; 5. Storage box; 6. First discharge pipe; 7. Valve; 8. Formwork; 9. Second discharge pipe; 10. Cylinder; 11. Drive shaft; 12. Motor; 13. Spiral blade; 14. Feed pipe; 15. Concrete filling area. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] As shown in the figure, a tunnel concrete pouring device includes a main frame 1 that can move along the length direction of the tunnel. A storage box 5 for storing concrete slurry is installed on the top of the main frame 1. The storage box 5 can be used to store a certain amount of slurry as a transition of slurry, which can avoid the consumption of electricity resources caused by the need to constantly start the concrete pump; a plurality of first discharge pipes 6 are provided on both sides of the storage box 5, and a plurality of groups of driving mechanisms for introducing the slurry into the first discharge pipes 6 are provided at the bottom of the storage box 5. The driving mechanism can drive the slurry to be discharged from the storage box 5 at a certain rate. The driving mechanism can make the slurry be discharged outward at a certain speed, thereby avoiding the problems of uneven discharge and poor discharge.

[0021] The driving mechanism includes a plurality of cylinders 10 arranged below the storage box 5. The internal cavity of the cylinder 10 is connected to the internal cavity of the storage box 5, and the cylinder 10 extends to the outside of the storage box 5. A rotatable spiral blade 13 is installed inside the cylinder 10. The spiral blade 13 extends from the inside of the storage box 5 toward the cylinder 10. When the spiral blade 13 rotates, it can drive the slurry inside the storage box 5 to move toward one side of the cylinder 10. With this arrangement, after the spiral blade 13 is started, the spiral blade 13 can be used to discharge the slurry originally in the storage box 5 toward the cylinder 10, and finally discharged from the discharge port below the cylinder 10, replacing the traditional way in which the slurry can only be discharged outward under the action of its own gravity, and has the effect of smoother and more uniform slurry discharge.

[0022] The driving mechanism also includes a transmission shaft 11 rotatably mounted inside the cylinder 10. One end of the transmission shaft 11 is mounted at the middle position of the storage box 5 through a bearing, and the other end is mounted at the end position of the cylinder 10 through a bearing. The transmission shaft 11 is connected to a motor 12 arranged at the outer end of the cylinder 10. The motor 12 is used as a power source to drive the transmission shaft 11 and the spiral blade 13 to rotate, thereby achieving uniform discharge of the slurry.

[0023] The bottom of the cylinder 10 is provided with a discharge port, and the first discharge pipe 6 is connected to the discharge port.

[0024] The number of the driving mechanisms is consistent with that of the first feeding tubes 6 , which are both four. In addition, the number can be adjusted according to the actual length of the main frame 1 or actual needs.

[0025] Hydraulic cylinders 4 are installed on both sides and the top of the main frame 1. The ends of the telescopic rods of the hydraulic cylinders 4 are connected to the templates 8, which are mainly used for supporting the template so that the template 8 remains fixed.

[0026] A fork is provided in the middle of the first discharge pipe 6, and a second discharge pipe 9 is installed at the fork position. The first discharge pipe 6 and the second discharge pipe 9 are both provided with valves 7 at positions after the fork, wherein the valve 7 can be an electronic valve 7, which can be remotely electrically controlled. After the slurry is discharged outward through the second discharge pipe 9 for a certain period of time, the valve 7 can be remotely controlled to close, and then the valve 7 installed on the first discharge pipe 6 can be opened, which has the advantage of convenient operation.

[0027] A plurality of operating platforms 2 are provided on both sides of the main frame 1 , and running wheels 3 are installed at the bottom of the main frame 1 .

[0028] When this tunnel concrete pouring device is working, the slurry can be transported to the storage box 5 through the feed pipe 14 by the concrete mixer truck and the concrete pump. At this time, the motor 12 is started, driving the transmission shaft 11 and the spiral blade 13 to rotate in the storage box 5 and the cylinder 10. The rotation of the spiral blade 13 can transport the slurry in the storage box 5 to one end of the cylinder 10, and introduce it into the first discharge pipe 6 from the discharge port below the cylinder 10. The slurry entering the first discharge pipe 6 then enters the second discharge pipe 9 and is finally discharged from the second discharge pipe 9 and poured in the concrete filling area 15. When the filling reaches a certain amount, the valve 7 at the position of the second discharge pipe 9 is closed, and the valve 7 on the first discharge pipe 6 is opened. At this time, the slurry is discharged from the end of the first discharge pipe 6 to achieve the pouring effect.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tunnel concrete pouring device, characterized in that: It includes a main frame that can move along the length direction of the tunnel, a storage box for storing concrete slurry is installed on the top of the main frame, a plurality of first discharge pipes are arranged on both sides of the storage box, and a plurality of driving mechanisms for introducing the slurry into the first discharge pipes are arranged at the bottom of the storage box, and the driving mechanism can drive the slurry to be discharged from the storage box at a certain rate; the driving mechanism includes a plurality of cylinders arranged below the storage box, the internal cavity of the cylinder is connected with the internal cavity of the storage box, and the cylinder extends to the outside of the storage box, and a rotatable spiral blade is installed inside the cylinder, and the spiral blade extends from the inside of the storage box toward the cylinder. When the spiral blade rotates, it can drive the slurry inside the storage box to move to one side of the cylinder.

2. A tunnel concrete pouring device according to claim 1, characterized in that: The drive mechanism also includes a transmission shaft rotatably mounted inside the cylinder, one end of the transmission shaft is mounted at the middle of the storage box through a bearing, and the other end is mounted at the end of the cylinder through a bearing, and the transmission shaft is connected to a motor arranged at the outer end of the cylinder.

3. A tunnel concrete pouring device according to claim 1, characterized in that: A discharge port is provided below the cylinder, and a first discharge pipe is connected to the discharge port.

4. A tunnel concrete pouring device according to claim 1, characterized in that: The number of the driving mechanisms is consistent with that of the first feeding pipes, which are both four.

5. A tunnel concrete pouring device according to claim 1, characterized in that: Hydraulic cylinders are installed on both sides and the top of the main frame, and the ends of the telescopic rods of the hydraulic cylinders are connected with templates.

6. A tunnel concrete pouring device according to claim 5, characterized in that: A fork is provided in the middle of the first discharge pipe, and a second discharge pipe is installed at the fork. Valves are provided at positions of the first discharge pipe and the second discharge pipe after the fork.

7. A tunnel concrete pouring device according to claim 1, characterized in that: Multiple operating platforms are arranged on both sides of the main frame, and walking wheels are installed at the bottom of the main frame.

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