City gate opening type tunnel primary lining concrete transportation device

Abstract

A city gate opening type tunnel primary lining concrete conveying device is characterized in that a concrete bin is arranged on a frame, a concrete conveying mechanism is arranged at the bottom of the concrete bin, elastic auxiliary wheels are arranged on the outer walls of the left side and the right side of the frame, and a left walking mechanism and a right walking mechanism which are the same in structure are arranged at the bottom of the frame; according to the left walking mechanism, lifting supporting columns are arranged at the front and rear ends of the upper surface of a steel beam, a front walking wheel and a rear walking wheel are arranged at the front and rear ends of the lower surface of the steel beam respectively, a driving motor is arranged on the steel beam, and the power end of the driving motor is connected with a wheel shaft of the rear walking wheel through a belt transmission mechanism. The belt transmission mechanism is driven by the driving motor to drive the conveying device to walk, the frame is controlled to ascend and descend through the lifting supporting column, obstacles in a hole can be well passed, a discharging opening of the concrete conveying mechanism can be aligned with a feeding opening of an injection machine for filling, conveying, obstacle passing and filling are integrated, manpower is saved, and the working efficiency is improved. And the construction efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy construction conveying equipment, and particularly relates to a primary lining concrete transportation device for a portal-type tunnel. Background Art

[0002] The water conveyance tunnel consists of three parts: an inlet section, a tunnel section, and an outlet section. Among them, the tunnel section of the tunnel is of portal type, with an excavation cross-section size of 3.28m×3.49m. The tunnel section of the tunnel is constructed by means of adit excavation. For each layer of excavation, a layer of support is carried out. The support adopts the form of anchor rods and shotcrete with wire mesh. Shotcrete is prepared by pre-mixing cement, sand, gravel, water, and a certain amount of admixtures, loading them into a shotcreting machine, and using high-pressure air to send them to the nozzle, where they are mixed with a quick-setting agent and then sprayed onto the surface of the rock or concrete at a very high speed to form.

[0003] Due to the small space in the water conveyance tunnel, large concrete transport vehicles cannot enter the tunnel. At present, the transportation method of concrete spraying material is to set a concrete pump at the tunnel entrance, connect a conveying pipeline to the concrete pump, erect a conveying pipeline support in the tunnel, set the conveying pipeline on the conveying pipeline support to transport the concrete into the tunnel, and then use a material transport vehicle to transport the material to the working face, and manually fill the material into the shotcreting machine for shotcreting operation. At present, the existing concrete spraying material transportation method has problems of relatively high manpower consumption and serious waste of floor spreading material. Moreover, due to the small space in the tunnel and the fact that the conveying pipeline support occupies a certain space, the cross-construction interference is large, affecting the construction efficiency of shotcreting operations on multiple working faces simultaneously, resulting in a relatively low working efficiency. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a primary lining concrete transportation device for a portal-type tunnel with reasonable design, simple operation, labor saving, and high construction efficiency.

[0005] The technical solution for solving the above technical problem is: a primary lining concrete transportation device for a portal-type tunnel, in which a concrete bin is arranged on a vehicle frame, a concrete conveying mechanism is arranged at the bottom of the concrete bin, elastic auxiliary wheels are arranged on the outer walls of the left and right sides of the vehicle frame, and left and right walking mechanisms with the same structure are arranged at the bottom of the vehicle frame. The left walking mechanism has lifting support columns arranged at the front and rear ends on the upper surface of a steel cross beam, and front walking wheels and rear walking wheels are respectively arranged at the front and rear ends on the lower surface. A driving motor is arranged on the steel cross beam, and the power end of the driving motor is connected to the wheel axle of the rear walking wheel through a belt transmission mechanism.

[0006] As a preferred technical solution, the concrete conveying mechanism is as follows: a screw conveyor is arranged inside the concrete conveying pipe, the concrete conveying pipe is communicated with the concrete silo, one end of the concrete conveying pipe is a feeding port and the other end is closed, and a motor is arranged on the screw conveyor at the closed end of the concrete conveying pipe.

[0007] As a preferred technical solution, a vibrator is arranged on the wall of the concrete silo.

[0008] As a preferred technical solution, the elastic auxiliary wheel is as follows: one end of a support rod is connected to the vehicle frame, an installation hole is axially machined at the other end of the support rod, a spring and a connecting rod are arranged in the installation hole, and an auxiliary wheel is connected to the connecting rod.

[0009] As a preferred technical solution, the lifting support column is as follows: a hollow jack is arranged on the support column, the support column is fixedly arranged on the steel cross beam, and the cylinder body of the hollow jack is fixedly connected to the vehicle frame.

[0010] The beneficial effects of the present utility model are as follows:

[0011] The present utility model drives the transport device to travel through the belt transmission mechanism driven by the driving motor, controls the lifting of the vehicle frame through the lifting support column, can well pass through the obstacles in the tunnel, and can align the feeding port of the concrete conveying mechanism with the feeding port of the spraying machine for filling, realizing the integration of transportation, obstacle crossing and filling, saving manpower and greatly improving the construction efficiency.

[0012] The present utility model is provided with elastic auxiliary wheels on the outer walls on the left and right sides of the vehicle frame to ensure that the transport device travels along the tunnel. Especially when turning, it can ensure that the transport device smoothly passes through the turning tunnel section. Description of the Drawings

[0013] Figure 1 is the structural schematic diagram of the present utility model.

[0014] Figure 2 is Figure 1 the A-A sectional view of

[0015] Figure 3 is Figure 1 the structural schematic diagram of the elastic auxiliary wheel in

[0016] Figure 4 is the working state diagram of the present utility model.

[0017] Wherein: frame 1; elastic auxiliary wheel 2; spring 2-1; connecting rod 2-2; auxiliary wheel 2-3; support rod 2-4; concrete silo 3; vibrator 4; right traveling mechanism 5; concrete conveying mechanism 6; concrete conveying pipe 6-1; screw conveyor 6-2; motor 6-3; left traveling mechanism 7; lifting support column 7-1; rear traveling wheel 7-2; belt transmission mechanism 7-3; driving motor 7-4; steel cross beam 7-5; front traveling wheel 7-6. Detailed implementation mode

[0018] The present utility model will be further described in detail below in conjunction with the drawings and embodiments, but the present utility model is not limited to the following embodiments.

[0019] In Figure 1 、 2 In the present embodiment, for the initial lining concrete transportation device of the portal-type tunnel, a concrete silo 3 is fixedly installed on the frame 1, and a vibrator 4 is fixedly installed on the wall of the concrete silo 3 by means of threaded fastening connectors to prevent unsmooth feeding. A concrete conveying mechanism 6 is installed at the bottom of the concrete silo 3. Three laterally evenly distributed elastic auxiliary wheels 2 are fixedly installed on the outer walls on the left and right sides of the frame 1 to ensure that the transportation device travels along the tunnel. Especially when turning, it can ensure that the transportation device can smoothly pass through the turning tunnel section. The left traveling mechanism 7 and the right traveling mechanism 5 with the same structure are fixedly installed at the bottom of the frame 1. The left traveling mechanism 7 is: lifting support columns 7-1 are fixedly installed at both the front and rear ends of the upper surface of the steel cross beam 7-5. The lifting support columns 7-1 are used to control the height of the frame 1 to ensure passing through obstacles such as construction equipment. Front traveling wheels 7-6 and rear traveling wheels 7-2 are respectively fixedly installed at both the front and rear ends of the lower surface of the steel cross beam 7-5. A driving motor 7-4 is fixedly installed on the steel cross beam 7-5. The power end of the driving motor 7-4 is connected to the axle of the rear traveling wheel 7-2 through a belt transmission mechanism 7-3. The driving motors 7-4 of the left traveling mechanism 7 and the right traveling mechanism 5 drive the rear traveling wheels 7-2 to travel through the belt transmission mechanism 7-3, thereby driving the entire transportation device to travel.

[0020] The concrete conveying mechanism 6 of the present embodiment includes a concrete conveying pipe 6-1, a screw conveyor 6-2, and a motor 6-3.

[0021] A screw conveyor 6-2 is arranged in the concrete conveying pipe 6-1. The concrete conveying pipe 6-1 is communicated with the concrete silo 3. One end of the concrete conveying pipe 6-1 is a feeding port and the other end is closed. A motor 6-3 is installed on the screw conveyor 6-2 at the closed end of the concrete conveying pipe 6-1. The motor 6-3 drives the screw conveyor 6-2 to rotate, which is used to convey the concrete material in the concrete silo 3 to the feeding port.

[0022] In Figure 3Among them, the elastic auxiliary wheel 2 of this embodiment includes a support rod 2-4, a spring 2-1, a connecting rod 2-2, and an auxiliary wheel 2-3. One end of the support rod 2-4 is connected to the vehicle frame 1, and an installation hole is axially machined at the other end of the support rod 2-4. The spring 2-1 and the connecting rod 2-2 are installed in the installation hole, and the auxiliary wheel 2-3 is connected to the connecting rod 2-2.

[0023] The lifting support column 7-1 of this embodiment includes a support column and a hollow jack. The hollow jack is installed on the support column. The support column is fixedly installed on the steel cross beam 7-5, and the cylinder body of the hollow jack is fixedly connected to the vehicle frame 1. By controlling the lifting of the vehicle frame 1 through the hollow jack, obstacles in the tunnel can be passed well.

[0024] The working principle of the present utility model is as follows:

[0025] As Figure 4 , the driving motors 7-4 of the left traveling mechanism 7 and the right traveling mechanism 5 drive the rear traveling wheels 7-2 to travel through the belt transmission mechanism 7-3, thereby driving the entire transportation device to travel. By controlling the lifting of the vehicle frame 1 through the hollow jack, obstacles in the tunnel can be passed well. When passing through a tunnel with a certain curvature, the spring 2-1 of the elastic auxiliary wheel 2 on the inner side of the vehicle frame 1 is compressed. Under the action of the elastic force of the spring 2-1, the auxiliary wheel 2-3 travels along the tunnel wall, which can ensure that the transportation device smoothly passes through the curved section of the tunnel and reaches the position of the shotcrete machine. The height of the vehicle frame 1 is controlled by the hollow jack to align the feeding port of the concrete delivery pipe 6-1 with the feeding port of the shotcrete machine for filling. After filling is completed, the construction area is exited to avoid interfering with the construction, realizing the integration of transportation, obstacle passing, and filling, saving manpower and greatly improving the construction efficiency.

Claims

1. A primary lining concrete transportation device for a city gate-shaped tunnel, characterized in that: A concrete bin is provided on the vehicle frame. A concrete conveying mechanism is provided at the bottom of the concrete bin. Elastic auxiliary wheels are provided on the outer walls on both the left and right sides of the vehicle frame. Left and right traveling mechanisms with the same structure are provided at the bottom of the vehicle frame. The left traveling mechanism is as follows: Lifting support columns are provided at both the front and rear ends on the upper surface of the steel cross beam. Front and rear traveling wheels are respectively provided at the front and rear ends on the lower surface of the steel cross beam. A driving motor is provided on the steel cross beam. The power end of the driving motor is connected to the axle of the rear traveling wheel through a belt transmission mechanism.

2. The concrete transportation device for the initial lining of the portal-shaped tunnel according to claim 1, characterized in that The concrete conveying mechanism is as follows: A screw conveyor is provided inside the concrete conveying pipe. The concrete conveying pipe is communicated with the concrete bin. One end of the concrete conveying pipe is a feeding port and the other end is closed. A motor is provided on the screw conveyor at the closed end of the concrete conveying pipe.

3. The initial lining concrete transportation device for the portal-shaped tunnel according to claim 1, characterized in that Vibrators are provided on the concrete bin wall.

4. The concrete transportation device for the initial lining of the portal-shaped tunnel according to claim 1, wherein The elastic auxiliary wheel is as follows: One end of the support rod is connected to the vehicle frame. An installation hole is axially machined at the other end of the support rod. A spring and a connecting rod are provided inside the installation hole. An auxiliary wheel is connected to the connecting rod.

5. The initial lining concrete transportation device for the portal-shaped tunnel according to claim 1, characterized in that, The lifting support column is as follows: A hollow jack is provided on the support column. The support column is fixedly arranged on the steel cross beam. The cylinder body of the hollow jack is fixedly connected to the vehicle frame.

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