An integrated device applied to tunnel shotcrete operation
By integrating shotcrete construction equipment onto transport vehicles, the problems of frequent equipment movement and high labor intensity in tunnel construction have been solved, achieving efficient shotcrete operations, reducing labor costs, and improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA GEZHOUBA GRP THREE GORGES CONSTR ENG CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-29
AI Technical Summary
In existing tunnel shotcrete construction, equipment is moved frequently, preliminary preparations are complex, labor intensity is high, construction efficiency is low, and the transportation of shotcrete materials consumes a lot of manpower.
The shotcrete construction equipment is integrated and fixedly installed on the transport vehicle to form an integrated device, including a hopper, belt conveyor and shotcrete machine, which is transported as a whole to the construction site for shotcrete operation.
It reduced the labor intensity of operators, improved the efficiency of shotcreting operations, simplified the equipment installation and fixing process, and reduced labor costs.
Smart Images
Figure CN224300892U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel shotcrete construction technology, specifically to an integrated device for tunnel shotcrete operations. Background Technology
[0002] During tunnel construction, shotcrete support is required for the excavated tunnel. Currently, the main process for shotcrete support involves transporting shotcrete material from outside the tunnel to inside the tunnel by workers before the shotcrete operation. The shotcrete material is then transported from a lower to a higher location and then to the shotcrete machine, which is used to perform the shotcrete operation inside the tunnel. Moreover, after shotcreting is completed in one construction section, the entire equipment needs to be moved to the next construction section for shotcreting. The entire shotcrete operation involves a lot of complex preparatory work, and the transportation of shotcrete material requires a lot of manpower, resulting in high labor intensity and low construction efficiency for the construction workers. Utility Model Content
[0003] To address the aforementioned problems, this utility model provides an integrated device for shotcreting operations in tunnels. This device integrates the equipment used in the shotcreting process and fixes it as a whole on a transport vehicle to facilitate overall transportation of the device, thereby effectively reducing the labor intensity of workers and improving the efficiency of shotcreting operations.
[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: An integrated device for tunnel shotcreting operations includes a transport vehicle for carrying and moving the entire device. A hopper for holding shotcreting material is fixedly installed on the top of the truck bed of the transport vehicle. A belt conveyor is connected directly below the discharge port of the hopper. A shotcreting machine for shotcreting is connected to the discharge port of the belt conveyor. The shotcreting machine is fixed to the rear end of the truck bed by a fixed support.
[0005] Preferably, the transport vehicle is an engineering vehicle used for tunnel construction.
[0006] Preferably, the hopper device includes a hopper support, which is fixed to the top of the car floor by connecting steel plates and bolts. A hopper is fixedly installed on the top of the hopper support, and a discharge port is provided at the bottom of the hopper. An adjustable valve is provided at the discharge port.
[0007] Preferably, the hopper device is installed entirely inside the cargo compartment of the transport vehicle.
[0008] Preferably, the belt conveyor includes a first frame and a second frame connected at an inclined assembly. Movable supports are slidably connected to the ends of the first frame and the second frame, respectively. A drive roller and a driven roller are rotatably mounted on the two sets of movable supports through bearings and bearing seats. A transmission belt is installed between the drive roller and the driven roller. An idler roller is supported on the back of the transmission belt. The idler roller is installed on the top of the first frame and the second frame. The main shaft of the drive roller is connected to a low-speed motor through a belt drive mechanism to transmit power.
[0009] Preferably, the first frame and the second frame form sleeves at both ends and are provided with fixed steel plates. The sliding end of the movable support is installed in the sleeve. The fixed steel plate is rigidly connected to the frame and is connected with an adjusting bolt. The free end of the adjusting bolt is connected to the sliding end of the movable support.
[0010] Preferably, the idlers are arranged in pairs, and the idlers belonging to the same pair are arranged in a V-shape on the first frame and the second frame.
[0011] Preferably, the fixed support is connected to the bottom end of the carriage floor plate by bolts, and the shotcrete machine is placed on the fixed support and connected to the fixed support by bolts.
[0012] Preferably, the fixed support is made of steel profiles.
[0013] The present invention has the following beneficial effects:
[0014] 1. This utility model device integrates the equipment used in the shotcrete construction process and fixes it on a transport vehicle to facilitate the overall transportation of the device, thereby effectively reducing the labor intensity of the workers and improving the efficiency of shotcrete operations.
[0015] 2. The hopper support structure ensures the stability and reliability of the hopper's support. The adjustable valves mentioned above facilitate subsequent control of the material feeding process.
[0016] 3. The aforementioned carriage can be used to effectively protect the equipment inside.
[0017] 4. The belt conveyor mentioned above facilitates the subsequent transport of the shotcrete material, thereby transporting the shotcrete material from the hopper device to the inside of the shotcrete machine.
[0018] 5. Through the sliding fit between the movable bracket and the sleeve, the extension and retraction of the movable bracket can be adjusted by adjusting the bolts, which facilitates the adjustment of the driving roller and the driven roller, so as to achieve the tension adjustment of the transmission belt.
[0019] 6. The above-mentioned fixed installation structure simplifies the installation and fixing process of the fixed support, ensures the strength of its installation and fixing structure, and at the same time extends the length of the carriage floor to a certain extent. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a side view diagram of an integrated tunnel shotcrete operation device.
[0022] Figure 2 This is a schematic diagram showing the elevation position of the shotcrete machine and hopper device.
[0023] Figure 3 This is a schematic diagram of the elevation structure of the fixed support for the shotcrete machine.
[0024] Figure 4 This is a schematic diagram showing the elevation position of the shotcrete machine and hopper device.
[0025] Figure 5 A schematic diagram of the planar structure of the fixed support for the shotcrete machine.
[0026] In the diagram: 1. Transport vehicle; 2. Hopper device; 21. Discharge port; 22. Hopper support; 23. Hopper; 3. Belt conveyor; 31. Drive roller; 32. First frame; 33. Transmission belt; 34. Idler roller; 35. Second frame; 36. Adjusting bolt; 37. Fixed steel plate; 38. Movable support; 39. Sleeve; 311. Driven roller; 312. Low-speed motor; 4. Shotcrete machine; 5. Fixed support; 6. Carriage; 7. Carriage floor; 8. Connecting steel plate. Detailed Implementation
[0027] The embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0028] Reference Figure 1-5 An integrated device for tunnel shotcreting operations includes a transport vehicle 1 for carrying and moving the entire device. A hopper 2 for holding shotcrete material is fixedly installed on the top of the vehicle's floor 7. A belt conveyor 3 is connected directly below the outlet of the hopper 2, and a shotcrete machine 4 is connected to the outlet of the belt conveyor 3. The shotcrete machine 4 is fixed to the rear end of the vehicle's floor 7 by a fixed support 5. The device integrates the equipment used in the shotcreting process and fixes it as a whole on the transport vehicle 1, facilitating overall transport and effectively reducing the labor intensity of workers while improving the efficiency of shotcreting operations. In practical use, the shotcrete material is placed inside the hopper 2. Then, the transport vehicle 1 moves the entire device to the shotcreting location. The belt conveyor 3 then directly transports the shotcrete material to the shotcrete machine 4, which performs shotcreting on the tunnel. After one working face is completed, the device is moved to the next working face.
[0029] Furthermore, the transport vehicle 1 is a tunnel construction vehicle. By using a construction vehicle, the cost of the entire device is effectively reduced. It only requires modification of existing construction vehicles.
[0030] Furthermore, the hopper device 2 includes a hopper support 22, which is fixed to the top of the carriage floor 7 by connecting steel plates 8 and bolts. A hopper 23 is fixedly installed on the top of the hopper support 22, and a discharge port 21 is provided at the bottom of the hopper 23. The discharge port 21 is equipped with an adjustable valve. The hopper device 2 described above can be used to hold and store shotcrete. The hopper support 22 ensures the stability and reliability of supporting the hopper 23. The adjustable valve facilitates subsequent control of the material feeding process.
[0031] Furthermore, the hopper device 2 is entirely housed inside the cargo compartment 6 of the transport vehicle 1. The cargo compartment 6 provides effective protection for the devices inside.
[0032] Furthermore, the belt conveyor 3 includes a first frame 32 and a second frame 35 connected at an inclined configuration. Movable supports 38 are slidably connected to the ends of the first frame 32 and the second frame 35, respectively. A drive roller 31 and a driven roller 311 are rotatably mounted on the two sets of movable supports 38 via bearings and bearing seats. A transmission belt 33 is installed between the drive roller 31 and the driven roller 311. A support roller 34 is mounted on the back of the transmission belt 33. The support roller 34 is installed on the top of the first frame 32 and the second frame 35. The main shaft of the drive roller 31 is connected to a low-speed motor 312 via a belt drive mechanism to transmit power. This belt conveyor 3 facilitates the subsequent conveying of the shotcrete material, thereby transporting the shotcrete material from the hopper device 2 to the inside of the shotcrete machine 4. During operation, during the feeding process, the shotcrete material falls onto the transmission belt 33. The low-speed motor 312 drives the drive roller 31, which in turn drives the transmission belt 33, thus conveying the shotcrete material.
[0033] Furthermore, sleeves 39 are formed at both ends of the first frame 32 and the second frame 35, and fixed steel plates 37 are provided thereon. The sliding end of the movable bracket 38 is installed in the sleeve 39. The fixed steel plate 37 is rigidly connected to the frame and is connected to an adjusting bolt 36. The free end of the adjusting bolt 36 is connected to the sliding end of the movable bracket 38. Through the sliding engagement between the movable bracket 38 and the sleeve 39, the extension and retraction of the movable bracket 38 can be adjusted by the adjusting bolt 36, thereby facilitating the adjustment of the driving roller 31 and the driven roller 311 to achieve the tension adjustment of the transmission belt 33.
[0034] Furthermore, the idler rollers 34 are arranged in pairs, with rollers belonging to the same group positioned in a V-shape on the first frame 32 and the second frame 35. This V-shape arrangement effectively prevents spillage of the sprayed slurry during transport.
[0035] Furthermore, the fixed support 5 is bolted to the bottom end of the carriage floor 7, and the shotcrete machine 4 is placed on the fixed support 5 and connected to the fixed support 5 by bolts. This fixed installation structure simplifies the installation process of the fixed support 5, ensures the strength of its installation structure, and also extends the length of the carriage floor 7 to a certain extent.
[0036] Furthermore, the fixed support 5 is made of cut steel profiles. The fixed support 5 simplifies the manufacturing process and reduces costs.
[0037] The specific installation and usage method of this utility model adopts the following steps:
[0038] Step 1: The hopper device 2 is made of profile material and has a discharge port 21 at the bottom. The discharge port 21 is equipped with an adjustable valve, which can be adjusted to control the opening size of the discharge port. The four corners of the bottom of the hopper device 2 are connected to the vehicle floor 7 with bolts.
[0039] Step 2: The drive roller 31 and driven roller 311 of the belt conveyor 3 are composed of a central shaft, a disc and a cylindrical metal rod. The disc is fixed coaxially with the central shaft. Several semi-circular bevels matching the diameter of the metal rod are provided on the edge of the disc. The metal rod is placed in the bevel and welded to the disc to prevent detachment.
[0040] Step 3: The two ends of the metal rod contract towards the central axis along the radial direction of the disc. Two idlers are grouped together, and the idlers in the same group are set in a V-shape on the frame to prevent the belt from shaking.
[0041] Step 4: Both ends of the drive roller 31 and driven roller 311 of the belt conveyor 3 are connected to the movable bracket 38 via bearings and bearing seats. The movable bracket 38 is slidably connected to the frame. The two ends of the frame form sleeves 39 and are equipped with fixed steel plates 37. The sliding end of the movable bracket 38 is installed in the sleeve 39. The fixed steel plates 37 are rigidly connected to the frame and are connected with adjusting bolts 36. The free end of the adjusting bolts 36 is connected to the sliding end of the movable bracket 38. The positions of the drive roller 31 and driven roller 311 can be adjusted by adjusting the bolts 36 to tension the conveyor belt 33.
[0042] Step 5: The fixed support 5 is made of profile material and is connected to the carriage floor 7 with bolts. The shotcrete machine is placed on the fixed support 5 and connected to the fixed support 5 with bolts. All fixed parts are connected with profile material and bolts, which can ensure the stability of the equipment and facilitate construction.
[0043] Specific design process of this utility model:
[0044] First, determine the specifications and models of transport vehicle 1, the dimensions of hopper device 2, and the dimensions of belt conveyor 3 based on the tunnel cross-section dimensions.
[0045] Based on the position of the belt conveyor 3, the position of the hopper device 2 is determined. The hopper device 2 is provided with a discharge port 21, which is equipped with an adjustable valve. The four corners of the bottom of the hopper device 2 are connected to the vehicle floor 7 with bolts.
[0046] The drive roller 31 and driven roller 311 of the belt conveyor 3 consist of a central shaft, a disc, and a cylindrical metal rod. The disc is coaxially fixed with the central shaft. Several semi-circular bevels matching the diameter of the metal rod are provided on the edge of the disc. The metal rod is placed in the bevels and welded to the disc. The two ends of the metal rod taper towards the axis of the central shaft along the radial direction of the disc. Two idler rollers are grouped together, and idler rollers belonging to the same group are arranged in a V-shape on the frame.
[0047] Both ends of the driving roller 31 and driven roller 311 of the belt conveyor 3 are connected to the movable support 38 via bearings and bearing seats. The movable support 38 is slidably connected to the frame. The two ends of the frame form sleeves 39 and are provided with fixed steel plates 37. The sliding end of the movable support 38 is installed in the sleeves 39. The fixed steel plates 37 are rigidly connected to the frame and are connected with adjusting bolts 36. The free end of the adjusting bolts 36 is connected to the sliding end of the movable support 38.
[0048] The fixed support 5 is made of profile and is connected to the carriage floor 7 by bolts. The shotcrete machine is placed on the fixed support 5 and is connected to the fixed support 5 by bolts.
[0049] In the specific work process:
[0050] First, the shotcrete material is placed inside the hopper device 2, and then the entire device is moved to the shotcrete construction position by the transport vehicle 1.
[0051] Then, the feeding process of the hopper device 2 is controlled to transport the shotcrete material to the belt conveyor 3;
[0052] The shotcrete material is then directly transported to the shotcrete machine 4 via belt conveyor 3, and the shotcrete machine 4 is used to perform shotcrete construction on the tunnel.
[0053] After one work area is completed, the entire unit is moved to the next work area.
[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An integrated device for shotcreting operations in tunnels, characterized in that, The device includes a transport vehicle (1) for carrying and moving the entire device. A hopper device (2) for holding the shotcrete material is fixedly installed on the top of the floor plate (7) of the transport vehicle (1). A belt conveyor (3) is connected directly below the discharge port of the hopper device (2). A shotcrete machine (4) for shotcreting is connected to the discharge port of the belt conveyor (3). The shotcrete machine (4) is fixed to the tail end of the floor plate (7) by a fixed support (5).
2. The integrated device for tunnel shotcreting operations according to claim 1, characterized in that, The transport vehicle (1) is an engineering vehicle used for tunnel construction.
3. The integrated device for tunnel shotcreting operations according to claim 1, characterized in that, The hopper device (2) includes a hopper support (22), which is fixed to the top of the car floor (7) by connecting steel plate (8) and bolts. A hopper (23) is fixedly installed on the top of the hopper support (22), and a discharge port (21) is provided at the bottom of the hopper (23). An adjustable valve is provided at the discharge port (21).
4. The integrated device for tunnel shotcreting operations according to claim 1, characterized in that, The hopper device (2) is installed inside the carriage (6) of the transport vehicle (1).
5. The integrated device for tunnel shotcreting operations according to claim 1, characterized in that, The belt conveyor (3) includes a first frame (32) and a second frame (35) connected by an inclined combination. The ends of the first frame (32) and the second frame (35) are respectively slidably connected to movable brackets (38). The two sets of movable brackets (38) are rotatably mounted with a drive roller (31) and a driven roller (311) through bearings and bearing seats. A transmission belt (33) is installed between the drive roller (31) and the driven roller (311). The back of the transmission belt (33) is supported by a roller (34). The roller (34) is installed on the top of the first frame (32) and the second frame (35). The main shaft of the drive roller (31) is connected to a low-speed motor (312) through a belt drive mechanism and transmits power.
6. The integrated device for tunnel shotcreting operations according to claim 5, characterized in that, The first frame (32) and the second frame (35) form a sleeve (39) at both ends and are provided with a fixed steel plate (37). The sliding end of the movable bracket (38) is installed in the sleeve (39). The fixed steel plate (37) is rigidly connected to the frame and is connected with an adjusting bolt (36). The free end of the adjusting bolt (36) is connected to the sliding end of the movable bracket (38).
7. The integrated device for tunnel shotcreting operations according to claim 5, characterized in that, The idler rollers (34) are arranged in pairs, and the idler rollers belonging to the same group are arranged in a V-shape on the first frame (32) and the second frame (35).
8. The integrated device for tunnel shotcreting operations according to claim 1, characterized in that, The fixed support (5) is connected to the bottom of the carriage floor (7) by bolts. The shotcrete machine (4) is placed on the fixed support (5) and connected to the fixed support (5) by bolts.
9. The integrated device for tunnel shotcreting operations according to claim 8, characterized in that, The fixed support (5) is made of steel profile material.