Turnover bridge type integrated moving unit suitable for benching method excavation and construction method

Abstract

The invention belongs to the technical field of tunnel construction equipment, and particularly relates to an overturning bridge type integrated moving unit suitable for benching method excavation and a construction method. According to the technical scheme, the overturning bridge type integrated moving unit suitable for bench method excavation comprises a main rack assembly, a main tunneling arm assembly is installed on the front side of the main rack assembly, an arch frame transferring assembly, a front arch spraying arm assembly and a rear arch spraying arm assembly are installed at the top of the main rack assembly, and arch anchor arm assemblies are installed on the left side and the right side of the main rack assembly correspondingly; a transition overturning bridge is installed on the rear side of the main rack assembly. According to the overturning bridge type integrated moving unit suitable for bench method excavation and the construction method, during excavation, deslagging and primary supporting operation, a vehicle channel, a safety channel, a maintenance channel and the like are not affected.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction equipment, and particularly relates to a flip-bridge integrated mobile unit adapted to the bench cut method and a construction method thereof. Background Art

[0002] In the New Austrian Tunneling Method construction, the previous processes of the operation cycle of tunnel construction are excavation, mucking and primary support operations. There is no mature integration in the tunnel construction equipment industry for only the previous process operations that are closed into a loop. In medium-span construction tunnels, the bench cut method can be considered for some tunnel constructions. At present, in order to adapt to the bench length of the long bench cut excavation, the invert excavation process cannot closely follow, and the next construction affects the excavation of the previous construction. Summary of the Invention

[0003] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a flip-bridge integrated mobile unit adapted to the bench cut method and a construction method thereof, which do not affect vehicle passages, safety passages, maintenance passages, etc. while performing excavation, mucking and primary support operations.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A flip-bridge integrated mobile unit adapted to the bench cut method includes a main platform frame assembly. A main tunneling arm assembly is installed on the front side of the main platform frame assembly. An arch transfer assembly and an arch spraying arm assembly for front and rear arch spraying operations are installed on the top of the main platform frame assembly. Arch anchoring arm assemblies are installed on both the left and right sides of the main platform frame assembly. A transition flip-bridge is installed on the rear side of the main platform frame assembly.

[0006] The present invention is a construction equipment for the bench cut method of medium-span tunnels. Through the equipment modules of different excavations, parallel mucking and primary support operations for the front and rear benches, the process of timely forming a loop at the heading face is completed, improving the utilization rate of personnel and equipment. The present invention ensures the cooperation of the construction cycle by guaranteeing the driving passage, personnel safety passage, material passage and equipment maintenance passage. The present invention realizes the non-interference between the two working faces through the connection of the rear transition flip-bridge. The theoretical time of each process on the upper bench is less than that of the lower bench. As long as the process connection of the lower bench is completed within the process time of the upper bench, the parallel advancement of the next invert operation can be realized without affecting the excavation efficiency of the previous operation. Except for not participating in the excavation and bolt operations of the next and invert, the integrated machine can cover all the erection and shotcreting operations. While parallel operations are carried out, the rational distribution between processes is increased, and the process connection of the bench excavation method and the New Austrian Tunneling Method support can be connected.

[0007] As a preferred embodiment of the present invention, the main gantry assembly includes a frame mechanism. A front-end single-layer sliding mechanism is installed on the front side of the frame mechanism. The main tunneling arm assembly is installed on the front-end single-layer sliding mechanism. The arch anchor arm assemblies are installed on the left and right sides of the frame mechanism. The arch frame transfer assembly and the arch spraying arm assembly are installed on the top of the frame mechanism. The transition flipping bridge is installed on the rear side of the frame mechanism.

[0008] A step-type walking mechanism and a telescopic leg mechanism are also installed at the bottom of the frame mechanism. An electrical system, a hydraulic system, a compressed air system, a water circulation system, a lubrication system, and a dust removal and ventilation system are also installed inside the frame mechanism.

[0009] Each position of the main gantry assembly is respectively connected to the main tunneling arm assembly, the front arch spraying arm assembly, the rear arch spraying arm assembly, the arch frame transfer assembly, the arch anchor arm assemblies, and the transition flipping bridge, ensuring that each assembly can work in coordination.

[0010] As a preferred embodiment of the present invention, the main tunneling arm assembly includes an arm turntable. The arm turntable is installed at the output end of the front-end single-layer sliding mechanism of the frame mechanism. The output end of the arm turntable is connected to a folding arm. The other end of the folding arm is installed with a tunneling tooling. The main tunneling arm assembly also includes actuator control elements such as cylinders, valve groups, and sensors for controlling the tunneling tooling. The tunneling tooling is a breaker, etc.

[0011] As a preferred embodiment of the present invention, the arch anchor arm assembly includes a sliding mechanism. The sliding mechanism is installed on the side of the main gantry assembly. The output end of the sliding mechanism is connected to an arm turntable. The output end of the arm turntable is connected to a telescopic arm. An operation basket, a rock bolt drill, and an arch frame gripper are respectively installed at the output end of the telescopic arm. The arch anchor arm assembly also includes actuator control elements such as cylinders, valve groups, and sensors for controlling the actions of each structure. There are two sets of arch anchor arm assemblies, which are arranged symmetrically left and right on the top of the main gantry assembly.

[0012] As a preferred embodiment of the present invention, the arch spraying arm assembly includes a sliding mechanism. The sliding mechanism is installed on the top of the main gantry assembly. The output end of the sliding mechanism is connected to an arm turntable. The output end of the arm turntable is connected to a telescopic arm. An arch frame transfer auxiliary arm, a flipping and folding arm, a shotcreting operation head, and an arch frame gripper are respectively installed at the output end of the telescopic arm. The arch spraying arm assembly also includes actuator control elements such as cylinders, valve groups, and sensors for controlling the actions of each structure.

[0013] As a preferred embodiment of the present invention, a slurry storage assembly is also installed on the main gantry assembly. The shotcreting operation head is connected to the slurry storage assembly through a pipeline.

[0014] As a preferred embodiment of the present invention, the slurry storage assembly includes a slurry storage tank. The slurry storage tank is installed on the main gantry assembly. The slurry storage tank is connected to a pump group. The pump group is connected to the shotcreting operation head through a pipeline.

[0015] As a preferred embodiment of the present invention, a front slag accumulation device is further installed on the front side of the main gantry assembly.

[0016] As a preferred embodiment of the present invention, the number of the arch spraying arm assemblies is two, one of the arch spraying arm assemblies operates forward, and the other arch spraying arm assembly operates backward.

[0017] A bench cut excavation construction method includes the following steps:

[0018] S1: When the trestle is lowered, the lower bench is subjected to concrete curing, the upper bench is excavated by the main tunneling arm assembly, parallel mucking is carried out in cooperation with construction machinery, and after the front processes such as mucking and trimming are completed, the upper bench is subjected to initial spraying operation by the front arch spraying arm;

[0019] S2: The trestle is retracted, the upper bench is subjected to the operation of erecting the support and bolting materials, and the lower bench is subjected to the operations of excavation, mucking and cleaning the bottom, erecting the support and bolting;

[0020] S3: After the previous process is completed, the trestle is lowered, and spraying operations are carried out on the upper bench and the lower bench;

[0021] S4: After the operation is completed, the trestle is retracted, and the integrated mobile unit starts to advance and move the vehicle, and starts the operation of the next cycle after moving to the operation position.

[0022] The beneficial effects of the present invention are as follows:

[0023] The present invention is a bench cut method for medium-span tunnels in cooperation with construction equipment. Through the equipment modules of different excavations, parallel mucking and initial support operations on the front and rear benches, the process of timely forming a ring at the tunnel face is completed, and the utilization rate of personnel and equipment is improved. The present invention ensures the construction cycle by guaranteeing the driving passage, personnel safety passage, material passage and equipment maintenance passage. The present invention realizes the non-interference between the two working faces through the connection of the rear transition and turning bridge. The theoretical time of each process on the upper bench is less than that of the lower bench. As long as the process connection of the lower bench is completed within the process time of the upper bench, parallel propulsion of the next invert operation can be achieved without affecting the excavation efficiency of the previous operation. Except for not participating in the excavation and bolting operations of the next invert and the lower bench, the integrated machine can cover the operations of erecting and spraying. While carrying out parallel operations, the reasonable distribution between processes is increased, and the process connection of the bench cut excavation method and the New Austrian Tunneling Method support can be connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view of the present invention;

[0025] Figure 2 is the top view of the present invention;

[0026] Figure 3It is the left view of the present invention;

[0027] Figure 4 It is the construction flow chart of the present invention;

[0028] Figure 5 It is the construction simulation diagram of the present invention.

[0029] In the figure: 1 - main platform frame assembly; 2 - main tunneling arm assembly; 3 - arch transfer assembly; 4 - arch spraying arm assembly; 5 - arch anchoring arm assembly; 6 - transition flipping bridge; 7 - slurry storage assembly; 8 - front slag accumulation device; 9 - crawler walking assembly. Specific embodiments

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] As Figures 1 to 3 shown, the flipping bridge type integrated mobile unit adapted to bench cut excavation in this embodiment includes a main platform frame assembly 1. A main tunneling arm assembly 2 is installed on the front side of the main platform frame assembly 1. An arch transfer assembly 3 and two arch spraying arm assemblies 4, one in front and one behind, are installed on the top of the main platform frame assembly 1. Arch anchoring arm assemblies 5 are installed on both the left and right sides of the main platform frame assembly 1. A transition flipping bridge 6 is installed on the rear side of the main platform frame assembly 1.

[0033] The present invention is a step method coordinated construction equipment for medium-span tunnels. Through different excavation of front and rear steps, parallel slag discharge and equipment modules for initial support operations, the process of timely looping on the face is completed, thereby improving the utilization rate of personnel and equipment. The present invention cooperates with the construction cycle by ensuring the driving channel, personnel safety channel, material channel and equipment maintenance channel. The present invention achieves mutual non-influence of the two working surfaces through the connection of the rear transition flip bridge 6. Theoretically, the process time of the upper step is less than the process time of the lower step. As long as the process connection of the lower step is completed within the process time of the upper step, the parallel advancement of the lower arch operation can be achieved, and the excavation efficiency of the upper road will not be affected. The all-in-one machine does not participate in the excavation and anchor rod operation of the lower road and the arch, and the frame spraying operation can be covered. While operating in parallel, the reasonable distribution between processes is increased, and the process connection of the step excavation method and the new Austrian tunneling method support can be completed by connecting the processes.

[0034] Specifically, the main gantry assembly 1 includes a frame mechanism, a front single-layer sliding mechanism is installed on the front side of the frame mechanism, the main excavation arm assembly 2 is installed on the front single-layer sliding mechanism, the arch anchor arm assembly 5 is installed on the left and right sides of the frame mechanism, the arch frame transfer assembly 3 and the arch spray arm assembly 4 are installed on the top of the frame mechanism, and the transition flip bridge 6 is installed on the rear side of the frame mechanism.

[0035] The bottom of the frame mechanism is also equipped with a crawler walking assembly 9 and a telescopic leg mechanism. The frame mechanism is also equipped with an electrical system, a hydraulic system, a compressed air system, a water circulation system, a lubrication system and a dust removal ventilation system. The electrical system is composed of a control circuit, a power circuit, a lighting circuit and an emergency circuit. The hydraulic system is distributed in all the original mechanisms that need to perform actions. The lubrication system is composed of a lubrication plunger pump group, a pipeline system, a heating system, etc. The ventilation system is composed of a fan duct. The water circulation system is composed of a booster pump and a water circulation pipeline.

[0036] Each position of the main frame assembly 1 is respectively connected to the main excavation arm assembly 2, the front arch spray arm assembly 4, the rear arch spray arm assembly 4, the arch frame transfer assembly 3, the arch anchor arm assembly 5 and the transition flip bridge 6. , ensuring that each assembly can work in coordination.

[0037] The main excavation arm assembly 2 includes an arm turntable, which is installed on the output end of the single-layer sliding mechanism at the front end of the frame mechanism, and the output end of the arm turntable is connected to a folding arm, and the other end of the folding arm is installed with an excavation tool. The main excavation arm assembly 2 also includes an oil cylinder, a valve group, a sensor and other execution control elements for controlling the excavation tool, and the excavation tool is a breaker hammer, etc.

[0038] The arch anchor arm assembly 5 includes a sliding mechanism, which is installed on the side of the main gantry assembly 1. The output end of the sliding mechanism is connected to a boom turntable, the output end of the boom turntable is connected to a telescopic boom, and the output ends of the telescopic boom are respectively installed with an operation basket, a rock bolt drill, and an arch grab. The arch anchor arm assembly 5 further includes actuating control elements such as oil cylinders, valve groups, sensors, etc. for controlling the actions of each structure. There are two sets of the arch anchor arm assemblies 5, which are symmetrically arranged left and right on the top of the main gantry assembly 1.

[0039] The arch spraying arm assembly 4 includes a sliding mechanism, which is installed on the top of the main gantry assembly 1. The output end of the sliding mechanism is connected to a boom turntable, the output end of the boom turntable is connected to a telescopic boom, and the output ends of the telescopic boom are respectively installed with an arch transfer auxiliary arm, a flipping and folding arm, a shotcreting operation head, and an arch grab. The arch spraying arm assembly 4 further includes actuating control elements such as oil cylinders, valve groups, sensors, etc. for controlling the actions of each structure. There are two sets of the arch spraying arm assemblies 4, and the front and rear two arch spraying arm assemblies 4 are arranged on the top of the main gantry assembly 1 with opposite nozzle directions.

[0040] A slurry storage assembly 7 is further installed on the main gantry assembly 1, and the shotcreting operation head is connected to the slurry storage assembly 7 through a pipeline. The slurry storage assembly 7 includes a slurry storage tank, which is installed on the main gantry assembly 1. The slurry storage tank is connected to a pump group, and the pump group is connected to the shotcreting operation head through a pipeline.

[0041] A front slag accumulation device 8 is further installed on the front side of the main gantry assembly 1.

[0042] As Figure 4 and Figure 5 shown, the bench cut excavation construction method of this embodiment includes the following steps:

[0043] S1: When the trestle is lowered, the lower bench is subjected to concrete curing, the upper bench is excavated by the main tunneling arm assembly 2, and parallel mucking is carried out in cooperation with construction machinery. After completing the previous process operations such as mucking and trimming the edge, the upper bench is subjected to initial shotcreting by the front arch spraying arm;

[0044] S2: The trestle is retracted, the upper bench is subjected to the operation of erecting supports and bolting materials, and the lower bench is subjected to excavation, mucking operations, and operations of cleaning the bottom, erecting supports, and bolting;

[0045] S3: After the previous process is completed, the trestle is lowered, and shotcreting operations are carried out on the upper bench and the lower bench;

[0046] S4: After the operations are completed, the trestle is retracted, and the integrated mobile unit starts to advance and move the vehicle. After moving to the operation position, the next cycle of operation work starts.

[0047] The present invention is not limited to the above optional embodiments, and anyone can obtain other various forms of products under the inspiration of the present invention. However, no matter what changes are made in its shape or structure, as long as the technical solutions fall within the scope defined by the claims of the present invention, they are all within the protection scope of the present invention.

Claims

1. A tilting bridge type integrated mobile unit suitable for step excavation, characterized by: The invention comprises a main frame assembly (1), a main excavation arm assembly (2) is installed on the front side of the main frame assembly (1), an arch frame transfer assembly (3) and an arch spraying arm assembly (4) for front and rear arch spraying operations are installed on the top of the main frame assembly (1), arch anchor arm assemblies (5) are installed on both the left and right sides of the main frame assembly (1), and a transition flip bridge (6) is installed on the rear side of the main frame assembly (1).

2. The tilting bridge integrated mobile unit adapted for step excavation according to claim 1 is characterized in that: The main frame assembly (1) comprises a frame mechanism, a front single-layer sliding mechanism is installed on the front side of the frame mechanism, a main excavation arm assembly (2) is installed on the front single-layer sliding mechanism, an arch anchor arm assembly (5) is installed on the left and right sides of the frame mechanism, an arch frame transfer assembly (3) and an arch spray arm assembly (4) are installed on the top of the frame mechanism, and a transition flip bridge (6) is installed on the rear side of the frame mechanism.

3. The flip bridge type integrated mobile unit adapted for step excavation according to claim 2 is characterized in that: The main excavation arm assembly (2) comprises an arm turntable, which is installed on the output end of the single-layer sliding mechanism at the front end of the frame mechanism. The output end of the arm turntable is connected to a folding arm, and the other end of the folding arm is installed with an excavation tool.

4. The flip bridge type integrated mobile unit adapted for step excavation according to claim 1 is characterized in that: The arch anchor arm assembly (5) comprises a sliding mechanism, which is installed on the side of the main frame assembly (1), the output end of the sliding mechanism is connected to the arm frame turntable, the output end of the arm frame turntable is connected to the telescopic arm frame, and the output end of the telescopic arm frame is respectively installed with an operating hanging basket, an anchor drilling machine and an arch frame gripper.

5. The flip bridge type integrated mobile unit adapted for step excavation according to claim 1 is characterized in that: The arch spray arm assembly (4) comprises a sliding mechanism, which is installed on the top of the main frame assembly (1), the output end of the sliding mechanism is connected to the arm frame turntable, the output end of the arm frame turntable is connected to the telescopic arm frame, and the output end of the telescopic arm frame is respectively installed with an arch frame transfer auxiliary arm, a flip folding arm, a spraying operation head and an arch frame gripper.

6. The flip bridge type integrated mobile unit adapted for step excavation according to claim 5, characterized in that: A slurry storage assembly (7) is also installed on the main frame assembly (1), and the spraying operation head is connected to the slurry storage assembly (7) through a pipeline.

7. The flip bridge type integrated mobile unit adapted for step excavation according to claim 6, characterized in that: The slurry storage assembly (7) comprises a slurry storage tank, which is installed on the main frame assembly (1). The slurry storage tank is connected to a pump group, and the pump group is connected to the spraying operation head through a pipeline.

8. The flip bridge type integrated mobile unit adapted for step excavation according to claim 1, characterized in that: A front slag accumulation device (8) is also installed on the front side of the main frame assembly (1).

9. The flip bridge integrated mobile unit adapted for step excavation according to claim 1, characterized in that: The number of the arch spray arm assemblies (4) is two, one of which is directed forward for operation, and the other is directed backward for operation.

10. A step excavation construction method, using the tilting bridge-type integrated mobile unit adapted for step excavation according to claim 1, characterized in that: The following steps are involved: S1: When the trestle is lowered, the lower step is used for concrete maintenance, and the upper step is excavated by the main excavation arm assembly (2), and parallel slag is discharged in coordination with the construction machinery. After the slag discharge and trimming process is completed, the upper step is sprayed initially by the front arch spray arm; S2: The trestle is retracted, and the support materials of the frame and anchor bolts are carried out on the upper steps, and the excavation and slag removal operations as well as the bottom cleaning and frame and anchor bolt operations are carried out on the lower steps; S3: After the upper process is completed, the trestle is lowered to carry out the spraying of the upper step and the spraying of the lower step; S4: After the operation is completed, the trestle is folded up, and the integrated mobile unit starts to move the vehicle forward, and after moving to the operating position, the next cycle of operation begins.

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