Movable cutter head welding platform

Abstract

A movable cutter head welding platform comprises an existing track, two slag hopper cars, buttresses and a steel frame, the two slag hopper cars are symmetrically installed on the existing track, each slag hopper car is provided with a buttress, and the buttresses are connected by the steel frame to form an integral structure. The movable cutter head welding platform provided by the utility model realizes efficient cutter head welding and shield body assembly collaborative operation in a narrow double-section chamber under a complex environment. The platform utilizes the combination of the existing track and the slag hopper car to form a stable and flexible mobile support system, can adapt to different section types, breaks through the limitations of traditional construction equipment in the section mutation area, utilizes the moving ability of the platform, enables the cutter head welding operation to be seamlessly transferred to a non-lifting area when the shield body assembly occupies the lifting area, thereby realizing the parallel advancement of processes, significantly improves the shield machine assembly efficiency, reduces the construction cost, and enhances the flexibility and adaptability of construction.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling equipment technology, and in particular to a movable cutterhead welding platform. Background Technology

[0002] In deep-buried launching chamber engineering of water conveyance tunnels, complex geological conditions often lead to asymmetrical cross-sectional shapes of underground chambers. Taking the 87m chamber involved in this technology as an example, part of the tunnel body passes through a fractured zone. To reduce the excavation risk, the chamber adopts a double-section structure: the first 45m section is a mushroom-shaped cross-section, and the last 42m section is changed to a city gate-shaped cross-section due to the requirements of surrounding rock stability.

[0003] This abrupt change in cross-section leads to the following technical obstacles for traditional construction equipment: the bridge crane track is interrupted due to the abrupt change in cross-section shape. While a bridge crane hoisting system is used in the mushroom-shaped area, it is impossible to arrange hoisting equipment in the city gate-shaped area. As a result, some tunnel areas lack hoisting equipment support. Therefore, when the shield assembly occupies the hoisting area, the cutterhead will be forced to interrupt welding because it cannot be hoisted to the non-covered area, resulting in serialization of the process and reduced assembly efficiency of the tunnel boring machine.

[0004] The aforementioned technical bottlenecks severely restrict the collaborative capabilities of the tunnel boring machine assembly process in narrow tunnels. Therefore, in a dual-section environment, how to achieve the coordinated advancement of cutterhead welding and shield assembly processes is the technical problem that this utility model aims to solve. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a movable cutterhead welding platform. Through this welding platform, the cutterhead welding and shield assembly processes can be efficiently coordinated in the cavern environment with abrupt changes in cross-section, breaking through the rigid constraints of cross-section changes on process coordination and improving the overall efficiency of shield machine assembly and construction.

[0006] To achieve the above objectives, the present invention provides a movable cutterhead welding platform, characterized in that it includes an existing track, two slag hopper cars, supports, and a steel frame. The two slag hopper cars are symmetrically installed on the existing track, and each slag hopper car is equipped with a support. The supports are connected by the steel frame to form an integral structure.

[0007] As a further improvement of this utility model, it also includes a wire rope and a traction device, wherein the slag hopper car is connected to the traction device via the wire rope.

[0008] As a further improvement of this utility model, connecting ears are provided on both the front and rear sides of the slag hopper car, and the wire rope is connected to the connecting ears on the front or rear side according to the direction of travel of the slag hopper car.

[0009] As a further improvement of this utility model, it also includes a connecting beam, which connects the two dump trucks together.

[0010] As a further improvement of this utility model, the slag hopper car has a boat-shaped structure, with a groove in the middle for placing welding tools and materials, and horizontal platforms at both ends, with the support blocks set on the horizontal platforms.

[0011] As a further improvement of this utility model, each slag dump truck is equipped with two supports, and a total of four supports are provided. The four supports are connected by a steel frame to form a rectangular structure, and the top surface of the steel frame is flush with the top surface of the supports.

[0012] As a further improvement of this utility model, the steel frame between the supports is in the shape of an inverted K.

[0013] The beneficial effects of this utility model are as follows: The mobile cutterhead welding platform provided by this utility model achieves efficient collaborative operation of cutterhead welding and shield assembly in complex environments such as narrow double-section tunnels through an innovative combination of existing tracks, slag hoppers, and supports. This platform utilizes the combination of existing tracks and slag hoppers to form a stable and flexible mobile support system, capable of adapting to different cross-section types. It overcomes the limitations of traditional construction equipment in areas with abrupt cross-section changes. Utilizing the platform's mobility, when shield assembly occupies the hoisting area, cutterhead welding operations can be seamlessly transferred to non-hoisting areas, thereby achieving parallel progress of processes, significantly improving the efficiency of shield machine assembly, reducing construction costs, and enhancing the flexibility and adaptability of construction. Attached Figure Description

[0014] Figure 1 This is a side view of the cutterhead welding platform;

[0015] Figure 2 This is a three-dimensional schematic diagram of the cutting head welding platform;

[0016] Figure 3 This is a schematic diagram showing the cutter head placed on the cutter head welding platform;

[0017] Marking description: 1. Existing track, 2. Two slag hopper cars, 2. Connecting lug, 21. Groove, 22. Horizontal platform, 23. Connecting beam, 3. Four supports, 4. Steel frame, 5. Cutterhead, 6. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0019] like Figure 1-3 As shown, a movable cutterhead welding platform is suitable for the coordinated advancement of cutterhead welding and shield assembly processes in narrow cavern environments with abrupt changes in cross-section.

[0020] The cutterhead welding platform includes an existing track 1, two slag hopper cars 2, a connecting beam 3, four supports 4, and a steel frame 5.

[0021] Two slag dump cars 2 are symmetrically installed on the existing track 1. Each slag dump car 2 has two supports 4 welded on it, for a total of four supports 4. The four supports 4 are connected by a steel frame 5 to form an integral structure. The cutter head 6 is placed on the four supports 4 and welded on.

[0022] The two slag dump cars 2 are welded together by a connecting beam 3. The connecting beam 3 enables the two slag dump cars 2 to move synchronously, avoiding skewing due to uneven tracks or uneven loads, and improving overall stability.

[0023] The slag dump car 2 is connected to the traction equipment (not shown in the figure) via a steel wire rope (not shown in the figure). The traction equipment pulls the slag dump car 2, enabling it to move on the existing track 1. Specifically, the slag dump car 2 is provided with connecting lugs 21 on both the front and rear sides. The steel wire rope is connected to the connecting lugs 21 on the front or rear side depending on the direction of travel of the slag dump car 2, thereby realizing bidirectional traction.

[0024] The slag hopper truck 2 has a boat-shaped structure with a groove 22 in the middle for placing welding tools and materials, and horizontal platforms 23 at both ends. Supports 4 are welded to the horizontal platforms 23 at both ends. This structure is reasonably laid out, with storage space in the middle to improve platform utilization and reduce the space occupied by construction equipment, while the welded supports 4 at both ends ensure uniform stress distribution and improve the stability and reliability of the platform.

[0025] The four supports 4 are connected by a steel frame 5 to form a rectangular structure, and the top surface of the steel frame 5 is flush with the top surface of the supports 4. This rectangular structure improves the stability of the cutterhead welding platform, and the top surfaces of the supports 4 and the steel frame 5 form a working surface, providing reliable support and positioning for the cutterhead 6 and ensuring the accuracy of the welding operation.

[0026] The steel frame 5 between the piers 4 is in the shape of an inverted K. The K-shaped steel frame 5 can ensure structural strength while reducing its own weight and improving the overall stability of the platform.

[0027] The workflow of the above-mentioned cutterhead welding platform is as follows:

[0028] I. Equipment Placement. After transporting the cutterhead 6 to the hoisting area inside the shield assembly tunnel, the cutterhead 6 is hoisted onto the support 4 using a bridge crane.

[0029] II. Process Transfer. Disassemble the bridge crane hooks. Using a winch or other traction equipment, connect the slag hopper 2 to the connecting lugs 21 via steel wire ropes to move the slag hopper 2 along the existing track 1, thus moving the cutterhead welding platform to the non-lifting area at the other end of the tunnel to begin the cutterhead 6 welding work. The welder uses the welding tools and related materials built into the groove 22 in the middle of the slag hopper 2 to weld the cutterhead 6.

[0030] III. Reset Cycle. After the welding of cutterhead 6 is completed and the shield body is assembled, the cutterhead welding platform is pulled back to the hoisting area in the reverse direction to begin the hoisting of cutterhead 6.

[0031] The above-described embodiments are merely illustrative of this utility model. Any equivalent embodiments made by those skilled in the art without departing from the technical features disclosed in this utility model, and without departing from the technical features of this utility model, shall still fall within the scope of the technical features of this utility model.

Claims

1. A movable cutterhead welding platform, characterized in that: It includes existing tracks, two slag hopper cars, supports, and a steel frame. The two slag hopper cars are symmetrically installed on the existing tracks, and each slag hopper car is equipped with a support. The supports are connected by a steel frame to form an integral structure.

2. The movable cutterhead welding platform according to claim 1, characterized in that: It also includes wire ropes and traction equipment, with the slag hopper car connected to the traction equipment via wire ropes.

3. The movable cutterhead welding platform according to claim 2, characterized in that: The slag dump truck is equipped with connecting lugs on both the front and rear sides, and the wire rope is connected to the connecting lugs on the front or rear sides depending on the direction of travel of the slag dump truck.

4. The movable cutterhead welding platform according to claim 1, characterized in that: It also includes connecting beams, which connect two dump trucks together.

5. A movable cutterhead welding platform according to claim 1, characterized in that: The slag hopper car has a boat-shaped structure with a groove in the middle for placing welding tools and materials, and horizontal platforms at both ends. The supports are set on the horizontal platforms.

6. A movable cutterhead welding platform according to claim 1, characterized in that: Each dump truck is equipped with two supports, and there are a total of four supports. The four supports are connected by a steel frame to form a rectangular structure, and the top surface of the steel frame is flush with the top surface of the supports.

7. A movable cutterhead welding platform according to claim 1, characterized in that: The steel frame between the supports is in the shape of an inverted K.

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