Pipe replacing device for tail of rear matched trailer of dual-mode shield tunneling machine and pipe replacing construction technology of pipe replacing device

Abstract

The invention provides a pipe replacing device for the tail of a rear matched trailer of a dual-mode shield tunneling machine and a pipe replacing construction technology of the pipe replacing device. The pipe replacing device comprises a walking frame, a slurry pipe storage support, a transverse translation rail, a longitudinal translation rail and a lifting mechanism. The slurry pipe storage support is installed on one side of the walking frame and used for temporarily storing slurry pipes. The transverse translation track is distributed in the transverse direction of the walking frame, and a lifting mechanism is installed on the transverse translation track and used for extracting and transferring the slurry pipe in the slurry pipe storage support. The longitudinal translation track is arranged on the other side of the walking frame and distributed in the longitudinal direction of the walking frame, and a lifting mechanism is installed on the longitudinal translation track and used for moving the slurry pipe transferred to the side by a certain distance in the longitudinal direction. According to the scheme, the working difficulty of pipe replacement construction is simplified, the pipe replacement efficiency is improved, and the safety is also greatly improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine technology, and more specifically, to a pipe replacement device and its pipe replacement construction process for the rear of a dual-mode tunnel boring machine's supporting trailer. Background Technology

[0002] With the continuous development of the national economy and science and technology, shield tunneling technology has gradually become more sophisticated and is increasingly becoming the preferred technology for constructing tunnels in water conservancy projects. Compared with other construction technologies, shield tunneling has the advantages of small footprint, minimal impact on the external environment, high degree of automation, low labor intensity, and fast construction speed. As construction environments and geological conditions become increasingly complex, dual-mode shield tunneling machines are increasingly being used in practical construction.

[0003] As the geological environment of construction becomes increasingly complex, the original single-mode earth pressure balance shield tunneling machine needs to be structurally modified in order to meet the on-site construction requirements.

[0004] However, during the use of the modified dual-mode tunnel boring machine, due to the lack of specific design for dual-mode tunnel boring machines, the defects in the pipe-changing device structure did not meet the actual needs of construction site operations. Specifically, when the tunnel boring machine was excavating in slurry mode, it was necessary to continuously extend the slurry pipeline, but the original pipe-changing structure was inconvenient for personnel to use, the connection operation process was not smooth, and the operation efficiency was low. This resulted in the pipe-changing operation being time-consuming and auxiliary procedures being lengthy.

[0005] Therefore, it is necessary to develop an efficient pipe replacement device to improve the operational efficiency of extending the mud pipeline during the tunneling process of a dual-mode shield machine. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a pipe replacement device and its construction process for the rear of a dual-mode tunnel boring machine's trailer, which offers higher pipe replacement efficiency, simpler and safer pipe replacement operations, and reusable functionality.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a pipe-changing device for the rear of a dual-mode tunnel boring machine's supporting trailer, comprising a traveling frame, a mud pipe storage bracket, a transverse translation track, a longitudinal translation track, and a lifting mechanism; The mud pipe storage bracket is installed on one side of the walking frame and is used to temporarily store mud pipes. The lateral translation track is distributed laterally along the walking frame, and a lifting mechanism is installed on the lateral translation track for the extraction and transfer of mud pipes in the mud pipe storage bracket. The longitudinal translation track is located on the other side of the traveling frame and is distributed along the longitudinal direction of the traveling frame. A lifting mechanism is installed on the longitudinal translation track to move the mud pipe transferred to this side a certain distance longitudinally.

[0008] Preferably, an operating platform is provided on the other side of the walking frame, and the operating platform extends forward from the other side of the walking frame to the front end beyond the walking frame.

[0009] Preferably, the frame structure of the walking frame is composed of HW200×200mm H-beams.

[0010] Preferably, the lifting mechanism is an electric hoist.

[0011] Preferably, both the transverse and longitudinal translation tracks are made of I-beams.

[0012] Preferably, the profile of the mud pipe storage bracket is channel steel, the storage spacing of the mud pipe storage bracket is 4m, the total height is 1.1m, and it is provided with at least two layers.

[0013] Preferably, the bottom end of the walking frame is equipped with walking wheels.

[0014] A pipe replacement construction process for the rear of a dual-mode tunnel boring machine's supporting trailer, implemented based on the aforementioned pipe replacement device for the rear of a dual-mode tunnel boring machine's supporting trailer, includes the following steps: S1. The mud pipeline is transported to the pipe replacement device location by external transportation equipment; S2. Operate the lifting mechanism assembly on the transverse translation track to unload the mud pipe and hoist it into the mud pipe storage bracket on the left. S3. When the dual-mode shield tunneling machine completes the inner ring excavation and it is necessary to extend the mud circulation pipeline, use the lifting mechanism on the transverse translation track to hoist the mud pipe to the mud pipe installation area on the right side, and at the same time remove the mud pipe joint on the right side to be installed. S4. Use the lifting mechanism on the longitudinal translation track to hoist the existing mud pipe to be installed and connect it with the newly added mud pipe for installation. S5. Tighten the connecting bolts between the mud pipes into place; S6. Release the lifting mechanism and restore the lifting mechanisms on the horizontal and vertical translation tracks to their original positions; S7. After the pipe replacement operation is completed, the trailer attached to the tunnel boring machine will drag the traveling frame forward until the next pipe replacement operation begins.

[0015] Preferably, the overall length of the walking frame is ≥6m.

[0016] Preferably, there are two lateral translation tracks and one longitudinal translation track.

[0017] This invention has outstanding substantive features and significant progress compared to the prior art. Specifically, this invention uses this device to replace the traditional purely manual transfer. It provides walking ability with the help of a walking frame and, with the help of reasonable space design, can temporarily store mud pipes in mud pipe storage racks. When in use, the mud pipes are transferred to the other side using a lateral translation track and a lifting mechanism, and then the mud pipes are docked using a longitudinal translation track and a lifting mechanism. The overall mud pipe operation process is completed. Compared with the traditional purely manual transfer, the efficiency is greatly improved and the safety is also improved.

[0018] Specifically, in comparison, the traditional method requires manual disassembly and hoisting of the mud pipes, and each pipe replacement takes 2 hours; during the manual disassembly, hoisting and installation of the mud pipes, personnel do not have a dedicated working platform, which poses a high safety risk; the long pipe replacement process results in low shield tunneling efficiency, averaging 3 rings / day. This device provides a dedicated platform for operators to replace pipelines, reducing the safety risks of personnel operations. The original method of replacing mud pipelines took 2 hours, but using this device, the time for replacing mud pipelines can be shortened to 0.5 hours. This reduces the pipeline replacement time, increases the average daily tunnel boring efficiency by 2 rings, accelerates the overall construction progress, and achieves good economic benefits. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a pipe-changing device for the rear of a dual-mode tunnel boring machine's trailer.

[0020] Figure 2 This is a side view of a pipe-changing device used at the rear of a trailer for a dual-mode tunnel boring machine, according to the present invention.

[0021] Figure 3 This is a top view of a pipe-changing device used at the rear of a trailer for a dual-mode tunnel boring machine, according to the present invention.

[0022] Figure 4 This is a construction process flow diagram of a pipe replacement device for the rear of a dual-mode tunnel boring machine's trailer, as described in this invention.

[0023] In the diagram: 1. Walking frame; 2. Lateral translation track; 3. Longitudinal translation track; 4. Longitudinal electric hoist; 5. Lateral electric hoist; 6. Mud pipe storage bracket; 7. Walking wheels. Detailed Implementation

[0024] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0025] like Figures 1-4As shown, a pipe-changing device for the rear of a dual-mode tunnel boring machine's trailer includes a traveling frame 1, a mud pipe storage bracket 6, a transverse translation track 2, a longitudinal translation track 3, and a lifting mechanism.

[0026] The mud pipe storage bracket 6 is installed on one side of the walking frame 1 for temporary storage of mud pipes. Specifically, in this embodiment, the walking frame 1 is fabricated in three parts: left, middle, and right. The left and right parts are symmetrical, and the middle part is connected by HW200×200mm H-beams to form a frame. The longitudinal direction of the frame structure is connected by 160×88mm I-beams. Since the length of the mud pipe is generally 6m, the overall structure must be over 6m. The frame of the pipe changing device is 8200×3484×4520mm in length, width, and height. The left part mainly serves as the mud pipe storage area, where the mud pipe storage bracket 6 is located. The right side serves as the pipe changing work position, and a 3200×1000mm wide extended operating platform is built at the front end of the right pipe changing position as the work area for personnel.

[0027] The mud pipe storage rack is made of channel steel, with a model size of 100×48×5.3mm. The storage racks are spaced 4m apart and arranged in two layers. Support devices are installed between the upper and lower layers to facilitate the hoisting and storage of mud pipes.

[0028] The transverse translation track 2 is distributed transversely along the walking frame 1. A lifting mechanism is installed on the transverse translation track 2. In this embodiment, it is an electric hoist. There are two transverse translation tracks 2. The mud pipe is lifted by force at two points to avoid imbalance caused by uneven force. It is used for the extraction and transfer of mud pipe in mud pipe storage bracket 6.

[0029] The longitudinal translation track 3 is set on the other side of the walking frame 1 and distributed along the longitudinal direction of the walking frame 1. A lifting mechanism is installed on the longitudinal translation track 3. There is one longitudinal translation track 3, which, together with the lifting mechanisms on the two transverse translation tracks 2, forms three lifting points, which are used to move the mud pipe transferred to this side longitudinally a certain distance.

[0030] In this embodiment, both the transverse translation track 2 and the longitudinal translation track 3 are made of 160×88mm I-beams. The transverse translation track 2 is 4520mm long and consists of two tracks, while the longitudinal translation track 3 is 2510mm long and consists of one track. The transverse translation track 2 is mainly used to lift the mud pipe from the storage area on the left to the installation area on the right. The longitudinal translation track 3 is mainly used to smoothly connect the mud pipe to the original mud pipe interface.

[0031] The longitudinal and lateral lifting mechanisms are a horizontal electric hoist 5 and a longitudinal electric hoist 4, respectively. There is one longitudinal electric hoist 4 with a rated load of 0.5 tons, which can be remotely controlled for movement. There are two horizontal electric hoists 5 with a rated load of 0.5 tons, which can also be remotely controlled for movement. All electric hoists have the functions of lifting up and down and moving forward and backward, which facilitates precise positioning when installing mud pipelines.

[0032] The bottom of the walking frame 1 is equipped with walking wheels, which consist of four sets of universal shield machine wheels. Since there is a height difference between the overall structure of the newly added pipe-changing device and the original shield machine rear trailer position, the wheels need to be heightened. They are made of HW200×200mm H-beams, with a length of 1050mm, and a total of four sets are arranged. They are welded together with the original shield machine universal wheels to achieve the purpose of heightening and ensure that the pipe-changing device moves forward synchronously with the shield machine rear supporting device.

[0033] After all components are installed, install the power and control cables of the electric hoist. First, conduct a no-load test run of the electric hoist, mainly to test its vertical lifting and horizontal movement. After the no-load test is successful, lift the mud pipe for testing. Once the operation is stable in all directions, adjust the longitudinal and lateral lifting of the electric hoist to install the mud pipe.

[0034] The process of pipe replacement using the aforementioned device is illustrated using the Hanjiang-Rongjiang-Lianjiang River system interconnection and subsequent optimization project, section 1, as an example. This section is a portion of the water conveyance main line from the Guxiang branch to the Guanbu intake. This section is a single-line water conveyance, with a designed annual water conveyance flow of 25 m³ / s in 2035 and 40 m³ / s in 2050. The project consists of two shield tunneling sections, constructed using two tunnel boring machines (TBMs) (China Railway 1357# dual-mode TBM and China Railway 1320# slurry balance TBM). Each TBM is approximately 115m long and the process is implemented through the following steps: S1. The mud pipeline is transported to the pipe replacement device location by external transportation equipment; S2. Operate the lifting mechanism assembly on the transverse translation track to unload the mud pipe and hoist it into the mud pipe storage bracket on the left. S3. When the dual-mode shield tunneling machine completes the inner ring excavation and it is necessary to extend the mud circulation pipeline, use the lifting mechanism on the transverse translation track to hoist the mud pipe to the mud pipe installation area on the right side, and at the same time remove the mud pipe joint on the right side to be installed. S4. Use the lifting mechanism on the longitudinal translation track to hoist the existing mud pipe to be installed and connect it with the newly added mud pipe for installation. S5. Tighten the connecting bolts between the mud pipes into place; S6. Release the lifting mechanism and restore the lifting mechanisms on the horizontal and vertical translation tracks to their original positions; S7. After the pipe replacement operation is completed, the trailer attached to the tunnel boring machine will drag the traveling frame forward until the next pipe replacement operation begins.

[0035] This invention has been successfully tested and verified in the shield tunneling operation of the Hanjiang-Rongjiang-Lianjiang River system interconnection and subsequent optimization project, Section 1, and has achieved excellent practical results. The original method of replacing the mud pipe took 2 hours, while using this device, the time can be reduced to 0.5 hours, significantly shortening the pipe replacement time. This increases the average daily shield tunneling efficiency by 2 rings, accelerates the overall construction progress, and achieves good economic benefits.

[0036] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A pipe-changing device for the rear of a trailer supporting a dual-mode tunnel boring machine, characterized in that: Includes a walking frame, mud pipe storage support, lateral translation track, longitudinal translation track, and lifting mechanism; The mud pipe storage bracket is installed on one side of the walking frame and is used to temporarily store mud pipes. The lateral translation track is distributed laterally along the walking frame, and a lifting mechanism is installed on the lateral translation track for the extraction and transfer of mud pipes in the mud pipe storage bracket. The longitudinal translation track is located on the other side of the traveling frame and is distributed along the longitudinal direction of the traveling frame. A lifting mechanism is installed on the longitudinal translation track to move the mud pipe transferred to this side a certain distance longitudinally.

2. The pipe-changing device for the rear of a dual-mode tunnel boring machine's supporting trailer as described in claim 1, characterized in that: An operating platform is provided on the other side of the walking frame, and the operating platform extends forward from the other side of the walking frame to the front end beyond the walking frame.

3. The pipe-changing device for the rear of a dual-mode tunnel boring machine's supporting trailer as described in claim 1, characterized in that: The frame structure of the walking frame is composed of HW200×200mm H-beams.

4. The pipe-changing device for the rear of a dual-mode tunnel boring machine's supporting trailer as described in claim 1, characterized in that: The lifting mechanism is an electric hoist.

5. The pipe-changing device for the rear of a dual-mode tunnel boring machine's supporting trailer as described in claim 1, characterized in that: Both the lateral and longitudinal translation tracks are made of I-beams.

6. The pipe-changing device for the rear of a dual-mode tunnel boring machine's supporting trailer as described in claim 1, characterized in that: The mud pipe storage support is made of channel steel, the storage spacing of the mud pipe storage support is 4m, the total height is 1.1m, and it is equipped with at least two layers.

7. The pipe-changing device for the rear of a dual-mode tunnel boring machine's supporting trailer as described in claim 1, characterized in that: The bottom of the walking frame is equipped with walking wheels.

8. A pipe replacement construction process for the rear of a dual-mode tunnel boring machine's supporting trailer, characterized in that: The implementation of the pipe-changing device for the rear of a dual-mode tunnel boring machine trailer as described in any one of claims 1-7 includes the following steps: S1. The mud pipeline is transported to the pipe replacement device location by external transportation equipment; S2. Operate the lifting mechanism assembly on the transverse translation track to unload the mud pipe and hoist it into the mud pipe storage bracket on the left. S3. When the dual-mode shield tunneling machine completes the inner ring excavation and it is necessary to extend the mud circulation pipeline, use the lifting mechanism on the transverse translation track to hoist the mud pipe to the mud pipe installation area on the right side, and at the same time remove the mud pipe joint on the right side to be installed. S4. Use the lifting mechanism on the longitudinal translation track to hoist the existing mud pipe to be installed and connect it with the newly added mud pipe for installation. S5. Tighten the connecting bolts between the mud pipes into place; S6. Release the lifting mechanism and restore the lifting mechanisms on the horizontal and vertical translation tracks to their original positions; S7. After the pipe replacement operation is completed, the trailer attached to the tunnel boring machine will drag the traveling frame forward until the next pipe replacement operation begins.

9. The pipe replacement construction process for the rear of a dual-mode shield tunneling machine's supporting trailer as described in claim 8, characterized in that: The overall length of the walking frame is ≥6m.

10. The pipe replacement construction process for the rear of a dual-mode tunnel boring machine's supporting trailer as described in claim 8, characterized in that: There are two horizontal translation tracks and one vertical translation track.

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