Slurry pipe extending device

Abstract

The utility model discloses a mud pipe extending device which solves the problem that in the prior art, a shield tunneling machine extending pipeline influences follow-up construction. The device comprises a front trailer, a rear trailer and a platform trolley capable of moving relative to the front trailer and / or the rear trailer, a front pipeline is arranged on the front trailer and the platform trolley, and the front pipeline can move relative to the front trailer; the front trailer is provided with a sewage collecting tank and a slurry collecting mechanism for collecting slag liquid in a pipeline into the sewage collecting tank; the rear trailer is provided with a pipe replacing crane used for hoisting the extending pipeline. A floating connecting mechanism is arranged at the connecting end, used for being connected with the extending pipeline, of the front pipeline. The pipeline can be placed at positions such as a box culvert or a cast-in-place ground which do not interfere with secondary construction of a tunnel, the universality is high, the pipeline can be arranged at different positions by replacing different bent pipes or using hoses at the tail, the problem of secondary arrangement of the pipeline during subsequent construction of the tunnel is solved, a large amount of manpower, material resources and construction cost are saved, and the construction efficiency is improved. And the construction efficiency of the tunnel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine pipeline extension, in particular to a mud pipe extension device. Background Art

[0002] Pipeline extension is an important step in slurry shield construction. At present, most of the slurry pipelines of various forms of pipeline extension devices are hung on the wall of the tunnel segment through tooling. It will have an impact on the subsequent secondary construction of some tunnels, such as the construction of walkways on both sides of railway tunnels, the construction of side walls of highway tunnels, and the secondary lining of river-crossing tunnels. Before construction, the pipelines on the tunnel wall need to be arranged for the second time. This process requires the pipelines to be disconnected, causing the shield machine to stop, affecting the overall construction efficiency of the tunnel.

[0003] In recent years, with the implementation of a large number of river-crossing tunnel projects, slurry shield machines have been widely used. As a key step in slurry shield construction, pipeline extension has led to the emergence of a variety of pipeline extension devices and methods, such as the Chinese patent for the construction method of tunnel external shield machine pipeline extension and tunnel excavation construction method with application number 202210137505.7, which uses pipeline extension outside the tunnel for continuous operation, but the pipeline is still suspended on the tunnel wall, which may affect the subsequent construction of the tunnel. Therefore, it is necessary to design a new pipeline extension device to transfer the extended pipeline to the box culvert or cast-in-place ground to minimize its impact on subsequent construction and improve the efficiency of subsequent tunnel construction. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a mud pipe extension device, which solves the problem in the prior art that the extension pipeline of the shield machine affects the subsequent construction.

[0005] The technical solution of the utility model is implemented as follows: a mud pipe extension device, including a front trailer and a rear trailer, and also including a platform trolley that can move relative to the front trailer and / or the rear trailer. The front trailer and the platform trolley are provided with a front pipeline, and the front pipeline can move relative to the front trailer; the front trailer is provided with a dirt collecting box and a slurry collecting mechanism for collecting the slag liquid in the pipeline into the dirt collecting box; the rear trailer is provided with a pipe changing crane for lifting the extension pipeline; preferably, the pipe changing crane is arranged on one side of the rear trailer. The connection end of the front pipeline for connecting with the extension pipeline is provided with a floating connection mechanism to ensure the smooth connection of the extension pipeline.

[0006] Further preferably, a sliding extension pipe rack for supporting the front pipeline is slidably provided on the front trailer; a connecting flange is provided on the front pipeline, and the front pipeline laying mode is switched through the connecting flange.

[0007] Further preferably, the pulp collecting mechanism includes a pulp collecting port arranged at the front pipeline connection end and a sewage pump arranged on the front trailer, the liquid inlet of the sewage pump is detachably connected to the pulp collecting port through a hose, and the liquid outlet of the sewage pump is connected to the sewage collecting tank.

[0008] Further preferably, the floating connection mechanism includes an expansion joint and a compensation pipe assembly connected to the connection end of the expansion joint, and the compensation pipe assembly is connected to the platform trolley through a floating member.

[0009] Further preferably, the compensating tube assembly comprises a telescopic compensating tube, an outer tube or an inner tube of the telescopic compensating tube is connected to the expansion joint via a flange, and an inner tube or an outer tube of the telescopic compensating tube is connected to the flange via an axially arranged oil cylinder.

[0010] Further preferably, the floating member includes left and right sliding members and up and down floating members; the compensation pipe assembly can be adjusted up and down and left and right to facilitate connection with the extension pipeline, while also preventing the pipeline from locking during shield machine excavation and reducing the pipeline damage rate.

[0011] Further preferably, the left and right sliding members include a slide rail arranged on the platform trolley and a slide seat slidably arranged on the slide rail; and the up and down floating members are arranged on the slide seat.

[0012] As a preferred embodiment, the up and down floating members include a lifting cylinder, and a pipe rack for supporting the telescopic compensation pipe is provided on the lifting cylinder.

[0013] As another preferred embodiment, the up and down floating member comprises a fixed sleeve fixed on the slide seat, and the bottom of the pipe rack is sleeved in the fixed sleeve and connected via a spring.

[0014] The beneficial effects of the utility model are as follows: the new mud pipe extension device of the utility model proposes a method for placing pipelines in box culverts or cast-in-place ground and other locations that do not hinder the secondary construction of the tunnel. It has strong versatility and can replace different elbows or use hoses at the tail to achieve the arrangement of pipelines in different locations, solving the problem of secondary arrangement of pipelines during subsequent construction of the tunnel, saving a lot of manpower, material resources and construction costs, and improving the construction efficiency of the tunnel. In addition, the setting of the floating connection mechanism of the utility model ensures the rapid connection of the front pipeline and the extension pipeline, compensates for the displacement difference of the pipeline docking in multiple directions, and can also prevent the pipeline from being locked during the tunneling of the shield machine, reducing the damage rate of the pipeline and the pipeline rack, so as to adapt to the smooth connection of the pipeline during the small turning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the initial state of the mud pipe extension device of the utility model.

[0017] Figure 2 It is a schematic diagram of the tail end face of the device of the utility model.

[0018] Figure 3 It is a schematic diagram of the floating connection mechanism of the utility model.

[0019] Figure 4 The utility model adds a schematic diagram of the extension pipeline to the mud pipe extension device. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1As shown, in Example 1, a mud pipe extension device includes a front trailer 1 and a rear trailer 2, and also includes a platform trolley 7 that can move relative to the front trailer 1 and / or the rear trailer 2. The platform trolley described in this solution is not limited to the wheels moving independently to realize the movement of the trolley. The platform trolley 7 is a pipe rack supported force platform, and a walking wheel is installed underneath it, which can walk on a box culvert or a cast-in-place platform. The movement of the platform trolley is independent of the movement of the front trailer 1 and the rear trailer 2, and the movements of the platform trolley on the box culvert 3 or the cast-in-place ground do not interfere with each other; this embodiment takes the movement of the front trailer 1, the rear trailer 2, and the platform trolley 7 on the box culvert 3 as an example; the pipeline extension device in which the pipeline is placed on the box culvert is not limited to the box culvert, and the positions located on various prefabricated parts or cast-in-place planes at the rear of the tunnel all belong to the extension scheme of this scheme. As a preferred scheme, the platform trolley is located between the front trailer 1 and the rear trailer 2. The front trailer 1 and the platform trolley 7 are provided with a front pipeline 4, and the front pipeline 4 can move relative to the front trailer 1, and the end of the front pipeline 4 is connected to the platform trolley; when the front trailer moves forward, the front pipeline 4 and the platform trolley 7 can remain relatively still, thus forming a pipeline extension device. The front pipeline 4 is connected by multiple sections of segmented pipes. The front trailer 1 is the running carrier of the front pipeline 4, which is connected to other trailers in the front to provide space for the movement of the entire pipeline. The front trailer 1 is provided with a dirt collecting box 5 and a slurry collecting mechanism 8 for collecting the slag liquid in the pipeline into the dirt collecting box 5. The dirt collecting box 5 provides storage space for the slurry remaining in the pipeline when changing the pipe; before the pipeline is disconnected, the slurry remaining in the pipeline is collected into the dirt collecting box by the slurry collecting mechanism. The rear trailer 2 is provided with a pipe changing crane 9 for lifting the extension pipeline 10; the pipe changing crane 9 is arranged on one side of the rear trailer 2, such as Figure 2 As shown. In the suspension mode, the crane and the pipe section can be moved to the reserved interface of the front trailer, and the pipeline extension is realized at the front trailer; in the mode where the pipeline is arranged in other positions such as the box culvert, the crane pipe section and the like are arranged with the rear trailer, and the pipeline extension is realized at the rear trailer, and the pipe-changing crane 9 can move left and right and front and back along the track to meet the lifting requirements of the extended pipe section. The rear trailer 2 is the operating carrier of the pipe-changing crane, which provides space for the movement of the crane and the storage of the pipe section. The connection end of the front pipeline 4 for connecting to the extension pipeline 10 is provided with a floating connection mechanism 6. The setting of the floating connection mechanism ensures the rapid connection of the front pipeline 4 and the extension pipeline 10, which not only compensates for the displacement difference of the pipeline docking, but also prevents the pipeline from locking during the excavation of the shield machine, thereby reducing the damage rate of the pipeline.

[0022] This embodiment takes the mode of arranging pipelines in box culverts and other locations as an example; in this mode, when the shield machine is excavating, the pipeline length during the shield machine excavation is compensated by the pipeline extension device on the front trailer, and the pipeline extension device moves backward relative to the trailer as a whole. The mud pipe is guided to the box culvert or the upper part of the cast-in-place ground through the pipeline elbow, and the platform trolley is stationary at this time. When the excavation length reaches the pipeline extension limit, the shield machine stops excavating, the pipeline is disconnected at the pipe replacement position, and the platform trolley moves forward with the pipeline extension device. After moving to the designated position, the pipe section is hoisted by the pipe replacement crane to extend the pipeline. At this time, the floating connection mechanism can compensate for the displacement difference when the pipe section is docked, so that the pipe section can be smoothly connected to the extended pipeline. According to the requirements of the pipeline position for subsequent construction, the elbow or connecting hose can be replaced to meet the requirements of different pipeline positions. Finally, the extended pipeline is fixed in the tunnel using a pipe rack. This technical solution can efficiently fix the pipeline directly to the box culvert and the cast-in-place ground. As a result, it can better avoid the secondary layout of the pipeline caused by the interference between the shield machine extension pipeline and the subsequent secondary construction of the tunnel, thereby improving the efficiency of the subsequent secondary construction of the tunnel.

[0023] like Figure 3 As shown in the figure, embodiment 2 is a mud pipe extension device. In this embodiment, a sliding extension pipe rack 11 for supporting the front pipeline 4 is slidably provided on the front trailer 1; the sliding extension pipe rack 11 is a relative movement device between the pipeline and the trailer, and the relative movement between the device and the trailer is used to compensate for the change in the length of the pipeline during shield tunneling. The front pipeline 4 is provided with a connecting flange 12, and the laying mode of the front pipeline 4 is switched through the connecting flange 12. That is, when the pipeline needs to be suspended on the wall of the pipe segment, the front pipeline 4 can be connected by the attached flange 12. Figure 1 The middle connection flange is disconnected and connected to the elbow to realize the suspension of the pipeline. The pipe section crane can be moved to the front trailer accordingly. At this time, the device can adapt to the use of pipeline suspension method. When the pipeline needs to be arranged on the box culvert or other ground of the cast-in-place ground, according to the attached Figure 1 By connecting different elbows using the connection flange 12, it is possible to switch between the mode of hanging the pipeline on the wall of the pipe segment and placing the pipeline in other locations such as the box culvert.

[0024] The slurry collecting mechanism 8 in this embodiment includes a slurry collecting port 81 arranged at the connection end of the front pipeline 4 and a sewage pump 82 arranged on the front trailer 1. The slurry collecting port 81 is connected to the front pipeline 4. The sewage pump is used to pump the residual slurry through the slurry collecting port 8 to the sewage collecting box or the slurry inlet pipe when changing the pipe. It is connected to the mud pipeline and is equipped with a gate valve. The liquid inlet of the sewage pump 82 is detachably connected to the slurry collecting port 81 through a hose, and the liquid outlet of the sewage pump 82 is connected to the sewage collecting box 5. When the pipeline is disconnected for connecting the extension pipeline 10, the slurry collecting port 81 and the sewage pump 82 are connected to the sewage collecting box 5 by using a hose to collect the residual slurry in the main pipeline; after the slurry collection is completed, the connection with the sewage collecting box 5 is disconnected and the slurry collecting port 81 is closed.

[0025] The floating connection mechanism 6 in this embodiment includes an expansion joint 601 and a compensation pipe assembly 602 connected to the connection end of the expansion joint 601. The expansion joint 601 and the compensation pipe assembly 602 serve as compensation devices for pipeline extension and are used to compensate for the length direction of the pipeline. The compensation pipe assembly 602 is connected to the platform trolley 7 through a floating member 603. The floating member 603 is used to supplement the displacement difference in the up-down and left-right directions when the pipeline is docked.

[0026] The other structures are the same as those in Example 1.

[0027] Embodiment 3, a mud pipe extension device, the floating member 603 in this embodiment includes a left and right sliding member and an up and down floating member. The left and right sliding member is used to supplement the displacement difference in the horizontal direction, and the up and down floating member is used to supplement the displacement difference in the vertical direction. The floating member enables the compensation pipe assembly to move left and right and up and down, improves the degree of freedom of pipeline connection, compensates for the displacement difference of pipeline docking, and prevents the pipeline from locking when the shield machine is excavating, thereby reducing the damage rate of the pipeline.

[0028] In this embodiment, as a preferred solution, the left and right sliding members include a slide rail 603-1 set on the platform trolley 7 and a slide seat 603-2 slidably set on the slide rail 603-1; the left and right displacement adjustment is achieved by sliding the slide seat left and right along the slide rail. The up and down floating members are set on the slide seat 603-2 and slide synchronously with the slide seat. In this embodiment, as a preferred solution, the up and down floating members include a lifting cylinder 603-3, and the lifting cylinder 603-3 is provided with a pipe rack 603-4 for supporting the telescopic compensation pipe 602-1. Under the action of the lifting cylinder, the pipe rack drives the telescopic compensation pipe to move up and down to compensate for the displacement difference in the up and down directions when the pipelines are docked. In addition, the up and down floating members can also be used or other lifting members that can move up and down, such as cylinders or gear teeth.

[0029] The other structures are the same as those in Example 2 or 3.

[0030] Embodiment 4, a mud pipe extension device, this embodiment is different from embodiment 3 in that the up and down floating member in this embodiment includes a fixed sleeve fixed on the slide 603-2, and the bottom of the pipe rack 603-4 is sleeved in the fixed sleeve and connected by a spring. This embodiment uses the up and down floating of the spring to drive the pipe rack 603-4 to move up and down, so as to compensate for the displacement difference in the up and down direction when the pipelines are docked.

[0031] The compensation pipe assembly 602 in this embodiment includes a telescopic compensation pipe 602-1, the outer pipe of the telescopic compensation pipe 602-1 is connected to the expansion joint 601 through a flange, and the inner pipe of the telescopic compensation pipe 602-1 is connected to the flange through an axially arranged oil cylinder 602-2. Alternatively, the inner pipe of the telescopic compensation pipe 602-1 is connected to the expansion joint 601 through a flange, and the outer pipe of the telescopic compensation pipe 602-1 is connected to the flange through an axially arranged oil cylinder 602-2. Under the action of the oil cylinder 602-2, the telescopic compensation pipe can be axially extended and retracted to compensate for the displacement difference in the length direction of the pipeline when the pipelines are docked.

[0032] The other structures are the same as those in Example 3.

[0033] like Figure 4 As shown, when the pipeline needs to be laid in the box culvert or other ground of the cast-in-place ground, the device can be attached Figure 1 Assembly, the specific process of this method is when the shield machine starts excavation (attached Figure 1 state), the hose between the slurry collecting mechanism and the dirt collecting box is disconnected, the front and rear trailers move forward, the sliding extension pipe rack 11 of the front pipeline 4, the platform trolley and other relative positions are fixed to the tunnel, and under the action of the floating connection mechanism, the freedom of the pipe rack can be improved to prevent the pipeline from being locked; after the shield machine completes one step of excavation (see Appendix Figure 4 The slurry collecting mechanism is connected to the hose between the dirt collecting box to collect the residual slurry between the front and rear gate valves in the pipeline. After the slurry collection is completed, the main pipeline connection and the hose between the dirt collecting box and the slurry collecting mechanism are disconnected. The sliding extension pipe rack and the platform trolley of the front pipeline 4 move forward under the action of the device power mechanism to the designated position (i.e., the attached Figure 1 The pipe section is hoisted by the pipe replacement crane and connected to the disconnected part of the main pipeline. The floating connection mechanism is used to make up for the displacement difference of the docking flange in all directions. This cycle is repeated to achieve the extension of the shield machine mud pipeline placed on the box culvert or cast-in-place ground. Figure 4 The device is in the posture when the shield machine completes the excavation, compared with the posture when the shield machine starts excavation (see Appendix Figure 1 ), in this state, the distance between the platform trolley 7 and the trailer increases, the pipeline extension device moves backward a certain distance (a pipe section length) relative to the trailer as a whole, and the slurry collection port is connected to the sewage collecting box or the slurry inlet pipe through a sewage pump.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mud pipe extension device, comprising a front trailer (1) and a rear trailer (2), characterized in that: The invention also comprises a platform trolley (7) which can move relative to the front trailer (1) and / or the rear trailer (2); the front trailer (1) and the platform trolley (7) are provided with a front pipeline (4), and the front pipeline (4) can move relative to the front trailer (1); the front trailer (1) is also provided with a dirt collecting box (5) and a pulp collecting mechanism (8) for collecting slag liquid in the pipeline into the dirt collecting box (5); the rear trailer (2) is provided with a pipe replacement crane (9) for lifting the extension pipeline (10); and a floating connection mechanism (6) is provided at the connection end of the front pipeline (4) for connecting with the extension pipeline (10).

2. The mud pipe extension device according to claim 1, characterized in that: The front trailer (1) is slidably provided with a sliding extension pipe rack (11) for supporting the front pipeline (4); the front pipeline (4) is provided with a connecting flange (12), and the laying mode of the front pipeline (4) can be switched through the connecting flange (12).

3. The mud pipe extension device according to claim 1, characterized in that: The pulp collecting mechanism (8) comprises a pulp collecting port (81) arranged at the connection end of the front pipeline (4) and a sewage pump (82) arranged on the front trailer (1); a liquid inlet of the sewage pump (82) is detachably connected to the pulp collecting port (81) via a hose, and a liquid outlet of the sewage pump (82) is connected to the sewage collecting box (5).

4. The mud pipe extension device according to any one of claims 1 to 3, characterized in that: The floating connection mechanism (6) comprises an expansion joint (601) and a compensation pipe assembly (602) connected to a connection end of the expansion joint (601); the compensation pipe assembly (602) is connected to the platform trolley (7) via a floating member (603).

5. The mud pipe extension device according to claim 4, characterized in that: The compensation pipe assembly (602) comprises a telescopic compensation pipe (602-1), the outer pipe or the inner pipe of the telescopic compensation pipe (602-1) being connected to the expansion joint (601) via a flange, and the inner pipe or the outer pipe of the telescopic compensation pipe (602-1) being connected to the flange via an axially arranged oil cylinder (602-2).

6. The mud pipe extension device according to claim 5, characterized in that: The floating member (603) comprises a left and right sliding member and an up and down floating member.

7. The mud pipe extension device according to claim 6, characterized in that: The left and right sliding members comprise a slide rail (603-1) arranged on the platform trolley (7) and a slide seat (603-2) slidably arranged on the slide rail (603-1); the up and down floating members are arranged on the slide seat (603-2).

8. The mud pipe extension device according to claim 7, characterized in that: The up and down floating parts include a lifting oil cylinder (603-3), and a pipe rack (603-4) for supporting the telescopic compensation pipe (602-1) is provided on the lifting oil cylinder (603-3).

9. The mud pipe extension device according to claim 7, characterized in that: The up and down floating member comprises a fixed sleeve fixed on the slide seat (603-2), and the bottom of the pipe rack (603-4) is sleeved in the fixed sleeve and connected via a spring.

10. The mud pipe extension device according to claim 1, 8 or 9, characterized in that: The pipe-changing crane (9) is arranged on one side of the rear trailer (2).

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