Deslagging and conveying system of shield tunneling machine

Abstract

The utility model relates to the technical field of shield muck conveying, and discloses a deslagging conveying system of a shield tunneling machine, which comprises a rack, a group of chain wheels are arranged on each of two sides of the rack along the width direction of the rack, the two chain wheels in each group are arranged along the length direction of the rack, and the two chain wheels in each group are connected through a driving chain. Two adjacent chain wheels in two groups are connected through a rotating shaft; a plurality of cleaning scraping plates are arranged between the driving chains on the two sides at intervals, and the bottom of the cleaning scraping plate located on the upper portion makes contact with a supporting plate on the rack; the high-viscosity and high-water-content mud residue soil continuous conveying device can continuously convey high-viscosity and high-water-content mud residue soil, does not need to be shut down for cleaning, and guarantees conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling muck transportation technology, and in particular to a shield tunneling machine muck discharge and transportation system. Background Technology

[0002] Currently, the slurry and excavated soil generated during tunnel boring machine (TBM) construction have high viscosity and high moisture content, and traditional methods of muck removal mainly rely on belt conveyors for transportation. However, belt conveyors have the following significant drawbacks in practical applications:

[0003] First, there is the issue of adhesion. Mud and slag mixtures tend to adhere to the surface of the conveyor belt, leading to a decrease in conveying efficiency and requiring frequent shutdowns for cleaning, which affects the continuity of construction. Second, there is the risk of slippage. In humid environments, the coefficient of friction between the belt and the drive rollers decreases, which may cause slippage and even lead to material accumulation and equipment overload. In addition, the belt conveyor has poor adaptability to large-diameter slag or mixtures containing hard impurities, which can easily cause belt wear or tear.

[0004] Therefore, there is an urgent need for a shield tunneling machine slag conveying system capable of transporting slurry and slag with high viscosity and high water content. Utility Model Content

[0005] The purpose of this invention is to provide a shield tunneling machine slag conveying system that can continuously convey high-viscosity and high-moisture-content mud and slag without stopping the machine for cleaning, thus ensuring conveying efficiency.

[0006] The present invention adopts the following technical solution:

[0007] A shield tunneling machine slag removal and conveying system includes a frame. A set of sprockets is arranged on both sides of the frame along its width direction. Each set of two sprockets is arranged along the length direction of the frame. The two sprockets in each set are connected by a drive chain. Two adjacent sets of sprockets are connected by a rotating shaft. Multiple cleaning scrapers are spaced apart between the drive chains on both sides. The bottom of the upper cleaning scraper contacts a support plate on the frame.

[0008] Preferably, the frame has accommodating cavities on both sides, and the chain wheel and the drive chain are both disposed in the accommodating cavities; clearance grooves for the cleaning scraper to move are provided on the opposite sides of the two accommodating cavities.

[0009] Preferably, the support plate has a through-hole filter; a sewage collection hopper is provided below the frame at the bottom of the support plate; wherein the sewage collection hopper and the support plate are spaced apart by support rods.

[0010] Preferably, an overflow port is provided on one side of the upper part of the sewage collection hopper, and an overflow valve is provided at the overflow port.

[0011] Preferably, the overflow outlet is provided with a filter screen on one side inside the sewage collection hopper.

[0012] Preferably, the filter screen is a convex arc-shaped structure.

[0013] Preferably, a screw conveyor is provided at the bottom of the sewage collection hopper, and the bottom inlet of the screw conveyor is connected to the sewage outlet at the bottom of the sewage collection hopper.

[0014] Preferably, a guide plate is provided inside the sewage collection hopper, and the guide plate is located at the upper part of the sewage collection hopper.

[0015] Preferably, the guide plate has an inverted V-shaped structure, and the guide plate is centrally located inside the sewage collection hopper, with the inclined sides forming a guide channel between the guide plate and the inner wall of the sewage collection hopper.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting two sets of chain wheels on the frame, the rotation of the chain wheels drives the cleaning scraper set on the drive chain to move smoothly, which can push the mud conveyed to the support plate to one end of the frame for discharge. This not only avoids the mud from adhering to the support plate, but also avoids the problem of slippage during mud conveying, ensuring the continuity of conveying and thus ensuring the slag discharge efficiency. Attached Figure Description

[0017] Figure 1 This is a front view of an embodiment of this application;

[0018] Figure 2 This is a side view of an embodiment of this application;

[0019] Figure 3 This is a cross-sectional view of the sewage collection hopper in an embodiment of this application. Detailed Implementation

[0020] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0021] like Figures 1 to 3As shown, the present invention discloses a shield tunneling machine slag removal and conveying system, comprising a frame 1, specifically including two side plates 1-1 on both sides, a support plate 1-2 between the two side plates 1-1, and support legs 1-3 on the side plates 1-1; a set of chain wheels 2 are provided on both sides of the frame 1 along its width direction, and two chain wheels 2 in each set are arranged along the length direction of the frame 1, and the two chain wheels 2 in each set are connected by a drive chain 3, and two adjacent chain wheels 2 in two sets are connected by a rotating shaft, wherein one of the chain wheels 2 is driven by a motor; multiple cleaning scrapers 4 are spaced apart between the drive chains 3 on both sides, and the bottom of the upper cleaning scraper 4 contacts the support plate 1-2 so that as the chain wheel 2 rotates, it drives the drive chain 3 to move, thereby driving the cleaning scraper 4 to push the mud conveyed to the support plate 1-2 to the end of the frame 1 for discharge.

[0022] Furthermore, each side plate 1-1 on both sides of the frame 1 is provided with a receiving cavity 5, and the chain wheel 2 and drive chain 3 are both located in the receiving cavity 5. This reduces the adhesion of mud to the cavity and ensures normal operation. The opposing sides of the two receiving cavities 5 are provided with clearance grooves 6 for the movement of the cleaning scraper 4, ensuring that the cyclical movement of the cleaning scraper 4 with the drive chain 3 is not affected. Figure 2 As shown, a support rod 7 is provided inside the accommodating cavity 5. The support rod 7 is located between the upper and lower sections of the drive chain 3, which will not adversely affect the movement of the drive chain 3 and the cleaning scraper 4, and can also ensure the structural strength of the frame 1. The rotating shafts connected to the chain wheels 2 on both sides can pass through the accommodating holes opened through the support plate 1-2.

[0023] Furthermore, in this embodiment, a filter hole is provided through the support plate 1-2. Since the slurry contains mostly large solid mud lumps and sand, the filter hole can filter out the water in the slurry, reducing the subsequent collection and treatment process of large mud lumps and sand. A sewage collection hopper 8 is provided below the frame 1 at the bottom of the support plate 1-2 for collecting the filtered sewage. The sewage collection hopper 8 and the support plate 1-2 are spaced apart by support rods 9 to provide space for the drive chain 3 and cleaning scraper 4 to move between the sewage collection hopper 8 and the support plate 1-2. Preferably, an overflow port 10 is provided on one side of the upper part of the sewage collection hopper 8, and an overflow valve is provided at the overflow port 10. The overflow port 10 can discharge the clarified water in the sewage collection hopper 8 for reuse. A filter screen is provided on the side of the overflow port 10 inside the sewage collection hopper 8 to reduce the amount of sewage discharged. The filter screen is preferably a convex arc-shaped structure to increase the filtration area and ensure overflow efficiency.

[0024] In addition, a screw conveyor 11 is installed at the bottom of the sewage collection hopper 8. The bottom inlet of the screw conveyor 11 is connected to the drain outlet at the bottom of the sewage collection hopper 8 to discharge the slurry that has settled at the bottom of the sewage collection hopper 8. A valve is installed at the drain outlet at the bottom of the sewage collection hopper 8 to open when slurry discharge is required. A guide plate 12 is installed inside the sewage collection hopper 8, located at the top of the sewage collection hopper 8. The guide plate 12 can guide the water filtered from the support plate 1-2, reducing disturbance to the water flow inside the sewage collection hopper 8 and ensuring clarification effect. Specifically, the guide plate 12 has an inverted V-shaped structure and is centrally located inside the sewage collection hopper 8. The two sides with slopes form a guide channel between the guide plate 12 and the inner wall of the sewage collection hopper 8, allowing the filtered water to enter the sewage collection hopper 8 along the guide slope.

[0025] In use, the motor is first turned on to drive the chain wheel 2 to rotate. The drive chain 3 will drive the cleaning scraper 4 to move along the surface of the support plate 1-2, pushing the mud conveyed to the support plate 1-2 out. During the mud discharge process, some of the water in the mud will be filtered out through the filter holes on the support plate 1-2 and enter the sewage collection hopper 8 below. Finally, the clarified water in the sewage collection hopper 8 will be discharged through the overflow hole, and the remaining slurry can be discharged through the screw conveyor 11.

Claims

1. A muck removal and conveying system for a tunnel boring machine, characterized in that: The device includes a frame, on which a set of sprockets is provided on both sides along its width direction. Each set of two sprockets is arranged along the length direction of the frame. The two sprockets in each set are connected by a drive chain, and two adjacent sets of sprockets are connected by a shaft. Multiple cleaning scrapers are spaced apart between the drive chains on both sides, and the bottom of the upper cleaning scraper contacts the support plate on the frame.

2. The shield machine muck conveying system according to claim 1, characterized in that: The frame has accommodating cavities on both sides, and the chain wheel and the drive chain are both located in the accommodating cavities; clearance grooves are provided on the opposite sides of the two accommodating cavities to allow the cleaning scraper to move.

3. The shield machine muck conveying system according to claim 1, characterized in that: The support plate has a through-hole filter hole; a sewage collection hopper is provided below the frame at the bottom of the support plate; the sewage collection hopper and the support plate are spaced apart by support rods.

4. The shield machine muck conveying system according to claim 3, characterized in that: An overflow port is provided on one side of the upper part of the sewage collection hopper, and an overflow valve is provided at the overflow port.

5. The shield machine muck conveying system according to claim 4, characterized in that: The overflow outlet is located on one side inside the sewage collection hopper and is equipped with a filter screen.

6. The shield machine muck conveying system according to claim 5, characterized in that: The filter screen has a convex arc-shaped structure.

7. The shield machine muck conveying system according to claim 3, characterized in that: The bottom of the sewage collection hopper is equipped with a screw conveyor, and the bottom inlet of the screw conveyor is connected to the sewage outlet at the bottom of the sewage collection hopper.

8. The shield machine muck conveying system according to claim 3, characterized in that: The sewage collection hopper is equipped with a guide plate, which is located at the top of the sewage collection hopper.

9. The shield machine muck conveying system according to claim 8, characterized in that: The guide plate has an inverted V-shaped structure and is centrally located inside the sewage collection hopper. The two sides with inclined surfaces form a guide channel between the guide plate and the inner wall of the sewage collection hopper.

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