Device for assisting TBM (Tunnel Boring Machine) slag scraping hopper in carrying slag and discharging slag

Abstract

The utility model discloses a device for assisting a TBM (Tunnel Boring Machine) slag scraping hopper in carrying slag and discharging slag, which comprises a main belt conveyor (1) and a cutterhead (2), a slag receiving hopper (3) is arranged at one end of the main belt conveyor (1), slag slipping devices are arranged on the back of the cutterhead (2) in pairs, a slag discharging groove (4) is arranged on the outer edge of the cutterhead (2), and the slag discharging groove (4) is matched with the upper ends of the slag slipping devices. The slag receiving hopper (3) is located on the back face of the cutter head (2) and matched with the lower end of the slag sliding device, and a slag carrying and discharging mechanism is obliquely arranged on the end face of one end of the lower end of the slag sliding device. The device has the advantages of simple structure, reliability in use, convenience in installation and low cost, and can effectively make up the gap between the slag sliding plate and the slag receiving hopper of the cutter head, so that the slag carrying angle of the slag sliding plate is greatly increased, rock ballast, muddy water and the like are prevented from flowing out of the gap between the slag sliding plate and the slag receiving hopper when the cutter head rotates, and sludge is prevented from flowing repeatedly in the cutter head. And the slag-carrying and slag-discharging capabilities of the cutter head are effectively improved.

Description

Technical Field

[0001] The utility model relates to a TBM construction auxiliary device, in particular to a slag carrying and slag discharging device for an auxiliary TBM slag scraper. Background Art

[0002] At present, in the construction of open TBM crossing fault fracture zones, alteration zones, weak surrounding rocks and abundant groundwater and other unfavorable geological conditions, in order to reduce the disturbance of the cutter head rotation to the broken surrounding rocks, the cutter head rotates at a low speed, resulting in insufficient centrifugal force of stone slag, mud, sand, water, etc.; at the same time, the stone slag produced by TBM excavation is mostly in the form of mud and sand, with strong fluidity. During the TBM excavation process, the stone slag enters the slag plate and flows into the cutter head from the gap between the slag plate and the slag bucket, causing the cutter head tool to be wrapped in mud and sand, increasing the TBM torque, and causing the TBM cutter head to get stuck. Manual slag removal is used. However, due to the limitations of the TBM mechanical structure and layout, and the problem of small space inside the cutter head, the efficiency of manual slag removal is extremely low, which has a great impact on TBM construction and seriously affects the total construction period.

[0003] At the same time, manual slag cleaning is used with extremely low efficiency, which has a great impact on TBM construction and seriously affects the total construction period. Therefore, in order to improve the slag carrying and slag discharge capacity of the cutterhead when excavating in poor geological sections of open TBMs and avoid the risks of manual slag cleaning and cutterhead jamming in the cutterhead, it is necessary to propose an auxiliary open TBM scraper bucket slag carrying and slag discharge device. Utility Model Content

[0004] The utility model aims to provide a slag carrying and discharging device for an auxiliary TBM slag scraper bucket with high slag carrying and discharging efficiency.

[0005] The purpose of the utility model is achieved through such a technical solution, a slag carrying and discharging device for auxiliary TBM scraping bucket, including a main belt conveyor and a cutter disc, a slag receiving bucket is arranged at one end of the main belt conveyor, slag sliding devices are arranged in pairs on the back of the cutter disc, a slag discharge trough is arranged on the outer edge of the cutter disc, the slag discharge trough is matched with the upper end of the slag sliding device, the slag receiving bucket is located on the back of the cutter disc and matched with the lower end of the slag sliding device, and a slag carrying and discharging mechanism is inclinedly arranged on one end face of the lower end of the slag sliding device.

[0006] Among them, the slag chute device arranged in pairs includes a slag chute plate A and a slag chute plate B, and the slag chute plate A and the slag chute plate B are in the shape of a trumpet with a larger upper part and a smaller lower part, and the large open end of the trumpet shape corresponds to the slag discharge trough; the slag carrying and discharging mechanism is arranged on the lower end face of the opposite surface of the slag chute plate A or the slag chute plate B.

[0007] Further description, the slag carrying and discharging mechanism includes a flexible rubber protective skin arranged on the slag chute plate A or the slag chute plate, and vertical supports A and vertical supports B are symmetrically and vertically arranged on the flexible rubber protective skin, and the vertical supports A and B are connected by transverse supports; the vertical supports A and B are connected to the slag chute plate A or the slag chute plate B.

[0008] For the convenience of connection, the vertical support A and the vertical support B are respectively connected to the pad A and the pad B arranged on the flexible rubber sheath by bolts.

[0009] Due to the adoption of the above-mentioned technical scheme, the utility model has the advantages of simple structure, reliable use, easy installation and low cost. It can effectively make up for the gap between the slag chute plate of the cutter disc and the slag receiving bucket, thereby greatly increasing the slag carrying angle of the slag chute plate, ensuring that stone slag and muddy water do not flow out from the gap between the two when the cutter disc rotates, avoiding the repeated flow of mud in the cutter disc, and effectively improving the slag carrying and slag discharge capacity of the cutter disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings of the present utility model are as follows:

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 Magnified view of part A in the middle. DETAILED DESCRIPTION

[0013] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these implementation modes, and any improvement or substitution based on the basic spirit of the present embodiment still falls within the scope of protection required by the claims of the present invention.

[0014] Example 1: Figure 1 , 2 As shown, an auxiliary TBM scraper bucket slag carrying and discharging device comprises a main belt conveyor 1 and a cutter disc 2. A slag receiving bucket 3 is arranged at one end of the main belt conveyor 1, and slag sliding devices are arranged in pairs on the back of the cutter disc 2. A slag discharge trough 4 is arranged on the outer edge of the cutter disc 2, and the slag discharge trough 4 cooperates with the upper end of the slag sliding device. The slag receiving bucket 3 is located on the back of the cutter disc 2 and cooperates with the lower end of the slag sliding device. A slag carrying and discharging mechanism is inclinedly arranged on one end face of the lower end of the slag sliding device.

[0015] Among them, the slag chute device arranged in pairs includes a slag chute plate A5 and a slag chute plate B6, and the slag chute plate A5 and the slag chute plate B6 are in a trumpet shape with a larger upper part and a smaller lower part, and the large open end of the trumpet shape corresponds to the slag discharge trough 4; the slag carrying and discharging mechanism is arranged on the lower end face of the opposite surface of the slag chute plate A5 or the slag chute plate B6.

[0016] Further description, the slag carrying and discharging mechanism includes a flexible rubber protective skin 7 arranged on the slag chute plate A5 or the slag chute plate B6, and vertical supports A8 and B9 are symmetrically and vertically arranged on the flexible rubber protective skin 7, and the vertical supports A8 and B9 are connected by a transverse support 10; the vertical supports A8 and B9 are connected to the slag chute plate A5 or the slag chute plate B6. The vertical supports A8 and B9 are fixed to the slag chute plate A5 or the slag chute plate B6 by welding, and the welding angle is determined according to the positional relationship between the slag chute plate and the slag receiving bucket. During the rotation of the cutter head 2, the slag chute plate starts to slag within the slag receiving range of the slag receiving bucket 3, and a larger angle is selected as much as possible according to the opening angle of the slag receiving bucket 3 to ensure that the slag unloading area is above the slag receiving bucket 3.

[0017] In order to facilitate the connection and ensure the stability of the connection, the vertical support A8 and the vertical support B9 are connected to the pad A11 and the pad B12 respectively arranged on the flexible rubber sheath 7 by bolts. The pad A11 and the pad B12 are both square steel pads, and their contour area is more than twice the area of ​​the bolt head, which increases the contact area with the flexible rubber sheath to prevent falling during excavation.

[0018] During TBM excavation, after the slag enters the slag chute of the cutter disc through the slag chute 4, it slides to the top of the device and is blocked by the device so that the cutter disc slag unloading area is located above the slag receiving bucket 3. At the same time, the gap between the slag chute and the slag receiving bucket 3 is reduced, thereby ensuring that the slag and muddy water do not flow out of the gap when the cutter disc 2 rotates, thereby improving the slag carrying and slag discharge capacity of the cutter disc 2; after the slag is sent to the slag receiving bucket 3, it is transported to the outside of the tunnel via the main belt conveyor 1.

Claims

1. A slag carrying and discharging device for a scraping bucket of an auxiliary TBM, comprising a main belt conveyor (1) and a cutter disc (2), a slag receiving bucket (3) being arranged at one end of the main belt conveyor (1), slag sliding devices being arranged in pairs at the back of the cutter disc (2), a slag discharging trough (4) being arranged at the outer edge of the cutter disc (2), the slag discharging trough (4) being matched with the upper end of the slag sliding device, the slag receiving bucket (3) being located at the back of the cutter disc (2) and being matched with the lower end of the slag sliding device, and characterized in that: A slag carrying and discharging mechanism is obliquely arranged on one end surface of the lower end of the slag sliding device.

2. The auxiliary TBM scraper bucket slag carrying and slag discharging device according to claim 1 is characterized in that: The slag discharge device arranged in pairs comprises a slag discharge plate A (5) and a slag discharge plate B (6), wherein the slag discharge plate A (5) and the slag discharge plate B (6) are in a trumpet shape with a larger upper portion and a smaller lower portion, and the larger opening end of the trumpet shape corresponds to the slag discharge trough (4); the slag carrying and discharge mechanism is arranged on the lower end surface of the opposite surface of the slag discharge plate A (5) or the slag discharge plate B (6).

3. The auxiliary TBM scraper bucket slag carrying and slag discharging device as claimed in claim 2 is characterized by: The slag carrying and discharging mechanism comprises a flexible rubber protective skin (7) arranged on a slag chute plate A (5) or a slag chute plate B (6), and vertical supports A (8) and vertical supports B (9) are symmetrically and vertically arranged on the flexible rubber protective skin (7), and the vertical supports A (8) and vertical supports B (9) are connected by a transverse support (10); the vertical supports A (8) and vertical supports B (9) are connected to the slag chute plate A (5) or the slag chute plate B (6).

4. The auxiliary TBM scraper bucket slag carrying and slag discharging device according to claim 3 is characterized in that: The vertical support A (8) and the vertical support B (9) are respectively connected to a cushion block A (11) and a cushion block B (12) arranged on the flexible rubber sheath (7) by means of bolts.

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