Slag removing device in main beam of TBM (Tunnel Boring Machine)

Abstract

The utility model provides a slag removing device in a TBM main beam, and belongs to the technical field of shield tunneling machines. Comprising a displacement assembly, a driving assembly and a scraper assembly. The displacement assembly is connected with a main beam of the TBM and the driving assembly and used for driving the driving assembly to move relative to the main beam of the TBM. The scraper assembly is mounted on the driving assembly and comprises a scraper and a bearing part, the scraper is mounted at the driving end of the driving assembly, and the bearing part is arranged below the scraper and fixedly connected with the main structure. The displacement assembly is arranged to drive the scraper assembly to be connected with the cutter slag sliding hopper of the TBM, the bearing piece is arranged to bear rock ballast falling from the cutter slag sliding hopper of the TBM, and the driving assembly is arranged to drive the scraper to scrape the rock ballast on the bearing piece, so that slag removal is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel boring machine technology and relates to a slag removal device inside the main beam of a TBM. Background Technology

[0002] When a main beam TBM is used for engineering excavation, the generated excavated soil and gravel are typically transported away using a main conveyor belt to prevent material accumulation and ensure a smooth construction process. However, using conveyor belts for material transport has the following disadvantages: 1. The belts are prone to wear, and broken belts require fasteners for repair; 2. The belts are prone to misalignment and leakage, requiring the main beam to be cleaned of debris to prevent accumulated soil from affecting the conveyor belt's operation. Therefore, a new material transport structure is needed to solve these problems. Utility Model Content

[0003] This utility model provides a slag removal device for the main beam of a TBM, including a displacement assembly, a drive assembly, and a scraper assembly;

[0004] The displacement component connects the main beam of the TBM and the drive component, and is used to drive the drive component to move relative to the main beam of the TBM.

[0005] The scraper assembly is mounted on the drive assembly, and the scraper assembly includes a scraper and a carrier. The scraper is mounted on the drive end of the drive assembly, and the carrier is disposed below the scraper and fixedly connected to the main structure.

[0006] Optionally, the scraper is provided with multiple pieces arranged at intervals, and a gap is provided between each scraper piece and the carrier.

[0007] Optionally, an inclined surface may be provided on the end face of a single scraper used for scraping stone chips.

[0008] Optionally, the displacement assembly includes a connecting seat, a slide rail, and a pulley block. The slide rail is mounted on the main beam, and the pulley block is mounted on the connecting seat. The pulley block is slidably connected to the slide rail.

[0009] The fixed end of the drive component is fixedly connected to the connector.

[0010] Optionally, the displacement assembly has two sets arranged symmetrically to each other, and the two sets of displacement assemblies are respectively fixed to the two end faces of the driving assembly.

[0011] The slide rail is configured with a U-shaped opening structure, and the opening ends of the two sets of slide rails are arranged opposite each other.

[0012] Optionally, the drive assembly includes a drive wheel, a driven wheel, a chain, and a drive element;

[0013] The drive wheel consists of two parts arranged side by side, both of which are rotatably connected to the main structure;

[0014] The driven wheel has two parts arranged side by side, and both driven wheels are rotatably connected to the main structure;

[0015] The chain has two parts arranged side by side, and each part of the chain is meshed with a single drive wheel and a single driven wheel;

[0016] The drive unit has two parts that are respectively fixedly connected to the two drive wheels.

[0017] Optionally, the two ends of the scraper are connected to two chains respectively, and the lower end face of the scraper extends to the bottom of the chain.

[0018] Optionally, a tensioning assembly for adjusting the tension of the chain may also be included.

[0019] Optionally, the tensioning assembly includes a connecting rod, a spring, a pin plate, and a welded beam;

[0020] A spring is fitted on the connecting rod, and one end of the connecting rod is connected to the receiving steel plate, while the other end of the connecting rod passes through the pin plate and is equipped with a locking device.

[0021] The pin plate is connected to the driven wheel or the driving wheel;

[0022] The welded beam is connected to the load-bearing component.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention achieves slag removal by setting a displacement component to drive the scraper component to connect with the cutterhead chute of the TBM, setting a bearing component to receive the stone slag falling from the cutterhead chute of the TBM, and setting a drive component to drive the scraper to scrape off the stone slag placed on the bearing component.

[0025] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of a TBM main beam internal cleaning device in an embodiment of this utility model;

[0028] Figure 2 yes Figure 1 Diagram of direction A in the middle.

[0029] in:

[0030] 01. Main beam, 1. Driven wheel, 2. Displacement assembly, 2.1. Connecting seat, 2.2. Slide rail, 2.3. Pulley block, 3. Chain, 4. Bearing component, 5. Drive wheel, 6. Tensioning assembly, 7. Scraper. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this utility model clearer and easier to understand, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings of this utility model are all in a simplified form and use non-precise proportions, and are only used to facilitate and clearly assist in illustrating the implementation of this utility model; the "several" mentioned in this utility model are not limited to the specific number shown in the examples in the drawings; the directions or positional relationships indicated by "front," "middle," "rear," "left," "right," "up," "down," "top," "bottom," and "middle" mentioned in this utility model are all based on the directions or positional relationships shown in the accompanying drawings of this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, nor should they be construed as limitations on this utility model.

[0032] Example:

[0033] See Figure 1 and Figure 2 As shown, the present invention provides a TBM main beam internal cleaning device, which is installed on the main beam 01; and includes a displacement component 2, a drive component and a scraper component.

[0034] The displacement component 2 connects the main beam 01 of the TBM to the drive component, and is used to drive the drive component to move relative to the main beam 01 of the TBM.

[0035] The scraper assembly is mounted on the drive assembly, and the scraper assembly includes a scraper 7 and a receiving member 4. The scraper 7 is mounted on the drive end of the drive assembly, and the receiving member 4 is disposed below the scraper 7 and fixedly connected to the main structure.

[0036] When it is necessary to clean the stone debris in the cutterhead chute, the drive assembly and scraper assembly are displaced within the TBM main beam by the displacement assembly 2 and displaced to connect with the cutterhead chute so that the stone debris in the cutterhead chute can fall onto the receiving part 4; at this time, the drive assembly is started to drive the scraper 7 to rotate clockwise so that the scraper 7 can scrape off the stone debris placed on the receiving part 4.

[0037] When maintenance of the TBM cutterhead is required, the drive assembly and scraper assembly are displaced within the TBM main beam away from the cutterhead chute by the displacement assembly 2, so as to make space easier for operators to maintain the cutterhead.

[0038] Preferably, to prevent material from falling onto the bottom surface of the main beam, the receiving component 4 includes two parts, one located below the upper chain and the other below the lower chain. That is, it includes a bearing steel plate located on the same horizontal plane as the drive wheel and another bearing steel plate located below the drive wheel. More preferably, the receiving component 4 is preferably a steel plate structural component.

[0039] Preferably, the scraper 7 comprises multiple pieces spaced apart from each other, with a gap between each scraper 7 and the receiving member 4. More preferably, the gap between the scraper 7 and the receiving member 4 is set to 1-5mm to reduce the resistance generated by the friction between the scraper 7 and the receiving member 4. Even more preferably, the gap between the scraper 7 and the receiving member 4 is set to 2mm to effectively ensure the clean removal of stone chips.

[0040] Preferably, the end face of each scraper 7 used for scraping stone chips is also provided with an inclined surface to reduce the resistance generated when the scraper 7 is in direct contact with the stone chips. More preferably, the inclined surface is preferably set with a chamfer of 5-10mm, so as to reduce the resistance of the scraper 7 when scraping stone chips and prevent stone chips from getting stuck in the inclined surface, thereby increasing the resistance between the scraper 7 and the receiving member 4.

[0041] Furthermore, the displacement assembly 2 includes a connecting seat 2.1, a slide rail 2.2, and a pulley block 2.3. The slide rail 2.2 is mounted on the main beam 01, and the pulley block 2.3 is mounted on the connecting seat 2.1. The pulley block 2.3 is slidably connected to the slide rail 2.2.

[0042] The fixed end of the drive component is fixedly connected to the connector 2.1.

[0043] Preferably, the displacement component 2 is provided in two sets arranged symmetrically to each other, and the two sets of displacement components 2 are respectively fixedly connected to the two end faces of the driving component;

[0044] The slide rail 2.2 is configured with a U-shaped opening structure, and the opening ends of the two sets of slide rails 2.2 are arranged opposite to each other.

[0045] Furthermore, the drive assembly includes a drive wheel 5, a driven wheel 1, a chain 3, and a drive component;

[0046] The drive wheel 5 has two parts arranged side by side, and both drive wheels 5 are rotatably connected to the main structure;

[0047] The driven wheel 1 has two parts arranged side by side, and both driven wheels 1 are rotatably connected to the main structure;

[0048] The chain 3 has two pieces arranged side by side, and each piece of chain 3 is meshed with a single drive wheel 5 and a single driven wheel 1.

[0049] The drive unit has two parts that are respectively fixedly connected to the two drive wheels 5.

[0050] Preferably, the two ends of the single scraper 7 are respectively connected to the two chains 3, and the lower end face of the scraper 7 extends to the bottom of the chain 3.

[0051] Preferably, the driving component is a hydraulic motor.

[0052] As a further embodiment of the present invention, the slag removal device further includes a tensioning component 6 for adjusting the tension of the chain 3.

[0053] Preferably, the tensioning assembly 6 includes a connecting rod, a spring, a pin plate, and a welded beam; the connecting rod is fitted with a spring, and one end of the connecting rod is connected to a receiving steel plate, while the other end of the connecting rod passes through the pin plate and is equipped with a locking element; the pin plate is connected to the driven wheel 1 or the driving wheel 5; the welded beam is connected to the receiving component 4. The tension of the chain is adjusted by adjusting the compression of the spring. More preferably, the connecting rod has an external thread on its outer surface, and the locking element is preferably set as at least one nut that is helically connected to the external thread. The compression of the spring is adjusted by adjusting the relative position of the nut on the connecting rod. Even more preferably, to prevent slippage between the nut and the external thread during the connection process between the screw and the connecting rod and during use, which would lead to the failure of the chain tension adjustment, the nut preferably includes a first nut and a second nut. The internal thread of the first nut is set as a forward or reverse thread structure that matches the external thread, and the internal thread of the second nut is set as a thread structure opposite to the internal thread of the first nut. That is, when the first nut is set to a forward thread, the second nut is set to a reverse thread, so as to prevent stripping through the mutual cooperation of the first nut and the second nut.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A slag removal device for the main beam of a TBM, characterized in that, Includes a displacement assembly (2), a drive assembly, and a scraper assembly; The displacement component (2) connects the main beam of the TBM and the drive component, and is used to drive the drive component to move relative to the main beam of the TBM. The scraper assembly is mounted on the drive assembly, and the scraper assembly includes a scraper (7) and a carrier (4). The scraper (7) is mounted on the drive end of the drive assembly, and the carrier (4) is disposed below the scraper (7) and fixedly connected to the main structure.

2. The TBM main beam internal slag removal device according to claim 1, characterized in that, The scraper (7) is provided with multiple pieces arranged at intervals, and there is a gap between each scraper (7) and the carrier (4).

3. The TBM main beam internal slag removal device according to claim 2, characterized in that, An inclined surface is also provided on the end face of the individual scraper (7) used for scraping stone chips.

4. The TBM main beam internal slag removal device according to any one of claims 1-3, characterized in that, The displacement component (2) includes a connecting seat (2.1), a slide rail (2.2), and a pulley block (2.3). The slide rail (2.2) is mounted on the main beam, and the pulley block (2.3) is mounted on the connecting seat (2.1). The pulley block (2.3) is slidably connected to the slide rail (2.2). The fixed end of the drive component is fixedly connected to the connector (2.1).

5. The TBM main beam internal slag removal device according to claim 4, characterized in that, The displacement component (2) is provided with two sets arranged symmetrically to each other, and the two sets of displacement components (2) are respectively fixed to the two end faces of the drive component; The slide rail (2.2) is configured with a U-shaped opening structure, and the opening ends of the two sets of slide rails (2.2) are arranged opposite to each other.

6. The TBM main beam internal slag removal device according to claim 5, characterized in that, The drive assembly includes a drive wheel (5), a driven wheel (1), a chain (3), and a drive component; The drive wheel (5) has two parts arranged side by side, and both drive wheels (5) are rotatably connected to the main structure; The driven wheel (1) has two pieces arranged side by side, and both driven wheels (1) are rotatably connected to the main structure; The chain (3) has two pieces arranged side by side, and each piece of chain (3) is meshed with a single driving wheel (5) and a single driven wheel (1). The drive unit has two parts that are respectively fixedly connected to two drive wheels (5).

7. The TBM main beam internal slag removal device according to claim 5 or 6, characterized in that, The two ends of the single scraper (7) are respectively connected to the two chains (3), and the lower end face of the scraper (7) extends to the bottom of the chain (3).

8. The TBM main beam internal slag removal device according to claim 7, characterized in that, It also includes a tensioning assembly (6) for adjusting the tension of the chain (3).

9. The TBM main beam internal slag removal device according to claim 8, characterized in that, The tensioning assembly (6) includes a connecting rod, a spring, a pin plate, and a welded beam; A spring is fitted on the connecting rod, and one end of the connecting rod is connected to the receiving steel plate, while the other end of the connecting rod passes through the pin plate and is equipped with a locking device. The pin plate is connected to the driven wheel (1) or the driving wheel (5); The welded beam is connected to the load-bearing component (4).

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