Slag blocking device for inclined shaft TBM shield

Abstract

The utility model relates to tunnel construction technical field, concretely relates to a kind of inclined shaft TBM shield body slag stopping device, including slag stopping mechanism, scrape slag mechanism, slide slag subassembly and sealing assembly;The sealing assembly is used to install the block connection at shield inside, the slag stopping mechanism includes first fixed assembly and scraper, the scraper is detachably mounted to the outer ring of shield by the first fixed assembly, and the scraper is towards cutterhead side;The scrape slag mechanism includes second fixed assembly and steel plate bundle, and the steel plate bundle is detachably mounted to the outer ring block connection at shield by the second fixed assembly, and the steel plate bundle extends out the slag stopping mechanism towards cutterhead side;The slide slag subassembly is used to install at the bottom of shield, and the slide slag subassembly corresponds to the slag stopping mechanism and the scrape slag mechanism.The utility model solves the technical problem that the slag stopping efficiency of current shield slag stopping device is not high and structure is complex.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a slag-blocking device for a TBM shield in an inclined shaft. Background Technology

[0002] During construction, existing inclined shaft TBMs (Tunnel Boring Machines) often experience the phenomenon of excavated soil sliding down the inclined shaft slope and falling into the shield body, easily accumulating continuously in the lower area of ​​the TBM. This soil accumulation not only occupies structural space but may also intrude into critical areas of the equipment, causing wear and even damage to TBM components, especially posing a serious threat to core components such as the main drive. However, currently used shield muck-blocking devices generally suffer from problems such as complex structure, bulky size, inconvenient installation and disassembly, and high manufacturing costs. Furthermore, their overall protective performance is still insufficient, offering limited protection to the main unit, and their complex structural design hinders maintenance and adjustment. In addition, there is a lack of specific research on muck protection for inclined shaft TBMs. Existing muck collection systems are mostly designed for horizontal tunnel conditions, lacking adaptability to inclined shaft excavation, and generally exhibiting low collection efficiency, particularly in the shield area where they are almost ineffective in blocking and preventing muck buildup. Utility Model Content

[0003] The main purpose of this utility model is to provide a slag-blocking device for inclined shaft TBM shields, which aims to solve the technical problems of low slag-blocking efficiency and complex structure of existing shield slag-blocking devices.

[0004] To achieve the above objectives, this utility model proposes a slag-blocking device for a TBM shield in an inclined shaft, comprising a slag-blocking mechanism, a slag-scraping mechanism, a slag-chuting assembly, and a sealing assembly. The sealing assembly is installed at the segmented connection points inside the shield. The slag-blocking mechanism includes a first fixing component and a scraper, which is detachably mounted on the outer ring of the shield via the first fixing component, and the scraper faces the cutterhead side. The slag-scraping mechanism includes a second fixing component and a steel plate bundle, which is detachably mounted on the outer ring segmented connection points of the shield via the second fixing component, and the steel plate bundle extends out of the slag-blocking mechanism towards the cutterhead side. The slag-chuting assembly is installed at the bottom of the shield and is positioned corresponding to the slag-blocking mechanism and the slag-scraping mechanism.

[0005] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the first fixing component includes a fixing plate and a first pressure plate. The fixing plate is used to fix to the outer ring of the shield, the first pressure plate is detachably installed on the fixing plate, and the scraper is installed between the first pressure plate and the fixing plate.

[0006] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the first fixing component also includes an adjusting screw, which is installed between the first pressure plate and the fixing plate, and the adjusting screw is connected to the scraper.

[0007] The improvement of the TBM shield slag blocking device of this utility model is that the adjusting screw is equipped with a disc spring for fastening the scraper.

[0008] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the number of the adjusting screws is multiple, and the multiple adjusting screws are connected to the scraper at intervals.

[0009] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the first pressure plate is detachably installed on the fixed plate by the first bolt.

[0010] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the number of slag blocking mechanisms is multiple, and the multiple slag blocking mechanisms are installed close to each other.

[0011] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the second fixing component includes a base plate and a second pressure plate. The base plate is used to fix to the outer ring block connection of the shield. The second pressure plate is detachably installed on the base plate. The steel plate bundle is installed between the second pressure plate and the base plate.

[0012] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the second pressure plate is detachably installed on the base plate by the second bolt.

[0013] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the number of slag scraping mechanisms is multiple, and the multiple slag scraping mechanisms are respectively fixed to the connection points of the outer ring blocks of the shield.

[0014] The present invention further improves the slag-blocking device of the inclined shaft TBM shield body by including a slag-collecting hopper and a slag-discharging pipe. The slag-collecting hopper is used to be installed at the bottom of the shield, and the slag-discharging device corresponds to the slag-blocking mechanism and the slag-scraping mechanism. The slag-discharging pipe is connected to the rear end of the slag-collecting hopper to the outside of the shield.

[0015] The improvement of the inclined shaft TBM shield slag blocking device of this utility model is that the sealing assembly includes multiple sealing strips, which are respectively installed at the joints of the various sections inside the shield.

[0016] The technical solution of this utility model has the following beneficial effects: This utility model discloses a slag-blocking device for inclined shaft TBM shields. By employing sealing components at the joints of shield segments and structural gaps, it further ensures slag-blocking performance. The slag-blocking and scraping mechanisms intercept slag, and a slag-receiving and chute assembly is installed at the bottom of the shield, allowing slag to fall onto the chute assembly and be transported out of the shield, preventing slag accumulation at the bottom of the shield. This solves the technical problems of low slag-blocking efficiency and complex structure in existing shield slag-blocking devices. This utility model uses bolted installation to mount the scraper and steel plate bundles, improving the efficiency of structural replacement; any damaged or needing-replaced components can be easily replaced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a perspective view of the installation state of the TBM shield slag-blocking device for inclined shafts according to this utility model; Figure 2 This is a side view of the installation state of the TBM shield slag-blocking device for inclined shafts according to this utility model; Figure 3 This is a front view of the installation state of the TBM shield slag blocking device of this utility model (only part of the slag blocking mechanism and slag scraping mechanism are shown). Figure 4 This is a front view of the slag-blocking mechanism of the slag-blocking device for the inclined shaft TBM shield of this utility model; Figure 5 for Figure 4 Sectional view of line AA in the middle; Figure 6 for Figure 4 Sectional view of the middle BB line; Figure 7 This is a longitudinal sectional view of the slag-blocking mechanism of the slag-blocking device for the inclined shaft TBM shield of this utility model; Figure 8 This is a side view of the slag scraping mechanism of the TBM shield slag blocking device for inclined shafts of this utility model.

[0019] Explanation of icon numbers: 1. Cutterhead; 2. Shield; 3. Main drive; 4. Slag blocking mechanism; 401. Fixing plate; 402. Scraper; 403. First pressure plate; 404. Disc spring; 405. Adjusting screw; 5. Slag scraping mechanism; 501. Base plate; 502. Steel plate bundle; 503. Second pressure plate; 6. Sealing strip; 7. Slag chute assembly; 701. Slag collection hopper; 702. Slag chute pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] like Figures 1-8As shown, this utility model proposes a slag-blocking device for a TBM shield in an inclined shaft, including a slag-blocking mechanism 4, a slag-scraping mechanism 5, a slag-chuting assembly 7, and a sealing assembly. The sealing assembly is used to be installed at the segmented connection inside the shield 2. The slag-blocking mechanism 4 includes a first fixing component and a scraper 402. The scraper 402 is detachably installed on the outer ring of the shield 2 via the first fixing component, and the scraper 402 faces the cutterhead 1. The slag-scraping mechanism 5 includes a second fixing component and a steel plate bundle 502. The steel plate bundle 502 is detachably installed on the outer ring segmented connection of the shield 2 via the second fixing component, and the steel plate bundle 502 extends out of the slag-blocking mechanism 4 towards the cutterhead 1. The slag-chuting assembly 7 is used to be installed at the bottom of the shield 2, and the slag-chuting assembly 7 is arranged corresponding to the slag-blocking mechanism 4 and the slag-scraping mechanism 5.

[0026] Specifically, the TBM's cutterhead 1 is located at the front and is used to crush and break the rock mass; the shield 2 is located behind the cutterhead 1, outside the main drive 3, and braces the tunnel wall to stabilize the main unit and protect important components such as the main drive 3 inside; the main drive 3 is located behind the cutterhead 1, inside the shield 2, and is used to drive the cutterhead 1 to rotate.

[0027] Preferably, such as Figures 3-6 As shown, the first fixing component includes a fixing plate 401 and a first pressure plate 403. The fixing plate 401 is used to fix to the outer ring of the shield 2, and the first pressure plate 403 is detachably installed on the fixing plate 401. The scraper 402 is installed between the first pressure plate 403 and the fixing plate 401. In this embodiment, the fixing plate 401 is fixed to the shield 2 by welding to ensure the stability of the entire muck-blocking mechanism 4, and is used to install the scraper 402. During TBM tunneling, the scraper 402 is used to scrape away loose muck in the tunnel to prevent muck from falling into the interior of the shield 2.

[0028] Preferably, the first fixing assembly further includes an adjusting screw 405, which is installed between the first pressure plate 403 and the fixing plate 401, and is connected to the scraper 402. The adjusting screw 405 is threadedly connected to the fixing plate 401 and the scraper 402. The scraper 402 faces the cutter head 1 along the axial direction of the shield 2, and the adjusting screw 405 is used to limit the front-to-back position of the scraper 402 along the axial direction of the shield 2, so as to prevent the scraper 402 from being completely retracted into the gap between the first pressure plate 403 and the fixing plate 401, and to prevent the scraper 402 from coming out of the gap between the first pressure plate 403 and the fixing plate 401.

[0029] Preferably, such as Figure 6 and Figure 7As shown, the adjusting screw 405 is provided with a disc spring 404 for fastening the scraper 402. The disc spring 404 is located inside the slag-blocking mechanism 4. The disc spring 404 applies elastic force to the scraper 402, and works with the adjusting screw 405 to fasten the scraper 402. The elastic force of the disc spring 404 can be adjusted by adjusting the engagement depth of the screw 405.

[0030] Preferably, there are multiple adjusting screws 405, which are connected to the scraper 402 at intervals to evenly adjust the installation position of the scraper 402.

[0031] Preferably, the first pressure plate 403 is detachably mounted on the fixed plate 401 by first bolts. There are multiple first bolts, which are installed at intervals. The scraper 402 has openings through which the first bolts pass, and the first bolts pass through the openings to install the first pressure plate 403, thereby restricting the position of the scraper 402 in the circumferential direction.

[0032] Preferably, there are multiple slag-blocking mechanisms 4, which are installed close together. The entire slag-blocking mechanism 4 surrounds the entire outer ring of the shield 2, except for the slag-chuting component 7, thereby achieving an all-around slag-blocking effect.

[0033] Preferably, such as Figure 8 As shown, the second fixing component includes a base plate 501 and a second pressure plate 503. The base plate 501 is used to fix to the outer ring segment connection of the shield 2. The second pressure plate 503 is detachably mounted on the base plate 501. The steel plate bundle 502 is installed between the second pressure plate 503 and the base plate 501. The structure of the second fixing component is similar to that of the first fixing component.

[0034] Preferably, the second pressure plate 503 is detachably mounted on the base plate 501 by means of a second bolt.

[0035] Preferably, there are multiple scraping mechanisms 5, and each of the multiple scraping mechanisms 5 is fixed to the connection points of the outer ring blocks of the shield 2 to prevent slag from falling into the connection points of the outer ring blocks.

[0036] Preferably, the slag chute assembly 7 includes a slag collection hopper 701 and a slag chute pipe 702. The slag collection hopper 701 is installed at the bottom of the shield 2, and the slag chute assembly 7 corresponds to the slag blocking mechanism 4 and the slag scraping mechanism 5. The slag chute pipe 702 is connected to the rear end of the slag collection hopper 701 to the outside of the shield 2. Since this utility model is designed for structures used in inclined shaft excavation, especially uphill excavation, during uphill excavation, after the slag falls into the slag collection hopper 701, it flows directly out of the tunnel through the slag chute pipe 702 by gravity. Furthermore, the mixing of slag with soil makes it easier for the slag to flow out.

[0037] Preferably, the sealing assembly includes multiple sealing strips 6, which are respectively installed at the joints of the various sections inside the shield 2 to prevent soil from entering and to protect the internal components.

[0038] In inclined shaft excavation, especially uphill excavation, when a steep inclined shaft TBM begins operation, the rock and soil are crushed by the cutterhead 1 and turned into slag, which is then transported to the outside of the tunnel by a belt conveyor. However, a considerable portion of the slag accumulates in the lower half of the shield 2 under gravity and enters the main drive 3 through the gaps at the connection points of the shield 2, damaging the drive components. To address this issue, before excavation begins, this invention welds slag-blocking mechanisms 4 to the outer rings of the front and rear sides of the shield 2 and slag-scraping mechanisms 5 to the connection points. The slag-blocking mechanisms 4 and slag-scraping mechanisms 5 are pre-assembled, and sealing components are used to seal the connection points of the shield 2. If slag slips into the gap between the shield 2 and the tunnel wall, it will be blocked by the slag-blocking mechanism 4 and fall into the slag chute 7 to be transported to the outside of the tunnel. The slag-blocking mechanism 4 and slag-scraping mechanism 5 are fixed to the shield 2 shell by segmented welding, allowing for easy replacement in case of damage or component replacement. The slag chute component 7 is located directly below the shield 2, maximizing the absorption and transport of slag as it falls in.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A slag-blocking device for a TBM shield in an inclined shaft, characterized in that, The shield includes a slag-blocking mechanism (4), a slag-scraping mechanism (5), a slag-chuting assembly (7), and a sealing assembly. The sealing assembly is installed at the segmented connection inside the shield (2). The slag-blocking mechanism (4) includes a first fixing component and a scraper (402). The scraper (402) is detachably installed on the outer ring of the shield (2) via the first fixing component, and the scraper (402) faces the cutter head (1). The slag-scraping mechanism (5) includes a second fixing component and a steel plate bundle (502). The steel plate bundle (502) is detachably installed on the outer ring segmented connection of the shield (2) via the second fixing component, and the steel plate bundle (502) extends out of the slag-blocking mechanism (4) towards the cutter head (1). The slag-chuting assembly (7) is installed at the bottom of the shield (2), and the slag-chuting assembly (7) is provided corresponding to the slag-blocking mechanism (4) and the slag-scraping mechanism (5).

2. The slag-blocking device for inclined shaft TBM shields according to claim 1, characterized in that, The first fixing component includes a fixing plate (401) and a first pressure plate (403). The fixing plate (401) is used to fix to the outer ring of the shield (2). The first pressure plate (403) is detachably installed on the fixing plate (401). The scraper (402) is installed between the first pressure plate (403) and the fixing plate (401).

3. The slag-blocking device for inclined shaft TBM shields according to claim 2, characterized in that, The first fixing component further includes an adjusting screw (405), which is installed between the first pressure plate (403) and the fixing plate (401) and is connected to the scraper (402).

4. The slag-blocking device for inclined shaft TBM shields according to claim 3, characterized in that, The adjusting screw (405) is provided with a disc spring (404) for fastening the scraper (402).

5. The slag-blocking device for inclined shaft TBM shields according to claim 3, characterized in that, There are multiple adjusting screws (405), and the multiple adjusting screws (405) are connected to the scraper (402) at intervals.

6. The slag-blocking device for inclined shaft TBM shields according to claim 3, characterized in that, The first pressure plate (403) is detachably mounted on the fixed plate (401) by the first bolt.

7. The slag-blocking device for inclined shaft TBM shields according to claim 1, characterized in that, The number of the slag-blocking mechanisms (4) is multiple, and the multiple slag-blocking mechanisms (4) are installed close to each other.

8. The slag-blocking device for inclined shaft TBM shields according to claim 1, characterized in that, The second fixing component includes a base plate (501) and a second pressure plate (503). The base plate (501) is used to fix to the outer ring block connection of the shield (2). The second pressure plate (503) is detachably installed on the base plate (501). The steel plate bundle (502) is installed between the second pressure plate (503) and the base plate (501).

9. The slag-blocking device for inclined shaft TBM shield body according to claim 8, characterized in that, The second pressure plate (503) is detachably mounted on the base plate (501) by means of the second bolt.

10. The slag-blocking device for inclined shaft TBM shields according to claim 1, characterized in that, The number of the slag scraping mechanism (5) is multiple, and the multiple slag scraping mechanisms (5) are respectively fixed to the connecting points of the outer ring blocks of the shield (2).

11. The slag-blocking device for inclined shaft TBM shields according to claim 1, characterized in that, The slag chute assembly (7) includes a slag collection hopper (701) and a slag chute pipe (702). The slag collection hopper (701) is used to be installed at the bottom of the shield (2), and the slag chute assembly (7) corresponds to the slag blocking mechanism (4) and the slag scraping mechanism (5). The slag chute pipe (702) is connected to the rear end of the slag collection hopper (701) to the outside of the shield (2).

12. The slag-blocking device for inclined shaft TBM shields according to claim 1, characterized in that, The sealing assembly includes multiple sealing strips (6), which are respectively installed at the joints of the various blocks inside the shield (2).

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