A lateral slagging device for small-space earth pressure shield starting

Abstract

The application relates to a small-space earth pressure shield launching lateral slag discharging device, which comprises a conveying belt and further comprises a support frame for supporting the whole device, a belt lifting carrier roller for lifting and assisting in conveying the conveying material, a discharging component for discharging the material on the conveying belt from the conveying belt, and a material guiding component for guiding the discharged material. The belt lifting carrier roller is arranged on the support frame, the conveying belt is arranged on the belt lifting carrier roller, the discharging component is arranged on the support frame and is in contact with the conveying belt, and the material guiding component is arranged on the support frame and is in abutment with the discharging component on one side and is below the conveying belt in surface. The device effectively guarantees the tunneling and slag discharging efficiency of the shield machine launching and subsequent construction, stably promotes the launching construction progress, and reduces the construction period delay caused by slag discharging.

Description

Technical Field

[0001] This application relates to the field of water conservancy and hydropower technology, and in particular to a lateral muck removal device for the initiation of earth pressure shield tunneling machines in small spaces. Background Technology

[0002] In modern underground space development and tunnel construction, shield tunneling technology, with its advantages of high efficiency, safety, and minimal environmental impact, has become a core construction method for traversing complex geological conditions and urban areas. However, shield tunneling in urban areas often faces limited construction conditions and the inability of the shield equipment to properly remove excavated material. Excavated material transportation, as a crucial link in shield tunneling, directly affects the safety, quality, progress, and cost of the entire project. In confined spaces, the gaps between the shield machine and the working shaft wall and surrounding equipment are extremely small, severely compressing the excavation channel (such as the transportation path from the screw conveyor outlet to the excavation truck). The size and travel route of the excavation trucks are strictly limited; large trucks cannot enter, requiring the use of small trucks or specialized transportation equipment, significantly reducing the amount transported per trip. Simultaneously, the tunnel may also need to accommodate the transportation of tunnel segments, grouting materials, etc., leading to interference between excavated material transportation and other materials, frequent congestion, and a significant reduction in excavation efficiency. If excavated material is not removed in a timely manner, it can cause the accumulation of excavated material in the soil chamber, disrupting the earth pressure balance and potentially leading to instability at the excavation face. Therefore, there is an urgent need to develop a lateral muck removal device for the initial launch of earth pressure shield tunneling machines in small spaces, so as to provide a reliable solution for the efficient transportation of muck. Utility Model Content

[0003] To address or partially address the problems existing in related technologies, this application provides a lateral muck removal device for the initial launch of earth pressure shield tunneling machines in small spaces. This device can effectively ensure the efficiency of tunneling and muck removal during the initial launch and subsequent construction of the shield machine, enabling the initial construction progress to proceed steadily and reducing delays in the construction period caused by muck removal.

[0004] This application discloses a lateral muck removal device for the initiation of a small-space earth pressure shield tunneling machine, including a conveyor belt and further comprising:

[0005] Support frame; the support frame is used to support the entire device.

[0006] Belt lifting idlers are used to lift and assist in the conveying of materials on the belt.

[0007] Unloading component, used to unload material from the conveyor belt;

[0008] The material guiding component is used to guide the unloaded material.

[0009] The system includes a belt lifting roller on the support frame, a conveyor belt on the belt lifting roller, a discharge component on the support frame that contacts the conveyor belt, and a guide component on the support frame that abuts against the discharge component on one side, with its surface located below the conveyor belt.

[0010] Optionally, the belt lifting idler includes a first crossbar, a first column, and an idler. The first crossbar is fixedly installed on the top of the two first columns to form a portal frame, and the idler is installed between the two first columns.

[0011] Optionally, the height position of the roller on the first column is adjustable.

[0012] Optionally, the unloading component includes a second crossbar, a second column, and a baffle; the second crossbar is fixedly installed at both ends of the two second columns to form a U-shaped frame, and a baffle is installed at the connection of the U-shaped frame, with a gap in the middle of the baffle for the conveyor belt to pass through only.

[0013] Optionally, two baffles are provided, with the two baffles positioned close to each other at the gap.

[0014] Optionally, a plate on the top of the baffle is inserted into the frame.

[0015] Optionally, the guide component is an open square trough located on one side of the conveyor belt.

[0016] The technical solution provided in this application may include the following beneficial effects:

[0017] This device allows material to be discharged or unloaded from the side of the conveyor belt by setting up unloading components in the direction of belt conveying. In addition, this device makes full use of the space between the reaction frame and the tunnel portal wall, improves the utilization rate of the working shaft space, effectively ensures the tunneling and muck removal efficiency of the shield machine's initial launch and subsequent construction, enables the initial construction progress to proceed steadily, and reduces the construction period delays caused by muck removal.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0019] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0020] Figure 1 This is a schematic diagram of the structure shown in the embodiments of this application;

[0021] Figure label:

[0022] 1. Supporting framework;

[0023] 2. Belt-driven lifting roller; 21. First crossbar; 22. First column; 23. Roller;

[0024] 3. Unloading component; 31. Second crossbar; 32. Second column; 33. Baffle; 34. Gap;

[0025] 4. Material guiding components. Detailed Implementation

[0026] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0027] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] To address the aforementioned issues, this application provides a lateral muck removal device for starting earth pressure shield tunneling machines in small spaces. The technical solution of this application embodiment is described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 The illustrated lateral muck removal device for starting earth pressure shield tunneling machines in small spaces includes a conveyor belt and further includes:

[0032] Support frame 1, which is used to support the entire device;

[0033] Belt lifting idler 2 is used to lift the belt conveyor and assist in the conveying of materials.

[0034] Unloading component 3 is used to unload material from the conveyor belt.

[0035] Material guiding component 4 is used to guide the unloaded material;

[0036] The support frame 1 is provided with a belt lifting roller 2, a conveyor belt is provided on the belt lifting roller 2, a discharge component 3 is provided on the support frame 1, the discharge component 3 is in contact with the conveyor belt, and a guide component 4 is provided on the support frame 1, one side of the guide component 4 abuts against the discharge component 3, and its surface is located below the conveyor belt.

[0037] In this device, through calculations of stress resistance, stability, and durability, the support frame 1 is custom-designed using I20 steel and 10# channel steel, and welded to the reaction frame to ensure the stability of the device. Specifically, for the lateral muck removal device used in small-space earth pressure shield tunneling, two 4.5m long I20 I-beams are welded to the reaction frame and the portal steel ring at 1.5m intervals to form the main frame structure. Ten 1.2m long 10# channel steels are welded to the I20 I-beams for the installation and fixation of the belt lifting roller 2, the material guiding component 4, and the unloading component 3. Targeted adjustments were made to the main conveyor belt, and four sets of belt lifting idlers 2 were added between the reaction frame and the tunnel portal wall to raise the belt height by 40-50cm. This avoids interference with the belt frame while ensuring stable operation and smooth material conveying. Each belt lifting idler 2 includes a first crossbar 21, a first column 22, and an idler 23. The first crossbar 21 is fixedly installed at the top of two first columns 22 to form a portal frame, and the idler 23 is installed between the two first columns 22. The belt lifting idlers 2 are φ100mm, 1m long, and welded to #10 channel steel according to the required lifting height. The unloading component 3 includes a second crossbar 31, a second column 32, and a baffle 33. The second crossbar 31 is fixed at both ends of the two second columns 32 to form a U-shaped frame. The baffle 33 is connected to the U-shaped frame. The middle of the baffle 33 has a gap 34 for the conveyor belt to pass through. It is made of reinforcing steel plate, 1.3m long, 0.5m wide, and 0.5m high, and is arranged in two pieces on the upper and lower sides of the main belt. It is welded to the main frame with 10# channel steel. The reinforcing steel plate and 10# channel steel are positioned with holes and connected with M20 bolts and nuts to form a whole. The unloading component 3 is formed by welding 5mm steel plate. After adjusting the unloading angle and height, it is welded and fixed to the 10# channel steel.

[0038] Considering the structural characteristics of the main conveyor belt and the angle of the discharge port, this device requires a height increase for this section of the conveyor belt to ensure smooth passage between the reaction frame and the tunnel portal wall during equipment advancement. Four sets of idlers are added between the reaction frame and the tunnel portal wall to support and adjust the height of the conveyor belt. The support frame is hoisted to the predetermined position using lifting equipment. Through measurement and calibration, the horizontal and vertical alignment of the support frame 1 is ensured to meet requirements. It is then fixed to the reaction frame and tunnel portal wall using welding or other methods. The belt lifting idlers 2, discharge component 3, and guide component 4 are then lifted sequentially to ensure secure connections and smooth transmission between components. During installation, the design drawings and installation instructions are strictly followed to ensure accurate installation of each component. After installation, the lateral slag discharge device undergoes comprehensive testing. The operating speed of the conveying mechanism, the stability of the transmission system, and the flexibility of the discharge port adjustment components are checked. A small amount of simulated slag is added to the device for trial operation to observe the slag conveying process and check for blockages, spillage, or other problems. Based on the trial operation results, the device was further adjusted and optimized until the lateral muck removal device could operate stably and efficiently. This device allows material on the conveyor belt to be discharged or unloaded from the side. Furthermore, it fully utilizes the space between the reaction frame and the tunnel portal wall, improving the utilization rate of the working shaft space. This effectively ensures the efficiency of tunneling and muck removal during the initial launch and subsequent construction of the tunnel boring machine, allowing the initial construction progress to proceed steadily and reducing delays caused by muck removal.

[0039] In one embodiment, for ease of installation and adjustment, the height position of the idler roller 23 on the first column 22 is adjustable. Specifically, a screw-slider mechanism is provided on the first column 22, and the idler roller 23 is then transferred onto the slider; or multiple screw holes are provided on the first column 22, and a rotating shaft seat is threadedly connected to the first column 22, with the idler roller 23 transferred onto the rotating shaft seat for adjustment.

[0040] In another embodiment, for ease of adjustment and installation, two baffles 33 are provided, with the two baffles 33 positioned close to each other at a gap 34. One method is to fasten the baffle 33 to the frame with screws, and the frame has multiple screw holes for adjustment. Another method is to insert a plate on the top of the baffle 33 into the frame, with a corresponding insertion groove on the frame, and a keyway connecting the groove on the back side. Then, bolts are installed on the baffle 33 to fasten it into the groove after adjustment.

[0041] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0042] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0043] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A lateral muck removal device for starting earth pressure shield tunneling machines in small spaces, comprising a conveyor belt, characterized in that, Also includes: A support frame (1) is provided to support the entire device. Belt lifting idler (2), the belt lifting idler (2) is used to lift the belt conveyor and assist in conveying materials; The unloading component (3) is used to unload the material from the conveyor belt; The material guiding component (4) is used to guide the unloaded material; Among them, a belt lifting roller (2) is set on the support frame (1), a conveyor belt is set on the belt lifting roller (2), a discharge component (3) is set on the support frame (1), the discharge component (3) is in contact with the conveyor belt, a guide component (4) is set on the support frame (1), one side of the guide component (4) abuts against the discharge component (3), and its surface is located below the conveyor belt.

2. The lateral muck removal device for starting earth pressure shield tunneling in small spaces according to claim 1, characterized in that: The belt lifting roller (2) includes a first crossbar (21), a first column (22), and a roller (23). The first crossbar (21) is fixedly installed on the top of the two first columns (22) to form a portal frame, and the roller (23) is transferred between the two first columns (22).

3. A lateral muck removal device for starting earth pressure shield tunneling in a small space, as described in claim 2, is characterized in that: The height position of the idler roller (23) on the first column (22) is adjustable.

4. A lateral muck removal device for starting earth pressure shield tunneling in small spaces according to claim 1, characterized in that: The unloading component (3) includes a second crossbar (31), a second column (32), and a baffle (33); the second crossbar (31) is fixedly installed at both ends of the two second columns (32) to form a U-shaped frame, and the baffle (33) is connected to the U-shaped frame. The baffle (33) has a gap (34) in the middle for the conveyor belt to pass through.

5. A lateral muck removal device for starting earth pressure shield tunneling in a small space, as described in claim 4, characterized in that: The baffle (33) is configured as two pieces, and the two baffles (33) are arranged adjacent to each other at the gap (34).

6. A lateral muck removal device for starting earth pressure shield tunneling in a small space, as described in claim 5, characterized in that: A plate at the top of the baffle (33) is inserted into the square frame.

7. A lateral muck removal device for starting earth pressure shield tunneling in a small space according to claim 1, characterized in that: The material guiding component (4) is an open square trough located on one side of the conveyor belt.

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