A belt conveyor suitable for TBM co-directional tunneling

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By combining a brush roller and a nozzle frame for cleaning and designing an adjustable auxiliary conveyor roller height, the problem of difficult cleaning of belt conveyors during TBM unidirectional tunneling was solved, achieving stable operation and efficient tunneling of the equipment.

CN224512373UActive Publication Date: 2026-07-17ZHONGMACUN MINE OF HENAN COKING COAL ENERGY CO LTD +1

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: ZHONGMACUN MINE OF HENAN COKING COAL ENERGY CO LTD
Filing Date: 2025-09-09
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

Existing belt conveyors are difficult to completely clean up slag and dust during TBM co-directional tunneling, leading to equipment wear, corrosion, and unstable operation, which affects tunneling efficiency.

Method used

The system employs brush roller cleaning and repeatedly rotating nozzle frame spraying for cleaning, followed by drying with a blower. Combined with the adjustable height of the auxiliary conveyor roller, it adapts to different soil conditions and prevents deviation and wear.

Benefits of technology

Thoroughly remove stubborn adhesives from the belt surface, avoid moisture residue, reduce the risk of equipment corrosion, improve operational stability and service life, and ensure continuous and efficient tunneling.

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Abstract

This utility model relates to the field of tunneling belt conveyor technology, and discloses a TBM (Tunnel Boring Machine) co-directional tunneling belt conveyor, including a base. A fixed frame is fixedly connected to the inner wall of the base, and a second motor is fixedly connected to the inner wall of the fixed frame. A cleaning component is provided at the drive end of the second motor for cleaning the belt surface. Multiple fixed frames are fixedly connected to both sides of the top of the base. A secondary conveyor roller is connected to the inner wall of the fixed frame through a movable component for adjusting the height of the secondary conveyor roller. A first motor is fixedly connected to the front end of the base. In this utility model, by using a brush roller for cleaning and a repeatedly rotating spray nozzle frame for spraying, and then drying with a blower after cleaning, stubborn adhering substances on the surface and in the gaps of the belt can be thoroughly removed. This avoids secondary adhesion of excavated soil caused by residual moisture, reduces belt wear and deviation, lowers the risk of equipment corrosion, improves operational stability, extends service life, and ensures continuous and efficient tunneling.

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Description

Technical Field

[0001] This utility model relates to the field of tunneling belt conveyor technology, and in particular to a belt conveyor suitable for TBM co-directional tunneling. Background Technology

[0002] The belt conveyor, suitable for TBM co-directional tunneling, is a key piece of equipment for efficiently transporting excavated soil in tunnel construction. Through modular expansion, curve adaptation and intelligent collaborative design, it matches the excavation volume of multiple TBMs, and can operate continuously and stably in confined and humid environments, reducing equipment interference, improving tunneling efficiency, reducing energy consumption and safety risks, and ensuring the smooth progress of tunnel projects.

[0003] In TBM tunneling operations, belt conveyors, as the core equipment for transporting excavated soil, are in a harsh environment with high dust, high humidity, and sticky excavated soil for a long time. A large amount of excavated soil, mud, and dust easily adhere to the surface of the belt. Existing belt cleaning devices mostly use only a single brush or water spray structure, which is difficult to completely remove stubborn adhesives. Residual moisture will cause excavated soil to adhere again, accelerating belt wear and deviation. At the same time, the humid environment is prone to equipment corrosion, reducing the operational stability and service life of the belt conveyor. In severe cases, it is necessary to stop the machine for cleaning, which affects the TBM tunneling efficiency.

[0004] Therefore, in view of the existing problem of difficulty in cleaning the belt surface, there is a need for a TBM co-directional tunneling belt conveyor that can solve the above problems. Utility Model Content

[0005] To address the problem of difficulty in cleaning the belt surface in existing technologies, this application provides a method for cleaning belt conveyors used in TBM co-directional tunneling. By using brush rollers for cleaning and repeatedly rotating nozzle frames for spraying, followed by drying with a blower after cleaning, it can thoroughly remove stubborn adhering substances from the belt surface and gaps, avoid secondary adhesion of excavated soil caused by residual moisture, reduce belt wear and deviation, lower the risk of equipment corrosion, improve operational stability, extend service life, and ensure continuous and efficient tunneling.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A conveyor belt system suitable for TBM (Tunnel Boring Machine) co-directional tunneling includes a base. A fixed frame is fixedly connected to the inner wall of the base. A second motor is fixedly connected to the inner wall of the fixed frame. A cleaning component is provided at the drive end of the second motor for cleaning the surface of the conveyor belt. Multiple fixed frames are fixedly connected to both sides of the top of the base. A secondary conveyor roller is connected to the inner wall of the fixed frame through a movable component for adjusting the height of the secondary conveyor roller. A first motor is fixedly connected to the front end of the base. Main conveyor rollers are rotatably connected to both sides of the inner wall of the base. The main conveyor rollers are connected to each other through the inner diameter of the conveyor belt. A motor is fixedly connected to the left side of the front end of the base. The front end of the left main conveyor roller is fixedly connected to the drive end of the motor.

[0008] As a further improvement of this utility model, the cleaning component includes a missing gear fixedly connected to the drive end of the second motor, a first gear meshing with the outer wall of the missing gear, a nozzle frame fixedly connected to the left end of the first gear, and the right end of the first gear rotatably connected to the inner wall of the fixed frame.

[0009] As a further improvement of this utility model, a torsion spring is fixedly connected to the left end of the nozzle frame, and the other end of the torsion spring is fixedly connected to the inner wall of the fixed frame.

[0010] As a further improvement of this utility model, a folded tube is fixedly connected to the inner wall of the nozzle frame, and the outer wall of the folded tube is fixedly connected to the inner wall of the base.

[0011] As a further improvement of this utility model, multiple fans are fixedly connected to the inner wall of the base, and a brush roller is fixedly connected to one drive end of the motor.

[0012] As a further improvement of this utility model, the movable component includes a threaded rod threadedly connected to the inner wall of the fixed frame, and a connecting frame rotatably connected to the outer wall of the threaded rod, and the outer wall of the connecting frame slidably connected to the inner wall of the fixed frame.

[0013] As a further improvement of this utility model, each of the connecting frames is fixedly connected to a slider at its bottom end, and the outer wall of each slider is rotatably connected to the inner wall of the auxiliary conveying roller.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0015] 1. In this utility model, by using a brush roller for cleaning and a repeatedly rotating nozzle frame for spraying, and then drying it with a blower after cleaning, stubborn adhesives on the surface and gaps of the belt can be thoroughly removed, avoiding secondary adhesion of slag caused by residual moisture, reducing belt wear and deviation, reducing the risk of equipment corrosion, improving operational stability, extending service life, and ensuring continuous and efficient tunneling of the equipment.

[0016] 2. In this utility model, by adjusting the height of the auxiliary conveyor rollers on both sides, it can adapt to slag with different particle sizes and moisture content. By changing the arc shape of the belt to prevent material leakage, it can correct belt deviation, avoid edge wear, and adapt to tunnel turns and undulating terrain. It can balance centrifugal force and bending requirements, maintain stable tension, and ensure conveying efficiency and equipment life. Attached Figure Description

[0017] Figure 1 This is a perspective view of a TBM co-directional tunneling belt conveyor proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of a base suitable for a TBM co-directional tunneling conveyor belt, as proposed in this utility model.

[0019] Figure 3 This utility model provides a sectional view of a fixed frame suitable for a TBM (Tunnel Boring Machine) co-directional tunneling conveyor.

[0020] Figure 4 This utility model presents a diagram of a gearless structure for a TBM co-directional tunneling belt conveyor.

[0021] Figure 5 This is a cross-sectional view of a fixing frame suitable for a TBM (Tunnel Boring Machine) co-directional tunneling belt conveyor proposed in this utility model.

[0022] Legend:

[0023] 1. Base; 2. Main conveyor roller; 3. Motor 1; 4. Brush roller; 5. Fixing frame; 6. Motor 2; 7. Gear missing; 8. Gear 1; 9. Nozzle holder; 10. Torsion spring; 11. Folding tube; 12. Fan; 13. Fixing frame; 14. Threaded rod; 15. Connecting frame; 16. Slider; 17. Secondary conveyor roller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] refer to Figures 2-4 As shown in Example 1: A conveyor belt system suitable for TBM co-directional tunneling includes a base 1, a fixed frame 5 fixedly connected to the inner wall of the base 1, a motor 6 fixedly connected to the inner wall of the fixed frame 5, a gear 7 fixedly connected to the drive end of the motor 6, a gear 8 meshing with the outer wall of the gear 7, a nozzle frame 9 fixedly connected to the left end of the gear 8, and a torsion spring 10 fixedly connected to the right end of the gear 8 rotatably connected to the inner wall of the fixed frame 5. A torsion spring 10 fixedly connected to the left end of the nozzle frame 9, and the other end of the torsion spring 10 fixedly connected to the inner wall of the fixed frame 5. A folded tube 11 fixedly connected to the inner wall of the nozzle frame 9, and a folded tube 11 fixedly connected to the outer wall of the folded tube 11 fixedly connected to the inner wall of the base 1. Multiple fans 12 are fixedly connected to the inner wall of the base 1. A brush roller 4 is fixedly connected to the drive end of the motor 3 for cleaning the surface of the conveyor belt.

[0031] Specifically, when the torsion spring 10 drives the nozzle frame 9 to rotate in the opposite direction, the nozzle frame 9 will stop shaking before the missing gear 7 meshes with the gear 8. The lower side of the inner wall of the base 1 is sloped to discharge the sprayed water and slag. Filter plates are fixed on both the front and rear sides of the blower 12 to prevent slag or dust from affecting the blower 12. The belt is made of rubber. It is cleaned by using the brush roller 4 and the repeatedly rotating nozzle frame 9, and then dried by the blower 12 after cleaning. This can thoroughly remove stubborn adhesives from the surface and gaps of the belt, prevent the secondary adhesion of slag caused by residual moisture, reduce belt wear and deviation, reduce the risk of equipment corrosion, improve operational stability, extend service life, and ensure continuous and efficient tunneling.

[0032] refer to Figure 1 and Figure 5 As shown in Embodiment 2: Multiple fixed frames 13 are fixedly connected to both sides of the top of the base 1. A motor 3 is fixedly connected to the front end of the base 1. Main conveying rollers 2 are rotatably connected to both sides of the inner wall of the base 1. The main conveying rollers 2 are connected to each other through the inner diameter of the belt. A motor is fixedly connected to the left side of the front end of the base 1. The front end of the left main conveying roller 2 is fixedly connected to the drive end of the motor. Threaded rods 14 are threadedly connected to the inner wall of each fixed frame 13. Connecting frames 15 are rotatably connected to the outer wall of each threaded rod 14. The outer wall of each connecting frame 15 is slidably connected to the inner wall of the fixed frame 13. A slider 16 is fixedly connected to the bottom end of each connecting frame 15. The outer wall of each slider 16 is rotatably connected to the inner wall of the auxiliary conveying roller 17 for adjusting the height of the auxiliary conveying roller 17.

[0033] Specifically, a controller is installed at the front end of the base 1. The controller is electrically connected to motor 3, motor 6 and motor. By adjusting the height of the auxiliary conveyor rollers 17 on both sides, it can adapt to slag with different particle size and moisture content. By changing the belt arc shape, it can prevent material leakage, correct belt deviation, avoid edge wear, and adapt to tunnel turns and undulating terrain. It can balance centrifugal force and bending requirements, maintain stable tension, and ensure conveying efficiency and equipment life.

[0034] Working principle: First, when it is necessary to adjust the height of the auxiliary conveyor rollers 17 on both sides, simply rotate the threaded rod 14. The threaded rod 14 drives the connecting frame 15 to slide upward, and drives the slider 16 at the bottom and the auxiliary conveyor rollers 17 to rise and fall, thereby adjusting the height of the auxiliary conveyor rollers 17 and supporting both sides of the belt. Then, the motor is started by the controller. The motor drives the main conveyor roller 2 on the left to rotate, and drives the belt on the outer wall to rotate, conveying the slag placed on the upper side of the belt and discharging it at the other end. After the belt moves to the lower side, the controller starts motor 3, motor 6 and fan 12. Motor 3 drives the brush roller. 4. Rotate to clean the surface of the belt. After cleaning, it will move to the upper side of the fixed frame 5 and deliver clean water to the nozzle frame 9 through the folding tube 11 to rinse the belt. At the same time, the motor 6 drives the missing gear 7 to rotate. The missing gear 7 will drive the gear 8 and the nozzle frame 9 to rotate. After the nozzle frame 9 rotates 90 degrees, the missing gear 7 will no longer mesh with the gear 8. Through the torsion spring 10, it will drive the nozzle frame 9 to rotate in the opposite direction. After the missing gear 7 rotates one revolution, it will mesh with the gear 8 again and drive the nozzle frame 9 to rotate repeatedly to spray clean water on the belt. After rinsing, the fan 12 will blow the water off the belt.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A TBM jumbo face conveyor suitable for use in a TBM face conveyor, characterized in that, The system includes a base (1), a fixed frame (5) is fixedly connected to the inner wall of the base (1), a motor (6) is fixedly connected to the inner wall of the fixed frame (5), a cleaning component is provided at the drive end of the motor (6) for cleaning the surface of the belt, multiple fixed frames (13) are fixedly connected to both sides of the top of the base (1), an auxiliary conveyor roller (17) is connected to the inner wall of the fixed frame (13) through a movable component for adjusting the height of the auxiliary conveyor roller (17), a motor (3) is fixedly connected to the front end of the base (1), a main conveyor roller (2) is rotatably connected to both sides of the inner wall of the base (1), the main conveyor rollers (2) are connected to each other through the inner diameter of the belt, a motor is fixedly connected to the left side of the front end of the base (1), and the front end of the left main conveyor roller (2) is fixedly connected to the drive end of the motor.

2. A belt conveyor suitable for TBM simultaneous excavation according to claim 1, characterized in that: The cleaning assembly includes a missing gear (7) fixedly connected to the drive end of motor two (6), a gear one (8) meshing with the outer wall of the missing gear (7), a nozzle frame (9) fixedly connected to the left end of the gear one (8), and the right end of the gear one (8) rotatably connected to the inner wall of the fixed frame (5).

3. A belt conveyor suitable for TBM simultaneous excavation according to claim 2, characterized in that: The nozzle holder (9) is fixedly connected to a torsion spring (10) at its left end, and the other end of the torsion spring (10) is fixedly connected to the inner wall of the fixed frame (5).

4. A belt conveyor suitable for TBM simultaneous excavation according to claim 2, characterized in that: The nozzle holder (9) has a folded tube (11) fixedly connected to its inner wall, and the outer wall of the folded tube (11) is fixedly connected to the inner wall of the base (1).

5. A belt conveyor suitable for TBM simultaneous excavation according to claim 2, characterized in that: Multiple fans (12) are fixedly connected to the inner wall of the base (1), and a brush roller (4) is fixedly connected to the drive end of the motor (3).

6. A belt conveyor suitable for TBM simultaneous excavation according to claim 1, characterized in that: The movable component includes a threaded rod (14) threaded to the inner wall of the fixed frame (13), and a connecting frame (15) rotatably connected to the outer wall of the threaded rod (14), and the outer wall of the connecting frame (15) slidably connected to the inner wall of the fixed frame (13).

7. A belt conveyor suitable for use in a TBM jumbo drilling machine according to claim 6, characterized in that: Each of the connecting frames (15) has a slider (16) fixedly connected to its bottom end, and the outer wall of the slider (16) is rotatably connected to the inner wall of the auxiliary conveying roller (17).