A device for accurately measuring the amount of excavated soil during shield tunneling.
By using a device that combines supports and conveyor belts with weighing and identification components during tunnel boring, the problem of low accuracy in calculating the amount of excavated soil was solved, enabling real-time and accurate monitoring of the amount of excavated soil and protection of the sensors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC TUNNEL ENG CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-31
AI Technical Summary
In shield tunnel construction, existing technologies for calculating the amount of excavated soil are easily affected by environmental factors, resulting in low accuracy and poor timeliness, making it difficult to monitor in real time.
It adopts a support and conveyor belt structure, combined with multiple sets of weighing and identification components, to monitor the weight of the slag in real time through the weighing frame and guide wheel system, and to make accurate measurements using weighing sensors and identification blocks.
It enables real-time and accurate monitoring of slag volume, improves the accuracy and reliability of slag volume detection, and reduces the possibility of sensor damage.
Smart Images
Figure CN224581006U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of muck discharge measurement devices, and in particular to a device for accurately measuring the amount of muck discharged during shield tunneling. Background Technology
[0002] During shield tunnel construction, the amount of excavated soil is crucial for determining whether the tunnel boring machine (TBM) is progressing normally. Increased excavation indicates over-excavation in front of the TBM, potentially leading to soil collapse; decreased excavation indicates wear on the TBM cutters, reducing tunneling efficiency. Therefore, real-time monitoring of the excavation volume is necessary.
[0003] Current measurement methods mainly include volumetric estimation, weighing, and laser scanning. Volumetric estimation is mainly performed using volumetric flow sensors; weighing relies on weighing sensors on dump trucks; and laser scanning estimates volume by creating a 3D model of the dump pile. All of these methods are susceptible to environmental factors in practical use and have poor monitoring timeliness, which can lead to low measurement accuracy. Therefore, improvements are needed. Utility Model Content
[0004] To address the aforementioned issues, this application provides a device for accurately measuring the amount of excavated material discharged during tunnel boring machine (TBM) excavation.
[0005] The device for accurately measuring the amount of excavated soil during shield tunneling provided in this application adopts the following technical solution: A device for accurately measuring the amount of excavated soil during tunnel boring machine (TBM) excavation includes a support frame and a conveyor belt. The conveyor belt is mounted on the support frame, which is equipped with a drive assembly for driving the conveyor belt. The support frame is also equipped with several sets of weighing components and identification components. Each set of weighing components corresponds to a set of identification components. Each weighing component includes a weighing frame, a first guide wheel, and a weighing rod. The weighing frame is slidably connected to the support frame in a vertical direction, and the first guide wheel is rotatably connected to the weighing frame. The weighing rod is located on the side of the weighing frame near the identification components. The identification components are used to identify the weight of the excavated soil as it passes through the weighing frame.
[0006] By adopting the above technical solution, the drive component controls the conveyor belt to transport the excavated soil. When the excavated soil passes the weighing frame, the conveyor belt is compressed and moves towards the first guide wheel, which provides support for the conveyor belt. Simultaneously, under the weight of the excavated soil, the weighing frame and weighing rod move towards the identification component, which measures the weight of the excavated soil. Furthermore, because multiple weighing components are set up, the function of real-time measurement of the excavated soil quantity is realized, thereby improving the accuracy of the measurement.
[0007] Preferably, the bracket has a guide hole, the weighing frame has a guide plate, the guide plate is slidably connected to the inner wall of the guide hole, and a spring is provided in the guide hole, with one end of the spring connected to the guide plate and the other end connected to the inner wall of the guide hole.
[0008] By adopting the above technical solution, in the initial state, the spring provides support for the guide plate and the weighing frame, at which point the weighing rod is separated from the recognition component, reducing the possibility of problems arising from prolonged operation of the recognition component. During the movement of the weighing frame, the weighing frame drives the guide plate to move, causing the spring to be in a compressed state, reducing the possibility of the weighing rod directly impacting the recognition component.
[0009] Preferably, a bellows is sleeved on the outer side of the spring, one end of which is connected to the guide plate and the other end is connected to the inner wall of the guide hole.
[0010] By adopting the above technical solution, the bellows makes it less likely for external impurities to damage the spring.
[0011] Preferably, the identification component includes a weighing sensor and an identification block, wherein the weighing sensor is mounted on a bracket and the identification block is mounted on the side of the weighing sensor near the weighing rod.
[0012] By adopting the above technical solution, the weighing rod contacts the identification block, and the identification block cooperates with the weighing sensor to detect the weight of the slag.
[0013] Preferably, the bracket is provided with a cover, which covers the outside of the weighing sensor and the identification block. The cover has a clearance hole, and the identification block is disposed in the clearance hole.
[0014] By adopting the above technical solution, the casing makes it less likely for external impurities to damage the weighing sensor.
[0015] Preferably, the weighing frame is provided with two opposing second guide wheels, each of which is rotatably connected to the weighing frame. The first guide wheel is disposed between the two second guide wheels, and the end of each second guide wheel closer to the first guide wheel is oriented towards the first guide wheel compared to the end farther away from the first guide wheel.
[0016] Preferably, the cover has several heat dissipation holes.
[0017] By adopting the above technical solution, the conveyor belt deforms when the excavated soil is on it. When the conveyor belt comes into contact with the two second guide wheels, the tilted arrangement of the second guide wheels causes the excavated soil to concentrate at the first guide wheel, making it easier for the weighing frame and weighing rod to accurately transmit the pressure to the weighing sensor.
[0018] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up multiple sets of weighing and identification components, the amount of construction waste can be monitored in real time, which improves the accuracy of monitoring the actual weight of construction waste. 2. By setting an inclined second guide wheel, the slag is piled up at the first guide wheel, so that the weighing frame and weighing rod can transmit the pressure to the weighing sensor more accurately. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0020] Figure 2 This is a structural schematic diagram illustrating the positional relationship between the weighing component and the identification component in the embodiments of this application.
[0021] Explanation of reference numerals in the attached drawings: 1. Support frame; 11. Discharge hopper; 12. Guide hole; 121. Spring; 122. Bellows; 13. Cover; 131. Clearance hole; 132. Heat dissipation hole; 2. Conveyor belt; 3. Drive assembly; 31. First drive wheel; 32. Second drive wheel; 33. Motor; 4. Weighing assembly; 41. Weighing frame; 411. Guide plate; 42. First guide wheel; 43. Weighing rod; 44. Second guide wheel; 5. Identification assembly; 51. Weighing sensor; 52. Identification block. Detailed Implementation
[0022] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0024] This application discloses a device for accurately measuring the amount of excavated soil during shield tunneling, such as... Figure 1 and Figure 2As shown, the system includes a support frame 1 and a conveyor belt 2. The conveyor belt 2 is mounted on the support frame 1, and the support frame 1 is equipped with a drive assembly 3 for driving the conveyor belt 2. The support frame 1 has several sets of weighing components 4 and identification components 5, with each set of weighing components 4 corresponding to a set of identification components 5. When the excavated soil falls onto the conveyor belt 2, the drive assembly 3 controls the conveyor belt 2 to rotate. As the excavated soil passes over the weighing components 4, the weighing components 4 cooperate with the corresponding identification components 5 to calculate the amount of excavated soil. At this time, under the action of multiple sets of weighing components 4 and identification components 5, the function of real-time detection of the amount of excavated soil can be achieved, thereby improving the accuracy of excavated soil quantity detection.
[0025] Reference Figure 1 The support frame 1 is connected to the discharge hopper 11, which is located at the end of the conveyor belt 2 for subsequent transfer of the slag.
[0026] Reference Figure 1 The drive assembly 3 includes a first drive wheel 31 and a second drive wheel 32, both of which are rotatably connected to the bracket 1 and are arranged opposite to each other on the bracket 1. The conveyor belt 2 is wound around the first drive wheel 31 and the second drive wheel 32, and the motor 33 is mounted on the bracket 1, with its output end connected to the first drive wheel 31.
[0027] Motor 33 controls the first drive wheel 31 to rotate, and the first drive wheel 31 controls the conveyor belt 2 and the second drive wheel 32 to rotate in sequence. The conveyor belt 2 can then control the slag to move toward the discharge hopper 11.
[0028] Reference Figure 2 The weighing assembly 4 includes a weighing frame 41, a first guide wheel 42, and a weighing rod 43. The weighing frame 41 is slidably connected to the support 1 in the vertical direction, and the first guide wheel 42 is rotatably connected to the weighing frame 41. The weighing rod 43 is located on the side of the weighing frame 41 near the identification assembly 5, which is used to identify the weight of the slag as it passes through the weighing frame 41.
[0029] The identification component 5 includes a weighing sensor 51 and an identification block 52. The weighing sensor 51 is mounted on the bracket 1, and the identification block 52 is mounted on the side of the weighing sensor 51 near the weighing rod 43.
[0030] When the excavated soil passes the weighing frame 41, the conveyor belt 2 deforms under the weight and comes into contact with the first guide wheel 42, causing the first guide wheel 42 to move downwards. At this time, both the weighing frame 41 and the weighing rod 43 move towards the identification block 52. When the weighing rod 43 contacts the identification block 52, the weighing sensor 51 can detect the weight of the excavated soil. Under the action of the identification block 52, the step of the weighing rod 43 directly hitting the weighing sensor 51 is reduced, lowering the possibility of damage to the weighing sensor 51.
[0031] Reference Figure 2 To further reduce the possibility of damage to the load cell 51, a guide hole 12 is provided on the bracket 1, and a guide plate 411 is provided on the weighing frame 41. The guide plate 411 is slidably connected to the inner wall of the guide hole 12. A spring 121 is provided in the guide hole 12, with one end of the spring 121 connected to the guide plate 411 and the other end connected to the inner wall of the guide hole 12. A bellows 122 is sleeved on the outside of the spring 121, with one end of the bellows 122 connected to the guide plate 411 and the other end connected to the inner wall of the guide hole 12.
[0032] In the initial state, spring 121 provides support for guide plate 411 and weighing frame 41. At this time, weighing rod 43 is separated from identification component 5, reducing the possibility of problems arising from prolonged operation of identification component 5. During the movement of weighing frame 41, weighing frame 41 drives guide plate 411 to move, causing spring 121 to be in a compressed state, reducing the possibility of weighing rod 43 directly impacting identification component 5. Furthermore, during the use of spring 121, bellows 122 prevents external impurities from easily damaging spring 121.
[0033] Reference Figure 1 and Figure 2 The bracket 1 is equipped with a cover 13, which covers the weighing sensor 51 and the identification block 52. The cover 13 has a clearance hole 131, in which the identification block 52 is disposed. The cover 13 also has several heat dissipation holes 132, which facilitate heat dissipation and prevent external impurities from damaging the weighing sensor 51.
[0034] Reference Figure 2 To improve the detection accuracy of the load cell 51, the weighing frame 41 is provided with two opposing second guide wheels 44, each of which is rotatably connected to the weighing frame 41. A first guide wheel 42 is disposed between the two second guide wheels 44, and the end of each second guide wheel 44 closer to the first guide wheel 42 is oriented towards the first guide wheel 42 compared to the end farther away from the first guide wheel 42.
[0035] When the excavated soil is on the conveyor belt 2, the conveyor belt 2 deforms. When the conveyor belt 2 comes into contact with the two second guide wheels 44, the excavated soil is concentrated at the first guide wheel 42 due to the inclined setting of the second guide wheels 44, which makes it easier for the weighing frame 41 and the weighing rod 43 to transmit the pressure to the weighing sensor 51 more accurately.
[0036] The implementation principle of the device for accurately measuring the amount of excavated soil during shield tunneling in this embodiment is as follows: During the process of conveying the excavated soil by the conveyor belt 2, when the excavated soil moves to the weighing component 4, the weighing component 4 cooperates with the identification component 5 at the corresponding position to monitor the weight of the excavated soil in real time, thereby realizing the function of real-time monitoring of the amount of excavated soil and improving the accuracy of monitoring the amount of excavated soil.
[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A device for accurately measuring the amount of muck discharged from a shield tunneling machine, characterized by: The system includes a support (1) and a conveyor belt (2). The conveyor belt (2) is mounted on the support (1). The support (1) is equipped with a drive assembly (3) for driving the conveyor belt (2). The support (1) is equipped with several sets of weighing assemblies (4) and identification assemblies (5). Each set of weighing assemblies (4) corresponds to a set of identification assemblies (5). The weighing assembly (4) includes a weighing frame (41), a first guide wheel (42), and a weighing rod (43). The weighing frame (41) is slidably connected to the support (1) in the vertical direction. The first guide wheel (42) is rotatably connected to the weighing frame (41). The weighing rod (43) is located on the side of the weighing frame (41) close to the identification assembly (5). The identification assembly (5) is used to identify the weight of the slag when it passes through the weighing frame (41).
2. The device for accurately measuring the amount of spoil discharged by a shield tunneling machine according to claim 1, wherein: The bracket (1) has a guide hole (12), and the weighing frame (41) has a guide plate (411). The guide plate (411) is slidably connected to the inner wall of the guide hole (12). A spring (121) is provided in the guide hole (12). One end of the spring (121) is connected to the guide plate (411), and the other end is connected to the inner wall of the guide hole (12).
3. The device for accurately measuring the amount of muck discharged by a tunneling shield according to claim 2, characterized in that: A bellows tube (122) is sleeved on the outside of the spring (121). One end of the bellows tube (122) is connected to the guide plate (411), and the other end is connected to the inner wall of the guide hole (12).
4. The device for accurately measuring the amount of muck discharged by a shield tunneling machine according to claim 1, wherein: The identification component (5) includes a weighing sensor (51) and an identification block (52). The weighing sensor (51) is mounted on the bracket (1), and the identification block (52) is mounted on the side of the weighing sensor (51) near the weighing rod (43).
5. The device for accurately measuring the amount of muck discharged by a tunneling shield according to claim 4, characterized in that: The bracket (1) is provided with a cover (13), which covers the outside of the weighing sensor (51) and the identification block (52). The cover (13) has a clearance hole (131), and the identification block (52) is disposed in the clearance hole (131).
6. The device for accurately measuring the amount of muck discharged by a tunneling shield according to claim 5, characterized in that: The cover (13) has several heat dissipation holes (132).
7. The device for accurately measuring the amount of muck discharged by a tunneling shield according to claim 1, characterized in that: The weighing frame (41) is provided with two opposing second guide wheels (44), each of the second guide wheels (44) being rotatably connected to the weighing frame (41). The first guide wheel (42) is disposed between the two second guide wheels (44), and the end of each second guide wheel (44) closer to the first guide wheel (42) is oriented towards the first guide wheel (42) compared to the end farther away from the first guide wheel (42).