Shield machine hydraulic system disassembly-free on-machine detection device and disassembly-free detection system

Abstract

The utility model provides a kind of shield machine hydraulic system exempts from to dismantle in-machine detection device and exempts from to dismantle detection system, including hydraulic pump, overflow valve, reversing valve and detection module: wherein, the pressure output end of hydraulic pump is communicated with the hydraulic chamber of the hydraulic equipment to be detected;Overflow valve is connected in the communication oil circuit of hydraulic pump and the equipment to be detected;Reversing valve is connected between hydraulic pump and the hydraulic equipment to be detected, and is used to switch the power output path of hydraulic pump between the two hydraulic chambers of the piston two sides of the hydraulic equipment to be detected;Detection module includes pressure sensor, temperature sensor and vibration sensor, vibration sensor and temperature sensor are all arranged at the outer periphery of the hydraulic equipment to be detected, and pressure sensor is arranged at the pipeline of the hydraulic chamber communication of hydraulic pump and the hydraulic equipment to be detected.Compared with prior art, the utility model solves the technical problems of low efficiency and unsatisfactory data acquisition of the existing detection method.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic testing, and more specifically, it relates to an on-machine testing device for the hydraulic system of a tunnel boring machine that does not require disassembly. This utility model also relates to a testing system that does not require disassembly. Background Technology

[0002] In the hydraulic system of a tunnel boring machine (TBM), its internal components are subject to heavy external loads, are numerous, have complex relationships, and are often directly exposed to harsh external environments, leading to a high probability of failure. The hydraulic system is one of the most critical core components of a TBM; a failure in this system will significantly impact the entire tunneling operation. Current TBMs cannot perform real-time monitoring of their internal hydraulic equipment. To ensure the safe operation of the TBM, it is necessary to test the parameters of the hydraulic system components to understand their operating status. However, current testing methods require disassembling the hydraulic components and transferring them to a test bench, which is time-consuming, labor-intensive, and wasteful of resources. Furthermore, because the hydraulic components are tested offline, this method is detached from the actual on-site working conditions, resulting in incomplete and unreliable data collection. Utility Model Content

[0003] The purpose of this invention is to provide an on-machine inspection device for the hydraulic system of a tunnel boring machine that does not require disassembly, so as to solve the technical problems of low efficiency and unsatisfactory data acquisition in existing inspection methods.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a non-disassembly on-machine inspection device for the hydraulic system of a tunnel boring machine, comprising:

[0005] A hydraulic pump, wherein the pressure output end of the hydraulic pump is connected to the hydraulic chamber of the hydraulic equipment to be tested;

[0006] The relief valve is connected in the oil circuit between the hydraulic pump and the equipment to be tested.

[0007] A reversing valve is connected between the hydraulic pump and the hydraulic device under test, and is used to switch the power output path of the hydraulic pump between two hydraulic chambers on both sides of the piston of the hydraulic device under test.

[0008] The detection module includes a pressure sensor, a temperature sensor, and a vibration sensor. The vibration sensor and the temperature sensor are both located on the outer periphery of the hydraulic equipment to be tested, and the pressure sensor is located in the pipeline connecting the hydraulic pump and the hydraulic chamber of the hydraulic equipment to be tested.

[0009] In one feasible implementation, the shield machine hydraulic system non-disassembly on-machine testing device further includes an integrated plate, in which hydraulic pipelines are provided, and the hydraulic pump, the overflow valve, the reversing valve and the pressure sensor are all located on the integrated plate.

[0010] In one feasible implementation, the shield machine hydraulic system non-disassembly on-machine testing device further includes a hydraulic accumulator, which is located in the pipeline connecting the hydraulic pump and the hydraulic chamber of the hydraulic equipment to be tested.

[0011] In one feasible implementation, the shield machine hydraulic system non-disassembly on-machine testing device further includes a speed regulating valve, which is located on the integrated plate and is used to adjust the stroke speed of the hydraulic pump.

[0012] In one feasible implementation, the shield machine hydraulic system non-disassembly on-machine inspection device further includes a traveling mechanism. The traveling mechanism includes a bottom plate, a handle, and traveling wheels. The handle is located on the top of the integrated plate, the bottom plate is located at the bottom of the integrated plate and is perpendicular to the integrated plate, and the traveling wheels are located on the lower surface of the bottom plate.

[0013] In one feasible implementation, the walking wheel includes a wheel body and a mounting shaft. The mounting shaft is located on the lower surface of the base plate and extends in the vertical direction. The wheel body is rotatably connected to the mounting shaft, and the wheel body has degrees of freedom to rotate about its own axis and about the axis of the mounting shaft. The axis of the wheel body itself is perpendicular to the axis of the mounting shaft.

[0014] In one feasible implementation, the traveling wheel further includes a locking bolt, which rotates synchronously with the traveling wheel around the mounting shaft, and as the locking bolt rotates, the locking bolt abuts against the wheel surface of the traveling wheel.

[0015] Compared with existing technologies, the advantages of the shield machine hydraulic system non-disassembly on-machine inspection device provided by this utility model are as follows:

[0016] First, the hydraulic pump directly provides controllable pressure to the hydraulic chamber of the hydraulic equipment under test. The relief valve limits the maximum system pressure to ensure safety, and the reversing valve flexibly switches the hydraulic pump power output to different chambers on both sides of the piston. In conjunction with vibration and temperature sensors arranged around the equipment, the mechanical vibration and temperature rise of the equipment during operation are sensed in real time, and pressure sensors set on the connecting pipeline accurately measure the working pressure of the hydraulic system. Thus, this invention can perform in-situ, real-time, and comprehensive detection and monitoring of the key operating parameters (pressure, temperature, vibration) of the equipment without disassembling it and maintaining its original installation state and working environment. This achieves the technical effect of comprehensively evaluating the sealing performance, wear condition, smooth operation, and system efficiency of the hydraulic equipment. This effectively solves the technical problem in the prior art that the need to disassemble the equipment and transport it back to the laboratory for testing leads to changes in the testing environment, changes in the installation state, and loss of dynamic characteristics, ultimately resulting in inaccurate test results. At the same time, since this invention can test the hydraulic system of the tunnel boring machine without stopping the entire machine, it greatly reduces the direct and indirect losses caused by downtime.

[0017] Secondly, by integrating the hydraulic pump, relief valve, directional valve, and pressure sensor onto an integrated plate with internal hydraulic lines, a modular and compact layout of the core hydraulic components and key sensors of the testing device is achieved. The pre-set oil circuits within the integrated plate replace complex field piping connections, significantly reducing the number of exposed joints. Combined with the integrated installation method, this effectively reduces the risk of leakage during testing due to loose pipe connections or poor joint sealing, improving the reliability and sealing of the testing device. At the same time, the modular design greatly simplifies the on-site installation and disassembly process, shortens the testing preparation time, improves testing efficiency, and makes the entire testing device easier to carry, move, and operate, further strengthening the advantages of non-disassembly, on-machine, and rapid testing, which helps to solve the problems of low on-site testing efficiency and poor reliability.

[0018] Furthermore, the hydraulic accumulator enables the absorption and storage of system pressure fluctuations. This accumulator effectively absorbs pressure pulsations from the hydraulic pump output and hydraulic shocks generated by the movement of the equipment under test (especially during reversals or sudden load changes). Combined with a pressure sensor, this results in more stable and accurate system pressure readings, reducing the interference of pressure fluctuations on test results (especially pressure holding tests and leakage tests). Simultaneously, the accumulator can provide or absorb additional flow in a short time, helping to stabilize system pressure. Particularly in testing conditions requiring pressure holding, it reduces frequent start-stop or loading of the hydraulic pump, improving test stability and accuracy. This helps solve the technical problem of dynamic pressure fluctuations affecting test accuracy and stability.

[0019] Furthermore, by placing the speed control valve on the integrated plate, precise adjustment of the hydraulic pump's output flow (and thus the movement speed of the hydraulic cylinder piston) is achieved. Operators can conveniently and quickly adjust the opening of the speed control valve according to different testing needs (such as testing pressure characteristics and vibration characteristics at different speeds or conducting slow-speed pressure holding leakage tests), thereby controlling the extension / retraction speed of the piston of the hydraulic equipment under test. This controllable speed adjustment capability allows the testing device to simulate different working conditions of hydraulic equipment in actual operation, obtaining more comprehensive and representative performance data, improving the flexibility and applicability of the test, and helping to solve the technical problem that a single speed test cannot fully reflect the actual working performance of the equipment.

[0020] Another objective of this invention is to provide a non-disassembly-based inspection system, including the non-disassembly-based on-machine inspection device for the shield machine hydraulic system mentioned above.

[0021] Compared to existing technologies, this system can be quickly deployed to the tunnel boring machine (TBM) site to conduct in-situ, comprehensive performance testing and condition assessment of key hydraulic actuators (such as propulsion cylinders, articulated cylinders, and segment assembly machine cylinders) without disassembling any of the hydraulic equipment being tested, thus preserving their true working condition to the greatest extent possible and obtaining extremely accurate test data. This system significantly improves the efficiency, accuracy, and convenience of TBM hydraulic system testing, greatly reducing downtime for disassembly and reassembly, lowering maintenance costs and operational risks. It fundamentally solves the core technical problems of traditional testing methods, such as test distortion, low efficiency, and high costs due to disassembly and transportation, as well as the huge losses from overall downtime. It provides a powerful and efficient tool for condition monitoring, preventative maintenance, and fault diagnosis of TBM hydraulic systems. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 these drawings without creative effort. In the drawings:

[0023] Fig. 1 A schematic diagram of the front structure of the shield machine hydraulic system non-disassembly on-machine inspection device provided by this utility model;

[0024] Fig. 2 This is a schematic diagram of the back structure of the shield machine hydraulic system non-disassembly on-machine inspection device of this utility model.

[0025] In the picture:

[0026] 1. Hydraulic pump;

[0027] 2. Overflow valve;

[0028] 3. Reversing valve;

[0029] 4. Detection module;

[0030] 5. Integrated circuit board;

[0031] 6. Hydraulic accumulator;

[0032] 7. Speed ​​control valve;

[0033] 8. Walking mechanism; 81. Handle; 82. Wheels;

[0034] 9. Hydraulic equipment to be tested. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0036] In the description of this utility model, it should be noted that if terms such as "upper", "lower", "inner", "back" or indicating orientation or positional relationship appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0038] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0039] Please refer to the following: Figs. 1-2The present invention will now describe the in-machine testing device for the hydraulic system of a tunnel boring machine that does not require disassembly. This testing device aims to solve the technical problem of inaccurate test values ​​caused by the need to disassemble and transport existing hydraulic systems back to the testing room, as well as the problem of huge losses due to the overall shutdown of the tunnel boring machine, by designing an on-site testing device for the hydraulic system without disassembling the hydraulic equipment and keeping it in its original state. Based on the above design concept, this on-site testing device for the tunnel boring machine hydraulic system without disassembly includes a hydraulic pump 1, an overflow valve 2, a reversing valve 3, and a testing module 4. The pressure output end of the hydraulic pump 1 is connected to the hydraulic chamber of the hydraulic equipment 9 to be tested; the overflow valve 2 is connected to the oil circuit connecting the hydraulic pump 1 and the equipment to be tested; the reversing valve 3 is connected between the hydraulic pump 1 and the hydraulic equipment 9 to be tested and is used to switch the power output path of the hydraulic pump 1 between the two hydraulic chambers on both sides of the piston of the hydraulic equipment 9 to be tested; the testing module 4 includes a pressure sensor, a temperature sensor, and a vibration sensor. The vibration sensor and the temperature sensor are both located on the outer periphery of the hydraulic equipment 9 to be tested, and the pressure sensor is located in the pipeline connecting the hydraulic pump 1 and the hydraulic chamber of the hydraulic equipment 9 to be tested.

[0040] In the specific implementation process of the above embodiments, the hydraulic pump 1 directly provides controllable pressure to the hydraulic chamber of the hydraulic equipment 9 to be tested. The overflow valve 2 limits the maximum system pressure to ensure safety. The reversing valve 3 flexibly switches the power output of the hydraulic pump 1 to different chambers on both sides of the piston. In conjunction with the vibration sensor and temperature sensor arranged around the equipment, the mechanical vibration state and temperature rise of the equipment during operation are sensed in real time. The pressure sensor set on the connecting pipeline accurately measures the working pressure of the hydraulic system. Thus, this utility model can perform in-situ, real-time, and comprehensive detection and monitoring of the key operating parameters (pressure, temperature, vibration) of the equipment without disassembling the hydraulic equipment and maintaining its original installation state and working environment. It achieves the technical effect of comprehensively evaluating the sealing performance, wear state, smooth operation, and system efficiency of the hydraulic equipment. This effectively solves the technical problem in the prior art that the testing environment, installation state, and dynamic characteristics are changed due to the need to disassemble the equipment and transport it back to the laboratory for testing, resulting in inaccurate test results. In addition, since this utility model can test the hydraulic system of the tunnel boring machine without stopping the entire machine, it greatly reduces the direct and indirect losses caused by the machine shutdown.

[0041] Based on the above embodiments, a feasible implementation method is proposed. The shield machine hydraulic system non-disassembly on-machine testing device also includes an integrated plate 5. Hydraulic pipelines are opened in the integrated plate 5. The hydraulic pump 1, overflow valve 2, reversing valve 3, and pressure sensor are all located in the integrated plate 5. With this arrangement, this embodiment realizes the modular and compact layout of the core hydraulic components and key sensors of the testing device. The pre-set oil circuit in the integrated plate 5 replaces the complex field pipeline connections, significantly reducing the number of exposed joints. Combined with the integrated installation method, it effectively reduces the risk of leakage caused by loose pipeline connections or poor joint sealing during the testing process, and improves the reliability and sealing of the testing device. At the same time, the modular design greatly simplifies the on-site installation and disassembly process, shortens the testing preparation time, improves the testing efficiency, and makes the entire testing device easier to carry, move, and operate, further strengthening the advantages of non-disassembly, on-machine, and rapid testing, which is conducive to solving the problems of low on-site testing efficiency and poor reliability.

[0042] In one feasible implementation, the on-machine testing device for the shield machine hydraulic system without disassembly also includes a hydraulic accumulator 6. The hydraulic accumulator 6 is located in the pipeline connecting the hydraulic pump 1 and the hydraulic chamber of the hydraulic equipment 9 to be tested. In this embodiment, the setting of the hydraulic accumulator 6 realizes the absorption of system pressure fluctuations and energy storage. The accumulator can effectively absorb the pressure pulsation output by the hydraulic pump 1 and the hydraulic shock generated by the operation of the equipment under test (especially when reversing or the load changes suddenly). In conjunction with the pressure sensor, the system pressure reading is more stable and accurate, reducing the interference of pressure fluctuations on the test results (especially pressure holding test and leakage test). At the same time, the accumulator can provide or absorb additional flow in a short time, which helps to stabilize the system pressure. Especially when the test requires pressure holding, it can reduce the frequent start-stop or loading of the hydraulic pump 1, improve the stability and accuracy of the test, and help solve the technical problem of dynamic pressure fluctuations affecting the accuracy and stability of the test.

[0043] In addition to the feasible implementation methods described above, the on-machine testing device for the shield machine hydraulic system without disassembly also includes a speed regulating valve 7, which is located on the integrated plate 5 and used to adjust the stroke speed of the hydraulic pump 1. This allows for precise adjustment of the output flow of the hydraulic pump 1 (controlling the movement speed of the hydraulic cylinder piston). Operators can conveniently and quickly adjust the opening of the speed regulating valve 7 according to different testing needs (such as testing pressure characteristics and vibration characteristics at different speeds or conducting slow-speed pressure holding leakage tests), thereby controlling the extension / retraction speed of the piston of the hydraulic equipment 9 under test. This controllable speed adjustment capability enables the testing device to simulate different working conditions of the hydraulic equipment in actual operation, obtain more comprehensive and representative performance data, improve the flexibility and applicability of the testing, and help solve the technical problem that a single speed test cannot fully reflect the actual working performance of the equipment.

[0044] In some feasible implementations, the shield machine hydraulic system non-disassembly on-machine inspection device also includes a traveling mechanism 8. The traveling mechanism 8 includes a bottom plate, a handle 81, and traveling wheels 82. The handle 81 is located on the top of the integrated plate 5, the bottom plate is located at the bottom of the integrated plate 5 and is perpendicular to the integrated plate 5, and the traveling wheels 82 are located on the lower surface of the bottom plate to facilitate the convenient movement of the entire inspection device. By gripping the top handle 81, the operator can easily push or pull the entire device and move it flexibly inside the shield machine or on the ground of the maintenance workshop using the bottom traveling wheels 82. This design significantly reduces the labor intensity of moving the integrated plate 5 and the heavy components (such as the hydraulic pump 1) installed on it, improves the mobility and on-site applicability of the inspection device, and enables the inspection personnel to quickly deploy the device to the hydraulic equipment 9 to be inspected at different locations on the shield machine, greatly improving the efficiency of on-site inspection operations and helping to solve the technical problems of bulky inspection devices, difficult on-site movement, and low deployment efficiency. Furthermore, the traveling wheel 82 includes a wheel body and a mounting shaft. The mounting shaft is located on the lower surface of the base plate and extends in the vertical direction. The wheel body is rotatably connected to the mounting shaft, and the wheel body has the freedom to rotate around its own axis and around the axis of the mounting shaft. The axis of the wheel body itself is perpendicular to the axis of the mounting shaft. In this embodiment, the traveling wheel 82 is set as a universal wheel, which is beneficial for changing the direction of the entire detection device and facilitates the movement and turning of the entire detection device in a narrow area.

[0045] In some feasible embodiments, the traveling wheel 82 also includes a locking bolt. The locking bolt rotates synchronously with the traveling wheel 82 around the mounting axis, and as the locking bolt rotates, it abuts against the wheel surface of the traveling wheel 82. When the detection device is moved into position for detection, the operator only needs to rotate the locking bolt to tighten it, which effectively prevents the traveling wheel 82 from rolling, thus achieving reliable fixation of the device in the detection position and preventing accidental movement. This locking method is simple and quick to operate (no additional tools required) and provides a secure lock, significantly improving the stability and safety during the detection process and avoiding the risks of pipe pulling, sensor displacement, or personnel tripping due to device slippage.

[0046] Based on the same inventive concept, this utility model also proposes a non-disassembly-free testing system, which includes the non-disassembly-free on-machine testing device for the shield machine hydraulic system mentioned above.

[0047] Compared to existing technologies, this invention can be quickly deployed to the tunnel boring machine (TBM) site during implementation. It enables in-situ, comprehensive performance testing and condition assessment of key hydraulic actuators (such as propulsion cylinders, articulation cylinders, and segment assembly machine cylinders) without disassembling any of the hydraulic equipment being tested, thus preserving their true working condition to the greatest extent possible and obtaining extremely accurate test data. This system significantly improves the efficiency, accuracy, and convenience of TBM hydraulic system testing, greatly reduces downtime for disassembly, lowers maintenance costs and operational risks, and fundamentally solves the core technical problems of traditional testing methods, such as test distortion, low efficiency, and high costs due to disassembly and transportation, as well as the huge losses caused by overall TBM downtime. It provides a powerful and efficient tool for condition monitoring, preventive maintenance, and fault diagnosis of TBM hydraulic systems.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 non-disassembly-based on-machine testing device for the hydraulic system of a tunnel boring machine, characterized in that, include: A hydraulic pump, wherein the pressure output end of the hydraulic pump is connected to the hydraulic chamber of the hydraulic equipment to be tested; The relief valve is connected in the oil circuit between the hydraulic pump and the equipment to be tested. A reversing valve is connected between the hydraulic pump and the hydraulic device under test, and is used to switch the power output path of the hydraulic pump between two hydraulic chambers on both sides of the piston of the hydraulic device under test. The detection module includes a pressure sensor, a temperature sensor, and a vibration sensor. The vibration sensor and the temperature sensor are both located on the outer periphery of the hydraulic equipment to be tested, and the pressure sensor is located in the pipeline connecting the hydraulic pump and the hydraulic chamber of the hydraulic equipment to be tested.

2. The shield machine hydraulic system non-disassembly on-machine testing device as described in claim 1, characterized in that, The shield machine hydraulic system non-disassembly on-machine testing device also includes an integrated plate, in which hydraulic pipelines are opened. The hydraulic pump, the overflow valve, the reversing valve and the pressure sensor are all located on the integrated plate.

3. The shield machine hydraulic system non-disassembly on-machine testing device as described in claim 2, characterized in that, The shield machine hydraulic system non-disassembly on-machine testing device also includes a hydraulic accumulator, which is located in the pipeline connecting the hydraulic pump and the hydraulic chamber of the hydraulic equipment to be tested.

4. The shield machine hydraulic system non-disassembly on-machine testing device as described in claim 2, characterized in that, The shield machine hydraulic system non-disassembly on-machine testing device also includes a speed control valve, which is located on the integrated plate and is used to adjust the stroke speed of the hydraulic pump.

5. The shield machine hydraulic system non-disassembly in-machine testing device as described in claim 2, characterized in that, The shield machine hydraulic system non-disassembly on-machine inspection device also includes a traveling mechanism, which includes a bottom plate, a handle and traveling wheels. The handle is located on the top of the integrated plate, the bottom plate is located at the bottom of the integrated plate and is perpendicular to the integrated plate, and the traveling wheels are located on the lower surface of the bottom plate.

6. The shield machine hydraulic system non-disassembly in-machine testing device as described in claim 5, characterized in that, The walking wheel includes a wheel body and a mounting shaft. The mounting shaft is located on the lower surface of the base plate and extends in the vertical direction. The wheel body is rotatably connected to the mounting shaft, and the wheel body has the freedom to rotate around its own axis and around the axis of the mounting shaft. The axis of the wheel body itself is perpendicular to the axis of the mounting shaft.

7. The shield machine hydraulic system non-disassembly on-machine testing device as described in claim 6, characterized in that, The traveling wheel also includes a locking bolt, which rotates synchronously with the traveling wheel around the mounting shaft, and as the locking bolt rotates, the locking bolt abuts against the wheel surface of the traveling wheel.

8. A non-disassembly-free testing system, characterized in that, Includes a non-disassembly on-machine inspection device for the hydraulic system of a tunnel boring machine as described in any one of claims 1 to 7.

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