Shield tunneling grease consumption height measurement device

Abstract

This application discloses a shield tunneling grease consumption height measurement device, aiming to solve the technical problems of poor timeliness, susceptibility to environmental interference, and low calculation accuracy in traditional shield tunneling grease consumption height measurement. The device includes a measurement module for measuring the displacement of a hydraulic rod fixed parallel to one side of a grease pump, and a display module electrically connected to the measurement module for displaying the data measured by the measurement module. The measurement module includes a first fixing member fixed to one end of the hydraulic rod, a pull-wire sensor vertically fixed to the first fixing member, and a second fixing member fixed to the other end of the hydraulic rod. By using a pull-wire sensor, manual measurement is avoided, achieving high-precision and high-reliability measurement. The use of the RS485 interface standard for data transmission enables real-time monitoring of grease consumption, thereby achieving real-time control of grease consumption and preventing excessive or insufficient grease consumption.

Description

Technical Field

[0001] This application relates to the field of tunnel boring machine construction technology, specifically to a device for measuring the height of grease consumption in tunnel boring machines. Background Technology

[0002] During tunnel boring machine (TBM) excavation, continuously injecting sufficient specialized sealing grease into the tail shield sealing system via a TBM grease pump is a core element in ensuring construction safety. The grease's main function is to form a dense sealing barrier between the tail brush wires and between the tail brush and the tunnel lining segments, effectively isolating external water and soil pressure and preventing groundwater, silt, and other contaminants from intruding into the TBM. Simultaneously, the grease lubricates the contact surfaces between the tail brush and the tunnel lining segments, reducing friction and wear, and ensuring stable TBM advancement and equipment safety under complex geological conditions. The TBM grease pump consists of a support frame formed by parallel hydraulic cylinders on both sides connected to a top crossbeam and a bottom base. The pump body in the middle drives a plunger in a reciprocating motion to deliver the grease.

[0003] Currently, monitoring grease consumption generally relies on manual measurement. Operators need to periodically measure the extension and retraction stroke of the hydraulic cylinders using tools such as rulers, and then manually calculate the consumption based on the tank dimensions. This method suffers from poor timeliness, susceptibility to environmental interference, and low calculation accuracy. It is difficult to adapt to changes in grease consumption rates during tunneling, which directly leads to inaccurate grease supply control. Insufficient supply will severely weaken the sealing barrier, causing major safety risks such as leakage, water inrush, and even machine flooding; excessive supply will result in unnecessary waste of resources.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] In view of at least one of the above technical problems, this disclosure provides a shield grease consumption height measuring device, which mainly solves the technical problems of poor timeliness, low accuracy and susceptibility to environmental interference in traditional shield grease consumption height measurement.

[0006] According to one aspect of this disclosure, a shield tunneling grease consumption height measuring device is provided, comprising a measuring module fixed parallel to one side of a hydraulic rod of a grease pump and used to measure the displacement of the hydraulic rod, and a display module electrically connected to the measuring module and used to display the data measured by the measuring module; the measuring module includes a first fixing member fixed to the piston end of the hydraulic rod, a second fixing member fixed to the cylinder of the hydraulic rod, and a pull wire sensor correspondingly connected between the first fixing member and the second fixing member.

[0007] In some embodiments of this disclosure, the first fastener includes a C-shaped fixing plate fastened to the top crossbeam of the grease pump, a mating straight plate fixed to the opening of the C-shaped fixing plate, and two bow-shaped elastic buckles laterally fixed to the inner side of the front end of the C-shaped fixing plate; the two parallel sides of the C-shaped fixing plate are slightly shorter than the side length of the crossbeam.

[0008] In some embodiments of this disclosure, the first fastener includes a clamp that fastens to the top of the hydraulic rod of the grease pump and a connecting plate fixed to the clamp for connecting the pull-wire sensor.

[0009] In some embodiments of this disclosure, the end of the wire of the pull-wire sensor is provided with a connecting loop.

[0010] In some embodiments of this disclosure, the second fastener is fixed to the top of the hydraulic cylinder of the grease pump and includes two semi-circular buckles hinged by a rotating shaft and a connecting shaft for connecting the two ends of the two semi-circular buckles and hinged to the connecting ring.

[0011] In some embodiments of this disclosure, both the measurement module and the display module are provided with an RS485 interface for transmitting data.

[0012] One or more technical solutions provided in the embodiments of this application have at least one of the following technical effects or advantages: 1. By using a pull-wire sensor, the problems of low measurement accuracy and susceptibility of measured data to environmental factors in existing technologies are effectively solved, thereby achieving high-precision and high-reliability measurement.

[0013] 2. Using the RS485 interface standard to transmit data effectively solves the problem of low data timeliness in traditional measurement methods, thereby realizing real-time monitoring of oil consumption and achieving real-time control of oil consumption to avoid excessive or insufficient oil consumption. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the shield grease consumption height measuring device in one embodiment of this application.

[0015] Figure 2 This is a schematic diagram of the measurement module of the shield grease consumption height measurement device in one embodiment of this application.

[0016] Figure 3 This is a schematic diagram of the first fixing component of the shield grease consumption height measuring device in one embodiment of this application.

[0017] Figure 4 This is a top view schematic diagram of the connection between the first fixing member and the guy wire sensor of the shield grease consumption height measuring device in one embodiment of this application.

[0018] Figure 5 This is a schematic diagram of the second fixing component of the shield grease consumption height measuring device in one embodiment of this application.

[0019] Figure 6 This is a schematic diagram of the detection process of the shield grease consumption height measuring device in one embodiment of this application.

[0020] Figure 7 This is a schematic diagram of the overall structure of the shield grease consumption height measuring device in another embodiment of this application.

[0021] Figure 8 This is a schematic diagram of the measurement module of the shield grease consumption height measurement device in another embodiment of this application.

[0022] Figure 9 This is a schematic diagram of the first fixing component of the shield grease consumption height measuring device in another embodiment of this application.

[0023] Figure 10 This is a schematic diagram of the detection process of the shield grease consumption height measuring device in another embodiment of this application.

[0024] In the above figures, 1 is the grease pump, 2 is the measuring module, 21 is the first fixing component, 211 is the C-shaped fixing plate, 212 is the mating straight plate, 213 is the bow-shaped elastic buckle, 214 is the main body clamp, 215 is the connecting plate, 22 is the pull wire sensor, 221 is the pull wire sensor body, 222 is the wire, 223 is the connecting ring, 23 is the second fixing component, 231 is the semi-circular metal piece, 232 is the rotating shaft, 233 is the connecting shaft, and 3 is the display module. Detailed Implementation

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are 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. The terms "first," "second," etc., used in this application are used to distinguish the described objects and do not have any sequential or technical meaning. And the terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages).

[0026] Unless otherwise specified, the unit modules (components, structures, mechanisms) or sensors involved in the following embodiments are all conventional commercially available products.

[0027] This embodiment provides a shield tunnel grease consumption height measurement device. By setting up a wire sensor, it achieves high-precision and high-reliability measurement. By using the RS485 interface standard to transmit data, it realizes real-time monitoring of grease consumption, thereby achieving real-time control of grease consumption and avoiding excessive or insufficient grease consumption.

[0028] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0029] This example discloses a device for measuring the height of grease consumption in tunnel boring machines. (See also...) Figure 1 It includes a measuring module 2 mounted on the top beam of the grease pump 1 and a display module 3 electrically connected to the measuring module.

[0030] See Figure 2 The main body of the pull-wire sensor 22 in the measurement module 2 is vertically connected to the crossbeam at the top of the grease pump 1 via the first fixing member 21. The end of the wire of the pull-wire sensor 22 is fixed to the upper part of the hydraulic cylinder of the grease pump 1 via the second fixing member 23, ensuring that the direction of the wire is the same as the direction of movement of the hydraulic rod. The pull-wire sensor 22 includes a pull-wire sensor body 221 and a wire 222, with a connecting ring 223 crimped to the end of the wire 222. This solution overcomes the signal interference caused by dust and grease contamination in the tunnel environment of the laser ranging device by using the pull-wire sensor 22. The shortened length of its extended wire is the descent height of the grease, and the measured data is accurate and reliable.

[0031] like Figure 3 As shown, the first fixing member 21 includes a C-shaped fixing plate 211 fastened to the top crossbeam of the grease pump 1, a mating straight plate 212 located on the other side of the crossbeam and bolted to the C-shaped fixing plate 211, and an arch-shaped elastic buckle 213 welded to the inner side of the front end of the C-shaped fixing plate 211. It is worth noting that the upper and lower sides of the C-shaped fixing plate 211 are narrower than the side length of the crossbeam. Figure 4As shown, the inner front end of the C-shaped fixing plate 211 is welded to the middle of the bow-shaped elastic buckle 213. The length of the upper and lower ends of the C-shaped fixing plate 211 is slightly shorter than the side length of the crossbeam. Therefore, when the bolts connecting the C-shaped fixing plate 211 and the mating straight plate 212 are tightened, the C-shaped fixing plate 211 moves towards the crossbeam, causing the bow-shaped elastic buckle 213 to move towards the crossbeam. After the two ends of the bow-shaped elastic buckle 213 contact the crossbeam, the bolts are still tightened. At this time, the bow-shaped elastic buckle 213 deforms due to the pressure from the C-shaped fixing plate 211, and its middle part bends towards the crossbeam, causing its two ends to bend inward due to the elasticity of the metal, thereby engaging the pull-wire sensor 22, which has two corresponding grooves on the left and right sides of the bow-shaped elastic buckle 213. This kind of elastic fastener relies on its own rigidity to make the clamping force stable and reliable, and its unique structure and installation method can make the installation of the device more convenient.

[0032] like Figure 5 As shown, the second fixing member 23 is an annular buckle composed of two semi-circular metal pieces 231. One end of the two semi-circular metal pieces 231 is hinged together by a rotating shaft 232, and the other end is connected together by a connecting shaft 233. Tightening the connecting shaft 233 provides inward pressure, making the second fixing member 23 firmly fixed to the hydraulic cylinder of the grease pump 1. The connecting shaft 233 is hinged to the connecting ring 223 of the pull-wire sensor 22, so that the wire 222 of the pull-wire sensor 22 always extends and retracts in the direction of the hydraulic cylinder, thereby making the measurement data more accurate.

[0033] like Figure 1 As shown, the pull-wire sensor 22 is wired to the display module 3 via an RS485 interface. The RS-485 interface standard utilizes differential signals and a bus structure, enabling reliable data transmission over long distances, with high anti-interference capabilities, and between multiple devices in complex environments such as industrial settings. The display module 3 is a data processing-enabled display used to show the data measured by the measurement module. Located in the main unit room, it clearly displays the measurement data from the measurement module, making the data presentation more intuitive.

[0034] During use, after fixing the device, the extreme values ​​of the stroke of the cable sensor 22 are determined by adjusting the hydraulic cylinder of the grease pump 1 to its highest and lowest heights, facilitating the calculation of grease consumption levels. This also determines the AH (high alarm value) and AL (low alarm value) values ​​in the display module 3, ensuring the safe operation of the grease pump 1. Figure 6 As shown, during the tunnel boring machine's excavation process, monitoring personnel observe the grease consumption height L in real time through a monitor located in the main unit room, thereby calculating the consumption amount (△L=L1-L2) in real time and adjusting the amount in a timely manner. When the consumption is too high, the downward pressure speed of the grease pump is slowed down, and when the consumption is too low, the downward pressure speed of the grease pump is accelerated. Example

[0035] This example discloses a device for measuring the height of grease consumption in tunnel boring machines. (See also...) Figure 7 It includes a measuring module 2 mounted on the hydraulic rod at the top of the grease pump 1, and a display module 3 electrically connected to the measuring module.

[0036] See Figure 8 In the measurement module 2, the main body of the pull-wire sensor 22 is vertically connected to the hydraulic rod at the top of the grease pump 1 via a first fixing member 21. The end of the wire 222 of the pull-wire sensor 22 is fixed to the upper part of the hydraulic cylinder of the grease pump 1 via a second fixing member 23, ensuring that the direction of the wire is the same as the direction of movement of the hydraulic rod. The pull-wire sensor 22 includes a pull-wire sensor body 221 and a wire 222, with a connecting ring 223 crimped to the end of the wire 222. This solution overcomes the signal interference caused by dust and grease contamination in the tunnel environment of the laser ranging device by using the pull-wire sensor 22. The shortened length of its extended wire is the descent height of the grease, and the measured data is accurate and reliable.

[0037] like Figure 9 As shown, the first fixing member 21 includes a clamp 214 that fastens to the hydraulic rod at the top of the grease pump 1, and a connecting plate 215 that is fixed to the clamp 214 by bolts. The pull-wire sensor body 221 is fixed to the front end of the connecting plate 215 by bolts. This bolt-based fixing member is stable and reliable.

[0038] like Figure 5 As shown, the second fixing member 23 is an annular buckle composed of two semi-circular metal pieces 231. One end of the two semi-circular metal pieces 231 is hinged together by a rotating shaft 232, and the other end is connected together by a connecting shaft 233. Tightening the connecting shaft 233 provides inward pressure, making the second fixing member 23 firmly fixed to the hydraulic cylinder of the grease pump 1. The connecting shaft 233 is hinged to the connecting ring 223 of the pull-wire sensor 22, so that the wire 222 of the pull-wire sensor 22 always extends and retracts in the direction of the hydraulic cylinder, thereby making the measurement data more accurate.

[0039] like Figure 7 As shown, the pull-wire sensor 22 is wired to the display module 3 via an RS485 interface. The RS-485 interface standard utilizes differential signals and a bus structure, enabling reliable data transmission over long distances, with high anti-interference capabilities, and between multiple devices in complex environments such as industrial settings. The display module 3 is a data processing-enabled display used to show the data measured by the measurement module. Located in the main unit room, it clearly displays the measurement data from the measurement module, making the data presentation more intuitive.

[0040] During use, after fixing the device, the extreme values ​​of the stroke of the cable sensor 22 are determined by adjusting the hydraulic cylinder of the grease pump 1 to its highest and lowest heights, facilitating the calculation of grease consumption levels. This also determines the AH (high alarm value) and AL (low alarm value) values ​​in the display module 3, ensuring the safe operation of the grease pump 1. Figure 10 As shown, during the tunnel boring machine's excavation process, monitoring personnel observe the grease consumption height L in real time through a monitor located in the main unit room, thereby calculating the consumption amount (△L=L1-L2) in real time and adjusting the amount in a timely manner. When the consumption is too high, the downward pressure speed of the grease pump is slowed down, and when the consumption is too low, the downward pressure speed of the grease pump is accelerated.

[0041] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0042] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of its inventive concept. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A device for measuring the height of grease consumption in tunnel boring machines, characterized in that, The device includes a measuring module that is fixed parallel to one side of the hydraulic rod of the grease pump and is used to measure the displacement of the hydraulic rod, and a display module that is electrically connected to the measuring module and is used to display the data measured by the measuring module. The measuring module includes a first fixing member fixed to the piston end of the hydraulic rod, a second fixing member fixed to the cylinder of the hydraulic rod, and a pull wire sensor correspondingly connected between the first fixing member and the second fixing member.

2. The shield tunneling grease consumption height measuring device according to claim 1, characterized in that, The first fastener includes a C-shaped fixing plate that fastens to the top crossbeam of the grease pump, a matching straight plate fixed to the opening of the C-shaped fixing plate, and two bow-shaped elastic buckles that are laterally fixed to the inner side of the front end of the C-shaped fixing plate; the two parallel sides of the C-shaped fixing plate are slightly shorter than the side length of the crossbeam.

3. The shield tunneling grease consumption height measuring device according to claim 1, characterized in that, The first fixing component includes a clamp that fastens to the top of the hydraulic rod of the grease pump and a connecting plate fixed to the clamp for connecting the pull wire sensor.

4. The shield tunneling grease consumption height measuring device according to claim 1, characterized in that, The end of the wire in the pull-wire sensor is provided with a connecting loop.

5. The shield tunneling grease consumption height measuring device according to claim 4, characterized in that, The second fixing member is fixed to the top of the hydraulic cylinder of the grease pump, and includes two semi-circular buckles hinged by a rotating shaft, and a connecting shaft for connecting the two ends of the two semi-circular buckles and hinged to the connecting ring.

6. The shield tunneling grease consumption height measuring device according to claim 1, characterized in that, Both the measurement module and the display module are equipped with an RS485 interface for data transmission.

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