CN216348353U - Resistance type shield/TBM shield tail clearance real-time measuring device - Google Patents
Resistance type shield/TBM shield tail clearance real-time measuring device Download PDFInfo
- Publication number
- CN216348353U CN216348353U CN202122865228.5U CN202122865228U CN216348353U CN 216348353 U CN216348353 U CN 216348353U CN 202122865228 U CN202122865228 U CN 202122865228U CN 216348353 U CN216348353 U CN 216348353U
- Authority
- CN
- China
- Prior art keywords
- shield
- shield tail
- strain gauge
- manganese steel
- resistance strain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a real-time measuring device for a gap between a resistance type shield/TBM shield tail, which comprises a manganese steel elastic sheet and a resistance strain gauge arranged on the manganese steel elastic sheet, wherein the manganese steel elastic sheet comprises a bottom plate fixedly connected with the inner wall of the shield tail and an inclined elastic plate with one end fixedly connected with the bottom plate; the other end of the elastic plate is freely arranged and is connected with the outer wall of the duct piece in a sliding contact manner; the resistance strain gauge is arranged at the free end of the elastic plate; and the resistance strain gauge is connected with an upper computer through an RS485 communication module. The shield tail clearance real-time monitoring device is simple in structure, strong in adaptability to severe environments, capable of being applied to complex construction environments such as oil stains, humidity, dust and slurry, high in continuous measurement precision and capable of achieving real-time accurate monitoring of shield tail clearances.
Description
Technical Field
The utility model relates to the technical field of shield tunneling machines and TBMs (tunnel boring machines), in particular to a real-time measuring device for a shield tail clearance of a resistance type shield/TBM (tunnel boring machine).
Background
The shield tail clearance is a clearance between the inner wall of the shield tail part of the shield/TBM shield and the outer wall of the segment. In the shield construction process, as the shield/TBM tunneling posture is changed constantly, the extending lengths of all groups of thrust cylinders cannot be kept consistent constantly, and the stroke difference exists, the shield tail clearance is changed constantly. When the shield tail clearance exceeds the design allowable range, the shield of the shield/TBM and the segment generate friction, the segment is broken, the propelling resistance of the shield/TBM is increased, and the tunneling speed is reduced; the sealing effect of the shield tail brush can be directly reduced, and even a shield tail sealing system is damaged, so that cement paste leaks outwards; in severe cases, duct piece dislocation, tunnel leakage, ground collapse, etc. may even occur. Therefore, the shield tail clearance must be measured in real time during shield/TBM construction, and the tunneling attitude is continuously adjusted after combining data such as stroke difference of a propulsion oil cylinder, so as to ensure the smooth construction of the shield/TBM.
At present, in the shield/TBM construction process in China, the commonly used shield tail clearance measurement method mainly comprises manual measurement and non-contact measurement. The measurement point position of each time of the manual measurement method cannot be kept fixed, the continuity of shield tail gap data is poor, the technical level and the measurement mode of a measurer are different, the measurement precision is relatively low, and relatively complex construction environment can cause great potential safety hazard to the measurer. For a non-contact measurement method, various technologies such as laser vision and ultrasonic waves exist, but the non-contact measurement method has high requirements on the surrounding environment, the shield/TBM construction environment is relatively complex, the non-contact measurement method has frequent faults due to factors such as oil stains, mud, dust and humidity, the measurement data continuity is poor, and the maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a real-time measurement apparatus for a gap between a resistive shield and a TBM shield, which has high measurement accuracy, low measurement accuracy, and strong adaptability to the environment, in view of the defects of the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a real-time measuring device for a shield tail clearance of a resistance type shield/TBM (tunnel boring machine) comprises a manganese steel elastic sheet and a resistance strain gauge arranged on the manganese steel elastic sheet, wherein the manganese steel elastic sheet comprises a bottom plate fixedly connected with the inner wall of the tail of a shield and an inclined elastic plate with one end fixedly connected with the bottom plate; the other end of the elastic plate is freely arranged and is connected with the outer wall of the duct piece in a sliding contact manner; the resistance strain gauge is arranged at the free end of the elastic plate; and the resistance strain gauge is connected with an upper computer through an RS485 communication module.
Aiming at the technical scheme, the manganese steel elastic sheet has strong elasticity, so that the free end of the manganese steel elastic sheet can be always in contact with the outer wall of the duct piece, when the gap between the shield tails becomes small, the manganese steel elastic sheet is extruded, the free end of the elastic sheet can be bent and deformed, and when the gap between the shield tails becomes large, the external force is released, and the manganese steel elastic sheet can automatically recover to the original position; the resistance strain gauge deforms along with the free end of the elastic sheet, deformation data are output to an upper computer through an RS485 communication module, and the upper computer analyzes the deformation data to obtain a change value of the shield tail clearance; the elastic plate tilting type arrangement is favorable for more accurate deformation data measurement.
Preferably, the free end of the elastic plate is tightly attached to the outer wall of the duct piece under the action of elasticity of the elastic plate, and is obliquely arranged along the reverse direction of shield/TBM tunneling.
The utility model has the beneficial effects that:
when the shield tail gap changes, the duct piece extrudes or releases the free end of the manganese steel elastic sheet, the manganese steel elastic sheet is bent or restored to the original position under the action of the elasticity of the manganese steel elastic sheet, the resistance strain gauge is driven to synchronously deform, the strain value of the manganese steel elastic sheet is detected by the resistance strain gauge, and the real-time data of the shield tail gap is obtained by the upper computer according to the strain value.
The utility model adopts a resistance-type measuring mode to measure the shield tail clearance value, thereby avoiding the problems of low efficiency, large error, discontinuous numerical value and unfixed point position of a manual measuring mode and also avoiding the problem of poor environmental adaptability of a non-contact measuring mode.
The shield tail clearance real-time monitoring device is simple in structure, strong in adaptability to severe environments, capable of being applied to complex construction environments such as oil stains, humidity, dust and slurry, high in continuous measurement precision and capable of achieving real-time accurate monitoring of shield tail clearances.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1 section of jurisdiction, 2 shield afterbody, 3 bottom plates, 4 resistance strain gauges, 5 RS485 communication module, 6 host computers, 7 elastic plates.
Detailed Description
The utility model is further described below with reference to the figures and examples.
Example 1
As shown in fig. 1, a real-time measurement device for a gap between a resistance shield and a TBM shield tail comprises a manganese steel spring plate and a resistance strain gauge 4 arranged on the manganese steel spring plate, wherein the manganese steel spring plate comprises a bottom plate 3 fixedly connected with the inner wall of a shield tail 2 and an inclined elastic plate 7 with one end fixedly connected with the bottom plate 3; the other end of the elastic plate 7 is obliquely and freely arranged along the reverse direction of the shield/TBM tunneling and is connected with the outer wall of the duct piece 1 in a sliding contact manner; the resistance strain 4 sheet is arranged at the free end of the elastic plate 7; the resistance strain gauge 4 is connected with the upper computer 6 through the RS485 communication module 5.
Manganese steel shell fragment self has very strong elasticity, and the manganese steel shell fragment can be extruded when shield tail clearance diminishes, and the free end bending deformation of elastic plate 7, when shield tail clearance grow, external force release between shield tail inner wall and the section of jurisdiction outer wall, the manganese steel shell fragment restores to the normal position by oneself, guarantees that the free end of flexure strip 7 keeps in contact with the outer wall of section of jurisdiction 1 all the time. The resistance strain gauge 4 synchronously deforms along with the free end of the elastic sheet, and the strain value of the elastic sheet is detected in real time. The strain value signals detected by the resistance strain gauge 4 are transmitted to the upper computer 6 through the RS485 communication module 5, and the corresponding shield tail clearance values are obtained through conversion and then displayed on the upper computer 6.
The measuring method of the measuring device comprises the following steps:
(1) a plurality of measuring devices are uniformly distributed at the shield tail gap of the shield/TBM along the circumference, and the measuring devices are positioned on the same cross section of the inner wall of the shield tail part 2;
(2) fixing a bottom plate 3 on the inner wall of the shield tail part 2, wherein the free end of an elastic plate 7 is tightly attached to the outer wall of the duct piece 1 under the action of the elasticity of the elastic plate and is obliquely arranged along the reverse direction of shield/TBM tunneling;
(3) fixing the resistance strain gauge 4 at the free end of the elastic plate 7, so that the resistance strain gauge 4 synchronously deforms along with the elastic plate 7 of the manganese steel elastic sheet, and the resistance strain gauge 4 monitors the strain value of the elastic plate 7 in real time;
(4) the resistance strain gauge 4 transmits the detected data to the upper computer 6 through the RS485 communication module 5, and the upper computer processes the received data to obtain a corresponding shield tail gap value.
During initial installation, the manganese steel elastic sheet and the resistance strain gauge 4 are installed, an initial strain value detected by the resistance strain gauge 4 is recorded, and initial value setting is carried out in the upper computer 6; the resistance strain gauge 4 can synchronously generate deformation along with the free end of the manganese steel elastic sheet; when the shield tail clearance changes, the segment 1 can extrude or release the free end of the elastic plate 7, the elastic plate 7 bends or recovers the original position under the action of elasticity of the elastic plate 7, the resistance strain gauge 4 is driven to synchronously deform, the resistance strain gauge 4 detects the strain value of the elastic plate 7, and the upper computer 6 obtains the current shield tail clearance value through data processing according to the real-time signal sent by the RS485 communication module 5.
A plurality of shield/TBM shield tail clearance real-time measuring device is evenly installed on the inner wall of the shield tail part 2, all measuring devices are evenly distributed along the circumferential direction, shield tail clearance values of different positions of the shield tail part 2 are respectively measured through the plurality of measuring devices, shield tail clearance data of different positions are analyzed, the accuracy of segment installation can be obtained, and reference basis is provided for segment selection and posture adjustment.
It should be noted that the device structures, ratios, sizes, and the like shown in the drawings are only used for understanding and reading the disclosure, and are not used for limiting the practical limitations of the present invention; any modification of the structure, change of the ratio or adjustment of the size without affecting the function and the purpose of the utility model should be considered as the scope of the present invention without substantially changing the technical content.
The apparatus elements referred to in the above embodiments are conventional apparatus elements unless otherwise specified, and the structural arrangements, operations, or controls referred to in the above embodiments are conventional in the art unless otherwise specified.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (2)
1. A real-time measuring device for a shield tail clearance of a resistance type shield/TBM (tunnel boring machine) is characterized by comprising a manganese steel elastic sheet and a resistance strain gauge arranged on the manganese steel elastic sheet, wherein the manganese steel elastic sheet comprises a bottom plate fixedly connected with the inner wall of the shield tail and an inclined elastic plate with one end fixedly connected with the bottom plate; the other end of the elastic plate is freely arranged and is connected with the outer wall of the duct piece in a sliding contact manner; the resistance strain gauge is arranged at the free end of the elastic plate; and the resistance strain gauge is connected with an upper computer through an RS485 communication module.
2. The device of claim 1, wherein the free end of the elastic plate is tightly attached to the outer wall of the segment under the action of elasticity of the elastic plate and is obliquely arranged along the reverse direction of shield/TBM tunneling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122865228.5U CN216348353U (en) | 2021-11-22 | 2021-11-22 | Resistance type shield/TBM shield tail clearance real-time measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122865228.5U CN216348353U (en) | 2021-11-22 | 2021-11-22 | Resistance type shield/TBM shield tail clearance real-time measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216348353U true CN216348353U (en) | 2022-04-19 |
Family
ID=81151993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122865228.5U Active CN216348353U (en) | 2021-11-22 | 2021-11-22 | Resistance type shield/TBM shield tail clearance real-time measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216348353U (en) |
-
2021
- 2021-11-22 CN CN202122865228.5U patent/CN216348353U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106959248B (en) | Concrete test piece damage crack detection test method | |
| CN203024737U (en) | Deformation monitoring device for large-scale building | |
| CN216385571U (en) | Stay-supported shield/TBM shield tail clearance real-time measuring device | |
| US10882700B1 (en) | Embedded scraper rotation angle detection device for scraper conveyor and detection method | |
| CN204115690U (en) | A kind of hole location automatic detection device being applied to auto parts and components | |
| CN114000887A (en) | Stay wire type shield/TBM shield tail clearance real-time measuring device and measuring method thereof | |
| CN216348353U (en) | Resistance type shield/TBM shield tail clearance real-time measuring device | |
| CN103302112B (en) | The embedded plate profile instrument of whole roller | |
| CN110271813B (en) | Embedded scraper rotation angle detection device and detection method for scraper conveyor | |
| CN114111554A (en) | Real-time measuring device and method for shield tail clearance of resistance type shield/TBM (tunnel boring machine) | |
| CN116125381A (en) | UWB-based fully-mechanized coal mining face coal mining machine position detection method | |
| CN110687396B (en) | Method and system for improving cable fault measurement precision | |
| CN111272125A (en) | System for measuring shield tail clearance and measuring method thereof | |
| CN216348354U (en) | Mechanical shield/TBM shield tail clearance real-time measuring device | |
| CN110823122A (en) | Bending curvature measuring device and method based on fiber bragg grating and elastic body | |
| CN210829398U (en) | Detection system for tunnel grouting depth | |
| CN105251653A (en) | Lever type induction gap measuring mechanism for coating machine | |
| CN220252152U (en) | Test target for deformation radar | |
| CN110939458A (en) | Gas injection system and gas injection method for preventing tunnel segment from floating up due to liquefaction | |
| CN210803409U (en) | Seal membrane anomaly detection device | |
| CN214123121U (en) | Steel structure beam | |
| CN107632551A (en) | A kind of digital quantity measuring method and system based on intelligent checking system | |
| CN211504074U (en) | System for measuring shield tail clearance | |
| CN214407850U (en) | Multifunctional mechanical finger detector | |
| CN114136680B (en) | Laser type shield/TBM grease real-time measurement device and measurement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |