CN111734428B - Over-excavation measuring device - Google Patents
Over-excavation measuring device Download PDFInfo
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- CN111734428B CN111734428B CN202010645317.6A CN202010645317A CN111734428B CN 111734428 B CN111734428 B CN 111734428B CN 202010645317 A CN202010645317 A CN 202010645317A CN 111734428 B CN111734428 B CN 111734428B
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- shield shell
- cutter head
- probe rod
- measuring
- oil cylinder
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- 238000009412 basement excavation Methods 0.000 title abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims description 101
- 239000000523 sample Substances 0.000 claims description 52
- 238000007789 sealing Methods 0.000 claims description 20
- 238000005259 measurement Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 230000005641 tunneling Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 101150038956 cup-4 gene Proteins 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/093—Control of the driving shield, e.g. of the hydraulic advancing cylinders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses an overexcavation measuring device which comprises a radial telescopic mechanism radially arranged in a shield shell or/and a cutter head, wherein the telescopic end of the radial telescopic mechanism is radially and alternately matched with the shield shell or/and the cutter head, the radial telescopic mechanism is connected with a displacement monitoring unit, and the displacement monitoring unit is connected with a control system. And the distance between the excavated soil body and the shield shell or the cutter head can be obtained through the numerical value measured by the displacement monitoring unit. The radial telescopic mechanism is arranged on the shield shell, so that the distance between the shield shell and the excavated soil body can be monitored; the radial telescopic mechanism is arranged on the cutter head, so that the distance between the cutter head and the excavated soil body can be monitored; set up radial telescopic machanism on blade disc or shield shell simultaneously, can realize carrying out the synchronous monitoring to the distance between the shield shell and the soil body after the excavation, the distance between the blade disc and the soil body after the excavation, can form the contrast moreover, be convenient for judge the steadiness of the soil body according to the monitoring data, and then can in time carry out corresponding counter-measure.
Description
Over-excavation measuring device
Technical Field
The invention belongs to the technical field of over excavation of a heading machine, and particularly relates to an over excavation measuring device.
Background
Tunnel boring machines often design super-diggers on cutterheads in order to break the machine and expand the excavation, or to accommodate small curve turns. The super-digging cutter is arranged at the edge of the cutter head, and when the heading machine steers to heading, the super-digging cutter oil cylinder can be operated to enable the super-digging cutter to extend outwards along the radial direction of the cutter head, so that the excavation diameter is enlarged, and the heading machine is easy to steer. Due to the relative rotation of the cutter head, the displacement detection signal of the overexcavation cutter has attenuation of different degrees when passing through the rotary joint, the measurement error is larger, and the rotary joint with the electromagnetic slip ring has high cost and difficult maintenance. Therefore, a flow meter is additionally arranged on the oil inlet pipeline, the extending amount of the oil cylinder is determined by detecting the flow and the through-flow time, and the over-digging amount is further monitored. However, the measurement range of the flowmeter is limited, the accumulated error cannot be eliminated, and the accuracy is greatly influenced.
In order to solve the problems, patent documents with application date of 2011.12.10 and application number of CN201110413407.3 disclose a method and a device for monitoring the displacement of a shield over-cutting cutter. The rod cavity of the super-digging cutter oil cylinder is communicated with the rodless cavity of the detection oil cylinder, the displacements of the two oil cylinders are in a linear relation, and the displacement of the super-digging cutter is obtained by calculating the displacement signal of the detection oil cylinder. Due to the function of the sequence valve, when the super-cutter needs to retract, the detection oil cylinder starts to retract after the super-cutter oil cylinder retracts completely. Therefore, the strokes of the two oil cylinders are zero when the two oil cylinders extend out each time, and accumulated errors caused by internal leakage and the like are eliminated.
However, the method and the device for monitoring the displacement of the super-cutter can only monitor the displacement of the super-cutter, and can only estimate the distance between the soil body on the periphery of the cutter head and the cutter head or the shield body through the displacement of the super-cutter. However, after the area with unstable geology is excavated, the soil body can be converged along with the retraction or forward propulsion of the super-digging cutter. Assuming that the soil body near the cutter head is temporarily stable after being excavated, namely, the method and the device can monitor the distance between the soil body at the cutter head and the cutter head or the shield body during excavation. However, as the heading machine proceeds forwards, the soil may be severely converged after being disturbed, and thus the real-time distance between the over-excavated soil and the shield body as the heading machine proceeds forwards cannot be known. If the real-time distance between the soil body and the shield body is unknown, tunneling or overexcavation is continued without taking countermeasures, and the risk of shield body jamming of the tunneling machine still exists.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides an over-excavation measuring device, which solves the technical problem that the distance between a shield shell and a soil body cannot be monitored after the existing heading machine carries out over-excavation on the soil body.
The technical scheme of the invention is realized as follows: the utility model provides an overexcavation measuring device, includes the radial telescopic machanism of radial setting in shield shell or/and blade disc, radial telescopic machanism's flexible end and shield shell or/and the radial interlude cooperation of blade disc, and radial telescopic machanism is connected with displacement monitoring unit, and displacement monitoring unit links to each other with control system. And the distance between the excavated soil body and the shield shell or the cutter head can be obtained through the numerical value measured by the displacement monitoring unit. The radial telescopic mechanism is arranged on the shield shell, so that the distance between the shield shell and the excavated soil body can be monitored; the radial telescopic mechanism is arranged on the cutter head, so that the distance between the cutter head and the excavated soil body can be monitored; set up radial telescopic machanism on blade disc or shield shell simultaneously, can realize carrying out the synchronous monitoring to the distance between the shield shell and the soil body after the excavation, the distance between the blade disc and the soil body after the excavation, can form the contrast moreover, be convenient for judge the steadiness of the soil body according to the monitoring data, and then can in time carry out corresponding counter-measure.
Furthermore, the radial telescopic mechanism comprises a measuring oil cylinder connected with the shield shell or/and the cutter head, and a telescopic rod of the measuring oil cylinder is the telescopic end. The main action mechanism that sets up the measurement hydro-cylinder as radial telescopic machanism, occupation space is little not only, and control is convenient moreover, the response is fast, and the telescopic link of hydro-cylinder has certain structural strength simultaneously, can adapt to the environment outside the shield shell or the blade disc.
Furthermore, the telescopic rod is connected with a probe rod, and the probe rod is the telescopic end. The probe rod is used for replacing the measuring oil cylinder to extend out of the shield shell or the cutter head, so that the measuring oil cylinder can be effectively protected.
Furthermore, the measuring oil cylinder is coaxially connected with the probe rod, so that the action structure is simple, and the installation is rapid. But the device is longer, and occupies the shield body or the cutter head. For small-size heading machines, the inner space of the front shield is small, and the installation space is insufficient.
Furthermore, the measuring oil cylinder is arranged in parallel with the probe rod and is positioned on the side surface of the probe rod. The measuring oil cylinder and the probe rod are not on the same axis, so that the length of the whole device is reduced, and the device is convenient to adapt to installation in small-sized tunneling.
Further, the measuring oil cylinders are provided with two measuring oil cylinders which are symmetrically arranged on two sides of the probe rod, one ends of the two measuring oil cylinders are connected with the shield shell or the cutter head, the other ends of the two measuring oil cylinders are connected through end plates, and one end of the probe rod is connected with the end plates. The two measuring oil cylinders are arranged to synchronously drive the probe rod, so that the movement is more stable and reliable.
Further, the displacement monitoring unit comprises a flow meter and an oil pressure sensor, and the oil pressure sensor and the flow meter are both arranged on an oil inlet pipeline of the measuring oil cylinder and connected with the control system. When the control system receives the sudden surge of the reading of the oil pressure sensor, the measuring oil cylinder is controlled to stop acting, and the extension amount of the measuring oil cylinder is determined by detecting the flow rate and the through-flow time of the flow meter.
Furthermore, the displacement monitoring unit comprises an oil cylinder stroke sensor and an oil pressure sensor which are arranged in the measuring oil cylinder, and the oil pressure sensor and the oil cylinder stroke sensor are connected with the control system. When the control system receives the sudden surge of the reading of the oil pressure sensor, the measuring oil cylinder is controlled to stop acting, and the extending amount of the measuring oil cylinder is obtained through the reading of the oil cylinder stroke sensor.
Furthermore, a sealing unit is arranged between the probe rod and the shield shell or the cutter head, so that water and soil outside the shield shell are prevented from entering the shield body.
Further, the sealing unit comprises a Y-shaped rubber sealing ring or/and a sealing oil cup.
Furthermore, a radial upper guide sleeve is arranged on the shield body or/and the cutter head, one end of the measuring oil cylinder is connected with the guide sleeve, the probe rod is inserted into the upper guide sleeve in a sliding mode, and the sealing unit is arranged between the upper guide sleeve and the probe rod.
Furthermore, the upper guide sleeve is connected with a manual flange ball valve, the manual flange ball valve is connected with a lower guide sleeve, and the probe rod is inserted into the upper guide sleeve, the manual flange ball valve and the lower guide sleeve in a sliding mode.
Furthermore, winding pads are arranged between the upper guide sleeve and the manual flange ball valve and between the manual flange ball valve and the lower guide sleeve.
The method can measure the distance between the shield shell or the cutter head and the soil body, can also be contrasted with the overexcavation data of the overexcavation cutter, can compare the overexcavation amount at the cutter head with the actual space allowance at the shield shell, and even if a countermeasure is taken, further avoids the risk of shield body jamming caused by continuous tunneling or overexcavation under the condition that the real-time distance between the soil body and the shield body is unknown. Measuring the interlocking of the action of the oil cylinder and the excavation state of the development machine; in the normal tunneling process, the probe rod is always in a withdrawing state; when the tunneling is stopped, the control system can control the probe rod to extend out, and the actual space allowance of the upper part of the shield body after the over-excavation is measured. When the oil pressure of the measuring oil cylinder changes suddenly and is increased, the control system controls the measuring oil cylinder to stop acting, and the distance between the soil body on the upper part of the shield body and the shield shell is obtained through the matching calculation of the readings of the oil cylinder stroke sensor.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic view of the assembly of the present invention with a shield shell;
FIG. 2 is a schematic view of the retracted probe of the present invention;
FIG. 3 is a schematic view of the extended probe of the present invention;
FIG. 4 is a cross-sectional view of the sealing unit of FIGS. 2 and 3;
FIG. 5 is a schematic diagram of the structure of the oil path of the measuring cylinder in FIGS. 2 and 3;
FIG. 6 is a schematic view showing a structure in which the probe rod is retracted according to embodiment 4;
FIG. 7 is a schematic view showing a structure in which the probe rod of embodiment 4 is extended;
in the figure: 1. a probe rod; 2. an upper guide sleeve; 3. a Y-shaped rubber sealing ring; 4. sealing the lubricating oil cup; 5. a winding pad; 6. a manual flange ball valve; 7. a lower guide sleeve; 8. an end plate; 9. a lower cylinder base; 10. measuring an oil cylinder; 11. an upper cylinder seat is arranged; 12. a radial telescoping mechanism; 13. a second bolt; 15. a first bolt; 16. a shield shell; 17. an oil pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
And the distance between the excavated soil body and the shield shell 16 or the cutter head can be obtained through the numerical value measured by the displacement monitoring unit. The radial telescopic mechanism 12 is arranged on the shield shell 16, so that the distance between the shield shell 16 and the excavated soil body can be monitored; the radial telescopic mechanism 12 is arranged on the cutter head, so that the distance between the cutter head and the excavated soil body can be monitored; meanwhile, the radial telescopic mechanism 12 is arranged on the cutter head or the shield shell 16, so that the synchronous monitoring of the distance between the shield shell 16 and the excavated soil body and the distance between the cutter head and the excavated soil body can be realized, the contrast can be formed, the stability of the soil body can be conveniently judged according to the monitoring data, and then corresponding countermeasures can be timely carried out.
Specifically, as shown in fig. 1, the radial telescopic mechanism 12 includes a measuring cylinder 10 connected to the shield shell 16 or/and the cutterhead, and a telescopic rod of the measuring cylinder 10 is the telescopic end. The measuring oil cylinder 10 is arranged as a main action mechanism of the radial telescopic mechanism, so that the occupied space is small, the control is convenient and fast, the response is fast, and meanwhile, the telescopic rod of the oil cylinder has certain structural strength and can adapt to the environment outside the shield shell 16 or the cutter head.
Further, the telescopic rod is connected with a probe rod 1, the probe rod 1 is the telescopic end, the probe rod 1 is used for replacing the measuring oil cylinder 10 to extend out of the shield shell 16 or the cutter head, and the measuring oil cylinder 10 can be effectively protected. As shown in fig. 2 and 3, the measuring cylinder 10 is disposed parallel to the probe rod 1 and is located at a side surface of the probe rod 1. The measuring oil cylinder 10 and the probe rod 1 are not on the same axis, so that the length of the whole device is reduced, and the device is convenient to be installed and used in small-sized excavator advancing.
Further, the measuring oil cylinders 10 are symmetrically arranged on two sides of the probe rod 1, one ends of the two measuring oil cylinders 10 are connected with the shield shell 16 or the cutter head, the other ends of the two measuring oil cylinders are connected with the end plate 8 through the lower oil cylinder seat 9, and one end of the probe rod 1 is connected with the end plate 8. The two measuring oil cylinders 10 are arranged to synchronously drive the probe rod 1, so that the movement is more stable and reliable, and the invasion of muck is prevented from causing adverse effects on the measuring oil cylinders 10.
As shown in fig. 5, the displacement monitoring unit includes a flow meter and an oil pressure sensor 17, and the oil pressure sensor 17 and the flow meter are both disposed on the oil inlet pipeline of the measuring cylinder 10 and connected to the control system. When the control system receives the sudden surge of the reading of the oil pressure sensor 17, the control system controls the measuring oil cylinder 10 to stop acting, and the extension amount of the measuring oil cylinder 10 is determined by detecting the flow rate and the through-flow time of the flow meter. Or the displacement monitoring unit comprises an oil cylinder stroke sensor and an oil pressure sensor 17 which are arranged in the measuring oil cylinder 10, and the oil pressure sensor 17 and the oil cylinder stroke sensor are connected with the control system. When the control system receives the sudden surge of the reading of the oil pressure sensor 17, the control system controls the measuring oil cylinder 10 to stop acting, and the extending amount of the measuring oil cylinder 10 is obtained through the reading of the oil cylinder stroke sensor.
In addition, the action of the measuring oil cylinder is interlocked with the excavation state of the development machine; in the normal tunneling process, the probe rod is always in a withdrawing state; when the tunneling is stopped, the control system can control the probe rod to extend out, and the actual space allowance of the upper part of the shield body after the over-excavation is measured.
The super digging cutter on the cutter head is in the radius direction, and the super digging amount is recorded as LcThe difference between the excavation radius of the cutter head and the radius of the front shield is recorded as LdTheoretically, the distance between the soil outside the anterior shield and the anterior shield shell is recorded as L, and L = Lc+Ld. The actual distance between the soil outside the front shield and the front shield shell is the extending length of the feeler lever 1 measured by the oil cylinder stroke sensor and is recorded as LaBy comparing L with LaThe soil convergence condition can be monitored, and the whole monitoring process is automatically realized and displayed by the control system.
Further, the sealing unit comprises two Y-shaped rubber sealing rings 3 and a sealing lubricating oil cup 4, and the sealing effect is fully guaranteed.
The structure of this embodiment is the same as embodiment 1.
Further, a manual flange ball valve 6 is connected below the upper guide sleeve 2 through a first bolt 15 and a first gasket; the lower part of the manual flange ball valve 6 is connected with a lower guide sleeve 7 through a second bolt 13 and a second gasket. The probe rod 1 is inserted in the upper guide sleeve 2, the manual flange ball valve 6 and the lower guide sleeve 7 in a sliding mode.
Further, winding pads 5 are arranged between the upper guide sleeve 2 and the manual flange ball valve 6 and between the manual flange ball valve 6 and the lower guide sleeve 7.
The structure of this embodiment is the same as embodiment 1 or 2.
Furthermore, winding pads 5 are arranged between the upper guide sleeve 2 and the manual flange ball valve 6 and between the lower guide sleeve 7, and between the manual flange ball valve 6 and the measuring oil cylinder 10; in order to prevent water and soil outside the shield shell 16 from entering the shield body, two Y-shaped rubber sealing rings 3 and a sealing lubricating oil cup 4 are designed between the guide sleeve 2 and the probe rod 1.
The structure of this embodiment is the same as embodiment 1 or 2.
Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides an overexcavation measuring device which characterized in that: the device comprises radial telescopic mechanisms (12) which are respectively and radially arranged in a shield shell (16) and a cutter head, wherein the telescopic end of the radial telescopic mechanism (12) arranged in the shield shell (16) is radially penetrated and matched with the shield shell (16), the telescopic end of the radial telescopic mechanism (12) arranged in the cutter head is radially penetrated and matched with the cutter head, the radial telescopic mechanism (12) is connected with a displacement monitoring unit, and the displacement monitoring unit is connected with a control system;
the radial telescopic mechanism (12) comprises a measuring oil cylinder (10), the measuring oil cylinder (10) arranged in a shield shell (16) is connected with the shield shell (16), the measuring oil cylinder (10) arranged in a cutter head is connected with the cutter head, a telescopic rod of the measuring oil cylinder (10) is connected with a probe rod (1), and the probe rod (1) is the telescopic end;
the measuring oil cylinders (10) are coaxially connected with the probe rod (1), or the measuring oil cylinders (10) are arranged in parallel with the probe rod (1) and are positioned on the side surface of the probe rod (1), when the measuring oil cylinders (10) are arranged in parallel with the probe rod (1), two measuring oil cylinders (10) are arranged and are symmetrically arranged on two sides of the probe rod (1), one ends of the two measuring oil cylinders (10) are connected with the shield shell (16) or the cutter head, the other ends of the two measuring oil cylinders are connected with the end plate (8), and one end of the probe rod (1) is connected with the end plate (8);
the radial telescopic mechanism (12) is arranged on the shield shell (16), and the distance between the shield shell (16) and the excavated soil body can be monitored; the radial telescopic mechanism (12) is arranged on the cutter head, so that the distance between the cutter head and the excavated soil body can be monitored; meanwhile, the radial telescopic mechanisms (12) are arranged on the cutter head and the shield shell (16), so that the distance between the shield shell (16) and the excavated soil body and the distance between the cutter head and the excavated soil body can be synchronously monitored, contrast can be formed, the stability of the soil body can be conveniently judged according to monitoring data, and corresponding measures can be timely taken.
2. The overexcavation measurement apparatus of claim 1, wherein: the displacement monitoring unit comprises a flow meter and an oil pressure sensor (17), wherein the oil pressure sensor (17) and the flow meter are arranged on an oil inlet pipeline of the measuring oil cylinder (10) and are connected with the control system.
3. The overexcavation measurement apparatus of claim 1, wherein: the displacement monitoring unit comprises an oil cylinder stroke sensor and an oil pressure sensor (17) which are arranged in the measuring oil cylinder (10), and the oil pressure sensor (17) and the oil cylinder stroke sensor are connected with the control system.
4. The overexcavation measurement apparatus of claim 3, wherein: and a sealing unit is arranged between the probe rod (1) and the shield shell (16) or the cutter head.
5. The overexcavation measurement apparatus of claim 4, wherein: the sealing unit comprises a Y-shaped rubber sealing ring (3) or/and a sealing lubricating oil cup (4).
6. The overexcavation measurement device of claim 4 or 5, wherein: be provided with radial last uide bushing (2) on shield shell (16) or the blade disc, the one end of measuring hydro-cylinder (10) links to each other with uide bushing (2), probe rod (1) slip interlude is in last uide bushing (2), sealed unit sets up between last uide bushing (2) and probe rod (1).
7. The overexcavation measurement apparatus of claim 6, wherein: go up uide bushing (2) and be connected with manual flange ball valve (6), manual flange ball valve (6) are connected with uide bushing (7) down, probe rod (1) slip alternates in last uide bushing (2), manual flange ball valve (6) and uide bushing (7) down.
8. The overexcavation measurement apparatus of claim 7, wherein: and winding pads (5) are arranged between the upper guide sleeve (2) and the manual flange ball valve (6) and between the manual flange ball valve (6) and the lower guide sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010645317.6A CN111734428B (en) | 2020-07-07 | 2020-07-07 | Over-excavation measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010645317.6A CN111734428B (en) | 2020-07-07 | 2020-07-07 | Over-excavation measuring device |
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| CN111734428A CN111734428A (en) | 2020-10-02 |
| CN111734428B true CN111734428B (en) | 2022-02-08 |
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| CN202010645317.6A Active CN111734428B (en) | 2020-07-07 | 2020-07-07 | Over-excavation measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114136178A (en) * | 2021-11-29 | 2022-03-04 | 中国电建集团贵阳勘测设计研究院有限公司 | Device for measuring rock pipe jacking pipe external overexcavation |
| CN114109397A (en) * | 2021-11-29 | 2022-03-01 | 深圳地铁建设集团有限公司 | Shield constructs card machine monitoring and prevention device based on measure expand and dig clearance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0441893A (en) * | 1990-06-06 | 1992-02-12 | Shimizu Corp | Measuring device for tail clearance of shield excavator |
| CN105625290A (en) * | 2015-12-31 | 2016-06-01 | 上海岩土工程勘察设计研究院有限公司 | Non-contact depth measurement device for static sounding and application method thereof |
| CN109443284A (en) * | 2018-11-13 | 2019-03-08 | 中铁工程装备集团有限公司 | A kind of shield machine excavation gap measuring apparatus |
| CN111365006A (en) * | 2020-04-17 | 2020-07-03 | 中铁工程装备集团有限公司 | Interchangeable formula clearance detection device in hole |
-
2020
- 2020-07-07 CN CN202010645317.6A patent/CN111734428B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0441893A (en) * | 1990-06-06 | 1992-02-12 | Shimizu Corp | Measuring device for tail clearance of shield excavator |
| CN105625290A (en) * | 2015-12-31 | 2016-06-01 | 上海岩土工程勘察设计研究院有限公司 | Non-contact depth measurement device for static sounding and application method thereof |
| CN109443284A (en) * | 2018-11-13 | 2019-03-08 | 中铁工程装备集团有限公司 | A kind of shield machine excavation gap measuring apparatus |
| CN111365006A (en) * | 2020-04-17 | 2020-07-03 | 中铁工程装备集团有限公司 | Interchangeable formula clearance detection device in hole |
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| CN111734428A (en) | 2020-10-02 |
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