CN111473923B - Normal-pressure cutter inspection device and method for shield tunneling machine - Google Patents
Normal-pressure cutter inspection device and method for shield tunneling machine Download PDFInfo
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- CN111473923B CN111473923B CN202010413534.2A CN202010413534A CN111473923B CN 111473923 B CN111473923 B CN 111473923B CN 202010413534 A CN202010413534 A CN 202010413534A CN 111473923 B CN111473923 B CN 111473923B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The invention relates to a normal pressure cutter inspection device of a shield machine, which is used for inspecting a cutter assembly of the shield machine, and comprises: the inner part of the closed box body is provided with an accommodating space, and the box body is provided with a connecting hole for mounting the cutter component; the simulation medium is filled in the accommodating space; the pressure pump is arranged on the box body, and the pressure pump is used for pressurizing the inside of the box body so as to simulate the stress condition of the cutter assembly when the cutter assembly is not cut; and the oil cylinder is arranged on the box body corresponding to the cutter assembly, jacking force is applied to the cutter assembly through the oil cylinder, and the stress condition of the cutter assembly during cutting is simulated through the jacking force. Whether the situation of leakage exists at the position of the cutter is observed in the whole inspection process, so that whether the cutter meets the use specification can be detected, and the safety and the reliability of the use of the cutter are ensured.
Description
Technical Field
The invention relates to the technical field of shield tunneling machines, in particular to a device and a method for inspecting a normal-pressure cutter of a shield tunneling machine.
Background
The use specification requirement of shield machine ordinary pressure cutter is higher because the difference of operational environment and construction occasion in the shield machine work progress, the cutter is installed on the blade disc of shield machine and partly stretches out in the blade disc, the cutter is when the construction, need keep good leakproofness, avoid muddy water seepage to get into in the shield machine, but current shield machine cutter is direct use after purchasing usually, lack the inspection to the leakproofness of shield machine cutter, the cutter that leads to after the installation appears muddy water seepage and advances the accident in the shield machine, make the unable normal construction of shield machine, there is great construction risk.
Therefore, it is desirable to provide a device and a method for inspecting a normal pressure cutter of a shield machine to inspect the sealing performance of the normal pressure cutter to solve the above technical problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device for inspecting a normal-pressure cutter of a shield machine, so as to solve the problem that the sealing performance of the normal-pressure cutter is not inspected in the prior art.
In order to achieve the above object, the present invention provides a normal pressure cutter inspection device for a shield machine, which is used for inspecting a cutter assembly of the shield machine, and comprises:
the inner part of the closed box body is provided with an accommodating space, and the box body is provided with a connecting hole for mounting the cutter component;
the simulation medium is filled in the accommodating space;
the pressure pump is arranged on the box body, and the pressure pump is used for pressurizing the inside of the box body so as to simulate the stress condition of the cutter assembly when the cutter assembly is not cut; and
and the oil cylinder is arranged on the box body corresponding to the cutter assembly, and applies jacking force to the cutter assembly through the oil cylinder, so that the stress condition of the cutter assembly during cutting is simulated through the jacking force.
The invention simulates the pressure of muddy water to the cutter assembly when the cutter assembly does not cut by injecting a simulation medium into the box body and pressurizing the box body to a set pressure value; the jacking force is applied to the cutter assembly through the oil cylinder, the acting force of a soil body on the cutter assembly during cutting of the cutter is simulated through the jacking force, and whether the situation of simulated medium leakage exists at the position of the cutter assembly is observed in the whole inspection process, so that whether the cutter assembly has good sealing performance can be detected, whether the cutter assembly meets the use specification is judged, and the use safety and reliability of the cutter assembly are ensured.
The normal pressure cutter inspection device of the shield tunneling machine is further improved in that the box body is provided with a connecting seat, and the connecting hole is formed in the connecting seat;
the cutter component is provided with a gate corresponding to the connecting seat, and the gate is attached to and fixedly connected with the connecting seat through a bolt.
The shield tunneling machine normal pressure cutter inspection device is further improved in that the connecting hole is formed in the side face of the box body, and the oil cylinder is installed on the top face of the box body.
The normal pressure cutter inspection device of the shield machine is further improved in that a reserved opening is formed in the box body and connected with a pressurizing pipeline;
the pressure pump is arranged on the pressure pipeline.
The normal-pressure cutter inspection device of the shield tunneling machine is further improved in that the box body is provided with a liquid inlet pipeline, and a first ball valve is arranged on the liquid inlet pipeline;
the box body is provided with a liquid outlet pipeline, and a second ball valve is arranged on the liquid outlet pipeline.
The normal pressure cutter inspection device of the shield machine is further improved in that the box body is provided with a mounting hole for mounting the oil cylinder;
the mounting hole is detachably provided with a mounting cover.
The normal-pressure cutter inspection device of the shield machine is further improved in that the box body is provided with an inspection hole for inspecting the interior of the box body;
And a fixed cover is detachably arranged on the inspection hole.
The invention also provides a testing method using the testing device for the cutter of the shield machine, which is used for testing the cutter of the shield machine and comprises the following steps:
providing a cutter assembly, mounting the cutter assembly on the box body at the mounting hole, and filling the simulation medium into the box body;
pressurizing the interior of the box body to a set pressure value through the pressurizing pump so as to simulate the stress condition of the cutter assembly when the cutter assembly is not cut after being installed, maintaining the set pressure value within a set time, observing whether the simulated medium leaks from the cutter assembly, and if the simulated medium leaks from the cutter assembly, determining that the cutter assembly does not meet the use specification;
when keeping during the set pressure value, through the hydro-cylinder operation makes the hydro-cylinder is right cutter unit applys jacking force, in order to simulate the atress condition during the cutter unit cutting, and observe whether there is the simulation medium in the condition of cutter unit department seepage, if cutter unit department takes place the phenomenon of simulation medium seepage, then cutter unit is not conform to the use specification.
The inspection method of the normal-pressure cutter inspection device of the shield tunneling machine is further improved in that the box body is provided with a connecting seat, and the connecting hole is formed in the connecting seat;
the cutter assembly comprises a middle sleeve and a cutter body detachably arranged on the middle sleeve, and the middle sleeve is provided with a gate corresponding to the connecting seat;
installing the cutter assembly on the box body at the installation hole, and the method comprises the following steps:
and inserting the middle sleeve part into the mounting hole to enable the gate to be attached to the connecting seat, and fixedly connecting the gate and the connecting seat through bolts.
The further improvement of the inspection method of the normal pressure cutter inspection device of the shield tunneling machine is that the inspection method further comprises the following steps:
and when the set pressure value is kept, moving one end of the cutter body, which is positioned in the box body, to one side, which is far away from the box body, of the gate, closing the gate, continuously disassembling the cutter body on the middle sleeve, observing whether the simulated medium leaks from the cutter assembly, and if the simulated medium leaks from the cutter assembly, determining that the cutter assembly does not meet the use specification.
Drawings
Fig. 1 is a schematic structural diagram of a shield tunneling machine normal pressure cutter inspection device.
Fig. 2 is a state diagram of the inspection device for the normal pressure cutter of the shield tunneling machine according to the present invention when the cutter is not mounted on the inspection device.
Fig. 3 is a state diagram of the cutter of the normal pressure cutter inspection device of the shield tunneling machine of the present invention mounted on the inspection device.
Fig. 4 is a schematic structural diagram of a cutter of the normal pressure cutter inspection device of the shield tunneling machine.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 invention and do not limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a normal-pressure cutter inspection device for a shield machine, which is used for inspecting a cutter of the shield machine. The invention comprises the following steps: the device comprises a box body, a simulation medium, a pressurizing pump and an oil cylinder, wherein the simulation medium is injected into the box body and is pressurized to a set pressure value in the box body so as to simulate the pressure of muddy water on a cutter assembly when the cutter assembly does not cut; the jacking force is applied to the cutter assembly through the oil cylinder, the acting force of a soil body on the cutter assembly during cutting of the cutter is simulated through the jacking force, and whether the situation of simulated medium leakage exists at the position of the cutter assembly is observed in the whole inspection process, so that whether the cutter assembly has good sealing performance can be detected, whether the cutter assembly meets the use specification is judged, and the use safety and reliability of the cutter assembly are ensured.
The invention relates to a shield machine normal pressure cutter checking device, which is described in the following with reference to the accompanying drawings.
Referring to fig. 1, 2 and 4, in the present embodiment, an inspection apparatus for a normal pressure cutter of a shield tunneling machine is used for inspecting a cutter assembly 7 of the shield tunneling machine, and the inspection apparatus includes: the device comprises a box body 1, a simulation medium, a pressure pump 2 and an oil cylinder 4. The box 1 is airtight form, and inside is formed with an accommodation space, the box is seted up and is supplied to install the connecting hole of cutter unit 7, simulation medium is filled in the accommodation space, make cutter unit 7 part dip in the simulation medium, the rest stretches out in box 1, force (forcing) pump 2 is installed on box 1, pressurize in order to simulate the atress condition when cutter unit 7 does not cut in box 1 through force (forcing) pump 2, hydro-cylinder 4 corresponds cutter unit 7 and installs on box 1, exert the top thrust through hydro-cylinder 4 to cutter unit 7, the atress condition when cutting through top thrust in order to simulate cutter unit 7. Specifically, the box body 1 is square.
The testing device in the embodiment injects a simulation medium into the box body 1 and pressurizes the box body 1 to a set pressure value so as to simulate the pressure of muddy water on the cutter assembly 7 when the cutter assembly 7 is not cutting; the jacking force is applied to the cutter assembly 7 through the oil cylinder, the acting force of a soil body on the cutter assembly 7 during cutter cutting is simulated through the jacking force, and whether the situation of simulated medium leakage exists at the position of the cutter assembly 7 is observed in the whole inspection process, so that whether the cutter assembly 7 has good sealing performance can be detected, whether the cutter assembly 7 meets the use specification is judged, and the use safety and reliability of the cutter assembly 7 are ensured.
Referring to fig. 2, 3 and 4, in the embodiment, the box body 1 is provided with a connecting seat 141, the connecting hole is opened on the connecting seat 141, a gate 721 is arranged on the cutter assembly 7 corresponding to the connecting seat 141, the gate 721 is attached and fixedly connected with the connecting seat 141 through a bolt, and a sealing ring is arranged at the connection position of the gate 721 and the connecting seat 141. The cutter assembly 7 comprises an intermediate sleeve 72 and a cutter body 71 removably mounted on the intermediate sleeve 72.
Preferably, the connection cover 142 is detachably mounted on the connection seat 141, and the connection cover 142 is fixedly mounted on the connection seat 141 by bolts.
Referring to fig. 2 and 3, further, the connection hole is formed in the side surface of the tank body 1, and the oil cylinder 4 is installed in the top surface of the tank body 1. The oil cylinder 4 partially extends into the accommodating space, and when the oil cylinder 4 operates, the oil cylinder 4 extends to abut against the side part of the cutter head 712 so as to exert an abutting force on the cutter assembly 7, and the transverse acting force of soil on the cutter head 712 when the cutter head 712 cuts can be simulated through the abutting force.
Preferably, the testing device in this embodiment further comprises a pressure gauge 3 installed on the box body 1 for detecting the pressure in the box body 1.
Referring to fig. 1 and 2, in a specific embodiment, a reserved opening 13 is formed in the tank body 1, the reserved opening 13 is connected with a pressurizing pipeline, and the pressurizing pump 2 and the pressure gauge 3 are arranged on the pressurizing pipeline. Specifically, the reserved opening 13 is formed in the top surface of the box body 1.
Referring to fig. 1 and fig. 3, further, the tank 1 is provided with a liquid inlet 11, the liquid inlet 11 is fixedly connected with a liquid inlet pipeline, the liquid inlet pipeline is provided with a first ball valve 5, the tank 1 is provided with a liquid outlet 12, the liquid outlet 12 is fixedly connected with a liquid outlet pipeline, and the liquid outlet pipeline is provided with a second ball valve 6.
Referring to fig. 1, preferably, the box body 1 is provided with a mounting hole for mounting the oil cylinder 4, a mounting cover 15 is detachably mounted on the mounting hole, and the mounting cover 15 is fixedly mounted on the mounting hole through a bolt. Specifically, the mounting holes are located on the top surface of the case 1. Preferably, the box body 1 is provided with a mounting seat, the mounting hole is opened on the mounting seat, and the mounting cover 15 is fixedly mounted on the mounting seat through a bolt.
Referring to fig. 1, further, the box body 1 is provided with an inspection hole for inspecting the inside of the box body 1, a fixing cover 16 is detachably mounted on the inspection hole, the fixing cover 16 is fixedly mounted in the inspection hole through a bolt, and the inspection hole is used for inspecting the inside of the box body 1, so that the box body 1 is convenient to maintain and inspect. Specifically, the inspection hole is located on the other side surface of the case 1. Preferably, the box body 1 is provided with a fixing seat, the inspection hole is opened on the fixing seat, and the fixing cover 16 is fixedly installed on the fixing seat through a bolt.
Specifically, the simulation medium is water.
The acting force of the muddy water on the cutter assembly 7 can be obtained through calculation according to the buried depth of the tunnel and the specific gravity of the muddy water. The tool assembly 7 is normally operated under 0.6MPa, and the set pressure value during the inspection is 0.8MPa, so that the safety and reliability of the use of the tool assembly 7 are ensured in order to inspect the tool assembly 7 having better sealing performance and usability.
By installing the strain gauge on the cutter assembly 7 and cutting the soil body by the cutter assembly 7, the acting force of the soil body on the cutter assembly 7 during cutting of the cutter assembly 7 can be measured, and by adopting a proper oil cylinder 4, the jacking force which is equal to or higher than the pressure but not more than the bearing range of the cutter assembly 7 can be generated, so that the acting force of the soil body on the cutter assembly 7 during cutting of the cutter assembly 7 can be simulated.
Referring to fig. 2 and 3, the working process of the normal pressure cutter inspection device of the shield tunneling machine of the present invention will be described.
The cutter assembly 7 is arranged on the box body 1 at the connecting hole after the connecting cover 142 is detached, the oil cylinder 4 is arranged on the box body 1 at the mounting hole after the mounting cover 15 is detached, a simulation medium is injected into the box body 1 through a liquid inlet pipeline and is filled, the box body 1 is pressurized to a set pressure value of 0.8MPa through the pressure pump 2, the set pressure value is kept for 30 minutes, whether the simulation medium leaks from the cutter assembly 7 or not is observed, and if the simulation medium leaks from the cutter assembly 7, the cutter assembly 7 does not conform to the use specification; when the set pressure value is kept, jacking force is applied to the cutter assembly 7 through the oil cylinder 4, whether the situation that a simulation medium leaks from the cutter assembly 7 is observed, and if the phenomenon that the simulation medium leaks from the cutter assembly 7 occurs, the cutter assembly 7 does not meet the use specification; when the set pressure value is kept, one end of the cutter body 71, which is positioned in the box body 1, is moved to one side, which is far away from the box body 1, of the gate 721, the gate 721 is closed, the cutter body 71 is continuously detached from the middle sleeve 72, whether the simulated medium leaks from the cutter assembly 7 or not is observed, and if the simulated medium leaks from the cutter assembly 7, the cutter assembly does not meet the use specification.
The invention also provides a testing method using the testing device for the shield tunneling machine cutter, which comprises the following steps:
providing a cutter component 7, installing the cutter component 7 on the box body 1 at the installation hole, and filling the simulation medium into the box body 1.
Pressurize to the set pressure value in the box 1 through force (forcing) pump 2 to the atress condition when the simulation cutter unit 7 installation back is not cut, keep the set pressure value for at least 30 minutes, and observe whether there is the condition of simulation medium in cutter unit 7 department seepage, if the phenomenon of simulation medium seepage takes place in cutter unit 7 department, then cutter unit 7 is not conform to the use specification.
When the set pressure value is kept, the oil cylinder 4 is operated to extend and prop the cutter assembly 7 so as to simulate the stress condition of the cutter assembly 7 during cutting, and whether the condition of simulating the leakage of a medium at the cutter assembly 7 exists is observed, and if the phenomenon of simulating the leakage of the medium occurs at the cutter assembly 7, the cutter assembly 7 does not conform to the use specification.
Referring to fig. 2, 3 and 4, further, the box body 1 is provided with a connecting seat 141, a connecting hole is opened on the connecting seat 141, the cutter assembly 7 comprises a middle sleeve 72 and a cutter body 71 detachably mounted on the middle sleeve 72, and the middle sleeve 72 is provided with a gate 721 corresponding to the connecting seat 141.
The cutter assembly 7 is arranged on the box body 1 at the mounting hole, and the method comprises the following steps:
the middle sleeve 72 is partially inserted into the mounting hole to make the gate 721 attached to the connecting seat 141, and the gate 721 is fixedly connected to the connecting seat 141 by a bolt.
Referring to fig. 2, 3 and 4, further, the inspection method further includes the steps of: when the set pressure value is kept, one end of the cutter body 71 in the box body 1 is moved to one side of the gate 721, which is far away from the box body 1, the gate 721 is closed, the cutter body 71 is continuously detached from the middle sleeve 72, so that the stress condition of the cutter body 71 detached from the middle sleeve 72 is simulated, whether a condition that a simulated medium leaks from the cutter assembly 7 exists is observed, and if the simulated medium leaks from the cutter assembly 7, the cutter assembly does not meet the use specification.
If the sealing performance of the gate 721 is not good after the gate 721 is closed, the problem of leakage of the simulation medium at the gate 721 also exists, so that the leakage of the simulation medium needs to be observed in the process of detaching the whole cutter body 71 from the intermediate sleeve 72 to check the sealing performance of the cutter body 71 and the intermediate sleeve 72.
The service life of the cutter assembly 7 can also be checked through repeated experiments, for example, the cutter assembly 7 needs to be operated 200 times to reach the service life, 200 times of jacking force is applied to the cutter assembly 7 through the oil cylinder 4, and if the number of times of applying the jacking force to the cutter assembly 7 by the oil cylinder 4 is less than 200 times, and the cutter assembly 7 is damaged, the cutter assembly 7 does not meet the use specification.
By adopting the technical scheme, the invention has the following beneficial effects:
according to the invention, a simulation medium is injected into the box body, and the pressure of muddy water on the cutter assembly is simulated when the cutter assembly is not cut by pressurizing the box body to a set pressure value; applying jacking force to the cutter assembly through the oil cylinder, and simulating acting force of a soil body on the cutter assembly during cutting of the cutter through the jacking force; the cutter body is detached from the middle sleeve to simulate the acting force of muddy water on the cutter assembly when the cutter assembly is detached, and whether the condition of simulating medium leakage exists at the position of the cutter assembly is observed in the whole inspection process, so that whether the cutter assembly has good sealing performance can be detected, whether the cutter assembly meets the use specification is judged, and the safety and the reliability of the use of the cutter assembly are ensured.
It should be noted that the structures, the proportions, the sizes, and the like shown in the drawings attached to the present specification are only used for matching the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention has no technical essence, and any modifications of the structures, changes of the proportion relation, or adjustments of the sizes, can still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms may be changed or adjusted without substantial change in the technical content.
Claims (2)
1. The utility model provides a shield constructs quick-witted ordinary pressure cutter verifying attachment for the cutter unit who tests the shield and construct the machine, its characterized in that, verifying attachment includes:
the inner part of the closed box body is provided with an accommodating space, and the box body is provided with a connecting hole for mounting the cutter component; the box body is provided with a connecting seat, the connecting hole is formed in the connecting seat, a gate is arranged on the cutter assembly corresponding to the connecting seat, the gate is attached to and fixedly connected with the connecting seat through a bolt, the connecting hole is formed in the side face of the box body, a reserved opening is formed in the box body, the reserved opening is connected with a pressurizing pipeline, the pressurizing pump is arranged on the pressurizing pipeline, the box body is provided with a liquid inlet pipeline, a first ball valve is arranged on the liquid inlet pipeline, the box body is provided with a liquid outlet pipeline, and a second ball valve is arranged on the liquid outlet pipeline;
the pressure gauge is arranged on the box body and used for detecting the pressure in the box body, and the pressure gauge is arranged on the pressurizing pipeline;
the simulation medium is filled in the accommodating space;
the pressure pump is arranged on the box body, and the pressure pump is used for pressurizing the inside of the box body so as to simulate the stress condition of the cutter assembly when the cutter assembly is not cut;
The oil cylinder is arranged on the top surface of the box body, a mounting hole for mounting the oil cylinder is formed in the box body, and a mounting cover is detachably mounted on the mounting hole;
the cutter assembly comprises a middle sleeve and a cutter body detachably arranged on the middle sleeve, and the middle sleeve is provided with a gate corresponding to the connecting seat;
pressurizing the interior of the box body to a set pressure value through the pressurizing pump so as to simulate the stress condition of the cutter assembly when the cutter assembly is not cut after being installed, maintaining the set pressure value within a set time, observing whether the simulated medium leaks from the cutter assembly, and if the simulated medium leaks from the cutter assembly, determining that the cutter assembly does not meet the use specification;
when the set pressure value is kept, the oil cylinder operates to apply jacking force to the cutter assembly so as to simulate the stress condition of the cutter assembly during cutting, and observe whether the simulated medium leaks from the cutter assembly, if the simulated medium leaks from the cutter assembly, the cutter assembly does not meet the use specification;
And when the set pressure value is kept, moving one end of the cutter body, which is positioned in the box body, to one side, which is far away from the box body, of the gate, closing the gate, continuously disassembling the cutter body from the middle sleeve, observing whether the simulated medium leaks from the cutter assembly, and if the simulated medium leaks from the cutter assembly, determining that the cutter assembly does not conform to the use specification.
2. The device for inspecting the normal-pressure cutter of the shield tunneling machine according to claim 1, wherein the box body is provided with an inspection hole for inspecting the interior of the box body;
and a fixed cover is detachably arranged on the inspection hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010413534.2A CN111473923B (en) | 2020-05-15 | 2020-05-15 | Normal-pressure cutter inspection device and method for shield tunneling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010413534.2A CN111473923B (en) | 2020-05-15 | 2020-05-15 | Normal-pressure cutter inspection device and method for shield tunneling machine |
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| CN111473923B true CN111473923B (en) | 2022-06-28 |
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| CN112761656B (en) * | 2021-01-28 | 2023-11-17 | 江苏马超地下工程设备有限公司 | Cutter head installation and inspection device of mini-type tunneling machine |
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