CN115307520A - Automatic shield tail clearance measuring device and method - Google Patents
Automatic shield tail clearance measuring device and method Download PDFInfo
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- CN115307520A CN115307520A CN202210941827.7A CN202210941827A CN115307520A CN 115307520 A CN115307520 A CN 115307520A CN 202210941827 A CN202210941827 A CN 202210941827A CN 115307520 A CN115307520 A CN 115307520A
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
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Abstract
The invention discloses an automatic measuring device and method for a shield tail gap. The invention can improve the automation degree and the measurement precision of the automatic measuring device, prolong the service life, is easy to operate, and can measure the minimum value and the true value of the shield tail clearance, so that the measured data can be fed back in real time, the shield tail clearance value can be accurately obtained in the first time, and the construction parameters can be adjusted in time, thereby ensuring the segment assembling and forming quality.
Description
Technical Field
The invention relates to a shield tail clearance automatic measuring device and method.
Background
The shield tail clearance is the relative space between shield constructs the casing and the section of jurisdiction, if shield tail clearance is relatively poor, can take place the contact between section of jurisdiction and the shield constructs the casing, causes the section of jurisdiction to receive the concentrated power influence to take place breakage and convergence phenomenon. Therefore, as field workers, the shield tail clearance value must be accurately acquired in the first time, and the construction parameters are timely adjusted to ensure the assembling and forming quality of the duct piece. How to quickly and accurately carry out shield tail clearance measurement work is always the key point of scientific and technological research and development in the technical field of shield construction industry.
The traditional shield tail clearance value is obtained by manually and directly measuring the current ring segment position of the shield tail by using a steel ruler, and due to the problems that the shield tail construction environment is limited, the movement space is narrow, mechanical equipment is dense and the like, the normal tunneling and assembling progress is influenced, and great hidden danger is generated on the safety of measuring personnel; based on this, in recent years, the shield tail clearance automatic measurement technology is researched and broken through.
At present, the automatic measurement of the shield tail clearance is mainly divided into two categories, namely a physical contact type and an acousto-optic acquisition type. The latter has poor measurement precision and low practicability due to the influence of shield tail space environment, more dust and easy interference; the former has the problems of narrow gap space of the shield tail, inconvenient installation, easy damage and the like, and is not used effectively due to the direct contact between the device and the duct piece.
Disclosure of Invention
The invention aims to provide a shield tail clearance automatic measuring device and a technical scheme of the shield tail clearance automatic measuring device, aiming at the defects in the prior art, the automatic measuring device and the method can improve the automation degree and the measuring precision, prolong the service life, are easy to operate, can measure the minimum value and the true value of the shield tail clearance, can feed back the measured data in real time, accurately obtain the shield tail clearance value in the first time, and timely adjust the construction parameters to ensure the segment assembling and forming quality.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a shield tail clearance automatic measuring device which characterized in that: the automatic measuring device is arranged on the inner wall of the shield tail and is positioned in a gap formed between the shield tail and the duct piece, at least one arc-shaped groove is arranged on the shield tail, and the automatic measuring device moves along the arc-shaped groove to realize real-time measurement of gaps at different positions; through the design of above-mentioned structure, not only can improve automatic measuring device's degree of automation and measurement accuracy, increase of service life, easy operation can measure the minimum and the truth value in shield tail clearance moreover, makes measured data can feed back in real time, does not receive shield tail raise dust and the more influence of shield tail inner wall muddy water, can overcome adverse circumstances, the very first time precision acquires shield tail clearance numerical value to in time adjust construction parameter, assemble shaping quality with the guarantee section of jurisdiction.
Furthermore, the length of the arc-shaped groove is 2/3 of the length of the outer circumference of the shield tail, so that the automatic measuring device can move along the arc-shaped groove conveniently, and the measuring requirements of gaps at different positions are met.
Further, automatic measuring device includes slider and measuring mechanism, and measuring mechanism locates on the slider, slider and arc wall phase-match to remove along the arc wall, the slider can drive measuring mechanism and remove along the arc wall together according to clearance measuring position, can fix when removing to required position after, rethread measuring mechanism carries out clearance measurement, and it is nimble convenient to use, and the reliability is high, is difficult to the production error.
Further, the measuring mechanism comprises a cylinder body, a piston rod, a controller and a turbine flowmeter, the cylinder body is arranged in a sliding block, a cylinder sleeve is arranged in the cylinder body, the piston rod is movably connected to the cylinder sleeve, an oil cylinder seal is arranged between the piston rod and the cylinder sleeve, the controller is arranged on one side of the cylinder body, an oil inlet and an oil outlet are arranged on the other side of the cylinder body, the turbine flowmeter is connected to the oil inlet, a flow display screen is arranged on the turbine flowmeter, the turbine flowmeter is connected with the controller through a pipeline protection cylinder, the controller directly contacts with a duct piece in an oil cylinder extending mode, the measuring precision is high, shield tunneling and duct piece assembling construction can be effectively guided, the cylinder sleeve is finely processed through brass, the wear resistance and self-lubricity of the cylinder sleeve are effectively guaranteed, the piston rod automatically retracts after the piston rod extends out to complete measurement, the guidance performance and the service life are improved, the oil cylinder seal adopts high-pressure wear-resistant seal, the sealing reliability and the measuring accuracy are guaranteed, meanwhile, the high-precision turbine flowmeter is additionally arranged at the position of the oil inlet, the transmission flow value is transmitted to an upper computer system, the upper computer system calculates the specific extension amount of the piston rod through the specific flow value and the cylinder diameter of the cylinder body, and obtains the specific value of the shield tail clearance.
Further, the tip of piston rod is equipped with contact pick up for respond to touch signal, and feed back to the controller, contact pick up's design, can make the piston rod release gently can, can produce the signal after the inner wall collision of contact pick up and section of jurisdiction, through controller control hydraulic oil stop input, can read corresponding data simultaneously, improve measuring precision greatly.
Further, be equipped with power module and wireless signal transceiver in the slider, power module and wireless signal transceiver all with controller electric connection, power module can adopt the battery to provide the electric energy, also can pass through the wire and connect external power source equipment through the stay tube, wireless signal transceiver is used for data transmission and control, can use on the wireless remote controller transmission wireless signal to the controller by the manual work, it is chain or the upper computer that resumes to relieve the host computer, and can do the control transmission signal control piston rod of heat and stretch out or retract, use under convenient to overhaul and the special needs.
Further, actuating mechanism connects the arc wall through actuating mechanism in the bottom of slider, actuating mechanism includes driving motor, bevel gear group, the gear, rack and supporting wheel, driving motor is located the slider, driving motor passes through bevel gear group link gear, gear revolve connects the bottom at the slider, the rack distributes along the arc wall, wheel and rack phase-match, supporting wheel evenly distributed is on the bottom surface of slider, it is rotatory to drive bevel gear group through driving motor, and then can drive gear revolve, reverse effort through the rack, can make the slider remove along the arc wall, satisfy the actual regulation needs, the supporting wheel can support the slider, stability and reliability when improving the slider and removing.
Further, the side of the slider is connected with the arc-shaped groove through a limiting mechanism, the limiting mechanism comprises a supporting pipe, a limiting wheel and a clamping component, the supporting pipe is fixed on two sides of the slider, the limiting wheel is fixed on the supporting pipe, a ring-shaped groove is formed in the limiting wheel, guide grooves are symmetrically formed in the inner wall of the arc-shaped groove and are matched with the ring-shaped groove, rollers are arranged on the ring-shaped groove and are supported on the guide grooves, the clamping component comprises a hydraulic cylinder and a telescopic rod, the hydraulic cylinder is arranged on the slider and is connected to the limiting wheel through a piston rod, the hydraulic cylinder penetrates through the limiting wheel to abut against the side wall of the guide groove, the supporting pipe and the limiting wheel are designed, the slider can move along the guide groove, stability and reliability of the slider during moving are improved, meanwhile, a pipeline connected with an oil inlet and an oil outlet can be connected with external oil supply equipment through the supporting pipe, stable work of the measuring mechanism is guaranteed, measuring errors are reduced, the rollers can reduce friction force, after the slider moves to a required position, the telescopic rod is driven to stretch out through the hydraulic cylinder, the side wall of the guide groove can be extruded, and fixing of the slider is realized.
Furthermore, the automatic measuring device also comprises a wireless remote controller, and a remote controller display screen, an upper computer interlocking key, an upper computer interlocking release key, an oil cylinder extending key, an oil cylinder retracting key and an emergency stop key are arranged on the wireless remote controller.
The measuring method of the shield tail clearance automatic measuring device is characterized by comprising the following steps of:
1) An interface of the automatic measuring device is connected to an upper computer system of the shield tunneling machine through a PLC (programmable logic controller) and is interlocked with the cutter head, so that the expansion of the oil cylinder and the rotation of the cutter head are synchronous;
2) Determining the measuring position of the automatic measuring device according to the moving position of the shield tunneling machine, moving the automatic measuring device to a required position along an arc-shaped groove on the outer circumference of the shield tail through a driving mechanism, and then fixing;
3) Then starting a measuring mechanism, driving a contact sensor to move through a piston rod of the measuring mechanism, enabling the contact sensor to be in contact with a duct piece, generating a signal to be fed back to a controller, enabling the piston rod to stop extending out, enabling a vortex flowmeter to transmit a flow value to an upper computer system, and enabling the upper computer system to calculate the elongation of an oil cylinder according to the ratio of the flow value to the cylinder diameter of a cylinder body to obtain a shield tail clearance value;
4) And after the upper computer system or the wireless remote controller receives the accumulated total flow numerical value T, calculating the extension length L = T/S of the piston rod, wherein S is the cylinder diameter of the cylinder body, and L is the measured shield tail clearance numerical value and is displayed through the upper computer system or the wireless remote controller.
The method for measuring the shield tail clearance is simple in steps, and can effectively solve the problems that a common shield tail clearance measuring device is low in measuring precision, easy to damage, unchangeable in installation, low in automation degree and the like on the premise that construction risk and efficiency of manually measuring the shield tail clearance are high.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the invention can not only improve the automation degree and the measurement precision of the automatic measuring device, prolong the service life and is easy to operate, but also can measure the minimum value and the true value of the shield tail clearance, so that the measured data can be fed back in real time without being influenced by shield tail flying dust and shield tail inner wall muddy water, the severe environment can be overcome, the shield tail clearance value can be accurately obtained at the first time, and the construction parameters can be timely adjusted, so that the segment assembling and forming quality can be ensured.
2. The mode that adopts the hydro-cylinder to stretch out directly contacts with the section of jurisdiction, measurement accuracy is high, can effectively guide shield tunnelling and section of jurisdiction construction of assembling, the cylinder liner adopts brass finish machining, effectively guarantee the wearability and the self-lubricity of cylinder liner, the piston rod stretches out to accomplish automatic retraction after measuring, guidance quality and life have been improved, the hydro-cylinder is sealed to adopt high pressure wear-resisting sealed, guarantee sealed reliability and measuring accuracy, simultaneously add the turbine flowmeter of high accuracy in the position of oil inlet, will transmit the flow numerical value and transmit to host computer system, host computer system is through the specific value between the bore of specific flow numerical value and cylinder body, calculate the concrete elongation of piston rod, reachs the concrete numerical value of shield tail clearance.
3. Stay tube and spacing design of taking turns, can make the slider remove along the guide slot, stability and reliability when improving the slider and removing, the pipeline of connecting oil inlet and oil-out simultaneously can pass through the stay tube and connect outside fuel feeding equipment, guarantee that measuring mechanism can the steady operation, reduce measuring error, the gyro wheel can reduce frictional force, after the slider removes to required position, drive the telescopic link through the pneumatic cylinder and stretch out, can extrude the lateral wall of guide slot, realize the fixed of slider.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of an automatic measuring device for shield tail clearance according to the present invention;
FIG. 2 is a schematic view of the automatic measuring device of the present invention;
FIG. 3 is a schematic view of an automatic measuring device according to the present invention;
FIG. 4 is a schematic view of the measuring mechanism according to the present invention;
FIG. 5 is a schematic view of the connection between the driving mechanism and the slider according to the present invention;
FIG. 6 is a schematic connection diagram of a spacing mechanism according to the present invention;
FIG. 7 is a schematic structural diagram of a wireless remote control according to the present invention;
FIG. 8 is a flow chart of the method for automatically measuring the gap between the shield tails according to the present invention.
In the figure: 1-automatic measuring device; 101-a slide block; 102-a support wheel; 103-gear; 104-supporting tube; 105-a spacing wheel; 106-a piston rod; 107-cylinder liner; 108-oil cylinder sealing; 109-a controller; 110-an oil inlet; 111-an oil outlet; 112-turbine flow meter; 113-flow display screen; 114-a line protection cartridge; 115-bevel gear set; 116-a drive motor; 117-wireless signal transceiver; 118-a cylinder; 119-a power supply module; 120-a contact sensor; 121-an annular groove; 122-a roller; 123-telescopic rod; 124-hydraulic cylinder;
2-shield tail; 201-an arc-shaped groove; 202-a guide groove; 203-a rack;
3-a wireless remote controller; 301-remote control display screen; 302-upper computer interlock key; 303-upper computer chain release key; 304-cylinder extend key; 305-cylinder retract key; 306-scram key.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solutions of the present invention, 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 derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
As shown in fig. 1 to 7, for the automatic gap measuring device for the shield tail 2 of the present invention, the automatic gap measuring device 1 is disposed on the inner wall of the shield tail 2 and is located in the gap formed between the shield tail 2 and the duct piece, at least one arc-shaped groove 201 is disposed on the shield tail 2, and two arc-shaped grooves 201 are preferably used in the present application. The length of the arc-shaped groove 201 is 2/3 of the length of the outer circumference of the shield tail 2, so that the automatic measuring device 1 can conveniently move along the arc-shaped groove 201, and the measuring requirements of gaps at different positions are met. The automatic measuring device 1 moves along the arc-shaped groove 201 to realize real-time measurement of gaps at different positions; through the design of above-mentioned structure, not only can improve automatic measuring device 1's degree of automation and measurement accuracy, increase of service life, easy operation, and can measure 2 interstitial minimum values and true values of shield tail, make measured data can feed back in real time, do not receive 2 raise dusts of shield tail and 2 inner walls muddy water of shield tail more influences, can overcome adverse circumstances, the very first time accurately acquires 2 clearance numerical values of shield tail, and in time adjust construction parameter, assemble shaping quality with the guarantee section of jurisdiction.
The measuring mechanism comprises a cylinder body 118, a piston rod 106, a controller 109 and a turbine flowmeter 112, the cylinder body 118 is arranged in a sliding block 101, a cylinder sleeve 107 is arranged in the cylinder body 118, the piston rod 106 is movably connected to the cylinder sleeve 107, an oil cylinder seal 108 is arranged between the piston rod 106 and the cylinder sleeve 107, the controller 109 is arranged on one side of the cylinder body 118, an oil inlet 110 and an oil outlet 111 are arranged on the other side of the cylinder body 118, the turbine flowmeter 112 is connected to the oil inlet 110, a flow display screen 113 is arranged on the turbine flowmeter 112, the turbine flowmeter 112 is connected with the controller 109 through a pipeline protection cylinder 114 and directly contacts with a duct piece in an oil cylinder extending mode, the measuring precision is high, shield tunneling and duct piece assembling construction can be effectively guided, the cylinder sleeve 107 is subjected to brass fine machining, the wear resistance and self-lubrication performance of the cylinder sleeve 107 are effectively guaranteed, the piston rod 106 automatically retracts after extending out and completing measurement, the guiding performance and the service life are improved, the oil cylinder seal 108 is subjected to high-pressure wear-resistant sealing, the sealing reliability and the measuring accuracy are guaranteed, meanwhile, the turbine flowmeter 112 is additionally arranged at the position of the oil inlet 110, a transmission flow value is transmitted to a system, the upper computer system, the specific ratio of the cylinder body system to the cylinder diameter of the piston rod 106 to the tail quantity of the piston rod 118, and the tail machine is calculated to obtain a specific value 2, and the specific value of the extension clearance of the piston rod 106.
The tip of piston rod 106 is equipped with contact sensor 120 for respond to touch signal, and feed back to controller 109, contact sensor 120's design, can make piston rod 106 release gently can, can produce the signal after the inner wall collision of contact sensor 120 and section of jurisdiction, control hydraulic oil through controller 109 and stop the input, can read corresponding data simultaneously, improve measuring precision greatly.
Be equipped with power module 119 and wireless signal transceiver 117 in the slider 101, power module 119 and wireless signal transceiver 117 all with controller 109 electric connection, power module 119 can adopt the battery to provide the electric energy, also can be through the wire external power source equipment of connection through stay tube 104, wireless signal transceiver 117 is used for data transmission and control, can use the wireless remote controller 3 transmission radio signal to the controller 109 of manual work, relieve the host computer chain or resume the host computer chain, and can do the control transmission signal control piston rod 106 of heat and stretch out or retract, use under convenient to overhaul and the special need.
The bottom of slider 101 is passed through actuating mechanism and is connected arc wall 201, actuating mechanism includes driving motor 116, bevel gear group 115, gear 103, rack 203 and supporting wheel 102, driving motor 116 is located slider 101, driving motor 116 passes through bevel gear group 115 and connects gear 103, gear 103 rotates the bottom of connecting at slider 101, rack 203 distributes along arc wall 201, gear 103 and rack 203 phase-match, supporting wheel 102 evenly distributed is on the bottom surface of slider 101, it is rotatory to drive bevel gear group 115 through driving motor 116, and then can drive gear 103 and rotate, reverse acting force through rack 203, can make slider 101 remove along arc wall 201, satisfy actual regulation needs, supporting wheel 102 can support slider 101, stability and reliability when improving slider 101 and remove.
The side face of the slider 101 is connected with the arc-shaped groove 201 through a limiting mechanism, the limiting mechanism comprises a supporting pipe 104, a limiting wheel 105 and a clamping assembly, the supporting pipe 104 is fixed on two sides of the slider 101, the limiting wheel 105 is fixed on the supporting pipe 104, an annular groove 121 is formed in the limiting wheel 105, guide grooves 202 are symmetrically formed in the inner wall of the arc-shaped groove 201, the guide grooves 202 are matched with the annular groove 121, a roller 122 is arranged on the annular groove 121, the roller 122 is supported on the guide grooves 202, the clamping assembly comprises a hydraulic cylinder 124 and a telescopic rod 123, the hydraulic cylinder 124 is arranged on the slider 101, the hydraulic cylinder 124 is connected to the limiting wheel 105 through a piston rod 106 and abuts against the side wall of the guide groove 202 through the limiting wheel 105, the supporting pipe 104 and the limiting wheel 105 are designed, the slider 101 can move along the guide grooves 202, stability and reliability of the slider 101 in moving are improved, meanwhile, a pipeline connecting an oil inlet 110 and an oil outlet 111 can be connected with external oil supply equipment through the supporting pipe 104, stable work of the measuring mechanism is guaranteed, measuring error is reduced, the roller 122 can reduce friction force, and after the slider 101 moves, and when the slider 101 moves to a required position, the slider 101 is moved, the sliding mechanism drives the telescopic rod 123 to extend out, the side wall of the telescopic rod 123 is extruded, and the side wall of the sliding roller 122 can be reduced, and the sliding of the sliding groove 202 is realized, and the slider 101 is fixed.
The automatic measuring device 1 further comprises a wireless remote controller 3, and a remote controller display screen 301, an upper computer interlocking key 302, an upper computer interlocking release key 303, a cylinder extending key 304, a cylinder retracting key 305 and an emergency stop key 306 are arranged on the wireless remote controller 3.
The measuring method of the automatic shield tail clearance measuring device (as shown in fig. 8) includes the following steps:
1) An interface of the automatic measuring device 1 is connected to an upper computer system of the shield machine through a PLC and is interlocked with the cutter head, so that the oil cylinder stretches out and draws back and the cutter head rotates synchronously;
2) Determining the measuring position of the automatic measuring device 1 according to the moving position of the shield tunneling machine, moving the automatic measuring device 1 to a required position along the arc-shaped groove 201 on the outer circumference of the shield tail 2 through a driving mechanism, and then fixing;
3) Then starting a measuring mechanism, driving a contact sensor 120 to move through a piston rod 106 of the measuring mechanism, enabling the contact sensor 120 to be in contact with a duct piece, generating a signal to be fed back to a controller 109, enabling the piston rod 106 to stop extending out, enabling a vortex flowmeter to transmit a flow value to an upper computer system, and enabling the upper computer system to calculate the elongation of an oil cylinder according to the ratio of the flow value to the cylinder diameter of a cylinder body 118 to obtain a shield tail 2 gap value;
4) After the upper computer system or the wireless remote controller 3 receives the accumulated total flow value T, the extension length L = T/S of the piston rod 106 is calculated, S is the cylinder pass of the cylinder body 118, L is the measured gap value of the shield tail 2, and the value is displayed through the upper computer system or the wireless remote controller 3.
The measuring method has simple steps, and can effectively solve the problems of low measuring precision, easy damage, unchanged installation, low automation degree and the like of a common shield tail 2 clearance measuring device on the premise of solving the problems of high risk and low efficiency of manual measurement of the shield tail 2 clearance construction.
The invention is controlled by two modes:
1. automatic control
1. When the shield tunneling machine is switched to an assembling mode, the upper computer system simultaneously transmits signals to the shield tail 2 clearance automatic measuring device 1, and a piston rod 106 embedded in a measuring mechanism on the inner wall of the shield tail 2 is controlled to automatically retract between the inner wall of the shield tail 2 and a duct piece;
2. when the rotation process of the cutter head of the shield machine is changed into the rotation stop state, the upper computer system simultaneously transmits signals to the shield tail 2 clearance automatic measuring device 1, a piston rod 106 embedded in a measuring mechanism on the inner wall of the shield tail 2 is controlled to automatically extend out between the inner wall of the shield tail 2 and a pipe piece, a turbine flowmeter 112 on an oil inlet 110 starts to accumulate and count, and a flow display screen 113 on the turbine flowmeter 112 displays instantaneous flow and accumulated flow values;
3. the piston rod 106 is fully extended until the piston rod abuts against the segment of the shield tail 2, so that the contact sensor 120 is in contact with the segment;
4. transmitting a total flow numerical value T recorded on a flow display screen 113 of a turbine flowmeter 112 on an oil inlet 110 of a hydraulic oil cylinder to a controller 109 of the shield tail 2 gap automatic measuring device 1 through a PLC connecting line pre-buried in a pipeline protection cylinder 114, and then transmitting the total flow numerical value T to an upper computer central system;
5. after receiving the accumulated total flow value T, the upper computer system calculates the extension length L = T/S of the piston rod 106 by combining the known cylinder diameter S of the cylinder body 118, wherein the length L is the measured shield tail 2 clearance value;
6. and the upper computer system displays the measured clearance value L of the shield tail 2 on a screen of the upper computer.
2. Manual control
1. A wireless signal transceiver 117 is arranged in the shield tail 2 gap automatic measuring device 1;
2. when the piston rod 106 needs to be manually controlled to extend and retract, the wireless remote controller 3 which is configured can be manually used for sending a wireless signal to the control system to be transmitted, and the linkage between the wireless remote controller and the cutter head is firstly released;
3. the oil cylinder extending key 304 is manually pressed down by using the wireless remote controller 3, the wireless remote controller 3 sends a wireless signal which is received by the controller 109 of the shield tail 2 clearance automatic measuring device 1, and the measuring system controls the piston rod 106 to extend after receiving the information;
4. the piston rod 106 is fully extended until the piston rod abuts against the segment of the shield tail 2, so that the contact sensor 120 is in contact with the segment;
5. transmitting a total flow numerical value T recorded on a flow display screen 113 of a hydraulic oil cylinder oil inlet 110 turbine flowmeter 112 during the extension of a piston rod 106 to a controller 109 of the shield tail 2 clearance automatic measuring device 1 through a PLC connecting line, transmitting a wireless signal to a wireless remote controller 3 by the controller 109, and after the wireless remote controller 3 receives the signal, calculating the extension length L = T/S of the piston rod 106 by combining a known cylinder body 118 bore S by a built-in calculation system, wherein the length L is the measured shield tail 2 clearance numerical value;
6. the wireless remote controller 3 displays the measured gap value L of the shield tail 2 on the remote controller display screen 301.
The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are all covered by the scope of the present invention.
Claims (10)
1. The utility model provides a shield tail clearance automatic measuring device which characterized in that: the automatic measuring device is arranged on the inner wall of the shield tail and is positioned in a gap formed between the shield tail and the duct piece, at least one arc-shaped groove is arranged on the shield tail, and the automatic measuring device moves along the arc-shaped groove to realize real-time measurement of the gaps at different positions.
2. The automatic shield tail clearance measuring device according to claim 1, characterized in that: the length of the arc-shaped groove is 2/3 of the length of the outer circumference of the shield tail.
3. The automatic shield tail clearance measuring device according to claim 1, characterized in that: the automatic measuring device comprises a sliding block and a measuring mechanism, wherein the measuring mechanism is arranged on the sliding block, and the sliding block is matched with the arc-shaped groove and moves along the arc-shaped groove.
4. The automatic shield tail clearance measuring device according to claim 3, wherein: the measuring mechanism comprises a cylinder body, a piston rod, a controller and a turbine flowmeter, the cylinder body is arranged in the sliding block, a cylinder sleeve is arranged in the cylinder body, the piston rod is movably connected to the cylinder sleeve, an oil cylinder seal is arranged between the piston rod and the cylinder sleeve, the controller is arranged on one side of the cylinder body, an oil inlet and an oil outlet are formed in the other side of the cylinder body, the turbine flowmeter is connected to the oil inlet, a flow display screen is arranged on the turbine flowmeter, and the turbine flowmeter is connected with the controller through a pipeline protection cylinder.
5. The automatic shield tail clearance measuring device according to claim 4, wherein: and a contact sensor is arranged at the end part of the piston rod and used for sensing a touch signal and feeding back the touch signal to the controller.
6. The automatic shield tail clearance measuring device according to claim 4, characterized in that: be equipped with power module and wireless signal transceiver in the slider, power module with the wireless signal transceiver all with controller electric connection.
7. The automatic shield tail clearance measuring device according to claim 3, characterized in that: the bottom of the sliding block is connected with the arc-shaped groove through a driving mechanism, the driving mechanism comprises a driving motor, a bevel gear set, a gear, a rack and supporting wheels, the driving motor is located in the sliding block and is connected with the gear through the bevel gear set, the gear is rotatably connected to the bottom of the sliding block, the rack is distributed along the arc-shaped groove, the gear is matched with the rack, and the supporting wheels are uniformly distributed on the bottom surface of the sliding block.
8. The automatic shield tail clearance measuring device according to claim 3, wherein: the side of slider is connected through stop gear the arc wall, stop gear includes stay tube, spacing round and clamping component, the stay tube is fixed in the both sides of slider, spacing round is fixed in on the stay tube, spacing round is equipped with the ring channel, the symmetry is equipped with the guide slot on the inner wall of arc wall, the guide slot with the ring channel phase-match, be equipped with the gyro wheel on the ring channel, the gyro wheel support in the guide slot, clamping component includes pneumatic cylinder and telescopic link, the pneumatic cylinder is located on the slider, the pneumatic cylinder passes through the piston rod is connected to spacing round is gone up, and runs through spacing round supports the lateral wall of guide slot.
9. The automatic shield tail clearance measuring device according to claim 1, characterized in that: the automatic measuring device further comprises a wireless remote controller, and a remote controller display screen, an upper computer interlocking key, an upper computer interlocking release key, an oil cylinder extending key, an oil cylinder retracting key and an emergency stop key are arranged on the wireless remote controller.
10. The method for measuring the shield tail clearance automatic measuring device according to any one of claims 1 to 9, characterized by comprising the following steps:
1) Connecting an interface of the automatic measuring device to an upper computer system of the shield tunneling machine through a PLC (programmable logic controller), and interlocking the interface with the cutter head to enable the expansion and contraction of the oil cylinder to be synchronous with the rotation of the cutter head;
2) Determining the measuring position of the automatic measuring device according to the moving position of the shield tunneling machine, moving the automatic measuring device to a required position along an arc-shaped groove on the outer circumference of the shield tail through a driving mechanism, and then fixing;
3) Then starting a measuring mechanism, driving a contact sensor to move through a piston rod of the measuring mechanism, enabling the contact sensor to be in contact with a duct piece, generating a signal to be fed back to a controller, enabling the piston rod to stop extending out, enabling a vortex flowmeter to transmit a flow value to an upper computer system, and enabling the upper computer system to calculate the elongation of an oil cylinder according to the ratio of the flow value to the cylinder diameter of a cylinder body to obtain a shield tail clearance value;
4) And after the upper computer system or the wireless remote controller receives the accumulated total flow numerical value T, calculating the extension length L = T/S of the piston rod, wherein S is the cylinder diameter of the cylinder body, and L is the measured shield tail clearance numerical value and is displayed through the upper computer system or the wireless remote controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210941827.7A CN115307520A (en) | 2022-08-08 | 2022-08-08 | Automatic shield tail clearance measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210941827.7A CN115307520A (en) | 2022-08-08 | 2022-08-08 | Automatic shield tail clearance measuring device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115307520A true CN115307520A (en) | 2022-11-08 |
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ID=83861108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210941827.7A Pending CN115307520A (en) | 2022-08-08 | 2022-08-08 | Automatic shield tail clearance measuring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115307520A (en) |
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2022
- 2022-08-08 CN CN202210941827.7A patent/CN115307520A/en active Pending
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