Accurate detection device for shield to pass through existing underground diaphragm wall

Abstract

According to the accurate detection device for the shield to penetrate through the existing underground diaphragm wall, the rear portion of a positioning sleeve is sleeved with the front portion of a front end spring, the positioning sleeve is embedded into a front hole of a telescopic rod, and the rear portion of the front end spring is fixed to the front portion of a sliding pointer; the rear portion of the contact rod penetrates through the positioning sleeve, the front end spring and the sliding pointer, the rear portion of the contact rod is fixed to the front portion of the trigger, and the sliding pointer can slide on the contact rod. The rear part of the sliding pointer is connected with the front part of the trigger through a slide fastener; the other side of the sliding pointer is sleeved with a measuring coil which is fixed to the inner wall of the telescopic rod. The rear portion of the trigger is fixed to the front portion of the rear-end spring, and the rear portion of the rear-end spring is sleeved with the restorer which is fixed to the bottom of the telescopic rod. The driver is fixed to the inner wall of the protection shell and connected with the telescopic rod shaft hub. The protective shell is sleeved with the telescopic shaft, the telescopic shaft is driven by the driver, the telescopic shaft can slide in the protective shell, and the protective shell is fixed to a shield cutter head. According to the utility model, the construction safety and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of shield engineering, and relates to a shield crossing existing underground continuous wall precision detection device, which is suitable for shield crossing existing underground continuous wall construction. BACKGROUND

[0002] When the shield crosses the existing underground continuous wall, the relative distance between the shield machine and the underground continuous wall is difficult to measure accurately. This uncertainty makes it difficult to accurately control the tunneling speed of the shield machine, which may cause the shield machine to contact the underground continuous wall at too high a speed, thereby causing structural damage to the underground continuous wall or unnecessary vibration to the upper structure. In addition, the material strength of the underground continuous wall is also crucial to shield construction. If the material strength is too high, the shield machine may not be able to tunnel smoothly, resulting in a "stuck knife" phenomenon. This not only hinders the normal operation of the shield machine, but also may cause damage to the equipment, thereby increasing the construction cost and time. The existing shield crossing existing underground continuous wall construction technology has the following shortcomings: (1) unable to accurately detect the distance between the shield machine and the existing underground continuous wall; (2) unable to effectively analyze the material strength of the existing underground continuous wall; (3) the detection device cannot be installed on the shield cutterhead, making it extremely inconvenient to use. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the utility model provides a shield crossing existing underground continuous wall precision detection device, which realizes accurate detection of the distance between the shield machine and the underground continuous wall and detection of the material strength of the underground continuous wall, thereby improving the safety and efficiency of construction.

[0004] The utility model solves the technical problems by adopting the following technical scheme:

[0005] A kind of shield crossing existing underground continuous wall precision detection device, including contact lever, positioning sleeve, front end spring;Sliding pointer, trigger, reset spring, restorer, measuring coil, driver, telescopic rod, protective shell, cable adapter and shield cutter, the rear part of the positioning sleeve is sleeved with the front part of front end spring, the positioning sleeve is embedded in the front hole of telescopic rod, the rear part of front end spring is fixed in the front part of sliding pointer;The rear part of contact lever passes through positioning sleeve, front end spring and sliding pointer, the rear part of contact lever is fixed in the front part of trigger, and sliding pointer can slide on the contact lever;The rear part of sliding pointer is connected with the front part of trigger by sliding buckle, when sliding buckle is triggered, sliding pointer is separated from trigger;The other side of sliding pointer is sleeved with measuring coil, and measuring coil is fixed in the inner wall of telescopic rod, and measuring coil is connected with cable adapter by wire;The rear part of trigger is fixed in the front part of rear end spring, the rear part of rear end spring is sleeved with restorer, and restorer is fixed in the bottom of telescopic rod, and restorer is connected with cable adapter by wire;Driver is fixed in the inner wall of protective shell, and driver is connected with telescopic rod hub, and synchronous transmission can be carried out, and driver is connected with cable adapter by wire;The telescopic shaft is sleeved with protective shell, and telescopic shaft is driven by driver, and telescopic shaft can slide in the protective shell, and the protective shell is fixed on shield cutter.

[0006] Further, the contact lever includes carbonization depth probe and center guide rod, the front part of the center guide rod is located in the rear part of the contact lever, and the carbonization depth probe is located in the front part of the contact lever;The center guide rod is sleeved with front end spring and pointer counterweight, and the rear part of the center guide rod is fixed in the front part of trigger counterweight.

[0007] Further, the sliding pointer includes pointer counterweight and variable resistance probe, the variable resistance probe is fixed on the pointer counterweight, the variable resistance probe is sleeved on the measuring coil, the front part of the pointer counterweight is fixed in the rear part of the front end spring, and the rear part of the pointer counterweight is buckled into the sliding switch of the trigger.

[0008] Further, the trigger includes trigger counterweight, sliding switch, N-pole magnet and S-pole magnet, the S-pole magnet is fixed on the trigger counterweight, the N-pole magnet is fixed on the sliding switch, the N-pole magnet is connected with the S-pole magnet by magnetic force, the rear part of the trigger counterweight is fixed in the front part of the rear end spring, the rear part of the sliding switch can be connected with reset switch, and the pointer counterweight is separated when the sliding switch is buckled into reset switch.

[0009] Preferably, the reset device comprises a reset switch, a reset switch control cable and a reset spring receiving slot, the reset switch is installed inside the reset device and aligned with the trigger, the reset spring receiving slot is slotted along the edge of the reset device, the reset switch control cable is embedded in the anti-falling bottom cover, the reset device is fixed on the anti-falling bottom cover, the reset spring receiving slot is sleeved with the rear spring, and the reset switch control cable is connected with the cable adapter through the wire.

[0010] More preferably, the driver comprises a driver transmission shaft and a driver motor, the driver transmission shaft is connected with the driver motor through a shaft coupling, the driver motor is fixed on the inner wall of the protection shell, and the driver transmission shaft is hub-connected with the telescopic rod transmission shaft for synchronous transmission.

[0011] More preferably, the telescopic rod comprises a telescopic rod transmission shaft and an anti-falling bottom cover, the anti-falling bottom cover is fixed at the bottom of the telescopic rod, the telescopic rod transmission shaft is formed by engraving the telescopic rod, and the anti-falling bottom cover is nested in the protection shell to prevent the telescopic rod from falling off.

[0012] The protection shell comprises a detachable connecting arm and a fixed connecting arm, the detachable connecting arm is nested on the outer wall of the protection shell, the fixed connecting arm is integrally formed with the protection shell, and the detachable connecting arm and the fixed connecting arm are both nested in the center blade cartridge.

[0013] The shield cutter head comprises a center blade cartridge, a roller cutter and a peripheral blade cartridge, the center blade cartridge and the peripheral blade cartridge are both arranged on the shield cutter head, and the roller cutter is nested on the peripheral blade cartridge.

[0014] The utility model discloses a shield crossing existing underground continuous wall precision detection device can accurately measure the distance between shield tunneling machine and existing underground building and detect the material strength of underground continuous wall. The device has the following advantages: (1) can measure the distance between shield tunneling machine and existing underground continuous wall, and the measurement precision is high, (2) can detect the material strength of underground continuous wall, (3) can be installed on the shield cutter head, does not influence shield tunneling, and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the sectional view of shield crossing existing underground continuous wall precision detection device.

[0016] Figure 2 It is the left view of shield crossing existing underground continuous wall precision detection device.

[0017] Figure 3 It is the plan view of shield crossing existing underground continuous wall precision detection device.

[0018] Figure 4 It is the schematic diagram of sliding pointer.

[0019] Figure 5 is a schematic view of the trigger.

[0020] Figure 6 is a schematic view of the contact rod.

[0021] Figure 7 is a schematic view of the reset.

[0022] Figure 8 is a schematic view of the shield cutter.

[0023] The reference signs are: 1. contact rod; 1-1. carbonization depth probe; 1-2. center guide rod; 2. positioning sleeve; 2-1. front end spring fixing groove; 3. front end spring; 4. sliding pointer; 4-1. pointer counterweight; 4-2. variable resistance probe; 5. trigger; 5-1. trigger counterweight; 5-2. sliding switch; 5-3. N pole magnet; 5-4. S pole magnet; 6. reset spring; 7. reset; 7-1. reset switch; 7-2. reset switch control cable; 7-3. reset spring receiving groove; 8. measuring coil; 8-1. variable resistance coil; 8-2. coil wire; 9. driver; 9-1. driver transmission shaft; 9-2. driver motor; 10. telescopic rod; 10-1. telescopic rod transmission shaft; 10-2. anti-falling bottom cover; 11. protective shell; 11-1. detachable connecting arm; 11-2. fixed connecting arm; 12. cable adapter; 13. shield cutter; 13-1. center blade bin; 13-2. roller cutter; 13-3. peripheral blade bin. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings.

[0025] Refer to Figures 1-8A kind of shield crossing existing underground continuous wall precision detection device, including contact lever 1, positioning sleeve 2, front end spring 3;Sliding pointer 4, trigger 5, reset spring 6, restorer 7, measuring coil 8, driver 9, telescopic rod 10, protective shell 11, cable adapter 12 and shield cutter 13, the rear part of the positioning sleeve 2 is wrapped in the front part of front end spring 3, the positioning sleeve is embedded in the front hole of telescopic rod 10, the rear part of front end spring 3 is welded in the front part of sliding pointer 4;The rear part of contact lever 1 passes through positioning sleeve, front end spring and sliding pointer, the rear part of contact lever 1 is welded in the front part of trigger 5, and sliding pointer 4 can slide on contact lever 1;The rear part of sliding pointer 4 is connected with the front part of trigger 5 by sliding buckle, when the sliding buckle is triggered, sliding pointer 4 is separated from trigger 5;The other side of sliding pointer 4 is wrapped in measuring coil 8, and measuring coil 8 is fixed on the inner wall of telescopic rod 10, and measuring coil 8 is connected with cable adapter 12 by wire;The rear part of trigger 5 is welded with the front part of rear end spring 6, the rear part of rear end spring 6 is wrapped in restorer 7, and restorer 7 is fixed on the bottom of telescopic rod 10, and restorer 7 is connected with cable adapter 12 by wire;Driver 9 is fixed on the inner wall of protective shell 11, and driver 9 is connected with the shaft hub of telescopic rod 10, can be synchronous transmission, and driver 9 is connected with cable adapter 12 by wire;Protective shell 11 is wrapped in telescopic shaft 10, telescopic shaft 10 is driven by driver 9, and telescopic shaft 10 can slide in protective shell 11, and protective shell 11 is fixed on shield cutter 13.

[0026] The contact lever 1 includes carbonization depth probe 1-1 and center guide rod 1-2, the front part of the center guide rod 1-2 is located in the rear part of the contact lever, and the carbonization depth probe 1-1 is located in the front part of the contact lever;The center guide rod 1-2 is wrapped in front end spring 3 and pointer counterweight 4-1, and the rear part of the center guide rod 1-2 is welded with the front part of trigger counterweight 5-1.

[0027] The sliding pointer 4 includes pointer counterweight 4-1 and variable resistance probe 4-2, the variable resistance probe 4-1 is fixed on the pointer counterweight 4-1, the variable resistance probe 4-2 is wrapped in measuring coil 8, the front part of the pointer counterweight 4-1 is welded with the rear part of front end spring 3, and the rear part of the pointer counterweight 4-1 is buckled into the sliding switch 5-2 of the trigger 5.

[0028] The trigger 5 includes trigger counterweight 5-1, slide switch 5-2, N pole magnet 5-3 and S pole magnet 5-4, S pole magnet 5-4 is fixed on trigger counterweight 5-1, N pole magnet 5-3 is fixed on slide switch 5-2, N pole magnet 5-3 is connected with S pole magnet 5-4 through magnetic force, the rear part of trigger counterweight 5-1 is welded with the front part of rear end spring 6, the rear part of slide switch 5-2 can be connected with reset switch 7-1, the slide switch 5-2 will cause the trigger counterweight 5-1 to be separated when being buckled into reset switch 7-1.

[0029] The resetter 7 includes reset switch 7-1, reset switch control cable 7-2 and reset spring receiving slot 7-3, the reset switch 7-1 is installed inside the resetter and is aligned with the trigger 5, the reset spring receiving slot 7-3 is slotted along the edge of the resetter, the reset switch control cable 7-2 is embedded in anti-falling bottom cover 10-2, the resetter 7 is fixed on anti-falling bottom cover 10-2, the reset spring receiving slot 7-3 is sleeved with rear end spring 6, the reset switch control cable 7-2 is connected with cable adapter 12 through wire.

[0030] The driver 9 includes driver transmission shaft 9-1 and driver motor 9-2, the driver transmission shaft 9-1 is connected with the driver motor 9-2 through coupling, the driver motor 9-2 is fixed on the inner wall of protection shell 11, the driver transmission shaft 9-1 is hub connected with telescopic rod transmission shaft 10-1, and synchronous transmission can be realized.

[0031] The telescopic rod 10 includes telescopic rod transmission shaft 10-1 and anti-falling bottom cover 10-2, the anti-falling bottom cover 10-2 is welded at the bottom of the telescopic rod, the telescopic rod transmission shaft 10-1 is formed by engraving the telescopic rod, and the anti-falling bottom cover 10-2 is nested in protection shell 11 to prevent the telescopic rod from falling off.

[0032] The protection shell 11 includes detachable connecting arm 11-1 and fixed connecting arm 11-2, the detachable connecting arm 11-1 is nested in the outer wall of the protection shell 11, and the fixed connecting arm 11-2 is integrally formed with the protection shell 11, both the detachable connecting arm 11-1 and the fixed connecting arm 11-2 are nested in center blade cartridge 13-1.

[0033] The shield cutterhead 13 includes center blade cartridge 13-1, roller cutter 13-2 and peripheral blade cartridge 13-3, both the center blade cartridge 13-1 and the peripheral blade cartridge 13-3 are erected on the shield cutterhead, and the roller cutter 13-2 is nested on the peripheral blade cartridge 13-3.

[0034] The shield tunnel of a certain city subway line No. 3 has a diameter of 6 meters and a buried depth of 10 meters, and the line penetrates a certain operating subway station of line No. 1. The shield construction needs to pass through the underground continuous wall of the existing subway station. In order to reduce the impact of the shield machine contacting the underground continuous wall on the operation of the station and the driving of the subway, the shield passing through the existing underground continuous wall precision detection device provided by the application is used to accurately detect the contact distance, and the shield tunneling speed and cutter head rotating speed are adjusted in advance, so as to reduce the impact when contacting. At the same time, the device detects the material strength of the continuous wall, preventing equipment damage and construction delay caused by the shield "knife sticking".

[0035] The implementation scheme of the embodiment is:

[0036] 1) Install the contact rod assembly: install the carbonization depth probe 1-1 at the front end of the contact rod 1, install the center guide rod 1-2 at the rear end of the contact rod 1, and then create the connection of the front end spring 3 and the sliding pointer 4;

[0037] 2) Install the trigger assembly: install the trigger 5 at the end of the center guide rod 1-2, assemble the sliding switch 5-2, the N-pole magnet 5-3 and the S-pole magnet 5-4, and then create the connection of the trigger 5 and the sliding pointer 4 by using the sliding switch 5-2, and create the connection of the trigger 5 and the reset spring 6;

[0038] 3) Install the resetter assembly: install the reset switch 7-1 on the resetter 7, which can be controlled through the cable adapter 12, install the resetter 7 on the anti-falling bottom cover 10-2, and then create the connection of the reset spring 6 and the reset spring receiving slot 7-3;

[0039] 4) Install the measuring coil 8 on the inner wall of the telescopic rod 10, and then create the connection of the variable resistance probe 4-2 and the variable resistance coil 8-1;

[0040] 5) Install the telescopic rod assembly: install the telescopic rod transmission shaft 10-1 on the outer wall of the telescopic rod 10 with an L pitch, install the positioning sleeve 2 at the front end of the telescopic rod 10, and then install the assembled contact rod assembly, trigger assembly and resetter assembly into the telescopic rod 10;

[0041] 6) Create the connection of the front end spring 3 and the front end spring fixing slot 2-1, and then install the anti-falling bottom cover 10-2;

[0042] 7) Assemble the protection shell 11: install the driver 9 in the preset slot of the protection shell 11, then install the telescopic rod assembly into the protection shell 11, and create the connection of the driver transmission shaft 9-1 and the telescopic rod transmission shaft 10-1;

[0043] 8) Assemble the shield cutterhead 13: install the cutter 13-2 in the blade pocket of the shield cutterhead 13. Install the fixed connecting arm 11-2 in the center blade pocket 13-1, and fix the protective shell 11 through the detachable connecting arm 11-1 after adjusting the orientation;

[0044] 9) Lead wires and cables of the reset switch 7-1, the carbonation depth probe 1-1, the variable resistance coil 8-1 and the driver motor 9-1 are led out to the controller and processor through the cable adapter 12;

[0045] 10) During the shield tunneling process, the telescopic rod 10 is stored in the protective shell 11. The cutter 13-2 cuts the soil, and the shield cutterhead continuously advances;

[0046] 11) According to the advancing distance, when the shield machine approaches the underground continuous wall, the driver motor 9-2 is started to rotate the driver transmission shaft 9-1, which drives the telescopic rod transmission shaft 10-1 to rotate, continuously pushing the telescopic rod 10 out of the protective shell 11;

[0047] 12) After the contact rod 1 contacts the underground continuous wall, it is compressed, the front end spring 3 is stretched, and the reset spring 6 is compressed until the trigger 5 contacts the reset 7; then the driver motor 9-1 continues to work to insert the carbonation depth probe 1-1 into the carbonation layer of the concrete, and measure the carbonation depth of the underground continuous wall concrete;

[0048] 13) Record the total number of revolutions of the driver transmission shaft 9-1 in steps 10) and 11), and calculate the advancing distance of the telescopic rod 10 (i.e. the distance between the shield machine and the underground continuous wall) according to the relationship between the number of revolutions, the pitch and the advancing distance.

[0049] The advancing distance = n x L x i,

[0050] Where n is the total number of revolutions of the driver transmission shaft 9-1, i is the transmission ratio, and L is the pitch;

[0051] 14) When the slide switch 5-2 contacts the reset switch 7-1, it causes the slide switch 5-2 to slide down, releasing the slide pointer 4. Then the front end spring 3 contracts, pulling the slide pointer 4 to hit the contact rod 1; the slide pointer 4 rebounds after hitting, and according to the position of the variable resistance probe 4-2 on the variable resistance coil 8-1, the rebound value is output;

[0052] 15) Start the driver motor 9-1 in the opposite direction to recover the telescopic shaft 10. Then open the reset switch 7-1 to make the rear end spring 6 rebound;

[0053] 16) The rear end spring 6 pushes the trigger 5 and the contact rod 1 to reset, making the trigger 5 contact the slide pointer 4; the slide switch 5-2 slides down and is restored to connect the trigger 5 and the slide pointer 4 under the magnetic force of the N-pole magnet 5-3 and the S-pole magnet 5-4;

[0054] 17) Repeat steps 11)-16), according to the distance of each detected underground continuous wall, adjust the shield tunneling speed step by step;

[0055] 18) According to the rebound value and carbonization depth obtained each time, calculate the average rebound value and average carbonization depth, and obtain the material strength of the underground continuous wall through table lookup.

[0056] The content described in the embodiments of the specification is only a list of implementation forms of the utility model concept, and is only for illustrative purposes. The protection scope of the utility model should not be regarded as being limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art according to the utility model concept.

Claims

1. A precision detection device for shield tunneling through an existing underground continuous wall, characterized in that, The device comprises a contact rod, a positioning sleeve, a front end spring, a sliding pointer, a trigger, a reset spring, a resetter, a measuring coil, a driver, a telescopic rod, a protective shell, a cable adapter and a shield cutter, the rear part of the positioning sleeve is sleeved with the front part of the front end spring, the positioning sleeve is embedded in the front hole of the telescopic rod, and the rear part of the front end spring is fixed on the front part of the sliding pointer; the rear part of the contact rod passes through the positioning sleeve, the front end spring and the sliding pointer, and the rear part of the contact rod is fixed on the front part of the trigger, and the sliding pointer can slide on the contact rod; the rear part of the sliding pointer is connected with the front part of the trigger through a sliding buckle, when the sliding buckle is triggered, the sliding pointer is separated from the trigger; the other side of the sliding pointer is sleeved with the measuring coil, the measuring coil is fixed on the inner wall of the telescopic rod, and the measuring coil is connected with the cable adapter through a wire; the rear part of the trigger is fixed on the front part of the rear end spring, the rear part of the rear end spring is sleeved with the resetter, the resetter is fixed on the bottom of the telescopic rod, and the resetter is connected with the cable adapter through a wire; the driver is fixed on the inner wall of the protective shell, the driver is connected with the shaft hub of the telescopic rod and can be synchronously driven, and the driver is connected with the cable adapter through a wire; the telescopic shaft is sleeved with the protective shell, the telescopic shaft is driven by the driver, the telescopic shaft can slide in the protective shell, and the protective shell is fixed on the shield cutter.

2. The shield tunneling existing underground continuous wall precise detection device according to claim 1, wherein, The contact rod comprises a carbonization depth probe and a center guide rod, the front part of the center guide rod is located at the rear part of the contact rod, and the carbonization depth probe is located at the front part of the contact rod; the center guide rod is sleeved with the front end spring and a pointer counterweight, and the rear part of the center guide rod is fixed on the front part of the trigger counterweight.

3. The shield tunneling existing underground continuous wall precise detection device according to claim 1 or 2, characterized in that, The sliding pointer comprises a pointer counterweight and a variable resistance probe, the variable resistance probe is fixed on the pointer counterweight, the variable resistance probe is sleeved on the measuring coil, the front part of the pointer counterweight is fixed on the rear part of the front end spring, and the rear part of the pointer counterweight is buckled into the sliding switch of the trigger.

4. The shield crossing existing underground continuous wall precision detection device of claim 2, wherein, The trigger comprises a trigger counterweight, a sliding switch, an N-pole magnet and an S-pole magnet, the S-pole magnet is fixed on the trigger counterweight, the N-pole magnet is fixed on the sliding switch, the N-pole magnet is connected with the S-pole magnet through magnetic force, the rear part of the trigger counterweight is fixed on the front part of the rear end spring, the rear part of the sliding switch can be connected with a reset switch, and when the sliding switch is buckled into the reset switch, the pointer counterweight is separated.

5. The shield tunneling existing underground continuous wall precise detection device according to claim 1 or 2, characterized in that, The resetter comprises a reset switch, a reset switch control cable and a reset spring receiving groove, the reset switch is installed in the resetter and is aligned with the trigger, the reset spring receiving groove is slotted along the edge of the resetter, the reset switch control cable is pre-buried in the anti-falling bottom cover, the resetter is fixed on the anti-falling bottom cover, the reset spring receiving groove is sleeved with the rear end spring, and the reset switch control cable is connected with the cable adapter through a wire.

6. The shield tunneling existing underground continuous wall precise detection device according to claim 1 or 2, characterized in that, The driver comprises a driver transmission shaft and a driver motor, the driver transmission shaft is connected with the driver motor through a shaft coupling, the driver motor is fixed on the inner wall of the protective shell, and the driver transmission shaft is connected with the telescopic rod transmission shaft through a shaft hub and can be synchronously driven.

7. The shield tunneling existing underground continuous wall precise detection device according to claim 1 or 2, characterized in that, The telescopic rod comprises a telescopic rod transmission shaft and a anti-falling bottom cover, the anti-falling bottom cover is fixed at the bottom of the telescopic rod, the telescopic rod transmission shaft is formed by engraving the telescopic rod, and the anti-falling bottom cover is nested in the protective shell to prevent the telescopic rod from falling off.

8. The shield tunneling existing underground continuous wall precise detection device according to claim 1 or 2, characterized in that, The protective shell comprises detachable connecting arms and fixed connecting arms, the detachable connecting arms are nested on the outer wall of the protective shell, the fixed connecting arms are integrally formed with the protective shell, and the detachable connecting arms and the fixed connecting arms are both nested in the center blade bin.

9. The shield tunneling existing underground continuous wall precise detection device according to claim 1 or 2, characterized in that, The shield cutter head comprises a center blade bin, a roller cutter and a peripheral blade bin, the center blade bin and the peripheral blade bin are both arranged on the shield cutter head, and the roller cutter is nested on the peripheral blade bin.

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