CN205349344U - A model test device that is arranged in sand simulation shield structure machine to tunnel - Google Patents
A model test device that is arranged in sand simulation shield structure machine to tunnel Download PDFInfo
- Publication number
- CN205349344U CN205349344U CN201620094741.5U CN201620094741U CN205349344U CN 205349344 U CN205349344 U CN 205349344U CN 201620094741 U CN201620094741 U CN 201620094741U CN 205349344 U CN205349344 U CN 205349344U
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Abstract
The utility model discloses a model test device that is arranged in sand simulation shield structure machine to tunnel, it constructs the outer steel cylinder of machine, an excavation face cutting unit, sediment outflow unit, model shield structure set -top and advances unit and pressure monitoring unit to construct quick -witted support frame, shield including the shield, the shield constructs the outer steel cylinder of machine to be fixed on the shield constructs quick -witted support frame, is equipped with shield head and model tunnel in the outer steel cylinder of shield structure machine, what the pressure monitoring unit included that the shield constructs that the aircraft nose seals pressure sensor and shield structure tail portion in the storehouse draws the pressure sensor, the sediment outflow unit includes infinitely variable dust catcher, PVC breathing pipe and PVC intake pipe, interconnect's infinitely variable dust catcher, PVC breathing pipe, shield structure aircraft nose seal storehouse and the formation of a PVC intake pipe gas circulation route that is used for the sediment outflow in proper order. The utility model discloses a sediment outflow is carried out to the dust catcher principle, has saved the operating space of model shield structure built -in portion, monitors the condition created for the shield constructs quick -witted rear model tunnel internal layout sensor, and its sediment outflow method is more direct, effective, reliable, the test operation of being convenient for.
Description
Technical field
This utility model relates to a kind of assay device, particularly relates to model test apparatus and the test method of a kind of energy artificial actual shield machine driving.
Background technology
In recent years, along with the development of city underground cause, balancing earth-pressure shielding machine obtains in the construction process of transit tunnel and is increasingly widely applied.For the Influencing Mechanism being apparent from the actual duty of shield machine and shield machine digging process to surrounding enviroment, there are many scholars to devise model shield machine both at home and abroad, and carried out model shield experimental study.But, these model equipments substantially all adopt drilling rod to carry out sediment outflow, and its operation principle can be summarized simply as follows and by external motive device, the drilling rod within steel cylinder be rotated, thus slowly being taken out of from steel cylinder by sand.Being limited in that of above-mentioned assay device: drill pipe diameter should be slightly less than outer steel cylinder internal diameter, and (otherwise sand can not smoothly along with steel drum discharged by drilling rod, efficiency is substantially reduced), so drilling rod can take the internal substantial amounts of space of steel cylinder, it is impossible to realizes the placement sensor of the model tunnel internal at shield machine rear and is monitored.Simultaneously, adopt major diameter drilling rod model shielding machine and actual shield machine be configured with certain discrepancy (in actual shield machine responsible carry native conveying worm compared with shield machine shell sizes less, and be normally at bottom soil storehouse), and result of the test will certainly be impacted by this discrepancy.
Utility model content
For above-mentioned prior art, this utility model provides a kind of model test apparatus for simulating shield machine driving in sand, simulates effective, simple to operate and test method is reliable.
In order to solve above-mentioned technical problem, a kind of model test apparatus for simulating shield driving in sand that the utility model proposes, including shield machine bracing frame, the outer steel cylinder of shield machine, excavation face cutting unit, sediment outflow unit, model shielding machine jacking unit and pressure monitoring unit；The outer steel cylinder of described shield machine is fixed on described shield machine bracing frame, and the front end of the outer steel cylinder of described shield machine is provided with detachable shield head, and described detachable shield head includes shield head and closes storehouse；The rear being positioned at described detachable shield head in the outer steel cylinder of described shield machine is provided with model tunnel；Described excavation face cutting unit includes being arranged on described shield head and closes the pulpous state blade in storehouse, is arranged on the servomotor of shield machine afterbody, and described servomotor imparts power to described pulpous state blade by drive link；Described model shielding machine jacking unit is Three Degree Of Freedom jacking platform；Described pressure monitoring unit includes being arranged on shield head and closes the pressure transducer in storehouse and be fixed on the tension-compression sensor of the outer steel cylinder afterbody of shield machine；Described sediment outflow unit includes infinitely variable speeds vacuum cleaner, PVC suction nozzle and PVC air inlet pipe；The air entry of described infinitely variable speeds vacuum cleaner is closed storehouse by described PVC suction nozzle with described shield head and is connected；One end of described PVC air inlet pipe is closed storehouse with described shield head and is connected, the other end of described PVC air inlet pipe carries out QI invigorating with atmosphere for closing storehouse for shield head, and interconnective infinitely variable speeds vacuum cleaner, PVC suction nozzle, shield head close storehouse and the PVC air inlet pipe formation one gas peripheral passage for sediment outflow successively.
Further, this utility model is for simulating the model test apparatus of shield driving in sand, wherein, described Three Degree Of Freedom jacking platform includes vertical direction linear guide poles, direction of propulsion line slideway and translation direction line slideway；Described shield machine bracing frame is arranged on described direction of propulsion line slideway；Between described shield machine bracing frame with described direction of propulsion line slideway, between described direction of propulsion line slideway and described vertical direction linear guide poles, it is connected respectively through moving sets between bottom and the described translation direction line slideway of described vertical direction linear guide poles；Described shield machine bracing frame has the Three Degree Of Freedom moved along translation direction, vertical direction and direction of propulsion；The driving force of described Three Degree Of Freedom jacking platform is electric or hand.
Pressure transducer in described pressure monitoring unit closes the soil pressure in storehouse for monitoring shield head described in shield jack-in process, to adjust the air-breathing speed of infinitely variable speeds vacuum cleaner；Described tension-compression sensor is used for monitoring in shield machine jack-in process, is applied to total thrust of shield machine on direction of propulsion, and this thrust deducts shield head and closes the frictional force that the summation of soil pressure in storehouse is in the outer steel cylinder of shield machine and model casing between sand.
Compared with prior art, the beneficial effects of the utility model are:
Forefathers copy shield machine operation principle in kind in shield model test, have employed the thing of drilling rod class to replace conveying worm to carry out sediment outflow work, but drilling rod itself takes up room just big, also needing to extra power set makes it rotate, owing in model shielding machine fuselage, available space itself is just narrow and small, this makes the design of model shielding machine receive very big limitation.This utility model is for this special particulate structure of sand, the mode of vacuum cleaner and the combination of PVC airway that have employed carries out sediment outflow, save the working place within model shielding machine, saved space is that shield machine rear model tunnel internal placement sensor is monitored creating condition, can be used to arrange corresponding sensor on the tunnel in steel cylinder and place wire, stress and deformation monitoring for tunnel provide condition.Meanwhile, suction nozzle nozzle position is placed on shield machine and closes bottom storehouse, can simulate the duty of actual shield machine compared with the method adopting major diameter drilling rod more really.Adopt said apparatus to carry out sediment outflow reliably effectively, easily realize in test operation process and be easy to control, compared with drilling rod sediment outflow, be a kind of assay device being more suitable for the test of sand model shield class.
Accompanying drawing explanation
Fig. 1 is that this utility model is for simulating the structural representation of the model test apparatus of shield driving in sand；
In figure:
The outer detachable shield head of steel cylinder 3-of 1-shield machine bracing frame 2-shield machine
4-shield head closes 5-model tunnel, storehouse 6-pulpous state blade
7-servomotor 8-pressure transducer 9-tension-compression sensor
10-suction nozzle 11-air inlet pipe 12-vertical direction linear guide poles
13-direction of propulsion line slideway 14-translation direction line slideway
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model being described in further detail, this utility model is only explained by described specific embodiment, not in order to limit this utility model.
As it is shown in figure 1, a kind of model test apparatus for simulating shield driving in sand of the present utility model, including shield machine bracing frame 1, the outer steel cylinder 2 of shield machine, excavation face cutting unit, sediment outflow unit, model shielding machine jacking unit and pressure monitoring unit.The outer steel cylinder 2 of described shield machine is fixed on described shield machine bracing frame 1, and the front end of the outer steel cylinder 2 of described shield machine is provided with detachable shield head 3, and described detachable shield head 3 includes shield head and closes storehouse 4；The rear being positioned at described detachable shield head 3 in the outer steel cylinder 2 of described shield machine is provided with model tunnel 5.
Described excavation face cutting unit includes being arranged on described shield head and closes the pulpous state blade 6 in storehouse 4, is arranged on the servomotor 7 of shield machine afterbody, and described servomotor 7 imparts power to described pulpous state blade 6 by drive link.The rotating speed of servomotor 7 can drive pulpous state blade 6 to cut the front soil body according to different driving speed adjustment and by drive link, and the sand of landing enters shield head and closes storehouse 4.
Described sediment outflow unit includes infinitely variable speeds vacuum cleaner and PVC air inlet pipe 11, and the air entry of described infinitely variable speeds vacuum cleaner is closed storehouse 4 by described PVC suction nozzle 10 with described shield head and connected；One end of described PVC air inlet pipe 11 is closed storehouse 4 with described shield head and is connected, the other end of described PVC air inlet pipe 11 and atmosphere carry out QI invigorating for closing storehouse 4 for shield head, and interconnective infinitely variable speeds vacuum cleaner, PVC suction nozzle 10, shield head close storehouse 4 and PVC air inlet pipe 11 forms one for the gas peripheral passage of sediment outflow successively.In this utility model, suction nozzle and air inlet pipe all adopt pvc pipe, rigidity is protected, it is unlikely under bigger negative pressure of vacuum and deforms, ensure that sand transports smoothly at pipe interior, infinitely variable speeds vacuum cleaner can adjust the size of suction according to the different demands of the intrinsic pressure power of shield head, and from shield head, sand is closed storehouse 4 sucking-off.Pvc pipe used in this utility model is divided into two classes: a class pvc pipe is used as suction nozzle, is connected with infinitely variable speeds vacuum cleaner, in order to inhale sand；Another kind of pvc pipe is air inlet pipe, two ends are respectively communicated with shield head and close storehouse 4 and ambient atmosphere, close for shield head and provide certain QI invigorating environment inside storehouse 4, owing to inside shield head being a closing storehouse, shield is in progradation in sand, without QI invigorating environment, PVC suction nozzle 10 can be caused to block, therefore, by interconnective infinitely variable speeds vacuum cleaner, PVC suction nozzle 10, the gas peripheral passage that shield head closing storehouse 4 and PVC air inlet pipe 11 are formed, PVC suction nozzle 10 can be avoided to block, thus the sand that shield head is closed storehouse 4 is got rid of smoothly along PVC suction nozzle 10.
Described model shielding machine jacking unit is Three Degree Of Freedom jacking platform；Described Three Degree Of Freedom jacking platform includes vertical direction linear guide poles 12, direction of propulsion line slideway 13 and translation direction line slideway 14；Described shield machine bracing frame 1 is arranged on described direction of propulsion line slideway 13；It is connected by moving sets between described shield machine bracing frame 1 with described direction of propulsion line slideway 13, namely the bottom of described shield machine bracing frame 1 is provided with the chute coordinated with described direction of propulsion line slideway 13, can move along direction of propulsion line slideway 13 realizing shield machine bracing frame 1, make shield head advance or away from；It is connected by moving sets between described direction of propulsion line slideway 13 with described vertical direction linear guide poles 12, namely the both sides of described direction of propulsion line slideway 13 are respectively provided with the through hole of vertical direction, by being slidably matched of through hole and two vertical direction linear guide poles 12, it is possible to make described direction of propulsion line slideway 13 move up and down with shield machine bracing frame 1 thereon vertically linear guide poles 12；It is connected by moving sets between described vertical direction linear guide poles 12 with described translation direction line slideway 14, namely it is provided with support platform in the bottom of vertical direction linear guide poles 12, it is provided with, bottom platform, the chute coordinated with translation direction line slideway 14, such that it is able to make vertical direction linear guide poles 12 move along translation direction line slideway 14 supporting；Therefore, described shield machine bracing frame 1 has the Three Degree Of Freedom moved along translation direction, vertical direction and direction of propulsion, namely shield machine bracing frame 1 can move up and down along vertical direction linear guide poles 12, can move left and right to adjust shield machine position along the translation direction line slideway 14 of bottom, to adapt to the sand model casing of different size and openings position.Shield machine bracing frame 1 can move forward and backward along the direction of propulsion line slideway 13 on top, with simulate shield propelling and away from；The driving force of described Three Degree Of Freedom jacking platform is electric or hand, and the power source namely realizing jacking is not limit, it is possible to be servomotor or hand leading screw etc..
Described pressure monitoring unit includes being arranged on the pressure transducer 8 that shield head is closed in storehouse 4 and the tension-compression sensor 9 being fixed on outer steel cylinder 2 afterbody of shield machine；Pressure transducer 8 in described pressure monitoring unit closes the soil pressure in storehouse 4 for monitoring shield head described in shield jack-in process, the air-breathing speed for adjusting vacuum cleaner can provide reference；The tension-compression sensor 9 being positioned at shield machine afterbody is fixed by screw rod and shield machine, the total thrust size being actually provided to shield machine in shield machine jack-in process can be monitored, deducting shield machine by total thrust to close in storehouse 4 the soil pressure summation (i.e. the reading of pressure transducer 8 be multiplied by shield head close the cross-sectional area in storehouse 4) monitored and can obtain the frictional force between sand in shield machine fuselage and shield machine steel cylinder 2 outward and model casing, such shield machine stressing conditions can be very clear.
For the model test apparatus simulating shield driving in sand, this utility model simulates that actual shield machine is close, process and away from work process be: open servomotor 7, drive front pulpous state blade 6 to rotate the cutting soil body by drive link, allow the soil body in model casing enter into model shield head smoothly and close in storehouse 4.Monitoring shield head closes the reading of storehouse 4 pressure sensor 8, after the soil pressure stable reading that shield head is closed in storehouse 4, push ahead the outer steel cylinder 2 (its external power supply is not limit) of shield machine, the reading of the pressure transducer 8 in shield head closing storehouse 4 rises to during certain value (soil pressure controlling value requires depending on different tests), open infinitely variable speeds vacuum cleaner, adjust suction size, make the reading of pressure transducer 8 be maintained near setting value.So while advancing shield machine, the suction adjusting infinitely variable speeds vacuum cleaner carries out inhaling sand, in stable shield head closing storehouse 4 premised on soil pressure, pushes ahead shield machine.When shield machine shield head 3 passes from the model casing other end, progradation completes.Dismounting shield machine shield head, fixes the model tunnel 5 in the outer steel cylinder 2 of shield machine, carries out the sealing of model casing traversing through end.Three Degree Of Freedom jacking platform is moved rearwards by, slowly extract the outer steel cylinder 2 of shield machine out, the model tunnel 5 in the outer steel cylinder 2 of shield machine is made to be exposed among sand, owing to the outer steel cylinder 2 of shield machine itself has thickness, in addition, the gap length of the outer steel cylinder 2 of shield machine and model tunnel 5 can also be manually set, thus the process that outer for shield machine steel cylinder 2 is extracted out is the process (can adopt the steel cylinder of different-thickness to simulate different size of ground loss) producing ground loss.Treating to be fully drawn out outer for shield machine steel cylinder 2, test completes.
Although this utility model being described above in conjunction with figure; but this utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; when without departing from this utility model objective, it is also possible to make many variations, these belong within protection of the present utility model.
Claims (3)
1. for sand is simulated a model test apparatus for shield driving, including shield machine bracing frame (1), the outer steel cylinder (2) of shield machine, excavation face cutting unit, sediment outflow unit, model shielding machine jacking unit and pressure monitoring unit；
The outer steel cylinder (2) of described shield machine is fixed on described shield machine bracing frame (1), the front end of the outer steel cylinder (2) of described shield machine is provided with detachable shield head (3), and described detachable shield head (3) includes shield head and closes storehouse (4)；The rear being positioned at described detachable shield head (3) in the outer steel cylinder (2) of described shield machine is provided with model tunnel (5)；
Described excavation face cutting unit includes being arranged on described shield head and closes the pulpous state blade (6) in storehouse (4), being arranged on the servomotor (7) of shield machine afterbody, described servomotor (7) imparts power to described pulpous state blade (6) by drive link；
Described model shielding machine jacking unit is Three Degree Of Freedom jacking platform；
Described pressure monitoring unit includes being arranged on shield head and closes the pressure transducer (8) in storehouse (4) and be fixed on the tension-compression sensor (9) of outer steel cylinder (2) afterbody of shield machine；
It is characterized in that:
Described sediment outflow unit includes infinitely variable speeds vacuum cleaner, PVC suction nozzle (10) and PVC air inlet pipe (11)；The air entry of described infinitely variable speeds vacuum cleaner is closed storehouse (4) by described PVC suction nozzle (10) with described shield head and is connected；One end of described PVC air inlet pipe (11) is closed storehouse (4) with described shield head and is connected, the other end of described PVC air inlet pipe (11) carries out QI invigorating with atmosphere for closing storehouse (4) for shield head, and interconnective infinitely variable speeds vacuum cleaner, PVC suction nozzle (10), shield head close storehouse (4) and PVC air inlet pipe (11) the formation one gas peripheral passage for sediment outflow successively.
2. according to claim 1 for sand is simulated the model test apparatus of shield driving, it is characterized in that, described Three Degree Of Freedom jacking platform includes vertical direction linear guide poles (12), direction of propulsion line slideway (13) and translation direction line slideway (14)；Described shield machine bracing frame (1) is arranged on described direction of propulsion line slideway (13)；Between described shield machine bracing frame (1) with described direction of propulsion line slideway (13), between described direction of propulsion line slideway (13) and described vertical direction linear guide poles (12), it is connected respectively through moving sets between bottom and described translation direction line slideway (14) of described vertical direction linear guide poles (12)；Described shield machine bracing frame (1) has the Three Degree Of Freedom moved along translation direction, vertical direction and direction of propulsion；The driving force of described Three Degree Of Freedom jacking platform is electric or hand.
3. according to claim 1 for sand is simulated the model test apparatus of shield driving, it is characterized in that, pressure transducer (8) in described pressure monitoring unit is used for monitoring shield head described in shield jack-in process and closes the soil pressure in storehouse (4), to adjust the air-breathing speed of infinitely variable speeds vacuum cleaner；Described tension-compression sensor (9) is used for monitoring in shield machine jack-in process, being applied to total thrust of shield machine on direction of propulsion, this thrust deducts shield head and closes the frictional force that the summation of storehouse (4) interior soil pressure is in the outer steel cylinder (2) of shield machine and model casing between sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620094741.5U CN205349344U (en) | 2016-01-29 | 2016-01-29 | A model test device that is arranged in sand simulation shield structure machine to tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620094741.5U CN205349344U (en) | 2016-01-29 | 2016-01-29 | A model test device that is arranged in sand simulation shield structure machine to tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN205349344U true CN205349344U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620094741.5U Withdrawn - After Issue CN205349344U (en) | 2016-01-29 | 2016-01-29 | A model test device that is arranged in sand simulation shield structure machine to tunnel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545316A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Model test device for simulating shield tunneling machine tunneling in sandy soil |
| CN109738221A (en) * | 2019-01-22 | 2019-05-10 | 安徽建筑大学 | A kind of laboratory test simulation system of jacking construction |
| CN109973103A (en) * | 2019-03-22 | 2019-07-05 | 东北大学 | A kind of shield simulation test device of adjustable angle |
| CN110242309A (en) * | 2019-06-03 | 2019-09-17 | 义乌工商职业技术学院 | A kind of model test apparatus of simulation shield machine driving |
| CN110656949A (en) * | 2019-08-26 | 2020-01-07 | 山东大学 | Profiling tunneling system and method for model test tunnel excavation of any shape |
-
2016
- 2016-01-29 CN CN201620094741.5U patent/CN205349344U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545316A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Model test device for simulating shield tunneling machine tunneling in sandy soil |
| CN105545316B (en) * | 2016-01-29 | 2017-10-10 | 天津大学 | Model test apparatus for simulating shield machine driving in sand |
| CN109738221A (en) * | 2019-01-22 | 2019-05-10 | 安徽建筑大学 | A kind of laboratory test simulation system of jacking construction |
| CN109738221B (en) * | 2019-01-22 | 2021-06-22 | 安徽建筑大学 | Indoor test simulation system for pipe jacking construction |
| CN109973103A (en) * | 2019-03-22 | 2019-07-05 | 东北大学 | A kind of shield simulation test device of adjustable angle |
| CN109973103B (en) * | 2019-03-22 | 2020-04-14 | 东北大学 | Shield simulation test device with adjustable angle |
| CN110242309A (en) * | 2019-06-03 | 2019-09-17 | 义乌工商职业技术学院 | A kind of model test apparatus of simulation shield machine driving |
| CN110656949A (en) * | 2019-08-26 | 2020-01-07 | 山东大学 | Profiling tunneling system and method for model test tunnel excavation of any shape |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20171010 |