CN106840729A - It is a kind of to simulate the experimental rig that class rectangle shield segmented is excavated - Google Patents
It is a kind of to simulate the experimental rig that class rectangle shield segmented is excavated Download PDFInfo
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- CN106840729A CN106840729A CN201710164322.3A CN201710164322A CN106840729A CN 106840729 A CN106840729 A CN 106840729A CN 201710164322 A CN201710164322 A CN 201710164322A CN 106840729 A CN106840729 A CN 106840729A
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- class rectangle
- rectangle shield
- shield machine
- class
- support frame
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention proposes a kind of experimental rig for simulating class rectangle shield segmented excavation, including several unit class rectangle shield machines are connected in sequence, and each unit class rectangle shield machine includes drive control unit, two contracting mechanisms and outer framework；The drive control unit includes four motors, and the output end of each motor power connects the connection of worm gear screw rod, its rear end and electrified wire；Four motors are secure around on each support frame respectively by motor fixture.The present invention uses mechanical structure, and using rigid mechanical structure and shell, effective resistance to compression prevents deformation, makes data more accurate.Using Discrete control, the data variation in realistic simulation is more conformed to.The present invention is simple and convenient, while considering class rectangle shield machine in the process of running to the influence of ground loss, the motor control of use also can preferably carry out related indoor model test.
Description
Technical field
The invention belongs to underground engineering technical field, and in particular to the experiment that a kind of simulation class rectangle shield segmented is excavated
Device.
Background technology
A kind of novel shield engineering method：Class rectangle shield method is applied in No. 3 line engineerings of ningbo of china subway.
And during class rectangle shield-tunneling construction, surrounding soil can be caused to deform, underground utilities around and building can be caused unavoidably
Influence.In this regard, being necessary to be furtherd investigate to assist to ensure the safety in work progress.
And in research process, there are many uncertain factors in on-the-spot test, therefore mostly using indoor contracting dimension model examination
Test, it is a kind of to simulate the experimental rig that class rectangle shield segmented excavates and be more convenient for the carrying out of experiment in view of the need for experiment, obtain
The test data for obtaining can provide effectively help for practice of construction in future.
Drawn according to available data, the related reduced scale cun simulated experiment of class rectangle shield machine is less.And most soil body simulations
Experiment has the following disadvantages：
(1) the shield machine model for there was only single-unit is shunk and is expanded simulation, only study two-dimensional soil deformation；
(2) existing most class rectangle simulation shield machines are not fine more coarse enough, there is certain shadow to data accuracy
Ring；Or run manually, operate comparatively laborious.
Or the rectangular shield machine simulation driving experiment done such as Shanghai shield contrived experiment research center Co., Ltd is ground
Study carefully, which use the experiment rectangular shield machine that sectional dimension is 1200mm × 1000mm, the testing machine uses cross knot
The digging of structure cutting tool, two groups of reductors and oil motor drive device drive, have also been devised centralized lubricating system in addition；Or
Such as its team of fourth text of Tongji University, a kind of class rectangle shield cutting propulsion simulation experiment system of use.In view of the two models
Pilot system carries out reduced scale cun with actual shield machine construction, so maximum is disadvantageous in that：
(3) for full-scale model test or field experiment, expense is far above the homemade class rectangle shield of this set system
Machine model test apparatus.
The content of the invention
The purpose of the present invention is to overcome not enough in the prior art, it is an object of the invention to provide one kind simulation class rectangle shield
The segmented reduced scale cun experimental rig that structure is excavated, it is proposed that 1:20 reduced scale cun class rectangle shield prototype, by segmented
Design, so as to consider three-dimensional soil deformation, with motor control shield machine is used, operation is convenient, saves test period, while using
The contracting model machine of outer rigid housing is reaching the purpose that simulation shield machine operation causes ground loss, moreover it is possible to control degree of precision
Ground loss and actual conditions of more coincideing soil deformation, for constructing tunnel and design provides it is truer, accurately test
Data, with ensure that city shield tunnel builds it is efficient with it is safe.
In order to achieve the above object, the present invention is achieved by the following technical solutions：
The present invention proposes a kind of experimental rig for simulating class rectangle shield segmented excavation, including several unit class rectangles
Shield machine is connected in sequence, and each unit class rectangle shield machine includes drive control unit, two contracting mechanisms and housing
Frame；
The drive control unit includes four motors, and the output end of each motor power connects worm gear
The connection of screw rod, its rear end and electrified wire；
Four motors are secure around on each support frame respectively by motor fixture；
Outer framework is four class arc shell piece connection compositions, respectively by recessed between two neighboring class arc shell piece
Slot structure is inlayed, and maintains free gap between two neighboring arc-like sheet；Free gap between two neighboring arc-like sheet
Outside is provided with mud guard；
Contracting mechanism is respectively mounted at the two ends of unit class rectangle shield machine；
Two contracting mechanisms are divided into elevating mechanism and horizontal contracting mechanism, wherein：
Elevating mechanism includes rotating disk, bull stick, arc elevator and support frame；Horizontal contracting mechanism includes gear and rotating shaft；
Rotating disk is connected by rotating shaft with support frame, and rotating disk is connected by bull stick with arc elevator, is arranged on driving output
The gear at end is meshed with the tooth bar on support frame；The support frame other end is fixedly connected with outer framework；
Rotating disk is rotated by drive control unit, bull stick is driven, arc elevator is rotated, lower bracing frame is hung down
Straight motion, realizes the height change of class rectangle shield machine；
Simultaneously by drive control unit rotate gear, the tooth bar that drive is connected with support frame carries out left and right sidesing supporting frame
Move horizontally, realize the change width of class rectangle shield machine.
As preferred：Connected by rubber Membrane cover between two neighboring unit shield machine.
Compared with prior art, beneficial effects of the present invention are as follows：
Innovative point of the invention one：Using mechanical structure, using rigid mechanical structure and shell, effective resistance to compression prevents shape
Become, make data more accurate.
Innovative point of the invention two：Using Discrete control, the data variation in realistic simulation is more conformed to.
Innovative point of the invention three：The control of device can be controlled by computer or Electronic Control end completely, make operation side
Just stablize, can preferably simulate multinomial experiment.
The present invention, rotating shrinking amplitude is controlled using motor and gear, and rotating shrinking is easily controllable and stable, can first shrink
After expand, the process that class rectangle shield machine excavates ground loss is simulated completely.
The present invention can adjust unit class rectangle shield machine quantity in multiple using multiple unit class rectangle shield machine combinations
Carry out combining convenient between the simulation of different length, and unit class rectangle shield machine and unit class rectangle shield machine in model casing.
The present invention is simple and convenient, while considering class rectangle shield machine in the process of running to the influence of ground loss, adopts
With motor control also can preferably carry out related indoor model test.
Brief description of the drawings
Fig. 1 be apparatus of the present invention before deflation after difference in areas schematic diagram.
Fig. 2 is apparatus of the present invention side structure schematic diagram.
Fig. 3 is apparatus of the present invention dimensional structure diagram.
Fig. 4 is the perisystolic structural representation of apparatus of the present invention.
Fig. 5 is the structural representation after apparatus of the present invention are shunk.
Reference：Gear (1), motor (2), arc elevator (3), mud guard (4), outer framework (5), support frame
(6), bull stick (7), rotating disk (8), rotating shaft (9), motor fixture (10).
Specific embodiment
Technical scheme is described further with reference to Figure of description：
As shown in Fig. 1~5, the present invention proposes a kind of specific reality for simulating the experimental rig that class rectangle shield segmented is excavated
Example is applied, including several unit class rectangle shield machines are connected in sequence, each unit class rectangle shield machine includes driving controlling
Unit processed, two contracting mechanisms and outer framework 5, the drive control unit include four motors 2, and each drives electricity
The output end of the power of machine 2 connects the connection of worm gear screw rod, its rear end and electrified wire；Four motors 2 pass through motor fixture
10 are secure around on each support frame 6 respectively；Outer framework 5 is four class arc shell piece connection compositions, in two neighboring class arc
Inlayed by groove structure respectively between shape housing piece, and free gap is maintained between two neighboring arc-like sheet；Adjacent two
Free gap outside between individual arc-like sheet is provided with mud guard 4；As shown in Figure 4 and Figure 5：The two of unit class rectangle shield machine
End is respectively mounted contracting mechanism, and two contracting mechanisms are divided into elevating mechanism and horizontal contracting mechanism, wherein：Elevating mechanism includes turning
Disk 8, bull stick 7, arc elevator 3 and support frame 6；Horizontal contracting mechanism includes gear 1 and rotating shaft 9；Rotating disk 8 by rotating shaft 9 with
Support frame 6 is connected, and rotating disk 8 is connected by bull stick 7 with arc elevator 3, is arranged on the gear 1 and support frame 6 of drive output
On tooth bar be meshed；The other end of support frame 6 is fixedly connected with outer framework 5；Rotating disk 8 is rotated by drive control unit, is driven
Bull stick 7, rotates arc elevator 3, is in vertical motion lower bracing frame 6, realizes the height change of class rectangle shield machine；
Simultaneously by drive control unit rotate gear 1, the tooth bar that drive is connected with support frame 6 makes left and right sidesing supporting frame 6 carry out level shifting
It is dynamic, realize the change width of class rectangle shield machine.
Wherein：Connected by rubber Membrane cover between two neighboring unit shield machine.
The course of work of the invention and operation principle are：Installed in soil box is tested and place this model, then banketed
The actual soil pressure in true construction environment is simulated, model is buried in the earth, under the control of control end, model volume is received
Contracting, realizes ground loss phenomenon of the simulation class rectangle shield machine in tunneling.
Drive control unit：This model equipment is driven using multiple motors, and motor four is one group, each unit class
There are two groups of motors and two groups of reductors on rectangular shield machine, and equipped with supporting adn fixing device.Motor is rotated makes lifting
Mechanism and horizontal contracting mechanism are moved, and to make after motor stop motion fixed volume and keeping stabilization, are employed herein snail
The self-locking performance of wheel, installs worm-and-wheel gear at motor power output.Motor output connection contracting mechanism, rear end
Connection electrified wire, every group of electrified wire controls one group of motor, multigroup electrified wire to be connected with external control end.Control end
Every group of motor then can be respectively controlled, and two groups of motors control a motion for unit class rectangle shield machine, make mould
Type realizes Discrete control.
As shown in Figure 4 and Figure 5, contracting mechanism：There is contracting mechanism at class rectangle shield machine two ends, and contracting mechanism is divided into lifting
Mechanism and horizontal contracting mechanism.Elevating mechanism：Rotating disk is rotated by drive control unit, bull stick is driven, turns arc elevator
It is dynamic, lower bracing frame is in vertical motion, change the height of class rectangle shield machine；Horizontal contracting mechanism：By drive control
Unit rotational gear, the tooth bar that drive is connected with support frame, is moved horizontally left and right sidesing supporting frame, changes class rectangle shield machine
Width.Be change circular section area, reach change cylinder volume come reach simulation class rectangle shield machine cause soil to damage
The purpose of mistake, being driven by motor moves elevating mechanism and horizontal contracting mechanism, changes the Gao Yukuan of the model, and because
Be frictional force, under the various factors such as external pressure, outer framework hardly along significantly rotating counterclockwise, in the effect of contracting mechanism
It is lower that to contract, before and after shrinking, the area in class rectangle section there occurs change such as Fig. 1, so that the change of volume, by calculating
It is required that to reduce 5%.
Class rectangle outer framework is then made up of four class arc shell pieces, and its seam crossing prevents sandy soil from entering using embedded structure
Enter causes stuck or can not shrink in seam, and installs mud guard in outer layer.
Space wastage formula is in Fig. 1：
(high with a width of fixed proportion)
(C is space wastage percentage)
Wherein：X is horizontal width, unit mm；Y is vertical height, unit mm；Δ X is horizontal width knots modification, unit
mm；Δ Y is vertical height knots modification, unit mm.This model X=575mm；Y=350mm.
Model segment is connected：One unit class square is constituted with the combination of two groups of motors, two groups of contracting mechanisms and outer framework
Shape shield machine, each unit class rectangle shield machine is all connected respectively at control end, and control end can be allow to distinguish by particular order
The contraction of control unit class rectangle shield machine, reaches the purpose of Discrete control, makes the data multistage that detection is obtained, and produces class
It is similar to the simulation of ground loss during class rectangle shield machine is pushed ahead.All installed immediately below each unit class rectangle shield machine
Horizontal alignment and support meanss, are connected between unit class rectangle shield machine and unit class rectangle shield machine with rubber Membrane cover, make each
Unit class rectangle shield machine will not offset, and improve three-dimensional accuracy.
By the coordinate operation of said apparatus, control end is set to control a unit class rectangle shield respectively by particular order
The contraction of machine, makes ground loss progressively carry out, and realizes the full simulation for ground loss in true constructing tunnel, coordinates other
Monitoring equipment, makes soil body delta data.
Above-described embodiment is the description of the invention, is not limitation of the invention, it is any to simple transformation of the present invention after
Scheme belong to protection scope of the present invention.
Claims (3)
1. it is a kind of to simulate the experimental rig that class rectangle shield segmented is excavated, it is characterised in that including several unit class rectangles
Shield machine is connected in sequence, and each unit class rectangle shield machine includes drive control unit, two contracting mechanisms and housing
Frame (5), the drive control unit includes four motors (2), and the output end of each motor (2) power is connected
The connection of worm gear screw rod, its rear end and electrified wire；Four motors (2) are secure around respectively by motor fixture (10)
On each support frame (6)；
Outer framework (5) is four class arc shell piece connection compositions, respectively by recessed between two neighboring class arc shell piece
Slot structure is inlayed, and maintains free gap between two neighboring arc-like sheet；Pacify respectively at the two ends of unit class rectangle shield machine
Dress contracting mechanism, two contracting mechanisms are divided into elevating mechanism and horizontal contracting mechanism, wherein：Elevating mechanism includes rotating disk (8), turns
Bar (7), arc elevator (3) and support frame (6)；Horizontal contracting mechanism includes gear (1) and rotating shaft (9)；Rotating disk (8) is by turning
Axle (9) is connected with support frame (6), and rotating disk (8) is connected by bull stick (7) with arc elevator (3), is arranged on drive output
Gear (1) is meshed with the tooth bar on support frame (6)；Support frame (6) other end is fixedly connected with outer framework (5)；
Rotating disk (8) is rotated by drive control unit, bull stick (7) is driven, arc elevator (3) is rotated, makes lower bracing frame
(6) it is in vertical motion, realizes the height change of class rectangle shield machine；
Simultaneously by drive control unit rotate gear (1), the tooth bar that drive is connected with support frame (6) makes left and right sidesing supporting frame (6)
Moved horizontally, realized the change width of class rectangle shield machine.
2. the experimental rig that a kind of simulation class rectangle shield segmented according to claim 1 is excavated, it is characterised in that
Connected by rubber Membrane cover between two neighboring unit shield machine.
3. the experimental rig that a kind of simulation class rectangle shield segmented according to claim 1 or 2 is excavated, its feature exists
In being provided with mud guard (4) on the outside of the free gap between two neighboring arc-like sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164322.3A CN106840729B (en) | 2017-03-20 | 2017-03-20 | Test device for simulating rectangular shield sectional excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164322.3A CN106840729B (en) | 2017-03-20 | 2017-03-20 | Test device for simulating rectangular shield sectional excavation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106840729A true CN106840729A (en) | 2017-06-13 |
| CN106840729B CN106840729B (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710164322.3A Active CN106840729B (en) | 2017-03-20 | 2017-03-20 | Test device for simulating rectangular shield sectional excavation |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387098A (en) * | 2017-08-04 | 2017-11-24 | 天津大学 | A kind of destruction initiating device for simulating shield tunnel local failure accident |
| CN108776032A (en) * | 2018-03-27 | 2018-11-09 | 浙江大学城市学院 | A kind of segmented reduced scale cun experimental rig that simulation rectangular shield excavates |
| CN108896329A (en) * | 2018-03-27 | 2018-11-27 | 浙江大学城市学院 | A kind of segmented reduced scale cun experimental rig for simulating shape of a hoof shield tunneling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387098A (en) * | 2017-08-04 | 2017-11-24 | 天津大学 | A kind of destruction initiating device for simulating shield tunnel local failure accident |
| CN108776032A (en) * | 2018-03-27 | 2018-11-09 | 浙江大学城市学院 | A kind of segmented reduced scale cun experimental rig that simulation rectangular shield excavates |
| CN108896329A (en) * | 2018-03-27 | 2018-11-27 | 浙江大学城市学院 | A kind of segmented reduced scale cun experimental rig for simulating shape of a hoof shield tunneling |
| CN108896329B (en) * | 2018-03-27 | 2024-01-26 | 浙江大学城市学院 | Sectional type shrinkage dimension test device for simulating horseshoe shield excavation |
| CN108776032B (en) * | 2018-03-27 | 2024-01-30 | 浙江大学城市学院 | Sectional type shrinkage dimension test device for simulating rectangular shield excavation |
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| Publication number | Publication date |
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| CN106840729B (en) | 2023-05-16 |
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