CN109374268A - A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device - Google Patents
A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device Download PDFInfo
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- CN109374268A CN109374268A CN201810409517.4A CN201810409517A CN109374268A CN 109374268 A CN109374268 A CN 109374268A CN 201810409517 A CN201810409517 A CN 201810409517A CN 109374268 A CN109374268 A CN 109374268A
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000004088 simulation Methods 0.000 claims abstract 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 19
- 238000013461 design Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000005457 optimization Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 2
- 238000009661 fatigue test Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of shield machine/TBM hob tool apron fatigue stresses and life testing method and its device.It is characterized by: using a kind of tool apron clamp device, tested tool apron is welded in tool apron clamp device and is fixed in fatigue tester together, the wedge-shaped loading blocks of one angle adjustable are installed on fatigue tester movable chuck, the adjustable force that wedge-shaped loading blocks apply is born on tool apron using the cutter shaft of spherical force block, simulation tool apron bears the random rock break load of alternation formula.Specific structure is: tested tool apron is welded in tool apron clamp device, and tool apron clamp device is fixed on fatigue tester, and is located at the underface of angle adjustable wedge shape loading blocks；Spherical force block is fixed on hob holder by cutter shaft, angle adjustable wedge shape loading blocks are inclination force application part, linear motion up and down, generates adjustable three-dimensional loading force to spherical force block using the reciprocal alternating load of fatigue tester and the wedge-shaped loading blocks of different angle.Each component of hob holder and bolt are exported the ess-strain signal of hob holder respective direction by mount stress strain transducer composition test electric bridge.Carrying out fatigue test to it by fatigue tester can be obtained the fatigue damage rule of tool apron and its each component.
Description
Technical field
The present invention relates to one kind for each component stress regularity of distribution of shield machine/TBM hob tool apron and fatigue damage rule
The test method and its device of research, specifically design a kind of shield machine/TBM hob tool apron fatigue stress and life testing method and
Its device.
Background technique
Shield machine/TBM is the dedicated heading equipment in tunnel, is widely used in the weight such as underground traffic, seabed tunnel, massif tunnel
Among large-engineering.The disk cutter installed on cutter head of shield machine mainly passes through squeezing action fractured rock, due to underground and tunnel
Geological condition is complicated and changeable in engineering construction, and load, the impact force action of mutation, tool apron are subjected in disk cutter rock break-off process
Upper each structure bears violent impact and vibration, and tool-apron structure craze and transfiguration is easily caused even to be crushed, and bolt looseness is even broken,
The failures such as structural fatigue damage, bring great inconvenience to project construction.
At present in TBM work progress, the only head driving distance of tunnel is increasingly longer, and longest has reached 40km or more, easily goes out
The craze and transfiguration of existing tool-apron structure is even crushed, and it is therefore necessary to carry out fatigue stress test to tool apron all parts.From reality
Angle set out, the stress distribution and fatigue damage rule of quantitative analysis each component of tool apron analyze the reason of it causes conquassation,
Optimize the generation that structure solves problems.It is proposed of the invention can be satisfactorily resolved the above problem.
Summary of the invention
For the authentic testing for solving the problems, such as each component stress strain distributing disciplinarian of tool apron and fatigue damage rule, the present invention is mentioned
Shield machine/TBM hob tool apron fatigue stress and life testing method and its device are carried out in laboratory for one kind.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device, including pedestal (3), positioning
Pin (4), pin shaft (5), skewback (6), spherical force block (7), cutter shaft (8), interior tool apron (9), outer tool apron (10), wedge block
(11), bolt (12), lower lock block (13), upper junction plate (14), side plate one (15), side plate two (16), lower connecting plate (17) are constituted
As shown in figure one, figure two.
The invention discloses a kind of shield machine/TBM hob tool apron fatigue stresses and life testing method and its device, special
Sign is: tool apron is made of interior tool apron (9) and outer tool apron (10), and tested tool apron is welded on by upper junction plate (14), side plate one
(15), in the tool apron clamp device of side plate two (16), lower connecting plate (17) composition, the wedge-shaped loading blocks of angle adjustable are by pedestal
(3), shop bolt (4), pin shaft (5) and skewback (6) are constituted, and are located at the surface of tool apron；Spherical force block (7) passes through cutter shaft
(8) it is fixed on hob holder, wedge block (11), lower lock block (13) and bolt (12) are strained by mount stress in hob holder
Sensor constitutes test electric bridge, and the wedge-shaped loading blocks of angle adjustable are inclination force application part, moves along a straight line, is tried up and down using fatigue
The wedge-shaped loading blocks of the reciprocal alternating load and different angle of testing machine generate three-dimensional of different sizes to spherical force block (7) and add
Power is carried, the ess-strain signal of hob holder respective direction is exported, and obtains pair of ess-strain and skewback application three axis force
It should be related to.
The hob holder fatigue stress and endurance testing device simulate the force environment of tool apron, upper junction plate completely
(14), side plate one (15), side plate two (16) size and girff in shield/TBM cutterhead size it is completely the same, be tested in tool apron
(9) and outer tool apron (10) and upper junction plate (14), side plate one (15), side plate two (16) welding manner also with shield/TBM cutterhead
In welding manner it is consistent.
The angle that skewback (6) can be changed in the hob holder fatigue stress and endurance testing device realizes force resolution,
It is able to achieve different angle different directions force resolution, so that spherical force block (7) are applied with three-dimensional loading force of different sizes, it will
Skewback (6) rotates to specified angle, fixed by shop bolt (4), and the vertical angle of skewback (6) and pedestal (3) is Φ, by base
Seat (3) rotates to specified angle, and the level angle with rolling force direction is θ, and the stress of spherical force block (7) is decomposed into vertically
The power F in directionZ, rotating direction power FY=(FZ/ tan Φ) sin θ and lateral force FX=(FZ/tanΦ)cosθ。
When the hob holder fatigue stress and endurance testing device carry out stress test, the height of spherical force block (7)
It with diameter is obtained by shield/TBM hob size of different size, changes its diameter and height, analog by calculating
The hobboing cutter stress of different size, the angle of the wedge-shaped loading blocks of angle adjustable are that the three axis force as suffered by cutterhead different location hobboing cutter is big
Small decision changes its angle, analog central hob, positive hobboing cutter and edge hobboing cutter stress by calculating.
The hob holder fatigue stress and endurance testing device can carry out fatigue and damage experiment, survey when passing through initial loading
The ess-strain numerical value obtained determines the size of fatigue tester load, can measure interior tool apron (9), outer tool apron after certain CYCLIC LOADING
(10), the ess-strain fatigue variation of wedge block (11), bolt (12) and lower lock block (13), can analyze shield by these data
The fatigue damage rule of structure hob holder, can finally measure the fatigue life of tool apron, mention for the optimization design of shield hob holder
For guidance.
Detailed description of the invention
Fig. 1 is fatigue stress of the present invention and life test figure.In figure: fatigue test compressing head (1).Fatigue tester pedestal
(2)。
Fig. 2 is schematic perspective view of the invention.In figure: pedestal (3).Shop bolt (4).Pin shaft (5).Skewback (6).
Spherical force block (7).Upper junction plate (14).Side plate one (15).Side plate two (16).Lower connecting plate (17).
Fig. 3 is partial sectional view of the invention.In figure: cutter shaft (8).Interior tool apron (9).Outer tool apron (10).Wedge block (11).
Bolt (12).Lower lock block (13).
Stress decomposition diagram when Fig. 4 is three axis force of the present invention calibration.
Fig. 5 is the schematic perspective view of the wedge-shaped loading blocks of angle adjustable of the present invention.
Fig. 6 is that the wedge-shaped loading blocks of angle adjustable shown in Fig. 5 of the present invention face half sectional view.
Fig. 7 is the side view half sectional view of the wedge-shaped loading blocks of angle adjustable shown in Fig. 5 of the present invention.
Specific embodiment
Structure of the invention is described further below in conjunction with attached drawing and by specific embodiment.It should be noted that this reality
Example is narrative, rather than limit, this does not limit the scope of protection of the present invention.
A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device, structure is by being tested tool apron
It is welded in the tool apron clamp device being made of upper junction plate (14), side plate one (15), side plate two (16), lower connecting plate (17),
And it is located at the underface of the wedge-shaped loading blocks of angle adjustable；The wedge-shaped loading blocks of angle adjustable by pedestal (3), shop bolt (4),
Pin shaft (5) and skewback (6) are constituted, and spherical force block (7) is fixed on hob holder by cutter shaft, interior tool apron (9), outer tool apron
(10), wedge block (11), bolt (12) and lower lock block (13) constitute test electric bridge by ess-strain, and the wedge shape of angle adjustable adds
Carrying block is inclination force application part, moves along a straight line up and down, utilizes the reciprocal alternating load of fatigue tester and the wedge shape of different angle
Loading blocks generate three-dimensional loading force to spherical force block (7).By interior tool apron (9), outer tool apron (10), wedge block (11), bolt
(12) and the ess-strain signal of lower lock block (13) respective direction exports.
Each component primary stress test is carried out to hob holder: hob holder is fixed on upper junction plate (14), side plate one
(15), in the tool apron clamp device of side plate two (16), lower connecting plate (17) composition.It is located at the wedge shape load of angle adjustable
The underface of block is fixed on cutter shaft by calculating selection proper height and the spherical force block (7) of size, interior tool apron (9),
Test electricity is constituted by mount stress strain transducer on outer tool apron (10), wedge block (11), bolt (12) and lower lock block (13)
Bridge.Output signal to sensor is reset.Tool apron fastening bolt (12) is tightened, is pre-tightened by sensor measurement bolt (12)
Power, and the ess-strain of interior tool apron (9), outer tool apron (10), wedge block (11) and lower lock block (13) is recorded as initial value.
Three axis force calibration and loading stress test: the inclined-plane and pedestal (3) bottom of skewback (6) are carried out to each component of hob holder
The vertical angles in face are Φ, and the level angle with rolling force direction is θ, and pressing switch pushes skewback (6) with pedestal (3), right
The stress of spherical force block (7), can be decomposed into the power F of vertical direction by spherical force block (7) forceZ, rotating direction power FY=
(FZ/ tan Φ) sin θ and lateral force FX=(FZ/tanΦ)cosθ.Obtain interior tool apron (9), outer tool apron (10), wedge block (11),
The output of the ess-strain signal of bolt (12) and lower lock block (13), and obtain ess-strain and apply the corresponding relationship of three axis force.
Each component fatigue stress test is carried out to hob holder: lower connecting plate (17) is fixed on fatigue tester pedestal
(2) on, the wedge-shaped loading blocks of angle adjustable are fixed on fatigue test compressing head (1), determine the wedge shape load of angle adjustable
Skewback (6) the vertical angles Φ and level angle θ of block.Hob holder fatigue stress and life test are filled by fatigue tester
Carry out initial loading is set, the initial of interior tool apron (9), outer tool apron (10), wedge block (11), bolt (12) and lower lock block (13) is recorded
Ess-strain.The loaded load size of fatigue tester is obtained by the corresponding relationship that ess-strain and skewback apply three axis force.
Then by fatigue tester to hob holder fatigue stress test device carry out high and low cycle fatigue test, record different loads and
Interior tool apron (9) under different cycle-indexes, outer tool apron (10), wedge block (11), bolt (12) and lower lock block (13) ess-strain
Situation of change, by these data can analyze shield hob holder fatigue damage rule, be shield hob holder optimization
Design provides guidance.
Claims (5)
1. a kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device, including pedestal (3), positioning pin
Follow closely (4), pin shaft (5), skewback (6), spherical force block (7), cutter shaft (8), interior tool apron (9), outer tool apron (10), wedge block (11),
Bolt (12), lower lock block (13), upper junction plate (14), side plate one (15), side plate two (16), lower connecting plate (17), feature exists
In: tool apron is made of interior tool apron (9) and outer tool apron (10), and tested tool apron is welded on by upper junction plate (14), side plate one (15), side
In the tool apron clamp device that plate two (16), lower connecting plate (17) form, the wedge-shaped loading blocks of angle adjustable are by pedestal (3), positioning
Pin (4), pin shaft (5) and skewback (6) are constituted, and are located at the surface of tool apron；Spherical force block (7) is fixed by cutter shaft (8)
On hob holder, wedge block (11), lower lock block (13) and bolt (12) pass through mount stress strain transducer in hob holder
Test electric bridge is constituted, the wedge-shaped loading blocks of angle adjustable are inclination force application part, move along a straight line up and down, utilize fatigue tester
The wedge-shaped loading blocks of reciprocal alternating load and different angle generate three-dimensional loading force of different sizes to spherical force block (7), will
The ess-strain signal of hob holder respective direction exports, and obtains the corresponding relationship of ess-strain and skewback application three axis force.
2. a kind of shield machine/TBM hob tool apron fatigue stress described in accordance with the claim 1 and life testing method and its dress
It sets, it is characterised in that: the force environment of simulation tool apron completely, the size of upper junction plate (14), side plate one (15), side plate two (16)
It is completely the same with the size of girff in shield/TBM cutterhead, it is tested interior tool apron (9) and outer tool apron (10) and upper junction plate (14), side
Plate one (15), the welding manner of side plate two (16) are also consistent with the welding manner in shield/TBM cutterhead.
3. a kind of shield machine/TBM hob tool apron fatigue stress described in accordance with the claim 1 and life testing method and its dress
It sets, it is characterised in that: the angle of changeable skewback (6) realizes force resolution, is able to achieve different angle different directions force resolution,
To which spherical force block (7) are applied with three-dimensional loading force of different sizes, skewback (6) is rotated into specified angle, passes through positioning
Pin (4) is fixed, and the vertical angle of skewback (6) and pedestal (3) is Φ, pedestal (3) is rotated to specified angle, with rolling force side
To level angle be θ, the stress of spherical force block (7) is decomposed into the power F of vertical directionZ, rotating direction power FY=(FZ/
Tan Φ) sin θ and lateral force FX=(FZ/tanΦ)cosθ。
4. a kind of shield machine/TBM hob tool apron fatigue stress described in accordance with the claim 1 and life testing method and its dress
It sets, it is characterised in that: when carrying out stress test, the height and diameter of spherical force block (7) are shield/TBM by different size
What the size of hobboing cutter obtained, change its diameter and height by calculating, the hobboing cutter stress of analog different size, angle adjustable
The angle of wedge-shaped loading blocks is that the three axis force size suffered by cutterhead different location hobboing cutter determines, changes its angle by calculating, can
Simulate central hob, positive hobboing cutter and edge hobboing cutter stress.
5. a kind of shield machine/TBM hob tool apron fatigue stress described in accordance with the claim 1 and life testing method and its dress
It sets, it is characterised in that: carry out fatigue and damage experiment, the ess-strain numerical value measured when passing through initial loading determines fatigue tester
The size of load can measure interior tool apron (9), outer tool apron (10), wedge block (11), bolt (12) after certain CYCLIC LOADING and push
The ess-strain fatigue of block (13) changes, and the fatigue damage rule of shield hob holder, final energy can be analyzed by these data
The fatigue life of tool apron is measured, the optimization design for shield hob holder provides guidance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810409517.4A CN109374268A (en) | 2018-05-02 | 2018-05-02 | A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810409517.4A CN109374268A (en) | 2018-05-02 | 2018-05-02 | A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device |
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| CN109374268A true CN109374268A (en) | 2019-02-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080788A (en) * | 2019-06-06 | 2019-08-02 | 中国铁建重工集团股份有限公司 | A kind of shield machine roller cutter girff device |
| CN111220324A (en) * | 2020-01-22 | 2020-06-02 | 上海应用技术大学 | Calibration device and calibration method for MEMS micro-force-torque sensor |
| CN111473965A (en) * | 2020-04-22 | 2020-07-31 | 西安航空制动科技有限公司 | Semi-snap ring fatigue test assembly and fatigue test device |
| CN114295400A (en) * | 2021-12-30 | 2022-04-08 | 中铁工程装备集团有限公司 | Hob tool apron reliability test bench and test method |
| CN117664550A (en) * | 2023-12-15 | 2024-03-08 | 海兴和美汽车配件有限公司 | Leaf spring fatigue test device |
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| CN106706181A (en) * | 2017-04-05 | 2017-05-24 | 中南大学 | Hob three-way force measurement tool holder applied to beam-type structure TBM test bench |
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2018
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| JP2000170477A (en) * | 1998-12-08 | 2000-06-20 | Sato Kogyo Co Ltd | Cutter front load detecting method and device for shield boring machine, and shield boring machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080788A (en) * | 2019-06-06 | 2019-08-02 | 中国铁建重工集团股份有限公司 | A kind of shield machine roller cutter girff device |
| CN111220324A (en) * | 2020-01-22 | 2020-06-02 | 上海应用技术大学 | Calibration device and calibration method for MEMS micro-force-torque sensor |
| CN111473965A (en) * | 2020-04-22 | 2020-07-31 | 西安航空制动科技有限公司 | Semi-snap ring fatigue test assembly and fatigue test device |
| CN114295400A (en) * | 2021-12-30 | 2022-04-08 | 中铁工程装备集团有限公司 | Hob tool apron reliability test bench and test method |
| CN117664550A (en) * | 2023-12-15 | 2024-03-08 | 海兴和美汽车配件有限公司 | Leaf spring fatigue test device |
| CN117664550B (en) * | 2023-12-15 | 2024-06-11 | 海兴和美汽车配件有限公司 | Leaf spring fatigue test device |
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