CN106706181A - Hob three-way force measurement tool holder applied to beam-type structure TBM test bench - Google Patents
Hob three-way force measurement tool holder applied to beam-type structure TBM test bench Download PDFInfo
- Publication number
- CN106706181A CN106706181A CN201611005215.8A CN201611005215A CN106706181A CN 106706181 A CN106706181 A CN 106706181A CN 201611005215 A CN201611005215 A CN 201611005215A CN 106706181 A CN106706181 A CN 106706181A
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- CN
- China
- Prior art keywords
- force
- hobboing cutter
- strain
- meter set
- knife rest
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a hob three-way force measurement tool holder applied to a beam-type structure TBM test bench. The tool holder is characterized in that a mounting bracket and the tool holder form a whole body through four rectangular column beams which are symmetrically arranged; a disc hob and a wedge block are matched and fixed on the tool holder; each column beam comprises a second side, a first side and a third side, wherein the first side and the third side are opposite; a strain gauge group A comprises four strain gauges which are attached to the first sides of four column beams to form a bridge; when the hob is stressed and deformed, the strain gauges on the column beams are squeezed; the voltage output of a resistor bridge circuit is affected, and the magnitude of the rolling direction force of the disc hob is reflected; a strain gauge group B is attached to the second sides of four column beams to measure the magnitude of the lateral force of the disc hob; and a strain gauge group C is attached to the third sides of four column beams to measure the magnitude of the vertical force of the disc hob. According to the invention, the magnitude of the three-way force of the disc hob under the rolling rock breaking effect can be measured; and the bending moment of the measurement tool holder under rolling force and lateral force is short; and the accuracy is high.
Description
Technical field
The present invention relates to a kind of for Tunnel Engineering, the hobboing cutter three-dimensional device for measuring force of underground engineering field, specific design one
The TBM experimental benches for planting girder structure measure knife rest with hobboing cutter three axis force.
Background technology
Three-dimensional force transducer can measure three components of power in three dimensions, in robot, many necks such as automatically control
Domain all has been widely used.TBM is used as the large-scale heading equipment in tunnel, subway construction, and hobboing cutter force-bearing situation thereon is direct
Influence operating efficiency and the life-span of cutter.Three received strength situation when measurement hobboing cutter works, to improving efficiency, extends making for hobboing cutter
There is important meaning with the life-span.
Current three-dimensional device for measuring force is broadly divided into pillar, beam type and cyclic structure etc..
Nanjing University of Technology patent of invention CN 201772958 U, it is entitled：Three-dimensional force transducer.It is vertically connected with plate
Between the sensor core including shell is installed, the upper and lower side in core body is respectively posted in 90 ° of equally distributed four foil gauges in angle,
Each foil gauge that its upper and lower side is pasted vertically corresponds to each foil gauge for being pasted of middle part and therewith in 45 ° of angles.Tri- directions of X, Y, Z
Interface is drawn by signal to connect with acquisition instrument, realize that three axis force is measured respectively；China Plane Intensity Research Institute's patent of invention
CN103308233A, it is entitled：A kind of three-dimensional platform device for force measurement.This device fixes 2N between installation table top and mounting base
Individual equidistant three-dimensional force transducer, to measure three direction load when testpieces makes impact with the ground.
Southeast China University patent of invention CN 102338675A, it is entitled：A kind of three-dimensional force sensor.This device is N-shaped beam type
Structure, two rectangle vertical beam posts are provided with groove between all opening mutually orthogonal every group of through hole of two groups of cylindrical holes, in crossbeam
Foil gauge is all posted in the place that upper and through hole intersects with rectangular column, thus form two 2 D force sensors and a crossbeam knot
The three-dimensional force measuring device of structure；Beijing Satellite Environment Engineering Research Institute patent of invention CN 103822769A, it is entitled：Three-dimensional is surveyed
Power loop device.N number of uniform point is installed between the upper bottom surface of the lower frock of the upper frock and hollow positive truncated conical shape of toroidal
The piezoelectric type three-dimensional force transducer of cloth, the demand for ensuring three-dimensional dynamometry.
At present, numerous studies have been done to TBM hob three-dimensional force measuring device by many scholars both domestic and external and university.Document
[Tunnelling and Underground Space Technology:Cutter force measurement on
Tunnel boring machines System design] Tech Uni Wien's engineering design and the Logistics Engineering mentioned grind
Study carefully institute and devise rock tunnel(ling) machine dynamometric system.The entirety that knife rest, cutter ring, wheel hub and bearing are formed is fixed by cone shaped countersink bolt
In cylindricality saddle system, hobboing cutter stress is measured by the three-dimensional force transducer on bolt indirectly.University Of Tianjin's mechanical engineering
Institute's mechanical system delivers periodical 1001-4888 (2015) 03-0373-08：A kind of Research on experimental methods for measuring TBM hob stress.
The central shaft of knife rest is fixed between locking wedge block and cushion block, and strain ga(u)ge is pasted with cushion block.Squeezed when hobboing cutter receives external force
During pressure, central shaft can extrude the strain gauge on cushion block, so as to indirectly measure the size of hobboing cutter institute stress.Two methods above
All be by measuring the power on bearing so as to measure hobboing cutter stress indirectly, but tools for bolts ' pretension process can inherently be produced to bearing
A raw power, in hobboing cutter traveling process, bolt can produce certain vibrations, also have a great impact to shaft strength.It is Central-South
University's design experiment device, patent of invention CN101446537A is entitled：A kind of adjustable multi-hob rock cutting fragmentation experiment dress
Put.The mutually orthogonal Driven by Hydraulic Cylinder Tu Cang motions of X, Y, Z three-dimensional, hobboing cutter is connected below the vertical hydraulic cylinder being fixed on crossbeam
Mounting bracket, mounting bracket is installed below three-dimensional force transducer, and disk cutter is connected on the hob head of the lower section of three-dimensional force transducer.
Hobboing cutter actual loading situation is analyzed by three-dimensional force transducer.This mounting means makes the installation that sensor is located above hob head
Excessive with hobboing cutter spacing on frame, the moment of flexure of growth directly results in measurement error and be exaggerated, and it is received from accurate response hobboing cutter
Power situation.
In sum, the three axis force produced when can accurately measure TBM hob broken rock, reduces influence of the various interference to measuring
It is problem demanding prompt solution.Proposition of the invention can be satisfactorily resolved to above-mentioned problem.
The content of the invention
A kind of TBM experimental benches it is an object of the invention to provide girder structure measure knife rest with hobboing cutter three axis force.
A kind of TBM experimental benches of girder structure of the present invention measure knife rest with hobboing cutter three axis force, by post beam 1, post beam 2, post beam
3rd, post beam 4, knife rest, disk cutter, wedge, mounting bracket, mounting hole, countersunk bolts, Strain Meter Set A, Strain Meter Set B, strain
Meter group C is constituted.
The mounting bracket (8) is integrally formed by the four post beams (1,2,3,4) being arranged symmetrically with knife rest (5).Dish type is rolled
Knife (6) coordinates with wedge (7), is fixed on knife rest (5) by countersunk bolts (10).Strain Meter Set A (11), Strain Meter Set B
(12), Strain Meter Set C (13) is pasted onto on four post beams (1,2,3,4), formed hobboing cutter rock break-off process in measure vertical force,
Three knife rests of direction force of rolling force and side force.
The Strain Meter Set A (11), Strain Meter Set B (12), Strain Meter Set C (13) are affixed directly to four posts respectively
The first side (1001,2001,3001,4001) of beam, second side (1002,2002,3002,4002) and the 3rd side
On (1003,2003,3003,4003), in disk cutter rolling broken-rock, the measurement knife rest is curved by rolling force and side force
Square is short, and measurement accuracy is high.
The Strain Meter Set A (11) is made up of 4 strain resistors (101,201,301,401), is respectively adhered on described
In four first sides (1001,2001,3001,4001) of post beam (1,2,3,4).When hobboing cutter is deformed by rolling force
When, the resistance of strain gauge can change so that the voltage output U1 of rotating direction resistance bridge changes, so as to reflect rolling
The size of rolling force suffered by knife.
The Strain Meter Set B (12) is made up of 4 strain resistors (102,202,302,402), is respectively adhered on described
In four second sides (1002,2002,3002,4002) of post beam (1,2,3,4).When hobboing cutter is deformed by side force
When, the resistance of strain gauge can change so that the voltage output U2 of lateral resistance bridge changes, so as to reflect hobboing cutter institute
By the size of side force.
The Strain Meter Set C (13) is made up of 4 strain resistors (103,203,303,403), is respectively adhered on described
On four the 3rd sides (1003,2003,3003,4003) of post beam (1,2,3,4).When hobboing cutter is deformed by pressure at right angle
When, the resistance of strain gauge can change so that the voltage output U3 of vertical direction resistance bridge changes, so as to reflect rolling
The size of vertical direction pressure suffered by knife.
The features of the present invention and beneficial effect are：
1. using by Strain Meter Set into three-dimensional device for measuring force hobboing cutter stress is detected, with current existing major part
Unidirectional hobboing cutter strained detection device is compared, and three-dimensional force sensor has certainty of measurement higher.
2. strain gauge is affixed directly on the post beam of hobboing cutter assembly, is not used in designing three axis force biography outside hobboing cutter assembly
Sensor mounting bracket, hence it is evident that shorten moment of flexure, error is preferably minimized.
3. present apparatus simple structure, easily manufactured.Four symmetrical post beams are separately designed in the bottom of crossbeam, by strain gauge
It is affixed directly on post beam.The process is simple of design post beam and crossbeam, therefore this device is suitable for large-scale promotion.
Brief description of the drawings
Fig. 1 is dimensional structure diagram A of the invention.
Fig. 2 is dimensional structure diagram B of the invention.
Fig. 3 is the strain paster figure on four post beams.
Fig. 4 is the group bridge mode figure of the Strain Meter Set A (11).
Fig. 5 is the group bridge mode figure of the Strain Meter Set B (12).
Fig. 6 is the group bridge mode figure of the Strain Meter Set C (13).
Specific embodiment
Structure of the invention is described further below in conjunction with accompanying drawing and by specific embodiment.It should be noted that this reality
Example is narrative, rather than limited, it is impossible to limit protection scope of the present invention with this.
A kind of TBM experimental benches of girder structure measure knife rest with hobboing cutter three axis force, by post beam 1, post beam 2, post beam 3, post beam
4th, knife rest 5, disk cutter 6, wedge 7, mounting bracket 8, mounting hole 9, countersunk bolts 10 (as shown in Figure 1, Figure 2), Strain Meter Set A11
(such as Fig. 3, Fig. 4), Strain Meter Set B12 (such as Fig. 3, Fig. 5), Strain Meter Set C13 (such as Fig. 3, Fig. 6) composition.Mounting bracket (8) is by right
Four post beams (1,2,3,4) of arrangement are claimed to be integrally formed with knife rest (5).Disk cutter (6) coordinates with wedge (7), by counterbore
Bolt (10) is fixed on knife rest (5).Strain Meter Set A (11), Strain Meter Set B (12), Strain Meter Set C (13) are pasted onto described four
On root post beam (1,2,3,4), measurement vertical force, three knives of direction force of rolling force and side force in hobboing cutter rock break-off process are formed
Frame.
The post beam (1,2,3,4) includes second side (1002,2002,3002,4002) and the first relative side
Face (1001,2001,3001,4001) and the 3rd side (1003,2003,3003,4003) (such as Fig. 3).Strain Meter Set A (11) is
It is made up of 4 strain resistors (101,201,301,401), is respectively adhered on the first side of four post beams (1,2,3,4)
On (1001,2001,3001,4001).When hobboing cutter is deformed by rolling force, the resistance of strain gauge can change, and make
The voltage output U1 for obtaining rotating direction resistance bridge changes, so as to reflect the size of rolling force suffered by hobboing cutter.
Strain Meter Set B (12) is made up of 4 strain resistors (102,202,302,402), is respectively adhered on described four
In the second side (1002,2002,3002,4002) of post beam (1,2,3,4).When hobboing cutter is deformed by side force, should
The resistance for becoming meter can change so that the voltage output U2 of lateral resistance bridge changes, so as to reflect side suffered by hobboing cutter
To the size of power.
Strain Meter Set C (13) is made up of 4 strain resistors (103,203,303,403), is respectively adhered on described four
On 3rd side (1003,2003,3003,4003) of post beam (1,2,3,4).When hobboing cutter is deformed by pressure at right angle,
The resistance of strain gauge can change so that the voltage output U3 of vertical direction resistance bridge changes, so as to reflect hobboing cutter
The size of suffered vertical direction pressure.
Claims (5)
1. a kind of TBM experimental benches of girder structure measure knife rest with hobboing cutter three axis force.Including post beam 1, post beam 2, post beam 3, post beam
4th, knife rest, disk cutter, wedge, mounting bracket, mounting hole, countersunk bolts, Strain Meter Set A, Strain Meter Set B, Strain Meter Set C.
It is characterized in that：The mounting bracket (8) is integrally formed by the four post beams (1,2,3,4) being arranged symmetrically with knife rest (5).Dish type
Hobboing cutter (6) coordinates with wedge (7), is fixed on knife rest (5) by countersunk bolts (10).Strain Meter Set A (11), Strain Meter Set B
(12), Strain Meter Set C (13) is pasted onto on four post beams (1,2,3,4), formed hobboing cutter rock break-off process in measure vertical force,
Three knife rests of direction force of rolling force and side force.
2. knife rest is measured with hobboing cutter three axis force according to a kind of TBM experimental benches of the girder structure described in claim 1, its feature exists
In：The Strain Meter Set A (11), Strain Meter Set B (12), Strain Meter Set C (13) are affixed directly to four post beams respectively
First side (1001,2001,3001,4001), second side (1002,2002,3002,4002) and the 3rd side (1003,
2003rd, 3003, on 4003), in disk cutter rolling broken-rock, the measurement knife rest is short by the moment of flexure of rolling force and side force,
Measurement accuracy is high.
3. knife rest is measured with hobboing cutter three axis force according to a kind of TBM experimental benches of the girder structure described in claim 1, its feature exists
In：The Strain Meter Set A (11) is made up of 4 strain resistors (101,201,301,401), is respectively adhered on four posts
In the first side (1001,2001,3001,4001) of beam (1,2,3,4).When hobboing cutter is deformed by rolling force, strain
The resistance of meter can change so that the voltage output U1 of rotating direction resistance bridge changes, so as to reflect suffered by hobboing cutter
The size of rolling force.
4. knife rest is measured with hobboing cutter three axis force according to a kind of TBM experimental benches of the girder structure described in claim 1, its feature exists
In：The Strain Meter Set B (12) is made up of 4 strain resistors (102,202,302,402), is respectively adhered on four posts
In the second side (1002,2002,3002,4002) of beam (1,2,3,4).When hobboing cutter is deformed by side force, strain
The resistance of meter can change so that the voltage output U2 of lateral resistance bridge changes, so as to reflect lateral suffered by hobboing cutter
The size of power.
5. knife rest is measured with hobboing cutter three axis force according to a kind of TBM experimental benches of the girder structure described in claim 1, its feature exists
In：The Strain Meter Set C (13) is made up of 4 strain resistors (103,203,303,403), is respectively adhered on four posts
On 3rd side (1003,2003,3003,4003) of beam (1,2,3,4).When hobboing cutter is deformed by pressure at right angle, should
The resistance for becoming meter can change so that the voltage output U3 of vertical direction resistance bridge changes, so as to reflect hobboing cutter institute
By the size of vertical direction pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005215.8A CN106706181A (en) | 2017-04-05 | 2017-04-05 | Hob three-way force measurement tool holder applied to beam-type structure TBM test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005215.8A CN106706181A (en) | 2017-04-05 | 2017-04-05 | Hob three-way force measurement tool holder applied to beam-type structure TBM test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106706181A true CN106706181A (en) | 2017-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611005215.8A Pending CN106706181A (en) | 2017-04-05 | 2017-04-05 | Hob three-way force measurement tool holder applied to beam-type structure TBM test bench |
Country Status (1)
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| CN (1) | CN106706181A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462358A (en) * | 2017-09-19 | 2017-12-12 | 徐工集团工程机械有限公司 | Simulating test device for surface milling cutter |
| CN109374163A (en) * | 2018-12-24 | 2019-02-22 | 天津大学 | A kind of ditrysian type strain sensitive core for force snesor |
| CN109374268A (en) * | 2018-05-02 | 2019-02-22 | 中南大学 | A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device |
| CN109974995A (en) * | 2019-04-18 | 2019-07-05 | 中铁隧道局集团有限公司 | A kind of TBM experimental bench with combined type force measuring structure |
| CN110006564A (en) * | 2019-04-18 | 2019-07-12 | 中铁隧道局集团有限公司 | A kind of combined type hobboing cutter three axis force force measuring structure |
| CN111091747A (en) * | 2019-12-31 | 2020-05-01 | 西南交通大学 | TBM hobbing cutter multifunctional test bed |
| CN115290492A (en) * | 2022-08-01 | 2022-11-04 | 山东大学 | Track-adjustable shield hob stress measuring device and method |
| CN117345264A (en) * | 2023-12-06 | 2024-01-05 | 中国矿业大学 | Hobbing cutter load monitoring intelligent cutter head, cutter head control system and control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446537A (en) * | 2008-11-10 | 2009-06-03 | 中南大学 | Adjustable multi-hob rock cutting fragmentation test means |
| CN201548356U (en) * | 2009-12-10 | 2010-08-11 | 中国直升机设计研究所 | Column type three-dimensional force transducer |
| CN101947743A (en) * | 2010-09-17 | 2011-01-19 | 浙江工业大学 | Broaching force test device |
| CN103698075A (en) * | 2013-12-30 | 2014-04-02 | 天津大学 | Device for online detection for stress of hobbing cutter of tunnel boring machine |
| KR20160038230A (en) * | 2014-09-30 | 2016-04-07 | 현대건설주식회사 | Rotation cutting machine, system, method for evaluating driving performance of TBM and designing cutterhead of TBM |
| CN106525294A (en) * | 2016-11-15 | 2017-03-22 | 中南大学 | Three-directional force calibration device and method for TBM (Tunnel Boring Machine) hob |
-
2017
- 2017-04-05 CN CN201611005215.8A patent/CN106706181A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446537A (en) * | 2008-11-10 | 2009-06-03 | 中南大学 | Adjustable multi-hob rock cutting fragmentation test means |
| CN201548356U (en) * | 2009-12-10 | 2010-08-11 | 中国直升机设计研究所 | Column type three-dimensional force transducer |
| CN101947743A (en) * | 2010-09-17 | 2011-01-19 | 浙江工业大学 | Broaching force test device |
| CN103698075A (en) * | 2013-12-30 | 2014-04-02 | 天津大学 | Device for online detection for stress of hobbing cutter of tunnel boring machine |
| KR20160038230A (en) * | 2014-09-30 | 2016-04-07 | 현대건설주식회사 | Rotation cutting machine, system, method for evaluating driving performance of TBM and designing cutterhead of TBM |
| CN106525294A (en) * | 2016-11-15 | 2017-03-22 | 中南大学 | Three-directional force calibration device and method for TBM (Tunnel Boring Machine) hob |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462358A (en) * | 2017-09-19 | 2017-12-12 | 徐工集团工程机械有限公司 | Simulating test device for surface milling cutter |
| CN107462358B (en) * | 2017-09-19 | 2023-08-01 | 江苏徐工工程机械研究院有限公司 | Simulation test device for surface milling cutter |
| CN109374268A (en) * | 2018-05-02 | 2019-02-22 | 中南大学 | A kind of shield machine/TBM hob tool apron fatigue stress and life testing method and its device |
| CN109374163A (en) * | 2018-12-24 | 2019-02-22 | 天津大学 | A kind of ditrysian type strain sensitive core for force snesor |
| CN109974995A (en) * | 2019-04-18 | 2019-07-05 | 中铁隧道局集团有限公司 | A kind of TBM experimental bench with combined type force measuring structure |
| CN110006564A (en) * | 2019-04-18 | 2019-07-12 | 中铁隧道局集团有限公司 | A kind of combined type hobboing cutter three axis force force measuring structure |
| CN110006564B (en) * | 2019-04-18 | 2020-08-28 | 中铁隧道局集团有限公司 | Combined type hobbing cutter three-dimensional force measuring structure |
| CN111091747A (en) * | 2019-12-31 | 2020-05-01 | 西南交通大学 | TBM hobbing cutter multifunctional test bed |
| CN111091747B (en) * | 2019-12-31 | 2023-11-03 | 西南交通大学 | TBM hob multifunctional test bed |
| CN115290492A (en) * | 2022-08-01 | 2022-11-04 | 山东大学 | Track-adjustable shield hob stress measuring device and method |
| CN117345264A (en) * | 2023-12-06 | 2024-01-05 | 中国矿业大学 | Hobbing cutter load monitoring intelligent cutter head, cutter head control system and control method |
| CN117345264B (en) * | 2023-12-06 | 2024-02-13 | 中国矿业大学 | Hobbing cutter load monitoring intelligent cutter head, cutter head control system and control method |
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