CN108709822A - A kind of frictional wear test device and test method of shield cutter - Google Patents

A kind of frictional wear test device and test method of shield cutter Download PDF

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Publication number
CN108709822A
CN108709822A CN201810927750.1A CN201810927750A CN108709822A CN 108709822 A CN108709822 A CN 108709822A CN 201810927750 A CN201810927750 A CN 201810927750A CN 108709822 A CN108709822 A CN 108709822A
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CN
China
Prior art keywords
cutterhead
bottom plate
rack
pressure
horizontal line
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Pending
Application number
CN201810927750.1A
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Chinese (zh)
Inventor
朱宗铭
唐勇
庞佑霞
梁亮
许焰
刘辉
张昊
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Changsha University
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Changsha University
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Publication date
Application filed by Changsha University filed Critical Changsha University
Priority to CN201810927750.1A priority Critical patent/CN108709822A/en
Publication of CN108709822A publication Critical patent/CN108709822A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56Investigating resistance to wear or abrasion
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/06Special adaptations of indicating or recording means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/58Investigating machinability by cutting tools; Investigating the cutting ability of tools
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0053Cutting or drilling tools
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0676Force, weight, load, energy, speed or acceleration

Abstract

The present invention discloses a kind of frictional wear test device of shield cutter, including rack and transversing gear, transversing gear includes the bottom plate being installed in rack, and horizontal line lead screw is provided on bottom plate, horizontal line lead screw one end is connected with servo motor, and material disc is movably set on horizontal line lead screw;It is provided with cutterhead above material disc, cutterhead is installed on by variable-frequency motor in rack;Pressure mechanism with force snesor is set below bottom plate, and bottom panel side installs force snesor;Pressure mechanism can provide bottom plate and upward pressure.Invention additionally discloses a kind of friction wear test methods of shield cutter, including:Initialize force snesor;Assemble experimental rig;Starting variable-frequency motor makes cutterhead rotate, and starts to test;Calculate cutterhead rotation drag overall away from;Simulate traverse feed cutterhead stress size;Calculate size of the cutterhead by frictional force.The frictional wear test device and test method of shield cutter provided by the invention, simple in structure, easy for installation, pressure kick is small, test result is accurate.

Description

A kind of frictional wear test device and test method of shield cutter
Technical field
The present invention relates to shield cutter friction and wear test technical field, the friction more particularly to a kind of shield cutter is ground Damage experimental rig and test method.
Background technology
Shield-tunneling construction is widely used in the Tunnel Engineering such as city underground, railway, highway, municipal administration, water power, it has to surrounding Environment influences the advantages that small, high degree of automation, efficient and safety and environmental protection.According to geological conditions difference, using different type Shield machine carry out tunnelling, in pure ground consisting of hard rock mainly use tunneling boring hard rock mole, soft rock, texture stratum and Rock mainly uses earth pressure balanced shield, EPBS, slurry shield and hybrid shield with the mixing stratum of soil.
Cutter is shield machine " tooth ", is constantly squeezed excavation face rock or the soil body by cutter, mills, cuts It cuts, so that shield machine, which constantly advances, carries out tunnelling.Shield cutter includes mainly for the hobboing cutter of broken rock and for cutting Cut the two major classes cutters such as cutter, scraper, all edge doctors, center cutter and the dual-pilot cutter of the soil body.In the knife of tunneling boring hard rock mole Mainly hobboing cutter of the arrangement for broken rock, hobboing cutter generate rolling-sliding wear " firmly to hard " in tunneling process with excavation face rock stratum on disk Damage.Weak soil cutting tool is mainly arranged on the cutterhead of earth pressure balanced shield, EPBS, slurry shield and hybrid shield, is simutaneously arranged one Fixed number amount is used for the hobboing cutter of broken rock and broken bulk erratic boulder, and abrasion and hard rock of the cutter in soft rock, soil layer and mixing stratum are dug Abrasion into cutter in the process has great difference, and cutter is immersed in various each in earth pressure balance and slurry balance shield construction In the mud of sample, when cutter is acted on excavation face, it is filled with the particles such as various soil, sand, rock fragment between the two.
Report both at home and abroad many devices for studying abrasion and rock breaking mechanism of the hobboing cutter in hard rock tunneling process and Method, such as:《Rock cutting tool cutting test device》(Chinese patent 200920245585.8),《Rock cutting cutter is cut Cut test method》(Chinese patent 200910219276.8),《Double-hob experiment table cutter system》(Chinese patent 201010133136.1),《Cutter rock breaking mechanism and abrasion wear test machine》(Chinese patent 200810011968.9) and《Disc cutting tests in Colorado Red Granite:Implications forTBM performance prediction》(International Journal of Rock Mechanics and Mining Sciences, 2007 Year phase of volume 44 the 2nd) etc. patents and document.
However above-mentioned existing experimental rig has many deficiencies, as experimental rig pressure kick is big, cannot really reflect shield Structure actual condition.
Invention content
The object of the present invention is to provide a kind of frictional wear test device of shield cutter and test methods, above-mentioned to solve Problem of the existing technology, the device overall structure is simple, easy for installation, and pressure kick is small, test result is accurate.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of frictional wear test device of shield cutter, including rack and transversing gear, the transverse direction Mechanism includes the bottom plate being installed in the rack, and horizontal line lead screw, the connection of horizontal line lead screw one end are provided on the bottom plate There is servo motor, material disc is movably set on the horizontal line lead screw;Cutterhead is provided with above the material disc, the cutterhead is logical Variable-frequency motor is crossed to be installed in the rack;It is provided with the pressure mechanism including force snesor, the bottom plate below the bottom plate Side connects rotating disk and bottom plate along the installation of horizontal line lead screw direction there are two force snesor;The pressure mechanism can be to described Bottom plate offer upwards pressure.
Optionally, the pressure mechanism includes the mobile station being set to above the bottom plate, the mobile station top movable It is provided with rotating disk, the rotating disk is connect with the bottom plate, and the mobile station bottom is connected with guiding weighted table by guide post, The guiding weighted table and the mobile station are arranged on support column, are connect with the rotating disk at the top of the support column;It is described Support column both ends are symmetrical arranged there are two screw sleeve, and described screw sleeve one end is connect with the rack, and the other end is locked by U-shaped to be cut with scissors It is connected to the support column bottom;It is arranged with heavy duty on U-shaped lock and the support column being oriented between weighted table Spring.
Optionally, the variable-frequency motor is installed in the rack, and the shaft of the variable-frequency motor is connected by shaft coupling There are cutterhead bar, the bearing block of installation cutterhead bar to be embedded in rack, the cutterhead is installed below the cutterhead bar.
Optionally, rectangle rack is provided on the bottom plate, the horizontal line lead screw is arranged on the rectangle rack, the servo Motor is installed on the outside of the rectangle rack.
Optionally, it is arranged with sliding block on the horizontal line lead screw, the material disc is fixedly installed on the sliding block;The bottom Guide rail is offered on plate, the slider bottom is located on the guide rail.
Optionally, the cutterhead bar is connect with the cutterhead by Morse taper shank.
The present invention also provides a kind of friction wear test methods of shield cutter, mainly include the following steps:
Step 1;It is whether normal using the power measurement force snesor work of fixed size, initialize force snesor;
Step 2;Cutterhead is mounted on cutterhead bar, test specimen is mounted on material disc, rotary screw set, adjusts heavily loaded bullet Spring pressure, and then test specimen and cutterhead is made to contact, by force snesor, the gross pressure of contact is made to reach predetermined value;
Step 3;Starting variable-frequency motor makes cutterhead rotate, the pulling force of the force snesor of acquisition connection rotating disk and bottom plate, pressure Power compares the deviation of acquired power, when the pulling force of acquisition, pressure deviate≤2%, normal acquisition;Deviate more than 2% When, Inspection and maintenance system;According to distance away from cutterhead rotation center of the power of measurement and force-detecting position calculate cutterhead rotation drag overall away from;
Step 4;Start servo motor, simulates traverse feed cutterhead stress size;
Step 5;Size of the cutterhead by frictional force is calculated according to gross pressure and drag overall.
The present invention achieves following technique effect compared with the existing technology:
The frictional wear test device and test method of shield cutter provided by the invention have the following advantages that:
1) tangential admission mode:When the transverse shifting of test specimen, the speed of the movement velocity and cutterhead rolling contact point of test specimen The rolling speed of degree synthesis, aggregate velocity and cutterhead forms an angle, and realizes the oblique movement of cutterhead, i.e., cutterhead is in rolling rock By the axial force changed when test specimen, the movement of the cutterhead of angled installation is simulated.
2) frictional force detection mode:One force snesor, a pressure sensor are installed on rotatable tablet, because Two sensors are away from rotation center apart from identical, therefore two power are theoretically identical, stress can be used as to verify, avoided because of sensing Data caused by device failure are inaccurate;The stress for reducing single sensor, actually increases accuracy of detection.
3) steady load and guidance mode:It is loaded using heavy-duty springs, guide post orientation effectively determines loading direction, also keeps away Exempt from, because existing scheme is vibrated using suspension weight caused by change in friction force, to rub caused by causing transient load to be distorted Wipe the variation of power.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings Obtain other attached drawings.
Fig. 1 is the frictional wear test device overall structure schematic three dimensional views of shield cutter of the present invention;
Fig. 2 is the frictional wear test device cutterhead attachment structure schematic diagram of shield cutter of the present invention;
Fig. 3 is the frictional wear test device pressure mechanism schematic diagram of shield cutter of the present invention;
Fig. 4 is the frictional wear test device overall structure principal section schematic diagram of shield cutter of the present invention;
Wherein, 1 it is rack, 2 be bottom plate, 3 be horizontal line lead screw, 4 be servo motor, 5 be material disc, 6 be cutterhead, 7 is change Frequency motor, 8 be mobile station, 9 be rotating disk, 10 be guide post, 11 be oriented to weighted table, 12 be support column, 13 be screw sleeve, 14 be U-shaped lock, 15 be heavy-duty springs, 16 be shaft coupling, 17 be cutterhead bar, 18 be rectangle rack, 19 be force snesor.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of frictional wear test device of shield cutter and test methods, above-mentioned to solve Problem of the existing technology, the device overall structure is simple, easy for installation, and pressure kick is small, test result is accurate.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real Applying mode, the present invention is described in further detail.
The present invention provides a kind of frictional wear test device of shield cutter, as Figure 1-Figure 4, including rack 1 and cross To mechanism, transversing gear includes the bottom plate 2 being installed in rack 1, and horizontal line lead screw 3,3 one end of horizontal line lead screw are provided on bottom plate 2 It is connected with servo motor 4, material disc 5 is movably set on horizontal line lead screw 3;5 top of material disc is provided with cutterhead 6, and cutterhead 6 passes through Variable-frequency motor 7 is installed in rack 1;2 lower section of bottom plate is provided with the pressure mechanism with force snesor 19,2 side installing force of bottom plate Sensor 19;Pressure mechanism can provide bottom plate 2 and upward pressure.
It is further preferred that pressure mechanism includes the mobile station 8 for being set to 2 lower section of bottom plate, the setting of 8 top movable of mobile station There are rotating disk 9, rotating disk 9 to be connect with bottom plate 2,8 bottom of mobile station is connected with by guide post 10 and is oriented to weighted table 11, and stress is oriented to Platform 11 and mobile station 8 are arranged on support column 12, and 12 top of support column is connect with rotating disk 9;12 both ends of support column are symmetrically set It sets there are two screw sleeve 13,13 one end of screw sleeve is connect with rack 1, and the other end is articulated with 12 bottom of support column by U-shaped lock 14; It is arranged with heavy-duty springs 15 on U-shaped lock 14 and the support column 12 being oriented between weighted table 11.
Variable-frequency motor 7 is installed in rack 1, and the shaft of variable-frequency motor 7 is connected with cutterhead bar 17, cutterhead by shaft coupling 16 17 lower section of bar is equipped with cutterhead 6.Rectangle rack 18 is provided on bottom plate 2, horizontal line lead screw 3 is arranged on rectangle rack 18, servo motor 4 It is installed on 18 outside of rectangle rack.Sliding block is arranged on horizontal line lead screw 3, material disc 5 is fixedly installed on sliding block;It is opened up on bottom plate 2 There are guide rail, slider bottom to be located on guide rail.Cutterhead bar 17 is connect with cutterhead 6 by Morse taper shank.
The present invention also provides a kind of friction wear test method of shield cutter, this method mainly includes the following steps:
Step 1;It is whether normal using the power measurement force snesor work of fixed size, initialize force snesor;
Step 2;Cutterhead 6 is mounted on cutterhead bar 17, test specimen is mounted on material disc 5, and rotary screw set 13 is adjusted 15 pressure of heavy-duty springs, and then test specimen and cutterhead 6 is made to contact, by force snesor, the gross pressure of contact is made to reach predetermined value;
Step 3;Starting variable-frequency motor makes cutterhead 6 rotate, and acquires pulling force, the pressure of force snesor, compares acquired power Deviation, when the pulling force of acquisition, pressure deviate≤2% when, normal acquisition;When deviating more than 2%, Inspection and maintenance system;Root According to measurement power and force-detecting position away from centre distance calculate cutterhead 6 rotate drag overall away from;
Step 4;Start servo motor 4,6 stress size of simulation traverse feed cutterhead;
Step 5;Size of the cutterhead 6 by frictional force is calculated according to gross pressure and drag overall;Check test specimen pattern, weight loss, Test tool marks;Detect 6 state of wear of cutterhead, weight loss.
Specifically, screw sleeve 13 is connected respectively at left-right rotary screw rod, the compressible heavily loaded bullet of screw sleeve 13 is turned by spanner Spring 15, heavy-duty springs 15 are transmitted to power and are oriented to weighted table 11, are oriented to weighted table 11 by symmetrically arranged four guide posts 10 power It is uniform to pass to mobile station 8, and then pressure needed for test specimen is provided;Rotating disk 9 is rotatably connected with the bottom plate 2 of transversing gear, can Ensure that the rotary motion being likely to occur when work, rotating disk 9 are connect with the bottom plate 2 of transversing gear by two force snesors, from And obtain the frictional force generated when cutterhead movement.
The cutterhead of the present invention can be adjusted according to the needs the centre-to-centre spacing of distribution blade, change blade axis direction, can also be real Existing cutterhead movement velocity direction radially forms an angle with cutterhead, simulates the movement of shield.Tangential admission, by aggregate velocity side To change, the movement of the cutterhead of angled installation is simulated.Fixed force snesor avoids what existing frictional force detection used Inaccurate defect caused by stone dead wire, because steel wire may be wrapped on axis, caused additional not confirmable frictional force;Equivalence rubs It wipes power verification and improves accuracy of detection.Steady load and guidance mode:Guide post can ensure sensor by normal pressure, avoid because carrying Loading error caused by lotus direction change.
Specific case is applied in the present invention, and principle and implementation of the present invention are described, above example Illustrate the method and its core concept for being merely used to help understand the present invention;Meanwhile for those of ordinary skill in the art, according to According to the thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification It should not be construed as limiting the invention.

Claims (7)

1. a kind of frictional wear test device of shield cutter, it is characterised in that:Including rack and transversing gear, the transverse direction machine Structure includes the bottom plate being installed in the rack, and horizontal line lead screw is provided on the bottom plate, and horizontal line lead screw one end is connected with Servo motor is movably set with material disc on the horizontal line lead screw;It is provided with cutterhead above the material disc, the cutterhead passes through Variable-frequency motor is installed in the rack;It is provided with the pressure mechanism including force snesor, the bottom plate side below the bottom plate Face connects rotating disk and bottom plate along the installation of horizontal line lead screw direction there are two force snesor;The pressure mechanism can be to the bottom Plate offer upwards pressure.
2. the frictional wear test device of shield cutter according to claim 1, it is characterised in that:The pressure mechanism packet Include the mobile station being set to above the bottom plate, the mobile station top movable is provided with rotating disk, the rotating disk with it is described Bottom plate connects, and the mobile station bottom is connected with guiding weighted table by guide post, and the guiding weighted table and the mobile station are worn On support column, it is connect with the rotating disk at the top of the support column;The support column both ends are arranged symmetrically, and there are two screw rods Set, described screw sleeve one end are connect with the rack, and the other end is articulated with the support column bottom by U-shaped lock;Positioned at the U Shape is locked is arranged with heavy-duty springs on the support column between the guiding weighted table.
3. the frictional wear test device of shield cutter according to claim 1, it is characterised in that:The variable-frequency motor peace Loaded in the rack, the shaft of the variable-frequency motor is connected with cutterhead bar by shaft coupling, and the bearing block for installing cutterhead bar is embedding Enter rack, the cutterhead is installed below the cutterhead bar.
4. the frictional wear test device of shield cutter according to claim 1, it is characterised in that:It is arranged on the bottom plate There are rectangle rack, the horizontal line lead screw to be arranged on the rectangle rack, the servo motor is installed on the outside of the rectangle rack.
5. the frictional wear test device of shield cutter according to claim 4, it is characterised in that:On the horizontal line lead screw It is arranged with sliding block, the material disc is fixedly installed on the sliding block;Guide rail, the slider bottom position are offered on the bottom plate In on the guide rail.
6. the frictional wear test device of shield cutter according to claim 3, it is characterised in that:The cutterhead bar and institute Cutterhead is stated to connect by Morse taper shank.
7. a kind of friction wear test method of shield cutter, it is characterised in that:Include the following steps:
Step 1;It is whether normal using the power measurement force snesor work of fixed size, initialize force snesor;
Step 2;Cutterhead is mounted on cutterhead bar, test specimen is mounted on material disc, rotary screw set, adjusts heavy-duty springs pressure Power, and then test specimen and cutterhead is made to contact, by force snesor, the gross pressure of contact is made to reach predetermined value;
Step 3;Starting variable-frequency motor makes cutterhead rotate, the pulling force of the force snesor of acquisition connection rotating disk and bottom plate, pressure, The deviation for comparing acquired power, when the pulling force of acquisition, pressure deviate≤2%, normal acquisition;When deviating more than 2%, inspection Look into maintenance system;According to distance away from cutterhead rotation center of the power of measurement and force-detecting position calculate cutterhead rotation drag overall away from;
Step 4;Start servo motor, simulates traverse feed cutterhead stress size;
Step 5;Size of the cutterhead by frictional force is calculated according to gross pressure and drag overall.
CN201810927750.1A 2018-08-15 2018-08-15 A kind of frictional wear test device and test method of shield cutter Pending CN108709822A (en)

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CN201810927750.1A CN108709822A (en) 2018-08-15 2018-08-15 A kind of frictional wear test device and test method of shield cutter

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Application Number Priority Date Filing Date Title
CN201810927750.1A CN108709822A (en) 2018-08-15 2018-08-15 A kind of frictional wear test device and test method of shield cutter

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112462687A (en) * 2020-11-18 2021-03-09 大连理工大学 Force control press-in device for measuring cutter abrasion based on reverse morphology method
CN117589625A (en) * 2024-01-19 2024-02-23 山东鑫沃德智能装备有限公司 Hard alloy shield cutter strength detection device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102901685A (en) * 2012-10-23 2013-01-30 中南大学 Cutter friction abrasion testing machine for simulating shield construction conditions, testing cutter and testing method
CN103969141A (en) * 2013-01-29 2014-08-06 中南大学 A hard rock hobbing cutter rock breaking characteristic testing device
CN104062197A (en) * 2014-07-14 2014-09-24 中南大学 Testing device for abrasion property of hard rock hobbing cutter
KR20160066616A (en) * 2014-12-02 2016-06-13 현대건설주식회사 Apparatus and method for evaluating wear and abrasion of TBM disc cutter
CN108254277A (en) * 2018-02-02 2018-07-06 中铁隧道局集团有限公司 A kind of High-efficient Hobbing Cutter denudes experimental provision
CN208520712U (en) * 2018-08-15 2019-02-19 长沙学院 A kind of frictional wear test device of shield cutter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102901685A (en) * 2012-10-23 2013-01-30 中南大学 Cutter friction abrasion testing machine for simulating shield construction conditions, testing cutter and testing method
CN103969141A (en) * 2013-01-29 2014-08-06 中南大学 A hard rock hobbing cutter rock breaking characteristic testing device
CN104062197A (en) * 2014-07-14 2014-09-24 中南大学 Testing device for abrasion property of hard rock hobbing cutter
KR20160066616A (en) * 2014-12-02 2016-06-13 현대건설주식회사 Apparatus and method for evaluating wear and abrasion of TBM disc cutter
CN108254277A (en) * 2018-02-02 2018-07-06 中铁隧道局集团有限公司 A kind of High-efficient Hobbing Cutter denudes experimental provision
CN208520712U (en) * 2018-08-15 2019-02-19 长沙学院 A kind of frictional wear test device of shield cutter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112462687A (en) * 2020-11-18 2021-03-09 大连理工大学 Force control press-in device for measuring cutter abrasion based on reverse morphology method
CN117589625A (en) * 2024-01-19 2024-02-23 山东鑫沃德智能装备有限公司 Hard alloy shield cutter strength detection device
CN117589625B (en) * 2024-01-19 2024-03-29 山东鑫沃德智能装备有限公司 Hard alloy shield cutter strength detection device

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