CN208520712U - A kind of frictional wear test device of shield cutter - Google Patents
A kind of frictional wear test device of shield cutter Download PDFInfo
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- CN208520712U CN208520712U CN201821312580.8U CN201821312580U CN208520712U CN 208520712 U CN208520712 U CN 208520712U CN 201821312580 U CN201821312580 U CN 201821312580U CN 208520712 U CN208520712 U CN 208520712U
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- bottom plate
- cutterhead
- rack
- screw rod
- test device
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Abstract
The utility model 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 screw rod is provided on bottom plate, horizontal line screw rod one end is connected with servo motor, is movably set with material disc on horizontal line screw rod；It is provided with cutterhead above material disc, cutterhead is installed in rack by variable-frequency motor；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.The frictional wear test device of shield cutter provided by the utility model, structure is simple, easy for installation, and pressure kick is small, test result is accurate.
Description
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.
Background technique
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, high-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
Earth pressure balanced shield, EPBS, slurry shield and hybrid shield are mainly used in the mixing stratum of rock and 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 mainly includes 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 arrangement is used for the hobboing cutter of broken rock on disk, and hobboing cutter generates rolling-sliding wear " firmly to hard " in tunneling process with excavation face rock stratum
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 and excavation face act on, 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 for TBM 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.
Summary of the invention
The object of the present invention is to provide a kind of frictional wear test devices of shield cutter, are deposited with solving the above-mentioned prior art
The problem of, 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 screw rod, the connection of horizontal line screw rod one end are provided on the bottom plate
There is servo motor, is movably set with material disc on the horizontal line screw rod；Cutterhead is provided with above the material disc, the cutterhead is logical
Variable-frequency motor is crossed to be installed in the rack；The pressure mechanism including force snesor, the bottom plate are provided with below the bottom plate
Side connects rotating disk and bottom plate there are two force snesor along the installation of horizontal line screw rod direction；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 at the top of the support column with the rotating disk；It is described
Support column both ends are symmetrical arranged there are two screw rod set, and the screw rod covers one end and 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；Heavy duty is arranged on the support column between U-shaped lock and the guiding 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 is cutterhead bar, the bearing block of installation cutterhead bar is embedded in rack, is equipped with the cutterhead below the cutterhead bar.
Optionally, rectangle rack is provided on the bottom plate, the horizontal line screw rod 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 screw rod, 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 are contacted, by force snesor, the gross pressure of contact is made to reach predetermined value；
Step 3；Starting variable-frequency motor rotates cutterhead, the pulling force of the force snesor of acquisition connection rotating disk and bottom plate, pressure
Power, the deviation of power more collected, when the pulling force of acquisition, pressure deviate≤2%, normal acquisition；When deviating more than 2%,
Inspection and maintenance system；Distance according to the power of measurement and force-detecting position away from cutterhead rotation center calculates cutterhead and rotates drag overall square；
Step 4；Start servo motor, simulates traverse feed cutterhead stress size；
Step 5；Cutterhead is calculated by the size of frictional force according to gross pressure and drag overall.
The present invention achieves following technical effect compared with the existing technology:
The frictional wear test device and test method of shield cutter provided by the invention have the advantages that
1) tangential admission mode: when the transverse shifting of test specimen, the movement velocity of test specimen and the speed of cutterhead rolling contact point
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: installing a force snesor, a pressure sensor on rotatable plate, because
Two sensors are away from rotation center apart from identical, therefore two power are theoretically identical, can be used as stress verification, avoid because of sensing
Data inaccuracy caused by device failure；The stress for reducing single sensor, actually increases detection accuracy.
3) steady load and guidance mode: being loaded using heavy-duty springs, and guide post orientation effectively determines loading direction, also keeps away
Exempt from because existing scheme is rubbed caused by causing transient load to be distorted using suspension weight because vibrating caused by change in friction force
Wipe the variation of power.
Detailed description of the invention
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 invention
Example, for those of ordinary skill in the art, without any 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 screw rod, 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 guiding weighted table, 12 be support column, 13 be screw rod set, 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 embodiment
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 description, 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, with reference to the accompanying drawing 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 screw rod 3,3 one end of horizontal line screw rod are provided on bottom plate 2
It is connected with servo motor 4, material disc 5 is movably set on horizontal line screw rod 3；Cutterhead 6 is provided with above material disc 5, cutterhead 6 passes through
Variable-frequency motor 7 is installed in rack 1；The pressure mechanism with force snesor 19,2 side installing force of bottom plate are provided with below bottom plate 2
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 is rotating disk 9, rotating disk 9 is connect with bottom plate 2, and 8 bottom of mobile station is connected with guiding weighted table 11 by guide post 10, is oriented to stress
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 rod set 13, screw rod covers 13 one end and connect with rack 1, and the other end is articulated with 12 bottom of support column by U-shaped lock 14；
Heavy-duty springs 15 are arranged on support column 12 between U-shaped lock 14 and guiding 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
Cutterhead 6 is installed below bar 17.Rectangle rack 18 is provided on bottom plate 2, horizontal line screw rod 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 screw rod 3, material disc 5 is fixedly installed on sliding block；It is opened up on bottom plate 2
There is guide rail, slider bottom is 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 are contacted, by force snesor, the gross pressure of contact is made to reach predetermined value；
Step 3；Starting variable-frequency motor rotates cutterhead 6, acquires pulling force, the pressure of force snesor, power more collected
Deviation, when the pulling force of acquisition, pressure deviate≤2% when, normal acquisition；When deviating more than 2%, Inspection and maintenance system；According to
The power and force-detecting position of measurement calculate cutterhead 6 away from centre distance and rotate drag overall square；
Step 4；Start servo motor 4, simulates 6 stress size of traverse feed cutterhead；
Step 5；Cutterhead 6 is calculated by the size of frictional force 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 rod set 13 is connected respectively at left-right rotary screw rod, the compressible heavily loaded bullet of screw rod set 13 is turned by spanner
Power is transmitted to guiding weighted table 11 by spring 15, heavy-duty springs 15, is oriented to weighted table 11 by symmetrically arranged four guide posts 10 power
Mobile station 8, and then pressure needed for offer test specimen are uniformly provided；The bottom plate 2 of rotating disk 9 and transversing gear, which rotates, to be connected, can
Guaranteeing the rotary motion being likely to occur when work, rotating disk 9 is connect with the bottom plate 2 of transversing gear by two force snesors, from
And obtain the frictional force generated when cutterhead movement.
Cutterhead of the invention can be adjusted according to the needs the center of distribution blade away from 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
Inaccuracy 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 detection accuracy.Steady load and guidance mode: guide post can guarantee sensor by normal pressure, avoid because carrying
Loading error caused by lotus direction change.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the 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 (6)
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 screw rod is provided on the bottom plate, and horizontal line screw rod one end is connected with
Servo motor is movably set with material disc on the horizontal line screw rod；It is provided with cutterhead above the material disc, the cutterhead passes through
Variable-frequency motor is installed in the rack；The pressure mechanism including force snesor, the bottom plate side are provided with below the bottom plate
Face connects rotating disk and bottom plate there are two force snesor along the installation of horizontal line screw rod direction；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 connection, the mobile station bottom are 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 at the top of the support column with the rotating disk；The support column both ends are arranged symmetrically, and there are two screw rods
Set, the screw rod cover one end and connect with the rack, and the other end is articulated with the support column bottom by U-shaped lock；Positioned at the U
Heavy-duty springs are arranged on the support column between shape lock and 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: be arranged on the bottom plate
There is rectangle rack, the horizontal line screw rod is arranged on the rectangle rack, and 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 screw rod
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821312580.8U CN208520712U (en) | 2018-08-15 | 2018-08-15 | A kind of frictional wear test device of shield cutter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821312580.8U CN208520712U (en) | 2018-08-15 | 2018-08-15 | A kind of frictional wear test device of shield cutter |
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| CN208520712U true CN208520712U (en) | 2019-02-19 |
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| CN201821312580.8U Active CN208520712U (en) | 2018-08-15 | 2018-08-15 | A kind of frictional wear test device of shield cutter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709822A (en) * | 2018-08-15 | 2018-10-26 | 长沙学院 | A kind of frictional wear test device and test method of shield cutter |
| CN113418813A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test device and cutter ring sample clamping tool thereof |
| CN113418814A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test method capable of simulating different slip rates |
-
2018
- 2018-08-15 CN CN201821312580.8U patent/CN208520712U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709822A (en) * | 2018-08-15 | 2018-10-26 | 长沙学院 | A kind of frictional wear test device and test method of shield cutter |
| CN113418813A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test device and cutter ring sample clamping tool thereof |
| CN113418814A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test method capable of simulating different slip rates |
| CN113418813B (en) * | 2021-06-22 | 2022-06-07 | 湘潭大学 | Cutter ring sample-rock opposite grinding test device and cutter ring sample clamping tool thereof |
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