A method of adjustment hobboing cutter rock machine synthesis experiment platform promotes mainly power cylinder installation site
Technical field
The invention belongs to heading equipment field, in particular to a kind of hobboing cutter rock machine synthesis experiment platform promotes mainly power cylinder installation
The method of adjustment of position.
Background technique
China has urgent demand as maximum tunnel and underground engineering construction market in the world, to Suporting structure,
But country's topography and geomorphology is complicated and changeable, the complicated multiplicity of Rock Species, each tunnel or underground engineering are required for landform
Looks, Rock Species design various hobboing cutter, therefore the hobboing cutter shape, structure physical property of hobboing cutter broken rock requires individually to evaluate, blind
Mesh selects hobboing cutter time-consuming and laborious, and the platform for lacking a kind of Comprehensive Experiment with general applicability removes to verify various hobboing cutters to difference
Rock breaking power equally lacks a kind of experimental facilities and is simulated to the rock breaking mechanism of various rocks and probed into for researcher.
It is both domestic and external that corresponding research has been carried out to broken rock feature and mechanism in relation to research institution.
Applicant's early period has carried out more in-depth study to TBM hob rock machine experiment porch, in CN102359919A
It is related to a kind of TBM broken rock experimental provision, the transmission case body and rock case that wherein hydraulic cylinder is connected with hydraulic stem drive both ends are simultaneously
It inwardly compresses or is outwardly away from, realize feed or the withdrawing of experimental rig, while the adjustment of hydraulic control transmission case and rock case
It controls the advance of hobboing cutter and exits, the installation site of cutter plate driver torque and cutter can not accurate correlation to solve in experiment
The technical issues of.A kind of experiment porch of tunnel piercing rounding machine cutter rock breaking mechanism mode research involved in CN102841030A, examination
Cutter can be tested and use tunnel piercing using electrohydraulic servo device and variable frequency electric motor as power source by testing platform
The pure driving cutterhead driving torque of general hobboing cutter simulation rock tunnel(ling) machine and propulsive force in machine practice of construction, carry out hard rock hob
Broken rock modal test, or cutter shearing modal test is carried out by being replaced with weak soil cutter, or carry out by being replaced with tearing cutter
Tearing cutter rock fracture in dynamic indentation modal test.By the tool apron and cutter and adjustment knife spacing on replacement rack, rock tunnel(ling) machine is realized
It is former that hard rock tunnels hobboing cutter rolling broken rock principle bench test, weak soil driving cutter shearing cutting principle and tearing cutter rock fracture in dynamic indentation
Bench test is managed, provides experimental rig for the broken rock fundamental research of rock tunnel(ling) machine, is conducive to establish suitable with geology
The knife disc tool design theory of answering property provides theoretical foundation for knife disc tool Design of digital;Its technology specifically solved is asked
Topic is to realize that various forms of cutters can be replaced in broken rock experimentation, forms different knife combinations and adjustable
Different knife spacing, to provide relatively accurate data for knife disc tool and country rock coupling rule.CN107941644A
It is related to a kind of experimental provision for measuring Three Degree Of Freedom hobboing cutter broken rock and abrasion, pedestal and correspondence including installing rock sample are installed on institute
The hobboing cutter above rock sample is stated, the hobboing cutter is installed on the girff of workbench, and moving knife case difference is provided on the workbench
Transverse moving mechanism, longitudinal moving mechanism and the vertically movable mechanism moved along 3 coordinate directions is also installed on the workbench
There is the Computerized digital control system for controlling the transverse moving mechanism, longitudinal moving mechanism and vertically movable mechanism;On the girff
It is also equipped with infrared temperature sensor, is also equipped with angular transducer on the hobboing cutter.The technical issues of it is solved is: 1. measurements
Data sheet one is acquired, weighting takes hobboing cutter by force parameter, usually ignores the survey of the opposite sliding of hobboing cutter temperature, hobboing cutter and rock
Amount;2. during abrasion research, mostly using dry state frictional experiment greatly, research is lacked to the broken rock under different medium, abrasion;3. adopting
Straight cuts can only be carried out with the hob abrasion testing stand of shrinkage scale cun, and need to frequently replace rock sample position, inefficiency.
On the basis of the studies above, applicant has carried out transformation to original hobboing cutter rock breaking mechanism synthesis experiment platform and has risen
Grade, it is intended to more comprehensively obtain in shield tunneling process more fully accurate broken rock experimental data.In transformation and upgrade
In the process, using 4 hobboing cutters, 4 featured oil cylinders are driven, but during the experiment, researcher's discovery is broken in hobboing cutter
In the experimentation of rock, the problem that featured oil cylinder cannot synchronize happens occasionally, and which results in each hobboing cutters in broken rock traveling process
In broken rock depth can not unify, thus can not accurately obtain the experimental data of broken rock depth.And broken rock cutting depth is rolling
A more important index parameter in the research of knife rock breaking mechanism, the parameter can not accurately obtain will lead to experiment can not be effective
Progress.
Summary of the invention
In order to solve the above technical problems, of the invention provides a kind of hobboing cutter rock machine synthesis experiment platform.
A kind of hobboing cutter rock machine synthesis experiment platform includes: mainframe, main transmission box, cutterhead assembly, sample case, main thrust oil
Cylinder, main transmission guiding device, featured power cylinder adjust device, and main transmission guiding device is arranged on the mainframe,
The main transmission guiding device is rail structure, and the cunning on railroad and mainframe is equally arranged on the main transmission box
Rail structure cooperates, and the mainframe and main transmission box are connected by featured power cylinder.
As a preferred solution of the present invention, hydraulic motor system, input terminal driving cog are set on the main transmission box
Axle aggregate, the input terminal transmission gear axle assembly include gear axle box, bearing holder (housing, cover), gear ring bearing-flange, gear shaft,
Bearing cutterhead connecting flange, the main transmission box are connected with cutterhead assembly, and it includes cutterhead, adjusting oil that the cutterhead assembly, which is 4,
Cylinder, steel ball, three-component force snesor, small girff, hobboing cutter gripping block, hobboing cutter, big girff, the cutterhead assembly underface setting examination
Sample case, the sample case include sample case support device, force snesor, pull rod, bottom plate, sample case guiding device.
As a preferred solution of the present invention, the featured power cylinder set-up mode is distributed in mainframe one for four
Week;
As a preferred solution of the present invention, the input terminal driving gearshaft assembly middle gear axle box and main transmission box case
Body is bolted, and gear shaft upper end is connected with hydraulic motor system, the hydraulic motor system include torque sensor,
Retarder, hydraulic motor, the hydraulic motor system are circumferentially arranged at 5 and uniformly distributed.
As a preferred solution of the present invention, the axial supporting way of gear ring is roller in the gear ring bearing-flange
Formula rotation support, the gear ring bearing-flange is connected with the upper end of bearing cutterhead connecting flange, under bearing cutterhead connecting flange
Big girff is installed in end connection cutterhead, the cutterhead lower end, and several steel balls, institute is arranged in the girff sliding rail side of big girff and cutterhead
It states setting between big girff and cutterhead and adjusts oil cylinder, the first displacement sensor and the second power sensing are set on the adjusting oil cylinder
Device, the big girff inside are arranged small girff, are connected between small girff and big girff by three-component force snesor, and described three points
Sensor of measuring one's own ability can measure stress of the small girff on three-dimensional, install hobboing cutter in the small girff, the hobboing cutter by
Hobboing cutter gripping block axial-radial is fixed on small girff.
As a preferred solution of the present invention, bottom plate is arranged in sample bottom portion, and sample is arranged in the bottom plate lower part
Several layers sample can be arranged in linear slide, the bottom plate top on sample case guiding device in case guiding device, the sample case
Frame, the sample frame are surrounded by the steel plate of both ends aperture, and pull rod passes through the steel plate on sample frame both sides and is fixed, the pull rod
Sample frame support device is arranged in upper setting force snesor, the sample case surrounding.
As a preferred solution of the present invention, the sample case point 5 layers of sample frame, sample frame support device be cylinder or
Hydraulic cylinder.
Researcher has found that improved rock machine experiment porch is driven with 4 featured oil cylinders during the experiment,
4 cutterheads and hobboing cutter work at the same time, due to each cutterhead and hobboing cutter in rock break-off process can there is a situation where discontinuity,
It often will lead to featured oil cylinder to be deviated with the position initially installed, thus can not accurately measure hobboing cutter in broken rock experiment
The data of broken rock depth.On this basis, it needs to finely tune the installation site of featured oil cylinder again to guarantee featured oil cylinder
Synchronism.
When readjusting the installation site of featured oil cylinder, usually firstly the need of the mutual alignment for obtaining 4 featured oil cylinders
With the accurate data of distance, nonsynchronous oil cylinder could be adjusted on this basis, or even need to carry out multiple oil cylinders
Adjustment followed by finely tunes the installation site of oil cylinder according to the position of acquisition and the data of distance using mechanical means.
In the experiment of original broken rock, the displacement sensor of oil cylinder is promoted mainly, stay-supported type displacement sensor is generallyd use, although
Stay-supported type displacement sensor can measure the displacement and moving distance of oil cylinder, pass it was discovered by researchers that being displaced according to stay-supported
The data of sensor are come when adjusting oil cylinder installation site, usually inaccurate, being analyzed reason has an aspect, in a first aspect, bracing wire passes
Sensor is fixedly mounted at the transmission case of featured oil cylinder vertical direction, when featured oil cylinder installation site changes, will affect
To the measurement of transmission case and then influence bracing wire displacement measurement sensor, the measurement of stay wire sensor also will appear deviation as a result, the
Two aspects, in prolonged rock break-off process, the bracing wire in stay wire sensor may be rushed due to what hobboing cutter rock cutting generated
Hitting power can be deformed, and then influence the measurement accuracy of stay wire displacement sensor.That is when 4 oil cylinder differences of discovery
When walking, and then being adjusted to the installation site of oil cylinder, stay-supported type displacement sensor cannot be accurately positioned out oil cylinder not
Synchronous accurate location occurred, is thus also just difficult to be adjusted correspondingly oil cylinder.
And the adjustment for promoting mainly oil cylinder installation site, the method generallyd use is the associated components for connecting featured oil cylinder
After the disassembly such as transmission case, bearing, reinstall, this mode is comparatively laborious, and wastes time.
Based on the above issues, as a preferred solution of the present invention, the featured power cylinder adjustment device includes grating
Displacement sensor, wedge block, thread, the grating displacement sensor include grating scale and grating reading head, the light
Grid ruler is mounted on the opposite mainframe in each featured power cylinder side, and the grating reading head is mounted on each featured power cylinder
Upper end and main transmission box junction, each grating reading head are maintained at same level, each grating during installation
The error of reading head level is no more than 0.01mm.Grating displacement sensor is using precision being capable of 0.1mm or contour in the prior art
Precision can be applicable in this experiment porch.It is main since the grating scale of grating displacement sensor is mounted on mainframe side
Rack side is smaller by the impact of hobboing cutter broken rock, and in featured power cylinder one end, fixed grating reading head reads grating scale and obtains
Displacement data, the mode of this non-mechanical ensure that when featured power cylinder is asynchronous, can accurately obtain each oil cylinder
Position and shift length.In the technological means of fine tuning oil cylinder installation site, what the featured power cylinder was connect with mainframe
Wedge block, the upper part for the pedestal that the sliding of the wedge block connect push action cylinder with mainframe are provided in pedestal
Flexible deformation is generated, the wedge block is connected with thread, and the thread extends to mainframe, and passes through horizontal spiral shell
Mother is affixed on mainframe outer wall.This adjustment mode, without will dismantle again with featured oil cylinder and its component being connected
It reinstalls, it is only necessary to which the adjustment of featured oil cylinder installation site can be realized by rotating horizontal nut.
The control of 4 oil cylinders of featured power cylinder is all made of GDS stabilizing hydraulic pressure, current stabilization, and grating scale is passed by wireless signal
Defeated device transmits a signal to featured power cylinder adjustment device, by having dsp chip, by chip to the letter of displacement sensor
Number, the pressure for adjusting each hydraulic cylinder makes each featured power cylinder move to identical height, and the dsp chip uses DSP2812
Chip handles data bits from 16 and is upgraded to 32.
The invention has the benefit that
(1) this test platform has the analog functuion of approximate construction site, and either main fltting speed, cutterhead rotation speed are still
Hobboing cutter type, hobboing cutter distance, the type of rock away from rotation center can be selected according to the actual situation, be suitble to most of
Construction environment;
(2) this test platform uses a large amount of sensing equipments to simulation process real-time monitoring, and then researcher is facilitated to study shield
Machine rock breaking mechanism promotes the research and development of New Kind of Hob;
(3) it is adjusted in device by featured power cylinder, behind the asynchronous oil cylinder exact position that grating displacement sensor determines, is passed through
Wedge block adjusts the installation site of featured power cylinder, to solve the multiple featured power cylinders of former experiment porch in rock break-off process
It is middle to generate nonsynchronous technical problem.
(4) data parameters of more accurate broken rock cutting depth are obtained while 4 hobboing cutter broken rocks.
Detailed description of the invention
Fig. 1 is a kind of hobboing cutter rock machine synthesis experiment platform structural schematic diagram (front view) of the invention;
Fig. 2 is a kind of hobboing cutter rock machine synthesis experiment platform structural schematic diagram (top view) of the invention;
Fig. 3 is a kind of hobboing cutter rock machine synthesis experiment platform cutterhead assembly structural schematic diagram of the invention;
Fig. 4 is a kind of hobboing cutter rock machine synthesis experiment platform main transmission box structural schematic diagram of the invention;
Fig. 5 is a kind of hobboing cutter rock machine synthesis experiment platform chamber structural schematic diagram of the invention;
Fig. 6 is a kind of hobboing cutter rock machine synthesis experiment platform main thrust cylinder structure schematic diagram of the invention;
In figure, 1, mainframe, 2, main transmission box, 21, input terminal driving gearshaft assembly, 211, gear axle box, 212, bearing
Set, 213, gear ring bearing-flange, 214, gear shaft, 215, bearing cutterhead connecting flange, 22, hydraulic motor system, 221, liquid
Pressure motor, 222, torque sensor, 223, retarder, 3, cutterhead assembly, 31, cutterhead, 32, adjusting oil cylinder, 33, steel ball, 34, three
Component force sensor, 35, small girff, 36, hobboing cutter gripping block, 37, hobboing cutter, 38, big girff, 4, sample case, 41, sample frame support
Device, 42, force snesor, 43, pull rod, 44, bottom plate, 45, sample frame guiding device, 46, sample frame, 5, featured power cylinder, 51,
Grating scale, 52, wedge block, 53, thread, 54, grating degree head, 6, main transmission guiding device.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
A kind of hobboing cutter rock machine synthesis experiment platform, structure include: mainframe 1, main transmission box 2, cutterhead assembly 3, sample
Case 4, featured power cylinder 5, main transmission guiding device 6, the mainframe 1 are used to support main transmission box 2 and sample case 4, institute
Setting main transmission guiding device 6 on mainframe 1 is stated, the main transmission guiding device 6 is rail structure, the main biography
The rail structure being equally arranged on railroad and mainframe 1 on dynamic case 2 cooperates, so that main transmission box 2 and mainframe 1 are perpendicular
Straight relative motion, the mainframe 1 are connect with main transmission box 2 by featured power cylinder 5, featured 5 set-up mode of power cylinder
Mainframe is distributed in 1 one weeks for four, and it is total that hydraulic motor system 22, input terminal driving gearshaft are set on the main transmission box 2
At 21, the input terminal transmission gear axle assembly 21 include gear axle box 211, bearing holder (housing, cover) 212, gear ring bearing-flange 213,
Gear shaft 214, bearing cutterhead connecting flange 215, the main transmission box 2 is connected with cutterhead assembly 3, and main transmission box 2 is by hydraulic horse
The power that rotates in a circumferential direction up to generation is transferred to cutterhead assembly 3, and cutterhead assembly 3 is made to have the ability that rotates in a circumferential direction, and the cutterhead assembly 3 wraps
It includes cutterhead 31, adjust oil cylinder 32, steel ball 33, three-component force snesor 34, small girff 35, hobboing cutter gripping block 36, hobboing cutter 37, machete
Case 38, sample case 4 is arranged immediately below the cutterhead assembly 3, and the sample case 4 includes sample case support device 41, force snesor
42, pull rod 43, bottom plate 44, sample case guiding device 45.
The 21 middle gear axle box 211 of input terminal driving gearshaft assembly is bolted with 2 cabinet of main transmission box,
To facilitate fixed gear shaft 214,214 upper end of gear shaft is realized by gear axle box 211 to gear by 212 lower end of bearing holder (housing, cover)
The axial restraint of axis 214,214 upper end of gear shaft are connected with hydraulic motor system 22, and hydraulic motor 223 is passed torque
It is delivered on gear shaft 214, the hydraulic motor system 22 includes torque sensor 221, retarder 222, hydraulic motor 223, institute
State torque sensor 221 can circumferential load suffered by real-time monitoring this experiment porch cutterhead assembly 3, and then facilitate research people
Member adjusts main advance distance in real time, at the circumferential setting 5 of the hydraulic motor system 22 and uniformly distributed, using hydraulic motor
It can stablize, not vibrated environment influences, and load capability is easy extension.
Preferably, the gear shaft 214 delivers torque to gear ring bearing-flange 213, the gear ring bearing-flange 213
The axial supporting way of middle gear ring is roller rotation support, the gear ring bearing-flange 213 and bearing cutterhead connecting flange
215 upper end is connected, and 215 lower end of bearing cutterhead connecting flange connects cutterhead 31, passes to complete torque from main drive 2
It is delivered to cutterhead assembly 3, big girff 38 is installed in 31 lower end of cutterhead, and big girff 38 is radially movable on cutterhead 31, in machete
Several steel balls 33 are arranged to reduce frictional force of the girff in sliding process in the girff sliding rail side of case 38 and cutterhead 31, described big
Setting adjusts oil cylinder 32 between girff 38 and cutterhead 31, so that big girff 38 is moved radially according to the control of researcher, it is described
Adjust first displacement sensor is set on oil cylinder 32 and the second force snesor facilitate researcher's real-time monitoring girff stress and
Situation, and then make suitable adjustment prevents girff from radially overloading, and damages this experiment porch, inside the big girff 38
Small girff 35 is set, is connected between small girff 35 and big girff 38 by three-component force snesor 34, the three-component power sensing
Device 34 can measure stress of the small girff 32 on three-dimensional, and then prison in real time can be achieved in the stress condition of small girff 32
It surveys, hobboing cutter 37 is installed in the small girff 35, the hobboing cutter 37 is fixed on small girff 35 by 36 axial-radial of hobboing cutter gripping block.
Preferably, 4 bottom of the sample case setting bottom plate 44 is with the rock material of support test, 44 lower part of the bottom plate setting
Sample case guiding device 45, the sample case 4 can on sample case guiding device 45 linear slide so that facilitate filling rock material and
Sample case 4 is observed, several layers sample frame 46 is arranged in 44 top of bottom plate, and the sample frame 46 is enclosed by the steel plate of both ends aperture
At pull rod 43 passes through the steel plate on 46 both sides of sample frame and is fixed, and force snesor 42 is arranged on the pull rod 43 and then analyzes
The lateral extruding force that rock stratum each section is subject to, and then transverse shear stress power pole suffered by rock stratum is analyzed by monitoring extruding force
Limit, and can be with the pressure limit different according to different rock formation analysis.Sample frame support device is arranged in 4 surrounding of sample case
41, while playing support 46 overall structure of sample frame, prevent the unexpected cataclastic failure sample frame 46 of rock material.
Preferably, the sample case 4 divides 5 layers of sample frame 46, and sample frame support device 41 is cylinder or hydraulic cylinder.
Preferably, the featured power cylinder adjustment device includes grating displacement sensor, wedge block 52, thread
53, the grating displacement sensor includes grating scale 51 and grating reading head 54, and the grating scale 51 is mounted on each main thrust
On the opposite mainframe 1 in 5 side of oil cylinder, the grating reading head 54 is mounted on each 5 upper end of featured power cylinder and main transmission box
Junction, each grating reading head 54 are maintained at same level during installation, each grating reading head level
Error is no more than 0.01mm.Grating displacement sensor 0.1mm or can wait high-precision be ok using precision in the prior art
It is applicable in this experiment porch.Since the grating scale 51 of grating displacement sensor is mounted on mainframe side, the side of mainframe 1
Impact by hobboing cutter broken rock is smaller, and in featured 5 one end of power cylinder, fixed grating reading head 54 reads grating scale 51 and obtains position
Data are moved, the mode of this non-mechanical ensure that when featured power cylinder 5 is asynchronous, can accurately obtain each oil cylinder
Position and shift length.In the technological means of fine tuning oil cylinder installation site, what the featured power cylinder 5 was connect with mainframe 1
Be provided with wedge block 52 in pedestal, the pedestal that the sliding of the wedge block 52 connect push action cylinder with mainframe it is upper
Part generates flexible deformation, and the wedge block 52 is connected with thread 53, and the thread 53 extends to mainframe, and
It is affixed on 1 outer wall of mainframe by horizontal nut.This adjustment mode, without by with featured oil cylinder and its be connected
Component is dismantled and is reinstalled again, it is only necessary to which the adjustment of featured oil cylinder installation site can be realized by rotating horizontal nut.
The grating displacement sensor promotes mainly power cylinder 5 for measuring featured power cylinder 5 elongation or compression distance in real time
The control of 4 oil cylinders is all made of GDS stabilizing hydraulic pressure, current stabilization, and grating scale 51 transmits a signal to master by wireless signal transmitter
Push action cylinder adjusts device, using the signal of the processor processing displacement sensor of dsp chip, adjusts the pressure of each hydraulic cylinder
Each featured power cylinder 5 is set to move to identical height, the dsp chip uses DSP2812 chip, handles data bits from 16
32 are upgraded to, the transmission speed of signal is substantially increased, the control by dsp chip to featured power cylinder 5, synchronous error control
System is within 0.1mm.
The working mechanism of the application hobboing cutter rock machine synthesis experiment platform is as follows: will fill up rock material in sample case 4, and by sample
Case 4 is put into mainframe 1 immediately below hobboing cutter, and starting sample frame support device 41 compresses sample frame 46;Start hydraulic motor
System 22 makes cutterhead 31 start to rotate, and is adjusted according to requirement of experiment and adjusts 32 position of oil cylinder and hydraulic motor rotary speed;Starting is featured
Power cylinder 5 adjusts featured 5 feed speed of power cylinder and feeding depth according to requirement of experiment.
Detected when by grating displacement sensor, promote mainly power cylinder 5 it is asynchronous with other oil cylinders in stroke when, to reality
After testing, the data for reading grating displacement sensor are shut down, determine nonsynchronous oil cylinder, then adjustment rotates asynchronous oil cylinder
Horizontal nut, by the adjustment of horizontal nut tightness adjusting, and then the sliding of wedge block 52 is controlled, thus to the installation of the oil cylinder
Position is finely adjusted, and after adjustment, is restarted the propulsion of featured oil cylinder, is continued to test, thereby ensure that multiple rollings
The uniformity of knife broken rock cutting depth.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Pipe is described the invention in detail referring to above-described embodiment, it should be understood by those ordinary skilled in the art that: still may be used
With modifications or equivalent substitutions are made to specific embodiments of the invention, and repaired without departing from any of spirit and scope of the invention
Change or equivalent replacement, should all cover in present claims range.