CN104776948B - Roller moment of torsion detecting system - Google Patents
Roller moment of torsion detecting system Download PDFInfo
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- CN104776948B CN104776948B CN201510213443.3A CN201510213443A CN104776948B CN 104776948 B CN104776948 B CN 104776948B CN 201510213443 A CN201510213443 A CN 201510213443A CN 104776948 B CN104776948 B CN 104776948B
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Abstract
A kind of roller moment of torsion detecting system, fundamentally solves the problems such as existing drum shearer mechanical characteristic detection error is big, detection parameters quantity is few, testing result can not be applied to actual production, it includes cutting motor, motor output shaft gear, motor signal detection means, is characterized in that：The parts such as the roller moment of torsion detecting system also includes the driving wheel I that is sequentially engaged with motor output shaft gear and driving wheel II, is coaxially disposed with driving wheel II driving wheel III, the idle pulley I~III sequentially engaged with driving wheel III, the drum gear that the planetary gear engaged with idle pulley III and planetary gear are coaxially disposed, the roller that is driven by drum gear；Wherein, idle pulley III rotating shaft is bearing pin sensor, and bearing pin sensor is externally provided with bearing, and bearing is spacing in cover plate, and one end of bearing pin sensor is spacing on the cover board by bearing pin positioning screw.
Description
Technical field
The present invention relates to coal mine machinery field, specifically a kind of roller moment of torsion detecting system.
Background technology
To ensure being smoothed out for roller coal mining activity, often need to supervise the stressing conditions of each part of coal-winning machine in real time
Survey and record, and be used to instruct the manufacturing of coal mining machine after interpretation of result will be recorded, phase of the needs in coal-winning machine for this
Answer position that corresponding monitoring device is installed.Existing shearer parameters detecting system is mainly used in cut tooth, roller, is oriented to and slides
The detection of the main portions such as boots, smooth boots, drag conveyor.
The test of roller moment of torsion, existing torsion-testing method are broadly divided into contact and contactless two kinds.Contact
Torque sensor be on measured axis adhering resistance strain sheets or tested between centers install shaft coupling, by straining sheet resistance values
Measure of the change moment of torsion；Non-contact torque sensor one kind is to be measured based on optical means using moment of torsion and torsion angular dependence, one
Class is to produce magnetic effect measurement using torsional stress based on magnetic theory.The common ground of above torsion-testing sensor is needed to dynamic
Corresponding tool is reequiped or installed on axle to power output shaft.But combined harvester threshing cylinder is closed device, and axle
On have sheller unit, above-mentioned sensor can not be installed.
Coal mining machine roller mainly completes coal cutting and task of coalingging, and existing method is by detecting in motor operation course
Electrical parameter, so that it is determined that the operation torque of roller.Because electrical parameter fluctuates during coal mining small, motor can not be used at all
Electrical parameter is calculated, therefore very big using the measuring result error obtained by this method, is not used to instruct actual production.
The coal petrography of different hardness is commonly encountered in operation process, when running into the higher coal of hardness, rock, the moment of torsion of transmission system can dash forward
So increase, moment of torsion and rotating speed are such as adjusted not in time, easily parts is damaged, it is tight under machine driven system operating mode to avoid
Overload again, often select safety coefficient（Peak torque/nominal torque）Higher motor, manufacturing cost certainly will be improved.
Fully-mechanized mining working down-hole coal excavation operation process would generally be related to rib and be caving scope, coal-winning machine and rib impact
The measurement of power, stress wave propagation scope and spread speed, but because subsurface environment is complicated, may not be before exploitation in rib
Middle install sensor, even if the problem of not considering fund, construction safety, difficulty of construction, sensor, gesture are set up in original rib
Original rib inner structure must be influenceed, accurate measurement result can not be obtained at all, is existed therefore, establishing one with actual rib
Spatially meet 1:1 ratio, physical function parameter are identical with actual coal petrography, internal by the multigroup three axis force sensing of matrix arrangement
The simulation rib of device, and establish corresponding data sampling and processing platform, with realize to rib impulsive force, the transmission of rib planted agent's ripple,
Rib planted agent velocity of wave propagation, rib planted agent's ripple spread scope etc. are detected, and testing result can be that coal winning technology parameter determines
Formulation with associated safety control measures provides guidance.
The content of the invention
It is an object of the invention to provide a kind of roller moment of torsion detecting system, and drum-type can not be detected by, which fundamentally solving, adopts
Under coal machine operating mode the problem of mechanics performance data, its have it is simple in construction, easy to use, be easily manipulated, Data Detection is directly perceived, inspection
The advantages that surveying reliable results.
The object of the present invention is achieved like this：The roller moment of torsion detecting system includes cutting motor, motor output shaft tooth
Wheel, motor signal detection means, are characterized in that：The roller moment of torsion detecting system also includes suitable with motor output shaft gear
The driving wheel I and driving wheel II of secondary engagement, the driving wheel III that is coaxially disposed with driving wheel II, sequentially engaged with driving wheel III
Idle pulley I ~ III, the planetary gear engaged with idle pulley III, the drum gear being coaxially disposed with planetary gear, the rolling driven by drum gear
The parts such as cylinder；Wherein, idle pulley III rotating shaft is bearing pin sensor, and bearing pin sensor is externally provided with bearing, and bearing is spacing in cover plate
Interior, one end of bearing pin sensor is spacing on the cover board by bearing pin positioning screw.
The simulation rib data acquisition platform includes the pressing plate at the top of simulation rib, the hydraulic pressure for driving pressing plate
Cylinder, the three-dimensional planted agent's force snesor simulated in rib is distributed in matrix form, simulation rib is according to underground coal mine coal petrography hardness
The coal petrography mixture poured.
The test system of the present invention by the linkage of coal-winning machine each several part sensing unit, respectively survey by accurate measurement outfit
Try the true mechanical characteristic data of equipment.The test system may not only be applied to the real-time monitoring of coal-winning machine relevant parameter under operating mode,
And simulation rib data acquisition platform is coordinated to simulate the complicated operating environment in underground on well.Rolled for manufacturer in research and development
During cylinder coal-winning machine fully mechanized mining outfit, there is provided hair data reference and theoretical direction.
Brief description of the drawings
Fig. 1 is the system architecture diagram of the present invention；
Fig. 2 is the surface structure schematic diagram of roller of the present invention；
Fig. 3 is the configuration schematic diagram of cut component of the present invention；
Fig. 4 is the Principle of Signal Transmission schematic diagram of cutterhead of the present invention；
Fig. 5 is the structural representation of cutterhead part signal transmission circuit of the present invention；
Fig. 6 is the cross section structure diagram of the flat slippery boots assembly of the present invention；
Fig. 7 is the main structure diagram of the flat slippery boots assembly of the present invention；
Fig. 8 is the Impact direction schematic diagram of the smooth boots bearing pin of the present invention；
Fig. 9 is the main structure diagram of the smooth boots bearing pin of the present invention；
Figure 10 is the cross section structure diagram of guide skid shoe component of the present invention；
Figure 11 is the main structure diagram of guide skid shoe component of the present invention；
Figure 12 is the Impact direction schematic diagram of guide slip shoe bearing pin of the present invention；
Figure 13 is the main structure diagram of guide slip shoe bearing pin of the present invention；
Figure 14 is the fulcrum and force position schematic diagram when guide slip shoe bearing pin X-direction of the present invention is demarcated；
Figure 15 is force position schematic diagram when guide slip shoe bearing pin of the present invention is surveyed；
Figure 16 is the structural representation of cut transmission system of the present invention；
Figure 17 is the stress exemplary plot of idle pulley axle sensor of the present invention；
Figure 18 is the cross section structure diagram of scraper component of the present invention；
Figure 19 is the assembling structure schematic diagram that the present invention rocks vibration detection device；
Figure 20 is the sensor distributing position schematic diagram in simulation rib；
Figure 21 is the main structure diagram of simulation rib.
Description of reference numerals：1 roller, 2 pick units, 3 helical blades, 4 hard alloy heads, 5 snap rings, 6 tooth sets, 7 toothholders,
8 strain rosettes, 9 foil gauges, 10 metallic channels, 11 mounting blocks pin-and-holes, 12 steady pins, 13 fixture block pin-and-holes, 14 wire guides, 15 fixture blocks, 16
Mounting blocks, 17 transmitter modules, 18 receiving modules, 19 display screens, 20 power modules, 21A/D converters, 22 data storages, 23
Supporting leg, 24 axle sleeves, 25 smooth boots bearing pins, 26 pressing plates, 27 smooth boots, 28 annular grooves, 29 foil gauge groups, 30 mounting seats, 31 are driven
Moving gear, 32 bearings, 33 guide plates, 34 pin rows, 35 end plates, 36 dynamometry bolts, 37 guide slip shoe bearing pins, 38 foil gauge group I, 39
Foil gauge group II, 40 foil gauge group III, 41 foil gauge group IV, 42 cutting motors, 43 motor output shaft gears, 44 driving wheel I,
45 driving wheel II, 46 driving wheel III, 47 idle pulley I, 48 idle pulley II, 49 idle pulley III, 50 drum gears, 51 planetary gears, 52 bearings,
53 bearing pin sensors, 54 idler shaft positioning screws, 55 cover plates, 56 bolts, 57 nuts, 58 chain annular grooves, 59 tension detecting apparatus, 60
Vibration detection device, 63 detection baffle plates, 64 3-axis acceleration sensors, 65 charging holes, 66 data are rocked in scraper plate, 61 crossbeams, 62
Transmit mouth, 67 sealing-plugs, 68 dead slots, 69 acceleration acquisition modules, 70 three-dimensional planted agent force snesors, 71 simulation ribs, 72 pressing plates,
73 hydraulic cylinders, 74 right pressing plates, 75 right hydraulic cylinders, 76 left pressing plates, 77 left hydraulic cylinders, 78 left bottom plates, 79 left slides, 80 left supports
Plate, 81 right bottom plates, 82 right slides, 83 right support plates, 84 it is right draw move oil cylinders, 85 upper backup pads, 86 Zolas move oil cylinder, at 87 data
Reason and display unit.
Embodiment
Below in conjunction with Fig. 1 ~ 21, present disclosure is described in detail by specific embodiment.The roller moment of torsion detecting system
Including the coal mining machine data acquisition platform, simulation rib data acquisition platform, hydraulic support being connected respectively with data collection station
Data acquisition platform, drag conveyor data acquisition platform.Wherein, coal mining machine data acquisition platform detects including cut tooth stress
System, drum rotation speed detecting system, coal-winning machine vibration detecting system, smooth boots are detected by force detection system, guide slip shoe stress
System, coal-winning machine position detecting system, coal-winning machine hydraulic pressure draw-bar are by force detection system, roller moment of torsion detecting system.
Simulating rib data acquisition platform includes rib impact force detection system, rib planted agent ripple transmission detecting system, coal
Wall planted agent's velocity of wave propagation detecting system, rib planted agent's ripple spread scope detecting system.
Hydraulic support data acquisition platform includes bearing pin/ear mount stress mornitoring system, hydraulic support roof toad detection system
System, pushing and sliding are tried to stop people from fighting each other displacement detection system, Hydraulic Support Posture monitoring system, hydraulic support position detecting system.Drag conveyor
Data acquisition platform includes chain by force detection system, flight chain speed detection system, drag conveyor voltage/current/work(
Rate detecting system, drag conveyor vibration detecting system, the middle pan of scraper conveyor are by force detection system, drag conveyor dumbbell
By force detection system, drag conveyor position detecting system.
First, cut tooth is by force detection system
The system includes cut component, A/D converter, data storage, transmitter module 17, receiving module 18, display screen
19 grade parts.Wherein, cut component includes helix drum 1 and the pick unit 2 being circumferentially fixed on roller 1, pick list
Member includes part, the pick units such as hard alloy head 4, snap ring 5, tooth set 6, toothholder 7, fixture block 14 and is fixed on roller 1 by fixture block
Helical blade 3 on.In hard alloy head end insertion toothholder, and covered and fixed by the outside tooth for being socketed snap ring.Toothholder bottom
Provided with disc structure, disk bottom car goes out the cylindrical structure that diameter is less than disk, is milled out in the middle part of cylindrical structure and is inscribed in cylinder circle
Octagon rod structure in tee section, processing leading on each side center line of octagon post on the outer wall of cylindrical structure bottom
Wire casing 10, installation foil gauge 9 and strain rosette 8 are respectively separated in the same position of octagon post.Fixture block 15 is with inner chamber
（Angle is not shown in figure）Semi-closed structure, process a pair of block pin-and-holes 13 and wire guide 14 communicated with inner chamber on fixture block 15,
Cylindrical structure bottom processes mounting blocks 16, and mounting blocks 16 are provided with a pair of mounting blocks pin-and-holes 11 being engaged with fixture block pin-and-hole 13,
The mounting blocks 16 of toothholder bottom are inserted in the inner chamber of fixture block 15, and spacing by steady pin, and the other end is incited somebody to action by the way that disc structure is spacing
Fixture block bore seal.Foil gauge 9 and the wire of strain rosette 8 connect up downwards along metallic channel 10, by the wire guide of fixture block 14 after collecting
16 extractions are connected with the A/D converter in roller.
The both positive and negative polarity of power module 20 by wire respectively with A/D converter 21, data storage 22, transmitter module 17
Both positive and negative polarity is connected, for A/D converter 21 is powered, data storage 22 is powered, transmitter module power supply.The positive pole of power module 20 leads to
Cross wire and foil gauge 9 or strain rosette 8（Not shown in figure, the same foil gauge of its annexation）Positive pole be connected, foil gauge 23 or
The negative pole of strain rosette is connected by wire with the signal input part negative pole of A/D converter 21, the signal input part of A/D converter 21
Positive pole is connected with the negative pole of power module 20, and this loop constitutes the analog acquisition loop of three axis force detection.A/D converter 21
Signal output part positive pole be connected by wire with the signal input part positive pole of data storage 22, the signal of A/D converter 21
Negative pole of output end is connected by wire with the signal input part negative pole of data storage 22, and this loop is obtained by A/D converter 21
To three axis force measured value real-time storage into data storage 22, the signal output part positive pole of data storage 22 passes through wire
It is connected with the signal input part positive pole of transmitter module, the signal output part negative pole of data storage 22 passes through wire and transmitter module
Signal input part negative pole be connected, this loop is by the three axis force measured value real-time Transmission in data storage 22 in the computer room
Signal receiving module, realize and long-range receive data.
Because foil gauge and strain rosette are sealed in fixture block, shadow is caused to measurement accuracy without having to worry about severe work condition environment
Ring, improve measuring accuracy, while prevent the damage of dynamometry original paper, maintenance cost is preferably minimized.Installed in roller
Data processing is processed with transmitter module to obtained information.In order to correctly measure the mechanical characteristic of pick, toothholder
The face of cylinder of connecting portion and gap is left with the fixture block of roller, do not contacted with fixture block；Connecting portion tail end processing squarely and with
Fixture block coordinates, and rear-end square column side is machined with through hole, can play connection function.This device is directly encapsulated into roller
Inside fixture block, it can prevent underground rugged environment from being destroyed to caused by device.The structure of pick cutting tip, nothing need not be changed
The connected mode between pick and toothholder need to be changed.It is identical with the mounting means of common pick, also it is the production of raising coal-winning machine
Efficiency and the safety of guarantee coal mining activity provide sound assurance.
During work, roller is arranged on coal-winning machine with main axis with digger, and stress produces during pick cutting coal petrography
Strain, drives pick box cylindrical structure to produce strain, and the foil gauge and strain rosette for being fixed on octagon column construction produce therewith
Resistance changes after raw strain, foil gauge and strain rosette deformation, produces corresponding electric signal, and signal is through A/D converter by mould
Analog quantity is converted to corresponding three axis force digital quantity storage into data storage, and the information being stored in data storage passes through transmitting
Module sends the receiving module to computer room, reflects in real time after computer data processing on a display screen, can be cut not changing
The mechanical characteristic under pick actual condition is measured in the case of tooth actual operating conditions, and can all record or transfer back in real time
On computer, pick three received strength situation during coal petrography cutting is accurately measured in real time under coal-winning machine working condition, survey
Amount method is easy, reliable results, strong adaptability, and convenient using the measurement apparatus installation operation of the measuring method, real result can
Lean on, measurement cost is low.
2nd, smooth boots are by force detection system
The system includes supporting leg 23, axle sleeve 24, smooth boots 27, pressing plate 26, full-bridge circuit, data processing conversion equipment,
Smooth boots 27 are hinged on supporting leg 23 by bearing pin 4, and by pressing plate 26 that smooth boots bearing pin 25 is spacing, bearing pin and smooth boots
Between be provided with axle sleeve 24, bearing pin 4 is tubular structure, and bearing pin outer wall is provided with two annular grooves 28, each strain of installation one in groove
Piece group 29, a part for foil gauge group are arranged on the horizontal direction in bearing pin section, and an order part for foil gauge group is arranged on bearing pin
The vertical direction in section, just it coincide, prevents between supporting leg inwall and bearing pin outer wall, between smooth boots inwall and bearing pin outer wall
Smooth boots bearing pin 25 is moved or rotated in axis hole.Data processing conversion equipment includes the PLC device with data processing and conversion
And display screen.
The method of testing of the smooth boots mechanical characteristic of the coal-winning machine comprises the following steps：
1）Using full-bridge connected mode, in the case of zero load, the initial strain size of each foil gauge is recorded；
2）The Y-direction to the smooth boots of coal-winning machine and Z-direction apply 10000N, 20000N, 30000N, 40000N fixed load respectively
Lotus, and record corresponding variate（That is actual strain value subtracts initial strain value）；
3）Loaded value and the relational expression of strain value are calculated with mathematical analysis software, relational expression is finally input to PLC
In；
4）The bearing pin demarcated is installed on smooth boots, under operating mode, foil gauge passes through full-bridge circuit, will strain big brief biography
It is defeated to be processed into smooth boots Y-direction and Z-direction stress size, and the real-time display on screen through PLC Programs into PLC, Fy directions by
Force signal is Sy, and Fz directions are Sz by force signal.
3rd, guide slip shoe is by force detection system
The system includes mounting seat 30, guide plate 33, drive gear 31, the pin row engaged with drive gear, mounting seat 30
Be hinged by guide slip shoe bearing pin 37 with guide plate 33, guide slip shoe bearing pin 37 is Pyatyi ladder tubular structure（Diameter of axle smallest end
For one-level）, bearing pin is spacing in mounting seat by the first order and level V, spacing in guide plate by the second level and the fourth stage
On, drive gear 31 is spacing on the third level by the bearing 32 at both ends, and the junction of ladder tubulars at different levels corresponds to installation respectively
Having and be located at bearing pin both ends foil gauge group I ~ IV39 ~ 41, a foil gauge group I ~ IV part is arranged on the horizontal direction in bearing pin section,
Foil gauge group makes a part is spacing in the vertical direction in bearing pin section, guide slip shoe bearing pin 37 to have dynamometry bolt 36,
The one end of dynamometry bolt 36 is threadedly attached in guide slip shoe bearing pin 37, and the other end passes through the end plate that is fixed in mounting seat 30
35 sealing, between the inwall of guide slip shoe bearing pin 37 and the outer wall of dynamometry bolt 36, between mounting seat inwall and guide plate outer wall,
Just it is coincide between guide plate inwall and drive gear outer wall, prevents guide slip shoe bearing pin 37 from being moved in the axis hole of mounting seat 30
Or rotate.During coal work, interaction is produced between the pin row 34 on guide slip shoe and scrapper conveyor, it is at this moment each on guide slip shoe
Power suffered by part is acted on dynamometry bearing pin, so that bearing pin is deformed, dynamometry bearing pin causes while deformation respectively should
Become piece and the deformation of dynamometry bolt.The method of testing of the guide sliding shoe of coal-winning machine mechanical characteristic comprises the following steps：
1）The X-direction of dynamometry bearing pin is demarcated：It is fulcrum 1 in the middle part of one-level, is fulcrum 2 in the middle part of two level, is branch in the middle part of level Four
Point 3, Pyatyi middle part is fulcrum 4；F1 is relative with the position of fulcrum 2, and F2 and F3 are located at the both ends of the bearing pin third level, F4 and 3, fulcrum
Put relative.
a）Fixed pivot 1, applies 0,10,20,30,40 ton forces to F1 respectively, and record corresponds to foil gauge group 1 under different F1
Strain value T1；
b）Fixed pivot 2, applies 0,10,20,30,40 ton forces to F2 respectively, and record corresponds to foil gauge group 2 under different F2
Strain value T2；
c）Fixed pivot 3, applies 0,10,20,30,40 ton forces to F3 respectively, and record corresponds to foil gauge group 3 under different F3
Strain value T3；
d）Fixed pivot 4, applies 0,10,20,30,40 ton forces to F4 respectively, and record corresponds to foil gauge group 4 under different F4
Strain value T4；
e）Then the data of demarcation are analyzed and are fitted, obtained each foil gauge group unit strain value and exerted a force with outside
Between relation：FC1=31.8016×T1-0.0115；FC2=34.6444×T2-0.5656；FC3=35.0556×T3-
0.4283；FC4=25.2937×T4-0.1059.
2) Y-direction of bearing pin is demarcated using X-direction identical method：Record foil gauge group 1 ~ 4 under different F1 ~ F4 should
Variate M1 ~ M4, obtain FM1=31.3193 × M1+0.0665；FM2=35.1973×M2-0.6587；
FM3=36.6102×M3-0.4863；FM4=31.8852×M4-0.0718.
3) interaction force between mounting seat left plate and dynamometry bearing pin is RX1, RY1；Mounting seat right plate and dynamometry pin
The interaction force of between centers is RX2, RY2；Interaction force on the left of guide plate between dynamometry bearing pin is FX1, FY1；Driving wheel
Interaction force between left side and dynamometry bearing pin is FX2, FY2；Driving wheel left side is the interaction force between dynamometry bearing pin
FX3、FY3；It is FX4, FY4 the interaction force between dynamometry bearing pin on the right side of guide plate, then：RX1=[FC2×b+FC1×(a+
b)]/b；RX2=[FC3×d+FC4×(d+e)]/d；
RY1=[FM2×b+FM1×(a+b)]/b；RY2=[FM3×d+FM4×(d+e)]/d；
FX1=FC1；FX2=[RX1×(b+c)+FY4×(d+e)-FX1×(a+b+c)–RX2×d]/(b+c)；
FX3=RX1+RX2-FX1-FX2-FX4；FX4=FC4；
FY1=FM1；FY2=[RY1×(b+c)+FM4×(d+e)-FY1×(a+b+c)–RY2×d]/(b+c)；
FY3=RY1+RY2-FY1-FY2-FY4；FY4=FM4.A, b, c, d, e in formula represent the distance between each power, such as scheme
Shown in 14.
, can be by installed in dynamometry guide slip shoe along the axial force of dynamometry guide slip shoe bearing pin 37 in the guide slip shoe course of work
Dynamometry bolt in bearing pin 37 is measured.Can accurate and effective measurement the coal-winning machine course of work in guide slip shoe mechanical characteristic, be
The structure optimization of guide slip shoe provides foundation, has practical significance to the reliability and service life for improving coal-winning machine.
4th, roller moment of torsion detecting system
The system includes cutting motor 42, motor output shaft gear 43, the master sequentially engaged with motor output shaft gear 43
Driving wheel I44 and driving wheel II45, the driving wheel III46 being coaxially disposed with driving wheel II45, sequentially engage with driving wheel III46
Idle pulley I ~ III47 ~ 49, the planetary gear 51 engaged with idle pulley III49, the drum gear 50 being coaxially disposed with planetary gear 51, by rolling
The parts such as the roller that cylinder gear 50 drives.Wherein, idle pulley III49（It is adjacent with the planetary gear 51 of roller）Rotating shaft be bearing pin sensing
Device 53, bearing pin sensor 53 are externally provided with bearing 52, and bearing 52 is spacing in cover plate 55, and one end of bearing pin sensor 53 passes through bearing pin
Positioning screw 54 is spacing on cover plate 55.
Bearing pin sensor can be obtained by shearing action, analysis,（1）Ft=Ft1+Ft2；（2）Fr=Fr1-Fr2；（3）Ft1=T/d.
Ft makes a concerted effort to be circumferential, and Fr is resultant radial force, and Ft1 and Ft2 are the force of periphery suffered by idle pulley III, and Fr1 and Fr2 are footpath suffered by idle pulley III
Xiang Li, T are moment of torsion suffered by idle pulley III, and d is idle pulley III diameter.
By bearing pin sensor is collected the stress data Ft (Y-direction) of both direction, Fr (X-direction), wherein Ft1 and
Ft2 is the force of periphery suffered by idle pulley III, and wherein Ft1 acts on the power to idle pulley III49 for idle pulley II48, and Ft2 makees for planetary gear 51 is counter
With the power to idle pulley III49, two power directions equal in magnitude of Ft1 and Ft2 are identical in coal-winning machine cutting course, by formula（1）
To peripheral force Ft1=Ft2=Ft/2, by formula（2）Resultant radial force Fr is obtained because such as Figure 17, Fr1 to the right, Fr2 to the left, Fr1 and
Fr2 acts on axle center simultaneously, in the opposite direction, and equal in magnitude, i.e. Fr1=Fr2, so Fr=0, by formula（3）Obtain actual torsion
Square T, i.e. Ft=2T/d, i.e. torque T=Ftd/2.
Nearly roller side idle pulley III bearing pin sensor is close with idler shaft profile, and meets the mechanical requirements such as intensity.Pin
Axle sensor has radial direction force measuring function, according to measurement of the bearing pin sensor to radial load, realizes that idle pulley is turned round with reference to idle pulley rotating speed
The measurement of square, the moment of torsion of roller is being calculated by speed reducing ratio.So as to avoid conventional method by detecting current of electric ripple
Error in dynamic measure torque method, effectively eliminates the interference of extraneous factor, monitors the transient state output under roller operating mode in real time
Moment of torsion and rotating speed, once moment of torsion occur occurs abnormal conditions, working condition is just adjusted rapidly, avoid damaging transmission system, for
Improve drum shearer operating reliability and protection main transmission is significant.
5th, drag conveyor vibration detecting system
The system includes scraper plate 60, is fixed on the detection baffle plate 63 of scraper plate bottom, is fixed in scraper plate and rocks vibration inspection
The crossbeam 61 surveyed device 62, be fixed on by bolt 56 and nut 57 on scraper plate 60, scraper plate is interior to be provided with some chain annular grooves 58, chain link
Tension detecting apparatus 59 is provided with groove（Chain link with foil gauge）, the bottom at scraper plate both ends is respectively equipped with groove.Rock vibration
Detection means 62 includes housing, the detection baffle plate 63 that is fixed on housing, and detecting spacing in baffle plate has 3-axis acceleration sensor
64, it is spacing in housing to have the acceleration acquisition module 69 being connected with the output end of 3-axis acceleration sensor 64, detect and set on baffle plate
There is the dead slot 68 corresponding with the data transmission mouth 66 of acceleration acquisition module 69, charging hole 65, so as to detection means charging sum
Downloaded according to transmission, dead slot 68 is provided with the be hinged sealing-plug 67 with detection bottom plate.When in test process or when not in use, use is close
Blocking 67 is clogged, and when needing data being transmitted, sealing-plug 67 is opened, carried out data transmission.Consolidated by bolt
Regular inspection survey baffle plate 63 is fixed on the both ends of the side of scraper plate 60 by vibration detection device 62 is rocked.Outside radio acceleration acquisition module 69
Portion leaves a data transmission mouth 66, when in test process or when not in use, being clogged with water proof and dust proof plug 44, when needing to transmit
Data, sealing-plug 67 is opened, carried out data transmission.Scraper plate 60, crossbeam 61 and chain link（Tension detecting apparatus 59）What is used is equal
It is scraper plate, crossbeam and the chain link of model SGW-250 type drag conveyors.
The detection method that the drag conveyor rocks vibration comprises the following steps：
a）It is that acceleration acquisition module 69 charges by charging hole 46, the data of wireless acquisition module parameter setting is passed through
Data transmission mouth 66 is downloaded in acceleration acquisition module 69.
b）When drag conveyor is run, scraper chain produces and rocks vibration, is that three axles add by radio acceleration acquisition module 69
Velocity sensor 64 provides power supply, and 3-axis acceleration sensor 64 detects that scraper chain produces vibration acceleration signal；
c）The acceleration signal detected is transformed into electric signal output by 3-axis acceleration sensor 64 by rule；
d）After radio acceleration acquisition module 69 collects the signal that 3-axis acceleration sensor 64 is sent, data storage；
e）Radio acceleration acquisition module 69 sends data to radio network gateway by way of being wirelessly transferred, and uniformly
Together shown on a display screen in acquisition terminal reception signal and other measured data.
It is simple in construction, safe and reliable and can realize real-time detection that this scrapes board test device, is scraped to detect in time
Influence when plate chain rocks vibration to drag conveyor, 3-axis acceleration sensor and radio acceleration acquisition module are main
The experimental field dynamic strain measurements such as serious, wiring is cumbersome are far disturbed applied to wire transmission signal distance, in experimentation
Middle experimenter may be located remotely from experimental field, ensure that the highly effective and safe of experiment.Underground scraper conveyor is detected precisely in real time
Scraper chain rocks the change of vibration characteristics during work, and stores the data that test obtains.
6th, rib data acquisition platform is simulated
The analog platform includes pressing plate 72, hydraulic cylinder 73, the three-dimensional planted agent force snesor 70 in matrix form distribution, right pressing plate
74th, right hydraulic cylinder 75, left pressing plate 76, left hydraulic cylinder 77, left bottom plate 78, left slide 79, left support plate 80, right bottom plate 81, right cunning
Seat 82, right support plate 83, right draw move oil cylinder 84, upper backup pad 85, Zola's shifting oil cylinder 86.It is according to underground coal mine to simulate rib 71
The coal petrography mixture that coal petrography hardness pours, left bottom plate 78, right bottom plate 81 and upper backup pad 85 fix on the ground, right pressing plate
74 are pressed in the right side of rib 71 by right hydraulic cylinder 75, and right hydraulic cylinder 75 is arranged in right support plate 83, and right support plate 83 is installed
On right slide 82, right draw is moved oil cylinder 84 and is connected between right support plate 83 and right bottom plate 74, right slide 82 and right bottom plate 74 it
Between to be slidably connected, left pressing plate 78 is pressed in the left side of rib 71 by left hydraulic cylinder 77, and left hydraulic cylinder 77 is arranged on left support plate
On 80, left support plate 80 is arranged on left slide 79, and Zola moves oil cylinder 86 and is connected between left support plate 80 and left bottom plate 78, left
To be slidably connected between slide 79 and left bottom plate 78, the lower end connection liquid cylinder pressure 73 of upper backup pad 85, the lower end of hydraulic cylinder 73 connects
Pressing plate 72 is connect, pressing plate 72 is pressed in the upper end of rib 71.Pour and use by the coal petrography mixture not sieved under having exploited,
By successively pouring to obtain simulation rib.First layer pours completion, after placing a period of time（Ensure that rib still has certain softness
Degree）Sensor is arranged on above this layer in matrix form, after thing to be mixed forms hard rib, next layer is carried out and pours, with
This analogizes the preparation for completing whole rib.So as to simulate the down-hole coal bed environment in colliery location, and then reduce error, hydraulic cylinder
73 are acted on pressing plate 72, right hydraulic cylinder 75 is acted in right pressing plate 74, left hydraulic cylinder 76 is acted on left pressing plate 77 can be to mould
Intend rib to be pressurizeed, to simulate the soil layer load above coal seam, three-dimensional planted agent force snesor 70 is distributed in mould in matrix form
Intend in rib 71, each three-dimensional planted agent force snesor 70 can detect three direction stressing conditions, and single with display in data processing
Shown in member 87, realize the detection for the simulation rib internal stress equipped during mining of mining, one step pitch of coal-winning machine cut is followed
It is left and right to draw the displacement for moving oil cylinder one step pitch of retraction after ring, rib both sides are got out of the way, enable coal-winning machine directly cut to coal
The high order end and low order end of rock.By changing pressure, flow set, you can repeat to simulate soil layer and well on different wells with low cost
The environment in lower coal seam.
The simulation rib model of different hardness can be established on experimental bench, three-dimensional planted agent force snesor can reflect coal-winning machine
The transmission situation of stress wave, main monitoring parameters such as stress in impact and cutting course during the cut coal to rib
The spread scope of ripple, the spread speed of stress wave, the mechanical relationship between subsurface environment coal-winning machine and rib is simulated afterwards.For coal
Charcoal manufacturer is during coal mining, there is provided data reference and theoretical direction, according to data select optimal cutterhead material and
Coal winning technology parameter, carries out the protection work such as supporting in advance, and technical support is provided for coal mining activity, and then improves coal mining efficiency,
Reduce the maintenance cost of coal-winning machine.
Claims (1)
1. a kind of roller moment of torsion detecting system, including cutting motor, motor output shaft gear, motor signal detection means, it is special
Sign is：The roller moment of torsion detecting system also include the driving wheel I that is sequentially engaged with motor output shaft gear and driving wheel II,
The driving wheel III that is coaxially disposed with driving wheel II, idle pulley I ~ III for sequentially being engaged with driving wheel III, engaged with idle pulley III
Planetary gear, the drum gear being coaxially disposed with planetary gear, the roller driven by drum gear；Wherein, idle pulley III rotating shaft is pin
Axle sensor, bearing pin sensor are externally provided with bearing, and bearing is spacing in cover plate, and one end of bearing pin sensor positions spiral shell by bearing pin
Bar is spacing on the cover board；
Roller moment of torsion detecting system carries out stressing conditions detection by the following method：By collecting two sides to bearing pin sensor
To by
Force data Ft, Fr, Ft1 and Ft2 are the force of periphery suffered by idle pulley III, and Ft1 acts on the power to idle pulley III, Ft2 for idle pulley II
For power of the planetary gear reaction to idle pulley III, two power directions equal in magnitude of Ft1 and Ft2 are identical during coal-winning machine section cuts open, by
Formula (1) Ft=Ft1+Ft2 obtains peripheral force Ft1=Ft2=Ft/2, by formula（2）Fr=Fr1-Fr2 obtains resultant radial force Fr, Fr1
To the right, to the left, Fr1 and Fr2 act on axle center to Fr2 simultaneously, in the opposite direction, and equal in magnitude, i.e. Fr1=Fr2, so Fr=0, by
Formula (3) Ft1=T/d obtains actual torque T, i.e. Ft=2T/d, i.e. torque T=Ftd/2；
In formula (1) ~ (3), Ft makes a concerted effort to be circumferential, and Fr is resultant radial force, and Ft1 and Ft2 be the force of periphery suffered by idle pulley III, Fr1 with
Fr2 is idle pulley III force in radial, and T is moment of torsion suffered by idle pulley III, and d is idle pulley III diameter.
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| CN201510213443.3A CN104776948B (en) | 2015-04-29 | 2015-04-29 | Roller moment of torsion detecting system |
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| CN103308225A (en) * | 2012-03-13 | 2013-09-18 | 黄石优利福自动化装备有限责任公司 | Clutch driven plate torque detection device |
| CN203298912U (en) * | 2013-06-18 | 2013-11-20 | 四川宁江精密工业有限责任公司 | Bearing torque detecting device |
| CN204575230U (en) * | 2015-04-29 | 2015-08-19 | 辽宁工程技术大学 | Cylinder moment of torsion detection system |
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