CN104776993B - Guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus - Google Patents
Guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus Download PDFInfo
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- CN104776993B CN104776993B CN201510209217.8A CN201510209217A CN104776993B CN 104776993 B CN104776993 B CN 104776993B CN 201510209217 A CN201510209217 A CN 201510209217A CN 104776993 B CN104776993 B CN 104776993B
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Abstract
A kind of guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus, fundamentally solve the problems such as existing drum shearer mechanical characteristic detection error is big, detection number of parameters is few, testing result can not be applied to actual production, including mounting seat, guide plate, drive gear, the pin row engaged with drive gear, it is characterized in that：Mounting seat passes through guide slip shoe hinge with guide plate, guide slip shoe bearing pin is Pyatyi ladder tubular structure, bearing pin is spacing in mounting seat by the first order and level V, it is spacing on guide plate by the second level and the fourth stage, drive gear is spacing on the third level by the bearing at two ends, the junction of ladder tubulars at different levels corresponds to be provided with positioned at bearing pin two ends foil gauge group I~IV respectively, a foil gauge group I~IV part is arranged on the horizontal direction in bearing pin section, an order part for foil gauge group is arranged on the vertical direction in bearing pin section, it is spacing in guide slip shoe bearing pin to have dynamometry bolt.
Description
Technical field
The present invention relates to coal mine machinery field, specifically a kind of guide sliding shoe of coal-winning machine mechanical characteristic detects dress in real time
Put.
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 with recording, and the manufacturing for being used to instruct coal mining machine after interpretation of result will be recorded, the phase in coal-winning machine is needed 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.
Guide slip shoe is served to coal-winning machine to be carried in support and walking guide effect, practical work process by roller cut
Lotus, the influence of scraper plate machine circuit bending, can cause and produce greater impact between guide slip shoe and pin row on scrapper conveyor
Load, in addition both be in dry condition, often cause guide slip shoe occur bottom dog portion fractures, be oriented to side wall complete rupture,
The accidents such as wearing layer heavy wear, in addition, the damage of guide slip shoe can also cause to destroy to a certain degree to pin row, by being oriented to
The stress of piston shoes is detected, can disclose the force-mechanism of guide slip shoe, is that structure optimization, the raising of guide slip shoe use the longevity
Life provides data.
In addition, down-hole coal excavation operation process, which would generally be related to rib, is caving scope, coal-winning machine and rib impulsive force, stress
The parameters such as the measurement of ripple spread scope and spread speed, but because subsurface environment is complicated, may not be preceding in rib in exploitation
Middle install sensor, even if the problem of not considering fund, construction safety, difficulty of construction, sets up sensor, gesture in original rib
Original rib inner structure must be influenceed, accurate measurement result can not be obtained at all.Therefore, needing a kind of underground coal mine environment badly
Rib model.
The content of the invention
It is an object of the invention to provide a kind of guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus, fundamentally solve
The problem of mechanics performance data under drum shearer operating mode can not be detected, its have it is simple in construction, easy to use, be easy to behaviour
Control, the advantages of Data Detection is directly perceived, testing result is reliable.
The object of the present invention is achieved like this：The guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus includes installing
Seat, guide plate, drive gear, the pin row engaged with drive gear, it is characterised in that：Mounting seat passes through guide slip shoe with guide plate
Hinge, guide slip shoe bearing pin is Pyatyi ladder tubular structure, and bearing pin is spacing in mounting seat by the first order and level V,
Spacing on guide plate by the second level and the fourth stage, drive gear is spacing on the third level by the bearing at two ends, Ge Jijie
The junction of terraced tubular is corresponded to respectively to be provided with positioned at bearing pin two ends foil gauge group I~IV, foil gauge group I~IV part peace
Horizontal direction mounted in bearing pin section, an order part for foil gauge group is arranged on the vertical direction in bearing pin section, guide slip shoe pin
Spacing in axle to have dynamometry bolt, dynamometry bolt one end is by being screwed in guide slip shoe bearing pin, and the other end is by being fixed on installation
End plate sealing on seat, between the inwall of guide slip shoe bearing pin and the outer wall of dynamometry bolt, mounting seat inwall and guide plate outer wall
Between, just coincide between guide plate inwall and drive gear outer wall, prevent guide slip shoe bearing pin from being moved in the axis hole of mounting seat
Dynamic or rotation.
The simulation rib data acquisition platform includes being located at the pressing plate at the top of simulation rib, the hydraulic pressure for driving pressing plate
Cylinder, in matrix form be distributed in simulation rib in three-dimensional planted agent's force snesor, simulation rib be according to underground coal mine coal petrography hardness
The coal petrography mixture poured.
The detection means can be applied to drum shearer and coal plough simultaneously, pass through coal-winning machine each several part sensing unit
Linkage, accurately measure the true mechanical characteristic data of each test equipment of outfit.The test system may not only be applied to work
The real-time monitoring of coal-winning machine relevant parameter under condition, and it is complicated to coordinate simulation rib data acquisition platform to simulate underground on well
Operating environment.For manufacturer, there is provided hair data reference and theory during research and development flitting fully mechanized mining outfit
Instruct.
Brief description of the drawings
Fig. 1 is system architecture diagram of the 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 flat slippery boots assembly of the invention；
Fig. 7 is the main structure diagram of flat slippery boots assembly of the 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 rocks the assembling structure schematic diagram of vibration detection device for the present invention；
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 right draw move oil cylinders, 85 upper backup pads, 86 Zolas and 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 guide sliding shoe of coal-winning machine power
Learn coal mining machine data acquisition platform, simulation rib data that characteristic real-time detection apparatus includes with data collection station being connected respectively
Acquisition platform, hydraulic support data acquisition platform, drag conveyor data acquisition platform.
Wherein, coal mining machine data acquisition platform includes cut tooth by force detection system, drum rotation speed detecting system, coal-winning machine
Vibration detecting system, smooth boots are by force detection system, guide slip shoe by force detection system, coal-winning machine position detecting system, coal mining
Machine hydraulic pressure draw-bar is 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, scraper plate
Conveyer voltage/current/power detecting system, drag conveyor vibration detecting system, the detection of the middle pan of scraper conveyor stress
System, drag conveyor dumbbell are by force detection system, drag conveyor position detecting system.
1) 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 the parts such as hard alloy head 4, snap ring 5, tooth set 6, toothholder 7, fixture block 14, and pick unit is fixed on roller 1 by fixture block
Helical blade 3 on.In hard alloy head end insertion toothholder, and fixation is covered by the outside tooth for being socketed snap ring.Toothholder bottom
Provided with disc structure, disk bottom car, which goes out in the middle part of the cylindrical structure that diameter is less than disk, cylindrical structure to mill out, is inscribed in cylinder circle
Processing is located at leading on each side center line of octagon post on octagon rod structure in tee section, cylindrical structure bottom outer wall
Wire casing 10, is respectively separated installation foil gauge 9 and strain rosette 8 in the same position of octagon post.Fixture block 15 is with inner chamber
The fixture block pin-and-hole 13 and wire guide communicated with inner chamber for a pair is processed on the semi-closed structure of (angle is not shown in figure), fixture block 15
14, cylindrical structure bottom processing mounting blocks 16, mounting blocks 16 are provided with a pair of mounting blocks pin-and-holes being engaged with fixture block pin-and-hole 13
11, the mounting blocks 16 of toothholder bottom are inserted in the inner chamber of fixture block 15, and spacing by steady pin 15, and the other end is limited by disc structure
Position is by fixture block bore seal.Foil gauge 9 and the wire of strain rosette 8 are connected up downwards along metallic channel 10, leading by fixture block 14 after collecting
String holes 16 is drawn to be 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, and is that A/D converter 21 is powered, data storage 22 is powered, transmitter module is powered.The positive pole of power module 20 leads to
The positive pole for crossing wire and foil gauge 9 or strain rosette 8 (not shown in figure, the same foil gauge of its annexation) is 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 by the three axis force measured value real-time Transmission in data storage 22 to be located at computer room in
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 preventing 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, the destruction that can prevent underground rugged environment from being caused to 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 has safely provided sound assurance with guarantee coal mining activity.
During work, roller is arranged on coal-winning machine with main axis with digger, and stress is produced 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 are produced 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, and reflection in real time on a display screen, can be cut not changing after computer data processing
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.
2) 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 each in groove to install one and strain provided with two annular grooves 28
Piece group 29 a, part for foil gauge group is 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) full-bridge connected mode is used, in the case of zero load, the initial strain size of each foil gauge is recorded；
2) Y-direction and Z-direction respectively to the smooth boots of coal-winning machine applies 10000N, 20000N, 30000N, 40000N fixed load
Lotus, and record corresponding variate (i.e. 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) bearing pin demarcated is installed on smooth boots, under operating mode, foil gauge passes through full-bridge circuit, big brief biography will be strained
It is defeated to be processed into smooth boots Y-direction and Z-direction stress size through PLC Programs into PLC, and shown in real time on screen, Fy directions by
Force signal is Sy, and Fz directions are Sz by force signal.
3) 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
It is hinged with guide plate 33 by guide slip shoe bearing pin 37, 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 two ends, and the junction of ladder tubulars at different levels is corresponded to respectively installs
Have positioned at bearing pin two ends foil gauge group I~IV39~41, a foil gauge group I~IV part is arranged on the level side in bearing pin section
Being arranged on to an order part for, foil gauge group spacing in the vertical direction in bearing pin section, guide slip shoe bearing pin 37 has dynamometry bolt
36, the one end of dynamometry bolt 36 is threadedly attached in guide slip shoe bearing pin 37, and the other end is by being fixed in mounting seat 30
End plate 35 is sealed, between the inwall of guide slip shoe bearing pin 37 and the outer wall of dynamometry bolt 36, mounting seat inwall and guide plate outer wall
Between, just coincide between guide plate inwall and drive gear outer wall, prevent guide slip shoe bearing pin 37 in the axis hole of mounting seat 30
Interior movement or rotation.During coal work, interaction is produced between the pin row 34 on guide slip shoe and scrapper conveyor, at this moment guide slip shoe
On each part suffered by power act on dynamometry bearing pin so that bearing pin is deformed, dynamometry bearing pin draws while deformation
Play each foil gauge 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) X-direction to dynamometry bearing pin is demarcated：It is fulcrum 1 in the middle part of one-level, two grades of middle parts are for branch in the middle part of fulcrum 2, level Four
It is fulcrum 4 in the middle part of point 3, Pyatyi；F1 is relative with the position of fulcrum 2, and F2 and F3 are positioned at the two ends of the bearing pin third level, F4 and 3, fulcrum
Put relative.
A) fixed pivot 1, applies foil gauge group 1 under 0,10,20,30,40 ton forces, the different F1 of record correspondence to F1 respectively
Strain value T1；
B) fixed pivot 2, apply foil gauge group 2 under 0,10,20,30,40 ton forces, the different F2 of record correspondence to F2 respectively
Strain value T2；
C) fixed pivot 3, apply foil gauge group 3 under 0,10,20,30,40 ton forces, the different F3 of record correspondence to F3 respectively
Strain value T3；
D) fixed pivot 4, apply foil gauge group 4 under 0,10,20,30,40 ton forces, the different F4 of record correspondence to F4 respectively
Strain value T4；
E) and then to the data of demarcation analyzed and be 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
Strain value M1~M4, obtains 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, as shown in figure 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.
4) 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 engaged 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
The parts such as the roller that drum gear 50 drives.Wherein, idle pulley III49 (adjacent with the planetary gear 51 of roller) rotating shaft passes for bearing pin
Sensor 53, bearing pin sensor 53 is externally provided with bearing 52, and bearing 52 is spacing in cover plate 55, and one end of bearing pin sensor 53 passes through pin
Axle positioning screw 54 is spacing on cover plate 55.
Bearing pin sensor can be obtained by shearing action, analysis, (1) Ft=Ft1+Ft2；(2)Ft=Fr1-Fr2；(3)Ft1=T/d.
FtMake a concerted effort to be circumferential, FrFor resultant radial force, Ft1And Ft2The force of periphery suffered by idle pulley III, Fr1And Fr2Suffered by idle pulley III radially
Power, T is moment of torsion suffered by idle pulley III, and d is idle pulley III diameter.
By the stress data F that both direction is collected to bearing pin sensort(Y-direction), Fr(X-direction), wherein Ft1With
Ft2The force of periphery suffered by idle pulley III, wherein Ft1The power to idle pulley III49, F are acted on for idle pulley II48t2For the reaction of planetary gear 51
To idle pulley III49 power, F in coal-winning machine cutting courset1And Ft2Two power directions equal in magnitude are identical, and week is obtained by formula (1)
To power Ft1=Ft2=Ft/ 2, resultant radial force F is obtained by formula (2)rBecause such as Figure 17, Fr1To the right, Fr2To the left, Fr1And Fr2Simultaneously
Axle center is acted on, in the opposite direction, and equal in magnitude, i.e. Fr1=Fr2, so Fr=0, actual torque T is obtained by formula (3), i.e.,
Ft1=2T/d, i.e. torque T=Ft·d/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, the measurement according to 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 obtained by speed reducing ratio calculating.So as to avoid conventional method by detecting current of electric ripple
The dynamic error determined in torque method, effectively eliminates the interference of extraneous factor, in real time the transient state output under monitoring roller operating mode
Moment of torsion and rotating speed, once moment of torsion occur occurs abnormal conditions, and it is just rapid to adjust working condition, it is to avoid to damage transmission system, for
Improve drum shearer operating reliability and protection main transmission is significant.
5) 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
Some chain annular grooves 58, chain link are provided with the crossbeam 61 surveyed device 62, be fixed on by bolt 56 and nut 57 on scraper plate 60, scraper plate
Provided with tension detecting apparatus 59 (chain link for carrying foil gauge) in groove, the bottom at scraper plate two ends is respectively equipped with groove.Rock vibration
Detection means 62 includes spacing in housing, the detection baffle plate 63 that is fixed on housing, detection baffle plate having 3-axis acceleration sensor
64, in housing it is spacing have set on the acceleration acquisition module 69 being connected with the output end of 3-axis acceleration sensor 64, detection 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 sealing-plug 67 being hinged with detection bottom plate.When in test process or when not in use, with close
Blocking 67 is clogged, when needing data being transmitted, and sealing-plug 67 is opened, carried out data transmission.It is solid by bolt
Regular inspection survey baffle plate 63 is fixed on the two 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 transmission
Data, sealing-plug 67 is opened, carried out data transmission.It is equal that scraper plate 60, crossbeam 61 and chain link (tension detecting apparatus 59) are used
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) charged by hole 46 of charging for acceleration acquisition module 69, the data of wireless acquisition module parameter setting are 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 scraper chain and produces vibration acceleration signal；
C) acceleration signal detected is transformed into electric signal output by 3-axis acceleration sensor 64 by rule；
D) radio acceleration acquisition module 69 is collected after 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
Signal is received in acquisition terminal together to show on a display screen with 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 of plate chain when rocking vibration to drag conveyor, 3-axis acceleration sensor and radio acceleration acquisition module are main
Applied to wire transmission signal distance be far disturbed seriously, the experimental field dynamic strain measurement such as cumbersome is connected up, in experimentation
Middle experimenter may be located remotely from experimental field, it is ensured that the highly effective and safe of experiment.
Scraper chain rocks the change of vibration characteristics during the work of detection underground scraper conveyor precisely in real time, and stores survey
Try obtained data.
6) rib data acquisition platform is simulated
The analog platform includes pressing plate 72, hydraulic cylinder 73, the three-dimensional planted agent force snesor 70 being distributed in matrix form, 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 is poured, left bottom plate 78, right bottom plate 81 and upper backup pad 85 are fixed 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 using the coal petrography mixture not sieved under having exploited,
Obtain simulating rib by successively pouring.First layer pours completion, places after a period of time and (ensures that rib still has certain softness
Degree) sensor in matrix form is arranged on this layer of top, thing to be mixed is formed after hard rib, is carried out next layer and is poured, 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 set up on experimental bench, three-dimensional planted agent force snesor can reflect coal-winning machine
The transmission situation of stress wave in impact and cutting course during the cut coal to rib, main monitoring parameter such as stress
The spread scope of ripple, the spread speed of stress wave, simulate the mechanical relationship between subsurface environment coal-winning machine and rib afterwards.For coal
Charcoal manufacturer 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, and then raising coal mining efficiency are provided for coal mining activity,
Reduce the maintenance cost of coal-winning machine.
Claims (1)
1. a kind of guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus, including mounting seat, guide plate, drive gear and drive
The pin row of moving gear engagement, it is characterised in that：Mounting seat is with guide plate by guide slip shoe hinge, and guide slip shoe bearing pin is
Pyatyi ladder tubular structure, bearing pin is spacing in mounting seat by the first order and level V, spacing by the second level and the fourth stage
On guide plate, drive gear is spacing on the third level by the bearing at two ends, and the junction of ladder tubulars at different levels is corresponded to respectively
It is provided with positioned at bearing pin two ends foil gauge group I~IV, a foil gauge group I~IV part is arranged on the level side in bearing pin section
Being arranged on to an order part for, foil gauge group spacing in the vertical direction in bearing pin section, guide slip shoe bearing pin has dynamometry bolt, survey
Power bolt one end is by being screwed in guide slip shoe bearing pin, and the other end is sealed by the end plate being fixed in mounting seat, is oriented to and is slided
Between the inwall of boots bearing pin and the outer wall of dynamometry bolt, between mounting seat inwall and guide plate outer wall, guide plate inwall and driving
Just it is coincide between gear outer wall, prevents guide slip shoe bearing pin from moving or rotating in the axis hole of mounting seat；
Guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus also includes simulation rib data acquisition platform, simulates rib data
Acquisition platform includes being located at the pressing plate at the top of simulation rib, the hydraulic cylinder for driving pressing plate, is distributed in simulation coal in matrix form
Three-dimensional planted agent's force snesor in wall, simulation rib is the coal petrography mixture poured according to underground coal mine coal petrography hardness；
The method of testing of the guide sliding shoe of coal-winning machine mechanical characteristic real-time detection apparatus comprises the following steps：
Step 1）X-direction demarcation to dynamometry bearing pin：It is fulcrum 1 in the middle part of one-level, two grades of middle parts are for branch in the middle part of fulcrum 2, level Four
It is fulcrum 4 in the middle part of point 3, Pyatyi；F1 is relative with the position of fulcrum 2, and F2 and F3 are positioned at the two ends of the bearing pin third level, F4 and 3, fulcrum
Put relative；
A) fixed pivot 1, applies the strain of foil gauge group 1 under 0,10,20,30,40 ton forces, the different F1 of record correspondence to F1 respectively
Value T1；
B) fixed pivot 2, apply the strain of foil gauge group 2 under 0,10,20,30,40 ton forces, the different F2 of record correspondence to F2 respectively
Value T2；
C) fixed pivot 3, apply the strain of foil gauge group 3 under 0,10,20,30,40 ton forces, the different F3 of record correspondence to F3 respectively
Value T3；
D) fixed pivot 4, apply the strain of foil gauge group 4 under 0,10,20,30,40 ton forces, the different F4 of record correspondence to F4 respectively
Value T4；
E) and then to the data of demarcation analyzed and be fitted, obtained between each foil gauge group unit strain value and outside force
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；
Step 2) Y-direction of bearing pin is demarcated using X-direction identical method：Record foil gauge group 1~4 under different F1~F4
Strain value M1~M4, obtains FM1=31.3193 × M1+0.0665；FM2=35.1973 × M2-0.6587；FM3=36.6102
×M3-0.4863；FM4=31.8852 × M4-0.0718；
Step 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.
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Address after: No. 192 andingmenwai street, Dongcheng District, Beijing 100011 Patentee after: CHINA NATIONAL COAL MINING EQUIPMENT Co.,Ltd. Patentee after: LIAONING TECHNICAL University Address before: 123000 No. 47 Zhonghua Road, Liaoning, Fuxin Patentee before: LIAONING TECHNICAL University Patentee before: CHINA NATIONAL COAL MINING EQUIPMENT Co.,Ltd. |
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