CN110406951A - A kind of method and apparatus controlling filling drag conveyor discharging window using ultrasonic distance measurement - Google Patents
A kind of method and apparatus controlling filling drag conveyor discharging window using ultrasonic distance measurement Download PDFInfo
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- CN110406951A CN110406951A CN201910667579.XA CN201910667579A CN110406951A CN 110406951 A CN110406951 A CN 110406951A CN 201910667579 A CN201910667579 A CN 201910667579A CN 110406951 A CN110406951 A CN 110406951A
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- Prior art keywords
- controller
- threshold
- discharge port
- drag conveyor
- ultrasonic
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/34—Devices for discharging articles or materials from conveyor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
Abstract
A kind of method and apparatus controlling filling drag conveyor discharge port using ultrasonic distance measurement install supersonic generator and ultrasonic receiver including the lower part at every hydraulic support rear portion, in the controller preset first threshold value；It when filling operation starts, is filled from the downward discharging of discharge port of filling drag conveyor, controller controls supersonic generator and issues signal, and ultrasonic receiver receives the signal that supersonic generator is reflected by Gangue, and sends a signal to controller；Controller records supersonic generator and issues the time of signal and the time of ultrasonic receiver reception signal, calculates the time difference between the two, obtains second threshold according to the time difference；Controller calculates the difference between first threshold and second threshold, if second threshold is not more than first threshold, controller controls electro hydraulic valve controller action, and electro-hydraulic valve control controls the cylinder action being connected on discharge port, closes to discharge port.Operation of the present invention and maintenance are convenient, method is simple, high reliablity, safety are good, have extensive practicability.
Description
Technical field
The present invention relates to a kind of measurement method of spoil piling height, especially a kind of coal mine work solid material filling is opened
The method of real-time monitoring spoil piling height is needed during adopting.
Background technique
Currently, well known filling drag conveyor discharging intermediate channel is to open and close plate, discharging intermediate channel sheet by blanking window
Body, plate sliding control oil cylinder, manual operating valve, high-pressure hose, connector, U-shaped card, sealing element composition.Since filling scraper plate is defeated
It send the discharging window of machine to need to open from tail to head sequence, after the discharging for completing this section, is turned off manually.When unlatching, need
Operator manipulates hand-operated direction valve, and high-pressure emulsion flows to hydraulic support by pipeline from the emulsion power pack for being located at transportation roadway
Feed liquor Plane stop valve, then into operating valve set control filling drag conveyor blanking window plate valve, flowed to through this plate valve
Window opens and closes the rod end chamber of oil cylinder, and piston rod retracts, and drives the movement of blanking plate, to open blanking window, realizes discharging,
Operator is relied in discharge process and observes packing job situation towards goaf, is judged that attal piling height reaches and is wanted
When asking, blanking window manipulation valve is pulled, high-pressure emulsion enters the plunger shaft of blanking window control oil cylinder, and piston rod is released, pushed away
It moves blanking plate and closes current discharging window, operator, towards next bracket is moved towards, operates and previously adjacent along work
Blanking window control oil cylinder, until all blanking windows are operated one time, i.e. one blanking circulation of completion.In whole operation process
In, piling height of the attal at bracket rear portion directly affects pack completeness.Past is mainly used in " under three due to filling mining
Mine " (under building, under highway, under water body), consider from strict control surface subsidence, it is desirable that the higher the better for pack completeness, still
As domestic various regions environmental protection policy was becoming tight in recent years, to solve underground water, air pollution caused by the accumulation of ground hillock
And the problems such as land occupation, multiple big provinces of producing coal have put into effect documentation requirements coal mining spoil not gug, have examined from this angle
Consider, pack completeness and control surface subsidence are no longer just the sixty-four dollar questions paid close attention to required for filling mining, and why critical issue is
Solving spoil, gug does not combine coal mining production efficiency.
Summary of the invention
The object of the present invention is to provide it is a kind of it is simple and reliable, the degree of automation is higher, do not depend on artificial judgment and operation
On-line monitoring filling waste rock piling height fills the control method of drag conveyor blanking close to control.
The invention adopts the following technical scheme:
A method of filling drag conveyor discharge port is controlled using ultrasonic distance measurement, comprising:
ST1: lower part installation supersonic generator and ultrasonic receiver at every hydraulic support rear portion, the ultrasonic wave occur
Device and ultrasonic receiver are mounted on the discharging epistome of filling drag conveyor；
ST2: preset first threshold value in the controller；
ST3: when filling operation starts, spoil moves spoil material to goaf by filling drag conveyor, and scrapes from filling
The downward discharging of the discharge port of plate conveyer is filled, meanwhile, controller controls supersonic generator and issues signal, and ultrasonic wave connects
It receives device and receives the signal that supersonic generator is reflected by Gangue, and send a signal to controller；
ST4: controller records supersonic generator and issues the time of signal and the time of ultrasonic receiver reception signal, calculates
Time difference between the two obtains second threshold according to the time difference；
ST5: the difference between controller first threshold and second threshold controls if second threshold is not more than first threshold
Device controls electro hydraulic valve controller action, and electro-hydraulic valve control controls the cylinder action being connected on discharge port, carries out to discharge port
Closing.
In the ST2, first threshold is time difference threshold value, if the time difference that controller calculates is not more than time difference threshold
Value, then controller controls electro hydraulic valve controller action, and electro-hydraulic valve control controls the cylinder action being connected on discharge port, to unloading
Material mouth is closed.
In the ST2, first threshold is height threshold of the hydraulic support to Gangue, and controller obtains supersonic generator
After time difference between the signal and ultrasonic receiver received signal of sending, according to the transmission speed of signal, when calculating
Between the corresponding altitude information of difference, if altitude information is not more than height threshold, controller controls electro hydraulic valve controller action, electricity
Liquid valve control controls the cylinder action being connected on discharge port, closes to discharge port.
The supersonic generator and ultrasonic receiver are mounted on the coal wall in the discharging epistome of filling drag conveyor
Side channel is helped.
A kind of device of above-mentioned method, including hydraulic support, the rear portion connection filling drag conveyor of hydraulic support, fill
The discharge port for filling out drag conveyor is suspended on the lower section at hydraulic support rear portion；
Ultrasonic transmitter and ultrasonic receiver are installed below the hydraulic support in discharging epistome, are also connected on hydraulic support
There is controller, controller connects ultrasonic transmitter and ultrasonic receiver；
Solenoid valve controller is also equipped at the discharge port, solenoid valve controller connects the hydraulic oil opened and closed to discharge port
Cylinder, controller connect solenoid valve controller.
Beneficial effects of the present invention:
Back wave concept of retro reflection when the present invention is mapped on the spoil mixed material for bashing using ultrasonic wave, is filling
Ultrasonic transmission device and reception device are set on each section groove body of drag conveyor, issued by ultrasonic transmission device super
Sound wave and reception device receive the time difference of back wave to judge spoil piling height, before filling starts, in advance to super
Acoustic wave analysis device sets a upper threshold value, according to ultrasonic analysis device to the result of time difference operation and it is preset on
Threshold value compares, and when spoil piling height is up to or over upper threshold value, issues electric signal by ultrasonic analysis device and gives
The controller control filling drag conveyor blanking window control oil cylinder of electrohydraulic control system closes blanking window, realizes automation
Close window.It can efficiently and accurately realize that blanking automates, make it possible that filling mining is unmanned or close unmanned, improve filling
Working efficiency reduces operator and institute Fei Rengong, makes working face staff far from filling adverse circumstances.Its operation and maintenance
It is convenient, method is simple, high reliablity, safety are good, there is extensive practicability.
Detailed description of the invention
Fig. 1 is method schematic diagram of the present invention using ultrasonic distance measurement control filling drag conveyor discharging window.
Fig. 2 is method flow diagram of the present invention using ultrasonic distance measurement control filling drag conveyor discharging window
Fig. 3 is the scheme of installation of the supersonic generator being related in the present invention and ultrasonic receiver on ledge.
1. coal wall, 2. top plates, 3. filling hydraulic supports, 4. supersonic generators, 5. ultrasonic receivers, 6. fillings are scraped
Plate conveyer, 7. spoils, 8. controllers, 9. electro-hydraulic valve controls, 12 steel bands, 14. bastard coal clitters.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description.
The present invention provides a kind of method for controlling filling drag conveyor discharge port using ultrasonic distance measurement, and this method includes
Once step:
ST1: in the lower section installation supersonic generator at every hydraulic support rear portion and corresponding ultrasonic receiver, to guarantee to survey
The accuracy of amount, supersonic generator and ultrasonic receiver are preferably mounted at the discharging epistome of filling drag conveyor, tool
Body is to be mounted on every section groove body of filling drag conveyor on the ledge of coal wall side, the ultrasonic wave installed on every section groove body
The supersonic generator installed on receiver and the section groove body is corresponding.
ST2: installing controller on filling hydraulic support, which includes but is not limited to existing processor, such as
CPU, PLC etc., and controller is connect with supersonic generator and ultrasonic receiver, issues letter for controlling supersonic generator
Number and receive ultrasonic receiver issue signal.
ST3: presetting first threshold in controller, which is configured before filling operation starts.It is specific next
It says, before filling operation starts, the position of the subsurface according to locating for the scene of mining is needed to judge that filling to be achieved is closely knit
Degree, comprehensively considers the ingredient and various composition proportion of attal, spoil packed height to be achieved is determined, according to this
Packed height, and then obtain first threshold data.
Such as by taking certain mine as an example, added according to the amount containing cash of the adopted raw coal in underground and ground coal preparation plant to underground transportation gangue
The freight volume of bulk cargo is filled in the mixing such as the clay of proper proportion, determines the upper threshold value of the spoil bulk cargo piling height to be filled, when
The supply of spoil bulk cargo can be set that upper threshold value is larger when more sufficient, for example can be set as the 50% of institute's extracting seam thickness, when being used for
The supply of the spoil bulk cargo of filling can set the material accumulation height upper threshold value of filling as the 30% of institute's extracting seam thickness when less.
ST4: when filling operation starts, spoil 7 transports spoil material to goaf by filling drag conveyor 6,
The Coal Transport of direction and coal working face it is contrary, i.e., from entering close to air return lane, transport to always close to transportation roadway.This
When, the hydraulic cylinder installed at the discharge port of transportation roadway side filling drag conveyor 6 is come under the control of solenoid valve controller
It opens and starts attal, while controller control is mounted on ultrasonic wave transmitting of the section charging conduit on the ledge of coal wall side
Device emits ultrasonic wave, which is fallen in the reflection of the Gangue on bottom plate, and then part back wave is connect by ultrasonic receiver
It receives.
ST5: controller 8 record supersonic generator 4 issue signal time and ultrasonic receiver 5 receive signal when
Between, the time difference between the two is calculated, second threshold is obtained according to the time difference；
ST6: the difference between controller first threshold and second threshold controls if second threshold is not more than first threshold
Device controls electro hydraulic valve controller action, and electro-hydraulic valve control controls the cylinder action being connected on discharge port, carries out to discharge port
Closing.
The numerical value for the first threshold being arranged in the controller installed on above-mentioned each hydraulic support may be the same or different.
In above-mentioned ST3, first threshold may be configured as a variety of threshold value forms.
First threshold may be configured as time difference threshold value, the time difference threshold value indicate supersonic generator 4 issue signal when
Between ultrasonic receiver 5 receive signal time between time difference, preset when bastard coal clitter 14 reaches maximum height
When, supersonic generator 4 issues the time of signal and ultrasonic receiver 5 receives time difference between the time of signal as the
One threshold value；If that the time difference that controller calculates is not more than time difference threshold value, then illustrate that the height of bastard coal clitter 14 has reached
It arrives or more than maximum height, controller controls electro hydraulic valve controller action at this time, electro-hydraulic valve control control is connected to discharging
Cylinder action on mouth, closes discharge port.
Or
First threshold is height threshold, which can be hydraulic support to the first height threshold of Gangue or bottom surface
The second height threshold at the top of to bastard coal clitter.
When for the first height threshold, controller obtains the signal that supersonic generator issues and ultrasonic receiver receives
Signal between time difference after, according to the transmission speed of signal, calculate time difference corresponding altitude information, the altitude information
Half be ultrasonic signal reflection point on supersonic generator to bastard coal clitter oblique range data, at this time by the way that this is oblique
A half data of range data between range data, supersonic generator and ultrasonic receiver installation site, further according to hook stock
Theorem can be obtained altitude information of the current bastard coal clitter apart from hydraulic support, if the altitude information is no more than the first height
Threshold value, then controller controls electro hydraulic valve controller action, and electro-hydraulic valve control controls the cylinder action being connected on discharge port, right
Discharge port is closed.
When for the second height threshold, need to obtain supersonic generator or ultrasonic receiver at this time in advance the bottom of apart from
Then the height in face obtains the altitude information highly with above-mentioned current bastard coal clitter apart from hydraulic support, can be obtained bastard coal
Clitter top to bottom surface altitude information, if the altitude information be not more than the second height threshold, controller control electro hydraulic valve
Controller action, electro-hydraulic valve control control the cylinder action being connected on discharge port, close to discharge port, stop falling
Material.
As shown in Fig. 2, the present invention passes through in-site measurement supersonic generator first when first threshold is the second height threshold
Distance with ultrasonic receiver apart from bottom plate, and calculate after reaching setting piling height, supersonic generator and receiver
Distance at the top of filler material material heap calculates the time difference that ultrasonic wave sends and receives with this, as attal material heap
The upper threshold value of piling height, when packing job starts, the time difference that ultrasonic wave sends and receives centainly is greater than set
Time difference, the signal of ultrasonic receiver is after A/D converter connected to the controller conversion, then distance letter is calculated
Number, and compared with the first threshold of setting, first threshold is such as not achieved, then controller gives electro-hydraulic valve control by route
Signal opens discharging window, continues discharging.The rationally pulse frequency that setting ultrasonic wave issues.As surrounding time difference has equalized
Or the threshold value less than original setting, then signal being transmitted to electro-hydraulic control valve device, electro-hydraulic control valve device controls discharging close,
Stop filling.
Connection carries out closed baffle to discharge port at above-mentioned discharge port, the hydraulic oil of installation control baffle opening and closing on baffle
Cylinder, hydraulic cylinder are controlled by solenoid valve controller.
To guarantee the accuracy measured, drag conveyor is filled close to the slot of coal wall side under top beam after every hydraulic support
It helps and at least one ultrasonic transmitter and the corresponding ultrasonic receiver of quantity is installed.
The present invention also provides it is a kind of should device with the aforedescribed process, which includes existing backfill hydraulic support and adopts
Device for coal, difference are to be additionally provided with ultrasonic transmitter 4 and ultrasonic receiver 5, and the controller connecting with them.
Specifically, the inventive system comprises hydraulic support 3, the rear portion connection filling drag conveyors of hydraulic support 3
6, the discharge port of filling drag conveyor 6 is suspended on the lower section at 3 rear portion of hydraulic support；3 lower section of hydraulic support in discharging epistome
Ultrasonic transmitter 4 and ultrasonic receiver 5 are installed, controller 8 is also connected on hydraulic support 3, controller 8 connects ultrasound
Wave launcher 4 and ultrasonic receiver 5；
Filling 3 front of hydraulic support is equipped with the forward scraper reclaimer of transport coal and rides over adopting on forward scraper reclaimer
Coal machine, bracket rear portion are hung with filling drag conveyor 6 under rear top beam.The device and arrangement are the prior art, no longer old
It states.
Slot of the blowpit of the filling drag conveyor 6 hung under the rear top beam of every hydraulic support 3 close to bracket side
Helping one ultrasonic transmitter 4 of setting and a ultrasonic receiver 5, ultrasonic transmitter 4 and ultrasonic receiver 5 is into
To installation, and it is fixed by steel band 12.
Controller 8 is set on the front rod of filling hydraulic support 3, is arranged between two columns of filling hydraulic support 3
There is the opening and closing of discharge port of the electro-hydraulic control valve device 9 for controlling filling drag conveyor 6, wherein controller 8 and control discharging
The electro-hydraulic control valve device of slot discharging window is connected.
As shown in figure 3, being to be received after the ultrasonic wave of supersonic generator sending is filled through the reflection of material material heap by ultrasonic wave
The received round schematic diagram of device, material heap is higher, and the walked route of ultrasonic wave is shorter, issues smaller with the received time difference.
In the description of this specification, particular features, structures, materials, or characteristics can be real in any one or more
Applying can be combined in any suitable manner in example or example.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those skilled in the art the invention discloses in the range of, the variation or replacement that can be readily occurred in should all be covered
Within the scope of the present invention.
Claims (5)
1. a kind of method for controlling filling drag conveyor discharge port using ultrasonic distance measurement characterized by comprising
ST1: lower part installation supersonic generator and ultrasonic receiver at every hydraulic support rear portion, the ultrasonic wave occur
Device and ultrasonic receiver are mounted on the discharging epistome of filling drag conveyor；
ST2: preset first threshold value in the controller；
ST3: when filling operation starts, spoil transports spoil material to goaf by filling drag conveyor, and scrapes from filling
The downward discharging of the discharge port of plate conveyer is filled, meanwhile, controller controls supersonic generator and issues signal, and ultrasonic wave connects
It receives device and receives the signal that supersonic generator is reflected by Gangue, and send a signal to controller；
ST4: controller records supersonic generator and issues the time of signal and the time of ultrasonic receiver reception signal, calculates
Time difference between the two obtains second threshold according to the time difference；
ST5: controller calculates the difference between first threshold and second threshold, if second threshold is not more than first threshold,
Controller controls electro hydraulic valve controller action, and electro-hydraulic valve control controls the cylinder action being connected on discharge port, to discharge port
It is closed.
2. a kind of method for controlling filling drag conveyor discharging window using ultrasonic distance measurement according to claim 1,
It is characterized by:
In the ST2, first threshold is time difference threshold value, if the time difference that controller calculates is not more than time difference threshold value,
Controller controls electro hydraulic valve controller action, and electro-hydraulic valve control controls the cylinder action being connected on discharge port, to discharge port
It is closed.
3. a kind of method for controlling filling drag conveyor discharging window using ultrasonic distance measurement according to claim 1,
It is characterized by:
In the ST2, first threshold is height threshold of the hydraulic support to Gangue, and controller obtains supersonic generator and issues
Signal and ultrasonic receiver received signal between time difference after, according to the transmission speed of signal, calculate the time difference
Corresponding altitude information, if altitude information is not more than height threshold, controller controls electro hydraulic valve controller action, electro hydraulic valve
Controller controls the cylinder action being connected on discharge port, closes to discharge port.
4. a kind of method for controlling filling drag conveyor discharging window using ultrasonic distance measurement according to claim 1,
It is characterized by:
The supersonic generator and ultrasonic receiver are mounted on the coal wall side channel in the discharging epistome of filling drag conveyor
It helps.
5. a kind of device for applying the described in any item methods of claim 1 ~ 4, it is characterised in that:
Including hydraulic support (3), rear portion connection filling drag conveyor (6) of hydraulic support (3) is filled drag conveyor (6)
Discharge port be suspended on the lower section at hydraulic support (3) rear portion；
Ultrasonic transmitter (4) and ultrasonic receiver (5), hydraulic branch are installed below the hydraulic support (3) in discharging epistome
It is also connected on frame (3) controller (8), controller (8) connects ultrasonic transmitter (4) and ultrasonic receiver (5)；
Solenoid valve controller is also equipped at the discharge port, solenoid valve controller connects the hydraulic oil opened and closed to discharge port
Cylinder, controller connect solenoid valve controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910667579.XA CN110406951A (en) | 2019-07-23 | 2019-07-23 | A kind of method and apparatus controlling filling drag conveyor discharging window using ultrasonic distance measurement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910667579.XA CN110406951A (en) | 2019-07-23 | 2019-07-23 | A kind of method and apparatus controlling filling drag conveyor discharging window using ultrasonic distance measurement |
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| CN110406951A true CN110406951A (en) | 2019-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112644967A (en) * | 2020-12-21 | 2021-04-13 | 中国矿业大学 | Automatic filling coal mining porous bottom-discharge type conveyor and method |
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