CN105626142A - Backfilling hydraulic support and rock blocking component thereof - Google Patents
Backfilling hydraulic support and rock blocking component thereof Download PDFInfo
- Publication number
- CN105626142A CN105626142A CN201610103451.7A CN201610103451A CN105626142A CN 105626142 A CN105626142 A CN 105626142A CN 201610103451 A CN201610103451 A CN 201610103451A CN 105626142 A CN105626142 A CN 105626142A
- Authority
- CN
- China
- Prior art keywords
- sideboard
- fixed dam
- hydraulic support
- gear cash
- base plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
Abstract
The invention relates to a backfilling hydraulic support and a rock blocking component thereof.The backfilling hydraulic support comprises a base, the rock blocking component is arranged at the rear end of the base, comprises a fixed retaining plate and further comprises a movable retaining plate adjustable in up-down position relative to the fixed retaining plate and a height adjusting mechanism for adjusting height of the movable retaining plate in up-down direction, and each of the fixed retaining plate and the movable retaining plate is provided with a backward rock blocking face for blocking rock.The height of the movable retaining plate is adjusted to adjust overall height of the rock blocking component so as to adapt to different rock filling heights.
Description
Technical field
The invention belongs to the support apparatus of underground coal mine coal-face, be specifically related to a kind of backfill hydraulic support and gear cash assembly thereof.
Background technology
Hydraulic support is the equipment that face roof is supported shielding in progress of coal mining. In progress of coal mining, spoil the like waste can be produced, the bulk deposition meeting land occupation of spoil, and also soil reclamation can be polluted. Backfill hydraulic support is a kind of novel hydraulic support, and the rear suspension of the back timber of backfill hydraulic support has conveyer, and spoil is transported to goaf thus goaf is carried out filling by conveyer. Namely backfill hydraulic support has the basic function needed for the shielding of conventional hydraulic support is mined, it may have adopt spoil to fill the function in goaf. Adopt spoil to fill goaf, namely can reduce stacking and the environmental pollution of spoil, it is also possible to make full use of resource, effectively reduce or eliminate ground settlement etc.
Such as, Authorization Notice No. is CN2804388Y, and name is called that the Chinese patent of hydraulic support for filling waste rock discloses a kind of hydraulic support for filling waste rock. This hydraulic support for filling waste rock (is equivalent to filling hydraulic support) and includes base, and the rear end of base is provided with support backplate. Support backplate can protect the spoil destruction to hydraulic support of filling, but the height of support backplate is fixing, it is impossible to is highly adjusted according to different waste filling. In addition; hydraulic support for filling waste rock includes back timber and is located at the tail boom of top beam rear end; the lower end of tail boom is hung with the drag conveyor for carrying filling waste rock; the end of tail boom is provided with conveyer backplate; but; the protection domain of conveyer backplate is limited, and needs bigger service clearance when conveyer is keeped in repair, and goaf top plate falls to collapsing and can service worker be damaged. It addition, back timber is the vitals that face roof is supported, the length of back timber and intensity to meet support requirement and be accomplished by lengthening back timber, and in the restriction by mine laneway size, the back timber that length is longer is difficult to transport to down-hole.
Summary of the invention
It is an object of the invention to provide a kind of hydraulic support that backfills to solve the technical problem that support backplate highly can not be adjusted according to different waste filling. The present invention also aims to provide a kind of gear cash assembly.
The present invention keeps off the technical scheme of cash assembly: a kind of gear cash assembly, including fixed dam, gear cash assembly also includes being relatively fixed baffle plate can the sideboard of upper-lower position adjustment and have the gear cash face backwards for stopping spoil for adjusting the height-regulating mechanism of sideboard height in the vertical direction, fixed dam and sideboard.
Fixed dam includes fixed dam base plate and the fixed dam side plate turned down forward, sideboard includes sideboard base plate and the sideboard side plate turned down forward, the rear surface of fixed dam base plate and the rear surface of sideboard base plate constitute gear cash face, fixed dam and sideboard mutual sheathing, fixed dam base plate and fixed dam side plate, sideboard base plate and sideboard side plate respectively constitute the recess U-shape structure for getting out of the way rear column forward.
The front end of fixed dam side plate is provided with the fixed structure for fixing with the rear end of base.
Fixed dam is slidably matched with sideboard guiding, and described height-regulating mechanism includes the actuator for driving sideboard to move up and down.
The present invention backfills the technical scheme of hydraulic support: a kind of backfill hydraulic support, including base, it is characterized in that: the rear end of base is provided with gear cash assembly, gear cash assembly includes fixed dam, gear cash assembly also includes being relatively fixed baffle plate can the sideboard of upper-lower position adjustment and have the gear cash face backwards for stopping spoil for adjusting the height-regulating mechanism of sideboard height in the vertical direction, fixed dam and sideboard.
Fixed dam includes fixed dam base plate and the fixed dam side plate turned down forward, sideboard includes sideboard base plate and the sideboard side plate turned down forward, the rear surface of fixed dam base plate and the rear surface of sideboard base plate constitute gear cash face, fixed dam and sideboard mutual sheathing, fixed dam base plate and fixed dam side plate, sideboard base plate and sideboard side plate respectively constitute the recess U-shape structure for getting out of the way rear column forward.
The rear end of base is fixed in the front end of fixed dam side plate, and the rearward end of base is positioned at the front side in gear cash face.
Fixed dam is slidably matched with sideboard guiding, and described height-regulating mechanism includes the actuator for driving sideboard to move up and down.
Backfill hydraulic support includes back timber, and the rear end of back timber is hinged with the conveyer backplate for protecting conveyer that hinge axes extends in left-right direction, and backfill hydraulic support also includes for regulating the conveyer backplate angle adjusting mechanism towards goaf angle.
Angle adjusting mechanism be at least two length different and independent releasable connection connecting rod between back timber and conveyer backplate, or angle adjusting mechanism is the backplate actuator for driving conveyer backplate to rotate.
Usefulness of the present invention: gear cash assembly include fixed dam and be relatively fixed baffle plate can upper-lower position adjust sideboard, gear cash assembly also includes sideboard and for adjusting the height-regulating mechanism of sideboard height in the vertical direction, fixed dam and sideboard have the gear cash face backwards for stopping spoil, by the height of adjustment sideboard to regulate the whole height of gear cash assembly, thus adapting to different waste filling height.
Further, fixed dam includes fixed dam base plate and the fixed dam side plate turned down forward, sideboard includes sideboard base plate and the sideboard side plate turned down forward, the rear surface of fixed dam base plate and the rear surface of sideboard base plate constitute gear cash face, fixed dam and sideboard mutual sheathing, fixed dam base plate and fixed dam side plate, sideboard base plate and sideboard side plate respectively constitute the recess U-shape structure for getting out of the way rear column forward. Fixed dam and sideboard are recess U-shape structure forward, and the intensity of fixed dam and sideboard is high, and U-shape structure can get out of the way rear column, contribute to saving space.
Further, the rear end of base is fixed in the front end of fixed dam side plate, and the rearward end of base is positioned at the front side in gear cash face, and this makes the rearward end of base not easily be pounded by spoil and be destroyed.
Further, sideboard is slidably matched with fixed dam guiding, and described height-regulating mechanism includes the actuator for driving sideboard to move up and down, and drives sideboard to move up and down the height that just can automatically adjust sideboard by actuator, easy to adjust.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment backfilling hydraulic support in the present invention;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 1;
Fig. 4 backfills the structural representation of back timber after in the embodiment of hydraulic support in the present invention;
Fig. 5 backfills fixed dam in the embodiment of hydraulic support, assembling schematic diagram (when lifting jack does not extend out) between sideboard and lifting jack in the present invention;
Fig. 6 backfills the front view (when lifting jack does not extend out) of gear cash assembly in the embodiment of hydraulic support in the present invention;
Fig. 7 backfills the structural representation (when lifting jack stretches out) of gear cash assembly in the embodiment of hydraulic support in the present invention.
In figure: 1, base; 2, front back timber; 3, front beam section; 4, front column; 5, rear column; 6, upper connecting rod; 7, front rod; 8, back link; 9, balance jack; 10, one-level wall supporting; 11, one-level wall supporting jack; 12, secondary protecting side; 13, secondary protecting side jack; 14, fixed dam; 15, sideboard; 16, lifting jack; 17, fixed dam jointed shaft; 18, supporting plate; 19, conveyer; 20, conveyer backplate; 21, connecting rod; 22, installing hole; 23, conveyer backplate hinging pin shaft; 24, pedal; 25, rear beam section; 26, the first detachable connecting pin; 27, the second detachable connecting pin; 30, gear cash face; 31, coal mining conveyor; 32, hydraulic system; 33, coal-winning machine; 34, hole for hoist; 35, side guard plate; 36, upper hinging pin shaft; 37, lower hinging pin shaft.
Detailed description of the invention
The present invention backfills the embodiment of hydraulic support as shown in figs. 1-7. Backfill hydraulic support includes hydraulic system 32, backfill hydraulic support also includes back timber and base 1, back timber includes front back timber 2 and the rear back timber that split is arranged, front back timber 2 and rear back timber are hinged, rear back timber adopts segmental structure, and rear back timber is made up of two segmentations, two segmentations respectively front beam section 3 and rear beam section 25, being fixed by removable fixed structure between front beam section 3 and rear beam section 25, removable fixed structure includes spaced first detachable connecting pin 26 and the second detachable connecting pin 27. Removable fixed structure in the present embodiment has two kinds of usings method when transport, and the first is to be pulled down by the second detachable connecting pin 27, after the relatively front beam section 3 of rear beam section 25 is folding, front beam section 3 and rear beam section 25 entirety is transported; The second is the first detachable connecting pin 26 and the second detachable connecting pin 27 all to be pulled down, and front beam section 3 and rear beam section 25 are separately transported. The left and right sides of front beam section 3 and rear beam section 25 is equipped with side guard plate. Each side guard plate is Split type structure, it is to avoid rear back timber adopts all-in-one-piece side guard plate, and the length longer positioning precision caused is inadequate, not card phenomenon occurs, and each side guard plate can separately control, and the telescopicing performance making side guard plate is better. Rear back timber adopts segmental structure, contributes to increasing the length of back timber, and the space making backfill hydraulic support is sufficient, it is simple to configure various pipeline parts and mechanical coal mining equipment. And, the backfill spoil space of backfill hydraulic support is bigger, it is possible to process more spoil rubbish.
The rear end of back timber is provided with the supporting plate 18 mounted for conveyer 19, and supporting plate 18 and back timber are slidably matched in the longitudinal direction. The rear end of back timber is hinged with the conveyer backplate 20 for protecting conveyer 19 that hinge axes extends in left-right direction, and backfill hydraulic support also includes for regulating the conveyer backplate 20 angle adjusting mechanism towards goaf angle. Angle adjusting mechanism be at least two length different and independent releasable connection connecting rod 21 between back timber and conveyer backplate 20, can regulating the conveyer backplate 20 angle towards goaf by changing the connecting rod 21 of different length, angle adjusting mechanism is simple and convenient. Conveyer backplate 20 is when vertical direction, and conveyer backplate 20 is better to the protective effect of conveyer 19; When conveyer backplate 20 is in the position turned in opposed vertical direction, conveyer backplate 20 also can effectively prevent goaf top plate from falling the injury of service worker caved in maintenance conveyer. Conveyer backplate 20 is the rear end being articulated with back timber by conveyer backplate hinging pin shaft 27, back timber is provided with hole for hoist 34, the aperture of hole for hoist 34 is more than the installing hole 22 installed for conveyer backplate hinging pin shaft 27, hole for hoist 34 is connected with installing hole 22, and hole for hoist 34 uses when lifting back timber.
The front column 4 for supporting front back timber 2 it is arranged at intervals with along the longitudinal direction and for the rear column 5 of back timber after supporting between back timber and base 1, the quantity of front column 4 has two, two front column 4 intervals in left-right direction are arranged, the quantity of rear column 5 has two, two rear column 5 intervals in left-right direction are arranged, the upper end of front column 4 supports with front back timber 2 phase and coordinates, the lower end of front column 4 is connected with base 1, rear beam section 25 is provided with for supporting, with rear column 5, the support fit structure coordinated, the upper end of rear column 5 supports with rear beam section 25 phase and coordinates, the lower end of rear column 5 is connected with base 1. backfill hydraulic support also includes connecting rod 6, front rod 7, back link 8 and balance jack 9, the upper end thereof of upper connecting rod 6 is on front back timber 2, the lower end of front rod 7 and back link 8 is all articulated with on base 1, the upper end of front rod 7 and back link 8 is all articulated with on connecting rod 6, upper connecting rod 6, front rod 7, back link 8 and base 1 constitute quadric chain, one end of balance jack 9 is articulated with on front back timber 2, and the other end of balance jack 9 is articulated with on connecting rod 6. the front end of front back timber 2 is provided with one-level wall supporting 10 and one-level wall supporting jack 11, the rear end of one-level wall supporting 10 is articulated with front back timber 2 front end, the forward and backward two ends of one-level wall supporting jack 11 are hinged with one-level wall supporting 10 and front back timber 2 respectively, the front end of one-level wall supporting 10 is provided with secondary protecting side 12 and secondary protecting side jack 13, the rear end of secondary protecting side 12 is articulated with the front end of one-level wall supporting 10, and the forward and backward two ends of secondary protecting side jack 13 are hinged with secondary protecting side 12 and one-level wall supporting 10 respectively. base 1 is provided with pedal 24.
The rear end of base 1 is provided with gear cash assembly, gear cash assembly includes fixed dam 14, gear cash assembly also include being relatively fixed baffle plate 14 can upper-lower position adjustment sideboard 15 and for adjusting the height-regulating mechanism of sideboard 15 height in the vertical direction, fixed dam 14 and sideboard 15 have the gear cash face 30 backwards for blocking spoil. Fixed dam 14 includes fixed dam base plate and the fixed dam side plate turned down forward, sideboard 15 includes sideboard base plate and the sideboard side plate turned down forward, the rear surface of fixed dam base plate and the rear surface of sideboard base plate constitute gear cash face 30, fixed dam 14 and sideboard 15 mutual sheathing, fixed dam base plate and fixed dam side plate, sideboard base plate and sideboard side plate respectively constitute the recess U-shape structure for getting out of the way rear column 5 forward. The rear end of base 1 is fixed in the front end of fixed dam side plate. Fixed dam 14 and sideboard 15 are recess U-shape structure forward, and the intensity of fixed dam 14 and sideboard 15 is high, and fixed dam side plate is also convenient for the connection between fixed dam 14 and base 1. Fixed dam 14 is fixed on the rear end of base 1 by two fixed dam jointed shafts 17. The rearward end of base 1 is positioned at the front side in gear cash face 30, and this makes the rearward end of base 1 not easily be pounded by spoil and be destroyed. Rear column 5 is positioned at the U-shaped recess of fixed dam 14 and sideboard 15, so contributes to saving space. Fixed dam 14 is slidably matched with sideboard 15 guiding, described height-regulating mechanism includes the actuator for driving sideboard to move up and down, actuator is lifting jack 16, lifting jack 16 has two, two lifting jack 16 intervals in left-right direction are arranged, the upper end of lifting jack 16 is hinged with sideboard 15 by upper hinging pin shaft 36, and the lower end of lifting jack 16 is hinged with fixed dam 14 by lower hinging pin shaft 37. When backfilling spoil, lifting jack 16 protrudes upward to drive sideboard 15 to move upward, and the stop of spoil is avoided spoil burying backfill hydraulic support by gear cash face 30; Can regulate, according to practical situation, the height that lifting jack 16 protrudes upward simultaneously, the namely lifting height scalable of sideboard 15, is suitable for the different packed heights of backfill spoil, compact conformation, being effectively increased the accumulating amount of spoil, the subject range of backfill hydraulic support is broader. Gear cash assembly caves in the destruction backfilling hydraulic support additionally, can also protect goaf top plate whereabouts.
In Fig. 1, label 33 is coal-winning machine, and label 31 is coal mining conveyor, and label 19 is conveyer, and coal-winning machine 33, coal mining conveyor 31 and conveyer 19 etc. are and backfill the matching used equipment of hydraulic support, is not belonging to the ingredient of backfill hydraulic support.
The present invention backfill in other embodiments of hydraulic support, fixed dam 14 is interval with multiple first installing hole along the vertical direction, sideboard 15 is provided with second installing hole corresponding with the first installing hole, connecting bolt is arranged in the first installing hole and the second installing hole, adjusts the sideboard 15 height at above-below direction by adjusting the first installing hole matched with the second installing hole. Connecting bolt can also be replaced by bearing pin.
Backfilling in the present invention in other embodiments of hydraulic support, actuator is alternatively linear electric motors, electric pushrod, it is also possible to by motor and drive mechanism with the use of realizing moving up and down of sideboard 15.
Backfilling in other embodiments of hydraulic support in the present invention, front back timber and rear back timber are alternatively integral structure.
The present invention backfill in other embodiments of hydraulic support, removable fixed structure is alternatively bolt, front beam section 2 is provided with front connecting portion, and rear beam section 25 is provided with rear connecting portion, is fixed by the bolt front beam section 3 of realization and rear beam section 25 being arranged in front connecting portion and rear connecting portion.
The present invention backfill in other embodiments of hydraulic support, being fixed by folding fixed structure between front beam section 3 and rear beam section 25, folding fixed structure includes the first hinging pin shaft being threaded onto in front beam section 3 and rear beam section 25 in left-right direction and the removable fixture realizing fixing front beam section 3 and rear beam section 25 with the first hinging pin shaft by coordinating. Removable fixture can be the second hinging pin shaft being threaded onto front beam section 3 and rear beam section 25. Removable fixture is alternatively the first connecting bolt, and front beam section 3 and rear beam section 25 are respectively equipped with the first connecting portion and the second connecting portion, realizes fixing between front beam section 3 and rear beam section 25 by being arranged in the first connecting bolt of the first connecting portion and the second connecting portion.
The present invention backfill in other embodiments of hydraulic support, rear back timber adopts segmental structure, rear back timber is by two sections of composition described above, being fixed by removable fixed structure or folding fixed structure between adjacent two segmentations, folding fixed structure includes the first hinging pin shaft being threaded onto in adjacent two segmentations in left-right direction and the removable fixture realizing fixing described adjacent two segmentations with the first hinging pin shaft by coordinating.
The present invention backfill in other embodiments of hydraulic support, front back timber adopts segmental structure, being fixed by removable fixed structure or folding fixed structure between adjacent two segmentations, folding fixed structure includes the first hinging pin shaft being threaded onto in adjacent two segmentations in left-right direction and the removable fixture realizing fixing described adjacent two segmentations with the first hinging pin shaft by coordinating.
Backfilling in the present invention in other embodiments of hydraulic support, the quantity of front column and rear column is not limited to two, sets according to practical situation.
The present invention backfill in other embodiments of hydraulic support, angle adjusting mechanism is alternatively the backplate actuator for driving conveyer backplate to rotate, backplate actuator is jack, jack one end and the back timber other end that is hinged is hinged with conveyer backplate, just can be automatically adjusted the conveyer backplate angle towards goaf by jack. Backplate actuator is alternatively the motor driving conveyer backplate to rotate.
The present invention keeps off the structure of gear cash assembly in the embodiment of cash assembly identical with the structure of gear cash assembly in the embodiment of backfill hydraulic support, no longer repeat at this.
Claims (10)
1. a gear cash assembly, including fixed dam, gear cash assembly also includes being relatively fixed baffle plate can the sideboard of upper-lower position adjustment and have the gear cash face backwards for stopping spoil for adjusting the height-regulating mechanism of sideboard height in the vertical direction, fixed dam and sideboard.
2. gear cash assembly according to claim 1, it is characterized in that: fixed dam includes fixed dam base plate and the fixed dam side plate turned down forward, sideboard includes sideboard base plate and the sideboard side plate turned down forward, the rear surface of fixed dam base plate and the rear surface of sideboard base plate constitute gear cash face, fixed dam and sideboard mutual sheathing, fixed dam base plate and fixed dam side plate, sideboard base plate and sideboard side plate respectively constitute the recess U-shape structure for getting out of the way rear column forward.
3. gear cash assembly according to claim 2, it is characterised in that: the front end of fixed dam side plate is provided with the fixed structure for fixing with the rear end of base.
4. gear cash assembly according to claim 2, it is characterised in that: fixed dam is slidably matched with sideboard guiding, and described height-regulating mechanism includes the actuator for driving sideboard to move up and down.
5. a backfill hydraulic support, including base, it is characterized in that: the rear end of base is provided with gear cash assembly, gear cash assembly includes fixed dam, gear cash assembly also includes being relatively fixed baffle plate can the sideboard of upper-lower position adjustment and have the gear cash face backwards for stopping spoil for adjusting the height-regulating mechanism of sideboard height in the vertical direction, fixed dam and sideboard.
6. backfill hydraulic support according to claim 5, it is characterized in that: fixed dam includes fixed dam base plate and the fixed dam side plate turned down forward, sideboard includes sideboard base plate and the sideboard side plate turned down forward, the rear surface of fixed dam base plate and the rear surface of sideboard base plate constitute gear cash face, fixed dam and sideboard mutual sheathing, fixed dam base plate and fixed dam side plate, sideboard base plate and sideboard side plate respectively constitute the recess U-shape structure for getting out of the way rear column forward.
7. backfill hydraulic support according to claim 6, it is characterised in that: the rear end of base is fixed in the front end of fixed dam side plate, and the rearward end of base is positioned at the front side in gear cash face.
8. backfill hydraulic support according to claim 6, it is characterised in that: fixed dam is slidably matched with sideboard guiding, and described height-regulating mechanism includes the actuator for driving sideboard to move up and down.
9. backfill hydraulic support according to claim 5; it is characterized in that: backfill hydraulic support also includes back timber; the rear end of back timber is hinged with the conveyer backplate for protecting conveyer that hinge axes extends in left-right direction, and backfill hydraulic support also includes for regulating the conveyer backplate angle adjusting mechanism towards goaf angle.
10. backfill hydraulic support according to claim 9, it is characterized in that: angle adjusting mechanism be at least two length different and independent releasable connection connecting rod between back timber and conveyer backplate, or angle adjusting mechanism is the backplate actuator for driving conveyer backplate to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610103451.7A CN105626142A (en) | 2016-02-25 | 2016-02-25 | Backfilling hydraulic support and rock blocking component thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610103451.7A CN105626142A (en) | 2016-02-25 | 2016-02-25 | Backfilling hydraulic support and rock blocking component thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105626142A true CN105626142A (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610103451.7A Pending CN105626142A (en) | 2016-02-25 | 2016-02-25 | Backfilling hydraulic support and rock blocking component thereof |
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| Country | Link |
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| CN (1) | CN105626142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561167A (en) * | 2018-03-16 | 2018-09-21 | 新汶矿业集团有限责任公司华丰煤矿 | A kind of hydraulic pressure automatic catch cash card |
| CN110406951A (en) * | 2019-07-23 | 2019-11-05 | 华电郑州机械设计研究院有限公司 | A kind of method and apparatus controlling filling drag conveyor discharging window using ultrasonic distance measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561167A (en) * | 2018-03-16 | 2018-09-21 | 新汶矿业集团有限责任公司华丰煤矿 | A kind of hydraulic pressure automatic catch cash card |
| CN110406951A (en) * | 2019-07-23 | 2019-11-05 | 华电郑州机械设计研究院有限公司 | A kind of method and apparatus controlling filling drag conveyor discharging window using ultrasonic distance measurement |
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Application publication date: 20160601 |
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