CN112502762A - Supporting device for coal mining and using method thereof - Google Patents
Supporting device for coal mining and using method thereof Download PDFInfo
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- CN112502762A CN112502762A CN202011394946.2A CN202011394946A CN112502762A CN 112502762 A CN112502762 A CN 112502762A CN 202011394946 A CN202011394946 A CN 202011394946A CN 112502762 A CN112502762 A CN 112502762A
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- 239000003245 coal Substances 0.000 title claims abstract description 27
- 238000005065 mining Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000009415 formwork Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000000670 limiting effect Effects 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 244000309464 bull Species 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/08—Advancing mechanisms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a supporting device for coal mining, which comprises a base, wherein a trapezoidal frame is assembled at the top end of the base, a cache reminding mechanism is connected to the top end of the trapezoidal frame through a screw, a storage battery is assembled at the top end of the base, a hydraulic oil cylinder is connected to the center of the bottom end of the trapezoidal frame through a screw, the bottom end of the hydraulic oil cylinder extends into an inner cavity of the base and is connected with a first rectangular plate through a screw, four corners of the bottom end of the inner cavity of the base are respectively assembled with one end of a guide rod, and the other end of the guide rod extends out of the upper surface of the first rectangular plate and is. This strutting arrangement for coal mining can make things convenient for the staff to transport and rotate, has alleviateed staff's intensity of labour, is favorable to using, reminds the pressure that the mechanism can cushion the support in-process through the buffer memory, when pressing and moving too big or take place the state that sinks, makes T shape post and touch sensor contact to the siren sends out the police dispatch newspaper and proposes the staff, has improved the security when using.
Description
Technical Field
The invention relates to the technical field of coal mining equipment, in particular to a supporting device for coal mining and a using method thereof.
Background
The coal mine is a region where people mine coal resources in a coal-rich mining area, and is generally divided into a mineworker coal mine and an open pit coal mine, when a coal bed is far away from the ground surface, coal is generally selected to dig a tunnel to the underground, and is the mineworker coal mine, the coal is the most main solid fuel, is one kind of combustible organic rock, is formed by gradually piling up a heavy layer of luxuriant plants growing in a certain geological age in a proper geological environment, is buried in water bottom or silt, and is subjected to natural coalification action in a long geological age, and the coal mine is mined without a support;
current bearing structure adopts posture fixed knot to construct, because self weight is too big to be easily moved in the tunnel, more inconvenient staff is to transporting and rotating, is unfavorable for the use, simultaneously in the use, when appearing collapsing or when pressure is too big, can not in time report to the police, has reduced the security when using.
Disclosure of Invention
The invention aims to provide a supporting device for coal mining and a using method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a supporting device for coal mining comprises a base, wherein a trapezoidal frame is assembled at the top end of the base, a cache reminding mechanism is connected with the top end of the trapezoidal frame through a screw, a storage battery is assembled at the top end of the base, a hydraulic oil cylinder is connected with the bottom center of the trapezoidal frame through a screw, the hydraulic oil cylinder is electrically connected with the storage battery through a wire, a first rectangular plate is connected with the bottom end of the hydraulic oil cylinder extending into an inner cavity of the base through a screw, one end of a guide rod is assembled at four corners of the bottom end of the inner cavity of the base, the other end of the guide rod extends out of the upper surface of a first rectangular plate and is welded with the top end of the inner cavity of the base, a sliding groove is formed in the right center of the first rectangular plate in the front-back direction, a part of a sliding block is inserted into the inner cavity of the, the middle parts of the top ends of the front side and the rear side of the base are respectively provided with a strip-shaped hole along the up-down direction, the front end and the rear end of the right side of the top end of the first rectangular plate are respectively connected with an L-shaped rod in a shaft mode, one end of the L-shaped rod extends out of an inner cavity of the rectangular hole in a shaft mode and is connected with a first wheel in a shaft mode, the other end of the L-shaped rod is connected with one end of a connecting rod in a shaft mode, the other end of the two connecting rods is respectively connected with the front side and the rear side of the top end of the rack in a shaft mode, the front side and the rear side of the middle part of the top end of the first rectangular plate are respectively provided with a second rectangular plate, the inner bottom end of the second rectangular plate is respectively in interference fit with an outer ring of a bearing, the inner ring of the bearing is in interference fit with a worm meshed with the rack, the front side and the rear side of the, the other end of bull stick extends the front and back both sides surface of base and the slope is equipped with the push rod, the top left side of first rectangular plate is equipped with circular pole, the both ends of circular pole extend respectively rather than the inner chamber in the bar hole that corresponds and the coupling has the second wheel, the left and right sides bottom of base all is equipped with the third rectangular plate, the equal spiro union in both sides has the bolt around the top of third rectangular plate.
Preferably, the inner cavity of the sliding groove is in a dovetail groove shape, and the sliding block is in adaptive insertion connection with the sliding groove.
Preferably, the distance between the front side and the rear side of the L-shaped rod extending out of the base is 10 CM.
Preferably, the transmission ratio of the first gear to the second gear is 3: 1.
A construction method of a supporting device for coal mining comprises the following steps:
starting a storage battery, and switching on a hydraulic pump power supply of a hydraulic oil cylinder to enable the hydraulic oil cylinder to be started to push a first rectangular plate to move downwards;
step (2), the first rectangular plate drives the circular rod, the second wheel, the L-shaped rod and the first wheel to horizontally move downwards under the limiting action of the guide rod, so that the base can be supported, and the device can be moved;
step (3), when the device needs to be rotated, the push rod can be pushed upwards or pressed downwards, the rotating rod can be rotated anticlockwise or clockwise, so that the second gear can be driven to rotate anticlockwise or clockwise, the worm can be rotated clockwise or anticlockwise due to the fact that the first gear is meshed with the second gear, and the rack can be horizontally moved backwards or forwards under the matching effect of the sliding groove and the sliding block;
step (4), when the rack moves, one ends of the two connecting rods can be respectively pushed and pulled to move along with the rack, and the other ends of the two connecting rods can push and pull the L-shaped rod, so that the two first wheels can swing leftwards or rightwards simultaneously, and the device can be conveniently rotated by a worker;
step (5), the shear wall formwork support can be supported through the supporting plate, the driving rod is pressed by the supporting plate to enable the T-shaped column to move in the second sliding groove to extrude the spring, when the pressing is too large or the collapse state occurs, the T-shaped column is enabled to be in contact with the touch sensor along with the downward movement of the supporting plate, and therefore the alarm gives an alarm to a worker, and the safety during use is improved.
The invention has the beneficial effects that:
1. the hydraulic pump power supply of the hydraulic oil cylinder is started, the first rectangular plate can drive the second wheels and the first wheels to move downwards to support the base, the device can move by pushing the push rod, the rack can horizontally move backwards or forwards when the push rod is moved upwards or downwards through the matching of the rotating rod, the second gear, the first gear, the worm, the rack, the sliding chute and the sliding block, and the first wheels can swing left and right through the matching of the rack, the connecting rod and the L-shaped rod, so that the device can be rotated;
2. the buffer reminding mechanism can buffer the pressure in the supporting process, and when the pressure is too large or the pressure is in a collapse state, the T-shaped column is enabled to be in contact with the touch sensor, so that the alarm gives an alarm to work personnel, and the safety in use is improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a front cross-sectional view of a base of the present invention;
FIG. 3 is a top cross-sectional view of the base of the present invention;
FIG. 4 is an enlarged view of the invention at A;
fig. 5 is a schematic structural diagram of a cache reminding mechanism according to the present invention.
In the figure: 1. the base, 2, trapezoidal frame, 3, buffer memory warning mechanism, 31, supporting baseplate, 32, T-shaped column, 33, touch sensor, 34, driving rod, 35, supporting plate, 36, support, 37, spring, 38, alarm, 39, sliding chute two, 4, storage battery, 5, hydraulic cylinder, 6, first rectangular plate, 7, guide rod, 8, sliding chute, 9, slider, 10, rack, 11, rectangular hole, 12, bar-shaped hole, 13, L-shaped rod, 14, first wheel, 15, connecting rod, 16, second rectangular plate, 17, worm, 18, first gear, 19, rotating rod, 20, second gear, 21, push rod, 22, circular rod, 23, second wheel, 24, third rectangular plate, 25, bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a supporting device for coal mining and a using method thereof comprise a base 1, wherein the top end of the base 1 is provided with a trapezoidal frame 2, the top end of the trapezoidal frame 2 is connected with a cache reminding mechanism 3 through a screw, the top end of the base 1 is provided with a storage battery 4, the bottom center position of the trapezoidal frame 2 is connected with a hydraulic oil cylinder 5 through a screw, the model of the hydraulic oil cylinder 5 is CLL-50-50, the hydraulic oil cylinder 5 can be controlled to start through the storage battery 4, the hydraulic oil cylinder 5 is electrically connected with the storage battery 4 through a conducting wire, the bottom end of the hydraulic oil cylinder 5 extends into an inner cavity of the base 1 and is connected with a first rectangular plate 6 through a screw, four corners of the bottom end of an inner cavity of the base 1 are all provided with one end of a guide rod 7, the other end of the guide rod 7 extends out of the upper surface of the first rectangular plate 6 and is welded with the top end of the inner, the inner cavity of the sliding chute 8 is inserted with one part of the sliding block 9, the other part of the sliding block 9 is assembled with a rack 10, rectangular holes 11 are respectively arranged in the middle parts of the left end and the right end of the front side and the rear side of the base 1, the rectangular holes 11 can enable the L-shaped rods 13 to have enough swing space, strip-shaped holes 12 are respectively arranged in the middle parts of the top ends of the front side and the rear side of the base 1 along the up-down direction, the rotating rod 20 can be ensured to move up and down along with the first rectangular plate 6, the front end and the rear end of the right side of the top end of the first rectangular plate 6 are respectively connected with the L-shaped rods 13 in a shaft mode, one end of each L-shaped rod 13, extending out of the rectangular hole 11, is connected with a first wheel 14 in a shaft mode, the other end of each L-shaped rod 13 is connected with one end of each connecting rod 15, the other ends of the two connecting rods 15 are respectively, therefore, two first wheels 14 can swing leftwards or rightwards simultaneously, the front side and the rear side of the middle part of the top end of the first rectangular plate 6 are respectively provided with a second rectangular plate 16, the bottom end of the inner side of the second rectangular plate 16 is respectively provided with an outer ring of a bearing in interference fit, the inner ring of the bearing is respectively provided with a worm 17 meshed with the rack 10 in interference fit, when the worm 17 rotates clockwise or anticlockwise, the rack 10 can horizontally move backwards or forwards, the front side and the rear side of the outer wall of the worm 17 are respectively connected with a first gear 18 in a key way, the top end of the inner side of the second rectangular plate 16 is respectively provided with an outer ring of a bearing in interference fit, the inner rings of the two bearings are respectively provided with a rotating rod 19 in interference fit, one end of the rotating rod 19 is connected with a second gear 20 meshed with the first gear 18, because the first gear 18 is meshed with the second gear 20, when the rotating rod 19 rotates clockwise or anticlockwise, the first gear, the other end of bull stick 19 extends base 1's front and back both sides surface and slope and is equipped with push rod 21, upwards promote push rod 21 and can make bull stick 19 anticlockwise rotation, it can make bull stick 19 clockwise rotation to press down push rod 21, the top left side of first rectangular plate 6 is equipped with round bar 22, the both ends of round bar 22 extend respectively rather than the inner chamber and the hub connection of corresponding bar hole 12 have second wheel 23, base 1's the left and right sides bottom all is equipped with third rectangular plate 24, the equal spiro union in both sides has bolt 25 around the top of third rectangular plate 24, accessible rotates bolt 25 makes third rectangular plate 24 and base 1 fixed subaerial again.
Furthermore, the buffer reminding mechanism 3 comprises a supporting bottom plate 31, a T-shaped column 32, a touch sensor 33, a driving rod 34, a supporting plate 35, a support 36, a spring 37, an alarm 38 and a second sliding groove 39;
Furthermore, the shape of the inner cavity of the sliding groove 8 is dovetail groove-shaped, and the sliding block 9 is inserted in the sliding groove 8 in a matched mode, so that the sliding block 9 can be prevented from being separated from the inner cavity of the sliding groove 8, and the moving stability of the rack 10 is improved.
Preferably, the L-shaped rod 13 extends out of the base 1 by a distance of 10CM from the front and rear sides, so that the first wheel 14 can have a sufficient space for swinging left and right.
Furthermore, the transmission ratio of the first gear 18 to the second gear 20 is 3:1, and the push rod 21 can be prevented from being moved by a worker greatly through the transmission ratio of the first gear 18 to the second gear 20, so that the use is more convenient.
A construction method of a supporting device for coal mining comprises the following steps:
step (1), starting a storage battery 4, connecting a hydraulic pump power supply of a hydraulic oil cylinder 5, and enabling the hydraulic oil cylinder 5 to be started to push a first rectangular plate 6 to move downwards;
step (2), the first rectangular plate 6 drives the circular rod 22, the second wheel 23, the L-shaped rod 13 and the first wheel 14 to move horizontally downwards under the limiting action of the guide rod 7, so that the base 1 can be supported, and the device can be moved;
step (3), when the device needs to be rotated, the push rod 21 can be pushed upwards or pressed downwards, the rotating rod 19 can be rotated anticlockwise or clockwise, and therefore the second gear 20 can be driven to rotate anticlockwise or clockwise, the worm 17 can be rotated clockwise or anticlockwise due to the fact that the first gear 18 is meshed with the second gear 20, and the rack 10 can be horizontally moved backwards or forwards under the matching effect of the sliding groove 8 and the sliding block 9;
step (4), when the rack 10 moves, one end of each of the two connecting rods 15 can be pushed and pulled to move along with the rack 10, and the other end of each of the two connecting rods 15 pushes and pulls the L-shaped rod 13, so that the two first wheels 14 can swing leftwards or rightwards at the same time, and a worker can conveniently rotate the device;
and (5) supporting the shear wall formwork support through the supporting plate 35, pressing the driving rod 34 by the supporting plate 35 to enable the T-shaped column 32 to move in the second sliding groove 39 to extrude the spring 37, and when the pressing is too large or the collapse state occurs, enabling the T-shaped column 32 to be in contact with the touch sensor 33 along with downward movement of the supporting plate 35, so that the alarm 38 gives an alarm to a worker, and the safety in use is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a supporting device for coal mining, includes base (1), its characterized in that: the top end of the base (1) is provided with a trapezoid frame (2), the top end of the trapezoid frame (2) is in screwed connection with a cache reminding mechanism (3), the top end of the base (1) is provided with a storage battery (4), the bottom center of the trapezoid frame (2) is in screwed connection with a hydraulic oil cylinder (5), the hydraulic oil cylinder (5) is electrically connected with the storage battery (4) through a lead, the bottom end of the hydraulic oil cylinder (5) extends into the inner cavity of the base (1) and is in screwed connection with a first rectangular plate (6), four corners of the bottom end of the inner cavity of the base (1) are respectively provided with one end of a guide rod (7), the other end of the guide rod (7) extends out of the upper surface of the first rectangular plate (6) and is welded with the top end of the inner cavity of the base (1), the right center of the first rectangular plate (6) is provided with a sliding groove (8) in the front-back direction, and, the other part of the sliding block (9) is provided with a rack (10), the middle parts of the left end and the right end of the front side and the rear side of the base (1) are respectively provided with a rectangular hole (11), the middle parts of the top ends of the front side and the rear side of the base (1) are respectively provided with a strip-shaped hole (12) along the up-down direction, the front end and the rear end of the right side of the top end of the first rectangular plate (6) are respectively connected with an L-shaped rod (13) in a shaft way, one end of the L-shaped rod (13) extends out of the rectangular hole (11) and is connected with a first wheel (14) in a shaft way, the other end of the L-shaped rod (13) is connected with one end of a connecting rod (15) in a shaft way, the other ends of the two connecting rods (15) are respectively connected with the front side and the rear side of the top end of the rack (10) in, and the inner ring interference fit of the bearing has a worm (17) engaged with the rack (10), the front and rear sides of the outer wall of the worm (17) are all keyed with a first gear (18), the inner top end of the second rectangular plate (16) is all interference fit with the outer ring of the bearing, the inner rings of the two bearings are all interference fit with a rotating rod (19), one end of the rotating rod (19) is coupled with a second gear (20) engaged with the first gear (18), the other end of the rotating rod (19) extends out of the front and rear side surfaces of the base (1) and is obliquely assembled with a push rod (21), the left side of the top end of the first rectangular plate (6) is assembled with a circular rod (22), the two ends of the circular rod (22) respectively extend out of the inner cavity of the strip-shaped hole (12) corresponding to the circular rod and are coupled with a second wheel (23), the bottom ends of the left and right sides of the base (1) are all assembled with third rectangular plates, bolts (25) are screwed on the front side and the rear side of the top end of the third rectangular plate (24).
2. A coal mining support device as defined in claim 1, wherein: the buffer reminding mechanism (3) comprises a supporting bottom plate (31), a T-shaped column (32), a touch sensor (33), a driving rod (34), a supporting plate (35), a support (36), a spring (37), an alarm (38) and a second sliding groove (39);
the top center position of supporting baseplate (31) is equipped with support (36), the top both sides of support (36) all are equipped with the one end of backup pad (35) through the round pin axle, spout two (39) have all been seted up to the upper surface left and right sides of supporting baseplate (31), the one end of T shape post (32) is inlayed to inner chamber one side of spout two (39), the top of T shape post (32) is equipped with the one end of actuating lever (34) through the round pin axle, the other end of actuating lever (34) is connected with backup pad (35) through the round pin axle, the inner chamber opposite side of spout two (39) is equipped with touch sensor (33), touch sensor (33) are connected with battery (4), the other end of T shape post (32) is equipped with the one end of spring (37), the other end of spring (37) and the inner wall connection of spout two (39), the left and right sides of supporting baseplate (31) all are equipped with siren (38), the alarm (38) is connected to the battery (4) and the touch sensor (33), respectively.
3. A coal mining support device as defined in claim 1, wherein: the inner cavity of the sliding groove (8) is in a dovetail groove shape, and the sliding block (9) is connected with the sliding groove (8) in an inserting mode in a matching mode.
4. A coal mining support device as defined in claim 1, wherein: the distance between the L-shaped rod (13) and the front side and the rear side of the base (1) is 10 CM.
5. A coal mining support device as defined in claim 1, wherein: the transmission ratio of the first gear (18) to the second gear (20) is 3: 1.
6. A method of constructing a coal mining support device as claimed in any one of claims 1 to 5, wherein: the method comprises the following steps:
step (1), starting a storage battery (4), switching on a hydraulic pump power supply of a hydraulic oil cylinder (5), and enabling the hydraulic oil cylinder (5) to be started to push a first rectangular plate (6) to move downwards;
step (2), the first rectangular plate (6) drives the circular rod (22), the second wheel (23), the L-shaped rod (13) and the first wheel (14) to horizontally move downwards under the limiting action of the guide rod (7), so that the base (1) can be supported, and the device can be moved;
step (3), when the device needs to be rotated, the push rod (21) can be pushed upwards or pressed downwards, the rotating rod (19) can be rotated anticlockwise or clockwise, so that the second gear (20) can be driven to rotate anticlockwise or clockwise, the worm (17) can be rotated clockwise or anticlockwise due to the fact that the first gear (18) is meshed with the second gear (20), and the rack (10) can be horizontally moved backwards or forwards under the matching effect of the sliding groove (8) and the sliding block (9);
step (4), when the rack (10) moves, one end of each of the two connecting rods (15) can be pushed and pulled to move along with the rack (10) respectively, and the other end of each of the two connecting rods (15) pushes and pulls the L-shaped rod (13), so that the two first wheels (14) can swing leftwards or rightwards simultaneously, and workers can rotate the device conveniently;
step (5), the shear wall formwork support can be supported through the support plate (35), meanwhile, the support plate (35) presses the driving rod (34) to enable the T-shaped column (32) to move in the second sliding groove (39) to extrude the spring (37), when the pressing is too large or the collapse state occurs, the support plate (35) moves downwards to enable the T-shaped column (32) to be in contact with the touch sensor (33), and therefore the alarm (38) gives an alarm to provide for workers, and the safety in use is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011394946.2A CN112502762A (en) | 2020-12-03 | 2020-12-03 | Supporting device for coal mining and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011394946.2A CN112502762A (en) | 2020-12-03 | 2020-12-03 | Supporting device for coal mining and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112502762A true CN112502762A (en) | 2021-03-16 |
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ID=74969445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011394946.2A Pending CN112502762A (en) | 2020-12-03 | 2020-12-03 | Supporting device for coal mining and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112502762A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376945A (en) * | 2020-11-12 | 2021-02-19 | 浙江毕姆项目管理有限公司 | Shear wall formwork supporting structure and construction method |
| CN113611231A (en) * | 2021-08-13 | 2021-11-05 | 山东交通学院 | A guide device for park |
-
2020
- 2020-12-03 CN CN202011394946.2A patent/CN112502762A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376945A (en) * | 2020-11-12 | 2021-02-19 | 浙江毕姆项目管理有限公司 | Shear wall formwork supporting structure and construction method |
| CN113611231A (en) * | 2021-08-13 | 2021-11-05 | 山东交通学院 | A guide device for park |
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Application publication date: 20210316 |