CN114684757B - Lifting device for coal mining and use method - Google Patents
Lifting device for coal mining and use method Download PDFInfo
- Publication number
- CN114684757B CN114684757B CN202210289247.4A CN202210289247A CN114684757B CN 114684757 B CN114684757 B CN 114684757B CN 202210289247 A CN202210289247 A CN 202210289247A CN 114684757 B CN114684757 B CN 114684757B
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- China
- Prior art keywords
- plate
- sliding
- rod
- lifting
- fixed
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/042—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations actuated by lazy-tongs mechanisms or articulated levers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
Abstract
The utility model provides a lifting device and application method for coal mining, the coal mining field can solve the problem that above-mentioned background art provided, and the height of mine tunnel is different, and the workman is more laborious when the coal seam exploitation to the mine tunnel top, needs the workman to look up, lifts the mining instrument simultaneously and operates, wastes time and energy and the problem that the coal stone that drops injures the workman easily. The device can be adjusted to enable the device to be always in a horizontal position, so that the phenomenon that the use of the device is affected by the inclination or the rugged surface of a mine hole is avoided, and the stability of the device is improved. Meanwhile, the device can simultaneously operate two working surfaces with different heights, and the working efficiency is improved. The method comprises the following steps: step one: the electric telescopic rod is electrified, so that the angle of the groove rod can be adjusted; step two: the angle of the support plate can be adjusted by adjusting the angle of the grooved rod; step three: the hydraulic rod is extended, so that the height of the lifting plate can be controlled; step four: the sliding block is controlled to move, and the positions of the two lifting devices can be adjusted.
Description
Technical Field
The invention belongs to the field of coal mining, and particularly relates to a lifting device for coal mining and a use method thereof.
Background
Most underground coal seams are mined in coal mines, the coal mine needs to be mined underground, tunnels after coal is dug are called mine holes, the heights of the mine holes are different, workers are laborious when mining the coal seams at the tops of the mine holes, workers are required to look up, mining tools are lifted for operation, time and effort are wasted, and falling coal stones easily smash the workers.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a lifting device for coal mine exploitation and a use method thereof.
The invention adopts the following technical scheme:
the utility model provides a hoisting device for coal mining which characterized in that: comprising the following steps: the lifting device is arranged in two, and the lifting devices are symmetrically arranged.
A method of using a lifting device for coal mining, the method comprising the steps of:
step one: the electric telescopic rod is electrified, so that the angle of the groove rod can be adjusted;
step two: the angle of the support plate can be adjusted by adjusting the angle of the grooved rod;
step three: the hydraulic rod is extended, so that the height of the lifting plate can be controlled;
step four: the sliding block is controlled to move, and the positions of the two lifting devices can be adjusted.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a lifting device for coal mining, which can solve the problems of the background technology, namely that the heights of mine holes are different, workers are laborious to mine coal beds at the tops of the mine holes, the workers are required to look up, and meanwhile, the mining tools are lifted for operation, so that the problems of time and effort are wasted, and the workers are easily injured by dropped coal stones are solved. The device can be adjusted to enable the device to be always in a horizontal position, so that the phenomenon that the use of the device is affected by the inclination or the rugged surface of a mine hole is avoided, and the stability of the device is improved. Meanwhile, the device can simultaneously operate two working surfaces with different heights, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a sliding plate structure;
FIG. 3 is a schematic view of a lifting device;
FIG. 4 is a front view of a slide;
fig. 5 is a schematic diagram of the operation of the lifting device in a split manner.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are all within the protection scope of the present invention.
A lifting device for coal mining, comprising: the device comprises a moving device 1, an adjusting device 2 and lifting devices 3, wherein the adjusting device 2 is fixed at the lower end of the moving device 1, the lifting devices 3 are in sliding connection with the moving device 1, the number of the lifting devices 3 is two, and the two lifting devices 3 are symmetrically arranged.
The mobile device 1 includes: the support plate 1-1, the spring telescopic rod 1-2, the universal wheels 1-3 and the sliding plate 1-4, wherein the spring telescopic rod 1-2 is fixed at the numerical value of the lower end of the support plate 1-1, the universal wheels 1-3 are rotated at the lower end of the spring telescopic rod 1-2, the number of the spring telescopic rod 1-2 and the number of the universal wheels 1-3 are multiple, the sliding plate 1-4 is horizontally fixed at the upper end of the support plate 1-1, and a plurality of sliding plate holes 1-5 are uniformly distributed on the sliding plate 1-4 along the length direction of the sliding plate.
The adjusting device 2 comprises: support column 2-1, articulated slab 2-2, electric telescopic handle 2-3 and fixing device 2-4, support column 2-1 is vertically fixed with to support column 1-1 lower extreme, support column 2-1 lower extreme level is fixed with articulated slab 2-2, electric telescopic handle 2-3 stiff end is connected with support column 1-1, fixing device 2-4 is connected with articulated slab 2-2 rotation, electric telescopic handle 2-3 expansion end and fixing device 2-4 sliding connection, electric telescopic handle 2-3 and fixing device 2-4 all set up two, two electric telescopic handle 2-3 symmetry sets up, two fixing device 2-4 symmetry sets up.
Both of said fixtures 2-4 comprise: the electric telescopic rod comprises a groove rod 2-4-1 and a fixed disc 2-4-2, wherein one end of the groove rod 2-4-1 is rotationally connected with a hinged plate 2-2, the other end of the groove rod 2-4-1 is rotationally connected with the fixed disc 2-4-2, and the movable end of the electric telescopic rod 2-3 is slidingly connected with the groove rod 2-4-1. A level bar is arranged on the hinged plate 2-2.
Both of the lifting devices 3 include: the sliding device 3-1 and the lifting device 3-2, the sliding device 3-1 is connected with the sliding plate 1-4 in a sliding way, the lifting device 3-2 is fixed at the upper end of the sliding device 3-1, and the sliding device 3-1 comprises: the sliding block comprises a sliding block 3-1-1, a guide wheel 3-1-2, a jacking column 3-1-3, a baffle plate 3-1-4 and a spring I3-1-5, wherein a square hole is formed in the sliding block 3-1-1 along the width direction of the sliding block, the sliding plate 1-4 slides in the square hole, the guide wheel 3-1-2 is rotated at the lower end of the sliding block 3-1-1, the guide wheel 3-1-2 abuts against the top surface of the supporting plate 1-1, the guide wheels 3-1-2 are multiple, the jacking column 3-1-3 slides through the top surface of the sliding block 3-1-1, the baffle plate 3-1-4 is arranged on the jacking column 3-1-3, the spring I3-1-5 is sleeved on the baffle plate 3-1-4, the spring I3-1-5 is arranged between the baffle plate 3-1-4 and the sliding block 3-1-1, and the jacking column 3-3 and the sliding plate hole 1-5 are matched.
The lifting device 3-2 includes: connecting plate 3-2-1, linkage post 3-2-2, hydraulic rod 3-2-3, lifter plate 3-2-4, spout 3-2-5 and support telescopic column 3-2-6, slider 3-1-1 upper end level is fixed with connecting plate 3-2-1, linkage post 3-2-2 one end and connecting plate 3-2-1 rotate to be connected, hydraulic rod 3-2-3 stiff end and connecting plate 3-2-1 rotate to be connected, hydraulic rod 3-2-3 expansion end and linkage post 3-2-2 rotate to be connected, lifter plate 3-2-4 lower extreme is provided with spout 3-2-5, the other end slip spout 3-2-5 of linkage post 3-2, support telescopic column 3-2-6 is fixed between connecting plate 3-2-1 and lifter plate 3-2-4, support telescopic column 3-2-6 sets up to be a plurality of.
The lifting device further comprises: the stopper 4 and limiting plate 5, stopper 4 and one of them elevating gear 3 fixed connection, limiting plate 5 and one of them elevating gear 3 fixed connection, stopper 4 includes: guide pillar 4-1, spring two 4-2 and spacer pin 4-3, guide pillar 4-1 and connecting plate 3-2-1 fixed connection, guide pillar 4-1 suit is equipped with spring two 4-2, spacer pin 4-3 slides and penetrates guide pillar 4-1, spring two 4-2 is located spacer pin 4-3 top, spacer plate 5 level and connecting plate 3-2-1 fixed connection, spacer plate 5 sets up two, two spacer plate 5 symmetry sets up, two all be provided with the rubber pad on the spacer plate 5 opposite face.
A method of using a lifting device for coal mining, the method comprising the steps of:
step one: the electric telescopic rod 2-3 is electrified, so that the angle of the groove rod 2-4-1 can be adjusted;
step two: the angle of the support plate 1-1 can be adjusted by adjusting the angle of the grooved bars 2-4-1;
step three: the hydraulic rod 3-2-3 is extended, so that the height of the lifting plate 3-2-4 can be controlled;
step four: the control slide block 3-1-1 moves to adjust the positions of the two lifting devices 3.
The working principle of the invention is as follows:
the device is pushed to move in a mine hole through the universal wheels 1-3, and the spring telescopic rod 1-2 can effectively absorb vibration caused by road jolt and prevent the joint of the device from loosening or damaging due to the vibration; when the floor is inclined, the electric telescopic rod 2-3 can be electrified and stretched to drive the groove rod 2-4-1 to rotate by taking the hinged plate 2-2 as the circle center, the groove rod 2-4-1 rotates to drive the fixed disc 2-4-2 to move downwards to be close to the floor, the supporting plate 1-1 can be moved to change the angle through the limit action of the floor and the groove rod 2-4-1 continues to rotate until the level ruler arranged on the hinged plate 2-2 is in the horizontal position, at the moment, the supporting plate 1-1 is in the horizontal position and can perform the next operation, the fixed disc 2-4-2 can increase the stability, the hydraulic rods 3-2-3 arranged by the two lifting devices 3-2 can be stretched to drive the linkage columns 3-2-2 to rotate, the linkage columns 3-2-2 move upwards along the sliding grooves 3-2-5, and simultaneously drive the lifting plates 3-2-4 to move to drive the supporting telescopic columns 3-2-6, the supporting plates 3-2-6 to move upwards along with the lifting plates 3-2-4, and the lifting plates can move upwards along with the lifting plates 3-4 to perform the lifting operation along with the lifting plates 3-4, and the lifting plates can be adjusted to move along with the lifting plates 3-4 to the lifting plates 2-4; the limiting pin 4-3 is normally inserted into the other connecting plate 3-2-1, the limiting pin 4-3 is connected with the two lifting devices 3-2, so that the two lifting devices 3-2 move synchronously, when the height of a mine hole is different, the limiting pin 4-3 is pulled to move along the guide post 4-1 to be separated from the other connecting plate 3-2-1, meanwhile, the spring II 4-2 is compressed, the spring II 4-2 plays a role in resetting, at the moment, the jack post 3-1-3 is pulled upwards to be separated from the sliding plate hole 1-5, meanwhile, the spring I3-1-5 is compressed through the baffle plate 3-1-4, the spring I3-1-5 plays a role in resetting, at the moment, the connecting plate 3-2-1 is pushed to drive the sliding block 3-1-1 to slide along the sliding plate 1-4, the position of the connecting plate 3-2-1 can be adjusted according to the height of the mine hole, after the position is adjusted, the jack-prop 3-1-3 is loosened, the jack-prop is reset under the action of the shrinkage spring 3-1-5 and is clamped into the sliding plate hole 1-5 for fixing, the jack-prop 3-1-3 is controlled to be respectively inserted into different sliding plate holes 1-5, the positions of the two fixing devices 2-4 can be adjusted, then the lifting of one lifting device 3-2 can be independently controlled by respectively controlling the hydraulic rod 3-2-3, two working surfaces with different heights can be simultaneously operated, the guide wheel 3-1-2 plays the role of assisting in moving to reduce friction force, when the steps are reversely operated, the two lifting devices 3 are reset, the limiting pin 4-3 plays a role in connecting the two lifting devices 3, and the limiting plate 5 plays a role in protecting, so that one lifting device 3 can be prevented from suddenly rising or falling, and a worker is prevented from falling and being injured. The rubber pad that limiting plate 5 set up plays the cushioning effect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides a hoisting device for coal mining which characterized in that: comprising the following steps: remove device (1), adjusting device (2) and elevating gear (3), remove device (1) lower extreme is fixed with adjusting device (2), elevating gear (3) and mobile device (1) sliding connection, elevating gear (3) set up to two, two elevating gear (3) symmetry sets up, adjusting device (2) include: support column (2-1), articulated slab (2-2), electric telescopic rod (2-3) and fixing device (2-4), support column (2-1) are vertically fixed with to support column (1-1) lower extreme, support column (2-1) lower extreme level is fixed with articulated slab (2-2), electric telescopic rod (2-3) stiff end is connected with support plate (1-1), fixing device (2-4) are connected with articulated slab (2-2) rotation, electric telescopic rod (2-3) expansion end and fixing device (2-4) sliding connection, electric telescopic rod (2-3) and fixing device (2-4) all set up two electric telescopic rod (2-3) symmetry sets up, two fixing device (2-4) symmetry sets up.
2. A lifting device for coal mining according to claim 1, wherein: the mobile device (1) comprises: backup pad (1-1), spring telescopic link (1-2) and universal wheel (1-3), sliding plate (1-4), backup pad (1-1) lower extreme numerical value is fixed with spring telescopic link (1-2), spring telescopic link (1-2) lower extreme rotates has universal wheel (1-3), spring telescopic link (1-2) all set up to a plurality ofly with universal wheel (1-3), backup pad (1-1) upper end level is fixed with sliding plate (1-4), sliding plate (1-4) are provided with a plurality of sliding plate holes (1-5) along its length direction equipartition.
3. A lifting device for coal mining according to claim 2, wherein: both of said fixing means (2-4) comprise: the electric telescopic device comprises a groove rod (2-4-1) and a fixed disc (2-4-2), wherein one end of the groove rod (2-4-1) is rotationally connected with a hinged plate (2-2), the other end of the groove rod (2-4-1) is rotationally connected with the fixed disc (2-4-2), and the movable end of the electric telescopic rod (2-3) is slidably connected with the groove rod (2-4-1).
4. A lifting device for coal mining according to claim 2, wherein: both lifting devices (3) comprise: the sliding device (3-1) and lifting device (3-2), sliding device (3-1) and sliding plate (1-4) sliding connection, sliding device (3-1) upper end is fixed with lifting device (3-2), sliding device (3-1) include: the sliding block comprises a sliding block (3-1-1), a guide wheel (3-1-2), a jack-prop (3-1-3), a baffle plate (3-1-4) and a first spring (3-1-5), wherein a square hole is formed in the sliding block (3-1-1) along the width direction of the sliding block, the sliding plate (1-4) slides in the square hole, the guide wheel (3-1-2) is arranged at the lower end of the sliding block (3-1-1) in a rotating mode, the guide wheel (3-1-2) abuts against the top surface of the supporting plate (1-1), the guide wheel (3-1-2) is multiple, the jack-prop (3-1-3) slides through the top surface of the sliding block (3-1-1), the baffle plate (3-1-4) is arranged on the jack-prop (3), the first spring (3-1-5) is sleeved on the baffle plate (3-1-4), and the first spring (3-1-5) is arranged between the baffle plate (3-1-4) and the sliding block (3-1-1) and the jack-prop (3-1).
5. The lifting device for coal mining according to claim 4, wherein: the lifting device (3-2) comprises: connecting plate (3-2-1), linkage post (3-2-2), hydraulic rod (3-2-3), lifter plate (3-2-4), spout (3-2-5) and support telescopic column (3-2-6), connecting plate (3-2-1) are fixed with to slider (3-1-1) upper end level, linkage post (3-2-2) one end and connecting plate (3-2-1) rotate to be connected, hydraulic rod (3-2-3) stiff end and connecting plate (3-2-1) rotate to be connected, hydraulic rod (3-2-3) expansion end and linkage post (3-2-2) rotate to be connected, lifter plate (3-2-4) lower extreme is provided with spout (3-2-5), in sliding spout (3-2-5) of linkage post (3-2-2) other end, support telescopic column (3-2-6) are fixed between connecting plate (3-2-1) and lifter plate (3-2-4), support telescopic column (3-2-6) are many.
6. A lifting device for coal mining according to claim 1, wherein: the lifting device further comprises: stopper (4) and limiting plate (5), stopper (4) and one of them elevating gear (3) fixed connection, limiting plate (5) and one of them elevating gear (3) fixed connection, stopper (4) include: guide pillar (4-1), spring two (4-2) and spacer pin (4-3), guide pillar (4-1) and connecting plate (3-2-1) fixed connection, guide pillar (4-1) cover is equipped with spring two (4-2), spacer pin (4-3) slip penetrates guide pillar (4-1), spring two (4-2) are located spacer pin (4-3) top, spacer plate (5) level and connecting plate (3-2-1) fixed connection, spacer plate (5) set up two, two spacer plate (5) symmetry sets up, two all be provided with the rubber pad on spacer plate (5) opposite face.
7. A method of using the lifting device for coal mining according to claim 6, wherein: the method comprises the following steps:
step one: the electric telescopic rod (2-3) is electrified, so that the angle of the groove rod (2-4-1) can be adjusted;
step two: the angle of the groove rod (2-4-1) can be adjusted, and the angle of the supporting plate (1-1) can be adjusted;
step three: the hydraulic rod (3-2-3) is extended, so that the height of the lifting plate (3-2-4) can be controlled;
step four: the control slide block (3-1-1) moves, and the positions of the two lifting devices (3) can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289247.4A CN114684757B (en) | 2022-03-22 | 2022-03-22 | Lifting device for coal mining and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289247.4A CN114684757B (en) | 2022-03-22 | 2022-03-22 | Lifting device for coal mining and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114684757A CN114684757A (en) | 2022-07-01 |
| CN114684757B true CN114684757B (en) | 2023-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210289247.4A Active CN114684757B (en) | 2022-03-22 | 2022-03-22 | Lifting device for coal mining and use method |
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| Country | Link |
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| CN (1) | CN114684757B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4202796A (en) * | 1995-01-16 | 1996-07-25 | Dennis Frederick Linton | Jack end fitting |
| KR20010084785A (en) * | 2000-02-29 | 2001-09-06 | 김동환 | angle requlation apparatus of subcar guide rail |
| CN204532273U (en) * | 2015-04-07 | 2015-08-05 | 山西煤炭进出口集团左云长春兴煤业有限公司 | A kind of main shaft increases device-specific accessory |
| CN105307969A (en) * | 2013-06-27 | 2016-02-03 | 格哈特·芬克贝纳 | Lifting apparatus for lifting and lowering vehicles, loads or the like |
| CN207192688U (en) * | 2017-09-18 | 2018-04-06 | 沈阳农业大学 | A kind of high-altitude orchard operation assistance platform |
| CN210858773U (en) * | 2019-11-25 | 2020-06-26 | 龙向宏 | Safety supporting mechanism for coal mine machinery |
| JP2021008360A (en) * | 2019-06-28 | 2021-01-28 | 胡金霞 | Reversing device used for machining large steel frame structure |
| CN212476029U (en) * | 2020-05-06 | 2021-02-05 | 海宁市现代化工有限公司 | Lift convenient to adjust |
| CN213574146U (en) * | 2020-12-04 | 2021-06-29 | 霍光生 | Temporary support hydraulic support for coal mining and tunneling face |
| CN214218088U (en) * | 2020-12-04 | 2021-09-17 | 王磊 | Hydraulic lifting platform for fully mechanized coal mining face of coal mine |
| CN113880017A (en) * | 2021-09-29 | 2022-01-04 | 重庆三峡学院 | Big data supervisory equipment's maintenance adjusting device of being convenient for |
| CN113979386A (en) * | 2021-10-28 | 2022-01-28 | 中国煤炭科工集团太原研究院有限公司 | Section bar lifting device |
-
2022
- 2022-03-22 CN CN202210289247.4A patent/CN114684757B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4202796A (en) * | 1995-01-16 | 1996-07-25 | Dennis Frederick Linton | Jack end fitting |
| KR20010084785A (en) * | 2000-02-29 | 2001-09-06 | 김동환 | angle requlation apparatus of subcar guide rail |
| CN105307969A (en) * | 2013-06-27 | 2016-02-03 | 格哈特·芬克贝纳 | Lifting apparatus for lifting and lowering vehicles, loads or the like |
| CN204532273U (en) * | 2015-04-07 | 2015-08-05 | 山西煤炭进出口集团左云长春兴煤业有限公司 | A kind of main shaft increases device-specific accessory |
| CN207192688U (en) * | 2017-09-18 | 2018-04-06 | 沈阳农业大学 | A kind of high-altitude orchard operation assistance platform |
| JP2021008360A (en) * | 2019-06-28 | 2021-01-28 | 胡金霞 | Reversing device used for machining large steel frame structure |
| CN210858773U (en) * | 2019-11-25 | 2020-06-26 | 龙向宏 | Safety supporting mechanism for coal mine machinery |
| CN212476029U (en) * | 2020-05-06 | 2021-02-05 | 海宁市现代化工有限公司 | Lift convenient to adjust |
| CN213574146U (en) * | 2020-12-04 | 2021-06-29 | 霍光生 | Temporary support hydraulic support for coal mining and tunneling face |
| CN214218088U (en) * | 2020-12-04 | 2021-09-17 | 王磊 | Hydraulic lifting platform for fully mechanized coal mining face of coal mine |
| CN113880017A (en) * | 2021-09-29 | 2022-01-04 | 重庆三峡学院 | Big data supervisory equipment's maintenance adjusting device of being convenient for |
| CN113979386A (en) * | 2021-10-28 | 2022-01-28 | 中国煤炭科工集团太原研究院有限公司 | Section bar lifting device |
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| Publication number | Publication date |
|---|---|
| CN114684757A (en) | 2022-07-01 |
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