CN117386426A - Transition support for steep coal face - Google Patents
Transition support for steep coal face Download PDFInfo
- Publication number
- CN117386426A CN117386426A CN202311576105.7A CN202311576105A CN117386426A CN 117386426 A CN117386426 A CN 117386426A CN 202311576105 A CN202311576105 A CN 202311576105A CN 117386426 A CN117386426 A CN 117386426A
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- base
- adjusting frame
- shield
- driving
- side plate
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- 230000007704 transition Effects 0.000 title claims abstract description 48
- 239000003245 coal Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 description 7
- 230000002222 downregulating effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
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
- E21D23/04—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
- E21D23/04—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
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
-
- 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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- 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)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a transition support for a steep coal face, which comprises the following components: the device comprises a base, a top beam, a shield beam, a connecting rod assembly and a first driving assembly; the first driving component is connected to the base, and the output end of the first driving component is connected with the top beam and is used for driving the top beam to lift relative to the base; the shield beam is hinged with the top beam, and two ends of the connecting rod assembly are respectively hinged with the shield beam and the base; the two sides of the base are respectively provided with a left side plate and a right side plate, and the right side plate is provided with an upper adjusting frame beam and a lower adjusting frame beam which are arranged in parallel with the base and extend along the width direction of the base; the base is provided with a second driving assembly, and the second driving assembly is used for driving the upper adjusting frame beam and the lower adjusting frame beam to move along the width direction of the base so that the upper adjusting frame beam and the lower adjusting frame beam are propped against the roadway support bracket; the right telescopic beam is arranged on one side of the top beam, which is close to the right side plate, a right telescopic oil cylinder is arranged in the top beam, and the output end of the right telescopic oil cylinder is connected with the right telescopic beam and is used for driving the right telescopic Liang Chaoji roadway support bracket to extend in the direction, so that the width of the top beam is expanded.
Description
Technical Field
The invention relates to the technical field of coal mining equipment, in particular to a transition support for a steep coal mining face.
Background
The span of the outlet support under the fully mechanized mining face of the steeply inclined coal seam is large, the mine pressure is large, and the mine pressure is strong. Because the production equipment of the lower outlet of the working face is centralized, the production equipment is an important throat for personnel, ventilation, coal and materials to enter and exit the working face, and the loose rings of the surrounding rocks of the machine lane break the integrity of the top plate at the lower outlet, so that the top plate at the lower outlet is more broken, the lower outlet of the coal face is always the key point and the difficult point of the management of the coal face.
Besides the commonalities, the steep coal face has the following characteristics: all hydraulic supports of the working face are in large-angle lateral lying, the upper half part of the transition hydraulic support enters a machine lane, and the top beam invades a top plate of a lower outlet machine lane; the hydraulic support of the working face is extremely unstable, and the hydraulic support can slide downwards and topple over when being slightly careless; the upper adjacent frame can also have a great tendency to push force to act on the lower adjacent frame, so that the stability of the hydraulic support is poorer; the working face transition hydraulic support is a first support of the working face, and the stability of the support is poorer due to the lack of anti-tilting support provided by the adjacent frame side guard plates below.
The existing steeply inclined fully mechanized coal mining in China only has a very small amount of use under specific coal seam occurrence conditions, and most steeply inclined coal seam mines have no suitable fully mechanized coal mining equipment, so that the production and construction of the mines are stopped, and the breakthrough of fully mechanized coal mining equipment technology is required to be waited. Very few working surfaces are being mined or ever mined, and the following methods and measures are generally adopted to prevent the transition hydraulic support from sliding down and falling down: 1. the hydraulic supports of the machine head are mutually connected together through the oil cylinders to realize combined anti-falling and anti-skid; 2. the front beam of the lower end hydraulic support is directed to the working surface, and the front beam of the lower end hydraulic support is propped against the lower side guard plate of the transition hydraulic support to realize fall prevention; 3. an anti-falling and anti-skid jack is additionally arranged, and an oil cylinder and a round-link chain are used for pulling a base of the upper hydraulic support to prevent falling and skid. The above methods, measures and means have significant drawbacks and limitations, such as: 1. the hydraulic supports of the machine head are combined together, and as long as the working posture of one hydraulic support is incorrect, the supports are mutually blocked and cannot act; 2. the lower outlet top plate is generally broken and has high height, so that the top beam of the lower end hydraulic support is difficult to ensure that the top beam can well prop against the side guard plate of the transition hydraulic support, and once the top beam does not prop against the side guard plate, the transition hydraulic support immediately has the functions of extruding, biting, tilting and spreading to a working surface; 3. when the worker operates in error, such as excessive falling or lifting, the transition hydraulic support is directly caused to fall or bite; 4. the anti-fall anti-skid jack not only occupies the head pedestrian space of the working face, but also is extremely easy to cause casualties once the chain is broken. The research on the complete technical equipment for mining the intrinsically safe steep seam and the filling of the technical blank in the world are urgent.
Disclosure of Invention
The invention aims to solve the technical problems that: the transition support is free from sliding down and falling down when the high-inclination coal face is used, and can reliably support the adjacent hydraulic support above.
The technical scheme of the invention is that a transition support for a steep coal face is provided, which has the following structure:
the device comprises a base, a top beam, a shield beam, a connecting rod assembly and a first driving assembly; the first driving component is connected to the base, and the output end of the first driving component is connected with the top beam and is used for driving the top beam to lift relative to the base; the shield beam is hinged with the top beam, and two ends of the connecting rod assembly are respectively hinged with the shield beam and the base;
the two sides of the base are respectively provided with a left side plate and a right side plate which extend along the height direction of the base, and the right side plate is provided with an upper adjusting frame beam and a lower adjusting frame beam which are arranged in parallel with the base and extend along the width direction of the base; the base is provided with a second driving assembly, and the second driving assembly is used for driving the upper adjusting frame beam and the lower adjusting frame beam to move along the width direction of the base so that the upper adjusting frame beam and the lower adjusting frame beam are propped against the roadway support bracket;
the right telescopic beam is arranged on one side, close to the right side plate, of the top beam, a right telescopic oil cylinder is arranged in the top beam, and the output end of the right telescopic oil cylinder is connected with the right telescopic beam and used for driving the right telescopic Liang Chaoji roadway support bracket to extend in the direction of the right telescopic support bracket so as to expand the width of the top beam.
After adopting the structure, the transition support for the steep coal face has the following advantages compared with the prior art:
the working face transition support and the machine lane support are spaced at a certain distance, and the second driving assembly drives the upper adjusting frame beam and the lower adjusting frame beam to move, so that the upper adjusting frame beam and the lower adjusting frame beam can be propped against the machine lane support below. The base of the working face transition support is supported on the working face coal seam bottom plate and bears the force in the normal direction, the upper adjusting frame beam and the lower adjusting frame beam on the right side plate are supported on the support plate of the machine lane support, and can be regarded as a second base bearing the force in the inclined direction, and the two bases are mutually perpendicular and in an L shape.
The component force of the dead weight of the working face transition support in the normal direction and the pressure of the top beam in the normal direction vertically act on the working face coal seam bottom plate through the base 1; the component force of the dead weight of the transition support of the working face in the inclined direction is added with the force along the inclined direction transmitted by the adjacent hydraulic support above, and the upward adjusting support beam and the downward adjusting support beam (namely the second base) on the right side plate act on the support plate of the machine lane support. Because the machine roadway support bracket is directly placed on the machine roadway rock base plate and the lower end hydraulic support is used for providing stability protection, the machine roadway support bracket can be regarded as a stable supporting plane like the ground, and the working face transition bracket has a firm second base, so that the working face transition bracket is ensured not to slide downwards, topple over and have correct working posture.
The working posture of the working face transition support always ensures the best working posture, and the working face transition support has enough strength and rigidity in structural design, so that the working face transition support also has the condition of serving as a second base of an adjacent hydraulic support above, and finally, the hydraulic support of the full working face is basically not slipped down or toppled over.
In the aspect of roof support, the working condition of steeply inclined coal seam exploitation determines that the working posture of a working face hydraulic support is in a large-angle side horizontal type, the upper half part of a working face transition support inevitably enters a lower outlet machine lane, and a top beam invades a lower outlet machine lane top plate.
Preferably, the second driving assembly comprises an up-regulating frame oil cylinder and a down-regulating frame oil cylinder, wherein the output end of the up-regulating frame oil cylinder is connected with the up-regulating frame beam, and the output end of the down-regulating frame oil cylinder is connected with the down-regulating frame beam. The upper adjusting frame beam and the lower adjusting frame beam are respectively driven by the upper adjusting frame oil cylinder and the lower adjusting frame oil cylinder, so that the working posture of the working face transition bracket can be adjusted; if the angle of the working face coal bed changes, the angle of the supporting plate is adjusted through the supporting oil cylinder of the supporting bracket of the manipulator lane so as to adapt to the change of the working face coal bed angle.
Preferably, the base is provided with a connecting frame, two ends of the connecting frame are respectively connected with the corresponding left side plate and right side plate, and the base, the left side plate, the right side plate and the connecting frame are integrally formed. Therefore, the overall supporting strength of the base can be increased, and deformation of the left side plate or the right side plate caused by overlarge force in the direction of inclination is avoided.
Preferably, a set of opposite through holes are formed in the two side plates, and a passage for a worker to pass through is formed between the two through holes. The setting can avoid too high curb plate to block the workman to pass through like this, can also set up the cat ladder in the passageway, makes things convenient for the workman to scramble.
Preferably, a front telescopic beam is arranged at one end of the top beam, far away from the shield beam, a front telescopic cylinder is connected to the top beam, and the output end of the front telescopic cylinder is connected with the front telescopic beam and used for driving the front telescopic beam to extend towards the direction, far away from the shield beam, so that the length of the top beam is expanded.
Preferably, shielding plates are arranged on two sides of the shielding beam, a side pushing oil cylinder is arranged in the shielding beam, and the output end of the side pushing oil cylinder is connected with the shielding plate and used for driving the shielding plates to move along the width direction of the shielding beam. Therefore, the width of the shield beam can be expanded to two sides, gaps among the supports are plugged, and the situation of gangue leakage among the supports is avoided.
Preferably, the connecting rod assembly comprises a front connecting rod and a rear connecting rod, one ends of the front connecting rod and the rear connecting rod are hinged with the base, and the other ends of the front connecting rod and the rear connecting rod are hinged with the shield beam.
Preferably, the first driving assembly comprises four jacking cylinders, wherein the jacking cylinders are connected to the base, and the output ends of the jacking cylinders are connected with the top beam and used for driving the top beam to lift. Four jacking cylinders are uniformly distributed on the base, so that the top beam can be driven to lift more stably.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the present invention in the bottom view.
Fig. 3 is a semi-sectional view of the present invention.
Reference numerals illustrate:
1. the device comprises a base, 10, a left side plate, 11, a right side plate, 111, through holes, 12, an up-adjusting frame beam, 13, a down-adjusting frame beam, 14, an up-adjusting frame oil cylinder, 15, an up-adjusting frame oil cylinder, 16, a connecting frame, 2, a top beam, 20, a right telescopic beam, 21, a front telescopic beam, 22, a front telescopic oil cylinder, 23, a right telescopic oil cylinder, 3, a shield beam, 31, a shield plate, 32, a side pushing oil cylinder, 4, a connecting rod assembly, 41, a front connecting rod, 42, a rear connecting rod, 5 and a first driving assembly.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention, while the terms "first", "second", etc. are merely names for distinguishing the respective components, and have no major and minor relationships, and thus should not be construed as limiting the present invention.
As shown in fig. 1, 2 and 3;
the invention discloses a transition support for a steep coal face, which comprises the following parts: the device comprises a base 1, a top beam 2, a shield beam 3, a connecting rod assembly 4 and a first driving assembly 5, wherein the whole base 1 is asymmetric, and is of an lengthened frame structure facing the machine lane direction.
The first driving component 5 is connected to the base 1, and the output end of the first driving component is connected with the top beam 2 and is used for driving the top beam 2 to lift relative to the base 1; the shield beam 3 is hinged with the top beam 2, and two ends of the connecting rod assembly 4 are respectively hinged with the shield beam 3 and the base 1.
The two sides of the base 1 are respectively provided with a left side plate 10 and a right side plate 11 which extend along the height direction of the base 1, and the right side plate 11 is provided with an upper adjusting frame beam 12 and a lower adjusting frame beam 13 which are arranged in parallel with the base 1 and extend along the width direction of the base 1; the base 1 is provided with a second driving component, and the second driving component is used for driving the upper adjusting frame beam 12 and the lower adjusting frame beam 13 to move along the width direction of the base 1, so that the upper adjusting frame beam 12 and the lower adjusting frame beam 13 are propped against the roadway support bracket.
A right telescopic beam 20 is arranged on one side of the top beam 2, which is close to the right side plate 11, a right telescopic oil cylinder 23 is arranged in the top beam 2, and the output end of the right telescopic oil cylinder 23 is connected with the right telescopic beam 20 and is used for driving the right telescopic beam 20 to extend towards the roadway support bracket so as to expand the width of the top beam 2.
The working face transition support and the roadway support are spaced at a certain distance, and the second driving assembly drives the upper adjusting frame beam 12 and the lower adjusting frame beam 13 to move, so that the upper adjusting frame beam 12 and the lower adjusting frame beam 13 can be abutted against the roadway support below. The base of the working face transition support is supported on the working face coal seam bottom plate and bears the force in the normal direction, the upper adjusting frame beam 12 and the lower adjusting frame beam 13 on the right side plate 11 are supported on the support plate of the machine lane support, and can be regarded as a second base bearing the force in the inclined direction, and the two bases are mutually perpendicular and in an L shape.
The component force of the dead weight of the working face transition support in the normal direction and the pressure of the top beam 2 in the normal direction vertically act on the bottom plate of the working face coal seam through the base 1; the component force of the dead weight of the working face transition support in the inclined direction and the force along the inclined direction transmitted by the adjacent hydraulic support above are acted on the support plate of the roadway support through the upper adjusting frame beam 12 and the lower adjusting frame beam 13 (namely the second base) on the right side plate 11. Because the machine roadway support bracket is directly placed on the machine roadway rock base plate and the lower end hydraulic support is used for providing stability protection, the machine roadway support bracket can be regarded as a stable supporting plane like the ground, and the working face transition bracket has a firm second base, so that the working face transition bracket is ensured not to slide downwards, topple over and have correct working posture.
The working posture of the working face transition support always ensures the best working posture, and the working face transition support has enough strength and rigidity in structural design, so that the working face transition support also has the condition of serving as a second base of the upper adjacent working face hydraulic support, and finally, the hydraulic support of the full working face is essentially not slid down and essentially not fallen down.
In the aspect of roof support, the working condition of steeply inclined coal seam exploitation determines that the working posture of a working face hydraulic support is in a large-angle side horizontal type, the upper half part of a working face transition support inevitably enters a lower outlet machine lane, and a top beam invades a lower outlet machine lane top plate, so that a right telescopic beam 20 facing the machine lane direction is additionally arranged on the working face transition support top beam 2 and is used for supporting the top plate at the interface of the lower outlet machine lane and the machine lane so as to prevent roof coal from falling.
The second driving assembly comprises an up-regulating frame oil cylinder 14 and a down-regulating frame oil cylinder 15, wherein the output end of the up-regulating frame oil cylinder 14 is connected with the up-regulating frame beam 12, and the output end of the down-regulating frame oil cylinder 15 is connected with the down-regulating frame beam 13. The upper adjusting frame beam 12 and the lower adjusting frame beam 13 are respectively driven by the upper adjusting frame oil cylinder 14 and the lower adjusting frame oil cylinder 15, so that the working posture of the working face transition bracket can be adjusted; if the angle of the working face coal bed changes, the angle of the supporting plate is adjusted through the supporting oil cylinder of the supporting bracket of the manipulator lane so as to adapt to the change of the working face coal bed angle.
When the working face transition support is designed, the structural strength and rigidity and the thrust of the upper adjusting frame oil cylinder 14 and the lower adjusting frame oil cylinder 15 are fully considered, so that the working face transition support can be ensured to basically not slide down and to basically not incline.
The base 1 is provided with a connecting frame 16, two ends of the connecting frame 16 are respectively connected with the corresponding left side plate 10 and right side plate 11, and the base 1, the left side plate 10, the right side plate 11 and the connecting frame 16 are integrally formed. In this way, the deformation of the left side plate 10 or the right side plate 11 caused by the overlarge force in the inclined direction is avoided, and meanwhile, the integral structural strength of the base 1 can be ensured to the greatest extent due to the integral forming of the base 1, the connecting frame 16 and the two side plates 11.
A group of opposite through holes 111 are formed in the two side plates 11, a channel for workers to pass through is formed between the two through holes 111, the too high side plates 11 can be prevented from blocking the workers to pass through, and a ladder stand can be arranged in the channel, so that the workers can climb conveniently.
The end of the top beam 2, which is far away from the shield beam 3, is provided with a front telescopic beam 21, the top beam 2 is connected with a front telescopic cylinder 22, and the output end of the front telescopic cylinder 22 is connected with the front telescopic beam 21 and is used for driving the front telescopic beam 21 to extend towards the direction far away from the shield beam 3 so as to expand the length of the top beam 2.
The two sides of the shield beam 3 are provided with a shield plate 31, a side pushing oil cylinder 32 is arranged in the shield beam 3, and the output end of the side pushing oil cylinder 32 is connected with the shield plate 31 and used for driving the shield plate 31 to move along the width direction of the shield beam 3. Therefore, the width of the shield beam 3 can be expanded to two sides, gaps among the supports are plugged, and the condition of waste rock leakage among the supports is avoided.
The link assembly 4 includes a front link 41 and a rear link 42, one end of each of the front link 41 and the rear link 42 is hinged to the base 1, and the other end of each of the front link 41 and the rear link 42 is hinged to the shield beam 3.
The first driving assembly 5 comprises four jacking cylinders, wherein the jacking cylinders are connected to the base 1, and the output ends of the jacking cylinders are connected with the top beam 2 and used for driving the top beam 2 to lift. Four jacking cylinders are uniformly distributed on the base 1, so that the top beam 2 can be driven to lift more stably.
The foregoing is merely illustrative of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that may be easily contemplated by those skilled in the art within the scope of the present invention should be included within the scope of the present invention, and the scope of the present invention shall be defined by the appended claims.
Claims (8)
1. A transition support for a steep coal face comprises a base (1), a top beam (2), a shield beam (3), a connecting rod assembly (4) and a first driving assembly (5); the first driving component (5) is connected to the base (1), and the output end of the first driving component is connected with the top beam (2) and is used for driving the top beam (2) to lift relative to the base (1); the shield beam (3) is hinged with the top beam (2), and two ends of the connecting rod assembly (4) are respectively hinged with the shield beam (3) and the base (1);
the method is characterized in that: the two sides of the base (1) are respectively provided with a left side plate (10) and a right side plate (11) which extend along the height direction of the base (1), and the right side plate (11) is provided with an upper adjusting frame beam (12) and a lower adjusting frame beam (13) which are arranged in parallel with the base (1) and extend along the width direction of the base (1); the base (1) is provided with a second driving assembly, and the second driving assembly is used for driving the upper adjusting frame beam (12) and the lower adjusting frame beam (13) to move along the width direction of the base (1) so that the upper adjusting frame beam (12) and the lower adjusting frame beam (13) are propped against a roadway support bracket;
the right telescopic beam (20) is arranged on one side, close to the right side plate (11), of the top beam (2), a right telescopic oil cylinder (23) is arranged in the top beam (2), and the output end of the right telescopic oil cylinder (23) is connected with the right telescopic beam (20) and used for driving the right telescopic beam (20) to extend towards the direction of a roadway support bracket so as to expand the width of the top beam (2).
2. A transition support for a high-rise coal face as claimed in claim 1, wherein: the second driving assembly comprises an upper adjusting frame oil cylinder (14) and a lower adjusting frame oil cylinder (15), wherein the output end of the upper adjusting frame oil cylinder (14) is connected with the upper adjusting frame beam (12), and the output end of the lower adjusting frame oil cylinder (15) is connected with the lower adjusting frame beam (13).
3. A transition support for a high-rise coal face as claimed in claim 2, wherein: the base (1) is provided with a connecting frame (16), two ends of the connecting frame (16) are respectively connected with a corresponding left side plate (10) and right side plate (11), and the base (1) is integrally formed with the left side plate (10), the right side plate (11) and the connecting frame (16).
4. A transition support for a steeply inclined coal face as claimed in claim 3, wherein: a group of opposite through holes (111) are formed in the two side plates (11), and a passage for a worker to pass through is formed between the two through holes (111).
5. A transition support for a high-rise coal face as claimed in claim 1, wherein: the utility model discloses a flexible roof beam, including roof beam (2), shield roof beam (3), roof beam (2) are kept away from the one end of shield roof beam (3) and are equipped with preceding flexible roof beam (21), be connected with preceding flexible hydro-cylinder (22) on roof beam (2), the output of preceding flexible hydro-cylinder (22) is connected with preceding flexible roof beam (21) for drive preceding flexible roof beam (21) stretch out towards the direction of keeping away from shield roof beam (3), in order to extend the length of roof beam (2).
6. A transition support for a high-rise coal face as claimed in claim 1, wherein: the two sides of the shield beam (3) are provided with a shield plate (31), a side pushing oil cylinder (32) is arranged in the shield beam (3), and the output end of the side pushing oil cylinder (32) is connected with the shield plate (31) and used for driving the shield plate (31) to move along the width direction of the shield beam (3).
7. A transition support for a high-rise coal face as claimed in claim 1, wherein: the connecting rod assembly (4) comprises a front connecting rod (41) and a rear connecting rod (42), one ends of the front connecting rod (41) and the rear connecting rod (42) are hinged with the base (1), and the other ends of the front connecting rod (41) and the rear connecting rod (42) are hinged with the shield beam (3).
8. A transition support for a high-rise coal face as claimed in claim 1, wherein: the first driving assembly (5) comprises four jacking oil cylinders, wherein the jacking oil cylinders are connected to the base (1), and the output ends of the jacking oil cylinders are connected with the top beam (2) and used for driving the top beam (2) to lift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311576105.7A CN117386426A (en) | 2023-11-23 | 2023-11-23 | Transition support for steep coal face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311576105.7A CN117386426A (en) | 2023-11-23 | 2023-11-23 | Transition support for steep coal face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117386426A true CN117386426A (en) | 2024-01-12 |
Family
ID=89437457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311576105.7A Pending CN117386426A (en) | 2023-11-23 | 2023-11-23 | Transition support for steep coal face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117386426A (en) |
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2023
- 2023-11-23 CN CN202311576105.7A patent/CN117386426A/en active Pending
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