CN117211843B - Coal mine roof supporting device - Google Patents
Coal mine roof supporting device Download PDFInfo
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- CN117211843B CN117211843B CN202311481396.1A CN202311481396A CN117211843B CN 117211843 B CN117211843 B CN 117211843B CN 202311481396 A CN202311481396 A CN 202311481396A CN 117211843 B CN117211843 B CN 117211843B
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 135
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 230000008859 change Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000007142 ring opening reaction Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention relates to the technical field of protection of coal mine processing equipment, and discloses a coal mine roof supporting device, which comprises a pair of parallel opposite side supporting beams, wherein a transmission rod at one end of each side supporting beam is connected with a front edge plate, and a supporting body is connected between the two side supporting beams in a sliding manner; the two ends of the bottoms of the two side support beams are fixedly connected with a third hydraulic rod; the supporting body comprises a plurality of supporting longitudinal beams arranged between two side supporting beams, when the second gear rotates, the rack is driven to slide and descend on the connecting box cover, after the side supporting beams are matched with the pulley seat and the top plate, each pulley seat is changed, and when the first hydraulic rod drives the supporting longitudinal beams, the inclination angle of the main supporting cross beam and the supporting longitudinal beams is changed, and the top plate of the ascending and descending slope section is matched, so that the supporting performance is improved, the large-area hollowed-out phenomenon between the device and the top plate is prevented, the supporting force is insufficient, and the lifting distance of the hydraulic transmission rod is not required to be adjusted for a plurality of times.
Description
Technical Field
The invention relates to the technical field of protection of coal mine processing equipment, in particular to a coal mine roof supporting device.
Background
The existing coal mine roof is supported in the coal mine tunnel by adopting a reticular structure, the roof bottom is required to be effectively supported during construction, the mining machine is prevented from vibrating in the mine tunnel in the construction process, dangers are generated, the traditional supporting device is mostly permanently fixed, a large number of steel knots are mostly adopted to support between the top and the bottom of the mine tunnel, the mine tunnel is difficult to detach, the later treatment is complicated, and when the mine tunnel is installed, a plurality of people are required to cooperate, the mine tunnel cannot be adjusted and replaced, and the mining machine is processed to a place where the supporting device is placed, so that manpower and material resources are wasted.
In order to solve the problem, the existing supporting device is provided with a supporting tool which adopts a movable mode, the supporting device is formed by taking a plurality of hydraulic transmission rods as supporting columns, the upper side of the supporting device is a beam and a longitudinal beam of the supporting device, the lower side of the beam is connected with an upright post, the beam upper longitudinal beam and a connecting seat are connected, the two beams are connected into a whole through pushing jacks, one hydraulic transmission rod contacts the bottom of a mine tunnel when the supporting frame is carried out, the other hydraulic transmission rod is in a contracted state and separated from a bottom plate, the beam and the longitudinal beam above the supporting device are also contracted, the two pushing jacks extend out, the contracted hydraulic transmission rod and the longitudinal beam are pushed out forwards, after reaching the position, the contracted hydraulic transmission rod extends out again to reach the ground, and then the forward operation is completed, in the forward operation of the device, and the device is completed.
Disclosure of Invention
The invention aims to provide a coal mine roof supporting device which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a supporting device for a coal mine roof comprises a pair of parallel opposite side supporting beams, wherein one ends of the two side supporting beams are connected with a front edge plate through transmission, and a supporting body is connected between the two side supporting beams in a sliding manner; the two ends of the bottoms of the two side support beams are fixedly connected with a third hydraulic rod; the support body comprises a plurality of support longitudinal beams arranged between two side support beams, a plurality of main support cross beams are fixedly arranged on the support longitudinal beams in a crisscross mode, two ends of the support longitudinal beams are propped against the side support beams, two ends of the bottom of each main support cross beam are slidably connected with a position connecting plate, a fourth hydraulic rod is fixedly arranged at the bottom of each position connecting plate, and the support longitudinal beams are in transmission connection with the side support beams; a plurality of pulley seats are equidistantly arranged on each side supporting beam, and the top of each pulley seat is in transmission connection with a transmission assembly for enabling the main supporting cross beam and the supporting longitudinal beam to change initial angles; the rotating assembly comprises a bearing arranged on one side of a connecting sheath, an inner rotating rod is fixedly arranged at one end of a sheath key shaft, a sleeve is arranged on one side of an outer ring of the bearing, a plurality of pairs of mutually-repulsive magnets are fixedly arranged between the sleeve and the inner rotating rod, a second gear is fixedly arranged at one end of the inner rotating rod, a connecting box cover is fixedly arranged beside each sleeve, and a rack meshed with the second gear is slidably connected to the connecting box cover, and is abutted against the main supporting beam.
Preferably, the side support beam is connected with the pulley seat in a sliding manner, each connecting plate is L-shaped, a telescopic cylinder is fixedly installed at one end of each connecting plate, a sliding column is fixedly installed at the position, close to the connecting plate, of each main support beam, and the sliding column is fixedly connected with the telescopic cylinder.
Preferably, a pair of fixing seats are respectively arranged on opposite surfaces between the two side supporting beams, each fixing seat is fixedly connected with a first hydraulic rod, and the output end of each first hydraulic rod is in sliding connection with the supporting longitudinal beam.
Preferably, every equal fixedly connected with bottom plate in side supporting beam bottom, drive assembly includes sliding connection's logical post on the bottom plate, bottom plate and pulley block bottom are fixed, lead to the post outer lane and cup joint the first spring that supports between bottom plate and side supporting beam, pulley block bottom fixed mounting has the pinion rack, side supporting beam bottom is being close to the other fixed mounting who leads to the post has the connecting sheath, rotate the connecting sheath key axle on the connecting sheath, be fixed with on the sheath key axle with the first gear of pinion rack meshing, sheath key axle axis of rotation one end fixedly connected with is used for making the rotating assembly that the supporter rose.
Preferably, a plurality of force-distributing cylinders are fixedly arranged at the top of each main supporting beam, the top of each force-distributing cylinder is a pressure part, and the pressure parts are propped against the culvert top plate.
Preferably, the pressure part is made of a centroid ball moving on the component force cylinder, a movable plate sliding in the component force cylinder and a second spring arranged at the bottom of the movable plate, and the bottom of the second spring is connected with the main supporting beam.
Preferably, the ring opening at the top of the component force cylinder is inwards protruded to limit the highest moving distance of the centroid sphere, the baffle ring is fixedly arranged in the component force cylinder to limit the lowest moving distance of the centroid sphere, and a plurality of discrete plates are fixedly arranged on the centroid sphere.
Preferably, each bottom plate is fixedly connected with a second hydraulic rod at two ends close to the front edge plate, and the second hydraulic rods are used for controlling the front edge plate to rotate.
Preferably, the pulley seat and the discrete plates are made of nonmetallic materials.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the third hydraulic rod or the fourth hydraulic rod is used for lifting, the first hydraulic rod is used for pushing the supporting longitudinal beam, the main supporting transverse beam and the supporting longitudinal beam slide on the side supporting beam, so that the whole device has a walking function, when the main supporting beam and the supporting longitudinal beam walk in a tunnel culvert, the side supporting beam contacts with the top of an ascending or descending slope section, the pulley seat descends on the side supporting beam, the toothed plate drives the first gear to rotate, the first gear rotates to drive the inner rotary rod to rotate, the second gear synchronously rotates in the same direction, when the second gear rotates, the rack is driven to slide and descend on the connecting cover, when the side supporting beam and the pulley seat are matched with the top plate, the rack with the changed position is driven by the first hydraulic rod, the inclination angle of the main supporting transverse beam and the supporting longitudinal beam are further changed, and the top plate of the ascending and descending slope section are matched, so that the supporting performance is improved, a large-area hollowed phenomenon between the device and the top plate is prevented, and the lifting distance of the hydraulic transmission rod is not required to be adjusted for a plurality of times;
2. by arranging a large number of racks at the bottoms of the main supporting cross beam and the supporting longitudinal beam to serve as supports, the supporting effect can be remarkably improved except for the fourth hydraulic rod, acting forces on the main supporting cross beam and the supporting longitudinal beam can be conducted, and the force-distributing cylinder is prevented from being deformed under force.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
FIG. 3 is a schematic view of the mating structure of the side support beams and the drive assembly of the present invention;
FIG. 4 is a schematic view of the mating structure of the main support cross member and the support longitudinal member of the present invention;
FIG. 5 is a schematic view of a transmission assembly according to the present invention;
FIG. 6 is a schematic view of the connection of the main support beam and the interface board of the present invention;
FIG. 7 is a schematic view of the structure of the force-dividing cylinder and the main supporting beam with the separate plates of the present invention;
fig. 8 is a schematic view of the internal structure of the force-dividing cylinder of the invention.
In the figure: 1-side support beams; 2-pulley seats; 3-main supporting beams; 301-supporting a longitudinal beam; 302-a patch panel; 303-force-distributing cylinder; 304-a spool; 305-a telescopic cylinder; 4-a bottom plate; 401-column passing; 5-leading edge panel; 6-connecting sheath; 7-sheath bond shaft; 8-a first gear; 9-a first spring; 10-tooth plate; 11-a fixed seat; 12-a first hydraulic rod; 13-a second hydraulic lever; 14-a third hydraulic lever; 15-a fourth hydraulic lever; 16-sleeve; 17-bearings; 18-magnet; 19-an inner rotating rod; 20-a second gear; 21-connecting a box cover; 22-racks; 23-a second spring; 24-a movable plate; 25-centroid sphere; 26-discrete plates.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the present invention provides a technical solution: the coal mine roof supporting device comprises a pair of parallel opposite side supporting beams 1, wherein one end of each side supporting beam 1 is connected with a front edge plate 5 through a transmission rod, and a supporting body is connected between the two side supporting beams 1 in a sliding manner; the two ends of the bottoms of the two side support beams 1 are fixedly connected with a third hydraulic rod 14; the supporting body comprises a plurality of supporting longitudinal beams 301 arranged between two side supporting beams 1, a plurality of main supporting cross beams 3 are fixedly arranged on the supporting longitudinal beams 301 in a crisscross mode, two ends of the supporting longitudinal beams 301 are propped against the side supporting beams 1, two ends of the bottom of each main supporting cross beam 3 are slidably connected with a position-connecting plate 302, a fourth hydraulic rod 15 is fixedly arranged at the bottom of each position-connecting plate 302, and the supporting longitudinal beams 301 are in transmission connection with the side supporting beams 1; each side supporting beam 1 is provided with a plurality of pulley seats 2 at equal intervals, the top of each pulley seat 2 is in transmission connection with a transmission component used for enabling the main supporting beam 3 and the supporting longitudinal beam 301 to change an initial angle, pulleys on the pulley seats 2 are separated from the pulley seats 2, the pulleys move up and down to drive the transmission component to work, the main supporting beam 3 and the supporting longitudinal beam 301 driven by the operation of the transmission component change angles with each other, when a top plate needs to be supported, the main supporting beam 3 and the supporting longitudinal beam 301 are driven to rise through a fourth hydraulic rod 15 in the device, the side supporting beam 1 is driven to rise by a third hydraulic rod 14, the main supporting beam 3, the supporting longitudinal beam 301 and the side supporting beam 1 can be enabled to be located on the same horizontal plane, each third hydraulic rod 14 and the fourth hydraulic rod 15 are provided with independent operation units, in operation, the third hydraulic rod 14 can be lifted independently when the ground is uneven, the fourth hydraulic rod 15 is identical, when equipment needs to move, the equipment can slide between the two side supporting beams 1 through the main supporting beam 3 and the supporting longitudinal beam 301, wherein the main supporting beam 3 and the side supporting beam 301 can be driven by the third hydraulic rod 14 and the fourth hydraulic rod 15 can be lifted, the side supporting beam 1 can be enabled to slide along the ground, the side supporting beam 1 can be prevented from sliding along the fourth hydraulic rod 15, and the side supporting beam 1 can be safely lifted, and the side supporting beam 1 can be in a first side supporting the ground, and can be safely lifted, and pulled by the side supporting beam 301 can be on the side by the side supporting rods and can be on the ground on the side by the side supporting the side supporting beam 15; a pair of fixing seats 11 are arranged on opposite surfaces between the two side supporting beams 1, a first hydraulic rod 12 is fixedly connected to each fixing seat 11, and the output end of the first hydraulic rod 12 is in sliding connection with the supporting longitudinal beam 301;
when the device encounters an up-down slope, as shown in fig. 1, the third hydraulic rod 14 is started to enable the output end of the third hydraulic rod 14 to leave the ground, the main support beam 3 and the side edge of the support longitudinal beam 301 are controlled by the first hydraulic rod 12 to enable the side support beam 1 to slide towards the slope roof, then the pulley seat 2 positioned at the front section gradually descends on the side support beam 1 after the pulley seat 2 contacts the roof, in the process, the pulley seat 2 drives the transmission assembly to rotate, the initial position is changed after the transmission assembly descends, the output end of the transmission assembly is enabled to contact the ground by driving the third hydraulic rod 14, the output end of the fourth hydraulic rod 15 is enabled to ascend by starting the fourth hydraulic rod 15, the first hydraulic rod 12 resets to enable the main support beam 3 and the support longitudinal beam 301 to slide along the two side support beams 1, finally the main support beam 3 and the support longitudinal beam 301 are horizontally aligned with the side support beam 1, but the angles of the main support beam 3 and the support longitudinal beam 301 are matched with the roof, and the supporting effect between the third hydraulic rod 14 and the fourth hydraulic rod 15 is improved.
Specifically, the side support beams 1 and the pulley base 2 are slidably connected, each of the positioning plates 302 is L-shaped, a telescopic cylinder 305 is fixedly mounted at one end of each of the positioning plates 302, a sliding column 304 is fixedly mounted at the position where each of the main support beams 3 is close to the positioning plate 302, the sliding column 304 and the telescopic cylinder 305 are fixedly connected, when the main support beams 3 and the support longitudinal beams 301 meet slopes, a trend of changing angles is generated, so that the main support beams 3 drive the fourth hydraulic rod 15 to move, and therefore the telescopic cylinder 305 and the openings on the positioning plates 302 enable the sliding column 304 to slide on the positioning plates 302 when the angles of the main support beams 3 are changed, and redundant spaces are formed in the openings of the positioning plates 302 to enable the main support beams 3 to drive the sliding column 304 to slide, so that the fourth hydraulic rod 15 is prevented from tilting.
Specifically, the bottom of each side supporting beam 1 is fixedly connected with a bottom plate 4, the transmission assembly comprises a through column 401 which is slidably connected on the bottom plate 4, the bottom plate 4 is fixed with the bottom of a pulley seat 2, a first spring 9 which is supported between the bottom plate 4 and the side supporting beam 1 is sleeved on the outer ring of the through column 401, a toothed plate 10 is fixedly installed at the bottom of the pulley seat 2, a connecting sheath 6 is fixedly installed near the through column 401 at the bottom of the side supporting beam 1, a sheath key shaft 7 is rotatably installed on the connecting sheath 6, a first gear 8 which is meshed with the toothed plate 10 is fixedly installed on the sheath key shaft 7, one end of a rotating shaft of the sheath key shaft 7 is fixedly connected with a rotating assembly which is used for enabling a supporting body to ascend and descend, when the side supporting beam 1 is transferred, the pulley seat 2 is contacted with a top plate through the pulley seat 2, the first spring 9 is compressed when the pulley seat 2 descends, the toothed plate 10 descends to drive the first gear 8 to rotate, as shown in fig. 5, and when the first gear 8 rotates synchronously;
further, the rotating assembly comprises a bearing 17 installed at one side of the connecting sheath 6, an inner rotating rod 19 is fixedly installed at one end of the sheath key shaft 7, a sleeve 16 is installed at one side of an outer ring of the bearing 17, a plurality of pairs of mutually exclusive magnets 18 are fixedly installed between the sleeve 16 and the inner rotating rod 19, a second gear 20 is fixedly installed at one end of the inner rotating rod 19, a connecting cover 21 is fixedly installed near each sleeve 16 on the bottom plate 4, racks 22 meshed with the second gear 20 are slidingly connected on the connecting cover 21, the racks 22 are in contact with the main supporting beam 3, the inner rotating rod 19 and the second gear 20 are driven to realize synchronous movement, the second gear 20 rotates anticlockwise in the view of fig. 5, when the first hydraulic rod 12 drives the main supporting beam 3 and the supporting beam 301 to slide between the two side supporting beams 1, the racks 22 are in contact with the bottoms of the main supporting beam 3, namely, when the pulley seat 2 is in slope, the first gear 8 drives the second gear 20 to drive the main supporting beam 22 to descend, and finally the top plate 3 and the top plate 301 are driven to incline by the rotation of the first gear 8, and the inclination angle of the main supporting beam 3 and the top plate 301 are changed.
Specifically, a plurality of component force cylinders 303 are fixedly installed at the top of each main supporting beam 3, the top of each component force cylinder 303 is a pressure part, and the pressure parts are propped against a culvert top plate; the pressure part is made of a centroid ball 25 moving on the component force cylinder 303, a movable plate 24 sliding in the component force cylinder 303 and a second spring 23 arranged at the bottom of the movable plate 24, the bottom of the second spring 23 is connected with the main supporting beam 3, when the main supporting beam 3 and the side supporting beam 1 are matched with the top plate, the component force cylinder 303 is abutted to the pothole part on the top plate in advance in order to enable the top of the main supporting beam 3 to be fully contacted with the top plate, the centroid ball 25 on the component force cylinder 303 is lifted and lowered in the component force cylinder 303, the centroid ball 25 contacting the top plate is lowered, and the centroid ball 25 not contacting the top plate is in an initial position, so that the pothole part of the top plate can be contacted with the centroid ball 25, and a force balance state is achieved.
Further, the ring opening at the top of the component force cylinder 303 protrudes inwards to limit the highest movement distance of the centroid ball 25, a baffle ring is fixedly installed inside the component force cylinder 303 to limit the lowest movement distance of the centroid ball 25, a plurality of discrete plates 26 are fixedly installed on the centroid ball 25, each bottom plate 4 is fixedly connected with a second hydraulic rod 13 at two ends close to the front edge plate 5, the second hydraulic rods 13 are used for controlling the front edge plate 5 to rotate, in order to prevent the pressure increase at the front edge plate 5 caused by the fact that the contact surface of the centroid ball 25 to the top plate is too small, so that coal mine chips on the top plate drop to injure people, the plurality of discrete plates 26 are installed on the centroid ball 25 to split the pressure, and the movable plate 24 can enable the centroid ball 25 to swing on the component force cylinder 303 to cope with different pothole sizes or positions on the top plate.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a colliery roof support device, includes a pair of mutual parallel opposition's side support beam (1), two side support beam (1) one end is connected with leading edge board (5) through the transmission, its characterized in that: a support body is connected between the two side support beams (1) in a sliding way;
the two ends of the bottoms of the two side supporting beams (1) are fixedly connected with a third hydraulic rod (14);
the support body comprises a plurality of support longitudinal beams (301) arranged between two side support beams (1), a plurality of main support cross beams (3) are fixedly arranged on the support longitudinal beams (301) in a crisscross mode, two ends of the support longitudinal beams (301) are propped against the side support beams (1), two ends of the bottom of each main support cross beam (3) are slidably connected with a position connecting plate (302), a fourth hydraulic rod (15) is fixedly arranged at the bottom of each position connecting plate (302), and the support longitudinal beams (301) are in transmission connection with the side support beams (1);
a plurality of pulley seats (2) are equidistantly arranged on each side supporting beam (1), and transmission components for enabling the main supporting beam (3) and the supporting longitudinal beam (301) to change initial angles are connected to the tops of the pulley seats (2) in a transmission mode;
every side supporting beam (1) bottom all fixedly connected with bottom plate (4), drive assembly includes sliding connection's logical post (401) on bottom plate (4), bottom plate (4) and pulley block (2) bottom are fixed, logical post (401) outer lane cup joints first spring (9) that support between bottom plate (4) and side supporting beam (1), pulley block (2) bottom fixed mounting has pinion rack (10), side supporting beam (1) bottom is near logical post (401) side fixed mounting have connecting sheath (6), rotate on connecting sheath (6) and connect sheath key (7), be fixed with on sheath key (7) with pinion rack (10) engaged first gear (8), sheath key (7) axis of rotation one end fixedly connected with is used for making the rotatory subassembly of supporter lift;
the rotating assembly comprises a bearing (17) arranged on one side of a connecting sheath (6), an inner rotating rod (19) is fixedly arranged at one end of a sheath key shaft (7), a sleeve (16) is arranged on one side of an outer ring of the bearing (17), a plurality of pairs of mutually exclusive magnets (18) are fixedly arranged between the sleeve (16) and the inner rotating rod (19), a second gear (20) is fixedly arranged at one end of the inner rotating rod (19), a connecting cover (21) is fixedly arranged beside each sleeve (16) close to the bottom plate (4), a rack (22) meshed with the second gear (20) is connected to the connecting cover (21) in a sliding manner, and the rack (22) is in conflict with the main supporting beam (3).
2. A roof support assembly for a coal mine as claimed in claim 1, wherein: the side support beams (1) are in sliding connection with the pulley seats (2), each connecting plate (302) is L-shaped, a telescopic cylinder (305) is fixedly installed at one end of each connecting plate (302), a sliding column (304) is fixedly installed at the position, close to the connecting plate (302), of each main support beam (3), and the sliding column (304) and the telescopic cylinder (305) are fixedly connected.
3. A roof support arrangement for a coal mine as claimed in claim 2, wherein: a pair of fixing seats (11) are arranged on opposite faces between the two side supporting beams (1), a first hydraulic rod (12) is fixedly connected to each fixing seat (11), and the output end of the first hydraulic rod (12) is in sliding connection with the supporting longitudinal beam (301).
4. A roof support assembly for a coal mine as claimed in claim 1, wherein: a plurality of component force cylinders (303) are fixedly arranged at the top of each main supporting beam (3), the tops of the component force cylinders (303) are pressure parts, and the pressure parts are abutted against the culvert top plates.
5. A roof support assembly for a coal mine as claimed in claim 4, wherein: the pressure part is made of a centroid ball (25) moving on the component force cylinder (303), a movable plate (24) sliding in the component force cylinder (303) and a second spring (23) arranged at the bottom of the movable plate (24), and the bottom of the second spring (23) is connected with the main supporting beam (3).
6. A roof support assembly for a coal mine as claimed in claim 4, wherein: the top ring opening of the component force cylinder (303) protrudes inwards to limit the highest movement distance of the centroid ball (25), a baffle ring is fixedly arranged in the component force cylinder (303) to limit the lowest movement distance of the centroid ball (25), and a plurality of discrete plates (26) are fixedly arranged on the centroid ball (25).
7. A roof support assembly for a coal mine as claimed in claim 1, wherein: each bottom plate (4) is fixedly connected with a second hydraulic rod (13) at two ends close to the front edge plate (5), and the second hydraulic rods (13) are used for controlling the front edge plate (5) to rotate.
8. A roof support assembly for a coal mine as claimed in claim 6, wherein: the pulley seat (2) and the discrete plate (26) are both made of nonmetallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311481396.1A CN117211843B (en) | 2023-11-09 | 2023-11-09 | Coal mine roof supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311481396.1A CN117211843B (en) | 2023-11-09 | 2023-11-09 | Coal mine roof supporting device |
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| Publication Number | Publication Date |
|---|---|
| CN117211843A CN117211843A (en) | 2023-12-12 |
| CN117211843B true CN117211843B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311481396.1A Active CN117211843B (en) | 2023-11-09 | 2023-11-09 | Coal mine roof supporting device |
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| CN117211843A (en) | 2023-12-12 |
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