CN117646639B - Mining portable full-section supporting metal net temporary supporting device and method - Google Patents
Mining portable full-section supporting metal net temporary supporting device and method Download PDFInfo
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- CN117646639B CN117646639B CN202410102188.4A CN202410102188A CN117646639B CN 117646639 B CN117646639 B CN 117646639B CN 202410102188 A CN202410102188 A CN 202410102188A CN 117646639 B CN117646639 B CN 117646639B
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 277
- 239000002184 metal Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000005065 mining Methods 0.000 title claims abstract description 31
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 7
- 238000010009 beating Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
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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)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Fencing (AREA)
Abstract
The invention discloses a mining portable full-section support metal net temporary support device and method, and belongs to the technical field of support. The utility model provides a mining portable full section support metal mesh temporary support device, includes adjustable telescopic high hydraulic cylinder, still includes: the adjustable base is arranged at the bottom of the hydraulic oil cylinder; the sleeve is arranged at the top of the hydraulic oil cylinder, and a piston rod of the hydraulic oil cylinder is connected with the sleeve; the support plates are provided with a plurality of support plates, and the plurality of support plates are uniformly distributed on the top of the sleeve in a circumference manner; the invention can support the full-section metal net in a larger area, reduce the supporting times of the full-section metal net, avoid manually lifting the metal net to perform anchor rod beating operation, reduce the workload and the working strength of workers, improve the supporting construction efficiency of the metal net, effectively support the metal net, ensure that the full-section metal net is tightly attached to a roadway roof, and ensure the fixing effect of the metal net.
Description
Technical Field
The invention relates to the technical field of support, in particular to a mining portable full-section support metal net temporary support device and method.
Background
As shallow mineral resources are gradually exhausted, the mineral resources gradually move to deep mining, and as the mining depth increases, the influence of 'three-high-one disturbance' on underground rock mass increases, and in the process of tunneling a roadway by mine staff, the tunneling work breaks the original ground pressure balance, so that the formed roadway needs to be supported so as to ensure the safety of underground staff and equipment. The existing supporting method generally supports the roadway through the cooperation of the anchor rod fixed metal net and the roadway top plate.
When the full-section metal net with larger net surface and longer length is fixed, the full-section metal net can only support limited area, the supporting position of the metal net needs to be replaced for multiple times to fix the anchor rod, the workload is large, the operation is complex, and the supporting efficiency of the metal net is affected. In addition, because the existing supporting device cannot be suitable for roadway supports with different inclined planes, the supporting surface of the metal net is small, the metal net is not in contact with the roadway top plate, and a good supporting effect cannot be achieved.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a mining portable full-section supporting metal net temporary supporting device and method.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a mining portable full section support metal mesh temporary support device, includes adjustable telescopic high hydraulic cylinder, still includes:
the adjustable base is arranged at the bottom of the hydraulic oil cylinder;
the sleeve is arranged at the top of the hydraulic oil cylinder, and a piston rod of the hydraulic oil cylinder is connected with the sleeve; and
the support plates are arranged and uniformly distributed on the top of the sleeve in a circumference manner;
and an inclination angle adjusting assembly is arranged between the supporting plate and the sleeve, and the supporting plate supports the metal net to be attached to the roadway top plate.
Preferably, the inclination angle adjusting assembly comprises a moving block which is slidably connected in the sleeve, a first elastic element is arranged between the top of the moving block and the inner wall of the sleeve, pushing rods which are in one-to-one correspondence with the supporting plates are uniformly distributed on the circumference of the moving block, one end, far away from the moving block, of each pushing rod is movably connected with the supporting plates, and a movable groove for the pushing rods to move is formed in the sleeve.
Preferably, the supporting plate comprises a fixed supporting plate fixedly connected with the top of the sleeve, a movable supporting plate rotatably connected with one end of the fixed supporting plate far away from the sleeve, and a longitudinal supporting plate fixedly arranged at the end part of the movable supporting plate.
Preferably, a sliding groove is formed in the bottom of the movable supporting plate, a guide rod is fixedly arranged in the sliding groove, a sliding block is connected onto the guide rod in a sliding manner, a second elastic element is sleeved on the outer side of the guide rod, two ends of the second elastic element are respectively connected with the sliding block and the inner wall of the sliding groove, and two ends of the pushing rod are respectively connected with the sliding block and the moving block in a rotating manner through pin shafts.
Preferably, the working grooves are formed in two sides of the longitudinal supporting plate, two rotating shafts are symmetrically and rotationally connected in each working groove, the connecting plates are fixedly arranged on the outer sides of the rotating shafts, first torsion springs with two ends respectively connected with the connecting plates and the inner walls of the working grooves are sleeved on the outer sides of the rotating shafts, the auxiliary supporting plates are fixedly arranged on the outer sides of the rotating shafts, the stress blocks are vertically and slidably connected in the working grooves, elastic telescopic rods are arranged between the stress blocks and the bottom walls of the working grooves, extrusion blocks are fixedly arranged at the bottoms of the stress blocks, and stress rods movably offset with the extrusion blocks are arranged on the rotating shafts.
Preferably, the auxiliary supporting plate comprises a first plate body fixedly connected with the rotating shaft and a second plate body rotationally connected with the first plate body through a pin shaft, a second torsion spring is sleeved on the pin shaft, and two supporting legs of the second torsion spring are respectively propped against the first plate body and the second plate body.
Preferably, the top of the sleeve is fixedly provided with a working tube, a movable plate is connected in the working tube in a sliding manner, a third elastic element is arranged between the movable plate and the inner wall of the working tube, one side of the movable plate, which deviates from the third elastic element, is provided with a plurality of elastic hook rods which are uniformly distributed and are movably propped against the top of the working tube, the top of the movable plate is also provided with a propping piece, and the height of the top of the propping piece is higher than that of the elastic hook rods.
Preferably, the pressure-resisting piece comprises a hollow rod body arranged on the movable plate and a pressure-resisting rod in the hollow rod body in a sliding connection mode, wherein evenly-distributed pull ropes are arranged on the periphery of the pressure-resisting rod, and one end, far away from the top of the pressure-resisting rod, of each pull rope penetrates through the hollow rod body and is connected with the elastic hook rod.
Preferably, the adjustable base comprises a mounting plate fixedly arranged at the bottom of the hydraulic cylinder, a plurality of adjustable supporting legs are circumferentially arranged at the bottom of the mounting plate, and a bottom plate is arranged at one end, far away from the mounting plate, of each adjustable supporting leg.
The invention also discloses a mining portable full-section supporting metal net temporary supporting method, which comprises a mining portable full-section supporting metal net temporary supporting device, and further comprises a supporting method for a roadway top plate in a flat state and a supporting method for the roadway top plate in an uneven bottom inclined state:
the supporting method for the roadway roof in the flat-loading state comprises the following steps: s1: when the device is used, the device is placed in a roadway, constructors adjust the height of each adjustable supporting leg of the adjustable base according to the flatness of the ground, and then the adjusted adjustable supporting legs are limited by bolts, so that the adjustable base is stably placed in the roadway through a bottom plate, and a hydraulic cylinder at the top of the adjustable base is vertically placed;
s2: then, constructors place the metal net on a plane formed by each supporting plate at the top of the sleeve, in the process, the constructors pull the supporting rods upwards to enable the supporting rods to move upwards in the hollow rod body, and when the supporting rods move upwards, the elastic hook rods are driven to straighten through the pull ropes, so that the elastic hook rods and the supporting pieces conveniently penetrate through meshes of the metal net, then, the pulling force on the supporting rods is released, the elastic hook rods recover the bending state and hook the metal net, and the follow-up metal net is prevented from slipping when moving upwards along with the supporting plates;
s3: then controlling the hydraulic cylinder to work, wherein a piston rod of the hydraulic cylinder moves upwards and drives the sleeve to move upwards through the moving block and the first elastic element until the top of the sleeve is abutted to the top plate of the roadway;
when the top of the sleeve is abutted with the bottom surface of the tunnel top plate, the abutting part at the top of the sleeve is abutted with the tunnel top plate, the abutting part is forced to move downwards and drives the moving plate to move downwards in the working pipe, the moving plate drives the elastic hook rod to move downwards when moving downwards, the bending amplitude of the elastic hook rod is reduced along with the shrinkage of the elastic hook rod into the working pipe, and the elastic hook rod is not hooked on the metal mesh;
s4: along with the continuous operation of the hydraulic cylinder, after the sleeve drives the metal net to be abutted against the roadway roof, the sleeve cannot move upwards continuously, the moving block which moves upwards continuously extrudes the first elastic element, the first elastic element is stressed and compressed, and the moving block drives the movable supporting plate to move upwards relative to the fixed supporting plate through the pushing rod, so that the movable supporting plate drives the metal net to be abutted against the roadway roof;
s5: when the movable supporting plate drives the metal net to be abutted against the roadway top plate, the longitudinal supporting plate arranged at the end part of the movable supporting plate drives the metal net to be abutted against the roadway top plate, the supporting area of the metal net is further increased, when the longitudinal supporting plate drives the metal net to be abutted against the roadway top plate, the stress block on the longitudinal supporting plate is subjected to the reaction force of the roadway top plate, the stress block contracts inwards of the working groove, the extrusion block at the bottom of the stress block extrudes the stress rod, so that the stress rod drives the rotating shaft in the working groove to rotate, and when the rotating shaft rotates, the auxiliary supporting plate is driven to move out of the longitudinal supporting plate, and the supporting area of the supporting plate on the metal net is further enlarged;
when the auxiliary supporting plate encounters obstruction in the process of rotating along with the rotating shaft, the second plate body of the auxiliary supporting plate is blocked, can not continue to rotate along with the rotating shaft and can rotate relative to the first plate body;
s6: after the metal net is temporarily supported, a constructor drives an anchor rod into a region where the metal net is fixed, then the device is restored to an original state, the device is far away from the current anchor rod driving region, and other unsupported metal net regions are sequentially supported and driven;
the supporting method for the roadway roof in the inclined state with uneven bottom comprises the following steps: when the bottom of the tunnel roof is uneven and is in an inclined state, one movable supporting plate at the periphery of the sleeve can drive the metal net to be abutted against the bottom of the lower tunnel roof at first, the movable supporting plate which is abutted against the tunnel roof and is driven by the metal net can not be continuously moved upwards under the action of the pushing rod along with the continuous upward movement of the moving block, the side pushing rod can drive the sliding block to slide on the guide rod, the second elastic element is compressed, the movable supporting plate in the other directions can be continuously lifted relative to the fixed supporting plate connected with the movable supporting plate under the pushing of the pushing rod until all the movable supporting plates drive the metal net to be attached to the tunnel roof, and the operation of steps S5-S6 is repeated.
Compared with the prior art, the invention provides a mining portable full-section support metal net temporary support device and method, which have the following beneficial effects:
1. according to the mining portable full-section support metal net temporary supporting device and method, the supporting plate is lifted through the hydraulic oil cylinder, so that the supporting plate drives the metal net to move and be abutted against the roadway roof, the anchor net is supported by a hand for anchor rod beating operation by constructors, damage to the constructors is avoided, roof caving accidents are avoided, safety problems in the anchor net support process are reduced, meanwhile, labor intensity of the constructors is reduced, and working efficiency is improved.
2. According to the mining portable full-section supporting metal net temporary supporting device and method, the supporting plate comprises the fixed supporting plate, the movable supporting plate and the vertical supporting plate which are transversely arranged, and the supporting plate is matched with the auxiliary supporting plate which is rotated on the vertical supporting plate, so that the supporting area of the supporting plate to the metal net is increased, an anchor rod can be fixed in a large range of the supported metal net at one time, the anchor rod is supported again in a fixed area far away from the current metal net, the supporting times of the full-section metal net are reduced, and the supporting construction efficiency of the metal net is improved.
3. According to the mining portable full-section supporting metal net temporary supporting device and method, the movable supporting plate and the fixed supporting plate are arranged in a rotating mode, so that the supporting plate can be adapted to the bottom surfaces of roadway top plates with different inclined planes, the supporting plate can drive the metal net to be tightly attached to the roadway top plates, the fixing effect on the metal net is good, and the working personnel can conveniently construct the mining portable full-section supporting metal net temporary supporting device.
4. According to the mining portable full-section support metal net temporary supporting device and method, the elastic hook rod is arranged at the top of the sleeve, the metal net is hooked by the elastic hook rod, so that the metal net cannot slip along with the lifting process of the supporting plate, the damage to workers caused by the sliding of the metal net and the influence on the construction progress are prevented, and the safety of the metal net support construction is improved.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a schematic view of a portion of the structure of the present invention;
FIG. 4 is a partially enlarged schematic illustration of the structure of portion A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic cross-sectional view of a working tube according to the present invention;
FIG. 6 is a schematic diagram of a cross-sectional structure of a working tube according to the present invention;
fig. 7 is a schematic view of the structure of the supporting plate of the present invention supporting the steel wire mesh;
FIG. 8 is a schematic view of the lifting structure of the movable supporting plate relative to the fixed supporting plate;
FIG. 9 is a schematic view of the structure of the longitudinal strut of the present invention;
FIG. 10 is a schematic cross-sectional view of a longitudinal strut of the present invention;
FIG. 11 is a schematic view of the structure of the auxiliary stay plate of the present invention when the auxiliary stay plate is moved out of the longitudinal stay plate;
fig. 12 is a schematic structural view of the supporting plate of the present invention attached to an uneven roadway roof by pushing a metal mesh.
In the figure: 1. a hydraulic cylinder; 101. a piston rod; 2. an adjustable base; 201. a mounting plate; 202. an adjustable leg; 203. a bottom plate; 3. a sleeve; 301. a first elastic element; 302. a movable groove; 4. a support plate; 401. fixing the supporting plate; 402. a movable supporting plate; 4021. a chute; 4022. a guide rod; 4023. a slide block; 4024. a second elastic element; 403. longitudinal supporting plates; 5. a moving block; 501. a push rod; 6. a working groove; 601. a rotating shaft; 602. a connecting plate; 603. a first torsion spring; 604. an auxiliary stay plate; 6041. a first plate body; 6042. a second plate body; 6043. a second torsion spring; 605. a force-bearing rod; 7. a stress block; 701. an elastic telescopic rod; 702. extruding a block; 8. a working tube; 801. a moving plate; 802. a third elastic element; 803. an elastic hook rod; 804. a pressing member; 8041. a hollow rod body; 8042. a pressing rod; 8043. a pull rope; 9. a full section supporting metal net; 10. and a tunnel roof.
Detailed Description
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.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements 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.
Example 1: referring to fig. 1, 2, 3 and 7, a mining portable full-section support metal mesh temporary support device, including hydraulic cylinder 1 of adjustable flexible height, still include:
the adjustable base 2 is arranged at the bottom of the hydraulic cylinder 1;
the sleeve 3 is arranged at the top of the hydraulic oil cylinder 1, and a piston rod 101 of the hydraulic oil cylinder 1 is connected with the sleeve 3; and
the support plates 4 are arranged, and the plurality of support plates 4 are uniformly distributed on the top of the sleeve 3 in a circumference manner;
wherein, be provided with inclination adjustment subassembly between backup pad 4 and the sleeve pipe 3, backup pad 4 support metal mesh and tunnel roof laminating.
Further, the support plate 4 comprises a fixed support plate 401 fixedly connected with the top of the sleeve 3, a movable support plate 402 rotatably connected with one end of the fixed support plate 401 far away from the sleeve 3, and a longitudinal support plate 403 fixedly arranged at the end of the movable support plate 402.
Specifically, when the device is used, constructors adjust the adjustable base 2 according to the flatness of the ground, the hydraulic cylinder 1 at the top of the adjustable base 2 is vertically placed, then constructors place metal nets on the supporting plate 4 at the top of the sleeve 3, then the hydraulic cylinder 1 is controlled to operate, the piston rod 101 of the hydraulic cylinder 1 drives the sleeve 3 to move upwards, the sleeve 3 drives the metal nets to move and enable the metal nets to be abutted to the roadway roof through the supporting plate 4, the metal nets are prevented from being manually lifted to perform anchor rod operation, the working intensity of workers is reduced, the supporting plate 4 is arranged to be a fixed supporting plate 401, a movable supporting plate 402 and a longitudinal supporting plate 403, the supporting times of the full-section metal nets can be reduced under the action of the inclination angle adjusting assembly, the working amount of the workers is reduced, the supporting construction efficiency of the metal nets is improved, the full-section metal nets can be effectively supported, the full-section metal nets are tightly attached to the roadway roof, and the fixing effect of the metal nets is guaranteed.
Example 2: referring to fig. 1, fig. 2, fig. 3, fig. 7, fig. 8 and fig. 12, a mining portable full-section supporting metal mesh temporary supporting device, on the basis of embodiment 1, further, the inclination angle adjusting assembly includes a moving block 5 slidingly connected in a sleeve 3, a first elastic element 301 is arranged between the top of the moving block 5 and the inner wall of the sleeve 3, pushing rods 501 corresponding to the supporting plates 4 one by one are uniformly distributed on the circumference of the moving block 5, one end of each pushing rod 501 far away from the moving block 5 is movably connected with the supporting plate 4, and a movable groove 302 for the pushing rods 501 to move is formed in the sleeve 3.
Further, a sliding groove 4021 is formed in the bottom of the movable supporting plate 402, a guide rod 4022 is fixedly arranged in the sliding groove 4021, a sliding block 4023 is connected to the guide rod 4022 in a sliding mode, a second elastic element 4024 is sleeved on the outer side of the guide rod 4022, two ends of the second elastic element 4024 are connected with the sliding block 4023 and the inner wall of the sliding groove 4021 respectively, and two ends of the pushing rod 501 are connected with the sliding block 4023 and the moving block 5 in a rotating mode through pin shafts respectively.
Specifically, by controlling the hydraulic cylinder 1 to work, the piston rod 101 of the hydraulic cylinder 1 moves upwards and drives the sleeve 3 to move upwards through the moving block 5 and the first elastic element 301, the sleeve 3 drives the metal net to approach the roadway top plate through the supporting plate 4, when the bottom of the roadway top plate is uneven and is in an inclined state, one of the movable supporting plates 402 at the periphery of the sleeve 3 can drive the metal net to abut against the bottom of the lower roadway top plate at first, as the moving block 5 moves upwards continuously, the movable supporting plate 402 which drives the metal net to abut against the roadway top plate cannot move upwards continuously under the action of the pushing rod 501, the side pushing rod 501 can drive the sliding block 4023 to slide on the guide rod 4022, the second elastic element 4024 is compressed, and the movable supporting plate 402 in the other directions can continue to lift relatively to the fixed supporting plate 401 connected with the sliding block under the pushing of the pushing rod 501 until all the movable supporting plates 402 drive the metal net to abut against the roadway top plate, so that the single plate body supports the metal net to abut against the roadway top plate, and the metal net is prevented from being driven by the single plate body to abut against the roadway top plate when the upper roadway top plate is not a complete plane, thus the effective supporting area of the metal net is ensured to be convenient for workers to fix the metal net to the roadway.
Example 3: referring to fig. 3, fig. 7, fig. 8, fig. 9, fig. 10 and fig. 11, a mining portable full-section supporting metal mesh temporary supporting device is further provided, on the basis of embodiment 2, two sides of a longitudinal supporting plate 403 are provided with working grooves 6, each working groove 6 is symmetrically and rotatably connected with two rotating shafts 601, a connecting plate 602 is fixedly arranged on the outer side of each rotating shaft 601, two ends of each rotating shaft 601 are respectively sleeved with a connecting plate 602 and a first torsion spring 603 connected with the inner wall of each working groove 6, an auxiliary supporting plate 604 is fixedly arranged on the outer side of each rotating shaft 601, a stress block 7 is vertically and slidably connected in each working groove 6, an elastic telescopic rod 701 is arranged between each stress block 7 and the bottom wall of each working groove 6, an extrusion block 702 is fixedly arranged at the bottom of each stress block 7, and a stress rod 605 which is movably abutted against each extrusion block 702 is arranged on each rotating shaft 601.
Further, the auxiliary supporting plate 604 comprises a first plate body 6041 fixedly connected with the rotating shaft 601 and a second plate body 6042 rotationally connected with the first plate body 6041 through a pin shaft, a second torsion spring 6043 is sleeved on the pin shaft, and two supporting legs of the second torsion spring 6043 respectively abut against the first plate body 6041 and the second plate body 6042.
Specifically, when the movable supporting plate 402 drives the metal mesh to be abutted against the roadway top plate, the longitudinal supporting plate 403 arranged at the end part of the movable supporting plate 402 drives the metal mesh to be abutted against the roadway top plate, the supporting area of the metal mesh is further increased, and when the longitudinal supporting plate 403 drives the metal mesh to be abutted against the roadway top plate, the stress block 7 on the longitudinal supporting plate 403 is subjected to the reaction force of the roadway top plate, the stress block 7 is contracted inwards towards the working groove 6, the extrusion block 702 at the bottom of the stress block 7 extrudes the stress rod 605, so that the stress rod 605 drives the rotating shaft 601 in the working groove 6 to rotate, the auxiliary supporting plate 604 is driven to move out of the longitudinal supporting plate 403 when the rotating shaft 601 rotates, the supporting area of the supporting plate 4 on the metal mesh is further enlarged, and when the auxiliary supporting plate 604 encounters obstruction in the process of rotating along with the rotating shaft 601, if the roadway top plate at other positions is encountered, the second plate 6042 of the auxiliary supporting plate 604 is blocked, the second plate body 6042 can not continue to rotate along with the rotating shaft 601 and can rotate relatively to the first plate body 6041, the expansion of the auxiliary supporting plate 604 is avoided, the expansion of the other direction of the stress block is influenced, the rotating block is caused, the rotating block and the rotating block in the longitudinal supporting plate 403 at the end part of the stress block, the stress block 605 drives the rotating shaft in the working groove, the rotating shaft 601, the supporting plate, and the supporting plate can further support the supporting plate 4, when the supporting area of the metal mesh is further supported by the supporting plate is further at the supporting plate, and when the supporting support can be further supported by the supporting plate at a lower position.
Example 4: referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, on the basis of embodiment 3, further, a working tube 8 is fixedly arranged at the top of the sleeve 3, a moving plate 801 is slidably connected in the working tube 8, a third elastic element 802 is arranged between the moving plate 801 and the inner wall of the working tube 8, a plurality of elastic hook rods 803 which are uniformly distributed and are movably propped against the top of the working tube 8 are arranged at one side of the moving plate 801 away from the third elastic element 802, a propping piece 804 is further arranged at the top of the moving plate 801, and the height of the top of the propping piece 804 is higher than that of the elastic hook rods 803.
Further, the pressing member 804 includes a hollow rod 8041 disposed on the moving plate 801 and a pressing rod 8042 slidably connected in the hollow rod 8041, wherein a pull rope 8043 uniformly distributed is disposed on the circumferential side of the pressing rod 8042, and one end of the pull rope 8043 away from the top of the pressing rod 8042 passes through the hollow rod 8041 and is connected with the elastic hook rod 803.
Specifically, when the metal net is supported, firstly, the metal net is placed on the supporting plate 4 at the top of the sleeve 3, in the process, constructors pull the supporting rod 8042 upwards, so that the supporting rod 8042 moves upwards in the hollow rod 8041, the supporting rod 8043 drives the bent elastic hook rod 803 to straighten when the supporting rod 8042 moves upwards, the elastic hook rod 803 and the supporting piece 804 penetrate through meshes of the metal net, then the tension force on the supporting rod 8042 is released, the elastic hook rod 803 restores the bent state and hooks the metal net, the follow-up metal net is prevented from slipping when the supporting plate 4 moves upwards, the metal net is prevented from slipping to cause injury to workers and influence the construction progress, the safety of metal net supporting construction is improved, then the hydraulic cylinder 1 is controlled to work, the piston rod 101 of the hydraulic cylinder 1 moves upwards and drives the sleeve 3 to move upwards through the moving block 5 and the first elastic element 301, until the top of the sleeve 3 is in butt joint with a roadway top plate, when the top of the sleeve 3 is in butt joint with the roadway top plate, the supporting piece 804 at the top of the sleeve 3 is in butt joint with the roadway top plate, then the supporting piece 804 is in butt joint with the roadway top plate, the supporting piece 804 is in advance, the supporting piece 804 is in force downwards moves downwards, the moving along with the moving plate 801 is driven by the supporting piece 801, the supporting piece 801 moves downwards, the metal net is prevented from sliding down the follow-up metal net is prevented from sliding along with the supporting plate 801 to slide, the metal net is prevented from sliding down, the follow-up metal net is prevented from sliding down, the metal net to be required to be contracted, the flexible net is prevented from moving down the flexible hook rod 803 to be contracted, and then the flexible hook rod 803 is required to move and the flexible hook rod 803 is moved down and then is not to move and the flexible to move down and move.
Example 5: referring to fig. 1, fig. 2 and fig. 3, a mining portable full-section supporting metal mesh temporary supporting device, on the basis of embodiment 1, further, an adjustable base 2 includes a mounting plate 201 fixedly arranged at the bottom of a hydraulic cylinder 1, a plurality of adjustable supporting legs 202 are circumferentially arranged at the bottom of the mounting plate 201, and a bottom plate 203 is arranged at one end, far away from the mounting plate 201, of the adjustable supporting legs 202.
Specifically, when the device is used, constructors adjust the height of each adjustable supporting leg 202 of the adjustable base 2 according to the flatness of the ground, so that the hydraulic cylinder 1 at the top of the adjustable base 2 is vertically arranged, and the stability of the device for supporting a metal net is ensured.
The invention also discloses a mining portable full-section supporting metal net temporary supporting method, which comprises a mining portable full-section supporting metal net temporary supporting device, and further comprises a supporting method for a roadway top plate in a flat state and a supporting method for the roadway top plate in an uneven bottom inclined state:
the supporting method for the roadway roof in the flat-loading state comprises the following steps: s1: when the device is used, the device is placed in a roadway, constructors adjust the height of each adjustable supporting leg 202 of the adjustable base 2 according to the flatness of the ground, then the adjusted adjustable supporting legs 202 are limited by bolts, the adjustable base 2 is stably placed in the roadway through a bottom plate 203, and a hydraulic cylinder 1 at the top of the adjustable base 2 is vertically placed;
s2: then, a constructor places the metal net on a plane formed by each supporting plate 4 at the top of the sleeve 3, in the process, the constructor pulls up the supporting rod 8042 to enable the supporting rod 8042 to move upwards in the hollow rod 8041, when the supporting rod 8042 moves upwards, the bending elastic hook rod 803 is driven to straighten by the pull rope 8043, the elastic hook rod 803 and the supporting piece 804 conveniently penetrate through meshes of the metal net, then, the pulling force on the supporting rod 8042 is released, the elastic hook rod 803 restores the bending state and hooks the metal net, and the follow-up metal net is prevented from slipping when the supporting plate 4 moves upwards;
s3: then the hydraulic cylinder 1 is controlled to work, the piston rod 101 of the hydraulic cylinder 1 moves upwards and drives the sleeve 3 to move upwards through the moving block 5 and the first elastic element 301 until the top of the sleeve 3 is abutted with the top plate of the roadway;
when the top of the sleeve 3 is abutted against the bottom surface of the tunnel roof, the abutting piece 804 at the top of the sleeve 3 is abutted against the tunnel roof firstly, the abutting piece 804 is stressed to move downwards and drives the moving plate 801 to move downwards in the working pipe 8, the moving plate 801 drives the elastic hook rod 803 to move downwards when moving downwards, the bending amplitude of the elastic hook rod 803 is reduced along with shrinkage into the working pipe 8, and the elastic hook rod 803 does not hook a metal net;
s4: with the continuous operation of the hydraulic cylinder 1, after the sleeve 3 drives the metal net to be abutted against the roadway roof, the sleeve 3 cannot continuously move upwards, the moving block 5 which continuously moves upwards extrudes the first elastic element 301, the first elastic element 301 is stressed to be compressed, and the moving block 5 drives the movable supporting plate 402 to move upwards relative to the fixed supporting plate 401 through the pushing rod 501, so that the movable supporting plate 402 drives the metal net to be abutted against the roadway roof;
s5: when the movable supporting plate 402 drives the metal net to be abutted with the roadway top plate, the longitudinal supporting plate 403 arranged at the end part of the movable supporting plate 402 drives the metal net to be abutted with the roadway top plate, the supporting area of the metal net is further increased, when the longitudinal supporting plate 403 drives the metal net to be abutted with the roadway top plate, the stress block 7 on the longitudinal supporting plate 403 is subjected to the reaction force of the roadway top plate, the stress block 7 is contracted inwards of the working groove 6, the extrusion block 702 at the bottom of the stress block 7 extrudes the stress rod 605, so that the stress rod 605 drives the rotating shaft 601 in the working groove 6 to rotate, and when the rotating shaft 601 rotates, the auxiliary supporting plate 604 is driven to move out of the longitudinal supporting plate 403, and the supporting area of the supporting plate 4 on the metal net is further enlarged;
when the auxiliary supporting plate 604 encounters a blockage in the process of rotating along with the rotating shaft 601, the second plate body 6042 of the auxiliary supporting plate 604 is blocked and cannot rotate along with the rotating shaft 601 and can rotate relative to the first plate body 6041;
s6: after the metal net is temporarily supported, a constructor drives the anchor rod into the area where the metal net is fixed, then the device is restored to the original state, the device is far away from the current anchor rod driving area, and other unsupported metal net areas are sequentially supported and driven.
The supporting method for the roadway roof in the inclined state with uneven bottom comprises the following steps: when the bottom of the tunnel roof is uneven and is in an inclined state, one movable supporting plate 402 at the periphery of the sleeve 3 can drive the metal net to be abutted against the bottom of the lower tunnel roof at first, along with the continuous upward movement of the moving block 5, the movable supporting plate 402 which has driven the metal net to be abutted against the tunnel roof cannot be continuously moved upward under the action of the pushing rod 501, the side pushing rod 501 can drive the sliding block 4023 to slide on the guide rod 4022, the second elastic element 4024 is compressed, and the movable supporting plates 402 in the other directions can be continuously lifted relative to the fixed supporting plate 401 connected with the movable supporting plate under the pushing of the pushing rod 501 until all the movable supporting plates 402 drive the metal net to be attached to the tunnel roof, and the operations of steps S5-S6 are repeated.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a mining portable full section support metal mesh temporary support device, includes hydraulic cylinder (1) of adjustable flexible height, its characterized in that still includes:
the adjustable hydraulic oil cylinder comprises a plurality of adjustable bases (2), wherein the adjustable bases (2) are arranged at the bottom of the hydraulic oil cylinder (1);
the hydraulic oil cylinder comprises a sleeve (3), wherein the sleeve (3) is arranged at the top of the hydraulic oil cylinder (1), and a piston rod (101) of the hydraulic oil cylinder (1) is connected with the sleeve (3); and
the support plates (4) are arranged, and the plurality of support plates (4) are uniformly distributed at the top of the sleeve (3) in a circumferential manner;
an inclination angle adjusting assembly is arranged between the supporting plate (4) and the sleeve (3), and the supporting plate (4) supports the metal net to be attached to the roadway roof;
the inclination angle adjusting assembly comprises a moving block (5) which is slidably connected in a sleeve (3), a first elastic element (301) is arranged between the top of the moving block (5) and the inner wall of the sleeve (3), pushing rods (501) which are in one-to-one correspondence with the supporting plates (4) are uniformly distributed on the circumference side of the moving block (5), one end, far away from the moving block (5), of each pushing rod (501) is movably connected with the supporting plate (4), and a movable groove (302) for the movement of each pushing rod (501) is formed in the sleeve (3);
the supporting plate (4) comprises a fixed supporting plate (401) fixedly connected with the top of the sleeve (3), a movable supporting plate (402) rotatably connected with one end, far away from the sleeve (3), of the fixed supporting plate (401), and a longitudinal supporting plate (403) fixedly arranged at the end part of the movable supporting plate (402);
the utility model discloses a movable pipe structure, including sleeve pipe (3), work pipe (8), movable plate (801) have been connected with in the top of sleeve pipe (3) admittedly, be provided with third elastic element (802) between movable plate (801) and the inner wall of work pipe (8), one side that movable plate (801) deviate from third elastic element (802) is provided with a plurality of elasticity hooked pole (803) that are evenly distributed and offset with the activity of work pipe (8) top, the top of movable plate (801) still is provided with pressure piece (804), the height at pressure piece (804) top is higher than the height of elasticity hooked pole (803).
2. The mining portable full-section supporting metal net temporary supporting device is characterized in that a sliding groove (4021) is formed in the bottom of the movable supporting plate (402), a guide rod (4022) is fixedly arranged in the sliding groove (4021), a sliding block (4023) is connected to the guide rod (4022) in a sliding mode, a second elastic element (4024) is sleeved on the outer side of the guide rod (4022), two ends of the second elastic element (4024) are respectively connected with the sliding block (4023) and the inner wall of the sliding groove (4021), and two ends of the pushing rod (501) are respectively connected with the sliding block (4023) and the moving block (5) in a rotating mode through pin shafts.
3. The mining portable full-section supporting metal net temporary supporting device according to claim 2, wherein working grooves (6) are formed in two sides of each longitudinal supporting plate (403), two rotating shafts (601) are symmetrically connected in each working groove (6) in a rotating mode, connecting plates (602) are fixedly arranged on the outer sides of the rotating shafts (601), first torsion springs (603) with two ends connected with the connecting plates (602) and the inner walls of the working grooves (6) respectively are sleeved on the outer sides of the rotating shafts (601), auxiliary supporting plates (604) are fixedly arranged on the outer sides of the rotating shafts (601), a stress block (7) is connected in the working grooves (6) in a vertically sliding mode, an elastic telescopic rod (701) is arranged between the stress block (7) and the bottom wall of each working groove (6), an extrusion block (702) is fixedly arranged at the bottom of each stress block (7), and a stress rod (605) is movably propped against each extrusion block (702) is arranged on each rotating shaft (601).
4. A mining portable full-face support metal mesh temporary supporting device according to claim 3, wherein the auxiliary supporting plate (604) comprises a first plate body (6041) fixedly connected with the rotating shaft (601) and a second plate body (6042) rotatably connected with the first plate body (6041) through a pin shaft, the pin shaft is sleeved with a second torsion spring (6043), and two supporting legs of the second torsion spring (6043) are respectively propped against the first plate body (6041) and the second plate body (6042).
5. The mining portable full-section supporting metal net temporary supporting device according to claim 4, wherein the pressing piece (804) comprises a hollow rod body (8041) arranged on the moving plate (801) and a pressing rod (8042) which is slidably connected in the hollow rod body (8041), evenly distributed pull ropes (8043) are arranged on the periphery of the pressing rod (8042), and one end, far away from the top of the pressing rod (8042), of each pull rope (8043) penetrates through the hollow rod body (8041) and is connected with an elastic hook rod (803).
6. The mining portable full-section supporting metal net temporary supporting device according to claim 5, wherein the adjustable base (2) comprises a mounting plate (201) fixedly arranged at the bottom of the hydraulic cylinder (1), a plurality of adjustable supporting legs (202) are circumferentially arranged at the bottom of the mounting plate (201), and a bottom plate (203) is arranged at one end, far away from the mounting plate (201), of the adjustable supporting legs (202).
7. The mining portable full-section supporting metal net temporary supporting method comprises the mining portable full-section supporting metal net temporary supporting device, and is characterized by further comprising a supporting method for a roadway top plate in a flat state and a supporting method for the roadway top plate in an uneven bottom and inclined state, wherein the supporting method comprises the following steps:
the supporting method for the roadway roof in the flat-loading state comprises the following steps: s1: when the device is used, the device is placed in a roadway, constructors adjust the height of each adjustable supporting leg (202) of the adjustable base (2) according to the flatness of the ground, and then the adjustable supporting legs (202) after adjustment are limited by bolts, so that the adjustable base (2) is stably placed in the roadway through a bottom plate (203), and a hydraulic cylinder (1) at the top of the adjustable base (2) is vertically placed;
s2: then, a constructor places the metal net on a plane formed by each supporting plate (4) at the top of the sleeve (3), in the process, the constructor pulls up the supporting rods (8042) to enable the supporting rods (8042) to move upwards in the hollow rod bodies (8041), and when the supporting rods (8042) move upwards, the bending elastic hook rods (803) are driven to straighten through the pull ropes (8043), so that the elastic hook rods (803) and the supporting pieces (804) conveniently penetrate through meshes of the metal net, and then, the pulling force on the supporting rods (8042) is released, and the elastic hook rods (803) restore the bending state and hook the metal net to prevent the follow-up metal net from slipping when the supporting plates (4) move upwards;
s3: then controlling the hydraulic oil cylinder (1) to work, wherein a piston rod (101) of the hydraulic oil cylinder (1) moves upwards and drives the sleeve (3) to move upwards through the moving block (5) and the first elastic element (301) until the top of the sleeve (3) is abutted to the roadway roof;
when the top of the sleeve (3) is abutted with the bottom surface of the tunnel top plate, the abutting part (804) at the top of the sleeve (3) is abutted with the tunnel top plate first, the abutting part (804) is stressed to move downwards and drives the moving plate (801) to move downwards in the working pipe (8), the moving plate (801) drives the elastic hook rod (803) to move downwards when moving downwards, the bending amplitude of the elastic hook rod (803) is reduced along with the shrinkage of the elastic hook rod into the working pipe (8), and the elastic hook rod (803) is not hooked on a metal net;
s4: with the continuous operation of the hydraulic cylinder (1), after the sleeve (3) drives the metal net to be abutted against the roadway roof, the sleeve (3) cannot move upwards continuously, the moving block (5) which moves upwards continuously extrudes the first elastic element (301), the first elastic element (301) is compressed under the stress, and the moving block (5) drives the movable supporting plate (402) to move upwards relative to the fixed supporting plate (401) through the pushing rod (501), so that the movable supporting plate (402) drives the metal net to be abutted against the roadway roof;
s5: when the movable supporting plate (402) drives the metal net to be abutted against the roadway top plate, the longitudinal supporting plate (403) arranged at the end part of the movable supporting plate (402) drives the metal net to be attached to the roadway top plate, the supporting area of the metal net can be further increased, when the longitudinal supporting plate (403) drives the metal net to be abutted against the roadway top plate, the stress block (7) on the longitudinal supporting plate (403) receives the reaction force of the roadway top plate, the stress block (7) contracts inwards towards the working groove (6), the extrusion block (702) at the bottom of the stress block (7) extrudes the stress rod (605), so that the stress rod (605) drives the rotating shaft (601) in the working groove (6) to rotate, and the auxiliary supporting plate (604) is driven to move out of the longitudinal supporting plate (403) when the rotating shaft (601) to further enlarge the supporting area of the supporting plate (4) on the metal net;
when the auxiliary supporting plate (604) encounters obstruction in the process of rotating along with the rotating shaft (601), the second plate body (6042) of the auxiliary supporting plate (604) is blocked, can not continue to rotate along with the rotating shaft (601) and can rotate relative to the first plate body (6041);
s6: after the metal net is temporarily supported, a constructor drives an anchor rod into a region where the metal net is fixed, then the device is restored to an original state, the device is far away from the current anchor rod driving region, and other unsupported metal net regions are sequentially supported and driven;
the supporting method for the roadway roof in the inclined state with uneven bottom comprises the following steps: when the bottom of the tunnel roof is uneven and is in an inclined state, one movable supporting plate (402) at the periphery of the sleeve (3) can drive the metal net to be abutted against the bottom of the lower tunnel roof at first, the movable supporting plate (402) which is in butt joint with the metal net and the tunnel roof can not be driven to be continuously moved upwards under the action of the push rod (501) along with the continuous upward movement of the moving block (5), the side push rod (501) can drive the sliding block (4023) to slide on the guide rod (4022), the second elastic element (4024) is compressed, and the movable supporting plates (402) in the other directions can be continuously lifted relative to the fixed supporting plate (401) connected with the movable supporting plate under the pushing of the push rod (501), until all the movable supporting plates (402) drive the metal net to be attached to the tunnel roof, and the operations of steps S5-S6 are repeated.
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| CN202410102188.4A CN117646639B (en) | 2024-01-25 | 2024-01-25 | Mining portable full-section supporting metal net temporary supporting device and method |
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| CN202410102188.4A CN117646639B (en) | 2024-01-25 | 2024-01-25 | Mining portable full-section supporting metal net temporary supporting device and method |
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| CN117646639B true CN117646639B (en) | 2024-04-02 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5240354A (en) * | 1989-05-16 | 1993-08-31 | Ingenieurtechnik Gmbh & Co. Kg | Flexible telescopic prop for building materials |
| CN206439064U (en) * | 2016-12-22 | 2017-08-25 | 淮南矿业(集团)有限责任公司 | A kind of liftable, folding, the machine-carried forepoling device stretched |
| CN110410118A (en) * | 2019-07-29 | 2019-11-05 | 沈阳天安科技股份有限公司 | A kind of novel piercing technique |
| CN211202019U (en) * | 2019-12-30 | 2020-08-07 | 殷跃 | Excavation working face roof protective structure |
| CN212225274U (en) * | 2020-05-04 | 2020-12-25 | 杨国成 | Colliery tunnelling supporting device with adjustable |
| CN113236280A (en) * | 2021-06-25 | 2021-08-10 | 山西天巨重工机械有限公司 | Parallel fast digging matching equipment and method for digging, supporting, anchoring and transporting |
| CN115450671A (en) * | 2022-05-10 | 2022-12-09 | 山东科技大学 | Multi-directional roadway supporting device |
| CN116658216A (en) * | 2023-05-11 | 2023-08-29 | 中煤科工开采研究院有限公司 | Hydraulic support for temporary support of roadway |
| CN117307214A (en) * | 2023-11-03 | 2023-12-29 | 中冶北方（大连）工程技术有限公司 | Underground mine safety support device |
-
2024
- 2024-01-25 CN CN202410102188.4A patent/CN117646639B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5240354A (en) * | 1989-05-16 | 1993-08-31 | Ingenieurtechnik Gmbh & Co. Kg | Flexible telescopic prop for building materials |
| CN206439064U (en) * | 2016-12-22 | 2017-08-25 | 淮南矿业(集团)有限责任公司 | A kind of liftable, folding, the machine-carried forepoling device stretched |
| CN110410118A (en) * | 2019-07-29 | 2019-11-05 | 沈阳天安科技股份有限公司 | A kind of novel piercing technique |
| CN211202019U (en) * | 2019-12-30 | 2020-08-07 | 殷跃 | Excavation working face roof protective structure |
| CN212225274U (en) * | 2020-05-04 | 2020-12-25 | 杨国成 | Colliery tunnelling supporting device with adjustable |
| CN113236280A (en) * | 2021-06-25 | 2021-08-10 | 山西天巨重工机械有限公司 | Parallel fast digging matching equipment and method for digging, supporting, anchoring and transporting |
| CN115450671A (en) * | 2022-05-10 | 2022-12-09 | 山东科技大学 | Multi-directional roadway supporting device |
| CN116658216A (en) * | 2023-05-11 | 2023-08-29 | 中煤科工开采研究院有限公司 | Hydraulic support for temporary support of roadway |
| CN117307214A (en) * | 2023-11-03 | 2023-12-29 | 中冶北方（大连）工程技术有限公司 | Underground mine safety support device |
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| CN117646639A (en) | 2024-03-05 |
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