CN116181380A - Anti-collapse supporting device and supporting method for coal mine tunnel - Google Patents
Anti-collapse supporting device and supporting method for coal mine tunnel Download PDFInfo
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- CN116181380A CN116181380A CN202310009802.8A CN202310009802A CN116181380A CN 116181380 A CN116181380 A CN 116181380A CN 202310009802 A CN202310009802 A CN 202310009802A CN 116181380 A CN116181380 A CN 116181380A
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 40
- 239000003245 coal Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000000670 limiting effect Effects 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 8
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/02—Provisional protective covers for working space for use in longwall working
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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
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/08—Advancing mechanisms
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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 utility model discloses an anti-collapse supporting device and a supporting method thereof for a coal mine tunnel, and relates to the technical field of coal mine tunnel supporting, wherein the anti-collapse supporting device comprises a bottom plate, a top plate is arranged above the bottom plate, two pairs of first connecting rods are arranged on two sides of the top surface of the bottom plate, two pairs of second connecting rods are arranged on two sides of the bottom surface of the top plate, and each first connecting rod is movably hinged with the other corresponding second connecting rod; a pair of L-shaped plates are arranged on two side surfaces of the top plate, a plurality of fixed shafts are inserted into the bottom surface of the top plate, each limiting gear is meshed with a corresponding pair of limiting racks, and the outer end part of each limiting rack is fixedly connected with the corresponding L-shaped plate; the lower part of each L-shaped plate is provided with a side plate. The utility model not only can conveniently adjust the supporting device according to different heights and widths of the roadway, but also further improves the supporting effect of the roadway.
Description
Technical Field
The utility model relates to the technical field of coal mine roadway support, in particular to an anti-collapse support device and a support method for a coal mine roadway.
Background
The utility model discloses a coal mine roadway rock-soil reinforcing collapse preventing device (publication number: CN 211777515U), which comprises four bases, wherein two bases on the same side are in a group, the upper ends of the bases are respectively provided with a fixed groove and a limiting groove, limiting rods are arranged in the limiting grooves, fixed plates are jointly fixed on opposite sides of the two limiting rods on the same side, fixed rods are arranged in the fixed grooves, and the upper ends of the fixed rods are provided with adjusting devices.
The existing supporting device has the defects that: 1. the method is not suitable for roadways with different heights, the deformation problem that the top plate is sunk frequently occurs in the roadways, the lifting height of the top plate is inconvenient to adjust, and the phenomenon of poor supporting effect is caused; 2. because the supporting area of the top plate is effective, the supporting area of the top wall cannot be adjusted according to the width of a roadway, the active supporting effect is difficult to play, the pressure resistance of the top plate is limited, and collapse events still easily occur.
Disclosure of Invention
The utility model aims to solve the defects of inconvenient adjustment and poor supporting effect of a roadway supporting device in the prior art, and provides a coal mine roadway collapse-preventing supporting device.
In order to solve the problems of inconvenient adjustment and poor supporting effect of a roadway supporting device in the prior art, the utility model adopts the following technical scheme:
the coal mine roadway collapse-preventing supporting device comprises a bottom plate, bearing rollers are arranged at four corners of the bottom surface of the bottom plate, a top plate which is placed in parallel is arranged above the bottom plate, two pairs of first connecting rods which are arranged in a staggered mode and are movably hinged are arranged on two sides of the top surface of the bottom plate, two pairs of second connecting rods which are arranged in a staggered mode and are movably hinged are arranged on two sides of the bottom surface of the top plate, each first connecting rod is placed in parallel with the corresponding second connecting rod, and the top end of each first connecting rod is movably hinged with the bottom end of the other corresponding second connecting rod;
the two side surfaces of the top plate are provided with symmetrically arranged L-shaped plates, the bottom surface of the top plate is provided with a plurality of circular grooves which are distributed at equal intervals, the middle part in each circular groove is inserted with a fixed shaft which is connected in a rotating way, and each fixed shaft is sleeved with a limiting gear which is fixedly connected in a concentric way; a pair of rectangular sliding holes transversely penetrating through the top plate are formed in the front side and the rear side of each circular groove, a pair of staggered limiting racks which penetrate through the rectangular sliding holes in a sliding mode are inserted into each pair of rectangular sliding holes, each limiting gear is connected with a corresponding pair of limiting racks in a meshed mode, the outer end portion of each limiting rack is fixedly connected with a corresponding L-shaped plate, a plurality of staggered rectangular sliding grooves are formed in the opposite faces of the corresponding L-shaped plate, and the other end portion of each limiting rack is inserted into the corresponding rectangular sliding groove in a sliding mode;
every the below of L shaped plate all is equipped with the curb plate of vertical placing, every both ends all set firmly single ear seat around the bottom of L shaped plate, every both ends all set firmly around the top of curb plate location axle, every the outer end of location axle all runs through corresponding single ear seat and rotates with single ear seat to be connected.
Preferably, a pair of parallel hinged connecting rods which are coaxially and movably hinged are arranged at the hinged positions of the first connecting rod and the second connecting rod, and the outer end parts of the pair of hinged connecting rods are respectively and movably hinged with the middle parts of the corresponding first connecting rod and the second connecting rod;
the four corners of the top surface of the bottom plate are respectively provided with a first ear seat, and each first ear seat is movably hinged with the bottom end part of the corresponding first connecting rod through a first pin shaft;
and second ear seats are arranged at four corners of the bottom surface of the top plate, and each second ear seat is movably hinged with the top end part of the corresponding second connecting rod through a second pin shaft.
Preferably, a rectangular notch is formed in the middle of the rear side surface of the bottom plate, a swinging shaft which is transversely placed is arranged above the rectangular notch, two end parts of the swinging shaft are fixedly connected with the bottom end parts of a corresponding pair of first connecting rods, a swinging block which is fixedly connected is sleeved in the middle of the swinging shaft, and an elliptical pin hole is formed in the middle lower part of the swinging block.
Preferably, the bottom end parts of the pair of fixed shafts extend downwards and are fixedly provided with double-headed cranks, two end parts of each double-headed crank are respectively provided with a movable hinged crank connecting rod, the outer end parts of each crank connecting rod are respectively provided with a movable hinged seat, and each hinged seat is fixedly connected with the inner top wall of the corresponding L-shaped plate.
Preferably, driven gears which are concentrically fixedly connected are sleeved at the middle parts of the pair of fixed shafts, the pair of driven gears are in one-to-one correspondence with the pair of double-headed cranks, a linkage rack which is in sliding connection with the top plate is arranged on one side of the pair of driven gears, and the linkage rack is sequentially meshed and connected with the pair of driven gears.
Preferably, an L-shaped bracket is arranged on the bottom surface of the top plate, a servo motor with an upward output end is arranged on the bottom end part of the L-shaped bracket, the end part of a motor shaft of the servo motor is coaxially connected with a fixed shaft positioned in the middle, a driving gear which is concentrically fixedly connected is sleeved in the middle of the fixed shaft positioned in the middle, and the driving gear is meshed and connected with a linkage rack.
Preferably, an elliptical ring is fixedly arranged on the outer side surface of the linkage rack, an elliptical pin shaft in sliding connection is clamped in the middle of the elliptical ring, the bottom end part of the elliptical pin shaft is fixedly connected with an L-shaped connecting block, and the top end part of the L-shaped connecting block is fixedly connected with the bottom surface of the top plate.
Preferably, the outer tip of every the locating shaft all overlaps and is equipped with the positioning gear of concentric rigid coupling, the second pneumatic cylinder that the output is down is all installed to the front and back both sides wall of L shaped plate, every the hydraulic telescoping rod tip of second pneumatic cylinder has all set firmly L shape rack, every L shape rack all is connected with the positioning gear meshing that corresponds.
The utility model also provides a supporting method of the coal mine tunnel collapse-preventing supporting device, which comprises the following steps:
pushing a bearing roller, moving a bottom plate to the middle part in a coal mine tunnel, controlling a hydraulic telescopic rod of a first hydraulic cylinder to slowly shorten, further driving a U-shaped bracket to inwards slide along a rectangular notch, forming a limiting effect by a swing pin shaft and an elliptical pin hole, and driving a swing block and a swing shaft to swing in a hinged manner;
step two, when the swing shaft swings, a pair of first connecting rods are driven to synchronously hinge and rotate, and as the hinged connecting rods, the corresponding first connecting rods and the corresponding second connecting rods form a parallelogram, under the cooperation of the hinging action, the second connecting rods are driven to synchronously hinge and rotate through the hinged connecting rods, so that the top plate, the pair of L-shaped plates and the pair of side plates are driven to slowly rise, and the top plate is driven to upwards prop against the middle part of the inner top wall of the coal mine tunnel;
step three, controlling a motor shaft of a servo motor to drive a driving gear to synchronously rotate, wherein the driving gear is meshed to drive a linkage rack and an elliptical ring to slide along an elliptical pin shaft, and the linkage rack is synchronously meshed to drive a pair of driven gears to rotate;
step four, when a pair of driven gears rotate, a double-end crank is driven to synchronously rotate, a pair of L-shaped plates are driven to synchronously and outwards translate through a crank connecting rod, a plurality of fixed shafts and limiting gears synchronously rotate, and the limiting gears are meshed to drive a pair of limiting racks to alternately slide along rectangular sliding holes so as to drive a pair of L-shaped plates to outwards prop against the tops of two side walls in a coal mine roadway;
and fifthly, synchronously starting the second hydraulic cylinders on two sides, slowly extending the hydraulic telescopic rods of the second hydraulic cylinders, driving the L-shaped racks to slowly slide downwards, and driving the pair of side plates to outwards hinge and spread along the single lug seat under the meshing action of the L-shaped racks and the positioning gears, so that the pair of side plates outwards prop against two side walls of the coal mine roadway.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the top plate is driven to upwards prop against the middle part of the inner top wall of the coal mine tunnel by the combined action of the first connecting rod, the second connecting rod and the hinged connecting rod, so that the top plate can be suitable for supporting tunnels with different heights, and the height of the top plate can be adjusted in a lifting manner according to the heights of the top plate, thereby effectively improving the use safety;
2. according to the utility model, through the combined action of the double-head crank and the crank connecting rod, a pair of L-shaped plates are driven to outwards prop against the tops of two side walls in a coal mine tunnel, the supporting area of the top wall can be adjusted according to the width of the tunnel, so that the supporting area of the top wall of the tunnel is increased, the supporting pressure of the top wall of the tunnel is shared, the supporting effect is effectively improved, the life safety of workers is ensured, and the use safety is higher;
in summary, the utility model solves the problems of inconvenient adjustment and poor supporting effect of the existing roadway supporting device, has compact overall structural design, can conveniently adjust the supporting device according to the height and width of the roadway, and further improves the supporting effect of the roadway.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic diagram of a front view of the present utility model;
FIG. 2 is a right side view of the present utility model;
FIG. 3 is a schematic rear view of the present utility model;
FIG. 4 is a schematic view of the bottom structure of the present utility model;
FIG. 5 is a schematic cross-sectional view of a right-side view of the present utility model;
FIG. 6 is a schematic view of the connection of the L-shaped handle to the side panel structure of the present utility model;
FIG. 7 is a bottom view of a pair of L-shaped panels and a top panel according to the present utility model;
FIG. 8 is a schematic diagram of a double-ended crank and crank connecting rod configuration of the present utility model;
FIG. 9 is a schematic diagram of a linked rack engagement of the present utility model;
FIG. 10 is a schematic view of a rack-limiting engagement of the present utility model;
FIG. 11 is an enlarged view of FIG. 8A in accordance with the present utility model;
FIG. 12 is a schematic view of the U-shaped bracket and swing block of the present utility model;
FIG. 13 is a schematic illustration of a support method of the present utility model;
number in the figure: 1. a bottom plate; 11. a first link; 12. a second link; 13. a hinged connecting rod; 14. a swing shaft; 15. a swinging block; 16. a first hydraulic cylinder; 17. a U-shaped bracket; 18. swinging the pin shaft; 2. a top plate; 21. a fixed shaft; 22. a limit gear; 23. a limit rack; 24. a drive gear; 25. a driven gear; 26. a linkage rack; 27. an elliptical ring; 28. an elliptical pin shaft; 29. l-shaped connecting blocks; 3. an L-shaped plate; 31. an L-shaped bracket; 32. a servo motor; 33. a double-ended crank; 34. a crank connecting rod; 4. a side plate; 41. a single ear seat; 42. positioning gears; 43. a second hydraulic cylinder; 44. an L-shaped rack.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments.
Embodiment one: 1-12, specifically, the anti-collapse supporting device for the coal mine roadway comprises a bottom plate 1, wherein bearing rollers are arranged at four corners of the bottom surface of the bottom plate 1, a top plate 2 which is arranged in parallel is arranged above the bottom plate 1, two pairs of first connecting rods 11 which are arranged in a staggered mode and are movably hinged are arranged on two sides of the top surface of the bottom plate 1, two pairs of second connecting rods 12 which are arranged in a staggered mode and are movably hinged are arranged on two sides of the bottom surface of the top plate 2, each first connecting rod 11 is arranged in parallel with the corresponding second connecting rod 12, and the top end of each first connecting rod 11 is movably hinged with the bottom end of the other corresponding second connecting rod 12;
the two side surfaces of the top plate 2 are provided with symmetrically arranged L-shaped plates 3, the bottom surface of the top plate 2 is provided with a plurality of circular grooves which are distributed at equal intervals, the middle part in each circular groove is inserted with a fixed shaft 21 which is connected in a rotating way, and each fixed shaft 21 is sleeved with a limiting gear 22 which is fixedly connected in a concentric way; a pair of rectangular sliding holes transversely penetrating through the top plate 2 are formed in the front side and the rear side of each circular groove, a pair of staggered limiting racks 23 penetrating through the rectangular sliding holes in a sliding mode are inserted into each pair of rectangular sliding holes, each limiting gear 22 is in meshed connection with a corresponding pair of limiting racks 23, the outer end portion of each limiting rack 23 is fixedly connected with a corresponding L-shaped plate 3, a plurality of rectangular sliding grooves which are distributed in a staggered mode are formed in the opposite faces of the corresponding L-shaped plate 3, and the other end portion of each limiting rack 23 is inserted into the corresponding rectangular sliding groove in a sliding mode;
the below of every L shaped plate 3 all is equipped with the curb plate 4 of vertical placing, and both ends all set firmly monaural seat 41 around the bottom of every L shaped plate 3, and both ends all set firmly the locating shaft around the top of every curb plate 4, and the outer end of every locating shaft all runs through corresponding monaural seat 41 and rotates with monaural seat 41 to be connected.
In the specific implementation process, as shown in fig. 8 and 9, the middle parts of the pair of fixed shafts 21 are respectively sleeved with a driven gear 25 which is concentrically and fixedly connected, the pair of driven gears 25 are in one-to-one correspondence with the pair of double-headed cranks 33, one side of the pair of driven gears 25 is provided with a linkage rack 26 which is in sliding connection with the top plate 2, and the linkage rack 26 is sequentially meshed and connected with the pair of driven gears 25; when the linkage rack 26 slides, the linkage rack 26 is meshed to drive a pair of driven gears 25 to rotate;
the bottom ends of the pair of fixed shafts 21 extend downwards and are fixedly provided with double-headed cranks 33, two end parts of each double-headed crank 33 are respectively provided with a movably hinged crank connecting rod 34, the outer end part of each crank connecting rod 34 is respectively provided with a movably hinged seat, and each seat hinged seat is fixedly connected with the inner top wall of the corresponding L-shaped plate 3; when the driven gears 25 rotate, the double-end cranks 33 are driven to synchronously rotate, and then the crank connecting rods 34 drive the L-shaped plates 3 to synchronously translate outwards.
The description is as follows: in the embodiment, an L-shaped bracket 31 is arranged on the bottom surface of the top plate 2, a servo motor 32 with an upward output end is arranged on the bottom end part of the L-shaped bracket 31, the end part of a motor shaft of the servo motor 32 is coaxially connected with a fixed shaft 21 positioned in the middle, a driving gear 24 concentrically fixedly connected is sleeved in the middle of the fixed shaft 21 positioned in the middle, and the driving gear 24 is meshed and connected with a linkage rack 26; the motor shaft of the control servo motor 32 drives the driving gear 24 to synchronously rotate, and the driving gear 24 is meshed to drive the linkage rack 26 and the elliptical ring 27 to slide along the elliptical pin shaft 28;
an elliptical ring 27 is fixedly arranged on the outer side surface of the linkage rack 26, an elliptical pin shaft 28 in sliding connection is clamped in the middle of the elliptical ring 27, the bottom end part of the elliptical pin shaft 28 is fixedly connected with an L-shaped connecting block 29, and the top end part of the L-shaped connecting block 29 is fixedly connected with the bottom surface of the top plate 2.
Embodiment two: in the first embodiment, there is also a problem that the lifting adjustment of the top plate 2 is inconvenient, and therefore, the present embodiment further includes, on the basis of the first embodiment:
in the specific implementation process, as shown in fig. 1 and 5, a pair of hinge connecting rods 13 which are arranged in parallel and coaxially and movably hinged are arranged at the hinge positions of the first connecting rod 11 and the second connecting rod 12, and the outer end parts of the pair of hinge connecting rods 13 are respectively and movably hinged with the middle parts of the corresponding first connecting rod 11 and the second connecting rod 12;
the four corners of the top surface of the bottom plate 1 are respectively provided with a first ear seat, and each first ear seat is movably hinged with the bottom end part of the corresponding first connecting rod 11 through a first pin shaft; the four corners of the bottom surface of the top plate 2 are respectively provided with a second ear seat, and each second ear seat is movably hinged with the top end part of the corresponding second connecting rod 12 through a second pin shaft;
when the swinging shaft 14 swings, the pair of first connecting rods 11 is driven to synchronously hinge and rotate, the second connecting rods 12 are driven to synchronously hinge and rotate through the hinge connecting rods 13, and then the top plate 2, the pair of L-shaped plates 3 and the pair of side plates 4 are driven to slowly rise, and the top plate 2 is driven to upwards prop against the middle part of the inner top wall of the coal mine tunnel.
Embodiment III: in the second embodiment, there is also a problem that the swing shaft 14 is not easy to swing, and therefore, the present embodiment further includes, on the basis of the second embodiment:
in the specific implementation process, as shown in fig. 3 and 12, a circular groove is formed in the middle of the inner side wall of the rectangular notch, a first hydraulic cylinder 16 is installed in the circular groove, a U-shaped support 17 is fixedly arranged at the end part of a hydraulic telescopic rod of the first hydraulic cylinder 16, the outer side wall of the U-shaped support 17 is in sliding connection with the inner wall of the rectangular notch, a swing pin shaft 18 is fixedly arranged at the opening of the U-shaped support 17, and the middle part of the swing pin shaft 18 is slidably penetrated in the elliptical pin hole; the hydraulic telescopic rod of the first hydraulic cylinder 16 is controlled to be slowly shortened, and then the U-shaped bracket 17 is driven to slide inwards along the rectangular notch;
a rectangular notch is formed in the middle of the rear side surface of the bottom plate 1, a transversely placed swinging shaft 14 is arranged above the rectangular notch, two end parts of the swinging shaft 14 are fixedly connected with the bottom end parts of a corresponding pair of first connecting rods 11, a swinging block 15 which is fixedly connected is sleeved in the middle of the swinging shaft 14, and an elliptical pin hole is formed in the middle lower part of the swinging block 15; the swing pin shaft 18 and the elliptical pin hole form a limiting function and drive the swing block 15 and the swing shaft 14 to swing in a hinged mode.
Embodiment four: in the first embodiment, there is also a problem that the pair of side plates 4 are inconvenient to be unfolded, and therefore, the present embodiment further includes, on the basis of the first embodiment:
in the specific implementation process, as shown in fig. 1 and 6, the outer end part of each positioning shaft is sleeved with a positioning gear 42 concentrically fixedly connected, the front and rear side walls of the L-shaped plate 3 are respectively provided with a second hydraulic cylinder 43 with a downward output end, the end part of a hydraulic telescopic rod of each second hydraulic cylinder 43 is fixedly provided with an L-shaped rack 44, and each L-shaped rack 44 is in meshed connection with the corresponding positioning gear 42;
the hydraulic telescopic rod of the second hydraulic cylinder 43 is synchronously controlled to slowly extend, the L-shaped rack 44 is driven to slowly slide downwards, and the meshing effect of the L-shaped rack 44 and the positioning gear 42 drives the pair of side plates 4 to outwards hinge and unfold along the monaural seat 41, so that the pair of side plates 4 outwards prop against the two side walls of the coal mine roadway.
Fifth embodiment: referring to fig. 13, the working principle and the operation method of the present utility model are as follows:
pushing a bearing roller, moving a bottom plate 1 to the middle part in a coal mine tunnel, controlling a hydraulic telescopic rod of a first hydraulic cylinder 16 to be slowly shortened, further driving a U-shaped bracket 17 to inwards slide along a rectangular notch, forming a limiting effect by a swing pin shaft 18 and an elliptic pin hole, and driving a swing block 15 and a swing shaft 14 to swing in a hinged manner;
step two, when the swinging shaft 14 swings, a pair of first connecting rods 11 are driven to synchronously hinge and rotate, and as the hinged connecting rods 13, the corresponding first connecting rods 11 and second connecting rods 12 form a parallelogram, under the cooperation of the hinging action, the second connecting rods 12 are driven to synchronously hinge and rotate by the hinged connecting rods 13, so that the top plate 2, the pair of L-shaped plates 3 and the pair of side plates 4 are driven to slowly rise, and the top plate 2 is driven to upwards prop against the middle part of the inner top wall of a coal mine tunnel;
step three, controlling a motor shaft of a servo motor 32 to drive a driving gear 24 to synchronously rotate, wherein the driving gear 24 is meshed with a linkage rack 26 and an elliptical ring 27 to slide along an elliptical pin shaft 28, and the linkage rack 26 is synchronously meshed with a pair of driven gears 25 to rotate;
step four, when the driven gears 25 rotate, the double-headed crank 33 is driven to synchronously rotate, the crank connecting rod 34 drives the L-shaped plates 3 to synchronously translate outwards, the fixed shafts 21 and the limiting gears 22 synchronously rotate, and the limiting gears 22 are meshed to drive the limiting racks 23 to alternately slide along the rectangular sliding holes to drive the L-shaped plates 3 to outwards prop against the tops of two side walls in the coal mine tunnel;
step five, the second hydraulic cylinders 43 on two sides are synchronously started, the hydraulic telescopic rods of the second hydraulic cylinders 43 slowly extend to drive the L-shaped racks 44 to slowly slide downwards, and the meshing effect of the L-shaped racks 44 and the positioning gears 42 drives the pair of side plates 4 to outwards hinge and spread along the monaural seat 41, so that the pair of side plates 4 outwards prop against two side walls of a coal mine roadway.
The utility model solves the problems of inconvenient adjustment and poor supporting effect of the existing roadway supporting device, has compact overall structural design, can conveniently adjust the supporting device according to the height and width of the roadway, and further improves the supporting effect of the roadway.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (9)
1. Colliery tunnel anti-collapse supporting device, including bottom plate (1), its characterized in that: the four corners of the bottom surface of the bottom plate (1) are provided with bearing rollers, a top plate (2) which is placed in parallel is arranged above the bottom plate (1), two pairs of first connecting rods (11) which are arranged in a staggered mode and are movably hinged are arranged on two sides of the top surface of the bottom plate (1), two pairs of second connecting rods (12) which are arranged in a staggered mode and are movably hinged are arranged on two sides of the bottom surface of the top plate (2), each first connecting rod (11) is placed in parallel with the corresponding second connecting rod (12), and the top end of each first connecting rod (11) is movably hinged with the bottom end of the other corresponding second connecting rod (12);
the two side surfaces of the top plate (2) are provided with symmetrically arranged L-shaped plates (3), the bottom surface of the top plate (2) is provided with a plurality of circular grooves which are distributed at equal intervals, the middle part in each circular groove is inserted with a fixed shaft (21) which is connected in a rotating way, and each fixed shaft (21) is sleeved with a limiting gear (22) which is fixedly connected in a concentric way; a pair of rectangular sliding holes transversely penetrating through the top plate (2) are formed in the front side and the rear side of each circular groove, a pair of staggered limiting racks (23) penetrating through the rectangular sliding holes in a sliding mode are inserted into each pair of rectangular sliding holes, each limiting gear (22) is meshed with a corresponding pair of limiting racks (23), the outer end portion of each limiting rack (23) is fixedly connected with a corresponding L-shaped plate (3), a plurality of staggered rectangular sliding grooves are formed in the opposite faces of the corresponding L-shaped plate (3), and the other end portion of each limiting rack (23) is inserted into the corresponding rectangular sliding groove in a sliding mode;
every L shaped plate (3) below all is equipped with curb plate (4) of vertical placing, every L shaped plate (3) both ends all set firmly monaural seat (41) around the bottom, every both ends all set firmly around the top of curb plate (4) location axle, every the outer end of location axle all runs through corresponding monaural seat (41) and rotates with monaural seat (41) to be connected.
2. The coal mine roadway collapse prevention support device according to claim 1, wherein: a pair of hinge connecting rods (13) which are arranged in parallel and coaxially and movably hinged are arranged at the hinge positions of the first connecting rod (11) and the second connecting rod (12), and the outer end parts of the pair of hinge connecting rods (13) are respectively and movably hinged with the middle parts of the corresponding first connecting rod (11) and second connecting rod (12);
the four corners of the top surface of the bottom plate (1) are respectively provided with a first ear seat, and each first ear seat is movably hinged with the bottom end part of the corresponding first connecting rod (11) through a first pin shaft;
the four corners of the bottom surface of the top plate (2) are respectively provided with a second ear seat, and each second ear seat is movably hinged with the top end part of the corresponding second connecting rod (12) through a second pin shaft.
3. The coal mine roadway collapse prevention support device according to claim 1, wherein: rectangular notches are formed in the middle of the rear side face of the bottom plate (1), a swinging shaft (14) which is transversely placed is arranged above the rectangular notches, two end parts of the swinging shaft (14) are fixedly connected with the bottom end parts of a pair of corresponding first connecting rods (11), a swinging block (15) which is fixedly connected is sleeved in the middle of the swinging shaft (14), and an elliptical pin hole is formed in the middle lower part of the swinging block (15).
4. The coal mine roadway collapse prevention support device according to claim 1, wherein: the bottom end parts of the pair of fixed shafts (21) extend downwards and are fixedly provided with double-headed cranks (33), two end parts of each double-headed crank (33) are respectively provided with a movable hinged crank connecting rod (34), the outer end parts of each crank connecting rod (34) are respectively provided with a movable hinged seat, and each hinged seat is fixedly connected with the inner top wall of the corresponding L-shaped plate (3).
5. The coal mine roadway collapse prevention support device of claim 4, wherein: the middle parts of the pair of fixed shafts (21) are respectively sleeved with a driven gear (25) which is concentrically fixedly connected, the pair of driven gears (25) are in one-to-one correspondence with the pair of double-head cranks (33), one side of each driven gear (25) is provided with a linkage rack (26) which is in sliding connection with the top plate (2), and the linkage racks (26) are sequentially meshed and connected with the pair of driven gears (25).
6. The coal mine roadway collapse prevention support device of claim 5, wherein: an L-shaped bracket (31) is arranged on the bottom surface of the top plate (2), a servo motor (32) with an upward output end is arranged on the bottom end part of the L-shaped bracket (31), the end part of a motor shaft of the servo motor (32) is coaxially connected with a fixed shaft (21) positioned in the middle, a driving gear (24) concentrically fixedly connected with the middle of the fixed shaft (21) is sleeved on the middle of the fixed shaft (21), and the driving gear (24) is meshed and connected with a linkage rack (26).
7. The coal mine roadway collapse prevention support device of claim 5, wherein: an elliptical ring (27) is fixedly arranged on the outer side face of the linkage rack (26), an elliptical pin shaft (28) in sliding connection is clamped in the middle of the elliptical ring (27), the bottom end portion of the elliptical pin shaft (28) is fixedly connected with an L-shaped connecting block (29), and the top end portion of the L-shaped connecting block (29) is fixedly connected with the bottom face of the top plate (2).
8. The coal mine roadway collapse prevention support device according to claim 1, wherein: every the outer tip of location axle all overlaps and is equipped with concentric rigid coupling's positioning gear (42), second pneumatic cylinder (43) with the output down are all installed to the front and back both sides wall of L shaped board (3), every the hydraulic telescoping rod tip of second pneumatic cylinder (43) all has set firmly L shape rack (44), every L shape rack (44) all is connected with corresponding positioning gear (42) meshing.
9. The method for supporting the coal mine tunnel collapse prevention supporting device according to any one of claims 1 to 8, comprising the steps of:
pushing a bearing roller, moving a bottom plate (1) to the middle part in a coal mine tunnel, controlling a hydraulic telescopic rod of a first hydraulic cylinder (16) to be shortened slowly, further driving a U-shaped bracket (17) to slide inwards along a rectangular notch, forming a limiting effect by a swing pin shaft (18) and an elliptical pin hole, and driving a swing block (15) and a swing shaft (14) to swing in a hinged manner;
step two, when the swinging shaft (14) swings, a pair of first connecting rods (11) are driven to synchronously hinge and rotate, and as the hinged connecting rods (13) form a parallelogram with the corresponding first connecting rods (11) and second connecting rods (12), the second connecting rods (12) are driven to synchronously hinge and rotate through the hinged connecting rods (13) under the cooperation of the hinging action, so that the top plate (2), the pair of L-shaped plates (3) and the pair of side plates (4) are driven to slowly rise, and the top plate (2) is driven to upwards prop against the middle part of the inner top wall of the coal mine roadway;
step three, controlling a motor shaft of a servo motor (32) to drive a driving gear (24) to synchronously rotate, wherein the driving gear (24) is meshed to drive a linkage rack (26) and an elliptical ring (27) to slide along an elliptical pin shaft (28), and the linkage rack (26) is synchronously meshed to drive a pair of driven gears (25) to rotate;
step four, when a pair of driven gears (25) rotate, a double-end crank (33) is driven to synchronously rotate, a pair of L-shaped plates (3) are driven to synchronously and outwards translate through a crank connecting rod (34), a plurality of fixed shafts (21) and limiting gears (22) synchronously rotate, and the limiting gears (22) are meshed to drive a pair of limiting racks (23) to alternately slide along rectangular sliding holes, so that a pair of L-shaped plates (3) are driven to outwards prop against the tops of two side walls in a coal mine roadway;
step five, synchronously starting the second hydraulic cylinders (43) at two sides, slowly extending the hydraulic telescopic rods of the second hydraulic cylinders (43) to drive the L-shaped racks (44) to slowly slide downwards, and driving the pair of side plates (4) to outwards hinge and spread along the monaural seat (41) under the meshing action of the L-shaped racks (44) and the positioning gears (42) so that the pair of side plates (4) outwards prop against two side walls of a coal mine roadway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310009802.8A CN116181380A (en) | 2023-01-04 | 2023-01-04 | Anti-collapse supporting device and supporting method for coal mine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310009802.8A CN116181380A (en) | 2023-01-04 | 2023-01-04 | Anti-collapse supporting device and supporting method for coal mine tunnel |
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| CN116181380A true CN116181380A (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310009802.8A Pending CN116181380A (en) | 2023-01-04 | 2023-01-04 | Anti-collapse supporting device and supporting method for coal mine tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575965A (en) * | 2023-07-14 | 2023-08-11 | 山西联盛科技有限公司 | Collapse-preventing tunnel refuge protection equipment and protection method thereof |
| CN117868923A (en) * | 2024-03-07 | 2024-04-12 | 山西宏厦第一建设有限责任公司 | Advanced support equipment for coal mine underground roadway tunneling and support method thereof |
| CN118273349A (en) * | 2024-05-31 | 2024-07-02 | 山西省水利建筑工程局集团有限公司 | Temporary supporting structure of steel sheet pile and supporting method thereof |
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2023
- 2023-01-04 CN CN202310009802.8A patent/CN116181380A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116575965A (en) * | 2023-07-14 | 2023-08-11 | 山西联盛科技有限公司 | Collapse-preventing tunnel refuge protection equipment and protection method thereof |
| CN116575965B (en) * | 2023-07-14 | 2023-09-19 | 山西联盛科技有限公司 | Collapse-preventing tunnel refuge protection equipment and protection method thereof |
| CN117868923A (en) * | 2024-03-07 | 2024-04-12 | 山西宏厦第一建设有限责任公司 | Advanced support equipment for coal mine underground roadway tunneling and support method thereof |
| CN117868923B (en) * | 2024-03-07 | 2024-05-14 | 山西宏厦第一建设有限责任公司 | Advanced support equipment for coal mine underground roadway tunneling and support method thereof |
| CN118273349A (en) * | 2024-05-31 | 2024-07-02 | 山西省水利建筑工程局集团有限公司 | Temporary supporting structure of steel sheet pile and supporting method thereof |
| CN118273349B (en) * | 2024-05-31 | 2024-08-20 | 山西省水利建筑工程局集团有限公司 | Temporary supporting structure of steel sheet pile and supporting method thereof |
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