CN112761697A - Hydraulic support withdrawing device and withdrawing method - Google Patents
Hydraulic support withdrawing device and withdrawing method Download PDFInfo
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- CN112761697A CN112761697A CN202011628904.0A CN202011628904A CN112761697A CN 112761697 A CN112761697 A CN 112761697A CN 202011628904 A CN202011628904 A CN 202011628904A CN 112761697 A CN112761697 A CN 112761697A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 18
- 238000005065 mining Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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Abstract
The invention discloses a hydraulic support withdrawing device and a withdrawing method, wherein the hydraulic support withdrawing device comprises at least one withdrawing support, a withdrawing shield support and a withdrawing support cantilever, the withdrawing shield support is arranged at the mining side of the withdrawing support, the withdrawing support cantilever is arranged at the coal wall side of the withdrawing support, the withdrawing support comprises a first top beam, a withdrawing base and a first top beam supporting mechanism, the tail beam, tail beam supporting mechanism and third power component, first back timber supporting mechanism is used for controlling the height of first back timber, the tail beam is articulated with first back timber, tail beam supporting mechanism is used for controlling the oscillating position of tail beam, third power component links to each other and is used for controlling the distance between the front end of withdrawal base and the bottom plate with the withdrawal base, withdrawal shield support includes the second back timber, shields base and second back timber supporting mechanism, second back timber supporting mechanism is used for controlling the height of second back timber. The hydraulic support withdrawing device can improve the withdrawing speed of the hydraulic support, reduce the labor intensity and improve the production efficiency and the safety.
Description
Technical Field
The invention relates to the technical field of coal mine equipment, in particular to a hydraulic support withdrawing device and a hydraulic support withdrawing method.
Background
The removal of the hydraulic support equipment of the fully mechanized coal mining face is an essential link in the coal mining process, the hydraulic supports for supporting the top plate of the face are large in quantity, the total weight of the hydraulic supports accounts for more than 80% of the weight of the whole face equipment, and the removal of the hydraulic supports occupies a leading position in measurement and difficulty in the removal work of the whole face equipment.
In the related technology, a working face hydraulic support is directly used as a withdrawing support to support the top plate of the withdrawing operation area, and as the moving stroke of the support is far smaller than the width of the support, the withdrawing support needs to be moved to the place at least twice when a target support is withdrawn, so that the supporting operation time is increased, and the roof plate of the withdrawing operation area is not easy to maintain after multiple times of frame moving; the hydraulic support is withdrawn by means of a winch and a steel wire rope, and the steel wire rope is easy to stretch, break, fly and slide, so that great potential safety hazards exist, the labor intensity is high, the withdrawing speed is low, the working efficiency is low, and the potential safety hazards exist.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides a hydraulic support withdrawing device which can improve the withdrawing and moving speed of a hydraulic support, reduce the labor intensity of workers, improve the production efficiency and enhance the production safety.
The embodiment of the invention also provides a hydraulic support removing method.
A hydraulic support retracting device according to an embodiment of a first aspect of the present invention is a hydraulic support retracting device for retracting a target support of a work surface, the hydraulic support retracting device including: the mining shield comprises at least one withdrawing support, a withdrawing shield support and a withdrawing support cantilever, wherein the withdrawing shield support is arranged on the mining side of the withdrawing support, the withdrawing support cantilever is arranged on the coal wall side of the withdrawing support, the withdrawing support and the withdrawing shield support are used for withdrawing the support of the top plate of the operation area, and the withdrawing support cantilever is used for withdrawing a target support at the front end of the withdrawing support in the moving direction from the current position; the withdrawing support comprises a first top beam, a withdrawing base, a first top beam supporting mechanism, a tail beam and a tail beam supporting mechanism, the withdrawing base is in contact with the bottom plate, the first top beam supporting mechanism is arranged between the first top beam and the withdrawing base and used for controlling the height of the first top beam, the tail beam is hinged with the first top beam and arranged between the tail beam and the withdrawing base, and the tail beam supporting mechanism is used for controlling the swinging position of the tail beam; the retracting shield support comprises a second top beam, a shield base and a second top beam supporting mechanism, the shield base is in contact with the bottom plate, the second top beam supporting mechanism is arranged between the second top beam and the shield base, and the second top beam supporting mechanism is used for controlling the height of the second top beam; the pushing cross beam is connected with the withdrawing support and is arranged at the front end of the moving direction of the withdrawing support;
in some embodiments, the first top beam supporting mechanism includes a plurality of first telescopic members, two ends of the plurality of first telescopic members are respectively connected to the first top beam and the retracting base, and the plurality of first telescopic members are transversely spaced in a direction orthogonal to a moving direction of the retracting device.
In some embodiments, the withdrawing support further comprises a second pushing rod and a second power component, the second pushing rod and the second power component are both arranged in the withdrawing base, and the second pushing rod and the second power component control the withdrawing support to move in the withdrawing roadway.
In some embodiments, the withdrawing shield support further comprises a first pushing rod and a first power component, the first power component and the first pushing rod are both arranged inside the shield base, and the first pushing rod and the first power component control the withdrawing shield support to move in a withdrawing roadway.
In some embodiments, the draw frame boom comprises a draw frame beam, a draw frame chain lock, a chain connecting box and a fourth power component, the draw frame beam is hinged with the withdrawing base, the fourth power component is connected with the draw frame beam, one end of the draw frame chain lock is connected with one end of the fourth power component through the chain connecting box, and the other end of the draw frame chain lock is suitable for being connected with a target support.
In some embodiments, the cradle boom further comprises a pulley for assisting the cradle chain lock in moving.
In some embodiments, the fourth power component is a hydraulic component or an electric component.
In some embodiments, the hydraulic mount retracting device further comprises a trunnion assembly disposed between the carriage boom and the retracting mount.
In some embodiments, the hydraulic support retracting device further includes an elongated cross beam connected to the retracting shield support, and the elongated cross beam is disposed at a front end of the retracting support in the moving direction.
A hydraulic mount removing method according to a second aspect of the present invention includes the hydraulic mount removing apparatus according to any one of the above embodiments, and includes the steps of:
the second pushing rod drives the pushing beam and the lengthening beam to move towards the direction of the target support;
lowering the height of the second top beam to separate the second top beam from the top plate of the working surface, retracting the first push rod and driving the retracting shield support to enter a preset position, and then raising the height of the second top beam to enable the second top beam to be in contact with the top plate of the working surface again;
lowering the height of the first top beam to separate the first top beam from the top plate of the working surface, contracting the second pushing rod and driving the withdrawing support to enter a preset position, and then raising the height of the first top beam to enable the first top beam to be in contact with the top plate of the working surface again;
connecting the target support with the rack-pulling cantilever, and pulling the target support away from the current position by the rack-pulling cantilever;
and repeating the steps to finish the removal of all the target brackets.
According to the hydraulic support withdrawing method provided by the embodiment of the invention, the withdrawing efficiency and safety of the hydraulic support can be improved.
Drawings
Fig. 1 is a schematic diagram of an operation of a hydraulic support retracting device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a hydraulic support retracting support provided in an embodiment of the present invention.
Fig. 3 is a schematic structural view of a retracting shield support in the hydraulic support retracting device according to the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a drawing frame cantilever in the hydraulic support retracting device provided in the embodiment of the present invention.
Reference numerals:
the retraction device 100 is provided with a retraction mechanism,
the target holder 200 is provided with a target holder,
a retracting bracket 1, a first top beam 11, a retracting base 12, a first top beam supporting mechanism 13, a first telescopic component 131, an oblique beam 132, an upper connecting rod 133, a lower connecting rod 134, a second pushing rod 14, a second power component 15, a protective cover 16, a third power component 17, a tail beam 18, a tail beam supporting mechanism 19,
a retracting shield support 2, a second top beam 21, a shield base 22, a second top beam supporting mechanism 23, a second telescopic component 231, a supporting upright post 232, a first pushing rod 24, a first power component 25,
a drawer frame cantilever 3, a drawer frame beam 31, a drawer frame chain lock 32, a chain connecting box 33, a fourth power component 34, a pulley 35,
trunnion subassembly 4, pass crossbeam 5, extension crossbeam 6.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The hydraulic support withdrawing device is used for withdrawing a target support 200 on a working face and comprises at least one withdrawing support 1, a withdrawing shield support 2 and a withdrawing support cantilever 3, wherein the withdrawing shield support 2 is arranged on the mining side of the withdrawing support 1, the withdrawing support cantilever 3 is arranged on the coal wall side of the withdrawing support 1, the withdrawing support 1 and the withdrawing shield support 2 are used for withdrawing the support of the top plate of a working area, and the withdrawing support cantilever 3 is used for withdrawing the target support 200 at the front end of the withdrawing support 1 in the moving direction from the current position.
Wherein, the withdrawing bracket 1 can be multi-frame. It should be noted that, as shown in fig. 1, one side of the withdrawal roadway is a coal wall side, the other side is a gob, and the target support 200 is perpendicular to the coal wall and located on the gob side.
The withdrawing support 1 comprises a first top beam 11, a withdrawing base 12, a first top beam supporting mechanism 13, a tail beam 18, a tail beam supporting mechanism 19 and a third power component 17, the withdrawing base 12 is in contact with a bottom plate, the first top beam supporting mechanism 13 is arranged between the first top beam 11 and the withdrawing base 12, the first top beam supporting mechanism 13 is used for controlling the height of the first top beam 11, the tail beam 18 is hinged to the first top beam 11, the tail beam supporting mechanism 19 is arranged between the tail beam 18 and the withdrawing base 12, and the tail beam supporting mechanism 19 is used for controlling the swinging position of the tail beam 18.
As shown in fig. 2, the first cap support mechanism 13 further includes an inclined beam 132, an upper link 133 and a lower link 134, wherein one end of the upper link 133 is hinged to the retracting base 12, the other end of the upper link 133 is hinged to the inclined beam 132, one end of the lower link 134 is hinged to the retracting base 12, one end of the lower link 134 is hinged to the inclined beam 132, the upper link 133 is disposed above the lower link 134, and one end of the inclined beam 132 is hinged to the first cap 11.
As shown in FIG. 2, the rear end of the first top beam 11 is hinged to the upper end of the tail boom 18, the tail boom support 19 is hinged to the middle of the tail boom 18, and the tail boom support 19 controls the swing angle of the tail boom 18, for example, the tail boom 18 swings down by 90 °
The withdrawing shield support 2 comprises a second top beam 21, a shield base 22 and a second top beam supporting mechanism 23, the shield base 22 is in contact with a bottom plate, the second top beam supporting mechanism 23 is arranged between the second top beam 21 and the shield base 22, the second top beam supporting mechanism 23 is used for controlling the height of the second top beam 21, a third power component 17 is connected with the withdrawing base 12, the third power component 17 is arranged at the front end of the withdrawing support 1 in the moving direction, and the third power component 17 is used for controlling the distance between the front end of the withdrawing base 12 and the bottom plate.
It should be noted that, when the working face roof is supported by both the retracting shield support 2 and the retracting support 1, the heights of the first top beam 11 and the second top beam 21 are the same.
As shown in fig. 3, the second top beam supporting mechanism 23 includes a second telescopic member 231 and a plurality of supporting columns 232, one end of the second telescopic member 231 is connected to the second top beam 21, the second telescopic member 231 is used for controlling the height of the second top beam 21, the supporting columns 232 are disposed between the second top beam 21 and the shield base 22, the number of the supporting columns 232 may be multiple, for example, two or four, and when the number of the supporting columns 232 is multiple, the plurality of the supporting columns 232 are arranged at intervals in the left-right direction.
As shown in fig. 2, the third power member 17 is provided at the front end of the retracting base 12, and the third power member 17 is extendable and retractable in the up-down direction to control the distance between the front end of the retracting base 12 and the floor.
According to the hydraulic support withdrawing device provided by the embodiment of the invention, the withdrawing frame withdrawing operation of the target support 200 can be realized through the withdrawing frame cantilever 3 without additionally using withdrawing equipment, the withdrawing frame cantilever 3 is connected with the withdrawing support 1 and can move along with the movement of the withdrawing support 1, and an additional power mechanism is not required to be arranged for the movement of the withdrawing frame equipment, so that the complexity of the withdrawing frame mechanism is effectively reduced, the applicability of the hydraulic support withdrawing device and the withdrawing and moving speed of the hydraulic support are improved, the labor intensity of workers is reduced, the production efficiency is improved, and the production safety is enhanced.
The length of the retracting bracket 1 in the transportation state is reduced through the tail beam 18 and the tail beam supporting mechanism 19, so that the retracting bracket 1 is convenient to transport in the well and the underground, the phenomenon that falling gangue at the rear part of the retracting bracket enters the retracting operation space can be avoided, and the retracting safety of the hydraulic bracket is improved.
The distance between the front end of the retracting base 12 and the bottom plate can be adjusted by the third power component 17, and after the retracting device 100 sinks into the bottom plate, the third power component 17 lifts the retracting base 12, so that the retracting device 100 is convenient to get rid of difficulties, and the retracting device 100 can move more smoothly.
In some embodiments, the first top beam supporting mechanism 13 includes a plurality of first telescopic members 131, two ends of the plurality of first telescopic members 131 are respectively connected to the first top beam 11 and the retracting base 12, and the plurality of first telescopic members 131 are transversely spaced in a direction orthogonal to the moving direction of the retracting device 100.
It should be noted that the number of the first telescopic members 131 may be one, and when the number of the first telescopic members 131 is plural, the number may be two or four.
In some embodiments, the retracting bracket 1 further includes a second pushing rod 14 and a second power member 15, the second pushing rod 15 and the second pushing rod 14 are both disposed in the retracting base 12, and the second pushing rod 14 and the second power member 15 control the retracting bracket 1 to move in the retracting tunnel.
As shown in fig. 2, the second push lever 14 is horizontally arranged in the front-rear direction. The hydraulic support withdrawing device of the embodiment of the application enables the frame moving step distance of the withdrawing support 1 to be effectively improved by adopting the second power component 15, the single frame moving step distance can reach the width of a target support 200, namely, the frame can be moved to the position once when the withdrawing support 1 moves forwards, so that the frame moving efficiency of the withdrawing support 1 is obviously improved, and roof accidents caused by the fact that the roof of a withdrawing operation area is repeatedly supported and the roof is not timely in support connection are effectively reduced.
In some embodiments, the retracting shield support 2 further includes a first pushing rod 24 and a first power component 25, the first pushing rod 25 and the first pushing rod 24 are both disposed inside the shield base 22, and the first pushing rod 24 and the first power component 25 control the retracting shield support 2 to move in the retracting tunnel.
The hydraulic support withdrawing device of the application embodiment effectively improves the frame moving step distance of the withdrawing shield support 2 by adopting the first power part 25, the single frame moving step distance can reach the width of a target support 200, namely, the hydraulic support withdrawing device can move the frame to the position once when the withdrawing shield support 2 moves forwards, thereby obviously improving the frame moving efficiency of the withdrawing shield support 2 and effectively reducing the roof accidents caused by the untimely connection of the roof of the repeatedly supporting withdrawing operation area and the support.
In some embodiments, the cradle boom 3 comprises a cradle beam 31, a cradle chain lock 32, a chain connecting box 33 and a fourth power unit 34, the cradle beam 31 is hinged with the retracting base 12, the fourth power unit 34 is connected with the cradle beam 31, one end of the cradle chain lock 32 is connected with one end of the fourth power unit 34 through the chain connecting box 33, and the other end of the cradle chain lock 32 is adapted to be connected with the target holder 200.
The drawing frame cantilever 3 is connected with the coal wall side of the withdrawing bracket 1, and the drawing frame cantilever 3 is used for drawing the target bracket 200 at the front end of the withdrawing bracket 1 away from the current position.
According to the coal wall withdrawing bracket, the withdrawing bracket cantilever 3 is arranged on the coal wall side of the withdrawing bracket 1, so that control force can be applied to the target bracket 200 from the front end of the target bracket 200, and the target bracket 200 can be withdrawn from the current position.
In the embodiment of the present application, when the withdrawing support 1 is multiple, the withdrawing support cantilever 3 is disposed at the side closest to the coal wall, that is, the side adjacent to the coal wall of the withdrawing support 1 adjacent to the coal wall side in the multiple withdrawing supports 1, and thus, by disposing the withdrawing support cantilever 3 at the farthest end from the target support 200 in the withdrawing roadway, the movable space of the target support 200 is effectively increased, and the target support 200 is conveniently withdrawn from the current position quickly.
As shown in fig. 4, the other end of the pull frame chain 32 may be provided with a pull frame connection device for connecting the object holder 200. Alternatively, the drawer frame connection device may be a stable grabbing mechanism such as a clamp type manipulator, so as to be capable of stably acting on the target holder 200 at the distal end when the fourth power unit 34 provides a pulling force.
Specifically, when the fourth power member 34 provides a pulling force, the cradle beam 31 is pulled to move toward the end of the cradle cantilever 3 and move the cradle chain lock 32, so that the target cradle 200 connected by the cradle connection device is pulled away from the current position as the cradle chain lock 32 moves.
From this, the support withdrawing device 100 that this application provided can realize the operation of withdrawing the frame of target holder 200 through withdrawing frame cantilever 3, need not additionally to use and takes out from equipment, moreover, withdraws frame cantilever 3 and withdraws support 1 and link to each other, can remove along with the removal of withdrawing support 1, need not additionally to set up power unit to the removal of withdrawing frame equipment, has effectively reduced the complexity of withdrawing the frame mechanism, has improved the suitability of withdrawing the frame mechanism.
In some embodiments, the draw frame boom 3 further comprises a pulley 35, the pulley 35 being used to assist the movement of the draw frame chain lock 32.
It should be noted that, because the rack-pulling cantilever 3 is a structure parallel to the coal wall, and the target support 200 is perpendicular to the coal wall, so that the direction of the pulling force provided by the fourth power component 34 is perpendicular to the direction of the pulling force exerted on the target support 200, in order to effectively reduce the loss while changing the direction of the pulling force, for example, the friction loss between the rack-pulling chain lock 32 and the housing of the rack-pulling cantilever 3, the present application is provided with the pulley 35 on the inner side of the rack-pulling chain lock 32, and the direction of the pulling force can be changed through the circular structure of the pulley 35, and meanwhile, the loss of the pulling force in the transmission process is effectively reduced by using the rolling friction of the pulley 35, and the rack-pulling efficiency is effectively improved.
In some embodiments, the fourth power component 34 is a hydraulic component or an electric component.
Where the fourth power component 34 is a hydraulic device, the carriage beam 31 may be a piston end of a hydraulic cylinder.
It is to be understood that the kind of the fourth power member 34 is not limited thereto, and only needs to satisfy the power that can provide an effective pulling force to the drawer chain 32 so that the drawer chain 32 can move in the direction of retracting the rack 1. When the fourth power component 34 is a hydraulic device, in order to reduce the number of components and the complexity of production, the piston end of the hydraulic device can be directly connected to the cradle chain lock 32 as the cradle beam 31.
In some embodiments, the hydraulic support retracting device further comprises a trunnion assembly 4, the trunnion assembly 4 being disposed between the extraction support boom 3 and the retracting support 1.
In some embodiments, the hydraulic support retracting device further comprises a pushing beam 5, the pushing beam 5 is connected with the retracting support 1, and the pushing beam 5 is arranged at the front end of the retracting support 1 in the moving direction.
In some embodiments, the hydraulic support retracting device further comprises an extension beam 6, the extension beam 6 is connected with the retracting shield support 2, and the extension beam 6 is arranged at the front end of the retracting support 1 in the moving direction.
As shown in fig. 1, a pushing beam 5 is provided at the front end of the retracting bracket 1
In some embodiments, the hydraulic support retracting device further comprises an extension beam 6, the extension beam 6 is connected with the retracting shield support 2, and the extension beam 6 is arranged at the front end of the retracting support 1 in the moving direction.
As shown in fig. 1, the extension beam 6 is provided at the front end of the retracted shield support 2, the extension beam 6 is flexibly connected to the retracted shield support 2, and the retracted shield support 2 can swing in the left-right direction.
A hydraulic mount retracting device according to some embodiments of the present invention will be described with reference to fig. 1 to 4.
The hydraulic support withdrawing device for withdrawing a target support 200 of a working surface comprises at least one withdrawing support 1, a withdrawing shield support 2, a withdrawing support cantilever 3, a trunnion assembly 4, a pushing beam 5 and an lengthening beam 6.
The withdrawing shield support 2 is arranged on the mining side of the withdrawing support 1, the drawing support cantilever 3 is connected with the coal wall side of the withdrawing support 1, the drawing support cantilever 3 is used for drawing the target support 200 at the front end of the withdrawing support 1 in the moving direction away from the current position, and the trunnion assembly 4 is arranged between the drawing support cantilever 3 and the withdrawing support 1.
The retracting bracket 1 comprises a first top beam 11, a retracting base 12, a first top beam supporting mechanism 13, a second pushing rod 14, a second power component 15, a protective cover 16, a third power component 17, a tail beam 18 and a tail beam supporting mechanism 19.
The first top beam supporting mechanism 13 further includes an inclined beam 132, an upper connecting rod 133 and a lower connecting rod 134, one end of the upper connecting rod 133 is hinged to the retracting base 12, the other end of the upper connecting rod 133 is hinged to the inclined beam 132, one end of the lower connecting rod 134 is hinged to the retracting base 12, one end of the lower connecting rod 134 is hinged to the inclined beam 132, the upper connecting rod 133 is disposed above the lower connecting rod 134, and one end of the inclined beam 132 is hinged to the first top beam 11.
The second power component 15 and the second pushing rod 14 are both arranged in the withdrawing base 12, and the second pushing rod 14 and the second power component 15 control the withdrawing support 1 to move in the withdrawing roadway.
The third power component 17 is connected with the retracting base 12, the third power component 17 is arranged at the front end of the retracting bracket 1 in the moving direction, and the third power component 17 is used for controlling the distance between the front end of the retracting base 12 and the bottom plate.
The tail beam 18 is hinged with the first top beam 11, the tail beam supporting mechanism 19 is arranged between the tail beam 18 and the retracting base 12, and the tail beam supporting mechanism 19 is used for controlling the swinging position of the tail beam 18.
The retracting shield support 2 comprises a second top beam 21, a shield base 22, a second top beam supporting mechanism 23, a first push rod 24 and a first power component 25.
The shield base 22 is in contact with the floor, the second canopy support mechanism 23 is provided between the second canopy 21 and the shield base 22, and the second canopy support mechanism 23 is used to control the height of the second canopy 21.
The second top beam support mechanism 23 includes a second telescopic member 231 and a support pillar 232, one end of the second telescopic member 231 is connected to the second top beam 21, the second telescopic member 231 is used for controlling the height of the second top beam 21, and the support pillar 232 is disposed between the second top beam 21 and the shield base 22.
The first power component 25 and the first pushing rod 24 are arranged inside the shield base 22, and the first pushing rod 24 and the first power component 25 control the retraction shield support 2 to move in the retraction roadway.
The cradle boom 3 comprises a cradle beam 31, a cradle chain lock 32, a chain connecting box 33, a fourth power unit 34 and a pulley 35.
The drawer beam 31 is hinged with the withdrawing base 12, the fourth power component 34 is connected with the drawer beam 31, one end of the drawer chain lock 32 is connected with one end of the fourth power component 34 through the chain connecting box 33, and the other end of the drawer chain lock 32 is suitable for being connected with the target bracket 200.
The pulley 35 is used to assist the movement of the draw chain 32.
The pushing beam 5 is connected with the withdrawing bracket 1, and the pushing beam 5 is arranged at the front end of the withdrawing bracket 1
The lengthened beam 6 is connected with the retracting shield support 2, the lengthened beam 6 is arranged at the front end of the retracting shield support 2, the lengthened beam 6 is flexibly connected with the retracting shield support 2, and the retracting shield support 2 can swing in the left-right direction.
According to the hydraulic support withdrawing method provided by the embodiment of the invention, the hydraulic support withdrawing device comprises the hydraulic support withdrawing device provided by any one embodiment, and the withdrawing method comprises the following steps:
the second pushing rod drives the pushing beam and the lengthening beam to move towards the direction of the target support.
It should be noted that, when there are a plurality of retracting brackets, the plurality of retracting brackets are arranged side by side in the left-right direction, the second pushing rod of the plurality of retracting brackets works simultaneously to drive the pushing beam to move in the direction of the target bracket (in the front direction as shown in fig. 1), and the lengthened beam moves forward along with the pushing beam and drives the first pushing rod to move forward. The moving distances of the pushing beam and the lengthening beam in the front and back direction are equal.
And lowering the height of the second top beam to separate the second top beam from the top plate of the working surface, contracting the first push rod and driving the retraction shield support to enter a preset position, and then raising the height of the second top beam to enable the second top beam to be in contact with the top plate of the working surface again.
Specifically, when the first pushing rod drives the retracting shield support to move towards the preset position, the lengthened cross beam is used as an anchoring point, and the moving efficiency of the retracting shield support is improved.
It should be noted that, after the height of the second top beam is reduced, the height of the first top beam in the retraction bracket is kept unchanged, so that after the top plate of the working face loses the support of the second top beam, the top plate is still supported by the plurality of retraction brackets, and the safety of retraction operation is ensured.
And lowering the height of the first top beam to separate the first top beam from the top plate of the working surface, contracting the second pushing rod and driving the retraction support into a preset position, and then raising the height of the first top beam to enable the first top beam to be in contact with the top plate of the working surface again.
It should be noted that, when the number of the retracting supports is plural, the first top beam of one of the retracting supports adjacent to the retracting shield support among the plural retracting supports is firstly lowered in height and separated from the top plate of the working surface, then the second pushing rod of the retracting support is retracted, the second pushing rod takes the pushing cross beam as an anchoring point to drive the retracting support to enter a preset position, and then the first top beam of the retracting support is raised and is in contact with the top plate of the working surface again. The operation is repeated by the rest of the retracting brackets, and finally, a plurality of retracting brackets are all moved into the preset positions.
And connecting the target support with a drawing frame cantilever, and drawing the target support away from the current position by the drawing frame cantilever.
Specifically, the stroke of the fourth power component in the drawing frame cantilever is not less than the drawing distance required by the target support.
It should be noted that, when the target support is pulled out of place, the direction of the target support can be adjusted by a mining dispatching winch and the target support is pulled to a crossheading or a loading platform for loading and transporting away.
And repeating the steps to finish the removal of all the target brackets.
According to the hydraulic support withdrawing method provided by the embodiment of the invention, the withdrawing efficiency and safety of the hydraulic support can be improved.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A hydraulic support retracting device for retracting a target support of a work surface, the hydraulic support retracting device comprising: the mining shield comprises at least one withdrawing support, a withdrawing shield support and a withdrawing support cantilever, wherein the withdrawing shield support is arranged on the mining side of the withdrawing support, the withdrawing support cantilever is arranged on the coal wall side of the withdrawing support, the withdrawing support and the withdrawing shield support are used for withdrawing the support of the top plate of the operation area, and the withdrawing support cantilever is used for withdrawing a target support at the front end of the withdrawing support in the moving direction from the current position;
the retracting bracket comprises a first top beam, a retracting base, a first top beam supporting mechanism, a tail beam and a tail beam supporting mechanism;
the retracting base is contacted with the bottom plate, the first top beam supporting mechanism is arranged between the first top beam and the retracting base and used for controlling the height of the first top beam, the tail beam is hinged with the first top beam and arranged between the tail beam and the retracting base, and the tail beam supporting mechanism is used for controlling the swinging position of the tail beam;
the retracting shield support comprises a second top beam, a shield base and a second top beam supporting mechanism, the shield base is in contact with the bottom plate, the second top beam supporting mechanism is arranged between the second top beam and the shield base, and the second top beam supporting mechanism is used for controlling the height of the second top beam;
the pushing beam is connected with the withdrawing support and is arranged at the front end of the moving direction of the withdrawing support.
2. The hydraulic support retracting device of claim 1, wherein the first top beam supporting mechanism comprises a plurality of first telescopic members, two ends of the plurality of first telescopic members are respectively connected with the first top beam and the retracting base, and the plurality of first telescopic members are transversely arranged at intervals in a direction orthogonal to a moving direction of the retracting device.
3. The hydraulic support retracting device according to claim 1, wherein the retracting support further comprises a second pushing rod and a second power component, the second pushing rod and the second power component are both arranged in the retracting base, and the second pushing rod and the second power component control the retracting support to move in a retracting roadway.
4. The hydraulic support withdrawing device as set forth in claim 1, wherein the withdrawing shield support further comprises a first push rod and a first power unit, the first push rod and the first power unit are both disposed inside the shield base, and the first push rod and the first power unit control the withdrawing shield support to move in a withdrawing roadway.
5. The hydraulic support retracting device of claim 1, wherein the carriage boom comprises a carriage beam, a carriage chain lock, a chain connecting box and a fourth power component, the carriage beam is hinged with the retracting base, the fourth power component is connected with the carriage beam, one end of the carriage chain lock is connected with one end of the fourth power component through the chain connecting box, and the other end of the carriage chain lock is suitable for being connected with a target support.
6. The hydraulic mount retraction device according to claim 5, wherein the carriage boom further comprises a pulley for assisting the carriage chain lock movement.
7. The hydraulic mount retraction device according to claim 5, wherein the fourth power component is a hydraulic component or an electric component.
8. The hydraulic mount retracting device of claim 5, further comprising a trunnion assembly disposed between the carriage boom and the retracting mount.
9. The hydraulic support retracting device according to any one of claims 1 to 8, further comprising an elongated cross member connected to the retracting shield support, the elongated cross member being provided at a front end in a moving direction of the retracting support.
10. A hydraulic mount removing method including the hydraulic mount removing device as recited in claim 9, the removing method comprising the steps of:
the second pushing rod drives the pushing beam and the lengthening beam to move towards the direction of the target support;
lowering the height of the second top beam to separate the second top beam from the top plate of the working surface, retracting the first push rod and driving the retracting shield support to enter a preset position, and then raising the height of the second top beam to enable the second top beam to be in contact with the top plate of the working surface again;
lowering the height of the first top beam to separate the first top beam from the top plate of the working surface, contracting the second pushing rod and driving the withdrawing support to enter a preset position, and then raising the height of the first top beam to enable the first top beam to be in contact with the top plate of the working surface again;
connecting the target support with the rack-pulling cantilever, and pulling the target support away from the current position by the rack-pulling cantilever;
and repeating the steps to finish the removal of all the target brackets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011628904.0A CN112761697A (en) | 2020-12-31 | 2020-12-31 | Hydraulic support withdrawing device and withdrawing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011628904.0A CN112761697A (en) | 2020-12-31 | 2020-12-31 | Hydraulic support withdrawing device and withdrawing method |
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| CN112761697A true CN112761697A (en) | 2021-05-07 |
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| CN202011628904.0A Pending CN112761697A (en) | 2020-12-31 | 2020-12-31 | Hydraulic support withdrawing device and withdrawing method |
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