CN109386305B - Working face bottom plate assembly and working face support mounting and withdrawing method using same - Google Patents
Working face bottom plate assembly and working face support mounting and withdrawing method using same Download PDFInfo
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- CN109386305B CN109386305B CN201810996175.0A CN201810996175A CN109386305B CN 109386305 B CN109386305 B CN 109386305B CN 201810996175 A CN201810996175 A CN 201810996175A CN 109386305 B CN109386305 B CN 109386305B
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007704 transition Effects 0.000 claims abstract description 59
- 238000010008 shearing Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 31
- 238000011084 recovery Methods 0.000 claims description 26
- 238000004064 recycling Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 10
- 239000003245 coal Substances 0.000 description 8
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/60—Devices for withdrawing props or chocks
- E21D15/606—Devices for withdrawing props or chocks the props being moved systematically
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a working face bottom plate assembly, which comprises an upper end crawler belt, an upper transition crawler belt, a plurality of middle crawler belts, a lower transition crawler belt and a lower end crawler belt; an upper anchor rod fixing hole is formed in the upper end track and is inserted into the upper anchor rod fixing hole through an anchor rod to be fixed with the bottom plate; the upper side of the upper transition crawler is connected with the lower side of the upper end crawler through a first pin shaft, and the lower side of the upper transition crawler is connected with the upper side of the uppermost middle crawler through a shearing pin; the plurality of intermediate tracks are connected in sequence, and adjacent intermediate tracks are connected through shear pins; the lower side of the middle crawler belt at the lowest end is connected with the upper side of the lower transition crawler belt through a shear pin, and the lower side of the lower transition crawler belt is connected with the upper side of the crawler belt at the lower end through a second pin shaft; and a lower anchor rod fixing hole is formed in the lower end crawler and is inserted into the lower anchor rod fixing hole through an anchor rod to be fixed with the bottom plate. The invention also discloses a working face support mounting and withdrawing method which can realize safe and quick mounting and withdrawing of the support.
Description
Technical Field
The invention relates to the technical field of mine exploitation, in particular to a working face bottom plate assembly and a working face support mounting and withdrawing method using the working face bottom plate assembly.
Background
The installation and withdrawal of the coal face of the underground mine are key work of safe production of the coal mine and key points of mine production cost management. The high-yield and high-efficiency mine can be efficient only by using an advanced trackless rubber-tyred vehicle to install a retracement working face, and the trackless rubber-tyred vehicle on the inclined coal seam coal mining working face cannot be used due to the limitation of a climbing angle. At present, each mine is constructed with a concrete terrace on a bottom plate of a working face channel, a support is dragged to a working face upper opening by a winch, and then a trackless rubber-tyred vehicle is used for installation or recovery. Because the inclined working face terrace construction is influenced by transportation links, bottom plate flatness, channel bottom plate hardness, concrete curing time and the like (the working face with the length of 200 meters needs 7 days at the fastest), the installation and retraction progress of the working face is greatly limited, the recovery and installation period is prolonged, the economic benefit of a mine is seriously influenced, and great pressure is brought to the prevention and control of natural ignition of a working face goaf. Meanwhile, the support of the withdrawing working surface is installed to repeatedly rub with the bottom plate for many times, the local terrace of the working surface is easy to loosen and damage, the support is easy to withdraw (install) to the place, stress imbalance occurs, and risks such as deflection and frame falling occur. In case the terrace damages and just need stop to install the work of withdrawing and carry out the concrete repair from safe angle, also adopt to lay a monoblock steel sheet sometimes, fix with the stock all around and restore damaged terrace. Due to the heavy weight of the bracket, the local repairing effect is very poor. Along with the application of polyurethane macromolecular material in the colliery, polyurethane macromolecular material makes the floor and lays and also tried at the inclined coal seam working face, and its requirement to the bottom plate roughness of laying is very high in the use, uses its withstand voltage very poor on unevenness's bottom plate. The mutual connection between each section of the joint of the polyurethane high polymer material is not smooth, the polyurethane high polymer material is dragged, the phenomena of disconnection, error and the like occur, the treatment is more difficult than that of a construction concrete terrace, and the aim of quick installation and withdrawal is not achieved.
The existing treatment methods for installing and withdrawing the working face channel bottom plate have the problems of long construction period, high production cost, safety and unreliability, natural ignition of coal beds and the like in different degrees. Particularly, the working face is withdrawn in a short natural ignition period of the coal seam, and the serious consequence that the working face is naturally ignited and forced to be closed is inevitably caused due to long service and recovery period. The working face is provided with a mode of commonly constructing the concrete terrace for the withdrawing channel bottom plate, and the whole construction period generally needs 10 days from concrete transportation, laying to maintenance and other processes, and the reliability is poor, the local part is easy to damage in the withdrawing process, and the treatment is difficult. The bottom plate made of polyurethane high polymer materials is light, but the requirement on the flatness of the bottom plate is too high, the pressure resistance of the road surface of an uneven channel is poor, cracks are easy to damage, quick connection ports do not exist between every two sections of the materials, the plates cannot form a whole body, the plates are easy to slide and deform, the installation and retraction speed of a working surface is influenced, the reuse rate of the bottom plate made of the polyurethane high polymer materials is low, the design and use purpose cannot be achieved through underground use, secondary reuse cannot be achieved after one installation and retraction surface is tried, and the project efficiency is not improved.
In summary, there is a need to design a working surface base plate assembly and a working surface support mounting and retracting method using the working surface base plate assembly, which have high compressive strength, simple and fast laying and connection, low requirements for laying environment and base plate flatness, and low cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a working surface bottom plate assembly which has high compressive strength, simple and quick laying and connection, low requirements on laying environment and bottom plate flatness and low cost and a working surface support mounting and withdrawing method utilizing the working surface bottom plate assembly.
The invention provides a working face bottom plate assembly, which comprises an upper end crawler belt, an upper transition crawler belt, a plurality of middle crawler belts, a lower transition crawler belt and a lower end crawler belt, wherein the upper end crawler belt is arranged on the upper end of the working face bottom plate;
an upper anchor rod fixing hole is formed in the upper end track and is inserted into the upper anchor rod fixing hole through an anchor rod to be fixed with the bottom plate;
the upper side of the upper transition crawler is connected with the lower side of the upper end crawler through a first pin shaft, and the lower side of the upper transition crawler is connected with the upper side of the uppermost intermediate crawler through a shear pin;
the plurality of intermediate tracks are connected in sequence, and adjacent intermediate tracks are connected through the shear pins;
the lower side of the middle crawler belt at the lowest end is connected with the upper side of the lower transition crawler belt through the shearing pin, and the lower side of the lower transition crawler belt is connected with the upper side of the lower end crawler belt through a second pin shaft;
and a lower anchor rod fixing hole is formed in the lower end crawler and is inserted into the lower anchor rod fixing hole through an anchor rod to be fixed with the bottom plate.
Furthermore, the working face bottom plate assembly further comprises special tracks, the special tracks are located between the two adjacent upper and lower middle tracks, each special track is connected with two middle tracks, middle anchor rod fixing holes are formed in the left end and the right end of each special track, and the anchor rods are inserted into the middle anchor rod fixing holes and fixed with the bottom plate.
Furthermore, the special crawler belts are arranged at intervals of 20-30 m along the length direction of the bottom plate of the working face, and the length of the two ends of each special crawler belt protruding out of the end part of the middle crawler belt is 300 mm.
Further, the working face bottom plate component further comprises a crawler belt recovery connecting plate, a plurality of reserved pin holes are formed in the upper side edge and the lower side edge of the crawler belt recovery connecting plate, the upper side edge of the crawler belt recovery connecting plate is connected with the lower side edge of the lower transition crawler belt, the upper side edge of the lower transition crawler belt is connected with the lower side edge of the middle crawler belt, and the lower side edge of the crawler belt recovery connecting plate is used for connecting two shield support pushing heads.
The invention also provides a working face support mounting and withdrawing method utilizing any one of the working face baseplate assemblies, which comprises the following steps:
before the working face support is installed, the working face bottom plate components are sequentially laid from top to bottom;
when the working face support is installed, the support to be installed is pulled to the working face bottom plate assembly and is pulled to the position to be installed along the length direction of the working face bottom plate assembly, and direction adjustment installation is carried out;
after the working face support is installed, the working face bottom plate assembly is disassembled and recycled section by section from bottom to top;
before the working face support is retracted, the working face bottom plate assembly is paved again from top to bottom in sequence;
when the working face support is retracted, the support to be recovered is pulled to the upper opening of the working face to be recovered along the working face bottom plate assembly.
Further, when the working face support is retracted, the step of pulling the support to be recovered to the upper opening of the working face along the working face bottom plate component for recovery further comprises the following steps:
step 501: after the first support is pulled out and turned from bottom to top, a first shield support is formed, a second support is pulled out and turned to form a second shield support, after the third support is pulled out and turned to the back, the third support is pulled to the paved bottom plate assembly of the working face by a winch and is pulled to the upper opening of the working face, and the third support is turned by the winch and then is recovered;
step 502: the working face bottom plate assembly is dismantled to the position below a fourth support from bottom to top section by section, the lower transition crawler belt and the crawler belt recovery connecting plate are installed, and the crawler belt recovery connecting plate is connected with the shield support pushing head;
step 503: pulling the fourth bracket to the upper opening of the working surface for recycling along the working surface bottom plate component paved in the step 502;
step 504: then the middle crawler belt above the lower transition crawler belt is dismantled section by section to the position below the next support to be recovered, and then the middle crawler belt and the lower transition crawler belt are connected;
step 505: pulling the next bracket to be recovered to the upper opening of the working surface to be recovered along the working surface bottom plate component paved in the step 504;
step 506: and repeating the steps 504 and 505 until the support to be recovered is recovered to the upper opening of the working surface, and dismantling and recovering the whole support.
Further, before the installation of the working face bracket, the working face bottom plate component is sequentially paved from top to bottom, and the method further comprises the following steps:
inserting the anchor rod into the upper anchor rod fixing hole of the upper end crawler to be fixed with the bottom plate at the position close to a winch on the upper part of the working surface;
connecting the lower side edge of the upper end crawler with the upper side edge of the upper transition crawler by using the first pin shaft;
connecting a lower side plate of the upper transition crawler to an upper side of the uppermost intermediate crawler by using the shear pin;
connecting a plurality of the intermediate tracks in sequence, wherein adjacent intermediate tracks are connected through the shear pins;
connecting the lower side of the middle crawler belt at the lowermost end with the upper side of the lower transition crawler belt by using the shear pin;
connecting the lower side edge of the lower transition crawler belt with the upper side edge of the lower end crawler belt by using the second pin shaft;
and inserting the anchor rod into the lower anchor rod fixing hole of the lower end part crawler belt to be fixed with the bottom plate.
Further, before the working face support is installed, the lower end crawler is installed at a position 300mm beyond the first support of the lower opening of the working face.
After adopting above-mentioned technical scheme, have following beneficial effect:
the working face bottom plate assembly is formed by paving different crawler belts on the working face bottom plate, is used for the mounting and withdrawing method of the working face support, and can realize safe and quick mounting and withdrawing of the support. In addition, the crawler belt has the advantages of high compressive strength, simple and quick laying and connection, low requirements on laying environment and bottom plate flatness and low cost.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
FIG. 1 is a schematic view of the upper half of a work surface floor assembly in accordance with an embodiment of the present invention;
FIG. 2 is a schematic illustration of a mid-section of a face plate assembly in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of the lower half of the floor assembly of the work surface in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of the lower half of a work surface base plate assembly in accordance with another embodiment of the present invention;
FIG. 5 is a schematic illustration of a work surface bracket installation and retraction method of yet another embodiment of the present invention prior to installation of the work surface bracket;
FIG. 6 is a schematic illustration of the installation of a work surface bracket during a method of installation and retraction of a work surface bracket in accordance with a further embodiment of the invention;
fig. 7 is a schematic view of the work surface support being retracted in a work surface support installation retraction method in accordance with yet another embodiment of the present invention.
Reference symbol comparison table:
10-bracket to be installed 20-bracket to be recovered 30-traction winch
40-Direction adjusting winch 50-Down lowering winch 60-installed support
70-recovery winch 80-bracket to be retracted
1-upper end crawler 2-upper transition crawler 3-middle crawler
4-lower transition crawler belt 5-lower end crawler belt 6-special crawler belt
7-crawler belt recovery connecting plate
11-anchor bolt fixing hole 21-first pin shaft 31-shear pin
41-second pin shaft 51-lower anchor rod fixing hole 61-middle anchor rod fixing hole
71-reserved pin hole 72-shield support pushing head 73-pushing pin
74-shield support pushing beam L-crawler mounting center line
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
It is easily understood that according to the technical solution of the present invention, those skilled in the art can substitute various structures and implementation manners without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as limiting or restricting the technical aspects of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
As shown in fig. 1 and 3, the working surface base plate assembly comprises an upper end crawler 1, an upper transition crawler 2, a plurality of middle crawlers 3, a lower transition crawler 4 and a lower end crawler 5;
an upper anchor rod fixing hole 11 is formed in the upper end crawler 1, and the upper anchor rod fixing hole 11 is inserted through an anchor rod and fixed with the bottom plate;
the upper side of the upper transition crawler 2 is connected with the lower side of the upper end crawler 1 through a first pin shaft 21, and the lower side of the upper transition crawler 2 is connected with the upper side of the uppermost middle crawler 3 through a shear pin 31;
the anchor rod supporting plate is used for tightly pressing and installing the upper end crawler 1, the first pin shaft 21 with the diameter of 30mm is used for being connected with the upper transition crawler 2 through the connecting pin hole, and a nut is tightened. The first pin 21 is oriented in a direction perpendicular to the plane of the paper of fig. 1, which is parallel to the insertion direction of the anchor. The shear pin 31 is oriented in the left-right direction of fig. 1, which is parallel to the direction of the base plate, and perpendicular to the first pin 21.
The plurality of intermediate tracks 3 are connected in sequence, adjacent intermediate tracks 3 are connected through the shearing pin 31, the shearing pin 31 is a high-strength pin, the length of the pin is 500mm, the aperture is phi 200mm, and the intermediate tracks 3 can be used as waste fully-mechanized excavating machine tracks;
the lower side of the middle crawler 3 at the lowest end is connected with the upper side of the lower transition crawler 4 through the shear pin 31, and the lower side of the lower transition crawler 4 is connected with the upper side of the lower end crawler 5 through the second pin shaft 41;
the second pin 41 has the same structure as the first pin 41, and is also parallel to the insertion direction of the anchor rod.
The lower end crawler 5 is provided with a lower anchor rod fixing hole 51, and the lower anchor rod fixing hole 51 is inserted into through the anchor rod to be fixed with the bottom plate.
Further, as shown in fig. 2, the working face bottom plate assembly further comprises special tracks 6, the special tracks 6 are located between two adjacent upper and lower middle tracks 3, each special track 6 is connected with two rows of middle tracks 3, middle anchor rod fixing holes 61 are formed in the left end and the right end of each special track 6, and the anchor rods are inserted into the middle anchor rod fixing holes 61 and fixed with the bottom plate.
The working face bottom plate component comprises two crawler belt groups from top to bottom, each crawler belt group comprises an upper end crawler belt 1, an upper transition crawler belt 2, a plurality of middle crawler belts 3, a lower transition crawler belt 4 and a lower end crawler belt 5, and two crawler belt groups are connected by a special crawler belt 6 at a certain distance along the length direction.
Specifically, according to the laying distance of the crawler belts and the undulation of the installation channel bottom plate, one special crawler belt 6 is installed at intervals of 20m to 30m along the length direction of the working surface bottom plate, and the length of the end part of the special crawler belt 6 protruding from the middle crawler belt 3 at two ends is 300 mm. Or a special crawler belt 6 is arranged at a slope-changing position of the bottom plate relative to undulation, and a hard link is used in the middle of the special crawler belt 6 to connect the two crawler belts; both sides are respectively lengthened 300mm to reserved middle part stock fixed orifices 61, utilized the stock to fix in both sides, thereby reduce with the swing when control support slides on the track.
As shown in fig. 4, in another embodiment of the present invention, when the working face support frame is retracted, the lower half of the working face bottom plate assembly is not connected to the lower end crawler 5, but is instead connected to the crawler recovery connecting plate 7, the upper side and the lower side of the crawler recovery connecting plate 7 are both provided with a plurality of reserved pin holes 71, the upper side of the crawler recovery connecting plate 7 is connected to the lower sides of the two lower transition crawlers 4, the upper side of the lower transition crawlers 4 is connected to the lower side of the middle crawler 3, and the lower side of the crawler recovery connecting plate 7 is used for connecting to the two shield support frame pushing heads 72.
A shield support pusher beam 74 is connected to the lower side of the shield support pusher head 72, and the shield support pusher head 72 is connected to the lower side of the crawler belt recovery link plate 7 via a pusher pin 73.
The invention also provides a working face support mounting and withdrawing method using any one of the working face bottom plate assemblies, which comprises the following steps:
before step 1, as shown in fig. 5, the working face support adopts a bottom-up installation process, and a support 10 to be installed is lowered by hauling with a winch. And after the working face hole cutting construction is finished, cleaning scum of the bottom plate. After the steering winch 40 and lowering winch 50 are installed at the design location, the tracks are laid.
Step 1: before the working face support is installed, sequentially laying a working face bottom plate component from top to bottom;
as shown in fig. 5, the track laying position is determined according to the position of the track installation center line L and the size of the bracket base, and the track laying is ensured to be arranged in the middle of the two side bases of the lowered bracket 10 to be installed.
Step 101: according to the determined installation position of the crawler, an anchor rod is inserted into an upper anchor rod fixing hole 11 of the crawler 1 at the upper end part to be fixed with the bottom plate at the position, close to a winch, of the upper part of the working surface;
step 102: the lower side edge of the upper end crawler 1 is connected with the upper side edge of the upper transition crawler 2 by a first pin shaft 21;
step 103: the lower side plate of the upper transition crawler 2 is connected with the upper side edge of the uppermost intermediate crawler 3 by using a shear pin 31;
step 104: connecting a plurality of intermediate crawler belts 3 in sequence, wherein adjacent intermediate crawler belts 3 are connected through a shear pin 31;
step 105: a special crawler belt 6 is connected between two adjacent upper and lower middle crawler belts 3 and is inserted into a middle anchor rod fixing hole 61 through an anchor rod to be fixed with the bottom plate;
step 106: the lower side of the lowermost intermediate crawler 3 is connected to the upper side of the lower transition crawler 4 by means of shear pins 31;
step 107: the lower side of the lower transition crawler 4 is connected with the upper side of the lower end crawler 5 by a second pin shaft 41;
step 108: the anchor rods are inserted into the lower anchor rod fixing holes 51 of the lower end crawler 5 to be fixed to the base plate.
Specifically, before the working face support is installed, the installation position of the lower end crawler 5 is determined according to the length of the working face and the installation direction-adjusting position of the first support of the lower opening of the working face, and the installation length of the working face bottom plate component is preferably 300mm longer than that of the first support of the lower opening of the working face. The lower transition crawler 4 is installed at a position 300mm away from the lower opening of the working face, the lower end crawler is connected with the lower transition crawler 4 through a second pin shaft 41, and the lower end crawler 5 is fixed through an anchor rod.
Step 2: when the working face bracket is installed, the bracket 10 to be installed is pulled and moved to the working face bottom plate component and is pulled to the position to be installed along the length direction of the working face bottom plate component for direction-adjusting installation;
specifically, as shown in fig. 6, the support 10 to be installed is transported to the upper opening of the working face, and the support 10 to be installed is pulled and moved to the bottom plate assembly of the working face by using the traction winch 30 in cooperation with the direction-adjusting winch 40 and the lowering winch 50, so that two sides of the support base are respectively pressed on the two rows of track sets which are laid. And then, the support 10 to be installed is pulled to the position to be installed along the paved working face bottom plate assembly by using a working face winch to perform direction-adjusting installation. During installation, a blocking device can be arranged on the track at the lower part of the bracket 10 to be installed, so that the bracket 10 to be installed is prevented from sliding downwards along the track, and a limiting effect is achieved.
And step 3: after the working face bracket is installed, the working face bottom plate components are disassembled and recycled section by section from bottom to top;
if the mounting of the bracket and the working face are carried out synchronously, the front scraper conveyor can be recycled section by section from bottom to top when being mounted; or can be recovered at a pushing beam between the bracket and the front scraper conveyor when the working surface is pushed forwards after being installed.
And 4, step 4: before the working face support is retracted, sequentially laying the working face bottom plate assembly again from top to bottom;
after the working face hole cutting construction is finished, larger and softer scum on the bottom plate is cleaned. After installation of the direction adjusting drawworks 40 and the retrieval drawworks 70, the crawler tracks are installed in the order of steps 101-108.
However, unlike step 108, the mounting position of the lower end crawler 5 is fixed to a position 300mm or so below the third stand from the bottom to the top on the working surface.
And 5: when the working face bracket is retracted, the bracket 20 to be recovered is pulled to the upper opening of the working face along the working face bottom plate component for recovery.
As shown in fig. 7, step 5 further includes the steps of:
step 501: after the first support is pulled out and turned from bottom to top, a first shield support 20-1 is formed, after the second support is pulled out and turned, a second shield support 20-2 is formed, after the third support is pulled out and turned, the third support is pulled to the bottom plate component of the paved working surface by a winch and is pulled to the upper opening of the working surface, and then the third support is turned by the winch and is recovered;
step 502: dismounting the bottom plate assembly of the working face from bottom to top section by section to about 300mm below the fourth support 20-4, mounting a lower transition crawler 4 and a crawler recovery connecting plate 7, and connecting the crawler recovery connecting plate 7 with a shield support pushing head 72;
step 503: pulling the fourth support 20-4 along the bottom plate assembly of the working surface paved in the step 502 to the upper opening of the working surface for recycling;
step 504: then the middle crawler 3 above the lower transition crawler 4 is dismantled section by section to the lower side of the next bracket 20 to be recovered by about 300mm, and then the middle crawler 3 and the lower transition crawler 4 are connected;
step 505: pulling the next support 20 to be recovered to the upper opening of the working surface to be recovered along the bottom plate component of the working surface paved in the step 504;
step 506: and repeating the steps 504 and 505 until the support 20 to be recovered on the upper opening of the working surface is recovered, and dismantling and recovering the whole support.
The crawler belt can be adjusted to the position of the support 80 to be retracted each time according to the distance between the first shield support 20-1 and the second shield support 20-2 and fixed with the shield support push head 72, and meanwhile, the first shield support 20-1 and the second shield support 20-2 can be pulled and moved by the crawler belt, so that the time for connecting the winch hook head with the first shield support 20-1 and the second shield support 20-2 by manual pulling is shortened.
The invention uses a plurality of caterpillar bands to replace the terrace construction, thereby realizing the purpose of shortening the installation and withdrawal period of the working surface. Installation withdrawal passageway bottom plate adopts the design of laying the track, can realize safe quick installation of support and withdrawal, the track can be dismantled the adjustment according to the working face installation withdrawal condition, also can install simultaneously by the segmentation, and utilize the old and useless track of scrapping track equipment or the machine of digging is combined in the colliery to bring and replace, reduce the input of concrete and other materials, not only practice thrift the cost, and it is very convenient to use, the working face has also been simplified simultaneously and has utilized the winch to pull the process of moving the shield support, the track of laying directly can be regarded as the fulcrum of pulling the support, realize the support withdrawal through the support self-moving, shield the support and directly pull with the track connecting plate and move, simplify the construction process.
The method has the characteristics of high construction speed, simple and convenient installation and laying operation, high removal and transportation efficiency, few links, low capital and manual investment, high use reuse rate of the crawler, no strict limitation of the flatness of the bottom plate on laying conditions and the like, achieves the aim of shortening the construction period of installation and withdrawal projects, realizes the project investment and production 5 days ahead compared with the modes of pouring concrete and other hardened bottom plates, can produce 10 million tons of coal 5 days ahead according to the calculation of 500 million tons of mine productivity, and creates good economic benefit.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (8)
1. A working face bottom plate assembly is characterized by comprising an upper end crawler belt, an upper transition crawler belt, a plurality of middle crawler belts, a lower transition crawler belt and a lower end crawler belt which are installed section by section from top to bottom;
an upper anchor rod fixing hole is formed in the upper end track and is inserted into the upper anchor rod fixing hole through an anchor rod to be fixed with the bottom plate;
the upper side of the upper transition crawler is connected with the lower side of the upper end crawler through a first pin shaft, and the lower side of the upper transition crawler is connected with the upper side of the uppermost intermediate crawler through a shear pin;
the plurality of intermediate tracks are sequentially connected, adjacent intermediate tracks are connected through the shearing pin, when the working face support is withdrawn, the intermediate tracks above the lower transition tracks are removed section by section from bottom to top until the intermediate tracks are recovered to a support to be recovered at the upper opening of the working face, and the working face bottom plate assembly is integrally removed;
the lower side of the middle crawler belt at the lowest end is connected with the upper side of the lower transition crawler belt through the shearing pin, and the lower side of the lower transition crawler belt is connected with the upper side of the lower end crawler belt through a second pin shaft;
and a lower anchor rod fixing hole is formed in the lower end crawler and is inserted into the lower anchor rod fixing hole through an anchor rod to be fixed with the bottom plate.
2. The working face bottom plate assembly according to claim 1, further comprising special crawler belts, wherein the special crawler belts are located between two adjacent upper and lower middle crawler belts, each of the special crawler belts is connected with two rows of the middle crawler belts, middle anchor rod fixing holes are formed in the left and right ends of each of the special crawler belts, and the special crawler belts are inserted into the middle anchor rod fixing holes through the anchor rods and fixed with the bottom plate.
3. The floor assembly of claim 2, wherein the special crawler belts are installed every 20m to 30m in a length direction of the floor, and both ends of the special crawler belts protrude from ends of the middle crawler belt by a length of 300 mm.
4. The working face bottom plate assembly according to claim 1, further comprising a track recovery connecting plate, wherein a plurality of reserved pin holes are formed in each of the upper side and the lower side of the track recovery connecting plate, the upper side of the track recovery connecting plate is connected with the lower sides of the two lower transition tracks, the upper side of the lower transition track is connected with the lower side of the middle track, and the lower side of the track recovery connecting plate is used for connecting two shield support pushing heads.
5. A method of installing and retracting a work surface frame using a work surface base plate assembly according to any one of claims 1 to 4, comprising the steps of:
before the working face support is installed, the working face bottom plate components are sequentially laid from top to bottom;
when the working face support is installed, the support to be installed is pulled to the working face bottom plate assembly and is pulled to the position to be installed along the length direction of the working face bottom plate assembly, and direction adjustment installation is carried out;
after the working face support is installed, the working face bottom plate assembly is disassembled and recycled section by section from bottom to top;
before the working face support is retracted, the working face bottom plate assembly is paved again from top to bottom in sequence;
when the working face support is retracted, the support to be recovered is pulled to the upper opening of the working face to be recovered along the working face bottom plate assembly.
6. The method of claim 5, wherein the step of pulling the work surface support to be retrieved along the work surface base plate assembly to the work surface upper opening for retrieval when the work surface support is retracted further comprises the steps of:
step 501: after the first support is pulled out and turned from bottom to top, a first shield support is formed, a second support is pulled out and turned to form a second shield support, after the third support is pulled out and turned to the back, the third support is pulled to the paved bottom plate assembly of the working face by a winch and is pulled to the upper opening of the working face, and the third support is turned by the winch and then is recovered;
step 502: the working face bottom plate assembly is dismantled to the position below a fourth support from bottom to top section by section, the lower transition crawler belt and the crawler belt recovery connecting plate are installed, and the crawler belt recovery connecting plate is connected with the shield support pushing head;
step 503: pulling the fourth bracket to the upper opening of the working surface for recycling along the working surface bottom plate component paved in the step 502;
step 504: then the middle crawler belt above the lower transition crawler belt is dismantled section by section to the position below the next support to be recovered, and then the middle crawler belt and the lower transition crawler belt are connected;
step 505: pulling the next bracket to be recovered to the upper opening of the working surface to be recovered along the working surface bottom plate component paved in the step 504;
step 506: and repeating the steps 504 and 505 until the support to be recovered is recovered to the upper opening of the working surface, and dismantling and recovering the whole support.
7. The method of claim 5, wherein the step of laying the work surface floor assembly in sequence from top to bottom prior to installing the work surface frame further comprises the steps of:
inserting the anchor rod into the upper anchor rod fixing hole of the upper end crawler to be fixed with the bottom plate at the position close to a winch on the upper part of the working surface;
connecting the lower side edge of the upper end crawler with the upper side edge of the upper transition crawler by using the first pin shaft;
connecting a lower side plate of the upper transition crawler to an upper side of the uppermost intermediate crawler by using the shear pin;
connecting a plurality of the intermediate tracks in sequence, wherein adjacent intermediate tracks are connected through the shear pins;
connecting the lower side of the middle crawler belt at the lowermost end with the upper side of the lower transition crawler belt by using the shear pin;
connecting the lower side edge of the lower transition crawler belt with the upper side edge of the lower end crawler belt by using the second pin shaft;
and inserting the anchor rod into the lower anchor rod fixing hole of the lower end part crawler belt to be fixed with the bottom plate.
8. A method of installing and retracting work surface brackets in accordance with claim 7 wherein the lower end track is installed 300mm beyond the first bracket at the lower mouth of the work surface prior to installation of the work surface brackets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810996175.0A CN109386305B (en) | 2018-08-29 | 2018-08-29 | Working face bottom plate assembly and working face support mounting and withdrawing method using same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810996175.0A CN109386305B (en) | 2018-08-29 | 2018-08-29 | Working face bottom plate assembly and working face support mounting and withdrawing method using same |
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| CN109386305B true CN109386305B (en) | 2020-06-23 |
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| CN201411611Y (en) * | 2009-04-22 | 2010-02-24 | 昊华中意玻璃钢有限公司 | Composite light rigid pavement slab |
| CN106284018A (en) * | 2016-09-30 | 2017-01-04 | 中国人民解放军理工大学 | A kind of fast spreading standard road surface |
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