CN113006865A - Coal mine goaf administers and backfill slurrying slip casting device that sinks - Google Patents
Coal mine goaf administers and backfill slurrying slip casting device that sinks Download PDFInfo
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- CN113006865A CN113006865A CN202110429818.5A CN202110429818A CN113006865A CN 113006865 A CN113006865 A CN 113006865A CN 202110429818 A CN202110429818 A CN 202110429818A CN 113006865 A CN113006865 A CN 113006865A
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- barrel
- rod
- grouting
- cylinder
- drill bit
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- 239000003245 coal Substances 0.000 title claims abstract description 18
- 238000007569 slipcasting Methods 0.000 title description 8
- 239000011440 grout Substances 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000004537 pulping Methods 0.000 claims abstract description 7
- 239000011324 bead Substances 0.000 claims description 26
- 239000011521 glass Substances 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 43
- 238000000034 method Methods 0.000 abstract description 9
- 239000002002 slurry Substances 0.000 abstract description 5
- 239000011435 rock Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a coal mine goaf treatment and collapse backfill pulping and grouting device, which solves the problems that in the coal mine goaf treatment process in the prior art, the working efficiency is low, the labor intensity of workers is high, and the grouting port cannot be sealed in time after grouting is finished, so that the grout outflow and the hole sealing difficulty are high; the screw rod is supported by the drilling machine for drilling, the screw rod does not need to be pulled out after drilling, the stop plug and the sealing rubber plug automatically seal the drilled hole, a grouting pump switch is directly opened to perform high-pressure grouting on the grouting hole, after grouting is finished, the screw rod is separated from the sealing rubber plug under the action of the drilling machine, the sealing rubber plug is left in the grouting hole under the support of the second cylinder and the arc-shaped plate, and the grouting hole is continuously sealed; the method is simple to operate, saves the operation space of workers in the goaf treatment, improves the working efficiency, reduces the labor intensity of the workers, and effectively solves the problems of difficult slurry backflow and hole sealing after grouting.
Description
Technical Field
The invention relates to the technical field of coal mine goaf filling equipment, in particular to a coal mine goaf treatment and collapse backfill pulping and grouting device.
Background
In general, in a goaf left in a coal mining operation process of a coal mine, a thicker direct roof exists above a working face of the goaf under the coal mine, and the direct roof mainly has the characteristics of large thickness of a rock stratum, low strength of the rock stratum, high crack development degree, poor integrity, low self-stability capability and the like, so that roof fall and collapse phenomena easily occur on a working face roof and a roadway roof in the mining process, roof leakage accidents occur if the roof fall and collapse phenomena cannot be supported and controlled in time, and the roof leakage range is enlarged more and more. In order to prevent the broken roof from occurring a collapse-leaking accident, the broken roof needs to be controlled in advance before a local roof leakage occurs, and the support and control of the broken roof are mainly carried out by methods of reinforcing geological exploration, reinforcing construction management, advance support of a structural part, drilling and grouting at a roadway and the like in the prior art. When the method for drilling and grouting at the roadway is adopted, a drill rod is generally used for drilling a direct roof or a roadway roof, the drill rod is pulled out after drilling is finished, then a grouting rod is inserted, a rubber grout stop plug is arranged on the grouting rod, a compressed air switch on the grouting rod is started to enable the rubber grout stop plug to expand and seal a grouting hole, the grouting switch is opened after sealing to enable grout to fill the grouting hole, the grout is filled along a top plate rock seam or a seam between coal layers under high pressure, grouting is stopped when the pressure reaches stable pressure, compressed air is turned off to enable the rubber grout stop plug to recover the original state, the grouting hole is pulled out along with the grouting rod, and then next position is punched and grouted.
However, in the prior art, because there are many direct roofs and roadways in a goaf under a mine, the direct roof area is large, the engineering quantity is large, the working efficiency is low by adopting a grouting mode of drilling first and then grouting separately, the labor intensity of workers is high, secondly, the rubber grout stop plug needs to adopt compressed air to seal a grouting opening, and in a narrow mine, the compressor occupies space, so that the construction of the workers is inconvenient.
Disclosure of Invention
In order to solve the technical problems, the invention provides a coal mine goaf treatment and collapse backfill slurrying grouting device, which aims to solve the problems of low working efficiency, high labor intensity of workers and small construction space in the whole using process and also solve the problems that a grouting hole cannot be continuously sealed and the hole sealing difficulty is high after grouting is finished.
The solution is as follows: a coal mine goaf treatment and collapse backfill pulping and grouting device comprises a screw rod with a vertical axis, a first cylinder is sleeved on the screw rod, the upper end of the first cylinder is rotatably connected with the screw rod, a discharge hole is formed in the upper end of the side wall of the first cylinder, a sliding frame positioned above the first cylinder is sleeved on the screw rod, a first spring positioned between the upper end surface of the sliding frame and the upper end of the screw rod is sleeved on the screw rod, a stud with a vertical axis is arranged on the sliding frame, a stud nut is sleeved on the stud, the stud and the stud nut are in spiral transmission, a fixing frame is rotatably connected on the screw rod, the lower end of the fixing frame is rotatably connected with the stud nut, a cylindrical cam with a vertical axis is rotatably connected on the fixing frame, the cylindrical cam and the stud nut are in transmission through a gear pair, a grout stop plug is sleeved on the screw rod and positioned above the discharge hole, and a cam push rod matched with the cylindrical cam, the cam push rod is positioned in the cam groove of the cylindrical cam;
the first barrel and the stud nut are in gear pair transmission, the first barrel is sleeved with a second barrel, the second barrel is positioned below the discharge port, the second barrel is coaxially connected with a sealing rubber plug, a plurality of moving rods are uniformly distributed on the circumference of the outer side wall of the second barrel, the axes of the moving rods are radially arranged along the second barrel, the moving rods radially slide along the second barrel, one end of each moving rod, which is far away from the second barrel, is connected with an arc plate, the outer side wall of the arc plate is attached to the inner side wall of the sealing rubber plug, a plurality of ratchet racks are uniformly distributed on the circumference of the outer side wall of the second barrel, the plurality of ratchet racks are positioned below the moving rods, the plurality of ratchet racks are in one-to-one correspondence with the plurality of arc plates, the ratchet racks are positioned on the upper end faces of the ratchet racks, the plurality of ratchet racks are radially arranged along the second barrel, the moving rods are provided with pawls matched with the ratchet racks, the pawls are in elastic sliding, a plurality of circular arc through grooves distributed along the circumference are vertically arranged on the upper end surface of the rotary table, the circular arc through grooves correspond to a plurality of pawls one by one, the upper ends of the pawls penetrate through the circular arc through grooves, a limiting rod with a vertical axis is arranged on the upper end surface of the arc plate, a plurality of limiting grooves corresponding to the limiting rods one by one are arranged at the bottom end of the sliding frame, the length direction of the limiting grooves is arranged along the radial direction of the first barrel, the top end of the limiting rod is arranged in the limiting groove and is in sliding contact with the limiting grooves, a first rack arranged along the radial direction of the second barrel is elastically and slidably connected onto the second barrel, teeth on the first rack face downwards vertically, the first rack slides along the radial direction of the second barrel, a first gear meshed with the first rack is rotatably connected onto the second barrel, an opening and closing door is hinged at the lower end of the second barrel, a first sector gear meshed with the first gear is arranged at the upper, the lower end surface of the screw rod is coaxially connected with a drill bit positioned below the grout outlet.
Preferably, a plurality of cylindrical grooves are circumferentially distributed on the inner side wall of the second barrel, the axes of the cylindrical grooves are radially arranged along the second barrel, positioning glass beads arranged in the cylindrical grooves are connected to the cylindrical grooves in a sliding mode, the positioning glass beads radially slide along the second barrel, annular grooves are formed in the outer side wall of the first barrel, one end of each positioning glass bead is arranged in each annular groove, and the other end of each positioning glass bead is arranged in each cylindrical groove.
Preferably, the hob lower extreme articulates along the circumferencial direction has a plurality of grout outlet doors, a plurality of grout outlet doors and a plurality of grout outlet one-to-one, and the hob is connected through the torsional spring with grout outlet door, grout outlet door and grout outlet phase-match.
Preferably, the coaxial coupling has the ejector pin on the drill bit, the ejector pin is along drill bit endwise slip, be connected with the second spring that is located between ejector pin up end and the drill bit on the ejector pin, ejector pin lateral wall upper end circumference equipartition has a plurality of second racks of vertical setting, it is connected with a plurality of second gears with a plurality of second rack one-to-one meshing to rotate on the drill bit, it is connected with a plurality of drilling rods along the circumference distribution to rotate on the drill bit, a plurality of drilling rods and a plurality of second gear one-to-one, the drilling rod upper end is equipped with the second fan gear with second gear meshing, the terminal surface is equipped with the vertical a plurality of little drill bits that set up of axis under the drill bit, the lower terminal surface of little drill.
Preferably, the epaxial articulated press switch that has through the level setting of drill bit lateral wall, press switch arranges in the drill bit in the upper end, press switch lower extreme arranges in outside the drill bit lateral wall, press switch is along drill bit radial sliding, the epaxial articulated first connecting rod of arranging in the drill bit that has through the level setting on the drill bit, the vertical setting of first connecting rod axis, first connecting rod lower extreme is articulated through the axis that the level set up with press switch, the upper end of first connecting rod is articulated through the axis that the level set up has the locating lever, the locating lever axis radially sets up along the drill bit, the locating lever is along the radial and drill bit elastic sliding connection of drill bit, the ejector pin upper end is the wedge, the locating lever left end is the wedge, ejector pin upper end wedge.
In summary, the technical scheme of the invention at least has the following beneficial effects:
1. after the drilling of the screw rod is finished, the grouting opening can be automatically sealed, and an air compressor is not needed in the whole process, so that the cost and the space are saved;
2. after the drilling of the screw rod is finished, the screw rod does not need to be pulled out, and grouting can be directly performed, so that the labor intensity of workers is reduced, and the working efficiency is improved;
3. after the screw rod is pulled out after grouting, the grouting hole is automatically sealed, and the problems of slurry backflow and large hole sealing difficulty after grouting are effectively solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a front sectional view of the present invention.
Fig. 3 is a schematic diagram of an enlarged portion a of fig. 2 according to the present invention.
Fig. 4 is a schematic diagram of a portion of the structure of B in fig. 2 according to the present invention.
Fig. 5 is a schematic diagram of a portion of the structure of C in fig. 2 according to the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a screw rod; 2. a first cylinder; 3. a discharge outlet; 4. a carriage; 5. a first spring; 6. a stud; 7. a stud nut; 8. a fixed mount; 9. a cylindrical cam; 10. a grout stopping plug; 11. a second cylinder; 12. sealing the rubber plug; 13. a travel bar; 14. an arc-shaped plate; 15. a ratchet bar; 16. a pawl; 17. a limiting rod; 18. a limiting groove; 19. a first rack; 20. a first gear; 21. opening and closing the door; 22. a cylindrical groove; 23. positioning the glass beads; 24. a slurry outlet door; 25. a drill bit; 26. a top rod; 27. a second rack; 28. a second gear; 29. a drill stem; 30. a small drill bit; 31. a push switch; 32. a first link; 33. positioning a rod; 34. a second spring; 35. a third gear; 36. a fourth gear; 37. a fifth gear; 38. a sixth gear; 39. a third spring; 40. a fourth spring; 41. a fifth spring; 42. a sixth spring; 43. a turntable; 44. and an arc through groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes the embodiments of the present invention in further detail with reference to fig. 1 to 5.
Embodiment 1, a coal mine goaf treatment and subsidence backfill slurrying grouting device, which comprises a screw rod 1 with a vertical axis, wherein the screw rod 1 is of a hollow structure, the upper end of the screw rod 1 is connected with a drilling machine, the drilling machine supports and drives the screw rod 1, the upper end of the screw rod 1 is communicated with a grouting pump, the grouting pump is used for grouting after drilling, helical blades are wound on the outer side wall of the screw rod 1, a first cylinder 2 is sleeved on the screw rod 1, the helical blades are arranged in the first cylinder 2, the upper end of the screw rod 1 without the helical blades is arranged above the first cylinder 2, the upper end of the first cylinder 2 is rotatably connected with the screw rod 1 through a bearing, a plurality of discharge ports 3 are arranged at the upper end of the outer side wall of the first cylinder 2, the discharge ports 3 are used for discharging rock fragments drilled during drilling, a sliding frame 4 positioned above the first cylinder 2 is sleeved on the screw rod 1, the screw rod 1 is sleeved with a first spring 5 positioned between the upper end surface of the sliding frame 4 and the upper end of the screw rod 1, the lower end of the first spring 5 is connected with the upper end surface of the sliding frame 4, the upper end of the first spring 5 is rotatably connected with the screw rod 1 through a bearing, the first spring 5 provides a vertical downward thrust for the sliding frame 4, the sliding frame 4 is provided with a stud 6 with a vertically arranged axis, the upper end of the stud 6 is fixedly connected with the sliding frame 4, the lower end of the stud 6 is sleeved with a stud nut 7, the stud 6 and the stud nut 7 are in spiral transmission, in a top view, when the stud 6 moves upwards relative to the stud nut 7, the stud nut 7 rotates anticlockwise, the screw rod 1 is rotatably connected with a fixed frame 8 through the bearing, the lower end of the fixed frame 8 is rotatably connected with the stud nut 7 through the bearing, the fixed frame 8 is rotatably connected with a cylindrical cam 9 with a vertically arranged axis, and the cylindrical cam 9 consists of, a third gear 35 positioned below the cam groove is sleeved on the cylindrical cam 9, a fourth gear 36 meshed with the third gear 35 is sleeved on the stud nut 7, a stop-grouting plug 10 is sleeved on the screw rod 1, the stop-grouting plug 10 is positioned between the discharge port 3 and the upper end face of the first barrel 2, a cam push rod matched with the cam groove is arranged on the stop-grouting plug 10, the cam push rod is positioned in the cam groove, in the front view direction, the cam push rod is positioned at the highest point of the cam groove in the initial state, when the sliding frame 4 drives the stud 6 to move upwards relative to the screw rod 1, the stud 6 drives the stud nut 7 to rotate anticlockwise under the action of the spiral groove and the push rod, the stud nut 7 drives the cylindrical cam 9 to rotate clockwise under the action of the fourth gear 36 and the third gear 35, the cylindrical cam 9 drives the stop-grouting plug 10 to move vertically downwards under the action of the cam groove and the cam, preventing the slurry from flowing out of the discharge port 3 during high-pressure grouting;
the stud nut 7 is sleeved with a fifth gear 37, the upper end of the first cylinder 2 is sleeved with a sixth gear 38 meshed with the fifth gear 37, the first cylinder 2 is sleeved with a second cylinder 11, the outer side wall of the first cylinder 2 is in sealing sliding contact with the inner side wall of the second cylinder 11, the second cylinder 11 is positioned below the discharge port 3, the second cylinder 11 is sleeved with a sealing rubber plug 12, the sealing rubber plug 12 is cylindrical, the lower end of the sealing rubber plug 12 is connected with the lower end of the second cylinder 11, the sealing rubber plug 12 is positioned below the discharge port 3, when drilling is carried out, after the sealing rubber plug 12 completely enters a drill hole, the lower end face of the sliding frame 4 is in friction contact with a rock wall, the spiral rod 1 moves downwards under the thrust action of a drilling machine, the rock wall provides a vertical upward reaction force for the sliding frame 4, a plurality of moving rods 13 with axial lines arranged along the radial direction of the second cylinder 11 are evenly distributed on the circumference of the outer side wall of the, the movable rod 13 slides along the radial direction of the second cylinder 11, one end of the movable rod 13 far away from the axis of the second cylinder 11 is connected with an arc plate 14, the arc plate 14 is positioned between the inner side wall of the sealing rubber plug 12 and the outer side wall of the second cylinder 11, the outer side wall of the arc plate 14 is attached to the inner side wall of the sealing rubber plug 12, in an initial state, the arc plates 14 enclose a cylindrical cylinder, when the arc plates 14 move along the radial direction of the second cylinder 11 outwards under the driving of the movable rod 13, the inner side wall of the sealing rubber plug 12 can be enlarged under the support of the outer side wall of the arc plate 14, a plurality of ratchet bars 15 positioned below the movable rod 13 are evenly distributed on the circumference of the outer side wall of the second cylinder 11, the ratchet bars 15 correspond to the arc plates 14 one by one, each ratchet bar 15 comprises a toothed plate and a plurality of ratchet teeth positioned on the upper end surface of the toothed plate, the ratchet teeth are arranged along the radial direction of the second cylinder, the pawl 16 is sleeved with a third spring 39 positioned between the lower end surface of the moving rod 13 and the pawl 16, the third spring 39 provides a vertical downward thrust for the pawl 16, the pawl 16 is in sliding contact with the ratchet rack 15, the first barrel 2 is rotatably connected with a rotating disc 43 through a one-way bearing, the rotating disc 43 is positioned between the upper end surface of the second barrel 11 and the sixth gear 38, in a overlooking view angle, when the first barrel 2 rotates clockwise, the one-way bearing is locked, the first barrel 2 drives the rotating disc 43 to rotate clockwise, when the first barrel 2 rotates anticlockwise, the one-way bearing is unlocked, the rotating disc 43 cannot rotate anticlockwise along with the first barrel 2, the upper end surface of the rotating disc 43 is vertically provided with a plurality of circular arc through grooves 44 distributed along the circumference, the circular arc through grooves 44 correspond to the pawls 16 one by one, in the overlooking view angle, the starting end of the circular arc through grooves 44 in the clockwise direction is far away from the axis of the rotating disc 43, the upper end of the pawl 16 penetrates through the circular arc through groove 44, in an initial state, the upper end of the pawl 16 is located at one end, close to the axis of the rotary table 43, of the circular arc through groove 44, when the rotary table 43 rotates clockwise, the pawl 16 is acted by the circular arc through groove 44 to enable the pawl 16 to do centrifugal motion along the radial direction of the second barrel 11 deviating from the axis of the second barrel 11, the pawl 16 drives the moving rod 13 to slide along the direction deviating from the axis of the second barrel 11, the moving rod 13 drives the arc plate 14 to move along the direction deviating from the axis of the second barrel 11, the arc plate 14 pushes the side wall of the rubber seal 12 to expand outwards, the arc plate 14 enables the arc plate 14 to only do single-pass motion along the radial direction of the second barrel 11 away from the axis of the second barrel 11 under the action of the pawl 16 and the ratchet rack 15, the upper end face of the arc plate 14 is provided with the limiting rod 17 with the vertical axis, the bottom end of the sliding frame 4 is, the limiting groove 18 is radially arranged along the first barrel 2 in the length direction, the upper end of the limiting rod 17 is arranged in the limiting groove 18 and is in sliding contact with the limiting groove 18, when the turntable 43 drives the pawl 16 to move, the limiting rod 17 on the arc-shaped plate 14 is limited by the limiting groove 18, so that the arc-shaped plate 14 can only radially slide along the second barrel 11, and the arc-shaped plate 14 cannot rotate; the second cylinder 11 is connected with a first rack 19 which is arranged along the radial direction of the second cylinder 11 in a sliding way, a fourth spring 40 is arranged between the first rack 19 and the second cylinder 11, the fourth spring 40 provides the first rack 19 with a thrust force towards the axial direction of the first cylinder 2, teeth on the first rack 19 are vertically downward, the first rack 19 slides along the radial direction of the second cylinder 11, the second cylinder 11 is connected with a first gear 20 which is meshed with the first rack 19 in a rotating way, the lower end of the second cylinder 11 is hinged with an opening and closing door 21 through a shaft which is horizontally arranged, the upper end of the opening and closing door 21 is provided with a first sector gear which is meshed with the first gear 20, when the first rack 19 is extruded by the outer side wall of the first cylinder 2, the first rack 19 slides along the radial direction of the second cylinder 11 in the direction away from the axis of the second cylinder 11, the first rack 19 drives the first gear 20 to rotate, and the first gear 20 drives the first sector gear to rotate; when the first rack 19 moves to the stroke end, the opening and closing door 21 is in an opening state under the action of the first gear 20 and the first sector gear, so that the opening and closing door 21 is separated from the lower end face of the second cylinder 11; when first barrel 2 for the vertical rebound of second barrel 11 to with the separation of first rack 19, first rack 19 resets under the effect of fourth spring 40, first rack 19 drives first gear 20 reversal, the door 21 that opens and shuts resets under the effect of first gear 20 and first sector gear, 11 bottoms of second barrel are sealed by the door 21 that opens and shuts this moment, 1 lower extreme circumference of hob distributes has a plurality of grout outlets, coaxial connection has drill bit 25 that is located grout outlet below on the 1 lower terminal surface of hob.
Embodiment 2, on the basis of embodiment 1, a plurality of cylindrical grooves 22 are circumferentially distributed on the inner side wall of the second cylinder 11, the axes of the cylindrical grooves 22 are radially arranged along the second cylinder 11, positioning beads 23 are slidably connected to the cylindrical grooves 22, a fifth spring 41 is connected between the bottom wall of the cylindrical grooves 22 and the positioning beads 23, the fifth spring 41 gives a thrust force to the positioning beads in the direction toward the axis of the first cylinder 2, an annular groove is formed on the outer side wall of the first cylinder 2, one end of the positioning beads 23 is arranged in the annular groove, the other end of the positioning beads 23 is arranged in the cylindrical grooves 22, when the first cylinder 2 passes through the second cylinder 11 and moves to the outer side wall of the first cylinder 2 to be in contact with the positioning beads 23, the positioning beads 23 are pressed by the outer side wall of the first cylinder 2, and the positioning beads 23 move in the direction away from the axis of the first cylinder 2 along the radial direction of the first cylinder 2; when the annular groove moves to the cylindrical groove 22, the positioning glass bead 23 moves towards the direction close to the axis of the first cylinder 2 under the action of the fifth spring 41, one end of the positioning glass bead 23 is arranged in the groove, and the other end of the positioning glass bead 23 is arranged in the cylindrical groove 22; under the condition that the second cylinder 11 is not subjected to external force, the second cylinder 11 cannot slide relative to the first cylinder 2 under the action of the positioning glass beads 23, and the second cylinder 11 and the first cylinder 2 can rotate relative to each other, when the radial force of the positioning glass beads given by the outer side wall of the first cylinder 2 along the second cylinder 11 is greater than the thrust of the fifth spring 41, the positioning glass beads move in the direction away from the axis of the first cylinder 2, under the initial state, the second cylinder 11 cannot vertically slide relative to the first cylinder 2 under the action of the positioning glass beads 23, when the first cylinder 2 is subjected to a greater vertical upward force, the thrust of the outer side wall of the first cylinder 2 on the positioning glass beads 23 is greater than the thrust of the fifth spring 41, and the first cylinder 2 vertically slides relative to the second cylinder 11.
Embodiment 4, on the basis of embodiment 1, the drill 25 is provided with an ejector rod 26 coaxially arranged with the drill 25, the ejector rod 26 slides along the axial direction of the drill 25, the ejector rod 26 is connected with a second spring 34 positioned between the upper end surface of the ejector rod 26 and the drill 25, the second spring 34 gives a vertical downward thrust to the ejector rod 26, a plurality of second racks 27 vertically arranged are uniformly distributed on the circumference of the upper end of the outer side wall of the ejector rod 26, the drill 25 is rotatably connected with a plurality of second gears 28 meshed with the plurality of second racks 27 in a one-to-one correspondence manner, the drill 25 is rotatably connected with a plurality of drill rods 29 distributed along the circumferential direction, the plurality of drill rods 29 are corresponding to the plurality of second gears 28 in a one-to-one correspondence manner, in the initial state, the axial line of the drill rod 29 is in a vertical state, the upper end of the drill rod 29 is provided with a second sector gear meshed with the second gear 28, when the ejector rod, the rack on the mandril 26 drives the second gear 28 to rotate, the second gear 28 drives the second sector gear to rotate, the lower end of the drill rod 29 moves away from the axial direction of the drill bit 25 under the action of the second sector gear, and the drill rod 29 is opened at the moment; when the drill bit 25 drills, the diameter of a hole drilled by the drill rod 29 is larger than the diameter of the sealing rubber plug 12 in the initial state, so that the sealing rubber plug 12 can enter the drilled hole after drilling; the lower end face of the drill 25 is provided with a plurality of drill bits 30 with axes vertically arranged, the lower end face of each drill bit 30 is located above the lower end face of the ejector rod 26, the purpose is that when drilling is started, the ejector rod 26 can be pushed by a rock wall to move vertically upwards, and the ejector rod 26 can drive the drill rod 29 to open when moving upwards.
Embodiment 5, on the basis of embodiment 4, the outer side wall of the drill 25 is hinged with a push switch 31 through a horizontally arranged shaft, the upper end of the push switch 31 is arranged in the drill 25, the lower end of the push switch 31 is arranged outside the side wall of the drill 25, the drill 25 is hinged with a first connecting rod 32 arranged in the drill 25 through a horizontally arranged shaft, the axis of the first connecting rod 32 is vertically arranged, the lower end of the first connecting rod 32 is hinged with the push switch 31 through a horizontally arranged shaft, the upper end of the first connecting rod 32 is hinged with a positioning rod 33 through a horizontally arranged shaft, the axis of the positioning rod 33 is arranged along the radial direction of the drill 25, the positioning rod 33 is connected with the drill 25 in a sliding manner along the radial direction of the drill 25, the positioning rod 33 is sleeved with a sixth spring 42 arranged between the left end of the positioning rod 33 and the drill 25, the sixth spring 42 provides a thrust of the positioning rod 33 towards the axial direction of the drill 25 along, the wedge-shaped surface at the upper end of the ejector rod 26 is in sliding contact with the wedge-shaped surface of the positioning rod 33, when the ejector rod 26 moves vertically upwards, the second spring 34 is compressed, and the wedge-shaped surface on the ejector rod 26 is in sliding contact with the wedge-shaped surface on the movable rod 13; when the ejector rod 26 then moves upwards, the moving rod 13 moves along the drill bit 25 in a direction away from the axis of the drill bit 25 in the radial direction under the action of the wedge-shaped surface of the ejector rod 26; when the push rod 26 moves to the position that the wedge-shaped surface of the push rod 26 is separated from the wedge-shaped surface of the movable rod 13, the movable rod 13 is reset under the action of the sixth spring 42, the push rod 26 is locked under the action of the movable rod 13, and the drill rod 29 is in a locked state along with the locking of the push rod 26; pressing press switch 31, travel bar 13 is along the radial direction of drill bit 25 to the direction of keeping away from the drill bit 25 axis under first link 32 and press switch 31's effect and is moved, when travel bar 13 moved to formation end, ejector pin 26 was unlocked, ejector pin 26 received the vertical downward thrust of second spring 34 and resets, drilling rod 29 resets under the effect of ejector pin 26 and second gear 28, when first barrel 2 and second barrel 11 separated, press switch 31 on the drill bit 25 can be extruded by first barrel 2 inside wall, press switch 31 is extruded back ejector pin 26 and drilling rod 29 and can take place to reset, drill bit 25 can take drilling rod 29 to pass through second barrel 11 this moment.
When the drilling machine is used, firstly, before drilling begins, the upper end of a screw rod 1 is connected with a drilling machine, the drilling machine drives the screw rod 1 to rotate, the upper end of the screw rod 1 is communicated with an injection pump, when the drilling machine supports the screw rod 1 to drill, the screw rod 1 is driven by the drilling machine to rotate clockwise, an ejector rod 26 on a drill bit 25 is extruded by a rock wall to move vertically upwards, the ejector rod 26 drives a drill rod 29 to rotate, the drill rod 29 extends outwards along the radial direction of the drill bit 25, when the ejector rod 26 moves to a state locked by a positioning rod 33, the opening state of the drill rod 29 is also locked, and drilling begins; when drilling is carried out, the drilling redundant waste rock slag can be brought to a discharge port 3 by a helical blade on a helical rod 1 and discharged; when the sealing rubber plug 12 moves to completely enter the grouting hole, the lower end face of the sliding frame 4 is attached to the rock wall, and the lower end face of the sliding frame 4 is kept still under the friction force of the rock wall; at the moment, the drilling machine pushes the screw rod 1, the sliding frame 4 vertically slides upwards relative to the screw rod 1, the stud 6 on the sliding frame 4 vertically moves upwards relative to the stud nut 7, the stud nut 7 rotates anticlockwise, the stud nut 7 drives the cylindrical cam 9 and the first barrel 2 to rotate clockwise under the transmission of the gear transmission pair, the cylindrical cam 9 drives the grout stop plug 10 to move vertically downwards until the grout stop plug 10 completely seals the discharge opening 3, the first barrel 2 drives the rotary disc 43 to rotate clockwise, the rotary disc 43 drives the pawl 16 to move radially outwards along the first barrel 2 under the action of the arc through groove 44, the pawl 16 drives the moving rod 13 to move synchronously, the moving rod 13 drives the arc plate 14 to move synchronously, the arc plate 14 extrudes the sealing rubber plug 12, the outer diameter of the sealing rubber plug 12 is increased by the extrusion of the arc plate 14, when the sliding frame 4 drives the stud 6 to move vertically upwards to the tail end of the stroke, the outer side wall of the sealing rubber plug 12 is tightly attached to the inner side wall of the grouting hole, the grout stop plug seals the discharge hole, a closed space is formed inside the grouting hole, when the sliding frame 4 moves to the tail end of the stroke relative to the screw rod 1, the rotation of the screw rod 1 is stopped, the grouting pump is opened to start high-pressure grouting, the grout outlet door 24 is opened under the pressure of high-pressure grout, the grout flows out from the grout outlet to fill the whole grouting hole, the grout cannot flow outwards due to the sealing effect of the sealing rubber plug 12 and the grout stop plug 10, when the grout fills the whole grouting hole, the grout in the grouting hole flows to all sides of the rock through rock gaps under a high-pressure state, after the grouting pressure is stable, the high-pressure grouting is finished, the grouting pump is closed, the screw rod 1 rotates anticlockwise, the screw rod 1 and the first cylinder 2 begin to be pulled out, the grouting pump is opened simultaneously, low-pressure grouting is adopted by the grouting pump, and the aim of filling the volume left after the screw rod 1 and the first cylinder 2 are, because the sealing rubber plug 12 is always attached to the inner wall of the grouting hole under the action of the arc-shaped plate 14 and the ratchet pawl 16 and is in an extrusion sealing state, when the drilling machine drives the screw rod 1 to be pulled out, the sliding frame 4 is reset, the grout stop plug 10 is reset, the turntable 43 is separated from the pawl 16, the positioning glass bead 23 moves into the cylindrical groove 22 under the action of the outer side wall of the first cylinder 2, the first cylinder 2 and the second cylinder 11 generate relative sealing sliding, at the moment, when the screw rod 1 rotates anticlockwise, grout in the first cylinder 2 is continuously driven to enter the grouting hole, the grout and grout flowing out from the grout outlet at low pressure fill the cavity volume left when the screw rod 1 and the first cylinder 2 are pulled out of the grouting hole, when the screw rod 1 moves to the press switch 31 on the drill bit 25 to be in contact with the inner side wall at the lower end of the second cylinder 11, the press switch 31 is extruded by the inner side wall of the second cylinder 11, and the positioning rod 33, the ejector rod 26 that is locked unblock, the ejector rod 26 resets under the effect of second spring 34, drilling rod 29 also resets simultaneously under the effect of ejector rod 26, drilling rod 29 on the drill bit 25 can pass second barrel 11 this moment, when first barrel 2 separates with second barrel 11, first rack 19 resets under the effect of fifth spring 41, the door 21 that opens and shuts is closed under the effect of first rack 19, door 21 and the terminal surface sealing contact under the second barrel 11 open and shut, final second barrel 11, arc 14 and sealed rubber buffer 12 can stay in the slip casting downthehole sealed effect that lasts to drilling, the effectual thick liquid outflow of slip casting back slip casting hole the inside of having avoided, only need overlap a second barrel 11 on first barrel 2 when carrying out next drilling slip casting, arc 14 and sealed rubber buffer 12, carry out next drilling slip casting.
In summary, the technical scheme of the invention at least has the following beneficial effects:
1. after the screw rod is drilled, the device can automatically seal the grouting opening, and an air compressor is not needed in the whole process, so that the cost and the space are saved;
2. after the drilling of the screw rod is finished, the screw rod does not need to be pulled out, and grouting can be directly performed, so that the labor intensity of workers is reduced, and the working efficiency is improved;
3. after the screw rod is pulled out after grouting, the grouting hole is automatically sealed, and the problems of slurry backflow and large hole sealing difficulty after grouting are effectively solved.
Claims (5)
1. A coal mine goaf treatment and collapse backfill pulping and grouting device comprises a screw rod (1) with a vertical axis, and is characterized in that a first cylinder (2) is sleeved on the screw rod (1), the upper end of the first cylinder (2) is rotatably connected with the screw rod (1), a discharge hole (3) is formed in the upper end of the side wall of the first cylinder (2), a sliding frame (4) positioned above the first cylinder (2) is sleeved on the screw rod (1), a first spring (5) positioned between the upper end surface of the sliding frame (4) and the upper end of the screw rod (1) is sleeved on the screw rod (1), a stud (6) with a vertical axis is arranged on the sliding frame (4), a stud nut (7) is sleeved on the stud (6), the stud (6) is in screw transmission with the stud nut (7), a fixing frame (8) is rotatably connected on the screw rod (1), the lower end of the fixing frame (8) is rotatably connected with the stud nut (7), a cylindrical cam (9) with a vertically arranged axis is rotatably connected to the fixed frame (8), the cylindrical cam (9) and the stud nut (7) are driven by a gear pair, a grout stop plug (10) is sleeved on the screw rod (1), the grout stop plug (10) is positioned above the discharge port (3), a cam push rod matched with the cylindrical cam (9) is arranged on the grout stop plug (10), and the cam push rod is positioned in a cam groove of the cylindrical cam (9);
the first barrel (2) and the stud nut (7) are in gear pair transmission, a second barrel (11) is sleeved on the first barrel (2), the second barrel (11) is positioned below the discharge port (3), a sealing rubber plug (12) is coaxially connected on the second barrel (11), a plurality of moving rods (13) are uniformly distributed on the outer side wall of the second barrel (11) along the radial direction of the second barrel (11), the moving rods (13) radially slide along the second barrel (11), one end of the moving rods (13) far away from the second barrel (11) is connected with an arc-shaped plate (14), the outer side wall of the arc-shaped plate (14) is attached to the inner side wall of the sealing rubber plug (12), a plurality of ratchet racks (15) positioned below the moving rods (13) are uniformly distributed on the outer side wall of the second barrel (11), the plurality of ratchet racks (15) are in one-to-one correspondence with the plurality of arc-shaped plates (14), the ratchet racks (15) are positioned on the upper end face of the ratchet racks (15), a plurality of ratchets on the ratchet bar (15) are arranged along the radial direction of the second cylinder body (11), a pawl (16) matched with the ratchet (16) bars (15) is arranged on the moving rod (13), the pawl (16) is in elastic sliding contact with the ratchet bar (15), a turntable (43) positioned above the second cylinder body (11) is connected on the first cylinder body (2) through a one-way bearing in a rotating way, a plurality of circular arc through grooves (44) distributed along the circumference are vertically arranged on the upper end surface of the turntable (43), the circular arc through grooves (44) are in one-to-one correspondence with the plurality of pawls (16), the upper end of the pawl (16) penetrates through the circular arc through grooves (44), a limiting rod (17) with the axis vertically arranged is arranged on the upper end surface of the arc plate (14), a plurality of limiting grooves (18) corresponding to the limiting rods (17) one-to-one are arranged at the bottom end of the sliding frame (4), and the length direction of the, spacing groove (18) are arranged in and with spacing groove (18) sliding contact on gag lever post (17) top, elastic sliding connection has along first rack (19) of second barrel (11) radial setting on second barrel (11) on the second barrel (11), the tooth on first rack (19) is vertical down, first rack (19) are along second barrel (11) radial sliding, it is connected with first gear (20) with first rack (19) meshing to rotate on second barrel (11), second barrel (11) lower extreme articulates there is door (21) that opens and shuts, door (21) upper end that opens and shuts is equipped with the first sector gear with first gear (20) meshing, the circumference of hob (1) lower extreme distributes has a plurality of grout outlets, coaxial coupling has drill bit (25) that are located grout outlet below on hob (1) the terminal surface down.
2. The coal mine goaf treatment and collapse backfill pulping and grouting device according to claim 1, characterized in that a plurality of cylindrical grooves (22) are circumferentially distributed on the inner side wall of the second cylinder (11), the axes of the cylindrical grooves (22) are radially arranged along the second cylinder (11), the cylindrical grooves (22) are slidably connected with positioning glass beads (23) arranged in the cylindrical grooves (22), the positioning glass beads (23) radially slide along the second cylinder (11), the outer side wall of the first cylinder (2) is provided with an annular groove, one end of each positioning glass bead (23) is arranged in the annular groove, and the other end of each positioning glass bead (23) is arranged in the cylindrical groove (22).
3. The coal mine goaf treatment and collapse backfill pulping and grouting device according to claim 1, characterized in that the lower end of the screw rod (1) is hinged with a plurality of grout outlet doors (24) along the circumferential direction, the plurality of grout outlet doors (24) are in one-to-one correspondence with the plurality of grout outlet openings, the screw rod (1) is connected with the grout outlet doors (24) through torsion springs, and the grout outlet doors (24) are matched with the grout outlet openings.
4. The coal mine goaf treatment and collapse backfill pulping and grouting device according to claim 1, characterized in that a mandril (26) is coaxially connected to the drill bit (25), the mandril (26) axially slides along the drill bit (25), a second spring (34) positioned between the upper end surface of the mandril (26) and the drill bit (25) is connected to the mandril (26), a plurality of second racks (27) which are vertically arranged are uniformly distributed on the circumference of the upper end of the outer side wall of the mandril (26), a plurality of second gears (28) which are meshed with the plurality of second racks (27) in a one-to-one correspondence manner are rotatably connected to the drill bit (25), a plurality of drill rods (29) which are distributed along the circumference are rotatably connected to the drill bit (25), a plurality of drill rods (29) are in one-to-one correspondence with the plurality of second gears (28), a second sector gear which is meshed with the second gears (28) is arranged at the upper end of the drill rods (29), a plurality of small drill bits (30), the lower end surface of the small drill bit (30) is positioned above the lower end surface of the mandril (26).
5. The coal mine goaf treatment and collapse backfill slurrying and grouting device according to claim 4, characterized in that a push switch (31) is hinged on the side wall of the drill bit (25) through a horizontally arranged shaft, the upper end of the push switch (31) is arranged in the drill bit (25), the lower end of the push switch (31) is arranged outside the side wall of the drill bit (25), the push switch (31) slides along the radial direction of the drill bit (25), a first connecting rod (32) arranged in the drill bit (25) is hinged on the drill bit (25) through a horizontally arranged shaft, the axis of the first connecting rod (32) is vertically arranged, the lower end of the first connecting rod (32) is hinged with the push switch (31) through a horizontally arranged shaft, the upper end of the first connecting rod (32) is hinged with a positioning rod (33) through a horizontally arranged shaft, the axis of the positioning rod (33) is arranged along the radial direction of the drill bit (25), the positioning rod (33) is elastically connected with the drill bit (25) in a sliding manner, the upper end of the ejector rod (26) is wedge-shaped, the left end of the positioning rod (33) is wedge-shaped, and the wedge-shaped surface at the upper end of the ejector rod (26) is in sliding contact with the wedge-shaped surface of the positioning rod (33).
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| CN202110429818.5A CN113006865B (en) | 2021-04-21 | 2021-04-21 | Coal mine goaf administers and backfill slurrying slip casting device that sinks |
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| CN113006865B CN113006865B (en) | 2021-12-31 |
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| CN113668503A (en) * | 2021-08-30 | 2021-11-19 | 段洪明 | Grouting device and grouting method for highway bridge construction |
| CN113832973A (en) * | 2021-11-05 | 2021-12-24 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Device is administered in mine side slope infiltration of open pit |
| CN114232400A (en) * | 2021-12-20 | 2022-03-25 | 济南市市政工程设计研究院（集团）有限责任公司 | Soft saturated soil subgrade settlement repairing device and method for expressway |
| CN115492550A (en) * | 2022-09-19 | 2022-12-20 | 吕梁学院 | Slip casting hole sealing device of hydraulic fracturing drilling in pit |
| CN115559776A (en) * | 2022-10-14 | 2023-01-03 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Goaf filling and grouting equipment |
| CN116357385A (en) * | 2023-05-30 | 2023-06-30 | 山西汾河焦煤股份有限公司回坡底煤矿 | Automatic filling equipment for small coal mine goaf |
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| CN116357385A (en) * | 2023-05-30 | 2023-06-30 | 山西汾河焦煤股份有限公司回坡底煤矿 | Automatic filling equipment for small coal mine goaf |
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