CN109611040B - Double-pipe automatic loading and unloading device and coal mine dual-power-head drilling machine - Google Patents
Double-pipe automatic loading and unloading device and coal mine dual-power-head drilling machine Download PDFInfo
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- CN109611040B CN109611040B CN201811424801.5A CN201811424801A CN109611040B CN 109611040 B CN109611040 B CN 109611040B CN 201811424801 A CN201811424801 A CN 201811424801A CN 109611040 B CN109611040 B CN 109611040B
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- 238000005553 drilling Methods 0.000 title claims abstract description 41
- 239000003245 coal Substances 0.000 title claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims description 25
- 230000000670 limiting effect Effects 0.000 claims description 20
- 238000003780 insertion Methods 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 20
- 239000003921 oil Substances 0.000 description 20
- 230000033001 locomotion Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
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- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a double-pipe automatic loading and unloading device and a coal mine dual-power-head drilling machine using the same, wherein the loading and unloading device comprises a loading and unloading support, a main shaft is arranged at the upper end of the loading and unloading support, and a push rod device for pushing a drill rod and a sleeve is arranged at the front end of the loading and unloading support; the main shaft is movably provided with a sleeve clamping arm and a drill rod clamping arm which are used for clamping a sleeve and a drill rod, wherein the sleeve clamping arm and the drill rod clamping arm are connected with each other, and the loading and unloading support is provided with a driving device which is used for driving the drill rod clamping arm and the sleeve clamping arm to rotate. The automatic loading and unloading device can automatically realize the simultaneous loading and unloading of the sleeve and the drill rod, and solves the problems of low efficiency, high labor intensity of workers and potential safety hazard existing in the manual loading, unloading and loading of the drill rod and the sleeve during the drilling of double-pipe double-power heads in the prior art.
Description
Technical Field
The invention relates to the technical field of coal mine drilling machines, in particular to a double-pipe automatic loading and unloading device and a coal mine double-power-head drilling machine.
Background
The traditional coal mine drilling machine generally adopts an operation mode that workers manually load and unload drill rods during drilling operation, so that the efficiency is low, the labor intensity of the workers is high, and certain potential safety hazards exist. For a drilling machine adopting a double-power-head structure, a drill rod and a sleeve pipe must be simultaneously installed during drilling, and the drill rod and the sleeve pipe are simultaneously screwed off or the drill rod or the sleeve pipe is independently screwed off after the hole is drilled. Because the drilling rod and the sleeve pipe are heavy and the two screw threads with different specifications need to be unscrewed, the purely manual loading and unloading is difficult to realize, the auxiliary suspension arm is generally adopted for loading and unloading, and the problems of low efficiency, large potential safety hazard and the like exist in the using process. In recent years, in order to reduce the labor intensity of workers and improve the construction efficiency, automatic rod adding devices or systems aiming at the working of a single-power-head drilling machine appear, but the requirements of simultaneous installing and unscrewing of a sleeve and a drill rod during double-power-head double-pipe drilling cannot be met.
Disclosure of Invention
The invention aims to provide a double-pipe automatic loading and unloading device and a coal mine double-power-head drilling machine using the device, which are used for meeting the requirements of simultaneous loading and unscrewing of a sleeve and a drill rod during drilling operation.
In order to realize the task, the invention adopts the following technical scheme:
a double-pipe automatic loading and unloading device comprises a loading and unloading bracket, wherein the upper end of the loading and unloading bracket is provided with a main shaft, and the front end of the loading and unloading bracket is provided with a push rod device for pushing a drill rod and a sleeve;
the main shaft is movably provided with a sleeve clamping arm and a drill rod clamping arm which are used for clamping a sleeve and a drill rod, wherein the sleeve clamping arm and the drill rod clamping arm are connected with each other, and the loading and unloading support is provided with a driving device which is used for driving the drill rod clamping arm and the sleeve clamping arm to rotate.
Furthermore, the push rod device comprises a push plate frame, the side surface of the push plate frame is provided with an arc-surface-shaped guide surface, one end of the guide surface is provided with a guide groove, and a push rod oil cylinder is arranged above the guide groove through an oil cylinder frame;
and a push plate capable of sliding in the guide groove is assembled in the guide groove and connected with an output shaft of the push rod oil cylinder.
Furthermore, the guide groove is a cross-shaped groove, and guide plates which form a cross structure with the push plate are symmetrically arranged on two sides of the push plate; the upper part of the push plate is processed into three steps with sequentially reduced heights along the direction from the front end to the rear end, wherein a fixed sleeve is arranged on the first step and used for fixing an output shaft of the push rod oil cylinder; the rear end of the third step is processed into an inclined plane.
Furthermore, the drill rod clamping arm and the sleeve clamping arm have the same structure and comprise arm supports, the arm supports are assembled on the main shaft through a rotating sleeve fixed at the top of the arm supports, and a wear-resistant ring is lined between the rotating sleeve and the main shaft; the arm support is provided with a section of clamping cavity bent to the side face to form a C shape, a pair of slips are symmetrically arranged in the clamping cavity, and the slips are driven to move in the opposite direction or the back direction by a pair of clamping oil cylinders assembled in the arm support above and below the clamping cavity respectively.
Furthermore, a sliding groove is formed in the wear-resistant ring, a sliding key is arranged on the main shaft, and the drill rod clamping arm and the sleeve clamping arm can slide along the axial direction of the main shaft through the matching of the sliding key and the sliding groove.
Furthermore, the loading and unloading support comprises a first support and a second support, the tops of the first support and the second support are respectively provided with an ear seat, the spindle sequentially penetrates through the ear seat on the first support, the rotary sleeve on the sleeve clamping arm, the ear seat on the second support and the rotary sleeve on the drill rod clamping arm, a plug is arranged at the rear end of the spindle, the front end of the spindle is provided with the driving device, and a self-lubricating bearing is arranged between the spindle and the ear seats;
the side surfaces of the lug seat of the first support and the lug seat of the second support are respectively provided with a first spring stop dog, the side surfaces of the rotary sleeve on the sleeve clamping arm and the rotary sleeve on the drill rod clamping arm are respectively provided with a second spring stop dog, and a reset spring is respectively arranged between the adjacent first spring stop dog and the second spring stop dog.
Furthermore, a tube blocking device is arranged on the loading and unloading support and comprises a tube blocking plate with an arc-shaped cross section, and a tube blocking edge is arranged at the front end of the tube blocking plate and is of a stepped structure; the side surface of the tube blocking plate is provided with a reinforcing rib and a fixed disc;
the second support on be formed with the mounting groove of C shape, through the bolt hole on the fixed disk will keep off the pipe device and fix the mounting groove in.
Furthermore, the rear end of the loading and unloading support is movably provided with a baffle device, the baffle device comprises a baffle, one end of the baffle is bent, the other end of the baffle is provided with a pair of fixing pipes with square cross sections, and fixing holes are uniformly distributed on different side surfaces of the fixing pipes;
the back of the loading and unloading support is provided with a pair of insertion pipes matched with the fixed pipe, and the insertion pipes are provided with insertion holes.
Furthermore, the back of the loading and unloading support is provided with a limiting device, the limiting device comprises a limiting plate of an L-shaped structure consisting of a side panel and a top plate, the side panel is fixed on the loading and unloading support, and the top plate is provided with a limiting hole and is provided with a limiting bolt and a locking nut.
A coal mine dual-power-head drilling machine comprises a feeding device, wherein one end of the feeding device is sequentially provided with a clamp holder, a first shackle device and a second shackle device, and the other end of the feeding device is sequentially provided with a sleeve power head and a drill rod power head; the side surface of the feeding device is provided with a double-pipe automatic loading and unloading device.
Compared with the prior art, the invention has the following technical characteristics:
1. the automatic loading and unloading device can automatically realize the simultaneous loading and unloading of the sleeve and the drill rod, and solves the problems of low efficiency, high labor intensity of workers and potential safety hazard existing in the manual loading, unloading and loading of the drill rod and the sleeve during the drilling of double-pipe double-power heads in the prior art.
2. The double-power-head drilling machine adopts the automatic loading and unloading device, effectively improves the operation efficiency of the drilling machine, ensures the personal safety of operators, and is favorable for the unmanned propulsion of a drilling site.
Drawings
FIG. 1 is a schematic front view of the automatic double-tube loading and unloading apparatus of the present invention;
FIG. 2 is a schematic view of the back side structure of the automatic double-tube loading and unloading apparatus of the present invention;
FIG. 3 is an axial cross-sectional view of the spindle portion;
FIG. 4 is a schematic structural view of a portion of the pusher assembly;
FIG. 5 is a schematic structural view of a push plate portion;
FIG. 6 is a schematic diagram of the construction of the casing/pipe gripping arm, and the slip engagement section;
FIG. 7 is a schematic structural view of a pipe blocking device;
FIG. 8 is a schematic view of the construction of the baffle device;
FIG. 9 is a schematic structural view of the position limiting device;
FIG. 10 is a schematic view of the flapper assembly in an operative position;
FIG. 11 is a schematic view of the barrier device in a stowed condition;
FIG. 12 is a schematic structural diagram of a coal mine dual power head drilling machine of the present invention.
The reference numbers in the figures illustrate: 1 gripper, 2 first shackler, 3 second shackler, 4 double-tube automatic loading and unloading device, 5 feeding device, 6 casing power head, 7 drill rod power head, 101 driving device, 102 loading and unloading bracket, 103 reset spring, 104 casing clamping arm, 105 first beam, 106 drill rod clamping arm, 107 baffle device, 108 pipe baffle device, 109 second beam, 110 auxiliary supporting plate, 111 push rod device, 112 limiting device, 113 main shaft, 114 transmission shaft, 115 first bracket, 116 second bracket, 117 bolt, 118 self-lubricating bearing, 119 lug seat, 120 thrust bearing, 121 first spring block, 122 sliding key, 123 second spring block, 124 oil cup, 125, 201 guide surface, 202 push plate, 2021 guide plate, 2022 third step, 2023 second step, 2024 first step, 203 guide groove, 204 push rod cylinder, 205 push plate frame, 206 oil cylinder frame, 207 lining plate, 301 wear-resistant ring, 302 flat keys, 303 arm supports, 304 clamping cylinders, 305 slips, 306 rotating sleeves, 401 tube retaining plates, 402 tube retaining edges, 403 reinforcing ribs, 404 fixed plates, 501 fixed tubes, 502 retaining plates, 503 fixed holes, 601 locking nuts, 602 limiting bolts, 603 top plates and 604 side plates.
Detailed Description
As shown in fig. 1 to 12, the invention discloses a double-tube automatic loading and unloading device 4, which comprises a loading and unloading bracket 102, wherein the upper end of the loading and unloading bracket 102 is provided with a main shaft 113, and the front end of the loading and unloading bracket 102 is provided with a push rod device 111 for pushing a drill rod and a sleeve;
the main shaft 113 is movably assembled with a casing clamping arm 104 and a drill rod clamping arm 106 for clamping a casing and a drill rod, wherein the casing clamping arm 104 and the drill rod clamping arm 106 are connected with each other, and the loading and unloading bracket 102 is provided with a driving device 101 for driving the drill rod clamping arm 106 and the casing clamping arm 104 to rotate.
The device is used together with a coal mine double-power-head drilling machine. The loading and unloading bracket 102 is used for mounting and fixing the device, the upper end of the loading and unloading bracket is provided with a main shaft 113 which can drive the drill rod clamping arm 106 and the casing pipe clamping arm 104 to rotate under the action of the driving device 101, and the push rod device 111 arranged at the front end of the loading and unloading bracket 102 is used for pushing the drill rod and the casing pipe to separate so as to facilitate the casing pipe and the drill rod to be clamped by the casing pipe clamping arm 104 and the drill rod clamping arm 106. After the casing pipe and the drill pipe are clamped, the driving device 101 drives the drill pipe clamping arm 106 and the casing pipe clamping arm 104 to drive the drill pipe and the casing pipe to rotate together to the upper part of the feeding device 5 of the drilling machine, so that the drill pipe and the casing pipe are respectively coaxial with a rotating shaft on the casing pipe power head 6 and a rotating shaft on the drill pipe power head 7, and the casing pipe and the drill pipe are installed and detached under the matching of the feeding device 5, the clamp 1, the shackle device, the drill pipe power head 7 and the casing pipe power head 6 on the drilling machine. Each part of the apparatus will be described in detail below.
1. Boring bar clamping arm 106, casing clamping arm 104
In the present invention, the structure of the slip arms 106 and 104 is the same, and the slip arms 104 are described as an example. The sleeve clamping arm 104 comprises an arm support 303, the arm support 303 is assembled on the main shaft 113 through a rotating sleeve 306 fixed at the top of the arm support 303, and a wear-resistant ring 301 is lined between the rotating sleeve 306 and the main shaft 113; specifically, the wear-resistant ring 301 is circumferentially fixed with the rotating sleeve 306 through a flat key 302; a section of clamping cavity which is bent to the side face to form a C shape is arranged on the arm support 303, a pair of slips 305 are symmetrically arranged in the clamping cavity, and the cross section of each slip 305 is of a V-shaped structure; the slips 305 are driven to move in opposite directions or in opposite directions by a pair of gripper cylinders 304 mounted in the arm supports 303 above and below the gripper chamber. As shown in fig. 6, the slips 305 are secured to the output shaft of the gripper cylinder 304.
The arm support 303 of the sleeve clamping arm 104 is provided with a fastening hole for installing and fixing the clamping cylinder 304. As shown in fig. 6, the clamping cylinder 304 is fixed to the fastening hole by a locking bolt. Because the stroke of the clamping cylinder 304 is fixed, the clamping center and the clamping range of the slips 305 can be finely adjusted by adding backing plates of different thicknesses to the bottom of the clamping cylinder 304 and re-fixing the locking bolt.
When the casing is between the pair of slips 305, the slips 305 are driven towards each other by two gripping cylinders 304 so that the slips 305 grip the casing.
Because the strength of the wear-resistant ring 301 relative to the main shaft 113 is lower, the wear is more likely to occur on the surface of the wear-resistant ring 301, and only the wear-resistant ring 301 needs to be replaced when the wear reaches a certain degree; the inner side of the wear-resisting ring 301 is provided with a lubricating groove, lubricating grease is filled into the oil cup 124 at the top end of the clamping arm, and the lubricating grease is retained in the lubricating groove, so that lubrication can be effectively provided, and abrasion is reduced.
2. Pusher device 111
As shown in FIG. 1, the pusher assembly 111 is mounted below the front end of the quick-disconnect carrier 102, forward of the casing gripping arm 104 and the slip gripping arm 106. The push rod device 111 comprises a push plate frame 205 used for mounting and fixing, an arc-surface-shaped guide surface 201 is arranged on the side surface of the push plate frame 205, a guide groove 203 is arranged at one end of the guide surface 201, and a push rod oil cylinder 204 is mounted above the guide groove 203 through an oil cylinder frame 206; a push plate 202 which can slide in the guide groove 203 is arranged in the guide groove 203, and the push plate 202 is connected with an output shaft of the push rod oil cylinder 204.
Specifically, as shown in fig. 1 and 4, the guide groove 203 is a cross-shaped groove, and guide plates 2021 forming a cross-shaped structure with the push plate 202 are symmetrically arranged on both sides of the push plate 202; the guide plate 2021 and the push plate 202 are assembled together in the cross-shaped groove to ensure the stability of the movement of the push plate 202. As shown in fig. 5, the upper portion of the push plate 202 is processed into three steps with sequentially decreasing heights along the direction from the front end to the rear end, wherein a fixing sleeve is arranged on the first step 2024 for fixing the output shaft of the push rod cylinder 204; the rear end of the third step 2022 is machined to be a slope. As shown in fig. 1, under the action of the push rod cylinder 204, the rear end of the push plate 202 can pass through the guide groove 203 to reach the side surface of the guide surface 201 to push the sleeve and the push rod. The upper portion of the push plate 202 is designed to be a stepped structure, so as to ensure that when the casing and the drill rod are sent to a designated position, the drill rod can be exposed out of the casing for a certain length to realize separation of the casing and the drill rod, and a sufficient distance is reserved for the drill rod clamping arm 106 to clamp the drill rod, so that the drill rod and the casing are ensured to be concentric at the moment.
A lining plate 207 is further arranged in the guide groove 203, the lining plate 207 is made of brass and has a C-shaped structure, and two ends of the lining plate 207 are fixed with the push plate frame 205 and the oil cylinder frame 206 through bolts; the backing plate 207 functions to reduce wear of the push plate 202 during repeated movements. The movement clearance between the push plate 202 and the guide groove 203 can also be adjusted by adjusting the thickness of the lining plate 207.
As shown in fig. 1, a C-shaped mounting groove is formed on the loading and unloading bracket 102, the push plate frame 205 is fixed in the mounting groove, and the rear end of the push rod cylinder 204 is fixed on the loading and unloading bracket 102; the front end of the mounting groove is provided with an auxiliary support plate 110 which plays an auxiliary support role when the casing and the drill rod are clamped.
3. Loading and unloading stand 102
The loading and unloading support 102 comprises a first support 115 and a second support 116, as shown in fig. 1 and fig. 2, the tops of the first support 115 and the second support 116 are respectively provided with an ear seat 119, the main shaft 113 sequentially passes through the ear seat 119 on the first support 115, a rotary sleeve 306 on the sleeve clamping arm 104, the ear seat 119 on the second support 116 and the rotary sleeve 306 on the drill rod clamping arm 106, a plug 125 is arranged at the rear end of the main shaft 113, the front end of the main shaft 113 is provided with the driving device 101, and a self-lubricating bearing 118 is arranged between the main shaft 113 and the ear seat 119 and used for providing lubrication and support for the rotation of the main shaft 113. In this embodiment, the driving device 101 employs a swing cylinder.
Sliding grooves are formed in wear-resistant rings 301 in rotating sleeves 306 at the upper ends of the casing clamping arm 104 and the drill rod clamping arm 106, a sliding key 122 is arranged on the main shaft 113, and the drill rod clamping arm 106 and the casing clamping arm 104 can slide along the axial direction of the main shaft 113 through the matching of the sliding key 122 and the sliding grooves; while spindle 113 rotates, spindle 113 transmits torque through feather key 122 to slip arms 106 and casing slip arms 104 to rotate the arms.
The side surfaces of the ear seat 119 of the first bracket 115 and the ear seat 119 of the second bracket 116 are respectively provided with a first spring stop 121, the side surfaces of the rotating sleeve 306 on the sleeve clamping arm 104 and the rotating sleeve 306 on the drill rod clamping arm 106 are respectively provided with a second spring stop 123, and the adjacent first spring stop 121 and the adjacent second spring stop 123 (namely between the first bracket 115 and the sleeve clamping arm 104 and between the second bracket 116 and the drill rod clamping arm 106) are respectively provided with a return spring 103. The return spring 103 provides buffer for the movement of the power head when assembling and disassembling the drilling tool and leaves enough distance for the relative movement between the drilling tool to be disassembled and the power head when disassembling and assembling the casing and the screw thread of the drill rod while matching with the shaft shoulder of the main shaft 113 to determine the initial positions of the drill rod clamping arm 106 and the casing clamping arm 104.
Preferably, as shown in fig. 3, thrust bearings 120 are disposed between the first spring stopper 121 and the ear seat 119 of the first bracket 115, and between the main shaft 113 and the ear seat 119, and the thrust bearings 120 are used for reducing friction between the main shaft 113 and the first spring stopper 121 and the loading and unloading bracket 102 when the main shaft 113 and the first spring stopper 121 rotate; the upper end of each thrust bearing 120 is provided with an oil cup 124 for providing lubrication for the thrust bearing.
When a drilling tool is additionally installed for operation, the feeding device 5 feeds, a drill rod at the front end of the power head is gradually contacted with a drill rod in the drill rod clamping arm 106, at the moment, the feeding device 5 continues to feed for a certain distance, the drill rod clamping arm 106 and the sleeve clamping arm 104 slide along the main shaft 113 under the action of the feeding force, the distance between the first spring stop block 121 and the second spring stop block 123 is reduced, and the return spring 103 is compressed; under the action of the return spring 103, the drill rod to be installed has a movement trend towards the direction of the power head, so that pretightening force and yielding distance are provided for screwing the screw thread.
4. Pipe blocking device 108
The loading and unloading support 102 is provided with a pipe blocking device 108, as shown in fig. 7, the pipe blocking device 108 comprises a pipe blocking plate 401 with a cross section in an arc structure, a pipe blocking edge 402 is arranged at the front end of the pipe blocking plate 401, the pipe blocking edge 402 is in a step structure, and a chamfer is arranged at a step to ensure that a drill rod can pass through smoothly while a sleeve is effectively blocked and cannot pass through; the side surface of the pipe blocking plate 401 is provided with a reinforcing rib 403 and a fixed disc 404;
the second bracket 116 is formed with a C-shaped mounting groove, and the pipe blocking device 108 is fixed in the mounting groove through the bolt hole of the fixing plate 404.
5. Baffle device 107
As shown in fig. 8, the rear end of the loading and unloading bracket 102 is movably equipped with a baffle device 107 for providing a limit for the drill rod during the loading operation of the drilling tool. The baffle device 107 comprises a baffle 502, one end of the baffle 502 is bent, the other end of the baffle 502 is vertically provided with a pair of fixed pipes 501 with square cross sections, and fixed holes 503 are distributed on different side surfaces of the fixed pipes 501;
the back of the detachable bracket 102 is provided with a pair of insertion tubes matched with the fixed tube 501, and the insertion tubes are provided with insertion holes. When the device is used, as shown in fig. 2, the pair of fixing tubes 501 are respectively inserted into the pair of insertion tubes, and then the inserting pins 117 penetrate through the insertion holes and the fixing holes 503 on the fixing tubes 501 to fix the position of the baffle 502, as shown in fig. 10; by adjusting the depth of insertion of the fixed tube 501 into the insertion tube, the distance between the baffle 502 and the rod clamping arm 106 can be adjusted, thereby adjusting the maximum length of the exposed casing of the drill rod.
When the apparatus is not in use, for example, when transportation is required, the flap device 107 is retracted. The fixed tubes 501 are firstly pulled out of the insertion tubes, one fixed tube 501 is inserted into one insertion tube after rotating for 90 degrees, and the fixed tube is fixed by the bolt 117, so that the width of the device can be reduced, and the device is convenient to transport, as shown in fig. 11.
6. Limiting device 112
The back of the loading and unloading bracket 102 is provided with a limiting device 112, as shown in fig. 9, the limiting device 112 includes a limiting plate of an L-shaped structure composed of a side panel 604 and a top plate 603, the side panel 604 is fixed on the loading and unloading bracket 102, the top plate 603 is provided with a limiting hole and is provided with a limiting bolt 602 and a locking nut 601; wherein the limit bolt 602 passes through the limit hole from the bottom to the top, and the lock nut 601 is screwed onto the limit bolt from the top.
In this embodiment, the casing clamping arm 104 and the drill rod clamping arm 106 are connected by a first cross beam 105 located at the upper part of the arm support 303 and a second cross beam 109 located at the lower part of the arm support 303, and when the main shaft 113 drives the casing clamping arm 104 and the drill rod clamping arm 106 to synchronously rotate to the back side of the loading and unloading support 102 until the first cross beam 105 is in bolt contact with the limit screw 602, the rotation cannot be continued, so that the limiting effect is achieved. By adjusting the length of the limit bolt 602 extending out of the top plate 603 and matching with the locking bolts on the sleeve clamping arm 104 and the drill rod clamping arm 106 for fixing the clamping cylinder 304, the positions of the sleeve and the drill rod sent to the front end of the power head can be adjusted, and the sleeve and the drill rod are ensured to be concentric with the rotation center of the power head when the sleeve and the drill rod are assembled and disassembled.
The invention further provides a coal mine dual-power-head drilling machine, which comprises a feeding device 5, wherein one end of the feeding device 5 is sequentially provided with a clamp holder 1, a first shackle device 2 and a second shackle device 3, and the other end is sequentially provided with a casing power head 6 and a drill rod power head 7; the side surface of the feeding device 5 is provided with a double-tube automatic loading and unloading device 4.
The working principle of the invention is as follows:
the device is driven by hydraulic oil of a hydraulic oil circuit of the coal mine drilling machine, and can meet the requirements of different construction processes in the double-pipe double-power-head drilling construction process by matching with other parts on the main machine.
In the double-pipe drilling construction process, when a sleeve and a drill rod need to be additionally installed at the same time, in a complete technological process, the motion conditions of each execution part are as follows:
firstly, a sleeve and a drill rod are placed in a push rod device 111 and a pipe blocking device 108, and the direction of screw threads is consistent, namely the screw threads face to one side of the push rod device 111, an output shaft of a push rod oil cylinder 204 in the push rod device 111 is slowly withdrawn from an initial extending state under the action of hydraulic oil, and a push plate 202 is driven to move rightwards along a guide groove 203 between an oil cylinder frame 206 and a push plate frame 205; the rear end of the third step 2022 on the push plate 202 contacts with the drill rod first, then the inclined surface part of the rear end of the third step is inserted into the through hole of the drill rod, and meanwhile, the drill rod is pushed out towards the right side, when the drill rod is pushed out of the casing by a specified length, the second step 2023 on the push plate 202 starts to contact with the casing and pushes the casing out towards the right side until the casing is blocked by the pipe blocking device 108 and cannot move towards the right any more; at the moment, the clamping cylinders 304 on the casing clamping arm 104 and the drill rod clamping arm 106 are pushed out under the action of hydraulic oil to drive the slips 305 to clamp the casing and the drill rod respectively; then, the output shaft of the push rod cylinder 204 in the push rod device 111 is retracted to the initial position; then, oil is supplied to the driving device 101, the driving device 101 drives the transmission shaft 114 to rotate, and power is transmitted to the main shaft 113 through the flat key 302 between the transmission shaft 114 and the main shaft 113; the main shaft 113 transmits the torque to the casing pipe clamping arm 104 and the drill pipe clamping arm 106 through the sliding key 122, drives the casing pipe and the drill pipe to rotate around the main shaft 113 to the front ends of the casing pipe power head 6 and the drill pipe power head 7, and completes one-time automatic casing pipe and casing pipe installing process by matching with the clamp 1, the first shackle device 2, the second shackle device 3, the casing pipe power head 6 and the drill pipe power head 7.
The process flow of the device of the invention under different working conditions is described in the following cases.
The first method comprises the following steps: process for simultaneously installing sleeve and drill rod
The drilling machine is in a normal operation state, when the casing pipe power head 6 and the drill rod power head 7 both run to the foremost end of the feeding device 5, and a drilling tool needs to be additionally installed, the technological process of additionally installing the casing pipe and the drill rod is as follows:
step 1, a clamp 1 clamps a front end sleeve of a driving sleeve; reversely rotating the sleeve power head 6 to remove the sleeve fastener;
step 8, opening the slips 305 of the casing clamping arm 104, opening the second shackle device 3, rotating the casing power head 6 forward and continuously feeding slowly, screwing the casing screw thread in the clamp holder 1, opening the clamp holder 1, stopping the rotation and feeding of the casing power head 6, and completing one casing and drill rod installing operation.
And the second method comprises the following steps: process for simultaneously disassembling casing and drill rod
When the power head runs to the foremost end of the machine body, the drilling operation of the last drill rod and the casing pipe is completed, and the drilling tool in the hole needs to be lifted, the technological process of screwing and unscrewing the casing pipe and the drill rod is as follows:
step 1, adjusting the positions of a sleeve power head 6 and a drill rod power head 7 on a feeding device 5, so that a screw thread joint at the front end (close to a hole port end) of a sleeve to be disassembled is positioned between a clamp holder 1 and a first disassembling device 2, and the sleeve power head 6 is farthest away from the drill rod power head 7;
step 8, swinging out two clamping arms of the double-pipe automatic loading and unloading device 4 to the front end of the power head, clamping a to-be-unloaded sleeve by the sleeve clamping arm 104, and clamping a to-be-unloaded drill pipe by the drill pipe clamping arm 106; the drill rod power heads 7 reversely rotate and slowly pull out the screw threads of the drill rod to be unloaded, and the two power heads are pulled out to the rearmost end of the feeding device 5;
and 9, swinging the two clamping arms of the double-pipe automatic installing and unscrewing device back to the initial positions, conveying the drill pipe and the casing pipe to the side surface of the machine body, and completing one simultaneous screwing and unscrewing operation of the casing pipe and the drill pipe.
And the third is that: process for independently installing drill rod
When the drilling machine is in a normal operation state, the drilling of the casing pipe is difficult, and a drill rod needs to be independently and additionally arranged to continue drilling. If the sleeve at the front end of the driving sleeve does not complete all feeding strokes, one sleeve and one drill rod need to be dismounted at the same time, the drill rods are independently mounted, and the specific dismounting process flow is the same as the second situation. The process flow of independently additionally installing the drill rod is as follows:
step 1, a clamp holder 1 keeps clamping an inner sleeve pipe in a hole, and a first shackle device 2 clamps a drill rod in the hole;
and 7, loosening the drill rod to be installed by the first shackler 2, and completing the process of independently installing the drill rod once.
Fourth, a process of disassembling the drill rod alone
When the drilling machine carries out the drill lifting operation and needs to unscrew the drill rod independently, the process flow of the independent unscrewing of the drill rod is as follows:
step 1, adjusting the positions of a sleeve power head 6 and a drill rod power head 7 on a feeding device 5 to enable a screw joint seam at the front end of a driving sleeve to be positioned between a clamp holder 1 and a first shackle device 2, wherein the sleeve power head 6 is closest to the drill rod power head 7;
and 8, swinging the double-pipe automatic loading and unloading device 4 back to the initial position, and stopping the drill rod power head 7 to finish the process of independently unloading the drill rod once.
Claims (10)
1. The double-pipe automatic loading and unloading device is characterized by comprising a loading and unloading support (102), wherein the upper end of the loading and unloading support (102) is provided with a main shaft (113), and the front end of the loading and unloading support (102) is provided with a push rod device (111) for pushing a drill rod and a sleeve;
the drill pipe clamping device is characterized in that a sleeve clamping arm (104) and a drill rod clamping arm (106) which are used for clamping a sleeve and a drill rod are movably assembled on the main shaft (113), wherein the sleeve clamping arm (104) and the drill rod clamping arm (106) are connected with each other, and a driving device (101) for driving the drill rod clamping arm (106) and the sleeve clamping arm (104) to rotate is installed on the loading and unloading support (102).
2. The double-tube automatic loading and unloading device of claim 1, wherein the push rod device (111) comprises a push plate frame (205), an arc-shaped guide surface (201) is arranged on the side surface of the push plate frame (205), a guide groove (203) is arranged at one end of the guide surface (201), and a push rod oil cylinder (204) is arranged above the guide groove (203) through an oil cylinder frame (206);
the guide groove (203) is provided with a push plate (202) which can slide in the guide groove (203), and the push plate (202) is connected with an output shaft of the push rod oil cylinder (204).
3. The double-tube automatic loading and unloading device according to claim 2, wherein the guide groove (203) is a cross-shaped groove, and guide plates (2021) forming a cross-shaped structure with the push plate (202) are symmetrically arranged on both sides of the push plate (202); the upper part of the push plate (202) is processed into three steps with sequentially reduced heights along the direction from the front end to the rear end, wherein a fixed sleeve is arranged on the first step (2024) and is used for fixing the output shaft of the push rod oil cylinder (204); the rear end of the third step (2022) is processed into an inclined surface.
4. The double-tube automatic loading and unloading device of claim 1, wherein the structure of the drill rod clamping arm (106) and the casing clamping arm (104) is the same, the device comprises an arm support (303), the arm support (303) is assembled on the main shaft (113) through a rotating sleeve (306) fixed at the top of the arm support, and a wear-resistant ring (301) is lined between the rotating sleeve (306) and the main shaft (113); the cantilever crane (303) is provided with a section of clamping cavity which is bent to the side face to form a C shape, a pair of slips (305) are symmetrically arranged in the clamping cavity, and the pair of slips (305) are driven by a pair of clamping oil cylinders (304) which are assembled in the cantilever crane (303) above and below the clamping cavity to move in the opposite direction or the back direction respectively.
5. The double-tube automatic loading and unloading device of claim 4, wherein the wear-resistant ring (301) is provided with a sliding groove, the main shaft (113) is provided with a sliding key (122), and the drill rod clamping arm (106) and the sleeve clamping arm (104) can slide along the axial direction of the main shaft (113) through the matching of the sliding key (122) and the sliding groove.
6. The double-tube automatic loading and unloading device of claim 1, wherein the loading and unloading bracket (102) comprises a first bracket (115) and a second bracket (116), the tops of the first bracket (115) and the second bracket (116) are respectively provided with an ear seat (119), the main shaft (113) sequentially passes through the ear seat (119) on the first bracket (115), the rotary sleeve (306) on the sleeve clamping arm (104), the ear seat (119) on the second bracket (116) and the rotary sleeve (306) on the drill rod clamping arm (106), the rear end part of the main shaft (113) is provided with a choke plug (125), the front end of the main shaft (113) is provided with the driving device (101), and a self-lubricating bearing (118) is arranged between the main shaft (113) and the ear seat (119);
the side surfaces of the lug seat (119) of the first support (115) and the lug seat (119) of the second support (116) are respectively provided with a first spring stop block (121), the side surfaces of the rotating sleeve (306) on the sleeve clamping arm (104) and the rotating sleeve (306) on the drill rod clamping arm (106) are respectively provided with a second spring stop block (123), and a return spring (103) is respectively arranged between the adjacent first spring stop block (121) and the second spring stop block (123).
7. The double-tube automatic loading and unloading device of claim 6, wherein the loading and unloading bracket (102) is provided with a tube blocking device (108), the tube blocking device (108) comprises a tube blocking plate (401) with an arc-shaped cross section, the front end of the tube blocking plate (401) is provided with a tube blocking edge (402), and the tube blocking edge (402) is of a stepped structure; the side surface of the tube blocking plate (401) is provided with a reinforcing rib (403) and a fixed plate (404);
and a C-shaped mounting groove is formed on the second bracket (116), and the pipe blocking device (108) is fixed in the mounting groove through a bolt hole on the fixed disc (404).
8. The double-tube automatic loading and unloading device of claim 1, wherein the rear end of the loading and unloading bracket (102) is movably provided with a baffle device (107), the baffle device (107) comprises a baffle (502), one end of the baffle (502) is bent, the other end is provided with a pair of fixed tubes (501) with square cross sections, and different sides of the fixed tubes (501) are uniformly distributed with fixed holes (503);
the back of the loading and unloading support (102) is provided with a pair of insertion tubes matched with the fixed tube (501), and the insertion tubes are provided with insertion holes.
9. The double-tube automatic loading and unloading device of claim 1, wherein a limiting device (112) is arranged on the back of the loading and unloading bracket (102), the limiting device (112) comprises an L-shaped limiting plate consisting of a side plate (604) and a top plate (603), the side plate (604) is fixed on the loading and unloading bracket (102), and the top plate (603) is provided with a limiting hole and is provided with a limiting bolt (602) and a locking nut (601).
10. A coal mine dual-power-head drilling machine comprises a feeding device (5), wherein one end of the feeding device (5) is sequentially provided with a clamp holder (1), a first shackle device (2) and a second shackle device (3), and the other end of the feeding device is sequentially provided with a sleeve power head (6) and a drill rod power head (7); the double-tube automatic loading and unloading device (4) as claimed in any one of claims 1 to 9 is installed on the side surface of the feeding device (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424801.5A CN109611040B (en) | 2018-11-27 | 2018-11-27 | Double-pipe automatic loading and unloading device and coal mine dual-power-head drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424801.5A CN109611040B (en) | 2018-11-27 | 2018-11-27 | Double-pipe automatic loading and unloading device and coal mine dual-power-head drilling machine |
Publications (2)
| Publication Number | Publication Date |
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| CN109611040A CN109611040A (en) | 2019-04-12 |
| CN109611040B true CN109611040B (en) | 2020-09-04 |
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| CN201811424801.5A Active CN109611040B (en) | 2018-11-27 | 2018-11-27 | Double-pipe automatic loading and unloading device and coal mine dual-power-head drilling machine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112610169A (en) * | 2020-12-02 | 2021-04-06 | 中煤科工集团西安研究院有限公司 | Three-clamping shackle unit for double-pipe drilling, drilling machine device and method |
| CN112676870B (en) * | 2020-12-16 | 2021-11-30 | 中煤科工集团西安研究院有限公司 | Drill rod buckling device for machining drill rod spiral groove, drill rod loading and unloading system and method |
| CN112878937B (en) * | 2021-04-12 | 2024-01-26 | 河南理工大学 | Mining drill rod detacher and working method |
| CN113719246B (en) * | 2021-08-27 | 2024-04-16 | 中煤科工集团西安研究院有限公司 | Quick rod feeding device of drilling machine, drill rod feeding system and control method |
| CN114412359A (en) * | 2022-01-25 | 2022-04-29 | 陕西太合智能钻探有限公司 | Dual-rod directional drilling system |
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| CN109611040A (en) | 2019-04-12 |
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