CN117967214B - Drill rod clamping structure for coal mine drilling machine - Google Patents
Drill rod clamping structure for coal mine drilling machine Download PDFInfo
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- CN117967214B CN117967214B CN202410361552.9A CN202410361552A CN117967214B CN 117967214 B CN117967214 B CN 117967214B CN 202410361552 A CN202410361552 A CN 202410361552A CN 117967214 B CN117967214 B CN 117967214B
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- oil
- slip
- drill rod
- inner shell
- cavity
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- 238000005553 drilling Methods 0.000 title claims abstract description 30
- 239000003245 coal Substances 0.000 title claims abstract description 20
- 238000001125 extrusion Methods 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims description 21
- 238000000429 assembly Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 169
- 239000010720 hydraulic oil Substances 0.000 abstract description 23
- 206010066054 Dysmorphism Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention is suitable for the field of coal mine drilling machines, and provides a drill rod clamping structure for a coal mine drilling machine. When the drill rod is clamped, hydraulic oil sequentially enters the first oil cavity and the second oil cavity, hydraulic oil in the second oil cavity pushes the thrust plate to move, the thrust plate drives the slip seat to move through the thrust column, the slip seat extrudes the slip blocks and drives the slip blocks to radially move along the inner shell, the plurality of slip blocks clamp the drill rod, hydraulic oil also enters the third oil cavity, and drives the oil pressing plate to move, the oil pressure plate drives one end of the extrusion column to be abutted against the surface of the drill rod, no matter what the drill rod is in any shape, the extrusion column can be in contact with the drill rod, so that the special-shaped drill rod can be clamped, the installation is firmer, the slipping phenomenon of the special-shaped drill rod is avoided, and the drilling efficiency of the special-shaped drill rod is improved.
Description
Technical Field
The invention belongs to the field of coal mine drilling rigs, and particularly relates to a drill rod clamping structure for a coal mine drilling rig.
Background
The coal mine drilling machine is equipment for drilling coal mining in a coal mine, and is used for drilling holes in a common coal seam by adopting a round drill rod. Along with the requirements of coal mining, the requirements on the drilling of soft coal seams are higher and higher, and special-shaped drill rods such as wide-blade shallow spiral drill rods or triangular drill rods are generally needed. The largest feature of these profiled rods is the non-circular surface shape. When the special-shaped drill rod is used by the drilling machine, a round drill rod is clamped at one end of the common chuck to serve as a driving drill rod, the special-shaped drill rod is clamped at the other end of the common chuck to serve as a driven drill rod, the driving drill rod drives the common chuck to rotate, and torque and push-pull force of the drilling machine are transmitted to the special-shaped drill rod, so that drilling is performed in the mode.
However, the common chuck cannot effectively clamp the special-shaped drill rod, so that relative movement, namely a common slipping phenomenon, is easy to occur between the special-shaped drill rod and the chuck, and the drilling efficiency of the special-shaped drill rod is reduced.
In order to avoid the above technical problems, it is necessary to provide a drill rod clamping structure for a coal mine drilling machine to overcome the drawbacks in the prior art.
Disclosure of Invention
The invention aims to provide a drill rod clamping structure for a coal mine drilling machine, and aims to solve the problem that a slipping phenomenon is easy to occur between a special-shaped drill rod and a common chuck.
The invention discloses a drill rod clamping structure for a coal mine drilling machine, which comprises an outer shell and an inner shell, wherein the inner shell is rotationally connected inside the outer shell, an oil filling port is arranged on the outer side surface of the outer shell and is used for being connected with an external oil pump, hydraulic oil is filled into the outer shell through the oil filling port, a sealed first oil cavity is formed between the outer shell and the inner shell, a second oil cavity is arranged inside the inner shell, a first oil inlet hole for communicating the first oil cavity with the second oil cavity is formed in the side surface of the inner shell, a plurality of T-shaped grooves are formed in the side surface of the inner shell, the T-shaped grooves are uniformly distributed around the axis of the inner shell, slip blocks are inserted into the T-shaped grooves and are radially and slidably connected with each other, slip seats are slidably connected inside the inner shell, the slip seats are in contact with the surfaces of the slip blocks, the side surfaces of the slip blocks and the slip seats are inclined surfaces, the side surfaces, which are far away from the second oil cavity, a first compression spring is connected to the side surface of the slip seats, and one end of the first compression spring is connected to the inner side wall of the inner shell.
The hydraulic clamping mechanism is arranged in the second oil cavity, one end of the hydraulic clamping mechanism penetrating through the second oil cavity is abutted against the side face of the slip seat, when an external oil pump supplies oil, hydraulic oil enters the second oil cavity through the first oil inlet hole and is extruded to move, and the hydraulic clamping mechanism is used for driving the slip seat to move, and the slip seat extrudes and drives the slip blocks to move radially, so that the slip blocks clamp a drill rod;
The special-shaped compensation mechanisms are respectively arranged on the slip blocks, the special-shaped compensation mechanisms comprise compensation assemblies and oil conveying structures, the compensation assemblies are arranged on the slip blocks, one ends of the compensation assemblies penetrate through the slip blocks and face the axle center of the inner shell, the oil conveying structures are arranged on the slip seats, two ends of the oil conveying structures are respectively communicated with the oil cavity II and the compensation assemblies, when an external oil pump supplies oil, hydraulic oil inside the oil cavity II is conveyed into the compensation assemblies through the oil conveying structures and extrudes the compensation assemblies, one ends of the compensation assemblies extend out of the slip blocks, and the compensation assemblies clamp special-shaped drill rods.
According to a further technical scheme, the number of the T-shaped grooves is not less than 4, in the embodiment, 8T-shaped grooves are formed, so that a drill rod with a more complex shape can be clamped, and the clamping is firmer.
Further technical scheme, hydraulic pressure fixture includes sliding connection at the thrust plate in No. two oil pockets, and the thrust plate is the ring, the thrust plate is close to a plurality of thrust posts of side fixedly connected with of slips seat, a plurality of the thrust post runs through the one end of No. two oil pockets and all abuts on slips seat, in order to guarantee that the thrust plate can not prevent hydraulic oil from entering No. two oil pockets from an inlet port, has set up spacing baffle post in the thrust plate side that is close to an inlet port, the distance between the left surface of thrust plate to No. two oil pocket left side walls is greater than the distance between the axle center of an inlet port to No. two oil pocket left side walls.
Further technical scheme, compensation assembly includes a plurality of gripping head, and a plurality of the gripping head is all installed on the slips piece, no. three oil pocket has been seted up to the inside of slips piece, the one end of gripping head stretches into No. three oil pocket inside.
According to the technical scheme, the clamping heads are distributed in two rows on the slip blocks and are distributed at equal intervals along the length direction of the slip blocks, so that friction force between the clamping heads and the drill rod is increased, and the drill rod is prevented from slipping.
Further technical scheme, the gripping head includes the extrusion post of sliding connection on the slip piece, the radial slip of extrusion post along the slip piece, the installation cavity has been seted up to the inside of slip piece, the one end fixedly connected with limiting plate that the extrusion post is located the installation cavity, be connected with No. two compression springs between limiting plate and the installation cavity, the extrusion post stretches to the inside one end fixedly connected with oil clamp plate of No. three oil pocket.
Further technical scheme, defeated oil structure is including seting up the oil duct of the inside intercommunication of oil pocket No. two on the thrust post, the oil duct communicates with defeated oil duct, the oil groove has been seted up to the medial surface of slips seat, oil groove and defeated oil duct intercommunication, no. two inlet ports have been seted up on the slips piece, no. two inlet ports are used for intercommunication oil groove and No. three oil pockets, fixedly connected with and the sealing stick of oil groove looks adaptation on the slips piece, sealing stick and oil groove sliding connection, sealing stick are used for preventing the hydraulic oil leakage in the oil groove.
According to a further technical scheme, an end cover is arranged on the side face of the inner shell, a lug matched with the T-shaped grooves is arranged on the end cover, the lug is clamped into the T-shaped grooves and seals the T-shaped grooves, and slip blocks are prevented from falling out.
According to a further technical scheme, a torsion column is arranged on one side face, away from the end cover, of the inner shell, and is arranged in a pin hole of the main shaft and used for transmitting torque.
Compared with the prior art, the invention has the following beneficial effects:
1. The hydraulic oil in the second oil cavity sequentially passes through the oil duct, the oil delivery channel and the oil groove and enters the third oil cavity, the hydraulic oil in the third oil cavity extrudes the oil pressing plate and drives the oil pressing plate to move, the oil pressing plate drives the extrusion column to move, one end of the extrusion column is abutted against the surface of the drill rod, the extrusion column can be contacted with the drill rod in any shape, so that the special-shaped drill rod can be clamped, the installation is firmer, the slipping phenomenon of the special-shaped drill rod is avoided, and the drilling efficiency of the special-shaped drill rod is improved;
2. When the device is used as a chuck, the inner shell can be connected with the main shaft, or the main shaft is inserted between slip blocks at one end of the inner shell, the special-shaped drill rod is inserted between slip blocks at the other end of the inner shell, under the action of the extrusion column, the slip blocks can clamp and fix the main shaft and the special-shaped drill rod, the main shaft can drive the inner shell to rotate, the inner shell drives the drill rod to rotate through the slip blocks and the extrusion column, and under the condition that the oil supply pressure of an external oil pump is not changed, the hydraulic oil pressure of the first oil cavity is unchanged, so that the extrusion column can continuously extrude the drill rod, and the drill rod is more firmly installed;
3. When dismantling, the outside oil pump stops the oil feed, and the oil pressure in oil pocket, no. two oil pockets and No. three oil pockets is released, and under compression spring's effect, the slips seat is reverse to be removed, and the slips piece is not hard up, under compression spring's effect No. two, in the extrusion post retracted slips piece to can dismantle special-shaped drilling rod fast.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic elevational cross-sectional structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is a schematic cross-sectional view of the structure of C-C in FIG. 2 in accordance with the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4B according to the present invention;
FIG. 6 is a schematic perspective view of slip segments according to the present invention;
FIG. 7 is a schematic perspective view of a thrust plate according to the present invention;
FIG. 8 is a schematic perspective view of a slip bowl according to the present invention;
fig. 9 is a schematic perspective view of an end cap according to the present invention.
In the accompanying drawings: 1. a housing; 2. an inner case; 3. a first oil cavity; 4. a second oil cavity; 5. a first oil inlet hole; 6. a T-shaped groove; 7. slip segments; 8. slip seat; 9. a first compression spring; 10. a hydraulic clamping mechanism; 101. a thrust plate; 102. a thrust column; 103. a limit baffle column; 11. a special-shaped compensation mechanism; 111. a compensation component; 1111. a clamping head; 11111. an extrusion column; 11112. a mounting cavity; 11113. a limiting plate; 11114. a compression spring II; 11115. an oil pressing plate; 1112. a third oil cavity; 112. an oil delivery structure; 1121. an oil delivery passage; 1122. an oil passage; 1123. an oil groove; 1124. a second oil inlet hole; 1125. sealing the deep-fried dough sticks; 12. an end cap; 13. a bump; 14. a torsion column; 15. and an oil filling port.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
As shown in fig. 1-9, the drill rod clamping structure for a coal mine drilling machine provided by the invention comprises an outer shell 1 and an inner shell 2, wherein the inner shell 2 is rotationally connected inside the outer shell 1, an oil filling port 15 is arranged on the outer side surface of the outer shell 1, the oil filling port 15 is used for being connected with an external oil pump, hydraulic oil is filled into the outer shell 1 through the oil filling port 15 by the oil pump, a sealed first oil cavity 3 is formed between the outer shell 1 and the inner shell 2, a second oil cavity 4 is arranged inside the inner shell 2, a first oil inlet hole 5 used for communicating the first oil cavity 3 and the second oil cavity 4 is formed on the side surface of the inner shell 2, a plurality of T type grooves 6 have been seted up to the side of inner shell 2, and is a plurality of T type groove 6 is around the axle center evenly distributed of inner shell 2, slip piece 7 has been inserted to the inside in T type groove 6, slip piece 7 and the radial sliding connection in T type groove 6, the inside sliding connection of inner shell 2 has slips seat 8, slips seat 8 and the surface contact of slips piece 7, just the side that slips seat 7 and slips seat 8 contacted is the inclined plane, the side that slips seat 8 deviates from No. two oil pocket 4 is connected with compression spring 9, the one end of compression spring 9 is connected on the inside wall of inner shell 2, still includes:
The hydraulic clamping mechanism 10 is arranged in the second oil cavity 4, one end of the hydraulic clamping mechanism 10 penetrating through the second oil cavity 4 is abutted against the side face of the slip seat 8, when an external oil pump supplies oil, hydraulic oil enters the second oil cavity 4 through the first oil inlet hole 5, the hydraulic oil extrudes the hydraulic clamping mechanism 10 to move, the hydraulic clamping mechanism 10 is used for driving the slip seat 8 to move, and the slip seat 8 extrudes and drives the slip blocks 7 to radially move, so that the slip blocks 7 clamp a drill rod;
The special-shaped compensation mechanisms 11 are arranged on the slip blocks 7 respectively, the special-shaped compensation mechanisms 11 comprise compensation assemblies 111 and oil conveying structures 112, the compensation assemblies 111 are arranged on the slip blocks 7, one ends of the compensation assemblies 111 penetrate through the slip blocks 7 and face the axis of the inner shell 2, the oil conveying structures 112 are arranged on the slip seats 8, two ends of the oil conveying structures 112 are communicated with the oil cavity No. two 4 and the compensation assemblies 111 respectively, when an external oil pump supplies oil, hydraulic oil in the oil cavity No. two 4 is conveyed into the compensation assemblies 111 through the oil conveying structures 112, and the compensation assemblies 111 are extruded, so that one ends of the compensation assemblies 111 extend out of the slip blocks 7, and the compensation assemblies 111 clamp special-shaped drill rods.
In the embodiment of the present invention, as shown in fig. 3-5, as a preferred embodiment of the present invention, the number of the T-shaped slots 6 is not less than 4, and in this embodiment, the T-shaped slots 6 are provided with 8, which can clamp a drill rod with a more complex shape, and which clamps more firmly.
In the embodiment of the present invention, as shown in fig. 3, as a preferred embodiment of the present invention, the hydraulic clamping mechanism 10 includes a thrust plate 101 slidably connected in the No. two oil chamber 4, where the thrust plate 101 is a ring, a side surface of the thrust plate 101, which is close to the slip seat 8, is fixedly connected with a plurality of thrust posts 102, and one ends of the plurality of thrust posts 102 penetrating through the No. two oil chamber 4 are all abutted to the slip seat 8, in order to ensure that the thrust plate 101 does not prevent hydraulic oil from entering the No. two oil chamber 4 from the No. one oil inlet hole 5, a limit stop post 103 is disposed on a side surface of the thrust plate 101, which is close to the No. one oil inlet hole 5, and when the limit stop post 103 contacts with a side wall of the No. two oil chamber 4, a distance between a left side surface of the thrust plate 101 and the left side wall of the No. two oil chamber 4 is greater than a distance between an axis of the No.1 oil inlet hole 5 and a left side wall of the No. two oil chamber 4.
In the embodiment of the present invention, as shown in fig. 3 and 5, as a preferred embodiment of the present invention, the compensation component 111 includes a plurality of gripping heads 1111, the gripping heads 1111 are all installed on the slip segments 7, the third oil cavity 1112 is formed in the slip segments 7, and one end of the gripping head 1111 extends into the third oil cavity 1112.
In the embodiment of the present invention, as shown in fig. 3-5, as a preferred embodiment of the present invention, the gripping heads 1111 are distributed in two rows on the slip segments 7 and are equally distributed along the length direction of the slip segments 7, so that the friction between the gripping heads 1111 and the drill rod is increased, and the drill rod is prevented from slipping.
In the embodiment of the present invention, as shown in fig. 5, as a preferred embodiment of the present invention, the gripping head 1111 includes a pressing column 11111 slidably connected to the slip segment 7, the pressing column 11111 slides along a radial direction of the slip segment 7, a mounting cavity 11112 is formed in the slip segment 7, one end of the pressing column 11111 located in the mounting cavity 11112 is fixedly connected with a limiting plate 11113, a compression spring 11114 No. two is connected between the limiting plate 11113 and the mounting cavity 11112, and one end of the pressing column 11111 extending into the oil cavity 1112 No. three is fixedly connected with an oil pressure plate 11115.
In the embodiment of the present invention, as shown in fig. 3, as a preferred embodiment of the present invention, the oil delivery structure 112 includes an oil delivery channel 1121 formed inside the slip seat 8, the thrust column 102 is provided with an oil duct 1122 communicated with the inside of the No. two oil chambers 4, the oil duct 1122 is communicated with the oil delivery channel 1121, in order to avoid leakage, a sealing groove is formed on a side surface of the slip seat 8, the thrust column 102 is inserted into the sealing groove, an oil groove 1123 is formed on an inner side surface of the slip seat 8, the oil groove 1123 is communicated with the oil delivery channel 1121, the slip block 7 is provided with a No. two oil inlet holes 1124, the No. two oil inlet holes 1124 are used for communicating the oil groove 1123 and the No. three oil chambers 1112, the slip block 7 is fixedly connected with an oil sealing bar 1125 adapted to the oil groove 1123, the oil sealing bar 1125 is slidably connected with the oil groove 1123, and the oil sealing bar 1125 is used for preventing leakage of hydraulic oil in the oil groove 1123.
In the embodiment of the present invention, as shown in fig. 2 and 8, as a preferred embodiment of the present invention, an end cover 12 is installed on a side surface of the inner shell 2, and a protrusion 13 adapted to a plurality of T-shaped grooves 6 is disposed on the end cover 12, and the protrusion 13 is clamped into the T-shaped groove 6 and seals the T-shaped groove 6, so as to avoid the slip segments 7 from falling out.
In the embodiment of the present invention, as shown in fig. 2-3, as a preferred embodiment of the present invention, when the present device is used as a chuck, the inner housing 2 is connected with the spindle, the outer housing 1 is fixedly connected with the frame, and a torsion post 14 is disposed at a side of the inner housing 2 facing away from the end cap 12, and the torsion post 14 is installed in a pin hole of the spindle, which is used for transmitting torque.
During the use, insert the drilling rod between a plurality of slips pieces 7, and communicate outside oil pump and oiling mouth 15, outside oil pump oil feed, hydraulic oil gets into No. one oil pocket 3, and get into No. two oil pockets 4 through No. one inlet port 5, hydraulic oil in No. two oil pockets 4 promotes thrust plate 101 and removes, thrust plate 101 drives slips seat 8 through thrust column 102 and removes, slips seat 8 extrudes slips piece 7, and drive slips piece 7 along inner shell 2 radial movement, a plurality of slips piece 7 press from both sides the drilling rod, in-process, hydraulic oil in No. two oil pockets 4 also can get into oil groove 1123 through oil duct 1122 and oil delivery passageway 1121, hydraulic oil in oil groove 1123 gets into No. three oil pockets 1112 through No. two inlet port 1124, hydraulic oil in No. three oil pockets 1112 extrudes oil pressure plate 11115, and drives oil pressure plate 11115 and remove the drilling rod, oil pressure plate 11115 drives the extrusion column 11111 and removes, thereby make extrusion column 11111 one end and drilling rod surface butt, extrusion column 11111 all can contact with it, thereby can the centre gripping dysmorphism, and make its dysmorphism installation more firm, the efficiency that the phenomenon of preventing from appearing drills into.
When the device is used as a chuck, the inner shell 2 can be connected with a main shaft, or the main shaft is inserted between slip blocks 7 at one end of the inner shell 2, a special-shaped drill rod is inserted between slip blocks 7 at the other end of the inner shell 2, under the action of an extrusion column 11111, the slip blocks 7 can clamp and fix the main shaft and the special-shaped drill rod, the main shaft can drive the inner shell 2 to rotate, the inner shell 2 drives the drill rod to rotate through the slip blocks 7 and the extrusion column 11111, and the oil cavity 1112 is sequentially communicated with the oil cavity 3 through the oil inlet hole 1124, the oil groove 1123, the oil passage 1122, the oil cavity 4 and the oil inlet hole 5, under the condition that the oil supply pressure is not changed by an external oil pump, the hydraulic oil pressure of the oil cavity 3 is not changed, so that the extrusion column 11111 can continuously extrude the drill rod, and the installation of the drill rod is firmer;
During disassembly, the external oil pump stops supplying oil, the oil pressure in the first oil cavity 3, the second oil cavity 4 and the third oil cavity 1112 is released, the slip seat 8 moves reversely under the action of the first compression spring 9, the slip block 7 is loosened, and the extrusion column 11111 retracts into the slip block 7 under the action of the second compression spring 11114, so that the special-shaped drill rod can be disassembled.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a colliery is drilling rod clamping structure for rig, includes shell and inner shell, its characterized in that, the inner shell rotates to be connected in the inside of shell, form a sealed oil pocket between shell and the inner shell, the inside of inner shell is provided with No. two oil pockets, an inlet port that is used for intercommunication oil pocket and No. two oil pockets is seted up to the side of inner shell, a plurality of T type grooves have been seted up to the side of inner shell, a plurality of T type grooves are around the axle center evenly distributed of inner shell, the inside in T type groove has been inserted the slips piece, slips piece and the radial sliding connection in T type groove, the inside sliding connection of inner shell has the slips seat, the slips seat is with the surface contact of slips piece, just the side that slips piece and slips seat contacted is the inclined plane, the side that slips seat deviates from No. two oil pockets is connected with compression spring, the one end of compression spring is connected on the inside wall of inner shell still includes:
The hydraulic clamping mechanism is arranged in the second oil cavity, and one end of the hydraulic clamping mechanism penetrating through the second oil cavity is abutted against the side face of the slip seat;
The special-shaped compensation mechanisms are respectively arranged on the slip blocks, the special-shaped compensation mechanisms comprise compensation assemblies and oil conveying structures, the compensation assemblies are arranged on the slip blocks, one ends of the compensation assemblies penetrate through the slip blocks and face the axle center of the inner shell, the oil conveying structures are arranged on the slip seats, two ends of the oil conveying structures are respectively communicated with the second oil cavity and the compensation assemblies, and the compensation assemblies are used for clamping a drill rod;
The hydraulic clamping mechanism comprises a thrust plate which is slidably connected in the second oil cavity, a plurality of thrust columns are fixedly connected to the side surface of the thrust plate, which is close to the slip seat, one ends of the thrust columns, which penetrate through the second oil cavity, are all abutted to the slip seat, and a limiting baffle column is arranged on the side surface of the thrust plate, which is close to the first oil inlet;
The compensation assembly comprises a plurality of clamping heads, the clamping heads are arranged on slip blocks, a third oil cavity is formed in each slip block, and one end of each clamping head extends into the third oil cavity;
The clamping head comprises an extrusion column which is connected to the slip blocks in a sliding manner, the extrusion column slides along the radial direction of the slip blocks, an installation cavity is formed in each slip block, one end of the extrusion column, which is positioned in the installation cavity, is fixedly connected with a limiting plate, a second compression spring is connected between the limiting plate and the installation cavity, and one end of the extrusion column, which extends into the third oil cavity, is fixedly connected with an oil pressure plate;
The oil conveying structure comprises an oil conveying channel arranged in a slip seat, an oil channel communicated with the interior of a second oil cavity is arranged on a thrust column, the oil channel is communicated with the oil conveying channel, an oil groove is arranged on the inner side surface of the slip seat, the oil groove is communicated with the oil conveying channel, a second oil inlet hole is arranged on a slip block and used for communicating the oil groove with a third oil cavity, and a sealing strip matched with the oil groove is fixedly connected to the slip block and is in sliding connection with the oil groove.
2. The drill rod clamping structure for a coal mine drilling machine according to claim 1, wherein the number of the T-shaped grooves is not less than 4.
3. The drill rod clamping structure for a coal mine drilling machine according to claim 1, wherein the plurality of clamping heads are distributed in two rows on the slip segments and are distributed at equal intervals along the length direction of the slip segments.
4. The drill rod clamping structure for a coal mine drilling machine according to claim 1, wherein an end cover is mounted on the side face of the inner shell, and a lug matched with the plurality of T-shaped grooves is arranged on the end cover.
5. The drill rod clamping structure for a coal mine drilling machine according to claim 1, wherein a side surface of the inner shell, which faces away from the end cover, is provided with a torsion column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410361552.9A CN117967214B (en) | 2024-03-28 | 2024-03-28 | Drill rod clamping structure for coal mine drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410361552.9A CN117967214B (en) | 2024-03-28 | 2024-03-28 | Drill rod clamping structure for coal mine drilling machine |
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| Publication Number | Publication Date |
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| CN117967214A CN117967214A (en) | 2024-05-03 |
| CN117967214B true CN117967214B (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410361552.9A Active CN117967214B (en) | 2024-03-28 | 2024-03-28 | Drill rod clamping structure for coal mine drilling machine |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518403A (en) * | 2012-01-12 | 2012-06-27 | 重庆大学 | General drill rod clamping device used for coal mine drilling machine |
| CN208718583U (en) * | 2018-08-31 | 2019-04-09 | 顾泽恺 | Drilling rod fixing card |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9812080D0 (en) * | 1998-06-05 | 1998-08-05 | Bsw Ltd | A retaining device |
| CN204402398U (en) * | 2014-12-27 | 2015-06-17 | 长安大学 | A kind of opposite opened hydraulic power slip |
| CN104832080B (en) * | 2015-04-24 | 2017-03-01 | 西安科技大学 | A kind of light-duty all-hydraulic drill of coal mine down-hole drilling |
| CN114458187A (en) * | 2021-12-31 | 2022-05-10 | 连云港黄海勘探技术有限公司 | Full-hydraulic clamping device for tunnel drilling machine |
| CN115229527A (en) * | 2022-09-22 | 2022-10-25 | 高邮市高袁机械制造有限公司 | Clamping structure for machining bearing seat |
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2024
- 2024-03-28 CN CN202410361552.9A patent/CN117967214B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518403A (en) * | 2012-01-12 | 2012-06-27 | 重庆大学 | General drill rod clamping device used for coal mine drilling machine |
| CN208718583U (en) * | 2018-08-31 | 2019-04-09 | 顾泽恺 | Drilling rod fixing card |
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| CN117967214A (en) | 2024-05-03 |
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