CN111005719A - Hydraulic rock drill - Google Patents
Hydraulic rock drill Download PDFInfo
- Publication number
- CN111005719A CN111005719A CN201911358847.6A CN201911358847A CN111005719A CN 111005719 A CN111005719 A CN 111005719A CN 201911358847 A CN201911358847 A CN 201911358847A CN 111005719 A CN111005719 A CN 111005719A
- Authority
- CN
- China
- Prior art keywords
- drill
- hole
- piece
- shank
- hydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011435 rock Substances 0.000 title claims abstract description 46
- 230000000903 blocking effect Effects 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 21
- 238000005553 drilling Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a hydraulic rock drill, which comprises a main body, a control valve component, a piston piece, a drill shank, a drill rod and a blocking component, wherein the main body is provided with a hydraulic cavity, the control valve component is communicated to the hydraulic cavity, the piston piece is positioned in the hydraulic cavity, the piston piece is provided with a first through hole, the drill shank is provided with a second through hole, a flow passage through hole is formed in the middle of the drill rod, the flow passage through hole penetrates through the drill rod along the extension direction of the drill rod, and the first through hole, the second through hole and the flow passage through hole; a first step surface surrounding the flow passage through hole is formed on the inner periphery of the drill rod, and the first step surface faces back to the drill rod shank; the blocking assembly comprises a support, a tension spring and a blocking piece; the supporting piece and the blocking piece are respectively connected to two ends of the tension spring, the supporting piece is fixed on the inner circumferential surface of the flow passage through hole, the supporting piece is closer to the drill shank than the blocking piece, and the blocking piece is abutted to the first step surface and blocks the flow passage through hole in a sealing mode. The blocking piece effectively prevents water flow from entering the hydraulic system, protects the hydraulic system and prolongs the service life of the hydraulic rock drill.
Description
Technical Field
The invention relates to the technical field of rock drills, in particular to a hydraulic rock drill.
Background
Rock drills are tools for direct quarrying of rock, which drill blastholes into rock formations for the introduction of explosives for blasting the rock to complete quarrying of rock or other stone works, and in addition, rock drills may be modified as breakers for breaking hard layers such as concrete.
The existing hydraulic rock drill comprises a main body, a control valve assembly, a piston piece, a drill rod tail and a drill rod, wherein the main body, the drill rod tail and the drill rod are sequentially connected, a hydraulic cavity is arranged in the main body, the control valve assembly is communicated to the hydraulic cavity, the piston piece is located in the hydraulic cavity, the piston piece can be abutted to the drill rod tail, a flow passage through hole is formed in the middle of the drill rod, the flow passage through hole penetrates through the drill rod along the extending direction of the drill rod, and the hydraulic cavity is communicated to the flow passage through hole through the.
The existing hydraulic rock drill has the problems that a first through hole of a piston piece, a second through hole of a drill shank and a flow passage through hole of a drill rod are sequentially communicated to ensure the balance of air pressure and water pressure in a system, but water flows into a hydraulic system through the drill shank, so that hydraulic oil is emulsified, the equipment maintenance cost is high, and the service life is short.
Disclosure of Invention
The invention aims to provide a hydraulic rock drill with a waterproof effect and a hydraulic system protected.
The invention provides a hydraulic rock drill which comprises a main body, a control valve component, a piston component, a drill bit shank and a drill bit, wherein the main body, the drill bit shank and the drill bit are sequentially connected, a hydraulic cavity is arranged in the main body, the control valve component is communicated with the hydraulic cavity, the piston component is positioned in the hydraulic cavity, the piston component can be abutted against the drill bit shank, the piston component is provided with a first through hole, the drill bit shank is provided with a second through hole, the middle part of the drill bit is provided with a flow passage through hole, the flow passage through hole penetrates through the drill bit along the extending direction of the drill bit, and the first through hole; a first step surface surrounding the flow passage through hole is formed on the inner periphery of the drill rod, and the first step surface faces back to the drill rod shank; the hydraulic rock drill further comprises a blocking assembly, wherein the blocking assembly comprises a supporting piece, a tension spring and a blocking piece; the supporting piece and the blocking piece are respectively connected to two ends of the tension spring, the blocking assembly is located in the flow channel, the supporting piece is fixed on the inner circumferential surface of the flow channel through hole, the supporting piece is closer to the drill shank than the blocking piece, and the blocking piece abuts against the first step surface and blocks the flow channel through hole in a sealing mode.
According to the scheme, under the action of the pulling force of the tension spring, the blocking piece abuts against the first step surface and seals and blocks the flow passage through hole from the direction towards the drill shank, and under the pushing of a certain air flow, the blocking piece can leave the first step surface and form an air flow gap, so that the pressure relief effect is realized; when water is injected into the drill rod to wash the rock, the blocking piece effectively prevents water from entering the drill rod tail to reach the hydraulic system, prevents the emulsification of hydraulic oil, protects the hydraulic system and prolongs the service life of the hydraulic rock drill.
The inner circumference of the drill rod forms a second step surface surrounding the flow passage through hole, the second step surface faces the drill rod shank, and the first step surface is closer to the drill rod shank than the second step surface; the stopper is movable to an extreme position, which is a position at which the stopper abuts against the second step surface.
Therefore, the second step surface can limit the formation of the blocking piece and prevent the blocking piece from loosening and being damaged under strong airflow.
In a further scheme, the flow passage through hole forms a water storage cavity between the first step surface and the second step surface.
According to a further scheme, the hydraulic rock drill further comprises a first water supply device, the first water supply device comprises a first air compressor and a first water pipe, the first air compressor is fixed outside the drill rod, and the first water pipe is communicated with the water storage cavity.
Therefore, the water storage cavity has certain buffering effect and water storage effect on water flow entering the drill rod, and the water storage cavity has a flow stabilizing effect.
The drill rod is further provided with a water outlet which is communicated with the water storage cavity; the hydraulic rock drill further comprises a sealing cover, and the sealing cover is detachably covered at the water outlet on the drill rod.
Therefore, the sealing cover and the water outlet are arranged, so that accumulated water in the drill rod can be conveniently drained.
Further, a gap is formed between the supporting piece and the inner peripheral wall of the drill rod, and the gap is communicated with the flow passage through hole.
As can be seen, this arrangement prevents the support member from affecting the flow-through of the flow passage.
The hydraulic rock drill further comprises a spraying device, wherein the spraying device comprises a second water pipe, an atomizer, a third water pipe and a spraying lantern ring which are sequentially communicated, and a plurality of atomizing nozzles are arranged on the spraying lantern ring; the atomizer is fixed outside the main body, the spraying lantern ring is fixed between the main body and the drill shank, and the atomizing nozzle faces the drill shank.
From top to bottom, spray set can spray the dust, protects constructor.
The hydraulic rock drill further comprises a dust blocking disc, the dust blocking disc is made of light-transmitting materials and is fixed between the main body and the spraying lantern ring, and an outward extending dust blocking part of the dust blocking disc extends out of the periphery of the spraying lantern ring.
From top to bottom, keep off the dirt dish and carry out physics to the dust and block, further protect constructor.
The further proposal is that the overhanging dust-blocking part is bent back to the main body.
Therefore, the dust diffusion path can be further limited by the arrangement, and the dust prevention effect is better.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the hydraulic rock drill according to the invention.
Fig. 2 is a partial schematic view of an embodiment of the hydraulic rock drill according to the invention.
Fig. 3 is a schematic structural view of a dust blocking disc and a spray collar of the hydraulic rock drill according to the embodiment of the invention.
Detailed Description
Referring to fig. 1 and 2, fig. 1 is a schematic structural view of an embodiment of the hydraulic rock drilling machine of the present invention, and fig. 2 is a partial schematic view of the embodiment of the hydraulic rock drilling machine of the present invention. The invention provides a hydraulic rock drill which comprises a main body 11, a control valve assembly 13, a piston assembly 12, a drill bit tail assembly 2, a drill bit 3, a spraying device 4, a dust blocking disc 5, a first water supply device 6 and a blocking assembly 7. The drill bit assembly comprises a main body 11, a drill bit shank assembly 2 and a drill bit 3 which are sequentially connected, a hydraulic cavity (not shown in the figure) is arranged in the main body 11, a control valve assembly 13 is communicated to the hydraulic cavity, a piston assembly 12 is located in the hydraulic cavity, the piston assembly 12 is provided with a piston piece 121, a drill bit shank 21 is arranged in the middle of the drill bit shank assembly 2, the piston piece 121 can abut against the drill bit shank 21, the piston piece 121 is provided with a first through hole 120, a second through hole 210 penetrating through the drill bit shank 21 is formed in the middle of the drill bit 3, a flow passage through hole 30 is formed in the middle of the drill bit 3, the flow passage through hole 30 penetrates through the drill bit 3 along the extending direction of the. A control valve assembly 13 is fixed outside the body 11, and the control valve assembly 13 is used for regulating the hydraulic state of the hydraulic chamber so as to enable the piston member 121 to perform high-frequency reciprocating motion and impact the shank adapter 21.
Referring to fig. 3, fig. 3 is a schematic structural view of a dust blocking plate and a spraying collar of a hydraulic rock drill according to an embodiment of the present invention. The spraying device 4 comprises a second water pipe 41, an atomizer 42, a third water pipe 43 and a spraying lantern ring 44 which are sequentially communicated, and a plurality of atomizing nozzles 441 are arranged on the spraying lantern ring 44; the atomizer 42 is fixed outside the main body 11, the shower collar 44 is fixed between the main body 11 and the shank adapter 21, a plurality of atomizing nozzles 441 are arranged on the outer periphery of the front portion 3, and the atomizing nozzles 441 face the shank 3. The dust blocking plate 5 is made of a light-transmitting material, the dust blocking plate 5 is fixed between the main body 11 and the spraying lantern ring 44, and the outward dust blocking part 51 of the dust blocking plate 5 extends out of the periphery of the spraying lantern ring 44. The overhanging dust guard 51 is bent away from the body 11.
Referring to fig. 1 and 2, a water storage cavity 301 with an increased flow cross section is arranged at a position close to a drill shank of a flow passage through hole 30, the inner periphery of a drill bit 3 forms a first step surface 311 and a second step surface 312 which are oppositely arranged in the extending direction of the flow passage through hole 30 at the position of the water storage cavity 301, the water storage cavity 301 is positioned between the first step surface 311 and the second step surface 312, the first step surface 311 faces away from the drill shank 21, the second step surface 312 faces towards the drill shank 21, and the first step surface 311 is closer to the drill shank 21 than the second step surface 312.
The blocking assembly 7 comprises a supporting piece 71, a tension spring 72 and a blocking piece 73, the blocking piece 73 is a blocking plate, the supporting piece 71 and the blocking piece 73 are respectively connected to two ends of the tension spring 72, the blocking assembly 7 is positioned in the flow channel, the supporting piece 71 is fixed on the inner circumferential surface of the flow channel through hole 30, a gap is formed between the supporting piece 71 and the inner circumferential wall of the drill rod 3, and the gap is communicated with the flow channel through hole 30; the support 71 is closer to the shank 21 than the stopper 73, and the stopper 73 abuts on the first step face 311 and seals the passage through hole 30. The stopper 73 is movable to an extreme position, which is a position where the stopper 73 abuts the second step surface 312.
On the drill rod 3, a water inlet pipe wall 321 and a water outlet pipe wall 322 which are oppositely arranged and extend perpendicularly to the extending direction of the drill rod 3 are arranged at the position of the water storage cavity 301, the water inlet of the water inlet pipe wall 321 is blocked by a blocking cover 331, a water outlet 302 communicated with the outside is formed in the middle of the water outlet pipe wall 322, and a sealing cover 332 is detachably covered at the position of the water outlet 302 on the drill rod 3. The first water supply device 6 comprises a first air compressor 61 and a first water pipe 62, wherein the first air compressor 61 is fixed outside the drill rod 3, and the first water pipe 62 is connected to the water storage cavity 301 through a blocking cover 331.
Under the action of the pulling force of the tension spring 72, the blocking piece 73 abuts against the first step surface 311, the flow passage through hole 30 is blocked in a sealing manner from the direction towards the drill shank 21, and under the pushing of a certain air flow, the blocking piece 73 can leave the first step surface 311 and form an air flow gap, so that the pressure relief effect is realized; when water is injected into the drill rod 3 to wash the rock, the blocking piece 73 effectively prevents water from entering the drill rod shank 21 and further reaching the hydraulic system, prevents emulsification of hydraulic oil, protects the hydraulic system, and prolongs the service life of the hydraulic rock drill.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.
Claims (9)
1. The hydraulic rock drill comprises a main body, a control valve assembly, a piston piece, a drill bit shank and a drill bit, wherein the main body, the drill bit shank and the drill bit are sequentially connected, a hydraulic cavity is arranged in the main body, the control valve assembly is communicated with the hydraulic cavity, the piston piece is positioned in the hydraulic cavity, the piston piece can be abutted against the drill bit shank, the piston piece is provided with a first through hole, the drill bit shank is provided with a second through hole, a flow passage through hole is formed in the middle of the drill bit, the flow passage through hole penetrates through the drill bit along the extending direction of the drill bit, and the first through hole, the second through hole and the flow passage through hole are sequentially communicated;
the method is characterized in that:
a first step surface surrounding the flow passage through hole is formed on the inner periphery of the drill rod, and the first step surface faces away from the drill rod shank;
the hydraulic rock drill further comprises a blocking assembly comprising a support, a tension spring and a blocking member;
the supporting piece and the blocking piece are respectively connected to two ends of the tension spring, the blocking assembly is located in the flow channel, the supporting piece is fixed on the inner circumferential surface of the through hole of the flow channel, the supporting piece is closer to the shank adapter than the blocking piece, and the blocking piece abuts against the first step surface and blocks the through hole of the flow channel in a sealing mode.
2. Hydraulic rock drilling machine according to claim 1, characterized in that:
the inner periphery of the drill rod forms a second step surface surrounding the flow passage through hole, the second step surface faces the drill rod shank, and the first step surface is closer to the drill rod shank than the second step surface;
the blocking piece can move to a limit position, and the limit position is a position where the blocking piece is abutted against the second step surface.
3. A hydraulic rock drill according to claim 2 wherein:
the runner through hole forms a water storage cavity between the first step surface and the second step surface.
4. A hydraulic rock drill according to claim 3 wherein:
the hydraulic rock drill further comprises a first water supply device, the first water supply device comprises a first air compressor and a first water pipe, the first air compressor is fixed outside the drill rod, and the first water pipe is communicated to the water storage cavity.
5. A hydraulic rock drill according to claim 3 wherein:
the drill rod is also provided with a water outlet which is communicated to the water storage cavity;
the hydraulic rock drill further comprises a sealing cover, and the sealing cover is detachably covered at the water drainage port on the drill rod.
6. A hydraulic rock drill according to any one of claims 1 to 5 wherein:
and a gap is formed between the supporting piece and the inner peripheral wall of the drill rod and is communicated with the flow passage through hole.
7. A hydraulic rock drill according to any one of claims 1 to 5 wherein:
the hydraulic rock drill further comprises a spraying device, the spraying device comprises a second water pipe, an atomizer, a third water pipe and a spraying lantern ring which are sequentially communicated, and a plurality of atomizing spray heads are arranged on the spraying lantern ring;
the atomizer is fixed outside the main body, the spraying lantern ring is fixed between the main body and the drill shank, and the atomizing nozzle faces the drill shank.
8. Hydraulic rock drilling machine according to claim 7, characterized in that:
the hydraulic rock drill further comprises a dust blocking disc, the dust blocking disc is made of light-transmitting materials and fixed between the main body and the spraying lantern ring, and an outward extending dust blocking portion of the dust blocking disc extends out of the periphery of the spraying lantern ring.
9. A hydraulic rock drill according to claim 8 wherein:
the outward extending dust blocking part is bent back to the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358847.6A CN111005719A (en) | 2019-12-25 | 2019-12-25 | Hydraulic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358847.6A CN111005719A (en) | 2019-12-25 | 2019-12-25 | Hydraulic rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111005719A true CN111005719A (en) | 2020-04-14 |
Family
ID=70118646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911358847.6A Pending CN111005719A (en) | 2019-12-25 | 2019-12-25 | Hydraulic rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111005719A (en) |
-
2019
- 2019-12-25 CN CN201911358847.6A patent/CN111005719A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210531 Address after: 510000 room 707, No.2, Huafei street, Huangge Town, Nansha District, Guangzhou City, Guangdong Province (office only) Applicant after: Guangzhou Engineering Co., Ltd. of China Railway 19th Bureau Group Address before: China railway building, 111 Gangchang Road, Xiawan, Gongbei, Zhuhai, Guangdong 519000 Applicant before: NO.7 ENGINEERING CO., LTD. OF CHINA RAILWAY 19 BUREAU Group |
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| TA01 | Transfer of patent application right |