CN111456618B - Secondary impact hydraulic breaking hammer - Google Patents
Secondary impact hydraulic breaking hammer Download PDFInfo
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- CN111456618B CN111456618B CN202010277415.9A CN202010277415A CN111456618B CN 111456618 B CN111456618 B CN 111456618B CN 202010277415 A CN202010277415 A CN 202010277415A CN 111456618 B CN111456618 B CN 111456618B
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- drill rod
- side wall
- sleeve body
- hole
- reinforcing sleeve
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 52
- 230000007704 transition Effects 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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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
- E21B1/00—Percussion drilling
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a secondary impact hydraulic breaking hammer, which comprises a middle shell, a front shell, a hydraulic main drill rod and a middle drill rod of the hydraulic breaking hammer, wherein the front shell is fixed on the bottom surface of the middle shell, a central through hole is formed in the middle of a bottom plate of the front shell, the main drill rod is inserted and sleeved in the central through hole, internal threads are formed on the inner side wall of the front shell, an inner reinforcing sleeve body is screwed in the internal threads, the main drill rod is inserted and sleeved in the inner reinforcing sleeve body, and a protruding sleeve body at the lower part of the inner reinforcing sleeve body is inserted and sleeved in the central through hole. The invention can realize continuous impact of the middle drill rod and the main drill rod when the piston rod of the hydraulic cylinder is impacted for a single time, realizes secondary impact, greatly improves the crushing efficiency and effect, and ensures that the main drill rod is not in direct contact with the front shell by the inner reinforcing sleeve body arranged in the front shell, thereby reducing abrasion and prolonging the service life.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a secondary impact hydraulic breaking hammer.
Background
The drill rod of the existing hydraulic breaking hammer is generally a single rod body, the drill rod can impact the single rod body through the back-and-forth expansion and contraction of a piston rod of a hydraulic cylinder in the hydraulic breaking hammer, the single rod body can be continuously impacted to break, the drill rod is inserted in a front shell, a wear-resistant mechanism is not arranged between the drill rod and the front shell, the drill rod and the front shell are easy to rub and wear, the service life is influenced, meanwhile, the single rod body only has one impact process in each impact, the frequency is not too high, the effect is limited, and the impact process is not ideal.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a secondary impact hydraulic breaking hammer which can realize continuous impact of a middle drill rod and a main drill rod when a piston rod of a hydraulic cylinder is impacted for a single time so as to realize secondary impact, greatly improve the breaking efficiency and effect, and ensure that the main drill rod is not in direct contact with a front shell by an inner reinforcing sleeve body arranged in the front shell, reduce abrasion and prolong the service life.
The scheme for solving the technical problems is as follows:
a secondary impact hydraulic breaking hammer comprises a middle shell, a front shell, a hydraulic main drill rod and a middle drill rod of the hydraulic breaking hammer, wherein the front shell is fixed on the bottom surface of the middle shell;
the middle part of the main drill rod is formed with an axial vertical through hole, the middle drill rod is inserted and sleeved in the axial vertical through hole, an impact sharp part at the bottom end of the middle drill rod extends out of the bottom end of the axial vertical through hole, the bottom end of a piston rod of the middle shell extends out of the bottom surface of the middle shell and extends into the inner reinforcing sleeve body, and the bottom end of the piston rod is pressed against the top surfaces of the main drill rod and the middle drill rod.
A large-diameter hole section is formed in the inner side wall of the upper portion of the axial vertical through hole, an extending edge is formed on the outer side wall of the top of the middle drill rod, and the extending edge is inserted into the large-diameter hole section in a sleeved mode.
An extending annular convex edge is formed on the inner side wall of the bottom of the inner reinforcing sleeve body, a radially extending limiting ring portion is formed on the outer side wall of the top of the main drill rod, and the bottom surface of the limiting ring portion is pressed against the top surface of the extending annular convex edge.
An oblique transition wall surface is formed between the bottom of the extending annular convex edge and the inner side wall of the lower protruding sleeve body, a transition reinforcing portion is formed on the outer side wall of the main drill rod on the lower portion of the limiting ring portion, the transition reinforcing portion is inserted in the extending annular convex edge, the bottom surface of the transition reinforcing portion is an oblique wall surface, and the transition reinforcing portion is pressed on the oblique transition wall surface.
A plurality of annular grooves are formed in the inner side wall of the lower protruding sleeve body, the sealing ring is nested in the annular grooves, and the inner side wall of the sealing ring is tightly attached to the outer side wall of the main drill rod.
The large-diameter hole section is inserted and sleeved with a buffer spring, the upper part of the middle drill rod is inserted and sleeved in the buffer spring, the top end of the buffer spring is stressed on the bottom surface of the extending edge, and the bottom end of the buffer spring is stressed on the bottom end surface of the large-diameter hole section.
The drill rod comprises an axial vertical through hole, a middle drill rod and a drill rod, wherein the inner side wall of the axial vertical through hole is inserted and sleeved with a wear-resistant reinforcing sleeve, the middle drill rod is inserted and sleeved in the wear-resistant reinforcing sleeve, the outer side wall of the wear-resistant reinforcing sleeve is tightly attached to the inner side wall of the axial vertical through hole, and the inner side wall of the wear-resistant reinforcing sleeve is tightly attached to the inner side wall of the middle drill rod.
The top outer side wall of the wear-resistant reinforcing sleeve is formed with an extending edge, the bottom surface of the extending edge is pressed against the bottom end surface of the large-diameter hole section, and the bottom end of the buffer spring is forced on the top surface of the extending edge.
And the top surface of the limiting ring part is fixedly provided with a wear-resistant reinforcing annular part.
And a middle wear-resistant reinforcing part is fixed at the top of the extending edge and the middle drill rod.
The invention has the following outstanding effects: compared with the prior art, the hydraulic cylinder has the advantages that continuous impact of the middle drill rod and the main drill rod can be realized when the piston rod of the hydraulic cylinder is impacted for a single time, secondary impact is realized, the crushing efficiency and the crushing effect are greatly improved, and the main drill rod is not in direct contact with the front shell due to the inner reinforcing sleeve body arranged in the front shell, so that abrasion is reduced, and the service life is prolonged.
Drawings
FIG. 1 is a schematic view of a partial structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of the uncompressed configuration of the main and center drill rods of the present invention.
Detailed Description
In an embodiment, as shown in fig. 1 to 3, a secondary impact hydraulic breaker includes a middle housing 100, a front housing 40, a hydraulic main drill rod 10 and a middle drill rod 20 of the hydraulic breaker, wherein the front housing 40 is fixed on the bottom surface of the middle housing 100, a central through hole 41 is formed in the middle of the bottom plate of the front housing 40, the main drill rod 10 is inserted and sleeved in the central through hole 41, an internal thread is formed on the inner side wall of the front housing 40, the internal reinforcement sleeve 42 is screwed in the internal thread, the main drill rod 10 is inserted and sleeved in the internal reinforcement sleeve 42, and a lower boss sleeve 43 of the internal reinforcement sleeve 42 is inserted and sleeved in the central through hole 41;
an axial vertical through hole 11 is formed in the middle of the main drill rod 10, the middle drill rod 20 is inserted into the axial vertical through hole 11, an impact sharp part 21 at the bottom end of the middle drill rod 20 extends out of the bottom end of the axial vertical through hole 11, the bottom end of a piston rod of the middle shell 100 extends out of the bottom surface of the middle shell 100 and extends into the inner reinforcing sleeve body 42, and the bottom end of the piston rod is pressed against the top surfaces of the main drill rod 10 and the middle drill rod 20.
Further, a large-diameter hole section 12 is formed on the inner side wall of the upper portion of the axial vertical through hole 11, an extension edge 22 is formed on the outer side wall of the top portion of the middle drill rod 20, and the extension edge 22 is inserted into the large-diameter hole section 12.
Further, the inner side wall of the inner jacket body 42 is formed with an extended annular bead 44 at the bottom, the outer side wall of the main drill rod 10 at the top is formed with a radially extended limit ring 13, and the bottom surface of the limit ring 13 is pressed against the top surface of the extended annular bead 44.
Furthermore, an inclined transition wall surface 45 is formed between the bottom of the extending annular convex edge 44 and the inner side wall of the lower convex sleeve body 43, a transition reinforcing part 19 is formed on the outer side wall of the main drill rod 10 at the lower part of the limiting ring part 13, the transition reinforcing part 19 is inserted into the extending annular convex edge 44, and the bottom surface of the transition reinforcing part 19 is an inclined wall surface which is pressed against the inclined transition wall surface 45.
Furthermore, a plurality of annular grooves are formed on the inner side wall of the lower protruding sleeve body 43, the sealing ring 3 is nested in the annular grooves, and the inner side wall of the sealing ring 3 is tightly attached to the outer side wall of the main drill rod 10.
Further, the large diameter hole section 12 is inserted with the buffer spring 1, the upper portion of the middle drill rod 20 is inserted in the buffer spring 1, the top end of the buffer spring 1 is forced on the bottom surface of the extending edge 22, and the bottom end of the buffer spring 1 is forced on the bottom end surface of the large diameter hole section 12.
Furthermore, the inner side wall of the axial vertical through hole 11 is inserted with a wear-resistant reinforcing sleeve 30, the middle drill rod 20 is inserted in the wear-resistant reinforcing sleeve 30, the outer side wall of the wear-resistant reinforcing sleeve 30 is tightly attached to the inner side wall of the axial vertical through hole 11, and the inner side wall of the wear-resistant reinforcing sleeve 30 is tightly attached to the inner side wall of the middle drill rod 20.
Further, the top outer side wall of the wear-resistant reinforcing sleeve 30 is formed with an extension edge 31, the bottom surface of the extension edge 31 is pressed against the bottom end surface of the large-diameter hole section 12, and the bottom end of the buffer spring 1 is pressed against the top surface of the extension edge 22.
Further, the top surface of the limit ring part 13 is fixed with the wear-resistant reinforced annular part 2.
Furthermore, a middle wear-resistant reinforcement 4 is fixed to the top of the extension 22 and the middle drill rod 20.
Further, the impact sharp portion 21 at the bottom end of the middle drill rod 20 is a cross sharp portion, a straight sharp portion, or a conical sharp portion.
The working principle is as follows: when the drill rod is used, when the piston rod of the middle shell 100 impacts the main drill rod 10 and the middle drill rod 20, the piston rod impacts the top of the middle drill rod 20 firstly to realize that the sharp part 21 of the middle drill rod 20 extends out of the bottom end of the axial vertical through hole 11 and carries out primary crushing impact on a crushed part, and simultaneously, the piston rod impacts the top surface of the main drill rod 10 when being pressed downwards gradually, so that the main drill rod 10 and the middle drill rod 20 impact forwards again, and at the moment, the main drill rod 10 impacts stones or wall surfaces around the sharp part 21 of the middle drill rod 20 again, so that secondary impact is realized, the impact effect is good, and the efficiency is high;
and the inner reinforcing sleeve body 42, the wear-resistant reinforcing sleeve 30, the wear-resistant reinforcing annular part 2 and the middle wear-resistant reinforcing part 4 play roles in resisting wear and bearing direct impact, so that the service lives of the main drill rod 10 and the middle drill rod 20 are prolonged.
An oblique transition wall surface 45 is formed between the bottom of the extending annular convex edge 44 and the inner side wall of the lower convex sleeve body 43, a transition reinforcing part 19 is formed on the outer side wall of the main drill rod 10 at the lower part of the limiting ring part 13, the transition reinforcing part 19 is inserted into the extending annular convex edge 44, the bottom surface of the transition reinforcing part 19 is an oblique wall surface and is pressed on the oblique transition wall surface 45, the connection strength between the limiting ring part 13 of the main drill rod 10 and the main drill rod 10 is increased through the transition reinforcing part 19, and the service life of the drill rod is guaranteed.
Finally, the above embodiments are only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (8)
1. A secondary impact hydraulic breaking hammer comprises a middle shell (100), a front shell (40), a hydraulic main drill rod (10) and a middle drill rod (20) of the hydraulic breaking hammer, wherein the front shell (40) is fixed on the bottom surface of the middle shell (100), and is characterized in that: a central through hole (41) is formed in the middle of a bottom plate of the front shell (40), a main drill rod (10) is inserted and sleeved in the central through hole (41), internal threads are formed on the inner side wall of the front shell (40), an inner reinforcing sleeve body (42) is screwed in the internal threads, the main drill rod (10) is inserted and sleeved in the inner reinforcing sleeve body (42), and a lower protruding sleeve body (43) of the inner reinforcing sleeve body (42) is inserted and sleeved in the central through hole (41);
an axial vertical through hole (11) is formed in the middle of the main drill rod (10), the middle drill rod (20) is inserted into the axial vertical through hole (11), an impact sharp part (21) at the bottom end of the middle drill rod (20) extends out of the bottom end of the axial vertical through hole (11), the bottom end of a piston rod of the middle shell (100) extends out of the bottom surface of the middle shell (100) and into the inner reinforcing sleeve body (42), and the bottom end of the piston rod is pressed against the top surfaces of the main drill rod (10) and the middle drill rod (20);
a large-diameter hole section (12) is formed in the inner side wall of the upper part of the axial vertical through hole (11), an extending edge (22) is formed in the outer side wall of the top of the middle drill rod (20), and the extending edge (22) is inserted into the large-diameter hole section (12);
the large-diameter hole section (12) is sleeved with a buffer spring (1) in an inserting mode, the upper portion of the middle drill rod (20) is sleeved in the buffer spring (1) in an inserting mode, the top end of the buffer spring (1) exerts force on the bottom face of the extending edge (22), and the bottom end of the buffer spring (1) exerts force on the bottom end face of the large-diameter hole section (12).
2. A secondary impact hydraulic demolition hammer as claimed in claim 1 wherein: an extending annular convex edge (44) is formed on the inner side wall of the bottom of the inner reinforcing sleeve body (42), a radially extending limiting ring portion (13) is formed on the outer side wall of the top of the main drill rod (10), and the bottom surface of the limiting ring portion (13) is pressed against the top surface of the extending annular convex edge (44).
3. A secondary impact hydraulic demolition hammer as claimed in claim 2, characterized in that: an oblique transition wall surface (45) is formed between the bottom of the extending annular convex edge (44) and the inner side wall of the lower convex sleeve body (43), a transition reinforcing part (19) is formed on the outer side wall of the main drill rod (10) at the lower part of the limiting ring part (13), the transition reinforcing part (19) is inserted and sleeved in the extending annular convex edge (44), the bottom surface of the transition reinforcing part (19) is an oblique wall surface, and the transition reinforcing part is pressed on the oblique transition wall surface (45).
4. A secondary impact hydraulic demolition hammer as claimed in claim 1 wherein: a plurality of annular grooves are formed in the inner side wall of the lower protruding sleeve body (43), the sealing ring (3) is nested in the annular grooves, and the inner side wall of the sealing ring (3) is tightly attached to the outer side wall of the main drill rod (10).
5. A secondary impact hydraulic demolition hammer as claimed in claim 1 wherein: the drill rod structure is characterized in that a wear-resistant reinforcing sleeve (30) is inserted into the inner side wall of the axial vertical through hole (11), the middle drill rod (20) is inserted into the wear-resistant reinforcing sleeve (30), the outer side wall of the wear-resistant reinforcing sleeve (30) is tightly attached to the inner side wall of the axial vertical through hole (11), and the inner side wall of the wear-resistant reinforcing sleeve (30) is tightly attached to the inner side wall of the middle drill rod (20).
6. The secondary impact hydraulic demolition hammer according to claim 5, characterized in that: the outer side wall of the top of the wear-resistant reinforcing sleeve (30) is formed with an extending edge (31), the bottom surface of the extending edge (31) is pressed against the bottom end surface of the large-diameter hole section (12), and the bottom end of the buffer spring (1) is forced on the top surface of the extending edge (22).
7. A secondary impact hydraulic demolition hammer as claimed in claim 2, characterized in that: and the top surface of the limiting ring part (13) is fixed with a wear-resistant reinforcing annular part (2).
8. A secondary impact hydraulic demolition hammer as claimed in claim 1 wherein: and a middle wear-resistant reinforcing part (4) is fixed at the top of the extension edge (22) and the middle drill rod (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277415.9A CN111456618B (en) | 2020-04-10 | 2020-04-10 | Secondary impact hydraulic breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010277415.9A CN111456618B (en) | 2020-04-10 | 2020-04-10 | Secondary impact hydraulic breaking hammer |
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| Publication Number | Publication Date |
|---|---|
| CN111456618A CN111456618A (en) | 2020-07-28 |
| CN111456618B true CN111456618B (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010277415.9A Active CN111456618B (en) | 2020-04-10 | 2020-04-10 | Secondary impact hydraulic breaking hammer |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359906B (en) * | 2020-11-20 | 2022-04-12 | 中国矿业大学 | Laval type gas-liquid double-power dust-free rock breaking machine |
| CN116966948B (en) * | 2023-08-23 | 2024-06-21 | 苏州朗信智能科技有限公司 | Ferroalloy crushing system and crushing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010098557A3 (en) * | 2009-02-27 | 2010-11-18 | (주)아벡스 | Hydraulic breaker with automatic grease supply |
| CN201874570U (en) * | 2010-12-06 | 2011-06-22 | 上海工程技术大学 | Hydraulic breaking hammer |
| CN206015758U (en) * | 2016-08-31 | 2017-03-15 | 温岭市德克机械有限公司 | A kind of hydraulic breaking hammer |
| CN206487407U (en) * | 2017-02-17 | 2017-09-12 | 云南建投第十三建设有限公司 | A kind of percussive drill suitable for karst area |
-
2020
- 2020-04-10 CN CN202010277415.9A patent/CN111456618B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010098557A3 (en) * | 2009-02-27 | 2010-11-18 | (주)아벡스 | Hydraulic breaker with automatic grease supply |
| CN201874570U (en) * | 2010-12-06 | 2011-06-22 | 上海工程技术大学 | Hydraulic breaking hammer |
| CN206015758U (en) * | 2016-08-31 | 2017-03-15 | 温岭市德克机械有限公司 | A kind of hydraulic breaking hammer |
| CN206487407U (en) * | 2017-02-17 | 2017-09-12 | 云南建投第十三建设有限公司 | A kind of percussive drill suitable for karst area |
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| CN111456618A (en) | 2020-07-28 |
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Effective date of registration: 20220407 Address after: 325000 floor 3, building 1, No. 288, Oufan Road, oujiangkou industrial agglomeration zone, Wenzhou City, Zhejiang Province Applicant after: Wenzhou Yongan Heavy Industry Technology Co.,Ltd. Address before: 318000 room a, No. 74, Xinjian Road, Jiajia street, Jiaojiang District, Taizhou City, Zhejiang Province (self declaration, office only) Applicant before: Taizhou Muluo Automation Technology Co.,Ltd. |
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