CN112112862A - Flexibly-connected rock splitting rod - Google Patents
Flexibly-connected rock splitting rod Download PDFInfo
- Publication number
- CN112112862A CN112112862A CN202011028218.XA CN202011028218A CN112112862A CN 112112862 A CN112112862 A CN 112112862A CN 202011028218 A CN202011028218 A CN 202011028218A CN 112112862 A CN112112862 A CN 112112862A
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- China
- Prior art keywords
- cylinder body
- cylinder
- piston
- ball seat
- rock
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21C37/08—Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked
Abstract
The invention relates to a flexibly connected rock splitting rod, and belongs to the field of mine construction. The technical scheme is as follows: the oil cylinder comprises a cylinder body, a piston and a cylinder cover, wherein the piston is arranged in the cylinder body, and the cylinder cover is arranged at the end part of the cylinder body; an upper oil inlet and a lower oil inlet are arranged at the positions of the cylinder body, which are radially close to the cylinder cover; the oil cylinders are connected in series and connected with the ball seat through the ball head. The invention fundamentally solves the problem of splitting rod stress concentration caused by irregular rock holes; the oil cylinder is reset by a spring, only one-side oil supply is needed, the oil circuit design of the splitting device is simplified, and the splitting device is convenient to process and manufacture.
Description
Technical Field
The invention relates to a rock splitting device, and belongs to the field of mine construction.
Background
The hydraulic rock splitter splits the rock by means of hydraulic machinery. The rock is rapidly expanded and cracked so as to facilitate the efficient crushing of the rock, and the rock crushing has great technical advantages under the condition that explosives cannot be used in mining and building earth and stone engineering. The hydraulic rock splitter utilizes hydraulic pressure to expand and split rocks, and the rocks are split and broken without vibration and sound. The hydraulic splitting machine can easily crush thousands of cubes of hard rocks, and is powerful to achieve the construction effect of large spacing and large cracks even if no hollow face exists, which is only available in the industry of hydraulic splitting machines. Compared with a mode of using a breaking hammer, an expansion breaking agent and a wheel disc according to a cutting machine, the speed is more than ten times faster, and the cost is lower.
Patent CN105003264A discloses a splitting system of a hydraulic rock splitter. The technical scheme is as follows: including splitting piece and middle voussoir, the middle voussoir inserts and mutually supports between the two symmetrical splitting pieces, the scarf of splitting piece is provided with the recess, the recess in be provided with kingpin or ball, two scarf of middle voussoir on be equipped with the bar groove, the bar inslot fill have carbide. According to the technical scheme, a roller pin or a ball is added on the basis of the existing wedge-shaped block type splitting rod, and two wedge-shaped surfaces of a wedge block are protected by setting hard alloy. The same problems exist with conventional wedge-shaped block-type cleaving rods: 1. the spreading range of the splitting rod is very limited, and the use condition of the splitting rod is limited; 2. because rock drilling is irregular, the splitting rod is locally stressed, and the splitting rod is bent and damaged.
Patent CN204646238U discloses a splitting rod of splitting machine, its application method is, first through drilling equipment drilling go out the cylinder hole on the rock, put the splitting rod into the cylinder hole again, supply hydraulic oil for the splitting rod by the hydraulic pump again, the hydraulic pressure in the splitting rod increases gradually to promote the piston in the splitting rod to stretch out and split the rock. The problems of the technology are as follows: the cylindrical holes drilled in the rock do not reach the standard, the shape of the cylindrical holes is irregular probably due to negligence of constructors or defects of equipment, the splitting rods are greatly pressed at all positions in the process of splitting the rock due to the splitting rods, and when the irregular condition of the cylindrical holes is serious, the splitting rods can be cracked or broken integrally due to uneven stress at all positions. Finally resulting in the condition that the whole splitting rod device is scrapped. This situation undoubtedly increases the cost of using the cleaving rod to cleave the rock, resulting in waste of production data.
Patent CN106150499A discloses a split cleaving rod. The scheme is as follows: the split splitting rod comprises a rod shell, a sealing end cover, a joint group arranged on the sealing end cover and a hydraulic system arranged in the rod shell and used for driving a piston to stretch out and draw back, wherein the rod shell comprises a plurality of hydraulic cylinders stacked end to end and a plurality of connecting pieces, one end of each hydraulic cylinder is provided with a boss, the other end of each hydraulic cylinder is provided with a groove matched with the boss in shape, and the boss of each hydraulic cylinder extends into the groove of the next hydraulic cylinder; the connecting piece is provided with a connecting part and a limiting part, the connecting part is in a threaded rod shape, the limiting part is provided with a connecting blind hole, the connecting blind hole is divided into a head screwing hole and a tail screwed hole, and the connecting part of the connecting piece extends into the connecting blind hole of the next connecting piece and is in threaded connection with the screwed hole; the hydraulic cylinder is provided with connecting through holes, the connecting through holes are divided into a limiting section and an interconnecting section, and the connecting part of the connecting piece penetrates through the interconnecting section and the limiting part of the connecting piece to extend into the limiting section.
Compared with the prior art, the technical scheme has the advantages that the original integrally-formed rod body is changed into the hydraulic cylinders which are stacked from head to tail, and the integrally-formed rod shell can be scrapped as long as one part of the integrally-formed rod shell is cracked or broken. When the hydraulic cylinder is damaged due to various factors, the technical scheme only needs to dismount the damaged hydraulic cylinder and replace the damaged hydraulic cylinder with a new hydraulic cylinder, so that the whole splitting rod is not abandoned, and the use cost of the scheme is reduced. However, according to the technical scheme, a plurality of oil cylinders are connected in series for use, and the oil cylinder bodies are rigidly connected, so that the problem of uneven stress of the splitting rod caused by irregular cylinders drilled on the rock cannot be fundamentally solved.
To sum up, current hydraulic pressure splitting stick adopts miniaturized design in order to reduce rock trompil size, can face the splitting stick because rock hole is irregular arouses the splitting stick atress uneven, causes the problem that the splitting stick warp the damage. If the wall thickness of the splitting rod cylinder body is increased, the strength of the splitting rod cylinder body is increased; the problem that the diameter of the splitting rod is too large, a large rock hole needs to be formed, and the construction cost in the early stage is increased is solved. In addition, a plurality of oil cylinders are designed in a split mode, the oil cylinders are fixedly connected, and a single oil cylinder can be replaced, but the problem of local stress concentration of the splitting bar cannot be fundamentally solved. Therefore, the flexibly-connected rock splitting rod has practical significance and application prospect, and innovation and research of related technologies have great application value.
Disclosure of Invention
The purpose of the invention is as follows: the hydraulic cleaving rod with certain self-adaptability can adapt to the cleaving operation of irregular rock holes, and meanwhile, when the cleaving rod is locally damaged, a part can be replaced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows.
The utility model provides a flexible connection's rock splitting stick, includes hydro-cylinder, bulb and ball seat, its characterized in that: the oil cylinder comprises a cylinder body, a piston and a cylinder cover, wherein the piston is arranged in the cylinder body, and the cylinder cover is arranged at the end part of the cylinder body; an upper oil inlet and a lower oil inlet are arranged at the positions of the cylinder body, which are radially close to the cylinder cover; the oil cylinders are connected in series and connected with the ball seat through the ball head.
The piston is a stepped shaft, the large end of the piston is arranged in the cylinder body, a sealing ring is arranged between the large end of the piston and the cylinder body, and the small end of the piston extends out of the cylinder body; the other end of the cylinder body at the extending end of the piston is provided with a cylinder cover and is connected with the cylinder cover through a bolt.
The compression spring is arranged in the cylinder body and sleeved on the piston.
The ball head and the ball seat are matched and connected together through a spherical surface, and the ball head and the ball seat are respectively arranged on the cylinder bodies of two adjacent oil cylinders; a through hole is formed between the ball head and the ball seat, and the cylinder body is provided with a flow passage and is communicated with an oil inlet of the cylinder body and the middle through hole of the ball head/the ball seat.
Still include the leaf spring, its characterized in that: the whole V-shaped strip structure of the plate spring, the middle position of the plate spring is fixed on the ball seat, and the extending ends of the two sides of the plate spring clamp the two sides of the cylinder body.
Still include the gland, its characterized in that: the inner side of the gland is a spherical surface and matched with the ball head, the whole gland is in a circular ring shape and is divided into two semi-rings, and the gland is connected with the ball seat through a bolt and fixes the ball head.
The invention has the beneficial effects that: 1. the oil cylinders are flexibly connected, can move relatively and simultaneously keep the centering performance at a certain relative position, thereby fundamentally solving the problem of splitting rod stress concentration caused by irregular rock holes; 3. through the movable connection, the stress of the oil cylinder is greatly improved, the oil cylinder is favorably miniaturized, the size of a rock opening is reduced, and the construction efficiency is improved; 4. the oil cylinder is reset by a spring, only one-side oil supply is needed, the oil circuit design of the splitting device is simplified, and the splitting device is convenient to process and manufacture.
Drawings
Fig. 1 is a structural diagram of the oil cylinder in a furled state.
FIG. 2 is a schematic structural diagram of the extended state of the oil cylinder.
FIG. 3 is a partial view of FIG. 1
In the figure: 1. a cylinder body; 2. a piston; 3. a spring; 4. a seal ring; 5. a cylinder cover; 6. a ball seat; 7. a ball head; 8. a gland; 9. a leaf spring.
Detailed Description
The present invention is not limited to the following embodiments, and the specific embodiments may be determined according to the technical solution and the practical situation of the present invention. The present invention will be described below with reference to the accompanying drawings. The positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1 in the specification.
The oil cylinder comprises a cylinder body 1, a piston 2 and a cylinder cover 5, wherein the cylinder body 1 is integrally cylindrical, the piston 2 is arranged in the cylinder body 1, and the cylinder cover 5 is arranged at the end part of the cylinder body 1. The whole piston 2 is a stepped shaft, the large end of the piston 2 is arranged in the cylinder body 1, a sealing ring 4 is arranged between the large end of the piston 2 and the cylinder body 1, and the small end of the piston 2 extends out of the cylinder body 1. The other end of the cylinder body 1 at the extending end of the piston 2 is provided with a cylinder cover 5 and is connected with the cylinder cover by a bolt. The spring 3 is arranged in the cylinder body 1 and sleeved on the piston 2, and the spring 3 is a compression spring.
An upper oil inlet and a lower oil inlet are arranged at the positions of the cylinder body 1, which are radially close to the cylinder cover 5. The oil cylinders are connected in series and are connected with the ball seat 6 through the ball head 7.
The ball head 7 is matched and connected with the ball seat 6, and the connecting surface of the ball head 7 and the ball seat 6 is a spherical surface. The inner side of the gland 8 is a spherical surface and is matched with the ball head 7, the gland 8 is integrally annular and is split into two semi-rings, and the gland 8 is in bolted connection with the ball seat 6 and fixes the ball head 7.
A ball head 7 and a ball seat 6 are arranged between two adjacent oil cylinders; the ball head 7 and the ball seat 6 are respectively arranged at the middle position of the outer side of the cylinder body 1 of two adjacent oil cylinders and are fixed by bolts. A through hole is arranged between the ball head 7 and the ball seat 6, and the cylinder body 1 is axially provided with a flow passage and is communicated with an oil inlet of the cylinder body 1 and the middle through hole of the ball head 7/the ball seat 6.
The whole plate spring 9 is of a V-shaped strip structure, the middle position of the plate spring 9 is fixed on the ball seat 6 or the gland 8, and the extending ends of two sides of the plate spring 9 clamp two sides of the cylinder body 1. Carry out position adjustment to a plurality of cylinder bodies 1 like this, keep between the cylinder body 1 side by side neat, make things convenient for a plurality of cylinder bodies 1 to go into in the rock hole down.
The principle of the invention is as follows: a plurality of oil cylinders are connected in series and fixed together through a ball head 7 and a ball seat 6. A plurality of oil cylinders are communicated with hydraulic oil through holes in the middle of the ball head 7 and the ball seat 6, and the high-pressure oil drives the piston 2 to extend out to complete rock splitting. In the process that the piston 2 extends out, the ball head 7 and the ball seat 6 rotate relatively, a certain range of motion can exist among the oil cylinders, and the local stress concentration of the cylinder body 1 caused by the irregular shape of the rock hole is avoided. After splitting is completed, the oil inlet of the oil cylinder is decompressed, the spring 3 pushes the piston 2 to return, and the piston 2 is taken out of the splitting device after being folded. When the individual oil cylinder is damaged, the oil cylinder can be repaired and replaced.
Claims (6)
1. The utility model provides a flexible connection's rock splitting stick, includes hydro-cylinder, bulb and ball seat, its characterized in that: the oil cylinder comprises a cylinder body, a piston and a cylinder cover, wherein the piston is arranged in the cylinder body, and the cylinder cover is arranged at the end part of the cylinder body; an upper oil inlet and a lower oil inlet are arranged at the positions of the cylinder body, which are radially close to the cylinder cover; the oil cylinders are connected in series and connected with the ball seat through the ball head.
2. A flexibly linked rock cleaving bar according to claim 1, wherein: the piston is a stepped shaft, the large end of the piston is arranged in the cylinder body, a sealing ring is arranged between the large end of the piston and the cylinder body, and the small end of the piston extends out of the cylinder body; the other end of the cylinder body at the extending end of the piston is provided with a cylinder cover and is connected with the cylinder cover through a bolt.
3. A flexibly linked rock cleaving bar according to claim 1, wherein: the compression spring is arranged in the cylinder body and sleeved on the piston.
4. A flexibly linked rock cleaving bar according to claim 1, wherein: the ball head and the ball seat are matched and connected together through a spherical surface, and the ball head and the ball seat are respectively arranged on the cylinder bodies of two adjacent oil cylinders; a through hole is formed between the ball head and the ball seat, and the cylinder body is provided with a flow passage and is communicated with an oil inlet of the cylinder body and the middle through hole of the ball head/the ball seat.
5. A flexibly connected rock cleaving bar according to claim 1, further comprising a leaf spring, wherein: the whole V-shaped strip structure of the plate spring, the middle position of the plate spring is fixed on the ball seat, and the extending ends of the two sides of the plate spring clamp the two sides of the cylinder body.
6. A flexibly connected rock cleaving bar according to claim 1, further comprising a gland, wherein: the inner side of the gland is a spherical surface and matched with the ball head, the whole gland is in a circular ring shape and is divided into two semi-rings, and the gland is connected with the ball seat through a bolt and fixes the ball head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028218.XA CN112112862B (en) | 2020-09-26 | 2020-09-26 | Flexibly-connected rock splitting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028218.XA CN112112862B (en) | 2020-09-26 | 2020-09-26 | Flexibly-connected rock splitting rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112112862A true CN112112862A (en) | 2020-12-22 |
| CN112112862B CN112112862B (en) | 2022-08-02 |
Family
ID=73797344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011028218.XA Active CN112112862B (en) | 2020-09-26 | 2020-09-26 | Flexibly-connected rock splitting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112112862B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565504A (en) * | 2021-07-09 | 2021-10-29 | 中铁二十一局集团轨道交通工程有限公司 | Hydraulic rock breaking process capable of simultaneously splitting multiple points in drill hole |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB575040A (en) * | 1944-02-21 | 1946-01-31 | Charles Edwin Hair | Improvements in or relating to breaking-down machines for use in mining |
| GB590193A (en) * | 1944-04-13 | 1947-07-10 | Charles Edwin Hair | Improvements in mining machines |
| KR20050097239A (en) * | 2004-04-01 | 2005-10-07 | 유병중 | Hydraulic cylinder rock splitter |
| CN202520683U (en) * | 2012-03-05 | 2012-11-07 | 常州海宏液压设备有限公司 | Ball joint jacking hydraulic cylinder |
| CN204646238U (en) * | 2015-04-21 | 2015-09-16 | 重庆市博平液压机械有限公司 | The splitting rod of stone-splitter |
| CN205225257U (en) * | 2015-11-13 | 2016-05-11 | 武汉市力特达机械设备有限公司 | Split rock device |
| CN106150499A (en) * | 2016-07-05 | 2016-11-23 | 重庆市博平液压机械有限公司 | Split splitting rod |
| CN110318754A (en) * | 2019-07-19 | 2019-10-11 | 湖南烈岩科技有限公司 | With the splitting stick that structure is connected in series |
-
2020
- 2020-09-26 CN CN202011028218.XA patent/CN112112862B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB575040A (en) * | 1944-02-21 | 1946-01-31 | Charles Edwin Hair | Improvements in or relating to breaking-down machines for use in mining |
| GB590193A (en) * | 1944-04-13 | 1947-07-10 | Charles Edwin Hair | Improvements in mining machines |
| KR20050097239A (en) * | 2004-04-01 | 2005-10-07 | 유병중 | Hydraulic cylinder rock splitter |
| CN202520683U (en) * | 2012-03-05 | 2012-11-07 | 常州海宏液压设备有限公司 | Ball joint jacking hydraulic cylinder |
| CN204646238U (en) * | 2015-04-21 | 2015-09-16 | 重庆市博平液压机械有限公司 | The splitting rod of stone-splitter |
| CN205225257U (en) * | 2015-11-13 | 2016-05-11 | 武汉市力特达机械设备有限公司 | Split rock device |
| CN106150499A (en) * | 2016-07-05 | 2016-11-23 | 重庆市博平液压机械有限公司 | Split splitting rod |
| CN110318754A (en) * | 2019-07-19 | 2019-10-11 | 湖南烈岩科技有限公司 | With the splitting stick that structure is connected in series |
Non-Patent Citations (1)
| Title |
|---|
| 童海海: "液压劈裂机在石材开采中的应用", 《石材》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565504A (en) * | 2021-07-09 | 2021-10-29 | 中铁二十一局集团轨道交通工程有限公司 | Hydraulic rock breaking process capable of simultaneously splitting multiple points in drill hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112112862B (en) | 2022-08-02 |
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