CN110848182A - Propelling hydraulic system of rock drill - Google Patents
Propelling hydraulic system of rock drill Download PDFInfo
- Publication number
- CN110848182A CN110848182A CN201911227523.9A CN201911227523A CN110848182A CN 110848182 A CN110848182 A CN 110848182A CN 201911227523 A CN201911227523 A CN 201911227523A CN 110848182 A CN110848182 A CN 110848182A
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- pressure control
- pressure
- port
- 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 15
- 230000001141 propulsive effect Effects 0.000 claims 2
- 239000003921 oil Substances 0.000 abstract description 89
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 5
- 101100511858 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) LSB1 gene Proteins 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/025—Rock drills, i.e. jumbo drills
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a propelling hydraulic system of a rock drill, which comprises an oil tank (9), an oil pump (8), a multi-way valve (6), a propelling oil cylinder (7) and a propelling pressure control valve (1), wherein the oil tank, the oil pump, the multi-way valve (6) and the propelling oil cylinder are sequentially connected in series, and a pressure control oil port of the multi-way valve (6) is connected with the propelling pressure control valve (1); a pressure oil port and an oil return port are arranged on the valve body of the propulsion pressure control valve (1), and the pressure oil port of the propulsion pressure control valve is communicated with a pressure control oil port of the multi-way valve (6); the oil return port is communicated with an oil tank (9). The invention simplifies the hydraulic system, reduces the leakage of hydraulic oil and improves the reliability of the system.
Description
Technical Field
The invention belongs to the technical field of a rock drill propelling hydraulic system of an underground rock drilling rig, and particularly relates to a rock drill propelling hydraulic system of an underground automatic drilling rock drilling rig.
Background
The impact, rotation and propulsion of the rock drill of the underground rock drilling rig are mutually related, and the impact pressure, the rotation pressure and the propulsion pressure are mutually adjusted to finish the rock drilling operation. All pressure control is achieved by pilot operated valves in the hydraulic system. The disadvantages of such a system are: the system is complex, the pipelines are various, and the reason is not easy to find out when faults occur frequently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a pushing hydraulic system of a rock drill, which is used for improving the reliability of the pushing hydraulic system, simplifying a hydraulic pipeline and reducing hydraulic oil leakage.
The invention is realized by the following technical scheme.
A propulsion hydraulic system of a rock drill comprises an oil tank (9), an oil pump (8), a multi-way valve (6) and a propulsion oil cylinder (7) which are sequentially connected in series; the hydraulic control system also comprises a propulsion pressure control valve (1), and a pressure control oil port of the multi-way valve (6) is connected with the propulsion pressure control valve (1); a pressure oil port and an oil return port are arranged on the valve body of the propulsion pressure control valve (1), and the pressure oil port of the propulsion pressure control valve is communicated with a pressure control oil port of the multi-way valve (6); the oil return port is communicated with an oil tank (9).
In the invention, a first check valve (2), a second check valve (3), a proportional overflow valve (4) and a pressure sensor (5) are arranged in the propulsion pressure control valve (1); the first check valve (2) and the second check valve (3) are connected in parallel, inlets of the check valves (2 and 3) are respectively externally connected with a pressure oil port of the propulsion pressure control valve (1), and outlets of the check valves (2 and 3) are communicated with an inlet of the proportional overflow valve (4) and the pressure sensor (5); the outlet of the proportional overflow valve (4) is externally connected with an oil return port of the propulsion pressure control valve (1).
In the invention, a pressure oil port of a propulsion pressure control valve (1) is communicated with a pressure control oil port of a multi-way valve (6) through a high-pressure oil pipe; the oil return port of the propulsion pressure control valve (1) is communicated with the oil tank (9) through a high-pressure oil pipe; and the oil pump (9) is communicated with a pressure oil port of the multi-way valve (6), a working oil port of the multi-way valve (6) is communicated with an oil port of the propulsion oil cylinder (7), and an oil return port of the multi-way valve (6) is communicated with the oil tank (8) through high-pressure oil pipes.
The hydraulic system has the beneficial technical effects of simplifying the hydraulic system and reducing the leakage of hydraulic oil. The reliability of the system is improved.
Drawings
Fig. 1 is a diagram illustrating an oil passage control according to the present invention.
Wherein: 1-a propulsion pressure control valve, 2-a one-way valve, 3-a one-way valve, 4-a proportional overflow valve and 5-a pressure sensor; LSA, LSB-pressure oil port, T-oil return port.
6-a multi-way valve; p1-pressure oil port, T2-oil return port, A, B-working oil port, LSA1, LSB 1-pressure control oil port.
7-a propulsion oil cylinder; 8-an oil pump; 9-oil tank.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
A propulsion hydraulic system of a rock drill comprises an oil tank 9, an oil pump 8, a multi-way valve 6 and a propulsion oil cylinder 7 which are sequentially connected in series; the hydraulic control system also comprises a propulsion pressure control valve 1, wherein pressure control oil ports LSA1 and LSB1 of the multi-way valve 6 are connected with the propulsion pressure control valve 1; the valve body of the propulsion pressure control valve 1 is provided with pressure oil ports LSA, LSB and an oil return port T, and the pressure oil ports LSA and LSB are communicated with pressure control oil ports LSA1 and LSB1 of the multi-way valve 6; the oil return port T is communicated with the oil tank 9.
A first check valve 2, a second check valve 3, a proportional overflow valve 4 and a pressure sensor 5 are arranged in the propulsion pressure control valve 1; the first check valve 2 and the second check valve 3 are connected in parallel, inlets of the two check valves 2 and 3 are respectively externally connected with pressure oil ports LSA and LSB of the propulsion pressure control valve 1, and outlets of the two check valves 2 and 3 are communicated with an inlet of the proportional overflow valve 4 and the pressure sensor 5; the outlet of the proportional overflow valve 4 is externally connected with an oil return port T of the propulsion pressure control valve 1; the check valve 2 and the check valve 3 are connected in parallel and then connected in series with the proportional overflow valve 4; and a pressure sensor 5 is connected between the check valves 2 and 3 and the proportional overflow valve 4.
The pressure oil ports LSA and LSB of the propulsion pressure control valve 1 are communicated with the pressure control oil ports LSA1 and LSB1 of the multi-way valve 6 through high-pressure oil pipes; the oil return port T of the propulsion pressure control valve 1 is communicated with the oil tank 9 through a high-pressure oil pipe; the oil pump 9 is communicated with a pressure oil port P1 of the multi-way valve, a working oil port A, B of the multi-way valve is communicated with an oil port of the propulsion oil cylinder 7, and an oil return port T2 of the multi-way valve is communicated with the oil tank 8 through high-pressure oil pipes.
The working principle of the invention is as follows:
as shown in the figure I, the multi-way valve 6 is reversed, pressure oil from the oil pump 8 enters the multi-way valve 6 through a pressure oil port P2 of the multi-way valve 6, one way of pressure oil enters a rodless cavity of the propulsion oil cylinder through a working oil port A of the multi-way valve 6, oil in a rod cavity of the propulsion oil cylinder enters the multi-way valve 6 through a working oil port B of the multi-way valve 6 and returns to an oil tank through an oil return port T2 of the multi-way valve 6, and the propulsion oil cylinder extends out to push the rock drill to advance; one path of the pressure control oil port LSA1 of the multi-way valve 6, the pressure oil port LSA of the propulsion pressure control valve block 1 and the check valve 3 enter the electric proportional overflow valve 4 and the pressure sensor 5, and the propulsion pressure is set by the proportional overflow valve 4; the pressure sensor 5 feeds back the propelling pressure value in real time.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. It should be noted that other equivalent modifications can be made by those skilled in the art in light of the teachings of the present invention, and all such modifications can be made as are within the scope of the present invention.
Claims (3)
1. The utility model provides a propelling hydraulic system of rock drill, includes oil tank (9), oil pump (8), multiple unit valve (6), propulsion cylinder (7) of series connection in proper order, its characterized in that: the hydraulic control system also comprises a propulsion pressure control valve (1), and a pressure control oil port of the multi-way valve (6) is connected with the propulsion pressure control valve (1); a pressure oil port and an oil return port are arranged on the valve body of the propulsion pressure control valve (1), and the pressure oil port of the propulsion pressure control valve is communicated with a pressure control oil port of the multi-way valve (6); the oil return port is communicated with an oil tank (9).
2. A propulsive hydraulic system as defined in claim 1, wherein: a first one-way valve (2), a second one-way valve (3), a proportional overflow valve (4) and a pressure sensor (5) are arranged in the propulsion pressure control valve (1); the first check valve (2) and the second check valve (3) are connected in parallel, inlets of the check valves (2 and 3) are respectively externally connected with a pressure oil port of the propulsion pressure control valve (1), and outlets of the check valves (2 and 3) are communicated with an inlet of the proportional overflow valve (4) and the pressure sensor (5); the outlet of the proportional overflow valve (4) is externally connected with an oil return port of the propulsion pressure control valve (1).
3. A propulsive hydraulic system as defined in claim 1 or 2 wherein: a pressure oil port of the propulsion pressure control valve (1) is communicated with a pressure control oil port of the multi-way valve (6) through a high-pressure oil pipe; the oil return port of the propulsion pressure control valve (1) is communicated with the oil tank (9) through a high-pressure oil pipe; and the oil pump (9) is communicated with a pressure oil port of the multi-way valve (6), a working oil port of the multi-way valve (6) is communicated with an oil port of the propulsion oil cylinder (7), and an oil return port of the multi-way valve (6) is communicated with the oil tank (8) through high-pressure oil pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227523.9A CN110848182A (en) | 2019-12-04 | 2019-12-04 | Propelling hydraulic system of rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227523.9A CN110848182A (en) | 2019-12-04 | 2019-12-04 | Propelling hydraulic system of rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110848182A true CN110848182A (en) | 2020-02-28 |
Family
ID=69607515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911227523.9A Pending CN110848182A (en) | 2019-12-04 | 2019-12-04 | Propelling hydraulic system of rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110848182A (en) |
-
2019
- 2019-12-04 CN CN201911227523.9A patent/CN110848182A/en active Pending
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| PB01 | Publication | ||
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