CN211474553U - Propelling hydraulic system of rock drill - Google Patents
Propelling hydraulic system of rock drill Download PDFInfo
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- CN211474553U CN211474553U CN201922147993.6U CN201922147993U CN211474553U CN 211474553 U CN211474553 U CN 211474553U CN 201922147993 U CN201922147993 U CN 201922147993U CN 211474553 U CN211474553 U CN 211474553U
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Abstract
The utility model 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 utility model discloses simplify hydraulic system, reduced hydraulic oil and leaked, improved the reliability of system.
Description
Technical Field
The utility model belongs to the technical field of rock drill propulsion hydraulic system of rock drill rig in the pit, in particular to rock drill propulsion hydraulic system of automatic drilling rock drill rig in pit.
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.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rock drill impels hydraulic system to the not enough of above-mentioned prior art existence to improve the reliability that impels hydraulic system, simplify the hydraulic line, reduce hydraulic oil and leak.
The utility model discloses a realize through 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 utility model, 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).
In the utility model, the pressure oil port of the propulsion pressure control valve (1) is communicated with the 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 (8) 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 (9) through high-pressure oil pipes.
The beneficial technical effects of the utility model, hydraulic system has been simplified, hydraulic oil leakage is reduced. The reliability of the system is improved.
Drawings
Fig. 1 is an oil circuit control diagram of 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 one-way valve 2 and the second one-way valve 3 are connected in parallel, inlets of the first one-way valve 2 and the second one-way valve 3 are respectively externally connected with pressure oil ports LSA and LSB of the propulsion pressure control valve 1, and outlets of the first one-way valve 2 and the second one-way valve 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 first check valve 2 and the second 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 among the first check valve 2, the second check valve 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 8 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 9 through high-pressure oil pipes.
The utility model discloses a theory of operation is:
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.
What has been described above is only a preferred embodiment of the present invention, and is not limited to the present invention. It should be noted that other modifications and equivalents may be made by those skilled in the art in light of the teachings of the present disclosure to achieve the same purpose, and should be construed as within the scope of the present disclosure.
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 first check valve (2) and the second check valve (3) are respectively externally connected with a pressure oil port of the propulsion pressure control valve (1), and outlets of the first check valve (2) and the second check valve (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 (8) 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 (9) through high-pressure oil pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922147993.6U CN211474553U (en) | 2019-12-04 | 2019-12-04 | Propelling hydraulic system of rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922147993.6U CN211474553U (en) | 2019-12-04 | 2019-12-04 | Propelling hydraulic system of rock drill |
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| Publication Number | Publication Date |
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| CN211474553U true CN211474553U (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922147993.6U Active CN211474553U (en) | 2019-12-04 | 2019-12-04 | Propelling hydraulic system of rock drill |
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| CN (1) | CN211474553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294272A (en) * | 2021-12-28 | 2022-04-08 | 中南大学 | Hydraulic impactor control system and hydraulic rock drill |
-
2019
- 2019-12-04 CN CN201922147993.6U patent/CN211474553U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294272A (en) * | 2021-12-28 | 2022-04-08 | 中南大学 | Hydraulic impactor control system and hydraulic rock drill |
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