CN211474559U - Impact hydraulic system of rock drill - Google Patents
Impact hydraulic system of rock drill Download PDFInfo
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- CN211474559U CN211474559U CN201922147985.1U CN201922147985U CN211474559U CN 211474559 U CN211474559 U CN 211474559U CN 201922147985 U CN201922147985 U CN 201922147985U CN 211474559 U CN211474559 U CN 211474559U
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Abstract
The utility model discloses an impact hydraulic system of rock drill, which comprises an oil tank (9), an oil pump (10), an impact hydraulic valve (1) and a rock drill (7) which are connected in series in sequence, and is characterized in that a valve body of the impact hydraulic valve (1) is provided with a pressure oil port, an oil return port, a control oil port, a first detection oil port, a second detection oil port and a working oil port; the pressure oil port is communicated with an outlet of the oil pump; the oil return port is communicated with an oil tank (9); the working oil port is communicated with an impact oil port of the rock drill (7); the control oil port is communicated with a control oil port of the oil pump (10); the first detection oil port is communicated with a pressure sensor (8); when the outlet pressure of the pump is detected, the second detection oil port is communicated with the pressure gauge through the pressure measuring point, and the second detection oil port is in a blocking state at ordinary times. 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 drilling rig rock drill strikes hydraulic system in the pit, concretely relates to strike hydraulic system of rock drill.
Background
The rock drill impact control of the underground rock drilling rig completes the impact operation of the rock drill through the interaction of a manual operation valve, a hydraulic control reversing valve and the like. All 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, the failure is frequent, the reason is not easy to find, and the leakage is easy.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art existence, the utility model provides a rock drill's impact hydraulic system to improve rock drill's impact hydraulic system's reliability, simplify hydraulic line, reduce hydraulic oil and leak.
The utility model discloses a realize through following technical scheme.
An impact hydraulic system of a rock drill comprises an oil tank (9), an oil pump (10), an impact hydraulic valve (1) and the rock drill (7) which are sequentially connected in series, wherein a valve body of the impact hydraulic valve (1) is provided with a pressure oil port, an oil return port, a control oil port, a first detection oil port, a second detection oil port and a working oil port; the pressure oil port is communicated with an outlet of the oil pump; the oil return port is communicated with an oil tank (9); the working oil port is communicated with an impact oil port of the rock drill (7); the control oil port is communicated with a control oil port of the oil pump (10); the first detection oil port is communicated with a pressure sensor (8); when the outlet pressure of the pump is detected, the second detection oil port is communicated with the pressure gauge through the pressure measuring point, and the second detection oil port is in a blocking state at ordinary times.
In the utility model, a proportional overflow valve (2), a first orifice (3), a second orifice (6), an electromagnetic directional valve (4) and a logic valve (5) are arranged in the impact hydraulic valve (1); the proportional overflow valve (2) and the first throttling hole (3) are connected in series to form a first branch; the electromagnetic reversing valve (4) and the second throttling hole (6) are connected in series to form a second branch; the logic valve (5), the first branch and the second branch are connected in parallel.
In the utility model, a pressure oil port of the impact hydraulic valve (1) is communicated with a pressure oil port of the oil pump (10) through a bolt; a working oil port of the impact hydraulic valve (1) is communicated with a pressure oil port of the rock drill (7) through a high-pressure oil pipe; a control oil port of the impact hydraulic valve (1) is communicated with a control oil port of the oil pump through a high-pressure oil pipe; a first detection oil port of the impact hydraulic valve (1) is communicated with a pressure sensor (8) through a high-pressure oil pipe; an oil suction port and an oil discharge port of the oil pump (10), an oil return port of the rock drill (7), an oil return port of the impact hydraulic valve (1) and the oil tank (9) are communicated through high-pressure oil pipes.
The utility model has the advantages of: the hydraulic system is simplified, the leakage of hydraulic oil is reduced, and the reliability of the system is improved.
Drawings
Fig. 1 is an oil circuit control diagram of the present invention.
Wherein: 1-valve body, P-pressure oil port, T-oil return port, X-control oil port, A-working oil port, G1, G2-detection oil port;
2-proportional overflow valve, 3-first orifice, 6-second orifice;
4-electromagnetic directional valve, 4.1-electromagnetic directional valve oil inlet, 4.2-electromagnetic directional valve working oil port, 4.3-electromagnetic directional valve oil return port;
the hydraulic control system comprises a 5-logic valve, a 5.1-logic valve oil inlet, a 5.2-logic valve working oil port and a 5.3-logic valve working oil port;
7-rock drill, 8-pressure sensor, 9-oil tank and 10-oil pump.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
A percussion hydraulic system for rock drilling machines: the hydraulic impact hammer comprises an oil tank 9, an oil pump 10, an impact hydraulic valve 1 and a rock drill 7 which are sequentially connected in series. The hydraulic control valve is characterized in that a valve body of the impact hydraulic valve 1 is provided with a pressure oil port P, an oil return port T, a control oil port X, detection oil ports G1 and G2 and a working oil port A; the pressure oil port P is communicated with an outlet of the pump 10; the oil return port T is communicated with the oil tank 9; the working oil port A is communicated with an impact oil port of the rock drill 7; the control oil port X is communicated with the control oil port X of the pump; the detection oil port G1 is communicated with the pressure sensor 8; when the outlet pressure of the pump 10 is detected, the detection oil port G2 is communicated with the pressure gauge through a pressure measuring point, and the detection oil port G2 is normally in a blocking state.
A pressure oil port P of the impact hydraulic valve 1 is communicated with a pressure oil port P of the pump 10 through a bolt; a working oil port A of the impact hydraulic valve 1 is communicated with a pressure oil port P1 of the rock drill 7 through a high-pressure oil pipe; a control oil port X of the impact hydraulic valve 1 is communicated with a control oil port X of the pump through a high-pressure oil pipe; and a detection oil port G1 of the impact hydraulic valve 1 is communicated with the pressure sensor 8 through a high-pressure oil pipe. An oil suction port S and an oil discharge port D1 of the pump 10, an oil return port T1 of the rock drill, an oil return port T of the impact hydraulic valve 1 and the oil tank 9 are communicated through high-pressure oil pipes.
The impact hydraulic valve 1 is internally provided with a proportional overflow valve 2, a throttling hole 3, an electromagnetic directional valve 4, a logic valve 5 and a throttling hole 6; the proportional overflow valve 2 and the first throttling hole 3 are connected in series to form a first branch; the electromagnetic directional valve 4 and the second throttling hole 6 are connected in series to form a second branch; the logic valve 5, the first branch and the second branch are connected in parallel.
The utility model discloses a theory of operation is: the pump 10 is started, pressure oil enters the impact hydraulic valve 1 from the port P, one path of the pressure oil passes through the throttling hole 6 and the oil inlet 4.1, the working oil port 4.2 of the electromagnetic directional valve 4 and enters the control oil port 5.3 of the logic valve 5, and the valve core of the logic valve 5 is closed under the action of spring force and the pressure oil; one path controls the variable of the pump through the throttling hole 3 and the control oil port X, and the proportional overflow valve 2 sets the system pressure. If the pressure of the proportional overflow valve 2 is zero, the pressure oil returns to the oil tank through the proportional overflow valve 2 and the oil return port T; if the set pressure of the proportional overflow valve 2 is a small value, the electromagnetic directional valve 4 is electrically switched, the working oil port 4.2 and the oil return port 4.3 are communicated, the control oil of the logic valve 5 returns to the oil tank through the control oil port 5.3, the oil return port 4.3 of the electromagnetic directional valve 4 and the oil return port T, the valve core of the logic valve 5 overcomes the spring force to open under the action of the pressure oil, the pressure oil enters the impact oil port P1 of the rock drill 7 through the oil inlet 5.1 of the logic valve 5, the working oil port 5.2 and the working oil port A of the valve body, the rock drill 7 starts light impact operation, and the return oil of the rock drill 7 returns to the oil tank through the oil return port T1. The heavy impact operation and the light impact operation of the rock drill are the same in principle, and only the pressure set by the proportional overflow valve 4 is a larger value. The pump 10 provides different flow according to different set pressure values of the proportional overflow valve 4 to meet the operation requirements of no-load, light impact and heavy impact. The pressure sensor 8 reflects the impact 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. An impact hydraulic system of a rock drill comprises an oil tank (9), an oil pump (10), an impact hydraulic valve (1) and the rock drill (7) which are sequentially connected in series, and is characterized in that a valve body of the impact hydraulic valve (1) is provided with a pressure oil port, an oil return port, a control oil port, a first detection oil port, a second detection oil port and a working oil port; the pressure oil port is communicated with an outlet of the oil pump; the oil return port is communicated with an oil tank (9); the working oil port is communicated with an impact oil port of the rock drill (7); the control oil port is communicated with a control oil port of the oil pump (10); the first detection oil port is communicated with a pressure sensor (8); when the outlet pressure of the pump is detected, the second detection oil port is communicated with the pressure gauge through the pressure measuring point, and the second detection oil port is in a blocking state at ordinary times.
2. The percussion hydraulic system of a rock drill according to claim 1, characterized in that: a proportional overflow valve (2), a first throttle hole (3), a second throttle hole (6), an electromagnetic directional valve (4) and a logic valve (5) are arranged in the impact hydraulic valve (1); the proportional overflow valve (2) and the first throttling hole (3) are connected in series to form a first branch; the electromagnetic reversing valve (4) and the second throttling hole (6) are connected in series to form a second branch; the logic valve (5), the first branch and the second branch are connected in parallel.
3. The percussion hydraulic system of a rock drilling machine according to claim 1 or 2, characterized in that: a pressure oil port of the impact hydraulic valve (1) is communicated with a pressure oil port of the oil pump (10) through a bolt; a working oil port of the impact hydraulic valve (1) is communicated with a pressure oil port of the rock drill (7) through a high-pressure oil pipe; a control oil port of the impact hydraulic valve (1) is communicated with a control oil port of the oil pump through a high-pressure oil pipe; a first detection oil port of the impact hydraulic valve (1) is communicated with a pressure sensor (8) through a high-pressure oil pipe; an oil suction port and an oil discharge port of the oil pump (10), an oil return port of the rock drill (7), an oil return port of the impact hydraulic valve (1) and the oil tank (9) are communicated through high-pressure oil pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922147985.1U CN211474559U (en) | 2019-12-04 | 2019-12-04 | Impact hydraulic system of rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922147985.1U CN211474559U (en) | 2019-12-04 | 2019-12-04 | Impact hydraulic system of rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211474559U true CN211474559U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922147985.1U Active CN211474559U (en) | 2019-12-04 | 2019-12-04 | Impact hydraulic system of rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211474559U (en) |
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2019
- 2019-12-04 CN CN201922147985.1U patent/CN211474559U/en active Active
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