CN205388056U - Rock drilling machine's self -adaptation valves - Google Patents
Rock drilling machine's self -adaptation valves Download PDFInfo
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- CN205388056U CN205388056U CN201521024829.1U CN201521024829U CN205388056U CN 205388056 U CN205388056 U CN 205388056U CN 201521024829 U CN201521024829 U CN 201521024829U CN 205388056 U CN205388056 U CN 205388056U
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Abstract
The utility model discloses a rock drilling machine's self -adaptation valves, including first sequence valve, first pilot operated directional control valve, parts such as shuttle valve, first sequence valve oil inlet communicates with the rotatory pressure signal hydraulic fluid port of valves, the oil inlet of first pilot operated directional control valve and the feed pressure hydraulic fluid port of valves intercommunication, two actuator port of first pilot operated directional control valve respectively with the propulsion hydraulic fluid port of valves with the hydraulic fluid port intercommunication lifts, the oil inlet of second pilot operated directional control valve and the propulsion guide hydraulic fluid port of valves intercommunication, its oil -out communicates with the liquid accuse mouth of first pilot operated directional control valve, the liquid of this second pilot operated directional control valve accuse mouthful with the oil -out intercommunication of first sequence valve, the first oil inlet of shuttle valve and the oil -out of first sequence valve intercommunication, its second oil inlet communicates with the guide's hydraulic fluid port that lifts of this valves, the oil -out of shuttle valve and another liquid accuse mouthful intercommunication of first pilot operated directional control valve. This valves simple structure, the reliability is high, has both protected rock drill and drilling tool, has improved perforating efficiency again.
Description
Technical field
This utility model relates to engineering machinery field, is specially the self adaptation valve group of a kind of rock drilling machine.
Background technology
Hydraulic open-air rock drilling machine is the borehole engineering equipment used for pledge excavation, exploitation of stone etc..Due to the wide variety of rock, strata condition is complicated, causes that when boring the rotational resistance suffered by drill bit may increase suddenly card.If rock drilling system can not process the drill bit of burst in time by card situation, will result in rotation motor and exceed the scope of can bear, cause the drilling tool cards such as the related drilling rod of drill bit, adapter sleeve so that user bears bigger economic loss, and have a strong impact on pore-forming efficiency.
Initial down-hole percussion drill all adopts Pneumatic rotary motor, and moment of torsion is little, it is impossible to effectively broken rock, drilling speed is low, does not possess anti-sticking function completely, is eliminated now.The down-the-hole drill and the top hammer formula rock drilling machine that developed on domestic market later have all used the hydraulic motor of high pulling torque instead to implement spinfunction.Wherein, some anti-sticking systems are realized by complicated guide's feedback system, or design complexity, and response speed is relatively slow, and anti-sticking effect is bad, or then owing to response upward strain speed is too fast, return is relatively slow, has a strong impact on pore-forming effect.Some employing microcomputerized control, although response speed is fast, but reliability is poor, and under harsh site environment, circuit and parts easily go wrong, if can not change by on-call maintenance, can cause heavy losses to user.
Summary of the invention
The purpose of this utility model is in that to provide the self adaptation valve group of a kind of rock drilling machine, and its simple in construction, reliability are high, it is possible to be effectively improved pore-forming efficiency.
The self adaptation valve group of rock drilling machine described in the utility model, including: the first sequence valve, its oil-in connects with the rotation feed signal hydraulic fluid port of this valve group, when the pressure of described rotation feed signal hydraulic fluid port is more than the setting pressure of the first sequence valve, the first sequence valve commutation makes its oil-in and oil-out conducting；First pilot operated directional control valve, its oil-in connects with the feed pressure hydraulic fluid port of this valve group, and its oil return opening connects with the oil return opening of valve group, two actuator ports of this first pilot operated directional control valve respectively with the propelling hydraulic fluid port of valve group and lift up hydraulic fluid port and connect；Second pilot operated directional control valve, its oil-in connects with propelling guide's hydraulic fluid port of valve group, and a hydraulic control mouth connection of its oil-out and the first pilot operated directional control valve, the hydraulic control mouth of this second pilot operated directional control valve connects with the oil-out of described first sequence valve；Shuttle valve, the oil-out connection of its first oil-in and the first sequence valve, its second oil-in connects with the guide's hydraulic fluid port that lifts up of this valve group, and the oil-out of described shuttle valve and another hydraulic control mouth of the first pilot operated directional control valve connect.
Preferably, also include the second sequence valve, its oil-in connects with rotation feed signal hydraulic fluid port, its oil-out connects with the first oil-in of shuttle valve, the setting pressure of described second sequence valve is more than the first sequence valve, when the pressure of described rotation feed signal hydraulic fluid port is more than the setting pressure of the second sequence valve, the second sequence valve commutation makes its oil-in and oil-out conducting.
Preferably, also including manual switch valve, the pressure oil of described rotation feed signal hydraulic fluid port flows into valve group parts after this manual switch valve.
Preferably, also including the first overflow valve, the oil-in of this first overflow valve connects with the feed pressure hydraulic fluid port of valve group, and its oil-out connects with the oil return opening of valve group.
Preferably, also include the 3rd pilot operated directional control valve and the second overflow valve, the described oil-in of the 3rd pilot operated directional control valve connects with the surge hydraulic fluid port of valve group, the oil-in connection of its oil-out and the second overflow valve, the hydraulic control mouth of the 3rd pilot operated directional control valve is connected with the propelling hydraulic fluid port of valve group, and the oil-out of described second overflow valve connects with the oil return opening of valve group.
Preferably, also including the 3rd sequence valve, its oil-in connects with the propelling hydraulic fluid port of valve group, and its oil-out connects with the hydraulic control mouth of described 3rd pilot operated directional control valve, when the pressure of described propelling hydraulic fluid port is more than the setting pressure of the 3rd sequence valve, the 3rd sequence valve commutation makes its oil-in and oil-out conducting.
Preferably, the oil circuit between the oil-out of described first sequence valve and the first oil-in of shuttle valve is provided with damping hole.
Preferably, after the oil return opening of described second sequence valve, it is provided with damping hole.
Preferably, also including the 3rd overflow valve, the oil-in of the 3rd overflow valve connects with the surge hydraulic fluid port of valve group, and its oil-out connects with the oil return opening of valve group.
Preferably, also including the 4th overflow valve, the oil-in of the 4th overflow valve connects with the propelling hydraulic fluid port of valve group, and its oil-out connects with the oil return opening of valve group.
This utility model reduces surge while anti-sticking pricker automatically controls realizing, and protects rock drill and drilling tool, effectively reduces the use cost of user.And arranged by two-stage sequence valve and corresponding damping hole, improve and lift up response control characteristic, decrease to lift up and be reset to the time reworked, improve drilling efficiency.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, and following example are only used for explaining this utility model, are not intended that the restriction to this utility model protection domain.
The self adaptation valve group of rock drilling machine as shown in Figure 1, wherein, the oil-in of described manual switch valve 1 connects with rotation feed signal hydraulic fluid port K, and pressure oil is entered by the rotation feed signal hydraulic fluid port K of valve group, flows into the first sequence valve 2 and the second sequence valve 3 of valve group after this manual switch valve 1 again.Anti-sticking function of the present utility model can be passed through this manual switch valve 1 and close.After closedown, the maximum constraint of rotational pressure is the maximum pressure of default.
The described oil-in of the first sequence valve 2 connects with the oil-out of manual switch valve 1, its oil return opening connects with the drain tap L of valve group, oil-out one tunnel of this first sequence valve 2 connects with the hydraulic control mouth of the second pilot operated directional control valve 11, and another road connects through the first filter 5 first oil-in with shuttle valve 4 after the first damping hole 6.When the pressure of described rotation feed signal hydraulic fluid port K is more than the setting pressure of the first sequence valve 2, pilot pressure oil acts on its hydraulic control end, drives the first sequence valve commutation to make its oil-in and oil-out conducting.
The described oil-in of the second sequence valve 3 connects with the oil-out of manual switch valve 1, its oil-out first oil-in with shuttle valve 4 after the second filter 7 connects, and the oil return opening of this second sequence valve connects through the second damping hole 8 drain tap L with valve group after the 3rd damping hole 9 successively.The setting pressure of described second sequence valve 3 is more than the first sequence valve 2, when the pressure of described rotation feed signal hydraulic fluid port is more than the setting pressure of the second sequence valve, pilot pressure oil acts on its hydraulic control end, drives the second sequence valve commutation to make its oil-in and oil-out conducting.
Second oil-in of described shuttle valve 4 connects with the guide hydraulic fluid port X2 that lifts up of valve group, and the hydraulic control mouth that lifts up of its oil-out and the first pilot operated directional control valve 10 connects.
The oil-in of described second pilot operated directional control valve 11 connects with the propelling guide hydraulic fluid port X1 of valve group, and its oil return opening connects with the drain tap L of valve group, the propelling hydraulic control mouth connection of its oil-out and the first pilot operated directional control valve 10.
The oil-in of described first pilot operated directional control valve 10 connects with the feed pressure hydraulic fluid port P of this valve group, and its oil return opening connects with the oil return inlet T of valve group, two actuator ports of this first pilot operated directional control valve respectively with the propelling hydraulic fluid port A1 of valve group and lift up hydraulic fluid port B1 corresponding connection.Pressure oil is by the propelling hydraulic fluid port A1 of described valve group or lifts up hydraulic fluid port B1 and draws, for the feed motion (namely advance downwardly and upwards lift up action) of rock drill.
The oil-in of described first overflow valve 12 connects with the feed pressure hydraulic fluid port P of valve group, and its oil-out connects with the oil return inlet T of valve group.
The oil-in of described 4th overflow valve 14 connects with the propelling hydraulic fluid port A1 of valve group, and its oil-out connects with the oil return inlet T of valve group.
The oil-in of described 3rd sequence valve 13 connects with the propelling hydraulic fluid port A1 of valve group, and its oil-out connects with the hydraulic control mouth of described 3rd pilot operated directional control valve 15, and its oil return opening connects with the drain tap L of valve group.When the pressure of described propelling hydraulic fluid port A1 is more than the setting pressure of the 3rd sequence valve, pilot pressure oil acts on its hydraulic control end, drives the 3rd sequence valve commutation to make its oil-in and oil-out conducting.
The oil-in of described 3rd pilot operated directional control valve 15 connects with the surge hydraulic fluid port C of valve group, and the oil-in connection of its oil-out and the second overflow valve 16, the described oil-out of the second overflow valve 16 connects with the oil return inlet T of valve group.
The oil-in of described 3rd overflow valve 17 connects with the surge hydraulic fluid port C of valve group, and its oil-out connects with the oil return inlet T of valve group.
The operation principle of above-mentioned valve group is:
When normal rock drilling, pressure oil is entered by feed pressure hydraulic fluid port P.Now, advancing pilot signal oil by advancing guide hydraulic fluid port X1 to enter, promote the first pilot operated directional control valve 10 to commutate through the second pilot operated directional control valve 11, pressure oil is by advancing hydraulic fluid port A1 extraction to enter propulsion motor, from lifting up hydraulic fluid port B1 oil return.Meanwhile, the 3rd sequence valve 13 controlled by propelling pressure replaces, and pressure oil acts on the hydraulic control mouth of the 3rd pilot operated directional control valve 15,3rd pilot operated directional control valve commutation, making its oil inlet and outlet block, now surge is set up by the 3rd overflow valve 17, thus realizing the elevated pressures of surge hydraulic fluid port C.
When drilling tool runs into a degree of jam, the forward rotation pressure of rotation feed signal hydraulic fluid port K is more than the first sequence valve 2 and less than the setting pressure of the second sequence valve 3, the oil inlet and outlet conducting of described first sequence valve, pressure oil arrives the hydraulic control end of the second pilot operated directional control valve 11, promote the second pilot operated directional control valve commutation, making its oil-in end, the propelling hydraulic control end of the first pilot operated directional control valve 10 is through the logical valve group drain tap L of the second pilot operated directional control valve.At this moment the first pilot operated directional control valve 10 returns to middle position, and feeding rock drilling action stops, and owing to now spinning movement is carrying out always, but is pressed in the power vanishing on rock so that rotational resistance diminishes.And owing to feeding stops causing that propelling pressure is reduced to zero; therefore by the 3rd sequence valve 13 return that propelling pressure controls; make the drain tap L of the logical valve group of hydraulic control end of the 3rd pilot operated directional control valve 15; 3rd pilot operated directional control valve 15 turns on; the second overflow valve 16 pressure release is connected from the surge hydraulic fluid port C surge oil come; thus realizing relatively low surge, protect rock drill and drilling tool.If rotational pressure now drops below the setting value of the first sequence valve 2, this first sequence valve return, then restart pressure down and advance rock drilling.Additionally, the first sequence valve action is made at rotational pressure described above, while pressing action stops, another road pressure oil that first sequence valve 2 is drawn lifts up hydraulic control end through what first filter the 5, first damping hole 6 and shuttle valve 4 guided to the first pilot operated directional control valve 10, and through the first damping hole hydraulic oil guide to the first pilot operated directional control valve lift up hydraulic control end while, also by the oil return opening of the second sequence valve 3, second and the 3rd damping hole guide to drain tap L slow down so that cause the rate of pressure rise lifting up hydraulic control end.Visible, under the effect of damping hole, it is slower that rock drill lifts up corresponding speed.In lifting up process, rotational pressure is reduced further, when lower than the setting value of the first sequence valve 2, then presses rock drilling under restarting, recovers normal rock drilling state.Therefore owing to rock drill lifts up less or does not lift up, eliminate the need for card pricker dangerous, quickly recover to normal rock drilling state again, improve rock penetration performance.
When drilling tool runs into the situation of card especially, rotational pressure raises suddenly, setting value higher than the first sequence valve 2 and the second sequence valve 3, now the first and second sequence valves action simultaneously, make the propelling hydraulic control end pressure release of the first pilot operated directional control valve 10 on the one hand, the oil inlet and outlet conducting of described second sequence valve 3 on the other hand, hydraulic oil lifts up on hydraulic control end through what the second sequence valve and shuttle valve acted on rapidly the first pilot operated directional control valve 10, make the first pilot operated directional control valve commutation, when pilot control is still pressure rock drilling down, fast automatic lift up, so that rotational pressure declines rapidly.In like manner, when lifting up owing to the pressure of propelling oil circuit is zero, making impact oil communication the second overflow valve 16, rock drill works with relatively low surge, plays a protective role.
Claims (9)
1. the self adaptation valve group of a rock drilling machine, it is characterised in that including:
First sequence valve, its oil-in connects with the rotation feed signal hydraulic fluid port of this valve group, and when the pressure of described rotation feed signal hydraulic fluid port is more than the setting pressure of the first sequence valve, the first sequence valve commutation makes its oil-in and oil-out conducting；
First pilot operated directional control valve, its oil-in connects with the feed pressure hydraulic fluid port of this valve group, and its oil return opening connects with the oil return opening of valve group, two actuator ports of this first pilot operated directional control valve respectively with the propelling hydraulic fluid port of valve group and lift up hydraulic fluid port and connect；
Second pilot operated directional control valve, its oil-in connects with propelling guide's hydraulic fluid port of valve group, and a hydraulic control mouth connection of its oil-out and the first pilot operated directional control valve, the hydraulic control mouth of this second pilot operated directional control valve connects with the oil-out of described first sequence valve；
Shuttle valve, the oil-out connection of its first oil-in and the first sequence valve, its second oil-in connects with the guide's hydraulic fluid port that lifts up of this valve group, and the oil-out of described shuttle valve and another hydraulic control mouth of the first pilot operated directional control valve connect；
Second sequence valve, its oil-in connects with rotation feed signal hydraulic fluid port, its oil-out connects with the first oil-in of shuttle valve, the setting pressure of described second sequence valve is more than the first sequence valve, when the pressure of described rotation feed signal hydraulic fluid port is more than the setting pressure of the second sequence valve, the second sequence valve commutation makes its oil-in and oil-out conducting.
2. the self adaptation valve group of rock drilling machine according to claim 1, it is characterised in that: including manual switch valve, the pressure oil of described rotation feed signal hydraulic fluid port flows into valve group parts after this manual switch valve.
3. the self adaptation valve group of rock drilling machine according to claim 1, it is characterised in that: including the first overflow valve, the oil-in of this first overflow valve connects with the feed pressure hydraulic fluid port of valve group, and its oil-out connects with the oil return opening of valve group.
4. the self adaptation valve group of rock drilling machine according to claim 1, it is characterised in that: include the 3rd pilot operated directional control valve and the second overflow valve,
The described oil-in of the 3rd pilot operated directional control valve connects with the surge hydraulic fluid port of valve group, the oil-in connection of its oil-out and the second overflow valve, the hydraulic control mouth of the 3rd pilot operated directional control valve is connected with the propelling hydraulic fluid port of valve group, and the oil-out of described second overflow valve connects with the oil return opening of valve group.
5. the self adaptation valve group of rock drilling machine according to claim 4, it is characterized in that: include the 3rd sequence valve, its oil-in connects with the propelling hydraulic fluid port of valve group, its oil-out connects with the hydraulic control mouth of described 3rd pilot operated directional control valve, when the pressure of described propelling hydraulic fluid port is more than the setting pressure of the 3rd sequence valve, the 3rd sequence valve commutation makes its oil-in and oil-out conducting.
6. the self adaptation valve group of rock drilling machine according to claim 1, it is characterised in that: the oil circuit between the oil-out of described first sequence valve and the first oil-in of shuttle valve is provided with damping hole.
7. the self adaptation valve group of rock drilling machine according to claim 1, it is characterised in that: after the oil return opening of described second sequence valve, it is provided with damping hole.
8. the self adaptation valve group of rock drilling machine according to claim 1, it is characterised in that: including the 3rd overflow valve, the oil-in of the 3rd overflow valve connects with the surge hydraulic fluid port of valve group, and its oil-out connects with the oil return opening of valve group.
9. the self adaptation valve group of rock drilling machine according to claim 1, it is characterised in that: including the 4th overflow valve, the oil-in of the 4th overflow valve connects with the propelling hydraulic fluid port of valve group, and its oil-out connects with the oil return opening of valve group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024829.1U CN205388056U (en) | 2015-12-11 | 2015-12-11 | Rock drilling machine's self -adaptation valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024829.1U CN205388056U (en) | 2015-12-11 | 2015-12-11 | Rock drilling machine's self -adaptation valves |
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| Publication Number | Publication Date |
|---|---|
| CN205388056U true CN205388056U (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521024829.1U Withdrawn - After Issue CN205388056U (en) | 2015-12-11 | 2015-12-11 | Rock drilling machine's self -adaptation valves |
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| CN (1) | CN205388056U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332967A (en) * | 2015-12-11 | 2016-02-17 | 重庆纳川山隅重工设备有限公司 | Self-adaptive valve bank for rock drilling machine |
| CN108194444A (en) * | 2018-03-20 | 2018-06-22 | 马鞍山唐拓凿岩机械有限公司 | The blank-run prevention hydraulic system and its control method of a kind of top hammer drilling machine |
| CN110206776A (en) * | 2019-07-16 | 2019-09-06 | 郑州宇通重工有限公司 | A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group |
| CN110778557A (en) * | 2019-11-14 | 2020-02-11 | 锦州力特液压科技有限公司 | Multi-way reversing valve of multifunctional tunnel drilling machine |
| CN111980978A (en) * | 2020-08-14 | 2020-11-24 | 徐州徐工基础工程机械有限公司 | Torque control hydraulic system based on push-pull speed of power head |
| CN112832736A (en) * | 2019-11-23 | 2021-05-25 | 山东科技大学 | Automatic anti-sticking's hydraulic pressure colliery rig |
-
2015
- 2015-12-11 CN CN201521024829.1U patent/CN205388056U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332967A (en) * | 2015-12-11 | 2016-02-17 | 重庆纳川山隅重工设备有限公司 | Self-adaptive valve bank for rock drilling machine |
| CN108194444A (en) * | 2018-03-20 | 2018-06-22 | 马鞍山唐拓凿岩机械有限公司 | The blank-run prevention hydraulic system and its control method of a kind of top hammer drilling machine |
| CN108194444B (en) * | 2018-03-20 | 2024-02-13 | 马鞍山唐拓凿岩机械有限公司 | Anti-idle-drilling hydraulic system of top hammer drilling machine and control method thereof |
| CN110206776A (en) * | 2019-07-16 | 2019-09-06 | 郑州宇通重工有限公司 | A kind of hydraulic pressure maintaining and self-unloading energy conservation valve group |
| CN110778557A (en) * | 2019-11-14 | 2020-02-11 | 锦州力特液压科技有限公司 | Multi-way reversing valve of multifunctional tunnel drilling machine |
| CN110778557B (en) * | 2019-11-14 | 2024-05-10 | 锦州力特液压科技有限公司 | Multi-way reversing valve of multifunctional tunnel drilling machine |
| CN112832736A (en) * | 2019-11-23 | 2021-05-25 | 山东科技大学 | Automatic anti-sticking's hydraulic pressure colliery rig |
| CN112832736B (en) * | 2019-11-23 | 2023-07-14 | 山东科技大学 | Automatic anti-sticking bores hydraulic coal mine drilling machine |
| CN111980978A (en) * | 2020-08-14 | 2020-11-24 | 徐州徐工基础工程机械有限公司 | Torque control hydraulic system based on push-pull speed of power head |
| CN111980978B (en) * | 2020-08-14 | 2023-04-11 | 徐州徐工基础工程机械有限公司 | Torque control hydraulic system based on push-pull speed of power head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160720 Effective date of abandoning: 20170524 |