CN205298111U - Hydraulic pressure rock drilling machine's rock drill spin control return circuit - Google Patents
Hydraulic pressure rock drilling machine's rock drill spin control return circuit Download PDFInfo
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- CN205298111U CN205298111U CN201521024853.5U CN201521024853U CN205298111U CN 205298111 U CN205298111 U CN 205298111U CN 201521024853 U CN201521024853 U CN 201521024853U CN 205298111 U CN205298111 U CN 205298111U
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- control valve
- valve group
- oil
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- 239000011435 rock Substances 0.000 title claims abstract description 36
- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 230000001276 controlling effect Effects 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model discloses a hydraulic pressure rock drilling machine's rock drill spin control return circuit, including hydraulic pump, rotary actuator and valve unit, its characterized in that: valve unit includes first pilot operated directional control valve, second pilot operated directional control valve, first overflow valve, second overflow valve and flow adjusting valve, the hydraulic pump communicates with this valve unit's P mouth, the oil inlet of first pilot operated directional control valve communicates with valve unit's P mouth intercommunication, its oil return opening and this valve unit's T mouth, and two actuator port of this first pilot operated directional control valve are continuous with this valve unit's A, B mouth respectively, and valve unit's A, B mouth pass through oil circuit and rotary actuator intercommunication, wherein, and valve unit's A mouth connection rotary actuator's forward rotation oil circuit, the oil inlet of first overflow valve and oil -out respectively with this valve unit's P mouth and T mouth intercommunication, the oil inlet of second pilot operated directional control valve and valve unit's P mouth intercommunication, its two actuator port communicate with the oil inlet of second overflow valve and flow adjusting valve respectively, the oil -out of second overflow valve and flow adjusting valve again respectively with this valve unit's T mouth intercommunication. This control circuit simple structure can satisfy various functional requirement.
Description
Technical field
This utility model relates to engineering machinery field, is specially the rock drill rotary control circuit of a kind of hydraulic rock drilling machine.
Background technology
The spinfunction of rock drill is one of of paramount importance function on whole hydraulic rock drilling machine, adopts the hydraulic motor of high pulling torque can overcome the rotational resistance in rock drilling process, improves pore-forming efficiency, reduces drilling tool loss. The function singleness of the Rotary Loop of the outdoor hydraulic rock drilling machine of current domestic various brands, it does not have relate to the function such as Spin Control and anti-sticking pricker. Some producer adopts pump control and valve control, function has been extended, but principle is excessively complicated, and element is various, costly, not easily maintains.
Summary of the invention
The purpose of this utility model is in that to provide the rock drill rotary control circuit of a kind of hydraulic rock drilling machine, its simple in construction, it is possible to meet various functional requirement.
The rock drill rotary control circuit of hydraulic rock drilling machine described in the utility model, including hydraulic pump, rotation motor and control valve group, described control valve group includes the first pilot operated directional control valve, second pilot operated directional control valve, first overflow valve, second overflow valve and flow rate regulating valve, described hydraulic pump connects with the P mouth of this control valve group, the oil-in of described first pilot operated directional control valve connects with the P mouth controlling valve group, its oil return opening connects with the T mouth of this control valve group, two actuator ports of this first pilot operated directional control valve respectively with the A of this control valve group, B mouth is connected, control the A of valve group, B mouth is connected with rotation motor by oil circuit, wherein, control valve group A mouth connect rotation motor rotate forward oil circuit, the oil-in of described first overflow valve connects with the P mouth of this control valve group and T mouth respectively with oil-out, the oil-in of described second pilot operated directional control valve connects with the P mouth controlling valve group, its two actuator port connects with the oil-in of the second overflow valve and flow rate regulating valve respectively, described second overflow valve connects with the T mouth of this control valve group again respectively with the oil-out of flow rate regulating valve.
Preferably, the setting pressure of the second overflow valve is lower than the setting pressure of the first overflow valve.
Preferably, described control valve group also includes and controls the D mouth that valve group A mouth connects, and external complement hydraulic oil can be entered by controlling valve group D mouth, is used for realizing super at a high speed rotation.
Preferably, check valve is set at D mouth place.
Preferably, described control valve group also includes and controls the K mouth that valve group A mouth connects, and the K mouth of this control valve group is used for being connected to anti-sticking pricker and controls system.
Preferably, described control valve group also includes and controls the M mouth that valve group P mouth connects, and the M mouth of this control valve group is used for Bonding pressure table.
Preferably, described flow rate regulating valve is pressure compensation type flow rate regulating valve, is used for the rotary speed adjusting under various aperture and operating mode.
Preferably, described hydraulic pump is dosing pump.
This utility model has the advantage that
1, carrying out with the variable pump systems of existing complexity selecting compared with control, this control loop adopts Constant Pump System, and control principle is simple, it is simple to maintenance.
2, the Hydraulic Elements in this control loop are few, simple in construction, and reliability is high.
3, this control loop meets all rotation operating modes of hydraulic open-air rock drilling machine, multiple functional.
Accompanying drawing explanation
Fig. 1 is 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 rock drill rotary control circuit of hydraulic rock drilling machine as shown in Figure 1, including hydraulic pump 1, rotation motor 2 and control valve group.
Described control valve group includes the first pilot operated directional control valve the 3, second pilot operated directional control valve the 4, first overflow valve the 5, second overflow valve 6 and flow rate regulating valve 7. In the present embodiment, hydraulic pump 1 is quantitative gear pump, and flow rate regulating valve 7 is pressure compensation type flow rate regulating valve.
Described first pilot operated directional control valve 3 is three position four-way directional control valve, its oil-in connects with the P mouth controlling valve group, its oil return opening connects with the T mouth of this control valve group, two actuator ports of this first pilot operated directional control valve are connected with A, B mouth of this control valve group respectively, and two hydraulic control mouths of this first pilot operated directional control valve 3 connect with the X1 mouth controlling valve group and X2 mouth respectively.
A, B mouth of described control valve group is connected with rotation motor 2 by oil circuit, wherein, control valve group A mouth connection rotation motor 2 rotate forward oil circuit.
The oil-in of described first overflow valve 5 connects with the P mouth of this control valve group and T mouth respectively with oil-out.
Described second pilot operated directional control valve 4 is two-bit triplet reversal valve, its oil-in connects with the P mouth controlling valve group, its two actuator port connects with the oil-in of the second overflow valve 6 and flow rate regulating valve 7 respectively, and the hydraulic control mouth of this second pilot operated directional control valve 4 connects with the X3 mouth controlling valve group. Described second overflow valve 6 connects with the T mouth of this control valve group again respectively with the oil-out of flow rate regulating valve 7.
The setting pressure of the second overflow valve 6 is lower than the setting pressure of the first overflow valve 5.
The D mouth of described control valve group connects with A mouth, and arranges check valve 8, makes hydraulic oil can only be controlled valve group by unidirectional entrance of D mouth. When needs carry out super rotation at a high speed, fill into from the hydraulic oil of D mouth entrance and rotate forward oil circuit, thus realizing holing higher than the drilling speed of normal drill speed.
The K mouth of described control valve group obtains pressure signal oil from rotating forward oil circuit, is external to anti-sticking pricker and controls system, carries out the anti-card control of rock drilling.
The M mouth of described control valve group connects with controlling valve group P mouth, for external Pressure gauge.
Entering this control valve group from hydraulic pump 1 hydraulic oil out from controlling valve group P mouth, the flow of this hydraulic pump is for changing rotation motor necessary flow under bar state. When being in normal drill state, the X3 mouth controlling valve group does not control oil entrance, and the oil-in conducting of described flow rate regulating valve 7, the oil-in of the second overflow valve 6 blocks. Pressure oil enters the first pilot operated directional control valve 3 on the one hand, enters flow rate regulating valve 7 through the second pilot operated directional control valve 4 on the one hand. Described flow rate regulating valve draining adjust rotary current meanwhile, it is capable to ensure Rotary Loop pressure stability, now Rotary Loop maximum pressure limit performed by the first overflow valve 5.
When be in change bar state time, control valve group X3 mouth and come oily, the second pilot operated directional control valve 4 is promoted to commutate, the oil-in of described flow rate regulating valve blocks, the oil-in conducting of the second overflow valve, at this moment changing bar rotary current equal to pumping into the whole flows controlling valve group, now commutation states rotational pressure is converted to and is limited by the second overflow valve 6.
Claims (8)
1. the rock drill rotary control circuit of a hydraulic rock drilling machine, including hydraulic pump, rotation motor and control valve group, it is characterized in that: described control valve group includes the first pilot operated directional control valve, second pilot operated directional control valve, first overflow valve, second overflow valve and flow rate regulating valve, described hydraulic pump connects with the P mouth of this control valve group, the oil-in of described first pilot operated directional control valve connects with the P mouth controlling valve group, its oil return opening connects with the T mouth of this control valve group, two actuator ports of this first pilot operated directional control valve respectively with the A of this control valve group, B mouth is connected, control the A of valve group, B mouth is connected with rotation motor by oil circuit, wherein, control valve group A mouth connect rotation motor rotate forward oil circuit, the oil-in of described first overflow valve connects with the P mouth of this control valve group and T mouth respectively with oil-out, the oil-in of described second pilot operated directional control valve connects with the P mouth controlling valve group, its two actuator port connects with the oil-in of the second overflow valve and flow rate regulating valve respectively, described second overflow valve connects with the T mouth of this control valve group again respectively with the oil-out of flow rate regulating valve.
2. the rock drill rotary control circuit of hydraulic rock drilling machine according to claim 1, it is characterised in that: the setting pressure of the second overflow valve is lower than the setting pressure of the first overflow valve.
3. the rock drill rotary control circuit of hydraulic rock drilling machine according to claim 1 and 2, it is characterised in that: described control valve group also includes and controls the D mouth that valve group A mouth connects, and external complement hydraulic oil can be entered by controlling valve group D mouth.
4. the rock drill rotary control circuit of hydraulic rock drilling machine according to claim 3, it is characterised in that: at D mouth place, check valve is set.
5. the rock drill rotary control circuit of hydraulic rock drilling machine according to claim 1 and 2, it is characterised in that: described control valve group also includes and controls the K mouth that valve group A mouth connects, and the K mouth of this control valve group is used for being connected to anti-sticking pricker and controls system.
6. the rock drill rotary control circuit of hydraulic rock drilling machine according to claim 1 and 2, it is characterised in that: described control valve group also includes and controls the M mouth that valve group P mouth connects, and the M mouth of this control valve group is used for Bonding pressure table.
7. the rock drill rotary control circuit of hydraulic rock drilling machine according to claim 1 and 2, it is characterised in that: described flow rate regulating valve is pressure compensation type flow rate regulating valve.
8. the rock drill rotary control circuit of hydraulic rock drilling machine according to claim 1 and 2, it is characterised in that: described hydraulic pump is dosing pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024853.5U CN205298111U (en) | 2015-12-11 | 2015-12-11 | Hydraulic pressure rock drilling machine's rock drill spin control return circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521024853.5U CN205298111U (en) | 2015-12-11 | 2015-12-11 | Hydraulic pressure rock drilling machine's rock drill spin control return circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298111U true CN205298111U (en) | 2016-06-08 |
Family
ID=56431409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521024853.5U Active CN205298111U (en) | 2015-12-11 | 2015-12-11 | Hydraulic pressure rock drilling machine's rock drill spin control return circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298111U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438532A (en) * | 2016-11-12 | 2017-02-22 | 湘潭大学 | Electric proportional control type rock drill rock drilling efficiency automatic control system |
| CN108612516A (en) * | 2018-06-07 | 2018-10-02 | 中国铁建重工集团有限公司 | A kind of rock drilling machine and its hydraulic control valve group |
| CN113124006A (en) * | 2021-04-19 | 2021-07-16 | 中国铁建重工集团股份有限公司 | Hydraulic system for continuously adjusting rock drilling power |
-
2015
- 2015-12-11 CN CN201521024853.5U patent/CN205298111U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438532A (en) * | 2016-11-12 | 2017-02-22 | 湘潭大学 | Electric proportional control type rock drill rock drilling efficiency automatic control system |
| CN106438532B (en) * | 2016-11-12 | 2018-01-09 | 湘潭大学 | A kind of electric proportional control formula rock drill rock penetration performance automatic control system |
| CN108612516A (en) * | 2018-06-07 | 2018-10-02 | 中国铁建重工集团有限公司 | A kind of rock drilling machine and its hydraulic control valve group |
| CN108612516B (en) * | 2018-06-07 | 2024-02-20 | 中国铁建重工集团股份有限公司 | Rock drilling machine and hydraulic control valve group thereof |
| CN113124006A (en) * | 2021-04-19 | 2021-07-16 | 中国铁建重工集团股份有限公司 | Hydraulic system for continuously adjusting rock drilling power |
| CN113124006B (en) * | 2021-04-19 | 2023-04-07 | 中国铁建重工集团股份有限公司 | Hydraulic system for continuously adjusting rock drilling power |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |