CN203730455U - Buffering and oil topping up system of rotary drilling rig - Google Patents
Buffering and oil topping up system of rotary drilling rig Download PDFInfo
- Publication number
- CN203730455U CN203730455U CN201320852697.6U CN201320852697U CN203730455U CN 203730455 U CN203730455 U CN 203730455U CN 201320852697 U CN201320852697 U CN 201320852697U CN 203730455 U CN203730455 U CN 203730455U
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- pipeline
- hydraulic pump
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Abstract
The utility model discloses a buffering and oil toping up system of a rotary drilling rig, and belongs to the field of engineering machinery. The buffering and oil toping up system of the rotary drilling rig comprises an oil rank (8), an engine (12), a hydraulic pump (7), a main control valve (6) and a hydraulic motor (1) connected with a power head speed reducer, wherein the oil tank (8) and the engine are respectively connected with the hydraulic pump, and the hydraulic pump (7) supplies high pressure oil to the hydraulic motor through the main control valve. A buffering and oil topping up valve (3) is further included, a port connected with a pressure oil pipeline of the hydraulic motor is formed in one side of the buffering and oil topping up valve, a port communicated with a pipeline of the main control valve and a port connected with an oil return pipeline are formed in the other side of the buffering and oil topping up valve, the buffering and oil topping up valve comprises two check valves and two overflow valves, and the check valves and the overflow valves are connected in parallel between the pressure oil pipeline and the oil return pipeline. The buffering and oil topping up system of the rotary drilling rig has the advantages that hydraulic motor can be effectively prevented from being damaged due to the sudden increase of loads or frequent high pressure and low pressure impact, and the hydraulic motor can also be prevented from being damaged due to air suction.
Description
Technical field
The utility model relates to a kind of slow supply oil system, and particularly a kind of rotary digging drill power head slow supply oil system, belongs to engineering machinery field.
Background technique
In rotary drilling rig, unit head is as critical component, conventionally by 2 ~ 3 fluid motor-driven at present.Working principle is for driving oil hydraulic motor to work by oil hydraulic pump fuel feeding, after the double reduction of speed reducer and actuation gear, with the form of low-speed big, by bushing type live axle, passes to drilling rod.When getting rid of native operation, drilling rod drives drill bit frequently to switch forward and backward, causes power head motor often to bear two-way impacting with high pressure, causes moment to inhale empty simultaneously, easily damages motor.
Summary of the invention
The problem existing for above-mentioned prior art, the utility model provides a kind of rotary digging drill power head slow supply oil system, can effectively prevent that oil hydraulic motor is because of the damage that load increases suddenly or high low pressure impact causes frequently, also can prevent from damaging owing to inhaling the empty motor causing.
To achieve these goals, the technical solution adopted in the utility model is: a kind of rotary digging drill power head slow supply oil system, comprise fuel tank, motor, oil hydraulic pump, main control valve and the oil hydraulic motor being connected with unit head speed reducer, described fuel tank, motor is connected with oil hydraulic pump respectively, oil hydraulic pump provides high pressure oil by main control valve to oil hydraulic motor, also comprise slow supply oil valve, one side of slow supply oil valve is provided with the interface being connected with the pressure oil pipeline of oil hydraulic motor, opposite side is provided with the interface being connected with the pipeline of main control valve and the interface being connected with return line, described slow supply oil valve comprises two one-way valves and two relief valves, relief valve I and one-way valve I are connected in parallel between pressure oil pipeline I and return line I, relief valve II and one-way valve II are connected in parallel between pressure oil pipeline II and return line I.
Between described motor and oil hydraulic pump, be also connected with transfer case.
Described main control valve is load-sensitive valve.
Described oil hydraulic pump is open type variable displacement pump.
Compared with prior art, the beneficial effects of the utility model are: when pressure oil pipeline internal pressure is too high, will make the relief valve being communicated with it open, Absorbing hydraulic pulsation; When pressure oil pipeline internal pressure is too low, the oil of fuel tank refluxes as low pressure line repairing by one-way valve, prevents that emptying phenomenon from appearring in motor, and the oil of the normal pressure after oil hydraulic motor of flowing through is finally by main control valve, return tube flow back into fuel tank excessively.Slow supply oil system of the present utility model can effectively prevent that oil hydraulic motor is because of the damage that pipeline internal burden increases suddenly or high low pressure impact causes frequently, also can prevent from damaging owing to inhaling the empty motor causing.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present utility model.
In figure: 1, oil hydraulic motor, 2, pressure oil pipeline I, 3, slow supply oil valve, 4, relief valve I, 5, one-way valve I, 6, main control valve, 7, oil hydraulic pump, 8, fuel tank, 9, pressure oil pipeline II, 10, relief valve II, 11, one-way valve II, 12, motor, 13, return line I, 14, return line II.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of rotary digging drill power head slow supply oil system, comprise fuel tank 8, motor 12, oil hydraulic pump 7, main control valve 6 and the oil hydraulic motor 1 being connected with unit head speed reducer, described fuel tank 8, motor 12 is connected with oil hydraulic pump 7 respectively, oil hydraulic pump 7 provides high pressure oil to oil hydraulic motor 1 by main control valve 6, also comprise slow supply oil valve 3, one side of slow supply oil valve 3 is provided with the interface being connected with the pressure oil pipeline of oil hydraulic motor 1, opposite side is provided with the interface being connected with the pipeline of main control valve 6 and the interface being connected with return line, described slow supply oil valve 3 comprises two one-way valves and two relief valves, relief valve I 4 and one-way valve I 5 are connected in parallel between pressure oil pipeline I 2 and return line I 13, relief valve II 10 and one-way valve II 11 are connected in parallel between pressure oil pipeline II 9 and return line I 13.
As further improvement of the utility model, between described motor 12 and oil hydraulic pump 7, be also connected with transfer case, the power of motor 12 is distributed, for the normal work of oil hydraulic pump 7 provides power.
As further improvement of the utility model, described main control valve 6 is load-sensitive valve, and control performance is good, energy-efficient.
As further improvement of the utility model, described oil hydraulic pump 7 is open type variable displacement pump, can be directly installed on the flywheel casing of internal-combustion engine, easy for installation, long service life.
Use rotary digging drill power head slow supply oil system of the present utility model, by motor 12, directly or by motor 12 connection transfer cases drive oil hydraulic pump 7 work, oil hydraulic pump 7 is from fuel tank 8 oil suctions, by main control valve 6 output high pressure oils, by main control valve 6, commutated, when A mouth of pipe output high pressure oil, high pressure oil enters slow supply oil valve 3 through the C1 mouth of pipe, through the V1 mouth of pipe and pressure oil pipeline I 2, enter oil hydraulic motor 1, drive oil hydraulic motor 1 to be rotated in the forward, now oil pressure reduces, from oil hydraulic motor 1, flow out, the B mouth of pipe that low pressure oil is flowed through on slow supply oil valve 3 and main control valve 6 through pressure oil pipeline II 9 is again through return line II 14, be back in case.When the oily induced pressure of the A mouth of pipe of flowing through, pressure oil pipeline I 2 is too high or have compression shock, relief valve I 4 is opened, and Absorbing hydraulic pulsation plays buffer function; Low pressure oil is when through pressure oil pipeline II 9, the B mouth of pipe, if overpressure is too low, loop fills into motor low-pressure cavity by one-way valve II 11 through 13 oil suctions of return line I, prevents the empty damage of motor suction.
When B mouth of pipe output high pressure, high pressure oil enters slow supply oil valve 3 through C2 mouth, through V2 mouth and pressure oil pipeline II 9, enters oil hydraulic motor 1, drives oil hydraulic motor 1 counterrotating.Low pressure oil, through pressure oil pipeline I 2 flow through the A mouth of pipe, the T mouth of pipe of slow supply oil valve 3 and main control valve 6, is back in case.In pipe, oil is in flow process, if induced pressure is too high or while there is compression shock, relief valve II 10 is opened, Absorbing hydraulic pulsation plays buffer function; And when low pressure oil is flowed through pressure oil pipeline I 2, the A mouth of pipe, if hypotony fills into motor low-pressure cavity by one-way valve I 5 through 13 oil suctions of return line I in loop, prevent the empty damage of motor suction.One-way valve I 5 and one-way valve II 11 only can one-way conductions, do not affect normal work.
Claims (5)
1. a rotary digging drill power head slow supply oil system, comprise fuel tank (8), motor (12), oil hydraulic pump (7), main control valve (6) and the oil hydraulic motor (1) being connected with unit head speed reducer, described fuel tank (8), motor (12) is connected with oil hydraulic pump (7) respectively, oil hydraulic pump (7) provides high pressure oil to oil hydraulic motor (1) by main control valve (6), it is characterized in that: also comprise slow supply oil valve (3), one side of slow supply oil valve (3) is provided with the interface being connected with the pressure oil pipeline of oil hydraulic motor (1), opposite side is provided with the interface being connected with the pipeline of main control valve (6) and the interface being connected with return line, described slow supply oil valve (3) comprises two one-way valves and two relief valves, relief valve I (4) and one-way valve I (5) are connected in parallel between pressure oil pipeline I (2) and return line I (13), relief valve II (10) and one-way valve II (11) are connected in parallel between pressure oil pipeline II (9) and return line I (13).
2. a kind of rotary digging drill power head slow supply oil system according to claim 1, is characterized in that, between described motor (12) and oil hydraulic pump (7), is also connected with transfer case.
3. a kind of rotary digging drill power head slow supply oil system according to claim 1 and 2, is characterized in that, described main control valve (6) is load-sensitive valve.
4. a kind of rotary digging drill power head slow supply oil system according to claim 1 and 2, is characterized in that, described oil hydraulic pump (7) is open type variable displacement pump.
5. a kind of rotary digging drill power head slow supply oil system according to claim 3, is characterized in that, described oil hydraulic pump (7) is open type variable displacement pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852697.6U CN203730455U (en) | 2013-12-23 | 2013-12-23 | Buffering and oil topping up system of rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852697.6U CN203730455U (en) | 2013-12-23 | 2013-12-23 | Buffering and oil topping up system of rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730455U true CN203730455U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320852697.6U Expired - Lifetime CN203730455U (en) | 2013-12-23 | 2013-12-23 | Buffering and oil topping up system of rotary drilling rig |
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| CN (1) | CN203730455U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214148A (en) * | 2014-08-29 | 2014-12-17 | 徐州徐工基础工程机械有限公司 | Intelligent buffering and overflowing device |
| CN106545536A (en) * | 2015-09-21 | 2017-03-29 | 徐工集团工程机械股份有限公司 | Slow supply oil valve, slow supply oil system and deep drilling rig |
| CN107558529A (en) * | 2017-10-26 | 2018-01-09 | 付文博 | A kind of excavator rotary system based on motor driving two-way quantitative pump |
| CN108087362A (en) * | 2016-11-22 | 2018-05-29 | 丹佛斯动力系统有限责任两合公司 | The method of open hydraulic fluid flow circuits equipment and control hydraulic circuit |
| CN110173483A (en) * | 2019-06-28 | 2019-08-27 | 北京三一智造科技有限公司 | Hydraulic system and rotary drilling rig |
| CN111649023A (en) * | 2019-09-11 | 2020-09-11 | 中煤科工集团西安研究院有限公司 | Buffering oil supplementing system and method for electro-hydraulic double-control motor driving rotation system |
| CN113833701A (en) * | 2021-09-07 | 2021-12-24 | 徐州徐工挖掘机械有限公司 | Hydraulic system of rotary machine |
-
2013
- 2013-12-23 CN CN201320852697.6U patent/CN203730455U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214148A (en) * | 2014-08-29 | 2014-12-17 | 徐州徐工基础工程机械有限公司 | Intelligent buffering and overflowing device |
| CN106545536A (en) * | 2015-09-21 | 2017-03-29 | 徐工集团工程机械股份有限公司 | Slow supply oil valve, slow supply oil system and deep drilling rig |
| CN108087362A (en) * | 2016-11-22 | 2018-05-29 | 丹佛斯动力系统有限责任两合公司 | The method of open hydraulic fluid flow circuits equipment and control hydraulic circuit |
| US11054027B2 (en) | 2016-11-22 | 2021-07-06 | Danfoss Power Solutions G.m.b.H & Co. OHG | Open hydraulic fluid flow circuit arrangement and method of controlling the hydraulic circuit |
| CN107558529A (en) * | 2017-10-26 | 2018-01-09 | 付文博 | A kind of excavator rotary system based on motor driving two-way quantitative pump |
| CN110173483A (en) * | 2019-06-28 | 2019-08-27 | 北京三一智造科技有限公司 | Hydraulic system and rotary drilling rig |
| CN110173483B (en) * | 2019-06-28 | 2024-01-23 | 北京三一智造科技有限公司 | Hydraulic system and rotary drilling rig |
| CN111649023A (en) * | 2019-09-11 | 2020-09-11 | 中煤科工集团西安研究院有限公司 | Buffering oil supplementing system and method for electro-hydraulic double-control motor driving rotation system |
| CN111649023B (en) * | 2019-09-11 | 2022-04-15 | 中煤科工集团西安研究院有限公司 | Buffering oil supplementing system and method for electro-hydraulic double-control motor driving rotation system |
| CN113833701A (en) * | 2021-09-07 | 2021-12-24 | 徐州徐工挖掘机械有限公司 | Hydraulic system of rotary machine |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |