CN205478605U - Rock drill hydraulic system - Google Patents
Rock drill hydraulic system Download PDFInfo
- Publication number
- CN205478605U CN205478605U CN201620317053.0U CN201620317053U CN205478605U CN 205478605 U CN205478605 U CN 205478605U CN 201620317053 U CN201620317053 U CN 201620317053U CN 205478605 U CN205478605 U CN 205478605U
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- Prior art keywords
- oil pipe
- cylinder
- impact
- valve
- hydraulic
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- Expired - Fee Related
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Abstract
The utility model discloses a rock drill hydraulic system, including pressure oil pipe, oil pipe returns, the overflow valve of setting on pressure oil pipe, hydraulic motor system and impact hydro -cylinder system, strike the hydro -cylinder system including connecting tribit four -way reversing valve, strike the hydro -cylinder, flow control valve is with play oil pipe and advance oil pipe, it is provided with the hydraulically controlled check valve on the oil pipe to strike advancing between hydro -cylinder and the flow control valve, the no pole intracavity that strikes the hydro -cylinder is provided with the backpressure oilhole, the backpressure oilhole passes through liquid accuse oil pipe and connects on the hydraulically controlled check valve, the backpressure oilhole is connected with piston packaging when the piston resets, the utility model discloses a not having the pole chamber and being provided with the backpressure hydraulic fluid port assaulting the hydro -cylinder, the backpressure hydraulic fluid port passes through liquid accuse oil pipe to be connected on the liquid accuse passageway of hydraulically controlled check valve, does not have the pole chamber through hydraulically controlled check valve control hydro -cylinder and advances opening of oil pipe, not only can make the purpose of assaulting pole reciprocating motion, can play the backpressure effect in addition, the impact of reducing impact pole.
Description
Technical field
This utility model belongs to the technical field by fluid pressure, is specifically related to a kind of rock drill hydraulic system.
Background technology
Hydraulic rock machine hydraulic system is mounted in excavator, development machine or is arranged on the special equipment of oil sources, is used for carrying out the brill equipment of bore operation on Ore, rock etc., high rigidity, fragile material；A kind of hydraulic gate rock drill as disclosed in Chinese patent 201510847547.X description, its hydraulic work system principle for the high pressure liquid force feed that provides using oil sources as power, in fluid entrance, after cylinder body, flow control valve controls commutation, in upper cylinder body nitrogen chamber, nitrogen provides auxiliary power for impact bar, makes impact bar move back and forth；The impact energy of impact bar passes to bit shank, drilling rod；Hydraulic oil enters hydraulic motor, fluid motor-driven gearbox gear drive output shaft to rotate, and output shaft drives bit shank, and drilling rod rotates, thus realizes bore operation.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of rock drill hydraulic system, this rock drill hydraulic system is by being provided with back pressure hydraulic fluid port at impact oil cylinder rodless cavity, back pressure hydraulic fluid port is connected on the hydraulic control passage of hydraulic control one-way valve by hydraulic control oil pipe, the unlatching of oil cylinder rodless cavity oil inlet pipe is controlled by hydraulic control one-way valve, it is possible not only to make the reciprocating purpose of impact bar, and back pressure effect can be played, reduce the impact of impact bar.
In order to solve above-mentioned technical problem, this utility model one rock drill hydraulic system, including pressure oil pipe, oil return pipe, the overflow valve being arranged on pressure oil pipe, hydraulic motor system and impact cylinder system, described impact cylinder system includes the three position four-way directional control valve being connected on pressure oil pipe and oil return pipe, impact oil cylinder, it is arranged on the flow control valve on impact oil cylinder and is connected between three position four-way directional control valve and flow control valve and the flowline that connects with the impact rod chamber of oil cylinder and rodless cavity respectively and oil inlet pipe, it is provided with hydraulic control one-way valve on oil inlet pipe between described impact oil cylinder and flow control valve, it is provided with back pressure oilhole in the rodless cavity of described impact oil cylinder, described back pressure oilhole is connected on hydraulic control one-way valve by hydraulic control oil pipe, described back pressure oilhole is connected with piston seal when piston reset.
Further, the front end described pressure oil pipe being positioned at three position four-way directional control valve is provided with air relief valve.
Further, described hydraulic motor system includes reversal valve, flow speed control valve and the hydraulic motor being connected in turn on pressure oil pipe and oil return pipe.
Effective effect of the present utility model is:
1, this utility model rock drill hydraulic system is by being provided with back pressure hydraulic fluid port at impact oil cylinder rodless cavity, back pressure hydraulic fluid port is connected on the hydraulic control passage of hydraulic control one-way valve by hydraulic control oil pipe, the unlatching of oil cylinder rodless cavity oil inlet pipe is controlled by hydraulic control one-way valve, it is possible not only to make the reciprocating purpose of impact bar, and back pressure effect can be played, reduce the impact of impact bar；
2, this utility model rock drill hydraulic system is avoided using nitrogen chamber and sealing structure, reduces volume and the cost of rock drill, extends the service life of rock drill, reach the purpose of all-hydraulic control。
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this utility model rock drill hydraulic system.
Reference: 1-pressure oil pipe；2-oil return pipe；3-overflow valve；4-fuel tank；5-air relief valve；6-reversal valve；7-hydraulic motor；8-flow speed control valve；9-three position four-way directional control valve；10-impacts oil cylinder；11-rodless cavity；12-rod chamber；13-flow control valve；14-hydraulic control oil pipe；15-oil inlet pipe；16-flowline；17-hydraulic control one-way valve.
Detailed description of the invention
With detailed description of the invention, utility model is described in further detail below in conjunction with the accompanying drawings.
It is illustrated in figure 1 the schematic diagram of this utility model rock drill hydraulic system；nullThis utility model one rock drill hydraulic system，Including pressure oil pipe 1、Oil return pipe 2、The overflow valve 3 being arranged on pressure oil pipe 1、Hydraulic motor system and impact cylinder system，Described impact cylinder system includes the three position four-way directional control valve 9 being connected on pressure oil pipe 1 and oil return pipe 2、Impact oil cylinder 10、It is arranged on the flow control valve 13 on impact oil cylinder 10 and is connected between three position four-way directional control valve 9 and flow control valve 13 and the flowline 16 that connects with the impact rod chamber 12 of oil cylinder 10 and rodless cavity 11 respectively and oil inlet pipe 15，It is provided with hydraulic control one-way valve 17 on oil inlet pipe 15 between described impact oil cylinder 10 and flow control valve 13，It is provided with back pressure oilhole in the rodless cavity 11 of described impact oil cylinder 10，Described back pressure oilhole is connected on the hydraulic control passage of hydraulic control one-way valve 10 by hydraulic control oil pipe 16，Described back pressure oilhole is connected with piston seal when piston reset.
nullThe present embodiment is by being provided with back pressure hydraulic fluid port at impact oil cylinder rodless cavity，Back pressure hydraulic fluid port is connected on the hydraulic control passage of hydraulic control one-way valve by hydraulic control oil pipe，In rodless cavity oil-feed、Rod chamber is fuel-displaced，Hydraulic control one-way valve is in open mode，Convenient impact cylinder piston rod impacts，When impact cylinder piston rod arrives precalculated position flow control valve commutation，Hydraulic control one-way valve spring reset is closed，During rod chamber oil-feed，Rodless cavity pressure increases，Pressure oil passes through back pressure oilhole、Hydraulic control oil pipe 16 enters hydraulic control one-way valve 10，Hydraulic control one-way valve 10 is made to open，Rodless cavity is fuel-displaced，Impact cylinder piston rod arrive precalculated position will flow control valve commutation time，Piston starts to seal back pressure oilhole，Hydraulic control one-way valve opening reduces，The pressure of rodless cavity increases，Play the effect of back pressure，Until when impacting cylinder piston rod and arriving precalculated position flow control valve commutation，Rodless cavity oil-feed、Rod chamber is fuel-displaced，Hydraulic control one-way valve is in open mode，Carry out impact cycle next time.
Further, the front end being positioned at three position four-way directional control valve 9 on preferred described pressure oil pipe 1 is provided with air relief valve 6, preferably air relief valve 6 is set to piloted reducer, this structure is conducive to when impacting oil cylinder and being operated, the action between hydraulic motor and impact oil cylinder is avoided to influence each other, it is ensured that hydraulic motor and the pressure of impact oil cylinder and flow.
Further, preferred described hydraulic motor system includes reversal valve 6, flow speed control valve 8 and the hydraulic motor 7 being connected in turn on pressure oil pipe and oil return pipe, and this structure is conducive to controlling pressure and the speed of hydraulic motor.
Finally illustrate is, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical solution of the utility model can be modified or equivalent, without deviating from objective and the scope of technical solutions of the utility model, it all should be contained in the middle of right of the present utility model.
Claims (3)
1. a rock drill hydraulic system, including pressure oil pipe, oil return pipe, the overflow valve being arranged on pressure oil pipe, hydraulic motor system and impact cylinder system, it is characterized in that: described impact cylinder system includes the three position four-way directional control valve being connected on pressure oil pipe and oil return pipe, impact oil cylinder, it is arranged on the flow control valve on impact oil cylinder and is connected between three position four-way directional control valve and flow control valve and the flowline that connects with the impact rod chamber of oil cylinder and rodless cavity respectively and oil inlet pipe, it is provided with hydraulic control one-way valve on oil inlet pipe between described impact oil cylinder and flow control valve, it is provided with back pressure oilhole in the rodless cavity of described impact oil cylinder, described back pressure oilhole is connected on hydraulic control one-way valve by hydraulic control oil pipe, described back pressure oilhole is connected with piston seal when piston reset.
Rock drill hydraulic system the most according to claim 1, it is characterised in that: the front end being positioned at three position four-way directional control valve on described pressure oil pipe is provided with air relief valve.
Rock drill hydraulic system the most according to claim 2, it is characterised in that: described hydraulic motor system includes reversal valve, flow speed control valve and the hydraulic motor being connected in turn on pressure oil pipe and oil return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317053.0U CN205478605U (en) | 2016-04-15 | 2016-04-15 | Rock drill hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620317053.0U CN205478605U (en) | 2016-04-15 | 2016-04-15 | Rock drill hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478605U true CN205478605U (en) | 2016-08-17 |
Family
ID=56640928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620317053.0U Expired - Fee Related CN205478605U (en) | 2016-04-15 | 2016-04-15 | Rock drill hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478605U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893626A (en) * | 2017-12-20 | 2018-04-10 | 山东天瑞重工有限公司 | A kind of closed hydraulic drill work system |
| CN108050113A (en) * | 2018-01-17 | 2018-05-18 | 广西固瑞科技股份有限公司 | A kind of horizontal directional drilling machine power head rotation prevents reverse control system |
| CN108457920A (en) * | 2016-09-27 | 2018-08-28 | 陈晓辉 | A kind of anti-deflection control method |
-
2016
- 2016-04-15 CN CN201620317053.0U patent/CN205478605U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457920A (en) * | 2016-09-27 | 2018-08-28 | 陈晓辉 | A kind of anti-deflection control method |
| CN108457920B (en) * | 2016-09-27 | 2019-10-18 | 罗春华 | A kind of anti-deflection control method |
| CN107893626A (en) * | 2017-12-20 | 2018-04-10 | 山东天瑞重工有限公司 | A kind of closed hydraulic drill work system |
| CN108050113A (en) * | 2018-01-17 | 2018-05-18 | 广西固瑞科技股份有限公司 | A kind of horizontal directional drilling machine power head rotation prevents reverse control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20180415 |