CN202645426U - Push-and-pull hydraulic system for horizontal directional drilling machine - Google Patents
Push-and-pull hydraulic system for horizontal directional drilling machine Download PDFInfo
- Publication number
- CN202645426U CN202645426U CN 201220303879 CN201220303879U CN202645426U CN 202645426 U CN202645426 U CN 202645426U CN 201220303879 CN201220303879 CN 201220303879 CN 201220303879 U CN201220303879 U CN 201220303879U CN 202645426 U CN202645426 U CN 202645426U
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- valve
- pull
- oil
- operated directional
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Abstract
The utility model discloses a push-and-pull hydraulic system for a horizontal directional drilling machine. A push-and-pull pump is connected with a push-and-pull motor through a main reversing valve; an oil outlet of a mud pump is connected with an overflow valve and is connected with a mud motor through an electromagnetic reversing valve; the push-and-pull motor consists of electrically controlled two-point variable motors connected in series; a hydraulic control reversing valve is additionally arranged; an oil inlet of the hydraulic control reversing valve is connected with an outlet of the electromagnetic reversing valve; an oil outlet of the hydraulic control reversing valve penetrates through a one-way valve and is connected in parallel to an oil outlet of the push-and-pull pump; another oil outlet of the hydraulic control reversing valve is connected with an oil return tank pipeline; a control oil path of the hydraulic control reversing valve is connected with a shuttle valve; and two connecting ends of the shuttle valve are associated with a pilot pressure control oil path of the main reversing valve. The two push-and-pull motors are connected in parallel, and the operating pressure of the system is reduced; the push-and-pull motors adopt electrically controlled two-point variables, so that two-gear stepless speed regulation can be realized, and the speed regulation range is wide; and moreover, when a drill stem is replaced, oil is supplemented to the push-and-pull motors through the mud pump, a power head rapidly returns, the time spent on replacing the drill stem is shortened, the working efficiency is improved, and the power of the pump is fully utilized.
Description
Technical field
The utility model relates to horizontal directional drilling machine, relates in particular to a kind of horizontal directional drilling machine push-and-pull hydraulic system.
Background technology
Horizontal directional drilling machine unit head push-and-pull hydraulic control system realizes that by a reversal valve series connection of two push-and-pull motors is with in parallel mostly at present, realize the little moment of torsion of high speed and two kinds of operating modes of low-speed big, system works pressure is the pressure sum of two motors when motor is connected, cause system pressure to raise, have a strong impact on the application life of Hydraulic Elements.When changing drilling rod, mud system quits work, and the slush pump off-load causes power loss.
Summary of the invention
The purpose of this utility model provides a kind of horizontal directional drilling machine push-and-pull hydraulic system, the required little moment of torsion of high speed and two kinds of applying working condition requirements of low-speed big when satisfying the unit head push-and-pull under the prerequisite that does not improve system pressure solve that the original system system pressure raises and the defective of power loss.
The purpose of this utility model realizes as follows: push and pull pump connects the push-and-pull motor by main reversing valve, the slush pump oil-out connects overflow valve and connects MTR by solenoid operated directional valve, the push-and-pull motor is made of automatically controlled two point variable formula motor parallel connections, and two push-and-pull motor rotation directions are opposite; Other has pilot operated directional control valve, the oil-in of pilot operated directional control valve connects a way outlet of solenoid operated directional valve, one road oil-out of pilot operated directional control valve is attempted by on the oil-out of push and pull pump through behind the one way valve, another road oil-out of pilot operated directional control valve takes back the fuel tank pipeline, the oil circuit control of pilot operated directional control valve connects shuttle valve, the pilot pressure oil circuit control of the related main reversing valve of shuttle valve two links.
Pilot operated directional control valve is the two-bit triplet reversal valve.
Solenoid operated directional valve is two position and four-way reversing valves.
When the unit head push-and-pull needs the little moment of torsion operating mode of high speed, set up the push-and-pull motor at minimum injection rate, regulate the push-and-pull pump delivery and realize that the push-and-pull motor is in the stepless time adjustment of top gear; When needs low-speed big operating mode, set up the push-and-pull motor at maximum pump discharge, regulate the push-and-pull pump delivery and realize that the push-and-pull motor is in the stepless time adjustment of low or first gear; When finishing a working cycles, when needing the mounting or dismounting drilling rod, at this moment push-pull system needs fast playback, this moment, mud system quit work, and push-pull system is unloaded, operating pressure is very low, solenoid operated directional valve is connected pilot operated directional control valve, when the push-and-pull main reversing valve has action, pilot pressure oil drives the pilot operated directional control valve connection with the oil circuit of one way valve by shuttle valve, this moment, slush pump forced repairing to realize the returning quickly of push-pull system by one way valve to the push-and-pull motor, had not only reasonably utilized the power of pump, and had improved operating efficiency.Solenoid operated directional valve gets when electric, and slush pump drives MTR, the mud system normal operation, and slush pump can be to the push-pull system repairing during electromagnetic valve dead electricity.
Two push-and-pull motors of the utility model are connected in parallel, and have reduced the operating pressure of system; The push-and-pull motor adopts automatically controlled two point variables, can realize two grades of stepless time adjustments, and speed adjustable range is large; When changing drilling rod, to the repairing of push-and-pull motor, the unit head returning quickly has shortened and has changed the used time of drilling rod, has improved operating efficiency by slush pump, has utilized fully the power of pump simultaneously.
Description of drawings
Fig. 1 is hydraulic connecting figure of the present utility model.
The specific embodiment
With reference to Fig. 1, push and pull pump 1 connects push-and-pull motor 5 by main reversing valve 4, slush pump 10 oil-outs connect overflow valve 2 and connect MTR 8 by solenoid operated directional valve 9, and solenoid operated directional valve 9 is two position and four-way reversing valves, and push-and-pull motor 5 is made of automatically controlled two point variable formula motor parallel connections; Other has pilot operated directional control valve 7, pilot operated directional control valve 7 is the two-bit triplet reversal valve, the oil-in of pilot operated directional control valve 7 connects a way outlet of solenoid operated directional valve 9, one road oil-out of pilot operated directional control valve 7 is attempted by on the oil-out of push and pull pump 1 through behind the one way valve 3, another road oil-out of pilot operated directional control valve 7 takes back the fuel tank pipeline, the oil circuit control of pilot operated directional control valve 7 connects shuttle valve 6, the pilot pressure oil circuit control of the related main reversing valve 4 of 6 liang of links of shuttle valve.
When the unit head push-and-pull, drive the commutation of push-and-pull motor 5 internal control electromagnetic valves by rocker switch and relay, realize the little moment of torsion of high speed and two kinds of operating modes of low-speed big of unit head push-and-pull; When needs mounting or dismounting drilling rod, drive solenoid operated directional valve 9 commutations by rocker switch and relay, mud system is quit work, if this moment, main reversing valve 4 had action, pilot pressure drives pilot operated directional control valve 7 commutations by shuttle valve 6 so, and slush pump 10 forces repairing to realize the returning quickly operating mode of push-pull system by one way valve 3 to push-and-pull motor 5.When rig bores pilot hole, this moment, centripetal force was less, need push-pull system under the little moment of torsion operating mode of high speed, to work, solenoid operated directional valve 9 gets electric, the mud system normal operation, push-and-pull motor 5 internal control electromagnetic valves get electric, and push-and-pull this moment motor 5 discharge capacities are minimum, output speed is high, moment of torsion is little, and the discharge capacity of regulating push and pull pump 1 can realize that push-and-pull motor 5 is in the stepless time adjustment of top gear.Because solenoid operated directional valve 9 must be electric at this moment, no matter how pilot operated directional control valve 7 commutates, and does not carry out repairing.When rig returns when dragging operation, this moment, pull-back force was very large, needed push-pull system to work under the low-speed big operating mode, and solenoid operated directional valve 9 gets electric, the mud system normal operation, push-and-pull motor 5 internal control electromagnetic valve dead electricity, push-and-pull this moment motor 1 discharge capacity is maximum, and output speed is little, moment of torsion is large, the discharge capacity of regulating push and pull pump 1 can realize that push-and-pull motor 5 is in the stepless time adjustment of low or first gear, because solenoid operated directional valve 9 must be electric at this moment, no matter how pilot operated directional control valve 7 commutates, and does not carry out repairing.When rig need to be installed and removed drilling rod, need the unit head Rapid reset, solenoid operated directional valve 9 dead electricity, mud system quits work, push-and-pull motor 5 internal control electromagnetic valves get electric, push-and-pull motor 5 discharge capacities are minimum, this moment, the unit head push-pull system was no-load running, system works pressure is very little, the outlet pressure of slush pump 10 is greater than the push-pull system operating pressure, when main reversing valve 4 has action, pilot pressure is opened shuttle valve 6 and is driven pilot operated directional control valve 7 upper connections, and slush pump 10 output flows are successively by solenoid operated directional valve 9, pilot operated directional control valve 7,3 pairs of push-pull system repairings of one way valve, this moment, push and pull pump 1 and slush pump 10 interflow drove push-and-pull motor 5, push-and-pull motor 5 speed are the highest, thereby realize the quick playback of push-pull system.
Claims (3)
1. horizontal directional drilling machine push-and-pull hydraulic system, push and pull pump connects the push-and-pull motor by main reversing valve, the slush pump oil-out connects overflow valve and connects MTR by solenoid operated directional valve, and it is characterized in that: push-and-pull motor (5) is made of automatically controlled two point variable formula motor parallel connections; Other has pilot operated directional control valve (7), the oil-in of pilot operated directional control valve (7) connects a way outlet of solenoid operated directional valve (9), be attempted by on the oil-out of push and pull pump (1) behind one road oil-out process one way valve (3) of pilot operated directional control valve (7), another road oil-out of pilot operated directional control valve (7) takes back the fuel tank pipeline, the oil circuit control of pilot operated directional control valve (7) connects shuttle valve (6), the pilot pressure oil circuit control of the related main reversing valves of shuttle valve (6) two links (4).
2. horizontal directional drilling machine push-and-pull hydraulic system according to claim 1, it is characterized in that: pilot operated directional control valve (7) is the two-bit triplet reversal valve.
3. horizontal directional drilling machine push-and-pull hydraulic system according to claim 1, it is characterized in that: solenoid operated directional valve (9) is two position and four-way reversing valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303879 CN202645426U (en) | 2012-06-27 | 2012-06-27 | Push-and-pull hydraulic system for horizontal directional drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220303879 CN202645426U (en) | 2012-06-27 | 2012-06-27 | Push-and-pull hydraulic system for horizontal directional drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202645426U true CN202645426U (en) | 2013-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220303879 Expired - Fee Related CN202645426U (en) | 2012-06-27 | 2012-06-27 | Push-and-pull hydraulic system for horizontal directional drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202645426U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727078A (en) * | 2014-01-03 | 2014-04-16 | 徐州重型机械有限公司 | Crane and hydraulic system thereof |
| CN104989694A (en) * | 2015-05-28 | 2015-10-21 | 徐州徐工基础工程机械有限公司 | Safety control system for multi-gear speed of rotation of horizontal directional drilling machine power head |
| 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 |
| CN112302922A (en) * | 2020-11-04 | 2021-02-02 | 徐州徐工基础工程机械有限公司 | Slurry pump start-stop control system and control method |
-
2012
- 2012-06-27 CN CN 201220303879 patent/CN202645426U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727078A (en) * | 2014-01-03 | 2014-04-16 | 徐州重型机械有限公司 | Crane and hydraulic system thereof |
| CN103727078B (en) * | 2014-01-03 | 2017-05-24 | 徐州重型机械有限公司 | Crane and hydraulic system thereof |
| CN104989694A (en) * | 2015-05-28 | 2015-10-21 | 徐州徐工基础工程机械有限公司 | Safety control system for multi-gear speed of rotation of horizontal directional drilling machine power head |
| 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 |
| CN112302922A (en) * | 2020-11-04 | 2021-02-02 | 徐州徐工基础工程机械有限公司 | Slurry pump start-stop control system and control method |
| CN112302922B (en) * | 2020-11-04 | 2022-04-01 | 徐州徐工基础工程机械有限公司 | Slurry pump start-stop control system and control method |
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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 |
Granted publication date: 20130102 Termination date: 20140627 |
|
| EXPY | Termination of patent right or utility model |