CN202493505U - Energy-saving hydraulic driving system - Google Patents

Energy-saving hydraulic driving system Download PDF

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Publication number
CN202493505U
CN202493505U CN2012201301445U CN201220130144U CN202493505U CN 202493505 U CN202493505 U CN 202493505U CN 2012201301445 U CN2012201301445 U CN 2012201301445U CN 201220130144 U CN201220130144 U CN 201220130144U CN 202493505 U CN202493505 U CN 202493505U
Authority
CN
China
Prior art keywords
hydraulic
valve
electro
oil
energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012201301445U
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Chinese (zh)
Inventor
汤世贤
刘传金
杨道科
刘昌民
张亮亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weihai Huadong Automation Co Ltd
Original Assignee
Weihai Huadong Automation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weihai Huadong Automation Co Ltd filed Critical Weihai Huadong Automation Co Ltd
Priority to CN2012201301445U priority Critical patent/CN202493505U/en
Application granted granted Critical
Publication of CN202493505U publication Critical patent/CN202493505U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an energy-saving hydraulic driving system which belongs to the field of hydraulic systems of machine tools and comprises a hydraulic cylinder. An oil inlet and an oil outlet of the hydraulic cylinder are respectively communicated with an oil outlet and an oil inlet of an electro-hydraulic directional valve, an overflow buffer valve is installed on an oil inlet pipeline of the hydraulic cylinder, a one-way throttle valve installed on the electro-hydraulic directional valve is connected with a variable vane pump through a one-way valve, and the variable vane pump is connected with an asynchronous motor. The energy-saving hydraulic driving system is characterized in that a backpressure overflow valve is installed on an oil return tank pipeline of the electro-hydraulic directional valve, the electro-hydraulic directional valve is connected with a hydraulic pump and an electromagnetic overflow valve through one-way valves, and a speed regulation motor is arranged on the hydraulic pump. The energy-saving hydraulic driving system meets requirements of movement of machine tools for super heavy load, wide speed regulation and low energy consumption and solves the problems of large energy consumption, low speed efficiency and the like.

Description

The energy-conserving hydraulic drive system
Technical field
The utility model relates to machine tool field, especially a kind of large-sized gantry grinding machine energy-conservation hydraulic driving system of moving.
Background technique
As everyone knows, the Hydraulic Adjustable Speed loop is divided into throttle grverning, volumetric speed control, volume throttle grverning.The common employing throttle grverning of motion of machine table promptly uses asynchronous motor to drive quantitative hydraulic pump as system's oil sources now, with the speed control system of proportional velocity regulating valve as stepless speed regulation, also claims " valve control system ".Valve control system; Be that the size that under the situation of total flow unchanged, changes throttle orifice in the fluid loop realizes speed governing; In this system; System provides ceiling capacity all the time, and other all will lose the reasonable utilization that in work, needs only adapts to the hydraulic system of small-power, small flow.Because its overflow or restriction loss greatly not only heating value are high, and when low-speed motion, system effectiveness is low, power consumption is big, temperature rise is higher.This precision to lathe has very big influence, also need be equipped with bigger chiller plant simultaneously and reduce the heat that idle work produces.When moving under the condition of lathe and heavy duty big at stroke, required hydraulic driving system flow is big, and the power of motor greater energy consumption is big, and the throttle grverning system can not satisfy job requirement.
Summary of the invention
In order to overcome the deficiency of existing technology, the utility model provides a kind of energy-conserving hydraulic drive system, realizes the super-heavy load of machine tool motion, wide range speed control, low energy consumption requirement; Because the speed adjustable range of motor is big, also improved the speed adjustable range of hydraulic system greatly; Owing to avoided the flow loss and the pressure loss, can also significantly reduce hydraulic system temperature rise at work simultaneously, make system can better satisfy the speed governing requirement of worktable.
The utility model solves the technological scheme that its technical problem adopted: a kind of energy-conserving hydraulic drive system; Be provided with oil hydraulic cylinder, being communicated with the going out of electro-hydraulic reversing valve, return opening respectively into and out of hydraulic fluid port of oil hydraulic cylinder is equipped with the overflow trimmer valve on the in-line of oil hydraulic cylinder; The one-way throttle valve that is installed on the electro-hydraulic reversing valve links to each other with variable vane pump through one-way valve; Variable vane pump is connected with asynchronous motor, it is characterized in that, on the oil sump tank pipeline of electro-hydraulic reversing valve the back pressure relief valve is installed; Electro-hydraulic reversing valve links to each other with oil hydraulic pump and electromagnetic relief valve through one-way valve, and speed-adjustable motor is installed on the oil hydraulic pump.
The beneficial effect of the utility model is, realized the super-heavy load of machine tool motion, wide range speed control, low energy consumption requirement, problem such as it is big to have overcome power consumption, and low speed efficient is low; Because the speed adjustable range of motor is big, also improved the speed adjustable range of hydraulic system greatly; Owing to avoided the flow loss and the pressure loss, can also significantly reduce hydraulic system temperature rise at work simultaneously, make system can better satisfy the speed governing requirement of worktable; Also reduced the power of cooling equipment.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the structural representation of the utility model.
1. oil suction filters among Fig. 1,2. oil hydraulic pump, 3. speed-adjustable motor, 4. electromagnetic relief valve; 5. one-way valve, 6. electro-hydraulic reversing valve, 7. one-way throttle valve, 8. overflow trimmer valve; 9. oil hydraulic cylinder, 10. oil suction filter, 11. variable vane pumps, 12. asynchronous motors; 13. one-way valve, 14. piping filters, 15. back pressure relief valves.
Embodiment
In Fig. 1; The utility model is provided with oil hydraulic cylinder 9; Being communicated with the going out of electro-hydraulic reversing valve 6, return opening respectively into and out of hydraulic fluid port of oil hydraulic cylinder 9 is equipped with overflow trimmer valve 8 on the in-line of oil hydraulic cylinder 9, the one-way throttle valve 7 that is installed on the electro-hydraulic reversing valve 6 links to each other with variable vane pump 11 through piping filter 14, one-way valve 13; Variable vane pump 11 is connected with asynchronous motor 12 and oil suction filter 10; On the oil sump tank pipeline of electro-hydraulic reversing valve 6 back pressure relief valve 15 is installed, electro-hydraulic reversing valve 6 links to each other with oil hydraulic pump 2 and electromagnetic relief valve 4 through one-way valve 5, and speed-adjustable motor 3 and oil suction filter 1 are installed on the oil hydraulic pump 2.
The utility model oil hydraulic pump 2 connects as hydraulic oil source with speed-adjustable motor 3; Speed-adjustable motor 3 can adopt actuating motor, switched reluctance machines or variable-frequency motor; For also being provided with oil suction filter 1, protection oil hydraulic pump 2 is attached thereto; Electromagnetic relief valve 4 protection hydraulic systems, electromagnetic relief valve 4 off-loads when worktable is not worked get electric safety valve as system during work; One-way valve 5 links to each other with oil hydraulic pump 2 in the pipeline, prevents fluid refluence infringement oil hydraulic pump 2.Electro-hydraulic reversing valve 6 is used in the switching-over of system; Electro-hydraulic reversing valve 6 adopts the external control mode; Designed the secondary circuit of system: asynchronous motor 12 is connected with variable vane pump 11; Oil suction filter 10, one-way valve 13 link to each other with variable vane pump 11 pipelines, carry out the essence filtration for protection hydrovalve pipeline has increased by 14 pairs of fluid of piping filter.Oil hydraulic cylinder 9 links to each other with the oil inlet and outlet of electro-hydraulic reversing valve 6, and overflow trimmer valve 8 is connected with the oil outlet of electro-hydraulic reversing valve 6, and oil hydraulic cylinder 9 is played buffer function, the compression shock when preventing oil hydraulic cylinder 9 switching-overs.
The workflow of the utility model is following: open secondary circuit earlier, asynchronous motor 12 electric after, set up the pilot pressure of variable vane pump 11 pressure as control electro-hydraulic reversing valve 6.Open major loop again, speed-adjustable motor 3 gets electric drive oil hydraulic pump 2 input services oil, whole off-loads when not commutating.This moment, the speed of speed-adjustable motor 3 was minimum, saved flow loss and power consumption.When electromagnetic relief valve 4 electric while electro-hydraulic reversing valve 6 left sides get when electric, worktable moves right.When electromagnetic relief valve 4 electric while electro-hydraulic reversing valve 6 right sides get when electric, worktable is to left movement.Can regulate speed-adjustable motor 3 comes the speed speed of Control work platform motion.When high-speed motion, speed-adjustable motor 3 speed are heightened flow and are increased, and when low-speed motion, speed-adjustable motor 3 speed reduce flow and reduce, and no flow loss has also reduced power consumption simultaneously.And the pressure of whole hydraulic system is adaptive, and behind the protection pressure of setting up main pump, the pressure of system is along with the variation of load changes.So almost can reach no pressure loss state, thereby reduce the heating value of system greatly, because we know that the heating value of hydraulic system depends primarily on the size of the pressure loss.For guaranteeing the stationarity of motion, in the time of can regulate back pressure relief valve 15 back pressures, the detection through flow in the system comes control rotating speed of motor in real time.For the reversing impact that reduces to move, can regulate one-way throttle valve 7 is controlled turn around time.So promptly realized " super-heavy load, wide range speed control, low energy consumption " hydraulic system requirement.

Claims (1)

1. energy-conserving hydraulic drive system; Be provided with oil hydraulic cylinder; Being communicated with the going out of electro-hydraulic reversing valve, return opening respectively into and out of hydraulic fluid port of oil hydraulic cylinder is equipped with the overflow trimmer valve on the in-line of oil hydraulic cylinder, the one-way throttle valve that is installed on the electro-hydraulic reversing valve links to each other with variable vane pump through one-way valve; Variable vane pump is connected with asynchronous motor; It is characterized in that: on the oil sump tank pipeline of electro-hydraulic reversing valve the back pressure relief valve is installed, electro-hydraulic reversing valve links to each other with oil hydraulic pump and electromagnetic relief valve through one-way valve, and speed-adjustable motor is installed on the oil hydraulic pump.
CN2012201301445U 2012-03-31 2012-03-31 Energy-saving hydraulic driving system Expired - Fee Related CN202493505U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012201301445U CN202493505U (en) 2012-03-31 2012-03-31 Energy-saving hydraulic driving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012201301445U CN202493505U (en) 2012-03-31 2012-03-31 Energy-saving hydraulic driving system

Publications (1)

Publication Number Publication Date
CN202493505U true CN202493505U (en) 2012-10-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012201301445U Expired - Fee Related CN202493505U (en) 2012-03-31 2012-03-31 Energy-saving hydraulic driving system

Country Status (1)

Country Link
CN (1) CN202493505U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606550A (en) * 2012-03-31 2012-07-25 威海华东数控股份有限公司 Energy-saving hydraulic driving system
CN107165880A (en) * 2017-06-30 2017-09-15 燕山大学 A kind of ultra-high pressure high flow electro-hydraulic reversing valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102606550A (en) * 2012-03-31 2012-07-25 威海华东数控股份有限公司 Energy-saving hydraulic driving system
CN107165880A (en) * 2017-06-30 2017-09-15 燕山大学 A kind of ultra-high pressure high flow electro-hydraulic reversing valve
CN107165880B (en) * 2017-06-30 2018-07-27 燕山大学 A kind of ultra-high pressure high flow electro-hydraulic reversing valve

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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: 20121017

Termination date: 20170331