CN202519717U - Energy-saving control system of swing arm descending in positive flow system of excavator - Google Patents
Energy-saving control system of swing arm descending in positive flow system of excavator Download PDFInfo
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- CN202519717U CN202519717U CN2012201993060U CN201220199306U CN202519717U CN 202519717 U CN202519717 U CN 202519717U CN 2012201993060 U CN2012201993060 U CN 2012201993060U CN 201220199306 U CN201220199306 U CN 201220199306U CN 202519717 U CN202519717 U CN 202519717U
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- swing arm
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- shuttle valve
- valve
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses an energy-saving control system of swing arm descending in a positive flow system of an excavator. The energy-saving control system is characterized in that a direction control element is arranged between a swing arm descending control port of a swing arm pilot valve and a main valve pilot control port of a main valve swing arm link in a main valve, the output of the direction control element is connected to a swing action shuttle valve inlet of a swing arm action shuttle valve in a control shuttle valve bank, a swing arm action shuttle valve outlet of the swing arm shuttle valve is communicated with the control end of a main pump through a control shuttle valve bank outlet of the control shuttle valve bank, a pressure sensor is arranged in a swing arm large cavity oil channel of a swing arm oil cylinder, and a pressure detection signal of the pressure sensor is used as a working state control signal of the direction control element. According to the energy-saving control system, when the swing arm descends, two pumps are in a small-displacement state, and thus the purpose of reducing energy consumption is achieved.
Description
Technical field
The utility model relates to the positive flow electromagnetic control system of excavator, and main pump need not to open when a kind of realization excavator swing arm of more specifically saying so descended, and only just can realize the intelligence control system that swing arm descends and lands through its minimum injection rate.
Background technology
Hydraulic crawler excavator is a very complex engineering machinery of a kind of applying working condition.The energy-conservation heat radiation of hydraulic system is a technical barrier always in the hydraulic crawler excavator.Along with the increase of excavator tonnage and use power, the hydraulic system heat production also increases thereupon, and great amount of heat causes the oil temperature too high, influences operating efficiency and application life, waste power.
When medium-sized excavator adopts positive flow system, generally use the duplex variable pump, by the duplex variable pump supply with respectively main valve about part.Generally, be to collaborate to realize when swing arm promotes to the big chamber of boom cylinder fuel feeding through double pump; A pump is in little displacement condition when swing arm descends, and another pump work is added the regeneration function of swing arm spool and realized for boom cylinder loculus fuel feeding.Because the factor of equipment deadweight makes that this moment, a lot of energy were lost.
Summary of the invention
The utility model is for avoiding above-mentioned existing in prior technology weak point; Swing arm decline energy-saving control system in the positive flow system of a kind of excavator is provided; In the hope of through Electromagnetic Control,, swing arm make double pump all be in little displacement condition when descending, reach the purpose that cuts down the consumption of energy.
The utility model adopts following technical scheme for the technical solution problem:
The design feature of swing arm decline energy-saving control system is in the positive flow system of the utility model excavator: in the swing arm of swing arm pilot valve I descends control mouthful a and main valve VII, between the main valve pilot control opening b of main valve swing arm couplet VIIa direction control element II is set; The swing arm action shuttle valve inlet c of swing arm action shuttle valve IV among the output Access Control shuttle valve group III of said direction control element II, and the control shuttle valve group outlet e of the swing arm action shuttle valve outlet d of said swing arm action shuttle valve IV through control shuttle valve group III is connected with the control end of main pump V; In the oil circuit of the big chamber of swing arm of boom cylinder VIIb, pressure sensor VI is set, with the pressure detecting signal of said pressure sensor VI duty control signal as direction control element II.
Compared with present technology, the utility model beneficial effect is embodied in:
1, the utility model mouthful directly joins the decline pilot control opening with the main valve swing arm through control that swing arm is descended and is connected, and direction control element is set between it, and connects main pump control mouth with the outlet of direction control element through swing arm action shuttle valve in the control shuttle valve group.Real-time status with the big chamber of swing arm working connection upward pressure sensor serves as according to the duty through electromagnetic signal control direction control element; Reduce the controlled pressure of main pump to reach when swing arm descends, thereby realize cutting down the consumption of energy and reducing the goal of the invention of generating heat and don't influencing some operating mode composite move.Based on the actual operating position of excavator, allow main pump open work when needed, reduce unnecessary power dissipation and energy resource consumption;
2, the utility model is simple in structure, is easy to realize.
Description of drawings
Fig. 1 constitutes sketch map for the utility model system;
Label among the figure: I is the swing arm pilot valve; II is a direction control element; III is control shuttle valve group; IV is a swing arm action shuttle valve; V is a main pump; VI is a pressure sensor; VII is a main valve; VIIa joins for the main valve swing arm; VIIb is a boom cylinder; A is a swing arm decline control mouth; B is the main valve pilot control opening; C is a swing arm action shuttle valve inlet; D is the outlet of swing arm action shuttle valve; The outlet of e control shuttle valve group.
The specific embodiment
Referring to Fig. 1; In the present embodiment in the positive flow system of excavator swing arm decline energy-saving control system be between the main valve pilot control opening b of main valve swing arm couplet VII in the swing arm of swing arm pilot valve I descends control mouthful a and main valve VII direction control element II to be set; The swing arm action shuttle valve inlet c of swing arm action shuttle valve IV among the output Access Control shuttle valve group III of direction control element II, and the control shuttle valve group outlet e of the swing arm action shuttle valve outlet d of swing arm action shuttle valve IV through control shuttle valve group III is connected with the control end of main pump V; In the oil circuit of the big chamber of swing arm of boom cylinder VIIb, pressure sensor VI is set, with the pressure detecting signal of pressure sensor VI duty control signal as direction control element II, and then the unlatching of control main pump V.
When controlling oil, guide that the swing arm pilot valve descends arrives the main valve pilot control opening b that main valve swing arm among the main valve VII joins VIIa; Swing arm begins to descend, and the direction control element II of this moment is for closing the swing arm action shuttle valve inlet c oil return of control shuttle valve group III; The decline guide controls oil can not direction of passage control element II; Main pump V control end is in low-pressure control, and the main pump discharge capacity reduces, and cuts down the consumption of energy.When the big chamber of the swing arm oil circuit oil pressure that is detected acquisition by pressure sensor VI reaches setting pressure; Switch to the duty of conducting through electromagnetic signal control direction control element II; The swing arm action shuttle valve inlet c of control shuttle valve group III communicates with the main valve pilot control opening b that the main valve swing arm joins VIIa; At this moment; The guide that the swing arm pilot valve descends controls the swing arm action shuttle valve inlet c of swing arm action shuttle valve IV among the oily Access Control shuttle valve group III, and acts on main pump V control end through the control shuttle valve group outlet e of control shuttle valve group III, and main pump V is devoted oneself to work.
The utility model to the big chamber of real-time detection swing arm oil circuit pressure, is regulated the pressure of main pump control end with this through pressure sensor, and realization can cut down the consumption of energy, reduce heating in real time, does not influence other operating mode composite move again.
Claims (1)
1. swing arm decline energy-saving control system in the positive flow system of excavator; It is characterized in that between the main valve pilot control opening (b) of main valve swing arm couplet (VIIa) in the swing arm of swing arm pilot valve (I) descends control mouthful (a) and main valve (VII) direction control element (II) being set; The swing arm of swing arm action shuttle valve (IV) action shuttle valve inlet (c) in the output Access Control shuttle valve group (III) of said direction control element (II), and the control shuttle valve group of the swing arm of said swing arm action shuttle valve (IV) action shuttle valve outlet (d) through control shuttle valve group (III) exports (e) and is connected with the control end of main pump (V); In the oil circuit of the big chamber of swing arm of boom cylinder (VIIb), pressure sensor (VI) is set, with the pressure detecting signal of said pressure sensor (VI) duty control signal as direction control element (II).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201993060U CN202519717U (en) | 2012-05-04 | 2012-05-04 | Energy-saving control system of swing arm descending in positive flow system of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201993060U CN202519717U (en) | 2012-05-04 | 2012-05-04 | Energy-saving control system of swing arm descending in positive flow system of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202519717U true CN202519717U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201993060U Expired - Fee Related CN202519717U (en) | 2012-05-04 | 2012-05-04 | Energy-saving control system of swing arm descending in positive flow system of excavator |
Country Status (1)
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| CN (1) | CN202519717U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966132A (en) * | 2012-12-04 | 2013-03-13 | 山河智能装备股份有限公司 | Swing arm descending control loop of hydraulic excavator |
| CN103423225A (en) * | 2013-07-22 | 2013-12-04 | 四川泛水基电液机械有限责任公司 | Low-energy-consumption hydraulic open-type walking system and control method |
| CN104612195A (en) * | 2014-12-31 | 2015-05-13 | 青岛雷沃挖掘机有限公司 | Flow-combining energy-saving hydraulic control structure and method for descending of excavator boom |
| CN107916693A (en) * | 2017-12-27 | 2018-04-17 | 青岛雷沃工程机械有限公司 | Hydraulic crawler excavator turns round automatic safe caution system and hydraulic crawler excavator |
-
2012
- 2012-05-04 CN CN2012201993060U patent/CN202519717U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966132A (en) * | 2012-12-04 | 2013-03-13 | 山河智能装备股份有限公司 | Swing arm descending control loop of hydraulic excavator |
| CN102966132B (en) * | 2012-12-04 | 2015-05-20 | 山河智能装备股份有限公司 | Swing arm descending control loop of hydraulic excavator |
| CN103423225A (en) * | 2013-07-22 | 2013-12-04 | 四川泛水基电液机械有限责任公司 | Low-energy-consumption hydraulic open-type walking system and control method |
| CN103423225B (en) * | 2013-07-22 | 2015-10-28 | 四川泛水基电液机械有限责任公司 | A kind of low energy consumption hydraulic open type running gear and controlling method |
| CN104612195A (en) * | 2014-12-31 | 2015-05-13 | 青岛雷沃挖掘机有限公司 | Flow-combining energy-saving hydraulic control structure and method for descending of excavator boom |
| CN107916693A (en) * | 2017-12-27 | 2018-04-17 | 青岛雷沃工程机械有限公司 | Hydraulic crawler excavator turns round automatic safe caution system and hydraulic crawler excavator |
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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: 20121107 Termination date: 20180504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |