CN203729356U - Hydraulic excavator movable arm potential energy recovery control device - Google Patents

Hydraulic excavator movable arm potential energy recovery control device Download PDF

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Publication number
CN203729356U
CN203729356U CN201420029590.6U CN201420029590U CN203729356U CN 203729356 U CN203729356 U CN 203729356U CN 201420029590 U CN201420029590 U CN 201420029590U CN 203729356 U CN203729356 U CN 203729356U
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CN
China
Prior art keywords
valve
equalizing
control
potential energy
way
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.)
Withdrawn - After Issue
Application number
CN201420029590.6U
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Chinese (zh)
Inventor
王振兴
李宗�
秦家升
费树辉
史继江
高见厂
孙本强
郑扬
李志鹏
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.)
Xuzhou XCMG Excavator Machinery Co Ltd
Original Assignee
Xuzhou XCMG Excavator Machinery Co Ltd
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Application filed by Xuzhou XCMG Excavator Machinery Co Ltd filed Critical Xuzhou XCMG Excavator Machinery Co Ltd
Priority to CN201420029590.6U priority Critical patent/CN203729356U/en
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Publication of CN203729356U publication Critical patent/CN203729356U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a hydraulic excavator movable arm potential energy recovery control device which comprises a first check valve (1), a first balance valve (2), a second balance valve (3), a second check valve (4) and an overflow valve (5). A first check valve inlet and a first balance valve outlet are connected with a movable arm multi-path control valve outlet. A first check valve outlet and a first balance valve inlet are connected with a second balance valve inlet and a movable arm oil cylinder bottom cavity. A second balance valve outlet is connected with a second check valve inlet. A second check valve outlet is connected with an energy storage or utilization device. A control opening of the first balance valve and a control opening of the second balance valve are connected with a movable arm falling guiding oil way. A control oil return opening of the first balance valve and a control oil return opening of the second balance valve are communicated with an oil tank. The overflow valve is arranged between the second check valve and the energy storage or utilization device. By means of the hydraulic excavator movable arm potential energy recovery control device, high operability can be achieved during movable arm falling micro-operation, operability is not high when movable arm potential energy is rapidly recovered, integration is high, and portability is high.

Description

Hydraulic Excavator's Boom potential energy recovery control device
Technical field
The utility model relates to a kind of hydraulic crawler excavator, and specifically a kind of Hydraulic Excavator's Boom potential energy recovery control device, belongs to excavator technical field.
Background technology
Excavator is to use scraper bowl to excavate higher or lower than the material such as soil, coal, silt or the Soil and Rock after pre-pine that holds machine side, and pack haulage vehicle into or unload the earth moving plant to rickyard, become at present one of topmost engineering machinery in engineering construction.
Hydraulic crawler excavator operating efficiency is high, applied widely, but the problem that its energy consumption is high, discharge is poor requires, under more and more higher background, to show all the more necessity of improvement to energy-conserving and environment-protective in social development.
In the hydraulic crawler excavator course of work, equipment needs frequent rising and decline, in the time rising to a high position, potential energy improves, and in the time declining, too fast for preventing decrease speed, throttling speed control circuit is set conventionally, potential energy a large amount of in throttle grverning process are converted into heat energy, cause system temperature to raise fast, reduced the performance of hydraulic system, also can increase heat radiation power simultaneously.
The current research for excavator potential energy recovery control device, solenoid operated directional valve or the proportional reversing valves of adopting are controlled swing arm action more, complete the recovery of movable arm potential energy simultaneously, if application number is 201120372836.6, the Chinese utility model patent of authorizing on 05 30th, 2012, this patent discloses the one way valve utilizing before luffing jib maintaining valve and has realized the large chamber of boom cylinder and enter, the automatic switchover of return line, utilize the second bidirectional hydraulic control reversal valve to realize accumulator to collection of energy, the automatic decision discharging, but adopt separately solenoid operated directional valve control, cannot ensure the microoperation of swing arm, can sacrifice the performance of swing arm, for another example application number be 201110048582.7,2011 years 05 month 25 days announce Chinese invention patent, this patent discloses the control of employing adoption rate reversal valve and has realized movable arm potential energy recovery, but adoption rate reversal valve control, need the couplings such as proportional reversing valve aperture area, control signal, swing arm exercise performance, and all to again mate for each different type, its versatility and portable bad, debugging and manufacturing cost are higher.
Summary of the invention
For the problems referred to above, the utility model provides a kind of Hydraulic Excavator's Boom potential energy recovery control device, handling height when meeting swing arm decline fine motion and doing, the handling not high but requirement that need reclaim excavator swing arm potential energy when quick acting, change few to the original components and parts of excavator, integrated level is high, portable good.
For achieving the above object, this Hydraulic Excavator's Boom potential energy recovery control device comprises the first one way valve, the first equalizing valve, the second equalizing valve, the second one way valve and overflow valve, the outlet of the entrance of described the first one way valve and the first equalizing valve is connected with the outlet of swing arm multi-way control valve, the entrance of the outlet of the first one way valve and the first equalizing valve is connected with chamber at the bottom of the entrance of the second equalizing valve and boom cylinder, the outlet of the second equalizing valve is connected with the entrance of the second one way valve, the outlet of the second one way valve is connected with stored energy or use device, the control mouth of the first equalizing valve and the second equalizing valve is connected with swing arm decline guide oil circuit, the control oil return opening of the first equalizing valve and the control oil return opening of the second equalizing valve are communicated with fuel tank, overflow valve is arranged between the second one way valve and stored energy or use device.
As further preferred version of the present utility model, described the first one way valve, the second one way valve are the logic valves with reverse cutoff function.
As further preferred version of the present utility model, described the first equalizing valve is solenoid-operated proportional reversal valve open in usual or hydraulic control proportional reversing valve.
As further preferred version of the present utility model, described the second equalizing valve is normally closed type solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
Compared with prior art, the utility model is owing to being provided with the first equalizing valve as micro-action circuit, the second equalizing valve is as quick acting loop, therefore can treat microoperation and fast-descending operation that swing arm declines with a certain discrimination, in the time of microoperation, ensure swing arm exercise performance, in the time that fast-descending operates, ensure the recovery of movable arm potential energy; Because equalizing valve controlled pressure of the present utility model is according to swing arm decline pilot pressure adjustment control, therefore automaticity is high; Because the first equalizing valve and the second equalizing valve are provided with identical controlled pressure source, and direction of action, therefore decline fine motion work and quick acting have realized automatic decision, little to swing arm performance impact; Because this device can be connected between original system swing arm multi-way control valve outlet and chamber entrance at the bottom of boom cylinder, without changing original system, therefore versatility and portable good, can reduce and debug and manufacturing cost.
Brief description of the drawings
Fig. 1 is hydraulic schematic diagram of the present utility model,
Fig. 2 is pilot handle push rod of the present utility model displacement and output pressure graph of relation.
In figure: 1, the first one way valve, 2, the first equalizing valve, 3, the second equalizing valve, 4, the second one way valve, 5, overflow valve, 6, swing arm multi-way control valve, 7, boom cylinder, 8, fuel tank, 9, stored energy or use device, 10, swing arm decline guide oil circuit, 11, oil supply system.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, this Hydraulic Excavator's Boom potential energy recovery control device comprises the first one way valve 1, the first equalizing valve 2, the second equalizing valve 3, the second one way valve 4, overflow valve 5.
The outlet of the entrance of the first one way valve 1 and the first equalizing valve 2 is connected with 6 outlets of swing arm multi-way control valve, the entrance of the outlet of the first one way valve 1 and the first equalizing valve 2 is connected with the second equalizing valve 3 entrances and chamber, 7 end of boom cylinder, the outlet of the second equalizing valve 3 is connected with the entrance of the second one way valve 4, the outlet of the second one way valve 4 is connected with stored energy or use device 9, the control mouth of the first equalizing valve 2 and the second equalizing valve 3 is connected with swing arm decline guide oil circuit 10, the control oil return opening of the control oil return opening of the first equalizing valve 2 and the second equalizing valve 3 is communicated with fuel tank 8, overflow valve 5 is arranged between the second one way valve 4 and stored energy or use device 9.
For can safety action logic and the reliability of system, as further preferred version of the present utility model, described the first one way valve 1, the second one way valve 4 replace with the logic valve with reverse cutoff function.
In order to improve precision and the flexibility of control, as further preferred version of the present utility model, described the first equalizing valve 2 is open in usual, replaces with solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
In order to improve precision and the flexibility of control, as further preferred version of the present utility model, described the second equalizing valve 3 is normally closed type, replaces with solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
Under duty, in the time that swing arm rises, oil supply system 11 fuel feeding, the first equalizing valve 2 is opening, the second equalizing valve 3 is closed condition, and the outlet of swing arm multi-way control valve 6 is communicated with chamber, 7 end of boom cylinder by the first one way valve 1, the first equalizing valve 2, and hydraulic oil promotes excavator swing arm and rises;
In the time that swing arm declines, oil supply system 11 fuel feeding, the first equalizing valve 2, the second equalizing valve 3 controlled pressures are adjusted according to swing arm decline pilot pressure, the action of pilot control handle does not reach total travel, when the state of swing arm decline pilot pressure under P1, swing arm drops to fine motion and does, the first equalizing valve 2 is opening, the second equalizing valve 3 is closed condition, the first equalizing valve is as micro-action circuit, chamber, 7 end of boom cylinder is communicated with the outlet of swing arm multi-way control valve 6 by the first equalizing valve 2, 7 end of boom cylinder,, cavity pressure oil was by the former loop oil sump tank 8 of swing arm multi-way control valve 6, the exercise performance of swing arm is subject to the Properties Control of former swing arm multi-way control valve 6 spools, identical with original system, in the time that swing arm decline pilot control handle output pressure is greater than the state of P1, swing arm drops to quick acting, the first equalizing valve 2 is closing process or buttoned-up status, the second equalizing valve 3 is opening process or complete opening, the first equalizing valve 2 and the second equalizing valve 3 move simultaneously, the second equalizing valve is as quick acting loop, and chamber, 7 end of boom cylinder is connected with energy storage device or energy utilization device 9 by the second equalizing valve 3, the second one way valve 4, reaches the effect of reclaiming potential energy, recovered oil hydraulic coupling is subject to overflow valve 5 pressure limit.
It is identical with original system that the utility model has been realized swing arm micro-performance that declines, the recoverable function of gesture is carried out in swing arm decline quick acting, because the first equalizing valve and the second equalizing valve are provided with identical controlled pressure source, and direction of action, therefore decline fine motion work and quick acting realized automatic decision, little to swing arm performance impact.
As shown in Figure 2, in the time of swing arm decline microoperation, pilot handle output pressure is under P1 pressure, and in the time of swing arm decline fast operating, pilot handle output pressure is between P1 and P2, and P2 is greater than P1; Control mouth pressure first equalizing valve 2 under P1 and be held open state, in the time controlling mouth pressure and be greater than P1 in closing process or buttoned-up status; Control mouth pressure second equalizing valve 3 under P1 and keep closed condition, in the time controlling mouth pressure and be greater than P1 in opening process or opening completely.
The utility model can have been treated microoperation and fast-descending operation that swing arm declines with a certain discrimination, ensures swing arm exercise performance in the time of microoperation, ensures the recovery of movable arm potential energy in the time that fast-descending operates; Decline fine motion work and quick acting have realized automatic decision, little to swing arm performance impact, and automaticity is high, versatility and portable good, can reduce debugging and manufacturing cost.

Claims (6)

1. a Hydraulic Excavator's Boom potential energy recovery control device, comprise the first one way valve (1), the first equalizing valve (2), the second equalizing valve (3), the second one way valve (4), overflow valve (5), oil supply system (11) is connected with the entrance of swing arm multi-way control valve (6), the epicoele of boom cylinder (7) is connected with swing arm multi-way control valve (6), it is characterized in that, the outlet of the entrance of the first one way valve (1) and the first equalizing valve (2) is connected with swing arm multi-way control valve (6) outlet, the entrance of the outlet of the first one way valve (1) and the first equalizing valve (2) is connected with the chamber, the end of the second equalizing valve (3) entrance and boom cylinder (7), the outlet of the second equalizing valve (3) is connected with the entrance of the second one way valve (4), the outlet of the second one way valve (4) is connected with stored energy or use device (9), the control mouth of the first equalizing valve (2) and the second equalizing valve (3) is connected with swing arm decline guide oil circuit (10), the control oil return opening of the control oil return opening of the first equalizing valve (2) and the second equalizing valve (3) is communicated with fuel tank (8), overflow valve (5) is arranged between the second one way valve (4) and stored energy or use device (9).
2. Hydraulic Excavator's Boom potential energy recovery control device according to claim 1, is characterized in that, described the first equalizing valve (2) is solenoid-operated proportional reversal valve open in usual or hydraulic control proportional reversing valve.
3. Hydraulic Excavator's Boom potential energy recovery control device according to claim 1, is characterized in that, described the second equalizing valve (3) is normally closed type solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
4. Hydraulic Excavator's Boom potential energy recovery control device according to claim 1, is characterized in that, described the first one way valve (1), the second one way valve (4) are the logic valves with reverse cutoff function.
5. Hydraulic Excavator's Boom potential energy recovery control device according to claim 4, is characterized in that, described the first equalizing valve (2) is solenoid-operated proportional reversal valve open in usual or hydraulic control proportional reversing valve.
6. Hydraulic Excavator's Boom potential energy recovery control device according to claim 4, is characterized in that, described the second equalizing valve (3) is normally closed type solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
CN201420029590.6U 2014-01-17 2014-01-17 Hydraulic excavator movable arm potential energy recovery control device Withdrawn - After Issue CN203729356U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420029590.6U CN203729356U (en) 2014-01-17 2014-01-17 Hydraulic excavator movable arm potential energy recovery control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420029590.6U CN203729356U (en) 2014-01-17 2014-01-17 Hydraulic excavator movable arm potential energy recovery control device

Publications (1)

Publication Number Publication Date
CN203729356U true CN203729356U (en) 2014-07-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103790196A (en) * 2014-01-17 2014-05-14 徐州徐工挖掘机械有限公司 Movable arm potential energy recycle control device of hydraulic excavator
WO2021114669A1 (en) * 2019-12-13 2021-06-17 山河智能装备股份有限公司 Boom hydraulic system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103790196A (en) * 2014-01-17 2014-05-14 徐州徐工挖掘机械有限公司 Movable arm potential energy recycle control device of hydraulic excavator
CN103790196B (en) * 2014-01-17 2016-04-06 徐州徐工挖掘机械有限公司 A kind of Hydraulic Excavator's Boom potential energy recovery control device
WO2021114669A1 (en) * 2019-12-13 2021-06-17 山河智能装备股份有限公司 Boom hydraulic system

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20140723

Effective date of abandoning: 20160406

C25 Abandonment of patent right or utility model to avoid double patenting