CN110185083A - A kind of regenerating energy-saving formula dipper excavation hydraulic control system - Google Patents
A kind of regenerating energy-saving formula dipper excavation hydraulic control system Download PDFInfo
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- CN110185083A CN110185083A CN201910474468.7A CN201910474468A CN110185083A CN 110185083 A CN110185083 A CN 110185083A CN 201910474468 A CN201910474468 A CN 201910474468A CN 110185083 A CN110185083 A CN 110185083A
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- oil
- main valve
- regeneration
- dipper
- spool
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses a kind of regenerating energy-saving formula dipper and excavates hydraulic control system, including main oil pump, dipper main valve plug, compensating spool, the first regeneration spool and bucket arm cylinder, and dipper main valve plug is connected by the first main valve flowline and compensating spool；Compensating spool is connected by the first recuperation valve flowline with dipper main valve plug, is serially connected with the first check valve on the first recuperation valve flowline；The first main valve regeneration oil inlet pipe is connected on dipper main valve plug, the end of the first main valve regeneration oil inlet pipe is connected with the first regeneration branch oil pipe and the second regeneration branch oil pipe in parallel, and the first regeneration branch oil pipe is connected with the first regeneration spool oil inlet of the first regeneration spool；First regeneration spool is connected by the first regeneration spool flowline with the hydraulic oil container in excavator；Second one-way valve is serially connected in second regeneration branch oil pipe, the oil outlet of the second regeneration branch oil pipe is connected with the first recuperation valve flowline.The system not only ensure that dipper excavation movement was strong, but also reduce waste, and energy saving is high.
Description
Technical field
The present invention relates to excavator hydraulic system fields, and in particular to a kind of regenerating energy-saving formula dipper excavation hydraulic control system
System.
Background technique
In engineering machinery field, hydraulic crawler excavator is widely used, using the small type hydraulic excavator of load sensitive system
When carrying out dipper excavation movement, hydraulic oil container is directly arrived in the big chamber oil inlet of bucket arm cylinder, small chamber oil return, since dipper excavation acts
Frequency is higher, and the small chamber recirculating oil quantity of bucket arm cylinder is larger, not only causes waste but also makes system heat generation, causes the loss of energy.
Prior art principle is as shown in Fig. 3 in Figure of description, and B, A mouthfuls connect bucket arm cylinder size chamber, and pa, pb connect
Dipper main valve plug controls (signal) oil circuit.When dipper excavation movement, dipper main valve plug control oil circuit pb has pressure, pushes dipper
Main valve plug moves up, and high pressure oil flows to the big chamber of bucket arm cylinder by dipper main valve plug-compensating spool-dipper main valve plug, and dipper carries out
Excavation movement, the small chamber hydraulic oil of bucket arm cylinder directly return hydraulic oil container through dipper main valve plug.
In prior art, acted using the small type hydraulic excavator of load sensitive system in frequent progress dipper excavation
When, the small chamber hydraulic oil of bucket arm cylinder directly flows back to hydraulic oil container, has both caused waste, while hydraulic energy transfer is thermal energy, system
Temperature rises, and causes the loss of energy.
Summary of the invention
The purpose of the present invention is to provide a kind of regenerating energy-saving formula dippers to excavate hydraulic control system, which both ensure that
Dipper excavation movement is strong, and reduces waste, reduces because of the loss that hydraulic energy transfer is thermal energy, to reach energy-efficient mesh
's.
To achieve the goals above, the technical solution of use is the present invention:
A kind of regenerating energy-saving formula dipper excavates hydraulic control system, including main oil pump, dipper main valve plug, compensating spool, the
One regeneration spool and bucket arm cylinder, main oil pump pass through the first main valve oil inlet phase of the first main valve oil inlet pipe and dipper main valve plug
Even, the first main valve oil outlet of dipper main valve plug being connected by the first main valve flowline and compensating spool；
Compensating spool is connected by the first recuperation valve flowline with the second main valve oil inlet on dipper main valve plug, and first mends
It repays and is serially connected with the first check valve on valve flowline；
Dipper main valve plug the first main valve regeneration hydraulic fluid port on is connected with the first main valve regeneration oil inlet pipe, the first main valve regenerate into
The end of oil pipe is connected with the first regeneration branch oil pipe and the second regeneration branch oil pipe, the first regeneration branch oil pipe and the first regeneration valve in parallel
First regeneration spool oil inlet of core is connected；
First regeneration spool is connected by the first regeneration spool flowline with the hydraulic oil container in excavator；Second regeneration branch
Second one-way valve is serially connected in oil pipe, the oil outlet of the second regeneration branch oil pipe and the first recuperation valve of the first check valve rear end are fuel-displaced
Pipe is connected.
Preferably, the dipper main valve plug acts oil pipe by the first main valve plug and is connected with first movement guide's oil pump.
Preferably, the signal hydraulic fluid port of the compensating spool passes through LS signal oil circuit and the hydraulic pressure signal system phase in excavation liquid
Even.
Preferably, the first oil cylinder oil inlet pipe, bucket arm cylinder packet are connected on the second main valve oil outlet of the dipper main valve plug
Big chamber and small chamber are included, the first oil cylinder oil inlet pipe is connected with the big chamber of bucket arm cylinder.
Preferably, the first oil cylinder oil return pipe, the first oil cylinder oil return pipe and dipper are connected on the small chamber of the bucket arm cylinder
First main valve oil return opening of main valve plug is connected.
Preferably, the first regeneration valve in-core is provided with throttle valve, and throttle valve both ends are separately connected the first regeneration branch oil
Pipe and the first regeneration spool flowline.
The beneficial effects of the present invention are:
Above-mentioned regenerating energy-saving formula dipper excavates hydraulic control system, and high pressure oil acts on the first regeneration spool, pushes first
Regeneration spool moves down；The small intracavitary hydraulic oil of bucket arm cylinder flows to the first regeneration spool through dipper main valve plug.Again due to first
The effect of raw spool, a part of hydraulic oil is through the first regeneration spool flow back fluid pressure oil case；Another part hydraulic oil passes through second again
Raw branch oil pipe, this another part passes through second one-way valve at this time, high pressure oil is imported in the first recuperation valve flowline, together through struggling against
Bar main valve plug flows to the big chamber of bucket arm cylinder.Hydraulic system in the present invention can make full use of hydraulic oil, and avoid hydraulic pressure system
The temperature of system is excessively high, simple and novel on the whole, and practicability is high, creative high.The system both ensure that dipper excavation movement was strong,
Reduce waste again, reduces because of the loss that hydraulic energy transfer is thermal energy, to reach energy-efficient purpose.
Detailed description of the invention
It, below will be to embodiment or existing in order to clearly demonstrate the embodiment of the present invention or technical solution in the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is of the invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is that regenerating energy-saving formula dipper excavates hydraulic control system integrated connection schematic diagram.
Fig. 2 is the hydraulic connecting schematic diagram of dipper main valve plug, compensating spool and the first regeneration spool.
Fig. 3 is that dipper in the prior art excavates hydraulic scheme.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing:
In conjunction with Fig. 1 to Fig. 3, a kind of regenerating energy-saving formula dipper excavation hydraulic control system, including main oil pump 1, dipper main valve
Core 2, compensating spool 3, first regenerate spool 4 and bucket arm cylinder 5.
Main oil pump 1 is connected by the first main valve oil inlet pipe 11 with the first main valve oil inlet of dipper main valve plug 2, dipper main valve
First main valve oil outlet of core 2 is connected by the first main valve flowline 21 and compensating spool 3.
Compensating spool 3 is connected by the first recuperation valve flowline 31 with the second main valve oil inlet on dipper main valve plug 2, the
The first check valve 32 is serially connected on one recuperation valve flowline 31.
It is connected with the first main valve regeneration oil inlet pipe 41 on the first main valve regeneration hydraulic fluid port of dipper main valve plug 2, the first main valve is again
The end of raw 41 pipe of oil inlet is connected with the first regeneration branch oil pipe 42 and the second regeneration branch oil pipe 43 in parallel, the first regeneration branch oil pipe 42
It is connected with the first regeneration spool oil inlet of the first regeneration spool 4.
First regeneration spool 4 is connected by the first regeneration spool flowline 44 with the hydraulic oil container 45 in excavator；Second
Second one-way valve 46, the oil outlet of the second regeneration branch oil pipe 43 and 32 rear end of the first check valve are serially connected in regeneration branch oil pipe 43
First recuperation valve flowline 31 is connected.
Dipper main valve plug 2 acts oil pipe 22 by the first main valve plug and is connected with the first movement guide oil pump 6.Compensating spool 3
Signal hydraulic fluid port by LS signal oil circuit 33 with excavation liquid in hydraulic pressure signal system 7 be connected.
The first oil cylinder oil inlet pipe 23 is connected on second main valve oil outlet of dipper main valve plug 2, bucket arm cylinder 5 includes big chamber 51
With small chamber 52, the first oil cylinder oil inlet pipe 23 is connected with the big chamber 51 of bucket arm cylinder 5.
The first oil cylinder oil return pipe 53, the first oil cylinder oil return pipe 53 and dipper main valve are connected on the small chamber 52 of bucket arm cylinder 5
First main valve oil return opening of core 2 is connected.
It is provided with throttle valve 47 in first regeneration spool 4,47 both ends of throttle valve are separately connected 42 He of the first regeneration branch oil pipe
First regeneration spool flowline 44.
Embodiment 1, above-mentioned regenerating energy-saving formula dipper excavate hydraulic control system, when dipper carries out excavation movement, first
It acts guide's oil pump 6 to act, has pressure in the first main valve plug movement oil pipe 22, push dipper main valve plug 2 to move up, in main oil pump 1
High pressure oil is entered in dipper main valve plug 2 by the first main valve oil inlet pipe 11 and the first main valve oil inlet.
Then after sensing high pressure oil in dipper main valve plug 2, the first main valve oil outlet of dipper main valve plug 2 is opened, high pressure
Oil is entered in compensating spool 3 by the first main valve flowline 21.After high pressure oil enters compensating spool 3, due to compensating spool 3
Signal hydraulic fluid port by LS signal oil circuit 33 and excavate liquid in hydraulic pressure signal system 7, the second main valve oil inlet open, recuperation valve
Hydraulic oil in core 3 is entered in dipper main valve plug 2 by the first recuperation valve flowline 31.
The hydraulic oil level usual pressure for entering dipper main valve plug 2 secondary at this time, then the second main valve oil outlet is opened, liquid
Pressure oil is entered in big chamber 51 by the first oil cylinder oil inlet pipe 23.Hydraulic oil in small chamber 52 is returned by the first oil cylinder oil return pipe 53
Flow to dipper main valve plug 2.
In above process, high pressure oil acts on the first regeneration spool 4, and the first regeneration spool 4 is pushed to move down；Bucket arm cylinder
Hydraulic oil in 5 small chamber 52 flows to the first regeneration spool 4 through dipper main valve plug 2.The effect for regenerating spool 4 due to first, one
Section hydraulic oil flows back to hydraulic oil container 5 through the first regeneration spool 4；Another part hydraulic oil regenerates branch oil pipe 43 by second, this
When this another part pass through second one-way valve 46, high pressure oil is imported in the first recuperation valve flowline 31, together through dipper main valve
Core 2 flows to the big chamber 51 of bucket arm cylinder 5.Hydraulic system in the present invention can make full use of hydraulic oil, and avoid hydraulic system
Temperature it is excessively high, simple and novel on the whole, practicability is high, creative high.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (6)
1. a kind of regenerating energy-saving formula dipper excavates hydraulic control system, which is characterized in that including main oil pump, dipper main valve plug, mend
It repays spool, the first regeneration spool and bucket arm cylinder, main oil pump and passes through the first main valve of the first main valve oil inlet pipe and dipper main valve plug
Oil inlet is connected, and the first main valve oil outlet of dipper main valve plug is connected by the first main valve flowline and compensating spool；
Compensating spool is connected by the first recuperation valve flowline with the second main valve oil inlet on dipper main valve plug, the first recuperation valve
The first check valve is serially connected on flowline；
It is connected with the first main valve regeneration oil inlet pipe on the first main valve regeneration hydraulic fluid port of dipper main valve plug, the first main valve regenerates oil inlet pipe
End be connected in parallel the first regeneration branch oil pipe and the second regeneration branch oil pipe, the first regeneration branch oil pipe and regenerate spool with first
First regeneration spool oil inlet is connected；
First regeneration spool is connected by the first regeneration spool flowline with the hydraulic oil container in excavator；Second regeneration branch oil pipe
Inside it is serially connected with second one-way valve, the oil outlet and the first recuperation valve flowline phase of the first check valve rear end of the second regeneration branch oil pipe
Even.
2. a kind of regenerating energy-saving formula dipper according to claim 1 excavates hydraulic control system, which is characterized in that the bucket
Bar main valve plug acts oil pipe by the first main valve plug and is connected with first movement guide's oil pump.
3. a kind of regenerating energy-saving formula dipper according to claim 1 excavates hydraulic control system, which is characterized in that the benefit
The signal hydraulic fluid port for repaying spool is connected by LS signal oil circuit with the hydraulic pressure signal system excavated in liquid.
4. a kind of regenerating energy-saving formula dipper according to claim 1 excavates hydraulic control system, which is characterized in that the bucket
The first oil cylinder oil inlet pipe is connected on second main valve oil outlet of bar main valve plug, bucket arm cylinder includes big chamber and small chamber, the first oil cylinder
Oil inlet pipe is connected with the big chamber of bucket arm cylinder.
5. a kind of regenerating energy-saving formula dipper according to claim 4 excavates hydraulic control system, which is characterized in that the bucket
The first oil cylinder oil return pipe, the first main valve oil return opening of the first oil cylinder oil return pipe and dipper main valve plug are connected on the small chamber of rod oil cylinder
It is connected.
6. a kind of regenerating energy-saving formula dipper according to claim 1 excavates hydraulic control system, which is characterized in that described the
Throttle valve is provided in one regeneration spool, throttle valve both ends are separately connected the first regeneration branch oil pipe and the first regeneration spool is fuel-displaced
Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474468.7A CN110185083A (en) | 2019-06-03 | 2019-06-03 | A kind of regenerating energy-saving formula dipper excavation hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910474468.7A CN110185083A (en) | 2019-06-03 | 2019-06-03 | A kind of regenerating energy-saving formula dipper excavation hydraulic control system |
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| Publication Number | Publication Date |
|---|---|
| CN110185083A true CN110185083A (en) | 2019-08-30 |
Family
ID=67719706
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910474468.7A Pending CN110185083A (en) | 2019-06-03 | 2019-06-03 | A kind of regenerating energy-saving formula dipper excavation hydraulic control system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437394A (en) * | 2013-09-11 | 2013-12-11 | 上海三一重机有限公司 | Novel 1.5 pump hydraulic system for excavator |
| CN204553377U (en) * | 2015-02-11 | 2015-08-12 | 徐工集团工程机械股份有限公司 | Low energy consumption many actuators hydraulic system and excavator |
| JP2017015132A (en) * | 2015-06-29 | 2017-01-19 | Ｋｙｂ株式会社 | Energy regeneration system |
| CN108575092A (en) * | 2017-01-10 | 2018-09-25 | 株式会社小松制作所 | Working truck and control method |
-
2019
- 2019-06-03 CN CN201910474468.7A patent/CN110185083A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437394A (en) * | 2013-09-11 | 2013-12-11 | 上海三一重机有限公司 | Novel 1.5 pump hydraulic system for excavator |
| CN204553377U (en) * | 2015-02-11 | 2015-08-12 | 徐工集团工程机械股份有限公司 | Low energy consumption many actuators hydraulic system and excavator |
| JP2017015132A (en) * | 2015-06-29 | 2017-01-19 | Ｋｙｂ株式会社 | Energy regeneration system |
| CN108575092A (en) * | 2017-01-10 | 2018-09-25 | 株式会社小松制作所 | Working truck and control method |
Non-Patent Citations (1)
| Title |
|---|
| 马先启等: "《现代工程机械液压传动***：构造、原理与故障排除》", 31 July 2011, 国防工业出版社 * |
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Application publication date: 20190830 |
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| RJ01 | Rejection of invention patent application after publication |