CN209620158U - A kind of excavator hydraulic control system - Google Patents
A kind of excavator hydraulic control system Download PDFInfo
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- CN209620158U CN209620158U CN201920206354.XU CN201920206354U CN209620158U CN 209620158 U CN209620158 U CN 209620158U CN 201920206354 U CN201920206354 U CN 201920206354U CN 209620158 U CN209620158 U CN 209620158U
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- control valve
- rodless cavity
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- rod chamber
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Abstract
The utility model relates to a kind of excavator hydraulic control systems, including bucket arm cylinder and boom cylinder, the rod chamber and rodless cavity of the bucket arm cylinder are connect with the first control valve, the rod chamber and rodless cavity of the boom cylinder are connect with the second control valve, the rod chamber and rodless cavity of the bucket arm cylinder are connect with regeneration control valve, the connection of the rodless cavity of the regeneration control valve and boom cylinder, hydraulic oil in the boom cylinder rodless cavity can enter the rod chamber or rodless cavity of bucket arm cylinder by regeneration control valve, the potential energy when hydraulic control system of the utility model makes full use of swing arm to decline, improve the movement speed of bucket arm cylinder piston rod, it improves work efficiency.
Description
Technical field
The utility model relates to excavator technical fields, and in particular to a kind of excavator hydraulic control system.
Background technique
Inventor has found that swing arm declines by potential energy during the decline of the swing arm of hydraulic crawler excavator and dipper load operation
Decrease speed is too fast, and bucket arm cylinder is since excavator volume is limited, and the limited flow that system can provide can not fully meet bucket
Rod oil cylinder need of work, swing arm decline and meeting harmony when dipper load operation are poor.
Utility model content
Purpose of the utility model is to overcome the deficiencies of the above prior art and provide a kind of excavator hydraulic control systems
System, potential energy when swing arm being made full use of to decline enhance swing arm decline and dipper for increasing the hydraulic fluid flow rate of bucket arm cylinder
Harmony when load operation.
To achieve the above object, the utility model adopts the following technical solutions:
A kind of excavator hydraulic control system, including bucket arm cylinder and boom cylinder, the rod chamber of the bucket arm cylinder
It is connect with rodless cavity with the first control valve, the rod chamber and rodless cavity of the boom cylinder are connect with the second control valve, the bucket
The rod chamber and rodless cavity of rod oil cylinder are connect with regeneration control valve, and the rodless cavity of the regeneration control valve and boom cylinder connects
It connects, the hydraulic oil in the boom cylinder rodless cavity can enter the rod chamber or rodless cavity of bucket arm cylinder by regeneration control valve.
Further, first control valve and the second control valve use three-position four-way valve, and the regeneration control valve uses
Three-position three-way valve.
Further, first control valve has the first normality position, the first working position and the second working position, the first work
It is used for the oil circuit that has of the rod chamber of main pump and bucket arm cylinder, the rodless cavity of bucket arm cylinder and fuel tank, the second working position to be connected position
Oil circuit between the rodless cavity and main pump of conducting bucket arm cylinder, the rod chamber and fuel tank of bucket arm cylinder.
Further, second control valve has the second normality position, third working position and the 4th working position, third work
Position for be connected boom cylinder rod chamber and main pump, boom cylinder rodless cavity and fuel tank between oil circuit, the 4th working position
For the rodless cavity of boom cylinder and the oil circuit of main pump, the rod chamber of boom cylinder and fuel tank to be connected.
Further, the regeneration control valve have third normality position, the 5th working position and the 6th working position, the described 5th
Working position is used to be connected the oil circuit of the rodless cavity of boom cylinder and the rodless cavity of bucket arm cylinder, and the 6th working position is for being connected
The oil circuit of the rod chamber of the rodless cavity and bucket arm cylinder of boom cylinder.
Further, the main pump is connect with fuel tank, can drive flowing of the hydraulic oil in fuel tank in oil circuit.
Further, the regeneration control valve is connect with bigeminy solenoid valve, and bigeminy solenoid valve is used for using hydraulic control again
The movement of raw control valve.
Further, the regeneration control valve, the first control valve and the second control valve, bigeminy solenoid valve connect with pioneer pump
It connects, pioneer pump is used to provide pressure oil for regeneration control valve, the first control valve and the second control valve, guarantees main pump safe opening.
Further, the connection oil circuit of the rod chamber of the bucket arm cylinder and rodless cavity and regeneration control valve is equipped with unidirectional
Valve.
The invention also discloses a kind of working methods of excavator hydraulic control system: when not working, the first control
Valve, the second control valve and regeneration control valve processed switch to the work of normality position.
First control valve switches to the work of the first working position, and the second control valve switches to the work of third working position, regeneration control
Vavle switching processed to the 6th working position works, and when swing arm declines, the hydraulic oil in boom cylinder rodless cavity passes through regeneration control valve stream
Enter the rod chamber of bucket arm cylinder, is that the rod chamber of bucket arm cylinder supplements hydraulic oil.
First control valve switches to the work of the second working position, and the second control valve switches to the work of third working position, regeneration control
Vavle switching processed to the 5th working position works, and when swing arm declines, the hydraulic oil in boom cylinder rodless cavity can pass through regeneration control valve
The rodless cavity of bucket arm cylinder is flowed into, is that the rodless cavity of bucket arm cylinder supplements hydraulic oil.
The utility model has the beneficial effects that
The hydraulic control system of the utility model, by the way that the rodless cavity of boom cylinder is passed through regeneration control valve and dipper oil
The rodless cavity and rod chamber of cylinder connect, and when realizing swing arm decline, the hydraulic oil in swing arm rodless cavity can flow into bucket arm cylinder
Rod chamber or rodless cavity improve the mobile speed of piston rod of bucket arm cylinder supplemented with the hydraulic fluid flow rate for flowing through bucket arm cylinder
Degree, improves the operating efficiency of excavator, optimizes harmony when swing arm decline and dipper load operation, makes the oil of excavator
Consumption reduces.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is status diagram when the utility model embodiment does not work；
Status diagram when Fig. 2 is the decline of the utility model embodiment swing arm, hydraulic oil flows into bucket arm cylinder rod chamber；
Status diagram when Fig. 3 is the decline of the utility model embodiment swing arm, hydraulic oil flows into bucket arm cylinder rodless cavity；
Wherein, 1. bucket arm cylinder, 2. boom cylinders, 3. first control valves, the first normality of 3-1. position, 3-2. first work
Position, the second working position of 3-3., 4. second control valves, the second normality of 4-1. position, 4-2. third working position, the 4th working position of 4-3.,
5. regeneration control valve, 5-1. third normality position, the 5th working position of 5-2., the 6th working position of 5-3., 6. main pumps, 7. fuel tanks, 8. is single
To valve, 9. bigeminy solenoid valves, 10. pioneer pumps.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, when existing descending movable arm of excavator, movable arm potential energy is largely wasted, Er Qiedou
Hydraulic fluid flow rate is unable to satisfy its work requirements in rod oil cylinder, in view of the above-mentioned problems, present applicant proposes a kind of excavator liquid
Pressure control system.
In a kind of exemplary embodiment of the application, a kind of excavator hydraulic control system, a kind of excavator is with hydraulic
Control system, including bucket arm cylinder 1 and boom cylinder 2, the rod chamber and rodless cavity of the bucket arm cylinder and the first control valve 3 connect
It connects, the rod chamber and rodless cavity of the boom cylinder are connect with the second control valve, the rod chamber and rodless cavity of the bucket arm cylinder
It is connect with regeneration control valve, the rodless cavity connection of the regeneration control valve and boom cylinder, in the boom cylinder rodless cavity
Hydraulic oil can enter the rod chamber or rodless cavity of bucket arm cylinder by regeneration control valve.
First control valve uses three-position four-way valve, has the first normality position 3-1, the first working position 3-2 and the second work
Make position 3-3.
First working position is used to be connected the oil of the rod chamber of main pump and bucket arm cylinder, the rodless cavity of bucket arm cylinder and fuel tank
Road, when the first control valve switches to the work of the first working position, the rod chamber of bucket arm cylinder is connect with main pump 6 by oil pipe, main pump
It is connect with fuel tank, the rodless cavity of dipper is connect with by oil pipe with fuel tank 7, and main pump can drive hydraulic oil to enter bucket arm cylinder at this time
Rod chamber, hydraulic oil can flow into fuel tank in the rodless cavity of bucket arm cylinder.
Second working position be used to be connected the rodless cavity and main pump of bucket arm cylinder, the rod chamber of bucket arm cylinder and fuel tank it
Between oil circuit.When first control valve switches to the work of the second working position, the rodless cavity of bucket arm cylinder is connect by oil pipe with main pump,
The rod chamber of bucket arm cylinder is connect by oil pipe with fuel tank, main pump can drive the hydraulic oil in fuel tank enter bucket arm cylinder without bar
Chamber, the hydraulic oil in bucket arm cylinder rod chamber can flow into fuel tank.
Second control valve 4 uses three-position four-way valve, has the second normality position 4-1, third working position 4-2 and the 4th work
Make position 4-3.
Third working position be used for be connected boom cylinder rod chamber and main pump, boom cylinder rodless cavity and fuel tank between
Oil circuit, when the second control valve switches to the work of third working position, the rod chamber of boom cylinder is connect by oil pipe with main pump, swing arm
The rodless cavity of oil cylinder is connect by oil cylinder with fuel tank, and main pump can drive the hydraulic oil in fuel tank to enter the rod chamber of boom cylinder,
Hydraulic oil in boom cylinder rodless cavity enters fuel tank.
4th working position is used to be connected the rodless cavity of boom cylinder and the oil of main pump, the rod chamber of boom cylinder and fuel tank
Road, when the second control valve switches to the work of the 4th working position, main pump can drive the hydraulic oil in fuel tank to enter swing arm by oil pipe
The rodless cavity of oil cylinder, the hydraulic oil in boom cylinder rod chamber flow into fuel tank by oil pipe.
The regeneration control valve 5 uses three-position three-way valve, has third normality position 5-1, the 5th working position 5-2 and the 6th work
Make position 5-3.
5th working position is used to be connected the oil circuit of the rodless cavity of boom cylinder and the rodless cavity of bucket arm cylinder, regeneration control
When Vavle switching processed to the 5th working position works, the hydraulic oil in boom cylinder rodless cavity can flow into the nothing of bucket arm cylinder by oil pipe
Rod cavity.
6th working position is used to be connected the oil circuit of the rodless cavity of boom cylinder and the rod chamber of bucket arm cylinder, regeneration control
When Vavle switching processed to the 6th working position works, the hydraulic oil in boom cylinder rodless cavity can flow into having for bucket arm cylinder by oil pipe
Rod cavity.
The rod chamber and rodless cavity of the bucket arm cylinder and the connected pipes of regeneration control valve are equipped with check valve 8, are used for
Prevent the hydraulic oil into bucket arm cylinder from flowing back.
The regeneration control valve is connect with bigeminy solenoid valve 9, and bigeminy solenoid valve is connect with pioneer pump 10, pioneer pump and fuel tank
Connection, pioneer pump can provide hydraulic oil to regeneration control valve by bigeminy solenoid valve, to control the work of regeneration control valve, first
It leads pump also to connect with the first control valve and the second control valve, hydraulic oil can be provided for the first control valve and the second control valve, thus
It ensure that the safe opening of main pump, this technical solution uses the prior art, herein without describing in detail.
The present embodiment also discloses a kind of working method of hydraulic control system:
When not working, as shown in Figure 1, the first operating valve, the second operating valve and regeneration control valve switch to normality position work
Make.
As shown in Fig. 2, the first control valve switches to the work of the first working position, the second control valve switches to third working position work
Make, regeneration control valve switches to the work of the 6th working position, and main pump driving hydraulic oil enters the rod chamber of bucket arm cylinder, while swing arm
When decline, hydraulic oil a part of boom cylinder rodless cavity flows into fuel tank by third working position, and another part passes through oil pipe the
Six working positions enter the rod chamber of bucket arm cylinder, carry out supplement hydraulic fluid flow rate for the rod chamber of bucket arm cylinder, improve dipper oil
The movement speed of cylinder piston rod, the hydraulic oil in bucket arm cylinder rodless cavity flow into fuel tank.
As shown in figure 3, the first control valve switches to the work of the second working position, the second control valve switches to third working position work
Make, regeneration control valve switches to the work of the 5th working position, and main pump driving hydraulic oil enters the rodless cavity of bucket arm cylinder, swing arm decline
When, hydraulic oil a part in boom cylinder rodless cavity flows into fuel tank by oil pipe, third working position, and another part passes through oil
Pipe, the 5th working position flow into the rodless cavity of bucket arm cylinder, are that the rodless cavity of bucket arm cylinder supplements hydraulic fluid flow rate, improve dipper oil
The movement velocity of cylinder piston rod.
When swing arm rises, the second control valve switches to the work of the 4th working position, and oil pump driving hydraulic oil enters boom cylinder
Rodless cavity, hydraulic oil flows into fuel tank in boom cylinder rod chamber.
The hydraulic control system of the present embodiment, when can use swing arm decline, by the hydraulic oil in boom cylinder rodless cavity
It is driven into the rodless cavity or rod chamber of bucket arm cylinder, hydraulic fluid flow rate is supplemented for bucket arm cylinder, improves bucket arm cylinder piston
The movement speed of bar, improves working efficiency, reduces oil consumption.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (9)
1. a kind of excavator hydraulic control system, which is characterized in that including bucket arm cylinder and boom cylinder, the bucket arm cylinder
Rod chamber and rodless cavity connect with the first control valve, the rod chamber and rodless cavity of the boom cylinder and the second control valve connect
It connects, the rod chamber and rodless cavity of the bucket arm cylinder are connect with regeneration control valve, the regeneration control valve and boom cylinder
Rodless cavity connection, the hydraulic oil in the boom cylinder rodless cavity can be entered by regeneration control valve bucket arm cylinder rod chamber or
Rodless cavity.
2. a kind of excavator hydraulic control system as described in claim 1, which is characterized in that first control valve and the
Two control valves use three-position four-way valve, and the regeneration control valve uses three-position three-way valve.
3. a kind of excavator hydraulic control system as claimed in claim 2, which is characterized in that first control valve has
First normality position, the first working position and the second working position, the first working position are used to be connected the rod chamber of main pump and bucket arm cylinder, bucket
The rodless cavity of rod oil cylinder and fuel tank have oil circuit, and the second working position is used to be connected the rodless cavity and main pump, dipper oil of bucket arm cylinder
Oil circuit between the rod chamber and fuel tank of cylinder.
4. a kind of excavator hydraulic control system as claimed in claim 3, which is characterized in that second control valve has
Second normality position, third working position and the 4th working position, third working position are used to be connected the rod chamber of boom cylinder and main pump, dynamic
Oil circuit between the rodless cavity and fuel tank of arm oil cylinder, the 4th working position are used to be connected the rodless cavity and main pump, swing arm of boom cylinder
The rod chamber of oil cylinder and the oil circuit of fuel tank.
5. a kind of excavator hydraulic control system as claimed in claim 4, which is characterized in that the regeneration control valve has
Third normality position, the 5th working position and the 6th working position, the 5th working position are used to be connected the rodless cavity and bucket of boom cylinder
The oil circuit of the rodless cavity of rod oil cylinder, the 6th working position are used to be connected the rod chamber of the rodless cavity and bucket arm cylinder of boom cylinder
Oil circuit.
6. a kind of excavator hydraulic control system as claimed in claim 5, which is characterized in that the main pump and fuel tank connect
It connects, flowing of the hydraulic oil in fuel tank in oil circuit can be driven.
7. a kind of excavator hydraulic control system as described in claim 1, which is characterized in that the regeneration control valve and two
Join solenoid valve connection, bigeminy solenoid valve is used for the movement using hydraulic control regeneration control valve.
8. a kind of excavator hydraulic control system as claimed in claim 7, which is characterized in that the regeneration control valve, the
One control valve, the second control valve are and bigeminy solenoid valve is connect with pioneer pump.
9. a kind of excavator hydraulic control system as described in claim 1, which is characterized in that the bucket arm cylinder has bar
The connection oil circuit of chamber and rodless cavity and regeneration control valve is equipped with check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920206354.XU CN209620158U (en) | 2019-02-15 | 2019-02-15 | A kind of excavator hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920206354.XU CN209620158U (en) | 2019-02-15 | 2019-02-15 | A kind of excavator hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209620158U true CN209620158U (en) | 2019-11-12 |
Family
ID=68453779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920206354.XU Active CN209620158U (en) | 2019-02-15 | 2019-02-15 | A kind of excavator hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209620158U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706997A (en) * | 2019-02-15 | 2019-05-03 | 青岛雷沃工程机械有限公司 | A kind of excavator hydraulic control system and working method |
| CN111561015A (en) * | 2020-05-29 | 2020-08-21 | 三一重机有限公司 | Excavator rotation control method, excavator rotation system and excavator |
-
2019
- 2019-02-15 CN CN201920206354.XU patent/CN209620158U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706997A (en) * | 2019-02-15 | 2019-05-03 | 青岛雷沃工程机械有限公司 | A kind of excavator hydraulic control system and working method |
| CN111561015A (en) * | 2020-05-29 | 2020-08-21 | 三一重机有限公司 | Excavator rotation control method, excavator rotation system and excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: LOVOL Engineering Machinery Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: QINGDAO LOVOL ENGINEERING MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee after: Lovol Heavy Industry Group Co.,Ltd. Address before: 266500 No. 75 East Huanghe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: LOVOL Engineering Machinery Group Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |