CN208965622U - A kind of scrapers perching knife protection system - Google Patents
A kind of scrapers perching knife protection system Download PDFInfo
- Publication number
- CN208965622U CN208965622U CN201821534349.3U CN201821534349U CN208965622U CN 208965622 U CN208965622 U CN 208965622U CN 201821534349 U CN201821534349 U CN 201821534349U CN 208965622 U CN208965622 U CN 208965622U
- Authority
- CN
- China
- Prior art keywords
- chamber
- back cavity
- ante
- lift cylinder
- solenoid valve
- 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
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Abstract
The utility model relates to a kind of scrapers perching knives to protect system; including including back cavity overflow valve, ante-chamber overflow valve, ante-chamber solenoid valve, back cavity solenoid valve and controller; when perching knife is tilted; controller controls ante-chamber solenoid valve after receiving sensor signal and back cavity solenoid valve is opened; the hydraulic oil of the ante-chamber and back cavity of left lift cylinder and right lift cylinder passes through ante-chamber overflow valve and back cavity overflow valve reflux fuel tank; the beneficial effects of the utility model are: removing extra hydraulic fluid pressure, the Hydraulic Elements of lift cylinder are protected.
Description
Technical field
The utility model relates to scrapers technical fields more particularly to a kind of scrapers perching knife to protect system.
Background technique
Scrapers are used to push, level land, the operations such as excavation groundwork device be perching knife in front of scrapers,
Referred to as dozer, ejector dozer etc.；There are mainly two types of movements for perching knife: promote lowering action and tilting action, promoted lowering action by
Lift cylinder is completed, and tilting action is completed by dump ram.
When tilting action executes, lift cylinder is failure to actuate, and dump ram is flexible；At this point, due to the connection of push rod and chassis
It is connected for flexural pivot, therefore perching knife can rotate in vertical plane, to complete tilting action.However, in this process
In, lift cylinder is Planar Mechanisms for perching knife, limits the tilting action of perching knife；Therefore, in tilting procedure, dump ram
A part of strength is used to that the hydraulic oil of dump ram is forced to force outflow from the gap of hydraulic part, and such pressure movement is not
Only it is unfavorable for the long-time service of hydraulic part, while also shortens the service life of oil cylinder mounting bracket.
Utility model content
The purpose of this utility model is to provide scrapers when perching knife is tilted, and lift cylinder hydraulic oil is strong
System compressing outflow, hydraulic part problem easy to damage.
For this purpose, the utility model uses following technical scheme:
A kind of scrapers perching knife protection system, including fuel tank, working barrel, multi-way valve, left lift cylinder and right promotion oil
Cylinder, working barrel connect left lift cylinder and right lift cylinder by multi-way valve, and multi-way valve drain tap is connected with fuel tank by oil pipe,
It further include back cavity overflow valve, ante-chamber overflow valve, ante-chamber solenoid valve, back cavity solenoid valve and controller, the left lift cylinder and the right side
The ante-chamber of lift cylinder connects ante-chamber overflow valve after connecting ante-chamber solenoid valve by oil pipe, and ante-chamber overflow valve connects oil by oil pipe
Case, the left lift cylinder and the back cavity of right lift cylinder connect back cavity overflow valve after connecting back cavity solenoid valve by oil pipe, after
Chamber overflow valve connects fuel tank by oil pipe, and the controller receives sensor signal control ante-chamber solenoid valve and back cavity solenoid valve；
When perching knife is tilted, the controller controls ante-chamber solenoid valve after receiving sensor signal and back cavity solenoid valve is opened, left
The hydraulic oil of the ante-chamber and back cavity of lift cylinder and right lift cylinder passes through ante-chamber overflow valve and back cavity overflow valve reflux fuel tank, when
Ante-chamber overflow valve and back cavity overflow valve are automatically closed after pressure removal, while controller control solenoid valve is closed.
Preferred technical solution further includes equipment handle, the inclined biography of the equipment handle output services device
Sensor signal, equipment handle are equipped with sensor, and when shovel blade inclination needs the line tilt execution of equipment handle elder generation first
Lead control.
Preferred technical solution further includes that the handle tilt sensor signal is travel switch signal.
Preferred technical solution further includes the ante-chamber solenoid valve and back cavity solenoid valve is 2/2-way solenoid valve.
The utility model has the advantages that compared with the prior art
Back cavity overflow valve, ante-chamber overflow valve, ante-chamber solenoid valve, back cavity solenoid valve are controlled by controller realizes that perching knife is promoted
Oil pipe is realized in shovel blade inclination through overflow valve overflow, is removed extra hydraulic fluid pressure, is protected the Hydraulic Elements of lift cylinder.
Detailed description of the invention
Fig. 1 is a kind of scrapers perching knife protection system schematic；
In figure:
1, fuel tank, 2, working barrel, 3, multi-way valve, 4, back cavity solenoid valve, 5, ante-chamber solenoid valve, 6, back cavity overflow valve, 7, preceding
Chamber overflow valve, 8, left lift cylinder, 9, right lift cylinder, 10, controller, 11, equipment handle.
Specific embodiment
A kind of scrapers perching knife of the technical solution of the utility model is further illustrated with embodiment with reference to the accompanying drawing
Protection system, including fuel tank 1, working barrel 2, multi-way valve 3, left lift cylinder 8 and right lift cylinder 9, working barrel 2 pass through multi-way valve
The left lift cylinder 8 of 3 connections and right lift cylinder 9,5 drain tap of multi-way valve are connected with fuel tank 1 by oil pipe, further include back cavity overflow
Valve 6, ante-chamber overflow valve 7, ante-chamber solenoid valve 5, back cavity solenoid valve 4 and controller 10, the left lift cylinder 8 and right lift cylinder
9 ante-chamber connects ante-chamber overflow valve 7 after connecting ante-chamber solenoid valve 5 by oil pipe, and ante-chamber overflow valve 6 connects fuel tank 1 by oil pipe,
The left lift cylinder 8 connects back cavity overflow valve 6 after connecting back cavity solenoid valve 4 by oil pipe with the back cavity of right lift cylinder 9, after
Chamber overflow valve 6 connects fuel tank 1 by oil pipe, and the controller 10 receives sensor signal control ante-chamber solenoid valve 5 and back cavity electricity
Magnet valve 4.
When operator needs perching knife to carry out tilt operation, the position of mobile working device handle 11 is to form travel switch
Signal is transmitted to controller 10, and controller 10 controls ante-chamber solenoid valve 5 and back cavity solenoid valve 4 is opened, so that 8 He of left lift cylinder
The front and back chamber and back cavity overflow valve 6 and ante-chamber overflow valve 7 of right lift cylinder 9 are respectively formed access, left when perching knife starts inclination
The front and back chamber oil pressure of lift cylinder 8 and right lift cylinder 9 increases, and when oil pressure is increased to rated oil pressure, back cavity overflow valve 6 is with before
Chamber overflow valve 7 is opened, and extra hydraulic oil flows back to fuel tank 1 by overflow valve, the pressure drop of lift cylinder after extra hydraulic oil outflow
Low effective protection oil pipe components, and protect oil cylinder installation site.
Claims (4)
1. a kind of scrapers perching knife protects system, including fuel tank (1), working barrel (2), multi-way valve (3), left lift cylinder (8)
With right lift cylinder (9), working barrel (2) connects left lift cylinder (8) and right lift cylinder (9), multi-way valve by multi-way valve (3)
(3) drain tap is connected with fuel tank (1) by oil pipe, it is characterised in that: further include back cavity overflow valve (6), ante-chamber overflow valve (7),
Before ante-chamber solenoid valve (5), back cavity solenoid valve (4) and controller (10), the left lift cylinder (8) and right lift cylinder (9)
Chamber connects ante-chamber overflow valve (7) afterwards by oil pipe connection ante-chamber solenoid valve (5), and ante-chamber overflow valve (7) connects fuel tank by oil pipe
(1), the left lift cylinder (8) connects back cavity solenoid valve (4) by oil pipe with the back cavity of right lift cylinder (9) and connects back cavity afterwards
Overflow valve (6), back cavity overflow valve (6) connects fuel tank (1) by oil pipe, before the controller (10) receives sensor signal control
Chamber solenoid valve (5) and back cavity solenoid valve (4).
2. a kind of scrapers perching knife according to claim 1 protects system, it is characterised in that: further include equipment hand
Handle (11), the inclined sensor signal of equipment handle (11) the output services device.
3. a kind of scrapers perching knife according to claim 2 protects system, it is characterised in that: the handle tilt sensing
Device signal is travel switch signal.
4. a kind of scrapers perching knife according to claim 1 protects system, it is characterised in that: the ante-chamber solenoid valve
(5) and back cavity solenoid valve (4) is 2/2-way solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534349.3U CN208965622U (en) | 2018-09-19 | 2018-09-19 | A kind of scrapers perching knife protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821534349.3U CN208965622U (en) | 2018-09-19 | 2018-09-19 | A kind of scrapers perching knife protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208965622U true CN208965622U (en) | 2019-06-11 |
Family
ID=66757873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821534349.3U Expired - Fee Related CN208965622U (en) | 2018-09-19 | 2018-09-19 | A kind of scrapers perching knife protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208965622U (en) |
-
2018
- 2018-09-19 CN CN201821534349.3U patent/CN208965622U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190611 Termination date: 20200919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |