CN202370928U - Low-pressure control and lubrication control valve block assembly for wheeled tractor - Google Patents
Low-pressure control and lubrication control valve block assembly for wheeled tractor Download PDFInfo
- Publication number
- CN202370928U CN202370928U CN2011205287940U CN201120528794U CN202370928U CN 202370928 U CN202370928 U CN 202370928U CN 2011205287940 U CN2011205287940 U CN 2011205287940U CN 201120528794 U CN201120528794 U CN 201120528794U CN 202370928 U CN202370928 U CN 202370928U
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- valve
- pressure
- control valve
- lubrication
- solenoid directional
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- Expired - Fee Related
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Abstract
A low-pressure control and lubrication control valve block assembly for a wheeled tractor includes a lubrication pressure one-way valve, a radiator by-pass valve, an overflow valve, a first electromagnetic directional valve, a second electromagnetic directional valve, a reducing valve, a valve body, a third electromagnetic directional valve, a fourth electromagnetic directional valve and a piezometric connector, wherein the radiator by-pass valve is installed at the front part of the valve body; the lubrication pressure one-way valve, as well as the third electromagnetic directional valve and the fourth electromagnetic directional valve both installed in parallel are installed on the left side of the valve body; the first electromagnetic directional valve, the second electromagnetic directional valve and the piezometric connector are installed in parallel on the right side of the valve body; the reducing valve is installed at the upper part of the valve body; the overflow valve is installed at the lower part of the valve body; and an oil passage in the valve body is mutually communicated with all components installed on the valve body. The assembly enables a power take-off device, a four-wheel drive device, a differential lock and other working devices to be combined and separated through electrohydraulic control, and reduces the pressure loss of the hydraulic system as plentiful lubricating oil directly flows to a transmission system when the power take-off device, the four-wheel drive device, the differential lock and other working devices are not operating.
Description
Technical field
The utility model belongs to the tractor field, relates to a kind of wheeled tractor low pressure and handles and the lubrication control valve block assembly.
Background technique
At present, on the various model large power wheel tractors of producing at home, the combination of equipments such as its power output, four-wheel drive and differential lock is mostly adopted electrichydraulic control with separating.Simultaneously, a large amount of gear and bearings also needs more lubricating oil to lubricate in the power train.The control function of multiple device that control valve piece of the prior art is same integrated is sent into lubrication system works to unnecessary fluid but can not reduce working pressure at device when not working.Therefore; Handle and the lubrication control valve block assembly through a tractor low pressure; Output power, the combination of equipment such as four-wheel drive and differential lock realizes with separating through electrichydraulic control; Simultaneously when equipments such as power output, four-wheel drive and differential lock are not worked, a large amount of lubricant oil is not flowed directly into power train, reduced the hydraulic slip of system, simplify tractor structure.
The model utility content
The purpose of the utility model be to provide a kind of simple in structure, use wheeled tractor low pressure reliable, easy operation to handle and the lubrication control valve block assembly.
The utility model can achieve the above object through following technological scheme: wheeled tractor is handled and the lubrication control valve block assembly with low pressure, comprising: lubrication pressure one-way valve, cooler bypass valve, relief valve, first solenoid directional control valve, second solenoid directional control valve, reduction valve, valve body, the 3rd solenoid directional control valve, the 4th solenoid directional control valve, pressure measuring tie-in; It is characterized in that: the front portion of valve body is equipped with cooler bypass valve; The left side is equipped with lubrication pressure one-way valve and the 3rd solenoid directional control valve, the 4th solenoid directional control valve installed side by side; The right side is equipped with first solenoid directional control valve, second solenoid directional control valve and pressure measuring tie-in side by side; Reduction valve is equipped with on top, and relief valve is equipped with in the bottom.
Oil duct in the valve body is interconnected with each parts that is installed on the valve body.
The utility model can reach following beneficial effect: output power, the combination of equipment such as four-wheel drive and differential lock realizes with separating through electrichydraulic control; A large amount of lubricant oil flows directly into power train when equipments such as power output, four-wheel drive and differential lock are not worked simultaneously, has reduced the pressure loss of hydraulic system; Hydraulic system structure is rigorous, and is careful, simplified the tractor overall structure.
Description of drawings
Fig. 1 is the structural representation of manipulation of the utility model wheeled tractor low pressure and lubrication control valve block assembly;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the schematic diagram of manipulation of the utility model wheeled tractor low pressure and lubrication control valve block assembly;
Fig. 4 is that the utility model wheeled tractor low pressure is handled and the schematic representation of lubrication control valve block assembly under the transfer case bonding state;
Fig. 5 is that the utility model wheeled tractor low pressure is handled and the schematic representation of lubrication control valve block assembly under power output bonding state.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description.Shown in Fig. 1～5; Wheeled tractor low pressure is handled and the lubrication control valve block assembly, mainly comprises lubrication pressure one-way valve 1, cooler bypass valve 2, relief valve 3, first solenoid directional control valve 4, second solenoid directional control valve 5, reduction valve 6, valve body 7, the 3rd solenoid directional control valve 8, the 4th solenoid directional control valve 9, pressure measuring tie-in 10 etc.; Wheeled tractor handle with low pressure and the lubrication control valve block assembly through fixed support be bolted to transmission case one side; The front portion of valve body 7 is equipped with cooler bypass valve 2; The left side is equipped with lubrication pressure one-way valve 1 and the 3rd solenoid directional control valve 8, the 4th solenoid directional control valve 9 installed side by side; The right side is equipped with first solenoid directional control valve 4, second solenoid directional control valve 5 and pressure measuring tie-in 10 side by side; Reduction valve 6 is equipped with on top, and relief valve 3 is equipped with in the bottom.Oil duct in the valve body 7 is interconnected with each parts that is installed on the valve body 7.
Under the initial state; The power output of tractor; Transfer case and differential lock are not all worked; All energisings of the 4th solenoid directional control valve 9 of second solenoid directional control valve 5, the 3rd solenoid directional control valve 8 and the control power output clutch of differential lock before and after this moment control, system principle is as shown in Figure 3: after this moment, oil pump came oil to get into valve body 7, through oil duct parallelly connected with relief valve 3 in first solenoid directional control valve, 4 inner oil ducts and the valve body 7; Directly get into the radiator inlet, through directly getting into each spot lubrication of power train behind the radiator; Cooler bypass valve 2 has been guaranteed the front and back pressure reduction through radiator; When the pressure difference through radiator surpassed the setting pressure of cooler bypass valve 2, bypass valve 2 was opened pressure release; The each point lubrication pressure of power train must not surpass the pressure of lubrication pressure one-way valve 1; When transmission lubrication pressure surpassed the pressure set points of lubrication pressure one-way valve 1, lubrication pressure one-way valve 1 was opened, pressure release; This moment, oil pump came oil under low pressure with whole flows power train to be lubricated.
Under the working state, to combine like differential lock, and the output of the power of tractor, transfer case is not all worked; Second solenoid directional control valve 5, first solenoid directional control valve 4 of differential lock switched on simultaneously before and after this moment control; The 4th solenoid directional control valve 9 of the 3rd solenoid directional control valve 8 of control transfer case and control power output clutch is not energising all; System principle is as shown in Figure 4: after this moment, oil pump came oil to get into valve body 7; Second solenoid directional control valve, the 5 inner oil ducts of leading up to get into the differential lock oil cylinder, and differential lock combines; First solenoid directional control valve 4 of leading up to gets into relief valve 3, and relief valve 3 has guaranteed the pressure of the hydraulic oil of differential lock oil cylinder; Hydraulic oil through relief valve 3 gets into the radiator inlet, and through directly getting into each spot lubrication of power train behind the radiator; Cooler bypass valve 2 has been guaranteed the front and back pressure reduction through radiator; When the pressure difference through radiator surpassed the setting pressure of cooler bypass valve 2, bypass valve 2 was opened pressure release; The each point lubrication pressure of power train must not surpass the pressure of lubrication pressure one-way valve 1; When transmission lubrication pressure surpassed the pressure set points of lubrication pressure one-way valve 1, lubrication pressure one-way valve 1 was opened, pressure release;
Under the working state, to combine, then control the 4th solenoid directional control valve 9, first solenoid directional control valve 4 of power output clutch and switch on simultaneously like power output clutch; System principle is as shown in Figure 5: after this moment, oil pump came oil to get into valve body 7, lead up to and get into the power output clutch oil cylinders through the 4th solenoid directional control valve 9 inner oil ducts again behind the reduction valve 6, reduction valve 6 has guaranteed the combination pressure of power output clutch; First solenoid directional control valve 4 of leading up to gets into relief valve 3, and relief valve 3 has guaranteed the pressure of the hydraulic oil of system; Hydraulic oil through relief valve 3 gets into the radiator inlet, and through directly getting into each spot lubrication of power train behind the radiator; Cooler bypass valve 2 has been guaranteed the front and back pressure reduction through radiator; When the pressure difference through radiator surpassed the setting pressure of cooler bypass valve 2, bypass valve 2 was opened pressure release.
In like manner, when all power units were worked simultaneously, the hydraulic oil that gets into valve body 7 was leaded up to relief valve 3 and has been guaranteed the pressure of whole system to get into the differential lock oil cylinders through second solenoid directional control valve, 5 inner oil ducts simultaneously, and differential lock combines; After reducing pressure, the reduction valve 6 of leading up to gets into transfer case clutch and power output clutchs through the 3rd solenoid directional control valve 8 and the 4th solenoid directional control valve 9 simultaneously; Transfer case clutch and power output clutch combine; Hydraulic oil through relief valve 3 gets into the radiator inlet, and directly gets into each spot lubrication of power train behind the mistake radiator; Cooler bypass valve 2 has been guaranteed the front and back pressure reduction through radiator; When the pressure difference through radiator surpassed the setting pressure of cooler bypass valve 2, bypass valve 2 was opened pressure release.All there is pressure measuring tie-in to monitor controlling pressure at any time at each pressure change point simultaneously with convenient.
Claims (2)
1. wheeled tractor is handled and the lubrication control valve block assembly with low pressure, comprising: lubrication pressure one-way valve (1), cooler bypass valve (2); Relief valve (3), first solenoid directional control valve (4), second solenoid directional control valve (5); Reduction valve (6), valve body (7), the 3rd solenoid directional control valve (8); The 4th solenoid directional control valve (9), pressure measuring tie-in (10); It is characterized in that: the front portion of valve body (7) is equipped with cooler bypass valve (2); The 3rd solenoid directional control valve (8), the 4th solenoid directional control valve (9) that the left side is equipped with lubrication pressure one-way valve (1) and installs side by side; The right side is equipped with first solenoid directional control valve (4), second solenoid directional control valve (5) and pressure measuring tie-in (10) side by side; Reduction valve (6) is equipped with on top, and relief valve (3) is equipped with in the bottom.
2. wheeled tractor according to claim 1 is handled and the lubrication control valve block assembly with low pressure, it is characterized in that: the oil duct in the valve body (7) is interconnected with each parts that is installed on the valve body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205287940U CN202370928U (en) | 2011-12-16 | 2011-12-16 | Low-pressure control and lubrication control valve block assembly for wheeled tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205287940U CN202370928U (en) | 2011-12-16 | 2011-12-16 | Low-pressure control and lubrication control valve block assembly for wheeled tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370928U true CN202370928U (en) | 2012-08-08 |
Family
ID=46594632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205287940U Expired - Fee Related CN202370928U (en) | 2011-12-16 | 2011-12-16 | Low-pressure control and lubrication control valve block assembly for wheeled tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370928U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257970A (en) * | 2015-09-18 | 2016-01-20 | 广西柳工机械股份有限公司 | Pressure regulating valve |
| CN108394395A (en) * | 2018-04-23 | 2018-08-14 | 第拖拉机股份有限公司 | A kind of used with tractor brake valve block assembly |
| CN109268477A (en) * | 2018-10-18 | 2019-01-25 | 江苏大学 | A kind of automatically controlled automatic spray lubricating arrangement of gearbox and control method |
-
2011
- 2011-12-16 CN CN2011205287940U patent/CN202370928U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257970A (en) * | 2015-09-18 | 2016-01-20 | 广西柳工机械股份有限公司 | Pressure regulating valve |
| CN108394395A (en) * | 2018-04-23 | 2018-08-14 | 第拖拉机股份有限公司 | A kind of used with tractor brake valve block assembly |
| CN109268477A (en) * | 2018-10-18 | 2019-01-25 | 江苏大学 | A kind of automatically controlled automatic spray lubricating arrangement of gearbox and control method |
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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: 20120808 Termination date: 20201216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |