CN202483996U - Cooling protection device for hydraulic reversing system - Google Patents
Cooling protection device for hydraulic reversing system Download PDFInfo
- Publication number
- CN202483996U CN202483996U CN2011205737961U CN201120573796U CN202483996U CN 202483996 U CN202483996 U CN 202483996U CN 2011205737961 U CN2011205737961 U CN 2011205737961U CN 201120573796 U CN201120573796 U CN 201120573796U CN 202483996 U CN202483996 U CN 202483996U
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- China
- Prior art keywords
- piston motor
- oil
- hydraulic
- communicated
- flushing
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- Expired - Lifetime
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Abstract
The utility model discloses a cooling protection device for a hydraulic reversing system. The cooling protection device for the hydraulic reversing system comprises a variable piston pump (1.1), a quantitative piston motor (1.2), a first oil line and a second oil line, wherein the variable piston pump (1.1) is connected with the quantitative piston motor (1.2) through the first oil line and the second oil line to form a circuit. The cooling protection device for the hydraulic reversing system is characterized in that the cooling protection device for the hydraulic reversing system further comprises a flush valve (2.2), an oil inlet X of the flush valve (2.2) is communicated with the first oil line on the left side of the quantitative piston motor (1.2), an oil inlet Y of the flush valve (2.2) is communicated with the second oil line on the right side of the quantitative piston motor (1.2), and a flushing oil mouth Z of the flush valve (2.2) is communicated with shell surfaces of the variable piston pump (1.1) and the quantitative piston motor (1.2). The cooling protection device for the hydraulic reversing system has the advantages of being simple in structure and capable of cooling a hydraulic pump and a hydraulic motor, is beneficial to protection of stable operation of the system, and prolongs service life of the system.
Description
Technical field
The utility model belongs to the hydraulics field, relates in particular to a kind of hydraulic pressure reversing mechanism Cooling protector.
Background technique
At present existing steering device of vehicles adopts motor to drive usually, but for heavy vehicle, like vehicles such as Hoisting Machinery or tanks, because the weight of vehicle own is very big, with motor driving enough driving forces can't be provided, and adopts hydraulic driving usually for this reason.But because oil hydraulic pump and oil hydraulic motor power ratio in the hydraulic pressure reversing mechanism are bigger, working long hours can be hot, and oil hydraulic pump and oil hydraulic motor power for a long time at high temperature work entails cause easy infringement, lack working life.
The model utility content
For this reason, the utility model technical problem to be solved provides a kind of simple in structure, timely hydraulic pressure reversing mechanism Cooling protector of cooling liquid press pump and oil hydraulic motor, to overcome the deficiency that existing technology exists.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of hydraulic pressure reversing mechanism Cooling protector; Comprise Variable plunger pump 1.1, quantitatively piston motor 1.2, with Variable plunger pump 1.1, quantitatively piston motor 1.2 connects into first oil circuit and second oil circuit in loop; It is characterized in that: also include flushing valve 2.2; The X filler opening of said flushing valve 2.2 is communicated with left side first oil circuit of quantitative piston motor 1.2; The Y filler opening of said flushing valve 2.2 is communicated with second oil circuit on the right side of quantitative piston motor 1.2, and the Z flushing hydraulic fluid port of said flushing valve 2.2 is communicated to the case surface of Variable plunger pump 1.1 and quantitative piston motor 1.2.
Be control flushing oil mass, the Z flushing hydraulic fluid port of said flushing valve is communicated to the case surface of Variable plunger pump 1.1 and quantitative piston motor 1.2 through throttle valve 5.3.
In the utility model; Through between first oil circuit and second oil circuit, establishing a flushing valve; Just can the part hydraulic oil of oil circuit be drawn the cooling of lowering the temperature of Variable plunger pump and quantitative piston motor through this flushing valve like this, thereby play the effect of protecting oil hydraulic pump and oil hydraulic motor.
Therefore, that the hydraulic pressure reversing mechanism Cooling protector of the utility model has is simple in structure, the timely advantage of cooling liquid press pump and oil hydraulic motor, and favourable protective system stable operation prolongs the life-span of system.
Description of drawings
Be elaborated below in conjunction with accompanying drawing and embodiment the utility model:
Fig. 1 is the system architecture schematic representation of the utility model.
Embodiment
As shown in Figure 1; The hydraulic pressure reversing mechanism Cooling protector of the utility model; Comprise Variable plunger pump 1.1, quantitatively piston motor 1.2, with Variable plunger pump 1.1, quantitatively piston motor 1.2 connects into first oil circuit 100 and second oil circuit 200 in loop; Also include flushing valve 2.2; The X filler opening of said flushing valve 2.2 is communicated with left side first oil circuit of quantitative piston motor 1.2, and the Y filler opening of said flushing valve 2.2 is communicated with second oil circuit on the right side of quantitative piston motor 1.2, and the Z flushing hydraulic fluid port of said flushing valve 2.2 is communicated to the case surface of Variable plunger pump 1.1 and quantitative piston motor 1.2 through throttle valve 5.3.
The one-way valve 2.1 of parallelly connected pair of opposing also on Variable plunger pump 1.1; Wherein the filler opening of two one-way valves 2.1 oil pump 6.1 that interconnects and be connected to the fuel tank place connects first oil circuit and second oil circuit respectively with 8, two one-way valve 2.1 oil outlets of low-pressure safety valve.The outlet port of oil pump 6.1 is provided with filter parallel with one another 6.11 and one-way valve 6.12.
Its working method is:
Variable plunger pump 1.1 rotates under driven by motor; True dip direction and angle of inclination through swash plate in the controlled variable plunger pump 1.1; And then can realize that hydraulic oil is that first oil circuit 100 from the left side gets into quantitative plunger pumps 1.2 or gets into quantitative plunger pumps 1.2 from second oil circuit 200 on right side; Thereby the sense of rotation of the rotatingshaft of control quantitative plunger pump 1.2, and then reach the purpose that turns to.
When hydraulic oil when first oil circuit 100 gets into quantitative plunger pumps 1.2 from the left side; At this moment the valve core movement in the flushing valve 2.2; X filler opening and Z flushing hydraulic fluid port is communicated with; Just there is part hydraulic oil to flow to the case surface of Variable plunger pump 1.1 and quantitative piston motor 1.2 through the X of flushing valve 2.2 filler opening, Z flushing hydraulic fluid port and throttle valve 5.3 (effect of throttle valve 5.3 is control flushing oil masses), leakage oil circuit 300 in first oil circuit 100; To the cooling of lowering the temperature of Variable plunger pump 1.1 and quantitative piston motor 1.2, thereby play the protective system effect.
When hydraulic oil when second oil circuit 200 gets into quantitative plunger pumps 1.2 from the left side; At this moment the valve core movement in the flushing valve 2.2; Y filler opening and Z flushing hydraulic fluid port is communicated with; Just there is part hydraulic oil to flow to the case surface of Variable plunger pump 1.1 and quantitative piston motor 1.2 through the Y of flushing valve 2.2 filler opening, Z flushing hydraulic fluid port and throttle valve 5.3 (effect of throttle valve 5.3 is control flushing oil masses), leakage oil circuit 300 in second oil circuit 100; To the cooling of lowering the temperature of Variable plunger pump 1.1 and quantitative piston motor 1.2, thereby play the protective system effect.
Through above-mentioned detailed description, that the hydraulic pressure reversing mechanism Cooling protector that can find out the utility model has is simple in structure, the timely advantage of cooling liquid press pump and oil hydraulic motor, and favourable protective system stable operation prolongs the life-span of system.
But; Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the utility model; And be not the qualification that is used as the utility model, as long as in the connotation scope of the utility model, all will drop in claims scope of the utility model the above embodiment's variation, modification.
Claims (2)
1. hydraulic pressure reversing mechanism Cooling protector; Comprise Variable plunger pump (1.1), quantitatively piston motor (1.2), with Variable plunger pump (1.1), quantitatively piston motor (1.2) connects into first oil circuit and second oil circuit in loop; It is characterized in that: also include flushing valve (2.2); The X filler opening of said flushing valve (2.2) is communicated with left side first oil circuit of quantitative piston motor (1.2); The Y filler opening of said flushing valve (2.2) is communicated with second oil circuit on the right side of quantitative piston motor (1.2), and the Z flushing hydraulic fluid port of said flushing valve (2.2) is communicated to the case surface of Variable plunger pump (1.1) and quantitative piston motor (1.2).
2. according to the hydraulic pressure reversing mechanism Cooling protector of claim, it is characterized in that: the Z flushing hydraulic fluid port of said flushing valve is communicated to the case surface of Variable plunger pump (1.1) and quantitative piston motor (1.2) through throttle valve (5.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205737961U CN202483996U (en) | 2011-12-31 | 2011-12-31 | Cooling protection device for hydraulic reversing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205737961U CN202483996U (en) | 2011-12-31 | 2011-12-31 | Cooling protection device for hydraulic reversing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202483996U true CN202483996U (en) | 2012-10-10 |
Family
ID=46958422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205737961U Expired - Lifetime CN202483996U (en) | 2011-12-31 | 2011-12-31 | Cooling protection device for hydraulic reversing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202483996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536968A (en) * | 2011-12-31 | 2012-07-04 | 上海电气液压气动有限公司 | Cooling protective device of hydraumatic reversing system |
| CN103206431A (en) * | 2013-04-18 | 2013-07-17 | 中联重科股份有限公司渭南分公司 | Closed rotary system and engineering machine comprising same |
-
2011
- 2011-12-31 CN CN2011205737961U patent/CN202483996U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536968A (en) * | 2011-12-31 | 2012-07-04 | 上海电气液压气动有限公司 | Cooling protective device of hydraumatic reversing system |
| CN103206431A (en) * | 2013-04-18 | 2013-07-17 | 中联重科股份有限公司渭南分公司 | Closed rotary system and engineering machine comprising same |
| CN103206431B (en) * | 2013-04-18 | 2016-03-02 | 中联重科股份有限公司渭南分公司 | Closed rotary system and comprise the engineering machinery of this closed rotary system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |