CN203285779U - Single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves - Google Patents
Single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves Download PDFInfo
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- CN203285779U CN203285779U CN2013202305518U CN201320230551U CN203285779U CN 203285779 U CN203285779 U CN 203285779U CN 2013202305518 U CN2013202305518 U CN 2013202305518U CN 201320230551 U CN201320230551 U CN 201320230551U CN 203285779 U CN203285779 U CN 203285779U
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Abstract
The utility model discloses a single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves. The single-acting hydraulic oil cylinder tractor hanging hydraulic system based on the electromagnetic digital valves mainly comprises an oil pump, a single-acting hydraulic oil cylinder, a normally-closed type electromagnetic digital valve, a check valve, a normally-open type electromagnetic digital valve and an oil tank, wherein the check valve is arranged between the single-acting hydraulic oil cylinder and the oil pump and on an oil inlet way, a working oil port of the single-acting hydraulic oil cylinder is connected with the oil tank through the normally-closed type electromagnetic digital valve, and the normally-open type electromagnetic digital valve is further arranged between the oil pump and the oil tank. The single-acting hydraulic oil cylinder tractor hanging hydraulic system based on the electromagnetic digital valves has the advantages of being rapid in response execution and high in accuracy, greatly reducing cost, and achieving the functions of ascent, descent, float and the neutral position of a hydraulic servo.
Description
Technical field
The utility model relates to agricultural machinery technological field, relates in particular to a kind of tractor of single-action hydrocylinder based on electromagnetism digital valve suspension hydraulic system.
Background technique
Present domestic tractor suspension system is generally by the operating hydraulically operated distributor of pure mechanical actuating mechanism or lifter, control hydraulic directio to realize rising, to descend, the neutral functional status that waits, exist and carry out that response lag, validity are poor, to adjust calibration loaded down with trivial details, awkward shortcoming.Adopt electronic control technology to realize that automation, the intellectuality of tractor suspension system are the industry active demands.The tractor suspension hydraulic system of Typical Foreign is based on the hydraulic system of electronically controlled proportional valve, but cost is relatively high, makes application be subject to certain restriction.
The model utility content
The utility model provides a kind of tractor of single-action hydrocylinder based on electromagnetism digital valve suspension hydraulic system, has the advantages that the response carried out is quick, validity is high and cost significantly reduces, and realizes rising, decline, the unsteady and neutral function of hydraulic servo.
A kind of tractor of single-action hydrocylinder based on electromagnetism digital valve suspension hydraulic system, mainly by oil pump, single-action hydrocylinder, normal close type electromagnetism digital valve, one-way valve, open type electromagnetism digital valve and fuel tank, formed, on the oil-feed oil circuit between single-action hydrocylinder and oil pump, described one-way valve is set; The actuator port of single-action hydrocylinder connects fuel tank by normal close type electromagnetism digital valve, also is provided with an open type electromagnetism digital valve between oil pump and fuel tank.
Preferably, be parallel with a relief valve on the oil return circuit between single-action hydrocylinder and fuel tank.
Preferably, be provided with safety valve between oil pump and fuel tank T.
Adopted technique scheme, the beneficial effects of the utility model are: the utility model by not in the same time the different conditions of open type electromagnetism digital valve and normal close type electromagnetism digital valve realized flow control, thereby realize propradation, neutral condition, decline state and the quick condition of single-action hydrocylinder.The utility model is that the automation that realizes Characteristics of Tractor Hydraulic Suspension System, intelligent control provide the foundation, and have the feature that the response carried out is quick, validity is high and cost significantly reduces.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation;
Wherein: 1, oil pump; 2, single-action hydrocylinder; 3, normal close type electromagnetism digital valve; 4, one-way valve; 5, open type electromagnetism digital valve; 6, relief valve; 7, safety valve; 8, oil-feed oil circuit; 9, oil return circuit; T, fuel tank; A, actuator port; P, oil pump outlet.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment one:
As shown in Figure 1, a kind of tractor of single-action hydrocylinder based on electromagnetism digital valve suspension hydraulic system, this system mainly is comprised of oil pump 1, single-action hydrocylinder 2, normal close type electromagnetism digital valve 3, one-way valve 4, open type electromagnetism digital valve 5 and fuel tank T, is provided with one-way valve 4 on the oil-feed oil circuit 8 between single-action hydrocylinder 2 and oil pump 1; The actuator port A of single-action hydrocylinder 2 connects fuel tank T by normal close type electromagnetism digital valve 3, also is provided with an open type electromagnetism digital valve 5 between oil pump 1 and fuel tank T.Be parallel with a relief valve 6 on the oil return circuit 9 between single-action hydrocylinder 2 and fuel tank T, can maintenance medium force feed inlet pressure constant; , in order to guarantee that the hydraulic element in whole system work in load rating, be provided with safety valve 7 between oil pump 1 and fuel tank T.
The state of the single-action hydrocylinder 2 in this system has propradation, neutral condition, decline state and quick condition, by not in the same time the different conditions of open type electromagnetism digital valve 5 and normal close type electromagnetism digital valve 3 realized flow control.
Its working procedure is described in detail as follows:
Propradation: the electromagnetic coil dead electricity of normal close type electromagnetism digital valve 3 is in closed condition, the electromagnetic coil of open type electromagnetism digital valve 5 is controlled, valve is according to the controlled frequency switch, oil pump outlet P sets up high pressure, the high pressure oil of oil pump 1 is to single-action hydrocylinder 2 actings, export the pressure of P by the switch ratio control oil pump of controlling open type electromagnetism digital valve 5, thereby control the rate of climb of single-action hydrocylinder 2 pistons.
Neutral condition: the electromagnetic coil dead electricity of open type electromagnetism digital valve 5, valve is in open mode, and fuel tank T is flowed back in the hydraulic oil unloading at oil pump outlet P place; The electromagnetic coil dead electricity of normal close type electromagnetism digital valve 3, valve is in closed condition, and the hydraulic oil of single-action hydrocylinder 2 remains in piston cavity and can not increase also and can not reduce, and piston is in neutral condition.
Decline state: the electromagnetic coil dead electricity of open type electromagnetism digital valve 5, valve is in open mode, fuel tank T is flowed back in the hydraulic oil unloading at oil pump outlet P place, the electromagnetic coil of normal close type electromagnetism digital valve 3 is controlled, valve is according to the controlled frequency switch, the hydraulic oil of actuator port A flow back in fuel tank T, and single-action hydrocylinder 2 descends under the Action of Gravity Field of agricultural machinery and implement, the rate of descent of switch proportional control single-action hydrocylinder 2 pistons by controlling normal close type electromagnetism digital valve 3.
Quick condition: the electromagnetic coil dead electricity of open type electromagnetism digital valve 5, valve is in open mode, fuel tank T is flowed back in the hydraulic oil unloading at oil pump outlet P place, the electromagnetic coil of normal close type electromagnetism digital valve 3 obtains electric, valve is in open mode, hydraulic oil oil extraction or oil suction with the different conditions of agricultural machinery and implement in the piston cavity of single-action hydrocylinder 2, piston is in quick condition.
The utility model is not limited to above-mentioned concrete mode of execution, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done, within all dropping on protection domain of the present utility model.
Claims (3)
1. based on the single-action hydrocylinder tractor suspension hydraulic system of electromagnetism digital valve, it is characterized in that, mainly by oil pump, single-action hydrocylinder, normal close type electromagnetism digital valve, one-way valve, open type electromagnetism digital valve and fuel tank, formed, on the oil-feed oil circuit between described single-action hydrocylinder and oil pump, described one-way valve is set; The actuator port of described single-action hydrocylinder connects described fuel tank by described normal close type electromagnetism digital valve, also is provided with a described open type electromagnetism digital valve between described oil pump and fuel tank.
2. the tractor of the single-action hydrocylinder based on electromagnetism digital valve suspension hydraulic system as claimed in claim 1, is characterized in that, is parallel with a relief valve on the oil return circuit between described single-action hydrocylinder and fuel tank.
3. the tractor of the single-action hydrocylinder based on electromagnetism digital valve suspension hydraulic system as claimed in claim 1 or 2, is characterized in that, is provided with safety valve between described oil pump and fuel tank (T).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202305518U CN203285779U (en) | 2013-04-28 | 2013-04-28 | Single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202305518U CN203285779U (en) | 2013-04-28 | 2013-04-28 | Single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203285779U true CN203285779U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202305518U Withdrawn - After Issue CN203285779U (en) | 2013-04-28 | 2013-04-28 | Single-acting hydraulic oil cylinder tractor hanging hydraulic system based on electromagnetic digital valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203285779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256271A (en) * | 2013-04-28 | 2013-08-21 | 潍坊威度电子科技有限公司 | Single-action hydraulic oil cylinder tractor suspension hydraulic system based on electromagnetic digital valve |
-
2013
- 2013-04-28 CN CN2013202305518U patent/CN203285779U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256271A (en) * | 2013-04-28 | 2013-08-21 | 潍坊威度电子科技有限公司 | Single-action hydraulic oil cylinder tractor suspension hydraulic system based on electromagnetic digital valve |
| CN103256271B (en) * | 2013-04-28 | 2017-03-29 | 潍坊威度电子科技有限公司 | Single-action hydrocylinder tractor suspension hydraulic system based on electromagnetic digital valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20150215 Granted publication date: 20131113 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20150815 Granted publication date: 20131113 |
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| PP01 | Preservation of patent right |
Effective date of registration: 20150818 Granted publication date: 20131113 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20160218 Granted publication date: 20131113 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131113 Effective date of abandoning: 20170329 |