CN202971386U - Hydraulic control system of plate bending machine - Google Patents
Hydraulic control system of plate bending machine Download PDFInfo
- Publication number
- CN202971386U CN202971386U CN 201220567072 CN201220567072U CN202971386U CN 202971386 U CN202971386 U CN 202971386U CN 201220567072 CN201220567072 CN 201220567072 CN 201220567072 U CN201220567072 U CN 201220567072U CN 202971386 U CN202971386 U CN 202971386U
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- oil
- way electromagnetic
- electromagnetic valve
- solenoid valve
- valve
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Abstract
The utility model relates to a plate bending machine, in particular to a hydraulic control system of the plate bending machine. The hydraulic control system comprises an oil pump, an oil tank, more than two hydraulic cylinders and a solenoid valve, wherein the solenoid valve controls oil in and out of the hydraulic cylinders, and comprises more than two stages of three-position four-way solenoid valves corresponding to the hydraulic cylinders in a one-to-one manner; each three-position four-way solenoid valve has a M-type middle position function and comprises an oil inlet, an oil outlet and two working oil holes; the two working oil holes are communicated with a rod cavity and a rodless cavity of the corresponding hydraulic cylinder respectively; the oil inlet of the first-stage three-position four-way solenoid valve is connected with the oil pump through a pipeline; the oil outlet of the third-stage three-position four-way solenoid valve is connected with an oil return hole of the oil cylinder through a pipeline; between the two adjacent three-position four-way solenoid valves, the oil outlet of the upper three-position four-way solenoid valve is connected with the oil inlet of the lower three-position four-way solenoid valve through a pipeline; and when each three-position four-way solenoid valve is in a neutral position, the oil inlet is communicated with the oil outlet, and the two working oil holes are closed. With the adoption of the hydraulic control system, serious heat generation of the system is reduced greatly.
Description
Technical field
The utility model relates to plate bending rolls, particularly a kind of plate bending rolls hydraulic control system.
Background technique
Plate bending rolls is a kind of plate forming machinery, is mainly used in the volume circle of steel plate.Plate bending rolls requires pressurized cylinder to provide lasting pressure to steel plate in volume circle process, to complete the volume circle.In this process, hydraulic system need to continue to provide pressure, but pressurized cylinder and being failure to actuate, and system only provides seldom oil to be used for the internal leakage of replenishment system.Tradition roll bending machine hydraulic system comprises solenoid valve, and this solenoid valve is three position four-way electromagnetic valve, and the Median Function of three position four-way electromagnetic valve is the O type, when three position four-way electromagnetic valve was in the neutral position, in valve, four hydraulic fluid ports were totally-enclosed, and oil hydraulic pump does not unload, the oil hydraulic cylinder sealing, the executive component locking.Therefore traditional roll bending machine hydraulic system is when final controlling element is failure to actuate, and system can not off-load, and a large amount of oil is by the relief valve oil sump tank, and system's heating is serious.
Summary of the invention
The purpose of this utility model is to provide a kind of plate bending rolls hydraulic control system, to solve prior art serious problem of system's heating when final controlling element is failure to actuate.
to achieve these goals, the utility model plate bending rolls hydraulic control system adopts following technological scheme: the plate bending rolls hydraulic control system, comprise oil pump, fuel tank, plural oil hydraulic cylinder, control the solenoid valve of each oil hydraulic cylinder turnover oil, described solenoid valve comprises and the oil hydraulic cylinder three position four-way electromagnetic valve more than two-stage one to one, described three position four-way electromagnetic valve at different levels all has M type Median Function, three position four-way electromagnetic valves at different levels include filler opening, oil outlet, two actuator ports that are communicated with respectively with rod chamber and the rodless cavity of corresponding oil hydraulic cylinder, the filler opening of described first order three position four-way electromagnetic valve is connected with oil pump through pipeline, the oil outlet of described afterbody three position four-way electromagnetic valve is connected with the return opening of oil cylinder through pipeline, the oil outlet of the higher level's three position four-way electromagnetic valve between described adjacent three position four-way electromagnetic valve is connected with the filler opening of subordinate three position four-way electromagnetic valve through pipeline, described three position four-way electromagnetic valve at different levels filler opening and oil outlet when the neutral position communicate, two actuator ports all seal.
Comprise three grades of three position four-way electromagnetic valves, the oil hydraulic cylinder that described first order three position four-way electromagnetic valve connects is that the oil hydraulic cylinder that overturning oil cylinder, described second level solenoid valve are connected with third level solenoid valve is the pressurization oil cylinder.
Also comprise relief valve, the import of described relief valve is communicated with oil pump, and the outlet of described relief valve is communicated with the return opening of fuel tank.
Compared with prior art, the utility model adopts the above three position four-way electromagnetic valve with M type Median Function of two-stage, described three position four-way electromagnetic valve at different levels filler opening and oil outlet when the neutral position communicate, therefore when system's attonity, hydraulic oil is by the direct oil sump tank of three position four-way electromagnetic valves at different levels, rather than hydraulic oil can greatly reduce the problem of system's heating by the relief valve oil sump tank.Three position four-way electromagnetic valves at different levels can single movement, also can work simultaneously.
Description of drawings
Fig. 1 is the utility model plate bending rolls hydraulic control system embodiment 1 structural representation.
Embodiment
plate bending rolls hydraulic control system embodiment 1 of the present utility model, as shown in Figure 1, comprise relief valve 3, oil pump 2, fuel tank, three oil hydraulic cylinders, control the solenoid valve of each oil hydraulic cylinder turnover oil, described solenoid valve comprises and oil hydraulic cylinder three grades of three position four-way electromagnetic valves one to one, three position four-way electromagnetic valves at different levels include filler opening, oil outlet, two actuator ports that are communicated with respectively with rod chamber and the rodless cavity of corresponding oil hydraulic cylinder, described three-position four-way valve at different levels all has M type Median Function, described three position four-way electromagnetic valve at different levels filler opening and oil outlet when the neutral position communicate, two actuator ports all seal, described three oil hydraulic cylinders are respectively overturning oil cylinder 11, the first pressurization oil cylinder 12, the second pressurization oil cylinder 13, described three grades of three position four-way electromagnetic valves are respectively first order three position four-way electromagnetic valve 4, second level three position four-way electromagnetic valve 5, third level three position four-way electromagnetic valve 6, first order three position four-way electromagnetic valve 4, second level three position four-way electromagnetic valve 5, third level three position four-way electromagnetic valve 6 respectively with overturning oil cylinder 11, the first pressurization oil cylinder 12, the second pressurization oil cylinder 13 connects, the first filler opening 43 of described first order three position four-way electromagnetic valve 4 is connected with oil pump 2 through pipeline, the first oil outlet 44 of described first order three position four-way electromagnetic valve 4 is connected with the second filler opening 53 of second level three position four-way electromagnetic valve 5 through pipeline, the second oil outlet 54 of described second level three position four-way electromagnetic valve 5 is connected with the 3rd filler opening 63 of third level three position four-way electromagnetic valve 6 through pipeline, the 3rd oil outlet 64 of third level three position four-way electromagnetic valve 6 is connected with the return opening of oil cylinder through pipeline, two actuator ports of described first order three position four-way electromagnetic valve 4 are respectively the first actuator port 41 and the second actuator port 42, two actuator ports of described second level three position four-way electromagnetic valve 5 are respectively the 3rd actuator port 51 and the 4th actuator port 52, two actuator ports of described third level three position four-way electromagnetic valve 6 are respectively the 5th actuator port 61 and the 6th actuator port 62.The import of described relief valve 3 is communicated with oil pump, and the outlet of described relief valve 3 is communicated with the return opening of fuel tank.
The working procedure of above-described embodiment 1: when system's attonity, when three grades of solenoid valves all are in the neutral position, hydraulic oil one tunnel is got back to fuel tank by oil pump, first order three position four-way electromagnetic valve 4, second level three position four-way electromagnetic valve 5, third level three position four-way electromagnetic valve 6 successively through pipeline, and fuel tank is got back to by oil pump 2 and relief valve 3 successively through pipeline in another road of hydraulic oil; Second level three position four-way electromagnetic valve 5, when third level three position four-way electromagnetic valve 6 is worked simultaneously, the first pressurization oil cylinder 12 and the second pressurization oil cylinder 13 are connected and stretch out simultaneously or retract, this moment, operating rate was high, but pressure is low, is fit to idle stroke, less plus-pressure is provided; When moving respectively, can provide larger plus-pressure when the first pressurization oil cylinder 12 and the second pressurization oil cylinder 13.
Except above-described embodiment 1, can also include only a pressurization oil cylinder in other embodiment of the utility model plate bending rolls hydraulic control system or comprise pressurization oil cylinder more than three, that is to say to comprise two-stage three position four-way electromagnetic valve or the above three position four-way electromagnetic valve of level Four.
Claims (3)
1. plate bending rolls hydraulic control system, comprise oil pump, fuel tank, plural oil hydraulic cylinder, control the solenoid valve of each oil hydraulic cylinder turnover oil, it is characterized in that: described solenoid valve comprises and the oil hydraulic cylinder three position four-way electromagnetic valve more than two-stage one to one, described three position four-way electromagnetic valve at different levels all has M type Median Function, three position four-way electromagnetic valves at different levels include filler opening, oil outlet, two actuator ports that are communicated with respectively with rod chamber and the rodless cavity of corresponding oil hydraulic cylinder, the filler opening of described first order three position four-way electromagnetic valve is connected with oil pump through pipeline, the oil outlet of described afterbody three position four-way electromagnetic valve is connected with the return opening of oil cylinder through pipeline, the oil outlet of the higher level's three position four-way electromagnetic valve between described adjacent three position four-way electromagnetic valve is connected with the filler opening of subordinate three position four-way electromagnetic valve through pipeline, described three position four-way electromagnetic valve at different levels filler opening and oil outlet when the neutral position communicate, two actuator ports all seal.
2. plate bending rolls hydraulic control system according to claim 1, it is characterized in that: comprise three grades of three position four-way electromagnetic valves, the oil hydraulic cylinder that described first order three position four-way electromagnetic valve connects is that the oil hydraulic cylinder that overturning oil cylinder, described second level solenoid valve are connected with third level solenoid valve is the pressurization oil cylinder.
3. plate bending rolls hydraulic control system according to claim 1, it is characterized in that: also comprise relief valve, the import of described relief valve is communicated with oil pump, and the outlet of described relief valve is communicated with the return opening of fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567072 CN202971386U (en) | 2012-10-31 | 2012-10-31 | Hydraulic control system of plate bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567072 CN202971386U (en) | 2012-10-31 | 2012-10-31 | Hydraulic control system of plate bending machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971386U true CN202971386U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220567072 Expired - Fee Related CN202971386U (en) | 2012-10-31 | 2012-10-31 | Hydraulic control system of plate bending machine |
Country Status (1)
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| CN (1) | CN202971386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773458A (en) * | 2019-03-19 | 2019-05-21 | 安阳工学院 | The differential bearing assembly device and assembling process of fluid pressure type both ends acted as reference mutual |
| CN109773460A (en) * | 2019-03-19 | 2019-05-21 | 安阳工学院 | A kind of differential bearing press-in device and application method |
-
2012
- 2012-10-31 CN CN 201220567072 patent/CN202971386U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773458A (en) * | 2019-03-19 | 2019-05-21 | 安阳工学院 | The differential bearing assembly device and assembling process of fluid pressure type both ends acted as reference mutual |
| CN109773460A (en) * | 2019-03-19 | 2019-05-21 | 安阳工学院 | A kind of differential bearing press-in device and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131031 |