CN203532377U - Hydraulic automatic reversing device - Google Patents
Hydraulic automatic reversing device Download PDFInfo
- Publication number
- CN203532377U CN203532377U CN201320546276.0U CN201320546276U CN203532377U CN 203532377 U CN203532377 U CN 203532377U CN 201320546276 U CN201320546276 U CN 201320546276U CN 203532377 U CN203532377 U CN 203532377U
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- hydraulic
- opening portion
- fluid port
- piston
- communicated
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Abstract
The utility model provides a hydraulic automatic reversing device. The hydraulic automatic reversing device comprises a reversing valve and an oil cylinder. A first oil port and a second oil port are formed in the reversing valve. The oil cylinder is provided with a cavity, a piston rod is arranged in the cavity, both ends of the piston rod stretch out of the oil cylinder, a piston is fixed to the piston rod, and the outer edge of the piston abuts against the inner wall of the cavity. A first open part and a second open part are arranged on the oil cylinder, the first open part and the second open part are located at the two ends of the piston respectively, the first open part is communicated with the first oil port, the second open part is communicated with the second oil port, and a first hydraulic testing part and a second hydraulic testing part are respectively arranged between the first open part and the second open part. According to the hydraulic automatic reversing device, an electromagnetic valve structure is omitted, and through hydraulic control reversing, maintenance cost is lowered and working life is prolonged.
Description
Technical field
The utility model relates to automatic diverter valve, is specifically related to the automatic reversing apparatus of hydraulic control.
Background technique
The hydraulic pressure reverse flow technique of main flow is electromagnetic switch and the commutation of electric liquid in the market, and electro-hydraulic reversing valve is mainly comprised of solenoid directional control valve and hydraulicchange-over valve, and solenoid directional control valve plays pilot valve effect, and hydraulicchange-over valve plays main valve effect.
So above reverse flow technique is substantially all based on electromagnetic switch technology.Solenoid valve is comprised of electromagnetic coil and magnetic core, and when coil electricity or power-off, the running of magnetic core will cause fluid by valve body or be cut off, to reach the object that changes flow direction.The electromagnetic component of solenoid valve is comprised of parts such as secured core, moving iron core, coils.
The common fault of solenoid valve has:
1, solenoid valve connector lug becomes flexible or wire lead drop out, and solenoid valve must not be electric, can fastening the end of a thread.
2, because the reason electromagnetic valve coils such as water inlet burn out; Spring is really up to the mark, and reaction force is excessive, and very little, suction not also can make coil burnout to coil turn.
3, solenoid valve blocks: the slide valve buckle of solenoid valve and the matching gap of spool very little (being less than 0.008mm) are all generally single-piece assemblings, when having mechanical impurity band to enter or lubricant oil very little time, is easy to block.
4, gas leakage: gas leakage can cause air pressure not enough, making the keying difficulty of Forced Valve, reason is gasket seal damage or worn spool valve and cause several cavity gas blowbies.
Due to the technical reason of electromagnetic switch, cause technique Environmental Conditions to require very high, cost of equipment maintenance is higher, and solenoid valve also needs frequent replacing, can not long-lasting work.
Model utility content
Not enough for above-mentioned prior art, the technical problems to be solved in the utility model is to provide a kind of commutation reciprocating apparatus existing structure, low, the long working life of maintenance cost that is different from.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is that hydraulic automatic reversing apparatus, comprises selector valve and oil cylinder; Described selector valve is provided with the first hydraulic fluid port and the second hydraulic fluid port; Described oil cylinder has a cavity, and cavity is built-in with a piston rod, and the two ends of described piston rod all stretch out in outside oil cylinder, is also fixed with a piston on piston rod, the inwall butt of the outward edge of piston and cavity; Oil cylinder is provided with the first opening portion and the second opening portion, and the first opening portion and the second opening portion are positioned at respectively piston two ends, and the first opening portion is communicated with the first hydraulic fluid port, and the second opening portion is communicated with the second hydraulic fluid port; One first hydraulic test portion and one second hydraulic test portion are set respectively between described the first opening portion and the second opening portion; Described selector valve is used for according to the hydraulic difference between the first hydraulic test portion and the second hydraulic test portion, liquid is delivered to the first opening portion by the first hydraulic fluid port and from the second opening portion withdrawal liquid to the second hydraulic fluid port, or liquid is delivered to the second opening portion by the second hydraulic fluid port and from the first opening portion withdrawal liquid to the first hydraulic fluid port.
Further, described selector valve is provided with first signal hole and secondary signal hole, and first signal hole is communicated with described the first hydraulic test portion, and secondary signal hole is communicated with described the second hydraulic test portion.
Further, the outward edge of described piston is provided with seal ring.
Further, described selector valve is also provided with filler opening and oil drain out; Described filler opening and oil drain out are all communicated with hydraulic power.
Further, described filler opening and oil drain out are communicated with hydraulic power by fuel tap.
Further, described fuel tap is also provided with piezometer.
Hydraulic automatic reversing apparatus of the present utility model has been cancelled electromagnetic valve structure, and commutates by hydraulic control, has reduced maintenance cost, has extended operating life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model hydraulic automatic reversing apparatus.
Fig. 2 is the cylinder structure schematic diagram of the utility model hydraulic automatic reversing apparatus.
1, selector valve; 11, the first hydraulic fluid port; 12, the second hydraulic fluid port; 13, first signal hole; 14, secondary signal hole; 2, oil cylinder; 21, the first hydraulic test portion; 22, the second hydraulic test portion; 23, piston; 24, piston rod; 25, cavity; 31, the first opening portion; 32, the second opening portion.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, hydraulic automatic reversing apparatus of the present utility model, comprises selector valve 1 and oil cylinder 2; Described selector valve 1 is provided with the first hydraulic fluid port 11 and the second hydraulic fluid port 12; Described oil cylinder 2 has a cavity 25, and cavity 25 is built-in with a piston rod 24, and the two ends of described piston rod 24 all stretch out in outside oil cylinder 2, is also fixed with a piston 23 on piston rod 24, the inwall butt of the outward edge of piston 23 and cavity 25; The outward edge of described piston 23 is provided with seal ring, guarantees that the liquid in cavity 25 can be from the gap leakage between piston 23 and cavity 25 inwalls, and assurance piston 23 is normally worked.Oil cylinder 2 is provided with the first opening portion 31 and the second opening portion 32, the first opening portions 31 and the second opening portion 32 and lays respectively at piston 23 two ends, and the first opening portion 31 is communicated with the first hydraulic fluid port 11, and the second opening portion 32 is communicated with the second hydraulic fluid port 12; One first hydraulic test portion 21 and one second hydraulic test portion 22 are set respectively between described the first opening portion 31 and the second opening portion 32; Described selector valve 1 is for according to the hydraulic difference between the first hydraulic test portion 21 and the second hydraulic test portion 22, liquid is delivered to the first opening portion 31 by the first hydraulic fluid port 11 and from the second opening portion 32 withdrawal liquid to the second hydraulic fluid ports 12, or liquid is delivered to the second opening portion 32 by the second hydraulic fluid port 12 and from the first opening portion 31 withdrawal liquid to the first hydraulic fluid ports 11.Wherein, described selector valve 1 is provided with first signal hole 13 and secondary signal hole 14, and first signal hole 13 is communicated with described the first hydraulic test portion 21, and secondary signal hole 14 is communicated with described the second hydraulic test portion 22.Described selector valve 1 is also provided with filler opening and oil drain out; Described filler opening and oil drain out are all communicated with hydraulic power.Filler opening and oil drain out are communicated with hydraulic power by fuel tap.Fuel tap is also provided with piezometer.Selector valve 1 takes out the hydraulic pressure of the first hydraulic test portion 21 and the second hydraulic test portion 22 by described first signal hole 13 and secondary signal hole 14, thereby owing to existing hydraulic difference that the spool of selector valve 1 is moved between first signal hole 13 and secondary signal hole 14 and reaching between by the first hydraulic fluid port 11 output liquids or the two states by the second hydraulic fluid port 12 output liquids, freely switch, make the piston rod 24 of oil cylinder 2 automatically reciprocating.
Working procedure: before starting working, oil cylinder 2 and selector valve 1 are in arbitrary initial state.After opening hydraulic power, pressured fluid flows to oil cylinder 2 by hydraulic power by selector valve 1, and selector valve 1 can for example, be carried liquid by one of them hydraulic fluid port (the first hydraulic fluid port 11) to oil cylinder 2 under original state, in oil cylinder 2, piston 23 forms high pressure near a side of the first hydraulic fluid port 11, opposite side is low pressure, promote piston 23 motions, until the first hydraulic test portion 21 of oil cylinder 2 is communicated with the second hydraulic test portion 22, while there is not pressure difference between the first hydraulic test portion 21 and the second hydraulic test portion 22, selector valve 1 change state, make working state by changing into by the second hydraulic fluid port 12 output liquids from the first hydraulic fluid port 11 output liquids, a piston 23 originally side of low pressure becomes high pressure, thereby reversing motion.Said process repeats conversion automatically, realizes auto reciprocating.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. hydraulic automatic reversing apparatus, is characterized in that: comprise selector valve and oil cylinder; Described selector valve is provided with the first hydraulic fluid port and the second hydraulic fluid port; Described oil cylinder has a cavity, and cavity is built-in with a piston rod, and the two ends of described piston rod all stretch out in outside oil cylinder, is also fixed with a piston on piston rod, the inwall butt of the outward edge of piston and cavity; Oil cylinder is provided with the first opening portion and the second opening portion, and the first opening portion and the second opening portion are positioned at respectively piston two ends, and the first opening portion is communicated with the first hydraulic fluid port, and the second opening portion is communicated with the second hydraulic fluid port; One first hydraulic test portion and one second hydraulic test portion are set respectively between described the first opening portion and the second opening portion; Described selector valve is used for according to the hydraulic difference between the first hydraulic test portion and the second hydraulic test portion, liquid is delivered to the first opening portion by the first hydraulic fluid port and from the second opening portion withdrawal liquid to the second hydraulic fluid port, or liquid is delivered to the second opening portion by the second hydraulic fluid port and from the first opening portion withdrawal liquid to the first hydraulic fluid port.
2. hydraulic automatic reversing apparatus according to claim 1, is characterized in that: described selector valve is provided with first signal hole and secondary signal hole, and first signal hole is communicated with described the first hydraulic test portion, and secondary signal hole is communicated with described the second hydraulic test portion.
3. hydraulic automatic reversing apparatus according to claim 1, is characterized in that: the outward edge of described piston is provided with seal ring.
4. hydraulic automatic reversing apparatus according to claim 1, is characterized in that: described selector valve is also provided with filler opening and oil drain out; Described filler opening and oil drain out are all communicated with hydraulic power.
5. hydraulic automatic reversing apparatus according to claim 4, is characterized in that: described filler opening and oil drain out are communicated with hydraulic power by fuel tap.
6. hydraulic automatic reversing apparatus according to claim 5, is characterized in that: described fuel tap is also provided with piezometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546276.0U CN203532377U (en) | 2013-09-04 | 2013-09-04 | Hydraulic automatic reversing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546276.0U CN203532377U (en) | 2013-09-04 | 2013-09-04 | Hydraulic automatic reversing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532377U true CN203532377U (en) | 2014-04-09 |
Family
ID=50418590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546276.0U Expired - Fee Related CN203532377U (en) | 2013-09-04 | 2013-09-04 | Hydraulic automatic reversing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532377U (en) |
-
2013
- 2013-09-04 CN CN201320546276.0U patent/CN203532377U/en not_active Expired - Fee Related
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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: 20140409 Termination date: 20140904 |
|
| EXPY | Termination of patent right or utility model |