CN203214485U - High-speed return-stroke anti-collision buffering system for hydraulic cylinder - Google Patents
High-speed return-stroke anti-collision buffering system for hydraulic cylinder Download PDFInfo
- Publication number
- CN203214485U CN203214485U CN 201320101439 CN201320101439U CN203214485U CN 203214485 U CN203214485 U CN 203214485U CN 201320101439 CN201320101439 CN 201320101439 CN 201320101439 U CN201320101439 U CN 201320101439U CN 203214485 U CN203214485 U CN 203214485U
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- China
- Prior art keywords
- oil
- hydraulic cylinder
- oil pump
- frequency motor
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a high-speed return-stroke anti-collision buffering system for a hydraulic cylinder. The high-speed return-stroke anti-collision buffering system comprises a first oil tank, a second oil tank, a filter, an oil pump, a throttle valve, an overflow valve, the hydraulic cylinder, a travel switch, a variable-frequency motor and a controller. The filter, the oil pump and the throttle valve are sequentially connected between the first oil tank and an oil inlet of the hydraulic cylinder, one route of the second oil tank is connected with an oil outlet of the hydraulic cylinder, and the other route of the second oil tank is sequentially connected with the overflow valve and an oil outlet of the oil pump. The travel switch is arranged on a return cavity cylinder barrel of the hydraulic cylinder, the circuit end of the travel switch is connected with a controller which is connected with the variable-frequency motor, and the variable-frequency motor is fixedly connected with the oil pump. According to the high-speed return-stroke anti-collision buffering system, when the return stroke a piston of the hydraulic cylinder is close to a cylinder cover, oil inlet pressure is reduced to zero immediately through operation stop of the oil pump, and therefore the piston is forced to stop and prevented from colliding the cylinder cover, and braking is sensitive, fast and stable.
Description
Technical field
The utility model relates to a kind of buffer system, particularly a kind of oil hydraulic cylinder crashproof buffer system of high speed backhaul.
Background technique
Oil hydraulic cylinder is as a kind of hydraulic actuator, require it to have to start rapidly, braking is sensitive, characteristic such as stable at work, usually, stability when the drive workpiece moves when the speed when oil hydraulic cylinder starts and work all can be by the pressure control of hydraulic oil, but when needing braking, particularly move to end of travel in backward stroke of the piston, because the piston in the cylinder body can not observe directly, when speed is very high, cylinder cap be will clash into, hydraulic shock and noise caused, even the phenomenon of damaging.For this reason, need often damping device need be set in the environment of oil hydraulic cylinder high speed operation at some, but be by increasing back oil cavity pressure in the method for usefulness generally, thereby force piston to slow down, need long buffer area sometimes for this reason, braking effect is bad.
The model utility content
For solving the problems of the technologies described above, the utility model provides a kind of braking sensitive, the oil hydraulic cylinder crashproof buffer system of high speed backhaul that required buffer area is short.
For achieving the above object, the technical solution of the utility model is: a kind of oil hydraulic cylinder comprises first fuel tank, second fuel tank, filter, oil pump, throttle valve, relief valve, oil hydraulic cylinder, position limit switch, adjustable frequency motor, controller with the crashproof buffer system of high speed backhaul; Be connected with filter, oil pump and throttle valve between the filler opening in first fuel tank and the oil hydraulic cylinder in turn, second fuel tank one tunnel links to each other with oil outlet in the oil hydraulic cylinder, another road connects the oil outlet of relief valve, oil pump successively, position limit switch is located on the migration chamber cylinder barrel of oil hydraulic cylinder, the position limit switch circuit end links to each other with controller, controller is connected with adjustable frequency motor, and adjustable frequency motor is fixedlyed connected with oil pump.
The beneficial effects of the utility model are: when the hydraulic cylinder piston backhaul approaches to cylinder cap, shut down by controlling oil pump, make oil-feed press moment to reduce to zero, thereby force piston to stop, preventing from clashing into cylinder cap, its braking is sensitive, quick, stable.
Description of drawings
Fig. 1 is schematic representation of the present utility model.
Among the figure: first fuel tank 11, second fuel tank 12, filter 2, oil pump 3, oil pump oil outlet 31,
Throttle valve 4, relief valve 5, oil hydraulic cylinder 6, filler opening 61, oil outlet 62, migration chamber cylinder barrel 63, position limit switch 7, adjustable frequency motor 8, controller 9.
Embodiment
Below in conjunction with accompanying drawing, and in conjunction with the embodiments, the utility model is described further.
Embodiment:
As shown in Figure 1, a kind of oil hydraulic cylinder comprises first fuel tank 11, second fuel tank 12, filter 2, oil pump 3, throttle valve 4, relief valve 5, oil hydraulic cylinder 6, position limit switch 7, adjustable frequency motor 8, controller 9 with the crashproof buffer system of high speed backhaul; Be connected with filter 2, oil pump 3 and throttle valve 4 between the filler opening 61 in first fuel tank 11 and the oil hydraulic cylinder 6 in turn, second fuel tank 12 one tunnel links to each other with oil outlet 62 in the oil hydraulic cylinder 6, another road connects the oil outlet 31 of relief valve 5, oil pump 3 successively, position limit switch 7 is located on the migration chamber cylinder barrel 63 of oil hydraulic cylinder 6, position limit switch 7 circuit end link to each other with controller 9, controller 9 is connected with adjustable frequency motor 8, and adjustable frequency motor 8 is fixedlyed connected with oil pump 3.
Working principle of the present utility model is: during oil hydraulic cylinder 6 backwards stroke of the piston, oil pump 3 starts, and hydraulic oil enters to the filler opening 61 of oil hydraulic cylinder 6 by throttle valve 4, and throttle valve 4 has wherein been controlled the flow that hydraulic oil enters, guarantee certain pressure, thereby made oil hydraulic cylinder 6 backwards stroke of the piston remain a constant speed.When the flow of oil pump 3 during greater than oil hydraulic cylinder 6 required flows, unnecessary hydraulic oil flows back into second fuel tank 12 by relief valve 5., contact with position limit switch 7, at this moment when terminal near cylinder cap in oil hydraulic cylinder 6 backwards stroke of the piston, position limit switch 7 passes to controller 9 to signal, and controller 9 control adjustable frequency motors 8 stop operating, at this moment, oil pump 3 is also corresponding to have stopped work, oil-feed presses moment to reduce to zero, and in the oil back chamber because the existence of a certain amount of hydraulic oil is arranged, have certain pressure, though oil hydraulic cylinder 6 pistons are subjected to effect of inertia, also have certain speed, but differing under the very big pressure action, under very little buffer distance, can stop.
Claims (1)
1. an oil hydraulic cylinder is characterized in that: comprise first fuel tank (11), second fuel tank (12), filter (2), oil pump (3), throttle valve (4), relief valve (5), oil hydraulic cylinder (6), position limit switch (7), adjustable frequency motor (8), controller (9) with the crashproof buffer system of high speed backhaul; Be connected with filter (2) in turn between the filler opening (61) in described first fuel tank (11) and the oil hydraulic cylinder (6), oil pump (3) and throttle valve (4), described second fuel tank (12) a tunnel links to each other with oil outlet (62) in the oil hydraulic cylinder (6), another road connects relief valve (5) successively, the oil outlet (31) of oil pump (3), position limit switch (7) is located on the migration chamber cylinder barrel (63) of oil hydraulic cylinder (6), described position limit switch (7) circuit end links to each other with controller (9), described controller (9) is connected with adjustable frequency motor (8), and described adjustable frequency motor (8) is fixedlyed connected with oil pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101439 CN203214485U (en) | 2013-03-06 | 2013-03-06 | High-speed return-stroke anti-collision buffering system for hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101439 CN203214485U (en) | 2013-03-06 | 2013-03-06 | High-speed return-stroke anti-collision buffering system for hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214485U true CN203214485U (en) | 2013-09-25 |
Family
ID=49204029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320101439 Expired - Fee Related CN203214485U (en) | 2013-03-06 | 2013-03-06 | High-speed return-stroke anti-collision buffering system for hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214485U (en) |
-
2013
- 2013-03-06 CN CN 201320101439 patent/CN203214485U/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: 20130925 Termination date: 20140306 |