CN202833411U - Double-acting telescopic hydraulic cylinder - Google Patents
Double-acting telescopic hydraulic cylinder Download PDFInfo
- Publication number
- CN202833411U CN202833411U CN 201220411279 CN201220411279U CN202833411U CN 202833411 U CN202833411 U CN 202833411U CN 201220411279 CN201220411279 CN 201220411279 CN 201220411279 U CN201220411279 U CN 201220411279U CN 202833411 U CN202833411 U CN 202833411U
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- piston rod
- cylinder body
- cylinder
- piston
- double
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Abstract
The utility model discloses a double-acting telescopic hydraulic cylinder which comprises a cylinder body, the cylinder body is provided with an oil inlet at the bottom, a piston rod with a piston at the end is slidingly arranged inside the cylinder body. The other end of the piston rod is connected with a lug, a guide sleeve is arranged between the piston rod and the inner wall of the front end of the cylinder body, and the guide sleeve, the inner wall of the cylinder body and the piston rod are slidingly connected with each other through a YX-type seal ring, a G-type seal ring a dustproof ring seal. The outer wall of the piston is provided with a plurality of annular grooves which are provided with sliding ring type combined seals and support rings inside. Due to the fact that the cylinder pistons at all levels utilize the advanced sliding ring type combined seal, the double-acting telescopic hydraulics cylinder has an excellent sealing performance and avoids the inner leakage of the hydraulics cylinder. Besides, the end of the piston rod adopts a dual-seal device of the YX-type seal ring and the G-type seal ring to avoid the outer leakage of the hydraulics cylinder.
Description
Technical field
The utility model relates to the oil cylinder field, and concrete is a kind of double-action telescopic hydraulic cylinder.
Background technique
The single-action telescopic oil hydraulic cylinder is widely used in heavy duty dump truck (people are referred to as dump car usually) tilting mechanism by the Multi-stage cylinder that the multi-stage sleeve shrinking structure forms, and is the important executive component of its tilting mechanism.
Its principle is that the powerful thrust by hydraulic pressure is that the weight jacking is angle to certain height with the compartment, cargo dumping; The hand-operated direction valve commutation, the compartment resets naturally by its deadweight decline.This resets for compartment in the heavy-duty car tilting mechanism is thing very easily.
But for medium and small, light type agricultural vehicle particularly, because the work under bad environment of vehicle, be that the hinge point of earrings is unlubricated and dry friction or serious corrosion occur before and after the oil hydraulic cylinder such as the compartment, because the compartment own wt is lighter, effect was not very good when the single-action telescopic oil hydraulic cylinder often resetted in the compartment, sometimes hand-operated direction valve commutation, ineffective or the compartment of empty wagons homing action not exclusively resets, and sometimes the driver has to draw that the compartment could reset at last fully by hand.
The model utility content
The utility model provides a kind of double-action hydraulic jack that stretches, and for not too large medium and small of tonnage, particularly the compartment resets in the light type agricultural automobile overturning mechanism, and the driver uses handy.
The technical solution of the utility model:
The double-action telescopic hydraulic cylinder, comprise cylinder body, the bottom of cylinder body is provided with filler opening, be slidingly fitted with the piston of piston rod and its end in the cylinder body, the other end of piston rod is connected with earrings, it is characterized in that: between described piston rod and the cylinder body front inner wall guide sleeve is installed, is dynamically connected by Yx RunddichtringO, G RunddichtringO and dust ring sealed sliding between the inwall of guide sleeve and cylinder body and the piston rod; Have some annular grooves on the outer wall of described piston, be provided with slip ring combination seal, support ring in the groove.
Described double-action telescopic hydraulic cylinder is characterized in that: described piston rod is multi-layer structure, and the end that every one deck piston rod is positioned at cylinder interior all is equipped with piston, and the cooperation that slides over each other of each piston.
Advantage of the present utility model:
This piston that installs every first-stage cylinder all adopts advanced slip ring combination seal, has very good sealability, guarantees the oil hydraulic cylinder non-internal leakage, and tailpiece of the piston rod adopts Yx RunddichtringO and G RunddichtringO double sealing device, guarantees that oil hydraulic cylinder is without leaking outside.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, the double-action telescopic hydraulic cylinder, comprise cylinder body 1, the bottom of cylinder body 1 is provided with filler opening 2, be slidingly fitted with the piston 4 of piston rod 3 and its end in the cylinder body 1, the other end of piston rod 3 is connected with earrings 5, between piston rod 3 and cylinder body 1 front inner wall guide sleeve 6 is installed, and is dynamically connected by Yx RunddichtringO 7, G RunddichtringO 8 and dust ring 9 sealed sliding between the inwall of guide sleeve 6 and cylinder body 1 and the piston rod 2; Have some annular grooves on the outer wall of piston 4, be provided with slip ring combination seal 10, support ring 11 in the groove.
Piston rod 3 is multi-layer structure, and the end that every one deck piston rod 3 is positioned at cylinder body 1 inside all is equipped with piston 4, and the cooperation that slides over each other of each piston 4.
Claims (2)
1. double-action telescopic hydraulic cylinder, comprise cylinder body, the bottom of cylinder body is provided with filler opening, be slidingly fitted with the piston of piston rod and its end in the cylinder body, the other end of piston rod is connected with earrings, it is characterized in that: between described piston rod and the cylinder body front inner wall guide sleeve is installed, is dynamically connected by Yx RunddichtringO, G RunddichtringO and dust ring sealed sliding between the inwall of guide sleeve and cylinder body and the piston rod; Have some annular grooves on the outer wall of described piston, be provided with slip ring combination seal, support ring in the groove.
2. double-action telescopic hydraulic cylinder according to claim 1, it is characterized in that: described piston rod is multi-layer structure, the end that every one deck piston rod is positioned at cylinder interior all is equipped with piston, and the cooperation that slides over each other of each piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411279 CN202833411U (en) | 2012-08-17 | 2012-08-17 | Double-acting telescopic hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411279 CN202833411U (en) | 2012-08-17 | 2012-08-17 | Double-acting telescopic hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202833411U true CN202833411U (en) | 2013-03-27 |
Family
ID=47945126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220411279 Expired - Fee Related CN202833411U (en) | 2012-08-17 | 2012-08-17 | Double-acting telescopic hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202833411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020194A (en) * | 2015-08-14 | 2015-11-04 | 苏州科润织造有限公司 | Telescopic hydraulic cylinder for spinning |
| WO2023128899A1 (en) | 2021-12-30 | 2023-07-06 | Kastaş Sizdirmazlik Teknoloji̇leri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | A sealing set |
-
2012
- 2012-08-17 CN CN 201220411279 patent/CN202833411U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020194A (en) * | 2015-08-14 | 2015-11-04 | 苏州科润织造有限公司 | Telescopic hydraulic cylinder for spinning |
| WO2023128899A1 (en) | 2021-12-30 | 2023-07-06 | Kastaş Sizdirmazlik Teknoloji̇leri̇ Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | A sealing set |
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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: 20130327 Termination date: 20140817 |
|
| EXPY | Termination of patent right or utility model |