CN202301277U - Multistage oil cylinder for hydraulic hoist - Google Patents
Multistage oil cylinder for hydraulic hoist Download PDFInfo
- Publication number
- CN202301277U CN202301277U CN2011204132656U CN201120413265U CN202301277U CN 202301277 U CN202301277 U CN 202301277U CN 2011204132656 U CN2011204132656 U CN 2011204132656U CN 201120413265 U CN201120413265 U CN 201120413265U CN 202301277 U CN202301277 U CN 202301277U
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- piston
- piston rod
- hole
- guide sleeve
- annular
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Abstract
The utility model discloses a multistage oil cylinder for a hydraulic hoist, relating to the field of hydraulic hoists, in particular to a structure of the oil cylinder. The multistage oil cylinder comprises a cylinder barrel, wherein the rear end of the cylinder barrel is connected with a rear cover; the front end of the cylinder barrel is provided with a connector; the front end of the cylinder barrel is connected with a first guide sleeve; a first annular piston rod and a first annular first piston are arranged in the cylinder barrel; the front end of the first piston rod is connected with a second guide sleeve; a second annular piston rod and a second annular piston are respectively arranged in the first piston rod and the first piston; the front end of the second piston rod is connected with a third guide sleeve; a third annular piston rod and a third annular piston are respectively arranged in the second piston and the second piston; the front end of the third piston rod is connected with the connector; a first working oil port and a second working oil port are formed on the connector; oil pipes are arranged in the third piston rod at intervals; and the third piston is radially provided with a third through hole, the second piston is radially provided with a second through hole, and the first piston is radially provided with a first through hole. The multistage oil cylinder disclosed by the utility model is small in installation space and is capable of realizing multistage expansion.
Description
Technical field
The utility model relates to the field of hydraulic hoist, relates in particular to the structure of oil cylinder.
Background technique
The oil cylinder of existing hydraulic hoist mainly comprises cylinder barrel, piston, piston rod, and piston is arranged in the cylinder barrel, and piston rod is set in the cylinder barrel, and the rear end of cylinder barrel connects bonnet, between the front end of cylinder barrel and the piston rod guide sleeve is set.The oil cylinder of this structure is applied on the hydraulic hoist, owing to have only one-level flexible, just needs long installing space if the hydraulic hoist stroke is long; Stroke wants the stroke that reaches certain; The length of cylinder barrel and piston rod must be long, causes mounting distance big, increased construction investment.
Summary of the invention
The purpose of the utility model is in order to overcome the deficiency of existing technology, but the hydraulic hoist multi-stage oil cylinder of the little multi-stage expansion of a kind of installing space is provided.
The purpose of the utility model is achieved in that the hydraulic hoist multi-stage oil cylinder, comprises cylinder barrel, and the rear end of cylinder barrel connects bonnet; The front end of cylinder barrel is provided with connecting head; The front end of cylinder barrel connects first guide sleeve, and annular first piston bar and annular first piston are set in the said cylinder barrel, and first piston is connected the rear end of first piston bar; The front end of first piston bar connects second guide sleeve, and second guide sleeve is set in first guide sleeve; Annular second piston rod and annular second piston are set in said first piston bar and the first piston, and second piston is connected the rear end of second piston rod, and the front end of second piston rod connects the 3rd guide sleeve, and the 3rd guide sleeve is set in second guide sleeve; Annular the 3rd piston rod and annular the 3rd piston are set in said second piston rod and second piston, and the 3rd piston is connected the rear end of the 3rd piston rod, and the 3rd piston rod is set in the 3rd guide sleeve; The front end of said the 3rd piston rod is connected with said connecting head; First actuator port and second actuator port are set on the connecting head; Oil pipe is set in the 3rd piston rod at interval; The front end of oil pipe is connected with first actuator port, is equipped with between the rear end of oil pipe and the 3rd piston, and second actuator port is connected with the cavity of the 3rd piston rod; The third through-hole that is connected with the 3rd plunger radially is set on said the 3rd piston; Second through hole radially is set on second piston; When the 3rd piston rod was withdrawn, second through hole was connected with third through-hole, and first through hole radially is set on the first piston; When second piston rod was withdrawn, first through hole was connected with second through hole.
The utility model is through above design; When the first actuator port oil-feed, the second actuator port oil return; First piston bar, second piston rod and the 3rd piston rod stretch; When the first actuator port oil return, the second actuator port oil-feed, first piston bar, second piston rod and the 3rd piston rod are withdrawn in the corresponding cavity.The utility model has solved the problem of multi-stage expansion, thereby makes the shorten length of cylinder barrel and piston rod, and promptly installing space is little.
Spacing for the withdrawal of piston rod is carried out, first hole retaining is set in the first piston of the said second piston rear side, the first card key is set in the retaining of first hole; Second hole retaining is set in second piston of said the 3rd piston rear side, the second card key is set in the retaining of second hole.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is an A portion enlarged view among Fig. 1.
Fig. 3 is a B portion enlarged view among Fig. 1.
Among the figure, 1 bonnet, 2 first pistons, 3 second pistons, 4 the 3rd pistons, 5 first through holes; 6 second through holes, 7 third through-holes, 8 cylinder barrels, 9 first piston bars, 10 second piston rods, 11 the 3rd piston rods; 12 oil pipes, 13 the 3rd guide sleeves, 14 second guide sleeves, 15 first guide sleeves, 16 first actuator ports, 17 connecting heads; 18 second actuator ports, 19 first card keys, 20 first holes retaining, 21 second card keys, 22 second holes retaining.
Embodiment
Like Fig. 1,2, shown in 3, be the hydraulic hoist multi-stage oil cylinder, comprise cylinder barrel 8; The rear end of cylinder barrel 8 connects bonnet 1; The front end of cylinder barrel 8 is provided with connecting head 17, and first actuator port 16 and second actuator port 18 are set on the connecting head 17, and the front end of cylinder barrel 8 connects first guide sleeve 15; Annular first piston bar 9 and annular first piston 2 are set in the cylinder barrel 8; First piston 2 is connected the rear end of first piston bar 9, and the front end of first piston bar 9 connects second guide sleeve, 14, the second guide sleeves 14 and is set in first guide sleeve 15.
Annular second piston rod 10 and annular second piston 3 is set in first piston bar 9 and the first piston 2; Second piston 3 is connected the rear end of second piston rod 10; The front end of second piston rod 10 connects the 3rd guide sleeve 13, the three guide sleeves 13 and is set in second guide sleeve 14.Be provided with in the first piston 2 of second piston, 3 rear sides in retaining 20, the first holes, first hole retaining 20 the first card key 19 is set.
The rear end that annular the 3rd piston rod 11 and annular the 3rd piston 4, the three pistons 4 are connected the 3rd piston rod 11 is set in second piston rod 10 and second piston 3, and the 3rd piston rod 11 is set in the 3rd guide sleeve 13.Be provided with in second piston 3 of the 3rd piston 4 rear sides in retaining 22, the second holes, second hole retaining 22 the second card key 21 is set.The front end of the 3rd piston rod 11 is connected with connecting head 17; Oil pipe 12 is set in the 3rd piston rod 11 at interval; The front end of oil pipe 12 is connected with first actuator port 16, is equipped with between the rear end of oil pipe 12 and the 3rd piston 4, and second actuator port 18 is connected with the cavity of the 3rd piston rod 11.
The third through-hole 7 that is connected with the 3rd piston rod 11 cavitys radially is set on the 3rd piston 4; Second through hole 6 radially is set on second piston 3; When 11 withdrawals of the 3rd piston rod, second through hole 6 is connected with third through-hole 7, and first through hole 5 radially is set on the first piston 2; When 10 withdrawals of second piston rod, first through hole 5 is connected with second through hole 6.
Claims (2)
1. the hydraulic hoist multi-stage oil cylinder comprises cylinder barrel, and the rear end of cylinder barrel connects bonnet; The front end of cylinder barrel is provided with connecting head; The front end of cylinder barrel connects first guide sleeve, it is characterized in that: annular first piston bar and annular first piston are set in the said cylinder barrel, and first piston is connected the rear end of first piston bar; The front end of first piston bar connects second guide sleeve, and second guide sleeve is set in first guide sleeve; Annular second piston rod and annular second piston are set in said first piston bar and the first piston, and second piston is connected the rear end of second piston rod, and the front end of second piston rod connects the 3rd guide sleeve, and the 3rd guide sleeve is set in second guide sleeve; Annular the 3rd piston rod and annular the 3rd piston are set in said second piston rod and second piston, and the 3rd piston is connected the rear end of the 3rd piston rod, and the 3rd piston rod is set in the 3rd guide sleeve; The front end of said the 3rd piston rod is connected with said connecting head; First actuator port and second actuator port are set on the connecting head; Oil pipe is set in the 3rd piston rod at interval; The front end of oil pipe is connected with first actuator port, is equipped with between the rear end of oil pipe and the 3rd piston, and second actuator port is connected with the cavity of the 3rd piston rod; The third through-hole that is connected with the 3rd plunger radially is set on said the 3rd piston; Second through hole radially is set on second piston; When the 3rd piston rod was withdrawn, second through hole was connected with third through-hole, and first through hole radially is set on the first piston; When second piston rod was withdrawn, first through hole was connected with second through hole.
2. hydraulic hoist multi-stage oil cylinder according to claim 1 is characterized in that: first hole retaining is set in the first piston of the said second piston rear side, the first card key is set in the retaining of first hole; Second hole retaining is set in second piston of said the 3rd piston rear side, the second card key is set in the retaining of second hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204132656U CN202301277U (en) | 2011-10-26 | 2011-10-26 | Multistage oil cylinder for hydraulic hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204132656U CN202301277U (en) | 2011-10-26 | 2011-10-26 | Multistage oil cylinder for hydraulic hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301277U true CN202301277U (en) | 2012-07-04 |
Family
ID=46370186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204132656U Expired - Fee Related CN202301277U (en) | 2011-10-26 | 2011-10-26 | Multistage oil cylinder for hydraulic hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301277U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878148A (en) * | 2012-09-29 | 2013-01-16 | 江苏昌力油缸有限公司 | Deflection-preventing multistage oil cylinder |
| CN103075386A (en) * | 2011-10-26 | 2013-05-01 | 潘井仁 | Multistage cylinder of hydraulic hoist |
| CN109654085A (en) * | 2018-12-29 | 2019-04-19 | 武昌船舶重工集团有限公司 | A kind of lifesaving breakout equipment cylinder and its application |
-
2011
- 2011-10-26 CN CN2011204132656U patent/CN202301277U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075386A (en) * | 2011-10-26 | 2013-05-01 | 潘井仁 | Multistage cylinder of hydraulic hoist |
| CN102878148A (en) * | 2012-09-29 | 2013-01-16 | 江苏昌力油缸有限公司 | Deflection-preventing multistage oil cylinder |
| CN102878148B (en) * | 2012-09-29 | 2015-05-06 | 江苏昌力油缸有限公司 | Deflection-preventing multistage oil cylinder |
| CN109654085A (en) * | 2018-12-29 | 2019-04-19 | 武昌船舶重工集团有限公司 | A kind of lifesaving breakout equipment cylinder and its application |
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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: 20120704 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |