CN103821791A - Novel hydraulic oil cylinder - Google Patents

Novel hydraulic oil cylinder Download PDF

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Publication number
CN103821791A
CN103821791A CN201410094124.0A CN201410094124A CN103821791A CN 103821791 A CN103821791 A CN 103821791A CN 201410094124 A CN201410094124 A CN 201410094124A CN 103821791 A CN103821791 A CN 103821791A
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CN
China
Prior art keywords
valve
piston
rod
cylinder
spring
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.)
Pending
Application number
CN201410094124.0A
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Chinese (zh)
Inventor
郑敏
Original Assignee
郑敏
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 郑敏 filed Critical 郑敏
Priority to CN201410094124.0A priority Critical patent/CN103821791A/en
Publication of CN103821791A publication Critical patent/CN103821791A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a novel hydraulic oil cylinder, which comprises a cylinder body, a front end cover, a rear end cover, a piston and a piston rod, wherein the front end of the piston rod is step-shaped; the end surface of the front end of the piston rod is provided with a threaded hole; the piston is sleeved on the front end of the piston rod, and is fixed with the threaded hole by virtue of a matched bolt; the rear end cover is fixedly provided with an exhaust valve; the exhaust valve is provided with a channel communicated with the cylinder body; the exhaust valve comprises a valve, a spring, a valve casing and a valve body; the valve body is provided with an inner hole; the valve casing is embedded into one end of the inner hole of the valve body; one end of a valve rod is provided with a spring seat, and is connected with the valve by virtue of the spring seat; the spring is sheathed on the valve rod and the spring seat and is arranged in the valve casing; the other end of the valve rod penetrates through the valve casing and is provided with a limiting block. In the gas release process of the hydraulic oil cylinder, only one person is needed for the whole gas release process, labor force is reduced, simple, convenient, reliable and fast effects are realized, and gas release is clean and thorough.

Description

A kind of Novel hydraulic cylinder
Technical field
The present invention relates to a kind of Novel hydraulic cylinder.
Background technique
Hydraulic jack is the actuator in hydraulic system, generally formed by cylinder body, front cover, rear end cover, piston and piston rod, because the compression ratio of liquid is very little, so in the time of one of them oilhole oil-feed, piston will be pushed and make another oilhole fuel-displaced, piston driving piston rod do stretch out, retraction movement, otherwise still.In hydraulic transmission, its actuator is generally hydraulic jack or oil hydraulic motor, hydraulic energy is converted to mechanical energy, when hydraulic energy being converted to machinery swing or reversing power for needs, often needs to adopt hydraulic jack to realize by corresponding mechanical structure.In prior art, the piston of oil cylinder generally adopts FERRULETYPE to be connected with the Placement of piston rod, and this Placement exists number of drawbacks, and in use, cutting ferrule very easily causes fracture due to overtired to oil cylinder, affects the overall work life-span of oil cylinder; Employing FERRULETYPE connects, and it is unreliable to connect, and cutting ferrule cannot meet the requirement of large pulling force, easily occurs in the course of the work the tired strain phenomenon that waits; Employing FERRULETYPE connects, and its sealability is poor; Hydraulic jack, in the time starting to access oil circuit, has air in general cylinder body, directly connected pipes, and the air in cylinder body can be sneaked in hydraulic oil, affects the service behaviour of hydraulic system.
Summary of the invention
The invention provides a kind of Novel hydraulic cylinder, be convenient to cylinder to carry out exhaust.
The technical solution adopted in the present invention is to achieve the above object of the invention: a kind of Novel hydraulic cylinder, comprise cylinder body, front cover, rear end cover, piston and piston rod, the front end of described piston rod is stepped, the front end end face of piston rod is provided with tapped hole, piston sleeve is connected on piston rod front end, and bolt and tapped hole by coupling are fixed, and fix an outlet valve on described rear end cover, and outlet valve is provided with a passage and communicates with cylinder body;
Described outlet valve comprises valve, spring, valve casing and valve body, described valve body is with endoporus, valve casing is embedded in valve body inner bore one end, one end of valve rod is provided with spring seat, by spring seat connection valve, spring housing is contained on valve rod and spring seat and is placed in valve casing, and the valve rod the other end is provided with limiting stopper through valve casing.
Further, described piston face is provided with annular seal groove, is provided with seal ring in seal groove, and the inner circumference of seal ring and described cylinder body is sealed and matched.
Further, the inner peripheral surface of described end cap is provided with groove, is provided with sealing gasket in groove, and sealing gasket coordinates with described rod seal.
Further, described outlet valve coordinates with rear end cover is inserted.
Further, described spring is tower spring.
The invention has the beneficial effects as follows: the piston of this oil cylinder is connected with piston rod high strength, connect more reliable, there will not be the phenomenon that causes rod fracture because of overtired, piston rod and piston are bolted, can transmit larger pulling force, but in work engineering, be not prone to the tired strain phenomenon that waits, increased the working life of piston, and good sealing effect; Rear end cover is provided with outlet valve, can discharge the air in cylinder body, prevents from affecting the service behaviour of oil cylinder.
In this practical hydraulic jack deflation course, only need a people can complete whole deflation course, reduce manpower, simple, convenient, and reliable, quick, discharge gas is totally thorough.
Accompanying drawing explanation
Fig. 1 is the structural representation of hydraulic jack;
Fig. 2 is the structural representation of outlet valve.
Wherein, 1, rear end cover; 2, cylinder body; 3, piston; 4, bolt; 5, piston rod; 6, passage; 7, outlet valve, 71, valve, 72, spring, 73, valve body, 74, spring seat, 75, limiting stopper.
 
Embodiment
As shown in Figure 1, a kind of Novel hydraulic cylinder, comprise cylinder body 2, front cover, rear end cover 1, piston 3 and piston rod 5, the front end of piston rod 5 is stepped, the front end end face of piston rod 5 is provided with tapped hole, and piston 3 is socketed in piston rod 5 front ends, and fixes by bolt and the tapped hole of coupling, on rear end cover 1, fix an outlet valve 7, outlet valve 7 is provided with a passage 6 and communicates with cylinder body 2.
As shown in Figure 2, outlet valve 7 comprises valve 71, spring 72, valve casing and valve body 73, valve body 73 is with endoporus, valve casing is embedded in valve body 73 endoporus one end, one end of valve rod is provided with spring seat 74, by spring seat 74 connection valves, spring 72 is sleeved on valve rod and spring seat 74 and is placed in valve casing, and the valve rod the other end is provided with limiting stopper 75 through valve casing.
Piston 3 surfaces are provided with annular seal groove, are provided with seal ring in seal groove, and the inner circumference of seal ring and described cylinder body 2 is sealed and matched.
The inner peripheral surface of end cap is provided with groove, is provided with sealing gasket in groove, and sealing gasket and described piston rod 5 are sealed and matched.Outlet valve 7 coordinates with rear end cover 1 is inserted.Spring 72 is tower spring.
The piston 3 of this oil cylinder is connected with piston rod 5 high strength, connect more reliable, there will not be the phenomenon that causes piston rod 5 to rupture because of overtired, piston rod 5 is bolted with piston 3, can transmit larger pulling force, but in work engineering, be not prone to the tired strain phenomenon that waits, increased the working life of piston 3, and good sealing effect; Rear end cover 1 is provided with outlet valve 7, can discharge the air in cylinder body 2, prevents from affecting the service behaviour of oil cylinder.
In this practical hydraulic jack deflation course, only need a people can complete whole deflation course, reduce manpower, simple, convenient, and reliable, quick, discharge gas is totally thorough.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technician in the art on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should fall within the scope of protection of the present invention under this invention's idea.

Claims (5)

1. a Novel hydraulic cylinder, it is characterized in that, comprise cylinder body, front cover, rear end cover, piston and piston rod, the front end of described piston rod is stepped, the front end end face of piston rod is provided with tapped hole, and piston sleeve is connected on piston rod front end, and fixes by bolt and the tapped hole of coupling, on described rear end cover, fix an outlet valve, outlet valve is provided with a passage and communicates with cylinder body;
Described outlet valve comprises valve, spring, valve casing and valve body, described valve body is with endoporus, valve casing is embedded in valve body inner bore one end, one end of valve rod is provided with spring seat, by spring seat connection valve, spring housing is contained on valve rod and spring seat and is placed in valve casing, and the valve rod the other end is provided with limiting stopper through valve casing.
2. a kind of Novel hydraulic cylinder according to claim 1, is characterized in that, described piston face is provided with annular seal groove, is provided with seal ring in seal groove, and the inner circumference of seal ring and described cylinder body is sealed and matched.
3. a kind of Novel hydraulic cylinder according to claim 1, is characterized in that, the inner peripheral surface of described end cap is provided with groove, is provided with sealing gasket in groove, and sealing gasket coordinates with described rod seal.
4. a kind of Novel hydraulic cylinder according to claim 1, is characterized in that, described outlet valve coordinates with rear end cover is inserted.
5. a kind of Novel hydraulic cylinder according to claim 1, is characterized in that, described spring is tower spring.
CN201410094124.0A 2014-03-14 2014-03-14 Novel hydraulic oil cylinder Pending CN103821791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410094124.0A CN103821791A (en) 2014-03-14 2014-03-14 Novel hydraulic oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410094124.0A CN103821791A (en) 2014-03-14 2014-03-14 Novel hydraulic oil cylinder

Publications (1)

Publication Number Publication Date
CN103821791A true CN103821791A (en) 2014-05-28

Family

ID=50757018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410094124.0A Pending CN103821791A (en) 2014-03-14 2014-03-14 Novel hydraulic oil cylinder

Country Status (1)

Country Link
CN (1) CN103821791A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628307A (en) * 2015-12-24 2016-06-01 江苏金通灵流体机械科技股份有限公司 External circle sealing device used for sealing of baffle plate and baffle plate thereof
CN110575660A (en) * 2019-09-12 2019-12-17 温州职业技术学院 Inflatable martial arts training device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128511A (en) * 1982-01-22 1983-08-01 Shin Meiwa Ind Co Ltd Hydraulic cylinder
CN201747693U (en) * 2010-07-16 2011-02-16 江苏龙城洪力液压设备有限公司 Hydraulic cylinder with buffer function
CN202152771U (en) * 2011-08-02 2012-02-29 成都酷玩网络科技有限公司 Hydraulic cylinder
CN203094045U (en) * 2013-02-06 2013-07-31 李庆军 Air bleeding device for automobile hydraulic brake and clutch system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128511A (en) * 1982-01-22 1983-08-01 Shin Meiwa Ind Co Ltd Hydraulic cylinder
CN201747693U (en) * 2010-07-16 2011-02-16 江苏龙城洪力液压设备有限公司 Hydraulic cylinder with buffer function
CN202152771U (en) * 2011-08-02 2012-02-29 成都酷玩网络科技有限公司 Hydraulic cylinder
CN203094045U (en) * 2013-02-06 2013-07-31 李庆军 Air bleeding device for automobile hydraulic brake and clutch system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105628307A (en) * 2015-12-24 2016-06-01 江苏金通灵流体机械科技股份有限公司 External circle sealing device used for sealing of baffle plate and baffle plate thereof
CN110575660A (en) * 2019-09-12 2019-12-17 温州职业技术学院 Inflatable martial arts training device

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Application publication date: 20140528