CN205533523U - Two effect pneumatic cylinders of single pole - Google Patents

Two effect pneumatic cylinders of single pole Download PDF

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Publication number
CN205533523U
CN205533523U CN201620096724.5U CN201620096724U CN205533523U CN 205533523 U CN205533523 U CN 205533523U CN 201620096724 U CN201620096724 U CN 201620096724U CN 205533523 U CN205533523 U CN 205533523U
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CN
China
Prior art keywords
cylinder
cylinder body
joint
piston rod
blind hole
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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
Application number
CN201620096724.5U
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Chinese (zh)
Inventor
杨友胜
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杨友胜
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Priority to CN201620096724.5U priority Critical patent/CN205533523U/en
Application granted granted Critical
Publication of CN205533523U publication Critical patent/CN205533523U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a two effect pneumatic cylinders of single pole, this pneumatic cylinder include the cylinder body, and the both ends of cylinder body respectively set up a joint, set up the hydraulic fluid port in the joint, set up the cylinder in the cylinder body, set up piston and the piston rod that links together in the cylinder, set up the cavity blind hole in the piston rod, stretch into in the blind hole with cylinder body fixed connection's compensation bar, set up the through -hole in the compensation bar to the sectional area of piston subtracts the annular withdrawal working face area A2 that the sectional area obtained who deactivates the cock stem and equals the sectional area A1 that the compensation bar stretched into the blind hole part. The utility model discloses a two effect pneumatic cylinders of single pole as long as stretch out the area of working face equal the to withdraw area of working face, just can guarantee to get into and the flow of outflow hydraulic pressure jar and reciprocal power output is equal totally down in the effect of the same pressure, stretches out when both having solved among the prior art single extension bar pneumatic cylinder reciprocating motion and the unequal problem of area of withdrawing, has solved the big problem of two extension bar pneumatic cylinder axial dimensions again.

Description

A kind of single pole double acting hydraulic cylinder
Technical field
This utility model belongs to Hydraulic Elements field, particularly to a kind of single pole double acting hydraulic cylinder in this field.
Background technology
Hydraulic cylinder, because the advantage such as simple in construction, reliable operation, High power output, response be fast, has a wide range of applications in fields such as engineer equipment, transportation, marine settings.Common reciprocating linear type double acting hydraulic cylinder has and singly stretches out rod-type such as Fig. 1 a and double stretch out rod-type such as Fig. 1 b.
Singly stretching out rod-type hydraulic cylinder feature is to extend and retract effective active area, enters and effluent cylinder pressure flow;Under uniform pressure effect, when extending and retracting, power output is also.When double extension bar hydraulic cylinder features are to move back and forth, reciprocal power output under effective active area, entrance and the flow of effluent cylinder pressure and uniform pressure effect is the most equal, but under identical stroke, at least one stroke big of the more single extension bar in space hydraulic cylinder shared by double extension bar hydraulic cylinders.
For special application, such as electro-hydraulic actuator (a kind of Hydraulic Elements being integrated with conventional func, including motor, two-way pump, valve group, fuel tank and the actuator of double acting executive component, feature is that power density is big, lightweight, noise is low, volume little), according to single extension bar hydraulic cylinder of the prior art, though axial space size can effectively be reduced, but need relatively large tank oil storage, required fluid volume differences during to store or to supplement because stretching out and retracting;According to of the prior art pair of extension bar hydraulic cylinder, though storing fluid without fuel tank or only needing the least fuel tank to store fluid (with supplementary leakage), but its axial space size is big, single extension bar hydraulic cylinder the most of the prior art or double extension bar hydraulic cylinder, be not the most well positioned to meet use needs.
Utility model content
Technical problem to be solved in the utility model be just to provide a kind of enter with outflow cylinder flow equal, under uniform pressure effect, stretch out the single pole double acting hydraulic cylinder equal with retraction power output.
This utility model adopts the following technical scheme that
A kind of single pole double acting hydraulic cylinder, it thes improvement is that: described hydraulic cylinder includes cylinder body, and the two ends of cylinder body respectively arrange a joint, arrange hydraulic fluid port in joint;Arranging cylinder barrel in cylinder body, arrange the piston linked together and piston rod in cylinder barrel, the side of piston rod is stretched out outside cylinder barrel and through fixing the right end cap being connected with cylinder body, and the joint hydraulic fluid port of right end cap side connects with space in cylinder barrel;Arranging hollow blind hole in piston rod, stretch into and fix the compensation bar being connected with cylinder body, arrange through hole in described compensation bar in blind hole, one end of this through hole communicates with the blind hole in piston rod, and the other end communicates with the joint hydraulic fluid port compensating bar side;And the sectional area of piston deducts the annular retractile action face area A obtained by the sectional area of piston rod2The sectional area A of blind hole part is stretched into equal to compensation bar1
Further, described compensation bar also setting up plural steam vent, this steam vent side communicates with the external world, and opposite side communicates with piston.
Further, it is provided with sealing member between described end cap and cylinder body.
Further, it is provided with securing member between described joint and cylinder body.
The beneficial effects of the utility model are:
Single pole double acting hydraulic cylinder disclosed in the utility model, as long as stretching out the area area equal to retractile action face of acting surface, ensure that entrance and the flow of effluent cylinder pressure and under uniform pressure effect reciprocal power output essentially equal, both solve single extension bar hydraulic cylinder in prior art and when moving back and forth, extended and retracted the problem that area does not waits, solve again the problem that double extension bar hydraulic cylinder axial dimension is big.It is particularly suitable for some limited spaces, but integrated hydraulic system is had the occasion of volume requirement, such as the electro-hydraulic actuator used in aircraft and submarine etc..
Accompanying drawing explanation
Fig. 1 is the principle schematic of double acting hydraulic cylinder in prior art, and wherein Fig. 1 a is for singly stretching out rod-type, and Fig. 1 b stretches out rod-type for double;
Fig. 2 is the left surface schematic diagram of the single pole double acting hydraulic cylinder disclosed in this utility model embodiment 1;
Fig. 3 is the structural representation of the single pole double acting hydraulic cylinder disclosed in this utility model embodiment 1.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, this utility model is further elaborated.Should be appreciated that instantiation described herein, only in order to explain this utility model, is not used to limit this utility model.
Embodiment 1, as shown in Figures 2 and 3, present embodiment discloses a kind of single pole double acting hydraulic cylinder, and described hydraulic cylinder includes that cylinder body 1, the two ends of cylinder body 1 respectively arrange a joint 2, arranges hydraulic fluid port 3 in joint 2;Arranging cylinder barrel 4 in cylinder body 1, arrange the piston 5 linked together and piston rod 6 in cylinder barrel, the side of piston rod 6 is stretched out outside cylinder barrel and through fixing the right end cap 7 being connected with cylinder body, and the joint hydraulic fluid port 3 of right end cap side connects with space in cylinder barrel 4;Arranging hollow blind hole in piston rod 6, stretch into and fix the compensation bar 8 being connected with cylinder body, arrange through hole 9 in described compensation bar 8 in blind hole, one end of this through hole 9 communicates with the blind hole in piston rod, and the other end communicates with the joint hydraulic fluid port 3 compensating bar side;And the sectional area of piston deducts the annular retractile action face area A obtained by the sectional area of piston rod2The sectional area A of blind hole part is stretched into equal to compensation bar1
The area A in retractile action face2=π/4* (D1 2-D2 2), wherein D1 is the piston 5 diameter of section at vertical direction, and D2 is the piston rod 6 diameter of section at vertical direction;
Stretch out the area A of acting surface1=π/4*d2, wherein d is to compensate bar 8 to stretch into the part diameter of section at vertical direction of blind hole.
Also setting up plural steam vent 10 on described compensation bar, this steam vent side communicates with the external world, and opposite side communicates with piston.It is provided with sealing member between described end cap and cylinder body.It is provided with securing member between described joint and cylinder body.
The work process of the single pole double acting hydraulic cylinder disclosed in the present embodiment is: according to requirements, design stretch out acting surface and the size in retractile action face so that enter and the flow of effluent cylinder pressure and under uniform pressure effect reciprocal power output reach design requirement.When piston rod stretches out, reduced space between piston and end cap, blind hole and the space compensated between bar increase, owing to the area in retractile action face is equal to stretch out the area of acting surface, from the flow of the joint hydraulic fluid port effluent oil of right end cap side equal to the flow flowing into oil from the joint hydraulic fluid port compensating bar side.When piston rod is retracted, the space between piston and right end cap increases, and blind hole and the space compensated between bar reduce, due to the area A in retractile action face2Equal to the area A stretching out acting surface1The flow of oil is flowed into equal to the flow from the joint hydraulic fluid port effluent oil compensating bar side from the joint hydraulic fluid port of end cover side, thus ensure when piston rod stretches out or retracts, under uniform pressure effect, reciprocal power output is essentially equal, both solve single extension bar hydraulic cylinder in prior art and when moving back and forth, extended and retracted the problem that area does not waits, solve again the problem that double extension bar hydraulic cylinder axial dimension is big.

Claims (4)

1. a single pole double acting hydraulic cylinder, it is characterised in that: described hydraulic cylinder includes cylinder body, and the two ends of cylinder body respectively arrange a joint, arrange hydraulic fluid port in joint;Arranging cylinder barrel in cylinder body, arrange the piston linked together and piston rod in cylinder barrel, the side of piston rod is stretched out outside cylinder barrel and through fixing the right end cap being connected with cylinder body, and the joint hydraulic fluid port of right end cap side connects with space in cylinder barrel;Arranging hollow blind hole in piston rod, stretch into and fix the compensation bar being connected with cylinder body, arrange through hole in described compensation bar in blind hole, one end of this through hole communicates with the blind hole in piston rod, and the other end communicates with the joint hydraulic fluid port compensating bar side;And the sectional area of piston deducts the annular retractile action face area A obtained by the sectional area of piston rod2The sectional area A of blind hole part is stretched into equal to compensation bar1
Single pole double acting hydraulic cylinder the most according to claim 1, it is characterised in that: also setting up plural steam vent on described compensation bar, this steam vent side communicates with the external world, and opposite side communicates with piston.
Single pole double acting hydraulic cylinder the most according to claim 1, it is characterised in that: it is provided with sealing member between described end cap and cylinder body.
Single pole double acting hydraulic cylinder the most according to claim 1, it is characterised in that: it is provided with securing member between described joint and cylinder body.
CN201620096724.5U 2016-01-29 2016-01-29 Two effect pneumatic cylinders of single pole Expired - Fee Related CN205533523U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620096724.5U CN205533523U (en) 2016-01-29 2016-01-29 Two effect pneumatic cylinders of single pole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620096724.5U CN205533523U (en) 2016-01-29 2016-01-29 Two effect pneumatic cylinders of single pole

Publications (1)

Publication Number Publication Date
CN205533523U true CN205533523U (en) 2016-08-31

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Family Applications (1)

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CN201620096724.5U Expired - Fee Related CN205533523U (en) 2016-01-29 2016-01-29 Two effect pneumatic cylinders of single pole

Country Status (1)

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CN (1) CN205533523U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105605027A (en) * 2016-01-29 2016-05-25 杨友胜 Single-rod double-acting hydraulic cylinder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105605027A (en) * 2016-01-29 2016-05-25 杨友胜 Single-rod double-acting hydraulic cylinder

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160831

Termination date: 20190129