CN109322871A - A kind of hydraulic cylinder that can automatically reset - Google Patents
A kind of hydraulic cylinder that can automatically reset Download PDFInfo
- Publication number
- CN109322871A CN109322871A CN201811456572.5A CN201811456572A CN109322871A CN 109322871 A CN109322871 A CN 109322871A CN 201811456572 A CN201811456572 A CN 201811456572A CN 109322871 A CN109322871 A CN 109322871A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- plunger
- hydraulic cylinder
- cylinder body
- automatically reset
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of hydraulic cylinders that can automatically reset, including cylinder body and plunger, and the cylinder body is cylindrical in shape and upper end opening, are provided with guide sleeve at the cylinder body upper end opening；The plunger passes through guide sleeve from upper end and protrudes into cylinder body, and the plunger lower end and cylinder base are connected with reset spring.The design under the elastic pulling force of reset spring, plunger is retracted in cylinder body, realization automatically resets under the action of no hydraulic coupling.
Description
Technical field
The present invention relates to a kind of hydraulic cylinders, more particularly to a kind of hydraulic cylinder that can automatically reset.
Background technique
Currently, plunger-type cylinder is a kind of single-acting formula hydraulic actuator that the hydraulic cylinder that can automatically reset is common, it is
Hydraulic energy is changed into mechanical energy and makees the hydraulic actuator of straight line single effect campaign.Its structure is simple, good manufacturability, work
Make reliably, therefore has in various hydraulic systems and be widely applied.Without external forces, plunger stretching can only be according to after going
By the gravitational return stroke of itself, but when plunger is not vertical display, plunger backhaul needs artificial external force or equipment to push, more
Trouble, and waste of manpower and equipment, improve cost.
Summary of the invention
The present invention is directed to solve above-mentioned technical problem at least to a certain extent.For this purpose, the present invention proposes that a kind of energy is automatic
Reset hydraulic cylinder.
The technical solution adopted by the present invention to solve the technical problems is: a kind of hydraulic cylinder that can automatically reset, including cylinder body
And plunger, the cylinder body is cylindrical in shape and upper end opening, is provided with guide sleeve at the cylinder body upper end opening；The plunger is from upper end
It across guide sleeve and protrudes into cylinder body, the plunger lower end and cylinder base are connected with reset spring.
Further, the plunger base extends downward with connecting rod, and the connecting rod lower end is laterally extended to two sides
It is provided with gag lever post, reset spring is limited in the laterally inserted reset spring of gag lever post.
Further, the cylinder body lower end is provided with the gland for sealing, and the gland upper surface is fixed with reset spring
Connection.
Further, the cylinder side wall is provided with fluid-through port.
Further, sealing device is provided between the plunger and guide sleeve；
The sealing device include the first sealing ring, the second sealing ring and elastic packing mechanism, first sealing ring and
Second sealing ring is close to plunger and guide sleeve respectively, the elastic packing mechanism can by the first sealing ring and the second sealing ring it
Between clearance seal and to the two pressure so that it is close to plunger and guide sleeve respectively.
Further, first sealing ring outer ring is provided with the first narrowed outward inclined-plane, elastic packing mechanism packet
Including third sealing ring and preloading spring, the third sealing ring is arranged between the first sealing ring and the second sealing ring, and described the
Three sealing rings are provided with the inclined-plane with the first inclined-plane Corresponding matching, and described preloading spring one end is against on third sealing ring and pushes
It, which squeezes the first sealing ring, makes the first sealing ring compress plunger.
Further, there are two the first inclined-plane settings and arranged symmetrically, corresponding, the elastic packing mechanism is symmetrical
There are two settings.
Further, the second sealing ring inner ring is provided with the second inwardly narrowed inclined-plane, the third sealing ring setting
There is matching inclined-plane.
Further, there are two second inclined-plane is symmetrical arranged.
Further, the guide sleeve is provided with the holding tank for accommodating sealing device, and the holding tank is in plunger axis
The preloading spring hole for accommodating preloading spring is provided on the side wall at direction both ends, described preloading spring one end is against preload bullet
Spring hole bottom, the other end are against on third sealing ring.
The beneficial effects of the present invention are: after plunger stretches out, under the action of no hydraulic coupling, in the elasticity of reset spring
Under pulling force, plunger is retracted in cylinder body, realization automatically resets.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the installation structure diagram of the invention；
Fig. 2 is enlarged view at the A of Fig. 1.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Referring to figs. 1 to Fig. 2, a kind of hydraulic cylinder that can automatically reset of the invention, including cylinder body 1 and plunger 3, the cylinder body 1
It is cylindrical in shape and upper end opening, is provided with guide sleeve 2 at 1 upper end opening of cylinder body.1 side wall of cylinder body is provided with fluid-through port 7,
Fluid-through port 7 is for being filled with hydraulic oil.For the sealing between plunger 3 and guide sleeve 2, it is arranged between the plunger 3 and guide sleeve 2
There is the 4th sealing ring 6.
Guide sleeve 2 is embedded in the sealing of cylinder body 1 opening realization and 1 side wall of cylinder body, and guide sleeve 2 is provided centrally with centre bore, institute
It states plunger 3 to pass through guide sleeve 2 from upper end and protrude into cylinder body 1, plunger 3 can be moved up and down along its axis.3 lower end of plunger with
1 bottom of cylinder body is connected with reset spring 9, and the reset spring 9 can be held in its natural state in 3 retract cylinder 1 of plunger.Specifically
, 3 bottom of plunger extends downward with connecting rod 31, and it is limited that 31 lower end of connecting rod to two sides is laterally extended setting
Position bar 32, limits reset spring 9 in the laterally inserted reset spring 9 of the gag lever post 32, plunger 3, which moves up and down, to be driven
Reset spring 9 is stretched or is shunk.In addition, 1 lower end of cylinder body is provided with the gland 8 for sealing, 8 upper surface of gland with
Reset spring 9 is fixedly connected, and being fixedly connected can be reset spring 9 and catch on hook ring on gland 8, is also possible to that similar limit is arranged
Hook and 9 clasp joint of reset spring can also be arranged in lower end to replace the work of gag lever post 32 in the structure of position bar 32, similarly, plunger 3
With.Cylinder body 1, plunger 3, guide sleeve 2, gland 8 and reset spring 9 are coaxially disposed.
In order to reinforce leakproofness, prevent sealing ring from damaging and leakproofness is caused to fail.Preferably, the plunger 3 and guiding
Sealing device 4 is additionally provided between set 2；The sealing device 4 includes the first sealing ring 41, the second sealing ring 42 and elastic packing
Mechanism, first sealing ring 41 and the second sealing ring 42 are close to plunger 3 and guide sleeve 2 respectively, the elastic packing mechanism
It can be made to be close to plunger 3 respectively and lead by the clearance seal between the first sealing ring 41 and the second sealing ring 42 and to the two pressure
To set 2.
The sealing device 4 includes the first sealing ring 41, the second sealing ring 42 and elastic packing mechanism, first sealing
Circle 41 and the second sealing ring 42 are close to plunger 3 and guide sleeve 2 respectively, and the elastic packing mechanism can be by 41 He of the first sealing ring
Clearance seal between second sealing ring 42 simultaneously makes it be close to plunger 3 and guide sleeve 2 respectively the two pressure.When plunger 3 and lead
When being worn to set 2, it will usually which generating gap influences leakproofness, but under the action of elastic packing mechanism, can push first close
Seal 41, the second sealing ring 42 compensate, so that the first sealing ring 41 and the second sealing ring 42 tightly touch plunger 3 and guiding
Set 2 realizes sealing.
Lower mask body introduces the structure of sealing device.
First sealing ring, 41 outer ring is provided with the first narrowed outward inclined-plane, and the elastic packing mechanism includes third
Sealing ring 43 and preloading spring 5, the third sealing ring 43 is arranged between the first sealing ring 41 and the second sealing ring 42, described
Third sealing ring 43 is provided with the inclined-plane with the first inclined-plane Corresponding matching, and described 5 one end of preloading spring is against third sealing ring 43
It goes up and pushing it to squeeze the first sealing ring 41 makes the first sealing ring 41 compress plunger 3.Third sealing ring 43 is pushed away preloading spring 5
Under dynamic, the first inclined-plane snug fit on the inclined-plane of third sealing ring 43 and the first sealing ring 41 is applied with the first sealing ring 41
To the pressure of internal pressure, the first sealing ring 41 is made to be close to plunger 3.And third sealing ring 43 is also due to the reaction force, close to second
Seal 42 pressure make the second sealing ring 42 be close to 2 inner wall of guide sleeve realize sealing, third sealing ring 43 also with the first sealing ring 41
It is close to the second sealing ring 42, realizes that all sealing stations pre-tighten sealing, improve leakproofness.From foregoing description, it is known that second
The section of sealing ring 42 can be the achievable abutting to guide sleeve 2 of rectangle either other shapes.In order to improve leakproofness
With the balance of active force, there are two the first inclined-plane settings and is symmetrical arranged, and corresponding, the elastic packing mechanism is symmetrical
There are two settings.The section of first sealing ring 41 is then triangle or trapezoidal as shown in Figure 2.
In order to which the second sealing ring 42 is by bigger clinging force, 42 inner ring of the second sealing ring is provided with inwardly narrowed
Second inclined-plane, the third sealing ring 43 are provided with matching inclined-plane, it is preferred that the second inclined-plane is symmetrical arranged, and second is close
42 section of seal be then be triangle or trapezoidal as shown in Figure 2.The inner ring of the second sealing ring 42 is arranged in first sealing ring 41
It is interior.
The guide sleeve 2 is provided with the holding tank 21 for accommodating sealing device 4, and the holding tank 21 is in 3 axis of plunger
The preloading spring hole 22 for accommodating preloading spring 5 is provided on the side wall at direction both ends, described 5 one end of preloading spring is against pre-
Tight 22 bottom of spring eye, the other end are against on third sealing ring 43.
The working principle of the design:
The hydraulic oil of high pressure is filled in cylinder body 1 from fluid-through port 7, and the pushed at high pressure plunger 3 of generation moves up, and high pressure is long-range
In the pulling force of reset spring 9, reset spring 9 can almost disregard the inhibition of hydraulic drive process.When plunger 3 is stretched upwards
When the position extremely needed out, hydraulic-driven stops.Plunger 3 acts on only by the active force of reset spring 9 in reset spring 9 at this time
Under power, 3 retract cylinder 1 of plunger to reset spring 9 is pulled to restore until nature, the nature of reset spring 9 refers to
Reset spring 9 is not by the state of external force, or when plunger 3 is vertically arranged, reset spring 9 is only by the state of 3 gravity of plunger.With
The realization of reset spring 9 automatically resets, and does not influence the plunger stretching motion under hydraulic drive.In this way when plunger 3 is vertically arranged,
Plunger 3 hollow can be arranged, and reduce weight, without automatically reseting by the realization of 3 gravity of plunger, reduce the material of plunger 3,
When plunger 3 is horizontally arranged, one end will not be caused to wear because of quality is too high.
The above embodiments are merely illustrative of the technical solutions of the present invention and is not intended to limit it, all without departing from the present invention
Any modification of spirit and scope or equivalent replacement, shall fall within the scope of the technical solution of the present invention.
Claims (10)
1. a kind of hydraulic cylinder that can automatically reset, it is characterised in that: including cylinder body (1) and plunger (3), the cylinder body (1) is cylindrical in shape
And upper end opening, guide sleeve (2) are provided at cylinder body (1) upper end opening；
The plunger (3) passes through guide sleeve (2) from upper end and protrudes into cylinder body (1), plunger (3) lower end and cylinder body (1) bottom
Portion is connected with reset spring (9).
2. the hydraulic cylinder according to claim 1 that can automatically reset, it is characterised in that: plunger (3) bottom extends downwardly
It is provided with connecting rod (31), connecting rod (31) lower end is laterally extended to two sides is provided with gag lever post (32), the gag lever post
(32) reset spring (9) is limited in laterally inserted reset spring (9).
3. the hydraulic cylinder according to claim 1 that can automatically reset, it is characterised in that: cylinder body (1) the lower end setting is useful
In the gland (8) of sealing, gland (8) upper surface is fixedly connected with reset spring (9).
4. the hydraulic cylinder according to claim 1 that can automatically reset, it is characterised in that: cylinder body (1) side wall is provided with logical
Liquid mouth (7).
5. the hydraulic cylinder according to claim 1 that can automatically reset, it is characterised in that: the plunger (3) and guide sleeve (2) it
Between be provided with sealing device (4)；
The sealing device (4) includes the first sealing ring (41), the second sealing ring (42) and elastic packing mechanism, and described first is close
Seal (41) and the second sealing ring (42) are close to plunger (3) and guide sleeve (2) respectively, and the elastic packing mechanism can be by first
Clearance seal between sealing ring (41) and the second sealing ring (42) simultaneously makes it be close to plunger (3) respectively and be oriented to the two pressure
It covers (2).
6. the hydraulic cylinder according to claim 5 that can automatically reset, it is characterised in that: the first sealing ring (41) outer ring is set
It is equipped with the first outward narrowed inclined-plane, the elastic packing mechanism includes third sealing ring (43) and preloading spring (5), and described the
Three sealing rings (43) are arranged between the first sealing ring (41) and the second sealing ring (42), and the third sealing ring (43) is provided with
With the inclined-plane of the first inclined-plane Corresponding matching, described preloading spring (5) one end is against on third sealing ring (43) and pushes its extruding
First sealing ring (41) makes the first sealing ring (41) to compress plunger (3).
7. the hydraulic cylinder according to claim 6 that can automatically reset, it is characterised in that: first inclined-plane setting there are two and
Be symmetrical arranged, it is corresponding, the elastic packing mechanism be symmetrical arranged there are two.
8. the hydraulic cylinder according to claim 7 that can automatically reset, it is characterised in that: the second sealing ring (42) inner ring is set
It is equipped with the second inwardly narrowed inclined-plane, the third sealing ring (43) is provided with matching inclined-plane.
9. the hydraulic cylinder according to claim 8 that can automatically reset, it is characterised in that: second inclined-plane is symmetrically arranged with two
It is a.
10. the hydraulic cylinder according to claim 7 that can automatically reset, it is characterised in that: the guide sleeve (2), which is provided with, to be used for
The holding tank (21) of sealing device (4) is accommodated, the holding tank (21) is provided on the side wall at plunger (3) axis direction both ends
For accommodating the preloading spring hole (22) of preloading spring (5), described preloading spring (5) one end is against preloading spring hole (22) bottom
Portion, the other end are against on third sealing ring (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456572.5A CN109322871A (en) | 2018-11-30 | 2018-11-30 | A kind of hydraulic cylinder that can automatically reset |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811456572.5A CN109322871A (en) | 2018-11-30 | 2018-11-30 | A kind of hydraulic cylinder that can automatically reset |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109322871A true CN109322871A (en) | 2019-02-12 |
Family
ID=65256021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811456572.5A Pending CN109322871A (en) | 2018-11-30 | 2018-11-30 | A kind of hydraulic cylinder that can automatically reset |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109322871A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775596A (en) * | 2021-09-13 | 2021-12-10 | 中汽创智科技有限公司 | Brake cylinder and brake system |
| CN116658491A (en) * | 2023-07-27 | 2023-08-29 | 湖南协力液压有限公司 | Low-impact hydraulic cylinder dynamic control method and system based on fluid resistance optimization |
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|---|---|---|---|---|
| DE102004004285A1 (en) * | 2003-01-29 | 2004-09-09 | Advics Co., Ltd., Kariya | Master cylinder with a seal holder |
| CN102889267A (en) * | 2012-11-16 | 2013-01-23 | 江阴市洪腾机械有限公司 | Self-restoration single-action type hydraulic cylinder |
| CN102979781A (en) * | 2012-11-27 | 2013-03-20 | 裕东（中山）机械工程有限公司 | Single-acting plunger-type cylinder |
| CN203476909U (en) * | 2013-10-06 | 2014-03-12 | 宜都市西孚机械有限公司 | Rapid-reset hydraulic oil cylinder |
| JP2014129853A (en) * | 2012-12-28 | 2014-07-10 | Ｅｃｏ−Ａ株式会社 | Port part connection structure of cylinder |
| CN104121251A (en) * | 2014-07-17 | 2014-10-29 | 安徽易奇软件科技有限公司 | Buffering device for hydraulic cylinder |
| CN104895867A (en) * | 2014-03-06 | 2015-09-09 | 航天长征化学工程股份有限公司 | Self-return cylinder |
| CN204783926U (en) * | 2015-06-08 | 2015-11-18 | 浙江标盛阀门制造有限公司 | Cylinder with manual reset and automatic re -setting function |
| CN106704586A (en) * | 2017-02-28 | 2017-05-24 | 中冶华天南京工程技术有限公司 | Sealing device for changing groove filling rate of sealing ring |
| CN108223485A (en) * | 2016-12-22 | 2018-06-29 | 天津骏尚鸿联科技有限公司 | A kind of lathe hydraulic cylinder that automatically resets |
| CN207848084U (en) * | 2017-12-28 | 2018-09-11 | 中国铁道科学研究院铁道科学技术研究发展中心 | A kind of compression spring self-resetting oil cylinder of heavy load and limited lifting space |
-
2018
- 2018-11-30 CN CN201811456572.5A patent/CN109322871A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004004285A1 (en) * | 2003-01-29 | 2004-09-09 | Advics Co., Ltd., Kariya | Master cylinder with a seal holder |
| CN102889267A (en) * | 2012-11-16 | 2013-01-23 | 江阴市洪腾机械有限公司 | Self-restoration single-action type hydraulic cylinder |
| CN102979781A (en) * | 2012-11-27 | 2013-03-20 | 裕东（中山）机械工程有限公司 | Single-acting plunger-type cylinder |
| JP2014129853A (en) * | 2012-12-28 | 2014-07-10 | Ｅｃｏ−Ａ株式会社 | Port part connection structure of cylinder |
| CN203476909U (en) * | 2013-10-06 | 2014-03-12 | 宜都市西孚机械有限公司 | Rapid-reset hydraulic oil cylinder |
| CN104895867A (en) * | 2014-03-06 | 2015-09-09 | 航天长征化学工程股份有限公司 | Self-return cylinder |
| CN104121251A (en) * | 2014-07-17 | 2014-10-29 | 安徽易奇软件科技有限公司 | Buffering device for hydraulic cylinder |
| CN204783926U (en) * | 2015-06-08 | 2015-11-18 | 浙江标盛阀门制造有限公司 | Cylinder with manual reset and automatic re -setting function |
| CN108223485A (en) * | 2016-12-22 | 2018-06-29 | 天津骏尚鸿联科技有限公司 | A kind of lathe hydraulic cylinder that automatically resets |
| CN106704586A (en) * | 2017-02-28 | 2017-05-24 | 中冶华天南京工程技术有限公司 | Sealing device for changing groove filling rate of sealing ring |
| CN207848084U (en) * | 2017-12-28 | 2018-09-11 | 中国铁道科学研究院铁道科学技术研究发展中心 | A kind of compression spring self-resetting oil cylinder of heavy load and limited lifting space |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775596A (en) * | 2021-09-13 | 2021-12-10 | 中汽创智科技有限公司 | Brake cylinder and brake system |
| CN116658491A (en) * | 2023-07-27 | 2023-08-29 | 湖南协力液压有限公司 | Low-impact hydraulic cylinder dynamic control method and system based on fluid resistance optimization |
| CN116658491B (en) * | 2023-07-27 | 2023-09-22 | 湖南协力液压有限公司 | Low-impact hydraulic cylinder dynamic control method and system based on fluid resistance optimization |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190212 |
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| RJ01 | Rejection of invention patent application after publication |