CN209724850U - A kind of double-piston hydraulic oil cylinder - Google Patents
A kind of double-piston hydraulic oil cylinder Download PDFInfo
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- CN209724850U CN209724850U CN201920152964.6U CN201920152964U CN209724850U CN 209724850 U CN209724850 U CN 209724850U CN 201920152964 U CN201920152964 U CN 201920152964U CN 209724850 U CN209724850 U CN 209724850U
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Abstract
The utility model discloses a kind of double-piston hydraulic oil cylinders, including cylinder body, one end of the cylinder body is provided with the first rod aperture, and first the inner wall of rod aperture be provided with hollow piston rod, the outer end of the hollow piston rod is provided with the second rod aperture, and second the inner wall of rod aperture be provided with solid piston bar, the outer end of solid piston bar is provided with baffle, baffle is fixed on the outer end wall of hollow piston rod by fixing screws, the first dustband is inlaid with close to the position in outside at first rod aperture of the cylinder body, and first the inner wall of dustband be in contact with the outer wall of hollow piston rod, the second dustband is inlaid with close to the position in outside at second rod aperture of the hollow piston rod, and second dustband inner wall with realize piston rod outer wall be in contact.The utility model can prevent instantaneous touch between first piston and second piston and the first baffle ring and the second baffle ring and generate shock, improve service life, facilitate the adjusting of stroke, play dust-proof effect.
Description
Technical field
The utility model relates to technical field of hydraulic oil cylinder more particularly to a kind of double-piston hydraulic oil cylinders.
Background technique
Most common component is all kinds of hydraulic cylinder in all kinds of engineering machinery, and hydraulic cylinder refers to by piston rod, work
The linear motion that hydraulic energy can be converted into mechanical energy that plug, guide sleeve, cylinder barrel, cylinder cap and all kinds of sealings are assembled into it is dedicated
Equipment assembly, for controlling the various fields such as lifting of Vehicular turn, lifting arm in engineering machinery.
Through retrieving, Chinese Patent Application No. is the patent of CN201720311446.5, discloses a kind of double-piston hydraulic oil
Cylinder, including cylinder body and Double decker piston.One of above-mentioned patent double-piston hydraulic oil cylinder has the disadvantage that
1, the hydraulic cylinder when in use, when piston motion touching to stroke limiting position Shi Huiyu limit plate output moment
It hits, then causes noise larger, and the service life of limit plate can be reduced.
2, stroke can not be adjusted the hydraulic cylinder when in use.
3, extraneous dust is easy the cylinder interior that is moved into piston rod to the hydraulic cylinder when in use, then causes
Hydraulic oil agglomeration, influences the use of hydraulic cylinder.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of double-piston hydraulic proposed
Oil cylinder.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of double-piston hydraulic oil cylinder, including cylinder body, one end of the cylinder body is provided with the first rod aperture, and the first rod aperture is interior
Wall is provided with hollow piston rod, and the outer end of the hollow piston rod is provided with the second rod aperture, and the inner wall of the second rod aperture is provided with reality
It to be indecisive and changeable stopper rod, the outer end of solid piston bar is provided with baffle, and baffle is fixed on the outer end wall of hollow piston rod by fixing screws,
The first dustband, and the inner wall of the first dustband and hollow work are inlaid with close to the position in outside at first rod aperture of the cylinder body
The outer wall of stopper rod is in contact, and is inlaid with the second dustband close to the position in outside at the second rod aperture of the hollow piston rod, and
The inner wall of second dustband is in contact with the outer wall for realizing piston rod, between the inner wall of the cylinder body and the outer wall of hollow piston rod
It is provided with stroke control mechanism, the inner wall close to its other end of the cylinder body is provided with the second baffle ring, and the one of the second baffle ring
Side outer wall is connected with the second retaining ring by second spring, and the inner wall close to its inner end of the hollow piston rod is provided with first gear
Ring, and the outer end of the first baffle ring is connected with the first retaining ring by the first spring.
Further, the outer wall of the hollow piston rod inner end is fixedly connected with second piston, and the outer wall of second piston
It is adapted with the inner wall of cylinder body, the inner end outer wall of the solid piston bar is fixedly connected with first piston, and first piston is outer
Wall is adapted with the inner wall of hollow piston rod.
Further, the inner sidewall of the hollow piston rod is provided with the first block, and the side outer wall of solid piston bar is set
It is equipped with the first limited block, and the first block and the first limited block are adapted, the lateral wall of hollow piston rod is provided with the second limit
Block.
Further, the first fuel feed hole, and the side outer wall of cylinder body are provided on the side wall of the close one end of the cylinder body
The side inner walls of the other end and the second baffle ring are provided with same second fuel feed hole.
Further, the stroke control mechanism includes that there are two adjusting blocks, and adjusting block is all set in the side of cylinder body
The inner wall of inner wall, adjusting block is provided with adjusting set.
Further, the inner wall of the adjusting set has been connected through a screw thread adjusting rod, and one end of adjusting rod is provided with row
Journey block, stroke block are adapted with adjusting block.
Further, the side outer wall of the cylinder body is opened there are two bull stick hole, and bull stick hole is located at the side of adjusting block, turn
The inner wall of rod aperture passes through bearing seal and is connected with bull stick, and bull stick is driven with adjusting set by helical gear stroke, one end of bull stick
It is provided with adjusting knob.
The utility model has the following beneficial effects:
1, by setting the first spring and second spring, on the first baffle ring and the second baffle ring respectively by the first spring and
The spring energy of second spring the first retaining ring of connection and the second retaining ring, the first spring and second spring makes first piston and second piston
Elastic Contact is generated after reaching stroke, then prevents moment between first piston and second piston and the first baffle ring and the second baffle ring
It contacts and generates shock, reduce noise, improve service life.
2, by setting stroke control mechanism, stroke control mechanism is set between cylinder body and hollow piston rod, passes through row
Journey regulating mechanism can accurately adjust stroke when hollow piston rod movement, facilitate the adjusting of stroke.
3, solid piston can be prevented by the first dustband of setting and the second dustband, the first dustband and the second dustband
Dust enters in cylinder body and hydraulic oil is caused to agglomerate when bar and hollow piston rod move, and plays dust-proof effect.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of double-piston hydraulic oil cylinder structural schematic diagram；
Fig. 2 is the structural schematic diagram in Fig. 1 at A；
Fig. 3 is the structural schematic diagram of B-B in Fig. 1；
Fig. 4 be the utility model proposes a kind of double-piston hydraulic oil cylinder adjusting block structural schematic diagram.
In figure: 1- cylinder body, the first baffle ring of 2-, the first spring of 3-, 4- hollow piston rod, the second limited block of 5-, 6- first into
Oilhole, the first dustband of 7-, 8- fixing screws, 9- baffle, the second dustband of 10-, the first block of 11-, the first limited block of 12-,
13- solid piston bar, 14- first piston, the first retaining ring of 15-, 16- second piston, the second retaining ring of 17-, 18- second spring, 19-
Second baffle ring, the second fuel feed hole of 20-, 21- bull stick, 22- adjusting block, 23- stroke block, 24- unload oilhole, 25- adjusting set, 26- tune
Pole, 27- adjusting knob.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Referring to Fig.1-4, a kind of double-piston hydraulic oil cylinder, including cylinder body 1, one end of cylinder body 1 are provided with the first rod aperture, and first
The inner wall of rod aperture slidably connects hollow piston rod 4, and the outer end of hollow piston rod 4 is provided with the second rod aperture, and the second rod aperture is interior
Wall slidably connects solid piston bar 13, and the outer end of solid piston bar 13 is welded with baffle 9, and baffle 9 is fixed by fixing screws 8
The first dustband 7, and first are inlaid with close to the position in outside at the outer end wall of hollow piston rod 4, the first rod aperture of cylinder body 1
The inner wall of dustband 7 is in contact with the outer wall of hollow piston rod 4, close to the position in outside at the second rod aperture of hollow piston rod 4
It is inlaid with the second dustband 10, and the inner wall of the second dustband 10 is in contact with the outer wall for realizing piston rod 4, the inner wall of cylinder body 1
Stroke control mechanism is provided between the outer wall of hollow piston rod 4, the inner wall close to its other end of cylinder body 1 is welded with second
Baffle ring 19, and the outer end of the second baffle ring 19 is connected with the second retaining ring 17 by second spring 18, hollow piston rod 4 in it
The inner wall at end is welded with the first baffle ring 2, and the outer end of the first baffle ring 2 is connected with the first retaining ring 15 by the first spring 3.
In the utility model, the outer wall of 4 inner end of hollow piston rod is fixedly connected with second piston 16, and second piston 16
Outer wall is adapted with the inner wall of cylinder body 1, and the inner end outer wall of solid piston bar 13 is fixedly connected with first piston 14, and first piston
14 outer wall is adapted with the inner wall of hollow piston rod 4, and the inner sidewall of hollow piston rod 4 is welded with the first block 11, solid work
The side outer wall of stopper rod 13 is welded with the first limited block 12, and the first block 11 and the first limited block 12 are adapted, hollow piston
The lateral wall of bar 4 is welded with the second limited block 5, and the first fuel feed hole 6, and cylinder body 1 are provided on the side wall of the close one end of cylinder body 1
On the side wall of its other end and offered on the side wall of the second baffle ring 19 coaxially and the second fuel feed hole 20 for being connected to, stroke
Regulating mechanism includes that there are two adjusting blocks 22, and adjusting block 22 is welded in the side inner walls of cylinder body 1, and the inner wall of adjusting block 22 is logical
It crosses bearing and is connected with adjusting set 25, the inner wall of adjusting set 25 has been connected through a screw thread adjusting rod 26, and one end weldering of adjusting rod 26
It is connected to stroke block 23, stroke block 23 is adapted with adjusting block 22, and the side outer wall of cylinder body 1 is opened there are two bull stick hole, and bull stick hole
Positioned at the side of adjusting block 22, the inner wall in bull stick hole passes through bearing seal and is connected with bull stick 21, and bull stick 21 and adjusting set 25 are logical
The transmission of helical gear stroke is crossed, one end of bull stick 21 is welded with adjusting knob 27.
Working principle: in use, injecting hydraulic oil by the second fuel feed hole 20, make second piston under the action of hydraulic oil
16 move downward, and then hollow piston rod 4 are driven to move, and when needing to increase the stroke of oil cylinder, fixing screws 8 are dismantled
It moves first piston 14 in hollow piston rod 4, then drives and realize that piston rod 13 moves, to increase the row of hydraulic cylinder
Journey is able to rotate adjusting set 25 by rotation adjusting knob 27 and then drives stroke block 23 mobile, then can accurately control hydraulic oil
The stroke of cylinder, facilitates the adjusting of stroke distances, and the first spring 3 and second spring 18 can make first piston 14 and second piston 16
Elastic Contact is generated with the first retaining ring 15 and the second retaining ring 17, can then reduce noise, and the first baffle ring 2 and second gear can be prevented
Ring 19 damages.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (7)
1. a kind of double-piston hydraulic oil cylinder, including cylinder body (1), which is characterized in that one end of the cylinder body (1) is provided with the first bar
Hole, and the inner wall of the first rod aperture is provided with hollow piston rod (4), the outer end of the hollow piston rod (4) is provided with the second rod aperture, and
The inner wall of second rod aperture is provided with solid piston bar (13), and the outer end of solid piston bar (13) is provided with baffle (9), baffle (9)
The outer end wall of hollow piston rod (4) is fixed on by fixing screws (8), close to outside at the first rod aperture of the cylinder body (1)
Position is inlaid with the first dustband (7), and the inner wall of the first dustband (7) is in contact with the outer wall of hollow piston rod (4), described
It is inlaid with the second dustband (10) at second rod aperture of hollow piston rod (4) close to the position in outside, and the second dustband (10)
Inner wall be in contact with the outer wall of hollow piston rod (4), between the inner wall of the cylinder body (1) and the outer wall of hollow piston rod (4)
It is provided with stroke control mechanism, the inner wall close to its other end of the cylinder body (1) is provided with the second baffle ring (19), and second gear
The side outer wall of ring (19) is connected with the second retaining ring (17) by second spring (18), the hollow piston rod (4) close to it
The inner wall of inner end is provided with the first baffle ring (2), and the outer end of the first baffle ring (2) is connected with the first retaining ring by the first spring (3)
(15)。
2. a kind of double-piston hydraulic oil cylinder according to claim 1, which is characterized in that hollow piston rod (4) inner end
Outer wall be fixedly connected with second piston (16), and the outer wall of second piston (16) is adapted with the inner wall of cylinder body (1), the reality
The inner end outer wall of stopper rod (13) of being indecisive and changeable is fixedly connected with first piston (14), and the outer wall and hollow piston rod of first piston (14)
(4) inner wall is adapted.
3. a kind of double-piston hydraulic oil cylinder according to claim 1, which is characterized in that the hollow piston rod (4) it is interior
Side wall is provided with the first block (11), and the side outer wall of solid piston bar (13) is provided with the first limited block (12), and first gear
Block (11) and the first limited block (12) are adapted, and the lateral wall of hollow piston rod (4) is provided with the second limited block (5).
4. a kind of double-piston hydraulic oil cylinder according to claim 1, which is characterized in that the close one of the cylinder body (1)
It is provided on the side wall at end the first fuel feed hole (6), and the side inner walls of the side outer wall other end of cylinder body (1) and the second baffle ring (19)
It is provided with same second fuel feed hole (20).
5. a kind of double-piston hydraulic oil cylinder according to claim 1, which is characterized in that the stroke control mechanism includes
Two adjusting blocks (22), and adjusting block (22) is all set in the side inner walls of cylinder body (1), the inner wall of adjusting block (22) is provided with tune
Section set (25).
6. a kind of double-piston hydraulic oil cylinder according to claim 5, which is characterized in that the inner wall of the adjusting set (25) is logical
It crosses and is threaded with adjusting rod (26), and one end of adjusting rod (26) is provided with stroke block (23), stroke block (23) and adjusting block
(22) it is adapted.
7. a kind of double-piston hydraulic oil cylinder according to claim 6, which is characterized in that the side outer wall of the cylinder body (1)
Bull stick hole there are two opening, and bull stick hole is located at the side of adjusting block (22), the inner wall in bull stick hole is connected with by bearing seal
Bull stick (21), bull stick (21) are driven with adjusting set (25) by helical gear stroke, and one end of bull stick (21) is provided with adjusting knob
(27)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920152964.6U CN209724850U (en) | 2019-01-29 | 2019-01-29 | A kind of double-piston hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920152964.6U CN209724850U (en) | 2019-01-29 | 2019-01-29 | A kind of double-piston hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209724850U true CN209724850U (en) | 2019-12-03 |
Family
ID=68681744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920152964.6U Active CN209724850U (en) | 2019-01-29 | 2019-01-29 | A kind of double-piston hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209724850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943744A (en) * | 2021-02-01 | 2021-06-11 | 许志业 | Novel sealing device for hydraulic cylinder |
-
2019
- 2019-01-29 CN CN201920152964.6U patent/CN209724850U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943744A (en) * | 2021-02-01 | 2021-06-11 | 许志业 | Novel sealing device for hydraulic cylinder |
| CN112943744B (en) * | 2021-02-01 | 2023-03-28 | 河南德佰特机电设备制造有限公司 | Hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 034100 Dayun roadside in the south of Yuanping City, Xinzhou City, Shanxi Province (east of Shangxiao Yuanping Village) Patentee after: Yuanping Juyuan Hydraulic Machinery Co.,Ltd. Address before: 034100 Yuanping Village, Dayun Road, Yuanping City, Taiyuan City, Shanxi Province Patentee before: Yuanping Juyuan Hydraulic Machinery Co.,Ltd. |
|
| CP03 | Change of name, title or address |