CN109253124A - Hydraulic cylinder with good leakproofness - Google Patents
Hydraulic cylinder with good leakproofness Download PDFInfo
- Publication number
- CN109253124A CN109253124A CN201811392525.9A CN201811392525A CN109253124A CN 109253124 A CN109253124 A CN 109253124A CN 201811392525 A CN201811392525 A CN 201811392525A CN 109253124 A CN109253124 A CN 109253124A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- cylinder
- guide sleeve
- piston
- fixed
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 239000010720 hydraulic oil Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod 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 relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with good sealing performance, which comprises a cylinder barrel, wherein one end of the cylinder barrel is fixedly provided with a sealing cover, the inside of the cylinder barrel at one side of the sealing cover is coaxially and slidably provided with a movable piston, the side surface of the movable piston, far away from the sealing cover, is coaxially and vertically fixedly provided with a push rod, one end of the push rod, far away from the movable piston, extends to the outside of the cylinder barrel, the other end of the cylinder barrel is inserted with a guide sleeve with a T-shaped longitudinal section, the guide sleeve is sleeved on the push rod in a coaxial sliding manner, one end of the guide sleeve is inserted into the cylinder barrel. The hydraulic oil cylinder is simple in structure, and when the hydraulic oil cylinder is assembled and disassembled, the sealing rubber ring on the guide sleeve can be prevented from being damaged due to rotation of the guide sleeve, so that good sealing performance of the hydraulic oil cylinder is guaranteed.
Description
Technical field
The present invention relates to technical field of hydraulic oil cylinder more particularly to a kind of hydraulic cylinders with good sealing property.
Background technique
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, the hydraulic of straight reciprocating motion (or pendulum motion) is done and executes member
Part.Its structure is simple, reliable operation.Deceleration device when realizing reciprocating motion, can be removed from it, and do not have drive gap,
Movement is steady, therefore is used widely in the hydraulic system of various machinery.The guide sleeve used on hydraulic cylinder is usually
It is threaded on hydraulic cylinder, but hydraulic cylinder, during assembly and disassembly, the rotation of guide sleeve can be to guiding
It puts on fixed sealing ring to take biggish torque, be easy to cause the damage of guide sleeve upper seal, in turn result in hydraulic cylinder
Leakproofness be deteriorated.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and the one kind proposed has good sealing property
Hydraulic cylinder.
To achieve the goals above, present invention employs following technical solutions:
A kind of hydraulic cylinder with good sealing property, including cylinder barrel are designed, described cylinder barrel one end is fixed with sealing cover,
Concentric inside the cylinder barrel of the sealing cover side to be slidably fitted with piston, the piston is far from same on the side of sealing cover
Axle center and it is vertically fixed with push rod, the push rod extends to outside cylinder barrel far from one end of piston, the cylinder barrel other end
Being fitted with longitudinal section is T-shaped guide sleeve, and guide sleeve is concentric is slidably located on push rod, and described guide sleeve one end is inserted
Inside cylinder barrel, the cylinder barrel inside of the exposed outside in cylinder barrel of the guide sleeve other end, the guide sleeve side is concentric
It is fixed with fixed piston, and push rod is arranged through fixed piston, and to be slidably connected between push rod and fixed piston, outside the cylinder barrel
Guide sleeve on it is concentric respectively be vertically fixed with the first cylinder and the second cylinder, the cylinder barrel is on the top of guide sleeve
The inserting groove to match with the first cylinder is offered, described the first cylinder is inserted into inserting groove far from one end of guide sleeve, institute
It states cylinder barrel to be inserted into inside the second cylinder close to one end of guide sleeve, equidistantly offers first on the guide sleeve inside the cylinder barrel
Threaded hole, multiple first threaded holes circumferentially arrange on guide sleeve, and described the second cylinder is equipped with and the first threaded hole
Corresponding second groove, second groove is interior to be equipped with the first fastening screw, and first fastening screw one end extends through
Cylinder barrel and the first cylinder are simultaneously mounted in the first threaded hole.
Preferably, equidistant and concentric the first groove for offering annular shape in the piston, and the first groove is arranged
On the periphery of piston.
Preferably, run through on the cylinder barrel between the piston and sealing cover and be fixed with oil inlet pipe, and oil inlet pipe is close
Sealing cover is arranged, and runs through on the cylinder barrel between the fixed piston and piston and is fixed with oil return pipe, and oil return pipe is close to fixed living
Plug setting.
Preferably, the guide sleeve of first threaded hole side is equipped with the second threaded hole, the second cylinder side
Third groove corresponding with the second threaded hole is offered on cylinder barrel, and the second fastening screw, institute are installed in the third groove
Second fastening screw one end is stated through cylinder barrel and is mounted in the second threaded hole.
Preferably, concentric inlay is fixed with second on the guide sleeve between second threaded hole and the first threaded hole
Sealing ring, and the second sealing ring is in contact with inner wall of cylinder.
Preferably, concentric sliding sleeve is set there are two the first sealing ring on the push rod, and two first sealing rings are equal
It inlays and is fixed on guide sleeve.
A kind of hydraulic cylinder with good sealing property proposed by the present invention, beneficial effect are: structure letter of the invention
It is single, in assembly and disassembly, it can prevent guide sleeve rotation from the sealing rubber ring on guide sleeve being caused to damage, and then guarantee that this is hydraulic
The good leakproofness of oil cylinder.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the hydraulic cylinder with good sealing property proposed by the present invention；
Fig. 2 is the enlarged drawing in a kind of Fig. 1 of the hydraulic cylinder with good sealing property proposed by the present invention at A.
In figure: cylinder barrel 1, guide sleeve 3, piston 4, push rod 5, the first groove 6, oil inlet pipe 7, oil return pipe 8, is determined sealing cover 2
Piston 9, the first sealing ring 10, the first cylinder 11, the second cylinder 12, the first threaded hole 13, the second threaded hole 14, first fasten spiral shell
Follow closely the 15, second fastening screw 16, the second sealing ring 17.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-2, a kind of hydraulic cylinder with good sealing property, including cylinder barrel 1,1 one end of cylinder barrel are fixed with close
Capping 2, the cylinder barrel of 2 side of sealing cover, 1 inside is concentric to be slidably fitted with piston 4, equidistant in piston 4 and concentric open up
There is the first circular groove 6, and the first groove 6 is arranged on the periphery of piston 4, the first groove 6 can either mitigate dynamic
Frictional force between 1 inner wall of piston 4 and cylinder barrel, and the sealing performance of piston 4 can be improved.
Piston 4 is concentric on the side far from sealing cover 2 and is vertically fixed with push rod 5, and push rod 5 is far from piston 4
One end extend to outside cylinder barrel 1, it is T-shaped guide sleeve 3 that 1 other end of cylinder barrel, which is fitted with longitudinal section, and guide sleeve 3 is coaxial
The heart is slidably located on push rod 5, and 3 one end of guide sleeve is inserted into inside cylinder barrel 1, and 3 other end of guide sleeve is exposed in the outer of cylinder barrel 1
Portion, 1 inside of cylinder barrel of 3 side of guide sleeve is concentric to be fixed with fixed piston 9, and push rod 5 is arranged through fixed piston 9, and push rod 5
To be slidably connected between fixed piston 9, runs through on the cylinder barrel 1 between piston 4 and sealing cover 2 and be fixed with oil inlet pipe 7, and into
Oil pipe 7 is arranged close to sealing cover 2, runs through on the cylinder barrel 1 between fixed piston 9 and piston 4 and is fixed with oil return pipe 8, and oil return
Pipe 8 is arranged close to fixed piston 9.
It is concentric respectively on guide sleeve 3 outside cylinder barrel 1 to be vertically fixed with the first cylinder 11 and the second cylinder 12, cylinder barrel
1 offers the inserting groove to match with the first cylinder 11 on the top of guide sleeve 3, and the first cylinder 11 is far from guide sleeve 3
One end is inserted into inserting groove, and cylinder barrel 1 is inserted into inside the second cylinder 12 close to one end of guide sleeve 3, the guiding inside cylinder barrel 1
The first threaded hole 13 is equidistantly offered on set 3, multiple first threaded holes 13 circumferentially arrange on guide sleeve 3, the second cylinder 12
It is equipped with second groove corresponding with the first threaded hole 13, the first fastening screw 15, the first fastening spiral shell are equipped in the second groove
It follows closely 15 one end to extend through cylinder barrel 1 and the first cylinder 11 and be mounted in the first threaded hole 13, be acted in the first fastening screw 15
Under, guide sleeve 3 is firmly secured on cylinder barrel 1, and facilitate the disassembly and assembly of guide sleeve 3 on hydraulic cylinder.
The guide sleeve 3 of first threaded hole, 13 side is equipped with the second threaded hole 14, opens on the cylinder barrel 1 of 12 side of the second cylinder
Equipped with third groove corresponding with the second threaded hole 14, the second fastening screw 16, the second fastening spiral shell are installed in third groove
16 one end are followed closely through cylinder barrel 1 and are mounted in the second threaded hole 14, the guiding between the second threaded hole 14 and the first threaded hole 13
Concentric inlay is fixed with the second sealing ring 17 on set 3, and the second sealing ring 17 is in contact with 1 inner wall of cylinder barrel, same on push rod 5
Axle center sliding sleeve is set there are two the first sealing ring 10, and two the first sealing rings 10 are inlayed and are fixed on guide sleeve 3, the second fastening
Screw 16 allows guide sleeve 3 to be further fixed on cylinder barrel 1, and will not allow and lead during 3 assembly and disassembly of guide sleeve
Sealing ring on set 3 generates torque, it can be ensured that the hydraulic cylinder has good leakproofness when in use.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of hydraulic cylinder with good sealing property, including cylinder barrel (1), which is characterized in that described cylinder barrel (1) one end is fixed
Equipped with sealing cover (2), cylinder barrel (1) inside of sealing cover (2) side is concentric to be slidably fitted with piston (4), described dynamic
Piston (4) is far from concentric and be vertically fixed with push rod (5) on the side of sealing cover (2), and the push rod (5) is far from piston
(4) one end extends to cylinder barrel (1) outside, and it is T-shaped guide sleeve (3) that cylinder barrel (1) other end, which is fitted with longitudinal section,
And on the concentric push rod that is slidably located in (5) of guide sleeve (3), described guide sleeve (3) one end is inserted into cylinder barrel (1) inside, described
The exposed outside in cylinder barrel (1) of guide sleeve (3) other end, the internal concentric fixation of the cylinder barrel (1) of guide sleeve (3) side are set
Have fixed piston (9), and push rod (5) is arranged through fixed piston (9), and to be slidably connected between push rod (5) and fixed piston (9), institute
It states and concentric respectively on the external guide sleeve (3) of cylinder barrel (1) is vertically fixed with the first cylinder (11) and the second cylinder (12), institute
It states cylinder barrel (1) and offers the inserting groove to match with the first cylinder (11), described the first cylinder on the top of guide sleeve (3)
(11) it is inserted into inserting groove far from the one end of guide sleeve (3), the cylinder barrel (1) is inserted into the close to the one end of guide sleeve (3)
Two cylinders (12) are internal, equidistantly offer the first threaded hole (13) on the internal guide sleeve (3) of the cylinder barrel (1), multiple described
First threaded hole (13) circumferentially arranges on guide sleeve (3), and the second cylinder (12) is equipped with and the first threaded hole (13)
Corresponding second groove, second groove is interior to be equipped with the first fastening screw (15), described first fastening screw (15) one end
It extends through cylinder barrel (1) and the first cylinder (11) and is mounted in the first threaded hole (13).
2. a kind of hydraulic cylinder with good sealing property according to claim 1, which is characterized in that the piston
(4) equidistant and concentric the first groove (6) for offering annular shape on, and the first groove (6) setting is in the circumference of piston (4)
On face.
3. a kind of hydraulic cylinder with good sealing property according to claim 1, which is characterized in that the piston
(4) run through on the cylinder barrel (1) between sealing cover (2) and be fixed with oil inlet pipe (7), and oil inlet pipe (7) is set close to sealing cover (2)
It sets, runs through on the cylinder barrel (1) between the fixed piston (9) and piston (4) and be fixed with oil return pipe (8), and oil return pipe (8) leans on
Nearly fixed piston (9) setting.
4. a kind of hydraulic cylinder with good sealing property according to claim 1, which is characterized in that first screw thread
The guide sleeve (3) of hole (13) side is equipped with the second threaded hole (14), opens up on the cylinder barrel (1) of the second cylinder (12) side
There is third groove corresponding with the second threaded hole (14), is equipped in the third groove the second fastening screw (16), it is described
Second fastening screw (16) one end is through cylinder barrel (1) and is mounted in the second threaded hole (14).
5. a kind of hydraulic cylinder with good sealing property according to claim 4, which is characterized in that second screw thread
Concentric inlay is fixed with the second sealing ring (17) on guide sleeve (3) between hole (14) and the first threaded hole (13), and the
Two sealing rings (17) are in contact with cylinder barrel (1) inner wall.
6. a kind of hydraulic cylinder with good sealing property according to claim 1, which is characterized in that the push rod (5)
Upper concentric sliding sleeve is set there are two the first sealing ring (10), and two first sealing rings (10) inlay and are fixed on guide sleeve
(3) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392525.9A CN109253124A (en) | 2018-11-21 | 2018-11-21 | Hydraulic cylinder with good leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392525.9A CN109253124A (en) | 2018-11-21 | 2018-11-21 | Hydraulic cylinder with good leakproofness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109253124A true CN109253124A (en) | 2019-01-22 |
Family
ID=65044254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811392525.9A Pending CN109253124A (en) | 2018-11-21 | 2018-11-21 | Hydraulic cylinder with good leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109253124A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886740A (en) * | 2019-12-06 | 2020-03-17 | 湖南天泓液压机械有限公司 | Guide sleeve of hydraulic oil cylinder |
| CN114321088A (en) * | 2021-12-31 | 2022-04-12 | 山东福阳液压科技有限公司 | Front-mounted dumper double-channel sealing hydraulic oil cylinder |
-
2018
- 2018-11-21 CN CN201811392525.9A patent/CN109253124A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110886740A (en) * | 2019-12-06 | 2020-03-17 | 湖南天泓液压机械有限公司 | Guide sleeve of hydraulic oil cylinder |
| CN110886740B (en) * | 2019-12-06 | 2022-05-03 | 湖南天泓液压机械有限公司 | Guide sleeve of hydraulic oil cylinder |
| CN114321088A (en) * | 2021-12-31 | 2022-04-12 | 山东福阳液压科技有限公司 | Front-mounted dumper double-channel sealing hydraulic oil cylinder |
| CN114321088B (en) * | 2021-12-31 | 2024-02-23 | 山东福阳液压科技有限公司 | Double-channel sealing hydraulic cylinder of front dump truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190122 |