CN108266423A - Double-rod high-pressure oil cylinder - Google Patents
Double-rod high-pressure oil cylinder Download PDFInfo
- Publication number
- CN108266423A CN108266423A CN201710001363.0A CN201710001363A CN108266423A CN 108266423 A CN108266423 A CN 108266423A CN 201710001363 A CN201710001363 A CN 201710001363A CN 108266423 A CN108266423 A CN 108266423A
- Authority
- CN
- China
- Prior art keywords
- piston
- piston rod
- hole
- cylinder body
- main body
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims description 34
- 238000009434 installation Methods 0.000 claims description 25
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 7
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 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
- F15B15/1423—Component parts; Constructional details
- F15B15/1438—Cylinder to end cap assemblies
-
- 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
- F15B15/1438—Cylinder to end cap assemblies
- F15B15/1442—End cap sealings
-
- 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
-
- 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
-
- 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 a double-outlet-rod high-pressure oil cylinder which comprises a cylinder body, end covers, a piston and a piston rod, wherein the cylinder body is of a cylindrical structure, and the two axial ends of the cylinder body are fixedly provided with the end covers in a sealing manner; a piston is coaxially and drivingly installed in the cylinder body, a piston rod is fixedly installed in the piston in a penetrating manner, and the two axial ends of the piston rod respectively extend out of the end covers at the two axial ends of the cylinder body; the two end covers are respectively provided with an oil filling hole communicated with the interior of the cylinder body, and the specific structure of each end cover comprises an end cover main body, a piston rod mounting hole and a through hole; the specific structure of the piston comprises a piston main body, a piston rod mounting through hole and a limiting ring groove. The invention has reasonable structural design, simple and reliable structure, low manufacturing cost, low failure rate and convenient maintenance, improves the activity flexibility and reduces the abrasion on the premise of ensuring the sealing property, and has long service life, thus improving the working reliability and the integral service life of elements.
Description
Technical field
The present invention is applied to high-voltage oil cylinder field, especially a kind of double rod high-voltage oil cylinders.
Background technology
Hydraulic cylinder is that hydraulic energy is changed into mechanical energy, the hydraulic actuator for doing straight reciprocating motion.The letter of its structure
Single, reliable operation.Deceleration device when realizing reciprocating motion, can be removed from, and there is no drive gap with it, stable movement, because
This is used widely in the hydraulic system of various machineries.Double rod hydraulic cylinders can save workpiece with two-way work doing, be promoted
Efficiency, but cylinder body inner carrier needs to carry two-way pressure-operated, under long-time high-pressure work state, piston is susceptible to
Abrasion, the situation of oil leak, and be difficult to repair recovery, influence output pressure and job stability.
Invention content
It is an object of the invention in place of overcome the deficiencies in the prior art, a kind of double rod high-voltage oil cylinders be provided, using gold
Belong to structure as rack body, enhance service life, mitigate abrasion.
The present invention solves its technical problem and following technical scheme is taken to realize：
A kind of double rod high-voltage oil cylinders, including cylinder body, end cap, piston and piston rod, cylinder body is cylinder barrel shaped structure, cylinder
The axial both ends of body, which seal, is fixed with an end cap；Driven by Coaxial is equipped with piston in cylinder body, fixed in the piston to be coated with
One piston rod, the axial both ends of the piston rod are each extended over out outside the end cap at axial both ends of cylinder body；Two end caps are formed respectively with
The oil filler point of one connection cylinder interior, it is characterised in that：The concrete structure of end cap include end cover body, piston rod mounting hole and
Through-hole, end cap are used to be packed in axial one end of cylinder body, coaxially a piston rod mounting hole to be formed in the middle part of end cover body；In piston rod
Middle part is formed with a sealing bulge loop in mounting hole, the radial direction side of the end cap between sealing bulge loop and the cylinder interior end face of end cap
An oil filler point is formed with, oil filler point connection piston rod mounting hole；Packing ring is formed between sealing bulge loop and the outer end face of end cap
Slot is formed with 45 ° of inclined-plane between the filler annular groove and sealing bulge loop, the piston rod installation between filler annular groove and end cap end face
Hole is formed with a circular end plate mounting groove；
The concrete structure of piston includes piston main body, piston rod installation through-hole and limited ring groove, and piston main body is a gold medal
Belong to cylindrical structure, a piston rod installation through-hole is coaxially formed in piston main body, spacing ring is formed in piston installation through-hole
Slot；There are two limited ring grooves for coaxial spaced system in piston rod installation through-hole inside piston main body；Inside piston main body
One end of piston rod installation through-hole is formed with the cascade ring greater diameter than piston rod installation through-hole, which is acute angle,
45 ° of inclined-planes are formed between cascade ring and the axial end face of piston main body.
Moreover, end cover body is square cover board, multiple through-holes are formed on the end cap of piston rod mounting hole periphery.
Moreover, the end face of the end cover body insertion valve body is formed with cylindrical inner cylinder sleeve pipe, at the end of casing and root
Lid main body link position is formed with a coaxial insertion annular groove, and the corresponding cylinder body axial end face of insertion annular groove is formed with embedded bulge loop.
Moreover, annular seal groove is formed in the middle part of the annular outer wall of inner cylinder sleeve pipe, mounting O-shaped rings in the annular seal groove.
Moreover, at the middle part interval of the radial support end face of piston main body, symmetrically there are two filler concave rings for system, this two are filled out
Expect to load graphite-like filler in concave ring；Piston main body outer wall between two concave rings is formed with an annular shallow slot, annular shallow slot
The support end face of round-corner transition is formed between axial both ends and filler groove.
Moreover, the support end face at piston main body axial direction both ends and the contact angle of cylinder body are formed with round-corner transition, end face is supported
45 ° of intermediate inclines are formed between filler concave ring.
The advantages and positive effects of the present invention are：
The present invention is reasonable in design, forms simple and reliable, and low cost, failure rate be low, convenient for safeguarding, ensures leakproofness
Under the premise of promotion activity flexibility, mitigate abrasion, and service life is long, from the functional reliabilities of lift elements and whole uses
Service life.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the half section structure diagram of end cap；
Fig. 3 is the left view of end cap；
Fig. 4 is the half section structure diagram of piston.
Specific embodiment
Below in conjunction with the accompanying drawings and pass through specific embodiment the invention will be further described, following embodiment is descriptive
, it is not limited, it is impossible to which protection scope of the present invention is limited with this.
A kind of double rod high-voltage oil cylinders, referring to shown in attached drawing 1, including cylinder body 3, end cap 1, piston 4 and piston rod 2, cylinder
Body is cylinder barrel shaped structure, and the axial both ends of cylinder body, which seal, is fixed with an end cap；Driven by Coaxial is equipped with piston in cylinder body
4, in the piston fixation be coated with a piston rod, the axial both ends of the piston rod each extend over out the end cap at the axial both ends of cylinder body
Outside；Two end caps are formed respectively with the oil filler point of a connection cylinder interior, and by injection/discharge pressure oil, driving piston is in cylinder body
Interior movement moves linearly so as to which piston rod both ends be driven to synchronize.
Referring to shown in attached drawing 2 to attached drawing 3, the concrete structure of end cap includes end cover body 11, piston rod mounting hole (is not marked
Number) and through-hole 19, for end cap for being packed in axial one end of cylinder body, end cover body middle part is coaxially formed with piston rod installation
Hole；Multiple through-holes 19 are formed on the end cap of piston rod mounting hole periphery, for end cap to be packed in cylinder ends.
Piston rod stretches out end cap by the piston rod mounting hole of end cover body, and it is past to carry out straight line in hydraulic oil driving lower piston rod
Multiple movement.
In piston rod mounting hole middle part be formed with a sealing bulge loop 16, sealing bulge loop and end cap cylinder interior end face it
Between the radial direction side of end cap be formed with an oil filler point 12, oil filler point connection piston rod mounting hole injects pressure oil in cylinder body；
On the outside of the oil filler point be formed with internal thread for engage installation oiling pipe fitting；
In order to mitigate the hard friction of end cap and piston rod, packing ring is formed between sealing bulge loop and the outer end face of end cap
Slot 17 is formed with the stiff dough contact surface on 45 ° of inclined-plane, further less end cap and piston rod between the filler annular groove and sealing bulge loop
Product；Piston rod mounting hole between filler annular groove and end cap end face is formed with a circular end plate mounting groove 18, end plate installation
Slot diameter is more than filler annular groove for being coaxially fixedly mounted with end plate 7；45 ° of transition are formed between filler annular groove and end plate mounting groove
Ring.
For the ease of installation, this end cover body is square cover board, convenient for making the oil filler point of end plate main body and valve body oiling
Hole installation site proper alignment.
In order to promote being completely embedded for end cover body and valve body, the end face of the end cover body insertion valve body is formed with cylinder
Inner cylinder sleeve pipe 13, the end cover body link position in casing with root is formed with a coaxial insertion annular groove 15, embedded annular groove pair
The cylinder body axial end face answered is formed with embedded bulge loop.
In order to ensure the leakproofness between end cover body and cylinder body, it is close that annular is formed in the middle part of the annular outer wall of inner cylinder sleeve pipe
Sealing groove 4, mounting O-shaped rings 6 in the annular seal groove.
Referring to shown in attached drawing 4, the concrete structure of piston 4 includes piston main body 41, piston rod installation through-hole 42 and limiting
Annular groove 43, piston main body are a metal cylinder structure, a piston rod installation through-hole are coaxially formed in piston main body, in piston
Limited ring groove is formed in installation through-hole for piston rod to be fixedly mounted.During assembling, piston main body is coaxially mounted to the cylinder body of oil cylinder
It is interior and straight reciprocating motion is carried out in cylinder body, the coaxial stop collar in middle part of piston rod in piston main body, piston rod
Outside the difference linear extension to cylinder body of both ends, the mobile driving piston rod of piston main body carries out straight reciprocating motion；
In order to ensure the stable connection between piston main body and piston rod, the piston rod installation inside piston main body is logical
There are two limited ring grooves for coaxial spaced system in hole, strengthen the installation stability of piston rod and piston main body；
One end of piston rod installation through-hole inside piston main body is formed with the rank greater diameter than piston rod installation through-hole
Terraced ring 44, the cascade ring interior angle are acute angle, and 45 ° of inclined-planes are formed between cascade ring and the axial end face of piston main body, convenient for assembling
When installed from the loading piston rod and limited location snap ring be installed after finishing assembly, further accurate fixed piston rod.
Prolong the service life to enhance the mitigation abrasion of the sliding capability between piston main body and cylinder body, in piston main body
Symmetrically there are two filler concave rings 46 for system at the middle part interval of radial support end face 5, and two filler concave rings are interior to load sliding capability more
Graphite-like filler 5 that is good and ensureing leakproofness；Piston main body outer wall between two concave rings is formed with an annular shallow slot 48, ring
The support end face 47 of round-corner transition is formed between the axial both ends of shape shallow slot and filler groove, reduces and rubs with the stiff dough of inboard wall of cylinder block
It wipes.
The support end face 45 at piston main body axial direction both ends is formed with round-corner transition with the contact angle of cylinder body, and support end face is with filling out
45 ° of intermediate inclines are formed between material concave ring, buffer the slip deformation of filler.
Although disclosing the embodiment of the present invention and attached drawing for the purpose of illustration, those skilled in the art can manage
Solution：Do not departing from the present invention and spirit and scope of the appended claims in, it is various replace, change and modification be all it is possible,
Therefore, the scope of the present invention is not limited to embodiment and attached drawing disclosure of that.
Claims (6)
1. a kind of double rod high-voltage oil cylinders, including cylinder body, end cap, piston and piston rod, cylinder body is cylinder barrel shaped structure, cylinder body
Axial both ends seal and be fixed with an end cap；Driven by Coaxial is equipped with piston in cylinder body, fixed in the piston to be coated with one
Piston rod, the axial both ends of the piston rod are each extended over out outside the end cap at axial both ends of cylinder body；Two end caps are formed respectively with one
Connect the oil filler point of cylinder interior, it is characterised in that：The concrete structure of end cap includes end cover body, piston rod mounting hole and leads to
Hole, end cap are used to be packed in axial one end of cylinder body, coaxially a piston rod mounting hole to be formed in the middle part of end cover body；Pacify in piston rod
Middle part is formed with a sealing bulge loop in dress hole, the radial direction side system of the end cap between sealing bulge loop and the cylinder interior end face of end cap
There is an oil filler point, oil filler point connection piston rod mounting hole；Filler annular groove is formed between sealing bulge loop and the outer end face of end cap,
45 ° of inclined-plane, the piston rod mounting hole between filler annular groove and end cap end face are formed between the filler annular groove and sealing bulge loop
It is formed with a circular end plate mounting groove；
The concrete structure of piston includes piston main body, piston rod installation through-hole and limited ring groove, and piston main body is a round metal
Column structure is coaxially formed with a piston rod installation through-hole in piston main body, limited ring groove is formed in piston installation through-hole；
There are two limited ring grooves for coaxial spaced system in piston rod installation through-hole inside piston main body；Piston rod inside piston main body
One end of installation through-hole is formed with the cascade ring greater diameter than piston rod installation through-hole, the cascade ring interior angle be acute angle, cascade ring
45 ° of inclined-planes are formed between the axial end face of piston main body.
2. double rod high-voltage oil cylinders according to claim 1, it is characterised in that：End cover body is square cover board, in work
Multiple through-holes are formed on the end cap of stopper rod mounting hole periphery.
3. double rod high-voltage oil cylinders according to claim 1, it is characterised in that：The end face of the end cover body insertion valve body
Cylindrical inner cylinder sleeve pipe is formed with, the end cover body link position in casing with root is formed with a coaxial insertion annular groove, embedded
The corresponding cylinder body axial end face of annular groove is formed with embedded bulge loop.
4. double rod high-voltage oil cylinders according to claim 1, it is characterised in that：It is made in the middle part of the annular outer wall of inner cylinder sleeve pipe
There is annular seal groove, mounting O-shaped rings in the annular seal groove.
5. double rod high-voltage oil cylinders according to claim 1, it is characterised in that：In the radial support end face of piston main body
Symmetrically there are two filler concave rings for system at middle part interval, and two filler concave rings are interior to load graphite-like filler；Between two concave rings
Piston main body outer wall is formed with an annular shallow slot, and the support of round-corner transition is formed between the axial both ends of annular shallow slot and filler groove
End face.
6. double rod high-voltage oil cylinders according to claim 1, it is characterised in that：The support end face at piston main body axial direction both ends
Round-corner transition is formed with the contact angle of cylinder body, supports and is formed with 45 ° of intermediate inclines between end face and filler concave ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001363.0A CN108266423B (en) | 2017-01-03 | 2017-01-03 | Double-rod high-pressure oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001363.0A CN108266423B (en) | 2017-01-03 | 2017-01-03 | Double-rod high-pressure oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108266423A true CN108266423A (en) | 2018-07-10 |
| CN108266423B CN108266423B (en) | 2024-01-30 |
Family
ID=62770508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710001363.0A Active CN108266423B (en) | 2017-01-03 | 2017-01-03 | Double-rod high-pressure oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108266423B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1547888A (en) * | 1975-09-04 | 1979-06-27 | Oiles Industry Co Ltd | Plastics air cylinder assembly |
| CN201953737U (en) * | 2010-12-24 | 2011-08-31 | 湖州高登机器研发有限公司 | Hollow double-outlet-rod hydraulic cylinder |
| CN102678667A (en) * | 2012-06-04 | 2012-09-19 | 格力乐液压系统(常州)有限公司 | Wear-resisting hydrocylinder |
| CN206495840U (en) * | 2017-01-03 | 2017-09-15 | 天津市浩琳机械加工有限公司 | Double-rod high-pressure oil cylinder |
-
2017
- 2017-01-03 CN CN201710001363.0A patent/CN108266423B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1547888A (en) * | 1975-09-04 | 1979-06-27 | Oiles Industry Co Ltd | Plastics air cylinder assembly |
| CN201953737U (en) * | 2010-12-24 | 2011-08-31 | 湖州高登机器研发有限公司 | Hollow double-outlet-rod hydraulic cylinder |
| CN102678667A (en) * | 2012-06-04 | 2012-09-19 | 格力乐液压系统(常州)有限公司 | Wear-resisting hydrocylinder |
| CN206495840U (en) * | 2017-01-03 | 2017-09-15 | 天津市浩琳机械加工有限公司 | Double-rod high-pressure oil cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108266423B (en) | 2024-01-30 |
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