CN109469662A - A kind of servo hydraulic cylinder - Google Patents
A kind of servo hydraulic cylinder Download PDFInfo
- Publication number
- CN109469662A CN109469662A CN201710951772.7A CN201710951772A CN109469662A CN 109469662 A CN109469662 A CN 109469662A CN 201710951772 A CN201710951772 A CN 201710951772A CN 109469662 A CN109469662 A CN 109469662A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- cylinder barrel
- loaded
- guide sleeve
- front cover
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims description 9
- 229910000906 Bronze Inorganic materials 0.000 claims description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 8
- 239000010974 bronze Substances 0.000 claims description 8
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 8
- 230000008021 deposition Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000000446 fuel Substances 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method 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
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
A kind of servo hydraulic cylinder, including cylinder barrel, loaded on the piston rod inside cylinder barrel, the front cover loaded on cylinder barrel one end, the rear cover loaded on the cylinder barrel other end have pull rod fastening between front cover, rear cover；The piston rod is step, and centre is big cylindrical portion, both sides are small column portion；The big cylindrical portion and cylinder barrel tight fit of the piston rod, the big cylindrical portion outer surface of piston rod are equipped with annular groove, have sealing ring in annular groove；First guide sleeve is loaded between front cover inner hole and piston rod outer wall；Second guide sleeve is loaded between rear cover inner hole and piston rod outer wall.Inner cavity of cylinder is divided into two seal chambers by piston rod cylindrical portion broad in the middle.When external hydraulic system fuel feeding, piston rod is moved back and forth.The characteristics of structure of the invention has whole welding, without deformation, easy processing, and wearability is good, long service life.
Description
Technical field
The invention belongs to hydraulic cylinder technical fields, and in particular to a kind of servo hydraulic cylinder.
Background technique
Currently, well known servo hydraulic cylinder is cylinder barrel both ends band flange, flange and cylinder barrel are welded, front/rear cover and cylinder barrel spiral shell
Tether and connect, sealing structure is support ring+Glais ring on piston rod, on guide sleeve sealing structure be Y shape circle+this special envelope+support ring+
Dust-proof coil structures, welding structure are also easy to produce inner hole of cylinder deformation, and support ring wears no resistance, and reduce hydraulic cylinder service life.
Summary of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned hydraulic cylinder structure, provide a kind of whole welding, without deformation, easily
Processing, wearability is good, servo hydraulic cylinder with long service life.
Technical solution of the present invention includes cylinder barrel, loaded on the piston rod inside cylinder barrel, and front cover loaded on cylinder barrel one end is loaded on
The rear cover of the cylinder barrel other end has pull rod fastening between front cover, rear cover；The piston rod is step, and centre is big cylindrical portion, two
Side is small column portion；The big cylindrical portion and cylinder barrel tight fit of the piston rod, the big cylindrical portion outer surface of piston rod are equipped with annular groove,
There is sealing ring in annular groove；First guide sleeve is loaded between front cover inner hole and piston rod outer wall；Second guide sleeve is loaded in rear cover
Between hole and piston rod outer wall.
The big cylindrical portion of piston rod of the present invention is set there are three annular groove, and intermediate annular groove is used to install sealing ring, both ends
Annular groove bottom is equipped with V-shaped groove, and two annular grooves use tin bronze deposition, and outer surface is equipped with rectangular channel after tin bronze deposition.Two end ring
After shape slot tin bronze deposition, it play supporting role.
First guide sleeve of the present invention, the second guide sleeve material are tin bronze, and two guide sleeve inner holes, which have been equipped with, seals work
Ring packing groove.
Front cover of the present invention is equipped with installation through-hole for fasten with rear cover by pull rod, front cover inner hole with outside cylinder barrel
Circle matching part is equipped with sealed groove, and front cover is equipped with the oil duct of connection outside and inner cavity of cylinder.
The threaded hole for being equipped with and fastening with front cover by pull rod is covered after of the present invention, rear cover inner hole is matched with cylinder barrel outer circle
It closes position and is equipped with sealed groove, rear cover is equipped with the oil duct of connection outside and inner cavity of cylinder.
Cylinder barrel material of the present invention is 38CrMoAlA, and inner hole uses Nitrizing Treatment.
Pull rod both ends of the present invention are equipped with screw thread.
Sealing ring of the present invention is Glais ring.
First guide sleeve of the present invention, the second guide sleeve ring packing groove be respectively 2, the installation of ring packing groove
Sealing ring be this spy envelope.The ring-shaped groove plays lubricating action.The sealing ring seals.
Compared with prior art, structure of the invention has whole welding, without deformation, easy processing, and wearability is good, uses the longevity
Order long advantage.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is piston rod construction schematic diagram.
Fig. 3 is guide sleeve structure schematic diagram.
Specific embodiment
In Fig. 1, the first guide sleeve 5-1, the second guide sleeve 5-2 are loaded on front cover 3,4 inner hole of rear cover respectively, and locking nut 8 will
First guide sleeve 5-1, the second guide sleeve 5-2 are locked respectively in front cover 3,4 inner hole of rear cover, and piston rod 2 is loaded in cylinder barrel 1
Hole, piston rod 2 are equipped with sealing ring, 1 inner hole of cylinder barrel are divided into two chambers, front cover 3 is loaded on 1 left end of cylinder barrel, and rear cover 4 is loaded on cylinder barrel 1
Right end, 6 one end of pull rod are threadedly coupled by 3 installation through-hole of front cover with rear cover 4,6 other end of pull rod pass through nut 7 by front cover 3, after
Lid 4 is fastened on 1 both ends of cylinder barrel.Piston rod 2 is step, and centre is big cylindrical portion, is equipped with annular seal groove among big cylindrical portion
9, annular seal groove 9 is equipped with sealing ring (Glais ring) 10.First the second guide sleeve 5-2 of guide sleeve 5-1() inner hole be equipped with annular it is close
Groove 11 is sealed, ring packing groove 11 is equipped with this spy's envelope 12.Front cover 3 is equipped with the external oil duct 13 with inner cavity of cylinder of connection.Rear cover 4
Equipped with the external oil duct 14 with inner cavity of cylinder of connection.
In Fig. 2, piston rod 2 is step, and centre is big cylindrical portion, both sides are small column portion, is equipped among big cylindrical portion
Annular seal groove 9, annular seal groove 9 be equipped with sealing ring 10(Glais ring), cylinder barrel is divided into two seal chambers, prevent two it is intracavitary
Oil liquid intercommunication.15 tin bronze deposition of big cylindrical portion both ends annular groove, contacts with inner hole of cylinder, play supporting role.
In Fig. 3, the first guide sleeve 5-1 inner hole is equipped with ring packing groove 11, and ring packing groove 11 seals 12 equipped with this spy,
Prevent oil liquid from leaking outside.
When work, external hydraulic system fuel feeding pushes 2 left side of piston rod by 3 oil duct 13 of front cover, and piston rod 2 is to the right
Movement, behind 2 right side of piston rod and 4 left end face contact of rear cover, external hydraulic system commutation fuel feeding passes through 4 oil duct 14 of rear cover
2 right side of piston rod is pushed, piston rod 2 moves downward, behind 2 left side of piston rod and 3 right end face contact of front cover, external hydraulic
System commutation fuel feeding, pushes 2 left side of piston rod by 3 oil duct 13 of front cover, and piston rod 2 moves right, and carries out repeatedly high
Frequency movement.
Claims (9)
1. a kind of servo hydraulic cylinder, it is characterised in that: including cylinder barrel (1), piston rod (2) loaded on cylinder barrel (1) inside, be loaded on cylinder
The front cover (3) of cylinder (1) one end, the rear cover (4) for being loaded on cylinder barrel (1) other end；There is pull rod (6) tight between front cover (3), rear cover (4)
Gu；The piston rod (2) is step, and centre is big cylindrical portion, both sides are small column portion；The big cylindrical portion of the piston rod with
Cylinder barrel (1) tight fit, the big cylindrical portion outer surface of piston rod are equipped with annular groove, have sealing ring in annular groove (9)；
First guide sleeve (5-1) is loaded between front cover (3) inner hole and piston rod (2) outer wall；Second guide sleeve (5-2) is loaded on rear cover
(4) between inner hole and piston rod (2) outer wall.
2. servo hydraulic cylinder according to claim 1, it is characterised in that: there are three the big cylindrical portion of the piston rod (2) is set
Annular groove, for intermediate annular groove (9) for installing sealing ring (10), annular groove (15) bottom in both ends is equipped with V-shaped groove, and two annular grooves use
Tin bronze deposition, outer surface is equipped with rectangular channel after tin bronze deposition.
3. servo hydraulic cylinder according to claim 1, it is characterised in that: first guide sleeve (5-1), the second guide sleeve
(5-2) material is tin bronze, and two guide sleeve inner holes set ring packing groove (11).
4. servo hydraulic cylinder according to claim 1, it is characterised in that: the front cover (3) be equipped with for rear cover (4)
The installation through-hole fastened by pull rod (6), front cover (3) inner hole and cylinder barrel (1) outer circle matching part are equipped with sealed groove, front cover
(3) it is equipped with the external oil duct with cylinder barrel (1) inner cavity of connection.
5. servo hydraulic cylinder according to claim 1, it is characterised in that: the rear cover (4) is equipped with to be passed through with front cover (3)
The threaded hole of pull rod (6) fastening, rear cover (4) inner hole and cylinder barrel (1) outer circle matching part are equipped with sealed groove, and rear cover (4) is set
There is connection external and the oil duct of cylinder barrel (1) inner cavity.
6. servo hydraulic cylinder according to claim 1, it is characterised in that: cylinder barrel (1) material is 38CrMoAlA, interior
Hole uses Nitrizing Treatment.
7. servo hydraulic cylinder according to claim 1, it is characterised in that: pull rod (6) both ends are equipped with screw thread.
8. servo hydraulic cylinder according to claim 2, it is characterised in that: the sealing ring (10) is Glais ring.
9. servo hydraulic cylinder according to claim 3, it is characterised in that: first guide sleeve (5-1), the second guide sleeve
The ring packing groove (11) of (5-2) is respectively 2, and the sealing ring (12) of ring packing groove (11) installation is this spy's envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951772.7A CN109469662A (en) | 2017-10-13 | 2017-10-13 | A kind of servo hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951772.7A CN109469662A (en) | 2017-10-13 | 2017-10-13 | A kind of servo hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109469662A true CN109469662A (en) | 2019-03-15 |
Family
ID=65658208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710951772.7A Withdrawn CN109469662A (en) | 2017-10-13 | 2017-10-13 | A kind of servo hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109469662A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389767A (en) * | 2021-07-23 | 2021-09-14 | 中国科学院合肥物质科学研究院 | Double-acting pneumatic actuator with long-stroke large-cylinder-diameter structure and control system thereof |
| CN113389767B (en) * | 2021-07-23 | 2024-06-21 | 中国科学院合肥物质科学研究院 | Double-acting pneumatic actuator with long-stroke and large-cylinder-diameter structure and control system thereof |
-
2017
- 2017-10-13 CN CN201710951772.7A patent/CN109469662A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389767A (en) * | 2021-07-23 | 2021-09-14 | 中国科学院合肥物质科学研究院 | Double-acting pneumatic actuator with long-stroke large-cylinder-diameter structure and control system thereof |
| CN113389767B (en) * | 2021-07-23 | 2024-06-21 | 中国科学院合肥物质科学研究院 | Double-acting pneumatic actuator with long-stroke and large-cylinder-diameter structure and control system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101814541B1 (en) | Fluid pressure apparatus | |
| US10054184B2 (en) | Guiding and sealing unit, particularly for a shock absorber rod | |
| US10900568B2 (en) | Sealing structure | |
| CN104454757A (en) | Hydraulic cylinder and cylinder cover structure thereof | |
| CN104613047A (en) | Leakage-proof pressure-bearing hydraulic cylinder | |
| CN105697444A (en) | Graphite copper sleeve type piston rod upper assembly capable of replacing guiding belt | |
| KR20120045043A (en) | Air cylinder | |
| GB2585734A (en) | Seal bladder bonding sleeves for submersible well pump assembly | |
| CN207363997U (en) | A kind of servo hydraulic cylinder | |
| CN109469662A (en) | A kind of servo hydraulic cylinder | |
| CN104006023B (en) | One utilizes gap sealed plunger case | |
| CN111173931A (en) | Double-magnetic-source labyrinth type magnetic fluid sealing device | |
| CN210978523U (en) | Upright post sealing device | |
| CN210106634U (en) | Gate valve with good sealing performance | |
| CN210919626U (en) | Bidirectional cylinder | |
| CN217975865U (en) | Fixed oil seal structure and hydraulic buffer rod | |
| CN209510771U (en) | Floating type low friction sealing ring cylinder | |
| CN216922966U (en) | Novel brake caliper piston structure | |
| CN220365802U (en) | Hydraulic cylinder body with high stability | |
| CN212609257U (en) | Hydraulic support jack and hydraulic support | |
| CN210566636U (en) | Spring type reset safety valve piston rod inner and outer sealing structure | |
| CN210461504U (en) | Nitrogen spring with flange mounting disc | |
| CN204025648U (en) | Small-sized oil hydraulic cylinder piston assembly | |
| CN103375455B (en) | A kind of transfer bar mechanism | |
| CN219953797U (en) | High-sealing hydraulic cylinder |
Legal Events
| 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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190315 |