CN205715057U - A kind of durable rotary extension device - Google Patents
A kind of durable rotary extension device Download PDFInfo
- Publication number
- CN205715057U CN205715057U CN201620361965.8U CN201620361965U CN205715057U CN 205715057 U CN205715057 U CN 205715057U CN 201620361965 U CN201620361965 U CN 201620361965U CN 205715057 U CN205715057 U CN 205715057U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- overcoat
- inner edge
- extension device
- hydraulic cylinder
- 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.)
- Expired - Fee Related
Links
Landscapes
- Joints Allowing Movement (AREA)
Abstract
This utility model relates to a kind of durable rotary extension device, coat suit in described swivel joint is in mandrel outer rim, the end face outside of two bearings of inner edge, overcoat two ends suit pushes up the inner side end of two end caps being pressed on mandrel suit respectively, make two hydraulic fluid ports on the coat, these two hydraulic fluid ports respectively with two oil ducts conducting of making in mandrel, all being embedded in a rotating seal ring on the overcoat inner edge of each hydraulic fluid port both sides, the inner edge of these four rotating seal rings is closely crimped on the outer rim of mandrel.This utility model, gap between overcoat and mandrel becomes big, requires to reduce to the cleannes of fluid, does not haves the overcoat caused because of oil residue and the stuck phenomenon of mandrel more, the fluid amount of leakage reduces, not resulting in outward leakage, the fluid of leakage enters in the cavity at two bearing places that overcoat inner edge is filled, and not only have lubricated bearing, also act the effect of heat radiation, entered in draining road by cavity again, be recovered in fuel tank finally by drain tap, it is to avoid the waste of fluid.
Description
Technical field
This utility model belongs to rotary extension device structure technical field of improvement, a kind of durable rotary extension device.
Background technology
Rotary extension device is to be combined by a Double-action reciprocating hydraulic cylinder and a swivel joint, the cylinder body of hydraulic cylinder, rotation
The mandrel of joint rotates together with main frame, and the overcoat of swivel joint is fixed.Its structure is: the cylinder barrel two ends of hydraulic cylinder are respectively mounted
Cylinder head and cylinder bottom, slide in the cavity that three is formed setting-in piston, and the piston rod that piston coaxial is filled externally protrudes from cylinder head,
Being provided with piston rod seal component in the place of cylinder head Yu plunger rod contacts, fixed central spindle on cylinder bottom, two oil ducts in mandrel divide
The short oil road made on the long oil duct Lian Tong do not made on cylinder bottom and cylinder barrel and cylinder bottom.During use, hydraulic cylinder in rotary course,
Its interior piston rod can be the most flexible, such as in the uncoiling coiler of band mill, hydraulic cylinder flexible by cone,
Tapered sleeve makes axle diameter breathing, so also referred to as contract cylinder.In prior art, between overcoat and mandrel, use clearance seal more,
Fluid internal leakage is big, simultaneously because gap is too small, oil cleanliness is required height, if existing outside impurity easily causes in fluid
Set and mandrel stuck phenomenon.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that use rotating seal ring to carry out sealing, clear to fluid
Cleanliness requires the one durable rotary extension device that relatively low, internal drainage can be reclaimed by drain tap.
This utility model adopts the technical scheme that:
A kind of durable rotary extension device, including hydraulic cylinder and swivel joint, the mandrel in described swivel joint is fixed on hydraulic cylinder
Two oil ducts in cylinder bottom surface and mandrel connect with two oil ducts of hydraulic cylinder respectively, it is characterised in that: in described swivel joint
Coat suit in mandrel outer rim, inner edge, overcoat two ends two bearings of setting-in, these two bearings are all sleeved on mandrel outer rim, two
The end face outside of bearing pushes up the inner side end of two end caps being pressed on mandrel suit respectively, makes two hydraulic fluid ports on the coat, should
Two hydraulic fluid ports respectively with two oil ducts conductings making in mandrel, the overcoat inner edge of each hydraulic fluid port both sides is all embedded in a rotatory sealing
Ring, the inner edge of these four rotating seal rings is closely crimped on the outer rim of mandrel.
And, away from overcoat end spiral-lock one enclosing cover of hydraulic cylinder, between retaining between the end cap that the mandrel of this enclosing cover and this side is filled
Gap.
And, in the lower end of overcoat, make a draining road, the two ends in this draining road are respectively with the cavity at the bearing place of homonymy even
Logical, the drain tap that the middle part in this draining road is made with the lower end of overcoat connects.
And, the end cap inner side end near hydraulic cylinder is embedded in the sealing strip of one and this side bearing phase para-position.
Advantage of the present utility model and good effect be:
This utility model, the overcoat inner edge of each hydraulic fluid port both sides in two hydraulic fluid ports of overcoat is all embedded in rotating seal ring, overcoat
And the gap between mandrel becomes big, require to reduce to the cleannes of fluid, do not have the overcoat and the heart caused because of oil residue more
The phenomenon that axle is stuck, and rotating seal ring makes the fluid amount of leakage between the cannelure that on two hydraulic fluid ports and mandrel, para-position is made subtract
Few, do not result in outward leakage, the fluid of these leakages enters in the cavity at two bearing places that overcoat inner edge is filled, and not only moistens
Having slided bearing, also acted the effect of heat radiation, the fluid of leakage is entered in draining road by cavity again, reclaims finally by drain tap
In fuel tank, it is to avoid the waste of fluid, above-mentioned bearing is accurate taper roll bearing, has and automatically adjusts mandrel and overcoat
The function of axiality, reduces mandrel and the processing of overcoat, equipment required precision.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is mandrel and the enlarged drawing of overcoat assembling of Fig. 1.
Detailed description of the invention
Below in conjunction with embodiment, further illustrating this utility model, following embodiment is illustrative, is not determinate,
Protection domain of the present utility model can not be limited with following embodiment.
A kind of durable rotary extension device, as it is shown in figure 1, include hydraulic cylinder and swivel joint, cylinder barrel 5 two ends of hydraulic cylinder are respectively
Installing cylinder head 1 and cylinder bottom 8, slide in the cavity that three is formed setting-in piston 6, and piston outer rim setting-in is for the piston seal sealed
Guide 7, the piston rod 4 that piston coaxial is filled externally protrudes from cylinder head, is provided with in the place of cylinder head with plunger rod contacts
Piston rod packing guide 2, hydraulic cylinder is made long oil duct 3 and short oil road 9, and long oil duct is communicated with bar oil pocket, and short oil road connects
Oil pocket without bar, the mandrel 10 in swivel joint is fixed on two oil ducts 11,17 in the cylinder bottom surface of hydraulic cylinder and mandrel respectively
Connecting with long oil duct and the short oil road of hydraulic cylinder, innovation of the present utility model is: the coat suit in described swivel joint is at core
Axle outer rim, inner edge, overcoat two ends two bearings 19 of setting-in, these two bearings are all sleeved on mandrel outer rim, the outboard end of two bearings
The inner side end of two end caps 18 and 23 being pressed on mandrel suit is pushed up in face respectively, makes two hydraulic fluid ports 12 and 14 on the coat,
These two hydraulic fluid ports respectively with two oil ducts conducting of making in mandrel, in the cannelure 25 that the overcoat inner edge of each hydraulic fluid port both sides is made
All being embedded in a rotating seal ring 20, the inner edge of these four rotating seal rings is closely crimped on the outer rim of mandrel.
In the present embodiment, the purpose of two end caps being positioned at left side and right side is to block bearing, makes the mandrel can in overcoat freely
Rotation, the end cap inner side end setting-in one in left side and the sealing strip 27 of this side bearing phase para-position, the projection in the middle part of the end cap on right side
It is fixed in the groove 24 that this side end of mandrel is made.Two oil ducts in mandrel and two annular oil grooves being positioned at mandrel outer rim
15 are respectively communicated with, these two annular oil grooves and two hydraulic fluid port connections.
Away from overcoat end spiral-lock one enclosing cover 21 of hydraulic cylinder, retention gap between the end cap that the mandrel of this enclosing cover and this side is filled
22, this enclosing cover can play this side end of closing and prevent dust and other impurities from entering inside.
Making a draining road 26 in the lower end of overcoat, the two ends in this draining road cavity with the bearing place of homonymy respectively connects,
The drain tap 16 that the middle part in this draining road is made with the lower end of overcoat connects.
When this utility model uses:
The most each parts assemble, and mandrel rotates along with hydraulic cylinder, and two oil-ins realize oil-feed or oil return after connecting with fuel tank, make
Piston extrapolation or retraction；
2. at small part fluid spinning sealing ring during leakage, in the cavity at bearing place can be entered and flow downward, Zhongdao
Reach at draining road, then returned in fuel tank by drain tap, pipeline.
This utility model, the overcoat inner edge of each hydraulic fluid port both sides in two hydraulic fluid ports of overcoat is all embedded in rotating seal ring, overcoat
And the gap between mandrel becomes big, require to reduce to the cleannes of fluid, do not have the overcoat and the heart caused because of oil residue more
The phenomenon that axle is stuck, and rotating seal ring makes the fluid amount of leakage between the cannelure that on two hydraulic fluid ports and mandrel, para-position is made subtract
Few, do not result in outward leakage, the fluid of these leakages enters in the cavity at two bearing places that overcoat inner edge is filled, and not only moistens
Having slided bearing, also acted the effect of heat radiation, the fluid of leakage is entered in draining road by cavity again, reclaims finally by drain tap
In fuel tank, it is to avoid the waste of fluid, above-mentioned bearing is accurate taper roll bearing, has and automatically adjusts mandrel and overcoat
The function of axiality, reduces mandrel and the processing of overcoat, equipment required precision.
Claims (4)
1. a durable rotary extension device, including hydraulic cylinder and swivel joint, the mandrel in described swivel joint is fixed on hydraulic cylinder
Cylinder bottom surface and mandrel in two oil ducts connect with two oil ducts of hydraulic cylinder respectively, it is characterised in that: described swivel joint
In coat suit in mandrel outer rim, inner edge, overcoat two ends two bearings of setting-in, these two bearings are all sleeved on mandrel outer rim, two
The end face outside of individual bearing pushes up the inner side end of two end caps being pressed on mandrel suit respectively, makes two hydraulic fluid ports on the coat,
These two hydraulic fluid ports respectively with two oil ducts conducting of making in mandrel, the overcoat inner edge of each hydraulic fluid port both sides is all embedded in a rotation close
Seal ring, the inner edge of these four rotating seal rings is closely crimped on the outer rim of mandrel.
One the most according to claim 1 durable rotary extension device, it is characterised in that: the overcoat end away from hydraulic cylinder is buckled
Fill an enclosing cover, retention gap between the end cap that the mandrel of this enclosing cover and this side is filled.
One the most according to claim 1 and 2 durable rotary extension device, it is characterised in that: make in the lower end of overcoat
One draining road, the two ends in this draining road cavity with the bearing place of homonymy respectively connects, the middle part in this draining road with under overcoat
The drain tap connection that end is made.
One the most according to claim 3 durable rotary extension device, it is characterised in that: near the end cap medial extremity of hydraulic cylinder
Face is embedded in the sealing strip of one and this side bearing phase para-position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361965.8U CN205715057U (en) | 2016-04-25 | 2016-04-25 | A kind of durable rotary extension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361965.8U CN205715057U (en) | 2016-04-25 | 2016-04-25 | A kind of durable rotary extension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715057U true CN205715057U (en) | 2016-11-23 |
Family
ID=57293139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620361965.8U Expired - Fee Related CN205715057U (en) | 2016-04-25 | 2016-04-25 | A kind of durable rotary extension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715057U (en) |
-
2016
- 2016-04-25 CN CN201620361965.8U patent/CN205715057U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205715056U (en) | A kind of durable rotary extension device with displacement transducer | |
| CN205715057U (en) | A kind of durable rotary extension device | |
| CN204396190U (en) | A kind of horizontal type scraper centrifuger rear bearing sealing device | |
| CN202561338U (en) | Rotating joint and oil cylinder having the rotating joint | |
| CN204140079U (en) | A kind of hinge seal device and the shield machine comprising hinge seal device | |
| CN103423538A (en) | Hydraulic swivel joint with high leak tightness | |
| CN204239509U (en) | A kind of universal joint of oil-leakage-prevention | |
| CN206092701U (en) | A lubricating shaft sleeve for hydraulic pressure is cut | |
| CN205479332U (en) | Leak protection oil bearing device | |
| CN205978456U (en) | Adopt digit control machine tool rotary seal device of shaft seal form | |
| CN204372124U (en) | Two-stage oil seal assembly of speed reducer | |
| CN206419357U (en) | Anti-leakage type bearing (ball) cover and thin oil lubricant bearing housing | |
| CN204279907U (en) | A kind of novel rudder bearer structure | |
| CN209414393U (en) | A kind of multipurpose protection tool | |
| CN203230735U (en) | Shaft sleeve | |
| CN206009470U (en) | Flat cold-rolled sheet flattener backing roll sealing device | |
| CN204533188U (en) | A kind of deep groove ball bearing of high sealing | |
| CN205689009U (en) | A kind of type gate hinge | |
| CN204372178U (en) | A kind of oil sealing with double-layer sealing structure | |
| CN206889164U (en) | Gear motor solid box | |
| CN104141629B (en) | A kind of oil pump bearing housing lubrication system | |
| CN205299025U (en) | Gyro wheel cooling and lubrication mechanism | |
| CN204040981U (en) | Polish rod sealing device for oil production well | |
| CN207018794U (en) | Circulation oil jet lubrication drum Gear Couplings' in leather cup sleeve seal formula | |
| CN206299996U (en) | Bearing oil inlet nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20170425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |