CN202561338U - Rotating joint and oil cylinder having the rotating joint - Google Patents
Rotating joint and oil cylinder having the rotating joint Download PDFInfo
- Publication number
- CN202561338U CN202561338U CN2012201347843U CN201220134784U CN202561338U CN 202561338 U CN202561338 U CN 202561338U CN 2012201347843 U CN2012201347843 U CN 2012201347843U CN 201220134784 U CN201220134784 U CN 201220134784U CN 202561338 U CN202561338 U CN 202561338U
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- oil
- swivel joint
- cylinder
- rotating
- hydraulic fluid
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Abstract
A rotating joint and an oil cylinder having the rotating joint are disclosed, wherein the rotating joint includes a rotating shaft and a rotating sleeve fitted over the rotating shaft; the rotating shaft is arranged therein with a first oil path and a second oil path not mutually communicated with each other, and is provided with a shaft oil port at outer side of the part exposed out of the rotating sleeve; the shaft oil port communicates with the first oil path; one end of the rotating shaft is provided with an oil cylinder connection head; the second oil path is provided with an opening at the oil cylinder connection head; the outer side of the rotating sleeve is provided with a first oil port and a second oil port; the first oil port communicates with the first oil path; a sleeve second oil path communicates with the second oil path; at both sides of the first oil port and at both sides of the second oil port are arranged rotating oil seals, respectively; and the rotating seals are embedded in the rotating sleeve inner wall and in contact with the rotating shaft. The oil cylinder having the rotating joint adopts the above rotating joint. The rotating joint of the utility model uses the rotating oil seal to replace the traditional bearing, to achieve simple structure and reduced volume, facilitate miniaturization of the equipment, make oil leakage not easy and realize low manufacture cost.
Description
Technical field
The utility model relates to technical field of hydraulic oil cylinder, specifically, relates to a kind of swivel joint and has the oil cylinder of swivel joint.
Background technique
In some oil cylinder application apparatus; Oil cylinder need be followed machinery and rotated to be used; Oil cylinder need bulky control oil channel from both sides symmetry input hydraulic pressure oil because control oil channel is bulky and receive the restriction of structure, its can't with the oil cylinder integrated design; Therefore, must adopt pipeline to realize connecting between the two.Simultaneously again since oil cylinder when pressurization; There is the elongation of trace in whole cylinder mechanism, make oil cylinder that certain rotation pivot angle arranged again, and control oil channel is fixed; So should not adopt being rigidly connected of steel pipe etc. between oil cylinder and the control oil channel; But exist the high-pressure high-flow sebific duct of certain flexibility torsional deformation to fix connection and adopt, but adopt the big flow sebific duct of this conventional high-tension to fix the mode that connects oil cylinder and control oil channel, need to rotate during owing to oil cylinder work as the hydraulic fluid port linkage structure; Oil pipe can wind up, and makes oil cylinder can't carry out work.
The solution of existing technology is, a swivel joint is set between oil cylinder and control oil channel, and this swivel joint mainly is divided into axle sleeve and running shaft two-part; Be rotationally connected through bearing between axle sleeve and the running shaft; Axle sleeve is fixed, and running shaft and rotating hydraulic cylinder are affixed, rotate with oil cylinder; Hydraulic fluid port is arranged on the axle sleeve, and the pipeline that between the oil cylinder hydraulic fluid port, connects of control oil channel just need not be along with oil cylinder rotates like this.But its manufacture cost of the swivel joint of said structure is higher, is applicable to the oil cylinder of high pressure, high speed rotating, if be used for low pressure, low speed rotation oil cylinder then comparatively waste.
Summary of the invention
One of purpose of the utility model is: overcome defective of the prior art, a kind of swivel joint is provided, this rotary joint structure is simple, and volume is little, and low cost of manufacture is applicable to mesolow, the oil cylinder of middle low speed rotation.
Two of the purpose of the utility model is: overcome defective of the prior art, a kind of oil cylinder that has swivel joint is provided, this has the oil cylinder of swivel joint; Oil pipe can not twine during use; And simple in structure, volume is little, and is cheap for manufacturing cost; Be applicable to mesolow, the machinery of middle low speed rotation.
For achieving the above object, the utility model is realized through following technological scheme.
A kind of swivel joint comprises running shaft, is socketed on the outer rotary sleeve of running shaft, is provided with disconnected first oil circuit and second oil circuit mutually in the running shaft; The outer side surface that running shaft exposes the rotary sleeve part offers the shafting oil mouth, and the shafting oil mouth is communicated with first oil circuit, and running shaft one end is provided with the oil cylinder connecting head; Second oil circuit is provided with opening at oil cylinder connecting head place, and the rotary sleeve outer side surface offers first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port is communicated with first oil circuit; Overlapping second oil circuit is communicated with second oil circuit; The both sides of the both sides of first hydraulic fluid port and second hydraulic fluid port are provided with a rotary oil seal respectively, and rotary oil seal is embedded in the rotary sleeve inwall and touches in running shaft.
Further, rotary oil seal is the rotary oil seal of wear-resisting type.
Further, running shaft one end is provided with the nut connecting head, and the nut connecting head is threadedly connected to nut.
Further, running shaft is provided with the shaft shoulder, and shaft shoulder diameter is greater than the axle sleeve diameter of bore, and rotary sleeve is arranged between the shaft shoulder and the nut.
Further, between the shaft shoulder and the rotary sleeve, and be respectively equipped with back-up ring between nut and the rotary sleeve.
A kind of oil cylinder that has swivel joint; Comprise swivel joint, cylinder body, piston, piston rod and protecgulum; Cylinder body is provided with the piston cavity of an end opening; Piston is divided into first cavity that is made up of protecgulum, cylinder body and piston and second cavity that is made up of cylinder body and piston along the casing wall slip and with piston cavity in piston cavity, swivel joint is above-mentioned a kind of swivel joint, and the oil cylinder connecting head of swivel joint is fixed in cylinder body; Second oil circuit of swivel joint is communicated with second cavity, and the shafting oil mouth of swivel joint is communicated with first cavity through oil pipe.
Further, the protecgulum inboard also is provided with inner cap.
Further, the cylinder side wall of corresponding first cavity is provided with the cylinder hydraulic fluid port, and the cylinder hydraulic fluid port is connected with the shafting oil mouth through oil pipe.
Further, the cylinder hydraulic fluid port is connected through the cutting ferrule elbow connection with oil pipe.
Further, the shafting oil mouth is connected through the cutting ferrule straight joint with oil pipe.
The beneficial effect of the utility model is:
Compared with prior art, the utlity model has following characteristics:
A kind of swivel joint of the utility model replaces habitual bearing with rotary oil seal, the structure of swivel joint is become simple, volume reduces, and helps the miniaturization of equipment, not easy oil leakage, low cost of manufacture.
A kind of oil cylinder that has swivel joint of the utility model, it is simple in structure, and volume is little, and is oil-proof, and low cost of manufacture is fixed on the machinery equipment that needs rotation, and the oil pipe of fuel feeding need not and then rotate, so oil pipe can not twine lucky.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, is used to explain the utility model with the embodiment of the utility model, does not constitute the restriction to the utility model, in the accompanying drawings:
Fig. 1 is a kind of rotary joint structure schematic representation.
Fig. 2 is a kind of swivel joint cross-sectional view.
Fig. 3 is the oil cylinder side view that has swivel joint.
Fig. 4 is the cross-sectional view at A-A place among Fig. 3.
Include among Fig. 1, Fig. 2 with lower component:
1---rotary sleeve, 11---first hydraulic fluid port, 12---second hydraulic fluid port, 13---rotary oil seal,
2---running shaft, 21---first oil circuit, 22---second oil circuit, 23---shafting oil mouth, 24---oil cylinder connecting head, 25---nut connecting head, the 26---shaft shoulder,
3---nut,
4---back-up ring;
Include among Fig. 3, Fig. 4 with lower component:
5---cylinder body, 51---cylinder hydraulic fluid port, 52---swivel joint, 53---oil pipe, 54---cutting ferrule elbow connection, 55---cutting ferrule straight joint,
6---piston,
7---piston rod,
8---protecgulum,
9---inner cap,
10---piston cavity, 101---first cavity, 102---second cavitys.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
Embodiment 1:
The embodiment 1 of the described a kind of swivel joint of the utility model, as depicted in figs. 1 and 2, comprise running shaft 2, be socketed on the rotary sleeve 1 outside the running shaft 2; Be provided with disconnected first oil circuit 21 and second oil circuit 22 mutually in the running shaft 2, the outer side surface that running shaft 2 exposes rotary sleeve 1 part offers shafting oil mouth 23, and shafting oil mouth 23 is communicated with first oil circuit 21; Running shaft 2 one ends are provided with oil cylinder connecting head 24; Second oil circuit 22 is provided with opening at oil cylinder connecting head 24 places, and rotary sleeve 1 outer side surface offers first hydraulic fluid port 11 and second hydraulic fluid port, 12, the first hydraulic fluid ports 11 are communicated with first oil circuit 21; Overlapping second oil circuit 22 is communicated with second oil circuit 22; The both sides of the both sides of first hydraulic fluid port 11 and second hydraulic fluid port 12 are provided with a rotary oil seal 13 respectively, and rotary oil seal 13 is embedded in rotary sleeve 1 inwall and touches in running shaft 2.
Nut connecting head 25 is threadedly connected to nut 3.Make swivel joint 52 be convenient to assembling production and dismounting maintenance.
The shaft shoulder 26 diameters are greater than the axle sleeve diameter of bore, and rotary sleeve 1 is arranged between the shaft shoulder 26 and the nut 3.Be respectively equipped with back-up ring 4 between nut 3 and the rotary sleeve 1.The shaft shoulder 26 limits the firmly position of rotary sleeve 1 with nut 3.
A kind of swivel joint of the utility model replaces habitual bearing with rotary oil seal 13, the structure of swivel joint 52 is become simple, volume reduces.Because high speed rotary grinding can produce a large amount of heat, therefore, the utility model only is applicable to mesolow, and the oil cylinder of middle and slow speed of revolution uses, and helps the miniaturization of equipment, not easy oil leakage, low cost of manufacture.
Embodiment 2:
The described a kind of oil cylinder that has swivel joint of the utility model; Like Fig. 3 and shown in Figure 4; Comprise swivel joint 52, cylinder body 5, piston, piston rod 7 and protecgulum 8; Cylinder body 5 is provided with the piston cavity 10 of an end opening, and piston 6 is divided into first cavity 101 that is made up of protecgulum 8, cylinder body 5 and piston 6 and second cavity 102 that is made up of cylinder body 5 and piston 6 along the casing wall slip and with piston cavity 10 in piston cavity 10, and the oil cylinder connecting head 24 of swivel joint 52 is fixed in cylinder body 5; Second oil circuit 22 of swivel joint 52 is communicated with second cavity 102, and the shafting oil mouth 23 of swivel joint 52 is communicated with first cavity 101 through oil pipe 53.
Concrete; During use, running shaft 2 is fixed in cylinder body 5, rotates with oil cylinder; Rotary sleeve 1 is fixed; First hydraulic fluid port 11 that is opened in rotary sleeve 1 is connected control oil channel with second hydraulic fluid port through oil pipe, because rotary sleeve 1 is fixed, the oil pipe that therefore is connected in first hydraulic fluid port 11 and second hydraulic fluid port 12 also need not rotate with oil cylinder.
Cylinder hydraulic fluid port 51 is connected through cutting ferrule elbow connection 54 with oil pipe 53.Shafting oil mouth 23 is connected through cutting ferrule straight joint 55 with oil pipe 53.According to actual needs, oil pipe 53 is arranged and designed.
A kind of oil cylinder that has swivel joint of the utility model, it is simple in structure, and volume is little; Oil-proof, low cost of manufacture is applicable to mesolow; The machinery of middle and slow speed of revolution; Be fixed on the machinery equipment that needs rotation, the oil pipe 53 of fuel feeding need not and then rotate, so oil pipe 53 can not twine lucky.
What should explain at last is: more than be merely the preferred embodiment of the utility model; Be not limited to the utility model; Although the utility model has been carried out detailed explanation with reference to embodiment; For a person skilled in the art, it still can be made amendment to the technological scheme that aforementioned each embodiment put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. a swivel joint comprises running shaft, is socketed on the outer rotary sleeve of said running shaft, it is characterized in that: be provided with disconnected first oil circuit and second oil circuit mutually in the said running shaft; The outer side surface that said running shaft exposes the rotary sleeve part offers the shafting oil mouth; Said shafting oil mouth is communicated with said first oil circuit, and said running shaft one end is provided with the oil cylinder connecting head, and said second oil circuit is provided with opening at said oil cylinder connecting head place; Said rotary sleeve outer side surface offers first hydraulic fluid port and second hydraulic fluid port; Said first hydraulic fluid port is communicated with said first oil circuit, and said cover second oil circuit is communicated with said second oil circuit, the both sides of the both sides of said first hydraulic fluid port and second hydraulic fluid port; A rotary oil seal is set respectively, and said rotary oil seal is embedded in said rotary sleeve inwall and touches in said running shaft.
2. a kind of swivel joint according to claim 1 is characterized in that: said rotary oil seal is the rotary oil seal of wear-resisting type.
3. a kind of swivel joint according to claim 1 is characterized in that: said running shaft one end is provided with the nut connecting head, and said nut connecting head is threadedly connected to nut.
4. a kind of swivel joint according to claim 3 is characterized in that: said running shaft is provided with the shaft shoulder, and said shaft shoulder diameter is greater than said axle sleeve diameter of bore, and said rotary sleeve is arranged between the said shaft shoulder and the said nut.
5. a kind of swivel joint according to claim 4 is characterized in that: between the said shaft shoulder and the said rotary sleeve, and be respectively equipped with back-up ring between said nut and the said rotary sleeve.
6. oil cylinder that has swivel joint; It is characterized in that: comprise swivel joint, cylinder body, piston, piston rod and protecgulum; Said cylinder body is provided with the piston cavity of an end opening; Said piston is divided into first cavity that is made up of said protecgulum, cylinder body and piston and second cavity that is made up of said cylinder body and piston along the casing wall slip and with said piston cavity in said piston cavity; Said swivel joint is each described a kind of swivel joint in the claim 1 to 5; The oil cylinder connecting head of said swivel joint is fixed in said cylinder body, and second oil circuit of said swivel joint is communicated with said second cavity, and the shafting oil mouth of said swivel joint is communicated with said first cavity through oil pipe.
7. a kind of oil cylinder that has swivel joint according to claim 6 is characterized in that: said protecgulum inboard also is provided with inner cap.
8. a kind of oil cylinder that has swivel joint according to claim 6, it is characterized in that: the cylinder side wall of said corresponding first cavity is provided with the cylinder hydraulic fluid port, and said cylinder hydraulic fluid port is connected with said shafting oil mouth through oil pipe.
9. a kind of oil cylinder that has swivel joint according to claim 8 is characterized in that: said cylinder hydraulic fluid port is connected through the cutting ferrule elbow connection with said oil pipe.
10. a kind of oil cylinder that has swivel joint according to claim 8 is characterized in that: said shafting oil mouth is connected through the cutting ferrule straight joint with said oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201347843U CN202561338U (en) | 2012-04-01 | 2012-04-01 | Rotating joint and oil cylinder having the rotating joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201347843U CN202561338U (en) | 2012-04-01 | 2012-04-01 | Rotating joint and oil cylinder having the rotating joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561338U true CN202561338U (en) | 2012-11-28 |
Family
ID=47210997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201347843U Expired - Fee Related CN202561338U (en) | 2012-04-01 | 2012-04-01 | Rotating joint and oil cylinder having the rotating joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561338U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528599A (en) * | 2014-11-13 | 2015-04-22 | 安徽乐库智能停车设备有限公司 | Safe and wear-resistant oil supply system of lifting device |
| CN112594469A (en) * | 2020-11-24 | 2021-04-02 | 中国人民解放军96901部队24分队 | Variable throttling rotary joint based on hydraulic cylinder pin shaft |
| WO2023019784A1 (en) * | 2021-08-16 | 2023-02-23 | 江苏鲁汶仪器有限公司 | Magnetic-fluid-sealing-type shaft |
-
2012
- 2012-04-01 CN CN2012201347843U patent/CN202561338U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528599A (en) * | 2014-11-13 | 2015-04-22 | 安徽乐库智能停车设备有限公司 | Safe and wear-resistant oil supply system of lifting device |
| CN112594469A (en) * | 2020-11-24 | 2021-04-02 | 中国人民解放军96901部队24分队 | Variable throttling rotary joint based on hydraulic cylinder pin shaft |
| WO2023019784A1 (en) * | 2021-08-16 | 2023-02-23 | 江苏鲁汶仪器有限公司 | Magnetic-fluid-sealing-type shaft |
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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: 20121128 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |