CN201687801U - Sealing swivel joint - Google Patents
Sealing swivel joint Download PDFInfo
- Publication number
- CN201687801U CN201687801U CN2010201278079U CN201020127807U CN201687801U CN 201687801 U CN201687801 U CN 201687801U CN 2010201278079 U CN2010201278079 U CN 2010201278079U CN 201020127807 U CN201020127807 U CN 201020127807U CN 201687801 U CN201687801 U CN 201687801U
- Authority
- CN
- China
- Prior art keywords
- ball bearing
- deep groove
- groove ball
- fittings body
- oil duct
- 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
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Abstract
The utility model relates to a sealing swivel joint, which comprises a spinning spindle and a joint body, the spinning spindle is assembled in the joint body, a first deep groove ball bearing and a second deep groove ball bearing are sleeved on the spinning spindle, inner rings of the first deep groove ball bearing and the second deep groove ball bearing are connected with the spinning spindle, and rotate with the spinning spindle; outer rings of the first deep groove ball bearing and the second deep groove ball bearing are connected and fixed with an inner hole of the joint body by means of interference fit; a certain gap is retained between the spinning spindle and the joint body; and a first oil port and a second oil port are disposed on the joint body, a first oil duct and a second oil duct are disposed on the spinning spindle, the first oil port is communicated to a stock cavity of a hydraulic cylinder through the first oil duct, and the second oil port is communicated to a stockless cavity of the hydraulic cylinder through the second oil duct. The utility model has ingenious and reasonable structure and good running effect, can effectively reduce leakage of working medium caused by breakage of seals, and can avoid abrasion between the spinning spindle and the joint body due to direct contact.
Description
Technical field
The utility model relates to a kind of hydraulic connectors, specifically is a kind of seal swivel joint that is used on the oil hydraulic cylinder.
Background technique
In the prior art, the seal swivel joint that is used on the oil hydraulic cylinder mainly is made up of rotation mandrel, fittings body and Sealing etc.After operation a period of time, Sealing is easy to wearing and tearing, behind the sealing part abrasion, can cause the leakage of working medium when rotated, and when rapid circular movement, it is comparatively serious to generate heat owing to rubbing between rotation mandrel and the fittings body, occurs " locking " phenomenon easily, thereby only is applicable to the occasion of low speed rotation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, the seal swivel joint that a kind of structure is ingenious rationally, operational effect is good is provided, the sealing swivel joint can effectively reduce the leakage that damages the working medium that causes because of Sealing, avoid rotating and directly contact between mandrel and the fittings body and wear and tear, can satisfy the job requirement of high speed rotating.
The technological scheme that provides according to the utility model, described seal swivel joint comprises rotation mandrel and fittings body, the rotation mandrel is assemblied in the fittings body, it is characterized in that, suit first deep groove ball bearing, second deep groove ball bearing on the rotation mandrel, the inner ring of first deep groove ball bearing, second deep groove ball bearing is connected with the rotation mandrel, rotates with the rotation mandrel; The outer ring of first deep groove ball bearing, second deep groove ball bearing and the endoporus of fittings body are connected and fixed by interference fit; There is certain interval between rotation mandrel and the fittings body; Offer first hydraulic fluid port and second hydraulic fluid port on the fittings body, rotation offers first oil duct and second oil duct on the mandrel, and first hydraulic fluid port is communicated to the rod chamber of oil hydraulic cylinder by first oil duct, and second hydraulic fluid port is communicated to the rodless cavity of oil hydraulic cylinder by second oil duct.
As further improvement of the utility model, offer the leakage hydraulic fluid port on the described end cap, offer the leakage oil duct on the described rotation mandrel, reveal hydraulic fluid port and be connected with the leakage oil duct.
As further improvement of the utility model, the end that first deep groove ball bearing is housed of described fittings body is equipped with rotating seal ring by saturating lid sealing between the saturating lid and first deep groove ball bearing; The end that second deep groove ball bearing is housed of fittings body is equipped with seal ring by end bracket enclosed between end cap and the fittings body.
As further improvement of the utility model, described rotating seal ring is made up of clamping section, sealed lip and extension spring, and clamping section and sealed lip are combined closely, and extension spring is sleeved on the sealed lip.
As further improvement of the utility model, described clamping section adopts canvas filler rubber to make; Described sealed lip adopts rubber to make.
The utility model compared with prior art, advantage is: (1), rotation mandrel and fittings body have the gap, can avoid rotating directly contacting between mandrel and the fittings body and wearing and tearing, and influence flexibility of revolution; (2), hydraulic oil circulates between rotation mandrel and fittings body, can improve counterrotating flexibility, has cooling action again, can reduce frictional heating, guarantees the swivel joint continuous operation; (3), extension spring is arranged in the rotating seal ring, increase the radial compaction power of sealed lip, can prevent the external leakage of working medium, guarantee swivel joint fast rotational under High Temperature High Pressure the rotation mandrel; (4), simple and reasonable for structure, compact, be easy to safeguard that life cycle is long.
Description of drawings
Fig. 1 is a structural front view of the present utility model.
Fig. 2 is the A portion enlarged diagram among Fig. 1.
Description of reference numerals: 1-rotation mandrel, 2-rotating seal ring, 2a-clamping section, 2b-sealed lip, 2c-extension spring, 3-first deep groove ball bearing, 4-first hydraulic fluid port, 5-second hydraulic fluid port, 6-fittings body, 7-second deep groove ball bearing, 8-leakage hydraulic fluid port, 9-end cap, 10-first oil duct, 11-second oil duct, 12-reveal oil duct, 13-covers thoroughly.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in Figure 1, the utility model mainly by rotation mandrel 1, rotating seal ring 2, first deep groove ball bearing 3, fittings body 6, second deep groove ball bearing 7, end cap 9, cover component such as 13 thoroughly and form.
As shown in Figure 1, be assemblied in the fittings body 6 on the rotation mandrel 1, the inner ring of suit first deep groove ball bearing 3, second deep groove ball bearing, 7, the first deep groove ball bearings 3, second deep groove ball bearing 7 is connected with rotation mandrel 1 on the rotation mandrel 1, rotates with rotation mandrel 1; The outer ring of first deep groove ball bearing 3, second deep groove ball bearing 7 and the endoporus of fittings body 6 are connected and fixed by interference fit, and fittings body 6 keeps transfixion; There is certain interval between rotation mandrel 1 and the fittings body 6, to guarantee that working medium circulates in the gap; Offer first hydraulic fluid port 4 and second hydraulic fluid port 5 on the fittings body 6, offer first oil duct 10 and second oil duct 11 on the described rotation mandrel 1, first hydraulic fluid port 4 is communicated to the rod chamber of oil hydraulic cylinder by first oil duct 10, and second hydraulic fluid port 5 is communicated to the rodless cavity of oil hydraulic cylinder by second oil duct 11.
As shown in Figure 1, the end that first deep groove ball bearing 3 is housed of described fittings body 6 covers thoroughly between 13 and first deep groove ball bearing 3 rotating seal ring 2 is housed by saturating lid 13 sealings; The end that second deep groove ball bearing 7 is housed of fittings body 6 is equipped with seal ring by end cap 9 sealings between end cap 9 and the fittings body 6; Offer on the end cap 9 and reveal hydraulic fluid port 8, offer on the rotation mandrel 1 and reveal oil duct 12, revealing hydraulic fluid port 8 is connected with leakage oil duct 12, swivel joint is when work, working medium between the slit of rotation mandrel 1 and fittings body 6 can release via revealing hydraulic fluid port 8, the heat that releases generation in the time of can taking away swivel joint work of working medium.
As shown in Figure 2, described rotating seal ring 2 is made up of clamping section 2a, sealed lip 2b and extension spring 2c; Clamping section 2a adopts canvas filler rubber to make, and is very durable; Sealed lip 2b adopts rubber to make, itself and clamping section 2a are closely linked, and extension spring 2c is sleeved on the sealed lip 2b, are used to increase the radial compaction power of sealed lip 2b to rotation mandrel 1, prevented the external leakage of hydraulic oil, swivel joint can be run up.
During swivel joint work, 4 oil-feeds of first hydraulic fluid port or 5 oil-feeds of second hydraulic fluid port, hydraulic oil flows in the gap between rotation mandrel 1 and fittings body 6, form one deck oil film, the rotation mandrel 1 and first deep groove ball bearing 3, when second deep groove ball bearing 7 is made high speed rotary motion with equipment work-piece, hydraulic oil has played effect lubricated and cooling, avoids rotating the friction damage that directly contacts generation between mandrel 1 and the fittings body 6, has guaranteed the long-term use of swivel joint.
Claims (5)
1. seal swivel joint, comprise rotation mandrel (1) and fittings body (6), rotation mandrel (1) is assemblied in the fittings body (6), it is characterized in that, rotation mandrel (1) is gone up suit first deep groove ball bearing (3), second deep groove ball bearing (7), the inner ring of first deep groove ball bearing (3), second deep groove ball bearing (7) is connected with rotation mandrel (1), rotates with rotation mandrel (1); The endoporus of the outer ring of first deep groove ball bearing (3), second deep groove ball bearing (7) and fittings body (6) is connected and fixed by interference fit; There is certain interval between rotation mandrel (1) and the fittings body (6); Offer first hydraulic fluid port (4) and second hydraulic fluid port (5) on the fittings body (6), offer first oil duct (10) and second oil duct (11) on the rotation mandrel (1), first hydraulic fluid port (4) is communicated to the rod chamber of oil hydraulic cylinder by first oil duct (10), and second hydraulic fluid port (5) is communicated to the rodless cavity of oil hydraulic cylinder by second oil duct (11).
2. seal swivel joint as claimed in claim 1, its feature also is, the end that first deep groove ball bearing (3) is housed of described fittings body (6) is equipped with rotating seal ring (2) by saturating lid (13) sealing between saturating lid (13) and first deep groove ball bearing (3); The end that second deep groove ball bearing (7) is housed of fittings body (6) is equipped with seal ring by end cap (9) sealing between end cap (9) and the fittings body (6).
3. seal swivel joint as claimed in claim 2, its feature also are, offer on the described end cap (9) and reveal hydraulic fluid port (8), offer on the described rotation mandrel (1) to reveal oil duct (12), reveal hydraulic fluid port (8) and are connected with leakage oil duct (12).
4. seal swivel joint as claimed in claim 2, its feature also is, described rotating seal ring (2) is made up of clamping section (2a), sealed lip (2b) and extension spring (2c), combine closely with sealed lip (2b) in clamping section (2a), extension spring (2c) is sleeved on the sealed lip (2b).
5. seal swivel joint as claimed in claim 4, its feature are that also described clamping section (2a) adopts canvas filler rubber to make; Described sealed lip (2b) adopts rubber to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201278079U CN201687801U (en) | 2010-03-10 | 2010-03-10 | Sealing swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201278079U CN201687801U (en) | 2010-03-10 | 2010-03-10 | Sealing swivel joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687801U true CN201687801U (en) | 2010-12-29 |
Family
ID=43376084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201278079U Expired - Fee Related CN201687801U (en) | 2010-03-10 | 2010-03-10 | Sealing swivel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687801U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669456A (en) * | 2021-09-27 | 2021-11-19 | 益路恒丰衡水沥青科技有限公司 | Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism |
| CN115013380A (en) * | 2022-06-23 | 2022-09-06 | 苏州鑫旭合智能科技有限公司 | Double-stage adjustable large-stroke hydraulic cylinder |
| CN115111223A (en) * | 2022-06-15 | 2022-09-27 | 北京市液压技术研究所有限公司 | Rotary joint for hydraulic cylinder and operation method thereof |
-
2010
- 2010-03-10 CN CN2010201278079U patent/CN201687801U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669456A (en) * | 2021-09-27 | 2021-11-19 | 益路恒丰衡水沥青科技有限公司 | Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism |
| CN113669456B (en) * | 2021-09-27 | 2024-03-26 | 益路恒丰衡水沥青科技有限公司 | Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism |
| CN115111223A (en) * | 2022-06-15 | 2022-09-27 | 北京市液压技术研究所有限公司 | Rotary joint for hydraulic cylinder and operation method thereof |
| CN115013380A (en) * | 2022-06-23 | 2022-09-06 | 苏州鑫旭合智能科技有限公司 | Double-stage adjustable large-stroke hydraulic cylinder |
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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: 20101229 Termination date: 20180310 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |