CN112555548A - Novel central swivel joint for engineering machinery - Google Patents
Novel central swivel joint for engineering machinery Download PDFInfo
- Publication number
- CN112555548A CN112555548A CN202011501106.1A CN202011501106A CN112555548A CN 112555548 A CN112555548 A CN 112555548A CN 202011501106 A CN202011501106 A CN 202011501106A CN 112555548 A CN112555548 A CN 112555548A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- swivel joint
- guide ring
- grease groove
- novel central
- 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.)
- Pending
Links
- 239000004519 grease Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 229920002635 polyurethane Polymers 0.000 claims abstract description 12
- 239000004814 polyurethane Substances 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 9
- 235000014121 butter Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
- F16L39/06—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies of the multiline swivel type, e.g. comprising a plurality of axially mounted modules
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention discloses a novel central rotary joint for engineering machinery, which comprises a cylinder body, wherein an electric brush is arranged at the top of the cylinder body, O-shaped rings are symmetrically arranged at the top of the cylinder body, and a polyurethane GREEN ring, an upper-end grease groove, a guide ring A, a rotary sealing structure, a guide ring B and a lower-end grease groove are arranged in the cylinder body from top to bottom; the inner side of the top of the cylinder body is provided with a pressing plate, the bottom of the cylinder body is symmetrically provided with a V-shaped sealing structure, the bottom of the cylinder body is symmetrically provided with a mandrel, the middle position of the left side of the cylinder body is provided with an embedded oil port A, the middle position of the left side of the cylinder body is provided with an embedded oil port B, and the bottom of the cylinder body is provided with an oil; the invention has the advantages of good dustproof and waterproof performance, tight fit, small volume, compact structure, difficult rusting of the mandrel and the inside of the cylinder body and high reliability.
Description
Technical Field
The invention relates to a novel central rotary joint for engineering machinery, and belongs to the technical field of engineering machinery.
Background
The existing central rotary joint applied to engineering machinery has the problems that the upper end has poor waterproof performance and the lower end basically has no waterproof structure, and the factors such as the structure of a rotary table, the weather condition and the like have great influence on the central rotary joint; if two oil return paths exist, the general drift diameter of the oil return path is larger, so that the volume of the central rotary joint is greatly increased, the volume of the central rotary joint for engineering machinery is larger, and the cylinder is externally connected with a welding joint, so that the hidden danger of oil leakage is caused; the joints of the distribution body are generally welding joints, and welding spots can cause deformation of the cylinder body and cause hidden danger of oil leakage; once the turntable structure is exposed outside, the upper end and the lower end of the turntable structure are corroded due to water vapor entering the turntable structure after being drenched, and abnormal sound occurs when the turntable structure rotates.
The structure of the central rotary joint on the market is basically that the upper end of the central rotary joint is formed by an electric brush and a rubber pad, and then the upper end of the central rotary joint is sealed in a rotating mode through a guide ring, and the upper end of the central rotary joint is only waterproof by the rubber pad, so that the waterproof performance of the rubber pad is poor, the rubber pad is easy to oxidize, and the waterproof performance is basically lost after oxidation.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a novel central rotary joint for engineering machinery, which has the advantages of good dustproof and waterproof performance, tight fit, small volume, compact structure, difficult rusting of a core shaft and the interior of a cylinder body and high reliability.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a novel engineering machine tool is with center swivel joint, includes the cylinder body, its characterized in that: the top of the cylinder body is provided with an electric brush, the top of the cylinder body is provided with an O-shaped ring, and the inside of the cylinder body is provided with a polyurethane GREEN ring, an upper-end grease groove, a guide ring A, a rotary sealing structure, a guide ring B and a lower-end grease groove from top to bottom;
the hydraulic cylinder is characterized in that a pressing plate is arranged on the inner side of the top of the cylinder body, a V-shaped sealing structure is arranged at the bottom of the cylinder body, a mandrel is arranged in the cylinder body, an embedded oil port A is arranged at the middle position of the left side of the cylinder body, and an embedded oil port B is arranged at the middle position of the left side of the cylinder body;
the bottom of the cylinder body is provided with a C oil return path.
Furthermore, the embedded type A oil port and the embedded type B oil port share the C oil return drift diameter.
Furthermore, the polyurethane GREEN, the upper end grease groove, the guide ring A, the rotary sealing structure, the guide ring B and the lower end grease groove are respectively provided with one.
Further, the two polyurethane GREEN rings, the upper end grease groove, the guide ring A, the rotary sealing structure, the guide ring B and the lower end grease groove are arranged on the outer side of the mandrel.
Further, the mandrel is provided with a boss.
Further, the outer diameter of the boss is larger than that of the cylinder body.
Further, a wear-resistant pad is arranged below the lower end grease groove.
Furthermore, grease is filled in the upper end grease groove and the lower end grease groove.
The invention has the beneficial effects that:
the dustproof and waterproof structure has the advantages of good dustproof and waterproof performance, tight matching, small volume, compact structure, difficult rusting of the mandrel and the inside of the cylinder body and high reliability.
Drawings
Fig. 1 is a schematic front structural view of a novel central swivel joint for construction machinery according to the present invention.
In the figure, 1, a brush; 2. an O-shaped ring; 3. pressing a plate; 4. polyurethane greige circles; 5. an upper end oil groove; 6. a guide ring A; 7. a rotary seal structure; 8. embedding an oil port A; 9. a cylinder body; 10. a guide ring B; 11. a lower end grease groove; 12. a wear pad; 13. a V-shaped sealing structure; 14. a mandrel; 141. a flange; 142 a boss; 15. c, oil return drift diameter; 16. and embedding the oil port B.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, a novel central swivel joint for construction machinery comprises a cylinder 9, wherein an electric brush 1 is arranged at the top of the cylinder 9, O-rings 2 are symmetrically arranged at the top of the cylinder 9, and a polyurethane Glay ring 4, an upper-end grease groove 5, a guide ring A6, a rotary sealing structure 7, a guide ring B10 and a lower-end grease groove 11 are arranged in the cylinder 9 from top to bottom; the inner side of the top of the cylinder body 9 is provided with a pressing plate 3, the bottom of the cylinder body 9 is provided with a V-shaped sealing structure 13, a mandrel 14 is symmetrically arranged in the cylinder body 9, the middle position of the left side of the cylinder body 9 is provided with an embedded oil port A8, the middle position of the right side of the cylinder body is provided with an embedded oil port B16, and the bottom of the cylinder body 9 is provided with a C oil return drift diameter; the embedded oil port A8 and the embedded oil port B16 share the C oil return drift diameter 15; the polyurethane GREEN 4, the upper end grease groove 5, the guide ring A6, the rotary sealing structure 7, the guide ring B10 and the lower end grease groove 11 are respectively provided with one; two polyurethane GREEN rings 4, an upper end grease groove 5, a guide ring A6, a rotary sealing structure 7, a guide ring B10 and a lower end grease groove 11 are arranged outside the mandrel 14; the mandrel 14 has a flange 141 and a boss 142; the outer diameter of the boss 142 is larger than that of the cylinder 9; a wear-resistant pad 12 is arranged below the lower yellow oil groove 11; grease is filled in the upper grease groove 5 and the lower grease groove 11.
The working process is as follows:
when rainwater flows from the upper part of the electric brush 1, the O-shaped ring 2 plays a first layer of waterproof function; when steam broke through first line of defence line O type circle 2 of brush 1, polyurethane greige circle 4 then can prevent effectively that steam from getting into in the 14 oil ducts of dabber, played the waterproof dustproof effect in second floor, fill up the butter groove of butter and can prevent effectively that dust and steam from further invading dabber 14 to can lubricate cylinder body 9 inner wall, dabber 14 and guide ring, play third layer water-proof effects.
When the rainwater from the top drenches on the flange dish of dabber 14, the boss 141 of dabber 14 can play the drainage effect, and a large amount of rainwater can not be stockpiled on central rotary joint, and the steam that a small amount of rainwater evaporation formed is isolated by V type seal structure 13 again, and when steam broke through V type seal structure 13, the butter groove of filling up butter can play the waterproof dustproof effect in second floor to can lubricate cylinder body 9 inner wall, dabber 14.
The embedded oil port A8 and the embedded oil port B16 share the same C oil return path 15, so that the diameter of the center rotary joint can be reduced by one oil return path, and the height direction of the center rotary joint can be reduced by one oil duct; in addition, the embedded oil port changes the traditional welding type oil port, and the structural reliability is higher.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The utility model provides a novel engineering machine tool is with center swivel joint, includes the cylinder body, its characterized in that: the top of the cylinder body is provided with an electric brush, the top of the cylinder body is symmetrically provided with O-shaped rings, and the inside of the cylinder body is provided with a polyurethane GREEN ring, an upper-end grease groove, a guide ring A, a rotary sealing structure, a guide ring B and a lower-end grease groove from top to bottom;
the hydraulic cylinder is characterized in that a pressing plate is arranged inside the top of the cylinder body, V-shaped sealing structures are symmetrically arranged at the bottom of the cylinder body, mandrels are symmetrically arranged at the bottom of the cylinder body, an embedded oil port A is arranged at the middle position of the left side of the cylinder body, and an embedded oil port B is arranged at the middle position of the left side of the cylinder body;
the bottom of the cylinder body is provided with a C oil return path.
2. The novel central swivel joint for the construction machine as claimed in claim 1, wherein: the embedded oil port A and the embedded oil port B share the oil return drift diameter C.
3. The novel central swivel joint for the construction machine as claimed in claim 1, wherein: the polyurethane GREEN, the upper end grease groove, the guide ring A, the rotary sealing structure, the guide ring B and the lower end grease groove are respectively provided with one.
4. The novel central swivel joint for construction machinery as claimed in claim 3, wherein: the two polyurethane GREEN rings, the upper end grease groove, the guide ring A, the rotary sealing structure, the guide ring B and the lower end grease groove are arranged on the outer side of the mandrel.
5. The novel central swivel joint for the construction machine as claimed in claim 1, wherein: the mandrel is provided with a double-layer boss.
6. The novel central swivel joint for the construction machine as claimed in claim 1, wherein: the outer diameter of the boss is larger than that of the cylinder body.
7. The novel central swivel joint for the construction machine as claimed in claim 1, wherein: and a wear-resistant pad is arranged below the lower-end yellow oil groove.
8. The novel central swivel joint for the construction machine as claimed in claim 1, wherein: and grease is filled in the upper end grease groove and the lower end grease groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011501106.1A CN112555548A (en) | 2020-12-18 | 2020-12-18 | Novel central swivel joint for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011501106.1A CN112555548A (en) | 2020-12-18 | 2020-12-18 | Novel central swivel joint for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112555548A true CN112555548A (en) | 2021-03-26 |
Family
ID=75063282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011501106.1A Pending CN112555548A (en) | 2020-12-18 | 2020-12-18 | Novel central swivel joint for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112555548A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217737A (en) * | 2021-05-12 | 2021-08-06 | 贵州詹阳动力重工有限公司 | Assembly method of all-terrain vehicle rotary joint and rotary joint |
| CN113464748A (en) * | 2021-07-07 | 2021-10-01 | 建湖县特佳液压管件有限公司 | Center swivel joint |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2083202A2 (en) * | 2008-01-23 | 2009-07-29 | Behr GmbH & Co. KG | Lead-through device |
| CN201317635Y (en) * | 2008-09-19 | 2009-09-30 | 徐州徐工随车起重机有限公司 | Rotary distributor |
| CN202474511U (en) * | 2011-12-28 | 2012-10-03 | 沈阳捷通消防车有限公司 | Centre revolving joint |
| CN103423537A (en) * | 2012-05-21 | 2013-12-04 | 江阴市长龄机械制造有限公司 | Hydraulic swivel joint with good sealing effect |
| CN205037011U (en) * | 2015-10-19 | 2016-02-17 | 济南豪瑞通专用汽车有限公司 | Centre revolving joint for lorry crane |
| CN205896512U (en) * | 2016-07-21 | 2017-01-18 | 山东德立信液压有限公司 | Central swivel joint is used to excavator |
| CN209130363U (en) * | 2018-11-29 | 2019-07-19 | 山东德立信液压有限公司 | A kind of modularization center-rotary joint |
| CN209943774U (en) * | 2019-05-07 | 2020-01-14 | 河南中州铝业高科有限公司 | Flexible sealing water rotary joint |
-
2020
- 2020-12-18 CN CN202011501106.1A patent/CN112555548A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2083202A2 (en) * | 2008-01-23 | 2009-07-29 | Behr GmbH & Co. KG | Lead-through device |
| CN201317635Y (en) * | 2008-09-19 | 2009-09-30 | 徐州徐工随车起重机有限公司 | Rotary distributor |
| CN202474511U (en) * | 2011-12-28 | 2012-10-03 | 沈阳捷通消防车有限公司 | Centre revolving joint |
| CN103423537A (en) * | 2012-05-21 | 2013-12-04 | 江阴市长龄机械制造有限公司 | Hydraulic swivel joint with good sealing effect |
| CN205037011U (en) * | 2015-10-19 | 2016-02-17 | 济南豪瑞通专用汽车有限公司 | Centre revolving joint for lorry crane |
| CN205896512U (en) * | 2016-07-21 | 2017-01-18 | 山东德立信液压有限公司 | Central swivel joint is used to excavator |
| CN209130363U (en) * | 2018-11-29 | 2019-07-19 | 山东德立信液压有限公司 | A kind of modularization center-rotary joint |
| CN209943774U (en) * | 2019-05-07 | 2020-01-14 | 河南中州铝业高科有限公司 | Flexible sealing water rotary joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217737A (en) * | 2021-05-12 | 2021-08-06 | 贵州詹阳动力重工有限公司 | Assembly method of all-terrain vehicle rotary joint and rotary joint |
| CN113464748A (en) * | 2021-07-07 | 2021-10-01 | 建湖县特佳液压管件有限公司 | Center swivel joint |
| CN113464748B (en) * | 2021-07-07 | 2022-09-30 | 建湖县特佳液压管件有限公司 | Center swivel joint |
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