CN112594469A - Variable throttling rotary joint based on hydraulic cylinder pin shaft - Google Patents
Variable throttling rotary joint based on hydraulic cylinder pin shaft Download PDFInfo
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- CN112594469A CN112594469A CN202011330413.8A CN202011330413A CN112594469A CN 112594469 A CN112594469 A CN 112594469A CN 202011330413 A CN202011330413 A CN 202011330413A CN 112594469 A CN112594469 A CN 112594469A
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- hydraulic cylinder
- pin shaft
- gland
- throttling
- cylinder pin
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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
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a variable throttling rotary joint based on a hydraulic cylinder pin shaft, which comprises: the hydraulic cylinder comprises a hydraulic cylinder lug ring, a right throttling gland, a hydraulic cylinder pin shaft, a lug ring seat and a left throttling gland; the hydraulic cylinder pin shaft penetrates through the hydraulic cylinder lug ring, and two ends of the hydraulic cylinder pin shaft are supported on the lug ring seat; the connecting piece penetrates through the hydraulic cylinder lug ring and the hydraulic cylinder pin shaft, and a static seal is arranged between the butt joint surfaces of the hydraulic cylinder lug ring and the hydraulic cylinder pin shaft; the left throttling gland and the right throttling gland are respectively and fixedly arranged at the left end and the right end of the lug ring seat, meanwhile, the two ends of the hydraulic cylinder pin shaft are respectively and rotatably matched with the left throttling gland and the right throttling gland, and a dynamic seal is arranged between matching surfaces; oil grooves II are formed in two ends of the hydraulic cylinder pin shaft respectively, oil grooves communicated with the rigid oil pipe are machined in the centers of the left throttle gland and the right throttle gland respectively along the axial direction, more than three oil passing structures distributed according to a set rule are machined on the wall surfaces of the two oil grooves respectively, and the oil passing area of the oil passing structures swept by the oil grooves II can be changed through rotation of the hydraulic cylinder pin shaft.
Description
Technical Field
The invention relates to the technical field of hydraulic pressure, in particular to a variable throttling rotary joint based on a hydraulic cylinder pin shaft.
Background
In the application of pneumatic cylinder, can often meet at the flexible in-process of pneumatic cylinder, the pneumatic cylinder can be along with the flexible certain angle of swing of pneumatic cylinder, and this kind of condition is often found the pneumatic cylinder that earrings and hinge are connected. Under such working conditions, a hydraulic hose is generally used to supply oil to the hydraulic cylinder; or the pin shaft is provided with a rotary joint for supplying oil through a steel pipe. However, these two methods have the following disadvantages:
1) the safety of the hose is low, and the rubber is used for a long time and has aging and bursting risks; the hose is bent and thrown along with the movement of the hydraulic cylinder, and the risk of fatigue fracture exists.
2) The rotary joint is arranged on the pin shaft, and a larger installation space is needed.
Disclosure of Invention
In view of the above, the invention provides a variable throttling rotary joint based on a hydraulic cylinder pin shaft, which can be installed in a limited small space, can conveniently use a steel pipe to supply oil to a hydraulic cylinder, and can preset a throttling curve along with the change of the rotation angle of the hydraulic cylinder pin shaft.
The technical scheme of the invention is as follows: a variable throttle rotary joint based on a hydraulic cylinder pin shaft comprises: the hydraulic cylinder comprises a hydraulic cylinder lug ring, a right throttling gland, a hydraulic cylinder pin shaft, a lug ring seat and a left throttling gland;
the hydraulic cylinder pin shaft penetrates through the hydraulic cylinder lug ring, and two ends of the hydraulic cylinder pin shaft are supported on the lug ring seat; the connecting piece penetrates through the hydraulic cylinder lug ring and the hydraulic cylinder pin shaft and is used for limiting the rotation between the hydraulic cylinder lug ring and the hydraulic cylinder pin shaft, and a static seal is arranged between the butt joint surfaces of the hydraulic cylinder lug ring and the hydraulic cylinder pin shaft; the left throttling gland and the right throttling gland are respectively and fixedly arranged at the left end and the right end of the lug ring seat, meanwhile, the two ends of the hydraulic cylinder pin shaft are respectively and rotatably matched with the left throttling gland and the right throttling gland, and a dynamic seal is arranged between matching surfaces;
the hydraulic cylinder pin shaft is characterized in that oil grooves II are formed in two ends of the hydraulic cylinder pin shaft respectively, the oil grooves communicated with the rigid oil pipe are formed in the centers of the left throttling gland and the right throttling gland respectively in an axial direction, more than three oil passing structures distributed according to a set rule are formed in the wall surfaces of the two oil grooves respectively, and the hydraulic cylinder earrings drive the hydraulic cylinder pin shaft to rotate so as to change the oil passing area of the oil passing structures swept by the oil passing grooves II on the hydraulic cylinder pin shaft, so that variable throttling is realized.
Preferably, the earring seat is provided with a mounting groove, two opposite sides of the mounting groove are provided with two coaxial mounting holes, the hydraulic cylinder earring is arranged in the mounting groove of the earring seat and is provided with a through hole, and the hydraulic cylinder pin shaft sequentially penetrates through one mounting hole of the earring seat, the through hole of the hydraulic cylinder earring and the other mounting hole of the earring seat to support the hydraulic cylinder earring in the earring seat.
Preferably, the number, the oil passing area and the arrangement mode of the oil passing structures are adjusted, so that the throttling oil passing flow can be adjusted.
Preferably, the left throttling gland and the right throttling gland are both stepped shaft-shaped cylinders, the large ends of the left throttling gland and the right throttling gland are both fixed on the lug ring seat, and the small ends of the left throttling gland and the right throttling gland are respectively arranged in oil grooves I formed in two axial ends of a pin shaft of the hydraulic cylinder.
Preferably, the oil passing structure adopts an oil passing hole or an oil passing groove I.
Preferably, the left throttle gland and the right throttle gland are fixed with the left end and the right end of the ear ring seat by screws respectively.
Has the advantages that:
1. the rotary joint can be installed in a limited small space, can conveniently use the rigid oil pipe to supply oil to the hydraulic cylinder, eliminates the burst risk caused by using the hydraulic hose, can preset a throttling curve along with the change of the rotation angle of the pin shaft of the hydraulic cylinder, and effectively improves the safety of equipment and prolongs the service life of the equipment.
2. According to the hydraulic cylinder lug, the hydraulic cylinder pin shaft and the hydraulic cylinder lug can effectively and synchronously rotate through the concrete connection arrangement between the hydraulic cylinder pin shaft and the lug seat, and the hydraulic cylinder lug can be accurately supported on the lug seat.
Drawings
FIG. 1 is a partial cross-sectional view of a front view of a rotary joint of the present invention.
Fig. 2 is a cross-sectional view of a left side view of the swivel of the present invention.
The hydraulic cylinder comprises a hydraulic cylinder lug, 2-screws, 3-right throttling gland, 4-hydraulic cylinder pin shafts, 5-cylindrical pins, 6-lug ring seats and 7-left throttling gland.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment provides a variable throttle rotary joint based on hydraulic cylinder pin shaft, can install in limited little space, and can facilitate the use steel pipe for the hydraulic cylinder fuel feeding to can predetermine the throttle curve along with the change of hydraulic cylinder pin shaft turned angle.
As shown in fig. 1 and 2, the rotary joint includes: the hydraulic cylinder comprises a hydraulic cylinder ear ring 1, a right throttling gland 3, a hydraulic cylinder pin shaft 4, an ear ring seat 6 and a left throttling gland 7;
the connection relationship of the rotary joint is as follows: the ear ring seat 6 is provided with a mounting groove, two opposite sides of the mounting groove are provided with two coaxial mounting holes, the hydraulic cylinder ear ring 1 is arranged in the mounting groove of the ear ring seat 6 and is provided with a through hole, and the hydraulic cylinder pin shaft 4 sequentially penetrates through one mounting hole of the ear ring seat 6, the through hole of the hydraulic cylinder ear ring 1 and the other mounting hole of the ear ring seat 6; the cylindrical pin 5 penetrates through the hydraulic cylinder lug ring 1 and the hydraulic cylinder pin shaft 4 and is used for limiting the rotation between the hydraulic cylinder lug ring 1 and the hydraulic cylinder pin shaft 4, so that the hydraulic cylinder lug ring 1 and the hydraulic cylinder pin shaft 4 do not move relatively, and a static seal is arranged between the butt joint surfaces of the hydraulic cylinder lug ring 1 and the hydraulic cylinder pin shaft 4;
the left throttling gland 7 and the right throttling gland 3 are respectively arranged at the left end and the right end of the ear ring seat 6 and are fixed with the ear ring seat 6 by using the screws 2, so that the left throttling gland 7, the right throttling gland 3 and the ear ring seat 6 do not move relatively; meanwhile, two ends of a hydraulic cylinder pin shaft 4 are respectively in running fit with the left throttling gland 7 and the right throttling gland 3, and a dynamic seal is arranged between the matching surfaces;
the left throttling gland 7 and the right throttling gland 3 are both stepped shaft-shaped cylinders, the large ends of the two are fixed on the lug ring seat 6, the small ends of the two are respectively arranged in oil grooves I formed in the two axial ends of the hydraulic cylinder pin shaft 4, and the oil grooves I in the two axial ends of the hydraulic cylinder pin shaft 4 are respectively communicated with an oil passage in the hydraulic cylinder lug ring 1 through oil holes;
the centers of the left throttling gland 7 and the right throttling gland 3 are respectively provided with an oil groove II communicated with the rigid oil pipe along the axial direction, and the wall surfaces of the two oil grooves II are respectively provided with a plurality of oil passing holes or oil passing grooves I distributed according to a set rule according to the requirement for passing oil, so that the number, the oil passing area and the arrangement mode of the oil passing holes or the oil passing grooves I are adjusted, and the flow of the passing oil is favorably adjusted;
oil grooves II are machined in oil grooves I at two ends of a hydraulic cylinder pin shaft 4, a hydraulic cylinder lug ring 1 drives the hydraulic cylinder pin shaft 4 to rotate, the number of oil holes passing through two communicated throttling glands or the grooving area of the oil grooves I, which are swept by the oil grooves II on the hydraulic cylinder pin shaft 4, can be changed, and therefore the oil flow can be changed.
The working principle of the rotary joint is as follows: during the use, left throttle gland 7 and right throttle gland 3 are connected with rigidity oil pipe (like the steel pipe) respectively, pneumatic cylinder earrings 1 rotates along with the swing of pneumatic cylinder and sets for the angle, pneumatic cylinder round pin axle 4 can the adaptability rotation corresponding angle for left throttle gland 7 and right throttle gland 3, thereby avoid pneumatic cylinder round pin axle 4 to produce the motion interference relative rigidity oil pipe, simultaneously, pneumatic cylinder earrings 1 drives pneumatic cylinder round pin axle 4 and rotates, thereby it changes its fluting area of crossing the oilhole quantity or crossing the oilhole I that sweeps two throttle glands to drive oil groove II in it, realize the regulation of variable throttle.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a variable throttle rotary joint based on pneumatic cylinder round pin axle which characterized in that includes: the hydraulic cylinder comprises a hydraulic cylinder ear ring (1), a right throttling gland (3), a hydraulic cylinder pin shaft (4), an ear ring seat (6) and a left throttling gland (7);
the hydraulic cylinder pin shaft (4) penetrates through the hydraulic cylinder lug ring (1), and two ends of the hydraulic cylinder pin shaft are supported on the lug ring seat (6); the connecting piece penetrates through the hydraulic cylinder lug ring (1) and the hydraulic cylinder pin shaft (4) and is used for limiting the rotation between the hydraulic cylinder lug ring (1) and the hydraulic cylinder pin shaft (4), and a static seal is arranged between the butt joint surfaces of the hydraulic cylinder lug ring (1) and the hydraulic cylinder pin shaft (4); the left throttling gland (7) and the right throttling gland (3) are respectively and fixedly arranged at the left end and the right end of the lug ring seat (6), meanwhile, the two ends of the hydraulic cylinder pin shaft (4) are respectively in running fit with the left throttling gland (7) and the right throttling gland (3), and a dynamic seal is arranged between the matching surfaces;
oil grooves II are respectively formed in two ends of the hydraulic cylinder pin shaft (4), oil grooves communicated with the rigid oil pipe are respectively machined in the centers of the left throttling gland (7) and the right throttling gland (3) along the axial direction, more than three oil passing structures distributed according to a set rule are respectively machined on the wall surfaces of the two oil grooves, and the hydraulic cylinder earrings (1) drive the hydraulic cylinder pin shaft (4) to rotate so as to change the oil passing area of the oil passing structures passing through the oil grooves II on the hydraulic cylinder pin shaft (4), so that variable throttling is realized.
2. The variable throttle rotary joint based on the hydraulic cylinder pin shaft as claimed in claim 1, characterized in that the earring seat (6) is provided with a mounting groove, two opposite sides of the mounting groove are provided with two coaxial mounting holes, the hydraulic cylinder earring (1) is arranged in the mounting groove of the earring seat (6) and is provided with a through hole, the hydraulic cylinder pin shaft (4) passes through one mounting hole of the earring seat (6), the through hole of the hydraulic cylinder earring (1) and the other mounting hole of the earring seat (6) in sequence to support the hydraulic cylinder earring (1) in the earring seat (6).
3. The variable throttle rotary joint based on the hydraulic cylinder pin shaft as claimed in claim 1, wherein the amount, the oil passing area and the arrangement of the oil passing structures are adjusted to adjust the oil passing flow of the throttle.
4. The variable throttling rotary joint based on the hydraulic cylinder pin shaft as claimed in claim 1, characterized in that the left throttling gland (7) and the right throttling gland (3) are both stepped shaft-like cylinders, the big ends of the two are fixed on the ear ring seat (6), and the small ends are respectively arranged in oil grooves I formed at the two axial ends of the hydraulic cylinder pin shaft (4).
5. The variable throttle rotary joint based on the hydraulic cylinder pin shaft as claimed in claim 1, wherein the oil passing structure adopts an oil passing hole or an oil passing groove I.
6. The variable throttle rotary joint based on the hydraulic cylinder pin shaft as claimed in claim 1, characterized in that the left throttle gland (7) and the right throttle gland (3) are fixed with the left and right ends of the earring seat (6) respectively by screws (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330413.8A CN112594469B (en) | 2020-11-24 | 2020-11-24 | Variable throttling rotary joint based on hydraulic cylinder pin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330413.8A CN112594469B (en) | 2020-11-24 | 2020-11-24 | Variable throttling rotary joint based on hydraulic cylinder pin shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112594469A true CN112594469A (en) | 2021-04-02 |
| CN112594469B CN112594469B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011330413.8A Active CN112594469B (en) | 2020-11-24 | 2020-11-24 | Variable throttling rotary joint based on hydraulic cylinder pin shaft |
Country Status (1)
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|---|---|
| CN (1) | CN112594469B (en) |
Citations (14)
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| GB771910A (en) * | 1954-07-27 | 1957-04-03 | Gabriel Co | Improvements in or relating to a shock absorber |
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| EP2626142A1 (en) * | 2012-02-08 | 2013-08-14 | Proline Group AB | A nozzle for applying a lining material onto an inner surface of a pipe |
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Patent Citations (14)
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| GB771910A (en) * | 1954-07-27 | 1957-04-03 | Gabriel Co | Improvements in or relating to a shock absorber |
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| EP2626142A1 (en) * | 2012-02-08 | 2013-08-14 | Proline Group AB | A nozzle for applying a lining material onto an inner surface of a pipe |
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| JP2014190472A (en) * | 2013-03-28 | 2014-10-06 | Kitz Corp | Flow rate adjustment type rotary valve |
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| WO2019009133A1 (en) * | 2017-07-07 | 2019-01-10 | 株式会社デンソー | Throttle valve device |
| CN207145835U (en) * | 2017-09-19 | 2018-03-27 | 平顶山市久久实业有限公司 | A kind of hydraulic joint of regulating flow quantity |
| CN110397759A (en) * | 2018-04-25 | 2019-11-01 | 杭州三花研究院有限公司 | Throttling set |
| CN110039563A (en) * | 2019-04-24 | 2019-07-23 | 北京轩宇智能科技有限公司 | A kind of arm end tool |
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| CN112594469B (en) | 2022-06-28 |
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