CN216555874U

CN216555874U - High-sealing rotary joint

Info

Publication number: CN216555874U
Application number: CN202122617716.4U
Authority: CN
Inventors: 陈昌峰
Original assignee: Jianhu Tejia Hydraulic Pipe Fittings Co ltd
Current assignee: Jianhu Tejia Hydraulic Pipe Fittings Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-17
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a high-sealing rotary joint, which adopts the technical scheme that: the oil hole is formed in the oil duct, a lower sealing plate is arranged at the bottom end of the center shaft, an upper sealing plate is arranged at the upper end of the center shaft, an outer shell is sleeved outside the center shaft, an inner concave portion is arranged on the upper portion of the outer shell and is movably connected with the upper portion of the center shaft in a sealing mode, an integrally formed connecting portion is fixedly arranged at the lower portion of the outer shell, and the connecting portion is movably and hermetically connected with the lower sealing plate. The device can improve the sealing performance of the rotary joint when in use, and prevent the leakage of the rotary joint when in long-term operation.

Description

High-sealing rotary joint

Technical Field

The utility model relates to the field of rotary joints, in particular to a high-sealing rotary joint.

Background

The rotary joint is a key part in hydraulic systems such as an excavator, a crane, an overhead working truck, a shield machine, a rotary excavator, a land leveler, an offshore operation platform and the like, and is used for connecting hydraulic pipelines of a fixed part and a rotary part in the whole hydraulic system, so that the upper part and the lower part of the hydraulic pipeline of the system have 360-degree relative rotary motion without interference.

The current swivel joints still have some disadvantages, such as: the sealing performance of the rotary joint can not be stabilized, so that the rotary joint is easy to leak when working and running for a long time.

SUMMERY OF THE UTILITY MODEL

In view of the problems mentioned in the background art, it is an object of the present invention to provide a swivel joint with high sealability to solve the problems mentioned in the background art.

The technical purpose of the utility model is realized by the following technical scheme:

the utility model provides a rotary joint of high leakproofness, includes the coupling, the integrative center pin that is provided with in lower part of coupling, be equipped with a plurality of groups on the center pin and cut apart the ring, a plurality of groups cut apart the ring and form the oil duct each other, the oilhole has been seted up to the inside of oil duct, the bottom mounting of center pin is equipped with lower closing plate, the upper end of center pin is equipped with the upper sealing plate, the shell body has been cup jointed to the outside of center pin, the upper portion of shell body is equipped with interior concave part, interior concave part with the sealed swing joint in upper portion of center pin, the fixed connecting portion that are equipped with integrated into one piece in lower part of shell body, connecting portion with lower closing plate swing joint.

By adopting the technical scheme, the sealing performance of the rotary joint can be improved when the rotary joint is used by utilizing the device, and the problem of leakage of the rotary joint when the rotary joint is used for a long time is prevented.

Preferably, a plurality of sets of shaft joint oil transfer holes are formed in the side surface of the shaft joint, and the plurality of sets of shaft joint oil transfer holes correspond to the oil duct and the oil hole respectively.

Through adopting above-mentioned technical scheme, the setting of shaft joint oil transfer hole can be realized being connected with equipment to can form solitary oil output through corresponding oil duct and oilhole.

Preferably, the outer shell is provided with a plurality of groups of oil inlet and outlet holes, and the plurality of groups of oil inlet and outlet holes are arranged corresponding to the oil duct and the oil holes.

Through adopting above-mentioned technical scheme, the oil can be carried to different oil ducts in passing in and out oil transfer hole's settlement.

Preferably, the bottom end of the central shaft is movably connected with a fixed seat, and the fixed seat is fixedly connected with the connecting part.

Through adopting above-mentioned technical scheme, the setting of fixing base can be realized forming an inclosed space with connecting portion, and the center pin of being convenient for can carry out rotation regulation.

Preferably, the fixing base with all seted up stock screw rod groove in the connecting portion, the inside threaded connection in stock screw rod groove has the stock screw rod.

Through adopting above-mentioned technical scheme, the settlement of stock screw rod groove and stock screw rod can make fixing base and connecting portion can realize stable sealed fixed connection.

Preferably, a connecting plate is fixedly and integrally arranged at the top end of the concave part, and the connecting plate and the central shaft are in sealing movable connection through a sealing gasket.

Through adopting above-mentioned technical scheme, the settlement of connecting plate can be so that the fixed connection that the shell body can be stable to sealed the connection that can realize the leakproofness, prevent to leak.

Preferably, the edge of the connecting plate is provided with at least four groups of protruding parts, and first threaded holes are formed in the at least four groups of protruding parts.

Through adopting above-mentioned technical scheme, the settlement of protruding portion and first screw hole can be so that the outer shell body can realize stable fixed mounting.

Preferably, a plurality of groups of second threaded holes are formed in the outer side of the oil conveying hole of the shaft joint.

Through adopting above-mentioned technical scheme, the setting of second screw hole can be so that external oil pipeline can stable sealing connection.

In summary, the utility model mainly has the following beneficial effects:

the central shaft is provided with a plurality of groups of dividing rings, so that the central shaft can form respective oil passages to realize oil transportation, and the central shaft is provided with a lower sealing plate and an upper sealing plate to realize sealing connection between the central shaft and the outer shell, and is provided with a sealing gasket to realize stable sealing connection.

Drawings

FIG. 1 is one of the schematic structural diagrams of the present invention;

FIG. 2 is a second schematic structural diagram of the present invention;

FIG. 3 is a schematic view of a portion of the structure of the present invention;

fig. 4 is a schematic cross-sectional structure of the present invention.

Reference numerals: 1. a shaft coupling; 2. a central shaft; 3. dividing a ring; 4. an oil passage; 5. an oil hole; 6. a lower sealing plate; 7. an upper sealing plate; 8. a gasket; 9. an oil transfer hole of the shaft joint; 10. an outer housing; 11. an inner concave portion; 12. a connecting portion; 13. an oil inlet and outlet hole; 14. a fixed seat; 15. a connecting plate; 16. a protrusion; 17. a first threaded hole; 18. a second threaded hole; 19. a long rod screw groove; 20. a long rod screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-4, a swivel joint with high sealing performance, including an axial joint 1, a central shaft 2 is integrally arranged at the lower portion of the axial joint 1, a plurality of groups of dividing rings 3 are arranged on the central shaft 2, the groups of dividing rings 3 form an oil duct 4, an oil hole 5 is formed inside the oil duct 4, a lower sealing plate 6 is fixedly arranged at the bottom end of the central shaft 2, an upper sealing plate 7 is arranged at the upper end of the central shaft 2, an outer shell 10 is sleeved outside the central shaft 2, an inner concave portion 11 is arranged at the upper portion of the outer shell 10, the inner concave portion 11 is movably connected with the upper portion of the central shaft 2 in a sealing manner, an integrally formed connecting portion 12 is fixedly arranged at the lower portion of the outer shell 10, and the connecting portion 12 is movably and sealingly connected with the lower sealing plate 6.

By adopting the technical scheme, the sealing performance of the rotary joint can be improved when the rotary joint is used, and the problem of leakage of the rotary joint when the rotary joint is used for a long time is solved by the aid of the rotary joint sealing device, the central shaft 2 is provided with the plurality of groups of the partition rings 3, so that the central shaft 2 can form respective oil passages 4 to realize oil transportation, the central shaft 2 is provided with the lower sealing plate 6 and the upper sealing plate 7 to realize sealing connection of the central shaft 2 and the outer shell 10, and the sealing gasket 8 is arranged to realize stable sealing connection.

In this embodiment, preferably, a plurality of sets of shaft joint oil transfer holes 9 are formed in the side surface of the shaft joint 1, and the plurality of sets of shaft joint oil transfer holes 9 correspond to the oil passage 4 and the oil holes 5, respectively. The effect is that the setting of the shaft joint oil transfer hole 9 enables a connection with the equipment and a separate oil output can be formed by the corresponding oil passage 4 and oil hole 5.

In this embodiment, preferably, the outer casing 10 is provided with a plurality of groups of oil inlet and outlet holes 13, and the plurality of groups of oil inlet and outlet holes 13 are arranged corresponding to the oil passage 4 and the oil holes 5. The effect is that the setting of the oil inlet and outlet holes 13 can realize the oil transportation to different oil passages 4.

In this embodiment, preferably, the bottom end of the central shaft 2 is movably connected with a fixing seat 14, and the fixing seat 14 is fixedly connected with the connecting portion 12. The effect is that, the setting of fixing base 14 can realize forming a confined space with connecting portion 12, is convenient for center pin 2 can carry out rotation regulation.

In this embodiment, preferably, a long rod screw groove 19 is formed in each of the fixing seat 14 and the connecting portion 12, and a long rod screw 20 is threadedly connected inside the long rod screw groove 19. The effect is that the long rod screw groove 19 and the long rod screw 20 are set so that the fixing base 14 and the connecting portion 12 can achieve stable sealing and fixing connection.

In this embodiment, preferably, a connecting plate 15 is integrally fixed to the top end of the concave portion 11, and the connecting plate 15 is movably connected to the central shaft 2 in a sealing manner through a sealing gasket 8. The effect is that the setting of the connecting plate 15 can make the outer shell 10 stably fixed connection, and the sealing gasket 8 can realize the connection with sealing performance and prevent leakage.

In this embodiment, preferably, at least four sets of protruding portions 16 are disposed on the edge of the connecting plate 15, and the first threaded holes 17 are disposed inside the at least four sets of protruding portions 16. The effect is that the setting of the protruding portion 16 and the first threaded hole 17 may enable stable fixed mounting of the outer housing 10.

In this embodiment, preferably, a plurality of sets of second threaded holes 18 are opened on the outer side of the shaft joint oil transfer hole 9. The effect is that the setting of the second threaded hole 18 can make the external oil pipeline stably connected in a sealing manner.

The use principle and the advantages are as follows: when the rotary head sealing device is used, the central shaft 2 and the outer shell 10 are movably and hermetically connected through the upper sealing plate 7 and the lower sealing plate 6, then the fixed seat 14 and the connecting part 12 are hermetically connected, the connecting plate 15 is hermetically connected, then the outer shell 10 is fixedly installed through the protruding part 16 and the first threaded hole 17, then an oil conveying pipe is fixedly communicated with the inlet and outlet oil conveying hole 13 and the shaft joint oil conveying hole 9, then the oil conveying pipe 4 and the oil hole 5 are passed through, oil conveying and rotation are realized through the shaft joint oil conveying hole 9, stable sealing connection is realized through the lower sealing plate 6, the upper sealing plate 7, the sealing gasket, the inner concave part 11, the connecting part 12 and the fixed seat 14, and sealing connection of the rotary head can be realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A swivel joint of high leakproofness, includes shaft joint (1), its characterized in that: the utility model discloses a bearing joint, including shaft joint (1), center pin (2), be equipped with a plurality of groups on center pin (2) and cut apart ring (3), a plurality of groups cut apart ring (3) and form oil duct (4) each other, oilhole (5) have been seted up to the inside of oil duct (4), the bottom mounting of center pin (2) is equipped with lower closing plate (6), the upper end of center pin (2) is equipped with upper sealing plate (7), shell body (10) have been cup jointed to the outside of center pin (2), the upper portion of shell body (10) is equipped with interior recess (11), interior recess (11) with the upper portion seal swing joint of center pin (2), the fixed connecting portion (12) that are equipped with integrated into one piece in lower part of shell body (10), connecting portion (12) with closing plate (6) swing joint down.

2. A high-sealability swivel joint according to claim 1, wherein: the side surface of the shaft joint (1) is provided with a plurality of groups of shaft joint oil conveying holes (9), and the plurality of groups of shaft joint oil conveying holes (9) correspond to the oil duct (4) and the oil holes (5) respectively.

3. A high-sealability swivel joint according to claim 1, wherein: the oil passage is characterized in that the outer shell (10) is provided with a plurality of groups of oil inlet and outlet holes (13), and the oil inlet and outlet holes (13) and the oil passage (4) and the oil holes (5) are arranged correspondingly.

4. A high-sealability swivel joint according to claim 1, wherein: the bottom end swing joint of center pin (2) has fixing base (14), fixing base (14) with connecting portion (12) fixed connection.

5. A high-tightness swivel joint according to claim 4, wherein: the fixing seat (14) and the connecting part (12) are internally provided with long rod screw grooves (19), and the long rod screw rods (20) are in threaded connection with the inner parts of the long rod screw grooves (19).

6. A high-sealability swivel joint according to claim 1, wherein: the top end of the inner concave part (11) is fixedly and integrally provided with a connecting plate (15), and the connecting plate (15) is movably connected with the central shaft (2) in a sealing mode through a sealing gasket (8).

7. A high-sealability swivel joint according to claim 6, wherein: the edge of the connecting plate (15) is provided with at least four groups of protruding parts (16), and first threaded holes (17) are formed in the at least four groups of protruding parts (16).

8. A high-sealability swivel joint according to claim 2, wherein: and a plurality of groups of second threaded holes (18) are formed in the outer side of the shaft joint oil conveying hole (9).