Six-way rotary joint

Abstract

The utility model discloses a six-way rotary joint, which comprises a stator assembly and a rotor assembly, the rotor assembly is sleeved outside the stator assembly and is rotatably assembled with the stator assembly, the rotor assembly comprises a rotating body, the inner wall of the rotating body is axially provided with six annular oil grooves at intervals along the circumferential direction of the inner wall of the rotating body, the side wall of the rotating body is provided with six rotor welding straight-through joints which are communicated with the six annular oil grooves in a one-to-one correspondence manner; the stator assembly comprises a fixed shaft rotationally assembled with the inner wall of the rotating body, the right end of the fixed shaft is flush with the right end of the rotating body, the left end of the fixed shaft protrudes out of the left end of the rotating body, a flange is arranged at the left end of the fixed shaft through an inner hexagon screw, and six stator welding straight-through connectors are arranged on the side wall of the left end of the fixed shaft; and six oil channels of which the two ends are communicated with the stator welding straight-through joints and the annular oil grooves in a one-to-one correspondence manner are arranged in the fixed shaft. The utility model has the advantages of many passages, good sealing performance and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of rotary joint technology, specifically to a six-way rotary joint. Background Technology

[0002] In many industrial sectors, such as metallurgy, power generation, and chemical engineering, it is often necessary to transfer various fluid media, such as hydraulic oil, compressed air, and lubricating oil, between rotating and stationary components. Rotary joints, as a key basic component, play a crucial role in such applications.

[0003] Traditional rotary joints typically have a limited number of channels and a relatively simple structure, making it difficult to meet the demands of modern industry for multi-channel, high-precision, and high-reliability transmission. In complex operating conditions, such as multi-point lubrication systems and multi-channel hydraulic control systems in large machinery, it is necessary to transmit multiple different media simultaneously, requiring rotary joints to possess excellent sealing performance, rotational stability, and a long service life.

[0004] Furthermore, some existing rotary joints are prone to leakage and wear during long-term use, affecting the normal operation of equipment and production efficiency, while also increasing maintenance costs and safety risks. Therefore, developing a new type of multi-channel, high-performance rotary joint is of significant practical importance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a six-way rotary joint to solve the problems of limited number of passages, poor sealing performance and low reliability of existing rotary joints.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0007] A six-way rotary joint includes a stator assembly and a rotor assembly sleeved on the outside of the stator assembly and rotatably assembled with the stator assembly. The rotor assembly includes a rotating body, the inner wall of which has six annular oil grooves spaced axially along the circumferential direction of the inner wall of the rotating body. The side wall of the rotating body is provided with six rotor welding straight-through joints that correspond one-to-one with the six annular oil grooves. The stator assembly includes a fixed shaft rotatably assembled with the inner wall of the rotating body. The right end of the fixed shaft is flush with the right end of the rotating body, and the left end of the fixed shaft protrudes from the left end of the rotating body. The left end of the fixed shaft is provided with a flange by an internal hexagon screw. The left side wall of the fixed shaft is provided with six stator welding straight-through joints. The interior of the fixed shaft is provided with six oil passages whose two ends correspond one-to-one with each stator welding straight-through joint and each annular oil groove.

[0008] Preferably, the inner wall of the rotating body is provided with a plurality of annular sealing grooves spaced apart along the axial direction. The annular sealing grooves are located on both sides of each annular oil groove, and a rotating square ring for the shaft is provided in the annular sealing groove between the rotating body and the fixed shaft for sealing.

[0009] Preferably, the inner wall of the rotating body has bearing ring grooves at both ends along the circumference, and a deep groove ball bearing is provided inside the bearing ring groove between the rotating body and the fixed shaft to support the rotation of the rotating body.

[0010] Preferably, the inner wall of the rotating body is provided with end annular sealing grooves at both ends along the circumference. The end annular sealing grooves are located inside the bearing ring groove on the same side. An O-ring and a sealing retainer ring located outside the O-ring are provided in the end annular sealing groove for sealing between the rotating body and the fixed shaft.

[0011] Preferably, the right end of the rotating body is provided with a shaft retaining ring located outside the deep groove ball bearing.

[0012] Preferably, the oil passage is also connected to one end of a fixed shaft, and the end of the fixed shaft is provided with a plug for sealing the oil passage.

[0013] Preferably, the six rotor welding straight connectors are arranged in two rows along the circumference of the rotating body, each row including three spaced apart along the axial direction of the rotating body, and the two rows of rotor welding straight connectors are staggered; the six stator welding straight connectors are arranged in three rows along the circumference of the fixed shaft, each row including two spaced apart along the axial direction of the fixed shaft, and the two stator welding straight connectors in the middle row are on the same straight line as one row of rotor welding straight connectors.

[0014] Preferably, the outer surfaces of the rotating body, the fixed shaft, and the flange are all coated with a three-proof paint coating.

[0015] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0016] This invention enables the independent transmission of six different media through six independent oil channels, six rotor welded straight-through joints, and six stator welded straight-through joints, thus meeting the multi-path requirements of complex industrial systems.

[0017] This invention effectively prevents media leakage and improves the sealing performance and reliability of the rotary joint by setting multiple sealing structures such as annular sealing grooves inside the rotating body, a rotating square ring for the shaft, an end annular sealing grooves, O-rings, and sealing retaining rings.

[0018] This invention uses deep groove ball bearings to support the rotating body, ensuring the stability and flexibility of the rotating body during rotation, reducing frictional resistance and wear, and extending the service life of the rotary joint.

[0019] This invention facilitates the installation and fixation of the rotary joint through the flange provided on the stator assembly. Attached Figure Description

[0020] Figure 1 This is a first-view structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0022] Figure 3 This is a third-view internal sectional view of the present invention;

[0023] Figure 4 This is a fourth-angle internal sectional view of the present invention;

[0024] Figure 5 This is a schematic diagram of the rotor assembly structure of this utility model;

[0025] Figure 6 This is an internal sectional view of the rotor assembly of this utility model;

[0026] Figure 7 This is a side view of the rotor assembly of this utility model;

[0027] Figure 8 This is a schematic diagram of the stator assembly structure of this utility model;

[0028] Figure 9 This is an internal sectional view of the stator assembly of this utility model.

[0029] The components are: 1. Rotor assembly, 11. Rotating body, 12. Rotor welded straight joint, 13. Annular oil groove, 14. Annular sealing groove, 15. Bearing ring groove, 16. End annular sealing groove, 2. Stator assembly, 21. Fixed shaft, 22. Stator welded straight joint, 23. Oil passage, 24. Plug, 3. Flange, 4. Socket head cap screw, 5. Shaft slewing square ring, 6. Deep groove ball bearing, 7. Shaft retaining ring, 8. O-ring, 9. Sealing retaining ring. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] A six-way rotary joint, combined with Figures 1 to 4 As shown, it includes a rotor assembly 1 and a stator assembly 2. The rotor assembly 1 is sleeved on the outside of the stator assembly 2 and is rotatably assembled with the stator assembly 2.

[0032] like Figures 5 to 7 As shown, the rotor assembly 1 includes a rotating body 11. The inner wall of the rotating body 11 is provided with six annular oil grooves 13 spaced apart along the axial direction. The annular oil grooves 13 are opened circumferentially along the inner wall of the rotating body 11. Six rotor welding straight connectors 12 are provided on the side wall of the rotating body 11, and the six rotor welding straight connectors 12 are connected to the six annular oil grooves 13 one by one.

[0033] like Figures 8 to 9 As shown, the stator assembly 2 includes a fixed shaft 21 rotatably assembled with the inner wall of the rotating body 11. The right end of the fixed shaft 21 is flush with the right end of the rotating body 11, and the left end of the fixed shaft 21 protrudes from the left end of the rotating body 11. A flange 3 is provided on the left end of the fixed shaft 21 through an internal hexagon screw 4. Six stator welding straight connectors 22 are provided on the left side wall of the fixed shaft 21. Six oil passages 23 are provided inside the fixed shaft 21. The two ends of the oil passages 23 are connected to each stator welding straight connector 22 and each annular oil groove 13 in a corresponding manner.

[0034] Specifically, the inner wall of the rotating body 11 is provided with a number of annular sealing grooves 14 spaced apart along the axial direction. The annular sealing grooves 14 are located on both sides of each annular oil groove 13, and a shaft rotary square ring 5 is provided in the annular sealing groove 14. The shaft rotary square ring 5 is located between the rotating body 11 and the fixed shaft 21 to achieve sealing.

[0035] The inner walls of the rotating body 11 are provided with bearing ring grooves 15 along the circumferential direction at both ends. Deep groove ball bearings 6 are installed inside the bearing ring grooves 15. The deep groove ball bearings 6 are located between the rotating body 11 and the fixed shaft 21 to support the rotation of the rotating body 11.

[0036] The inner wall of the rotating body 11 has circumferentially formed end annular sealing grooves 16 at both ends. These end annular sealing grooves 16 are located inside the bearing annular groove 15 on the same side. An O-ring 8 and a sealing retainer 9 are disposed within each end annular sealing groove 16. The O-ring 8 and sealing retainer 9 are located between the rotating body 11 and the fixed shaft 21, with the sealing retainer 9 located outside the O-ring 8. The O-ring 8 and sealing retainer 9 are used to achieve a seal. A shaft retainer 7 is provided at the right end of the rotating body 11, located outside the deep groove ball bearing 6.

[0037] The oil passage 23 is also connected to one end of the fixed shaft 21, and a plug 24 is provided at the end of the fixed shaft 21. The plug 24 is used to seal the oil passage 23.

[0038] Six rotor welding straight connectors 12 are arranged in two rows along the circumference of the rotating body 11, with each row including three connectors spaced apart along the axial direction of the rotating body 11, and the two rows of rotor welding straight connectors 12 are staggered. Six stator welding straight connectors 22 are arranged in three rows along the circumference of the fixed shaft 21, with each row including two connectors spaced apart along the axial direction of the fixed shaft 21, and the two stator welding straight connectors 22 in the middle row are on the same straight line as one row of rotor welding straight connectors 12.

[0039] The outer surfaces of the rotating body 11, the fixed shaft 21, and the flange 3 are all coated with a three-proof paint coating to achieve protection against corrosion, moisture, and dust.

[0040] The working principle of this utility model is as follows:

[0041] When the six-way rotary joint is in operation, the rotating body 11 rotates together with the rotating parts of the equipment, while the stator assembly 2 remains stationary. The medium enters the oil passage 23 from the stator welded straight joint 22, and then flows out through the annular oil groove 13 and the rotor welded straight joint 12, realizing the transfer of the medium between the rotating and stationary parts. The shaft uses a rotary square ring 5, O-ring 8, and sealing retainer ring 9 to effectively prevent medium leakage, and the deep groove ball bearing 6 ensures the stable rotation of the rotating body 11.

Claims

1. A six-way rotary joint, comprising a stator assembly (2) and a rotor assembly (1) sleeved on the outside of the stator assembly (2) and rotatably assembled with the stator assembly (2), characterized in that: The rotor assembly (1) includes a rotating body (11), and six annular oil grooves (13) are spaced axially on the inner wall of the rotating body (11) and are arranged circumferentially along the inner wall of the rotating body (11). Six rotor welding straight-through joints (12) are provided on the side wall of the rotating body (11) and are connected to the six annular oil grooves (13) in a one-to-one correspondence. The stator assembly (2) includes a fixed shaft (21) rotatably assembled with the inner wall of the rotating body (11). The right side of the fixed shaft (21)... The end is flush with the right end of the rotating body (11), the left end of the fixed shaft (21) protrudes from the left end of the rotating body (11), and the left end of the fixed shaft (21) is provided with a flange (3) by an internal hexagon screw (4). The left side wall of the fixed shaft (21) is provided with six stator welding straight connectors (22), and the interior of the fixed shaft (21) is provided with six oil passages (23) that are connected one-to-one with each stator welding straight connector (22) and each annular oil groove (13).

2. The six-way rotary joint according to claim 1, characterized in that: The inner wall of the rotating body (11) is provided with a number of annular sealing grooves (14) spaced apart along the axial direction. The annular sealing grooves (14) are located on both sides of each annular oil groove (13), and a shaft rotary square ring (5) is provided in the annular sealing groove (14) between the rotating body (11) and the fixed shaft (21) for sealing.

3. The six-way rotary joint according to claim 1, characterized in that: The inner walls of the rotating body (11) are respectively provided with bearing ring grooves (15) along the circumferential direction at both ends. The bearing ring grooves (15) are provided with deep groove ball bearings (6) located between the rotating body (11) and the fixed shaft (21) to support the rotation of the rotating body (11).

4. The six-way rotary joint according to claim 3, characterized in that: The inner walls of the rotating body (11) are respectively provided with end annular sealing grooves (16) along the circumferential direction at both ends. The end annular sealing grooves (16) are respectively located inside the bearing ring groove (15) on the same side. The end annular sealing grooves (16) are provided with an O-ring (8) located between the rotating body (11) and the fixed shaft (21) for sealing and a sealing retainer (9) located outside the O-ring (8).

5. The six-way rotary joint according to claim 3, characterized in that: The right end of the rotating body (11) is provided with a shaft retaining ring (7) located outside the deep groove ball bearing (6).

6. The six-way rotary joint according to claim 1, characterized in that: The oil passage (23) is also connected to one end of the fixed shaft (21), and the end of the fixed shaft (21) is provided with a plug (24) for sealing the oil passage (23).

7. The six-way rotary joint according to claim 1, characterized in that: The six rotor welding straight connectors (12) are arranged in two rows along the circumference of the rotating body (11), each row including three arranged at intervals along the axial direction of the rotating body (11), and the rotor welding straight connectors (12) in the two rows are staggered; the six stator welding straight connectors (22) are arranged in three rows along the circumference of the fixed shaft (21), each row including two arranged at intervals along the axial direction of the fixed shaft (21), and the two stator welding straight connectors (22) in the middle row are on the same straight line as one row of rotor welding straight connectors (12).

8. The six-way rotary joint according to claim 1, characterized in that: The outer surfaces of the rotating body (11), the fixed shaft (21), and the flange (3) are all coated with a three-proof paint coating.

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