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CN-224214918-U - Six-way rotary joint

CN224214918UCN 224214918 UCN224214918 UCN 224214918UCN-224214918-U

Abstract

The utility model discloses a six-way rotary joint, which comprises a stator assembly and a rotor assembly sleeved outside the stator assembly and assembled with the stator assembly in a rotating way, wherein the rotor assembly comprises a rotating body, six annular oil grooves are formed in the inner wall of the rotating body at intervals along the circumferential direction of the inner wall of the rotating body, six rotor welding straight-through joints communicated with the six annular oil grooves in a one-to-one correspondence way are arranged on the side wall of the rotating body, the stator assembly comprises a fixed shaft assembled with the inner wall of the rotating body in a rotating way, 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, six stator welding straight-through joints are arranged on the side wall of the left end of the fixed shaft, and six oil ducts with two ends communicated with the stator welding straight-through joints and the annular oil grooves in a one-to-one correspondence way are arranged inside the fixed shaft. The utility model has the advantages of large number of passages, good sealing performance and high reliability.

Inventors

  • TONG YUPAN
  • Da Jiacheng
  • LIANG LIWEI

Assignees

  • 石家庄市液压有限责任公司

Dates

Publication Date
20260508
Application Date
20250722

Claims (8)

  1. 1. The six-way rotary joint comprises a stator assembly (2) and a rotor assembly (1) which is sleeved outside the stator assembly (2) and assembled with the stator assembly (2) in a rotating way, and is characterized in that the rotor assembly (1) comprises a rotary body (11), six annular oil grooves (13) which are circumferentially formed in the inner wall of the rotary body (11) are formed in the inner wall of the rotary body (11) at intervals along the axial direction, six rotor welding straight-through joints (12) which are communicated with the six annular oil grooves (13) in a one-to-one correspondence way are arranged on the side wall of the rotary body (11), the stator assembly (2) comprises a fixed shaft (21) which is assembled with the inner wall of the rotary body (11) in a rotating way, the right end of the fixed shaft (21) is flush with the right end of the rotary body (11), the left end of the fixed shaft (21) protrudes out of the left end of the rotary body (11), a flange (3) is arranged at the left end of the fixed shaft (21) through an inner hexagonal screw (4), six stator welding straight-through joints (22) are arranged on the left end side wall of the fixed shaft (21), and six oil ducts (23) which are communicated with the stator welding straight-through joints (22) and the annular oil grooves (13) in one-to-one correspondence.
  2. 2. The six-way rotary joint according to claim 1, wherein the inner wall of the rotary body (11) is provided with a plurality of annular sealing grooves (14) which are arranged along the circumferential direction of the inner wall of the rotary body (11) at intervals along the axial direction, the annular sealing grooves (14) are respectively positioned at two sides of each annular oil groove (13), and a square rotary ring (5) for a shaft which is positioned between the rotary body (11) and the fixed shaft (21) and used for realizing sealing is arranged in the annular sealing grooves (14).
  3. 3. The six-way rotary joint according to claim 1, wherein the two ends of the inner wall of the rotary body (11) are respectively provided with a bearing ring groove (15) along the circumferential direction, and a deep groove ball bearing (6) which is positioned between the rotary body (11) and the fixed shaft (21) and used for supporting the rotary body (11) to rotate is arranged in the bearing ring groove (15).
  4. 4. A six-way rotary joint according to claim 3 is characterized in that two ends of the inner wall of the rotary body (11) are respectively provided with an end annular sealing groove (16) along the circumferential direction, the end annular sealing grooves (16) are respectively positioned on the inner sides of the same-side bearing annular grooves (15), and sealing check rings (9) which are positioned between the rotary body (11) and the fixed shaft (21) and used for realizing sealing and positioned on the outer sides of the O-shaped rings (8) are arranged in the end annular sealing grooves (16).
  5. 5. A six-way rotary joint according to claim 3, characterized in that the right end of the rotary body (11) is provided with a shaft retainer ring (7) located outside the deep groove ball bearing (6).
  6. 6. The six-way rotary joint according to claim 1, wherein the oil duct (23) is further communicated with one end of the fixed shaft (21), and a plug (24) for plugging the oil duct (23) is arranged at the end of the fixed shaft (21).
  7. 7. Six-way rotary joint according to claim 1, characterized in that six rotor welding through joints (12) are arranged in two rows along the circumference of the rotary body (11), each row comprises three rotor welding through joints (12) arranged at intervals along the axial direction of the rotary body (11), and the two rows of rotor welding through joints (12) are staggered, six stator welding through joints (22) are arranged in three rows along the circumference of the fixed shaft (21), each row comprises two stator welding through joints (22) arranged at intervals along the axial direction of the fixed shaft (21), and the two stator welding through joints (22) of the middle row are on the same straight line with one row of rotor welding through joints (12).
  8. 8. The six-way rotary joint according to claim 1, wherein the outer surfaces of the rotary body (11), the fixed shaft (21) and the flange (3) are provided with three-proofing paint coatings.

Description

Six-way rotary joint Technical Field The utility model relates to the technical field of rotary joints, in particular to a six-way rotary joint. Background In many industrial fields, such as metallurgy, electricity, chemical industry, etc., it is often necessary to transfer various fluid media, such as hydraulic oil, compressed air, lubricating oil, etc., between rotating and stationary components. Rotary joints serve as a key basic component and play a critical role in such applications. The traditional rotary joint is generally small in number of passages and relatively simple in structure, and is difficult to meet the requirements of multi-passage, high-precision and high-reliability transmission in the modern industry. Under some complex working conditions, such as a multipoint lubrication system, a multi-path hydraulic control system and the like of large mechanical equipment, a plurality of different media need to be transmitted simultaneously, and the rotary joint is required to have good sealing performance, rotation stability and long service life. In addition, the problems of leakage, abrasion and the like are easy to occur in the long-term use process of some conventional rotary joints, the normal operation and the production efficiency of equipment are affected, and meanwhile, the maintenance cost and the safety risk are increased. Therefore, the development of a novel multi-path and high-performance rotary joint has important practical significance. Disclosure of utility model The utility model aims to solve the technical problems of limited number of passages, poor sealing performance, low reliability and the like of the conventional rotary joint. In order to solve the technical problems, the technical scheme adopted by the utility model is as follows. The six-way rotary joint comprises a stator assembly and a rotor assembly which is sleeved outside the stator assembly and is rotationally assembled with the stator assembly, wherein the rotor assembly comprises a rotary body, six annular oil grooves which are circumferentially formed in the inner wall of the rotary body are axially arranged at intervals, six rotor welding straight-through joints which are communicated with the six annular oil grooves in a one-to-one correspondence mode are arranged on the side wall of the rotary body, the stator assembly comprises a fixed shaft which is rotationally assembled with the inner wall of the rotary body, the right end of the fixed shaft is flush with the right end of the rotary body, the left end of the fixed shaft protrudes out of the left end of the rotary body, a flange is arranged at the left end of the fixed shaft through an inner hexagon screw, six stator welding straight-through joints are arranged on the side wall of the left end of the fixed shaft, and six oil ducts with two ends which are communicated with the stator welding straight-through joints and the annular oil grooves in a one-to-one correspondence mode are arranged inside the fixed shaft. Preferably, the inner wall of the rotating body is provided with a plurality of annular sealing grooves which are arranged along the circumferential direction of the inner wall of the rotating body at intervals along the axial direction, the annular sealing grooves are respectively positioned at two sides of each annular oil groove, and a square rotating ring for the shaft which is positioned between the rotating body and the fixed shaft and used for realizing sealing is arranged in the annular sealing grooves. Preferably, the two ends of the inner wall of the rotating body are respectively provided with a bearing ring groove along the circumferential direction, and a deep groove ball bearing which is positioned between the rotating body and the fixed shaft and used for supporting the rotating body to rotate is arranged in the bearing ring groove. Preferably, the two ends of the inner wall of the rotating body are respectively provided with an end annular sealing groove along the circumferential direction, the end annular sealing grooves are respectively positioned at the inner sides of the bearing ring grooves of the same side, and the end annular sealing grooves are internally provided with O-shaped rings and sealing check rings, wherein the O-shaped rings are positioned between the rotating body and the fixed shaft and used for realizing sealing, and the sealing check rings are positioned at the outer sides of the O-shaped rings. Preferably, a shaft retainer ring positioned outside the deep groove ball bearing is arranged at the right end of the rotating body. Preferably, the oil duct is also communicated with one end part of the fixed shaft, and a plug for plugging the oil duct is arranged at the end part of the fixed shaft. Preferably, the six rotor welding straight-through joints are arranged in two rows along the circumference of the rotating body, each row comprises three rotor welding straight-through joints arranged at intervals along th