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CN-224214597-U - Sealing cross shaft universal joint for commercial vehicle

CN224214597UCN 224214597 UCN224214597 UCN 224214597UCN-224214597-U

Abstract

The utility model relates to the technical field of universal joint cross shafts and discloses a sealing cross shaft universal joint for a commercial vehicle, which comprises a cross shaft main body, wherein a shaft neck is fixedly arranged on the cross shaft main body, a shaft sleeve is sleeved outside the shaft neck, a needle roller is arranged in the shaft sleeve, a first oil seal is sleeved on one side of the shaft neck, which is close to the cross shaft main body, a groove is formed in the inner side of a port of the shaft sleeve, a second oil seal is arranged on the inner wall of the groove, the first oil seal is an external X-shaped oil seal, the second oil seal is an internal star-shaped oil seal, two inner diameter lips of the first oil seal are in interference fit with steps of the cross shaft main body, two outer diameter X-faces of the first oil seal are respectively in compression seal with the root of the cross shaft main body and the port face of the shaft sleeve, two outer diameter lips of the second oil seal are in compression seal with the inner wall of the groove, the inner diameter lips of the second oil seal are in compression seal with the outer wall of the shaft neck, and the problems that lubricating oil leakage, external dust impurities invasion and the like easily occur in the existing equipment are solved.

Inventors

  • Li Yeqiao
  • SHEN LIDAN
  • ZHANG YUANHONG

Assignees

  • 杭州丰轿转向部件有限公司

Dates

Publication Date
20260508
Application Date
20250714

Claims (7)

  1. 1. The utility model provides a sealed cross universal joint for a commercial vehicle, includes cross main part (100), fixedly be provided with axle journal (200) on cross main part (100), axle sleeve (300) are equipped with to axle journal (200) outside cover, the inside of axle sleeve (300) is provided with kingpin (320), its characterized in that, A first oil seal (410) is sleeved on one side, close to the cross shaft main body (100), of the shaft journal (200), a groove (310) is formed in the inner side of the port position of the shaft sleeve (300), and a second oil seal (420) is arranged on the inner wall of the groove (310); The first oil seal (410) is an external X-shaped oil seal, the second oil seal (420) is an internal star-shaped oil seal, two inner diameter lips of the first oil seal (410) are sealed with steps of the cross shaft main body (100) in an interference fit mode, two outer diameter X faces of the first oil seal (410) are respectively sealed with the root of the cross shaft main body (100) and the port face of the shaft sleeve (300) in a compression mode, two outer diameter lips of the second oil seal (420) are sealed with the inner wall of the groove (310) in a compression mode, and the inner diameter lips of the second oil seal (420) are sealed with the outer wall of the shaft neck (200) in a compression mode.
  2. 2. The sealing cross joint for a commercial vehicle according to claim 1, wherein a sealing ring (430) is disposed between the first oil seal (410) and the second oil seal (420), the sealing ring (430) is disposed inside the shaft sleeve (300), an outer peripheral surface of the sealing ring (430) is disposed in contact with an inner wall of the shaft sleeve (300), and an inner peripheral surface of the sealing ring (430) is disposed in contact with an outer wall of the journal (200).
  3. 3. The sealing cross joint for a commercial vehicle according to claim 1, wherein an adsorption block (330) integrated with the shaft sleeve (300) is fixedly arranged on the surface of the shaft sleeve (300), and the adsorption block (330) is made of a magnetic material and is used for adsorbing ferromagnetic abrasive particles in lubricating oil and preventing the abrasive particles from cyclically wearing parts.
  4. 4. A sealing cross joint for a commercial vehicle according to claim 3, wherein the surface of the adsorption block (330) is provided with an oil lubrication groove (340), and the oil lubrication groove (340) is used for storing more lubricating oil.
  5. 5. The sealing cross joint for a commercial vehicle according to claim 1, wherein the cross body (100) and the journal (200) are integrally formed to enhance the connection strength between the cross body (100) and the journal (200), thereby improving the overall reliability of the joint.
  6. 6. The sealing cross joint for a commercial vehicle according to claim 2, wherein the sealing ring (430) is made of an elastic material, has an O-shaped cross section, and forms a plurality of sealing lines inside the sleeve (300), thereby further improving the sealing effect.
  7. 7. The sealing cross joint for a commercial vehicle according to claim 2, wherein the sealing ring (430) is hollow, and an adsorptive material is placed in the sealing ring (430), and ventilation holes are formed in the sealing ring (430).

Description

Sealing cross shaft universal joint for commercial vehicle Technical Field The utility model relates to the technical field of universal joint cross shafts, in particular to a sealing cross shaft universal joint for a commercial vehicle. Background The universal joint is generally subjected to a greater load during torque and motion transfer from the drive shaft assembly, and particularly the heavy duty universal joint is subjected to a greater load. The cross shaft is used as an important supporting part of the universal joint, and the joint is broken, early fatigue failure and the like caused by insufficient strength, so that the safety of the transmission assembly is greatly hidden. Therefore, the improvement of the strength of the universal joint cross shaft is particularly important for prolonging the service life of the universal joint transmission shaft assembly and improving the driving safety of an automobile. The utility model discloses a Chinese patent with publication number CN218325876U, which discloses a universal joint cross shaft for vehicles, comprising a cross shaft, an oil seal ring, a retainer ring, an outer shaft sleeve and a brass oil nozzle, wherein a cross oil way is arranged in the cross shaft, the brass oil nozzle is fixed on the cross shaft and communicated with the cross oil way, a needle roller is arranged on an annular array of an inner ring of the outer shaft sleeve, an end oil groove is arranged at the bottom of the outer shaft sleeve for lubricating grease to be stored and for providing lubrication in the rotating process of the needle roller, a convex positioning flange is fixedly arranged on the inner bottom wall of the outer shaft sleeve, and a wear-resistant gasket is sleeved outside the positioning flange. When the rolling needle is assembled, a proper amount of lubricating oil is added into the end oil groove and the straight groove or the flaring groove, in use, the wear-resistant gasket plays a role in limiting axial displacement and instantly maintains the lubrication of the end part of the rolling needle when the wear-resistant gasket is displaced under the cooperation of the lubricating oil, and the lubricating oil stored in the straight groove or the flaring groove can be more quickly contacted with the rolling needle to lubricate the rolling needle and limit the axial movement of the lubricating grease after being pressed, so that the loss rate is reduced. In the use process of the device, the problems of lubricating oil leakage, invasion of external dust impurities and the like are easy to occur, so that the abrasion of the journal and the shaft sleeve is aggravated, and the service life is shortened. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides a sealing cross shaft universal joint for a commercial vehicle, which has the advantages of blocking dust and preventing lubricating oil from leaking, and solves the problems that the prior equipment is easy to leak lubricating oil, and the external dust and impurities invade. (II) technical scheme The technical scheme is that the sealing cross shaft universal joint for the commercial vehicle comprises a cross shaft main body, wherein a shaft neck is fixedly arranged on the cross shaft main body, a shaft sleeve is sleeved outside the shaft neck, a needle roller is arranged in the shaft sleeve, a first oil seal is sleeved on one side, close to the cross shaft main body, of the shaft neck, a groove is formed in the inner side of a port of the shaft sleeve, a second oil seal is arranged on the inner wall of the groove, the first oil seal is an external X-shaped oil seal, the second oil seal is an internal star-shaped oil seal, two inner diameter lips of the first oil seal are in interference fit with steps of the cross shaft main body, two outer diameter X faces of the first oil seal are respectively in compression seal with the root of the cross shaft main body and the port face of the shaft sleeve, two outer diameter lips of the second oil seal are in compression seal with the inner wall of the groove, and the inner diameter lips of the second oil seal are in compression seal with the outer wall of the shaft neck. Preferably, a sealing ring is arranged between the first oil seal and the second oil seal, the sealing ring is arranged in the shaft sleeve, the outer peripheral surface of the sealing ring is in fit with the inner wall of the shaft sleeve, and the inner peripheral surface of the sealing ring is in fit with the outer wall of the shaft neck. Preferably, the surface fixing of axle sleeve be provided with the absorption piece of axle sleeve integral type, the absorption piece is made by magnetic material for adsorb ferromagnetic abrasive particle in the lubricating oil, prevent abrasive particle circulation wearing and tearing part. Preferably, an oil lubrication groove is formed in the surface of the adsorption block, and the o