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CN-122016911-A - Oil seal cold resistance test fixture

CN122016911ACN 122016911 ACN122016911 ACN 122016911ACN-122016911-A

Abstract

The invention relates to a tool clamp for an oil seal cold resistance test, which relates to the field of cold resistance verification of mechanical sealing elements and is used for testing abnormal phenomena generated when an oil seal is unevenly stressed, and comprises a base, an offset assembly and a testing assembly, wherein the offset assembly comprises an offset seat, a bearing seat, an offset piece and an outer ring, the offset seat and the base are movably arranged, the offset seat is provided with an offset groove, the bearing seat is provided with an offset block, the offset block is slidably arranged in the offset groove, the offset piece can drive the bearing seat to move, the outer ring is fixed with the bearing seat, and the outer ring is fixedly provided with the oil seal; the test assembly comprises a flange and a test column, wherein the flange is rotationally connected with the base, part of oil seal lips of the oil seal are abutted against the test column, the axial direction of the test column is perpendicular to the moving direction of the bearing seat, and the structure realizes effective inspection and control of the quality of the oil seal sealing lips in an oil seal cold resistance test.

Inventors

  • Liu Xiaao
  • YE JIANFENG
  • YE LIANQIANG
  • LI BOHUA
  • YU BO

Assignees

  • 万向钱潮股份公司

Dates

Publication Date
20260512
Application Date
20260327

Claims (8)

  1. 1. An oil blanket cold resistance test frock clamp for the unusual phenomenon that produces when test oil blanket (4) inhomogeneous atress, its characterized in that includes: A base (1); the offset assembly (2) comprises an offset seat (21), a bearing seat (22), an offset piece (23) and an outer ring (24), wherein the offset seat (21) is movably arranged with the base (1), the offset seat (21) is provided with an offset groove (211), the bearing seat (22) is provided with an offset block (221), the offset block (221) is slidably arranged in the offset groove (211), the offset piece (23) can drive the bearing seat (22) to move, the outer ring (24) is fixed with the bearing seat (22), and the outer ring (24) is fixedly provided with the oil seal (4); The testing assembly (3) comprises a flange (31) and a testing column (32), wherein the flange (31) is rotationally connected with the base (1), one end of the testing column (32) is fixed with the flange (31), the other end of the testing column (32) is inserted into the outer ring (24), at least part of an oil seal lip of the oil seal (4) is abutted to the testing column (32), and the axial direction of the testing column (32) is perpendicular to the moving direction of the bearing seat (22).
  2. 2. The oil seal cold resistance test fixture according to claim 1, wherein the outer ring (24) is provided with an annular clamping groove (241), the oil seal (4) is fixedly clamped in the clamping groove (241), and the oil seal (4) and the outer ring (24) are coaxially arranged.
  3. 3. The oil seal cold resistance test fixture according to claim 1, wherein the bearing seat (22) is provided with a mounting hole (222), the outer ring (24) is fixedly arranged in the mounting hole (222), and the mounting hole (222), the outer ring (24) and the oil seal (4) are coaxially arranged.
  4. 4. The oil seal cold resistance test fixture according to claim 1, wherein the offset assembly (2) further comprises two supports (25), the two supports (25) are fixed with the offset seat (21), the two supports (25) are located at two sides of the moving direction of the bearing seat (22), the two offset pieces (23) are arranged at two sides, the two offset pieces (23) are respectively and movably arranged at the two supports (25), and the moving direction of the offset pieces (23) is perpendicular to the axial direction of the test column (32).
  5. 5. The oil seal cold resistance test fixture according to claim 1, wherein the offset assembly (2) further comprises a moving block (26), the moving block (26) is movably arranged with the base (1), and the moving direction of the moving block (26) is parallel to the axial direction of the test column (32).
  6. 6. The oil seal cold resistance test fixture according to claim 1, wherein the offset groove (211) comprises a first groove (2111) and a second groove (2112) which are communicated, the first groove (2111) is positioned at the lower side of the second groove (2112), and the width of the first groove (2111) is larger than the width of the second groove (2112) along the axial direction of the test column (32); The offset block (221) comprises a first block (2211) and a second block (2212) which are integrally formed, the first block (2211) is located at the lower side of the second block (2212), the width of the first block (2211) is larger than that of the second block (2212) along the axial direction of the test column (32), the first block (2211) is slidably arranged in the first groove (2111), and the second block (2212) is slidably arranged in the second groove (2112).
  7. 7. The oil seal cold resistance test fixture according to claim 1, wherein a fixing portion (311) protrudes from a side surface of the flange (31) toward the test column (32), the fixing portion (311) is provided with a fixing cavity (3111), and a part of the test column (32) is fixedly arranged in the fixing cavity (3111).
  8. 8. The oil seal cold resistance test fixture according to claim 1, wherein the end portion of the test column (32) close to the outer ring (24) is provided with a first step portion (321), a second step portion (322) and a third step portion (323) with gradually increased diameters, and the second step portion (322) can be abutted with a sealing lip of the oil seal (4).

Description

Oil seal cold resistance test fixture Technical Field The invention relates to the field of cold resistance verification of mechanical sealing elements, in particular to an oil seal cold resistance test fixture. Background In the field of sealing elements, oil seals are widely applied to rotating or reciprocating motion scenes such as automobile engines, engineering mechanical transmission systems, aerospace hydraulic mechanisms and the like as core components for preventing fluid leakage, and the cold resistance of the oil seals directly influences the operation reliability of equipment under cold weather or low-temperature working conditions. However, the existing oil seal cold resistance testing method has obvious defects. Existing tests typically leave the oil seal in a low temperature environment for only a period of time and then visually check for cracking. The static test method cannot simulate the dynamic contact of the oil seal with the high-speed rotating shaft body at low temperature and bear the actual working condition of uneven stress generated by radial offset, so that the cracking failure risk of the oil seal under the complex condition is difficult to accurately evaluate. Disclosure of Invention The technical problem to be solved by the invention is to overcome the defects that the prior art lacks a special tool, cannot effectively clamp a bearing with an oil seal, cannot provide a high-speed rotating shaft body simulating real working conditions and cannot test uneven stress and abnormal failure phenomena of the oil seal caused by radial play or installation offset, so as to provide the tool clamp for the cold resistance test of the oil seal. In order to achieve the above purpose, the invention adopts the following technical scheme: The utility model provides an oil blanket cold resistance test frock clamp for the unusual phenomenon that produces when testing the inhomogeneous atress of oil blanket, its characterized in that includes that the base sets up the rack along the upper side of vertical direction, the rack can with the tooth's socket intermeshing that the movable block set up along the downside of vertical direction for the displacement on the horizontal direction is realized to the offset subassembly. The offset assembly comprises an offset seat, a bearing seat, an offset part and an outer ring, wherein the offset seat and the base are movably arranged, the offset seat is provided with an offset groove, the bearing seat is provided with an offset block, the offset block is slidably arranged in the offset groove, the offset part can drive the bearing seat to move, the outer ring is fixed with the bearing seat, the outer ring is fixedly provided with the oil seal, the offset seat and the base are movably arranged, the offset seat is provided with an offset groove, the bearing seat is provided with an offset block, the offset block is slidably arranged in the offset groove, the offset part can drive the bearing seat to move, and the outer ring is fixed with the bearing seat, so that the outer ring can avoid radial play and axial play generated by rotation of the test column through the jogging between the offset block and the offset groove, and the accuracy of the cold resistance test result of the oil seal is ensured. The testing assembly comprises a flange and a testing column, wherein the flange transmits power of system operation to the testing column, the flange is in rotary connection with the base, one end of the testing column is fixed with the flange, the other end of the testing column is inserted into the outer ring, at least part of oil seal lips of the oil seal are in butt joint with the testing column, the axial direction of the testing column is perpendicular to the moving direction of the bearing seat, one end of the testing column is fixed with the flange due to the rotary connection of the flange and the base, the other end of the testing column is inserted into the outer ring, at least part of the oil seal lips of the oil seal are in butt joint with the testing column, so that the flange can keep a relatively static state with the testing column, and further the flange drives the testing column to realize the detection of the quality of the oil seal lips of the oil seal. Preferably, the outer ring is provided with an annular clamping groove, the oil seal is fixedly clamped in the clamping groove, and the oil seal and the outer ring are coaxially arranged; because the outer lane is equipped with annular draw-in groove, the oil blanket fixing clip is located in the draw-in groove, just the oil blanket with the coaxial setting of outer lane makes the oil blanket is located all the time in the test process annular draw-in groove can not be because of the rotation of test post makes the oil blanket translocation. The bearing seat is provided with a mounting hole, the outer ring is fixedly arranged in the mounting hole, the outer ring and the oil seal are coaxially ar