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CN-121974241-A - Bearing hot assembly lifting clamp

CN121974241ACN 121974241 ACN121974241 ACN 121974241ACN-121974241-A

Abstract

The invention discloses a bearing hot-assembly hoisting clamp which comprises a driving assembly and clamping jaws, wherein the clamping jaws comprise a first clamping jaw and a second clamping jaw, the first clamping jaw is hinged with the second clamping jaw, the end parts of the first clamping jaw and the end parts of the second clamping jaw are respectively provided with an extension claw, and the extension claws are provided with limiting structures.

Inventors

  • LI ZHANGMIN
  • ZHANG ZHIBO
  • Jiao Hongyun
  • HUANG MENGQIAN
  • CHEN YAXUAN
  • LEI YUANLIN
  • LI PANJUN
  • LIU PENGXIANG
  • LI LIANG
  • Huang Taogen
  • Chen Jianglang
  • ZHONG ZHIGANG
  • LIU YAPENG

Assignees

  • 新余钢铁股份有限公司

Dates

Publication Date
20260505
Application Date
20260224

Claims (9)

  1. 1. The bearing hot assembly hoisting clamp comprises a driving assembly and clamping jaws (1), wherein the clamping jaws (1) comprise a first clamping jaw (11) and a second clamping jaw (12), and the first clamping jaw (11) and the second clamping jaw (12) are hinged.
  2. 2. The bearing hot-assembly hoisting clamp according to claim 1, wherein the extension claw (2) is movably connected to the first clamping jaw (11) and the second clamping jaw (12), a chain (3) is detachably connected to the end of the extension claw (2), and the chain (3) is connected with the extension claw (2) through a bolt (24).
  3. 3. The bearing hot assembly hoisting clamp according to claim 2, wherein the chain (3) comprises an end chain plate (31), a limit groove (22) is formed in the bottom end of the extension claw (2), the end chain plate (31) is located in the limit groove (22), a jack (23) is formed in the outer portion of the bottom end of the extension claw (2), the plug pin (24) penetrates through the jack (23) and the end chain plate (31), and the end part of the plug pin (24) is of an annular structure.
  4. 4. A bearing hot-assembly hoisting clamp according to any one of claims 1-3, wherein the limiting structure comprises a double-ended screw rod (4), the double-ended screw rod (4) is arranged on the extension claw (2) in a penetrating mode, the double-ended screw rod (4) is horizontally arranged, threaded portions (41) are arranged at two ends of the double-ended screw rod (4), and limiting plates (42) are connected to the threaded portions (41) in a threaded mode.
  5. 5. The bearing hot-assembling hoisting clamp according to claim 4, wherein the driving assembly comprises a steel wire tightener (5), the steel wire tightener (5) is connected with a first clamping jaw (11) and a second clamping jaw (12) through a steel wire (51), a first connecting rod (6) is hinged to the top end of the first clamping jaw (11), a second connecting rod (7) is hinged to the top end of the second clamping jaw (12), the top end of the first connecting rod (6) is hinged to the top end of the second connecting rod (7), the first clamping jaw (11), the second clamping jaw (12), the first connecting rod (6) and the second connecting rod (7) form a four-connecting-rod structure, and a lifting ring (8) is connected to the hinged ends of the first connecting rod (6) and the second connecting rod (7).
  6. 6. The bearing hot-assembly hoisting clamp according to claim 4, wherein the ends of the first clamping jaw (11) and the second clamping jaw (12) are respectively provided with a limiting opening (13), the top end of the extension claw (2) is positioned in the limiting opening (13), a limiting part (15) is arranged in the limiting opening (13), and the limiting part (15) comprises a first limiting surface (151) and a second limiting surface (152).
  7. 7. The hoisting fixture for the thermal assembly of the bearing according to claim 2, wherein the chain (3) is uniformly provided with extension strips (32).
  8. 8. The bearing hot-assembling hoisting clamp according to claim 6, wherein the first clamping jaw (11) and the second clamping jaw (12) are respectively provided with an arc-shaped clamping part (14), the arc-shaped clamping part (14) and the inner side surface of the extension jaw (2) are respectively contacted with the bearing, and the top end of the extension jaw (2) is contacted with the first limiting surface (151).
  9. 9. The bearing hot-assembling hoisting clamp according to claim 6, wherein the inner side of the extension claw (2) is contacted with the chain (3) to form a bearing, the top end of the extension claw (2) is contacted with the second limiting surface (152), and the chain (3) is circumferentially arranged along the outer ring of the bearing.

Description

Bearing hot assembly lifting clamp Technical Field The invention belongs to the technical field of bearing hot assembly, and particularly relates to a lifting clamp for bearing hot assembly. Background Bearing thermal assembly (Hot Assembly Bearings) generally refers to the process of assembly by heating the inner race or other portion of the bearing to expand it for ease of mounting to a shaft or other component. The main purpose of using thermal assembly is to temporarily increase the clearance between the bearing and its mating parts, thereby reducing friction and stress during assembly and avoiding damage to the bearing. The usual hot-fitting procedure is as follows: 1. Heating the bearing inner ring, namely heating the bearing inner ring to a certain temperature, and heating the bearing inner ring by an electric heating furnace, an oil bath or a heater. The temperature is controlled to a suitable range, typically between 80 ℃ and 120 ℃, but the specific temperature needs to be adjusted according to the material and size of the bearing. 2. And (3) quick assembly, namely expanding the heated bearing inner ring to enlarge the gap between the bearing inner ring and the shaft or other matched parts. At this point the bearing is quickly assembled to the shaft and after it cools, the outer race contracts and fits snugly onto the shaft. 3. And after the assembly is completed, the original size of the bearing can be restored in the cooling process to form a tight matching relationship. Special attention is paid to the cooling speed in this process, and the bearing is prevented from being deformed or damaged due to abrupt temperature change. In step 2, the bearing needs to be assembled on the shaft rapidly, and the existing method is to sleeve or bind the bearing by using a steel cable, and then to hoist by using hoisting equipment. The prior method has the following problems: 1. The steel cable is manually sleeved or bound on the bearing, so that the operation is troublesome on one hand, and on the other hand, the bearing is high-temperature and easy to scald operators. 2. The steel cable is unstable in fixing the bearing, particularly in sleeving, the bearing is easy to slide in the lifting process, the bearing is deformed when the bearing is light, and the safety accident of casualties is caused when the bearing is heavy. 3. When the steel cable is used for hoisting the bearing, the posture of the bearing is uncontrollable, and when the bearing is in butt joint with the shaft, personnel are required to adjust and guide repeatedly, so that the steel cable is too troublesome, and the overall assembly efficiency is low. For example, patent publication No. CN221093367U discloses a large-scale bearing lifting device in 2024, 6 and 7 days, comprising a lifting disk, wherein the lifting disk is of a horizontally arranged annular structure, lugs are arranged on the lifting disk, the lugs are multiple in number and uniformly distributed along the circumference of the lifting disk and are fixed with the surface of the lifting disk into a whole, hooks are arranged on the lugs and are connected with the lugs through pin shafts, lifting rings are arranged on the upper surface of the lifting disk, and are uniformly distributed along the circumference of the lifting disk and are arranged at intervals with the lugs. The large-sized bearing hoisting device can only realize bearing hoisting, cannot meet the requirement of hot assembly, and cannot completely solve the technical problems described above. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides the bearing hot-assembly hoisting clamp which is high in applicability and high in hoisting stability and can meet the hoisting of bearings with various specifications. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The bearing hot-assembly hoisting clamp comprises a driving assembly and clamping jaws, wherein the clamping jaws comprise a first clamping jaw and a second clamping jaw, the first clamping jaw is hinged to the second clamping jaw, extension claws are arranged at the end parts of the first clamping jaw and the end part of the second clamping jaw, and a limiting structure is arranged on the extension claws. The extension claw is movably connected to the first clamping jaw and the second clamping jaw, a chain is detachably connected to the end part of the extension claw, and the chain is connected with the extension claw through a bolt. The chain comprises an end chain plate, a limiting groove is formed in the bottom end of the extension claw, the end chain plate is located in the limiting groove, a jack is formed in the outer portion of the bottom end of the extension claw, the bolt penetrates through the jack and the end chain plate, and the end of the bolt is of an annular structure. The limiting structure comprises a double-end screw rod, the double-end screw rod is