Complex pull-out mechanism

Abstract

The invention discloses a complex pull-out mechanism. The complex pull-out mechanism comprises a bearing outer ring pull-out mechanism and a half shaft pull-out mechanism, and the bearing outer ring pull-out mechanism and the half shaft pull-out mechanism are arranged on a same supporting component (2) and in transmission connection with a same transmission component (1). The bearing outer ring pull-out mechanism further comprises a linkage component I and a bearing outer ring component (4), and the half shaft pull-out mechanism comprises a linkage component II and a half shaft (6). A screw rod (11) in the transmission component (1) is in a double-screw-direction thread structure, a left-hand thread section (112) of the screw rod (11) is in matched screw connection with the transmission component (1), and a right-hand thread section (111) of the screw rod (11) is in matched screw connection with the linkage component I or the linkage component II. The complex pull-out mechanism has the advantages of reasonable structural design, simple manufacturing process, convenience in use, safety, reliability, effectiveness in production efficiency improvement and significant reduction of production and use costs.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a dismantling tool, in particular to a repair tool for an electric tricycle, and in particular to a composite pull-out mechanism. Background technique [0002] At present, in mechanical maintenance operations, especially in the case of tricycle half shafts and bearing damage. Due to the interference fit between the bearing and the shaft or bearing seat, it is difficult to disassemble the bearing, and the disassembly effect is often not good. In order to remove the outer ring of the bearing and the three-wheel half-shaft, there are three methods for dismantling the outer ring of the half-shaft and the bearing in the prior art: 1. Directly disassemble the gearbox. Oil leaks easily and can cause damage to the housing or shaft. 2. When disassembling the pull hammer, the thread of the half shaft may be damaged due to the large impact force. If the thread of the half shaft is damaged...

AI Technical Summary

Problems solved by technology

Due to the interference fit between the bearing and the shaft or bearing seat, it is difficult to disassemble the bearing, and the disassembly effect is often not good

In order to remove the outer ring of the bearing and the three-wheel half-shaft, there are three methods for dismantling the outer ring of the half-shaft and the bearing in the prior art: 1. Directly disassemble the gearbox. Oil leaks easily and can cause damage to bearing housings or shafts

2. When disassembling the pull hammer, the thread of the half shaft is easy to be damaged due to the large impact force. If the thread of the half shaft is damaged, the half shaft cannot be disassembled, and the outer ring of the bearing cannot be disassembled.

3. Patent No. 201420403709.1 is a utility model patent titled "A Half-shaft and Bearing Dismounting Device and a Bearing Outer Ring Dismounting Device", which is determined by the design structure of the patent and cannot be used when the half-shaft thread is damaged. The screw adopts a single right-handed thread, and the nut can only be rotated under dry friction to pull out the half shaft, which is difficult to operate. When the outer ring of the bearing is to be pulled out, the matching chuck must be replaced, which is low in work efficiency and poor in applicability

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