Sealed bearing, dismounting tool, and using method of dismounting tool

Abstract

The invention provides a sealed bearing, a dismounting tool, and a using method of the dismounting tool, and belongs to the fields of bearings and related hardware tools. A problem that sealing ringsare difficultly extracted from existing bearings is solved in the invention. The sealed bearing comprises an inner ring, an outer ring, a retainer and a steel ball, and further comprises a sealing ring, a reinforcing plate is arranged in the sealing ring, the outer end surface of the sealing ring is provided with a dismounting groove, the sealed bearing further comprises a pulling sleeve, the inner end of the pulling sleeve goes through the sealing ring and is fixed to the outer side surface of the reinforcing plate, the outer end of the pulling sleeve is located in the dismounting groove, theinner wall and the outer wall of the pulling sleeve are provided with a plurality of positioning grooves and fixing grooves, the longitudinal direction of the positioning grooves are parallel to theaxis of the pulling sleeve, the outer ends of the positioning grooves are located at the outer end of the pulling sleeve, every fixing groove includes a strip-shaped guiding groove with the length direction being parallel to the axis of the pulling sleeve and a locking groove which is longitudinally arranged along the circumferential direction of the pulling sleeve, the rear ends of the locking grooves are vertically connected with the inner ends of the guiding grooves, and the outer ends of the guiding grooves are located at the outer end of the pulling sleeve. The sealed bearing has a high strength, and the dismounting tool can reduce the dismounting difficulty of the sealed bearing.

Description

technical field [0001] The invention belongs to the technical field of bearings and related hardware tools, and relates to a sealed bearing, a removal tool and a method for using the removal tool. Background technique [0002] The bearing seal is mainly to prevent the lubricant inside the bearing from leaking out, and to prevent external moisture, dust, foreign matter, etc. from entering the inside of the bearing, which in turn affects the operating performance and service life of the bearing. The existing patent number is ZL2016102443836, which is a Chinese invention patent named "a detachable deep groove ball bearing sealing structure". A pull rod with an internal thread groove at the end is installed on the top, and a dismantling device with an external thread is used to screw the internal thread groove at the end of the pull rod, and the sealing ring is pulled outward to separate the sealing ring from the bearing, and then lubricant can be added to the inside . However...

AI Technical Summary

Problems solved by technology

[0003] 1. Since several pull rods are distributed and fixed on the sealing ring, and several pull rods are respectively connected to several dismantling devices, it is impossible to guarantee that several dismantling devices pull several pull rods with the same force at the same time, so the pull rod with greater force will be pulled out of the sealing ring first , resulting in bending and deformation of the sealing ring and the reinforcement plate;

[0004] 2. During the disassembly process, it is impossible to ensure that the disassembly device pulls the pull rod axially along the inner ring. Since the sealing ring, the inner ring and the outer ring will always rotate relative to each other, if force is applied in other directions, it will not only cause the sealing ring and the reinforcement plate to bend and deform, At the same time, it may also cause the tie rod to break, and the difficulty of unloading will also increase;

[0005] 3. Several dismantling devices need to be connected to the internal thread grooves of several pull rods one by one, resulting in low efficiency in connecting the pull rods to the dismantling devices;

[0006] 4. During the disassembly process, it is necessary to hold the bearing by hand and use the disassembly device to pull the pull rod, which is not only unhygienic, but also directly exerts force on the bearing with the hand, which may affect the bearing structure

Images