Supporting caster

Abstract

The invention discloses a supporting caster comprising a caster mounting screw, a movable leg support sleeve, a thrust ball bearing, a first roller shaft, a caster carrier, a second roller shaft and a deep groove ball bearing. The first roller shaft, the thrust ball bearing, the caster carrier, the second roller shaft and the deep groove ball bearing are all located in an inner cavity of the movable leg support sleeve; the movable leg support sleeve rotates relative to the caster mounting screw to move upwards, and the deep groove ball bearing is enabled to contact with and support the ground; the movable leg support sleeve rotates relative to the caster mounting screw to move downwards, the deep groove ball bearing is enabled to leave the ground, and the movable leg support sleeve contacts with and supports the ground at the moment. The supporting caster of the brand-new structure design different from the traditional universal casters has the advantages of high load capacity, stable bearing and adjustable height.

Description

technical field [0001] The invention relates to a caster, in particular to a multi-purpose supporting caster with a large bearing capacity. Background technique [0002] In some large extrusion molding machines, before the mold is assembled and disassembled, the mold loading and unloading table is required to load the mold and move the mold. When the mold loading and unloading table moves the mold to the docking position, the docking and height adjustment are carried out. The loading and unloading table of the mold is also relatively heavy. However, the existing mold loading and unloading table adopts ordinary swivel casters with locking function that cannot meet the above requirements, as follows: 1) Ordinary swivel casters with locking function have a small load-bearing weight and are easily damaged in a heavy-duty working environment; 2) Ordinary swivel casters with locking function are unstable in locking state, prone to shaking, which increases the difficulty of mold d...

AI Technical Summary

Problems solved by technology

However, the existing mold loading and unloading table adopts ordinary swivel casters with locking function that cannot meet the above requirements, as follows: 1) Ordinary swivel casters with locking function have a small load-bearing weight and are easily damaged in a heavy-duty working environment; 2) Ordinary swivel casters with anti-lock function are unstable in locking state, prone to shaking, which increases the difficulty of mold docking; 3) Ordinary universal casters with anti-lock function have no height adjustment, and it is inconvenient to assemble and disassemble the mould.

Images