Sample crusher having a circumferential limiting component and a damping mechanism

A sample crusher, comprising:

• a main body housing;
• an electric motor arranged in the main body housing;
• and
• a swing mechanism arranged in the main body housing,
• wherein the swing mechanism comprises a transmission shaft, a swing disk for allowing a grinding tube to be placed thereon, and a circumferential limiting component, and the transmission shaft is driven by the electric motor to rotate, an obliquely arranged bearing is sleeved on the transmission shaft, an included angle is formed between an axis of the bearing and an axis of the transmission shaft, the swing disk is mounted on the bearing, the swing disk and the bearing are concentrically arranged, and the swing disk is connected to the circumferential limiting component,
• wherein the circumferential limiting component comprises a mounting portion and a plurality of limiting portions, the mounting portion is integrally formed with the plurality of limiting portions, the circumferential limiting component is mounted on the electric motor by means of the mounting portion, and each of the plurality of limiting portions is connected to the swing disk,
• and wherein the mounting portion is arranged in the form of a ring, each of the plurality of limiting portions is bar-shaped, and each of the plurality of limiting portions is integrally connected to an edge of the mounting portion, and is arranged along the edge of the mounting portion and extends radially toward the outside.