The braids of the 19th century produced the prototype of a braid crusher (hereinafter referred to as a braid crusher), which consisted of a braid rocker, a rope and human operation. Later, in 1858, the American Blake invented, designed and manufactured a real braid crusher. braid. The tabletop crusher is mainly composed of a fixed form, a moving form, a front and rear thrust toggle, a flywheel, an eccentric shaft and other components. The steam engine provides power. This formwork is a simple pendulum type. After continuous research and improvement, a chassis with higher working efficiency was manufactured.

This article introduces several types of characteristic theme destruction structures and.

1. Simple pendulum crusher

The simple pendulum crusher is mainly composed of fixed pendulum, movable pendulum, front and rear thrust toggle plates, flywheel, eccentric shaft and other components, as shown in the figure.

In the early 19th century, the prototype of the jaw crusher (hereinafter referred to as the jaw crusher) was produced, which consisted of a rocker, a rope and manual operation. Later, in 1858, American Black invented and designed a real jaw crusher, which was mainly composed of fixed jaw, movable jaw, front and rear thrust toggle plates, flywheel, eccentric shaft and other components, and powered by a steam engine. This jaw crusher was a simple swing type. After continuous research and improvement, a more efficient model was manufactured.

This article introduces the structure and characteristics of several representative jaw crushers.

1. Simple swing jaw crusher

The simple swing jaw crusher is mainly composed of fixed jaw, movable jaw, front and rear thrust toggle plates, flywheel, eccentric shaft and other components, as shown in the figure.

The compound swing jaw crusher drives the movable jaw to reciprocate through the rotation of the eccentric shaft, so that the gap between the movable jaw and the fixed jaw changes periodically, so that the material is subjected to impact, extrusion, grinding and cutting in the crushing chamber, and finally crushed. The compound swing jaw crusher has the characteristics of large crushing ratio, strong production capacity, low energy consumption, and convenient maintenance. It has been widely used at home and abroad.

3. Double-chamber jaw crusher

The compound swing double-chamber jaw crusher is to install the movable jaw plate on the left and right working surfaces of the movable jaw body, and form two independent crushing chambers with the left and right fixed jaws. With the rotation of the eccentric shaft installed under the crusher, the left and right crushing chambers alternately realize the material crushing task, and reciprocate. The structure of the double-chamber jaw crusher is shown in the figure:

The double-chamber jaw crusher has a unique structure. The crushing stroke and discharging stroke in each working cycle are decomposed into two crushing strokes and two discharging strokes, which increases the working efficiency by 1 times compared with the compound swing jaw crusher. However, the equipment has a complex structure, a large maintenance workload, and a low cost-effectiveness, so it is rarely used in China.

In addition, the jaw crusher has also developed some other models, such as screening jaw crusher, external movable jaw swing jaw crusher, etc. There are few application cases, so they are not introduced in detail here.