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Jaw crushers are widely used in mining, construction, metallurgy, and other industries to crush a variety of materials, including hard rock, ore, gravel, and limestone. In the double toggle jaw crushers, the oscillating motion of the swing jaw is caused by the vertical motion of the pitman. The pitman moves up and down, causing the toggle plates to move as well, enabling the swing jaw to oscillate and provide a double toggle crushing action.
The structure of the double toggle jaw crusher is characterized by a swing jaw suspended from an eccentric shaft that is situated at the top of the crusher. The motion is provided by an eccentric on the main shaft, which is positioned at the top of the crusher.
One part of the toggle plate is positioned closer to the bottom of the swing jaw, while the other part is positioned closer to the top. This geometry allows the swing jaw to have a larger feed opening than ordinary single toggle jaw crushers, giving it an increased capacity and reduction ratio.
The double toggle jaw crusher has two forms of working direction: one is a swing motion toward the fixed die plate, and the other is a vertical motion because of the rotation of the eccentric shaft. Through adjusting the position of the toggle plate, the swing motion is utilized to enable the breakage between the materials to take place quickly and efficiently.
1. Swing Jaw Assembly: Comprised of a pitman, a jaw stock, a fixed jaw die, and a movable jaw die. The swing jaw assembly is further connected to the toggle plate and acts as a pivot point for the jaw.
2. Toggle Plate: Positioned above the swing jaw assembly, it is responsible for the oscillating action of the movable jaw, therefore breaking the material against the fixed jaw.
3. Eccentric Shaft: Positioned on the top of the crusher, the eccentric shaft is responsible for transmitting the driving force through the triangular belt to the pitman and moving the swing jaw in a circular motion.
1. Increased Production Capacity and Efficiency: The double toggle jaw crusher is designed for a high production rate and possesses a larger crushing stroke compared to single toggle jaw crushers. Hence, it generates fewer fines, hence saving costs in fine crushing.
2. Wear and Tear of Jaw Plates: The double toggle jaw crusher has a swing motion that results in longer jaw plate life. This reduces the need for frequent replacement of wear parts, offering a more cost-effective solution.
3. Compact Design: The double toggle jaw crusher can be easily installed and takes up minimal space, making it an ideal choice for limited space environments such as underground mining.
4. Versatility in Crushing Applications: The double toggle jaw crusher excels at handling a wide range of materials, from hard and abrasive rocks to softer materials like limestone and gravel. This versatility allows it to be used in various industries like mining, construction, and demolition.
The double toggle jaw crusher structure provides an amplified amount of strength, ease-of-use, and reliability, making it an ideal choice for mining and quarrying applications. Its compact design and ability to withstand high capacities and abrasive materials make it a valuable machine in the crushing and screening industry.
By employing the double toggle mechanism, this type of jaw crusher offers improved performance, lesser wear and tear, and increased durability compared to traditional single toggle jaw crushers. Whether it's for large-scale operations or smaller-scale construction projects, the double toggle jaw crusher is an efficient and versatile option.
