Jaw crusher thrust plate (also known as toggle plate), in addition to transmitting power to make moving jaw plate before and after swinging, but also has a safety insurance role, change its length can also play a role in regulating the discharge port. When the jaw crusher crushing chamber into the non-broken objects (such as iron balls, iron, etc.), in order to protect the main components of equipment from damage and the use of rear thrust plate as crusher insurance components. After the thrust plate is generally cast iron as a whole, in the middle of a slot or a number of holes to reduce its cross-section strength; can also be cast into two pieces, and then screw (or rivets) to form a combined thrust plate. When the non-breakable material into the crushing chamber, the equipment overload, huge crushing force to the thrust plate led to thrust plate or combination of thrust plate screw cut, the machine stops working, play a role in insurance.
With the continuous wear of the tooth plate, the discharge port gradually becomes larger, the product is getting thicker, in order to obtain qualified product size, the need to regularly adjust the discharge port size. There are two ways to adjust the discharge port:
(1) gasket adjustment, that is, in the rear thrust plate behind the support frame and put a group of spacers between the rear wall of the rack, increase or decrease the number of pads or change its thickness, can achieve the purpose of regulating the discharge port. This method is compact, reliable regulation, large and medium-sized jaw crusher with this adjustment method.
(2) wedge adjustment, is placed on the thrust plate with the rear seat between the two wedge adjustment, suitable for small crusher used.
