Abstract: A jaw crusher includes a machine with a moving base, a fixed base, a crush travel adjusting mechanism for pivotally coupling the top of a crush travel adjusting base to the machine by an eccentric sleeve, and an automatic crush gap adjusting mechanism. A toggle plate is installed between the crush travel adjusting base and the moving base. A pull rod of the moving base having a compression spring tightly presses front and rear ends of the toggle plate. The automatic crush gap adjusting mechanism fixes a steel slot of a stop plate and a pair of triangular wedge-shaped lumps to the position adjusting base of the machine, and the stop plate is installed between the steel slot and the crush travel adjusting base, and a pull rod of the adjusting base having a compression spring tightly presses both front and rear ends of the stop plate.

Abstract: A conical crushing board and spindle mounting arrangement, which includes a cone fixedly mounted on a spindle, a conical crushing board mounted on the cone, the conical crushing board having a series of sloping teeth at a top side thereof, a conical locating member mounted on the conical crushing board around the spindle, the conical locating member being formed of four arched blocks abutted against one another and having a series of sloping teeth at a bottom side thereof respectively meshed with the sloping teeth at the conical crushing board, a lock nut fastened to the spindle to hold down the conical locating member and the conical crushing board, and a plurality of keys respectively inserted into respective radial locating grooves at the lock nut and engaged into respective locating notches at the conical locating member.

Abstract: A conical crushing board and spindle mounting arrangement, which includes a cone fixedly mounted on a spindle, a conical crushing board mounted on the cone, the conical crushing board having a series of sloping teeth at a top side thereof, a conical locating member mounted on the conical crushing board around the spindle, the conical locating member being formed of four arched blocks abutted against one another and having a series of sloping teeth at a bottom side thereof respectively meshed with the sloping teeth at the conical crushing board, a lock nut fastened to the spindle to hold down the conical locating member and the conical crushing board, and a plurality of keys respectively inserted into respective radial locating grooves at the lock nut and engaged into respective locating notches at the conical locating member.

Abstract: A bearing block mounting arrangement of a cone crusher in which the bearing block includes an upper block and a bottom block respectively covered on top and bottom sides of a spider bearing around a main shaft, the upper block and the bottom block each having an outward flange and a plurality of locating holes and screw holes alternatively arranged around the spider bearing, the locating holes on the outward flange of the upper block being respectively connected to the locating holes on the outward flange of the bottom block and respective locating holes on a locating block inside the cone crusher by screw bolts and nuts, and a plurality of adjustment screws respectively threaded into the screw holes on the upper block and the bottom block and stopped at top and bottom sides of the locating block for adjusting the gap between the upper block and the bottom block.

Abstract: An improved positioning device for concaves of cone crushers including a supporting surface formed above a tapered inclined surface of a top cell and projecting inwardly, the supporting surface having slots symmetrically provided thereon for receiving and positioning lower positioning elements, and an annular flange disposed on the supporting surface. Opposite to the upper contact face of the supporting surface, the annular flange is provided with symmetrically distributed projections. Each projection is provided with a groove at a bottom edge thereof for receiving an upper positioning element mounted in place by a sunk-head bolt. A lower end face of the upper positioning element is configured to have a tapered surface that matches the respective one of the lower positioning elements. Furthermore, upper surfaces of the projections are provided with symmetrical key slots that are equivalent to the projections in number for mounting of stop blocks using sunk-head bolts.

Abstract: The present invention relates to an improved positioning device for the concave of a cone crusher. The concave is provided with a plurality of tabs which are symmetrically disposed and each of the tabs is provided with a inclined surface which directs to same direction. The top cell or bottom cell is provided with a plurality of positioning device which is corresponding to each of the tabs. The positioning device is provided with a complimentary inclined and tapped surface corresponding to the inclined surface of the concave. As a result, the concave can be fixedly supported over the positioning devices. The concave can be quickly assembled while features a firm and durable engagement therebetween for life long service.