Abstract: A control system that sets a voltage of a DC bus connected with a secondary battery to an optimal value in accordance with a capacity of a power supply and characteristics of the secondary battery to stabilize a battery voltage of the secondary battery. The control system includes: drive units having a crusher that crushes an object to be crushed; inverters connected to the respective drive units and convert power; a converter that receives power from an AC power supply and converts the received power into DC power; a lithium-ion battery that charges the DC power according to a drive state of the drive units or supplies power to the drive units according to the drive state of the drive units; and a PLC that sets a conversion voltage of the converter based on a state of the lithium-ion battery and an output capacity of the AC power supply.

Abstract: A crusher bucket includes a bucket body (70) and a crushing lid (76) provided on the bucket body. The crushing lid is capable of being opened and closed relative to the bucket body. A material feed rate adjusting mechanism is provided on the bucket body (70) and/or the crushing lid (76) to allow raw material scooped up into the bucket body (70) to be fed into a crushing chamber (70a) in a predetermined amount at a time. Hammers (74) are disposed on the outer periphery of a rotor driven rotationally by a power drive device to strike and break the raw material fed into the crushing chamber (70a). A repulsion plate (77) is provided on the crushing lid (76) to collide with the raw material struck by the hammers (74). The material feed rate adjusting mechanism is preferably a weir (72) provided on the bottom wall of the bucket body (70).

Abstract: A crusher bucket includes a bucket body (70) and a crushing lid (76) provided on the bucket body. The crushing lid is capable of being opened and closed relative to the bucket body. A material feed rate adjusting mechanism is provided on the bucket body (70) and/or the crushing lid (76) to allow raw material scooped up into the bucket body (70) to be fed into a crushing chamber (70a) in a predetermined amount at a time. Hammers (74) are disposed on the outer periphery of a rotor driven rotationally by a power drive device to strike and break the raw material fed into the crushing chamber (70a). A repulsion plate (77) is provided on the crushing lid (76) to collide with the raw material struck by the hammers (74). The material feed rate adjusting mechanism is preferably a weir (72) provided on the bottom wall of the bucket body (70).

Abstract: A jaw crusher designed to break a non-rigid object, e.g., asphalt, into pieces of desired size without causing the object to be undesirably mashed by changing the motion of a movable tooth plate relative to a fixed tooth plate. The jaw crusher includes a fixed tooth plate (16), a swing jaw (8), a movable tooth plate (15), and a toggle plate (10). Motion of a lower end portion of the movable tooth plate (15) which is on an approximately circular locus satisfies the conditions that the relative angle between a straight line connecting the lower and upper end points of the approximately circular locus and the fixed tooth plate (16) is not smaller than 20.degree., and that the distance between the lower and upper end points is not shorter than 50 mm.

Abstract: A jaw crusher with a pass-through preventing device which prevents a flat plate-shaped object from passing through without being crushed. Also disclosed is a jaw crusher with a tooth plate structure which is capable of effectively crushing a non-rigid object, for example, a lump of asphalt, without causing such an object to stick to the area between a cheek plate and a fixed tooth plate or a movable tooth plate. The jaw crusher comprises a plurality of forks which are provided at the lower end of a crushing space to prevent a plate-shaped object from passing through the crushing space without being crushed, and a fork shaft which is provided with one end of each fork and which is rotatably provided on the crusher body. The movable tooth plate is provided with cutting projections. A plate-shaped object is first broken by the cutting projections and then crushed by intermediate projections.