Abstract: An apparatus for relaying wireless communications between a first apparatus and a second apparatus includes: a transmitter to amplify power of a first signal and transmit of the first signal to the first apparatus; a receiver to receive a mixed signal including a second signal from the second apparatus and the first signal transmitted from the transmitter; and a processor to perform a process for canceling the first signal out of the mixed signal, the process including generating a first cancellation signal having a phase changed from a phase of the first signal to be transmitted, generating a composite signal by combining the first cancellation signal with the mixed signal, extracting a difference between the composite signal and the first signal to be transmitted, generating a second cancellation signal based on the extracted difference, and generating a cancelled signal produced by combining the second cancellation signal with the composite signal.

Abstract: A crushing control apparatus for a shearing crusher, which properly controls the crusher in accordance with kinds of objects to be crushed and is capable of reliably preventing stop of operation due to excessive load, clogging and the like, is provided. For this purpose, the crushing control apparatus includes a mode selecting switch (59) for selecting a mode according to each kind of the objects to be crushed, a ROM (33a) for storing a control condition of the rotary shafts (11, 11), which conforms to the mode for each of the mode, and a controller (33), which reads out the control condition corresponding to a selected mode from the ROM, when the predetermined mode is selected by the mode selecting switch, and controls the rotary shafts to be in the control condition which is read out.

Abstract: A crushing control apparatus for a shearing crusher, which properly controls the crusher in accordance with kinds of objects to be crushed and is capable of reliably preventing stop of operation due to excessive load, clogging and the like, is provided. For this purpose, the crushing control apparatus includes a mode selecting switch (59) for selecting a mode according to each kind of the objects to be crushed, a ROM (33a) for storing a control condition of the rotary shafts (11, 11), which conforms to the mode for each of the mode, and a controller (33), which reads out the control condition corresponding to a selected mode from the ROM, when the predetermined mode is selected by the mode selecting switch, and controls the rotary shafts to be in the control condition which is read out.

Abstract: A load display device for a crusher, which is capable of efficiently performing crushing work by making an operator recognize a load condition, is provided. For this purpose, the load display device for the crusher, which displays the load condition at a crushing section in the crusher, includes a monitor (30) provided at a location which the operator is able to recognize visually, and a screen (31) which is provided on the monitor (30) and graphically displays a condition of a load at a crushing section (4A).