Abstract: The invention discloses a grating device for radiotherapy equipment. A tail-end position controller and a front-end position controller are simultaneously arranged, and can simultaneously verify a tail-end position and a middle position of each single grating blade and measure the time during which one grating blade arrives at the middle position from the tail-end position and/or the total number of revolutions of a motor at any time.

Abstract: The invention discloses a base for a novel accelerator therapy device. A boat-shaped rocker arm is creatively utilized to drive a main frame to rotate around an X axis, and meanwhile an accelerator simultaneously follows the main frame to rotate around a Z axis, so that the accelerator runs on a spherical surface and irradiates an isocentric lesion in any direction of a three-dimensional spherical space; the center of gravity of the boat-shaped rocker arm is low, the boat-shaped rocker arm bears weight on the curved surface, and a rotating shaft and an upright post for bearing the weight of the main frame and the weight of the accelerator in the prior art are removed, so that the base is high in stability, safe, reliable and low in requirement for transmission equipment and easily realizes industrialized application.

Abstract: The present invention discloses a homologous dual-energy accelerator and a therapy device comprising the homologous accelerator. The homologous dual-energy accelerator comprises an electron emitting device and an accelerating device, wherein the electron emitting device is located at the input end of the accelerating device, and electrons generated by the electron emitting device are emitted from the output end of the accelerating device after being accelerated by the accelerating device; the homologous dual-energy accelerator further comprises at least one separation deflection device which is arranged on the output end side of the accelerating device and used for changing the motion trail of partial electrons among the electrons accelerated by the accelerating device.

Abstract: The invention discloses a radiation field control device and radiotherapy equipment. Two or more different-sized light limiting barrels are directly machined on a light limiting barrel support, or two or more light limiting barrel mounting portions are arranged on the light limiting barrel support, then the two or more light limiting barrels are respectively mounted in the light limiting barrel mounting portions in a one-to-one correspondence manner, any one of the light limiting barrels can move to a working position through a light limiting barrel switching device, in this case, when the light limiting barrel having suitable size is required, the unsuitable light limiting barrel does not need to be detached, and the required light limiting barrel can be used conveniently and quickly by directly controlling the light limiting barrel switching device.