Radiation therapy system, and operation procedure of positioning device thereof

A radiation therapy system comprising:

• a radiation generation device configured to generate therapeutic radiation;
• an irradiation chamber configured to accommodate a to-be-irradiated object subjecting to irradiation of the radiation;
• a management chamber configured to perform irradiation control;
• and
• a support device configured to transport and support the to-be-irradiated object, wherein the support device comprises:
• a support member configured to support the to-be-irradiated object, wherein the support member comprises a first surface;
• an adjustment component configured to adjust a spatial position of the support member;
• and
• a clamping component configured to fixedly connect the support member and the adjustment component together in a detachable manner, wherein the clamping component comprises:
• a first positioning block disposed on the first surface of the support member,
• a second positioning block disposed on the adjustment component, and
• a locking member configured to lock or release the second positioning block relative to the first positioning block,
• wherein the first positioning block is provided with a limiting slot for the second positioning block to be inserted along a first direction parallel to the first surface, a reserved slot communicated with the limiting slot along a second direction perpendicular to the first surface such that the adjustment component passes through the reserved slot, and a locking hole located at a side of the limiting slot and communicated with the limiting slot, the locking hole is configured to be matched with the locking member along a locking direction perpendicular to the first direction and the second direction, the limiting slot penetrates through one of faces of the first positioning block along the first direction to form an insertion opening, and the second positioning block is inserted into the limiting slot from the insertion opening along the first direction.