CN-224220602-U - Supporting device for rotating cylinder of particle therapeutic apparatus

CN224220602UCN 224220602 UCN224220602 UCN 224220602UCN-224220602-U

Abstract

The utility model relates to the technical field of auxiliary devices of particle therapeutic apparatuses, and discloses a supporting device for a rotating cylinder of a particle therapeutic apparatus, wherein two cylinder necks at two ends of the rotating cylinder are respectively provided with a rotating track; the support device is provided with two groups of support frames which are arranged at intervals and correspond to the rotating tracks at two ends of the rotating cylinder, each group of support frames is provided with a bearing frame body, bearing bushes and hydraulic mechanisms which are arranged on the bearing frame body, the bearing frame body supports the rotating cylinder at the corresponding rotating track of the rotating cylinder through the bearing bushes, the bearing surface of the bearing bushes is provided with a static pressure oil cavity, a plurality of oil inlet holes which are communicated with the hydraulic mechanisms are arranged in the static pressure oil cavity, and the support frames form suspension support for the rotating cylinder through the hydraulic mechanisms. The utility model can realize suspension support of the rotary drum, effectively reduce friction between the rotary drum and the support frame during operation, effectively reduce deformation of the rotary drum and the support frame, be favorable for ensuring rotation precision and stability during operation of the rotary drum, and be favorable for reducing abrasion and maintenance cost of equipment.

Inventors

XU FEI
CAO JIE
DING JIMING
LI DEPING
HUANG BO
LIU ZHICHENG
LEI XIAOLONG

Assignees

东方电气集团东方汽轮机有限公司

Dates

Publication Date: 20260512
Application Date: 20250310

Claims (10)

1. The support device for the rotating cylinder of the particle therapeutic apparatus is characterized in that the two cylinder necks at two ends of the rotating cylinder (1) are respectively provided with a rotating track; The support device is provided with two groups of support frames (3) which are distributed at intervals and correspond to the rotating tracks at the two ends of the rotating cylinder (1); the method is characterized in that: Each group of supporting frames (3) is provided with a bearing frame body (31), bearing bushes (32) and a hydraulic mechanism (33) which are arranged on the bearing frame body (31), and the bearing frame body (31) supports the rotary cylinder (1) at the corresponding rotary track of the rotary cylinder (1) through the bearing bushes (32); the bearing surface of the bearing bush (32) is provided with a static pressure oil cavity (4), and a plurality of oil inlet holes (6) communicated with the hydraulic mechanism (33) are arranged in the static pressure oil cavity (4); the supporting frame (3) forms a suspension support for the rotary cylinder (1) through the hydraulic mechanism (33).
2. The support device for a rotating cylinder of a particle therapy system according to claim 1, wherein: An oil return groove (5) distributed on the periphery of the static pressure oil cavity (4) is formed in the bearing surface of the bearing bush (32) of the support frame (3); The oil return groove (5) is provided with a plurality of oil return holes (7) communicated with the hydraulic mechanism (33).
3. The support device for a rotating cylinder of a particle therapy system according to claim 1 or 2, wherein: The two axial sides of the bearing bush (32) of the support frame (3) are provided with limit baffles (8) forming a rotary chute; correspondingly, the rotating track of the rotating cylinder (1) is a sliding guide rail (2) with a radial convex structure, and the periphery of the sliding guide rail (2) is provided with a bearing part which is folded outwards axially; The sliding guide rail (2) of the rotary cylinder (1) is arranged in the rotary chute corresponding to the support frame (3) in a penetrating mode, limiting baffles (8) on the support frame (3) are used for limiting the sliding guide rail (2) axially at two sides and radially, and the sliding guide rail (2) is matched with a bearing bush (32) in the rotary chute through the bearing part.
4. A support device for a rotating drum of a particle therapy system according to claim 3, wherein: And a flexible sealing structure is arranged at the opening of the rotary chute between the limit baffle (8) on the support frame (3) and the corresponding sliding guide rail (2) of the rotary cylinder (1).
5. The support device for a rotating cylinder of a particle therapy system according to claim 4, wherein: the flexible sealing structures of the sliding guide rails (2) at the two ends of the rotary cylinder (1) and the corresponding supporting frames (3) are differentiated; The flexible sealing structure of the sliding guide rail (2) at one end of the rotary cylinder (1) and the corresponding supporting frame (3) is filled in a clearance matched with the sliding guide rail (2) and the corresponding limiting baffle (8), and the matching clearance between the sliding guide rail (2) and the corresponding limiting baffle (8) is filled; The flexible sealing structure of the sliding guide rail (2) at the other end of the rotary cylinder (1) and the corresponding supporting frame (3) is arranged outside a clearance matched with the sliding guide rail (2) and the corresponding limiting baffle (8), the matching clearance between the sliding guide rail (2) and the corresponding limiting baffle (8) is blocked, and an axial movable clearance is formed between the sliding guide rail (2) and the corresponding limiting baffle (8).
6. The support device for a rotating cylinder of a particle therapy system according to claim 5, wherein: The limiting baffle (8) on the supporting frame (3) is provided with a radial baffle which is folded inwards in the axial direction, and the section of the limiting baffle (8) is of an L-shaped structure; Correspondingly, the section of the sliding guide rail (2) of the rotary cylinder (1) is of a T-shaped structure.
7. The support device for a rotating cylinder of a particle therapy system according to claim 6, wherein: An auxiliary bearing bush (9) is arranged on the inner side of the radial baffle of the limit baffle (8); the suspended and supported rotary cylinder (1), the sliding guide rail (2) is in sliding fit with the auxiliary bearing bush (9) of the limit baffle (8).
8. A support device for a rotating drum of a particle therapy system according to claim 3, wherein: The limit baffle (8) on the support frame (3) is of a carbon structural steel structure; The limiting baffle (8) is provided with a wear-resistant coating or a wear-resistant zinc aluminum alloy plate in a region which is used for contacting the corresponding sliding guide rail (2).
9. The support device for a rotating cylinder of a particle therapy system according to claim 1, wherein: The static pressure oil cavities (4) on the bearing surface of the bearing bush (32) are a plurality of distributed at intervals.
10. The support device for a rotating cylinder of a particle therapy system according to claim 1, wherein: The suspended rotary cylinder (1) is suspended and supported, and the suspension height on the corresponding support frame (3) is 0.01-0.05 mm.

Description

Supporting device for rotating cylinder of particle therapeutic apparatus Technical Field The utility model relates to the technical field of auxiliary devices of particle therapeutic apparatuses, in particular to a supporting device for a rotating cylinder of a particle therapeutic apparatus. Background The particle therapeutic apparatus includes proton therapeutic apparatus and heavy ion therapeutic apparatus, and is a device for performing radiotherapy on tumor by using accelerated particles in biomedicine, and mainly includes accelerator, rotary drum, therapeutic head, therapeutic bed, etc. The accelerated particles act on the tumor part of the patient lying on the treatment bed through the treatment head, the treatment head can emit laser to position the part of the patient to be treated, and the rotary cylinder drives the treatment head to move through rotation, so that the particle beams emitted by the treatment head can irradiate the tumor of the patient from different directions. It can be seen that the rotating drum is a critical component of the particle therapy apparatus. The rotating cylinder is usually of a truss structure or a welded steel structure, the weight range of the rotating cylinder is 100-200 tons, the weight of the existing rotating cylinder with the heaviest weight is about 650 tons, and the rotating cylinder belongs to oversized steel structure rotating machinery. The rotary cylinder needs to meet the technical requirements of high precision and high stability during rotation. For example, in the rotating process of the rotating cylinder, the central point position change is less than 1mm, the rotation angle precision is less than 0.2 degree, the rotating speed is 1-1.5r/min, the maximum rotating diameter is 7-12 m, and the rotating minimum angle precision is less than or equal to 0.1 degree under different angles. In order to meet the above technical requirements, it is common in the industry to equip the rotating drum with a support structure serving as a support for the rotating drum. The conventional support structure is a conventional double row cylindrical roller bearing or roller-slide bearing structure. However, due to the fact that the weight of the rotary cylinder is large, and as the bearing weight increases, the friction force between the supporting structure and the contact surface of the type can become large, so that the rotation resistance is increased, the rotation stability is poor, meanwhile, the braking inertia is large, the rotation precision is affected, and the precision requirement of equipment cannot be met. Disclosure of utility model The utility model aims to provide a supporting device for a rotating drum of a particle therapeutic apparatus, which is beneficial to ensuring the rotating precision and the stability of the rotating drum during operation. The technical scheme adopted by the utility model is as follows: A supporting device for a rotary drum of a particle therapeutic apparatus, wherein two drum necks of the rotary drum are respectively provided with a rotary track; The support device is provided with two groups of support frames which are distributed at intervals corresponding to the rotating tracks at two ends of the rotating cylinder; Each group of support frames is provided with a bearing frame body, bearing bushes and a hydraulic mechanism, wherein the bearing bushes are arranged on the bearing frame body, and the bearing frame body supports the rotary drum at the corresponding rotary track of the rotary drum through the bearing bushes; The bearing surface of the bearing bush is provided with a static pressure oil cavity, and a plurality of oil inlet holes communicated with the hydraulic mechanism are arranged in the static pressure oil cavity; the support frame supports the rotary cylinder in a suspension manner through the hydraulic mechanism. According to the technical measure, the rotating rails are arranged at the two ends of the rotating cylinder, the two groups of supporting frames are correspondingly arranged, the hydraulic mechanism is used for supplying oil to the static pressure oil cavity of the bearing bush, so that the suspension supporting of the rotating cylinder is realized, the friction between the rotating cylinder and the supporting frames during operation is effectively reduced, the deformation of the rotating cylinder and the supporting frames can be effectively reduced, the rotating precision and the stability during operation of the rotating cylinder are guaranteed, and the abrasion and the maintenance cost of equipment are reduced. Further, an oil return groove distributed on the periphery of the static pressure oil cavity is formed in the bearing surface of the bearing bush of the support frame; and a plurality of oil return holes communicated with the hydraulic mechanism are distributed at the oil return groove. According to the technical measure, the oil return groove and the oil return hole are formed in the