Supporting device for rotating cylinder of particle therapeutic apparatus

Abstract

The utility model relates to the technical field of particle therapeutic apparatus auxiliary devices, and discloses a supporting device for a particle therapeutic apparatus rotating cylinder, and cylinder necks at two ends of the rotating cylinder are respectively provided with a rotating track; corresponding to the rotating tracks at the two ends of the rotating cylinder, the supporting device is provided with two groups of supporting frames which are arranged at intervals; each supporting frame is provided with a bearing frame body, a bearing bush and a hydraulic mechanism, wherein the bearing bush and the hydraulic mechanism 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 bush. A static pressure oil cavity is formed in the bearing surface of the bearing bush, and a plurality of oil inlet holes communicated with the hydraulic mechanism are distributed in the static pressure oil cavity; the supporting frame supports the rotating cylinder in a suspension mode through a hydraulic mechanism. According to the utility model, the suspension support of the rotating cylinder can be realized, the friction between the rotating cylinder and the support frame during the operation is effectively reduced, the deformation of the rotating cylinder and the support frame can be effectively reduced, the rotating precision and stability during the operation of the rotating cylinder are ensured, and the abrasion and maintenance cost of equipment are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for particle therapy instruments, specifically, to a support device for the rotating cylinder of a particle therapy instrument. Background Technology

[0002] Particle therapy devices, including proton therapy devices and heavy ion therapy devices, are biomedical instruments that use accelerated particles to perform radiotherapy on tumors. They mainly consist of components such as an accelerator, a rotating cylinder, a treatment head, and a treatment bed. The accelerated particles are delivered to the tumor site of the patient lying on the treatment bed through the treatment head. The treatment head emits a laser to pinpoint the area to be treated. The rotating cylinder rotates, driving the treatment head to move and allowing the particle beam emitted by the treatment head to irradiate the tumor from different directions. Therefore, the rotating cylinder is a key component of the particle therapy device.

[0003] Rotary cylinders are typically truss or welded steel structures, with a weight range of 100 to 200 tons. The heaviest existing rotary cylinder weighs around 650 tons, classifying it as an ultra-large steel structure rotating machine.

[0004] The rotating cylinder needs to meet high precision and high stability technical requirements during rotation. For example, during the rotation process, the change in the center point position at different angles should be <1mm, the rotation angle accuracy should be <0.2 degrees, the rotation speed should be 1-1.5r / min, the maximum rotation diameter should be 7-12 meters, and the minimum rotation angle accuracy should be ≤0.1 degrees.

[0005] To meet the above technical requirements, the industry typically assembles a support structure to support the rotating cylinder. Traditional support structures are ordinary double-row cylindrical roller bearings or roller-sliding bearing structures. However, due to the large weight of the rotating cylinder, and with the increase in load, the friction between this type of support structure and the contact surface increases, leading to increased rotational resistance, poor rotational stability, and large braking inertia, affecting rotational accuracy and failing to meet the equipment's precision requirements. Utility Model Content

[0006] The technical objective of this invention is to address the shortcomings of the prior art by providing a support device for the rotating cylinder of a particle therapy instrument that helps ensure the rotational accuracy and stability of the rotating cylinder during operation.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A support device for a rotating cylinder of a particle therapy device, wherein the rotating cylinder has rotating tracks at both ends of the neck;

[0009] Corresponding to the rotating tracks at both ends of the rotating cylinder, the support device has two sets of support frames arranged at intervals;

[0010] Each set of support frames has a load-bearing frame body and bearing bushes and hydraulic mechanism arranged on the load-bearing frame body. The load-bearing frame body supports the rotating cylinder at the corresponding rotation track of the rotating cylinder through the bearing bushes.

[0011] The bearing surface of the bearing bush has a hydrostatic oil cavity, and multiple oil inlet holes connected to the hydraulic mechanism are arranged in the hydrostatic oil cavity;

[0012] The support frame provides levitation support to the rotating cylinder via the hydraulic mechanism.

[0013] The above-mentioned technical measures, by setting rotating tracks at both ends of the rotating cylinder and correspondingly setting two sets of support frames, and using a hydraulic mechanism to supply oil to the hydrostatic oil chamber of the bearing, achieve the suspension support of the rotating cylinder, effectively reducing the friction between the rotating cylinder and the support frame during operation, and at the same time effectively reducing the deformation of the rotating cylinder and the support frame, which is conducive to ensuring the rotational accuracy and stability of the rotating cylinder during operation, and also helps to reduce the wear and maintenance costs of the equipment.

[0014] Furthermore, the bearing surface of the support frame has oil return grooves distributed around the periphery of the hydrostatic oil chamber;

[0015] The oil return groove has multiple oil return holes that connect to the hydraulic mechanism.

[0016] The above-mentioned technical measures, by setting oil return grooves and oil return holes on the bearing bearing surface, can timely recover hydraulic oil to the hydraulic mechanism, realize the recycling of hydraulic oil, and at the same time help to prevent hydraulic oil from accumulating on the bearing surface.

[0017] Furthermore, the bearing bush of the support frame has limiting baffles forming rotating grooves on both axial sides;

[0018] Correspondingly, the rotating track of the rotating cylinder is a sliding guide rail with a radially convex structure, and the outer periphery of the sliding guide rail has an axially outwardly folded bearing portion;

[0019] The sliding guide rail of the rotating cylinder is installed in the rotating groove of the corresponding support frame, and is limited by the limiting baffle on the support frame on both sides of the sliding guide rail in the axial direction and in the radial direction. The sliding guide rail cooperates with the bearing bush in the rotating groove through the bearing part.

[0020] The above-mentioned technical measures, by setting limiting baffles that form a rotating chute, limit the sliding guide rail of the rotating cylinder on both sides and in the radial direction, preventing the rotating cylinder from undergoing accidental axial and radial displacement during rotation, which helps to improve the rotational accuracy and stability of the rotating cylinder during operation.

[0021] Furthermore, a flexible sealing structure is provided at the opening of the rotating groove between the limiting baffle on the support frame and the corresponding sliding guide rail of the rotating cylinder.

[0022] The above-mentioned technical measures, by setting a flexible sealing structure at the opening of the rotary chute, can effectively prevent dust, impurities and other contaminants from entering the rotary chute, which helps to avoid affecting the operation of the rotary drum, and at the same time helps to prevent the hydraulic oil from being contaminated.

[0023] Furthermore, the flexible sealing structures of the sliding guide rails at both ends of the rotating cylinder and the corresponding support frame are different;

[0024] The flexible sealing structure of the sliding guide rail at one end of the rotating cylinder and the corresponding support frame is filled in the gap between the sliding guide rail and the corresponding limiting baffle, and the gap between the sliding guide rail and the corresponding limiting baffle is filled.

[0025] The flexible sealing structure of the sliding guide rail and the corresponding support frame at the other end of the rotating cylinder is arranged outside the gap between the sliding guide rail and the corresponding limiting baffle, sealing the gap between the sliding guide rail and the corresponding limiting baffle, and there is an axial movement gap between the sliding guide rail and the corresponding limiting baffle.

[0026] The above-mentioned technical measures, through differentiated flexible sealing structures at both ends, one end adopts a filling fit gap method and the other end adopts a sealing fit gap method, and the sliding guide rail and the corresponding limit baffle bracket have an axial movement gap. While meeting the sealing performance, it can better adapt to the rotation requirements of the rotating cylinder under different working conditions. By setting the axial movement gap, it can adapt to changes such as thermal expansion of the rotating cylinder.

[0027] Furthermore, the limiting baffle on the support frame has an axially inwardly folded radial baffle, and the cross-section of the limiting baffle has an L-shaped structure;

[0028] Correspondingly, the sliding guide rail of the rotating cylinder has a T-shaped cross-section.

[0029] The above-mentioned technical measures, through the combination of a limiting baffle with an L-shaped cross-section and a sliding guide rail with a T-shaped cross-section, can more accurately limit the axial and radial displacement of the rotating cylinder, which is beneficial to improving the rotational accuracy and stability of the rotating cylinder during operation.

[0030] Furthermore, the inner side of the radial baffle of the limiting baffle has an auxiliary bearing;

[0031] The rotating cylinder, which is suspended and supported, has its sliding guide rail slidingly engaged with the auxiliary bearing of the limiting baffle.

[0032] The above-mentioned technical measures, by setting an auxiliary bearing on the inner side of the radial baffle of the limiting baffle, allow the sliding guide rail of the suspended and supported rotating cylinder to slide in cooperation with the auxiliary bearing. This helps to avoid the sliding guide rail directly contacting the limiting baffle and effectively reduces damage caused by hard contact, thereby effectively improving the rotational accuracy and stability of the rotating cylinder during operation.

[0033] Furthermore, the limiting baffle on the support frame is a carbon steel structure;

[0034] The area of ​​the limiting baffle used to contact the corresponding sliding guide rail has a wear-resistant coating or a wear-resistant zinc-aluminum alloy plate.

[0035] In the above-mentioned technical measures, the limiting baffle is made of carbon steel and has a wear-resistant coating or wear-resistant zinc-aluminum alloy plate in the area that contacts the sliding guide rail. This can effectively improve the structural strength and wear resistance of the limiting baffle, effectively reduce wear, and extend its service life.

[0036] Furthermore, the hydrostatic oil cavities on the bearing surface of the bearing bush are multiple and spaced apart.

[0037] In the above-mentioned technical measures, the hydrostatic oil chambers are multiple and spaced apart, which can disperse the bearing pressure and achieve stable suspension support for the rotating cylinder.

[0038] Furthermore, the levitation height of the rotating cylinder supported by suspension on the corresponding support frame is 0.01 to 0.05 mm.

[0039] The above-mentioned technical measures, by controlling the suspension height of the rotating cylinder, can ensure the stable suspension of the rotating cylinder while minimizing the gap between the rotating cylinder and the bearing, which is beneficial to improving safety and the stability and rotation accuracy of the rotating cylinder during operation.

[0040] One or more technical solutions provided by this utility model have at least the following technical effects or advantages:

[0041] This invention provides levitation support for the rotating cylinder by setting rotating tracks at both ends of the rotating cylinder and correspondingly setting two sets of support frames. The hydraulic mechanism supplies oil to the static pressure oil chamber of the bearing, which effectively reduces the friction between the rotating cylinder and the support frame during operation. It also effectively reduces the deformation of the rotating cylinder and the support frame, which helps to ensure the rotational accuracy and stability of the rotating cylinder during operation, and helps to reduce the wear and maintenance costs of the equipment. Attached Figure Description

[0042] The accompanying drawings, which are provided to further illustrate the embodiments of the present invention and constitute a part of the present invention, do not constitute a limitation thereof.

[0043] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0044] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0045] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0046] Figure 4 yes Figure 1 Side view;

[0047] Figure 5 This is a cross-sectional view of the support frame in this utility model;

[0048] Among them, 1-rotating cylinder; 2-sliding guide rail; 3-support frame; 31-bearing frame; 32-bearing shell; 33-hydraulic mechanism; 4-static pressure oil chamber; 5-oil return groove; 6-oil inlet hole; 7-oil return hole; 8-limiting baffle; 9-auxiliary bearing shell. Detailed Implementation

[0049] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of this utility model and the features within them can be combined with each other.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0051] Example 1

[0052] Reference Figures 1-5 This embodiment provides a support device for a rotating cylinder of a particle therapy device, wherein the two ends of the rotating cylinder 1 have rotating tracks respectively.

[0053] Corresponding to the rotating tracks at both ends of the rotating cylinder 1, the support device has two sets of support frames 3 arranged at intervals;

[0054] Each set of support frames 3 has a support frame 31 and bearing bushes 32 arranged on the support frame 31 and a hydraulic mechanism 33. The support frame 31 supports the rotating cylinder 1 at the corresponding rotating track of the rotating cylinder 1 through the bearing bushes 32.

[0055] Each set of support frames 3 may have one or more load-bearing frames 31. The specific number of load-bearing frames 31 depends on the actual needs, and this embodiment does not make a specific limitation.

[0056] The supporting frame 31 is a Q345 carbon structural steel structure that has undergone heat treatment. Heat treatment refers to conventional heat treatment processes.

[0057] The bearing surface of the bearing bush 32 has a hydrostatic oil cavity 4, which is a plurality of hydrostatic oil cavities 4 distributed at intervals on the bearing surface of the bearing bush 32.

[0058] The specific number of hydrostatic oil chambers 4 depends on actual needs, and this embodiment does not impose a specific limit.

[0059] Multiple oil inlet holes 6 connected to the hydraulic mechanism 33 are arranged inside the hydrostatic oil chamber 4;

[0060] The specific number of oil inlet holes 6 depends on actual needs, and this embodiment does not impose a specific limit.

[0061] The support frame 3 provides a suspended support for the rotating cylinder 1 via a hydraulic mechanism 33. The suspended height of the rotating cylinder 1 on the corresponding support frame 3 is 0.01 mm.

[0062] On the bearing surface of the bearing shell 32 of the support frame 3, there are oil return grooves 5 distributed on the outer periphery of the hydrostatic oil chamber 4;

[0063] The oil return groove has multiple oil return holes 7 connected to the hydraulic mechanism 33 arranged at 5 locations.

[0064] The specific number of oil return holes 7 depends on actual needs, and this embodiment does not impose a specific limit.

[0065] On both sides of the bearing shell 32 of the support frame 3, there are limiting baffles 8 forming a rotating groove;

[0066] Among them, the bearing bush 32 of the support frame 3 has several limiting baffles 8 forming a rotating groove on both sides of the axis. The specific number of limiting baffles 8 depends on the actual needs, and this embodiment does not make a specific limitation.

[0067] Correspondingly, the rotating track of the rotating cylinder 1 is a radially convex sliding guide rail 2, and the outer periphery of the sliding guide rail 2 has an axially outwardly folded bearing portion;

[0068] The sliding guide rail 2 of the rotating cylinder 1 is installed in the rotating groove of the corresponding support frame 3, and is limited by the limiting baffle 8 on the support frame 3 on both sides of the axial direction and the radial direction. The sliding guide rail 2 cooperates with the bearing bush 32 in the rotating groove through the bearing part.

[0069] The limiting baffle 8 on the support frame 3 and the corresponding sliding guide rail 2 of the rotating cylinder 1 are provided with a flexible sealing structure at the opening of the rotating groove.

[0070] The flexible sealing structures of the sliding guide rails 2 at both ends of the rotating cylinder 1 and the corresponding support frame 3 are different;

[0071] The flexible sealing structure of the sliding guide rail 2 at one end of the rotating cylinder 1 and the corresponding support frame 3 is filled in the gap between the sliding guide rail 2 and the corresponding limiting baffle 8, thus filling the gap between the sliding guide rail 2 and the corresponding limiting baffle 8.

[0072] The flexible sealing structure of the sliding guide rail 2 and the corresponding support frame 3 at the other end of the rotating cylinder 1 is arranged outside the gap between the sliding guide rail 2 and the corresponding limiting baffle 8, sealing the gap between the sliding guide rail 2 and the corresponding limiting baffle 8, and there is an axial movement gap between the sliding guide rail 2 and the corresponding limiting baffle 8.

[0073] The limiting baffle 8 on the support frame 3 has an axially inwardly folded radial baffle, and the cross-section of the limiting baffle 8 has an L-shaped structure;

[0074] Correspondingly, the cross-section of the sliding guide rail 2 of the rotating cylinder 1 is a T-shaped structure.

[0075] The inner side of the radial baffle of the limiting baffle 8 has an auxiliary bearing 9;

[0076] The rotating cylinder 1, which is suspended and supported, has a sliding guide rail 2 that is in sliding engagement with the auxiliary bearing 9 of the limiting baffle 8.

[0077] The limiting baffle 8 on the support frame 3 is a carbon steel structure;

[0078] Among them, the limiting baffle 8 on the support frame 3 is a high-quality carbon structural steel structure.

[0079] The limiting baffle 8 has a wear-resistant coating in the area that contacts the corresponding sliding guide rail 2.

[0080] In application, the sliding guide rails 2 at both ends of the rotating cylinder 1 cooperate with the bearings 32 on the corresponding support frame 3. The hydraulic mechanism 33 controls the oil supply to the static pressure oil chamber 4 of the bearing 32 to form a suspension support for the rotating cylinder 1. The pressure and flow rate are adjusted by operating the hydraulic mechanism, thereby controlling the suspension amount. The axial and radial limits of the sliding guide rails 2 are set by the limit baffles 8 on the support frame 3. The rotating cylinder 1 is rotated and kept in a suspended state during rotation by an external drive device.

[0081] Example 2

[0082] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0083] The suspended rotating cylinder has a suspension height of 0.05mm on the corresponding support frame.

[0084] The limiting baffle, used as the contact area with the corresponding sliding guide rail, is made of wear-resistant zinc-aluminum alloy plate.

[0085] Example 3

[0086] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0087] The suspended rotating cylinder has a suspension height of 0.04 mm on the corresponding support frame.

[0088] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0089] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A support device for a rotating cylinder of a particle therapy instrument, wherein the rotating cylinder (1) has rotating tracks at both ends of its neck; Corresponding to the rotating tracks at both ends of the rotating cylinder (1), the support device has two sets of support frames (3) arranged at intervals. Its features are: Each set of support frames (3) has a support frame (31) and bearing bushes (32) arranged on the support frame (31) and a hydraulic mechanism (33). The support frame (31) supports the rotating cylinder (1) at the corresponding rotating track of the rotating cylinder (1) through the bearing bushes (32). The bearing surface of the bearing bush (32) has a hydrostatic oil chamber (4), and a plurality of oil inlet holes (6) connected to the hydraulic mechanism (33) are arranged in the hydrostatic oil chamber (4). The support frame (3) provides a suspended support for the rotating cylinder (1) via the hydraulic mechanism (33).

2. The support device for the rotating cylinder of the particle therapy instrument according to claim 1, characterized in that: The bearing surface of the bearing shell (32) of the support frame (3) has oil return grooves (5) distributed on the outer periphery of the hydrostatic oil chamber (4). The oil return groove (5) has multiple oil return holes (7) that connect to the hydraulic mechanism (33).

3. The support device for the rotating cylinder of the particle therapy device according to claim 1 or 2, characterized in that: The support frame (3) has limiting baffles (8) forming rotating grooves on both sides of the bearing shell (32) axially. Correspondingly, the rotation track of the rotating cylinder (1) is a sliding guide rail (2) with a radially convex structure, and the outer periphery of the sliding guide rail (2) has an axially outwardly folded bearing portion; The sliding guide rail (2) of the rotating cylinder (1) is inserted into the rotating groove of the corresponding support frame (3), and is limited on both sides of the axial direction and radial direction by the limiting baffle (8) on the support frame (3). The sliding guide rail (2) cooperates with the bearing bush (32) in the rotating groove through the bearing part.

4. The support device for the rotating cylinder of the particle therapy instrument according to claim 3, characterized in that: The limiting baffle (8) on the support frame (3) and the corresponding sliding guide rail (2) of the rotating cylinder (1) are provided with a flexible sealing structure at the opening of the rotating groove.

5. The support device for the rotating cylinder of the particle therapy instrument according to claim 4, characterized in that: The flexible sealing structures of the sliding guide rails (2) at both ends of the rotating cylinder (1) and the corresponding support frame (3) are different; The flexible sealing structure of the sliding guide rail (2) at one end of the rotating cylinder (1) and the corresponding support frame (3) is filled in the gap between the sliding guide rail (2) and the corresponding limiting baffle (8) and fills the gap between the sliding guide rail (2) and the corresponding limiting baffle (8). The flexible sealing structure of the sliding guide rail (2) at the other end of the rotating cylinder (1) and the corresponding support frame (3) is arranged outside the gap between the sliding guide rail (2) and the corresponding limiting baffle (8), sealing the gap between the sliding guide rail (2) and the corresponding limiting baffle (8), and there is an axial movement gap between the sliding guide rail (2) and the corresponding limiting baffle (8).

6. The support device for the rotating cylinder of the particle therapy device according to claim 5, characterized in that: The limiting baffle (8) on the support frame (3) has an axially inwardly folded radial baffle, and the cross-section of the limiting baffle (8) is L-shaped. Correspondingly, the sliding guide rail (2) of the rotating cylinder (1) has a T-shaped cross-section.

7. The support device for the rotating cylinder of the particle therapy instrument according to claim 6, characterized in that: The inner side of the radial baffle of the limiting baffle (8) has an auxiliary bearing (9). The rotating cylinder (1) which is suspended and supported has a sliding guide rail (2) that is in sliding engagement with the auxiliary bearing (9) of the limiting baffle (8).

8. The support device for the rotating cylinder of the particle therapy instrument according to claim 3, characterized in that: The limiting baffle (8) on the support frame (3) is a carbon steel structure; The limiting baffle (8) serves as the area that contacts the corresponding sliding guide rail (2) and has a wear-resistant coating or wear-resistant zinc-aluminum alloy plate.

9. The support device for the rotating cylinder of the particle therapy instrument according to claim 1, characterized in that: The hydrostatic oil chambers (4) on the bearing surface of the bearing bush (32) are multiple and spaced together.

10. The support device for the rotating cylinder of the particle therapy instrument according to claim 1, characterized in that: The suspended rotating cylinder (1) has a suspension height of 0.01 to 0.05 mm on the corresponding support frame (3).

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