CN222400037U

CN222400037U - Neutron target clamping structure and neutron treatment device

Info

Publication number: CN222400037U
Application number: CN202420874894.6U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Guozhong Medical Technology Chongqing Co ltd
Current assignee: Guozhong Medical Technology Chongqing Co ltd
Priority date: 2024-04-25
Filing date: 2024-04-25
Publication date: 2025-01-28
Anticipated expiration: 2034-04-25

Abstract

The utility model relates to the field of neutron therapy equipment, and specifically provides a neutron target clamping structure and a neutron therapy device, aiming to solve the problem that the target replacement structure of the neutron therapy device in the prior art is not easy to disassemble and the target replacement efficiency is low. To this end, the neutron target clamping structure of the utility model includes a beam tube, a target plate, a clamping unit and a drive assembly, wherein the target plate is detachably arranged at the end of the beam tube; the clamping unit is movably arranged on the side wall of the beam tube; and the drive assembly is connected to the clamping unit to drive the clamping unit to fix or release the target plate. Through the above scheme, the cumbersome operation of the robot is omitted, the difficulty of the robot replacing the neutron target is reduced, and the target replacement efficiency is improved.

Description

Neutron target clamping structure and neutron treatment device

Technical Field

The utility model relates to the field of neutron treatment equipment, and particularly provides a neutron target clamping structure and a neutron treatment device.

Background

BNCT (boron neutron capture therapy) is an emerging and rapidly developing accurate diagnosis and treatment technology in the field of international tumor treatment in recent years, and is called as 'fifth therapy'. The targeting molecule carrying 10B is injected into a human body, the targeting drug can be selectively gathered in tumor tissues, then the tumor sites are irradiated by directional low-energy epithermal neutron beams, nuclear reaction is carried out on the targeting drug and the boron-containing drug in the tumor tissues, alpha particles and 7Li particles are released, the range of the targeting drug is about one cancer cell in size, and the cancer cells are killed directionally without damaging surrounding normal cells.

In a boron neutron capture treatment system, a neutron conversion target system is a key component, and is used for converting protons into neutrons, but beryllium targets are bombarded by the protons and deform after long-time heating, so that the targets need to be periodically replaced, and the automatic target replacement of a robot is basically adopted in a medical system due to the radiation of neutrons, so that the connection structure of the neutron conversion target system is required to be convenient to detach and install while ensuring firmness and stability. At present, the flange plate connection of the neutron target basically adopts a bolt connection structure, and the problems of difficult disassembly and long disassembly time exist in the disassembly process.

Accordingly, there is a need in the art for a new neutron target gripping structure that addresses the above-described issues.

Disclosure of utility model

The utility model aims to solve the technical problems that a neutron therapeutic device replacement target structure in the prior art is not easy to detach and the replacement efficiency is low. To this end, the utility model provides a neutron target clamping structure, the clamping structure comprising:

the target disc is detachably arranged at the end part of the beam tube;

The clamping unit is movably arranged on the side wall of the beam tube;

And the driving assembly is connected with the clamping unit to drive the clamping unit to fix or loosen the target disk.

In the concrete implementation mode with the neutron target clamping structure, the clamping unit comprises a plurality of radial clamping rods and a plurality of axial clamping rods, the middle parts of the radial clamping rods and the axial clamping rods are hinged with the beam tube, the end parts of the radial clamping rods are abutted with the radial edge of the target disc, and the end parts of the axial clamping rods are abutted with the axial end face of the target disc.

In a specific embodiment with the neutron target clamping structure, the number of the radial clamping rods and the number of the axial clamping rods are three, the included angle between every two adjacent radial clamping rods is 120 degrees, the included angle between every two adjacent axial clamping rods is 120 degrees, and the included angle between every two adjacent radial clamping rods and each axial clamping rod is 60 degrees.

In a specific embodiment with the neutron target clamping structure, the driving assembly comprises a driving connecting rod and a telescopic driving device, the driving connecting rod comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the beam tube, one end of the second connecting rod is hinged to the axial clamping rod or the radial clamping rod, the other end of the first connecting rod is hinged to the other end of the second connecting rod to form a combined hinge point, and the telescopic driving device is connected with the combined hinge point to drive the first connecting rod and the second connecting rod to move.

In a specific embodiment having the neutron target clamping structure described above, the first link and the second link may be disposed in line such that the radial clamping rod and the axial clamping rod are abutted against the target disk.

In the specific implementation mode with the neutron target clamping structure, the driving assembly further comprises a synchronizing ring, the synchronizing ring is sleeved on the beam tube and can move along the axial direction of the beam tube, one end of the synchronizing ring is hinged with the merging hinge point, and the other end of the synchronizing ring is connected with the telescopic driving device.

In a specific embodiment with the neutron target clamping structure, at least two telescopic driving devices are arranged on the beam tube at equal intervals in a circumferential mode.

In a specific embodiment with the neutron target clamping structure, the clamping structure further comprises a first mounting seat and a second mounting seat, the circumferences of the first mounting seats are equidistantly arranged on the outer surface of the side wall of the end portion of the beam tube, the axial clamping rods and the radial clamping rods are corresponding to the first mounting seat and are hinged to the first mounting seat, the circumferences of the second mounting seats are equidistantly arranged on the outer wall of the beam tube, and the first connecting rods are corresponding to the second mounting seat and are hinged to the second mounting seat.

In a specific embodiment with the neutron target clamping structure, cushion layers are arranged on abutting surfaces of the ends of the radial clamping rods and the axial clamping rods.

The utility model also provides a neutron treatment device, which comprises the neutron target clamping structure according to any one of the schemes.

Under the condition of adopting the technical scheme, the clamping structure of the neutron target is optimized and improved, the traditional target disc fixing and connecting mechanism is in bolted connection and locking, when the neutron target is disassembled, a robot needs to unscrew a bolt through a disassembling tool, the neutron target is not easy to disassemble, unexpected situations of bolt tripping can also occur in the disassembling process, the disassembling and replacing time is long, the efficiency is low, the clamping structure in the utility model is characterized in that the clamping unit is arranged on the beam tube, the driving assembly drives the clamping unit to clamp the target disc at the end part of the beam tube, and when the neutron target needs to be replaced, the driving assembly only needs to drive the clamping unit to loosen the target disc, so that the replacement of the robot is omitted, the difficulty of replacing the neutron target by the robot is reduced, and the target replacing efficiency is improved.

Drawings

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic side view of a neutron target gripping structure of the present utility model, showing the neutron target gripping structure in a relaxed state;

FIG. 2 is a side schematic view II of the neutron target gripping structure of the utility model, showing the neutron target gripping structure in a locked state;

fig. 3 is a front view of the neutron target gripping structure of the utility model, showing the neutron target gripping structure in a locked state.

In the figure, 1, a beam tube, 2, a target disc, 3, a clamping unit, 4, a driving assembly, 5, a radial clamping rod, 6, an axial clamping rod, 7, a telescopic driving device, 8, a first connecting rod, 9, a second connecting rod, 10, a merging hinge point, 11, a synchronizing ring, 12, a first mounting seat, 13, a second mounting seat, 14 and a cushion layer.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. Those skilled in the art can adapt it as desired to suit a particular application.

It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directional or positional relationships, and are based on the directional or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the relevant devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the ordinal terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected, mechanically connected or electrically connected, and may be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

As shown in fig. 1-3, the present utility model proposes a neutron target clamping structure, the clamping structure comprising:

the beam tube 1 and the target disc 2, wherein the target disc 2 is detachably arranged at the end part of the beam tube 1;

the clamping unit 3 is movably arranged on the side wall of the beam tube 1;

A driving assembly 4, wherein the driving assembly 4 is connected with the clamping unit 3 to drive the clamping unit 3 to fix or loosen the target disk 2.

In this embodiment, a new neutron target clamping mechanism is provided, before describing the structure of the present utility model, the neutron target structure in the prior art is described first, the conventional structure is that the target is mounted on the inner side surface of the flange, and then the flange is connected to the end of the beam tube 1 through bolts, in the above connection manner, when the target is replaced, the target is generally replaced through robot operation, but when the flange connected through bolts is to be removed, each bolt needs to be unscrewed one by one, the robot needs to operate a corresponding screwdriver or wrench, so that the operation difficulty is increased, in addition, in the removal process, the condition of tripping of the bolts may occur, the replacement time is long, and the target replacement efficiency is reduced.

According to the neutron target clamping structure, the target disc 2 is arranged at the end part of the beam tube 1, the driving component 4 and the clamping unit 3 are arranged on the beam tube 1, the clamping unit 3 can act through driving of the driving component 4, the clamping unit 3 is movably arranged on the beam tube 1, and the clamping unit 3 can fix or loosen the target disc 2. When the target plate 2 needs to be replaced, the target plate 2 can be easily and quickly replaced by the robot by controlling the driving assembly 4 to act and driving the clamping unit 3, so that the process of disassembling the robot is saved, the target replacing efficiency is improved, and the target replacing difficulty is reduced.

Further, the clamping unit 3 can be divided into a radial clamping rod 5 and an axial clamping rod 6, the two types of clamping rods are respectively hinged to the beam tube 1 at the middle part, the driving assembly 4 can swing around a hinge point, the radial clamping rod 5 and the axial clamping rod 6 can be driven to swing around the hinge point and then abut against the target disc 2, wherein the end part of the radial clamping rod 5 abuts against the circumferential edge of the target disc 2, the direction of the applied clamping force is along the radial direction of the target disc 2, the end part of the axial clamping rod 6 abuts against the outer end surface of the target disc 2 in the axial direction, the direction of the applied force is along the axial direction of the target disc 2, the radial clamping rod 5 ensures the centering position of the target disc 2, and the axial clamping rod 6 ensures the axial clamping strength.

On the basis of the above embodiment, the number of the axial clamping rods 6 and the radial clamping rods 5 can be selected to be proper according to the needs, and for example, three axial clamping rods 6 and three radial clamping rods 5 can be selected, wherein the included angle between the adjacent axial clamping rods 6 is 120 degrees, the included angle between the adjacent radial clamping rods 5 is 120 degrees, the included angle between the adjacent axial clamping rods 6 and the radial clamping rods 5 is 60 degrees, and the layout of the clamping rods ensures that the clamping forces applied in the radial direction and the axial direction are balanced, so that the radial positioning and the axial positioning are accurate, and the fixing strength meets the requirements.

On the basis of the embodiment, the driving assembly 4 for driving the radial clamping rod 5 or the axial clamping rod 6 can be in a mode of driving the driving connecting rod by the telescopic driving device 7, wherein the driving connecting rod is divided into a first connecting rod 8 and a second connecting rod 9, the ends of the first connecting rod 8 and the second connecting rod 9 are hinged together to form a combined hinged point 10, a detachable pin shaft can be arranged at the combined hinged point 10, the other end of the first connecting rod 8 is hinged with the beam tube 1, the other end of the second connecting rod 9 is also a hinged point, the position corresponding to the radial clamping rod 5 is hinged with the radial clamping rod 5, the position corresponding to the axial clamping rod 6 is hinged with the second connecting rod 9, and a plurality of groups of first connecting rod 8 and the second connecting rod 9 are driven by the telescopic driving device 7 to fix the target disc 2 by the axial clamping rod 6 and the radial clamping rod 5. The number of the telescopic driving devices 7 can be multiple, and the telescopic driving devices 7 can be air cylinders, electric cylinders, oil cylinders and other devices corresponding to the number of the axial clamping rods 6 and the radial clamping rods 5.

On the basis of the embodiment, the lengths of the rods can be adjusted, so that when the first connecting rod 8 and the second connecting rod 9 are in a collinear state, the axial clamping rod 6 and the radial clamping rod 5 are just abutted against the target disc 2, the target disc 2 is fixed, and the principle of dead points of the first connecting rod 8 and the second connecting rod 9 is utilized to clamp the target disc 2, so that the two connecting rods are collinear, balance stress and form self-locking, and the locking of the target disc 2 can be ensured.

On the basis of the embodiment, the synchronizing ring 11 can be arranged on the beam tube, the synchronizing ring 11 sleeve can move along the axial direction of the beam tube 1, one side surface of the synchronizing ring 11 is connected with the telescopic end of the telescopic driving device 7, the other end of the synchronizing ring is hinged with the merging connection point, the hinging can be realized through the connecting rod, the telescopic driving device 7 drives the synchronizing ring 11 to move, the synchronizing ring 11 can simultaneously drive a plurality of merging connection points to move, further, a plurality of groups of first connecting rods 8 and second connecting rods 9 can simultaneously act, the axial clamping rods 6 and the radial clamping rods 5 can simultaneously lock and fix the target disc 2, meanwhile, the target disc 2 also realizes radial rapid positioning under the action of balance force, and high-efficiency sealing can be ensured in the axial direction.

Furthermore, on the basis of the structure of the synchronizing ring 11, the number of the telescopic driving devices 7 can be two or more, the equidistant circumferences are arranged on the beam tube 1, so that on one hand, the stress of the synchronizing ring 11 is more uniform, the moving synchronism is improved, and on the other hand, the number of the telescopic driving devices 7 can be properly reduced by adopting the synchronizing ring 11, the cost is saved, and the structure is simplified.

On the basis of the above embodiment, in order to facilitate the installation, the first mounting seat 12 and the second mounting seat 13 are installed on the beam tube 1, the first mounting seat 12 is used for being hinged with the axial clamping rod 6 and the radial clamping rod 5, the second mounting seat 13 is used for being hinged with the first connecting rod 8, and the first mounting seat 12 and the second mounting seat 13 can more conveniently install the connecting rod, so that the maintenance is facilitated.

On the basis of the above embodiment, the pad layers 14 are disposed on the abutting surfaces of the axial clamping rod 6 and the radial clamping rod 5 and the target disc 2, and the end portions of the axial clamping rod 6 and the radial clamping rod 5 have different bending portions according to the abutting positions, so that the friction force can be increased by the pad layers 14 on the abutting surfaces, and the clamping stability is improved.

The utility model also provides a neutron treatment device, which comprises the neutron target clamping structure of any embodiment, and the efficiency of changing targets of the device is improved.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims

1. A neutron target gripping structure, the gripping structure comprising:

The device comprises a beam tube (1) and a target disc (2), wherein the target disc (2) is detachably arranged at the end part of the beam tube (1);

The clamping unit (3) is movably arranged on the side wall of the beam tube (1);

And the driving assembly (4) is connected with the clamping unit (3) to drive the clamping unit (3) to fix or loosen the target disc (2).

2. The neutron target clamping structure according to claim 1, wherein the clamping unit (3) comprises a plurality of radial clamping rods (5) and a plurality of axial clamping rods (6), the central parts of the radial clamping rods (5) and the axial clamping rods (6) are hinged with the Shu Liuguan (1), the end parts of the radial clamping rods (5) are abutted with the radial edge of the target disc (2), and the end parts of the axial clamping rods (6) are abutted with the axial end faces of the target disc (2).

3. Neutron target gripping structure according to claim 2, characterized in that the radial gripping bars (5) and the axial gripping bars (6) are each three, the angle between adjacent radial gripping bars (5) being 120 °, the angle between adjacent axial gripping bars (6) being 120 °, the angle between adjacent radial gripping bars (5) and axial gripping bars (6) being 60 °.

4. A neutron target gripping structure according to claim 3, wherein the driving assembly (4) comprises a driving link and a telescopic driving device (7), the driving link comprises a first link (8) and a second link (9), one end of the first link (8) is hinged with the Shu Liuguan (1), one end of the second link (9) is hinged with the axial gripping bar (6) or the radial gripping bar (5), the other end of the first link (8) and the other end of the second link (9) are hinged to form a merging hinge point (10), and the telescopic driving device (7) is connected with the merging hinge point (10) to drive the first link (8) and the second link (9) to move.

5. Neutron target gripping structure according to claim 4, characterised in that the first and second links (8, 9) are co-linearly arranged to bring the radial clamping bars (5) and the axial clamping bars (6) into abutment with the target disc (2).

6. The neutron target clamping structure according to claim 5, wherein the driving assembly (4) further comprises a synchronizing ring (11), the synchronizing ring (11) is sleeved on the beam tube (1) and can move along the axial direction of the Shu Liuguan (1), one end of the synchronizing ring (11) is hinged with the merging hinged point (10), and the other end of the synchronizing ring is connected with the telescopic driving device (7).

7. The neutron target gripping structure according to claim 6, wherein the telescopic driving means (7) are at least two and equally spaced circumferentially arranged on the beam tube (1).

8. The neutron target clamping structure according to claim 4, further comprising a first mounting seat (12) and a second mounting seat (13), wherein a plurality of the first mounting seats (12) are circumferentially and equidistantly arranged on the outer surface of the end side wall of the beam tube (1), the axial clamping rod (6) and the radial clamping rod (5) are correspondingly and hingedly connected with the first mounting seat (12), a plurality of the second mounting seats (13) are circumferentially and equidistantly arranged on the outer wall of the beam tube (1), and the first connecting rod (8) is correspondingly and hingedly connected with the second mounting seat (13).

9. Neutron target gripping structure according to claim 2, characterised in that the abutment surfaces of the ends of the radial gripping bars (5) and the axial gripping bars (6) are each provided with a shim (14).

10. A neutron treatment device comprising the neutron target gripping structure of any one of claims 1 to 9.