Neutron target clamping structure and neutron treatment device

Abstract

The utility model relates to the field of neutron treatment equipment, particularly provides a neutron target clamping structure and a neutron treatment device, and aims to solve the problems that a target replacing structure of a neutron treatment device in the prior art is not easy to disassemble and the target replacing efficiency is low. In order to achieve the purpose, the neutron target clamping structure comprises a beam tube, a target disc, a clamping unit and a driving assembly, and the target disc is detachably arranged at the end of the beam tube; the clamping unit is movably arranged on the side wall of the beam tube; the driving assembly is connected with the clamping unit so as to drive the clamping unit to fix or loosen the target disc. According to the scheme, tedious operation of the robot is omitted, the difficulty of replacing the neutron target by the robot is reduced, and the target replacing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of neutron treatment equipment, and specifically provides a neutron target clamping structure and a neutron treatment device. Background Art

[0002] BNCT (boron neutron capture therapy) is a new and rapidly developing precision diagnosis and treatment technology in the field of international tumor treatment in recent years, known as the "fifth therapy". It first injects targeted molecules carrying 10B into the human body, and the targeted drugs will selectively accumulate in the tumor tissue. Then, the tumor site is irradiated with a directional low-energy epithermal neutron beam, which reacts with the boron-containing drugs in the tumor tissue, releasing alpha particles and 7Li particles, with a range of about the size of a cancer cell, which kills cancer cells in a targeted manner without damaging the surrounding normal cells.

[0003] In the boron neutron capture therapy system, the neutron conversion target system is a key component, which converts protons into neutrons. However, the beryllium target will deform due to the bombardment of protons and long-term heat, so it needs to be replaced periodically. Due to the radiation of neutrons themselves, robots are basically used to automatically replace targets in medical systems, so its connection structure is required to ensure firmness and stability while being easy to disassemble and install. At present, the flange connection of the neutron target basically adopts a bolt connection structure, which is difficult to disassemble and takes a long time to disassemble during the disassembly process.

[0004] Accordingly, the art needs a new neutron target clamping structure to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above technical problems, that is, to solve the problems that the target replacement structure of the neutron treatment device in the prior art is difficult to disassemble and the target replacement efficiency is low. To this end, the utility model provides a neutron target clamping structure, which includes:

[0006] A beam tube and a target plate, wherein the target plate is detachably arranged at the end of the beam tube;

[0007] A clamping unit, wherein the clamping unit is movably arranged on a side wall of the beam tube;

[0008] A driving assembly is connected to the clamping unit to drive the clamping unit to fix or release the target disk.

[0009] In a specific embodiment of the above-mentioned neutron target clamping structure, the clamping unit includes 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 to the beam tube, the ends of the radial clamping rods abut against the radial edges of the target disk; the ends of the axial clamping rods abut against the axial end face of the target disk.

[0010] In a specific embodiment of the above-mentioned neutron target clamping structure, there are three radial clamping rods and three axial clamping rods, the angle between adjacent radial clamping rods is 120°, the angle between adjacent axial clamping rods is 120°, and the angle between adjacent radial clamping rods and axial clamping rods is 60°.

[0011] In a specific embodiment having the above-mentioned neutron target clamping structure, the driving assembly includes a driving connecting rod and a telescopic driving device, the driving connecting rod includes 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 and the other end of the second connecting rod are hinged to form a combined hinge point, and the telescopic driving device is connected to the combined hinge point to drive the first connecting rod and the second connecting rod to move.

[0012] In a specific embodiment having the above neutron target clamping structure, the first connecting rod and the second connecting rod may be arranged in a colinear manner so that the radial clamping rod and the axial clamping rod abut against the target disk.

[0013] In a specific embodiment having the above-mentioned neutron target clamping structure, the drive assembly also includes a synchronization ring, which is sleeved on the beam tube and can move along the axial direction of the beam tube, one end of the synchronization ring is hinged to the combined hinge point, and the other end is connected to the telescopic drive device.

[0014] In a specific embodiment of the neutron target clamping structure, at least two telescopic drive devices are arranged on the beam tube at equal intervals.

[0015] In a specific embodiment of the above-mentioned neutron target clamping structure, the clamping structure also includes a first mounting seat and a second mounting seat, a plurality of the first mounting seats are circumferentially equidistantly arranged on the outer surface of the end side wall of the beam tube, the axial clamping rod and the radial clamping rod correspond to the first mounting seat and are hingedly connected, a plurality of the second mounting seats are circumferentially equidistantly arranged on the outer wall of the beam tube, and the first connecting rod corresponds to the second mounting seat and is hingedly connected.

[0016] In a specific embodiment of the neutron target clamping structure, cushion layers are provided on the abutting surfaces of the ends of the radial clamping rod and the axial clamping rod.

[0017] The utility model also provides a neutron treatment device, which comprises the neutron target clamping structure described in any one of the above schemes.

[0018] Under the condition of adopting the above technical scheme, the utility model optimizes and improves the clamping structure of the neutron target. The traditional target plate fixing connection mechanism is a bolt connection locking. When disassembling, the robot needs to unscrew the bolts with a disassembly tool, which is not easy to disassemble. The bolts may also be accidentally disengaged during the disassembly process. The disassembly and replacement time is long and the efficiency is low. The clamping structure of the utility model installs a clamping unit on the beam tube, and drives the clamping unit to clamp the target plate at the end of the beam tube through a driving component. When replacement is required, the driving component only needs to drive the clamping unit to loosen the target plate to achieve replacement, which saves the cumbersome operation of the robot, reduces the difficulty of replacing the neutron target by the robot, and improves the target replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0020] Figure 1 This is a side view of the neutron target clamping structure of the utility model. Figure 1 , which shows the state when the neutron target clamping structure is released;

[0021] Figure 2 This is a side view of the neutron target clamping structure of the utility model. Figure 2 , which shows the state of the neutron target clamping structure when it is locked;

[0022] Figure 3 It is a front view of the neutron target clamping structure of the utility model, which shows the state of the neutron target clamping structure when it is locked.

[0023] In the figure: 1. beam tube, 2. target plate, 3. clamping unit, 4. drive assembly, 5. radial clamping rod, 6. axial clamping rod, 7. telescopic drive device, 8. first connecting rod, 9. second connecting rod, 10. combined hinge point, 11. synchronization ring, 12. first mounting seat, 13. second mounting seat, 14. cushion layer. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the protection scope of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0025] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the relevant devices or components must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, ordinal numbers such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1-3 As shown, the utility model proposes a neutron target clamping structure, the clamping structure comprising:

[0028] A beam tube 1 and a target plate 2, wherein the target plate 2 is detachably arranged at the end of the beam tube 1;

[0029] A clamping unit 3, wherein the clamping unit 3 is movably arranged on a side wall of the beam tube 1;

[0030] A driving assembly 4 is connected to the clamping unit 3 to drive the clamping unit 3 to fix or release the target plate 2.

[0031] In this embodiment, a new neutron target clamping mechanism is proposed. Before describing the structure of the utility model, the neutron target structure in the prior art is first described. The traditional structure is to install the target material on the inner surface of the flange, and then connect the flange to the end of the beam tube 1 by bolts. When the target material is replaced, the above connection method is generally performed by robot operation. However, in order to remove the flange connected by bolts, each bolt needs to be loosened one by one. The robot needs to operate the corresponding screwdriver or wrench, which increases the difficulty of operation. In addition, during the disassembly process, the bolts may be disengaged, resulting in a long replacement time and reduced target replacement efficiency.

[0032] The neutron target clamping structure of the utility model installs a target plate 2 at the end of a beam tube 1, and a driving component 4 and a clamping unit 3 are installed on the beam tube 1. The clamping unit 3 can be driven by the driving component 4 to move. The clamping unit 3 is movably arranged on the beam tube 1, and the clamping unit 3 can fix or loosen the target plate 2. When the target plate 2 needs to be replaced, it is only necessary to control the driving component 4 to move, and drive the clamping unit 3 to loosen the target plate 2. The robot can easily and quickly replace the target plate 2, which saves the process of robot disassembly, improves the efficiency of target replacement, and reduces the difficulty of target replacement.

[0033] Further, the clamping unit 3 can be divided into a radial clamping rod 5 and an axial clamping rod 6. Both types of clamping rods are hingedly connected to the beam tube 1 in the middle and can swing around the hinge point. The driving assembly 4 can drive the radial clamping rod 5 and the axial clamping rod 6 to swing around the hinge point and then abut against the target plate 2, wherein the end of the radial clamping rod 5 abuts against the circumferential edge of the target plate 2, and the direction of the applied clamping force is along the radial direction of the target plate 2, and the end of the axial clamping rod 6 abuts against the outer end face of the target plate 2 along the axial direction, and the direction of the applied force is along the axial direction of the target plate 2. The radial clamping rod 5 ensures the centering position of the target plate 2, and the axial clamping rod 6 ensures the axial clamping strength.

[0034] On the basis of the above-mentioned embodiment, the number and layout of the axial clamping rods 6 and the radial clamping rods 5 can be selected as needed. For example, three axial clamping rods 6 and three radial clamping rods 5 can be selected, wherein the angle between adjacent axial clamping rods 6 is 120°, the angle between adjacent radial clamping rods 5 is also 120°, and the angle between adjacent axial clamping rods 6 and radial clamping rods 5 is 60°. The layout of the clamping rods makes the clamping force applied radially and axially relatively balanced, which can ensure accurate radial and axial positioning and meet the fixing strength requirements.

[0035] On the basis of the above embodiment, the driving assembly 4 for driving the radial clamping rod 5 or the axial clamping rod 6 can be a mode in which the telescopic driving device 7 drives the driving connecting rod, 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 hinge point 10, and a detachable pin can be set at the combined hinge point 10, the other end of the first connecting rod 8 is hinged to the beam tube 1, and the other end of the second connecting rod 9 is also a hinge point, and the second connecting rod 9 is hinged to the radial clamping rod 5 at the position corresponding to the radial clamping rod 5; the second connecting rod 9 is hinged to the axial clamping rod 6 at the position corresponding to the axial clamping rod 6, and multiple groups of first connecting rods 8 and second connecting rods 9 are driven by the telescopic driving device 7, so that the axial clamping rod 6 and the radial clamping rod 5 fix the target plate 2. Among them, the telescopic driving device 7 can be set in plurality, corresponding to the number of the axial clamping rod 6 and the radial clamping rod 5, and the telescopic driving device 7 can be a cylinder, an electric cylinder, an oil cylinder or other devices.

[0036] On the basis of the above embodiment, the length of each rod 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 just abut against the target plate 2, and play a role in fixing the target plate 2. By utilizing the principle of the dead points of the first connecting rod 8 and the second connecting rod 9, after the target plate 2 is clamped, the two connecting rods are in a collinear state, the forces are balanced, and self-locking is formed, so that the locking of the target plate 2 can be more secure.

[0037] On the basis of the above embodiments, a synchronization ring 11 can be provided on the beam tube, and the synchronization ring 11 sleeve can move along the axial direction of the beam tube 1. One side surface of the synchronization ring 11 is connected to the telescopic end of the telescopic drive device 7, and the other end is hinged to the merged connection point. In an optional implementation mode, the hinge can be realized by a connecting rod; the telescopic drive device 7 drives the synchronization ring 11 to move, and the synchronization ring 11 can simultaneously drive multiple merged connection points to move, thereby making multiple groups of first connecting rods 8 and second connecting rods 9 move at the same time, and the axial clamping rod 6 and the radial clamping rod 5 can simultaneously lock and fix the target plate 2. At the same time, under the action of the balancing force, the target plate 2 also realizes rapid radial positioning, and efficient sealing can also be guaranteed in the axial direction.

[0038] Furthermore, based on the structure of the synchronization ring 11, there can be two or more telescopic drive devices 7, which can be arranged on the beam tube 1 in a circle with equal spacing. On the one hand, the force on the synchronization ring 11 can be more uniform and the synchronization of movement can be improved. On the other hand, by adopting the synchronization ring 11, the number of telescopic drive devices 7 can be appropriately reduced, which can save costs and simplify the structure.

[0039] On the basis of the above embodiment, in order to facilitate installation, a first mounting seat 12 and a second mounting seat 13 are installed on the beam tube 1, the first mounting seat 12 is used to be hinged with the axial clamping rod 6 and the radial clamping rod 5, and the second mounting seat 13 is used to be hinged with the first connecting rod 8. The first mounting seat 12 and the second mounting seat 13 can more conveniently install the connecting rod and facilitate maintenance.

[0040] On the basis of the above-mentioned embodiment, a cushion layer 14 is provided on the contact surface between the axial clamping rod 6 and the radial clamping rod 5 and the target plate 2. The ends of the axial clamping rod 6 and the radial clamping rod 5 have different degrees of bending parts according to the different contact positions. The cushion layer 14 on the contact surface can increase the friction force and improve the clamping stability.

[0041] The utility model also provides a neutron treatment device, which comprises the neutron target clamping structure of any one of the above embodiments, thereby improving the efficiency of replacing the target material of the device.

[0042] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A neutron target clamping structure, characterized in that: The clamping structure comprises: A beam tube (1) and a target plate (2), wherein the target plate (2) is detachably arranged at the end of the beam tube (1); A clamping unit (3), the clamping unit (3) being movably arranged on a side wall of the beam tube (1); A driving component (4) is connected to the clamping unit (3) to drive the clamping unit (3) to fix or release the target plate (2).

2. The neutron target clamping structure according to claim 1, characterized in that: The clamping unit (3) comprises a plurality of radial clamping rods (5) and a plurality of axial clamping rods (6); the middle parts of the radial clamping rods (5) and the axial clamping rods (6) are both hinged to the beam tube (1); the ends of the radial clamping rods (5) abut against the radial edges of the target disk (2); and the ends of the axial clamping rods (6) abut against the axial end face of the target disk (2).

3. The neutron target clamping structure according to claim 2, characterized in that: There are three radial clamping rods (5) and three axial clamping rods (6), the angle between adjacent radial clamping rods (5) is 120°, the angle between adjacent axial clamping rods (6) is 120°, and the angle between adjacent radial clamping rods (5) and axial clamping rods (6) is 60°.

4. The neutron target clamping structure according to claim 3, characterized in that: The driving assembly (4) comprises a driving connecting rod and a telescopic driving device (7), wherein the driving connecting rod comprises a first connecting rod (8) and a second connecting rod (9), wherein one end of the first connecting rod (8) is hinged to the beam tube (1), and one end of the second connecting rod (9) is hinged to the axial clamping rod (6) or the radial clamping rod (5), and the other end of the first connecting rod (8) and the other end of the second connecting rod (9) are hinged to form a combined hinge point (10), and the telescopic driving device (7) is connected to the combined hinge point (10) to drive the first connecting rod (8) and the second connecting rod (9) to move.

5. The neutron target clamping structure according to claim 4, characterized in that: The first connecting rod (8) and the second connecting rod (9) can be arranged in a colinear manner so that the radial clamping rod (5) and the axial clamping rod (6) abut against the target disk (2).

6. The neutron target clamping structure according to claim 5, characterized in that: The driving assembly (4) further comprises a synchronization ring (11), wherein the synchronization ring (11) is sleeved on the beam tube (1) and is movable along the axial direction of the beam tube (1), wherein one end of the synchronization ring (11) is hinged to the combined hinge point (10), and the other end is connected to the telescopic driving device (7).

7. The neutron target clamping structure according to claim 6, characterized in that: The telescopic driving devices (7) are at least two and are arranged on the beam tube (1) at equal intervals.

8. The neutron target clamping structure according to claim 4, characterized in that: The clamping structure further comprises a first mounting seat (12) and a second mounting seat (13); a plurality of the first mounting seats (12) are circumferentially evenly spaced 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) correspond to the first mounting seat (12) and are hingedly connected; a plurality of the second mounting seats (13) are circumferentially evenly spaced on the outer wall of the beam tube (1); and the first connecting rod (8) corresponds to the second mounting seat (13) and is hingedly connected.

9. The neutron target clamping structure according to claim 2, characterized in that: Cushion layers (14) are provided on the abutment surfaces of the ends of the radial clamping rod (5) and the axial clamping rod (6).

10. A neutron therapy device, characterized in that: The neutron treatment device comprises the neutron target clamping structure according to any one of claims 1 to 9.

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