Device for disassembling and assembling ECR neutron source permanent magnet

Abstract

The invention discloses a device for disassembling and assembling an ECR neutron source permanent magnet. The device comprises an inner fixed gripper, an outer fixed gripper and a transmission system. Three pneumatic pressing rods are arranged at the tail end of the inner fixing gripper and used for fixing a first-stage strong magnet, three sliding rails are arranged on the surface of the top end and used for positioning the inner fixing gripper and the outer fixing gripper, the relative positions of the inner fixing gripper and the outer fixing gripper are not deflected, and threads are arranged in the top end. Three pneumatic pressing rods are arranged at the tail end of the outer fixing gripper and used for fixing the second-stage strong magnet. The transmission system is composed of a stepping motor and a screw rod with threads, the screw rod penetrates through the inner fixed gripper and the outer fixed gripper, movement of the fixed grippers is achieved through rotation of the motor, and meanwhile a clamping ring is arranged at the position of the screw rod and plays a role in fixing a bearing. According to the method, the risk of damage to the neutron source permanent magnet during disassembly and assembly can be effectively reduced, operation is simple and efficient, meanwhile, the personal safety of engineers is guaranteed, and certain help is provided for system maintenance and installation of the ECR neutron source.

Description

Technical Field

[0001] The invention belongs to the field of compact accelerator neutron sources, and in particular relates to a device for disassembling and assembling an ECR neutron source permanent magnet. Background Art

[0002] The ECR (Electron Cyclotron Resonance) neutron source is a device that uses a strong magnetic field and a microwave field to produce highly charged ions, which are accelerated to produce neutrons on the target. In the ECR ion source, permanent magnets play a vital role. They provide the necessary magnetic field to maintain the stability of the plasma and accelerate the ions. However, when maintaining, upgrading or replacing the ECR neutron source, these permanent magnets need to be disassembled. Therefore, it is particularly important to develop a device specifically for disassembling and assembling the permanent magnets of the ECR neutron source.

[0003] The permanent magnets of ECR ​​neutron sources are usually designed as compact structures to provide high magnetic field strength while maintaining the compactness of the equipment. These permanent magnets are made of strong magnetic materials such as neodymium iron boron, which can provide the magnetic field required for electron cyclotron resonance, with a magnetic field strength of about 875 Gauss (Gs). Due to the strong magnetic properties of these permanent magnets, traditional tools and methods cannot effectively dismantle and install them, and the safety of personnel and equipment is easily endangered during the dismantling process. At the same time, a lot of time and cost are wasted during the dismantling process, so special equipment is required for safe and efficient dismantling and installation. Summary of the invention

[0004] In order to solve the above-mentioned problems of time-consuming, labor-intensive and unsafe disassembly and assembly of permanent magnets, the present invention provides a device for disassembling and assembling ECR neutron source permanent magnets. The device is simple in design and easy to operate, which can save a lot of time and cost during the disassembly and assembly process, and also reduces the risk of harm to the safety of personnel and equipment during the disassembly and assembly process.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A device for disassembling and assembling an ECR neutron source permanent magnet comprises a stepping motor, a coupling, a transmission screw, an external fixed gripper, an internal fixed gripper, a primary pneumatic pressure rod, a secondary pneumatic pressure rod, a primary magnet, a secondary magnet, and a slide rail;

[0007] The stepper motor is connected to the transmission screw through a coupling. The transmission screw is placed in the outer gripper cylinder of the outer fixed gripper from one side of the outer fixed gripper, and at the same time, the inner fixed gripper is nested into the outer gripper cylinder of the outer fixed gripper from the other side of the outer fixed gripper by rotating the coupling, wrapping the transmission screw; the end of the inner fixed gripper is connected to the primary pneumatic pressure rod for fixing the primary magnet; the end of the outer fixed gripper is connected to the secondary pneumatic pressure rod for fixing the secondary magnet; the top of the inner fixed gripper is provided with a thread, which directly cooperates with the transmission screw to realize transmission, and three slide rails are provided on the outside to determine the relative position with the outer fixed gripper; the stepper motor provides power to the coupling and the transmission screw, and realizes the up and down movement of the inner fixed gripper by rotating the transmission screw, thereby disassembling and assembling the magnet.

[0008] Furthermore, the internal fixing gripper and the external fixing gripper are both made of high-nitrogen non-magnetic stainless steel.

[0009] Furthermore, the strength of the external fixation gripper is enhanced by adding ribs.

[0010] Furthermore, it also includes a pneumatic pressure rod air inlet, a fixing platform, and a protective cover. The pneumatic pressure rod air inlet is located at the bottom of the fixing platform, and a protective cover is provided outside the fixing platform.

[0011] Furthermore, it also includes a snap ring and a plane bearing. A groove is set on the transmission screw to place the snap ring, so as to press the plane bearing. The snap ring and the plane bearing are nested on the transmission screw.

[0012] Furthermore, the fixing platform is made of high-nitrogen non-magnetic stainless steel.

[0013] Furthermore, a groove is formed on the top of the external fixing gripper for accommodating a plane bearing.

[0014] Furthermore, the external fixed gripper is provided with an end gripper force arm, and the end gripper force arm comprises a cross bar connected to the secondary pneumatic pressure rod and an oblique bar connected to the external fixed gripper, and a rib plate is provided between the cross bar and the oblique bar for reinforcement.

[0015] Further,

[0016] The first-stage pneumatic pressure rod and the second-stage pneumatic pressure rod are two independent pressure systems, which are integrally connected to the air inlet of the pneumatic pressure rod on the fixed platform through an air pipe.

[0017] Furthermore, there are three first-stage pneumatic pressure rods and three second-stage pneumatic pressure rods, which are arranged 120 degrees apart.

[0018] Beneficial effects:

[0019] The present invention can separate and install magnets on high-strength magnets. The equipment uses a pneumatic pressure rod as a clamp, which is stable and reliable. The device is simple and quick to operate, avoiding the problem of damage to magnets in traditional disassembly and assembly, greatly improving the work efficiency of disassembling and assembling strong magnets. At the same time, the protective cover outside the device can also ensure the safety of scientific researchers and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of a device for disassembling and assembling an ECR neutron source permanent magnet according to the present invention.

[0021] Figure 2 The figure is an overall schematic diagram of a device for disassembling and assembling an ECR neutron source permanent magnet according to the present invention.

[0022] In the figure, the reference numerals are: 1 stepper motor; 2 coupling; 3 transmission screw; 4 retaining ring; 5 plane bearing; 6 external fixed gripper; 6-1 external gripper cylinder; 7 internal fixed gripper; 7-1 internal gripper cylinder; 8-1 primary pneumatic pressure rod; 8-2 secondary pneumatic pressure rod; 9-1 primary magnet; 9-2 secondary magnet; 10 rib plate; 11 pneumatic pressure rod air inlet; 12 fixed platform; 13 protective cover; 14 slide rail; 15 end gripper large force arm; 16 end gripper small force arm. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] like Figure 1-Figure 2 As shown, a device for disassembling and assembling an ECR neutron source permanent magnet according to an embodiment of the present invention includes a stepper motor 1, a coupling 2, a transmission screw 3, a retaining ring 4, a plane bearing 5, an external fixed gripper 6, an internal fixed gripper 7, a primary pneumatic pressure rod 8-1, a secondary pneumatic pressure rod 8-2, a primary magnet 9-1, a secondary magnet 9-2, a rib plate 10, a pneumatic pressure rod air inlet 11, a fixing platform 12 and a protective cover 13.

[0025] The stepper motor 1 is connected to the transmission screw 3 through the coupling 2, and the transmission screw 3 is embedded with the retaining ring 4 and the plane bearing 5, and then placed in the cylinder of the external fixed gripper 6 from one side of the external fixed gripper 6, and at the same time, the internal fixed gripper 7 is embedded into the cylinder of the external fixed gripper 6 from the other side of the external fixed gripper 6 by rotating the coupling 2, and wraps the transmission screw 3. The end of the internal fixed gripper 7 is connected to the primary pneumatic pressure rod 8-1, and the end of the external fixed gripper 6 is connected to the secondary pneumatic pressure rod 8-2. The pneumatic pressure rod air inlet 11 is located at the bottom of the fixed platform 12, and a protective cover 13 is provided on the outside of the fixed platform 12.

[0026] The external fixed gripper 6 is provided with an end gripper arm 15, and the end gripper arm 15 is connected to the secondary pneumatic pressure rod 8-2. The end gripper arm 15 includes a cross bar connected to the secondary pneumatic pressure rod 8-2 and an inclined rod connected to the external fixed gripper 6, and the cross bar is vertically connected to the secondary pneumatic pressure rod 8-2. A rib plate 10 is provided between the cross bar and the inclined rod for reinforcement.

[0027] The inner fixed gripper 7 is provided with an end gripper arm 16, which is connected to the primary pneumatic pressure rod 8-1. The end gripper arm 16 includes a cross bar connected to the primary pneumatic pressure rod 8-1 and an inclined bar connected to the inner fixed gripper 7, and the cross bar is vertically connected to the primary pneumatic pressure rod 8-1.

[0028] Preferably, the top of the inner fixed gripper 7 is provided with a thread, and the inner gripper cylinder 7-1 is nested in the outer gripper cylinder 6-1 and penetrated by a transmission screw, which has a diameter of 70mm and an inner thread diameter of 40mm. It directly cooperates with the transmission screw 3 to realize transmission. The outside of the inner fixed gripper 7 is provided with three slide rails 14, which are on the outer wall of the inner gripper cylinder 7-1, and the angle between the three slide rails 14 is 120 degrees. At the same time, the inner wall of the corresponding outer gripper cylinder 6-1 is provided with three slide rails 120 degrees apart, which are used to determine the relative position with the external fixed gripper 6. Three primary pneumatic pressure rods 8-1 are provided at the end of the inner fixed gripper 7. The three primary pneumatic pressure rods 8-1 are 120 degrees apart, and the telescopic range of the primary pneumatic pressure rod 8-1 is a circle with a diameter of 25mm, which is used to fix the primary magnet 9-1.

[0029] Preferably, the outer gripper cylinder 6-1 has a diameter of 80 mm, and a bearing groove with a diameter of 70 mm and a depth of 15 mm is opened at the top for placing the plane bearing 5. The end gripper force arm 15 is located between the outer fixed gripper 6 and the secondary pneumatic pressure rod 8-2, is 150 mm long, and is provided with three secondary pneumatic pressure rods 8-2, with an angle of 120 degrees between the secondary pneumatic pressure rods 8-2, for fixing the secondary magnet 9-2.

[0030] Preferably, the transmission system comprises a stepper motor 1, a coupling 2, and a transmission screw 3. The transmission screw 3 penetrates the inner fixed gripper 7 and the outer fixed gripper 6, and is powered by the stepper motor 1, passes through the coupling 2 and the transmission screw 3, and the transmission screw 3 cooperates with the internal thread, and the inner fixed gripper 7 is moved up and down by rotating the transmission screw 3.

[0031] The working process of the present invention is:

[0032] First, the air inlet 11 of the pneumatic pressure rod is connected, and the first-level pneumatic pressure rod 8-1 and the second-level pneumatic pressure rod 8-2 on the inner fixed gripper 7 and the outer fixed gripper 6 are tested respectively to ensure that the pressure of each pressure rod is greater than 5 kg.

[0033] Then the stepper motor 1 is tested, and the internal fixing gripper 7 can be slowly adjusted to move left and right through control.

[0034] Secondly, when the first-level pneumatic pressure rod 8-1, the second-level pneumatic pressure rod 8-2 and the stepper motor 1 are tested and found to be OK, adjust the internal fixing gripper 7 to the far left, open the first-level pneumatic pressure rod 8-1, put in the first-level magnet 9-1, and lock the first-level pneumatic pressure rod 8-1; open the second-level pneumatic pressure rod 8-2, put in the second-level magnet 9-2 and lock it. The first-level magnet 9-1 and the second-level magnet 9-2 are respectively located at the central axis positions of the first-level pneumatic pressure rod 8-1 and the second-level pneumatic pressure rod 8-2. The operator needs to stay behind the protective cover 13 and slowly adjust the stepper motor 1 so that the first-level magnet 9-1 slowly approaches the second-level magnet 9-2. When it is about to approach, the corresponding magnet gasket can be placed between the two magnets according to the equipment requirements until the two magnets are completely adsorbed on the column. At this time, the first-level pneumatic pressure rod 8-1 is turned off first, and then the second-level pneumatic pressure rod 8-2 is turned off.

[0035] Finally, when the two magnets need to be removed, first adjust the internal fixed gripper 7 to the rightmost end and place the magnet in the middle so that the two groups of magnets can be locked separately when the primary magnet 9-1 and the secondary magnet 9-2 are turned on. After the magnets are locked, adjust the stepper motor 1 and move the internal fixed gripper 7 to the left until it reaches the leftmost section. At this time, remove the magnet locked by the external fixed gripper 6 first, and keep it as far away from the other magnet as possible. Take out the two magnets and place them separately to avoid violent collision caused by magnetic attraction, which may damage the magnets or injure people.

[0036] The present invention does not elaborate on some of the common technologies of those skilled in the art. The above-described embodiments are only descriptions of preferred implementations of the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementations described. Without departing from the design spirit of the present invention, various modifications and improvements made by ordinary technicians in this field to the technical solution of the present invention should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A device for disassembling and assembling an ECR neutron source permanent magnet, characterized in that: It includes a stepper motor, a coupling, a transmission screw, an external fixed gripper, an internal fixed gripper, a primary pneumatic pressure rod, a secondary pneumatic pressure rod, a primary magnet, a secondary magnet, and a slide rail; The stepper motor is connected to the transmission screw through a coupling. The transmission screw is placed in the outer gripper cylinder of the outer fixed gripper from one side of the outer fixed gripper, and at the same time, the inner fixed gripper is nested into the outer gripper cylinder of the outer fixed gripper from the other side of the outer fixed gripper by rotating the coupling, wrapping the transmission screw; the end of the inner fixed gripper is connected to the primary pneumatic pressure rod for fixing the primary magnet; the end of the outer fixed gripper is connected to the secondary pneumatic pressure rod for fixing the secondary magnet; the top of the inner fixed gripper is provided with a thread, which directly cooperates with the transmission screw to realize transmission, and three slide rails are provided on the outside to determine the relative position with the outer fixed gripper; the stepper motor provides power to the coupling and the transmission screw, and realizes the up and down movement of the inner fixed gripper by rotating the transmission screw, thereby disassembling and assembling the magnet.

2. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: The internal fixing gripper and the external fixing gripper are both made of high-nitrogen non-magnetic stainless steel.

3. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: The strength of the external fixation gripper is enhanced by adding ribs.

4. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: It also includes a pneumatic pressure rod air inlet, a fixing platform, and a protective cover. The pneumatic pressure rod air inlet is located at the bottom of the fixing platform, and a protective cover is arranged outside the fixing platform.

5. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: It also includes a snap ring and a plane bearing. A groove is arranged on the transmission screw rod for accommodating the snap ring so as to press the plane bearing. The snap ring and the plane bearing are nested on the transmission screw rod.

6. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: The fixing platform is made of high-nitrogen non-magnetic stainless steel.

7. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: The top end of the external fixing gripper is grooved for placing a plane bearing.

8. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: The external fixed gripper is provided with an end gripper force arm, and the end gripper force arm comprises a cross bar connected with the secondary pneumatic pressure rod and an oblique bar connected with the external fixed gripper, and a rib plate is provided between the cross bar and the oblique bar for reinforcement.

9. The device for disassembling and assembling the permanent magnet of the ECR neutron source according to claim 4, characterized in that: The first-stage pneumatic pressure rod and the second-stage pneumatic pressure rod are two independent pressure systems, which are integrally connected to the air inlet of the pneumatic pressure rod on the fixed platform through an air pipe.

10. The device for disassembling and assembling the ECR neutron source permanent magnet according to claim 1, characterized in that: There are three first-stage pneumatic pressure rods and three second-stage pneumatic pressure rods, which are arranged 120 degrees apart.

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