Cam plate structure of irradiator

Abstract

The utility model provides a cam plate structure of an irradiator, which comprises a cam plate, a circular through hole is arranged in the middle of the cam plate, a notch is arranged in the through hole, a wear-resistant cushion block is arranged in the notch, the wear-resistant cushion block is matched with the notch, a connecting lug is arranged on one side of the wear-resistant cushion block, and the wear-resistant cushion block is fixedly connected with the cam plate through the connecting lug. The utility model has the beneficial effects that by adopting the technical scheme, the wear resistance of the cam plate can be effectively improved, the maintenance frequency of equipment is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and specifically to a cam plate structure of an irradiator. Background Art

[0002] An X-ray biological irradiator is an analytical instrument used in the fields of biology, basic medicine, and pharmacy. It is mainly used for cancer biology, human genome, induced gene changes, stem cells, small animal irradiation, cell culture and division inhibition research, research on T-B cells, irradiation of blood cells and bone marrow transplantation, transplantation immunity, immunosuppressive therapy, radiosensitivity research, DNA damage research, food irradiation, microbial inactivation, plant and seed irradiation, etc.

[0003] The lead chamber of the irradiator is the place where the irradiated products in the irradiator receive irradiation. The lead chamber is a square box structure as a whole. A tube is installed at the back plate of the lead chamber for emitting X-rays. Inside the lead chamber, a plurality of irradiation cups are arranged on the outer periphery of the tube for containing irradiated products, such as blood bags. During the irradiation process, the plurality of irradiation cups will revolve around the tube, and at the same time, the irradiation cups will also rotate. This is to avoid only one side of the irradiation cup facing the tube head. To further explain the movement posture of the irradiation cup: the irradiation cup is cylindrical. Inside the lead chamber, the axes of the irradiation cup and the tube are arranged horizontally. At any position during the revolution of the irradiation cup around the tube, the upper part in the vertical direction is taken as a marking point. During the revolution process, this marking point is always above the irradiation cup in the vertical direction.

[0004] As Figure 1 shown, the irradiation cup is fixedly arranged on the irradiation cup seat 1. The revolution of the irradiation cup is realized by driving with a bearing 2 and a motor 3 whose axes are horizontally arranged, and the rotation of the irradiation cup is mainly realized by a cam structure. The cam structure includes a cam plate 4. A circular through hole is provided in the middle of the cam plate. As Figure 2 shown, the through hole of the cam plate is eccentrically arranged with the revolution orbit 7 of the irradiation cup. A rotation driving mechanism is arranged between the cam plate and the irradiation cup. The rotation driving mechanism includes a synchronous ring 5, a roller 6, a roller shaft, a strip-shaped connecting plate, and an irradiation cup shaft. The irradiation cup shaft and the roller shaft are respectively vertically arranged at both ends of the strip-shaped connecting plate. The roller shaft passes through the synchronous ring 5, and the roller 6 rolls along the inner wall of the circular through hole of the cam plate 4. The motor drives the irradiation cup to revolve, and the roller rolls along the inner wall of the through hole. Due to the eccentric arrangement of the circular through hole of the cam plate 4, the synchronous ring 5 will drive a plurality of irradiation cups to rotate synchronously. Within the range of about half a circumference on the inner side of the circular through hole of the cam plate 4 is the concentrated stress position of the radial pressure of the roller 6. To reduce the overall weight of the equipment, the cam plate is usually made of aluminum alloy. Therefore, after a long time of rolling, relatively serious wear will occur in the range of about half a circumference of the inner wall of the through hole. Summary of the Utility Model

[0005] The utility model aims to provide a cam plate structure, which can effectively reduce the wear of the inner wall of the cam plate through hole, reduce the maintenance frequency of equipment, and increase the service life of the equipment.

[0006] The technical solution of the utility model is:

[0007] A cam plate structure of an irradiator comprises a cam plate, wherein a circular through hole is provided in the middle of the cam plate, a notch is provided in the through hole, a wear-resistant pad is provided in the notch, the wear-resistant pad cooperates with the notch, a connecting ear is provided on one side of the wear-resistant pad, and the wear-resistant pad is fixedly connected to the cam plate via the connecting ear.

[0008] The wear-resistant pad cooperates with the notch to keep the through hole in a circular profile. The wear-resistant pad is made of high carbon steel and is set in the easily worn area of the inner wall of the circular through hole, which greatly improves the wear resistance of the cam plate made of aluminum alloy and increases the service life of the cam plate while keeping the cam plate light in weight.

[0009] The connecting ear is arranged on the outer edge of the wear-resistant pad, and the connecting ear is fixedly connected with the cam plate.

[0010] The wear-resistant pad is in the shape of an arc strip.

[0011] The main function of the cam plate is to set a circular through hole on the cam plate for matching with the roller. Therefore, the size of the cam plate does not need to be too large. For the convenience of processing and assembly, the cam plate is usually set to a square shape, and its side length only needs to be slightly larger than the diameter of the through hole. The wear-resistant pad is set to an arc strip shape. On the premise of improving the wear resistance of the cam plate, the requirement for increasing the size of the cam plate when setting the wear-resistant pad is reduced.

[0012] Both ends of the wear-resistant pad are provided with dovetail-shaped protrusions, and the cam plate is provided with slots matched with the dovetail-shaped protrusions.

[0013] The arc-shaped wear-resistant pad has an arc diameter of about 1m, but its width and thickness are only about 1cm. It is difficult to process it into a standard arc shape. If the arc is not standard, the wear-resistant pad will not be smoothly connected with the notch, and a step will be formed on the inner wall of the circular through hole of the cam plate, which will reduce the smoothness of the roller passing through. The utility model provides dovetail-shaped protrusions at both ends of the wear-resistant pad, and the dovetail-shaped protrusions cooperate with the dovetail slots on the cam plate, thereby ensuring the accuracy of the cooperation between the wear-resistant pad and the notch, thereby improving the flatness of the inner wall of the circular through hole.

[0014] Preferably, the thickness of the dovetail-shaped protrusion is less than that of the cam plate. The dovetail protrusion is flush with the side surface of the wear-resistant cushion block on one side of the connecting ear, and a step is formed at the dovetail protrusion. The dovetail groove cooperating with the dovetail protrusion does not completely penetrate the cam plate. In the thickness direction of the cam plate, the depth of the dovetail groove matches the thickness of the dovetail protrusion. Through the above settings, after the dovetail protrusion is inserted into the dovetail groove, it can effectively ensure that both sides of the wear-resistant cushion block are flush with both sides of the cam plate.

[0015] Specifically, the connecting ear is fixedly connected to the cam plate by bolts. The connection method of the bolts can press the dovetail protrusion into the dovetail groove, achieving the purpose that both sides of the wear-resistant cushion block are flush with both sides of the cam plate.

[0016] The advantages and positive effects of the present utility model are: Due to the adoption of the above technical solution, the wear resistance of the cam plate can be effectively improved, the maintenance frequency of the equipment can be reduced, and the service life can be increased. Description of the Drawings

[0017] Figure 1 It is a schematic structural principle diagram of the movement of the irradiation cup seat in the irradiator

[0018] Figure 2 It is a schematic structural diagram in which the through hole of the cam plate and the revolution orbit of the irradiation cup are eccentrically arranged

[0019] Figure 3 It is a schematic structural principle diagram of the irradiation cup cam plate

[0020] In the figure:

[0021] 1. Irradiation cup seat 2. Bearing 3. Motor

[0022] 4. Cam plate 5. Synchronous ring 6. Roller

[0023] 7. Revolution orbit 8. Wear-resistant cushion block 41. Card slot

[0024] 81. Connecting ear 82. Dovetail-shaped protrusion Detailed Embodiment

[0025] As Figure 3 shown, the present utility model:

[0026] A cam plate structure of an irradiator, including a cam plate 4. A circular through hole is provided in the middle of the cam plate. A notch is provided in the through hole. A wear-resistant cushion block 8 is provided in the notch. The wear-resistant cushion block cooperates with the notch. A connecting ear 81 is provided on one side of the wear-resistant cushion block 8. The wear-resistant cushion block 8 is fixedly connected to the cam plate 4 through the connecting ear 81.

[0027] The wear-resistant cushion block 8 is in the shape of an arc strip.

[0028] Both ends of the wear-resistant spacer are provided with dovetail-shaped protrusions 82, and the cam plate is provided with a clamping groove 41 that matches the dovetail-shaped protrusions.

[0029] The thickness of the dovetail-shaped protrusion 82 is less than the thickness of the cam plate 4.

[0030] The connecting ear 81 is fixedly connected to the cam plate 4 by bolts.

[0031] Working process of this embodiment:

[0032] During installation, the two dovetail-shaped protrusions 82 are embedded into the clamping groove 41 on the cam plate, and the wear-resistant spacer 8 and the cam plate 4 are fixed with bolts. The wear-resistant spacer 8 and the cam plate form a continuous circular through-hole, providing support for the roller and improving the wear resistance of the inner wall of the circular through-hole of the cam plate.

[0033] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A cam plate structure of an irradiator, including a cam plate, wherein a circular through-hole is provided in the middle of the cam plate, and it is characterized in that: A notch is provided in the through hole, a wear-resistant cushion block is provided in the notch, the wear-resistant cushion block is matched with the notch, a connecting ear is provided on one side of the wear-resistant cushion block, and the wear-resistant cushion block is fixedly connected with the cam plate through the connecting ear.

2. The cam plate structure of the irradiator according to claim 1, characterized in that: The wear-resistant cushion block is in an arc-shaped strip shape.

3. The cam plate structure of the irradiator according to claim 2, wherein: Dovetail-shaped protrusions are provided at both ends of the wear-resistant cushion block, and a clamping groove matched with the dovetail-shaped protrusions is provided on the cam plate.

4. The cam plate structure of the irradiator according to claim 3, wherein: The thickness of the dovetail-shaped protrusion is smaller than the thickness of the cam plate.

5. The cam plate structure of the irradiator according to claim 4, characterized in that: The connecting ear is fixedly connected with the cam plate through a bolt.

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