A radiation protection structure for a cylinder magnetic sensor

Abstract

This utility model discloses a radiation protection structure for a cylinder magnetic sensor, comprising: a cylinder, a magnetic sensor disposed on the cylinder, and a first protective cover, a second protective cover, and a third protective cover sequentially disposed on one side of the magnetic sensor. A fixing block is provided on one side of the cylinder, and the magnetic sensor is fixed to the fixing block. The first protective cover, the second protective cover, and the third protective cover are sequentially disposed on the outside of the fixing block. This utility model achieves dual isolation from ionizing radiation and electromagnetic interference through the layered design of the first protective cover, the second protective cover, and the third protective cover, and also has good resistance to mechanical impact.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic actuator technology, and in particular to a radiation protection structure for a cylinder magnetic sensor. Background Technology

[0002] Cylinders are usually equipped with magnetic sensors to detect the position of the piston in the cylinder to determine whether the cylinder's mechanical action has been completed. However, in some operating environments with X-rays, the magnetic sensors have no protective measures. The precision electronic components inside the magnetic sensors are easily affected by ionizing radiation, which can cause signal interference and lead to malfunctions of the magnetic sensors. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a radiation-proof structure for a cylinder magnetic sensor.

[0004] The objective of this utility model is achieved through the following technical solution: A radiation protection structure for a cylinder magnetic sensor includes: a cylinder, a magnetic sensor disposed on the cylinder, and a first protective cover, a second protective cover, and a third protective cover sequentially disposed on one side of the magnetic sensor. A fixing block is provided on one side of the cylinder, and the magnetic sensor is fixed on the fixing block. The first protective cover, the second protective cover, and the third protective cover are sequentially disposed on the outside of the fixing block.

[0005] In one embodiment, the fixing block is integrally formed with the cylinder, and a placement part is provided in the middle of the fixing block. The placement part has a vertical placement groove, and the magnetic sensor is fixed in the placement groove. Both sides of the fixing block relative to the placement part are connecting parts, and the first protective cover, the second protective cover and the third protective cover are connected to the two connecting parts on the fixing block.

[0006] In one embodiment, the first protective cover is made of sheet metal and includes a first covering portion and a first abutting portion. The first covering portion covers the outside of the placement portion, and the first abutting portion abuts against the connecting portion on one side of the placement portion.

[0007] In one embodiment, the thickness of the first protective cover is 0.5 mm.

[0008] In one embodiment, the second protective cover is made of high-purity lead plate. The second protective cover includes a second covering part and a second abutting part. The second covering part covers the outside of the first covering part, and the second abutting part abuts against the side of the first abutting part away from the connecting part.

[0009] In one embodiment, the thickness of the second protective cover is 1 mm.

[0010] In one embodiment, the third protective cover is made of sheet metal and includes a third covering part and a third abutting part. The third covering part covers the outside of the second covering part, and the third abutting part abuts against the side of the second abutting part away from the first abutting part.

[0011] In one embodiment, the thickness of the third protective cover is 0.5 mm.

[0012] In one embodiment, the first protective cover, the second protective cover, and the third protective cover are filled with lead rubber sealing strips for tight connection between adjacent parts.

[0013] In one embodiment, hot melt adhesive is provided at the connection points between the first protective cover, the second protective cover, and the third protective cover and the fixing block.

[0014] Compared with the prior art, the present invention has at least the following advantages: 1. The anti-radiation structure of the cylinder magnetic sensor of this utility model adopts a layered design with a first protective cover and a third protective cover with sheet metal on the inner and outer sides and a second protective cover with high-purity lead plate in the middle. Under the premise of ensuring shielding performance, it is lighter than a single-layer protective cover with pure lead plate and its mechanical impact resistance is improved by 200%, so as to achieve dual isolation of ionizing radiation and electromagnetic interference. 2. The radiation shielding structure of the cylinder magnetic sensor of this utility model ensures the continuity of radiation shielding by filling the adjacent first protective cover, second protective cover and third protective cover with lead rubber sealing strips. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0016] Figure 1 A schematic diagram of a radiation protection structure for a cylinder magnetic sensor provided by this utility model; Figure 2 An exploded structural diagram of a radiation protection structure for a cylinder magnetic sensor provided by this utility model.

[0017] Figure descriptions: 10, cylinder; 20, magnetic sensor; 30, first protective cover; 31, first covering part; 32, first abutting part; 40, second protective cover; 41, second covering part; 42, second abutting part; 50, third protective cover; 51, third covering part; 52, third abutting part; 60, fixing block; 61, placement part; 611, placement groove; 62, connecting part. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0019] A radiation protection structure for a cylinder magnetic sensor, as shown in the reference. Figure 1 and Figure 2 The device includes a cylinder 10, a magnetic sensor 20 mounted on the cylinder 10, and a first protective cover 30, a second protective cover 40, and a third protective cover 50 sequentially mounted on one side of the magnetic sensor 20. A fixing block 60 is provided on one side of the cylinder 10, and the magnetic sensor 20 is fixed on the fixing block 60. The magnetic sensor 20 is used to sense the position of the piston of the cylinder 10. The first protective cover 30, the second protective cover 40, and the third protective cover 50 are sequentially mounted on the outside of the fixing block 60.

[0020] Furthermore, referring to Figure 1 and Figure 2 The fixing block 60 is integrally formed with the cylinder 10. A placement portion 61 is located in the middle of the fixing block 60, and a vertical placement groove 611 is provided on the placement portion 61. The magnetic sensor 20 is fixed within the placement groove 611. Both sides of the fixing block 60 relative to the placement portion 61 have connecting portions 62, and the first protective cover 30, the second protective cover 40, and the third protective cover 50 are connected to the two connecting portions 62 on the fixing block 60. It should be noted that there are two magnetic sensors 20, and two corresponding placement grooves 611 are provided on the placement portion 61, arranged adjacent to each other. A wiring connection to the magnetic sensor 20 is provided at one of the connecting portions 62 on one side of the placement portion 61; this wiring ensures the normal operation of the magnetic sensor 20.

[0021] Reference Figure 1 and Figure 2 The first protective cover 30 is made of sheet metal, which is made of lightweight metal to reduce its weight. The first protective cover 30 includes a C-shaped first covering portion 31 and a horizontally positioned first abutting portion 32. The first covering portion 31 covers the outside of the placement portion 61, and the first abutting portion 32 abuts against the connecting portion 62 on one side of the placement portion 61. It should be noted that the first covering portion 31 covers the placement portion 61 and the wiring connected to the magnetic sensor 20 on one side of the placement portion 61 to provide radiation protection for the magnetic sensor 20 on the placement portion 61.

[0022] Furthermore, referring to Figure 1 and Figure 2 The thickness of the first protective cover 30 is 0.5mm, and the radius of curvature (R) at the bend between the first covering part 31 and the first abutting part 32 of the first protective cover 30 is 0.5mm.

[0023] Furthermore, referring to Figure 1 and Figure 2 The second protective shield 40 is made of high-purity lead plate, which has a radiation shielding rate of ≥95%. The second protective shield 40, made of high-purity lead plate, plays a primary role in radiation protection. Its high-density properties allow it to absorb and reflect ionizing radiation (X-rays, gamma rays) and high-frequency electromagnetic interference, attenuating radiation energy to within a safe threshold (<0.1 μSv / h). The second protective shield 40 includes a C-shaped second covering part 41 and a horizontally arranged second abutting part 42. The second covering part 41 covers the outside of the first covering part 31, and the second abutting part 42 abuts against the side of the first abutting part 32 away from the connecting part 62. The second protective shield 40 is tightly connected to the first protective shield 30 to ensure the continuity of the radiation protection effect.

[0024] Furthermore, referring to Figure 1 and Figure 2 The thickness of the second protective cover 40 is 1mm, and the radius of curvature (R) at the bend between the second cover portion 41 and the second contact portion 42 of the second protective cover 40 is 0.5mm.

[0025] Furthermore, referring to Figure 1 and Figure 2 The third protective cover 50 is made of sheet metal, using lightweight metal to reduce its weight. The third protective cover 50 includes a C-shaped third covering portion 51 and a horizontally positioned third abutting portion 52. The third covering portion 51 extends to the outside of the second covering portion 41, and the third abutting portion 52 abuts against the side of the second abutting portion 42 away from the first abutting portion 32. The first protective cover 30, the second protective cover 40, and the third protective cover 50 are sequentially connected to ensure connectivity.

[0026] Furthermore, referring to Figure 1 and Figure 2 The thickness of the third protective cover 50 is 0.5mm, and the radius of curvature (R) at the bend between the third cover portion 51 and the third contact portion 52 of the third protective cover 50 is 0.5mm.

[0027] Furthermore, referring to Figure 1 and Figure 2 The first protective shield 30, the second protective shield 40 and the third protective shield 50 are filled with lead rubber sealing strips for tight connection. The lead rubber sealing strips are filled into the seams between the first protective shield 30 and the second protective shield 40 and between the second protective shield 40 and the third protective shield 50 to ensure the continuity of radiation shielding.

[0028] Furthermore, referring to Figure 1 and Figure 2The first protective cover 30, the second protective cover 40 and the third protective cover 50 are fixed to the fixing block 60 with hot melt adhesive. No additional drilling is required. They can be repeatedly disassembled and reassembled, which is convenient and quick.

[0029] This utility model combines three layers: a first protective cover 30, a second protective cover 40, and a third protective cover 50. The first protective cover 30 and the third protective cover 50 are made of sheet metal on the inner and outer sides, while the second protective cover 40 is made of high-purity lead plate in the middle. This layered design makes it lighter than a single-layer protective cover made of pure lead plate while ensuring shielding performance, and improves mechanical impact resistance by 200%, thus achieving dual isolation from ionizing radiation and electromagnetic interference.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A radiation protection structure for a cylinder magnetic sensor, characterized in that, include: The cylinder (10), the magnetic sensor (20) disposed on the cylinder (10), and the first protective cover (30), the second protective cover (40) and the third protective cover (50) sequentially disposed on one side of the magnetic sensor (20). A fixing block (60) is provided on one side of the cylinder (10), the magnetic sensor (20) is fixed on the fixing block (60), and the first protective cover (30), the second protective cover (40) and the third protective cover (50) sequentially are disposed on the outside of the fixing block (60).

2. The anti-radiation structure of a cylinder magnetic sensor according to claim 1, wherein, The fixing block (60) is integrally formed with the cylinder (10). The fixing block (60) has a placement part (61) in the middle position. The placement part (61) has a vertical placement groove (611). The magnetic sensor (20) is fixed in the placement groove (611). The fixing block (60) has two connecting parts (62) on both sides relative to the placement part (61). The first protective cover (30), the second protective cover (40) and the third protective cover (50) are connected to the two connecting parts (62) on the fixing block (60).

3. The radiation shielding structure for a cylinder magnetic sensor according to claim 2, wherein The first protective cover (30) is made of sheet metal. The first protective cover (30) includes a first covering part (31) and a first abutting part (32). The first covering part (31) covers the outside of the placement part (61), and the first abutting part (32) abuts against the connecting part (62) on one side of the placement part (61).

4. The radiation shielding structure for a magnetic sensor of an air cylinder according to claim 3, wherein The thickness of the first protective cover (30) is 0.5 mm.

5. The radiation shielding structure for a cylinder magnetic sensor according to claim 3, wherein The second protective cover (40) is made of high-purity lead plate. The second protective cover (40) includes a second covering part (41) and a second abutting part (42). The second covering part (41) covers the outside of the first covering part (31), and the second abutting part (42) abuts against the side of the first abutting part (32) away from the connecting part (62).

6. The radiation shielding structure for a magnetic sensor of an air cylinder according to claim 5, wherein The thickness of the second protective cover (40) is 1 mm.

7. The radiation shielding structure for a cylinder magnetic sensor according to claim 5, wherein The third protective cover (50) is made of sheet metal. The third protective cover (50) includes a third covering part (51) and a third abutting part (52). The third covering part (51) covers the outside of the second covering part (41), and the third abutting part (52) abuts against the side of the second abutting part (42) away from the first abutting part (32).

8. The radiation shielding structure for a magnetic sensor of an air cylinder according to claim 7, wherein The thickness of the third protective cover (50) is 0.5 mm.

9. The anti-radiation structure for a cylinder magnetic sensor according to claim 7, characterized in that, The first protective cover (30), the second protective cover (40) and the third protective cover (50) are filled with lead rubber sealing strips for tight connection between adjacent parts.

10. The anti-radiation structure for a cylinder magnetic sensor according to claim 7, characterized in that, Hot melt adhesive is provided at the connection points between the first protective cover (30), the second protective cover (40), and the third protective cover (50) and the fixing block (60).

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