A multi-set diaphragm switching device for supervising an ionization chamber

Abstract

The utility model discloses a kind of for supervising multiple diaphragm switching devices of ionization chamber, including shell, the shell top is open design, and shell top side wall is equipped with two symmetrical half-circular mouth, the detachable top cover of shell top surface is equipped with, the horizontal shaft is rotatably connected in shell interior by bearing, and the disc is fixed on the horizontal shaft surface;In the utility model, shell, horizontal shaft, disc, connecting rod, multiple installation components, diaphragm and servo motor are arranged, horizontal shaft is rotated by servo motor drive, to drive disc, connecting rod and installation component rotate specified angle, so that the diaphragm fixed in the inside of installation component rotates to the half-circular mouth of shell top, and is aligned with the center of supervising ionization chamber and radioactive source three, realize the quick switching between multiple diaphragm, the switching device structure is more compact, small, and more diaphragm can be installed, use more flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of aperture switching technology, and in particular to a multi-aperture switching device for monitoring an ionization chamber. Background Technology

[0002] In X-ray ionizing radiation measurement systems, the supervisory ionization chamber (SIEC) serves as the core monitoring unit, responsible for real-time detection of radiation field intensity and providing a reference signal for subsequent measurements. To accurately define the X-ray beam and adapt to different measurement conditions, a specific aperture needs to be installed at the front end of the SIEC for collimation. In traditional operations, changing different types of apertures requires manual labor, which is cumbersome and inefficient.

[0003] A search revealed that patent CN223078520U discloses a multi-aperture switching device for monitoring ionization chambers. By integrating multiple apertures into a single switching device, the required aperture can be aligned with the center of the monitoring ionization chamber and the radiation source and reach the predetermined working position through the translational movement of the drive device when needed. In this way, automatic aperture switching can be achieved.

[0004] However, the above-mentioned device has the following drawbacks: Firstly, the switching device uses lateral movement to switch multiple apertures. If multiple apertures are used, the lateral span of the entire device becomes very large, leading to a larger device size and requiring more installation space. Therefore, the number of apertures that can be installed in a limited space is limited. Secondly, when the device is not in use, the apertures are exposed and lack dustproof and protective structures. Therefore, further improvements are needed. To this end, we propose a multi-aperture switching device for monitoring ionization chambers. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-aperture switching device for monitoring ionization chambers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-aperture switching device for monitoring an ionization chamber, comprising a housing, the top of which is open, and two symmetrical semi-circular openings on the top side wall of the housing. A detachable top cover is fitted onto the top surface of the housing. A horizontal shaft is rotatably connected to the inside of the housing via bearings. A disc is fixed to the surface of the horizontal shaft. Multiple connecting rods are fixed at equal intervals on the outer side wall of the disc. An installation component is fixedly connected to the other end of each connecting rod. The installation component includes a first semi-circular hoop and a second semi-circular hoop. The first semi-circular hoop is fixedly connected to the connecting rod. A detachable aperture is engaged inside the first and second semi-circular hoops. A servo motor is installed on the outer side wall of the housing.

[0007] Furthermore, mounting plates are fixed on both sides of the bottom end of the outer casing, and mounting holes are provided in the middle of the mounting plates.

[0008] Furthermore, mounting plates are fixed on both sides of the inner wall of the top cover, and the mounting plates are magnetically attracted and fixed to the top of the outer shell.

[0009] Furthermore, one end of the horizontal axis is fixedly connected to the output end of the servo motor.

[0010] Furthermore, a first side plate is fixed to both ends of the first semicircular hoop, and a second side plate is fixed to both ends of the second semicircular hoop. An insert block is fixed to the surface of the second side plate. A notch for inserting the insert block is opened in the middle of the first side plate. A groove is opened on the side wall of one end of the insert block that passes through the notch. A spring is fixed to the inner side wall of the groove. A locking tooth is fixed to the other end of the spring. The locking tooth engages with the lower surface of the first side plate.

[0011] Furthermore, rubber pads are fixed to the inner walls of both the first and second semicircular hoops.

[0012] The beneficial effects of this utility model are:

[0013] 1. In use, this utility model comprises a housing, a horizontal shaft, a disc, a connecting rod, multiple sets of mounting components, an aperture, and a servo motor. The servo motor drives the horizontal shaft to rotate, thereby causing the disc, connecting rod, and mounting components to rotate by a specified angle. This allows the aperture, fixed inside the mounting components, to rotate to the semi-circular opening at the top of the housing, aligning with the center of the monitoring ionization chamber and the radiation source. This enables rapid switching between multiple apertures. The switching device has a more compact structure, occupies less space, can accommodate more apertures, and is more flexible and convenient to use.

[0014] 2. When in use, this utility model is equipped with an outer shell, a top cover, and multiple sets of apertures. When the switching device is not in use, the top cover can be placed on top of the outer shell to protect the apertures. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the entire utility model;

[0017] Figure 2 This is an overall sectional view of the present invention;

[0018] Figure 3 This is a partial perspective view of the present invention;

[0019] Figure 4 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0020] The attached figures are labeled as follows:

[0021] 1. Outer shell; 101. Semicircular opening; 2. Top cover; 201. Mounting plate; 3. Horizontal shaft; 4. Disc; 5. Connecting rod; 6. Mounting assembly; 61. First semicircular hoop; 62. Second semicircular hoop; 63. First side plate; 64. Second side plate; 65. Insert block; 66. Notch; 67. Groove; 68. Spring; 69. Clamping tooth; 7. Aperture; 8. Servo motor; 9. Mounting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-4 As shown, a multi-aperture switching device for monitoring an ionization chamber is disclosed, comprising a housing 1 with an open top and two symmetrical semi-circular openings 101 on the top side wall. A removable top cover 2 is fitted onto the top surface of the housing 1. A horizontal shaft 3 is rotatably connected to the inside of the housing 1 via bearings. A disc 4 is fixed to the surface of the horizontal shaft 3. Multiple connecting rods 5 are fixed at equal intervals on the outer side wall of the disc 4. An installation assembly 6 is fixedly connected to the other end of each connecting rod 5. The installation assembly 6 includes a first semi-circular clamp 61 and a second semi-circular clamp 62. The first semi-circular clamp 61 is fixedly connected to the connecting rod 5. A removable aperture 7 is engaged inside the first semi-circular clamp 61 and the second semi-circular clamp 62. A servo motor 8 is installed on the outer side wall of the housing 1.

[0024] One end of the horizontal axis 3 is fixedly connected to the output end of the servo motor 8.

[0025] The number of apertures 7 corresponds to the number of mounting components 6. By starting the servo motor 8 and rotating it by a specified angle, the horizontal axis 3 can be rotated by a specified angle, thereby causing the disk 4, connecting rod 5, mounting components 6, and apertures 7 to rotate accordingly. When switching apertures 7, the servo motor 8 is started and rotated by a specified angle so that the required aperture 7 rotates to the semi-circular opening 101 at the top of the outer casing 1, aligning the aperture 7 with the center of the monitoring ionization chamber and the radiation source. This switching device uses a rotary switching method, which allows for a more compact design, making it suitable for smaller installation spaces and enabling the installation of more apertures 7 in limited spaces.

[0026] Mounting plates 9 are fixed on both sides of the bottom of the outer casing 1, and mounting holes are provided in the middle of the mounting plates 9.

[0027] In this embodiment, the mounting hole is a strip-shaped hole, and the device can be installed and fixed in a designated position through the mounting plate 9.

[0028] The inner sidewalls of the top cover 2 are fixed with mounting plates 201, which are magnetically attached to the top of the outer shell 1. When the device is not in use, the top cover 2 can be directly placed on the top of the outer shell 1, with the mounting plates 201 in contact with the top of the outer shell 1 and magnetically attached. When in use, the top cover 2 can be simply removed from the top of the outer shell 1.

[0029] The first semicircular hoop 61 has a first side plate 63 fixed at both ends, and the second semicircular hoop 62 has a second side plate 64 fixed at both ends. The second side plate 64 has an insert block 65 fixed on its surface. The first side plate 63 has a notch 66 in the middle for inserting the insert block 65. The side wall of the insert block 65 passing through the notch 66 has a groove 67. The inner side wall of the groove 67 has a spring 68 fixed. The other end of the spring 68 has a locking tooth 69 fixed. The locking tooth 69 is engaged with the lower surface of the first side plate 63.

[0030] When installing the aperture 7 using the mounting component 6, the aperture 7 is first secured inside the first semicircular hoop 61, and then the second semicircular hoop 62 is secured to the surface of the aperture 7. The inserts 65 on the second side plates 64 on both sides of the second semicircular hoop 62 are inserted into the notches 66 on the first side plate 63. The bottom of the retaining tooth 69 is designed with a bevel, so during the process of inserting the insert 65 into the notch 66, the retaining tooth 69 will first be squeezed back into the groove 67 by the inner wall of the notch 66, and the spring 68 will be compressed. When the retaining tooth 69 has completely passed through the notch 66, the spring 68 squeezes the retaining tooth 69 to pop it out, so that the retaining tooth 69 is engaged with the lower surface of the first side plate 63. The first semicircular hoop 61 and the second semicircular hoop 62 are fixedly connected, thereby squeezing and fixing the aperture 7 in the middle.

[0031] If the aperture 7 needs to be replaced, first squeeze the retaining tooth 69 back into the groove 67, then remove the second semicircular band 62 from the surface of the first semicircular band 61, and then remove the aperture 7 for replacement.

[0032] Rubber pads are fixed to the inner walls of both the first semicircular hoop 61 and the second semicircular hoop 62. The rubber pads increase friction, making the aperture 7 more securely installed.

[0033] Working principle: In use, first remove the top cover 2, which is magnetically fixed by the mounting plate 201, to expose the semi-circular opening 101 on the top of the outer casing 1. When it is necessary to switch the aperture 7, start the servo motor 8 to drive the horizontal shaft 3 to rotate, which in turn drives the disc 4 and the circumferentially distributed connecting rods 5 and the mounting assembly 6 to rotate as a whole, precisely rotating the target aperture 7 to the semi-circular opening 101, aligning it with the monitoring ionization chamber and the radiation source. Finally, the entire device can be fixed in the designated position on the equipment through the slotted holes of the mounting plate 9, realizing a fast and compact switching of the aperture 7.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-aperture switching device for monitoring an ionization chamber, characterized in that: The device includes an outer shell (1), the top of which is open and has two symmetrical semicircular openings (101) on the top side wall. A removable top cover (2) is fitted on the top surface of the outer shell (1). A horizontal shaft (3) is rotatably connected inside the outer shell (1) via a bearing. A disc (4) is fixed on the surface of the horizontal shaft (3). Multiple connecting rods (5) are fixed at equal intervals on the outer side wall of the disc (4). An installation component (6) is fixedly connected to the other end of each connecting rod (5). The installation component (6) includes a first semicircular hoop (61) and a second semicircular hoop (62). The first semicircular hoop (61) is fixedly connected to the connecting rod (5). A removable aperture (7) is snapped into the interior of the first semicircular hoop (61) and the second semicircular hoop (62). A servo motor (8) is installed on the outer side wall of the outer shell (1).

2. The multi-aperture switching device for monitoring an ionization chamber according to claim 1, characterized in that: The outer shell (1) has mounting plates (9) fixed on both sides of its bottom end, and mounting holes are provided in the middle of the mounting plates (9).

3. A multi-aperture switching device for monitoring an ionization chamber according to claim 1, characterized in that: The inner sidewall of the top cover (2) is fixed with a mounting plate (201) on both sides, and the mounting plate (201) is fixed to the top of the outer shell (1) by magnetic attraction.

4. A multi-aperture switching device for monitoring an ionization chamber according to claim 1, characterized in that: One end of the horizontal axis (3) is fixedly connected to the output end of the servo motor (8).

5. A multi-aperture switching device for monitoring an ionization chamber according to claim 1, characterized in that: The first semicircular hoop (61) has a first side plate (63) fixed at both ends, and the second semicircular hoop (62) has a second side plate (64) fixed at both ends. The second side plate (64) has a plug (65) fixed on its surface. The first side plate (63) has a notch (66) in the middle for inserting the plug (65). The plug (65) has a groove (67) on the side wall of one end of the notch (66). The inner side wall of the groove (67) is fixed with a spring (68). The other end of the spring (68) is fixed with a locking tooth (69). The locking tooth (69) is engaged with the lower surface of the first side plate (63).

6. A multi-aperture switching device for monitoring an ionization chamber according to claim 1, characterized in that: Rubber pads are fixed to the inner walls of the first semicircular hoop (61) and the second semicircular hoop (62).

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