Stone radioactivity detector
By introducing hinged columns and barrier rod structures into the stone radioactive detector, the guide pins and adjustment rods are used to limit the rotation of the top cover, which solves the problem of cover body falling and achieves safe and reliable operation.
Patent Information
- Application Number
- CN202510389086.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-07-18
AI Technical Summary
Due to the lack of limiting components, the cover of existing stone radioactive detectors is prone to accidental drops when rotated, which is risky of operation.
The hinged column and barrier rod structure are adopted. The rotation range of the top cover is limited by the coordination of the guide pin and the adjustment rod. The rotation range is adjusted using the limit structure and the adjustment structure to ensure that the top cover will not fall due to the rotation range being too large.
It effectively avoids accidental drops caused by excessive weight of the cover, improves the safety and convenience of operation, and ensures the stable use of the detector.
Smart Images
Figure CN120334984A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stone radioactive detection technology, and particularly to a stone radioactive detector. Background Art
[0002] A stone radioactive detector is a device used to detect the radioactive levels of building decoration materials such as stones and floor tiles. It can quickly and non-destructively measure the radioactive levels of these materials and classify their radioactive categories according to national standards. In some enterprises engaged in stone production, when applying stones to daily home decoration, it is often necessary to first detect the radioactivity of the stones to avoid the human body being affected by radiation after long-term exposure. Among them, the low-background γ-ray spectrometry detector works by detecting γ-rays and can determine the presence and activity of different radionuclides.
[0003] Since it is necessary to detect the radioactivity of stones, it is necessary to ensure a sufficient sealed environment during measurement to block the spillage of radionuclides and improve the detection accuracy. In the prior art, generally, lead materials with good radiation barrier performance are used as the outer shell and cover of the detector to protect experimental personnel from radiation hazards. However, due to the extremely high density of lead materials and the lack of any limit components to restrict the opening amplitude of the cover when the cover moves, it is very easy to cause the cover to accidentally break away from the shell and fall, posing a great operational risk. Summary of the Invention
[0004] In order to be able to limit the rotation amplitude of the cover of the stone radioactive detector, so as to avoid the cover losing support due to excessive rotation amplitude when rotating the cover because the cover is extremely heavy and thus accidentally falling, this application provides a stone radioactive detector.
[0005] A stone radioactive detector provided by this application adopts the following technical solutions: A stone radioactive detector includes a cylindrical main body and a bracket installed below the main body. One side of the top end of the main body is integrally connected with a fixed block, and two hinge columns are integrally and symmetrically connected to the fixed block. A semi-circular top cover for closing the top of the main body is hinged to each of the two hinge columns. A positioning block is arranged on the top of the main body. Two blocking rods are symmetrically hinged to the inner side of the positioning block. The ends of the two blocking rods far from the positioning block are respectively in close contact with the outer sides of the two top covers. Through holes are respectively formed in the middle parts of the two blocking rods in the vertical direction. Adjusting rods are respectively slidably arranged in the two through holes. Waist-shaped holes are respectively formed in the two adjusting rods. Pin holes communicating with the through holes are formed in the top sides of the blocking rods. Guide pins with the bottom ends extending into the waist-shaped holes are inserted into the pin holes, and connecting pins are commonly connected to the ends of the two adjusting rods close to each other.
[0006] Optionally, the guide pin is provided with a limiting structure for controlling the horizontal distance between the guide pin and one end of the waist-shaped hole away from the connecting pin, the limiting structure includes a limiting plate with one end sleeved on the guide pin and a positioning pin integrally connected to the bottom side of the end of the limiting plate away from the guide pin, a spring is sleeved on the guide pin between the limiting plate and the barrier rod, a spin-pressed part for pressing the limiting plate is threadedly connected to the top of the guide pin, the positioning pin is located in the waist-shaped hole, and an adjustment structure for adjusting the horizontal distance between the positioning pin and the guide pin is provided on the spin-pressed part.
[0007] Optionally, the adjustment structure includes an adjusting worm wheel movably mounted on the guide pin and rotatably connected to the limit plate, a worm screw rotatably arranged on the top of the limit plate, and a positioning worm wheel fixedly mounted on the positioning pin, the positioning worm wheel and the adjusting worm wheel are respectively transmission-connected to the two ends of the worm screw along the axis, a strip groove is penetrated through the limit plate, an H wheel is slidably mounted in the strip groove, and the H wheel is mounted on the positioning pin.
[0008] Optionally, the fixed block is provided with a sliding groove on one side close to the main body, and two sliding blocks are symmetrically slidably arranged in the sliding groove. The two blocking rods are respectively hinged to the two sliding blocks, and a tension spring is connected between the two sliding blocks, and the tension spring is fixedly arranged in the middle of the sliding groove.
[0009] Optionally, both of the two adjusting rods are arc-shaped structures, and both of the two waist-shaped holes respectively opened on the two adjusting rods are arc-shaped structures with the same curvature as the adjusting rods.
[0010] Optionally, a rotating ring sleeve is rotatably provided on each of the two guide pins, and the rotating ring sleeve is in rolling contact with the side wall of the waist-shaped hole.
[0011] Optionally, an elastic rubber layer is laid on the side wall of the waist-shaped hole away from the connecting pin.
[0012] Optionally, pulleys are rotatably embedded in the ends of the two blocking rods away from the fixing block in the vertical direction, the diameter of the pulleys is larger than the lateral dimension of the blocking rods, and the pulleys are always in contact with the side walls of the top cover.
[0013] In summary, the present application includes at least one of the following beneficial technical effects: The present application can limit the rotation range of the top cover of the stone radioactivity detector when the top cover is rotated, thereby ensuring that the top cover will not lose support due to excessive rotation range, thereby causing the lead top cover to fall and cause an accident; The present application can adjust the range of the rotation amplitude of the top cover of the stone radioactivity detector, thereby making the opening and closing operation of the detector more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 FIG. 1 is a schematic view of the overall structure of a radioactive detector for stone materials according to the present application.
[0015] Figure 2 FIG. 2 is a structural view of the radioactive detector for stone materials according to the present application when it is opened.
[0016] Figure 3 FIG. 3 is an overall view of the rotation limiting structure of the radioactive detector for stone materials according to the present application.
[0017] Figure 4 FIG. 4 is a partial exploded view of the limiting structure and the adjusting structure of the radioactive detector for stone materials according to the present application.
[0018] Description of the reference numerals: 1, main body; 11, accommodation cavity; 12, fixed block; 121, hinged column; 122, sliding groove; 1221, slider; 1222, tension spring; 2, bracket; 3, top cover; 31, holding rod; 4, positioning block; 41, blocking rod; 411, through hole; 412, pin hole; 413, pulley; 5, adjusting rod; 51, kidney-shaped hole; 511, elastic rubber layer; 52, connecting pin; 6, guiding pin; 61, rotating ring sleeve; 7, limiting structure; 71, limiting plate; 711, strip-shaped groove; 712, H-shaped wheel; 72, positioning pin; 73, spring; 74, spinning part; 8, adjusting structure; 81, adjusting worm gear; 82, worm; 83, positioning worm gear. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following will further describe the present application in detail Figures 1-4 with reference to the accompanying drawings.
[0020] An embodiment of the present application discloses a radioactive detector for stone materials.
[0021] Referring to Figure 1 and Figure 2 , a radioactive detector for stone materials is used to measure the energy and intensity of γ-rays emitted by radionuclides in stone materials to ensure that the stone materials can be contacted and used daily. The detector specifically includes a cylindrical main body 1 and a bracket 2 installed below the main body 1 to support the main body 1. An accommodation cavity 11 communicating with the top is opened in the main body 1, and two top covers 3 for closing the accommodation cavity 11 are symmetrically hinged to the top of the main body 1. The top cover 3 and the accommodation cavity 11 of the main body 1 together form a closed environment to provide a detection space that can prevent radiation from leaking out. Specifically, one side of the top of the main body 1 is integrally connected with a fixed block 12, and two hinged columns 121 are symmetrically integrally connected to the fixed block 12. The same ends of the two top covers 3 are respectively hinged to the two hinged columns 121.
[0022] Preferably, the top cover 3 is of a semi-circular structure. When the accommodation cavity 11 is closed, the outer side wall of the top cover 3 coincides with the outer side wall of the main body 1, so that the detector has a smaller space volume. And a holding rod 31 is connected to one end of the top cover 3 away from the hinge column 121 for facilitating the user to rotate the top cover 3.
[0023] In order to prevent radiation from spilling during the detection process and thus affect the detection accuracy, the top cover 3 is made of lead material that can block radiation.
[0024] Refer to Figure 1 and Figure 3 Furthermore, a positioning block 4 is provided at the top of the main body 1 near the fixed block 12. Two blocking rods 41 are symmetrically hinged on the positioning block 4, and the ends of the two blocking rods 41 away from the positioning block 4 are respectively in close contact with the outer sides of the two top covers 3. Through holes 411 are respectively formed through the middle parts of the two blocking rods 41 in the vertical direction, and two adjusting rods 5 are respectively slidably arranged in the two through holes 411. The two adjusting rods 5 are of the same size, and waist-shaped holes 51 are respectively formed through them in the thickness direction. A pin hole 412 communicating with the through hole 411 at the other end is formed on the top side of the blocking rod 41, and a guide pin 6 with one end extending into the waist-shaped hole 51 is movably penetrated through the inside of the pin hole 412.
[0025] When the top cover 3 is opened, since the blocking rod 41 is in close contact with the outer side surface of the top cover 3, the top cover 3 will drive the blocking rod 41 to rotate around the hinge point. At this time, the guide pin 6 is driven to slide in the waist-shaped hole 51. When the guide pin 6 slides to the end of the waist-shaped hole 51, it will be restricted, and then the rotation amplitude of the top cover 3 is restricted through their connection relationship, playing a limiting role. The structure is simple and convenient for installation and operation, with high practicability.
[0026] Preferably, a connecting pin 52 is commonly connected to the ends of the two adjusting rods 5 close to each other, and the two adjusting rods 5 are respectively hinged to the connecting pin 52 to facilitate the limiting of the adjusting rods 5 and prevent the situation that the blocking rod 41 and the adjusting rods 5 move together resulting in unsmooth movement. At the same time, the axis of the connecting pin 52 is always on the vertical plane in the middle between the two blocking rods 41, and the connecting pin 52 is fixedly connected to the positioning block 4.
[0027] Preferably, the adjusting rod 5 is of an arc-shaped structure, and the waist-shaped hole 51 on the adjusting rod 5 is also of the same shape as the radian of the adjusting rod 5 to make the sliding of the guide pin 6 in the waist-shaped hole 51 more smooth.
[0028] Refer to Figure 3 and Figure 4, Preferably, rotating collar sleeves 61 are rotatably sleeved on both guiding pins 6. The rotating collar sleeves 61 are located in the kidney-shaped holes 51 and are in abutment with the inner side walls of the kidney-shaped holes 51. When the guiding pins 6 move in the kidney-shaped holes 51, the rotating collar sleeves 61 can change the movement of the guiding pins 6 into rolling, making the rotation of the retaining rod 41 smoother and reducing the wear between the adjusting rod 5 and the guiding pins 6. For the top cover 3 made of lead material, the rotating collar sleeves 61 can minimize the resistance when the top cover 3 is opened, making it more labor-saving.
[0029] Referring to Figure 3 and Figure 4 , Further, elastic rubber layers 511 are laid on the inner side walls of the two ends of the adjusting rod 5 that are far away from each other of the kidney-shaped holes 51 to reduce the impact force on the adjusting rod 5 when the top cover 3 moves, playing a role in protecting the structure of the adjusting rod 5. It is worth mentioning that in this application, since the top cover 3 is made of lead material, it has a large momentum during the movement process. The elastic rubber layers 511 can effectively weaken the kinetic energy transfer effect of the guiding pins 6 on the adjusting rod 5 when the top cover 3 moves.
[0030] Referring to Figure 3 and Figure 4 , Furthermore, in order to avoid friction between the retaining rod 41 and the top cover 3 and extend the service life of the parts, the retaining rod 41 is designed with a pulley 413 rotatably embedded in the vertical direction at one end far away from the hinge position. The diameter of the pulley 413 is greater than the width of the retaining rod 41 in the horizontal direction to ensure that when the retaining rod 41 is in close contact with the top cover 3, the pulley 413 can change the abutting connection between the retaining rod 41 and the top cover 3 into a rolling connection, making the operation of opening the top cover 3 smoother and more convenient.
[0031] Referring to Figure 3 and Figure 4 , A limiting structure 7 for controlling the distance between the guiding pin 6 and the end of the kidney-shaped hole 51 on the side far away from the connecting pin 52 is provided on the guiding pin 6. The limiting structure 7 specifically includes a limiting plate 71 sleeved on one end of the guiding pin 6 and a positioning pin 72 integrally connected to the bottom of the end of the limiting plate 71 far away from the guiding pin 6. At the same time, a spring 73 is movably sleeved between the limiting plate 71 and the retaining rod 41, and a pressing member 74 for pressing the limiting plate 71 is also threadedly sleeved on the top of the guiding pin 6.
[0032] When it is necessary to limit the rotation amplitude of the top cover 3, the limiting plate 71 can be moved downward by driving the pressing member 74, and then the positioning pin 72 enters the kidney-shaped hole 51. At this time, the positioning pin 72 abuts against the inner side wall of the end of the kidney-shaped hole 51 on the adjusting rod 5 prior to the guiding pin 6, thereby achieving the limiting effect on the position of the guiding pin 6.
[0033] The present application does not impose any specific restrictions on the spun part 74 , and any parts that meet the use and assembly requirements of the present application may be included in the protection scope of the present application.
[0034] Reference Figure 3 and Figure 4 Furthermore, an adjustment structure 8 for adjusting the horizontal distance between the positioning pin 72 and the guide pin 6 is provided on the spinning part 74. The adjustment structure 8 specifically includes an adjustment worm wheel 81 movably sleeved on the guide pin 6, a worm 82 rotatably arranged on the top of the limit plate 71 in the transverse direction, and a positioning worm wheel 83 fixedly sleeved on the positioning pin 72. Among them, the adjustment worm wheel 81 is rotationally connected with the limit plate 71, and the adjustment worm wheel 81 and the positioning worm wheel 83 are respectively transmission-connected to the two ends of the worm 82 along the axial direction. When the adjustment worm wheel 81 is driven to rotate, the positioning worm wheel 83 can also move accordingly.
[0035] The limiting plate 71 is provided with a strip groove 711 along the length direction, and an H wheel 712 is slidably mounted in the strip groove 711. The H wheel 712 is sleeved on the positioning pin 72, and the top is fixedly connected to the positioning worm wheel 83. When the adjusting worm wheel 81 rotates, the H wheel 712 slides in the strip groove 711 driven by the positioning worm wheel 83, so that the distance between the positioning pin 72 and the guide pin 6 is pulled closer or farther.
[0036] Reference Figure 3 and Figure 4 Furthermore, a slide groove 122 is provided on the upper edge of the fixed block 12 vertically on the side close to the body 1, and two sliders 1221 are symmetrically slidably arranged inside the slide groove 122, and the hinged ends of the two blocking rods 41 are respectively hinged to the two sliders 1221. The slide groove 122 is provided along the length direction of the fixed block 12, and a tension spring 1222 is fixedly installed in the middle of the extension direction of the fixed block 12 in the slide groove 122, and the two ends of the tension spring 1222 are respectively connected to the two sliders 1221.
[0037] This structure can ensure that the blocking rod 41 is always in close contact with the side wall of the top cover 3, so as to ensure that the blocking rod 41 and the top cover 3 do not collide frequently and the blocking rod 41 can reset itself. At the same time, when adapting to detectors of different sizes, this structure can meet the use requirements and has high practical applicability.
[0038] In the present application, the fixing block 12 and the connecting pin 52 are both detachably connected to the body 1 .
[0039] The implementation principle of a stone radioactivity detector in the embodiment of the present application is: During the process of opening the top cover 3 of the detector, the shift lever 41 always clings to the side wall of the top cover 3, and during this process, the guide pin 6 on the shift lever 41 slides in the waist-shaped hole 51 on the adjusting lever 5. When the guide pin 6 slides to the end of the waist-shaped hole 51 away from the connecting pin 52, its movement is restricted. At this time, since the shift lever 41 abuts against the side wall of the top cover 3, the further rotation of the top cover 3 will be restricted.
[0040] When it is necessary to adjust the rotation amplitude of the top cover 3, it only needs to adjust the spinning part 74 to move the limit plate 71 downward until the positioning pin 72 enters the waist-shaped hole 51. In this situation, the positioning pin 72 will touch the inner side wall of the end of the waist-shaped hole 51 prior to the guide pin 6, thereby reducing the angular range within which the top cover 3 can rotate.
[0041] Meanwhile, by rotating the adjusting worm gear 81, the distance between the guide pin 6 and the positioning pin 72 can also be adjusted through the linkage among the adjusting worm gear 81, the worm 82, and the positioning worm gear 83, thereby indirectly changing the angular range of rotation of the top cover 3.
[0042] The above are all preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.
Claims
1. A stone radioactive detector, comprising a cylindrical body (1) and a bracket (2) installed below the body (1). One side of the top end of the body (1) is integrally connected with a fixing block (12). Two hinge columns (121) are integrally and symmetrically connected to the fixing block (12). A semi-circular top cover (3) for closing the top of the body (1) is hinged on each of the two hinge columns (121). It is characterized in that: A positioning block (4) is provided at the top of the body (1), and two blocking rods (41) are symmetrically hinged on the inner side of the positioning block (4), and the ends of the two blocking rods (41) away from the positioning block (4) are respectively in close contact with the outer sides of the two top covers (3), and through holes (411) are provided through the two blocking rods (41) along the middle of the vertical direction, and adjustment rods (5) are respectively slidably provided in the two through holes (411), and waist-shaped holes (51) are provided through the two adjustment rods (5), and a pin hole (412) connected to the through hole (411) is provided on the top side of the blocking rod (41), and a guide pin (6) whose bottom end extends into the waist-shaped hole (51) is inserted into the pin hole (412), and the ends of the two adjustment rods (5) close to each other are commonly connected with a connecting pin (52).
2. The radioactive detector for stone materials according to claim 1, wherein: The guide pin (6) is provided with a limiting structure (7) for controlling the distance in the horizontal direction between the guide pin (6) and one end of the waist-shaped hole (51) away from the connecting pin (52). The limiting structure (7) comprises a limiting plate (71) with one end sleeved on the guide pin (6) and a positioning pin (72) integrally connected to the bottom side of the end of the limiting plate (71) away from the guide pin (6). A spring (73) is sleeved on the guide pin (6) between the limiting plate (71) and the blocking rod (41). A spinning component (74) for pressing the limiting plate (71) is threadedly connected to the top of the guide pin (6). The positioning pin (72) is located in the waist-shaped hole (51), and an adjusting structure (8) for adjusting the horizontal distance between the positioning pin (72) and the guide pin (6) is provided on the spinning component (74).
3. The radioactive detector for stone materials according to claim 2, characterized in that: The adjustment structure (8) comprises an adjustment worm wheel (81) movably sleeved on the guide pin (6) and rotatably connected to the limit plate (71), a worm (82) rotatably arranged on the top of the limit plate (71) in the transverse direction, and a positioning worm wheel (83) fixedly sleeved on the positioning pin (72), the positioning worm wheel (83) and the adjustment worm wheel (81) are respectively transmission-connected to the two ends of the worm (82) along the axis, the limit plate (71) is provided with a strip groove (711) penetrating therethrough, an H wheel (712) is slidably clamped in the strip groove (711), and the H wheel (712) is sleeved on the positioning pin (72).
4. The radioactive detector for stone materials according to claim 3, wherein: A sliding groove (122) is provided on one side of the fixed block (12) close to the body (1), two sliding blocks (1221) are symmetrically slidably arranged in the sliding groove (122), the two blocking rods (41) are respectively hinged to the two sliding blocks (1221), a tension spring (1222) is connected between the two sliding blocks (1221), and the tension spring (1222) is fixedly arranged in the middle of the sliding groove (122).
5. A stone radioactive detector according to claim 1, characterized in that: The two adjusting rods (5) are both arc-shaped structures, and the two waist-shaped holes (51) respectively provided on the two adjusting rods (5) are both arc-shaped structures with the same curvature as the adjusting rods (5).
6. The radioactive detector for stone materials according to claim 5, wherein: Rotating collar sleeves (61) are rotatably sleeved on both of the two guide pins (6), and the rotating collar sleeves (61) are in rolling abutment with the side walls of the kidney-shaped holes (51).
7. A stone radioactive detector according to claim 6, characterized in that: An elastic rubber layer (511) is laid on the side wall of one end of the kidney-shaped hole (51) away from the connecting pin (52).
8. A stone radioactive detector according to claim 1, characterized in that: Pulleys (413) are rotatably embedded in the ends of the two stop rods (41) away from the fixed block (12) in the vertical direction. The diameter of the pulleys (413) is greater than the lateral dimension of the stop rods (41), and the pulleys (413) are always in abutment with the side wall of the top cover (3).