Photomultiplier tube fixing frame

Abstract

The utility model relates to the technical field of photomultipliers, and discloses a photomultiplier fixing frame which comprises a fixing bottom plate, an angle adjusting assembly and an adjusting disc, the angle adjusting assembly is installed at the top end of the fixing bottom plate, and the adjusting disc is installed on the fixing bottom plate. The adjusting disc is installed at the top end of the fixed bottom plate in an angle-adjustable mode through an angle adjusting assembly, and a bearing disc is fixed to the top end of the adjusting disc. According to the photomultiplier tube fixing frame, five photomultiplier tube bodies can be installed on the fixing frame, the fixing frame can be installed according to actual conditions, the fixing frame is very flexible and adapts to different use environments, the photomultiplier tube bodies on the corresponding second lifting discs can be moved upwards or downwards, the photomultiplier tube bodies are moved out of the tube cavities to be used, and the photomultiplier tube fixing frame is convenient to use. The first rotating shaft, the second rotating shaft, the rotating block and the rotating column are matched, so that the adjusting disc and the fixed bottom plate rotate in the transverse direction or the longitudinal direction.

Description

Technical Field

[0001] The utility model relates to the technical field of photomultiplier tubes, and particularly relates to a photomultiplier tube fixing bracket. Background Art

[0002] As a high-gain and high-sensitivity photon detector, the photomultiplier tube plays a crucial role in multiple fields such as nuclear physics experiments, spectral analysis, biomedical research, etc. Its working principle is to convert incident photons into photoelectrons through a photocathode, and then through the multiplication effect of a series of dynodes, and finally collect the amplified electron pulses on the anode to achieve the detection and conversion of optical signals.

[0003] Regarding the existing related technologies, the inventor believes that there are often the following defects: The designs of many photomultiplier tube fixing brackets on the current market only support the installation of a single photomultiplier tube. This singularity limits the flexibility of system expansion and cannot meet the requirements for the simultaneous use of multiple photomultiplier tubes in different experiments or applications. At the same time, the fixing bracket is often greatly restricted when adjusting the angle of the photomultiplier tube, unable to provide sufficient adjustment range and accuracy, resulting in difficulties in precise calibration and positioning, and affecting the accuracy and reliability of measurement results.

[0004] Therefore, we propose a photomultiplier tube fixing bracket. Summary of the Utility Model

[0005] In view of the above problems in the existing technology that only support the installation of a single photomultiplier tube, this singularity limits the flexibility of system expansion and cannot meet the requirements for the simultaneous use of multiple photomultiplier tubes in different experiments or applications. At the same time, the fixing bracket is often greatly restricted when adjusting the angle of the photomultiplier tube and cannot provide sufficient adjustment range and accuracy, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a photomultiplier tube fixing bracket, and its purpose is to: support the installation of multiple photomultiplier tubes to meet the requirements of different experiments or applications, and the fixing bracket has the function of adjusting the angle of the photomultiplier tube to ensure accurate positioning and calibration under different experimental conditions.

[0007] To solve the above technical problems, the present utility model provides the following technical solution: A photomultiplier tube fixing bracket, comprising a fixed bottom plate, an angle adjusting assembly and an adjusting disc. The angle adjusting assembly is installed at the top of the fixed bottom plate, and the adjusting disc is installed on the top of the fixed bottom plate in an angle-adjustable manner through the angle adjusting assembly. A bearing disc is fixed to the top of the adjusting disc, and a circle of fixing columns is fixed between the opposite surfaces of the adjusting disc and the bearing disc facing the outer edge. A tube partition is welded to the top of the bearing disc, and five tube cavities are formed between the bearing disc and the tube partition. A vertically lifting lifting disc two is installed inside the tube cavity. A tube seat is fixed to the top of the lifting disc two, and a photomultiplier tube body is installed on the tube seat;

[0008] A lifting hole is opened at the center of the top of the tube partition. A cover plate for blocking the lifting hole is installed on the top of the tube partition. A lifting assembly is installed at the center of the top of the adjusting disc, and the movable end of the lifting assembly is located inside the lifting hole and drives the photomultiplier tube body to lift through the lifting disc two.

[0009] As a preferred scheme of the photomultiplier tube fixing bracket of the present utility model, wherein: Five lifting channels are opened on the tube partition, and the tube cavity is communicated with the lifting hole through the lifting channel. A lifting disc one is installed in the lifting hole in a vertically limited sliding manner. A lead screw is installed on the lifting disc one through a threaded hole opened at its center. A servo motor for driving the lead screw to rotate is fixed at the center of the top of the adjusting disc. Five electromagnets two are installed on the peripheral surface of the lifting disc one at equal intervals. A magnet block magnetically attracted to the electromagnet two is fixed to the peripheral surface of the lifting disc two and facing the side of the lifting disc one.

[0010] As a preferred scheme of the photomultiplier tube fixing bracket of the present utility model, wherein: Five limiting sliders are welded on the peripheral surface of the lifting disc one at equal intervals, and the electromagnet two is located between two adjacent limiting sliders. Five limiting chutes are opened on the top of the tube partition at equal intervals and are all communicated with the inside of the lifting hole, and the limiting sliders slide vertically inside the limiting chutes.

[0011] As a preferred scheme of the photomultiplier tube fixing bracket of the present utility model, wherein: The angle adjusting assembly includes a first rotating shaft rotatably installed at the middle of the bottom of the adjusting disc through a bearing, and a second rotating shaft rotatably installed at the middle of the top of the fixed bottom plate through a bracket. A rotating column is sleeved on the outer wall of the second rotating shaft. A rotating block is rotatably installed on the outer wall of the first rotating shaft, and the rotating block is fixedly connected with the rotating column.

[0012] As a preferred scheme of the photomultiplier tube fixing bracket of the present utility model, wherein: A circle of magnet discs is installed on the outer edge of the bottom of the adjusting disc. An adjusting body is installed on the outer edge of the top of the fixed bottom plate and directly below the magnet disc.

[0013] As a preferred solution of a photomultiplier tube fixing bracket according to the present utility model, wherein: the adjusting body includes an electric telescopic rod fixed to the top of the fixed bottom plate, and an electromagnet I is installed at the movable end of the electric telescopic rod, and the opposite surfaces of the electromagnet I and the magnet disk are in a magnetically attracting state.

[0014] As a preferred solution of a photomultiplier tube fixing bracket according to the present utility model, wherein: a connecting disk is installed at the movable end of the electric telescopic rod, a rubber block is fixed to the movable end of the connecting disk, an installation disk is installed on the top of the rubber block, and the electromagnet I is fixed to the top of the installation disk.

[0015] The beneficial effects of the present utility model:

[0016] 1. For the present utility model, this fixing bracket can install a total of five photomultiplier tube bodies. The five photomultiplier tube bodies can be of the same type or different types, and can be installed according to the actual situation, which is very flexible and adaptable to different use environments. And under the magnetic adsorption effect of the electromagnet II and the magnet block, the lifting disk II moves up and down with the lifting disk I, so that the photomultiplier tube body on the corresponding lifting disk II can be moved up or down, and the photomultiplier tube body can be moved out from the inside of the tube cavity for use.

[0017] 2. For the present utility model, when several electromagnets II are in the on state, they can simultaneously drive the corresponding number of photomultiplier tube bodies to move up and down. That is, if five electromagnets II are turned on simultaneously, five photomultiplier tube bodies can be moved simultaneously, and the five photomultiplier tube bodies share one lifting component for lifting, reducing the manufacturing and use costs.

[0018] 3. For the present utility model, with the cooperation of the rotating shaft I, the rotating shaft II, the rotating block and the rotating column, the adjusting disk rotates horizontally or vertically with respect to the fixed bottom plate. Since a circle of adjusting bodies and the magnet disk are installed, when it is required to tilt the adjusting disk in a certain direction, the corresponding adjusting body at the corresponding position is started to make it magnetically adsorbed with the magnet disk, and under the telescopic action of the adjusting body, the angle of the adjusting disk is adjusted and tilted, and the angle of the photomultiplier tube body protruding upward can be adjusted to ensure accurate positioning under different experimental conditions to meet the requirements of different experiments or applications. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a fixing bracket for a photomultiplier tube of the present utility model.

[0021] Figure 2 This is a schematic diagram of the structure of an angle adjustment component of a fixing bracket for a photomultiplier tube of the present utility model.

[0022] Figure 3 This is a schematic diagram of the structure of an adjustment main body of a fixing bracket for a photomultiplier tube of the present utility model.

[0023] Figure 4 This is a schematic diagram of the internal top view structure of a lifting hole of a fixing bracket for a photomultiplier tube of the present utility model.

[0024] Figure 5 This is a schematic diagram of the top view structure of a first lifting plate and a second lifting plate of a fixing bracket for a photomultiplier tube of the present utility model.

[0025] Explanation of reference numerals:

[0026] 1. Fixed bottom plate; 2. Angle adjustment component; 21. First rotating shaft; 22. Second rotating shaft; 23. Rotating block; 24. Rotating column; 25. Magnet disk; 26. Adjustment main body; 261. Electric telescopic rod; 262. Connecting disk; 263. Rubber block; 264. Mounting disk; 265. First electromagnet; 3. Adjustment disk; 4. Carrying disk; 41. Fixed column; 5. Lifting component; 51. First lifting plate; 52. Limit sliding block; 53. Lead screw; 54. Second electromagnet; 55. Magnet block; 6. Tube partition; 61. Lifting channel; 62. Cover plate; 63. Lifting hole; 64. Limit sliding groove; 7. Photomultiplier tube body; 71. Second lifting plate; 72. Tube base. Detailed implementation manners

[0027] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present utility model with reference to the accompanying drawings of the specification.

[0028] Embodiment 1

[0029] Refer to Figures 1-5, which is the first embodiment of the present utility model, provides a fixing bracket for a photomultiplier tube. Such a fixing bracket for a photomultiplier tube includes a fixing base plate 1, an angle adjustment assembly 2 and an adjustment disc 3. The angle adjustment assembly 2 is installed at the top of the fixing base plate 1, and the adjustment disc 3 is installed on the top of the fixing base plate 1 in an angle-adjustable manner through the angle adjustment assembly 2. A bearing disc 4 is fixed to the top of the adjustment disc 3, and a circle of fixing columns 41 is fixed between the opposite surfaces of the adjustment disc 3 and the outer edge of the bearing disc 4. A tube partition 6 is welded to the top of the bearing disc 4, and five tube cavities are formed between the bearing disc 4 and the tube partition 6. A total of five photomultiplier tube bodies 7 can be installed on this fixing bracket. The five photomultiplier tube bodies 7 can be of the same type or different types, and can be installed according to the actual situation, which is very flexible and adapts to different use environments. An ascending and descending lifting disc two 71 is installed inside the tube cavity, and the lifting disc two 71 is vertically and limit slidably installed inside the tube cavity through a guide rail and a slider. A tube seat 72 is fixed to the top of the lifting disc two 71, and a photomultiplier tube body 7 is installed on the tube seat 72;

[0030] An ascending and descending hole 63 is opened at the center of the top of the tube partition 6. A cover plate 62 for blocking the ascending and descending hole 63 is installed on the top of the tube partition 6. An ascending and descending assembly 5 is installed at the center of the top of the adjustment disc 3, and the movable end of the ascending and descending assembly 5 is located inside the ascending and descending hole 63 and drives the photomultiplier tube body 7 to ascend and descend through the lifting disc two 71.

[0031] Five ascending and descending channels 61 are opened on the tube partition 6, and the tube cavity is communicated with the ascending and descending hole 63 through the ascending and descending channels 61. An ascending and descending disc one 51 is vertically and limit slidably installed inside the ascending and descending hole 63. The ascending and descending disc one 51 is threadedly installed with a lead screw 53 through a threaded hole opened at its center, and the bottom end of the lead screw 53 is located between the opposite surfaces of the adjustment disc 3 and the bearing disc 4. A servo motor for driving the lead screw 53 to rotate is fixed to the center of the top of the adjustment disc 3, and the driving end of the servo motor is connected to the bottom end of the lead screw 53. Five electromagnets two 54 are installed at equal intervals on the peripheral surface of the ascending and descending disc one 51. A magnet block 55 magnetically attracted to the electromagnet two 54 is fixed to the side of the peripheral surface of the ascending and descending disc two 71 facing the ascending and descending disc one 51. Under the magnetic adsorption action of the electromagnet two 54 and the magnet block 55, the ascending and descending disc two 71 moves up and down with the ascending and descending disc one 51, so that the photomultiplier tube body 7 on the corresponding ascending and descending disc two 71 can be moved up or down, and the photomultiplier tube body 7 can be moved out of the tube cavity for use. When several electromagnets two 54 are in the on state, the corresponding number of photomultiplier tube bodies 7 can be driven to move up and down at the same time. That is, if the five electromagnets two 54 are turned on at the same time, the five photomultiplier tube bodies 7 can be moved at the same time. Then the five photomultiplier tube bodies 7 share one ascending and descending assembly 5 for ascending and descending, reducing the manufacturing and use costs.

[0032] Five limiting sliders 52 are welded at equal intervals on the peripheral surface of the lifting disc one 51, and the electromagnet two 54 is located between two adjacent limiting sliders 52. Five limiting chutes 64 that are all communicated with the inside of the lifting hole 63 are provided at equal intervals at the top of the pipe partition 6, and the limiting sliders 52 slide vertically inside the limiting chutes 64.

[0033] The angle adjustment assembly 2 includes a first rotating shaft 21 rotatably installed in the middle of the bottom of the adjustment disc 3 through a bearing, and a second rotating shaft 22 rotatably installed in the middle of the top of the fixed bottom plate 1 through a bracket. A rotating column 24 is sleeved on the outer wall of the second rotating shaft 22, and a rotating block 23 is rotatably installed on the outer wall of the first rotating shaft 21, and the rotating block 23 is fixedly connected to the rotating column 24.

[0034] During use, five pipe cavities are formed between the bearing disc 4 and the pipe partition 6, and a photomultiplier tube body 7 is correspondingly installed inside each pipe cavity;

[0035] When in use, first select the required photomultiplier tube body 7, and then turn on the electromagnet two 54 corresponding to the photomultiplier tube body 7. The electromagnet two 54 generates magnetism and magnetically adsorbs with the magnet block 55. At this time, the lifting disc two 71 can move with the lifting disc one 51. The servo motor drives the lead screw 53 to rotate. Under the vertical transmission action of the lead screw 53 and the threaded hole on the lifting disc one 51, the lifting disc one 51 can be driven to move vertically up and down. And under the magnetic adsorption action of the electromagnet two 54 and the magnet block 55, the lifting disc two 71 moves up and down with the lifting disc one 51, so that the photomultiplier tube body 7 on the corresponding lifting disc two 71 can be moved up or down, and the photomultiplier tube body 7 can be moved out of the pipe cavity for use.

[0036] Embodiment 2

[0037] Refer to Figures 1-5 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is:

[0038] A ring of magnet discs 25 is installed on the outer edge of the bottom of the adjustment disc 3, and an adjustment main body 26 is installed on the outer edge of the top of the fixed bottom plate 1 and directly below the magnet discs 25.

[0039] The adjustment main body 26 includes an electric agricultural telescopic rod 261 fixed to the top of the fixed base plate 1. An electromagnet 265 is installed at the movable end of the electric agricultural telescopic rod 261, and the opposite surfaces of the electromagnet 265 and the magnet disk 25 are in a magnetically attractive state. With the cooperation of the first rotating shaft 21, the second rotating shaft 22, the rotating block 23 and the rotating column 24, the adjustment disk 3 and the fixed base plate 1 can rotate horizontally or vertically. Due to the installation of a circle of adjustment main bodies 26 and the magnet disk 25, when it is required to tilt the adjustment disk 3 in a certain direction, the corresponding adjustment main body 26 at the corresponding position is activated to make it magnetically adsorbed to the magnet disk 25, and under the telescopic action of the adjustment main body 26, the angle of the adjustment disk 3 can be adjusted and tilted, so as to adjust the angle of the upward protruding photomultiplier tube body 7, ensuring accurate positioning under different experimental conditions to meet the requirements of different experiments or applications.

[0040] A connecting disk 262 is installed at the movable end of the electric agricultural telescopic rod 261. A rubber block 263 is fixed to the movable end of the connecting disk 262. An installation disk 264 is installed on the top of the rubber block 263, and the electromagnet 265 is fixed to the top of the installation disk 264. A rubber block 263 is installed between the installation disk 264 and the connecting disk 262. When the adjustment disk 3 rotates, the rubber block 263 deforms, ensuring the fit between the electromagnet 265 and the magnet disk 25, and further ensuring the tightness of the magnetic adsorption between the electromagnet 265 and the magnet disk 25.

[0041] During the use process, with the cooperation of the first rotating shaft 21, the second rotating shaft 22, the rotating block 23 and the rotating column 24, the adjustment disk 3 and the fixed base plate 1 can rotate horizontally or vertically;

[0042] Due to the installation of a circle of adjustment main bodies 26 and the magnet disk 25, when it is required to tilt the adjustment disk 3 in a certain direction, the corresponding adjustment main body 26 at the corresponding position is activated to make it magnetically adsorbed to the magnet disk 25, and under the telescopic action of the adjustment main body 26, the angle of the adjustment disk 3 can be adjusted and tilted, so as to adjust the angle of the upward protruding photomultiplier tube body 7;

[0043] The process of adjusting the angle of the adjustment disk 3 is as follows:

[0044] The electric agricultural telescopic rod 261 first extends to make the electromagnet 265 contact with the magnet disk 25, and the electromagnet 265 is turned on. The electromagnet 265 and the magnet disk 25 are magnetically adsorbed and fixed. At this time, the telescopic movement of the electric agricultural telescopic rod 261 can drive the adjustment of the tilt angle of the adjustment disk 3.

[0045] The remaining structure is the same as that of Embodiment 1.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A photomultiplier tube fixing bracket, characterized in that: It includes a fixed base plate (1), an angle adjustment component (2) and an adjustment disc (3). The angle adjustment component (2) is installed at the top of the fixed base plate (1), and the adjustment disc (3) is installed at the top of the fixed base plate (1) in an angle-adjustable manner through the angle adjustment component (2). A bearing plate (4) is fixed to the top of the adjustment disc (3), and a circle of fixed columns (41) is fixed between the opposite surfaces of the adjustment disc (3) and the outer edge of the bearing plate (4). A pipe partition plate (6) is welded to the top of the bearing plate (4), and five pipe cavities are formed between the bearing plate (4) and the pipe partition plate (6). A vertically lifting lifting disc two (71) is installed inside the pipe cavity. A pipe seat (72) is fixed to the top of the lifting disc two (71), and a photomultiplier tube body (7) is installed on the pipe seat (72). A lifting hole (63) is opened at the center of the top of the pipe partition plate (6). A cover plate (62) for blocking the lifting hole (63) is installed on the top of the pipe partition plate (6). A lifting component (5) is installed at the center of the top of the adjustment disc (3), and the movable end of the lifting component (5) is located inside the lifting hole (63) and drives the photomultiplier tube body (7) to lift through the lifting disc two (71).

2. The photomultiplier tube fixing bracket according to claim 1, characterized in that: Five lifting channels (61) are opened on the pipe partition plate (6), and the pipe cavity is communicated with the lifting hole (63) through the lifting channel (61). A lifting disc one (51) is vertically and limit-slidingly installed inside the lifting hole (63). A lead screw (53) is installed on the lifting disc one (51) through a threaded hole opened at its center. A servo motor for driving the lead screw (53) to rotate is fixed at the center of the top of the adjustment disc (3). Five electromagnets two (54) are installed on the peripheral surface of the lifting disc one (51) at equal intervals. A magnet block (55) magnetically attracted to the electromagnet two (54) is fixed to the side of the peripheral surface of the lifting disc two (71) facing the lifting disc one (51).

3. The photomultiplier tube fixing bracket according to claim 2, characterized in that: Five limit sliders (52) are welded to the peripheral surface of the lifting disc one (51) at equal intervals, and the electromagnet two (54) is located between two adjacent limit sliders (52). Five limit sliding grooves (64) all communicated with the inside of the lifting hole (63) are opened on the top of the pipe partition plate (6) at equal intervals, and the limit sliders (52) slide vertically inside the limit sliding grooves (64).

4. The photomultiplier tube fixing bracket according to claim 3, wherein: The angle adjustment component (2) includes a rotating shaft one (21) rotatably installed in the middle of the bottom of the adjustment disc (3) through a bearing, and a rotating shaft two (22) rotatably installed in the middle of the top of the fixed base plate (1) through a bracket. A rotating column (24) is sleeved on the outer wall of the rotating shaft two (22). A rotating block (23) is rotatably installed on the outer wall of the rotating shaft one (21), and the rotating block (23) is fixedly connected with the rotating column (24).

5. The photomultiplier tube fixing bracket according to claim 4, wherein: A circle of magnet discs (25) is installed on the outer edge of the bottom of the adjustment disc (3). An adjustment main body (26) is installed on the outer edge of the top of the fixed base plate (1) and directly below the magnet disc (25).

6. The photomultiplier tube fixing bracket according to claim 5, wherein: The adjustment body (26) includes an electric agricultural telescopic rod (261) fixed to the top of the fixed bottom plate (1). An electromagnet I (265) is installed at the movable end of the electric agricultural telescopic rod (261), and the opposite surfaces of the electromagnet I (265) and the magnet disk (25) are in a magnetically attracting state.

7. The photomultiplier tube fixing bracket according to claim 6, characterized in that: A connection disk (262) is installed at the movable end of the electric agricultural telescopic rod (261). A rubber block (263) is fixed to the movable end of the connection disk (262). An installation disk (264) is installed on the top of the rubber block (263), and the electromagnet I (265) is fixed to the top of the installation disk (264).

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