Radiation thermometer verification calibration device and method of use thereof

Abstract

This invention discloses a calibration device for radiation thermometers and its usage method. The device includes a base with a movable seat on top. The base has several clamping holes for holding a temperature measuring gun, and the movable seat is located on one side of the clamping holes. Several telescopic cylinders are rotatably connected to the base, and telescopic rods are threaded into the internal parts of the telescopic cylinders. A slider is fixedly connected to each telescopic rod, and the slider is slidably connected to the base. The telescopic rods are located on one side of the clamping holes. This device is easy to operate, can calibrate multiple radiation thermometers, has a high degree of automation, and offers high calibration efficiency.

Description

Technical Field

[0001] This invention relates to the field of calibration technology, specifically to a calibration device for a radiation thermometer and its usage method. Background Technology

[0002] A radiation thermometer is a non-contact measuring device that measures the surface temperature of an object by detecting radiation emitted from its surface. Commonly used temperature measuring devices include temperature guns. Radiation thermometers have advantages such as fast response and high accuracy. To ensure the accuracy of the measurement results, radiation thermometers usually need to be calibrated every six months.

[0003] Taking a temperature gun as an example, when calibrating a temperature gun, a standard radiation thermometer is usually used as a control group. The temperature gun is manually pressed to measure the temperature of the measuring block, and the result is compared with the standard temperature gun to verify its accuracy. For testing personnel, the number of radiation thermometers that need to be tested every day is large, which brings a heavy workload to the testing personnel and seriously affects the efficiency of calibration. Summary of the Invention

[0004] To address the problems existing in the prior art, a radiation thermometer calibration device and its usage method are provided.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] This invention proposes a calibration device for a radiation thermometer, comprising a base, a movable seat above the base, and a plurality of clamping holes for placing a temperature measuring gun on the base. The movable seat is located on one side of the clamping holes. A plurality of telescopic cylinders are rotatably connected to the base, and telescopic rods are threadedly connected to the telescopic cylinders. A slider is fixedly connected to the telescopic rod, and the slider is slidably connected to the base. The telescopic rods are located on one side of the clamping holes.

[0007] Preferably, the telescopic cylinder is fixedly connected to a connecting rod, the connecting rod is fixedly sleeved with a second gear, and the connecting rod is rotatably connected to the base.

[0008] Preferably, a spiral spring is sleeved on the connecting rod, with one end of the spiral spring connected to the connecting rod and the other end of the spiral spring connected to the base.

[0009] Preferably, the number of telescopic cylinders is the same as the number of clamping holes.

[0010] Preferably, the movable seat is fixedly connected to a support rod, the support rod is rotatably connected to a walking rod, and the walking rod is fixedly fitted with a walking wheel and a first gear.

[0011] Preferably, the movable base is fixedly connected to a motor, the motor is connected to a toothed gear, the upper and lower ends of the toothed gear mesh with a second gear and a first gear respectively, and the motor is connected to a controller.

[0012] Preferably, the arc length through which the toothed gear drives the walking wheel to rotate is equal to the distance between adjacent clamping holes, the base is provided with a sliding groove, and the walking wheel is rolled within the sliding groove.

[0013] Preferably, the temperature gun includes a handle, the handle is connected to a temperature measuring head and a button, the button is located on one side of the telescopic rod, and the temperature measuring head is located on one side of the temperature measuring block.

[0014] Preferably, the temperature measuring block is connected to a heating mechanism, a spacer is provided between several clamping holes, the spacer is fixedly connected to the base, and the heating mechanism is connected to the controller.

[0015] This invention also proposes a method for using a radiation thermometer calibration device, which includes the following steps:

[0016] S1: Place several temperature guns into their respective clamping holes, then the controller starts the motor. The controller heats the temperature block through the heating mechanism, and the motor drives the toothed gear to rotate.

[0017] S2: The toothed gear first meshes with the second gear, driving the second gear and the telescopic cylinder to rotate. The telescopic cylinder drives the telescopic rod to move, causing the telescopic rod to move closer to the button.

[0018] S3: As the telescopic rod moves, it drives the button to move, which makes the temperature measuring head work, thereby measuring the temperature of the temperature measuring block;

[0019] S4: As the motor drives the toothed gear to continue rotating, when the toothed gear and the second gear disengage, the telescopic cylinder is reset under the action of the spiral spring, and the telescopic cylinder drives the telescopic rod to reset.

[0020] S5: As the missing tooth gear continues to rotate, after a time interval T, the missing tooth gear meshes with the first gear. The missing tooth gear drives the first gear and the traveling wheel to rotate. The traveling wheel rolls in the groove, thereby driving the moving seat to move and moving the temperature measuring block to the side of the next temperature measuring gun.

[0021] S6: As the missing tooth gear continues to rotate, the missing tooth gear meshes with the next second gear, repeating S2-S5 until the calibration of all temperature guns is completed.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This invention is equipped with a rotatable telescopic cylinder. When the telescopic cylinder rotates, it can drive the telescopic rod to move. After the telescopic rod contacts the button of the temperature measuring gun, the button can be pressed to realize the automatic pressing operation of the temperature measuring gun. At the same time, after the temperature measurement is completed, the moving seat moves to perform temperature measurement on the next temperature measuring gun. It is easy to operate and can perform verification and calibration work on multiple temperature measuring guns. It has a high degree of automation and high verification and calibration efficiency.

[0024] 2. This invention is equipped with a toothed gear. When the toothed gear and the second gear mesh, the telescopic cylinder can be driven to rotate, causing the telescopic rod to move. When the toothed gear and the second gear disengage, the telescopic cylinder can be driven to reverse under the action of the spiral spring, realizing the reset of the telescopic rod. At this time, the toothed gear has not yet meshed with the first gear. Only after a time T will the toothed gear mesh with the first gear, thus providing sufficient time for the temperature measuring gun to perform the temperature measurement work, facilitating the temperature measurement work and improving the accuracy of temperature measurement. Attached Figure Description

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is the overall top view of the present invention;

[0027] Figure 2 This is the overall front view of the present invention;

[0028] Figure 3 This is a schematic diagram of the temperature measuring gun structure in this invention;

[0029] Figure 4 yes Figure 2 Side view of the missing tooth gear section.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Base; 2. Clamping hole; 3. Spare plate; 4. Slide groove; 5. Temperature measuring block; 6. Moving seat; 7. Support rod; 8. Traveling wheel; 9. Traveling rod; 10. Motor; 11. First gear; 12. Gear with missing tooth; 13. Handle; 14. Button; 15. Temperature measuring head; 16. Slider; 17. Telescopic rod; 18. Telescopic cylinder; 19. Second gear; 20. Scroll spring. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figure 1-4As shown in the figure, this embodiment proposes a radiation thermometer calibration device, including a base 1, a movable seat 6 is provided above the base 1, a gap is left between the movable seat 6 and the base 1, the base 1 has a plurality of clamping holes 2 for placing the temperature measuring gun, and the movable seat 6 is located on one side of the clamping holes 2.

[0034] There is one movable base 6. The size of the clamping hole 2 is adapted to the size of the temperature measuring gun. Several clamping holes 2 can be provided to improve the efficiency of the test. The temperature measuring gun can be clamped through the clamping hole 2, which facilitates the verification and calibration work.

[0035] The base 1 is rotatably connected to several telescopic cylinders 18. The telescopic cylinders 18 are internally threaded with telescopic rods 17. The telescopic rods 17 are fixedly connected to sliders 16. The sliders 16 are slidably connected to the base 1. The telescopic rods 17 are located on one side of the clamping hole 2.

[0036] The slider 16 is disposed between the telescopic rod 17 and the base 1. The slider 16 is always in a sliding connection with the base 1, and the slider 16 can only slide in the horizontal direction. The slider 16 plays a limiting and guiding role for the movement of the telescopic rod 17, so that the telescopic rod 17 can only slide in the horizontal direction.

[0037] The number of telescopic cylinders 18 is the same as the number of clamping holes 2. Each clamping hole 2 corresponds to one telescopic cylinder 18. The telescopic cylinder 18 can only rotate, so that when the telescopic cylinder 18 rotates, it can drive the telescopic rod 17 to move, causing the telescopic rod 17 to move closer to or away from the temperature measuring gun.

[0038] The telescopic cylinder 18 is fixedly connected to a connecting rod, and the connecting rod is fixedly sleeved with a second gear 19. The connecting rod is rotatably connected to the base 1.

[0039] When the second gear 19 rotates, it can drive the connecting rod to rotate, which in turn drives the telescopic cylinder 18 to rotate.

[0040] A spiral spring 20 is fitted on the connecting rod. One end of the spiral spring 20 is connected to the connecting rod, and the other end of the spiral spring 20 is connected to the base 1.

[0041] The temperature gun includes a handle 13, which is connected to a temperature measuring head 15 and a button 14. The button 14 is located on one side of the telescopic rod 17, and the temperature measuring head 15 is located on one side of the temperature measuring block 5.

[0042] The spiral spring 20 is used for the reset of the connecting rod. In the initial state, under the action of the spiral spring 20, there is a sufficient gap between the telescopic rod 17 and the button 14 of the temperature measuring gun.

[0043] The movable seat 6 is fixedly connected to the support rod 7, the support rod 7 is rotatably connected to the walking rod 9, and the walking rod 9 is fixedly fitted with the walking wheel 8 and the first gear 11.

[0044] The base 1 has a groove 4, and the traveling wheel 8 is rolled in the groove 4. The traveling wheel 8 and the support rod 7 are both located in the groove 4. When the traveling wheel 8 rotates, it can drive the support rod 7 and the movable seat 6 to move. The bottom surface of the groove 4 has sufficient friction, so that when the traveling wheel 8 rotates, it can drive the support rod 7 to move.

[0045] The support rod 7 is set vertically, and the traveling rod 9 is set horizontally. There are two support rods 7 in total. One support rod 7 is fixedly fitted with two traveling wheels 8, and the other support rod 7 is fixedly fitted with two traveling wheels and a first gear 11. There are four traveling wheels 8 in total, which can provide good support for the support rod 7.

[0046] A motor 10 is fixedly connected to the movable base 6. The motor 10 is connected to a toothed gear 12. The upper and lower ends of the toothed gear 12 mesh with the second gear 19 and the first gear 11, respectively. The motor 10 is connected to a controller. The controller 10 controls the operation of the motor 10, which can drive the toothed gear 12 to rotate. The toothed gear 12 is located between the second gear 19 and the first gear 11.

[0047] The arc length through which the toothed gear 12 drives the traveling wheel 8 to rotate is equal to the distance between adjacent clamping holes 2, so that the distance that the temperature measuring block 5 moves each time is exactly the distance between adjacent temperature measuring guns, which facilitates the temperature measurement work of the next temperature measuring gun.

[0048] The temperature measuring block 5 is connected to a heating mechanism. A spacer plate 3 is provided between several clamping holes 2. The spacer plate 3 is fixedly connected to the base 1. The heating mechanism is connected to the controller. The spacer plate 3 serves to insulate against heat and prevent adjacent temperature measuring guns from affecting each other.

[0049] After the missing tooth gear 12 and the second gear 19 disengage, the missing tooth gear 12 will only mesh with the first gear 11 after a time T. The time T provides sufficient reaction time for the temperature measuring gun, which facilitates the temperature measuring gun to measure the temperature of the temperature measuring block 5, thereby increasing the sufficient verification and calibration time and improving the accuracy of verification and calibration.

[0050] This invention also proposes a method for using a radiation thermometer calibration device, which includes the aforementioned radiation thermometer calibration device, comprising the following steps:

[0051] S1: Place several temperature guns into the corresponding clamping holes 2, and then the controller controls the motor 10 to start. The controller heats the temperature measuring block 5 through the heating mechanism, and the motor 10 drives the toothed gear 12 to rotate.

[0052] S2: The toothed gear 12 first meshes with the second gear 19, driving the second gear 19 and the telescopic cylinder 18 to rotate. The telescopic cylinder 18 drives the telescopic rod 17 to move, causing the telescopic rod 17 to move closer to the button 14.

[0053] S3: As the telescopic rod 17 moves, the telescopic rod 17 drives the button 14 to move, causing the temperature measuring head 15 to work, thereby measuring the temperature of the temperature measuring block 5.

[0054] S4: As the motor 10 drives the toothed gear 12 to continue rotating, when the toothed gear 12 and the second gear 19 disengage, the telescopic cylinder 18 is reset under the action of the spiral spring 20, and the telescopic cylinder 18 drives the telescopic rod 17 to reset.

[0055] S5: As the missing tooth gear 12 continues to rotate, after a time interval T, the missing tooth gear 12 meshes with the first gear 11. The missing tooth gear 12 drives the first gear 11 and the traveling wheel 8 to rotate. The traveling wheel 8 rolls in the slide groove 4, thereby driving the moving seat 6 to move, so that the temperature measuring block 5 moves to the side of the next temperature measuring gun.

[0056] S6: As the missing tooth gear 12 continues to rotate, the missing tooth gear 12 meshes with the next second gear 19, repeating S2-S5 until the calibration of all temperature measuring guns is completed.

[0057] When the movable seat 6 moves to the other end of the slide 4, pull the movable seat 6 away from the temperature measuring gun. By manually pulling the movable seat 6 upward, a gap is left between the traveling wheel 8 and the bottom wall of the slide 4. By moving the movable seat 6, the movable seat 6 returns to its initial position, which is convenient for the next round of temperature measurement.

[0058] It should be noted that when the telescopic cylinder 18 rotates, it can drive the telescopic rod 17 to move. After the telescopic rod 17 comes into contact with the button 14 of the temperature measuring gun, the button 14 can be pressed to realize the automatic pressing operation of the temperature measuring gun. At the same time, after the temperature measurement is completed, the moving seat 6 moves to perform temperature measurement on the next temperature measuring gun. It is easy to operate and can perform verification and calibration work on multiple temperature measuring guns. It has a high degree of automation and high verification and calibration efficiency.

[0059] In addition, when the missing tooth gear 12 and the second gear 19 mesh, they can drive the telescopic cylinder 18 to rotate, causing the telescopic rod 17 to move. When the missing tooth gear 12 and the second gear 11 disengage, the telescopic cylinder 18 can be reversed under the action of the spiral spring 20, thus resetting the telescopic rod 17. At this time, the missing tooth gear 12 has not yet meshed with the first gear 11. Only after a time T will the missing tooth gear 12 mesh with the first gear 11, thus providing sufficient time for the temperature measuring gun to perform its temperature measurement work, facilitating the temperature measurement work and improving the accuracy of temperature measurement.

[0060] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A calibration device for a radiation thermometer, comprising a base (1), characterized in that, A movable seat (6) is provided above the base (1). The base (1) has several clamping holes (2) for placing temperature measuring guns. The movable seat (6) is located on one side of the clamping holes (2). The movable seat is used to set the temperature measuring block. Several telescopic cylinders (18) are rotatably connected to the base (1). Telescopic rods (17) are internally threaded to the telescopic cylinders (18). A slider (16) is fixedly connected to the telescopic rods (17). The sliders (16) are slidably connected to the base (1). The telescopic rods (17) are located on one side of the clamping holes (2). The telescopic cylinder (18) is fixedly connected to a connecting rod, and the connecting rod is fixedly sleeved with a second gear (19). The connecting rod is rotatably connected to the base (1). A spiral spring (20) is sleeved on the connecting rod. One end of the spiral spring (20) is connected to the connecting rod, and the other end of the spiral spring (20) is connected to the base (1). The movable seat (6) is fixedly connected to a support rod (7), the support rod (7) is rotatably connected to a walking rod (9), and the walking rod (9) is fixedly fitted with a walking wheel (8) and a first gear (11). The movable seat (6) is fixedly connected to a motor (10), the motor (10) is connected to a toothed gear (12), the upper and lower ends of the toothed gear (12) are respectively meshed with the second gear (19) and the first gear (11), and the motor (10) is connected to a controller.

2. The radiation thermometer calibration device according to claim 1, characterized in that, The number of telescopic cylinders (18) is the same as the number of clamping holes (2).

3. The radiation thermometer calibration device according to claim 2, characterized in that, The arc length through which the toothed gear (12) drives the walking wheel (8) to rotate is equal to the distance between adjacent clamping holes (2). The base (1) is provided with a sliding groove (4), and the walking wheel (8) is rolled in the sliding groove (4).

4. The radiation thermometer calibration device according to claim 3, characterized in that, The temperature gun includes a handle (13), which is connected to a temperature measuring head (15) and a button (14). The button (14) is located on one side of the telescopic rod (17), and the temperature measuring head (15) is located on one side of the temperature measuring block (5).

5. A calibration and verification device for a radiation thermometer according to claim 4, characterized in that, The temperature measuring block (5) is connected to a heating mechanism, and a spacer plate (3) is provided between several clamping holes (2). The spacer plate (3) is fixedly connected to the base (1), and the heating mechanism is connected to the controller.

6. A method for using a radiation thermometer calibration device, characterized in that, The calibration and verification device for a radiation thermometer as described in claim 5 includes the following steps: S1: Place several temperature guns into the corresponding clamping holes (2), and then the controller controls the motor (10) to start. The controller heats the temperature measuring block (5) through the heating mechanism, and the motor (10) drives the toothed gear (12) to rotate. S2: The toothed gear (12) first meshes with the second gear (19), driving the second gear (19) and the telescopic cylinder (18) to rotate. The telescopic cylinder (18) drives the telescopic rod (17) to move, causing the telescopic rod (17) to move closer to the button (14). S3: As the telescopic rod (17) moves, the telescopic rod (17) drives the button (14) to move, so that the temperature measuring head (15) works, thereby measuring the temperature of the temperature measuring block (5); S4: As the motor (10) drives the toothed gear (12) to continue rotating, when the toothed gear (12) and the second gear (19) disengage, the telescopic cylinder (18) is reset under the action of the spiral spring (20), and the telescopic cylinder (18) drives the telescopic rod (17) to reset. S5: As the missing tooth gear (12) continues to rotate, after a time interval T, the missing tooth gear (12) meshes with the first gear (11), and the missing tooth gear (12) drives the first gear (11) and the traveling wheel (8) to rotate. The traveling wheel (8) rolls in the slide groove (4), thereby driving the moving seat (6) to move, so that the temperature measuring block (5) moves to the side of the next temperature measuring gun. S6: As the missing tooth gear (12) continues to rotate, the missing tooth gear (12) meshes with the next second gear (19), repeating S2-S5 until all temperature guns have been calibrated.

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