Thermometer calibration rack

Abstract

The utility model belongs to the technical field of metrology and calibration, in particular to a thermometer calibration frame, comprising a movable bracket and a processing table, comprising a constant temperature bath for calibrating the thermometer, and also comprising an automatic lifting calibration component arranged on the rear side wall of the constant temperature bath, and a calibration frame component arranged on the automatic lifting calibration component, wherein the thermometer is clamped on the thermometer buckle of a support plate, and a reduction motor is started to drive the screw rod to rotate. Since a threaded sleeve is screwed on the screw rod, a slide cylinder is sleeved on the slide rod, and both slide cylinders and the threaded sleeve are fixed on a fixed seat, the rotation of the screw rod drives the fixed seat to move in an up-and-down direction, and then the support plate is pushed through a U-shaped bracket to drive the thermometer on the thermometer buckle to enter the constant temperature bath, and then the entire thermometer calibration frame is placed in the constant temperature bath, which not only ensures the safety of the calibration personnel, but also ensures that the thermometer to be tested and the standard thermometer can be stably placed in the constant temperature bath, thereby ensuring the accuracy of the measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of metrology verification, and in particular relates to a thermometer verification rack. Background Art

[0002] Thermometers must be manufactured in accordance with the regulations of the metrology department to meet the current error standards. In order to ensure that the error of the thermometer is within the specified error range, the national metrology department needs to calibrate the thermometers in production and use;

[0003] At present, a commonly used calibration method is the comparison method. Specifically, the thermometer to be calibrated and the calibrated standard thermometer with a higher level of accuracy are placed in an adjustable constant temperature bath. During calibration, the temperature of the constant temperature bath is adjusted to several selected temperature points, and the readings of the two are compared and recorded to obtain a series of corresponding differences. After multiple heating, cooling, and repeated testing, if these differences are stable, the recorded differences are used as the correction amount of the thermometer to be calibrated, thus completing the calibration of the thermometer to be calibrated. When calibrating a short thermometer, because its temperature sensing rod is short, and the liquid surface of the constant temperature bath is at a certain distance from the calibration platform, the calibration personnel need to use their hands as a support to make the temperature sensing rod of the thermometer as much as possible below the liquid surface of the constant temperature bath. However, when the calibration personnel use their hands as a support to calibrate the thermometer, on the one hand, it may cause artificial measurement errors, and on the other hand, it may cause burns to the hands of the calibration personnel. Utility Model Content

[0004] To solve the problems raised in the above background technology. The utility model provides a thermometer calibration rack, including a mobile bracket and a processing table, including a thermostatic bath for calibrating the thermometer, an automatic lifting calibration component arranged on the rear side wall of the thermostatic bath, and a calibration rack component arranged on the automatic lifting calibration component;

[0005] The automatic lifting and testing component comprises a U-shaped support fixed on the rear side wall of the thermostatic bath, a screw rod and a pair of sliding rods for guiding are arranged between the upper and lower ends of the U-shaped support through bearings.

[0006] As the thermometer calibration stand of the utility model, preferably, a threaded sleeve is screwed onto the screw rod, and a sliding cylinder that slides up and down is sleeved onto the sliding rod.

[0007] As the thermometer calibration stand of the utility model, preferably, a fixing seat is fixed between the two sliding cylinders and the threaded sleeves.

[0008] As the thermometer calibration stand of the utility model, preferably, a reduction motor is installed on the top of the U-shaped support, and the rotor of the reduction motor is fixedly connected to the screw rod.

[0009] As the thermometer calibration rack of the utility model, preferably, the calibration rack assembly includes a U-shaped bracket fixed on the top of the fixing seat, a support plate is fixed to the bottom of one end of the U-shaped bracket, and a plurality of thermometer buckles are arranged in an array on the support plate.

[0010] As the thermometer calibration stand of the utility model, preferably, the volume of the support plate is smaller than the volume of the cavity of the thermostatic bath, and the support plate slides in the up-and-down direction inside the thermostatic bath.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] Connect the thermometer to the thermometer buckle of the support plate, start the reduction motor to drive the screw to rotate, since the threaded sleeve is screwed on the screw, the slide is sleeved on the slide rod, and the two slides and the threaded sleeve are fixed on the fixed seat, the fixed seat limits the threaded sleeve and the slide, and the rotation of the screw drives the fixed seat to move up and down, and then pushes the support plate through the U-shaped bracket to drive the thermometer on the thermometer buckle into the constant temperature bath, and then the entire thermometer calibration rack is placed in the constant temperature bath, which not only ensures the safety of the calibration personnel, but also ensures that the tested thermometer and the standard thermometer can be stably placed in the constant temperature bath, ensuring the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the automatic lifting and testing component of the utility model;

[0017] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at point A;

[0018] Figure 5 This is a schematic diagram of the structure of the calibration frame assembly of the utility model;

[0019] In the figure:

[0020] 1. Constant temperature bath;

[0021] 2. Automatic lifting and verification assembly; 21. U-shaped support; 22. Screw rod; 23. Sliding rod; 24. Threaded sleeve; 25. Sliding cylinder; 26. Fixed seat; 27. Reducer motor;

[0022] 3. Calibration frame assembly; 31. U-shaped bracket; 32. Support plate; 33. Thermometer buckle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] like Figure 1 As shown;

[0026] The thermometer calibration rack comprises a constant temperature bath 1 for calibrating the thermometer.

[0027] In this embodiment: In order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "the test personnel are required to use their hands as a support to make the temperature sensing rod of the thermometer as much as possible below the liquid surface of the constant temperature bath. However, when the test personnel use their hands as a support to test the thermometer, on the one hand, it may cause human measurement errors, and on the other hand, it may cause burns to the test personnel's hands." Combined with actual use, this problem is obviously a real problem that exists and is relatively difficult to solve. In view of this, in order to solve this technical problem, an automatic lifting test component 2 is added on this basis.

[0028] like Figure 1-5 As shown in the figure;

[0029] In combination with the above contents, in order to ensure not only the safety of the calibration personnel, but also to ensure that the thermometer to be tested and the standard thermometer can be stably placed in the constant temperature bath, and to ensure the accuracy of the measurement, it also includes an automatic lifting calibration component 2 arranged on the rear side wall of the constant temperature bath 1, and a calibration frame component 3 arranged on the automatic lifting calibration component 2;

[0030] The automatic lifting and testing assembly 2 includes a U-shaped support 21 fixed to the rear side wall of the thermostatic chamber 1, and a screw rod 22 and a pair of sliding rods 23 for guiding are arranged between the upper and lower ends of the U-shaped support 21 through bearings.

[0031] In an optional embodiment, a threaded sleeve 24 is screwed onto the screw rod 22, a slide cylinder 25 that slides up and down is sleeved on the slide rod 23, a fixing seat 26 is fixed between the slide cylinders 25 and the threaded sleeve 24, a reduction motor 27 is installed on the top of the U-shaped support 21, and the rotor of the reduction motor 27 is fixedly connected to the screw rod 22.

[0032] In this embodiment: the reduction motor 27 drives the screw rod 22 to rotate. Since the threaded sleeve 24 is screwed onto the screw rod 22, the slide 25 is sleeved onto the slide rod 23, and the two slides 25 and the threaded sleeve 24 are fixed on the fixed seat 26. The fixed seat 26 limits the threaded sleeve 24 and the slide 25. At this time, the rotation of the screw rod 22 drives the fixed seat 26 to move up and down.

[0033] In an optional embodiment, the calibration frame assembly 3 includes a U-shaped bracket 31 fixed on the top of the fixed seat 26, a support plate 32 is fixed to the bottom of one end of the U-shaped bracket 31, and a plurality of thermometer clips 33 are arranged in an array on the support plate 32. The volume of the support plate 32 is smaller than the volume of the tank cavity of the constant temperature bath 1, and the support plate 32 slides up and down inside the constant temperature bath 1.

[0034] Working principle of this utility model:

[0035] The thermometer is clamped on the thermometer buckle 33 of the support plate 32, and the reduction motor 27 is started to drive the screw rod 22 to rotate. Since the threaded sleeve 24 is screwed on the screw rod 22, the slide 25 is sleeved on the slide rod 23, and the two slides 25 and the threaded sleeve 24 are fixed on the fixing seat 26, and the fixing seat 26 limits the threaded sleeve 24 and the slide 25. At this time, the rotation of the screw rod 22 drives the fixing seat 26 to move up and down, and then the support plate 32 is pushed through the U-shaped bracket 31 to drive the thermometer on the thermometer buckle 33 into the constant temperature bath 1, and then the entire thermometer calibration rack is placed in the constant temperature bath. This not only ensures the safety of the calibration personnel, but also ensures that the thermometer to be tested and the standard thermometer can be stably placed in the constant temperature bath, thereby ensuring the accuracy of the measurement.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermometer calibration rack, comprising a thermostatic bath (1) for calibrating a thermometer, characterized in that: It also includes an automatic lifting and testing component (2) arranged on the rear side wall of the thermostatic bath (1), and a testing frame component (3) arranged on the automatic lifting and testing component (2); The automatic lifting and testing assembly (2) comprises a U-shaped support (21) fixed to the rear side wall of the thermostatic bath (1), a screw rod (22) and a pair of guide slide rods (23) are arranged between the upper and lower ends of the U-shaped support (21) via bearings.

2. The thermometer calibration stand according to claim 1, characterized in that: A threaded sleeve (24) is screwed onto the screw rod (22), and a sliding cylinder (25) that slides up and down is sleeved onto the sliding rod (23).

3. The thermometer calibration stand according to claim 2, characterized in that: A fixing seat (26) is fixed between the two slide cylinders (25) and the threaded sleeve (24).

4. The thermometer calibration stand according to claim 1, characterized in that: A reduction motor (27) is installed on the top of the U-shaped support (21), and the rotor of the reduction motor (27) is fixedly connected to the screw rod (22).

5. The thermometer calibration stand according to claim 1, characterized in that: The calibration frame assembly (3) comprises a U-shaped bracket (31) fixed on the top of the fixing seat (26), a support plate (32) is fixed at the bottom of one end of the U-shaped bracket (31), and a plurality of thermometer buckles (33) are arranged in an array on the support plate (32).

6. The thermometer calibration stand according to claim 5, characterized in that: The volume of the support plate (32) is smaller than the volume of the cavity of the thermostatic bath (1), and the support plate (32) slides in an up-and-down direction inside the thermostatic bath (1).

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