CN203704968U - Instrument gear automatic switching device - Google Patents

Abstract

The utility model discloses an automatic switching device for instrument gears, which includes a controller, which controls the start of a standard calibration platform through a signal output device, and the controller collects signals from the standard calibration platform through a first sampler, and The rotation of the motor is controlled by the collected signal, the motor is connected to the transmission device through the reducer, the transmission device transmits the power to the knob holder, the knob holder toggles the knob of the calibrated instrument, and the calibrated instrument passes the wire It is connected with the standard calibration platform, and the controller is connected to the instrument to be calibrated through the second sampler. The utility model can replace the manual switching knob in the detection and calibration work of the instrument, and automatically complete the gear position switching of the calibrated instrument; according to the calibration process of the standard calibration table, the continuous calibration of each gear position is completed. The resistance torque and rotation angle of different gears of the instrument can be automatically detected to realize accurate switching. Using the device can save a lot of manpower and improve work efficiency.

Description

Instrument gear automatic switching device

technical field

The utility model relates to an automatic switching device for instrument gear positions, which belongs to the technical field of instrument detection equipment. the

Background technique

Electrical instruments and meters are one of the indispensable instruments for electrical measurement in production or scientific experiment departments. According to the national metrology law, all kinds of measuring instruments and meters must be checked regularly with a standard calibration table to ensure the accuracy of measurement. Some of the instruments and meters have multiple ranges, and the knobs are used to switch between the ranges. For example, the DC resistance box for measurement is a variable resistance measurer composed of several known resistances in a certain form. The change is achieved by switching the transform knob. To calibrate this type of instrument, the gear switch is usually completed manually. After the calibrated instrument is connected to the standard calibration platform, each time a gear (also called a point) is calibrated, the knob needs to be manually turned down. One gear, and then start the standard calibration platform again to perform the calibration of the next gear, and repeat the operation until all the gears of the knob are calibrated. The detection of each stall requires a certain amount of time, and the personnel must wait and cannot leave. Therefore, this method has low degree of automation, low efficiency, and consumes a lot of time for the staff. the

And because of different instruments, the number of gears of the knob, the resistance moment when switching, and the rotation angle of each gear are not the same, that is, different instruments of the same model require different forces to turn the knob, so the design During automatic switching, it is difficult to use a fixed torque and the same rotation angle to complete different gear switching. the

Contents of the invention

The purpose of the utility model is to provide an automatic switching device for instrument gears, which solves the problems of low automation, low efficiency, and time-consuming problems of using manual gear shifting when calibrating instruments, and solves the problems of different instruments and meters, The number of gears, resistance torque, and rotation angle are not the same, so it is difficult to use a fixed torque and the same rotation angle to complete the problem of switching between different gears. the

The technical scheme of the utility model: an automatic switching device for instrument gear, including a controller, the controller controls the start of the standard calibration platform through the signal output device, and the controller performs signal collection on the standard calibration platform through the first sampler , and control the rotation of the motor through the collected signal, the motor is connected to the transmission device through the reducer, the transmission device transmits the power to the knob holder, the knob holder toggles the knob of the calibrated instrument, and the calibrated instrument It is connected to the standard calibration platform through wires, and the controller is connected to the instrument to be calibrated through the second sampler. the

In the above-mentioned device for automatically switching instrument positions, the instrument to be calibrated is held by an instrument shell holder. the

In the above-mentioned device for automatically switching instrument gears, the controller is provided with a buzzer. the

In the above-mentioned device for automatically switching instrument positions, the controller is provided with buttons and digital tubes. the

Beneficial effects of the utility model: the utility model can replace manual switching knobs in the detection and calibration work of multi-range instruments, and automatically complete the gear switching of the calibrated instruments; the utility model uses a single-chip microcomputer as a controller, through the first The sampler collects signals from the standard calibration table, and completes the continuous calibration of each gear according to the calibration process of the standard calibration table. The second sampler can automatically detect the resistance torque and rotation angle of each instrument in different gears Detection, to achieve accurate switching. After the knob is switched to the right position, the device sends out a pulse to start the calibration platform to detect the next point until the detection of all points is completed, and then sends out a reminder signal. Using the device can save a lot of manpower and improve work efficiency. the

Description of drawings

Accompanying drawing 1 is a block diagram of the utility model;

Accompanying drawing 2 is the structural representation of the utility model;

Reference signs: 1-controller, 2-electric motor, 3-reducer, 4-transmission device, 5-knob holder, 6-instrument shell holder, 7-first sampler, 8-signal output device , 9-the instrument to be calibrated, 10-standard calibration table, 11-buzzer, 12-button, 13-digital tube, 14-second sampler.

Detailed ways

Embodiment of the present utility model: a device for automatically switching instrument gears, as shown in Figure 1-2, includes a controller 1, the controller 1 controls the start of the standard calibration table 10 through the signal output device 8, and the controller 1 The first sampler 7 is used to collect signals from the standard calibration table 10, and the collected signals are used to control the rotation of the motor 2. The motor 2 is connected to the transmission device 4 through the reducer 3, and the transmission device 4 transmits power to the knob clamping 5, the knob holder 5 toggles the knob of the instrument 9 to be calibrated, the instrument 9 to be calibrated is connected to the standard calibration table 10 through wires, and the controller 1 and the instrument 9 to be calibrated are connected with a second Two samplers 14 . the

The instrument to be verified 9 is held by the instrument case holder 6 . the

The controller 1 is provided with a buzzer 11 . the

The controller 1 is provided with keys 12 and digital tubes 13 . the

When the utility model is in use, after the preparatory work is completed, the detection and calibration work starts. The controller 1 sends a signal to start the standard calibration platform 10 through the signal output device 8, and the first gear of the calibrated instrument 9 is calibrated. After the gear calibration is completed, the first sampler 7 receives a signal from the standard calibration platform 10, the controller 1 starts the motor 2, reduces the speed to an appropriate speed through the reducer 3, and transmits the power to the motor through the transmission device 4. Knob holder 5, the knob holder 5 turns the knob of the calibrated instrument 9 to rotate, the controller 1 can sample the knob switching process of the calibrated instrument 9 through the second sampler 14, when the calibrated instrument When the knob of 9 is switched in place (when the steel ball falls into the groove), there will be a slight vibration, and its torque will have a slight instantaneous change, and the controller 1 uses the second sampler 14 to sample the data of this instantaneous change of the knob. Control the switching of the knob of the instrument 9 to be calibrated in real time. After the switch is in place, the motor 2 stops rotating, and the knob holder 5 releases the constraint on the knob of the calibrated instrument 9, so that the knob can be completed in a completely free state. detection, and ensure that the motor 2 is powered on again to achieve no-load start; the controller 1 sends a signal to the standard calibration table 10 through the signal output device 8, and starts the standard calibration table 10 for the next level of detection, and the controller 1 also passes The first sampler 7 tracks the detection completion of the standard calibration platform 10 in real time, and when the first sampler 7 collects the detection completion signal sent by the standard calibration platform 10, the controller 1 automatically starts the next round of gear switching Action, such a cycle action, until all the gears are detected, the controller 1 operates the motor 2 to reverse, and the knob is turned back to the initial position (zero position), and the buzzer 11 of the controller 1 sounds at the same time, reminding the disk All points are detected. During the calibration process, the first sampler 7 collects the signal sent by the standard calibration platform 10 in real time, so that the rhythm of the knob switching action of the instrument 9 to be calibrated is in sync with the detection process of the standard calibration platform 10; the second sampler 14 also real-time Collect the resistance torque and the angle of rotation when the knob of the calibrated instrument 9 is switched, so as to realize accurate switching. the

The controller 1 is provided with buttons 12 and digital tubes 13, which can set and display the gear numbers of different instruments. The controller 1 also has a power-off memory function. After the first setting of the gear numbers of the same type of instruments, no need Repeat the setting again. The flexible structure of the transmission device 4 can not only transmit torque, but also change the size and move at will, so that the knob holder 5 can reach any position on the instrument 9 to be calibrated, so as to conveniently clamp various knobs in different positions. When the switching is completed, the constraint on the knob can be released immediately, so that the knob can complete the test in a completely free state. The instrument shell holder 6 can conveniently clamp the instrument shell and unclamp it conveniently. the

Claims (4)

1. an instrument gear automatic switching control equipment, it is characterized in that: include controller (1), controller (1) is by the startup of signal output device (8) control criterion checking table (10), controller (1) carries out signals collecting by the first sampling thief (7) to standard checking table (10), and rotate by the signal controlling motor (2) collecting, motor (2) is connected to gearing (4) by reductor (3), gearing (4) sends power to knob clamper (5), knob clamper (5) is to being stirred by the knob of tester (9), be connected with standard checking table (10) by wire by tester (9), controller (1) is connected to by tester (9) by the second sampling thief (14).

2. instrument gear automatic switching control equipment according to claim 1, is characterized in that: describedly clamped by tool housing clamper (6) by tester (9).

3. instrument gear automatic switching control equipment according to claim 1, is characterized in that: on described controller (1), be provided with hummer (11).

4. instrument gear automatic switching control equipment according to claim 1, is characterized in that: on described controller (1), be provided with button (12) and charactron (13).