Sensitivity deviator verification device for voltmeter

Abstract

The utility model relates to the technical field of voltmeter calibration, in particular to a voltmeter sensitivity deviator calibration device. The utility model provides a voltmeter sensitivity deviator calibration device which can conveniently adjust output voltage and improve calibration accuracy. A voltmeter sensitivity deviator verification device comprises a mounting frame, a positioning seat, a guide frame, a sliding frame, first wires and the like, the upper side of the left portion of the mounting frame is connected with the positioning seat, the upper side of the middle of the mounting frame is connected with the guide frame, the guide frame is slidably connected with the sliding frame, and the left sides of the front portion and the rear portion of the sliding frame are connected with the first wires. According to the utility model, the output shaft of the motor rotates to drive the crank to rotate, the crank rotates to drive the sliding frame to slide back and forth, and the sliding frame slides to drive the first contact piece to be in contact with different second contact pieces, so that the current flows to the voltmeter, and the effects of conveniently adjusting the output voltage and improving the verification accuracy can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage meter calibration, in particular to a voltage meter sensitivity deviation calibration device. Background Art

[0002] A voltmeter is an instrument for measuring voltage. It is composed of a permanent magnet, a coil, etc. A traditional pointer voltmeter includes a sensitive galvanometer, which has a permanent magnet inside. A coil made of a wire is connected in series between the two terminals of the galvanometer. The coil is placed in the magnetic field of the permanent magnet and is connected to the pointer of the meter through a transmission device.

[0003] Currently, when calibrating the sensitivity bias of a voltmeter, it is usually necessary to connect a standard voltmeter and a voltmeter to be calibrated to a standard voltage source at the same time, adjust the voltage output by the standard voltage source to match the scale value on the voltmeter, read the measured value of the voltmeter to be calibrated, and compare it with the reading of the standard voltmeter, and then calibrate and adjust the voltmeter to be calibrated. However, in order to ensure accuracy, existing devices need to adjust the output voltage multiple times, which is more troublesome to operate.

[0004] Therefore, in order to solve the above problems, a voltmeter sensitivity offset calibration device has been developed, which can facilitate the adjustment of the output voltage and improve the accuracy of the calibration. Utility Model Content

[0005] In order to overcome the disadvantages of existing devices that the output voltage needs to be adjusted multiple times to ensure accuracy, which is cumbersome to operate, the utility model provides a voltmeter sensitivity offset calibration device which can facilitate the adjustment of the output voltage and improve the accuracy of the calibration.

[0006] The technical implementation scheme of the utility model is: a voltmeter sensitivity deviation calibration device, including a mounting frame, a positioning seat, a guide frame, a sliding frame, a first wire, a first stud, a first clamping knob, a first contact piece, a mounting frame, a second stud, a second clamping knob, a second wire, a second contact piece, an elastic member and a driving assembly, the upper left side of the mounting frame is connected to the positioning seat, the upper middle side of the mounting frame is connected to the guide frame, the sliding frame is slidably connected to the guide frame, the left sides of the front and rear parts of the sliding frame are connected to the first wire, the left part of the first wire is connected to the first stud, the first stud is threadedly connected to the first clamping knob, the right sides of the front and rear parts of the sliding frame are connected to the first contact piece, the upper right side of the mounting frame is connected to multiple mounting seats, the mounting seats are connected to the second studs, the second studs are threadedly connected to the second clamping knob, the first The two studs are connected to a second wire, the left part of the second wire is slidably connected to the mounting seat, the left side of the second wire is connected to a second contact piece, the second contact piece is connected to an elastic member between the adjacent mounting seats, a driving assembly is connected between the upper middle side of the mounting frame and the sliding frame, the voltmeter is placed on the positioning seat, and the voltmeter is connected to the first stud through a line, the first clamping knob is rotated to fix the line on the first stud, and then the lines with different voltage output values ​​are respectively connected to the second stud, the second clamping knob is rotated to fix the line on the second stud, the sliding frame is driven by the driving assembly to slide back and forth on the guide frame, and the sliding of the sliding frame drives the first contact piece to move back and forth, and under the action of the elastic member, the first contact piece is respectively in contact with different second contact pieces, so that current can flow to the voltmeter.

[0007] Optionally, an L-shaped limiting plate is provided on the positioning seat to facilitate limiting the voltmeter.

[0008] Optionally, the first contact pieces are all of trapezoidal structure.

[0009] Optionally, anti-slip grooves are provided on the second clamping knob and the first clamping knob to facilitate the rotation of the second clamping knob and the first clamping knob.

[0010] Optionally, the elastic member is a spring.

[0011] Optionally, the driving assembly includes a motor and a crank. The motor is connected to the upper middle side of the mounting frame, and the crank is connected to the motor output shaft. The crank is slidably and rotatably connected to the sliding frame. The rotation of the motor output shaft drives the crank to rotate, and the rotation of the crank drives the sliding frame to slide back and forth on the guide frame.

[0012] Beneficial effects: The utility model drives the crank to rotate by rotating the motor output shaft, and the rotation of the crank drives the sliding frame to slide back and forth. The sliding of the sliding frame drives the first contact piece to contact with a different second contact piece, so that current flows to the voltmeter, which can facilitate the adjustment of the output voltage and improve the accuracy of the calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model.

[0016] Figure 4 It is a partial schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure numbers: 1_mounting frame, 2_positioning seat, 3_guide frame, 4_sliding frame, 5_first wire, 6_first stud, 7_first clamping knob, 8_first contact piece, 9_mounting seat, 10_second stud, 11_second clamping knob, 12_second wire, 13_second contact piece, 14_spring, 15_motor, 16_crank. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0019] A voltage meter sensitivity deviation calibration device, such as Figure 1-Figure 4As shown, it includes a mounting frame 1, a positioning seat 2, a guide frame 3, a sliding frame 4, a first wire 5, a first stud 6, a first clamping knob 7, a first contact piece 8, a mounting seat 9, a second stud 10, a second clamping knob 11, a second wire 12, a second contact piece 13, a spring 14 and a driving assembly. The upper left side of the mounting frame 1 is connected to the positioning seat 2, and the positioning seat 2 is provided with an L-shaped limit plate for facilitating the limiting of the voltmeter. The upper middle side of the mounting frame 1 is connected to the guide frame 3, and the sliding frame 4 is slidably connected to the guide frame 3. The left sides of the front and rear parts of the sliding frame 4 are both connected to the first wire 5, the left parts of the first wire 5 are both connected to the first stud 6, and the first clamping knob 7 is threadedly connected to the first stud 6. The right sides of the front and rear parts of the sliding frame 4 are both connected to the first contact piece 8, and the first contact piece 8 is a trapezoidal structure. The right side of the mounting frame 1 Four mounting seats 9 are connected to the upper side, and the mounting seats 9 are all connected with second studs 10, and the second studs 10 are all threadedly connected with second clamping knobs 11, and the second clamping knobs 11 and the first clamping knobs 7 are both provided with anti-slip grooves to facilitate the rotation of the second clamping knobs 11 and the first clamping knobs 7, and the second studs 10 are all connected with second wires 12, and the left part of the second wires 12 is slidably connected to the mounting seats 9, and the left side of the second wires 12 is connected with second contact pieces 13, and springs 14 are connected between the second contact pieces 13 and the adjacent mounting seats 9, and a driving assembly is connected between the middle upper side of the mounting frame 1 and the sliding frame 4, and the driving assembly includes a motor 15 and a crank 16, and the middle upper side of the mounting frame 1 is connected with a motor 15, and the output shaft of the motor 15 is connected with a crank 16, and the crank 16 is slidably and rotatably connected to the sliding frame 4.

[0020] When the utility model is in use, the utility model needs to be placed in the operating area first, and then the voltmeter is placed on the positioning seat 2, and the voltmeter is connected to the first stud 6 through the line, the first clamping knob 7 is rotated to fix the line on the first stud 6, and then the lines with different voltage output values ​​are respectively connected to the second stud 10, and the second clamping knob 11 is rotated to fix the line on the second stud 10. After the connection work is completed, the motor 15 is started, and the output shaft of the motor 15 rotates to drive the crank 16 to rotate. The rotation of the crank 16 drives the sliding frame 4 to slide back and forth on the guide frame 3. The sliding of the sliding frame 4 drives the first contact piece 8 to move back and forth. Under the action of the spring 14, the first contact piece 8 is respectively in contact with different second contact pieces 13, so that the current can flow to the voltmeter, so that different voltage output values ​​can be adjusted easily and the accuracy of the calibration is improved. After the calibration work is completed, the motor 15 can be turned off.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A voltage meter sensitivity deviation calibration device, characterized in that: The invention comprises a mounting frame (1), a positioning seat (2), a guide frame (3), a sliding frame (4), a first wire (5), a first stud (6), a first clamping knob (7), a first contact piece (8), a mounting seat (9), a second stud (10), a second clamping knob (11), a second wire (12), a second contact piece (13), an elastic member and a driving assembly. The upper left side of the mounting frame (1) is connected to the positioning seat (2), the upper middle side of the mounting frame (1) is connected to the guide frame (3), and the guide frame (3) is connected to the positioning seat (2). A sliding frame (4) is provided, the left sides of the front and rear parts of the sliding frame (4) are both connected to a first wire (5), the left parts of the first wire (5) are both connected to a first stud (6), the first stud (6) is both threadedly connected to a first clamping knob (7), the right sides of the front and rear parts of the sliding frame (4) are both connected to a first contact piece (8), the upper side of the right part of the mounting frame (1) is connected to a plurality of mounting seats (9), the mounting seats (9) are both connected to a second stud (10), the second stud (10) is both threadedly connected to a second clamping knob (11), and the second The studs (10) are connected to second wires (12), the left part of the second wires (12) is connected to the mounting seat (9) in a sliding manner, the left side of the second wires (12) is connected to second contact pieces (13), elastic pieces are connected between the second contact pieces (13) and the adjacent mounting seats (9), a driving assembly is connected between the upper middle side of the mounting frame (1) and the sliding frame (4), a voltmeter is placed on the positioning seat (2), and the voltmeter is connected to the first stud (6) through a line, and the first clamping knob (7) is turned to move the line The first contact piece (8) is fixed on the first stud (6), and then the circuits with different voltage output values ​​are respectively connected to the second stud (10). The second clamping knob (11) is rotated to fix the circuits on the second stud (10). The driving component drives the sliding frame (4) to slide forward and backward on the guide frame (3). The sliding of the sliding frame (4) drives the first contact piece (8) to move forward and backward. Under the action of the elastic member, the first contact piece (8) is respectively in contact with different second contact pieces (13), so that the current can flow to the voltmeter.

2. A voltage meter sensitivity deviation calibration device according to claim 1, characterized in that: An L-shaped limiting plate is arranged on the positioning seat (2) to facilitate limiting the voltage meter.

3. A voltage meter sensitivity deviation calibration device according to claim 2, characterized in that: The first contact pieces (8) are all of trapezoidal structure.

4. A voltage meter sensitivity deviation calibration device according to claim 3, characterized in that: The second clamping knob (11) and the first clamping knob (7) are both provided with anti-slip grooves, so as to facilitate the rotation of the second clamping knob (11) and the first clamping knob (7).

5. A voltage meter sensitivity deviation calibration device according to claim 4, characterized in that: The elastic member is a spring (14).

6. A voltage meter sensitivity deviation calibration device according to claim 5, characterized in that: The driving assembly comprises a motor (15) and a crank (16). The motor (15) is connected to the upper middle side of the mounting frame (1). The crank (16) is connected to the output shaft of the motor (15). The crank (16) is connected to the sliding frame (4) in a sliding and rotatable manner. The output shaft of the motor (15) rotates to drive the crank (16) to rotate. The rotation of the crank (16) drives the sliding frame (4) to slide forward and backward on the guide frame (3).

Images