CN213749958U - A withstand voltage detection tool for three-terminal leading-out combined capacitor - Google Patents

Abstract

The utility model discloses a withstand voltage detection tool that is used for three-terminal to draw forth combination capacitor, include: the device comprises a control box, a jig bracket, a lifting driving mechanism, a mounting plate and a detecting head; a control circuit is arranged in the control box, the jig support is fixedly arranged on the control box, the lifting driving mechanism is fixedly arranged on the jig support, the output end of the lifting driving mechanism is fixedly connected with the mounting plate, and three rows of detecting heads are fixedly arranged on the mounting plate; the mounting plate is also provided with three rows of connecting wires; and the control box is provided with two-end keys and three-end keys which are communicated with the control circuit. Compared with the existing manual mode, the utility model avoids the complex manual operation and greatly improves the working efficiency; the method is stable and reliable, avoids manual misoperation, improves the accuracy of testing, and reduces the reject ratio of products; and the risk of electric shock and short circuit is avoided.

Description

A withstand voltage detection tool for three-terminal leading-out combined capacitor

Technical Field

The utility model relates to a capacitance detection field, concretely relates to withstand voltage detection tool that is used for the three-terminal to draw forth combination capacitor.

Background

The combined capacitor with three lead-out ends is shown in fig. 1 and comprises three electrodes, namely an electrode A, an electrode B and an electrode C; the electrode A is connected with the upper end face of one of the cores in the capacitor, the electrode B is connected with the upper end face of the other core in the capacitor, and the electrode C is a common terminal electrode of the capacitor and is connected with the lower end faces of the two cores in the capacitor.

Conventionally, voltage resistance detection of a three-terminal lead-out combined capacitor is usually performed manually, and both-terminal voltage resistance detection and three-terminal voltage resistance detection of the capacitor have to be performed manually. Firstly, manually clamping two groups of clamps with different polarities to two extraction electrodes A and B corresponding to each capacitor, then performing two-end voltage resistance test, and manually clamping the corresponding clamps to three extraction electrodes corresponding to the capacitors after the two-end voltage resistance test is finished, thereby finishing the three-end voltage resistance test. The operation of this process is complicated loaded down with trivial details, and very consuming time consumes the manual work, and the probability of maloperation is high, and the clip exposes not the protection moreover, drops easily and causes the short circuit to strike sparks, has great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of prior art, the utility model aims to provide a withstand voltage detection tool for combined capacitor is drawn forth to the three-terminal can be drawn forth combined capacitor to the three-terminal and carry out both ends withstand voltage and detect and the withstand voltage of three-terminal detects, has the characteristics of using manpower sparingly, operating efficiency is high, the defective rate is low, high reliability.

The utility model discloses a following technical scheme realizes:

a withstand voltage detection tool for three-terminal leading-out combined capacitor includes: the device comprises a control box, a jig bracket, a lifting driving mechanism, a mounting plate and a detecting head; the control box is internally provided with a control circuit, the control circuit is connected with the test voltage of external voltage-resistant equipment, the jig support is fixedly arranged on the control box, the lifting driving mechanism is fixedly arranged on the jig support, the output end of the lifting driving mechanism is fixedly connected with the mounting plate, three rows of detecting heads are fixedly arranged on the mounting plate, and each row of detecting heads is provided with a plurality of detecting heads; the mounting plate is also provided with three rows of connecting wires, and each row of the detecting heads is electrically connected with the control circuit through one row of the connecting wires; the control box is provided with a two-end key and a three-end key which are communicated with the control circuit, the two-end key is used for controlling the control circuit to respectively input the positive pole and the negative pole of the voltage to the two rows of the probe heads, the three-end key is used for controlling the control circuit to respectively input the positive pole of the voltage to the two rows of the probe heads, and the negative pole of the voltage to the other row of the probe heads; the control box is also provided with a starting switch, and the starting switch is electrically connected with the control circuit and used for controlling the lifting driving mechanism to drive the detection head on the mounting plate to descend.

Furthermore, a stop switch is also arranged on the control box; the stop switch is electrically connected with the control circuit and is used for controlling the lifting driving mechanism to drive the probe on the mounting plate to ascend.

Further, the withstand voltage detection tool for three-terminal leading-out combined capacitor further comprises: a protective cover; the protective cover is fixedly connected to the mounting plate and covers the outer sides of the detecting heads.

Further, the withstand voltage detection tool for three-terminal leading-out combined capacitor further comprises: a slide block and a slide rail; the output end of the lifting driving mechanism is fixedly connected to the sliding block, the sliding block is connected to the sliding rail in a sliding mode, and the sliding rail is fixedly arranged on the jig support.

Further, the lifting driving mechanism is an air cylinder.

Further, a buzzer is further arranged on the control box, and the buzzer is electrically connected with the control circuit and used for sending a sound signal after the control circuit finishes discharging.

Further, the withstand voltage detection tool for three-terminal leading-out combined capacitor further comprises: a limit baffle; the limiting baffle is L-shaped and is fixedly arranged on the top surface of the control box.

Further, the withstand voltage detection tool for three-terminal leading-out combined capacitor further comprises: a spring; the spring is sleeved on one end, corresponding to the lower portion of the mounting plate, of the detecting head, the upper end of the spring abuts against the mounting plate, and the lower end of the spring abuts against the detecting head.

Further, the withstand voltage detection tool for three-terminal leading-out combined capacitor further comprises: a limit nut; the limiting nut is fixedly sleeved on one end, opposite to the upper portion of the mounting plate, of the detecting head, and the outer diameter of the limiting nut is larger than the inner diameter of the mounting hole of the mounting plate.

Furthermore, the control box and the jig bracket are both made of high-insulation high-hardness bakelite plate materials.

Compared with the prior art, the utility model discloses the beneficial effect that can reach does:

firstly, placing a capacitor to be detected on a control box, and aligning an extraction electrode with a corresponding probe up and down; when voltage resistance detection is carried out on the two ends of the capacitor, a two-end key and a starting switch are pressed, a lifting driving mechanism drives the detecting heads on the mounting plate to descend, external voltage resistance equipment is started at the moment, voltage is transmitted to a control circuit of a jig by a voltage output end on the voltage resistance equipment, positive poles and negative poles of the voltage are respectively input to the corresponding two rows of detecting heads through the control circuit, each 2 detecting heads are tightly attached to the corresponding 2 capacitor leading-out electrodes, test voltage is transmitted to the detecting heads and applied to the 2 capacitor leading-out electrodes, voltage resistance detection is carried out on the two ends of the capacitor at the moment, and the capacitor is discharged after the test time is up; when carrying out three-terminal withstand voltage detection to the condenser, press three-terminal button and starting switch, lift actuating mechanism drives the probe and descends, start external withstand voltage equipment this moment, the last voltage output of withstand voltage equipment conveys the voltage to the control scheme of tool, control scheme is with the positive pole input corresponding two rows of probe departments of voltage, input the negative pole of voltage another row of probe department, every 3 probe closely laminate with 3 condenser extraction electrodes that correspond, test voltage transmits to the probe and applys 3 condenser extraction electrodes on, carry out three-terminal withstand voltage test to the electric capacity this moment, after test time arrives, discharge the electric capacity.

The utility model discloses can carry out the withstand voltage detection of both ends and the withstand voltage detection of three-terminal to the combined capacitor that the three-terminal was drawn forth, compare the mode that present manual work pressed from both sides the clip to the electric capacity extraction electrode, the utility model discloses avoided loaded down with trivial details manual operation, improved the operating efficiency by a wide margin; the method is stable and reliable, avoids manual misoperation, improves the accuracy of testing, and reduces the reject ratio of products; the risk of electric shock and short circuit is avoided, and potential safety hazards are reduced; two-end withstand voltage detection and three-end withstand voltage detection can be flexibly switched, and the application range is wide.

Drawings

FIG. 1 is a schematic structural diagram of a three-terminal lead-out combined capacitor;

FIG. 2 is a schematic diagram showing the internal equivalent connection of a three-terminal lead-out combined capacitor;

FIG. 3 is a schematic view of the voltage-withstanding test fixture after the capacitor is mounted thereon;

fig. 4 is an overall schematic view of the pressure-resistant testing jig;

fig. 5 is a schematic view of the pressure-resistant detection jig after the protective cover is hidden;

fig. 6 is a schematic view of the movable portion of the pressure-resistant test jig.

In the figure: 10. a control box; 101. two-end keys; 102. three-terminal keys; 103. starting a switch; 104. a stop switch; 105. a buzzer; 20. a jig support; 30. a cylinder; 40. mounting a plate; 50. a probe head; 60. a connecting wire; 70. a protective cover; 80. a slider; 90. a slide rail; 100. a limit baffle; 110. a spring; 120. a limit nut; 130. and a capacitor.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

The utility model discloses a withstand voltage detection tool for three-terminal leading-out combined capacitor 130 can carry out the withstand voltage detection in both ends and the withstand voltage detection of three-terminal to condenser 130, and condenser 130 structural representation is as shown in figure 1, and the inside equivalent connection of condenser 130 indicates as figure 2.

Referring to fig. 3-5, the present invention includes: control box 10, tool support 20, lift actuating mechanism, mounting panel 40 and detecting head 50. The control box 10 is provided therein with a control circuit, the control circuit is connected to a test voltage of an external voltage withstanding device and is used for inputting the test voltage to the probing heads 50, and specifically, the control circuit can control to respectively transmit a positive voltage and a negative voltage to the corresponding probing heads 50. The jig support 20 is fixedly arranged on the control box 10, the lifting driving mechanism specifically adopts an air cylinder 30, and other linear driving mechanisms such as a linear motor can also be adopted, and the air cylinder 30 is fixedly arranged on the jig support 20; the output end of the cylinder 30 (i.e. the push rod of the cylinder 30) is fixedly connected with the mounting plate 40, three rows of probes 50 are fixedly mounted on the mounting plate 40, each row of probes 50 is provided with a plurality of probes, and the probes 50 can be driven to move up and down when the cylinder 30 is driven, so that the probes 50 are attached to the extraction electrodes of the capacitor 130. The mounting plate 40 is further provided with three rows of connecting wires 60, the connecting wires 60 may be copper sheets or conductive wires, and each row of the probing tips 50 is electrically connected to the control circuit through one row of the connecting wires 60, so that the control circuit can input voltage to the probing tips 50 through the connecting wires 60. The control box 10 is provided with a two-terminal key 101 and a three-terminal key 102 which are both communicated with a control circuit; the two-end key 101 is used for controlling a circuit to respectively input the positive pole and the negative pole of voltage to the two rows of probe heads 50, so that one row of probe heads 50 is provided with positive voltage, the other row of probe heads 50 is provided with negative voltage, and the rest row of probe heads 50 are not electrified; the three-terminal key 102 is used for controlling the circuit to input the positive pole of the voltage to the two rows of the probe heads 50, and the negative pole of the voltage to the probe head 50 of the other row, so that the two rows of the probe heads 50 have positive voltage, and the probe head 50 of the other row has negative voltage. The control box 10 is further provided with a start switch 103, and the start switch 103 is electrically connected with the control circuit and is used for controlling the air cylinder 30 to drive the probe 50 on the mounting plate 40 to descend.

Correspondingly, the control box 10 is further provided with a stop switch 104, the stop switch 104 is electrically connected with the control circuit, and is used for controlling the air cylinder 30 to drive the probe 50 on the mounting plate 40 to ascend, and after the test is finished, the stop switch 104 is pressed down to stop the work of the jig.

It should be noted that, the specific circuit composition of the control circuit, the circuit connection mode of the control circuit and each switch (for example, how the starting switch 103 controls the on-off of the circuit, how the two-end key 101 controls the positive and negative voltage transmission to the corresponding detecting head 50), are common prior art in the electrical field, and those skilled in the art can know how the circuit should be specifically arranged, and this part is not in the improvement point of the present invention, and is not described herein again.

Preferably, the present invention further comprises a protective cover 70, wherein the protective cover 70 is fixedly connected to the mounting plate 40 and encloses all of the outer sides of the probe 50. The protective cover 70 is used for wrapping the electrified part of the jig moving device, so that the protective function is achieved, and the hidden danger of electric leakage and electric shock is avoided.

Preferably, the utility model discloses still include slider 80 and slide rail 90, the push rod fixed connection slider 80 of cylinder 30, slider 80 sliding connection in slide rail 90, slide rail 90 is fixed to be set up on tool support 20, makes whole lift movable part can follow the vertical direction stationary motion.

The air pipe of the air cylinder 30 is connected into the control box 10, the air cylinder 30 is fixed in the middle of the jig support 20, the push rod is connected with the slide block 80 on the slide rail 90 and then fixed with the protective cover 70, and the push rod of the air cylinder 30 is controlled by a signal to push down or pull up the protective cover 70 integrally during work.

Preferably, the control box 10 is further provided with a buzzer 105, and the buzzer 105 is electrically connected with the control circuit and used for sending a sound signal after the control circuit finishes discharging to remind a producer of finishing the test.

Preferably, referring to fig. 4, the present invention further includes a limit baffle 100, wherein the limit baffle 100 is L-shaped and is fixedly disposed on the top surface of the control box 10. The limiting baffle 100 is used to fix the position of the measured capacitor, for example, several capacitors are placed on the control box 10, and the capacitors at the edge position are abutted against the limiting baffle 100 to align the positions of the capacitors, so that the leading electrodes of the capacitors 130 are aligned with the probes 50 corresponding to the fixture.

Preferably, referring to fig. 6, the present invention further includes a spring 110, the spring 110 is sleeved on one end of the probing tip 50 opposite to the lower side of the mounting plate 40, the upper end of the spring 110 abuts against the mounting plate 40, and the lower end abuts against the probing tip 50. The spring 110 is used to make the probe 50 have a resilient force when pressing on the electrode of the capacitor 130 so as not to damage the electrode by impact, and to make the probe 50 contact with the electrode more tightly so as not to cause sparking during operation.

Preferably, referring to fig. 6, the present invention further comprises a limit nut 120, the limit nut 120 is fixedly sleeved on one end of the probing tip 50 above the mounting plate 40, and the outer diameter of the limit nut 120 is larger than the inner diameter of the mounting hole of the mounting plate 40. The limiting nut 120 is used for limiting the probing tip 50 in the downward direction, so that the probing tip 50 is prevented from falling off, and the probing tip 50 is kept in the mounting plate 40.

Preferably, the control box 10 and the jig support 20 are made of high-insulation and high-hardness bakelite plates, so that friction and even impact during transportation can be resisted, the transportation and the storage are convenient, the borne test voltage can reach more than 1 ten thousand volts, the test of common voltage class products is basically met, and the anti-creeping effect is effectively achieved.

The working principle of the present invention will be described with reference to the following embodiments.

First, the three lead-out electrodes of the capacitor 130 can be regarded as electrode a, electrode B, and electrode C; where electrode C is the common terminal electrode of capacitor 130. The three rows of probes 50 can be considered as probe a, probe B and probe C, respectively, and correspond to the positions of electrode a, electrode B and electrode C, respectively.

When two-end withstand voltage detection is carried out: firstly, a capacitor 130 to be detected is placed on the control box 10, a capacitor pin (namely a capacitor leading-out electrode) is positioned below a corresponding probe 50, the starting switch 103 is pressed, the air cylinder 30 drives the probe 50 on the mounting plate 40 to descend, the probe a is attached to the electrode A, and the probe B is attached to the electrode B. When the two-end key 101 is pressed down, the control circuit inputs the positive pole and the negative pole of the voltage to the probe head a and the probe head b respectively, the probe head c is not electrified, the test voltage passes through the probe head 50 and then is applied to the leading-out electrode of the capacitor 130, namely, the positive pole of the voltage is communicated with a (A), and the negative pole of the voltage is communicated with b (B), and the two ends are subjected to voltage withstanding test.

When three-terminal withstand voltage detection is carried out: the air cylinder 30 drives the probe 50 to descend, the probes a, b and c are respectively tightly attached to the electrodes A, B, C, the control circuit inputs the positive pole of voltage to the probe a and the probe b, and inputs the negative pole of voltage to the probe c; after passing through the probe 50, the test voltage is applied to the leading-out electrode of the capacitor 130, namely, the positive electrodes of the voltage are communicated with a (A) and b (B), and the negative electrode is communicated with c (C), and the three ends are subjected to voltage resistance test.

According to different process requirements, the utility model discloses can possess three kinds of mode: carrying out two-end voltage resistance test independently: the starting switch 103 is pressed down, the push rod of the air cylinder 30 is pushed down, the two-end key 101 is pressed down, then the external pressure-resistant equipment is started to start the two-end pressure-resistant test, and after the test and the discharge are finished, the buzzer 105 sounds. And secondly, independently carrying out three-terminal voltage withstanding test: the starting switch 103 is pressed down, the push rod of the air cylinder 30 is pushed down, the three-terminal key 102 is pressed down, then the external voltage-resistant equipment is started to start the three-terminal voltage-resistant test, and after the test and the discharge are finished, the buzzer 105 sounds. Thirdly, carrying out two-end voltage withstanding test and three-end voltage withstanding test in sequence: the starting switch 103 is pressed down, the push rod of the air cylinder 30 is pushed down, the two-end key 101 and the three-end key 102 are pressed down simultaneously, then external pressure-resistant equipment is started to start two-end pressure-resistant testing, after the testing and discharging are finished, the control box 10 automatically switches the voltage into a three-end testing state, namely, the positive electrode of the voltage is communicated with a (A) and b (B), the negative electrode of the voltage is communicated with c (C), the three-end testing and discharging are finished, the buzzer 105 sounds, the push rod of the air cylinder 30 is pulled up, and the probe 50 is loosened for testing. That is, the two-end and three-end keys 102 are pressed simultaneously, the controller switches the states, if only the two-end voltage resistance is needed, only the two-end switch key needs to be pressed, the two-end test and the discharge are completed during the operation, the buzzer 105 sounds, and the control box 10 does not switch the three-end states.

Through the detailed explanation of the above embodiment, it can be understood that the utility model can perform two-terminal voltage resistance detection and three-terminal voltage resistance detection on the combined capacitor 130 with three terminals led out, compared with the existing mode of manually clamping the clamp to the capacitor leading-out electrode, the utility model avoids the tedious manual operation, and greatly improves the operation efficiency; the method is stable and reliable, avoids manual misoperation, improves the accuracy of testing, and reduces the reject ratio of products; the risk of electric shock and short circuit is avoided, and potential safety hazards are reduced; two-end withstand voltage detection and three-end withstand voltage detection can be flexibly switched, and the application range is wide.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. The utility model provides a withstand voltage detection tool for three-terminal leading-out combined capacitor which characterized in that includes: the device comprises a control box, a jig bracket, a lifting driving mechanism, a mounting plate and a detecting head; the control box is internally provided with a control circuit, the control circuit is connected with the test voltage of external voltage-resistant equipment, the jig support is fixedly arranged on the control box, the lifting driving mechanism is fixedly arranged on the jig support, the output end of the lifting driving mechanism is fixedly connected with the mounting plate, three rows of detecting heads are fixedly arranged on the mounting plate, and each row of detecting heads is provided with a plurality of detecting heads; the mounting plate is also provided with three rows of connecting wires, and each row of the detecting heads is electrically connected with the control circuit through one row of the connecting wires; the control box is provided with a two-end key and a three-end key which are communicated with the control circuit, the two-end key is used for controlling the control circuit to respectively input the positive pole and the negative pole of the voltage to the two rows of the probe heads, the three-end key is used for controlling the control circuit to respectively input the positive pole of the voltage to the two rows of the probe heads, and the negative pole of the voltage to the other row of the probe heads; the control box is also provided with a starting switch, and the starting switch is electrically connected with the control circuit and used for controlling the lifting driving mechanism to drive the detection head on the mounting plate to descend.

2. The withstand voltage test fixture for a three-terminal-lead combined capacitor according to claim 1, wherein a stop switch is further provided on the control box; the stop switch is electrically connected with the control circuit and is used for controlling the lifting driving mechanism to drive the probe on the mounting plate to ascend.

3. The tool for detecting the withstand voltage of a three-terminal-lead combined capacitor according to claim 1, wherein the tool for detecting the withstand voltage of a three-terminal-lead combined capacitor further comprises: a protective cover; the protective cover is fixedly connected to the mounting plate and covers the outer sides of the detecting heads.

4. The tool for detecting the withstand voltage of a three-terminal-lead combined capacitor according to claim 1, wherein the tool for detecting the withstand voltage of a three-terminal-lead combined capacitor further comprises: a slide block and a slide rail; the output end of the lifting driving mechanism is fixedly connected to the sliding block, the sliding block is connected to the sliding rail in a sliding mode, and the sliding rail is fixedly arranged on the jig support.

5. The withstand voltage test fixture for a three-terminal-lead combined capacitor as set forth in claim 1 or claim 4, wherein said elevating driving mechanism is an air cylinder.

6. The withstand voltage test fixture for a three-terminal-lead combined capacitor according to claim 1, wherein a buzzer is further disposed on the control box, and the buzzer is electrically connected to the control circuit and used for emitting a sound signal after the control circuit finishes discharging.

7. The tool for detecting the withstand voltage of a three-terminal-lead combined capacitor according to claim 1, wherein the tool for detecting the withstand voltage of a three-terminal-lead combined capacitor further comprises: a limit baffle; the limiting baffle is L-shaped and is fixedly arranged on the top surface of the control box.

8. The tool for detecting the withstand voltage of a three-terminal-lead combined capacitor according to claim 1, wherein the tool for detecting the withstand voltage of a three-terminal-lead combined capacitor further comprises: a spring; the spring is sleeved on one end, corresponding to the lower portion of the mounting plate, of the detecting head, the upper end of the spring abuts against the mounting plate, and the lower end of the spring abuts against the detecting head.

9. The tool for detecting the withstand voltage of a three-terminal-lead combined capacitor according to claim 1, wherein the tool for detecting the withstand voltage of a three-terminal-lead combined capacitor further comprises: a limit nut; the limiting nut is fixedly sleeved on one end, opposite to the upper portion of the mounting plate, of the detecting head, and the outer diameter of the limiting nut is larger than the inner diameter of the mounting hole of the mounting plate.

10. The withstand voltage test fixture for a three-terminal-lead combined capacitor according to claim 1, wherein the control box and the fixture support are both made of high-insulation high-hardness bakelite plate materials.

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