Withstand voltage turn-to-turn impact test instrument convenient for cable storage

Abstract

The utility model belongs to the technical field of test instruments, and particularly relates to a withstand voltage inter-turn impact test instrument convenient for cable storage, which comprises a shell, a test device is arranged on the front surface of the shell, the test device comprises an anti-separation unit, a bunching unit and a test unit, and the test unit is arranged at the top of the shell. According to the withstand voltage inter-turn impact test instrument convenient for cable storage, the anti-separation unit is arranged, and a knob at the top of a threaded rod is rotated to drive the threaded rod to rotate to be in threaded connection with a sleeve, so that the threaded rod drives a lower pressing plate to move downwards to be matched with an upper pressing plate, and a test cable is pressed and fixed; therefore, the test cable is prevented from being separated from the shell after being pulled to affect normal work of the test instrument, and the problem that in the prior art, in the motor detection process, due to the fact that the test cable is not provided with a fixing device, the cable is prone to being pulled by the outside, the cable is separated from the tester, and the detection efficiency is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing instruments, in particular to a voltage-withstand turn-to-turn impact testing instrument which is convenient for storing cables. Background Art

[0002] The electrical parts of electromechanical products such as motors, power tools, transformers, and relays are mainly coil windings. Due to the inconsistency of coil insulation structure and insulation materials, especially the differences in coil manufacturing process, various coil products may have insulation weak links such as insulation damage between turns and layers in the coil windings to varying degrees during the manufacturing process. Before being broken down or exposed under certain conditions, the inherent inductance L, quality inductance Q value, and resistance value of the coil or winding basically do not change significantly. Conventional measurement methods such as testing the voltage at both ends of the coil after passing a large current, using a milliohmmeter, a bridge, etc. are usually unable to identify it. The reason is that the test voltage using these conventional methods cannot be high enough to break down the insulation damage part, which buries the hidden trouble of such coil products and often leads to damage or burning of the coil in the future.

[0003] The existing inter-turn impulse withstand voltage test equipment is mainly analog equipment, which uses a gas-filled hydrogen brake tube for high-voltage pulse control. When the machine is turned on, the filament needs to be preheated for 10 minutes before it can work. Its reliability is limited by the working life of the hydrogen brake tube, and it will be damaged in about 1 year, so its service life is short. In addition, the analog instrument samples the impulse waveform and directly sends it to the oscilloscope for alternating display. The display frequency is affected by the oscilloscope indicators. Due to the low refresh frequency, there will be jitter, which can easily cause visual fatigue to the operator. Moreover, the analog instrument cannot automatically process the displayed waveform, and can only judge whether it is qualified or unqualified by observing the overlap of the waveform with the naked eye. It is highly dependent on the quality of the operator, which can easily lead to misjudgment and low production efficiency.

[0004] For example, in the turn-to-turn impulse withstand voltage tester disclosed in Chinese patent CN200953040Y, DSP processes the digital waveform to perform waveform area comparison, waveform difference area comparison, waveform phase comparison, corona discharge amount comparison or peak value comparison, and automatically determines whether the tested product is qualified, thereby effectively avoiding the disadvantages of easy misjudgment and low production efficiency caused by manual observation of waveforms with the naked eye.

[0005] However, during the motor detection process of the device, the test cable has no fixing device, which makes the cable easily pulled by the outside world, causing the cable to be separated from the tester, thereby affecting the detection efficiency.

[0006] For this reason, we urgently need to provide a voltage withstand turn-to-turn impulse testing instrument that is convenient for cable storage. Utility Model Content

[0007] The purpose of the utility model is to provide a voltage-withstand turn-to-turn impact test instrument that is convenient for cable storage, so as to solve the problem raised in the above-mentioned background technology that during the motor detection process, the test cable has no fixing device, which makes the cable easily pulled by the outside world and causes the cable to be separated from the tester, thereby affecting the detection efficiency.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a voltage withstand turn-to-turn impact tester that is convenient for storing cables, comprising a shell, and a test device is arranged on the front side of the shell.

[0009] The testing device comprises an anti-separation unit, a wiring harness unit and a testing unit. The anti-separation unit is arranged at the front end of a shell, the wiring harness unit is arranged at the front end of the anti-separation unit, and the testing unit is arranged at the top of the shell.

[0010] The anti-separation unit includes a fixed rod, a support plate, a fixed frame, a threading sleeve, a sleeve, a threaded rod, an upper pressure plate and a lower pressure plate. The fixed rod is fixedly installed on the left and right sides of the front end of the bottom of the shell, the support plate is fixedly installed on the bottom of the fixed rod, the fixed frame is fixedly installed on the front of the support plate, the threading sleeve is fixedly installed on the top of the fixed frame, the sleeve is fixedly installed on the top of the threading sleeve, the threaded rod is threadedly connected to the inside of the sleeve and extends to the inside of the threading sleeve, the upper pressure plate is rotatably connected to the bottom of the threaded rod, and the lower pressure plate is fixedly installed on the bottom of the sleeve.

[0011] Preferably, the wire bundling unit comprises a connecting rod and a wire bundling roller, the connecting rod is fixedly mounted on a front end of a fixing frame, and the wire bundling roller is fixedly mounted on an outer side of the connecting rod.

[0012] Preferably, the test unit includes a withstand voltage tester, a withstand voltage test alarm, an inter-turn impact tester, a withstand voltage time display, an inter-turn impact selection switch, a test pass display light, a test fail display light, a motor to be tested, a magnet adsorption plate, a grounding wire terminal, a motor terminal and a test cable, the withstand voltage tester is installed at the upper left top of the shell, the withstand voltage test alarm is installed on the back of the shell, the inter-turn impact tester is installed at the upper right top of the shell, the withstand voltage time display is installed on the left top of the shell, the inter-turn impact selection switch is installed in the middle of the top of the shell, the test pass display light is installed at the front end of the top of the shell, the test fail display light is installed at the top of the shell at the front end of the test pass display light, the motor to be tested is installed at the front end of the shell, the magnet adsorption plate is installed on the back of the motor to be tested, the grounding wire terminal is connected to the front end of the shell, the motor terminal is connected to the right end of the motor to be tested, and the test cable is connected to the front end of the shell.

[0013] Preferably, six groups of test terminals are provided at the front end of the shell, and the number of the threading sleeves is six. The six groups of test cables are fixed by the six groups of threading sleeves to prevent the test cables from being pulled and separated from the shell.

[0014] Preferably, the number of the harness units is six and they are distributed on the front of the fixing frame. By providing a plurality of harness units, when performing multiple groups of tests, multiple groups of test cables can be stored to prevent the test cables from being too long and scattered on the ground.

[0015] Preferably, the sleeve is provided with an internal thread, and a knob is installed on the top of the threaded rod. The threaded rod is driven to rotate and connected with the sleeve thread by turning the knob, so that the threaded rod drives the lower pressure plate to move downward and cooperate with the upper pressure plate to tighten and fix the test cable.

[0016] Preferably, a rubber pad is installed on one side adjacent to the upper pressing plate and the lower pressing plate, so as to prevent the upper pressing plate and the lower pressing plate from pressing the test cable tightly and thereby causing scratches on the surface of the test cable.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The voltage-withstand turn-to-turn impact test instrument, which is convenient for storing cables, is provided with an anti-detachment unit. The knob on the top of the threaded rod is rotated to drive the threaded rod to rotate and connect with the sleeve thread, so that the threaded rod drives the lower pressure plate to move downward and cooperate with the upper pressure plate to press and fix the test cable, thereby preventing the test cable from being separated from the shell after being pulled, affecting the normal operation of the test instrument. This solves the problem raised in the background technology that during the motor detection process, the test cable does not have a fixing device, which makes the cable easily pulled by the outside world and causes the cable to be separated from the tester, thereby affecting the detection efficiency.

[0019] 2. The voltage withstand turn-to-turn impact tester, which is convenient for cable storage, is provided with a cable bundle unit. When the test cable is too long, the excess test cable is wound in the cable bundle roller to achieve the storage of the test cable and prevent the test cable from being scattered on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the connection between the anti-separation unit and the wiring harness unit of the utility model;

[0022] Figure 3 It is a schematic diagram of the partial structure of the anti-separation unit of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the connection between the motor to be tested and the magnet adsorption plate of the utility model;

[0024] Figure 5 It is a top view of the test unit of the utility model.

[0025] In the figure: 1. Shell; 201. Fixing rod; 202. Support plate; 203. Fixing frame; 204. Threading sleeve; 205. Sleeve; 206. Threaded rod; 207. Upper pressure plate; 208. Lower pressure plate; 301. Connecting rod; 302. Cable roller; 401. Withstand voltage tester; 402. Withstand voltage test alarm; 403. Turn-to-turn impact tester; 404. Withstand voltage time display; 405. Turn-to-turn impact selection switch; 406. Test pass indicator light; 407. Test fail indicator light; 408. Motor to be tested; 409. Magnet adsorption plate; 410. Ground wire terminal; 411. Motor terminal; 412. Test cable. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0028] Embodiment 1:

[0029] A voltage withstand turn-to-turn impact tester convenient for storing cables comprises a shell 1, and a test device is arranged on the front of the shell 1.

[0030] The testing device includes an anti-detachment unit, a wiring harness unit and a testing unit. The anti-detachment unit is arranged at the front end of the shell 1, and the wiring harness unit is arranged at the front end of the anti-detachment unit. There are six wiring harness units, which are distributed on the front of the fixed frame 203. By setting up multiple wiring harness units, when performing multiple groups of tests, multiple groups of test cables 412 can be stored to prevent the test cables 412 from being too long and scattered on the ground. The testing unit is arranged on the top of the shell 1.

[0031] The anti-detachment unit includes a fixing rod 201, a support plate 202, a fixing frame 203, a threading sleeve 204, a sleeve 205, a threaded rod 206, an upper pressure plate 207 and a lower pressure plate 208. The fixing rod 201 is fixedly installed on the left and right sides of the front end of the bottom of the shell 1, the support plate 202 is fixedly installed on the bottom of the fixing rod 201, the fixing frame 203 is fixedly installed on the front of the support plate 202, and the threading sleeve 204 is fixedly installed on the top of the fixing frame 203. Six groups of test terminals are arranged at the front end of the shell 1, and the number of threading sleeves 204 is six. Six groups of test cables 412 are fixed by six groups of threading sleeves 204 to avoid test The cable 412 is pulled and separated from the shell 1, and the sleeve 205 is fixedly installed on the top of the threading sleeve 204. The sleeve 205 is provided with an internal thread, and a knob is installed on the top of the threaded rod 206. By turning the knob, the threaded rod 206 is driven to rotate and threadedly connected to the sleeve 205, so that the threaded rod 206 drives the lower pressure plate 208 to move downward and cooperate with the upper pressure plate 207 to tighten and fix the test cable 412. The threaded rod 206 is threadedly connected to the inside of the sleeve 205 and extends to the inside of the threading sleeve 204. The upper pressure plate 207 is rotatably connected to the bottom of the threaded rod 206, and the lower pressure plate 208 is fixedly installed at the bottom inside the sleeve 205.

[0032] The test unit includes a withstand voltage tester 401, a withstand voltage test alarm 402, an inter-turn impact tester 403, a withstand voltage time display 404, an inter-turn impact selection switch 405, a test pass indicator 406, a test fail indicator 407, a motor to be tested 408, a magnet adsorption plate 409, a grounding terminal 410, a motor terminal 411 and a test cable 412. The withstand voltage tester 401 is installed on the upper left of the top of the shell 1, the withstand voltage test alarm 402 is installed on the back of the shell 1, the inter-turn impact tester 403 is installed on the upper right of the top of the shell 1, the withstand voltage time display 404 is installed on the left side of the top of the shell 1, the withstand voltage time display 404 can freely set the withstand voltage time, when the withstand voltage time is up, the withstand voltage test alarm 402 gives an audible and visual alarm to show that the withstand voltage time is up, the inter-turn impact selection switch 405 is installed in the middle of the top of the shell 1, each group of test targets can be manually selected one by one through the inter-turn impact selection switch 405, and the test pass indicator 406 is installed on the upper left of the top of the shell 1. It is installed at the front end of the top of the shell 1. The test failure display light 407 is installed at the top of the shell 1 and is located at the front end of the test pass display light 406. During the withstand voltage time, if any motor 408 to be tested passes the test and its corresponding test pass display light 406 lights up, it is judged to be qualified. Otherwise, if the test failure display light 407 lights up, it is judged to be unqualified. The motor 408 to be tested is installed at the front end of the shell 1, and the magnet adsorption plate 409 is installed on the back of the motor 408 to be tested. The grounding wire terminal 410 is connected to the front end of the shell 1, and the motor terminal 411 is connected to the right end of the motor 408 to be tested. The motor terminal 411 is connected to the test cable 412 through a quick clamp, which facilitates the connection between each motor terminal 411 of the motor 408 to be tested and the test cable 412. The test cable 412 is connected to the front end of the shell 1. Six groups of test cables 412 are arranged at the front end of the shell 1, wherein the grounding wire terminal 410 in each group of test wires is provided with a strong magnet, which can conveniently make the grounding wire terminal 410 contact and connect with the motor stator.

[0033] Embodiment 2:

[0034] On the basis of the first embodiment: the wire bundling unit comprises a connecting rod 301 and a wire bundling roller 302 . The connecting rod 301 is fixedly mounted on the front end of the fixing frame 203 , and the wire bundling roller 302 is fixedly mounted on the outside of the connecting rod 301 .

[0035] Embodiment three:

[0036] On the basis of the first embodiment: a rubber pad is installed on one side adjacent to the upper pressing plate 207 and the lower pressing plate 208 to prevent the surface of the test cable 412 from being scratched when the upper pressing plate 207 and the lower pressing plate 208 press the test cable 412 tightly.

[0037] The test unit includes a withstand voltage tester 401, a withstand voltage test alarm 402, a turn-to-turn impact tester 403, a withstand voltage time display 404, a turn-to-turn impact selection switch 405, a test pass indicator light 406, and a test fail indicator light 407, all of which are products directly available on the market.

[0038] When in use, the test cable 412 is connected to one end of the shell 1, and the other end is clamped to the motor terminal 411 by a quick clamp, so that each motor terminal 411 of the motor 408 to be tested is connected to the test cable 412, and then the test is carried out through the voltage tester 401 and the turn-to-turn impact tester 403. When the test cable 412 is too long, the excess test cable 412 is wound in the cable roller 302, and then the knob on the top of the threaded rod 206 is turned to drive the threaded rod 206 to rotate and threadedly connect with the sleeve 205, so that the threaded rod 206 drives the lower pressure plate 208 to move downward and cooperate with the upper pressure plate 207 to press and fix the test cable 412, thereby preventing the test cable 412 from being pulled and causing the test cable 412 to detach from the shell 1, affecting the normal operation of the test instrument.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A voltage withstand turn-to-turn impulse tester that is convenient for storing cables, comprising a housing (1), characterized in that: A testing device is arranged on the front side of the housing (1); The testing device comprises an anti-separation unit, a wiring harness unit and a testing unit, wherein the anti-separation unit is arranged at the front end of the housing (1), the wiring harness unit is arranged at the front end of the anti-separation unit, and the testing unit is arranged at the top of the housing (1); The anti-separation unit comprises a fixed rod (201), a support plate (202), a fixed frame (203), a threading sleeve (204), a sleeve (205), a threaded rod (206), an upper pressure plate (207) and a lower pressure plate (208); the fixed rod (201) is fixedly mounted on the left and right sides of the front end of the bottom of the shell (1); the support plate (202) is fixedly mounted on the bottom of the fixed rod (201); the fixed frame (203) is fixedly mounted on the front of the support plate (202); the threading sleeve (204) is fixedly mounted on the top of the fixed frame (203); the sleeve (205) is fixedly mounted on the top of the threading sleeve (204); the threaded rod (206) is threadedly connected to the inside of the sleeve (205) and extends to the inside of the threading sleeve (204); the upper pressure plate (207) is rotatably connected to the bottom of the threaded rod (206); and the lower pressure plate (208) is fixedly mounted on the bottom of the sleeve (205).

2. The voltage withstand turn-to-turn impact tester for facilitating cable storage according to claim 1, characterized in that: The wire bundling unit comprises a connecting rod (301) and a wire bundling roller (302); the connecting rod (301) is fixedly mounted on the front end of a fixing frame (203); and the wire bundling roller (302) is fixedly mounted on the outside of the connecting rod (301).

3. The voltage withstand turn-to-turn impact tester for facilitating cable storage according to claim 1, characterized in that: The test unit comprises a withstand voltage tester (401), a withstand voltage test alarm (402), an inter-turn impact tester (403), a withstand voltage time display (404), an inter-turn impact selection switch (405), a test pass display light (406), a test fail display light (407), a motor to be tested (408), a magnet adsorption plate (409), a grounding terminal (410), a motor terminal (411) and a test cable (412). The withstand voltage tester (401) is installed on the upper left of the top of the housing (1), the withstand voltage test alarm (402) is installed on the back of the housing (1), the inter-turn impact tester (403) is installed on the upper right of the top of the housing (1), and the withstand voltage time display (404) is installed on the back of the housing (1). The display (404) is installed on the left side of the top of the shell (1), the inter-turn impact selection switch (405) is installed in the middle of the top of the shell (1), the test pass display light (406) is installed at the front end of the top of the shell (1), the test failure display light (407) is installed at the top of the shell (1) and is located in front of the test pass display light (406), the motor to be tested (408) is installed at the front end of the shell (1), the magnet adsorption plate (409) is installed on the back of the motor to be tested (408), the grounding wire terminal (410) is connected to the front end of the shell (1), the motor terminal (411) is connected to the right end of the motor to be tested (408), and the test cable (412) is connected to the front end of the shell (1).

4. The voltage withstand turn-to-turn impact tester for facilitating cable storage according to claim 1, characterized in that: The front end of the housing (1) is provided with six groups of test ends, and the number of the threading sleeves (204) is six.

5. The voltage withstand turn-to-turn impulse tester for facilitating cable storage according to claim 2, characterized in that: The number of the wiring harness units is six and they are distributed on the front of the fixing frame (203), and a plurality of wiring harness units are provided.

6. The voltage withstand turn-to-turn impact tester for facilitating cable storage according to claim 1, characterized in that: The sleeve (205) is provided with an internal thread, and a knob is installed on the top of the threaded rod (206).

7. The voltage withstand turn-to-turn impact tester for facilitating cable storage according to claim 1, characterized in that: A rubber pad is installed on one side adjacent to the upper pressing plate (207) and the lower pressing plate (208).

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