Double-cylinder test probe device

Abstract

The utility model discloses a double-cylinder test probe device, which comprises a test probe module, a state indication module, a high-voltage tester and an electric control system connected with the high-voltage tester, the test probe module and the state indication module, and is characterized in that the test probe module comprises double-cylinder test probes arranged corresponding to screws at test points on each to-be-tested area; the double-barrel test probe comprises a hollow barrel-shaped probe fixing seat, a first insulating sleeve arranged in the probe fixing seat in a penetrating manner, an outer barrel positive electrode probe arranged in the probe fixing seat in a penetrating manner, and a barrel probe pressure spring which is positioned in the probe fixing seat, wherein one end of the barrel probe pressure spring is propped against the end part of the outer barrel positive electrode probe, and the other end of the barrel probe pressure spring is propped against the end part of the first insulating sleeve; the second insulating sleeve is arranged in the outer cylinder positive electrode probe in a penetrating manner; the inner cylinder negative electrode probe is arranged in the second insulating sleeve in a penetrating manner; the conducting strip is positioned in the first insulating sleeve; and the inner probe pressure spring is positioned in the first insulating sleeve, and one end of the inner probe pressure spring is propped against the end part of the inner cylinder negative electrode probe while the other end of the inner probe pressure spring is propped against the conducting strip. According to the invention, the contact condition of the detected contact can be detected.

Description

Technical Field

[0001] The utility model relates to a motor high voltage detection device, in particular to a double-tube test probe device. Background Art

[0002] Before leaving the factory, the motors on the market must be subjected to high-voltage testing to test the safety of leakage of each motor product. Most of the existing testing methods require operators to wear high-voltage insulating gloves and hold a high-voltage output rod to perform a reverse high-voltage input test on each possible leakage output point of the product, and read the leakage current through a withstand voltage tester to determine whether the product meets safety requirements. The existing single-needle test may have the problem of poor contact with the object being tested, and cannot effectively feedback the signal of whether the probe is in full contact with the object being tested, resulting in the possibility of missed detection.

[0003] Therefore, it is urgent to solve the above problems. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide a double-barrel test probe device that can detect the contact condition of the contact point being tested.

[0005] Technical solution: To achieve the above purpose, the utility model discloses a double-barrel test probe device, including a probe module arranged corresponding to each test area on the motor to be tested, a status indicator module connected to the probe module and used to display the state of the test point, a high-voltage tester for outputting a test high-voltage signal, and an electric control system connected to the high-voltage tester, the probe module, and the status indicator module, wherein the probe module includes a double-barrel test probe arranged corresponding to a screw at a test point on each test area, and the double-barrel test probe includes a hollow cylindrical A probe fixing seat, a first insulating sleeve inserted into the probe fixing seat, an outer tube positive probe inserted into the probe fixing seat, a tube needle compression spring located in the probe fixing seat and having one end abutting against the end of the outer tube positive probe and the other end abutting against the end of the first insulating sleeve, a second insulating sleeve inserted into the outer tube positive probe, an inner tube negative probe inserted into the second insulating sleeve, a conductive sheet located in the first insulating sleeve and used for connecting to an electric control system, and an inner probe compression spring located in the first insulating sleeve and having one end abutting against the end of the inner tube negative probe and the other end abutting against the conductive sheet.

[0006] A positioning pin hole is arranged opposite to the measuring needle fixing seat, and a positioning pin travel groove is arranged at a corresponding position on the positive electrode probe of the outer tube. The positioning pin passes through the positioning pin hole and extends into the positioning pin travel groove.

[0007] Preferably, the status indication module includes an indication panel, on which there are pictures of the areas to be measured corresponding one by one to the areas to be measured. At each test point on the picture of the area to be measured, there is an indicator light. The positive poles of each indicator light are connected in parallel to the positive pole of the power supply, the negative pole of each indicator light is connected to the outer cylinder positive probe of the binocular test probe device at the test point, and the inner cylinder negative probe is connected to the negative pole of the power supply.

[0008] Furthermore, the areas to be measured of the motor to be measured include the motor brush house cover detection area, the motor rear cover locking screw detection area, the motor handle upper cover screw detection area, and the motor handle lower cover screw detection area. The probe module includes a first probe group for detecting the motor brush house cover detection area, a second probe group for detecting the motor rear cover locking screw detection area, a third probe group for detecting the motor handle upper cover screw detection area, and a fourth probe group for detecting the motor handle lower cover screw detection area.

[0009] Further, the first probe group includes a first fixing plate, a first telescopic cylinder penetrating through the first fixing plate, and a test probe located at the end of the first telescopic cylinder and corresponding to the brush house cover.

[0010] Preferably, the test probe includes a hollow cylindrical detection head, a detection needle penetrating through the detection head, and a probe spring with one end abutted against the end of the detection needle and the other end abutted against the inner cavity of the detection head.

[0011] Furthermore, the second probe group includes a second fixing plate and a binocular test probe horizontally penetrating through the second fixing plate through an insulating locking sleeve.

[0012] Further, the third probe group includes a third fixing plate, a second cylinder vertically penetrating through the third fixing plate, a guide rod vertically penetrating through the third fixing plate, an upper probe fixing plate located at the end of the second cylinder and connected to the guide rod, and binocular test probes uniformly distributed on the upper probe fixing plate through insulating locking sleeves.

[0013] Preferably, a protective cover is arranged outside the third probe group.

[0014] Furthermore, the fourth probe group includes a fourth fixing plate, a lower probe fixing plate located on the fourth fixing plate, and binocular test probes uniformly distributed on the lower probe fixing plate through insulating locking sleeves.

[0015] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: The present utility model can perform multi-point simultaneous testing, and can monitor whether each measured point is reliable (double-point contact between the test head and the object to be measured) by monitoring the status indication module. If the contact of the test point is poor, the high-voltage test will be automatically terminated; The present utility model detects the contact situation of the measured contact point, and the electronic control system will only perform high-low voltage conversion after confirming complete contact. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the double-barrel test probe in the present utility model;

[0017] Figure 2 It is a schematic diagram of the detection area A of the motor brush housing cover in the present utility model;

[0018] Figure 3 It is a schematic diagram of the detection area B of the locking screw of the motor rear cover in the present utility model;

[0019] Figure 4 It is a schematic diagram of the detection area C of the screw of the upper cover of the motor handle in the present utility model

[0020] Figure 5 It is a schematic diagram of the detection area D of the screw of the lower cover of the motor handle in the present utility model;

[0021] Figure 6 It is a schematic structural diagram of the motor to be tested placed under the probe module in the present utility model;

[0022] Figure 7 It is an installation schematic diagram of the probe module in the present utility model Figure 1 ;

[0023] Figure 8 It is an installation schematic diagram of the probe module in the present utility model Figure 2 ;

[0024] Figure 9 It is a schematic structural diagram of the test probe in the present utility model. Detailed implementation manners

[0025] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0026] A double-barrel test probe device of the present utility model includes a high-voltage test table, a status indication module, a probe module, a high-voltage tester, and an electric control system. The high-voltage tester is used to output a test high-voltage signal, and the electric control system is connected to the high-voltage tester, the probe module, and the status indication module.

[0027] Such as Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown in the figure, a probe module is correspondingly arranged for each area to be measured on the motor to be measured. The areas to be measured of the motor to be measured include the motor brush housing cover detection area A, the motor rear cover locking screw detection area B, the motor handle upper cover screw detection area C, and the motor handle lower cover screw detection area D. The probe module includes a first probe group 2 for detecting the motor brush housing cover detection area, a second probe group 3 for detecting the motor rear cover locking screw detection area, a third probe group 4 for detecting the motor handle upper cover screw detection area, and a fourth probe group 5 for detecting the motor handle lower cover screw detection area. As Figure 7 and Figure 8 shown, the first probe group 2 includes a first fixing plate 201, a first telescopic cylinder 202, and a test probe 203. The first fixing plate 201 is fixed on the sliding table for placing the motor to be measured. The first telescopic cylinder 202 is arranged through the first fixing plate. The test probe 203 is located at the end of the first telescopic cylinder. The test probe 203 is arranged in one-to-one correspondence with the number and position of the brush housing cover. As Figure 9 shown, the test probe 203 includes a hollow cylindrical detection head 204, a detection needle 205, and a probe spring 206. The detection needle 205 is arranged through the detection head 204. One end of the probe spring 206 abuts against the end of the detection needle, and the other end abuts against the inner cavity of the detection head. A step surface for abutting is arranged in the inner cavity of the detection head. Since the brush housing cover is not conductive, the single-needle test probe 203 is used. When the position sensor detects that the test probe touches the brush housing cover, the electric control system controls the first telescopic cylinder to stop moving and performs a high-voltage test.

[0028] As Figure 6 、 Figure 7 and Figure 8 shown, the second probe group 3 includes a second fixing plate 301, an insulating locking sleeve 6, and a double-barrel test probe 1. The second fixing plate 301 is fixed on the high-voltage test table. The double-barrel test probe 1 is horizontally arranged through the insulating locking sleeve 6 on the second fixing plate. The third probe group 4 includes a third fixing plate 401, a second cylinder 402, a guide rod 403, an upper probe fixing plate 404, a protective cover 405, an insulating locking sleeve 6, and a double-barrel test probe 1. The third fixing plate 401 is connected to the second fixing plate 301. The second cylinder 402 is vertically arranged through the third fixing plate. The guide rod 403 is vertically arranged through the second fixing plate. The upper probe fixing plate 404 is located at the end of the second cylinder. The upper probe fixing plate 404 is connected to the guide rod. The double-barrel test probe 1 is evenly distributed on the upper probe fixing plate through the insulating locking sleeve 6. The fourth probe group 5 includes a fourth fixing plate 501, a lower probe fixing plate 502, an insulating locking sleeve 6, and a double-barrel test probe 1. The fourth fixing plate 501 is fixed on the sliding table. The lower probe fixing plate 502 is located on the fourth fixing plate 501. The double-barrel test probe 1 is evenly distributed on the lower probe fixing plate through the insulating locking sleeve 6.

[0029] As Figure 1As shown, the double-barrel test probe 1 is correspondingly arranged with the screws at the test points on each area to be tested. The double-barrel test probe 1 includes a hollow cylindrical probe fixing seat 101, a first insulating sleeve 102, an outer barrel positive probe 103, a barrel needle compression spring 104, a second insulating sleeve 105, an inner barrel negative probe 106, a conductive sheet 107, and an inner test needle compression spring 108. The first insulating sleeve 102 is inserted into the probe fixing seat. The outer barrel positive probe 103 is inserted into the probe fixing seat. The barrel needle compression spring 104 is located in the probe fixing seat. One end of the barrel needle compression spring 104 abuts against the end of the outer barrel positive probe, and the other end abuts against the end of the first insulating sleeve. The second insulating sleeve 105 is inserted into the outer barrel positive probe. The inner barrel negative probe 106 is inserted into the second insulating sleeve. The conductive sheet 107 is located in the first insulating sleeve. The conductive sheet 107 is used to connect to the electric control system. The inner test needle compression spring 108 is located in the first insulating sleeve. One end of the inner test needle compression spring 108 abuts against the end of the inner barrel negative probe, and the other end abuts against the conductive sheet. Positioning pin holes 109 are provided on the probe fixing seat 101 at opposite positions. Positioning pin travel grooves 110 are provided at corresponding positions on the outer barrel positive probe 103. The positioning pin passes through the positioning pin hole 109 and extends into the positioning pin travel groove 510 to prevent the outer barrel positive probe 103 from slipping out of the probe fixing seat 101. In the utility model, the double-barrel test probe is used as two contacts of a normally open switch to conduct after contacting the measured point, so as to transmit a signal to the electric control system. The outer barrel positive probe and the inner barrel negative probe of the double-barrel test probe are both retractable probes. The outer barrel positive probe and the inner barrel negative probe are isolated by the second insulating sleeve. Signal voltages (safe voltages) are respectively connected to the outer barrel positive probe and the inner barrel negative probe. Whether the double needles are in contact with the measured object is determined by the conduction signal after the outer barrel positive probe and the inner barrel negative probe are in double contact with the measured object. After receiving the signal, the electric control system automatically switches to the high-voltage test program. After cutting off the signal voltage, a high voltage (500 - 4000V) is output for high-voltage test.

[0030] The status indication module is connected to the probe module. The status indication module is used to display the status of the measured point. The status indication module includes an indication panel. The indication panel is provided with pictures of areas to be tested corresponding one by one to the areas to be tested. Each test point on the picture of the area to be tested is provided with an indicator light. The positive poles of each indicator light are connected in parallel to the positive pole of the output DC 24V power supply. The negative pole of each indicator light is connected to the outer barrel positive probe of the double-barrel test probe device at the test point. The inner barrel negative probe is connected to the negative pole of the output DC 0V power supply. It can enable the probe module to form a switch on-off by contacting the measuring point screw or not to light the corresponding indicator light, so as to achieve the function of monitoring the status of the measured point.

[0031] The high-voltage tester is a conventional existing tester. The performance requirements of the high-voltage tester are as follows: (1) It has an AC / DC high-voltage output of 0 - 5000V; (2) The leakage current can be adjusted and set from 0 - 0 - 20mA; (3) The test time can be freely set from 0.0 - 99S; (4) It has an acoustic-optic alarm output interface; (5) It has a remote start and reset control interface; (6) Connection method: The electric control system is communicatively connected to the remote interface of the high-voltage tester and outputs high voltage according to instructions.

[0032] The high-voltage test table includes a protective cover composed of aluminum profiles + rust-proof resin plates, a table top panel made of insulating plates, an operating table frame welded with square tubes, and an electric control cabinet composed of the operating table frame + peripheral protection plates. The electric control system of the present utility model includes a solenoid valve group for controlling the action of the cylinder. The solenoid valve acts after receiving the signal from the electric control system, inflates and deflates the corresponding cylinder, and realizes the conversion of electric control. The high-voltage module in the entire electric control system drives the high-low voltage switching device through PLC programming, realizing the free switching between the signal low voltage of 5 - 24V and the test high voltage of 500 - 6000V, making the operation safe and the detection more reliable.

[0033] The working process of a double-barrel test probe device of the present utility model is as follows: Connect the power supply and the external air source, set the test parameters in the electric control system, place the motor to be tested on the sliding table, and insert the wire plug of the motor to be tested; Start the test, the working yellow light is lit, clamp and fix the motor. After the sliding table is in place, it sends a signal to the probe module, and multiple groups of probes simultaneously extend to contact the measured points. After the measurement point status indicator receives the signal and confirms that all measured points are in good contact with the probes, it sends a signal to the high-voltage module of the electric control system. The high-voltage module outputs high voltage to the probes and conducts it into the product, and the whole machine automatically enters the high-voltage test state.

[0034] The present utility model can perform multi-point simultaneous tests, and through the monitoring panel, it can monitor whether each measured point is reliable (double-point contact between the test head and the object to be measured). If there is poor contact at the test point, the high-voltage test will be automatically terminated; The present utility model detects the contact condition of the measured contact point. Only after confirming complete contact will the electric control system perform high-low voltage conversion, detecting the voltage conversion from 24V to the test voltage of 500V - 4000V, without manual operation, making the operation safer, the product detection more stable, and having good versatility. As long as the fixture for different objects to be measured is replaced and the corresponding position of the probe is adjusted according to the measured points, the high-voltage resistance detection of products of different specifications can be achieved.

Claims

1. A double-barrel test probe device, characterized in that: The invention comprises a probe module arranged corresponding to each test area on a motor to be tested, a status indication module connected to the probe module and used to display the status of the test point, a high-voltage tester used to output a test high-voltage signal, and an electric control system connected to the high-voltage tester, the probe module, and the status indication module, wherein the probe module comprises a double-barrel test probe (1) arranged corresponding to a screw at a test point on each test area, the double-barrel test probe comprising a hollow cylindrical probe fixing seat (101), a first insulating sleeve (102) inserted into the probe fixing seat, and a second insulating sleeve (102) inserted into the probe fixing seat. An outer cylinder positive pole probe (103) in a measuring needle fixing seat, a cylinder needle compression spring (104) located in the measuring needle fixing seat and having one end abutting against the end of the outer cylinder positive pole probe and the other end abutting against the end of a first insulating sleeve, a second insulating sleeve (105) inserted in the outer cylinder positive pole probe, an inner cylinder negative pole probe (106) inserted in the second insulating sleeve, a conductive sheet (107) located in the first insulating sleeve and used for connecting to an electric control system, and an inner measuring needle compression spring (108) located in the first insulating sleeve and having one end abutting against the end of the inner cylinder negative pole probe and the other end abutting against the conductive sheet.

2. The double-barrel test probe device according to claim 1, characterized in that: The measuring needle fixing seat (101) is provided with positioning pin holes (109) arranged opposite to each other, and the outer cylinder positive electrode probe (103) is provided with positioning pin travel grooves (110) at corresponding positions, and the positioning pin passes through the positioning pin holes (109) and extends into the positioning pin travel grooves (110).

3. The dual-barrel test probe device according to claim 1, characterized in that: The status indication module includes an indication panel, on which pictures of the areas to be tested corresponding one to one to the areas to be tested are provided, and an indicator light is provided at each test point on the pictures of the areas to be tested, the positive pole of each indicator light is connected in parallel to the positive pole of the power supply, the negative pole of each indicator light is connected to the outer cylinder positive pole probe of the double cylinder test probe device at the test point, and the inner cylinder negative pole probe is connected to the negative pole of the power supply.

4. The dual-barrel test probe device according to claim 1, characterized in that: The test area of ​​the motor to be tested comprises a motor brush roof detection area (A), a motor rear cover locking screw detection area (B), a motor handle upper cover screw detection area (C) and a motor handle lower cover screw detection area (D), and the probe module comprises a first probe group (2) for detecting the motor brush roof detection area, a second probe group (3) for detecting the motor rear cover locking screw detection area, a third probe group (4) for detecting the motor handle upper cover screw detection area and a fourth probe group (5) for detecting the motor handle lower cover screw detection area.

5. The double-barrel test probe device according to claim 4, characterized in that: The first measuring needle group (2) comprises a first fixing plate (201), a first telescopic cylinder (202) penetrating the first fixing plate, and a testing probe (203) located at the end of the first telescopic cylinder and arranged corresponding to the brush roof.

6. The double-barrel test probe device according to claim 5, characterized in that: The test probe (203) comprises a hollow cylindrical detection head (204), a detection needle (205) inserted into the detection head, and a probe spring (206) with one end abutting against the end of the detection needle and the other end abutting against the inner cavity of the detection head.

7. The dual-barrel test probe device according to claim 4, characterized in that: The second measuring needle group (3) comprises a second fixing plate (301) and a double-barreled testing probe (1) horizontally inserted through the second fixing plate via an insulating locking sleeve (6).

8. The dual-barrel test probe device according to claim 4, characterized in that: The third measuring needle group (4) comprises a third fixing plate (401), a second cylinder (402) vertically penetrating the third fixing plate, a guide rod (403) vertically penetrating the third fixing plate, an upper measuring needle fixing plate (404) located at the end of the second cylinder and connected to the guide rod, and double-barreled test probes (1) uniformly distributed on the upper measuring needle fixing plate via an insulating locking sleeve (6).

9. The dual-tube test probe device according to claim 8, characterized in that: A protective cover (405) is provided on the outer side of the third measuring needle group (4).

10. The dual-tube test probe device according to claim 4, characterized in that: The fourth measuring needle group (5) comprises a fourth fixing plate (501), a lower measuring needle fixing plate (502) located on the fourth fixing plate, and a double-barreled test probe (1) evenly distributed on the lower measuring needle fixing plate via an insulating locking sleeve (6).

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