Insulation detection tool for ceramic-plated shaft

Abstract

The utility model relates to an insulation detection tool for a ceramic-plated shaft, which comprises a multimeter for detecting current and a main body mechanism, the two annular metal bodies are respectively sleeved on the two ceramic plating layers on the same motor shaft, two ends of the two connecting wires are respectively and electrically connected with the annular metal bodies and the multimeter, the annular metal bodies are in one-to-one correspondence with the connecting wires, the motor shaft is electrified, a detector observes whether the multimeter has current or not, and if the multimeter does not react, the multimeter is connected with the two annular metal bodies. The two ceramic plating layers are qualified in insulation and vice versa, the annular metal body is in surface contact, the possibility that a single point of a probe cannot be tested is avoided, and the detection efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to an insulation detection tool for a ceramic-plated shaft. Background Art

[0002] During the operation of the motor, shaft voltage and shaft current may be generated, which may cause corrosion to the bearings. Figure 1 The figure shows a schematic diagram of a conventional motor shaft structure. A ceramic coating 2 is provided at the bearing position of the motor shaft 1. This coating provides electrical insulation, resisting high-voltage discharge and fundamentally eliminating electrical corrosion, thereby improving bearing reliability and increasing equipment operating time. After the shaft is ceramic-coated, to ensure effective insulation, the motor shaft 1 must undergo insulation testing. The ceramic coating 2 is an annular structure. In conventional insulation testing, a multimeter probe is continuously repositioned on the ceramic coating 2. However, this constant repositioning of the probe on the ceramic coating 2 results in low efficiency and makes rapid, large-scale testing difficult. Utility Model Content

[0003] The main purpose of the utility model is to provide an insulation detection tool for a ceramic-plated shaft, so as to solve the problems in the prior art of low insulation detection efficiency and difficulty in realizing mass detection.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an insulation detection tool for a ceramic-plated shaft, comprising a multimeter for detecting current, including a main body mechanism;

[0005] There are two main bodies, each of which includes a connecting wire and an annular metal body.

[0006] The two ends of the connecting wire are electrically connected to the annular metal body and the multimeter respectively;

[0007] The two annular metal bodies both have notches and are detachably arranged at two ceramic-plated layers on the motor shaft.

[0008] Preferably, the main body mechanism further includes a first bolt;

[0009] An axial receiving groove is provided at one end of the annular metal body, a horizontal plate is fixedly provided at the bottom of the receiving groove, and a first threaded hole is provided on the horizontal plate;

[0010] A second threaded hole is provided at the other end of the annular metal body. The first threaded hole and the second threaded hole are coaxially arranged. The first bolt passes through the first threaded hole and is threadedly connected to the second threaded hole.

[0011] Preferably, the first threaded hole and the second threaded hole are through holes.

[0012] Preferably, the main body mechanism further includes a second bolt, and a third threaded hole is provided on the ring wall of the annular metal body, and the second bolt is threadedly connected to the third threaded hole.

[0013] Preferably, one end of the connecting wire is electrically connected to a pin for being plugged into the multimeter, and the other end is electrically connected to a clip, which can be clamped on any second bolt.

[0014] Preferably, the third threaded hole is a blind hole.

[0015] The beneficial effects of the above scheme are:

[0016] Two annular metal bodies are respectively sleeved on two ceramic-plated layers installed on the same motor shaft. The two ends of the two connecting wires are electrically connected to the annular metal bodies and the multimeter respectively. The annular metal bodies and the connecting wires correspond one to one. The motor shaft is energized and the inspection personnel observe whether there is current on the multimeter. If the multimeter has no response, it can indicate that the insulation of the two ceramic-plated layers is qualified, and vice versa. The annular metal body is in surface contact, which avoids the possibility that the probe cannot test a single point, thereby further improving the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the motor shaft structure of the prior art;

[0019] Figure 2 This is a schematic diagram of the structure of the annular metal body of the utility model being installed on the motor shaft;

[0020] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure;

[0021] Figure 4 It is a schematic diagram of the structure of a multimeter in the prior art;

[0022] Figure 5 It is a structural diagram of the connecting wire of the utility model.

[0023] Description of Reference Numerals

[0024] 1. Motor shaft; 2. Ceramic coating; 3. Multimeter;

[0025] 11. Connecting wire; 12. Annular metal body; 120. Notch; 13. First bolt; 14. Receiving groove; 15. Horizontal plate; 16. First threaded hole; 17. Second threaded hole; 18. Second bolt; 19. Third threaded hole;

[0026] 20. Pin;

[0027] 30. Clip. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Example

[0030] like Figure 2-Figure 5 As shown, this embodiment provides an insulation detection tool for a ceramic-plated shaft, including a multimeter 3 for detecting current and a main body mechanism (not shown). Figure 5 As shown, the multimeter is a multifunctional, multi-range measuring instrument, which is mainly used to measure voltage, current and resistance. It can select appropriate measuring gears according to different needs, such as DC current, DC voltage, AC current, AC voltage, resistance, etc. The multimeter 3 adopts the existing technology, so it will not be described in detail. There are two main body mechanisms, and each main body mechanism includes a connecting wire 11 and an annular metal body 12. The two ends of the connecting wire 11 are electrically connected to the annular metal body 12 and the multimeter 3 respectively. The two annular metal bodies 12 both have a notch 120, and the two annular metal bodies 12 are respectively detachably arranged at the two ceramic coating layers 2 on the motor shaft 1.

[0031] The two annular metal bodies 12 are respectively mounted on the two ceramic coatings 2 on the same motor shaft 1. The two ends of the two connecting wires 11 are electrically connected to the annular metal bodies 12 and the multimeter 3 respectively. The annular metal bodies 12 correspond to the connecting wires 11 one by one. The motor shaft 1 is powered on and the inspector observes whether there is current on the multimeter 3. If the multimeter 3 has no response, it can be indicated that the insulation of the two ceramic coatings 2 is qualified, and vice versa. The annular metal body 12 is in surface contact, which avoids the possibility that the probe cannot test a single point, thereby further improving the detection efficiency.

[0032] like Figure 3 As shown, the main body mechanism also includes a first bolt 13. An axial receiving groove 14 is provided at one end of the annular metal body 12. A horizontal plate 15 is fixedly provided at the bottom of the receiving groove 14. The horizontal plate 15 has a first threaded hole 16. A second threaded hole 17 is provided at the other end of the annular metal body 12. The first threaded hole 16 and the second threaded hole 17 are coaxially arranged. The first bolt 13 passes through the first threaded hole 16 and is screwed into the second threaded hole 17. Both the first threaded hole 16 and the second threaded hole 17 are through holes. The first bolt 13 passes through the first threaded hole 16 and is screwed into the second threaded hole 17, which facilitates the disassembly and assembly of the annular metal body 12 onto the ceramic coating 2.

[0033] The main mechanism also includes a second bolt 18. A third threaded hole 19 is defined in the wall of the annular metal body 12, and the second bolt 18 is threadedly engaged with the third threaded hole 19. One end of the connecting wire 11 is electrically connected to a pin 20 on the multimeter 3, and the other end of the connecting wire 11 is electrically connected to a clip 30 that can be attached to any second bolt 18. This facilitates the electrical connection between the connecting wire 11 and the annular metal body 12.

[0034] The third threaded hole 19 is a blind hole to prevent the second bolt 18 from scratching the ceramic coating 2.

[0035] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. An insulation testing tool for a ceramic-plated shaft, comprising a multimeter for detecting current, characterized in that: Also includes: Main body mechanism, the number of said main body mechanism is two, and said main body mechanism comprises a connecting line and an annular metal body; The two ends of the connecting wire are electrically connected to the annular metal body and the multimeter respectively; The two annular metal bodies both have a notch portion and are detachably arranged at two ceramic-plated layers on the motor shaft.

2. The insulation detection tool for a ceramic-plated shaft according to claim 1, characterized in that: The main body mechanism further includes a first bolt; An axial receiving groove is provided at one end of the annular metal body, a horizontal plate is fixedly provided at the bottom of the receiving groove, and a first threaded hole is provided on the horizontal plate; A second threaded hole is formed at the other end of the annular metal body. The first threaded hole and the second threaded hole are coaxially arranged. The first bolt passes through the first threaded hole and is threadedly connected to the second threaded hole.

3. The insulation detection tool for a ceramic-plated shaft according to claim 2, characterized in that: The first threaded hole and the second threaded hole are both through holes.

4. The insulation detection tool for a ceramic-plated shaft according to claim 1, characterized in that: The main body mechanism further includes a second bolt. A third threaded hole is provided on the annular wall of the annular metal body, and the second bolt is threadedly connected to the third threaded hole.

5. The insulation detection tool for a ceramic-plated shaft according to claim 4, characterized in that: One end of the connecting wire is electrically connected to a pin for being plugged into the multimeter, and the other end is electrically connected to a clip, and the clip can be clamped on any of the second bolts.

6. The insulation detection tool for a ceramic-plated shaft according to claim 4, characterized in that: The third threaded hole is a blind hole.

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