High-voltage motor grounding device

Abstract

The utility model relates to a high-voltage motor grounding device, which comprises a motor base, a steel plate and a clamping steel plate, the steel plate is welded on the side surface of the motor base, the clamping steel plate with a groove is arranged in front of the steel plate and is connected with the steel plate through four grounding bolts and spring washers, and after the grounding bolts are tightened, the clamping steel plate is fixed on the steel plate. And the bare twisted section of the grounding wire is embedded into a groove in the middle of the clamping steel plate. Compared with the prior art, the high-voltage motor grounding device has the advantages that the motor base grounding device is optimized, so that the safety protection capability of the motor is effectively ensured, the larger contact area between the grounding wire and the base is ensured, the contact resistance is small, the structural design improvement effect is obvious, and the quality is reliable.

Description

Technical Field

[0001] The utility model relates to a high-voltage motor, in particular to a grounding device for a high-voltage motor. Background Art

[0002] When the high-voltage motor is operating normally, the motor base is not energized. However, it may be energized after the insulation material is damaged or other faults occur, which poses a serious threat to the personal safety of on-site inspection personnel. For this reason, wires are generally used on-site to reliably connect the motor base and the grounding body to achieve the purpose of protecting on-site personnel. At present, a relatively simple method is to weld grounding brackets with threaded holes on both sides of the base to facilitate on-site grounding for users. Figure 1 As shown in FIG. 2 , the grounding device includes a motor base 1 , a grounding label 2 , a grounding strap 3 , a flat washer 4 , a grounding bolt 5 , an O-type connector 6 , and a grounding wire 7 .

[0003] Traditional high-voltage motor grounding devices have relatively high requirements for joints and grounding bolts. If the selection is inappropriate or looseness occurs, the contact resistance of the bolt connection will be large, which may affect the grounding effect and fail to play a protective role. It may cause major personal safety accidents and have an adverse impact on the company's safe production. Summary of the invention

[0004] The utility model aims to provide a high-voltage motor grounding device, which can effectively ensure the motor safety protection capability, ensure that the grounding wire and the base have a large contact area and a small contact resistance.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is: a high-voltage motor grounding device, including a motor base, a steel plate, and a clamping steel plate. The steel plate is welded to the side of the motor base, and a clamping steel plate with a groove is provided in front of the steel plate, and is connected to the steel plate through four grounding bolts and spring washers. After tightening the grounding bolts, the bare twisted section of the grounding wire is embedded in the groove in the middle of the clamping steel plate.

[0006] Furthermore, a grounding sign is fixedly connected to the back of the clamping steel plate by a sign rivet.

[0007] Furthermore, threaded holes are evenly distributed on the four corners of the steel plate.

[0008] Furthermore, the grooves in the middle of the clamping steel plates are arranged in a cross shape, and the cross-section of the grooves is a triangle.

[0009] Furthermore, through holes for installing grounding bolts are distributed on the four corners of the clamping steel plate.

[0010] Furthermore, the bare stranded section of the grounding wire is a bare stranded section of the grounding wire with the insulation protection layer stripped off 10 to 15 mm from the top, and the stripping length is slightly longer than the length of the middle groove of the clamping steel plate.

[0011] The beneficial effects of the utility model are:

[0012] Compared with the prior art, the high-voltage motor grounding device of the utility model effectively ensures the motor safety protection capability by optimizing the motor base grounding device, ensures that the grounding wire and the base have a large contact area, small contact resistance, obvious structural design improvement effect, and reliable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a traditional grounding device;

[0014] Figure 2 This is a schematic diagram of the grounding strap of a traditional grounding device;

[0015] Figure 3 It is a schematic diagram of a high voltage motor grounding device of the utility model;

[0016] Figure 4 This is a front view of the grounding bracket structure of the utility model;

[0017] Figure 5 yes Figure 4 Right view of;

[0018] Figure 6 yes Figure 4 Bottom view of . DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 3 As shown, the high-voltage motor grounding device of the utility model includes a motor base 11, a steel plate 12, a clamping steel plate 13, a spring washer 14, a grounding bolt 15, a grounding label 16, and a label rivet 17.

[0021] The steel plate 12 is welded to the side of the motor frame 11. A clamping steel plate 13 with a groove is provided in front of the steel plate 12 and connected to the steel plate 12 through four grounding bolts 15 and spring washers 14. After tightening the grounding bolts 15, the bare grounding wire is embedded in the groove in the middle of the clamping steel plate 13. The grounding label 16 is fixedly connected to the back of the clamping steel plate 13 with a label rivet 17.

[0022] The steel plate 12 has threaded holes at four corners.

[0023] like Figure 4 As shown in FIGS. 5 and 6 , a groove is provided in the middle of the clamping steel plate 13 , and the grooves are arranged in a cross shape, and the cross section of the grooves is a triangle. Through holes for installing grounding bolts 15 are distributed on the four corners of the clamping steel plate 13 .

[0024] During installation, weld the steel plate 12 with 4 threaded holes on the side of the motor frame 11, peel off the insulation protective layer of the grounding wire 10-15mm away from the top, and the stripping length is slightly longer than the length of the middle groove of the clamping steel plate 13. After rotating the grounding wire to a suitable angle, keep the grounding wire tight so that the grounding wire is close to the clamping steel plate 13, place the spring washer 14 and the grounding bolt 15, tighten the grounding bolt 15, and make the grounding wire bare twisted and embedded in the groove of the clamping steel plate 13. Finally, use the label rivet 17 to fix the grounding label 16.

Claims

1. A high voltage motor grounding device, characterized in that: It includes a motor base, a steel plate, and a clamping steel plate. The steel plate is welded to the side of the motor base. A clamping steel plate with a groove is provided in front of the steel plate, and is connected to the steel plate through four grounding bolts and spring washers. After tightening the grounding bolts, the bare stranded section of the grounding wire is embedded in the groove in the middle of the clamping steel plate.

2. The high voltage motor grounding device according to claim 1, characterized in that: The back side of the clamping steel plate is fixedly connected with a grounding sign by a sign rivet.

3. The high voltage motor grounding device according to claim 1, characterized in that: The steel plate has threaded holes evenly distributed at four corners.

4. The high voltage motor grounding device according to claim 1, characterized in that: The grooves in the middle of the clamping steel plates are arranged in a cross shape, and the cross section of the grooves is a triangle.

5. The high voltage motor grounding device according to claim 1, characterized in that: Through holes for installing grounding bolts are distributed on the four corners of the clamping steel plate.

6. The high voltage motor grounding device according to claim 1, characterized in that: The bare stranded section of the grounding wire is a bare stranded section of the grounding wire with the insulation protection layer stripped off at a distance of 10 to 15 mm from the top, and the stripping length is slightly longer than the length of the middle groove of the clamping steel plate.

Images