Three-phase motor winding quick detection device

Abstract

The utility model discloses a three-phase motor coil quick detection device, comprising an insulating base, a conductive contact plate arranged on the insulating base, an insulating spacer arranged on the conductive contact plate for dividing it into a plurality of independent areas, and an insulating pressure plate arranged above the insulating base and corresponding to the conductive contact plate for lifting and pressing; each independent area in the conductive contact plate is electrically connected to an electrical property detector. The utility model realizes accurate positioning of the head end of the coil, and improves detection efficiency and detection accuracy.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor detection, and in particular relates to a three-phase motor winding package rapid detection device. Background Art

[0002] When testing the coils of a three-phase motor, you can determine whether the motor is normal by measuring the resistance between the three-phase windings. For a three-phase asynchronous motor, it usually consists of three sets of coils, which may be connected in star (Y connection) or triangle (Δ connection). Regardless of the connection method, you can determine whether the three-phase resistance is balanced by measuring the mutual resistance between the three head ends (U1, V1, W1).

[0003] The test includes the following steps: Select the appropriate multimeter gear: Set the multimeter to the resistance 200Ω gear, so that the approximate resistance of each coil can be measured. Make measurements: Use the red and black test leads of the multimeter to measure the resistance between (U1, V1), (V1, W1), and (U1, W1) respectively. Under normal circumstances, there should be a small mutual error between these three resistance values, generally within 2%, indicating that the motor resistance is balanced and can be considered normal. Determine the motor status: If the error between the measured resistance values ​​reaches more than 10%, it can be determined that the motor may be faulty. If the error is between 2% and 10%, it may be necessary to consider whether the coil is produced by the original factory, or whether there is an unbalanced resistance after repair. Further inspection: In addition to the coil resistance, the insulation resistance of the motor needs to be measured to ensure the safe operation of the motor. Set the multimeter to the resistance MΩ gear, place one test lead on any terminal of U1, V1, and W1, and the other test lead on the motor housing. If the measured resistance is greater than the set value, it indicates that the motor insulation is good and can be used normally; if it is less than the set value, it indicates that the motor insulation performance is poor, there may be safety risks, and it should not be used.

[0004] The existing detection device needs to be equipped with three manual clamps to clamp and position the three head ends of the three coils respectively. The clamping and positioning is relatively time-consuming, and there are problems of clamping errors or poor contact, which affect the detection results. Utility Model Content

[0005] The purpose of the utility model is to solve the above technical problems and provide a three-phase motor coil quick detection device, so as to realize an integrated design detection device, accurately locate the head end of the coil, and improve the detection efficiency and detection accuracy. In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A three-phase motor winding rapid detection device comprises an insulating base, a conductive contact plate arranged on the insulating base, an insulating spacer arranged on the conductive contact plate for dividing the conductive contact plate into a plurality of independent areas, and an insulating pressure plate arranged above the insulating base and corresponding to the lifting and lowering of the conductive contact plate; each independent area in the conductive contact plate is electrically connected to an electrical detector.

[0007] Specifically, the insulating base has an inner arc edge adapted to the outer contour of the motor, one side of the insulating base is provided with the inner arc edge, the other side of the insulating base is provided with an outer arc edge, and the inner arc edge and the outer arc edge are arranged concentrically.

[0008] Specifically, the total height of the insulating base and the conductive contact plate is adapted to the extension height of the head end of the coil of the motor.

[0009] Specifically, the conductive contact plate is detachably connected and fixed to the insulating base.

[0010] Specifically, the conductive contact plate has an inner arc end corresponding to the inner arc edge, an inner arc end is arranged on one side of the conductive contact plate, and an outer arc end is arranged on the other end of the conductive contact plate, the inner arc end is arranged flush with the inner arc edge, and the outer arc end is arranged flush with the outer arc edge.

[0011] Specifically, each independent area of ​​the conductive contact plate is provided with a connection block, the connection block is connected to the electrical property detector through a wire, and the insulating pressure plate is arranged to avoid a plurality of connection blocks.

[0012] Specifically, the insulating pressure plate is connected to a driving member, the side of the insulating pressure plate is arranged on the side of the stand, the stand is provided with a slide rail, and the insulating pressure plate is connected to the slide rail in a sliding manner.

[0013] Compared with the prior art, the beneficial effects of the three-phase motor winding package rapid detection device of the utility model are mainly reflected in:

[0014] By setting up a conductive contact plate in conjunction with an insulating pressure plate, the three head ends of the coil of the three-phase motor can be simultaneously crimped and positioned, thereby improving the positioning efficiency and positioning stability of the head ends of the coil; the conductive contact plate is divided into several independent areas, thereby facilitating the connection of each independent area to an electrical tester, and the electrical tester detects the resistance between each independent area, accurately determines the resistance between each head end of the coil, and ensures the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a photo of the detection device of the embodiment of the utility model;

[0016] The numbers in the figure represent:

[0017] 1 insulating base, 11 inner arc edge, 12 outer arc edge, 2 conductive contact plate, 21 independent area, 22 inner arc end, 23 outer arc end, 24 connecting block, 3 insulating spacer, 4 insulating pressure plate, 41 stand. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present utility model are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Example:

[0020] Reference Figure 1 As shown, an embodiment of the present application provides a three-phase motor winding rapid detection device, including an insulating base 1, a conductive contact plate 2 arranged on the insulating base 1, an insulating spacer 3 arranged on the conductive contact plate 2 for dividing it into a plurality of independent areas 21, and an insulating pressure plate 4 arranged above the insulating base 3 and corresponding to the conductive contact plate 2 for lifting and pressing; each independent area 21 in the conductive contact plate 2 is electrically connected to an electrical detector (not shown in the figure).

[0021] The insulating base 1 has an inner arc edge 11 adapted to the outer contour of the motor, and the inner arc edge 11 is provided on one side of the insulating base 1, and the outer arc edge 12 is provided on the other side of the insulating base 1. The inner arc edge 11 and the outer arc edge 12 are arranged concentrically, and the outer contour of the motor is close to the position of the inner arc edge 11, and then the three head ends of the coil of the three-phase motor are respectively placed on the conductive contact plate 2, and the three-phase motor can be as close to the inner arc edge 11 as possible, which is convenient for positioning the head end of the coil.

[0022] The total height of the insulating base 1 and the conductive contact plate 2 is adapted to the extension height of the head end of the coil of the motor, so that the coil of the motor can be positioned correspondingly on the conductive contact plate 2 .

[0023] The conductive contact plate 2 is arranged correspondingly against the top of the insulating base 1, and the conductive contact plate 2 and the insulating base 1 are detachably connected and fixed. Specifically, the conductive contact plate 2 and the insulating base 1 are positioned by bolt connection, and other connection methods can also be used to ensure that the conductive contact plate 2 and the insulating base 1 are stably connected.

[0024] The conductive contact plate 2 has an inner arc end 22 corresponding to the inner arc edge 11, the inner arc end 22 is provided on one side of the conductive contact plate 2, and the outer arc end 23 is provided on the other end of the conductive contact plate 2, the inner arc end 22 is provided flush with the inner arc edge 11, and the outer arc end 23 is provided flush with the outer arc edge 12. Then, the conductive contact plate 2 can be adaptively connected with the insulating base 1, so that the conductive contact plate 2 can effectively contact the head end of the coil.

[0025] Each independent area 21 of the conductive contact plate 2 is respectively provided with a connecting block 24, and the connecting block 24 is connected to the electrical tester through a wire. The insulating pressure plate 4 is arranged to avoid a number of connecting blocks 24. When the insulating pressure plate 4 is pressed with the conductive contact plate 2, the pressing effect on the connecting block 24 is avoided. The insulating pressure plate 4 and the conductive contact plate 2 are clamped to position the head end of the coil, thereby improving the positioning efficiency of the head end of the coil and avoiding the inconvenience caused by the traditional use of multiple manual clamps to clamp the head ends of the coil separately.

[0026] In this embodiment, the electrical tester is an existing resistance detection device, which can electrically test the mutual resistance between adjacent independent areas 21, and then determine whether the three-phase resistance of the motor coil is balanced, simplify the connection and wiring method, and can be directly connected to the electrical tester through the conductive contact plate 2, avoiding clamping and limiting the head end of the coil one by one.

[0027] The insulating platen 4 is connected to a driving member, which may be a hydraulic driving member, a pneumatic driving member or an electric driving member. In this embodiment, the driving member is a cylinder. The side of the insulating platen 4 is arranged on the side of the stand 41. The stand 41 is provided with a slide rail. The insulating platen 4 is slidably connected with the slide rail, and the slide rail is arranged in a vertical direction. The driving member drives the insulating platen 4 to realize the lifting action.

[0028] When this embodiment is applied, the three head ends of the coil of the three-phase motor are respectively placed on the conductive contact plate 2, and the insulating pressure plate 4 is driven down to press the conductive contact plate 2, so that the head end of the coil is clamped between the insulating pressure plate 4 and the conductive contact plate 2, and the electrical tester detects the mutual resistance between the three head ends.

[0029] In the above embodiment, a conductive contact plate 2 is provided in cooperation with an insulating pressure plate 4 to synchronously crimp and position the three head ends of the coil of the three-phase motor, thereby improving the positioning efficiency and positioning stability of the head end of the coil; the conductive contact plate 2 is divided into a number of independent areas 21, thereby facilitating the connection of each independent area 21 to an electrical tester, and the electrical tester detects the resistance between each independent area 21, accurately determines the resistance between each head end of the coil, and ensures the accuracy of the detection data.

[0030] In the description of this specification, the term "specific embodiment" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be based on the scope defined in the attached claims.

Claims

1. A three-phase motor winding quick detection device, characterized in that: It includes an insulating base, a conductive contact plate arranged on the insulating base, an insulating spacer arranged on the conductive contact plate for dividing it into a plurality of independent areas, and an insulating pressing plate arranged above the insulating base and corresponding to the lifting and pressing of the conductive contact plate; each independent area in the conductive contact plate is electrically connected to an electrical detector.

2. The three-phase motor winding package rapid detection device according to claim 1 is characterized in that: The insulating base has an inner arc edge adapted to the outer contour of the motor. The inner arc edge is arranged on one side of the insulating base, and the outer arc edge is arranged on the other side of the insulating base. The inner arc edge and the outer arc edge are arranged concentrically.

3. The three-phase motor winding package rapid detection device according to claim 1 is characterized in that: The total height of the insulating base and the conductive contact plate is adapted to the extension height of the head end of the coil of the motor.

4. The three-phase motor winding package rapid detection device according to claim 1 is characterized in that: The conductive contact plate is detachably connected and fixed to the insulating base.

5. The three-phase motor winding package rapid detection device according to claim 2 is characterized in that: The conductive contact plate has an inner arc end corresponding to the inner arc edge. The conductive contact plate is provided with an inner arc end on one side and an outer arc end on the other end. The inner arc end is arranged flush with the inner arc edge, and the outer arc end is arranged flush with the outer arc edge.

6. The three-phase motor winding package rapid detection device according to claim 1 is characterized in that: Each independent area of ​​the conductive contact plate is respectively provided with a connection block, and the connection block is connected to the electrical property detector through a wire, and the insulating pressure plate is arranged to avoid a plurality of connection blocks.

7. The three-phase motor winding package rapid detection device according to claim 1 is characterized in that: The insulating pressing plate is connected to a driving member, the side of the insulating pressing plate is arranged on the side of the stand, the stand is provided with a slide rail, and the insulating pressing plate is connected to the slide rail in a sliding manner.

Images