A high voltage motor rotor and stator gap measuring tool

Abstract

The utility model discloses a kind of measurement tools of high-voltage motor rotor and stator gap, it is related to motor measurement tool field, two measuring rods, two The measuring rod is cross distribution, and the middle part between two The measuring rod is hinged by shaft rod, one end of two The measuring rod is hingedly connected with connecting rod, wherein, The measuring rod includes the driving arm hingedly connected with The connecting rod, and the driven arm integrally connected with The connecting rod and the other end of The driving arm away from The connecting rod;The end of The connecting rod away from The driving arm is fixedly connected with sleeve.The utility model is combined with two measuring rods and is scissors-like structure, using the characteristics of two ends synchronous opening and closing, the cross opening of two driven arms is placed in the gap between rotor and stator, two driving arms drive connecting rod with the size of gap, subsequent only need to measure the interval of two connecting rods, the size of gap between rotor and stator can be obtained, it is convenient and fast, portable.

Description

Technical Field

[0001] The utility model relates to the field of motor measuring tools, in particular to a measuring tool for the gap between a rotor and a stator of a high-voltage motor. Background Art

[0002] The gap (air gap) between the rotor and stator of a high-voltage motor is a key parameter in motor design. Its size and uniformity directly affect the performance, efficiency and reliability of the motor. When it is necessary to measure the air gap between the generator rotor and stator, the space between the rotor and the stator is narrow, so maintenance personnel cannot directly reach in to measure with a feeler gauge, and can only conduct blind measurement by combining plug gauges. Currently, a set of portable adjustable air gap measuring tools is lacked to solve this problem. Summary of Utility Model

[0003] The purpose of the utility model is to provide a measuring tool for the gap between a rotor and a stator of a high-voltage motor to solve the problems mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A measuring tool for the gap between a rotor and a stator of a high-voltage motor, comprising two measuring rods, the two measuring rods are distributed in a crossed manner, and the middle parts of the two measuring rods are hinged through a shaft rod, one end of each of the two measuring rods is hinged with a connecting rod, wherein the measuring rod comprises a driving arm hinged with the connecting rod, and a driven arm which is far away from the connecting rod and is integrally formed and connected with the other end of the driving arm; One end of the connecting rod far away from the driving arm is fixedly connected with a sleeve, the sleeve is slidingly connected to the outer wall of an optical shaft in the length direction through a shaft sleeve, the optical shaft is respectively and fixedly connected to two symmetrical ends of a grip, and a measuring part is arranged between the two connecting rods.

[0005] As a further solution of the utility model: One end of the driven arm far away from the driving arm is a sharp end, and a round ball is integrally formed and connected on the sharp end.

[0006] As a further solution of the utility model: The length of the driving arm is the length of the driven arm plus the distance between the driven arm and the center of the round ball.

[0007] As a further solution of the utility model: When the two measuring rods are completely overlapped, the two sleeves are in contact with each other.

[0008] As a further solution of the utility model: The grip is in a C-shaped structure, and two ends of the optical shaft are fixed to two inner ends of the grip through bolts.

[0009] As a further embodiment of this utility model: one end of the measuring component is fixed to one of the connecting rods by bolts, the measuring component is perpendicular to the connecting rod, one end of the other connecting rod is provided with two limiting blocks, the measuring component is located between the two limiting blocks, and the outer surface of the measuring component is engraved with scale marks.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention uses two measuring rods combined in a scissor-like structure. By utilizing the synchronous opening and closing of both ends, the cross openings of the two driven arms are placed into the gap between the rotor and the stator. The two driving arms transmit the size of the gap to the connecting rod according to the opening and closing size. Subsequently, only the distance between the two connecting rods needs to be measured to obtain the size of the gap between the rotor and the stator. It is convenient, quick and easy to carry. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure from another perspective of the present invention; Figure 3 This is an enlarged structural diagram of region A of this utility model.

[0012] In the diagram: 1. Measuring rod; 11. Drive arm; 12. Driven arm; 2. Connecting rod; 21. Limiting block; 3. Sleeve; 4. Optical axis; 5. Handle; 6. Measuring component; 7. Ball bearing. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-3 In this embodiment of the present invention, a measuring tool for measuring the gap between the rotor and stator of a high-voltage motor includes two measuring rods 1, which are distributed in a cross pattern and are hinged together at the middle by a shaft. One end of each measuring rod 1 is hinged to a connecting rod 2. The measuring rod 1 includes a driving arm 11 that is hinged to the connecting rod 2, and a driven arm 12 that is integrally formed and connected to the other end of the driving arm 11 away from the connecting rod 2. A sleeve 3 is fixedly connected to the end of the connecting rod 2 away from the drive arm 11. The sleeve 3 is slidably connected to the outer wall of the optical axis 4 along the length direction through a bushing. The optical axis 4 is fixedly connected to the two symmetrical ends of the handle 5. A measuring element 6 is provided between the two connecting rods 2. The end of the driven arm 12 away from the drive arm 11 is a sharp end, and a ball 7 is integrally formed on the sharp end.

[0015] In this embodiment: the solution uses two measuring rods 1 combined into a scissor-like structure. By utilizing the synchronous opening and closing of both ends, the cross openings of the two driven arms 12 are placed into the gap between the rotor and the stator. The two driving arms 11 transmit the gap size to the connecting rod 2 according to the opening and closing size. Subsequently, only the distance between the two connecting rods 2 needs to be measured to obtain the size of the gap between the rotor and the stator. The operation is convenient, quick and easy, and portable.

[0016] When it is necessary to measure the gap between the rotor and stator, the operator holds the handle 5 with one hand, inserts the cross-open ends of the two driven arms 12 into the gap between the rotor and stator, and pinches the middle of one of the driven arms 12 with the other hand to keep it relatively fixed. Then, the operator pushes the handle 5 to move, so that one end of the two drive arms 11 gradually opens until the ball bearings 7 on the two driven arms 12 respectively contact the stator and rotor. Finally, the distance between the two connecting rods 2 is measured by the measuring piece 6 to read the gap value between the rotor and stator. It should be noted that the radius of the two ball bearings 7 needs to be cut off after reading the value to obtain the final gap value.

[0017] Please refer to this carefully. Figures 1-3 The length of the drive arm 11 is the length of the driven arm 12 plus the distance between the driven arm 12 and the center of the ball 7; when the two measuring rods 1 are completely overlapped, the two sleeves 3 are in contact; the handle 5 has a U-shaped structure, and the two ends of the optical axis 4 are fixed to the inner ends of the handle 5 by bolts.

[0018] In this embodiment: Since the ball 7 has a spherical structure, the distance from the outer wall of any ball that contacts the stator and rotor to the center of the ball is the same, which can effectively reduce measurement error. Secondly, it is also necessary to ensure that the length from the center of the ball 7 to the hinge center of the middle part of the measuring rod 1 is the same as the length from the hinge center of the middle part of the measuring rod 1 to the hinge center of the drive arm 11 and the connecting rod 2. This is to ensure that the opening distance at both ends of the scissor structure is the same.

[0019] Please refer to this carefully. Figures 1-3 One end of the measuring component 6 is fixed to one of the connecting rods 2 by bolts. The measuring component 6 is perpendicular to the connecting rod 2. Two limiting blocks 21 are provided on one end face of the other connecting rod 2. The measuring component 6 is located between the two limiting blocks 21. The outer surface of the measuring component 6 is engraved with scale marks.

[0020] In this embodiment: due to the structural distribution characteristics of the two connecting rods 2, there will be a gap between the two connecting rods 2. The measuring element 6 can be installed in the gap between the two connecting rods 2. The thickness of the measuring element 6 can be the same as the size of the lateral gap between the two connecting rods 2. This makes it convenient for the edge of the connecting rod 2 to rest against the outer surface of the measuring element 6 when reading the value, and also effectively avoids the occurrence of viewing angle errors that affect the actual measurement value.

[0021] It should be noted that the measurement using a ruler structure in this solution is a rough measurement. If a higher precision measurement is required, the longitudinal distance between the two connecting rods 2 can be measured using a micrometer. For example, clamp the two connecting rods 2 with a micrometer, and then subtract the width of one connecting rod 2 from the measured value.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A measuring tool for the gap between the rotor and stator of a high-voltage electric motor, characterized in that, It includes two measuring rods (1), which are arranged in a cross pattern and are hinged together at the middle by a shaft. One end of each measuring rod (1) is hinged to a connecting rod (2). Each measuring rod (1) includes a drive arm (11) hinged to the connecting rod (2) and a driven arm (12) integrally formed and connected to the other end of the drive arm (11) away from the connecting rod (2). A sleeve (3) is fixedly connected to one end of the connecting rod (2) away from the driving arm (11). The sleeve (3) is slidably connected to the outer wall of the optical axis (4) along the length direction through a bushing. The optical axis (4) is fixedly connected to the two symmetrical ends of the handle (5). A measuring element (6) is provided between the two connecting rods (2).

2. The measuring tool for the gap between the rotor and stator of a high-voltage motor according to claim 1, characterized in that, The driven arm (12) has a pointed end away from the driving arm (11), and a ball (7) is integrally formed on the pointed end.

3. The measuring tool for the gap between the rotor and stator of a high-voltage motor according to claim 2, characterized in that, The length of the driving arm (11) is the length of the driven arm (12) plus the distance between the driven arm (12) and the center of the ball (7).

4. The measuring tool for the gap between the rotor and stator of a high-voltage motor according to claim 3, characterized in that, When the two measuring rods (1) are completely overlapped, the two sleeves (3) come into contact.

5. A measuring tool for the gap between the rotor and stator of a high-voltage motor according to claim 4, characterized in that, The grip (5) has a U-shaped structure, and the two ends of the optical axis (4) are fixed to the inner ends of the grip (5) by bolts.

6. A measuring tool for the gap between the rotor and stator of a high-voltage motor according to claim 5, characterized in that, One end of the measuring component (6) is fixed to one of the connecting rods (2) by bolts. The measuring component (6) is perpendicular to the connecting rod (2). One end face of the other connecting rod (2) is provided with two limiting blocks (21). The measuring component (6) is located between the two limiting blocks (21). The outer surface of the measuring component (6) is engraved with scale marks.

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