CN114963942A - An improved motor stator and rotor air gap measurement tool - Google Patents

Abstract

The invention discloses an improved motor stator and rotor air gap measuring tool, which belongs to the field of motor measuring tools and comprises a handheld measuring rod, wherein the top of the handheld measuring rod is fixedly provided with an illuminating mechanism through a screw, the end part of the handheld measuring rod is fixedly connected with a taper ruler measuring mechanism, the tail part of the handheld measuring rod is provided with a ruler body, the side wall of the ruler body is provided with a scale mark, the side wall of the ruler body is connected with a vernier scale in a sliding way, the taper ruler measuring mechanism is in transmission connection with an inner measuring claw of the vernier scale through a linkage mechanism, the linkage mechanism comprises a connecting rod, a rotating wheel and a movable groove, the interior of the taper ruler measuring mechanism is provided with a movable groove, the interior of the movable groove is connected with the rotating wheel in a sliding way, the rotating wheel is in rotating connection with one end of the connecting rod through a pin rod, the other end of the connecting rod is installed with the inner measuring claw of the vernier scale through the pin rod, the measuring error can be greatly reduced, and the data measurement is more convenient.

Description

An improved motor stator and rotor air gap measurement tool

technical field

The invention relates to the technical field of motor measurement tools, in particular to an improved motor stator and rotor air gap measurement tool.

Background technique

The air gap between the stator and rotor of the high-voltage motor is an important indicator to measure the performance of the motor. The accuracy of the data measurement directly affects the quality and progress of the maintenance. At present, the method of measuring the gap between the stator and rotor of the motor mainly uses a feeler gauge or a self-made measuring rod; The measuring tool is a self-made measuring rod. The measuring rod is cut and polished with a bakelite stick, and is measured with a flashlight and a vernier caliper. This method has large errors and is inconvenient to measure. Due to the structure of the motor, the feeler gauge does not have the conditions for measuring;

Since most of the motor air gap measurement can only be measured from the air gap measurement hole of the end cover after the motor end cover is reinstalled, the hand cannot reach into the inside of the motor, and the measurement hole is small, it is inconvenient to use a feeler gauge or it is impossible to use a feeler gauge Measurement; the self-made measuring rod can be adapted to the motor structure for measurement, but the self-made measuring rod has a large randomness, there is no scale in the strict sense as a reference, and the error is large, and the measurement data affects the result analysis. The manufacturing process of the self-made measuring rod measuring head and the measurement method are greatly affected by human factors, and the measurement is also greatly affected by environmental factors.

The measurement error of the feeler gauge is small, but it is difficult to measure the air gap of the motor due to the limitation of the structural characteristics of the equipment; the self-made measuring rod has a large error, and the measurement requires the cooperation of various tools such as a flashlight and a vernier caliper, and is greatly affected by human factors.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an improved motor stator and rotor air gap measurement tool, which can greatly reduce the measurement error and facilitate data measurement, so as to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: an improved motor stator and rotor air gap measurement tool, comprising a hand-held measuring rod, the top of the hand-held measuring rod is fixed and installed with a lighting mechanism by screws, the hand-held measuring rod is The end of the measuring rod is fixedly connected with a tapered ruler measuring mechanism, the tail of the hand-held measuring rod is installed with a ruler body, the side wall of the ruler body is provided with a scale line, and the side wall of the ruler body is slidably connected with a ruler body. a vernier ruler, the tapered ruler measuring mechanism is connected with the inner measuring claw of the vernier ruler through a linkage mechanism;

The linkage mechanism includes a connecting rod, a runner and a movable groove, and a movable groove is opened inside the tapered ruler measuring mechanism, and a runner is slidably connected inside the movable groove, and the runner is connected to the connection through a pin rod. One end of the rod is rotatably connected, and the other end of the connecting rod is installed with the inner measuring claw of the vernier scale through a pin rod.

Preferably, the lighting mechanism includes a mounting bracket, a small LED light, a threaded groove, a bolt, a switch and a cavity, the mounting bracket is mounted on the top of the hand-held measuring rod by screws, and the LED is installed inside the mounting bracket For a small lamp, a cavity is opened inside the mounting bracket, and the connecting rod penetrates from one end of the cavity and passes out from the other end.

Preferably, a switch is installed at the rear of the small LED light, a small LED light battery box is arranged inside the handheld measuring rod, a button battery is installed inside the battery box for the small LED light, and the small LED light A switch is installed at the rear, and the button battery is electrically connected with the LED small light through the switch.

Preferably, a threaded groove is formed on the top surface of the mounting bracket, a bolt is threadedly connected inside the threaded groove, and the bottom end of the bolt is in conflict with the side wall of the LED small lamp.

Preferably, the tapered ruler measuring mechanism comprises a tapered ruler vernier, a tapered ruler measuring head, a slider, and a tapered ruler vernier sliding groove, and the end of the hand-held measuring rod is fixedly connected with a tapered ruler measurement head, A conical ruler vernier is slidably connected on the inclined surface of the conical ruler measuring head, and a movable groove is opened on the side wall of the conical ruler vernier.

Preferably, a sliding block is fixedly connected to the bottom side wall of the tapered vernier, a tapered vernier sliding groove is opened under the inclined surface of the tapered vernier, and the inside of the tapered vernier sliding groove is connected to the sliding groove. Block sliding connection.

Compared with the prior art, the beneficial effects of the present invention are:

The invention provides an improved motor stator and rotor air gap measuring tool. 1. The measuring head adopts a tapered ruler, and the tapered ruler has a vernier and a scale. Compared with the self-made measuring rod, the reading is clearer and more accurate, and the error is small.

2. A digital vernier caliper is installed at the end of the hand-held measuring rod, which has a linkage function with the vernier of the tapered ruler of the measuring head. During measurement, it can be read from the tapered ruler after the measurement is completed or through the digital display vernier caliper during measurement. , more intuitive and convenient.

3. A small LED lamp head powered by a button battery is installed on the hand-held measuring rod. When the switch is turned on during measurement, the internal air gap of the device under test can be clearly seen, which is convenient for accurate measurement.

4. The improved measurement tool is more convenient for the staff to operate, and the measurement data is more accurate, the measurement error is reduced, the portability is convenient, and the versatility is strong.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

2 is a schematic structural diagram of the lighting mechanism of the present invention;

3 is a schematic structural diagram of the linkage mechanism and the tapered ruler measuring mechanism of the present invention.

Labels in the figure: 1. Hand-held measuring rod; 2. Lighting mechanism; 21. Mounting frame; 22, LED light; 23, threaded groove; 24, bolt; 25, switch; 26, cavity; 3, LED light Battery box; 4. Linkage mechanism; 41. Connecting rod; 42. Wheel; 43. Active groove; 5. Conical ruler measuring mechanism; 51. Conical ruler vernier; block; 54, tapered ruler vernier sliding groove; 6, ruler body; 7, scale line; 8, vernier ruler; 9, inner measuring claw.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention provides an improved motor stator and rotor air gap measurement tool as shown in Figures 1 to 3, including a hand-held measuring rod 1, the top of the hand-held measuring rod 1 is fixedly installed with an illumination mechanism 2 by screws, and the illumination mechanism 2. It includes a mounting bracket 21, a small LED light 22, a threaded groove 23, a bolt 24, a switch 25 and a cavity 26. The mounting bracket 21 is mounted on the top of the handheld measuring rod 1 through screws. Lamp 22, a cavity 26 is opened inside the mounting frame 21, and the connecting rod 41 penetrates from one end of the cavity 26 and passes out from the other end. By opening the cavity 26 inside the mounting frame 21, the connecting rod 41 can penetrate Through the mounting bracket 21, the connecting rod 41 can be easily moved.

A switch 25 is installed at the rear of the small LED light 22 , a small LED light battery box 3 is arranged inside the handheld measuring rod 1 , a button battery is installed inside the battery box 3 of the small LED light, and a switch 25 is installed at the rear of the small LED light 22 , the button battery is electrically connected with the small LED light 22 through the switch 25, the button battery can supply power to the small LED light 22, and the small LED light 22 can be controlled and powered by the switch 25, and the top surface of the mounting frame 21 is provided with a threaded groove 23. A bolt 24 is threaded inside the threaded groove 23. The bottom end of the bolt 24 is in conflict with the side wall of the small LED light 22. The small LED light 22 is limited by the bolt 24, and the small LED light 22 can be fixed. on the mounting bracket 21 .

The end of the hand-held measuring rod 1 is fixedly connected with a tapered ruler measuring mechanism 5, the tail of the hand-held measuring rod 1 is installed with a ruler body 6, the side wall of the ruler body 6 is provided with a scale line 7, and the side wall of the ruler body 6 slides A vernier ruler 8 is connected, and the tapered ruler measuring mechanism 5 is connected by transmission with the inner measuring claw 9 of the vernier ruler 8 through the linkage mechanism 4;

The linkage mechanism 4 includes a connecting rod 41, a runner 42 and a movable groove 43. The inside of the tapered ruler measuring mechanism 5 is provided with a movable groove 43. The inner part of the movable groove 43 is slidably connected with a runner 42. The runner 42 is connected with the pin rod. One end of the connecting rod 41 is rotatably connected, and the other end of the connecting rod 41 is installed with the inner measuring claw 9 of the vernier scale 8 through a pin rod.

The tapered ruler measuring mechanism 5 includes a tapered ruler vernier 51, a tapered ruler measuring head 52, a slider 53, and a tapered ruler vernier sliding groove 54. The end of the hand-held measuring rod 1 is fixedly connected with the tapered ruler measurement head 52. The tapered ruler vernier 51 is slidably connected on the inclined surface of the tapered ruler measuring head 52, and the side wall of the tapered ruler vernier 51 is provided with a movable groove 43. During the sliding process of the tapered ruler vernier 51, while the internal pulley of the movable groove 43 can slide, it can also push the connecting rod 41 to move from the end of the hand-held measuring rod 1 to the tail, thereby enabling the vernier ruler 8 to move in the ruler. Slide on the body 6 to be able to take readings.

A sliding block 53 is fixedly connected to the bottom side wall of the tapered ruler vernier 51 , a tapered ruler sliding groove 54 is opened under the inclined surface of the tapered ruler measuring head 52 , and the inside of the tapered ruler vernier sliding groove 54 is slidably connected with the sliding block 53 , by sliding the slider 53 in the tapered vernier sliding groove 54 , the tapered vernier 51 can slide on the inclined surface of the tapered ruler measuring head 52 along the opening direction of the tapered vernier sliding groove 54 .

In specific use, the hand-held measuring rod 1 is inserted into the motor from the measuring hole reserved in the motor end cover, the switch 25 is turned on, and the LED small light 22 is powered by the button battery, so that the LED small light 22 is used as the measurement illumination, and the cone The shape ruler measuring head 52 is inserted into the air gap between the stator and the rotor. When inserted, the tapered ruler vernier 51 is placed on the stator or rotor iron core, and the tapered ruler measurement head 52 is pushed into the air gap. Under the action of the movable slot 43 The relative displacement is generated with the vernier, and at the same time, the linkage mechanism 4 moves together to drive the digital display vernier 8 at the end of the hand-held measuring rod 1 to move synchronously until it cannot continue to move into the air gap. The gap value, the distance moved by the digital vernier 8 also produces a reading; at this time, the scale where the tapered vernier 51 is located and the reading of the digital vernier caliper are both the air gap value, and the two values are equivalent, and both are the final measured value.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. An improved motor stator and rotor air gap measuring tool, comprising a hand-held measuring rod (1), characterized in that: an illumination mechanism (2) is fixedly installed on the top of the hand-held measuring rod (1) by screws, A tapered ruler measuring mechanism (5) is fixedly connected to the end of the handheld measuring rod (1), and a ruler body (6) is installed at the tail of the handheld measurement rod (1). The ruler body (6) A scale line (7) is opened on the side wall of the ruler body (6), a vernier ruler (8) is slidably connected to the side wall of the ruler body (6), and the tapered ruler measuring mechanism (5) is connected with the vernier ruler through the linkage mechanism (4). (8) The inner measuring claw (9) drive connection; The linkage mechanism (4) includes a connecting rod (41), a runner (42) and a movable groove (43), and a movable groove (43) is opened inside the tapered ruler measuring mechanism (5). A runner (42) is slidably connected inside the groove (43), the runner (42) is rotatably connected to one end of the connecting rod (41) through a pin rod, and the other end of the connecting rod (41) is connected to the connecting rod (41) through a pin rod. Install the inner measuring claw (9) of the vernier ruler (8). 2. An improved motor stator and rotor air gap measurement tool according to claim 1, characterized in that: the lighting mechanism (2) comprises a mounting frame (21), a small LED light (22), a thread groove ( 23), bolts (24), switches (25) and cavities (26), the mounting bracket (21) is mounted on the top of the hand-held measuring rod (1) by screws, and the inside of the mounting bracket (21) A small LED light (22) is installed, a cavity (26) is opened inside the mounting bracket (21), and the connecting rod (41) penetrates from one end of the cavity (26) and passes out from the other end. 3. An improved motor stator and rotor air gap measuring tool according to claim 2, characterized in that: a switch (25) is installed at the tail of the small LED light (22), and the hand-held measuring rod ( 1) An LED small light battery box (3) is arranged inside, a button battery is installed inside the LED small light battery box (3), and a switch (25) is installed at the rear of the LED small light (22). The button battery is electrically connected with the small LED light (22) through the switch (25). 4. An improved motor stator and rotor air gap measurement tool according to claim 2, characterized in that: the top surface of the mounting bracket (21) is provided with a threaded groove (23), and the threaded groove (23) ) is threadedly connected with a bolt (24), and the bottom end of the bolt (24) is in conflict with the side wall of the LED small lamp (22). 5. An improved motor stator and rotor air gap measuring tool according to claim 1, characterized in that: the tapered ruler measuring mechanism (5) comprises a tapered ruler vernier (51), a tapered ruler measuring head (52), a slider (53), a tapered ruler vernier sliding groove (54), a tapered ruler measuring head (52) is fixedly connected to the end of the hand-held measuring rod (1), and the tapered ruler measures A conical ruler vernier (51) is slidably connected on the inclined surface of the head (52), and a movable groove (43) is opened on the side wall of the conical ruler vernier (51). 6. An improved motor stator and rotor air gap measurement tool according to claim 5, characterized in that: a slider (53) is fixedly connected to the bottom side wall of the tapered ruler (51), and the A tapered ruler vernier sliding groove (54) is provided under the inclined surface of the tapered ruler measuring head (52), and the inside of the tapered ruler vernier sliding groove (54) is slidably connected with the slider (53).

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