Three-phase alternating current motor rotation direction automatic detection mechanism

Abstract

The utility model relates to a three-phase alternating current motor rotation direction automatic detection mechanism, which comprises a mechanism base, a guide rail assembly, a connecting plate, a bearing seat, a turntable, an encoder coupling, a rotary encoder, an air cylinder and a progress adjusting mechanism, and is characterized in that the guide rail assembly is arranged on the mechanism base, and the bottom end of the connecting plate is in sliding connection with the guide rail assembly in the axial direction; the bearing seat is fixedly arranged on one side of the front end face of the connecting plate, the rotary disc shaft penetrates through the bearing seat, one end of the rotary disc shaft is connected with the rotary disc, the other end of the rotary disc shaft is connected with the rotary encoder through the encoder coupler, and the progress adjusting mechanism is installed on the connecting plate. The air cylinder is erected on one side of the guide rail assembly, an output shaft of the air cylinder is connected with one end of the progress adjusting mechanism, and the other end of the progress adjusting mechanism is in contact connection with the rotary disc. The rotating direction detection device is simple in structure, low in cost, convenient to maintain and particularly suitable for rotating direction detection with small motor shaft height difference.

Description

Technical Field

[0001] The utility model relates to the technical field of automated testing equipment, in particular to an automatic detection mechanism for the rotation direction of a three-phase AC motor. Background Art

[0002] When producing three-phase AC motors, it is necessary to detect the rotation direction of the motor to determine whether the motor winding is installed correctly. In an automated production line, an automatic detection device is required when rotation direction detection is needed. A Chinese utility model patent application (publication number CN216248031U) discloses an automatic detection device for motor rotation direction. The device is mainly used to solve the problem of automatic detection of rotation directions of motors with different shaft heights on the same production line. However, the device has problems such as complex structure and control and high equipment cost. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned defects and provide a three-phase AC motor rotation direction automatic detection mechanism which has a simple structure, low cost and is easy to maintain.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A three-phase AC motor rotation direction automatic detection mechanism, characterized in that it includes a mechanism base, a guide rail assembly, a connecting plate, a bearing seat, a turntable, an encoder coupling, a rotary encoder, a cylinder and a process adjustment mechanism, the guide rail assembly is installed on the mechanism base, the bottom end of the connecting plate is axially slidably connected to the guide rail assembly, the bearing seat is fixed to one side of the front end surface of the connecting plate, a turntable shaft is passed through the bearing seat, one end of the turntable shaft is connected to the turntable, and the other end is connected to the rotary encoder through the encoder coupling, the process adjustment mechanism is installed on the connecting plate, the cylinder is mounted on one side of the guide rail assembly, its output shaft is connected to one end of the process adjustment mechanism, and the other end of the process adjustment mechanism is in contact with the turntable.

[0006] As a preferred technical solution, the process adjustment mechanism includes a guide rod, a coupling, a spring, a proximity switch and a switch mounting plate. One end of the guide rod is connected to the output shaft of the cylinder through a coupling, and the other end is installed with the switch mounting plate. The proximity switch is fixed on the switch mounting plate, and its sensing head is in contact with the turntable. The spring is sleeved on the guide rod, and its movable end is connected to the proximity switch.

[0007] Furthermore, the proximity switch is mainly used for the travel control of the guide rod, and a spring is sleeved on the guide rod to effectively ensure the contact limit between the sensor head and the rear end surface of the turntable.

[0008] As a preferred technical solution, it also includes a turntable rubber pad, which is laid on the turntable contact surface.

[0009] As a preferred technical solution, the turntable is inclined relative to the axial reference plane, and its inclination is 5°-10°.

[0010] The utility model has the following beneficial effects: simple structure, low cost and easy maintenance, and is particularly suitable for detecting the rotation direction of motors with small shaft height differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of a three-phase AC motor rotation direction automatic detection mechanism of the utility model;

[0012] Figure 2 The utility model is a top view of a three-phase AC motor rotation direction automatic detection mechanism.

[0013] In the figure: 10 - mechanism base, 20 - guide rail assembly, 30 - connecting plate, 40 - bearing seat, 50 - turntable, 60 - encoder coupling, 70 - rotary encoder, 80 - cylinder, 90 - process adjustment mechanism, 91 - guide rod, 92 - coupling, 93 - spring, 94 - proximity switch, 95 - switch mounting plate, 100 - turntable shaft, 110 - turntable rubber pad. DETAILED DESCRIPTION

[0014] In order to have a further understanding and recognition of the structural features and the effects achieved by the utility model, a preferred embodiment and accompanying drawings are used for detailed description as follows:

[0015] The utility model provides a three-phase AC motor rotation direction automatic detection mechanism. Figure 1-2 As shown, the automatic detection mechanism includes a mechanism base 10, a guide rail assembly 20, a connecting plate 30, a bearing seat 40, a turntable 50, an encoder coupling 60, a rotary encoder 70, a cylinder 80 and a process adjustment mechanism 90. The guide rail assembly 30 is installed on the mechanism base 20, the bottom end of the connecting plate 30 is axially slidably connected to the guide rail assembly 30, the bearing seat 40 is fixed on one side of the front end surface of the connecting plate 30, a turntable shaft 100 is passed through the bearing seat 40, one end of the turntable shaft 100 is connected to the turntable 50, and the other end is connected to the rotary encoder 70 through the encoder coupling 60, the process adjustment mechanism 90 is installed on the connecting plate 30, the cylinder 80 is mounted on one side of the guide rail assembly 20, the output shaft thereof is connected to one end of the process adjustment mechanism 90, and the other end of the process adjustment mechanism 90 is in contact and connected with the turntable 50.

[0016] In this embodiment, the process adjustment mechanism 90 includes a guide rod 91, a coupling 92, a spring 93, a proximity switch 94 and a switch mounting plate 95. One end of the guide rod 91 is connected to the output shaft of the cylinder 80 through the coupling 92, and the other end is installed with the switch mounting plate 95. The proximity switch 94 is fixed on the switch mounting plate 95, and its sensing head is in contact with the turntable 50. The spring 93 is sleeved on the guide rod 91, and its movable end is connected to the proximity switch 94.

[0017] In this embodiment, a turntable rubber pad 110 is also included, and the turntable rubber pad 110 is laid on the contact surface of the turntable 50 .

[0018] In this embodiment, the turntable 50 is inclined relative to the axial reference plane, and the inclination is 5°-10°.

[0019] The specific working principle of this device is to connect and fix the mechanism base 10 with the device to be tested, so that the contact surface of the turntable 50 is facing the motor shaft to be tested and the center point of the turntable 50 is lower than the shaft of the motor with the minimum shaft height or higher than the shaft of the motor with the maximum shaft height. When the rotation direction needs to be tested, the system controls the cylinder 80 to move, the guide rod 91 moves forward, and the sensor head of the proximity switch 94 contacts the rear end face of the turntable 50, thereby pushing the turntable 50 forward. When the turntable rubber pad 110 on the contact surface of the turntable 50 contacts the shaft end side of the motor to be tested, the motor to be tested rotates, thereby driving the turntable 50 to rotate. During the rotation process, the turntable 50 drives the rotary encoder 70 to rotate through the encoder coupling 60. The system obtains the signal of the rotary encoder 70 and parses the rotation direction of the motor to be tested to determine whether the motor winding connection is correct.

[0020] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications to the shapes, structures, features and spirits described in the claims of the present invention should be included in the claims of the present invention.

Claims

1. A three-phase AC motor rotation direction automatic detection mechanism, characterized in that: It includes a mechanism base, a guide rail assembly, a connecting plate, a bearing seat, a turntable, an encoder coupling, a rotary encoder, a cylinder and a process adjustment mechanism. The guide rail assembly is installed on the mechanism base, the bottom end of the connecting plate is axially slidably connected to the guide rail assembly, the bearing seat is fixed to one side of the front end surface of the connecting plate, a turntable shaft is passed through the bearing seat, one end of the turntable shaft is connected to the turntable, and the other end is connected to the rotary encoder through the encoder coupling, the process adjustment mechanism is installed on the connecting plate, the cylinder is mounted on one side of the guide rail assembly, its output shaft is connected to one end of the process adjustment mechanism, and the other end of the process adjustment mechanism is in contact with the turntable.

2. The three-phase AC motor rotation direction automatic detection mechanism according to claim 1 is characterized in that: The process adjustment mechanism includes a guide rod, a coupling, a spring, a proximity switch and a switch mounting plate. One end of the guide rod is connected to the output shaft of the cylinder through a coupling, and the other end is installed with the switch mounting plate. The proximity switch is fixed on the switch mounting plate, and its sensing head is in contact with the turntable. The spring is sleeved on the guide rod, and its movable end is connected to the proximity switch.

3. The three-phase AC motor rotation direction automatic detection mechanism according to claim 1 is characterized in that: It also includes a turntable rubber pad, which is laid on the turntable contact surface.

4. The three-phase AC motor rotation direction automatic detection mechanism according to claim 1 is characterized in that: The rotating disk is inclined relative to the axial reference plane, and the inclination thereof is 5°-10°.

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