Speed measuring device of high-speed variable-frequency speed regulation asynchronous motor

Abstract

The utility model relates to the technical field of motor speed measurement, and discloses a speed measurement device of a high-speed variable-frequency speed regulation asynchronous motor, one end of a fixed column is fixedly connected with a clamping plate, the outer side of the fixed column is movably sleeved with a tension spring, and the top of a mounting plate is provided with a speed measurement instrument body between the two clamping plates; according to the utility model, the tachymeter body is placed above the mounting plate, and the fixing column is reset under the action of the tension spring force, so that the clamping plate abuts against the outer side of the tachymeter body, the position of the tachymeter body is fixed, the stability of the tachymeter body is improved, the tachymeter body does not need to be held by a hand, and the fatigue of personnel is reduced; the height of the speed measuring instrument body is adjusted according to the position of the reflective paper on the fixed disc, the rotating disc is rotated, the rotating disc drives the threaded rod to rotate, and the threaded rod drives the mounting plate to move, so that the height of the speed measuring instrument body is adjusted, and speed measurement of the motor body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of motor speed measurement, in particular to a speed measurement device for a high-speed variable-frequency speed-regulation asynchronous motor. Background Technique

[0002] An asynchronous motor, also known as an "induction motor", has its rotor placed in a rotating magnetic field. Under the action of the rotating magnetic field, it obtains a driving torque, so the rotor rotates. Through the relative motion between the rotating magnetic field generated by the stator and the rotor winding, the rotor winding cuts the magnetic induction line to generate an induced electromotive force, thereby generating an induced current in the rotor winding. The induced current in the rotor winding acts with the magnetic field to generate an electromagnetic torque, causing the rotor to rotate. Since when the rotor speed gradually approaches the synchronous speed, the induced current gradually decreases, and the generated electromagnetic torque also decreases accordingly. When the asynchronous motor operates in the motor state, the rotor speed is less than the synchronous speed.

[0003] When measuring the speed of a motor with a speedometer, it is usually measured by hand. Although it is convenient to hold, it will also lead to poor stability during the measurement of the speedometer. At the same time, during long-term use, it is easy to cause fatigue of personnel. For this reason, a speed measurement device for a high-speed variable-frequency speed-regulation asynchronous motor is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a speed measurement device for a high-speed variable-frequency speed-regulation asynchronous motor, so as to solve the problem that when measuring the speed of a motor with a speedometer, it is usually measured by hand. Although it is convenient to hold, it will also lead to poor stability during the measurement of the speedometer. At the same time, during long-term use, it is easy to cause fatigue of personnel as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A speed measurement device for a high-speed variable-frequency speed-regulation asynchronous motor, including a support plate, an installation component is arranged on the support plate, and a motor body is installed at one end of the support plate;

[0006] The installation component includes a guide post, a threaded rod and an installation plate. The guide post is fixedly connected to the top of the support plate. The threaded rod is movably connected to the top of the support plate. The installation plate is movably sleeved outside the guide post and the threaded rod. Two fixing plates are fixedly connected to the top of the installation plate. Fixing columns movably penetrate through opposite sides of the two fixing plates. One end of the fixing column is fixedly connected with a clamping plate. A tension spring is movably sleeved outside the fixing column. A speedometer body is arranged between the two clamping plates at the top of the installation plate.

[0007] As a further preference of this technical solution: a fixed disk is fixedly connected to the output shaft of the motor body, and a reflective paper is arranged on one side of the fixed disk.

[0008] As a further preference of this technical solution: a connecting plate is fixedly connected to the top of the guiding column, the top end of the threaded rod is rotatably connected to the bottom of the connecting plate, the top end of the threaded rod movably penetrates through the top of the connecting plate, and a turntable is fixedly connected to the top end of the threaded rod.

[0009] As a further preference of this technical solution: one end of the tension spring is fixedly connected to one side of the fixed plate, and the other end of the tension spring is fixedly connected to the outside of the fixed column.

[0010] As a further preference of this technical solution: the mounting plate is slidably connected to the outside of the guiding column, and the mounting plate is threadedly connected to the outside of the threaded rod.

[0011] As a further preference of this technical solution: a through groove is formed in the top of the mounting plate, and a scale plate is fixedly connected to the outside of the guiding column, and the scale plate is located inside the through groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: by placing the speedometer body above the mounting plate, the fixed column is reset under the action of the tension spring force, so that the clamping plate abuts against the outside of the speedometer body, fixing the position of the speedometer body, improving the stability of the speedometer body, eliminating the need for manual holding, and reducing the fatigue of personnel; according to the position of the reflective paper on the fixed disk, the height of the speedometer body is adjusted. By rotating the turntable, the turntable drives the threaded rod to rotate, and the threaded rod drives the mounting plate to move, thereby adjusting the height of the speedometer body, which is convenient for measuring the speed of the motor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of the present utility model;

[0015] Figure 2 It is a schematic top view structural diagram of the present utility model;

[0016] Figure 3 It is a schematic right view structural diagram of the present utility model.

[0017] Description of the reference numerals: 1. Motor body; 2. Fixed plate; 3. Reflective paper; 4. Support plate; 5. Guide post; 6. Threaded rod; 7. Mounting plate; 8. Fixed plate; 9. Fixed column; 10. Tension spring; 11. Clamping plate; 12. Tachometer body; 13. Connecting plate; 14. Turntable; 15. Through groove; 16. Scale plate. Detailed implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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, rather than all 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.

[0019] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions that can be implemented in this application. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope that can be covered by the technical content disclosed in this application without affecting the effects that this application can produce and the purposes that can be achieved.

[0020] Embodiment

[0021] In the prior art, when measuring the speed of a motor with a tachometer, the motor is usually measured by hand-held method. Although it is convenient to hold by hand, it will also cause poor stability during the measurement of the tachometer, and at the same time, it is easy to cause fatigue of personnel during long-term use.

[0022] Please refer to Figures 1-3 , the present invention provides a technical solution: a speed measuring device for a high-speed variable-frequency speed-regulating asynchronous motor, including a support plate 4, an installation component is arranged on the support plate 4, and a motor body 1 is installed at one end of the support plate 4.

[0023] By setting up the installation components, the position of the speedometer body 12 can be fixed, improving the stability of the speedometer body 12, eliminating the need for manual holding, and reducing the fatigue of personnel; the installation components include a guide post 5, a threaded rod 6, and a mounting plate 7. The guide post 5 is fixedly connected to the top of the support plate 4, the threaded rod 6 is movably connected to the top of the support plate 4, the mounting plate 7 is movably sleeved outside the guide post 5 and the threaded rod 6. The top of the mounting plate 7 is fixedly connected with two fixing plates 8. The opposite sides of the two fixing plates 8 are movably penetrated by a fixing post 9. One end of the fixing post 9 is fixedly connected with a clamping plate 11. A tension spring 10 is movably sleeved outside the fixing post 9. The speedometer body 12 is arranged between the two clamping plates 11 on the top of the mounting plate 7. One end of the tension spring 10 is fixedly connected to one side of the fixing plate 8, and the other end of the tension spring 10 is fixedly connected to the outside of the fixing post 9; by pulling the fixing post 9, the fixing post 9 drives the clamping plate 11 to move on the mounting plate 7. At this time, the speedometer body 12 can be placed above the mounting plate 7. Release the fixing post 9, and the fixing post 9 resets under the action of the force of the tension spring 10, so that the clamping plate 11 abuts against the outside of the speedometer body 12 to fix the position of the speedometer body 12.

[0024] In order to measure the speed of the motor body 1, a fixing disk 2 is fixedly connected to the output shaft of the motor body 1. A reflective paper 3 is arranged on one side of the fixing disk 2. By starting the rotation of the output shaft of the motor body 1, the reflective paper 3 on the fixing disk 2 is driven to rotate by the output shaft of the motor body 1. By emitting laser light from the speedometer body 12, the speed of the motor body 1 can be measured.

[0025] To facilitate the speed measurement of the motor body 1, a connecting plate 13 is fixedly connected to the top of the guide post 5. The top end of the threaded rod 6 is rotatably connected to the bottom of the connecting plate 13. The top end of the threaded rod 6 movably penetrates through the top of the connecting plate 13. A turntable 14 is fixedly connected to the top end of the threaded rod 6; according to the position of the reflective paper 3 on the fixing disk 2, the height of the speedometer body 12 is adjusted. By rotating the turntable 14, the turntable 14 drives the threaded rod 6 to rotate, and the threaded rod 6 drives the mounting plate 7 to move, thereby adjusting the height of the speedometer body 12.

[0026] To facilitate the determination of the adjusted height of the speedometer body 12, the mounting plate 7 is slidably connected to the outside of the guide post 5. The mounting plate 7 is threadedly connected to the outside of the threaded rod 6. A through groove 15 is opened on the top of the mounting plate 7. A scale plate 16 is fixedly connected to the outside of the guide post 5. The scale plate 16 is located inside the through groove 15. By measuring the height of the reflective paper 3 and observing the position of the mounting plate 7 on the scale plate 16 during the process of adjusting the height of the speedometer body 12, it is convenient to quickly complete the adjustment of the speedometer body 12 according to the height of the reflective paper 3 on the fixing disk 2.

[0027] The model of the speedometer body 12 is: UT373.

[0028] Working principle or structural principle. When it is necessary to measure the speed of the motor body 1, by moving the support plate 4 to one end of the motor body 1 and pulling the fixing column 9, the fixing column 9 drives the clamping plate 11 to move on the mounting plate 7. At this time, the speedometer body 12 can be placed above the mounting plate 7. Release the fixing column 9, and the fixing column 9 resets under the action of the pulling spring 10, so that the clamping plate 11 abuts against the outside of the speedometer body 12 to fix the position of the speedometer body 12; at this time, the height of the speedometer body 12 can be adjusted according to the position of the reflective paper 3 on the fixed disk 2. By rotating the turntable 14, the turntable 14 drives the threaded rod 6 to rotate, and the threaded rod 6 drives the mounting plate 7 to move, so as to adjust the height of the speedometer body 12, which is convenient for measuring the speed of the motor body 1; by measuring the height of the reflective paper 3, and at the same time during the process of adjusting the height of the speedometer body 12, the position of the mounting plate 7 on the scale plate 16 can be observed, which is convenient for quickly completing the adjustment of the speedometer body 12 according to the height of the reflective paper 3 on the fixed disk 2.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A speed measuring device for a high-speed variable-frequency speed-regulating asynchronous motor, comprising a support plate (4), characterized in that: The support plate (4) is provided with a mounting assembly, and one end of the support plate (4) is mounted with a motor body (1); The mounting assembly comprises a guide column (5), a threaded rod (6) and a mounting plate (7); the guide column (5) is fixedly connected to the top of the support plate (4); the threaded rod (6) is movably connected to the top of the support plate (4); the mounting plate (7) is movably sleeved on the outer sides of the guide column (5) and the threaded rod (6); two fixing plates (8) are fixedly connected to the top of the mounting plate (7); a fixing column (9) is movably penetrated on opposite sides of the two fixing plates (8); one end of the fixing column (9) is fixedly connected to a clamping plate (11); a tension spring (10) is movably sleeved on the outer side of the fixing column (9); and a speedometer body (12) is arranged at the top of the mounting plate (7) between the two clamping plates (11).

2. The speed measuring device for a high-speed variable-frequency speed-regulating asynchronous motor according to claim 1 is characterized in that: The output shaft of the motor body (1) is fixedly connected to a fixing disk (2), and a reflective paper (3) is provided on one side of the fixing disk (2).

3. The speed measuring device of a high-speed variable-frequency speed-regulating asynchronous motor according to claim 1, characterized in that: The top of the guide column (5) is fixedly connected to a connecting plate (13), the top of the threaded rod (6) is rotatably connected to the bottom of the connecting plate (13), the top of the threaded rod (6) movably passes through the top of the connecting plate (13), and the top of the threaded rod (6) is fixedly connected to a turntable (14).

4. The speed measuring device for a high-speed variable-frequency speed-regulating asynchronous motor according to claim 1, characterized in that: One end of the tension spring (10) is fixedly connected to one side of the fixing plate (8), and the other end of the tension spring (10) is fixedly connected to the outer side of the fixing column (9).

5. The speed measuring device for a high-speed variable-frequency speed-regulating asynchronous motor according to claim 1, characterized in that: The mounting plate (7) is slidably connected to the outer side of the guide column (5), and the mounting plate (7) is connected to the outer side of the threaded rod (6) through threads.

6. The speed measuring device of a high-speed variable-frequency speed-regulating asynchronous motor according to claim 1, characterized in that: A through slot (15) is provided on the top of the mounting plate (7), and a scale plate (16) is fixedly connected to the outer side of the guide column (5), and the scale plate (16) is located inside the through slot (15).

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