A device and method for measuring the speed of a DC motor of a high-speed hair dryer

Abstract

The present invention relates to the field of motor detection technology, specifically, to a device for measuring the speed of a high-speed hair dryer DC motor and a measuring method thereof, including a device housing, and also including: a fixing mechanism, the fixing mechanism including a fixing plate fixed to the top surface of the bottom wall of the device housing near the open end, a mounting groove is provided in the center of the top surface of the fixing plate, the fixing plate is connected to a storage plate at the bottom surface of the mounting groove through a plurality of dampers, the top surface of the fixing plate is slidably connected to movable plates at the left and right sides of the storage plate, cavities are provided in the center of the opposite surfaces of the two movable plates, the movable plates are slidably connected to a clamping plate in the cavity, and the cavity is filled with a buffer material; a lifting mechanism, the lifting mechanism is installed in the device housing near the fixing mechanism; a control mechanism, the control mechanism is installed in the device housing, and the control mechanism is located above the fixing mechanism. After the motor to be measured is fixed, the present invention can reduce the influence of vibration and improve the accuracy of measurement.

Description

Technical Field

[0001] The invention relates to the technical field of motor detection, in particular to a device for measuring the rotation speed of a DC motor of a high-speed hair dryer and a measuring method thereof. Background Art

[0002] Compared with AC motors, DC motors can better control the speed and can be used in high-speed hair dryers. When checking whether a DC motor is faulty, it is necessary to measure the speed of the DC motor.

[0003] The utility model patent with publication number CN215067160U discloses a motor detection device including a detection device body, a detection operation platform, a motor clamping device, a rubber ring storage box, an infrared signal transmitting device, an infrared signal receiving device, a decibel sensor, and a temperature sensor, and an infrared penetration hole is arranged at the edge of the rubber sleeve.

[0004] Although the invention can measure the speed, noise and temperature of the motor at the same time, the motor will vibrate continuously when working. Only two clamping arms are used to fix the motor. During the measurement process, the vibration of the motor will cause the output shaft to shake continuously, thereby affecting the measurement of the motor speed and obtaining inaccurate results. Summary of the invention

[0005] The object of the present invention is to provide a device for measuring the rotation speed of a DC motor of a high-speed hair dryer and a method thereof, so as to solve the problem of motor vibration during measurement proposed in the above background technology.

[0006] To achieve the above-mentioned object, one of the objects of the present invention is to provide a device for measuring the speed of a high-speed hair dryer DC motor, comprising a device housing, and also comprising: a fixing mechanism for fixing the motor to be measured, the fixing mechanism comprising a fixing plate fixed to the top surface of the bottom wall of the device housing near the open end, a mounting groove is provided in the center of the top surface of the fixing plate, a storage plate is connected to the bottom surface of the mounting groove through a plurality of dampers, a movable plate is slidably connected to the top surface of the fixing plate at both left and right sides of the storage plate, a cavity is provided in the center of the opposing surfaces of the two movable plates, a clamping plate is slidably connected to the movable plate in the cavity, and a buffer material is filled in the cavity; a lifting mechanism for changing the height of a speed measuring device, the lifting mechanism is installed in the device housing near the fixing mechanism; a control mechanism for changing the position of a decibel measuring device and a temperature measuring device, the control mechanism is installed in the device housing, and the control mechanism is located above the fixing mechanism.

[0007] Preferably, the lifting mechanism includes a lifting plate for fixing the speed meter, and the lifting mechanism also includes a threaded rod and a limit rod located on both sides of the speed meter, the threaded rod is threadedly connected to the lifting plate, and the limit rod is slidably connected to the lifting plate.

[0008] Preferably, the threaded rod is rotatably connected between the top wall and the bottom wall of the device housing, the top end of the threaded rod extends to the top of the device housing and is coaxially connected to a knob, and the limit rod is fixed between the top wall and the bottom wall of the device housing.

[0009] Preferably, the control mechanism includes a mounting plate for fixing the decibel meter and the temperature meter, and the bottom surface of the top wall of the equipment housing is rotatably connected in parallel with an internal threaded sleeve and a limit cylinder, the internal thread of the internal threaded sleeve is connected to a screw rod, and a telescopic rod is slidably connected in the limit cylinder, and the bottom ends of the screw rod and the telescopic rod are both fixed to the top surface of the mounting plate.

[0010] Preferably, a control column extending to the top of the device housing is fixed to the top of the internal threaded sleeve, and a shift block for facilitating rotation is regularly fixed to the top of the outer side wall of the control column.

[0011] Preferably, sliders are fixed at both rear and front ends of the bottom surface of the movable plate, and sliding grooves corresponding to the positions of the two sliders on the same side and with matching sizes are opened on both rear and front ends of the top surface of the fixed plate. The fixed plate is rotatably connected with a bidirectional screw rod between the left and right sides of the slide groove, and the thread directions at both ends of the bidirectional screw rod are opposite. The bidirectional screw rod is threadedly connected to the two adjacent sliders at the same time.

[0012] Preferably, the two bidirectional screw rods are connected via a belt drive, and a driving motor having an output shaft coaxially connected to one of the bidirectional screw rods is fixed to the outer side wall of the fixed plate.

[0013] Preferably, one side of the device housing is open, and a movable door is hingedly connected to the open end of the device housing, and a handle is fixed to the outer side of the movable door away from the hinged end.

[0014] Preferably, an observation port is provided on the side wall of the device housing adjacent to the open end, transparent glass is embedded in the observation port, a display screen is fixed in the center of the top surface of the device housing, and the rotation speed meter, the decibel meter and the temperature meter are all electrically connected to the display screen.

[0015] The second object of the present invention is to provide a method for measuring the speed of a device for measuring the speed of a DC motor of a high-speed hair dryer, including the above-mentioned device for measuring the speed of a DC motor of a high-speed hair dryer, specifically comprising the following steps:

[0016] S1. First open the movable door, place the motor to be tested on the storage plate, drive the motor to work, and rotate the bidirectional screw coaxially connected to the output shaft of the drive motor. Then, the belt drives another bidirectional screw to rotate. The movable plates on both sides approach each other, and the two clamps clamp the motor to be tested.

[0017] S2. During measurement, the buffer material and damper in the cavity can reduce the vibration of the motor to be measured and reduce the impact on the measurement. The display screen shows the data measured by each measuring device;

[0018] S3. Observe the internal situation of the equipment casing through the observation port, rotate the knob, and the threaded rod rotates accordingly. Under the restriction of the limit rod, the lifting plate moves up and down, and the speed meter is adjusted to the output shaft position of the motor to be tested;

[0019] S4. Turn the shift block, the internal threaded sleeve rotates accordingly, the screw rod drops, and the telescopic rod slides out of the limit tube, so that the decibel meter and the temperature meter are as close as possible to the top surface of the motor to be tested.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The invention arranges a damper at the bottom of the storage plate and fills the cavity with buffer material. The motor to be tested is fixed before measurement. Two clamps can be used to fix motors of different sizes to be tested. The vibration of the motor to be tested can be reduced, the influence on the measurement can be reduced, and the accuracy of the measurement can be improved.

[0022] 2. The invention can freely control the height of the speed meter, decibel meter and temperature meter. After fixing the motors to be tested of different sizes, each meter can be adjusted to a suitable position to ensure the measurability of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the invention;

[0024] Figure 2 A cross-sectional view of the housing of the device in the invention;

[0025] Figure 3 An exploded view of the fixing mechanism in the invention;

[0026] Figure 4 It is a cross-sectional view of the movable plate and the splint in the invention;

[0027] Figure 5 It is a structural schematic diagram of the lifting mechanism in the invention;

[0028] Figure 6 It is a left view of the control mechanism in the invention.

[0029] In the figure:

[0030] 1. Equipment housing; 10. Observation port; 11. Display screen;

[0031] 2. Movable door; 20. Handle;

[0032] 3. Fixing mechanism; 30. Fixing plate; 31. Damper; 32. Storage plate; 33. Movable plate; 330. Cavity; 331. Clamp; 34. Slider; 35. Bidirectional screw rod; 36. Belt; 37. Driving motor;

[0033] 4. lifting mechanism; 40. lifting plate; 41. threaded rod; 42. limit rod; 43. knob;

[0034] 5. Speed ​​measuring device;

[0035] 6. Control mechanism; 60. Mounting plate; 61. Internal threaded sleeve; 62. Screw rod; 63. Limiting cylinder; 64. Telescopic rod; 65. Control column; 66. Dial block;

[0036] 7. Decibel meter;

[0037] 8. Temperature measuring device. Implementation

[0038] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 6 The present embodiment provides a device for measuring the speed of a high-speed hair dryer DC motor, comprising a device housing 1, and also comprising: a fixing mechanism 3 for fixing the motor to be tested, the fixing mechanism 3 comprising a fixing plate 30 fixed to the top surface of the bottom wall of the device housing 1 near the open end, a mounting groove is provided at the center of the top surface of the fixing plate 30, the fixing plate 30 is connected to a storage plate 32 at the bottom surface of the mounting groove through a plurality of dampers 31, the top surface of the fixing plate 30 is slidably connected to a movable plate 33 at both the left and right sides of the storage plate 32, a cavity 330 is provided at the center of the opposite surfaces of the two movable plates 33, a clamping plate 331 is slidably connected to the movable plate 33 in the cavity 330, and the cavity 330 is filled with a buffer material; for changing A lifting mechanism 4 for adjusting the height of the speed measuring device 5 is installed in the device housing 1 near the fixing mechanism 3; a control mechanism 6 for changing the position of the decibel measuring device 7 and the temperature measuring device 8 is installed in the device housing 1, and the control mechanism 6 is located above the fixing mechanism 3. The motor to be tested is clamped and fixed by two clamping plates 331 close to each other. Heat dissipation holes should be provided on the fixing plate 30 and the movable plate 33 to discharge the heat generated by vibration reduction. The cushioning material can be made of materials such as rubber, sponge and bubble bag. The speed measuring device 5 can use an infrared speed meter, and reflective paper is pasted on the fan blades on the output shaft of the motor to be tested. The temperature measuring device 8 can use a non-contact temperature meter such as an infrared thermometer.

[0040] In this embodiment, the lifting mechanism 4 includes a lifting plate 40 for fixing the speed meter 5. The lifting mechanism 4 also includes a threaded rod 41 and a limit rod 42 located on both sides of the speed meter 5. The threaded rod 41 is threadedly connected to the lifting plate 40, and the limit rod 42 is slidingly connected to the lifting plate 40. The speed meter 5 should be close to the fixing mechanism 3 but should not affect the normal operation of the motor to be tested.

[0041] Specifically, the threaded rod 41 is rotatably connected between the top wall and the bottom wall of the device housing 1. After the top end of the threaded rod 41 extends to the top of the device housing 1, it is coaxially connected with a knob 43. The limit rod 42 is fixed between the top wall and the bottom wall of the device housing 1, so as to facilitate the height control of the lifting plate 40 from the outside.

[0042] Specifically, the control mechanism 6 includes a mounting plate 60 for fixing the decibel meter 7 and the temperature meter 8. The bottom surface of the top wall of the equipment housing 1 is rotatably connected in parallel with an internal threaded sleeve 61 and a limit cylinder 63. The internal threaded sleeve 61 is internally threaded with a screw rod 62, and the limit cylinder 63 is slidably connected with a telescopic rod 64. The bottom ends of the screw rod 62 and the telescopic rod 64 are both fixed on the top surface of the mounting plate 60. During measurement, the decibel meter 7 and the temperature meter 8 need to be close to the top of the motor to be measured to reduce errors.

[0043] Specifically, a control column 65 extending to the top of the equipment housing 1 is fixed to the top of the internal threaded sleeve 61, and a shift block 66 for facilitating rotation is regularly fixed to the top of the outer wall of the control column 65 to facilitate the rotation of the internal threaded sleeve 61 and thereby control the height of the mounting plate 60.

[0044] Furthermore, sliders 34 are fixed at both ends of the bottom front and rear of the movable plate 33, and sliding grooves corresponding to the positions of and matching the sizes of the two sliders 34 on the same side are opened on both sides of the top front and rear of the fixed plate 30. The fixed plate 30 is rotatably connected with a bidirectional screw rod 35 between the left and right sides of the sliding groove. The threads at both ends of the bidirectional screw rod 35 are in opposite directions. The bidirectional screw rod 35 is threadedly connected to the two adjacent sliders 34 at the same time. When the bidirectional screw rod 35 rotates, the two movable plates 33 move closer to or away from each other.

[0045] In addition, the two bidirectional screw rods 35 are connected by a belt 36 , and a driving motor 37 whose output shaft is coaxially connected to one of the bidirectional screw rods 35 is fixed to the outer wall of the fixing plate 30 , so that the two bidirectional screw rods 35 rotate synchronously.

[0046] It is worth noting that one side of the device housing 1 is open, and a movable door 2 is hinged at the open end of the device housing 1. A handle 20 is fixed on the outer side of the movable door 2 away from the hinged end, which is convenient for placing the motor to be tested and keeping it sealed during measurement to reduce the impact of the external environment.

[0047] It is worth noting that an observation port 10 is provided on the side wall adjacent to the open end of the device housing 1, and transparent glass is embedded in the observation port 10 to facilitate observation of the height of each measuring instrument from the outside. A display screen 11 is fixed in the center of the top surface of the device housing 1, and the speed meter 5, decibel meter 7 and temperature meter 8 are all electrically connected to the display screen 11, so that the measurement results can be displayed.

[0048] Finally, it should be noted that the components involved in the present invention, such as the drive motor 37, the speed meter 5, the decibel meter 7 and the temperature meter 8, are all universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of the device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted controllers and power supplies, are connected through wires. The specific connection means should refer to the working principle of the present invention. The electrical connections between the electrical components are completed in a sequential working order, and the detailed connection means are all well-known technologies in the art.

[0049] This embodiment also provides a method for measuring the rotation speed of a device for measuring the rotation speed of a DC motor of a high-speed hair dryer, including the above-mentioned device for measuring the rotation speed of a DC motor of a high-speed hair dryer, and specifically includes the following steps:

[0050] S1. First open the movable door 2, place the motor to be tested on the storage plate 32, drive the motor 37 to work, and the bidirectional screw 35 coaxially connected to the output shaft of the drive motor 37 rotates, and then the other bidirectional screw 35 is driven to rotate by the belt 36, and the movable plates 33 on both sides approach each other, and the two clamping plates 331 clamp and fix the motor to be tested;

[0051] S2. During measurement, the buffer material and the damper 31 in the cavity 330 can reduce the vibration of the motor to be measured and reduce the impact on the measurement. The display screen 11 displays the data measured by each measuring device;

[0052] S3, observe the internal situation of the device housing 1 through the observation port 10, rotate the knob 43, the threaded rod 41 rotates accordingly, and under the restriction of the limit rod 42, the lifting plate 40 moves up and down to adjust the speed meter 5 to the output shaft position of the motor to be measured;

[0053] S4, rotate the shifting block 66, the internal threaded sleeve 61 rotates accordingly, the screw rod 62 descends, and the telescopic rod 64 slides out of the limiting tube 63, so that the decibel meter 7 and the temperature meter 8 are as close as possible to the top surface of the motor to be tested.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for measuring the speed of a high-speed hair dryer DC motor, comprising a device housing (1), characterized in that: Also includes: A fixing mechanism (3) for fixing the motor to be tested, the fixing mechanism (3) comprising a fixing plate (30) fixed to the top surface of the bottom wall of the device housing (1) near the open end, a mounting groove being provided at the center of the top surface of the fixing plate (30), the fixing plate (30) being connected to a storage plate (32) at the bottom surface of the mounting groove via a plurality of dampers (31), the top surface of the fixing plate (30) being slidably connected to movable plates (33) at both left and right sides of the storage plate (32), a cavity (330) being provided at the center of the opposing surfaces of the two movable plates (33), the movable plates (33) being slidably connected to a clamping plate (331) in the cavity (330), and the cavity (330) being filled with a buffer material; A lifting mechanism (4) for changing the height of the rotation speed measuring device (5), the lifting mechanism (4) being installed in the device housing (1) near the fixing mechanism (3); A control mechanism (6) for changing the position of a decibel meter (7) and a temperature meter (8), wherein the control mechanism (6) is installed in the device housing (1), and the control mechanism (6) is located above the fixing mechanism (3).

2. The device for measuring the speed of a high-speed hair dryer DC motor according to claim 1, characterized in that: The lifting mechanism (4) comprises a lifting plate (40) for fixing the rotation speed measuring device (5), and the lifting mechanism (4) further comprises a threaded rod (41) and a limit rod (42) located on both sides of the rotation speed measuring device (5), the threaded rod (41) being threadedly connected to the lifting plate (40), and the limit rod (42) being slidably connected to the lifting plate (40).

3. The device for measuring the speed of a high-speed hair dryer DC motor according to claim 2, characterized in that: The threaded rod (41) is rotatably connected between the top wall and the bottom wall of the device housing (1); the top end of the threaded rod (41) extends to the top of the device housing (1) and is coaxially connected to a knob (43); and the limiting rod (42) is fixed between the top wall and the bottom wall of the device housing (1).

4. The device for measuring the speed of a high-speed hair dryer DC motor according to claim 1, characterized in that: The control mechanism (6) comprises a mounting plate (60) for fixing the decibel meter (7) and the temperature meter (8); an internal threaded sleeve (61) and a limiting cylinder (63) are rotatably connected in parallel to the bottom surface of the top wall of the device housing (1); a screw rod (62) is internally threadedly connected to the internal thread of the internal threaded sleeve (61); a telescopic rod (64) is slidably connected to the inside of the limiting cylinder (63); and the bottom ends of the screw rod (62) and the telescopic rod (64) are both fixed to the top surface of the mounting plate (60).

5. The device for measuring the rotation speed of a high-speed hair dryer DC motor according to claim 4, characterized in that: A control column (65) extending to the top of the device housing (1) is fixed to the top of the internal threaded sleeve (61), and a shifting block (66) for facilitating rotation is regularly fixed to the top of the outer wall of the control column (65).

6. The device for measuring the speed of a high-speed hair dryer DC motor according to claim 1, characterized in that: Slide blocks (34) are fixed to the front and rear ends of the bottom of the movable plate (33); the front and rear ends of the top of the fixed plate (30) are provided with sliding grooves corresponding to the positions of the two slide blocks (34) on the same side and having sizes matching; the fixed plate (30) is rotatably connected to a bidirectional screw rod (35) between the left and right sides of the sliding groove; the threads at both ends of the bidirectional screw rod (35) are in opposite directions; and the bidirectional screw rod (35) is simultaneously threadedly connected to the two adjacent slide blocks (34).

7. The device for measuring the speed of a high-speed hair dryer DC motor according to claim 6, characterized in that: The two bidirectional screw rods (35) are connected to each other by a belt (36), and a driving motor (37) having an output shaft coaxially connected to one of the bidirectional screw rods (35) is fixed to the outer wall of the fixing plate (30).

8. The device for measuring the speed of a high-speed hair dryer DC motor according to claim 1, characterized in that: One side of the device housing (1) is open, and a movable door (2) is hingedly connected to the open end of the device housing (1), and a handle (20) is fixed to the outer side of the movable door (2) away from the hinged end.

9. The device for measuring the rotation speed of a high-speed hair dryer DC motor according to claim 1, characterized in that: An observation port (10) is provided on a side wall of the device housing (1) adjacent to the open end, wherein transparent glass is embedded in the observation port (10). A display screen (11) is fixed in the center of the top surface of the device housing (1), and the rotation speed meter (5), the decibel meter (7) and the temperature meter (8) are all electrically connected to the display screen (11).

10. A method for measuring the rotation speed of a device for a high-speed hair dryer DC motor, comprising the device for measuring the rotation speed of a high-speed hair dryer DC motor according to any one of claims 1 to 9, characterized in that: The specific steps include: S1, first open the movable door (2), place the motor to be tested on the storage plate (32), drive the motor (37) to work, rotate the bidirectional screw rod (35) coaxially connected to the output shaft of the drive motor (37), and then drive another bidirectional screw rod (35) to rotate through the belt (36), the movable plates (33) on both sides are close to each other, and the two clamping plates (331) clamp and fix the motor to be tested; S2. During measurement, the buffer material and the damper (31) in the cavity (330) can reduce the vibration of the motor to be measured and reduce the impact on the measurement, and the display screen (11) displays the data measured by each measuring device; S3. Observe the internal situation of the device housing (1) through the observation port (10), rotate the knob (43), and the threaded rod (41) rotates accordingly. Under the restriction of the limit rod (42), the lifting plate (40) moves up and down, and the speed measuring device (5) is adjusted to the position of the output shaft of the motor to be measured; S4. Rotate the shift block (66), the internal threaded sleeve (61) rotates accordingly, the screw rod (62) descends, and the telescopic rod (64) slides out of the limit tube (63), so that the decibel meter (7) and the temperature meter (8) are as close as possible to the top surface of the motor to be tested.

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