Portable rotating speed tester based on Hall sensor

Abstract

The utility model relates to the technical field of tachometers, and discloses a portable rotating speed tester based on a Hall sensor, which comprises a protective shell, the inner wall of the protective shell is fixedly connected with the Hall sensor, the bottom surface of the protective shell is fixedly connected with a fixed block, and the inner wall of the fixed block is fixedly connected with a first bearing. The inner ring of the first bearing is fixedly connected with a rotating ring, the outer surface of the rotating ring is fixedly connected with a fixed ring, the inner wall of the fixed ring and the inner wall of the rotating ring are jointly in threaded connection with two threaded shafts, and the ends, away from each other, of the two threaded shafts are fixedly connected with rotating plates; when the rotating shaft rotates, the rotating ring can be driven to rotate in the first bearing, and the magnet fixed on the outer surface of the fixing ring also can rotate, so that the passing times of the magnet can be sensed through the Hall sensor, and the problem that when the device is used, the tester principle is relatively complex, and the testing accuracy is high is effectively solved. And a worker needs to specially learn, so that the use is inconvenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tachometers, in particular to a portable tachometer based on a Hall sensor. Background Art

[0002] A tachometer is an instrument used to measure the rotational speed of moving parts. There are various types of tachometers, among which the contact tachometer can directly measure the rotational speed of various moving parts, especially the rotational speed of shafts, disks, and drums. With the advancement of technology, the size of tachometers is getting smaller and smaller, making them more portable.

[0003] At present, although the existing speed tester can be more portable, its working principle is relatively complicated, requiring special training for users, and its service life is not high, which leads to certain restrictions on users when using the device, resulting in inconvenience in use. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a portable rotation speed tester based on a Hall sensor, which has the advantages of long service life, strong anti-interference ability and simple operation.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable rotation speed tester based on a Hall sensor, comprising a protective shell, an inner wall of the protective shell is fixedly connected to a Hall sensor, a bottom surface of the protective shell is fixedly connected to a fixed block, an inner wall of the fixed block is fixedly connected to a first bearing, an inner ring of the first bearing is fixedly connected to a rotating ring, an outer surface of the rotating ring is fixedly connected to a fixed ring, an inner wall of the fixed ring and an inner wall of the rotating ring are commonly threadedly connected to two threaded shafts, ends of the two threaded shafts away from each other are fixedly connected to a rotating plate, two rubber plates are arranged inside the rotating ring, an inner wall of each rubber plate is fixedly connected to a second bearing, an inner ring of each second bearing is fixedly connected to a rotating shaft, ends of the two rotating shafts away from each other are respectively fixedly connected to ends of the two threaded shafts close to each other, a magnet is fixedly connected to the outer surface of the fixed ring, and a single-chip computer is fixedly connected to the inner bottom wall of the protective shell.

[0008] Preferably, a partition is fixedly connected to the inner wall of the protective shell, a battery is fixedly connected to the upper surface of the partition, and an outer surface of the battery is in contact with the inner wall of the protective shell.

[0009] Preferably, two groups of card slots are provided on the upper surface of the protective shell, and two card blocks are clamped inside each group of the card slots.

[0010] Preferably, the top ends of the two groups of the card blocks are commonly fixedly connected with a top cover, and the bottom surface of the top cover is in contact with the upper surface of the protective shell.

[0011] Preferably, an LED screen is fixedly connected to the inner wall of the protective shell, and six groups of control buttons are fixedly connected to the upper surface of the protective shell.

[0012] Preferably, a fixing buckle is fixedly connected to the back side of the protective shell, a rope is arranged inside the fixing buckle, and an outer surface of the rope is in contact with an inner wall of the fixing buckle.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a portable rotation speed tester based on a Hall sensor, which has the following beneficial effects:

[0015] The portable rotation speed tester based on the Hall sensor is provided with a fixed block, a first bearing, a second bearing, a rotating plate, a fixed ring, a threaded shaft, a rotating ring and a rubber plate, which cooperate with each other. By applying a rotating force to the rotating plate, the threaded shaft can be driven to rotate. By cooperating with the threaded connection relationship between the threaded shaft, the fixed ring and the rotating ring, the rotating force can be converted into a thrust for lateral movement, so that the rotating shaft fixed at one end of the threaded shaft can be driven to rotate and move laterally, and the rotating shaft rotates inside the second bearing, so that the rotating force can be offset, leaving only the thrust for lateral movement, thereby finally pushing the two rubber plates closer to each other, so that the two rubber plates are in close contact with the rotating shaft to be measured, so that the rotating shaft will drive the rotating ring to rotate inside the first bearing when rotating, and the magnet fixed on the outer surface of the fixed ring will also rotate, so that the number of times the magnet passes can be sensed by the Hall sensor, effectively avoiding the problem that when the device is used, the staff need to conduct special learning due to the complex principle of the tester, which leads to inconvenience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the portable rotation speed tester based on the Hall sensor of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the control button of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the utility model storage battery;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the rotating ring of the utility model;

[0020] Figure 5It is a three-dimensional structural schematic diagram of the threaded shaft of the utility model.

[0021] In the figure: 1. protective shell; 2. rope; 3. top cover; 4. magnet; 5. LED screen; 6. card block; 7. control button; 8. card slot; 9. fixing buckle; 10. battery; 11. partition; 12. single chip microcomputer; 13. Hall sensor; 14. rotating ring; 15. fixing block; 16. first bearing; 17. rubber plate; 18. threaded shaft; 19. rotating plate; 20. second bearing; 21. fixing ring; 22. rotating shaft. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the utility model, the portable rotation speed tester based on the Hall sensor of the utility model is further described in detail below with reference to the accompanying drawings.

[0023] See also Figure 1-5 The utility model discloses a portable rotation speed tester based on a Hall sensor, comprising a protective shell 1, a Hall sensor 13 is fixedly connected to the inner wall of the protective shell 1, a fixing block 15 is fixedly connected to the bottom surface of the protective shell 1, a partition 11 is fixedly connected to the inner wall of the protective shell 1, a battery 10 is fixedly connected to the upper surface of the partition 11, and the outer surface of the battery 10 is in contact with the inner wall of the protective shell 1. By providing the partition 11 and the battery 10, the battery 10 can be separated from other devices by the partition 11, thereby providing a better working place for the battery 10.

[0024] The inner wall of the fixed block 15 is fixedly connected to the first bearing 16, and the inner ring of the first bearing 16 is fixedly connected to the rotating ring 14. Two groups of slots 8 are provided on the upper surface of the protective shell 1, and two blocks 6 are clamped inside each group of slots 8. By providing the slots 8 and the blocks 6, the device above the blocks 6 can be indirectly connected to the protective shell 1 by clamping the blocks 6 inside the slots 8.

[0025] The outer surface of the rotating ring 14 is fixedly connected to a fixing ring 21, and the inner wall of the fixing ring 21 and the inner wall of the rotating ring 14 are threadedly connected with two threaded shafts 18. The top ends of the two groups of blocks 6 are fixedly connected to a top cover 3, and the bottom surface of the top cover 3 is in contact with the upper surface of the protective shell 1. By providing the top cover 3, the device can be protected by the top cover 3, thereby preventing the device from being damaged when not in use.

[0026] The ends of the two threaded shafts 18 that are away from each other are fixedly connected to a rotating plate 19, two rubber plates 17 are arranged inside the rotating ring 14, and the inner wall of each rubber plate 17 is fixedly connected to a second bearing 20, the inner wall of the protective shell 1 is fixedly connected to an LED screen 5, and the upper surface of the protective shell 1 is fixedly connected to six groups of control buttons 7. By providing the LED screen 5 and the control buttons 7, the device can be controlled to operate through the control buttons 7, and the LED screen 5 can display the measurement results of the device.

[0027] The inner ring of each second bearing 20 is fixedly connected to a rotating shaft 22, and the ends of the two rotating shafts 22 that are far away from each other are respectively fixedly connected to the ends of the two threaded shafts 18 that are close to each other. The outer surface of the fixing ring 21 is fixedly connected to a magnet 4, the inner bottom wall of the protective shell 1 is fixedly connected to the single-chip computer 12, and the back of the protective shell 1 is fixedly connected to a fixing buckle 9. A rope 2 is arranged inside the fixing buckle 9, and the outer surface of the rope 2 is in contact with the inner wall of the fixing buckle 9. By providing the rope 2 and the fixing buckle 9, the device can be bound by the rope 2, so that it is easier to carry.

[0028] The working principle of the utility model is: first, the Hall sensor 13, the LED screen 5 and the single-chip microcomputer 12 are connected to the power supply respectively. When the power supply is connected, the device can be used normally. When the device needs to be used, the threaded shaft 18 can be driven to rotate by applying a rotating power to the rotating plate 19. The threaded connection relationship between the threaded shaft 18 and the fixed ring 21 and the rotating ring 14 can be used to convert the rotating power into a thrust for lateral movement, so that the rotating shaft 22 fixed at one end of the threaded shaft 18 can be pushed to rotate and move laterally, and the rotating shaft 22 rotates inside the second bearing 20, so that the rotating power can be offset, leaving only the thrust for lateral movement, thereby finally pushing the two rubber plates 17 to approach each other, so that the two rubber plates 17 and the measured The rotating shaft is in close contact, so that when the rotating shaft rotates, it will drive the rotating ring 14 to rotate inside the first bearing 16. Similarly, the magnet 4 fixed on the outer surface of the fixed ring 21 will also rotate. The Hall effect sensor, also known as the Hall sensor 13, is a transducer that converts the changing magnetic field into a change in output voltage. The Hall sensor 13 is first used to measure the magnetic field. In addition, it can also measure the physical quantities that generate and affect the magnetic field. Therefore, the number of times the magnet 4 passes by can be sensed by the Hall sensor 13, and the Hall sensor 13 transmits the induced information to the single-chip microcomputer 12, so that the rotation speed can be calculated. Therefore, it is effectively avoided that when the device is in use, the staff need to conduct special learning because the principle of the tester is relatively complicated, which leads to inconvenience in use.

[0029] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A portable rotation speed tester based on a Hall sensor, comprising a protective shell (1), characterized in that: The inner wall of the protective shell (1) is fixedly connected to a Hall sensor (13); the bottom surface of the protective shell (1) is fixedly connected to a fixed block (15); the inner wall of the fixed block (15) is fixedly connected to a first bearing (16); the inner ring of the first bearing (16) is fixedly connected to a rotating ring (14); the outer surface of the rotating ring (14) is fixedly connected to a fixed ring (21); the inner wall of the fixed ring (21) and the inner wall of the rotating ring (14) are jointly threadedly connected to two threaded shafts (18); the ends of the two threaded shafts (18) that are away from each other are The rotating ring (14) is fixedly connected to a rotating plate (19), two rubber plates (17) are arranged inside the rotating ring (14), the inner wall of each rubber plate (17) is fixedly connected to a second bearing (20), the inner ring of each second bearing (20) is fixedly connected to a rotating shaft (22), the ends of the two rotating shafts (22) that are far away from each other are respectively fixedly connected to the ends of the two threaded shafts (18) that are close to each other, the outer surface of the fixing ring (21) is fixedly connected to a magnet (4), and the inner bottom wall of the protective shell (1) is fixedly connected to a single-chip computer (12).

2. A portable rotation speed tester based on a Hall sensor according to claim 1, characterized in that: A partition (11) is fixedly connected to the inner wall of the protective shell (1), a storage battery (10) is fixedly connected to the upper surface of the partition (11), and the outer surface of the storage battery (10) is in contact with the inner wall of the protective shell (1).

3. A portable rotation speed tester based on a Hall sensor according to claim 1, characterized in that: Two groups of card slots (8) are provided on the upper surface of the protective shell (1), and two card blocks (6) are card-engaged inside each group of card slots (8).

4. A portable rotation speed tester based on a Hall sensor according to claim 3, characterized in that: The top ends of the two groups of clamping blocks (6) are commonly fixedly connected to a top cover (3), and the bottom surface of the top cover (3) is in contact with the upper surface of the protective shell (1).

5. A portable rotation speed tester based on a Hall sensor according to claim 1, characterized in that: An LED screen (5) is fixedly connected to the inner wall of the protective shell (1), and six groups of control buttons (7) are fixedly connected to the upper surface of the protective shell (1).

6. A portable rotation speed tester based on a Hall sensor according to claim 1, characterized in that: A fixing buckle (9) is fixedly connected to the back of the protective shell (1), a rope (2) is arranged inside the fixing buckle (9), and the outer surface of the rope (2) is in contact with the inner wall of the fixing buckle (9).

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