Tester for tachometer
By designing an integrated tachometer tester, the accuracy monitoring of speed test is achieved using couplings and Hall sensors, which solves the problems of low integration and unstable speed of the original equipment, and improves the accuracy of the test and the portability of the equipment.
Patent Information
- Application Number
- CN202420964876.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The original tachometer test equipment has low integration and unstable test speed value, resulting in a reduced accuracy of the speed test.
A tachometer tester including cover plate, housing, frequency adjustment panel, digital tachometer, motor, sensor and Hall sensor was designed. The motor and sensor are rotated coaxially through couplings, and Hall sensor is used. Monitor the speed and display the speed value through the digital speed gauge to ensure the accuracy and stability of the test.
It improves the accuracy of speed test and the service life of the equipment, simplifies operation, improves the management level and product quality of the module manufacturer. At the same time, the operating temperature and transportation difficulty of the equipment are reduced through designs such as heat dissipation holes and U-shaped frames.
Smart Images
Figure CN222145042U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tachometer testing, specifically a tachometer testing device. Background Art
[0002] In the helicopter's automatic control system, the tachometer receives three-phase electrical input from the tachometer sensor and feeds it into the synchronous motor of the component. The motor rotor rotates at the same speed as the input signal. A magnet assembly is mounted on the rotor; its rotation generates magnetic torque that acts on a drive disc at its front. The magnitude of this magnetic torque is proportional to the rotor's speed. A hairspring on the drive disc prevents it from rotating continuously, causing it to rotate a certain angle relative to the magnitude of the magnetic torque. This rotation simultaneously drives a connected pointer to indicate a specific speed relative to the dial.
[0003] The original testing equipment was built from discrete components, driven by a frequency converter, flexible connector, and ordinary motor. The speed was acquired by a handheld photoelectric reflective collector. This had the following drawbacks: the original testing equipment had low integration and unstable speed values, which reduced the accuracy of the speed test. Utility Model Content
[0004] The purpose of this invention is to provide a tachometer tester to solve the problem that the original test equipment has low integration and unstable test speed values, which leads to a decrease in the accuracy of speed value testing.
[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a tachometer tester, including a cover plate, the cover plate being detachably mounted on the top surface of a housing by bolts, a mounting hole being provided on the front side of the outer wall of the housing, a frequency adjustment panel being fixed inside the mounting hole, a fixing hole being provided on the front side of the outer wall of the housing, a digital display tachometer being fixed inside the fixing hole, the digital display tachometer being electrically connected to the frequency adjustment panel, a motor being detachably mounted inside the housing by clamps, the motor being electrically connected to the frequency adjustment panel, a support plate being fixed on the bottom surface of the housing, a sensor body being fixed on the left side of the outer wall of the support plate, the sensor body being electrically connected to the frequency adjustment panel, a flange being connected between the motor and the support plate, a coupling being connected between the motor and the sensor body, the coupling being disposed inside the flange, a Hall sensor being connected to the front side of the outer wall of the coupling, the Hall sensor being electrically connected to the frequency adjustment panel.
[0006] Preferably, two fixing plates are fixed to the left side of the outer wall of the support plate, and cable brackets are fixed to the left side of the outer wall of the two fixing plates respectively.
[0007] Preferably, a power indicator hole is provided on the front side of the outer wall of the housing, and a power indicator light is fixed inside the power indicator hole. The power indicator light is electrically connected to the frequency adjustment panel.
[0008] Preferably, the outer wall of the housing has a receiving hole on the front side, and a power switch is fixed inside the receiving hole. The power switch is electrically connected to the frequency adjustment panel. The outer wall of the housing has a cable interface on the front side, and the outer wall of the housing has several tachometer measuring interfaces on the rear side.
[0009] Preferably, the outer wall of the housing has several heat dissipation holes on the left and right sides, and two U-shaped frames are fixed on the front side of the outer wall of the housing.
[0010] Preferably, the outer walls of the two U-shaped frames are respectively fixed with rubber sleeves, and the outer walls of the two rubber sleeves are respectively provided with anti-slip textures.
[0011] Compared with existing technologies, a tachometer tester using the above-mentioned technical solution has the following advantages:
[0012] First, in use, it facilitates the coaxial rotation of the sensor body driven by the motor. At the same time, the use of Hall sensors facilitates the monitoring of the coupling speed, which is displayed on a digital tachometer and corresponds to the indicated speed of the tested component. This enables the accurate monitoring of the component's speed, which is beneficial for testing functions that require stable speed, such as those using tachometers. It helps improve testing accuracy, has a long lifespan, high precision, and is easy to operate. It also helps improve the management level and production capacity of module manufacturers and ensure product quality.
[0013] II. During use, the operator connects the power supply to the testing equipment and then turns on the power switch. The power indicator light should illuminate, and both the frequency adjustment panel and the digital tachometer should be on. Upon disconnecting the power switch, the power indicator light should turn off, clearly indicating to the operator whether the equipment is powered on and has begun operation. The fixed plate and cable brackets facilitate the limiting and support of the cables, preventing them from becoming tangled and allowing for effective management and organization, ensuring their orderly arrangement.
[0014] Thirdly, during use, the heat dissipation holes facilitate the dissipation of heat from the inside of the casing, effectively reducing the internal temperature of the equipment and maintaining the stable operation of electronic components. The U-shaped frame can serve as a handle, allowing workers to easily carry the casing and move the equipment, improving work efficiency and convenience. The rubber sleeve provides a soft grip, reducing hand fatigue, while the anti-slip texture increases friction, thus improving stability during handling. Attached Figure Description
[0015] Figure 1 This is a three-dimensional schematic diagram of an embodiment.
[0016] Figure 2 This is an exploded diagram of an embodiment.
[0017] Figure 3 This is an exploded view of the support plate and fixing plate in the embodiment.
[0018] Figure 4 This is an exploded view of the U-shaped frame in the embodiment.
[0019] In the diagram: 1. Cover plate; 2. Housing; 3. Mounting hole; 4. Frequency adjustment panel; 5. Fixing hole; 6. Digital tachometer; 7. Receiving hole; 8. Power switch; 9. Cable interface; 10. Tachometer metering interface; 11. Motor; 12. Support plate; 13. Sensor body; 14. Flange; 15. Coupling; 16. Hall sensor; 17. Power indicator hole; 18. Power indicator light; 19. Fixing plate; 20. Cable bracket; 21. Heat dissipation hole; 22. U-shaped bracket; 23. Rubber sleeve; 24. Anti-slip texture. DETAILED DESCRIPTION
[0020] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0021] like Figures 1-3 As shown, a tachometer tester includes a cover plate 1, which is detachably mounted on the top surface of a housing 2 by bolts. A mounting hole 3 is provided on the front side of the outer wall of the housing 2, and a frequency adjustment panel 4 is fixed inside the mounting hole 3. A fixing hole 5 is provided on the front side of the outer wall of the housing 2, and a digital tachometer 6 is fixed inside the fixing hole 5. The digital tachometer 6 is electrically connected to the frequency adjustment panel 4. A motor 11 is detachably mounted inside the housing 2 by clamps and is electrically connected to the frequency adjustment panel 4. A support plate 12 is fixed to the bottom surface of the housing 2. A sensor body 13 is fixed to the left side of the outer wall of the support plate 12 and is electrically connected to the frequency adjustment panel 4. A flange 14 connects the motor 11 and the support plate 12. A coupling 15 connects the motor 11 and the sensor body 13, and the coupling 15 is located inside the flange 14. A Hall sensor 16 is connected to the front side of the outer wall of the coupling 15 and is electrically connected to the frequency adjustment panel 4.
[0022] During use, the operator controls the rotation of the motor 11 via the frequency adjustment panel 4. A coupling 15 connects the motor 11 and the sensor body 13, enabling the motor 11 to drive the sensor body 13 to rotate coaxially. A Hall sensor 16 is used to monitor the rotational speed of the coupling 15, which is displayed on a digital tachometer 6, corresponding to the indicated speed of the tested component. This enables accurate monitoring of the component's rotational speed, facilitating testing of functions requiring stable rotational speeds, such as those using tachometers. It improves testing accuracy, offers long lifespan, high precision, and ease of operation, and enhances the management level and production capacity of module manufacturers, ensuring product quality.
[0023] like Figure 2 and Figure 3 As shown, two fixing plates 19 are fixed on the left side of the outer wall of the support plate 12, and cable brackets 20 are fixed on the left side of the outer wall of the two fixing plates 19 respectively.
[0024] In use, the fixing plate 19 and cable bracket 20 help to limit and support the cable, prevent the cable from being placed in a mess, and effectively manage and organize the cable so that it is arranged in an orderly manner.
[0025] like Figure 1 and Figure 2 As shown, a power indicator hole 17 is provided on the front side of the outer wall of the housing 2. A power indicator light 18 is fixed inside the power indicator hole 17. The power indicator light 18 is electrically connected to the frequency adjustment panel 4. A receiving hole 7 is provided on the front side of the outer wall of the housing 2. A power switch 8 is fixed inside the receiving hole 7. The power switch 8 is electrically connected to the frequency adjustment panel 4. A cable interface 9 is provided on the front side of the outer wall of the housing 2. Several tachometer measuring interfaces 10 are provided on the rear side of the outer wall of the housing 2.
[0026] During use, the operator connects the power supply to the tester and then turns on the power switch 8. The power indicator light 18 should light up. At this time, the frequency adjustment panel 4 and the digital display tachometer 6 should both be 0. When the power switch 8 is turned off, the power indicator light 18 should go out, which clearly tells the operator whether the equipment has been powered on and started working.
[0027] like Figure 1 , Figure 2 and Figure 4 As shown, several heat dissipation holes 21 are opened on the left and right sides of the outer wall of the housing 2. Two U-shaped frames 22 are fixed on the front side of the outer wall of the housing 2. Rubber sleeves 23 are fixed on the outer walls of the two U-shaped frames 22 respectively. Anti-slip textures 24 are provided on the outer walls of the two rubber sleeves 23 respectively.
[0028] During use, the heat dissipation holes 21 facilitate the dissipation of heat from inside the housing 2, effectively reducing the internal temperature of the equipment and maintaining the stable operation of electronic components. The U-shaped frame 22 can serve as a handle, allowing workers to easily carry the housing 2 and move the equipment, improving work efficiency and convenience. The rubber sleeve 23 provides a soft grip, reducing hand fatigue, while the anti-slip texture 24 increases friction, thereby improving stability during handling.
[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A tachometer tester, comprising a cover plate (1), wherein the cover plate (1) is detachably arranged on the top surface of a housing (2) by means of bolts, It is characterized in that The outer wall of the shell (2) is provided with a mounting hole (3) on the front side, a frequency adjustment panel (4) is fixed inside the mounting hole (3), the outer wall of the shell (2) is provided with a fixing hole (5) on the front side, a digital tachometer (6) is fixed inside the fixing hole (5), the digital tachometer (6) is electrically connected to the frequency adjustment panel (4), a motor (11) is detachably provided inside the shell (2) via a clamp, the motor (11) is electrically connected to the frequency adjustment panel (4), and a support plate (12) is fixed to the inner bottom surface of the shell (2) ), a sensor body (13) is fixed on the left side of the outer wall of the support plate (12), the sensor body (13) is electrically connected to the frequency adjustment panel (4), a flange (14) is connected between the motor (11) and the support plate (12), a coupling (15) is connected between the motor (11) and the sensor body (13), the coupling (15) is arranged in the flange (14), a Hall sensor (16) is connected to the front side of the outer wall of the coupling (15), and the Hall sensor (16) is electrically connected to the frequency adjustment panel (4).
2. A tachometer tester according to claim 1, Features: Two fixing plates (19) are fixed to the left side of the outer wall of the support plate (12), and cable brackets (20) are respectively fixed to the left side of the outer walls of the two fixing plates (19).
3. A tachometer tester according to claim 2, Features: A power indicator hole (17) is provided on the front side of the outer wall of the shell (2), a power indicator light (18) is fixed inside the power indicator hole (17), and the power indicator light (18) is electrically connected to the frequency adjustment panel (4).
4. A tachometer tester according to claim 1, Features: A receiving hole (7) is provided on the front side of the outer wall of the shell (2), a power switch (8) is fixed inside the receiving hole (7), and the power switch (8) is electrically connected to the frequency adjustment panel (4). A cable interface (9) is provided on the front side of the outer wall of the shell (2), and a plurality of tachometer measurement interfaces (10) are provided on the rear side of the outer wall of the shell (2).
5. A tachometer tester according to claim 1, Features: A plurality of heat dissipation holes (21) are respectively provided on the left and right sides of the outer wall of the shell (2), and two U-shaped frames (22) are fixed on the front side of the outer wall of the shell (2).
6. A tachometer tester according to claim 5, Features: The outer walls of the two U-shaped frames (22) are respectively fixed with rubber sleeves (23), and the outer walls of the two rubber sleeves (23) are respectively provided with anti-slip grooves (24).