CN216904602U - Servo motor speed sensor for barrier gate machine - Google Patents
Servo motor speed sensor for barrier gate machine Download PDFInfo
- Publication number
- CN216904602U CN216904602U CN202220610601.4U CN202220610601U CN216904602U CN 216904602 U CN216904602 U CN 216904602U CN 202220610601 U CN202220610601 U CN 202220610601U CN 216904602 U CN216904602 U CN 216904602U
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- servo motor
- circular magnet
- driven shaft
- speed sensor
- hall sensor
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Abstract
The utility model discloses a servo motor speed sensor for a barrier gate machine, which is connected to an output shaft of a servo motor, and is characterized by comprising the following components: first mounting panel, driving gear, driven shaft, circular magnet and hall sensor, the driving gear cover in on servo motor's the output shaft, driven gear install with rotating in on the first mounting panel, just the driving gear with driven gear meshing is connected, the driven shaft endotheca in driven gear's inner circle, circular magnet is connected on the driven shaft, and rotate under the drive of driven shaft, hall sensor is close circular magnet sets up, and is used for detecting circular magnet's slew velocity size. The utility model relates to a servo motor rotating speed sensor capable of detecting the rotating speed of a servo motor.
Description
Technical Field
The utility model relates to the technical field of servo motors for barrier gate machines, in particular to a servo motor rotating speed sensor capable of detecting the rotating speed of a servo motor.
Background
The barrier gate machine is usually driven by a servo motor, and in order to better control the rotation speed of the servo motor, a rotation speed sensor is required to detect the rotation speed of the servo motor so as to perform feedback control on the rotation speed of the servo motor.
However, due to the limitation of the existing structure, the output shaft of the servo motor needs to be connected with a coupler, a barrier rod and other parts, and the rotating speed sensor cannot be directly installed on the output shaft. The rotating speed of the output shaft needs to be led out to a gear on the output shaft through the structure of the gear set, and then the speed of the gear is measured.
Therefore, a need exists for a servo motor speed sensor for a barrier gate that can detect the speed of the servo motor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a servo motor rotating speed sensor capable of detecting the rotating speed of a servo motor.
In order to achieve the purpose, the technical scheme provided by the utility model is as follows: the utility model provides a servo motor speed sensor for banister machine, connect on servo motor's output shaft, include: first mounting panel, driving gear, driven shaft, circular magnet and hall sensor, the driving gear cover in on servo motor's the output shaft, driven gear install with rotating in on the first mounting panel, just the driving gear with driven gear meshing is connected, the driven shaft endotheca in driven gear's inner circle, circular magnet is connected on the driven shaft, and rotate under the drive of driven shaft, hall sensor is close circular magnet sets up, and is used for detecting circular magnet's slew velocity size.
Still include the second mounting panel, hall sensor locates on the second mounting panel.
And the second mounting plate is also provided with a circuit board connected with the Hall sensor.
The round magnet is in a structure that one semicircle is a south pole and the other semicircle is a north pole.
The Hall sensor is arranged right opposite to the round magnet and can detect the speed of the alternate change of north and south poles when the round magnet rotates.
A bearing groove is formed in the first mounting plate, a bearing is arranged in the bearing groove, and the driven shaft is rotatably arranged on an inner ring of the bearing.
Still include a shell, first mounting panel, driving gear, driven shaft, circular magnet and hall sensor all locate in the shell.
Compared with the prior art, the motor rotating speed sensor comprises a first mounting plate, a driving gear, a driven shaft, a circular magnet and a Hall sensor, wherein the driving gear is sleeved on an output shaft of a servo motor, the driven gear is rotatably mounted on the first mounting plate, the driving gear is meshed with the driven gear, the driven shaft is sleeved in an inner ring of the driven gear, the circular magnet is connected to the driven shaft and rotates under the driving of the driven shaft, and the Hall sensor is arranged close to the circular magnet and used for detecting the rotating speed of the circular magnet. Therefore, by arranging the structure that the driven gear is meshed with the driving gear, the driven shaft is sleeved in the inner ring of the driven gear, the circular magnet is connected to the driven shaft and rotates under the driving of the driven shaft, the Hall sensor is arranged close to the circular magnet, the installation position of the Hall sensor is staggered with the output shaft of the four-five motor, and a space is reserved for the installation of the Hall sensor.
The utility model will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the utility model.
Drawings
Fig. 1 is a schematic diagram showing a servo motor speed sensor according to the present invention mounted on a motor.
Fig. 2 is a schematic view showing the engagement of the driving gear and the driven gear.
Fig. 3 is a schematic view showing a mounting structure of the circular magnet.
Fig. 4 shows a mounting structure of the hall sensor.
Detailed Description
Embodiments of the present invention will now be described with reference to the accompanying drawings. Because of the limitation of the existing structure, the output shaft of the servo motor needs to be connected with a coupler, a barrier gate rod and other parts, and the rotating speed sensor cannot be directly installed on the output shaft. The mounting position of the servo motor rotation speed sensor needs to be shifted from the above-mentioned member.
As described above, as shown in fig. 1 to 4, the present invention provides a servo motor rotational speed sensor 100 for a barrier gate machine, which is connected to an output shaft of a servo motor 200, and includes: first mounting panel 1, driving gear 2, driven gear 3, driven shaft 4, circular magnet 5 and hall sensor (not shown in the figure), driving gear 2 overlap in on servo motor 200's the output shaft, driven gear 3 install with rotating on first mounting panel 1, just driving gear 2 with driven gear 3 meshing is connected, 4 endotheca of driven shaft in driven gear 3's inner circle, circular magnet 5 is connected on the driven shaft 3, and rotate under the drive of driven shaft 3, hall sensor is close circular magnet 5 sets up, and is used for detecting circular magnet 5's slew velocity size.
It should be noted that the first mounting plate 1 is a metal mounting plate, the first mounting plate 1 is fixed inside a housing of the sensor, and the housing of the sensor will be described below.
The angular velocity of the driven shaft 4 and the angular velocity of the driven gear 3 are identical. The circular magnet 5 is connected to the end of the driven shaft 3, and the angular velocity of the circular magnet 5 is also identical to the angular velocity of the driven shaft 4. Therefore, the angular velocities of the driven gear 3, the driven shaft 4, and the circular magnet 5 are uniform.
In one embodiment, the angular velocity of the driven gear 3 is the same as the angular velocity of the driving gear 2. So set up, it is more convenient to be right servo motor's rotational speed detects.
In the embodiment shown in fig. 4, the sensor further comprises a second mounting plate 6, and the hall sensor is arranged on the second mounting plate 6. It should be noted that, the hall sensor is a square electronic component, the hall sensor is arranged to face the circular magnet 5, and the change of the magnetic field can be detected by the hall sensor in the rotating process of the circular magnet 5. In order to better fix the hall sensor, the second mounting plate 6 is therefore provided, which makes it possible to mount the hall sensor more easily.
In one embodiment, the second mounting plate 6 is further provided with a circuit board connected with the hall sensor. The Hall sensor is driven by a circuit board, so that the circuit board and the Hall sensor are arranged on the second mounting plate 6 together, the structure is more compact, and the space is saved.
In one embodiment, referring to fig. 3, the circular magnet 5 is a structure in which one semicircle is a south pole and the other semicircle is a north pole. In the magnet having such a configuration, the magnetic field of the circular magnet 5 is constantly and alternately changed when the magnet rotates together with the driven shaft 4, and the rotational speed of the circular magnet 5 can be detected by detecting the speed of change of the magnetic field of the circular magnet 5.
In one embodiment, referring to fig. 3, the hall sensor is disposed opposite to the circular magnet 5, and can detect the speed of the north and south poles alternating when the circular magnet 5 rotates. The hall sensor must be positioned close enough to the circular magnet 5 to be able to detect changes in the magnetic field of the circular magnet 5.
In one embodiment, the first mounting plate 1 is provided with a bearing groove 1a, a bearing (not shown) is disposed in the bearing groove 1a, and the driven shaft 4 is rotatably disposed in an inner ring of the bearing.
It should be noted that, referring to fig. 2, the bearing groove 1a is shown, and the bearing is not shown in order to better illustrate the matching structure between the bearing groove 1a, the bearing and the driven shaft 4.
The driving gear 2 is connected to an output shaft of the servo motor, and the driving gear 2 can be preferably attached to the output shaft of the servo motor.
In one implementation, the magnetic suspension type magnetic suspension device further comprises a shell 7, and the first mounting plate 1, the driving gear 2, the driven gear 3, the driven shaft 4, the circular magnet 5 and the hall sensor are all arranged in the shell 7. The housing 7 may include a base and an upper cover, and when the base is matched with the upper cover, the base should be designed to be waterproof and dustproof, so that the device can be waterproof and dustproof when used outdoors.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (7)
1. The utility model provides a servo motor speed sensor for banister machine, connects on servo motor's output shaft, its characterized in that includes: first mounting panel, driving gear, driven shaft, circular magnet and hall sensor, the driving gear cover in on servo motor's the output shaft, driven gear install with rotating in on the first mounting panel, just the driving gear with driven gear meshing is connected, the driven shaft endotheca in driven gear's inner circle, circular magnet is connected on the driven shaft, and rotate under the drive of driven shaft, hall sensor is close circular magnet sets up, and is used for detecting circular magnet's slew velocity size.
2. The servo motor speed sensor for the barrier gate of claim 1, further comprising a second mounting plate, wherein the hall sensor is disposed on the second mounting plate.
3. The servo motor speed sensor for the barrier gate according to claim 2, wherein a circuit board for connecting with the hall sensor is further provided on the second mounting plate.
4. The servo motor speed sensor for the barrier gate of claim 1, wherein the circular magnet is configured such that one semicircle is a south pole and the other semicircle is a north pole.
5. The servo motor speed sensor for the barrier gate of claim 4, wherein the Hall sensor is disposed opposite to the circular magnet and can detect the speed of the alternate north and south poles when the circular magnet rotates.
6. The servo motor speed sensor for a barrier gate machine according to claim 1, wherein a bearing groove is formed in the first mounting plate, a bearing is provided in the bearing groove, and the driven shaft is rotatably provided in an inner ring of the bearing.
7. The servo motor speed sensor for the barrier gate machine according to any one of claims 1 to 6, further comprising a housing, wherein the first mounting plate, the driving gear, the driven shaft, the circular magnet and the Hall sensor are all disposed in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220610601.4U CN216904602U (en) | 2022-03-18 | 2022-03-18 | Servo motor speed sensor for barrier gate machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220610601.4U CN216904602U (en) | 2022-03-18 | 2022-03-18 | Servo motor speed sensor for barrier gate machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216904602U true CN216904602U (en) | 2022-07-05 |
Family
ID=82191539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220610601.4U Active CN216904602U (en) | 2022-03-18 | 2022-03-18 | Servo motor speed sensor for barrier gate machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216904602U (en) |
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2022
- 2022-03-18 CN CN202220610601.4U patent/CN216904602U/en active Active
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