A device for collecting motor parameters

Abstract

The present invention provides a device for collecting motor parameters, comprising a first synchronous pulley, a second synchronous pulley, an encoder and a fixed seat, wherein the first synchronous pulley is detachably connected to the protruding end of the motor shaft, the second synchronous pulley is connected to the encoder shaft, the first synchronous pulley is connected to the second synchronous pulley through a synchronous belt, the fixed seat comprises a front support and a rear support, the front support and the rear support are arranged opposite to each other, a front bearing is provided on the front support, a rear bearing is provided on the rear support, a front end cover and a rear end cover are respectively provided on the outer sides of the front bearing and the rear bearing, the encoder is connected to the front end cover, the encoder shaft passes through the front bearing and the rear bearing, the second synchronous pulley is located between the front bearing and the rear bearing, the motor parameters are collected with the help of an external encoder, the utilization rate of the motor is improved, and there is no need to connect an encoder to each motor, the motor cost is controlled, and the encoder measurement is accurate.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to a device for collecting motor parameters. Background Art

[0002] There are two ways to control the traditional permanent magnet synchronous motor. The first is to not install an encoder, which is commonly known as an "open loop", and directly use the driver to drive the motor. The second is to install an encoder at the end of the motor shaft, which is commonly known as a "closed loop". The encoder collects the motor parameters and then drives the motor accurately through the driver. Of the above two structures, the first one does not install an encoder, and cannot accurately drive the motor, affecting the effective utilization of the motor. The second one installs an encoder at the end of the motor shaft, which improves the utilization rate of the motor, but also increases the cost of the motor. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a device for collecting motor parameters that can be repeatedly used and measure accurately.

[0004] To solve the above technical problems, the device for collecting motor parameters provided by the present invention includes a first synchronous pulley, a second synchronous pulley, an encoder and a fixed seat, the first synchronous pulley is detachably connected to the protruding end of the motor shaft, the second synchronous pulley is connected to the encoder shaft, the first synchronous pulley is connected to the second synchronous pulley through a synchronous belt, the fixed seat includes a front support and a rear support, the front support and the rear support are arranged opposite to each other, a front bearing is provided on the front support, a rear bearing is provided on the rear support, front end cover and rear end cover are respectively provided on the outer sides of the front bearing and the rear bearing, the encoder is connected to the front end cover, the encoder shaft passes through the front bearing and the rear bearing, and the second synchronous pulley is located between the front bearing and the rear bearing.

[0005] Furthermore, the first synchronous pulley is connected to the protruding end of the motor shaft via a first flat key.

[0006] Optionally, the encoder is connected to the front end cover by bolts.

[0007] Furthermore, the second synchronous pulley is connected to the encoder shaft via a second flat key.

[0008] Furthermore, the diameter of the middle portion of the encoder shaft is larger than the diameters of the two ends of the encoder shaft, and the second synchronous pulley is arranged in the middle portion of the encoder shaft.

[0009] Furthermore, a groove is provided on the second synchronous belt pulley, so that the diameter of the middle part of the second synchronous belt pulley is smaller than the diameters of the two ends of the second synchronous belt pulley.

[0010] The beneficial effects of the present invention are as follows:

[0011] 1. The present invention connects a first synchronous pulley to the protruding end of the motor shaft, and the first synchronous pulley is connected to the second synchronous pulley on the encoder shaft through a synchronous belt. With the help of an external encoder, motor parameters are collected, so that the driver can accurately drive the motor, thereby improving the utilization rate of the motor, and there is no need to connect an encoder to each motor. The second synchronous pulley can be selected according to the size of the protruding end of the motor shaft, thereby controlling the cost of the motor. A front bearing and a rear bearing are provided on the encoder shaft of the present invention, and the front bearing and the rear bearing are provided on a fixed seat and are provided with a front end cover and a rear end cover. The second synchronous pulley is provided between the front bearing and the rear bearing, which can reduce the influence on the encoder shaft and ensure that the second synchronous pulley is firmly provided on the encoder shaft, thereby making the measurement of the encoder more accurate.

[0012] 2. The first synchronous pulley and the second synchronous pulley of the present invention are respectively arranged on the motor shaft and the encoder shaft through flat keys, so that the connection between the first synchronous pulley and the motor shaft, and the connection between the second synchronous pulley and the encoder shaft is more stable, the error of the extended connection is reduced, the accuracy is improved, and the installation and disassembly are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a device for collecting motor parameters according to an embodiment.

[0014] Figure 2 Schematic diagram of the installation of the encoder of the embodiment.

[0015] Among them, 1. the first synchronous pulley; 2. the second synchronous pulley; 201. the groove; 3. the encoder; 301. the encoder shaft; 4. the motor shaft; 5. the synchronous belt; 6. the front bearing; 7. the rear bearing; 8. the front end cover; 9. the rear end cover; 10. the first flat key; 11. the second flat key; 12. the bolt. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of 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 of 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.

[0019] See also Figure 1 and Figure 2 The device for collecting motor parameters of this embodiment includes a first synchronous pulley 1, a second synchronous pulley 2, an encoder 3 and a fixed seat. The first synchronous pulley 1 is detachably connected to the protruding end of the motor shaft 4, the second synchronous pulley 2 is connected to the encoder shaft 301, the first synchronous pulley 1 is connected to the second synchronous pulley 2 through a synchronous belt 5, the fixed seat includes a front support and a rear support, the front support and the rear support are arranged opposite to each other, a front bearing 6 is provided on the front support, a rear bearing 7 is provided on the rear support, and a front end cover 8 and a rear end cover 9 are respectively provided on the outer sides of the front bearing 6 and the rear bearing 7, the encoder 3 is connected to the front end cover 8, the encoder shaft 301 passes through the front bearing 6 and the rear bearing 7, and the second synchronous pulley 2 is located between the front bearing 6 and the rear bearing 7. In this embodiment, a first synchronous pulley 1 is connected to the protruding end of the motor shaft 4, and the first synchronous pulley 1 is connected to the second synchronous pulley 2 on the encoder shaft 301 through a synchronous belt 5. The motor parameters are collected by an external encoder 3, so that the driver can accurately drive the motor and improve the utilization rate of the motor. There is no need to connect an encoder to each motor. The second synchronous pulley 2 can be selected according to the size of the protruding end of the motor shaft 4, thereby controlling the cost of the motor. A front bearing 6 and a rear bearing 7 are provided on the encoder shaft 301 of this embodiment. The front bearing 6 and the rear bearing 7 are provided on a fixed seat and are provided with a front end cover 8 and a rear end cover 9. The second synchronous pulley 2 is provided between the front bearing 6 and the rear bearing 7, which can reduce the impact on the encoder shaft 301 and ensure that the second synchronous pulley 2 is firmly provided on the encoder shaft 301, so that the measurement of the encoder 3 is more accurate.

[0020] In this embodiment, the first synchronous pulley 1 is connected to the extended end of the motor shaft 4 through the first flat key 10, and the second synchronous pulley 2 is connected to the encoder shaft 3 through the second flat key 11, so that the connection between the first synchronous pulley 1 and the motor shaft 4 and the second synchronous pulley 2 and the encoder shaft 301 is more stable, the error of the extended connection is reduced, the accuracy is improved, and the installation and disassembly are convenient. In addition, the encoder 3 is connected to the front cover 8 by bolts 12, which is convenient for replacing the encoder. The diameter of the middle part of the encoder shaft 301 of this embodiment is larger than the diameter of the two ends of the encoder shaft 301. The second synchronous pulley 2 is arranged in the middle part of the encoder shaft, which can improve the rigidity of the encoder shaft 301 and facilitate the connection of the second synchronous pulley 2. In addition, a groove 201 is provided on the second synchronous pulley 2, so that the diameter of the middle part of the second synchronous pulley 2 is smaller than the diameter of the two ends of the second synchronous pulley 2, which is convenient for positioning and stable connection of the synchronous belt 5.

[0021] In summary, in this embodiment, the first synchronous pulley 1 is connected to the protruding end of the motor shaft 4, and the first synchronous pulley 1 is connected to the second synchronous pulley 2 on the encoder shaft 301 through the synchronous belt 5. With the help of the external encoder 3, the motor parameters are collected, so that the driver can accurately drive the motor, improve the utilization rate of the motor, and there is no need to connect the encoder to each motor. The second synchronous pulley 2 can be selected according to the size of the protruding end of the motor shaft 4, thereby controlling the cost of the motor. The encoder shaft 301 of this embodiment is provided with a front bearing 6 and a rear bearing 7, and the front bearing 6 and the rear bearing 7 are arranged on a fixed seat and are provided with a front end cover 8 and a rear end cover 9. The second synchronous pulley 2 is arranged between the front bearing 6 and the rear bearing 7, which can reduce the impact on the encoder shaft 301 and ensure that the second synchronous pulley 2 is firmly arranged on the encoder shaft 301, so that the measurement of the encoder 3 is more accurate.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A device for collecting motor parameters, characterized in that: The invention comprises a first synchronous belt pulley, a second synchronous belt pulley, an encoder and a fixed seat, wherein the first synchronous belt pulley is detachably connected to the protruding end of the motor shaft, the second synchronous belt pulley is connected to the encoder shaft, the first synchronous belt pulley is connected to the second synchronous belt pulley through a synchronous belt, the fixed seat comprises a front support and a rear support, the front support and the rear support are arranged opposite to each other, a front bearing is arranged on the front support, a rear bearing is arranged on the rear support, a front end cover and a rear end cover are respectively arranged on the outer sides of the front bearing and the rear bearing, the encoder is connected to the front end cover, the encoder shaft passes through the front bearing and the rear bearing, and the second synchronous belt pulley is located between the front bearing and the rear bearing; The first synchronous pulley is connected to the protruding end of the motor shaft through a first flat key; The second synchronous pulley is connected to the encoder shaft via a second flat key; The diameter of the middle portion of the encoder shaft is larger than the diameters of the two ends of the encoder shaft, and the second synchronous pulley is arranged in the middle portion of the encoder shaft; The second synchronous belt wheel is provided with a groove, so that the diameter of the middle part of the second synchronous belt wheel is smaller than the diameter of the two ends of the second synchronous belt wheel; The encoder is connected to the front end cover by bolts.

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