Encoder speed change structure

Abstract

The utility model discloses an encoder speed change structure which comprises a bearing plate, and the top surface of the bearing plate is provided with a right-angle gear box, an encoder, a cam sheet and a proximity switch. An output shaft of the right-angle gear box is connected with the encoder, the cam piece is installed on a speed change adjusting shaft of the right-angle gear box, and the proximity switch is fixed to the bearing plate and corresponds to the cam piece in position. Preferably, the right-angle gear box is of a detachable multi-stage gear set structure. Preferably, grooves distributed at equal intervals are formed in the surface of the cam piece, and the number of the grooves corresponds to the number of the speed ratio gears in a one-to-one mode. According to the utility model, the rotating speed of the encoder can be changed by changing the variable speed ratio of the right-angle gear box, so that the purpose of adapting to different working conditions can be achieved. Non-contact speed ratio detection is achieved through cooperation of the cam piece and the proximity switch, and the error is smaller than or equal to + / -0.5%. According to the utility model, the detachable gear set is arranged to support quick replacement, so that various speed ratio requirements can be met.

Description

Technical Field

[0001] This utility model relates to the field of industrial automation control technology, and in particular to an encoder speed change structure. Background Technology

[0002] Existing encoder speed change devices mostly adopt a fixed speed ratio design, which is difficult to adapt to complex working conditions. Some adjustable structures rely on servo motors or frequency converters to achieve speed regulation, which has drawbacks such as high cost, poor anti-interference ability, large response delay and complex maintenance. In addition, traditional mechanical speed change mechanisms lack real-time feedback function, resulting in insufficient speed ratio switching accuracy and easy to cause system errors.

[0003] To address these shortcomings, we propose an encoder speed-changing structure. Utility Model Content

[0004] The purpose of this invention is to propose an encoder speed-changing structure to overcome the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an encoder speed change structure, including a support plate, wherein the top surface of the support plate is provided with a right-angle gearbox, an encoder, a cam plate and a proximity switch;

[0006] The output shaft of the right-angle gearbox is connected to the encoder, the cam plate is mounted on the speed adjustment shaft of the right-angle gearbox, and the proximity switch is fixed on the support plate and corresponds to the position of the cam plate.

[0007] Preferably, the right-angle gearbox adopts a detachable multi-stage gear set structure.

[0008] Preferably, the cam plate surface is provided with equally spaced grooves, the number of grooves corresponding one-to-one with the speed ratio gear, and the proximity switch senses the position of the grooves through the Hall effect and generates a digital signal to feed back to the external controller.

[0009] Preferably, the encoder is an incremental photoelectric encoder, whose signal output terminal is connected to the PLC controller via an RS-485 interface to realize closed-loop speed control.

[0010] Preferably, the input shaft end of the right-angle gearbox is provided with a double-lip dustproof seal ring.

[0011] Preferably, the proximity switch and the encoder communicate using the Modbus protocol.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, the speed of the encoder can be changed by altering the speed ratio of the right-angle gearbox, thus adapting to different working conditions.

[0014] 2. In this utility model, non-contact speed ratio detection is achieved by setting a cam plate and a proximity switch in cooperation, with an error ≤ ±0.5%.

[0015] 3. This utility model features a detachable gear set that supports quick replacement and adapts to various speed ratio requirements. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of the overall structure of an encoder speed-changing structure proposed in this utility model;

[0018] Figure 2 for Figure 1 Enlarged diagram of A in the middle;

[0019] Figure 3 for Figure 1 A three-dimensional view of the load-bearing plate.

[0020] Legend:

[0021] 1. Carrier plate; 2. Right-angle gearbox; 3. Encoder; 4. Cam plate; 5. Proximity switch. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, 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 an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Please refer to Figure 1-3 An encoder speed change structure includes a support plate 1, and a right-angle gearbox 2, an encoder 3, a cam plate 4 and a proximity switch 5 are provided on the top surface of the support plate 1;

[0025] The output shaft of the right-angle gearbox 2 is connected to the encoder 3, the cam plate 4 is mounted on the speed adjustment shaft of the right-angle gearbox 2, and the proximity switch 5 is fixed on the support plate 1 and corresponds to the position of the cam plate 4.

[0026] In use, the right-angle gearbox 2 is mounted on the support plate 1, the input shaft is connected to the drive motor, and the output shaft is connected to the encoder 3 through a coupling;

[0027] Rotate the speed adjustment shaft to drive the cam plate 4 to rotate to the target groove position, and the proximity switch 5 outputs the corresponding speed ratio signal;

[0028] The PLC controller adjusts the motor input speed according to the signal, while the encoder 3 provides real-time feedback on the output speed, forming a closed-loop control.

[0029] Working principle

[0030] The speed adjustment shaft drives the cam plate 4 to rotate, the proximity switch 5 detects the position of the groove and outputs a pulse signal, and the controller dynamically adjusts the power of the drive motor accordingly. The encoder 3 synchronously monitors the output speed to achieve precise matching between the speed ratio and the speed.

[0031] The encoder 3's rotational speed can be changed by altering the gear ratio of the right-angle gearbox 2, thus adapting to different working conditions.

[0032] Non-contact speed ratio detection is achieved by setting the cam plate 4 and the proximity switch 5 together, with an error of ≤±0.5%.

[0033] The detachable gear set allows for quick replacement, adapting to various speed ratio requirements.

[0034] In this implementation plan: the right-angle gearbox 2 adopts a detachable multi-stage gear set structure.

[0035] Specifically, stepless adjustment of the speed ratio is achieved by replacing gears with different numbers of teeth.

[0036] In this implementation scheme: the surface of the cam plate 4 is provided with equally spaced grooves, the number of grooves corresponds one-to-one with the speed ratio gear, and the proximity switch 5 senses the position of the grooves through the Hall effect and generates a digital signal to feed back to the external controller.

[0037] Specifically, proximity switch 5 outputs a corresponding speed ratio signal to achieve speed regulation.

[0038] In this implementation scheme: Encoder 3 is an incremental photoelectric encoder, whose signal output terminal is connected to the PLC controller through an RS-485 interface to realize closed-loop speed control.

[0039] Specifically, the encoder is controlled by a PLC.

[0040] In this implementation scheme: the input shaft end of the right-angle gearbox 2 is provided with a double-lip dustproof sealing ring.

[0041] Specifically, the double-lip dustproof seal is made of fluororubber and has a temperature resistance range of -40℃ to 200℃.

[0042] In this implementation scheme, proximity switch 5 and encoder 3 communicate using the Modbus protocol.

[0043] Specifically, it uses the Modbus protocol for communication and supports real-time uploading of speed ratio parameters to the host computer monitoring system.

[0044] In this implementation scheme: the controller is an existing structure, and the control circuit can be implemented by a person skilled in the art through simple programming. It is common knowledge in the art, and it is only used without modification. Therefore, the control method and circuit connection will not be described in detail.

[0045] Working principle: When in use, the right angle gearbox 2 is installed on the support plate 1, the input shaft is connected to the drive motor, and the output shaft is connected to the encoder 3 through a coupling;

[0046] Rotate the speed adjustment shaft to drive the cam plate 4 to rotate to the target groove position, and the proximity switch 5 outputs the corresponding speed ratio signal;

[0047] The PLC controller adjusts the motor input speed according to the signal, while the encoder 3 provides real-time feedback on the output speed, forming a closed-loop control.

[0048] The speed adjustment shaft drives the cam plate 4 to rotate, the proximity switch 5 detects the position of the groove and outputs a pulse signal, and the controller dynamically adjusts the power of the drive motor accordingly. The encoder 3 synchronously monitors the output speed to achieve precise matching between the speed ratio and the speed.

[0049] 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. An encoder variable transmission structure comprising a carrier plate (1), characterized in that, The top surface of the support plate (1) is provided with a right-angle gearbox (2), an encoder (3), a cam plate (4) and a proximity switch (5); The output shaft of the right-angle gearbox (2) is connected to the encoder (3), the cam plate (4) is mounted on the speed adjustment shaft of the right-angle gearbox (2), and the proximity switch (5) is fixed on the support plate (1) and corresponds to the position of the cam plate (4).

2. The variable speed structure of an encoder according to claim 1, wherein, The right-angle gearbox (2) adopts a detachable multi-stage gear set structure.

3. The variable speed structure of an encoder according to claim 1, wherein, The cam plate (4) has grooves that are evenly spaced on its surface. The number of grooves corresponds to the speed ratio gear. The proximity switch (5) senses the position of the grooves through the Hall effect and generates a digital signal to feed back to the external controller.

4. The variable speed structure of an encoder according to claim 1, wherein, The encoder (3) is an incremental photoelectric encoder, whose signal output end is connected to the PLC controller through the RS-485 interface to realize closed-loop speed control.

5. The variable speed structure of an encoder according to claim 1, wherein, The input shaft end of the right-angle gearbox (2) is provided with a double-lip dustproof seal ring.

6. The variable speed structure of an encoder according to claim 1, wherein, The proximity switch (5) and the encoder (3) communicate using the Modbus protocol.

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