Device for reducing rotating speed of encoder

Abstract

The utility model provides a device for reducing the rotating speed of an encoder, which comprises a base, a first fixing frame, a second fixing frame, a speed reducer, a rotating motor, a connecting piece and an encoder assembly, and is characterized in that the base is horizontally arranged, and the lower end of the first fixing frame and the lower end of the second fixing frame are fixed on the base; the speed reducer is fixed to the right side of the first fixing frame, the power output end of the speed reducer leftwards penetrates through the first fixing frame, the rotating motor is fixed to the right side of the speed reducer, the power output end of the rotating motor is in driving connection with the power input end of the speed reducer, and the right end of the connecting piece is fixed to the power output end of the speed reducer. The encoder main body is fixed on the left side of the second fixing frame, the encoder main shaft is rotatably installed in the encoder main body, and the encoder main shaft is fixed on the connecting piece. The design has the advantages that the encoder can rotate at a lower rotating speed to obtain more angle position data, so that whether the encoder is normal or not is judged in a more detailed manner, and missing of wrong position data caused by too high rotating speed is avoided.

Description

Technical Field

[0001] The utility model relates to the field of absolute rotary encoders, in particular to a device for reducing the rotation speed of an encoder. Background Art

[0002] An encoder is a device that converts angle or displacement information into electrical signals for transmission and communication. Encoders are mainly divided into absolute rotary encoders and incremental rotary encoders. Compared with incremental rotary encoders, absolute rotary encoders have the advantages of not requiring counting and having unique position data. Existing optical absolute encoders include a moving grating, an angle chip, a processing circuit, etc. The angle chip is a reflective principle, with the light source and the optical receiving part integrated on the same chip. When light shines on the moving grating, the chrome stripes of the moving grating emit light and project it onto the optical detection part. The moving grating is fixed to the encoder main shaft. When the encoder main shaft rotates, the moving grating rotates accordingly. The chip detects the changes in the stripes on the moving grating and resolves the light signal into a digital signal, thus forming angle data corresponding to the position.

[0003] Collecting the encoder angle data and generating a curve can determine whether the encoder angle value suddenly changes at certain positions. The higher the resolution of the absolute encoder, the more data corresponding to the position. In order to determine the quality of the encoder, it is necessary to rotate the encoder at a lower speed to collect more angle data. The existing motor speed is difficult to achieve a lower speed. Therefore, it is necessary to make a device for reducing the encoder speed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a device for reducing the rotation speed of an encoder to solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A device for reducing the rotational speed of an encoder comprises a base, a first fixing frame, a second fixing frame, a reducer, a rotating motor, a connecting piece and an encoder assembly. The base is arranged horizontally, the lower end of the first fixing frame and the lower end of the second fixing frame are both fixed to the base, the reducer is fixed to the right side of the first fixing frame and the power output end passes through the first fixing frame to the left, the rotating motor is fixed to the right side of the reducer, the power output end of the rotating motor is drivingly connected to the power input end of the reducer, the right end of the connecting piece is fixed to the power output end of the reducer, and the encoder assembly comprises an encoder body and an encoder spindle. The encoder body is fixed to the left side of the second fixing frame, the encoder spindle is rotatably mounted in the encoder body, and the encoder spindle is fixed to the connecting piece.

[0007] Further description of the utility model: The connecting part includes a connecting shaft and a connecting plate. The right end of the connecting shaft is fixed to the power output end of the reducer, and the left end is passed through the encoder main shaft. The left end of the connecting shaft is fixedly connected to the connecting plate, and the outer periphery of the connecting plate is fixedly connected to the encoder main shaft by screws.

[0008] Further description of the utility model: The connecting piece also includes a set screw, which is threadedly connected to the connecting shaft, and the inner end of the set screw is in conflict with the power output end of the reducer.

[0009] Further description of the utility model: It also includes a first fixing screw and a second fixing screw, and a plurality of mounting holes are provided on the base, the vertical cross-section of the mounting hole is an inverted T-shape, the head of the first fixing screw corresponds to the mounting hole, the threaded end of the first fixing screw passes through the mounting hole and is threadedly connected to the lower end of the first fixing bracket, the head of the second fixing screw corresponds to the mounting hole, the threaded end of the second fixing screw passes through the mounting hole and is threadedly connected to the lower end of the second fixing bracket.

[0010] The beneficial effects of this utility model are as follows: the rotating motor provides rotational power, the speed reducer reduces the speed of the rotating motor, and the speed reducer then drives the encoder spindle to rotate through the connecting member, thereby significantly reducing the rotation speed of the encoder spindle. The encoder body detects the position of the moving grating on the encoder spindle. The advantage of this design is that it can rotate the encoder at a lower speed, obtaining more angular position data, thereby more thoroughly determining whether the encoder is normal and avoiding the omission of erroneous position data caused by excessive speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the overall structural diagram of the utility model;

[0012] Figure 2 It is a partial cross-sectional view of the utility model;

[0013] Description of reference numerals:

[0014] 1. Base; 11. Mounting hole; 2. First fixing bracket; 3. Second fixing bracket; 4. Reducer; 5. Rotating motor; 6. Connector; 61. Connecting shaft; 62. Connecting plate; 63. Set screw; 7. Encoder assembly; 71. Encoder body; 72. Encoder spindle; 8. First fixing screw; 9. Second fixing screw. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] like Figures 1 to 2As shown, a device for reducing the speed of an encoder includes a base 1, a first fixed frame 2, a second fixed frame 3, a reducer 4, a rotating motor 5, a connecting member 6 and an encoder assembly 7. The base 1 is arranged horizontally, the lower end of the first fixed frame 2 and the lower end of the second fixed frame 3 are both fixed on the base 1, the reducer 4 is fixed on the right side of the first fixed frame 2 and the power output end passes through the first fixed frame 2 to the left, the rotating motor 5 is fixed on the right side of the reducer 4, the power output end of the rotating motor 5 is drivingly connected to the power input end of the reducer 4, the right end of the connecting member 6 is fixed to the power output end of the reducer 4, and the encoder assembly 7 includes an encoder body 71 and an encoder main shaft 72. The encoder body 71 is fixed on the left side of the second fixed frame 3, the encoder main shaft 72 is rotatably mounted in the encoder body 71, and the encoder main shaft 72 is fixed on the connecting member 6.

[0017] The rotating motor 5 provides rotational power, and the reducer 4 reduces the speed of the rotating motor 5. For example, if the ratio of the rotating motor 5 speed to the reducer 4 speed is 100:1, the reducer 4 then drives the encoder spindle 72 to rotate through the connector 6, thereby significantly reducing the rotation speed of the encoder spindle 72. The encoder body 71 detects the position of the moving grating on the encoder spindle 72. The advantage of this design is that it can rotate the encoder at a lower speed, obtaining more angular position data, thereby more thoroughly determining whether the encoder is functioning properly and avoiding the omission of erroneous position data caused by excessive rotation speed.

[0018] The connecting member 6 includes a connecting shaft 61 and a connecting plate 62. The right end of the connecting shaft 61 is fixed to the power output end of the reducer 4, and the left end is passed through the encoder main shaft 72. The left end of the connecting shaft 61 is fixedly connected to the connecting plate 62, and the outer periphery of the connecting plate 62 is fixedly connected to the encoder main shaft 72 by screws.

[0019] When installing the encoder assembly 7 on the first fixing frame 2 and the second fixing frame 3, first remove the connecting piece 6, pass the connecting shaft 61 to the right through the encoder main shaft 72, fix the connecting plate 62 and the encoder main shaft 72 with screws, then fix the encoder body 71 on the second fixing frame 3, and finally fix the connecting shaft 61 on the power output end of the reducer 4 to complete the installation of the encoder assembly 7.

[0020] The connecting member 6 further includes a set screw. The set screw 63 is threadedly connected to the connecting shaft 61 , and the inner end of the set screw 63 contacts the power output end of the reducer 4 .

[0021] When installing the connecting shaft 61, put the connecting shaft 61 on the power output end of the reducer 4, then tighten the tightening screw 63 in a clockwise direction until the tightening screw 63 contacts the power output end of the reducer 4, and the installation of the connecting shaft 61 is completed. When the connecting shaft 61 needs to be removed, loosen the tightening screw 63 in a counterclockwise direction and then the connecting shaft 61 can be removed.

[0022] In this design, it also includes a first fixing screw 8 and a second fixing screw 9. A plurality of mounting holes 11 are provided on the base 1. The vertical cross-section of the mounting hole 11 is an inverted T-shape. The head of the first fixing screw 8 corresponds to the mounting hole 11, and the threaded end of the first fixing screw 8 passes through the mounting hole 11 and is threadedly connected to the lower end of the first fixing frame 2. The head of the second fixing screw 9 corresponds to the mounting hole 11, and the threaded end of the second fixing screw 9 passes through the mounting hole 11 and is threadedly connected to the lower end of the second fixing frame 3.

[0023] By providing a plurality of groups of mounting holes 11 , the positions of the first fixing bracket 2 and the second fixing bracket 3 can be flexibly adjusted to adapt to the use of encoders with different thickness specifications.

[0024] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for reducing the rotational speed of an encoder, characterized in that: It includes a base, a first fixed frame, a second fixed frame, a reducer, a rotating motor, a connecting piece and an encoder assembly. The base is arranged horizontally, the lower end of the first fixed frame and the lower end of the second fixed frame are both fixed on the base, the reducer is fixed on the right side of the first fixed frame and the power output end passes through the first fixed frame to the left, the rotating motor is fixed on the right side of the reducer, the power output end of the rotating motor is drivingly connected to the power input end of the reducer, the right end of the connecting piece is fixed to the power output end of the reducer, and the encoder assembly includes an encoder body and an encoder spindle, the encoder body is fixed on the left side of the second fixed frame, the encoder spindle is rotatably mounted in the encoder body, and the encoder spindle is fixed on the connecting piece.

2. The device for reducing the speed of an encoder according to claim 1, characterized in that: The connecting member includes a connecting shaft and a connecting plate. The right end of the connecting shaft is fixed to the power output end of the reducer, and the left end is inserted into the encoder main shaft. The left end of the connecting shaft is fixedly connected to the connecting plate, and the outer periphery of the connecting plate is fixedly connected to the encoder main shaft by screws.

3. The device for reducing the speed of an encoder according to claim 2, characterized in that: The connecting member further comprises a set screw, which is threadedly connected to the connecting shaft, and an inner end of the set screw contacts the power output end of the reducer.

4. The device for reducing the speed of an encoder according to claim 1, wherein: It also includes a first fixing screw and a second fixing screw, and the base is provided with multiple groups of mounting holes, the vertical cross-section of the mounting hole is an inverted T-shape, the head of the first fixing screw corresponds to the mounting hole, the threaded end of the first fixing screw passes through the mounting hole and is threadedly connected to the lower end of the first fixing bracket, the head of the second fixing screw corresponds to the mounting hole, the threaded end of the second fixing screw passes through the mounting hole and is threadedly connected to the lower end of the second fixing bracket.

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