Mounting structure of motor brake and encoder

Abstract

The utility model relates to the technical field of motors, and discloses a mounting structure of a motor brake and an encoder, which comprises a motor shaft, a motor end cover, a brake and an encoder, the brake is sleeved on the motor shaft and positioned on the outer side of the motor end cover, a brake outer cover is arranged on the brake, and a hoisting seat is arranged on the brake outer cover; the encoder is installed on the hoisting seat, located on the outer side of the brake and coaxial with the motor shaft, the shaft end of the motor shaft is provided with a connecting sleeve, a measuring rod of the encoder is provided with a connector, the connector is arranged in the connecting sleeve in a penetrating mode, the connector is provided with a transmission pin extending out in the radial direction, and the transmission pin is sleeved with an elastic piece. The connecting sleeve is provided with a notch groove corresponding to the transmission pin, and the transmission pin is clamped and matched with the notch groove to achieve linkage of the connecting sleeve and the connector. According to the mounting structure of the motor brake and the encoder, the protection of the encoder is improved while the normal functions of the brake and the encoder are ensured, the coaxiality is high, and the connection is reliable.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to an installation structure for a motor brake and encoder. Background Technology

[0002] The combination of a motor, brake, and encoder forms a closed-loop control system that provides braking and protection for the motor. This system is used to measure and control the speed, position, and angle of mechanical motion in real time, and has become a commonly used integrated unit in automated control systems. The encoder, a high-precision measuring device, converts rotary or linear motion into digital signals and is typically mounted on the motor shaft.

[0003] However, due to the frequent starting and stopping of the motor shaft, especially the intervention of the brake, the sudden start and stop action will generate an instantaneous reaction force. This force is transmitted to the encoder through the motor shaft, which makes the encoder susceptible to damage, thereby affecting its measurement accuracy and service life. Utility Model Content

[0004] The purpose of this utility model is to provide an installation structure for a motor brake and an encoder to solve the problems mentioned in the background art and to better protect the encoder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An installation structure for a motor brake and encoder includes a motor shaft, a motor end cover, a brake, and an encoder. A bearing is provided between the motor shaft and the motor end cover, and an inner bearing cover is provided on the inner surface of the motor end cover to limit one side of the bearing.

[0007] The brake is sleeved on the motor shaft and located on the outside of the motor end cover. The brake is equipped with an outer brake cover, which is installed on the outer surface of the motor end cover and limits the bearing on the other side. The outer brake cover is equipped with a lifting seat.

[0008] The encoder is mounted on a mounting base. The encoder is located outside the brake and coaxial with the motor shaft. A connecting sleeve is provided at the end of the motor shaft. A connector is provided on the measuring rod of the encoder. The connector passes through the connecting sleeve. Several radially protruding drive pins are provided on the connector. Elastic elements are sleeved on the drive pins. The connecting sleeve has notches corresponding to the drive pins. The drive pins engage with the notches to achieve linkage between the connecting sleeve and the connector.

[0009] As an alternative, the elastic element can be a rubber sleeve or several stacked O-rings.

[0010] As an alternative, the connecting sleeve is either interference-fitted or threaded to the end of the motor shaft.

[0011] As an alternative, the connector is locked to the encoder's measuring rod via a radial screw.

[0012] As an alternative, the brake cover has a first bolt that passes through the motor end cover and is threadedly connected to the bearing inner cover.

[0013] As an alternative, the lifting base and the brake cover are connected by a plug-in joint and secured with a second bolt.

[0014] As an optional solution, several annularly distributed ventilation holes are provided on the brake cover and the lifting base.

[0015] As an alternative, the encoder housing is mounted on an encoder base plate, which is fixedly connected to the mounting base.

[0016] The beneficial effects of this utility model are:

[0017] The mounting structure of this motor brake and encoder installs the brake and encoder on the ends of the motor shaft respectively, and uses a connecting sleeve and a connector to achieve reliable fixing of the brake and flexible installation of the encoder. While ensuring that the brake and encoder function normally, have high coaxiality, and reliable connection, it also improves the protection of the encoder and extends its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation structure of the motor brake and encoder provided in this embodiment of the utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0020] In the attached image:

[0021] 1. Motor shaft; 2. Motor end cover; 3. Brake; 4. Encoder; 5. Bearing; 6. Inner bearing cover; 7. Outer brake cover; 8. Lifting base; 9. Connecting sleeve; 10. Connector; 11. Transmission pin; 12. Elastic element; 13. Notch; 14. Radial screw; 15. First bolt; 16. Second bolt; 17. Ventilation hole; 18. Encoder base plate. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0027] Please see Figure 1 and Figure 2 As shown, this embodiment provides an installation structure for a motor brake and an encoder, including a motor shaft 1, a motor end cover 2, a brake 3 and an encoder 4. A bearing 5 is provided between the motor shaft 1 and the motor end cover 2. An inner bearing cover 6 is provided on the inner surface of the motor end cover 2 to limit one side of the bearing 5. The brake 3 is sleeved on the motor shaft 1 and located on the outside of the motor end cover 2. An outer brake cover 7 is provided on the brake 3. The outer brake cover 7 is installed on the outer surface of the motor end cover 2 and limits the other side of the bearing 5. A lifting seat 8 is provided on the outer brake cover 7.

[0028] The encoder 4 is mounted on the mounting base 8. The encoder 4 is located outside the brake 3 and is coaxial with the motor shaft 1. The end of the motor shaft 1 is provided with a connecting sleeve 9. The measuring rod of the encoder 4 is provided with a connector 10. The connector 10 passes through the connecting sleeve 9. The connector 10 is provided with several radially protruding transmission pins 11. The transmission pins 11 are fitted with elastic elements 12. The connecting sleeve 9 is provided with notches 13 corresponding to the transmission pins 11. The transmission pins 11 and the notches 13 engage to achieve linkage between the connecting sleeve 9 and the connector 10.

[0029] Thus, by installing the brake 3 and encoder 4 on the shaft end of the motor shaft 1 respectively, and cooperating with the connector 10 through the connecting sleeve 9, the brake 3 is reliably fixed and the encoder 4 is flexibly installed. While ensuring that the brake 3 and encoder 4 function normally, have high coaxiality, and reliable connection, the protection of the encoder 4 is improved and the service life of the encoder 4 is extended.

[0030] Optionally, the elastic element 12 is a rubber sleeve or several stacked O-rings. The elastic element 12 is used to fill the gap between the notch 13 and the transmission pin 11, and to reduce the force transmitted from the motor shaft 1 during sudden start-up and shutdown, thereby reducing damage to the encoder 4.

[0031] Optionally, the connecting sleeve 9 is interference-fitted or threaded to the end of the motor shaft 1 to ensure reliable linkage between the connecting sleeve 9 and the motor shaft 1 and accurate transmission of rotation parameters.

[0032] Optionally, the connector 10 and the measuring rod of the encoder 4 are locked together by a radial screw 14 to achieve a reliable connection between the connector 10 and the encoder 4.

[0033] Optionally, the brake outer cover 7 is provided with a first bolt 15 that passes through the motor end cover 2 and is threadedly connected to the bearing inner cover 6, so as to combine the brake outer cover 7, the motor end cover 2, and the bearing inner cover 6 into one unit; or, the brake outer cover 7 and the motor end cover 2, and the motor end cover 2 and the bearing inner cover 6 can be fixed separately.

[0034] Optionally, the lifting base 8 and the brake cover 7 are inserted into each other and fastened by the second bolt 16 to achieve a reliable connection between the lifting base 8 and the brake cover 7.

[0035] Optionally, the brake cover 7 and the mounting base 8 are provided with a number of annularly distributed ventilation holes 17 to improve the cooling effect of the motor body.

[0036] Optionally, the housing of encoder 4 is mounted on encoder base plate 18, and encoder base plate 18 is fixedly connected to the mounting base 8, reducing the installation difficulty of encoder 4.

[0037] Installation process of brake 3 and encoder 4:

[0038] 1) Fix the brake cover 7 of the brake 3 to the motor end cover 2. After the brake 3 is installed, adjust the gap.

[0039] 2) The hoisting base 8 is fixed to the brake cover 7;

[0040] 3) After heating, the connecting sleeve 9 is fitted onto the motor shaft 1;

[0041] 4) The encoder 4 is fixed to the encoder base plate 18, the encoder base plate 18 is fixed to the mounting base 8, and then the connector 10 is put on the measuring rod of the encoder 4 and fixed with the second bolt 16.

[0042] 5) The transmission pin 11 is used to make the connecting sleeve 9 and the connecting head 10 work together. When the motor runs, the motor shaft 1 drives the connecting sleeve 9, the connecting sleeve 9 drives the connecting head 10, and then drives the measuring rod of the encoder 4 to rotate, and sends out an electrical signal to realize the function of the encoder 4.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A mounting structure of a motor brake and an encoder, comprising a motor shaft (1), a motor end cover (2), a brake (3) and an encoder (4), a bearing (5) being arranged between the motor shaft (1) and the motor end cover (2), an inner side surface of the motor end cover (2) being provided with a bearing inner cover (6) limiting one side of the bearing (5), characterized in that the brake (3) is sleeved on the motor shaft (1) and located at an outer side of the motor end cover (2), the brake (3) is provided with a brake outer cover (7) mounted on an outer side surface of the motor end cover (2) and limiting the other side of the bearing (5), the brake outer cover (7) is provided with a lifting seat (8); the encoder (4) is mounted on the lifting seat (8) and located at an outer side of the brake (3) and coaxial with the motor shaft (1), a shaft end of the motor shaft (1) is provided with a connecting sleeve (9), a connecting head (10) is arranged on a measuring rod of the encoder (4), the connecting head (10) is arranged in the connecting sleeve (9), a plurality of radial transmission pins (11) are arranged on the connecting head (10), elastic members (12) are sleeved on the transmission pins (11), notch grooves (13) corresponding to the transmission pins (11) are arranged on the connecting sleeve (9), and the transmission pins (11) and the notch grooves (13) are in clamping and matching connection to realize linkage of the connecting sleeve (9) and the connecting head (10). The elastic members (12) are rubber sleeves or a plurality of stacked O-rings. The connecting sleeve (9) is in interference fit or threaded connection with the shaft end of the motor shaft (1).

2. The mounting structure of a motor brake and encoder according to claim 1, characterized by, The connecting head (10) and the measuring rod of the encoder (4) are locked by radial screws (14).

3. The mounting structure of a motor brake and encoder according to claim 1, characterized by, The brake outer cover (7) is provided with first bolts (15) passing through the motor end cover (2) and in threaded connection with the bearing inner cover (6).

4. The mounting structure of a motor brake and encoder according to claim 1, characterized by The lifting seat (8) and the brake outer cover (7) are in plug-in matching connection and fastened by second bolts (16).

5. The mounting structure of a motor brake and encoder according to claim 1, characterized by A plurality of annularly distributed ventilation holes (17) are arranged on the brake outer cover (7) and the lifting seat (8) respectively.

6. The mounting structure of a motor brake and encoder according to claim 1, wherein An outer shell of the encoder (4) is mounted on an encoder seat plate (18), and the encoder seat plate (18) is fixedly connected with the lifting seat (8).

7. The mounting structure of a motor brake and encoder according to claim 1, characterized by ​ 8. The mounting structure of a motor brake and encoder according to claim 1, characterized by ​

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