Multi-mode output motor mechanism

Abstract

The invention provides a multi-mode output motor mechanism. The multi-mode output motor mechanism comprises a motor, a motor output shaft, a motor brake disc, a planetary reducer, an electromagnetic clutch and an output shaft, the motor brake disc and the motor output shaft are connected in series and fixed; the planetary reducer comprises a sun gear, a planet carrier and an inner gear, an output shaft of the motor is connected with the sun gear, and the planet carrier is connected with an output shaft; the electromagnetic clutch comprises an electromagnetic clutch movable disc, an electromagnetic clutch static disc, an electromagnetic clutch friction plate and a reset spring. The electromagnetic clutch friction plate and the reset spring are arranged between the electromagnetic clutch movable disc and the electromagnetic clutch static disc; the electromagnetic clutch static disc is fixedly provided with an electromagnetic coil, the electromagnetic clutch movable disc is provided with an electromagnetic coil, the outer cylindrical surface of the electromagnetic clutch movable disc is provided with a gear, and the gear on the outer cylindrical surface of the electromagnetic clutch movable disc is meshed with the outer cylindrical gear of the inner gear ring; according to different working conditions, the output state of the motor mechanism can be switched into multiple modes, so that the working requirements in different states are met.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission, and in particular to a multi-mode output motor mechanism. Background Art

[0002] The output state of most traditional motor mechanisms is generally a fixed mode, that is, the motor transmits power to the actuator, that is, the output shaft, through the reducer for power output, which can only cope with one working condition; for some working conditions that require the output shaft to follow, in order to ensure the reliability of power transmission, the electric mechanism is generally designed to have a motor without a brake, and the power transmission route in the following state is output shaft-reducer-motor. In this state, the friction torque will increase, and the internal coil of the motor will generate induced current to cause heat, etc. In actual use, the advantages outweigh the disadvantages.

[0003] Therefore, there is an urgent need for a multi-mode output electric mechanism whose output state can be switched according to load requirements to overcome the above technical defects and meet working requirements under different states. Summary of the invention

[0004] In order to solve the above technical problems, this patent provides a multi-mode output motor mechanism that can be switched according to load requirements to solve the heating phenomenon caused by the output shaft of the electric mechanism.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions, providing a multi-mode output motor mechanism, including: a motor, a motor output shaft, a motor brake disc, a planetary reducer, an electromagnetic clutch and an output shaft; the motor brake disc is fixed in series with the motor output shaft;

[0006] The planetary reducer comprises a sun gear, a planet carrier and an internal gear. The outer cylindrical surface of the sun gear of the planetary reducer is provided with sun gears, the planet carrier is evenly provided with planet gears, the outer cylindrical surface of the inner gear ring is provided with gears, the sun gears are meshed with the planet gears, and the planet gears are meshed with the inner gear ring; the motor output shaft is connected to the sun gear, and the planet carrier is connected to the output shaft;

[0007] The electromagnetic clutch comprises an electromagnetic clutch moving plate, an electromagnetic clutch stationary plate, an electromagnetic clutch friction plate and a reset spring; the electromagnetic clutch moving plate is coaxial with the electromagnetic clutch stationary plate, and electromagnetic clutch friction plates are arranged on the opposite surfaces of the electromagnetic clutch moving plate and the electromagnetic clutch stationary plate; the reset spring is arranged between the electromagnetic clutch moving plate and the electromagnetic clutch stationary plate;

[0008] The electromagnetic clutch static plate is provided with an electromagnetic coil and is fixedly arranged, the electromagnetic clutch movable plate is provided with an electromagnetic coil and its outer cylindrical surface is provided with a gear, and the outer cylindrical surface gear of the electromagnetic clutch movable plate is meshed with the outer cylindrical gear of the inner gear ring.

[0009] Optionally, the electromagnetic clutch further comprises a supporting shell, and the electromagnetic clutch stator is fastened to the supporting shell by screws.

[0010] Optionally, the multi-modal output motor mechanism further includes: a control module and an electrical interface, wherein the control module is used to electrically control the motor and the electromagnetic clutch; and the electrical interface is used to interconnect with external electrical devices.

[0011] Optionally, the control module is fixed to the supporting shell by using hexagonal studs.

[0012] Optionally, the electrical interface is arranged near the control module and is fixed to the supporting shell with screws.

[0013] Optionally, the multi-modal output motor mechanism further includes a slewing support bearing, and the slewing support bearing is meshed with the outer cylindrical gear of the inner gear ring.

[0014] Optionally, a circumferential groove is provided on the outer cylindrical surface of the inner gear ring, a gear is provided in the groove, and the outer ring of the slewing support bearing is embedded in the groove and meshes with the gear in the groove.

[0015] Optionally, the inner gear ring of the planetary reducer adopts four slewing support bearings for radial and axial positioning.

[0016] Optionally, the motor and the external supporting shell are fastened by means of screws, and the output shaft of the motor is fixedly connected with the sun gear of the planetary reducer by means of a keyway.

[0017] Optionally, the operating modes of the multi-modal output electric mechanism include a direct power output mode, a power interruption mode, a follow-up mode and a torque holding mode.

[0018] Beneficial Effects

[0019] The multi-modal output electric mechanism of the present application can switch the working state of its output shaft according to the load demand when the electric mechanism is working. It can be switched to the direct power output mode: that is, the motor inside the electric mechanism rotates, and then drives the output shaft to directly output power; it can be switched to the power discontinuity mode: that is, the motor inside the electric mechanism rotates, but the output shaft has no power output; it can be switched to the follow-up mode: that is, the output shaft of the motor mechanism rotates freely with the load, and the friction torque can be basically ignored; it can be switched to the torque holding mode: that is, the electromagnetic clutch is energized, the motor is not energized, and its brake disc is in a braking state. At this time, according to the internal structural strength, the output shaft can withstand a certain torque load. According to different working conditions, the output state of the motor mechanism can be switched to multiple modes to meet the working requirements under different conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the structure of a multi-mode output motor mechanism provided in an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of a partial cross-sectional structure of a multi-mode output motor mechanism provided in an embodiment of the present application;

[0023] Figure 3 It is a schematic structural diagram of a planetary reducer of a multi-mode output motor mechanism provided in an embodiment of the present application;

[0024] Figure 4 It is a mechanical principle diagram provided in an embodiment of the present application.

[0025] Among them, 1 is the motor; 2 is the motor output shaft; 3 is the motor brake disc; 4 is the planetary reducer; 4-1 is the sun gear; 4-2 is the planetary carrier; 4-3 is the internal gear; 5 is the electromagnetic clutch; 5-1 is the electromagnetic clutch moving disc; 5-2 is the electromagnetic clutch stationary disc; 5-3 is the electromagnetic clutch friction plate; 6 is the output shaft; 7 is the slewing support bearing; 8 is the support housing; 9 is the control module; 10 is the electrical interface. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings and examples, but it should be noted that these implementation methods are not limitations of the present application, and equivalent changes or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these implementation methods are all within the scope of protection of the present application.

[0027] In the description of the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the creation of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the creation of the present application.

[0028] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0029] 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 an indirect connection 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 invention of this application can be understood by specific circumstances.

[0030] like Figure 1-3 As shown, a multi-mode output motor mechanism is provided, comprising: a motor 1, a motor output shaft 2, a motor brake disc 3, a planetary reducer 4, an electromagnetic clutch 5 and an output shaft 6; the motor brake disc 3 is fixed in series with the motor output shaft 2;

[0031] The planetary reducer 4 comprises a sun gear 4-1, a planet carrier 4-2 and an inner gear 4-3. The outer cylindrical surface of the sun gear 4-1 of the planetary reducer 4 is provided with a sun gear, the planet carrier 4-2 is evenly provided with planetary gears, the outer cylindrical surface of the inner gear ring 4-3 is provided with an outer cylindrical gear, the sun gear is meshed with the planetary gear, and the planetary gear is meshed with the inner gear ring 4-3; the motor output shaft 2 is connected to the sun gear 4-1, and the planet carrier 4-2 is connected to the output shaft 6;

[0032] The electromagnetic clutch 5 comprises an electromagnetic clutch moving disc 5-1, an electromagnetic clutch stationary disc 5-2, an electromagnetic clutch friction plate 5-3 and a reset spring; the electromagnetic clutch moving disc 5-1 is coaxial with the electromagnetic clutch stationary disc 5-2, and the electromagnetic clutch friction plates 5-3 are arranged on the opposite surfaces of the electromagnetic clutch moving disc 5-1 and the electromagnetic clutch stationary disc 5-2; the reset spring is arranged between the electromagnetic clutch moving disc 5-1 and the electromagnetic clutch stationary disc 5-2;

[0033] The electromagnetic clutch static plate 5-2 is provided with an electromagnetic coil and is fixedly arranged, the electromagnetic clutch dynamic plate 5-1 is provided with an electromagnetic coil and its outer cylindrical surface is provided with a gear, and the outer cylindrical surface gear of the electromagnetic clutch dynamic plate 5-1 is meshed with the outer cylindrical gear of the inner gear ring 4-3.

[0034] In some embodiments, the electromagnetic clutch 5 further includes a supporting shell 8, and the electromagnetic clutch stator plate 5-2 is fastened to the supporting shell 8 by screws.

[0035] In some embodiments, the multi-modal output motor mechanism further includes: a control module 9 and an electrical interface 10, wherein the control module 9 is used to electrically control the motor 1 and the electromagnetic clutch 5; and the electrical interface 10 is used to interconnect with external electrical devices.

[0036] Specifically, a control module 9 is provided at the rear of the electromagnetic clutch 5 for electrically controlling the motor 1 and the electromagnetic clutch 5 .

[0037] In some embodiments, the control module 9 is fixed to the support shell 8 by using hexagonal studs; the electrical interface 10 is arranged near the control module 9 and fixed to the support shell 8 by using screws.

[0038] In some embodiments, the multi-modal output motor mechanism also includes a slewing support bearing 7, a circumferential groove is provided on the outer cylindrical surface of the inner gear ring 4-3, a gear is provided in the groove, and the outer ring of the slewing support bearing 7 is embedded in the groove and meshes with the gear in the groove.

[0039] In some embodiments, the inner gear ring 4-3 of the planetary reducer 4 is radially and axially positioned by four slewing bearings 7. Since the inner gear ring 4-3 of the planetary reducer 4 is meshed with the outer cylindrical gear of the electromagnetic clutch moving plate 5-1, the two can rotate together or stop each other.

[0040] Specifically, when the inner gear ring 4-3 is fixed, the input end of the planetary reducer 4 is the motor output shaft 2, and the motor output shaft 2 drives the sun gear 4-1 to rotate, and the sun gear is meshed with the planetary gear 4-2-1, and the planetary gear is installed on the planetary carrier 4-2, and the planetary carrier 4-2 is connected to the output shaft 6, and then the power of the motor output shaft 2 is transmitted to the output shaft 6 after being decelerated and torque-increased by the planetary reducer 4; at the same time, gears are designed on the outer cylindrical surface of the inner gear ring 4-3. Since the inner gear ring 4-3 needs to rotate in a circle, a slewing support bearing 7 is symmetrically arranged on its circumferential part, and a circumferential groove is designed on the outer cylindrical surface of the inner gear ring 4-3. The outer ring of the slewing support bearing 7 is embedded in the groove, thereby limiting its axial and radial displacement when the inner gear ring 4-3 rotates. At the same time, since the inner and outer rings of the slewing support bearing 7 can rotate freely, the inner gear ring 4-3 can also rotate.

[0041] In some embodiments, the motor 1 is fastened to the external support housing 7 by means of screws, and the motor output shaft 2 is fixedly connected to the sun gear of the planetary reducer 4 by means of a keyway.

[0042] like Figure 4As shown, when the electromagnetic clutch 5 is energized, the electromagnetic clutch moving plate 5-1 and the electromagnetic clutch stationary plate 5-2 are combined under the action of electromagnetic force, and the electromagnetic clutch friction plate 5-3 friction between the two ensures that the electromagnetic clutch moving plate 5-1 cannot rotate freely (at this time, the inner gear ring 4-3 of the planetary reducer 4 cannot rotate freely either). When the electromagnetic clutch 5 is not energized, the electromagnetic clutch moving plate 5-1 is separated from the electromagnetic clutch stationary plate 5-2 under the action of the spring, and can rotate freely at this time (thereby driving the inner gear ring 4-3 of the planetary reducer 4 to rotate freely). Therefore, in the normal non-powered state, the motor brake disc 3 is in a braking state (that is, the motor shaft 2 cannot rotate freely), the electromagnetic clutch 5 is in a separated state, and the electromagnetic clutch moving disc 5-1 can rotate freely; when the motor 1 is normally powered, the motor brake disc 3 is disengaged, and the motor 1 can rotate and work, and when the electromagnetic clutch 5 is normally powered, its electromagnetic clutch moving disc 5-1 will be attracted to the electromagnetic clutch static disc 5-2 under the action of electromagnetic force and remain stationary; therefore, different working modes of the electric mechanism are evolved according to whether the motor is powered on and whether the electromagnetic clutch is powered on.

[0043] The multi-mode output electric mechanism of this application has the following working modes:

[0044] 1) When the working mode is the direct power output mode, the electromagnetic clutch 5 is energized, and the electromagnetic clutch moving plate 5-1 and the electromagnetic clutch static plate 5-2 are attracted. At this time, the electromagnetic clutch moving plate 5-1 is meshed with the outer cylindrical gear 4-3-1 of the inner ring gear 4-3 of the planetary reducer 4, that is, the inner ring gear 4-3 of the planetary reducer 4 remains fixed, and the motor output shaft 2 drives the sun gear 4-1 to rotate, and the sun gear is meshed with the planetary gear, and the planetary gear is installed on the planetary carrier 4-2, and the planetary carrier 4-2 is connected to the output shaft 6, and then the power of the motor output shaft 2 is transmitted to the output shaft 6 after being decelerated and torque-increased by the planetary reducer 4; at this time, the power transmission route is motor 1-motor output shaft 2-planetary reducer 4-output shaft 6.

[0045] 2) When the working mode is the power interruption mode, the electromagnetic clutch 5 is not energized, and the electromagnetic clutch moving plate 5-1 and the electromagnetic clutch static plate 5-2 are separated under the action of spring force. At this time, because the electromagnetic clutch moving plate 5-1 is in a free state, that is, the inner ring gear 4-3 of the planetary reducer 4 remains in a free state, the motor output shaft 2 drives the sun gear 4-1 to rotate, and the sun gear is meshed with the planetary gear, and the planetary gear is meshed with the outer cylindrical gear of the inner ring gear 4-3. Because the electromagnetic clutch moving plate 5-1 is meshed with the outer cylindrical gear of the inner ring gear 4-3 of the planetary reducer 4, the power of the motor output shaft 2 is transmitted to the electromagnetic clutch moving plate 5 through the planetary reducer 4; at this time, the power transmission route is motor 1-motor output shaft 2-planetary reducer 4-electromagnetic clutch moving plate 5.

[0046] 3) When the working mode is the follow-up mode, the motor 1 is not energized, the electromagnetic clutch 5 is not energized, the electromagnetic clutch moving plate 5-1 and the electromagnetic clutch static plate 5-2 are separated under the action of the spring force, and the external load can drive the output shaft 2 to rotate, and the output shaft 2 drives the inner gear ring 4-3 of the planetary reducer 4 to rotate, and then can drive the electromagnetic clutch moving plate 5-1 to rotate freely.

[0047] 4) When the working mode is the torque holding mode, the motor 1 is not energized, the electromagnetic clutch 5 is energized, the electromagnetic clutch moving plate 5-1 and the electromagnetic clutch static plate 5-2 are attracted, that is, the inner ring gear 4-3 of the planetary reducer 4 is in a fixed state. At this time, the external load transfers the load to the planetary reducer 4 through the output shaft 2, and then is borne by the motor brake disc 3, that is, the load is borne by the motor mechanism.

[0048] The multi-mode output motor of the present application is input by the planetary reducer sun gear 4-1 and output by the planetary gear carrier 4-2. The electromagnetic clutch moving plate 5 can switch between the free state and the fixed state according to the power-on state, and the inner gear ring 4-3 switches between the free state and the fixed state according to the state of the electromagnetic clutch moving plate 5. Therefore, according to the different working states of the motor and the electromagnetic clutch, a variety of mode output states can be formed.

[0049] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A multi-mode output motor mechanism, characterized in that: include: A motor, a motor output shaft, a motor brake disc, a planetary reducer, an electromagnetic clutch and an output shaft; the motor brake disc is fixed in series with the motor output shaft; The planetary reducer comprises a sun gear, a planet carrier and an internal gear. The outer cylindrical surface of the sun gear of the planetary reducer is provided with sun gears, the planet carrier is evenly provided with planet gears, the outer cylindrical surface of the inner gear ring is provided with gears, the sun gears are meshed with the planet gears, and the planet gears are meshed with the inner gear ring; the motor output shaft is connected to the sun gear, and the planet carrier is connected to the output shaft; The electromagnetic clutch comprises an electromagnetic clutch moving plate, an electromagnetic clutch stationary plate, an electromagnetic clutch friction plate and a reset spring; the electromagnetic clutch moving plate is coaxial with the electromagnetic clutch stationary plate, and electromagnetic clutch friction plates are arranged on the opposite surfaces of the electromagnetic clutch moving plate and the electromagnetic clutch stationary plate; the reset spring is arranged between the electromagnetic clutch moving plate and the electromagnetic clutch stationary plate; The electromagnetic clutch static plate is provided with an electromagnetic coil and is fixedly arranged, the electromagnetic clutch movable plate is provided with an electromagnetic coil and its outer cylindrical surface is provided with a gear, and the outer cylindrical surface gear of the electromagnetic clutch movable plate is meshed with the outer cylindrical gear of the inner gear ring.

2. A multi-mode output motor mechanism as claimed in claim 1, characterized in that: The electromagnetic clutch also includes a supporting shell, and the electromagnetic clutch static disk is fastened to the supporting shell by screws.

3. A multi-mode output motor mechanism as claimed in claim 1, characterized in that: The multi-modal output motor mechanism also includes: a control module and an electrical interface, wherein the control module is used to electrically control the motor and the electromagnetic clutch; and the electrical interface is used to interconnect with external electrical devices.

4. A multi-mode output motor mechanism as claimed in claim 3, characterized in that: The control module is fixed on the supporting shell by using hexagonal studs.

5. A multi-mode output motor mechanism as claimed in claim 3, characterized in that: The electrical interface is arranged near the control module and is fixed to the supporting shell by screws.

6. A multi-mode output motor mechanism as claimed in claim 1, characterized in that: The multi-mode output motor mechanism further includes a slewing support bearing, which is meshed with the outer cylindrical gear of the inner gear ring.

7. A multi-mode output motor mechanism as claimed in claim 6, characterized in that: A circumferential groove is provided on the outer cylindrical surface of the inner gear ring, a gear is provided in the groove, and the outer ring of the slewing support bearing is embedded in the groove and meshed with the gear in the groove.

8. A multi-mode output motor mechanism as claimed in claim 7, characterized in that: The inner gear ring of the planetary reducer adopts four slewing support bearings for radial and axial positioning.

9. A multi-mode output motor mechanism as claimed in claim 1, characterized in that: The motor is fastened to the external supporting shell by means of screws, and the output shaft of the motor is fixedly connected with the sun gear of the planetary reducer by means of a keyway.

10. A multi-mode output motor mechanism as claimed in claim 1, characterized in that: The working modes of the multi-mode output electric mechanism include a direct power output mode, a power interruption mode, a follow-up mode and a torque holding mode.

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