Speed reduction motor capable of adjusting output torque

Abstract

The utility model discloses a gear motor capable of adjusting output torque, which belongs to the technical field of gear motors and comprises a motor, a gear reducer, a planetary transmission structure and an armature, the output end of the motor is connected with an output shaft, and a transmission gear is arranged at the outer end of the output shaft; the gear reducer is connected with the output end of the motor, and an electromagnetic clutch device is arranged in the gear reducer close to the motor; the planetary transmission structure is arranged in the gear reducer and close to the electromagnetic clutch device, a gap is reserved between the planetary transmission structure and the electromagnetic clutch device, and an elastic piece is arranged between the planetary transmission structure and the electromagnetic clutch device; the armature is arranged on the outer side of the planetary transmission structure. According to the utility model, the rotation degree of the planetary gear ring is controlled by controlling the magnitude of current and the magnetic field of the electromagnetic clutch device through the electromagnetic clutch device, so that a slip ratio exists between the inner gear ring and the pinion, thereby controlling the torque output to the gear reduction box by the second transmission gear and realizing the effect of adjustable torque.

Description

Technical Field

[0001] This utility model relates to the field of geared motor technology, specifically to a geared motor with adjustable output torque. Background Technology

[0002] A geared motor is a combination of a gear reducer and a motor. With the rapid development of the geared motor industry, more and more industries and companies are using geared motors, and many companies are growing and expanding within this industry. Geared motors are characterized by high strength, small size, low noise, high transmission torque, and long lifespan, and are widely used in machinery and equipment in industries such as petroleum, chemical, light industry, textiles, food, plastics, pharmaceuticals, ceramics, printing and dyeing, metallurgy, mining, tobacco, papermaking, leather making, woodworking, electronic instruments, glass, and environmental protection.

[0003] The output torque of a typical geared motor is fixed and cannot be adjusted. Over time, the wear inside the motor will increase, and under some working conditions, it may even operate under overload, affecting work efficiency and shortening the service life of the geared motor. Utility Model Content

[0004] The purpose of this invention is to provide a geared motor with adjustable output torque to solve the problem of output torque adjustment in geared motors, improve efficiency, and extend motor life.

[0005] Technical Solution: This utility model provides a geared motor with adjustable output torque, comprising: a motor, a gear reducer, a planetary transmission structure, and an armature. The output end of the motor is connected to an output shaft, and a transmission gear is disposed at the outer end of the output shaft. The gear reducer is connected to the output end of the motor, and an electromagnetic clutch is disposed inside the gear reducer close to the motor. The planetary transmission structure is disposed inside the gear reducer, close to the electromagnetic clutch, with a gap between them. A spring is disposed between the planetary transmission structure and the electromagnetic clutch. The armature is disposed on the outer side of the planetary transmission structure. The electromagnetic clutch enables the planetary transmission structure and the armature to rotate in tandem. When the electromagnetic clutch is not engaged, the planetary transmission structure rotates freely, and the gear reducer does not output torque. When energized, the magnetic force of the electromagnetic clutch is controlled according to the magnitude of the input current, thereby controlling the stationary or rotating degree of the planetary transmission structure, and the planetary transmission structure outputs torque to the reducer.

[0006] Furthermore, in the aforementioned adjustable output torque reduction motor, the planetary transmission structure includes: a planetary gear ring, a gear carrier, and pinions. The planetary gear ring has an internal gear ring and a through hole in the middle for the transmission gear to enter. The gear carrier is located on the outside of the planetary gear ring. There are three pinions, which are evenly distributed on the gear carrier and mesh with the transmission gear and the internal gear ring of the planetary gear ring.

[0007] Furthermore, in the aforementioned adjustable output torque reduction motor, three positioning rods are evenly distributed on one side of the gear carrier towards the inner gear ring, and a second transmission gear is positioned in the middle of the other side. The positioning rods are used to connect to the pinion. When the electromagnetic clutch is engaged, if the planetary gear ring is held and cannot rotate, the pinion rotates around it, causing the gear carrier to rotate, thereby rotating the second transmission gear and outputting torque to the gear reducer.

[0008] Furthermore, in the aforementioned adjustable output torque reduction motor, the gap between the planetary transmission structure and the electromagnetic clutch device is less than or equal to 0.5 mm. This allows the planetary transmission structure to automatically recover on its own after the electromagnetic clutch device is de-energized, thanks to the spring plates.

[0009] Furthermore, in the aforementioned adjustable output torque reduction motor, the spring is made of an elastic material.

[0010] Furthermore, in the aforementioned adjustable output torque reduction motor, the second transmission gear is fixedly connected to the gear carrier, and the second transmission gear meshes with the gear set in the gear reducer.

[0011] Furthermore, in the aforementioned adjustable output torque reduction motor, the armature has a ring structure with a diameter consistent with that of the planetary gear ring, and the gear carrier rotates within the inner ring of the armature.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects: The adjustable output torque reduction motor of this utility model uses an electromagnetic clutch device to link the planetary transmission structure with the armature. When the electromagnetic clutch device is not engaged, the planetary transmission structure rotates freely, and the gear reducer does not output torque. When the electromagnetic clutch device is engaged, the planetary gear ring is held in place and cannot rotate, so the pinion rotates and drives the gear carrier to rotate, thereby causing the second transmission gear to rotate and output torque to the gear reducer. By controlling the magnitude of the current, the degree of attraction is controlled, thereby controlling the degree of rotation of the planetary gear ring, so that there is a slip ratio between the internal gear ring and the pinion, thereby controlling the torque output by the second transmission gear to the gear reducer, thus achieving the effect of adjustable torque. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a geared motor with adjustable output torque according to the present invention.

[0014] Figure 2 This is a schematic diagram of the planetary transmission structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the planetary transmission of this utility model;

[0016] Figure 4This is a schematic diagram of the gear frame of this utility model.

[0017] In the diagram: 1. Motor; 2. Gear reducer; 3. Planetary transmission structure; 4. Armature; 11. Output shaft; 12. Transmission gear; 21. Electromagnetic clutch; 31. Planetary gear ring; 32. Gear carrier; 33. Pinion; 321. Second transmission gear. Detailed Implementation

[0018] Example 1

[0019] like Figure 1-2 The adjustable output torque geared motor shown includes: a motor 1, a gear reducer 2, a planetary transmission structure 3, and an armature 4. The output end of the motor 1 is connected to an output shaft 11, and a transmission gear 12 is provided at the outer end of the output shaft 11. The gear reducer 2 is connected to the output end of the motor 1, and an electromagnetic clutch device 21 is provided inside the gear reducer 2 close to the motor 1. The planetary transmission structure 3 is located inside the gear reducer 2, close to the electromagnetic clutch device 21, with a gap between them. A spring made of elastic material is provided between the planetary transmission structure 3 and the electromagnetic clutch device 21. The armature 4 is located on the outside of the planetary transmission structure 3. The planetary transmission structure 3 and the armature 4 are linked by the electromagnetic clutch device 21. When the electromagnetic clutch device 21 is not engaged, the planetary transmission structure 3 rotates freely, and the gear reducer 2 does not output torque. When energized and engaged, the magnetic force of the electromagnetic clutch device 21 is controlled according to the magnitude of the input current, thereby controlling the degree of fixation or rotation of the planetary transmission structure 3, and the planetary transmission structure 3 outputs torque to the gear reducer.

[0020] like Figure 2-3 The diagram shows a geared motor with adjustable output torque. The planetary transmission structure 3 includes: a planetary gear ring 31, a gear carrier 32, and pinions 33. The planetary gear ring 31 has an internal gear ring inside and a through hole in the middle for the transmission gear 12 to enter. The gear carrier 32 is located on the outside of the planetary gear ring 31. There are three pinions 33, which are evenly distributed on the gear carrier 32 and mesh with the transmission gear 12 and the internal gear ring of the planetary gear ring 31.

[0021] Example 2

[0022] Based on Example 1, in this example, as... Figure 2-4The diagram illustrates a geared motor with adjustable output torque. Three positioning rods are evenly distributed on one side of the gear carrier 32 towards the inner gear ring, while a second transmission gear 321 is positioned in the middle of the other side. The positioning rods connect to a pinion 33. When the electromagnetic clutch 21 engages, the planetary gear ring 31 is held in place and cannot rotate. The pinion 33 rotates around the planetary gear carrier 32, causing it to rotate. This, in turn, rotates the second transmission gear 321, outputting torque to the gear reducer 2. By controlling the magnitude of the current, the degree of engagement is controlled, thereby controlling the rotation of the planetary gear ring 31 and creating a slip ratio between the inner gear ring and the pinion 33. This controls the torque output from the second transmission gear 321 to the gear reducer 2, achieving adjustable torque.

[0023] In this embodiment, the gap between the planetary transmission structure 3 and the electromagnetic clutch device 21 is less than or equal to 0.5 mm. This allows the planetary transmission structure 3 to automatically recover on its own after the electromagnetic clutch device 21 is de-energized.

[0024] In this embodiment, the second transmission gear 321 is fixedly connected to the gear carrier 32, and the second transmission gear 321 meshes with the gear set in the gear reducer 2.

[0025] like Figure 2 The present invention relates to a geared motor with adjustable output torque, wherein the armature 4 is a ring structure with a diameter consistent with that of the planetary gear ring 31, and the gear carrier 32 rotates within the inner ring of the armature 4.

[0026] It should be noted that the above description is merely a technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the present utility model, and all such modifications and substitutions should be covered within the scope of the claims of the present utility model.

Claims

1. A variable output torque reduction motor characterized by: The utility model relates to a kind of electric motor and gear box, including: Motor (1), the output end of the motor (1) is connected output shaft (11), the outer end of the output shaft (11) is provided with transmission gear (12); Gear reduction box (2), the gear reduction box (2) is connected the output end of motor (1), gear reduction box (2) is arranged inside close to the position of motor (1) electromagnetic clutch device (21); Planetary transmission structure (3), the planetary transmission structure (3) is arranged in gear reduction box (2), is arranged close to electromagnetic clutch device (21), and leave gap with electromagnetic clutch device (21), and spring piece is equipped between planetary transmission structure (3) and electromagnetic clutch device (21); Armature (4), the armature (4) is arranged outside planetary transmission structure (3).

2. A variable output torque reduction motor according to claim 1, characterized in that: The planetary transmission structure (3) includes: planetary gear ring (31), gear carrier (32), pinion (33), the inner tooth ring is equipped in the planetary gear ring (31), middle is equipped with through-hole, the through-hole is entered for transmission gear (12), the gear carrier (32) is arranged outside planetary gear ring (31), the pinion (33) has three, and is evenly distributed and arranged on gear carrier (32), and is engaged with transmission gear (12) and planetary gear ring (31) inner tooth ring.

3. A variable output torque reduction motor according to claim 2, characterized in that: Gear carrier (32) is evenly distributed and arranged with three positioning rods to inner tooth ring side, and second transmission gear (321) is arranged in the middle of other side, and the positioning rod is used to connect pinion (33).

4. A variable output torque reduction motor as set forth in claim 1, wherein: The gap between the planetary transmission structure (3) and electromagnetic clutch device (21) is less than or equal to 0.5mm.

5. A variable output torque reduction motor as set forth in claim 1, wherein: The spring piece is made of elastic material.

6. A variable output torque reduction motor as set forth in claim 3, characterized by: Second transmission gear (321) is fixedly connected with gear carrier (32), and second transmission gear (321) is engaged with gear set in gear reduction box (2).

7. A variable output torque reduction motor as set forth in claim 2, wherein: The armature (4) is annular structure, diameter is consistent with planetary gear ring (31), and the gear carrier (32) rotates inside the inner ring of armature (4).

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