Planetary reducer structure

Abstract

The utility model discloses a planetary reducer structure and relates to the field of reducer devices, the planetary reducer structure comprises a base and a reducer assembly installed in the base, the reducer assembly comprises a first end cover, a second end cover, a planet wheel, a gear and a sun wheel, and the first end cover and the second end cover are fixedly installed at the two ends of the base respectively. The planet wheel is rotationally installed in the base, the gear is installed at the planet wheel, the sun wheel is located on the periphery of the gear and meshed with the gear, and the base and the speed reducer assembly are both machined and formed through the powder metallurgy technology. According to the planetary reducer structure, reducer assemblies are machined and produced through the powder metallurgy technology, all the assemblies of the reducer can be machined into needed shapes at a time, and light-weight production is achieved. According to the method, the machining step of parts of the speed reducer is avoided, material waste is reduced, and therefore the production cost of the speed reducer assembly is reduced, and the using effect of the speed reducer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, and specifically relates to a planetary speed reducer structure. Background Art

[0002] The planetary speed reducer can play a role in protecting equipment. When the equipment encounters overload or abnormal conditions, the speed reducer can limit the torque of the output shaft through its own structural characteristics or transmission mechanism, thereby avoiding damage to the motor or other power sources. The planetary speed reducer is formed by combining multiple components.

[0003] The planetary speed reducer is an important component of humanoid robots, and the humanoid robot industry has requirements for the planetary speed reducer such as lightweight and small volume. To meet these requirements, after the parts are formed, machining is usually required, such as cutting, drilling and other operations. These processes not only cause material waste, but also are complex, thus increasing the production cost of the speed reducer and reducing the production efficiency.

[0004] In addition, the existing speed reducer includes an oil injection hole opened on the housing. Lubricating oil is added to the inside of the speed reducer through the oil injection hole. The lubricating oil can lubricate the internal speed reducer components. When the speed reducer is used for a long time, the oil injection hole of the speed reducer is in an exposed state. Impurities such as dust, oil stains, and metal particles in the outside world may enter the inside of the speed reducer through the oil injection hole. These impurities will gradually accumulate and may eventually cause the oil injection hole to be blocked. Once the oil injection hole is blocked, the oil injection operation cannot be carried out normally, thereby affecting the lubrication effect of the speed reducer. Aiming at the deficiencies of the existing technology, we propose a planetary speed reducer structure to solve the above problems. Content of the Utility Model

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A planetary speed reducer structure includes a base and a speed reducer component installed inside the base. The speed reducer component includes a first end cover, a second end cover, planetary gears, gears and a sun gear. The first end cover and the second end cover are respectively fixedly installed at both ends of the base. The planetary gears are rotatably installed inside the base. The gears are installed at the planetary gears. The sun gear is located on the outer periphery of the gears and meshes with the gears. Both the base and the speed reducer component are processed and formed by powder metallurgy technology.

[0006] Preferably, an oil injection hole is opened on the base. Multiple groups of the oil injection holes are equidistantly distributed along the outer periphery of the base. A protective component is arranged on the outer peripheral wall of the base. The protective component protects the oil injection hole. A locking component is arranged on the outer peripheral wall of the base. The locking component installs and locks the protective component and the base.

[0007] Preferably, the protection component includes a protection sleeve sleeved on the outer peripheral wall of the base, and the inner side wall of the protection sleeve fits against the outer side wall of the base.

[0008] Preferably, the locking component includes a mounting plate, a locking thread ring, a locking thread cylinder, a driving plate, a protection plate and a limiting plate.

[0009] Preferably, both the mounting plate and the limiting plate are fixedly sleeved on both sides of the outer peripheral wall of the base, and the driving plate is slidably sleeved on the outer peripheral wall of the base and is located between the mounting plate and the limiting plate.

[0010] Preferably, the locking thread ring is fixedly installed on the outer wall of the driving plate, the locking thread cylinder is fixedly installed on the outer wall of the protection sleeve, and the locking thread ring is threadedly connected inside the locking thread cylinder.

[0011] Preferably, the protection plate is fixedly sleeved on the outer peripheral wall of the driving plate, and the bottom end face of the locking thread ring is higher than the top end face of the limiting plate.

[0012] The utility model discloses a planetary reducer structure, and the beneficial effects thereof are as follows: for this planetary reducer structure, the reducer components are processed and produced by powder metallurgy technology, and each component of the reducer can be processed into the required shape at one time, and lightweight processing and production can be carried out. Furthermore, the machining steps of the reducer parts can be avoided, the waste of materials can be reduced, and thus the production cost of the reducer components can be reduced. At the same time, by installing a protection sleeve at the oil filling hole, impurities such as dust, oil stain, and metal particles in the outside world can be effectively prevented from entering the inside of the reducer through the oil filling hole. In this way, the protection sleeve can block and protect the oil filling hole, thereby improving the use effect and service life of the reducer. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the internal sectional structure of the present utility model;

[0016] Figure 3 It is a schematic diagram of the exploded structure of the protection sleeve and the base of the present utility model;

[0017] Figure 4Schematic diagram of the internal sectional structure after the protective sleeve and the base of the present utility model are locked;

[0018] Figure 5 For the present utility model Figure 2 Schematic diagram of the structure of part A;

[0019] Figure 6 Schematic diagram of the internal explosion structure of the base of the present utility model;

[0020] Figure 7 Schematic diagram of the protective component structure of the present utility model.

[0021] In the figure: 1. Base; 2. First end cover; 3. Second end cover; 4. Planet gear; 5. Gear; 6. Sun gear; 7. Oil injection hole; 8. Protective component; 801. Protective sleeve; 9. Locking component; 901. Mounting plate; 902. Locking thread ring; 903. Locking thread cylinder; 904. Driving plate; 905. Protective plate; 906. Limiting plate. Specific implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0024] An embodiment of the present utility model discloses a planetary reducer structure.

[0025] According to the attached Figures 1 - 7 As shown, it includes a base 1 and a reducer assembly installed inside the base 1. The reducer assembly includes a first end cover 2, a second end cover 3, a planet gear 4, a gear 5 and a sun gear 6. The first end cover 2 and the second end cover 3 are respectively fixedly installed at both ends of the base 1. The planet gear 4 is rotatably installed inside the base 1. The gear 5 is installed at the planet gear 4. The sun gear 6 is located outside the gear 5 and meshes with the gear 5. Both the base 1 and the reducer assembly are processed and formed by powder metallurgy process. By processing and producing the reducer assembly and the base 1 through the powder metallurgy process, each component of the reducer can be processed into the required shape at one time, with lightweight processing and production. Furthermore, the machining steps of the reducer parts can be avoided, and material waste can be reduced.

[0026] An oil injection hole 7 is opened at the base 1. There are various transmission components such as gears and bearings inside the speed reducer. These components will generate friction during operation. The oil injection hole 7 can inject lubricating oil to form an oil film on the surface of the transmission components, reducing the direct contact between metals, thereby reducing the friction coefficient and wear. Good lubrication can extend the service life of the internal parts of the speed reducer and improve the reliability and stability of the speed reducer. Multiple groups of oil injection holes 7 are equidistantly distributed along the outer periphery of the base 1. A protective component 8 is provided on the outer peripheral wall of the base 1. The protective component 8 protects the oil injection holes 7. A locking component 9 is provided on the outer peripheral wall of the base 1. The locking component 9 installs and locks the protective component 8 and the base 1. During use, the speed reducer component is driven to rotate by an external drive motor, so that the input end of the speed reducer component is connected to the equipment, reducing the high speed of the input shaft to the low speed of the output shaft to meet specific working requirements, thereby enabling the deceleration operation of the equipment. The speed reducer component here is an existing mechanical part and will not be elaborated too much here.

[0027] The protective component 8 includes a protective sleeve 801 sleeved on the outer peripheral wall of the base 1. The inner side wall of the protective sleeve 801 is attached to the outer side wall of the base 1. During long-term use, the oil injection hole 7 is in an exposed state. Impurities such as dust, oil stains, and metal particles in the outside world may enter the speed reducer through the oil injection hole 7. These impurities will gradually accumulate and may eventually cause the oil injection hole 7 to be blocked. Once the oil injection hole 7 is blocked, the oil injection operation cannot be carried out normally, affecting the lubrication effect of the speed reducer. At the same time, if the ambient temperature around the oil injection hole 7 is relatively high, or the lubricating oil is exposed to the air for a long time, the lubricating oil may deteriorate. The deteriorated lubricating oil will produce sediment, and these sediments may also block the oil injection hole 7. By providing the protective sleeve 801 on the outside, the oil injection hole 7 can be shielded and protected, improving the use effect of the speed reducer.

[0028] The locking component 9 includes a mounting plate 901, a locking thread ring 902, a locking thread cylinder 903, a driving plate 904, a protective plate 905 and a limiting plate 906. Both the mounting plate 901 and the limiting plate 906 are fixedly sleeved on both sides of the outer peripheral wall of the base 1. The driving plate 904 is slidably sleeved on the outer peripheral wall of the base 1 and is located between the mounting plate 901 and the limiting plate 906. When installing the protective component 8 and the reducer component, first pick up the protective sleeve 801, align one end of the protective sleeve 801 with the base 1, and sleeve it on the outer peripheral wall of the base 1. At this time, one side of the locking thread cylinder 903 is attached to the outer wall of the limiting plate 906. Subsequently, by rotating the protective plate 905, the protective plate 905 drives the driving plate 904 and the locking thread ring 902 to rotate and slidably sleeve on the outer peripheral wall of the base 1, and thread-connect the locking thread ring 902 inside the locking thread cylinder 903. At this time, the driving plate 904 is attached to the other side outer wall of the limiting plate 906. At the same time, the protective plate 905 is sleeved on the outer peripheral wall of the locking thread cylinder 903. For the specific structure after installation and connection, please refer to the attached Figure 4 .

[0029] The locking thread ring 902 is fixedly installed on the outer wall of the driving plate 904. The locking thread cylinder 903 is fixedly installed on the outer wall of the protective sleeve 801. The locking thread ring 902 is thread-connected inside the locking thread cylinder 903. The protective plate 905 is fixedly sleeved on the outer peripheral wall of the driving plate 904. The bottom end face of the locking thread ring 902 is higher than the top end face of the limiting plate 906. Before the locking thread ring 902 and the locking thread cylinder 903 are locked, the driving plate 904 is attached to the inner wall of the mounting plate 901. At the same time, the locking thread ring 902 is located at the top of one side of the limiting plate 906, and the protective plate 905 is located on top of the locking thread ring 902. For the specific details, please refer to the attached Figure 5 . The protective plate 905 can protect the locking thread ring 902 at the bottom, preventing the locking thread ring 902 from being exposed outside and being damaged for a long time, which affects the service performance.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary reducer structure, characterized in that, It includes a base (1) and a speed reducer assembly installed inside the base (1). The speed reducer assembly includes a first end cover (2), a second end cover (3), planet gears (4), gears (5) and a sun gear (6). The first end cover (2) and the second end cover (3) are respectively fixedly installed at both ends of the base (1). The planet gears (4) are rotatably installed inside the base (1). The gears (5) are installed at the planet gears (4). The sun gear (6) is located on the outer periphery of the gear (5) and meshes with the gear (5). Both the base (1) and the speed reducer assembly are processed and formed by powder metallurgy technology.

2. The planetary reducer structure according to claim 1, characterized in that: An oil injection hole (7) is opened at the base (1). Multiple groups of the oil injection holes (7) are equidistantly distributed along the outer periphery of the base (1). A protective assembly (8) is arranged on the outer peripheral wall of the base (1). The protective assembly (8) plays a protective role for the oil injection holes (7). A locking assembly (9) is arranged on the outer peripheral wall of the base (1). The locking assembly (9) installs and locks the protective assembly (8) and the base (1).

3. The planetary reducer structure according to claim 2, characterized in that: The protective assembly (8) includes a protective sleeve (801) sleeved on the outer peripheral wall of the base (1). The inner side wall of the protective sleeve (801) is attached to the outer side wall of the base (1).

4. A planetary speed reducer structure according to claim 3, characterized in that: The locking assembly (9) includes a mounting plate (901), a locking thread ring (902), a locking thread cylinder (903), a driving plate (904), a protective plate (905) and a limiting plate (906).

5. A planetary reducer structure according to claim 4, characterized in that: Both the mounting plate (901) and the limiting plate (906) are fixedly sleeved on both sides of the outer peripheral wall of the base (1). The driving plate (904) is slidably sleeved on the outer peripheral wall of the base (1) and is located between the mounting plate (901) and the limiting plate (906).

6. A planetary reducer structure according to claim 5, characterized in that: The locking thread ring (902) is fixedly installed on the outer wall of the driving plate (904). The locking thread cylinder (903) is fixedly installed on the outer wall of the protective sleeve (801). The locking thread ring (902) is threadedly connected inside the locking thread cylinder (903).

7. A planetary reducer structure according to claim 6, characterized in that: The protective plate (905) is fixedly sleeved on the outer peripheral wall of the driving plate (904). The bottom end face of the locking thread ring (902) is higher than the top end face of the limiting plate (906).

Images