High-precision three-stage planetary gear

Abstract

The utility model relates to the technical field of planetary gears, in particular to a high-precision three-stage planetary gear which is characterized in that a clamping groove is formed in a planetary gear carrier, a sun gear connecting mechanism is arranged on the planetary gear carrier, and a bearing is arranged on the sun gear connecting mechanism; the second shell is provided with a mounting plate, a mounting column arranged on the mounting plate can be clamped into a positioning hole formed in a fixing plate arranged on the side face of the first shell or the third shell and is connected with a fixing nut, and pressing blocks are arranged on the side faces of the third shell, the second shell and the first shell; the device has the beneficial effects that when the device is maintained, locking of the device is relieved by screwing and taking down the fixing bolts, the device can be disassembled into three parts, personnel can maintain planet pinions of planet carriers on all the parts and sun gears on the sun gear connecting mechanism, operation is easy, and the device is convenient to use. And later maintenance work of personnel is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of planetary gear technology, specifically a high-precision three-stage planetary gear. Background Technology

[0002] Planetary gears are gear systems that, in addition to rotating around their own axis like fixed-axis gears, also have their axis of rotation rotating around the axes of other gears along with the planet carrier. Rotation around their own axis is called "rotation," and rotation around the axes of other gears is called "revolution," just like the planets in the solar system, hence the name.

[0003] In the prior art, the three-stage planetary gear is a complex and efficient transmission device, which is widely used in various mechanical equipment, especially in applications requiring high reduction ratios and compact structures. The planetary pinion and sun gear are both housed within this device.

[0004] However, traditional three-stage planetary gears are inconvenient for personnel to perform maintenance work. The three-stage planetary gear has three layers of planetary pinions and sun gear stacked inside. Workers usually need to open the device and disassemble the upper planetary pinions and sun gear before they can disassemble the lower planetary pinions and sun gear for maintenance work. The operation is complicated and inconvenient for actual use. Therefore, this utility model proposes a high-precision three-stage planetary gear to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision three-stage planetary gear to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision three-stage planetary gear, including a planetary gear carrier, a slot on the planetary gear carrier, a sun gear connecting mechanism on the planetary gear carrier, and a bearing on the sun gear connecting mechanism;

[0007] The second outer shell is provided with a mounting plate. The mounting post on the mounting plate can be inserted into the positioning hole on the fixing plate on the side of the first or third outer shell and connected with the fixing nut. The third outer shell, the second outer shell and the side of the first outer shell are provided with pressing blocks.

[0008] Preferably, the pressing block has an "L"-shaped plate structure, one end of the pressing block is stuck in the square groove and can slide along the square groove into the slot opened on the planetary gear carrier, the slot having a square groove structure.

[0009] Preferably, the third outer shell is mounted on the second outer shell, and square grooves are provided on the sides of the second outer shell, the third outer shell, and the first outer shell. The square grooves have a square groove structure.

[0010] Preferably, the mounting plate is in a square plate structure, the mounting plate is fixedly connected with the side surface of the second shell, the planetary gear carrier is arranged in the second shell, the planetary gear carrier is fixedly connected with the sun gear connecting mechanism, and the sun gear connecting mechanism is a combination of a small-diameter cylinder with a sun gear fixedly arranged at one end and a large-diameter circular plate.

[0011] Preferably, the first shell is mounted on the second shell, bearings are fixedly arranged in the second shell, the third shell and the first shell, and the bearings are fixedly arranged on the sun gear connecting mechanism.

[0012] Preferably, the pressing block is provided with a limiting groove, the limiting groove is in a 'convex' groove structure, a limiting block is arranged in the limiting groove, the limiting block is in a 'convex' plate structure, the limiting block is fixedly connected with the fixing block, and the fixing block is threadedly connected with the pressing block through the fixing bolt.

[0013] Preferably, the mounting plate is fixedly connected with a mounting column, the mounting column is in a cylindrical structure, a thread is arranged at one end of the mounting column, and the mounting column can be threadedly connected with a fixing nut through a positioning hole arranged in a fixing plate fixedly connected with the side surface of the first shell and the third shell.

[0014] Compared with the prior art, the high-precision three-stage planetary gear has the advantages that:

[0015] The high-precision three-stage planetary gear has the advantages that: the device is divided into three parts, each part is provided with a planetary pinion and a sun gear, the device is locked by rotating and removing the fixing bolt, the device can be divided into three parts, the sun gear on the sun gear connecting mechanism and the planetary pinion on the planetary gear carrier of each part can be maintained, and the operation is simple and convenient for personnel maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a device structure schematic view of the utility model;

[0017] Figure 2 It is a device structure schematic view of the utility model; Figure 1 It is an enlarged structure schematic view of position A in the device structure schematic view;

[0018] Figure 3 It is a device internal structure schematic view of the utility model;

[0019] Figure 4 It is an enlarged structure schematic view of position B in the device internal structure schematic view; Figure 3

[0020] It is an enlarged structure schematic view of position C in the device internal structure schematic view; Figure 5 Figure 3

[0021] ​​Figure 6 The device partial structure schematic view.

[0022] In the figure: 1, first shell; 2, second shell; 3, third shell; 4, pressing block; 5, limiting groove; 6, fixed block; 7, limiting block; 8, fixed bolt; 9, fixed plate; 10, positioning hole; 11, mounting plate; 12, mounting column; 13, planetary carrier; 14, fixed nut; 15, square groove; 16, clamping groove; 17, sun gear connecting mechanism; 18, bearing. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme of the utility model carry out clearly, completely describe, and the advantage is more clear and clear, the following combining with the drawing to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, instead of all the embodiments, only to explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without doing the premise of creative work, belong to the scope of protection of the utility model.

[0024] Embodiment one

[0025] Please refer to Figures 1 to 6 The utility model provides a kind of technical scheme: a high-precision three-stage planetary gear, including planetary carrier 13, clamping groove 16 is set on planetary carrier 13, the sun gear connecting mechanism 17 is provided on the planetary carrier 13, and bearing 18 is provided on the sun gear connecting mechanism 17;Second shell 2, second shell 2 is provided with mounting plate 11, and mounting column 12 provided on mounting plate 11 can be clamped into the positioning hole 10 that the fixed plate 9 set on the side of first shell 1 or third shell 3 is set with and is connected with fixed nut 14, and pressing block 4 is set on the side of third shell 3, second shell 2 and first shell 1;

[0026] Specific use, the planetary pinion that the planetary carrier 13 in the device is rotatably connected is engaged with the sun gear of another sun gear connecting mechanism 17, and the planetary pinion that the planetary carrier 13 is rotatably connected is engaged with the tooth slot set on the inner side of third shell 3, second shell 2 and first shell 1, when needing to disassemble the device, by screwing and taking down fixed bolt 8, the locking of the device is released, and third shell 3, second shell 2 and first shell 1 can be disassembled, and staff can maintain the planetary pinion of the planetary carrier 13 and the sun gear of sun gear connecting mechanism 17, to facilitate actual use of personnel.

[0027] Embodiment two

[0028] On the basis of embodiment one, in order to facilitate personnel later maintenance, a first shell 1 is arranged, the first shell 1 is installed on the second shell 2, bearings 18 are fixedly installed in the second shell 2, the third shell 3 and the first shell 1, the bearings 18 are fixedly installed on the sun gear connecting mechanism 17, the sun gear connecting mechanism 17 is fixedly connected with the planet carrier 13 at the other end, so that the planet carrier 13 can rotate;

[0029] The mounting plate 11 is in a square plate structure, the mounting plate 11 is fixedly connected with the side of the second shell 2, the planet carrier 13 is arranged in the second shell 2, the planet carrier 13 is fixedly connected with the sun gear connecting mechanism 17, the sun gear connecting mechanism 17 is a combination of a small diameter cylinder and a large diameter circular plate, the first shell 1, the second shell 2 and the third shell 3 are fixedly installed with the bearings 18, and the bearings 18 are fixedly installed with the sun gear connecting mechanism 17, the mounting plate 11 is fixedly connected with the mounting column 12, the mounting column 12 is in a cylindrical structure, a thread is formed on one end of the mounting column 12, the mounting column 12 can be screwed with the fixed nut 14 through the positioning hole 10 formed in the fixed plate 9 fixedly connected with the side of the first shell 1 and the third shell 3, the staff can remove the fixed nut 14 by screwing, so as to release the locking between the devices, pull the third shell 3 and the first shell 1, so that the mounting column 12 fixedly connected with the mounting plate 11 is separated from the positioning hole 10 formed in the fixed plate 9, and the second shell 2, the third shell 3 and the first shell 1 are separated, so that the staff can maintain and repair the planet pinion and the sun gear on each structure, which is convenient for actual use.

[0030] Embodiment three

[0031] On the basis of embodiment two, in order to facilitate personnel subsequent installation, a limiting groove 5 is formed in the pressing block 4, the limiting groove 5 is in a "convex" groove structure, a limiting block 7 is arranged in the limiting groove 5, the limiting block 7 is in a "convex" plate structure, the limiting block 7 is fixedly connected with the fixed block 6, the fixed block 6 is screwed with the pressing block 4 through the fixed bolt 8, after the maintenance is completed, the fixed bolt 8 on the fixed block 6 is screwed and removed, the pressing block 4 can be pressed to slide along the square groove 15;

[0032] The pressing block 4 is in an "L" shaped plate structure, one end of the pressing block 4 is clamped in the square groove 15 and can slide along the square groove 15 and be clamped into the clamping groove 16 formed in the planet carrier 13, the clamping groove 16 is in a square groove structure, after the maintenance is completed, the clamping groove 16 formed in the planet carrier 13 is aligned with the square groove 15 by rotating the planet carrier 13;

[0033] The third shell 3 is installed on the second shell 2, the second shell 2, the third shell 3 and the first shell 1 are all provided with square grooves 15, the square grooves 15 are in square groove structure, meanwhile, the staff presses the pressing block 4 to make it slide along the square groove 15 and make it clamped into the clamping groove 16 on the planet carrier 13, the planet carrier 13 is limited, through the above operation of the second shell 2, the third shell 3 and the first shell 1, the planet carrier 13 is calibrated and fixed, through the specific design, when the planet carrier 13 on the second shell 2, the third shell 3 and the first shell 1 are all flush, the planet pinion on the device can be engaged with the sun gear, the third shell 3 and the first shell 1 can be installed on the second shell 2, through the limiting of the pressing block 4 to the planet carrier 13, the personnel can be installed conveniently, and the personnel can be used conveniently.

[0034] Working principle: when actually used, the device is divided into three parts, each part is provided with a planet pinion and a sun gear, which is driven to form a three-stage planetary gear, when the device is maintained, the fixing bolt 8 is screwed and removed to release the locking of the device, the device can be divided into three parts, the staff can maintain the sun gear on the planet pinion and sun gear connecting mechanism 17 on the planet carrier 13 of each part, the operation is simple, and the personnel can maintain conveniently.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision three-stage planetary gear, comprising a planetary gear carrier (13), wherein the planetary gear carrier (13) has a slot (16), characterized in that: The planetary gear carrier (13) is provided with a sun gear connecting mechanism (17), and the sun gear connecting mechanism (17) is provided with a bearing (18); The second outer shell (2) is provided with a mounting plate (11). The mounting post (12) provided on the mounting plate (11) can be inserted into the positioning hole (10) on the fixing plate (9) provided on the side of the first outer shell (1) or the third outer shell (3) and connected with the fixing nut (14). The third outer shell (3), the second outer shell (2) and the first outer shell (1) are provided with pressing blocks (4).

2. The high-precision three-stage planetary gear according to claim 1, characterized in that: The pressing block (4) has an "L" shaped plate structure. One end of the pressing block (4) is stuck in the square groove (15) and can slide along the square groove (15) into the slot (16) opened on the planetary gear carrier (13). The slot (16) has a square groove structure.

3. A high-precision three-stage planetary gear according to claim 1, characterized in that: The third outer shell (3) is installed on the second outer shell (2). The second outer shell (2), the third outer shell (3) and the first outer shell (1) are all provided with square grooves (15) on their sides. The square grooves (15) are square groove structures.

4. A high-precision three-stage planetary gear according to claim 1, characterized in that: The mounting plate (11) has a square plate structure. The mounting plate (11) is fixedly connected to the side of the second outer shell (2). The second outer shell (2) is provided with a planetary gear carrier (13). The planetary gear carrier (13) is fixedly connected to the sun gear connection mechanism (17). The sun gear connection mechanism (17) is a combination of a cylinder with a small diameter and a sun gear fixedly installed at the other end and a circular plate with a large diameter.

5. A high-precision three-stage planetary gear according to claim 1, characterized in that: The first outer shell (1) is mounted on the second outer shell (2). Bearings (18) are fixedly installed inside the second outer shell (2), the third outer shell (3) and the first outer shell (1). The bearings (18) are fixedly installed on the sun gear connecting mechanism (17).

6. A high-precision three-stage planetary gear according to claim 1, characterized in that: The pressing block (4) has a limiting groove (5) with a "convex" groove structure. A limiting block (7) is provided in the limiting groove (5) with a "convex" plate structure. The limiting block (7) is fixedly connected to the fixing block (6). The fixing block (6) is threadedly connected to the pressing block (4) by a fixing bolt (8).

7. A high-precision three-stage planetary gear according to claim 1, characterized in that: The mounting plate (11) is fixedly connected to a mounting post (12). The mounting post (12) has a cylindrical structure and a thread on one end. The mounting post (12) can pass through the positioning hole (10) on the fixing plate (9) fixedly connected to the side of the first outer shell (1) and the third outer shell (3) and be threaded to the fixing nut (14).

Images