Planetary gear assembly for speed reducer

Abstract

The utility model relates to the technical field of planetary gears, and discloses a planetary gear assembly for a speed reducer, which comprises a first disc and a second disc, an output shaft is fixedly mounted at the bottom of the second disc, three support plates are fixedly mounted at the top of the first disc, an input mechanism is arranged in the second disc, and the output shaft is fixedly mounted at the bottom of the second disc. An output mechanism is arranged outside the second disc, three insertion columns are separated from arc-shaped insertion blocks, so that the arc-shaped insertion blocks can be separated from the first disc, the first disc and the second disc can be separated, three planet wheels are exposed for maintenance and replacement, and more maintenance time is saved; the sun wheel is meshed with the three planet wheels, and the planet wheels rotate to be meshed with the gear sleeve, so that the planet wheels are meshed with the gear sleeve while rotating around the rotating shaft, the second disc is driven to rotate, the output shaft rotates, and the working process is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gears, in particular to a planetary gear assembly for a reducer. Background Art

[0002] Planetary gears refer to a gear system that, in addition to being able to rotate around its own axis like fixed-axis gears, also has its axis rotate around the axis of other gears along with the planet carrier. A planetary gear reducer is a type of reducer, which requires a planetary gear assembly for the reducer.

[0003] According to the description of the enclosed planetary gear structure for reducer disclosed in the patent website (authorization announcement number: CN209164496U), "The utility model discloses a enclosed planetary gear structure for reducer, which relates to reducer and aims to solve the problem of unstable installation of planetary gears. The key points of its technical solution are: a enclosed planetary gear structure for reducer, including an output shaft, a planetary disc, a planetary gear, a sun gear, a gear ring and an input shaft, the planetary disc includes a first disc and a second disc arranged opposite to each other, three arc guard plates are arranged between the first disc and the second disc, the number of planetary gears is three, and each planetary gear is installed between the two arc guard plates respectively, the output shaft is fixed coaxially with the first disc, the center of the second disc is penetrated by a through hole, and the sun gear is installed in the planetary disc through the through hole. The enclosed planetary gear structure for reducer of the utility model adopts a enclosed planetary disc, so that both ends of the axial direction of the planetary gear are simultaneously connected to the planetary disc for rotation, thereby improving the installation stability of the planetary gear.".

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During use, the utility model reduces the noise generated by the reducer by installing the planetary gears and the sun gear in the noise reduction space formed by the first disc, the second disc and the arc guard plate. However, in actual use, the three planetary gears are arranged in the space formed by the first disc, the second disc and the arc guard plate. When performing maintenance and disassembly, the first disc and the second disc need to be disassembled, and the conventional installation of the two requires multiple bolts to fix them. The disassembly process is relatively cumbersome. Therefore, it is necessary to improve a planetary gear assembly for the reducer to solve the above problem. Utility Model Content

[0006] The purpose of the utility model is to provide a planetary gear assembly for a speed reducer to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present utility model provides the following technical solution: A planetary gear assembly for a speed reducer, comprising a first disk and a second disk. An output shaft is fixedly installed at the bottom of the second disk. Three support plates are fixedly installed at the top of the first disk. An input mechanism is arranged inside the second disk, and an output mechanism is arranged outside the second disk.

[0008] The input mechanism includes a transmission assembly and a mounting assembly. The transmission assembly is arranged inside the first disk, and the mounting assembly is arranged inside the first disk.

[0009] Preferably, the transmission assembly includes three rotating shafts. All three rotating shafts are rotatably installed inside the second disk. Needle roller bearings are arranged outside all three rotating shafts. Planetary gears are arranged outside the needle roller bearings. A sun gear is arranged inside the three planetary gears. An input shaft is fixedly installed at the top of the sun gear to provide power.

[0010] Preferably, the sun gear meshes with all three planetary gears. The support plate is inlaid and fitted with the shell of the speed reducer. A placement groove is opened inside the first disk. All three rotating shafts are rotatably installed inside the first disk. The planetary gears are arranged between the first disk and the second disk, having a certain sound insulation effect and making less noise during use.

[0011] Preferably, the mounting assembly includes a turntable. The turntable is rotatably installed inside the second disk. A control block is fixedly installed at the bottom of the turntable. A bolt is threadedly installed inside the control block. Three arc-shaped insertion blocks are fixedly installed at the bottom of the first disk. Three sliders are slidably installed inside the second disk. Moving columns are fixedly installed at the bottom of all three sliders. Insertion columns are fixedly installed on one side of all three sliders close to the arc-shaped insertion blocks, so that they are inserted into the first disk with the arc-shaped insertion blocks.

[0012] Preferably, insertion holes are opened at corresponding positions of the arc-shaped insertion blocks and the insertion columns, and the insertion columns are inserted inside the insertion holes. The arc-shaped insertion blocks are slidably installed inside the second disk. Movement grooves are opened at corresponding positions of the turntable and the moving columns, and the moving columns are movably installed inside the movement grooves. The control block is movably installed inside the second disk. The bolt is threadedly installed inside the second disk, so that after the moving columns are inserted into the movement grooves, their positions are fixed, completing the installation of the first disk, the second disk and the arc-shaped insertion blocks.

[0013] Preferably, the output mechanism includes an outer ring. The outer ring is arranged outside the first disk and the second disk. A mounting ring is fixedly installed at the top of the outer ring. A threaded hole is opened inside the mounting ring. A tooth sleeve is fixedly installed inside the outer ring, which meshes with the planetary gears.

[0014] Preferably, the gear sleeve meshes with three planet gears, and the input mechanism is arranged inside the outer ring for assembly.

[0015] Compared with the prior art, the present utility model provides a planetary gear assembly for a speed reducer, having the following beneficial effects:

[0016] 1. For the planetary gear assembly for a speed reducer, through the arranged input mechanism, during use, by the three plug posts disengaging from the arc-shaped plug blocks, the arc-shaped plug blocks can be disengaged from inside the first disc, enabling the first disc and the second disc to be separated, and the three planet gears to be exposed for maintenance and replacement, thus saving more maintenance time.

[0017] 2. For the planetary gear assembly for a speed reducer, through the arranged output mechanism, during use, the sun gear meshes with the three planet gears, and the planet gears rotate and mesh with the gear sleeve, causing the planet gears to rotate around the rotating shaft and mesh with the gear sleeve simultaneously, driving the second disc to rotate and the output shaft to rotate, thus completing the work process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0019] Figure 1 is a schematic diagram of the external structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the disassembled structure of the present utility model;

[0021] Figure 3 is a schematic diagram of the disassembled sectional structure of the input mechanism of the present utility model;

[0022] Figure 4 is a schematic diagram of the disassembled structure of the turntable and its connected mechanism of the present utility model;

[0023] Figure 5 is a schematic diagram of the disassembled structure of the output mechanism of the present utility model.

[0024] In the figure: 1. First disk; 2. Second disk; 3. Output shaft; 4. Support plate; 5. Input mechanism; 51. Transmission component; 511. Rotating shaft; 512. Needle roller bearing; 513. Planet gear; 514. Sun gear; 515. Input shaft; 52. Mounting component; 521. Turntable; 522. Control block; 523. Bolt; 524. Arc-shaped insert block; 525. Slide block; 526. Movable column; 527. Insert post; 6. Output mechanism; 61. Outer ring; 62. Mounting ring; 63. Threaded hole; 64. Gear sleeve. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Embodiment 1:

[0028] Please refer to Figures 1-4 , the present invention provides a technical solution: a planetary gear assembly for a speed reducer, including a first disk 1 and a second disk 2. An output shaft 3 is fixedly installed at the bottom of the second disk 2. Three support plates 4 are fixedly installed at the top of the first disk 1. An input mechanism 5 is arranged inside the second disk 2, and an output mechanism 6 is arranged outside the second disk 2.

[0029] The input mechanism 5 includes a transmission component 51 and a mounting component 52. The transmission component 51 is arranged inside the first disk 1, and the mounting component 52 is arranged inside the first disk 1.

[0030] Further, the transmission assembly 51 includes three rotating shafts 511. All three rotating shafts 511 are rotatably installed inside the second disc 2. Needle roller bearings 512 are arranged on the outer parts of the three rotating shafts 511. Planetary gears 513 are arranged on the outer parts of the needle roller bearings 512. A sun gear 514 is arranged on the inner sides of the three planetary gears 513. An input shaft 515 is fixedly installed at the top of the sun gear 514 to provide power.

[0031] Further, the sun gear 514 meshes with all three planetary gears 513. The support plate 4 is embedded and fitted with the shell of the speed reducer. A placement groove is formed inside the first disc 1. All three rotating shafts 511 are rotatably installed inside the first disc 1. The planetary gears 513 are arranged between the first disc 1 and the second disc 2, which has a certain sound insulation effect and produces less noise during use.

[0032] Further, the installation assembly 52 includes a turntable 521. The turntable 521 is rotatably installed inside the second disc 2. A control block 522 is fixedly installed at the bottom of the turntable 521. A bolt 523 is installed inside the control block 522 in a threaded manner. Three arc-shaped insertion blocks 524 are fixedly installed at the bottom of the first disc 1. Three sliders 525 are slidably installed inside the second disc 2. Moving columns 526 are fixedly installed at the bottoms of the three sliders 525. Insertion columns 527 are fixedly installed on one sides of the three sliders 525 close to the arc-shaped insertion blocks 524, so that they are inserted into the first disc 1 together with the arc-shaped insertion blocks 524.

[0033] Further, insertion holes are formed at the corresponding positions of the arc-shaped insertion blocks 524 and the insertion columns 527, and the insertion columns 527 are inserted into the insertion holes. The arc-shaped insertion blocks 524 are slidably installed inside the second disc 2. Moving grooves are formed at the corresponding positions of the turntable 521 and the moving columns 526, and the moving columns 526 are movably installed inside the moving grooves. The control block 522 is movably installed inside the second disc 2. The bolt 523 is installed inside the second disc 2 in a threaded manner, so that the moving columns 526 are fixed in position after being inserted into the moving grooves, and the installation of the first disc 1, the second disc 2 and the arc-shaped insertion blocks 524 is completed.

[0034] Embodiment 2:

[0035] Please refer to Figure 5 , and in combination with Embodiment 1, it is further obtained that the output mechanism 6 includes an outer ring 61. The outer ring 61 is arranged outside the first disc 1 and the second disc 2. An installation ring 62 is fixedly installed at the top of the outer ring 61. A threaded hole 63 is formed inside the installation ring 62. A tooth sleeve 64 is fixedly installed on the inner side of the outer ring 61 and meshes with the planetary gear 513.

[0036] Further, the tooth sleeve 64 meshes with all three planetary gears 513. The input mechanism 5 is arranged inside the outer ring 61 for assembly.

[0037] In the actual operation process, when this device is in use, there are three arc-shaped inserts 524 arranged between the first disc 1 and the second disc 2. There is a gap between every two arc-shaped inserts 524, and a planetary gear 513 is arranged at the gap. The first disc 1, the second disc 2 and the arc-shaped inserts 524 form a receiving cavity, which has a certain sound insulation effect and produces less noise during use. When the device has problems and needs to be repaired, turn the bolt 523 to disengage from the inside of the second disc 2, and rotate the control block 522 to move inside the second disc 2, so that the turntable 521 rotates, driving the three movable columns 526 to move, so that the three sliders 525 move linearly under the action of the limit groove inside the second disc 2, so that the three insertion posts 527 disengage from the inside of the arc-shaped inserts 524, so that the arc-shaped inserts 524 disengage from the inside of the first disc 1, so that the first disc 1 and the second disc 2 can be separated, so that the three planetary gears 513 are exposed, and the three planetary gears 513 are repaired and replaced. The installation and disassembly of the first disc 1 and the second disc 2 are more convenient and save more maintenance time. The input shaft 515 rotates to drive the sun gear 514 to rotate. The sun gear 514 rotates and meshes with the three planetary gears 513. The planetary gears 513 rotate and mesh with the gear sleeve 64, so that the planetary gears 513 rotate around the rotating shaft 511 and mesh with the gear sleeve 64 at the same time, driving the second disc 2 to rotate, so that the output shaft 3 rotates to complete the work process.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. A planetary gear assembly for a speed reducer, comprising a first disc (1) and a second disc (2), characterized in that: The bottom of the second disc (2) is fixedly installed with an output shaft (3). The top of the first disc (1) is fixedly installed with three support plates (4). An input mechanism (5) is arranged inside the second disc (2), and an output mechanism (6) is arranged outside the second disc (2). The input mechanism (5) includes a transmission component (51) and a mounting component (52). The transmission component (51) is arranged inside the first disc (1), and the mounting component (52) is arranged inside the first disc (1). The transmission component (51) includes three rotating shafts (511). The three rotating shafts (511) are all rotatably installed inside the second disc (2). Needle roller bearings (512) are arranged outside the three rotating shafts (511). Planet gears (513) are arranged outside the needle roller bearings (512). A sun gear (514) is arranged inside the three planet gears (513). The top of the sun gear (514) is fixedly installed with an input shaft (515). The mounting component (52) includes a turntable (521). The turntable (521) is rotatably installed inside the second disc (2). The bottom of the turntable (521) is fixedly installed with a control block (522). A bolt (523) is threadedly installed inside the control block (522). The bottom of the first disc (1) is fixedly installed with three arc-shaped insertion blocks (524). Three sliders (525) are slidably installed inside the second disc (2). Moving columns (526) are fixedly installed at the bottoms of the three sliders (525). Insertion columns (527) are fixedly installed on one side of the three sliders (525) close to the arc-shaped insertion blocks (524). The output mechanism (6) includes an outer ring (61). The outer ring (61) is arranged outside the first disc (1) and the second disc (2). The top of the outer ring (61) is fixedly installed with a mounting ring (62). A threaded hole (63) is opened inside the mounting ring (62). A gear sleeve (64) is fixedly installed inside the outer ring (61).

2. The planetary gear assembly for a speed reducer according to claim 1, characterized in that: The sun gear (514) meshes with the three planet gears (513). The support plate (4) is inlaid and fitted with the shell of the reducer. A placement groove is opened inside the first disc (1). The three rotating shafts (511) are all rotatably installed inside the first disc (1). The planet gears (513) are arranged between the first disc (1) and the second disc (2).

3. A planetary gear assembly for a speed reducer according to claim 1, characterized in that: The arc-shaped insertion blocks (524) and the insertion columns (527) are provided with insertion holes at corresponding positions, and the insertion columns (527) are inserted into the insertion holes. The arc-shaped insertion blocks (524) are slidably installed inside the second disc (2). Moving grooves are opened at corresponding positions of the turntable (521) and the moving columns (526), and the moving columns (526) are movably installed inside the moving grooves. The control block (522) is movably installed inside the second disc (2). The bolt (523) is threadedly installed inside the second disc (2).

4. A planetary gear assembly for a speed reducer according to claim 1, characterized in that: The gear sleeve (64) meshes with three planet gears (513), and the input mechanism (5) is arranged inside the outer ring (61).

Images