Planet gear speed reducer convenient to disassemble

Abstract

The utility model relates to the technical field of planet gear speed reducers, in particular to a planet gear speed reducer convenient to disassemble, which comprises a shell, an input shaft, an output shaft, an outer gear ring, a sun gear, a first planet carrier, a planet gear and a second planet carrier, a plurality of support columns are fixedly mounted on the first planet carrier, a plurality of round holes are formed in the second planet carrier, and the outer gear ring is sleeved on the outer gear ring. Mounting grooves are formed in one ends of the multiple supporting columns, two rectangular holes are formed in the side faces of the supporting columns, supporting rods are arranged in the two rectangular holes, strip-shaped holes are formed in the supporting rods, fixing shafts are slidably inserted in the strip-shaped holes, the fixing shafts are fixedly mounted in the rectangular holes, and the supporting rods are fixedly mounted in the strip-shaped holes. A transmission assembly used for driving the two supporting rods to move is arranged in the mounting groove. Through mutual cooperation of the first planet carrier, the second planet carrier, the supporting column, the transmission assembly, the supporting rod and the fixing shaft, the planet gear can be conveniently and rapidly installed in the shell, installation and detachment are convenient, and replacement is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear reducers, in particular to a planetary gear reducer which is easy to disassemble. Background Art

[0002] Planetary reducer is a kind of gear reducer. It can be mainly used to reduce the speed, increase the torque and reduce the rotational inertia ratio of the load motor under the premise of ensuring precise transmission. Compared with ordinary gear reducers, the structure of planetary reducer is more compact and reasonable, and it makes full use of all parts to work for reduction transmission.

[0003] The existing planetary reducers have low operating noise, small overall size, and are convenient for use in various working environments. However, the planetary gears inside the existing planetary reducers are mostly fixedly installed, and the replacement and disassembly of the planetary gears are not convenient. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the planetary gears inside the existing planetary reducers are mostly fixedly installed, and the replacement and disassembly of the planetary gears are not convenient enough, and a planetary gear reducer that is easy to disassemble is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A planetary gear reducer that is easy to disassemble, comprising a housing, an input shaft and an output shaft, wherein an outer gear ring is fixedly installed in the housing, a sun gear is fixedly installed at one end of the input shaft, a first planet carrier is fixedly installed at one end of the output shaft, a plurality of support columns are fixedly installed on the first planet carrier, a plurality of support columns are rotatably sleeved with planetary gears, a plurality of the planetary gears are meshedly connected with the outer gear ring, and the sun gear is meshedly connected with a plurality of planetary gears;

[0007] A second planetary carrier is rotatably sleeved on the input shaft, a plurality of circular holes are provided on the second planetary carrier, a plurality of support columns are respectively inserted in the plurality of circular holes, a mounting groove is provided at one end of the plurality of support columns, two rectangular holes are provided on the side of the support columns, both of which are connected with the mounting grooves, a support rod is provided in each of the two rectangular holes, a strip hole is provided on each of the two support rods, a fixed shaft is inserted in each of the two strip holes, the two fixed shafts are respectively fixedly installed in the two rectangular holes, and a transmission component for driving the two support rods to move is provided in the mounting groove.

[0008] Preferably, the transmission assembly includes a first threaded rod rotatably installed in the installation groove, a moving block threadedly sleeved on the first threaded rod and an adjusting block fixedly installed at one end of the first threaded rod, and one end of the two support rods are respectively rotatably connected to the two side surfaces of the moving block.

[0009] Preferably, annular grooves are provided on both side surfaces of the outer gear ring, and sealing rings are fixedly mounted on the first planet carrier and the second planet carrier, with one end of the sealing ring inserted into the annular groove.

[0010] Preferably, an injection hole is provided on the second planetary carrier, a connecting pipe is fixedly installed in the injection hole, an oil storage cylinder is fixedly installed at one end of the connecting pipe, a through hole connected to the connecting pipe is provided on the inner wall of the oil storage cylinder, an injection pipe is fixedly installed on the oil storage cylinder, a push plate is slidably installed in the oil storage cylinder, and a pushing assembly for pushing the push plate is provided on the oil storage cylinder.

[0011] Preferably, the pushing assembly includes a mounting frame fixedly mounted on one end of the oil storage cylinder, a second threaded rod, a friction wheel fixedly mounted on one end of the second threaded rod, and an arc-shaped block fixedly mounted in the shell, a threaded hole is opened on the mounting frame, the second threaded rod is threadedly inserted in the threaded hole, and the friction wheel is in intermittent rolling contact with the arc-shaped block.

[0012] Preferably, a sealing gasket is fixedly installed on the surface of the push plate, and the sealing gasket is made of rubber.

[0013] In the utility model, the beneficial effects are:

[0014] 1. Through the cooperation of the first planet carrier, the second planet carrier, the support column, the transmission assembly, the support rod and the fixed shaft, the planetary gear is conveniently installed in the housing, and the installation and disassembly are convenient, and the replacement is convenient;

[0015] 2. When the planetary gear reducer is in use, lubricating oil will be continuously squeezed into the space between the two planetary carriers. The lubricating oil can effectively reduce the wear between the gears and increase the service life of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a planetary gear reducer that is easy to disassemble proposed by the utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the internal parts of the housing of a planetary gear reducer that is easy to disassemble proposed by the utility model;

[0018] Figure 3 This is a three-dimensional exploded structural diagram of the internal parts of the housing of a planetary gear reducer that is easy to disassemble proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of a three-dimensional partial cross-sectional structure of an oil storage cylinder in a planetary gear reducer that is easy to disassemble proposed by the utility model;

[0020] Figure 5 for Figure 2 A magnified view of the structure in the middle.

[0021] In the figure: 1 housing, 2 input shaft, 3 output shaft, 4 outer ring gear, 5 sun gear, 6 first planetary carrier, 7 support column, 8 planetary gear, 9 second planetary carrier, 10 support rod, 11 fixed shaft, 12 first threaded rod, 13 moving block, 14 adjusting block, 15 sealing ring, 16 oil storage cylinder, 17 injection pipe, 18 push plate, 19 mounting frame, 20 second threaded rod, 21 friction wheel, 22 arc-shaped block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 5 , a planetary gear reducer that is easy to disassemble, including a housing 1, an input shaft 2 and an output shaft 3, an outer ring gear 4 is fixedly installed in the housing 1, a sun gear 5 is fixedly installed at one end of the input shaft 2, a first planet carrier 6 is fixedly installed at one end of the output shaft 3, a plurality of support columns 7 are fixedly installed on the first planet carrier 6, and a plurality of support columns 7 are rotatably sleeved with planetary gears 8, the plurality of planetary gears 8 are meshed and connected with the outer ring gear 4, and the sun gear 5 is meshed and connected with the plurality of planetary gears 8;

[0024] A second planetary carrier 9 is rotatably sleeved on the input shaft 2, and a plurality of circular holes are provided on the second planetary carrier 9. A plurality of support columns 7 are respectively inserted in the plurality of circular holes, and a mounting groove is provided at one end of the plurality of support columns 7. Two rectangular holes are provided on the side of the support column 7, both of which are connected to the mounting groove. A support rod 10 is provided in the two rectangular holes, and a strip hole is provided on the two support rods 10. A fixed shaft 11 is inserted in the two strip holes, and the two fixed shafts 11 are respectively fixedly installed in the two rectangular holes. A transmission assembly for driving the two support rods 10 to move is provided in the mounting groove, and the transmission assembly includes a first threaded rod 12 rotatably installed in the mounting groove, a moving block 13 threadedly sleeved on the first threaded rod 12, and an adjusting block 14 fixedly installed at one end of the first threaded rod 12, and one end of the two support rods 10 is rotatably connected to the two side surfaces of the moving block 13 respectively.

[0025] The planetary gears 8 are installed in the housing 1, and the multiple planetary gears 8 are respectively sleeved on the multiple support columns 7, and then one end of the multiple support columns 7 is respectively inserted into the multiple circular holes opened on the second planet carrier 9, so that the multiple planetary gears 8 are installed between the first planet carrier 6 and the second planet carrier 9, and are located in the outer gear ring 4, and the sun gear 5 fixedly installed on one end of the input shaft 2 is located between the multiple planetary gears 8, and they are meshed and connected with each other, and one end of the two support rods 10 on the support column 7 is in contact with the second planet carrier 9, so that the second planet carrier 9 is limited on the multiple support columns 7;

[0026] When the planetary gear 8 needs to be replaced and disassembled, first rotate the adjusting block 14 to drive the first threaded rod 12 to rotate. Under the action of the first threaded rod 12, the moving block 13 is driven close to the adjusting block 14. During the movement of the moving block 13, the two support rods 10 will be pulled to separate from the second planetary carrier 9. At the same time, with the cooperation of the fixed shaft 11 and the strip hole, the support rod 10 is retracted into the rectangular hole. At this time, the second planetary carrier 9 can be removed from the multiple support columns 7, and then the first planetary carrier 6 is moved, and the planetary gears 8 on the support columns 7 are taken out of the outer gear ring 4 through the multiple support columns 7, and then the planetary gears 8 that need to be replaced are installed on the support columns 7. The installation and disassembly are convenient, and it is easy to replace.

[0027] Annular grooves are provided on both sides of the outer gear ring 4, and sealing rings 15 are fixedly installed on the first planetary carrier 6 and the second planetary carrier 9. One end of the sealing ring 15 is inserted in the annular groove. When the first planetary carrier 6 and the second planetary carrier 9 rotate on the outer gear ring 4, the sealing ring 15 will be driven to rotate in the annular groove. The planetary gear 8 is installed in a sealed space through the second planetary carrier 9, the first planetary carrier 6, the sealing ring 15 and the outer gear ring 4 to prevent dust from entering the reducer and affecting the transmission between the gears.

[0028] An injection hole is provided on the second planetary carrier 9, a connecting pipe is fixedly installed in the injection hole, an oil storage cylinder 16 is fixedly installed at one end of the connecting pipe, a through hole connected to the connecting pipe is provided on the inner wall of the oil storage cylinder 16, an injection pipe 17 is fixedly installed on the oil storage cylinder 16, a push plate 18 is slidably installed in the oil storage cylinder 16, and a pushing assembly for pushing the push plate 18 is provided on the oil storage cylinder 16, the pushing assembly includes a mounting frame 19 fixedly installed at one end of the oil storage cylinder 16, a second threaded rod 20, a friction wheel 21 fixedly installed at one end of the second threaded rod 20, and an arc-shaped block 22 fixedly installed in the housing 1, a threaded hole is provided on the mounting frame 19, the second threaded rod 20 is threadedly inserted in the threaded hole, and the friction wheel 21 is in intermittent rolling contact with the arc-shaped block 22;

[0029] When the second planetary carrier 9 rotates in the housing 1, it will drive the friction wheel 21 to intermittently contact the arc block 22, and under the restriction of the arc block 22, it will drive the friction wheel 21 to rotate, thereby driving the second threaded rod 20 to rotate. Under the action of the mounting frame 19, the second threaded rod 20 will move toward the push plate 18 and push the push plate 18 to move in the oil storage cylinder 16, squeezing the lubricating oil in the oil storage cylinder 16 between the first planetary carrier 6 and the second planetary carrier 9, thereby lubricating the multiple planetary gears 8, effectively reducing the wear between the gears and increasing the service life of the reducer.

[0030] A sealing gasket is fixedly installed on the surface of the push plate 18. The sealing gasket is made of rubber material. The sealing gasket can increase the sealing between the push plate 18 and the oil storage cylinder 16 to prevent the lubricating oil in the oil storage cylinder 16 from overflowing.

[0031] In the utility model, when the planetary gear 8 needs to be replaced and disassembled, the two support rods 10 are pulled apart from the second planetary carrier 9 through the transmission assembly. At the same time, with the cooperation of the fixed shaft 11 and the strip hole, the support rods 10 are retracted into the rectangular hole. At this time, the second planetary carrier 9 can be disassembled from the multiple support columns 7, and then the first planetary carrier 6 is moved, and the planetary gears 8 on the support columns 7 are taken out from the outer gear ring 4 through the multiple support columns 7, and then the planetary gears 8 that need to be replaced are installed on the support columns 7. The installation and disassembly are convenient, and it is easy to replace.

[0032] In general, with respect to the technical problem: the planetary gears 8 inside the existing planetary reducers are mostly fixedly installed, and the replacement and disassembly of the planetary gears 8 are not convenient enough; a technical solution is adopted: through the mutual cooperation of the first planetary carrier 6, the second planetary carrier 9, the support column 7, the transmission assembly, the strut 10 and the fixed shaft 11, the planetary gears 8 are conveniently installed in the housing 1; because the implementation process of the technical solution is: when the planetary gears 8 need to be replaced and disassembled, the two struts 10 are pulled apart from the second planetary carrier 9 by the transmission assembly, and at the same time, with the cooperation of the fixed shaft 11 and the strip hole, the strut 10 is retracted into the rectangular hole, at this time, the second planetary carrier 9 can be disassembled from the multiple support columns 7, and then the first planetary carrier 6 is moved, and the planetary gears 8 on the support columns 7 are taken out from the outer gear ring 4 through the multiple support columns 7, and then the planetary gears 8 to be replaced are installed on the support columns 7; so the technical problem can definitely be solved, and the technical effect achieved is: convenient installation and disassembly, and easy replacement.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A planetary gear reducer that is easy to disassemble, comprising a housing (1), an input shaft (2) and an output shaft (3), characterized in that: An outer gear ring (4) is fixedly mounted in the housing (1), a sun gear (5) is fixedly mounted on one end of the input shaft (2), a first planet carrier (6) is fixedly mounted on one end of the output shaft (3), a plurality of support columns (7) are fixedly mounted on the first planet carrier (6), a plurality of support columns (7) are rotatably sleeved with planetary gears (8), a plurality of the planetary gears (8) are meshedly connected with the outer gear ring (4), and the sun gear (5) is meshedly connected with a plurality of the planetary gears (8); A second planetary carrier (9) is rotatably sleeved on the input shaft (2), a plurality of circular holes are provided on the second planetary carrier (9), a plurality of support columns (7) are respectively inserted into the plurality of circular holes, a mounting groove is provided at one end of each of the support columns (7), two rectangular holes are provided on the side of the support column (7) and both are connected to the mounting grooves, a support rod (10) is provided in each of the two rectangular holes, a strip hole is provided on each of the two support rods (10), a fixed shaft (11) is inserted in each of the two strip holes, the two fixed shafts (11) are respectively fixedly installed in the two rectangular holes, and a transmission component for driving the two support rods (10) to move is provided in the mounting groove.

2. The easily disassembled planetary gear reducer according to claim 1, characterized in that: The transmission assembly comprises a first threaded rod (12) rotatably mounted in a mounting groove, a moving block (13) threadedly sleeved on the first threaded rod (12), and an adjusting block (14) fixedly mounted on one end of the first threaded rod (12), and one end of the two support rods (10) are rotatably connected to two side surfaces of the moving block (13) respectively.

3. The easily disassembled planetary gear reducer according to claim 1, characterized in that: Annular grooves are provided on both sides of the outer gear ring (4), and sealing rings (15) are fixedly mounted on the first planet carrier (6) and the second planet carrier (9), with one end of the sealing ring (15) inserted into the annular groove.

4. The easily disassembled planetary gear reducer according to claim 1, characterized in that: The second planet carrier (9) is provided with an injection hole, a connecting pipe is fixedly installed in the injection hole, an oil storage cylinder (16) is fixedly installed at one end of the connecting pipe, a through hole connected to the connecting pipe is provided on the inner wall of the oil storage cylinder (16), an injection pipe (17) is fixedly installed on the oil storage cylinder (16), a push plate (18) is slidably installed in the oil storage cylinder (16), and a pushing component for pushing the push plate (18) is provided on the oil storage cylinder (16).

5. The easily disassembled planetary gear reducer according to claim 4, characterized in that: The pushing assembly comprises a mounting frame (19) fixedly mounted on one end of the oil storage cylinder (16), a second threaded rod (20), a friction wheel (21) fixedly mounted on one end of the second threaded rod (20), and an arc-shaped blocking block (22) fixedly mounted in the housing (1); a threaded hole is provided on the mounting frame (19), the second threaded rod (20) is threadedly inserted in the threaded hole, and the friction wheel (21) is in intermittent rolling contact with the arc-shaped blocking block (22).

6. The easily disassembled planetary gear reducer according to claim 4, characterized in that: A sealing gasket is fixedly mounted on the surface of the push plate (18), and the sealing gasket is made of rubber material.

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