Self-rotation type gear planet carrier

Abstract

The utility model relates to the technical field of gear planet carriers, in particular to a self-rotation type gear planet carrier which comprises a planet carrier body, a plurality of shaft holes are formed in the surface of the planet carrier body, sliding bearing outer rings are movably connected in the shaft holes, and sliding bearing inner rings are movably connected to the surfaces of the sliding bearing outer rings. The surface of the sliding bearing inner ring is movably connected with a drilling disc, and a rod hole is formed in the surface of the sliding bearing inner ring. The bearing has the beneficial effects that the rod hole is formed in the surface of the bearing inner ring, the drilling disc is arranged in the bearing inner ring, the guide rod is arranged on the surface of the drilling disc, the jacking piece is arranged at the other end of the guide rod after the guide rod drills through the rod hole, the half-moon disc is clamped in the shaft hole through the jacking piece and the drilling disc, and the half-moon disc limits the planetary gear shaft through the flat key; therefore, installation of the planet gear shaft and the planet carrier is achieved, interference fit does not need to be adopted among all parts used for replacing the planet gear shaft, and replacement of the planet gear shaft is quite labor-saving.

Description

Technical Field

[0001] The utility model relates to the field of gear planet carriers, in particular to a self-rotating gear planet carrier. 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 planetary carrier. The planetary carrier is a bracket used to fix the planetary gears, and can be divided into self-rotating and revolving types according to the rotation of the planetary gears.

[0003] In the prior art, the planetary gear is installed on the planetary gear shaft, and the planetary gear shaft is connected to the planetary carrier. The connection method between the planetary gear shaft and the planetary carrier of the self-rotating planetary gear is generally to install the planetary gear shaft into the inner ring of the bearing through an interference fit, and then install the outer ring of the bearing into the shaft hole opened on the surface of the planetary carrier through an interference fit. This installation method has a simple structure.

[0004] However, the existing installation method between the planetary gear shaft and the planetary carrier makes it very laborious to disassemble and install the planetary gear shaft when the planetary gear shaft needs to be replaced. Utility Model Content

[0005] The purpose of the utility model is to provide a self-rotating gear planet carrier to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a self-rotating gear planetary carrier, comprising: a planetary carrier, characterized in that: a plurality of groups of axial holes are opened on the surface of the planetary carrier, a sliding bearing outer ring is movably connected in the axial hole, a sliding bearing inner ring is movably connected on the surface of the sliding bearing outer ring, a drilling disk is movably connected on the surface of the sliding bearing inner ring, a rod hole is opened on the surface of the sliding bearing inner ring, a guide rod is arranged on the surface of the drilling disk, the guide rod is movably inserted in the rod hole, a half-moon disk is connected on the surface of the drilling disk, a planetary gear shaft is connected on the surface of the half-moon disk, a planetary gear shaft is connected on the surface of the half-moon disk, a top holding piece is movably connected on the surface of the guide rod, the bottom end of the top holding piece is against the top end of the drilling disk, a planetary gear shaft keyway is opened on the surface of the planetary gear shaft, a half-moon disk key hole is opened on the surface of the half-moon disk, a drilling disk keyway is opened on the surface of the drilling disk, and a flat key is movably inserted in the planetary gear shaft keyway, the half-moon disk key hole and the drilling disk keyway at the same time.

[0007] Preferably, a spring plate is fixed to the top end of the guide rod, a spring is sleeved on the rod body of the guide rod, the top end of the spring abuts against the bottom end of the spring plate, and the bottom end of the spring abuts against the top end of the top holding sheet.

[0008] Preferably, a pull ring is fixed to the top end of the holding piece.

[0009] Preferably, the half-moon disk is in the form of a semicircular cylindrical structure.

[0010] Preferably, the drilling disk consists of two parts, namely a circular sheet structure at the bottom and a circular cylindrical structure at the top. The drilling disk keyway is opened on the inner ring of the circular main structure of the drilling disk, and the drilling disk keyway extends from the middle of the inner ring of the drilling disk to the top.

[0011] Preferably, a screw hole is provided at the bottom end of the planetary gear shaft, and a planetary gear connecting keyway is provided on the cylinder of the planetary gear shaft.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The gear planetary carrier with built-in self-rotating drilling disk proposed by the utility model has a rod hole on the surface of the inner ring of the bearing, a drilling disk is arranged inside the inner ring of the bearing, a guide rod is arranged on the surface of the drilling disk, and a top holding piece is arranged on the other end of the guide rod after drilling through the rod hole. The top holding piece and the drilling disk clamp the half-moon disk in the shaft hole, and the half-moon disk limits the planetary gear shaft by a flat key, thereby realizing the installation of the planetary gear shaft and the planetary carrier, and all the parts used for replacing the planetary gear shaft do not need to adopt interference fit, so that the replacement of the planetary gear shaft is very labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle.

[0017] In the figure: planet carrier 1, shaft hole 2, sliding bearing outer ring 3, sliding bearing inner ring 4, rod hole 5, guide rod 6, drilling disk 7, half-moon disk 8, planetary gear shaft keyway 9, half-moon disk keyhole 10, drilling disk keyway 11, flat key 12, top holding piece 13, spring 14, spring plate 15, pull ring 16, planetary gear shaft 17, planetary gear connecting keyway 18, screw hole 19. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment 1

[0020] See also Figure 1-Figure 3 The utility model provides a technical solution: a self-rotating gear planetary carrier, comprising: a planetary carrier 1, a plurality of shaft holes 2 are opened on the surface of the planetary carrier 1, a sliding bearing outer ring 3 is movably connected in the shaft hole 2, a sliding bearing inner ring 4 is movably connected on the surface of the sliding bearing outer ring 3, a drilling disk 7 is movably connected on the surface of the sliding bearing inner ring 4, a rod hole 5 is opened on the surface of the sliding bearing inner ring 4, a guide rod 6 is arranged on the surface of the drilling disk 7, the guide rod 6 is movably inserted in the rod hole 5, a half-moon disk 8 is connected on the surface of the drilling disk 7, a planetary gear shaft 17 is connected on the surface of the half-moon disk 8, a top holding piece 13 is movably connected on the surface of the guide rod 6, the bottom end of the top holding piece 13 is against the top of the drilling disk 7, and the planetary gear shaft 17 A planetary gear shaft keyway 9 is provided on the surface of the half-moon disk 8, a half-moon disk key hole 10 is provided on the surface of the drilling disk 7, a drilling disk keyway 11 is provided on the surface of the drilling disk 7, and a flat key 12 is movably inserted in the planetary gear shaft keyway 9, the half-moon disk key hole 10 and the drilling disk keyway 11 at the same time. The half-moon disk 8 has a semi-circular ring-shaped cylindrical structure, and the drilling disk 7 consists of two parts, namely, a circular ring-shaped sheet structure at the bottom and a circular ring-shaped cylindrical structure above. The drilling disk keyway 11 is provided on the inner ring of the circular ring-shaped main structure of the drilling disk 7, and the drilling disk keyway 11 extends from the middle part of the inner ring of the drilling disk 7 to the top, a screw hole 19 is provided at the bottom end of the planetary gear shaft 17, and a planetary gear connecting keyway 18 is provided on the cylinder of the planetary gear shaft 17.

[0021] In actual use, the planetary gear sleeve is arranged on the part of the planetary gear shaft 17 located at the bottom end of the planetary carrier 1, and the planetary gear connecting keyway 18 opened on the surface of the planetary gear shaft 17 and the keyway on the inner wall of the planetary gear are plugged with the same set of keys. The bottom end of the planetary gear shaft 17 is installed with a shaft head, and the shaft head is screwed into the screw hole 19 to connect with the planetary gear shaft 17. When the planetary gear shaft 17 is to be replaced for the planetary carrier 1, the screw in the screw hole 19 is first unscrewed to remove the shaft head, and the planetary gear and the key in the planetary gear connecting keyway 18 are removed, and then the pull ring 16 is pulled up, and the pull ring 16 drives the top holding piece 13 to move upward, and then the planetary carrier 1 is turned over, so that the planetary gear shaft 17 and the half-moon disk 8 can be pulled out from the inner wall of the drilling disk 7 together. The flat key 12 also slides out of the drilling disk keyway 11 along with the drilling disk 7 and the half-moon disk 8, and then the flat key 12 is pulled out from the planetary gear shaft keyway 9 and the half-moon disk key hole 10, and the half-moon disk 8 can be removed from the side from the gap between the top holding piece 13 and the drilling disk 7, and the planetary gear shaft 17 can be directly pulled out from the inner ring of the drilling disk 7 or the top holding piece 13, which completes the removal of the planetary gear shaft 17; when installing a new planetary gear shaft 17, the top holding piece 13 is still moved away from the drilling disk 7, and the new planetary gear shaft 17 is inserted into the inner ring of the drilling disk 7 and the top holding piece 13, and then the half-moon disk 8 is inserted into the gap between the top holding piece 13 and the drilling disk 7, so that the half-moon disk 8 is sleeved on the surface of the planetary gear shaft 17, and then the flat key 12 is inserted into the planetary gear shaft keyway 9 and the half-moon disk key hole 10, and then the flat key 12 is aligned with the drilling disk keyway 11, and then the height of the planetary gear shaft 17 is lowered. When the planetary gear shaft 17 is lowered, the flat key 12 drives the half-moon disk 8 to descend together, and the flat key 12 is inserted into the drilling disk keyway 11, and then the top holding piece 13 is lowered, and the bottom end of the top holding piece 13 is against the top of the half-moon disk 8, and the annular sheet structure of the drilling disk 7 is against the bottom end of the half-moon disk 8, so that the half-moon disk 8 is clamped between the drilling disk 7 and the top holding piece 13, and at the same time, a part of the flat key 12 is inserted into the half-moon disk key hole 10, and another part is inserted into the planetary gear shaft keyway 9 , so that the height of the planetary gear shaft 17 is consistent with that of the half-moon disk 8, so that the planetary gear shaft 17 is also fixed in the shaft hole 2, which completes the installation of the planetary gear shaft 17; when the planetary gear rotates, the planetary gear shaft 17 rotates with the planetary gear, and the flat key 12 makes the half-moon disk 8 and the drilling disk 7 rotate with the planetary gear shaft 17, and the guide rod 6 on the surface of the drilling disk 7 is inserted into the rod hole 5 so that the sliding bearing inner ring 4 rotates with the drilling disk 7, and the sliding bearing outer ring 3 is installed in the shaft hole 2 by interference fit, so that when the planetary gear drives the planetary gear shaft 17 to rotate, the friction force only exists between the sliding bearing outer ring 3 and the sliding bearing inner ring 4, thereby preventing the planetary gear shaft 17 from being worn.

[0022] Embodiment 2

[0023] On the basis of embodiment 1, in order to achieve that the top holding piece 13 is pressed against the top of the semi-circular disk 8, a spring plate 15 is fixed to the top of the guide rod 6, and a spring 14 is sleeved on the rod body of the guide rod 6. The top end of the spring 14 abuts against the bottom end of the spring plate 15, and the bottom end of the spring 14 abuts against the top of the top holding piece 13.

[0024] The spring 14 is always in a compressed state, and the top end of the spring 14 is against the bottom end of the spring plate 15, so the spring 14 always generates a thrust on the top holding piece 13 at the bottom, and the top holding piece 13 is pressed against the top end of the semi-moon disk 8 under this thrust.

[0025] Embodiment 3

[0026] On the basis of the second embodiment, in order to facilitate the pulling of the holding piece 13 , a pull ring 16 is fixed to the top end of the holding piece 13 .

[0027] The pull ring 16 is composed of a circular ring and two round rods. The round rods are fixed on the top holding piece 13 so that a certain height is formed between the circular ring of the pull ring 16 and the top holding piece 13. The hand can be buckled into the bottom end of the circular ring of the pull ring 16 to pull the pull ring 16 upward, and then the pull ring 16 drives the top holding piece 13, which facilitates the pulling of the top holding piece 13.

[0028] In actual use, the planetary gear sleeve is arranged on the part of the planetary gear shaft 17 located at the bottom end of the planetary carrier 1, and the same set of keys are inserted into the planetary gear connecting keyway 18 opened on the surface of the planetary gear shaft 17 and the keyway on the inner wall of the planetary gear. The bottom end of the planetary gear shaft 17 is installed with a shaft head, and the shaft head is screwed into the screw hole 19 and connected to the planetary gear shaft 17. When the planetary gear shaft 17 for the planetary carrier 1 is to be replaced, the screw in the screw hole 19 is first unscrewed to remove the shaft head, and the planetary gear and the key in the planetary gear connecting keyway 18 are removed, and then the pull ring 16 is pulled up, and the pull ring 16 drives the top holding piece 13 to move upward, and then the planetary carrier 1 is turned over, so that the planetary gear shaft 17 and the half-moon disk 8 can be disengaged from the inner ring of the drilling disk 7 together, and the flat key 12 also follows the drilling disk 7 and the half-moon disk 8 slides out from the drilling disk keyway 11, and then the flat key 12 is pulled out from the planetary gear shaft keyway 9 and the half-moon disk keyhole 10, and the half-moon disk 8 can be removed from the side from the gap between the top holding piece 13 and the drilling disk 7, and the planetary gear shaft 17 can be directly pulled out from the drilling disk 7 or the inner ring of the top holding piece 13, which completes the removal of the planetary gear shaft 17; when installing a new planetary gear shaft 17, the top holding piece 13 is still moved away from the drilling disk 7, and the new planetary gear shaft 17 is inserted into the drilling disk 7 and the inner ring of the top holding piece 13, and then the half-moon disk 8 is inserted into the gap between the top holding piece 13 and the drilling disk 7, so that the half-moon disk 8 is sleeved on the surface of the planetary gear shaft 17, and then the flat key 12 is inserted into the planetary gear shaft keyway 9 and the half-moon disk keyhole 10. 0, and then align the flat key 12 with the drilling disk keyway 11, and then lower the height of the planetary gear shaft 17. While the planetary gear shaft 17 is lowered, the flat key 12 drives the half-moon disk 8 to lower together, and the flat key 12 is inserted into the drilling disk keyway 11, and then the top holding piece 13 is lowered, and the bottom end of the top holding piece 13 is against the top of the half-moon disk 8, and the annular sheet structure of the drilling disk 7 is against the bottom end of the half-moon disk 8, so that the half-moon disk 8 is clamped between the drilling disk 7 and the top holding piece 13. At the same time, a part of the flat key 12 is inserted into the half-moon disk key hole 10, and another part is inserted into the planetary gear shaft keyway 9, so that the height of the planetary gear shaft 17 is consistent with that of the half-moon disk 8, so that the planetary gear shaft 17 is also fixed in the shaft hole 2, which completes the installation of the planetary gear shaft 17. When the planetary gear rotates, the planetary gear shaft 17 rotates with the planetary gear, and the flat key 12 makes the half-moon disk 8 and the drilling disk 7 rotate with the planetary gear shaft 17. The guide rod 6 on the surface of the drilling disk 7 is inserted into the rod hole 5 so that the sliding bearing inner ring 4 rotates with the drilling disk 7, and the sliding bearing outer ring 3 is installed in the shaft hole 2 by interference fit, so that when the planetary gear drives the planetary gear shaft 17 to rotate, the friction force only exists between the sliding bearing outer ring 3 and the sliding bearing inner ring 4, preventing the planetary gear shaft 17 from being worn; the spring 14 is always in a compressed state, and the top end of the spring 14 is against the bottom end of the spring plate 15, so the spring 14 always generates a thrust on the top holding piece 13 at the bottom, and the top holding piece 13 is pressed against the top of the half-moon disk 8 under this thrust;The pull ring 16 is composed of a circular ring and two round rods, and the round rods are fixed on the top holding piece 13, so that a certain height is formed between the circular ring of the pull ring 16 and the top holding piece 13. The hand can be buckled into the bottom end of the circular ring of the pull ring 16 to pull the pull ring 16 upward, and then the pull ring 16 drives the top holding piece 13, which facilitates the pulling of the top holding piece 13. ;

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-rotating gear planet carrier, comprising: A planet carrier (1), characterized in that: a plurality of groups of shaft holes (2) are provided on the surface of the planet carrier (1), a sliding bearing outer ring (3) is movably connected in the shaft hole (2), a sliding bearing inner ring (4) is movably connected on the surface of the sliding bearing outer ring (3), a drilling disk (7) is movably connected on the surface of the sliding bearing inner ring (4), a rod hole (5) is provided on the surface of the sliding bearing inner ring (4), a guide rod (6) is provided on the surface of the drilling disk (7), the guide rod (6) is movably inserted in the rod hole (5), and a half-moon disk (8) is connected on the surface of the drilling disk (7). ), the surface of the half-moon disk (8) is connected to a planetary gear shaft (17), the surface of the guide rod (6) is movably connected to a top holding piece (13), the bottom end of the top holding piece (13) is against the top of the drilling disk (7), the surface of the planetary gear shaft (17) is provided with a planetary gear shaft keyway (9), the surface of the half-moon disk (8) is provided with a half-moon disk key hole (10), the surface of the drilling disk (7) is provided with a drilling disk keyway (11), and the flat key (12) is movably inserted into the planetary gear shaft keyway (9), the half-moon disk key hole (10) and the drilling disk keyway (11) at the same time.

2. The self-rotating gear planet carrier according to claim 1, characterized in that: A spring plate (15) is fixed to the top end of the guide rod (6), a spring (14) is sleeved on the rod body of the guide rod (6), the top end of the spring (14) abuts against the bottom end of the spring plate (15), and the bottom end of the spring (14) abuts against the top end of the top holding sheet (13).

3. The self-rotating gear planet carrier according to claim 1, characterized in that: A pull ring (16) is fixed to the top end of the holding piece (13).

4. The self-rotating gear planet carrier according to claim 1, characterized in that: The half-moon disk (8) is in the form of a semicircular cylindrical structure.

5. The self-rotating gear planet carrier according to claim 1, characterized in that: The drilling disk (7) is composed of two parts, namely a circular sheet structure at the bottom and a circular cylindrical structure at the top. The drilling disk keyway (11) is arranged on the inner ring of the circular main structure of the drilling disk (7), and the drilling disk keyway (11) extends from the middle of the inner ring of the drilling disk (7) to the top.

6. The self-rotating gear planet carrier according to claim 1, characterized in that: A screw hole (19) is provided at the bottom end of the planetary gear shaft (17), and a planetary gear connecting keyway (18) is provided on the columnar body of the planetary gear shaft (17).

Images