CN215720559U - Novel integrated sun gear transmission structure of coal mining machine gear box - Google Patents
Novel integrated sun gear transmission structure of coal mining machine gear box Download PDFInfo
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- CN215720559U CN215720559U CN202120258994.2U CN202120258994U CN215720559U CN 215720559 U CN215720559 U CN 215720559U CN 202120258994 U CN202120258994 U CN 202120258994U CN 215720559 U CN215720559 U CN 215720559U
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- sun gear
- coal mining
- transmission structure
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Abstract
The utility model discloses a novel integrated sun gear transmission structure of a gear box of a coal mining machine, which comprises a sun gear, an internal spline and a planet gear, wherein the internal spline and the planet gear are matched with the sun gear; the novel integrated sun gear transmission structure of the gear box of the coal mining machine optimizes the sun gear structure, and reduces process gear shaft necks without actual effects between gears and splines; and the novel integrated sun gear can realize one-time processing of gear, spline hobbing and gear grinding procedures, optimizes the space of the process gear journal of the sun gear through integrated design, realizes maximization of effective bearing size of the spline for transmitting static load and the gear for transmitting dynamic load in the same size space, realizes maximization of strength in a limited space, and meets the requirements of specific working conditions of limited space, large load and high safety factor requirement of coal mine mechanical equipment.
Description
Technical Field
The utility model relates to the field of transmission of gear boxes of coal mining machines, in particular to a novel integrated sun gear transmission structure of the gear boxes of the coal mining machines.
Background
At present, the structure shown in the attached drawing 1 is generally adopted in the domestic coal mining machine planetary transmission, the spline 3 is statically connected to transmit torque, and the gear end and a plurality of planetary wheels realize dynamic load transmission. This structure has the following problems: 1. a tool withdrawal groove needs to be arranged between the gear of the sun gear 2 and the spline, so that the axial size is larger, the requirement of a coal mining machine is compact, the traditional tool withdrawal groove structure of the sun gear occupies larger space, and meanwhile, more materials are used and waste materials; 2. because the sun gear and the spline have different modulus and tooth number, the machining and the heat treatment are separately processed, and the processing procedure is complicated; 3. the diameter of a grinding wheel adopted by the spline gear grinding is much larger than that of a gear hob, so that the axial size of the process gear journal without actual efficacy is further increased; 4. under the condition of limited space size, the effective bearing size of the gear and the spline is greatly reduced due to the existence of the process gear shaft neck, and the safety coefficient of the equipment is reduced.
Therefore, a novel integrated sun gear transmission structure of a gear box of a coal mining machine is provided.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a novel integrated sun gear transmission structure of a gear box of a coal mining machine, and the utility model provides the following technical scheme: including sun gear and matched with it internal spline and planet wheel, be provided with the external tooth of integral design on the sun gear, and the sun gear passes through external tooth and internal spline static connection and the meshing transmission is realized to the planet wheel, the connecting piece has between planet wheel and the internal spline.
Preferably, the cross-section of the connector is circular.
Preferably, the sun gear is circular in cross section.
Preferably, one side of the sun gear is journalled.
Preferably, the sun gear is designed in an integral manner by a gear and a spline.
Compared with the prior art, the utility model has the following beneficial effects: the novel integrated sun gear transmission structure of the coal mining machine gear box has the advantages that the axial size of the sun gear is reduced, the structure is compact, and materials are saved; the tooth widths of the spline and the gear can be increased, and the bearing capacity of the spline and the gear is improved; the machining and heat treatment processes can be completed simultaneously, the machining process is reduced, and the machining efficiency is improved; the spline adopts a gear grinding process, so that the transmission precision is improved.
Drawings
FIG. 1 is a sun spline configuration in current common use;
FIG. 2 is a schematic view of the overall structure of the novel integrated sun gear transmission structure of the gearbox of the coal mining machine of the present invention;
in the figure: 1. a planet wheel; 2. a sun gear; 3. a connecting member; 4. an internal spline; 5. and (3) a shaft neck.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the novel integrated sun gear transmission structure of the gear box of the coal mining machine comprises a sun gear 2, an internal spline 4 and a planet gear 1, wherein the internal spline 4 and the planet gear 1 are matched with the sun gear 2, the sun gear 2 is provided with external teeth in integral design, the sun gear 2 is statically connected with the internal spline 4 through the external teeth and is in meshing transmission with the planet gear 1, and a connecting piece 3 is arranged between the planet gear 1 and the internal spline 4.
The cross-section of the connecting piece 3 is circular.
The sun wheel 2 is circular in cross-section.
The sun wheel 2 has a journal 5 on one side.
The sun gear 2 is designed in a gear and spline integrated manner.
It is noted that the planetary gear set comprises a sun gear 2 and an internal spline 4 and a planetary gear 1 which are matched with the sun gear. The sun wheel 2 is provided with integrally designed external teeth, and the sun wheel 2 is statically connected with the internal spline 4 through the external teeth and is in meshing transmission with the planet wheel 1.
In the design process of the sun gear 2, the sun gear 2 adopts the integral design of a gear and a spline; in the process of machining the sun gear 2, the external teeth finish rough machining and finish machining of the tooth part through one-step hobbing and gear grinding, only one step is needed for heat treatment, and a tool withdrawal groove is not needed due to the structure, so that the axial size is reduced, and the structure of the gear box is more compact.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Novel integration sun gear transmission structure of coal-winning machine gear box, including sun gear (2) and complex internal spline (4) and planet wheel (1) with it, its characterized in that: the sun wheel (2) is provided with integrally designed external teeth, the sun wheel (2) is statically connected with an internal spline (4) through the external teeth and realizes meshing transmission with the planet wheel (1), and a connecting piece (3) is arranged between the sun wheel (2) and the internal spline (4);
the sun wheel (2) adopts an integral design of a gear and a spline.
2. The novel integrated sun gear transmission structure of the gearbox of the coal mining machine as claimed in claim 1, wherein: the cross section of the connecting piece (3) is circular.
3. The novel integrated sun gear transmission structure of the gearbox of the coal mining machine as claimed in claim 1, wherein: the cross section of the sun wheel (2) is circular.
4. The novel integrated sun gear transmission structure of the gearbox of the coal mining machine as claimed in claim 1, wherein: one side of the sun wheel (2) has a journal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120258994.2U CN215720559U (en) | 2021-01-29 | 2021-01-29 | Novel integrated sun gear transmission structure of coal mining machine gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120258994.2U CN215720559U (en) | 2021-01-29 | 2021-01-29 | Novel integrated sun gear transmission structure of coal mining machine gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215720559U true CN215720559U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120258994.2U Active CN215720559U (en) | 2021-01-29 | 2021-01-29 | Novel integrated sun gear transmission structure of coal mining machine gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215720559U (en) |
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2021
- 2021-01-29 CN CN202120258994.2U patent/CN215720559U/en active Active
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