Planetary positioning structure of coal mining machine

Abstract

The utility model discloses a planetary positioning structure of a coal mining machine, which relates to the technical field of coal mining machines and comprises a planetary reducer, an end cover, a shell and a bearing bracket, and the end cover is detachably mounted at one end of the planetary reducer; one end of the planetary reducer is provided with a bearing frame, the bearing frame is annular, the bearing frame is detachably installed at the other end of the planetary reducer, the shell is detachably installed on the planetary reducer, the bearing frame and the shell are provided with pin holes which are communicated with each other, the pin holes penetrate through the bearing frame and the shell, and a pair of positioning pins is inserted in the pin holes. A plugging assembly used for preventing the positioning pin from jumping out is installed in the pin hole, and the technical problems that an existing planet positioning structure is complex in installation mode and structure are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machines, in particular to a planetary positioning structure for coal mining machines. Background Art

[0002] my country has abundant coal reserves and ranks first in the world in terms of output. In recent years, various mines have been pursuing fully mechanized mining equipment that can meet the needs of high-yield and high-efficiency coal mining faces. Coal mining machines are developing towards high mining height and high power. High-power, heavy-loaded, fast-traction coal mining machines place higher demands on the strength of mechanical components. The planetary reducer of a coal mining machine plays a role in deceleration and torque transmission, which is very important, especially for heavy-loaded coal mining machines, which requires it to be not only stable and reliable but also easy to install.

[0003] However, the positioning of the existing planetary reducer is to connect the bearing frame to the end cover through the annular connecting structure and the fixing structure thereon, and then fix the housing to the end cover through the connecting structure (such as Figure 1 As shown), this method requires that the gear ring and the bearing frame gear ring are aligned, and the bearing frame and the end cover are aligned before installation. The installation method is complicated, and the traditional bearing frame tooth side is connected to the gear ring, and the other side crosses the gear, and multiple tongues need to be processed to position with the end cover, and the structure is relatively complicated (such as Figure 2 , 3 as shown). Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a planetary positioning structure for a coal mining machine, which solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a planetary positioning structure for a coal mining machine, including a planetary reducer, an end cover, and a shell. The end cover is removably installed on one end of the planetary reducer, and also includes a bearing frame; the bearing frame is annular, and the bearing frame is removably installed on the other end of the planetary reducer. The shell is removably installed on the planetary reducer. Pin holes that are interconnected are provided on the bearing frame and the shell. The pin holes pass through the bearing frame and the shell. A pair of positioning pins are inserted in the pin holes, and a sealing component for preventing the positioning pins from slipping out is installed in the pin holes.

[0006] Preferably, the blocking assembly includes an upper plug, and the upper plug is movably mounted at the openings at both ends of the pin hole.

[0007] Preferably, a first annular groove is provided on the pin hole wall at the upper plug, a half ring is provided in the first annular groove, one end of the half ring abuts against the upper plug groove, and the other end abuts against the end face of the pin hole.

[0008] Preferably, a second annular groove is provided on the pin hole wall near the openings at both ends of the pin hole, a retaining ring is provided in the second annular groove, and the retaining ring abuts against the upper plug.

[0009] Preferably, one end of the positioning pin is provided with a large chamfer.

[0010] Beneficial Effects

[0011] The utility model provides a planetary positioning structure for a coal mining machine, which has the following beneficial effects:

[0012] 1. By setting the bearing frame into a ring shape, removing the positioning tongue on the original bearing frame, simplifying the parts, the processing time can be effectively reduced. By opening a pin hole, it is convenient to insert the positioning pin to fix the bearing frame to the housing. This positioning method does not need to ensure that the gear ring and the bearing frame teeth are aligned, nor does it need to ensure that the bearing frame and the end cover are aligned. It can be installed, which is simple and quick;

[0013] 2. The first annular groove can be used to place the half ring, the half ring can be used to fix the upper plug, and the retaining ring can be installed to further fix the upper plug;

[0014] 3. By setting the chamfer, when installing the shell, there may be a deviation between the bearing frame hole and the shell hole. When installing the locating pin, as the locating pin gradually enters, the large chamfer will generate torque on the bearing frame, and the bearing frame will rotate until the hole is aligned with the shell hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the prior art of the utility model;

[0016] Figure 2 This is a schematic diagram of the formal internal structure of the utility model;

[0017] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0018] Figure 4 for Figure 3 A magnified schematic diagram of B;

[0019] Figure 5 This is a schematic diagram of the bearing frame in the utility model;

[0020] Figure 6 for Figure 5 Cross-sectional view of CC;

[0021] Figure 7 This is a schematic diagram of the positioning pin in the utility model;

[0022] Figure 8 This is a schematic diagram of the upper blockage in the utility model;

[0023] Fig. 9 It is a schematic diagram of a half ring in the utility model.

[0024] In the figure: 1, end cover; 2, bearing frame; 3, housing; 4, pin hole; 5, positioning pin; 6, upper plug; 7, half ring; 8, retaining ring; 9, first annular groove; 10, second annular groove; 100, planetary reducer. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, wherein the directional terms such as "upper" and "lower" mentioned herein are as follows: Figure 1 The orientation is used as a reference.

[0026] See also Figure 1-9 The utility model provides a technical solution: a planetary positioning structure of a coal mining machine, including a planetary reducer 100, an end cover 1, and a shell 3. The end cover 1 is removable and installed at one end of the planetary reducer 100, and also includes a bearing frame 2; the bearing frame 2 is annular, and the bearing frame 2 is removable and installed at the other end of the planetary reducer 100, and the shell 3 is removable and installed on the planetary reducer 100. Pin holes 4 that are interconnected are opened on the bearing frame 2 and the shell 3. The pin holes 4 penetrate the bearing frame 2 and the shell 3, and a pair of positioning pins 5 are inserted in the pin holes 4. A blocking component for preventing the positioning pins 5 from escaping is installed in the pin holes 4. By setting the bearing frame 2 to be annular, the positioning tongue on the original bearing frame 2 is cancelled, and the parts are simplified, the processing time can be effectively reduced. By opening the pin holes 4, the positioning pins 5 are inserted to fix the bearing frame 2 to the shell 3. This positioning method does not need to ensure that the gear ring is aligned with the teeth of the bearing frame 2, nor does it need to ensure that the bearing frame 2 is aligned with the end cover 1, and can be installed. The installation is simple and quick.

[0027] Specifically, the blocking component includes an upper blocking component 6 , which is movably installed at the openings at both ends of the pin hole 4 . By installing the upper blocking component 6 , the pin hole 4 can be blocked to prevent the positioning pin 5 from jumping out.

[0028] Specifically, a first annular groove 9 is opened on the wall of the pin hole 4 located at the upper plug 6, and a half ring 7 is arranged in the first annular groove 9. One end of the half ring 7 abuts against the groove of the upper plug 6, and the other end abuts against the end face of the pin hole 4. The first annular groove 9 can be used to place the half ring 7, and the half ring 7 can be used to fix the upper plug 6.

[0029] Specifically, a second annular groove 10 is opened on the wall of the pin hole 4 near the openings at both ends of the pin hole 4, and a retaining ring 8 is arranged in the second annular groove 10. The retaining ring 8 abuts against the upper plug 6. By installing the second annular groove 10, the retaining ring 8 can be used to place the retaining ring 8, and the upper plug 6 can be further fixed by installing the retaining ring 8.

[0030] Specifically, a large chamfer is provided at one end of the locating pin 5. By providing the chamfer, when installing the shell 3, there may be a deviation between the hole of the bearing frame 2 and the hole of the shell 3. When installing the locating pin 5, as the locating pin 5 gradually enters, the large chamfer will generate torque on the bearing frame 2, and the bearing frame 2 will rotate until the hole is aligned with the hole of the shell 3.

[0031] The working principle and use process of the utility model are as follows: during installation, the planetary reducer 100 and the bearing frame 2 are placed in the housing 3, and the positioning pin 5 is inserted into the pin hole 4. With the insertion of the positioning pin 5, under the action of the chamfering of the positioning pin 5, the hole of the bearing frame 2 is aligned with the hole of the housing 3, the half ring 7 is placed in the first annular groove 9, the upper plug 6 is installed at both ends of the pin hole 4, and then the retaining ring 8 is placed in the second annular groove 10, thereby completing the installation, which is convenient and quick.

[0032] 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 planetary positioning structure for a coal mining machine, comprising a planetary reducer (100), an end cover (1), and a housing (3), wherein the end cover (1) is detachably mounted on one end of the planetary reducer (100), and is characterized in that: The invention also comprises a bearing frame (2); the bearing frame (2) is annular, the bearing frame (2) is detachably mounted on the other end of the planetary reducer (100), the housing (3) is detachably mounted on the planetary reducer (100), the bearing frame (2) and the housing (3) are provided with mutually connected pin holes (4), the pin holes (4) penetrate the bearing frame (2) and the housing (3), a pair of positioning pins (5) are inserted in the pin holes (4), and a blocking component for preventing the positioning pins (5) from escaping is installed in the pin holes (4).

2. A planetary positioning structure for a coal mining machine according to claim 1, characterized in that: The plugging assembly comprises an upper plug (6), and the upper plug (6) is movably mounted at the openings at both ends of the pin hole (4).

3. A planetary positioning structure for a coal mining machine according to claim 2, characterized in that: A first annular groove (9) is provided on the wall of the pin hole (4) located at the upper plug (6), a half ring (7) is provided in the first annular groove (9), one end of the half ring (7) is in contact with the groove of the upper plug (6), and the other end is in contact with the end face of the pin hole (4).

4. A planetary positioning structure for a coal mining machine according to claim 2, characterized in that: A second annular groove (10) is provided on the wall of the pin hole (4) near the openings at both ends of the pin hole (4), a retaining ring (8) is provided in the second annular groove (10), and the retaining ring (8) abuts against the upper plug (6).

5. A planetary positioning structure for a coal mining machine according to claim 1, characterized in that: One end of the positioning pin (5) is provided with a large chamfer.

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