Protection device for rocker arm planetary mechanism of coal mining machine

Abstract

The utility model provides a coal mining machine rocker arm planetary mechanism protection device which comprises a protection cover which is in the shape of a hollow cylinder with an opening in the bottom end. The fixing ring is attached to the outer side of the protection cover in the circumferential direction of the protection cover, and a fixing hole is formed in the fixing ring; the fixing seat is arranged on the protective cover, the fixing seat is in a hollow cylinder shape, and an inner cavity of the fixing seat is communicated with an inner cavity of the protective cover; and the sealing groove is arranged on the outer side of the protection cover in an attached mode in the circumferential direction of the protection cover, and a sealing ring is arranged in the sealing groove. Compared with the prior art, the whole planetary mechanism is connected through the combining bolt of the planetary mechanism and the rocker arm, so that the whole planetary mechanism becomes a complete part, the structure is simple, the strength is reliable, the problems of transportation and storage of spare parts of the planetary mechanism are effectively solved, the parts of the planetary mechanism can be protected, and meanwhile, the service life of the planetary mechanism is prolonged. The strength and firmness can be further improved by matching with a fixing assembly located at the bottom of the planetary mechanism.

Description

Technical Field

[0001] The utility model relates to the field of coal mining machine structures, in particular to a protective device for a rocker arm planetary mechanism of a coal mining machine. Background Art

[0002] The planetary mechanism of a shearer's rocker arm is a crucial component and a key element of its transmission mechanism. During operation, harsh working conditions can easily damage the transmission elements or the entire mechanism. To minimize downtime underground, customers often maintain a spare planetary mechanism for emergency use.

[0003] The planetary mechanism is an important structure that connects the rocker arm spur gear transmission box and the coal mining machine drum. As a large component, the planetary mechanism needs to be fixed by the rocker arm housing. Once it is separated from the rocker arm housing, some parts of the planetary mechanism are in a scattered state, which can easily cause the loss and damage of the planetary mechanism parts during transportation and storage. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a coal mining machine rocker arm planetary mechanism protection device which has a simple overall structure and can provide a protective effect on the components of the planetary mechanism.

[0005] In order to solve the above technical problems, the utility model provides a coal mining machine rocker arm planetary mechanism protection device, including: a protective cover, which is a hollow cylinder with an open bottom end; a fixing ring, which is fitted on the outer side of the protective cover along the circumference of the protective cover, and a fixing hole is provided on the fixing ring; a fixing seat, which is provided on the protective cover, and the fixing seat is a hollow cylinder, and the inner cavity of the fixing seat is connected to the inner cavity of the protective cover; a sealing groove, which is fitted on the outer side of the protective cover along the circumference of the protective cover, and a sealing ring is provided in the sealing groove.

[0006] A first rib is provided on the protective cover.

[0007] There are multiple first ribs, and the multiple first ribs are arranged at intervals.

[0008] A hanging hole is provided on the first rib.

[0009] A second rib is provided on the fixing ring.

[0010] There are multiple second ribs, and the multiple second ribs are arranged at intervals.

[0011] The sealing ring is an O-shaped sealing ring.

[0012] The fixing seat and the protective cover are arranged concentrically.

[0013] There are multiple fixing holes, and the multiple fixing holes are arranged at intervals.

[0014] Compared with the prior art, the utility model connects the entire planetary mechanism through the planetary mechanism itself and the rocker arm through the coupling bolts, making it a complete component with a simple structure and reliable strength. It effectively solves the transportation and storage problems of planetary mechanism spare parts and can provide a protection for the components of the planetary mechanism. At the same time, in conjunction with the fixing assembly located at the bottom of the planetary mechanism, the strength and firmness can be further improved. Moreover, the planetary mechanism assembled in the factory has high installation and matching quality, which reduces the workload of workers in reassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, purposes and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments made with reference to the following drawings.

[0016] Figure 1 This is a schematic diagram of the structure of the protective device for the rocker arm planetary mechanism of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the protective device for the rocker arm planetary mechanism of the utility model Figure 2 ;

[0018] Figure 3 This is a cross-sectional view of the protective device for the rocker arm planetary mechanism of the utility model for a coal mining machine;

[0019] Figure 4 This is a schematic diagram of the installation of the planetary mechanism protection device for the rocker arm of a coal mining machine according to the utility model;

[0020] Description of the reference numerals in the accompanying drawings of the utility model coal mining machine rocker arm planetary mechanism protection device:

[0021] 1-Protective cover 2-Fixing ring 3-Fixing hole

[0022] 4-fixed seat 5-sealing groove 6-sealing ring

[0023] 7-First rib plate 8-Hanging hole 9-Second rib plate

[0024] 10-bolt 11-spline shaft 12-bearing

[0025] 13-Screw 14-Washer 15-Spacer

[0026] 16-cover plate 17-planetary mechanism 18-sealed cavity DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any way. It should be noted that those skilled in the art may make various changes and improvements without departing from the scope of the present invention, and these modifications are all within the scope of protection of the present invention.

[0028] like Figures 1 to 4 As shown, the planetary mechanism protection cover 1 of the planetary mechanism protection device of the rocker arm of the coal mining machine of the present invention is a welded part, which is composed of a protection cover 1, an O-ring 6, a fixing assembly (screws 13, washers 14, gaskets 15, cover plates 16), a second rib plate 9 and a large rib plate 7. The protection cover 1 and the planetary mechanism 17 are connected by inserting the long bolts 10 of the planetary mechanism 17 into the fixing holes 3. After the protection cover 1 and the fixing seat 4 are assembled onto the planetary mechanism 17, they form a sealed cavity 18 with the planetary mechanism 17 to protect the spline shaft 11 and bearing 12 of the planetary mechanism 17. Four large rib plates 7 are provided on the protection cover 1, and eight second rib plates 9 are provided on the fixing ring 2 to enhance the rigidity and strength of the protection cover 1 and improve the reliability of the protection cover 1. A lifting hole 8 is provided on the large rib plate 7 to facilitate the overall lifting and hoisting of the planetary mechanism 17. An O-ring 6 is provided in the sealing groove 5 at the connection between the protective cover 1 and the planetary mechanism 17 , which can effectively prevent water and dust from entering the gears and bearings of the planetary mechanism 17 , thereby protecting the planetary mechanism 17 .

[0029] This new protective device for the planetary mechanism of a coal mining machine rocker arm features a simple structure and reliable strength. It solves the problem of the planetary mechanism being unable to form a complete structure during transportation and storage, effectively protecting the planetary mechanism and providing high reliability. Furthermore, the internal spray water supply device of the planetary mechanism is sealed with a cover plate and gasket, effectively reducing contamination of the water supply pipeline by the external environment.

[0030] The above describes specific embodiments of the present invention. It should be noted that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A protective device for the rocker arm planetary mechanism of a coal mining machine, characterized in that: include: A protective cover, the protective cover being in the shape of a hollow cylinder with an open bottom end; A fixing ring, the fixing ring is arranged on the outer side of the protective cover along the circumference of the protective cover, and a fixing hole is provided on the fixing ring; A fixing seat, the fixing seat being arranged on the protective cover, the fixing seat being in a hollow cylindrical shape, and the inner cavity of the fixing seat being in communication with the inner cavity of the protective cover; A sealing groove is provided on the outer side of the protective cover along the circumference of the protective cover, and a sealing ring is provided in the sealing groove.

2. The coal mining machine rocker arm planetary mechanism protection device according to claim 1, characterized in that: A first rib is provided on the protective cover.

3. The coal mining machine rocker arm planetary mechanism protection device according to claim 2, characterized in that: There are multiple first ribs, and the multiple first ribs are arranged at intervals.

4. The coal mining machine rocker arm planetary mechanism protection device according to claim 3, characterized in that: A hanging hole is provided on the first rib.

5. The coal mining machine rocker arm planetary mechanism protection device according to claim 4, characterized in that: A second rib is provided on the fixing ring.

6. The coal mining machine rocker arm planetary mechanism protection device according to claim 5, characterized in that: There are multiple second ribs, and the multiple second ribs are arranged at intervals.

7. The coal mining machine rocker arm planetary mechanism protection device according to claim 6, characterized in that: The sealing ring is an O-shaped sealing ring.

8. The coal mining machine rocker arm planetary mechanism protection device according to claim 7, characterized in that: The fixing seat and the protective cover are arranged concentrically.

9. The coal mining machine rocker arm planetary mechanism protection device according to claim 8, characterized in that: There are multiple fixing holes, and the multiple fixing holes are arranged at intervals.

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