Centralized grease injection device of coal mining machine

Abstract

The utility model discloses a centralized grease injection device of a coal mining machine, and belongs to the technical field of coal mining machines. A centralized grease injection device of a coal mining machine comprises a centralized lubricating block arranged on an outer cover plate of the coal mining machine, a plurality of oil injection holes are formed in the centralized lubricating block, and the oil injection holes penetrate through the centralized lubricating block; each oil injection hole is communicated with a rubber pipe assembly, and the other end of each rubber pipe assembly is correspondingly communicated with a lubricating point. An oil filling port is formed in the outer cover plate of the coal mining machine, and each oil filling hole in the centralized lubricating block is located in the opening range of the oil filling port. According to the centralized lubricating block, each lubricating point which needs to be maintained daily of the coal mining machine is centralized on one centralized lubricating block, so that the lubricating efficiency is greatly improved, lubricating parts are not easy to omit, and the labor intensity of underground workers is greatly reduced; and meanwhile, each lubricating point of the coal mining machine is directly connected with the oil injection hole through the rubber pipe assembly, so that pollutants such as coal ash and water are effectively prevented from entering a bearing or a grease injection channel.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine technology, and in particular to a centralized grease injection device for a coal mining machine. Background Technology

[0002] Coal mining machines are one of the main fully mechanized mining equipment in underground coal mines, and their safe and efficient operation is of great significance to coal mine production. The drive wheels, wheel bearings, and rocker arm hinge pins of the coal mining machine's traveling gearbox are constantly exposed to the harsh underground environment and require regular lubrication with grease to prevent damage to the bearings and rocker arm hinge pins due to lubrication failure, which could lead to coal mining machine malfunctions. Traditional grease injection methods involve individually lubricating each dispersed part, which is problematic due to the confined space underground, high labor intensity, low efficiency, and the tendency to forget lubrication points. This approach no longer meets the development direction of high-end coal mining equipment. Summary of the Invention

[0003] The purpose of this invention is to provide a centralized grease injection device for coal mining machines to address the above-mentioned problems.

[0004] The purpose of this utility model is achieved as follows:

[0005] A centralized grease injection device for a coal mining machine includes a centralized lubrication block disposed on the outer cover plate of the coal mining machine. The centralized lubrication block has a plurality of oil injection holes, which penetrate the centralized lubrication block. Each oil injection hole is connected to a hose assembly, and the other end of each hose assembly is connected to a lubrication point.

[0006] The outer cover plate of the coal mining machine is provided with an oil injection port, and each oil injection hole on the centralized lubrication block is located within the opening range of the oil injection port.

[0007] The hose assembly has connector seats at both ends, and the connector seats are connected to the oil injection hole and the lubrication point by threads.

[0008] The hose assembly is connected to the connector seat via a U-shaped clip.

[0009] It also includes an oil cup, which is disposed inside the oil filling hole and does not protrude from the oil filling hole.

[0010] Wherein, the end of the oil injection hole near the oil injection port is a countersunk hole, and a small threaded hole is provided from the bottom of the countersunk hole to the end away from the oil injection port;

[0011] The oil cup is threadedly connected to the small threaded hole.

[0012] The oil injection hole is provided with a large threaded hole at the end away from the oil injection port; the large threaded hole, the small threaded hole and the countersunk hole are sequentially connected and coaxially arranged;

[0013] The connector seat is threaded into the large threaded hole.

[0014] A sealing gasket is provided between the connector seat and the centralized lubrication block;

[0015] And / or, a sealing combination gasket is provided between the connector seat and the lubrication point.

[0016] The centralized lubrication block is fixed to the outer cover plate of the coal mining machine by fastening screws and fastening washers.

[0017] The lubrication points include the goaf side lubrication point of the rocker arm hinge pin, the coal wall side lubrication point of the rocker arm hinge pin, the travel wheel bearing lubrication point, the goaf side bearing lubrication point of the drive wheel, and the coal wall side bearing lubrication point of the drive wheel.

[0018] The beneficial effects of this utility model are as follows: it concentrates all the lubrication points that need to be maintained in the daily operation of the coal mining machine into a centralized lubrication block, which greatly improves the lubrication efficiency, makes it less likely to miss lubrication points, and greatly reduces the labor intensity of underground workers; at the same time, the various lubrication points and oil injection holes of the coal mining machine are directly connected through the rubber hose assembly, which effectively prevents pollutants such as coal ash and water from entering the bearings or grease injection channels. Attached Figure Description

[0019] Figure 1 A schematic diagram of an embodiment of the centralized grease injection device for a coal mining machine of this utility model is shown.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1-Centralized lubrication block; 2-Oil cup; 3-Fastening screw; 4-Fastening washer; 5-Sealing combination washer; 6-Connector seat; 7-U-shaped clamp; 8-Hose assembly; 9-Lubrication point. Detailed Implementation

[0022] Various embodiments of this utility model will be described with reference to the accompanying drawings. In the specification and drawings, elements with similar structures or functions will be represented by the same element symbols. It is understood that the drawings are for reference and illustration only and are not intended to limit the scope of this utility model. The dimensions shown in the drawings are merely for clarity of description and do not limit the proportional relationships or provide an exhaustive description of the utility model, nor do they limit the scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] This utility model proposes a centralized grease injection device for coal mining machines.

[0025] In an embodiment, such as Figure 1 As shown, a centralized grease injection device for a coal mining machine includes a centralized lubrication block 1 disposed on the outer cover plate of the coal mining machine. The outer cover plate has an oil injection port, and each oil injection hole on the centralized lubrication block 1 is located within the opening range of the oil injection port. Specifically, the centralized lubrication block 1 is fixed to the outer cover plate of the coal mining machine by fastening screws 3 and fastening washers 4. For example, the centralized lubrication block 1 is fixedly connected to the outer cover plate of the coal mining machine on both sides near the oil injection port by fastening screws 3 and fastening washers 4.

[0026] The centralized lubrication block 1 has several oil injection holes that penetrate the block. Each oil injection hole is connected to a hose assembly 8, and the other end of each hose assembly 8 is connected to a lubrication point 9. The oil injection holes and hose assemblies 8 are connected to form a grease injection channel. Specifically, Figure 1 In the structure shown, there are five oil injection holes, which are connected to five lubrication points 9 via hose assembly 8. These five lubrication points 9 are: the goaf side lubrication point 9 of the rocker arm hinge pin, the coal wall side lubrication point 9 of the rocker arm hinge pin, the travel wheel bearing lubrication point 9, the goaf side bearing lubrication point 9 of the drive wheel, and the coal wall side bearing lubrication point 9 of the drive wheel. Of course, the number of lubrication points 9 can be increased or decreased according to specific needs, and the corresponding number of oil injection holes can also be increased or decreased.

[0027] In this embodiment, all the lubrication points 9 that require daily maintenance of the coal mining machine are concentrated on a single centralized lubrication block 1, which greatly improves lubrication efficiency, makes it less likely to miss any lubrication points, and significantly reduces the labor intensity of underground workers. At the same time, all lubrication points 9 and oil injection holes of the coal mining machine are directly connected through a hose assembly 8, effectively preventing contaminants such as coal ash and water from entering the bearings or grease injection channels.

[0028] For ease of installation, the hose assembly 8 has connector seats 6 at both ends, which are threaded to the oil injection hole and lubrication point 9 respectively. The hose assembly 8 is connected to the connector seats 6 via U-shaped clips 7. The hose assembly 8 includes a hose and connectors (including fittings, O-rings, etc.) at both ends. The connection is completed by inserting the connectors into the connector seats 6 and engaging the U-shaped clips 7. Because the hose assembly 8 includes O-rings, the sealing performance is also good. Specifically, Figure 1 In the structure shown, there are five oil injection holes and five lubrication points 9, which corresponds to the need for ten connectors 6. The number of connectors 6 increases or decreases according to the number of oil injection holes and lubrication points 9. Each connector 6 and hose assembly 8 are connected using U-shaped clips 7.

[0029] Furthermore, the centralized grease injection device for the coal mining machine also includes an oil injection cup 2, which is located inside the oil injection hole and does not protrude from the oil injection hole in order to protect the oil injection cup 2 from damage.

[0030] To facilitate the installation of the oil cup 2, the end of the oil filling hole near the oil inlet is a countersunk hole. A small threaded hole is provided from the bottom of the countersunk hole to the end away from the oil inlet. The oil cup 2 is threaded into the small threaded hole. The end of the oil filling hole away from the oil inlet has a large threaded hole. The large threaded hole, the small threaded hole, and the countersunk hole are sequentially connected and coaxially arranged. The connector 6 is threaded into the large threaded hole, thus making the oil cup 2 and the connector 6 connected.

[0031] To improve the overall sealing performance of the grease injection channel, it is preferable to provide a sealing combination gasket 5 between the connector seat 6 and the centralized lubrication block 1, and also to provide a sealing combination gasket 5 between the connector seat 6 and the lubrication point 9.

[0032] When the centralized grease injection device for coal mining machines described in this utility model is applied to a coal mining machine, when grease is injected into the lubrication parts (i.e., each lubrication point 9) of the coal mining machine, it is only necessary to connect the grease injection gun to the oil injection hole on the centralized lubrication block 1 (specifically, the oil injection cup 2), and the grease can reach each lubrication point 9 through the hose assembly 8. The operation is simple, the inspection and maintenance are convenient, and the lubrication efficiency is greatly improved.

[0033] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A centralized grease injection device for a coal mining machine, characterized in that, The system includes a centralized lubrication block installed on the outer cover plate of the coal mining machine. The centralized lubrication block has several oil injection holes that penetrate the centralized lubrication block. Each oil injection hole is connected to a hose assembly, and the other end of each hose assembly is connected to a lubrication point. The hose assembly includes a hose and connectors at both ends. The outer cover plate of the coal mining machine is provided with an oil injection port, and each oil injection hole on the centralized lubrication block is located within the opening range of the oil injection port; It also includes an oil cup, which is located inside the oil filling hole. The end of the oil filling hole near the oil filling port is a countersunk hole, and a small threaded hole is provided from the bottom of the countersunk hole to the end away from the oil filling port. The oil cup is threadedly connected to the small threaded hole.

2. The centralized grease injection device for a coal mining machine according to claim 1, characterized in that, The hose assembly has connector seats at both ends, and the connector seats are connected to the oil injection hole and the lubrication point by threads.

3. The centralized grease injection device for coal mining machines according to claim 2, characterized in that, The hose assembly is connected to the connector seat via a U-shaped clip.

4. The centralized grease injection device for a coal mining machine according to claim 2, characterized in that, The oil cup does not protrude from the oil filling hole.

5. The centralized grease injection device for a coal mining machine according to claim 2, characterized in that, The oil injection hole is provided with a large threaded hole at the end away from the oil injection port; the large threaded hole, the small threaded hole and the countersunk hole are sequentially connected and coaxially arranged; The connector seat is threaded into the large threaded hole.

6. The centralized grease injection device for a coal mining machine according to claim 2, characterized in that, A sealing gasket is provided between the connector seat and the centralized lubrication block; And / or, a sealing combination gasket is provided between the connector seat and the lubrication point.

7. The centralized grease injection device for a coal mining machine according to claim 1, characterized in that, The centralized lubrication block is fixed to the outer cover plate of the coal mining machine by fastening screws and fastening washers.

8. The centralized grease injection device for a coal mining machine according to claim 1, characterized in that, The lubrication points include the goaf side lubrication point of the rocker arm hinge pin, the coal wall side lubrication point of the rocker arm hinge pin, the travel wheel bearing lubrication point, the goaf side bearing lubrication point of the drive wheel, and the coal wall side bearing lubrication point of the drive wheel.

Images