Coal cutter oiling cover plate

Abstract

The application relates to a coal mining machine oiling cover plate and belongs to the technical field of coal mining machines. The coal mining machine oiling cover plate comprises a cover plate body arranged at an oil tank oiling port of a coal mining machine; an oiling hole is arranged on the cover plate body, the oiling hole is provided with a filter assembly and an openable and closable oil cover, and the oil cover is closed on the oiling hole; when oil is added to the oil tank, the oil flows into the oiling hole, passes through the filter assembly to filter impurities, and finally flows into the oil tank. The application only needs to open the oil cover when oil is added to the coal mining machine, the whole oiling cover plate does not need to be disassembled, impurities can be avoided from being mixed into oil teeth, and the filter assembly is arranged at the oiling hole, so that impurities in oil can be filtered, and external impurities can be further avoided from entering.

Description

Technical Field

[0001] This invention relates to the field of coal mining machine technology, and in particular to a coal mining machine oiling cover. Background Technology

[0002] During routine maintenance of coal mining machines, it is necessary to check the levels of hydraulic oil and gear oil to prevent malfunctions in the hydraulic and transmission systems caused by insufficient oil. Checking and adding oil requires removing the filler cap, which allows coal ash powder from the top of the machine to easily enter the oil tank, causing oil contamination. Firstly, contaminated gear oil will accelerate wear in the transmission system, shortening its lifespan. Secondly, contaminated hydraulic oil will frequently clog the filter, resulting in insufficient hydraulic oil flow to the regulating valve assembly, affecting the rocker arm's lifting speed and thus reducing production efficiency. Furthermore, if the coal mining machine is equipped with a proportional control valve, this valve assembly requires extremely high hydraulic oil filtration accuracy; if impurities flow into the proportional control valve, it can easily damage the valve assembly.

[0003] Therefore, it is urgent to take effective measures to not only prevent external impurities from entering the oil tank during the process of checking oil level and replenishing oil, but also to effectively filter impurities in the oil itself. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a coal mining machine oiling cover.

[0005] The objective of this invention is achieved as follows:

[0006] A coal mining machine refueling cover includes: a cover body for being installed at the refueling port of the coal mining machine's oil tank; the cover body is provided with an oil injection hole, the oil injection hole is provided with an oil filter assembly and an openable and closable oil cap, the oil cap covering the oil injection hole;

[0007] When refueling the oil tank, the oil flows in through the oil filling hole, passes through the oil filter assembly to filter impurities, and finally flows into the oil tank.

[0008] The oil filtration assembly includes a mounting base and a filter element, wherein the filter element is connected to the bottom of the mounting base;

[0009] Mounting holes are provided on the cover plate body;

[0010] The mounting base is fixed in the mounting hole, so that the filter element extends into the oil tank;

[0011] The oil filling hole is located on the mounting base and is connected to the filter element.

[0012] The mounting base has a first mounting flange extending outward near its top, and a second mounting flange extending inward near its bottom surface inside the mounting hole. The first mounting flange and the second mounting flange match each other and are connected by screws, so that the mounting base is fixed in the mounting hole.

[0013] Wherein, the thickness of the mounting base is greater than the thickness of the cover plate body, and after the mounting base is fixed to the mounting hole, a part of the mounting base extends into the oil tank;

[0014] The bottom surface of the cover plate body is provided with a welding block corresponding to the position of the screw. The welding block is close to the side wall of the mounting base, and the screw extends into the welding block.

[0015] A mounting seat sealing ring is provided between the welding block and the side wall of the mounting seat;

[0016] And / or, a filter element sealing ring is provided between the filter element and the bottom surface of the mounting base.

[0017] The oil injection hole is a stepped hole, which includes a large hole near the top of the mounting base and a small hole near the bottom of the mounting base. The diameter of the large hole is larger than the diameter of the small hole, and the small hole is provided with internal threads.

[0018] The oil cap is a screw plug, which includes a nut and a threaded rod. The threaded rod has an external thread, which engages with the internal thread so that the screw plug covers the oil injection hole.

[0019] A shoulder is formed at the connection between the large hole and the small hole, the nut is fitted onto the shoulder, and a screw plug sealing gasket is provided between the nut and the shoulder.

[0020] The cover plate body is provided with an oil level observation port, and the oil level observation port is provided with a removable oil needle, which is inserted into the oil tank through the oil level observation port.

[0021] The oil needle includes an oil needle body, which has a notch to indicate the lower limit of oil volume.

[0022] The oil needle further includes an internal hexagonal connector, which includes a cover and a connecting part that are coaxially connected, and the connecting part is provided with external threads; the oil needle body is connected to the bottom of the connecting part.

[0023] The oil level observation port is a stepped hole, which includes a large hole near the top of the cover plate body and a small hole near the bottom of the cover plate body. The diameter of the large hole is larger than the diameter of the small hole, and the small hole is provided with internal threads.

[0024] The internal hexagonal connector engages with the internal thread in the small hole via the external thread on its connecting part, allowing the oil needle body to extend into the oil tank.

[0025] Wherein, the cross-section of the cover portion is larger than the cross-section of the connecting portion, and a shoulder is formed at the connection between the large hole and the small hole;

[0026] The cover fits over the shoulder, and an oil needle sealing gasket is provided between the cover and the shoulder.

[0027] The beneficial effects of this invention are as follows: when adding oil, only the oil cap needs to be opened, without disassembling the entire oil filling cover plate, which can prevent impurities from entering the oil teeth. In addition, the oil filling hole is equipped with a filter component, which can filter the impurities in the oil itself and further prevent external impurities from entering. Attached Figure Description

[0028] Figure 1 The diagram shows top views of embodiments one and two of the oil filling cover plate for the coal mining machine of the present invention.

[0029] Figure 2 Cross-sectional structural diagrams of embodiments one and two of the coal mining machine oiling cover plate of the present invention are shown.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Cover plate body;

[0032] 2-Oil needle body;

[0033] 3-Oil needle sealing gasket;

[0034] 4-Welding block;

[0035] 5- Screws;

[0036] 6-Oil cap;

[0037] 7-Screw plug gasket;

[0038] 8-Mounting base;

[0039] 9-Mounting seat sealing ring;

[0040] 10 - Filter element sealing ring;

[0041] 11-Filter element;

[0042] 12- Oil injection hole;

[0043] 13-Gap;

[0044] 14-Internal hex socket connector. Detailed Implementation

[0045] Various embodiments of the present invention will be described with reference to the accompanying drawings. In the specification and drawings, elements having 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 invention. The dimensions shown in the drawings are merely for clarity of description and do not limit the scale or provide an exhaustive description of the invention, nor are they intended to limit the scope of the invention.

[0046] In the description of this invention, 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 invention 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 invention.

[0047] This invention proposes a refueling cover for a coal mining machine.

[0048] In Example 1, as Figure 1-2 As shown, a coal mining machine refueling cover includes a cover body 1, which is used to install at the refueling port of the coal mining machine's oil tank. The cover body 1 is provided with an oil injection hole 12, the oil injection hole 12 is provided with an oil filter assembly and an openable and closable oil cap 6, the oil cap 6 covering the oil injection hole 12.

[0049] When refueling the tank, the oil flows in through the oil filling hole 12, passes through the oil filter assembly to filter impurities, and finally flows into the tank.

[0050] In this embodiment, when the coal mining machine's oil tank needs refilling, only the oil cap 6 needs to be opened, eliminating the need to disassemble the entire refill cover as before, thus preventing impurities from entering the oil tank. Furthermore, a filter assembly is installed at the oil filling hole 12, which can filter impurities in the oil itself and further prevent external impurities from entering. The preferred filter assembly here has a filtration accuracy of 80μm and a nominal flow rate of 63L / min, meeting both the requirements for impurity filtration and the flow rate for refilling.

[0051] More specifically, the oil filter assembly includes a mounting base 8 and a filter element 11, with the filter element 11 connected to the bottom of the mounting base 8. A mounting hole is provided on the cover plate body 1. The mounting base 8 is fixed within the mounting hole, allowing the filter element 11 to extend into the oil tank. An oil filling hole 12 is provided on the mounting base 8 and communicates with the filter element 11. To facilitate filter element replacement, the mounting base 8 has a first outwardly extending mounting flange near its top, and a second inwardly extending mounting flange near its bottom surface within the mounting hole. The first and second mounting flanges are matched and connected by a screw 5, thus fixing the mounting base 8 within the mounting hole. When the filter element needs replacement, the screw 5 is loosened, and the entire oil filter assembly is removed from the oil tank. The filter element is preferably threaded to the bottom of the mounting base 8. Therefore, simply unscrew the old filter element, install the new filter element, and then fix the oil filter assembly back to the cover plate body 1 using the screw 5 to complete the filter element replacement, which is both convenient and quick.

[0052] In this embodiment, the thickness of the mounting base 8 is greater than the thickness of the cover plate body 1. After the mounting base 8 is fixed in the mounting hole, a portion of the mounting base 8 extends into the oil tank. A welding block 4 is provided on the bottom surface of the cover plate body 1 corresponding to the position of the screw 5. The welding block 4 is tightly attached to the side wall of the mounting base 8, and the screw 5 extends into the welding block 4. This structure makes the connection between the filter element assembly and the cover plate body 1 more stable.

[0053] Furthermore, the oil filling hole 12 is a stepped hole, comprising a large hole near the top of the mounting base 8 and a small hole near the bottom of the mounting base 8. The diameter of the large hole is larger than that of the small hole, and the small hole has internal threads. The oil cap 6 is a screw plug, comprising a nut and a threaded rod. The threaded rod has external threads, which engage with the internal threads to cover the oil filling hole 12. A shoulder is formed at the connection between the large and small holes, and the nut covers the shoulder. A screw plug sealing gasket 7 is provided between the nut and the shoulder. A mounting base sealing ring 9 is provided between the welded block 4 and the side wall of the mounting base 8. A filter element sealing ring 10 is provided between the filter element 11 and the bottom surface of the mounting base 8. By setting the screw plug sealing gasket 7, the mounting base sealing ring 9, and the filter element sealing ring 10, the sealing performance of the oil tank can be improved.

[0054] In Example 2, based on Example 1, as follows: Figure 1-2 As shown, the cover plate body 1 is also provided with an oil level observation port, and an insertable oil needle is provided on the oil level observation port. The oil needle is inserted into the oil tank through the oil level observation port. Specifically, the oil needle includes an oil needle body 2, and the oil needle body 2 is provided with a notch 13, which is used to indicate the lower limit of the oil level.

[0055] In this embodiment, the actual oil level can be determined by the oil mark on the oil needle, thus deciding whether to add oil, so as to avoid removing the cover to check the oil level. The notch 13 is used to indicate the lower limit of the oil level. When the maintenance personnel see the oil mark approaching the notch 13, they know that oil needs to be added without the assistance of other measuring tools.

[0056] Specifically, to facilitate the disassembly and assembly of the oil needle, the oil needle also includes an internal hexagonal connector 14. The internal hexagonal connector 14 includes a coaxially connected cover and a connecting part, with external threads on the connecting part. The oil needle body 2 is connected to the bottom of the connecting part. The oil level observation port is a stepped hole, which includes a large hole near the top of the cover body 1 and a small hole near the bottom of the cover body 1. The diameter of the large hole is larger than the diameter of the small hole, and the small hole has internal threads. The internal hexagonal connector 14 engages with the external threads on its connecting part and the internal threads in the small hole, allowing the oil needle body 2 to extend into the oil tank. By rotating the hexagonal connector 14, the oil needle body 2 can be easily removed to check the oil level.

[0057] Furthermore, the cross-section of the cover is larger than that of the connecting part, and a shoulder is formed at the connection between the large and small holes. The cover fits onto the shoulder, and an oil needle sealing gasket 3 is provided between the cover and the shoulder. By providing the oil needle sealing gasket 3, the sealing performance of the oil tank is improved.

[0058] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention 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 the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A coal mining machine refueling cover, characterized in that, include: The cover plate body is used to be installed at the oil tank filling port of the coal mining machine; the cover plate body is provided with an oil filling hole, the oil filling hole is provided with an oil filter assembly and an openable and closable oil cap, the oil cap is closed to the oil filling hole; When refueling the oil tank, the oil flows in through the oil filling hole, passes through the oil filter assembly to filter impurities, and finally flows into the oil tank.

2. The oil filling cover for a coal mining machine according to claim 1, characterized in that, The oil filtration assembly includes a mounting base and a filter element, the filter element being connected to the bottom of the mounting base; Mounting holes are provided on the cover plate body; The mounting base is fixed in the mounting hole, so that the filter element extends into the oil tank; The oil filling hole is located on the mounting base and is connected to the filter element.

3. The coal mining machine oil filler cover according to claim 2, characterized in that, The mounting base has a first mounting flange extending outward near its top, and a second mounting flange extending inward near its bottom surface inside the mounting hole. The first mounting flange and the second mounting flange match each other, and are connected by screws to fix the mounting base in the mounting hole.

4. The oil filling cover for a coal mining machine according to claim 3, characterized in that, The thickness of the mounting base is greater than the thickness of the cover plate body. After the mounting base is fixed in the mounting hole, a part of the mounting base extends into the oil tank. The bottom surface of the cover plate body is provided with a welding block corresponding to the position of the screw. The welding block is close to the side wall of the mounting base, and the screw extends into the welding block.

5. The oil filling cover for a coal mining machine according to claim 4, characterized in that, A mounting seat sealing ring is provided between the welding block and the side wall of the mounting seat; And / or, a filter element sealing ring is provided between the filter element and the bottom surface of the mounting base.

6. The oil filling cover for a coal mining machine according to claim 2, characterized in that, The oil injection hole is a stepped hole, which includes a large hole near the top of the mounting base and a small hole near the bottom of the mounting base. The diameter of the large hole is larger than the diameter of the small hole, and the small hole is provided with internal threads. The oil cap is a screw plug, which includes a nut and a threaded rod. The threaded rod has an external thread, which engages with the internal thread so that the screw plug covers the oil injection hole.

7. The oil filling cover for a coal mining machine according to claim 6, characterized in that, A shoulder is formed at the connection between the large hole and the small hole. The nut covers the shoulder, and a screw plug sealing gasket is provided between the nut and the shoulder.

8. The coal mining machine oil filler cover according to any one of claims 1-7, characterized in that, The cover plate body is also provided with an oil level observation port, and the oil level observation port is provided with a removable oil needle, which is inserted into the oil tank through the oil level observation port.

9. The oil filling cover for a coal mining machine according to claim 8, characterized in that, The oil needle includes an oil needle body, and the oil needle body has a notch, which is used to indicate the lower limit of oil volume.

10. The coal mining machine oil filler cover according to claim 9, characterized in that, The oil needle also includes an internal hexagon connector, which includes a cover and a connecting part that are coaxially connected, and the connecting part is provided with external threads; the oil needle body is connected to the bottom of the connecting part; The oil level observation port is a stepped hole, which includes a large hole near the top of the cover plate body and a small hole near the bottom of the cover plate body. The diameter of the large hole is larger than the diameter of the small hole, and the small hole is provided with internal threads. The internal hexagonal connector engages with the internal thread in the small hole via the external thread on its connecting part, allowing the oil needle body to extend into the oil tank.

11. The coal mining machine oil filler cover according to claim 10, characterized in that, The cross-section of the cover portion is larger than the cross-section of the connecting portion, and a shoulder is formed at the connection between the large hole and the small hole; The cover fits over the shoulder, and an oil needle sealing gasket is provided between the cover and the shoulder.

Images