A lubricating mechanism for a shearer boom

Abstract

The utility model relates to the technical field of coal mining machine provides a lubricating mechanism for coal mining machine rocker arm, the utility model discloses a coal mining machine rocker arm and bearing, one end of coal mining machine rocker arm is fixedly connected with the pivot, and the pivot is rotatably connected with the coal mining machine rocker arm through the bearing, and the outer side of bearing is installed with the lubricating assembly for the lubrication of coal mining machine rocker arm, and the lubricating assembly includes the oil storage tank, and the piston is slidably arranged in the inside of oil storage tank, and the piston bottom is fixedly connected with the piston rod, and the first oil pipe is fixedly connected at the top of oil storage tank, and the electric heating coil is installed in the piston inner chamber, and the electric heating coil heats the lubricating oil in the inside of oil storage tank when working. The utility model discloses through the setting mode when the outside is in the cold environment, improves the flowability of lubricating oil through heating, makes the bearing keep always sufficient lubrication in the operation process, prolongs the service life of bearing significantly, and the secondary wear and tear of impurity to bearing can be avoided through the filtration of lubricating oil.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining machine technology, and in particular relates to a lubrication mechanism for the rocker arm of a coal mining machine. Background Technology

[0002] The rocker arm of a coal mining machine is a mechanical structure that connects the machine body to the cutting drum. It typically consists of a rocker arm housing, bearings, and a lubrication system. It swings up and down via hydraulic or mechanical means to adjust the height of the cutting drum to accommodate different coal seam thicknesses. The rocker arm of an underground coal mining machine requires regular maintenance, which usually involves adding lubricating oil to its bearings to ensure flexible operation of the rocker arm during use.

[0003] Existing technology achieves lubrication by automatically injecting lubricating oil into the bearings. However, during the operation of the coal mining machine, when the underground environment is cold, the lubricating oil becomes less fluid at low temperatures. If the coal mining machine rocker arm is not lubricated in time, it can easily cause the rocker arm to malfunction or even be damaged. Furthermore, the metal particles generated by friction during bearing operation can cause secondary wear on the bearings, reducing the service life of the coal mining machine rocker arm. Utility Model Content

[0004] The purpose of this utility model is to provide a lubrication mechanism for the rocker arm of a coal mining machine. In order to solve the problems of the existing rocker arm of an underground coal mining machine, when the underground environment is cold, the flow of lubricating oil becomes poor, and the untimely lubrication of the rocker arm can easily cause the rocker arm to malfunction or even be damaged. In addition, the metal particles generated by friction during the operation of the bearing will cause secondary wear to the bearing, reducing the service life of the rocker arm of the coal mining machine.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a lubrication mechanism for a coal mining machine rocker arm, including a coal mining machine rocker arm and a bearing. A rotating shaft is fixedly connected to one end of the coal mining machine rocker arm, and the rotating shaft is rotatably connected to the coal mining machine rocker arm through the bearing. A lubrication assembly for lubricating the coal mining machine rocker arm is installed on the outside of the bearing. The lubrication assembly includes an oil storage tank, and a piston is slidably arranged inside the oil storage tank. A piston rod is fixedly connected to the bottom of the piston. A conical sealing cover is threadedly connected to the top of the oil storage tank. A first oil pipe is fixedly connected to the top of the conical sealing cover. One end of the first oil pipe passes through the top of the conical sealing cover and communicates with its inner cavity. An electric heating coil is installed in the inner cavity of the piston. When the electric heating coil is working, it heats the lubricating oil inside the oil storage tank.

[0006] The present invention is further configured such that: a transmission rod is fixedly connected to the periphery of the rocker arm of the coal mining machine near the rotating shaft; a connecting rod is rotatably connected to one end of the transmission rod; one end of the connecting rod is rotatably connected to the bottom end of the piston rod; the piston rod slides through the bottom of the oil storage tank; and the rotating shaft is fixedly connected to the inner ring of the bearing.

[0007] The present invention is further configured such that: a temporary storage tank is fixedly connected to the top of the oil storage tank, the bottom of the temporary storage tank penetrates through the top of the oil storage tank and communicates with its inner cavity, an oil injection pipe is fixedly connected to the top of the temporary storage tank, and a solenoid valve is installed inside the oil injection pipe.

[0008] The present invention is further configured such that: an electric heating coil is installed in the piston cavity (the electric heating coil is fixedly connected to the piston cavity through an insulating bracket), the piston rod cavity is connected to the piston cavity, the electric heating coil passes through the piston cavity and the piston rod cavity in sequence and is connected to a storage battery through a wire, and the storage battery is installed on the side wall of the piston rod through a bracket.

[0009] The present invention is further configured such that: a second oil pipe is fixedly connected to the peripheral side of the oil storage tank, one end of the second oil pipe passes through the peripheral side of the oil storage tank and communicates with its inner cavity, and the other end of the second oil pipe passes through the outer ring of the bearing and communicates with its inner cavity.

[0010] The present invention is further configured such that: a filter tank is fixedly connected to one end of the first oil pipe, the filter tank has an opening on its circumferential side that communicates with one end of the first oil pipe, a third oil pipe is fixedly connected to the center position of the top of the filter tank, one end of the third oil pipe passes through the outer ring of the bearing and communicates with its inner cavity, and a filter element is installed at the center position inside the filter tank.

[0011] The present invention is further configured such that: a one-way valve is installed in the first oil pipe near the inside of the oil storage tank, the one-way valve being used to allow only lubricating oil to flow into the oil storage tank.

[0012] This utility model has the following beneficial effects:

[0013] This invention utilizes a solenoid valve to pour lubricating oil from the injection pipe into the storage tank (where the piston is in the conical part). The lubricating oil, under gravity, flows through the second oil pipe to fill the bearing cavity before the solenoid valve closes. During operation, the rocker arm rotates, driving the transmission rod and connecting rod, causing the piston to slide. As the piston moves down to the non-conical part, the oil below is forced into the bearing. The lubricating oil in the bearing is filtered through the third oil pipe and returns to the storage tank. When the piston rises, the solenoid valve opens, forcing the oil above into a temporary storage tank. When the piston reaches the conical sealing cap, oil flows into the bottom of the storage tank, and the solenoid valve closes again. This process repeats, providing automatic, real-time lubrication for the rocker arm of the coal mining machine. The rotation of the rocker arm serves as the power source, driving the piston reciprocating through the transmission rod and connecting rod mechanism. This design ensures the bearing remains adequately lubricated during operation, reducing dry friction caused by insufficient oil and significantly extending the bearing's service life.

[0014] This invention allows lubricating oil to flow from the bearing, pass through a third oil pipe into a filter element for filtration, and then flow back to the oil storage tank through a first oil pipe. The filtration process removes impurities such as metal particles and coal dust generated by wear, maintains the cleanliness of the lubricating oil, avoids secondary wear on the bearing caused by impurities, and further extends the equipment maintenance cycle.

[0015] This invention installs an electric heating coil inside the piston cavity. When the external environment is cold, the lubricating oil's fluidity decreases. The electric heating coil heats the piston, which in turn heats the lubricating oil inside the oil reservoir, improving its fluidity and thus enhancing the lubrication effect.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the lubrication mechanism used in the rocker arm of a coal mining machine.

[0019] Figure 2 This is a schematic diagram of the connection structure between the bearing and the shaft;

[0020] Figure 3 for Figure 2 Enlarged view of point A;

[0021] Figure 4 for Figure 1 Cross-sectional view of the structure at point CC;

[0022] Figure 5 for Figure 4 Schematic diagram of the structure after the piston rod is pulled up;

[0023] Figure 6 for Figure 5 Enlarged view of point B;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Coal mining machine rocker arm; 2. Bearing; 3. Shaft; 4. Lubrication assembly; 401. Oil storage tank; 402. Piston; 403. Piston rod; 404. First oil pipe; 405. Second oil pipe; 406. Filter tank; 407. Third oil pipe; 408. Filter element; 409. Check valve; 410. Conical sealing cap; 5. Drive rod; 6. Connecting rod; 7. Temporary storage tank; 8. Oil injection pipe; 9. Solenoid valve; 10. Electric heating coil; 11. Storage battery. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-6 This utility model relates to a lubrication mechanism for a rocker arm of a coal mining machine, comprising a rocker arm 1 and a bearing 2. The outer ring of the bearing 2 is fixedly connected to the body of the coal mining machine. The body of the coal mining machine is connected to one end of the rocker arm 1 via a hydraulic cylinder. A rotating shaft 3 is fixedly connected to one end of the rocker arm 1, and the rotating shaft 3 is rotatably connected to the rocker arm 1 via the bearing 2. A lubrication assembly 4 for lubricating the rocker arm 1 is installed on the outer side of the bearing 2. The lubrication assembly 4 is fixedly connected to the body of the coal mining machine. The lubrication assembly 4 includes an oil storage tank 401, and a piston 402 is slidably disposed inside the oil storage tank 401. A rubber ring is fixedly connected to the periphery of the piston 402 for contact with the oil storage tank during movement. The inner wall of the non-conical part of 401 is tightly fitted. The piston rod 403 is fixedly connected to the bottom of the piston 402. The top of the oil storage tank is threadedly connected to a conical sealing cap 410. The conical sealing cap 410 and the oil storage tank 401 are connected by threads for easy disassembly and maintenance. The top of the conical sealing cap 410 is fixedly connected to a first oil pipe 404. One end of the first oil pipe 404 passes through the top of the oil storage tank 401 and communicates with its inner cavity. The circumferential side of the oil storage tank 401 is fixedly connected to a second oil pipe 405. One end of the second oil pipe 405 passes through the circumferential side of the oil storage tank 401 and communicates with its inner cavity. The other end of the second oil pipe 405 passes through the outer ring of the bearing 2 and communicates with its inner cavity.

[0030] In this embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a transmission rod 5 is fixedly connected to the periphery of the rocker arm 1 near the rotating shaft 3. One end of the transmission rod 5 is rotatably connected to a connecting rod 6. One end of the connecting rod 6 is rotatably connected to the bottom end of the piston rod 403. The piston rod 403 slides through the bottom of the oil storage tank 401. A rubber ring is fixedly connected to the opening at the bottom of the oil storage tank 401 to play a sealing role. The rotating shaft 3 is fixedly connected to the inner ring of the bearing 2.

[0031] In this embodiment of the present invention, such as Figure 3 As shown, a temporary storage tank 7 is fixedly connected to the top of the oil storage tank 401. The temporary storage tank 7 is made of glass to facilitate viewing of the oil level. The bottom of the temporary storage tank 7 passes through the top of the oil storage tank 401 and communicates with its inner cavity. An oil injection pipe 8 is fixedly connected to the top of the temporary storage tank 7. A solenoid valve 9 is installed inside the oil injection pipe 8. Lubricating oil is injected into the oil storage tank 401 through the oil injection pipe 8.

[0032] In this embodiment of the present invention, such as Figure 2 and Figure 6 As shown, an electric heating coil 10 is installed in the inner cavity of piston 402. The electric heating coil 10 is fixedly connected to the inner cavity of piston 402 through an insulating bracket. The inner cavity of piston rod 403 is connected to the inner cavity of piston 402. The electric heating coil 10 passes through the inner cavity of piston 402 and the inner cavity of piston rod 403 in sequence and is connected to a storage battery 11 through a wire. The storage battery 11 is installed on the side wall of piston rod 403 through a bracket. The storage battery 11 is installed through the bracket to facilitate installation and removal when there is no power.

[0033] In this embodiment of the present invention, such as Figure 1 and Figure 4 As shown, a filter canister 406 is fixedly connected to one end of the first oil pipe 404. An opening on the circumferential side of the filter canister 406 is connected to one end of the first oil pipe 404. A third oil pipe 407 is fixedly connected to the center of the top of the filter canister 406. One end of the third oil pipe 407 passes through the outer ring of the bearing 2 and is connected to its inner cavity. A filter element 408 is installed at the center of the inside of the filter canister 406. The lubricating oil in the inner cavity of the bearing 2 flows into the filter element 408 through the third oil pipe 407. After being filtered by the filter element 408, the oil flows into the third oil pipe 407 through the opening on the circumferential side of the filter canister 406.

[0034] In this embodiment of the present invention, such as Figure 1 and Figure 3 As shown, a one-way valve 409 is installed in the first oil pipe 404 near the inside of the oil storage tank 401. The one-way valve 409 is used to allow only lubricating oil to flow into the oil storage tank 401.

[0035] The working principle of this embodiment is as follows: During operation, firstly, the solenoid valve 9 is opened, and then lubricating oil is poured into the oil storage tank 401 from the oil injection pipe 8. At this time, the piston 402 is located at the conical sealing cap 410. The lubricating oil in the oil storage tank 401 flows into the inner cavity of the bearing 2 through the second oil pipe 405 under its own gravity and fills the inner cavity of the bearing 2. Then, the solenoid valve 9 is closed. Because the rocker arm 1 of the coal mining machine is fixedly connected to the circumference of the shaft 3, and one end of the transmission rod 5 is rotatably connected to the connecting rod 6, the connecting rod... One end of rod 6 is rotatably connected to the bottom end of piston rod 403. When the coal mining machine is running, the rotation of the rocker arm 1 of the coal mining machine will drive the transmission rod 5 to rotate, which in turn drives the connecting rod 6 to rotate, thereby causing piston 402 to slide inside oil storage tank 401. When piston 402 moves downward to oil storage tank 401, piston 402 is tightly fitted with the inner wall of oil storage tank 401. The lubricating oil below piston 402 will be pressed into the inner cavity of bearing 2 through the second oil pipe 405. At the same time, the lubricating oil in the inner cavity of bearing 2 will be pressed into the inner cavity of bearing 2 through the third oil pipe. 407 flows into filter element 408, and after filtration, it flows back from the bottom of filter tank 406 through first oil pipe 404 to oil storage tank 401, achieving real-time lubrication. When piston 402 moves upward, solenoid valve 9 opens. Because a one-way valve 409 is installed near the inside of oil storage tank 401 in first oil pipe 404, the one-way valve 409 is used to allow lubricating oil to flow into oil storage tank 401 only. The lubricating oil above piston 402 is forced into temporary storage tank 7. When piston 402 rises to the conical sealing cap... At position 410, lubricating oil flows into the lower part of oil storage tank 401 through the gap between piston 402 and the inner wall of oil storage tank 401, and the solenoid valve 9 is closed. When the rocker arm 1 of the coal mining machine continues to rotate, the lubrication operation is repeated. When the outside environment is cold, the fluidity of the lubricating oil decreases at low temperature. Power is provided by the battery installed on the side wall of piston rod 403, and the electric heating coil 10 is energized, which heats the piston, thereby heating the lubricating oil inside the oil storage tank, improving its fluidity, and thus improving the lubrication effect.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lubrication mechanism for a rocker arm of a coal mining machine, comprising a rocker arm (1) and a bearing (2), wherein a rotating shaft (3) is fixedly connected to one end of the rocker arm (1), and the rotating shaft (3) is rotatably connected to the rocker arm (1) via the bearing (2), characterized in that: The bearing (2) is equipped with a lubrication assembly (4) for lubricating the rocker arm (1) of the coal mining machine. The lubrication assembly (4) includes an oil storage tank (401). A piston (402) is slidably arranged inside the oil storage tank (401). A piston rod (403) is fixedly connected to the bottom of the piston (402). A conical sealing cover (410) is threadedly connected to the top of the oil storage tank. A first oil pipe (404) is fixedly connected to the top of the conical sealing cover (410). One end of the first oil pipe (404) passes through the top of the conical sealing cover (410) and communicates with its inner cavity. An electric heating coil (10) is installed in the inner cavity of the piston (402). When the electric heating coil (10) is working, it heats the lubricating oil inside the oil storage tank (401).

2. The lubrication mechanism for a rocker arm of a coal mining machine according to claim 1, characterized in that: A transmission rod (5) is fixedly connected to the circumference of the rocker arm (1) of the coal mining machine near the rotating shaft (3). A connecting rod (6) is rotatably connected to one end of the transmission rod (5). One end of the connecting rod (6) is rotatably connected to the bottom end of the piston rod (403). The piston rod (403) slides through the bottom of the oil storage tank (401). The rotating shaft (3) is fixedly connected to the inner ring of the bearing (2).

3. The lubrication mechanism for a rocker arm of a coal mining machine according to claim 2, characterized in that: The top of the oil storage tank (401) is fixedly connected to a temporary storage tank (7). The bottom of the temporary storage tank (7) passes through the top of the oil storage tank (401) and communicates with its inner cavity. The top of the temporary storage tank (7) is fixedly connected to an oil injection pipe (8). A solenoid valve (9) is installed inside the oil injection pipe (8).

4. A lubrication mechanism for a rocker arm of a coal mining machine according to claim 3, characterized in that: The electric heating coil (10) is fixedly connected to the inner cavity of the piston (402) through an insulating bracket. The inner cavity of the piston rod (403) is connected to the inner cavity of the piston (402). The electric heating coil (10) passes through the inner cavity of the piston (402) and the inner cavity of the piston rod (403) in sequence and is connected to the battery (11) through a wire. The battery (11) is installed on the side wall of the piston rod (403) through a bracket.

5. A lubrication mechanism for a rocker arm of a coal mining machine according to claim 4, characterized in that: The oil storage tank (401) is fixedly connected to a second oil pipe (405) on its periphery. One end of the second oil pipe (405) passes through the periphery of the oil storage tank (401) and communicates with its inner cavity. The other end of the second oil pipe (405) passes through the outer ring of the bearing (2) and communicates with its inner cavity.

6. A lubrication mechanism for a rocker arm of a coal mining machine according to claim 5, characterized in that: A filter canister (406) is fixedly connected to one end of the first oil pipe (404). The filter canister (406) has an opening on its circumferential side that communicates with one end of the first oil pipe (404). A third oil pipe (407) is fixedly connected to the center of the top of the filter canister (406). One end of the third oil pipe (407) passes through the outer ring of the bearing (2) and communicates with its inner cavity. A filter element (408) is installed at the center of the inside of the filter canister (406).

7. A lubrication mechanism for a rocker arm of a coal mining machine according to claim 6, characterized in that: The first oil pipe (404) is equipped with a one-way valve (409) near the inside of the oil storage tank (401). The one-way valve (409) is used to allow only lubricating oil to flow into the oil storage tank (401).

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