Travel mechanism of coal mining equipment, Coal mining equipment

Abstract

The application discloses a walking mechanism of a coal mining equipment and the coal mining equipment. The walking mechanism comprises a driving gear, a walking gear, a walking shell, an oil dripping box and an oil dripping needle. The walking gear is engaged with the driving gear. The walking gear and the driving gear are located in the walking shell. The oil dripping box is arranged on the walking shell and is provided with an oil outlet. The oil dripping needle is located in the walking shell and is connected with the walking shell. An oil inlet end of the oil dripping needle is communicated with the oil outlet of the oil dripping box. An oil outlet end of the oil dripping needle is directed to an engagement area of the walking gear and the driving gear. The oil dripping box is provided with the oil outlet and the oil dripping needle communicated with the oil outlet. Lubricating oil in the oil dripping box can be directly dripped to the engagement area of the walking gear and the driving gear through the oil dripping needle. The lubricating coverage range is increased and the lubricating efficiency is improved. The engagement area can directly obtain lubricating oil when the walking mechanism is in normal operation, a downward mining mode or an upward mining mode. The lubricating effect of the walking gear and the driving gear is improved.

Description

Technical Field

[0001] This invention relates to the field of gear lubrication technology, and more specifically, to a traveling mechanism for coal mining equipment and coal mining equipment. Background Technology

[0002] Currently, in related technologies, an oil drip box is installed in the traveling mechanism of the coal mining machine to lubricate the drive gears of the traveling mechanism. However, the lubricating oil in the oil drip box can only drip onto the drive gears. That is, the lubricating oil first adheres to the tooth surface of the drive gear. During the rotation of the drive gear, the lubricating oil is only transferred to the tooth surface of the traveling gear through meshing contact. Most of the lubricating oil is lost due to equipment vibration, dust washing, and airflow blowing, resulting in very little lubricating oil reaching the meshing surface of the traveling gear. It is impossible to form a continuous and stable oil film on the tooth surface, and therefore, it cannot effectively lubricate the drive gear and traveling gear. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] Therefore, the first aspect of the present invention provides a walking mechanism for coal mining equipment.

[0005] The second aspect of this invention provides a coal mining equipment.

[0006] In view of this, the present invention provides a traveling mechanism for a coal mining equipment, including a drive gear, a traveling gear, a traveling housing, an oil dripping box, and an oil dripping needle. The traveling gear meshes with the drive gear; the traveling gear and the drive gear are located within the traveling housing; the oil dripping box is disposed within the traveling housing and has an oil outlet; the oil dripping needle is located within the traveling housing and is connected to the traveling housing, with the oil inlet end of the oil dripping needle communicating with the oil outlet end of the oil dripping box, and the oil outlet end of the oil dripping needle facing the meshing area of ​​the traveling gear and the drive gear.

[0007] In this technical solution, the traveling mechanism of the coal mining equipment includes a drive gear, a traveling gear, a traveling housing, an oil drip box, and oil drip needles. The traveling mechanism is the traveling part of the coal mining machine. By arranging oil drip needles in the meshing area between the traveling gear and the drive gear, the traveling mechanism can lubricate the meshing parts of the gears during the operation of the coal mining equipment, thereby reducing gear wear.

[0008] The traveling housing contains a drive gear and a traveling gear, which mesh with the drive gear, and there is a meshing area between them. The traveling housing serves to support and protect the drive gear and the traveling gear. The drive gear and the traveling gear form a gear transmission pair within the traveling housing to drive the coal mining equipment to travel along the working face.

[0009] The oil drip box is located on the walking housing and has an oil outlet. The oil drip box is used to store lubricating oil and supply lubricating oil to the oil drip needle through the oil outlet.

[0010] The oil-drip needle is located inside the running gear housing and is connected to the running gear housing. The oil inlet of the oil-drip needle is connected to the oil outlet of the oil-drip box, and the oil outlet of the oil-drip needle faces the meshing area of ​​the running gear and the drive gear. The oil-drip needle acts as a guide, allowing lubricating oil in the oil-drip box to flow into the oil-drip needle through the oil outlet and drip onto the meshing area through the oil outlet of the oil-drip needle, thereby lubricating the drive gear and the running gear.

[0011] In other words, the oil is directly dripped into the meshing area of ​​the traveling gear and the drive gear through the oil dripping needle, allowing the traveling gear to directly receive lubricating oil. During the operation of the coal mining equipment, the meshing area of ​​the traveling gear and the drive gear can still receive direct dripping of lubricating oil, thereby forming a continuous and stable oil film on the tooth surface of the traveling gear, protecting both the drive gear and the traveling gear.

[0012] This invention, by installing an oil-drip needle on the walking housing connected to an oil-drip box and directing the oil-drip needle's outlet towards the meshing area of ​​the walking gear and the drive gear, offers a significant improvement over existing oil-drip box devices where lubricating oil can only drip onto the drive gear, initially adhering to its tooth surface. During drive gear rotation, only a small amount of lubricating oil is transferred to the walking gear tooth surface through meshing contact, with most of the lubricating oil being lost due to equipment vibration, dust erosion, and airflow. Very little lubricating oil actually reaches the meshing surface of the walking gear, failing to form a continuous and stable oil film. This invention, through the oil-drip needle, directly guides the lubricating oil to the meshing area, delivering it to the meshing surface. This ensures that the walking gear and drive gear receive lubricating oil to form an oil film, thereby reducing the wear rate of the drive gear and walking gear tooth surfaces, improving lubrication efficiency, and extending the service life of the walking gear and drive gear.

[0013] This invention, by setting an oil outlet on the oil dripping box and installing an oil dripping needle connected to the outlet, allows the lubricating oil in the dripping box to be directly dripped into the meshing area of ​​the traveling gear and the drive gear through the dripping needle, thereby increasing the lubrication coverage and improving lubrication efficiency. Whether the traveling mechanism is in normal operation or in overhead or downward mining conditions, the meshing area can directly receive lubricating oil, thus improving the lubrication effect of the traveling gear and the drive gear and reducing the frequency of equipment downtime for replacement.

[0014] In some technical solutions of the present invention, optionally, the number of oil-drip needles is multiple, and the multiple oil-drip needles are arranged circumferentially along the oil outlet.

[0015] In this technical solution, multiple oil-drip needles are arranged circumferentially along the oil outlet. These multiple needles can simultaneously deliver lubricating oil to the meshing area from different positions, ensuring that multiple points within the meshing area receive lubricating oil at the same time. This expands the coverage area of ​​the lubricating oil and improves the uniformity of lubrication. Furthermore, the circumferential arrangement of the multiple oil-drip needles ensures that, regardless of whether the coal mining equipment is inclining, whether it is in a downward, upward, or other inclined state, one or more of the multiple needles are always in a low position, continuously guiding the lubricating oil to the meshing area between the drive gear and the travel gear. This prevents a single needle from being in a high position due to the inclination of the coal mining equipment, which could prevent the lubricating oil from reaching the meshing area, thus ensuring uninterrupted lubrication under full-angle operating conditions.

[0016] In some technical solutions of the present invention, optionally, the oil dripping box is located outside the walking housing, and the oil dripping box is detachably connected to the walking housing.

[0017] In this technical solution, the oil drip box is located outside the traveling housing, and the oil drip box is detachably connected to the traveling housing. The external location of the oil drip box allows operators to perform maintenance operations such as oiling, observing oil levels, cleaning, or replacing the oil drip box from the outside of the traveling housing without disassembling the traveling housing, reducing maintenance difficulty and downtime. Simultaneously, the detachable connection makes the installation and removal of the oil drip box more convenient. When the coal mining equipment malfunctions underground, operators can directly replace it with a spare oil drip box to quickly restore lubrication, improving the maintainability of the equipment.

[0018] In some technical solutions of the present invention, the oil dripping needle may optionally be welded to the walking housing.

[0019] In this technical solution, the oil dripping needle is welded to the traveling shell. When the coal mining equipment is operating underground, the traveling mechanism is subjected to severe vibration and impact loads for a long time. The welded connection has the characteristics of high connection strength and good vibration resistance, which can ensure that the oil dripping needle will not loosen or shift under strong vibration conditions. This ensures that the spatial position of the oil outlet end of the oil dripping needle relative to the meshing area remains unchanged, avoiding the situation where the oil outlet end deviates from the meshing area due to the displacement of the oil dripping needle, and the lubricating oil cannot accurately reach the meshing area, thus ensuring the continuity of lubrication.

[0020] In some technical solutions of the present invention, optionally, the outer side of the walking housing has a mounting groove, the mounting groove is recessed into the walking housing, the oil drip box is disposed in the mounting groove and is limited and matched with the mounting groove.

[0021] In this technical solution, the outer surface of the traveling housing has a mounting groove that is recessed into the traveling housing. The oil dripping box is disposed within the mounting groove, and the oil dripping box is fitted with the mounting groove in a limiting manner. The recessed mounting groove forms a receiving space within the traveling housing, and the oil dripping box is embedded in this space. The groove wall of the mounting groove provides circumferential restraint to the oil dripping box, preventing it from rotating or shifting when the equipment vibrates or tilts, thus ensuring the accuracy of the oil dripping box's installation position on the traveling housing. Simultaneously, the recessed structure of the mounting groove ensures that the oil dripping box is at least partially embedded within the traveling housing, reducing the height of the oil dripping box protruding from the outer side of the traveling housing. This lowers the risk of interference between the traveling mechanism and other components in the confined space downhole, and improves the compactness of the traveling mechanism.

[0022] In some technical solutions of the present invention, optionally, the bottom of the mounting groove has a limiting groove communicating with the walking housing, the oil dripping needle passes through the limiting groove, at least part of the oil dripping needle is located in the limiting groove, and the end of the oil dripping needle away from the meshing area is connected to the limiting groove.

[0023] In this technical solution, the bottom of the mounting groove has a limiting groove connecting to the inside of the walking housing. The oil-drip needle passes through the limiting groove, with at least a portion of the needle located within it. The end of the needle furthest from the engagement area is connected to the limiting groove. The limiting groove extends through the wall thickness of the walking housing to connect its outer and inner sides. The wall of the limiting groove constrains the needle, limiting it to a preset mounting posture. The end of the needle furthest from the engagement area is connected to the limiting groove, thus holding the needle in a preset position on the walking housing. The mounting groove and the limiting groove together form a double-layer positioning structure for the oil-drip box and the oil-drip needle, ensuring the installation accuracy between the oil outlet of the oil-drip box and the oil inlet of the needle, as well as the relative positional accuracy between the oil outlet of the needle and the engagement area.

[0024] In some technical solutions of the present invention, the walking mechanism of the coal mining equipment may optionally include an adjusting component, which is disposed in the oil dripping box and cooperates with the oil outlet to adjust the flow rate of lubricating oil from the oil dripping box to the oil dripping needle.

[0025] In this technical solution, the traveling mechanism also includes an adjusting component, which is located in the oil dripping box and cooperates with the oil outlet to adjust the flow rate of lubricating oil from the dripping box to the dripping needle. The adjusting component controls the flow rate of lubricating oil from the dripping box to the dripping needle. Operators can adaptively adjust the dripping flow rate of the lubricating oil according to different operating conditions of the coal mining equipment, ensuring sufficient lubrication while avoiding oil waste, achieving on-demand lubrication, and reducing the cost of lubricating oil use and maintenance.

[0026] In some technical solutions of the present invention, the oil dripping box is optionally provided with an oil inlet, and the traveling mechanism of the coal mining equipment is further provided with an oil plug, which is threadedly connected to the oil inlet and is used to seal the oil inlet.

[0027] In this technical solution, the oil dripping box has an oil filling port, and the traveling mechanism also includes an oil filling plug. The oil filling plug is threadedly connected to the oil filling port and is used to seal the oil filling port. The oil filling port is located in the oil dripping box, allowing operators to add lubricating oil to the box. After oil filling is completed, the oil filling plug and the oil filling port are sealed by a threaded connection. This threaded connection provides stable sealing and self-locking properties, preventing impurities such as downhole dust, coal slag, and water vapor from entering the oil dripping box through the oil filling port and contaminating the lubricating oil. It also prevents lubricating oil from overflowing from the oil filling port when the equipment tilts or vibrates, ensuring the cleanliness of the lubricating oil and the sealing of the oil dripping box.

[0028] In some technical solutions of the present invention, optionally, the distance between the oil outlet end of the oil-drip needle and the engagement area is greater than or equal to 3 cm and less than or equal to 5 cm.

[0029] In this technical solution, the distance between the oil outlet of the oil-drip needle and the meshing area is greater than or equal to 3 cm and less than or equal to 5 cm. By controlling the distance between the oil outlet and the meshing area within the range of 3 to 5 cm, sufficient safety clearance is ensured between the oil outlet of the oil-drip needle and the gear, preventing interference and collision with the gear tooth surface during high-speed gear rotation, which could damage the oil-drip needle or the gear. Simultaneously, the path of the lubricating oil dripping from the outlet to the meshing area is shortened, reducing the possibility of deviation due to airflow or centrifugal force during lubricating oil delivery. This ensures that the lubricating oil accurately reaches the meshing area, improving the precision and reliability of lubrication. If the distance between the oil outlet of the oil-drip needle and the meshing area is less than 3 cm, the oil outlet of the oil-drip needle is prone to interference with the gear tooth surface; if the distance is greater than 5 cm, the lubricating oil is easily affected by external environmental interference during dripping, deviating from the target position and resulting in reduced lubrication efficiency.

[0030] A second aspect of the present invention provides a coal mining equipment, including the traveling mechanism of the coal mining equipment in any of the above technical solutions.

[0031] In this technical solution, since the coal mining equipment has the walking mechanism of the coal mining equipment in any of the above technical solutions, the coal mining equipment has all the beneficial effects of the walking mechanism of the coal mining equipment in any of the above technical solutions, which will not be elaborated here.

[0032] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0034] Figure 1 This is a schematic diagram of the walking mechanism of a coal mining equipment according to an embodiment of the present invention;

[0035] Figure 2 for Figure 1 The diagram shows a partial enlarged view of the traveling mechanism of a coal mining equipment according to an embodiment of the present invention at point A.

[0036] Figure 3 This is a schematic diagram of the structure of an oil dripping box according to an embodiment of the present invention.

[0037] In the attached figures, the following labels are used:

[0038] 100 Coal mining equipment walking mechanism, 110 Drive gear, 120 Walking gear, 122 Meshing area, 130 Walking housing, 132 Mounting groove, 134 Limiting groove, 140 Oil drip box, 142 Oil outlet, 144 Oil injection port, 150 Oil drip needle, 160 Adjusting component, 170 Guide slipper, 180 Oil injection plug. Detailed Implementation

[0039] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0041] The following reference Figures 1 to 3 The following describes a walking mechanism 100 and a coal mining device according to some embodiments of the present invention.

[0042] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a traveling mechanism 100 for a coal mining equipment, including a drive gear 110, a traveling gear 120, a traveling housing 130, an oil dripping box 140, and an oil dripping needle 150. The traveling gear 120 meshes with the drive gear 110; the traveling gear 120 and the drive gear 110 are located within the traveling housing 130; the oil dripping box 140 is disposed within the traveling housing 130 and has an oil outlet 142; the oil dripping needle 150 is located within the traveling housing 130 and is connected to the traveling housing 130, with the oil inlet end of the oil dripping needle 150 communicating with the oil outlet 142 of the oil dripping box 140, and the oil outlet end of the oil dripping needle 150 facing the meshing area 122 of the traveling gear 120 and the drive gear 110.

[0043] In this embodiment, the traveling mechanism 100 of the coal mining equipment includes a drive gear 110, a traveling gear 120, a traveling housing 130, an oil drip box 140, and an oil drip needle 150. The traveling mechanism is the traveling part of the coal mining machine. By arranging the oil drip needle 150 in the meshing area 122 between the traveling gear 120 and the drive gear 110, the traveling mechanism can lubricate the meshing parts of the gears during the operation of the coal mining equipment, thereby reducing gear wear.

[0044] The traveling housing 130 houses a drive gear 110 and a traveling gear 120. The traveling gear 120 meshes with the drive gear 110, and there is a meshing area 122 between the traveling gear 120 and the drive gear 110. The traveling housing 130 is used to support and protect the drive gear 110 and the traveling gear 120. The drive gear 110 and the traveling gear 120 form a gear transmission pair within the traveling housing 130 to drive the coal mining equipment to travel along the working face.

[0045] An oil drip box 140 is disposed on the walking housing 130, and the oil drip box 140 has an oil outlet 142. The oil drip box 140 is used to store lubricating oil and supply lubricating oil to the oil drip needle 150 through the oil outlet 142.

[0046] The oil drip needle 150 is located inside the travel housing 130 and connected to the travel housing 130. The oil inlet of the oil drip needle 150 is connected to the oil outlet 142 of the oil drip box 140, and the oil outlet of the oil drip needle 150 faces the meshing area 122 of the travel gear 120 and the drive gear 110. The oil drip needle 150 acts as a guide, allowing the lubricating oil in the oil drip box 140 to flow into the oil drip needle 150 through the oil outlet 142 and drip onto the meshing area 122 through the oil outlet of the oil drip needle 150, thereby lubricating the drive gear 110 and the travel gear 120.

[0047] In other words, the oil is directly dripped into the meshing area 122 of the traveling gear 120 and the drive gear 110 through the oil dripping needle 150, allowing the traveling gear 120 to directly receive lubricating oil. During operation of the coal mining equipment, the meshing area 122 of the traveling gear 120 and the drive gear 110 continues to receive direct dripping of lubricating oil, thus forming a continuous and stable oil film on the tooth surface of the traveling gear 120, protecting both the drive gear 110 and the traveling gear 120.

[0048] This invention, by setting an oil-drip needle 150 on the walking housing 130 and communicating it with an oil-drip box 140, and directing the oil outlet of the oil-drip needle 150 toward the meshing area 122 of the walking gear 120 and the drive gear 110, achieves a significant improvement over the existing oil-drip box device where "the lubricating oil can only drip onto the drive gear, and the lubricating oil only adheres to the tooth surface of the drive gear. During the rotation of the drive gear, only a very small amount of lubricating oil can be transferred to the tooth surface of the walking gear through meshing contact. Most of the lubricating oil will be lost due to equipment vibration, dust washing, and airflow blowing. Very little lubricating oil can actually reach the meshing surface of the walking gear, and it is impossible to form a continuous and stable oil film on the tooth surface." This invention, by using the oil-drip needle 150 to directly guide the lubricating oil to the meshing area 122, can deliver the lubricating oil to the meshing surface, allowing the walking gear 120 and the drive gear 110 to obtain lubricating oil and form an oil film. This reduces the wear rate of the tooth surfaces of the drive gear 110 and the walking gear 120, improves lubrication efficiency, and extends the service life of the walking gear 120 and the drive gear 110.

[0049] This invention provides an oil outlet 142 on the oil dripping box 140 and an oil dripping needle 150 communicating with the oil outlet 142. This allows the lubricating oil in the oil dripping box 140 to be directly dripped into the meshing area 122 of the traveling gear 120 and the drive gear 110 through the oil dripping needle 150, thereby increasing the lubrication coverage and improving lubrication efficiency. Whether the traveling mechanism is operating normally or in a downward or upward mining condition, the meshing area 122 can directly receive lubricating oil, thus improving the lubrication effect of the traveling gear 120 and the drive gear 110 and reducing the frequency of equipment downtime for replacement.

[0050] Specifically, the coal mining equipment is a coal mining machine.

[0051] Specifically, the meshing area 122 refers to the area where the tooth surfaces of the drive gear 110 and the travel gear 120 contact each other when they mesh. The dripping lubricating oil, after falling into the meshing area 122, can land on the tooth surface of the drive gear 110, the tooth surface of the travel gear 120, or in the gap between the two gears.

[0052] Specifically, the oil drip box 140 and the oil drip needle 150 constitute the oil dripping device of the walking mechanism 100 of the coal mining equipment. The oil dripping device is a precision lubrication system customized for the lubrication pain points of the walking part of the coal mining equipment. It is integrated and installed on the walking housing 130 and is highly compatible with the walking drive system. It can directly replace the existing lubrication device without large-scale modification of the main body of the coal mining equipment and is compatible with the walking part structure of different models of coal mining equipment.

[0053] Specifically, by employing the oil dripping box device of the present invention, both the traveling gear 120 and the drive gear 110 can obtain lubricating oil. During the coal mining equipment's downward and upward mining operations, the traveling gear 120 and the drive gear 110 can obtain lubricating oil, forming an oil film that provides excellent protection for the drive gear 110 and the traveling gear 120.

[0054] Specifically, the lubricating oil is precisely dripped through the oil-drip needle 150, eliminating the "splash lubrication," "open oil groove lubrication," or "manual lubrication with a centralized oil gun" methods found in related technologies. Instead, the oil-drip needle 150 guides the lubricating oil directly onto the meshing contact surfaces of the traveling gear 120 and the drive gear 110. The fine-diameter guiding design of the oil-drip needle 150 delivers the lubricating oil to the meshing surface in a uniform and continuous droplet form, significantly improving lubrication efficiency and reducing oil waste. This invention ensures that the traveling gear 120 and the drive gear 110 receive a lubricating oil film, preventing the traveling gear 120 from being in a "semi-dry friction" state for extended periods. This reduces the risk of tooth surface wear, pitting, and fatigue spalling, and lowers the probability of malfunctions in the traveling mechanism.

[0055] In some embodiments of the present invention, optionally, such as Figure 1 , Figure 2 and Figure 3 As shown, there are multiple oil-drip needles 150, which are arranged circumferentially along the oil outlet 142.

[0056] In this embodiment, there are multiple oil-drip needles 150 arranged circumferentially along the oil outlet 142. These multiple oil-drip needles 150 can simultaneously deliver lubricating oil to the meshing area 122 from different positions, allowing multiple points in the meshing area 122 to receive lubricating oil simultaneously, thereby expanding the coverage area of ​​the lubricating oil and improving the uniformity of lubrication. Simultaneously, the circumferential arrangement of the multiple oil-drip needles 150 ensures that, regardless of the direction of inclination of the coal mining equipment during downward, upward, or other inclined mining operations, one or more of the multiple oil-drip needles 150 are always in a low position, continuously guiding lubricating oil to the meshing area 122 between the drive gear 110 and the travel gear 120. This prevents a single oil-drip needle 150 from being in a high position due to the inclination of the coal mining equipment, thus ensuring uninterrupted lubrication under full-angle operating conditions.

[0057] Specifically, in Figure 3 In the diagram, C represents the circumferential direction of the oil outlet 142.

[0058] Specifically, multiple oil-drip needles 150 are arranged at circumferential intervals along the oil outlet 142.

[0059] Specifically, there are four oil-drip needles 150. The four oil-drip needles 150 are integrally welded to the walking housing 130.

[0060] Specifically, there are 6 oil-drip needles of grade 150.

[0061] Specifically, there are 8 oil-drip needles of grade 150.

[0062] Specifically, the oil dripping needle 150 is directly welded and fixed to the traveling housing 130, rather than using detachable connection methods such as bolts or clips, forming a rigid integral structure of "housing-oil dripping needle 150". This design completely avoids the problems of loosening, displacement, and falling off of the oil dripping needle 150 under complex downhole conditions (such as strong equipment vibration, steep-angle downhill / uphill mining, and long-term heavy-load travel), ensuring that the lubrication point always maintains a precise correspondence with the meshing surfaces of the drive gear 110 and the traveling gear 120, and preventing lubrication failure due to component displacement. Furthermore, in conjunction with the adjustable flow rate oil dripping box 140, a closed-loop lubrication system with adjustable flow rate and fixed points is formed, achieving on-demand, fixed-point, and quantitative lubrication.

[0063] Specifically, by using multiple oil-drip needles 150, the travel gear 120 can be prevented from being in a dry friction state under inclined conditions, thereby reducing the wear rate of the travel gear 120 and avoiding failures such as tooth surface burning and tooth breakage.

[0064] In some embodiments of the present invention, optionally, such as Figure 1 and Figure 2 As shown, the oil drip box 140 is located outside the walking housing 130, and the oil drip box 140 is detachably connected to the walking housing 130.

[0065] In this embodiment, the oil drip box 140 is located outside the traveling housing 130, and the oil drip box 140 is detachably connected to the traveling housing 130. The oil drip box 140's external location allows operators to perform maintenance operations such as oiling, observing oil levels, cleaning, or replacing the oil drip box 140 from outside the traveling housing 130 without disassembling the traveling housing 130, reducing maintenance difficulty and downtime. Furthermore, the detachable connection makes the installation and removal of the oil drip box 140 more convenient. When the coal mining equipment malfunctions underground, operators can directly replace it with a spare oil drip box 140 to quickly restore lubrication, improving the maintainability of the equipment.

[0066] Specifically, the oil drip box 140 is connected to the walking housing 130 by bolts, which facilitates the disassembly and assembly of the oil drip box 140.

[0067] In some embodiments of the present invention, the oil-drip needle 150 is optionally welded to the walking housing 130.

[0068] In this embodiment, the oil dripping needle 150 is welded to the traveling housing 130. When the coal mining equipment is operating underground, the traveling mechanism is subjected to severe vibration and impact loads for a long time. The welded connection has the characteristics of high connection strength and good vibration resistance, which can ensure that the oil dripping needle 150 will not loosen or shift under strong vibration conditions. This ensures that the spatial position of the oil outlet end of the oil dripping needle 150 relative to the meshing area 122 remains unchanged, avoiding the situation where the oil outlet end deviates from the meshing area 122 due to the displacement of the oil dripping needle 150, and the lubricating oil cannot accurately reach the meshing area 122, thus ensuring the continuity of lubrication.

[0069] Specifically, the oil-drip needle 150 has a base, and the base of the oil-drip needle 150 is welded to the walking housing 130.

[0070] Specifically, the installation of the oil drip needle 150 is crucial for stable operation. The oil drip needle 150 is fixed to the traveling housing 130 using a direct welding process. First, based on the meshing positions of the drive gear 110 and the traveling gear 120, the installation point of the oil drip needle 150 is located to ensure that the vertical distance and angle between the oil outlet 142 and the meshing surface of the gear teeth are perfectly matched. The base of the oil drip needle 150 is welded to the traveling housing 130 as a whole using a full welding process, eliminating the risk of component loosening or displacement. Even under conditions of strong vibration and large inclination angle in coal mining equipment, the lubrication point remains unchanged. After welding, the oil drip needle 150 is straightened and sealed to prevent the oil outlet 142 from shifting due to welding deformation, and to prevent welding residue from clogging the oil passage.

[0071] In some embodiments of the present invention, optionally, such as Figure 2 As shown, the outer side of the walking housing 130 has a mounting groove 132, which is recessed into the walking housing 130. The oil drip box 140 is disposed in the mounting groove 132 and is limited to fit the mounting groove 132.

[0072] In this embodiment, the traveling housing 130 has a mounting groove 132 on its exterior. The mounting groove 132 is recessed into the traveling housing 130, and the dripping box 140 is disposed within the mounting groove 132, with the dripping box 140 and the mounting groove 132 providing a limiting fit. The recess of the mounting groove 132 into the traveling housing 130 forms a receiving space, within which the dripping box 140 is embedded. The groove wall of the mounting groove 132 provides circumferential limiting for the dripping box 140, preventing it from rotating or shifting when the equipment vibrates or tilts, thus ensuring the accuracy of the dripping box 140's installation position on the traveling housing 130. Simultaneously, the recessed structure of the mounting groove 132 ensures that the dripping box 140 is at least partially embedded within the traveling housing 130, reducing the height of the dripping box 140 protruding from the outside of the traveling housing 130. This reduces the risk of interference between the traveling mechanism and other components in the confined space downhole, improving the compactness of the traveling mechanism.

[0073] In some embodiments of the present invention, optionally, such as Figure 2 As shown, the bottom of the mounting groove 132 has a limiting groove 134 that communicates with the walking housing 130. The oil-drip needle 150 passes through the limiting groove 134, and at least part of the oil-drip needle 150 is located in the limiting groove 134. One end of the oil-drip needle 150 away from the meshing area 122 is connected to the limiting groove 134.

[0074] In this embodiment, the bottom of the mounting groove 132 has a limiting groove 134 communicating with the inside of the walking housing 130. The oil-drip needle 150 passes through the limiting groove 134, with at least a portion of the oil-drip needle 150 located within the limiting groove 134. One end of the oil-drip needle 150 away from the engagement area 122 is connected to the limiting groove 134. The limiting groove 134 penetrates the wall thickness of the walking housing 130 to connect the outer and inner sides of the walking housing 130. The oil-drip needle 150 passes through the limiting groove 134, and the groove wall of the limiting groove 134 constrains the oil-drip needle 150, limiting it to a preset mounting posture. The end of the oil-drip needle 150 away from the engagement area 122 is connected to the limiting groove 134, thereby holding the oil-drip needle 150 in a preset position on the walking housing 130. The mounting groove 132 and the limiting groove 134 together form a double-layer positioning structure for the oil dripping box 140 and the oil dripping needle 150, which ensures the installation accuracy between the oil outlet 142 of the oil dripping box 140 and the oil inlet end of the oil dripping needle 150, and also ensures the relative position accuracy between the oil outlet end of the oil dripping needle 150 and the meshing area 122.

[0075] In some embodiments of the present invention, optionally, such as Figure 1 and Figure 2 As shown, the traveling mechanism 100 of the coal mining equipment also includes an adjusting component 160, which is disposed in the oil dripping box 140. The adjusting component 160 cooperates with the oil outlet 142 to adjust the flow rate of lubricating oil from the oil dripping box 140 to the oil dripping needle 150.

[0076] In this embodiment, the traveling mechanism further includes an adjusting component 160, which is disposed in the oil dripping box 140 and cooperates with the oil outlet 142 to adjust the flow rate of lubricating oil from the oil dripping box 140 to the oil dripping needle 150. The adjusting component 160 is used to control the flow rate of lubricating oil from the oil dripping box 140 to the oil dripping needle 150. The operator can adaptively adjust the dripping flow rate of the lubricating oil according to different working conditions of the coal mining equipment, ensuring sufficient lubrication while avoiding oil waste, realizing on-demand lubrication, and reducing the usage and maintenance costs of lubricating oil.

[0077] Specifically, the adjusting component 160 is an adjuster.

[0078] Specifically, the adjusting component 160 includes an operating part, an adjusting part, and a connecting part. The connecting part connects the operating part and the adjusting part, and the adjusting part cooperates with the oil outlet 142. The operating part receives the adjusting operation from the operator, and the connecting part transmits the adjusting action of the operating part to the adjusting part. The adjusting part adjusts the lubricating oil flow rate by changing the effective flow cross-sectional area of ​​the oil outlet 142. By operating the operating part, and sequentially through the connecting part and the adjusting part, the operator can control the opening size of the oil outlet 142, thereby controlling the lubricating oil flow rate.

[0079] Specifically, the oil dripping device of the present invention adopts a modular design of "oil storage-volume control-flow guidance-lubrication". The components work together to form a closed-loop lubrication process, which solves the problem of "insufficient lubrication of the walking gear 120 and lubrication failure in tilting conditions" in the traditional lubrication method, and realizes dual-point adjustable and precise lubrication of the drive gear 110 and the walking gear 120.

[0080] In some embodiments of the present invention, optionally, such as Figure 1 and Figure 2 As shown, the oil drip box 140 has an oil inlet 144, and the walking mechanism 100 of the coal mining equipment also includes an oil plug 180, which is threadedly connected to the oil inlet 144. The oil plug 180 is used to seal the oil inlet 144.

[0081] In this embodiment, the oil dripping box 140 has an oil filling port 144, and the traveling mechanism also includes an oil filling plug 180. The oil filling plug 180 is threadedly connected to the oil filling port 144, and the oil filling plug 180 is used to seal the oil filling port 144. The oil filling port 144 is located in the oil dripping box 140, and the operator can add lubricating oil to the oil dripping box 140 through the oil filling port 144. After the oil filling is completed, the oil filling plug 180 and the oil filling port 144 are sealed by a threaded connection. The threaded connection has stable sealing and self-locking properties, which can prevent impurities such as downhole dust, coal slag, and water vapor from entering the oil dripping box 140 through the oil filling port 144 and contaminating the lubricating oil. It also prevents the lubricating oil from overflowing from the oil filling port 144 when the equipment is tilted or vibrated, thus ensuring the cleanliness of the lubricating oil and the sealing of the oil dripping box 140.

[0082] Specifically, oil filler plug 180 is the oil filling plug.

[0083] In some embodiments of the present invention, optionally, such as Figure 2 As shown, the distance between the oil outlet end of the oil-drip needle 150 and the engagement area 122 is greater than or equal to 3 cm and less than or equal to 5 cm.

[0084] In this embodiment, the distance between the oil outlet of the oil-drip needle 150 and the meshing area 122 is greater than or equal to 3 cm and less than or equal to 5 cm. By controlling the distance between the oil outlet and the meshing area 122 within the range of 3 cm to 5 cm, it is possible to ensure that there is sufficient safe clearance between the oil outlet of the oil-drip needle 150 and the gear, avoiding interference and collision with the gear tooth surface when the gear rotates at high speed, which could cause damage to the oil-drip needle 150 or the gear. At the same time, it is possible to ensure that the path of the lubricating oil dripping from the oil outlet to the meshing area 122 is short, reducing the possibility of the lubricating oil deviating due to airflow or centrifugal force during the delivery process, ensuring that the lubricating oil can accurately reach the meshing area 122, and improving the accuracy and reliability of lubrication. If the distance between the oil outlet end of the oil-drip needle 150 and the meshing area 122 is less than 3 cm, the oil outlet end of the oil-drip needle 150 is prone to interference with the gear tooth surface; if the distance between the oil outlet end of the oil-drip needle 150 and the meshing area 122 is greater than 5 cm, the lubricating oil is easily affected by external environmental interference and deviates from the target position during the dripping process, resulting in reduced lubrication efficiency.

[0085] Specifically, in Figure 2 In the diagram, B represents the distance between the oil outlet end of the oil-drip needle 150 and the engagement area 122.

[0086] Specifically, the distance between the oil outlet end of the oil-drip needle 150 and the engagement area 122 is 3 centimeters.

[0087] Specifically, the distance between the oil outlet end of the oil-drip needle 150 and the engagement area 122 is 4 centimeters.

[0088] Specifically, the distance between the oil outlet end of the oil-drip needle 150 and the engagement area 122 is 5 centimeters.

[0089] Specifically, the oil drip needle 150 is a guide tube with an axially continuous flow channel. The oil drip needle 150 adopts a hollow tubular structure, with the internal flow channel extending axially to guide lubricating oil from the oil outlet 142 to the oil outlet end. The smooth inner wall of the flow channel reduces resistance during lubricating oil flow, ensuring smooth flow without blockage. Furthermore, the hollow tubular structure of the oil drip needle 150 is simple and easy to manufacture, which helps reduce production costs and increases the feasibility of mass production.

[0090] Specifically, the cross-sectional area of ​​the oil-drip needle 150 near the meshing area 122 gradually decreases along the axial direction towards the oil outlet end. This creates a throttling effect when the lubricating oil flows through the oil outlet end, causing the lubricating oil to drip into the meshing area 122 in the form of small droplets rather than a continuous flow. These small droplets are more likely to spread on the gear tooth surface to form a continuous and uniform oil film, avoiding oil loss and waste caused by large streams of oil directly washing the tooth surface, thus improving the utilization efficiency and lubrication effect of the lubricating oil.

[0091] Specifically, the traveling mechanism also includes a guide shoe 170, which is located at the bottom of the traveling housing 130. The traveling gear 120 is mounted on the guide shoe 170. The guide shoe 170 serves to support the weight of the coal mining equipment and guide the traveling gear 120 to drive the coal mining equipment to travel along the working face.

[0092] Specifically, during use, unscrew the oil filler plug 180 and fill the oil drip box 140 with lubricating oil. After filling with lubricating oil, adjust the regulator to control the flow of oil. After the lubricating oil flows out of the oil drip box 140, it reaches the oil drip needle 150, which acts as a guide to drip the lubricating oil onto the travel gear 120 and the drive gear 110.

[0093] Specifically, the traveling mechanism 100 of the coal mining equipment of the present invention, by setting the oil outlet end of the oil dripping needle 150 to face the meshing area 122 of the traveling gear 120 and the driving gear 110, has the following technical effects:

[0094] (1) Precise lubrication, significantly reducing wear: Through the directional guidance of the oil drip needle 150 and the flow control of the regulator, the precise delivery of lubricating oil is achieved, avoiding the problems of lubricating oil not reaching the meshing surface and uneven lubrication in traditional lubrication methods. It can effectively reduce the wear rate of the tooth surface of the drive gear 110 and the walking gear 120, extend the service life of the components, and reduce the frequency of equipment downtime for replacement.

[0095] (2) Easy to operate and adaptable to complex underground working conditions: The oil filling plug is easy to install and remove. The oil filling operation does not require disassembling complex parts. The regulator can be quickly adjusted when the equipment is stopped without additional tools. At the same time, the 140 oil drip box has a compact overall structure and can be directly installed on the existing coal mining machine's walking shell without large-scale modification of the equipment. It is compatible with the walking structure of different models of coal mining machines and is suitable for various underground fully mechanized mining faces.

[0096] (3) Sealing and anti-fouling, extending the service life of oil: The drip box 140 adopts a sealed design, which, together with the threaded sealing structure of the oil filling plug, can effectively isolate impurities such as dust, coal slag, and water vapor from the well from entering the oil cavity, avoid the lubricating oil from being contaminated, emulsified and deteriorated, reduce the frequency of oil replacement, and reduce operation and maintenance costs.

[0097] (4) Lubrication on demand, reducing resource waste and pollution: The flow rate of lubricating oil can be adjusted according to the working conditions, avoiding the oil waste caused by excessive oil injection in traditional lubrication. At the same time, it reduces the coal pollution caused by excess lubricating oil dripping onto the working face, reduces the workload of cleaning the working face, and improves the safety and environmental protection of on-site operations.

[0098] In some embodiments of the present invention, a coal mining device is provided, including the traveling mechanism 100 of the coal mining device in any of the above embodiments.

[0099] In this embodiment, since the coal mining equipment has the walking mechanism 100 of the coal mining equipment in any of the above embodiments, the coal mining equipment has all the beneficial effects of the walking mechanism 100 of the coal mining equipment in any of the above embodiments, which will not be described in detail here.

[0100] In the claims, description, and accompanying drawings of this invention, the term "plural" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the descriptive process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting the invention. The terms "connected," "installed," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood based on the specific circumstances described above.

[0101] In the claims, description, and accompanying drawings of this invention, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In the claims, description, and accompanying drawings of this invention, 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.

[0102] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A traveling mechanism for coal mining equipment, characterized in that, include: Drive gear; A traveling gear, which meshes with the drive gear; The walking housing, the walking gear and the drive gear are located inside the walking housing; An oil drip box is disposed on the walking housing and has an oil outlet. An oil-drip needle is located inside the walking housing and is connected to the walking housing. The oil inlet of the oil-drip needle is connected to the oil outlet of the oil-drip box, and the oil outlet of the oil-drip needle faces the meshing area between the walking gear and the drive gear.

2. The traveling mechanism of the coal mining equipment according to claim 1, characterized in that, The number of oil-drip needles is multiple, and the multiple oil-drip needles are arranged circumferentially along the oil outlet.

3. The traveling mechanism of the coal mining equipment according to claim 1, characterized in that, The oil drip box is located outside the walking housing, and the oil drip box is detachably connected to the walking housing.

4. The traveling mechanism of the coal mining equipment according to claim 1, characterized in that, The oil-drip needle is welded to the walking housing.

5. The traveling mechanism of the coal mining equipment according to claim 3, characterized in that, The outer side of the walking housing has a mounting groove, which is recessed into the walking housing. The oil drip box is disposed in the mounting groove and is limited to fit the mounting groove.

6. The traveling mechanism of the coal mining equipment according to claim 5, characterized in that, The bottom of the mounting groove has a limiting groove that communicates with the inside of the walking housing. The oil-drip needle passes through the limiting groove, and at least a portion of the oil-drip needle is located in the limiting groove. One end of the oil-drip needle away from the meshing area is connected to the limiting groove.

7. The traveling mechanism of the coal mining equipment according to claim 1, characterized in that, Also includes: An adjusting component is disposed in the oil drip box and cooperates with the oil outlet to adjust the flow rate of lubricating oil from the oil drip box to the oil drip needle.

8. The traveling mechanism of the coal mining equipment according to claim 1, characterized in that, The oil drip box has an oil inlet, and the traveling mechanism of the coal mining equipment further includes: The oil filling plug is threadedly connected to the oil filling port and is used to seal the oil filling port.

9. The traveling mechanism of the coal mining equipment according to any one of claims 1 to 8, characterized in that, The distance between the oil outlet end of the oil-drip needle and the engagement area is greater than or equal to 3 cm and less than or equal to 5 cm.

10. A coal mining equipment, characterized in that, Includes the traveling mechanism of the coal mining equipment as described in any one of claims 1 to 9.

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