A rotary shaft end portion oiling assembly and an oiling device

Abstract

The application relates to a quantitative oil coating assembly for the end of a rotating shaft, which comprises an oil storage tank with an oil storage cavity, oil taking plates horizontally slidingly arranged on the two sides of the oil storage tank, and an oil taking nozzle arranged on one end of the oil taking plate close to the oil storage tank, the oil storage tank is filled with lubricating oil in the oil storage cavity, oil taking holes communicating with the oil storage cavity and allowing the oil taking nozzle to be inserted are arranged on the two sides of the oil storage tank close to the two oil taking plates, and an oil taking coating groove for allowing lubricating oil to enter and allowing a shaft body to be inserted is formed on one end of the oil taking nozzle close to the oil storage tank. The application has the characteristics of quantitative oil taking and uniform oil coating.

Description

Technical Field

[0001] This application relates to the field of oiling equipment technology, and in particular to a quantitative oiling component and oiling device for the end of a rotating shaft. Background Technology

[0002] Currently, a shaft, as the name suggests, is a shaft that is essential for connecting the main components of a product and is used to withstand both bending moment and torque during rotation.

[0003] To ensure smoother operation of the shaft, it is usually necessary to apply oil to it. Conventional oiling is done manually with a brush. However, this method results in uneven application of lubricant, leading to inconsistent amounts of oil on the shaft and potential waste. Summary of the Invention

[0004] In order to achieve precise oil application, this application provides a quantitative oil application component and an oil application device for the end of a rotating shaft.

[0005] Firstly, this application provides a metering oiling assembly for the end of a rotating shaft, specifically achieved through the following technical solution:

[0006] A quantitative oiling assembly for a rotating shaft end includes an oil tank with an internal oil storage cavity, oil sampling plates horizontally slidably disposed on both sides of the oil tank, and oil sampling nozzles disposed on the oil sampling plates near one end of the oil tank. The oil tank is filled with lubricating oil in the oil storage cavity. The oil tank has oil sampling holes at both ends near the two oil sampling plates that communicate with the oil storage cavity and allow the oil sampling nozzles to be inserted. The end of the oil sampling nozzle near the oil tank forms an oil sampling and coating groove for lubricating oil to enter and for the shaft body to be inserted.

[0007] By adopting the above technical solution, when using the oiling assembly, the oil reservoir is filled with a paste-like lubricating oil. Then, the oil-tapping plates on both sides are slid horizontally towards the reservoir, allowing the oil-tapping nozzles to directly insert into the oil-tapping holes, enabling the lubricating oil to enter the oil-coating groove. The oil-tapping plates are then moved away from the reservoir, allowing the shaft to be inserted into the oil-coating groove, thus coating the shaft's circumference with lubricating oil. This solution ensures a consistent amount of oil is taken each time, resulting in a fixed amount of lubricating oil coated onto the shaft, thereby improving the oiling effect.

[0008] Preferably, the oil sampling plate has a retraction cavity inside, and the oil sampling nozzle includes a metering rod and a metering nozzle. The metering rod is coaxially slidably inserted into the middle of the metering nozzle and coaxially slidably inserted into the retraction cavity. The oil sampling plate has a retraction hole at one end near the oil storage tank that communicates with the retraction cavity and allows one end of the metering nozzle and the metering rod to pass through. The oil sampling plate has a guide hole at one end away from the oil storage tank for the metering rod to pass through. A first annular platform is coaxially arranged in the middle of the metering rod. A first compression spring is coaxially arranged in the retraction cavity of the oil sampling plate. The first compression spring is coaxially sleeved on the peripheral end of the metering rod and abuts against the end of the first annular platform away from the oil storage tank.

[0009] By adopting the above technical solution, the oil applicator includes a metering rod and a metering nozzle. The metering rod is coaxially slidably inserted into the middle of the metering nozzle, thereby forming an oil applicator coating groove at the end of the metering nozzle near the oil reservoir. By replacing the first compression spring, the insertion depth of the metering rod into the metering nozzle can be controlled, thus controlling the depth of the oil applicator coating groove and consequently controlling the amount of oil applicated each time. After the lubricating oil is applicated, a rotating shaft is inserted into the oil applicator coating groove, with one end of the rotating shaft abutting against one end of the metering rod, causing the metering rod to compress the first compression spring. This allows even longer rotating shafts to be applicated through the oiling assembly. This solution can adjust the amount of oil applicated according to shafts of different lengths and can applicate oil to rotating shafts of different lengths.

[0010] Preferably, a second annular platform is provided on the periphery of the end of the metering nozzle away from the oil reservoir, abutting against the side wall of the retraction cavity near the oil reservoir. The first annular platform abuts against the end of the metering nozzle away from the oil reservoir. A second compression spring is coaxially arranged on the oil taking plate in the retraction cavity. The second compression spring is coaxially sleeved on the periphery of the first compression spring and abuts against the end of the second annular platform away from the oil reservoir. A limiting annular platform is provided at the middle of the periphery of the metering nozzle, which slides into the retraction hole and abuts against the side end of the oil reservoir.

[0011] By adopting the above technical solution, a second ring platform is set at the end of the metering nozzle away from the oil reservoir, so that the second ring platform abuts against the inner wall of the retraction cavity. The second compression spring abuts against the end of the metering nozzle away from the oil reservoir, so that the metering nozzle can slide at the retraction hole without dislodging from the oil taking plate. When the oil taking plate moves towards the oil reservoir and the oil taking nozzle is inserted into the oil taking hole, the metering nozzle is squeezed by the paste-like lubricating oil and will first retract a part into the retraction hole. Then, under the action of the second compression spring, it will gradually be fully inserted. At this time, the lubricating oil can gradually fill the oil taking coating groove, thereby avoiding the lubricating oil not being able to completely fill the oil taking coating groove due to the pressure generated during insertion.

[0012] Preferably, the outer periphery of the metering nozzle near the oil storage tank is provided with an arc-shaped chamfer, and the oil coating tank near the oil storage tank is flared.

[0013] By adopting the above technical solution, a rounded chamfer is provided on the periphery of the metering nozzle near the oil reservoir. This allows the metering nozzle to be inserted into the oil outlet even when it is not fully aligned with the oil outlet, thanks to the second compression spring and the rounded chamfer, thus improving the accuracy of oil dispensing. Furthermore, the end of the oil dispensing and coating tank near the oil reservoir is flared, which allows the lubricating oil to enter the oil dispensing and coating tank more quickly and makes it easier to insert the shaft.

[0014] Preferably, the oil tank is rotatably equipped with an oil-dispensing wheel inside the oil storage cavity, the oil-dispensing wheel is located between the oil intake holes on both sides, and an oil-dispensing plate is arranged on the peripheral end of the oil-dispensing wheel.

[0015] By adopting the above technical solution, the rotating oil-dispensing wheel drives the oil-dispensing plate at the peripheral end to rotate, so that the oil-dispensing plate can continuously push the lubricating oil to the oil-taking holes on both sides, so that the lubricating oil in the oil-taking holes is always full, and thus the lubricating oil can fill the oil-taking coating tank with lubricating oil each time it is taken.

[0016] Preferably, the oil storage tank is vertically slidably provided with two oil separators inside the oil storage cavity, and the two oil separators respectively abut against the two side walls of the oil storage cavity and block the oil extraction hole.

[0017] By adopting the above technical solution, two oil separators are vertically slidable inside the oil storage tank. When the oil nozzle is inserted into the oil outlet and the lubricating oil has filled the oil coating tank, the oil separator is vertically slidable so that the oil separator abuts against the end of the metering nozzle inserted into the oil outlet, thereby cutting off the excess lubricating oil at the opening of the oil coating tank, thus making the oil metering of the oil extraction component more accurate.

[0018] Preferably, the oil storage tank includes a central tank body and sealing plates fixed to both sides of the tank body. There are two oil storage cavities located parallel to each other within the tank body. Oil permeable holes communicating with the oil storage cavities are provided at both sides of the tank body. An oil separating groove communicating with the oil permeable holes and allowing the oil separating plate to be vertically inserted is provided on one end face of the sealing plate that abuts against the tank body. A control rod is vertically slidably mounted between the two oil storage cavities in the tank body. The top of the control rod is connected to the top of the oil separating plate. The oil extraction hole is located on one end face of the sealing plate away from the oil storage tank and communicates with the oil separating groove.

[0019] By adopting the above technical solution, two oil storage chambers are opened in the box, so that when the oil plate moves to the oil storage tank, it can drive multiple oil nozzles to be inserted into the oil holes connected to different oil storage chambers. This allows the oiling component to take oil from multiple places at the same time, and then apply oil to multiple rotating shafts at the same time, improving the oiling efficiency. On the other hand, the oil separator is controlled to move vertically by the control rod, thereby separating the oil passage hole and the oil sampling hole. One control rod controls two oil separators at the same time, making the separation and quantitative process more convenient.

[0020] Preferably, the sealing plate has an oil-separating block vertically disposed at the bottom of the oil-separating groove, located between the two oil-permeable holes on the same side and abutting against the side end of the box body, and a slot for inserting the oil-separating block is vertically opened at the middle of the lower end of the oil-separating plate.

[0021] By adopting the above technical solution, when the oil separator on the sealing plate is located between the two oil storage chambers and abuts against the side of the box, the two oil storage chambers are completely separated, so that the lubricating oil will flow directly to the oil intake port after flowing out of the oil passage, thereby reducing the waste of lubricating oil.

[0022] Preferably, the oil tank has an opening at the top of the oil storage cavity, and an oil pressure plate is vertically slidably disposed in the oil tank within the oil storage cavity. A vent hole communicating with the oil storage cavity and the outside is provided in the middle of the oil pressure plate.

[0023] By adopting the above technical solution, the pressure plate is vertically inserted into the oil storage cavity in a horizontal state, so that the pressure plate abuts against the lubricating oil. As the lubricating oil at the bottom is gradually taken out, the pressure plate presses the lubricating oil under the action of gravity, so that the lubricating oil at the bottom of the oil storage cavity can always be kept full, thereby ensuring the quantitative oil extraction. At the same time, during the vertical movement of the pressure plate, excess air will be discharged from the vent in the middle, so that the pressure plate can move down smoothly.

[0024] Secondly, this application provides an oiling device, which is specifically achieved through the following technical solution:

[0025] An oiling device includes a movable platform for fixing an oil storage tank and a movable frame that is horizontally slidably disposed on the upper end of the movable platform and slidably connected to an oil-receiving plate, wherein the moving direction of the movable frame is perpendicular to the moving direction of the oil-receiving plate.

[0026] By adopting the above technical solution, the two oil-collecting plates are moved horizontally by the moving frame, so that the oil-collecting plates can be moved away from the sides of the oil tank. At this time, the rotating shaft is fixed horizontally on the moving platform, and the moving frame can move the oil-collecting plates to both sides of the rotating shaft, thereby performing oiling. This makes the oiling process more automated and improves the oiling efficiency.

[0027] In summary, the beneficial technical effects of this application are as follows:

[0028] 1. When using this oiling assembly, fill the oil reservoir with paste-like lubricating oil. Then, slide the oil-taking plates on both sides horizontally toward the oil reservoir so that the oil-taking nozzle is directly inserted into the oil-taking hole, allowing the lubricating oil to enter the oil-taking and coating groove. Then, move the oil-taking plates away from the oil reservoir. At this time, the shaft can be inserted into the oil-taking and coating groove so that the lubricating oil can be coated onto the circumferential end of the shaft. This ensures that the amount of oil taken each time is the same, thus ensuring that the amount of lubricating oil coated on the shaft is constant, thereby improving the oiling effect.

[0029] 2. The oil nozzle includes a metering rod and a metering nozzle. The metering rod is coaxially slidably inserted into the middle of the metering nozzle, thereby forming an oil coating groove at the end of the metering nozzle near the oil reservoir. By replacing the first compression spring, the depth of the metering rod inserted into the metering nozzle can be controlled, thereby controlling the depth of the oil coating groove and thus controlling the amount of oil dispensed each time. After the lubricating oil is dispensed, the rotating shaft is inserted into the oil coating groove. One end of the rotating shaft abuts against one end of the metering rod, causing the metering rod to compress the first compression spring. This allows longer rotating shafts to also be coated with oil through the oiling assembly, thus adjusting the amount of oil dispensed according to different shaft lengths and allowing oiling of rotating shafts of different lengths.

[0030] 3. A second ring platform is installed at the end of the metering nozzle away from the oil reservoir, so that the second ring platform abuts against the inner wall of the retraction cavity. A second compression spring is abutted against the end of the metering nozzle away from the oil reservoir, so that the metering nozzle can slide at the retraction hole without dislodging from the oil taking plate. When the oil taking plate moves towards the oil reservoir and the oil taking nozzle is inserted into the oil taking hole, the metering nozzle is squeezed by the paste-like lubricating oil and will first retract part of it into the retraction hole. Then, under the action of the second compression spring, it will gradually be fully inserted. At this time, the lubricating oil can gradually fill the oil taking coating groove, thereby avoiding the lubricating oil not being able to completely fill the oil taking coating groove due to the pressure generated during insertion. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the oiling device.

[0032] Figure 2 A schematic diagram of the oiling device from another perspective;

[0033] Figure 3 This is a schematic diagram of an explosion of an oil storage tank;

[0034] Figure 4 This is a schematic diagram of an explosion that involves the oil extraction plate.

[0035] Figure 5 This is an exploded diagram from another perspective of the oil extraction plate;

[0036] Figure 6 for Figure 5 Enlarged view of point A.

[0037] In the diagram: 1. Moving platform; 11. Moving slide rail; 12. Support frame; 2. Moving frame; 21. Moving slide block; 22. Oil intake slide rail; 23. Drive frame; 231. Drive cylinder; 31. Oil storage tank; 311. Housing; 3111. Oil storage chamber; 3112. Oil through hole; 312. Sealing plate; 3121. Oil separator groove; 3122. Oil intake hole; 3123. Oil separator plate; 31231. Slot; 3124. Oil separator block; 313. Control lever; 314. Oil separator cylinder; 315. Pressure... Oil plate; 3151, vent hole; 316, oil dispensing motor; 317, oil dispensing wheel; 3171, oil dispensing plate; 32, oil taking plate; 321, oil taking slide; 322, retraction chamber; 323, retraction hole; 3231, first compression spring; 3232, second compression spring; 324, guide hole; 33, oil taking nozzle; 331, metering rod; 3311, first ring platform; 332, metering nozzle; 3321, insertion hole; 3322, second ring platform; 3323, limiting ring platform; 333, oil taking coating tank. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0039] See Figure 1 An oiling device includes a mobile platform 1 horizontally supported on the ground, a mobile frame 2 horizontally slidably connected to the upper end of the mobile platform 1, and a metering oiling assembly at the end of a rotating shaft fixed to the mobile frame 2 and the mobile platform 1.

[0040] Two parallel sliding rails 11 are fixed to the upper surface of the mobile platform 1 by bolts. The lower end of the mobile frame 2 is fixed with a sliding block 21 that is engaged with the sliding rails 11 and slides along the length of the sliding rails 11 by bolts, so that the mobile frame 2 can slide horizontally on the upper end of the mobile platform 1.

[0041] See Figure 2 and Figure 4 The quantitative oiling assembly at the end of the rotating shaft includes an oil tank 31 fixed to the upper end of the mobile platform 1, an oil dispensing plate 32 horizontally slidably connected to the top of the mobile frame 2 and divided into two sides of the oil tank 31, and multiple oil dispensing nozzles 33 disposed on the oil dispensing plate 32 near the end of the oil tank 31.

[0042] See Figure 3The upper surface of the mobile platform 1 is fixed with a support frame 12 by bolts. The oil tank 31 includes a box body 311 in the middle and sealing plates 312 fixed to both sides of the box body 311 by bolts. The two sealing plates 312 are located at one end of the box body 311 near the oil intake plates 32 on both sides. The box body 311 is vertically fixed to the top of the support frame 12 by bolts. Two vertically shaped oil storage chambers 3111 are vertically opened in the middle of the box body 311. Multiple control rods 313 are vertically slidably inserted between the two oil storage chambers 3111 in the middle of the box body 311. The lower end of the control rods 313 passes through the support frame 12. An oil separator cylinder 314 is vertically fixed to the lower side of the support frame 12 on the upper surface of the mobile platform 1 by bolts. The piston rod of the oil separator cylinder 314 is fixed to the lower side of the multiple control rods 313 by bolts, so that the multiple control rods 313 can be driven to slide vertically together by the oil separator cylinder 314.

[0043] The sealing plate 312 abuts against one end face of the housing 311 and has a vertically formed oil-separating groove 3121. The oil-separating groove 3121 is connected to the upper end of the sealing plate 312. An oil-separating plate 3123 is vertically slidably inserted into the oil-separating groove 3121. The tops of multiple control rods 313 are fixed to the oil-separating plates 3123 on both sides by bolts, so that the oil-separating cylinder 314 can drive the oil-separating plate 3123 to slide vertically.

[0044] The housing 311 abuts against the two sides of the sealing plate 312 and has oil permeation holes 3112 that are connected to the oil storage chamber 3111. The vertically sliding oil separator 3123 can block the oil permeation holes 3112. The end face of the sealing plate 312 away from the housing 311 has an oil extraction hole 3122 that is connected to the oil separator 3121. The sealing plate 312 is integrally and vertically provided with an oil separator block 3124 located between the two oil permeation holes 3112 on the same side and abutting against the side of the housing 311. The lower middle part of the oil separator 3123 has a slot 31231 for inserting the oil separator block 3124. The two oil storage chambers 3111 are separated by the oil separator block 3124.

[0045] The oil reservoir 31 has an opening at the top of the oil storage chamber 3111. An oil pressure plate 315 is vertically slidably inserted into the oil reservoir 31 within the oil storage chamber 3111. The oil pressure plate 315 is horizontal, and a vent 3151 connecting the oil storage chamber 3111 to the outside is provided in the middle of the oil pressure plate 315. Under the influence of gravity, the oil pressure plate 315 can move vertically downwards within the oil storage chamber 3111.

[0046] The lower end of the support frame 12 is vertically fixed to both sides of the oil-separating cylinder 314 with bolts to a lubricating motor 316. The output shaft of the lubricating motor 316 passes vertically upward through the support frame 12 and rotates into the oil storage cavity 3111. The output shaft of the lubricating motor 316 is coaxially fixed to a lubricating wheel 317 in the oil storage cavity 3111 with bolts. A lubricating plate 3171 is integrally formed on the circumferential side of the lubricating wheel 317. The lubricating wheel 317 is located between two oil passage holes 3112 in the same oil storage cavity 3111. The lubricating motor 316 drives the lubricating wheel 317 to rotate, thereby pushing the lubricating oil to the oil passage holes 3112 on both sides through the lubricating plate 3171.

[0047] See Figure 4 ,、 Figure 5 and Figure 6 An oil-collecting slide block 321 is horizontally fixed to the top of the oil-collecting plate 32 by bolts. An oil-collecting slide rail 22 is horizontally fixed to the lower middle part of the moving frame 2 by bolts. The oil-collecting slide rail 22 is perpendicular to the sealing plate 312 and the moving slide rail 11. The oil-collecting slide block 321 is engaged with the oil-collecting slide rail 22 and slides along the length of the oil-collecting slide rail 22. A drive frame 23 is vertically fixed to the lower middle part of the moving frame 2 on the side of the two oil-collecting plates 32 that is far apart from each other by bolts. A drive cylinder 231 is horizontally fixed to the end of the drive frame 23 near the oil-collecting plate 32 by bolts. The piston rod of the drive cylinder 231 is fixed to the end face of the oil-collecting plate 32 that is far away from the housing 311 by bolts. The drive cylinder 231 can drive the oil-collecting plate 32 to slide horizontally under the guidance of the oil-collecting slide rail 22.

[0048] The oil-taking plate 32 has multiple retraction cavities 322 axially aligned with the oil-taking holes 3122 inside. The oil-taking plate 32 has a retraction hole 323 coaxially connected to the retraction cavity 322 at one end near the housing 311. The oil-taking plate 32 has a guide hole 324 coaxially connected to the retraction cavity 322 at one end away from the housing 311.

[0049] The oil tap 33 includes a metering rod 331 and a metering nozzle 332. The metering nozzle 332 has a through-hole 3321 coaxially formed in its center. The metering rod 331 is slidably inserted into the hole 3321, and the metering nozzle 332 is slidably inserted into the retraction hole 323. A second annular platform 3322 is integrally formed on the periphery of the end of the metering nozzle 332 away from the oil reservoir 31, abutting against the side wall of the retraction cavity 322 near the oil reservoir 31. A first annular platform 3311 is integrally formed coaxially in its center, abutting against the metering nozzle 332. 2. At the end away from the oil reservoir 31, the metering rod 331 at the end away from the housing 311 is slidably inserted into the guide hole 324. A first compression spring 3231 and a second compression spring 3232 are coaxially inserted into the retraction cavity 322. The first compression spring 3231 is coaxially sleeved around the metering rod 331, and the second compression spring 3232 is coaxially sleeved around the first compression spring 3231. The first compression spring 3231 abuts against the end of the first ring platform 3311 away from the housing 311, and the second compression spring 3232 abuts against the end of the second ring platform 3322 away from the housing 311.

[0050] The end of the metering rod 331 near the housing 311 protrudes from the insertion hole 3321, thereby forming an oil coating groove 333 at the end of the metering nozzle 332 near the housing 311. A limiting ring platform 3323 is integrally provided in the middle of the metering nozzle 332 and slides into the retraction hole 323, so that when one end of the metering nozzle 332 is inserted into the oil extraction hole 3122, the limiting ring platform 3323 abuts against the end face of the sealing plate 312 away from the housing 311.

[0051] The metering nozzle 332 has a rounded chamfer on the outer periphery of the end near the oil tank 31, and the material coating tank has an flared end near the oil tank 31.

[0052] The implementation principle of this embodiment is as follows:

[0053] When using this oiling device, fill the two oil storage chambers 3111 of the oil storage tank 31 with paste-like lubricating oil. Then, insert the pressure plate 315 vertically into the oil storage chamber 3111 in a horizontal position, so that the pressure plate 315 slides down the oil storage chamber 3111 under the action of gravity and presses onto the lubricating oil. Fix the rotating shaft horizontally on the upper end of the moving platform 1. Then, move the moving frame 2 horizontally to the upper side of the oil storage tank 31, and then move the oil taking plates 32 on both sides towards the middle of the oil storage tank 31. The movement causes the oil nozzle 33 on the oil plate 32, near the oil tank 31, to insert into the oil outlet 3122. At this time, the metering nozzle 332 slides into the retraction cavity 322 and compresses the second compression spring 3232. Similarly, the metering rod 331 moves away from the oil tank 31 and compresses the first compression spring 3231. The control rod 313 drives the oil separator 3123 to move vertically upward, so that the oil passage 3112 connects the oil separator groove 3121 and the oil outlet 3122. The oil wheel 31 is then rotated. 7. The oil-dispensing plate 3171 pushes the lubricating oil into the oil passage 3112 and into the oil-collecting coating tank 333 through the oil separator 3121. Then, the control rod 313 drives the oil separator 3123 to move vertically downward until the lower end of the oil separator 3123 is fully inserted into the oil separator 3121. At this time, the oil separator 3123 abuts against the end of the metering nozzle 332, thereby cutting off the lubricating oil at the opening of the oil-collecting coating tank 333. The oil-collecting plate 32 moves away from the oil storage tank 31. The first compression spring 3231 and the second compression spring 3232 move to reset the metering rod 331 and the metering nozzle 332 respectively, thus completing the oil collection. Then the moving frame 2 moves horizontally, so that the oil collection plate 32 moves to both sides of the rotating shaft. The two oil collection plates 32 move towards the middle, so that the rotating shaft is horizontally inserted into the oil coating tank 333 and abuts against the metering rod 331 to compress the first compression spring 3231. When the rotating shaft is fully inserted, the two oil collection plates 32 are moved horizontally to both sides, and the oil coating is completed.

[0054] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A metering oiling assembly for the end of a rotating shaft, characterized in that: The system includes an oil tank (31) with an internal oil storage cavity (3111), oil sampling plates (32) horizontally slidably disposed on both sides of the oil tank (31), and an oil sampling nozzle (33) disposed on one end of the oil sampling plate (32) near the oil tank (31). The oil tank (31) is filled with lubricating oil in the oil storage cavity (3111). The oil tank (31) has an oil sampling hole (3122) on both sides near the two oil sampling plates (32) that communicates with the oil storage cavity (3111) and allows the oil sampling nozzle (33) to be inserted. The oil sampling nozzle (33) has an oil coating groove (333) formed at one end near the oil tank (31) for lubricating oil to enter and for the shaft to be inserted. The oil sampling plate (32) has a retraction cavity (322) inside. The oil sampling nozzle (33) includes a metering rod (331) and a metering nozzle (332). The metering rod (331) is coaxially slidably inserted into the middle of the metering nozzle (332). The metering rod (331) is coaxially slidably inserted into the retraction cavity (322). The oil sampling plate (32) has a retraction hole at one end near the oil storage tank (31) that communicates with the retraction cavity (322) and allows one end of the metering nozzle (332) and the metering rod (331) to pass through. (323) The oil-taking plate (32) has a guide hole (324) at one end away from the oil storage tank (31) for the metering rod (331) to pass through. A first ring platform (3311) is coaxially arranged in the middle of the metering rod (331). A first compression spring (3231) is coaxially arranged in the retraction cavity (322) of the oil-taking plate (32). The first compression spring (3231) is coaxially sleeved on the periphery of the metering rod (331) and abuts against the end of the first ring platform (3311) away from the oil storage tank (31). The oil storage tank (31) has two oil-separating plates (3123) vertically sliding inside the oil storage cavity (3111). The two oil-separating plates (3123) respectively abut against the two side walls of the oil storage cavity (3111) and block the oil extraction hole (3122).

2. The shaft end metering oiling assembly according to claim 1, characterized in that: The metering nozzle (332) is provided with a second annular platform (3322) on the periphery of the end away from the oil tank (31), which abuts against the side wall of the retraction cavity (322) near the oil tank (31). The first annular platform (3311) abuts against the end of the metering nozzle (332) away from the oil tank (31). The oil taking plate (32) is coaxially arranged with a second compression spring (3232) in the retraction cavity (322). The second compression spring (3232) is coaxially sleeved on the periphery of the first compression spring (3231) and abuts against the end of the second annular platform (3322) away from the oil tank (31). The middle of the periphery of the metering nozzle (332) is provided with a limiting annular platform (3323) that slides into the retraction hole (323) and abuts against the side end of the oil tank (31).

3. The shaft end metering oiling assembly according to claim 2, characterized in that: The metering nozzle (332) has a rounded chamfer on the outer periphery near the oil storage tank (31), and the oil coating tank (333) has an flared end near the oil storage tank (31).

4. The metering oiling assembly for the shaft end according to claim 1, characterized in that: The oil tank (31) has an oil-dispensing wheel (317) rotatably mounted inside the oil storage cavity (3111). The oil-dispensing wheel (317) is located between the oil extraction holes (3122) on both sides. An oil-dispensing plate (3171) is arranged on the peripheral end of the oil-dispensing wheel (317).

5. The metering oiling assembly for the shaft end according to claim 1, characterized in that: The oil storage tank (31) includes a central tank body (311) and sealing plates (312) fixed to both sides of the tank body (311). There are two oil storage cavities (3111) located parallel to each other within the tank body (311). Oil permeable holes (3112) communicating with the oil storage cavities (3111) are provided at both sides of the tank body (311). The sealing plates (312) abutting against one end face of the tank body (311) are provided with holes communicating with the oil permeable holes. 3112) and an oil-separating groove (3121) into which the oil-separating plate (3123) is vertically inserted. The housing (311) is vertically slidably provided with a control rod (313) between the two oil storage chambers (3111). The top of the control rod (313) is connected to the top of the oil-separating plate (3123). The oil extraction hole (3122) is opened on the end face of the sealing plate (312) away from the oil storage tank (31) and communicates with the oil-separating groove (3121).

6. The shaft end metering oiling assembly according to claim 5, characterized in that: The sealing plate (312) has an oil-blocking block (3124) vertically arranged at the bottom of the oil-blocking groove (3121) between the two oil-permeable holes (3112) on the same side and abutting against the side end of the box body (311). The lower middle part of the oil-blocking plate (3123) has a slot (31231) vertically opened for the oil-blocking block (3124) to be inserted.

7. The metering oiling assembly for the shaft end according to claim 1, characterized in that: The oil storage tank (31) has an opening at the top of the oil storage cavity (3111). The oil storage tank (31) has a pressure plate (315) that slides vertically inside the oil storage cavity (3111). The pressure plate (315) has a vent hole (3151) in the middle that connects the oil storage cavity (3111) and the outside.

8. An oiling device comprising a metering oiling assembly for the end of a rotating shaft as described in any one of claims 1-7, characterized in that: It also includes a mobile platform (1) for fixing the oil storage tank (31) and a mobile frame (2) that is horizontally slidably disposed on the upper end of the mobile platform (1) and slidably connected to the oil sampling plate (32). The moving direction of the mobile frame (2) is perpendicular to the moving direction of the oil sampling plate (32).

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