Planetary gear facilitating internal oil injection

Abstract

The utility model relates to a planetary gear convenient for internal oil injection, which belongs to the technical field of planetary gears convenient for internal oil injection and comprises a planetary gear main body, support plates are mounted on the left side and the right side of the planetary gear main body, side cover plates are fixed on the peripheral walls of the support plates, and the right sides of the support plates are rotatably connected with central shafts; an oil injection mechanism is arranged on the supporting plate and comprises a sealing plate connected into the supporting plate in a sliding mode, an oil injection groove is formed in the supporting plate, an oil inlet hole is formed in the side, away from the planetary gear body, of the side cover plate, and a plurality of oil outlet holes are formed in the side, facing the planetary gear body, of the supporting plate. A sealing cylinder is fixed to the right side of the sealing plate, and a plurality of communicating holes are formed in the peripheral wall of the sealing cylinder. According to the planetary gear facilitating internal oil injection, after oil injection is completed, a spring and other structures arranged on the oil injection mechanism automatically push the sealing plate to reset to block the oil inlet hole, and oil injection operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gears which are convenient for internal oil injection, in particular to a planetary gear which is convenient for internal oil injection. Background Art

[0002] Planetary gears refer to gear systems that, in addition to being able to rotate around their own axes like fixed-axis gears, also have axes that rotate around the axes of other gears along with the planetary carrier. Rotation around their own axes is called "rotation," and rotation around the axes of other gears is called "revolution," just like the planets in the solar system, hence the name. Planetary gears are very common in mechanical manufacturing.

[0003] For example, a Chinese patent (publication number: CN216589791U) discloses a planetary gear that is easy to fill with oil inside, including a planetary gear body, a reinforcement plate fixedly connected to one side of the planetary gear body, the number of the reinforcement plates is set to three, an oil filling hole is opened on one side of the reinforcement plate, and a first oil outlet hole is opened on the other side of the reinforcement plate, the number of the first oil outlet holes is set to multiple, an oil groove is opened inside the reinforcement plate, and the oil groove is connected to the oil filling hole. By rotating the rotating rod, the sealing plug is unscrewed from the inside of the oil filling hole, and lubricating oil is injected into the oil groove through the oil filling hole. Then, by rotating the rotating rod, the sealing plug seals the oil filling hole to prevent oil leakage. By starting the planetary gear body, the lubricating oil in the oil groove flows out from the first oil outlet hole to lubricate the sun gear and planetary gears inside the planetary gear body, thereby improving the use effect of the planetary gear and extending the service life of the planetary gear.

[0004] However, the above-mentioned search patent still has some shortcomings. It has three oil filling holes on one side of the planetary gear body, and three corresponding sealing plugs are provided. As a result, it is necessary to remove the three sealing plugs and fill the three oil filling holes with oil during use, which reduces the convenience of the oil filling operation and is inconvenient to use. Therefore, a planetary gear that is easy to fill with oil inside is proposed to solve the above problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the present invention provides a planetary gear that is easy to oil inside, has the advantages of being easy to use, and solves the problem that the device disclosed in the above-mentioned search patent is not easy to oil during use.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a planetary gear that is convenient for internal oil injection, comprising a planetary gear body, support plates mounted on both left and right sides of the planetary gear body, side cover plates fixed to the outer peripheral walls of the support plates, and a central shaft rotatably connected to the right side of the support plates;

[0007] The support plate is provided with an oil filling mechanism, which includes a sealing plate slidably connected to the inside of the support plate, an oil filling groove being provided in the support plate, an oil inlet hole being provided on the side of the side cover plate facing away from the planetary gear body, and a plurality of oil outlet holes being provided on the side of the support plate facing the planetary gear body, a sealing cylinder is fixed on the right side of the sealing plate, a plurality of connecting holes are provided on the outer peripheral wall of the sealing cylinder, a sealing ring is fixed on the right side of the sealing plate, a spring is fixed on the left side of the sealing plate, two guide rods are fixed between the inner walls on the left and right sides of the oil filling groove, and a guide hole for the sliding connection of the guide rod is provided on the right side of the sealing plate.

[0008] Furthermore, the oil injection mechanism further includes a mounting ring fixed on the outer peripheral wall of the central shaft, a plurality of stirring rods are fixed on the outer peripheral wall of the mounting ring, and a scraper is fixed on the outer peripheral wall of the stirring rod.

[0009] Furthermore, the support plate is an equilateral triangular plate, the side cover plate is a circular plate, the central axis passes through the planetary gear body from left to right, and the central axis, side cover plate and support plate are located on the same central axis.

[0010] Furthermore, the oil inlet and the oil outlet are both connected to the oil filling groove, the oil filling groove is a circular groove, and the plurality of oil outlet holes are equidistantly distributed in a circular array.

[0011] Furthermore, the right side of the sealing cylinder is open, the right end of the sealing cylinder extends to the inside of the oil inlet hole and is gap-fitted therewith, and the communicating hole is close to the left side of the sealing cylinder.

[0012] Furthermore, the sealing ring is sleeved on the outer peripheral wall of the sealing cylinder, the sealing ring is an elastic rubber ring, the guide rod is used for allowing the sealing plate to slide left and right on its outer peripheral wall, and the spring is located between the two guide rods.

[0013] Furthermore, the mounting ring is located inside the oil filling groove, and the plurality of stirring rods are distributed equidistantly along the circumferential direction of the mounting ring.

[0014] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0015] 1. The planetary gear which is convenient for internal oil filling, when in use, inserts the lubricating oil injection pipe into the oil inlet hole, automatically pushes open the sealing plate, and then can fill the oil into the oil filling groove. Furthermore, the lubricating oil enters the planetary gear body through the oil outlet hole to lubricate the gears. After the oil filling is completed, the lubricating oil injection pipe is pulled out of the oil inlet hole, and the spring and other structures provided in the oil filling mechanism automatically push the sealing plate to return to the original position to block the oil inlet hole, which greatly facilitates the oil filling operation, is more convenient to use, has better practicality, and is more convenient to promote and use.

[0016] 2. The planetary gear is easy to oil inside, and the oil filling mechanism is provided with an oil inlet hole, which does not require multiple operations during operation. During oil filling, the provided stirring rod cooperates with the scraper to evenly fill the injected lubricating oil in the oil filling groove, making it easy to evenly discharge the lubricating oil from multiple oil outlet holes, thereby avoiding the accumulation of lubricating oil at a certain position inside the planetary gear body and affecting the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 This is a side cross-sectional schematic diagram of the support plate of the utility model;

[0019] Figure 3 For this utility model Figure 2 Enlarged schematic diagram of point A in the middle.

[0020] In the figure: 1 planetary gear body, 2 support plate, 3 side cover plate, 4 center shaft, 501 sealing plate, 502 oil filling groove, 503 oil inlet hole, 504 oil outlet hole, 505 sealing cylinder, 506 connecting hole, 507 sealing ring, 508 spring, 509 guide rod, 510 guide hole, 511 mounting ring, 512 stirring rod, 513 scraper. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 In this embodiment, a planetary gear that is convenient for internal oil injection includes a planetary gear body 1, support plates 2 are installed on the left and right sides of the planetary gear body 1, a side cover plate 3 is fixed to the outer peripheral wall of the support plate 2, and the right side of the support plate 2 is rotatably connected to a central shaft 4. The support plate 2 is an equilateral triangular plate, the side cover plate 3 is a circular plate, and the central shaft 4 passes through the planetary gear body 1 from left to right. The central shaft 4, the side cover plate 3, and the support plate 2 are located on the same central axis.

[0023] See also Figure 1-3, an oil filling mechanism is provided on the support plate 2, which includes a sealing plate 501 slidably connected to the inside of the support plate 2, an oil filling groove 502 is provided in the support plate 2, an oil inlet hole 503 is provided on the side of the side cover plate 3 facing away from the planetary gear body 1, and a plurality of oil outlet holes 504 are provided on the side of the support plate 2 facing the planetary gear body 1. A sealing cylinder 505 is fixed to the right side of the sealing plate 501, and a plurality of connecting holes 506 are provided on the outer peripheral wall of the sealing cylinder 505. The oil inlet hole 503 and the oil outlet hole 504 are both connected to the oil filling groove 502. The oil filling groove 502 is a circular groove, and the plurality of oil outlet holes 504 are arranged in a circular shape. The circular array is evenly distributed, and the right side of the sealing cylinder 505 is open. The right end of the sealing cylinder 505 extends to the inside of the oil inlet hole 503 and fits in with the gap therewith. The connecting hole 506 is close to the left side of the sealing cylinder 505. When oiling is needed, the pipe for injecting lubricating oil is inserted into the oil inlet hole 503. The pipe abuts against the sealing cylinder 505 and pushes it to the left. When the connecting hole 506 is connected with the oil filling groove 502, oiling can begin. The lubricating oil enters the sealing cylinder 505 from the pipe, and is further discharged into the oil filling groove 502 through the connecting hole 506 and then discharged into the inside of the planetary gear body 1 through the oil outlet hole 504.

[0024] See also Figure 1-3 A sealing ring 507 is fixed on the right side of the sealing plate 501, and a spring 508 is fixed on the left side of the sealing plate 501. Two guide rods 509 are fixed between the inner walls of the left and right sides of the oil filling groove 502, which pass through the sealing plate 501 horizontally and are slidably connected thereto. A guide hole 510 for sliding connection of the guide rod 509 is opened on the right side of the sealing plate 501. The sealing ring 507 is sleeved on the outer peripheral wall of the sealing cylinder 505. The sealing ring 507 is an elastic rubber ring. The guide rod 509 is used to allow the sealing plate 501 to slide left and right on its outer peripheral wall. The spring 50 8 is located between the two guide rods 509. When the sealing cylinder 505 moves to the left, the sealing cylinder 505 will also drive the sealing plate 501 to cooperate with the guide rod 509 and the guide hole 510 to move to the left to compress the spring 508. When the oil filling is completed, the oil filling pipeline is pulled out, and the spring 508 pushes the sealing plate 501 to move to the right and reset, so that the sealing cylinder 505 and the sealing plate 501 cooperate with the sealing ring 507 to automatically seal the oil inlet hole 503, which greatly facilitates the oil filling operation, is more convenient to use, has better practicality, and is more convenient to promote and use.

[0025] See also Figure 2In this embodiment, the oil filling mechanism also includes a mounting ring 511 fixed on the outer peripheral wall of the central shaft 4, and a plurality of stirring rods 512 are fixed on the outer peripheral wall of the mounting ring 511, and a scraper 513 is fixed on the outer peripheral wall of the stirring rod 512. The mounting ring 511 is located inside the oil filling groove 502, and the plurality of stirring rods 512 are equidistantly distributed along the circumferential direction of the mounting ring 511. The oil filling mechanism is provided with an oil inlet hole 503, and no multiple operations are required during operation. When filling oil, the central shaft 4 will drive the mounting ring 511 to rotate, and the mounting ring 511 will drive the plurality of stirring rods 512 to revolve around the central shaft 4, thereby driving the scraper 513 to stir the lubricating oil inside the oil filling groove 502, so that the lubricating oil can be filled evenly and better discharged evenly from the plurality of oil outlet holes 504, thereby avoiding the accumulation of lubricating oil at a certain position inside the planetary gear body 1 and affecting the lubrication effect.

[0026] The working principle of the above embodiment is:

[0027] When oil filling is needed, the pipeline for injecting lubricating oil is inserted into the oil inlet hole 503, the pipeline abuts against the sealing cylinder 505 and pushes it to the left. When the connecting hole 506 is connected with the oil filling groove 502, oil filling can be started. The lubricating oil enters the sealing cylinder 505 from the pipeline, and is further discharged into the oil filling groove 502 through the connecting hole 506 and then discharged into the interior of the planetary gear body 1 through the oil outlet hole 504. When the sealing cylinder 505 moves to the left, the sealing cylinder 505 will also drive the sealing plate 501 to move to the left in conjunction with the guide rod 509 and the guide hole 510 to compress. Spring 508. When the oil filling is completed, the oil filling pipe is pulled out, and the spring 508 pushes the sealing plate 501 to move to the right and reset, so that the sealing cylinder 505 and the sealing plate 501 cooperate with the sealing ring 507 to automatically seal the oil inlet hole 503. When the central shaft 4 rotates, it will drive the mounting ring 511 to rotate, and the mounting ring 511 drives multiple stirring rods 512 to revolve around the central shaft 4, and then drives the scraper 513 to stir the lubricating oil inside the oil filling tank 502, so that the lubricating oil can be filled evenly and discharged evenly from multiple oil outlet holes 504.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A planetary gear for easy internal oil injection, comprising a planetary gear body (1), support plates (2) being mounted on both left and right sides of the planetary gear body (1), a side cover plate (3) being fixed on the outer peripheral wall of the support plate (2), and a central shaft (4) being rotatably connected to the right side of the support plate (2); Features: The support plate (2) is provided with an oil injection mechanism, the oil injection mechanism comprising a sealing plate (501) slidably connected to the inside of the support plate (2), an oil injection groove (502) is provided in the support plate (2), an oil inlet hole (503) is provided on the side of the side cover plate (3) facing away from the planetary gear body (1), a plurality of oil outlet holes (504) are provided on the side of the support plate (2) facing the planetary gear body (1), a sealing cylinder (505) is fixed on the right side of the sealing plate (501), and the sealing cylinder (505) is fixed on the right side of the sealing plate (501). A plurality of connecting holes (506) are provided on the outer peripheral wall of the sealing cylinder (505); a sealing ring (507) is fixed on the right side of the sealing plate (501); a spring (508) is fixed on the left side of the sealing plate (501); two guide rods (509) are fixed between the inner walls on the left and right sides of the oil filling groove (502) and penetrate the sealing plate (501) horizontally and are slidably connected thereto; a guide hole (510) for the guide rod (509) to be slidably connected thereto is provided on the right side of the sealing plate (501).

2. A planetary gear for easy internal oil injection according to claim 1, characterized in that: The oil injection mechanism further comprises a mounting ring (511) fixed on the outer peripheral wall of the central shaft (4), a plurality of stirring rods (512) are fixed on the outer peripheral wall of the mounting ring (511), and a scraper (513) is fixed on the outer peripheral wall of the stirring rods (512).

3. A planetary gear for easy internal oil injection according to claim 1, characterized in that: The support plate (2) is an equilateral triangular plate, the side cover plate (3) is a circular plate, the central axis (4) passes through the planetary gear body (1) from left to right, and the central axis (4), the side cover plate (3) and the support plate (2) are located on the same central axis.

4. A planetary gear for easy internal oil injection according to claim 1, characterized in that: The oil inlet hole (503) and the oil outlet hole (504) are both connected to the oil filling groove (502); the oil filling groove (502) is a circular groove; and the plurality of oil outlet holes (504) are equidistantly distributed in a circular array.

5. A planetary gear for easy internal oil injection according to claim 1, characterized in that: The right side of the sealing cylinder (505) is open, the right end of the sealing cylinder (505) extends into the oil inlet hole (503) and is clearance-matched therewith, and the communicating hole (506) is close to the left side of the sealing cylinder (505).

6. A planetary gear for easy internal oil injection according to claim 1, characterized in that: The sealing ring (507) is sleeved on the outer peripheral wall of the sealing cylinder (505); the sealing ring (507) is an elastic rubber ring; the guide rods (509) are used to allow the sealing plate (501) to slide left and right on the outer peripheral wall; and the spring (508) is located between the two guide rods (509).

7. A planetary gear for easy internal oil injection according to claim 2, characterized in that: The mounting ring (511) is located inside the oil filling groove (502), and the plurality of stirring rods (512) are distributed at equal distances along the circumferential direction of the mounting ring (511).

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