Anti-abrasion planetary reducer

Abstract

The utility model relates to an anti-wear planetary reducer which comprises a reducer shell and a motor, the reducer shell comprises a front shell and a rear shell, an inner gear ring is integrally formed on the inner side of the rear shell, a sun gear is arranged in the center of the inner gear ring, the motor is fixed on the rear shell, and an output shaft of the motor is fixedly connected with the sun gear. A plurality of planetary gears are arranged between the sun gear and the inner gear ring in a meshed mode, an output shaft is rotationally connected to the front shell, a planet carrier is fixedly connected to the output shaft, a gear shaft is arranged on the planet carrier, the planetary gears are rotationally connected to the gear shaft, and an oil supply mechanism is arranged in a part of tooth grooves of the inner gear ring. An oil storage groove communicated with the oil supply mechanism is formed in the rear shell, an oil supply opening used for being communicated with the oil storage groove is formed in the upper side of the rear shell, the oil supply mechanism is used for enabling lubricating oil to flow out when the planetary gear crosses the tooth groove where the planetary gear is located, and the effect of continuously lubricating the internal gear in the working process can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to an anti-wear planetary speed reducer. Background Art

[0002] Due to its compact structure and high efficiency, the planetary speed reducer has been widely used in various industrial applications. However, in the actual use process, in order to maintain the good operation state of the planetary speed reducer, reduce gear wear and extend the service life, lubricating oil needs to be frequently added to the gears inside the planetary speed reducer. There are certain deficiencies in the lubricating oil addition of traditional planetary speed reducers. For example, some need to be disassembled to lubricate the inside, and some have oil injection holes leading to the inside on the speed reducer housing. However, the injected lubricating oil deposits at the bottom of the housing after lubricating the gears and cannot continuously lubricate the gears. Therefore, after the speed reducer is used for a short period of time, the user has to add lubricating oil from the oil injection hole again. In this way, the frequency of the user adding lubricating oil is relatively high, increasing the user's maintenance frequency. In view of the above technical problems, this application makes improvements. Content of the Utility Model

[0003] The utility model provides an anti-wear planetary speed reducer, which can continuously lubricate the internal gears when the speed reducer is working, and solves the above problems existing in the prior art during use.

[0004] The technical solution of the utility model is realized as follows: an anti-wear planetary speed reducer includes a speed reducer housing and a motor. The speed reducer housing includes a front housing and a rear housing which are fixedly connected. An internal gear ring is integrally formed on the inner side of the rear housing. A sun gear is arranged at the center inside the internal gear ring. The motor is fixed on the rear housing. The output shaft of the motor extends into the rear housing and is fixedly connected with the sun gear. A plurality of planetary gears are meshed between the sun gear and the internal gear ring. An output shaft is rotatably connected to the front housing. One end of the output shaft passes through the front housing, and the other end is located inside the front housing and is fixedly connected with a planet carrier. A gear shaft for rotatably connecting the planetary gears is arranged on the planet carrier. The internal gear ring includes a plurality of internal teeth, and a tooth groove is provided between each adjacent internal tooth. An oil supply mechanism is arranged in a part of the tooth grooves. An oil storage tank communicated with the oil supply mechanism is arranged in the rear housing. An oil supply port for communicating with the oil storage tank is opened on the upper side of the rear housing. The oil supply mechanism is used for making the lubricating oil flow out when the planetary gear crosses the tooth groove where it is located.

[0005] Preferably, at least four oil supply mechanisms are arranged at equal circumferential intervals on the internal gear ring, and the oil storage tank is annularly arranged outside the oil supply mechanism.

[0006] Preferably, the oil supply mechanism includes an oil passage hole, a sealing seat, a resisting column and a spring. One end of the oil passage hole communicates with the oil storage tank, and the other end penetrates through the tooth groove to form an oil outlet. The resisting column is slidably fitted on the oil outlet. One end of the resisting column penetrates into the tooth groove, and the other end of the resisting column is fixedly connected with the sealing seat. The sealing seat is movably arranged in the oil passage hole. The spring is located in the oil passage hole and is used to push the sealing seat to block the oil outlet.

[0007] Preferably, the inner gear ring is provided with a limiting platform at the position of the oil outlet. The limiting platform is used to abut against the sealing seat, and a sealing ring is arranged on one side of the sealing seat facing the limiting platform.

[0008] Preferably, a plurality of oil passage grooves are axially formed on the outer side wall of the resisting column, and a rubber ball head is fixedly connected to one end of the resisting column located in the tooth groove.

[0009] Preferably, an annular abutting seat is integrally formed in the oil passage hole of the rear housing. The spring is located between the annular abutting seat and the sealing seat, and a positioning column for the spring to be sleeved outside is arranged on the sealing seat.

[0010] Preferably, a plug is arranged on the oil supply port.

[0011] In summary, the beneficial effects of the present utility model are as follows:

[0012] 1. The present utility model can inject lubricating oil through the oil supply port, and the lubricating oil fills the oil storage tank. When the present utility model starts to work, the oil supply mechanism is used to make the lubricating oil flow out when the planetary gear crosses the tooth groove where it is located, so as to lubricate the planetary gear. And when the planetary gear rotates, it can also drive the lubricating oil to the sun gear and the inner teeth of the entire inner gear ring. The present utility model is convenient for injecting lubricating oil and can achieve a continuous lubricating effect. Therefore, the frequency of adding lubricating oil can be reduced, and the workload of users can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the present utility model after removing the front housing;

[0016] Figure 3 It isFigure 1 Schematic structural diagram when observed from another angle;

[0017] Figure 4 Schematic structural diagram of the present utility model after removing the rear housing and the motor;

[0018] Figure 5 Side view of the present utility model;

[0019] Figure 6 is Figure 5 Schematic sectional structure diagram in the direction of A - A;

[0020] Figure 7 Figure 6 Partial enlarged schematic diagram at position A in;

[0021] Figure 8 Schematic structural diagram of the sealing seat, the abutting post and the positioning post in the present utility model.

[0022] In the figure: 1, reducer housing; 11, front housing; 12, rear housing; 121, oil storage tank; 122, oil supply port; 2, internal gear ring; 21, internal teeth; 22, tooth grooves; 31, oil through hole; 32, sealing seat; 321, sealing ring; 33, abutting post; 331, oil through groove; 34, rubber ball head; 35, positioning post; 36, spring; 37, oil outlet; 38, limiting platform; 39, annular abutting seat; 4, motor; 5, sun gear; 6, planetary gear; 7, output shaft; 8, planet carrier; 81, gear shaft; 9, plug. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely in conjunction with the attached Figures 1-8 , and it is obvious that the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] Embodiment:

[0025] Such as Figures 1 to 8As shown in the figure, the utility model discloses an anti-wear planetary speed reducer, which includes a speed reducer housing 1 and a motor 4. The speed reducer housing 1 includes a front housing 11 and a rear housing 12 that are fixedly connected to each other. Among them, an internal gear ring 2 is integrally formed inside the rear housing 12, and a sun gear 5 is provided at the center inside the internal gear ring 2. The motor 4 is fixed on the rear housing 12, and the output shaft 7 of the motor 4 extends into the rear housing 12 and is fixedly connected to the sun gear 5. Three planetary gears 6 are meshed between the sun gear 5 and the internal gear ring 2. In addition, an output shaft 7 is rotatably connected to the front housing 11. One end of the output shaft 7 passes through the front housing 11, and the other end is located inside the front housing 11 and is fixedly connected to a planet carrier 8. Three gear shafts 81 for rotatably connecting the three planetary gears 6 are fixedly connected to the planet carrier 8. When the motor 4 drives the sun gear 5 to rotate, the sun gear 5 drives the planetary gears 6 to rotate around the gear shafts 81, and the planetary gears 6 will rotate along the internal gear ring 2 during the rotation process, thereby driving the planet carrier 8 to rotate, so as to realize the rotation of the output shaft 7.

[0026] Among them, the internal gear ring 2 specifically includes a plurality of internal teeth 21, and there is a tooth groove 22 between each adjacent internal teeth 21. The utility model is provided with an oil supply mechanism in six of the tooth grooves 22. These six oil supply mechanisms are arranged at equal circumferential intervals on the internal gear ring 2. An oil storage tank 121 communicated with the oil supply mechanism is arranged inside the rear housing 12. The oil storage tank 121 is annularly arranged around the outside of the oil supply mechanism, and an oil supply port 122 for communicating with the oil storage tank 121 is opened on the upper side of the rear housing 12. The oil supply mechanism is used to make the lubricating oil flow out when the planetary gear 6 crosses the tooth groove 22 where it is located.

[0027] Specifically, as Figure 7 shown, the oil supply mechanism includes an oil passing hole 31, a sealing seat 32, a resisting column 33 and a spring 36. Among them, one end of the oil passing hole 31 is communicated with the oil storage tank 121 and the other end penetrates through the tooth groove 22 to form an oil outlet 37. The resisting column 33 is slidably fitted on the oil outlet 37. One end of the resisting column 33 penetrates into the tooth groove 22, and the other end of the resisting column 33 is fixedly connected to the sealing seat 32. The sealing seat 32 is movably arranged in the oil passing hole 31. The spring 36 is located in the oil passing hole 31 and is used to push the sealing seat 32 to block the oil outlet 37. Further, a limiting platform 38 is arranged at the position of the oil outlet 37 on the internal gear ring 2. The limiting platform 38 is used to abut against the sealing seat 32, and a sealing ring 321 is arranged on the side of the sealing seat 32 facing the limiting platform 38.

[0028] Furthermore, as Figure 8 shown, a plurality of oil passing grooves 331 are axially arranged on the outer side wall of the resisting column 33, and a rubber ball head 34 is fixedly connected to one end of the resisting column 33 located in the tooth groove 22. The rubber ball head 34 is used to avoid damaging the planetary gear 6.

[0029] In addition, in order to abut against the spring 36, an annular abutment 39 is integrally formed in the oil passage hole 31 of the rear housing 12, and the spring 36 is located between the annular abutment 39 and the sealing seat 32. In order to improve the stability of the spring 36, a positioning post 35 for the spring 36 to be sleeved thereon is provided on the sealing seat 32.

[0030] In addition, a plug 9 is provided on the oil supply port 122 of the present utility model.

[0031] The working principle of the present utility model is as follows: The user first injects lubricating oil through the oil supply port 122, and the lubricating oil fills the oil storage tank 121. When the present utility model starts to work, when the planetary gear 6 crosses the tooth groove 22 where the oil supply mechanism is located, the planetary gear 6 will abut against the rubber ball head 34 of the abutting post 33, pushing the abutting post 33 to move towards the inside of the oil passage hole 31. Therefore, the sealing seat 32 is pushed to compress the spring 36 to cancel the sealing of the oil outlet 37. At this time, the lubricating oil flowing from the oil storage tank 121 into the oil passage hole 31 flows out from the oil outlet 37. The oil passage groove 331 on the outer side wall of the abutting post 33 is used for the lubricating oil to flow out. The flowing lubricating oil lubricates the crossed planetary gear 6, and the planetary gear 6 can also drive the lubricating oil to the sun gear 5 and the inner teeth 21 of the entire internal gear ring 2 during rotation. After the planetary gear 6 crosses, the spring 36 drives the sealing seat 32 to reset and re-seal the oil outlet 37, thereby reducing the waste of lubricating oil. The present utility model is convenient for injecting lubricating oil and can achieve a continuous lubricating effect. Therefore, the frequency of adding lubricating oil can be reduced, and the workload of the user can be reduced.

[0032] At the same time, it should be pointed out that the terms used in the present utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An anti-wear planetary speed reducer, comprising a speed reducer housing and a motor, characterized in that: The reducer housing includes a front housing and a rear housing that are fixedly connected to each other, an inner gear ring is integrally formed on the inner side of the rear housing, a sun gear is arranged at the inner center of the inner gear ring, the motor is fixed on the rear housing, the output shaft of the motor extends into the rear housing and is fixedly connected to the sun gear, a plurality of planetary gears are meshed between the sun gear and the inner gear ring, an output shaft is rotatably connected to the front housing, one end of the output shaft passes through the front housing, and the other end is located in the front housing and is fixedly connected to a planet carrier, a gear shaft for the planetary gears to be rotatably connected thereto is arranged on the planet carrier, the inner gear ring includes a plurality of internal teeth, and tooth grooves are arranged between each adjacent internal tooth, an oil supply mechanism is arranged in a part of the tooth grooves, an oil storage tank communicated with the oil supply mechanism is arranged in the rear housing, an oil supply port for communicating with the oil storage tank is arranged on the upper side of the rear housing, and the oil supply mechanism is used to allow lubricating oil to flow out when the planetary gear passes over the tooth groove in which it is located.

2. The anti-wear planetary speed reducer according to claim 1, characterized in that: At least four oil supply mechanisms are equidistantly arranged on the inner gear ring, and the oil storage tank is annularly arranged around the outer side of the oil supply mechanism.

3. An anti-wear planetary speed reducer according to claim 1, characterized in that: The oil supply mechanism includes an oil through hole, a sealing seat, a resist column and a spring. One end of the oil through hole is connected to the oil storage tank and the other end passes through the tooth groove to form an oil outlet. The resist column slides on the oil outlet, one end of the resist column penetrates into the tooth groove, and the other end of the resist column is fixedly connected to the sealing seat. The sealing seat is movably arranged in the oil through hole, and the spring is located in the oil through hole and is used to push the sealing seat to seal the oil outlet.

4. The anti-wear planetary speed reducer according to claim 3, characterized in that: The inner gear ring is provided with a limit platform at the oil outlet position, and the limit platform is used to abut against the sealing seat, and a sealing ring is provided on the side of the sealing seat facing the limit platform.

5. The anti-wear planetary speed reducer according to claim 3, characterized in that: A plurality of oil-passing grooves are axially provided on the outer side wall of the support column, and a rubber ball head is fixedly connected to one end of the support column located in the tooth groove.

6. The anti-wear planetary speed reducer according to claim 3, characterized in that: The rear housing is integrally formed with an annular retaining seat in the oil hole, the spring is located between the annular retaining seat and the sealing seat, and the sealing seat is provided with a positioning column for the spring to be sleeved outside.

7. An anti-wear planetary speed reducer according to claim 1, characterized in that: A plug is provided on the oil supply port.

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