A planetary gear pin for a gearbox

Abstract

This utility model discloses a planetary gear pin for a gearbox, comprising: a planetary carrier, four through holes equally spaced on the inner and outer sides of the planetary carrier, and three pin holes equally spaced on the outer sides of each through hole. A pin body penetrates through one of the through holes. A planetary gear body is fixedly connected to one end of the pin body, and a fixing block is provided at the other end of the pin body. A mating block is fixedly connected to both the pin body and the fixing block near their ends, and a mating groove is provided near the ends of both the pin body and the fixing block. The pin body is inserted into the through hole corresponding to the planetary carrier at the other end. After insertion, the pin body needs to be fixed to prevent loosening and detachment. A limiting sleeve can penetrate the interior of the pin body, and the pin at one end of the limiting sleeve, along with the mating block and the mating groove, can be inserted into the pin body to achieve the mating installation operation.

Description

Technical Field

[0001] This utility model relates to the field of planetary gear pin technology, and in particular to a planetary gear pin for a gearbox. Background Technology

[0002] The planetary gear pin is an important component that connects the planetary gears to the planetary carrier. It allows the planetary gears to rotate around their own axes while also rotating around the axes of other gears along with the planetary carrier, thus enabling complex transmission ratio changes.

[0003] Currently, planetary gear pins are generally interference-fitted into the planetary carrier. During planetary gear transmission, the planetary gear pins are prone to loosening or even falling off due to stress and vibration. Traditional methods do not have a good fixing method, which has always caused inconvenience and affected the performance. Utility Model Content

[0004] The purpose of this utility model is to provide a planetary gear pin shaft for a gearbox, which solves the problem that the planetary gear pin shaft is prone to loosening or even falling off during the planetary gear transmission process due to the influence of force and vibration.

[0005] To achieve the above objectives, a planetary gear pin shaft for a gearbox is provided, comprising: a planetary carrier, wherein four through holes are equidistantly formed on the inner and outer sides of the planetary carrier, and a plurality of pin holes are correspondingly formed on the outer sides of the through holes, wherein the number of pin holes is three and they are equidistantly distributed, a pin shaft body penetrates through the interior of one of the through holes, a planetary gear body is fixedly connected to one end of the pin shaft body, and a fixing block is provided at the other end of the pin shaft body, and a mating block is fixedly connected to both the pin shaft body and the fixing block near their ends, and a mating groove is formed on both the pin shaft body and the fixing block near their ends, the mating block and the mating groove being inserted into each other, and a limit sleeve is fixedly connected to one end of the fixing block.

[0006] As a preferred embodiment of this utility model, one end of the fixing block is fixedly connected to a pin, and the pin and the main body of the pin shaft are inserted into each other.

[0007] As a preferred technical solution of this utility model, a plurality of pins are inserted through the inner and outer sides of the limiting sleeve, and the pins are internally threaded.

[0008] As a preferred embodiment of this utility model, a rectangular nut is fixedly connected to the center of the inner part of the pin rod.

[0009] As a preferred embodiment of this utility model, a support spring is fixedly connected to one end of the rectangular nut, and a push rod passes through the interior of the rectangular nut.

[0010] As a preferred embodiment of this utility model, one end of the support spring is fixedly connected to the push rod.

[0011] As a preferred embodiment of this utility model, a small bolt is fitted inside the pin rod.

[0012] As a preferred embodiment of this utility model, one end of the small bolt is provided with a movable rectangular block for buffering, and the movable rectangular block and the rectangular nut are inserted into each other.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] 1. This utility model comprises: a pin shaft body, a limiting sleeve, a pin post, and pin rods. One end of the pin shaft body is connected to the planetary gear body, while the other end is inserted into the corresponding through hole of the planetary carrier. After insertion, the pin shaft body needs to be fixed to prevent loosening and falling off. At this time, the limiting sleeve can penetrate the interior of the pin shaft body, and the pin post, mating block, and mating groove at one end of the limiting sleeve can be inserted into the pin shaft body to achieve the mating installation operation. After installation, several pin rods on one side of the limiting sleeve can be inserted into the pin holes to achieve the installation operation.

[0015] 2. This utility model is equipped with: a pin, a nut, a movable rectangular block, and a small bolt. When disassembly is required, the pin presses against the movable rectangular block and retracts it into the small bolt. A spring is provided between the inner wall of the small bolt and the movable rectangular block to provide support. When the small bolt is fully threaded with the pin, the spring can elastically extend the movable rectangular block, which engages with the rectangular nut to lock the small bolt and prevent rotation. At this time, both the small bolt and the pin are clamped and fixed to the planetary carrier on both sides, which can effectively prevent loosening.

[0016] Additional aspects and advantages of this 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

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional structural diagram of a planetary gear pin shaft for a gearbox according to the present invention.

[0019] Figure 2 This is a disassembled structural diagram of the main body and fixing block of the planetary gear pin shaft of the gearbox according to the present invention;

[0020] Figure 3 This is a cross-sectional view of the pin rod of a planetary gear pin shaft in a gearbox according to the present invention;

[0021] Figure 4 This is an exploded view of the pin and small bolt of a planetary gear pin shaft for a gearbox according to this utility model.

[0022] Legend:

[0023] The components are as follows: 1. Planetary carrier; 2. Through hole; 3. Pin hole; 4. Limiting sleeve; 5. Planetary gear body; 6. Pin body; 7. Fixing block; 8. Pin post; 9. Mating block; 10. Mating groove; 11. Pin rod; 12. Internal thread; 13. Rectangular nut; 14. Support spring; 15. Push rod; 16. Movable rectangular block; 17. Small bolt. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model discloses a planetary gear pin shaft for a gearbox, comprising: a planetary carrier 1, with four through holes 2 equidistantly spaced on the inner and outer sides of the planetary carrier 1, and a number of pin holes 3 corresponding to the outer sides of the through holes 2, the number of pin holes 3 being three and equidistantly distributed, a pin shaft body 6 penetrating through the interior of one through hole 2, one end of the pin shaft body 6 being connected to the planetary gear body 5, and the other end being inserted into the corresponding through hole 2 of the planetary carrier 1. After insertion, the pin shaft body 6 needs to be fixed to prevent loosening and falling off. One end of the pin shaft body 6 is fixedly connected to the planetary gear body 5, and the other end of the pin shaft body 6 is provided with a fixing block 7. Both the pin shaft body 6 and the fixing block 7 are fixedly connected to mating blocks 9 near their ends, and both the pin shaft body 6 and the fixing block 7 are provided with mating grooves 10 near their ends, the mating blocks 9 and the mating grooves 10 being inserted into each other, and one end of the fixing block 7 is fixedly connected to a limit sleeve block 4.

[0026] One end of the fixing block 7 is fixedly connected to a pin post 8, which passes through the interior of the main body 6 of the pin shaft through the limiting sleeve block 4. The pin post 8 at one end of the limiting sleeve block 4, the mating block 9, and the mating groove 10 are inserted into the main body 6 to achieve the mating installation operation. The pin post 8 and the main body 6 are inserted into each other. Several pin rods 11 pass through the inside and outside of the limiting sleeve block 4. Several pin rods 11 on one side of the limiting sleeve block 4 are inserted into the pin holes 3 to achieve the installation operation. The pin rods 11 have internal threads 12, and a rectangular nut is fixedly connected to the center of the pin rods 11. 13. A support spring 14 is fixedly connected to one end of a rectangular nut 13. A push rod 15 passes through the inside of the rectangular nut 13. One end of the support spring 14 is fixedly connected to the push rod 15. A small bolt 17 is sleeved inside the pin rod 11 to limit the position of the limiting sleeve 4. The small bolt 17 is engaged with the internal thread 12 of the pin rod 11 to achieve thread fixation. A movable rectangular block 16 is buffered at one end of the small bolt 17. The movable rectangular block 16 is engaged with the rectangular nut 13 to lock the movable rectangular block 16. The movable rectangular block 16 and the rectangular nut 13 are inserted and engaged.

[0027] Working principle: In use, one end of the pin shaft body 6 is connected to the planetary gear body 5, while the other end is inserted into the corresponding through hole 2 of the planetary carrier 1. After insertion, the pin shaft body 6 needs to be fixed to prevent loosening and falling off. This is achieved by using a limiting sleeve 4 to penetrate the interior of the pin shaft body 6. The limiting sleeve 4 is then inserted into the pin shaft body 6 via a pin post 8, a mating block 9, and a mating groove 10. After installation, several pins 11 on one side of the limiting sleeve 4 are inserted into the pin holes 3 to complete the installation. After installation, the limiting sleeve 4 is positioned, and a small bolt 17 engages with the internal thread 12 of the pin post 11 for threaded fixation. During the threaded installation of the small bolt 17 and the pin post 11, the pin post 8 needs to be extended. The movable rectangular block 16 is pressed against the small bolt 17, which is then retracted into the small bolt 17. This allows the small bolt 17 to be fully threaded into the pin rod 11. When disassembly is required, the small bolt 16 is also pressed against the small bolt 17 by the pin post 8. A spring is provided between the inner wall of the small bolt 17 and the movable rectangular block 16 to provide support. After the small bolt 17 is fully threaded into the pin rod 11, the spring can elastically extend the movable rectangular block 16, which engages with the rectangular nut 13 to lock the small bolt 17 and prevent rotation. At this time, both sides of the small bolt 17 and the pin rod 11 are clamped and fixed to the planetary carrier 1, which can effectively prevent loosening. The spring structure is common and can be adopted from existing technology, so it will not be described further in this utility model.

[0028] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A gearbox planetary pin axle comprising: The planetary carrier (1) is characterized in that four through holes (2) are equidistantly provided on the inner and outer sides of the planetary carrier (1), and a number of pin holes (3) are provided on the outer side of the through holes (2). The number of pin holes (3) is three and they are equidistantly distributed. A pin shaft body (6) passes through the interior of one side of the through hole (2). A planetary gear body (5) is fixedly connected to one end of the pin shaft body (6). A fixing block (7) is provided at the other end of the pin shaft body (6). A mating block (9) is fixedly connected to both the pin shaft body (6) and the fixing block (7) near their ends. A mating groove (10) is provided to both the pin shaft body (6) and the fixing block (7) near their ends. The mating block (9) and the mating groove (10) are inserted into each other. A limit sleeve block (4) is fixedly connected to one end of the fixing block (7).

2. A gearbox planetary pin axle according to claim 1, characterized in that One end of the fixing block (7) is fixedly connected to a pin (8), and the pin (8) and the main body of the pin shaft (6) are inserted into each other.

3. A gearbox planetary pin axle according to claim 1, characterized in that, The limiting sleeve (4) has several pins (11) running through its inner and outer sides, and the pins (11) have internal threads (12).

4. A gearbox planetary pin axle according to claim 3, wherein, A rectangular nut (13) is fixedly connected to the inside of the pin (11).

5. A gearbox planetary pin axle according to claim 4, characterised in that, A support spring (14) is fixedly connected to one end of the rectangular nut (13), and a push rod (15) passes through the inside of the rectangular nut (13).

6. A gearbox planetary pin axle according to claim 5, characterised in that, One end of the support spring (14) is fixedly connected to the push rod (15).

7. A gearbox planetary pin axle according to claim 3, wherein, The pin (11) is fitted with a small bolt (17).

8. A gearbox planetary pin axle according to claim 7, characterised in that, One end of the small bolt (17) is buffered with a movable rectangular block (16), which is connected to the rectangular nut (13).

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