Planet wheel shaft press-fitting device

Abstract

The utility model relates to a planet wheel shaft press-fitting device which comprises a base and a plurality of guide pin shafts, and a plurality of channels with openings in the upper ends are evenly arranged on the edge of the base at intervals. The multiple guide pin shafts are vertically installed in the multiple channels correspondingly, and the multiple guide pin shafts can move up and down in the multiple channels correspondingly till the upper ends of the multiple guide pin shafts extend out of the upper ends of the multiple channels correspondingly or are contained in the multiple channels correspondingly. The utility model has the beneficial effects of simple structure, reasonable design, simple and convenient operation and high efficiency, can realize the accurate and rapid assembly of the planet wheel shaft, and meets the assembly requirement of the drive axle.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear shaft press-fitting, and particularly relates to a planetary gear shaft press-fitting device. Background Art

[0002] The function of the planetary gear assembly in a tractor is to improve the service life and optimize the power transmission efficiency, making the tractor / loader more efficient and reliable during operation. The planetary gears in the planetary gear assembly are connected to the planetary gear carrier by planetary gear shafts. There are multiple planetary gear shafts in each planetary gear assembly, and the assembly of the planetary gear shafts belongs to the core technology. At present, in the prior art, the assembly and positioning of the planetary gear shafts are inaccurate and the efficiency is low. Summary of the Utility Model

[0003] The utility model provides a planetary gear shaft press-fitting device, aiming to solve the problems in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A planetary gear shaft press-fitting device includes a base and a plurality of guide pins. A plurality of channels with open upper ends are evenly spaced at the edge of the base; the plurality of guide pins are respectively vertically installed in the plurality of channels, and the plurality of guide pins can respectively move up and down in the plurality of channels until their upper ends respectively extend outside the upper ends of the plurality of channels or are received in the plurality of channels.

[0006] The beneficial effect of the utility model is as follows: During the press-fitting process, first, the upper ends of the plurality of guide pins respectively extend outside the upper ends of the plurality of channels; then, a gasket, a planetary gear, and a planetary gear carrier are sequentially placed on the base from bottom to top, so that the upper ends of the plurality of guide pins extend into the mounting holes on the planetary gear; finally, the lower ends of the plurality of planetary gear shafts are respectively inserted into the plurality of through holes on the planetary gear carrier, and at the same time, an external force is used to press down the plurality of planetary gear shafts to press the plurality of planetary gear shafts into the through holes on the planetary gear, completing the press-fitting.

[0007] The structure of the utility model is simple and the design is reasonable. It can achieve the precise assembly and rapid assembly of the planetary gear shafts, meet the assembly requirements of the drive axle, is easy to operate, and has high efficiency.

[0008] On the basis of the above technical solution, the utility model can be further improved as follows.

[0009] Further, elastic members are respectively installed in the plurality of channels, and both ends of the plurality of elastic members respectively abut against the lower ends of the plurality of channels and the lower ends of the plurality of guide pins.

[0010] The beneficial effects of adopting the above further solution are as follows: the structure is simple and reasonably designed. The elasticity of multiple elastic members enables the upper ends of multiple guiding pin shafts to naturally extend outside the upper ends of multiple channels. At the same time, during the downward pressing process of multiple planetary gear shafts, multiple guiding pin shafts move downward naturally, and after the press-fitting is completed, multiple guiding pin shafts can naturally return to their original positions, making the press-fitting more convenient.

[0011] Further, multiple said channels are respectively in the shape of round holes with a thinner upper end and a thicker lower end, and multiple said guiding pin shafts are respectively in the shape of cylinders with a thinner upper end and a thicker lower end. Their thinner ends respectively pass through the thinner ends of multiple said channels, and their thicker ends respectively abut against the thicker ends of multiple said channels.

[0012] The beneficial effects of adopting the above further solution are as follows: the structure is simple and reasonably designed. By utilizing the particularity of the structures of multiple channels and multiple guiding pin shafts, it can effectively prevent multiple guiding pin shafts from slipping off multiple channels.

[0013] Further, multiple said elastic members are respectively springs.

[0014] The beneficial effects of adopting the above further solution are as follows: the structure is simple and reasonably designed. By using multiple springs, multiple guiding pin shafts can be naturally compressed or returned to their original positions, making the press-fitting convenient.

[0015] Further, positioning grooves are respectively provided at the lower ends of multiple said guiding pin shafts, and the upper ends of multiple said springs respectively extend into multiple said positioning grooves and respectively abut against multiple said positioning grooves.

[0016] The beneficial effects of adopting the above further solution are as follows: the structure is simple and reasonably designed. By providing positioning grooves at the lower ends of multiple guiding pin shafts, multiple springs can be more stably matched with multiple guiding pin shafts.

[0017] Further, the lower ends of multiple said channels are respectively open, and multiple plug members are respectively installed; the lower ends of multiple said elastic members respectively abut against multiple said plug members.

[0018] The beneficial effects of adopting the above further solution are as follows: the structure is simple and reasonably designed. By using multiple plug members to respectively seal the lower ends of multiple channels, the assembly is more convenient.

[0019] Further, multiple said plug members are respectively detachably connected to the lower ends of multiple said channels.

[0020] The beneficial effects of adopting the above further solution are as follows: the structure is simple and reasonably designed. By using multiple plug members to respectively seal the lower ends of multiple channels, the assembly is more convenient.

[0021] Further, multiple said plug members are respectively plug caps, and multiple said plug caps are respectively threadedly connected to the lower ends of multiple said channels.

[0022] The beneficial effects of adopting the above further solution are that the structure is simple and the design is reasonable. By using the threaded connections between multiple plug caps and the lower ends of multiple channels, it is convenient to disassemble and assemble each component.

[0023] Further, the base is a circular base, and the number of the channels is three. The three channels are evenly spaced along the circumferential direction of the base.

[0024] The beneficial effects of adopting the above further solution are that the shape of the base and the number of channels are reasonably designed, so that the multiple channels correspond to the multiple through holes on the planetary gear one by one, which is convenient for press-fitting.

[0025] Further, a through hole is provided at the center of the base, and the multiple channels are enclosed around the through hole.

[0026] The beneficial effects of adopting the above further solution are that the multiple channels are reasonably distributed, so that the multiple channels correspond to the multiple through holes on the planetary gear one by one, which is convenient for press-fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the assembly drawing of the present utility model;

[0028] Figure 2 is the sectional view of the base in the present utility model;

[0029] Figure 3 is the corrosion diagram of the base in the present utility model;

[0030] Figure 4 is the structural schematic diagram of the guide pin shaft in the present utility model;

[0031] Figure 5 is the structural schematic diagram of the plug cap in the present utility model;

[0032] Figure 6 is the sectional view of the planet gear carrier and the planetary gear in the present utility model;

[0033] Figure 7 is the top view of the planet gear carrier and the planetary gear in the present utility model;

[0034] Figure 8 is the structural schematic diagram of the planet gear carrier placed above the press-fitting device in the present utility model;

[0035] Figure 9 is the structural schematic diagram of the planet gear carrier and the planetary gear placed on the press-fitting device in the present utility model;

[0036] Figure 10 is the structural schematic diagram of the planetary gear assembly placed on the press-fitting device in the present utility model;

[0037] Figure 11This is a schematic structural diagram of the planetary gear assembly after press-fitting in the present utility model.

[0038] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0039] 1. Base; 2. Guide pin shaft; 3. Spring; 4. Plug cap; 5. Gasket; 6. Planetary gear; 7. Planetary gear carrier; 8. Planetary gear shaft. Specific embodiments

[0040] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the attached drawings, and are 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, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0043] The present utility model will be described in detail below with reference to the attached drawings and in conjunction with embodiments.

[0044] Embodiment 1

[0045] As Figures 1 to 11As shown in the figure, this embodiment provides a planetary gear shaft press-fitting device, including a base 1 and a plurality of guiding pin shafts 2. A plurality of channels with open upper ends are evenly spaced at the edge of the base 1; the plurality of guiding pin shafts 2 are respectively vertically installed in the plurality of channels, and the plurality of guiding pin shafts 2 can respectively move up and down in the plurality of channels until their upper ends respectively extend outside the upper ends of the plurality of channels or are received in the plurality of channels.

[0046] During the press-fitting process, first, the upper ends of the plurality of guiding pin shafts 2 respectively extend outside the upper ends of the plurality of channels; then, after assembling the gasket 5, planetary gear 6, and planetary gear carrier 7 in the planetary gear assembly and placing them on the base 1, the upper ends of the plurality of guiding pin shafts 2 extend into the mounting holes on the planetary gear 6; finally, the lower ends of the plurality of planetary gear shafts 8 are respectively inserted into the plurality of through holes on the planetary gear carrier 7, and at the same time, the plurality of planetary gear shafts 8 are pressed downward by an external force to press the plurality of planetary gear shafts 8 into the through holes on the planetary gear 6, completing the press-fitting.

[0047] This embodiment has a simple structure and reasonable design, can achieve precise and rapid assembly of the planetary gear shaft, meet the assembly requirements of the drive axle, is easy to operate, and has high efficiency.

[0048] Embodiment 2

[0049] Based on Embodiment 1, in this embodiment, elastic members are respectively installed in the plurality of channels, and both ends of the plurality of elastic members respectively abut against the lower ends of the plurality of channels and the lower ends of the plurality of guiding pin shafts 2.

[0050] This solution has a simple structure and reasonable design. The elasticity of the plurality of elastic members enables the upper ends of the plurality of guiding pin shafts 2 to naturally extend outside the upper ends of the plurality of channels; at the same time, during the downward pressing of the plurality of planetary gear shafts, the plurality of guiding pin shafts 2 can naturally move downward, and after the press-fitting is completed, the plurality of guiding pin shafts 2 can naturally return to their positions, making the press-fitting more convenient.

[0051] Embodiment 3

[0052] Based on Embodiment 2, in this embodiment, the plurality of channels are respectively in the shape of round holes with a thin upper end and a thick lower end, and the plurality of guiding pin shafts 2 are respectively in the shape of cylinders with a thin upper end and a thick lower end. Their thin ends respectively pass through the thin ends of the plurality of channels, and their thick ends respectively abut against the thick ends of the plurality of channels.

[0053] This solution has a simple structure and reasonable design. The special nature of the structures of the plurality of channels and the plurality of guiding pin shafts 2 can effectively prevent the plurality of guiding pin shafts 2 from slipping off the plurality of channels.

[0054] Or, the upper ends of the plurality of elastic members are respectively fixedly connected to the lower ends of the plurality of guiding pin shafts 2. This solution can also prevent the plurality of guiding pin shafts 2 from slipping off the base 1.

[0055] Example 4

[0056] On the basis of any one of Embodiment 2 to Embodiment 3, in this embodiment, the plurality of elastic members are respectively springs 3.

[0057] This solution has a simple structure and reasonable design. By using a plurality of springs 3, the plurality of guide pins 2 can be naturally compressed or reset, and the press-fitting is convenient.

[0058] Based on the above solution, the plurality of springs 3 are respectively located in the plurality of channels, and their two ends are respectively in contact with the lower ends of the plurality of guide pins 2 and the lower ends of the plurality of channels.

[0059] Preferably, in this embodiment, the plurality of springs 3 are respectively preferably rectangular springs.

[0060] The plurality of guide pins 2 are designed as stepped shafts to prevent the force from disengaging from the base 1, and an inner hole is designed at the bottom end to realize the top positioning of the rectangular spring. During use, the guide pin 2 moves up and down by the expansion and contraction of the rectangular spring, so as to accurately position the planet gear carrier and realize the accurate assembly of the planet gear shaft.

[0061] Example 5

[0062] On the basis of Example 4, in this embodiment, positioning grooves are respectively provided at the lower ends of the plurality of guide pins 2, and the upper ends of the plurality of springs 3 respectively extend into the plurality of positioning grooves and are respectively in contact with the plurality of positioning grooves.

[0063] This solution has a simple structure and reasonable design. By providing positioning grooves at the lower ends of the plurality of guide pins 2, the plurality of springs 3 can be more stably matched with the plurality of guide pins 2.

[0064] Preferably, in this embodiment, the plurality of positioning grooves are respectively preferably circular grooves.

[0065] Example 6

[0066] On the basis of any one of Embodiment 2 to Embodiment 5, in this embodiment, the lower ends of the plurality of channels are respectively open, and a plurality of plug members are respectively installed; the lower ends of the plurality of elastic members are respectively in contact with the plurality of plug members.

[0067] This solution has a simple structure and reasonable design. By using a plurality of plug members to respectively seal the lower ends of the plurality of channels, the assembly is more convenient.

[0068] Example 7

[0069] On the basis of Example 6, in this embodiment, the plurality of plug members are respectively detachably connected to the lower ends of the plurality of channels.

[0070] This solution has a simple structure and a reasonable design. By using multiple plugging parts to seal the lower ends of multiple channels respectively, the assembly is more convenient.

[0071] Embodiment 8

[0072] Based on Embodiment 7, in this embodiment, the multiple plugging parts are respectively plug caps 4, and the multiple plug caps 4 are respectively threadedly connected to the lower ends of the multiple channels.

[0073] This solution has a simple structure and a reasonable design. By using the threaded connection between the multiple plug caps 4 and the lower ends of the multiple channels, it is convenient to disassemble and assemble each component.

[0074] Based on the above solution, threads are respectively provided on the multiple plug caps 4, threads are respectively provided at the lower ends of the multiple channels, and the multiple plug caps 4 are respectively threadedly connected to the lower ends of the multiple channels.

[0075] Alternatively, screws can also be used to replace the above plug caps 4.

[0076] Embodiment 9

[0077] Based on the above embodiments, in this embodiment, the base 1 is a circular base 1, the number of the channels is three, and the three channels are evenly spaced along the circumferential direction of the base 1.

[0078] The shape of the base 1 and the design of the number of channels are reasonable, so that the multiple channels correspond to the multiple through holes on the planetary gear one by one, which is convenient for press-fitting.

[0079] Based on the above solution, the number of the above channels corresponds to the number of the through holes on the planetary gear one by one.

[0080] Embodiment 10

[0081] Based on the above embodiments, in this embodiment, a through hole is provided at the center of the base 1, and the multiple channels are enclosed around the through hole.

[0082] The multiple channels are reasonably distributed, so that the multiple channels correspond to the multiple through holes on the planetary gear one by one, which is convenient for press-fitting.

[0083] The working principle of the present utility model is as follows:

[0084] During the press-fitting process, first, the upper ends of the multiple guide pins 2 respectively extend outside the upper ends of the multiple channels; then, after the gasket 5, the planetary gear 6, and the planetary gear carrier 7 in the planetary gear assembly are assembled, they are placed on the base 1, so that the upper ends of the multiple guide pins 2 extend into the mounting holes on the planetary gear 6; finally, the lower ends of the multiple planetary gear shafts 8 are respectively inserted into the multiple through holes on the planetary gear carrier 7, and at the same time, an external force is used to press down the multiple planetary gear shafts 8 to press the multiple planetary gear shafts 8 into the through holes on the planetary gear 6 to complete the press-fitting.

[0085] The purpose of the present utility model is to provide a planetary gear shaft press-fitting device that is simple, fast, and convenient to operate. By designing a special base, a guiding pin shaft, and a plug cap, and adopting a guiding pin shaft moving structure, the guiding pin shaft moves up and down driven by the expansion and contraction of a rectangular spring, thereby accurately positioning the planetary gear carrier and achieving the accurate assembly of the planetary gear shaft.

[0086] Compared with the prior art, the present utility model has the following beneficial effects:

[0087] 1. It can achieve the accurate and rapid assembly of the planetary gear shaft, meeting the assembly requirements of the drive axle;

[0088] 2. The use process is fast and simple;

[0089] 3. The use process is safe and reliable.

[0090] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0091] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0092] 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 principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A planetary gear shaft press-fitting device, characterized in that: It includes a base (1) and a plurality of guide pin shafts (2). A plurality of channels with open upper ends are evenly spaced along the edge of the base (1). A plurality of the guide pin shafts (2) are respectively vertically installed in the plurality of channels, and the plurality of guide pin shafts (2) can respectively move up and down in the plurality of channels until their upper ends respectively extend outside the upper ends of the plurality of channels or are received in the plurality of channels. Elastic members are respectively installed in the plurality of channels, and both ends of the plurality of elastic members respectively abut against the lower ends of the plurality of channels and the lower ends of the plurality of guide pin shafts (2). The plurality of channels are respectively in the shape of round holes with a thin upper end and a thick lower end, and the plurality of guide pin shafts (2) are respectively in the shape of cylinders with a thin upper end and a thick lower end. Their thin ends respectively pass through the thin ends of the plurality of channels, and their thick ends respectively abut against the thick ends of the plurality of channels. The lower ends of the plurality of channels are respectively open, and a plurality of blocking members are respectively installed. The lower ends of the plurality of elastic members respectively abut against the plurality of blocking members.

2. The planetary gear shaft press-fitting device according to claim 1, characterized in that: The plurality of elastic members are respectively springs (3).

3. The planetary gear shaft press-fitting device according to claim 2, wherein: Positioning grooves are respectively provided at the lower ends of the plurality of guide pin shafts (2), and the upper ends of the plurality of springs (3) respectively extend into the plurality of positioning grooves and respectively abut against the plurality of positioning grooves.

4. The planetary gear shaft press-fitting device according to claim 1, characterized in that: The plurality of blocking members are respectively detachably connected to the lower ends of the plurality of channels.

5. The planetary gear shaft press-fitting device according to claim 4, characterized in that: The plurality of blocking members are respectively plug caps (4), and the plurality of plug caps (4) are respectively threadedly connected to the lower ends of the plurality of channels.

6. The planetary gear shaft press-fitting device according to any one of claims 1-5, characterized in that: The base (1) is a circular base (1), and the number of the channels is three. The three channels are evenly spaced along the circumference of the base (1).

7. The planetary gear shaft press-fitting device according to any one of claims 1-5, characterized in that: A through hole is provided at the center of the base (1), and the plurality of channels are enclosed around the through hole.

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