A planetary carrier wheel shaft positioning and press-fitting device

Abstract

The present invention provides a planetary carrier wheel shaft positioning and pressing device, which includes a workbench, a positioning and guiding wheel shaft group, a positioning cylinder, a guiding sleeve, a guiding head and a pressing sleeve. This planetary wheel shaft positioning and pressing device can achieve the overall positioning and pressing of four planetary wheel shafts, and ensure that the planetary wheel shafts can be pressed into the planetary carrier at a specific radial angle to meet the assembly requirements of the planetary carrier; at the same time, it provides guidance for parts such as planetary wheels and wear-reducing pads in the planetary carrier, avoiding indentations on the surface of the wear-reducing pads. This planetary carrier wheel shaft positioning and pressing device can ensure the successful pressing of the planetary wheel shafts without damaging the mating parts, effectively improve the assembly efficiency, reduce the labor intensity of operators, and improve the pressing quality of the planetary carrier.

Description

Technical Field

[0001] The present invention belongs to the technical field of part assembly, and particularly relates to a planetary carrier wheel shaft positioning and pressing device. Background Art

[0002] At present, for conventional planetary wheel shafts with relatively low technical requirements for planetary carriers, special machines are mostly used for pressing, with relatively high working efficiency. However, for some planetary carriers with complex structures, due to high technical requirements, manual assembly is mostly adopted, which is prone to rework, low working efficiency, high labor intensity, and there is a risk of damaging parts. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] The present invention provides a planetary carrier wheel shaft positioning and pressing device to solve the technical problems of how to quickly and accurately press the planetary wheel shaft into the planetary carrier without damaging the mating parts, facilitating the assembly by operators, improving the working efficiency, and reducing the labor intensity.

[0005] (2) Technical Solutions

[0006] To solve the above technical problems, the present invention provides a planetary carrier wheel shaft positioning and pressing device, which includes a workbench, a positioning and guiding wheel shaft group, a positioning cylinder, a guiding sleeve, a guiding head, and a pressing sleeve. Among them,

[0007] Before pressing, the planetary carrier to be pressed is placed flat on the workbench, and its position is adjusted so that the positioning and guiding wheel shaft group passes through the planetary wheel holes of the planetary carrier. The positioning and guiding wheel shafts are limited to the lowest point, the planetary wheel assembly is placed in the four planetary wheel grooves of the planetary carrier, and then the positioning and guiding wheel shafts are released to pass through all the planetary carriers and planetary wheel assemblies.

[0008] The positioning and guiding wheel shaft group consists of four positioning and guiding wheel shafts, a cross-shaped thin rod, and a spring. Among them, the four positioning and guiding wheel shafts are respectively fixedly connected to the cantilever ends of the cross-shaped thin rod. The cross-shaped thin rod is connected to the workbench through a spring and hangs below the workbench surface. The diameter of the positioning and guiding wheel shaft is smaller than that of the planetary wheel shaft and can freely pass through the four positioning holes of the workbench. Limiting holes are provided on the side walls of the positioning and guiding wheel shafts and the support legs of the workbench. When most of the lower section of the positioning and guiding wheel shaft is pressed into the workbench surface, by inserting a limiting pin into the limiting hole, a small part of the upper section of the positioning and guiding wheel shaft protrudes from the workbench surface for positioning the planetary carrier. When the limiting pin is removed, the positioning and guiding wheel shaft moves upward under the pulling force of the spring, passes through the planetary wheel assembly and the planetary carrier and protrudes a small part, which can provide guidance for the up and down movement of the planetary wheel shaft during pressing and provide positioning for the guiding sleeve.

[0009] The positioning cylinder is connected and positioned with the workbench; guiding grooves that facilitate the up-and-down movement of the seeker are provided around the inner wall of the positioning cylinder. Through the cooperation of the positioning cylinder with the guiding sleeve and the seeker, it is ensured that the planetary gear shaft is press-fitted at a specific angle.

[0010] During press-fitting, the guiding sleeve is placed on the planet carrier and positioned with the positioning guiding wheel shaft. The positioning cylinder is fixed to the workbench through the positioning groove; before placing the planetary gear shaft, the seeker is inserted into the positioning hole of the planetary gear shaft and horizontally placed in the channel formed by the positioning cylinder and the guiding sleeve in this state. The press-fitting sleeve is placed on the planetary gear shaft, waiting for the hydraulic press or waving a copper rod for press-fitting; after press-fitting to a specific position, the positioning cylinder and the seeker are removed upward, the press-fitting sleeve is press-fitted to the final position, and the planet carrier is disengaged from the workbench.

[0011] Furthermore, a wear-reducing pad is placed on each side of each planetary gear assembly in a fitting manner, and the wear-reducing pad is coaxial with the planetary gear assembly; the positioning guiding wheel shaft is limited to the lowest point, and the closely fitting wear-reducing pads and planetary gear assemblies are respectively placed in the four planetary gear grooves of the planet carrier. The positioning guiding wheel shaft is loosened so that the positioning guiding wheel shaft passes through all the planet carriers, planetary gear assemblies, and wear-reducing pads.

[0012] Furthermore, after removing the limit pin, the positioning guiding wheel shaft moves upward under the pulling force of the spring, passes through the wear-reducing pad, the planetary gear assembly, and the planet carrier and protrudes a small part, providing guidance for the up-and-down movement of the planetary gear shaft during press-fitting, avoiding damage to the surface of the wear-reducing pad by the planetary gear shaft, and providing positioning for the guiding sleeve.

[0013] Furthermore, the positioning guiding wheel shafts are respectively welded to the cantilever ends of the cross-shaped thin rods.

[0014] Furthermore, the positioning cylinder is connected and positioned with the four protruding parts located around the workbench through the positioning groove at the bottom.

[0015] Furthermore, the guiding groove is a T-shaped groove.

[0016] (III) Beneficial Effects

[0017] The present invention provides a planetary carrier gear shaft positioning and press-fitting device, including a workbench, a positioning guiding wheel shaft group, a positioning cylinder, a guiding sleeve, a seeker, and a press-fitting sleeve. This planetary gear shaft positioning and press-fitting device can achieve the overall positioning and press-fitting of four planetary gear shafts, and ensure that the planetary gear shaft can be press-fitted into the planet carrier at a specific radial angle, meeting the assembly requirements of the planet carrier; at the same time, it provides guidance for parts such as the planetary gears and wear-reducing pads in the planet carrier, avoiding indentations on the surface of the wear-reducing pads. This planetary carrier gear shaft positioning and press-fitting device can ensure the success of the press-fitting of the planetary gear shaft without damaging the mating parts, effectively improving the assembly efficiency, reducing the labor intensity of operators, and improving the press-fitting quality of the planet carrier. Description of the Drawings

[0018] Figure 1 External structure diagram of the planetary carrier wheel shaft positioning and pressing device according to an embodiment of the present invention;

[0019] Figure 2 Internal structure diagram of the planetary carrier wheel shaft positioning and pressing device according to an embodiment of the present invention. Specific embodiments

[0020] To make the objectives, contents, and advantages of the present invention clearer, the following further describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments.

[0021] This embodiment provides a planetary carrier wheel shaft positioning and pressing device, as shown in Figure 1 and 2 The device includes a workbench 1, a positioning and guiding wheel shaft group 2, a positioning cylinder 3, a guiding sleeve 4, a guiding head 5, and a pressing sleeve 6.

[0022] Before pressing, place the planetary carrier 10 to be pressed flat on the workbench 1, and adjust the position so that the positioning and guiding wheel shaft group 2 passes through the planetary gear holes of the planetary carrier 10. Take out the planetary gear assembly 12, and place a wear-reducing pad 13 on each side of each planetary gear assembly. Adjust the position so that the wear-reducing pad 13 is coaxial with the planetary gear assembly 12. Limit the positioning and guiding wheel shaft 7 to the lowest point, and then place the closely fitted wear-reducing pads 13 and planetary gear assemblies 12 in the four planetary gear grooves of the planetary carrier 10 respectively. Loosen the positioning and guiding wheel shaft 7 so that it passes through all the planetary carriers 10, planetary gear assemblies 12, and wear-reducing pads 13.

[0023] The positioning and guiding wheel shaft group 2 consists of four positioning and guiding wheel shafts 7, a cross-shaped thin rod 8, and a spring 9. Among them, the four positioning and guiding wheel shafts 7 are respectively welded to the cantilever ends of the cross-shaped thin rod 8. The cross-shaped thin rod 8 is connected to the workbench 1 through the spring 9 and is suspended below the tabletop of the workbench 1. The diameter of the positioning and guiding wheel shaft 7 is slightly smaller than the diameter of the planetary gear shaft 11 and can freely pass through the four positioning holes of the workbench 1. Limiting holes are provided on the side walls of the positioning and guiding wheel shafts 7 and the support legs of the workbench 1 for the function of limiting. When most of the lower section of the positioning and guiding wheel shaft 7 is pressed below the tabletop of the workbench 1, by inserting the limit pin into the limiting hole, a small part of the upper section of the positioning and guiding wheel shaft 7 protrudes from the tabletop of the workbench 1 for the positioning of the planetary carrier 10. When the limit pin is removed, the positioning and guiding wheel shaft 7 moves upward under the pulling force of the spring 9, passes through the wear-reducing pad 13, the planetary gear assembly 12, and the planetary carrier 10 and protrudes a small part, which can provide guidance for the up and down movement of the planetary gear shaft 11 during pressing, avoid the surface of the wear-reducing pad 13 from being damaged by the planetary gear shaft 11, and can also provide positioning for the guiding sleeve 4.

[0024] The positioning cylinder 3 is accurately connected and positioned through the positioning grooves at the bottom with the four protruding parts around the workbench 1, facilitating the preparation before the press-fitting of the planet carrier 10 and its disassembly and assembly. Guide grooves are provided around the inner wall of the positioning cylinder 3 to facilitate the up and down movement of the guide head 5. Through the cooperation of the positioning cylinder 3 with the guide sleeve 4 and the guide head 5, it is ensured that the planet gear shaft is press-fitted at a specific angle.

[0025] During press-fitting, place the guide sleeve 4 on the planet carrier 10 and position it with the positioning guide wheel shaft 7, and fix the positioning cylinder 3 to the workbench 1 through the positioning grooves. Before placing the planet gear shaft 11, insert the guide head 5 into the positioning hole of the planet gear shaft 11 and place it horizontally in the channel formed by the positioning cylinder 3 and the guide sleeve 4 in this state. Then place the press-fitting sleeve 6 on the planet gear shaft 11 and wait for the hydraulic press or wave a copper rod to perform press-fitting. After press-fitting to a specific position, remove the positioning cylinder 3 and the guide head 5 upward, then use the press-fitting sleeve 6 to press-fit to the final position, and finally separate the planet carrier 10 from the workbench 1.

[0026] There are four positioning holes on the workbench 1 of this device. The four positioning guide wheel shafts 7 can freely stretch through them, playing the role of positioning the planet carrier 10 and the guide sleeve 4 and guiding the press-fitting of the planet gear shaft 11. There are four protrusions around the workbench 1, which can be fixed to the positioning cylinder 3, and the planet carrier 10 is placed therein and positioned through the positioning guide wheel shafts 7. Four notches are provided at the lower part of the positioning cylinder 3, which can facilitate the placement of parts such as the planet gear assembly 12 and the wear-reducing pad 13; four T-shaped grooves are provided on the inner wall of the positioning cylinder 3, and four rectangular through grooves are provided on the outer wall of the guide sleeve 4, forming four channels to facilitate the up and down movement of the guide head 5, ensuring that the positioning pin hole of the planet gear shaft 11 always faces the set screw hole of the planet carrier 10. Place the guide sleeve 4 on the planet carrier 10, place the planet gear shaft 11 to be press-fitted in the four inner holes of the guide sleeve 4, install the press-fitting sleeve 6 on it, and the planet gear shaft 11 can be press-fitted into the planet carrier 10 by using a hydraulic press or knocking with a copper rod. The planet carrier gear shaft positioning press-fitting device of the present invention can be used for the rapid and accurate positioning press-fitting of the planet carrier gear shaft at a specific angle, can quickly and accurately press-fit the planet gear shaft into the planet carrier, and provides press-fitting guidance to prevent damage to the mating parts during press-fitting. At the same time, the device is simple to disassemble and assemble, convenient to operate, and improves work efficiency.

[0027] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A planetary carrier wheel shaft positioning and press-fitting device, characterized in that The device includes a workbench, a positioning guide wheel shaft group, a positioning cylinder, a guide sleeve, a guide head, and a pressing sleeve; among them, Before pressing, the planetary carrier to be pressed is placed flat on the workbench, and its position is adjusted so that the positioning guide wheel shaft group passes through the planetary gear holes of the planetary carrier; the positioning guide wheel shaft is limited to the lowest point, the planetary gear assembly is placed in the four planetary gear grooves of the planetary carrier, and the positioning guide wheel shaft is loosened so that the positioning guide wheel shaft passes through all the planetary carriers and planetary gear assemblies; The positioning guide wheel shaft group consists of four positioning guide wheel shafts, a cross-shaped thin rod, and a spring; among them, the four positioning guide wheel shafts are respectively fixedly connected to the cantilever ends of the cross-shaped thin rod, the cross-shaped thin rod is connected to the workbench through the spring and hangs under the workbench surface; the diameter of the positioning guide wheel shaft is smaller than that of the planetary gear shaft and can freely pass through the four positioning holes of the workbench; limiting holes are provided on the side wall of the positioning guide wheel shaft and the support legs of the workbench. When most of the lower section of the positioning guide wheel shaft is pressed into the workbench surface, by inserting a limiting pin into the limiting hole, a small part of the upper section of the positioning guide wheel shaft protrudes from the workbench surface for positioning the planetary carrier. When the limiting pin is removed, the positioning guide wheel shaft moves upward under the pulling force of the spring, passes through the planetary gear assembly and the planetary carrier and protrudes a small part, and can provide guidance for the up and down movement of the planetary gear shaft during pressing and provide positioning for the guide sleeve; The positioning cylinder is connected and positioned with the workbench; guiding grooves that facilitate the up and down movement of the guide head are provided around the inner wall of the positioning cylinder. The positioning cylinder ensures that the planetary gear shaft is pressed at a specific angle through the cooperation with the guide sleeve and the guide head; During pressing, the guide sleeve is placed on the planetary carrier and positioned with the positioning guide wheel shaft, and the positioning cylinder is fixed to the workbench through the positioning groove; before placing the planetary gear shaft, the guide head is inserted into the positioning hole of the planetary gear shaft and horizontally placed in the channel formed by the positioning cylinder and the guide sleeve in this state. The pressing sleeve is placed on the planetary gear shaft, waiting for the hydraulic press or waving a copper rod for pressing; after pressing to a specific position, the positioning cylinder and the guide head are removed upward, the pressing sleeve is pressed to the final position, and the planetary carrier is separated from the workbench; On both sides of each planetary gear assembly, a wear-reducing pad is placed in a fitting manner, and the wear-reducing pad is coaxial with the planetary gear assembly; the positioning guide wheel shaft is limited to the lowest point, the closely fitting wear-reducing pads and planetary gear assemblies are respectively placed in the four planetary gear grooves of the planetary carrier, and the positioning guide wheel shaft is loosened so that the positioning guide wheel shaft passes through all the planetary carriers, planetary gear assemblies, and wear-reducing pads; the positioning guide wheel shafts are respectively welded to the cantilever ends of the cross-shaped thin rod.

2. The press-fitting device according to claim 1, characterized in that, After removing the limiting pin, the positioning guide wheel shaft moves upward under the pulling force of the spring, passes through the wear-reducing pad, the planetary gear assembly, and the planetary carrier and protrudes a small part, provides guidance for the up and down movement of the planetary gear shaft during pressing, avoids the surface of the wear-reducing pad being damaged by the planetary gear shaft, and provides positioning for the guide sleeve.

3. The press-fitting device according to claim 1, characterized in that, The positioning cylinder is connected and positioned with the four protruding parts located around the workbench through the positioning groove at the bottom.

4. The press-fitting device according to claim 1, characterized in that The guiding groove is a T-shaped groove.

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