Axial positioning device for last-stage planet carrier of walking speed reducer of engineering machinery

Abstract

The utility model discloses an axial positioning device for a last-stage planet carrier of a walking speed reducer of engineering machinery, relates to the technical field of wheel-side planet reducers of engineering machinery, and aims to solve the technical problems of high processing difficulty and high production cost of an existing limiting baffle. The positioning of the final-stage planet carrier of the engineering machinery speed reducer and the optimization of the abrasion condition of the limiting baffle can be achieved. According to the axial positioning device for the final-stage planet carrier of the engineering machinery walking speed reducer, a limiting baffle is installed on the final-stage planet carrier in an interference fit mode, and a deep groove ball bearing is installed on a final-stage sun gear in a clearance fit mode; the right end face of the limiting baffle makes contact with the left end face of the inner ring of the deep groove ball bearing so that axial positioning of the last stage can be achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of planetary reducers for engineering machinery wheels, and in particular to an axial positioning device for the final stage planetary carrier of a traveling reducer for engineering machinery. It is applicable not only to engineering machinery, but also to the gear transmission industry in rail transit, wind power and aviation. Background Technology

[0002] Currently, travel reducers are mainly used in the travel systems of highway vehicles and tracked vehicles. Due to the compact structure and large transmission ratio of compound planetary gears, most reducer manufacturers adopt this transmission structure.

[0003] Specifically, the travel reducer, as a core component of the travel device in engineering machinery, directly affects the performance and efficiency of the entire piece of equipment. The travel reducer is characterized by its compact structure, high power density, and large impact load capacity. During operation, it operates in harsh environments and is a multi-stage, multi-condition, low-speed, heavy-duty gear transmission device.

[0004] Therefore, during the design process, it is necessary not only to ensure the reliability of the strength and rigidity of the gears, but also to ensure the rationality of the overall structure. Utility Model Content

[0005] The purpose of this utility model is to provide an axial positioning device for the final stage planetary carrier of a traveling reducer for engineering machinery, which solves the technical problems of high processing difficulty and high production cost of existing limit baffles. It can achieve the positioning of the final stage planetary carrier of the engineering machinery reducer and optimize the wear of its limit baffle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An axial positioning device for the final stage planetary carrier of a traveling reducer for engineering machinery includes: a final stage planetary carrier, a limiting baffle, a deep groove ball bearing, and a final stage sun gear;

[0008] The limiting baffle is installed on the last stage planetary carrier by an interference fit, and the deep groove ball bearing is installed on the last stage sun gear by a clearance fit.

[0009] The right end face of the limiting baffle contacts the left end face of the inner ring of the deep groove ball bearing to achieve axial positioning of the final stage.

[0010] Compared with existing technologies, the axial positioning device for the final stage planetary carrier of the engineering machinery travel reducer described in this utility model has the following advantages:

[0011] In the axial positioning device for the final stage planetary carrier of the engineering machinery travel reducer provided by this utility model, the limiting baffle is installed on the final stage planetary carrier through an interference fit, and the deep groove ball bearing is installed on the final stage sun gear through a clearance fit; the right end face of the limiting baffle and the left end face of the inner ring of the deep groove ball bearing are in contact with each other to achieve axial positioning of the final stage; therefore, the deep groove ball bearing and the limiting baffle are used to cooperate as a load between the final stage sun gear and the final stage planetary carrier, thereby achieving the purpose of axial positioning, effectively avoiding the phenomenon of high-frequency wear of the limiting baffle due to relative sliding during equipment operation, and solving the technical problems of high processing difficulty and high production cost of existing limiting baffles. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the final stage planetary carrier axial positioning device of the engineering machinery travel reducer provided in this embodiment of the utility model.

[0013] Figure label:

[0014] 1-Last stage planetary carrier; 2-Limit baffle; 3-Deep groove ball bearing; 4-Last stage sun gear. Detailed Implementation

[0015] In the current technology, many engineering machinery travel reducers use limit baffles to position the final stage planetary carrier axially; however, the limit baffles slide relative to each other during overall operation, so it is necessary to ensure high hardness and good roughness, which is troublesome in processing, inspection and assembly, and the production cost is high.

[0016] For ease of understanding, the axial positioning device for the final stage planetary carrier of the engineering machinery travel reducer provided in this embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0017] This utility model embodiment provides an axial positioning device for the final stage planetary carrier of a traveling reducer for engineering machinery, such as... Figure 1 As shown, it includes: a final stage planetary carrier 1, a limiting baffle 2, a deep groove ball bearing 3, and a final stage sun gear 4;

[0018] The limit baffle 2 is installed on the last stage planetary carrier 1 by interference fit, and the deep groove ball bearing 3 is installed on the last stage sun gear 4 by clearance fit.

[0019] The right end face of the limiting baffle 2 contacts the left end face of the inner ring of the deep groove ball bearing 3 to achieve axial positioning of the last stage and avoid wear on the end face of the limiting baffle 2 and the last stage sun gear 4, thereby effectively improving the service life of the whole machine.

[0020] Compared with the prior art, the axial positioning device for the final stage planetary carrier of the engineering machinery travel reducer described in this embodiment of the invention has the following advantages:

[0021] In the axial positioning device for the final stage planetary carrier of the engineering machinery travel reducer provided in this embodiment of the utility model, the limiting baffle 2 is installed on the final stage planetary carrier 1 through an interference fit, and the deep groove ball bearing 3 is installed on the final stage sun gear 4 through a clearance fit; the right end face of the limiting baffle 2 is in contact with the left end face of the inner ring of the deep groove ball bearing 3 to achieve axial positioning of the final stage; therefore, the deep groove ball bearing 3 and the limiting baffle 2 are used to cooperate as the bearing between the final stage sun gear 4 and the final stage planetary carrier 1, thereby achieving the purpose of axial positioning, effectively avoiding the phenomenon of high-frequency wear caused by relative sliding of the limiting baffle 2 during equipment operation, and solving the technical problems of high processing difficulty and high production cost of existing limiting baffles.

[0022] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An axial positioning device for the final stage planetary carrier of a traveling reducer for engineering machinery, characterized in that, include: Last stage planetary carrier, limit baffle, deep groove ball bearing, last stage sun gear; The limiting baffle is installed on the last stage planetary carrier by an interference fit, and the deep groove ball bearing is installed on the last stage sun gear by a clearance fit. The right end face of the limiting baffle contacts the left end face of the inner ring of the deep groove ball bearing to achieve axial positioning of the final stage.

Images