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Cycloidal engagement pair with uniform-gap engagement of full hydraulic steering gear and processing method thereof

A technology of cycloidal meshing and steering gear, which is applied in the field of cycloidal meshing pairs and even-gap meshing cycloidal meshing pairs. Effects of inflexibility, long service life, and improved sealing performance

Active Publication Date: 2010-05-19
ZHENJIANG HYDRAULICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, in the non-tied rod hydraulic cycloid pair, the carrying capacity and slewing accuracy are not the goals pursued, so the above-mentioned modification method is not suitable for this type of cycloid pair

Method used

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  • Cycloidal engagement pair with uniform-gap engagement of full hydraulic steering gear and processing method thereof
  • Cycloidal engagement pair with uniform-gap engagement of full hydraulic steering gear and processing method thereof
  • Cycloidal engagement pair with uniform-gap engagement of full hydraulic steering gear and processing method thereof

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Embodiment 1

[0041] This embodiment takes the cycloidal pair in the BZZ full hydraulic steering gear as an example, its basic tooth profile parameters: z p =7r p =34mmr rp = 11.1 mm = 3.8 mm. If the cycloidal wheel adopts positive equidistant plus negative displacement, the design variable is equidistant plus displacement modification, and the objective function is the approximating corner modification. Volume, it can be obtained that Δδ=0.005rad (Δδ is the angle modification amount), and the constraint condition is that the meshing clearance is greater than zero. Design" article, the amount of modification can be obtained by Δr rp =0.0263mmΔr p =-0.0229mm(Δr pIndicates the displacement modification amount). And adopt the even-gap meshing modification of the present invention, the amount of even-gap meshing modification is the average value of the equidistant plus displacement distance cycloid pair tooth side clearance determined through optimization, and the calculation formula is a...

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Abstract

The invention relates to a cycloidal engagement pair with uniform-gap engagement in a full hydraulic steering gear and a processing method thereof, and belongs to the technical field of hydraulic transmission. The cycloidal engagement pair is formed by the matching of a cylindrical pin wheel and a cycloidal gear which form a tie bar-free planetary gear train; the profile of the cycloidal gear is a closed curve determined by a specific curve equation; and when the modification and the generating gear grinding are performed, the radius of a grinding wheel is dressed to be equal to the sum of the radius of the pin wheel and the uniform-gap engagement modification amount to ensure that the central distance between the grinding wheel and a mandrel of a spline is equal to the radius of a pitch circle of the pin wheel. The adoption of the technical scheme of the invention shows that the rotation of a rotor is more flexible. At the same time, the sealing performance is improved, so the effect of attaining two objectives by a single move is achieved. Therefore, the cycloidal engagement pair contributes to solving the problems of inflexible rotation and locking of cycloidal gears of cycloidal pairs of full hydraulic steering gears, and can ensure that the engagement quality is improved and the steering gears work more steadily and longer service life. During the production, only one technological parameter needs to be adjusted, and no equipment is added, so the cycloidal engagement pair is practical and feasible.

Description

technical field [0001] The invention relates to a cycloidal meshing pair in a full hydraulic steering gear (hereinafter referred to as a cycloidal pair), in particular to a cycloidal meshing pair with even clearance meshing, and also relates to a processing method thereof, which belongs to the technical field of hydraulic transmission. Background technique [0002] In 1921, American scholar Myron F.Hill (Jeffrey X.Dong et al.2004) conducted a detailed study on the geometric characteristics of the cycloid tooth profile and the working principle of the cycloid pump, and applied for a patent. In the 1930s, a The first cycloidal hydraulic pump. In 1955, Charing Corporation of the United States first successfully developed a cycloidal hydraulic motor. After several years of research and improvement, it officially put into production in 1960 with the "Chalin" trademark. In 1961, Chalin developed a cycloidal full hydraulic steering gear and applied for a patent. Since the early 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/08B62D3/14
Inventor 焦文瑞刘金龙潘骏翁爱光沈启志王志生徐华伟
Owner ZHENJIANG HYDRAULICS
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