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A Stable and Effective Method for Measuring the Free Clearance of Power Steering Gear

A technology of power steering gear and measurement method, applied in the direction of angle/taper measurement, etc., can solve the problems of poor measurement accuracy and stability, and achieve the effect of saving adjustment time, improving product quality evaluation and design optimization, and stable and accurate free gap measurement.

Active Publication Date: 2022-07-15
东科克诺尔商用车制动技术有限公司
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Problems solved by technology

[0009] In order to solve the problem of poor measurement accuracy and stability of the free clearance of the power steering gear in the prior art, the present invention proposes a stable and effective method for measuring the free clearance of the power steering gear, and realizes a stable and accurate measurement of the free clearance of the power steering gear

Method used

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  • A Stable and Effective Method for Measuring the Free Clearance of Power Steering Gear
  • A Stable and Effective Method for Measuring the Free Clearance of Power Steering Gear

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Embodiment Construction

[0019] Hereinafter, the present invention will be further described with reference to the accompanying drawings.

[0020] like figure 1 , figure 2 As shown in the figure, a stable and effective method for measuring the free clearance of the power steering gear is as follows:

[0021] The setting of the drive device at the input end of the power steering gear: including the mechanical support 3 that can be adjusted in three-dimensional directions, the servo motor 4 is fixed on the mechanical support in combination with the high-precision reducer 5, and the output end of the high-precision reducer 5 is sequentially connected to the bellows coupling. Shaft 6, high-precision torque sensor 7, bellows coupling 6, output connecting shaft 8, the outer end of the output connecting shaft is welded with a spline sleeve 9 matching the input shaft of the steering gear;

[0022] Setting of the fixing fixture of the power steering gear: a fixing fixture 1 of the power steering gear is arr...

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Abstract

The invention proposes a stable and effective method for measuring the free clearance of a power steering gear. First, a reasonable driving device for the input end of the power steering gear, a fixing fixture for the power steering gear, and a steering vertical arm locking device are set up; the measuring method for the free clearance: Fix the power steering gear to the positioning fixture, and the computer controls the rotation of the input end of the power steering gear. When the output end of the power steering gear is close to the neutral position, the steering pendant locking device locks the steering pendant without gap; the computer controls the servo motor to drive the steering gear The input end rotates in two directions respectively, find the position where the input torque is less than 0.1 N·m and set it as the input end center, and drive the input end to rotate slowly in both directions from the neutral center until the pressure difference between the inlet and outlet of the steering gear is in the middle. The pressure difference value of the position is 0.125Mpa higher, draw the angle and pressure difference curve, torque and pressure difference curve, calculate the angle and pressure difference curve from the lowest point of pressure difference to 0.1Mpa, the difference between the angles turned in the two directions and is the free gap.

Description

technical field [0001] The invention belongs to the field of performance detection of power steering gears, and relates to a method for measuring the free clearance of key performance indicators of automotive power steering gears, in particular to a stable and effective method for measuring free clearance of power steering gears. Background technique [0002] The definition of the free clearance of automobile power steering gear is: the output end of the steering gear is rigidly fixed in the middle position, and under the rated working flow, the input shaft of the steering gear rotates when the pressure of the oil inlet of the assembly increases by 0.1MPa in both directions. In principle, the free clearance angle includes the mechanical clearance angle of the steering gear transmission pair and the hydraulic dead zone angle of the rotary valve. [0003] There are the following technical difficulties to realize the measurement of the free clearance of the steering gear: [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/24
CPCG01B5/24
Inventor 陈勇
Owner 东科克诺尔商用车制动技术有限公司
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