Free clearance detection method and free clearance detection device of recirculating-ball steering gear

A detection method and steering gear technology, applied in the field of steering systems, can solve the problems of poor detection accuracy, inability to accurately control the rotation speed selection of the input shaft 11, etc.

Active Publication Date: 2015-12-23
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
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Problems solved by technology

[0004] However, when the input shaft 11 drives the screw rod 14 to rotate, the torsion bar 12 itself will be twisted and deformed, and when the rotational speed of the input shaft 11 is different, due to the resistance and inertia between the internal components, the torsion bar 12 will produce different degrees of deformation. Therefore, the selection of the rotational speed of the input shaft 11 will have a direct impact on the detection results, and the selection of the rotational speed of the input shaft 11 is often unable to be accurately controlled, which also leads to poor detection accuracy of the free clearance of the aforementioned recirculating ball steering gear

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  • Free clearance detection method and free clearance detection device of recirculating-ball steering gear
  • Free clearance detection method and free clearance detection device of recirculating-ball steering gear
  • Free clearance detection method and free clearance detection device of recirculating-ball steering gear

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Embodiment Construction

[0037] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the accompanying drawings.

[0038] The embodiment of the present invention provides a free gap detection method of a recirculating ball type steering gear, such as image 3 As shown, the recirculating ball steering gear includes a housing and a steering gear input shaft 21, a torsion bar 22, a flow distribution valve 23, a screw 24, a sector gear 25, and a steering gear output shaft 26 installed in the housing. The steering gear input shaft 21. The torsion bar 22 and the screw 24 are fixed coaxially in turn, the flow distribution valve 23 is installed on the torsion bar 22, the screw 24 meshes with the sector gear 25, and the steering gear output shaft 26 is sleeved on the sector gear 25 through the steering gear input shaft 21 sequentially drives the torsion bar 22, the screw 24, the ...

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Abstract

The invention discloses a free clearance detection method of a recirculating-ball steering gear. The method comprises the following steps: controlling and fixing an output shaft of a recirculating-ball steering gear with respect to a shell of the steering gear; driving an input shaft of the steering gear to rotate, and determining whether the deformation angle of a torsion bar reaches the maximum deformation angle; when the deformation angle of the torsion bar reaches the maximum deformation angle, measuring a rotated angle of the input shaft; and calculating the free clearance of the steering gear, the free clearance being the difference between the rotated angle of the input shaft and the maximum deformation angle of the torsion bar. The method is improved in the detection precision of the free clearance of the recirculating-ball steering gear. The invention also discloses a free clearance detection device of the recirculating-ball steering gear.

Description

Technical field [0001] The invention relates to the technical field of steering systems, in particular to a method for detecting a free gap of a recirculating ball steering gear. The invention also relates to a free gap detection device of a recirculating ball type steering gear. Background technique [0002] The transmission gap in the automobile steering system is a comprehensive reflection of component stiffness, manufacturing errors, and theoretical design values. It affects the sensitivity of steering control during driving and involves the safety of automobile driving. The free clearance of the steering gear is an important part of the transmission clearance of the steering system, so it is necessary to detect the free clearance of the steering gear. [0003] The free clearance of the steering gear refers to the angle that the input shaft has rotated when the output shaft of the steering gear just starts to move after the input shaft of the steering gear rotates slowly. Suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/22
Inventor 王定华于建蕾王印李涛李刚
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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