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Low-noise all-hydraulic steering gear

A full hydraulic, steering gear technology, applied in the direction of fluid steering mechanism, etc., can solve problems such as noise, and achieve the effects of improving comfort, reducing hydraulic noise, and reducing jitter

Inactive Publication Date: 2017-04-26
JIANGSU GANGYANG STEERING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the throttling structure of thin-walled small holes is adopted, and the outflow channels are generally set to 2-4, it is easy to generate noise due to high-speed irregular flow of hydraulic oil flowing out of the structure of thin-walled small holes.

Method used

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  • Low-noise all-hydraulic steering gear
  • Low-noise all-hydraulic steering gear
  • Low-noise all-hydraulic steering gear

Examples

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Embodiment Construction

[0020] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0021] Such as Figure 1 to Figure 9 As shown, the low-noise full hydraulic steering gear 1 includes a valve sleeve 2 and a valve core 3, the valve core 3 is movably arranged in the valve sleeve 2, and the valve core 3 includes a cylindrical core barrel 31 The top of the core tube 31 is provided with a connecting sleeve 32, the upper part of the core tube 31 is provided with a through spring hole 33 and a through first pin hole 34, and the middle part of the core tube 31 is provided with a valve The valve core oil return groove array composed of the core oil return groove 37, the bottom of the core barrel 31 is provided with a groove array compos...

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Abstract

The invention discloses a low-noise all-hydraulic steering gear. The low-noise all-hydraulic steering gear comprises a valve sleeve and a valve core. The valve core is movably arranged in the valve sleeve and contains a cylindrical core drum. The circumferential direction of the bottom of the core drum is provided with a groove array composed of grooves. The valve sleeve contains a cylindrical sleeve. The circumferential direction of the lower part of the sleeve is provided with an oil inlet hole array composed of oil inlet holes. Two sides of an outer wall of each groove are provided with de-noising oblique planes. Due to the fact that two sides of the outer wall of each groove are provided with the de-noising oblique planes, the grooves and the oil inlet holes are not instantly closed when the valve core rotates. Through a transitional section, hydraulic noise during steering of the steering gear is effectively reduced. The deflection angle between the opening and closing states of the valve sleeve and the valve core is effectively increased. The jitter during steering, starting and stopping of a car is effectively reduced. The car is operated in a more comfortable and highly practicable way.

Description

technical field [0001] The invention relates to a steering device, more precisely, a low-noise full-hydraulic steering gear. Background technique [0002] Fully hydraulic steering gear is a common steering control device widely used in agricultural machinery and industrial vehicles. Usually, the gap between the rear end hole of the valve sleeve of the current full hydraulic steering gear and the spool groove of the spool overflows the excess steering flow to the inside of the spool, and finally flows from the steering flow through the hole groove provided by the spool valve sleeve. Outflow from the oil return port of the device. Although some designs design the opening direction of the spool groove at the rear end of the spool, the noise generated by the overflow is reduced to a certain extent by changing the direction of hydraulic oil outflow. However, since the throttling structure of thin-walled small holes is adopted, and the outflow channels are generally set to 2-4, ...

Claims

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Application Information

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IPC IPC(8): B62D5/06B62D5/08
Inventor 宋海兵王春宏谭国强
Owner JIANGSU GANGYANG STEERING SYST
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