Full-hydraulic steering device having low-speed steering and no idle stroke
An idle stroke, full hydraulic technology, applied in the field of steering equipment, can solve problems such as excessive steering range, idle stroke of steering wheel steering cylinder at low speed, and untimely steering, so as to improve sensitivity, overcome the phenomenon of steering idle stroke, and improve stability. and the effect of accuracy
Inactive Publication Date: 2017-04-19
JIANGSU GANGYANG STEERING SYST
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Problems solved by technology
[0002] Full hydraulic steering gear is a common steering control device for mechanical vehicles. Usually, agricultural machinery and construction machinery using full hydraulic steering gear need to travel at high speed on the road during the transfer of workplaces. The current full hydraulic steering gear cannot Accurately correct the deviation phenomenon of the vehicle during high-speed driving, and it is easy to turn the steering wheel at low speed to turn the steering cylinder empty stroke phenomenon, resulting in untimely steering or excessive steering range, resulting in traffic accidents
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[0018] 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.
[0019] Such as Figure 1 to Figure 8 As shown, the full hydraulic steering gear 1 for low-speed steering without idle travel 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 The core barrel 31, the top of the core barrel 31 is provided with a connecting sleeve 32, the upper part of the core barrel 31 is provided with a through spring hole 33 and a through first pin hole 34, the lower part of the core barrel 31 is circumferentially upward There is a middle oil return groove array composed of the middle oil return groove 35 and an excess flow overfl...
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The invention discloses a full-hydraulic steering device having low-speed steering and no idle stroke. The full-hydraulic steering device having the low-speed steering and no idle stroke comprises a valve bush and a valve core, wherein the valve core can be movably arranged in the valve bush, and comprises a cylindrical core cylinder; a connecting shaft sleeve is arranged at the top of the core cylinder; a penetrating spring hole and a penetrating first pin poking hole are formed in the upper part of the core cylinder; and a median oil returning groove array formed by median oil returning grooves and a superfluous flow overflow groove array formed by superfluous flow overflow grooves are formed in the lower part of the core cylinder in the circumferential direction. According to the full-hydraulic steering device disclosed by the invention, the median oil returning grooves and the superfluous flow overflow grooves are utilized, and quick closing can be realized by a valve core and valve bush secondary oil line system, so that a vehicle is controlled by the full-hydraulic steering device to turn right or turn left; the sensitivity of the steering of the vehicle is effectively improved; and the phenomenon of idle stroke generated in the process of steering of the vehicle when the vehicle travels at a high speed is overcome, and when a steering wheel is rotated at a low speed, the stability and the accuracy of a steering system are effectively improved.
Description
technical field [0001] The invention relates to a steering device, more precisely, a full hydraulic steering gear with low-speed steering and no idle travel. Background technique [0002] Full hydraulic steering gear is a common steering control device for mechanical vehicles. Usually, agricultural machinery and construction machinery using full hydraulic steering gear need to travel at high speed on the road during the transfer of workplaces. The current full hydraulic steering gear cannot Accurately correct the deviation of the vehicle during high-speed driving, and it is easy to turn the steering wheel at a low speed and turn the steering cylinder to empty strokes, resulting in untimely steering or excessive steering range, resulting in traffic accidents. Contents of the invention [0003] The invention mainly solves the technical problems existing in the prior art, thereby providing a full hydraulic steering gear with low-speed steering and no idle travel. [0004] Ab...
Claims
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Inventor 宋海兵王春宏谭国强
Owner JIANGSU GANGYANG STEERING SYST