Hydraulic brake valve of full-hydraulic brake system in construction machinery
A technology for hydraulic brake valves and engineering machinery, which is applied in the field of hydraulic brake valves, and can solve problems such as the failure of reliability and stability of hydraulic sealing performance, difficulty in manufacturing and processing, and high precision of matching dimensions, so as to improve braking performance. Sealing performance and service life, stable and reliable working condition, and good safety performance
Active Publication Date: 2013-06-12
WUHU SHENGLI TECH SHARES
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Problems solved by technology
[0002] In the prior art, the performance of hydraulic brake valves (such as the hydraulic brake valve model SL01) used on engineering machinery vehicles cannot meet the requirements of hydraulic brakes for engineering machinery, and the reliability and stability of hydraulic sealing performance are poor. not meet the requirements
The upper and lower valve inner holes of the hydraulic brake valve and the shaft core have high dimensional accuracy (rigid seal), which is difficult to manufacture and process. The dynamic sealing performance of Guanjian’s core components has leakage, which cannot meet the product’s hydraulic brake seal test requirements. , resulting in hydraulic brake system brake failure
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[0020] Referring to the accompanying drawings, through the description of the embodiments, the specific implementation of the present invention, such as the shape, structure, mutual position and connection relationship between the various parts, the function and working principle of each part, and the manufacturing process And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.
[0021] Such as figure 1 , figure 2 and image 3 The structure of the present invention expressed, the present invention is a hydraulic brake valve of the full hydraulic brake system of construction machinery, which is controlled by the brake pedal 8, and the hydraulic brake valve and the brake pedal 8 are both installed on the bracket 3 superior. The hydraulic brake valve (SL01) of the full hydraulic brake system of ...
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The invention discloses a hydraulic brake valve of a full-hydraulic brake system in construction machinery, controlled by a brake pedal (8). The hydraulic brake valve and the brake pedal (8) are mounted on a bracket (3), the full-hydraulic brake system is provided with two hydraulic control oil paths which are respectively communicated with brake wheel cylinders of a front axle and a rear axle ofa construction machinery vehicle, either hydraulic control oil path is provided with a three-position three-way change valve, and value cores of the two three-position three-way change valves are connected in series. The hydraulic brake valve is of a full-hydraulic brake system structure, has the technical parameters and performance indexes satisfying the design requirements of the hydraulic system, stable and reliable working state and good safe performance, improves the reliability of product sealing performance and improves the design and the performance of key core parts aiming at the internal structure of a traditional product so as to improve the sealing performance and the service life of the product.
Description
technical field [0001] The invention belongs to the technical field of engineering machinery, and relates to a full hydraulic brake system for the operation of engineering machinery vehicles. More specifically, the invention relates to a hydraulic brake valve of the full hydraulic brake system of the engineering machinery. Background technique [0002] In the prior art, the performance of hydraulic brake valves (such as the hydraulic brake valve model SL01) used on engineering machinery vehicles cannot meet the requirements of hydraulic brakes for engineering machinery, and the reliability and stability of hydraulic sealing performance are poor. Not meeting the requirements. The upper and lower valve inner holes of the hydraulic brake valve and the shaft core have high dimensional accuracy (rigid seal), which is difficult to manufacture and process. The dynamic sealing performance of Guanjian’s core components has leakage, which cannot meet the product’s hydraulic brake seal...
Claims
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IPC IPC(8): B60T15/18
Inventor 乔跃平汤淮王华叶新年王永胜
Owner WUHU SHENGLI TECH SHARES