Single-pedal type foot valve

A foot valve and single pedal technology, applied in the field of control valves, can solve the problems of affecting pilot operating elements, high cost, and high energy consumption, and achieve the effects of improving maneuverability, convenient installation, use and maintenance, and reducing labor intensity.

Inactive Publication Date: 2014-03-26
龙工(上海)精工液压有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing single-pedal pedals for excavators have complex structures, high processing precision and manufacturability requirements for parts, large internal leakage, prone to stick

Method used

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Examples

Experimental program
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Embodiment

[0023] like Figure 1-7 As shown, the present invention provides a single-pedal foot valve that can improve the micro-operation of the excavator, including a pedal 1-1, a connecting plate 1-2, a hinge seat 2-1, a hinge seat 2-3, a push Rod bush assembly 2-5, push rod 2-6, small valve body 1-3, valve body 1-4, spool assembly 2-6. The valve core assembly 2-6 is integrated in the valve body 1-4; the pedal 1-1 is connected with the connecting plate 1-2; the hinged seat 2-4 is connected with the valve body 1-4 and the hinged seat 2-2, and the small valve body 1-3 is connected to the valve body 1-4. The hinged seat 2-4 is connected with the hinged seat 2-2 through the standard parts, and the hinged seat 2-4, the small valve body 1-3 and the valve body 1-4 are connected through the standard parts.

[0024] Pedal foot pad 2-7 selects styrene-butadiene rubber material for use, has wear-resisting, heat-resistant, anti-aging and vulcanization speed, has very long life-span, and cost is...

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Abstract

The invention discloses a single-pedal type foot valve. The single-pedal type foot valve is characterized by comprising a pedal, the pedal is connected with a connecting plate, a hinged support, a hinge base, push rod bushing assemblies and a small valve body in sequence, push rods penetrate through the connecting plate, the hinged support, the hinge base, the push rod bushing assemblies, the small valve body and a piston, and the push rods are connected with a valve plug assembly arranged in a valve body. The single-pedal type foot valve is compact in structure; due to the fact that the design that an O-shaped ring and a Y-shaped sealing ring are used for sealing and guiding is adopted, the frequency of the phenomenon of internal leakage can be reduced, the opening-and-closing characteristic is improved, the single-pedal type foot valve has the advantage that stability of outlet pressure is good, the service life of a pilot system is prolonged, and overall stability of an excavator system is ensured.

Description

technical field [0001] The invention relates to a single-pedal foot valve for an excavator, belonging to the technical field of control valves. Background technique [0002] The single-pedal foot valve is mainly used to control the oil circuit of the pilot control system in the hydraulic system of construction machinery such as excavators. The oil source valve provides the working pressure of the oil circuit of the pilot system, controls the direction of the oil circuit of the walking pilot system, and controls the main valve to realize the travel actuator. The corresponding sub-action or combined action is an important part of the pilot control system, which is mainly used in mobile construction machinery or high-pressure, large-flow hydraulic control machinery. Existing single-pedal pedals for excavators have complex structures, high processing precision and manufacturability requirements for parts, large internal leakage, prone to sticking of the valve core, and large pre...

Claims

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Application Information

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IPC IPC(8): F16K31/62F16K11/14
CPCF16K31/62E02F9/22F16K11/14
Inventor 白永刚王新兵琚永光王康恋郭建东
Owner 龙工(上海)精工液压有限公司
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