Pilot device, excavator and use method of pilot device
A pilot and guide hole technology, which is applied to valve devices, soil movers/excavators, fluid pressure actuators, etc., can solve problems such as inability to adjust freely, achieve adjustment sensitivity, improve operation accuracy, and reduce fatigue Effect
Pending Publication Date: 2021-01-15
SANY HEAVY MACHINERY
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Problems solved by technology
The maximum angle that can be pulled by the handle is determined by its own structural size, and cannot be adjusted freely according to the operator's personal needs and operating habits.
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[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without...
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The invention provides a pilot device, an excavator and a use method of the pilot device, relates to the technical field of engineering machinery, and aims to optimize the structure of an operating valve to a certain extent and improve the matching degree with an operation habit of an operator. The pilot device provided by the invention comprises a pilot mechanism and an adjusting mechanism, wherein the pilot mechanism comprises a valve body, a plurality of push rods and a connecting piece; and the adjusting mechanism comprises sliding blocks, an adjusting disc and a control piece. The adjusting disc is arranged on the connecting piece in a sleeving mode, guide holes are formed in the adjusting disc, the first end of each sliding block can penetrate through the corresponding guide hole toabut against the corresponding push rod, the second end of each sliding block can abut against one end of the control piece, and then the first end of each sliding block is arranged in a sliding groove formed in the valve body in a sliding mode; when the adjusting disc rotates with the axis of the connecting piece as a rotating shaft, the sliding blocks can only move in the extending direction ofthe sliding grooves in the direction close to or away from the connecting piece, and therefore the angle of the control piece deviating from the axis of the valve body is changed.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a pilot device, an excavator and a method for using the pilot device. Background technique [0002] Several pilot control valves are used in the excavator to control the boom, stick, bucket, swing and travel of the excavator. In the pilot control valve used in existing excavators, the handle is fixedly connected to the pressure plate, and the operator pulls the handle with his hand, and presses down the push rod through the pressure plate, thereby pushing the spool of the pilot valve to make the oil circuit conduct. . [0003] The angle at which the handle is pulled determines the downward stroke of the push rod, which determines the size of the opening of the pilot valve spool, thus affecting the speed of each action of the excavator. The maximum angle at which the handle can be pulled is determined by its own structural size, and cannot be freely adjusted accord...
Claims
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IPC IPC(8): F16K31/60F15B13/02E02F9/22
CPCE02F9/2267F15B13/02F16K31/602
Inventor 周野崔雨晴
Owner SANY HEAVY MACHINERY