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Seat disc hydraulic system with pressure feedback type adjustable throttle valve

A hydraulic system and adjustable technology, which is applied in the direction of fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc., can solve the problem of low operating efficiency of the seat plate with a fixed orifice, and achieve flexible and efficient hydraulic system of the seat plate. Improve the efficiency of equipment use and increase the speed

Active Publication Date: 2020-11-17
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a seat plate hydraulic system with a pressure feedback adjustable throttle valve to solve the problem of low operating efficiency of the fixed orifice seat plate

Method used

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  • Seat disc hydraulic system with pressure feedback type adjustable throttle valve

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Embodiment Construction

[0016] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0017] combine figure 1 , a seat plate hydraulic system with a pressure feedback adjustable flow valve of the present invention, including a fuel tank 1, an oil pump 2, an oil return filter 3, an oil return air cooler 4, an oil filter 5, a pilot overflow Flow valve 6, system pressure reducing valve 7, proportional reversing valve 8, electromagnetic ball valve 9, seat plate oil cylinder 10, adjustable flow valve 11, pressure gauge 12, seat plate accumulator 13;

[0018] One end of the gear pump 2 is connected to the oil tank 1, and the other end is connected to the high-pressure oil filter 5, oil is extracted from the oil tank 1 and transmitted to the high-pressure oil filter 5, and the oil outlet of the high-pressure oil filter 5 is connected to the pilot overflow The oil inlet of valve 6 is connected, the oil outlet of pilot relief valve 6 i...

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Abstract

The invention discloses a seat disc hydraulic system with a pressure feedback type adjustable throttle valve. The system comprises a two-position two-way proportional reversing valve, an electromagnetic ball valve, a seat disc oil cylinder, the adjustable throttle valve and a seat disc energy accumulator. When a self-adaptive seat disc works, the pressure of the seat disc energy accumulator is fedback to the adjustable throttle valve through an oil way, the opening degree of the throttle valve is dynamically adjusted according to the pressure of the seat disc energy accumulator, and thereforerapid lifting control over the seat disc oil cylinder is achieved. The defect that the lifting time of a fixed throttling opening seat disc is long is overcome, and the working efficiency of equipment can be remarkably improved.

Description

technical field [0001] The invention belongs to the field of fluid transmission and control, in particular to a seat plate hydraulic system with a pressure feedback adjustable throttle valve. Background technique [0002] The hydraulically driven seat plate system is widely used in large-scale construction machinery with a large load-carrying capacity. Its working principle is to provide stable and effective support for the working platform by resisting the impact load through hydraulic resistance. At present, the commonly used seat plate hydraulic system often adopts a fixed orifice, which cannot adaptively adjust the opening of the orifice according to the pressure. In addition, the orifice is generally designed according to the hydraulic resistance requirements when the seat plate is fully lowered, so the size of the orifice is small and the design is relatively conservative, resulting in low efficiency of the seat plate stowed and put down, especially during the stowed a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B9/08F15B1/02F15B21/041
CPCF15B9/08F15B1/02F15B21/041
Inventor 钱林方徐亚栋邹权陈龙淼尹强王满意陈光宋陈红彬羊柳孙乐干金杰
Owner NANJING UNIV OF SCI & TECH
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