Energy recovery hydraulic system and concrete conveying pump
A hydraulic system and energy recovery technology, which is applied to fluid pressure actuation system components, fluid pressure actuation devices, mechanical equipment, etc., can solve problems such as energy waste and energy waste, and achieve the effect of improving work efficiency
Active Publication Date: 2012-10-17
SANY HEAVY IND CO LTD (CN)
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Problems solved by technology
During the buffer braking process of the buffer cylinder, the pressure oil in the buffer chamber is slowly released to the oil tank, resulting in waste of energy, especially in hydraulic systems with frequent reversing, such as concrete pumping systems, the waste of this part of energy more serious
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[0022] The present invention will be further described below in conjunction with the drawings and embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.
[0023] Such as figure 1 with figure 2 As shown, figure 1 It is a schematic diagram of an energy recovery hydraulic system in the present invention, figure 2 It is a structural diagram of an energy recovery hydraulic system proposed in an embodiment of the present invention.
[0024] Reference figure 1 with figure 2 , An energy recovery hydraulic system proposed by the present invention includes: a first pressure oil source 1, at least one buffer cylinder 2, a first control element 3, a first directional valve 4, and an accumulator 5, wherein: the first pressure oil The source 1 provides pressure oil for the buffer cylinder 2. At least one buffer cavity is provided in the buffer cylinder 2. The first control element ...
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The invention provides an energy recovery hydraulic system, comprising a first pressure oil source, at least one buffer oil cylinder, a first control element, a first directional valve and an accumulator, wherein the first pressure oil source supplies pressure oil to the buffer oil cylinder, at least one buffer cavity is arranged in the buffer oil cylinder, the first control element is arranged on an oil way between the first pressure oil source and the buffer oil cylinder and is used for controlling the buffer oil cylinder to change the direction, at least one buffer cavity of the buffer oilcylinder is connected to the accumulator through the first directional valve, and at least a part of pressure oil in the buffer cavity is recovered into the accumulator when the buffer oil cylinder carries out buffering and braking. The invention also provides a concrete conveying pump of the energy recovery hydraulic system. According to the energy recovery hydraulic system, when the buffer oil cylinder carries out buffering and braking, the pressure oil in the buffer cavity can be recovered.
Description
Technical field [0001] The invention relates to the technical field of hydraulic control, in particular to an energy recovery hydraulic system and a concrete delivery pump. Background technique [0002] In the working process of the cylinder, when the cylinder reaches the end of the cylinder stroke for reversing, the high-speed piston will cause a greater impact on the cylinder. In order to reduce the impact of the piston on the cylinder, a buffer cylinder is usually used. When the buffer cylinder is about to reach the end of the stroke, the pressure in the buffer cavity gradually increases to gradually reduce the movement speed of the piston to achieve the purpose of cylinder buffering. During the buffer braking process of the buffer cylinder, the pressure oil in the buffer cavity is slowly released to the oil tank, which causes a waste of energy, especially in a hydraulic system that changes frequently, such as a concrete pumping system. It's more serious. Summary of the inv...
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IPC IPC(8): F15B1/02F15B21/14
Inventor 易小刚刘永东孙丹
Owner SANY HEAVY IND CO LTD (CN)