Hydraulic system for truck crane, truck crane and control method
A technology of truck crane and hydraulic system, applied in the field of hydraulic system, can solve the problems of increased purchase cost, high configuration cost, complexity, etc., and achieve the effect of reducing cost and system complexity
Active Publication Date: 2016-12-07
XUZHOU HEAVY MASCH CO LTD
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Problems solved by technology
However, the current existing hydraulic control system is complex. In order to achieve the optimal power matching of the engine, corresponding control parameters need to be set according to different working conditions, and different power sources should be set for getting on and off the car. The configuration cost is high. Compared with non-energy recovery systems Add a lot of acquisition cost
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[0023] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0024] figure 1 A specific embodiment of the truck crane hydraulic system of the present invention is shown. Such as figure 1 The hydraulic system of the truck crane shown includes: an energy supply device, a closed pump 4, a solenoid valve 10 and an accumulator 12, the energy supply device is connected to the main shaft of the closed pump 4; The getting on and off switching valve 8 of the getting on and off working state of the truck crane, the closed pump 4 communicates with the accumulator 12 through the getting on and off switching valve 8 and the solenoid valve 10; state, the closed pump 4 provides pressure oil for the closed hydraulic system of the vehicle through the switching valve 8; in the first working state of the truck crane, the energy supply device can pass through the closed The pump 4 stores energy ...
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The invention relates to a hydraulic system of an autocrane. The hydraulic system comprises an energy providing device, a closed pump, a solenoid valve and an energy accumulator. The energy providing device is connected with a spindle of a closed pump. The hydraulic system further comprises an ascending and descending switch valve capable of switching the ascending working state and the descending working state of the autocrane, and the closed pump is communicated with the solenoid valve and the energy accumulator through the ascending and descending switch valve. The invention further provides the autocrane and a control method. By means of the method, the systematic complexity can be reduced, the brake energy recovery and utilization in the descending driving state can be achieved, and the cost is reduced.
Description
technical field [0001] The invention relates to the field of construction machinery, in particular to a hydraulic system of a truck crane, a truck crane and a control method. Background technique [0002] For a long time, due to the large number of products, high fuel consumption, and poor emissions in the construction machinery industry, its energy-saving issues have been widely concerned by the industry. As one of the main models of construction machinery, truck cranes, like road motorized equipment, shuttle between different cities and countryside. Due to their heavy weight, they brake frequently, start and stop frequently during driving, and have short-term, repetitive, and periodic cycles. Job characteristics. [0003] At present, the hydraulic hybrid technology is recognized as one of the effective measures to solve the energy crisis and environmental pollution. The hydraulic hybrid utilizes the characteristics that the hydraulic pump / motor can work in four quadrants...
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IPC IPC(8): F15B11/08B66C13/20
CPCB66C13/20F15B11/08F15B2201/00F15B2201/411
Inventor 单增海东权向小强刘东宏张鑫
Owner XUZHOU HEAVY MASCH CO LTD