Hydraulic control system and engineering machinery with the hydraulic control system
A technology of hydraulic control system and working oil port, which is applied in the direction of mechanical equipment, clockwork mechanism, infrastructure engineering, etc., can solve the problems of slow lifting speed, achieve the effect of increasing lifting speed and improving operating efficiency
Active Publication Date: 2017-10-10
河北雷萨重型工程机械有限责任公司
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Problems solved by technology
[0003] In the hydraulic control system of the main winch of the dynamic compaction machine in the prior art, the main winch is mainly driven by variable variable double pumps, but when the variable variable double pumps drive the main winch to lift, the lifting speed will be relatively slow
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[0020] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0021] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, it indicates There are features, steps, operations, means, components and / or combinations thereof.
[0022] Such as figure 1 As shown, the hydraulic control system of the preferred embodiment of the present invention mainly includes a variable variable doubl...
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The invention provides a hydraulic control system and engineering machinery having the hydraulic control system. The hydraulic control system comprises a first main oil pump, a windlass motor and balance valve set, a first multi-way valve and an oil supplementing pump, wherein the windlass motor and balance valve set comprises a first oil port and a second oil port; the first multi-way valve comprises an oil inlet, a first working oil port and a second working oil port; an oil outlet of the first main oil pump is communicated with the oil inlet of the first multi-way valve; the first working oil port of the first multi-way valve is communicated with the first oil port; the second working oil port of the first multi-way valve is communicated with the second oil port; and an oil outlet of the oil supplementing pump and the oil inlet of the first multi-way valve are selectively communicated or separated through a first oil way. The hydraulic control system can accelerate the lifting speed of a main windlass driven by a windlass motor. When the hydraulic control system is applied to such engineering machinery as a dynamic compactor, as a main windlass is driven through the hydraulic control system realizing multi-pump converging, the lifting speed of the main windlass is accelerated, and the operation efficiency is improved.
Description
technical field [0001] The present invention relates to the field of construction machinery, and more specifically, to a hydraulic control system and construction machinery with the hydraulic control system. Background technique [0002] When the dynamic tamping machine is performing tamping operations, the main winch is required to lift the rammer. After the rammer is raised to a certain height, the rammer falls off the hook to compact the foundation. From the working process of dynamic compaction, the lifting speed of the rammer determines the working efficiency, the faster the speed, the higher the efficiency. [0003] In the hydraulic control system of the main winch of the dynamic compaction machine in the prior art, the main winch is mainly driven by variable variable double pumps, but when the variable variable double pumps drive the main winch to lift, the lifting speed will be relatively slow. Contents of the invention [0004] The object of the present invention...
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IPC IPC(8): B66D1/08E02D3/046
CPCB66D1/08E02D3/046F15B11/04
Inventor 洪建求李萌
Owner 河北雷萨重型工程机械有限责任公司