Valve integrated oil pump device of electric hydraulic jack
A technology of hydraulic jack and integrated valve body, which is applied in the direction of lifting device, rotary piston type/swing piston type pump parts, pump components, etc., which can solve the problems of easy oil leakage and increase of product volume, so as to reduce oil leakage chance, volume reduction, and easy-to-use effects
Active Publication Date: 2014-01-15
XINLEI COMPRESSOR CO LTD
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Problems solved by technology
[0006] The above-mentioned patent involves the oil pump and the control valve. Because the oil pump and the valve are generally designed separately in the existing technology, this design not only increases the volume of the product, but also is a requirement for the automobile jack to be compact and easy to use and carry.
At the same time, oil leakage is prone to occur in places where oil pumps and multiple control valves are set
Method used
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Embodiment Construction
[0025] Such as figure 1 , figure 2 Shown is an electro-hydraulic jack, which includes a hydraulic lifting device 1, an oil pump device 4, an oil tank 6, a motor 5 and a machine base 10, and the hydraulic jacking device 1 is arranged on one side of the machine base 10, and the machine The other side of the seat 10 is provided with a mounting seat 11, the side of the hydraulic jacking device 1 facing the mounting seat 11 is provided with the fuel tank 6, and the other side of the mounting seat 11 is provided with the motor 5; 6 is made of elastic material, and the fuel tank 6 is in a bladder-type "concave" structure. The notch 61 of the fuel tank 6 is stuck on the telescopic arm of the hydraulic jacking device 1, and the opening of the fuel tank 6 is sealed and fixed on the mounting seat 11. The oil pump device 4 is arranged in the oil tank 6, the oil inlet of the oil pump device 4 is opened towards the oil tank 6, and an oil supply channel 15 is provided on the mounting base ...
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The invention relates to a vehicular jack device, in particular to a valve integrated oil pump device of an electric hydraulic jack, which comprises a gear pump. The gear pump comprises a gear, a front cover and a rear cover, the front cover is provided with a control valve cavity, a slider is arranged in the control valve cavity and divides the same into two cavities including the first cavity and the second cavity, the first cavity is provided with a first oil channel which is communicated with an oil feed inlet of the gear pump, a third cavity is arranged at the outer end of the first cavity, the first cavity is connected with the third cavity, a first oil feed inlet is provided with an oil outlet one-way valve, the slider is provided with a jacking rod arranged in the first cavity, the third cavity is provided with an oil outlet, the second cavity is provided with a second oil channel, the second oil channel is communicated with an oil discharge outlet of the gear pump, an oil return hole is arranged on the side wall of the control valve cavity, and the rear cover is fixedly provided with an oil inlet one-way valve. A control valve is integrated in the oil pump, so that the size of the oil pump device is reduced greatly and oil leakage probability is decreased effectively.
Description
technical field [0001] The invention relates to a jack device for a vehicle, in particular to an oil pump device of an electrohydraulic jack. Background technique [0002] Car jacks generally adopt a hydraulic structure, and the jacking device of the jack is raised by manually controlling the hydraulic oil. This kind of jack generally has a bulky structure, is not easy to carry around, and is laborious to operate. Existing has occurred the electrohydraulic jack that adopts vehicle power socket to draw power supply. [0003] For example, the Chinese utility model patent (application number: 200620107377.8, application date: 2006-09-04) discloses an electric hydraulic jack for vehicles, which includes an oil source box and a motor connected to the oil source box, and an oil pump driven by the motor. and an oil cylinder with a piston rod, a one-way controllable valve is arranged between the oil pump and the oil cylinder, and a valve cavity is arranged on the one-way controllab...
Claims
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IPC IPC(8): B66F3/42B66F3/44F04C15/00
Inventor 钟仁志李中权林晓健
Owner XINLEI COMPRESSOR CO LTD