Magnetic connection structure, power control device, system, method and construction machinery
A technology of magnetic connection and magnetic device, applied in electromechanical devices, electromechanical transmission devices, electrical components, etc., can solve the problems of high connection coaxiality requirements, inability to adjust matching power, large energy loss, etc., and achieve low coaxiality, The effect of large alignment error and angle error, good energy saving effect
Active Publication Date: 2017-01-04
中联重科土方机械有限公司
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Problems solved by technology
[0003] To sum up, the prior art has the following disadvantages: 1. The connection between the engine and the hydraulic pump requires high coaxiality; 2. The energy loss is large when the actuator is not working; 3. The matching between the hydraulic pump and the engine Lower matching power cannot be adjusted
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[0031] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0032] The present invention provides a magnetic connection structure, which includes a first magnetic device and a second magnetic device. The first magnetic device is connected to the outer rotor of the power output element, the second magnetic device is connected to the inner rotor of the power absorption element, and the second magnetic device is set corresponding to the first magnetic device, wherein the outer rotor of the power output element The action drives the first magnetic device to move, and the first magnetic device moves to drive the second magnetic device to move, thereby driving the inner rotor of the power absorbing element to move, wherein the...
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The invention discloses a magnetic connection structure, a power control device, system and method and an engineering machine. The device comprises a receiving device and a control device, the receiving device is used for receiving the actual rotation speed of an engine, and the control device is used for adjusting the speed ratio of an input shaft of a hydraulic pump and an output shaft of the engine through the magnetic connection structure according to the actual rotation speed of the engine so as to adjust the output power of the hydraulic pump. The engine is a power output component, and the hydraulic pump is a power absorption component. According to the magnetic connection structure, the power control device, system and method and the engineering machine, the speed ratio of the input shaft of the hydraulic pump and the output shaft of the engine is adjusted through the magnetic connection structure according to the actual rotation speed of the engine so that the output power of the hydraulic pump can be adjusted, the requirement for the coaxiality of the engine and the hydraulic pump is low according to the technical scheme, centralization errors and angle errors are allowed to a great extent, the output power of the hydraulic pump can be adjusted when an execution mechanism does not work, and therefore the good energy conversation effect can be achieved.
Description
technical field [0001] The invention relates to power control technology, in particular to a magnetic connection structure, power control equipment, system, method and construction machinery. Background technique [0002] Non-electrically controlled hydraulic pumps are widely used in construction machinery. At present, the engine and hydraulic pump of construction machinery are connected through couplings. This method makes the hydraulic pump and engine require high coaxiality during installation. And the matching power is not adjustable. For this kind of non-electrically controlled hydraulic pump, the current working process is mainly based on constant power control, and the P-Q curve of the non-electrically controlled hydraulic pump can only be adjusted along the same power curve. In addition, the hydraulic pump still runs synchronously with the engine under no-load conditions, so the power loss is relatively large. [0003] To sum up, the prior art has the following dis...
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IPC IPC(8): H02K51/00
Inventor 张磊张明珍东荣张利秦勇
Owner 中联重科土方机械有限公司