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Changsha, China

Patent
Hunan Sany Intelligent Control Equipment Co. and Sany Heavy Industry Co. | Date: 2012-04-12

A power gear-shifting transmission and an engineering machinery are disclosed. The power gear-shifting transmission comprises a clutch shaft assembly (


Patent
Hunan Sany Intelligent Control Equipment Co. and Sany Heavy Industry Co. | Date: 2012-04-14

The invention discloses a pump truck stability control system, which comprises a detecting device and a controlling device, wherein the detecting device is used for detecting current pumping state parameters, boom posture parameters, landing leg posture parameters, pump truck body position state parameters and current numerical signals of external load parameters acting on a boom system of a pump truck, and the controlling device is used for receiving the current numerical signals of the above parameters, calculating the complete machine gravity center position of the concrete pump truck according to the parameters, and performing stability control for the pump truck according to the position of the complete machine gravity center in a pump truck stability area. The stability control system comprehensively takes pump truck own factors and external load influence factors into consideration, gravity center computational precision is high, and construction safety of the concrete pump truck is enhanced. In addition, the invention further provides a pump truck stability control method and a pump truck comprising the pump truck stability control system.


Patent
Hunan Sany Intelligent Control Equipment Co. and Sany Heavy Industry Co. | Date: 2014-05-09

In one aspect of the present disclosures, a wheeled material distributing machinery includes a main travel system, a boom system, and a material distributing frame, where an inner end of a root end boom of the boom system is connected to the material distributing frame, the main travel system is mounted on a predetermined boom of the boom system. In a travel state, the main travel system is supported on a road surface, and at least part of the weight of the boom system and at least part of the weight of the material distributing frame act on the main travel system. In a predetermined working state, the material distributing frame is supported on a working surface, and the entire weight of the boom system and the entire weight of the main travel system both act on the material distributing frame.


Patent
Sany Heavy Industry Co. and Hunan Sany Intelligent Control Equipment Co. | Date: 2013-12-26

The disclosure relates generally to the field of boom-type engineering machinery, which discloses particularly an engine speed control method used to control an output speed of an engine of a boom-type engineering machine during a boom action including: detecting a load pressure of a hydraulic system and a moving speed of a boom; determining a target speed of the engine according to the load pressure and the moving speed of the boom, by a central control unit; and sending, by the central control unit, the target speed of the engine to an engine control unit, and performing, by the engine control unit, a speed closed-loop adjustment according to a current speed value fed back by the engine, so that a current speed of the engine is consistent with the target speed of the engine. Further aspects are an engine speed control system and a boom-type engineering machine equipped therewith.


Patent
Sany Heavy Industry Co. and Hunan Sany Intelligent Control Equipment Co. | Date: 2014-03-06

In one aspect of the invention, a boom apparatus includes at least a first boom, a second boom and a third boom sequentially connected to one another, wherein a root end of the first boom is connected to a turntable, some of the booms is a bent boom occupying at least two column spaces, and when the booms are in a folded state, the boom apparatus occupies at least three column spaces. The invention also provides a concrete pump vehicle having the boom apparatus.

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