Zoomlion Heavy Industry Science and Technology Co., Ltd

Hunan Zoomlion Special Vehicle Co., Ltd.

Liang Wan

Jiaqian Wang

Shuai Wang

Peilin Li

Xinyu Fu

Ze Chen

Liang Wu

Shiyang Hua

Qianxing Luo

Jun Yin

The invention relates to the technical field of pump truck control, and discloses a pump truck boom control method, a pump truck boom control system and a pump truck. The pump truck boom control method comprises: detecting a working condition of a boom, wherein the boom is divided into first-type arms close to the first arm and second-type arms close to the last arm in advance; and controlling each arm in the first-type arms to act at respective preset movement speed when the boom is in an opening placing boom working condition before the construction or in a folding placing boom working condition after the construction. The method can realize speed-up control on movement speeds of the each arm in the first-type arms under the opening placing boom working condition before the construction or under the folding placing boom working condition after the construction without a boom posture detection sensors.

Pump truck boom control method, pump truck boom control system and pump truck

A boom vibration suppression method for concrete distributing apparatus is disclosed. The boom comprises a boom oil cylinder for respectively driving each section of the boom; the vibration suppression method comprises: detecting the variation of output force of the boom oil cylinder, and maintaining the variation of output force within the range of a preset threshold. The present invention further provides a vibration suppression controller, a vibration suppression device, and a concrete distributing apparatus that implement the method described above. The vibration of the boom is controlled directly with little time delay. The pressure of the boom oil cylinder is controlled directly and the variation of output force is maintained within a specific range; that control process is applicable to any boom posture since it has no direct relationship with the posture and dynamic characteristics of the boom.

Concrete distributing apparatus, and vibration suppression method, controller and device for the boom thereof

Disclosed are a concrete distributing device and a control method, a control system and an electrical control system for composite motion of a boom thereof. The control method comprises the steps as follows: calculating the flow of a boom pump when an operating handle sends a command; according to the command sent by the operating handle, calculating theoretical demand flow of all actuating mechanisms of the boom and theoretical control signals of all electronic proportional control valves; comparing the total theoretical demand flow of the actuating mechanisms with the flow of the boom pump; providing the theoretical control signals to all the electronic proportional control valves when the flow of the boom pump is greater than or equal to the total theoretical demand flow of the actuating mechanisms, otherwise, providing actual control signals smaller than the theoretical control signals to all the electronic proportional control valves and reducing the movement speeds of all the actuating mechanisms proportionally. In this way, when undersaturation of system occurs to the composite motion of the boom, the movement speeds of all the actuating mechanisms are reduced proportionally independent of the load difference of the actuating mechanisms, thereby ensuring that the boom can move in a motion track expected by an operator.

Concrete distributing device and control method, control system and electrical control system for composite motion of boom thereof

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Changsha, China

Liang Wan