Abstract: A revolution vibration suppressing method and apparatus for pump truck boom is provided. Vibration severity of the boom in the revolution direction is detected. Dynamic characteristic parameters of the boom are extracted. A control signal that can be used to control the revolving actuator to compensate the vibration severity according to the vibration severity and the dynamic characteristic parameters is calculated. The revolving actuator is driven according to the control signal to move, to suppress the revolution vibration of the boom. A revolution vibration suppression controller and a revolution vibration suppression device for a pump truck boom are provided to implement the methods. With the disclosed methods and apparatus, the vibration of a pump truck boom in the revolution direction can be suppressed, and therefore the risk of failures of the boom is decreased and the operating safety in the work is improved.

Abstract: 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.

Abstract: The present invention discloses a carbon fiber composite material boom, a production method thereof, and a truck-mounted concrete pump comprising the carbon fiber composite material boom. The production method of the carbon fiber composite material boom comprises: a flexible airbag is inflated to form an airbag in a first state and a carbon fiber prepreg is laid on the outer surface of the airbag in the first state to obtain a first transitional component; the first transitional component is put into a box-shaped mold and the airbag in the first state is inflated; the carbon fiber prepreg is compressed and shaped to obtain a second transitional component; the second transitional component is heated up and solidified, and cooled and de-molded after being solidified to obtain the carbon fiber boom.

Abstract: 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.

Abstract: 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.

Abstract: The present invention discloses a revolution vibration suppressing method for pump truck boom, comprising: detecting the vibration severity of the boom in the revolution direction; extracting dynamic characteristic parameters of the boom; calculating a control signal that can be used to control the revolving actuator to compensate the vibration severity according to the vibration severity and the dynamic characteristic parameters extracted; and driving the revolving actuator according to the control signal to move, to suppress the revolution vibration of the boom. In addition, the present invention further provides a revolution vibration suppression controller and a revolution vibration suppression device for a pump truck boom, and a pump truck comprising the device. With the technical scheme described above, the vibration of a pump truck boom in the revolution direction can be suppressed, and therefore the risk of failures of the boom is decreased and the operating safety in the work is improved.

Abstract: The disclosure provides a concrete pumping equipment and a bending connecting rod device thereof, and a manufacturing method for the device. The bending connecting rod device comprises a shaft sleeve, at least two composite support plates and cover plates, wherein the at least two composite support plates are provided with holes, the shaft sleeve is embedded in the holes, and the at least two composite support plates are arranged on the shaft sleeve at intervals; and the cover plates are fixedly arranged at the ends of the shaft sleeve. Through the disclosure, the bending connecting rod is formed by thermally pressing and solidifying the composite support plates and the shaft sleeve embedded in the composite support plates, so as to have the characteristics of light weight, and high strength, corrosion resistance and designability.

Abstract: 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.