Cumulative hole depth measurement system, measurement method and engineering machinery with the system

Abstract

The invention relates to an accumulated hole depth measuring system and method of an engineering machine. The engineering machine is provided with a machine frame, a working head and an operating control part. The working head is connected with the machine frame through a pull rope and can be controlled by the operating control part to conduct hole-forming operation. The hole depth measuring system comprises a controller, a depth measurer and a pull rope stress sensor. The depth measurer is used for measuring the lowering depth of the working head. The pull rope stress sensor is used for sensing the acting force applied to the pull rope by the working head. The controller is used for recording the first lowering depth of the working head when the acting force sensed by the pull rope stress sensor is changed suddenly (when the working head makes contact with the ground), recording the second lowering depth of the working head when the operating control part sends an end signal, and calculating the one-time effective hole-forming depths and the accumulated hole-forming depth according to the first lowering depth and the second lowering depth. According to the accumulated hole depth measuring system and method and the engineering machine with the system, whether the working head makes contact with the ground or not is recognized through the pull rope stress sensor, the one-time effective hole-forming depths are used as measuring objects, and statistical errors can be eliminated.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a cumulative hole depth measurement system, a measurement method and construction machinery with the system. Background technique [0002] Construction machinery and equipment such as rotary drilling rigs and underground diaphragm wall hydraulic grabs have the characteristics of relying on the periodic feeding and withdrawal of the working head for tunneling and slag discharge. At present, when counting the total amount of actual construction of equipment, the industry only calculates the total amount of hole depth of a batch through the acceptance documents of a single hole depth provided by the engineering project team and takes it as the total amount of construction. However, in the actual excavation operation, the working head needs to start feeding when it is close to the bottom of the hole, and different operators have different judgments on the lowering depth of the w...

AI Technical Summary

Problems solved by technology

[0004] (1) Relying on the records of human measurement to form the total accumulation within a certain period, there are measurement errors;

[0005] (2) It is necessary to arrange personnel and equipment for measurement and statistics after the construction is completed, and additional archiving and storage of statistical data is required, which results in low time efficiency and high economic cost

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