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Method for detecting output torque of full hydraulic transmission type drill

A technology of output torque and detection method, applied in the direction of measuring device, torque measurement, instrument, etc., can solve the problems of no vibration of the transmission shaft, complex measuring device, huge mechanism, etc., achieve simple and convenient implementation, improve detection efficiency, and detect device simple effect

Inactive Publication Date: 2009-09-16
JILIN UNIV
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AI Technical Summary

Problems solved by technology

The usual practice is to place the torque meter on the transmission shaft in a certain way, but the transmission shaft must be disconnected, and this method cannot be realized under the power head, because doing so will prevent the working medium from passing through the output shaft, and at the same time If the power head vibrates, the torque meter will not work
None of the current torque meters can be used
These methods have the following disadvantages: 1. The signal changing device is a high-precision instrument, which requires no vibration of the transmission shaft
2. The measuring device is complex and the mechanism is huge
3. It is mostly suitable for indoor testing, but it is difficult to apply to field testing
At present, there is no report on the output torque detection method of the fully hydraulic transmission drilling rig at home and abroad.

Method used

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  • Method for detecting output torque of full hydraulic transmission type drill

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment for further detailed description:

[0026] By detecting the pressure difference between the inlet and outlet of the hydraulic motor, the output torque of the hydraulic motor is determined, and then the output torque of the drilling rig is calculated.

[0027] Install the pressure sensors 1 and 3 on the hydraulic motor inlet and outlet pipelines 2 and 4 respectively through the tee to detect the pressure of the hydraulic motor inlet and outlet pipelines 2 and 4. The pressure sensors 1 and 3 are connected to the computer through the analog-to-digital conversion module. Connected, when the high-pressure hydraulic oil passes through the inlet 2 and outlet 4 of the hydraulic motor, the pressure signals detected by the pressure sensors 1 and 3 are sent to the computer through the analog-to-digital conversion module for recording and storage, and the pressure difference Δp at the outlet of the hydraulic motor is calc...

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Abstract

The invention discloses a method for detecting output torque of a drilling tool and in particular relates to a method for detecting the output torque of a full hydraulic transmission type drill. An inlet and an outlet of a hydraulic motor are equipped with pressure sensors which confirm the output torque of the hydraulic motor by detecting the pressure difference at an oil inlet and an oil outlet of the hydraulic motor and then calculate the output torque of the drill. The invention does not require assembling a torque meter after disconnecting a transmission shaft and avoids that the torque meter can not work due to the vibration of a power head and the transmission shaft. A detection device is simple. The output torque of the drill can be obtained by detecting the pressure difference at the oil inlet and the oil outlet of the hydraulic motor and simple calculation. The method is simple, convenient and easy for realizing, is applicable to field test, has low cost and convenient operation and improves the detection efficiency greatly.

Description

Technical field: [0001] The invention discloses a method for detecting the output torque of a drilling machine, in particular to a method for detecting the output torque of a full hydraulic transmission type drilling machine. Background technique: [0002] Reasonable drilling parameters play a vital role in the drilling efficiency of the drilling rig, the structural size and power configuration of the drilling rig, and the output torque of the drilling rig is a very important parameter. At present, the detection methods of the output torque of drilling rigs are all aimed at mechanical transmission drilling rigs. The torque detection of the mechanical transmission type drilling rig is mainly to detect the maximum torque borne by the orifice casing when it rotates, that is, the output torque of the drilling rig. The usual practice is to place the torque meter on the transmission shaft in a certain way, but the transmission shaft must be disconnected, and this method cannot be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/00
Inventor 赵大军李守圣孙友宏于萍郑俊华赵研
Owner JILIN UNIV
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