Length measuring device and measuring method
A technology of length measurement and measurement method, which is applied in the direction of measurement, earthwork drilling, wellbore/well components, etc., and can solve the problems of complex structure of the installation position of the rotary encoder, frequent failure of the rotary encoder, and high price of the rotary encoder. Achieve the effect of getting rid of low measurement efficiency, high environmental requirements and simple structure
Pending Publication Date: 2017-01-04
CHTC JOVE HEAVY IND
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Problems solved by technology
The first method of manual measurement is not only heavy manual labor but also large measurement error
The second type is to install a rotary encoder on the rotary guide wheel for measurement. The structure of the installation position of the rotary encoder is relatively complicated and has high environmental requirements. However, the construction site environment of drilling rigs is dusty, muddy, and oily, and the construction environment is poor. Cause frequent failures of the rotary encoder, increase the maintenance cost, and the price of the rotary encoder itself is relatively high
Method used
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Embodiment
[0030] Such as Figure 1-3 As shown, a kind of length measuring device provided by the present invention includes a gear plate 5, a mounting plate 6, a proximity switch 7 and a controller (not shown in the figure), and the proximity switch 7 includes a first proximity switch 7.1 and a second proximity switch 7.1. Proximity switch 7.2, the gear disc 5 is installed on the fixed shaft 1, and the left end surface of the gear disc 5 is attached to and connected with the end face of the rope guide disc 3 on the fixed shaft 1; On the right side of the fixed shaft 1, the mounting plate 6 is also installed, and the mounting plate 6 is arranged in parallel with the gear plate 5; the first proximity switch 7.1 is mounted on the mounting plate 6 and the second proximity switch 7.2, the first proximity switch 7.1 and the second proximity switch 7.2 are aligned with the teeth on the gear plate 5, the first proximity switch 7.1 and the second proximity switch 7.2 are all connected to the con...
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The invention discloses a length measuring device. The length measuring device comprises a gear disc, an installing plate, proximity switches and a controller. The proximity switches comprise a first proximity switch and a second proximity switch; the gear disc is installed on a fixing shaft; and the left end face of the gear disc and the end face of a rope guiding disc on the fixing shaft are pasted and connected. The installing plate is located at the right side of the gear disc and further installed on the fixing shaft; and the installing plate and the gear disc are parallelly arranged in a spaced mode. The first proximity switch and the second proximity switch are installed on the installing plate, are aligned to teeth on the gear disc, are connected with the controller, and simultaneously obtain different pulse signals correspondingly. The length measuring device is simple in structure, convenient to install, low in manufacturing cost and high in measuring precision.
Description
technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a length measuring device and a measuring method for measuring the length of a drill pipe of a long spiral multifunctional drilling rig. Background technique [0002] At present, the drilling length calculation of the drilling rigs of engineering machinery includes the following two methods: the first method is manual measurement; the second method is to install a rotary encoder on the rotary guide wheel for measurement. The first method of manual measurement is not only heavy physical labor but also has large measurement errors. The second type is to install a rotary encoder on the rotary guide wheel for measurement. The structure of the installation position of the rotary encoder is relatively complicated and has high environmental requirements. However, the construction site environment of drilling rigs is dusty, muddy, and oily, and the construction ...
Claims
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IPC IPC(8): E21B47/04
CPCE21B47/04
Inventor 徐降芬杨璀珍肖圣
Owner CHTC JOVE HEAVY IND