Device and method for taking up and laying cable conductors synchronously

Abstract

The invention discloses a device and a method for taking up and laying cable conductors synchronously. A driving device and a rotating shaft are fixedly connected; the rotating shaft is fixed on a bracket by a bracket bearing; one end of the a torque limiter is fixed on the rotating shaft, a reel bearing at the other end thereof is sleeved and connected with a reel; the cable conductor is wound on the reel; a signal transferring box is fixed on the bracket and adopts a paired brush structure, and is electrically connected with the cable conductor wound on the reel. The method comprises the steps of: A. loosening a movable plug; B. pulling the cable conductor to a needed length synchronously; C. inserting the movable plug; D. meshing the torque limiter; E. pulling the cable conductor synchronously by an encoder positioning device; F. rotating the reel for taking up the conductor; and G. arranging the cable conductor between the encoder positioning device and the reel. The method is applicable to synchronous taking-up and laying of a plurality of cable conductors in foundation pile integrality detection; and the conductors are respectively put into a plurality of sound testing tubes, and the plurality of pulled cable conductors are synchronously taken up to respective reel in the lifting detection process.

Description

technical field [0001] The invention relates to the field of geotechnical engineering monitoring and detection, and more specifically relates to a device for synchronously retracting and releasing cables, and also relates to a method for the device. It is suitable for detecting the integrity of foundation piles by acoustic transmission method. Background technique [0002] Building foundation piles are the foundation for building bridges and houses. After the foundation piles are laid, their strength, density and integrity need to be tested to see if they meet the corresponding national standards. This is an important factor in evaluating the safety of a project. Acoustic transmission method is a common method for detecting building foundation piles in geotechnical engineering. Different from the dynamic measurement method, the acoustic transmission method does not need to knock on the foundation pile, and will not damage the surface of the foundation pile. It is a non-dest...

AI Technical Summary

Problems solved by technology

When the number of required cables is large (such as the acoustic wave detection control method and device (RSM-SY7 acoustic wave instrument) involved in the invention patent of the above-mentioned patent application number 200710053613.1), these multiple cables are respectively wound into respective windings. A lot of time has been taken up on the wire wheel, which directly affects the efficiency of the entire foundation pile detection work

[0008] Secondly, the cable length is usually very long (more than 50 meters, sometimes more than 100 meters), and the multiple cables that are retracted simultaneously are temporarily piled up, which is easy to twist and twist, which not only makes it difficult to organize messy cables, but also often causes problems. Excessive twisting of the cable leads to damage to the cable and reduces the watertightness of the cable (the specification requires that the watertightness of the cable should meet the requirements of the 1MPa water pressure impermeability index), resulting in a decrease in the performance of the transducer or even scrapping

[0009] Thirdly, the site environment of geotechnical testing engineering is usually poor, and the acoustic testing tube must be filled with clean water when performing acoustic transmission method testing, resulting in the recovered cables being wet, and temporary stacking of these recovered cables on site often makes the cables muddy and dirty

Moreover, the foundation piles to be tested are usually scattered on the site. After one foundation pile is detected, it is very inconvenient for the operator to manually move the acoustic wave detection equipment and a pile of cables to another foundation pile.

[0010] Therefore, when it is necessary to retract and unwind the cables more times (such as the RSM-SY5 type sound wave instrument of the prior art, the RSM-SY6 type sound wave instrument) or the required number of cables is large (as the patent application number 200710053613.1 relates to When using the sound wave detection and control method and device (RSM-SY7 sound wave instrument)), the manual take-up and release device of the prior art is extremely inconvenient

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