Tunnel cushioning rolling wheel and pneumatic hammer instrument for tunnel void detection comprising same
A rolling wheel and pneumatic technology, which is applied in the field of tunnel construction quality inspection, can solve problems such as data collection deviation, interference with the operation of wave collection equipment, and impact on measurement accuracy, so as to increase detection accuracy, save labor costs, and improve sound waves. The effect of acquisition accuracy
Pending Publication Date: 2018-02-13
NORTHWEST RES INST CO LTD OF C R E C
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Problems solved by technology
[0003] At present, CN201510364939.0, a tunnel void detection head, a tunnel void detector and a method for detecting tunnel void have been disclosed. However, the hammering parts of the existing automatic hammering instruments are mostly driven by electromagnetic means. The device is directly installed on the automatic hammering instrument. When the electromagnetic drive equipment is running, current noise and electromagnetic waves will interfere with the operation of the wave collection equipment, resulting in deviation of collected data and affecting measurement accuracy.
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[0021] A tunnel cushioning scroll wheel, the hub 112 of the scroll wheel 110 is provided with a buffer layer 113 . The buffer layer 113 is made of rubber.
[0022] Pneumatic tunnel void detection hammering instrument, including hammering mechanism, above-mentioned rolling wheel and sound wave receiving mechanism 111, said hammering mechanism includes hammer barrel 101, hammer head 102, hammer seat 103 and air source connection port 104, hammer barrel 101 is provided with a pneumatic cavity 105 and an air source connection port 104, the pneumatic cavity 105 communicates with the air source, and the air pressure of the air source drives the hammer head 102 in the pneumatic cavity 105 to move. The hammer head 102 is divided into a moving piston 108 and a hammering block 109 , and the moving piston 108 drives the hammering block 109 to move in the pneumatic cavity 105 . The hammer barrel 101 is provided with an upper limit ring 106, a lower limit ring 107 and a return spring 114,...
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The invention relates to the technical field of tunnel construction quality detection, in particular to a tunnel cushioning rolling wheel and a pneumatic hammer instrument for tunnel void detection comprising the same. The pneumatic hammer instrument for tunnel void detection comprises a hammer mechanism, a rolling wheel and an acoustic receiving mechanism; the hammer mechanism comprises a hammerbarrel, a hammerhead, a hammer base and a gas source connection; the hammer barrel is provided with a pneumatic chamber and the gas source connection, the pneumatic chamber is communicated with a gassource, and pressure of the gas source drives the hammerhead in the pneumatic chamber to move. The rolling wheel of the pneumatic hammer instrument for tunnel void detection is not provided with a driving device, electromagnetic and noise interferences are lessened, acoustic receiving vividness is improved, and detection precision is improved. Pneumatic driving can be achieved by connecting the gas source connection with a remote gas source.
Description
technical field [0001] The invention relates to the technical field of tunnel construction quality detection, in particular to a tunnel damping rolling wheel and a pneumatic tunnel void detection hammering instrument thereof. Background technique [0002] In the initial stage of tunnel acoustic vibration detection, it was limited to artificial hammers hitting the concrete surface of the second lining, and artificially judged the void situation through echoes. The judgment results vary from person to person, which belongs to the category of empirical methods, with low reliability and accuracy, and no data support. , unable to form effective data and graphic data reports on the test results. In response to the above problems, an automatic hammering instrument for tunnel void detection has been developed. The instrument automatically hammers the concrete surface of the second lining of the tunnel, causing the concrete to vibrate and generate waves, thereby collecting waves to c...
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IPC IPC(8): G01N29/22G01N29/04
CPCG01N29/045G01N29/22
Inventor 窦顺夏琼陈英福郑静李永才杜嘉轩张仲斌
Owner NORTHWEST RES INST CO LTD OF C R E C