A capacitive grid sensor torque wrench
A technology of torque wrench and sensor, applied in the field of torque wrench, can solve the problems of unguaranteed accuracy, easy change of tightening torque, permanent deformation of preload spring, etc., so as to reduce labor intensity, improve construction efficiency and improve accuracy. Effect
Active Publication Date: 2021-08-31
CHINA THREE GORGES UNIV
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Problems solved by technology
[0006] The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art, and to provide an intelligent torque wrench, which can detect the torque of the wrench well through a capacitive sensor on the one hand, and can solve the problem of existing torque well on the other hand. During the use of the wrench, the pre-tightening spring is prone to permanent deformation, the tightening torque is prone to change, and the technical problem that the accuracy cannot be guaranteed
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Embodiment
[0047] A capacitive sensor torque wrench, including torque wrench head 1, ratchet 2, reversing valve 3, ball 4, spring 5, torque wrench head cover 6, screws 7, reversing handle 8, capacitive sensor receiving Pole 9, cylindrical pin, cylindrical pin fixing ring 11, sending electrode assembly 12, dowel rod 14, ejector rod 15, positioning nut 16, spring 17, spring spacer, cylindrical sleeve 20, adjusting rod 21, nut 22, inner Sleeve 23, torque wrench body outer sleeve 24, adjustment handle 25, nut 26, electronic unit 27. The ratchet 2 is engaged with the reversing valve 3 through gears, and is installed on the head of the torque wrench body; the spring 5 is in a compressed state, and cooperates with the ball 4 to limit the movement of the reversing valve 3; the thread of the screw 7 is connected with the head cover 6 of the torque wrench and the torque wrench The threaded hole in the head cooperates to fix the ratchet 2 and the reversing valve 3; the reversing handle 8 forms a ri...
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A capacitive sensor torque wrench, which includes a torque wrench head, the torque wrench head is connected to one end of a dowel bar at the connection part through a rotating shaft structure, the other end of the dowel bar is a flat end, and the ejector rod passes through the convex end of the front end. The starting part is contact-connected with the flat end of the dowel rod, the rear end of the ejector rod is connected with one end of the spring, and the other end of the spring is connected with the fixing mechanism. The fixing mechanism is used to fix the end of the spring at a specific position. The connecting part of the wrench head is provided with a capacitance sensor; after the front end of the dowel rod is connected to the connection part of the torque wrench head through the rotating shaft structure, the extension end of the front end of the dowel rod is set in the sensing part of the capacitance sensor . The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art, and provide an intelligent torque wrench, which has the characteristics of high precision, large range, accurate control of torque value and real-time display, and can meet the needs of automatic production.
Description
technical field [0001] The invention belongs to the field of mechanical equipment, and in particular relates to a torque wrench. Background technique [0002] A torque wrench is a special tool that can provide real-time feedback on the tightening torque, and can apply a more accurate tightening torque. In some engineering situations, the torque wrench plays a vital role. [0003] The requirements for the assembly of transmission towers are that a torque wrench should be used during the initial installation, and the connecting bolts should be tightened one by one. The torque wrench used for bolt connection must reach the torque value to introduce the "pre-tightening force" into the fastener. Control the reliability of bolt tightening by observing the bolt torque value. When the torque applied to the connecting bolt exceeds a certain torque level, the connecting bolt is stretched axially. This axial tension results in a preload in the bolts and nuts that hold the transmissio...
Claims
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IPC IPC(8): B25B23/142B25B13/46
CPCB25B23/1427B25B13/46
Inventor 赵美云殷云辉何钱李伟田森
Owner CHINA THREE GORGES UNIV