Abstract:
A bolt tension gauging apparatus is provided with a bolt assembly including a bolt having a top cavity on a head and a recess on a surface of a threaded shank, and a covering element fitted onto the recess; an electrical resonant transformer on a bottom of the covering member; and a force transducer and transmitter assembly in the recess and electrically connected to the transformer. An electrical resonant transformation device causes the transformer to harvest power from radio frequency electromagnetic waves if a distance between the transformation device and the transformer is sufficiently short. The force transducer and transmitter assembly gauges tension of the bolt and converts same into a signal. The signal is transmitted to a controller and display device for calculating a difference between a predetermined tension and the gauged tension. An alert is generated if the gauged tension is greater than the predetermined tension.
Abstract:
A bolt tension gauging device is provided. The bolt tension gauging device includes a sensing bolt, a head and a displayer. The sensing bolt is for transmitting a stress signal. The head is for fitting with the sensing bolt. The displayer is connected to the head for displaying the stress signal.
Abstract:
A double ratchet structure includes a base, a first directional member, a second directional member, two resetting members, a choosing member, a driving member and a pivoting member. The first and second directional members are pivotally disposed on the base, the first directional member pivots oppositely to the second directional member. The resetting members are respectively disposed between the first or the second directional member and the base for protruding the first or the second directional member from the base. The choosing member is coaxially and pivotally disposed on the base and covers the first and the second directional members. The choosing member catches the first or the second to pivot toward the base. The driving member is coaxially and pivotally disposed on the base through the pivoting member for engaging with the first or the second directional member.
Abstract:
An electronic torque tool includes a main body; at least one display unit disposed on the main body for displaying torque values, and several pushbuttons disposed on the main body for a user to set values to the torque tool. The electronic torque tool has resettable torque warning values, which are discontinuous values with an interval therebetween. Thanks to the interval between the discontinuous resettable torque warning values, the torque warning value of the torque tool is lower than the required tightening force. In this case, it can be avoided that a threaded member is over-tightened.
Abstract:
A torque wrench includes a hollow body, a clutch mechanism, a force-applying member, and at least one driving arm. The clutch mechanism is mounted in the hollow body. The force-applying member is pivotally mounted in the hollow body and has a first end against the clutch mechanism. The force-applying member also has a second end for the driving arm coaxially mounted onto. Thus, the torque wrench can take the overall length of the force-applying member and the driving arm as a first moment arm, and the torque wrench is easy to storage due to the detachable driving arm. In addition, the torque wrench can be increased in length by mounting a driving arm which is a plurality of rods detachably assembled with each other.
Abstract:
A torque wrench includes a hollow body, a clutch mechanism, a force-applying member, and at least one driving arm. The clutch mechanism is mounted in the hollow body. The force-applying member is pivotally mounted in the hollow body and has a first end against the clutch mechanism. The force-applying member also has a second end for the driving arm coaxially mounted at. Thus, the torque wrench can take the overall length of the force-applying member and the driving arm as a first moment arm, and the torque wrench is easy to storage due to the detachable driving arm. In addition, the torque wrench can be increased in length by mounting a driving arm which is a plurality of rods detachably assembled with each other. A method of operating the torque wrench includes mounting the clutch mechanism and the force-applying member in the hollow body, and mounting the driving arm at the second end of the force-applying member. The torque wrench can be increased in length by mounting a plurality of the driving arms.
Abstract:
A wrench includes a handle, a first driver, and a second driver. The first driver and the second driver are integrally connected to two ends of the handle respectively. An angle between a driving axis of the first driver and a central axis of the handle is α, an angle between one opening end of the first driver and the handle is φ, an angle between a driving axis of the second driver and the central axis of the handle is β, and an angle between one opening end of the second driver and the handle is θ. The angle α and the angle β are located at two sides of the central axis of the handle respectively. The other opening end of the first driver and the other opening end of the second driver are horizontally connected to the handle respectively.