Method and device for tightening a threaded connection, preferably for connecting pipeline components, wherein the threaded connection to be tightened comprises a connecting element unit having an external thread, a connecting element unit having an internal thread, and a seal element arranged therebetween.

A communication port interface facilitates downloading of torque and/or angle log information from an electronic torque tool to an external device. Torque and/or angle preset job information may be entered in client software and uploaded from the external device to the electronic torque tool via the communication port interface. Additional information including real time clock information and wrench system parameters may be uploaded to the electronic torque tool via the communication port interface.

A tightening tool is configured to allow a worker to perceive that a tightening torque generated by tightening a tightened member by the worker reaches a preset torque value. The tightening tool includes a torque value setting unit configured to be able to set the preset torque value to a predetermined value by rotating a rotating member, and a rotation angle detector configured to detect a rotation angle of the rotating member, and output rotation angle information based on the detected rotation angle.

The invention relates to a screw device for applying torque to a screw partner (12), comprising flat output assembly (10) provided with an output member that can be detachably connected to the screw partner and a drive to which a drive torque can be manually or mechanically applied, particularly by an interconnected angular and/or bevel gear (16), and an assembly (48) for detecting an output torque acting on the screw partner on the output side, the detection assembly associated with the flat output assembly and particularly provided on and/or in a housing (30 32) of the flat output assembly being designed such that it can detect an axial force acting on a helical gear (38) connecting the drive and the output member of the flat output assembly in a torque-transmitting manner and provide same for preferably electronic signal evaluation.

A connection structure is connected between a wrench head of a torque wrench and a socket, and the connection structure contains: a body, a casing, and two positioning members. The body includes a coupling section, a driving section, an extension defined between the coupling section and the driving section, and two bolts oppositely inserted into the body from an outer wall of the coupling section. The casing includes a first part, a second part, and two accommodation grooves respectively defined on two inner walls of the first part and the second part and located adjacent to the coupling section. Each of the two positioning members is housed in each of the two accommodation grooves, wherein each positioning member includes multiple toothed projections arranged on an inner wall thereof and abutting against each of the two bolts.

A torque wrench for applying a torque to a fastener includes a handle, a user interface carried by the handle, and a fastener drive. The fastener drive can be detachably engaged with the handle and also include a head shaped to receive a fastener. The user interface can indicate an applied torque on the fastener.

A tightening device includes: a sensor for detecting an elongation of a bolt; a socket for rotating the bolt; and a biasing member for biasing the sensor against a head of the bolt. The sensor and the socket are provided separately and independently of each other.

There is provided a tightening operation analysis apparatus configured to analyze a tightening operation performed by a worker using a tightening tool. The tightening tool includes a head configured to be able to engage with a tightened member, and a main body configured to pivotally engage with the head and turn when a tightening torque for tightening the tightened member reaches a preset torque value. The tightening operation analysis apparatus includes a motion information acquisition unit configured to acquire motion information indicating a turning motion of the main body, from the tightening tool, and an analysis unit configured to output a result of analysis of a load condition of the tightened member during the tightening operation, based on the motion information acquired by the motion information acquisition unit.

A bolt tensioning tool is adapted to tension a bolt protruding from a workpiece, and includes a bolt receiving element adapted to be screwed onto the bolt, a nut socket adapted to receive a nut, an axle adapted to exert an axial force on the bolt receiving element, a threaded sleeve arranged to engage the axle and having an internal thread adapted to cooperate with an external thread of the axle such that a relative rotational movement therebetween results in a relative axial displacement between the axle and the threaded sleeve, a supporting sleeve coupled to the threaded sleeve and adapted to selectively bear against the workpiece, and a coupling adapted to connect the nut socket and the supporting sleeve, the coupling is a coupling allowing a limited relative movement between the socket and the sleeve.

A bolt tensioning tool includes a housing, an electric motor positioned within the housing, a tensioning assembly connectable to a bolt for applying tension thereto, and a bolt tension monitoring system. The bolt has a threaded portion and a surface. The bolt tension monitoring system includes a transmitter, a receiver, a sensor housing, and a controller. The sensor housing has an inner wall defining a recess that receives the surface of the bolt. The controller determines a dimension of the bold during a tensioning operation and determines the tension in the bolt based on the dimension. The bolt tension monitoring system monitors the tension of the bolt during a tensioning operation. The tension assembly applies tension to the bolt during the tensioning operation.