A method of installing a plurality of nut and bolt fasteners upon a structure is disclosed. The method includes placing a jig around the nut of a first fastener and the nut of a second fastener, securing the jig to the first fastener, and then using a power tool to tighten the nut of the second fastener to a target torque. The step of tightening the nut comprises engaging a socket portion of the power tool with the nut, securing the power tool to the jig such that a handle portion of the power tool is prevented from rotating about an axis of rotation of a socket portion of the power tool when the nut is being rotated by the socket portion. A jig, jig fasteners for securing a jig to a fastener, and a fastening head for a power tool are disclosed.

A method of installing a plurality of nut and bolt fasteners upon a structure is disclosed. The method includes placing a jig around the nut of a first fastener and the nut of a second fastener, securing the jig to the first fastener, and then using a power tool to tighten the nut of the second fastener to a target torque. The step of tightening the nut comprises engaging a socket portion of the power tool with the nut, securing the power tool to the jig such that a handle portion of the power tool is prevented from rotating about an axis of rotation of a socket portion of the power tool when the nut is being rotated by the socket portion. A jig, jig fasteners for securing a jig to a fastener, and a fastening head for a power tool are disclosed.

A system for changing a height of a hanger mounting plate, may include a frame; a hanger arm fixing device mounted at an upper side of the frame in a longitudinal direction of the vehicle body to be movable in the longitudinal direction of the vehicle body and fixing both sides of the connecting blocks; a pin fixing device which is mounted at a center portion of the frame to be movable in a width direction of the vehicle body and separates or couples the coupling pin from/to the connecting block; and a mounting plate height adjusting device mounted at a lower side of the center portion of the frame to be movable in the height direction of the vehicle body in a state in which the mounting plate height adjusting device supports a lower portion of the mounting plate, and adjusting a height of the mounting plate.

A system for changing a height of a hanger mounting plate, may include a frame; a hanger arm fixing device mounted at an upper side of the frame in a longitudinal direction of the vehicle body to be movable in the longitudinal direction of the vehicle body and fixing both sides of the connecting blocks; a pin fixing device which is mounted at a center portion of the frame to be movable in a width direction of the vehicle body and separates or couples the coupling pin from/to the connecting block; and a mounting plate height adjusting device mounted at a lower side of the center portion of the frame to be movable in the height direction of the vehicle body in a state in which the mounting plate height adjusting device supports a lower portion of the mounting plate, and adjusting a height of the mounting plate.

The present disclosure relates to a jig for manufacturing a reinforcement cage, which comprises a base member, a plurality of rollers disposed on the base member and spaced at intervals, a trolley which is movable on the base member; a driving device for driving the trolley; and a member for positioning the main reinforcement disposed at the first end of the base member.

The present disclosure relates to a jig for manufacturing a reinforcement cage, which comprises a base member, a plurality of rollers disposed on the base member and spaced at intervals, a trolley which is movable on the base member; a driving device for driving the trolley; and a member for positioning the main reinforcement disposed at the first end of the base member.

A component production method includes: a step of binding a long frame by a plurality of support devices arranged along the frame; a step of measuring, with a distance sensor, a distance to the frame supported by the plurality of support devices; a step in which, based on frame shape data prerecorded in a memory, the support devices move support positions where the frame is supported so that a calculated radial position of the frame being supported by the support devices matches the data about the frame shape; a step of fixing the frame in a state in which the data about the frame shape matches the radial position of the frame; and a step of performing a hole-making operation on the fixed frame.

A component production method includes: a step of binding a long frame by a plurality of support devices arranged along the frame; a step of measuring, with a distance sensor, a distance to the frame supported by the plurality of support devices; a step in which, based on frame shape data prerecorded in a memory, the support devices move support positions where the frame is supported so that a calculated radial position of the frame being supported by the support devices matches the data about the frame shape; a step of fixing the frame in a state in which the data about the frame shape matches the radial position of the frame; and a step of performing a hole-making operation on the fixed frame.

An attachment jig includes a pressing member having a positioning portion configured to position a target component in a direction where an attachment target surface of a fixing target member extends, and a pressing portion configured to press the target component positioned by the positioning portion toward the attachment target surface, and a detachment member having a first abutting portion configured to come into contact with the attachment target surface, the first support surface, and the second support surface, and a second abutting portion configured to come into contact with the pressing member on the attachment target surface, is the detachment member being configured to cause the pressing member to be positioned in a direction where the attachment target surface extends with respect to the first support surface and the second support surface, and detachable from the pressing member.

An attachment jig includes a pressing member having a positioning portion configured to position a target component in a direction where an attachment target surface of a fixing target member extends, and a pressing portion configured to press the target component positioned by the positioning portion toward the attachment target surface, and a detachment member having a first abutting portion configured to come into contact with the attachment target surface, the first support surface, and the second support surface, and a second abutting portion configured to come into contact with the pressing member on the attachment target surface, is the detachment member being configured to cause the pressing member to be positioned in a direction where the attachment target surface extends with respect to the first support surface and the second support surface, and detachable from the pressing member.