Fixing jig, steel material holding device, and steel material holding method

Patent metadata

Field	Value
Publication number	US-11117225-B2
Application number	US-201816483291-A
Country	US
Kind code	B2
Filing date	Jan 29, 2018
Priority date	Feb 3, 2017
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A fixing jig for fixing a steel material includes a nut, a screw shaft screwed to the nut, a handle attached to the screw shaft, and a contact portion relatively rotatably attached to the handle. A plurality of screw holes are formed in an outer peripheral portion of the contact portion. The first extension member includes a long cylindrical portion, an extension side contact portion provided at a tip end portion of the cylindrical portion, and a connecting portion provided at a base end portion of the cylindrical portion and connected to the contact portion. The connecting portion includes a plurality of through holes formed in an outer peripheral portion of the connecting portion, and long engagement holes each extending from each of the plurality of through holes.

First claim

The invention claimed is:

1. A fixing jig configured to press and fix a steel material, comprising:
a nut provided on a predetermined attaching base;
a screw shaft screwed to the nut;
a handle attached to the screw shaft, the handle being configured to rotate the screw shaft; and
a contact portion relatively rotatably attached to the handle and configured to contact the steel material or a first extension member,
wherein a plurality of screw holes are formed in an outer peripheral portion of the contact portion,
the first extension member is attachable to and detachable from the contact portion,
the first extension member includes: a long cylindrical portion; an extension side contact portion provided at a tip end portion of the cylindrical portion and configured to contact the steel material or a second extension member; and a connecting portion provided at a base end portion of the cylindrical portion and connected to the contact portion,
the connecting portion includes: a plurality of through holes formed in an outer peripheral portion of the connecting portion; and long engagement holes each extending from each of the plurality of through holes, and
when the connecting portion of the first extension member is connected to the contact portion, a bolt is engaged with the screw hole formed in the contact portion along a longitudinal direction of the first extension member, and the bolt is engaged with the long engagement hole via the through hole of the connecting portion.

2. The fixing jig according to claim 1 , wherein the plurality of through holes are formed symmetrically at even-numbered positions in a radial direction.

3. The fixing jig according to claim 2 , wherein the bolt includes a circular head portion which is larger than a diameter of the screw shaft, the diameter of the screw shaft is 10 mm or more, and a diameter of the head portion is 1.1 to 1.5 times of the diameter of the screw shaft.

4. The fixing jig according to claim 1 , further comprising:
the second extension member detachably attached to the extension side contact portion of the first extension member,
wherein the second extension member includes an extension side contact portion configured to contact the steel material at a tip end portion of the second extension member.

5. The fixing jig according to claim 4 , wherein a contact area of at least one of the contact portion of the fixing jig, the extension side contact portion of the first extension member, and the extension side contact portion of the second extension member is within a range of 2500 to 3500 mm 2 .

6. The fixing jig according to claim 1 , wherein the bolt includes a circular head portion which is larger than a diameter of the screw shaft, the diameter of the screw shaft is 10 mm or more, and a diameter of the head portion is 1.1 to 1.5 times of the diameter of the screw shaft.

7. A steel material holding device configured to operate at least in a pair, hold a long steel material and rotate the steel material in an arbitrary posture, the steel material holding device comprising:
a holding portion, which is formed in an annular shape and provided upright along a vertical direction, the holding portion being configured to accommodate the steel material therein and hold the steel material; and
a rotating portion that rotatably supports the holding portion,
wherein the holding portion includes a plurality of fixing jigs provided on each inner surface of the holding portion, the fixing jigs being configured to press and fix the steel material at least in a first direction along a radial direction of the holding portion, and a second direction orthogonal to the first direction and along the radial direction of the holding portion, and
at least one of the plurality of the fixing jigs is the fixing jig according to claim 1 .

8. A fixing jig configured to press and fix a steel material, comprising:
a nut provided on a predetermined attaching base;
a screw shaft screwed to the nut;
a handle attached to the screw shaft, the handle being configured to rotate the screw shaft; and
a contact portion relatively rotatably attached to the handle and configured to contact the steel material or a first extension member,
wherein the first extension member is attachable to and detachable from the contact portion,
the first extension member includes:

a long cylindrical portion;
an extension side contact portion provided at a tip end portion of the cylindrical portion; and
a connecting portion provided at a base end portion of the cylindrical portion and connected to the contact portion,
a second extension member is connected to the extension side contact portion of the first extension member via a hinge such that, in a first position, the extension side contact portion of the first extension member is connected to a connecting portion of the second extension member and, in a second position, the extension side contact portion of the first extension member is configured to contact the steel material, and
the second extension member includes an extension side contact portion configured to contact the steel material at a tip end portion of the second extension member.

9. A steel material holding device configured to operate at least in a pair, hold a long steel material and rotate the steel material in an arbitrary posture, the steel material holding device comprising:
a holding portion, which is formed in an annular shape and provided upright along a vertical direction, the holding portion being configured to accommodate the steel material therein and hold the steel material; and
a rotating portion that rotatably supports the holding portion,
wherein the holding portion includes a plurality of fixing jigs provided on each inner surface of the holding portion, the fixing jigs being configured to press and fix the steel material at least in a first direction along a radial direction of the holding portion, and a second direction orthogonal to the first direction and along the radial direction of the holding portion, and
at least one of the plurality of the fixing jigs is the fixing jig according to claim 8 .

10. The fixing jig according to claim 8 , the hinge is positioned to connect the extension side contact portion of the first extension member to a connecting portion of the second member, the connection portion being located at an opposite end to the tip end portion of the second member.

11. A steel material holding method using a steel material holding device,
wherein the steel material holding device includes: a holding portion, which is formed in an annular shape and provided upright along a vertical direction, the holding portion being configured to accommodate a steel material therein and hold the steel material; and a rotating portion that rotatably supports the holding portion,
the holding portion is openable and closable,
the holding portion includes four fixing jigs provided on each inner surface of the holding portion, the fixing jigs being configured to press and fix the steel material in a first direction along a radial direction of the holding portion, and a second direction orthogonal to the first direction and along the radial direction of the holding portion, and
the four fixing jigs each include: a nut attached to the holding portion; a screw shaft screwed to the nut; a handle attached to the screw shaft, the handle being configured to rotate the screw shaft; and a contact portion relatively rotatably attached to the handle and being configured to contact the steel material,
the steel material holding method comprising:
a pre-mounting rotating step of rotating the holding portion by the rotating portion to make the fir

Assignees

• Kobe Steel Ltd

Inventors

• Kishikawa hirohisa
• Takada Shigeto
• Taniguchi Yuji
• Takemura Yoshiya

Classifications

• B23K37/0443 Primary

  Jigs · CPC title

• B23K2101/28

  Beams · CPC title

• B23Q3/06

  Work-clamping means · CPC title

• B23K37/047 Primary

  moving work to adjust its position between soldering, welding or cutting steps (B23K37/053 takes precedence) · CPC title

• B23K2103/04

  Steel {or steel} alloys · CPC title