| 摘要 |
PURPOSE: To reduce force due to the weight of an object by installing a socket retainer releasably connecting a housing a driving part together, and a body connecting the driving part and a supporting part and then being engaged with a part of the object, respectively. CONSTITUTION: A socket retainer 114 for releasably connecting a housing 112 additionally installed in a hoist ring 102 and a torqued driving part 116 is installed there. Likewise, a body 104 connecting the driving part 116 and a supporting part 122 to each other and then being engaged with an object 200 is installed too. A counterbalance assembling section 110 reduces any force due to the weight of the object 200 when being lifted up to a position where the object 200 might be torqued. In addition, any torque to be applied to the driving part 116 is transmitted to the object 200 via the body 104. Thus, the object 200 is uplifted and torqued. |
