A force application assembly, an elevator and a method of elevator rescue. The force application assembly is provided for applying a force to an elevator car when the elevator car and a counterweight are in a balanced state, and the force application assembly includes: a first attachment portion, which is configured to be removably attached to an elevator hoistway; a second attachment portion, one end of which is removably fixed relative to the elevator car or the counterweight, and which is configured to be at least partially elastic; an actuation portion connected between the first attachment portion and the second attachment portion, wherein the first attachment portion is configured to be fixed relative to the actuation portion, and the second attachment portion is configured to be movable relative to the actuation portion; and an operation portion, which is associated with the actuation portion.

An arrangement for aligning a raised load has a rigid carrier element and tension cords secured to and extending down from the carrier element. The lower ends of the tension cords are provided for securing at load engagement points on the load. One tension cord has a length adjustment device extending between upper and lower connection points. The length adjustment device has a housing pivotably secured to the upper connection point. A drive shaft is mounted rotatably in the housing. A drive wheel, a friction disc brake, a load wheel, and a gear mechanism, coupling the drive shaft to the load wheel, are arranged on the drive shaft. The load wheel has over its circumference chain link cavities for individual chain links of a chain sling guided around the load wheel. The chain sling is secured by one of its ends at the lower connection point.

An electric chain block comprising: a main body part; a bucket-mounting bracket including a bucket-mounting part to which a chain bucket for housing a load chain is mounted, wherein: the main body part is provided with a side surface chain entry/exit port, and a shaft recessed part in which a shaft hole for inserting a linking shaft for mounting the upper hook to the main body part opens, and which is recessed from the side surface; the bucket-mounting bracket is provided with a fixing flange part, and a bucket-mounting part which projects to an opposite side to the fixing flange part: and the shaft recessed part is provided with a mounting seat which the fixing flange part is brought into contact with in a direction crossing a first wall surface in which the shaft hole opens and fixed to by a fixer (e.g., a fixing means).

An electric chain block comprising: a main body part; a bucket-mounting bracket including a bucket-mounting part to which a chain bucket for housing a load chain is mounted, wherein: the main body part is provided with a side surface chain entry/exit port, and a shaft recessed part in which a shaft hole for inserting a linking shaft for mounting the upper hook to the main body part opens, and which is recessed from the side surface; the bucket-mounting bracket is provided with a fixing flange part, and a bucket-mounting part which projects to an opposite side to the fixing flange part: and the shaft recessed part is provided with a mounting seat which the fixing flange part is brought into contact with in a direction crossing a first wall surface in which the shaft hole opens and fixed to by a fixer (e.g., a fixing means).

A chain inlet/outlet, from which a load chain on a load side is hauled in or paid out, has a first guide groove having a first longitudinal groove and a first lateral groove. The chain inlet/outlet also has a second guide groove that is provided on a deeper side of a body part than the first guide groove is and has a second longitudinal groove and a second lateral groove. The first guide groove has narrowed parts that determine, when each link of the load chain is pulled in, into which of the first longitudinal groove and the first lateral groove the link is introduced, and expanded groove parts having a width larger than the groove width of the narrowed parts and provided on the outer side, farther away from the center of the chain inlet/outlet than the narrowed parts.

A chain inlet/outlet, from which a load chain on a load side is hauled in or paid out, has a first guide groove having a first longitudinal groove and a first lateral groove. The chain inlet/outlet also has a second guide groove that is provided on a deeper side of a body part than the first guide groove is and has a second longitudinal groove and a second lateral groove. The first guide groove has narrowed parts that determine, when each link of the load chain is pulled in, into which of the first longitudinal groove and the first lateral groove the link is introduced, and expanded groove parts having a width larger than the groove width of the narrowed parts and provided on the outer side, farther away from the center of the chain inlet/outlet than the narrowed parts.

Provided is a chain block with which wheel cover strength can be improved while inhibiting an increase in cost, without the need for separate reinforcement members. A chain block is provided with a wheel cover which is attached to a frame member, and which covers a hand-chain wheel having a hand chain looped thereover. A plurality of fixation holes for having fixation members inserted therethrough during attachment to the frame member are provided in peripheral edge sections of end-surface sides of the wheel cover, said end-surface sides being disposed facing the frame member. Wrap-around portions are provided to wheel-cover side surfaces which intersect the end surfaces, said wrap-around portions being formed so as to surround, at an angle exceeding 90, the fixation holes in the peripheral direction of the fixation holes.

Provided is a chain block with which wheel cover strength can be improved while inhibiting an increase in cost, without the need for separate reinforcement members. A chain block is provided with a wheel cover which is attached to a frame member, and which covers a hand-chain wheel having a hand chain looped thereover. A plurality of fixation holes for having fixation members inserted therethrough during attachment to the frame member are provided in peripheral edge sections of end-surface sides of the wheel cover, said end-surface sides being disposed facing the frame member. Wrap-around portions are provided to wheel-cover side surfaces which intersect the end surfaces, said wrap-around portions being formed so as to surround, at an angle exceeding 90, the fixation holes in the peripheral direction of the fixation holes.

A force application assembly, an elevator and a method of elevator rescue. The force application assembly is provided for applying a force to an elevator car when the elevator car and a counterweight are in a balanced state, and the force application assembly includes: a first attachment portion, which is configured to be removably attached to an elevator hoistway; a second attachment portion, one end of which is removably fixed relative to the elevator car or the counterweight, and which is configured to be at least partially elastic; an actuation portion connected between the first attachment portion and the second attachment portion, wherein the first attachment portion is configured to be fixed relative to the actuation portion, and the second attachment portion is configured to be movable relative to the actuation portion; and an operation portion, which is associated with the actuation portion.

A chain block comprises: a first rotary body in which a first tooth part f is arranged; a second rotary body comprising a second tooth part which opposes to a first tooth part with magnetic attraction force and releasing the magnetic coupling state by sliding toward thrust direction; a clutch pin integrally provided with the second rotary body; a clutch receiving member comprising a plurality of recessed pockets to which the clutch pin enters according to a slide of the second rotary body; wherein the plurality of pockets comprise; a hoisting-side pocket in which a magnetic member is arranged; a lowering-side pocket in which a magnetic member is arranged; and an intermediate pocket which exists between the hoisting-side pocket and the lowering-side pocket and which the clutch pin enters in a state of not being magnetically attracted.