Abstract: A hoist is provided with a braking mechanism comprising: a motor cover that is provided with an outer wall which is provided such that the inner diameter of an inner peripheral portion thereof increases with proximity to one side in the axial direction from the other side; a drum member that is provided with an outer peripheral portion which is located radially inward of the inner peripheral portion of the outer wall and which faces the inner peripheral portion; and a brake shoe that is mounted on the outer peripheral portion. The inner peripheral portion is provided with a blast-treated portion which is blast-treated upon impact by media which contains large amounts of sharp edges among media which contains large amounts of sharp edges and media which contains large amounts of non-sharp edges.

Abstract: This electric hoisting machine comprises: a motor driven by single-phase current; a cylindrical motor housing; a starting capacitor; a operating capacitor; a starting capacitor disconnecting switch; a control unit which controls the operation of the motor and which is covered by a control housing; and a housing case in which small-diameter cylindrical portions for accommodating the starting capacitor, a large-diameter cylindrical portion for accommodating the operating capacitor, and a large-diameter cylindrical portion for accommodating the starting capacitor disconnecting switch are integrally provided in a state of continuing in a horizontal row, the housing case being mounted on the outer periphery of the motor housing in such a manner that the cylindrical portions are oriented parallel to a rotation axis.

Abstract: 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.

Abstract: A chain block including: a gear unit including a pinion gear, and a load gear configured to rotate integrally with a load sheave member; a case body configured to house the gear unit and to be supplied with grease being semifluid or semisolid at a working temperature as a lubricant; and a built-in cover arranged inside the case body, wherein: the built-in cover includes a first peripheral wall part configured to cover an outer peripheral side of the pinion gear, and a second peripheral wall part provided to be larger in diameter than the first peripheral wall part, the first driven gear body including a first large-diameter driven gear meshing with the pinion gear; and the built-in cover is provided in a circulation shape without a break by continuation of the first peripheral wall part and the second peripheral wall part.

Abstract: A three-phase alternating-current power supply compatible electrically driven hoisting machine having a three-phase alternating-current input terminal, a three-phase rectifier circuit, a direct-current circuit, an inverter, and a three-phase alternating-current motor is changed into a single-phase alternating-current power supply compatible electrically driven hoisting machine by attaching a single-phase AC-DC converter unit having a single-phase alternating-current input terminal, a single-phase AC-DC converter, and a direct-current circuit to the three-phase alternating-current power supply compatible electrically driven hoisting machine and connecting the P and N electrodes of a direct-current output terminal of the single-phase AC-DC converter unit to the P and N electrodes of the direct-current circuit, respectively, and further open-circuiting the three-phase alternating-current input terminal.

Abstract: A rope hoist which hoists and lowers a cargo via a wire rope includes: a frame structure which rotatably supports a wheel; a rope drum mechanism which is provided on one side of the frame structure in a width direction, and includes a drum motor which rotates the rope drum; a counterweight which is provided on another side of the frame structure in the width direction and is arranged in a state of having a space with respect to the frame structure; and a control unit which is attached to a side of the counterweight opposite to the rope drum mechanism in the width direction and inverter-controls the drum motor, to the rope drum mechanism side of the counterweight, a braking resistor part which processes regenerative electric power in the inverter control is attached in a state of being located in the space.

Abstract: A rope hoist includes a rope drum mechanism easy to attach to a frame structure and clarified positioning reference. The rope drum is rotatably supported by a first support part on one end side and a second support part on another end side of the rope drum. A pair of supporting ribs having clearances with respect to a first drum support frame is provided with the first support part. A first connection member penetrates the supporting ribs and the first drum support frame in a state of both-end support. A second connection member penetrates a frame attachment portion and a second drum support frame in a state of cantilever. A support shaft couples the first support part and the second support part and is arranged on an axis passing through a position different from positions of the first connection member and the second connection member.

Abstract: A three-phase alternating-current power supply compatible electrically driven hoisting machine having a three-phase alternating-current input terminal, a three-phase rectifier circuit, a direct-current circuit, an inverter, and a three-phase alternating-current motor is changed into a single-phase alternating-current power supply compatible electrically driven hoisting machine by attaching a single-phase AC-DC converter unit having a single-phase alternating-current input terminal, a single-phase AC-DC converter, and a direct-current circuit to the three-phase alternating-current power supply compatible electrically driven hoisting machine and connecting the P and N electrodes of a direct-current output terminal of the single-phase AC-DC converter unit to the P and N electrodes of the direct-current circuit, respectively, and further open-circuiting the three-phase alternating-current input terminal.

Abstract: A chain block includes: a main body frame; and a gear cover that is attached to the main body frame to form an internal space sealed off from an outside between the gear cover and the main body frame, and rotatably supports one end side of a reduction gear member, wherein a gear-side frame part is provided with a bottom part and an outer peripheral wall part projecting from an outer peripheral edge portion of the bottom part, and an upper rib having both ends coupled to the outer peripheral wall part is provided at a portion of the gear-side frame on an upper side where an insertion hole and a link shaft are provided and on a side nearer a center of the internal space than is the outer peripheral wall part, and the upper rib is provided adjacent to the insertion hole and the link shaft.

Abstract: A brake motor is provided with a braking mechanism comprising: a motor cover that is provided with an outer wall which is provided such that the inner diameter of an inner peripheral portion thereof increases with proximity to one side in the axial direction from the other side; a drum member that is provided with an outer peripheral portion which is located radially inward of the inner peripheral portion of the outer wall and which faces the inner peripheral portion; and a brake shoe that is mounted on the outer peripheral portion. The inner peripheral portion is provided with a blast-treated portion which is blast-treated upon impact by media which contains large amounts of sharp edges among media which contains large amounts of sharp edges and media which contains large amounts of non-sharp edges.

Abstract: A rope hoist includes: a rope drum around which a wire rope can be wound; a drum motor for rotating the rope drum; a reduction gear mechanism reducing the rotation of the drum motor and transmitting the rotation to the rope drum; and a control unit controlling driving of the drum motor. The reduction gear mechanism is arranged inside a wall portion provided by being projected from a motor cover of a main body part which is an end frame member supporting the rope drum, a lead wire extended from the drum motor and a cable extended from the control unit are connected via a relay, and the relay is arranged on the outside of the wall portion surrounding the reduction gear mechanism, and housed inside a recess provided on the motor cover.

Abstract: A rope hoist includes: a rope drum around which a wire rope W is wound; a support shaft and a limit switch bolt arranged to be parallel to the rope drum; limit switch mechanisms; and a rope guide mechanism moving in accordance with a winding state of the wire rope W, and making the limit switch mechanisms perform on/off operation. Each of the limit switch mechanisms includes: a limit switch metal fitting into which both of the support shaft and the limit switch bolt are inserted, in which the limit switch metal fitting is sandwiched and fixed by nuts from both sides thereof in an axial direction of the limit switch bolt.

Abstract: Provided is a chain block with which a reduction in size can be achieved while inhibiting a reduction in strength. A chain clock is provided with: a load-sheave hollow shaft which is provided with a load sheave that rotates to feed a load chain, said load-sheave hollow shaft having a hollow core along the axial direction thereof; a drive shaft which is inserted into the hollow core, and which is provided with a flange portion protruding radially outward from one end side to a base side of a separate gear part; and a reduction gear member provided with first reduction gear part which meshes with the gear part. An accommodating recess is provided at the one end side of the hollow core, said accommodating recess having a bottom part which is where the flange part is positioned, and which is in contact with the flange part. An inclined portion, which gradually inclines further towards the gear part side as said inclined portion approaches a center side in the radial direction, is provided to the flange portion.

Abstract: A hook block suspended by a wire rope and provided with: sheave shaft parts for rotatably supporting hook sheaves; a connecting shaft inserted into shaft holes that penetrate the sheave shaft parts in the axial direction; brackets which support the sheave shaft parts by fitting the same in engaging holes in first piece parts, which are provided with second piece parts substantially orthogonal to the first piece parts, and in which insertion holes are formed, the insertion holes enabling the insertion of the upper side of a hook in a mutually facing arrangement; a bracket-fixing member supported by the second piece parts above the second piece parts; and a hook support member rotatably arranged above the bracket-fixing member and fixed to the outer periphery of the upper side of the hook.

Abstract: A chain block is provided including a first frame, a second frame, a wheel cover side structure including a wheel cover which covers the hand wheel and residing on an opposite side of the first frame in a direction away from the second frame, and a gear case side structure including a gear case covering a gear member and residing on an opposite side of the second frame in a direction away from the first frame, and each of the first frame and the second frame is provided with a rolling restriction portion restricting rolling along outer circumferences of the first frame and the second frame in a case of a standing posture in which the first frame and the second frame contact an installation part at the same time.

Abstract: A hand operated pulling and lifting hoist includes: a change gear that engages with a switching pawl fitting provided for an operation lever to convert a manual force applied to the operation lever into a hoist driving force; a fixed support ring disposed for the rotatable mounting of the operation lever about a driving member that is set about the drive shaft to transmit the hoist driving force to the drive shaft; a pivotable support ring formed on the operation lever and rotatably fitted to an internal circumference of the fixed support ring; and a driving-member contact prevention part on the change gear to prevent contact between the pivotable support ring and the driving member.

Abstract: 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.