CN-224212331-U - Safety limiting device for steel wire rope electric hoist

Abstract

The utility model discloses a safety limiting device of a steel wire rope electric hoist, which comprises an outer cover, wherein a winding drum is rotatably connected in the outer cover, a driving motor and a reduction gearbox are fixed on one side of the outer cover, a steel wire rope is wound on the winding drum, the steel wire rope bypasses a lifting hook and is then fixed on the outer cover, the lifting hook is positioned below the winding drum, a limiting component is arranged on the reduction gearbox, a walking component is arranged at the top of the outer cover, the limiting component comprises a limiting gear and a support, a rack is arranged on one side of the support, the limiting gear is in transmission connection with the driving motor through the reduction gearbox, and the limiting gear is meshed with the rack.

Inventors

• WANG XIUHUI

Assignees

• 拓普泰克起重机械无锡有限公司

Dates

Publication Date

20260508

Application Date

20250603

Claims (4)

1. 1. The safety limiting device for the steel wire rope electric hoist is characterized by comprising an outer cover, wherein a winding drum is rotatably connected in the outer cover, a driving motor and a reduction gearbox are fixed on one side of the outer cover, the driving motor drives the winding drum to rotate through the reduction gearbox, a steel wire rope is wound on the winding drum, the steel wire rope is fixed on the outer cover after bypassing a lifting hook, the lifting hook is positioned below the winding drum, a limiting assembly is arranged on the reduction gearbox, and a traveling assembly is arranged at the top of the outer cover; The limiting assembly comprises a limiting gear and a support, wherein the bottom of the periphery of the support is provided with a sliding block, the sliding block is in sliding fit with the guide rail, one side of the support is provided with a rack, the limiting gear is connected with a driving motor in a transmission manner through a reduction gearbox, the limiting gear is meshed with the rack, the top of the support is provided with an adjusting unit, the adjusting unit drives an adjusting plate to move, and the adjusting plate is located in the support.
2. 2. The steel wire rope electric hoist safety limiting device according to claim 1, wherein the traveling assembly comprises a traveling gear box, a traveling motor is arranged on one side of the traveling gear box, two traveling wheels are arranged on the other side of the traveling gear box, and the traveling motor drives the two traveling wheels to rotate in the same direction through the traveling gear box.
3. 3. The steel wire rope electric hoist safety limiting device according to claim 1, wherein a driving gear and a gear ring are arranged in the reduction gearbox, the driving gear is in transmission connection with an output shaft of the driving motor, the gear ring is coaxially and fixedly arranged with the winding drum, the driving gear is meshed with a driven gear, the driven gear is coaxially arranged with the driving gear, the driving gear is meshed with the gear ring, the gear ring is meshed with a transmission gear, the transmission gear is coaxially arranged with a first bevel gear, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is coaxially arranged with the limiting gear.
4. 4. The steel wire rope electric hoist safety limiting device according to claim 1, wherein the adjusting unit comprises a limiting motor and a screw rod, the limiting motor is fixed at one end of a support, facing a limiting gear, of the support, one end of the screw rod is in transmission connection with an output shaft of the limiting motor, the other end of the screw rod is rotatably connected to one end of the support, far away from the limiting gear, of the support, a locating plate is in threaded fit with the screw rod, guide rods are arranged on two sides of the screw rod in parallel, the guide rods are fixed at the top of the support, and the guide rods penetrate through the locating plate.

Description

Safety limiting device for steel wire rope electric hoist Technical Field The utility model relates to a hoisting technology, in particular to a safety limiting device of a steel wire rope electric hoist. Background The steel wire rope electric hoist is small hoisting equipment with the advantages of compact structure, light weight, small volume, strong universality of parts, convenient operation and the like, is mainly used for lifting, pulling and moving, loading and unloading heavy objects, and carrying out oil tank flip-chip welding, such as installation and moving of various large and medium-sized concrete, steel structures and mechanical equipment, and is suitable for construction and construction engineering of buildings and factories and mines, bridge construction, mechanical equipment of foundation construction engineering such as electric power, ship, automobile manufacturing, construction, highway, bridge, metallurgy, mine, side slope tunnel, well treatment and protection and the like. The electric hoist is widely applied to hoisting heavy objects, the objects can not stop when the objects fall to the lower limit of the height, and the objects are extremely easy to collide with the ground to damage when the operators are out of the way of observation. Disclosure of utility model In order to overcome the defects in the prior art, the utility model provides the safety limiting device for the steel wire rope electric hoist, which can limit the upper limit of the lifting height and the lower limit of the descending height of the lifting hook and prevent the lifting hook from impacting the electric hoist and goods from directly impacting the ground. The technical scheme includes that the safety limiting device of the steel wire rope electric hoist comprises an outer cover, a winding drum is rotatably connected in the outer cover, a driving motor and a reduction gearbox are fixed on one side of the outer cover, the driving motor drives the winding drum to rotate through the reduction gearbox, a steel wire rope is wound on the winding drum, the steel wire rope bypasses a lifting hook and is then fixed on the outer cover, the lifting hook is positioned below the winding drum, a limiting assembly is arranged on the reduction gearbox, and a traveling assembly is arranged at the top of the outer cover; The limiting assembly comprises a limiting gear and a support, wherein the bottom of the periphery of the support is provided with a sliding block, the sliding block is in sliding fit with the guide rail, one side of the support is provided with a rack, the limiting gear is connected with a driving motor in a transmission manner through a reduction gearbox, the limiting gear is meshed with the rack, the top of the support is provided with an adjusting unit, the adjusting unit drives an adjusting plate to move, and the adjusting plate is located in the support. Preferably, the walking assembly comprises a walking gear box, a walking motor is arranged on one side of the walking gear box, two walking wheels are arranged on the other side of the walking gear box, and the walking motor drives the two walking wheels to rotate in the same direction through the walking gear box. Preferably, a driving gear and a gear ring are arranged in the reduction gearbox, the driving gear is in transmission connection with an output shaft of the driving motor, the gear ring is coaxially and fixedly arranged with the winding drum, the driving gear is meshed with a driven gear, the driven gear is coaxially arranged with a driving gear, the driving gear is meshed with the gear ring, the gear ring is meshed with a transmission gear, the transmission gear is coaxially arranged with a first bevel gear, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is coaxially arranged with a limiting gear. Preferably, the adjusting unit comprises a limit motor and a screw rod, the limit motor is fixed at one end of the support, facing to the limit gear, of the screw rod, one end of the screw rod is in transmission connection with an output shaft of the limit motor, the other end of the screw rod is rotatably connected with one end of the support, far away from the limit gear, of the screw rod, the screw rod is in threaded fit with a locating plate, guide rods are arranged on two sides of the screw rod in parallel, the guide rods are fixed at the top of the support, and the guide rods penetrate through the locating plate. In summary, the present utility model achieves the following technical effects: According to the safety limiting device of the steel wire rope electric hoist, the limiting assembly is adopted, the limiting gear can be driven to rotate along with rotation of the winding drum, so that the rack and the support move, when two ends of the support are abutted against the limiting gear, the limiting gear cannot continue to rotate, and therefore the upper limit of the lifting height and the lower limit of