Winch mechanism mass balance device for monorail low headroom wire rope electric hoist

Abstract

The invention discloses hoisting mechanism mass balance devices of a single-track low-clearance steel wire rope electric hoist. The hoisting mechanism mass balance devices are arranged on two suspended beams in pairs. Each hoisting mechanism mass balance device comprises a balance rack, a balance axle component with a balance pulley, and an elastic force fine adjustment component, wherein the balance rack is provided with a bottom sleeve, balance shaft holes and a pivot hole in the bottom, middle and top, respectively; a turning head is pivoted to the pivot hole; the balance axle component is rotatably arranged at the balance shaft holes; the bottom sleeve sleeves the suspended beams in an axially positioning manner and corresponds to a driving wheel; the elastic force fine adjustment component comprises a supporting screw rod, and an elastic piece and an adjusting nut which are respectively screwed to the supporting screw rod in a sleeving manner; the upper end of the supporting screw rod penetrates through a central hole of the turning head, and the lower end of the supporting screw rod is fixed on the inner side of a main wallboard; the elastic force fine adjustment component converts the elastic force into upper pressure of the balance pulley on a single-track lower-wing bottom surface in a gradient mode according to the hoisting mechanism mass. According to the scheme, a counter weight is omitted, the dead weight of the electric hoist adopting the mass balance device and the balance of the electric hoist in the no-load walking period can be ensured.

Description

【Technical field】 [0001] The invention relates to a mass balance device for a hoisting mechanism of a monorail low clearance steel wire rope electric hoist, which belongs to the technical field of hoisting machinery. 【Background technique】 [0002] CD1 type wire rope electric hoist has a typical series layout. There is a central shaft running through the reel part. An integrated lifting motor and hoisting brake are installed on one end of the central shaft, and a hoisting reducer is installed on the other end of the central shaft. , the running trolley and the trolley driving device are installed directly above the drum part. Due to its symmetrical structure, there is no need to set a counterweight under no-load conditions. The running trolley runs along the track beam, which makes the space utilization rate under the beam relatively low. The space occupied by the main body of the hoist is limited and affects the lifting height of the CD1 type wire rope electric hoist. The m...

AI Technical Summary

Problems solved by technology

[0004] However, the existing monorail low headroom wire rope electric hoist has an insurmountable shortcoming: the mass of the hoisting mechanism is relatively huge, while the mass of the wheel running mechanism is relatively small (the mass of the electric control box is almost negligible), therefore, under no-load conditions, it is necessary to Relying on the large number of counterweights used to balance the quality of the hoisting mechanism, the counterweights account for nearly 1 / 3 of the mass of the whole machine, which not only increases the cost of the product, but also increases the load-bearing capacity of the monorail, thereby increasing The transportation cost and fuel cost of the product are not conducive to environmental protection

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