CN201686396U

CN201686396U - Single-hook rotary sling for uplifting of large crane

Info

Publication number: CN201686396U
Application number: CN 201020214644
Authority: CN
Inventors: 张勤; 黄之涛; 张容春; 董元跃; 吴艳青; 陈刚
Original assignee: China Shipbuilding NDRI Engineering Co Ltd
Current assignee: China Shipbuilding NDRI Engineering Co Ltd
Priority date: 2010-06-01
Filing date: 2010-06-01
Publication date: 2010-12-29
Anticipated expiration: 2020-06-01

Abstract

The utility model discloses a single-hook rotary sling for uplifting of a large crane, which comprises a lifting beam, a lifting hook spindle, an inner gear ring, a lifting hook, a speed reduction motor, a universal joint, a thrust bearing and a lifting hook nut. The lifting beam is a box-shaped fish-belly beam, a spindle hole is perpendicularly arranged in the middle of the lifting beam, the lifting hook spindle is a conical stepped shaft, the inner gear ring is provided with a connection flange, an outer ring is provided with a rotary bearing, the lifting hook is in an inverted 'T' shape, a bottom frame is arranged on the speed reduction motor, a small gear is arranged at an output end, a first key way and a shear block are arranged on the end face of the lifting hook nut, the lifting hook spindle is arranged in the spindle hole of the lifting beam, the thrust bearing is sleeved onto the small end of the lifting hook spindle, the lifting hook nut is connected to the lifting hook spindle through the shear block, the inner gear ring is connected with the lifting hook nut, the speed reduction motor is connected with the rotary bearing, the small gear is meshed with the inner gear ring, the bottom frame is connected onto a rotation prevention seat of the lifting beam, and one end of the universal joint is hinged with the lifting hook, the other end is hinged with the lifting hook spindle. The single hook rotary sling has simple structure and large bearing weight, can automatically rotate, has fine steadiness, is high in load change resistance capacity, and is convenient and safe in use.

Description

The goliath hoisting-purposed single-hook rotary hoister

Technical field

The utility model relates to the suspender that is used for gate-type or crane in bridge type of elevator machinery technical field, especially a kind of goliath hoisting-purposed single-hook rotary hoister.

Background technology

When implementing lifting operation for large-scale overweight object, available two hoisting cranes adopt the mode hoisting object that lifts, and for guaranteeing the security implementation of lifting operation, must lift suspender by attached single raise under the suspension hook of two hoisting cranes.Owing to lift the particularity of operation, two hoisting cranes always produce asynchrony phenomenon in operation process, and the strained condition that causes lifting suspender changes, and this variation directly influences the safety that large-scale overweight object is implemented lifting operation.Prior art lift suspender, in the lifting operation process, have following defective: a) in the hoisting crane operational process, because asynchronous in operation process of two hoisting cranes or caused the suspension hook spindle deformation by the swing of lifting object even fracture; B) the suspension hook main shaft can't rotate automatically with respect to hanging beam, makes by the lifting object to be not easy to correct contraposition and to lay; C) owing to caused hook nut loosening by the rotation of lifting object; Above defective has not only restricted the normal use that lifts suspender, and hidden danger has been buried in safety in production.

The utility model content

The purpose of this utility model is a kind of goliath hoisting-purposed single-hook rotary hoister that provides at the deficiencies in the prior art, and it is simple in structure, good stability, and it is strong to resist the live load ability, safe and convenient to use.

The concrete technical scheme that realizes the utility model purpose is:

A kind of goliath hoisting-purposed single-hook rotary hoister, characteristics are that it comprises hanging beam, suspension hook main shaft, internally toothed annulus, suspension hook, reducing motor, universal-joint, thrust baring and hook nut, and described hanging beam is that box-shaped fish belly sill, its middle part vertically are provided with spindle hole, are arranged with the anti-swivel base of column above the box-shaped; Described suspension hook main shaft is that type conical bench axle, its small end are provided with that outside thread, termination are provided with first keyway, big end radially is provided with first axis hole; Described internally toothed annulus be circular, its lower surface is provided with butt flange, the ring-type outer ring is provided with swing bearing; That described suspension hook is is inverse-T-shaped, its middle part is provided with second axis hole; Described reducing motor below is provided with underframe, mouth is provided with miniature gears; Described hook nut end face is provided with second keyway, the anti-piece of cutting; The suspension hook main shaft is located in the spindle hole of hanging beam, hanging beam is stretched out at its two ends and small end upwards; Thrust baring is set on the suspension hook main shaft small end and between hook nut and hanging beam; Hook nut is threadedly connected to suspension hook main shaft small end and second keyway prevents that with first keyway warp of suspension hook main shaft cutting piece is connected; Internally toothed annulus is connected by bolt with hook nut through butt flange; Swing bearing bolted connection, it on miniature gears and the internally toothed annulus engagement of reducing motor outside underframe and internally toothed annulus, underframe is connected on the anti-swivel base of hanging beam; Second axis hole of universal-joint one end and suspension hook is hinged, first axis hole of the other end and suspension hook main shaft is hinged; Be provided with plain bearing in the spindle hole of suspension hook main shaft and hanging beam.

The utility model is simple in structure, and load capacity is big, can rotate automatically, and good stability, it is strong to resist the live load ability, safe and convenient to use, especially is fit to adopt the mode that lifts that large-sized object is implemented loading and unloading, carrying and contraposition and installs.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the birds-eye view of Fig. 1

Fig. 3 is the local enlarged diagram in A place of the utility model Fig. 1

The specific embodiment

Consult Fig. 1, Fig. 2, Fig. 3, the utility model comprises hanging beam 1, suspension hook main shaft 2, internally toothed annulus 3, suspension hook 4, reducing motor 5, universal-joint 6, thrust baring 7 and hook nut 8, and described hanging beam 1 vertically is provided with spindle hole 11, is arranged with the anti-swivel base 12 of column above the box-shaped for box-shaped fish belly sill, its middle part; Described suspension hook main shaft 2 is provided with first keyway 24 for type conical bench axle, its small end are provided with outside thread, termination, big end radially is provided with first axis hole 25; Described internally toothed annulus 3 for circular, its lower surface is provided with butt flange 33, the ring-type outer ring is provided with swing bearing 32; That described suspension hook 4 is is inverse-T-shaped, its middle part is provided with second axis hole 41; Described reducing motor 5 belows are provided with underframe 52, mouth is provided with miniature gears 51; Described hook nut 8 end faces are provided with second keyway 81, the anti-piece 82 of cutting; Suspension hook main shaft 2 is located in the spindle hole 11 of hanging beam 1, hanging beam 1 is stretched out at its two ends and small end upwards; Thrust baring 7 is set on suspension hook main shaft 2 small ends and between hook nut 8 and hanging beam 1; Hook nut 8 is threadedly connected to suspension hook main shaft 2 small ends and second keyway 81 prevents that with first keyway, 24 warps of suspension hook main shaft 2 cutting piece 82 is connected; Internally toothed annulus 3 is connected by bolt through butt flange 33 and hook nut 8; Swing bearing 32 bolted connections, it on miniature gears 51 and internally toothed annulus 33 engagements of reducing motor 5 outside underframe 52 and internally toothed annulus 3, underframe 52 is connected on the anti-swivel base 12 of hanging beam 1; Second axis hole of universal-joint 6 one ends and suspension hook 4 is 41 hinged, first axis hole 25 of the other end and suspension hook main shaft 2 is hinged; Be provided with plain bearing 18 in the spindle hole 11 of described suspension hook main shaft 2 and hanging beam 1.

The utility model is to use like this:

Consult Fig. 1, Fig. 2, Fig. 3, the utility model is used for two hoisting cranes and adopts the mode hoisting object that lifts, the suspension hook of two hoisting cranes is articulated with the hook point 17 at hanging beam 1 two ends respectively, regulating lifting rope makes hanging beam 1 be in horizontality, on suspension hook 4 of the present utility model, articulate hoisting object, two hoisting cranes of synchronized operation realize that two hoisting cranes lift operation.When the hoisting object handling needs rotation to dock with target bit above target bit, can control reducing motor 5, miniature gears 51 on the reducing motor 5 rotates, drives internally toothed annulus 3 and drives butt flange 33 rotations, because butt flange 33 is connected through several bolt with hook nut 8, at this moment, internally toothed annulus 3 drives suspension hook main shafts 2 and drives hoisting object and rotate, and hoisting object is aimed at and docked with target bit, the purpose of the mode hoisting object that realization lifts with two hoisting cranes.

Further specify as follows in conjunction with the technical solution of the utility model: a) consult Fig. 1, Fig. 3, implement in the lifting operation process for large-scale overweight object, because hoisting object is in motion, the static state of motion again under the effect of hoisting crane, hoisting object ceaselessly produces swing on suspension hook 4, make suspension hook main shaft 2 bear stretch bending combination and impact load; Suspension hook main shaft 2 of the present utility model is designed to the type conical bench axle, and its purpose is exactly to improve the bending strength of suspension hook main shaft 2 big ends; Between suspension hook main shaft 2 and suspension hook 4, set up universal-joint 6, be used to cushion the impact load that hoisting object acts on suspension hook main shaft 2, improve the strained condition of suspension hook main shaft 2.

B) consult Fig. 3, need flat turn a corner when dock with target bit when hoisting object is transported to target bit top, the utility model can drive suspension hook main shafts 2 by reducing motor 5 and rotate, the realization hoisting object purpose that corner docks with target bit of flatting turn; The miniature gears 51 of reducing motor 5 adopts internal tooth to rotate design with internally toothed annulus 3, makes the drive system structure compactness, is beneficial to the oad that reduces suspender.

C) consult Fig. 3, for preventing to become flexible owing to 2 rotations of suspension hook main shaft cause hook nut 8 in the hoisting object process, the utility model is provided with the anti-piece 82 of cutting at second keyway 81 of

hook nut

8 and 24 in first keyway of suspension hook main shaft 2; In the work, between internally toothed annulus 3, suspension hook main shaft 2 and suspension hook 4 during transfer torque, the anti-piece 82 of cutting pins relatively rotating between suspension hook main shafts 2 and the hook nut 8, can prevent effectively that hook nut 8 from becoming flexible.

D) consult Fig. 3, the utility model reducing motor 5 is through underframe 52 and swing bearing 32 bolted connections of internally toothed annulus 3, miniature gears 51 meshes with internally toothed annulus 33 and underframe 52 is connected on the anti-swivel base 12 of hanging beam 1 it on, this structure is convenient to the installation of reducing motor 5, make gear in fully enclosed space work relatively, guarantee the gear meshing precision, helped the maintenance of gear.2 pairs of reducing motors of suspension hook main shaft, 5 generations recoil upwards when the suspender excessive descent also can be alleviated and discharge to this structure.

Claims

1. goliath hoisting-purposed single-hook rotary hoister, it is characterized in that it comprises hanging beam (1), suspension hook main shaft (2), internally toothed annulus (3), suspension hook (4), reducing motor (5), universal-joint (6), thrust baring (7) and hook nut (8), described hanging beam (1) be box-shaped fish belly sill, its middle part vertically be provided with spindle hole (11), above be arranged with the anti-swivel base (12) of column; Described suspension hook main shaft (2) is that type conical bench axle, its small end are provided with that outside thread, termination are provided with first keyway (24), big end radially is provided with first axis hole (25); Described internally toothed annulus (3) for circular, its lower surface is provided with butt flange (33), the ring-type outer ring is provided with swing bearing (32); That described suspension hook (4) is is inverse-T-shaped, its middle part is provided with second axis hole (41); Described reducing motor (5) below is provided with underframe (52), mouth is provided with miniature gears (51); Described hook nut (8) end face is provided with second keyway (81), the anti-piece (82) of cutting; Suspension hook main shaft (2) is located in the spindle hole (11) of hanging beam (1), hanging beam (1) is stretched out at its two ends and small end upwards; Thrust baring (7) is set on suspension hook main shaft (2) small end and is positioned between hook nut (8) and the hanging beam (1); Hook nut (8) is threadedly connected to suspension hook main shaft (2) small end and second keyway (81) prevents that with first keyway (24) warp of suspension hook main shaft (2) cutting piece (82) key is connected; Internally toothed annulus (3) is connected by bolt with hook nut (8) through butt flange (33); Swing bearing (32) bolted connection, it on miniature gears (51) and internally toothed annulus (3) engagement of reducing motor (5) outside underframe 52 and internally toothed annulus (3), underframe (52) is connected on the anti-swivel base (12) of hanging beam (1); Second axis hole (41) of universal-joint (6) one ends and suspension hook (4) is hinged, first axis hole (25) of the other end and suspension hook main shaft (2) is hinged.

2. goliath hoisting-purposed single-hook rotary hoister according to claim 1 is characterized in that being provided with plain bearing (18) in the spindle hole (11) of suspension hook main shaft (2) and hanging beam (1).