CN201390620Y

CN201390620Y - Integrated twin double-broken-line luffing drum

Info

Publication number: CN201390620Y
Application number: CN200920012741U
Authority: CN
Inventors: 王克剑; 滕达; 王贞观
Original assignee: Liaoning Fuwa Heavy Industry Machinery Co Ltd
Current assignee: Liaoning Fuwa Heavy Industry Machinery Co Ltd
Priority date: 2009-04-03
Filing date: 2009-04-03
Publication date: 2010-01-27
Anticipated expiration: 2019-04-03

Abstract

The utility model relates to an integrated twin double-broken-line luffing drum which is used by a jib luffing system of a large-tonnage caterpillar crane (over 150 tons). The luffing drum is an integrally cast twin drum. The twin drum is an integrally cast drum, on which the twist directions of rope grooves and rope outlets are symmetrically arranged at the left and the right sides of a middle baffle, and the rope outlets are positioned on both sides of the middle baffle. The rope grooves of the luffing drum are respectively twisted to the left and the right, and are designed as double broken lines; moreover, the rope grooves have the following characteristics: the rope-starting parts on both sides are tight, the rope arrangement at the middle is loose, and the baffle is provided with rope-arranging bosses; consequently, the wire ropes wound on the luffing drum have uniform bearing capability, the abrasion between the wire ropes and the axial force applied on the baffle are greatly reduced, and the wire ropes cannot interfere with and squeeze each other and get entangled even if the wire ropes are wound for multiple layers; the size of the drum is reduced, the service lives of the wire ropes are prolonged, the use cost is reduced, and the working efficiency is increased.

Description

The integral duplex dual-polyline variable-amplitude winding drum of crawler crane

One, technical field

The utility model relates to the integral duplex dual-polyline variable-amplitude winding drum that a kind of large-tonnage (more than 150 tons) crawler crane boom luffing device uses.

Two, background technology

At present, the jib luffing device of large-tonnage (more than 150 tons) crawler crane all is that single reel or two single drums of adopting luffing to hold rope carry out the jib luffing device that machinery constitutes mostly, its reel cumulative volume is big, wirerope diameter is thick, and the easy disorder cable of reel has increased the weight of the extrusion abrasion of steel cable.The frequent movement of crawler crane luffing device directly causes the steel cable life-span short, and work efficiency reduces, and use cost increases.

Three, summary of the invention

The purpose of this utility model provides the integrally-built amplitude-changing drum of a kind of duplex dual-polyline, this amplitude-changing drum volume is little, compact conformation, can realize that sub-thread double-rope minor diameter steel cable promotes synchronously, lowering function, and solve the problem that the steel cable that twines on it is prone to extruding, wearing and tearing and disorder cable.

The utility model is achieved in that this amplitude-changing drum is the cast-in-block double crosslinking drum.Described double crosslinking drum is meant its grooving rotation direction, rope outlet inblock cast reel by the left and right symmetric arrangement of middle baffle plate, and rope outlet is positioned at middle baffle plate two sides.Adopt the amplitude-changing drum of said structure, can reduce the volume of luffing device, realized synchronous lifting, the lowering function of sub-thread double-rope minor diameter steel cable.This amplitude-changing drum adopts dual slope grooving structure, promptly is symmetrical arranged the fold line grooves of two sections each 60 ° of angular regions on the grooving circumference, and wherein every section grooving is along steel cable moving direction skew half pitch, pitch of a circumference range bias internal.Will cause each circle of grooving of this amplitude-changing drum that the miles of relative movement of a pitch is arranged like this, make steel cable be subjected to broken line control and reel, control the gap between steel cable, avoid the generation of interference, extruding and disorder cable phenomenon between steel cable.Two side shields of this amplitude-changing drum and middle baffle plate all adopt the control structure of n layer boss, n=1～4, the grooving pitch of every reel of this amplitude-changing drum all adopts tight, the middle loose non-uniform Distribution structure in two ends, has solved extruding, wearing and tearing and the disorder cable problem of the cloth rope grooving of reel to the steel cable generation more effectively.

From technique scheme as can be seen, because the grooving rotation direction left side of this amplitude-changing drum, right opposite, it all is the design of dual slope grooving, and grooving have both sides rise the rope position tight, middle row's rope pine, there are the characteristics of row's rope boss at the baffle plate place, make the steel cable that is wrapped in have uniform load-carrying capacity, wearing and tearing and the suffered axial force of baffle plate between steel cable have been reduced greatly, even carrying out multiple wraps, steel cable mutual interference can not take place yet, extruding and disorder cable phenomenon, reached and reduced the reel volume, prolong steel cable service life, reduce use cost, the purpose of increasing work efficiency.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A cutaway view among Fig. 1;

Fig. 3 is the B-B cutaway view among Fig. 1;

Fig. 4 is the I portion enlarged drawing among Fig. 1.

Five, the specific embodiment

Solid line among Fig. 1 has partly provided the structure of this amplitude-changing drum, its top long and two-short dash line partly is the steel cable work system that is positioned on the amplitude mast, the long and two-short dash line of its both sides partly is synchronously driven motor drive 1, and the reductor of motor drive 1 places its reel inside.

Shown in Fig. 1 to 4, the utility model amplitude-changing drum adopts cast-in-block double crosslinking drum structure, promptly is cast as an integral body.Described double crosslinking drum is left and right symmetric design, and with middle baffle plate 6 boundary, the rotation direction of its row's rope grooving is left and right opposite, and rope outlet 5 is symmetrically distributed in the both sides of middle baffle plate 6.The dual slope grooving structure that row's grooving of this amplitude-changing drum adopts, on the grooving circumference, be symmetrical arranged the fold line grooves of two sections each 60 ° of angular regions, wherein every section grooving is offset half pitch along the steel cable moving direction, pitch of a circumference range bias internal, and its broken line district is c; Each hexagonal angle scope of symmetric arrangement is a straight line portion on the circumference of grooving.Two side shields 2 of this amplitude-changing drum and middle baffle plate 5 all adopt the structure of n layer boss 4, with row's layout of restricting of control steel cable; N=1～4 can be determined according to the winding number of plies of steel cable.The excircle of described middle baffle plate 5 has ratcher function.Pine, the design of non-uniform Distribution closely of two ends in the middle of row's grooving of every reel of this amplitude-changing drum all adopts, and the grooving pitch a at 1～3.5 circle place, both sides of every reel is at 1.035d～1.045d range of sizes, grooving pitch b is at 1.045d～1.065d range of sizes in the middle of it, and d is the nominal diameter of steel cable 3.As: it is 4 that the number of plies is twined in steel cable control, and n is chosen as 4, the optional 1.035d of grooving pitch a of both sides, middle grooving pitch b is chosen as 1.045d; When steel cable twines the number of plies is 1, and n is chosen as 1, the optional 1.045d of grooving pitch a of both sides, and middle grooving pitch b is chosen as 1.065d.

The utility model is reasonable in design, is specially adapted to the jib luffing device of large-tonnage (more than 150 tons) crawler crane.

Claims

1, a kind of integral duplex dual-polyline variable-amplitude winding drum of crawler crane comprises the reel of being with rope outlet, it is characterized in that: this amplitude-changing drum is the cast-in-block double crosslinking drum; Described double crosslinking drum is meant grooving rotation direction, rope outlet (5) the whole reel by the left and right symmetric arrangement of middle baffle plate (6), and rope outlet is positioned at two sides of middle baffle plate (6).

2, the integral duplex dual-polyline variable-amplitude winding drum of crawler crane according to claim 1, it is characterized in that: this amplitude-changing drum adopts dual slope grooving structure, promptly on the grooving circumference, be symmetrical arranged the fold line grooves of two sections each 60 ° of angular regions, wherein every section grooving is along steel cable moving direction skew half pitch, pitch of a circumference range bias internal.

3, the integral duplex dual-polyline variable-amplitude winding drum of crawler crane according to claim 1 and 2 is characterized in that: two side shields (2) of this amplitude-changing drum and middle baffle plate (6) all adopt n layer boss control structure, n=1～4.

4, according to the integral duplex dual-polyline variable-amplitude winding drum of the described crawler crane of one of claim 1～3, it is characterized in that: the grooving pitch of every reel of this amplitude-changing drum adopts tight, the middle loose non-uniform Distribution structure of two ends.

5, the integral duplex dual-polyline variable-amplitude winding drum of crawler crane according to claim 4, it is characterized in that: the grooving pitch at 1～3.5 circle place, every reel both sides of this amplitude-changing drum is at 1.035d～1.045d range of sizes, grooving pitch is at 1.045d～1.065d range of sizes in the middle of it, and d is the steel cable nominal diameter.