CN201390595Y

CN201390595Y - Hook assembly of heavy crane

Info

Publication number: CN201390595Y
Application number: CN200920011075U
Authority: CN
Inventors: 田树海; 邵龙成
Original assignee: Dalian Huarui Co Ltd
Current assignee: Dalian Huarui Co Ltd
Priority date: 2009-03-02
Filing date: 2009-03-02
Publication date: 2010-01-27
Anticipated expiration: 2019-03-02

Abstract

The utility model discloses a hook assembly of a heavy crane, which mainly comprises a pulley, two pulley shafts, a spherical-roller bearing, a spherical-roller thrush bearing, a hook nut, an anti-falling chain, a pulley bracket, a cardinal axis I, a balance beam, a cardinal axis II, a hook shaft, a hook body upper part and a hook body. The pulley shafts divide the pulley into two groups. Each group is connected with a pulley bracket, so that two pulley groups are formed. The pulley bracket is connected with the balance beam through the cardinal axis I. the balance beam is connected with the hook shaft through the cardinal axis II. The lower part of the hook shaft is connected with the hook nut through threads. The upper part of the hook body is connected with the hook body in a welding way. The hook assembly solves the deflection problem caused by the length change of a wire rope, ensures that the processing and installation of large scale forging hook shaft and forging hook body become simple, and are easier to realize. The hook assembly has simple structure form, is convenient to be installed, and has low cost.

Description

The large-scale crane hook group

Technical field

The utility model relates to a kind of elevator machinery, especially a kind of suspension hook group of large scale hoisting machinery.

Background technology

Increase along with the marine drilling platform demand, it is more and more busier that the installation and maintenance of drilling platform also becomes, originating firm is for accelerating the installation and maintenance process of drilling platform, shorten the manufacturing cycle, cost-cutting simultaneously is to being installed in the requirement that crane output on the Safe Challenger-SSCV semisubmersible platform proposes to reach 1500t.In order to satisfy the needs that load-carrying ability increases, the suspension hook group in the 1500t crane hook group need adopt the form of four paws suspension hook, and the four paws suspension hook of this dispersion suspension centre can bear bigger load, but has following shortcoming:

1, because the size of four paws suspension hook itself and deadweight are all bigger, if adopt integral form, difficulty is all compared in processing and installation;

2, owing to be wrapped in steel rope on the suspension hook group pulley from two reels independently, the suspension hook group deflection that the deviation of two rope capacities can cause.

Summary of the invention

For solving the problems referred to above that prior art exists, the utility model will design a kind of processing and large-scale crane hook group easy for installation, that can solve suspension hook group imbalance problem simultaneously again.

To achieve these goals, the technical solution of the utility model is as follows: a kind of large-scale crane hook group mainly comprises pulley, sheave shaft, spherangular roller bearing, spherical roller thrust baring, hook nut, anticreep chain, also comprise pulley bracket, hinge I, equalizing bar, hinge II, suspension hook axle, hook top, hook, described sheave shaft has two, pulley is divided into two groups, each group links to each other with a pulley bracket respectively, constitutes two assembly pulleys; Described pulley bracket is connected with equalizing bar by hinge I respectively, and equalizing bar is connected with the suspension hook axle by hinge II, and the bottom of suspension hook axle is connected with hook nut by screw thread, and the top of hook nut is equipped with the spherical roller thrust baring; Described hook is installed in the top of spherical roller thrust baring, between hook and suspension hook axle, spherangular roller bearing is installed, hook top is connected on the hook by the form of welding, described anticreep chain is connected with the suspension hook axle with hook top by the shackle at two ends, is installed between hook and the suspension hook axle.

Two sheave shafts described in the utility model are parallel to each other.

In the middle of the hook described in the utility model mounting hole is arranged, in the mounting hole middle lower portion bearings mounted groove is arranged, hook is installed in the top of spherical roller thrust baring by groove.

Compared with prior art, the utlity model has following beneficial effect:

1, because pulley bracket of the present utility model is connected with equalizing bar by hinge I respectively, just can makes equalizing bar swing to adjust by such pivotally attached connection and change the deflection problem that causes owing to be wrapped in two groups of rope capacities on the assembly pulley around hinge I;

2, because the top of hook nut of the present utility model is equipped with the spherical roller thrust baring, hook is placed on the top of spherical roller thrust baring, hook is freely rotated in the horizontal direction, between hook and suspension hook axle, spherangular roller bearing is installed, not only can bears the effect that horizontal force can also play friction when reducing the hook rotation;

3,, make the processing of large-sized forging suspension hook axle and forging hook and the installation simply easier realization that becomes, thereby be not subjected to the restriction of size because the utility model adopts hook and the mode that the suspension hook axle separates;

4, since the utility model adopted will be bigger the whole suspension hook that is not easy whole processing be divided into suspension hook axle, hook and hook top three parts of processing easily, the measure of recombinant after the separate machined then, reduced processing, cost of installation, made that version is simple, easy for installation, cost is low.

Description of drawings

3 in the total accompanying drawing of the utility model, wherein:

Fig. 1 is the front view of large-scale crane hook group.

Fig. 2 is the A-A cutaway view of large-scale crane hook group.

Fig. 3 is the scheme drawing that the large-scale crane hook group is corrected the rope capacity deviation.

Among the figure: 1, pulley, 2, sheave shaft, 3, pulley bracket, 4, hinge I, 5, equalizing bar, 6, hinge II, 7, the suspension hook axle, 8, the anticreep chain, 9, hook top, 10, spherangular roller bearing, 11, hook, 12, the spherical roller thrust baring, 13, hook nut.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further.As Figure 1-3, a kind of large-scale crane hook group mainly comprises pulley 1, sheave shaft 2, spherangular roller bearing 10, spherical roller thrust baring 12, hook nut 13, anticreep chain 8, also comprise pulley bracket 3, hinge I 4, equalizing bar 5, hinge II 6, suspension hook axle 7, hook top 9, hook 11, described sheave shaft 2 has two, pulley 1 is divided into two groups, each group links to each other with a pulley bracket 3 respectively, constitutes two assembly pulleys; Described pulley bracket 3 is connected with equalizing bar 5 by hinge I 4 respectively, and equalizing bar 5 is connected with suspension hook axle 7 by hinge II 6, and the bottom of suspension hook axle 7 is connected with hook nut 13 by screw thread, and the top of hook nut 13 is equipped with spherical roller thrust baring 12; Described hook 11 is installed in the top of spherical roller thrust baring 12, between hook 11 and suspension hook axle 7, spherangular roller bearing 10 is installed, hook top 9 is connected on the hook 11 by the form of welding, described anticreep chain 8 is connected with suspension hook axle 7 with hook top 9 by the shackle at two ends, is installed between hook 11 and the suspension hook axle 7; Described two sheave shafts 2 are parallel to each other; In the middle of the described hook 11 mounting hole is arranged, in the mounting hole middle lower portion bearings mounted groove is arranged, hook 11 is installed in the top of spherical roller thrust baring 12 by groove.

Claims

1, a kind of large-scale crane hook group, mainly comprise pulley (1), sheave shaft (2), spherangular roller bearing (10), spherical roller thrust baring (12), hook nut (13), anticreep chain (8), it is characterized in that: also comprise pulley bracket (3), hinge I (4), equalizing bar (5), hinge II (6), suspension hook axle (7), hook (11) top (9), hook (11), described sheave shaft (2) has two, pulley (1) is divided into two groups, each group links to each other with a pulley bracket (3) respectively, constitutes two assembly pulleys; Described pulley bracket (3) is connected with equalizing bar (5) by hinge I (4) respectively, equalizing bar (5) is connected with suspension hook axle (7) by hinge II (6), the bottom of suspension hook axle (7) is connected with hook nut (13) by screw thread, and the top of hook nut (13) is equipped with spherical roller thrust baring (12); Described hook (11) is installed in the top of spherical roller thrust baring (12), between hook (11) and suspension hook axle (7), spherangular roller bearing (10) is installed, hook top (9) is connected on the hook (11) by the form of welding, described anticreep chain (8) is connected with suspension hook axle (7) with hook top (9) by the shackle at two ends, is installed between hook (11) and the suspension hook axle (7).

2, large-scale crane hook group according to claim 1 is characterized in that: described two sheave shafts (2) are parallel to each other.

3, large-scale crane hook group according to claim 1, tool is characterised in that: mounting hole is arranged in the middle of the described hook (11), in the mounting hole middle lower portion bearings mounted groove is arranged, hook (11) is installed in the top of spherical roller thrust baring (12) by groove.