CN202988609U

CN202988609U - Diagonal bracing type derrick crane

Info

Publication number: CN202988609U
Application number: CN 201220572971
Authority: CN
Inventors: 林承场
Original assignee: JINJIANG XIANFENG MACHINERY CO Ltd
Current assignee: JINJIANG XIANFENG MACHINERY CO Ltd
Priority date: 2012-10-31
Filing date: 2012-10-31
Publication date: 2013-06-12
Anticipated expiration: 2022-10-31

Abstract

The utility model provides a diagonal bracing type derrick crane which solves the problems that an existing crane mast is not firm in fixation so as to result in potential safety hazards and the like. The diagonal bracing type derrick crane comprises a hoisting mechanism, a crane boom, a mast, a diagonal draw bar, a lifting hook, a base, a hoisting rope and an inhaul cable. The hoisting mechanism comprises a hoisting winding drum and a hoisting pulley block. One end of the hoisting rope is wound on the hoisting winding drum, and the other end of the hoisting rope is connected with the lifting hook through the hoisting pulley block. The hoisting pulley block comprises a hoisting fixed pulley and a hoisting movable pulley, and the hoisting fixed pulley is installed at the top end of the crane boom. The mast is fixedly arranged on the base. The bottom of the crane boom is installed on the base in a rotating mode, and the top of the crane boom is connected with the mast through the inhaul cable. The top of the diagonal draw bar is installed on the top of the mast in a rotating mode.

Description

A kind of rigid braced derrick crane

Technical field

The utility model relates to hoisting crane, particularly a kind of rigid braced derrick crane.

Background technology

Derrick crane is hard-wired hoisting crane, that derrick crane has is simple in structure, manufacture and design easily, expense is low, easy to assemble, can luffing, the characteristics such as deadweight is little and ability is large.General multiplex, the occasion such as hoisting engineering relatively concentrate, workyard narrower heavier in member of derrick crane is as aspects such as harbour, harbour, mines.Existing mast crane uprightly is fixed on ground by single mast, and weight capacity is poor, mast is fixing not firm, easily produces the problems such as potential safety hazard.

The utility model content

The utility model proposes a kind of rigid braced derrick crane, solved the problems such as the fixing not firm generation potential safety hazard of existing crane mast.

The technical solution of the utility model is achieved in that

A kind of rigid braced derrick crane comprises lifting mechanism, crane arm, mast, suspension hook, base and drag-line; Described lifting mechanism comprises hoisting drum, lifting pulley group and raising line, described raising line one end is wound on described hoisting drum, the other end is connected in described suspension hook by described lifting pulley group, described lifting pulley group comprises hoist fixed pulley and the movable pulley that hoists, and the described fixed pulley that hoists is installed on the top of described crane arm; Described mast is fixed on described base, and described crane arm bottom is rotated and is installed on described base, and described crane arm top is connected with described mast by described drag-line; Also comprise digonal link, the top that is installed on described mast is rotated at the top of described digonal link.

Further, also comprise back and lead mechanism, lead mechanism for described go back to and comprise back lead, leading sheave and return and lead reel, an end of described time lead is connected with described lifting pulley group by leading sheave, and the other end of described time lead is wound in described time and leads on reel.

Further, described digonal link comprises two, and between described two digonal links, angle is 90 degree.

Further, also comprise load lifting limiter, described load lifting limiter is installed on described mast and described hoisting between movable pulley.

Further, also comprise height limiter, described height limiter is installed on the described fixed pulley that hoists.

Further, also comprise angle limiter, described angle limiter is installed on the described fixed pulley that hoists.

Further, a side of described mast is welded with several handrails that is used for climbing.

By above description as can be known, the utility model the utlity model has following advantage compared with prior art:

One, the maximum of this mast crane lifting degree of depth can reach 200m, can be suitable for the occasions such as mine, deep-well.

Two, this mast crane is provided with back and leads mechanism, and when slinging weight, by returning the lead weight of pulling back, when avoiding lifting by crane, the weight shaking amplitude is excessive; Simultaneously can realize pull and hang sideling, increase the operating range of hoisting crane, by angle limiter is set, when the pull and hang sideling angle was spent over 30, automatic alarm improved safety performance.

Three, support mast by digonal link, make mast more firm, improve the mast weight capacity, improve safety performance.

Four, by the lifting weight limitor is set, avoid the weight of weight over the safety value of hoisting crane.By height limiter is set, when sling height surpasses the safety value automatic alarm, improve safety performance.

Five, a side of mast is welded with the handrail of climbing, maintains easily and overhauls.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the utility model structural representation.

Fig. 2 is plan structure schematic diagram of the present utility model.

Fig. 3 is the partial enlarged drawing at a place in Fig. 1.

Fig. 4 is the partial enlarged drawing at b place in Fig. 1.

The specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.

With reference to Fig. 1, Fig. 2, a kind of rigid braced derrick crane comprises lifting mechanism, returns and lead mechanism, crane arm 3, mast 4, digonal link 5, suspension hook 6, base 7, drag-line 8 and lifting limiter 91, height limiter 92, angle limiter 93; Described lifting mechanism comprises hoisting drum 11 and lifting pulley group 12, raising line 13, described raising line 13 1 ends are wound on described hoisting drum 11, the other end is connected in described suspension hook 6 by described lifting pulley group 12, described lifting pulley group 12 comprises hoist fixed pulley 121 and the movable pulley 122 that hoists, and the described fixed pulley 121 that hoists is installed on the top of described crane arm 3; One side of described mast 4 is welded with several handrails 41 that is used for climbing.

With reference to Fig. 1, Fig. 2, described base 7 can be fixed in advance on the casting reinforced concrete structure; Described crane arm 3 bottoms are rotated and are installed on described base 7; The top of described mast 4 is provided with for the connection bearing pin 42 that drag-line 8 is installed, and described crane arm 3 tops are connected in by described drag-line 8 on the connection bearing pin 42 on described mast 4 tops, are protection drag-line 8, and described bearing pin 42 is outer is furnished with roller 44.

With reference to Fig. 1, Fig. 2, the top that is installed on described mast 4 is rotated at the top of described digonal link 5, and described digonal link 5 comprises two, and between described two digonal links, angle is 90 degree.

With reference to Fig. 1, Fig. 2; leading mechanism for described go back to comprises back lead 23, leading sheave 22 and returns and lead reel 21; one end of described time lead 23 is connected with described lifting pulley group 12 by leading sheave 22, and the other end of described time lead 23 is wound in described time and leads on reel 21.Described load lifting limiter 9 is installed on described mast 4 and described hoisting between movable pulley 122; Described height limiter 92 is installed on respectively on the described fixed pulley that hoists with described angle limiter 93.

With reference to Fig. 2, described lifting mechanism also comprises diesel engine 14, universal coupling 15, diff 16, change-speed box 171,172, retarder 181,182 and drg 191,192, described diesel engine 14 is high speed diesel engine, be connected with power-transfer clutch 141 on described diesel engine 14, the power of described diesel engine 14 imports change-speed box 171,172 into by the output shaft of described diff 16, and described change-speed box comprises the change-speed box 171 and be connected in and lead returning of mechanism described time and lead change-speed box 172 of hoisting that is connected in described lifting mechanism; Described retarder comprises speed reducer used in hoisting 181 and returns and lead retarder 182; Described drg 191,192 is controlled by mechanical lever; Described drg comprises hoist brake 191 and returns and lead drg 192; The input shaft of described speed reducer used in hoisting 181 is connected in by described hoist brake 191 on the output shaft of the described change-speed box 171 that hoists, and the output shaft of described speed reducer used in hoisting 181 is connected with described hoisting drum 11, and drives hoisting drum 11 rotations.The input shaft that leads retarder 182 for described time is connected on the output shaft that leads change-speed box 172 for described time by leading drg 192 for described time, the output shaft that leads retarder 182 for described time with lead reel 21 described time and be connected, and drive back and lead reel 21 and rotate.

Compared to the prior art, the utlity model has following advantage:

The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. a rigid braced derrick crane, comprise lifting mechanism, crane arm, mast, suspension hook, base and drag-line;

Described lifting mechanism comprises hoisting drum, lifting pulley group and raising line, described raising line one end is wound on described hoisting drum, the other end is connected in described suspension hook by described lifting pulley group, described lifting pulley group comprises hoist fixed pulley and the movable pulley that hoists, and the described fixed pulley that hoists is installed on the top of described crane arm;

Described mast is fixed on described base, and described crane arm bottom is rotated and is installed on described base, and described crane arm top is connected with described mast by described drag-line;

It is characterized in that: also comprise digonal link, the top that is installed on described mast is rotated at the top of described digonal link.

2. a kind of rigid braced derrick crane as claimed in claim 1; it is characterized in that: also comprise back and lead mechanism; leading mechanism for described go back to comprises back lead, leading sheave and returns and lead reel; one end of described time lead is connected with described lifting pulley group by leading sheave, and the other end of described time lead is wound in described time and leads on reel.

3. a kind of rigid braced derrick crane as claimed in claim 1, it is characterized in that: described digonal link comprises two, and between described two digonal links, angle is 90 degree.

4. a kind of rigid braced derrick crane as claimed in claim 1 or 2, it is characterized in that: also comprise load lifting limiter, described load lifting limiter is installed on described mast and described hoisting between movable pulley.

5. a kind of cable type mast crane as claimed in claim 1 or 2, it is characterized in that: also comprise height limiter, described height limiter is installed on the described fixed pulley that hoists.

6. a kind of cable type mast crane as claimed in claim 1 or 2, it is characterized in that: also comprise angle limiter, described angle limiter is installed on the described fixed pulley that hoists.

7. a kind of rigid braced derrick crane as claimed in claim 1 or 2 is characterized in that: a side of described mast is welded with several and is used for the handrail climbed.