CN2057658U

CN2057658U - Self-lifting type crane

Info

Publication number: CN2057658U
Application number: CN 89211540
Authority: CN
Inventors: 孙在鲁; 黄信芝
Original assignee: Changsha Building Machinery Institute Of Ministry Of Urban & Rural Construction
Current assignee: Changsha Building Machinery Institute Of Ministry Of Urban & Rural Construction
Priority date: 1989-10-12
Filing date: 1989-10-12
Publication date: 1990-05-30

Abstract

The utility model relates to a self-lifting type crane which relates to the technical field of the construction work. The utility model is characterized in that a standard section is provided with a slot-type rail; a derrick mast body is provided with a rolling wheel and a pair of hooks with automatic turnover; the rolling wheel can do the upper-to-lower movement in the slot-type rail, and the hooks can cause the derrick mast body and the standard section to connect into a whole; a balance arm, a revolving body and a lazy arm are arranged on a slewing ring on the top of the derrick mast body. Then the whole device accomplishes rising and revolving freely, and the utility model is suitable for the construction of the medium and the low layer civil architecture.

Description

Self-lifting type crane

The utility model is a kind of whip-and-derry that can rely on self hoisting mechanism to finish to add standard knot and promote hoisting device.Relate to building engineering field.

Existing hoisting crane, its hoisting device is two covering devices that separate with jacking apparatus, thereby cost is higher.

The utility model is to provide a kind of as long as a cover lifting mechanism can be realized the jack up gin pole hoisting crane from liter and two kinds of functions of lifting simultaneously.

Existing accompanying drawings is as follows:

Fig. 1 is a jack up gin pole hoisting crane scheme drawing.

Underframe (1) be contained in can four supporting legs (15) of leveling on, lifting mechanism (2) and standard knot (3) are contained on the underframe (1), standard knot (3) is upper with channled rail, taking off the body of rod (4) moves up and down along channled rail by means of roller (14), simultaneously, tower hook (13) by means of can the one direction automatic turning can be stuck on the suitable height of standard knot (3) taking off the body of rod (4). Pivoting support (5) is housed taking off the body of rod (4) top, counter-jib on it (6), revolving body (7) and arm (10) can be around taking off the revolution of the body of rod (4) axis by means of the hand traction rope, dolly (11) and suspension hook (12) also can be mobile at arm (10) by means of the hand traction rope, realize luffing, rising along with building, can utilize gin pole at any time to increase standard knot, to improve lifting altitude. Increase behind certain altitude, can also utilize attaching frame (16) to increase and adhere to fulcrum, thereby satisfy the instructions for use of higher level building.

Wiring scheme drawing when Fig. 2 is raising legs.Steel rope is drawn from the reel of lifting mechanism (2), through being contained in the fixed pulley (17) on the underframe (1), enter into the derrick block (18) that hangs on the standard knot (3), walk around downwards and be contained in the pulley (19) of taking off the body of rod (4) root, introduce top pulleys (20), pass little pulley sheave (21) and lifting hook pulley (22) again, be consolidated in the end of arm (10) at last.When raising legs, suspension hook (12) hung over take off on the body of rod (4), start hoisting drum, drive gin pole by pulley (19) and rise.After finishing lifting, take out the bearing pin of derrick block (18), unreeve makes it directly introduce pulley (19) by pulley (17), takes off suspension hook (12) gin pole and just enters the lifting operation state from taking off the body of rod (4) simultaneously.

Fig. 3 is tower hook (a 13) work scheme drawing.When raising legs, run into the horizontal web member of standard knot (3) when having contact with (13), the left side is by pressure and anticlockwise direction rotation is taken off the body of rod (4) and can be risen unimpededly.Cross horizontal web member in case have contact with (13), because the right is heavy, has contact with and can get back to level attitude automatically, at this moment makes and take off the body of rod (4) and descend slightly, have contact with (13) and will hook the horizontal web member of standard knot (3), make and take off the body of rod (4) and standard knot (3) and connect to one and carry out work.

In the time will increasing standard knot, as long as the standard knot that utilizes gin pole to sling and will add is added on the upright good standard knot, fix with tie bolt, just can with putting up to have contact with by the above-mentioned steps raising legs again.

The utility model has been realized rising certainly in very simple mode and the combination of lifting function, has both improved lifting altitude, has made things convenient for the mounting or dismounting of standard knot again, thereby can reduce equipment investment and saving erected cost greatly.Be specially adapted to numerous middle low layer civil construction construction.

Claims

1, a kind of jack up gin pole hoisting crane comprises underframe [1], lifting mechanism [2], standard knot [3] and gin pole etc.It is characterized in that having a gin pole, comprise pivoting support [5], gyro-rotor [7], jib [10], dolly [11] and suspension hook [12] with revolution and luffing device; Standard knot [3] is equipped with channled rail; Take off roller [14] is housed on the body of rod [4].

2, by the described jack up gin pole of claim 1 hoisting crane, it is characterized in that taking off be equipped with on the body of rod (4) a pair of can overturn automatically have contact with (13).

3, by the described hoisting crane of claim 1, it is characterized in that hanging with on the standard knot (3) an easy-to-dismount derrick block of bearing pin (18).