CN204897253U - Tower crane's reverse dismantlement structure - Google Patents

Abstract

The utility model discloses a tower crane's reverse dismantlement structure, under the unable normal condition about dismantling of tower crane, locate to set up a leading wheel at the tower crane balance arm apart from body of the tower 3m, set up one two rope lifting hook through the leading wheel, constitute a lifting unit, lifting unit is raised by the master file and draws forth the hoisting rope, through the head sheave to setting up the leading wheel on the small -size special portal that the balance arm was located apart from body of the tower 3m, the hoisting rope is movable pulley of polyphone behind the leading wheel, the anchor of jack -up fag end is setting up on the small -size special portal crossbeam that the balance arm was located apart from body of the tower 3m, thereby utilize and to dismantle the standard festival that gets off from the lifting unit handling of group and reach to ground and fall the tower mesh.

Description

A kind of reverse detaching structure of tower crane

Technical field

The utility model belongs to construction machine equipment technical field, particularly relates to a kind of dismounting implemented by tower crane to tower crane method when cannot normally dismantle.

Background technology

In building operation, due to design modification or arrange inconsiderate cause tower crane to construct after normally cannot dismantle and happen occasionally, just need to take special method once generation, special equipment is selected to carry out high-altitude decomposition to tower crane, this is wasting manpower and material resources not only, duration also can not get ensureing, and easily safety misadventure occurs in unloading process.

Summary of the invention

Technical problem to be solved in the utility model is to provide the reverse disassembly method of tower crane that a kind of time is short, cost is low, efficiency is high.

The utility model is achieved through the following technical solutions: a kind of reverse detaching structure of tower crane, be included in the small, dedicated door frame that balance arm of tower-type crane is arranged, described small, dedicated door frame comprises crossbeam, column, the oblique palm, track adjusting wheel, suspension hook, lifting anchor head, leg and clevis bolt, master winch is comprised from group equilibrium arm hoisting device, flake down drum, flake down drum two ends are equipped with rope blocking plate, wherein rope blocking plate the inner of inner side is provided with connecting panel, connecting panel is provided with mounting hole, steel rope is connected with flake down drum by mounting hole, described track adjusting wheel is installed on the front end of crossbeam, oblique palm end connects with crossbeam, the lower end of the oblique palm is installed on leg, column is installed on the both sides, upper end of leg.

As preferred technical scheme, described crossbeam adopts No. 14 channel-section steels to weld with dismantled balance weight make-up, column adopts No. 14 channel-section steels, oblique palm employing No. 12 channel-section steels, 5t snatch block selected by suspension hook, and lifting anchor head adopts round steel to make, crossbeam is provided with one group, fixed pulley, column is provided with two, and tiltedly the palm is provided with symmetrical two, processes with channel-section steel make-up.

As preferred technical scheme, crane arm 35m place's hanging one is for adjusting the counterweight of crane arm and equilibrium arm balance.

The beneficial effects of the utility model are: the utility model is novel in design, easy to use, be easy to operation, tower crane self power is utilized to dismantle tower crane smoothly, this method is tested through practical application, faster, safer than normal tower crane method for dismounting.Be that the method eliminates dolly counterweight of hanging repeatedly and puts counterweight, balance-seeking soon, hang the standard knot disassembled, then hang the action of counterweight balance-seeking.Safety is that tower crane is in state of equilibrium all the time in the process of dismounting tower crane, smooth operation is without rocking, provide the tower crane method for dismounting that a kind of cost is low, the time is short, efficiency is high, also expanded the dismounting mode of tower crane simultaneously, save nonrecurring cost more than 100 ten thousand yuan, there is very strong practicality, be worthy to be popularized.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the front view of the utility model special small door frame;

Fig. 2 is the lateral plan of the utility model special small door frame;

Fig. 3 is of the present utility model from group hoist mechanism unloading counterweight schematic diagram;

Fig. 4 is adjustment crane arm equilibrium arm equilibrium point schematic diagram of the present utility model;

Fig. 5 is that the hoist mechanism of group certainly of the present utility model hangs osmanthus standard knot schematic diagram;

Fig. 6 of the present utility modelly puts the standard knot schematic diagram disassembled;

1, crossbeam; 2, column; 3, tiltedly slap; 4, track adjusting wheel; 5, suspension hook; 6, anchor head; 7, leg; 8, clevis bolt; 9, master winch; 10, head sheave; 11, small-sized door frame is made by oneself; 12, counterweight; 13, jack; 14, standard knot.

Detailed description of the invention

All features disclosed in this specification sheets, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.

Arbitrary feature disclosed in this specification sheets (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.

One, dead work

As depicted in figs. 1 and 2, make a set of small, dedicated door frame, small, dedicated door frame is made up of crossbeam, column, the tiltedly palm, suspension hook, derrick line anchor head, the balance weight that crossbeam root is dismantled adopts No. 14 channel-section steel make-up welding, column adopts No. 14 channel-section steels, oblique palm employing No. 12 channel-section steels, 5t snatch block selected by suspension hook, and derrick line anchor head can adopt garden steel to do.

Two, fixing small, dedicated door frame

After dead work performs, tower crane derrick line is dismantled, the more special door frame of self-control special small is fastenedly connected with the high strength bolt of 4 cover U-shaped φ 20 and equilibrium arm two major trough steel above outmost counterweight, complete the fixing of first time small-sized door frame.

Three, wear around derrick line

As shown in Figure 3, wear around derrick line, derrick line is drawn by master winch, through head sheave (tower crane first wife) to the track adjusting wheel on self-control small, dedicated door frame, then is worn by track adjusting wheel and is fixed on anchor head around heavy fag end of slinging, composition hoist mechanism.

Four, counterweight is dismantled

Utilize the hoist mechanism from group, hang osmanthus counterweight with very heavy, the every block 3.6t of counterweight, start the action that hoists, counterweight is hung after rising 100mm and stop, after taking out the lock pin of counterweight, transfer counterweight to ground, dismantle 2 pieces of counterweights, object reduces the larger capsizing moment of off working state.

Five, leveling

After dismantling 2 pieces of counterweights, the off working state capsizing moment of tower machine reduces greatly, at this moment again wear by the former derrick line of tower crane and again wear around derrick line around mode, derrick line wear around after hang a joint standard knot, the weight 1000kg of one joint standard knot, make stock perpendicular to tower body by the position of front and back adjustment dolly, complete preliminary leveling, start jacking apparatus by tower head top from tower body 50mm, whether observation locating dowel pin is vertical with knock hole, fine motion dolly adjustment make locating dowel pin and knock hole vertical consistent after, tower head is fallen and fills whole frock pin, with jack, leveling standard knot is fixed on dolly again, dismounting derrick line completes leveling procedure.

Six, small, dedicated door frame is set

The self-control small, dedicated door frame having dismantled counterweight is moved to and adopts 4 to overlap the high strength bolt of U-shaped φ 20 apart from tower body 3000mm place and equilibrium arm two major trough steel and equilibrium arm two major trough steel are fastenedly connected.

Seven, wear around derrick line

As shown in Figure 5, wear around derrick line, derrick line is drawn by master winch, through head sheave (tower crane first wife) to the track adjusting wheel on self-control small, dedicated door frame, then is worn by track adjusting wheel and is fixed on anchor head around suspension hook lifting fag end, reformulate hoist mechanism.

Eight, tower falls

As shown in Figure 6, the whole frock pin of dismounting standard knot, start jacking apparatus at this moment tower crane arm before and after be in state of equilibrium, starting jacking apparatus makes standard knot topmost depart from tower body by tower head jack-up, according to the difference of tower crane model, disconnecting gear is also variant, there is support roller formula and hang osmanthus formula, topmost standard knot is released stock to introducing platform after departing from tower body, decline after two strokes, fill it up with frock pin, at crane arm and tower cap junction, a 2t jack is set, the faller of standard knot near tower body side that osmanthus disassembles is hung with jack, faller outside standard knot that osmanthus disassembles is hung again with the hoist mechanism from group, start after tightening up jack and hook up action, at this moment the standard knot disassembled becomes angle of inclination to leave introduction platform, after loosening jack, standard knot is naturally vertical, transfer standard knot to ground and complete a standard knot unloading process, repeat said procedure until dismantle whole standard knot, reach the object of dismounting tower crane.

Its principal feature is simple to operate, method novelty is unique, use is extensive, widened the method for dismounting of tower crane, through practical application the method than normal disassembly method sooner, more steady, safer, be that the method eliminates dolly counterweight of hanging repeatedly and puts counterweight soon, balance-seeking, hang the standard knot disassembled, then hang the action of counterweight balance-seeking.Safety is that tower crane is in state of equilibrium all the time in the process of dismounting tower crane, smooth operation is without rocking, provide the tower crane method for dismounting that a kind of cost is low, the time is short, efficiency is high, also expanded the dismounting mode of tower crane simultaneously, save nonrecurring cost more than 100 ten thousand yuan, there is very strong practicality, be worthy to be popularized.

The above, be only detailed description of the invention of the present utility model, but protection domain of the present utility model is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.

Claims (3)

1. the reverse detaching structure of a tower crane, it is characterized in that: be included in the small, dedicated door frame that balance arm of tower-type crane is arranged, described small, dedicated door frame comprises crossbeam, column, the oblique palm, track adjusting wheel, suspension hook, lifting anchor head, leg and clevis bolt, master winch is comprised from group equilibrium arm hoisting device, flake down drum, flake down drum two ends are equipped with rope blocking plate, wherein rope blocking plate the inner of inner side is provided with connecting panel, connecting panel is provided with mounting hole, steel rope is connected with flake down drum by mounting hole, described track adjusting wheel is installed on the front end of crossbeam, oblique palm end connects with crossbeam, the lower end of the oblique palm is installed on leg, column is installed on the both sides, upper end of leg.

2. the reverse detaching structure of tower crane according to claim 1, it is characterized in that: described crossbeam adopts No. 14 channel-section steels to weld with dismantled balance weight make-up, column adopts No. 14 channel-section steels, oblique palm employing No. 12 channel-section steels, 5t snatch block selected by suspension hook, and lifting anchor head adopts round steel to make, crossbeam is provided with one group, fixed pulley, column is provided with two, and tiltedly the palm is provided with symmetrical two, processes with channel-section steel make-up.

3. the reverse detaching structure of tower crane according to claim 1, is characterized in that: crane arm 35m place's hanging one is for adjusting the counterweight of crane arm and equilibrium arm balance.