CN105621280B - The apparatus and method for mounting and dismounting crane arm - Google Patents
The apparatus and method for mounting and dismounting crane arm Download PDFInfo
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- CN105621280B CN105621280B CN201610181167.1A CN201610181167A CN105621280B CN 105621280 B CN105621280 B CN 105621280B CN 201610181167 A CN201610181167 A CN 201610181167A CN 105621280 B CN105621280 B CN 105621280B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
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- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention discloses a kind of apparatus and method for mounting and dismounting crane arm, including main device for carrying a tripot bar, horizontal girder steel, longitudinal girder steel, amplitude variation trolley, gin-pole truck, running block, variable-amplitude steel wire rope and hoist rope, gin-pole truck is fixed on gin-pole truck pedestal, horizontal girder steel, longitudinal girder steel and main device for carrying a tripot bar lower end enclose a semiclosed rectangular area jointly, amplitude variation trolley is clamped in the semiclosed rectangular area, variable-amplitude steel wire rope is connected with chain block, and one end is fixed on gin-pole truck, the other end is fixed on main device for carrying a tripot bar, hoist rope one end is fixed on main device for carrying a tripot bar, the other end is fixed on after passing through running block on gin-pole truck.The present invention mounts and dismounts crane arm, takes full advantage of space and the advantage of itself, can crane arm disposably be hung tower crane connection, installation and removal are simple in structure, and easily operated, feasibility is strong using amplitude variation trolley collocation gin-pole truck and running block.
Description
Technical field
The present invention relates to hoisting machinery technical field of construction more particularly to a kind of utilization amplitude variation trolley to mount and dismount lifting
The apparatus and method of arm.
Background technology
As socialist construction paces are accelerated, high-rise, high-rise building using tower crane and when tower crane positions
Existing mistake and the building overhanging more and more derrick cranes of reason can not be dismantled normally, and number big absolutely needs midair disintegration
Tower crane crane arm stretches out tens meters of building edge, general that detaching equipment is aided in crane arm disposably not to be hung tower crane connection
Roofing layer is placed in success, and such operating efficiency is low, and human cost is big.
The content of the invention
For shortcoming present in above-mentioned technology, present invention offer is a kind of have been mounted and dismounted using amplitude variation trolley
The apparatus and method of weighing arm.
To achieve the above object, the present invention provides a kind of device for mounting and dismounting crane arm, including main device for carrying a tripot bar, horizontal steel
Beam, longitudinal girder steel, amplitude variation trolley, gin-pole truck, running block, variable-amplitude steel wire rope and hoist rope, the longitudinal direction girder steel pass through
Pinch roller and hook wheel mode vertical direction are fixed on main device for carrying a tripot bar, and the transverse direction girder steel is horizontal positioned and parallel with main device for carrying a tripot bar lower end,
One end of the transverse direction girder steel is fixedly connected with longitudinal girder steel screw, and the other end is equipped with gin-pole truck pedestal, and the gin-pole truck is fixed
On gin-pole truck pedestal, the gin-pole truck pedestal rear is welded with anti-squat system, the transverse direction girder steel, longitudinal girder steel and main device for carrying a tripot
Bar lower end encloses a semiclosed rectangular area jointly, and the amplitude variation trolley is fixedly connected by U-bolt with horizontal girder steel,
And be contained in the semiclosed rectangular area, the variable-amplitude steel wire rope is connected with chain block, and one end is fixed on gin-pole truck,
The other end is fixed on main device for carrying a tripot bar, and described hoist rope one end is fixed on main device for carrying a tripot bar, and the other end is consolidated after passing through running block
It is scheduled on gin-pole truck.
Wherein, the length of the horizontal girder steel is 2.5 double-lengths of used amplitude variation trolley.
Wherein, the running block includes being fixed on the first pulley of main device for carrying a tripot bar upper end, is arranged on " people " font gin-pole truck
The second pulley of end and the 3rd pulley being connected with suspension hook, the first pulley, second pulley be fixed pulley, the described 3rd
Pulley is movable pulley, and described hoist rope one end is fixed on main device for carrying a tripot bar, the other end sequentially pass through first pulley, second pulley and
" people " font gin-pole truck end is fixed on after 3rd pulley.
Wherein, amplitude variation trolley there are two being set on the main device for carrying a tripot bar, respectively the first amplitude variation trolley and the second amplitude variation trolley, institute
It states and the first horizontal girder steel is fixed on the first amplitude variation trolley, the described first horizontal girder steel is fixedly connected with first longitudinal direction girder steel, institute
It states and the second horizontal girder steel is fixed on the second amplitude variation trolley, the described second horizontal girder steel is fixedly connected with second longitudinal direction girder steel, institute
The first amplitude variation trolley is stated to be synchronized with the movement with the second amplitude variation trolley.
Wherein, the both ends of the gin-pole truck are fixed on the first gin-pole truck pedestal on the first horizontal girder steel by axis pin respectively
On the second gin-pole truck pedestal on the second horizontal girder steel.
Wherein, be additionally provided in the semiclosed rectangular area it is anti-after sliding device, it is described it is anti-after sliding device pass through high-strength bolt
It is fixed on main device for carrying a tripot bar lower end.
Wherein, the horizontal girder steel and longitudinal girder steel are made by square logical or H profile steel.
The present invention also provides a kind of methods for mounting and dismounting crane arm, comprise the following steps：
S1, front end crane arm weight, the actual height of the main device for carrying a tripot bar in tower crane amplitude variation trolley both sides are first determined according to tower crane model
Size by calculating relevant parameter, is led to by side or H profile steel makes horizontal girder steel and longitudinal girder steel；
S2, gin-pole truck pedestal is set in one end of horizontal girder steel, the other end vertically connects longitudinal girder steel with bolt, using pressure
Longitudinal girder steel is fixed on main device for carrying a tripot bar lower end by wheel and hook wheel mode, and horizontal girder steel is parallel with main device for carrying a tripot bar lower end, the transverse direction girder steel,
Longitudinal girder steel and main device for carrying a tripot bar lower end enclose a semiclosed rectangular area jointly, and amplitude variation trolley is contained in the semiclosed square
In shape region, and amplitude variation trolley is fixed with horizontal girder steel by U-bolt, and amplitude variation trolley moves forward and backward, so as to drive horizontal steel
Beam moves forward and backward under the action of pinch roller and hook wheel；
S3, installation gin-pole truck, coordinate variable-amplitude steel wire rope to be connected to gin-pole truck end and main device for carrying a tripot bar with a 5T chain block
Upper end, not less than 5 meters, 5T chain blocks control the luffing distance of gin-pole truck for distance；Two are bolted in gin-pole truck end position
Variable-amplitude steel wire rope is toggled in longitudinal girder steel upper end, it is rear fasten the variable-amplitude steel wire rope when moving and move gin-pole truck to maximum /V fix,
When amplitude variation trolley reaches removed position, amplitude variation trolley rear high-strength bolt to one an angle of 90 degrees of folder it is anti-after sliding device,
Fixed amplitude variation trolley；
S4, first pulley is fixed in main device for carrying a tripot bar upper end, in " people " font gin-pole truck end set second pulley, by raising steel
Cord one end is fixed on main device for carrying a tripot bar, and the other end is each passed through first pulley, second pulley and the 3rd pulley being connected with suspension hook
Afterwards, it is fixed on the end of gin-pole truck；By hoist rope from first pulley lower end through again by second pulley downwards around to
Then 3rd pulley is fixed in gin-pole truck end, form a running block, need to dismantle crane arm and be toggled with hoist rope
In first pulley, hoist rope is tensed, 5T chain blocks through second pulley front and back position, reach removed position in the air；
After S5, one section crane arm of dismounting, suspension hook and crane arm are departed from, gin-pole truck is moved to 105 degree of angles, by two luffings
Steel wire rope is tensed on longitudinal girder steel, and in one 3T chain block of amplitude variation trolley front suspension, sky is controlled by 3T chain blocks
The speed that middle amplitude variation trolley moves backward when 3T chain block iron chains length is inadequate, is fixed in amplitude variation trolley rear roller position
Sliding device after anti-converts 3T chain blocks position with this, it is ensured that amplitude variation trolley normally arrives safe and sound destination.
Wherein, the length of the horizontal girder steel is 2.5 double-lengths of used amplitude variation trolley.
Wherein, the gin-pole truck pedestal rear is welded with anti-squat system.
The beneficial effects of the invention are as follows：Compared with prior art, the present invention installs crane arm using amplitude variation trolley
And dismounting, space and the advantage of itself are taken full advantage of, can crane arm disposably be hung into tower crane connection, and successfully place room
Surface layer significantly reduces human cost and work efficiency.
Description of the drawings
Fig. 1 is the schematic diagram under the working state of device of the installation and removal crane arm of the present invention；
Fig. 2 is the structure diagram under the device fallback state of present invention installation and removal crane arm；
Fig. 3 is the gin-pole truck mounting structure schematic diagram of the device of present invention installation and removal crane arm；
Fig. 4 is amplitude variation trolley working state schematic representation in the device of the invention for mounting and dismounting crane arm；
Fig. 5 is gin-pole truck structure diagram in the device of the invention for mounting and dismounting crane arm.
Main element symbol description is as follows：
1st, main device for carrying a tripot bar 2, horizontal girder steel
3rd, longitudinal girder steel 4, amplitude variation trolley
5th, gin-pole truck 6, running block
7th, variable-amplitude steel wire rope 8, hoist rope
9th, chain block 11, it is anti-after sliding device
21st, gin-pole truck pedestal 22, anti-squat system
31st, pinch roller 32, hook wheel
61st, first pulley 62, second pulley
63rd, the 3rd pulley 91,5T chain blocks
92nd, 3T chain blocks 631, suspension hook.
Specific embodiment
In order to more clearly state the present invention, the present invention is further described below in conjunction with the accompanying drawings.
- Fig. 2 is please referred to Fig.1, the present invention provides a kind of device for mounting and dismounting crane arm, including main device for carrying a tripot bar 1, horizontal steel
Beam 2, longitudinal girder steel 3, amplitude variation trolley 4, gin-pole truck 5, running block 6, variable-amplitude steel wire rope 7 and hoist rope 8, longitudinal girder steel 3
Pinch roller 31 and hook wheel 32 by way of vertical direction be fixed on main device for carrying a tripot bar 1, horizontal girder steel 2 is horizontal positioned, and with main device for carrying a tripot bar 1
Lower end is parallel, and one end of horizontal girder steel 2 is fixed by screws with longitudinal girder steel 3, and the other end is welded with gin-pole truck pedestal 21,
For fixing gin-pole truck 5, gin-pole truck integrally can be integrally formed, can also be combined by two gin-pole trucks 5 in " V " font, shape
It forms, 21 rear of gin-pole truck pedestal is welded with anti-squat system 22, prevention 5 luffing of gin-pole truck to hypsokinesis caused by during maximum angle
Turn over phenomenon；Horizontal girder steel 2, longitudinal girder steel 3 and main 1 lower end of device for carrying a tripot bar enclose a semiclosed rectangular area, amplitude variation trolley 4 jointly
Be clamped in the semiclosed rectangular area, and be additionally provided in semiclosed rectangular area it is anti-after sliding device 11, sliding device 11 after preventing
Main 1 lower end of device for carrying a tripot bar is fixed on by high-strength bolt；Variable-amplitude steel wire rope 7 is connected with chain block 9, and one end is fixed on gin-pole truck 5
On, the other end is fixed on main device for carrying a tripot bar 1, and 8 one end of hoist rope is fixed on main device for carrying a tripot bar 1, after the other end passes through running block 6
It is fixed on gin-pole truck 5.
Compared with prior art, the present invention carries out crane arm using amplitude variation trolley collocation gin-pole truck and running block
Installation and removal, take full advantage of space and the advantage of itself, can crane arm disposably be hung tower crane connection, and into power amplifier
Roofing layer is put, greatly reduces the influence that around skyscraper carrys out crane arm belt removal, installation and removal are simple in structure, are easy to
Operation, feasibility are strong.
In the present embodiment, the length of horizontal girder steel 2 is 2.5 double-lengths of used amplitude variation trolley 4, this length is not
Fixed value, but according to the model of tower crane, the actual height size of the main device for carrying a tripot bar in 4 both sides of amplitude variation trolley, it is different by being calculated
Tower crane model and main device for carrying a tripot bar height, length it is different, and horizontal girder steel 2 and longitudinal girder steel 3 pass through that side is logical or H profile steel makes
It forms.
In the present embodiment, running block 6 includes being fixed on the first pulley 61 of main 1 upper end of device for carrying a tripot bar, is arranged on " people " word
The second pulley 62 of 5 end of type gin-pole truck and the 3rd pulley 63 being connected with suspension hook 631, first pulley 61 and second pulley 62
For fixed pulley, the 3rd pulley 63 is movable pulley, and three pulleys cooperate, and can mechanical arm effortlessly be passed through very much suspension hook 631
It is transported.
In the present embodiment, there are two types of chain block 9 is set, one kind is 5T chain blocks, and another kind is 3T chain blocks, is pacified
It fills gin-pole truck 5 and uses 5T chain blocks, dismounting gin-pole truck 5 uses 3T chain blocks, when installing gin-pole truck 5, with a 5T hand
Cucurbit cooperation variable-amplitude steel wire rope 7 is drawn to be connected to 5 end of gin-pole truck and main 1 upper end of device for carrying a tripot bar of crane arm, is controlled by 5T chain blocks
The luffing distance of gin-pole truck 5 processed；After a section crane arm is dismantled, suspension hook 631 and crane arm are departed from, move gin-pole truck 5 to 105
Angle is spent, the variable-amplitude steel wire rope 7 of two /Vs is fastened on longitudinal girder steel 3, in one 3T hand of amplitude variation trolley front suspension
Draw cucurbit, the speed moved backward by 3T chain blocks Lai aerial amplitude variation trolley.
The present invention also provides a kind of methods for mounting and dismounting crane arm, comprise the following steps：
S1, front end crane arm weight, the actual height of the main device for carrying a tripot bar in tower crane amplitude variation trolley both sides are first determined according to tower crane model
Size by calculating relevant parameter, is led to by side or H profile steel is fabricated to horizontal girder steel 2 and longitudinal girder steel 3；
S2, gin-pole truck pedestal 21 is set in one end of horizontal girder steel 2, the other end vertically connects longitudinal girder steel 3 with bolt, adopts
Longitudinal girder steel 3 is fixed on main 1 lower end of device for carrying a tripot bar with pinch roller 31 and hook 32 modes of wheel, horizontal girder steel 2 under main device for carrying a tripot bar 1 with holding level with both hands
Row, horizontal girder steel 2, longitudinal girder steel 3 and main 1 lower end of device for carrying a tripot bar enclose a semiclosed rectangular area, amplitude variation trolley 4 are held jointly
It puts in semiclosed rectangular area；
S3, installation gin-pole truck, coordinate variable-amplitude steel wire rope 7 to be connected to 5 end of gin-pole truck and master with a 5T chain block 91
1 upper end of device for carrying a tripot bar, not less than 5 meters, 5T chain blocks 91 control the luffing distance of gin-pole truck 5 for distance；In 5 end position of gin-pole truck
The variable-amplitude steel wire rope 7 of two a diameter of 12mm of bolt is toggled in longitudinal 3 upper end of girder steel, and the variable-amplitude steel wire rope 7 is fastened when moving afterwards will
Gin-pole truck is moved maximum /V to and is fixed, when amplitude variation trolley 4 reaches removed position, in 4 rear high-strength bolt pair of amplitude variation trolley
One an angle of 90 degrees of folder it is anti-after sliding device 11, fixed amplitude variation trolley 4；
S4, first pulley 61 is fixed in main 1 upper end of device for carrying a tripot bar, it, will in " people " font gin-pole truck end set second pulley 62
8 one end of hoist rope is fixed on main device for carrying a tripot bar, the other end be each passed through first pulley 61, second pulley 62 and with suspension hook 631
After 3rd pulley 63 of connection, the end of gin-pole truck 5 is fixed on；Hoist rope 8 from 61 lower end of first pulley is passed through and is led to again
Second pulley 62 is crossed downwards around to the 3rd pulley 63, is then fixed in 5 end of gin-pole truck, one running block 6 of formation need to
Dismounting crane arm hoist rope 8 is toggled in first pulley 61, tenses hoist rope 8, and 5T chain blocks 91 pass through in the air
62 front and back position of second pulley reaches removed position；
After S5, one section crane arm of dismounting, suspension hook 631 and crane arm are departed from, gin-pole truck 5 is moved to 105 degree of angles, by two
The variable-amplitude steel wire rope 7 being arranged in parallel is tensed on longitudinal girder steel 3, in amplitude variation trolley 4 front suspension, one 3T chain block 92, by
3T chain blocks 92 control the speed that aerial amplitude variation trolley 4 moves backward, when 92 iron chains length of 3T chain blocks is inadequate,
Sliding device 11, changes 92 position of chain block, it is ensured that amplitude variation trolley 4 with this to become 3T after the fixation of 4 rear roller position of amplitude variation trolley is anti-
Normal destination of arriving safe and sound.
In the present embodiment, the length of horizontal girder steel 2 is 2.5 double-lengths of used amplitude variation trolley 4, this length is not
Fixed value, but according to the model of tower crane, the actual height size of the main device for carrying a tripot bar in 4 both sides of amplitude variation trolley, it is different by being calculated
Tower crane model and main device for carrying a tripot bar height, length it is different.
31 rear of gin-pole truck pedestal is welded with anti-squat system 22 in this embodiment, can be pre- well by the device
Anti- 5 luffing of gin-pole truck is to tipping backwards phenomenon caused by during maximum angle.
It is further described with reference to a concrete operations, refers to Fig. 3-Fig. 4, in the present embodiment, using SCM-C7030 tower cranes
Lifting 12T roofings are hung, and are being checked each mechanism and electrical equipment comprehensively, are being made each system normal, are risen and are pulled arm, carry out each portion's action examination
It tests, is used after qualified.
First with tower crane, tower crane is down to from roofing extreme lower position by interior system of climbing in itself before Tower crane disassembly, in frame position of climbing
Tower crane is fixed, and mobile roof hangs revolution, and slinging weighing arm using roofing hangs counterweight, stays one piece with recast balanced action.
Main device for carrying a tripot bar 1 is saved in crane arm leading portion second, two " people " font gin-pole trucks are installed, with toppling for 5T chain blocks control gin-pole truck
Achieve the effect that control 631 central point of suspension hook with this.Final section crane arm is hung by the use of hoist rope 8 as traction power
Stress is played, crane arm connection axis pin is then destroyed, 5T chain blocks is unclamped into distance element slightly, make final section crane arm with falling
Number second, which saves crane arm, distance, then starts main hoisting mechanism, crane arm is hung to ground, removed down successively using the method
It is hung after Section of three crane arm of number using roofing and 15 degree of angles is lifted by crane into 50 meters of crane arm front ends of tower crane, bend front tension bar, it is small with 6T
Roofing is hung remove tower crane front tension bar after slowly unclamp 12T roofings and hang main hook, 40-50 meters are released in the case where not changing former suspension centre
Between crane arm, the crane arm under removing directly is hung to ground, then is hung with 12T roofings 40 meters of large arm being disposably hung to roofing,
Then ground is hung to after being decomposed into 5 meters, 10 meters.
The installation 50*50*6mm*22000 transverse directions girder steel 2 in 4 upper end of amplitude variation trolley, with 16*8.8 grades of U-bolts of Φ and luffing
Trolley 4 is rigidly connected, the welding gin-pole truck pedestal 21 in horizontal 2 front end of girder steel, by the making of Φ 80*10*6000mm seamless steel pipes
Into gin-pole truck using axis pin connection be mounted on gin-pole truck pedestal 21 on, horizontal 2 rear portion of girder steel using pinch roller 31 and hook wheel 32
The main device for carrying a tripot bar 1 of column is hooked, in the present embodiment, there are two amplitude variation trolleys 4, is respectively the first amplitude variation trolley 41 and the second amplitude variation trolley
42, the first amplitude variation trolley 41 and the second amplitude variation trolley 42 are respectively at main 1 left and right ends of device for carrying a tripot bar, the both ends of " people " font gin-pole truck 5
Axis pin is respectively adopted to be fixed on the first gin-pole truck pedestal 211 and the second gin-pole truck pedestal 212,211 He of the first gin-pole truck pedestal
It is fixedly connected between second gin-pole truck pedestal 212 with girder steel, to increase stress, prevents from deforming, the first transverse direction girder steel 2A passes through height
Strength bolt is fixed on the first amplitude variation trolley 41, and is connected with first longitudinal direction girder steel 3A, and the second transverse direction girder steel 2B passes through high-strength spiral shell
Bolt is fixed on the second amplitude variation trolley 42, and is connected with second longitudinal direction girder steel 3B, first longitudinal direction girder steel 3A lower ends and second longitudinal direction
The lower end connection of girder steel 3B is fixed, and to prevent stress when deforms.
In the present embodiment, 5 end of gin-pole truck is connected with Φ 13mm raisings hoist rope 8, gin-pole truck 5 is drawn to 75
The other end of raising hoist rope 8 is simultaneously fixed on main device for carrying a tripot bar by degree angle, it is ensured that gin-pole truck 5 is consolidated when sliding backward.
In the present embodiment, with one end 5 end of connection gin-pole truck of variable-amplitude steel wire rope 7, the other end is separately fixed at first longitudinal direction girder steel 3A
With second longitudinal direction girder steel 3B upper ends, 7 front end of variable-amplitude steel wire rope, one interim 3T chain blocks 92 are fixed, steel wire rope head is fastened to exist admittedly
On amplitude variation trolley 4, amplitude variation trolley 4 is slowly successively slided to stopping at 1.5 meters behind next section crane arm tie point, with fastening spiral shell
Bolt be combined into it is anti-after sliding device, amplitude variation trolley 4 is fixed on crane arm, after amplitude variation trolley 4 and horizontal girder steel 3 are fixed,
Lifting rope is put on, the steel wire rope for slowly unclamping after centre distance and being used during shifting after amplitude variation trolley 4 is determined, starts to remove lifting
Arm removes a few section crane arms of front end, until front tension bar position with this in this manner.
In the present embodiment, " people " font gin-pole truck 5 uses Φ to be made for the seamless steel pipe of 80x12, and material Q235 is single
Root long degree is 8 meters, and span is 1.3 meters during installation or so, and maximum lift heavy is 1.3T, and luffing uses chain block luffing.
It is toppled amplitude according to actual conditions, calculates gin pole list limb stress.It is the most unfavorable processing condition during because of amplitude peak, so pressing
It is calculated according to the most unfavorable processing condition, gin pole own wt very little and for convenience calculating event are without considering gin pole own wt.Choosing
With two multiplying power hoist ropes, single pulling force is 0.65T, and single gin pole stress is：Single limb=1.26T=12.6KN
Bar strength checking
| Steel pipe specification (mm) | Φ80x12 | Area of section A (mm2) | 2563.54 |
| Radius of gyration i (mm) | 24.413 | Strength failure criterion [f] (N/mm2) | 215 |
1st, rod piece axial tension strength checking
σ=N/A=12600/2563.54=4.9N/mm2≤[f]=215N/mm2
2nd, rod piece axial compression strength checking
Bar slenderness ratio：
λ 1=L0/i=(a12+b12) 0.5/i=(1200)/24.413=49.15≤[λ]=15, look into specification sheet and obtain：1
=0.858
The axial compression coefficient of stability：
More than relevant parameter is satisfied by the requirement of general building operating instruction！
In the present embodiment, the 40m crane arms that tower crane heaviest piece is tower crane, (the crane arm weight when lifting by crane crane arm are installed
8780kg), when 12T roofings are hung in 75 degree of the elevation angle, during 9 meters of the radius of clean-up, rated load 11400kg, lifting altitude 25m.Therefore
12T roofings hang to aid in this tower crane installation task.
Advantage of the invention is that：
1) present invention mounts and dismounts crane arm, is filled using amplitude variation trolley collocation gin-pole truck and running block
Divide and make use of space and the advantage of itself, can crane arm disposably be hung into tower crane connection, and successfully place roofing layer, significantly
Reduce the influence that around skyscraper carrys out crane arm belt removal；
2) installation and removal are simple in structure, and easily operated, feasibility is strong；
3) gin-pole truck pedestal rear is welded with anti-squat system in this embodiment, can prevent gin-pole truck luffing well and arrive
Tipping backwards phenomenon caused by during maximum angle, smart structural design, securely and reliably.
Above disclosed is only one of mode that the present invention is implemented, and does not form the limitation to this patent right.If this
Technical staff in field is inspired by it, without departing from the spirit of the invention, not inventively design with
The similar case study on implementation of this programme, all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of device for mounting and dismounting crane arm, which is characterized in that including main device for carrying a tripot bar, horizontal girder steel, longitudinal girder steel, luffing
Trolley, gin-pole truck, running block, variable-amplitude steel wire rope and hoist rope, the longitudinal direction girder steel are erected by pinch roller and hook wheel mode
For Nogata to being fixed on main device for carrying a tripot bar, the transverse direction girder steel is horizontal positioned and parallel with main device for carrying a tripot bar lower end, and the one of the transverse direction girder steel
End is fixedly connected with longitudinal girder steel screw, and the other end is equipped with gin-pole truck pedestal, and the gin-pole truck is fixed on gin-pole truck pedestal, institute
It states gin-pole truck pedestal rear and is welded with anti-squat system, the transverse direction girder steel, longitudinal girder steel and main device for carrying a tripot bar lower end enclose jointly
One semiclosed rectangular area, the amplitude variation trolley is fixedly connected by U-bolt with horizontal girder steel, and it is semiclosed to be contained in this
In rectangular area, the variable-amplitude steel wire rope is connected with chain block, and one end is fixed on gin-pole truck, and the other end is fixed on main device for carrying a tripot
On bar, described hoist rope one end is fixed on main device for carrying a tripot bar, and the other end is fixed on after passing through running block on gin-pole truck.
2. the device of installation and removal crane arm according to claim 1, which is characterized in that the length of the transverse direction girder steel
For 2.5 double-lengths of used amplitude variation trolley.
3. the device of installation and removal crane arm according to claim 1, which is characterized in that the running block includes solid
The first pulley of main device for carrying a tripot bar upper end is scheduled on, for being arranged on the second pulley of " people " font gin-pole truck end and being connected with suspension hook
Three pulleys, the first pulley, second pulley be fixed pulley, the 3rd pulley be movable pulley, described hoist rope one end
Main device for carrying a tripot bar is fixed on, the other end is fixed on " people " font gin-pole truck after sequentially passing through first pulley, second pulley and the 3rd pulley
End.
4. the device of installation and removal crane arm according to claim 1, which is characterized in that the main device for carrying a tripot bar is equipped with two
A amplitude variation trolley is respectively the first amplitude variation trolley and the second amplitude variation trolley, and first is fixed on first amplitude variation trolley laterally
Girder steel, the described first horizontal girder steel are fixedly connected with first longitudinal direction girder steel, and second is fixed on second amplitude variation trolley laterally
Girder steel, the described second horizontal girder steel are fixedly connected with second longitudinal direction girder steel, and first amplitude variation trolley and the second amplitude variation trolley are same
Step movement.
5. the device of installation and removal crane arm according to claim 4, which is characterized in that the both ends of the gin-pole truck point
The the second gin-pole truck bottom on the first gin-pole truck pedestal and the second horizontal girder steel not being fixed on the first horizontal girder steel by axis pin
On seat.
6. the device of installation and removal crane arm according to claim 1, which is characterized in that the semiclosed rectangular area
Inside be additionally provided with it is anti-after sliding device, it is described it is anti-after sliding device main device for carrying a tripot bar lower end is fixed on by high-strength bolt.
7. the device of installation and removal crane arm according to claim 1, which is characterized in that the transverse direction girder steel and longitudinal direction
Girder steel is led to by side or H profile steel is made.
A kind of 8. method for mounting and dismounting crane arm, which is characterized in that comprise the following steps：
S1, front end crane arm weight is first determined according to tower crane model, the actual height size of the main device for carrying a tripot bar in tower crane amplitude variation trolley both sides,
By calculating relevant parameter, led to by side or H profile steel is fabricated to horizontal girder steel and longitudinal girder steel；
S2, gin-pole truck pedestal is set in one end of horizontal girder steel, the other end vertically connects longitudinal girder steel with bolt, using pinch roller and
It hooks wheel mode and longitudinal girder steel is fixed on main device for carrying a tripot bar lower end, horizontal girder steel is parallel with main device for carrying a tripot bar lower end, the transverse direction girder steel, longitudinal direction
Girder steel and main device for carrying a tripot bar lower end enclose a semiclosed rectangular area jointly, and amplitude variation trolley is contained in the semiclosed rectangle region
In domain, and amplitude variation trolley is fixed with horizontal girder steel by U-bolt, and amplitude variation trolley moves forward and backward, so as to which horizontal girder steel be driven to exist
It is moved forward and backward under the action of pinch roller and hook wheel；
S3, installation gin-pole truck, coordinate variable-amplitude steel wire rope to be connected to gin-pole truck end and main device for carrying a tripot bar upper end with a 5T chain block,
Not less than 5 meters, 5T chain blocks control the luffing distance of gin-pole truck for distance；Two luffing steel are bolted in gin-pole truck end position
Cord is toggled in longitudinal girder steel upper end, it is rear fasten the variable-amplitude steel wire rope when moving and move gin-pole truck to maximum /V fix, work as luffing
When trolley reaches removed position, amplitude variation trolley rear high-strength bolt to one an angle of 90 degrees of folder it is anti-after sliding device, it is fixed to become
Width trolley；
S4, first pulley is fixed in main device for carrying a tripot bar upper end, in " people " font gin-pole truck end set second pulley, by hoist rope
One end is fixed on main device for carrying a tripot bar, after the other end is each passed through first pulley, second pulley and the 3rd pulley that is connected with suspension hook, Gu
It is scheduled on the end of gin-pole truck；Hoist rope is passed through to surround to the 3rd downwards by second pulley again from first pulley lower end and is slided
Wheel, is then fixed in gin-pole truck end, is formed a running block, need to be dismantled crane arm and be toggled with hoist rope first
On pulley, hoist rope is tensed, 5T chain blocks through second pulley front and back position, reach removed position in the air；
After S5, one section crane arm of dismounting, suspension hook and crane arm are departed from, gin-pole truck is moved to 105 degree of angles, by two luffing steel wires
Rope is tensed on longitudinal girder steel, and in one 3T chain block of amplitude variation trolley front suspension, aerial change is controlled by 3T chain blocks
The speed that width trolley moves backward when 3T chain block iron chains length is inadequate, is fixed after preventing in amplitude variation trolley rear roller position
Sliding device converts 3T chain blocks position with this, it is ensured that amplitude variation trolley normally arrives safe and sound destination.
9. the method for installation and removal crane arm according to claim 8, which is characterized in that the length of the transverse direction girder steel
For 2.5 double-lengths of used amplitude variation trolley.
10. the method for installation and removal crane arm according to claim 8, which is characterized in that after the gin-pole truck pedestal
Side is welded with anti-squat system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108238552B (en) * | 2016-12-26 | 2019-06-11 | 广东庞源工程机械有限公司 | A kind of multi-functional bar of lying prone of the assembled being connect with structure |
| CN107697817B (en) * | 2017-10-30 | 2019-01-18 | 北京紫竹慧建设服务股份有限公司 | A kind of method of tower crane crane arm elongated degree in the air |
| CN109987532A (en) * | 2017-12-31 | 2019-07-09 | 广东庞源工程机械租赁有限公司 | A kind of assembling tower crane large arm merogenesis self-unloading is lain prone bar |
| CN111252678A (en) * | 2020-03-05 | 2020-06-09 | 中国华冶科工集团有限公司 | Tower crane luffing trolley motor replacing device and replacing method |
| CN111456471B (en) * | 2020-05-06 | 2020-10-30 | 杭州夏克机械科技有限公司 | Auxiliary balancing device for vertical splicing of steel beams |
| CN114084816A (en) * | 2021-11-12 | 2022-02-25 | 北京紫竹慧建设服务股份有限公司 | Counterweight arm cutting device and arm cutting process of tower crane |
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| DE2931421A1 (en) * | 1979-08-02 | 1981-02-12 | Reich Maschinen Gmbh | Tower crane with jib - has crab track extending beyond lower attachment points for jib extension section |
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