CN203474321U - Tower crane used for constructing and erecting electric transmission line iron towers - Google Patents
Tower crane used for constructing and erecting electric transmission line iron towers Download PDFInfo
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- CN203474321U CN203474321U CN201320605374.7U CN201320605374U CN203474321U CN 203474321 U CN203474321 U CN 203474321U CN 201320605374 U CN201320605374 U CN 201320605374U CN 203474321 U CN203474321 U CN 203474321U
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Abstract
The utility model provides a tower crane used for constructing and erecting electric transmission line iron towers. The tower crane used for constructing and erecting the electric transmission line iron towers comprises a steel structure base, a jacking sleeve frame, a tower body, a rotation supporting device, a lifting arm, a lifting hook, a tower head, an inhaul cable, a balance arm, a lifting arm luffing mechanism, a hoisting mechanism, a control chamber and a movable balancing weight system. The balancing weight system comprises a balancing weight, a balancing weight bearing trolley, a balancing weight hauling mechanism, a hauling steel wire rope, a deflecting pulley and a control system. The balancing weight bearing trolley bears the balancing weight to move along the balance arm, unbalanced moment exerted on the tower body can be reduced through the movable balancing weight, the stress condition of the tower body is improved, the hoisting capacity of the tower crane is improved or the sectional dimension and weight of the tower body are reduced under the equal hoisting capacity, and therefore the machining cost is lowered, and transportation dismounting and on-spot carrying are convenient. The tower crane used for constructing and erecting the electric transmission line iron towers has the advantages that the structural dimension of the tower body is small, the weight of the tower body is light, safety is high, hoisting is flexible, the construction efficiency is high, and the need of construction and erection of the electric transmission line iron towers of various voltage classes and various types can be met.
Description
Technical field
The utility model belongs to Overhead Transmission Line Construction equipment field, is specifically related to a kind of for organizing the special tower hoisting crane that packaged type balance weight system is installed of vertical iron tower of power transmission line.
Background technology
Tower erection construction is the construction link that in transmission line construction, work capacity is large, difficulty of construction is high, danger factor are many.Mainly use at present big on-wheel type hoisting crane or helicopter to organize the countries such as the tower construction ，Ru U.S., Canada abroad and generally use big on-wheel type hoisting crane or go straight up to set tower, and the major equipment of domestic group of tower construction is various forms of poles.Pole for construction of power transmission and transformation (comprising single pole, rocker pole etc.) belongs to the simple and easy weight-lifting equipment generally using in the current iron towers of overhead power transmission lines vertical construction of small-sized weight-lifting equipment ，Shi China, seldom uses abroad.Pole needs to arrange multiple tracks bracing wire in construction, and work progress is complicated, and cooperation requires high, and its quality is uneven simultaneously.Be subject to a varied topography, the conditionality such as have inconvenient traffic, a lot of towers position big on-wheel type hoisting crane cannot arrive, and use on a large scale helicopter to organize tower, does not still satisfy the requirements at present in China.Raising along with transmission line of electricity voltage class, turriform size and the weight of steel tower significantly increase, setting accuracy requires increasingly to improve, difficulty of construction is also increasing, simultaneously, construction safety has been proposed to requirements at the higher level, and therefore the demand of novel group of tower construction equipment of the current national conditions of the applicable China of exploitation is increasingly urgent.
Based on traditional double rocker pole principle, domestic transmission line construction unit has developed a few money large floor poles for organizing tower construction.Press arm mode of operation different, large floor pole can be divided into and lands two flat arm poles and two rocker poles that land, while wherein landing the arm work of two flat arm poles both sides, remain level, by the packaged type loading trolley on arm, along the crank motion of arm direction, realize the adjustment of lift heavy level attitude, while landing two rocker pole work, by the pitching of both sides arm, realize the change of lift heavy level attitude.Above-mentioned large floor pole mainly contains the two rocker poles of landing of Jiangsu Prov. Power Transforming-Converting Co.'s development, Hubei Electric Transmission & Transformation Engineering Company development land two flat arm poles, the balancing torque group tower hoisting crane of Shandong Electric Power Transmission & Transformation Engineering Co.'s development (form and two flat arm poles that land are basic identical) etc., these large floor poles are similar to tower crane for building in version, the key distinction is to have used two arm schemes, in tower head bilateral symmetry, two arms have been installed, can work both sides simultaneously, but need both sides arm to lift by crane simultaneously, simultaneously in place, to construction cooperation, require high, occupied ground is large, be subject to landform restriction obviously, workmen is many.
In prior art, also have a group of tower tower crane of China Electric Power Research Institute's research and development, it has adopted single arm, without the design plan of equilibrium arm, and be applied in UHV transmission line construction, but due to its length of boom shorter (lengthening merely arm will cause arm weight to enlarge markedly), the deficiencies such as equilibrium arm are not installed, cause its tower body sectional dimension and weight larger, cannot meet the vertical needs of group of the large weight steel tower of extra high voltage line.Although in prior art, group tower tower crane was also done to a lot of research, equal Shortcomings part, for example:
Publication number is that the Chinese invention patent application of CN102491199A discloses a kind of tower crane and equilibrium arm thereof, equilibrium arm comprises: arm joint, and arm joint comprises the first arm joint, the second arm joint and is removably connected at least one insert jib section between the first arm joint and the second arm joint in turn; Counterbalanced weight, counterbalanced weight is arranged on the first arm joint; Support, support is arranged on the second arm joint; The pull bar of adjustable in length, one end of pull bar is removably connected with support, and any connection location in a plurality of different connection location that the other end of pull bar saves from the first arm removably connects.This utility model is changing counterbalanced weight with the distance between the line of centers of pull bar and the intersection point of the line of centers of the first arm joint, thereby has improved the stressing conditions of arm joint.The object of this utility model is to change counterbalanced weight with the distance between the line of centers of pull bar and the intersection point of the line of centers of the first arm joint, thereby has improved the stressing conditions of arm joint.The principle of work of this utility model be length by adjusting equilibrium arm to change the position of counterbalanced weight, by the arm adding or removes equilibrium arm, save, to change the length of equilibrium arm, and then the position of change counterbalanced weight.In order to improve after equilibrium arm length variations, because pull bar angle changes the stressed adverse effect of equilibrium arm, this utility model, by a plurality of pull bar connecting bores are set in equilibrium arm end, guarantees that pull bar and equilibrium arm intersection point are near counterbalanced weight center of gravity, thereby improves the stressed of equilibrium arm.The object of this utility model and principle are all irrelevant with the application.
Notification number is the tower crane that the Chinese utility model patent of CN202744238U discloses a kind of automatic control balance, comprise tower body, equilibrium arm, crane arm, balancing trolley, crane carriage, steel rope and suspension hook, balancing trolley is provided with counterbalanced weight, also include controller, described crane carriage is provided with the coder I that detects crane carriage position, balancing trolley is provided with the coder II that detects balancing trolley position, balancing trolley and crane carriage are motor-driven motor-driven carrier, crane carriage, steel rope or suspension hook are provided with the weight sensor that detects hoisting heavy weight, controller is for received code device I, the detection signal of coder II and weight sensing and for controlling the motor of balancing trolley and crane carriage.The application of this utility model is flat arm tower crane, and the application is arm tower crane, and both principle of work are different.This utility model does not provide concrete layout and the principle of work of counterbalanced weight travel mechanism yet, has significantly different from the application.
Publication number is that the Chinese invention patent of CN101624165A discloses a kind of combined counterweight device and adopted the hoisting crane of this device, for existing weight-balancing device, cannot realize the problem that fore-and-aft direction moves, combined counterweight device comprises equilibrium arm body, two horizontal slide rails, counterbalanced weight support, two vertical oil cylinders and two cross cylinders described in this patent; Wherein, vertically oil cylinder is fixed on described counterbalanced weight support by the cylinder body of two vertical oil cylinders, and described counterbalanced weight support can be along the horizontal slide rail front and back slippage that is fixedly installed on turntable two sides of tail under the effect of two cross cylinders.Counterbalanced weight body can move along fore-and-aft direction, and slippage can effectively improve hoisting crane at large brachium, the complete machine stability under operating mode significantly backward; Slippage can reduce the length of car load forward, makes hoisting crane characteristics of compact layout, meanwhile, has less turning-circle diameter when negotiation of bends, has improved the rideability of hoisting crane.This utility model is for runabout crane, be mainly used in solving large-tonnage runabout crane long problem of complete machine length under non-lift heavy state and transition state, by being set, two cross cylinders realize the forward and backward movement of counterbalanced weight along continuous straight runs, in working order, the position of this counterbalanced weight is changeless, has essential distinction with the application.
Notification number is that the Chinese utility model patent of CN201770430U discloses a kind of automatic balance tower crane, and it has solved and when existing tower crane causes the serious and stock of unbalance situation to raise due to equilibrium arm and the stressed difference of crane arm, has had the problem wasting time and energy.The structure of this hoisting crane is: on equilibrium arm, be respectively equipped with counterbalanced weight and luffing mechanism, on equilibrium arm, be fixed with the level switch in the current supply circuit that is serially connected in its motor, the afterbody of equilibrium arm is fixed with travel switch and travel switch is serially connected in respectively in the current supply circuit of equilibrium arm and crane arm motor.Overcome and when existing tower crane causes the serious and stock of unbalance situation to raise due to equilibrium arm and the stressed difference of crane arm, had the problem wasting time and energy, crane arm and equilibrium arm remain at a horizontality, effectively improved the safety of producing, and make the rising operation of stock time saving and energy saving by changing the structure of tower body, effectively improve operating efficiency, there is simple in structure, low cost and other advantages simultaneously.This utility model explanation " crane arm and equilibrium arm remain at a horizontality ", be that application is horizontal arm tower crane, the application is arm tower crane, and the object that installs counterbalanced weight locomotive function additional is to be control tower machine lean forward moment and centrifugal castor difference, reduce tower body Moment, thereby it is stressed to improve tower body, reduce tower body sectional dimension and weight; In addition, in this utility model, drum in " make equilibrium arm identical with the gravity on crane arm, equilibrium arm and crane arm are in horizontality ".On control policy, the description of while tilting " equilibrium arm and crane arm generation opposite side " is wrong, and " make equilibrium arm identical with the gravity on crane arm " this will cause counterbalanced weight very heavy, be unsuitable for transmission line of electricity group tower and use.
Publication number is that the Chinese invention patent application of CN102862921A discloses a kind of mobile lift crane with the counterbalanced weight of position changeable, comprising: have the movably car body of ground engagement parts; Thereby be rotationally coupled to the turntable that on car body, relatively face connecting part part swings; Be pivotally mounted on the cantilever of turntable front portion; With its first end, be arranged on the mast on turntable; Be connected to the rear jib between mast and the rear portion of turntable; Removable counterbalanced weight unit; At least one hydraulic ram; And at least one arm, described arm is connected on turntable, with its second end connecting fluid compressing cylinder with its first end pivotally.Described arm and hydraulic ram are connected between turntable and counterbalanced weight unit, thereby the flexible position of the relative turntable in counterbalanced weight unit that makes of hydraulic ram changes.In a kind of method of operation, when non-loaded in the load ropes under when being dangled by cantilever, make counterbalanced weight be positioned at the place ahead of a point under mast top; When ropes upper support has load, make counterbalanced weight be positioned at mast top rear; The picking up of hoisting crane, mobile and place in operating process, removable counterbalanced weight is from can't help ground supports, but is indirectly supported on car body by ground engagement parts.In another embodiment, described hoisting crane is for carrying out picking up, move and placing of load, wherein by making hydraulic ram flexible in the process picking up, move and place operation, removable counterbalanced weight is shifted near or away from turntable, to help balanced load, but counterbalanced weight unit is from can't help ground supports, but be indirectly supported on car body by ground engagement parts.This utility model is for the additional larger problem of counterbalanced weight of super-tonnage runabout crane, proposed to have gone out the position that individual connecting rod mechanism is adjusted counterbalanced weight.And the application is by counterbalanced weight rope luffing winding machine, the principle of work of the two is different.
For the deficiencies in the prior art, the utility model proposes a kind of for the vertical group tower special tower hoisting crane that packaged type balance weight system is installed of iron tower of power transmission line group.
Utility model content
It is a kind of for organizing the tower crane of vertical iron tower of power transmission line, for meeting the vertical construction demand of UHV transmission line steel tower that the purpose of this utility model is to provide.
For achieving the above object, the utility model is taked following technical scheme:
A kind of for organizing the tower crane of vertical iron tower of power transmission line, comprise steel structure base, jacking stock, tower body, adhere to frame, adhere to steel rope, rotary supporting device, arm, suspension hook, tower head, drag-line, equilibrium arm, suspension arm variable-amplitude mechanism, lifting mechanism and control cabin, it is characterized in that: this hoisting crane also comprises packaged type balance weight system, described balance weight system comprises counterbalanced weight, counterbalanced weight carrying dolly, counterbalanced weight trailer coupling, haulage cable, deflection sheave and control system, described counterbalanced weight carrying dolly is carrying counterbalanced weight and along equilibrium arm, is moving under the drive of counterbalanced weight trailer coupling and haulage cable, one end of described equilibrium arm is connected with rotary supporting device, and its other end is connected with tower head top by drag-line, hang on the described counterbalanced weight carrying dolly on equilibrium arm and be hung with counterbalanced weight, described counterbalanced weight trailer coupling and control system are installed on equilibrium arm, and described counterbalanced weight trailer coupling walked around by described haulage cable and its two ends are connected with the both sides of counterbalanced weight carrying dolly by being installed on the deflection sheave at equilibrium arm two ends respectively.
Further, equilibrium arm luffing mechanism is installed on described equilibrium arm, described equilibrium arm luffing mechanism comprises winch and steel rope; Described equilibrium arm is the lower horizontality that keeps in working order, when dismounting tower crane, described equilibrium arm can be done luffing at the hinge-point of perpendicular Nei Raoyu suspension arm variable-amplitude mechanism by the steel rope by equilibrium arm luffing mechanism under the winch effect of equilibrium arm luffing mechanism, finally draw in described tower head one side, to reduce the sectional dimension of tower crane topside, special tower hoisting crane can be backed off by organizing the steel tower top window of having stood, realize at the inner dismounting of steel tower special tower hoisting crane.Described equilibrium arm luffing mechanism is installed on equilibrium arm.
Further, described steel structure base is provided with tower body, described tower body outer cover is equipped with jacking stock, and described tower body top is provided with rotary supporting device and tower head from the bottom to top successively, and described equilibrium arm and arm are articulated with respectively the outer end, relative both sides of rotary supporting device; Be sheathed on four jiaos of outsides adhering to frame in tower body outside by adhering to steel rope and waiting that organizing vertical steel tower is connected; Described lifting mechanism and control cabin rest on the ground, and described lifting mechanism is connected with the suspension hook being arranged on arm by hoist rope, realizes the dipping and heaving of suspension hook; Described control cabin is connected with lifting body with lifting mechanism, packaged type balance weight system, suspension arm variable-amplitude mechanism, swing type mechanism by control cables, to realize the control to above-mentioned each mechanism.
Further, described arm adopts space truss structure, by arm joint (at least adopting 2 joints), by bearing pin, is formed by connecting, and described suspension arm variable-amplitude mechanism comprises winch and steel rope; One end of described arm is hinged with rotary supporting device, the steel rope of described suspension arm variable-amplitude mechanism is connected with the other end of arm by tower head top, and described arm is done luffing under the tractive of this steel rope in perpendicular around hinge-point; The winch of suspension arm variable-amplitude mechanism, by the steel rope of folding and unfolding suspension arm variable-amplitude mechanism, is realized the pitching luffing of arm.
Further, described steel structure base is formed by shaped steel and Plate Welding, and it is arranged on concrete bearing platform by holding-down bolt.
Further, described jacking stock adopts space truss structure, and lifting body is installed on it; When tower crane operation, described jacking stock with tower body without being connected; When needs lifting tower body, described jacking stock is connected with tower body by lifting body, and it is carried out to descending operation.
Further, described tower body is stacked and is assembled by some standard knots, uses bearing pin to connect between every two adjacent standard knots; Described standard knot adopts space truss structure.According to the large I of the suffered unbalanced moment of tower body, by two (L-types) or four (plane framework) standard nodal plates, by bolt or bearing pin, connected to form, after assembling, cross section is square.
Further, described rotary supporting device comprises upper and lower pivoting support and swing type mechanism, by described swing type mechanism, realize the relative rotary motion of upper and lower pivoting support, the top Joint of described lower pivoting support and tower body, the top of described upper rotary bearing is provided with tower head, and its outer end, both sides is hinged with the end of equilibrium arm and arm respectively.
Further, described in adhere to frame inner side be provided with for along the vertical mobile roller of tower body, described in adhere to frame four jiaos of outsides be all welded with connecting panel, this connecting panel founds steel tower and is connected with waiting to organize by adhering to steel rope respectively.
Compared with prior art, the group tower construction that packaged type balance weight system is installed of the utility model has following beneficial effect with special tower crane tool:
1) special tower hoisting crane opens, brakes steadily, impacts little.
2) speed is controlled flexibly, can realize infinite speed variation, and during erection tower material, precision in place is high.
3) He Tashang work compound in ground is convenient, and has assembled on tower sheet ground is Liftable, does not need to consider both sides lifting Research on Interactive Problem, and lifting mode is flexible.
4) in hoisting process without bracing wire is set, operating personal is few.
5) ground configuration is succinct, and occupied ground is few.
6) force-bearing situation of special tower hoisting crane tower body of packaged type balance weight system is installed good, load-carrying ability is strong, safe.
7), while possessing equal load-carrying ability, the special tower hoisting crane that packaged type balance weight system is installed is low to tower body cross section and requirement of strength, can reduce relevant cost.
Accompanying drawing explanation
In order to make content of the present utility model by clearer understanding, and be convenient to the description of the specific embodiment, provide the accompanying drawing relevant to the utility model below, be described as follows:
Fig. 1 is the structural representation of of the present utility model group of tower tower crane embodiment;
Fig. 2 is arm schematic diagram, and wherein Fig. 2 (a) is the arm embodiment schematic diagram being comprised of 2 joint lifting joints, and Fig. 2 (b) is the arm embodiment schematic diagram being comprised of 3 joint lifting joints, and Fig. 2 (c) is arm schematic cross-section;
Fig. 3 is equilibrium arm and packaged type balance weight system schematic diagram;
Fig. 4 is the schematic diagram that of the present utility model group of tower tower crane uses suspension hook erection tower material.
The specific embodiment
Below in conjunction with accompanying drawing, to the group that packaged type balance weight system is installed of the utility model, vertical steel tower construction is further described in detail with tower crane.
As Figure 1 and Figure 4, the utility model embodiment's is a kind of for organizing the group tower special tower hoisting crane that packaged type balance weight system is installed of vertical iron tower of power transmission line, mainly comprises: steel structure base 1, jacking stock 2, tower body 3, adhere to frame 4, adhere to steel rope 5, rotary supporting device 6, arm 7, suspension hook 8, tower head 9, drag-line 10, equilibrium arm 11, packaged type balance weight system 12, suspension arm variable-amplitude mechanism 13, lifting mechanism 14 and control cabin 15.
Described steel structure base 1 is formed by shaped steel and Plate Welding, is arranged on concrete bearing platform.When concrete bearing platform is cast, be embedded with holding-down bolt, steel structure base 1 is connected by holding-down bolt with concrete bearing platform, to bear described special tower hoisting crane and by the weight of tower crane part and tower body unbalanced moment.
Described tower body 3 is stacked and is assembled by a plurality of standard knots.Described standard knot is space truss structure, by shaped steel, is welded, and cross section is square.Between described adjacent standard knot, use bolt to be fixedly connected with.During lifting operation, tower body 3 bottoms and described steel structure base 1 are used bearing pin to connect into integral body, thereby assurance special tower hoisting crane is stressed, can be passed to described steel structure base 1 and concrete bearing platform by described tower body 3; When increasing or reducing tower body, extract the bearing pin that is connected of described tower body 3 bottoms and described steel structure base 1, can remove being connected of tower body and steel structure base, thereby can, by lifting body by tower body jack-up, from tower body bottom, add new standard knot to increase tower body.
The described frame 4 that adheres to is sleeved on tower body outside.The described frame 4 that adheres to is for square, its inner side is provided with roller, and the main chord touch scrolling of roller and standard knot adheres to four jiaos of outsides of frame and is welded with connecting panel, by adhering to steel rope 5 and treating as shown in Figure 4, organize vertical steel tower and be connected, while guaranteeing increase or reduce tower body, tower machine stablizes.
Described jacking stock 2 is also installed on described steel structure base 1.Described jacking stock 2 is space truss structure, uses bolt to be fixedly connected with described steel structure base 1.Described tower body 3 is positioned at described jacking stock 2 inside.The lifting body being comprised of jack-up hydraulic ram, hydraulic power unit and jacking control housing is installed on described jacking stock 2.When the operation of special tower crane hanging component, described jacking stock 2 is connected with described tower body 3 nothings; When needs are increased or reduce tower body, the jack-up hydraulic ram of described jacking stock 2 is connected with tower body, thereby can be by tower body jack-up.
Described tower body 3 tops are provided with rotary supporting device 6.Described rotary supporting device 6 is comprised of lower pivoting support, upper rotary bearing and swing type mechanism, and swing type mechanism is realized the relative rotary motion of lower pivoting support and upper rotary bearing.The lower pivoting support of described rotary supporting device 6 is used bolt to be fixedly connected with tower body.The hinged described arm 7 in upper rotary bearing outer end of described rotary supporting device 6, at the upper rotary bearing opposite side outer end hinged equilibrium arm 11 relative with arm 7.By rotary supporting device, can guarantee to realize the rotation of the topsides such as arm 7, tower head 9, equilibrium arm 11 under the motionless prerequisite of tower body, thus realize can be in the circumference range centered by tower body by tower crane part hoisted in position.
Described arm 7 is space truss structure, by 2～3 joint arm joints, by bearing pin, is assembled and is formed.Figure 2 shows that described arm 7 schematic diagrams, wherein Fig. 2 (a) is the arm embodiment schematic diagram being comprised of 2 joint lifting joints, and Fig. 2 (b) is the arm embodiment schematic diagram being comprised of 3 joint lifting joints.Described arm 7 comprises the arm joints such as first joint 31, periproct 32 and middle node 33, and wherein said middle node 33 can need to determine whether install according to actual lifting amplitude, to increase or to shorten length of boom, improves the economy that special tower hoisting crane is used.Between arm joint, using bearing pin 34 to be fixedly connected with becomes a carrying integral body.The end of described first joint 31, with pin shaft hole 35, can be used the upper rotary bearing of bearing pin and rotary supporting device 6 to be articulated and connected, and makes around hinge-point, in perpendicular, to do luffing under the tractive of variable-amplitude steel wire rope of arm 7 Ke suspension arm variable-amplitude mechanisms 13.The cross section of described arm 7 is triangular form (Fig. 2 (c)), mainly comprises top boom 36, lower boom 37, side web member 38 and bottom surface web member 39.
Described equilibrium arm 11 adopts plane frame structure or space truss structure, and as shown in Figure 3, its one end is articulated with the upper rotary bearing outer end of described rotary supporting device 6 to its plane frame structure embodiment, and the other end is connected with tower head 9 tops by drag-line 10.Equilibrium arm luffing mechanism is installed on equilibrium arm 11, and described equilibrium arm luffing mechanism comprises winch and steel rope; Equilibrium arm is the lower horizontality that keeps in working order, when dismounting tower crane, equilibrium arm can be done luffing at the hinge-point of perpendicular Nei Raoyu suspension arm variable-amplitude mechanism 13 by the steel rope by equilibrium arm luffing mechanism under the winch effect of equilibrium arm luffing mechanism, finally draw the side in tower head 9 in, to reduce the sectional dimension of tower crane topside.
Described packaged type balance weight system 12 is comprised of counterbalanced weight 21, counterbalanced weight carrying dolly 22, counterbalanced weight trailer coupling 23, haulage cable 24, deflection sheave 25 and control system 26.Described counterbalanced weight carrying dolly 22 hangs on described equilibrium arm 11 lower booms, is hung with described counterbalanced weight 21 on it.According to the variation of the moment that leans forward of described arm 7 and hoisting heavy generation, counterbalanced weight carrying dolly 22 can carry counterbalanced weight 21 and along equilibrium arm 11, move under counterbalanced weight trailer coupling 23 and haulage cable 24 drives, thereby reduces the unbalanced moment that tower body 3 bears.Described counterbalanced weight trailer coupling 23 and control system 26 are arranged on equilibrium arm, described haulage cable 24 is walked around described counterbalanced weight trailer coupling 23, and its two ends are connected with the two ends of counterbalanced weight carrying dolly 22 by being installed on the deflection sheave 25 at equilibrium arm two ends respectively.
Counterbalanced weight moves principle: the moment that leans forward that control system real-time tracking arm, load hook, hoisting wirerope and lift heavy produce, the centrifugal castor that other annex produces on equilibrium arm, counterbalanced weight, counterbalanced weight carrying dolly and equilibrium arm do not leaning forward moment 70～80% interval in time, control system starts counterbalanced weight trailer coupling, counterbalanced weight carrying dolly drives counterbalanced weight to lean forward in 70～80% intervals of moment to change centrifugal castor, centrifugal castor is controlled at along carrying out position adjustment before and after equilibrium arm.
The moment that leans forward that packaged type balance weight system 12 produces by control system 26 Real-Time Monitoring arms and lift heavy, adjust at any time the position of counterbalanced weight, thereby can greatly reduce tower body 3 moments of flexure, thereby reduce tower body sectional dimension and weight, convenient transportation, mounting or dismounting and carrying.
The 13，Gai of suspension arm variable-amplitude mechanism suspension arm variable-amplitude mechanism 13 is installed on described equilibrium arm 10 and comprises winch and steel rope.
On the upper rotary bearing of described rotary supporting device 6, tower head 9 is also installed.Described tower head 9 is truncated rectangular pyramids formula space truss structure, and it uses bolt to be fixedly connected with upper rotary bearing.
The suspension arm variable-amplitude steel rope of described suspension arm variable-amplitude mechanism 13 is connected with arm 7 ends by described tower head 9 tops, realizes the pitching luffing of arm 7 by suspension arm variable-amplitude mechanism 13 winch folding and unfolding suspension arm variable-amplitude steel ropes.Luffing operation by arm 7, can realize by the horizontal position adjustment of tower crane part.
A kind of equilibrium arm that the group tower special tower hoisting crane of packaged type balance weight system is installed of the utility model is provided with packaged type balance weight system, greatly reduce the suffered moment of flexure of tower body under work and off working state, the tower body sectional dimension and the weight that reduce, transportation, mounting or dismounting and use have been facilitated, reduced manufacturing cost and use cost, there is lifting mechanism, suspension arm variable-amplitude mechanism, swing type mechanism, lifting body simultaneously, multiple functional, lifting mode is flexible, workmen is few, and the group that can meet the UHV transmission line steel tower under large hoisting moment is vertical.Tower crane of the present utility model reduces the suffered unbalanced moment of tower body by packaged type counterbalanced weight, improve tower body force-bearing situation, reduce tower body sectional dimension and weight, meet the vertical needs of group of the extra-high voltage iron tower that weight is larger, installation, dismounting and the transportation of convenient group tower special tower hoisting crane, tower body adopts split blade type standard knot simultaneously, can simplify transportation and the handling of hoisting crane, meets the construction transportation request under the complex-terrains such as mountain region mire.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present utility model, and do not depart from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (9)
1. one kind for organizing the tower crane of vertical iron tower of power transmission line, comprise steel structure base, jacking stock, tower body, adhere to frame, adhere to steel rope, rotary supporting device, arm, suspension hook, tower head, drag-line, equilibrium arm, suspension arm variable-amplitude mechanism, lifting mechanism and control cabin, it is characterized in that: this hoisting crane also comprises packaged type balance weight system, described balance weight system comprises counterbalanced weight, counterbalanced weight carrying dolly, counterbalanced weight trailer coupling, haulage cable, deflection sheave and control system, described counterbalanced weight carrying dolly is carrying counterbalanced weight and along equilibrium arm, is moving under the drive of counterbalanced weight trailer coupling and haulage cable, one end of described equilibrium arm is connected with rotary supporting device, and its other end is connected with tower head top by drag-line, hang on the described counterbalanced weight carrying dolly on equilibrium arm and be hung with counterbalanced weight, described counterbalanced weight trailer coupling and control system are installed on equilibrium arm, and described counterbalanced weight trailer coupling walked around by described haulage cable and its two ends are connected with the both sides of counterbalanced weight carrying dolly by being installed on the deflection sheave at equilibrium arm two ends respectively.
2. tower crane as claimed in claim 1, is characterized in that: equilibrium arm luffing mechanism is installed on described equilibrium arm, and described equilibrium arm luffing mechanism comprises winch and steel rope; Described equilibrium arm is the lower horizontality that keeps in working order, when dismounting tower crane, described equilibrium arm steel rope by equilibrium arm luffing mechanism under the winch effect of equilibrium arm luffing mechanism is done luffing at the hinge-point of perpendicular Nei Raoyu suspension arm variable-amplitude mechanism, finally draws in described tower head one side.
3. tower crane as claimed in claim 1, it is characterized in that: described steel structure base is provided with tower body, described tower body outer cover is equipped with jacking stock, described tower body top is provided with rotary supporting device and tower head from the bottom to top successively, and described equilibrium arm and arm are articulated with respectively the outer end, relative both sides of rotary supporting device; Be sheathed on four jiaos of outsides adhering to frame in tower body outside by adhering to steel rope and waiting that organizing vertical steel tower is connected; Described lifting mechanism and control cabin rest on the ground, and described lifting mechanism is connected with the suspension hook being arranged on arm by hoist rope; Described control cabin is connected with lifting body with lifting mechanism, packaged type balance weight system, suspension arm variable-amplitude mechanism, swing type mechanism by control cables.
4. tower crane as claimed in claim 1, is characterized in that: described arm is formed by connecting by bearing pin by arm joint, and described suspension arm variable-amplitude mechanism comprises winch and steel rope; One end of described arm is hinged with rotary supporting device, the steel rope of described suspension arm variable-amplitude mechanism is connected with the other end of arm by tower head top, and described arm is done luffing under the tractive of this steel rope in perpendicular around hinge-point; The winch of suspension arm variable-amplitude mechanism, by the steel rope of folding and unfolding suspension arm variable-amplitude mechanism, is realized the pitching luffing of arm.
5. tower crane as claimed in claim 1, is characterized in that: described steel structure base is formed by shaped steel and Plate Welding.
6. tower crane as claimed in claim 1, is characterized in that: described jacking stock adopts space truss structure, and lifting body is installed on it; When tower crane operation, described jacking stock with tower body without being connected; When needs lifting tower body, described jacking stock is connected with tower body by lifting body, and it is carried out to descending operation.
7. tower crane as claimed in claim 1, is characterized in that: described tower body is stacked and assembled by standard knot, uses bearing pin to connect between every two adjacent standard knots; Described standard knot adopts space truss structure.
8. tower crane as claimed in claim 1, it is characterized in that: described rotary supporting device comprises upper and lower pivoting support and swing type mechanism, by described swing type mechanism, realize the relative rotary motion of upper and lower pivoting support, the top Joint of described lower pivoting support and tower body, the top of described upper rotary bearing is provided with tower head, and its outer end, both sides is hinged with the end of equilibrium arm and arm respectively.
9. tower crane as claimed in claim 1, it is characterized in that: described in adhere to frame inner side be provided with for along the vertical mobile roller of tower body, described four jiaos of outsides adhering to frame are all welded with connecting panel, and this connecting panel is respectively by adhering to steel rope and waiting that organizing vertical steel tower is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605374.7U CN203474321U (en) | 2013-09-29 | 2013-09-29 | Tower crane used for constructing and erecting electric transmission line iron towers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605374.7U CN203474321U (en) | 2013-09-29 | 2013-09-29 | Tower crane used for constructing and erecting electric transmission line iron towers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203474321U true CN203474321U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320605374.7U Expired - Lifetime CN203474321U (en) | 2013-09-29 | 2013-09-29 | Tower crane used for constructing and erecting electric transmission line iron towers |
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| Country | Link |
|---|---|
| CN (1) | CN203474321U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744360A (en) * | 2016-12-19 | 2017-05-31 | 蚌埠市江南建筑机械有限公司 | The derrick crane that a kind of counterweight can easily be accommodated |
| CN109231090A (en) * | 2018-09-26 | 2019-01-18 | 山东飞越钢结构工程有限公司 | A kind of movable type wall construction platform |
-
2013
- 2013-09-29 CN CN201320605374.7U patent/CN203474321U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744360A (en) * | 2016-12-19 | 2017-05-31 | 蚌埠市江南建筑机械有限公司 | The derrick crane that a kind of counterweight can easily be accommodated |
| CN109231090A (en) * | 2018-09-26 | 2019-01-18 | 山东飞越钢结构工程有限公司 | A kind of movable type wall construction platform |
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Granted publication date: 20140312 |