CN218320409U - Continuous lifting mechanism - Google Patents

Abstract

The application provides a continuous lifting mechanism which is arranged on a crane frame body and used for lifting the crane frame body along the vertical direction, and comprises a lifting upright post and a climbing oil cylinder; the lifting upright post is inserted into a reserved through hole of the hoisting crown block frame body and moves relative to the hoisting crown block frame body, a plurality of insertion holes distributed along the length direction of the lifting upright post are formed in the lifting upright post, and the bottom of the lifting upright post is anchored at the top of the installed tower post segment; the climbing oil cylinder is fixed on a crane frame body, and the extending end of a piston rod of the climbing oil cylinder is provided with a plug pin which enters and exits a jack of the lifting upright post. Through the splicing fit between the lifting upright post and the climbing oil cylinder in the continuous climbing mechanism, the climbing oil cylinder drives the structure part connected with the climbing oil cylinder to climb along the lifting upright post. Meanwhile, the lifting upright column is anchored at the top of the installed tower column segment, and the tower column is used for providing support for the continuous lifting mechanism, so that the stability of the crane for lifting the ancestry is ensured.

Description

Continuous lifting mechanism

Technical Field

The application relates to the technical field of crane equipment, in particular to a continuous lifting mechanism.

Background

The cable-stayed bridge is also called oblique-tension bridge, is a bridge with main beam directly pulled on bridge tower by using many guys, and is a structural system formed from pressure-bearing tower, pulled guys and bent-bearing beam body. It can be seen as a multi-span elastically supported continuous beam with guy cables instead of buttresses. It can reduce the bending moment in the beam body, reduce the building height, lighten the structural weight and save materials.

The cable-stayed bridge mainly comprises a cable tower, a main beam and a stay cable, and the steel tower sections, the steel beam sections and other bridge construction members of the tower column are hoisted by the common tower crane at present. Because the steel tower segment and the steel beam segment are heavy, a large-tonnage tower crane is often needed to hoist the crane to a corresponding station for installation, the operation is complicated, the danger is high, the manufacturing cost is high, the horizontal thrust of the tower crane attached to a wall during construction is large for a tower column, the horizontal thrust is easy to exceed the stress limit of a cable tower structure, and the stress of a bridge is very unfavorable.

Disclosure of Invention

The application aims to provide a continuous lifting mechanism capable of realizing self-climbing of a crane.

In order to achieve the above object, the present application provides the following technical solutions:

a continuous lifting mechanism is arranged on a crane frame body and used for lifting the crane frame body along the vertical direction, and comprises a lifting upright post and a climbing oil cylinder;

the lifting upright post is inserted into a reserved through hole of the hoisting crown block frame body and can move relative to the hoisting crown block frame body, and a plurality of insertion holes distributed along the length direction of the lifting upright post are formed in the lifting upright post;

the climbing oil cylinder is fixed on a crane crown block frame body, and the extending end of a piston rod of the climbing oil cylinder is provided with an inserting and pulling pin which enters and exits the inserting hole of the lifting upright post so as to push the lifting upright post to move along the length direction of the lifting upright post.

Further setting: the climbing oil cylinders are at least provided with two groups corresponding to each lifting upright post, and the climbing oil cylinders in different groups stretch and retract alternately to push the lifting upright posts to move along the length direction of the lifting upright posts.

Further setting: the lifting upright is a square upright, four side faces of the lifting upright are provided with jacks, and four groups of climbing oil cylinders are arranged on the four side faces of the lifting upright corresponding to the four side faces of the lifting upright.

Further setting: the four groups of climbing oil cylinders are grouped pairwise, two groups of climbing oil cylinders of the same group are synchronous in stretching, and the two groups of climbing oil cylinders are correspondingly positioned on opposite surfaces of the climbing oil cylinders and are arranged oppositely.

Further setting: each group of climbing oil cylinders comprises three oil cylinders which are lifted synchronously, and the extending ends of piston rods of the three oil cylinders are provided with mounting seats for mounting plug pins.

Further setting: four lifting columns are arranged corresponding to four corner ends of the hoisting crown block frame body.

Further setting: four be equipped with lift parallel connection mechanism between two adjacent of lift stand, lift parallel connection mechanism includes parallel connection and double-end lift cylinder, the both ends of parallel connection all are equipped with double-end lift cylinder, the end that stretches out of two piston rods of double-end lift cylinder all be provided with can with lift stand grafting complex plug pin.

Compared with the prior art, the scheme of the application has the following advantages:

the continuous lifting mechanism is suitable for self-climbing operation of a crane, and the climbing oil cylinder is connected with a structure needing climbing through the lifting stand column in the continuous climbing mechanism and the splicing cooperation between the climbing oil cylinders, so that the climbing oil cylinder drives the structure part connected with the climbing oil cylinder to climb along the lifting stand column under the condition that the lifting stand column is fixed, and the structure is simple. Meanwhile, the lifting upright column is anchored at the top of the installed tower column segment, and the tower column is used for providing support for the continuous lifting mechanism, so that the stability of the crane for lifting the ancestry is ensured.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of one embodiment of a lifting and jacking integrated self-climbing crane of the present application;

FIG. 2 is an enlarged view of the part A of FIG. 1;

FIG. 3 is a side view of an embodiment of the present application of a lifting jack integrated self-climbing crane;

FIG. 4 is a schematic structural diagram of a continuous climbing mechanism in the lifting and jacking integrated self-climbing crane of the present application;

FIG. 5 is a schematic view of a connection structure between a continuous climbing mechanism and a dual-anchor type spreader in the lifting and jacking integrated self-climbing crane of the present application;

FIG. 6 is a schematic structural diagram of a spreader of the present application for a lifting and jacking integrated self-climbing crane;

FIG. 7 is a structural top view of a lifting and jacking integrated self-climbing crane spreader of the present application;

FIG. 8 is a schematic structural diagram of a construction operation platform in the lifting and jacking integrated self-climbing crane of the present application;

fig. 9 is a process flow diagram of the method for constructing the double-tower column cable tower by using the hoisting and jacking integrated self-climbing crane of the present application.

In the figure, 1, a main truss; 2. a sliding support frame; 21. the main frame body is supported in a sliding manner; 22. sliding the walking; 221. a sliding seat; 222. a sliding oil cylinder; 23. the hinged support is fixed on the tower wall; 231. a fixed seat; 232. a connecting seat; 3. a hoisting and jacking integrated crown block system; 31. a crane frame body; 32. a continuous climbing mechanism; 321. lifting the upright post; 322. a climbing oil cylinder; 33. lifting the hanger body; 331. a roller; 332. transversely moving the oil cylinder; 34. a spreader; 3411. an upper hanging beam; 3412. a lower hanging bracket; 342. a lifting claw; 343. a movable pulley block; 344. a hydraulic cylinder; 345. a revolving structure; 3451. an inner ring; 3452. an outer ring; 3453. a motor; 346. an anchoring seat; 35. a drive mechanism; 36. a lifting parallel mechanism; 361. parallel connection; 362. a double-ended lift cylinder; 4. a hoist lifting system; 41. a winch; 42. a wire rope; 43. a rope winding drum; 5. constructing an operation platform; 51. a crown block operation maintenance platform; 52. an upper maintenance platform; 53. a lower maintenance platform; 54. transversely sliding the welding platform; 55. a longitudinal welding platform; 56. repairing the platform; 57. and an upper channel and a lower channel.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

Referring to fig. 1 to 8, in order to solve the problem of construction of a cable tower with a single tower column or a double tower column, the present application provides a crane with a hoisting and jacking integrated self-climbing function, which can realize self-climbing of the crane without a large hoisting device and can be applied to cable tower construction in different geographic environments.

The hoisting and jacking integrated self-climbing crane (hereinafter referred to as a "crane") comprises a main truss 1, a sliding support frame 2, a hoisting and jacking integrated crown block system 3 and a winch system 4, wherein the main truss 1 is erected at the top of a tower column meeting construction requirements, and the sliding support frame 2 is positioned below the main truss 1 and is used for being anchored with the tower column to support the main truss 1. The hoisting and jacking integrated crown block system 3 is arranged above the main truss 1 and is used for hoisting bridge structures and realizing self-climbing of a crane. The hoisting and jacking integrated crown block system 3 comprises a hoisting crown block frame body 31, a continuous climbing mechanism 32, a hoisting frame body 33 and a hoisting tool 34, wherein the hoisting crown block frame body 31 can move along the length direction of the main truss 1 so as to transport a hoisted bridge structure to the top of a tower column and lower the structure in a contraposition, the hoisting frame body 33 is arranged on the hoisting crown block frame body 31, and the hoisting machine system 4 is connected with the hoisting tool 34 through the hoisting frame body 33 so as to hoist the structure by using the hoisting tool 34.

The hoisting and jacking integrated self-climbing crane is mainly used for construction of cable towers, so that a lifted bridge structure is a tower column segment or a tower column cross beam.

Specifically, the main truss 1 adopts two-piece truss structure, and it includes two parallel arrangement's truss and connects the middle parallel connection of two trusses, main truss 1 sets up the opening along its length direction's at least one distolateral, just the opening of main truss 1 sets up downwards towards its central line slope, so that jack-up jacking integral type overhead traveling crane system 3 follows the opening part hoist and mount bridge structures of main truss 1 extremely inside and transport to corresponding station of transferring of main truss 1. The top and the bottom of main truss 1 all set up the track (not mark) to be used for leading with the removal of locating the slip support frame 2 of 1 bottom of main truss 1 top jack-up integral type overhead traveling crane system 3 respectively.

Locate main truss 1 bottom the support frame 2 that slides is the main bearing structure who connects this application hoist and column, support frame 2 that slides supports body frame 21, the walking 22 and the fixed articulated bearing 23 of tower wall including sliding, the length direction perpendicular to of the support body frame 21 that slides the length direction of main truss 1, the walking 22 that slides is located between main truss 1 and the support body frame 21 that slides, in order to pass through the walking 22 top that slides supports body frame 21 and follows the length direction of main truss 1 removes. The walking of sliding 22 includes two sliding seat 221 and locates the hydro-cylinder 222 that slides between two sliding seat 221, two sliding seat 221 all with be located the track cooperation of 1 bottom of main truss, two all be equipped with on the sliding seat 221 be used for with the main truss 1 grafting complex is inserted and is pulled out the round pin, and is two in sliding seat 221, be close to in sliding seat 221 and the support body frame body 21 that slides of support body frame body 21 is connected, then through two sliding seat 221 and the cooperation of hydro-cylinder 222 that slides, can realize sliding support frame 21 is followed the length direction of main truss 1 removes.

The tower wall fixing and hinging support 23 is hinged to one side, close to the tower column, of the sliding support main frame body 21, the tower wall fixing and hinging support 23 comprises a fixing seat 231 and a connecting seat 232 which are hinged to each other, the fixing seat 231 is installed on the sliding support main frame body 21, and the connecting seat 232 can be connected and fixed with a connecting piece pre-embedded in the side wall of the tower column through a high-strength bolt.

Preferably, in this embodiment, the two groups of the sliding support frames 2 are respectively arranged on two sides of the tower column, the main truss 1 is supported by the two groups of the sliding support frames 2, and the two sliding steps 22 of each group of the sliding support frames 2 are arranged in two corresponding to the two-piece truss structure of the main truss 1, so that the two groups of the sliding steps 22 push the sliding support frames 2 to approach or leave the tower column along the length direction of the main truss 1. Meanwhile, the main sliding support frame 21 is connected with the tower columns by arranging four tower wall fixing hinged supports 23, so that the connection strength between the main sliding support frame 21 and the tower columns is ensured.

The main sliding support frames 21 of the two groups of sliding support frames 2 on the two sides of the tower column are driven by the sliding footrests 22 to be close to the tower column, and the tower wall fixing hinged supports 23 are anchored with the tower column, so that the whole crane load of the crane of the application is transmitted to the tower column through the sliding support frames 2 and then the tower wall fixing hinged supports 23, and the crane of the application is effectively supported.

The hoisting and jacking integrated crown block system 3 can realize self-climbing of the crane and hoisting of a bridge structure, namely, the main truss 1 can climb to the top of an installed tower column segment under the driving of the hoisting and jacking integrated crown block system 3 so as to install the next tower column segment. The sliding support frame 2 is lifted along with the lifting of the main truss 1, and under the condition that the crane hoists the bridge structure, the tower wall fixed hinged supports 23 of the sliding support frame 2 are anchored with the side walls of the tower columns; under the condition that the crane climbs, the constraint between all the tower wall fixed hinged supports 23 and the tower column is released, and the sliding support frame 21 is driven to be far away from the tower column through the sliding walking track 22, so that the lifting operation of the main truss 1 is facilitated.

Jack-up jacking integral type overhead traveling crane system 3 can follow the length direction removal of girder 1, jack-up jacking integral type overhead traveling crane system 3 includes jack-up overhead traveling crane support body 31, climbing mechanism 32 in succession, lifts by crane support body 33 and hoist 34, jack-up overhead traveling crane support body 31 with be equipped with actuating mechanism 35 between the girder 1, actuating mechanism 35 is including drive seat and actuating cylinder, the drive seat with the track cooperation at 1 top of girder, just be equipped with on the drive seat and be used for pegging graft the complex plug pin with the track, actuating cylinder locates the drive seat with between the overhead traveling crane support body 31, through actuating cylinder intermittently stretches out and draws back in order to promote jack-up overhead traveling crane support body 31 follows the length direction removal of girder 1.

Further, the crane crown block frame body 31 spans the two trusses of the main truss 1, and two sets of driving mechanisms 35 are arranged between the crane crown block frame body 31 and the main truss 1 corresponding to the two trusses, so that the transverse moving stability of the crane crown block frame body 31 is improved.

The continuous climbing mechanism 32 is disposed in the crane block frame 31, and includes a lifting upright post 321 and a climbing cylinder 322, a through hole (not shown) is disposed on the crane block frame 31, the lifting upright post 321 penetrates the crane block frame 31 from the through hole, a plurality of insertion holes (not labeled) are disposed on the lifting upright post 321 along a length direction thereof, the climbing cylinder 322 is disposed on the crane block frame 31, and an extending end of a piston rod thereof is provided with an insertion pin which is inserted and matched with the insertion hole of the lifting upright post 321. Moreover, at least two sets of climbing cylinders 322 are provided corresponding to each lifting upright 321, and the lifting uprights 321 can be pushed to move along the length direction (vertical direction in this embodiment) by the alternate extension and retraction of the climbing cylinders 322 of different sets.

Preferably, four lifting columns 321 are provided in this embodiment, four through holes are correspondingly formed in the hoisting crown block body 31, connecting lines of the four through holes are rectangular, the through holes are square holes, and the lifting columns 321 are square columns, so that four groups of climbing cylinders 322 are provided corresponding to four surfaces of the square columns in this embodiment, and the four groups of climbing cylinders 322 are provided along the peripheries of the through holes. In addition, the four groups of climbing cylinders 322 form two-by-two teams, and the two groups of climbing cylinders 322 of the same team are synchronous in extension and retraction and are oppositely arranged corresponding to the opposite surfaces of the lifting upright columns 321. It should be noted that each group of climbing cylinders 322 includes at least one cylinder for pushing the lifting column 321, and the more the number of cylinders is, the higher the supporting capability of the lifting column 321 is. Therefore, in this embodiment, each group of the climbing cylinders 322 includes three cylinders arranged side by side for synchronous extension, and the end of the extending end of the piston rod of the three cylinders is provided with a mounting seat (not labeled), and the plug pin in plug-in fit with the lifting upright 321 is fixed on the mounting seat.

Further, four still be equipped with the flat antithetical couplet mechanism 36 that goes up and down between two adjacent of lift stand 321, the flat antithetical couplet mechanism 36 that goes up and down includes flat antithetical couplet 361 and double-end lift cylinder 362, the both ends of flat antithetical couplet 361 all are equipped with double-end lift cylinder 362, double-end lift cylinder 362 has the telescopic piston rod in both ends, and the end that stretches out of its double-end piston rod all be provided with can with the lift stand 321 grafting complex plug pin. The lifting horizontal connection 361 is used for connecting two adjacent lifting upright posts 321, so that the lifting upright posts 321 can be lifted synchronously.

The hoisting frame body 33 is respectively provided at two ends of the hoisting crown block body 31, and the hoisting frame body 33 can move along the length direction relative to the hoisting crown block body 31. Specifically, a traverse cylinder 332 which extends and retracts along the length direction of the crane tower body 31 is arranged on the crane tower body 31, the extending end of a piston rod of the traverse cylinder 332 is connected with the crane tower body 33, meanwhile, guide rails (not shown) which extend along the length direction of the crane tower body 31 are arranged at two ends of the crane tower body 31, and the crane tower body 33 is provided with guide grooves (not shown) which are matched with the guide rails, so that the position of the crane tower body 33 on the crane tower body 31 is adjusted through the traverse cylinder 332.

Set up gyro wheel 331 on the lifting frame body 33, the hoist hoisting system 4 of this application mainly adopts hoist 41 collocation wire rope 42 to carry out the hoist and mount operation, the wire rope 42 of hoist hoisting system 4 passes through be connected with hoist 34 behind the gyro wheel 331 on the lifting frame body 33, promptly lifting frame body 33 is to wire rope 42's the effect that plays the direction, then can adjust the position that wire rope 42 transferred through the position of sideslip hydro-cylinder 332 regulation lifting frame body 33 to the adaptation is connected with different specification hoists 34. The lifting appliance 34 comprises a lifting frame and a lifting claw 342, the lifting claw 342 is arranged below the lifting frame and used for being connected with a bridge structure to be lifted, and the lifting frame is provided with a movable pulley block 343 and used for being connected with a steel wire rope 42 passing through the lifting frame body 33. Two sets of movable pulley blocks 343 are disposed at two ends of the lifting appliance 34 and respectively correspond to the rolling wheels 331 of the two lifting frame bodies 33 on the lifting crown block body 31, so that the winch lifting system 4 is provided with two sets of steel wire ropes 42 to be connected with the movable pulley blocks 343 at two ends of the lifting frame through the rolling wheels 331 of the two lifting frame bodies 33, that is, the steel wire ropes 42 lift the lifting frame by connecting the movable pulley blocks 343 at two ends of the lifting frame, thereby improving the lifting stability and the lifting construction safety.

The hanger includes an upper hanging beam 3411 and a lower hanging frame 3412, the movable pulley block 343 is disposed at both ends of the upper hanging beam 3411, and the hanging claws 342 are disposed at the bottom side of the lower hanging frame 3412. The lower suspension bracket 3412 is an H-shaped frame, the lifting device 34 is disposed at each of four corner ends of the lower suspension bracket 3412, and each of the lifting claws 342 is a four-claw lifting claw. In addition, the lower suspension bracket 3412 is further provided with a hydraulic cylinder 344 corresponding to each lifting claw 342, the hydraulic cylinder 344 pushes the lifting claw 342 to slide on the lower suspension bracket 3412, so that the position of the lifting claw 342 is changed according to the position of a lifting point of a bridge structure to be lifted, that is, the lifting appliance 34 is an adjustable lifting appliance 34, so as to adapt to the lifting operation of bridge structures with different specifications.

The upper hanging beam 3411 is disposed above a middle connecting beam of the lower hanging bracket 3412, a rotating structure 345 is disposed between the upper hanging beam 3411 and the lower hanging bracket 3412, the rotating structure 345 includes an inner ring 3451 and an outer ring 3452 which are coaxially disposed, the inner ring 3451 and the outer ring 3452 are relatively rotatable, the outer ring 3452 is bolted to the upper hanging beam 3411, the inner ring 3451 is bolted to the lower hanging bracket 3412, the upper hanging beam 3411 is provided with a motor 3453, the motor 3453 drives the inner ring 3451 to rotate, the inner ring 3451 is provided with a full circle of internal teeth, an output shaft of the motor 3453 is provided with a gear engaged with the internal teeth, the motor 3453 drives the upper hanging beam 3411 and the lower hanging bracket 3412 to relatively rotate through the gear engagement when rotating, and the motor 3453 has a self-locking function, and when the motor 3453 stops rotating, the relative position of the upper hanging beam 3411 and the lower hanging bracket 3412 is fixed. The utility model provides a gallows sets up revolution mechanic 345 at last hanging beam 3411 and between lower hoist 34, can be applicable to along the condition of the gradual widen of following the bridge at the pylon segment section, adopts the minor face to be located along the bridge to during the hoist and mount, long limit is located the cross bridge to, promotes to install the position after rotatory 90 again and installs, otherwise need install initiative stull and interim crossbeam between the cable-stayed tower to the pylon cross bridge outside, avoid its interference pylon and crossbeam installation.

The hoisting system 4 includes a hoisting machine 41, a steel wire rope 42 and a rope winding drum 43, and since the spatial arrangement position of the hoisting system is limited, in this embodiment, the hoisting machine 41 is disposed on the crane frame body 31 and moves therewith, and the rope winding drum 43 is disposed at the bottom of the tower. Preferably, the friction type winding machine 41 is preferably adopted in the present application, and the steel wire rope 42 of the friction type winding machine 41 in operation only passes through and is not wound on the winding machine 41, so that the winding machine 41 can be separated from the rope take-up reel 43. One end of the steel wire rope 42 is wound at the rope winding drum 43, and the other end of the steel wire rope passes through the winch 41 and then passes through the roller 331 on the lifting frame body 33 to be connected with the movable pulley block 343 on the lifting appliance 34, so that the lifting appliance 34 is pulled to be lifted by the friction force between the winch 41 and the steel wire rope 42.

In this embodiment, the hoisting capacity of each set of hoisting machine system 4 is 300 tons, and the diameter of the steel wire rope 42 is

Model number optimization

The breaking force of the steel wire rope 42 is 99.4 tons, and the lifting speed under the rated load is 6m/min. The total length of the steel wire rope 42 is 3000m multiplied by 4, the self weight of the single friction type winch 41 is 30 tons, and the self weight of the single rope collecting machine is 10 tons.

In addition, after the crane of the present application finishes hoisting the current tower column segment, the continuous climbing mechanism 32 may be used to climb to the top of the current tower column segment, at this time, the hoist 34 is kept fixed to the top of the tower column segment, and the climbing cylinder 322 is used to lower the lifting column 321 so as to anchor the bottom of the lifting column to the top of the hoist 34. The lifting appliance 34 is a double-anchor type lifting appliance 34, four groups of anchor seats 346 are arranged at positions corresponding to four lifting columns 321, each anchor seat 346 is provided with an insertion and extraction pin, and when the bottoms of the lifting columns 321 are abutted to the lifting appliance 34, the insertion and extraction pins are inserted into insertion holes at the bottoms of the lifting columns 321 to realize anchoring between the lifting columns 321 and lifting appliance 34 beams. In addition, at least two anchor seats 346 are provided for each lifting column 321 in each set of anchor seats 346, and the connection strength between the lifting column 321 and the spreader 34 is ensured by anchoring at least two points of the lifting column 321. In this embodiment, four anchor seats 346 are arranged in each set of anchor seats 346 to anchor four sides of each lifting column 321 in a one-to-one correspondence, so that the anchoring stability between the lifting column 321 and the spreader 34 is high.

Next, the crane frame body 31 is caused to ascend along the lifting column 321 by the telescopic operation of the ascent cylinder 322 on the crane frame body 31, and the crane frame body 31 stops after ascending in place. The main truss 1 can climb along with the climbing of the crane frame body 31, before the main truss 1 climbs along with the crane frame body 31, the anchoring between the sliding support frame 2 and the tower column should be firstly released, the sliding support frame 2 slides out for a certain distance to be completely separated from the tower column, so that the main truss 1 and the tower column are relatively free, and at the moment, the load of the crane is transferred to the top of the tower column through the lifting upright column 321 and the lifting appliance 34 to bear the load. Or, before the crane crown block body 31 climbs, the limitation of the crane crown block body 31 and the main truss 1 is removed, after the crane crown block body 31 climbs in place, the limitation of the wire rope 42 and the lifting tool 34 is removed, the temporary lifting tool 34 is arranged at the end part of the wire rope 42 for lifting, the lifting frame bodies 33 at the two ends of the crane crown block body 31 are adjusted to adjust the position of the temporary lifting tool 34 to be connected with the main truss 1, at this time, the connection of the sliding support frame 2 and the tower column is removed, the main truss 1 and the sliding support frame 2 are lifted to the lower position of the crane crown block body 31 by using the temporary lifting tool 34, the crane crown block body 31 is connected with the main truss 1, and the sliding support frame 2 is anchored with the tower column segment which is installed at the current top, so that the self-climbing of the crane of the present application is completed.

The self-climbing crane mainly depends on the cooperation of the climbing oil cylinder 322 and the plug pins, adopts a multipoint synchronous control system to ensure the consistency and the synchronism of the actions of all the lifting oil cylinders, adopts a mature load sensitive electro-hydraulic proportional multi-way valve on the aspect of a hydraulic system design in the aspect of the synchronous control system, and can realize point-to-point independent control of all the lifting oil cylinders. In the lifting process, the electric control system can acquire the position of a piston rod of the oil cylinder according to a displacement sensor arranged on the oil cylinder, correspondingly adjust the oil supply amount of each proportional valve in real time according to the difference of the position of the oil cylinder, and realize the synchronous control of the whole process on all the lifting oil cylinders by adopting a PID algorithm (namely a control algorithm integrating three links of proportion (proportionality), integral (integral) and derivative (derivative).

To sum up, the lifting jacking integrated self-climbing crane of the application integrates lifting and self-climbing, large-scale lifting equipment does not need to be arranged additionally, the problems that the existing tower crane is adopted to hoist structures, the cost is high and the progress is slow are solved, after construction of a single-section structure is completed, the crane of the application is lifted to the next section of hoisting position through a continuous lifting structure, the sequential circulation is realized, the process operation is simple, the construction time is saved, and the construction efficiency is improved.

Moreover, the hoisting and jacking integrated self-climbing crane is not only suitable for cable tower construction with a single tower column structure, but also can meet the construction requirement of a double-tower-column cable tower.

Specifically, during the construction of the cable tower of single-tower column structure, main truss 1 erects at the top tower column segment that this tower column has satisfied the requirement of construction height, through set up one set of jack-up jacking integral type overhead traveling crane system 3 on the main truss 1 can accomplish the hoist and mount operation of tower column segment.

Therefore, the using method of the hoisting and jacking integrated self-climbing crane comprises the following steps:

and S001, arranging a lifting and jacking integrated self-climbing crane at the top of the tower column meeting the construction height requirement. The hoisting and jacking integrated self-climbing crane is characterized in that a main truss 1 of the hoisting and jacking integrated self-climbing crane is erected at the top of a single tower column along a transverse bridge direction, two groups of sliding support frames 2 are arranged along the bridge direction and arranged on two sides of the tower column, and a set of hoisting and jacking integrated crown block system 3 and a set of winch lifting system 4 are arranged on the main truss 1.

And S002, hoisting and jacking integrated crown block system 3 and winch lifting system 4 from one end of the main truss 1 in the length direction to lift the steel tower segment to the position above the installed tower column segment for installation.

The main truss 1 is located its length direction's one end and sets up the slope opening to make things convenient for jack-up jacking integral type overhead traveling crane system 3 and hoist lifting system 4 hoist and mount steel tower segment section and enter into main truss 1 and transport, jack-up jacking integral type overhead traveling crane system 3 is controllable in the position on main truss 1, thereby ensures that the steel tower segment section of hoist and mount and the accurate counterpoint of the pylon post of having installed, ensures the installation accuracy of pylon post.

During the period that the steel tower segment is hoisted by the hoisting and jacking integrated crown block system 3 and the winch hoisting system 4, the sliding support frame 2 below the main truss 1 is anchored with the tower column, so that the main truss 1 is ensured to have enough support capacity to realize hoisting operation of the steel tower segment.

And S003, after the installed steel tower segment is completely installed, the hoisting and jacking integrated crown block system 3 is utilized to enable the hoisting and jacking integrated self-climbing crane to move to the top of the currently installed steel tower segment.

The known hoisting and jacking integrated crown block system comprises a hoisting crown block body 31, a continuous climbing mechanism 32, a hoisting yoke body 33 and a lifting appliance 34, wherein the continuous climbing mechanism 32 comprises a lifting upright column 321 and a climbing cylinder 322. When the crane of the present application climbs, the lifting column 321 is moved to abut against the lifting tool 34 anchored at the top of the tower column below the lifting column 321 by the climbing cylinder 322, the bottom of the lifting column 321 and the lifting tool 34 are in anchoring connection by the inserting and pulling pin of the anchoring seat 346, and after the lifting column 321, the lifting tool 34 and the top of the tower column are anchored, the climbing cylinder 322 with the crown block 31 climbs to the top of the lifting column 321 along the vertical direction. The main truss 1 can climb along with the climbing of the hoisting crown block frame body 31, and in the climbing process, the sliding support frame 2 at the bottom of the main truss 1 is separated from the tower column; or, the hoisting overhead traveling crane frame body 31 and the main truss 1 may be separated first, and after the hoisting overhead traveling crane frame body 31 climbs in place, the main truss 1 is hoisted to the lower part of the hoisting overhead traveling crane frame body 31 by the hoisting frame bodies 33 at the two ends of the hoisting overhead traveling crane frame body 31 matching with the temporary hoists 34 and then connected. It should be noted that, when the main truss 1 is lifted, the sliding support frame 2 at the bottom of the main truss 1 is separated from the tower column, and after the main truss 1 moves to the top of the currently installed steel tower segment, the sliding support frame 2 is anchored with the top of the current tower column, so that the self-climbing of the lifting and jacking integrated self-climbing crane is completed.

And (5) circulating the steps S002 and S003, namely, performing the height connection of the tower column through the circulating operation of the climbing operation of the hoisting steel tower segment and the hoisting and jacking integrated crown block system 3 until the construction of the tower column is finished.

When constructing a cable tower with a double-tower-column structure, the construction of connecting the height of a single tower column needs to be completed, and a cross beam between two tower columns needs to be constructed. Then this application utilizes jack-up jacking integral type to erect from main truss 1 of hoist that climbs on two adjacent pylons that have satisfied the requirement of construction height along the horizontal bridge to earlier when the cable tower of hoist construction double-pylon structure is constructed to hoist jack-up integral type, simultaneously, the support frame 2 that slides corresponds two pylons respectively and is provided with two sets ofly, every group the support frame 2 that slides equally divide and respectively establishes one set in the both sides that correspond the pylon, in order to ensure main truss 1's both ends homoenergetic obtains effective support.

In addition, when the cable tower with a double-tower-column structure is constructed, since the cable tower structure is more complicated than that of a cable tower with a single tower column, a construction operation platform 5 can be arranged on the main truss 1 to facilitate the construction of workers. Construction operation platform 5 includes that the overhead traveling crane operation overhauls platform 51, goes up overhauls platform 52, overhauls platform 53, lateral sliding welded platform 54, vertical welded platform 55 and repair platform 56 down, it locates to go up overhauls platform 52 the top side of main truss 1, overhead traveling crane operation overhauls platform 51 locates on the jack-up overhead traveling crane support body 31, just overhead traveling crane operation platform with it overhauls passageway 57 about being equipped with between the platform 52 to go up, overhaul platform 53 down and locate main truss 1 downside, it also is equipped with passageway 57 about going up to overhaul between platform 52 and the lower maintenance platform 53, passageway 57 about should depend on the bracing setting of main truss 1 to guarantee the structural strength and the stability of passageway 57 about, lateral sliding welded platform 54 sets up along the horizontal bridge, vertical welded platform 55 sets up along the bridge, and lateral sliding welded platform 54 and vertical sliding welded platform are located the pylon top to the pylon segment that waits the pylon hoist to carry out the welding jobs between two pylon segments after the pylon segment top. The repairing platform 56 is correspondingly arranged at the sliding support frame 2 and can be used for repairing the structure of the sliding support frame 2, and an upper channel 57 and a lower channel 57 are arranged between the repairing platform 56 and the longitudinal welding platform 55. This application sets up passageway 57 about between the platform that a plurality of high positions are different and communicates, and faces the high protection guardrail of limit protection and all adopt 1.5m to make things convenient for the workman to reach each construction operation platform 5 through passageway 57 from top to bottom, can accomplish the operation of different positions.

Therefore, when the crane is used for constructing a cable tower of a double-tower-column structure, the construction operation platform 5 is additionally arranged on the main truss 1, and the construction operation platform 5 and the main truss 1 are jointly designed, so that the construction operation platform 5 can be driven by the continuous climbing mechanism 32 to lift along with the main truss 1, and a conventional annular operation platform does not need to be additionally arranged.

In addition, to the cable tower of two tower column structures, set up two sets of jack-up jacking integral type overhead traveling crane systems 3 on the main truss 1 of this application, can carry out the synchronous construction of two pylons for the efficiency of construction then, and the cable tower of two tower column structures is still including the crossbeam, usable two sets jack-up jacking integral type overhead traveling crane systems 3 lifts by crane the crossbeam and installs.

Referring to fig. 9, the construction method of the double-tower cable tower includes the following steps:

firstly, a hoisting and jacking integrated self-climbing crane is arranged between two adjacent tower columns in the transverse bridge direction and meets the requirement of construction height.

The hoisting and jacking integrated self-climbing crane comprises a main truss 1, a sliding support frame 2, a hoisting and jacking integrated crown block system 3, a winch lifting system 4 and a construction operation platform 5, wherein the main truss 1 is erected between two adjacent tower columns meeting the construction height along the transverse bridge direction, the sliding support frame 2 is positioned below the main truss 1 and is provided with two groups corresponding to the two tower columns respectively, and the sliding support frame 2 is anchored with a top tower column section so as to support the main truss 1 and the upper structure of the main truss.

Be equipped with two sets on the main truss 1 jack-up jacking integral type overhead traveling crane system 3, just jack-up jacking integral type overhead traveling crane system 3 can follow the length direction of main truss 1 removes, jack-up jacking integral type overhead traveling crane system 3 includes jack-up overhead traveling crane support body 31, continuous climbing mechanism 32, jack-up support body 33 and hoist 34, jack-up overhead traveling crane support body 31 is located on the main truss 1 and be equipped with between the two and be used for promoting jack-up overhead traveling crane support body 31 is followed the actuating mechanism 35 that 1 length direction of main truss removed, continuous climbing mechanism 32 locates on the jack-up overhead traveling crane support body 31 in order to be used for with jack-up overhead traveling crane support body 31 promotes along vertical direction, jack-up support body 33 is followed the length direction of jack-up overhead traveling crane support body 31 removes, hoist lift system 4 passes through jack-up support body 33 with hoist 34 is connected in order to be used for promoting hoist 34 and promotes the steel tower festival section.

And hoisting the steel tower segment by using the hoisting and jacking integrated self-climbing crane to connect the height of the tower column.

Specifically, the hoisting and jacking integrated crown block system 3 and the winch lifting system 4 are used for hoisting the steel tower segment to the top of the installed tower column segment to be heightened, after the current top tower column segment is installed, the continuous climbing mechanism 32 of the hoisting and jacking integrated crown block system 3 is reused for moving to the top of the installed steel tower segment from the currently connected steel tower segment, and then hoisting of the next steel tower segment is carried out.

The self-climbing step of the crane on the double-tower cable tower is the same as the self-climbing step of the crane installed on the single-tower cable tower, that is, the lifting appliance 34 for hoisting the steel tower segment is anchored at the top of the currently installed steel tower segment, the bottom of the lifting upright 321 of the continuous climbing mechanism 32 is abutted against the lifting appliance 34 anchored at the top of the installed steel tower segment under the driving of the climbing cylinder 322, and the lifting upright 321 and the lifting appliance 34 are locked by the anchoring seat 346 and the plug pin arranged at the top of the lifting appliance 34. After the crane crown block frame body 31 climbs to the target height of the lifting upright column 321 under the driving of the climbing oil cylinder 322, the fixing of the sliding support frame 2 and the tower column is released, the main truss 1 is lifted to the lower part of the crane crown block frame body 31 by using the winch lifting system 4, and then the sliding support frame 2 is anchored with the tower column segment installed at the current top part through the tower wall fixing hinged support 23.

It should be noted that the self-climbing of the crane of the double-tower cable tower needs to be performed after the steel tower segments of the two towers are symmetrically installed and welded, and the self-climbing systems on the two towers need to operate synchronously to ensure the straight ascending of the main truss 1. Meanwhile, the hoisting and jacking integrated self-climbing crane for double-tower-column cable tower construction further comprises a construction operation platform 5, the construction operation platform 5 is attached to the main truss 1, and the self-climbing system also drives the construction operation platform 5 to climb when lifting the main truss 1.

And in the process of connecting the tower columns to be high, the hoisting and jacking integrated crown block system 3 and the winch lifting system 4 are used for hoisting the temporary cross beam to different height positions of the tower columns from bottom to top to connect the two tower columns.

And after the two tower columns are constructed to the target height, sequentially hoisting the upper cross beam and the lower cross beam to the specified height position from top to bottom and connecting the upper cross beam and the lower cross beam with the two tower columns.

Specifically, after the tower column is constructed to the preset height of the tower top, an assembling support is arranged at the position of the tower bottom, and the height position of the assembling support is consistent with the height of an installation station of the lower cross beam. Hoisting the beam sections to the assembling support by using the hoisting and jacking integrated self-climbing crane, assembling to form an integral upper beam, and integrally hoisting the upper beam to an upper beam installing station by using the hoisting and jacking integrated self-climbing crane and installing and fixing the upper beam to complete the installation and construction of the upper beam.

And then hoisting the beam sections of the self-climbing crane by three sections by using the hoisting and jacking integrated self-climbing crane, firstly hoisting the beam sections at two ends of the lower beam for installation, and finally hoisting the middle beam section for folding the lower beam so as to complete the installation and construction of the lower beam.

And finally, sequentially removing the temporary steel cross beam and the lifting and jacking integrated self-climbing crane to complete the construction of the double-tower-column steel cable tower.

After the construction of the tower columns and the cross beams of the double-tower-column cable tower is completed, an assembling support for assembling the cross beams, a temporary cross beam for connecting the two tower columns and a lifting and jacking integrated self-climbing crane are sequentially detached from bottom to top.

When the hoisting and jacking integrated self-climbing crane is dismantled, the hoisting and jacking integrated crown block system 3 is manufactured at the top of the tower column, the main truss 1 is hoisted by the winch hoisting system 4, and the connection between the sliding support frame 2 at the bottom of the main truss 1 and the tower column is released. Then, the main truss 1 is integrally lowered to the ground by using the winch lifting system 4, and then the main truss 1 is disassembled and dismantled by using the crawler crane.

And the hoisting and jacking integrated crown block system 3 positioned at the top of the tower column is dismantled by the aid of the tower crane, so that dismantling of the hoisting and jacking integrated self-climbing crane is completed.

The foregoing is only a few embodiments of the present application and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present application, and that these improvements and modifications should also be considered as the protection scope of the present application.

Claims (7)

1. A continuous lifting mechanism is characterized in that the continuous lifting mechanism is arranged on a crane frame body and used for lifting the crane frame body along the vertical direction, and comprises a lifting upright post and a climbing oil cylinder;

the lifting upright column is inserted into a reserved through hole of the hoisting crown block frame body and can move relative to the hoisting crown block frame body, a plurality of insertion holes distributed along the length direction of the lifting upright column are formed in the lifting upright column, and the bottom of the lifting upright column is anchored at the top of the installed tower column section;

the climbing oil cylinder is fixed on a crane crown block frame body, and the extending end of a piston rod of the climbing oil cylinder is provided with an inserting pin which enters and exits the inserting hole of the lifting upright post so as to push the lifting upright post to move along the length direction of the lifting upright post.

2. The continuous lifting mechanism according to claim 1, wherein said climbing cylinders are provided in at least two sets corresponding to each of said lifting columns, and different sets of said climbing cylinders extend and retract alternately to push said lifting columns to move along the length direction thereof.

3. The continuous lifting mechanism according to claim 2, wherein the lifting column is provided as a square column, four sides of the lifting column are provided with insertion holes, and the climbing cylinders are provided in four groups corresponding to the four sides of the lifting column.

4. The continuous lifting mechanism according to claim 3, wherein four sets of said climbing cylinders are grouped in pairs, two sets of said climbing cylinders in the same group are synchronized in extension and retraction, and said two sets of said climbing cylinders are correspondingly located on opposite sides of said climbing cylinders so as to be opposite to each other.

5. The continuous lifting mechanism according to claim 4, wherein each group of climbing cylinders comprises three cylinders which are lifted synchronously, and the extending ends of the piston rods of the three cylinders are provided with mounting seats for mounting plug pins.

6. The continuous lifting mechanism according to claim 1, wherein four lifting columns are provided corresponding to four corner ends of a crane block body.

7. The continuous lifting mechanism according to claim 6, wherein a lifting parallel connection mechanism is arranged between two adjacent lifting columns, the lifting parallel connection mechanism comprises a parallel connection and a double-head lifting cylinder, the two ends of the parallel connection are respectively provided with the double-head lifting cylinder, and the extending ends of the two piston rods of the double-head lifting cylinder are respectively provided with a plug pin which can be in plug fit with the lifting columns.

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