CN105293301A - Windproof tower crane - Google Patents

Abstract

The windproof tower crane relates to a kind of construction machinery. The lifting arm and the balance arm are rotatably arranged on the rotary table. There are A fixed groove and B fixed groove, and there are A rope tower and B rope tower on the top of the boom and the balance arm. There is a rope connection between the rope tensioning devices, a rope connection between the rope tower B and the rope tensioning device B, and a counterweight lifting device is installed on the inner top of the jacking sleeve, and the counterweight lifting device can be installed inside the standard section. To move up and down, the balance arm is provided with a counterweight slideway matched with the counterweight lifting device. Compared with the prior art, the present invention not only can quickly install and disassemble the counterweight when a typhoon is coming or other strong wind conditions, but also can bend the boom and balance arm after the counterweight is removed to reduce the wind area and keep the tower The center of gravity is stable.

Description

Windproof Tower Crane

technical field

The invention relates to a construction engineering machine, in particular to a tower crane for a construction site.

Background technique

Tower cranes are referred to as tower cranes for short, also known as tower cranes, which originated in Western Europe. It is a rotating crane with a boom mounted on the top of a tall tower. The tower crane has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes the tower body, the boom and the base, etc. The working mechanism has four parts: lifting, luffing, slewing and walking. The electrical system includes motors, controllers, power distribution cabinets, connecting lines, signals and lighting devices, etc. With the advancement of engineering technology, the floors of buildings are getting higher and higher, making the required tower cranes higher and higher, but too high tower cranes have the problem of poor stability, especially during typhoons in the southeast coast, often An incident in which a tower crane was hung upside down in a typhoon day caused heavy casualties. In addition, all tower cranes need to install counterweights. Most of the counterweights are hoisted to the tower cranes by other cranes. The installation and disassembly are troublesome, which makes the tower cranes unable to realize quick assembly.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a windproof tower crane. The present invention can not only quickly install and disassemble the counterweight when a typhoon is coming or other strong wind conditions, but also can bend the boom and balance the counterweight after the counterweight is removed. Arm to reduce the wind area to keep the center of gravity of the tower stable.

In order to solve the above-mentioned technical problems, the present invention is solved through the following technical solutions: a windproof tower crane, including a base, a tower body, a jacking sleeve frame, a rotary table, a tower top, a boom, a balance arm and a counterweight, the The tower body is built by several standard joints, the jacking frame can move on the standard joints, the rotary platform is set on the top of the jacking frame, and the tower top is set on the rotary On the platform, the lifting arm and the balance arm are rotatably arranged on the rotating platform, the position of the lifting arm and the balance arm are opposite, and several electric telescopic fixing rods are arranged on the lifting arm , the rotating table is provided with a fixing groove matching with the electric telescopic fixing rod of A, and a plurality of electric telescopic fixing rods of B are arranged on the balance arm, and the rotating table is provided with a The B fixing groove matched with the B electric telescopic fixed rod, the top of the boom and the balance arm are respectively provided with a pull rope tower and a B pull rope tower, and the top of the tower is provided with a rope stretching device and a B pull rope tower. Rope stretching device, the A rope pulling tower is connected with the A rope stretching device through the A rope, and the B rope pulling tower is connected with the B rope pulling device through the B rope, and the A counterweight lifting device is arranged on the inner top of the jacking sleeve, and the counterweight lifting device can move up and down inside the standard section, and a counterweight slideway matched with the counterweight lifting device is provided on the balance arm .

In the above technical solution, preferably, the counterweight lifting device includes a lifter, and the lifter is provided with several stay ropes, and the counterweight fixing table is provided on the stay ropes, and the counterweight A fixed platform slideway is arranged on the fixed platform, and several counterweight fixing frames are slidably arranged on the fixed platform slideway, and an alignment device matched with the fixed platform slideway is provided on the described counterweight slideway .

In the above technical solution, preferably, the electric rotating shaft of the alignment device is provided with a connecting plate, and the connecting plate is provided with a The connecting slideway, the connecting plate is also provided with a number of electric telescopic limit columns, and the fixed platform is provided with a limit hole matching the electric telescopic limit columns.

In the above technical solution, preferably, the limiting hole is tapered and gradually narrows inward from the opening.

In the above technical solution, preferably, the counterweight fixing frame is provided with a protective frame, a driving motor and an electric deadlock block.

In the above technical solution, preferably, inward fixing protrusions are respectively arranged on the two side plates of the protective frame, and fixing grooves matching the fixing protrusions are arranged on the counterweight.

In the above technical solution, preferably, several support connecting rods are arranged between the counterweight slideway and the balance arm.

The existing counterweights are hoisted by a crane, and they need to be installed one by one during hoisting. Not only is the installation efficiency low, but the time is long, and it is impossible to disassemble and assemble when the environment is harsh. Once there is a strong wind, the counterweights cannot be disassembled. It is very easy to cause the center of gravity of the tower crane to be unstable, endangering the safety of production and construction. The present invention installs the counterweight through the counterweight lifting device installed inside the tower crane, without external force, and is not affected by the weather. As long as the tower crane can work, the counterweight can be disassembled. Pack. Its main principle uses the internal space of the standard section to form a transportation channel, in which the counterweight is lifted and lowered, and then the counterweight moves to the end of the balance arm through the counterweight slideway on the balance arm after the counterweight is lifted to the top. Finally, it is fixed by the fixing device on the balance arm. The principle when the counterweight is unloaded is the same as when it is installed. First, it is unfixed by the fixing device, then slides to the counterweight lifting device, and finally falls to the ground. In order to achieve this effect, the counterweight lifting device of the present invention includes a lifter, a plurality of stay ropes are arranged on the lifter, a counterweight fixing platform is arranged on the stay rope, a fixing platform slideway is arranged on the counterweight fixing platform, and A counterweight fixing frame is arranged on the table slideway. The counterweight is placed on the counterweight fixed frame, and the fixed platform slideway on the counterweight fixed platform can be aligned with the counterweight slideway. Complete the movement of the counterweight on the balance arm with the slideway of the fixed table. And because the counterweight lifting device can transport a plurality of counterweights or a single counterweight at a time, the tower crane can quickly increase or decrease the breeding during use, and it also avoids the need to replace all the counterweights now. After the counterweight is unloaded, the first electric telescopic fixed rod and the second electric telescopic fixed rod can be loosened, so that the boom and the balance arm can rotate relative to the rotary table. The rotation of the boom and the balance arm is controlled by the A rope stretching device and the B rope stretching device. When the A rope stretching device and the B rope stretching device release the rope, the boom and the balance arm turn down. When the stretching device and the second rope stretching device take in the rope, the jib and the balance arm turn up. The boom and the balance arm stop rotating after they are vertical. At this time, the tower crane has the smallest wind area and the most stable center of gravity, which can keep it from falling down in the windy environment. When it needs to be used, it is only necessary to turn up the lifting arm and the balance arm again, and fix them on the rotary table through the electric telescopic fixed rod A and the electric telescopic fixed rod B.

Compared with the prior art, the beneficial effect of the present invention is that: the present invention can not only quickly install and disassemble the counterweight when a typhoon is coming or other strong wind conditions, but also can bend the lifting arm and the balance arm after the counterweight is removed. To reduce the wind area to keep the center of gravity of the tower stable.

Description of drawings

Figure 1 is a schematic front view of the present invention.

Fig. 2 is a schematic diagram of the contracted state of the present invention.

Fig. 3 is a schematic diagram of the shrinking process of the present invention.

Fig. 4 is a schematic diagram of the use state of the present invention.

Fig. 5 is a schematic diagram of the connecting plate of the present invention.

Fig. 6 is a schematic side view of the counterweight fixing frame of the present invention.

Fig. 7 is a schematic front view of the counterweight fixing frame of the present invention.

Fig. 8 is a schematic diagram of a standard section of the present invention.

Fig. 9 is a schematic diagram of a partially enlarged view at Fig. 4-A of the present invention.

Fig. 10 is a schematic diagram of a partially enlarged view at Fig. 4-B of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 10, the windproof tower crane includes a base 1, a tower body 2, a jacking frame 3, a rotary table 6, a tower top 7, a lifting arm 5, a balance arm 4 and a counterweight 11. The tower body 2 described above is constructed by several standard joints 21, the jacking frame 3 can move on the standard joints 21, the rotating platform 6 is arranged on the top of the jacking frame 3, the The tower top 7 is arranged on the rotary platform 6 .

The rotating table 6 is respectively provided with a lifting shaft 63 and a balance shaft 61, the boom 5 is rotated on the lifting shaft 63, the balance arm 4 is rotated on the balance shaft 61, the boom 5 and the The position of the balance arm 4 is relative, the boom 5 is provided with a plurality of first electric telescopic fixed rods 64, and the rotary table 6 is provided with a first fixed groove matched with the first electric telescopic fixed rods 64, The balance arm 4 is provided with several second electric telescopic fixed rods 63, and the rotary table 6 is provided with a second fixed groove matching with the second electric telescopic fixed rods 63, and the boom 5 and the The top of the top of the balance arm 4 is provided with a rope-staying tower 55 and a rope-staying tower 48 respectively, and the tower top 7 is provided with a rope pulling device 73 and a rope pulling device 71. Said first rope tensioning device 73 is connected by first rope 74, said second rope tower 48 is connected with said second rope tensioning device 71 by second rope connection 72, said first rope 74 and said second rope tensioning device 71 are connected by second rope. The second rope 72 is all twisted into for several steel wire ropes. The top end of the balance arm 4 is rotatably provided with an electric hook 46 , and the electric hook 46 can be hung on the joint between two standard sections 21 . An arc-shaped slideway 53 connected to the lifting slideway 51 is provided at the top of the boom 5 , and a blocking device 54 is provided between the lifting slideway 51 and the arc-shaped slideway 53 . The top ends of the boom 5 and the balance arm 4 are respectively provided with a rope lifter 56 and a rope lifter 47, and the base 1 is provided with a rope lifter 56 and a rope lifter 47 respectively. The second rope lifter 47 is matched with the fixed hook 13 .

The inner top of the jacking sleeve 3 is provided with a counterweight lifting device 8, the counterweight lifting device 8 can move up and down inside the standard section 21, and the balance arm 4 is provided with a counterweight lifting device 8 that is compatible with the counterweight lifting device 8. The counterweight slideway 41 matched with the device 8 , and several supporting connecting rods 42 are arranged between the counterweight slideway 41 and the balance arm 4 . The counterweight lifting device 8 includes a lifter 81, the lifter 81 is provided with a plurality of stay ropes 82, the stay ropes 82 are provided with a counterweight fixing platform 83, and the counterweight fixing platform 83 is provided with a fixed table slideway 84, and several counterweight fixing frames 85 are slidably arranged on the fixed platform slideway 84, and the described counterweight fixing frame 85 is provided with a protective frame body 853, a drive motor 851 and electric locking block 852. The two side plates of the protective frame 853 are respectively provided with inward fixing protrusions 854 , and the counterweight 11 is provided with fixing grooves matching the fixing protrusions 854 . The counterweight slideway 41 is provided with an alignment device 43 matched with the fixed table slideway 84 . The alignment device 43 includes an electric rotating shaft 431, the electric rotating shaft 431 is provided with a connecting plate 432, and the connecting plate 432 is provided with a The connecting slideway 433, the connecting plate 432 is also provided with several electric telescopic limit columns 434, and the fixed platform 83 is provided with a limit hole 86 matching the electric telescopic limit columns 434. The limiting hole 86 is tapered and gradually narrows inward from the opening.

The balance arm 4 is also provided with a fixing device 44 for fixing the counterweight 11 and an airbag device 45 for protecting the counterweight 11. The fixing device 44 includes an electric flip frame 441, and the electric A telescopic cylinder 442 is arranged on the flip frame 441 , and a fixed baffle 443 is arranged on the telescopic cylinder 442 . The air bag device 45 includes a re-inflatable air bag arranged at the lower part of the top end of the balance arm 4451, the air bag 451 is a cuboid with an upward opening, and the air bag 451 and the balance arm 4 are provided with Quick connect interface 452 . The jacking frame 3 is provided with several electric retractors 32, the electric retractors 32 include fixed cables 33, and the base 1 is provided with Hook12.

The pendant tower of the present invention can quickly unload the counterweight 11 and retract the boom 5 and the balance arm 4 before the onset of bad weather. Through this measure, the center of gravity and the wind-receiving surface of the pendant tower can be changed to reduce the risk of damage caused by strong winds. Chance of the crane toppling over in weather conditions. When the weather improves, the counterweight 11 can be quickly repacked and the boom 5 and the balance arm 4 can be launched to allow the hanging tower to go into work immediately. The main principle is to first unload the counterweight 11 to the base 1 through the counterweight lifting device 8 . Firstly, the fixed baffle 443 pressed on the counterweight 11 needs to be released through the fixing device 44, and then the fixed baffle 443 is accommodated by the electric flip frame 441 and the telescopic cylinder 442 and the entire fixing device 44 is kept away from the counterweight slideway 41. Affect the sliding of the counterweight fixing bracket 85. Then the alignment device 43 is rotated so that the connecting slideway 433 on the alignment device 43 communicates with the counterweight slideway 41 . Move the counterweight fixed platform 83 up and down through the elevator 81, so that the counterweight fixed platform 83 is roughly aligned with the connecting plate 432, and then let the electric telescopic limit column 434 on the connecting plate 432 stretch out and insert it on the counterweight fixed platform 83 Inside the limiting hole 86. Because the limiting hole 86 is tapered and gradually narrows inward from the opening, the electric telescopic limiting column 434 can be inserted into the limiting hole 86 when the counterweight fixing table 83 and the connecting plate 432 have a certain deviation. And electric telescopic limit post 434 can allow counterweight fixed platform 83 to be fully aligned with connecting plate 432 after fully stretching in, this moment, connect slideway 433, counterweight slideway 41 and the fixed platform slideway 8 on counterweight fixed platform 83 connected, let the driving motor 851 on the counterweight fixed frame 85 start, and automatically slide to the counterweight fixed platform 83. The electric lock block 852 on the weight fixed mount 85 prevents the counterweight fixed mount 85 from sliding on the fixed platform slideway 8. Finally, the counterweight fixing table 83 is moved onto the base 1 by the lifter 81 .

After the counterweight 11 is moved to the base 1, tighten the first rope 74 between the first rope tower 55 and the first rope tensioning device 73 and the second rope connection between the second rope tower 48 and the second rope tensioning device 71 72, then allow the fixing device between the boom 5, the balance arm 4 and the swivel table 6 to separate, and both unclamp first electric telescopic fixed rod 64 and second electric telescopic fixed rod 63. Slowly turn down boom 5 and balance arm 4 in the rope-laying action of first rope stretching device 73 and second rope stretching device 71 then again. Before the boom 5 and the balance arm 4 rotate downward, the air bag 451 arranged on the balance arm 4 needs to be deflated and bent back to the alignment device 43; The blocking device 54 between the shaped slideways 53 allows the lifting slideway 51 to communicate with the arc-shaped slideway 53, so that the spreader 52 is moved onto the arc-shaped slideway 53 conveniently. After the boom 5 and the balance arm 4 have rotated, the first rope lifter 56 and the second rope lifter 47 arranged at the top end of the boom 5 and the balance arm 4 can lower the connecting ropes, and tie the ropes to the base 1 On the fixed hook 13 on the top, it can prevent that the boom 5 and the balance arm 4 can swing with the wind and have an accident in bad weather. If necessary, the electric pull hook 46 on the balance arm 4 can also be hung on the joint between the two standard sections 21, so that the balance arm 4 can be better fixed.

During installation, it is only necessary to carry out the reverse operation. First, the jib 5 and the balance arm 4 are pulled up again by the first rope stretching device 73 and the second rope stretching device 71, and then by the first electric telescopic fixed rod 64 and the second The electric telescopic fixed rod 63 allows the boom 5 and the balance arm 4 to be fixed with the swivel table 6 . After the fixing is completed, the counterweight fixed frame 85 can be raised again, and the counterweight fixed frame 85 can be moved to the top of the balance arm 4 by connecting the slideway 433 and the counterweight slideway 41 . After the counterweight fixed frame 85 moves to the top of the balance arm 4, the fixed baffle plate 443 on the fixing device 44 resists the counterweight fixed frame 85 to keep the counterweight fixed frame 85 stable. Since the counterweight fixing frame 85 can be equipped with a single counterweight 11, the addition and disassembly of the counterweight 11 can be carried out at any time during operation, so as to keep different force balances between the boom 5 and the balance arm 4. The airbag 451 can be recovered in two ways, one is to deflate directly and then fold together with the balance arm 4 , and the other is to put it down directly through the quick-connect interface 452 . The function of the airbag 451 in the present invention is to allow the airbag 451 to wrap the counterweight 11 if there is an overturning and the falling of the counterweight 11. Although the airbag 451 cannot prevent the falling of the counterweight 11, the airbag 451 can prevent the counterweight from falling. The fragments splashed after the block 11 is broken, prevent these fragments from splashing and hurting people and damaging the machine. Simultaneously, the present invention also sets a limit guide groove 31 on the jacking sleeve frame 3, the limit guide groove 31 can assist the installation of the standard section 21, and a guide bar 22 matched with the limit guide groove 31 is arranged on the top of the standard section 21 , the bottom of the standard section 21 is provided with a matching groove 23 that matches the guide bar 22, and the opening of the limit guide groove 31 is a bell mouth. When the standard section 21 is installed in the jacking sleeve 3, the guide bar 22 can Move along the limit guide groove 31 to make alignment easier. After alignment, the guide groove 31 also fits with the matching groove 23, which facilitates the alignment and fit of the standard section 21 in the upper and lower positions, and can be fixed by using the standard section 21 in the next step.

Claims (7)

1. windproof tower crane, comprise pedestal (1), tower body (2), jacking stock (3), rotating table (6), tower top (7), crane arm (5), equilibrium arm (4) and clump weight (11), described tower body (2) is built by several standard knots (21), described jacking stock (3) can be upper mobile at described standard knot (21), described rotating table (6) is arranged on described jacking stock (3) top, described tower top (7) is arranged on described rotating table (6), described crane arm is provided with lifting slideway (51), the upper slip of described lifting slideway (51) is provided with suspender (52), it is characterized by, described crane arm (5) and described equilibrium arm (4) are rotatably provided on described rotating table (6), described crane arm (5) is relative with described equilibrium arm (4) position, described crane arm (5) is provided with several first electric expansion fixed links (64), described rotating table (6) is provided with the first hold down groove matched with described first electric expansion fixed link (64), described equilibrium arm (4) is provided with several second electric expansion fixed links (62), described rotating table (6) is provided with the second hold down groove matched with described second electric expansion fixed link (62), described crane arm (5) and described equilibrium arm (4) top, top are respectively arranged with first Guyed Towers (55) and second Guyed Towers (48), described tower top (7) is provided with first tubing sections device (73) and second tubing sections device (71), be connected by first rope (74) between described first Guyed Towers (55) with described first tubing sections device (73), be connected by second rope (72) between described second Guyed Towers (48) with described second tubing sections device (71), described first rope (74) and described second rope (48) are all that some steel ropes twist into, in described jacking stock (3), top is provided with counterweight jacking system (8), described counterweight jacking system (8) can move up and down in described standard knot (21) inside, described equilibrium arm (4) is provided with the counterweight slideway (41) matched with described counterweight jacking system (8).

2. windproof tower crane according to claim 1, it is characterized by, described counterweight jacking system (8) comprises lifter (81), described lifter (81) is provided with some stay cords (82), described stay cord (82) is provided with counterweight fixed way (83), described counterweight fixed way (83) is provided with fixed way slideway (84), the upper slip of described fixed way slideway (84) is provided with several clump weight fixed mounts (85), described counterweight slideway (41) is provided with the alignment device (43) matched with described fixed way slideway (84).

3. windproof tower crane according to claim 2, it is characterized by, described alignment device (43) comprises electric rotation shaft (431), described electric rotation shaft (431) is provided with connecting panel (432), described connecting panel (432) is provided with the connection slideway () 433 coordinated with described fixed way slideway (84) and described counterweight slideway (41), described connecting panel (432) is also provided with several electric expansion limited posts (434), described fixed way (83) is provided with the spacing hole (86) matched with described electric expansion limited post (434).

4. windproof tower crane according to claim 3, is characterized by, and described spacing hole (86) is tapered, inwardly reduces gradually from opening part.

5. windproof tower crane according to claim 2, is characterized by, and described clump weight fixed mount (85) is provided with protection framework (853), drive motor (851) and electronic locked piece (852).

6. windproof tower crane according to claim 5, it is characterized by, described protection framework (853) biside plate is respectively arranged with inside fixed lobe (854), described clump weight (11) is provided with the fixed groove matched with described fixed lobe (854).

7. windproof tower crane according to claim 1, is characterized by, and is provided with several supporting linkages (42) between described counterweight slideway (41) and described equilibrium arm (4).