CN103058072A - Large luffing jib tower crane introduction mechanism - Google Patents

Abstract

The invention relates to the field of engineering machinery, and discloses a large-scale boom tower crane introduction mechanism comprising: a bent introduction beam, a pull rod I, a platform, an electric introduction trolley, a special hook, and a special spreader. The introduction trolley of the present invention is driven by a three-in-one deceleration motor. Compared with the traditional introduction mechanism, the electric introduction trolley must always be placed on the introduction beam because it needs power supply; During the introduction of the standard section, the special spreader and the standard section are placed on the electric introduction trolley, which solves the problem that the standard section of the traditional introduction mechanism is not easy to introduce; the invention adopts the bending method in the introduction of the beam, which effectively solves the problem of the introduction of the beam by the traditional introduction mechanism. Problems such as easy interference with the hoisting wire rope expand the working range of the tower crane and improve the safety of the tower crane.

Description

Introduction mechanism of a large boom tower crane

technical field

The invention relates to the field of engineering machinery, in particular to an introduction mechanism of a large-scale movable arm tower crane.

Background technique

At present, my country's super high-rise buildings are in the stage of rising and developing, and China's super high-rise building height records are constantly being refreshed every year. After entering the 21st century, super high-rise buildings have sprung up one after another. In the next 10 to 15 years, China will form a huge market for super high-rise buildings.

At the same time, electric power resources are the foundation of industrial production and people's life. my country lacks oil and water conservancy resources. Therefore, thermal power generation will be the focus of my country's economic construction for a long time. The key and difficult point of thermal power construction is boiler installation, including boiler plant steel structure, internal equipment, and peripheral facilities. The boiler island is the tallest building in the thermal power plant except for the chimney. It has the largest volume in the construction of the power plant and is difficult to install.

In order to meet the needs of super high-rise construction projects and thermal power construction, luffing jib tower cranes are developing towards large-scale, the working range is getting larger and larger, and the steel structure of the tower itself is getting heavier and heavier. As the height of the building increases, external climbing tower cranes usually need to be lifted and added to meet further construction needs.

For large swing jib tower cranes, there are two major problems if the traditional introduction mechanism is used when jacking and adding joints. On the one hand, the traditional introduction mechanism is driven by manpower, but the large volume and mass of the tower body of the large-scale luffing jib tower crane cannot be pulled by the operator, which makes it difficult to introduce the standard section, and it is not easy to pull out the standard section during the disassembly process. On the other hand, when the luffing jib tower crane works with a short jib length and a small range, the hook of the tower crane is easy to interfere with the imported beam, causing the lifting wire rope to wear and bring a series of hidden dangers to construction safety. In addition, the size of the imported beam is too large, which will bring inconvenience to processing, assembly and transportation.

Figure 1 shows a schematic diagram of a traditional introduction mechanism. It is composed of imported beam 1, pull rod 2, platform 3, imported trolley 4 and hook 5. There is a track made of section steel on it for the introduction of trolleys to walk. The disadvantages of this scheme are: (1) Human drive is adopted in the introduction process of the standard section. When the steel structure of the tower crane itself is heavy, the standard section cannot be introduced; (2) The introduction beam cannot be bent, and when the jib tower crane When working under the short arm length, the suspension hook and the hoisting wire rope are easy to interfere with the introduction beam, which poses a safety hazard; (3) the introduction beam is too long, which is inconvenient for installation and transportation.

Contents of the invention

The purpose of the present invention is to provide a large-scale boom tower crane introduction mechanism in order to solve the technical problems of the above-mentioned traditional introduction mechanism, which can not only solve the problems of difficult introduction of standard joints, poor operation safety and convenience of construction personnel, but also It can solve the problem that the hoisting wire rope easily interferes with the imported beam when the tower crane is working in a small range.

In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a large-scale boom tower crane introduction mechanism is provided, including: bending type introduction beam 6, pull rod I7, platform 8, electric introduction trolley 9, special hook 11 , special spreader 10;

The bent-type introduction beam 6 further includes: a front beam 13 and a rear beam 14, which are connected by a pin 15 and detachably connected between the two; the upper end of the bend-type introduction beam 6 is provided with a platform 8, There is a hinge ear at the middle position, and a travel limit plate of the electric introduction trolley is provided at the bottom, and the bending type introduction cross 6 is connected with the stroke limit plate of the electric introduction trolley by bolts, which can be disassembled;

One end of the tie rod I7 is hinged to the lower support 12 of the tower crane, and the other end is hinged to the bent-type introduction beam 6;

The electric introduction trolley 9 is a driving device for introducing the standard section 20, further comprising: 2 three-in-one reduction motors 16, trolley frame 17, driving wheel 18, driven wheel 19; three-in-one reduction motor 16 passes through the method Blue is connected with trolley frame 17, and driving wheel 18 is connected with drive shaft on the reduction motor by flat key, and driven wheel 19 is positioned on trolley frame 17 by end cover, rolling bearing, threaded shaft and round nut, and trolley frame 17 is provided with With positioning slot;

The special spreader 10 is a device used to lift the standard section 20 and place it on the electric introduction trolley 9, and further includes: a cylindrical block 23, a positioning side plate 22, and an ear plate 21; the inner side of the upper end of the positioning side plate 22 is provided with a cylinder Block 23, the outer side is provided with hook hanging structure 26, and cylindrical block 23 is placed in the positioning groove of trolley frame 17, and both sides are positioned by positioning side plate 22;

The special-purpose hook 11 is a structure used for hoisting the special-purpose sling 10 and the standard joint 20 , and it is hung on the hook-hanging structure 26 .

The beneficial effects of the present invention are: (1) The introduction trolley of the present invention is driven by a three-in-one reduction motor. Compared with the traditional introduction mechanism, the electric introduction trolley must always be placed on the introduction beam because of the need for power supply; The standard section is hoisted when jacking up and adding sections, and the special spreader and standard section are placed on the electric introduction trolley during the introduction of the standard section, which solves the problems that the standard section is not easy to introduce in the traditional introduction mechanism. (2) The present invention adopts the bending method in introducing the beam, which effectively solves the problem that the traditional introducing mechanism interferes with the lifting wire rope when introducing the beam, expands the working range of the tower crane, and improves the safety of the tower crane.

Description of drawings

Figure 1 is a schematic diagram of the traditional introduction mechanism

Fig. 2 is a structural schematic diagram of an introduction mechanism of a large boom tower crane according to the present invention.

Fig. 3 is a side view of the electric introduction trolley of the introduction mechanism of a large boom tower crane according to the present invention.

Fig. 4 is a schematic diagram of a bent-type introduction beam of the introduction mechanism of a large-scale boom tower crane according to the present invention.

Fig. 5 is a perspective view of the electric introduction trolley of the introduction mechanism of a large-scale boom tower crane according to the present invention.

Fig. 6 is a schematic diagram of a special spreader for the introduction mechanism of a large-scale boom tower crane according to the present invention.

Fig. 7 is a schematic diagram of a special hook for the introduction mechanism of a large-scale boom tower crane according to the present invention.

Fig. 8 is a schematic diagram of a standard section introduction process of a large-scale boom tower crane introduction mechanism of the present invention.

Fig. 9 is a schematic diagram of the bending-type introduction beam of the introduction mechanism of a large-scale boom tower crane according to the present invention after bending.

Drawings: 1-Introduction beam, 2-Tie rod, 3-Platform, 4-Introduction trolley, 5-Hook, 6-Bending type introduction beam, 7-Tie rod Ⅰ, 8-Platform Ⅰ, 9-Electric introduction trolley ,10-special spreader, 11-patented hook, 12-lower support, 13-front beam, 14-rear beam, 15-pin shaft, 16-three-in-one geared motor, 17-small frame, 18-drive Wheel, 19-driven wheel, 20-standard section, 21-ear plate, 22-positioning side plate, 23-cylindrical block, 24-adjustable cable, 25-cover frame, 26-hook hanging structure.

Detailed ways

The introduction mechanism of a large boom tower crane according to the present invention includes: a bent introduction beam 6, a pull rod I7, a platform 8, an electric introduction trolley 9, a special hook 11, and a special spreader 10;

The bent-type introduction beam 6 further includes: a front beam 13 and a rear beam 14, which are connected by a pin 15 and detachably connected between the two; the upper end of the bend-type introduction beam 6 is provided with a platform 8, There is a hinge ear at the middle position, and a travel limit plate of the electric introduction trolley is provided at the bottom, and the bending type introduction cross 6 is connected with the stroke limit plate of the electric introduction trolley by bolts, which can be disassembled;

One end of the tie rod I7 is hinged to the lower support 12 of the tower crane, and the other end is hinged to the bent-type introduction beam 6;

The electric introduction trolley 9 is a driving device for introducing the standard section 20, further comprising: 2 three-in-one reduction motors 16, trolley frame 17, driving wheel 18, driven wheel 19; three-in-one reduction motor 16 passes through the method Blue is connected with trolley frame 17, and driving wheel 18 is connected with drive shaft on the reduction motor by flat key, and driven wheel 19 is positioned on trolley frame 17 by end cover, rolling bearing, threaded shaft and round nut, and trolley frame 17 is provided with With positioning slot;

The special spreader 10 is a device used to lift the standard section 20 and place it on the electric introduction trolley 9, and further includes: a cylindrical block 23, a positioning side plate 22, and an ear plate 21; the inner side of the upper end of the positioning side plate 22 is provided with a cylinder Block 23, the outer side is provided with hook hanging structure 26, and cylindrical block 23 is placed in the positioning groove of trolley frame 17, and both sides are positioned by positioning side plate 22;

The special-purpose hook 11 is a structure used for hoisting the special-purpose sling 10 and the standard joint 20 , and it is hung on the hook-hanging structure 26 .

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

Referring to Fig. 2-3, it is a schematic diagram of the introduction mechanism of a large-scale boom tower crane according to an embodiment of the present invention, which mainly includes: bending type introduction beam 6, pull rod I7, platform I8, electric introduction trolley 9, special spreader 10, Special hook 11. The bent-type introduction beam 6 is connected with the lower part of the lower support 12 of the tower crane by a pin shaft, and one end of the pull rod 7 is connected with the introduction beam by a pin shaft, and the other end is connected with the upper hinge lug of the lower support 12 by a pin shaft, forming Stable stress structure.

Referring to Fig. 4, it is a schematic diagram of the bending type introduction beam of the introduction mechanism of a large-scale boom tower crane according to an embodiment of the present invention. Disassembly and transport.

Referring to Fig. 5, it is a schematic diagram of an electric introduction trolley of the introduction mechanism of a large-scale boom tower crane according to an embodiment of the present invention, which is composed of two three-in-one reduction motors 16, a trolley frame 17, a driving wheel 18 and a driven wheel 19. become. The drive wheel 18 is driven by the three-in-one reduction motor 16, and the driven wheel 19 is driven to control the introduction trolley to travel on the curved introduction crossbeam 6 track, thereby controlling the introduction of the standard joint 20.

Referring to FIG. 6 , it is a schematic diagram of a special spreader for the introduction mechanism of a large-scale boom tower crane according to an embodiment of the present invention, which is mainly composed of lug plates 21 , positioning side plates 22 and cylindrical blocks 23 .

Referring to FIG. 8 , it is a schematic diagram of a standard section introduction process of a large-scale boom tower crane introduction mechanism according to an embodiment of the present invention. The standard section 20 is connected to the four ear plates of the special sling 10 through four adjustable cables 24, and then the crane hook lifts the special hook 11, the special sling 10 and a standard section 20, and penetrates into the introduction beam 6 At the front end, the special spreader 10 and the standard section 20 are placed on the electric introduction trolley 9, and the three-in-one reduction motor 16 drives the electric introduction trolley 9 to introduce the standard section 20 into the sleeve frame 25, and finally the installation of the standard section 20 is completed.

Referring to FIG. 9 , it is a schematic diagram of the bending-type introduction beam of the introduction mechanism of a large-scale boom tower crane according to an embodiment of the present invention after being bent. When the jib tower crane is working with a short jib length, the hook is likely to interfere with the bent beam 6. At this time, use the tower crane's own hook and cable to fix the front beam of the bent beam 6, and then pass the Disassemble and bend type to introduce crossbeam 6 upper tie rod 7 and the connection pin shaft of front beam 13, the upper part connection pin shaft 15 between back beam 13 and front beam 14, put down front beam 13 slowly at last, until vertical state. Simultaneously, the upper pull rod 7 of the bending type introduction beam 6 is also slowly put down until the state as shown in the figure. At this point, the electric lead-in dolly 9 should be positioned on the track of the back beam 14 .

The above content is a further detailed description of the present invention in combination with preferred technical solutions, and it cannot be assumed that the specific implementation of the invention is limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, simple deduction and substitutions can be made without departing from the concept of the present invention, which should be regarded as the protection scope of the present invention. the

Claims (1)

1. one kind large-scale arm tower crane is introduced mechanism, it is characterized in that, described a kind of large-scale arm tower crane is introduced mechanism and comprised: folding type is introduced crossbeam (6), pull bar I (7), platform (8), electronic introduction dolly (9), dedicated lifting hook (11), special hanger (10);

Described folding type is introduced crossbeam (6) and is further comprised: front-axle beam (13), the back rest (14), and connect by bearing pin (15) between the two, folding type is introduced crossbeam (6) upper end and is provided with platform (8), midway location is provided with the hinge ear, the bottom is provided with electronic introduction dolly stroke limit plate, and folding type is introduced crossbeam (6) and is bolted with electronic introduction dolly stroke limit plate;

Described pull bar I (7) one ends and tower crane lower support seat (12) are hinged, and it is hinged that the other end and folding type are introduced crossbeam (6);

Described electronic introduction dolly (9) further comprises: 2 three-in-one reducing motors (16), trolley frame (17), driving wheel (18), flower wheel (19); Three-in-one reducing motor (16) is connected with trolley frame (17) by flange, driving wheel 18 is connected with axle drive shaft on the reducing motor by flat key, flower wheel (19) is positioned on the trolley frame (17) by end cap, antifriction-bearing box, threaded shaft and circular nut, and trolley frame (17) is provided with positioning groove;

Described special hanger (10) further comprises: cylindrical piece (23), location side plate (22), otic placode (21); The inboard, upper end of location side plate (22) is provided with cylindrical piece (23), and the outside is provided with suspension hook suspended structure (26), and cylindrical piece (23) is placed in trolley frame (17) positioning groove, and both sides are by location side plate (22) location;

Described dedicated lifting hook (11) hangs on the suspension hook suspended structure (26).

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