CN204162317U - A kind of double leval jib high pedestal jib crane - Google Patents

Abstract

The utility model discloses a four-link portal crane, which comprises a portal frame system, an arm frame system, a balance weight system, an articulated turntable, a rotary reducer, a machine room and a driver's room. The portal frame system includes a portal frame beam and a door The end beam of the frame; the articulated turntable is hinged with the rod system and the upper rotating column through the pin shaft. The rod system is composed of an angled rod system and a straight rod system. Mechanism platform, boom system is composed of elephant trunk beam, main boom and large pull rod, the main boom is equipped with luffing mechanism, balance weight system is composed of balance beam and small pull rod, and the rotary reducer is installed inside the upper rotating column. On the blue, there is a traveling mechanism under the gantry system; a four-link gantry crane of the utility model has the following advantages: simple structure, safe and reliable, low equipment investment cost, low energy consumption, and high work efficiency.

Description

A four-link portal crane

technical field

The utility model relates to the field of cranes, in particular to a four-link portal crane.

Background technique

At present, with the rapid development of the ocean and inland water transport industry, the domestic control of energy consumption, terminal infrastructure costs, and equipment lightweight is becoming more and more stringent. There is an urgent need for a modern port terminal that can meet the requirements of loading and unloading, while low equipment investment cost and low energy consumption. The loading and unloading equipment; the gantry crane is a kind of jib crane whose bridge frame is supported on the ground track or foundation through the legs on both sides. It runs along the ground track and can pass railway vehicles or other ground vehicles below. A boom-type crane with a heavy device installed on a gantry frame; gantry cranes can be divided into 3 categories according to their uses: ① Portal cranes for loading and unloading: mainly used in ports and open-air stockyards, with grabs or cranes Hook loading and unloading. The lifting capacity generally does not exceed 25 tons, and does not change with the range. The working speed is high, so productivity is often an important indicator. ② Portal cranes for shipbuilding: mainly used for ship berths, floating docks and loading sites, for hull splicing, equipment loading and other hoisting work, using hooks as spreaders. The maximum lifting capacity is up to 300 tons, and the lifting capacity is reduced correspondingly when the range is large. There are multiple lifting speeds, and the lifting speed can be increased when the hoisting weight is light. Some working institutions are also equipped with micro-movement devices to meet installation requirements. The one with a large door seat height can meet the requirements of large lifting height and large-scale operation, but the working speed is low and the operation productivity is not high. ③ Portal cranes for construction and installation: mainly used in hydropower stations for dam irrigation, equipment and prefabricated parts hoisting, etc., generally with hooks. The lifting capacity and working speed are generally between the first two types of cranes. It has the characteristics of good assembly, disassembly and transportation of the whole machine, large depth of lowering of the spreader, and good adaptability to temporary work and work on trestle bridges. Chinese patent ZL201220068704.9 discloses a gantry crane. The crane includes a gantry chassis with a traveling mechanism at the bottom, a cylindrical structure tower located above the gantry chassis, and installed on a cylindrical structure The slewing mechanism at the top of the tower body, the upper jib above the slewing mechanism, the flat jib above the upper jib and the luffing trolley installed on the horizontal track of the flat jib. Because the utility model uses the flat head jib widely used in the construction tower crane in the prior art on the gantry crane, its lower part adopts the tower body of the gantry and cylindrical structure, and the upper rotating part adopts the flat arm form, Its luffing is realized by the trolley running back and forth on the horizontal track of the flat arm. Since the arm part does not need to swing up and down, and the arm itself is flat, the upper space is effectively used and the lifting capacity is improved. performance, but the crane disclosed in this patent has high investment cost and low work efficiency. Winding system, mechanism operation system includes lifting mechanism, luffing mechanism, rotating mechanism and traveling mechanism, spreader device includes hook and cable storage frame, electromagnetic sucker or electro-hydraulic multi-lobe grab is hung at the lower end of the hook, used for cable storage frame It is used to store the power cable of the electromagnetic sucker or the electro-hydraulic multi-lobe grab; the wire winding system consists of a single lifting wire rope wound on the wire rope drum through the balance pulley, and the balance pulley is located at the head of the trunk bridge. Only one set of lifting mechanism is used, which reduces the cost input; a steel wire rope is used, and a swing type balance pulley is used at the head of the elephant trunk bridge, so that the force on the left and right steel wire ropes is balanced; the hook is changed from a single ordinary hook to a multi-function The hook is equipped with a cable storage frame; the driver's cab is elevated to expand the field of vision, but its complex structure inevitably brings defects such as high input costs. To sum up, the existing portal cranes generally have the disadvantages of high equipment investment cost, high energy consumption, and low work efficiency.

Utility model content

The purpose of this utility model is to overcome the above-mentioned limitations, thereby providing a four-link portal crane with simple structure, safety and reliability, low equipment investment cost, low energy consumption and high working efficiency.

The purpose of this utility model is achieved through the following technical solutions: a four-link portal crane, including a portal system, a jib system, a counterweight system, an articulated turntable, a rotary reducer, a machine room and a driver's room, and a portal frame The system includes the gantry beam and the gantry end beam; the articulated turntable is hinged with the rod system and the upper rotating column through the pin shaft. The rod system is composed of an angled rod system and a straight rod system. The upper rotating column is connected with the gantry system through an internal gear slewing bearing. The lower half of the upper rotating column is equipped with an electrical room, and the upper half is equipped with a luffing mechanism platform; the boom system is connected to the upper rotating column through a hinge. , the jib system is composed of the elephant trunk beam, the main boom frame and the large tie rod. The upper end of the frame is hinged with the middle of the trunk beam, and the main boom is equipped with a luffing mechanism; the balance weight system is composed of a balance beam and a small tie rod, the middle of the balance beam is hinged with the top of the upper rotating column, the front end of the balance beam is hinged with the upper end of the small tie rod, and the small tie rod The lower end is hinged with the middle part of the main boom frame; the slewing reducer is installed on the flange inside the upper rotating column, and the traveling mechanism is arranged under the mast system.

Preferably, a ladder railing system is also installed on the portal frame system, and the ladder railing system and the portal frame system are connected by bolts. The ladder railing system includes a railing ladder platform and a portal frame round platform. Flange connection, gantry round platform adopts regular polygon style.

Preferably, the mast system includes mast beams and mast end beams connected by bolts.

In summary, a four-link portal crane of the present invention has the following advantages: simple structure, safety and reliability, low equipment investment cost, low energy consumption, and high work efficiency.

Description of drawings

Fig. 1 is the main structure schematic diagram of the present utility model;

Fig. 2 is the structure diagram of the upper rotating column of the utility model;

Fig. 3 is a structural schematic diagram of the bar system of the present utility model;

Fig. 4 is a structural schematic diagram of the gantry system of the present invention;

Fig. 5 is a schematic structural view of the walking mechanism of the present utility model;

Fig. 6 is a structural schematic diagram of a large tie rod of the present utility model;

Fig. 7 is the structural representation of the balance beam of the present utility model;

Fig. 8 is a structural schematic diagram of a small tie rod of the present utility model;

Fig. 9 is a structural schematic diagram of the ladder platform of the utility model and the round platform of the gantry;

Fig. 10 is a structural schematic diagram of the main arm frame of the present utility model;

Fig. 11 is a structural schematic diagram of the articulated turntable of the present invention;

Labels in the figure: 1-articulated turntable, 2-rotary reducer, 3-gantry beam, 4-gantry end beam, 5-angle rod system, 6-straight rod system, 7-upper rotating column, 8- Electrical room, 9-luffing mechanism platform, 10-trunk beam, 11-main arm frame, 12-big tie rod, 13-balance beam, 14-small tie rod, 15-rail ladder platform, 16-gantry round platform, 17-machine room, 18-driver's room, 19-traveling mechanism, 20-luffing mechanism.

Detailed ways

In order to deepen the understanding of the utility model, the utility model will be further described below in conjunction with the embodiments and accompanying drawings. The embodiment is only used to explain the utility model, and does not constitute a limitation to the protection scope of the utility model.

A four-link gantry crane as shown in Figure 1 includes a gantry system, a jib system, a counterweight system, an articulated turntable 1, a rotary reducer 2, a machine room 17, and a driver's room 18. The gantry system includes The gantry beam 3 and the gantry end beam 4; the articulated turntable 1 is hinged with the rod system and the upper rotating column 7 through the pin shaft. The rod system is composed of an angle rod system 5 and a straight rod system 6. The rotating column 7 is connected with the articulated turntable 1, the upper rotating column 7 is connected with the gantry system through an internal gear slewing bearing, the lower half of the upper rotating column 7 is provided with an electric chamber 8, and the upper half is provided with a luffing mechanism platform 9. The boom system is connected to the upper rotating column 7 through a hinge, and the boom system is composed of a trunk beam 10, a main boom frame 11 and a large tie rod 12. The lower end of the large tie rod 12 is hinged to the top of the upper rotating column 7. It is hinged with the rear end of the elephant trunk beam 10, the lower end of the main boom frame 11 is hinged with the middle part of the upper rotating column 7, the upper end of the main boom frame 11 is hinged with the middle of the elephant trunk beam 10, and the main boom frame 11 is provided with a luffing mechanism 20; The balance weight system is composed of a balance beam 13 and a small tie rod 14, the middle of the balance beam 13 is hinged to the top of the upper rotating column 7, the front end of the balance beam 13 is hinged to the upper end of the small tie rod 14, and the lower end of the small tie rod 14 is hinged to the middle part of the main boom frame 11; The slewing reducer 2 is installed on the flange inside the upper rotating column 7, a traveling mechanism 19 is provided under the gantry system, and a ladder railing system is installed on the gantry system, and the ladder railing system and the gantry system are connected by bolts , the ladder railing system consists of a railing ladder platform 15 and a door frame round platform 16, the railing ladder platform 15 is connected to the door frame system through a flange, the door frame round platform 16 adopts a regular polygon style, and the door frame system includes a door frame beam 3 It is connected with the door frame end beam 4 by bolts.

In summary, a four-link portal crane of the present invention has the following advantages: simple structure, safety and reliability, low equipment investment cost, low energy consumption, and high work efficiency.

Claims (3)

1. A four-link gantry crane, including a gantry system, a jib system, a counterweight system, an articulated turntable (1), a slewing reducer (2), a machine room (17) and a driver’s room (18), It is characterized in that: the gantry system includes a gantry beam (3) and a gantry end beam (4); the articulated turntable (1) is hinged with a rod system and an upper turn column (7) through a pin shaft, and the The rod system consists of an angled rod system (5) and a straight rod system (6). The rod system is connected with the upper rotating column (7) and the hinged turntable (1) through a pin shaft. The upper rotating column (7) is connected with the door The frame system is connected through the internal gear slewing bearing, the lower half of the upper rotating column (7) is equipped with an electrical room (8), and the upper part is equipped with a luffing mechanism platform (9); The column (7) is connected, and the boom system is composed of the elephant trunk beam (10), the main boom (11) and the large tie rod (12). ) upper end is hinged with the rear end of the elephant trunk (10), the lower end of the main boom (11) is hinged with the middle part of the upper rotating column (7), the upper end of the main boom (11) is hinged with the middle of the elephant trunk (10), and the main boom The frame (11) is provided with a luffing mechanism (20); the balance weight system is composed of a balance beam (13) and a small tie rod (14). The front end of the beam (13) is hinged to the upper end of the small tie rod (14), and the lower end of the small tie rod (14) is hinged to the middle part of the main boom (11); the rotary reducer (2) is installed inside the upper rotating column (7) On the blue, a traveling mechanism (19) is provided below the gantry system. 2. A four-link portal crane according to claim 1, characterized in that: a ladder railing system is also installed on the portal frame system, and the ladder railing system and the portal frame system are connected by bolts, and the ladder The railing system consists of a railing ladder platform (15) and a door frame round platform (16). The railing ladder platform (15) is connected to the door frame system through a flange, and the door frame round platform (16) adopts a regular polygon style. 3. A four-link gantry crane according to claim 1, characterized in that: the gantry system includes a gantry beam (3) and a gantry end beam (4) connected by bolts.