Derek gantri serbaguna Sevencrane

Industrial multipurpose gantry crane price can be classified according to the structure of the door frame, the form of the main beam, the structure of the main beam, and the form of use.

1. According to the door frame structure

Divided into gantry cranes and cantilever gantry cranes

Sevencrane multipurpose gantry crane for sale
1. Gantry crane penuh: balok utama tidak memiliki overhang, dan troli bergerak dalam bentang utama.
2. Semi-gantry crane: The outriggers have height differences, which can be determined according to the civil engineering requirements of the site.

Derek gantry kantilever
1. Double cantilever gantry crane: The most common structural form, the stress of the structure and the effective use of the site area are both reasonable.
2. Custom multipurpose gantry crane supplier: This structural form is often selected due to site restrictions.

2. According to the main beam form

1. Balok utama tunggal
Derek gantry girder utama tunggal memiliki struktur sederhana, mudah diproduksi dan dipasang, dan memiliki massa kecil. Girder utama sebagian besar merupakan struktur rangka kotak defleksi. Dibandingkan dengan derek gantry girder utama ganda, kekakuan keseluruhannya lebih lemah. Oleh karena itu, bentuk ini dapat digunakan saat kapasitas angkat Q≤50t dan bentang S≤35m. Kaki pintu derek gantry girder tunggal tersedia dalam tipe L dan tipe C. Tipe L mudah diproduksi dan dipasang, memiliki ketahanan tegangan yang baik, dan memiliki massa kecil. Namun, ruang untuk mengangkat barang agar melewati kaki relatif kecil. Kaki berbentuk C dibuat dalam bentuk miring atau melengkung untuk menciptakan ruang lateral yang lebih besar sehingga barang dapat melewati kaki dengan lancar.

2. Balok utama ganda
Double main girder gantry cranes have strong load-bearing capacity, large spans, good overall stability, and many varieties. However, compared with single main girder gantry cranes with the same lifting capacity, their own mass is larger and the cost is higher. According to the different main beam structures, cost multipurpose gantry crane cost can be divided into two forms: box beam and truss. Generally, box-shaped structures are used.

3. According to the main beam structure

1. Balok rangka
Bentuk struktur yang dilas dengan baja siku atau balok-I memiliki keunggulan biaya rendah, bobot ringan, dan ketahanan angin yang baik. Namun, karena banyaknya titik pengelasan dan cacat rangka itu sendiri, balok rangka juga memiliki kekurangan seperti defleksi besar, kekakuan rendah, keandalan yang relatif rendah, dan perlunya deteksi titik pengelasan yang sering. Cocok untuk lokasi dengan persyaratan keselamatan yang lebih rendah dan kapasitas angkat yang lebih kecil.

2. Balok kotak
Steel plates are welded into a box structure, which has the characteristics of high safety and high stiffness. Generally used for large-tonnage and ultra-large-tonnage gantry cranes. As shown in the picture on the right, MGhz1200 has a lifting capacity of 1,200 tons. It is the largest gantry crane in China. The main beam adopts a box girder structure. Box beams also have the disadvantages of high cost, heavy weight, and poor wind resistance.

3. Balok sarang lebah
Umumnya mengacu pada "balok sarang lebah segitiga sama kaki", permukaan ujung balok utama berbentuk segitiga, terdapat lubang sarang lebah pada jaring miring di kedua sisi, dan terdapat tali busur di bagian atas dan bawah. Balok sarang lebah menyerap karakteristik balok rangka dan balok kotak. Dibandingkan dengan balok rangka, balok ini memiliki kekakuan yang lebih besar, lendutan yang lebih kecil, dan keandalan yang lebih tinggi. Namun, karena penggunaan pengelasan pelat baja, berat sendiri dan biayanya sedikit lebih tinggi daripada balok rangka. Cocok untuk lokasi atau lokasi balok dengan penggunaan yang sering atau kapasitas angkat yang berat. Karena jenis balok ini merupakan produk yang dipatenkan, produsennya lebih sedikit.

4. According to the form of use

1. Derek gantry biasa
This kind of crane mostly adopts box type and truss type structure, and has the most wide range of uses. It can handle various finished items and bulk materials, with a lifting capacity of less than 100 tons and a span of 4 to 39 meters. Ordinary gantry cranes with grab buckets work at a higher level. Ordinary gantry cranes mainly refer to hook, grab, electromagnetic, and hoist gantry cranes, and also include semi-gantry cranes.

2.Hydropower station cost multipurpose gantry crane cost
It is mainly used for lifting, opening and closing gates, and can also be used for installation operations. The lifting capacity reaches 80~500 tons, the span is small, 8~16 meters, and the lifting speed is low, 1~5 meters/min. Although this kind of crane is not frequently lifted, the work is very heavy once it is used, so the work level must be appropriately increased.

3. Shipbuilding gantry crane
Used to assemble the hull on the slipway, there are always two lifting trolleys: one has two main hooks, running on the track on the upper flange of the bridge; the other has a main hook and an auxiliary hook, on the lower flange of the bridge. Run on rails to flip and lift large hull segments. The lifting capacity is generally 100~1500 tons; the span is up to 185 meters; the lifting speed is 2~15 meters/minute, and there is also a micro-movement speed of 0.1~0.5 meters/minute.

4. Derek gantry kontainer
Used in container terminals. Container track gantry crane unloading the quay wall container carrying bridge from the ship with a trailer
After being transported to the yard or rear, they are stacked by a container gantry crane or directly loaded onto a truck for transportation, which can speed up the turnover of container carrying bridges or other cranes. Stacking yards that can stack containers with 3 to 4 layers in height and 6 rows in width usually use tire type, but rail type is also used. Compared with container straddle trucks, container gantry cranes have larger spans and heights on both sides of the mast. In order to meet the transportation needs of port terminals, this kind of crane has a higher working level. The lifting speed is 8~10 meters/min; the span is determined according to the number of rows of containers that need to be spanned. The maximum is about 60 meters, corresponding to the lifting weight of 20-foot, 30-foot, and 40-foot long containers of about 20 tons and 25 tons respectively. and 30 tons.