CN-122009986-A - Bridge type grab ship unloader three-hook side complete machine hoisting method based on four-main-hook floating crane

CN122009986ACN 122009986 ACN122009986 ACN 122009986ACN-122009986-A

Abstract

The invention discloses a three-hook side complete machine hoisting method of a bridge type grab ship unloader based on four-main-hook floating cranes, which is characterized in that an acute angle is formed between a floating crane arm frame and a shoreline of a wharf, complete machine hoisting is carried out from the side direction of the bridge type grab ship unloader, a plurality of floating crane main hooks on the floating crane arm frame are in asymmetric arrangement, namely, the floating crane main hooks on the land side are singular, the floating crane main hooks on the sea side are even, a rigging tool and an interference prevention mechanism are arranged on the floating crane main hooks, and hoisting lifting lugs are arranged at the connection positions between upright posts and contact cross beams on the upper part of a door frame of the bridge type grab ship unloader. The invention aims to solve the technical problem that the whole crane can not be lifted from the front under the conditions that the floating crane is limited by lifting capacity, operation space and the like.

Inventors

GU ZHEMING
QIAN LIANGLIANG
JI JIANWEI
FENG ZILEI
DING ZHIXIANG
LI XUEYUN
Niu Tiefeng
XIAO WEI
JIANG XIAOYUN

Assignees

上海振华重工(集团)股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260330

Claims (6)

1. A bridge type grab ship unloader three-hook side complete machine hoisting method based on four main hook floating cranes is characterized in that: an acute angle is formed between the floating crane arm frame and a quay line of the wharf, and the whole crane is hoisted from the lateral direction of the bridge type grab ship unloader; the plurality of floating crane main hooks on the floating crane arm support are arranged asymmetrically, namely the floating crane main hooks on the land side face are singular, and the floating crane main hooks on the sea side face are even; a rigging tool and an interference prevention mechanism are arranged on the floating crane main hook; and a lifting lug is arranged at the joint between the upright post and the connecting beam at the upper part of the door frame of the bridge type grab ship unloader.
2. The method for hoisting the three-hook sidewise complete machine of the bridge type grab ship unloader based on the four-main-hook floating crane according to claim 1, wherein an acute angle between the floating crane boom and a shoreline of the wharf is 45 degrees+/-1 degrees.
3. The method for hoisting the three-hook sidewise complete machine of the bridge type grab ship unloader based on the four-main-hook floating crane, which is characterized in that the number of the floating crane main hooks is four; the main hook of the floating crane on the land side adopts one main hook and corresponds to two lifting lugs on the bridge grab ship unloader; The number of the floating crane main hooks on the sea side is two, and each floating crane main hook corresponds to one lifting lug on the bridge grab ship unloader.
4. The method for hoisting the three-hook sidewise complete machine of the bridge type grab ship unloader based on the four-main-hook floating crane according to claim 3, wherein the configuration of the rigging tool and the interference prevention mechanism on the main hook of the floating crane comprises the following steps: The two ends of one main hook of the floating crane on the side face of the land are respectively provided with a first steel wire rope ring, the first steel wire rope rings on the same side on the two ends are respectively connected with a hanging beam, so that the hanging beams are arranged in a horizontal direction, the two ends of each hanging beam are respectively connected with a second steel wire rope ring and a third steel wire rope ring in sequence, the second steel wire rope rings are connected with the third steel wire rope rings through first lock hook devices, and the third steel wire rope rings are connected with the corresponding hanging lifting lugs; The two floating crane main hooks on the sea side are sequentially connected with a fourth steel wire rope ring, a fifth steel wire rope ring and a sixth steel wire rope ring, the fourth steel wire rope ring is connected with the fifth steel wire rope ring through a shackle, the fifth steel wire rope ring is connected with the sixth steel wire rope ring through a second lock hook device, and the sixth steel wire rope ring is connected with the corresponding lifting lug; The first latch hook device and the second latch hook device are connected through a seventh steel wire rope ring; The two floating crane main hooks on the sea side are connected through an eighth steel wire rope ring to carry out locking hooks.
5. The method for hoisting the three-hook sidewise complete machine of the bridge type grab ship unloader based on the four-main-hook floating crane, which is characterized in that two hanging beams on the main hook of the floating crane on the land side are 800t hanging beams; the lifting beam is utilized to prop open the opening between the second steel wire rope rings, the rear girder of the bridge type grab ship unloader is respectively avoided, and the third steel wire rope rings penetrate through the space between the rear girder and the upright post to be connected with the corresponding lifting lugs; controlling the opening gear between the fourth wire rope rings by using the eighth wire rope rings, avoiding the large diagonal bracing on the door frame, and enabling the sixth wire rope rings to penetrate from the inner side of the large diagonal bracing and be connected with the corresponding lifting lugs; And controlling the opening between the second steel wire rope ring and the fifth steel wire rope ring by using the first lock hook device, the second lock hook device and the seventh steel wire rope ring, and avoiding a machine room of the bridge grab ship unloader.
6. The lifting method for the three-hook sidewise complete machine of the bridge grab ship unloader based on the four-main-hook floating crane is characterized in that four groups of lifting lugs are arranged, and are symmetrically arranged at the connection part between the sea side upright post and the connecting cross beam at the upper part of the door frame and the connection part between the land side upright post and the connecting cross beam at the upper part of the door frame respectively; The lifting lug is of a four-hole structure.

Description

Bridge type grab ship unloader three-hook side complete machine hoisting method based on four-main-hook floating crane Technical Field The invention relates to a complete machine hoisting technology of a bridge type grab ship unloader of a steel port machine, in particular to a three-hook side complete machine hoisting method of the bridge type grab ship unloader based on a four-main-hook floating crane. Background Currently, conventional bridge grab ship unloaders are typically of a large fixed construction, and their installation on a quay is a large and complex project. As shown in fig. 1, the conventional installation method needs to split the whole machine into a plurality of parts, including a door frame assembly 1, a front girder assembly 2, a front pull rod 3, a ladder frame assembly 4, a rear supporting tube 5, a machine room assembly 6, a rear girder assembly 7, a discharging system 8 and the like, and the whole machine is assembled, welded, spliced and debugged on site one by one at a wharf. The mode has the problems of long construction period, large field work load, high installation cost, obvious influence on the normal operation of the wharf and the like. In addition, many old wharfs are limited by the existing gallery layout, the space limitation of new equipment to be placed between the existing equipment, the wharf carrying capacity and other factors, and more bridge type grab ship unloader projects need to adopt a whole machine hoisting and landing mode in order to ensure the structural integrity of the whole machine, shorten the equipment in-place time and furthest reduce the influence on the normal production of the wharf. However, the conventional bridge grab ship unloader has remarkable weight and size differences due to different production rates, and the corresponding hoisting scheme also needs to be different from machine to machine. The whole machine weight of the large bridge type grab ship unloader can generally reach 2400 tons, the size is huge, most floating cranes are limited by hoisting capacity and operation space, the whole machine hoisting is difficult to implement from the front, main structural members are often avoided from the side of the equipment to hoist, and the scheme making and implementing difficulty is further increased. Disclosure of Invention Aiming at the defects in the prior art, the invention aims to provide a bridge type grab ship unloader three-hook side complete machine hoisting method based on a four-main-hook floating crane, which aims at solving the technical problem that complete machine hoisting and landing cannot be completed from the front under the conditions that the floating crane is limited by hoisting capacity, operation space and the like. In order to achieve the above purpose, the invention adopts the following technical scheme: A bridge grab ship unloader three-hook side complete machine hoisting method based on four main hook floating cranes; an acute angle is formed between the floating crane arm frame and a quay line of the wharf, and the whole crane is hoisted from the lateral direction of the bridge type grab ship unloader; the plurality of floating crane main hooks on the floating crane arm support are arranged asymmetrically, namely the floating crane main hooks on the land side face are singular, and the floating crane main hooks on the sea side face are even; a rigging tool and an interference prevention mechanism are arranged on the floating crane main hook; and a lifting lug is arranged at the joint between the upright post and the connecting beam at the upper part of the door frame of the bridge type grab ship unloader. Preferably, an acute angle between the floating boom frame and a shoreline of the wharf is 45 degrees+/-1 degrees. Preferably, the floating crane main hook has four; the main hook of the floating crane on the land side adopts one main hook and corresponds to two lifting lugs on the bridge grab ship unloader; The number of the floating crane main hooks on the sea side is two, and each floating crane main hook corresponds to one lifting lug on the bridge grab ship unloader. Preferably, all dispose rigging frock and anti-interference mechanism on the floating crane main hook specifically include: The two ends of one main hook of the floating crane on the side face of the land are respectively provided with a first steel wire rope ring, the first steel wire rope rings on the same side on the two ends are respectively connected with a hanging beam, so that the hanging beams are arranged in a horizontal direction, the two ends of each hanging beam are respectively connected with a second steel wire rope ring and a third steel wire rope ring in sequence, the second steel wire rope rings are connected with the third steel wire rope rings through first lock hook devices, and the third steel wire rope rings are connected with the corresponding hanging lifting lugs; The two floating crane main hooks on the sea side are s