CN-121974235-A - Automatic opening and closing lifting appliance and lifting method thereof

CN121974235ACN 121974235 ACN121974235 ACN 121974235ACN-121974235-A

Abstract

The embodiment of the invention provides an automatic opening and closing lifting appliance and a lifting method thereof, and relates to the technical field of mechanical lifting equipment. Aims to solve the problems of high safety risk and low alignment efficiency caused by manual close-range operation of the existing lifting appliance. The middle part of the lifting hook component is hinged with the lifting appliance main body, so that the stress end and the hooking end form a lever structure, when the stress end is subjected to lifting tension, the hooking end swings outwards and is automatically locked by the gravity of a component, the tension is reduced after the component lands, and the hooking end swings inwards and unhooks automatically under the action of gravity. The guiding and positioning device extends below the lifting appliance main body beyond the hooking end, contacts the component first when the lifting appliance main body descends, and automatically guides the hooking end to accurately align with the lifting part by utilizing a mechanical guiding principle. The automatic alignment, automatic locking and automatic unhooking can be realized without manual intervention, unhooking risks and surface damage are eliminated, and whole-course automation of hoisting operation is realized.

Inventors

Guan Linhong
ZHOU JINHUA
TANG HAISHAN
HUANG SHUAI
LIU DONG
XU GUODONG
FAN YIKAI
WANG HAOQI
CAI JUNQUAN
Chen chuangye
SHI YIN
GU YAODONG
GENG ZHICHANG
SHI FENGFENG
Feng Changding

Assignees

上海振华重工(集团)股份有限公司
上海振华港机重工有限公司

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (10)

1. An automatic open-close sling for hoisting a component, comprising: a spreader body; a hook assembly having a stressed end for connecting a lifting rigging and a hooked end for contacting a member, the central portion of the hook assembly being hinged to the spreader body; Under the condition that the lifting tension applied to the hooking end is reduced, the hooking end swings inwards around the hinge point under the action of gravity so as to be separated from the component; And the guiding and positioning device is arranged below the lifting appliance main body, extends beyond the hooking end below the lifting appliance main body, and contacts the component before the hooking end when the automatic opening and closing lifting appliance integrally descends, so that the hooking end is guided to align with the lifting part of the component.
2. The automatic opening and closing sling according to claim 1, wherein: the number of the lifting hook assemblies is two, and the two lifting hook assemblies are symmetrically hinged to the lifting appliance main body.
3. The automatic opening and closing sling according to claim 1, wherein: the guiding and positioning device comprises a plurality of guiding pieces, wherein the guiding pieces are arranged around the periphery of the lifting appliance body to form an enclosed positioning area, and the enclosed positioning area is used for guiding a component to enter a preset lifting position.
4. The automatic opening and closing hanger according to claim 3, wherein: The guide positioning device further comprises a support and a plurality of fixing seats, wherein the support is fixedly connected with the lifting appliance main body, the plurality of fixing seats are respectively sleeved on the support around the periphery of the lifting appliance main body, the positions of the fixing seats can be adjusted along the direction from the lifting appliance main body to the periphery of the lifting appliance main body, and each fixing seat is used for fixing one guide piece.
5. The automatic opening and closing sling according to claim 4, wherein: the guide is used to maintain contact with the component during lifting of the component to maintain the balance of the component.
6. The automatic opening and closing sling according to claim 5, wherein: The support comprises a plurality of cross beams, the cross beams are welded and fixed into a grid structure in a crossing manner along the transverse direction and the longitudinal direction, and the guide pieces are arranged at the tail ends of the cross beams through the fixing seats.
7. The automatic opening and closing sling according to claim 1, wherein: The lifting hook assembly is connected with the lifting appliance main body through a hinge shaft, the lifting appliance main body is provided with a plurality of hinge holes, and the hinge shaft is detachably connected with the hinge holes so as to adjust the position of the lifting hook assembly.
8. The automatic opening and closing sling according to claim 1, wherein: the automatic opening and closing lifting appliance further comprises an automatic hooking and unhooking arm and a lifting chain, wherein the automatic hooking and unhooking arm comprises a fixed arm and a movable arm, the fixed arm is fixed on the lifting appliance main body, the movable arm is vertically and slidably connected with the fixed arm, and the upper end of the movable arm is used for being connected with a crane; the fixed arm is fixedly provided with a locking part, the movable arm is hinged with a locking part, and the locking part are used for being mutually clamped or separated in the process that the movable arm slides vertically relative to the fixed arm; The locking part is locked with the hoisting part of the component when the locking part is clamped with the locking part, and the hooking end swings inwards to be separated from the component when the locking part is separated from the locking part.
9. The automatic opening and closing sling according to claim 8, wherein: The locking part comprises a first locking part and a second locking part which are arranged at intervals along the vertical direction, wherein the first locking part is positioned above the second locking part, and is provided with a downward-inclined upper surface and an upward-inclined lower surface; the lower surface of the locking part is used for being in sliding fit with the upper surface of the first locking part so that the locking part is in abutting and clamping fit with the lower surface of the first locking part after passing over the first locking part, and the locking part is also used for being in sliding fit with the lower surface of the second locking part so that the locking part passes over the second locking part.
10. A hoisting method of an automatic opening and closing hoisting tool, adopting the automatic opening and closing hoisting tool according to any one of claims 1-9, characterized by comprising: The automatic opening and closing lifting appliance is driven to integrally descend, so that the guiding and positioning device contacts the component before the hooking end, and the hooking end is guided to align with the lifting part of the component; The lifting rigging applies lifting pulling force to the stress end, so that the hooking end swings outwards around a hinging point and is clamped into the lifting part of the component; continuing to lift the lifting appliance to enable the hooking end to be kept in a locking state; After the component is lowered, the lifting tension is reduced, and the hooking end swings inwards around the hinging point under the action of gravity and is separated from the component.

Description

Automatic opening and closing lifting appliance and lifting method thereof Technical Field The invention relates to the technical field of mechanical lifting equipment, in particular to an automatic opening and closing lifting appliance and a lifting method thereof. Background In the prior art, when the balance beam assembly is hoisted by a CJP welding robot station in a structural workshop, a steel plate hook is generally adopted as a lifting appliance, and the steel plate hook is manually taken and hung in a short distance. The method has three outstanding disadvantages that firstly, the safety risk of unhooking and sliding is caused, personnel and equipment are endangered, secondly, the hook body directly acts on the surface of the component, quality defects such as clamping marks are easy to generate, thirdly, the subsequent manual repair and polishing of the clamping marks are needed, a large amount of working hours and occupied field resources are consumed, the component transferring and procedure handing-over period is affected more seriously, the production cost is high, and the operation efficiency is low. In addition, the traditional steel plate hook lacks special guiding and positioning structure, needs manual adjustment hoist and component's counterpoint position repeatedly during the hoist and mount, not only further reduces operating efficiency, still easily leads to the component atress uneven because of counterpoint deviation, aggravates unhook risk and surface damage. Disclosure of Invention The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. The invention aims to provide an automatic opening and closing lifting appliance and a lifting method thereof, which can solve the problems of high safety risk and low alignment efficiency caused by manual close operation of the existing lifting appliance. Embodiments of the invention may be implemented as follows: The embodiment of the invention provides an automatic opening and closing lifting appliance, which is used for lifting a component and comprises a lifting appliance main body, a lifting hook assembly and a guiding and positioning device, wherein the lifting hook assembly is provided with a stress end used for connecting a lifting rope and a hooking end used for contacting the component, the middle part of the lifting hook assembly is hinged to the lifting appliance main body, the hooking end swings outwards around a hinging point to lock a lifting part of the component under the condition that the stress end is subjected to lifting tension, the hooking end swings inwards around the hinging point to be separated from the component under the action of gravity under the condition that the lifting tension of the hooking end is reduced, the guiding and positioning device is arranged below the lifting appliance main body and extends beyond the hooking end, and when the automatic opening and closing lifting appliance is wholly lowered, the guiding and positioning device contacts the component before the hooking end, so that the hooking end is guided to align with the lifting part of the component. In addition, the automatic opening and closing lifting appliance provided by the embodiment of the invention can also have the following additional technical characteristics: Optionally, the number of the hook assemblies is two, and the two hook assemblies are symmetrically hinged on the hanger main body. Optionally, the guiding and positioning device comprises a plurality of guides arranged around the periphery of the spreader body to form an enclosed positioning area for guiding a member into a predetermined lifting position. Optionally, the guiding and positioning device further comprises a bracket and a plurality of fixing seats, wherein the bracket is fixedly connected with the lifting appliance main body, the plurality of fixing seats are respectively sleeved on the bracket around the periphery of the lifting appliance main body, the positions of the fixing seats can be adjusted along the direction from the lifting appliance main body to the periphery of the lifting appliance main body, and each fixing seat is used for fixing one guiding piece. Optionally, the guide is adapted to remain in contact with the component during lifting of the component to maintain the balance of the component. Optionally, the bracket comprises a plurality of cross beams, the cross beams are welded and fixed into a grid structure in a crossing manner along the transverse direction and the longitudinal direction, and the guide pieces are arranged at the