Special lifting appliance for lifting offshore photovoltaic large-size net rack

Abstract

The utility model discloses a special lifting appliance for lifting an offshore photovoltaic large-size net rack, which comprises a frame structure formed by splicing cross beams and longitudinal beams, each of the cross beams and the longitudinal beams consists of a middle beam section and variable cross-section beam sections arranged at two ends of the middle beam section, and upper lifting belts for lifting the whole frame structure are respectively mounted at the upper parts of the beams through shackles. The lower part of the beam is respectively provided with a lower lifting ring for connecting a lifted object through a shackle; winch machines used for achieving single-side lifting are installed at the four corners of the frame structure respectively, and the lower ends of lifting ropes of the winch machines are connected with double hooks used for preventing the net rack from rotating when the net rack is lifted. By arranging the cross beams and the longitudinal beams which form the frame structure, the hoisting stability of the net rack is improved; by installing the winches at the four corners, single-side lifting of the net rack in the hoisting process is achieved, and by arranging the double hooks, aerial rotation of the net rack in the hoisting process is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to offshore photovoltaic hoisting construction technical field, especially relates to a special lifting appliance for offshore photovoltaic large -size net rack hoisting. BACKGROUND

[0002] Net rack structure is mostly used in gas station, factory building etc., and small -size net rack mostly adopts ground assembly, and the whole hoisting mode construction is carried out. Large -size net rack structure has the following several common installation methods, one is net rack high altitude bulk method: construction personnel carries out on -the -spot erection installation on the working platform; two is net rack high altitude slip method: construction personnel adopts the mobile scaffold to replace the full -paved fixed scaffold, and the net rack installation of different regions is carried out through the movement of the scaffold; three is: net rack whole ascension method, construction personnel carries out erection on the ground flat bottom ground after needing the net rack, and then uses professional hoisting machinery to install, finally construction personnel carries out adjustment and fixing.

[0003] The above -mentioned method is indeed practical on land for large -size net rack structure, but it is difficult to implement on the sea, and for large -span net rack, a special lifting appliance needs to be designed to realize the hoisting of large -size net rack. The installation of photovoltaic steel net rack of offshore photovoltaic new energy project is difficult in high -altitude posture adjustment and loading and unloading due to the large length span and heavy weight of single steel net rack, and the rotation needs to be completed during the hoisting process. The steel net rack is prone to sway during hoisting and transportation, causing difficulty in loading and unloading and installation. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of the prior art, and provides a special lifting appliance which is reasonable in design, can be lifted on one side and realizes the hoisting of large -size net rack.

[0005] In order to realize the above -mentioned purpose, the utility model adopts the following technical scheme:

[0006] A special lifting appliance for offshore photovoltaic large -size net rack hoisting, characterized in that it comprises a frame structure composed of cross beams and longitudinal beams, the cross beams and longitudinal beams are all truss structures, the cross beams and longitudinal beams are all composed of a middle beam segment and variable cross section beam segments arranged at both ends of the middle beam segment, the middle beam segment and the variable cross section beam segments, and adjacent variable cross section beam segments are all connected through bolts, the upper parts of the cross beams and longitudinal beams are respectively provided with upper lifting belts for hoisting the whole frame structure through shackles, and the lower parts of the cross beams and longitudinal beams are respectively provided with lower lifting rings for connecting the hoisted objects through shackles; winches for realizing one -sided lifting are arranged on the four corners of the frame structure, and the lower ends of the lifting ropes of the winches are connected with double hooks for avoiding rotation during net rack hoisting.

[0007] The technical problem solved by the utility model can also be realized by the following technical scheme, that is, a mounting device of the winch is arranged on each of the four corners of the frame structure.

[0008] The technical problem solved by the utility model can also be solved by the following technical scheme, the installation device includes the support of being arranged in the both sides of beam and the roll body of rolling cooperation with beam body, the roll body is arranged below the beam and is connected with the support through the bearing, the connecting bolt is arranged above the beam, the connecting plate of being connected with the connecting bolt is arranged on the support, the locking nut is arranged on the connecting bolt outside the connecting plate.

[0009] The technical problem solved by the utility model can also be solved by the following technical scheme, the connecting ring of being connected with the upper lifting belt is installed at the joint of the above transverse beam and longitudinal beam.

[0010] The technical problem solved by the utility model can also be solved by the following technical scheme, the spraying layer for ensuring the long-term wear corrosion resistance of equipment is arranged on the surface of the transverse beam and longitudinal beam.

[0011] Compared with the prior art, the utility model discloses the transverse beam and longitudinal beam of constituting the frame structure, makes the shape of the lifting appliance match the net rack, improves the hoisting stability of net rack, improves the structural quality of lifting appliance itself through the arrangement truss structure, reduces the weight of the whole lifting appliance through the arrangement variable cross section beam section, realizes the one-side lifting in the net rack hoisting process through the installation winch in the four corners of frame structure, realizes the aerial swivel of net rack in the hoisting process through the arrangement double hook, further improves the hoisting efficiency of net rack. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the arrangement drawing of the special lifting appliance for offshore photovoltaic large-size net rack hoisting of the utility model;

[0013] Figure 2 It is Figure 1 It is the top view of the utility model;

[0014] Figure 3 It is the structural drawing of installation device;

[0015] Figure 4 It is the net rack hoisting drawing.

[0016] In the drawing: 1-transverse beam, 2-longitudinal beam, 3-upper lifting belt, 4-intermediate beam section, 5-variable cross section beam section, 6-lower lifting ring, 7-winch, 8-support, 9-connecting bolt, 10-connecting ring. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments.

[0018] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0019] Referring to Figures 1-4 A kind of special lifting appliance for offshore photovoltaic large-size net rack hoisting, including the frame structure being spliced by crossbeam 1 and longitudinal beam 2, the crossbeam 1 is equipped with front crossbeam and rear crossbeam, the longitudinal beam 2 is equipped with left longitudinal beam and right longitudinal beam, the crossbeam 1 and longitudinal beam 2 are all truss structure, the crossbeam 1 and longitudinal beam 2 are all composed of middle beam section 4 and variable cross-section beam section 5 being arranged at both ends of middle beam section 4, middle beam section 4 and variable cross-section beam section 5, adjacent variable cross-section beam section 5 are all connected by bolt, upper portion of crossbeam 1 and longitudinal beam 2 is equipped with upper lifting belt 3 for hoisting entire frame structure by shackle respectively, lower portion of crossbeam and longitudinal beam is equipped with lower lifting ring 6 for connecting hoisted object by shackle respectively;Hoist 7 for realizing unilateral lifting is installed on the four corners of the frame structure, the lower end of the lifting rope of hoist 7 is connected with double hook for avoiding rotation when net rack hoisting, hoist is installed in the beam section of net rack low point one side lifting appliance, realizes aerial rotation of net rack in hoisting process;Spraying layer for ensuring long-term wear resistance and corrosion resistance of equipment is equipped on the surface of crossbeam and longitudinal beam.

[0020] The mounting device of hoist 7 is installed on the frame structure, and the mounting device comprises supports 8 arranged on both sides of the beam and roller bodies in rolling contact with the beam bodies, the roller bodies are arranged below the beam and are connected with the supports 8 through bearings, connecting bolts 9 are arranged above the beam, connecting plates connected with the connecting bolts are arranged on the supports 8, and locking nuts are arranged on the connecting bolts 9.

[0021] Connecting rings 10 connected with the upper lifting belts are installed at the junctions of the crossbeams and the longitudinal beams, so as to facilitate the connection with the upper lifting belts.

[0022] The special lifting appliance for offshore photovoltaic large-size net rack hoisting is composed of a cross beam, a longitudinal beam and a winch set, the beam body is welded by low-alloy high-strength steel pipes, the beam body is a truss structure, the beam and each structural member are welded by carbon dioxide gas protection, and the welds are nondestructively detected, the weld quality is the secondary standard, the surface of the lifting appliance adopts high-quality spraying technology, the long-term wear and corrosion resistance of the equipment is ensured, the longitudinal beam and the cross beam are both composed of two variable cross-section beam sections and one middle beam section, the beam sections are connected by bolts, the longitudinal beam and the cross beam form a frame structure, the upper part of the frame beam is connected with a lifting belt by a shackle, the lower part is connected with a lifting belt by a shackle through a connecting plate, the other end of the lifting belt is connected with a lifting point of a hoisted object, and the winch set can be installed on the beam section of the lifting appliance on one side of the low point of the net rack, so that the aerial rotation of the net rack in the hoisting process is facilitated.

[0023] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A special lifting tool for hoisting large-size offshore photovoltaic grid structures, characterized in that, The structure includes a frame structure assembled from horizontal and vertical beams, both of which are truss structures. Each horizontal and vertical beam consists of an intermediate beam segment and variable cross-section beam segments located at both ends of the intermediate beam segment. The intermediate beam segment and the variable cross-section beam segment, as well as adjacent variable cross-section beam segments, are connected by bolts. The upper part of the horizontal and vertical beams is equipped with upper lifting straps for hoisting the entire frame structure via shackles, and the lower part of the horizontal and vertical beams is equipped with lower lifting rings for connecting the hoisted object via shackles. Winches for unilateral lifting are installed at the four corners of the frame structure, and the lower end of the winch's hoisting rope is connected to double hooks to prevent rotation during the hoisting of the space frame.

2. The special lifting tool for large-size offshore photovoltaic grid installation according to claim 1, characterized in that, A winch mounting device is installed at each of the four corners of the frame structure.

3. The special lifting tool for large-size offshore photovoltaic grid installation according to claim 2, characterized in that, The installation device includes supports on both sides of the beam and rollers that roll in cooperation with the beam. The rollers are located below the beam and connected to the supports via bearings. Connecting bolts are provided above the beam. Connecting plates connected to the connecting bolts are provided on the supports. Locking nuts are provided on the connecting bolts.

4. The special lifting tool for hoisting large-size marine photovoltaic grid structures according to claim 1, characterized in that, A connecting ring that connects to the upper sling is installed at the junction of the crossbeam and the longitudinal beam.

5. A special lifting tool for hoisting large-size offshore photovoltaic grid structures according to claim 1, characterized in that, Both the crossbeams and longitudinal beams are coated with a spray coating to ensure the long-term wear and corrosion resistance of the equipment.

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