Floor turnover lifting appliance for large plate unit

Abstract

The utility model discloses a landing turnover lifting appliance for a large plate unit. The landing turnover lifting appliance comprises a lug plate, a first clamping plate and a second clamping plate, the number of the lug plates is two, a lifting hole is formed in the upper end of each lug plate, and a clamping groove is formed in the lower end of each lug plate. The upper surface of the first clamping plate is connected with the upper wall face of the clamping groove, and the first clamping plate and the lug plate are arranged in a perpendicular intersection mode. The number of the second clamping plates is two, and the lower surfaces of the second clamping plates are connected with the lower wall faces of the corresponding clamping grooves respectively and also perpendicularly intersect with the lug plates. The distance between the lower surface of the first clamping plate and the upper surface of the second clamping plate is used for clamping a plate unit; the first clamping plate and the second clamping plate are each provided with a plurality of bolt holes, and bolts are arranged in the bolt holes. The problem that an existing large plate unit is difficult to turn over is solved.

Description

Technical Field

[0001] The utility model relates to a hoisting technology, and more particularly to a floor-standing hoist for a large-scale plate unit. Background Art

[0002] Plate elements are a crucial component of long-span steel bridge structures. Top plate elements are typically manufactured using the flip-up method. After assembly and welding, they must be flipped 180° before they can be used in the final assembly of the steel box girder.

[0003] There are two existing methods of turning over: one is to use a turning machine, and the other is to use a hoist for turning over. For three-piece and four-piece panel units with large width and length, the size of the turning machine is not enough to support the entire panel. If a hoist is used for turning over, it is divided into two types of operations: along the width direction and along the length direction. Due to the large size and weight of large panel units, the rigidity in the width direction is weak, and the thickness of the top plate is thin. If the panel unit is lifted and turned over along the width direction, the lifted panel unit will generate large stress at the installation position of the hoist, exceeding the allowable value, causing irreversible plastic deformation, and even damaging the panel unit. If it is turned over along the length direction, it is necessary to consider both the height limit of the workshop and the strength and deformation of the panel unit, which places higher requirements on the hoist and the lifting process. Utility Model Content

[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a floor-standing turning hoist for large-scale plate units, so as to solve the problem that it is difficult to turn over the existing large-scale plate units.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A floor-standing turning sling for a large plate unit comprises an ear plate, a first clamping plate and a second clamping plate;

[0007] The ear plates are provided with two identical pieces, the upper end of the ear plates is provided with a hanging hole, and the lower end is provided with a clamping groove;

[0008] The first clamping plate is provided with one piece, the upper surface of the first clamping plate is connected to the upper wall surface of the clamping groove, and is arranged to form a vertical intersection with the ear plate;

[0009] The second clamping plates are provided in two pieces, and the lower surfaces of the second clamping plates are respectively connected to the lower wall surfaces of the corresponding clamping grooves and are also arranged to form a vertical intersection with the ear plates;

[0010] The distance between the lower surface of the first clamping plate and the upper surface of the second clamping plate is used to clamp the plate unit;

[0011] A plurality of bolt holes are formed on the first clamping plate and the second clamping plate, and bolts are disposed in the bolt holes.

[0012] Preferably, heavy plates are provided on both side surfaces of the hanging hole.

[0013] Preferably, the depth of the clamping groove = the excess length of the excess end of the plate unit;

[0014] The height of the clamping groove=the thickness of the first clamping plate+the thickness of the second clamping plate+the thickness of the plate unit.

[0015] Preferably, a plurality of first ribs are provided between the upper surface of the first splint and the side surface of the ear plate;

[0016] A plurality of second ribs are provided between the lower surface of the second clamping plate and the side surface of the ear plate.

[0017] Preferably, the long side dimension of the second clamping plate = the depth of the clamping groove

[0018] The short side dimension of the second plywood is slightly smaller than the distance between two adjacent U-ribs on the plate unit;

[0019] The short side dimension of the first clamping plate = the depth of the clamping groove;

[0020] The long side dimension of the first clamping plate=the short side dimension of the second clamping plate*(8-9).

[0021] Preferably, the first clamping plate is provided with three bolt holes respectively near the two end positions and the middle position;

[0022] The second clamping plate is provided with six bolt holes, and three bolt holes form a group and are respectively located on both sides of the slot.

[0023] The utility model provides a floor-standing turning sling for large plate units, which has the following beneficial effects:

[0024] 1) The utility model is suitable for turning over large panel units with large width and length in the longitudinal direction. It can solve the difficulty of turning over large panel units with three or four pieces in the workshop. It can be used in workshops with height restrictions and utilizes the bending resistance of the U rib to meet the strength and deformation requirements of the panel unit turning over, ensuring product quality and meeting the safety of lifting and turning.

[0025] 2) The floor-standing lifting device of the utility model is fixedly connected to the plate unit by a first clamping plate, a second clamping plate and bolts, which is convenient for installation and disassembly;

[0026] 3) The contact area between the first clamping plate and the plate unit in the floor-standing turning hoist of the present invention is large, so that the thin plate unit is evenly stressed during the lifting process, stress concentration in the plate unit is eliminated, and the stress value and deflection of the plate unit during the turning process are within the allowable value range;

[0027] 4) The floor-standing turning sling of the present invention is highly practical, and both the plate unit with U ribs and the plate unit with I ribs can be equipped with such a sling and sling arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of the utility model floor-standing turning sling;

[0029] Figure 2 yes Figure 1 Schematic diagram of the middle A direction;

[0030] Figure 3 This is a top view of the floor-standing turning sling of the utility model installed on the plate unit;

[0031] Figure 4 This is a front view of a local area after the floor-standing turning sling of the utility model is installed on the plate unit;

[0032] Figure 5 This is a top view of a local area after the floor-standing turning sling of the utility model is installed on the plate unit;

[0033] Figure 6 It is a schematic diagram of using the floor-standing turning hoist of the utility model to turn a panel unit 90 degrees. DETAILED DESCRIPTION

[0034] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0035] Combine Figures 1 to 6 As shown, the present invention provides a floor-standing turning sling for a large panel unit, comprising an ear plate 11 , a first clamping plate 14 and a second clamping plate 13 .

[0036] Two identical ear plates 11 are provided. A hanging hole is provided at the upper end of each of the two ear plates 11 , and a clamping groove is provided at the lower end, presenting an insertion type.

[0037] A heavy plate 12 is welded on both sides of the hanging hole.

[0038] One first clamping plate 14 is provided, and the upper surface of the first clamping plate 14 is welded to the upper wall surface of the clamping groove on the ear plate 11 , forming a vertical intersection with the ear plate 11 .

[0039] Two second clamping plates 13 are provided, and the lower surfaces of the second clamping plates 13 are respectively welded to the lower wall surfaces of the corresponding clamping grooves on the two ear plates 11 , and are also arranged to form a perpendicular intersection with the ear plates 11 .

[0040] The distance between the lower surface of the first clamping plate 14 and the upper surface of the second clamping plate 13 is used to clamp the panel unit.

[0041] The first clamping plate 14 is provided with three bolt holes, one near the two end portions and one in the middle, each of which is provided with a bolt 17 .

[0042] Six bolt holes are formed on each of the two second clamping plates 13 , with three bolt holes forming a group, forming two groups, which are located on both sides of the slot on the ear plate 11 , and bolts 17 are disposed in each of the bolt holes.

[0043] The first clamping plate 14, the plate unit 200, and the second clamping plate 13 are fixedly connected by bolts 17. The bolts 17 are M24 high-strength bolts, which are conducive to firm installation.

[0044] The depth of the clamping groove on the ear plate 11 is equal to the excess length of the excess end of the plate unit 200 .

[0045] The height of the clamping groove on the ear plate 11 = the thickness of the first clamping plate 14 + the thickness of the second clamping plate 13 + the thickness of the plate unit 200 .

[0046] The long side dimension of the second clamping plate 13 = the depth of the clamping groove;

[0047] The short side dimension of the second clamping plate 13 is slightly smaller than the distance between two adjacent U-ribs on the plate unit 200 .

[0048] The short side dimension of the first clamping plate 14 is equal to the depth of the clamping groove.

[0049] The long side dimension of the first clamping plate 14 = the short side dimension of the second clamping plate 13 * (8-9), which is conducive to forming a larger contact area between the first clamping plate 14 and the plate unit 200, and keeping the thin plate of the plate unit 200 evenly stressed.

[0050] Four first ribs 16 are welded between the upper surface of the first clamping plate 14 and the side surface of the ear plate 11, and four second ribs 15 are welded between the lower surface of the second clamping plate 13 and the side surface of the ear plate 11. The first ribs 16 and the second ribs 15 are beneficial to increase the lateral stiffness of the lifting ear 11.

[0051] The use process of the utility model floor-standing turning sling is as follows:

[0052] The plate unit 200 is turned over in the length direction, and two sets of the floor-standing turning hoist 100 of the present invention are installed at the excess end of the plate unit 200, and are symmetrically arranged with the width center line of the plate unit 200 as the symmetry axis. One set of the floor-standing turning hoist 100 of the present invention can be arranged at a distance of 1 / 8 times the plate width from the edge of the plate unit 200. The floor-standing turning hoist 100 of the present invention is inserted into the large plate unit 200 with U ribs to be turned over, with the first plywood 14 on the ribless side and the second plywood 13 between the two U ribs. Taking into account the height limit of the workshop hoisting and the lateral force on the ear plate 11 not being too large, the lifting wire rope 32 of the two ear plates 11 on the floor-standing turning hoist of the present invention has an elevation angle of not less than 75 degrees. The crane is connected to the shackle 31 passing through the lifting hole on the ear plate 11 through the wire rope. Double hooks are used for turning operations, and the double hooks need to be operated synchronously during turning. The hook 33 is lifted, driving the plate unit 200 to lift. When the plate unit 200 reaches the highest point, it turns over to the other side. After the turning is completed, the bolt holes opened on the plate unit 200 are welded and sealed. After the sealing is completed, it is ground flat and subjected to 100% UT + 100% MT inspection.

[0053] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A floor-standing lifting device for large panel units, characterized by: comprising an ear plate, a first clamping plate and a second clamping plate; The ear plates are provided with two identical pieces, the upper end of the ear plates is provided with a hanging hole, and the lower end is provided with a clamping groove; The first clamping plate is provided with one piece, the upper surface of the first clamping plate is connected to the upper wall surface of the clamping groove, and is arranged to form a vertical intersection with the ear plate; The second clamping plates are provided in two pieces, and the lower surfaces of the second clamping plates are respectively connected to the lower wall surfaces of the corresponding clamping grooves and are also arranged to form a vertical intersection with the ear plates; The distance between the lower surface of the first clamping plate and the upper surface of the second clamping plate is used to clamp the plate unit; A plurality of bolt holes are formed on the first clamping plate and the second clamping plate, and bolts are disposed in the bolt holes.

2. The floor-standing turning sling for large panel units according to claim 1, characterized in that: Heavy plates are provided on both side surfaces of the hanging hole.

3. The floor-standing turning sling for large panel units according to claim 1, characterized in that: The depth of the clamping groove = the excess length of the excess end of the plate unit; The height of the clamping groove=the thickness of the first clamping plate+the thickness of the second clamping plate+the thickness of the plate unit.

4. The floor-standing turning sling for large panel units according to claim 1, characterized in that: A plurality of first ribs are provided between the upper surface of the first splint and the side surface of the ear plate; A plurality of second ribs are provided between the lower surface of the second clamping plate and the side surface of the ear plate.

5. The floor-standing turning sling for large panel units according to claim 4, characterized in that: The long side dimension of the second clamping plate = the depth of the clamping groove; The short side dimension of the second plywood is smaller than the distance between two adjacent U-ribs on the plate unit; The short side dimension of the first clamping plate = the depth of the clamping groove; The long side dimension of the first clamping plate=the short side dimension of the second clamping plate*(8-9).

6. The floor-standing turning sling for large panel units according to claim 1, characterized in that: The first clamping plate is provided with three bolt holes respectively near the two end positions and the middle position; The second clamping plate is provided with six bolt holes, and three bolt holes form a group and are respectively located on both sides of the slot.

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