Lifting device for quickly dismantling bailey truss with limited height

Abstract

The lifting device comprises a plurality of lifting appliances, the lifting appliances are arranged above reserved holes in the two sides of an elevated layer plate face in rows, each lifting appliance comprises a base, lifting holes matched with the reserved holes in the elevated layer plate face are formed in the bases in an up-and-down penetrating mode, and the lifting appliances are connected with the lifting holes in an up-and-down penetrating mode. A lifting hole is formed in the base, a portal frame is erected above the lifting hole in the base, a lifting seat is arranged on a cross beam of the portal frame, an electric hoist matched with the lifting hole is arranged at the bottom end of the lifting seat, and a lifting rope is arranged at a lifting hook of the electric hoist. The lifting appliance belongs to the technical field of lifting appliances, can lift the bailey truss spandrel girder of the bailey truss from the upper part to apply upward acting force, is convenient for dismantling a pillar of the bailey truss, can stably descend the bailey truss spandrel girder to a support on the ground, is convenient for workers to dismantle a frame of the bailey truss, and is convenient for workers to use. And the situation that workers need high-altitude action to disassemble the frame of the bailey truss is avoided, the safety is good, and the disassembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lifting devices, in particular to a lifting device for rapid dismantling of limited-height Bailey truss. BACKGROUND

[0002] Bailey truss is also called assembled highway steel bridge. Bailey truss is a steel frame forming a certain unit, which can be used to splice and assemble into many components and equipment. In infrastructure construction, Bailey truss is also widely used as a temporary support structure for the formwork construction of the bridge deck of an elevated bridge. After the construction, the formwork and the Bailey truss need to be dismantled. However, due to the small height from the ground of some elevated bridges, the space is limited, and it is inconvenient to use a lifting crane to lift the Bailey truss out of the outside of the bridge bottom. The prior art is to set up a lifting device under the Bailey truss to temporarily support the Bailey truss, then remove the support under the Bailey truss, then lower the height of the Bailey truss by the lifting device, and finally use the crane to lift the Bailey truss out of the outside of the bridge bottom. Such operation needs to set up a jack device with a lifting height of several meters, which is high in cost and very troublesome and low in efficiency.

[0003] Therefore, it is necessary to provide a lifting device for rapid dismantling of limited-height Bailey truss. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a lifting device for rapid dismantling of limited-height Bailey truss.

[0005] The lifting device for rapid dismantling of limited-height Bailey truss comprises a plurality of lifting devices arranged in rows above the reserved holes on both sides of the elevated deck. Each lifting device comprises a base, a lifting hole corresponding to the reserved hole of the elevated deck is provided through the base from top to bottom, a portal is arranged above the lifting hole on the base, a lifting seat is arranged on the crossbeam of the portal, an electric hoist corresponding to the lifting hole is arranged at the bottom end of the lifting seat, and a lifting rope is arranged at the hook of the electric hoist.

[0006] Further, the base comprises two first I-beam structures arranged transversely and two second I-beam structures arranged longitudinally, the upright columns on both sides of the portal are third I-beam structures arranged vertically on the first I-beam structures, and the crossbeam of the portal is a fourth I-beam structure connecting the two third I-beam structures.

[0007] Further, the two first I-beam structures and the two second I-beam structures are fixedly connected by welding, the bottom end of the third I-beam structure is fixedly connected to the first I-beam structure by welding, and the fourth I-beam structure is fixedly connected to the top end of the third I-beam structure by welding.

[0008] Further, the middle support plates of the two second I-shaped steel structures are provided with through holes arranged in the transverse direction, the through holes are provided with guide pipes, the guide pipes are slidably provided with connecting rods, and the connecting rods are used for connecting the bases of two adjacent lifting devices.

[0009] Further, the two ends of the connecting rod are provided with limiting nuts.

[0010] Further, the lifting seat is provided with a plurality of vertical limiting vertical rods, a steel wire rope sling is arranged around the cross beam between two limiting vertical rods, and a hook at the top of the electric hoist is connected with the steel wire rope sling.

[0011] Further, the lifting seat is a connecting plate fixedly connected with the flat plate of the fourth I-shaped steel structure through welding, and the flat plate of the fourth I-shaped steel structure is provided with a through hole through which the limiting vertical rod passes.

[0012] Further, the two ends of the third I-shaped steel structure are provided with fifth I-shaped steel structures connected with the top surface of the first I-shaped steel structure.

[0013] Compared with the prior art, the lifting device for quick dismantling of the limited-height Bailey frame has the following beneficial effects:

[0014] The lifting device for quick dismantling of the limited-height Bailey frame can lift the Bailey frame bearing beam of the Bailey frame from the top to exert an upward force, so that the column of the Bailey frame can be dismantled, the Bailey frame bearing beam can be stably lowered onto the support on the ground, workers can conveniently disassemble the frame of the Bailey frame, the workers do not need to act from a high altitude to disassemble the frame of the Bailey frame, safety is good, the labor intensity of the workers is reduced, the dismantling efficiency is improved, and the problem that the Bailey frame located at a limited height is difficult to be temporarily supported by a conventional machine in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 is a structure diagram of the lifting device for quick dismantling of the limited-height Bailey frame of the present application;

[0017] Figure 2 is an enlarged perspective view of the lifting device in the present application;

[0018] Figure 3It is the structure enlarged front view of the lifting appliance in the utility model;

[0019] Figure 4 It is the structure enlarged side view of the lifting appliance in the utility model.

[0020] Mark explanation: 1, lifting appliance;2, base;21, first I-steel structure;22, second I-steel structure;3, lifting hole;4, portal;41, crossbeam;42, stand;5, through hole;6, lifting seat;7, electric hoist;8, lifting rope;9, guide pipe;10, connecting rod;11, limit nut;12, limit stand;13, wire rope lifting ring;14, fifth I-steel structure;100, high level plate surface;101, reserved hole;200, bailey support load beam. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0022] The embodiments of the present application are described below according to the overall structure of the present application.

[0023] Referring to Figures 1-4 As shown in the figure, the embodiment provides a lifting device for quick removal of limited height bailey support, which comprises a plurality of lifting appliances 1, a plurality of the lifting appliances 1 are arranged in rows above the reserved hole 101 on both sides of the high level plate surface 100, each lifting appliance 1 comprises a base 2, the base 2 is provided with a lifting hole 3 passing through up and down, which is matched with the reserved hole 101 of the high level plate surface 100, a portal 4 is arranged above the lifting hole 3 on the base 2, a lifting seat 6 is arranged on the crossbeam 41 of the portal 4, the bottom end of the lifting seat 6 is provided with an electric hoist 7 matched with the lifting hole 3, the lifting hook of the lifting hole 3 can pass through the lifting hole 3 downward, the lifting hook of the electric hoist 7 is provided with a lifting rope 8 connected with the bailey support load beam 200.

[0024] The utility model discloses a hoisting device for limited height bailey truss quick dismantling, through setting two rows of reserved openings 101 on the both sides of high -elevation floor slab 100 when pouring high -elevation floor slab 100, then placing hoist 1 above two rows of reserved openings 101, and hoist 1 of the same side is arranged in rows, and the electric hoist 7 set up on a plurality of hoists 1 is linked through the conventional control circuit, guarantees that all electric hoists 7 can drive the lifting rope 9 to go up or descend simultaneously, through the hoisting device, the bailey truss bearing beam 200 of bailey truss can be lifted from above to exert the upward force, so as to dismantle the column of bailey truss, then can make the lifting rope 8 and bailey truss bearing beam 200 descend to the support on the ground through the control of multiple electric hoists 7 simultaneously, the frame of bailey truss is dismantled conveniently for the worker, avoids the frame of bailey truss to be dismantled by the worker and needs high altitude effect, safety is good, reduces the labor intensity of the worker, improves the dismantling efficiency.

[0025] Specifically, referring to Figures 2-4 The base 2 includes two first I-beam structures 21 arranged transversely and two second I-beam structures 22 arranged longitudinally, the stand 42 on the two sides of the portal frame 4 is a third I-beam structure arranged vertically on the first I-beam structure 21, and the crossbeam 41 of the portal frame 4 is a fourth I-beam structure connecting the two third I-beam structures.

[0026] The two first I-beam structures 21 and the two second I-beam structures 22 are fixedly connected by welding, the bottom end of the third I-beam structure is fixedly connected to the first I-beam structure 21 by welding, and the fourth I-beam structure is fixedly connected to the top end of the third I-beam structure by welding. In this embodiment, the base 2 is composed of a plurality of I-beams fixedly connected by welding, which is simple to manufacture and structurally firm.

[0027] Specifically, referring to Figures 2-4 The middle support plate of each second I-beam structure 22 is provided with a through hole 5 arranged transversely, the through hole 5 is provided with a guide pipe 9, the guide pipe 9 is slidably connected to a connecting rod 10 arranged therein, and the connecting rod 10 is used to connect the bases 2 of two adjacent hoists 1. In this embodiment, the connecting rod 10 can slide horizontally under the guidance of the guide pipe 9 and can be connected to the guide pipe 9 of another hoist 1, so as to connect the bases 2 of the two hoists 1 and limit the two hoists 1 transversely, preventing the relative displacement of the two adjacent hoists 1 when hoisting the bailey truss bearing beam 200.

[0028] Specifically, referring to Figures 2-4The connecting rod 10 is a double-end screw rod structure, the two ends of the connecting rod 10 are provided with limiting nuts 11, four limiting nuts 11 are arranged on the connecting rod 10, and every two limiting nuts 11 abut against the two end faces of the guide pipe 9, so that the connecting rod 10 and the guide pipe 9 are fixedly connected together.

[0029] Specifically, referring to Figures 2-4 The hanging seat 6 is provided with a plurality of vertical limiting vertical rods 12, a steel wire rope sling 13 is arranged around the cross beam 41 between every two limiting vertical rods 12, and the hook at the top of the electric hoist 7 is connected with the steel wire rope sling 13. The limiting vertical rod 12 can limit the steel wire rope sling 13, prevent the steel wire rope sling 13 from sliding, prevent the electric hoist 7 from moving longitudinally in a large amplitude, and ensure that the electric hoist 7 can stably lift the Bailey support beam 200.

[0030] Specifically, referring to Figures 2-4 The hanging seat 6 is a connecting plate fixedly connected with the flat plate of the fourth I-shaped steel structure through welding, the connecting plate is fixed on the opposite faces of the two flat plates of the fourth I-shaped steel structure through welding, the flat plate of the fourth I-shaped steel structure is provided with a perforation for the limiting vertical rod 12 to pass through, and the limiting vertical rod 12 is connected with the connecting plate by passing through the flat plate of the fourth I-shaped steel structure.

[0031] Specifically, referring to Figures 2-4 The two ends of the third I-shaped steel structure are provided with a fifth I-shaped steel structure 14 connected with the top face of the first I-shaped steel structure 21, the fifth I-shaped steel structure 14 is arranged obliquely, and the fifth I-shaped steel structure 14 plays a role of reinforcing rib to ensure the structural firmness of the portal frame 4.

[0032] The technical features of the above embodiments can be combined in any manner, and in order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0033] The above embodiments only express one or several embodiments of the application, the description is more specific and detailed, but it cannot be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are all within the protection scope of the application. Therefore, the protection scope of the patent of the application should be subject to the appended claims.

Claims

1. A hoisting device for rapid dismantling of a limited height Bailey truss, characterized in that, The utility model provides a kind of crane (1) for high-level floor, including multiple crane (1), multiple described crane (1) is arranged in row above the reserved hole (101) of high-level floor (100) two sides, each described crane (1) includes base (2), the through hole (3) that is adapted with the reserved hole (101) of high-level floor (100) is located inside up and down in the base (2), door frame (4) is set up on the base (2) above the upper side of through hole (3), the crossbeam (41) of door frame (4) is equipped with hanger (6), the bottom end of hanger (6) is equipped with electric hoist (7) with the through hole (3) adaptation, the hook of electric hoist (7) is equipped with lifting rope (8).

2. A hoisting device for rapid dismantling of limited height Bailey truss according to claim 1, characterized in that, The base (2) includes two first I-beam structures (21) arranged transversely and two second I-beam structures (22) arranged longitudinally, the upright columns (42) on both sides of the door frame (4) are third I-beam structures vertically arranged on the first I-beam structures (21), and the crossbeams (41) of the door frame (4) are fourth I-beam structures connecting the two third I-beam structures.

3. A hoisting device for rapid dismantling of limited height Bailey truss according to claim 2, characterized in that, The two first I-beam structures (21) and the two second I-beam structures (22) are fixedly connected by welding, the bottom ends of the third I-beam structures are fixedly connected with the first I-beam structures (21) by welding, and the fourth I-beam structures are fixedly connected with the top ends of the third I-beam structures by welding.

4. A hoisting device for rapid dismantling of limited height Bailey truss according to claim 2, characterized in that, The middle support plates of the two second I-beam structures (22) are provided with through holes (5) arranged transversely, the through holes (5) are provided with guide pipes (9), the connecting rods (10) are slidably arranged in the guide pipes (9), and the connecting rods (10) are used to connect the bases (2) of two adjacent cranes (1).

5. A hoisting device for rapid dismantling of limited height Bailey truss according to claim 4, characterized in that, The connecting rods (10) are provided with limiting nuts (11) at both ends.

6. A hoisting device for quick dismantling of limited height Bailey truss according to claim 2 or 3 or 4 or 5, characterized in that, The hangers on the top of the electric hoists (7) are connected with the steel wire rope rings (13) arranged around the crossbeams (41).

7. A hoisting device for rapid dismantling of limited height Bailey truss according to claim 6, characterized in that, The hangers on the top of the electric hoists (7) are connected with the steel wire rope rings (13) arranged around the crossbeams (41).

8. A hoisting device for rapid dismantling of limited height Bailey truss according to claim 6, characterized in that, The hangers on the top of the electric hoists (7) are connected with the steel wire rope rings (13) arranged around the crossbeams (41). The two ends of the third I-beam structure are provided with fifth I-beam structures (14) connected with the top surfaces of the first I-beam structures (21).

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