Composite floor slab hoisting tool and construction method thereof

Abstract

The invention relates to the technical field of composite floor slab construction, in particular to a composite floor slab hoisting tool and a construction method thereof.The composite floor slab hoisting tool comprises a frame, a walking track, a reshipment track and a reshipment trolley, the walking track is laid on an installed prefabricated floor slab, and the frame moves on the walking track through walking wheels at the bottom; the two transfer rails are fixedly arranged on the frame and extend forwards to form a transfer cantilever, the transfer trolley moves on the transfer rails, an electric hoist used for hoisting the prefabricated floor slab is arranged on the transfer trolley, and a placing platform located between the transfer rails is arranged on the frame. The composite floor slab hoisting tool is suitable for installation of prefabricated floor slabs of large-span roofs, the construction efficiency is greatly improved through the device, frequent movement of a tower crane is avoided, the construction cost is reduced, and the construction efficiency and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of composite floor slab construction, and in particular to composite floor slab hoisting equipment and a construction method thereof. Background Art

[0002] Composite slab is a type of slab structure composed of prefabricated parts and cast-in-place parts. Prefabricated slabs are usually prefabricated in factories, and their main function is to serve as part of the load-bearing structure of the slab. The cast-in-place layer is a concrete layer poured on site after the prefabricated slabs are installed in place. The truss steel bars of the prefabricated slabs are used to enhance the performance of the prefabricated slabs. They connect the prefabricated concrete slabs with the cast-in-place concrete composite layer so that the two can work better together, enhance the shear resistance of the contact surface, and improve the overall performance of the prefabricated slabs. For the installation of prefabricated slabs on large-span roofs, due to the limited travel of the tower crane, only part of the prefabricated slabs can be hoisted. Even if two tower cranes are placed in two directions respectively, the slabs in the middle area cannot be hoisted into place. Therefore, the tower cranes need to be moved frequently, which reduces the speed of construction and increases the construction cost. In view of this, this case arises. Summary of the invention

[0003] An object of the present invention is to solve at least the above-mentioned problems through a composite floor slab hoisting tool and a construction method thereof.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: the composite floor slab lifting tooling includes a frame, a walking track, a reverse transport track and a reverse transport trolley. The walking track is laid on the installed prefabricated floor slab, and the frame moves on the walking track through the walking wheels at the bottom. Two reverse transport tracks are fixed on the frame and extend forward to form a reverse transport cantilever. The reverse transport trolley moves on the reverse transport track. The reverse transport trolley is provided with an electric hoist for lifting the prefabricated floor slab, and the frame is provided with a placement platform located between the reverse transport tracks.

[0005] Preferably, two walking tracks are laid on each installed prefabricated floor slab, the interval between the two reverse transport tracks is greater than the width of the placement platform, and the width of the placement platform is greater than the width of the prefabricated floor slab.

[0006] Preferably, the walking track is laid on the prefabricated floor slab through a positioning mechanism, and the upper surface of the prefabricated floor slab is provided with a loop of truss steel bars, and the positioning mechanism connects the walking track with the truss steel bars.

[0007] Preferably, the positioning mechanism includes a positioning rail, a positioning block, a bolt and a washer. The positioning rail is fixed to the side of the walking rail, the positioning rail is L-shaped, and the positioning block is U-shaped. One side of the positioning block abuts against the positioning rail, and the other side is provided with a threaded hole. The bolt passes through the truss steel bars of the prefabricated floor and is connected to the threaded hole of the positioning block. The washer is arranged between the bolt and the truss steel bars.

[0008] Preferably, it also includes a counterweight slide rail and a counterweight trolley, wherein the counterweight slide rail is arranged below the placement platform, and the counterweight slide rail extends toward the rear of the frame to form a counterweight cantilever, and the counterweight trolley is slidably arranged on the counterweight slide rail, and the frame, the inverting trolley and the counterweight trolley are moved under the drive of a motor.

[0009] Preferably, the frame is provided with a plurality of anti-overturning ropes, each of which has a hook that can be connected to the truss steel bars.

[0010] Preferably, the electric hoist is connected to the prefabricated floor slab via four lifting ropes.

[0011] The construction method of the composite floor slab hoisting tool comprises the following steps: Step a: The tower crane transports the prefabricated floor slab to be installed to the placement platform of the frame for placement; Step b, the frame carries the prefabricated floor slab to be installed and moves forward on the walking track until the reverse cantilever of the reverse track reaches above the template of the station to be installed; Step c: the inverted transport trolley moves to the top of the prefabricated floor slab to be installed, and the prefabricated floor slab to be installed is lifted by the electric hoist and leaves the placement platform; Step d, the prefabricated floor slab is driven by the reverse transport trolley to continue to move forward along the reverse transport track to the top of the template at the station to be installed; Step e: The electric hoist drives the prefabricated floor slab to be installed to descend onto the template, and the position of the prefabricated floor slab is fine-tuned manually; Step f: The composite floor slab hoisting equipment moves back, the newly installed prefabricated floor slab is welded to the previously installed prefabricated floor slab, and a new walking track is laid on the newly installed prefabricated floor slab.

[0012] Preferably, in step d, when the inverting trolley drives the prefabricated floor slab to move, the counterweight trolley moves in the opposite direction.

[0013] Preferably, in step f, the walking track is connected to the prefabricated floor slab via a positioning mechanism, which specifically includes: laying the walking track on the prefabricated floor slab according to the wheelbase requirement, sleeves are arranged on the outside of the bolts, the bolts pass through the truss steel bars and are connected to the threaded holes of the positioning blocks, at least two positioning mechanisms are respectively provided on both sides of each walking track, and the position of the walking track is fine-tuned by adjusting the bolts.

[0014] From the above description, it can be seen that the composite floor slab lifting tool and the construction method thereof provided by the present invention have the following beneficial effects: the composite floor slab lifting tool of the present invention is used for walking on the installed prefabricated floor slabs, for transferring prefabricated floor slabs, and is suitable for the installation of prefabricated floor slabs on large-span roofs. Since the travel of the tower crane is limited, in order to avoid frequent movement of the tower crane, the construction efficiency is greatly improved by using this device, which avoids frequent movement of the tower crane, reduces construction costs, and improves construction efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the composite floor slab lifting tooling of the present invention.

[0016] Figure 2 for Figure 1 A magnified schematic diagram of a local area.

[0017] Figure 3 It is a schematic diagram of loading prefabricated floor slabs with the composite floor slab lifting tool of the present invention.

[0018] Figure 4 It is a schematic diagram of transporting prefabricated floor slabs by the composite floor slab lifting tool of the present invention.

[0019] Figure 5 It is a schematic diagram of the composite floor slab lifting tooling of the present invention for transporting the prefabricated floor slab. DETAILED DESCRIPTION

[0020] The present invention is further described below through specific implementation modes.

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] As shown in the figure, the composite floor lifting tool of the present invention includes a frame 1, a running track 2, a reverse transport track 3 and a reverse transport trolley 4. The running track 2 is laid on the installed prefabricated floor 10. The frame 1 moves on the running track 2 through the running wheels at the bottom. The two reverse transport tracks 3 are fixed on the frame 1 and extend forward to form a reverse transport cantilever 31. The reverse transport trolley 4 is erected between the two reverse transport tracks 3. The reverse transport trolley 4 moves on the reverse transport track 3. The reverse transport trolley 4 is provided with an electric hoist 41 for lifting the prefabricated floor 10. The frame 1 is provided with a placement platform 5 located between the reverse transport tracks 3. The composite floor slab lifting tool of the present invention is used for walking on the installed prefabricated floor slab 10 and for transferring the prefabricated floor slab 10. It is suitable for the installation of prefabricated floor slabs 10 for large-span roofs. Since the stroke of the tower crane is limited, the prefabricated floor slab 10 in the middle position exceeds the stroke of the tower crane, and the tower crane needs to be frequently moved to complete the installation of the large-span prefabricated floor slab 10. Through this device, the construction efficiency can be greatly improved, the frequent movement of the tower crane can be avoided, the construction cost can be reduced, and the construction efficiency can be improved. The device moves on the installed prefabricated floor 10, and transfers the prefabricated floor 10 to a position outside the travel of the tower crane for installation. The walking track 2 is gradually laid forward from the prefabricated floor 10 at the farthest distance that the tower crane can reach. The tower crane transports the prefabricated floor 10 to be installed to the placement platform 5 of the frame 1. The prefabricated floor 10 moves forward along the walking track 2 with the frame 1 until the inverting cantilever 31 of the inverting track 3 reaches above the template 20 of the installation station. The inverting trolley 4 moves to the top of the prefabricated floor 10 to be installed, and the electric hoist 41 lifts the prefabricated floor 10 to be installed to a certain height. Height, since the inverting cantilever 31 extends from the frame 1, the inverting trolley 4 can drive the precast floor 10 to continue to move forward along the inverting track 3 to above the template 20 of the installation station, and the electric hoist 41 lowers the precast floor 10 to be installed on the inverting cantilever 31 to the template 20, and the position of the precast floor 10 is fine-tuned manually, the composite floor hoisting tool retreats, the newly installed precast floor 10 is welded to the previously installed precast floor 10, and a new walking track 2 is laid on the newly installed precast floor 10, and the above process is repeated until the installation of all the precast floor slabs 10 is completed.

[0023] Two running tracks 2 are laid on each installed prefabricated floor 10. The frame 1 is wide at the top and narrow at the bottom when viewed from the horizontal direction. The interval between the two reverse transport tracks 3 is greater than the width of the placement platform 5, and the width of the placement platform 5 is greater than the width of the prefabricated floor 10. The tower crane bracket places the prefabricated floor 10 on the placement platform 5 for transportation. The prefabricated floor 10 is first transported on the running track 2 by the frame 1, and then transported on the reverse transport track 3 by the reverse transport trolley 4 for the last span.

[0024] The running track 2 is laid on the prefabricated floor 10 through the positioning mechanism 6 . The upper surface of the prefabricated floor 10 is provided with a loop of truss steel bars 101 . The positioning mechanism 6 connects the running track 2 with the truss steel bars 101 .

[0025] like Figure 2 As shown, the positioning mechanism 6 includes a positioning rail 61, a positioning block 62, a bolt 63 and a washer 64. The positioning rail 61 is fixed to the side of the walking track 2. The positioning rail 61 is L-shaped, and the positioning block 62 is U-shaped. One side of the positioning block 62 abuts against the positioning rail 61, and the other side is provided with a threaded hole. The bolt 63 passes through the truss steel bar 101 of the prefabricated floor 10 and is connected with the threaded hole of the positioning block 62. The washer 64 is arranged between the bolt 63 and the truss steel bar 101. The contact surface between the positioning rail 61 and the positioning block 62 is inclined toward one side of the positioning rail 61, and the contact surface between the positioning block 62 and the positioning rail 61 also has the same inclination. During installation, the positioning block 62 is inserted into the positioning rail 61 upside down, and the contact surfaces of the two abut against each other. The rubber gasket 64 is sleeved on the outside of the bolt 63, and the bolt 63 passes through the truss steel bar 101 and is connected to the threaded hole of the positioning block 62. The bolts on both sides are locked and fixed respectively. At least two positioning mechanisms 6 are provided on both sides of each walking track 2. The position of the walking track 2 is positioned by adjusting the bolt 63, so that the walking track 2 can be positioned, installed and disassembled more quickly without welding it to the truss steel bar 101, thereby improving the track laying efficiency.

[0026] like Figure 5 The composite floor hoisting tool also includes a counterweight slide rail 7 and a counterweight trolley 8. The counterweight slide rail 7 is arranged below the placement platform 5. The counterweight slide rail 7 extends to the rear of the frame 1 to form a counterweight cantilever 71. The counterweight trolley 8 is slidably arranged on the counterweight slide rail 7. The frame 1, the inverting trolley 4 and the counterweight trolley 8 move under the drive of the motor. The counterweight trolley 8 is provided with a counterweight to balance the overall counterweight when the prefabricated floor 10 is inverted. When the prefabricated floor 10 is transported toward the inverting cantilever 31, the counterweight trolley 8 moves synchronously toward the counterweight cantilever 71, so that the overall center of the equipment is balanced and will not overturn, thereby ensuring the safety of the construction.

[0027] The frame 1 is provided with a plurality of anti-overturning ropes 12, and the anti-overturning ropes 12 have hooks that can be connected to the truss steel bars 101. When the tooling arrives at the workstation, the anti-overturning ropes 12 are connected to the truss steel bars 101, which can resist the possible overturning of the equipment when transporting the prefabricated floor slabs 10. The anti-overturning ropes 12 are better when combined with the counterweight trolley 8, and can effectively ensure the stability and construction safety during the transportation process.

[0028] The electric hoist 41 is connected to the prefabricated floor 10 via four hoisting ropes.

[0029] The construction method of the composite floor hoisting tooling comprises the following steps: like Figure 1 and 2 As shown, in step a, the tower crane transports the prefabricated floor 10 to be installed to the placement platform 5 of the frame 1 for placement; after the formwork 20 of the floor is installed in place, the prefabricated floor 10 is installed, and the prefabricated floor 10 within the formation range of the tower crane is directly hoisted by the tower crane, which requires manual auxiliary positioning, and the installed prefabricated floor 10 is welded, and the truss steel bars 101 of adjacent floor slabs are connected by steel bar welding. The inverting trolley 4 needs to be moved to the inverting cantilever 31 first, and the space of the placement platform 5 is completely freed up to facilitate the placement of the prefabricated floor 10.

[0030] like Figure 3 As shown, in step b, the frame 1 carries the prefabricated floor slab 10 to be installed and moves forward on the walking track 2 until the reverse cantilever 31 of the reverse track 3 reaches above the template 20 of the station to be installed; Step c, the inverting trolley 4 moves to the top of the prefabricated floor slab 10 to be installed, and the prefabricated floor slab 10 to be installed is lifted by the electric hoist 41 and leaves the placement platform 5; like Figure 5 As shown, in step d, the prefabricated floor 10 is driven by the inverting trolley 4 to continue to move forward along the inverting track 3 to the top of the template 20 at the station to be installed; Step e: the electric hoist 41 drives the prefabricated floor slab 10 to be installed to descend onto the template 20, and the position of the prefabricated floor slab 10 is fine-tuned manually; Step f, the composite floor slab hoisting tool retreats, welds the newly installed prefabricated floor slab 10 with the previously installed prefabricated floor slab 10, and lays a new running track 2 on the newly installed prefabricated floor slab 10. Multiple composite floor slab hoisting tools can be arranged to transport prefabricated floor slabs 10 of different columns, and the composite floor slab hoisting tool is lifted by a tower crane and can be transferred to the running track 2 of different columns.

[0031] In step d, the anti-overturning rope 12 is first connected to the truss steel bar 101 to resist the possible overturning of the equipment when transporting the prefabricated floor slab 10, and then the prefabricated floor slab 10 is driven forward by the inverting trolley 4, and the counterweight trolley 8 moves synchronously in the opposite direction.

[0032] In step f, the walking track 2 is connected to the prefabricated floor 10 through the positioning mechanism 6, which specifically includes: laying the walking track 2 on the prefabricated floor 10 according to the wheelbase requirement, sleeved on the outside of the bolt 63, the bolt 63 passes through the truss steel bar 101 and is connected to the threaded hole of the positioning block 62, and at least two positioning mechanisms 6 are provided on both sides of each walking track 2, and the position of the walking track 2 is fine-tuned by adjusting the bolt 63.

[0033] The above are only some specific implementation methods of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. Composite floor hoisting tool, characterized by: It includes a frame, a walking track, a reverse transport track and a reverse transport trolley. The walking track is laid on the installed prefabricated floor slabs. The frame moves on the walking track through the walking wheels at the bottom. Two reverse transport tracks are fixed on the frame and extend forward to form a reverse transport cantilever. The reverse transport trolley moves on the reverse transport track. The reverse transport trolley is provided with an electric hoist for lifting the prefabricated floor slabs. The frame is provided with a placement platform located between the reverse transport tracks.

2. The composite floor slab hoisting tool according to claim 1, characterized in that: Two walking tracks are laid on each installed prefabricated floor slab, and the interval between the two reverse transport tracks is greater than the width of the placement platform, and the width of the placement platform is greater than the width of the prefabricated floor slab.

3. The composite floor slab hoisting tool according to claim 1, characterized in that: The walking track is laid on the prefabricated floor slab through a positioning mechanism, and the upper surface of the prefabricated floor slab is provided with a loop of truss steel bars. The positioning mechanism connects the walking track with the truss steel bars.

4. The composite floor slab hoisting tool according to claim 3 is characterized in that: The positioning mechanism includes a positioning rail, a positioning block, a bolt and a washer. The positioning rail is fixed to the side of the walking track. The positioning rail is L-shaped and the positioning block is U-shaped. One side of the positioning block abuts against the positioning rail and the other side is provided with a threaded hole. The bolt passes through the truss steel bars of the prefabricated floor and is connected to the threaded hole of the positioning block. The washer is arranged between the bolt and the truss steel bars.

5. The composite floor slab hoisting tool according to claim 1, characterized in that: It also includes a counterweight slide rail and a counterweight trolley. The counterweight slide rail is arranged below the placement platform, and the counterweight slide rail extends toward the rear of the frame to form a counterweight cantilever. The counterweight trolley is slidably arranged on the counterweight slide rail. The frame, the inverting trolley and the counterweight trolley move under the drive of a motor.

6. The composite floor slab hoisting tool according to claim 1, characterized in that: The frame is provided with a plurality of anti-overturning ropes, and the anti-overturning ropes are provided with hooks which can be connected with the truss steel bars.

7. The composite floor slab hoisting tool according to claim 1, characterized in that: The electric hoist is connected to the prefabricated floor slab via four lifting ropes.

8. The construction method of the composite floor slab hoisting tooling according to any one of claims 1 to 7, characterized in that: The steps include: Step a: The tower crane transports the prefabricated floor slab to be installed to the placement platform of the frame for placement; Step b, the frame carries the prefabricated floor slab to be installed and moves forward on the walking track until the reverse cantilever of the reverse track reaches above the template of the station to be installed; Step c: the inverted transport trolley moves to the top of the prefabricated floor slab to be installed, and the prefabricated floor slab to be installed is lifted by the electric hoist and leaves the placement platform; Step d, the prefabricated floor slab is driven by the reverse transport trolley to continue to move forward along the reverse transport track to the top of the template at the station to be installed; Step e: The electric hoist drives the prefabricated floor slab to be installed to descend onto the template, and the position of the prefabricated floor slab is fine-tuned manually; Step f: The composite floor slab hoisting equipment moves back, the newly installed prefabricated floor slab is welded to the previously installed floor slab, and a new walking track is laid on the newly installed prefabricated floor slab.

9. The construction method of the composite floor slab hoisting tooling according to claim 8, characterized in that: In the step d, when the reverse transport trolley drives the prefabricated floor slab to move, the counterweight trolley moves in the opposite direction.

10. The construction method of the composite floor slab hoisting tooling according to claim 8, characterized in that: In the step f, the walking track is connected to the prefabricated floor slab via a positioning mechanism, which specifically includes: laying the walking track on the prefabricated floor slab according to the wheelbase requirement, sleeves are placed on the outside of the bolts, the bolts pass through the truss steel bars and are connected to the threaded holes of the positioning blocks, at least two positioning mechanisms are provided on both sides of each walking track, and the position of the walking track is fine-tuned by adjusting the bolts.

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