Lifting appliance system suitable for assembling type station top plate installation

Abstract

The utility model discloses a lifting appliance system suitable for mounting an assembly type station top plate. The lifting appliance system comprises a lifting appliance component, a rotating structure and a steel wire rope rigging, the lifting appliance component is used for lifting a top plate, one side of the lifting appliance component is open, the lifting appliance component is provided with a cavity, and the cavity is provided with a concrete support and top plate lifting space; the rotating structure comprises a rotating connector located on the upper portion and a connecting batten plate located on the lower portion, and the rotating connector and the connecting batten plate are connected through a rotating bearing. And the batten plate is connected with the top of the lifting appliance component through the steel wire rope rigging. The cavity is provided with a concrete support and top plate lifting space, station top plate lifting operation can be efficiently completed without dismantling the concrete support, and the mounting efficiency is improved; and the construction risk of high-place operation of operators in the splicing process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of subway station construction technology, and in particular to a lifting system suitable for the installation of prefabricated station roof slabs. Background Technology

[0002] Currently, during the assembly of fully prefabricated subway stations, due to the influence of the initial concrete support, some roof slab components cannot be installed in place using the gantry crane. It is necessary to pre-install steel supports, then remove the concrete supports, and finally install the roof slab components below the concrete supports after the system conversion. However, this approach has the following risks and shortcomings: 1. The concrete supports and the retaining structure form a rigid body. After conversion to steel supports, they can only withstand compressive forces, not tensile forces, resulting in poor overall integrity of the support structure system and a high risk of deformation; 2. Removing the concrete supports is slow, affecting the overall assembly progress and extending the assembly period; 3. Before the roof slab is assembled, there is a 10m open surface directly below the removed concrete supports, posing a significant safety risk during the removal operation.

[0003] Among the above technical issues: Technical issue 1: directly affects construction safety and feasibility, as the conversion of the support system can easily cause a change in the internal stress mechanism of the support system; Technical issue 2: directly affects the construction progress, as prolonged concrete support removal operations will lead to a decrease in assembly efficiency and affect the construction period and cost; Technical issue 3: poses a safety hazard, as the removal of concrete supports requires the arrangement and installation of wire saws on the top plate of the previous ring, which is a high-altitude operation near the edge.

[0004] For example, patent CN113200459A discloses a prefabricated subway station roof slab installation adjustable lifting device. The roof slab is assembled from two prefabricated left and right roof slab components, with at least four lifting points distributed along the span of the roof slab, including two near-end lifting points and two far-end lifting points. The lifting device is a lifting trolley that runs on the main beam rail of a crane. The trolley's wire rope is wound on the trolley winch and is wound up and down as the trolley winch rotates. The lifting device also includes hooks set on a horizontal beam, with each hook connected to a corresponding lifting point on the roof slab via wire ropes. If this lifting device is used, the concrete supports will affect the operation, requiring the removal of the concrete supports, affecting construction efficiency, and posing safety risks. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a lifting system suitable for the installation of prefabricated station roof slabs, which can efficiently complete the hoisting operation of station roof slabs without removing concrete supports.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A lifting system suitable for installing prefabricated station roof slabs includes lifting components, a rotating structure, and wire rope slings;

[0008] The lifting device is used to support the top slab. The lifting device has an opening on one side and a cavity that includes space for concrete support and lifting the top slab.

[0009] The rotating structure includes a rotating connector at the top and a connecting plate at the bottom, and the rotating connector and the connecting plate are connected by a rotating bearing.

[0010] The connection between the connecting plate and the top of the lifting device component is achieved using wire rope slings.

[0011] The lifting device component is a "C" shaped lifting device.

[0012] The lower part of the rotary bearing is connected to a steel beam, and a set of connecting plates is provided at the lower part of the steel beam.

[0013] The top of the lifting device component is provided with an upper lifting lug, and the lower end of the wire rope sling is connected to the upper lifting lug.

[0014] The cavity of the lifting device component is provided with a positioning structure for positioning the top plate.

[0015] The positioning structure includes a connected shackle, a top plate component wire rope positioning rigging, and a top plate lifting lug, the top plate lifting lug being located on the inner wall of the lifting component cavity.

[0016] The lifting device components are assembled by welding of structural steel. The lifting device components include a top plate, a bottom plate, and a connecting vertical plate. The top plate and the bottom plate are connected to each other on the same side by welding the connecting vertical plate.

[0017] The wire rope rigging between the connecting plate and the top of the lifting device component uses a combination of two wire ropes.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] The lifting system for installing prefabricated station roof slabs is reasonably designed. The cavity of the "C"-shaped lifting tool has space to encompass the concrete support and lift the roof slab. The station roof slab can be lifted efficiently without removing the concrete support, which improves the installation efficiency and avoids the construction risks of workers working at heights during the assembly process. Attached Figure Description

[0020] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0021] Figure 1 This is a schematic diagram of the lifting device system of this utility model.

[0022] Figure 2 This is a side view of the lifting system of this utility model.

[0023] In the picture:

[0024] 1-Precast roof slab; 2-Shackle; 3-Roof slab component wire rope positioning sling; 4-Roof slab lifting lug; 5-Concrete support; 6-“C” shaped steel component a; 7-Upper lifting lug; 8-Wire rope sling a; 9-Connecting plate a; 10-Steel crossbeam; 11-Rotary bearing; 12-Rotary connector; 13-“C” shaped steel component b; 14-“C” shaped steel component c; 15-“C” shaped steel component d; 16-Wire rope sling b; 17-Connecting plate b; 18-Wire rope sling c; 19-Connecting plate c; 20-Wire rope sling d; 21-Connecting plate d. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0026] like Figure 1 and Figure 2 As shown, the lifting system suitable for installing prefabricated station roof slabs includes a lifting component, a rotating structure, and wire rope slings. The lifting component is used to support the roof slab, with an opening on one side and a cavity that includes space for concrete support and roof slab support. The rotating structure includes a rotating connector at the top and a connecting plate at the bottom, which are connected by a rotating bearing. The connecting plate and the top of the lifting component are connected by wire rope slings.

[0027] Preferably, the lifting device is a "C" shaped lifting device; the swivel connector can also be a powered connector; the lower part of the swivel bearing is connected to a steel beam, and a set of connecting plates is provided at the lower part of the steel beam. A "C" shaped lifting device is hoisted under each connecting plate by a wire rope, and the top plate is hoisted stably and reliably by a set of "C" shaped lifting devices.

[0028] The wire rope sling connecting the gusset plate and the top of the lifting device uses a combination of two wire ropes. The top of the lifting device has an upper lifting lug, and the lower end of the wire rope is connected to the upper lifting lug; the structure is simple, stable, and reliable. The specifications and lengths of the two wire ropes are determined based on the total weight of the top plate and the "C"-shaped lifting device assembly.

[0029] Furthermore, the "C"-shaped spreader adopts a welded steel assembly. The spreader components include a top plate, a bottom plate, and a connecting vertical plate. The top plate and the bottom plate are connected to each other on the same side by welding the connecting vertical plate. Its size can be adjusted according to the weight of the top plate to ensure that the "C"-shaped spreader has sufficient load-bearing capacity and rigidity.

[0030] The cavity of the lifting device component is equipped with a positioning structure for positioning the top plate. Preferably, the positioning structure includes a connected shackle, a steel wire rope positioning sling for the top plate component, and a top plate lifting lug, which is located on the inner wall of the cavity of the lifting device component. The steel wire rope positioning sling for the top plate component uses a single steel wire rope; it is composed of a single steel wire rope and a lifting spike, and its specifications and length are determined according to the internal cavity space of the "C"-shaped lifting device.

[0031] This utility model includes a C-shaped lifting device assembly, upper and lower rigging, and a rotating device. The C-shaped lifting device is a steel structure with an internal C-shaped cavity that encompasses the space for concrete support and lifting the roof slab. The upper and lower rigging consists of an upper rigging and a lower rigging. The upper rigging connects the C-shaped lifting device to the rotating device, while the lower rigging connects the roof slab components to the roof slab. The rotating structure allows for 360° rotation of the entire C-shaped lifting device assembly, ensuring consistent movement of the assembly. The entire system enables precise and rapid installation of roof slabs under concrete support without removing the concrete supports.

[0032] The preferred specific example of this utility model is as follows:

[0033] like Figure 1 and Figure 2 As shown, this utility model provides an installation device and its usage method suitable for the construction of a fully prefabricated station roof slab without the need for dismantling the first concrete support. The "C"-shaped lifting system includes: a prefabricated roof slab 1; a shackle 2; a roof slab component wire rope positioning sling 3; a roof slab lifting lug 4; a concrete support 5; a "C"-shaped steel component a 6; an upper lifting lug 7; a wire rope sling a 8; a connecting plate a 9; a steel beam 10; a rotary bearing 11; a rotary connector 12; a "C"-shaped steel component b 13; a "C"-shaped steel component c 14; a "C"-shaped steel component d 15; a wire rope sling b 16; a connecting plate b 17; a wire rope sling c 18; a connecting plate c 19; a wire rope sling d 20; and a connecting plate d 21.

[0034] The "C"-shaped lifting assembly has the load-bearing capacity to support the roof slab and consists of four "C"-shaped steel components; upper and lower rigging, with the lower rigging being the steel wire rope rigging for the roof slab components, connecting the "C"-shaped components to the roof slab; the upper rigging connecting the rotating device to the "C"-shaped lifting assembly to ensure the overall system is coordinated; and the rotating structure having the function of horizontally rotating the lower "C"-shaped steel assembly and the roof slab.

[0035] The C-shaped steel component is composed of four C-shaped steel sections. A soft pad is placed on the contact surface with the top plate to prevent friction damage. The top plate is connected to the C-shaped component via wire rope slings to prevent slippage. The wire rope slings connect the top plate, the C-shaped lifting assembly, and the rotating structure into a unified system. The rotating structure has a 360° rotation function, enabling horizontal adjustment of the lower top plate and rotation of the end positions, achieving efficient installation.

[0036] The method of using a lifting system suitable for installing prefabricated railway station roof slabs includes the following steps:

[0037] S1. On the ground, place the C-shaped steel components a, b, c, and d together on the underside of the precast roof slab. The roof slab is positioned using steel wire rope positioning slings. The gantry crane is then lifted, and steel wire rope slings a, b, c, and d are used to connect the crane to the upper rotating bearing and rotating connector. After the entire precast roof slab is lifted, the overall weight of the precast roof slab is borne by the C-shaped steel component assembly.

[0038] S2. Use the gantry crane to move the precast top slab and lifting system to the assembly point. Lower the precast top slab and lifting system from the front of the concrete support. When the top slab reaches the assembly height, slowly move it horizontally towards the concrete support. The rotating connector can be used to rotate and adjust the precast top slab horizontally to ensure that the tenons of the components can be smoothly inserted into the groove.

[0039] S3. When the top plate reaches the assembly point, the assembly operation is carried out. The operator disconnects the steel wire rope positioning rigging assembly of the top plate components from each "C" shaped steel component.

[0040] S4. The lifting system moves horizontally away from the concrete support until the concrete support leaves the cavity of the steel component and the lifting component is lifted out vertically.

[0041] S5. Repeat the above operation process to assemble the next top slab that is affected by concrete support.

[0042] This utility model relates to a lifting system and its usage method for installing prefabricated station roof slabs. The design is reasonable, and the cavity of the "C"-shaped lifting device has space to encompass the concrete support and lift the roof slab. The station roof slab can be lifted efficiently without removing the concrete support, thus improving installation efficiency. It also avoids the construction risks of workers working at heights during the assembly process.

[0043] The above description is only a preferred embodiment of the present utility model. The above technical features can be arbitrarily combined to form multiple embodiments of the present utility model.

[0044] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A lifting system suitable for installing prefabricated railway station roof slabs, characterized in that: include: The lifting device is used to support the top slab. The lifting device has an opening on one side and a cavity that includes space for concrete support and lifting of the top slab. A rotating structure, comprising a rotating connector at the upper part and a connecting plate at the lower part, wherein the rotating connector and the connecting plate are connected by a rotating bearing; Wire rope slings are used to connect the connecting plate and the top of the lifting device components.

2. The lifting system for installing prefabricated station roof slabs as described in claim 1, characterized in that: The lifting device component is a "C" shaped lifting device.

3. The lifting system for installing prefabricated station roof slabs as described in claim 1, characterized in that: The lower part of the rotary bearing is connected to a steel beam, and a set of connecting plates is provided at the lower part of the steel beam.

4. The lifting system for installing prefabricated station roof slabs as described in claim 1, characterized in that: The top of the lifting device component is provided with an upper lifting lug, and the lower end of the wire rope sling is connected to the upper lifting lug.

5. The lifting system for installing prefabricated station roof slabs as described in claim 1, characterized in that: The cavity of the lifting device component is provided with a positioning structure for positioning the top plate.

6. The lifting system for installing prefabricated station roof slabs as described in claim 5, characterized in that: The positioning structure includes a connected shackle, a top plate component wire rope positioning rigging, and a top plate lifting lug, the top plate lifting lug being located on the inner wall of the lifting component cavity.

7. The lifting system for installing prefabricated station roof slabs as described in claim 2, characterized in that: The lifting device components are assembled by welding of structural steel. The lifting device components include a top plate, a bottom plate, and a connecting vertical plate. The top plate and the bottom plate are connected to each other on the same side by welding the connecting vertical plate.

8. The lifting system for installing prefabricated station roof slabs as described in claim 1, characterized in that: The wire rope rigging between the connecting plate and the top of the lifting device component uses a combination of two wire ropes.

Images