Top protruding structure of newly-added machine-room-free elevator of existing building

Abstract

The utility model discloses a top protruding structure of a newly-added machine-room-free elevator of an existing building. By arranging the top protruding structure on the roof layer of the newly-added elevator area of the existing building, the load of the elevator without the machine room is completely transmitted to the erecting beams and is directly transmitted to the frame columns of the existing building through the erecting beams, so that the reinforcement amount of peripheral beams of the elevator shaft is greatly reduced, and even the roof layer of the existing building cannot be damaged due to the fact that the elevator shaft is holed and floor slabs are removed. The weight is reduced, existing beams around the hoistway are not reinforced, and great social benefits and economic benefits are obtained.

Description

Technical Field

[0001] The utility model relates to a raised structure on the top of an elevator, in particular to a raised structure on the top of a machine roomless elevator newly added to an existing building. Background Art

[0002] With the development of social economy, we have entered the era of urban renewal.

[0003] As the demand for building functions continues to increase, the upgrading and renovation of existing buildings has attracted widespread attention from the society, especially the old multi-story buildings designed and built over the years, which have no elevators. With the continuous improvement of people's requirements for building comfort, adding elevators has become an important task in building renewal and improvement.

[0004] New elevators in existing buildings generally adopt a machine-room-less structure, which has a minimal impact on building height. There's no need for a machine room on the rooftop. Only localized openings and elevations are required in the hoistway area where the top floor's elevation doesn't meet the elevator's requirements. This elevation can often be shielded by existing building parapets, minimizing the impact on the building's facade planning and sunlight. However, since the load of a machine-room-less elevator is essentially transferred to the rooftop, it significantly impacts the surrounding structure of the elevator hoistway, necessitating significant reinforcement work and requiring caution. Otherwise, it could lead to serious safety incidents.

[0005] In response to the above situation, a large number of engineering and technical personnel have developed many methods to optimize the top structure of new machine room-less elevators in existing buildings to reduce their impact on existing buildings. Each method has its own characteristics and scope of application, and all need to be optimized based on the characteristics of the building where the elevator is to be added. Utility Model Content

[0006] In order to solve the technical problems existing in the known technology, the utility model provides a raised structure on the top of an existing building without a machine room, which can achieve the purpose of adding an elevator with as little disturbance as possible to the roof structure of the existing building, with high reliability, high efficiency and low cost.

[0007] The utility model adopts the following technical solutions to solve the technical problems existing in the known technology: a top raised structure for a newly added machine room-less elevator in an existing building, that is, a top raised structure is arranged in the newly added elevator shaft area on the roof layer of the existing building, the top raised structure is composed of a flying beam and a top plate, the flying beam is divided into a main flying beam and a secondary flying beam, both ends of the main flying beam are supported on the frame columns of the roof layer of the existing building, the secondary flying beam is supported on the main flying beam, and a gap is left between the lower part of the flying beam and the top of the surrounding beam of the elevator shaft on the roof layer of the existing building, which is filled with elastic material, and the top plate is supported on the flying beam.

[0008] The material of the overpass beam is reinforced concrete.

[0009] The top plate material is reinforced concrete.

[0010] A gap of ≥5 cm is left between the lower part of the overpass beam and the top of the beam surrounding the elevator shaft on the roof of the existing building, and is not less than the deflection of the overpass beam. The gap filling material is an elastic deformation material.

[0011] The gap filling material can prevent load transfer between the overpass beam and the surrounding beams of the elevator shaft on the roof of the existing building.

[0012] The main frame cross beam is connected to the roof frame column of the existing building by planting reinforcement.

[0013] The raised structure on the top of the newly added machine room-less elevator needs to be covered on all sides with flexible waterproof materials and the top plate of the existing building roof structure.

[0014] The load of the newly added machine room-less elevator in the existing building is transferred to the overpass beam.

[0015] The advantages and positive effects of the present invention are as follows: by arranging a top raised structure on the roof layer of the newly added elevator area of ​​the existing building, the load of the machine room-less elevator is completely transferred to the overflying beam, which is then directly transferred to the frame columns of the existing building. As a result, the reinforcement amount of the beams around the elevator shaft is greatly reduced. Even the weight of the roof layer of the existing building is reduced due to the removal of the floor slab due to the opening of the elevator shaft, and the existing beams around the shaft do not need to be reinforced, thereby achieving greater social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a top view of the roof top plate of an existing building of the present invention;

[0017] Figure 2 This is a top view of the newly added raised structure on the top of the machine roomless elevator of the present invention.

[0018] Figure 3 It is a side schematic diagram of the utility model.

[0019] In the figure: 1. Existing frame columns; 2. Existing or newly added beams around the elevator car on the roof of the existing building; 3. Elevator car; 4-1. Main frame overhang beam; 4-2. Secondary frame overhang beam; 5. Top plate; 6. Embedded reinforcement connection between the main frame overhang beam and the existing frame columns; 7. Elastic filling material. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0021] See also Figure 1-3A raised structure is added to the top of an existing building without a machine room. An elevator opening is opened on the roof floor of the existing building. The size of the opening is determined according to the size of the elevator car 3. The existing or newly added beams 2 on the roof around the elevator car 3 are used to enclose the opening of the elevator car 3. The existing or newly added beams 2 on the roof transfer the roof load to the existing frame columns 1.

[0022] A main frame leaping beam 4-1 is set above the roof floor of the existing building, which is connected to the existing frame column by means of embedded reinforcement 6. The secondary frame leaping beam 4-2 is supported on the main frame leaping beam 4-1, and the top plate 5 is supported on the main frame leaping beam 4-1 and the secondary frame leaping beam 4-2. A gap is set between the lower part of the leaping beam and the top of the beam 2 surrounding the elevator shaft on the roof floor of the existing building, which is filled with elastic filling material 7. The gap is not less than 5 cm and not less than the deflection of the leaping beam. No load transfer occurs between the leaping beams 4-1, 4-2 and the existing beams 2. The top load of the machine roomless elevator is fully transferred to the leaping beams 4-1, 4-2. Flexible waterproof material is used to cover the newly added raised structure and the roof slab of the existing building to prevent rainwater and the like from entering the elevator shaft.

[0023] This method achieves the goal of transferring the load of the newly added machine-room-less elevator to the raised structure, and then from there to the existing frame columns. Compared to the conventional method of transferring the load of the newly added machine-room-less elevator to the existing structural beams surrounding the elevator shaft, this method is more reliable, significantly reduces the disturbance of the new elevator load on the existing building, and significantly reduces the reinforcement workload for the beams surrounding the shaft at the roof level of the existing building. This provides a valuable reference for upgrading and retrofitting existing buildings with new elevators, and has significant social and economic benefits.

[0024] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the scope of protection of the present invention.

Claims

1. A raised structure on the top of a newly added machine room-less elevator in an existing building, characterized in that A top raised structure is set in the newly added elevator shaft area on the roof of an existing building. The top raised structure is composed of a flying beam and a top plate. The flying beam is divided into a main flying beam and a secondary flying beam. Both ends of the main flying beam are supported on the frame columns of the roof of the existing building, and the secondary flying beam is supported on the main flying beam. There is a gap between the lower part of the flying beam and the top of the surrounding beams of the elevator shaft on the roof of the existing building, which is filled with elastic material. The top plate is supported on the flying beam.

2. The top raised structure of a newly added machine room-less elevator in an existing building according to claim 1 is characterized in that: The material of the overpass beam is reinforced concrete.

3. The top raised structure of a newly added machine room-less elevator in an existing building according to claim 1 is characterized in that: The top plate material is reinforced concrete.

4. The top raised structure of a newly added machine room-less elevator in an existing building according to claim 1 is characterized in that: A gap of ≥5 cm is left between the lower part of the overpass beam and the top of the beam surrounding the elevator shaft on the roof of the existing building, and is not less than the deflection of the overpass beam. The gap filling material is an elastic deformation material.

5. The top raised structure of a newly added machine room-less elevator in an existing building according to claim 1 is characterized in that: The raised structure on the top of the newly added machine room-less elevator needs to be covered on all sides with flexible waterproof materials and the top plate of the existing building roof structure.

6. The top raised structure of a newly added machine room-less elevator in an existing building according to claim 1 is characterized in that: The load of the newly added machine room-less elevator in the existing building is transferred to the overpass beam.

7. The top raised structure of a newly added machine room-less elevator in an existing building according to claim 2 is characterized in that: The main frame cross beam is connected to the roof frame column of the existing building by planting reinforcement.

8. The top raised structure of a newly added machine room-less elevator in an existing building according to claim 4 is characterized in that: The gap filling material can prevent load transfer between the overpass beam and the surrounding beams of the elevator shaft on the roof of the existing building.

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