CN113175203A

CN113175203A - Method for setting lifting power equipment in attached lifting scaffold

Info

Publication number: CN113175203A
Application number: CN202110493917.XA
Authority: CN
Inventors: 苏思月; 苏泉云; 苏茂兵; 苏燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-07-27
Also published as: WO2022233156A1

Abstract

The method for setting the hoisting power equipment in the attached lifting scaffold is to set the hoisting power equipment at a hoisting support structure which is firmly connected with a building. The lifting power equipment is arranged at a position higher than the lower bottom plane of the lifting support structure, and the vertical height between the bottom plane of the lifting power equipment and the lower bottom plane of the lifting support structure where the lifting power equipment is arranged is adapted to the sum of the minimum structural vertical heights of the lifting power equipment, including the driving mechanism, the lifting transmission structure connected with the driving mechanism and the lifting structure including the connecting structures, in the lifting operation. The setting method can reduce the height of the reserved lifting space of the lifting power equipment in the traditional attached lifting scaffold from at least two lifting height units to only one lifting height unit, can greatly reduce the economic value of construction material and energy consumption cost, and can remarkably improve the safety of falling prevention and overturning prevention of the scaffold.

Description

Method for setting lifting power equipment in attached lifting scaffold

Technical Field

The invention relates to a method for arranging lifting power equipment in an attached lifting scaffold for suspended lifting operation in the field of buildings.

Background

With the development of socio-economic, especially in cities, high-rise and super high-rise buildings have become widespread, and the construction equipment and construction methods thereof are continuously updated. Present high-rise and super high-rise building's construction, basically do not adopt the tradition to have built the firm fixed scaffold of full height who stands on ground, but construct with the inserted lift scaffold of liftable, through only need constructing the inserted lift scaffold of limited high liftable operation, set up in completion partial building outlying many hoisting power equipment by encircleing, through the synchronous interoperation of crowd's machine, according to the construction height needs of each operation stage of the different building of establishing, with the standard height of this construction stage as the lift height unit at every turn, after pulling the lift of inserted lift scaffold one by hoisting power equipment, rely on this unsettled inserted lift scaffold to be under construction. For example, in the construction of high-rise buildings, the floor heights of the built buildings are used as the lifting height units, the building structure height of the used attached lifting scaffold is generally only required to cover the floor heights of 4-5 building floors, and the attached lifting scaffold is gradually lifted through the group-machine synchronous operation of lifting power equipment surrounding each lifting point distributed at the periphery of the built buildings, and then the construction operation is carried out layer by layer. The construction mode can greatly save various construction materials and energy consumption for building the scaffold, has great economic value, can meet the construction requirements of buildings with any height, and has the advantages of energy conservation, consumption reduction and environmental protection along with the increase of the building construction height.

At present, hoisting power equipment for lifting an attached lifting scaffold is mostly a low-speed loop chain electric hoist commonly called an electric hoist, and main structural components comprise a driving mechanism, lifting transmission structures such as lifting chains connected with the driving mechanism, and connecting structures connected with the attached lifting scaffold and the like. During construction, the electric hoist is hung below a hoisting bearing support structure such as a hoisting outrigger and the like which is stably connected in a building structure layer by using a connecting structure such as an upper hook and the like, and the lifting transmission structure such as a driving mechanism, a lifting and pulling chain and the like and the corresponding connecting structure are connected with a scaffold, so that the scaffold is lifted and positioned in a suspension way. Taking the building construction at present as an example, in an attached lifting scaffold with the total height of 4-5 building floor heights, the height of a space reserved for an electric hoist to lift and run is usually not less than 2 floor heights, otherwise, the requirements of normal lifting and construction operation cannot be met. This is because each structural member in the "electric hoist" suspended below a load-bearing support structure such as a crane boom has its own structural height/length. For example, the minimum distance between the upper hook and the lower hook of the electric hoist is less than or equal to 700 mm ("attached lifting scaffold lift synchronous control system application technical specification", China engineering construction association standard CECS 373: 2014). Therefore, in the total lifting operation height of the electric hoist lifting attached lifting scaffold, the structural height/length of each structural part in the electric hoist hung below the lifting outrigger inevitably occupies the corresponding lifting distance height below the lifting outrigger, so that the actual effective lifting space height/distance is not in place, and the normal construction operation requirement cannot be met. To avoid this, the height of the lifting operation space reserved for the specification of the electric hoist in the current attached lifting scaffold should generally be at least 2 lifting height units (i.e. the standard storey height of the building storey), as shown in fig. 1. In the way of increasing the structural height of the attached lifting scaffold to solve the structural height/length of the lifting power equipment such as the electric hoist, the added construction material cost of the redundant part in the structural layer and the increase of the operation energy consumption caused by the construction material cost are obviously great waste for the attached lifting scaffold which only has the height of 4-5 standard layers. Especially for the whole construction industry with huge construction scale, the method is a huge waste without meaning.

Disclosure of Invention

In view of this, the invention provides a method for setting a lifting power device in an attached lifting scaffold, which can be implemented by only reserving a distance equivalent to a lifting height unit for the lifting power device in the construction height of the existing attached lifting scaffold, and has great economic value capable of greatly reducing construction materials and energy consumption, and also can remarkably improve the safety of the attached lifting scaffold.

The invention relates to a method for setting lifting power equipment in an attached lifting scaffold, which is an improvement on the setting mode of the lifting power equipment in the existing attached lifting scaffold. Under the premise that the hoisting power equipment is also arranged on a hoisting support structure which is firmly connected with a building, the hoisting power equipment is arranged at a position higher than a lower bottom plane of the hoisting support structure, and the vertical height between the bottom plane of the hoisting power equipment and the lower bottom plane of the hoisting support structure where the hoisting power equipment is arranged is adapted to the sum of the minimum structural vertical heights of the hoisting power equipment in the hoisting operation, including a driving mechanism, a lifting transmission structure connected with the driving mechanism and lifting structural members including all connecting structures. The hoisting support structure firmly connected with the building comprises hoisting cantilever beams with various forms, materials and lengths which are commonly used at present and other corresponding alternative structures with the same function/function.

The above-described positioning of the lifting power device in the lifting support structure above the underlying base plane may be performed in different ways. For example, depending on the vertical height/thickness of the structure of the lifting support structure itself, the lifting power equipment may be located "mid-way" between the upper bearing surface and the base plane in the lifting support structure, as structural and material strength permits, but it is simpler and more convenient to locate the lifting power equipment support on the power equipment support structure above the lifting support structure.

The lifting power equipment comprises a lifting transmission structure and each connecting structure, wherein the lifting transmission structure and each connecting structure comprise a lifting transmission chain connected with a driving mechanism thereof and a connecting structure used for connecting a lifting support structure and/or the attached lifting scaffold.

Therefore, the invention improves the method for setting the hoisting power equipment in the attached lifting scaffold, the invention prevents the lifting power equipment from occupying or influencing the effective lifting space height by the minimum structural vertical height of each lifting structural member in the hoisting power equipment when the lifting power equipment lifts the attached lifting scaffold by the lifting height unit, can ensure the actual effective lifting height to be in place, not only ensures the enough space height required by construction, but also thoroughly eliminates the suspended part with potential safety hazard below the attached lifting scaffold due to the fact that the actual effective lifting height is not in place, and can reserve 1 lifting height unit for the hoisting power equipment in the attached lifting scaffold, the total construction height of the attached lifting scaffold is reduced by one structural layer compared with the conventional mode that 2 lifting height units are required to be reserved, so that the huge economic value of construction materials and energy consumption can be greatly reduced, and the safety of the attached lifting scaffold is also obviously improved.

The present invention will be described in further detail with reference to the following detailed description of exemplary embodiments thereof as illustrated in the accompanying drawings. This should not be understood as limiting the scope of the above-described subject matter of the present invention to the following examples. Various substitutions and alterations according to the general knowledge and conventional practice in the art are intended to be included within the scope of the present invention without departing from the technical spirit of the present invention as described above.

Drawings

Fig. 1 is a schematic diagram of a method for setting an electric hoist of a hoisting power device in a current attached lifting scaffold.

Fig. 2 is a schematic diagram of a problem with the setup method of fig. 1.

Fig. 3 is a schematic view of a method of installing a lifting power device in the attached lifting scaffold of the present invention.

Detailed Description

Fig. 1 shows an attached lifting scaffold currently used for building high-rise buildings, in which a low-speed endless chain electric hoist, i.e., an electric hoist, is used as a lifting power device. The total construction height of the attached lifting scaffold 1 is 4 building floor heights corresponding to the heights of a floor 11, a floor 12, a floor 13 and a floor 14 which are built and sequentially raised, namely the heights of 4 lifting height units, the bottom layer 7 of the scaffold body corresponds to the building floor 10, and the floor 14 is the last built floor. The hoisting support structure 2 such as a conventional hoisting outrigger is stably installed at a floor position corresponding to the floor 12 of the building. A lifting drive mechanism 4 in an electric hoist as a lifting power equipment is arranged under the lifting support structure 2 in a hanging manner through an upper connecting structure 3 such as a hook and a hanging ring. The lifting driving mechanism 4 is connected with the bottom layer 7 of the frame body of the attached lifting scaffold through a lifting transmission structure in the form of a transmission chain 5 and the like and a lower connecting structure 6 in the form of a lower hook, a hanging ring and the like. In the 4 floor story heights of the attached lifting scaffold 1 structure, the height equivalent to 2 floor story heights of the floors 10-12 is the height of the lifting operation space reserved for the electric hoist to lift the attached lifting scaffold 1. Fig. 1(a) shows a state before the attached lifting scaffold 1 is lifted. The state of the attached lifting scaffold 1 after being lifted by an electric hoist to a lifting height unit, namely, the height of a floor level, is shown in fig. 1(B), at this time, the bottom layer 7 of the attached lifting scaffold 1 is lifted to a position corresponding to the height of a floor 11, the highest layer of the attached lifting scaffold is also lifted to a position corresponding to a floor 15 to be constructed, and the heights of all the other structural levels of the attached lifting scaffold 1 are also corresponding to the corresponding floor positions of a building, so that the normal construction operation of each floor can be met.

Fig. 2 is different from fig. 1 in that the total building height of the attached lifting scaffold in fig. 1 is directly reduced from 4 building floor heights to 3 floor heights, wherein the height of the reserved lifting operation space for the electric hoist is also reduced to a range of only 1 floor height from floors 10-12, and the state before lifting is shown in fig. 2 (a). The attached lifting scaffold 1 is lifted by a lifting height unit of 1 floor height, as shown in fig. 2 (B). At this time, although the heights of the rest structural layers except the structural layer where the electric hoist is located in the attached lifting scaffold 1 can be lifted to the corresponding position of the corresponding building floor, the lifting height of the structural layer, which is the height of the lifting space reserved for the electric hoist in the attached lifting scaffold 1, is equal to the height h1 occupied by the sum of the structural minimum vertical heights of the structural members in the electric hoist hung below the hoisting support structure 2, so that the frame bottom layer 7 of the attached lifting scaffold 1 cannot be lifted to the right position and is suspended below the corresponding floor 12, not only the height of the frame bottom layer 7 of the attached lifting scaffold 1 cannot meet the requirement of normal construction operation, but also the suspended part, which is suspended below the floor 12 and has the height h2, is a dangerous space due to lack of shielding.

FIG. 3 is a method for installing a lifting power equipment in an attached lifting scaffold, in which a lifting driving mechanism 4 in a widely used lifting power equipment such as a low-speed loop chain hoist is supported and installed in a power equipment supporting structure 8 portion stably connected above a lifting supporting structure 2 such as a lifting outrigger, on the premise that the lifting power equipment such as a general electric hoist is still installed in the lifting supporting structure 2 stably connected to the lifting outrigger or the like in a building, and the vertical height between the bottom plane of the hoisting power equipment and the bottom plane below the hoisting support structure 2, the lifting transmission structure is adapted to the sum of the minimum structural vertical heights of the lifting structural members in lifting operation, such as a driving mechanism 4 in lifting power equipment, a lifting transmission structure 5 such as a lifting chain connected with the driving mechanism, and a connecting structure 6 of the attached lifting scaffold 1. The frame bottom layer 7 of the attached lifting scaffold 1 corresponds to the building floor 10, the

floors

12 and 13 are constructed floors, and the floor 14 is a floor which is just constructed at last. The total height of the attached lifting scaffold 1 only needs 3 lifting height units, namely the floor height, wherein the height of the lifting operation space reserved for the lifting power equipment is only the lifting height unit equivalent to 1 floor height between floors 10-12. Fig. 3(a) shows a state before the attached lifting scaffold 1 is lifted. Fig. 3(B) shows a state where the attached lifting scaffold 1 is lifted. Because the lifting driving mechanism 4 and other structures in the lifting power equipment are arranged in the power equipment supporting structure 8 position above the lifting supporting structure 2 outside the lifting operation space height of the lifting power equipment, the lifting height of the structural layer with the lifting space height reserved for the lifting power equipment such as an electric hoist in the attached lifting scaffold 1 can not be occupied by the structural height of each lifting structural member, so that the actual effective lifting space height of each structural layer can be fully ensured, the frame bottom layer 7 of the attached lifting scaffold 1 can also be lifted to the proper position to correspond to the position of the lifted floor 12, and no dangerous space suspended below the floor 12 exists, thereby meeting the requirement of normal construction operation height of each building floor and reducing the construction height of the existing attached lifting scaffold by one layer, the construction material consumption and the energy consumption of lifting operation are greatly saved, and the safety of preventing falling and overturning is also improved.

Claims

1. A method for arranging hoisting power equipment in an attached lifting scaffold is characterized in that the hoisting power equipment is arranged at a hoisting support structure (2) which is firmly connected with a building, and the method is characterized in that the hoisting power equipment is arranged at a position, higher than a lower bottom plane of the hoisting support structure (2), of the hoisting support structure, and the vertical height between the bottom plane of the hoisting power equipment and the lower bottom plane of the hoisting support structure (2) where the hoisting power equipment is arranged is adapted to the sum of the minimum structural vertical heights of the hoisting power equipment, including a driving mechanism (4), a lifting transmission structure (5) connected with the driving mechanism and lifting structural members including connecting structures in the lifting operation.

2. A method of arranging lifting power equipment in an attached lifting scaffold according to claim 1, characterized by arranging said lifting power equipment support on a power equipment support structure (8) located above said lifting support structure (2).

3. Method for setting up lifting power equipment in an attached lifting scaffold according to claim 1 or 2, characterized in that the lifting power equipment is a low-speed endless chain electric hoist, and the lifting transmission structure (5) and the connecting structures comprise a lifting transmission chain connected with a driving mechanism (4) in the lifting power equipment and a connecting structure (6) used for connecting with the attached lifting scaffold (1).