阅读说明：本技术 一种竖向井道无轨自升降自锁式双层笼架施工方法 (Vertical hoistway trackless self-lifting self-locking double-layer cage construction method ) 是由 成军 于 2020-05-15 设计创作，主要内容包括：本发明公开了一种竖向井道无轨自升降自锁式双层笼架施工方法,包括如下步骤：墙面预留安全轴固定洞口→下层笼架的制作→上部套架的制作→安全自锁轴安装→爬梯的安装→升降设备的安装。本发明以工程实践为基础,分析了电梯井传统的钢管扣件式脚手架、三角形吊装升脚手架的利弊,提出了无轨自升降自锁式双层笼架的施工技术,使竖向井道脚手架工具化、进度快、材料省、安全性能提高。(The invention discloses a vertical hoistway trackless self-lifting self-locking double-layer cage construction method, which comprises the following steps: the method comprises the steps of reserving a safety shaft fixing hole on a wall surface → manufacturing a lower layer cage frame → manufacturing an upper portion sleeve frame → installing a safety self-locking shaft → installing a ladder stand → installing lifting equipment. Based on engineering practice, the invention analyzes the advantages and disadvantages of the traditional steel pipe fastener type scaffold and the triangular hoisting scaffold of the elevator shaft, provides a construction technology of the trackless self-lifting self-locking double-layer cage frame, and ensures that the vertical shaft scaffold is toolized, the progress is fast, the materials are saved and the safety performance is improved.)

1. A vertical shaft trackless self-lifting self-locking double-layer cage construction method is characterized in that: the method comprises the following steps: the method comprises the following steps of reserving a safety shaft fixing hole on a wall surface → manufacturing a lower layer cage → manufacturing an upper portion sleeve frame → installing a safety self-locking shaft → installing a ladder stand → installing lifting equipment, wherein:

the lower-layer cage frame is manufactured as follows: 4 steel pipes with phi 60 are used as vertical rods, and then 4 steel pipes with phi 48 are respectively used for welding 2 horizontal operating platforms, the plane size of each platform is 100mm smaller than that of each side of a vertical shaft, the steel pipes of the platforms are welded with the vertical rods, the hollowness of the vertical rods is guaranteed not to be damaged, the height of the vertical rods is the standard floor height of a building to be built, and therefore a lower-layer cage frame is manufactured, the height of the cage is equal to the floor height, and the plane size of the sides of the cage is 100mm smaller than that of each side of the vertical shaft;

the manufacturing of the upper sleeve frame comprises the following steps: manufacturing a platform with the size consistent with the bottom surface and the top surface of the cage frame by using a phi 48 steel pipe, welding downwards a phi 48 steel pipe from four corners respectively, wherein the length of the steel pipe is +1m higher than that of the layer, inserting the phi 48 steel pipes into the phi 60 steel pipes at the four corners of the lower cage frame, and thus completing the installation of the upper layer sleeve frame and the lower layer cage frame;

the safe self-locking shaft is installed: the self-locking safety device comprises a sleeve, a self-locking shaft, a spring, a pull ring, a pull wire and a fixing hook, wherein the sleeve is welded on the lower sides of a sleeve frame and a cage frame top plate and the inner sides of vertical rods by using a steel pipe with the length of 400mm and the diameter of 30mm, the self-locking shaft is arranged in the sleeve and is propped against the wall surface by using a normally open spring, so that the self-locking shaft is always kept in an outward pushing state; the end of the self-locking shaft close to the wall surface can be provided with a rolling type marble, so that the friction force between the self-locking shaft and the wall surface can be reduced, and the whole cage frame or sleeve frame can be lifted more smoothly; in order to ensure that the self-locking shaft can be pulled back when needed, one end of the self-locking shaft, which is propped against the spring, is provided with a pull ring, and the thin steel wire rope penetrates through the spring and hooks the fixed block at the end part of the spring through a pull hook at the end part so as to ensure that the self-locking shaft is in a pull-back state. The self-locking shaft is required to be arranged on the sleeve frame and the cage frame, each group comprises 2 shafts, and the cage frame and the sleeve frame are respectively provided with 2 groups;

the ladder stand is installed as follows: a ladder stand convenient for personnel to go up and down is arranged between the upper layer and the lower layer in the cage, the ladder stand is 250mm wide and as high as the cage, and is welded by a round pipe with the diameter of phi 25, and the height difference of each step is 300 mm;

the installation of the lifting device is as follows: an iron plate with the thickness of 20mm is welded in the middle of the top surface of the upper layer sleeve frame, a screw rod lifter is fixed on the iron plate through bolts, a flange is reserved at the bottom of a screw rod and fixed on the top surface of the lower layer cage frame, so that the sleeve frame and the cage frame are connected through the screw rod of the screw rod lifter, and the whole frame body is lifted or lowered through the movement of the screw rod.

2. The vertical hoistway trackless self-lifting self-locking double-layer cage construction method according to claim 1, characterized in that: the wall surface is reserved with a safety shaft fixing hole: the method comprises the steps of firstly analyzing the plane size of a vertical shaft, determining the size of a long side and the size of a short side, reserving a hole with the diameter of 50mm and the depth of 150mm at the wall surface with the size of the short side, the position (100+48+30/2) mm away from a corner and the position-0.2 m greater than the elevation-plate thickness of a floor structure. The cave mouth is respectively reserved at two ends of the short side wall surface of the shaft, 4 cave mouths are in a group, and each layer is reserved with the same size.

Technical Field

The invention belongs to a construction method of a trackless self-lifting self-locking double-layer cage frame of a vertical shaft.

Background

At present, in a high-rise building, a frame shear wall structure and a frame core tube structure occupy higher specific gravity. One common characteristic of these buildings is that the vertical hoistway uses a reinforced concrete shear wall structure to resist the horizontal shear of the structure while meeting the requirements of the equipment for the installation of the elevator in the building. In this type of vertical well structure work progress, from basement to roof, the centre does not have the interlayer, all need use the scaffold when the inside template of vertical well is established, is demolishd.

Traditional scaffold frame adopts steel pipe fastener to take the top layer from the basement always, and the required material of scaffold frame is set up to inside more, and has the wall body to seal because of its periphery, and the quality of scaffold frame is not convenient for inspect, and is difficult to guarantee safely. Another common type is a triangular scaffold, which is lifted by a tower crane during the construction of a main structure, and is used synchronously with the main structure, and the triangular scaffold is removed after the main structure is completed, and a steel pipe fastener type scaffold needs to be erected again in the decoration and installation stages. Therefore, the elevator shaft scaffold is a key point for safe work in the civil engineering process.

Disclosure of Invention

The purpose of the invention is as follows: in order to solve the problem of the scaffold of the vertical shaft of the high-rise building, the invention provides a construction method of a trackless self-lifting self-locking double-layer cage frame of the vertical shaft.

The technical scheme is as follows: a construction method of a vertical hoistway trackless self-lifting self-locking double-layer cage comprises the following steps: the method comprises the following steps of reserving a safety shaft fixing hole on a wall surface → manufacturing a lower layer cage → manufacturing an upper portion sleeve frame → installing a safety self-locking shaft → installing a ladder stand → installing lifting equipment, wherein:

the lower-layer cage frame is manufactured as follows: 4 steel pipes with phi 60 are used as vertical rods, and then 4 steel pipes with phi 48 are respectively used for welding 2 horizontal operating platforms, the plane size of each platform is 100mm smaller than that of each side of a vertical shaft, the steel pipes of the platforms are welded with the vertical rods, the hollowness of the vertical rods is guaranteed not to be damaged, the height of the vertical rods is the standard floor height of a building to be built, and therefore a lower-layer cage frame is manufactured, the height of the cage is equal to the floor height, and the plane size of the sides of the cage is 100mm smaller than that of each side of the vertical shaft;

the manufacturing of the upper sleeve frame comprises the following steps: manufacturing a platform with the size consistent with the bottom surface and the top surface of the cage frame by using a phi 48 steel pipe, welding downwards a phi 48 steel pipe from four corners respectively, wherein the length of the steel pipe is +1m higher than that of the layer, inserting the phi 48 steel pipes into the phi 60 steel pipes at the four corners of the lower cage frame, and thus completing the installation of the upper layer sleeve frame and the lower layer cage frame;

the safe self-locking shaft is installed: the self-locking safety device comprises a sleeve, a self-locking shaft, a spring, a pull ring, a pull wire and a fixing hook, wherein the sleeve is welded on the lower sides of a sleeve frame and a cage frame top plate and the inner sides of vertical rods by using a steel pipe with the length of 400mm and the diameter of 30mm, the self-locking shaft is arranged in the sleeve and is propped against the wall surface by using a normally open spring, so that the self-locking shaft is always kept in an outward pushing state; the end of the self-locking shaft close to the wall surface can be provided with a rolling type marble, so that the friction force between the self-locking shaft and the wall surface can be reduced, and the whole cage frame or sleeve frame can be lifted more smoothly; in order to ensure that the self-locking shaft can be pulled back when needed, one end of the self-locking shaft, which is propped against the spring, is provided with a pull ring, and the thin steel wire rope penetrates through the spring and hooks the fixed block at the end part of the spring through a pull hook at the end part so as to ensure that the self-locking shaft is in a pull-back state. The self-locking shaft is required to be arranged on the sleeve frame and the cage frame, each group comprises 2 shafts, and the cage frame and the sleeve frame are respectively provided with 2 groups;

the ladder stand is installed as follows: a ladder stand convenient for personnel to go up and down is arranged between the upper layer and the lower layer in the cage, the ladder stand is 250mm wide and as high as the cage, and is welded by a round pipe with the diameter of phi 25, and the height difference of each step is 300 mm;

the installation of the lifting device is as follows: an iron plate with the thickness of 20mm is welded in the middle of the top surface of the upper layer sleeve frame, a screw rod lifter is fixed on the iron plate through bolts, a flange is reserved at the bottom of a screw rod and fixed on the top surface of the lower layer cage frame, so that the sleeve frame and the cage frame are connected through the screw rod of the screw rod lifter, and the whole frame body is lifted or lowered through the movement of the screw rod.

Further: the wall surface is reserved with a safety shaft fixing hole: the method comprises the steps of firstly analyzing the plane size of a vertical shaft, determining the size of a long side and the size of a short side, reserving a hole with the diameter of 50mm and the depth of 150mm at the wall surface with the size of the short side, the position (100+48+30/2) mm away from a corner and the position-0.2 m greater than the elevation-plate thickness of a floor structure. The cave mouth is respectively reserved at two ends of the short side wall surface of the shaft, 4 cave mouths are in a group, and each layer is reserved with the same size.

Has the advantages that: the specific advantages of the invention are as follows:

1, simplifying the process: the invention does not need a track, and the operation of the track is replaced by the reserved hole on the wall surface and the pin shaft extending out of the cage.

2, saving the manufacturing cost: the construction of the whole frame body of the shaft can be realized only by welding a cubic cage frame and a sleeve frame which have the same layer height with the structure and are 200mm smaller than the inner diameter of the vertical shaft, and the material consumption of the cubic cage frame is equivalent to 2/total layer number of the erected scaffold.

3, the construction period is quick: through the construction of the double-deck cage of self-lifting, only need 1 minute for scaffold frame once promotes, establish the scaffold frame and need practice thrift several hours than traditional tower.

4, the safety is higher: the cage frame and the sleeve frame are both provided with the safety self-locking devices, the self-locking shaft is always in an outward pushing state, self-locking can be realized as long as safety problems occur, and safe lifting and safe production are ensured.

5, more convenient: this equipment accessible electric lifting and hand two kinds of modes of lifting, even under the condition that does not have the power, also only need 5 minutes through manual promotion.

6, high efficiency: due to the adoption of the double-layer cage frame, the top operation surface can be used for structural construction, and the lower-layer cage frame is used for repairing structural defects.

7, application range: the method is suitable for the structural construction, interior decoration and the like of the vertical shaft of the high-rise structure.

Drawings

FIG. 1 is a schematic process flow diagram of the present invention;

FIG. 2 is a schematic plan view of a safety shaft reserved hole of the present invention;

FIG. 3 is a schematic cross-sectional view of a safety shaft reserved hole of the present invention;

FIG. 4 is a schematic plan view of the cage of the present invention;

FIG. 5 is a schematic elevational view of the upper nest and lower cage of the present invention;

FIG. 6 is a schematic view of the installation of the self-locking shaft of the present invention;

figure 7 is a schematic view of the installation of the internal ladder of the present invention;

FIG. 8 is a schematic view of the installation of the lead screw elevator of the present invention;

fig. 9 is a schematic diagram of the ascending process of the apparatus of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.