CN111232799B

CN111232799B - Mobile operation platform traction system and machine room-free elevator construction method using same

Info

Publication number: CN111232799B
Application number: CN202010027244.4A
Authority: CN
Inventors: 陈松馨; 路德明; 黄伟栊; 吴子坚; 萧粤柏
Original assignee: Hitachi Elevator China Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2021-11-26
Anticipated expiration: 2040-01-10
Also published as: CN111232799A

Abstract

The invention discloses a mobile working platform traction system and a machine room-less elevator construction method using the same. The traction system can smoothly implement the scaffold-less construction method, and even in the absence of a main engine in the machine-room-less elevator shaft Move the work platform up and down. There is no need to set up a drive system on the top of the elevator shaft, which can save workload and operating costs, reduce the labor intensity of operators, and improve operation safety.

Description

Mobile operation platform traction system and machine room-free elevator construction method using same

Technical Field

The invention relates to the field of elevator installation engineering, in particular to a traction system of a mobile operation platform and a construction method of a machine room-less elevator by using the traction system.

Background

The elevator is mainly installed in two ways, one is a traditional and widely used scaffold installation method; the other is a scaffold-free installation method that is being used gradually. The project of installing the elevator without the scaffold is listed as one of eleven-five key scientific and technological support projects of the country, related units develop the project, and the project is comprehensively put into practice in the near future, and the country may have some related preferential encouragement policies or restriction regulations to limit the use of the scaffold for installing the elevator. The installation mode of the elevator adopting the scaffold-free construction method is a trend and is the leading direction of elevator installation in the future. Most elevators in japan have been installed using a scaffold-free process. The existing installation mode without a scaffold cannot be comprehensively popularized and used, has various reasons and problems, and relates to how a mobile operation platform moves under the condition without a host; solving the problem plays a key role in the implementation of a scaffold-free construction method.

Disclosure of Invention

In view of the above, the present invention aims to solve the above problems at least to some extent; therefore, on the one hand, the traction system of the mobile operation platform is provided, which can solve the problem of the movement of the operation platform in the elevator without a machine room; on the other hand, a construction method of the elevator without the machine room is provided, and the problem that the construction in the elevator without the machine room is difficult to adopt a scaffold-free construction method can be solved.

One aspect of the invention is realized as follows:

a mobile work platform traction system comprising:

the elevator shaft comprises two rows of guide rails which are oppositely arranged, wherein the guide rails are arranged at the bottom of an elevator shaft;

the supporting member is arranged at the top of the elevator shaft and is positioned above the two rows of guide rails;

a diversion sheave device provided on the support member;

the working platform is provided with a lifting unit, and the lifting unit pulls the working platform by using a suspension member bypassing the diversion sheave device; the operation platform is lifted in the elevator shaft along two rows of guide rails.

As a further alternative of the mobile work platform traction system, the support member is a steel beam of adjustable length; the supporting component comprises two beam seats, two main beams and a connection beam; the main beam and the connection beam are respectively provided with a plurality of connecting holes which are arranged along the axial direction, the connecting holes on the main beam are connected with the connecting holes on the connection beam through connecting pieces, and one main beam is connected with the other main beam through the connection beam; and the beam seat is provided with a slotted hole used for being connected with the connecting hole on the main beam.

In a further alternative of the mobile work platform traction system, the diversion sheave device comprises two diversion sheave sets; the working platform is provided with two mutually independent lifting units, one end of a suspension member is connected with one lifting unit, and the other end of the suspension member is connected with the working platform after bypassing a reverse rope wheel set; the other lifting unit pulls the working platform to have the same structure.

In a further alternative of the traction system of the mobile operation platform, a control box is arranged on the operation platform, and the two lifting units are electrically connected with the control box; the control box is electrically connected with a control panel, and the operation platform is controlled to ascend or descend through the control panel.

As a further alternative to the mobile work platform traction system, a deflector sheave assembly includes two deflector sheaves disposed axially along the support member.

As a further alternative to the mobile work platform traction system, the suspension member comprises one or more cables.

In a further alternative of the mobile operation platform traction system, the operation platform is a car frame.

The mobile operation platform traction system has the beneficial effects that: the traction system is easy to install, can smoothly implement a scaffold-free construction method, and can smoothly move the operation platform up and down under the condition of lack of a main machine in a machine room-free elevator shaft.

Another aspect of the invention is achieved by:

a construction method of a machine room free elevator comprises the following steps:

a. arranging a supporting member at the top in a hoistway of a machine room-less elevator;

b. a diversion sheave device is arranged on the supporting member;

c. installing a first-grade guide rail and assembling a car frame serving as an operation platform at the bottom of a hoistway of a machine room-less elevator;

d. two lifting units are arranged on two sides of the car frame, and the positions of the two lifting units correspond to the diversion sheave device;

e. connecting the hoisting unit and the car frame by means of a suspension member passing around the diverting pulley arrangement;

f. the car frame is used for ascending along the guide rail of the first gear, and the guide rail of the second gear is arranged on the guide rail of the first gear;

g. and repeating the steps until the installation of the guide rail is completed.

As a further alternative of the construction method of the machine room-less elevator, in step a, a top temporary work platform is provided at the elevator entrance at the uppermost layer of the machine room-less elevator shaft, and the support member is fixed in the machine room-less elevator shaft on the top temporary work platform.

The construction method of the machine room free elevator has the following beneficial effects: a driving system is not required to be arranged at the top of the elevator shaft, so that the workload and the operation cost can be saved, the labor intensity of operators is reduced, and the operation safety is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a traction system of a mobile operation platform according to the present invention;

fig. 2 is a schematic view of the mounting of the support member and the diverting pulley arrangement;

FIG. 3 is a schematic structural diagram of the work platform;

FIG. 4 is a schematic structural view of the support member;

FIG. 5 is one of the enlarged partial schematic views of FIG. 4;

FIG. 6 is a second partially enlarged view of FIG. 4;

FIG. 7 is an exploded view of FIG. 4;

fig. 8 is a schematic view of a structure for mounting the support member.

In the figure: 100. a support member; 200. a diverting pulley device; 300. a suspension member; 400. a guide rail; 500. an operation platform; 600. a lifting unit; 700. a control box; 800. a control panel; 900. and the top temporary operation platform.

1. A beam seat; 11. mounting a plate; 111. mounting holes; 12. a connecting plate; 121. a slot; 13. a partition plate; 2. a main beam; 21. a gap; 3. connecting the beams; 4. connecting holes; 5. a connecting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-3, there is shown a mobile work platform 500 traction system comprising: two rows of guide rails 400 arranged oppositely, wherein the guide rails 400 are arranged at the bottom of an elevator shaft; a support member 100 provided at the top of the elevator shaft and located above the two rows of guide rails 400; a diverting pulley device 200, wherein the diverting pulley device 200 is arranged on the supporting member 100; a working platform 500, wherein a lifting unit 600 is arranged on the working platform 500, and the lifting unit 600 pulls the working platform 500 by using a suspension member 300 bypassing the diversion sheave device 200; the work platform 500 is raised and lowered within the hoistway along two rows of guide rails 400. The work platform 500 may be a car frame.

Specifically, the lifting unit 600 is provided on the work platform 500, and is suitable for installation of an elevator without a machine room without using a main machine in the elevator machine room. And the car frame is used as the temporary operation platform 500, the elevator can be directly installed on the basis of the car frame without being detached after use, and compared with a mode of using a scaffold as the operation platform 500, the traction system has a simple structure and can greatly improve the construction efficiency.

In some specific embodiments, due to the different space widths in different elevator hoistways, in order to make the traction system more adaptable, referring to fig. 4-7, the support member 100 is a steel beam with adjustable length; the supporting member 100 comprises two beam seats 1, two main beams 2 and a connection beam 3; a plurality of connecting holes 4 which are arranged along the axial direction are arranged on the main beam 2 and the connection beam 3, the connecting holes 4 on the main beam 2 are connected with the connecting holes 4 on the connection beam 3 through connecting pieces 5, and one main beam 2 is connected with the other main beam 2 through the connection beam 3; the beam seat 1 is provided with a slotted hole 121 which is used for being connected with the connecting hole 4 on the main beam 2. Wherein the connecting member 5 may be a bolt.

In practical applications, the steel beam is arranged on the upper part of the top floor of the elevator and is used as a lifting point of the mobile operation platform 500 for installing the elevator for operation. Specifically, firstly, two beam seats 1 are symmetrically fixed in an elevator shaft, then two main beams 2 are respectively connected with slotted holes 121 on the two beam seats 1 through bolts, at the moment, the main beams 2 and the beam seats 1 only form primary connection, the main beams 2 cannot be separated from the beam seats 1, but the main beams 2 can move along the slotted holes 121; will girder 2 is connected back on the beam seat 1 will refute and connect roof beam 3 and arrange in between two girder 2 to connect two girder 2 respectively, in order to make to refute connecting hole 4 on the roof beam 3 and can correspond connecting hole 4 on two girder 2, can adjust girder 2 is in position on the beam seat 1, then will with the bolt girder 2 with refute and connect roof beam 3 and connect, at last with the bolt tightening on the slotted hole 121, make girder 2 is fixed in completely on the beam seat 1. Wherein the connecting holes 4 are preferably arranged at equal intervals.

In the above scheme, the beam seat 1 includes a mounting plate 11 for fixing the beam seat 1 and a connecting plate 12 for connecting with the main beam 2, the mounting plate 11 is provided with a mounting hole 111, and the slot 121 is arranged on the connecting plate 12. When the beam seat 1 is installed, the mounting plate 11 is fixed on the inner wall of an elevator shaft by utilizing a tension explosion bolt to pass through the mounting hole 111.

In the above solution, referring to fig. 6 and 7, the main beam 2 is composed of two first L-shaped steels, and the connection beam 3 is composed of two second L-shaped steels; the first L-shaped steel and the second L-shaped steel are both composed of two steel plates, and the two steel plates of the first L-shaped steel and the second L-shaped steel are both provided with the connecting holes 4; the two first L-shaped steels are connected through a connecting piece 5 to form the main beam 2, a gap 21 is formed between the two first L-shaped steels forming the main beam 2, and a steel plate on the second L-shaped steel forming the connection beam 3 is inserted into the gap 21. A partition plate 13 extends from the connecting plate 12, the partition plate 13 is inserted into a gap 21 between two first L-shaped steels forming the main beam 2, and the partition plate 13 can be provided with the slot 121; optionally, the thickness of the partition plate 13 is equal to the sum of the thicknesses of the two second L-shaped steel plates. The first L-shaped steel and the second L-shaped steel have the same structure. The two first L-shaped steels forming the main beam 2 can be further kept stable through bolt connection. It should be noted that the names of the first L-shaped steel and the second L-shaped steel are distinguished for convenience of reference, and it is not emphasized that both are parts having different structures, and both may be L-shaped steels having the same structure.

In other words, the supporting member 100 is composed of two beam seats 1 and six L-shaped steel, so that when the supporting member is installed, an operator does not need to spend time to distinguish the main beam 2 from the connection beam 3, and the installation efficiency is improved; reduce the part style and reduce the manufacturing difficulty.

In some embodiments, in order to smooth the lifting process of the work platform 500, referring to fig. 2, the pulley device 200 includes two pulley sets; the work platform 500 is provided with two mutually independent lifting units 600, one end of a suspension member 300 is connected with one lifting unit 600, and the other end of the suspension member 300 bypasses a reverse rope pulley set and then is connected with the work platform 500; the structure of the other lifting unit 600 towing the work platform 500 is the same. Specifically, a diverting pulley set includes two diverting pulleys disposed axially along the support member 100; the suspension member 300 comprises one or more cables. In this way, traction is provided on both sides of the work platform 500, so that the work platform 500 is kept as balanced as possible.

In some specific embodiments, in order to facilitate the construction of the constructor on the work platform, referring to fig. 3, a control box 700 is disposed on the work platform 500, and the two lifting units 600 are electrically connected to the control box 700; the control box 700 is electrically connected to a control board 800, and the operation platform 500 is controlled to ascend or descend by the control board 800. An operator may manipulate the position of the work platform 500 on the work platform. It should be noted that the lifting unit 600 may be a conventional rope winding device, and the work platform 500 is lifted or lowered by winding or unwinding a rope.

When the traction system of the mobile operation platform 500 is used for installing the elevator without a machine room without a scaffold, the operation can be carried out according to the following steps:

a. providing a support member 100 at a top portion in a machine room-less elevator hoistway;

b. a diverting pulley device 200 is provided on the support member 100;

c. installing a guide rail 400 of a first grade and assembling a car frame serving as an operation platform 500 at the pit bottom of a hoistway of a machine room-less elevator;

d. two lifting units 600 are arranged on two sides of the car frame, and the positions of the two lifting units 600 correspond to the diversion sheave device 200;

e. the hoisting unit 600 and the car frame are connected by means of a suspension member 300 passing around the diverting pulley unit 200;

f. the car frame is used for ascending along the guide rail 400 of the first gear, and the guide rail 400 of the second gear is arranged on the guide rail 400 of the first gear;

g. this is repeated until the installation of the guide rail 400 is completed.

In the process, an operator can stand on the car frame to gradually install the elevator components in the shaft.

Here, the top temporary work platform 900 may be provided at an elevator entrance at the uppermost layer of the machine room-less elevator shaft, and the support member 100 may be fixed in the machine room-less elevator shaft on the top temporary work platform 900.

Compared with the traditional mode of installing the elevator without the machine room by utilizing the scaffold, the method does not need to install the scaffold at each elevator opening, and has the characteristics of low cost, convenience in disassembly and assembly, high safety, easiness in implementation and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A mobile work platform traction system, characterized in that, comprising:

Two rows of oppositely arranged guide rails, the guide rails are arranged at the bottom of the pit of the elevator shaft;

Supporting members, located at the top of the elevator shaft;

a reverse rope pulley device, the reverse rope pulley device is arranged on the support member;

a work platform, a lifting unit is arranged on the work platform, and the lift unit uses a suspension member that bypasses the reverse sheave device to pull the work platform; the work platform rises and falls in the elevator shaft along two rows of guide rails;

The anti-rope pulley device includes two anti-rope pulley groups; the working platform is provided with two mutually independent lifting units, one end of a suspension member is connected to a lifting unit, and the other end of the suspension member bypasses a reverse-rope pulley group. Connect the working platform; the structure of another lifting unit pulling the working platform is the same;

The operation platform is provided with a control box, and the two lifting units are electrically connected with the control box; the control box is electrically connected with a control panel, and the operation platform is controlled to rise or fall through the control panel.

2 . The traction system of a mobile work platform according to claim 1 , wherein the supporting member is a steel beam with an adjustable length; the supporting member comprises two beam bases, two main beams and a docking connection. 3 . The main beam and the connecting beam are provided with several connecting holes arranged in the axial direction, and the connecting holes on the main beam and the connecting holes on the connecting beam are connected by connecting pieces. The main beam is connected to the other main beam through the docking beam; the beam base is provided with a slot hole for connecting with the connecting hole on the main beam.

3 . The traction system of a mobile work platform according to claim 1 , wherein a reverse sheave set includes two reverse sheaves axially arranged along the support member. 4 .

4. A mobile work platform traction system according to claim 1, wherein the suspension member comprises one or more cables.

5 . The traction system of a mobile work platform according to claim 1 , wherein the work platform is a car frame. 6 .

6. A machine room-less elevator construction method utilizing a mobile work platform traction system according to claim 1, characterized in that, comprising the following steps:

a. Provide support members on the top of the elevator shaft without machine room;

b. A reverse sheave device is provided on the support member;

c. Install the guide rail of the first gear and assemble the car frame as the working platform at the bottom of the pit of the elevator shaft without machine room;

d. Two hoisting units are arranged on both sides of the car frame, and the positions of the two hoisting units correspond to the reverse sheave device;

e. Connecting the hoisting unit and the car frame with a suspension member bypassing the reverse sheave device;

f. Use the car frame to rise along the guide rail of the first gear, and install the guide rail of the second gear on the guide rail of the first gear;

g. Repeat this until the installation of the guide rail is completed.

7. The construction method of a machine room-less elevator according to claim 6, wherein in step a, a top-level temporary operation platform is set at the elevator entrance of the uppermost floor of the machine-room-less elevator shaft, and all the The support member is fixed in the machine room-less elevator shaft.