KR102396527B1 - Lifting Apparatus for Working Platform - Google Patents

Abstract

The present invention selectively utilizes any one of the lifting wire wound on the drum provided on the shaft of the lifting motor or the pinion provided on the shaft of the lifting motor to elevate the subpost of the working scaffold and then lift the working scaffold in a fixed state or It relates to a lifting device for a working platform that allows it to be lowered,
A work scaffold including a plurality of main posts 10 installed in the vertical direction and multi-stage horizontal supports 40 installed in the horizontal direction is elevated along the stage 50 of each floor of the building, and the main post is installed so as to be able to elevate. A pair of sub-posts 20, a stage connecting member 55 coupled and fixed to the stage, a hook member 34 for selectively coupling or separating the sub-post or horizontal support and the stage connecting member, and the sub-post It includes a lifting means 30 for lifting and lowering, and the lifting means is a lifting motor 31 installed to be horizontally movable on the motor support 35 and a rack gear 25 provided in the subpost. It includes a pinion 36 provided on the motor shaft 31 ′, and a lifting wire 33 that is wound on the drum 32 provided on the motor shaft of the lifting motor and fixed to the subpost, and horizontal movement of the lifting motor Accordingly, the pinion is meshed with the rack gear of the sub-post or the lifting wire is connected to the sub-post to elevate the sub-post.

Description

Lifting Apparatus for Working Platform

The present invention relates to a working scaffold lifting device, and more particularly, a subpost of a working scaffold by selectively utilizing any one of a lifting wire wound on a drum provided on the shaft of the lifting motor or a pinion provided on the shaft of the lifting motor. It relates to a working scaffold lifting device that allows the working scaffold to be lifted or lowered in a fixed state after elevating it.

In general, when constructing a building, it is necessary not only to construct the building, but also to prevent damage to the surrounding landscape and prevent various pollutants such as dust generated during construction from affecting the outside except the construction site. Accordingly, when constructing a main building, a frame is formed along the wall, and a kind of blocking film is installed to block the outside by the frame.

These barriers prevent building material debris, blocks, and foreign substances from falling from the upper floors of the building, and not only cause environmental pollution such as dust generation, but also damage people or vehicles passing around the site, or prevent industrial accidents such as fall accidents of workers. It is becoming an essential requirement to prevent it.

However, most of the conventional external temporary barriers have a structure such as installing cloth or other fall prevention nets depending on a frame woven outside, and they are cumbersome to install and dismantle, and are only a workaround with insufficient effectiveness.

Accordingly, recently, a method for improving both safety and convenience by constructing a multi-layered working scaffold and then raising and lowering the working scaffold by a lifting means has been used.

However, in this working scaffold lifting structure, any one of a wire, a cylinder, or a rack gear is used to lift the working scaffold, so if a problem occurs in the lifting means, there is a problem in that it becomes impossible to lift the working scaffold. .

On the other hand, as a result of investigating the prior art related to the present invention, a number of patent documents were searched, and some of them are introduced as follows.

Patent Document 1, in a method of lifting a formwork scaffold using a lifting device, reduces the cost of the formwork scaffold, shortens the air in quickly lifting the formwork scaffold without affecting the natural environment, and provides a lifting device By forming it to move individually from the formwork platform, the overall weight of the formwork platform is reduced, making it easier for workers to work. Also, the high-cost tower crane is continuously used to transport materials, not for lifting the formwork. By doing so, it is possible to efficiently use a high-cost tower crane, and discloses a lifting method of a formwork scaffold equipped with a detachable cylinder and a moving pump.

Patent Document 2, a fixing member positioned between the floors of a concrete structure and fixedly supported between the floors; and a guide member having one end of the fixing member fixed and made of a pair of left and right and protruding from the bottom surface of the concrete structure to the outside; located between the guide member and the same height as the floor surface of the concrete structure It consists of a plate and a scaffold member comprising a height adjusting member coupled to the plate and a controller for controlling the height adjusting member; Disclosed is a scaffold for lifting materials that can be adjusted in height, which can lift materials more safely and conveniently when lifting materials to install a back.

In Patent Document 3, the lower shoe adapter is attached to an anchor bolt cast on a concrete wall by screw coupling, and the shoe adapter is interposed between the upper support frame and the hydraulic hose is interposed between the hydraulic pump and the extended cylinder to insert the lower end of the cylinder. It is fixed with a coupling pin, and at this time, while supporting the formwork platform connected to the rail by an operation in which the catch crossed on the oblique guide channel formed in the shoe adapter is caught and fixed to the locking part of the rail, the upper end of the cylinder is again It is fixed to the coupling pin of the shoe adapter at the top, and the hook of the shoe adapter is caught on the locking part of the rail to lift the rail and the formwork platform that extends thereto. The operator located on the scaffold performs the lifting operation of the formwork scaffold by the operation of the remote control, and when the lifting of the formwork scaffold is completed, the rail connected to the formwork scaffold is fixed to the shoe adapter fixed through the anchor bolt on the upper side of the wall , A rail guide through which a ball screw is gibbed is installed at the upper end of the rail connected to the formwork platform, and the front locking protrusion of the rail guide is locked with the coupling pin of the shoe adapter. The upper part of the rail is precisely adjusted and fixed vertically to the shoe adapter installed in advance on the wall, the cylinder is returned to its original position by lowering, and the cylinder is installed on the formwork platform to be lifted the second time, and the lifting is completed. The operator and the hydraulic pump are positioned with a hydraulic hose on the work platform to perform the lifting operation of the second form work foot, while the same as above is repeated by installing a cylinder on the form work foot to be lifted, and lifting the formwork is completed Disclosed is a lifting method of a formwork scaffold, in which an operator and a hydraulic pump are positioned through a hydraulic hose on the scaffold to perform a lifting operation of the scaffolding.

Patent Document 4, a cage located on the outside of the building to prevent a worker from falling and to provide a work space with a work scaffold, and arranged parallel to the outer surface of the building and coupled to the cage to guide the transport direction of the cage A lifting unit having a guide rail, a cylinder for raising the cage and the guide rail when the length is reduced, and the lifting unit fixed to the outer surface of the building, the lifting unit is installed, and supporting the load of the lifting unit, the guide rail and the cage Disclosed is a cage lifting system for construction work having a slide scaffold unit, which is built into the work scaffold and configured to include a slide scaffold unit that expands and contracts in a sliding manner in the direction of the building to expand the working space.

US 10-0647977 B1 US 10-2008-0107896 A US 10-2011-0083186 A US 10-2101779 B1

The present invention has been devised in order to solve the problems of the prior art, and the lifting means for lifting the working scaffold is configured in double so that when a problem occurs in one lifting means, the other lifting means is used to stably lift the scaffold An object of the present invention is to provide a lifting device for a working platform.

Specifically, to provide a lifting device for a working scaffold that comprises both a drum on which a lifting wire is wound on the shaft of the drive motor and a pinion meshing with the rack gear so that the working scaffold can be lifted using either the lifting wire or the pinion. There is a purpose.

In addition, an object of the present invention is to provide a lifting device for the working scaffold in which the stage connecting member is selectively connected to the sub-post or the horizontal support to selectively elevate the sub-post or the working scaffold.

In addition, an object of the present invention is to provide a lifting device for a working platform in which the hook member is divided into a hook head and a hook body so that the sub-post can be raised and lowered without interference by the hook member.

In addition, an object of the present invention is to provide a lifting device for a working scaffold so that the lifting wire is connected to the hook member through the support roller of the sub-post to prevent abrupt rise or fall of the working scaffold.

Working scaffold lifting device of the present invention for achieving the above object, a plurality of main posts installed in the vertical direction, and a work scaffold comprising a multi-stage horizontal support installed in the horizontal direction along the stages of each floor of the building Elevating the operation In the scaffold lifting device,

A pair of subposts installed so as to be liftable from the side of the main post, a stage connecting member coupled and fixed to each floor stage of a building, and a hook for selectively coupling or separating the subpost or the horizontal support and the stage connecting member A member and a lifting means for elevating the sub-post,

The lifting means includes a lifting motor installed to be horizontally movable on a motor support provided on a horizontal support, a pinion provided on a motor shaft of the lifting motor to mesh with a rack gear provided on one side of the sub-post, and the lifting motor It includes a lifting wire wound on the drum provided on the motor shaft of the motor shaft and the end of which is fixed to the sub-post, and according to the horizontal movement of the lifting motor, the pinion is meshed with the rack gear of the sub-post to elevate the sub-post or The lifting wire is connected to the sub-post, characterized in that for elevating the sub-post.

In addition, according to the lifting device of the working platform of the present invention, the hook member is installed on the stage connecting member and arranged in a pair of a hook head provided with a guide groove in a curved shape, and up and down so as to be fixed to the sub-post or the horizontal support. It is characterized in that it includes a hook body having a plurality of rows of through holes and to which the hook head is rotatably coupled.

In addition, according to the lifting device of the working platform of the present invention, the hook member includes a first hook member for connecting or separating the middle portion of the sub-post and the stage connecting member, and a second connecting or separating the horizontal support and the stage connecting member. It is characterized in that it is divided by a hook member.

In addition, according to the lifting device for the working platform of the present invention, it is characterized in that a hook groove to which the end of the lifting wire is connected is formed on the upper end of the hook head of the first hook member.

In addition, according to the working platform lifting device of the present invention, the lifting wire is characterized in that it is fixed to the hook member through a support roller provided at the lower end of the sub-post.

In the lifting device of the present invention, the lifting means of the rack and pinion structure and the lifting means of the drum and wire structure are integrally configured, so that the lifting means of the rack and pinion structure or the lifting means of the drum and wire structure selectively according to the horizontal movement of the lifting motor Since the lifting means can be operated, there is an effect that the working platform can be stably raised and lowered even if an abnormality occurs in any one of the lifting means.

In addition, according to the lifting device for the work platform according to the present invention, the subpost or the horizontal support is selectively connected to the stage connecting member by using a hook head having a curved guide groove and a hook body having a plurality of rows of through holes. The footrest can be raised and lowered, and the connection position of the stage and the sub-post or the horizontal support can be adjusted through the guide groove of the hook head and a plurality of through-holes provided in the hook body.

In addition, according to the working scaffold lifting device according to the present invention, the first hook member for connecting the sub-post and the stage connecting member or the second hook member for connecting the horizontal support and the stage connecting member is selectively connected to the stage connecting member to form the working scaffold. It has the effect of being able to ascend and descend.

In addition, according to the lifting device for the working platform according to the present invention, as a hook groove is formed on the upper end of the hook body of the first hook member, there is an effect that the end of the lifting wire can be easily connected to the first hook member.

In addition, according to the working scaffold lifting device according to the present invention, a pulley effect occurs as the lifting wire is fixed to the hook member through the support roller provided at the bottom of the sub-post, thereby working even when a lifting motor of a smaller output is used As well as being able to raise and lower the scaffold, there is an effect that the working scaffold is stably raised and lowered.

1 is an elevation view and a side cross-sectional view of a working scaffold lifting device according to the present invention.
Figure 2 is an enlarged view showing the lifting means of the working platform lifting device according to the present invention.
Figure 3 is an enlarged side view showing the lifting means of the working platform lifting device according to the present invention.
Figure 4 is a reference view showing a lifting structure using a pinion in the working platform lifting device according to the present invention.
Figure 5 is a reference view showing a lifting structure using a lifting wire in the working scaffold lifting device according to the present invention.
Figure 6 is a block diagram showing the hook member of the working platform lifting device according to the present invention.
Figure 7 is a process chart showing the process of lifting the working scaffold using a lifting wire in the working scaffold lifting device according to the present invention.
Figure 8 is a process diagram showing the process of lifting the working scaffold using a pinion and a rack gear in the working scaffold lifting device according to the present invention.

Hereinafter, with reference to the accompanying drawings, the working scaffold lifting device of the present invention will be described as follows.

The terms used in the present invention are terms defined in consideration of the functions in the present invention, which may vary depending on the intention or custom of the user or operator, so the definitions of these terms correspond to the technical matters of the present invention and should be interpreted as a concept.

In addition, the embodiments of the present invention do not limit the scope of the present invention, but are merely exemplary matters of the components presented in the claims of the present invention, and are included in the technical spirit throughout the specification of the present invention and the scope of the claims. It is an embodiment including a substitutable component as an equivalent in the component.

In addition, optional terms in the examples below are used to distinguish one component from other components, and the components are not limited by the terms.

Accordingly, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention will be omitted.

For explaining a preferred embodiment of the present invention, Figure 1 is an elevation view and a side cross-sectional view of the working scaffold lifting device according to the present invention, Figure 2 is an enlarged view showing the lifting means of the working scaffold lifting device according to the present invention, Fig. 3 is an enlarged side view showing the lifting means of the working platform lifting device according to the present invention. And, Figure 4 is a reference view showing a lifting structure using a pinion in the working scaffold lifting device according to the present invention, Figure 5 is a reference view showing the lifting structure using a lifting wire in the working scaffold lifting device according to the present invention, Fig. 6 is a block diagram showing the hook member of the lifting device for the working platform according to the present invention. In addition, Figure 7 is a process chart showing the process of lifting the work scaffold using a lifting wire in the working scaffold lifting device according to the present invention, Figure 8 is a work using a pinion and a rack gear in the working scaffold lifting device according to the present invention It is a process chart showing the process of lifting the scaffold.

The lifting device of the present invention for achieving the above object is, as shown in FIGS. 1 to 6 , a plurality of main posts 10 installed in a vertical direction and a multi-stage horizontal support 40 installed in a horizontal direction. A pair of sub-posts 20 installed so as to be able to ascend and descend on the side of the main post 10 by elevating a working scaffold comprising a step along each floor stage of the building, and fixed to the stage 50 of each floor of the building. a stage connecting member 55 to be used, a hook member 34 for selectively coupling or separating the sub-post 20 or horizontal support 40 and the stage connecting member 55, and the sub-post 20 It includes a lifting means 30 for elevating.

Here, as shown in FIGS. 2 and 5 , the lifting means 30 includes a lifting motor 31 installed to be horizontally movable on a motor support 35 provided in the horizontal support 40 , and the sub-post. A pinion 36 provided on the motor shaft 31' of the lifting motor 31 so as to mesh with the rack gear 25 provided on one side of the 20, and the motor shaft 31' of the lifting motor 31 ) includes a lifting wire 33 that is wound on the drum 32 provided in and the end is fixed to the sub-post 20 . That is, as for the lifting means 30, either the pinion 36 or the lifting wire 33 is selected according to the horizontal movement of the lifting motor 31 installed on the motor support 35, and the sub-post 20 is to be raised.

Specifically, as shown in FIG. 3 , when the lifting motor 31 is advanced, the pinion 36 meshes with the rack gear 25 of the sub-post 20. When the lifting motor 31 is driven, the rack As the pinion 36 meshed with the gear 25 rotates, the sub-post 20 is raised and lowered. However, as shown in FIG. 4 , when the lifting motor 31 is retracted, the pinion 36 is separated from the rack gear 25 of the subpost 20 , and the subpost 20 does not move up and down. Therefore, by fixing the lifting wire 33 wound on the drum 32 of the lifting motor 31 to the hook member 34 connected to the subpost 20, the lifting wire according to the driving of the lifting motor 31 (33) is wound on the drum (32) or is released so that the sub-post (20) is raised and lowered.

At this time, the lifting wire 33 is preferably fixed to the hook member 34 through the support roller 23 provided at the lower end of the sub-post (20). And, as shown in FIG. 6, the hook member 34 is installed on the stage connecting member 55, and a hook head 342 provided with a guide groove 342' in a curved shape. and a plurality of rows of through-holes 341' arranged in pairs so as to be fixed to the sub-post 20 or the horizontal support 40, and the hook head 342 is guided through the guide groove 342'. It includes a hook body 341 that is rotatably coupled. In addition, the hook member 34 includes a first hook member 34a for connecting or separating the middle portion of the sub-post 20 and the stage connecting member 55 , and the horizontal support 40 and the stage connecting member 55 . ) may be divided into a second hook member (34b) for connecting or separating. In addition, it is preferable that a hook groove 341 ″ to which an end of the lifting wire 33 is connected is formed on the upper end of the hook body 341 of the first hook member 34a.

Accordingly, the stage 50 and the sub-post 20 or the horizontal support 40 through the guide groove 342' of the hook head 342 and the plurality of rows of through-holes 341' provided in the hook body 341. ) can be adjusted. Then, the first hook member 34a connecting the sub-post 20 and the stage connecting member 55 or the second hook member 34b connecting the horizontal support 40 and the stage connecting member 55 are selectively selected. By connecting to the stage connecting member 55, it is possible to elevate the working scaffold, and as a hook groove 341 ″ is formed on the upper end of the hook body 341 of the first hook member 34a, the lifting wire 33 can be easily connected to the end of the first hook member (34a).

In addition, since the lifting wire 33 is fixed to the hook member 34 via the support roller 23 provided at the bottom of the subpost 20, a pulley effect occurs. That is, the length of the lifting wire 33 wound around the drum 32 is double the height at which the sub-post 20 is raised and lowered, so that the working scaffold can be raised and lowered with less force. Accordingly, it is possible to use the lifting motor 31 of a smaller output, and the lifting speed of the working scaffold is reduced, so that the working scaffold is stably raised and lowered.

The working scaffold lifting device of the present invention configured as described above selectively elevates the working scaffold or sub-post composed of the main post and the horizontal support so that it can be fixed to the stages of each floor of the building, and the lifting means for elevating the working scaffold is a drum And it is formed in a double lifting structure of a wire structure and a rack and pinion structure, so that even if an abnormality occurs in any one of the lifting structures, the work platform can be raised and lowered by using the other lifting structures.

For reference, the lifting of the work platform with reference to FIGS. 7 and 8 will be described as follows.

In the case of lifting the working platform, first, the stage connecting member 55 in which the first hook member 34a is installed is separated from the stage 50, and the stage connecting member 55 in which the second hook member 34b is installed is the stage. Keep it connected to (50). In this state, the auxiliary post 20 is moved upward by using the lifting means.

At this time, in the case of using the lifting part of the drum and wire structure, as shown in FIG. 7 , the lifting motor 31 is retracted to separate the pinion 36 from the rack gear 25, and then the lifting wire 33 is attached to the auxiliary post ( 20) is fixed to the first hook member (34a) connected. In this state, when the lifting motor 31 is operated to wind the lifting wire 33 on the drum 32, the auxiliary post 20 moves upward.

When the lifting of the auxiliary post 20 is completed, the stage connecting member 55 of the first hook member 34a is reconnected to the stage 50, and on the contrary, the stage connecting member of the second hook member 34b is connected again. At (55) after separation from the stage 50, the lifting motor 31 is operated in the opposite direction so that the lifting wire 33 wound around the drum 32 is released.

In this way, when the lifting wire 33 is released from the drum 32, the auxiliary post 20 must descend, but the auxiliary post 20 is connected to the first hook member 34a and the stage connecting member 55. Since it is fixed to the stage 50 by the method, the horizontal support 40 provided with the second hook member 34b moves upward instead of the auxiliary post 20 descending, and the working platform is lifted.

When the elevation of the horizontal support 40 is completed, the stage connecting member 55 on which the second hook member 34b is installed is reconnected to the stage 50 so that the working platform is stably fixed, and then the operation is performed. Do it.

Thereafter, when it is desired to lower the working scaffold after all the work is completed, the stage connecting member 55 of the first hook member 34a is separated from the stage 50 and the stage of the second hook member 34b is removed. The connecting member 55 moves the auxiliary post 20 down by releasing the lifting wire 33 from the drum 32 in a state connected to the stage 50, and the stage connecting member of the first hook member 34a. (55) is connected to the stage (50) and the stage connecting member (55) of the second hook member (34b) is separated from the stage (50), and the lifting wire (33) is wound around the drum (32). The step of lowering the scaffolding may be repeated in sequence.

And, when the lifting wire 33 cannot be used, the lifting wire 33 fixed to the auxiliary post 20 is removed, and the lifting part of the rack and pinion structure of the end of the motor shaft 31' is used. That is, as shown in FIG. 8 , the lifting motor 31 is advanced to mesh the pinion 36 with the rack gear 25 of the auxiliary post 20 . Elevating the work scaffold by using the lifting part of the rack and pinion structure is substantially the same as the operation method except the structure of the lifting part is different, and thus a detailed description thereof will be omitted.

Although the above has been described and illustrated in relation to several embodiments for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as described above, and the scope of the technical idea described in the description of the invention It will be apparent to those skilled in the art that numerous changes and modifications can be made to the present invention without departing from the scope of the present invention. Accordingly, all such suitable alterations and modifications and equivalents are to be considered as being within the scope of the present invention.

10...Main Post
20...Subpost
25...Rack Gear
30...lifting means
31...lifting motor
31'...Motor shaft
32...drums
33...lifting wire
34...Hook member
34a... first hook member
34b...Second hook member
341...Hookbody
341'...through hole
341"...hanging groove
342...hookhead
342'...Guide Home
35...Motor support
36...pinion
40...horizontal support
50...stage
55...stage connecting member

Claims (5)

In the working scaffold lifting device for lifting and lowering a working scaffold comprising a plurality of main posts 10 installed in the vertical direction and a multi-stage horizontal support 40 installed in the horizontal direction along the stages 50 of each floor of a building,
A pair of sub-posts 20 installed so as to be liftable on the side of the main post 10, a stage connecting member 55 coupled and fixed to the stage 50 of each floor of the building, and the sub-post 20 or It includes a hook member 34 for selectively coupling or separating the horizontal support 40 and the stage connecting member 55, and a lifting means 30 for elevating the sub-post 20,
The lifting means 30 includes a lifting motor 31 movably installed on a motor support 35 provided on the horizontal support 40 , and a rack gear 25 provided on one side of the sub-post 20 . The pinion 36 provided on the motor shaft 31' of the lifting motor 31 so as to mesh with the drum 32 provided on the motor shaft 31' of the lifting motor 31 is wound and the end The additional includes a lifting wire (33) fixed to the sub-post (20),
According to the horizontal movement of the lifting motor 31, the pinion 36 meshes with the rack gear 25 of the sub-post 20 to elevate the sub-post 20, or the lifting wire 33 moves the sub-post ( In addition to being connected to 30) to elevate the sub-post 30,
The hook member 34 is installed on the stage connecting member 55 and fixed to the hook head 342 provided with a guide groove 342 ′ in a curved shape, and the sub-post 20 or the horizontal support 40 . A working platform lifting device comprising a hook body (341) having a plurality of rows of through-holes (341') arranged in pairs up and down, and a hook body (341) to which the hook head (342) is rotatably coupled. delete The method of claim 1,
The hook member 34 includes a first hook member 34a for connecting or separating the middle portion of the subpost 20 and the stage connecting member 55, and the horizontal support 40 and the stage connecting member 55. Working platform lifting device, characterized in that it is divided by a second hook member (34b) for connecting or separating. 4. The method of claim 3,
A working scaffold lifting device, characterized in that a hook groove (341″) to which the end of the lifting wire (33) is connected is formed on the upper end of the hook body (341) of the first hook member (34a).
According to any one of claims 1, 3, 4,
The lifting wire (33) is a working scaffold lifting device, characterized in that fixed to the hook member (34) via a support roller (23) provided at the lower end of the sub-post (20).

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