JP7564037B2 - Lifting System - Google Patents

Description

The present invention relates to a lifting system.

As one of the techniques proposed for raising and lowering objects such as construction materials, construction equipment, or construction jigs, a technique has been proposed in which the object is raised and lowered by suspending it using a lifting drive source installed at the top of a frame attached to the building structure (see, for example, Patent Document 1).

JP 2014-070481 A

In the technology described in Patent Document 1, the lifting object is raised and lowered by a lifting drive source installed at the top of the frame. For example, if the lifting object shakes while it is being raised or lowered or while it is being pulled toward the building, there is a risk that the lifting object may come into contact with the building structure and be damaged. This means that there is room for improvement in terms of work safety.

The present invention has been made in consideration of the above, and aims to provide a lifting system that can increase the safety of lifting and horizontal movement operations of an object to be lifted and lowered.

In order to solve the above-mentioned problems and achieve the object, the lifting system described in claim 1 is a lifting system for lifting and lowering an object to be lifted and lowered, comprising: a pair of guide rollers arranged in parallel at an interval approximately along the vertical direction of an installation object, the pair of guide rollers being capable of switching between maintaining and releasing the restraint on the object to be lifted and lowered; a hanging means for lifting and lowering the object to be lifted and lowered via the pair of guide rollers; a first horizontal movement means for horizontally moving the object to be lifted and lowered away from the installation object via the pair of guide rollers in a suspended state in which the object to be lifted and lowered is suspended by the hanging means before the object to be lifted and lowered is lifted and lowered; and a second horizontal movement means for horizontally moving the object to be lifted and lowered towards the installation object via the pair of guide rollers in the suspended state after the object to be lifted and lowered is lifted and lowered.

The lifting system of claim 2 is the lifting system of claim 1, in which the first horizontal movement means, in a first restraining state in which the restraint of the lifting target by one of the pair of guide rollers is released and the restraint of the lifting target by the other of the pair of guide rollers is maintained, pushes the other of the pair of guide rollers to the side opposite the installation target, thereby horizontally moving the lifting target away from the installation target via the pair of guide rollers.

The lifting system of claim 3 is the lifting system of claim 1 or 2, in which the second horizontal movement means, in a second restraint state in which the restraint of the lifting target by one of the pair of guide rollers is maintained and the restraint of the lifting target by the other of the pair of guide rollers is released, moves the lifting target horizontally toward the installation target via the pair of guide rollers by pulling one of the pair of guide rollers toward the installation target.

The lifting system described in claim 4 is the lifting system described in any one of claims 1 to 3, and is provided with a guide lifting means for lifting and lowering the pair of guide rollers via a wire.

According to the lifting system described in claim 1, the system includes a pair of guide rollers arranged in parallel at an interval approximately along the vertical direction on the installation target, the pair of guide rollers being capable of switching between maintaining and releasing the restraint on the installation target, a hanging means for lifting and lowering the lifting target via the pair of guide rollers, a first horizontal movement means for horizontally moving the lifting target away from the installation target via the pair of guide rollers in a hanging state before lifting and lowering the lifting target, and a second horizontal movement means for horizontally moving the lifting target closer to the installation target via the pair of guide rollers in a hanging state after lifting and lowering the lifting target. This makes it possible to avoid contact between the lifting target and the installation target or its surrounding components during lifting and horizontal movement of the lifting target, thereby improving the safety of the lifting and horizontal movement of the lifting target.

According to the lifting system described in claim 2, in the first restraint state, the first horizontal movement means pushes out one of the pair of guide rollers in the direction opposite to the installation target, thereby horizontally moving the lifting target away from the installation target via the pair of guide rollers, so that the horizontal movement of the lifting target can be performed easily and safely, and the usability of the first horizontal movement means can be improved.

According to the lifting system described in claim 3, in the second restraint state, the second horizontal movement means pulls one of the pair of guide rollers toward the installation target, thereby horizontally moving the lifting target closer to the installation target via the pair of guide rollers, so that the horizontal movement of the lifting target can be performed easily and safely, and the usability of the second horizontal movement means can be improved.

The lifting system described in claim 4 is provided with a guide lifting means for lifting and lowering a pair of guide rollers via a wire, so that the pair of guide rollers can be lifted and lowered efficiently, improving the workability of lifting and horizontal movement of the lifting target.

1 is a diagram conceptually illustrating a lifting system according to an embodiment of the present invention. 1 is a diagram conceptually showing a method for lifting and lowering an object to be lifted and lowered; 3 is a diagram conceptually illustrating a method for lifting and lowering an object to be lifted, subsequent to FIG. 2 . FIG. 4 is a diagram conceptually illustrating a method for lifting and lowering an object to be lifted, subsequent to FIG. 3; FIG. 5 is a diagram conceptually illustrating a method for lifting and lowering an object to be lifted and lowered, subsequent to FIG. 4 .

Below, an embodiment of the lifting system according to the present invention will be described in detail with reference to the attached drawings. First, [I] the basic concept of the embodiment will be explained, then [II] the specific content of the embodiment will be explained, and finally, [III] modified examples of the embodiment will be explained. However, the present invention is not limited to the embodiment.

[I] Basic Concept of the Embodiment First, a basic concept of the embodiment will be described. The embodiment generally relates to a lifting system that lifts and lowers an object to be lifted.

Here, "lifted object" refers to the object that is lifted and lowered by the lifting system, and is a concept that includes, for example, construction materials, construction equipment, construction tools, etc., but in the embodiment, it is described as a protective frame for protecting the installation object.

The term "installation target" refers to a component of a structure, and is a concept that includes, for example, the structure's framework (e.g., pillars, wall materials, etc.) and accessories attached to the framework (e.g., reinforcing members that reinforce the framework), but in the embodiment, it is described as the pillars of the structure.

The specific structure and type of the "structure" are arbitrary, but the concept includes, for example, architectural structures such as office buildings, public facilities, commercial facilities, and apartment complexes (such as condominiums), as well as civil engineering structures such as bridges, and in the embodiment, it will be described as an office building under construction.

[II] Specific Contents of the Embodiment Next, specific contents of the embodiment will be described.

(composition)
First, a configuration of a lifting system 10 according to an embodiment and a configuration of a structure 1 to which the lifting system 10 is applied will be described.

(Composition - Structure)
First, the configuration of the structure 1 will be described.

Figure 1 is a conceptual diagram of a lifting/lowering system 10 according to an embodiment of the present invention. Here, the X direction in Figure 1 is referred to as the left-right direction or width direction of the lifting/lowering system 10 (-X direction is the left direction of the lifting/lowering system 10, and +X direction is the right direction of the lifting/lowering system 10), the Z direction in Figure 1 is referred to as the up-down direction of the lifting/lowering system 10 (+Z direction is the up direction of the lifting/lowering system 10, and -Z direction is the down direction of the lifting/lowering system 10), and the direction perpendicular to the X direction in Figure 1 and the Z direction in Figure 1 is referred to as the front-back direction (the direction leading to the front side of the paper in Figure 1 is the front direction of the lifting/lowering system 10, which will be described later, and the direction leading to the back side of the paper in Figure 1 is the rear direction of the lifting/lowering system 10).

The structure 1 is, for example, a steel frame (or reinforced concrete) architectural structure (specifically, a multi-storey office building under construction), and as shown in FIG. 1, includes flooring (not shown), columns 2, beams 3, and wall materials (not shown).

Of these, the flooring materials make up the floors of the structure 1, and are arranged in multiple layers in parallel and spaced apart relation to each other in the vertical direction.

The pillars 2 support the flooring, and are provided in multiples between the flooring (i.e., in the space between each floor of the structure 1). Hereinafter, of the multiple pillars 2, the pillar 4 on which a pair of guide rollers 20 (described later) are provided is referred to as the "installation target 4."

In the embodiment, the installation target 4 is provided with a lifting target H that is lifted and lowered using the lifting system 10, and is detachably attached to the installation target 4 with a fastener or the like before and after the lifting target H is lifted and lowered (specifically, the lifting target H is attached to the installation target 4 at multiple points with a fastener or the like). In the following, the task of lifting and lowering the lifting target H is referred to as the "lifting task."

The specific configuration of the lifting target H is arbitrary, but in the embodiment, as shown in FIG. 2 described later, it is a curing frame for curing the installation target 4, and is configured using a curing frame that includes a frame body H1 made by combining multiple steel frame members and a movable scaffolding section H2 attached to the frame body H1.

The beams 3 support the flooring and are provided in multiple positions where they can come into contact with the underside of each flooring, or between floorings on the same floor.

The wall materials are used to separate the floor materials, and multiple wall materials are provided between the floor materials.

(Configuration: Lifting system)
Returning to FIG. 1, the lift system 10 will now be described.

The lifting system 10 is a system for lifting and lowering an object H, and as shown in FIG. 1, includes a pair of guide rollers 20, a hanging unit 30 (see FIG. 3 described below), a first horizontal movement unit 40, a second horizontal movement unit 50, and a guide lifting unit (not shown).

(Configuration - Lifting system - Guide roller)
The pair of guide rollers 20 assist the lifting and lowering of the lifting target H by the hanging part 30. The pair of guide rollers 20 are configured using, for example, known guide rollers (e.g., open-close guide rollers) that can switch between maintaining and releasing the restraint on the lifting target H, and are arranged side by side at a distance from each other in the approximately vertical direction on the installation target 4.

Here, "maintaining the constraint" in the embodiment means restricting the vertical movement of the lifting target H when the pair of guide rollers 20 are attached to the lifting target H. Also, "releasing the constraint" in the embodiment means not restricting the vertical movement of the lifting target H when the pair of guide rollers 20 are attached to the lifting target H.

Specifically, as shown in FIG. 1, one of the pair of guide rollers 20 is connected by a fixture or the like to a portion of the installation target 4 that corresponds to a predetermined level, and the other of the pair of guide rollers 20 is connected by a fixture or the like to a portion of the installation target 4 that corresponds to a level above the predetermined level.

In the following, where necessary, the lower guide roller 21 of the pair of guide rollers 20 will be referred to as the "lower guide roller 21," and the upper guide roller 22 will be referred to as the "upper guide roller 22."

In addition, in the embodiment, the restraining state of the lifting object H by the pair of guide rollers 20 is a concept that includes a "first restraining state," a "second restraining state," a "third restraining state," and a "fourth restraining state."

Among these, the "first restraint state" refers to a state in which the restraint of the lifting object H by one of the pair of guide rollers 20 (in FIG. 1, the upper guide roller 22) is released, and the restraint of the lifting object H by the other of the pair of guide rollers 20 (in FIG. 1, the lower guide roller 21) is maintained.

The "second restraint state" refers to a state in which the restraint of the lifting object H by one of the pair of guide rollers 20 (in FIG. 1, the upper guide roller 22) is maintained, and the restraint of the lifting object H by the other of the pair of guide rollers 20 (in FIG. 1, the lower guide roller 21) is released.

The "third restraining state" refers to a state in which the lifting target H is maintained in restraint by one of the pair of guide rollers 20 (in FIG. 1, the upper guide roller 22) and in which the lifting target H is maintained in restraint by the other of the pair of guide rollers 20 (in FIG. 1, the lower guide roller 21).

The "fourth restraint state" refers to a state in which the restraint on the lifting object H by one of the pair of guide rollers 20 (in FIG. 1, the upper guide roller 22) is released, and the restraint on the lifting object H by the other of the pair of guide rollers 20 (in FIG. 1, the lower guide roller 21) is released.

(Configuration - Lifting system - Suspension part)
The suspending unit 30 is a suspending means for raising and lowering the lifting target H via a pair of guide rollers 20. The suspending unit 30 is configured using, for example, a known suspending device (such as a crane device), and is provided on the structure 1 or in its vicinity.

Specifically, as shown in FIG. 3 described later, the hanging part 30 is provided on a floor of the structure 1 above the floor on which the pair of guide rollers 20 are provided.

The method of connecting the hanging part 30 to the lifting object H is arbitrary, but for example, the hook part 31 of the hanging part 30 is detachably connected to a hanging fitting (not shown) attached to the lifting object H via a first wire 32.

(Configuration-Lifting System-First Horizontal Movement Section)
Returning to Fig. 1, the first horizontal movement unit 40 is a first horizontal movement means that horizontally moves the lifting target H away from the installation target 4 via a pair of guide rollers 20 in a state in which the lifting target H is suspended by the suspension unit 30 (hereinafter referred to as the "suspended state") before lifting or lowering the lifting target H. This first horizontal movement unit 40 is provided on the installation target 4, and specifically, as shown in Fig. 1, is disposed in the vicinity of the lower guide roller 21, and is detachably connected to each of the lower guide roller 21 and the installation target 4 by a fixture or the like.

The specific configuration of the first horizontal movement unit 40 is also arbitrary, but in the embodiment, as shown in FIG. 1, in the first restraint state, the other of the pair of guide rollers 20 (the lower guide roller 21 in FIG. 1) is pushed out to the side opposite the installation target 4 (the left side in FIG. 1), so that the lift target H can be moved horizontally away from the installation target 4 via the pair of guide rollers 20.

Specifically, it is configured using a known horizontal movement device capable of pushing or pulling the lifting target H in the horizontal direction, and as one example, it may be configured using a lever block (registered trademark).

This configuration allows the horizontal movement of the lifting target H to be performed easily and safely (even a single worker can perform the horizontal movement easily and safely), improving the usability of the first horizontal movement unit 40.

(Configuration-Lifting System-Second Horizontal Movement Section)
The second horizontal movement unit 50 is a second horizontal movement means that, after raising and lowering the lifting target H, moves the lifting target H in a suspended state horizontally so as to approach the installation target 4 via the pair of guide rollers 20. This second horizontal movement unit 50 is provided at a position on the installation target 4 different from that of the first horizontal movement unit 40, and specifically, as shown in Fig. 1, is disposed near the upper guide roller 22 and is detachably connected to each of the upper guide roller 22 and the installation target 4 by a fixture or the like.

The specific configuration of the second horizontal movement unit 50 is also arbitrary, but in the embodiment, as shown in FIG. 1, in the second restraint state, one of the pair of guide rollers 20 (the upper guide roller 22 in FIG. 1) is pulled toward the installation target 4 (the right side in FIG. 1), so that the lift target H can be moved horizontally via the pair of guide rollers 20 so as to approach the installation target 4.

Specifically, it is configured using a known horizontal movement device capable of pushing or pulling the lifting target H in the horizontal direction, and as one example, it may be configured using a lever block.

This configuration allows the horizontal movement of the lifting target H to be performed easily and safely (even a single worker can perform the horizontal movement easily and safely), improving the usability of the second horizontal movement unit 50.

(Configuration-Lifting System-Guide Lifting Section)
The guide lifting unit includes a guide lifting means for lifting and lowering the pair of guide rollers 20 via a second wire (not shown). This guide lifting unit is configured using, for example, a known lifting device (one example is a chain block), and is provided on the installation target 4 or a member in the vicinity thereof (for example, a beam 3, a wall material, a floor material, etc.).

Specifically, the guide lifting section is provided on a floor of the structure 1 above the floor on which the pair of guide rollers 20 are provided.

Such a guide lifting section allows the pair of guide rollers 20 to be raised and lowered efficiently, improving the workability of lifting and horizontally moving the lifting object H.

The lifting system 10 described above makes it possible to avoid contact between the lifting target H and the installation target 4 or its surrounding components (e.g., beams 3, flooring, wall materials, etc.) during lifting and horizontal movement of the lifting target H, thereby improving the safety of the lifting and horizontal movement of the lifting target H.

(Method of lifting and lowering the lifting object)
Next, a method for raising and lowering the object H to be raised and lowered will be described.

Figure 2 is a diagram conceptually showing a method for raising and lowering the lifting object H. Figure 3 is a diagram conceptually showing a method for raising and lowering the lifting object H following Figure 2. Figure 4 is a diagram conceptually showing a method for raising and lowering the lifting object H following Figure 3. Figure 5 is a diagram conceptually showing a method for raising and lowering the lifting object H following Figure 4.

The method for lifting and lowering the lifting target H is a method for lifting and lowering the lifting target H using the lifting system 10, and includes a preparation process, an attachment process, a hanging process, a first horizontal movement process, a lifting process, a second horizontal movement process, and a connection process, as shown in Figures 2 to 5.

The premise of this method of lifting and lowering the lifting target H is described as follows: during the preparation process, the lifting target H (specifically, the lower and upper parts of the lifting target H) are detachably connected to the installation target 4 by fasteners, and each step is performed by a worker M.

(Method of lifting and lowering an object to be lifted and lowered - Preparation process)
First, the preparation process will be described.

The preparation process is a process for preparing to raise and lower the lifting target H.

Specifically, as shown in FIG. 2(a), at least one safety net 60 (e.g., a vertical net) for preventing falling objects (not shown, e.g., bolts, nuts, etc.) is installed in the range from the lifting target H on the installation target 4 to a position below the lifting target H (two are installed side by side roughly along the vertical direction in FIG. 2(a)). In addition, it is checked whether the foothold portion H2 of the lifting target H and the lower end of the safety net 60 have been cleaned, and cleaning is performed as necessary.

(Method of lifting and lowering the lifting object - installation process)
Next, the mounting process will be described.

The installation process is a process of attaching a pair of guide rollers 20 to the installation target 4 after the preparation process.

Specifically, as shown in FIG. 2(b), first, the next column 2a is provided at the top end of the installation target 4 by a predetermined method, and then a pair of guide rollers 20 are arranged side by side at a distance from each other in the vertical direction on the installation target 4. Next, the lower guide roller 21 is connected to a portion of the installation target 4 corresponding to a predetermined level by a fastener, and the upper guide roller 22 is connected to a portion of the installation target 4 corresponding to a level above the predetermined level by a fastener, thereby attaching the pair of guide rollers 20 to the installation target 4. In this case, by setting the restraint state of the pair of guide rollers 20 to the third restraint state, it is possible to prevent the lifting target H from wobbling in the horizontal direction during the hanging process.

Next, when raising and lowering the lifting target H, the scaffolding part H2 of the lifting target H is rotated and moved to a position where the scaffolding part H2 does not come into contact with the installation target 4 (for example, a position in front of the installation target 4). In addition, the safety net 60 is opened to set the safety net 60 to a functional state.

(Method of lifting and lowering the lifting object - hanging process)
Next, the hanging process will be described.

The hanging process is a process for putting the lifting target H into a hanging state after the installation process.

Specifically, as shown in FIG. 3(c), first, the hook portion 31 of the suspending portion 30 is connected to the suspending hardware attached to the lifting target H via the first wire 32 (so-called slinging is performed). Next, the fastener connecting the lifting target H and the installation target 4 is removed, and the lifting target H is placed in a suspended state by supporting its own weight with the suspending portion 30. Note that any method can be used to remove the fastener, but from the viewpoint of suppressing the swaying of the lifting target H, it is preferable, for example, to remove the fastener located on the upper part of the lifting target H while the fastener located on the lower part of the lifting target H is attached, and then remove the fastener located on the lower part of the lifting target H.

(Method of lifting and lowering an object to be lifted and lowered - First horizontal movement step)
Next, the first horizontal movement step will be described.

The first horizontal movement process is a process in which the lifting target H is moved horizontally away from the installation target 4 via a pair of guide rollers 20 after the hanging process.

Specifically, as shown in FIG. 3(d), first, the constrained state of the pair of guide rollers 20 is switched from the third constrained state to the first constrained state, and then the lower guide roller 21 is pushed to the left by the first horizontal movement unit 40, thereby horizontally moving the lift target H away from the installation target 4 via the pair of guide rollers 20. Next, after the lift target H has been horizontally moved to a predetermined position, the movement of the pair of guide rollers 20 (left-right movement, front-back movement, and up-down movement in FIG. 3(d)) is restricted using a restricting means (e.g., a positioning bolt) not shown.

(Method of lifting and lowering an object to be lifted and lowered - lifting and lowering process)
Next, the lifting and lowering process will be described.

The lifting process is a process of lifting and lowering the lifting target H after the first horizontal movement process.

Specifically, as shown in FIG. 4(e), first, the constraining state of the pair of guide rollers 20 is switched from the first constraining state to the fourth constraining state (or while the constraining state of the pair of guide rollers 20 is maintained in the first constraining state), and then the lifting target H is raised to a predetermined position by the hanging unit 30. Next, the scaffolding unit H2 of the lifting target H is pivoted to a position before the mounting process (for example, a position to the right of the installation target 4) (note that the pivoting of a portion of the scaffolding unit H2 may be performed during the second horizontal movement process).

(Method of lifting and lowering an object to be lifted and lowered - second horizontal movement process)
Next, the second horizontal movement step will be described.

The second horizontal movement process is a process in which, after the lifting process, the lifting target H is moved horizontally via a pair of guide rollers 20 so as to approach the installation target 4.

Specifically, first, the restricting means is removed from the pair of guide rollers 20. Next, as shown in FIG. 4(f), the constrained state of the pair of guide rollers 20 is switched from the fourth constrained state (or the first constrained state) to the second constrained state, and then the second horizontal movement unit 50 is used to pull the upper guide roller 22 to the right, thereby horizontally moving the lift target H closer to the installation target 4 via the pair of guide rollers 20.

For example, after the lifting target H has been moved horizontally to a predetermined position, the restraint state of the pair of guide rollers 20 may be switched from the second restraint state to the third restraint state to prevent the lifting target H from wobbling in the horizontal direction during the connection process, but the connection process may be performed without switching the restraint state of the pair of guide rollers 20.

(Method of lifting and lowering an object to be lifted and lowered - Connection process)
Next, the connection process will be described.

The connection process is a process of connecting the lifting target H and the installation target 4 after the second horizontal movement process.

Specifically, as shown in FIG. 5(g), the lifting target H is detachably connected to a portion of the installation target 4 that is different from the portion to which the lifting target H was connected before the hanging process was performed (in FIG. 5(g), the portion corresponds approximately to the height position of the lifting target H after the second horizontal movement process), by using a fastener, thereby connecting the lifting target H and the installation target 4. Note that the method of connecting the fastener is arbitrary, but it is preferable, for example, to connect the fastener located on the lower portion of the lifting target H and then connect the fastener located on the upper portion of the lifting target H.

After that, various removal operations (e.g., removing the pair of guide rollers 20 from the installation target 4, disconnecting the hook portion 31 of the hanging portion 30 from the lifting target H, removing the safety net 60, etc.) are performed.

The above-described lifting method makes it possible to avoid contact between the lifting target H and the installation target 4 or its surrounding components (e.g., beams 3, flooring, wall materials, etc.) during the lifting and horizontal movement of the lifting target H, thereby making it possible to increase the safety of the lifting and horizontal movement of the lifting target H.

When the lift target H is to be raised to an even higher position, the series of steps from the preparation step to the connection step may be repeated multiple times. In this case, when the pair of guide rollers 20 used in the first series of steps is to be used again in the second or subsequent series of steps, the pair of guide rollers 20 may be replaced by raising the pair of guide rollers 20 via the second wire using the guide lifting unit.

(Effects of the embodiment)
Thus, according to the embodiment, the device includes a pair of guide rollers 20 arranged side by side at a distance from each other in the vertical direction on the installation target 4, the pair of guide rollers 20 being capable of switching between maintaining and releasing the restraint on the lifted or lowered target H, a hanging unit 30 that raises and lowers the lifted or lowered target H via the pair of guide rollers 20, a first horizontal movement unit 40 that, in a suspended state, moves the lifted or lowered target H horizontally away from the installation target 4 via the pair of guide rollers 20 before lifting or lowering the lifted or lowered target H, and a second horizontal movement unit 50 that, in a suspended state, moves the lifted or lowered target H horizontally toward the installation target 4 via the pair of guide rollers 20 after lifting or lowering the lifted or lowered target H. Therefore, contact between the lifted or lowered target H and the installation target 4 or its surrounding components can be avoided during the lifting or lowering operation and horizontal movement operation of the lifted or lowered target H, thereby making it possible to increase the safety of the lifting or lowering operation and horizontal movement operation of the lifted or lowered target H.

In addition, in the first restraint state, the first horizontal movement unit 40 pushes the other of the pair of guide rollers 20 to the side opposite the installation target 4, thereby horizontally moving the lifting target H away from the installation target 4 via the pair of guide rollers 20, so that the horizontal movement operation of the lifting target H can be performed easily and safely, and the usability of the first horizontal movement unit 40 can be improved.

In addition, in the second restraint state, the second horizontal movement unit 50 pulls one of the pair of guide rollers 20 toward the installation target 4, thereby horizontally moving the lifting target H closer to the installation target 4 via the pair of guide rollers 20. This makes it possible to perform the horizontal movement operation of the lifting target H simply and safely, thereby improving the usability of the second horizontal movement unit 50.

In addition, since the device is equipped with a guide lifting section that raises and lowers the pair of guide rollers 20 via the second wire, the pair of guide rollers 20 can be raised and lowered efficiently, improving the workability of the lifting and horizontal movement operations of the lifting object H.

[III] Modifications to the embodiment The embodiment of the present invention has been described above, but the specific configuration and means of the present invention can be modified and improved as desired within the scope of the technical ideas of each invention described in the claims. Such modifications will be described below.

(About the problem to be solved and the effects of the invention)
First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and the present invention may solve problems that are not described above or achieve effects that are not described above, or may solve only some of the problems that are described or achieve only some of the effects that are described.

(shape, number, structure, time series)
The components illustrated in the embodiments and drawings may be modified and improved as desired within the scope of the technical concept of the present invention with respect to the shape, numerical values, or structure or chronological relationships of multiple components.

(About the lift system)
In the above embodiment, the lifting system 10 is described as including a guide lifting unit. However, the present invention is not limited to this. For example, the guide lifting unit may be omitted.

In addition, in the above embodiment, the lifting system 10 is described as having one pair of guide rollers 20, but this is not limited to the above. For example, when the lifting target H is lifted and lowered by performing a series of steps from the preparation process to the connection process multiple times, if a pair of guide rollers 20 different from the pair of guide rollers 20 used in the first lifting method is used when performing the above series of steps from the second time onwards, multiple pairs of guide rollers 20 may be provided. In this case, the work of replacing the pair of guide rollers 20 can be omitted.

(How to ascend and descend)
In the above embodiment, the preparation step is described as being performed, but the present invention is not limited to this. For example, the preparation step may be omitted.

In the above embodiment, the lifting and lowering method is used to lift the lifting target H, but the present invention is not limited to this. For example, the lifting and lowering method may be used to lower the lifting and lowering target H. In this case, in the lifting and lowering process, the lifting and lowering target H is lowered to a predetermined position by the hanging unit 30. In addition, when a series of processes from the preparation process to the connection process are performed multiple times, the pair of guide rollers 20 may be lowered via the second wire by the guide lifting unit.

In the above embodiment, in the first horizontal movement step, the upper guide roller 22 releases the restraint on the lift target H, and the lower guide roller 21 maintains the restraint on the lift target H. In this first restraint state, the first horizontal movement unit 40 is used to push the lower guide roller 21 to the left, thereby horizontally moving the lift target H away from the installation target 4 via the pair of guide rollers. However, this is not limited to this. For example, in the first restraint state, the lower guide roller 21 releases the restraint on the lift target H, and the upper guide roller 22 maintains the restraint on the lift target H. In this first restraint state, the first horizontal movement unit 40 may be used to push the upper guide roller 22 to the left, thereby horizontally moving the lift target H away from the installation target 4 via the pair of guide rollers 20.

In the above embodiment, in the second horizontal movement step, in the second restraint state in which the upper guide roller 22 maintains the restraint on the lift target H and the lower guide roller 21 releases the restraint on the lift target H, the second horizontal movement unit 50 is used to pull the upper guide roller 22 to the right, thereby horizontally moving the lift target H closer to the installation target 4 via the pair of guide rollers, but this is not limited to the above. For example, in the second restraint state in which the lower guide roller 21 maintains the restraint on the lift target H and the upper guide roller 22 releases the restraint on the lift target H, the second horizontal movement unit 50 may be used to pull the lower guide roller 21 to the right, thereby horizontally moving the lift target H closer to the installation target 4 via the pair of guide rollers 20.

(Additional Note)
The lifting system of Appendix 1 is a lifting system for lifting and lowering an object to be lifted, and comprises a pair of guide rollers arranged side by side at a distance approximately along the vertical direction on an object to be lifted, the pair of guide rollers being capable of switching between maintaining and releasing restraint on the object to be lifted, a hanging means for lifting and lowering the object to be lifted via the pair of guide rollers, a first horizontal movement means for horizontally moving the object to be lifted and lowered via the pair of guide rollers away from the object to be lifted and lowered in a suspended state in which the object to be lifted and lowered is suspended by the hanging means before the object to be lifted and lowered is lifted and lowered, and a second horizontal movement means for horizontally moving the object to be lifted and lowered via the pair of guide rollers toward the object to be lifted and lowered in the suspended state after the object to be lifted and lowered is lifted and lowered.

The lifting system of Appendix 2 is the lifting system described in Appendix 1, in which the first horizontal movement means, in a first restraining state in which the restraint of the lifting target by one of the pair of guide rollers is released and the restraint of the lifting target by the other of the pair of guide rollers is maintained, pushes the other of the pair of guide rollers to the side opposite the installation target, thereby horizontally moving the lifting target away from the installation target via the pair of guide rollers.

The lifting system of Appendix 3 is the lifting system of Appendix 1 or 2, in which the second horizontal movement means, in a second restraint state in which the restraint of the lifting target by one of the pair of guide rollers is maintained and the restraint of the lifting target by the other of the pair of guide rollers is released, moves the lifting target horizontally so as to approach the installation target via the pair of guide rollers by pulling one of the pair of guide rollers toward the installation target.

The lifting system of Appendix 4 is the lifting system described in any one of Appendixes 1 to 3, and is provided with a guide lifting means for lifting and lowering the pair of guide rollers via a wire.

(Effect of supplementary notes)
According to the lifting system described in Appendix 1, the system includes a pair of guide rollers arranged side by side at a distance from each other in the vertical direction on the installation target, the pair of guide rollers being capable of switching between maintaining and releasing the restraint on the installation target, a hanging means for lifting and lowering the installation target via the pair of guide rollers, a first horizontal movement means for horizontally moving the installation target away from the installation target via the pair of guide rollers in a suspended state before lifting and lowering the installation target, and a second horizontal movement means for horizontally moving the installation target closer to the installation target via the pair of guide rollers in a suspended state after lifting and lowering the installation target. Therefore, contact between the installation target and the installation target or its surrounding components can be avoided during the lifting and horizontal movement operations of the installation target, thereby increasing the safety of the lifting and horizontal movement operations of the installation target.

According to the lifting system described in Appendix 2, in the first restraint state, the first horizontal movement means pushes out one of the pair of guide rollers in the direction opposite to the installation target, thereby horizontally moving the lifting target away from the installation target via the pair of guide rollers, so that the horizontal movement of the lifting target can be performed simply and safely, and the usability of the first horizontal movement means can be improved.

According to the lifting system described in Appendix 3, in the second restraint state, the second horizontal movement means pulls one of the pair of guide rollers toward the installation target, thereby horizontally moving the lifting target closer to the installation target via the pair of guide rollers, so that the horizontal movement of the lifting target can be performed simply and safely, and the usability of the second horizontal movement means can be improved.

The lifting system described in Appendix 4 is equipped with a guide lifting means for lifting and lowering a pair of guide rollers via a wire, so that the pair of guide rollers can be lifted and lowered efficiently, improving the workability of lifting and horizontal movement of the lifting target.

REFERENCE SIGNS LIST 1 Structure 2 Pillar 2a Pillar 3 Beam 4 Installation target 10 Lifting system 20 Guide roller 21 Lower guide roller 22 Upper guide roller 30 Suspension section 31 Hook section 32 First wire 40 First horizontal movement section 50 Second horizontal movement section 60 Safety net H Lifting target H1 Frame body H2 Scaffolding section M Worker

Claims (4)

A lifting system for lifting and lowering an object to be lifted,
A pair of guide rollers arranged in parallel at an interval approximately along the up-down direction of the installation object, the pair of guide rollers being capable of switching between maintaining and releasing restraint on the lifting object;
a suspending means for suspending the lifting target via the pair of guide rollers;
a first horizontal moving means for horizontally moving the lifting target away from the installation target via the pair of guide rollers in a suspended state in which the lifting target is suspended by the suspension means before the lifting target is lifted or lowered;
a second horizontal moving means for horizontally moving the lifting target in the suspended state via the pair of guide rollers so as to approach the installation target after lifting and lowering the lifting target;
A lifting system comprising: the first horizontal movement means, in a first constrained state in which the constraint on the lifting target by one of the pair of guide rollers is released and the constraint on the lifting target by the other of the pair of guide rollers is maintained, pushes out the other of the pair of guide rollers to an opposite side to the installation target, thereby horizontally moving the lifting target away from the installation target via the pair of guide rollers.
The lifting system of claim 1 . the second horizontal movement means, in a second constrained state in which the constraint on the lifting target by one of the pair of guide rollers is maintained and the constraint on the lifting target by the other of the pair of guide rollers is released, moves the lifting target horizontally so as to approach the installation target via the pair of guide rollers by pulling one of the pair of guide rollers toward the installation target.
A lifting system according to claim 1 or 2. A guide lifting means is provided for lifting and lowering the pair of guide rollers via a wire.
A lifting system according to any one of claims 1 to 3.

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