JPH02272168A - Load-hanging structure of crane and temporary-type lift loading base using same - Google Patents

Abstract

PURPOSE:To reduce the cost of carrying facility as well as make the transportation of long parts in narrow area easier by a method in which a hanger is set through a turnable (around vertical shaft) wire guide on the tip of crane boom, and a loading base provided on the outside of scaffold is vertically moved by crane winch. CONSTITUTION:A turnable (around vertical shaft) wire guide 5 is set through a turnable (around horizontal shaft) supporter 14 on the center of the horizontal boom 3b of a tilting boom 3. A hanging wire 7 from the winch is connected to a traverser 9 through the boom 3 and the guide 5. In carrying long parts in narrow area, the guide 5 is turned through 90 deg. and passed through the boom 3. A loading base 27 is also provided through a guide 26 for vertical movement for the scaffold 23 and moved vertically by a wire 7 to carry tools to each stair, thereby saving the cost of facilities. The tools and materials can thus be carried along at low cost easily.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a crane cargo suspension structure and a temporary lift platform using the same.

<Conventional technology> A. Crane load-suspending structure The conventional crane load-suspending structure involves installing a winch on a swivel platform equipped with a boom, and letting out a piece of hanging wire from the winch. At the same time, the end of the hanging wire is connected and fixed to a boom, etc., and a single hook with a pulley is attached to the middle of the hanging wire. It was composed of

For example, PCa plates for steel beams, exterior walls, and PCa plates for floor plates.
When suspending a load such as materials such as a plate, transporting it to a predetermined position so that it takes a predetermined posture relative to the structure, and positioning it, the worker pushes the suspended load with a rope, hand, bar, etc. The position of the suspended load was adjusted to the specified position.

B. Temporary lift platform using a crane's load-suspending structure In conventional lift platforms, masts are generally installed along the main framework, such as steel frames, and the platform can be raised and lowered from these masts. A wire fed out from a winch installed on the ground side is wound around a sheave installed on the second side of the structure, and the lower end of the wire is connected to the loading platform, so that the loading platform can be raised and lowered by the drive of the winch. However, since the weight of the lift platform and the equipment it lifts is placed on the mast, it is necessary to have a high-strength mast, and the mast must be firmly fixed. However, the mast was expensive and installation was time-consuming.

Therefore, a small crane was erected and supported on the framework scaffold, and a loading platform was installed so that it could be raised and lowered along a pair of guide rails erected in the internal space of the framework scaffolding. It has been proposed that the loading platform be hooked to a suspension ring attached to the center of the upper beam of the crane, and be driven up and down using the winch of a crane.
(See Publication No. 8-784).

<Problems to be solved by the invention> a. Disadvantages of the crane's cargo suspension structure However,
Even if the hook is hooked to the load and the direction of the load is adjusted, when the load is hung and lifted, the suspended load will rotate around the hanging wire, causing the hanging position to change. The disadvantage is that it cannot be adjusted to a predetermined posture, and for example, when a building structure is being constructed right up to the boundary of the site, some of the suspended cargo may protrude outside the site, resulting in a lack of safety. was there.

Furthermore, as mentioned above, when transporting materials so that they are in a predetermined posture relative to the structure, workers must adjust their posture while the materials are suspended, which is inefficient and time-consuming. However, the disadvantage was that the construction period would be extended and construction costs would increase.

B. Disadvantages of a temporary lift platform using a crane's cargo suspension structure: With a lift platform using a conventional crane, when loading cargo onto the platform, the load of the cargo is biased to one side of the pair of guide rails. However, there is a drawback that a large amount of friction is generated between the guide rail on the biased side, which not only applies a large force to lifting and lowering, but also causes damage to the guide rail and the framework scaffolding that supports it. In order to provide lifting capacity, it is necessary to construct the guide rail with high strength and to assemble the framework scaffold with high strength, which has the drawback of making the construction cost more expensive than necessary.

The present invention has been made in view of the above circumstances, and the crane load-hanging structure according to the present invention is suitable for long loads such as reinforcing bars and steel beams, PCa slabs for external walls, and PCa slabs for floor slabs.
The purpose of the temporary lift loading platform using the crane load-hanging structure according to the present invention is to enable good control of the hanging posture when hanging an A-plate, etc. To make it possible to carry in and out small items such as various equipment by using a hanging structure with a simple configuration and at low cost without reducing work efficiency.

<Means for Solving the Problems> In order to achieve the above-mentioned purpose, the crane cargo suspension structure according to the present invention has a wire guide installed in the boom so as to be rotatable around a vertical axis. A plurality of hanging wires connected to the LJ and the winch are passed through the rotation center of the wire guide and are suspended from horizontally spaced locations on the wire guide, and each of the hanging wires is provided with: It is constructed by connecting hanging devices spaced apart in the horizontal direction.

The hanging device may consist of only a hook and connect each of the hooks to multiple hanging wires, or by providing hanging portions at intervals in the horizontal direction on the I/rubber and using the hanging portions. A hook or a sling wire may be connected to each of the traversers, and the I-rahasa and a plurality of hanging wires may be connected at intervals in the horizontal direction of the traverser.

In order to achieve the above-mentioned purpose, the temporary lift platform using the crane cargo suspension structure according to the present invention is provided with a lifting guide attached to the outer surface of the framework scaffold or frame, and a lifting guide attached to the lifting guide. A loading platform is attached so that it can be raised and lowered, and the loading platform and each of the plurality of hanging wires in the load suspension structure of the crane are interlocked and connected at a predetermined interval in the horizontal direction, and the loading platform is moved by driving a winch of the crane. The device is configured to be driven up and down.

<Function> According to the configuration of the cargo suspension structure of the crane according to the present invention, the cargo is suspended by the hanging tool, and the wire guide is driven and rotated around the vertical axis in the suspended state, thereby suspending the cargo. It is possible to adjust the hanging posture of the machine to a predetermined posture, transport it along the structure, or lower it to a predetermined work location in a predetermined posture.

Construction of a temporary lift loading platform using the cargo suspension structure of a crane according to the present invention Accordingly, in a frame in which a main frame such as a steel frame has been constructed, transportation of materials such as a steel frame during the frame construction work is necessary. We focused on the fact that the crane that was used is no longer needed, and even when the frame is still being constructed, it is rare for cranes to move 1nN and transport equipment by raising and lowering the lift platform at the same time. Using the above-mentioned crane's cargo suspension structure, a lifting guide is attached to the outer surface of the framework scaffold or frame, and the cargo platform attached to it so that it can be raised and lowered and each of the crane's multiple hanging wires are horizontally attached. By simply interlocking and connecting them at a predetermined interval in the direction, the loading platform can be driven up and down while supporting the load of the cargo mounted on the loading platform at a position close to the lifting guide.

<Example> Next, an example of the present invention will be described in detail based on the drawings.

*First embodiment of the lane construction> FIG. 1 is an overall front view of the first embodiment of the crane cargo suspension structure according to the present invention. A support stand 2 is provided to be rotatable around a center X2, and a portal boom 3 is provided to the support stand 2 to be able to rise and fall around an axis 21 in the horizontal direction.

Furthermore, as shown in the side view of the main part in FIG. 2 and the perspective view of the main part in FIG. The horizontal boom part 3b is connected to the horizontal boom part 3b, and the horizontal axis P is located at the longitudinal center of the horizontal boom part 3b.
A support member 4 is provided to be rotatable around 2.

A wire guide 5 is provided on the support member 4 so as to be rotatable around a vertical axis X1 perpendicular to the horizontal axis P2.

On the support platform 2 there are winches 6 which are driven in synchronism with each other.
6 is provided, and a suspension wire 7 from each winch 6.6 is provided within the vertical boom portions 3a, 3a.
A third sheave 8c is provided at both ends in the longitudinal direction within the horizontal boom portion 3b, and a third sheave 8c is provided within the support member 4. fourth sheaves 8d, 8d, fifth sheaves 8e, 8e provided at the center of the wire guide 5 in its longitudinal direction, which is the center of rotation, and a sixth sheave 8 provided at each longitudinal end of the wire guide 5.
Both hanging wires 7.
A traverser 9 is connected to each of the traversers 7.

A carrying capacity 10 is detachably attached to the tiger haza 9. Further, the traverser 9 is provided with hanging portions 9a9a at predetermined intervals in the horizontal direction.
As shown in the perspective view of FIG.
In each case, the slings are constructed in such a way that wires 1.1, wires with hooks, etc. can be releasably connected thereto.

A gear portion 12 is integrally connected to the wire guide 5, and a gear 14 that meshes with the gear portion 12 is attached to a motor shaft 13a of a first electric motor 13 attached to the support member 4.
is integrally attached, and while the support member 4 is rotated around the horizontal axis 22, the wire guide 5 is driven and rotated around the vertical axis X1, and even if the object is long, the By changing the posture so that the longitudinal direction is perpendicular to the longitudinal direction of the horizontal boom portion 3b of the gantry boom 3 and passing through the gantry boom 3, the gantry boom 3 is moved over the mast 1. It is constructed so that it can be raised and lowered.

As clearly shown in the perspective view of the main part in FIG.
The mast 1 is fitted onto the upper end of the mast 1 so that it can only rotate freely.
A gear part 15 is connected to the side, and a gear 17 is provided on the support stand 2 side, which is driven by a second electric motor 16 and meshes with the gear part 15. The support base 2 is configured to be driven and rotated around the vertical axis X2, which is the longitudinal direction of the mast 1.

The lower 9:i; side of each of the vertical boom portions 3a, 3a is projected downward from the connection part with the support base 2, and both of the projecting ends are connected to each other as shown in the partially cutaway plan view of the main part of FIG. and the seventh
As shown in the front views of the main parts in the figures, they are connected via a U-shaped tuning frame 18, and at both ends of the tuning frame 18 there is a A hydraulic cylinder 19 rotatably mounted around a horizontal axis 23 is interlocked with the hydraulic cylinder 19.
Even if there is a deviation in the strokes of the two hydraulic cylinders 1919 during the expansion and contraction operations, the structure is such that the deviation can be corrected by the rigidity of the synchronized frame 18 and an unbalanced load applied to the left and right vertical boom portions 3a23a can be avoided. .

With the above configuration, as shown in the perspective view of the used state of building A1. When constructing Building B on a narrow site adjacent to Building A2, the mast 1 can be easily moved by simply hoisting and lowering the hanging wire 7.7 and raising and lowering the portal boom 3 in a straight line. It is now possible to transport construction materials between one side and the other.

At this time, by turning the support base 2 by a slight angle, the traverser 9 can be moved to a convenient position for suspending the materials and a convenient position for transporting the materials after being unloaded. I can do it.

Further, by driving and rotating the wire guide 5, the posture of the suspended cargo can be adjusted as appropriate, such as along the outer surface of the building B or a posture suitable for installation.

<Second Embodiment> FIG. 9 is a side view showing a second embodiment. The base end side of the portion 3a is mounted on the support base 2 so as to be able to rise and fall around the horizontal axis 21.

A support member 4 is attached to the distal end side of the horizontal boom portion 3b so as to be rotatable around the horizontal axis 22,
A wire guide 5 is provided on the support member 4 so as to be rotatable around the vertical axis X1, as in the first embodiment.

A first reinforcing frame 21 is connected to the upper end side of the vertical boom portion 3a and the horizontal boom portion 3b.

Further, an L-shaped reinforcing frame 22 is connected to a location close to the base end side of the vertical boom portion 3a, and the base end side of the reinforcing frame 22 is connected to the undulation axis P1 on the base end side of the vertical boom portion 3a. It is attached to the support base 2 so as to be rotatable around the same axis.

According to the crane for narrow sites according to the second embodiment, the length of the horizontal boom portion 3b is set arbitrarily, and the rotation axis X1 for attaching the arm member 5 to the horizontal boom portion 3b
By increasing the distance between the vertical boom portion 3a and the vertical boom portion 3a, the bulk of the cargo to be transported is regulated by the distance between the horizontal boom portions 3a, 3a, as in the case of the first embodiment configured with the portal boom 3. This has the advantage that even large loads can be transported satisfactorily without colliding with the vertical boom portion 3a.

Third Embodiment> FIG. 10 is a side view showing the third embodiment, and is similar to the second embodiment described above.
In the boom 3 of the embodiment, the horizontal boom portion 3b is connected to the tip of the vertical boom portion 3a so as to protrude on the side opposite to the side where the second reinforcing frame 22 is attached, and
A first reinforcing frame 21 is configured to be connected to the upper end side of the vertical boom portion 3a and the horizontal boom portion 3b. Other configurations, such as attachment of the boom 3 to the support base 2, are the same as those of the second embodiment, and description thereof will be omitted.

In the above embodiment, the hanging wire 77 is connected to the wire 11 through the traverser 9, and the sling is connected to the wire 11. Various hanging configurations are possible, such as attaching a hook instead of the traverser 9, or suspending the hanging wires 7 and 7 from both longitudinal ends of the wire guide 5 and connecting hooks to their tips. can be adopted, and these are collectively called hanging tools.

In this example, a tower crane used for constructing buildings, etc. is shown, but in place of the above-mentioned mast, a fixed base equipped with outriggers and weights can be used in locations such as material storage areas. The present invention may be applied to a stationary crane that is equipped with a support stand 2.

FIG. 11 is a schematic perspective view showing an example of a temporary lift loading platform using a crane cargo suspension structure, and FIG. 12 is a
It is a plan sectional view of the main part, and a framework scaffolding 23... is attached to a predetermined outer surface of the frame B, and the framework scaffolding 23...
A pair of pipes 24 and 24 are sandwiched between each of the frame scaffolding materials that are adjacent to each other at a predetermined interval, and lifting guides 26 are attached via clamp fittings 25.

Each of the lifting guides 26 and 26 has a guide groove 29 into which a first guide roller 28 attached to each side of the loading platform 27 is fitted, and a guide groove 29 provided at each of both lateral sides of the loading platform 27. A guide surface F that comes into sliding contact with the second guide roller 30 is provided, and the sliding contact with the inner surface of the guide groove 29 of the first guide roller 28 causes the loading platform 27 to be displaced in the direction toward and away from the frame B. The accompanying rotation prevents the loading platform 27 from displacing in the horizontal direction along the frame B.
This is prevented by sliding contact of the second guide roller 30 with the guide surface F.

In the figure, numerals 31 and 31 indicate equipment entrances provided at predetermined intervals in the vertical direction, such as every second floor, and each of these equipment entrances 31 has a shutter 32 made of a full mesh. is provided so that it can be opened and closed.

With the above configuration, the lifting guides 26.26 are attached to the framework scaffolding 23..., and the lifting guides 26.
．． A loading platform 27 is attached to the loading platform 26 so as to be freely raised and lowered, and the hanging wire 7.7 of the crane C is interlocked and connected to the loading platform 27, and by driving the inch 6 of the crane C, the loading platform 27 is driven up and down, and is loaded onto the loading platform 27. Various types of equipment can be carried in to a predetermined floor or carried out from a predetermined floor to the outside while preventing an unbalanced load from being placed on the lifting guide 2626.

This invention may be constructed by providing lifting guides 26, 26 on the outer surface of the frame after the framework scaffolding 23... is removed.

As the crane used for the temporary lift loading platform using the cargo suspension structure of the crane according to the present invention, the cranes of the types described in the second and third embodiments can also be applied.

<Effects of the Invention> According to the cargo suspension structure of the crane according to the present invention, the hanging posture of the cargo can be adjusted by rotating the wire guide. Even when transporting long loads such as reinforcing bars or steel beams in places where space is limited, the load should be suspended by adjusting the posture so that the longitudinal direction of the long items aligns with the outer circumferential surface of the structure. This has made it possible to reliably prevent part of the cargo from protruding outside the premises, making it possible to carry out transportation work safely.

In addition, when suspending steel beams, PCa slabs for external walls, PCa slabs for floor slabs, etc., the hanging posture can be adjusted while the installation is carried close to the location. It can be transported in a fixed position, and even if the worker has to adjust his/her posture during installation, only slight adjustments are required, making it possible to install the load in a designated position more efficiently and safely. .

According to the temporary lift loading platform using the crane load-hanging structure according to the present invention, when crane work is not required, the weight of the loading platform and the equipment mounted thereon can be supported by the winch of the crane. Since the loading platform can be raised and lowered using a winch, it is possible to eliminate the need for a winch dedicated to raising and lowering the loading platform, and the weight of the loading platform and the equipment mounted on it is not placed on the lifting guide, making it possible to raise and lower the height of a conventional mast. Strong members are no longer required, and it is now possible to carry in and out small items such as various equipment at low cost with a simple structure without reducing the overall work efficiency of the construction work. .

Furthermore, multiple suspension wires in the cargo suspension structure of the crane described above are interlocked and connected horizontally at predetermined intervals to the cargo platform, supporting the load of the cargo loaded on the cargo platform at a position close to the lifting guide. Therefore, even if there is an imbalance in the load of the cargo loaded on the loading platform, the force exerted on the lifting guide due to this can be reduced, and the friction between the lifting guide and the lifting guide is reduced. There is no need for the lifting guide to have high strength, and compared to the conventional case where the loading platform is connected and supported via a single hook, the lifting guide can be constructed at a lower cost, and the lifting guide is provided on the outer surface of the framework scaffold. Even in such cases, it is economical because it is not necessary to increase the assembly strength of the framework scaffolding, and a large lifting capacity can be provided without unnecessarily incurring construction costs.

[Brief explanation of drawings]

The drawings show an embodiment of the load-suspending structure of a crane according to the present invention. FIG. 1 is an overall front view of the crane of the first embodiment, FIG. 2 is a side view of the main parts, and FIG. 3 is a main part. perspective view of the section;
Figure 4 is a perspective view of the main part of the sling showing how the wires are connected, Figure 5 is a perspective view of the main part, Figure 6 is a partially cutaway plan view of the main part, and Figure 7 is a front view of the main part. 8 is an overall schematic perspective view for explaining the usage state, FIG. 9 is an overall side view of the crane of the second embodiment, and FIG. 10 is an overall side view of the crane of the third embodiment. FIG. 11 is a perspective view showing an embodiment of a temporary lift platform using the crane cargo suspension structure according to the present invention, and FIG. 12 is a sectional view of the main parts thereof. 3... Portal boom 5 as a boom... Wire guide 6... Winch 7... Hanging wire 23... Frame scaffolding 26... Lifting guide 27... Loading platform Xl...・Rotating shaft core of wire guide Applicant: Takenaka Construction Co., Ltd. Applicant: Kitai Seisakusho Co., Ltd. Agent: Patent attorney Sugitani
Tsutomu diagram diagram

Claims (4)

[Claims] (1) A wire guide is provided on the boom so as to be rotatable around a vertical axis, and a plurality of hanging wires connected to the winch are passed through the center of rotation of the wire guide. 1. A structure for suspending cargo for a crane, characterized in that the hanging tools are suspended from horizontally spaced locations and are connected to each of the hanging wires at horizontally spaced intervals. (2) A load-suspending structure for a crane, in which the hanging tool according to claim (1) is constituted by hooks, and the hooks are connected to respective hanging wires. (3) A crane in which the hanging device according to claim (1) is constituted by a traverser equipped with a hook, and a hanging wire is connected to each of the horizontally spaced locations of the traverser. Luggage hanging structure. (4) A lifting guide is attached to the outer surface of the framework scaffold or the frame, and a loading platform is attached to the lifting guide so as to be able to rise and lower, and the loading platform and the plurality of hanging wires according to claim (1) are attached. A temporary lift loading platform using a crane load-suspending structure, characterized in that the loading platform is interlocked and connected horizontally at a predetermined interval, and the loading platform is driven up and down by driving a winch of the crane.