JPS6365596B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a method for installing equipment (reinforcing bars, concrete formwork, temporary scaffolding, etc.) inside the building under construction when constructing medium-to-high-rise buildings such as general buildings and nuclear reactor buildings. Related to cargo handling equipment for loading and unloading.

When constructing a medium to high-rise building, conventionally, the first
A construction crane as shown in the figure is used. This crane has a mast 2 erected on a base 1 installed on the ground near a building a, and the mast 2
A guide frame 3 is attached to the guide frame 3, and a revolving body 4 having an undulating boom 5, a winch, etc. is installed on the guide frame 3. When using such a crane to transport equipment into and out of a building after the steel frame has been assembled, as shown in Figure 1,
Since the equipment has to pass through the top of the building, the scaffolding can become slippery in bad weather such as rain or snow, making it dangerous and forcing cargo handling operations to be halted. Furthermore, the revolving structure 4 is always located at the top of the mast 2, and the length of the rope between the suspended load on the ground and the boom point is several tens of meters long, and in strong winds the rope is blown by the wind, making cargo handling operations impossible. For these reasons, there is a drawback that the operating rate of the crane is poor.

Furthermore, in the case of conventional cranes, equipment is brought in and taken out through the upper opening of the building, so the building must be built by raising the building from the first floor to the upper floors. For this reason, equipment must be transported to the lower floors of floors with floor coverings using elevators attached to the building.
The distance between the elevator and the equipment installation site becomes longer, which increases the burden on workers who have to transport heavy objects.
Therefore, as shown in Fig. 2, the floor surface b ₁ of each floor,
openings c ₁ , c ₂ , which communicate in the vertical direction with b ₂ .
c ₃ ……… is installed and equipment is raised and lowered through this opening, but the suspended load d
When lowering the rope, the worker must pull the rope around, increasing the danger of the work. Also,
Finally, construction work must be carried out to close the openings c ₁ , c ₂ , c ₃ , etc., further delaying the construction period.

In view of the above problems, the present invention enables cargo handling work between the inside and outside of a building regardless of the weather, reduces the burden on workers, and further expands the scope of work inside the building. The purpose of the present invention is to provide a cargo handling device having the following configuration.

In order to achieve this object, the cargo handling device of the present invention has a rotating body attached to the mast so as to be able to freely rotate around the mast, and a telescopic boom in which a plurality of booms are combined horizontally so as to be extendable and retractable. Attachment: A jib is attached to the tip of the final stage boom via a swivel device so that it can freely rotate and is tilted so that the tip side of the jib is higher than the base side, and the hoist is hooked onto the sheave attached to the jib. It is characterized by a hanging device hanging from the tip of the jib via a rope.

The present invention will be explained below with reference to the drawings. FIG. 3 is an assembly diagram showing the whole of the cargo handling device of the present invention. The cargo handling device of this embodiment is erected near a building with the legs 6a fixed, and the unit length is adjusted according to the height of the building. A slide frame including a mast 6 to which parts are added and combined, a slide frame 7 mounted to be movable up and down so as to surround the mast 6, and a lifting winch 8 installed on the slide frame 7. lifting device,
A revolving body 10 attached to the slide frame 7 via a revolving wheel 9, a driver's cab 26 attached to the revolving body 10, and a plurality of (four in the embodiment) attached to the revolving body 10. ) booms 11a to 11
A telescopic boom 11 configured by combining telescopic booms d horizontally so as to be extendable and retractable, a jib 12 rotatably attached to the tip of the telescopic boom 11, that is, the tip of the final stage boom 11d via a swing device 120, and the jib 12. It consists of a hanging device (hook block) suspended via a hoisting rope 90 hung from sheaves 133, 134 attached to the sheaves 12.

The mast 6 of this embodiment is configured in a lattice shape so that its planar shape is quadrangular. That is,
As shown in FIG. 4, a plurality of horizontal frames 15 are erected at intervals vertically between adjacent four vertical columns 14 each having a connecting seat 14a at the upper and lower ends. Between 15 and 15, the load is distributed by connecting two diagonal frames 16 at their upper ends to the middle part of the upper horizontal frame and at their lower ends to the joint between the horizontal frame 15 and the vertical column 14. The unit mast is added by aligning the connecting seats 14a and connecting them with bolts and nuts.

The slide frame 7 also has a similar combination of vertical columns, horizontal frames, and diagonal frames, and has a guide roller 160 (see FIG. 5) that rolls along the vertical columns 14 of the mast 6 inside.
By providing a sliding member, etc., the slide frame 7
A gap is provided between and the mast 6.

The housing structure for the swing ring 9 installed at the upper end of the slide frame 7 is as shown in FIG.
The outer ring 9a of the swing ring 9 is placed on the outer ring 9a and fixed with bolts 18 and nuts 19, and the lower frame 10a of the revolving body 10 is placed on the inner ring 9b rotatably supported inside the outer ring 9a, and the bolts 20 and nuts are placed on the inner ring 9b. 21. The rotating body 10 has circular holes 22, 2 in both the lower frame 10a and the upper frame 10b.
3 is provided, and the mast 6 is connected to each circular hole 22, 23.
It penetrates the part without contact. The rotating body 1
A part of the lower frame 10a of 0 extends outward to form a motor mounting flange 10c on which a turning motor 24 with a reduction gear is mounted, and an external gear integrated with the outer ring 9a is mounted on its output shaft. pinion 25 that meshes with
is attached, and the rotating body 10 is rotated by the rotation of the motor 24.
is designed to rotate around the mast 6.

The mechanism for raising and lowering the revolving body 10 and the slide frame 7 is constructed as follows. A circular stand 28 is provided at the bottom of the slide frame 7, and a winch 8 is installed on the stand 28. As shown in Figure 4,
A pin hole 30 is provided in the center of the two opposing horizontal frames 15 at the top of each mast 6, that is, the front and rear or left and right horizontal frames 15, and as shown in FIGS. A rectangular frame 34 having a pin hole 31 in the center of the front and rear or left and right frames corresponding to the mast 6 and sheave blocks 32 and 33 attached to the left and right or front and rear sides is fitted to the top of the mast 6, and the pin 35 is fitted to the top of the mast 6. It is removably attached by inserting it into the pin holes 31 and 30. In some cases, the pin hole 30 is omitted and the pin 35 is placed on the horizontal frame 15 for engagement. On the other hand, corresponding sheave blocks 36 and 37 are attached to the same surface of the slide frame 7 as the sheave blocks 32 and 33, respectively, and two lifting sheave blocks 36 and 37 are installed on the same surface of the slide frame 7, respectively. One of the ropes 38, 39, that is, the rope that is hung from the winch 8 to the sheave block 32 on the same side as this, extends from the winch 8 to the sheave block 32, as shown in FIGS. 5 to 7. A guide roller 40 is installed on the slide frame 7 to guide the rope 38 so that the intermediate portion does not come into contact with the mast 6, the slide frame 7, and the revolving structure 10. 7 and revolving structure 1
0 and the mast 6 in a non-contact manner, and the terminal end is connected to the slide frame 7. The other rope 39 is connected to the slide frame 7 so as to surround the mast 6 in a non-contact manner by the four guide sheaves 41 to 44 installed on the slide frame 7.
and the revolving body 10 in a non-contact manner, and the sheave blocks 33 and 37 are inserted into the gap between the slide frame 7 and the revolving body 10 and the mast 6 in a non-contact manner. The terminal end is connected to the slide frame 7.

The first stage booms 11a to 11d are made by combining metal beams into a rectangular tube shape, and are shown in FIGS. 8 and 9.
As shown in the figure, the first to third stage booms 11
Inside the four corners a to 11c, there are the tip of each boom and the second to fourth stage booms 11b to 11d.
The guide devices 51 and 52 for vertical guides and the guide device 5 for left and right guides are installed near the stoppers 50a to 50c for preventing the first to third stage booms 11a to 11c from coming off, which lock the stoppers 49a to 49c.
3, 53', 54, and 54' are provided, and these are made of a hard synthetic resin material and have smooth sliding surfaces. Of the left and right guide devices, the guide devices 53 and 54 on the side where guide sheaves 73 to 77 and 81 to 84, which will be described later, are provided protrude more inward than the other guide devices 53' and 54' for forming a guide sheave installation space. It has a structure that allows

As shown in FIG. 3, a boom telescoping winch 67 and a hoisting winch 68 are installed on the first stage boom 11a.
From 7, a boom extension rope 69 and a boom contraction rope 70 are wound up and let out, and when one rope 69, 70 is wound up, the other rope 70, 69 is let out by the same length. It's starting to become easier. The boom extension rope 69 is hooked onto the guide sheaves 71 and 72 at the rear of the first stage boom 11a, and then, as shown in FIGS. , a guide sheave 74 at the rear of the second stage boom 11b, a guide sheave 75 at the inside front of the second stage boom 11b, a guide sheave 76 at the rear of the third stage boom 11c, a guide at the inside front of the third stage boom 11c. It is hung on a sheave 77, and its terminal end is connected (78) to the rear part of the fourth stage boom 11d. The boom retraction rope 70 is connected to guide sheaves 79 and 80 (see FIG. 3) at the rear of the first stage boom 11a, and then, as shown in FIGS. 8 and 9,
Guide sheave 8 at the front outer side of the second stage boom 11b
1. Guide sheave 8 at the rear of the second stage boom 11b
2. It is hooked onto a guide sheave 83 on the outside of the front part of the third stage boom 11c and a guide sheave 84 on the rear part of the third stage boom 11c, and its terminal end is connected (85) to the front part of the fourth stage boom 11d. These ropes 69,
By using 70 as a set of two,
The guide sheave is made smaller and the ropes 69, 7
0 is made smaller in diameter to increase flexibility, while the guide sheaves that guide these ropes are also used as a set twice, and the tension between the ropes is reduced by making the sets relatively rotatable. We are trying to eliminate the difference between

The turning device 120 is shown in FIGS. 10 and 11.
As shown in the figure, an inner ring 122 of the swing ring is fixed to the lower part of a cylindrical body 121 fixed to the fourth stage boom 11d with bolts 123 and nuts 124, and an outer ring 125 of the swing ring is attached to the outer ring 125 having tooth grooves formed on the outer periphery. The cylindrical body 126 is fixed by bolts 127 and nuts 128, and the flange 12 provided on the cylindrical body 121 is fixed.
Electric motor (or hydraulic motor) with reducer in 9
A pinion 131 mounted on the output shaft of the motor 130 is engaged with a tooth groove on the outer periphery of the outer ring 125, and by operating the motor 130, the outer ring 125 rotates with respect to the inner ring 122. This allows the jib 12 attached to the outer ring 125 to rotate with respect to the fourth stage boom 11d.

Here, as shown in No. 10, the jib 12 has a structure that is inclined upward so that the distal end side is higher than the base end side, so that the hanging height l is set relative to the opening height H of the building. I'm trying to make it bigger.

The winding mechanism for the hoisting rope 90 is constructed as follows. As shown in FIG. 3, the hoisting rope 90 wound around the hoisting winch 68 is hooked onto guide sheaves 91 and 92 at the rear of the first stage boom 11a, then inserted into the boom 11, and passed through the 10th stage boom 11a. As shown in the figures or FIG. 12, the guide sheave 135 in the cylindrical body 121, the guide sheaves 136 and 137 in the cylindrical body 126 are hooked, and then the sheave 133 at the tip of the jib, the sheaves 141 and 142 of the hanging tool 13, and the jib The sheave 134 at the tip, the guide sheaves 138 and 139 in the cylindrical body 126, and the guide sheave 140 in the cylindrical body 121 are hung, passed through the inside of the boom 11, and the guide sheaves 100 and 10 at the rear of the first stage boom 11a are inserted.
1, and the terminal end is wrapped around the drum 102 on the first stage boom 11a. The drum 102 is adapted to take up and pay out the hoisting rope 90 in the same direction as the boom extension rope 70 and at twice the speed in conjunction with the boom extension ropes 69 and 70. For example, the diameter of the drum 102 is The diameter of the drum of the boom telescoping winch 67 is twice as large, and both drum shafts are directly connected to each other.

In the turning device 120, when the lower cylindrical body 126 rotates with respect to the upper cylindrical body 121, the positions of the guide sheaves 136, 139 relative to the guide sheaves 135, 140 change, so that no force is applied to these sheaves. In order to prevent excessive force from being applied to the guide sheaves 135, 136, 139, 140, the swing type sheave device shown in
It is prepared as follows. This sheave device includes a rope guide pipe 154 integrated with a bracket 152 to which guide sheaves 135, 136, 139, and 140 are attached via a shaft 149, and a mounting tube in which the pipe 154 is fixed to a frame 150 provided on a cylindrical body 121 or 126. 151 so that it can be rotated, and the pipe 1
A retaining link 153 is attached to the tip of 54.

In this embodiment, electric motors are used as the drive motors of the winches 67, 68 and the lifting winch 8, and the swing motor 24, and the electrical connections to these motors are as shown in FIG. done to. That is, a terminal box 103 and a cylindrical body 104 supporting the outer ring 9a are installed at the top of the slide frame 7, and the primary terminal of the terminal box 103 is connected to the cable 1 connected to the ground power source.
05, and the secondary side terminal is connected to a conductive ring 106 provided on the inner circumference of the cylindrical body 104, and the conductive ring 106 is connected to the inner cylindrical body 1 integrated with the inner ring 9b.
Electric power is supplied to the motors of the winches 67 and 68 and the swing motor 24 through a cable 109 connected to these brushes 108 and a control panel on the swing body side (not shown). are now being supplied.

Further, the secondary terminal of the terminal box 103 is connected to the power line 10.
9 and an operating line 110 to a control panel 111 installed on the slide frame 7, and the secondary side of the control panel 111 is connected to the motor of the lifting winch 8, the safety rope winding motor 112, and the emergency brake. The output line of the tension detector 114 of the lifting ropes 38 and 39 is connected to the control panel 111. The details of the safety rope retraction motor 112 and the emergency brake operating device 113 are not shown in the figure, but to give an overview, the safety rope retraction motor 112 is installed on the slide frame 7, and is connected to the bracket by the pin 35, for example. A safety rope 117, which is hung on a sheave 116 suspended via a sheave 115 and tied at one end to the slide frame 7, is wound up as the slide frame 7 moves up and down so that the tension of the safety rope is constant. On the other hand, when the tension detector 114 detects a decrease in tension due to rope cutting, etc., the emergency brake operating device 113 operates the brake of the safety rope retraction motor to move the slide frame 7 and the revolving structure 1.
0 and the boom 11 are supported by a safety rope 117.

FIG. 14 shows a working situation using the cargo handling device of this embodiment. When suspending equipment such as reinforcing bars, concrete forms, temporary scaffolding, etc. from the ground, the telescopic boom 11 is kept in the retracted state, and the hoisting drive the winch 68 to lower the hanging tool 13 to the ground,
After hanging the equipment on the hoist 13, the hoisting winch 68
is driven in the hoisting direction to hoist the hoist 13 until it is close to the jib 12, then the swing motor 24 is driven to direct the boom 11 toward building a, and the boom extension winch 67 is moved to extend the boom. Rope 69
is driven in the direction in which it is wound. The rope 69 is connected to the guide sheave 7 as shown in FIGS. 8 and 9.
3 to 77, the rope 69
By winding up the rope 6, the boom 11
The boom retraction rope 70 is extended by the same length. At this time, the hoisting rope 90 wound around the drum 102 having twice the diameter of the drum of the winch 67 is also paid out at twice the speed of the rope 70, but the lowering speed of the hoist 13 is 90, the height of the hanging tool 13 is kept constant regardless of the extension of the boom. By such a boom extension operation, the suspended load d can be carried into the building through the opening e on the side of the building a. After carrying the equipment into the building, by operating the motor 130 and rotating the jib 12, it is possible to carry the equipment into a suitable position, and by pointing the jib 12 forward, it is possible to move the equipment into the deep parts of the building. It is now possible to carry in and out equipment, and even if there is an obstacle f inside the building, as shown in the cross-sectional plan view of Fig. 15, the boom 11 and jib 12 can be moved in the same direction to avoid the obstacle f. By inserting the tip of the boom into the back of a and then rotating the jib 12, the hanging tool can be brought close to the target location in the same way as when there are no obstacles. On the other hand, if the boom telescoping winch 67 is driven in the direction of winding the boom retracting rope 70, the boom 11 will retract in the opposite direction, and the suspended load d will be carried out to the outside of the building while maintaining a constant height. It will be done. In this case, as shown in FIG. 15, even if there is an obstacle f on the way, the hanging tool can be positioned near the equipment to be carried out. Moreover, since the jib 12 is rotatable, the working range inside the building is expanded.

With such operations and operations, cargo handling work can be performed even in bad weather such as rain or snow. That is, by providing a roof for building a and performing work while preventing rain and snow from entering the building, workers can work without fear of the scaffolding slipping. Additionally, since the length of the hoisting rope from the tip of the boom to the ground is shorter than that of conventional cranes, the rope is less likely to be blown by the wind, making it possible to work in strong winds. In particular, as in this embodiment, by driving the lifting winch 8, the boom 11 is moved between the revolving body 10 and the slide frame 7.
If it is possible to raise and lower the load along with the boom 11, in the case of strong winds, the work can be carried out with the length of the rope between the lifting gear 13 and the tip of the jib 12 shortened (that is, the suspended load can be raised and lowered while raising and lowering the boom 11). ,
It is possible to completely prevent the danger caused by the rope being stirred. In addition, the tip of the boom can be inserted into the building by extending and retracting the boom, and the jib is attached to the tip of the boom so that it can be rotated, making it possible to transport equipment to a suitable location and close to the equipment to be transported. By positioning the hanging tool in the desired position, it is possible to reduce the distance that the worker must transport the equipment, thereby reducing the work burden. Additionally, since the boom is extended and retracted using a winch and rope, it is a combination of three or more booms and can be extended and retracted continuously and smoothly compared to when a hydraulic cylinder is used for the extension and retraction. In conjunction with the expansion of the working range due to the above-mentioned jib rotation, it is possible to improve the working efficiency.

Furthermore, by making the height of the boom 11 changeable by the lifting device, it is possible to work on any floor without having to fix the order, which increases mobility. As a lifting device for the boom, it is also possible to use a hydraulic cylinder used in known climbing cranes that moves the slide frame up and down like an inchworm, but as in this embodiment, a lifting winch 8 is used. If used, the boom can be raised and lowered instantly, improving maneuverability, and this cargo handling device can also be used as an elevator, and it is also possible to place suspended loads deeper than in an elevator. Furthermore, it is also possible to move equipment on one floor to another floor, for example, from the position indicated by the two-dot chain line to the position indicated by the solid line.

As described above, according to the cargo handling device of the present invention, work can be carried out in bad weather or strong winds, and there is no need to close the openings in the floors of buildings, so the construction period can be shortened. It becomes possible. In addition, by having a horizontally extendable boom and a pivotable jib at the tip, it is possible to transport equipment to the appropriate location inside the building, and to bring lifting equipment close to the equipment. The burden on workers is reduced, safety is improved, and the work area inside the building can be expanded. In addition, in the present invention, the jib at the tip of the beam is sloped so that the tip side from which the hanging tool hangs is higher, so the hanging height can be increased when loading and unloading cargo between floors, and relatively large Loads can be easily brought in and taken out.

[Brief explanation of drawings]

Figure 1 is a side view of a conventional cargo handling crane, Figure 2 is a side view of a conventional cargo handling crane.
The figure shows a working situation when a conventional crane is used. Figures 3 to 15 show an embodiment of the cargo handling device according to the present invention. Figure 3 is a perspective view of the entire assembly shown in the assembled state. Figure 4 is a perspective view of the top of the mast, No. 5
The figure is a vertical cross-sectional view showing the combined structure of the mast, revolving body, and lifting device of the cargo handling device, FIG. 6 is an explanatory diagram of the rope hooking of the lifting device, and FIG. 7 is a plan view showing the arrangement of the rope of the lifting device. Figure 8 is a diagram of the boom combination and extension rope arrangement, and Figure 9 is A of Figure 8.
An arrow view, FIG. 10 is a side view showing the boom tip,
FIG. 11 is a cross-sectional view showing the configuration of the jib rotating device, FIG. 12 is an arrangement diagram of the hoisting rope, and FIG. 13 is a cross-sectional view showing the configuration of the sheave used in the jib rotating device.
Fig. 14 is a side sectional view showing the working situation of the cargo handling equipment, and Fig. 15 is a plan sectional view as well. 13, 13a,
13b... Hanging tool, 67... Boom extension winch, 68... Hoisting winch, 69... Boom extension rope, 70... Boom retraction rope, 90
... Hoisting rope, 120 ... Swivel device.

Claims (1)

[Claims] 1. A rotating body is attached to the mast so as to be able to rotate freely around the mast, a telescopic boom consisting of a combination of multiple beams that can be extended and contracted in the horizontal direction is attached to the rotating body, and a rotating device is attached to the tip of the final stage boom. The jib is attached so that it can rotate freely through the jib and is tilted so that the tip side of the jib is higher than the base side, and the hoisting equipment is suspended from the tip of the jib by a hoisting rope hooked to a sheave attached to the jib. Characteristic cargo handling equipment.