JPH0421029B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a steel beam erecting device used for assembling beams between columns.

[Prior Art] Conventionally, the work of assembling steel beams between columns has required a crane from beginning to end, from when the beam begins to be suspended by a crane until the beam is finished being assembled between columns. In other words, in the past, the beam was first suspended by a crane, then the crane was operated to position the beam at the attachment point between the columns, and the beam was held suspended by the crane. are assembled between the pillars. in fact,
Although the crane is removed when the beam craftsman temporarily assembles the beams between the pillars, during the temporary assembling work, for example, the time required to suspend two girders at the same time and temporarily assemble them is taken up by the crane. However, its actions were always restricted as it was only used for assembling beams.

[Problems to be Solved by the Invention] In the above-mentioned conventional method of constructing steel beams, the crane is always restrained during the beam assembly work, so the operating rate of the crane is low, and the construction period can be shortened and This has become a major problem in efforts to reduce costs. Moreover, since the beams are hung unsteadily from the end of the crane's arm, it is especially necessary for a craftsman who is on top of the pillars at a high place to guide the beams carried by the crane to the installation points between the pillars. The work of bringing in the beams to be contained becomes extremely dangerous,
Improvement was desired. In addition, a method has also been considered in which the horizontal main rod and beam are suspended parallel to each other from a crane, and the horizontal main rod is raised and lowered along the pillars, and the beams suspended below are attached between the columns. However, even with this method, the crane is restrained from beginning to end, resulting in a low operating rate of the crane, and it is difficult to ensure sufficient stability since the crane is used, making it difficult to set the beam in a fixed position. It wasn't.

This invention solves these problems.

[Means for Solving the Problems] A steel beam erecting device according to the present invention has a main body that is long enough to span between the capitals of columns on which steel beams are assembled, and a A clamping mechanism is provided for fitting the column head and clamping the column head, and an abutting roller is provided below the clamping mechanism and comes into contact with one side of the column head to be clamped by the clamping mechanism, and The present invention is characterized in that a connecting means connected to a crane is provided on the upper part of the main body, and an elevating mechanism for suspending a beam and raising and lowering the beam is provided in the middle part of the main body.

[Example] Hereinafter, a steel beam erecting device according to the present invention will be explained based on the drawings.

FIG. 1 shows a schematic configuration of the erection apparatus 1 of the present invention in a usage situation. This erection device 1 has a beam 2
It has a length spanning between the capitals of the columns 3 to which the wire 4 is assembled, and a clamp mechanism 1a for clamping the column capitals is provided at both ends, and a wire 4 is installed in the middle part.
An elevating mechanism 1b that suspends the beam 3 and raises and lowers the beam 3 is provided. Moreover, a connecting means 1c connected to a crane (not shown) is provided at the upper part. The clamping mechanism 1a has a structure in which the post is clamped by an outer claw 5, an inner claw 6, and left and right guides 7, 8, and this clamping mechanism 1a is slidably adjusted along the longitudinal direction of the erection device 1. It is becoming more and more like this. The clamp mechanism 1a and the lifting mechanism 1b are remotely controlled by radio.

2, 3, and 4 show details of the clamp mechanism 1a and the lifting mechanism 1b.

The clamp mechanism 1a includes a first cylindrical body 22 attached to the end of the main body 21 of the erection device 1, second and third cylindrical bodies 23 provided inside this cylindrical body 22, It is constructed using a triple fitting structure with 24 as the base. Second and third cylindrical bodies 23, 2
4 are provided slidably along the longitudinal direction of the main body 21, respectively. A reciprocating type first hydraulic cylinder 25 is disposed between the main body 21 and the second cylindrical body 23, and the second cylindrical body 2
3 and the third cylindrical body 24, a reciprocating type second
A hydraulic cylinder 26 is provided. Both hydraulic cylinders 25, 26 are connected to a hydraulic unit 27 on the main body 21 which is remotely controlled by radio. Therefore, when the first hydraulic cylinder 25 expands and contracts under the control of the hydraulic unit 27, the second and third cylindrical bodies 2 are moved relative to the main body 21.
3 and 24 slide together and the second hydraulic cylinder 26 expands and contracts, the second cylindrical body 2
3, the third cylindrical body 24 slides.

At the bottom of the second cylindrical body 23 there is an outer claw 5 which is protruded forward.
The third cylindrical body 24 is provided with an outer claw 5 and left and right guides 7 and 8 at the lower part thereof. The left and right guides 7 and 8 are attached to the left and right guide rollers 28 on the lower holding block 28 of the third cylindrical body 24.
9, 30, these guide rollers 29,
It has a structure in which the mutual spacing between the 30 parts can be adjusted. That is, the left and right guide rollers 29, 30
are provided on the left and right clamps 31 and 32, respectively, eccentrically from the shafts 33 and 34 that are the centers of rotation thereof, and both shafts 33 and 34 are held at fixed positions on the left and right sides of the holding block 28, and
The left and right clamps 31 and 32 are connected to the third
The hydraulic cylinder 35 is connected to the hydraulic cylinder 35. The left clamp 31 is connected to a hydraulic cylinder 35 by a link 36.
The right clamp 32 is connected to the hydraulic cylinder 35 via a link 37 and a clamp 38, which together with the clamp 32 constitute a parallel link, and then via a link 39. Hydraulic cylinder 3
5 is held by a holding block 28 and connected to the previously mentioned hydraulic unit 27, and when the hydraulic cylinder 35 expands and contracts under the control of this hydraulic unit 27, the left and right guide rollers 29, 30
are both displaced toward and away from each other by the same extent.

By the way, the clamp 38 constituting the above-mentioned parallel link is rotatably provided with a roller 41 that protrudes at an eccentric position from the shaft 40 that is the center of rotation. This abutment roller 41 is located directly below the right guide roller 30 and is displaced in the same manner as the guide roller 30.

Further, the elevating mechanism 1b includes a wire 4 between the pair of drums 42 and 43 disposed at the upper part of the first cylindrical body 22.
is wound a plurality of times, and one drum 42 is a fixed side, and the other drum 43 is a movable side that is displaced by a fourth hydraulic cylinder 44. This hydraulic cylinder 44 is connected to the previously mentioned hydraulic unit 27.
When the hydraulic cylinder 44 expands and contracts under the control of 7, the movable drum 43 moves against the fixed drum 42.
The lower end of the wire 4 moves up and down depending on the amount of movement.

Such a clamp mechanism 1a and a lifting mechanism 1b
are arranged symmetrically on each of the two sides of the body 1.

Furthermore, in this example, the connecting means 1c includes a hanging wire 10 having a length approximately equal to the distance between the floor where the beam 2 is assembled and the working floor below that floor.
It is said that

Next, the operation of the erection apparatus 1 constructed as described above will be explained in accordance with the procedure for assembling the beam 2 shown in FIGS. 5 to 11. In this example, the work is carried out by lifting two beams 2 at the same time.

First, as shown in FIG. Two beams 2 are suspended horizontally from a wire 4 at a predetermined interval. FIG. 1 shows a case where the hanging wire 10 of the erection device 1 is hung on the hanging hook 9 via the hanging beam 11.

Then, as shown in FIG. 6, the crane is operated to move the erecting device 1 and the two beams 2, and the erecting device 1 is positioned between the capitals of the columns 3. and,
A craftsman guides the construction device 1 by using an intermediary rope 12 hanging from the construction device 1, and aligns the clamp mechanism 1a of the construction device 1 with the column capital from above. At this time, the abutting roller 41 is used. That is, the outer claw 5 of the clamp mechanism 1a,
After suspending the erection device 1 so that the inner claw 6 and the guide rollers 29, 30 of the left and right guides 7, 8 are located above the column capital, and the abutment roller 41 is located below the column capital, The erection device 1 is moved horizontally to abut the abutment roller 41 against one side of the column capital. At this time, since the abutment roller 41 is located directly below the right guide roller 30, the column capital inevitably touches the outer claw 5 and the inner claw 6.
It is located directly below the clamping point between the left and right guide rollers 29 and 30. Therefore, from this state, by lowering the erection device 1 while bringing the abutment roller 41 into contact with one side of the column capital, the column capital is quickly positioned at the clamping location of the clamping mechanism 1a.

For this positioning, the interval between the left and right guide rollers 29, 30 is adjusted in advance according to the width of the column 3. For example, as shown in FIG. 3, the spacing is adjusted to the widths l ₁ , l ₂ , l ₃ of the target columns 3 plus a slight clearance. This adjustment is performed by operating the third hydraulic cylinder 35,
Also, the abutting roller 41 is the right guide roller 30.
The guide roller 30 is always located directly below the guide roller 30. When the column head enters between the guide rollers 29 and 30 whose spacing has been adjusted in this way, the erection device 1 descends along the column 3 by the guiding action of the abutment roller 41. Then, when the column capital enters between the guide rollers 29 and 30, the erection device 1 is reliably positioned between the column capitals. At this time, the column head smoothly enters between them due to the guiding action of the guide rollers 29 and 30. However, the positioning of the erecting device 1 with respect to one side of the column head is done in two places: the guidance by the abutment roller 41 from the initial point in time, and the guide by the right guide roller 30 from the time when the erecting device 1 is lowered. Since this is carried out by the guide, the erection device 1 can be positioned with stability with one side of the column head as a reference. At this time, in order to increase the stability of the erection apparatus 1 at the initial stage, a plurality of abutment rollers 41 are provided at the top and bottom so that the abutment rollers 41 hit one side of the column head at the same time. It is advantageous to do so.

After completing such positioning, the column head is gripped by the outer pawl 5 and the inner pawl 6 of the clamp mechanism 1a, as shown in FIG. The displacement of the inner claw 6 in the longitudinal direction of the erection device 1 is determined by the first
This is done by the expansion and contraction movement of the hydraulic cylinder 25,
This displacement of the outer claw 5 with respect to the inner claw 6 is performed by the telescopic operation of the second hydraulic cylinder 26 by radio control. By such a gripping operation, the erection device 1 is fixed in a state where it is spanned between the column capitals. Then, the lifting hook 9 of the crane is lowered to a working floor where work can be done in a safe working position, and the hanging wire 10 of the erection equipment 1 is removed from the lifting hook 9. From this point on, the role of the crane for suspending and holding the beam 2 is completely transferred to the erection device 1. Therefore, the crane is released from this work location and can perform work such as erecting columns and beams at another location without being restricted in any way until it is called out next time.

Next, as shown in Figure 8, a worker goes up to the gate on the lower floor of the two floors where the beam 2 is to be assembled, remotely controls the lifting mechanism 1b by radio, and The side beams 2 are raised and placed between the corresponding joints. At that time, if the interval between the joints is larger or smaller than the length of the beam 2, the clamp mechanisms 1a at both ends are slid in the longitudinal direction of the erection device 1 by radio control, Adjust the spacing between the capitals to match the spacing between the joints to the length of the beam 2. Clamp mechanism 1a
This sliding is performed by the expansion and contraction movement of the first hydraulic cylinder 25. At this time, the first hydraulic cylinders 25 in the clamp mechanisms 1a at both ends are simultaneously expanded and contracted, and both clamp mechanisms 1a are simultaneously displaced by the same amount in the direction toward each other and in the direction away from each other. The spacing between the column heads can be adjusted while keeping the center of the erection device 1 and the suspended beam 2 aligned. By the way, in the past, the craftsman was known as Shino. The spacing between the joints was adjusted using jacks, etc., and adjusting work at high places was extremely dangerous.

In addition, when it is necessary to adjust the horizontal position of the beam 2 with respect to the joint gap, the position adjustment can be done by changing the amount of expansion and contraction of the first hydraulic cylinder 25 in the clamp mechanism 1a at both ends, and This is done by horizontally displacing the In addition, the upper beam 2 to be raised together with the lower beam 2 to be assembled
is located slightly below the corresponding upper joint when the lower beam 2 is placed between the corresponding upper joints. The hanging intervals of the upper and lower beams 2 are set in advance so as to achieve this positional relationship. Note that 13 in the figure indicates a radio control device.

After the lower beam 2 is placed between the joints in this manner, the beam 2 is temporarily assembled between the joints as shown in FIG. After the beam 2 is temporarily assembled, the suspension rope of the beam 2 is removed.

Next, as shown in FIG. 10, the worker goes up to the upper floor joint, and as in the case of assembling the lower beam 2 described above, the clamp mechanism 1a
and the lifting mechanism 1b is operated wirelessly to place the upper beam 2 between the corresponding joints. Then, temporarily assemble the beam 2 and remove the hanging rope.

Thereafter, as shown in FIG. 11, the crane is called again, and the hanging wire 10 of the erection device 1 is hung on the hanging hook 9, and the grip of the clamping mechanism 1a is released from the column head by radio control. In other words, the outer claw 5 is returned outward, and the inner claw 6 is returned inward. Then, the crane is operated to lift up the erection device 1 and remove it from between the column heads. and,
Again, the erection device 1 is used to construct a beam 2 as shown in FIG.
The beam 2 to be assembled next is suspended below the erection device 1.

Thereafter, similar operations are repeated to assemble the beams 2 in sequence.

In this way, according to the erection device 1 of the present invention,
During the operation between the state of FIG. 7 and the state of FIG. 1, the crane is released from its work area. Therefore, during this release time, the crane can perform erecting work on other related beams, columns, etc., thereby making it possible to shorten the construction period.

[Effects of the Invention] As explained above, the steel beam erecting device according to the present invention suspends and holds the beam instead of the crane from the time the beam is lifted together with the crane and placed between the column heads. Since the structure is such that the beam is lifted and lowered, once the beam is suspended and held in place of the crane, the crane can be unrestrained and the crane can perform other tasks.
Therefore, it is possible to increase the operating rate of the crane, shorten the construction period, and reduce costs.
Moreover, since the suspension position of the beam is finely adjusted while keeping the center aligned based on the stable condition of the beam being spanned between the column capitals, the work of inserting the beam into the attachment point of the column capital can be carried out in a stable condition and without danger. It can be done easily.

Furthermore, when the erection equipment itself, which is suspended by a crane and is in an unstable state, is to be bridged between column heads, the abutment roller located at the bottom of the clamp mechanism is pushed against one side of the column head from the side. , the erection device itself is stopped directly above the column capitals, and then the erection device itself is lowered and its clamp mechanism clamps the column heads, so the erection device itself can be easily positioned between the column capitals. The work can be carried out at high places extremely safely.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing how the erection device of the present invention is used, FIG. 2 is an enlarged sectional view of one end of the erection device, and FIG. 3 is a sectional view taken along the - line in FIG. 2. FIG. 4 is a perspective view of the main part of the guide roller section shown in FIG. 3, and FIGS. 5 to 11 are explanatory diagrams of the procedure for assembling a beam using the erection apparatus of the present invention. 1... Erecting device, 1a... Clamp mechanism, 1b
...... Lifting mechanism, 1c... Connection section, 2... Beam, 3
...Pillar, 21...Main body.

Claims (1)

[Claims] 1. It has a main body long enough to span between the capitals of columns on which steel beams are assembled, and clamp mechanisms are provided at both ends of the main body to match and clamp the column capitals from above, and these clamp mechanisms The lower side of the main body is equipped with an abutment roller that comes into contact with one side of the column head to be clamped by these clamp mechanisms, and the upper part of the main body is provided with a connecting part to be connected to the crane. A steel beam erecting device characterized in that it is equipped with a lifting mechanism for suspending a beam and raising and lowering the beam.