JPS6027638B2 - Weight lifting and lowering equipment using connected steel rods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for lifting and lowering heavy objects using connected steel rods.

Traditionally, it has been used to lift heavy objects such as PS concrete girders,
In case of hanging, multiple connecting steel rods of several meters in length are fastened together using joint couplers, heavy objects are suspended from the lower part of these connecting steel rods, and a hydraulic jack etc. is driven. A connecting steel rod is raised and lowered by a source, and the heavy object is lifted or lowered by this.

However, in this type of conventional lifting/hanging device, when a heavy object moves following the elevation and descent of the connecting steel rod, the joint coupler does not move the anchor plate attached to the connecting steel rod. Because it is constructed in such a way that it cannot be passed through, if heavy objects are to be lifted or lowered using this device, the lifting amount can only be lifted or lowered to a length equivalent to one connected steel twill; Lifting or lowering had to be done by relying on other equipment, which had the disadvantage that not only was the efficiency of the lifting and lowering work extremely low, but the cost required for the work was also considerable.

The present invention provides a device for lifting and lowering heavy objects using connected steel rods having a novel structure and having no such drawbacks. Finally, details of the present invention will be explained using embodiments shown in the drawings. Fig. 1 is a simplified configuration diagram showing an embodiment of a device for lifting and lowering a load using connected steel rods according to the present invention, Fig. 2 is an exploded perspective view of an anchor plate, and Fig. 3 is an assembled perspective view of the anchor plate. It is a diagram.

In these figures, what is indicated by numerals 1 and 2 is the loading table 3.
and a pair of type 1 steel la, lb, 2a, 2
The base frame is constructed by arranging the base frames 1 and 2 facing each other at appropriate intervals, and cylindrical guide columns 4 and 5 are fixed to the outer parts of the base frames 1 and 2, and are erected on the outer parts of the base frames 1 and 2. The upper ends of the guide columns 4 and 5 are connected and supported by a support frame 6. Further, reference numeral 7 denotes an elevating member in which coupling parts 7a and 7b provided at both ends are slidably connected to the guide columns 4 and 5, and the center of the lower part of this elevating member 7 is connected to the base frame 1. , 2 is always supported by the upper end of a piston rod 8a of a hydraulic jack 8, and 9 is a connecting steel rod having threads on its surface, and each connecting steel rod 9 has a length of are formed to have a length of several meters, and are fastened together in an appropriate number with joint couplers 10, and each hole (not shown) in the support frame 6 and the elevating part village 7,
In addition, type 1 steel la, lb, 2a, which constitutes the base frames 1 and 2,
2b and hangs downward.

A heavy object (not shown) such as PS concrete is suspended from the lower part. In addition, each hole of the support frame 6 and the elevating member 7, and the type 1 steel la constituting the base frames 1 and 2.
, lb, the spacing between 2a and 2b is the joint coupler 10
and a nut 11 (
11, 112) are constructed to be large enough to pass through. The nut 11 is screwed onto the connecting steel rod 9, and the upper nut 11 is continuously arranged below the joint coupler (not shown) that has passed through the upper anchor plate 122 and the spherical washer 132, and is arranged downward. The lower nut 112 is continuously arranged at the lower part of the joint coupler 10 that has passed through the positions of the lower anchor plate 12 and the spherical washer 13.
This nut is moved downward from the position indicated by the two-dot chain line 11'2 in the figure. Anchor plates 12 are also provided at the upper portions of the base frames 1 and 2 and the elevating member 7, respectively.
(12,, 122) and a spherical washer 13 (13, , 132) arranged below these. This spherical washer 13 has a fixed member 13a and an arbitrary A movable member 1 joined to be able to move in a direction
3b, and has a hole 13c in the center thereof, which is large enough to allow the joint coupler 10 and nut 11 to pass through. In addition, the anchor plate 12 located above the spherical washer 13 is
As shown in FIGS. 2 and 3, it is constructed by combining first to fourth pieces 12a, 12b, 12c, and 12d, which are U-shaped in side view, in a divisible manner. In other words, as shown in FIG. 2, the first piece 12a and the second piece 12b are joined at one side, and the third piece 12c and the fourth piece 12d are joined at one side. By combining them so as to mesh with each other, they are constructed as shown in FIG. 3. In addition, in this embodiment, the anchor plate 12 has a rising portion 12e of the first piece 12a and the second piece 12b.
, 12f, and the third and fourth pieces 12c, 12
It is designed to be approximately equal to the width dimension ratio of the sections combining d. In addition, the first piece 12a and the second piece 12b
A connecting steel rod 9 formed with a diameter smaller than the diameter of the nut 11 is provided at each central portion of the member combining the third piece 12c and the fourth piece 12d. Holes 12g and 12h are provided, and when the anchor plate 12 is made by combining the above-mentioned members, the holes 12g and 12h are constructed to match. Now, to explain the operation of the device of the present invention configured as above, first, when the piston rod 8a of the hydraulic jack 8 rises, the elevating member 7 follows this and moves the guide columns 4, 5
Rise along the top.

Then, the spherical washer 132 placed on this elevating member 7
The spherical washer 132 and the anchor plate 122 are connected to the lifting member 7 via the anchor plate 122.
The nut 11 fixed on the upper part is pushed up, and the connecting steel rod 9 is thereby moved upward by an amount corresponding to the rise of the piston rod 8a, and the weight suspended on the lower part of the connecting steel rod 9 is lifted. Lift something up by the same amount. At this time, the position of the joint coupler 10 formed by fastening and connecting the connecting steel bars 9 to each other is immediately below the anchor plate 12 on the base frames 1 and 2, as shown by the two-dot chain line 10' in FIG. When the anchor plate 12 is
It is divided into pieces 12a, 12b, 12c, and 12d and removed from the connecting steel rod 9, together with a nut 11'2 with a joint coupler 10' continuously arranged below the joint coupler 10'.
After passing through the positions of the spherical washer 13 and the anchor plate 12, the anchor plate 121 is roughly attached to the connecting steel rod 9 again. And the piston rod 8
At the point where a reaches its maximum extension position, the nut 11'2 that has risen together with the joint coupler 10 is designated by reference numeral 112.
Screw the anchor plate downward to the position shown in
2. By bringing the connecting steel rod 9 into contact with the top, the lifting amount is maintained so that the connecting steel rod 9 does not fall. Further, when the piston rod 8a of the hydraulic jack 8 is lowered, the elevating member 7 is also lowered, and the anchor plate 122 and the spherical washer 132 slide down along the connecting steel rod 9, and are located above them. Since the nut 11 remains fixed to the same layer of the connecting steel rod 9, when the piston rod 8a has descended to the most compressed position, the nut 11 is screwed downward and onto the anchor plate 122. to support,
The anchor plate 122 and the spherical washer 132 are again fixed to the elevating member 7 and set to the initial state.

Thereafter, by repeating such operations, the connecting steel rod 9 is gradually raised, thereby lifting a heavy object. On the other hand, when suspending a heavy object, the anchor plate 122 is first placed in the most extended state of the piston rod 8a.
, a spherical washer 132 is fixed to the elevating part village 7 by a nut 11, and at the same time a nut 112 is fixed to the base frame 1, 2 by an anchor plate 12, a spherical washer 13 is fixed to the anchor plate 12, By spirally moving the anchor plate 12 and the spherical washer 13 further upward, the anchor plate 12 and the spherical washer 13 are left in an unsupported state. Followed by anchor plate 122 and spherical washer 13
2 is lowered, and at the same time the nut 11 and the connecting steel rod 9 are also lowered by the same amount of movement, and when the piston rod 8a reaches the maximum compression state, the upper nut 11 is separated upward from the position of the anchor plate 122. The nut 11 is moved again at the most extended position of the piston rod 8a.
is set on the anchor plate 122, and the lower nut 112 is set on the anchor plate 1 on the base frames 1 and 2.
2, move it far upwards and set it to the initial state.

Thereafter, by repeating such operations, the connecting steel rod 9 is lowered step by step, and the objects are suspended.
In addition, even in this case of hanging, if the joint coupler 10 is just above the anchor plate 12 (12, 122),
2 is removed from the connecting steel beam 9, and after passing through the connecting steel beam 9, the work is performed by roughly attaching it again to the connecting steel beam 9. As explained above, according to the device of the present invention, the anchor plates are constructed by combining the anchor plates in a separable manner, are removably attached to the connecting steel rod, and a hole is formed in the spherical washer so that the joint coupler can be inserted therethrough. With this structure, when lifting or lowering a heavy object, if the joint coupler made by connecting the connecting steel rods is likely to pass through the anchor plate, remove the anchor plate from the connecting steel twill in advance and prevent it from passing. All you have to do is reattach it to the connecting steel rod afterward, and there is no need to ask for help from other equipment during the process, unlike in the case of a sluice, and it is now possible to lift and lower heavy objects using only the device of the present invention. , it has the extremely excellent effect of not only significantly improving work efficiency, but also reducing costs associated with it.

[Brief explanation of drawings]

Fig. 1 is a simplified configuration diagram showing an embodiment of a device for lifting and lowering heavy objects using connected steel rods according to the present invention, Fig. 2 is an exploded perspective view of an anchor plate, and Fig. 3 is an assembled perspective view of the anchor plate. It is a diagram. 1, 2... Base frame, 7... Lifting member, 8...
Hydraulic jack, 9...Connected steel rod, 10 (10'
)...Joint coupler, 12 (12,,1
22) ...Anchor plate, 13 (13,,132)
......Spherical washer, 13c...hole. Figure 1 Figure 3 Figure 2

Claims (1)

[Claims] 1 Consisting of a base frame, an elevating member disposed above the base frame and raised and lowered by a drive source, and penetrating and hanging down through the elevating member and the base frame, and each of which is fastened and joined by a joint coupler. a connecting steel rod, a spherical washer disposed on the base frame and the elevating member, and an anchor plate located on the spherical washer, the anchor plate being combined in a separable manner; A device for lifting and lowering heavy objects using a connecting steel rod, characterized in that the connecting steel rod is removably attached to the connecting steel rod, and the spherical washer has a hole bored through it so that a joint coupler can be inserted therethrough. .