JPH0433948B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an adjustment support device for a working lifting body used in constructing or dismantling structures such as silos, chimneys, and bridge piers.

[Prior art]

Conventionally, as one of the construction methods for constructing a tower-like structure, a work elevator with scaffolding and formwork is moved up and down by about 2 to 4 meters using a lifting drive device such as a jack or winch. A jump-form construction method is known in which the process of supporting the structure with a structure and the process of pouring concrete onto the top of the structure and adding additional structures are repeatedly carried out.

As a support device for the work lifting body used in the conventional jump form construction method, the 12th
As shown in the figure and FIG. 13, a locking fitting 12 having a pin hole 11 is fixed to the work lifting body 5, an anchor fitting 14 having a pin hole 13 is embedded and fixed in the concrete structure 3, and the After moving the elevating body 5 upward to match the pin hole 11 of the locking metal fitting 12 with the pin hole 13 of the anchor metal fitting 14, the locking pin 15 is inserted across the pin holes 11 and 13 and fixed. A support device configured as described above is known.

However, in the case of this support device, the locking fitting 12
Since it is necessary to accurately align the pin hole 11 of the anchor fitting 14 with the pin hole 13 of the anchor fitting 14, there is a problem in that the work is complicated and the lifting drive device must have a fine adjustment function.

As a support device that can solve this problem, the 14th
As shown in the figure, an inverted L-shaped locking fitting 16 is fixed to the elevating body 5, and an anchor fitting 14 having a pin hole 13 is embedded and fixed in the concrete structure 3,
After moving the elevating body 5 upward and arranging the engaging fitting 16 above the anchor fitting 14, the fifteenth
As shown in the figure, the pin hole 13 of the anchor fitting 14
The locking pin 15 is fitted into the anchor fitting 14, and then the elevating body 5 is lowered, and the locking metal fitting 16 is fitted into the locking pin 15 fitted into the anchor metal fitting 14, as shown in FIGS. 16 and 17. Support devices configured to rest are also known.

However, in the case of any of the conventional support devices,
Anchor metal fittings 14 embedded and fixed in the structure 3
Since the level of the elevating body 5 is determined to be a fixed position depending on the level of the anchor fitting 14, the installation accuracy of the anchor fitting 14 will greatly restrict the accuracy of the next structure addition work.

Therefore, a device is required that allows fine adjustment of the formwork 17 in the work lifting body 5 consisting of a formwork supporting scaffold shown in FIG. If the height is irregular, the fixing position of the elevating body is restricted, which causes inconvenience in the next construction of the structure. For example, Figures 18 to 20
As shown in the figure, if you set the lift amount L ₁ at one time to 3 m and perform additional construction of the structure, and it becomes necessary to change the lift amount L ₂ to 2 m midway through,
It is necessary to newly drill an anchor insertion hole 19 in the formwork 17 for attaching an anchor fitting for changing the lift amount, and if the lift amount is to be increased to 3 m again, it is necessary to close the anchor insertion hole. If such a process is repeated, the face plate of the formwork will be seriously damaged, resulting in a poor appearance of the constructed structure, and additional anchor fittings will be required, which is uneconomical.

[Purpose and structure of the invention]

The object of the present invention is to provide an adjustment support device for a working lifting body that can advantageously solve the above-mentioned problem. A large number of support fittings 2 each having a pair of support arms 1 are fixed to a structure 3 at intervals in the vertical direction,
A guide rail 4 extending in the vertical direction at a position facing the support fitting 2 is fixed to a work lifting body 5, and a guide roller 6 attached to the tip of each support arm 1 is engaged with the guide rail 4, A bracket 7 that can pass between the pair of support arms 1 is fixed to the guide rail 4, and a support stand 8 placed across the pair of support arms 1 has a bracket 7 fixed to the guide rail 4.
An adjustment support screw 10 consisting of a screw rod 9 and a nut screwed to the end thereof is inserted, and the work lifting body 5 is supported by the adjustment support screw 10 via a bracket and a guide rail 4. The feature is an adjustment support device for a working lifting body.

〔Example〕

Next, the present invention will be explained in detail with reference to illustrated examples.

1 to 8 show an embodiment of the present invention, in which a concrete structure 3 is attached to a scaffolding frame of a scaffolding device 21 having a plurality of scaffolding boards 20 arranged at intervals in the vertical direction. A plurality of guide rails 4 extending in parallel in the vertical direction are arranged and fixed at intervals in the left-right direction at a position facing the front surface of the scaffold frame, and the lower part of the scaffold frame is in contact with the side surface of the structure 3. A supporting roller 22 is attached to the scaffolding frame, and a safety fence 23 is attached to the outside of the upper part of the scaffold frame.

Rails 24 extending in the front-rear direction, that is, in the direction perpendicular to the front surface of the structure 3, are fixed to the left and right sides of the upper part of the scaffold frame, and a plurality of wheels are attached to the left and right sides of a trolley 25 having a locking device for preventing movement. A scaffold 28 is placed on the rail 24, has a formwork frame 26 fixed to the trolley 25, and has a safety fence 27 at the rear of the formwork frame 26.
is fixed, and a formwork face plate 29 is further fixed to the front part of the formwork frame 26 via a number of attachment members, and the scaffolding frame and each part attached thereto are placed on the rail 24. The formwork frame 26 fixed to the trolley 25 and the parts attached to the formwork frame 26 constitute a work elevating body 5 consisting of a formwork supporting scaffold.

A rope support fitting 2 facing the guide rail 4 is arranged at the upper and lower parts of each structural unit 3A that is successively added to and constructed.
is composed of a mounting plate 31 having horizontally elongated holes 30 for adjusting the mounting position on both left and right sides, and a pair of support arms 1 fixed to the mounting plate 31 at intervals in the left-right direction. 30 is an anchor bolt 32 buried in the structural unit 3A.
is inserted through the anchor bolt 32, and the support fitting 2 is fixed to the structure 3 by a nut 33 screwed onto the anchor bolt 32.

A guide roller 6 that engages with the rear surface of the front flange of the guide rail 4 is attached to the distal ends of the pair of left and right support arms 1 of the support fitting 2 by a horizontal shaft, and A pair of steel brackets 7 are fixed to the lower part and spaced apart from each other in the left and right direction, and the brackets 7 can move vertically between the pair of left and right support arms 1.

A steel support stand 8 is placed across the upper part of the base end side of the pair of left and right support arms 1, and a vertical steel screw rod 9 inserted through the center of the support stand 8 is mounted on the upper part of the support stand 8. The upper nut 34 to be placed is screwed together,
Furthermore, a washer 36 is fitted into the lower part of the screw rod 9, and a lower nut 35 is screwed into the washer 3.
6 is engaged with the lower surfaces of a pair of left and right brackets 7.

The screw rod 9 and the upper nut 34 screwed thereto
and lower nut 35 to adjust the support screw 10.
is constructed, and the work lifting body 5 has an adjustment support screw rod 10.
The elevating body 5 is supported in a level-adjustable manner by
The own weight of the bracket 7 fixed to the guide rail 4, the washer 36, the lower nut 35, the screw rod 9, the upper nut 34, the support base 8, the support fitting 2, and the anchor bolt 32 are applied to the structure in this order. is transmitted to.

Next, the sequence of raising and fixing the elevating body 5 will be explained with reference to FIGS. 6 to 8.

First, from the state shown in FIG. 6 to the state shown in FIG. (omitted)), then the screw rod 9 with the lower nut 35 screwed into it and the washer 36 fitted is inserted from below between each bracket 7 and each support arm 1, and is inserted into the upper part of the screw rod 9. The fitted support stand 8 is placed across each support arm 1. Next, as shown in FIG. 8, the upper nut 34 is screwed onto the upper part of the screw rod 9, and the upper nut 34 is lightly tightened with a tool or by hand.

Next, when the elevating drive device is operated in the direction of lowering the elevating object 5, the weight of the elevating object 5 and the load acting on it are transferred to the bracket 7, washer 36, lower nut 35, screw rod 9, upper nut 34, and support base. 8, the support metal fittings 2 and the anchor bolts 32 are transmitted to the structure 3 in this order, and the load on the lifting drive device is completely removed.

Incidentally, after the upper nut 34 is screwed onto the upper part of the screw rod 9, the screw rod 9 may be inserted from above. Furthermore, even if the stopping position of the elevating body 5 is lower than the position shown in FIG. 8, if a long screw rod 9 is used as shown in FIG. 9, the fixing operation can be performed in the same way as the above-mentioned fixing procedure. be able to.

FIG. 10 and FIG. 11 show another example of an elevating body level adjustment device using the adjustment support device shown in FIGS. A spare bracket 7A is fixed in the middle of the brackets 7, but the other structure is the same as that shown in FIG.

In the case of Figures 10 and 11, the structural unit 3 is rebuilt without using long screw rods.
It is possible to easily respond to changes in the length of A in the vertical direction, that is, changes in the lift amount of the elevating body.

As in the above embodiment, if the horizontally elongated hole 30 is provided in the mounting plate 31 of the support metal fitting 2, the support metal fitting 2
Lateral errors in the position of can be easily corrected.

If the horizontally elongated holes 30 are provided on both the left and right sides of the mounting plate 31 as in the above embodiment, even if the position of the anchor bolt 32 to which the support fitting 2 is attached is slightly deviated laterally between the upper and lower stages, Since the support fittings 2 can be moved laterally to correct their lateral positions and then tightened and fixed with the nuts 33, the support fittings 2 arranged at intervals in the vertical direction can be fixed so that they are aligned accurately on a straight line. I can do it. Further, if the guide rail 4 is also used as a member constituting a part of the working lifting body 5, the adjustment support device for the working lifting body can be manufactured economically.

When carrying out this invention, the adjusting support screw rod 10 may have a head at one end and a nut screwed onto the other end, or the screw rod may be inserted without using a pair of left and right brackets. The washer 36 may be omitted by using a bracket with a common longitudinal hole.

The present invention can be applied not only to the construction of tower-like structures, but also to adjustment and support devices for elevating gondolas used for repairing and demolishing tower-like structures, and for cleaning windows of buildings.

〔Effect of the invention〕

According to this invention, a large number of support fittings 2 each including a pair of support arms 1 arranged at intervals in the left-right direction are fixed to a structure 3 at intervals in the vertical direction, and the support fittings 2 A guide rail 4 extending in the vertical direction at a position opposite to is fixed to the work lifting body 5, and a guide roller 6 attached to the tip of each support arm 1 is engaged with the guide rail 4. The elevating body 5 can be moved up and down in a predetermined direction by being guided by the guide rails 4 and guide rollers 6. An adjustment support screw 10 consisting of a screw 9 and a nut screwed to the end thereof is disposed across the fixed bracket 7,
Since the lifting body 5 is supported by the support base 8 via the adjusting support screw 10, the bracket 7 and the guide rail 4, the level of the lifting body 5 can be easily and finely adjusted by adjusting the position of the nut on the screw rod 9. When the elevating body 5 is to be moved up and down, the bracket 7 fixed to the guide rail 4 is moved between the pair of left and right support arms 1 by removing the adjustment support screw 10 and the support base 8. can pass through freely, and the elevating body 5 can be moved up and down without any hindrance. In addition, when fixing the guide rail to the structure and the support metal fittings to the work lifting body, it is necessary to install the guide rail over the entire length of the lifting height, which requires a large number of guide rails, which is uneconomical. Moreover, since the weight of the guide rail is large, it cannot be moved by hand, so a transportation machine such as a crane is required, and the work of installing and removing the guide rail is complicated and dangerous. However, in the case of this invention, the guide rail 4 is fixed to the work lifting body 5, and the support fitting 2
are fixed to the structure 3 at intervals in the vertical direction, so that a short guide rail 4 can be used and the lightweight support fittings 2 can be attached to the structure 3 at intervals in the vertical direction. Therefore, it is economical, and furthermore, since the support fitting 2 is significantly lighter than the guide rail 4, it is easy to transport and handle, and it is possible to easily perform installation and removal operations.

[Brief explanation of drawings]

1 to 8 show an embodiment of the present invention, in which FIG. 1 is a partially longitudinal side view of the adjustment support device, FIG. 2 is a partially sectional plan view thereof, and FIG. 3 is a partially sectional side view of the adjustment support device. A sectional view taken along line A-A in Figure 1, and Figure 4 is B in Figure 1.
-B sectional view; FIG. 5 is a vertical sectional side view showing the state of use of the formwork support scaffolding having the adjustment support device; FIGS. 6 to 8 are partial longitudinal side views showing the order of adjustment and support of the adjustment support device. It is a diagram. Figure 9 is a partial longitudinal side view of the adjustment support device using long screw rods, the first
0 and 11 are longitudinal sectional side views showing another formwork supporting scaffold having the adjustment support device of the above embodiment in use. 12 and 13 are longitudinal sectional side views showing an example of a conventional lifting body support device, and FIG.
16 to 16 are vertical cross-sectional side views showing the support order of other conventional lifting body support devices, FIG. 17 is a cross-sectional plan view of the supporting state shown in FIG. 16, and FIGS. 18 to 20 are conventional support devices. FIG. 3 is a longitudinal side view showing the sequence of raising and relocating the formwork support scaffolding with the device. In the figure, 1 is a support arm, 2 is a support metal fitting,
3 is a structure, 4 is a guide rail, 5 is a work lifting body, 6 is a guide roller, 7 is a bracket, 8 is a support stand, 9 is a screw rod, 10 is an adjustment support screw, 21 is a scaffolding device, 24 is a rail, 25 is a trolley, 26 is a formwork frame, 29 is a formwork face plate, 30 is an oblong hole for adjusting the mounting position, 32 is an anchor bolt, 33 is a nut, 34 is an upper nut, 35 is a lower nut, 36
is a washer.

Claims (1)

[Claims] 1. A large number of support fittings 2 each having a pair of support arms 1 arranged at intervals in the left-right direction are fixed to a structure 3 at intervals in the vertical direction,
A guide rail 4 extending in the vertical direction at a position facing the support fitting 2 is fixed to a work lifting body 5, and a guide roller 6 attached to the tip of each support arm 1 is engaged with the guide rail 4, A bracket 7 that can pass between the pair of support arms 1 is fixed to the guide rail 4, and a support stand 8 placed across the pair of support arms 1 has a bracket 7 fixed to the guide rail 4.
An adjustment support screw 10 consisting of a screw rod 9 and a nut screwed to the end thereof is inserted, and the work lifting body 5 is supported by the adjustment support screw 10 via a bracket and a guide rail 4. Features: Adjustment support device for work lifting bodies.