JPH11147691A - Device and method for supporting and attaching heavy article for high place work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe and highly work efficient device capable of providing high workability when used for bridge falling preventing work and eliminating dangers. SOLUTION: This heavy article supporting and attaching device is provided with a rotary machine base 4 fixed to a crane arm tip part so as to be turned up and down, a U-shaped backrest member 9 erected in a turntable on the machine base 4, a base 13 for fixing a bridge falling preventing stopper put over the head part of the backrest member 9 and an inspection road supporting base 31 freely attached to/detached from both side faces of the backrest member 9, the bridge falling preventing stopper is carried to a specified position, the stopper is attached to the anchor bar of a bridge girder floor panel by the operations of the rotary machine base 4 and the turntable 8, then the stopper fixing base 13 is removed to hold a bridge falling preventing block with the backrest member 9, the block is inserted and fixed in the anchor bar so as to support the stopper, the inspection road fixing base 31 is then fixed to the backrest member 9 and attached to a bridge leg upper part lower than the block by supporting the inspection road, and these attaching operations are executed continuously or individually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to work at heights used when mounting heavy works such as steel plate stoppers, blocks, or inspection roads on bridge decks and high places above piers. The present invention relates to a heavy-weight support mounting device and a heavy-weight mounting method.

[0002]

2. Description of the Related Art Conventionally, a steel plate fall prevention stopper is attached to a slab of a bridge at a high place, and a steel plate block and an inspection path for preventing a bridge from being dropped on an upper part of a pier are conventionally constructed. It was necessary to build a scaffold that could withstand heavy work at the site, and in the case of cast-in-place, it was necessary to form a concrete form and cast concrete.

[0003] Also, when using the above-mentioned products such as stoppers and blocks, it is necessary to carry the products on narrow scaffolds, and the work must be carried out using mounting jigs, rollers, and trucks. The work was extremely poor, and it was dangerous work because it was a work at a high place, and the construction work was expensive and the work was very difficult.

[0004]

SUMMARY OF THE INVENTION The present invention solves the problems of the prior art such as the poor workability as described above, and provides a safe and highly efficient work bridge with good workability without danger. The present invention proposes a heavy work support mounting device for work at height used for installation work of a prevention device.

[0005]

That is, according to the present invention, there is provided a side face L pivotally supported at the tip of a crane arm so as to be pivotable in the vertical direction.
-Type rotating machine base, a backrest member with a U-shaped cross-section with an open front face standing on a turntable installed on the machine base, and can be detachably mounted on the head of the backrest member and fixed. A base for fixing a fall prevention stopper and an inspection path support base that can be detachably fixed to the left and right sides of the backrest member, and the fall prevention stopper is supported at the tip of the stopper fixing base by a fixing bracket. , Transported to a predetermined position by crane operation, insert the stopper into the predetermined anchor of the bridge girder slab by the operation of the rotating machine base and the turntable, and then remove the stopper fixing base to remove the bridge Hold the block between the back members,
The block is inserted into a predetermined anchor bar so that the stopper can be supported, and then attached. Then, an inspection path fixing base is attached to the backrest member, and the inspection path is supported and attached to the upper part of the pier below the block. The present invention relates to an apparatus and a method for mounting and supporting a heavy object for working at height, wherein these mounting works are performed continuously at the same construction site or each work is performed separately.

The apparatus and method for supporting and mounting a heavy object for working at height according to the present invention are constructed as described above, and a heavy object such as a stopper, a block or an inspection path for preventing a bridge from being dropped to a predetermined height by a crane operation. Since it can be easily transported and mounted, a conventional scaffold is not required, and particularly when an off-the-shelf product is used, danger is reduced, work efficiency is improved, and construction can be performed at low cost. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a main part of a heavy object support and mounting device for working at height according to the present invention, FIG. 2 is a perspective view showing an example of a stopper for preventing a bridge from falling, and FIG. It is a perspective view which shows an example of a block for falling bridge prevention which is combined vertically.

In FIG. 1, reference numeral 1 denotes a crane arm which is mounted on a crane truck 30 and is capable of changing its direction. The crane arm 1 has a distal end portion 2 on which a chain block or hydraulic pressure which can be operated by an operator on a rotating machine base 4 to be described later. A cylinder 3 is provided. The present embodiment is an example of a chain block. A hook 12 is provided at the tip of the chain block 3, and the hook 12 is fixed to an upper edge of a side frame 5 of the rotating machine base 4 described later.

The rotating machine base 4 is formed in an L-shaped cross section by the side frame 5 and the bottom frame 6, and the rear end of the bottom frame 6 is supported by a turning shaft 7 provided at the tip 2 of the crane arm. The machine base 4 can be turned up and down around the turning shaft 7 by operating the chain block 3 and can be adjusted so as to hold the bottom frame 6 of the rotating machine base 4 horizontally.

Reference numeral 8 denotes a turntable supported on a bottom frame 6 of the rotating machine base 4. A backrest member 9 for fixing a falling bridge prevention upper block 21 having a U-shaped cross section and an open front surface is provided on the turntable 8. And the backrest member 9
A plurality of pin holes 10 for detachably mounting a stopper fixing base 13 to be described later is provided at the upper part of the left and right side walls, and a bracket 11 for fixing a falling bridge prevention block is provided below the pin holes 10. Are attached to the outside of both side walls of the member 9.

Reference numeral 13 denotes a stopper fixing base having a U-shaped cross section with an open lower surface, and a plurality of pin holes 40 having the same diameter as the above-mentioned pin hole 10 are opened on both right and left sides thereof toward the rear end. The base 13 has its rear end covered on the top of the backrest member 9, the pin hole 40 of the base 13 and the pin hole 10 of the backrest member 9 are aligned with each other, the pin 16 is inserted therethrough, and fixed with the stop pin 17. I do.

At the tip of the stopper fixing base 13, a stopper fixing bracket 15 is attached, and further, a notch 14 for holding a part of the stopper 18 is provided. The stopper fixing base 13 is a steel plate stopper 1
8 is used when it is attached to the lower surface of the floor slab 26, and is not used when the fall prevention block 21 or the inspection path 29 is attached to the pier 27.

In the apparatus according to the present invention, first, a base 13 for fixing the stopper is mounted on the head of the backrest member 9 and the base 13 is fixed.
Hold the steel plate stopper 18 at the tip of the
And the turntable 8 adjusts the horizontal and vertical directions and moves the bridge girder to a predetermined position below the floor slab 26 by a crane operation, and moves the stopper 18 to a predetermined anchor streak whose distal end projects downward from the floor slab 26. 28 (see FIGS. 4 and 5).

Next, the stopper fixing base 13 is removed, and the backrest member 9 is attached to the bridge preventing block 21.
Of the base 13, and fixed and supported by the block fixing brackets 11 on the left and right side walls of the base 13 and the wire rope 42, and a predetermined anchor bar protruding from the side wall above the pier 27 in the same manner as the stopper 18. Attach to 43.

A steel plate stopper 18 for preventing a bridge from falling is shown in FIG.
As shown in the figure, a plurality of ribs 19 are attached vertically and horizontally on the inner side, and the outer peripheral part is formed by a steel plate in a side surface substantially L-shaped.
The upper surface is provided with a plurality of stopper fixing holes 20 to be inserted and attached to an anchor bar 28 protruding from the floor slab 26.

As shown in FIG. 3, the drop prevention block 21 is provided with a stopper fixing portion 22 for horizontally supporting the stopper 18 and an anchor bar 43 protruding from the pier 27 in contact with the side wall of the pier 27. A fixing portion 23 having a plurality of holes 24 and a block reinforcing portion 25 sandwiched by the backrest member 9.

FIG. 4 is an explanatory view showing a state in which a stopper 18 for preventing a bridge from being dropped on the lower surface of the floor slab 26 is attached to an anchor bar 28 projecting from the lower surface of the floor slab 26 near the pier 27 by the present apparatus. A rotary machine base 4 pivotally supported in a vertically rotatable manner, and a turntable 8 on the machine base 4
Via the backrest member 9 installed above and the stopper fixing base 13, the stopper 18 for preventing bridge fall held at the tip of the base 13 is transported to a predetermined position on the lower surface of the floor slab 26 by operating the crane arm 1, An anchor bar 28 is inserted into the hole 20 provided on the upper surface of the stopper 18 and attached, and is fixed to the lower surface of the floor slab 26.

FIG. 5 shows that the stopper fixing base 13 is detached from the backrest member 9, the bridge 9 is supported by the member 9, and the anchor bar 43 projecting from the upper side wall of the pier 27 is attached to the front surface of the block 21. The block 21 is inserted into the hole 24 to be opened and attached to the upper part of the pier 27 by bolting. The block 21 is held by the backrest member 9 with the block reinforcing portion 25 of the block 21 held by the wire rope 42. By adjusting the position and direction by operating the rotating machine base 4 and the turntable 8, it is mounted at a predetermined position above the pier 27, and fitted to the lower surface of the stopper 18 previously mounted on the lower surface of the floor slab 26, Is fixed.

FIG. 6 shows a means for holding the inspection path 29 by the machine base 4 when the inspection path 29 as shown in FIG. 7 is mounted above the pier 27. After the stopper 18 and the block 21 holding the stopper 18 are attached to the floor slab 26 or the upper end of the bridge pier 27, this is used when performing the construction inspection and the periodic inspection of the bridge girder. Reference numeral 32 denotes a tread that constitutes the inspection path 29. The tread 32 has a width and a length by which an operator can walk. Is installed.

In FIG. 6, reference numeral 31 denotes a support base for transporting and supporting the inspection path 29 to its mounting position. The base 31 has an L-shaped side surface, and a rear end rising portion 31a is attached to the rotating machine base 4.
9 of the backrest member erected on the upper turntable 8
A flat H-shaped or fork-shaped horizontal support portion 31 which is bolted 44 to the left and right side surfaces via the pin holes 10 and protrudes forward.
The inspection path 29 is supported and fixed on the bridge b, and the inspection path 29 is attached to an anchor bar (not shown) on the wall of the pier 27 slightly below the mounting position of the bridge 21 for preventing a fall by operating the clay arm 1.

[0021]

The apparatus according to the present invention is constructed as described above, and can easily transport a heavy object such as a stopper, a block, or an inspection path for preventing a bridge from dropping to a predetermined position of a bridge girder at a high place by operating a crane. Since it can be installed, it is not necessary to assemble the conventional scaffolding, it is possible to use a precast bridge prevention member, there is little danger, work efficiency is good, and construction of bridge prevention work is relatively low cost You can do it.

The device according to the present invention can of course be applied not only to work to prevent a bridge from falling, but also to work at heights using other heavy objects.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a device of the present invention.

FIG. 2 is a perspective view showing an example of a bridge prevention stopper.

FIG. 3 is a perspective view showing an example of a bridge prevention block.

FIG. 4 is an explanatory view showing a state in which a stopper for preventing a bridge from being dropped is installed on the lower surface of a floor slab of a bridge girder.

FIG. 5 is an explanatory view showing a state in which a fall prevention block is attached to an upper side surface of a pier.

FIG. 6 is an explanatory view showing a state in which an inspection path is supported by an inspection path fixing base attached to a backrest member and moved to a predetermined position.

FIG. 7 is a perspective view showing an example of an inspection path.

FIG. 8 is an explanatory overall side view showing a state in which a stopper for preventing a bridge from being dropped is mounted at a predetermined position on a bridge girder by a crane vehicle equipped with the device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1-Crane arm 2-Crane arm tip part 3-Chain block 4-Rotating machine stand 5-Side frame 6-Bottom frame 7-Rotating axis 8-Turn table 9-Back member 10-Pin hole 11-Block fixing bracket 12 -Hook 13-Stopper fixing base 14-Notch 15-Stopper fixing bracket 16-Pin 17-Stop pin 18-Dropping prevention stopper 19-Rib 20-Stopper fixing hole 21-Dropping prevention block 22-Stopper fixing Part 23-Fixing part 24-Hole for fixing bridge for preventing falling-off 25-Block reinforcing part 26-Floor slab of bridge girder 27-Pier 28-Anchor bar 29-Inspection path 30-Crane truck 31-Inspection path support base 32-Tread plate 33 -Handrail 40-Pin hole 41-Shock absorber 42-Wire rope 43-Anchor bar 44-Bolt

 ──────────────────────────────────────────────────続 き Continuing on the front page (71) Applicant 597178102 Muro Tadashi One room construction machine service at 581 Torisaka, Shimizu City, Shizuoka Prefecture (72) Inventor Masahiro Ono 3-8-15 Kaigan, Minato-ku, Tokyo Country Sohibaura Building National Land General Construction Co., Ltd.

Claims (2)

[Claims] 1. A rotating machine base having an L-shaped side surface rotatably supported in a vertical direction at a tip end of a crane arm, and a cross-section with an open front face standing on a turntable installed on the machine base. A U-shaped backrest member, a base for fixing a bridge-prevention stopper that can be detachably mounted on and fixed to the head of the backrest member, and an inspection path that can be detachably fixed to both left and right sides of the backrest member. A support base is provided, a stopper for preventing a bridge from falling is provided at a predetermined location on the deck of the bridge girder, a block for preventing a bridge from being supported by the backrest member is provided at a predetermined location above the pier, and the inspection path is connected to the pier below the block. An apparatus for supporting and supporting a heavy object at a high place, the apparatus being configured to be able to be transported and mounted to a predetermined upper portion. 2. A fall prevention stopper is supported on a tip of a stopper fixing base by a fixing bracket, conveyed to a predetermined position by a crane operation, and the stopper is moved to a predetermined position of a bridge girder slab by operating the rotating machine base and a turntable. Insert it into the anchor muscle and attach it, then remove the stopper fixing base and sandwich the bridge prevention block between the back members,
The block is inserted into a predetermined anchor bar so that the stopper can be supported, and then attached. Then, an inspection path fixing base is attached to the backrest member, and the inspection path is supported and attached to the upper part of the pier below the block. And a method of mounting and supporting a heavy object for work at height, in which the installation work is performed continuously at the same construction site or each work is separately performed.