JP3020796U - Construction gondola - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a construction gondola that does not pose a danger to workers, is extremely easy to install and withdraw, and can be quickly constructed. SOLUTION: This is a garrison which is locked in an opening 2 of a lining plate 1 which covers an underground space, and a locking bar 3 which is horizontally provided so as to bridge the rim of the opening 2, and this locking. The bar cage 4 is attached so as to be hung from the inside of the bar 3, and the bar cage 4 has a protruding portion 5 protruding in the horizontal direction.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a construction gondola, and more particularly to a construction gondola adapted for underground construction.

[0002]

[Prior art]

 Conventionally, when constructing an underground structure in the lower part of a road like a subway, it is necessary to install a lining plate as a temporary road surface in the part corresponding to the ground.

This lining plate constructs beams and girders in a space cut underground, and is laid on it. The height from the bottom of this space to the lining varies depending on the construction work, but is usually about 7 meters.

By the way, a heavy load such as a construction machine or a general vehicle is placed on the lining plate, so that great care must be taken to secure its strength. For this reason, reinforcement girders called stiffeners may be attached to the lining girder.

Since this reinforcing girder is provided for the girder just below the lining plate, the height from the bottom of the space to this girder is close to 7 meters. At the time of this construction, scaffolding boards were passed over the beams, or scaffolds with a height from the bottom to the lining girder were assembled, and workers were to attach the tops of the scaffolds.

[0006]

[Problems to be solved by the device]

 However, in the above-mentioned conventional method, the worker works at a height of about 7 meters, which is extremely dangerous in case of emergency. Moreover, it is necessary to move the scaffold as the work progresses, but it takes time to install and remove such a large-scale scaffold, and it is more efficient to perform it in parallel with the above-mentioned reinforcement work. There is a problem of significantly lowering it.

The present invention has been made in view of the above matters, and it is an object of the present invention to provide a construction gondola that does not pose a danger to workers, is extremely easy to install and withdraw, and can be installed quickly. Subject.

[0008]

[Means for Solving the Problems]

 The present invention has the following configuration in order to solve the above technical problems. That is, a bar cage that locks in the opening 2 of the lining plate 1 that covers the underground space and is horizontally provided so as to bridge the rim of the opening 2, and the locking bar 3 It is composed of a squirrel cage 4 attached so as to hang from the inside of the squirrel, and this squirrel cage 4 has a protruding portion 5 protruding in the horizontal direction. [Lining plate 1] The lining plate 1 is made of an iron plate and is arranged on the lining girders. [Opening 2] The opening 2 is formed by removing a part of the lining plate 1. [Locking Bar 3] The locking bar 3 is preferably, for example, a C channel or an L angle, and is projected from both sides of the basket 4 by about 25 cm, for example. [Circle cage 4] The cage 4 is preferably an angled frame provided with a wire net, but punching metal may be used instead of the wire net. [Overhanging part 5] The overhanging part 5 may be integrated with the cross basket part 4 or may be a separate body. This overhanging portion is located directly below the lining girder that supports the lining plate 1 when the bar cage 4 is locked at a predetermined position in the opening 2.

Although the present invention comprises the above-mentioned essential components, it can also be realized by adding a crane or a power shovel for suspending the gondola having the above-mentioned configuration.

Locking bars 3 are projected on both sides of the cross basket 4, and when the cross basket 4 is lowered into the opening 2, the lock bars 3 are locked to the rim of the opening 2. At this time, the projecting portion 5 is positioned so as to go around the back side of the lining plate 1 that covers the underground space.

Therefore, when an operator rides on the cross basket portion 4, various operations can be performed on the back side of the lining plate 1.

[0012]

[Embodiment of device]

 An embodiment of the present invention will be described with reference to FIGS. This embodiment is an apparatus for reinforcing a lining girder 6 that supports a lining plate 1 that covers an underground space. The lining girder 6 is H steel, and a stiffener is used for reinforcement. The lining plate 1 is a rectangular plate and can be removed at any place, and the opening 2 is formed after the removal.

Then, the cross basket 4 is lowered into the opening 2 by the crane 7. The skeleton 4 has a skeleton composed of 75 mm L-angles 4a. In this skeleton, the upper ends of four vertical L angles 4a are connected by horizontal L angles 4a, and the lower ends of the vertical L angles 4a and the horizontal and vertical L angles 4b are welded in the middle. The L angle 4b has a length of 150 cm, which is larger than the width of 100 cm of the vertical L angle 4a. In addition, the total height of the iron cage 4 is 175 cm.

A wire mesh 4c is stretched over the portion sandwiched by the L angles 4b. A strong corrugated sheet or punching metal is stretched on the bottom. A locking bar 3 is provided in the horizontal direction on the top of the cross basket 4. The locking bar 3 is a C channel having a total length of 140 cm, and both ends of the locking bar 3 project from the cage 4 by 25 cm. It should be noted that 50 mm L-angle 3a is provided at the lower edges of both ends of the locking bar 3.

The locking bar 3 is locked so as to bridge the edge of the opening 2. When using the gondola having the above-described structure, the crane 7 lowers it to the opening 2 (FIG. 2). Since the locking bars 3 project on both sides of the cross cage 4, the locking bars 3 are locked to the rim of the opening 2 to fix the gondola (FIG. 3). At this time, since the projecting portion 5 is positioned so as to go around the back side of the lining plate 1, it is located just below the lining girder 6. For this reason, various work such as reinforcement work for the lining girder 6 is facilitated.

Further, since the opening 2 can be formed at an arbitrary position simply by peeling off the lining plate 1, it is extremely easy to move the gondola. Therefore, the conventional large-scale scaffolding work is not required, and the work can be performed efficiently.

Further, since the worker can work in the gondola, there is no risk of a fall accident, which is extremely safe. In this way, it is particularly suitable for performing various operations near the back surface of the lining plate 1.

[0018]

[Effect of device]

 According to the present invention, since the work on the back side of the lining plate can be performed in the gondola, there is no danger to the operator, and installation and removal are extremely easy and quick work is possible.

[Brief description of drawings]

FIG. 1 is a side view of a gondola showing an embodiment of the present invention.

FIG. 2 is a front view of a gondola showing an embodiment of the present invention.

FIG. 3 is a plan view of a gondola showing an embodiment of the present invention.

FIG. 4 is a perspective view showing an actual use state of the embodiment of the present invention.

[Explanation of symbols]

 1 ... Lining plate, 2 ... Opening part, 3 ... Locking bar, 4 ... Cross-section, 5 ... Overhang part

Claims (1)

[Scope of utility model registration request] Claims: 1. A bar cage for locking an opening of a lining plate covering an underground space, the locking bar being horizontally provided so as to bridge the edge of the opening, and the locking bar of the locking bar. A construction gondola characterized by comprising a squirrel cage attached so as to hang down from the inside, and the squirrel cage has an overhanging portion protruding in the horizontal direction.