JPH07145670A - Cableway carriage system for underground construction work - Google Patents

Abstract

PURPOSE:To materialize a carriage system for underground construction work that can be installed and dismantled even in a limited space and operated easily for loading, unloading and carriage by utilizing a cableway. CONSTITUTION:A pair of main cables 1 are arranged in parallel with each other at a specified interval in the same span, utilizing the upstairs in an underground construction site. On each cable 1, a carriage 2 can travel with a hoist 7 suspended. The two carriages 2 are moved in a pain or independently, and thereby carriage of load and loading and unloading of the load in a limited space can be operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an underground construction for carrying out materials for construction work such as foundation beams, among other underground construction work, or for loading and unloading materials for dismantling and renovation work of the underground part of an existing building. The present invention relates to a transport system for underground work by a cableway that can be used for horizontal transport work of members on a working floor.

[0002]

[Background Art] In the reverse construction method that precedes the construction of the upper floor,
Since the upper part is blocked by the floor, how to efficiently carry the members inserted through the opening horizontally is a major issue in shortening the construction period. Although there are various restrictions on the middle floor, it is possible to use cranes and other transporting and lifting machines, but after construction of the pressure plate, the lines stand up from the pressure plate, so traveling heavy equipment can be used at all. Disappear.

Furthermore, at the stage where the reinforcement of the foundation beams is completed, it is extremely difficult to refill the formwork materials and scaffolding materials in the next step, or to transport the spun concrete as a double slab. At present, in most cases, a small temporary passage is installed to carry the workers. In other words, among the underground works, the work of the root cutting floor, which requires a large amount of material, is the most inefficient.

On the other hand, in a large-scale work place, an overhead traveling crane is installed using the constructed upper floor, but in this case, the cost of equipment such as rails is high, and There are many problems in terms of cost, temporary labor, flexibility, etc., because heavy equipment is required for dismantling and work in high places is involved.

[0005]

As described above, in the conventional transport work using the narrow temporary passage, the smoothness of transport is likely to be impaired, and the work is carried by an operator, which is inefficient and dangerous. In addition, an overhead crane cannot be installed in a limited space, and there is a problem in that installation and dismantling of the overhead crane require labor.

The present invention has been conceived in order to solve these conventional problems, and its purpose is to easily install and dismantle even in a limited space, and to transfer at a low cost. Another object of the present invention is to provide a transportation system for underground work by a cableway with extremely high efficiency, which allows easy loading and unloading operations.

[0007]

The features of the present invention according to the above object are that a pair of main ropes are provided in parallel in the same span at a required interval by utilizing the upper floor of an underground construction site. Each of the carriages is suspended by a lifting device so that it can be moved individually, and the two carriages can be moved as a pair or individually to move and lift the load in a limited space. There are things to do.

[0008]

[Operation] In the above configuration, the cargo that moves the main rope can laterally move the load, and the lifting device suspended in the carriage can lift and lower the load. In addition, it is possible to transfer various loads by properly using the two carages.
It does not obstruct the opening for loading the load from above.

[0009]

EXAMPLES The present invention will be described below with reference to an example of a transportation system for underground construction adopted in the construction work of the skeleton at the root cutting bottom in the reverse construction method.

FIG. 1 shows an example of a device constituting a transportation system by an overhead cableway. In the figure, 1 and 1 are a pair of parallel main ropes on the left and right by wire ropes, and 2 and 2 are individual main ropes 1. A carriage having a normal structure movably mounted on a main body 3, and a pair of sheaves 4, 4 for traveling are supported on the front and rear of the upper portion of the main body 3. A lifting device 7 including a horizontal member 5 and a chain block 6 attached to one side surface of the carriage 2 is suspended by a metal fitting 8 on the carriage 2. There are two lifting chains 9 of the chain block 6, which are separately hung from the front and rear sides of the horizontal member 5, and a hanging hook 10 is provided at the tip.

Reference numeral 11 is a tow line, which is attached to a metal fitting 12 at the lower end of the front and rear of the main body of the carrage 2. Reference numeral 13 denotes an intermediate support fitting between the main rope 1 and the tow rope 11, which has a wire rope receiver 15 for the main rope at a lower end 14 bent upward. The intermediate support fitting 13 suppresses the amount of hanging of the main rope 1 during loading, and the main rope itself can be made thin.

In such an overhead cableway, the load can be laterally moved by pulling the carriage 2 by the towline 11, and the load attached to the end of the lifting chain 9 can be lifted and lowered by the operation chain 16 of the chain block 6. be able to.

Although a chain block is adopted for lifting in this embodiment, a hoist, a chill hole, etc. can also be used, and the electric wire cable 20 for the lifting device is towed as shown by the chain line in FIG. Wiring can be performed using the rope 11.

Next, FIG. 2 will be used to explain the construction of a transportation system and the transportation of members by an aerial cableway at the root of the root. In this figure, construction of pressure board 21 is completed by reverse driving method, and foundation beam reinforcement 22, foundation beam formwork 23, concrete placement, demolding of formwork, etc. are performed in order from the left side of the figure. It shows one process in case of going.

In this state, the pressure board 21 to the streak 24
The heavy equipment cannot be moved because it is protruding. In addition, above the work area, a sill beam 26 that is stretched between the left and right mountain retaining walls 25, 25 is temporarily installed, and the sill beam 26 is supported by the true column 27 via a support metal. There is.

The installation of the above-mentioned transportation system in such a situation starts with the suspension of the main rope 1 and the tug rope 11. As shown in the drawing, the intermediate support fittings 13 are provided on the beam 28 or the floor above the pressure board 21 in pairs within the same span by a chain or the like at predetermined intervals. Further, the main ropes 1 and the anchor saddles 29 and 30 of the tug 11 are provided on both the mountain retaining walls 25 and 25 in parallel, respectively, at a required interval, one pair each in the same span. The main rope 1 and the tow rope 11 are wound around the anchor saddle 30 and are suspended in two right and left rows.

Further, one end (right side in the figure) of each of the pair of main ropes 1, 1 is fixed to an anchor metal fitting 31 fixed to the mountain retaining wall 29, and the other end (left side in the figure) is saddle block 3.
2, via a tensioning device such as a chill hole 33, and fixed to the anchor metal fitting 31, two main ropes 1 are suspended horizontally at all times.

When attaching the carrage 2 to each main rope 1, the main rope 1 is loosened, the sheaves 4 and 4 are hung on the main rope 1, and then the tug 11 is connected to the front and rear of the carriage. In addition, one end of the tug 11 is a winch 34 for the right row fixed to the mountain retaining wall 29, and the other end is a winch 35 for the left row.
The winches enable a variety of lateral movements by pulling a pair of carages 2 and 2 shown in FIG. 1 simultaneously in the same direction, individually in the opposite direction, or by pulling only one side.

When the load receiving stage 36 with legs is transferred by the above-mentioned overhead cableway, as shown in FIG.
Carriage 2 and 2 of the table are used as a pair at the same time. The loading stage 36 is a quadrilateral loading frame 37,
It consists of a handrail 38 and a flip-out leg 39. The flip-out leg portion 39 is for temporarily placing the stage on the constructed foundation beam or the like, and the leg portion is slid or pivoted from the lower surface of the load receiving frame 37 to be manually or hydraulically actuated. It is structured so that you can go in and out.

Further, the handrail 38 around the upper surface of the load receiving frame 37 is detachable, and a part thereof is omitted in the drawing,
A retractable step is provided as a bridge between the load receiving frame 37 and the foundation beam.

The load receiving stage 36 is constructed such that the four lifting chains 9 are provided at the four corners of the load receiving frame 37.
9 can be hooked and suspended on the lifting devices 7 and 7 of the two carrages 2 and 2, and both chain blocks 6 and 6 can be simultaneously operated and lifted, and then both tow lines 1
It is possible to horizontally move along the main ropes 1 and 1 by pulling 1 and 11 in the same direction at the same time and moving the two carriages 2 and 2.

Synchronous pulling of the tow lines 11 and 11 in the same direction is performed by simultaneously operating both winches on the same side.
Any one of the cases where the winch brakes of one of the tugs on the same side are released can be adopted. As a result, the lateral movement and the vertical movement of the load receiving stage 36 in the limited space are smoothly performed, and the floor board 40 of the upper floor shown in FIG.
After the carried-in material suspended from the opening 41 is directly conveyed horizontally to the stage above the cross beam, the space between the cross beams on the grid can be lowered to unload the material at a predetermined place.

Although the number of cargo receiving stages carried by the carriages 2 and 2 is limited to one, it is possible to operate a plurality of cargo receiving stages 36. In this case, other cargo receiving stages are used as temporary materials for carrying in. It can be used as a storage place, a safety passage, a processing place, etc., and also as a suspension scaffolding when constructing foundation beams, and when necessary, it is possible to suspend and move the cargo receiving stage for those applications to the lifting device 7 of the carrages 2, 2. Become.

The transfer using the two carriages 2 and 2 can be carried out without being limited to the load receiving stage 36. FIG. 3B shows a transfer state of the system beam 42 for foundation beams. Further, (C) shows the case of the foundation beam form and the reinforcing bar unit 43.

FIG. 4 shows a state in which two carriages 2 and 2 are individually transferred in the same direction or different directions. In this case, a load is suspended for each carriage. For example, in FIG. 4A, a gondola 44 is hung, and in FIG. 4B, different loads such as a reinforcing bar bundle 45 and a reinforcing bar unit 43 are suspended.

[0026]

As described above, according to the present invention, a pair of main ropes provided in parallel in the same span with a required space therebetween are individually movably mounted with a carriage with a lifting device suspended. The following two effects can be obtained because the two carriages are individually or individually moved to move and lift the cargo in the limited space.

Compared with a transportation system using an overhead traveling crane, the efficiency of load transportation work can be improved at low cost,
In addition, since installation and dismantling are extremely easy, flexibility is high, such as re-operation within the work and free handling of temporary conditions, and high work due to installation and dismantling work when the reverse construction method is used. Does not occur.

Since the pair of main ropes is used as a cableway, the cableway does not obstruct the delivery of the load even if it is installed under the opening, and the load is directly placed on the load receiving stage horizontally attached to the pair of carages. Moreover, since large members and long members can be stably transported, it is possible to carry out industrialization methods such as batch movement of system formwork and laying of spancrete.

[0029] The cargo receiving stage and materials can be vertically lowered in a foundation beam (pit) surrounded by reinforcing bars and formwork materials on all four sides, and bulk goods can be collectively transported by the cargo receiving stage, so the transportation efficiency is improved. improves.

[Brief description of drawings]

1 is a partial perspective view of a transport system for underground work by a cableway according to the present invention.

FIG. 2 is an explanatory diagram of the case where the above-mentioned underground construction transportation system is adopted in an underground construction site by a reverse driving method.

FIG. 3 is a schematic explanatory view of an example of carrying a load by two carages.

FIG. 4 is a schematic explanatory view of an example of carrying a load in which two carages are individually used.

[Explanation of symbols]

 1 Main Line 2 Carrage 6 Chain Block 7 Lifting Device 9 Lifting Chain 11 Towing Line 12 Intermediate Support Metal Fitting 36 Loading Stage

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Claims (1)

[Claims] 1. A pair of main ropes are provided in parallel in the same span at a required interval using the upper floor of an underground construction site, and a carriage with a lifting device suspended on the main ropes is individually moved. A carriage system for underground work by cableway, which is freely mounted and configured so that the two carriages can be moved as a pair or individually to move and lift the load in a limited space. .