Mine tub

Japanese: 鉱車 - こうしゃ(英語表記)mine tub
Mine tub

A vehicle used to transport ores, rocks, etc. in mines. Those used to transport coal are also called coal cars. There used to be wooden cars, but nowadays most are made of steel.

There are two types of steel cars: round-bottomed and square-bottomed, with standard capacities of 1.0-2.5 cubic meters for round-bottomed cars and 0.6-1.0 cubic meters for square-bottomed cars, but as the volume of transportation inside the mine has increased, large ore cars with a capacity of 2-5 tons are also being used. The wheels and axles of the cars use ball or roller bearings, and the couplers are manual, consisting of links, double chains with shackles, and connecting pins.

Several or even a dozen or so mine cars are coupled together and transported by a locomotive or winch, so various safety devices have been devised to prevent accidents caused by the couplers coming loose. Mine cars are loaded by manual shoveling or automatically by conveyors or hoppers, while loading and unloading is done by tiplers or by Granby or dump trucks that open the bottom or sides of the mine cars. Mine cars consisting of only a frame and wheels are called bogies, and are used to transport special objects such as machinery and timber. Vehicles equipped with chair seats and designed exclusively for transporting personnel are called mancars, and are available for use in horizontal tunnels and inclined tunnels, and are operated at scheduled times.

[Nobuo Fusamura]

[Reference] | Underground transportation | Trolley

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

鉱山などにおいて鉱石、岩石などの運搬に使用する車両。石炭の運搬に使用するものは炭車ともよばれる。かつては木製のものもあったが、最近ではほとんど鋼製車が用いられている。

 鋼製車には丸底鉱車と角底鉱車の別があり、標準容量は丸底1.0~2.5立方メートル、角底0.6~1.0立方メートルであるが、坑内運搬の大量化に伴って2~5トン積みの大型鉱車も使われている。鉱車の車輪、車軸は、玉軸受入れまたはころ軸受入れを用い、連結器はリンク、シャックル付き2連チェーンおよび連結ピンからなる手動式である。

 鉱車は数台ないし十数台を連結して機関車または巻上げ機で運搬するので、連結器が外れて事故を起こさないよう、種々の安全装置が考案されている。鉱車への積み込みは人力によるショベリング、コンベヤーまたはホッパーなどによる自動積み込みにより、積み卸しはチップラーによる覆車のほか、鉱車の底面または側面を開くグランビー形またはダンプ形による。台枠と車輪のみからなる鉱車を台車といい、機械、坑木類など特殊物の運搬に用いられる。また、椅子(いす)席を備えた人員輸送専用の車両を人車といい、水平坑道用と斜坑用とがあり、定時運転される。

[房村信雄]

[参照項目] | 坑内運搬 | トロッコ

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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