Bottom groove type（Mine hoist conveyance ）is a special conveyance connected with the terminal of hoisting wire rope to hoist personnel, materials, equipment, and materials in the mine. It can be classified into vertical shaft hoist conveyance and inclined shaft hoist conveyance. Vertical shaft hoist conveyance used in mine production includes skip and cage while that applied in shaft sinking is sinking bucket. Inclined shaft hoist conveyance includes inclined shaft skip, inclined shaft manrider, and inclined shaft (slope) trolley. Mine car is used as the hoist conveyance in inclined shaft train hoisting.
Mine hoist conveyance is a special conveyance connected with the terminal of hoisting wire rope to hoist personnel, materials, equipment, and materials in the mine. It can be classified into vertical shaft hoist conveyance and inclined shaft hoist conveyance. Vertical shaft hoist conveyance used in mine production includes skip and cage while that applied in shaft sinking is sinking bucket. Inclined shaft hoist conveyance includes inclined shaft skip, inclined shaft manrider, and inclined shaft (slope) trolley. Mine car is used as the hoist conveyance in inclined shaft train hoisting.
| Bottom groove type Technical Parameters | |||||||
| model | Volume（m³） | Outside diameter of barrel | Barrel mouth diameter | Barrel height | Bucket full height | Discharge port | weight |
| TD-1.2 | 1.2 | φ1450 | φ1320 | 1485 | 2757 | 400×400 | 815 |
| TD-1.6 | 1.6 | φ1450 | φ1320 | 1730 | 3004 | 400×400 | 882 |
| TD-2.0 | 2 | φ1650 | φ1450 | 1940 | 3200 | 400×500 | 1066 |
| TD-2.4 | 2.4 | φ1650 | φ1450 | 1965 | 3340 | 470×470 | 1250 |
| TD-3 | 3 | φ1850 | φ1698 | 2065 | 3600 | 470×470 | 1280 |
| TD-4 | 4 | φ2000 | φ1873 | 2280 | 4025 | 470×470 | 1800 |
| TD-5 | 5 | φ2150 | φ2000 | 2400 | 4400 | 470×470 | 2100 |
