Abstract: An article transport facility is provided with a first control device that controls an article transport vehicle in a first area in which articles are transported, and a second control device that controls the article transport vehicle in a second area in which adjustment of the article transport vehicle is performed. Based on a withdrawal instruction from the first control device, an operation control portion of an article transport vehicle that needs adjustment causes the article transport vehicle to enter the second area, and a communication control portion that can perform exclusive wireless communication with the first control device and the second control device changes the communication destination to the second control device.

Abstract: An article transport facility is provided with a first control device that controls an article transport vehicle in a first area in which articles are transported, and a second control device that controls the article transport vehicle in a second area in which adjustment of the article transport vehicle is performed. Based on a withdrawal instruction from the first control device, an operation control portion of an article transport vehicle that needs adjustment causes the article transport vehicle to enter the second area, and a communication control portion that can perform exclusive wireless communication with the first control device and the second control device changes the communication destination to the second control device.

Abstract: The article transport facility includes a plurality of article transport vehicles which can travel on a travel path defined by rails installed in the ceiling. The travel path includes a loop-shaped primary path, and secondary paths each arranged to extend along and by at least one article transport location, a first connecting path that connects the primary path and the secondary path, and a second connecting path, provided independently from the first connecting path, with one end portion connected to the secondary path located on one side of the primary path, and the other end portion connected to the secondary path located on the other side of the primary path.

Abstract: A path switching facility for crossed paths comprises: at least one article transport vehicle configured to travel along a first path and a second path that crosses the first path; a guide rail for guiding a guided roller of the article transport vehicle; a travel rail for guiding and supporting travel wheels of the article transport vehicle; a rotatable guide rail and a rotatable travel rail both located in a crossing area; a push operating portion provided to the article transport vehicle to push one of the rotatable guide rail and the rotatable travel rail; and, an operatively connecting device for coupling a rotation of the rotatable guide rail with a rotation of the rotatable travel rail.

Abstract: A path switching facility for crossed paths comprises: at least one article transport vehicle configured to travel along a first path and a second path that crosses the first path; a guide rail for guiding a guided roller of the article transport vehicle; a travel rail for guiding and supporting travel wheels of the article transport vehicle; a rotatable guide rail and a rotatable travel rail both located in a crossing area; a push operating portion provided to the article transport vehicle to push one of the rotatable guide rail and the rotatable travel rail; and, an operatively connecting device for coupling a rotation of the rotatable guide rail with a rotation of the rotatable travel rail.

Abstract: The article transport facility includes a plurality of article transport vehicles which can travel on a travel path defined by rails installed in the ceiling. The travel path includes a loop-shaped primary path, and secondary paths each arranged to extend along and by at least one article transport location, a first connecting path that connects the primary path and the secondary path, and a second connecting path, provided independently from the first connecting path, with one end portion connected to the secondary path located on one side of the primary path, and the other end portion connected to the secondary path located on the other side of the primary path.

Abstract: An OHC vertical crankshaft engine, comprising: a vertically disposed crankshaft having a first timing pulley at its lower end; a cooling fan attached to an upper end of the crankshaft; a camshaft extending in parallel with the crankshaft at a cylinder head end of the engine and having a second timing pulley at its lower end; and a timing belt passed around the timing pulleys. Thus, the need for lubrication for the transmission mechanism between the crankshaft and the camshaft is substantially eliminated, and the noise generation is reduced. Additionally, since the upper part of the cylinder head is directly exposed to the cooling air produced by a fan provided at an upper end of the crankshaft, a high engine cooling efficiency can be achieved. This effect is even more enhanced if the exhaust port of the engine is disposed above the intake port and extends horizontally and linearly away from the engine.

Abstract: A liquid cooled internal combustion engine, comprising: an integrally cast engine main body including a cylinder block, a cylinder head, and a crankcase skirt, a crankcase cover attached to an open end of the skirt to define a crankcase therein, a crankshaft extending vertically in the crankcase and rotatably supported by the skirt at its both ends, a camshaft rotatably supported by the cylinder head and extending in parallel with the crankshaft, a timing belt passed around pulleys mounted on lower ends of the camshaft and the crankshaft, respectively, and extending in a belt chamber defined in the cylinder block along a lower side of the cylinder bore; a cooling liquid jacket defined in the cylinder block along upper and lateral sides of the cylinder bore. The jacket may be formed during the casting process by pulling a core either upwards or toward the open end of the skirt. The cooling liquid may consist of the lubricating oil for the engine.

Abstract: A cooling structure for cooling a liquid-cooled engine has engine cooling passages defined in portions of the engine for circulating a cooling medium therethrough. The cooling structure further includes a rotatable assembly having a rotatable element located outside of the engine, and a radiation passage system of a prescribed length disposed in the rotatable element for rotation therewith and connected to the engine cooling passages.