Abstract: A full side openable boxcar is provided according to the present application, which includes multiple doors movable in a direction of a body of the boxcar, and opening and closing devices each being configured to activate the opening and closing of the respective doors; in a closing state, the doors are arranged sequentially to form one side wall of the full side openable boxcar, and opening is required, the opening and closing devices activate the doors to translate in an inner-outer direction, to allow the doors to be staggered and moved in a longitudinal direction of the car body to open the corresponding position of the full side openable boxcar. The design of a door assembly is optimized so as to improve the simplicity and flexibility of door opening and closing, thereby ensuring the improvement in cargo loading and unloading efficiency.

Abstract: A bottom door of a carriage includes a telescoping cylinder and at least two sets of door bodies, each set of the door body is provided with one set of driving mechanisms, each of the driving mechanisms includes a rotating shaft and a driving rod, and the rotating shaft is connected with the respective door body by the driving rod, to allow the door body to be driven to rotate when the rotating shaft rotates; each of the rotating shaft is driven to rotate by the telescoping cylinder, and at least two of the rotating shafts are configured to be driven to rotate successively by the telescoping cylinder.

Abstract: A full side openable boxcar is provided according to the present application, which includes multiple doors movable in a direction of a body of the boxcar, and opening and closing devices each being configured to activate the opening and closing of the respective doors; in a closing state, the doors are arranged sequentially to form one side wall of the full side openable boxcar, and opening is required, the opening and closing devices activate the doors to translate in an inner-outer direction, to allow the doors to he staggered and moved in a longitudinal direction of the car body to open the corresponding position of the full side openable boxcar. The design of a door assembly is optimized so as to improve the simplicity and flexibility of door opening and closing, thereby ensuring the improvement in cargo loading and unloading efficiency.

Abstract: A bottom door of a carriage includes a telescoping cylinder and at least two sets of door bodies, each set of the door body is provided with one set of driving mechanisms, each of the driving mechanisms includes a rotating shaft and a driving rod, and the rotating shaft is connected with the respective door body by the driving rod, to allow the door body to be driven to rotate when the rotating shaft rotates; each of the rotating shaft is driven to rotate by the telescoping cylinder, and at least two of the rotating shafts are configured to be driven to rotate successively by the telescoping cylinder.

Abstract: A piston, including a piston head, a piston skirt, a cooling gallery connected to an oil inlet/outlet, two gas ring grooves, and one oil ring groove. The piston head and the piston skirt are made of forged steel. The piston head is fixedly connected to the piston skirt. The cooling gallery is disposed between the piston head and the piston skirt. The gas ring grooves and the oil ring groove are disposed on the piston skirt, and the oil ring groove is below the gas ring grooves. The piston skirt includes a pin boss; the upper end of the pin boss is connected to the lower end of the piston head via a screw thread. The top circle of the upper end of the piston head and the inner chamber of the top land of the piston skirt are coupled by an interference fit.

Abstract: The present application provides a bottom door device and a hopper car, the bottom door device includes a first bottom door and a second bottom door, the first bottom door includes a first door end plate and a first bottom door plate which are fixedly connected, the second bottom door includes a second door end plate and a second bottom door plate which are fixedly connected, and a labyrinth seal is formed between the first bottom door plate and the second bottom door plate. By using a labyrinth seal to replace the overlapping sealing in the prior art, the bottom door device and the hopper car provided by the present application can still meet the sealing requirement on the premise that the two bottom door plates can be closed without complying with any specific order, thereby optimizing the structure of the bottom door device in the prior art.

Abstract: The present invention discloses a ballast hopper car discharge door control system, comprising a control box, said control box comprises electrical pneumatic control system and receiving device; hydraulic system, connected to electrical pneumatic control system; manual control device and remote control device are operated to control opening or closing of ballast hopper car discharge doors; storage battery, configured to provide electrical pneumatic control system in said control box with continuous power supply and remote control device with charging power supply; pressure switch, arranged between control box and storage battery, said pressure switch is operated by pressure of air source to control connecting and disconnecting between storage battery and control box.

Abstract: The present application provides a bottom door device and a hopper car, the bottom door device includes a first bottom door and a second bottom door, the first bottom door includes a first door end plate and a first bottom door plate which are fixedly connected, the second bottom door includes a second door end plate and a second bottom door plate which are fixedly connected, and a labyrinth seal is formed between the first bottom door plate and the second bottom door plate. By using a labyrinth seal to replace the overlapping sealing in the prior art, the bottom door device and the hopper car provided by the present application can still meet the sealing requirement on the premise that the two bottom door plates can be closed without complying with any specific order, thereby optimizing the structure of the bottom door device in the prior art.

Abstract: The present invention discloses a ballast hopper car discharge door control system, comprising a control box, said control box comprises electrical pneumatic control system and receiving device; hydraulic system, connected to electrical pneumatic control system; manual control device and remote control device are operated to control opening or closing of ballast hopper car discharge doors; storage battery, configured to provide electrical pneumatic control system in said control box with continuous power supply and remote control device with charging power supply; pressure switch, arranged between control box and storage battery, said pressure switch is operated by pressure of air source to control connecting and disconnecting between storage battery and control box.