Abstract: Provided is an intrusion simulator, and more particularly, an intrusion simulator capable of reproducing a situation in which a passenger's ankle is broken at the time of intrusion of a structure such as a steering gear box due to a head-on collision of a vehicle and a collision situation of passenger's knees with a wheel or a dash board due to the intruded structure, and applying the accelerating force using the automatically controllable servo actuator to reproduce each situation to perform the simulation so as to obtain the accurately measured values, and to improve a structure of the vehicle body in the development or production of the vehicle.

Abstract: Provided is a hybrid servo actuator for a crash test, and more particularly, a hybrid servo actuator for a crash test in which an operating part including a piston and a rod, a chamber supplying an air pressure to the operating part, and a controller controlling a movement of the operating part are integrally formed, thereby increasing a moving speed in a stroke direction of the operating part more than in a general hydraulic cylinder and pneumatic cylinder. The actuator includes an oil pressure cushion type cushion part provided therein to absorb a shock generated by a shock of an operating part even at the time of a malfunction of the operating part and discharge an oil pressure generated by the shock to the outside and thus is used semi-permanently.

Abstract: Provided is a weight balancing type dynamic yawing simulator, and more particularly, a weight balancing type dynamic yawing simulator capable of reproducing real crash situations and preventing a weight from leaning to one side by providing a simulator capable of reproducing crash results of a side direction and yawing to the existing simulator capable of reproducing crash results of a front direction, pitching, and a vertical direction of a vehicle, by providing a dynamic yawing simulator of a pitching and yawing composite safety apparatus type capable of reproducing crash results due to a side direction and yawing in a crash simulator for a vehicle, thereby preventing the simulator apparatus from being separated and broken.

Abstract: Provided is a weight balancing type dynamic yawing simulator, and more particularly, a weight balancing type dynamic yawing simulator capable of reproducing real crash situations and preventing a weight from leaning to one side by providing a simulator capable of reproducing crash results of a side direction and yawing to the existing simulator capable of reproducing crash results of a front direction, pitching, and a vertical direction of a vehicle, by providing a dynamic yawing simulator of a pitching and yawing composite safety apparatus type capable of reproducing crash results due to a side direction and yawing in a crash simulator for a vehicle, thereby preventing the simulator apparatus from being separated and broken.

Abstract: Provided is a hybrid servo actuator for a crash test, and more particularly, a hybrid servo actuator for a crash test in which an operating part including a piston and a rod, a chamber supplying an air pressure to the operating part, and a controller controlling a movement of the operating part are integrally formed, thereby increasing a moving speed in a stroke direction of the operating part more than in a general hydraulic cylinder and pneumatic cylinder. The actuator includes an oil pressure cushion type cushion part provided therein to absorb a shock generated by a shock of an operating part even at the time of a malfunction of the operating part and discharge an oil pressure generated by the shock to the outside and thus is used semi-permanently.

Abstract: Provided is an intrusion simulator, and more particularly, an intrusion simulator capable of reproducing a situation in which a passenger's ankle is broken at the time of intrusion of a structure such as a steering gear box due to a head-on collision of a vehicle and a collision situation of passenger's knees with a wheel or a dash board due to the intruded structure, and applying the accelerating force using the automatically controllable servo actuator to reproduce each situation to perform the simulation so as to obtain the accurately measured values, and to improve a structure of the vehicle body in the development or production of the vehicle.

Abstract: A quick coupler for an excavator includes a cylinder tube fixed to each lower end of an excavator arm and a link, and having fixing bolt holes formed on one side thereof; a piston housing fitted into the cylinder tube to be fixed by fixing bolts inserted into the fixing bolt holes, and joined with a rod cover at both ends thereof, respectively; a pair of pistons inserted into each side of the piston housing with a spring interposed therebetween, each piston having a mechanical seal formed at its inner end; the pair of rod covers inserted between an outer circumference of the piston and an inner circumference of the piston housing on each side of the piston housing for preventing leakage of hydraulic fluid; and a pair of coupler pins inserted between an outer circumference of the piston housing and an inner circumference of the cylinder tube on each side of the cylinder tube, each coupler pin formed in a cap-shape.

Abstract: A quick coupler for an excavator comprises a cylinder tube fixed to each lower end of an excavator arm and a link, and having fixing bolt holes formed on one side thereof; a piston housing fitted into the cylinder tube to be fixed by fixing bolts inserted into the fixing bolt holes, and joined with a rod cover at both ends thereof, respectively; a pair of pistons inserted into each side of the piston housing with a spring interposed therebetween, each piston having a mechanical seal formed at its inner end; a pair of rod covers inserted between an outer circumference of the piston and an inner circumference of the piston housing on each side of the piston housing for preventing leakage of hydraulic fluid; and a pair of coupler pins inserted between an outer circumference of the piston housing and an inner circumference of the cylinder tube on each side of the cylinder tube, each coupler pin formed in a cap-shape.

Abstract: A pneumatic cylinder includes a cushioning device having a first cushioning sleeve gradually decreasingly communicating a first cushioning chamber with a first passage formed on a first cap and connected to a first fluid flowing ports as the first cushioning sleeve is gradually inserted into the first passage; a second cushioning sleeve gradually decreasingly communicating a second cushioning chamber with a second passage formed on the second caps and connected to the second fluid flowing ports as the second cushioning sleeve is gradually inserted into the second passage; a first quick fluid exhaust valve which is mounted on the first cap and is selectively opened by pushing force of the piston to communicate the first cushioning chamber with the first passage; a second quick fluid exhaust valve which is mounted on the second cap and is selectively opened by pushing force of the piston to communicate the second cushioning chamber with the second passages; a first quick fluid supply valve which is mounted on t