Abstract: A pneumatic clamping device includes a main body, a piston, a first linkage member and a second linkage member. The main body includes a chamber. The piston includes a pillar part. The first linkage member includes a first arm part and a second arm part. The second linkage member includes a third arm part and a fourth arm part. When the air is introduced into the chamber, the pillar part is gradually moved to push the first arm part and the third arm part, so that the second arm part is externally expanded relative to the fourth arm part. When the air is exited from the chamber, the pillar part is gradually moved to pull back the first arm part and the third arm part, so that the second arm part is internally retracted relative to the fourth arm part.

Abstract: A pneumatic clamping device includes a main body, a piston, a first linkage member and a second linkage member. The main body includes a chamber. The piston includes a pillar part. The first linkage member includes a first arm part and a second arm part. The second linkage member includes a third arm part and a fourth arm part. When the air is introduced into the chamber, the pillar part is gradually moved to push the first arm part and the third arm part, so that the second arm part is externally expanded relative to the fourth arm part. When the air is exited from the chamber, the pillar part is gradually moved to pull back the first arm part and the third arm part, so that the second arm part is internally retracted relative to the fourth arm part.

Abstract: A lateral gripper includes a gripper mount, and two gripper jaw modules assembled on the gripper mount. Each gripper jaw module includes a sliding block and a gripper jaw. The sliding block drives the gripper jaw to slide on the gripper mount. The gripper jaw is configured to grip a drill box by multi-point contact, so that the freedom of the drill box is restricted, and the drill box can be stably carried by the gripper jaw modules.

Abstract: A lateral gripper includes a gripper mount, and two gripper jaw modules assembled on the gripper mount. Each gripper jaw module includes a sliding block and a gripper jaw. The sliding block drives the gripper jaw to slide on the gripper mount. The gripper jaw is configured to grip a drill box by multi-point contact, so that the freedom of the drill box is restricted, and the drill box can be stably carried by the gripper jaw modules.

Abstract: A plug that is firmly connected with a socket has a pair of parallel prongs and two protruded bases. One side of each protruded base has a receiving hole perpendicular to the parallel prongs. The socket has two slots corresponding to the two protruded bases. One side of each slot has a horizontal pin for inserting into a corresponding receiving hole. After the protruded bases are positioned on the slots of the socket, the plug can be rotated to insert the horizontal pins into the receiving holes.

Abstract: A plug that is firmly connected with a socket has a pair of parallel prongs and two protruded bases. One side of each protruded base has a receiving hole perpendicular to the parallel prongs. The socket has two slots corresponding to the two protruded bases. One side of each slot has a horizontal pin for inserting into a corresponding receiving hole. After the protruded bases are positioned on the slots of the socket, the plug can be rotated to insert the horizontal pins into the receiving holes.

Abstract: The present invention relates to a rescuing helmet having an illuminating device, a heat resistant helmet body, a fastening strap, a controlling unit and a compressed air tank. The heat resistant helmet body is provided with an air conduct for connecting a hose. The lower peripheral of the helmet body is provided with a resilient strap and the lower portion of the resilient strap is provided with a fastening strap. The other end of the fastening strap is connected with an air tank. The top outlet of the air tank is provided with a controlling unit which is configured with a metering throttle, a cover and a light triggering device. The metering throttle is provided with an air supplying duct to supply the fresh air to the helmet body via a hose. In use, the user may readily wear the helmet body and dispose the air tank in front of the chest. The metering throttle is then switched on such that a metered flow of air is supplied to the helmet body.