Rescue robots that can penetrate into narrow gaps in the rubble, create and maintain spaces for rescuers after earthquakes are urgently needed in search and rescue missions. This paper proposes two novel rescue robots, including a cutting robot and a jack robot, which are used to cut obstacles and jack up heavy debris in hazardous locations and in narrow spaces, where rescuers cannot work or approach. Firstly, a multi-linked tracked, or snake-like rescue robot platform is designed, which is composed of modular crawler vehicles connected by active and passive joints with three degrees of freedom. This rescue robot platform has high mobility on irregular terrains and the ability to move into narrow collapsed structures. Then, portable rescue tools including an electric cutter and a novel electric screw jack are designed. In order to perform operations to the tools, manipulators with multi degrees of freedom are also developed. Consequently, the cutting robot and jack robot are realized by equipping the corresponding rescue tool and manipulator in the rescue robot platform. Finally, field tests of the two rescue robots operating on different terrains and performing rescue missions are carried out in the national training base for urban search and rescue. The results validated the mobility, cutting and lift-up capacity of the two rescue robots. The experiments show that they might play some role in rescue operations.