98results about How to "To achieve the locking effect" patented technology

The invention belongs to the field of film roll rolling devices and particularly relates to an edge locking clamp for rolling of film rollers. The edge locking clamp comprises upper roller wheels and lower roller wheels which form clamping rollers, and the matched clamping gaps of the upper roller wheels and the lower roller wheels form a gap for moving of a clamped thin film. The roller faces, in contact with the clamped thin film, on the upper roller wheels and / or the lower roller wheels are provided with conical faces. The axes of the conical faces are coaxial with the axes of the corresponding roller wheels of the conical faces, and the small ends of the conical faces point to the direction in which the clamped thin film is to be stretched and are arranged in the direction in which the clamped film is to be stretched. Each clamping roller formed through matching of the corresponding upper roller wheel and the corresponding lower roller wheel forms a set, at least two sets of the clamping rollers are arranged at the two sides of the clamped thin film respectively. According to the edge locking clamp, the clamping rollers with the conical faces are additionally arranged, so that the function of edge stabilizing and the function of edge locking in the moving process of the thin film are achieved by depending on the clamping and stretching force on the side edge of the thin film by the conical faces on the clamping rollers, the thin film is stretched tightly, flatness of stretching in the moving process of the thin film is finally ensured, and the edge deviation and corrugation phenomena of the thin film in the rolling process are improved and even avoided.

The invention relates to the technical field of anti-theft nets, in particular to an invisible anti-theft and anti-falling net provided with a locking structure and capable of preventing a user from adjusting the tightness of steel wires and a construction method. The invisible anti-theft and anti-falling net provided with the locking structure comprises locking discs, locking rods and locking magnetic pieces; the locking discs are fixed into inner cavities of sectional materials; and the locking magnetic pieces enable the locking rods to move through magnetic force to lock the locking discs.The construction method sequentially comprises the steps that the invisible anti-theft and anti-falling net provided with the locking structure is manufactured in a factory; the invisible anti-theft and anti-falling net provided with the locking structure is mounted in an area where mounting is to be conducted; tension of steel wire ropes of the invisible anti-theft and anti-falling net provided with the locking structure is adjusted to be small; cover plates of the lower mounting sectional material are mounted; and cover plates of the upper mounting sectional material are mounted. The effectthat bases and the cover plates are locked is achieved through the mode that the base locking discs and the cover plate locking discs are locked, and the user can be effectively prevented from openingthe cover plates of the sectional materials.

The invention discloses a novel door opening device and an application method thereof. The novel door opening device comprises a device body, a door lock device arranged in the device body and an anti-theft lock device arranged in the device body. The door lock device comprises a first working cavity formed in the device body. The upper side of the first working cavity is provided with an air cylinder cavity in a communicating manner. The lower side end wall of the first working cavity is internally and fixedly provided with a motor. An output shaft of the motor is fixedly provided with a transmission shaft which upwards extends and can extend and retract. The upper side end wall of the air cylinder cavity is internally and fixedly provided with a sensor. The lower end of the sensor is fixedly provided with an air cylinder. According to the novel door opening device, locking is firm, an anti-theft function can be started when error passwords are input multiple times during door opening, the situation that a loop-hole is provided for a thief due to the fact that a coded lock is too single is effectively avoided, and safety is improved.