32results about How to "Meet the needs of fire protection" patented technology

The invention relates to a warp-knitted base sun shading material and a preparation method thereof. The preparation method comprises the following steps of: (1) providing polyester warp-knitted base cloth; (2) coating PVC slurry on the polyester warp-knitted base cloth, and drying the polyester warp-knitted base cloth to obtain an intermediate material; and (3) coating surface treatment slurry to the surface of the intermediate material obtained in the step (2), and drying the intermediate material to obtain the finished sun shading material. The PVC slurry and the surface treatment slurry in the preparation method are special slurry of the invention. The sun shading material has high mechanical function, fireproof function, insulating performance, self-cleaning performance and weather resistance besides the functions of appearance, visual effect and the like of a common curtain material.

The invention discloses a multifunctional rope releasing device for a lifting machine. The multifunctional rope releasing device comprises one or more coiling blocks, a falling object mechanical system, a pull rope and a cantilever. The coiling block or a rotating component connected with the coiling block is provided with a first magnet, and a non-rotating component at the opposite position of the first magnet on the coiling block or the rotating component is provided with a second magnet or second metal or second alloy capable of being attracted to the first magnet. The pull rope is connected with the coiling block, the pull rope is wound on the coiling block after being connected with the coiling block, extends out of the coiling block, penetrates through a turning pulley on the cantilever and then is connected with a weight, and the weight is controlled to drive the coiling block to rotate through the pull rope under the gravity by starting the falling object mechanical system.

The invention relates to an environment-friendly type flexible fireproof cable. The environment-friendly type flexible fireproof cable is characterized in that the fireproof insulated cable is formed by an outer wrapping layer and an inner core; the inner core is formed by stranding of a single core cable core or a multi-core cable core; the cable core is lapped with a double fireproof insulating layer; the outer wrapping layer is formed by means of successive wrapping of a thermal insulation layer, an oxygen isolating layer, an anti-impact layer and an oversheath; the double fireproof insulating layer is formed by stacking and lapping of internal and external layers of insulating layers made of different materials; the internal layer is lapped with a mineral insulating fireproof wrapping tape in a stacking way, and the thickness of the wrapping tape is 0.1-0.2mm; and the external layer is lapped with the fireproof material-ceramic polyolefin insulating material, and the thickness of the material-ceramic polyolefin insulating material is 1.0mm-3.5mm. During the combustion process, the double fireproof insulating layer can be quickly sintered into a hard ceramic hard housing which can effectively isolate the internal of the line from infringement of the high temperature flame and guarantee opening of the line when a fire occurs, wherein the cable works under the rated operational voltage; the flame temperature is greater than or equal to 750DEG C; and a fuse is not disconnected within the 90min fire supply time.

The invention discloses a multifunctional rope releasing device for a lifting machine. The multifunctional rope releasing device comprises one or more coiling blocks, a brake system and a pull rope. The brake system comprises a normally-closed brake and a remote controller. A damper brake of the normally-closed brake fixes the coiling block, and a rotating component connected with the coiling block is provided with a first magnet. A non-rotating component at the opposite position of the first magnet on the rotating component is provided with a second magnet or second metal or second alloy capable of being attracted to the first magnet. One end of the pull rope is connected to the coiling block, and the pull rope is wound on the coiling block, then extends out of the coiling block and is connected with a weight.

The invention provides a building with a multifunctional rope unreeling device. The building with the multifunctional rope unreeling device comprises the multifunctional rope unreeling device arranged on a roof layer of the building. The multifunctional rope unreeling device comprises one or more reeling barrels, an object falling mechanical system, pull ropes and a cantilever. The reeling barrels or rotary components connected with the reeling barrels are provided with magnets I. The positions, opposite to the magnets I on the reeling barrels or the rotary components, of non-rotary components are provided with magnets II or metal II or alloy II attracting the magnets I. The pull ropes and the reeling barrels are connected. After being connected with the reeling barrels, the pull ropes extend out of the reeling barrels to penetrate through direction change pulleys on the cantilever and then are connected with heavy objects.

The invention relates to a multifunctional rope unwinding device. The multifunctional rope unwinding device comprises one or more coiling blocks, a brake system and a descent control device; the brake system comprises a normal close brake and a remote control unit or a controller or a control pull rope, a first magnet is arranged on the coiling blocks or a rotation component connected with the coiling blocks, and a second magnet or second metal or second alloy which can be in mutual attraction with the first magnet is arranged on a non-rotation component at the position opposite to the first magnet on the coiling blocks or the rotation component; the descent control device is arranged on the coiling blocks, a descent control rope extending out from the descent control device is wound on the coiling blocks to be then connected with a heavy object, the remote control unit is started, and therefore a damper brake of the normal close brake can be controlled to loosen so as to enable the coiling blocks to rotate.