37results about How to "Improve fire fighting" patented technology

The invention discloses a novel fire extinguishing agent for a lithium battery and a preparation method of the novel fire extinguishing agent. The novel fire extinguishing agent for the lithium battery is composed of a flame retardant, an adsorbent, sodium bicarbonate, a foaming agent, a foam stabilizer and water, wherein the flame retardant is a mixture of (trimethylsilyl)phosphite and zinc borate; and the adsorbent is at least one selected from the group consisting of aluminum hydroxide, activated carbon, vermiculite and modified vermiculite. The novel fire extinguishing agent for the lithium battery has the advantages of being lasting in foam, high in cooling capacity and capable of effectively adsorbing harmful gas such as hydrogen fluoride.

Provided is a multifunctional rope releasing device. The multifunctional rope releasing device comprises a power transmission system or a hydraulic transmission system or a pneumatic transmission system, a reel or a rotating shaft, and a descent control device. A rotating shaft of a motor of the power transmission system or the hydraulic transmission system or the pneumatic transmission system candrive the reel or the rotating shaft to rotate through a transmission mechanism. The motor is an electric motor or a hydraulic motor or a pneumatic motor. The power transmission system comprises theelectric motor. A round ring is sleeved on the reel or the rotating shaft. The round ring can rotate around the reel or the rotating shaft. The round ring is provided with a blocking surface. The reelor the rotating shaft is provided with a blocking piece. The descent control device is arranged on the round ring. A slow descent rope of the descent control device extends out from the descent control device and is coiled on the reel or the rotating shaft, and a cable connected with the electric motor or a motor or a magnetic exchange valve is connected with a power supply through an electricalcontrol system.

The invention discloses multifunctional rope unwinding equipment. The multifunctional rope unwinding equipment comprises one or more shell devices; the shell device includes a motor, a rotating body and a pull rope; the motor is connected with the rotating body directly or through a transmission mechanism; the rotating body only can rotate in one direction, and is locked without rotating in an opposite direction; the pull rope is hung and connected to the rotating body; and the pull rope is wound on the rotating body or a winding drum or a winding shaft and extends out from the rotating body or the winding drum or the winding shaft after extending from the rotating body. The multifunctional rope unwinding equipment is connected with a remote controller, or is connected with a section of control cable provided with a controller, or is connected with a section of control pull rope.

The invention provides multifunctional rope paying-off equipment. The multifunctional rope paying-off equipment comprises one or more pieces of shell equipment. Each piece of shell equipment comprises a motor, a rotating body, a pull rope and a ratchet mechanism, wherein the motor is connected with the rotating body directly or through a transmission mechanism; the rotating body is connected with the ratchet mechanism, and the pull rope is connected to the rotating body in a hung mode; and the pull rope is wound on the rotating body or a winding drum or a winding shaft after extending out of the rotating body and extends out of the rotating body or the winding drum or the winding shaft. The multifunctional rope paying-off equipment is connected with a remote controller or connected with a control cable with a controller or connected with a control pull rope, the motors can be controlled through the remote controller or the control pull rope to drive the pull ropes to extend out of the rotating bodies or the winding drums or the winding shafts, and the pull ropes extending out in the rotating mode are hung on the rotating bodies in a pulled mode.

A multifunctional rope lowering device comprises one or a plurality of housing devices, wherein each housing device comprises a motor, a rotating body, a pulling rope and a descending device; each motor is connected with the corresponding rotating body; the rotating bodies can be rotated in only one direction and are locked and cannot be rotated in the opposite direction; the pulling ropes are connected to the rotating bodies, and the descending devices are arranged on the corresponding rotating bodies; the pulling ropes and descending ropes of the descending devices extend from the corresponding rotating bodies and then coil the corresponding rotating bodies or coil coiling blocks or reels and extend from the corresponding rotating bodies or the corresponding coiling blocks or the corresponding reels; the multifunctional rope lowering device is connected with a remote controller or connected with a control cable which is provided with a controller, or a triggering mechanism of the multifunctional rope lowering device is connected with a control pulling rope.

A building with a multifunctional rope-releasing device comprises the multifunctional rope-releasing device arranged on a roof layer of the building. The multifunctional rope-releasing device comprises one or a plurality of housing devices, wherein each housing device includes a motor, a rotating body, a stay rope and a ratchet mechanism. The motor is connected with the rotating body in a direct way or via a transmission mechanism; the rotating body is connected with the ratchet mechanism; the stay rope is connected to the rotating body; the stay rope extends out of the rotating body and then winds the rotating body or on a rolling cylinder or a reel, and extends out of the rotating body, the rolling cylinder or the reel; by the use of a remote controller or a controller or a controllable motor controlling the stay rope, the rotating body can be driven to rotate or the rotating body and the rolling cylinder to rotate or the rotating body and the reel to rotate at the same time, so the stay rope can rotationally extend out of the rotating body or the rolling cylinder or the reel; and the stay rope after rotary extension can be hung on the rotating body.

The invention provides multifunctional rope paying-off equipment. The multifunctional rope paying-off equipment comprises a shell, a motor, a winding drum or a rotating shaft, and a pull rope, wherein the motor, the winding drum or the rotating shaft, and the pull rope are arranged in the shell; the motor can drive the winding drum or the rotating shaft to rotate; the winding drum or the rotating shaft is sleeved with a circular ring, and the circular ring can rotate around the winding drum or the rotating shaft; the circular ring is provided with a blocking surface, and the winding drum or the rotating shaft is provided with a blocking piece; and one end of the pull rope is connected to the circular ring, and after the blocking piece of the winding drum or the rotating shaft clamps the blocking surface of the circular ring, the pull rope extends out of the circular ring to be wound on the winding drum or the rotating shaft and then extends out of the winding drum or the rotating shaft to be connected with a weight.

The invention discloses multifunctional rope unwinding equipment with a rescue function. The multifunctional rope unwinding equipment comprises an electric transmission system or a hydraulic transmission system or a pneumatic transmission system, a rotating body and a pull rope, wherein a rotating shaft of a motor of the electric transmission system or the hydraulic transmission system or the pneumatic transmission system is connected with the rotating body directly or through a transmission mechanism, the rotating body is connected with a ratchet wheel mechanism, and the pull rope is connected on the rotating body; the pull rope extends out of the rotating body, and then is wound around the rotating body, a reel or a winding shaft, and further extend out of the rotating body, the reel orthe winding shaft so as to be connected with a heavy object; and a cable connected with the electric transmission system or the hydraulic transmission system or the pneumatic transmission system is connected with a power supply through an electrical control system.

The invention discloses multifunctional rope unwinding equipment. The multifunctional rope unwinding equipment comprises a shell body, a motor, a reel and a pull rope, wherein the motor, the reel andthe pull rope are arranged in the shell body; the motor is capable of driving the reel to rotate; a circular ring sleeves the reel; the circular ring is capable of rotating around the reel; a stoppingsurface is arranged on the circular ring; a stopping element is arranged on the reel; one end of the pull rope is connected to the circular ring; the pull rope extends out from the circular ring andis wound on the reel, and then extends out from the reel and is connected with a heavy object; a cable connected with the motor is connected with a power supply through a main contact of a contactor;and a coil of the contactor is connected with a PLC and the power supply to form a loop.

The invention discloses multifunctional rope reeling-off equipment which comprises a shell, a motor, a coiling block or rotating shaft and a descent control device. The motor, the coiling block or rotating shaft and the descent control device are arranged in the shell. The motor can drive the coiling block or rotating shaft to rotate through a transmission mechanism. The coiling block or rotatingshaft is sleeved with a circular ring, the circular ring is provided with a blocking face, the coiling block or rotating shaft is provided with a blocking piece, the descent control device is arrangedon the circular ring, a descent control rope of the descent control device is extended out of the descent control device to be coiled to the coiling block or rotating shaft and then extended out of the coiling block or rotating shaft, and a cable connected with the motor is connected with a power source through an electrical control system.

Provided is multifunctional rope pay-off equipment. The multifunctional rope pay-off equipment comprises a shell body, a hydraulic transmission system, reeling barrels or rotating shafts and a slow descending device. The hydraulic transmission system, the reeling barrels or the rotating shafts and the slow descending device are arranged inside the shell body. The hydraulic transmission system comprises a hydraulic motor which can drive the reeling barrels or the rotating shafts to rotate. The reeling barrels or the rotating shafts are sleeved with circular rings which can rotate around the reeling barrels or the rotating shafts. Blocking faces are arranged on the circular rings, and blocking members are arranged on the reeling barrels or the rotating shafts. The slow descending device is arranged on the circular rings. After slow descending ropes of the slow descending device extend out from the slow descending device and are wound around the reeling barrels or the rotating shafts, the slow descending ropes extend out from the reeling barrels or the rotating shafts and are connected with heavy items. The multifunctional rope pay-off equipment is connected with a section of controlling cable which is connected with a controller and extends out of the shell body or the multifunctional rope pay-off equipment is connected with a section of controlling pulling rope which extends out of the shell body.

The invention discloses multifunctional rope unwinding equipment. The multifunctional rope unwinding equipment comprises one or more pieces of shell equipment; each piece of the shell equipment comprises a motor, rotating bodies, pull ropes and descent control devices; the motor is connected with the rotating bodies directly or through a transmission mechanism; the rotating bodies are connected with ratchet mechanisms; the pull ropes are connected to the rotating bodies; the descent control devices are arranged on the rotating bodies; the pull ropes and descent control ropes of the descent control devices wind the rotating bodies or wind winding drums or winding shafts after extending out from the rotating bodies and extend out from the rotating bodies or the winding drums or the winding shafts; the multifunctional rope unwinding equipment is connected with a remote controller, or the multifunctional rope unwinding equipment is connected with a control cable which is provided with a controller, or the multifunctional rope unwinding equipment is connected with a control pull rope.

The invention discloses a multifunctional rope releasing device. The multifunctional rope releasing device comprises a shell, a hydraulic transmission system, coiling blocks or rotating shafts and pull ropes. The hydraulic transmission system, the coiling blocks or the rotating shafts and the pull ropes are arranged in the shell. The hydraulic transmission system comprises a hydraulic motor. The hydraulic motor, the coiling blocks or the rotating shafts and the pull ropes are arranged in the shell. The hydraulic motor can drive the coiling blocks or the rotating shafts to rotate, the coiling blocks or the rotating shafts are sleeved with circular rings, and the circular rings can rotate around the coiling blocks or the rotating shafts. The circular rings are provided with blocking faces. The coiling blocks or the rotating shafts are provided with blocking pieces. One ends of the pull ropes are connected to the circular rings. After the blocking pieces on the coiling blocks or the rotating shafts clamp the blocking faces on the circular rings, the pull ropes extend out of the circular rings to be wound on the coiling blocks or the rotating shafts to extend out of the coiling blocks or the rotating shafts to be connected with weights.

The invention discloses multifunctional rope releasing equipment. The multifunctional rope releasing equipment comprises a shell, a motor, a winding drum, and a descent control device; the motor can drive the winding drum to rotate; the winding drum is sleeved with a ring, and the ring can rotate around the winding drum; a stop surface is arranged on the ring; a stop piece is arranged on the winding drum; the ring is provided with the descent control device; a slow descending rope of the descent control device is wound on the winding drum to connect with a weight after extending from the descent control device; a cable connected with the motor is connected with a power supply through a main contact point of a contactor; a coil of the contactor is connected with a PLC and the power supply to form a loop; and a button or a touch screen connected with the PLC can be used for controlling closing of the main contact point of the contactor and electrifying the motor to forwards or reverselyrotate.

The invention discloses a building with multifunctional rope unwinding equipment. The building with the multifunctional rope unwinding equipment comprises the multifunctional rope unwinding equipmentarranged on a roof or a refuge storey or an upper storey of the building, wherein the multifunctional rope unwinding equipment comprises a motor, a reel and a pull rope; the motor, the reel and the pull rope are arranged on the roof storey or the refuge storey or the upper storey; the motor is capable of driving the reel to rotate; a circular ring sleeves the reel; a stopping surface is arranged on the circular ring; a stopping element is arranged on the reel; one end of the pull rope is connected to the circular ring; the pull rope extends out from the circular ring and is wound on the reel,and then extends out from the reel and is connected with a heavy object; and a cable connected with the motor extends downwards to reach a place below the building or reach the outside of the buildingand is connected with a power supply through a main contact of a contactor.

The invention discloses multifunctional rope releasing equipment which comprises a housing, a motor, winding drums or rotary shafts, and pulling ropes; the motor, the winding drums or the rotary shafts, and the pulling ropes are arranged in the housing; the motor can drive the winding drums or the rotary shafts to rotate; the winding drums or the rotary shafts are sleeved with rings; the rings canrotate around the winding drums or the rotary shafts; blocking surfaces are arranged on the rings; blocking pieces are arranged on the winding drums or the rotary shafts; one ends of the pulling ropes are connected with the rings; the pulling ropes extend out of the rings to be wound on the winding drums or the rotary shafts, and then extend out of the winding drums or the rotary shafts; a cableconnected with the motor is connected with a power supply through main contacts of contactors; and coils of the contactors are connected with a PLC and the power supply for forming a return circuit.

The invention discloses multifunctional rope releasing equipment. The multifunctional rope releasing equipment comprises a shell, a motor, a winding drum or a rotating shaft, and a descend control device; the motor can drive the winding drum or the rotating shaft to rotate; a ring sleeves the winding drum or the rotating shaft, and can surround the winding drum or the rotating shaft to rotate; a stop surface is arranged on the ring; a stop piece is arranged on the winding drum or the rotating shaft; the descend control device is arranged on the ring; a slow descending rope of the descend control device is wound on the rotating shaft or the winding drum after extending from the descend control device; a cable connected with the motor is connected with a power supply through a main contact point of a contactor; a coil of the contactor is connected with a PLC and the power supply to form a loop; and a button or a touch screen connected with the PLC can be used for controlling closing of the main contact point of the contactor and electrifying the motor to forwards rotate or reversely rotate.

Provided is a building or a structure with a multifunctional rope releasing device. The multifunctional rope releasing device is arranged on a roof of the building. The multifunctional rope releasingdevice comprises a power transmission system or a hydraulic transmission system or a pneumatic transmission system, a reel, and a stay rope. A rotating shaft of a motor of the power transmission system or the hydraulic transmission system or the pneumatic transmission system can drive the reel to rotate. A round ring is sleeved on the reel, and the round ring can rotate around the reel. A blockingsurface is arranged on the round ring. A blocking component is arranged on the reel. One end of the stay rope is connected with the round ring. The stay rope extends out from the round ring and is coiled on the reel, and then extends out from the reel and is directly connected with a weight or is connected with a weight after passing through a line groove of a turning pulley. The weight structurecomprises a rubber ball or a fixed pulley or a movable pulley. A cable connected with the motor extends out, and is connected with a power supply on the upper part of the building which is provided with the multifunctional rope releasing device, the cable being connected with the power supply through an electrical control system.

The invention provides a building with a multifunctional rope unwinding device. The building with the multifunctional rope unwinding device comprises the multifunctional rope unwinding device arrangedabove the building; the multifunctional rope unwinding device comprises an electric machine, coiling blocks and pulling ropes; the electric machine can drive the coiling blocks to rotate; the coilingblocks are sleeved with rings; the rings can rotate around the coiling blocks; the rings are provided with blocking faces; the coiling blocks are provided with blocking pieces; one end of each pulling rope is connected to the corresponding ring; after the pulling ropes extend out of the rings and are wound on the coiling blocks, the pulling ropes extend out of the coiling blocks and are directlyconnected with heavy objects or are connected with the heavy objects after penetrating wire grooves of direction changing pulleys; and the structure of each heavy object comprises a rubber ball or a fixed pulley or a movable pulley, and a cable connected with the electric machine extends outwards, and is connected with a power source above the building with the multifunctional rope unwinding device through an electric control system.

The invention provides multifunctional rope unwinding equipment. The multifunctional rope unwinding equipment comprises a shell, motors, winding drums or rotating shafts and descent control devices, wherein the motors, the winding drums or rotating shafts and the descent control devices are arranged in the shell, each motor can drive the corresponding winding drum or rotating shaft to rotate through a transmission mechanism, a circular ring is arranged on each winding drum or rotating shaft in a sleeving manner and can rotate around the winding drum or rotating shaft, each circular ring is provided with a blocking surface, a blocking part is arranged on each winding drum or rotating shaft, each descent control device is arranged on the corresponding circular ring, and a descent control rope of each descent control device extends out of the descent control device to be wound on the corresponding winding drum or rotating shaft and then extends out of the winding drum or rotating shaft to be connected with a weight. The multifunctional rope unwinding equipment is connected with a section of control cable which extends out of the shell and is connected with a controller, or the multifunctional rope unwinding equipment is connected with a section of control stay rope which extends out of the shell.

A multifunctional rope paying-off device comprises a shell, a motor, winding drums and stay ropes. The motor, the winding drums and the stay ropes are arranged in the shell. The motor is connected with the winding drums and can drive the winding drums to rotate. The winding drums are sleeved with round rings. The round rings can rotate around the winding drums. The round rings are provided with stopping faces. The winding drums are provided with stopping pieces. One end of each stay rope is connected to the corresponding round ring, and each stay rope extends out from the round ring, is woundaround the corresponding winding drum and then extends out from the winding drum to be connected with a weight. A cable connected with the motor is connected with a power source through an electricalcontrol system.

The invention discloses a building with a multifunctional rope releasing device. The building with the multifunctional rope releasing device comprises the multifunctional rope releasing device arranged on a roof layer of the building. The multifunctional rope releasing device comprises one or more shell devices. Each shell device comprises a motor, rotating bodies, pull ropes and descent control devices, wherein the motor is directly connected with the rotating bodies or connected with the rotating bodies through transmission mechanisms; the above rotating bodies can only rotate in one direction and are locked in opposite directions and cannot rotate; the above pull ropes are connected to the rotating bodies in a hanging manner; the above descent control devices are arranged on the rotating bodies; the above pull ropes and descent control ropes of the descent control devices extend out from the rotating bodies, then are wound around the rotating bodies and extend out from the rotating bodies; and the rotationally extending-out pull ropes are pulled on the above rotating bodies in a hanging manner, and the rotationally extending-out descent control ropes are pulled on the descent control devices in a hanging manner.

The invention provides a multifunctional rope unwinding device. The multifunctional rope unwinding device comprises a shell, an electric machine, coiling blocks and a slow descending device; the electric machine, the coiling blocks and the slow descending device are arranged in the shell; the electric machine can drive the coiling blocks to rotate through a transmission mechanism; the coiling blocks are sleeved with rings; the rings are provided with blocking faces; the coiling blocks or rotating shafts are provided with blocking pieces; the slow descending device is arranged on the corresponding ring; after slow descending ropes of the slow descending device extend out of the slow descending device to be wound on the coiling blocks, the slow descending ropes of the slow descending deviceextend out of the coiling blocks to be connected with heavy objects; and a cable connected with the electric machine is connected with a power source through an electric control system.

The invention discloses a building with multifunctional rope unwinding equipment. The building with the multifunctional rope unwinding equipment comprises the multifunctional rope unwinding equipmentarranged above the building, wherein the multifunctional rope unwinding equipment comprises a motor, a reel and a pull rope; the motor is connected with the reel directly or through a transmission member and capable of driving the reel to rotate; a circular ring sleeves the reel; a stopping surface is arranged on the circular ring; a stopping element is arranged on the reel; one end of the pull rope is connected to the circular ring; the pull rope extends out from the circular ring, is wound on the reel, and then extends out from the reel; a cable connected with the motor extends outwards andis connected with a power supply through a main contact of a contactor above the building provided with the multifunctional rope unwinding equipment; and a coil of the contactor is connected with a PLC and the power supply to form a loop.

The invention provides a building with a multifunctional rope unwinding device. The building with the multifunctional rope unwinding device comprises the multifunctional rope unwinding device arranged on a roof layer of the building; the multifunctional rope unwinding device comprises one or more shell devices; each shell device comprises a motor, a rotating body and a slow lowering device; each motor is directly connected with the corresponding rotating body through a transmission mechanism; each rotating body can only rotate in one direction and is locked and cannot rotate in the opposite direction; each slow lowering device is arranged on the corresponding rotating body; and a slow lowering rope of each slow lowering device is coiled on the corresponding rotating body or is coiled on a coiling block or a rotating shaft after extending out of the rotating body, and extends out of the rotating body, or the coiling block or the rotating shaft. A remote controller can be used for controlling each motor to drive the corresponding slow lowering rope to extend out of the rotating body, or the coiling block or the rotating shaft.

The invention discloses multifunctional rope paying-off equipment. The multifunctional rope paying-off equipment comprises two or more sets of shell equipment. Each set of shell equipment comprises a shell, a motor, winding drums or rotating shafts and a descent control device. Each motor, the corresponding winding drums or rotating shafts and the corresponding descent control device are arranged in the corresponding shell. Each motor can drive the corresponding winding drums or rotating shafts to rotate. Each winding drum or rotating shaft is sleeved with a circular ring. Each circular ring can rotate around the corresponding winding drum or rotating shaft. Each circular ring is provided with a blocking face. Each winding drum or rotating shaft is provided with a blocking part. Each descent control device is arranged on the corresponding circular ring. After extending out of the corresponding descent control device and being wound on the corresponding winding drums or rotating shafts, slow descent ropes of each descent control device extend out of the corresponding winding drums or rotating shafts and are connected with weights. The multifunctional rope paying-off equipment is connected with a control cable with one section extending out of the shells and provided with a controller or connected with a section of control pull rope extending out of the shells.

The invention discloses a building with multifunctional rope releasing equipment. The multifunctional rope releasing equipment comprises a motor, a winding drum, and a pull rope; the motor, the winding drum and the pull rope are arranged on a roof floor or an upper floor; a ring sleeves the winding drum, and is provided with a stop surface; a stop piece is arranged on the winding drum or a rotating shaft; one end of the pull rope is connected to the ring; the pull rope extends from the ring to wind on the winding drum, and extends from the winding drum to connect with a weight; a cable connected with the motor downwards extends to the lower side or the external of the building, and is connected with a power supply through an electric control system; and the motor can forwards or reverselyrotate to drive the pull rope to rotationally extend from the winding drum or the rotating shaft and to hang on the ring.

The invention discloses a building with multifunctional rope releasing equipment. The multifunctional rope releasing equipment comprises a motor, coiling blocks or rotation shafts and pull ropes. Themotor, the coiling blocks or the rotation shafts and the pull ropes are arranged on the roof layer or the refuge floor or the upper floor. Each of the coiling blocks or the rotation shafts is sleevedwith a circular ring. Each circular ring is provided with a stop face. Each coiling block or rotation shaft is provided with a stop piece. One ends of the pull ropes are connected to the circular rings, and the pull ropes are wound around the coiling blocks or the rotation shafts after extending out of the circular rings and then extend out of the coiling blocks or the rotation shafts. A cable connected with the motor downwards extends to the lower portion or the outer portion of the building and is connected with a power source through an electrical control system. Through forward rotation orreverse rotation of the motor, the pull ropes can be driven to rotationally extend out of the coiling blocks or the rotation shafts, and hung and pulled on the circular rings.

The invention discloses a multifunctional rope releasing device. The multifunctional rope releasing device comprises a shell, an air pressure transmission system, coiling blocks or rotating shafts and pull ropes. The air pressure transmission system comprises a pneumatic motor. The pneumatic motor, the coiling blocks or the rotating shafts and the pull ropes are arranged in the shell. The pneumatic motor is connected with the coiling blocks or the rotating shafts through the transmission mechanism and can drive the coiling blocks or the rotating shafts to rotate, the coiling blocks or the rotating shafts are sleeved with circular rings, and the circular rings can rotate around the coiling blocks or the rotating shafts. The circular rings are provided with blocking faces. The coiling blocks or the rotating shafts are provided with blocking pieces. One ends of the pull ropes are connected to the circular rings. After the blocking pieces on the coiling blocks or the rotating shafts clamp the blocking faces on the circular rings, the pull ropes extend out of the circular rings to be wound on the coiling blocks or the rotating shafts to extend out of the coiling blocks or the rotating shafts to be connected with weights.

The invention discloses a building with a multifunctional rope unrolling device. The building with the multifunctional rope unrolling device comprises the multifunctional rope unrolling device arranged on a roof layer of the building. The multifunctional rope unrolling device comprises one or more shell devices. Each shell device comprises a motor, a rotating body, a pull rope and a descent control device, wherein a rotating shaft of the motor is directly connected with the rotating body or connected with the rotating body through a transmission mechanism, the rotating body is connected with a ratchet mechanism, the pull rope is connected to the rotating body, the descent control device is arranged on the rotating body, the pull rope and a descent control rope of the descent control device are wound on the rotating body after extending out of the rotating body and extends out of the rotating body, a remote controller or a controller or a control pull rope is used for controlling the motor to drive the pull rope and the descent control rope to rotationally extend out of the rotating body or a coiling block or a reel, the rotationally extent pull rope is hung on the rotating bodies in a pulled manner, and the rotationally extent descent control rope is hung on the descent control device in a pulled manner.