Self-rescue system for people trapped in elevator
By designing a trapped elevator self-rescue system with anti-fall and anti-impact, level floor limit, lock release and door unlocking mechanism, the safety risks faced by trapped elevator personnel due to sudden movement of the car or the door cannot be opened, and the safety self-rescue of the trapped people and the normal operation of the elevator are achieved.
Patent Information
- Application Number
- CN202510475957.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2025-06-20
AI Technical Summary
When the elevator fails, trapped people cannot save themselves safely, and are prone to injury due to sudden rise or fall of the car, and the car doors and floor doors cannot be opened, resulting in the risk of hypoxia, fainting or suffocation death.
A self-rescue system for trapped elevator personnel including an anti-fall and anti-impact mechanism, a flat-layer limit mechanism, a lock-release and slow-down mechanism and a door unlocking mechanism are designed. The anti-fall and anti-impact mechanism prevents the car from rising or falling suddenly through the rope clamp and rope tightening device. The flat-layer limiting mechanism controls the car to the flat-layer position through the parking block and the flat-layer stop. The lock-release and lowering mechanism realizes the safe drop of the car through the lock-release and the lowering device. The door unlocking mechanism unlocks the car door and the layer door through the unlocking gate and the pull-release wire.
The system can ensure safety, so that trapped people can rescue themselves and escape, avoid injuries or death caused by sudden movement of the car or the door cannot be opened, and restore normal operation after the elevator failure is eliminated.
Smart Images
Figure CN120172224A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an elevator safety device, in particular to a self-rescue system for people trapped in an elevator. Background Art
[0002] With the development of society, more and more high-rise buildings are equipped with elevators. Many duplexes and old buildings that originally did not have elevators are also installing elevators to meet the needs of residents. During the long-term use of elevators, various faults may occur due to power outages or other factors. Elevator failures include both the situation where the car falls or hits the top, the situation where the car stops between floors and cannot rise or fall, and the situation where the car door or floor door cannot be opened. The latter two situations do not seem serious, but if the trapped people are trapped in the car for a long time and cannot be rescued, they may also suffer from hypoxia, fainting, or even suffocation and death. Trapped people sometimes forcibly try to pull the car door and floor door in an attempt to escape. At this time, if the car suddenly rises or falls, the escapee will be squeezed or killed. Therefore, if the people trapped in the car want to save themselves, they first need to ensure that the car will not rise or fall suddenly during self-rescue and escape. Secondly, the car needs to be in a flat position, and the car door and floor door can be pushed open so that the trapped people can get out of the car and escape. Summary of the invention
[0003] The object of the present invention is to provide a self-rescue system for trapped elevator personnel, which can enable the personnel trapped in the elevator car to save themselves and escape while ensuring safety.
[0004] The technical solution of the present invention is: it includes an anti-falling and anti-collision mechanism, a leveling limit mechanism, a lock-release slow-descent mechanism and a door unlocking mechanism: The anti-fall and anti-collision mechanism includes a pull rope, a tension spring, a rope tightener and an elevator rope clamp. The pull rope is vertically arranged in the elevator shaft. The lower end of the pull rope is connected to the bottom of the elevator shaft, and the upper end is connected to the upper part of the elevator shaft through the tension spring. The pull rope is connected to the elevator rope clamp below the tension spring. The rope tightener is located outside the car and hinged on the outer wall of the car. The rope tightener is provided with rope tightening grooves located on both sides of the pull rope. A rope tightening handle is provided on the rope tightener at a position deviating from the hinge axis, one end of which is connected to the rope tightener and the other end extends into the car, and is used to turn the rope tightener to pull the pull rope down; The leveling limit mechanism includes a car stop block and a plurality of leveling blocks. The car stop block is movably mounted on the car, extends outward to cooperate with the leveling block, and retracts to avoid the leveling block. Each leveling block is respectively mounted on the side wall of the elevator shaft on different floors at a position that cooperates with the car stop block. The lock-release slow-descent mechanism includes a lock release and a slow-descent device. The lock release includes an upper connector and a lower connector that are engaged and disengaged with each other. The slow-descent device is composed of a shell and a telescopic rod slidably mounted on the shell. The upper connector of the lock release is connected to the elevator pulley of the car, and the lower connector is connected to the car. The end of the telescopic rod of the slow-descent device facing upward is connected to the elevator pulley of the car. The shell of the slow-descent device is fixedly connected to the car. The lower connector of the lock release is provided with a release handle extending into the car for controlling the upper connector and the lower connector of the lock release to separate. The door unlocking mechanism includes an unlocking brake wire and a brake wire puller. The unlocking brake wire is composed of a brake wire sleeve and a brake wire located in the brake wire sleeve. The brake wire sleeve and the brake wire at one end of the unlocking brake wire are connected to the brake wire puller, and the brake wire sleeve at the other end is connected to a door knife of the car, and the brake wire is connected to another door knife of the car.
[0005] The technical effect of the present invention is that it enables trapped car personnel to achieve self-rescue and escape while ensuring safety, thus protecting the lives of people riding the elevator. It can activate the rope clamp when an elevator fails, hold the steel wire rope that drives the car up and down, and at the same time cut off the elevator's safety circuit, so that the elevator traction machine cannot be started again to prevent the car from rising, and can control the car to descend to the level position, and can also unlock the car door and floor door so that the trapped person can push open the car door and floor door to get out of the car and escape safely. It has a simple structure and is safe, reliable and convenient to operate. After the elevator fault is eliminated, it can also ensure that the elevator returns to a normal state of use without affecting the normal operation of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 The structure of the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 The interlocking relationship of the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 4 The interlocking relationship of the embodiment of the present invention is shown in FIG. Figure 2 ; Figure 5 It is a cross-sectional structural diagram of a lock release device according to an embodiment of the present invention. DETAILED DESCRIPTION
[0007] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, it includes an anti-falling and anti-collision mechanism 1, a leveling limit mechanism 2, a lock-release slow-descent mechanism 3 and a door unlocking mechanism 4: The anti-falling and anti-impact mechanism 1 includes a pulling rope 11, a pulling spring 12, a rope tightener 13 and an elevator rope gripper 5. The pulling rope 11 is vertically arranged in the elevator shaft. The lower end of the pulling rope 11 is connected to the bottom of the elevator shaft, and the upper end is connected to the upper part of the elevator shaft through the pulling spring 12. The pulling rope 11 is connected to the elevator rope gripper 5 below the pulling spring 12. The rope tightener 13 is located outside the car 6 and is hinged on the outer wall of the car 6. The rope tightener 13 is provided with rope tightening grooves respectively located on both sides of the pulling rope 11. At a position deviating from the hinge shaft on the rope tightener 13, there is a rope tightening handle 14 with one end connected to the rope tightener 13 and the other end extending into the car 6 for turning the rope tightener 13 to pull down the pulling rope 11; The leveling limit mechanism 2 includes a car stop block 21 and several leveling blocks 22. The car stop block 21 is movably installed on the car 6, extends out to cooperate with the leveling blocks 22, and retracts to avoid the leveling blocks 22. Each leveling block 22 is installed at a position on the side wall of the elevator shaft on different floors to cooperate with the car stop block 21; The locking, releasing and slow-down mechanism 3 includes a locking and releasing device 31 and a slow-down device 32. The locking and releasing device 31 includes an upper connecting body 33 and a lower connecting body 34 that are engaged and separated. The slow-down device 32 is composed of a housing 35 and a telescopic rod 36 slidably installed on the housing 35. The upper connecting body 33 of the locking and releasing device 31 is connected to the car lifting pulley 61, and the lower connecting body 34 is connected to the car 6. The end of the telescopic rod 36 of the slow-down device 32 facing upward is connected to the car lifting pulley 61, and the housing 35 of the slow-down device 32 is fixedly connected to the car 6. On the lower connecting body 34 of the locking and releasing device 31, there is a release handle 37 extending into the car 6 for controlling the separation of the upper connecting body 33 and the lower connecting body 34 of the locking and releasing device 31; The door unlocking mechanism 4 includes an unlocking cable 41 and a cable pulling device 42. The unlocking cable 41 is composed of a cable sheath 43 and a cable 44 located inside the cable sheath 43. One end of the cable sheath 43 and the cable 44 of the unlocking cable 41 are connected to the cable pulling device 42, and the other end of the cable sheath 43 is connected to a door knife 62 of the car 6, and the cable 44 is connected to another door knife 62 of the car 6.
[0008] The pulling rope 11 is a steel wire rope, and the upper end of the pulling rope 11 is connected to the trigger rod 51 of the elevator rope gripper 5.
[0009] The rope tightener 13 is composed of a rope tightening frame 15, a large pulley 16, a small pulley 17 and a rope tightening handle 14. The pulley grooves of the large pulley 16 and the small pulley 17 form the rope tightening grooves of the rope tightener 13. The two pulleys are respectively located on both sides of the pulling rope 11 and the pulley grooves face the pulling rope 11 relatively. The large pulley 16 is rotatably installed in the middle of the rope tightening frame 15 on the rope tightening frame 15, the small pulley 17 is rotatably installed at one end of the rope tightening frame 15, the rope tightening handle 14 is installed at the other end of the rope tightening frame 15, and the rope tightening frame 15 is hinged to the car 6 at the rotating shaft position of the large pulley 16.
[0010] On the side wall of the car 6 at a position corresponding to the tight rope handle 14, an arc-shaped hole 63 centered on the axis of the hinge of the tight rope frame 15 is provided, so that the tight rope handle 14 can swing back and forth to pull down or release the pull rope 11.
[0011] As Figure 3 shown, the car stop block 21 is composed of a block seat 23 and a block body 24. The block seat 23 is fixedly installed on the car 6. The block body 24 is slidably installed on the block seat 23 in the horizontal direction. One end of the block body 24 extending outside the car 6 cooperates with the leveling stop block 22. One end located inside the car 6 is horizontally provided with a push-pull handle 25; between the block body 24 and the tightener 13, there is an interlock pull rope 26 with one end connected to a position deviating from the hinge axis of the tightener 13 and the other end connected to the block body 24, which is used to pull the block body 24 outwards. A reversing pulley 27 cooperating with the interlock pull rope 26 is rotatably installed on the block seat 23.
[0012] The pull wire device 42 is a rod-shaped body hinged on the block body 24. One end of the pull wire device 42 faces the outside direction of the car 6 and protrudes below the block body 24, and the other end faces the inside of the car 6 and is connected to the wire 44 of the unlocking wire 41. The wire sleeve 43 of the unlocking wire 41 is fixedly connected to the upper wall of the block body 24.
[0013] A drag reduction wheel 45 cooperating with the leveling stop block 22 is rotatably installed at the end of the pull wire device 42 protruding below the block body 24. A notch cooperating with the drag reduction wheel 45 is provided on the lower side of one end of the block seat 23 facing the outside of the car 6, so that the drag reduction wheel 45 can retract into the block seat 23 along with the block body 24.
[0014] As Figure 4 shown, the car stop block 21 is composed of a block sleeve 46 and a block column 47. The block sleeve 46 is fixedly installed on the car 6. The block column 47 is slidably installed on the block sleeve 46 in the vertical direction and is rotationally matched with the block sleeve 46. The lower end of the block column 47 is provided with a block foot 48 that can rotate outside the car 6 to cooperate with the leveling stop block 22. A block compression spring 49 with the upper end cooperating with the block sleeve 46 and the lower end cooperating with the block foot 48 is sleeved on the block column 47. A reset handle 52 located inside the car 6 is provided on the block column 47; between the block column 47 and the tightener 13, there is an interlock pull rope 26 with one end connected to a position deviating from the hinge axis of the tightener 13 and the other end connected to the block column 47, which is used to pull the block column 47 to rotate so that the block foot 48 rotates outside the car. A reversing pulley 27 cooperating with the interlock pull rope 26 is rotatably installed on the car 6 or the block sleeve 46.
[0015] The pull wire device 42 is composed of a block sleeve 46 and a block column 47. The wire 44 of the unlocking wire 41 is connected to the block sleeve 46, and the wire sleeve 43 is fixedly connected to the block column 47. When the block column 47 slides upwards in the block sleeve 46, the door knife 62 is pulled and closed through the unlocking wire 41.
[0016] As shown Figure 5 in FIG. 3, the lock release device 31 is composed of an upper connecting body 33, a lower connecting body 34, a release handle 37, a control sleeve 38, a compression spring 39 and steel balls 40. The lower half of the upper connecting body 33 is sleeved inside the upper half of the lower connecting body 34 and is in vertical sliding fit with the lower connecting body 34. The control sleeve 38 is sleeved outside the lower connecting body 34 and is in vertical sliding fit with the lower connecting body 34. The compression spring 39 is sleeved outside the lower connecting body 34, with its upper end cooperating with the control sleeve 38 and its lower end cooperating with the lower connecting body 34. A plurality of steel ball holes 341 are circumferentially provided on the side wall of the lower connecting body 34 at the position where it is sleeved and cooperates with the upper connecting body 33. A circle of locking grooves 331 corresponding to each steel ball hole 341 is circumferentially provided on the outer wall of the upper connecting body 33. Most of the steel balls 40 are located in the steel ball holes 341 and a small part is located in the locking grooves 331. A circle of release grooves 381 is circumferentially provided on the inner wall of the control sleeve 38 at the position above the steel ball holes 341.
[0017] An inner flange 382 whose inner wall is in axial sliding fit with the outer wall of the upper connecting body 33 is provided on the inner wall of the upper end portion of the control sleeve 38. The lower end face of the inner flange 382 cooperates with the upper end face of the lower connecting body 34 to limit the control sleeve 38 downward. A compression spring groove 383 cooperating with the compression spring 39 is provided at the lower end of the control sleeve 38. The inner end face of the compression spring groove 383 facing downward cooperates with the upper end face of the compression spring 39.
[0018] An upper flange 332 is provided at the upper end portion of the upper connecting body 33, and a lower flange 342 is provided at the lower end portion of the lower connecting body 34. The lower end face of the compression spring 39 cooperates with the upper end face of the lower flange 342 facing upward. A plurality of bolt holes are respectively circumferentially provided on the upper flange 332 and the lower flange 342.
[0019] An outer flange 384 cooperating with the handle rod of the release handle 37 is circumferentially provided on the outer wall of the lower end portion of the control sleeve 38. A handle rod hole cooperating with the handle rod of the release handle 37 is provided on the lower flange 342.
[0020] The release handle 37 is composed of a handle and a U-shaped handle rod. The handle is located inside the car 6 and is installed in the middle of the handle rod. Both ends of the handle rod pass upward through the top wall of the car 6 and are connected to the control sleeve 38.
[0021] As shown Figure 2 in FIG. 4, the lock release and slow descent mechanism 3 is composed of a lock release device 31, a cross beam 50 and two slow descent devices 32. The middle part of the cross beam 50 is connected upward to the car lifting movable pulley 61 and downward to the upper connecting body 33 of the lock release device 31. The lower connecting body 34 of the lock release device 31 is connected to the car 6. Both ends of the cross beam 50 are respectively connected to the end portions of the telescopic rods 36 facing upward of each slow descent device 32. The housings 35 of each slow descent device 32 are respectively fixedly connected to the car 6.
[0022] The descender 32 is composed of a housing 35, a telescopic rod 36, a piston 321 and a reset long tension spring 322. The piston 321 is axially slidably engaged with the inner and outer walls of the housing 35 and the inner wall of the housing 35. The lower end of the telescopic rod 36 extends into the housing 35 and is connected to the piston 321. The outer wall of the telescopic rod 36 is axially slidably and sealingly engaged with the inner wall of the upper end of the housing 35. The sealed cavity of the housing 35 is filled with hydraulic oil 323. A plurality of oil holes 324 are axially provided on the piston 321 on the outer periphery of the lower end of the telescopic rod 36. The telescopic rod 36 is a hollow rod with an open end downward connected to the piston 321. The reset long tension spring 322 is arranged in the central hole of the telescopic rod 36, with the upper end connected to the upper end of the telescopic rod 36 and the lower end connected to the lower end of the housing 35.
[0023] Principle of use: When a fault occurs in the elevator, the position of the car 6 stopped in the elevator shaft is uncertain. First, it is necessary to ensure that the car 6 will not suddenly rise or fall at this position. At this time, the trapped people in the car 6 need to pull down the tightening handle 14 on the rope tightener 13 of the anti-falling and anti-impact mechanism 1 in the car 6, so that the small pulley 17 end of the rope tightener 13 swings upward, and the pulling rope 11 will be tensioned by the large pulley 16 and the small pulley 17, causing the pulling rope 11 to pull down the trigger rod 51 to make the elevator rope gripper 5 act, hold the elevator hoisting wire rope, lock the car 6 so that it will not descend, and the interlock switch on the elevator rope gripper 5 can cut off the safety circuit of the elevator at the same time, making the elevator traction machine unable to start again to prevent driving the car to rise. When the rope tightener 13 is pulled, the locking block body 24 of the stop car block 21 will be pulled out through the interlock pulling rope 26 and cooperate with the flat layer stop block 22, so that the car 6 can stop at the flat layer position when descending slowly. Or when the rope tightener 13 is pulled, the locking block column 47 will be pulled to rotate through the interlock pulling rope 26, so that the locking feet 48 at the lower end of the locking block column 47 rotate outside the car 6 and cooperate with the flat layer stop block 22, so that the car 6 can stop at the flat layer position when descending slowly.
[0024] The next step is to slowly lower the car 6. The trapped people in the car 6 pull down the release handle 37 of the lock release descender mechanism 3, and pull down the control sleeve 38 to the position where the release groove 381 on the control sleeve 38 corresponds to each steel ball hole 341 on the lower connecting body 34. Due to the downward pulling effect of the gravity of the car 6 between the upper connecting body 33 and the lower connecting body 34, the steel balls 40 will be extruded out of the locking groove 331 and enter the release groove 381, disconnecting the upper connecting body 33 and the lower connecting body 34. Subsequently, the car 6 automatically descends by stretching the descender 32 under the action of gravity. The hydraulic oil 323 above the piston 321 in the housing 35 of the descender 32 will enter the sealed cavity below the piston 321 through each oil hole 324, which can delay the descending speed of the car 6 and play a role in slow descent.
[0025] During the process of the car 6 slowly descending until the resistance-reducing wheel 45 on the clamping block body 24 contacts the leveling stop block 22, the brake wire puller 42 is pressed and swings. The other end of the brake wire puller 42 pulls the two door knives 62 of the car 6 closer together through the unlocking brake wire 41, unlocking the car door and the landing door. After the car 6 descends to the point where the clamping block body 24 contacts the leveling stop block 22, the clamping block body 24 is blocked by the leveling stop block 22, and the slow descent of the car 6 ends.
[0026] Or when the clamping foot 48 at the lower end of the clamping block column 47 of the car 6 begins to contact the leveling stop block 22 during the slow descent, the clamping block column 47 compresses the clamping block compression spring 49 and retracts upward. The relative movement between the clamping block sleeve 46 and the clamping block column 47 will tighten the brake wire 44, causing the other end of the unlocking brake wire 41 to pull the two door knives 62 of the car 6 closer together, unlocking the car door and the landing door. When the clamping block compression spring 49 is compressed to the bottom and the clamping block sleeve 46 is blocked by the clamping block compression spring 49, the clamping block column 47, and the leveling stop block 22, the slow descent of the car 6 ends. At this time, the car 6 just descends to the leveling position. Since the car door and the landing door have been unlocked, the trapped person can push open the car door and the landing door and get out of the car to achieve safe escape.
[0027] After the elevator fault is eliminated, the reset long pull spring 322 will pull the telescopic rod 36 of the slow descender 32 to retract until the lower end of the upper connecting body 33 of the lock release 31 is inserted into the lower connecting body 34 and abuts against the steel ball 40 protruding from the inner wall of the lower connecting body 34. At this time, manually pull down the release handle 37 to make the control sleeve 38 descend to the position where the release groove 381 corresponds to the steel ball hole 341. The steel ball 40 is squeezed into the release groove 381 by the upper connecting body 33 and no longer hinders the retraction of the telescopic rod 36. The upper connecting body 33 continues to descend to the position where the locking groove 331 corresponds to the steel ball hole 341. At this time, release the release handle 37. Under the elastic force of the compression spring 39, the control sleeve 38 rebounds, squeezing the steel ball 40 out of the release groove 381 and into the locking groove 331 to lock the steel ball 40, connecting the upper connecting body 33 and the lower connecting body 34 together, and the lock release 31 resumes the connected state, connecting the car lifting pulley 61 to the car 6.
Claims
1. The self-rescue system for people trapped in elevators is characterized by: It comprises an anti-falling and anti-collision mechanism (1), a leveling limit mechanism (2), a lock-release slow-descent mechanism (3) and a door unlocking mechanism (4): The anti-fall and anti-collision mechanism (1) comprises a pull rope (11), a tension spring (12), a rope tightener (13) and an elevator rope clamp (5). The pull rope (11) is vertically arranged in the elevator shaft. The lower end of the pull rope (11) is connected to the bottom of the elevator shaft, and the upper end is connected to the upper part of the elevator shaft through the tension spring (12). The pull rope (11) is connected to the elevator rope clamp (5) below the tension spring (12). The rope tightener (13) is located outside the car (6) and is hinged on the outer wall of the car (6). The rope tightener (13) is provided with rope tightening grooves respectively located on both sides of the pull rope (11). A rope tightening handle (14) is provided on the rope tightener (13) at a position deviating from the hinge axis, the handle having one end connected to the rope tightener (13) and the other end extending into the car (6) and used for turning the rope tightener (13) to pull down the pull rope (11). The leveling limit mechanism (2) comprises a car stop block (21) and a plurality of leveling blocks (22); the car stop block (21) is movably mounted on the car (6), extends outward to cooperate with the leveling block (22), and retracts to avoid the leveling block (22); each leveling block (22) is respectively mounted on the side wall of the elevator shaft at different floors at a position that cooperates with the car stop block (21); The lock-release and slow-descent mechanism (3) comprises a lock release (31) and a slow-descent device (32). The lock release (31) comprises an upper connecting body (33) and a lower connecting body (34) which are engaged and disengaged with each other. The slow-descent device (32) comprises a shell (35) and a telescopic rod (36) slidably mounted on the shell (35). The upper connecting body (33) of the lock release (31) is connected to a car lifting and lowering movable pulley (61), and the lower connecting body (34) is connected to the car (6). The end of the telescopic rod (36) of the slow-descent device (32) facing upward is connected to the car lifting and lowering movable pulley (61). The shell (35) of the slow-descent device (32) is fixedly connected to the car (6). The lower connecting body (34) of the lock release (31) is provided with a release handle (37) which extends into the car (6) and is used to control the upper connecting body (33) and the lower connecting body (34) of the lock release (31) to separate from each other. The door unlocking mechanism (4) comprises an unlocking brake wire (41) and a brake wire puller (42). The unlocking brake wire (41) comprises a brake wire sleeve (43) and a brake wire (44) located in the brake wire sleeve (43). The brake wire sleeve (43) and the brake wire (44) at one end of the unlocking brake wire (41) are connected to the brake wire puller (42), and the brake wire sleeve (43) at the other end is connected to a door blade (62) of the car (6), and the brake wire (44) is connected to another door blade (62) of the car (6).
2. The self-rescue system for trapped elevator personnel according to claim 1, characterized in that The rope tightening device (13) is composed of a rope tightening frame (15), a large pulley (16), a small pulley (17) and a rope tightening handle (14). The wheel grooves of the large pulley (16) and the small pulley (17) constitute the rope tightening groove of the rope tightening device (13). The two pulleys are respectively located on both sides of the pull rope (11) and the wheel grooves are relatively facing the pull rope (11). The large pulley (16) is located in the middle of the rope tightening frame (15) and is rotatably mounted on the rope tightening frame (15). The small pulley (17) is rotatably mounted on one end of the rope tightening frame (15). The rope tightening handle (14) is mounted on the other end of the rope tightening frame (15). The rope tightening frame (15) is hinged to the car (6) at the position of the rotating shaft of the large pulley (16).
3. The self-rescue system for trapped elevator personnel according to claim 3, characterized in that An arc-shaped hole (63) centered on the hinge axis of the rope tightening frame (15) is provided on the side wall of the car (6) at a position corresponding to the rope tightening handle (14), so that the rope tightening handle (14) can swing back and forth to pull down or release the pull rope (11).
4. The self-rescue system for trapped elevator personnel according to claim 1, characterized in that The car stopping block (21) is composed of a block seat (23) and a block body (24). The block seat (23) is fixedly mounted on the car (6). The block body (24) is slidably mounted on the block seat (23) in a horizontal direction. One end of the block body (24) extending outside the car (6) cooperates with the leveling block (22), and one end located inside the car (6) is laterally provided with a push-pull handle (25). An interlocking rope (26) is provided between the block body (24) and the rope tightener (13). One end of the interlocking rope is connected to a position of the rope tightener (13) deviating from the hinge axis and the other end is connected to the block body (24). The rope is used to pull the block body (24) outward. A reversing pulley (27) cooperating with the interlocking rope (26) is rotatably mounted on the block seat (23).
5. The self-rescue system for trapped elevator personnel according to claim 4, characterized in that The brake wire puller (42) is a rod-shaped body hinged on the block body (24), one end of the brake wire puller (42) faces the outside of the car (6) and protrudes below the block body (24), and the other end faces the inside of the car (6) and is connected to the brake wire (44) of the unlocking brake wire (41), and the brake wire sleeve (43) of the unlocking brake wire (41) is fixedly connected to the upper wall of the block body (24).
6. The self-rescue system for trapped elevator personnel according to claim 1, characterized in that The car stopping block (21) is composed of a block sleeve (46) and a block column (47); the block sleeve (46) is fixedly mounted on the car (6); the block column (47) is slidably mounted on the block sleeve (46) in the vertical direction and is rotatably matched with the block sleeve (46); a clamping foot (48) is provided at the lower end of the block column (47) and can be rotated to the outside of the car (6) and matched with the leveling block (22); and a clamping foot (48) is provided on the block column (47) and the upper end of the clamping foot (48) is matched with the block sleeve (46) and the lower end of the clamping foot (48) is matched with the block sleeve (46). A block compression spring (49) is provided on the block column (47) and a reset handle (52) is provided inside the car (6); an interlocking rope (26) is provided between the block column (47) and the rope tightener (13), one end of which is connected to a position of the rope tightener (13) deviating from the hinge axis and the other end of which is connected to the block column (47) and is used to pull the block column (47) to rotate so that the clamping foot (48) rotates outside the car; a reversing pulley (27) that cooperates with the interlocking rope (26) is rotatably installed on the car (6) or the block sleeve (46).
7. The self-rescue system for trapped elevator personnel according to claim 6, characterized in that The brake wire pulling device (42) is composed of a block sleeve (46) and a block column (47). The brake wire (44) of the unlocking brake wire (41) is connected to the block sleeve (46), and the brake wire sleeve (43) is fixedly connected to the block column (47). When the block column (47) slides upward in the block sleeve (46), it pulls and closes the door knife (62) through the unlocking brake wire (41).
8. The self-rescue system for trapped elevator personnel according to claim 1, characterized in that The lock release device (31) is composed of an upper connecting body (33), a lower connecting body (34), a release handle (37), a control sleeve (38), a compression spring (39) and a steel ball (40). The lower half of the upper connecting body (33) is sleeved inside the upper half of the lower connecting body (34) and is slidably matched with the lower connecting body (34) up and down. The control sleeve (38) is sleeved outside the lower connecting body (34) and is slidably matched with the lower connecting body (34) up and down. The compression spring (39) is sleeved outside the lower connecting body (34) and its upper end is matched with the control sleeve (38). , the lower end is matched with the lower connecting body (34), a plurality of steel ball holes (341) are circumferentially provided on the side wall of the position where the lower connecting body (34) and the upper connecting body (33) are fitted together, a circle of locking grooves (331) corresponding to the steel ball holes (341) are circumferentially provided on the outer wall of the upper connecting body (33), most of the steel balls (40) are located in the steel ball holes (341), and a small part is located in the locking grooves (331), and a circle of release grooves (381) are circumferentially provided on the inner wall of the control sleeve (38) above the steel ball holes (341).
9. The self-rescue system for trapped elevator personnel according to claim 1, characterized in that The lock-release slow-descent mechanism (3) is composed of a lock release (31), a crossbeam (50) and two slow-descent devices (32). The middle part of the crossbeam (50) is connected to the elevator car lifting pulley (61) upwards and is connected to the upper connecting body (33) of the lock release (31) downwards. The lower connecting body (34) of the lock release (31) is connected to the car (6). The two ends of the crossbeam (50) are respectively connected to the ends of the telescopic rods (36) of each slow-descent device (32) facing upwards. The shells (35) of each slow-descent device (32) are respectively fixedly connected to the car (6).
10. The self-rescue system for trapped elevator personnel according to claim 1, characterized in that The descending slow device (32) is composed of a housing (35), a telescopic rod (36), a piston (321) and a long return tension spring (322). The piston (321) is located in the housing (35), and its outer wall is axially slidably matched with the inner wall of the housing (35). The lower end of the telescopic rod (36) extends into the housing (35) and is connected to the piston (321). The outer wall of the telescopic rod (36) is axially slidably sealed with the inner wall of the upper end of the housing (35). The sealing cavity of the housing (35) is filled with hydraulic oil (323). A plurality of oil holes (324) are axially provided on the piston (321) at the outer periphery of the lower end of the telescopic rod (36). The telescopic rod (36) is a hollow rod with one end connected to the piston (321) and opening downward. The long return tension spring (322) is arranged in the center hole of the telescopic rod (36), with its upper end connected to the upper end of the telescopic rod (36) and its lower end connected to the lower end of the housing (35).