An elevator protection device

Abstract

The application relates to an elevator protection device, which comprises an elevator car, a guide rail, a roller, a first fixing base, a first rotating shaft, a transmission assembly, a clutch assembly, a driving shaft, a connecting sleeve and a brake assembly, the guide rail is installed on one side of the elevator car, the first fixing base is fixed on the top of the elevator car, the first rotating shaft is rotatably installed on the first fixing base, the first rotating shaft penetrates through the roller, and the roller is matched in the guide rail; the clutch assembly is arranged on one side of the first rotating shaft at intervals, the transmission assembly is connected between the clutch assembly and the first rotating shaft, the driving shaft is fixed on the output end of the clutch assembly, and the front end of the connecting sleeve is threadedly connected with the rear end of the driving shaft; the brake assembly comprises a rotating base, a guide rod, a brake lever, a pull rope, an extension bolt assembly and a brake pad assembly. After the scheme is adopted, detection and transmission of electric signals are not involved, and only mechanical structures are relied on to brake the elevator car, so that the stability and reliability are improved.

Description

Technical Field

[0001] This invention relates to an elevator protection device. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building, with its car moving between at least two rigid guide rails perpendicular to the horizontal plane or at an angle of inclination less than 15° to the vertical. There are also escalators, where steps are mounted on a continuous track and run continuously; these are commonly known as moving walkways or automatic stairs. They are fixed lifting devices serving designated floors. A vertical elevator has a car that runs between at least two rigid guide rails that are vertical or at an angle of inclination less than 15°. The size and structure of the car facilitate passenger entry and exit or loading and unloading of goods. Conventionally, regardless of its drive method, elevator is used as a general term for vertical transportation tools within a building.

[0003] Elevators inevitably experience malfunctions during long-term use, sometimes leading to the elevator car falling and causing serious consequences. To prevent elevator cars from falling after a malfunction, fall arrest devices are usually installed in elevators. However, existing elevator fall arrest devices typically involve various signal detection and signal transmission control devices, all of which involve electrical signals. If the circuit fails or the electrical signal transmission is interfered with, the fall arrest device cannot operate normally, resulting in poor stability and reliability. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an elevator protection device that does not involve the detection and transmission of electrical signals, but relies solely on mechanical structure to brake the elevator car, thereby improving stability and reliability.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0006] An elevator protection device includes: an elevator car, a guide rail, rollers, a first fixed seat, a first rotating shaft, a transmission assembly, a clutch assembly, a drive shaft, a connecting sleeve, and a brake assembly. The guide rail is mounted on one side of the elevator car. The first fixed seat is fixed to the top of the elevator car. The first rotating shaft is rotatably mounted on the first fixed seat, passes through the rollers, and is fixedly connected to the rollers. The rollers rotate within the guide rail as the elevator car moves up and down. The clutch assembly is mounted on the elevator car and is spaced apart on one side of the first rotating shaft. The transmission assembly connects the clutch assembly and the first rotating shaft. The drive shaft is fixed to the output end of the clutch assembly. The connecting sleeve is slidably mounted on the elevator car. The front end and the rear end of the drive shaft are threaded together; the brake assembly includes a rotating seat, a guide rod, a brake lever, a pull rope, a telescopic pin assembly, and a brake pad assembly. The middle part of the rotating seat is sleeved on the guide rod, and a connecting rod is provided in the middle part of the rotating seat. The connecting rod is rotatably connected to the elevator car. The telescopic pin assembly is installed in the middle of the rotating seat and is located on one side of the guide rod. The two ends of the pull rope are respectively connected to the telescopic pin assembly and the connecting sleeve. A guide groove is provided on the guide rod. Two sets of brake pad assemblies are provided. The two sets of brake pad assemblies are respectively fixed to the front left end and the rear right end of the rotating seat. Two brake levers are provided. The two brake levers and the two brake pad assemblies are arranged in a one-to-one correspondence. The brake levers are located on the movement trajectory of the brake pad assemblies.

[0007] Preferably, the telescopic pin assembly includes a pin and a first elastic element, and the brake assembly further includes a second elastic element. Multiple guide grooves are arranged at equal intervals from top to bottom, extending vertically from the top and then curving around the side of the brake lever. A mounting groove is provided inside the rotating seat, with its opening facing the guide rod. A through hole is provided at the other end of the mounting groove. The pin and the first elastic element are both installed in the mounting groove. Both ends of the pull rope are connected to the pin and the connecting sleeve, respectively. The pin is held in the mounting groove by overcoming the elastic force of the first elastic element under the action of the pull rope. A connecting plate is provided on the side of the elevator car, with a strip-shaped hole on the connecting plate. The connecting rod is inserted into the strip-shaped hole. Two second elastic elements are provided, cooperating within the strip-shaped hole, and located on opposite sides of the connecting rod.

[0008] Preferably, it further includes a guide wheel and a guide seat, the connecting sleeve is fitted inside the guide seat, the guide wheel is located behind the guide seat, the guide wheel is rotatably connected to the elevator car, and the pull rope is wound around the guide wheel.

[0009] Preferably, the brake pad assembly includes a brake pad mounting base, a third elastic element, and a brake pad. The brake pad mounting base is fixed to the end of the rotating seat, and the brake pad is laterally slidably mounted on the brake pad mounting base. The third elastic element is disposed between the brake pad and the brake pad mounting base, and both ends of the third elastic element are respectively connected to the brake pad and the brake pad mounting base.

[0010] Preferably, the clutch assembly includes a second fixed seat, a second rotating shaft, and a clutch. The second fixed seats are spaced apart on one side of the first fixed seat, and there are two second fixed seats. The clutch is disposed between the two second fixed seats. The second rotating shaft and the drive shaft are respectively fixed to the input end and output end of the clutch, and both the second rotating shaft and the drive shaft are rotatably connected to the two second fixed seats. The transmission assembly is connected between the first rotating shaft and the second rotating shaft. The transmission assembly includes a transmission wheel and a transmission belt. There are two transmission wheels, and the two transmission wheels are respectively fixed on the first rotating shaft and the second rotating shaft. The transmission belt is engaged with the two transmission wheels.

[0011] Preferably, the clutch includes a base, an end cover, a fourth elastic element, and clutch blocks. The end cover and the base are rotatably connected. The second rotating shaft and the base are fixedly connected. The drive shaft and the end cover are fixedly connected. The base has two sliding grooves spaced apart. There are two clutch blocks, each slidingly engaged in the sliding groove. The fourth elastic element is disposed between the two clutch blocks, with its two ends connected to the two clutch blocks respectively. The inner wall of the end cover has a locking block. When the base rotates faster, the clutch block slides outward to one side of the locking block, causing the clutch block to rotate, which in turn causes the end cover to rotate.

[0012] The beneficial effects of this invention are as follows: When the wire rope breaks or the elevator falls due to other reasons, the descent of the elevator car will accelerate, thus increasing the rotational speed of the rollers, which in turn increases the rotational speed of the first rotating shaft. Under the transmission action of the transmission assembly, the rotational speed of the clutch assembly increases, causing the locking mechanism between the front and rear parts of the clutch assembly to rotate the drive shaft. Since the drive shaft and the connecting sleeve are threadedly connected, and the connecting sleeve is slidably mounted on the elevator car, the rotation of the drive shaft causes the connecting sleeve to slide forward until the drive shaft and the connecting sleeve separate. At this point, the telescopic pin assembly loses its function. The pull rope extends and inserts into the guide groove on the guide rod, causing the rotating seat to rotate. This causes the brake pad assembly to press against the brake rod, and the friction force causes the rotating seat to stop sliding down. Since the rotating seat and the elevator car are connected by a linkage, the elevator car also stops falling. In this way, the entire braking process does not involve the detection and transmission of any electrical signals. It only relies on the mechanical structure to brake the elevator car, which improves stability and reliability. As soon as the elevator car starts to fall, the falling speed of the elevator car will increase, thereby gradually activating the braking assembly until the elevator car stops falling. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the elevator protection device described in this invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of an embodiment of the elevator protection device described in this invention. Figure 2 .

[0016] Figure 3 This is a partial structural diagram of an embodiment of the elevator protection device described in this invention.

[0017] Figure 4 This is an exploded view of the clutch in the embodiment.

[0018] Figure 5 This is a schematic diagram of the end cap structure in the embodiment.

[0019] Figure 6 This is a schematic diagram of the brake assembly in the embodiment.

[0020] Figure 7 This is a schematic diagram of the connecting plate in the embodiment.

[0021] Figure 8 This is a schematic diagram of the brake pad assembly in the embodiment.

[0022] Figure 9 This is a cross-sectional view of the rotating seat, pin, first elastic element, and pull rope in the embodiment.

[0023] Figure 10 This is a schematic diagram of the rotating seat in the embodiment.

[0024] Figure 11 This is a schematic diagram of the rotating seat and pull rope in the embodiment.

[0025] Figure 12 This is a schematic diagram of the guide rod in the embodiment.

[0026] in:

[0027] 1. Elevator car.

[0028] 2. Guide rail.

[0029] 3. Rollers.

[0030] 4. First fixed seat.

[0031] 5. First rotating shaft.

[0032] 6. Transmission components; 61. Transmission wheel; 62. Transmission belt.

[0033] 7. Clutch assembly; 71. Second fixed seat; 72. Second rotating shaft; 73. Base; 731. Slide groove; 74. End cover; 741. Locking block; 75. Fourth elastic element; 76. Clutch block.

[0034] 8. Drive shaft.

[0035] 9. Connecting sleeve.

[0036] 10. Rotating seat; 101. Connecting rod; 102. Mounting groove; 1021. Through hole.

[0037] 11. Guide rod; 111. Guide groove.

[0038] 12. Brake lever.

[0039] 13. Pull the rope.

[0040] 14. Brake pad assembly; 141. Brake pad mounting bracket; 142. Third elastic element; 143. Brake pad.

[0041] 15. Plugging pin.

[0042] 16. First elastic element.

[0043] 17. Second elastic element.

[0044] 18. Connecting plate; 181. Strip hole.

[0045] 19. Guide wheel.

[0046] 20. Guide seat. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0048] In the description of this invention, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0049] like Figures 1 to 12 As shown,

[0050] An elevator protection device includes: an elevator car 1, a guide rail 2, rollers 3, a first fixed seat 4, a first rotating shaft 5, a transmission assembly 6, a clutch assembly 7, a drive shaft 8, a connecting sleeve 9, and a brake assembly. The guide rail 2 is installed on one side of the elevator car 1. The first fixed seat 4 is fixed to the top of the elevator car 1. The first rotating shaft 5 is rotatably installed on the first fixed seat 4. The first rotating shaft 5 passes through the rollers 3, and the rollers 3 and the first rotating shaft 5 are fixedly connected. The rollers 3 are engaged within the guide rail 2 and roll as the elevator car 1 rises and falls. The clutch assembly 7 is installed on the elevator car 1 and is spaced apart on one side of the first rotating shaft 5. The transmission assembly 6 is connected between the clutch assembly 7 and the first rotating shaft 5. The drive shaft 8 is fixed to the output end of the clutch assembly 7. The connecting sleeve 9 is slidably installed on the elevator car 1, and the front end of the connecting sleeve 9 is threadedly connected to the rear end of the drive shaft 8. The front end of the connecting sleeve 9 is provided with a threaded hole. The rear end of the drive shaft 8 is provided with a thread that mates with the threaded hole; the brake assembly includes a rotating seat 10, a guide rod 11, a brake lever 12, a pull rope 13, a telescopic pin assembly, and a brake pad assembly 14. The middle part of the rotating seat 10 is sleeved on the guide rod 11, and a connecting rod 101 is provided in the middle part of the rotating seat 10. The connecting rod 101 is rotatably connected to the elevator car 1. The telescopic pin assembly is installed in the middle of the rotating seat 10 and is located on one side of the guide rod 11. The two ends of the pull rope 13 are respectively connected to the telescopic pin assembly and the connecting sleeve 9. A guide groove 111 is provided on the guide rod 11; two sets of brake pad assemblies 14 are provided, and the two sets of brake pad assemblies 14 are respectively fixed to the front left end and the rear right end of the rotating seat 10; two brake levers 12 are provided, and the two brake levers 12 and the two brake pad assemblies 14 are arranged one-to-one. The brake levers 12 are located on the movement trajectory of the brake pad assemblies 14.

[0051] In this way, when the wire rope breaks or the elevator falls for other reasons, the descent of the elevator car 1 will accelerate, thus increasing the rotation speed of the roller 3, which in turn increases the rotation speed of the first rotating shaft 5. Under the transmission action of the transmission assembly 6, the rotation speed of the clutch assembly 7 increases, causing the locking piece between the front and rear parts of the clutch assembly 7 to rotate the drive shaft 8. Since the drive shaft 8 and the connecting sleeve 9 are threadedly connected, and the connecting sleeve 9 is slidably mounted on the elevator car 1, the rotation of the drive shaft 8 causes the connecting sleeve 9 to slide forward until the drive shaft 8 and the connecting sleeve 9 separate. At this point, the telescopic pin assembly loses the restraint of the pull rope 13. The rotating seat 10 extends and inserts into the guide groove 111 on the guide rod 11, causing the brake pad assembly 14 to press against the brake rod 12. The friction force causes the rotating seat 10 to stop sliding down. Since the rotating seat 10 and the elevator car 1 are connected by the connecting rod 101, the elevator car 1 also stops falling. In this way, the entire braking process does not involve the detection and transmission of any electrical signals. It only relies on the mechanical structure to brake the elevator car 1, which improves stability and reliability. As long as the elevator car 1 falls, the falling speed of the elevator car 1 will increase, thereby gradually activating the braking assembly until the elevator car 1 stops falling.

[0052] Other, such as Figure 6 — Figure 11 As shown, the telescopic pin assembly includes a pin 15 and a first elastic element 16, and the brake assembly also includes a second elastic element 17. Multiple guide grooves 111 are arranged at equal intervals from top to bottom, extending vertically from the top and then curving around the side of the brake lever 12. A mounting groove 102 is provided inside the rotating seat 10, with its opening facing the guide rod 11. A through hole 1021 is provided at the other end of the mounting groove 102. Both the pin 15 and the first elastic element 16 are mounted on the mounting groove 10. Inside the mounting groove 102, the two ends of the pull rope 13 are connected to the pin 15 and the connecting sleeve 9 respectively. Under the action of the pull rope 13, the pin 15 overcomes the elastic force of the first elastic element 16 and is held in the mounting groove 102. A connecting plate 18 is provided on the side of the elevator car 1. A strip hole 181 is provided on the connecting plate 18. The connecting rod 101 is inserted into the strip hole 181. Two second elastic elements 17 are provided. The two second elastic elements 17 are fitted into the strip hole 181, and the two second elastic elements 17 are located on both sides of the connecting rod 101 respectively.

[0053] In this way, when the connecting sleeve 9 and the drive shaft 8 separate, the connecting sleeve 9 falls off. Under the elastic force of the second elastic element 17, the pin 15 extends out from the mounting groove 102 and inserts into the guide groove 111, and slides continuously within the guide groove 111. Since the guide groove 111 extends vertically from the top and then bends around the side of the brake lever 12, as the pin 15 moves within the guide groove 111, the pin 15 will cause the rotating seat 10 to rotate until the elevator car 1 stops falling. At the same time, the second elastic element 17 can keep the connecting rod 101 in the middle position, so the pin 15 is always in the middle position. Since the upper end of the guide groove 111 initially extends vertically, when the pin 15 extends out from the mounting groove 102, it has enough time to align with the guide groove 111 and insert into it, thus avoiding the situation where the pin 15 cannot be inserted into the guide groove 111.

[0054] Other, such as Figure 3 As shown, it also includes a guide wheel 19 and a guide seat 20. The connecting sleeve 9 is fitted inside the guide seat 20. The guide wheel 19 is located behind the guide seat 20. The guide wheel 19 is rotatably connected to the elevator car 1. The pull rope 13 is wound around the guide wheel 19.

[0055] This ensures that the pull rope 13 and the connecting sleeve 9 remain in a horizontal position, allowing for smoother separation from the drive shaft 8.

[0056] Other, such as Figure 8 As shown, the brake pad assembly 14 includes a brake pad mounting base 141, a third elastic member 142, and a brake pad 143. The brake pad mounting base 141 is fixed to the end of the rotating base 10. The brake pad 143 is laterally slidably mounted on the brake pad mounting base 141. The third elastic member 142 is disposed between the brake pad 143 and the brake pad mounting base 141, and both ends of the third elastic member 142 are respectively connected to the brake pad 143 and the brake pad mounting base 141. Specifically, in order to realize the lateral sliding of the brake pad 143, a guide rod is provided on the brake pad 143. Both the brake pad mounting base 141 and the rotating base are provided with guide holes, and the guide rod is inserted into the guide holes.

[0057] In this way, the brake pad 143 first contacts the brake lever 12. As the rotating seat 10 continues to rotate, the brake pad 143 compresses the third elastic element 142. During this process, the pressure exerted by the brake pad 143 on the brake lever 12 increases continuously, so that the brake pad 143 can gradually complete the braking, instead of braking the elevator car 1 in an instant, thus preventing injury to the passengers inside the elevator car 1.

[0058] Other, such as Figure 3 — Figure 5As shown, the clutch assembly 7 includes a second fixed seat 71, a second rotating shaft 72, and a clutch. The second fixed seats 71 are spaced apart on one side of the first fixed seat 4, and there are two second fixed seats 71. The clutch is located between the two second fixed seats 71. The second rotating shaft 72 and the drive shaft 8 are respectively fixed to the input end and the output end of the clutch, and both the second rotating shaft 72 and the drive shaft 8 are rotatably connected to the two second fixed seats 71. The transmission assembly 6 is connected between the first rotating shaft 5 and the second rotating shaft 72. The transmission assembly 6 includes a transmission wheel 61 and a transmission belt 62. There are two transmission wheels 61, and the two transmission wheels 61 are respectively fixed on the first rotating shaft 5 and the second rotating shaft 72. The transmission belt 62 is engaged with the two transmission wheels 61.

[0059] In this way, the rotation of the first rotating shaft 5 drives the rotation of one of the transmission wheels 61. This transmission wheel 61 causes another transmission wheel 61 to rotate through the transmission belt, thereby driving the rotation of the second rotating shaft 72. The rotation of the second rotating shaft 72 drives the rotation of the clutch.

[0060] Additionally, the clutch includes a base 73, an end cover 74, a fourth elastic element 75, and a clutch block 76. The end cover 74 and the base 73 are rotatably connected, the second rotating shaft 72 is fixedly connected to the base 73, and the drive shaft 8 is fixedly connected to the end cover 74. The base 73 is provided with a sliding groove 731, with two sliding grooves 731 spaced apart. There are two clutch blocks 76, which are slidably engaged in the sliding grooves 731 respectively. The fourth elastic element 75 is disposed between the two clutch blocks 76, and its two ends are connected to the two clutch blocks 76 respectively. The inner wall of the end cover 74 is provided with a locking block 741. When the base 73 rotates faster, the clutch block 76 slides outward to one side of the locking block 741, and the clutch block 76 drives the locking block 741 to rotate, which in turn drives the end cover 74 to rotate.

[0061] In this way, when the elevator falls, the rotation speed of the second shaft 72 increases, and the rotation speed of the base 73 increases, causing the clutch block 76 to slide radially under the action of centrifugal force. This causes the clutch block 76 to engage with the locking block 741 inside the end cover 74, thereby driving the rotation of the end cover 74. The rotation of the end cover 74 drives the rotation of the drive shaft.

[0062] In summary, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elevator protection device, characterized in that Include: The elevator car, guide rail, roller, first fixed seat, first rotating shaft, transmission assembly, clutch assembly, drive shaft, connecting sleeve and brake assembly, the guide rail is installed on one side of the elevator car, the first fixed seat is fixed on the top of the elevator car, the first rotating shaft is rotatably installed on the first fixed seat, the first rotating shaft passes through the roller, and the roller and the first rotating shaft are fixedly connected, the roller is matched in the guide rail and rolls with the lifting of the elevator car; The clutch assembly is installed on the elevator car, and the clutch assembly is arranged on one side of the first rotating shaft, the transmission assembly is connected between the clutch assembly and the first rotating shaft, the drive shaft is fixed on the output end of the clutch assembly, the connecting sleeve is slidably installed on the elevator car, and the front end of the connecting sleeve is threadedly connected with the rear end of the drive shaft; The brake assembly comprises a rotating seat, a guide rod, a brake lever, a pull rope, a telescopic bolt assembly and a brake pad assembly, the middle part of the rotating seat is sleeved on the guide rod, and the middle part of the rotating seat is provided with a connecting rod, the connecting rod is rotatably connected with the elevator car, the telescopic bolt assembly is installed on the middle part of the rotating seat and located on one side of the guide rod, the two ends of the pull rope are connected with the telescopic bolt assembly and the connecting sleeve respectively, and the guide rod is provided with a guide groove; The brake pad assembly is provided with two groups, and two groups of the brake pad assembly are fixed on the left side of the front end of the rotating seat and the right side of the rear end of the rotating seat respectively; The brake lever is provided with two, and two brake levers and two brake pad assemblies are arranged one by one, and the brake lever is located on the movement track of the brake pad assembly.

2. Elevator protection arrangement according to claim 1, characterized in that The telescopic bolt assembly comprises a bolt and a first elastic member, the brake assembly further comprises a second elastic member, the guide grooves are sequentially and equidistantly arranged from top to bottom, the guide grooves extend in the vertical direction from the upper end, and then bend and extend around the side of the brake lever; The rotating seat is provided with a mounting groove, the opening end of the mounting groove faces the guide rod, the other end of the mounting groove is provided with a through hole, the bolt and the first elastic member are installed in the mounting groove, the two ends of the pull rope are connected with the bolt and the connecting sleeve respectively, and the bolt is kept in the mounting groove against the elastic force of the first elastic member under the action of the pull rope; The side of the elevator car is provided with a connecting plate, the connecting plate is provided with a strip-shaped hole, the connecting rod is inserted into the strip-shaped hole, the second elastic member is provided with two, two second elastic members are matched in the strip-shaped hole, and two second elastic members are located on the two sides of the connecting rod respectively.

3. Elevator protection arrangement according to claim 2, characterized in that Further include a guide wheel and a guide seat, the connecting sleeve is matched in the guide seat, the guide wheel is located behind the guide seat, the guide wheel is rotatably connected with the elevator car, and the pull rope is wound on the guide wheel.

4. Elevator protection arrangement according to claim 2, characterized in that The brake pad assembly comprises a brake pad fixing seat, a third elastic member and a brake pad, the brake pad fixing seat is fixed at the end of the rotating seat, the brake pad is transversely slidably installed on the brake pad fixing seat, the third elastic member is arranged between the brake pad and the brake pad fixing seat, and the two ends of the third elastic member are connected with the brake pad and the brake pad fixing seat respectively.

5. Elevator protection arrangement according to any of claims 1 - 4, characterized in that The clutch assembly comprises a second fixing seat, a second rotating shaft and a clutch, the second fixing seat is arranged on one side of the first fixing seat, two second fixing seats are arranged at intervals, the clutch is arranged between the two second fixing seats, the second rotating shaft is fixed at the input end and the output end of the clutch respectively, and the second rotating shaft and the driving shaft are rotatably connected with the two second fixing seats respectively; the transmission assembly is connected between the first rotating shaft and the second rotating shaft; the transmission assembly comprises a transmission wheel and a transmission belt, two transmission wheels are arranged, and the two transmission wheels are fixed on the first rotating shaft and the second rotating shaft respectively, and the transmission belt is matched on the two transmission wheels.

6. Elevator protection arrangement according to claim 5, characterized in that The clutch comprises a base, an end cover, a fourth elastic member and a clutch block, the end cover and the base are rotatably connected, the second rotating shaft and the base are fixedly connected, the driving shaft and the end cover are fixedly connected, a sliding groove is arranged in the base, the sliding groove is arranged at intervals, the clutch block is arranged in two, the two clutch blocks are slidably matched in the sliding groove, the fourth elastic member is arranged between the two clutch blocks, and the two ends of the fourth elastic member are connected with the two clutch blocks respectively; the inner wall of the end cover is provided with a clamping block, the base rotates at a high speed, the clutch block slides outward to one side of the clamping block, the clutch block drives the clamping block to rotate, and the clamping block drives the end cover to rotate.

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