Elevator fall arrest protection device
Through a multi-component collaborative mechanical structure design, the problem of poor buffering effect of traditional elevator buffer devices has been solved, achieving rapid response and efficient energy absorption, thus improving the safety and economy of elevators during a fall.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU FEINAI TECH CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-21
AI Technical Summary
传统电梯缓冲装置在面对快速坠落时缓冲效果有限，液压缓冲器结构复杂且成本高，响应速度慢，无法提供持续、稳定且可靠的缓冲保护。
It adopts a multi-component collaborative mechanical structure design, including transmission components, limiting components, and abutment components. Through the linkage of components such as ratchet, connecting spring, limiting spring, and disc spring, it can quickly absorb and disperse falling energy to achieve efficient buffering.
It achieves rapid response, effectively absorbs the energy of an elevator fall, reduces impact damage, improves safety, and reduces operation and maintenance costs.
Smart Images
Figure CN224530369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of elevator fall buffer protection devices, and in particular to an elevator fall buffer protection device. Background Technology
[0002] Elevator falls pose a serious threat to passenger safety during operation. When an elevator falls due to traction machine failure, wire rope breakage, or other malfunctions, the lack of an effective cushioning protection device can result in significant personal injury and equipment damage. Traditional elevator cushioning devices, such as spring buffers, have limited cushioning effect when facing a rapidly falling elevator and are unable to effectively absorb the enormous impact energy. While hydraulic buffers offer relatively better cushioning performance, they are complex in structure, expensive, and difficult to maintain. Some buffering devices also have slow response times and cannot intervene in time during the initial stages of an elevator fall, failing to provide continuous, stable, and reliable cushioning protection. Therefore, there is an urgent need to develop an elevator fall protection device with a reasonable structure, rapid response, and good cushioning effect, capable of effectively protecting the safety of passengers and equipment during an elevator fall, to overcome the shortcomings of existing technologies and improve the safety of elevator operation. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides an elevator fall buffer protection device, which solves the problems of traditional elevator buffer devices, such as spring buffers, which have limited buffering effect when facing a rapidly falling elevator and are difficult to effectively absorb huge impact energy; and hydraulic buffers, although having relatively good buffering performance, have complex structures, high costs, and are difficult to maintain. Some buffer devices have slow response speeds and cannot intervene in time in the early stages of an elevator fall, thus failing to provide continuous, stable, and reliable buffer protection for the elevator.
[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an elevator fall buffer protection device, including a support frame, the support frame being provided with a connecting mechanism, the connecting mechanism including a transmission component disposed in the middle section of the support frame, a limit component disposed in the right section of the support frame, and an abutment component disposed in the upper section of the support frame; The transmission assembly includes a connecting frame fixedly installed on the top of the receiving frame. A ratchet is rotatably connected to the inner wall of the connecting frame. A bearing frame is fixedly installed on the inner wall of the middle section of the connecting frame. A connecting crossbar is fixedly connected to the outer wall of the bearing frame. A roller frame is fixedly connected to the outer wall of the connecting crossbar. A screw is fixedly connected to the top of the connecting crossbar. A connecting sleeve is spirally connected to the top outer wall of the screw. A hinge plate is hinged to one end of the top front of the connecting sleeve. A connecting spring is sleeved on the outer wall of the screw. A rotating bearing is rotatably connected to one end of the back of the hinge plate. A limit block is fixedly connected to the bottom outer wall of the rod fixedly connected to the lower section outer wall of the rotating bearing. A connecting rod is rotatably connected to the inner wall of the limit block.
[0005] A further improvement is that the limiting component includes a side frame, a rotating rod is rotatably connected to the inner wall of the lower section of the side frame, a transmission wheel is fixedly connected to the outer wall of the front and rear ends of the rotating rod, a connecting rod is fixedly connected to the inner wall of the middle section of the side frame, a stop block is fixedly connected to the outer wall of the connecting rod, a sleeve rod is slidably connected to the outer wall of the upper section of the side frame, and a limiting spring is sleeved on the outer wall of the upper section of the sleeve rod.
[0006] A further improvement is that the abutting assembly includes a connecting rod frame fixedly installed on the top of the rear section of the receiving frame. A connecting box is fixedly installed on the front of the connecting rod frame. A connecting rotating frame is fixedly connected to the inner wall of the lower section of the connecting box. A sector-shaped block is rotatably connected to the inner wall of the connecting rotating frame. A stop rod abuts the lower section of the sector block. A deflection wedge abuts the outer wall of the stop rod. A stop rod is fixedly connected to the inner wall of the deflection wedge. An abutting spring is fixedly connected to the bottom outer wall of the deflection wedge. A rotating connecting block is rotatably connected to one end of the front of the abutting spring.
[0007] A further improvement is that the ratchet is rotatably connected to the inner wall of the bearing frame; when the elevator falls, the moving parts associated with the device drive the roller frame to move, and the connecting crossbar moves with the roller frame. Since the bearing frame is fixed to the inner wall of the connecting frame, the connecting crossbar rotates around the bearing frame, thereby causing the ratchet to rotate on the inner wall of the connecting frame. The ratchet is connected to the inner wall of the bearing frame because it rotates.
[0008] A further improvement is that the side frame is fixedly installed at the right end of the connecting frame, one bottom end of the sleeve rod is hinged to the outer wall of the roller frame, and the bottom outer wall of the abutment block is in contact with the outer wall of the roller frame; the side frame is fixedly installed at the right end of the connecting frame and moves with the connecting frame; when the roller frame moves, one bottom end of the sleeve rod is hinged to the outer wall of the roller frame and slides on the upper outer wall of the side frame, and the limiting spring is sleeved on the upper outer wall of the sleeve rod. Due to the deformation caused by the sliding of the sleeve rod, energy is absorbed and the sleeve rod is limited.
[0009] A further improvement is that the abutment is rotatably connected to the inner wall of the roller frame, and a disc spring is sleeved at the connection between the abutment and the roller frame. The rotating connecting block is rotatably connected to the inner wall of the ratchet. The abutment is fixedly connected to the inner wall of the deflection wedge, and the abutment spring fixedly connected to the bottom outer wall of the deflection wedge deforms to absorb energy. The rotating connecting block is rotatably connected to one end of the front of the abutment spring and rotatably connected to the inner wall of the ratchet to link the ratchet, further dissipating energy through ratchet rotation, spring deformation, etc.
[0010] A further improvement is that the hinge plate is rotatably connected to the inner wall of the connecting frame, and the connecting rod is rotatably connected to the inner wall of the roller frame; the movement of the connecting sleeve drives the hinge plate to rotate. One end of the top front of the hinge plate is hinged to the connecting sleeve and rotatably connected to the inner wall of the connecting frame. The rotating bearing connected to the back end of the hinge plate moves accordingly, causing the bottom outer wall of the rod, which is fixedly connected to the lower section of the outer wall of the rotating bearing, to move. The connecting rod is rotatably connected to the inner wall of the limiting block and rotatably connected to the inner wall of the roller frame, further linking the kinetic energy to transmit and disperse.
[0011] By employing the above technical solution, this utility model provides an elevator fall buffer protection device, which has at least the following beneficial effects: 1. This utility model achieves efficient energy absorption and buffering through a multi-component collaborative mechanical structure design. In the transmission component, connecting springs, hinge plates, etc. cooperate to convert the kinetic energy of the fall into the deformation energy of the springs; the limiting springs and abutment blocks of the limiting component further dissipate energy through deformation and friction; the disc springs and abutment springs of the abutment component also participate in energy absorption. The multiple components disperse and consume the huge kinetic energy of the elevator fall from different dimensions. Compared with the traditional single buffer structure, the buffering effect is better, which can effectively reduce the damage of the fall impact to the elevator and passengers and improve the level of safety protection.
[0012] 2. The components of this utility model device respond rapidly to each other, and can intervene in time to protect the elevator in the early stage of a fall. When the fall triggers motion transmission, the ratchet and connecting crossbar of the transmission component quickly move together, the sleeve and rotating rod of the limit component respond synchronously, and the abutment rod and sector block of the abutment component also move immediately. This multi-component rapid coordination mechanism avoids the problem of untimely buffering due to response lag. Moreover, the mechanical structure is stable and reliable, and the maintenance is relatively simple. While ensuring the safety protection of the elevator during a fall, it reduces the later operation and maintenance costs and improves the practicality and economy of the device. Attached Figure Description
[0013] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.
[0014] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the back side structure of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the front structure of this utility model; Figure 6 This utility model Figure 5 Enlarged structural diagram at point B.
[0015] In the diagram: 1. Receiving frame; 2. Connecting mechanism; 21. Transmission assembly; 211. Connecting frame; 212. Ratchet; 213. Bearing frame; 214. Connecting crossbar; 215. Roller frame; 216. Screw; 217. Connecting sleeve; 218. Connecting spring; 219. Hinge plate; 2110. Rotary bearing one; 2111. Rotary bearing two; 2112. Limiting block; 2113. Connecting rod; 22. Limiting assembly Components; 221, side frame; 222, rotating rod; 223, transmission wheel; 224, connecting rod; 225, abutment block; 226, sleeve rod; 227, limit spring; 23, abutment assembly; 231, connecting rod frame; 232, connecting box; 233, connecting rotating frame; 234, sector block; 235, abutment rod; 236, rotating shaft; 237, deflection wedge; 238, abutment spring; 239, rotating connecting block. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example
[0017] Traditional elevator buffer devices, such as spring buffers, have limited cushioning effect when facing a rapidly falling elevator, and are unable to effectively absorb the huge impact energy. While hydraulic buffers offer relatively better cushioning performance, they are complex in structure, expensive, and difficult to maintain. Some buffer devices also have slow response times and cannot intervene in time during the initial stages of an elevator fall, failing to provide continuous, stable, and reliable cushioning protection. This embodiment provides an elevator fall protection device; please refer to... Figures 1-6An embodiment provides an elevator fall buffer protection device, including a support frame 1, a connecting mechanism 2, and a transmission component 21 disposed in the middle section of the support frame 1. A limit component 22 is disposed in the right section of the support frame 1, and an abutment component 23 is disposed in the upper section of the support frame 1. The transmission component 21 includes a connecting frame 211 fixedly installed on the top of the support frame 1. A ratchet 212 is rotatably connected to the inner wall of the connecting frame 211. A bearing frame 213 is fixedly installed on the inner wall of the middle section of the connecting frame 211, and a connecting crossbar 214 is fixedly connected to the outer wall of the bearing frame 213. A roller frame 215 is fixedly connected to the outer wall of the connecting crossbar 214. A screw 216 is fixedly connected to the top of the outer wall of the connecting crossbar 214. A connecting sleeve 217 is spirally connected to the top outer wall of the screw 216. A hinge plate 219 is hinged to one end of the top front of the connecting sleeve 217. A connecting spring 218 is sleeved on the outer wall of the screw 216. A rotating bearing 2110 is rotatably connected to one end of the back of the hinge plate 219. A limit block 2112 is fixedly connected to the bottom outer wall of the rod fixedly connected to the lower section of the rotating bearing 2110. A connecting rod 2113 is rotatably connected to the inner wall of the limit block 2112.
[0018] In this embodiment, when the elevator falls, the moving parts associated with the device drive the roller frame 215 to move, and the connecting crossbar 214 moves with the roller frame 215. Since the bearing frame 213 is fixed to the inner wall of the connecting frame 211, the connecting crossbar 214 rotates around the bearing frame 213, thereby causing the ratchet 212 to rotate on the inner wall of the connecting frame 211. Because the ratchet 212 is connected to the inner wall of the front side of the bearing frame 213, the ratchet 212 rotates. At the same time, the screw 216 on the connecting crossbar 214 moves, and the connecting sleeve 217, because it is screwed to the outer wall of the top of the screw 216, will move axially relative to the screw 216, compressing or stretching the connecting spring 218. Spring 218 is sleeved on the outer wall of screw 216, and the deformation of spring 218 absorbs part of the energy; the movement of connecting sleeve 217 drives hinge plate 219 to rotate. One end of the top front of hinge plate 219 is hinged to connecting sleeve 217 and rotatably connected to the inner wall of connecting frame 211. Rotary bearing 2110 rotatably connected to the back end of hinge plate 219 moves accordingly, causing the bottom outer wall of rod of limit block 2112, which is fixedly connected to the lower outer wall of rotating bearing 2110, to move. Connecting rod 2113 is rotatably connected to the inner wall of limit block 2112 and rotatably connected to the inner wall of roller frame 215 for further linkage, transmitting and dispersing kinetic energy.
[0019] Furthermore, ratchet 212 is rotatably connected to the inner wall of the front of bearing frame 213; hinge plate 219 is rotatably connected to the inner wall of connecting frame 211; and connecting rod 2113 is rotatably connected to the inner wall of roller frame 215.
[0020] Furthermore, as the screw 216 on the connecting crossbar 214 moves, the connecting sleeve 217, being spirally connected to the outer wall of the top of the screw 216, will move axially relative to the screw 216, compressing or stretching the connecting spring 218. The connecting spring 218 is sleeved on the outer wall of the screw 216, and the deformation of the connecting spring 218 absorbs some of the energy. The movement of the connecting sleeve 217 causes the hinge plate 219 to rotate. One end of the top front of the hinge plate 219 is hinged to the connecting sleeve 217 and rotatably connected to the inner wall of the connecting frame 211. The rotating bearing 2110 rotatably connected to the back end of the hinge plate 219 moves accordingly. Example
[0021] Based on Embodiment 1, the limiting component 22 includes a side frame 221, a rotating rod 222 rotatably connected to the inner wall of the lower section of the side frame 221, a transmission wheel 223 fixedly connected to the outer wall of the front and rear ends of the rotating rod 222, a connecting rod 224 fixedly connected to the inner wall of the middle section of the side frame 221, a stop block 225 fixedly connected to the outer wall of the connecting rod 224, and a sleeve rod 226 slidably connected to the outer wall of the upper section of the side frame 221, with a limiting spring 227 sleeved on the outer wall of the upper section of the sleeve rod 226; the abutment component 23 includes a connecting rod frame 2 fixedly installed on the top of the rear section of the receiving frame 1. 31. A connecting box 232 is fixedly installed on the front of the connecting rod bracket 231. A connecting rotating frame 233 is fixedly connected to the inner wall of the lower section of the connecting box 232. A sector block 234 is rotatably connected to the inner wall of the connecting rotating frame 233. A stop rod 235 abuts against the lower section of the sector block 234. A deflection wedge 237 abuts against the outer wall of the stop rod 235. The stop rod 235 is fixedly connected to the inner wall of the deflection wedge 237. A stop spring 238 is fixedly connected to the outer wall of the bottom of the deflection wedge 237. A rotating connecting block 239 is rotatably connected to one end of the front of the stop spring 238.
[0022] In this embodiment, the side frame 221 is fixedly installed on the right end of the connecting frame 211 and moves with the connecting frame 211; when the roller frame 215 moves, one end of the bottom of the sleeve rod 226 is hinged to the outer wall of the roller frame 215 and slides on the upper outer wall of the side frame 221. The limiting spring 227 is sleeved on the upper outer wall of the sleeve rod 226. Due to the deformation caused by the sliding of the sleeve rod 226, it absorbs energy and limits the sleeve rod 226; at the same time, the rotating rod 222 rotates on the lower inner wall of the side frame 221, and the transmission wheel 223 is fixedly connected. The connecting rod 224 is connected to the outer wall of the front and rear ends of the rotating rod 222, which rotates synchronously. The connecting rod 224 is fixedly connected to the inner wall of the middle section of the side frame 221. The abutment 225 is fixedly connected to the outer wall of the connecting rod 224, and its bottom outer wall contacts the outer wall of the roller frame 215. Through contact and friction with the roller frame 215, as well as the limiting effect between the structures, the excessive movement of the roller frame 215 is restricted, and the transmission component 21 provides buffering. The connecting rod frame 231 is fixedly installed on the top of the rear section of the receiving frame 1, and the front of the connecting box 232 is fixed. Installed on the connecting rod frame 231; after the motion caused by the elevator falling is transmitted to the roller frame 215, the abutment rod 235 is rotatably connected to the inner wall of the roller frame 215 and moves with the roller frame 215. The disc spring sleeved at the connection between the abutment rod 235 and the roller frame 215 provides auxiliary cushioning; when the abutment rod 235 moves, it is rotatably connected to the inner wall of the connecting rotating frame 233 with the sector block 234. The connecting rotating frame 233 is fixedly connected to the lower inner wall of the connecting box 232 and abuts against it, causing the sector block 234 to rotate; at the same time, the abutment rod 235... The rod 235 interacts with the abutment 235 fixedly connected to the inner wall of the deflection wedge 237. The abutment spring 238 fixedly connected to the bottom outer wall of the deflection wedge 237 deforms and absorbs energy. The rotating connecting block 239 is rotatably connected to one end of the front of the abutment spring 238 and rotatably connected to the inner wall of the ratchet 212, which is linked to the ratchet 212. The energy is further dissipated through the rotation of the ratchet and the deformation of the spring, thereby achieving buffer protection against elevator falls. The multi-component collaboration ensures that the buffering process is stable and effective.
[0023] Furthermore, the side frame 221 is fixedly installed on the right end of the connecting frame 211, one end of the bottom of the sleeve rod 226 is hinged to the outer wall of the roller frame 215, and the bottom outer wall of the abutment block 225 is in contact with the outer wall of the roller frame 215; the abutment rod 235 is rotatably connected to the inner wall of the roller frame 215, and a disc spring is sleeved at the connection between the abutment rod 235 and the roller frame 215; the rotating connecting block 239 is rotatably connected to the inner wall of the ratchet 212.
[0024] Furthermore, the limiting spring 227 is sleeved on the outer wall of the upper section of the sleeve rod 226. Due to the deformation caused by the sliding of the sleeve rod 226, it absorbs energy and limits the sleeve rod 226. At the same time, the rotating rod 222 rotates on the inner wall of the lower section of the side frame 221. The transmission wheel 223 is fixedly connected to the outer wall of the front and rear ends of the rotating rod 222 and rotates synchronously. The connecting rod 224 is fixedly connected to the inner wall of the middle section of the side frame 221. The abutment 225 is fixedly connected to the outer wall of the connecting rod 224. Its bottom outer wall contacts and connects to the outer wall of the roller frame 215. Through contact and friction with the roller frame 215, as well as the limiting effect between the structures, the excessive movement of the roller frame 215 is limited, and the transmission component 21 buffers the movement.
[0025] Working principle: When the elevator falls, the moving parts associated with the device drive the roller frame 215 to move. The connecting crossbar 214 moves with the roller frame 215. Since the bearing frame 213 is fixed to the inner wall of the connecting frame 211, the connecting crossbar 214 rotates around the bearing frame 213, which in turn causes the ratchet 212 to rotate on the inner wall of the connecting frame 211. Because the ratchet 212 is connected to the inner wall of the front of the bearing frame 213, the ratchet 212 rotates. At the same time, the screw 216 on the connecting crossbar 214 moves. The connecting sleeve 217, because it is screwed to the outer wall of the top of the screw 216, will move axially relative to the screw 216, compressing or stretching the connecting spring 218. 218 is sleeved on the outer wall of the screw 216, and the deformation of the connecting spring 218 absorbs part of the energy; the movement of the connecting sleeve 217 drives the hinge plate 219 to rotate. One end of the top front of the hinge plate 219 is hinged to the connecting sleeve 217 and rotatably connected to the inner wall of the connecting frame 211. The rotating bearing 2110 rotatably connected to the back end of the hinge plate 219 moves accordingly, causing the bottom outer wall of the rod of the limit block 2112, which is fixedly connected to the lower outer wall of the rotating bearing 2110, to move. The connecting rod 2113 is rotatably connected to the inner wall of the limit block 2112 and rotatably connected to the inner wall of the roller frame 215 for further linkage, transmitting and dispersing the kinetic energy. The side frame 221 is fixedly installed on the right end of the connecting frame 211 and moves with the connecting frame 211. When the roller frame 215 moves, one end of the bottom of the sleeve rod 226 is hinged to the outer wall of the roller frame 215 and slides on the upper outer wall of the side frame 221. The limiting spring 227 is sleeved on the upper outer wall of the sleeve rod 226. Due to the deformation caused by the sliding of the sleeve rod 226, it absorbs energy and limits the sleeve rod 226. At the same time, the rotating rod 222 rotates on the lower inner wall of the side frame 221. The transmission wheel 223 is fixedly connected to the front and rear outer walls of the rotating rod 222 and rotates synchronously. The connecting rod 224 is fixedly connected to the abutment 225 on the middle inner wall of the side frame 221 and is fixedly connected to the outer wall of the connecting rod 224. Its bottom outer wall contacts and connects to the outer wall of the roller frame 215. Through contact and friction with the roller frame 215 and the limiting effect between the structures, the excessive movement of the roller frame 215 is limited, and the transmission component 21 buffers the movement. The connecting rod frame 231 is fixedly installed on the top of the rear section of the receiving frame 1, and the connecting box 232 is fixedly installed on the front of the connecting rod frame 231. After the motion caused by the elevator falling is transmitted to the roller frame 215, the abutment rod 235 is rotatably connected to the inner wall of the roller frame 215 and moves with the roller frame 215. The disc spring sleeved at the connection between the abutment rod 235 and the roller frame 215 provides auxiliary buffering. When the abutment rod 235 moves, it is rotatably connected to the inner wall of the connecting rotating frame 233 with the sector block 234. The connecting rotating frame 233 is fixedly connected to the inner wall of the lower section of the connecting box 232 and abuts against it. This causes the sector block 234 to rotate; simultaneously, the abutment rod 235 interacts with the abutment rod 235 fixedly connected to the inner wall of the deflection wedge 237, causing the abutment spring 238 fixedly connected to the bottom outer wall of the deflection wedge 237 to deform and absorb energy. The rotating connecting block 239 is rotatably connected to one end of the front of the abutment spring 238 and rotatably connected to the inner wall of the ratchet 212, which is linked to the ratchet 212. This further dissipates energy through ratchet rotation and spring deformation, thus achieving buffer protection against elevator falls. The collaboration of multiple components ensures a stable and effective buffering process.
[0026] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An elevator fall buffer protection device, comprising a support frame (1), characterized in that: The receiving frame (1) is provided with a connecting mechanism (2), the connecting mechanism (2) includes a transmission component (21) provided in the middle section of the receiving frame (1), a limit component (22) is provided in the right section of the receiving frame (1), and an abutment component (23) is provided in the upper section of the receiving frame (1). The transmission assembly (21) includes a connecting frame (211) fixedly installed on the top of the receiving frame (1). A ratchet (212) is rotatably connected to the inner wall of the connecting frame (211). A bearing frame (213) is fixedly installed on the inner wall of the middle section of the connecting frame (211). A connecting crossbar (214) is fixedly connected to the outer wall of the bearing frame (213). A roller frame (215) is fixedly connected to the outer wall of the connecting crossbar (214). A screw (216) is fixedly connected to the top of the outer wall of the connecting crossbar (214). (216) A connecting sleeve (217) is spirally connected to the top outer wall. A hinge plate (219) is hinged to one end of the top front of the connecting sleeve (217). A connecting spring (218) is sleeved on the outer wall of the screw (216). A rotating bearing (2110) is rotatably connected to one end of the back of the hinge plate (219). A limit block (2112) is fixedly connected to the bottom outer wall of the rod fixedly connected to the lower section of the rotating bearing (2110). A connecting rod (2113) is rotatably connected to the inner wall of the limit block (2112).
2. The elevator fall buffer protection device according to claim 1, characterized in that: The limiting component (22) includes a side frame (221), a rotating rod (222) is rotatably connected to the inner wall of the lower section of the side frame (221), a transmission wheel (223) is fixedly connected to the outer wall of the front and rear ends of the rotating rod (222), a connecting rod (224) is fixedly connected to the inner wall of the middle section of the side frame (221), a stop block (225) is fixedly connected to the outer wall of the connecting rod (224), and a sleeve rod (226) is slidably connected to the outer wall of the upper section of the side frame (221), and a limiting spring (227) is sleeved on the outer wall of the upper section of the sleeve rod (226).
3. The elevator fall buffer protection device according to claim 1, characterized in that: The abutment assembly (23) includes a connecting rod frame (231) fixedly installed on the top of the rear section of the receiving frame (1). A connecting box (232) is fixedly installed on the front of the connecting rod frame (231). A connecting rotating frame (233) is fixedly connected to the inner wall of the lower section of the connecting box (232). A fan-shaped block (234) is rotatably connected to the inner wall of the connecting rotating frame (233). A stop rod (235) abuts the lower section of the fan-shaped block (234). A deflection wedge (237) abuts the outer wall of the stop rod (235). A stop rod (235) is fixedly connected to the inner wall of the deflection wedge (237). An abutment spring (238) is fixedly connected to the bottom outer wall of the deflection wedge (237). A rotating connecting block (239) is rotatably connected to one end of the front of the abutment spring (238).
4. The elevator fall buffer protection device according to claim 1, characterized in that: The ratchet (212) is rotatably connected to the inner wall of the front of the bearing bracket (213).
5. The elevator fall buffer protection device according to claim 2, characterized in that: The side frame (221) is fixedly installed on the right end of the connecting frame (211), and one end of the bottom of the sleeve rod (226) is hinged to the outer wall of the roller frame (215). The bottom outer wall of the abutment block (225) is in contact with the outer wall of the roller frame (215).
6. The elevator fall buffer protection device according to claim 3, characterized in that: The abutment (235) is rotatably connected to the inner wall of the roller frame (215), and a disc spring is sleeved at the connection between the abutment (235) and the roller frame (215). The rotating connecting block (239) is rotatably connected to the inner wall of the ratchet (212).
7. The elevator fall buffer protection device according to claim 1, characterized in that: The hinge plate (219) is rotatably connected to the inner wall of the connecting frame (211), and the connecting rod (2113) is rotatably connected to the inner wall of the roller frame (215).