Elevator car arresting device and elevator
The elevator car stop device, which uses a magnetic base to contact the guide rail surface, solves the problem of guide rail damage in existing technologies, and achieves the effects of reducing maintenance costs and reducing car sway.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HITACHI BUILDING TECH GUANGZHOU CO LTD
- Filing Date
- 2023-12-18
- Publication Date
- 2026-07-31
AI Technical Summary
The wedges of existing elevator safety clamps have a small contact area when clamping the guide rails, which leads to damage to the guide rails and increases maintenance costs.
The elevator car stop device using a magnetic mechanism stops the car by having the magnetic base contact the guide rail surface, increasing the contact area and preventing damage to the guide rail.
It effectively prevents guide rail damage, reduces maintenance costs, reduces car swaying in the second direction, and saves elevator maintenance expenses.
Smart Images
Figure CN117623043B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of elevator technology, and more particularly to an elevator car stop device, and an elevator including the elevator car stop device. Background Technology
[0002] Safety brakes are an indispensable safety device in elevators. When an elevator overspeeds or becomes uncontrollable, the safety brakes and speed governor work together to limit the elevator's descent, thus protecting the elevator. When the elevator's descent speed exceeds the speed governor's specified operating speed, the speed governor activates, locking the wire rope. The wire rope then lifts the safety brake's linkage lever, forcing the car to stop on the guide rails.
[0003] Existing safety clamps typically use a speed governor's wire rope to pull two wedges inside the safety clamp to grip the elevator guide rail. The wedges have teeth on the side facing the guide rail; when the car stops, these teeth engage with the guide rail, stopping the car's descent. However, existing safety clamps have the following drawbacks: because the wedges grip the guide rail via teeth, the contact area between the wedges and the guide rail is relatively small. This can damage the guide rail surface when the wedges clamp, requiring manual repair for continued use, or even replacement of the guide rail if the damage is severe, increasing elevator maintenance costs. Summary of the Invention
[0004] The purpose of this invention is to provide an elevator car stopping device and an elevator, which can prevent damage to the guide rails when stopping the car, thereby reducing the maintenance cost of the elevator.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] On the one hand, an elevator car stop device is provided, comprising:
[0007] The fixing mechanism has two fixing mechanisms, which are distributed at intervals along a first direction. Each fixing mechanism includes a fixing seat fixed to the outer wall of the car. The fixing seat has a recessed groove on the side opposite to the car. The groove passes through the top and bottom of the fixing seat, and the elevator guide rail is movably inserted through the groove.
[0008] The magnetic mechanism is provided inside both of the two grooves. The magnetic mechanism includes multiple sets of magnetic components. At least two sets of magnetic components are provided on the two sidewalls of the groove in a second direction, which is perpendicular to the first direction. All the magnetic components on the same sidewall are distributed at intervals along the vertical direction. Each set of magnetic components includes a magnetic base and a control handle rotatably connected to the magnetic base. The control handle protrudes from the outside of the magnetic base. The magnetic base is installed on the sidewall of the groove and located on one side of the guide rail. One side of the magnetic base can selectively attract the guide rail. The magnetic base can be opened or closed when the control handle is rotated.
[0009] The lifting mechanism includes a transmission assembly and two lifting rods connected by the transmission assembly. Both lifting rods can be raised and lowered relative to the car and the guide rail. The wire rope of the speed limiter is connected to the transmission assembly. The transmission assembly is movably disposed on the top of the car. Each lifting rod corresponds to a groove. The lifting rod is movably disposed between the bottom of the corresponding groove and the guide rail. The rising of the lifting rod can drive all the control handles in the same groove to rotate and open the magnetic base.
[0010] As a preferred technical solution of the elevator car stopping device, each of the lifting rods is provided with a lifting protrusion located on one side of the magnetic base, and each group of magnetic components corresponds to the lifting protrusion. The lifting protrusion protrudes in the direction of the corresponding control handle. When the lifting rod rises, it can drive the lifting protrusion to pull the corresponding control handle to rotate by a set angle.
[0011] As a preferred technical solution of the elevator car stopping device, the upper end of the lifting protrusion has a guide surface that abuts against the control handle, and the guide surface is inclined from bottom to top.
[0012] As a preferred technical solution of the elevator car stopping device, multiple sets of limiting components are provided inside the groove. Each limiting component corresponds to a magnetic component, and each lifting protrusion corresponds to a limiting component. Each limiting component includes two limiting plates, which are spaced apart and parallel to each other in the vertical direction. One end of each limiting plate is connected to the side wall of the groove, and the other end extends toward the lifting rod. The magnetic base and the lifting protrusion are both located between the two limiting plates corresponding to the limiting components. The lifting protrusion can selectively abut against any one of the limiting plates in the limiting components.
[0013] As a preferred technical solution of the elevator car stop device, the control handle has a first use position and a second use position. When the control handle is in the first use position, the magnetic base is closed. When the control handle is in the second use position, the magnetic base is opened. The control handle can rotate back and forth between the first use position and the second use position. The magnetic assembly also includes an elastic element, which is connected to both the control handle and the magnetic base. The elastic element always has a tendency to drive the control handle to rotate to the first use position.
[0014] As a preferred technical solution of the elevator car stopping device, the magnetic base includes a cast iron base body, a permanent magnet, and two non-magnetic blocks. The cast iron base body includes two spaced and oppositely arranged base segments. Each of the two base segments has a groove recessed on its opposite side. The inner sidewalls of both grooves are provided with high-permeability arc bodies. The two high-permeability arc bodies are connected by the two non-magnetic blocks, and the two non-magnetic blocks are located at opposite ends of the same high-permeability arc body. The magnetic block extends from the inside of the slot to the outer side of the base body. Two highly magnetically permeable arc bodies and two non-magnetically permeable blocks surround and form a through hole. The permanent magnet is rotatably disposed in the through hole. One end of the control handle extends from the side of the cast iron base body facing the bottom of the groove into the through hole and connects with the permanent magnet. The outer sides of the permanent magnet where the N pole and S pole are located are slidably connected to the inner surface of the highly magnetically permeable arc body. The side of the base body away from the sidewall of the groove is used to attract the guide rail.
[0015] As a preferred technical solution of the elevator car stopping device, the magnetic base further includes a first magnetic barrier plate, which is disposed on the side of the cast iron base facing the bottom of the groove.
[0016] And / or, the magnetic base further includes a second magnetic barrier plate disposed on the side of the cast iron base body facing the groove opening.
[0017] As a preferred technical solution of the elevator car stopping device, both fixing mechanisms include fixing plates protruding from the top of the car, with each fixing plate corresponding to a lifting rod. The transmission assembly includes two connecting pins and a transmission shaft rotatably connected to the two fixing plates. Both connecting pins can be raised and lowered relative to the fixing plates. The two lifting rods are movably connected to the corresponding fixing plates via the two connecting pins. The connecting pins are connected to the transmission shaft via crank arms, which can move relative to the connecting pins. An ear plate is provided between the connecting pins and the transmission shaft on the crank arm, and the ear plate is used to connect to the wire rope.
[0018] As a preferred technical solution of the elevator car stop device, the fixing plate is provided with a first waist-shaped hole, the length of the first waist-shaped hole extends in the vertical direction, the connecting shaft pin is inserted into the first waist-shaped hole, the end of the crank arm away from the drive shaft is provided with a second waist-shaped hole, and the end of the connecting shaft pin away from the lifting rod passes through the second waist-shaped hole and is movably inserted into the first waist-shaped hole.
[0019] On the other hand, an elevator is also provided, including a car and the aforementioned elevator car stop device disposed on the car.
[0020] The beneficial effects of this invention are as follows: When the car is running normally (i.e., when the car is not overspeeding), the magnetic seat is in the closed state. The magnetic seat inside the fixed seat is slidably connected to the guide rail. The car rises and falls along the guide rail, and the magnetic seat inside the fixed seat rises and falls with the car relative to the guide rail. When the car overspeeds, the speed limiter is activated and pulls the transmission assembly through the wire rope to lift the two lifting rods upward, so that the lifting rods rise vertically to a set height. During the upward movement of the lifting rods, all the control handles in the same groove are rotated by a set angle to switch the magnetic seat from the closed state to the open state. When the magnetic seat is opened, the outer surface of the magnetic seat is magnetic, so the magnetic seat can attract the guide rail, thereby effectively stopping the car on the guide rail. This type of elevator car stopping device stops the car by magnetically engaging the guide rail. When the car stops, the magnetic base and guide rail form surface contact, increasing the contact area. Compared to existing technologies, this device prevents the wedge's meshing teeth from damaging the guide rail, and eliminates the need for subsequent repairs or replacements of the guide rail, thus saving on elevator maintenance costs. Furthermore, since magnetic bases are installed on both sidewalls of the groove in the second direction, the amount of displacement of the car in the second direction can be limited, reducing the car's swaying in that direction. Attached Figure Description
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0022] Figure 1 This is a three-dimensional structural diagram of the elevator car stop device and the car at an angle (when the magnetic base is closed) as described in the embodiment.
[0023] Figure 2 for Figure 1 A schematic diagram of AA in the diagram.
[0024] Figure 3 This is a three-dimensional structural diagram of the elevator car stop device and the car at one angle (when the magnetic base is opened) as described in the embodiment.
[0025] Figure 4 for Figure 3 A schematic diagram of BB in the middle.
[0026] Figure 5 This is a three-dimensional structural diagram of the elevator car stop device and the car from another angle (when the magnetic base is closed) as described in the embodiment.
[0027] Figure 6 for Figure 5 Enlarged view of point C.
[0028] Figure 7 This is a structural diagram of the car, fixing mechanism, and limiting assembly described in the embodiment.
[0029] Figure 8 This is a perspective view of the lifting mechanism described in the embodiment.
[0030] Figure 9 This is a perspective view of the magnetic base at one angle as described in the embodiment.
[0031] Figure 10 This is an exploded view of the magnetic base described in the embodiment.
[0032] Figure 11 This is a schematic diagram of the permanent magnet inside the cast iron base as described in the embodiment (when the magnetic base is closed).
[0033] Figure 12 This is a schematic diagram of the magnetic seat engaging the guide rail as described in the embodiment (the first magnetic barrier plate and the control handle have been removed from the diagram).
[0034] In the picture:
[0035] 1. Fixing mechanism; 11. Fixing base; 111. Groove; 112. Groove sidewall; 12. Fixing plate; 121. First oblong hole; 13. Limiting assembly; 131. Limiting plate; 2. Magnetic assembly; 21. Magnetic base; 211. Cast iron base body; 2111. Base split; 2112. Notch; 212. High magnetic permeability arc body; 213. Non-magnetic block; 214. Permanent magnet; 2141. Snap-fit groove; 215. First magnetic barrier plate; 2151. Insertion hole; 2152. Avoidance 216. Second magnetic barrier plate; 22. Control handle; 221. Handle body; 222. Rotating plate; 223. Snap-fit part; 23. Torsion spring; 231. Circle body; 232. Connecting body; 3. Lifting mechanism; 31. Lifting rod; 311. Lifting protrusion; 3111. Guide surface; 32. Connecting shaft pin; 33. Drive shaft; 34. Crank arm; 341. Ear plate; 3411. Ear hole; 342. Second waist-shaped hole; 4. Fastening screw; 100. Car; 200. Guide rail. Detailed Implementation
[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0039] like Figures 1 to 8As shown, the present invention provides an elevator car stopping device, including a fixing mechanism 1, a magnetic mechanism, and a lifting mechanism 3. There are two fixing mechanisms 1, which are spaced apart along a first direction (i.e., the X direction in the figure). Each fixing mechanism 1 includes a fixing seat 11 fixed to the outer wall of the car 100. A groove 111 is recessed on the side of the fixing seat 11 facing away from the car 100, penetrating the top and bottom of the fixing seat 11. The elevator guide rail 200 is movably inserted within the groove 111. A magnetic mechanism is provided inside each of the two grooves 111, and the magnetic mechanism includes multiple sets of magnetic components 2. At least two sets of magnetic components 2 are provided on each of the two sidewalls 112 of the groove 111 in a second direction (i.e., the Y direction in the figure), which is perpendicular to the first direction. In this embodiment, four sets of magnetic components 2 are provided on each sidewall 112. All magnetic components 2 are distributed vertically at intervals on the same sidewall 112 of the slot. Each set of magnetic components 2 includes a magnetic base 21 and a control handle 22 rotatably connected to the magnetic base 21. The control handle 22 protrudes from the outside of the magnetic base 21. The magnetic base 21 is mounted on the sidewall 112 of the slot and located on one side of the guide rail 200. The guide rail 200 and the magnetic base 21 are selectively slidably connected. One side of the magnetic base 21 can selectively attract the guide rail 200. The magnetic base 21 can be opened or closed when the control handle 22 is rotated. The lifting mechanism 3 includes a transmission assembly and two lifting rods 31 connected by the transmission assembly. Both lifting rods 31 can be raised and lowered relative to the car 100 and the guide rail 200. The wire rope of the speed limiter is connected to the transmission assembly, which is movably mounted on the top of the car 100. Each lifting rod 31 corresponds to a groove 111 and is movably mounted between the bottom of the corresponding groove 111 and the guide rail 200. The rising of the lifting rod 31 can drive all the control handles 22 in the same groove 111 to rotate and open the magnetic seat 21. When the magnetic seat 21 is opened, the outer surface of the magnetic seat 21 is magnetic, and one side of the magnetic seat 21 can attract the guide rail 200. When the magnetic seat 21 is closed, the outer surface of the magnetic seat 21 is not magnetic or has weak magnetism, and one side of the magnetic seat 21 releases its attraction to the guide rail 200. During the raising and lowering of the car 100, the magnetic seat 21 slides relative to the guide rail 200.
[0040] When the car 100 is running normally (i.e., when the car 100 is not overspeeding), the magnetic seat 21 is in the closed state. The magnetic seat 21 inside the fixed seat 11 is slidably connected to the guide rail 200. The car 100 rises and falls along the guide rail 200, and the magnetic seat 21 inside the fixed seat 11 rises and falls with the car 100 relative to the guide rail 200. When the car 100 is overspeeding, the speed limiter is activated and pulls the transmission assembly through the wire rope to lift the two lifting rods 31 upward, so that the lifting rods 31 rise vertically to a set height. During the rise of the lifting rods 31, all the control handles 22 in the same groove 111 are rotated to a set angle to switch the magnetic seat 21 from the closed state to the open state. When the magnetic seat 21 is opened, the outer surface of the magnetic seat 21 is magnetic, so the magnetic seat 21 can attract the guide rail 200, thereby effectively stopping the car 100 on the guide rail 200. This type of elevator car stopping device stops the car 100 by attracting the guide rail 200 with a magnetic base 21. When the car 100 is stopped, the magnetic base 21 and the guide rail 200 form surface contact, increasing the contact area between the magnetic base 21 and the guide rail 200. Compared with the prior art, this elevator car stopping device prevents the wedge teeth from damaging the guide rail 200. The stopped car 100 does not require subsequent repair or replacement of the guide rail 200, which helps to save elevator maintenance costs. In addition, since magnetic bases 21 are installed on both sidewalls 112 of the groove 111 in the second direction, the magnetic bases 21 on the two sidewalls 112 of the groove in the second direction can limit the displacement of the car 100 in the second direction, reducing the swaying of the car 100 in the second direction.
[0041] It should be noted that the bottom of the groove 111 refers to the side of the groove 111 that is directly opposite the opening of the groove, that is, the side of the groove 111 that is closer to the car 100 is the bottom of the groove 111.
[0042] In one embodiment, reference is made to Figures 2 to 8 Each lifting rod 31 is provided with a lifting protrusion 311 located on one side of the magnetic base 21. Each set of magnetic components 2 has a corresponding lifting protrusion 311. The lifting protrusion 311 protrudes towards the corresponding control handle 22. When the lifting rod 31 rises, it can drive the lifting protrusion 311 to pull the corresponding control handle 22 to rotate. The lifting protrusion 311 rises and falls synchronously with the lifting rod 31. When the car 100 is running normally, the lifting protrusion 311 is located on the lower side of the corresponding control handle 22. When the car 100 overspeeds, the wire rope pulls the lifting rod 31 upward through the transmission component. The lifting protrusion 311 moves upward with the lifting rod 31 and drives the knob to rotate, thereby opening the magnetic base 21.
[0043] Preferably, refer to Figure 2 , Figure 4 and Figure 8The upper end of the lifting protrusion 311 has a guide surface 3111 that abuts against the control handle 22, and the guide surface 3111 is inclined from bottom to top. Specifically, the guide surface 3111 is inclined from bottom to top towards the side away from the magnetic base 21. When the lifting protrusion 311 moves upward, it can gradually abut against the control handle 22 through the upward-inclined guide surface 3111, so that the control handle 22 gradually rotates as the lifting rod 31 rises, thereby making the control handle 22 rotate smoothly.
[0044] Reference Figure 2 , Figure 4 , Figure 6 and Figure 7 The groove 111 is provided with multiple sets of limiting components 13, each corresponding to a magnetic component 2. The lifting protrusion 311 also corresponds to a limiting component 13. Each limiting component 13 includes two limiting plates 131, which are spaced apart and parallel to each other in the vertical direction. One end of each limiting plate 131 is connected to the side wall 112 of the groove, and the other end extends toward the lifting rod 31. The magnetic seat 21 and the lifting protrusion 311 are both located between the two limiting plates 131 of the corresponding limiting component 13. The lifting protrusion 311 can selectively abut against any one of the limiting plates 131 in the limiting component 13. When the car 100 is running normally, the lifting protrusion 311 abuts against the limiting plate 131 on the lower side of the limiting assembly 13. When the car 100 overspeeds, the wire rope drives the lifting rod 31 upward through the rotating assembly, and the lifting protrusion 311 is driven to move upward. When the lifting protrusion 311 abuts against the limiting plate 131 on the upper side of the limiting assembly 13, the lifting rod 31 stops moving upward. In this way, the lifting height of the lifting rod 31 can be limited by the two limiting plates 131 in the limiting assembly 13.
[0045] Preferably, the distance between the two limiting plates 131 is greater than the height of the magnetic base 21, so that there is enough height space between the two limiting plates 131 to install the magnetic base 21, which helps to reduce the installation difficulty of the magnetic base 21.
[0046] In this example, refer to Figure 6 The magnetic base 21 is tightly connected to the side wall 112 of the groove by a fastener. The fastener is a fastening screw 4, which passes through the side wall 112 of the groove from the outside of the fixed base 11 and is threaded to the magnetic base 21.
[0047] In other examples, the magnetic base 21 can be installed in the groove 111 by means of welding or bonding.
[0048] Optionally, the control handle 22 has a first operating position and a second operating position. When the control handle 22 is in the first operating position, the magnetic base 21 is closed; when the control handle 22 is in the second operating position, the magnetic base 21 is opened. The control handle 22 can rotate back and forth between the first and second operating positions. It should be noted that when the car is running normally, the control handle 22 is in the first operating position, at which time the outer surface of the magnetic base 21 is non-magnetic or has weak magnetism. When the car is stopped on the guide rail 200 due to overspeed, the control handle 22 is in the second operating position, at which time the outer surface of the magnetic base 21 is magnetic and can attract the guide rail 200. The magnetic assembly also includes an elastic element, which is connected to both the control handle 22 and the magnetic base 21. The elastic element always has a tendency to drive the control handle 22 to rotate to the first operating position. When the limiter releases the tension on the wire rope, the lifting rod 31 moves automatically downward under the action of gravity. When the lifting protrusion 311 abuts against the limiting plate 131 on the lower side of the limiting assembly 13, the lifting rod 31 stops descending (that is, the lifting rod 31 returns to the position when the car 100 is running normally). At this time, the lifting protrusion 311 releases the driving force on the control handle 22, and under the action of the elastic element, the control handle 22 is driven to automatically rotate from the second use position to the first use position, which is conducive to the reset of the knob handle.
[0049] In this example, refer to Figures 9 to 11 The elastic element is a torsion spring 23, which has a circular body 231 and two connecting bodies 232 connected to the circular body 231 respectively. One end of the connecting body 232 away from the circular body 231 is connected to the magnetic base 21, and the other end of the connecting body 232 away from the circular body 231 is connected to the control handle 22.
[0050] Furthermore, both the magnetic base 21 and the control handle 22 are provided with insertion holes 2151 for the insertion of the hole connector 232.
[0051] In this embodiment, refer to Figures 9 to 12The magnetic base 21 includes a cast iron base body 211, a permanent magnet 214, and two non-magnetic blocks 213. The cast iron base body 211 includes two spaced-apart and oppositely arranged base segments 2111. Each of the two base segments 2111 has a recessed slot on its opposite side, and the inner wall of each slot is provided with a high-permeability arc body 212. The two high-permeability arc bodies 212 are connected by two non-magnetic blocks 213, which are located at opposite ends of the same high-permeability arc body 212. The non-magnetic blocks 213 extend from the inside of the slot to the outer surface of the base segment 2111. The two high-permeability arc bodies 212 and the two non-magnetic blocks 213 form a through hole, and the permanent magnet 214 is rotatably disposed within the through hole. One end of the control handle 22 extends from the cast iron base 211 towards the bottom of the groove 111 into a through hole and connects to the permanent magnet 214. The outer surfaces of the permanent magnet 214, containing the N and S poles, are slidably connected to the inner surface of the high-permeability arc-shaped body 212. Both high-permeability arc-shaped bodies 212 are coaxial with the permanent magnet 214, and two non-magnetic blocks 213 are directly opposite each other. In this example, the non-magnetic blocks 213 are made of copper. (Refer to...) Figure 11 When the car 100 is operating normally (i.e., the car 100 is not overspeeding), the N and S poles of the permanent magnet 214 are at the same horizontal position. The N and S poles of the permanent magnet 214 simultaneously contact the same high-permeability circular arc 212. The N and S poles of the permanent magnet 214 and the same high-permeability circular arc 212 form a magnetic circuit. Therefore, the outer surface of the cast iron base 211 is not magnetic. Thus, the cast iron base 211 cannot attract the guide rail 200 at this time. (Refer to...) Figure 12 When the car 100 overspeeds, the speed limiter pulls the lifting rod 31 upwards via the steel wire rope. The lifting rod 31 rotates the permanent magnet 214 90° within the through hole via the control handle 22. At this time, the S pole and N pole of the permanent magnet 214 are respectively connected to two different high-permeability arc bodies 212. The magnetic lines of force form a closed loop along the following path: N pole of permanent magnet 214 - one of the high-permeability arc bodies 212 - one of the seat bodies 2111 - guide rail 200 - the other high-permeability arc body 212 - S pole of permanent magnet 214. Therefore, the outer surface of the cast iron seat body 211 is magnetic. Under the action of magnetism, the cast iron seat body 211 can attract the guide rail 200, so that the car 100 can be firmly attached to the guide rail 200, achieving the purpose of stopping the car 100.
[0052] In this example, the high-permeability circular arc 212 is made of ferrite.
[0053] Preferably, the two seat bodies 2111 are provided with a notch 2112 on the side facing the guide rail 200, and the notch 2112 is close to the non-magnetic block 213 to ensure that the cast iron seat body 211 and the guide rail 200 are attracted together.
[0054] In this example, refer to Figure 10The control handle 22 includes a handle body 221, a rotating plate 222, and a locking member 223. The rotating plate 222 is rotatably disposed on the side of the cast iron base 211 facing the bottom of the groove 111. The locking member 223 is disposed in the through hole. The middle part of the permanent magnet 214 is recessed and provided with a locking groove 2141 for the locking member 223 to engage. The rotating plate 222 is engaged by the locking member 223 and the permanent magnet 214. The handle body 221 is disposed outside the cast iron base 211. One end of the handle body 221 is connected to the rotating plate 222. The handle body 221 can abut against the lifting protrusion 311.
[0055] Optionally, the magnetic base 21 further includes a first magnetic barrier plate 215, which is disposed on the side of the cast iron base 211 facing the bottom of the groove 111. In this example, the first magnetic barrier plate 215 is a transparent plate. The first magnetic barrier plate 215 is provided with a clearance hole 2152 and a insertion hole 2151, respectively. The clearance hole 2152 is used to avoid the control handle 22. The magnetic base 21 also includes a second magnetic barrier plate 216, which is disposed on the side of the cast iron base 211 facing the opening of the groove 111. Both the first magnetic barrier plate 215 and the second magnetic barrier plate 216 are non-magnetic plates. By setting the magnetic barrier plates, when the magnetic base 21 is opened, the magnetic conduction to the bottom and opening of the groove 111 of the cast iron base 211 can be prevented. This helps to concentrate the magnetism on the side of the cast iron base 211 facing the guide rail 200, thereby increasing the attraction of the cast iron base 211 to the guide rail 200.
[0056] Reference Figures 1 to 8 Both fixing mechanisms 1 include fixing plates 12 protruding from the top of the car 100. The fixing plates 12 correspond one-to-one with the lifting rods 31. The transmission assembly includes two connecting pins 32 and a transmission shaft 33 rotatably connected to the two fixing plates 12. Both connecting pins 32 can be raised and lowered relative to the fixing plates 12. The two lifting rods 31 are movably connected to the corresponding fixing plates 12 through the two connecting pins 32. The connecting pins 32 are connected to the transmission shaft 33 through a crank arm 34. The crank arm 34 can move relative to the connecting pins 32. An ear plate 341 is provided between the connecting pins 32 and the transmission shaft 33 on the crank arm 34. The ear plate 341 is used to connect with the wire rope. In actual implementation, speed governors are installed above the opposite sides of the elevator car 100. The two speed governors are connected to the ear plates 341 on the two crank arms 34 by steel wire ropes respectively. The drive shaft 33 is rotatably connected to the two fixed plates 12. When one speed governor pulls one crank arm 34 by steel wire rope, the rotation of the drive shaft 33 can drive the other crank arm 34 to move synchronously. Then, the two lifting rods 31 simultaneously drive the control handles 22 in the two grooves 111 to rotate.
[0057] In this example, the ear plate 341 is provided with an ear hole 3411 for connecting a steel wire rope.
[0058] Specifically, the fixed plate 12 is provided with a first oblong hole 121, the length of which extends vertically. A connecting pin 32 is inserted into the first oblong hole 121. The end of the crank arm 34 furthest from the drive shaft 33 is provided with a second oblong hole 342. The end of the connecting pin 32 furthest from the lifting rod 31 passes through the second oblong hole 342 and is movably inserted into the first oblong hole 121. Because the connecting pin 32 is movably inserted into the vertically extending first oblong hole 121, the height at which the connecting pin 32 rises and falls on the fixed plate 12 can be limited by the first oblong hole 121. The second oblong hole 342 mainly buffers the movement of the crank arm 34, ensuring that the lifting rod 31 can only rise and fall in the vertical direction.
[0059] In another embodiment, an elevator is also provided, including a car 100 and an elevator car stop device of any of the above-described structures, the elevator car stop device being disposed on the car 100. When the car 100 overspeeds, the lifting mechanism 3 rotates the control handle 22 in the magnetic mechanism to open the magnetic base 21, so that the magnetic base 21 can attract the guide rail 200, thereby stopping the car 100 on the guide rail 200. When stopping the car 100, damage to the guide rail 200 can be prevented, which helps to reduce the maintenance cost of the elevator.
[0060] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, and do not 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 the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.
[0061] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0063] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.
Claims
1. An elevator car arresting device, characterized by ,include: The fixing mechanism has two fixing mechanisms, which are distributed at intervals along a first direction. Each fixing mechanism includes a fixing seat fixed to the outer wall of the car. The fixing seat has a recessed groove on the side opposite to the car. The groove passes through the top and bottom of the fixing seat, and the elevator guide rail is movably inserted through the groove. The magnetic mechanism is provided inside both of the two grooves. The magnetic mechanism includes multiple sets of magnetic components. At least two sets of magnetic components are provided on the two sidewalls of the groove in a second direction, which is perpendicular to the first direction. All the magnetic components on the same sidewall are distributed at intervals along the vertical direction. Each set of magnetic components includes a magnetic base and a control handle rotatably connected to the magnetic base. The control handle protrudes from the outside of the magnetic base. The magnetic base is installed on the sidewall of the groove and located on one side of the guide rail. One side of the magnetic base can selectively attract the guide rail. The magnetic base can be opened or closed when the control handle is rotated. The lifting mechanism includes a transmission assembly and two lifting rods connected by the transmission assembly. Both lifting rods can be raised and lowered relative to the car and the guide rail. The wire rope of the speed limiter is connected to the transmission assembly. The transmission assembly is movably disposed on the top of the car. Each lifting rod corresponds to a groove. The lifting rod is movably disposed between the bottom of the corresponding groove and the guide rail. The rising of the lifting rod can drive all the control handles in the same groove to rotate and open the magnetic base. The magnetic base includes a cast iron base body, a permanent magnet, and two non-magnetic blocks. The cast iron base body includes two spaced and oppositely arranged base segments. Each of the two base segments has a groove recessed on its opposite side. The inner sidewalls of the two grooves are provided with high-permeability arc bodies. The two high-permeability arc bodies are connected by the two non-magnetic blocks, which are located at opposite ends of the same high-permeability arc body. The non-magnetic blocks extend from the inside of the groove to the outer side of the base segment. The two high-permeability arc bodies and the two non-magnetic blocks form a through hole. The permanent magnet is rotatably disposed in the through hole. One end of the control handle extends from the side of the cast iron base body facing the bottom of the groove into the through hole and connects with the permanent magnet. The outer sides of the permanent magnet, where the N and S poles are located, are slidably connected to the inner surface of the high-permeability arc body. The side of the base segment facing away from the groove sidewall is used to attract the guide rail.
2. The elevator car stop device according to claim 1, characterized in that, Each of the lifting rods is provided with a lifting protrusion located on one side of the magnetic base. Each group of magnetic components has a corresponding lifting protrusion. The lifting protrusion protrudes in the direction of the corresponding control handle. When the lifting rod rises, it can drive the lifting protrusion to pull the corresponding control handle to rotate by a set angle.
3. The elevator car stop device according to claim 2, characterized in that, The upper end of the lifting protrusion has a guide surface that abuts against the control handle, and the guide surface is inclined from bottom to top.
4. The elevator car stop device according to claim 2, characterized in that, Multiple sets of limiting components are provided inside the groove. Each limiting component corresponds to a magnetic component, and each lifting protrusion corresponds to a limiting component. Each limiting component includes two limiting plates, which are spaced apart and parallel to each other in the vertical direction. One end of each limiting plate is connected to the side wall of the groove, and the other end extends toward the lifting rod. The magnetic base and the lifting protrusion are both located between the two limiting plates of the corresponding limiting components. The lifting protrusion can selectively abut against any one of the limiting plates in the limiting components.
5. The elevator car stop device according to any one of claims 1 to 4, characterized in that, The control handle has a first use position and a second use position. When the control handle is in the first use position, the magnetic base is closed. When the control handle is in the second use position, the magnetic base is opened. The control handle can rotate back and forth between the first use position and the second use position. The magnetic component also includes an elastic element, which is connected to both the control handle and the magnetic base. The elastic element always has a tendency to drive the control handle to rotate to the first use position.
6. The elevator car stop device according to claim 1, characterized in that, The magnetic base also includes a first magnetic barrier plate, which is disposed on the side of the cast iron base body facing the bottom of the groove. And / or, the magnetic base further includes a second magnetic barrier plate disposed on the side of the cast iron base body facing the groove opening.
7. The elevator car stop device according to any one of claims 1 to 4, characterized in that, Both of the fixing mechanisms include a fixing plate protruding from the top of the car, and the fixing plate corresponds one-to-one with the lifting rod. The transmission assembly includes two connecting pins and a transmission shaft rotatably connected to the two fixing plates. Both connecting pins can be raised and lowered relative to the fixing plates. The two lifting rods are movably connected to the corresponding fixing plates through the two connecting pins. The connecting pins are driven by the transmission shaft through a crank arm. The crank arm can move relative to the connecting pin. An ear plate is provided between the connecting pin and the transmission shaft on the crank arm. The ear plate is used to connect to the wire rope.
8. The elevator car stop device according to claim 7, characterized in that, The fixing plate is provided with a first waist-shaped hole, the length of which extends vertically. The connecting shaft pin is inserted into the first waist-shaped hole. The end of the crank arm away from the drive shaft is provided with a second waist-shaped hole. The end of the connecting shaft pin away from the lifting rod passes through the second waist-shaped hole and is movably inserted into the first waist-shaped hole.
9. An elevator, comprising a car, characterized in that, It also includes the elevator car stop device according to any one of claims 1 to 8, wherein the elevator car stop device is disposed on the car.