A lock device for an elevator and an elevator

Abstract

The present application relates to the technical field of lifting equipment, and in particular to an elevator locking device and an elevator, wherein the elevator locking device includes a speed limiter and a brake, a reciprocating mechanism is provided between the speed limiter and the brake, the reciprocating mechanism is driven by the speed limiter, and the reciprocating mechanism is used to intermittently hinder the braking of the brake; the reciprocating mechanism includes a first rotating shaft, the first rotating shaft is connected to the sheave shaft of the speed limiter by transmission, a turntable is provided on the first rotating shaft, an arc-shaped flange is provided on one disk surface of the turntable, the arc-shaped flange is provided with a notch section, a limit rod is provided on the other side of the upper part of the brake arm, and a convex stopper matched with the arc-shaped flange is provided at the end of the limit rod. The present application links the elevator speed limiter and the brake through the reciprocating mechanism to form a new type of elevator locking device, so that the elevator can automatically control the elevator locking time in the case of power failure, so that the elevator car can always stop near the elevator exit, the structure is simple, the practicability is high, and it has great promotion and practical value.

Description

Technical Field

[0001] The present application relates to the technical field of lifting equipment, and in particular to an elevator locking device and an elevator. Background Art

[0002] Mechanical elevators usually have an electric drive mechanism and an electromagnetic brake clutch mechanism driven by a motor to lift the elevator car via a steel cable. During operation, if a fire, power outage, or communication interruption occurs, the elevator brake will automatically lock the elevator position to prevent the elevator from falling. However, this accidental lock often causes the elevator car to be locked between two floors, and the elevator car is far away from the elevator exit of the floor. If the elevator car door is opened, the trapped person needs to jump or climb to escape from the elevator car, which is easy to cause accidental injuries and there is a risk of falling into the elevator shaft. Not only is it difficult for the trapped passengers to save themselves and escape in an emergency, but it also increases the difficulty of rescue by rescue personnel. Summary of the invention

[0003] In order to solve the problem that when the elevator loses power unexpectedly, the elevator car cannot be accurately locked at the elevator exit and the passengers in the elevator find it difficult to leave the elevator shaft, the present application provides an elevator locking device and an elevator.

[0004] The present application provides an elevator locking device and an elevator, which adopts the following technical solutions:

[0005] A locking device for an elevator comprises a speed limiter and a brake, a reciprocating mechanism is arranged between the speed limiter and the brake, the reciprocating mechanism is driven by the speed limiter, and the reciprocating mechanism is used to intermittently hinder the braking of the brake; the reciprocating mechanism comprises a first rotating shaft, the first rotating shaft is connected to the rope pulley shaft of the speed limiter by transmission, a turntable is arranged on the first rotating shaft, an arc-shaped flange is arranged on one disk surface of the turntable, the arc-shaped flange is provided with a notch section, a brake arm of the brake is arranged on one side of the arc-shaped flange, one side of the upper part of the brake arm is connected to the electromagnetic top cylinder of the brake, a limit rod is arranged on the other side of the upper part of the brake arm, and a convex stop cooperating with the arc-shaped flange is arranged at the end of the limit rod, when the upper part of the brake arm swings to a position away from the brake, the limit rod does not contact the turntable, and the convex stop of the limit rod enters the inner side of the arc-shaped flange.

[0006] By adopting the above technical solution, the reciprocating mechanism controls the elevator car to stop accurately near the elevator exit when the power is unexpectedly cut off, so that the trapped people can escape from the elevator car from the elevator exit. Because the speed limiter sheave shaft rotates with the elevator car, the angular velocity of the first shaft connected to the sheave shaft is related to the lifting distance of the elevator car. At this time, the first shaft drives and changes the angular velocity transmitted by the sheave shaft, so that the elevator car is lifted or lowered by one floor, and the turntable rotates one circle accordingly, so that the notch section on the turntable corresponds to the position of the elevator car when it is lifted or lowered near the elevator exit, so that the brake is only applied when the turntable rotates to the notch section, so that the elevator car can stop accurately near the elevator exit in various unexpected situations.

[0007] Optionally, a speed change tower wheel is provided on the first rotating shaft, a first transmission wheel is provided on the pulley shaft of the speed limiter, and the first transmission wheel is connected to the speed change tower wheel.

[0008] By adopting the above technical solution, the speed change tower wheel is connected to the rope pulley shaft, and the angular velocity transmitted by the rope pulley shaft can be adjusted according to the floor height, so as to achieve the effect that the turntable rotates one circle corresponding to the elevator car rising or falling one floor, thereby improving the application range and practicality of the equipment.

[0009] Optionally, a side of the convex stop close to the middle of the limiting rod is provided with an arc surface, and an inner circular surface matching the arc surface is provided on the inner side surface of the arc-shaped flange.

[0010] By adopting the above technical solution, the cooperation between the arc surface and the inner circular surface can reduce the friction between the cam and the arc flange, avoid excessive resistance causing the rope pulley shaft to slip or stop, and at the same time reduce wear and tear and increase the service life of the equipment.

[0011] Optionally, a detachable arc-shaped slide is connected to the inner side of the arc-shaped flange, an inner circular surface is provided on the inner side of the arc-shaped slide, a detachable sliding block is provided on the convex stopper, and an arc surface is provided on one side of the arc-shaped slide and the sliding block.

[0012] By adopting the above technical solution, the assembled structure of the arc-shaped flange and the arc-shaped sliding piece, the convex stop and the sliding block provides convenience for maintenance and replacement after wear.

[0013] Optionally, a sheet groove for installing an arc-shaped sliding sheet is provided on the inner side of the arc-shaped flange, and the arc-shaped flanges on both sides of the notch section are provided with guiding curved surfaces.

[0014] By adopting the above technical solution, the sheet groove allows the inner side surface of the arc-shaped flange to remain flat after the arc-shaped sliding sheet is installed, and cooperates with the guide curved surface to further reduce the wear between the cam and the arc-shaped flange.

[0015] Optionally, a reciprocating mechanism is respectively provided on the left and right sides of the brake, and the upper parts of the left and right brake arms of the brake are provided with limit rods that cooperate with the reciprocating mechanism turntable, and the first rotating shafts of the two reciprocating mechanisms are connected through a sprocket transmission pair.

[0016] By adopting the above technical solution, there is only one reciprocating mechanism. When the power is off, if the elevator car is not near the elevator exit, the brake arm that is not connected to the reciprocating mechanism will be locked and braked, causing the elevator car to slow down in advance. Although the safety is improved, this will accelerate the wear of the brake arm and brake shoe on that side, shorten the maintenance cycle, and increase the maintenance cost. The double reciprocating mechanisms on the left and right sides can make the two brake arms of the brake work synchronously, avoiding excessive wear of the brake arm and brake shoe on one side, and improving the stability of the equipment.

[0017] Optionally, a rope clamping device is provided on one side of the limit rod, and the rope clamping device includes a shell, an inner bottom is provided in the shell, a pressure rod is provided on the upper side of the inner bottom, one end of the pressure rod passes through the shell and abuts against the arc-shaped flange of the turntable, a suspension wire is passed between the pressure rod and the inner bottom, and one end of the suspension wire is connected to the end of the pawl of the speed limiter.

[0018] By adopting the above technical solution, when the brake swing arm is stuck by foreign objects and the brake cannot be applied, the elevator car descends and triggers the speed limiter pawl to press against the ratchet. At this time, if the pressure rod is not in the notch section, that is, the elevator car is not near the elevator exit, the arc-shaped flange will press the pressure rod to tighten the suspension wire, so that the pawl cannot be pressed against the ratchet of the pulley shaft. Until the elevator car descends to the vicinity of the elevator exit, the pressure rod enters the notch section, the suspension wire is loosened, the pawl engages with the ratchet, the pulley stops rotating, the safety clamp is triggered, the elevator car stops descending, and the elevator car stops at the elevator exit position.

[0019] Optionally, the limiting rod is provided with a length adjustment mechanism.

[0020] By adopting the above technical solution, the length adjustment mechanism can adjust the length of the limit rod to ensure that when power is turned on, the limit rod convex stop can be just located on the inner side of the arc flange without hindering the rotation path of the arc flange, thereby avoiding wear between the limit rod convex stop and the arc flange.

[0021] Optionally, a pressure sensor is provided between the convex stopper and the limit rod, the pressure sensor is communicatively connected to a controller, and the controller is connected to an alarm.

[0022] By adopting the above technical solution, when the brake is energized, the elevator car will stop at the elevator exit. Therefore, during normal elevator operation, the cam will be located on the inner side of the arc-shaped flange and will not squeeze the arc-shaped flange. Therefore, when the pressure sensor feeds back the pressure value, it means that the elevator car starts braking before it reaches the elevator exit, indicating that the notch section of the turntable does not correspond to the elevator exit position, and an operating error occurs in the equipment. At this time, the controller receives the pressure value of the pressure sensor and controls the alarm to alert the maintenance personnel to perform maintenance.

[0023] An elevator, comprising a car, a track frame, a traction sheave, a traction motor, a counterweight, a tensioning pulley, a safety gear, an electrical control system and a car locking device of the elevator as described above. The car is slidably arranged on the track frame. The traction sheave, the traction motor, the car locking device and the electrical control system are arranged above the track frame. The traction motor and the car locking device are both electrically connected to the electrical control system. The brake of the car locking device is connected to the traction sheave set. The traction sheave is driven by the traction motor. A traction rope is connected to the upper part of the car. One end of the traction rope is connected to the counterweight through the traction sheave. A traction rope is arranged on the rope sheave of the speed limiter of the car locking device, and the traction rope is connected to the tensioning pulley arranged at the bottom of the track frame. The safety gear is arranged at the bottom of the car and is connected to the traction rope.

[0024] By adopting the above technical solution, when the power is off, if the elevator car is not near the elevator exit, the car locking device can play a role of delaying the car locking, so that the elevator car continues to descend to the vicinity of the nearest elevator exit below and then performs car locking braking, ensuring that the elevator car can accurately stop near the elevator exit in various working conditions and emergencies, enabling the passengers in the elevator car to be rescued faster and more safely and improving the safety of the elevator.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: The present application links the elevator speed limiter and the brake through a reciprocating mechanism to form a new car locking device, enabling the elevator to automatically control the car locking timing when the power is off, so that the elevator car can always stop near the elevator exit. The structure is simple, the practicability is high, and it has great popularization and practical value. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the elevator of the present application.

[0027] Figure 2 It is a schematic structural diagram of the car locking device of the present application.

[0028] Figure 3 It is Figure 2 An enlarged view of part A in

[0029] Figure 4 It is a schematic structural diagram of the limit rod of the present application.

[0030] Figure 5 It is a schematic structural diagram of the reciprocating mechanism of the present application.

[0031] Figure 6 It is a schematic structural diagram of the rope clamping device of the present application.

[0032] Description of the reference numerals: 1, speed limiter; 11, rope wheel shaft; 12, rope wheel; 13, first driving wheel; 14, pawl; 15, ratchet wheel; 16, centrifugal weight; 2, brake; 21, electromagnetic jack; 22, brake arm; 221, limit rod; 222, convex block; 223, slider; 224, arc surface; 225, length adjusting mechanism; 2251, threaded rod; 226, pressure sensor; 23, brake spring; 3, reciprocating mechanism; 31, bracket; 32, first rotating shaft; 33, turntable; 331, arc-shaped flange; 332, sheet groove; 333, arc-shaped sliding piece; 334, inner circular surface; 335, notch section; 336, guiding curved surface; 34, variable speed pulley; 35, sprocket transmission pair; 4, rope clamping device; 41, housing; 411, inner bottom; 412, pressing rod; 413, suspension line; 510, car; 520, track frame; 530, traction sheave; 540, traction motor; 560, counterweight; 570, traction rope; 580, tensioning pulley; 590, safety gear; 600, electrical control system. Detailed implementation manners

[0033] The following further describes the present application in detail with reference to the Figures 1-6 accompanying drawings.

[0034] Refer to Figure 1 In an embodiment of the present application, an elevator is disclosed, including a car 510, a track frame 520, a traction sheave 530, a traction motor 540, a counterweight 560, a tensioning pulley 580, a safety gear 590, an electrical control system 600 and a car locking device. The car 510 is slidably arranged on the track frame 520. The traction sheave 530, the traction motor 540, the car locking device and the electrical control system 600 are arranged above the track frame 520. The traction motor 540 and the car locking device are both electrically connected to the electrical control system 600. The brake 2 of the car locking device is assembled with the traction sheave 530. The traction sheave 530 is driven by the traction motor 540. A traction rope is connected to the upper part of the car 510. One end of the traction rope is connected to the counterweight 560 through the traction sheave 530. A traction rope 570 is arranged on the rope wheel 12 of the speed limiter 1 of the car locking device. The traction rope 570 is connected to the tensioning pulley 580 arranged at the bottom of the track frame 520. The safety gear 590 is arranged at the bottom of the car 510 and is connected to the traction rope 570.

[0035] Refer to Figures 2-4, wherein, the speed limiter 1 includes a centrifugal weight 16, a rope sheave 12, a rope sheave shaft 11, a ratchet wheel 15, a pawl 14, etc. installed inside the outer plate of the speed limiter 1. When the elevator descends overspeed, the centrifugal weight 16 is lifted outwards under the action of centrifugal force, touches the switch trigger to cut off the elevator safety circuit, and makes the brake 2 of the traction sheave 530 de-energize and brake. While the centrifugal weight 16 is lifted outwards, it drives the pawl 14 to approach the tooth groove of the ratchet wheel 15 until the ratchet wheel 15 meshes with the pawl 14, stopping the rotation of the rope sheave 12 coaxial with the ratchet wheel 15. Under the frictional force of the rope sheave 12, the traction rope 570 on the rope sheave 12 lifts the safety clamp 590, causing the elevator car 510 to stop. For details, reference can be made to the existing patent CN202222241174X, an elevator speed limiter.

[0036] Refer to Figures 2-4 , in this embodiment, the brake 2 adopts a drum brake 2 for an elevator, which includes a brake arm 22, a brake spring 23, an electromagnetic jack 21, etc. For details, reference can be made to the existing patent CN115285875A, an elevator brake.

[0037] Refer to Figures 2-4The ladder locking device includes a speed limiter 1 and a brake 2. A reciprocating mechanism 3 is provided between the speed limiter 1 and the brake 2. The reciprocating mechanism 3 is driven by the speed limiter 1 and is used to intermittently prevent the brake 2 from braking. The reciprocating mechanism 3 includes a bracket 31. The bracket 31 is provided with a first rotating shaft 32. The first rotating shaft 32 is connected to the sheave shaft 11 of the speed limiter 1 by transmission. Specifically, a speed change tower wheel 34 is provided on the first rotating shaft 32. The sheave shaft 11 of the speed limiter 1 is provided with a first transmission wheel 13. The first transmission wheel 13 is chain-connected with the speed change tower wheel 34. In order to achieve the purpose of adjusting the angular velocity transmitted by the sheave shaft 11, in addition to the speed change tower wheel 34 used in this embodiment, a gearbox can also be used. The gearbox has a strong adjustment function, but because the floor height is generally between 3-3.5 meters, the range is narrow and relatively fixed, so the use of the speed change tower wheel 34 is undoubtedly more cost-effective. A rotating disk 33 is provided on the first rotating shaft 32, and an arc-shaped flange 331 is provided on one surface of the rotating disk 33, and a notch section 335 is provided on the arc-shaped flange 331. The brake arm 22 of the brake 2 is provided on one side of the arc-shaped flange 331, and one side of the upper part of the brake arm 22 is connected to the electromagnetic top cylinder 21 of the brake 2, and a limiting rod 221 is provided on the other side of the upper part of the brake arm 22, and the limiting rod 221 is provided with a length adjustment mechanism 225, and the length adjustment mechanism 225 is composed of a rod body with a threaded sleeve and a threaded rod 2251 connected to the upper part of the brake arm 22. A convex stopper 222 cooperating with the arc-shaped flange 331 is provided at the end of the limiting rod 221, and specifically, the convex stopper 222 is provided with a detachable slider 223, and a curved surface 224 is provided on one side of the slider 223 close to the middle part of the limiting rod 221. A sheet groove 332 is provided on the inner side of the arc-shaped flange 331, and a detachable arc-shaped slide 333 is provided in the sheet groove 332. The arc-shaped flange 331 on both sides of the notch section 335 is provided with a guide curved surface 336, and an inner circular surface 334 is provided on the inner side of the arc-shaped slide 333. A pressure sensor 226 is provided between the convex stop 222 and the limit rod 221. The pressure sensor 226 is connected to a controller for communication, and the controller is connected to an alarm. When the upper part of the brake arm 22 swings to a position away from the brake 2, the limit rod 221 does not contact the rotating disk 33, and the convex stop 222 of the limit rod 221 enters the inner side of the arc-shaped flange 331. Figure 6 A rope clamping device 4 is provided on one side of the limit rod 221, and the rope clamping device 4 includes a shell 41, an inner bottom 411 is provided in the shell 41, a pressure rod 412 is provided on the upper side of the inner bottom, one end of the pressure rod 412 passes through the shell 41, and is provided with an umbrella head that abuts against the arc flange 331 of the rotating disk 33, a suspension wire 413 is passed between the pressure rod 412 and the inner bottom, and one end of the suspension wire 413 is connected to the end of the pawl 14 of the speed limiter 1.

[0038] Reference Figure 2, a reciprocating mechanism 3 is provided on each of the left and right sides of the brake 2, that is, a reciprocating mechanism 3 is provided between the speed limiter 1 and the brake 2 and on the side of the brake 2 away from the speed limiter 1. Limit rods 221 that cooperate with the turntables 33 of the reciprocating mechanism 3 are provided on the upper parts of the left and right brake arms 22 of the brake 2. The first rotating shafts 32 of the two reciprocating mechanisms 3 are drivingly connected through a sprocket transmission pair 35.

[0039] The implementation principle of an elevator in an embodiment of the present application is as follows: When the rope wheel shaft 11 of the rope wheel 12 of the speed limiter 1 in the present application rotates following the lifting and lowering of the elevator car 510, the rope wheel shaft 11 drives the first rotating shaft 32 of the reciprocating mechanism 3 to rotate. The arc-shaped flange 331 on the turntable 33 of the first rotating shaft 32 makes a reciprocating rotation. When the brake 2 is energized, the brake arm 22 is pushed out by the electromagnetic jack 21 and swings outward, making the limit rod 221 approach the turntable 33. The convex block 222 of the limit rod 221 just enters the inner side of the arc-shaped flange 331 from the notch section 335 without affecting the normal rotation of the turntable 33. When the brake 2 is de-energized, the electromagnetic jack 21 loses its thrust, and the brake arm 22 tends to swing inward under the action of the brake spring 23, making the limit rod 221 move away from the turntable 33. At this time, the convex block 222 of the limit rod 221 has to leave the inner side of the arc-shaped flange 331, but the convex block 222 is blocked by the arc-shaped flange 331. Only when the turntable 33 rotates to the notch section 335 can the convex block 222 of the limit rod 221 leave the arc-shaped flange 331, causing the brake arm 22 to swing inward to the initial position, and making the brake shoe on the brake arm 22 press against the traction sheave 530 again for braking.

[0040] Because the rope wheel shaft 11 of the speed limiter 1 rotates following the lifting and lowering of the elevator car 510, the lifting and lowering distance of the elevator car 510 is correlated with the rotation angle of the rope wheel shaft 11 of the speed limiter 1. Therefore, the angular velocity of the first rotating shaft 32 drivingly connected to the rope wheel shaft 11 is also correlated with the lifting and lowering distance of the elevator car 510. At this time, the angular velocity transmitted by the rope wheel shaft 11 is transmitted and changed through the first rotating shaft 32, so that when the elevator car 510 ascends or descends one floor, the turntable 33 rotates one full circle correspondingly. The notch section 335 on the turntable 33 is corresponding to the position when the elevator car 510 ascends to near the elevator exit. Therefore, when the elevator encounters an accidental power failure, the brake 2 brakes only when the turntable 33 rotates to the notch section 335, enabling the elevator car 510 to stop near the elevator exit.

[0041] Specifically, during the installation or maintenance and debugging of the elevator, when the elevator car 510 is raised or lowered to the vicinity of the elevator exit, the notch section 335 of the turntable 33 is adjusted to be just toward the limit rod 221. Therefore, when a power outage occurs, the electromagnetic top cylinder 21 loses thrust, and when the brake 2 needs to re-tighten the brake, if the limit rod 221 is not in the notch section 335, that is, the elevator car 510 is not near the elevator exit, the convex stop 222 of the limit rod 221 will be blocked by the arc flange 331 and cannot move toward the brake 2 direction. The brake arm 22 of the brake 2 cannot clamp the brake, and the elevator car 510 will continue to descend. The turntable 33 continues to rotate as the elevator car 510 descends, until the notch section 335 of the turntable 33 encounters the convex stop 222 of the limit rod 221, and the brake arm 22 of the brake 2 can re-tighten the brake, so that the elevator car 510 stops near the elevator exit.

[0042] In addition, in addition to the more common sudden power outage situation, when the braking force is insufficient, that is, the brake 2 is already tightened but the elevator car 510 is still sliding down, the turntable 33 rotates, and the arc flange 331 of the turntable 33 is blocked by the end of the convex stop 222 of the limit rod 221 that has not completely left the turntable 33, and stops rotating, that is, the first rotating shaft 32 stops rotating, and the sheave shaft 11 connected to it also stops rotating. The sheave shaft 11 stops rotating, causing the traction rope 570 on the sheave 12 to stop moving, and the traction rope 570 pulls the safety clamp 590 below to brake the elevator car 510.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An elevator locking device, Features: The invention comprises a speed limiter (1) and a brake (2), wherein a reciprocating mechanism (3) is arranged between the speed limiter (1) and the brake (2), the reciprocating mechanism (3) is driven by the speed limiter (1), and the reciprocating mechanism (3) is used to intermittently hinder the brake (2) from braking; the reciprocating mechanism (3) comprises a first rotating shaft (32), the first rotating shaft (32) is drivingly connected to a rope pulley shaft (11) of the speed limiter (1), a rotating disk (33) is arranged on the first rotating shaft (32), a curved flange (331) is arranged on a disk surface of the rotating disk (33), a notch section (335) is arranged on the curved flange (331), and the brake The brake arm (22) of the brake (2) is arranged on one side of the arc-shaped flange (331), one side of the upper part of the brake arm (22) is connected to the electromagnetic top cylinder (21) of the brake (2), and the other side of the upper part of the brake arm (22) is provided with a limit rod (221), and the end of the limit rod (221) is provided with a convex stopper (222) that cooperates with the arc-shaped flange (331), when the upper part of the brake arm (22) swings to a position away from the brake (2), the limit rod (221) does not contact the rotating disk (33), and the convex stopper (222) of the limit rod (221) enters the inner side of the arc-shaped flange (331); A speed change tower wheel (34) is provided on the first rotating shaft (32), a first transmission wheel (13) is provided on the rope pulley shaft (11) of the speed limiter (1), and the first transmission wheel (13) is connected to the speed change tower wheel (34).

2. The elevator locking device according to claim 1, Features: A side of the convex stop (222) close to the middle of the limiting rod (221) is provided with an arc surface (224), and an inner side surface of the arc-shaped flange (331) is provided with an inner circular surface (334) matching the arc surface (224).

3. The elevator locking device according to claim 2, Features: A detachable arc-shaped slide plate (333) is connected to the inner side of the arc-shaped flange (331), an inner circular surface (334) is provided on the inner side of the arc-shaped slide plate (333), a detachable slide plate (223) is provided on the convex stopper (222), and an arc surface (224) is provided on one side of the arc-shaped slide plate (333) and the slide plate (223).

4. The elevator locking device according to claim 3, Features: A sheet groove (332) for installing the arc-shaped sliding sheet (333) is provided on the inner side of the arc-shaped flange (331), and guide curved surfaces (336) are provided on the arc-shaped flange (331) on both sides of the notch section (335).

5. The elevator locking device according to claim 1, Features: A reciprocating mechanism (3) is provided on the left and right sides of the brake (2), respectively; a limit rod (221) cooperating with a rotating disk (33) of the reciprocating mechanism (3) is provided on the upper parts of the left and right brake arms (22) of the brake (2); and the first rotating shafts (32) of the two reciprocating mechanisms (3) are connected in transmission via a sprocket transmission pair (35).

6. The elevator locking device according to claim 1, Features: A rope clamping device (4) is provided on one side of the limit rod (221), the rope clamping device (4) comprising a housing (41), an inner bottom (411) being provided in the housing (41), a pressure rod (412) being provided on the upper side of the inner bottom, one end of the pressure rod (412) passing through the housing (41) and abutting against an arc-shaped flange (331) of the rotating disk (33), a suspension wire (413) passing between the pressure rod (412) and the inner bottom, one end of the suspension wire (413) being connected to an end of a ratchet (14) of the speed limiter (1).

7. The elevator locking device according to claim 1, Features: The limiting rod (221) is provided with a length adjustment mechanism (225).

8. The elevator locking device according to claim 1, Features: A pressure sensor (226) is provided between the convex stopper (222) and the limiting rod (221), and the pressure sensor (226) is communicatively connected to a controller, and the controller is connected to an alarm.

9. An elevator, Features: The invention comprises a car (510), a track frame (520), a traction wheel (530), a traction motor (540), a counterweight (560), a tensioner (580), a safety clamp (590), an electrical control system (600), and an elevator locking device of an elevator as claimed in claim 1, wherein the car (510) is slidably arranged on the track frame (520), the traction wheel (530), the traction motor (540), the elevator locking device and the electrical control system (600) are arranged above the track frame (520), and the traction motor (540) and the elevator locking device are connected to the electrical control system (600). 0), the brake (2) of the elevator locking device is assembled with the traction wheel (530), the traction wheel (530) is driven by the traction motor (540), the upper part of the car (510) is connected with a traction rope, one end of the traction rope is connected to the counterweight (560) through the traction wheel (530), a traction rope (570) is provided on the rope wheel (12) of the speed limiter (1) of the elevator locking device, the traction rope (570) is connected to the tensioning wheel (580) arranged at the bottom of the track frame (520), and a safety clamp (590) is arranged at the bottom of the car (510) and connected to the traction rope (570).

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