Device and method for automatically triggering speed limiter to act at rated speed

Abstract

The invention discloses a device and method for automatically triggering a speed governor to act at the rated speed, the device for automatically triggering the speed governor to act at the rated speed comprises a swing arm, a clamp with the telescopic length, a motor, a small gear, a power source and a remote control module, the swing arm comprises a beating plate, a telescopic connecting rod and a large gear, and the beating plate and the large gear are connected through the connecting rod; the large gear is in meshed connection with the small gear, the small gear is connected with the driving end of the motor, the motor is fixed to the clamp, the large gear can rotate and is arranged on the speed limiter in a limited mode, the remote control module is connected with the remote controller through wireless signals, and the motor and the remote control module are both connected with a power source. The motor on the speed limiter is remotely controlled through a remote controller, so that the swing arm swings, the beating plate on the swing arm impacts the speed limiter connecting rod, and the speed limiter at the rated speed is finally triggered.

Description

Technical Field

[0001] The present invention relates to a device and method for automatically triggering the action of a speed limiter at the rated speed, belonging to the technical field of elevators. Background Art

[0002] The speed limiter is one of the most important safety protection devices for elevators. In the case of the elevator descending at an overspeed, it triggers the brake (electrical safety circuit open) and the safety gear to act respectively, thereby stopping the car and preventing casualties of the passengers in the car. Therefore, the quality of the safety performance of the speed limiter is very important.

[0003] On April 2, 2023, the State Administration for Market Regulation issued TSG T7001-2023 "Rules for Elevator Supervision and Periodic Inspection". Article A1.3.4 of it stipulates the speed limiter-safety gear test for the car (carrying device). During the supervision inspection, for elevators equipped with progressive safety gears, a load of 125% of the rated load is loaded in the car, and the elevator descends at the rated speed to trigger the speed limiter, so that the speed limiter pulls the safety gear to stop the car. This test requires the elevator to be at the rated speed to trigger the speed limiter.

[0004] During the actual operation process, the inspection personnel manually trigger it, which has a relatively high safety risk. Especially for machine-roomless elevators, the speed limiter is located in the hoistway, and it is more difficult to safely trigger the speed limiter when the elevator is at the rated speed. Therefore, a device for automatically triggering the action of the speed limiter at the rated speed is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to safely trigger the action of the speed limiter when the elevator is at the rated speed.

[0006] To solve the above technical problem, the technical solution of the present invention is to provide a device for automatically triggering the action of the speed limiter at the rated speed, which is characterized by including a swing arm, a length-adjustable fixture, a motor, a small gear, a power supply, and a remote control module. The swing arm includes a striker plate, a telescopic connecting rod, and a large gear. The striker plate and the large gear are connected by the connecting rod. The large gear is meshed with the small gear, and the small gear is connected to the driving end of the motor. The motor is fixed on the fixture. The large gear is rotatable and limitedly arranged on the speed limiter. The remote control module is connected to the remote controller through a wireless signal. Both the motor and the remote control module are connected to the power supply.

[0007] Preferably, it further includes a magnetic plate with strong magnetism. A through hole for limiting the nut arranged on the speed limiter is provided at the central position of the magnetic plate. The magnetic plate is arranged in a hole deviating from the center position inside the large gear, and the magnetic plate is adsorbed on the speed limiter.

[0008] Preferably, there is a gap between the gear and the magnetic plate, and the magnetic plate is rotatably arranged inside the gear.

[0009] Preferably, the through hole at the center of the magnetic plate is an inner pentagonal hole, and the inner pentagonal hole is sleeved on the nut at the center of the speed limiter.

[0010] Preferably, both ends of the fixture are provided with protrusions for clamping the speed limiter.

[0011] Preferably, the connecting rod includes a second connecting rod and a first connecting rod, and the second connecting rod and the first connecting rod are connected by a first length adjustment component; one end of the second connecting rod is sleeved outside one end of the first connecting rod, and one of the second connecting rod and the first connecting rod is provided with a hole at the connected end, and the other is evenly distributed with a plurality of holes, and at least one of the holes on the second connecting rod and the first connecting rod is a threaded hole; the first length adjustment component is a first screw, and one end of the first screw is detachably passed through the holes on one end of the second connecting rod and one end of the first connecting rod and is connected by threads; the other end of the second connecting rod is connected to the large gear, and the other end of the first connecting rod is connected to the striking plate.

[0012] Preferably, the fixture includes a left fixture hand and a right fixture hand, and the left fixture hand and the right fixture hand are connected by a second length adjustment component, and the second length adjustment component is a second screw. The left fixture hand and the right fixture hand are inserted into each other. One of the left fixture hand and the right fixture hand is provided with a hole, and the other is evenly distributed with a plurality of holes, and at least one of the holes on the left fixture hand and the right fixture hand is a threaded hole; one end of the second screw is detachably passed through the holes on one end of the left fixture hand and one end of the right fixture hand and is connected by threads.

[0013] A method for automatically triggering the action of a speed limiter at a rated speed, characterized in that a device for automatically triggering the action of a speed limiter at a rated speed is used, including the following steps:

[0014] When the elevator descends to the rated speed, through remote control by a remote controller, a signal is transmitted to the remote control module, causing the motor to rotate slowly, the small gear drives the large gear to rotate, causing the swing arm to rotate slowly, and the striking plate on the swing arm gradually approaches the rotation envelope of the speed limiter connecting rod on the speed limiter, and finally strikes the speed limiter connecting rod, thereby finally triggering the speed limiter at the rated speed.

[0015] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0016] By remotely controlling the motor on the present invention through a remote controller, causing the swing arm to swing, so that the striking plate on the swing arm strikes the speed limiter connecting rod, thereby finally triggering the speed limiter at the rated speed, avoiding the problem of relatively large safety risks caused by manual triggering by inspectors, and for machine-roomless elevators, the speed limiter is located in the hoistway, and it is more difficult to safely trigger the speed limiter when the elevator is at the rated speed.

[0017] The swing arm is rotationally limited and adsorbed on the speed limiter through a magnetic plate, and the motor and the pinion are clamped on the speed limiter through a fixture, which facilitates the motor to drive the swing arm to rotate, and is convenient for installation and disassembly. When not in use, it can be directly removed.

[0018] Through the first length adjustment component and the second length adjustment component, the lengths of the swing arm and the fixture are adjustable, which is applicable to speed limiters at various sites. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of a device for automatically triggering the action of a speed limiter at a rated speed;

[0020] Figure 2 It is Figure 1 The bottom view of the position of the fixture and the pinion in

[0021] Figure 3 It is a schematic diagram of the use of a device for automatically triggering the action of a speed limiter at a rated speed.

[0022] Among them:

[0023] 1 is a striker plate; 2 is the first length adjustment component; 3 is the second connecting rod; 4 is an internal five-pointed hole; 5 is a large gear; 6 is the right hand of the fixture; 7 is the second length adjustment component; 8 is a pinion; 9 is the left hand of the fixture; 10 is a magnetic plate; 11 is the first connecting rod; 12 is a speed limiter connecting rod; 13 is a motor; 14 is a power supply; 15 is a remote control module. Detailed Embodiment

[0024] To make the present invention more obvious and understandable, the following is a detailed description with preferred embodiments and in conjunction with the drawings.

[0025] The present invention provides a device for automatically triggering the action of a speed limiter at a rated speed, as shown in Figure 1 、 Figure 2 shown, which includes a swing arm, a magnetic plate 10, a motor 13, a pinion 8, a power supply 14, a remote control module 15, and a fixture. Among them, the sizes of the swing arm and the fixture can be adjusted according to the structure of the on-site speed limiter.

[0026] The swing arm includes a striker plate 1, a connecting rod, and a large gear 5, and the striker plate 1 and the large gear 5 are connected by a telescopic connecting rod.

[0027] The magnetic plate 10 contains a strong magnet. The magnetic plate 10 is arranged in a hole at a position deviating from the center in the large gear 5. An internal five-pointed hole 4 is provided at the center position of the magnetic plate 10, and the internal five-pointed hole 4 is used to sleeve the nut at the center position on the speed limiter for positioning, and is adsorbed on the speed limiter through the strong magnet of the magnetic plate 10. There is a gap between the swing arm and the magnetic plate 10 (that is, there is a gap between the large gear 5 and the magnetic plate 10, and the large gear 5 is sleeved outside the magnetic plate 10), and it is in a movable state.

[0028] The motor 13, the power supply 14, and the remote control module 15 are all fixed on the fixture. The motor 13 and the remote control module 15 are both connected to the power supply 14. The two ends of the fixture are provided with protrusions, and by adjusting the length of the fixture, it is used for the limit of the speed limiter, so as to be locked on the speed limiter. The driving end of the motor 13 is fixedly connected to the small gear 8, and the small gear 8 is meshed and connected to the large gear 5 on the swing arm. Among them, the width of the fixture in this embodiment should be at least more than 5 cm. Similar to a brick clamp, it is locked at both ends of the speed limiter, and the force to actuate the speed limiter is very small. As long as the hitting plate 1 touches the rotating flyweight at high speed, it can be achieved. The reduction ratio of the large gear 5 and the small gear 8 is at least 1:10, so that the speed of the swing arm is as small as possible, and at the same time, the acting force of the swing arm is increased.

[0029] In this embodiment, the connecting rod includes a second connecting rod 3 and a first connecting rod 11, and the second connecting rod 3 and the first connecting rod 11 are connected by a first length adjusting component 2.

[0030] Among them, one end of the second connecting rod 3 is sleeved outside one end of the first connecting rod 11. One of the second connecting rod 3 and the first connecting rod 11 is provided with a hole at the end where the two are connected, and the other is provided with a plurality of holes evenly distributed. At least one of the holes on the second connecting rod 3 and the first connecting rod 11 is a threaded hole. The first length adjusting component 2 is a first screw. One end of the first screw is detachably passed through the holes on one end of the second connecting rod 3 and one end of the first connecting rod 11, and is connected by threading. The other end of the second connecting rod 3 is connected to the large gear 5, and the other end of the first connecting rod 11 is connected to the hitting plate 1. If the length needs to be adjusted, unscrew the first screw, insert and pull out the second connecting rod 3 and the first connecting rod 11, adjust the overall length of the second connecting rod 3 and the first connecting rod 11, and then screw the first screw back into the holes of the second connecting rod 3 and the first connecting rod 11.

[0031] The fixture is a structure with adjustable length. The fixture includes a fixture left hand 9 and a fixture right hand 6, and the fixture left hand 9 and the fixture right hand 6 are connected by a second length adjusting component 7. The structure of the second length adjusting component 7 is the same as that of the first length adjusting component 2, and its telescoping principle is also the same, that is, the second length adjusting component 7 is a second screw. The fixture left hand 9 and the fixture right hand 6 are inserted into each other. One of the fixture left hand 9 and the fixture right hand 6 is provided with a hole, and the other is provided with a plurality of holes evenly distributed. At least one of the holes on the fixture left hand 9 and the fixture right hand 6 is a threaded hole. One end of the second screw is detachably passed through the holes on one end of the fixture left hand 9 and one end of the fixture right hand 6, and is connected by threading. If the length needs to be adjusted, unscrew the second screw, insert and pull out the fixture left hand 9 and the fixture right hand 6, adjust the overall length of the fixture left hand 9 and the fixture right hand 6, and then screw the second screw back into the holes of the fixture left hand 9 and the fixture right hand 6.

[0032] During the speed limiter - safety gear test of the car (carriage), a method for automatically triggering the speed limiter to operate at a rated speed includes the following steps:

[0033] When the elevator descends to the rated speed, through remote control, a signal is transmitted to the remote control module 15, causing the motor 13 to rotate slowly. The pinion 8 drives the large gear 5 to rotate, causing the swing arm to rotate slowly. The striker plate 1 protruding from the swing arm gradually approaches the rotational envelope of the speed limiter link 12 on the speed limiter, and finally impacts the speed limiter link 12, thereby ultimately triggering the speed limiter at the rated speed.

Claims

1. A device for automatically triggering the speed limiter at rated speed, characterized in that: The invention comprises a swing arm, a clamp with a retractable length, a motor (13), a pinion (8), a power source (14), and a remote control module (15). The swing arm comprises a striking plate (1), a retractable connecting rod, and a large gear (5). The striking plate (1) and the large gear (5) are connected via a connecting rod. The large gear (5) is meshedly connected with the pinion (8). The pinion (8) is connected with a driving end of the motor (13). The motor (13) is fixed on the clamp. The large gear (5) is rotatable and limited on a speed limiter. The remote control module (15) is connected with a remote controller via a wireless signal. The motor (13) and the remote control module (15) are both connected with the power source (14).

2. A device for automatically triggering the action of a speed limiter at a rated speed as described in claim 1, further comprising a magnetic plate (10) with strong magnetism, a through hole for limiting the nut on the speed limiter is provided at the center position of the magnetic plate (10), the magnetic plate (10) is arranged in a hole deviating from the center position in the large gear (5), and the magnetic plate (10) is adsorbed on the speed limiter.

3. A device for automatically triggering the speed limiter at rated speed as claimed in claim 2, characterized in that: A gap is provided between the gear (5) and the magnetic plate (10), and the magnetic plate (10) is rotatably arranged inside the gear (5).

4. A device for automatically triggering the speed limiter at rated speed as claimed in claim 2, characterized in that: The through hole at the center of the magnetic plate (10) is an inner pentagonal hole (4), and the inner pentagonal hole (4) is sleeved on a nut at the center of the speed limiter.

5. A device for automatically triggering the speed limiter at rated speed as claimed in claim 1, characterized in that: Both ends of the clamp are provided with protrusions for clamping the speed limiter.

6. A device for automatically triggering the speed limiter at rated speed as claimed in claim 1, characterized in that: The connecting rod comprises a second connecting rod (3) and a first connecting rod (11), and the second connecting rod (3) and the first connecting rod (11) are connected via a first length adjustment component (2); one end of the second connecting rod (3) is sleeved outside one end of the first connecting rod (11), one of the second connecting rod (3) and the first connecting rod (11) is provided with a hole at one end where the two are connected, and the other is evenly distributed with a plurality of holes, and the holes on at least one of the second connecting rod (3) and the first connecting rod (11) are threaded holes; the first length adjustment component (2) is a first screw, one end of the first screw is detachably inserted into the holes on one end of the second connecting rod (3) and one end of the first connecting rod (11), and is connected via a thread; the other end of the second connecting rod (3) is connected to a large gear (5), and the other end of the first connecting rod (11) is connected to a beating plate (1).

7. A device for automatically triggering the speed limiter at rated speed as claimed in claim 1, characterized in that: The clamp comprises a left hand (9) and a right hand (6) of the clamp. The left hand (9) and the right hand (6) of the clamp are connected by a second length adjustment component (7). The second length adjustment component (7) is a second screw. The left hand (9) and the right hand (6) of the clamp are plugged into each other. One of the left hand (9) and the right hand (6) of the clamp is provided with a hole, and the other is evenly distributed with a plurality of holes. At least one of the holes on the left hand (9) and the right hand (6) of the clamp is a threaded hole. One end of the second screw is detachably inserted into the holes on one end of the left hand (9) and the right hand (6) of the clamp, and is connected by threads.

8. A method for automatically triggering a speed limiter at a rated speed, characterized in that: Using a device for automatically triggering a speed limiter at a rated speed as described in any one of claims 1 to 7, comprising the following steps: When the elevator reaches the rated speed when descending, the remote controller transmits a signal to the remote control module (15), causing the motor (13) to rotate slowly, and the small gear (8) drives the large gear (5) to rotate, causing the swing arm to rotate slowly, and the striking plate (1) on the swing arm gradually approaches the rotation envelope of the speed limiter connecting rod (12) in the speed limiter, and finally hits the speed limiter connecting rod (12), thereby finally triggering the speed limiter at the rated speed.

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