Elevator brake protection system

Abstract

The present application relates to elevator brake field, especially to a kind of elevator brake protection system, including elevator brake disc, including brake lever, fixed seat and the driving device for driving the brake lever, brake lever is through fixed seat, at least one hole slot is provided on elevator brake disc and matched with brake lever, driving device is electromagnet, brake lever is provided with the metal plate that is attracted to electromagnet, brake lever is through electromagnet, brake lever is equipped with spring, spring is between electromagnet and metal plate.Elevator normal stop elevator, electromagnet is powered off, metal plate is driven brake lever and pops out outward under the spring elastic force and is supported on elevator brake disc, at this time if elevator brake failure slips car, elevator brake disc starts to slip car rotation, brake lever will be embedded in the hole slot on elevator brake disc due to elevator brake disc rotation, realize the mechanical brake of door bolt type, further can effectively protect the life of passenger, avoid the loss caused by the damage of equipment due to collision, suitable for wide promotion.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator braking, in particular to an elevator braking protection system. BACKGROUND

[0002] The existing elevator braking system will cause serious consequences of passenger injury and death when the elevator braking system fails due to many reasons such as not timely replacement due to wear and tear, not in place gap adjustment, and not in place maintenance. However, the existing elevator braking system does not have a second set of protection measures, which has caused many personnel injury accidents in the country, and economic losses due to equipment damage. SUMMARY

[0003] The elevator braking protection system provided by the present application realizes mechanical braking in the case of failure of the original elevator braking system, can effectively protect the life safety of the elevator passengers, avoid losses caused by equipment damage due to top collision, and solves the above problems.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] An elevator braking protection system, comprising an elevator brake disc, a brake lever, a fixed seat, and a driving device for driving the brake lever, the brake lever penetrating the fixed seat, and the elevator brake disc being provided with at least one hole groove matched with the brake lever.

[0006] Preferably, the driving device is an electromagnet, the brake lever is provided with a metal plate that is attracted to the electromagnet, and the brake lever penetrates the electromagnet.

[0007] Preferably, the brake lever is sleeved with an elastic element, the elastic element is a spring, and the spring is located between the electromagnet and the metal plate.

[0008] Preferably, the fixed seat is fixedly connected with the body of a traction machine, and the fixed seat is located between the elevator brake disc and the metal plate.

[0009] Preferably, it further comprises a travel switch, and one end of the brake lever away from the elevator brake disc is in contact with the travel switch.

[0010] Preferably, the brake lever is made of metal.

[0011] Preferably, it further comprises a control circuit board, the control circuit board is connected with the electromagnet through a power line, and connected with the travel switch through a signal line, and the control circuit board is further provided with a maintenance operation control system.

[0012] Preferably, the driving device is an electric telescopic rod.

[0013] The present application has the following advantages:

[0014] The present application comprises an elevator brake disc, a brake lever, a fixed seat and a driving device for driving the brake lever, the brake lever penetrates the fixed seat, the elevator brake disc is provided with at least one hole groove matched with the brake lever, the driving device is an electromagnet, the brake lever is provided with a metal plate attracted to the electromagnet, the brake lever penetrates the electromagnet, the brake lever is sleeved with a spring, and the spring is located between the electromagnet and the metal plate. When the elevator normally stops, the electromagnet is powered off within 1-3 seconds after the brake contactor of the elevator itself is released, the metal plate drives the brake lever to pop out outward under the spring force and abuts against the elevator brake disc, and a travel switch acts at the same time. If the brake lever is not retracted due to a fault, the travel detection switch acts to make the elevator unable to run, thereby playing a role of a door lock detection signal and protecting the safety of equipment. At this time, if the elevator brake fails and the elevator starts to slide, the brake disc starts to rotate, the brake lever is embedded in the hole groove on the brake disc due to the rotation of the brake disc, mechanical braking in the form of a door bolt is realized, the life of the elevator passengers can be effectively protected, the loss caused by the damage of the equipment due to the collision can be avoided, and the present application is suitable for wide promotion. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the embodiment 1 of the present application.

[0016] Figure 2 It is a structural schematic diagram of the control circuit board of the present application.

[0017] Figure 3 It is a structural schematic diagram of the embodiment 2 of the present application.

[0018] Figure 4 It is a structural schematic diagram of the embodiment 3 of the present application.

[0019] In the figure: 1-elevator brake disc, 2-brake lever, 3-metal plate, 4-fixed seat, 5-electromagnet, 6-spring, 7-travel switch, 10-electric telescopic rod, 11-hole groove, 51-power line, 12-original brake device of the elevator, 13-electromagnetic device, 14-telescopic rod, 15-controller, 16-detection switch. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0021] Embodiment 1

[0022] Reference Figure 1 and 2The elevator brake protection system comprises an elevator brake disc 1, a brake lever 2 made of metal, a metal plate 3, a fixed seat 4, a travel switch 7 and a driving device for driving the brake lever 2, the brake lever 2 penetrates through the fixed seat 4, the fixed seat 4 is located between the elevator brake disc 1 and the metal plate 3 and is fixedly connected with the body of the hoisting machine. The elevator brake disc 1 is provided with at least one hole slot 11 matched with the brake lever 2, the more the number of the hole slots 11 is, the shorter the braking time is, and four hole slots 11 are arranged in the embodiment. The driving device is preferably an electromagnet 5, the brake lever 2 is provided with the metal plate 3 attracted by the electromagnet 5, and the end of the brake lever 2 away from the elevator brake disc 1 penetrates through the electromagnet 5 and is in contact with the travel switch 7. The brake lever 2 is sleeved with an elastic element, preferably a spring 6, the spring 6 is located between the electromagnet 5 and the metal plate 3 and is used for driving the brake lever 2. The control circuit board is further provided with a maintenance operation control system.

[0023] Working principle:

[0024] When the elevator normally stops, the brake contactor of the elevator is released, the electromagnet 5 is powered off within 1-3 seconds, the metal plate 3 drives the brake lever 2 to pop out outward under the elastic force of the spring 6 and abuts against the elevator brake disc 1, the brake lever 2 is separated from the travel switch 7, and the travel switch 7 is actuated, if the brake lever 2 is not retracted due to the failure of the electromagnet 5 to attract the metal plate 3, the travel switch 7 is actuated to make the elevator unable to run, thereby playing a role of door lock detection signal and protecting the safety of the equipment. At this time, if the elevator brake fails and the elevator starts to slide, the elevator brake disc 1 starts to rotate, the brake lever 2 is embedded in the hole slot 11 on the elevator brake disc 1 due to the rotation of the elevator brake disc 1, mechanical braking in the form of door bolt is realized, the life of the elevator passengers can be effectively protected, the loss caused by the damage of the equipment due to the collision is avoided, and the elevator brake protection system is suitable for wide promotion.

[0025] Embodiment 2

[0026] Reference Figure 3 The elevator brake protection system is different from the embodiment 1 in that the driving device is an electric telescopic rod 10, the brake lever 2 is connected with the output end of the electric telescopic rod 10, when the elevator normally stops, the brake contactor of the elevator is released, the electric telescopic rod 10 drives the brake lever 2 to extend outward and abut against the elevator brake disc 1 within 1-3 seconds. When the elevator runs, the electric telescopic rod 10 retracts the brake lever 2. If the elevator brake fails and the elevator starts to slide, the elevator brake disc 1 starts to rotate, the brake lever 2 is embedded in the hole slot 11 on the elevator brake disc 1 due to the rotation of the elevator brake disc 1, mechanical braking in the form of door bolt is realized, the life of the elevator passengers can be effectively protected, the loss caused by the damage of the equipment due to the collision is avoided, and the elevator brake protection system is suitable for wide promotion.

[0027] Embodiment 3

[0028] An elevator brake protection system, comprising an elevator brake disc 1, an original elevator brake device 12, an electromagnetic device 13, a telescopic rod 14, a controller 15 for controlling the telescopic rod 14, and a detection switch 16, one end of the telescopic rod 14 is connected with the controller 15, the other end is connected with the electromagnetic device 13, the detection switch 16 is located on the side of the controller 15 away from the elevator brake disc 1, and is used for detecting whether the electromagnetic device 13 is reset, the electromagnetic device 13 is a strong electromagnet, and the front end is an arc surface matched with the elevator brake disc 1.

[0029] Working principle:

[0030] The system is installed at the 6 o'clock or 12 o'clock position of the elevator brake disc 1, the original elevator brake device 12 is installed at the 3 o'clock or 9 o'clock position, when the elevator normally runs and stops, the controller 15 drives the telescopic rod 14 to drive the electromagnetic device 13 to move and tightly contact with the arc surface of the elevator brake disc 1, at the same time, the electromagnetic device 13 is powered to generate strong magnetism to attract the elevator brake disc 1, electromagnetic braking is realized, the detection switch 16 is used for detecting whether the electromagnetic device 13 is reset, if the electromagnetic device 13 cannot be reset, the elevator cannot run.

[0031] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An elevator brake protection system comprising an elevator brake disc (1), characterized by: It also includes a brake lever (2), a fixed seat (4) and a driving device for driving the brake lever (2), the brake lever (2) penetrates the fixed seat (4), and the elevator brake disc (1) is provided with at least one hole slot (11) matched with the brake lever (2); The driving device is an electromagnet (5), the brake lever (2) is provided with a metal plate (3) which is attracted to the electromagnet (5), and the brake lever (2) penetrates the electromagnet (5); The brake lever (2) is sleeved with an elastic element, the elastic element is a spring (6), and the spring (6) is located between the electromagnet (5) and the metal plate (3); The fixed seat (4) is fixedly connected with the body of the traction machine, and the fixed seat (4) is located between the elevator brake disc (1) and the metal plate (3); It also includes a travel switch (7), one end of the brake lever (2) away from the elevator brake disc (1) is in contact with the travel switch (7), and the brake lever (2) is made of metal; It also includes a control circuit board, the control circuit board is connected with the electromagnet (5) through a power line (51), and is connected with the travel switch (7) through a signal line, and the control circuit board is also provided with a maintenance operation control system; The driving device is an electric telescopic rod (10); It also includes an electromagnetic device (13), a telescopic rod (14), a controller (15) for controlling the telescopic rod (14) and a detection switch (16), one end of the telescopic rod (14) is connected with the controller (15), the other end is connected with the electromagnetic device (13), and the detection switch (16) is located on the side of the controller (15) away from the elevator brake disc (1).

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