CN1309646C - Protection device for elevator release brake to prevent inertial slippage - Google Patents

Abstract

A kind of lift relieves the brake and gets rid of the stranded protection device preventing the inertial slippage, it is the safe protection device preventing the inertial slippage to the lift escape device, there are driving motors in its lift mechanical control room, and set up the brake on the driving motor, the brake connects the motor mandrel with the change gear, there are manual brake release levers on the brake; the escape and protection device is an electromagnetic actuating part which is arranged above a manual brake releasing rod of the mechanical control chamber, and the actuating rod of the electromagnetic actuating part is supported by a spring and is connected with an extension rod to be supported on the manual brake releasing rod.

Description

Protection device for elevator release brake to prevent inertial slippage

This application is a division of 01129237.7.

technical field

The invention relates to a multiple protection device for an elevator to release brakes and escape from traps to prevent inertial slippage.

Background technique

The driving motor of the existing high-rise elevator is a direct spindle drive drive wheel, and then the drive wheel drives the elevator hoisting cable to reach the purpose of its elevator lifting. And the use of the elevator inevitably has the situation of failure, so there is a design for the escape. Yet because when escaping, all is to utilize manual or reserves such as storage battery electric power to actuate, and reaches its control manual release brake lever and brake releases the brake to facilitate the movement of elevator car.

However, during the assembly process of the elevator car, counterweights are connected with steel cables according to its weight, hoping to make it close to balance and facilitate the operation of the elevator. However, the balance point is not easy to control. In addition to the weight of people entering, generally one side will be heavier. Also because of the counterweight, after the elevator car releases the brake, it will slide in the direction of the heavier weight. During the sliding process It is easy to cause the elevator to rise or fall too fast due to the relationship between inertial slippage and gravitational acceleration, which will cause danger and even cause casualties to people in the car, which is a major safety defect.

Contents of the invention

The inventor of the present invention has been engaged in the research and development and manufacturing of elevators and related products for many years. He is well aware of the manufacturing methods of high-floor elevators and their advantages and disadvantages. After researching and making trials many times, the elevator of the present invention is finally invented to release the multi-protection device for braking and getting out of trouble to prevent inertial slippage.

The main purpose of the present invention is to solve the above-mentioned lack of safety, and to provide a multiple protection device for elevator brake release to prevent inertial slippage, wherein the elevator car can still be controlled during the sliding process after the brake is released. The brake produces a deceleration action of braking and releasing cycles, ensuring that the slipping speed is within the safe speed limit and avoiding a stall that endangers the safety of personnel in the elevator car.

The above object of the present invention is achieved by the following technical solutions.

A multi-protection device for preventing inertial slippage by releasing brakes for an elevator, which is a safety protection device for preventing inertial slippage aimed at elevator escape devices. A driving motor is installed in the elevator mechanical control room, and a brake is installed on the driving motor. The brake is connected to the motor mandrel with a speed change gear, and there is a manual release lever on the brake: it is characterized in that:

An escape and protection device, which is an emergency cable extending to the side of the elevator car, the top of the emergency cable is coiled around the transmission drive disc, and there is a restraint pulley near the drive disc to limit the spacing of the emergency cable, and the restraint pulley is combined with the connecting rod mechanism, and the other end of the link mechanism controls the clutch, drives the disc spindle to connect to the clutch, small motor, and cam, and the cam is against the manual release lever;

According to this, when escaping and pulling the emergency cable, the restraining pulley and the connecting rod mechanism act to force the clutch to be coupled, and the driving disc is pulled at the same time to make the drive shaft drive the cam to rotate. The lifting and releasing cycle action is generated on the manual release of the brake lever, and the brake produces the deceleration action of braking and releasing cycle, forcing the elevator car to decelerate moderately when lifting and lowering according to the counterweight to maintain a safe speed limit action, preventing the car from falling at high speed Dangers caused, to ensure the safety of people in the car:

In addition, the button control in the elevator car during escape can make the small motor drive the mandrel to rotate, and the mandrel drives the cam to rotate, and the brake can also produce the deceleration action effect of braking and releasing cycle.

In the specific implementation process, the source of the operating power of the small motor is mainly the electric power of the storage battery.

Above-mentioned purpose of the present invention can also be realized by following another technical scheme:

A protection device for preventing inertial slippage by releasing the brakes of an elevator, which is a safety protection device for preventing inertial slippage aimed at the elevator escape device. The elevator mechanical control room is equipped with a driving motor, and the driving motor is equipped with a brake. The gear is connected to the motor mandrel with a speed change gear, and a manual brake release lever is provided on the brake; it is characterized in that:

An escape and protection device, which is an electromagnetic actuator installed above the manual brake release lever in the mechanical control room. The actuation lever of the electromagnetic actuator is spring-loaded and connected to the extension rod against the manual brake release lever. :

According to this, the button control in the elevator car at the time of escape can cause the electromagnetic actuator to generate excitation and stop repeatedly, so that the actuator rod can produce a push-up and release cycle action on the manual brake release lever, so that The brake produces a deceleration action of braking and release cycles, forcing the elevator car to perform moderate deceleration to maintain a safe speed limit when rising and falling according to the counterweight, so as to prevent the danger caused by the high-speed fall of the car and ensure the safety of the people in the car.

In addition to the above-mentioned necessary technical features, this other technical solution can also add the following technical content during the specific implementation process: the source of the actuating power of the electromagnetic actuator is mainly the standby power of the building or the power of the storage battery.

The advantages of the present invention are:

The release of the brake is controlled by manual or standby electric action, so that the elevator car can be raised or lowered according to the counterweight, so as to achieve the purpose of self-rescue. During the process of raising or lowering the elevator car, its brake is timely Make a deceleration action to keep the elevator car within the safe speed limit, and ensure the safety of the people in the elevator car.

Description of drawings

Regarding the technology, means and effects thereof adopted in the present invention, a preferred embodiment is given and described in detail in conjunction with the accompanying drawings. It is believed that the above-mentioned purpose, structure and characteristics of the present invention should be able to gain a deep and specific understanding from this .

Fig. 1 is a schematic plan view of a preferred embodiment of the present invention.

Fig. 2 is a schematic diagram of the action of the electromagnetic actuator of the present invention.

Fig. 3 is a schematic diagram of the action of the driving disk of the present invention.

Fig. 4 is a schematic side plan view of the linkage mechanism of the present invention.

Fig. 5 is a schematic diagram of the side plane action of the linkage mechanism of the present invention.

Fig. 6 is a schematic diagram of the direction of the cam in Fig. 1 of the present invention.

Detailed ways

The present invention provides a multi-protection device for preventing inertial slippage by releasing the brakes and evacuating the elevator, which has the functions of escaping from troubles and more security.

In order to make it possible to further understand the structural design and the technology of the present invention, it will be described in the following in conjunction with the accompanying drawings:

Referring to shown in Figure 1, it is a schematic plan view of the present invention. A protection device for preventing inertial slippage by releasing brakes for an elevator. The elevator mainly includes an elevator car 10 , elevator hoists 11 , and an elevator hoisting machine control room 20 . In the control room 20 of the elevator hoisting machine, the driving motor 21 and the mandrel 22 are connected to the driving wheel 23 to drive the elevator hoisting rope 11 . The spindle 22 is also equipped with a transmission gear set 30 connected with a brake 40 . And in the brake 40, except that there is an automatic control brake release device, a manual release brake lever 41 is provided on the brake 40 top. And in the elevator hoisting machine control room 20, an escape and protection device is installed. The escape and protection device is electrically connected to a control button inside the elevator car, or the escape and protection device is connected to an escape emergency cable to one side of the elevator car.

Its escape and protection device is an electromagnetic actuator 50 . The electromagnetic actuator 50 is fixed on the top of the manual release lever 41 of the elevator lifting machine control room 20 , and the actuator lever 51 of the electromagnetic actuator 50 is normally pushed out by the spring 52 to disengage most of the electromagnetic actuator 50 . When the electromagnetic actuator 50 is energized and excited, the actuating rod 51 is pulled down (see Figure 2), forcing its extension rod 53 to press the brake 40 and release the brake rod 41 manually to perform the brake release action, and the elevator car can be configured accordingly. Reproduce the lift action. The electromagnetic actuator 50 is designed to be in a continuous power-on and power-off state after the button 12 is pressed. When the electromagnetic actuator 50 has no current excitation effect for a short time, the spring 52 pushes the actuating rod 51 back to its original position, and the brake 40 brakes immediately to produce a deceleration action of brake, release, brake, and release cycle, so as to avoid the failure of releasing the brake in the escape state. The elevator car 10 is out of control due to the acceleration of gravity, ensuring the safety of the people in the elevator car.

The electric power used by the electromagnetic actuator 50 is mainly the standby power of the building. And the elevator car 10 is also equipped with a first button 12 .

In addition, its escape and protection device can also be an emergency cable 60 . The emergency cable 60 extends beside the elevator car 10 . The top end of the emergency cable 60 is wound around the drive disc 61 (as shown in FIG. 3 ).

And set up restraining pulley 62 near driving disk 61 side, restrain emergency cable 60 spacings. The pulley 62 is constrained and combined with the link mechanism 63 (cooperating with reference to FIG. 4). The middle section of the link mechanism 63 is pivotally arranged in the control room 20 of the elevator hoisting machine, and the other end is a slot 71 for inserting the clutch 70 . When pulling the emergency cable 60 to drive the drive disc 61 to rotate, the constraint pulley 62 will also be shifted, and the link mechanism 63 will be swung to couple the clutch 70 (cooperating with reference to FIG. 5 ). The power pulled by the emergency cable 60 must be transmitted to the cam member 64 via the mandrel 65, and the cam member 64 is used to press and release the manual release brake lever 41, causing the brake 40 to brake, release, brake, and release the continuous deceleration action, so that the elevator car The box 10 moves according to the counterweight and has a moving deceleration effect to ensure that it will not cause the danger of stalling due to inertial slipping and gravitational acceleration.

A small motor 66 is arranged on the coaxial of the spindle 65 . And the use electric power of its small motor 66 is based on the electric power of storage battery 67. A second button 68 is provided to control the action of the small motor 66 in the elevator car 10 . The small motor 66 rotates to drive the spindle 65 and the cam member 64 . The continuous high point 641 and low point 642 undulations on the peripheral surface of the cam member 64 (cooperating with reference to FIG. 6 ), cause the continuous action of pressing and releasing the manual brake lever 41 during rotation, resulting in continuous braking and releasing of the brake 40. slowing down effect.

The system of the above-mentioned electromagnetic actuator 50 and the system of the cam member 64 can also exist at the same time, or a separate system setting: the cam member 64 is set up separately, then it is only necessary to directly press the manual brake release lever 41 or add an extension rod to resist That's it. And exist at the same time, then the cam part 64 withstands the actuating rod 51 of the electromagnetic actuator 50, and the actuating rod 51 pushes against the manual release brake lever 41 with the extension rod 53 again.

To sum up, the present invention controls the release of the brake by manual or standby electric action, so that the elevator car can be raised or lowered according to the counterweight, so as to achieve the purpose of self-rescue. In the process of raising or lowering the elevator car, the escape and protection device is used to make the brake decelerate in time to keep the elevator car within a safe speed limit and ensure the safety of the people inside the elevator car.

The above-mentioned embodiments are only used to illustrate the present invention. Without departing from the spirit of the present invention, various modifications, modifications and applications made by those skilled in the art should be included in the scope of the present invention.

Claims (2)

1, a kind of fender guard of preventing inertial slide for lift with released brake, be at the elevator escape device safe fender guard that prevents the inertia slippage of doing, be provided with CD-ROM drive motor in its elevator machine control cabin, and establish brake on the CD-ROM drive motor, brake connects motor spindle with variable gear, on the brake and be provided with manual un-brake bar; It is characterized in that:

One escape and fender guard are electromagnetic actuating component, and this electromagnetic actuating component is installed in the manual un-brake bar top of machinery control room, and the operating bar of electromagnetic actuating component is the spring contact, and the connection extension rod supports under the pressure of on the manual un-brake bar.

2, the fender guard of preventing inertial slide for lift with released brake according to claim 1 is characterized in that: the power supply of this electromagnetic actuating component is the standby power in building or the electric power of storage battery.

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