CN109292578B - Sectional type elevator anti-falling system - Google Patents

Abstract

A segmented elevator anti-falling system includes elevators, guide rails and elevator shafts. Several sets of braking unit assemblies are installed on the walls or guide rails of the elevator and elevator shafts, and the braking unit assemblies are sequentially installed in the elevator shafts from top to bottom. On the wall or guide rail, the braking unit includes an accelerometer, an elevator brake and a controller assembly, and the accelerometer, the elevator brake and the controller are respectively fixed on the shaft wall, guide rail or elevator of the elevator shaft. The present invention provides a segmented elevator anti-fall system, which detects the stall condition of the elevator independently and performs independent braking through multiple sets of braking units arranged on the elevator shaft wall or guide rail, and each braking unit is independent of each other. It can greatly improve the reliability of the elevator anti-fall system. The stall induction triggering device fixed on the elevator can also independently trigger each group of elevator brakes to start according to the predetermined value, and perform emergency braking, which further improves the reliability of the elevator anti-fall system.

Description

A segmented elevator anti-fall system

technical field

The invention relates to elevator equipment, in particular to a segmented elevator anti-falling system.

Background technique

Nowadays, there are more high-rise buildings and elevators are widely used. However, due to improper use, untimely maintenance, aging equipment or design defects, elevator falling accidents occur frequently. Although the elevator is equipped with an anti-fall device, due to the untimely response or missed judgment of the speed limiter and safety device, or the partial failure of the braking device, it is very easy to cause heavy loss of life and property. The existing elevator anti-fall is to install the stall induction device and the anti-fall device on the elevator. Generally, an elevator is only equipped with one set of anti-fall device, and the stall induction trigger device is mostly electronic induction type, which is easy to be disturbed by the environment. A major safety hazard, accidents are prone to occur when the anti-fall device does not respond in a timely manner or is chaka.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a segmented elevator anti-fall device to improve the reliability of the elevator anti-fall system.

For realizing the above-mentioned purpose of the invention, the technical scheme of the present invention is as follows:

A segmented elevator anti-falling system, including elevator, guide rail and elevator shaft, is characterized in that several groups of braking units are installed on the elevator, elevator shaft wall or guide rail, and the braking unit components are installed in sequence from top to bottom. On the shaft wall of the elevator shaft, the braking unit includes an accelerometer, an elevator brake and a controller assembly. The accelerometer and the elevator brake are respectively fixed on the shaft wall or guide rail of the elevator shaft. The output end of the accelerometer and the input end of the controller The output end of the controller is connected to the elevator brake; the acceleration measuring instrument in the braking unit transmits the detected elevator acceleration information to the controller, and the controller judges the acceleration value. When the acceleration value is greater than the predetermined value, the controller Start each group of elevator brakes for emergency braking.

As a further improved technical solution of the present invention, the acceleration measuring instrument is a laser accelerometer.

As a further improved technical solution of the present invention, there is an alarm device on the braking unit, the output end of the controller is connected with the input end of the alarm device, and when the controller activates the elevator shaft brake, the alarm device start at the same time.

As a further improved technical solution of the present invention, the bottom of the elevator shaft also has an anti-falling shaft.

As a further improved technical solution of the present invention, the elevator also has a stall induction trigger device.

Compared with the prior art, the beneficial effects of the present invention:

The present invention provides a segmented elevator anti-fall system, which detects the stall condition of the elevator independently and performs independent braking through multiple sets of braking units arranged on the elevator shaft wall or guide rail, and each braking unit is independent of each other. Function, even if one group of braking units fails, other braking units can still brake. Since the probability of all braking units failing at the same time is extremely low, it greatly improves the reliability of the elevator anti-fall system; The fixed stall induction triggering device can also independently trigger each group of elevator brakes to start and perform emergency braking according to a predetermined value, which further improves the reliability of the elevator anti-falling system.

Description of drawings

FIG. 1 is a schematic structural diagram of a stall sensing trigger device in Embodiment 2 of the present invention.

Detailed ways:

Example 1

A segmented elevator anti-falling system includes an elevator, a guide rail and an elevator shaft. Several groups of braking units are installed on the shaft wall of the elevator shaft, and the braking unit components are sequentially installed on the shaft wall or the guide rail from top to bottom. The braking unit includes components such as an accelerometer, an elevator brake and a controller. The accelerometer and the elevator shaft brake are respectively fixed on the shaft wall or guide rail of the elevator shaft. The accelerometer is a laser accelerometer, and the control device is a PLC. The data output end of the accelerometer is connected with the data input end of the controller, and the data output end of the controller is connected with the elevator brake; the accelerometer in the braking unit transmits the detected elevator acceleration information to the controller, and the controller The acceleration value is judged. When the acceleration value is greater than the predetermined value, the controller starts each group of elevator brakes for emergency braking. In addition, there is an alarm device on the braking unit, and the data output end of the controller is connected with the data input end of the alarm device. When the controller activates the elevator brake, the alarm device simultaneously activates to issue a warning. This segmented elevator anti-fall system detects the stall situation of the elevator independently and performs independent braking through multiple sets of braking units arranged on the elevator shaft wall. Each braking unit acts independently, even if there is a set of braking units If the moving unit fails, other braking units can still perform braking. Since the probability of simultaneous failure of all braking units is extremely low, it greatly improves the reliability of the elevator anti-fall system.

Example 2

A segmented elevator anti-fall system, comprising elevators, guide rails and elevator shafts, several groups of braking units are installed on the shaft wall or guide rails of the elevator shafts, and the braking unit components are sequentially installed on the shaft walls or guide rails of the elevator shaft from top to bottom On the elevator, the braking unit includes components such as accelerometer, elevator shaft brake and controller. The accelerometer and elevator brake are respectively fixed on the shaft wall or guide rail of the elevator shaft, and the elevator also has a stall induction trigger device. As shown in Figure 1, the stall sensing trigger device is fixed on the elevator 1, and the weight 4 is placed on the compression spring 2, which can move up and down along the guide rod 3 fixed on the device frame. When the elevator lifts normally, the weight 4 does not contact the inner trigger 5 of the trigger link mechanism. When the elevator stalls and descends, due to the large descending acceleration, the pressure of the weight 4 on the compression spring 2 is reduced, the compression spring 2 is stretched, and the weight 4 is pushed up along the guide rod 3, thereby pushing the inner trigger 5. The connecting rod 6 is driven to push the outer trigger 7 to extend forward, and the brake end of the trigger brake extends toward the elevator shaft or the elevator guide rail, triggering each group of elevator brakes to start, or triggering an alarm device. The predetermined value of stall acceleration is adjusted by changing the distance between the weight 4 on the guide rod and the inner trigger 5 . The stall induction triggering device fixed on the elevator can also independently trigger each group of elevator brakes to start and perform emergency braking according to the predetermined value, which further improves the reliability of the elevator anti-fall system. This device is mechanical, has a safe and reliable structure, is triggered by gravity, does not require external energy, is less likely to be misfired or missed, and is not subject to environmental electromagnetic interference.

The accelerometer is a laser accelerometer, and the control device is a single-chip microcomputer. The data output end of the accelerometer is connected with the data input end of the controller, and the data output end of the controller is connected with the elevator brake; the accelerometer in the braking unit transmits the detected elevator acceleration information to the controller, and the controller The acceleration value is judged. When the acceleration value is greater than the predetermined value, the controller starts each group of elevator brakes for emergency braking. In addition, there is an alarm device on the braking unit, and the data output end of the controller is connected with the data input end of the alarm device. When the controller activates the elevator brake, the alarm device simultaneously activates to issue a warning. This segmented elevator anti-fall system detects the stall situation of the elevator independently and performs independent braking through multiple sets of braking units arranged on the elevator shaft wall. Each braking unit acts independently, even if there is a set of braking units If the moving unit fails, other braking units can still perform braking. Since the probability of simultaneous failure of all braking units is extremely low, it greatly improves the reliability of the elevator anti-fall system. In order to further improve the anti-fall effect, an anti-fall well can also be added at the bottom of the elevator shaft, and the anti-fall method can be carried out together with the original accelerometer and anti-fall device on the elevator. Multiple anti-fall measures can greatly improve the reliability of the anti-fall system. sex.

Claims (1)

1. A segmented elevator anti-falling system, comprising elevator and elevator shaft, is characterized in that, several groups of braking units are installed on the shaft wall of the elevator shaft, and the braking unit assembly is sequentially installed on the shaft wall of the elevator shaft from top to bottom On the upper side, the braking unit includes an accelerometer, an elevator brake and a controller assembly. The accelerometer and the elevator brake are respectively fixed on the shaft wall of the elevator shaft. The output end of the accelerometer is connected to the input end of the controller. The terminal is connected to the elevator brake; the acceleration measuring instrument in the braking unit transmits the detected elevator acceleration information to the controller, and the controller judges the acceleration value. When the acceleration value is greater than the predetermined value, the controller starts each group of elevator brakes for Emergency braking; the acceleration measuring instrument is a laser accelerometer; there is an alarm device on the braking unit, the output end of the controller is connected with the input end of the alarm device, when the controller starts the elevator shaft When the brake is applied, the alarm device is activated simultaneously; the bottom of the elevator shaft is also provided with an anti-falling shaft.

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