CN217535074U

CN217535074U - Device for realizing elevator control based on safety helmet

Info

Publication number: CN217535074U
Application number: CN202220091170.5U
Authority: CN
Inventors: 周鑫; 张靖; 丛峰; 何飞群
Original assignee: Manluntisheng Elevator Co ltd
Current assignee: Manluntisheng Elevator Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-10-04
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a device for realizing elevator control based on safety helmets, which comprises at least one light source, a weighing switch, a time relay, an elevator control circuit and at least one trigger circuit, wherein each safety helmet is provided with a light source; each trigger circuit corresponds to a light source and comprises a trigger relay and a photosensitive resistor, and a normally open contact of the trigger relay is connected with the photosensitive resistor in parallel. When a plurality of trigger circuits are arranged, the normally closed contacts of the plurality of trigger relays are connected in parallel and then connected in series with the weighing switch, and the normally closed contacts of the plurality of trigger relays are connected in series and then connected in series with the elevator control circuit. The utility model discloses the control of elevator is realized to accessible safety helmet, makes it bring to rest when needing to improve the security.

Description

Device for realizing elevator control based on safety helmet

Technical Field

The utility model relates to an elevator technical field especially relates to a device based on safety helmet realizes elevator control.

Background

Elevators have become widely distributed with people's daily lives as an important means of transporting people or goods in high-rise buildings. In the case of elevators, the safety of elevators is a great everyday concern. With the improvement of relevant laws and regulations in China and the increasing importance of elevator manufacturers, elevator accidents caused by equipment defects, safety component failures, protection device failures and the like are gradually reduced every year. However, the number of elevator accidents caused by installation personnel working against regulations or mishandling is still high. The reasons for this are mainly due to the lack of sufficient safety awareness of elevator installers, lack of sufficient communication between elevator installers, and excessive confidence in long-term accumulated experience. In order to avoid the above problems, it is necessary to increase the supervision of the construction process and also to improve the safety of construction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device based on safety helmet realizes elevator control can realize the control of elevator based on safety helmet, makes the elevator bring to rest when needing to improve construction safety nature.

In order to achieve the above object, the utility model provides a device based on safety helmet realizes elevator control, the device includes:

at least one light source, one said light source being disposed on each safety helmet;

the weighing switch is arranged on the pit ladder;

a time relay connected in series with the weighing switch;

the elevator control circuit comprises a car top emergency stop switch connected in series with the delay disconnection contact of the time relay;

at least one trigger circuit, each trigger circuit corresponding to a light source, the trigger circuit including a trigger relay and a first photoresistor, the normally open contact of the trigger relay being connected in parallel with the first photoresistor, wherein,

when the device comprises a trigger circuit, the normally closed contact of the trigger relay is directly connected in series with the weighing switch and the car roof emergency stop switch;

when the device comprises a plurality of trigger circuits, normally closed contacts of a plurality of trigger relays are connected in parallel and then connected in series with the weighing switch, and normally closed contacts of a plurality of trigger relays are connected in series and then connected in series with the car top emergency stop switch.

Preferably, still include at least one reset circuit, every reset circuit corresponds a trigger circuit, reset circuit includes series connection's second photo resistance and reset relay, reset relay's normally closed contact and the normally open contact series connection that corresponds trigger relay, wherein, when the device includes a trigger circuit, reset relay's normally closed contact is direct and the weighing switch series connection, and when the device included a plurality of trigger circuits, a plurality of reset relay's normally closed contact series connection back and weighing switch series connection.

Preferably, still include alarm circuit, alarm circuit includes the alarm, time relay's time delay closed contact with the alarm series connection.

Preferably, the alarm comprises an audible alarm and/or a light alarm.

Preferably, the light intensity of the light source is variable.

Preferably, when the device comprises a plurality of light sources, the light intensity of each light source is different.

The utility model has the advantages that:

the utility model discloses a safety helmet realizes some controls of elevator, makes the elevator stop motion when needing to improve the security.

Drawings

Fig. 1 is a schematic diagram of an apparatus for implementing elevator control based on a safety helmet according to an embodiment of the present invention;

fig. 2 is a flow chart of elevator control realized based on a safety helmet in an embodiment of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the present invention.

As shown in fig. 1, for the utility model discloses a device based on safety helmet realizes elevator control, including at least one light source (not shown), weighing switch K, time relay KT, elevator control circuit 10 and at least one trigger circuit 20.

The light source is used for generating light, the light source is arranged on each safety helmet, and the light intensity of the light source can be set according to actual requirements, such as different light intensities of the light sources.

On the pit cat ladder was located to the switch K that weighs, when receiving certain weight on the pit cat ladder, the switch K that weighs was closed, otherwise, the switch K that weighs is not closed.

The time relay KT is connected with the weighing switch K in series and is provided with a time delay closing contact KT 'and a time delay opening contact KT', namely, after the time relay KT is electrified, the time delay opening contact KT 'is opened after delaying for a certain time, and the time delay closing contact KT' is closed after delaying for a certain time.

The elevator control circuit 10 is used for controlling the elevator to stop or run and comprises a car top emergency stop switch M which is connected in series with a time-delay disconnection contact KT' of a time relay KT.

The trigger circuits 20 are used for triggering whether the time relay KT works, each trigger circuit 20 corresponds to one light source, that is, each trigger circuit 20 triggers whether the time relay KT works according to whether the light source emits light, if the light source emits light, the trigger circuit 20 triggers the time relay KT to work, and the like. Each trigger circuit 20 comprises a trigger relay KM and a first photoresistor a, the trigger relay KM having a normally open contact KM 'and a normally closed contact KM ", the normally open contact KM' being connected in parallel with the first photoresistor a. When the device only comprises one trigger circuit 20, the normally closed contacts KM 'of the trigger relays KM are directly connected with the weighing switch K in series, and when the device comprises a plurality of trigger circuits 20, the normally closed contacts KM' of the trigger relays KM are connected in parallel and then connected with the weighing switch K in series. Here, the normally closed contact KM "of the trigger relay KM determines whether to open or not depending on whether or not the first photo resistor a receives light. In implementation, when the first photoresistor a does not receive light emitted by the light source, the normally closed contact KM 'of the trigger relay KM is in a closed state, and when the first photoresistor a receives the light emitted by the light source, the normally closed contact KM' of the trigger relay KM is in an open state.

Further, when an engineer enters a pit, in order to ensure that the elevator control circuit 10 can accurately control the elevator to only run slowly, the normally closed contact KM' of the trigger relay KM is also connected in series with the car top emergency stop switch M. When the apparatus includes a triggering circuit 20, the normally closed contact KM "of the triggering relay KM is connected directly in series with the ceiling emergency stop switch M. When the device comprises a plurality of trigger circuits 20, normally closed contacts KM ' of a plurality of trigger relays KM are connected in series and then connected in series with a car top emergency stop switch M, as shown in fig. 1, a normally closed contact KM '2, and a normally closed contact KM ' n are connected in series and connected in series with the car top emergency stop switch M.

Further, as shown in fig. 1, the device further includes reset circuits 30, each reset circuit corresponds to one trigger circuit, and the reset circuits 30 are used for enabling the normally closed contacts of the trigger relays in the corresponding trigger circuits to be restored to the initial state after the engineering personnel leave the pit, so that the elevator can be restored to operate. The reset circuit 30 includes a reset relay KN and a second photo resistor B connected in series, and the second photo resistor B is used to control whether the reset relay KN operates according to whether light emitted from the light source is received, and is preferably located outside the pit. The reset relay KN is provided with a normally closed contact KN ', and the normally closed contact KN ' is connected with a normally open contact KM ' of the trigger relay KM in series in the corresponding trigger circuit. When the device includes a trigger circuit, this reset relay KN's normally closed contact still directly connects in series with weighing switch K. When the device includes a plurality of trigger circuit, the normally closed contact KN 'parallel connection back and the weighing switch K series connection of a plurality of reset relay KN, like after normally closed contact KN'1, normally closed contact KN '2, normally closed contact KN' n parallel connection with weighing switch K series connection. In operation, when the second photo-resistor B is not receiving light from the light source, the normally closed contact KN' of the reset relay KN is in a closed state. When the second photo-resistor B receives light generated by the light source, the normally closed contact KN' of the reset relay KN is in an off state.

Further, as shown in fig. 1, the device further comprises an alarm circuit 40, and the alarm circuit 40 is used for generating an alarm to prompt an engineer to wear the safety helmet. The alarm circuit 40 comprises an alarm which is connected in series with a time-delay closed contact KT' of a time relay KT. In this embodiment, the alarm includes audible alarm and/or light alarm, can set up according to actual demand, if only set up audible alarm etc..

As shown in fig. 2, the working principle of the device based on the safety helmet for realizing elevator control is as follows:

the staff gets into the pit through the pit cat ladder. And triggering the weighing switch K when the pit ladder stands receive the weight, so that the weighing switch K is closed. After the weighing switch K is closed, the time relay KT works. If the engineer does not wear the helmet, the normally closed contact KM ″ of the trigger relay KM in the trigger circuit 20 cannot be turned off, and the alarm circuit 40 generates an alarm to prompt the engineer to wear the helmet. Meanwhile, the delay disconnection contact KT' is disconnected, so that the elevator cannot run slowly or quickly.

If the engineering personnel wear the safety helmet, the light generated by the light source on the safety helmet is received by the first photoresistor A, so that the normally closed contact KM '' of the corresponding trigger relay KM is disconnected, and after the normally closed contact KM '' is disconnected, the time relay KT cannot work normally, so that the alarm prompt cannot be generated. Meanwhile, the normally closed contact KM ' corresponding to the elevator control circuit 10 is disconnected, but is different from the delay disconnection contact KT ' of the time relay KT, and the normally closed contact KM ' of the trigger relay KM is in the same level with the car top emergency stop switch M and can be bridged by the slow car switch N on the car top maintenance box, namely, is connected in parallel, so that the risk of accidental fast car movement of the elevator caused by forgetting to open the car top emergency stop switch M by engineering personnel can be avoided while the slow car maintenance work is not influenced.

After the work of pit, the engineer gets back to the back outside the pit, the light that the light source on its safety helmet produced triggers second photo resistance B, and then make reset relay KN work, reset relay KN further breaks off normally closed contact KN ', make the unable work of trigger circuit who corresponds, then make trigger relay's normally closed contact be in the on-state, make time relay unable work simultaneously, then make time relay's time delay disconnection contact be in the normally closed state, also the normally closed contact that each trigger relay corresponds is in the on-state, the time delay disconnection contact that time relay corresponds is in the on-state. When a plurality of engineers leave all the elevator control circuit, the elevator control circuit can be restored to the initial state.

The utility model discloses a safety helmet realizes some controls of elevator, if engineering personnel wear safety helmet get into behind the pit safety helmet steerable elevator only can slow car operation, but engineering personnel do not wear safety helmet get into behind the pit steerable elevator all can not move under slow car and the fast car condition etc. make the elevator stop operation when needing to improve the security.

The technical contents and features of the present invention have been disclosed as above, however, those skilled in the art can still make various substitutions and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention, therefore, the protection scope of the present invention should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications without departing from the present invention, and should be covered by the claims of the present patent application.

Claims

1. An apparatus for implementing elevator control based on a safety helmet, the apparatus comprising:

at least one light source, each safety helmet is provided with one light source;

the weighing switch is arranged on the pit ladder;

a time relay connected in series with the weighing switch;

2. The device of claim 1, further comprising at least one reset circuit, wherein each reset circuit corresponds to one trigger circuit, the reset circuit comprises a second photoresistor and a reset relay which are connected in series, a normally closed contact of the reset relay is connected in series with a normally open contact of the corresponding trigger relay, wherein when the device comprises one trigger circuit, the normally closed contact of the reset relay is directly connected in series with the weighing switch, and when the device comprises a plurality of trigger circuits, the normally closed contacts of the plurality of reset relays are connected in parallel and then connected in series with the weighing switch.

3. The device of claim 1, further comprising an alarm circuit comprising an alarm, wherein the time-delay closed contacts of the time relay are connected in series with the alarm.

4. A device according to claim 3, wherein the alarm comprises an audible alarm and/or a light alarm.

5. The apparatus of claim 1, wherein the light source has a variable light intensity.

6. The device of claim 1, wherein the device comprises a plurality of light sources, each light source having a different intensity.