Elevator fire control system

Abstract

The utility model discloses an elevator fire control system which comprises a box body, a first rotary switch, a second rotary switch and a third rotary switch are installed on the box body, and a relay is installed in the box body. The control side of the relay is connected into a building fire fighting system, and when a fire disaster occurs, the control side of the relay is powered on, so that the normally-closed contact of the relay is disconnected to disconnect an elevator fire fighting loop, and an elevator enters a fire fighting state. By adopting the three rotary switches, a worker can flexibly set the working mode of the elevator fire-fighting system, so that the elevator fire-fighting system can enter a fire-fighting state smoothly, safely and stably in different application scenes flexibly, the safety of an elevator in a fire disaster is improved, and the safety of the elevator is improved. And the situation that people are trapped or hurt due to the fact that the device cannot normally enter a fire-fighting state and stop between floors is prevented, and safety, stability and flexibility are better.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an elevator fire control system. Background Art

[0002] With the improvement of people's living conditions and the development of buildings, people live in higher and higher floors, and elevators have become one of the most commonly used tools in people's lives. The current elevator fire protection system is linked to the building fire protection system. When a fire occurs, the building fire protection system alarm sends a fire signal, and the elevator fire protection system puts the elevator into a fire protection state. The elevator should stop at the fire protection base station and keep the door open. However, the current elevator fire protection system, whether it is a fire switch installed on the floor or a fire control switch installed in the guard room, requires manual triggering to put the elevator into a fire protection state. When the fire control system of the building fire protection system sends a fire alarm signal, there is no one in the guard room, or the fire control switch fails, it may cause people to be trapped or injured in the elevator, which brings inconvenience to the safe operation of the elevator. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide an elevator fire control system to solve the problem that the fire switch in the prior art can only put the elevator into a fire state by manual triggering and has poor flexibility in use.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: an elevator fire control system, including a control switch and a box body, a first rotary switch, a second rotary switch and a third rotary switch are installed on the box body, and a relay is installed in the box body; the relay is a normally closed relay, and the control side of the relay is connected in series with the control switch; the first rotary switch is a single-pole double-throw switch, having a moving end and two fixed ends, the moving end of which is connected to one end of the elevator fire circuit, one of the fixed ends is connected to one end of the normally closed contact of the relay, and the other end of the normally closed contact of the relay is connected to the other end of the elevator fire circuit after passing through the second rotary switch; the other fixed end of the first rotary switch is directly connected to the other end of the elevator fire circuit after passing through the second rotary switch; the control switch is used to access the building fire system, when a fire occurs and the building fire system is working, the control switch energizes the control side of the relay, disconnects its normally closed contact, and puts the elevator into a fire state.

[0005] As an optimization, a mounting hole is opened on one side wall of the box body, and a supporting shell is sleeved in the mounting hole. The inner side of the supporting shell protrudes toward the inside of the box body so that a mounting groove is formed on its outer side, and the first rotary switch, the second rotary switch and the third rotary switch are installed in the mounting groove.

[0006] As an optimization, a first sliding hole is provided on a side wall of the box body adjacent to the side wall where the mounting hole is provided. Correspondingly, a second sliding hole opposite to the first sliding hole is provided on the side wall of the supporting shell. A protective plate is slidingly inserted in the first sliding hole. The protective plate can slide along the first sliding hole in a direction close to the manufactured shell and pass through the second sliding hole to close the mounting groove of the supporting shell.

[0007] As an optimization, the protection plate is made of a transparent material.

[0008] As an optimization, the first rotary switch and the second rotary switch are knob rotary switches, and the third rotary switch is a key rotary switch.

[0009] Compared with the prior art, the utility model has the following advantages: by adopting three rotary switches, the staff can flexibly set the working mode of the elevator fire protection system, so that it can flexibly enter the fire protection state smoothly, safely and stably in different application scenarios, thereby improving the safety of the elevator in the event of a fire, preventing it from failing to enter the fire protection state normally and stopping between floors, causing entrapment or injury to people, and having better safety, stability and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a circuit diagram of the utility model;

[0012] In the figure: 1 box body, 2 first rotary switch, 3 second rotary switch, 4 third rotary switch, 5 relay, 6 support housing, 7 first sliding hole, 8 control switch. DETAILED DESCRIPTION

[0013] The utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0015] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] Example: See Figure 1-Figure 2, an elevator fire control system, comprising a control switch 8 and a box body 1, a first rotary switch 2, a second rotary switch 3 and a third rotary switch 4 are installed on the box body 1, and a relay 5 is installed in the box body 1; the relay 5 is a normally closed relay 5, and the control side of the relay 5 is connected in series with the control switch 8; the first rotary switch 2 is a single-pole double-throw switch, having a moving end and two fixed ends, the moving end of which is connected to one end of the elevator fire circuit, one of the fixed ends is connected to one end of the normally closed contact of the relay 5, and the other end of the normally closed contact of the relay 5 is connected to the other end of the elevator fire circuit after passing through the second rotary switch 3; the other fixed end of the first rotary switch 2 is directly connected to the other end of the elevator fire circuit after passing through the second rotary switch 3; the control switch 8 is used to access the building fire system, when a fire occurs and the building fire system is working, the control switch 8 energizes the control side of the relay 5, disconnects its normally closed contact, and puts the elevator into a fire state. Specifically, the control switch 8 is a switch-type smoke sensor or a manual fire alarm switch. When a fire occurs, the control switch 8 is turned on by detecting smoke or manually, so that the control side (or control coil) of the relay 5 is energized and the normally closed contact of the relay 5 is opened. There are multiple control switches 8, which are connected in parallel with the control side of the relay 5 in series. Each control switch 8 is distributed in various places of the building so that a fire can be discovered in time.

[0017] like Figure 2 As shown, when in use, when the automatic mode is adopted, it is suitable for the situation that the staff is not nearby. The first rotary switch 2 is rotated to the gear position where the moving end is connected to one of the fixed ends, and the second rotary switch 3 is rotated to the on gear position, and the third rotary switch 4 is rotated to the off gear position, so that the normally closed contact of the relay 5 is connected in series in the elevator fire protection circuit. At this time, when a fire occurs, the building fire protection system works and sends out an alarm signal. The control switch 8 energizes the control side of the relay 5, disconnects the normally closed contact of the relay 5, disconnects the fire protection circuit of the elevator, and enters the fire protection state. After the fire is extinguished, the control switch 8 de-energizes the control side of the relay 5, connects the normally closed contact of the relay 5, contacts the fire protection circuit of the elevator, and leaves the fire protection state. The elevator can operate normally. In the elevator fire protection state, the emergency power supply of the elevator supplies power to the elevator, and the elevator control system controls the elevator to run to the fire protection base station, keeps the door open, and broadcasts soothing or alarm voices, etc.

[0018] When the manual mode is used, which is suitable for the case where the staff is nearby, the first rotary switch 2 is turned to the gear position where the moving end is connected to the other fixed end, and the second rotary switch 3 is turned to the on gear position, and the third rotary switch 4 is turned to the off gear position. At this time, the elevator fire protection circuit is in the on state. When a fire occurs, the staff can manually turn the second rotary switch 3 to the off gear position to cut off the elevator fire protection circuit and put the elevator into the fire protection state.

[0019] When the elevator fire protection circuit abnormally enters the fire protection state and cannot be used due to equipment failure or other reasons, the third rotary switch 4 can be turned to the on position to short-circuit the elevator fire protection circuit, so that the elevator exits the fire protection state and maintains the normal operation of the elevator. Since this operation is mainly for abnormal situations, the first rotary switch 2 and the second rotary switch 3 are rotary switches with knobs, and the third rotary switch 4 is a key rotary switch, so that the third rotary switch 4 needs to be operated by a staff with relevant authority using a key.

[0020] Specifically, a mounting hole is opened on one side wall of the box body 1, and a support shell 6 is sleeved in the mounting hole. The inner side of the support shell 6 protrudes toward the inside of the box body 1 so that a mounting groove is formed on its outer side. The first rotary switch 2, the second rotary switch 3 and the third rotary switch 4 are installed in the mounting groove, so as to better protect each rotary switch and prevent misoperation and damage.

[0021] Furthermore, a first sliding hole 7 is provided on a side wall of the box body 1 adjacent to the side wall where the mounting hole is provided, and correspondingly, a second sliding hole opposite to the first sliding hole 7 is provided on the side wall of the supporting shell 6, and a protective plate is inserted and slidably fitted in the first sliding hole 7, and the protective plate can slide along the first sliding hole 7 toward the direction of the formed shell and pass through the second sliding hole to close the mounting groove of the supporting shell 6. The protective plate is made of a transparent material. After the fire is over, the protective plate is inserted to cover the mounting groove to prevent others from operating it by mistake, and it is also convenient for the staff to observe the current working mode.

[0022] Compared with the prior art, the utility model has the following advantages: by adopting three rotary switches, the staff can flexibly set the working mode of the elevator fire protection system, so that it can flexibly enter the fire protection state smoothly, safely and stably in different application scenarios, thereby improving the safety of the elevator in the event of a fire, preventing it from failing to enter the fire protection state normally and stopping between floors, causing entrapment or injury to people, and having better safety, stability and flexibility.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. An elevator fire control system, characterized in that: It comprises a control switch and a box body, wherein a first rotary switch, a second rotary switch and a third rotary switch are mounted on the box body, and a relay is mounted in the box body; the relay is a normally closed relay, and the control side of the relay is connected in series with the control switch; the first rotary switch is a single-pole double-throw switch, having a moving end and two fixed ends, wherein the moving end is connected with one end of an elevator fire protection circuit, wherein one fixed end is connected with one end of a normally closed contact of the relay, and the other end of the normally closed contact of the relay is connected with the other end of the elevator fire protection circuit via the second rotary switch; the other fixed end of the first rotary switch is directly connected with the other end of the elevator fire protection circuit via the second rotary switch; the control switch is used to access a building fire protection system, and when a fire occurs and the building fire protection system is operated, the control switch energizes the control side of the relay, disconnects its normally closed contact, and puts the elevator into a fire protection state.

2. An elevator fire control system according to claim 1, characterized in that: A mounting hole is opened on one side wall of the box body, a support shell is sleeved in the mounting hole, the inner side of the support shell protrudes toward the inside of the box body so that a mounting groove is formed on its outer side, and the first rotary switch, the second rotary switch and the third rotary switch are installed in the mounting groove.

3. An elevator fire control system according to claim 2, characterized in that: A first sliding hole is provided on a side wall of the box body adjacent to the side wall where the mounting hole is provided. Correspondingly, a second sliding hole opposite to the first sliding hole is provided on the side wall of the supporting shell. A protective plate is inserted and slidably fitted in the first sliding hole. The protective plate can slide along the first sliding hole toward the direction approaching the manufactured shell and pass through the second sliding hole to close the mounting groove of the supporting shell.

4. An elevator fire control system according to claim 3, characterized in that: The protection plate is made of transparent material.

5. An elevator fire control system according to claim 1, characterized in that: The first rotary switch and the second rotary switch are knob rotary switches, and the third rotary switch is a key rotary switch.

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