Detection device for elevator pit water inflow detection

Abstract

The utility model discloses a detection device for detecting water entering a pit of an elevator, which comprises a control device and a water immersion sensor switch, and the control device is electrically connected with the water immersion sensor switch; the control device is matched with the immersion sensor switch, whether water enters the elevator pit or not can be detected in real time through the immersion sensor switch, the control device controls running and stopping of the elevator according to the detection result of the immersion sensor switch, and the detection device is simple in structure and convenient to use. During mounting, only mounting holes need to be formed in the bottom of the elevator car, so that the mounting convenience of the detection device is improved; through the arrangement of the lead switch, the limiting stoppers and the buoy, when the buoy abuts against the limiting stopper at the upper end, the lead switch is triggered, the lead switch transmits abnormal water inflow of the electric bottom pit to the control device at the moment, the control device is used for controlling the elevator to stop, and safety accidents caused by the fact that accumulated water in the elevator bottom pit affects safe operation of the elevator are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator safety detection, in particular to a detection device for detecting water ingress into an elevator pit. Background Art

[0002] The elevator shaft is the hoistway where the elevator is installed. The size of the shaft is determined according to the elevator selection. The bottom of the elevator shaft pit is smooth and flat. Under external factors (such as heavy rain, rupture of drainage pipes, etc.), the elevator shaft pit is prone to accumulate water, thus affecting the normal use of the elevator. In order to improve the safety of elevator use, it is particularly important to detect water ingress in the elevator pit.

[0003] After searching, Chinese patent documents disclose a device for detecting water ingress into an elevator pit, comprising a first bottom supporting column and a second bottom supporting column, wherein the second bottom supporting column has a load-bearing support frame fixedly installed at both ends of one side, and the first bottom supporting column and the second bottom supporting column have a first bottom load-bearing column and a second bottom load-bearing column fixedly installed at both ends through a mortise and tenon structure; a preliminary warning structure is fixedly installed on the top of the second bottom load-bearing column, and an auxiliary load-bearing frame is fixedly installed on the top of the second bottom load-bearing column through a mortise and tenon structure; an emergency warning structure is fixedly arranged on the top of the auxiliary load-bearing frame; when the water ingress into the elevator pit is serious, the floating ball B rises due to the buoyancy of the water, thereby driving the rotating pressure frame B to rotate, and after rotating to a certain angle, the rotating pressure frame B presses two sets of control switches B, and the control switch B controls the elevator to start and stop running at the nearest floor to prevent water accumulation from causing elevator malfunctions and injuring passengers, and at the same time, the alarm continues to sound an alarm when the elevator is out of service to prevent people from entering the elevator again and causing danger.

[0004] However, the above-mentioned device for detecting water ingress into the elevator pit has a complex structure and is not convenient for quick installation with the elevator car. Therefore, we need to propose a detection device for detecting water ingress into the elevator pit to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a detection device for detecting water ingress into an elevator pit. Through the cooperation of a control device and a water immersion sensor switch, whether water has entered the elevator pit can be detected in real time through the water immersion sensor switch, and the control device controls the operation and stop of the elevator according to the detection result of the water immersion sensor switch. The detection device has a simple structure and is easy to install, so as to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solutions: a detection device for detecting water ingress into an elevator pit, comprising a control device and a water immersion sensor switch, wherein the control device is electrically connected to the water immersion sensor switch;

[0007] The water sensor switch comprises a connecting rod connected to the bottom of the elevator shaft, a lead switch and a limiter, wherein the lead switch is installed inside the connecting rod, a buoy that can move up and down is sleeved on the outer wall of the connecting rod, a magnet is installed inside the buoy, and limiters are arranged at both ends of the connecting rod located at the buoy;

[0008] When the float touches the lower end limiter, the lead switch is not triggered, and when the float touches the upper end limiter, the lead switch is triggered.

[0009] Preferably, the control device comprises a CPU board containing a HALL effect and a PCB board containing a HALL effect, and the CPU board and the PCB board are electrically connected.

[0010] Preferably, the CPU board and the PCB board both include Hall sensors, and one pin and two pins of the Hall sensor in the CPU board are respectively connected to one pin and two pins of the Hall sensor in the PCB board.

[0011] Preferably, three pins of the Hall sensor in the PCB board are connected to a diode D1 and a resistor R1, one end of the resistor R1 is connected to one end of a lead switch, and four pins of the Hall sensor in the PCB board are connected to the other end of the lead switch.

[0012] Preferably, the lead switch comprises a glass tube, in which an inert gas and a magnet are encapsulated.

[0013] Preferably, an outer wall of the upper end of the connecting rod is provided with an external thread section, and a nut is threadedly connected to the external thread section.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model can detect in real time whether water has entered the elevator pit through the cooperation of the control device and the water immersion sensor switch, and the control device controls the operation and stop of the elevator according to the detection result of the water immersion sensor switch. The detection device has a simple structure and only needs to open a mounting hole at the bottom of the elevator car during installation, which improves the convenience of installation of the detection device.

[0016] 2. The utility model is equipped with a lead switch, a limiter and a buoy. When the buoy conflicts with the lower limiter, the lead switch is not triggered, and there is no water ingress into the elevator pit. When the buoy conflicts with the upper limiter, the lead switch is triggered. At this time, the lead switch transmits the abnormal water ingress into the elevator pit to the control device, and the control device is used to control the elevator to stop, thereby avoiding safety accidents caused by water accumulation in the elevator pit affecting the safe operation of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of the structure of the water immersion sensor switch of the utility model;

[0018] Figure 2 It is the circuit principle diagram of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the utility model when installed.

[0020] In the figure: 1. connecting rod; 2. lead switch; 3. magnet; 4. buoy; 5. limiter; 6. water immersion sensor switch; 7. angle steel; 8. car guide rail; 9. guide rail clamp; 10. beam; 11. bracket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 The utility model provides a technical solution: a detection device for detecting water ingress in an elevator pit, comprising a control device and a water immersion sensor switch 6, wherein the control device is electrically connected to the water immersion sensor switch 6, and the water immersion sensor switch 6 is used to detect whether water has entered the elevator pit in real time, and the control device controls the operation and stop of the elevator according to the detection result of the water immersion sensor switch 6. The detection device has a simple structure, and only needs to open a mounting hole at the bottom of the elevator car during installation, thereby improving the convenience of installing the detection device;

[0023] The water sensor switch 6 comprises a connecting rod 1 connected to the bottom of the elevator shaft, a lead switch 2 and a limiter 5, wherein the lead switch 2 is installed inside the connecting rod 1, a buoy 4 which can move up and down is sleeved on the outer wall of the connecting rod 1, a magnet 3 is installed inside the buoy 4, and limiters 5 are arranged at both ends of the connecting rod 1 located at the buoy 4;

[0024] When the buoy 4 touches the lower limiter 5, the lead switch 2 is not triggered, and there is no water inflow into the elevator pit. When the buoy 4 touches the upper limiter 5, the lead switch 2 is triggered. At this time, the lead switch 2 transmits the abnormal water inflow into the elevator pit to the control device, and the control device is used to control the elevator to stop, avoiding safety accidents caused by water accumulation in the elevator pit affecting the safe operation of the elevator.

[0025] like Figure 2As shown, the control device includes a CPU board containing a HALL effect and a PCB board containing a HALL effect, the CPU board and the PCB board are electrically connected, and both the CPU board and the PCB board include Hall sensors, and one pin and two pins of the Hall sensor in the CPU board are respectively connected to one pin and two pins of the Hall sensor in the PCB board; the CPU board and the PCB board communicate through the HALL effect, thereby improving the rate of processing the trigger signal of the lead switch 2, so as to improve the precise control of the water immersion sensor switch 6.

[0026] The three pins of the Hall sensor in the PCB board are connected to a diode D1 and a resistor R1, one end of the resistor R1 is connected to one end of the lead switch 2, and the four pins of the Hall sensor in the PCB board are connected to the other end of the lead switch 2, which facilitates improving the connection between the PCB board and the lead switch.

[0027] The lead switch 2 includes a glass tube, in which an inert gas and a magnet are encapsulated. The lead switch 2 is a combination of a lead switch as a magnetically driven switch by encapsulating the glass tube with a magnet, a contact and an inert gas to detect the liquid level. As shown in FIG. 1 , a magnet 3 is enclosed in a float 4, and the lead switch is fixed in a valve at a detection position. The up and down movement of the float guided by the valve turns the lead switch 2 ON and OFF.

[0028] The upper outer wall of the connecting rod 1 is provided with an external thread section, and a nut is threadedly connected to the external thread section. Figure 3 As shown, a mounting hole with an internal thread is opened on the angle steel 7, and the angle steel 7 is fixed on a bracket 11 for installing an elevator car guide rail 8 in the elevator shaft. A beam 10 for installing the bracket 11 is installed in the elevator shaft, and a car guide rail 8 is installed on the bracket 11. The car guide rail 8 is connected to the car through a guide rail clamp 9. The external thread section of the connecting rod 1 is threaded into the mounting hole, and the upper end of the connecting rod 1 is passed through the mounting hole to thread the nut onto the external thread section, so as to support and connect the connecting rod 1, thereby improving the convenience of installing the connecting rod 1.

[0029] The flood sensor switch 6 is located above the floor of the elevator pit to detect whether the accumulated water level has reached the minimum electrical safety device height of the elevator pit. Once the lead switch 2 is activated, the action signal of the flood sensor switch 6 is transmitted to the elevator control device through the cable, and the elevator enters the flood control operation mode. If the elevator is at the lowest floor at this time, the machine at the bottom of the car will be flooded because the car is at the lowest floor when flooding. After the flooding is stopped, it takes time to replace the machine at the bottom of the car, which may cause a delay in recovery. Therefore, at the lowest floor, the control system will make the elevator run to the upper floor and then stop running. If the elevator is at a floor other than the lowest floor at this time, the elevator will stop running at the nearest floor.

[0030] After entering this controlled operation, the elevator cannot automatically reset. Only when professional technicians perform inspections and repairs and determine that the elevator can be started again, can they release the operation and restore it.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection device for detecting water ingress into an elevator pit, comprising a control device and a water ingress sensor switch (6), characterized in that: The control device is electrically connected to the water immersion sensor switch (6); The water immersion sensor switch (6) comprises a connecting rod (1) connected to the bottom of the elevator shaft, a lead switch (2) and a limiter (5), wherein the lead switch (2) is installed inside the connecting rod (1), a buoy (4) that can move up and down is sleeved on the outer wall of the connecting rod (1), a magnet (3) is installed inside the buoy (4), and limiters (5) are arranged at both ends of the connecting rod (1) located at the buoy (4); When the buoy (4) touches the lower end stopper (5), the lead switch (2) is not triggered, and when the buoy (4) touches the upper end stopper (5), the lead switch (2) is triggered.

2. A detection device for detecting water ingress into an elevator pit according to claim 1, characterized in that: The control device comprises a CPU board containing a HALL effect and a PCB board containing a HALL effect, and the CPU board and the PCB board are electrically connected.

3. A detection device for detecting water ingress into an elevator pit according to claim 2, characterized in that: The CPU board and the PCB board both include Hall sensors, and one pin and two pins of the Hall sensor in the CPU board are respectively connected to one pin and two pins of the Hall sensor in the PCB board.

4. A detection device for detecting water ingress into an elevator pit according to claim 3, characterized in that: The three pins of the Hall sensor in the PCB are connected to a diode D1 and a resistor R1, one end of the resistor R1 is connected to one end of a lead switch (2), and the four pins of the Hall sensor in the PCB are connected to the other end of the lead switch (2).

5. A detection device for detecting water ingress into an elevator pit according to claim 4, characterized in that: The lead switch (2) comprises a glass tube, in which an inert gas and a magnet are encapsulated.

6. A detection device for detecting water ingress into an elevator pit according to claim 5, characterized in that: The outer wall of the upper end of the connecting rod (1) is provided with an external thread section, and a nut is threadedly connected to the external thread section.

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