CN221051274U - An inspection device capable of detecting a person falling into a pit - Google Patents

Abstract

The utility model belongs to the technical field of elevator equipment, concretely relates to inspection device of pit that can detect personnel falls, including the elevator shaft, the shaft bottom terrace is installed to the lower extreme of elevator shaft, the inside of elevator shaft is provided with clean mechanism, a plurality of mounting grooves have been seted up to the upper surface of shaft bottom terrace, microwave radar and the infrared sensor who staggers with microwave radar are all installed to the lower wall of mounting groove, transparent glass has all been inserted to the opening part of mounting groove, transparent glass's upper surface is cleaned through clean mechanism, clean mechanism includes the level setting at the inside cleaning brush of elevator shaft, the equal horizontal installation in both sides of elevator shaft has electric slide rail, the upper surface of two electric slide rail is connected in the both ends of cleaning brush respectively, the foam board is installed in the equal embedding of two slider lower surfaces. The utility model discloses can utilize two types of sensors to combine to judge accurately that it is personnel to fall, do not receive condition restriction such as well darkness simultaneously.

Description

An inspection device capable of detecting a person falling into a pit

Technical Field

The utility model belongs to the technical field of elevator equipment, and specifically relates to an inspection device capable of detecting a person falling into a pit.

Background technique

With the advancement of urbanization, the number of high-rise buildings in my country has increased year by year, the use of elevators has become more and more popular, and elevator accidents occur frequently every year. Adding protective devices in the elevator shaft is an effective means to reduce the casualty rate of elevator accidents. The existing elevator car uses sensors to measure speed in real time. When stall occurs, the airbag is inflated to provide emergency protection for the elevator car.

After patent search, the Chinese utility model patent with the existing announcement number CN219238925U is an elevator anti-fall device, including an anti-fall deceleration top, a sensor and an anti-fall card, an elevator shaft side wall, an elevator car, an anti-fall deceleration top and an anti-fall card. It can lock the anti-fall card when the sensor detects that the running speed of the elevator car exceeds the preset value, thereby braking the elevator car, avoiding the fall of the elevator car, reducing personal injury and equipment damage caused by the fall of the elevator car, and has high operational reliability, which greatly avoids the occurrence of small accidents and reduces the damage caused by large accidents.

When the above patent detects an elevator accident, the running speed of the elevator car is detected by the sensor in order to detect the stall situation in time. However, when a person falls into the elevator shaft and does free fall, there is no stall signal, and it is difficult for the sensor to detect the person's fall. For this reason, we propose an inspection device that can detect people falling into the pit.

Utility Model Content

The purpose of the utility model is to provide an inspection device which can detect a person falling into a pit, and can use two types of sensors to combine and judge, so as to accurately judge that it is a person who has fallen, and is not restricted by conditions such as dimness of the well.

The technical solutions adopted in this utility are as follows:

An inspection device capable of detecting a person falling into a pit comprises an elevator shaft, wherein a pit floor is installed at the lower end of the elevator shaft, a cleaning mechanism is arranged inside the elevator shaft, a plurality of installation grooves are provided on the upper surface of the pit floor, microwave radars and infrared sensors staggered with the microwave radars are installed on the lower walls of the installation grooves, transparent glass is inserted at the openings of the installation grooves, the upper surface of the transparent glass is cleaned by the cleaning mechanism, and the two types of sensors are combined to accurately determine that the person who has fallen is a person, and the transparent glass can block the dust flying in the elevator shaft and will not hinder the detection, and has the characteristics of high precision and good reliability, and is not restricted by conditions such as the dimness of the shaft, and then the pit bottom protection measures are promptly started to reduce the occurrence of people falling into the pit at the bottom of the elevator shaft.

The cleaning mechanism includes a cleaning brush horizontally arranged inside the elevator shaft. Electric slide rails are horizontally installed on both sides of the elevator shaft. The upper surfaces of the two electric slide rails are respectively connected to the two ends of the cleaning brush. The two electric slide rails can be started to intermittently drive the bristles of the cleaning brush to reciprocate along the upper surface of the floor at the bottom of the shaft to sweep away dust attached to the transparent glass and keep the detection line of sight clear.

Ash storage troughs are provided on both sides of the well bottom floor, and the two ash storage troughs are parallel to the cleaning brushes. The two ash storage troughs are used to receive the dust swept down by the cleaning brushes for easy collection.

Slide blocks are slidably installed on the upper surfaces of the two electric slide rails, holes are opened on the sides of the two slide blocks that are close to each other, and the holes are respectively connected to the two ends of the cleaning brush, and foam plates are embedded and installed on the lower surfaces of the two slide blocks. The two ends of the cleaning brush are respectively supported by the two slide blocks. Once a falling object (personnel or other objects) hits the cleaning brush, the cleaning brush is driven to tear the two foam plates downward, so that the cleaning brush 7 is separated from the two electric slide rails and the slide blocks, and the two electric slide rails will not be excessively squeezed.

A plurality of drainage pipes are also installed through the upper surface of the well bottom floor. There is a distance between the drainage pipes and the installation grooves. On rainy days, water is prone to accumulate in the elevator well. The drainage pipes can be connected to the drainage pipeline to drain water and prevent the accumulated water from soaking the microwave radar and infrared sensor.

The outer side of the transparent glass is bonded with a waterproof rubber ring in an annular structure, which can close the gap between the outer side of the transparent glass and the edge of the corresponding installation groove, thereby improving the sealing performance of the microwave radar and the infrared sensor during installation.

The technical effects achieved by this utility model are:

The utility model discloses an inspection device capable of detecting a person falling into a pit. When working, a microwave radar in an installation groove of the well bottom floor detects whether an elevator car, a counterweight or other sunken objects are running in the elevator well. Meanwhile, an infrared sensor can judge whether the fallen object is a tool or a living thing. The detection device combines the two types of sensors to make judgments, thereby accurately judging that it is a person who has fallen. Moreover, the transparent glass can block the dust flying in the elevator well and will not hinder the detection. The device has the characteristics of high precision and good reliability. Meanwhile, the device is not restricted by conditions such as the darkness of the well. The pit bottom protection measures are then started in time to reduce the occurrence of people falling into the pit at the bottom of the elevator well.

The utility model discloses a detection device capable of detecting a person falling into a pit, which can start two electric slide rails to intermittently drive the bristles of a cleaning brush to move back and forth along the upper surface of the pit bottom floor, sweeping away dust attached to the transparent glass and keeping the detection sight clear.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a main view of an embodiment of the present utility;

Fig. 2 is a cross-sectional view of an embodiment of the present utility;

FIG3 is an enlarged embodiment of the point A in FIG2 of the present utility model;

FIG. 4 is an enlarged embodiment of point B in FIG. 2 of the present invention.

In the accompanying drawings, the components represented by the reference numerals are listed as follows:

1. Elevator shaft; 2. Shaft bottom floor; 3. Installation groove; 4. Microwave radar; 5. Infrared sensor; 6. Transparent glass; 7. Cleaning brush; 8. Electric slide rail; 9. Ash storage trough; 10. Slider; 11. Foam board; 12. Drain pipe; 13. Waterproof rubber ring.

Detailed ways

In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

As shown in Fig. 1-4, an inspection device capable of detecting a person falling into a pit comprises an elevator shaft 1, a shaft bottom floor 2 is installed at the lower end of the elevator shaft 1, the outer side of the shaft bottom floor 2 is integrally connected to the lower end of the elevator shaft 1, a cleaning mechanism is arranged inside the elevator shaft 1, a plurality of mounting grooves 3 are arranged on the upper surface of the shaft bottom floor 2, a microwave radar 4 and an infrared sensor 5 staggered with the microwave radar 4 are installed on the lower wall of the mounting groove 3, the microwave radar 4 adopts the TTCsensor24G millimeter wave radar, the infrared sensor 5 adopts the ranging sensor of model LTF12UC2LDQP, and the sensing distance is 20m, the microwave radar 4 integrates speed, acceleration and displacement detection sensors, the lower end of the infrared sensor 5 and the lower end of the microwave radar 4 are fixedly connected to the lower wall of the corresponding mounting groove 3 by screws, a transparent glass 6 is inserted at the opening of the mounting groove 3, and the upper surface of the transparent glass 6 is cleaned by the cleaning mechanism, First, the elevator car is set up inside the elevator shaft 1. When working, the microwave radar 4 in the installation groove 3 of the bottom floor 2 of the shaft detects whether the moving object running in the elevator shaft 1 (the moving object close to the pit) is the elevator car, counterweight or other sunken objects. The speed, acceleration and displacement of the elevator car and counterweight in normal operation have certain rules, and the built-in algorithm can be used for the detection device to judge. At the same time, the infrared sensor 5 can judge whether the fallen object is a tool (such as a wrench dropped by a maintenance worker) or a living thing (a person), so as to accurately judge that the person who fell is a person, and the transparent glass 6 can block the dust flying in the elevator shaft 1, and will not hinder the detection. The detection device uses the two types of sensors to combine and judge, so as to accurately judge whether the falling object is a person, and has the characteristics of high precision and good reliability. At the same time, it is not restricted by conditions such as dim shaft, and then the pit bottom protection measures are activated in time to reduce the occurrence of people falling into the pit of the elevator shaft 1.

As shown in Figures 2 and 4, the cleaning mechanism includes a cleaning brush 7 horizontally arranged inside the elevator shaft 1. Electric slide rails 8 are horizontally installed on both sides of the elevator shaft 1. The lower surfaces of the two electric slide rails 8 are respectively embedded and installed on both sides of the elevator shaft 1. The upper surfaces of the two electric slide rails 8 are respectively connected to the two ends of the cleaning brush 7. The two electric slide rails 8 can be started once every hour to intermittently drive the bristles of the cleaning brush 7 to reciprocate along the upper surface of the shaft bottom floor 2 to sweep off the dust attached to the transparent glass 6 and keep the detection line of sight clear.

As shown in FIG. 1 and FIG. 2 , ash storage troughs 9 are provided on both sides of the well bottom floor 2. The two ash storage troughs 9 are parallel to the cleaning brush 7. The two ash storage troughs 9 receive the dust swept by the cleaning brush 7 for easy collection.

As shown in Figures 2 and 4, sliders 10 are slidably installed on the upper surfaces of the two electric slide rails 8, and the lower surfaces of the two sliders 10 are respectively slidably connected to the upper surfaces of the two electric slide rails 8. Holes are opened on the sides of the two sliders 10 that are close to each other, and the holes are respectively sleeved on the two ends of the cleaning brush 7. Foam plates 11 are embedded and installed on the lower surfaces of the two sliders 10. The two sliders 10 support the two ends of the cleaning brush 7 respectively. Once a falling object (personnel or other objects) hits the cleaning brush 7, it drives the cleaning brush 7 to tear the two foam plates 11 downward, so that the cleaning brush 7 is separated from the two electric slide rails 8 and the sliders 10, and the two electric slide rails 8 will not be excessively squeezed.

As shown in Figures 1 and 2, a plurality of drainage pipes 12 are installed through the upper surface of the well bottom floor 2. The lower ends of the drainage pipes 12 are downwardly penetrated through the upper surface of the well bottom floor 2. There is a gap between the drainage pipes 12 and the installation grooves 3. On rainy days, water is prone to accumulate in the elevator well 1. The drainage pipes 12 can be connected to the drainage pipeline for drainage to prevent the accumulated water from soaking the microwave radar 4 and the infrared sensor 5.

As shown in Figures 1 and 3, the outer side of the transparent glass 6 is bonded with a waterproof rubber ring 13 with a ring structure, and the inner side of the waterproof rubber ring 13 is bonded to the outer side of the corresponding transparent glass 6, which can close the gap between the outer side of the transparent glass 6 and the edge of the corresponding installation groove 3, thereby improving the sealing of the bubble microwave radar 4 and the infrared sensor 5 during installation.

The working principle of the utility model is: when working, the microwave radar 4 in the installation groove 3 of the well bottom floor 2 detects that what is running in the elevator well 1 is the elevator car, counterweight or other sunken objects, and a built-in algorithm can be used for the detection device to make a judgment. At the same time, the infrared sensor 5 can judge whether the fallen object is a tool or a living thing, so as to accurately judge that the fallen object is a person, and the transparent glass 6 can block the dust flying in the elevator well 1, and will not hinder the detection. The detection device uses the two types of sensors to make a combined judgment, so as to accurately judge whether the falling object is a person, and is not restricted by conditions such as the darkness of the well. Then the pit bottom protection measures are activated in time to reduce the occurrence of people falling into the pit at the bottom of the elevator well 1.

At the same time, the two electric slide rails 8 can be started to intermittently drive the bristles of the cleaning brush 7 to move back and forth along the upper surface of the well bottom floor 2 once every hour to sweep away the dust attached to the transparent glass 6 and keep the detection line of sight clear.

The above is only a preferred implementation of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims (6)

1. The utility model provides an inspection device that can detect personnel pit that falls, includes elevator shaft (1), its characterized in that: the elevator is characterized in that a shaft bottom terrace (2) is arranged at the lower end of the elevator shaft (1), a cleaning mechanism is arranged in the elevator shaft (1), a plurality of mounting grooves (3) are formed in the upper surface of the shaft bottom terrace (2), microwave radars (4) and infrared sensors (5) staggered with the microwave radars (4) are arranged on the lower wall of each mounting groove (3), transparent glass (6) is inserted into the opening of each mounting groove (3), and the upper surface of each transparent glass (6) is cleaned through the cleaning mechanism.

2. The inspection device capable of detecting a falling pit of a person according to claim 1, wherein: the cleaning mechanism comprises a cleaning brush (7) horizontally arranged inside the elevator shaft (1), electric sliding rails (8) are horizontally arranged on two sides of the elevator shaft (1), and the upper surfaces of the two electric sliding rails (8) are respectively connected to two ends of the cleaning brush (7).

3. An inspection apparatus capable of detecting a falling pit of a person according to claim 2, wherein: both sides of the well bottom terrace (2) are provided with ash storage grooves (9), and the two ash storage grooves (9) are parallel to the cleaning brush (7).

4. An inspection apparatus capable of detecting a falling pit of a person according to claim 2, wherein: the upper surfaces of the two electric sliding rails (8) are also provided with sliding blocks (10) in a sliding manner, one sides of the two sliding blocks (10) close to each other are provided with holes, the holes are respectively sleeved at two ends of the cleaning brush (7), and foam plates (11) are embedded and arranged on the lower surfaces of the two sliding blocks (10).

5. The inspection device capable of detecting a falling pit of a person according to claim 1, wherein: the upper surface of shaft bottom terrace (2) still runs through and installs a plurality of drain pipes (12), all leave the interval between drain pipe (12) and mounting groove (3).

6. The inspection device capable of detecting a falling pit of a person according to claim 1, wherein: the outer sides of the transparent glass (6) are adhered with waterproof rubber rings (13) with annular structures.