Passenger falling protection device for escalator

Abstract

The utility model discloses a passenger falling protection device for an escalator, which belongs to the technical field of escalators, and comprises a first light curtain arranged in a truss, step running guide rails are symmetrically arranged in the truss, and a second light curtain is arranged in the truss. The first light curtain is installed on the bottom face of the stair running guide rail on any side, and a second light curtain is installed on the bottom face of the stair running guide rail on the side away from the first light curtain. Through cooperative use of the first light curtain and the second light curtain, if a passenger falls off due to step vacancy, the passenger can block infrared light beams emitted by the second light curtain, so that part of receiving light beads on the first light curtain cannot receive the infrared light beams emitted by the second light curtain; at the moment, the first light curtain can quickly send out a signal to stop the operation of the escalator, so that the safety of passengers is effectively protected, and the accident that the passengers are twisted by the escalator due to step vacancy is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of escalators, in particular to a passenger fall protection device used for escalators. Background Art

[0002] An escalator is an electric mechanical device that is usually used to transport passengers within a building, especially in crowded places such as shopping malls, subway stations, airports, etc. An escalator consists of a series of connected walkways that move along a continuous track system. Passengers can stand or walk on it to quickly move to their destination. In crowded places, escalators can disperse and balance the crowd, thereby reducing congestion and pressure on the stairs and improving the overall efficiency of passenger transportation. By providing a fast and convenient vertical transportation method, escalators have improved people's travel experience in modern urban life and have become one of the indispensable important facilities in modern buildings. Although escalators have high safety, there have been cases where passengers have fallen due to missing steps in the escalator and were strangled by the running escalator. Although escalators are equipped with vacancy protection devices, traditional vacancy protection is a point protection method with a total of 2 detection points in the upper and lower parts. If a step falls, but it has exceeded the detection point, then the vacancy fault cannot be detected within at least one detection cycle. Utility Model Content

[0003] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a passenger fall protection device for an escalator, comprising a first light curtain arranged in a truss, wherein step running guide rails are symmetrically arranged in the truss, the first light curtain is installed on the bottom surface of the step running guide rail on either side, and a second light curtain is installed on the bottom surface of the step running guide rail on the side away from the first light curtain, and the first light curtain is used in conjunction with the second light curtain.

[0004] Through the above technical solution, the step running rail is used to support and guide the operation of the steps. By installing the first light curtain and the second light curtain at the bottom of the step running rail, compared with the traditional point protection method, this protective device provides more comprehensive protection for passengers.

[0005] The utility model is further configured such that the second light curtain is a light curtain transmitter, and a plurality of emitting light beads are equidistantly arranged in the second light curtain, and the emitting light beads are used to emit infrared light beams.

[0006] The utility model is further configured such that the first light curtain is a light curtain receiver, and receiving light beads having the same number as the emitting light beads are equidistantly arranged in the first light curtain, the receiving light beads correspond to the emitting light beads one by one in sequence, and the receiving light beads are used to receive the infrared light beams emitted by the emitting light beads.

[0007] Through the above technical solution, the first light curtain can monitor whether the infrared light beam emitted by the second light curtain is blocked. If all the receiving lamp beads on the first light curtain receive the infrared light beam, it means that no passenger has fallen. If a passenger falls due to a vacant step, the passenger will block the infrared light beam emitted by the second light curtain, causing some of the receiving light beads on the first light curtain to be unable to receive the infrared light beam emitted by the second light curtain. At this time, the first light curtain will quickly send a signal to stop the operation of the escalator, effectively protecting the safety of passengers and preventing passengers from being injured by the escalator due to vacant steps.

[0008] The utility model is further configured that escalator steps are installed on the step running guide rail, and the first light curtain and the second light curtain are both arranged at the bottom end of the escalator steps.

[0009] Through the above technical solution, when there is a gap in the escalator steps, the infrared beam protection surface formed between the first light curtain and the second light curtain will be exposed. When passengers or foreign objects fall through the gap in the escalator steps, the escalator will be quickly shut down, thereby improving the safety of the escalator.

[0010] The beneficial effects of the utility model are as follows:

[0011] The utility model uses a first light curtain in conjunction with a second light curtain. The first light curtain can monitor whether the infrared light beam emitted by the second light curtain is blocked. If all receiving lamp beads on the first light curtain receive the infrared light beam, it indicates that no passenger has fallen. If a passenger falls due to a vacant step, the passenger will block the infrared light beam emitted by the second light curtain, causing some receiving light beads on the first light curtain to be unable to receive the infrared light beam emitted by the second light curtain. At this time, the first light curtain will quickly send a signal to stop the operation of the escalator, effectively protecting the safety of the passengers and preventing the occurrence of passengers being injured by the escalator due to the vacant step. The first light curtain and the second light curtain are installed at the bottom of the step running guide rail. Compared with the traditional point protection method, the protective device provides more comprehensive protection for passengers and has higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the utility model in use;

[0013] Figure 2 For the utility model Figure 1 Schematic diagram of the plane;

[0014] Figure 3 For this utility model Figure 2 A magnified view of part A;

[0015] Figure 4 For this utility model Figure 2Magnified view of part B.

[0016] In the figure: 1. Truss; 2. Step running rail; 3. Escalator steps; 4. First light curtain; 5. Second light curtain. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , a passenger fall protection device for an escalator, comprising a first light curtain 4 arranged in a truss 1, a step running guide rail 2 symmetrically arranged in the truss 1, the first light curtain 4 is installed on the bottom surface of the step running guide rail 2 on either side, a second light curtain 5 is installed on the bottom surface of the step running guide rail 2 on the side away from the first light curtain 4, the first light curtain 4 and the second light curtain 5 are used in conjunction with each other, an escalator step 3 is installed on the step running guide rail 2, and the first light curtain 4 and the second light curtain 5 are both arranged at the bottom end of the escalator step 3;

[0019] The second light curtain 5 is a light curtain transmitter, and a number of emitting light beads are equidistantly arranged inside the second light curtain 5. The emitting light beads are used to emit infrared light beams. The first light curtain 4 is a light curtain receiver, and the same number of receiving light beads as the emitting light beads are equidistantly arranged inside the first light curtain 4. The receiving light beads correspond to the emitting light beads one by one in sequence, and the receiving light beads are used to receive the infrared light beams emitted by the emitting light beads.

[0020] When the utility model is in use, under normal circumstances, the emitting light beads on the second light curtain 5 will continuously emit infrared light beams, and the receiving light beads on the first light curtain 4 will receive the infrared light beams emitted by the emitting light beads at the corresponding positions. If all the receiving light beads on the first light curtain 4 receive the infrared light beams, it means that no passenger has fallen. If there is a vacancy in the escalator step 3, the infrared light beam protection surface formed between the first light curtain 4 and the second light curtain 5 will be exposed. When a passenger or a foreign object falls through the vacant escalator step 3, the infrared light beam emitted by the second light curtain 5 will be blocked, resulting in some receiving light beads on the first light curtain 4 being unable to receive the infrared light beam emitted by the second light curtain 5. At this time, the first light curtain 4 will quickly send a signal to stop the operation of the escalator, effectively protecting the safety of the passengers and preventing the occurrence of passengers being injured by the escalator due to the vacant steps.

[0021] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A passenger fall protection device for an escalator, comprising a first light curtain (4) arranged in a truss (1), characterized in that: The truss (1) is symmetrically provided with a step running guide rail (2), the first light curtain (4) is installed on the bottom surface of the step running guide rail (2) on either side, and a second light curtain (5) is installed on the bottom surface of the step running guide rail (2) on the side away from the first light curtain (4), and the first light curtain (4) and the second light curtain (5) are used in conjunction with each other.

2. A passenger fall protection device for an escalator according to claim 1, characterized in that: The second light curtain (5) is a light curtain transmitter, and a plurality of emitting light beads are arranged at equal intervals inside the second light curtain (5), and the emitting light beads are used to emit infrared light beams.

3. A passenger fall protection device for an escalator according to claim 2, characterized in that: The first light curtain (4) is a light curtain receiver. The first light curtain (4) is provided with receiving light beads having the same number as the emitting light beads at equal intervals. The receiving light beads correspond to the emitting light beads one by one in sequence. The receiving light beads are used to receive infrared light beams emitted by the emitting light beads.

4. A passenger fall protection device for an escalator according to claim 1, characterized in that: An escalator step (3) is installed on the step running guide rail (2), and the first light curtain (4) and the second light curtain (5) are both arranged at the bottom end of the escalator step (3).

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