KR-20260063558-A - Preventing Pinching Device for Platform Screen Door

Abstract

The present invention relates to a platform screen door pinch prevention device, wherein the platform screen door pinch prevention device installed at the lower part of the horizontal frame of a platform screen door movable door comprises an upper case and a lower case inserted into the lower end of the upper case and moving up and down, wherein at least one spring is installed between the upper case and the lower case, and at least one roller is installed on the lower case to move along a guide rail.

Inventors

• 우종규

Assignees

• 한국철도공사

Dates

Publication Date

20260507

Application Date

20241030

Claims (7)

1. A platform screen door pinch prevention device installed at the bottom of the lower horizontal frame of the platform screen door includes a case, and The above case includes an upper case and a lower case inserted into the bottom of the upper case and moving up and down, and Inside the above case, at least one spring is installed between the upper case and the lower case, and The lower case above is equipped with at least one roller that moves along a guide rail, and A platform screen door pinch prevention device in which a protrusion protruding by a predetermined length from the bottom of the upper case and the top of the lower case interlocks and joins together.
2. In paragraph 1, A platform screen door pinch prevention device in which the upper case has openings at the top and bottom, and the top of the upper case is covered by a cover.
3. In paragraph 1, The above lower horizontal frame is a platform screen door pinch prevention device in which a tripod protruding by a predetermined length is installed on a surface located in the direction facing the track.
4. In paragraph 3, Platform screen door pinch prevention device in which the lower end of the tripod is cut to a predetermined height and a tripod reinforcement plate is installed inside the lower end of the tripod.
5. In paragraph 1, The above lower horizontal frame is a platform screen door pinch prevention device in which a baseboard is installed on the surface facing the platform, with the bottom cut to a predetermined height.
6. In paragraph 1, Platform screen door pinch prevention device including a lower horizontal frame reinforcing plate installed across the lower horizontal frame inside the lower horizontal frame.
7. In paragraph 1, The above platform screen door pinch prevention device is a platform screen door pinch prevention device inserted into the interior where the lower end of the lower horizontal frame is cut to a predetermined height.

Description

Platform Screen Door Pinch Prevention Device The present invention relates to a platform screen door pinch prevention device that can improve maintenance efficiency by installing a platform screen door pinch prevention device on a horizontal frame at the bottom of the platform screen door to prevent floor pinching and door detachment failures caused by uplift or subsidence of the platform floor. Due to seasonal changes such as heatwaves, platform screen doors at railway stations frequently experience failures such as getting stuck in the floor or detaching as the platform floor rises or subsides. Consequently, this jeopardizes the safety of railway customers and leads to a sharp increase in the number of dispatches for platform maintenance workers. The platform screen door is formed as a door consisting of two facing square frames, and the opening and closing mechanism consists of a head box drive system, a hanger bracket and door hanger connected to the upper horizontal frame of the screen door, and a guide rail that assists the movement of the platform screen door and prevents it from coming off. The platform screen doors open and close by moving to the left and right, respectively, driven by the head box drive system. A hanger bracket attached to the upper frame of the platform screen door is connected to a door hanger and timing belt inside the head box, and a guide shoe attached to the lower horizontal frame of the platform screen door moves along a guide rail attached to a door sill protruding from the platform floor to prevent the platform screen door from deviating. In particular, when the platform floor rises due to seasonal changes such as heatwaves, causing door pinching problems that occur when the door sill and the lower horizontal frame of the platform screen door come into contact, or when the guide shoe attached to the lower horizontal frame of the platform screen door and the guide rail installed on the door sill become separated due to subsidence of the platform floor, the door height must be adjusted by adjusting the door hanger jack bolt inside the head box to make a slight height difference or by adding a gap adjustment plate, which is a problem that must be repeated every year. FIG. 1 is a perspective view of the present invention. FIG. 2 is an exploded perspective view of the upper case and lower case of the present invention. Figure 3 is a cross-sectional view of AA of Figure 1. Figure 4 is a cross-sectional view of BB in Figure 1. FIG. 5 is a cross-sectional view of the lower horizontal frame of the platform screen door of the present invention. The platform screen door pinch prevention device of the present invention is characterized by improving maintenance efficiency by mounting the platform screen door pinch prevention device on the horizontal frame at the bottom of the platform screen door to prevent floor pinching or door detachment failure of the platform screen door caused by uplift or subsidence of the platform floor, and the present invention will be described below with reference to the attached drawings. FIG. 1 is a perspective view of the present invention, and FIG. 2 is an exploded perspective view of the upper case and lower case of the present invention. Referring to the drawings, the platform screen door pinch prevention device (1) includes a case (100), and the case (100) includes an upper case (110) formed long in the longitudinal direction of the guide rail (20) and a lower case (120) formed long in the longitudinal direction of the guide rail (20), and the lower case (120) is inserted into the lower end of the upper case (110) and is capable of moving up and down. The upper case (110) is inserted into the lower end of the lower horizontal frame (11) of the platform screen door (10), and the lower horizontal frame (11) is processed by cutting off the lower end so that the platform screen door pinch prevention device (1) can be inserted and mounted. The lower horizontal frame (11), with its lower end cut off and open, is placed on one side of the upper case (110). The upper case may be formed in a '□' shape with the top and bottom open when viewed from the side cross-section, and both top and bottom ends of the upper case (110) protrude inward by a predetermined length from the side cross-section. Additionally, the lower case (120) may be formed in an 'H' shape when viewed from the side cross-section, and both top ends of the lower case (120) protrude outward by a predetermined length from the side cross-section. The protruding part at the bottom of the upper case (110) and the protruding part at the top of the lower case (120) can be interlocked and joined together. Furthermore, the open top of the upper case (110) can be covered using a cover (111). FIG. 3 is a cross-sectional view along line A-A of FIG. 1, and FIG. 4 is a cross-sectional view along line B-B of FIG. 1. Referring to the drawings, a spring (130) and a roller (140) are further installed inside the