A middle-split double-fold door machine and shutter structure of a landing door device

Abstract

A middle-split double-fold door machine and a shutter structure of a landing door device disclosed by the present invention include a door head bottom plate, two shutter hanging plates, shutter guide rails, and two shutter door panels. The shutter guide rails are fixed on the door head bottom plate, and each shutter is hung on the corresponding shutter hanging plate. It is characterized in that a first shutter guide rail track and a second shutter guide rail track which are not on the same axis are arranged on the shutter guide rails, and the two shutter hanging plates are respectively hung on the first shutter guide rail track and the second shutter guide rail track through a pair of shutter rollers. Since the two shutter hanging plates are respectively hung on the first shutter guide rail track and the second shutter guide rail track through the shutter rollers, interference will not occur, the length of the shutter hanging plates can be increased, and the distance between a pair of shutter rollers can be increased. It is ensured that when the lower end of the door panel is hindered by an external force during closing, the door gap will not be greater than 45 mm, meeting the national standard requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and particularly relates to a center-opening double-fold door machine and a shutter structure of a landing door device. Background Art

[0002] The elevator door system is an important part of an elevator. When the elevator stops at a station, it is the passage for passengers to enter and exit the car; when the elevator is not at the station, it is a safety barrier that isolates passengers from the hoistway.

[0003] Currently, the types of elevator door systems with large usage are center-opening doors, center-opening double-fold doors, and side-opening double-fold doors. Among them, the center-opening double-fold door has the advantage of saving the width of the elevator hoistway. A wider entrance can be designed on an elevator hoistway with a certain width, facilitating passengers to enter and exit the elevator. The reason why the center-opening double-fold door can save the hoistway width is that when it is opened, the four door panels are horizontally folded in pairs, and the widths of two door panels overlap to form one door panel. The disadvantage is that the width of the door leaf of the center-opening double-fold door is only half of that of the center-opening door, and the distance between the lower rollers of the door hanger is very small. When the clear opening width of the door is small, it is difficult to meet the requirements of Article 7.2.3.2 in GB7588: For horizontal sliding doors and folding doors, the active clearance can be greater than 6 mm, but shall not be greater than the following values: a) For side-opening doors, 30 mm; b) For center-opening doors, the total is 45 mm.

[0004] The regulation in Article 7.2.3.2 of GB7588 is to avoid shear accidents caused by the elevator running with the landing door closing when a passenger steps on the landing door sill. Specifically, as Figures 1 to 3 shown, part 1 is the door head bottom plate, parts 2 and 3 are the slow door hanging plates, parts 4 and 5 are the shutter hanging plates, part 6 is the slow door guide rail, part 7 is the shutter guide rail, part 8 is the shutter door panel, and part 9 is the slow door panel. The slow door guide rail 6 and the shutter guide rail 7 are fixed on the door head bottom plate 1. The slow door hanging plates 2 and 3 slide horizontally on the slow door guide rail 6, and the shutter hanging plates 4 and 5 slide horizontally on the shutter guide rail 7. Refer to Figure 3 , remove the slow door hanging plates 2 and 3, and only consider the shutter. The width B of each shutter door panel 8 is the clear opening width OP divided by 4. When the clear opening width OP is small, the distance A between the lower rollers of the shutter hanging plate is very small. When an external force is applied to the lower end of the shutter door panel 8, its prying gap cannot meet the requirements of Article 7.2.3.2 in GB7588. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a center-opening double-fold door machine and a shutter structure of a landing door device for the above-mentioned deficiencies existing in the existing center-opening double-fold doors. When the clear opening width of the door is small, through the center-opening double-fold door machine and the shutter structure of the landing door device of the present invention, the distance between the lower rollers of the hanging door plate is increased. When a 150 N human force (without tools) is applied to the most unfavorable point on the door plate, it is ensured that the gap between the two active door leaves is not less than 45 mm, meeting the national standard requirements.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A middle-opening double-fold door machine and a shutter structure of a landing door device, including a door head bottom plate, two shutter hanging plates, shutter guide rails, and two shutter door panels. The shutter guide rails are fixed on the door head bottom plate, and each shutter is hung on the corresponding shutter hanging plate. The characteristics are that the shutter guide rails are provided with a first shutter guide rail track and a second shutter guide rail track that are not on the same axis, and the two shutter hanging plates are respectively hung on the first shutter guide rail track and the second shutter guide rail track through a pair of shutter rollers. Since the two shutter hanging plates are respectively hung on the first shutter guide rail track and the second shutter guide rail track through shutter rollers, interference will not occur, the length of the shutter hanging plate can be increased, and the distance between a pair of shutter rollers can be increased. It is ensured that when the lower end of the door panel is hindered by an external force during closing, the door gap will not be greater than 45 mm, meeting the national standard requirements.

[0008] In a preferred embodiment of the present invention, the shutter track is provided with bending parts on the upper and lower sides along the length direction. The first shutter guide rail track is arranged on the outer surface of at least one bending part, and the second shutter guide rail track is arranged on the inner surface of at least one bending part.

[0009] In a preferred embodiment of the present invention, the first shutter guide rail track and the second shutter guide rail track are not on the same plumb plane.

[0010] Due to the adoption of the above technical solutions, the shutter guide rail in the present invention adopts a sheet metal bending structure. One shutter hanging plate runs on the second shutter guide rail track inside the shutter guide rail, and the other shutter hanging plate runs on the first shutter guide rail track outside the shutter guide rail. Interference between the two shutter hanging plates will not occur. Therefore, the length of the shutter hanging plate can be greater than the clear opening width / 4, increasing the distance between a pair of shutter rollers, and ensuring that when an external force is applied to the most unfavorable point of the door panel, the gap will not be greater than 45 mm. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of an existing middle-opening double-fold door.

[0012] Figure 2 It is Figure 1 a side view of

[0013] Figure 3 It is a schematic structural diagram of an existing middle-opening double-fold door after removing the slow door hanging plate and the slow door panel.

[0014] Figure 4 It is a schematic structural diagram of a middle-opening double-fold door including the middle-opening double-fold door machine and the shutter structure of the landing door device of the present invention.

[0015] Figure 5 is Figure 4 a side view of

[0016] Figure 6 is a schematic structural view of the middle - split double - folding door removing the slow - door hanging plate and the slow - door door panel, including the middle - split double - folding door machine of the present invention and the shutter structure of the landing door device.

[0017] Figure 7 is Figure 6 a view from direction A of Specific embodiments

[0018] The invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Refer to Figure 4 and Figure 5 The middle - split double - folding door shown in the figure, including the middle - split double - folding door machine of the present invention and the shutter structure of the landing door device, comprises a door head bottom plate 1, slow - door hanging plates 2 and 3, shutter hanging plates 4 and 5, slow - door guide rails 6, shutter guide rails 10, two shutter door panels 8, and two slow - door door panels 9.

[0020] The slow - door guide rails 6 and the shutter guide rails 10 are fixed on the door head bottom plate 1. The slow - door hanging plates 2 and 3 are respectively horizontally slid on the slow - door guide rails 6 through slow - door rollers 2a and 3a. One slow - door door panel 9 is hung on the slow - door hanging plate 2, and the other slow - door door panel 9 is hung on the slow - door hanging plate 3. One shutter door panel 8 is hung on the shutter hanging plate 4, and the other shutter door panel 8 is hung on the shutter hanging plate 5.

[0021] Refer to Figure 6 and Figure 7 Remove the slow - door hanging plates 2 and 3 and only consider the shutter. The shutter rail 10 is provided with bending parts 11 and 12 along the upper and lower sides parallel to the length direction. Outer shutter guide rail tracks 11a and 12a (the aforementioned first shutter guide rail tracks) are provided on the outer surfaces of the bending parts 11 and 12, and inner shutter guide rail tracks 11b and 12b (the aforementioned second shutter guide rail tracks) are provided on the inner surfaces of the bending parts 11 and 12. The outer shutter guide rail tracks 11a and 12a and the inner shutter guide rail tracks 11b and 12b are not in the same vertical plane.

[0022] The shutter suspension plate 4 is hung on the outer shutter guide rail track 11a through a pair of shutter rollers 4a, and the shutter suspension plate 5 is hung on the inner shutter guide rail track 12b through a pair of shutter rollers 5a. Since the outer shutter guide rail tracks 11a, 12a and the inner shutter guide rail tracks 11b, 12b are not on the same vertical plane, the shutter suspension plates 4 and 5 do not run on the same plane and will not interfere with each other. Therefore, the lengths of the shutter suspension plates 4 and 5 can be increased, and the distance A between the pair of shutter rollers 4a, 5a can be designed to be greater than 1 / 4 of the clear opening width OP (the width B of each shutter door panel 8), where the clear opening width OP is divided by 4. When a force in the opposite direction of opening acts on the lower end of the door panel, the shutter door panel 8 rotates around the rotation center C. Since the value of the distance A between the pair of shutter rollers 4a, 5a increases and the rotation radius increases, the gap for prying open decreases. When a 150N human force (without tools) is applied to the most unfavorable point on one shutter door panel 8, the gap between the two shutter door panels 8 will not be greater than 45mm, meeting the national standard requirements.

Claims

1. A middle-dividing double-fold door machine and a shutter structure of a landing door device, comprising a door head bottom plate, two shutter hanging plates, shutter guide rails, and two shutter door panels. The shutter guide rails are fixed on the door head bottom plate, and each shutter door panel is hung on the corresponding shutter hanging plate. It is characterized in that, The shutter guide rail is provided with a first shutter guide rail track and a second shutter guide rail track that are not on the same axis, and two shutter hanging plates are respectively hung on the first shutter guide rail track and the second shutter guide rail track through a pair of shutter rollers; The shutter guide rail is provided with bending parts on the upper and lower sides along the length direction, the first shutter guide rail track is arranged on the outer surface of at least one bending part, and the second shutter guide rail track is arranged on the inner surface of at least one bending part; The first shutter guide rail track and the second shutter guide rail track are not on the same plumb plane; the distance A between the pair of shutter rollers is designed to be greater than 1 / 4 of the clear opening width OP.

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