A multi-point lifting flexible door

Abstract

This utility model relates to the field of flexible door technology, and specifically provides a multi-point lifting flexible door. The upper end of the flexible door body is fixedly connected to the upper frame of the door frame, and the two sides are slidably connected to the side frames of the door frame. The lower end of the flexible door body is connected to the bottom beam. The multi-point lifting drive mechanism includes multiple winches set above the door frame. The free ends of the steel wire ropes wound on the winches on both sides extend downward, pass around the fixed pulleys at corresponding positions on the bottom beam, and then extend towards the side frames on the same side, and are connected to a spring-type pin structure. A pin locking plate is provided at the lower end of each of the two side frames. The free ends of the steel wire ropes wound on the remaining winches are fixedly connected to the corresponding positions on the bottom beam. This utility model controls the opening and closing of the flexible door body through multi-point lifting, eliminating the risk of the door body falling due to steel wire rope breakage. Moreover, the spring-type pin structure ensures that the door body can be locked onto the door frame after closing in windy weather.

Description

Technical Field

[0001] This utility model relates to the field of flexible door technology, and in particular provides a multi-point lifting flexible door. Background Technology

[0002] In flexible doors controlled by steel wire ropes, there are usually only two steel wire ropes. When one steel wire rope breaks, the entire weight of the flexible door will fall onto the other steel wire rope, which can easily cause the other steel wire rope to break as well, resulting in the flexible door falling. Furthermore, existing flexible doors usually do not have a locking device after closing. In windy weather, the bottom beam of the flexible door can be lifted by the wind, creating a large gap between it and the ground, causing the door to become unstable. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a multi-point lifting flexible door.

[0004] This utility model is implemented as follows: a multi-point lifting flexible door is provided, including a door frame, a flexible door body, and a multi-point lifting drive mechanism. The upper end of the flexible door body is fixedly connected to the upper frame of the door frame, and the two sides are slidably connected to the side frames of the door frame. The lower end of the flexible door body is connected to the bottom beam. The multi-point lifting drive mechanism includes multiple winches arranged above the door frame. Each winch has a steel wire rope wound on its drum. The free ends of the steel wire ropes wound on the winches on both sides extend downward, pass around the fixed pulleys at corresponding positions on the bottom beam, and then extend towards the side frames on the same side, and are respectively connected to a spring-type pin structure. A pin locking plate is provided at the lower end of each of the two side frames. After the spring-type pin structure moves to the lower position, it is locked into the pin locking plate under the action of the spring. The free ends of the steel wire ropes wound on the remaining winches are fixedly connected to the corresponding positions on the bottom beam.

[0005] Preferably, the spring-type pin structure includes a pin rod, a spring, and a connecting limiting plate. The connecting limiting plate has upright plates on both sides. One end of the pin rod is connected to the wire rope, and the other end passes through the two upright plates of the connecting limiting plate. A spring is sleeved on the pin rod between the two upright plates. One end of the spring is connected to the upright plate of the connecting limiting plate near the wire rope, and the other end is connected to the pin rod. The pin retaining plate has a hole for the pin rod to pass through.

[0006] Preferably, each winch has rotatable connecting rods on both sides of the drum, a crossbar connecting the two connecting rods, and a proximity switch on the side of the connecting rod away from the drum at its original position. The proximity switch is signal-connected to the multi-point lifting drive mechanism. A square tube corresponding to the number of wire ropes is connected to the bottom beam, and each wire rope passes through the square tube and connects to the bottom beam or goes around the fixed pulley.

[0007] Preferably, there are four winches. The two winches on both sides share a drive motor with the winches adjacent to them via couplings, and the two winches in the middle are also connected via couplings.

[0008] Preferably, the flexible door body comprises multiple flexible door body units.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] This invention uses multi-point lifting control to open or close the flexible door, eliminating the risk of the door falling due to broken steel cables. Furthermore, it incorporates a spring-loaded latch structure that secures the door to the door frame after it is closed, ensuring that the bottom beam of the door will not be lifted by the wind in windy conditions. Attached Figure Description

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0012] Figure 1 This is a front view schematic diagram of the overall structure of this utility model (the left side is a sectional view);

[0013] Figure 2 for Figure 1 Enlarged structural diagram of position A in the middle;

[0014] Figure 3 for Figure 2 Enlarged structural diagram of position B in the middle;

[0015] Figure 4 This is a top view schematic diagram of the connection structure of multiple winches of this utility model;

[0016] Figure 5 This is an enlarged schematic diagram of a winch at one end. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0018] refer to Figures 1-5This utility model discloses a multi-point lifting flexible door, including a door frame 1, a flexible door body 2, and a multi-point lifting drive mechanism. The upper end of the flexible door body 2 is fixedly connected to the upper frame of the door frame 1, and the two sides are slidably connected to the side frames of the door frame 1. The lower end of the flexible door body 2 is connected to the bottom beam 3. The multi-point lifting drive mechanism includes multiple winches 4 set above the door frame 1. Each winch 4 has a steel wire rope 5 wound on its drum. The free ends of the steel wire ropes wound on the winches 4 on both sides extend downward, pass around the fixed pulleys 6 at the corresponding positions on the bottom beam 3, and then extend towards the side frames on the same side, and are respectively connected to a spring-type pin structure 7. A pin locking plate 8 is provided at the lower end of each of the two side frames. After the spring-type pin structure 7 moves to the lower position, it is locked into the pin locking plate 8 under the action of the spring. The free ends of the steel wire ropes 5 wound on the remaining winches 4 are fixedly connected to the corresponding positions on the bottom beam 3.

[0019] During the opening process of the flexible door provided by this utility model, the winch 4 starts, the drum rotates, and the steel wire rope 5 is wound onto the drum. The two steel wire ropes 5 on both sides pull the spring-type latch structure 7, and the spring-type latch structure 7 disengages from the latch plate 8. However, the steel wire rope 5 does not separate from the spring-type latch structure 7. All the steel wire ropes 5 begin to drive the flexible door body 2 to rise, and the flexible door body 2 folds together until it is fully opened. Then, the winch 4 stops working, and the door is open. During the closing process, the winch 4 starts, the drum rotates in the opposite direction, and the steel wire rope 5 extends downward. Under the weight of the flexible door body 2, the steel wire rope 5 is always in a taut state. When the flexible door body 2 descends to the fully closed state, the winch 4 continues to work for a period of time, the steel wire rope 5 is in a relaxed state, and the spring-type latch structure 7 is reinserted into the latch plate 8, completing the closing of the door.

[0020] As a specific implementation of the spring-type pin structure 7, the spring-type pin structure 7 includes a pin rod 9, a spring 10, and a connecting limiting plate 11. The connecting limiting plate 11 has upright plates on both sides. One end of the pin rod 9 is connected to the wire rope 5, and the other end passes through the two upright plates of the connecting limiting plate 11. The spring 10 is sleeved on the pin rod 9 between the two upright plates. One end of the spring 10 is connected to the upright plate of the connecting limiting plate 11 on the side closer to the wire rope 5, and the other end is connected to the pin rod 9. The pin retaining plate 8 has a hole for the pin rod 9 to pass through.

[0021] When the flexible door is opened, the wire rope 5 pulls the pin rod 9, the pin rod 9 retracts, compresses the spring 10, and disengages from the pin plate 8, but does not disengage from the two upright plates. When the flexible door is closed, after the flexible door body 2 descends to the bottom, when the winch 4 continues to work, the wire rope 5 relaxes, and the spring 10 drives the pin rod 9 to re-insert into the pin plate 8.

[0022] In order to ensure that the winch 4 can stop working in time after the flexible gate 2 reaches the top, as an improvement to the technical solution, a rotatable connecting rod 12 is provided on both sides of the drum of each winch 4, and a crossbar 13 is connected between the two connecting rods 12. On the side of the connecting rod away from the drum at its original position, a proximity switch 14 is provided. The proximity switch 14 is signal-connected to the multi-point lifting drive mechanism. A square tube 15 corresponding to the number of steel wire ropes 5 is connected to the bottom beam 3. Each steel wire rope 5 passes through the square tube 15 and connects to the bottom beam 3 or goes around the fixed pulley 6.

[0023] When the flexible gate 2 rises to the top, the square tube 15 hits the horizontal bar 13. The horizontal bar 13 swings upward under the action of the square tube 15 and moves away from the proximity switch 14. The proximity switch 14 sends a signal to the winch 4 through the controller, and the winch 4 stops working. During the closing process of the gate, the square tube 15 moves downward and the horizontal bar 13 returns to its original position under gravity.

[0024] Preferably, four winches 4 are provided. The two winches 4 on both sides share a drive motor 16 with the adjacent winches 4 via couplings, and the two winches 4 in the middle are also connected via couplings. The connection of the couplings can further enable the four winches 4 to work synchronously.

[0025] Preferably, the flexible door 2 comprises multiple flexible door units.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multi-point lifting flexible door, characterized in that, The system includes a door frame (1), a flexible door body (2), and a multi-point lifting drive mechanism. The upper end of the flexible door body (2) is fixedly connected to the upper frame of the door frame (1), and the two sides are slidably connected to the side frames of the door frame (1). The lower end of the flexible door body (2) is connected to the bottom beam (3). The multi-point lifting drive mechanism includes multiple winches (4) set above the door frame (1). Each winch (4) has a steel wire rope (5) wound on its drum. The steel wire ropes wound on the winches (4) on both sides are self-supporting. Extending downwards from the end, passing around the fixed pulley (6) at the corresponding position on the bottom beam (3), and then extending towards the side frame on the same side, and connecting to a spring-type pin structure (7) respectively. A pin plate (8) is provided at the lower end of each of the two side frames. After the spring-type pin structure (7) moves to the bottom, it is locked into the pin plate (8) under the action of the spring. The free ends of the wire ropes (5) wound on the remaining winches (4) are all fixedly connected to the corresponding positions on the bottom beam (3).

2. The multi-point lifting flexible door according to claim 1, characterized in that, The spring-type pin structure (7) includes a pin rod (9), a spring (10), and a connecting limiting plate (11). The connecting limiting plate (11) has upright plates on both sides. One end of the pin rod (9) is connected to the wire rope (5), and the other end passes through the two upright plates of the connecting limiting plate (11). The spring (10) is sleeved on the pin rod (9) between the two upright plates. One end of the spring (10) is connected to the upright plate of the connecting limiting plate (11) on the side closer to the wire rope (5), and the other end is connected to the pin rod (9). The pin retainer plate (8) has a hole for the pin rod (9) to pass through.

3. The multi-point lifting flexible door according to claim 1, characterized in that, Rotatable connecting rods (12) are provided on both sides of the drum of each winch (4). A crossbar (13) is connected between the two connecting rods (12). A proximity switch (14) is provided on the side of the connecting rod away from the drum at its original position. The proximity switch (14) is signal-connected to the multi-point lifting drive mechanism. A square tube (15) corresponding to the number of wire ropes (5) is connected on the bottom beam (3). Each wire rope (5) passes through the square tube (15) and connects to the bottom beam (3) or passes around the fixed pulley (6).

4. The multi-point lifting flexible door according to claim 1, characterized in that, The winches (4) are provided in four. The two winches (4) on both sides and their adjacent winches (4) share a drive motor (16) through a coupling. The two winches (4) in the middle are also connected through a coupling.

5. The multi-point lifting flexible door according to claim 1, characterized in that, The flexible door (2) comprises multiple flexible door units.

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