Flexible lifting door for large equipment facility
By designing flexible lifting doors, flexible door leaf and movable columns with curtain cross-bar structure, the problem of deformation of doors in large equipment facilities during wind blowing is solved, and the door's wind resistance is significantly improved.
Patent Information
- Application Number
- CN202421744714.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The ultra-long doors of large equipment facilities are prone to deformation when they are blowing wind. The main reason is that the door leaf is steel and cannot remove the wind force, and lacks column support, so it has weak wind resistance.
A flexible lifting door is designed, a flexible door leaf composed of a cord and multiple crossbars, and movable columns are set on both sides of the door opening. The first and second winches drive the movement of the door leaf and movable columns to ensure that there is no blockage in the door opening.
The wind force is effectively removed through the curtain crossbar structure of the flexible door leaf, reduced wind pressure, and transmitted wind force to the beam and ground groove through the movable column, significantly improving the wind resistance of the door.
Smart Images
Figure CN222909886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of doors and windows, in particular to a flexible lifting door used for large equipment and facilities. Background Art
[0002] According to usage requirements, the doors used in some large-scale equipment and facilities have extra-long widths. When the door is opened, there must be no obstructions in the door opening. For example, the hangar door of an aircraft hangar adopts a roller shutter structure. When the door is rolled up, it can be used for aircraft to enter and exit. However, such doors will be severely deformed when the wind blows. There are two main reasons for this: first, the door leaf is a rigid part and cannot unload the wind force, causing the door leaf to bear a lot of wind pressure; second, the door leaf lacks the support of the column and has weak wind resistance. Therefore, it is necessary to design a flexible lifting door with wind resistance. Utility Model Content
[0003] In order to overcome the shortcomings of the background technology, the utility model discloses a flexible lifting door used for large equipment and facilities, and the flexible lifting door adopts the following technical solutions:
[0004] A flexible lifting door used in large equipment and facilities comprises guide rails, cross beams, ground grooves, flexible door leaves, movable columns, a first winch and a second winch; wherein the guide rails are arranged on both sides of a door opening, the cross beams are arranged on the top of the door opening, and the ground grooves are arranged at the bottom of the door opening; the movable columns are hinged on the cross beams, and the flexible door leaves are at least two leaves, which are respectively slidably matched with the guide rails and the movable columns; the flexible door leaves are driven by the first winch, and the movable columns are driven by the second winch, when the door is closed, the movable columns rotate downward, and their ends fall into the ground groove, and then the flexible door leaves start to move downward; when the door is opened, the flexible door leaves move upward, and then the movable columns start to rotate upward and close.
[0005] To further improve the technical solution, the flexible door leaf is composed of a curtain and a plurality of cross bars, the two ends of the cross bars are respectively slidably matched with the guide rails and the movable columns, and the curtain is fixed between the cross bars.
[0006] To further improve the technical solution, the curtain fabric is a polyester fiber fabric with a PVC coating on the surface.
[0007] To further improve the technical solution, a cover plate is hinged on the floor trough, and when the door is closed, the cover plate is opened; when the door is opened, the cover plate is closed.
[0008] To further improve the technical solution, an infrared protection system is provided on both sides of the door opening. When the infrared protection system detects that someone or goods pass through the door opening, the door closing action is stopped.
[0009] To further improve the technical solution, an anti-fall device is installed between the flexible door leaf and the guide rail.
[0010] After implementing the above technical solution, compared with the background technology, the beneficial effects produced by the utility model are:
[0011] The flexible door leaf of the flexible lifting door adopts a curtain crossbar structure, which can effectively unload wind force and reduce wind pressure. More importantly, the flexible lifting door has movable columns, which transmit wind force to the crossbeam and the ground trough while ensuring passability, effectively improving the wind resistance of the flexible lifting door. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Attached Figure 1 What is shown is the structural schematic diagram of the flexible lifting door.
[0013] Attached Figure 2 The attached Figure 1 Schematic diagram of the local enlarged structure.
[0014] Attached Figure 3 Shown is a schematic diagram of the structure of the second winch when releasing the rope.
[0015] Attached Figure 4 Shown is a schematic diagram of the structure of the first winch when releasing the rope.
[0016] In the attached figure: 1. guide rail; 2. crossbeam; 3. ground trough; 4. flexible door leaf; 5. short column; 6. movable column; 7. first winch; 8. second winch; 9. cover plate; 10. anti-fall device. DETAILED DESCRIPTION
[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. It should be noted that in the description of the present invention, the terms "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0018] Attached Figure 1The flexible lifting door shown is a large equipment facility, which includes a guide rail 1, a crossbeam 2, a ground trough 3, a flexible door leaf 4, a movable column 6, a first hoist 7 and a second hoist 8. The structure and function thereof are described in detail below.
[0019] Attached Figure 1 Medium and large equipment facilities are steel structures with a door opening width of 31.8 meters and a height of 8.85 meters. The flexible lifting door has three door leaves, all of which are in a fully open state. Among them, the width of the middle door leaf is greater than the width of the door leaves on both sides.
[0020] By the attached Figure 1 It can be seen that a pair of guide rails 1 are arranged on both sides of the door opening, a crossbeam 2 is arranged at the top of the door opening, and a pair of ground grooves 3 are arranged at the bottom of the door opening. A cover plate 9 is hinged on the ground groove 3. The cover plate 9 opens when the door is closed and closes when the door is opened. Three sets of first winches 7 and two sets of second winches 8 are installed on the crossbeam 2.
[0021] See attached Figure 2 , attached Figure 2 The attached Figure 1 The first winch 7 is a double-rope structure, and the two steel wire ropes are connected to the pulley block respectively. The pulley block consists of a fixed pulley and a movable pulley, the fixed pulley is installed on the crossbeam 2, and the movable pulley is installed at the lower part of the flexible door leaf 4. When the first winch 7 releases the rope, the flexible door leaf 4 moves downward; when the first winch 7 collects the rope, the flexible door leaf 4 moves upward. In order to control the moving distance, travel switches are set at the upper and lower dead points of the flexible door leaf 4.
[0022] A pair of short columns 5 are also fixed at the lower part of the crossbeam 2. A movable column 6 is hinged at the lower end of the short column 5 through a hinge shaft. Both the short column 5 and the movable column 6 have a slide groove structure that slides with the door leaf. The second hoist 8 is connected to the movable column 6 through a wire rope. When the second hoist 8 releases the rope, the movable column 6 rotates downward until it is in a vertical state; when the second hoist 8 retracts the rope, the movable column 6 rotates upward until it is in a horizontal state.
[0023] The flexible door leaf 4 is composed of a curtain and a plurality of metal cross bars, and the curtain is fixed between the cross bars. A guide with a pulley structure is provided at both ends of the cross bar, and the guide can cooperate with the slide groove structure on the guide rail 1 and the movable column 6 to ensure the smoothness of the up and down movement of the flexible door leaf 4. An EPDM rubber sealing strip is provided at the bottom of the flexible door leaf 4, and the hardness of the EPDM rubber is 55±5 degrees Shore hardness. When closing the door, the EPDM rubber is used to seal the gap between the flexible door leaf 4 and the floor.
[0024] In this embodiment, the curtain fabric is a polyester fiber fabric with a PVC coating on the surface. The polyester fiber curtain fabric has the properties of anti-corrosion, anti-mildew and anti-ultraviolet, and can be used in a volatile benzene environment. The combustion performance of the polyester fiber curtain fabric is B1 grade, the tensile strength is: warp ≥2700N / 5CM, weft ≥2500N / 5CM, and the tear strength is: warp ≥370N / 5cm, weft ≥320N / 5cm.
[0025] Compared with a steel rolling door, the flexible door leaf 4 is flexible and can effectively remove wind force and reduce wind pressure.
[0026] Refer to the attached Figure 3 , attached Figure 3 The structure diagram of the second hoist 8 when the rope is released is shown. The flexible lifting door is provided with a control box, which has a door opening button, a door closing button and a stop button. When closing the door, first open the cover plates 9 of the pair of ground grooves 3, and then the second hoist 8 releases the rope to make the movable column 6 rotate downward until the lower end of the movable column 6 falls into the ground groove 3. At this time, the movable column 6 is in a vertical state and is in line with the short column 5, and the slide groove on the short column 5 is connected with the slide groove on the movable column 6.
[0027] Refer to the attached Figure 4 , attached Figure 4 The diagram shows the structure when the first hoist 7 is releasing the rope. Since the chute on the short column 5 is connected with the chute on the movable column 6 to form a complete chute, the flexible door leaf 4 can move downward along the chute by releasing the rope of the first hoist 7 until the flexible lifting door is completely closed.
[0028] By the attached Figure 4 It can be seen that due to the restriction of the lower end of the movable column 6 by the ground groove 3, the movable column 6 becomes a rigid support, thereby providing strong support for the three door leaves. When strong winds blow, the movable column 6 can transfer wind force to the crossbeam 2 and the ground groove 3, thereby improving the wind resistance of the flexible lifting door.
[0029] The order of opening the door is opposite to that of closing the door. First, the flexible door leaf 4 is moved upward by the first winch 7, and then the movable column 6 is retracted by the second winch 8, and finally the cover plate 9 on the floor trough 3 is closed. At this time, there is no obstruction in the door opening, and large equipment can be entered and exited.
[0030] Again refer to the attached Figure 2 To further improve the technical solution, an anti-fall device 10 is installed at the bottom of the flexible door leaf 4, where it is connected to the guide rail 1. The anti-fall device 10 is a prior art. When the wire rope breaks accidentally, the anti-fall device 10 can clamp the flexible door leaf 4 on the guide rail 1 to prevent the flexible door leaf 4 from falling and injuring people.
[0031] In addition, infrared protection systems are installed on both sides of the door opening. When the infrared protection system detects that someone or goods pass through the door opening, the infrared protection system stops closing the door to ensure safety.
[0032] As can be seen from the above, the flexible door leaf 4 of the flexible lifting door adopts a curtain crossbar structure, which can effectively remove wind force and reduce wind pressure. More importantly, the flexible lifting door has a movable column 6, which transmits wind force to the crossbeam 2 and the ground groove 3 while ensuring passability, effectively improving the wind resistance of the flexible lifting door.
[0033] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the protection scope of the present invention is defined by the attached claims and their equivalents.
Claims
1. A flexible lifting door used in large equipment and facilities, characterized by: It includes guide rails, cross beams, ground grooves, flexible door leaves, movable columns, a first winch and a second winch; wherein, the guide rails are arranged on both sides of the door opening, the cross beams are arranged on the top of the door opening, and the ground grooves are arranged at the bottom of the door opening; the movable columns are hinged on the cross beams, and the flexible door leaves are at least two, which are slidably matched with the guide rails and the movable columns respectively; the flexible door leaves are driven by the first winch, and the movable columns are driven by the second winch. When the door is closed, the movable columns rotate downward, and their ends fall into the ground groove, and then the flexible door leaves start to move downward; when the door is opened, the flexible door leaves move upward, and then the movable columns start to rotate upward and close.
2. A flexible lifting door for large equipment and facilities as claimed in claim 1, characterized in that: The flexible door leaf is composed of a curtain and a plurality of cross bars, the two ends of the cross bars are respectively slidably matched with the guide rail and the movable column, and the curtain is fixed between the cross bars.
3. A flexible lifting door for large equipment and facilities as claimed in claim 2, characterized in that: The curtain fabric is a polyester fiber fabric with a PVC coating on the surface.
4. The flexible lifting door for large equipment and facilities as claimed in claim 1, characterized in that: A cover plate is hinged on the floor trough. When the door is closed, the cover plate is opened; when the door is opened, the cover plate is closed.
5. The flexible lifting door for large equipment and facilities as claimed in claim 1, characterized in that: Infrared protection systems are installed on both sides of the door opening. When the infrared protection system detects that someone or goods pass through the door opening, it stops closing the door.
6. The flexible lifting door for large equipment and facilities as claimed in claim 1, characterized in that: An anti-falling device is installed between the flexible door leaf and the guide rail.