Lifting Flexible Windbreak Door
By designing a lifting flexible windbreak door, and utilizing a combination structure of canvas and crossbeams, the problems of space occupation, damage, dust generation, and material spillage of existing windbreak door devices are solved, achieving efficient dust suppression and improved stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU GONGLI HEAVY MACHINERY
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-31
AI Technical Summary
The existing windbreak devices of ship unloaders have problems such as large space occupation, easy damage, poor safety, dust generation and material spillage caused by reflected wind, which make it difficult to meet the development needs of environmental protection and high efficiency.
The system adopts a lifting flexible windbreak door, which uses a combination structure of brackets, pulley blocks, crossbeams and flexible canvas. The lifting and lowering of the canvas is achieved by using a winch to drive the wire rope. The canvas is tied to the crossbeam in sections. When the canvas is impacted by the airflow, it deforms slightly to absorb energy. When the grab bucket moves in and out quickly, the canvas fluctuations are restrained by the crossbeam in sections.
It effectively reduces reflected wind speed, minimizes dust, prevents material spillage, improves the environmental performance and space utilization efficiency of the windbreak, and enhances the stability and safety of the equipment.
Smart Images
Figure CN224577645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of windproof and dust suppression technology for unloading systems of ship unloaders, and in particular to a lifting flexible windbreak door. Background Technology
[0002] With the development of port bulk cargo handling technology, bridge grab unloaders have emerged. These machines feature operation on rails, passage of vehicles under the gantry, and material transport to the storage yard via hoppers and belt conveyors after grabbing. They are suitable for unloading bulk cargo at medium and small ports or coal at power plant docks.
[0003] The hopper windbreak doors of bridge-type grab unloaders must meet the following requirements: closed during operation to reduce windblown dust; opened when hoisting cleaning machines to facilitate passage and lower the grab bucket height; and opened when not in operation to reduce the windward area, reduce wind load, and improve stability. To meet these requirements, related technologies mainly employ several methods, including rigid lifting windbreak doors, rigid swing doors, tilting lifting doors, and flexible roller shutter doors.
[0004] However, the above-mentioned methods or related devices have the following problems:
[0005] Tilting-type lifting doors have been gradually phased out due to their large space requirements, susceptibility to collision damage, and poor safety.
[0006] Rigid lifting doors and rigid swing doors are heavy and have a large windward area. When working, the reflected wind is more likely to form a strong airflow that stirs up dust, which has a great impact on dust suppression and environmental protection, and is difficult to adapt to the development concept of modern port environmental protection and efficiency.
[0007] Flexible roller shutters, on the other hand, experience violent fluctuations when the grab bucket moves rapidly in and out of the hopper, which can easily lead to air leakage and material spillage. Their environmental performance is also poor, and these drawbacks have gradually led to their elimination from the market. Utility Model Content
[0008] In response to the shortcomings of the existing production technology, the applicant provides a lifting flexible windbreak door, which effectively reduces reflected wind and dust during operation, while also preventing large fluctuations when the grab bucket quickly enters and exits the hopper, thus avoiding material spillage.
[0009] The technical solution adopted in this utility model is as follows:
[0010] A retractable flexible windbreak door includes:
[0011] A bracket symmetrically fixed on both sides of the windbreak wall of the hopper, the bracket being provided with a vertical guide groove;
[0012] The first and second pulley groups are respectively installed at the top of the support, and the third pulley group is located at the bottom of one side of the support;
[0013] The first, second, and third crossbeams are distributed vertically between the two side supports in sequence.
[0014] A flexible canvas covering the crossbeams, the canvas being tied to each crossbeam with hemp rope;
[0015] Rigging connecting the first, second, and third crossbeams;
[0016] The drive mechanism includes a winch and a traction wire rope, which passes through a first pulley block, a second pulley block and a third pulley block in sequence before connecting to a first crossbeam;
[0017] The first and second crossbeams slide in the guide grooves of the bracket via guide blocks at both ends, while the third crossbeam is fixed to the bottom of the bracket.
[0018] When the winch drives the traction wire rope, it causes the first crossbeam to rise and fall along the guide groove, causing the canvas to unfold to form a windproof surface or be stacked at the bottom.
[0019] As a further improvement to the above technical solution:
[0020] In one embodiment, the bracket is fixed to the hopper windbreak wall by bolts.
[0021] In one embodiment, the guide block and the support guide groove form a sliding pair to limit the horizontal displacement of the crossbeam.
[0022] In one embodiment, the binding points of the canvas and each crossbeam are equidistantly distributed along the length of the crossbeam.
[0023] In one embodiment, the rigging is vertically connected to adjacent crossbeams, enabling the three crossbeams to rise and fall synchronously.
[0024] In one embodiment, the transmission path of the traction wire rope is sequentially a winch, a third pulley block, a first pulley block, a second pulley block, and a first crossbeam.
[0025] In one embodiment, a position sensor is also included, located at the lowest point when the door is lowered and the highest point when the door is raised, to detect the position of the crossbeam.
[0026] In one embodiment, when the first crossbeam is raised to the highest point of the door opening, the canvas covers the middle area of the supports on both sides; when the first crossbeam is lowered to the lowest point of the door opening, the canvas forms a stacked state based on its flexible characteristics.
[0027] In one embodiment, the third crossbeam is bolted to the flange at the bottom of the bracket.
[0028] The beneficial effects of this utility model are as follows:
[0029] This utility model has a compact structure. By binding the canvas in sections to three crossbeams, and flexibly connecting the crossbeams with hemp ropes, the canvas deforms slightly when exposed to wind to absorb the energy of the airflow. Compared with rigid doors, it reduces the wind speed reflected and reduces dust from the source. At the same time, when the grab bucket moves in and out quickly, the canvas wavering is constrained by the crossbeams in sections, avoiding violent shaking of the whole and solving the problem of material spillage in traditional roller shutter doors.
[0030] This utility model also has the following advantages:
[0031] The first and second crossbeams of this utility model are equipped with guide blocks at both ends that are embedded in the vertical guide groove of the bracket, and the third crossbeam is fixed to the bottom flange of the bracket as a stacking base; the guide groove can precisely limit the displacement of the crossbeams and prevent the door from shaking. Attached Figure Description
[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0033] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective.
[0034] Figure 3 This is a schematic diagram of the support structure of this utility model.
[0035] Figure 4 This is a schematic diagram of the first crossbeam structure of this utility model.
[0036] Figure 5 This is a schematic diagram of the second crossbeam structure of this utility model.
[0037] Figure 6 This is a schematic diagram of the third crossbeam structure of this utility model.
[0038] Figure 7 This is a schematic diagram of the canvas structure of this utility model.
[0039] Figure 8 This is a schematic diagram of the steel wire rope sling of this utility model.
[0040] The components include: 1. Hopper windbreak wall; 2. Support frame; 3. First pulley block; 4. First crossbeam; 5. Second crossbeam; 6. Third crossbeam; 7. Canvas; 8. Second pulley block; 9. Rigging; 10. Traction wire rope; 11. Winch; 12. Third pulley block; 13. Hemp rope; 14. Position sensor; 15. Lowest point of gate lowering; 16. Highest point of gate raising. Detailed Implementation
[0041] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0042] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0044] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.
[0045] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.
[0046] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.
[0047] like Figures 1 to 8 The accompanying drawing shows a structural schematic diagram of a lifting flexible windbreak door according to an embodiment of the present invention; for ease of description, the drawing only shows the structure related to the embodiment of the present invention.
[0048] This application provides a lifting flexible windbreak door, with the brackets 2 on both sides vertically fixed to the windbreak wall 1 of the hopper by bolts, and the brackets 2 having vertical guide grooves on the inner side.
[0049] A first pulley group 3 and a second pulley group 8 are installed on the top of the bracket 2, and a third pulley group 12 is installed at the bottom of the bracket 2 on one side.
[0050] In some embodiments, three horizontal beams distributed in the vertical direction are added, wherein the first horizontal beam 4 and the second horizontal beam 5 are inserted into the vertical guide groove of the bracket 2 by guide blocks to form a sliding pair, and the third horizontal beam 6 is fixed to the flange at the bottom of the bracket 2 by bolts to serve as a stacking base.
[0051] Furthermore, the flexible canvas 7 covers the three crossbeams and is connected by hemp rope 13 at equal intervals along the length of the crossbeams;
[0052] Furthermore, rigging 9 is vertically connected to the first crossbeam 4, the second crossbeam 5, and the third crossbeam 6.
[0053] In some embodiments, the drive mechanism includes a winch 11 and a traction wire rope 10; wherein, the transmission path of the traction wire rope 10 is: output end of winch 11 → third pulley block 12 → first pulley block 3 → second pulley block 8 → first crossbeam 4.
[0054] In some embodiments, a position sensor 14 is also provided, which is respectively located at the lowest point 15 when the door is lowered and the highest point 16 when the door is raised, to detect the lifting position of the first crossbeam 4 in real time.
[0055] In practical application, the working method of this utility model is as follows:
[0056] Windproof state: The winch 11 tightens the traction steel wire rope 10, driving the first crossbeam 4 to rise along the guide groove to the highest point 16 of the gate lift. The rigging 9 pulls the second crossbeam 5 to rise synchronously. The canvas 7 is fully unfolded to cover the middle area of the two side supports 2 to form a closed windproof surface.
[0057] Storage state: The winch 11 releases the traction steel wire rope 10, the first crossbeam 4 descends to the lowest point 15 of the door through the guide groove, and the second crossbeam 5 descends simultaneously; the canvas 7 is stacked based on its flexible characteristics, which greatly reduces wind load and space occupation.
[0058] In summary, the structure of this utility model is reasonable. When the airflow impacts, the canvas 7 deforms slightly to absorb energy, which reduces the reflected wind speed compared to a rigid door and suppresses dust. At the same time, the canvas 7 is constrained in segments by the first crossbeam 4, the second crossbeam 5 and the third crossbeam 6, which limits the amplitude of the canvas 7 when the grab bucket moves in and out at high speed, thus avoiding the problem of material spillage in traditional roller shutter doors.
[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0060] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A vertically movable flexible damper, characterized in that include: Supports (2) are symmetrically fixed on both sides of the hopper windbreak wall (1), and the supports (2) are provided with vertical guide grooves; The first pulley group (3) and the second pulley group (8) are respectively set on the top of the bracket (2), and the third pulley group (12) is located at the bottom of the bracket (2) on one side; The first crossbeam (4), the second crossbeam (5), and the third crossbeam (6) are distributed vertically between the two side supports (2); A flexible canvas (7) is covered on the crossbeams, and the canvas (7) is tied to each crossbeam by hemp rope (13); Rigging (9) that connects the first crossbeam (4), the second crossbeam (5), and the third crossbeam (6); The drive mechanism includes a winch (11) and a traction wire rope (10), which passes through the first pulley block (3), the second pulley block (8) and the third pulley block (12) in sequence and then connects to the first crossbeam (4); Among them, the first crossbeam (4) and the second crossbeam (5) slide in the guide groove of the bracket (2) through guide blocks at both ends, and the third crossbeam (6) is fixed to the bottom of the bracket (2); When the winch (11) drives the traction wire rope (10), it causes the first crossbeam (4) to rise and fall along the guide groove, so that the canvas (7) unfolds to form a windproof surface or is stacked at the bottom.
2. The lift flexible damper according to claim 1, wherein The bracket (2) is fixed to the hopper windbreak wall (1) by bolts.
3. The lift flexible damper of claim 1, wherein, The guide block and the guide groove of the bracket (2) cooperate to form a sliding pair.
4. The lift flexible damper of claim 1, wherein, The binding points of the canvas (7) and each crossbeam are equidistantly distributed along the length of the crossbeam.
5. The lift flexible damper of claim 1, wherein, The rigging (9) is vertically connected to the adjacent crossbeams, so that the three crossbeams can be raised and lowered synchronously.
6. The lift flexible damper of claim 1, wherein, The transmission path of the traction wire rope (10) is sequentially the winch (11), the third pulley block (12), the first pulley block (3), the second pulley block (8), and the first crossbeam (4).
7. The lifting flexible windbreak door according to claim 1, characterized in that, It also includes position sensors (14), which are located at the lowest point of the door lowering (15) and the highest point of the door rising (16), respectively, for detecting the position of the crossbeam.
8. The lifting flexible windbreak door according to claim 1, characterized in that, When the first crossbeam (4) rises to the highest point of the door (16), the canvas (7) covers the middle area of the supports (2) on both sides; when the first crossbeam (4) falls to the lowest point of the door (15), the canvas (7) forms a stacked state based on its flexible characteristics.
9. The lifting flexible windbreak door according to claim 1, characterized in that, The third crossbeam (6) is fixed to the flange at the bottom of the bracket (2) by bolts.