Electric dustproof sunshade awning

Abstract

The utility model discloses an electric dustproof sun-shading awning, which belongs to the technical field of dustproof sun-shading, and comprises a plurality of support columns arranged at the bottom in a foundation pit, and a driving mechanism for pulling a pulley vehicle to move is arranged outside each support column. Adsorption mechanisms are connected between the ends of the multiple pieces of dustproof cloth and the curtain. One-way mechanisms are connected to the two ends of each center shaft. According to the utility model, stable opening and closing and accurate start-stop control of the curtain are realized through the driving mechanism, and the flexible transmission characteristic of the steel wire rope is utilized to adapt to complex foundation pit layout and have an obstacle buffering function; a magnetic suction sealing tape between the curtain and the dustproof cloth is established through the adsorption mechanism, the dustproof cloth is automatically aligned to form a continuous dustproof barrier when unfolded, and quick release is realized through magnetic separation when folded; the one-way mechanism is matched with the torsional spring to maintain continuous meshing of the pawl and the ratchet wheel, accidental retraction of the dustproof cloth is prevented, and manual rapid unlocking is achieved through the design of the shifting rod.

Description

Technical Field

[0001] This utility model relates to the field of dustproof awning technology, and in particular to an electric dustproof and sunshade awning. Background Technology

[0002] In the construction environment of foundation pits, existing dustproof canopy systems generally adopt a frame structure composed of support columns and H-shaped steel rails, and the curtain is unfolded and retracted through a pulley mechanism. Although this technical solution can meet the basic sunshade and dustproof requirements, its structural characteristics inevitably lead to a transverse through gap between the curtain and the steel rail.

[0003] Specifically, the open slot design of the H-shaped steel rail provides a rolling track for the pulley, but also creates an unavoidable assembly gap between the rail flange and the edge of the curtain, and this gap is continuously distributed along the extension direction of the rail. When earthwork excavation, material transfer and other dust-generating operations are carried out inside the foundation pit, the high-pressure airflow carries particulate dust and forms a directional dispersion channel through this gap. Field measurement data shows that this structural defect can lead to a 30%-45% decrease in dust control efficiency. More importantly, under strong wind conditions, it can even cause the amount of dust leakage to increase exponentially, which not only violates the environmental protection requirements for construction, but also requires additional manpower for secondary dust suppression, significantly increasing the overall cost of the project. These structural and functional defects have become a key technical bottleneck restricting the widespread application of traditional canopy systems in construction scenarios with stringent environmental protection requirements.

[0004] Therefore, there is an urgent need to provide an electric dustproof and sunshade awning to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an electric dustproof and sunshade awning.

[0006] To solve the above-mentioned technical problems, the present invention provides an electric dustproof and sunshade canopy, comprising multiple support columns installed at the bottom of a foundation pit, two H-shaped steel rails installed between the multiple support columns, multiple pulleys sliding on the inner side of each of the two steel rails, a curtain connected between the multiple pulleys, a drive mechanism for pulling the pulleys to move installed on the outside of each of the multiple support columns, multiple first brackets fixedly connected to the top of each of the two steel rails, a central shaft rotatably connected inside each of the multiple first brackets, multiple turns of dustproof cloth wrapped around the outside of each of the multiple central shafts, and an adsorption mechanism connected between the ends of the multiple dustproof cloths and the curtain.

[0007] Both ends of the plurality of central shafts are connected to a one-way mechanism, and elastic mechanisms are respectively connected between the plurality of central shafts and the first bracket. Both ends of the plurality of central shafts are fixedly connected to a protective cover, and the elastic mechanism and the one-way mechanism are both located inside the protective cover.

[0008] The present invention is further configured such that: the driving mechanism includes a plurality of second brackets respectively fixedly connected to the outside of a plurality of support columns; each of the plurality of second brackets is equipped with a motor; each of the output ends of the plurality of motors is fixedly connected to a pulley; a steel wire rope is connected between every two pulleys; the two ends of the steel wire rope are respectively wound around the two pulleys; the plurality of steel wire ropes are respectively connected to a plurality of pulley carts; each of the plurality of pulley carts is rotatably connected to a plurality of pulleys that slide within a steel rail; a hook is installed on one side of each of the plurality of pulley carts; and the plurality of hooks are respectively connected to both sides of the curtain.

[0009] With the above technical solution, when the drive mechanism is working, the motor drives the steel wire rope to rotate in a cycle through the pulley. The steel wire rope pulls the pulley cart to move smoothly along the steel rail. The hooks installed on the pulley cart drive the two sides of the curtain to open or close synchronously. This transmission method utilizes the flexible transmission characteristics of the steel wire rope, which can adapt to the complex shape of the track layout of the foundation pit. By adjusting the motor speed, the opening and closing speed of the curtain can be precisely controlled. When encountering obstacles, the elastic deformation characteristics of the steel wire rope can also play a buffering and protective role, avoiding structural damage that may be caused by rigid transmission mechanisms.

[0010] The present invention is further configured such that: the adsorption mechanism includes a plurality of magnets respectively fixedly connected to the ends of a plurality of dustproof cloths, and a plurality of magnets are also fixedly connected to the top two sides of the curtain, and the magnets at the two locations attract each other.

[0011] Through the above technical solution, the adsorption mechanism uses the magnetic attraction between magnets to form a separable sealed connection between the end of the dustproof cloth and the edge of the curtain. When the dustproof cloth is unfolded, the magnets automatically adsorb and align with the magnets on the edge of the curtain, creating a continuous magnetic seal between the curtain and the dustproof cloth, effectively preventing dust from escaping through gaps. When the curtain needs to be retracted, only a pulling force slightly greater than the magnetic attraction force is needed to separate the two. This reusable magnetic connection method not only ensures the reliability of the seal but also simplifies the docking process between the dustproof cloth and the curtain.

[0012] The present invention is further configured such that: the one-way mechanism includes a plurality of one-way ratchet wheels respectively fixedly connected to both ends of a plurality of central shafts, the plurality of one-way ratchet wheels are respectively located in a plurality of protective covers, a support block is fixedly connected to each of the plurality of protective covers, a shaft II is fixedly connected to each of the plurality of support blocks, and a pawl that meshes with the plurality of one-way ratchet wheels is rotatably connected to the outside of each of the plurality of shaft IIs.

[0013] Through the above technical solution, the one-way mechanism ensures that the central shaft can only rotate in the direction of dust cloth release by engaging a one-way ratchet and a pawl. When the dust cloth is pulled out from outside the central shaft, the pawl remains engaged with the ratchet under the action of the torsion spring, preventing the dust cloth from retracting due to accidental pulling force. When the dust cloth needs to be retracted, the pawl is disengaged from the ratchet by moving the lever outside the protective cover, releasing the one-way restriction. This mechanical one-way limit design effectively avoids the dust cloth from unexpectedly winding up during use, improving the safety of equipment operation.

[0014] The present invention is further configured such that: a torsion spring is sleeved on the outside of each of the plurality of shafts 2, and the two ends of the torsion spring are respectively fixedly connected to the pawl and the shaft 2; one end of each of the plurality of pawls is fixedly connected to a plate 2; and a lever is fixedly connected inside each of the plurality of plates 2, with the lever extending out of the protective cover.

[0015] Through the above technical solution, the torsion spring provides continuous meshing pressure to the pawl, ensuring that the pawl always maintains effective contact with the ratchet teeth. When the equipment vibrates during operation, the elastic deformation capacity of the torsion spring can absorb the impact energy and maintain a stable meshing state between the pawl and the ratchet. The position of the pawl can be manually adjusted by the lever outside the protective cover. When it is necessary to release the one-way restriction, the operator only needs to move the lever to deflect the pawl, which can quickly unlock the ratchet mechanism. This design takes into account both the automatic holding function and the need for manual intervention.

[0016] The present invention is further configured such that: the elastic mechanism includes a plurality of spiral springs respectively sleeved on both ends of a plurality of central shafts, both ends of the spiral springs being fixedly connected to the first bracket and the central shaft respectively, and the plurality of spiral springs being located in a plurality of protective covers respectively.

[0017] Through the above technical solution, the function of the elastic mechanism is to drive the dustproof cloth to automatically reset. When the dustproof cloth unfolds outward from the central axis, the central axis drives the one-way ratchet to rotate. At the same time, the spiral spring stores rotational potential energy during the release of the dustproof cloth. When the dustproof cloth needs to be retracted before the curtain is retracted, the pawl lock of the one-way ratchet is released, and then the stored elastic potential energy drives the central axis to rotate in the opposite direction, so that the dustproof cloth is automatically wound and retracted. This self-rewinding function can realize the rapid retraction of the dustproof cloth without an additional power source, avoiding the risk of secondary pollution caused by the dustproof cloth scattering. At the same time, the constant force characteristic of the spiral spring ensures that the dustproof cloth maintains uniform winding tension throughout the entire recycling process, preventing the dustproof cloth from wrinkling or getting stuck due to tension fluctuations.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model achieves smooth opening and closing and precise start and stop control of the curtain through a drive mechanism, utilizes the flexible transmission characteristics of steel wire rope to adapt to complex pit layouts and has an obstacle buffer function; establishes a magnetic sealing strip between the curtain and the dustproof cloth through an adsorption mechanism, automatically aligns to form a continuous dustproof barrier when the dustproof cloth is unfolded, and achieves quick release through magnetic separation when retracted; maintains continuous engagement between the pawl and ratchet through a one-way mechanism in conjunction with a torsion spring, which not only prevents the dustproof cloth from accidentally retracting, but also allows for quick manual unlocking through a lever design;

[0020] 2. This utility model stores rotational potential energy when the dustproof cloth is unfolded through an elastic mechanism. After the unidirectional restriction is released, the central shaft is driven to reverse by a spiral spring, so as to realize the automatic and orderly recycling of the dustproof cloth. This avoids scattering and pollution while maintaining constant winding tension. The synergistic effect of each mechanism significantly improves the dustproof sealing effect and operation convenience of foundation pit construction. Attached Figure Description

[0021] Figure 1 This is a first-view structural diagram of the present invention;

[0022] Figure 2 This is a second-view sectional view of the present invention;

[0023] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 for Figure 2 A magnified view of a section at point B in the middle;

[0025] Figure 5 This is a third-view sectional view of the present invention;

[0026] Figure 6 for Figure 5 A magnified view of a section at point C;

[0027] Figure 7 This is a fourth-angle sectional view of the present invention;

[0028] Figure 8 This is a cross-sectional view of the elastic mechanism.

[0029] Figure 9 This is a fifth-angle sectional view of the present invention.

[0030] In the diagram: 1. Support column; 2. Rail; 3. Pulley cart; 4. Curtain; 5. Drive mechanism; 501. Second bracket; 502. Motor; 503. Pulley; 504. Wire rope; 505. Hook; 6. First bracket; 7. Central shaft; 8. Dustproof cloth; 9. Adsorption mechanism; 901. Magnet; 10. One-way mechanism; 1001. One-way ratchet; 1002. Support block; 1003. Shaft 2; 1004. Pawl; 1005. Torsion spring; 1006. Plate 2; 1007. Lever; 11. Elastic mechanism; 1101. Spiral spring; 12. Protective cover. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0032] Please see Figures 1-9 This embodiment of an electric dustproof and sunshade canopy includes multiple support columns 1 installed at the bottom of a foundation pit. Two H-shaped steel rails 2 are installed between the support columns 1. Multiple pulleys 3 slide along the inner sides of each of the two steel rails 2. A curtain 4 is connected between the pulleys 3. A drive mechanism 5 for moving the pulleys 3 is installed on the outside of each support column 1. The drive mechanism 5 includes multiple second brackets 501 fixedly connected to the outside of each support column 1. A motor 502 is installed inside each of the second brackets 501. A pulley 503 is fixedly connected to the output end of each motor 502. A steel wire rope 504 is connected between every two pulleys 503, with both ends of the steel wire rope 504 wound around the two pulleys 503. The multiple steel wire ropes 504 are connected to the multiple pulleys 3. Each of the multiple pulley carts 3 has multiple pulleys rotatably connected to it, which slide within the steel rail 2. Each of the multiple pulley carts 3 has a hook 505 installed on one side, and the hooks 505 are respectively connected to both sides of the curtain 4. When the drive mechanism 5 is working, the motor 502 drives the steel wire rope 504 to rotate cyclically through the pulley 503. The steel wire rope 504 pulls the pulley carts 3 to move smoothly along the rail 2. The hooks 505 installed on the pulley carts 3 drive the curtain 4 to open or close synchronously on both sides. This transmission method utilizes the flexible transmission characteristics of the steel wire rope 504, which can adapt to the complex shape of the track layout of the foundation pit. By adjusting the speed of the motor 502, the opening and closing speed of the curtain 4 can be precisely controlled. When encountering obstacles, the elastic deformation characteristics of the steel wire rope 504 can also play a buffering and protective role, avoiding structural damage that may be caused by the rigid transmission mechanism.

[0033] like Figures 2-3As shown, multiple first supports 6 are fixedly connected to the top of each of the two steel rails 2. A central shaft 7 is rotatably connected inside each of the multiple first supports 6. Multiple layers of dustproof cloth 8 are wrapped around the outside of each of the multiple central shafts 7. Adsorption mechanisms 9 are connected to the ends of the multiple dustproof cloths 8 and the curtain 4, respectively. The adsorption mechanism 9 includes multiple magnets 901 fixedly connected to the ends of the multiple dustproof cloths 8. Multiple magnets 901 are also fixedly connected to both sides of the top of the curtain 4, and the magnets 901 at both locations attract each other. The adsorption mechanism 9 uses the magnets 901 to... The magnetic attraction between the dustproof cloth 8 and the edge of the screen 4 forms a separable sealed connection. When the dustproof cloth 8 is unfolded, the magnet 901 automatically attracts and aligns with the magnet 901 on the edge of the screen 4, creating a continuous magnetic seal between the screen 4 and the dustproof cloth 8, effectively preventing dust from escaping through the gaps. When the screen 4 needs to be retracted, only a pulling force slightly greater than the magnetic attraction force is needed to separate the two. This reusable magnetic connection method not only ensures the reliability of the seal but also simplifies the docking process between the dustproof cloth 8 and the screen 4.

[0034] like Figures 5-8 As shown, both ends of multiple central shafts 7 are connected to one-way mechanisms 10. Each one-way mechanism 10 includes multiple one-way ratchet wheels 1001 fixedly connected to both ends of the multiple central shafts 7. The multiple one-way ratchet wheels 1001 are located within multiple protective covers 12. Support blocks 1002 are fixedly connected within each of the multiple protective covers 12. Shafts 1003 are fixedly connected within each of the multiple support blocks 1002. Pads 1004, which mesh with the multiple one-way ratchet wheels 1001, are rotatably connected to the outside of each of the multiple shafts 1003. The one-way mechanism 10 connects the one-way ratchet wheels 1001 with the pads. The engagement of pawl 1004 ensures that the central shaft 7 can only rotate in the release direction of the dustproof cloth 8. When the dustproof cloth 8 is pulled out from outside the central shaft 7, the pawl 1004 remains engaged with the ratchet 1001 under the action of the torsion spring 1005, preventing the dustproof cloth 8 from retracting due to accidental pulling force. When it is necessary to retract the dustproof cloth 8, the pawl 1004 is disengaged from the ratchet 1001 by moving the lever 1007 outside the protective cover 12, releasing the one-way restriction. This mechanical one-way limit design effectively avoids the dustproof cloth 8 from unexpectedly winding up during use, improving the safety of equipment operation.

[0035] like Figures 5-8As shown, torsion springs 1005 are fitted around the exterior of multiple shafts 1003. The two ends of the torsion springs 1005 are fixedly connected to pawls 1004 and shafts 1003, respectively. One end of each pawl 1004 is fixedly connected to a plate 1006. A lever 1007 is fixedly connected inside each plate 1006, extending beyond the protective cover 12. The torsion springs 1005 provide continuous meshing pressure to the pawls 1004, ensuring that the pawls 1004 always maintain contact with the teeth of the ratchet 1001. Maintaining effective contact, when the equipment vibrates during operation, the elastic deformation capacity of the torsion spring 1005 can absorb the impact energy and maintain the stable engagement state between the pawl 1004 and the ratchet 1001. The position of the pawl 1004 can be manually adjusted by the lever 1007 outside the protective cover 12. When it is necessary to release the one-way restriction, the operator only needs to move the lever 1007 to drive the pawl 1004 to deflect, which can quickly unlock the ratchet mechanism. This design takes into account both the automatic holding function and the need for manual intervention.

[0036] like Figures 5-7 As shown, multiple central shafts 7 are connected to the first support 6 by elastic mechanisms 11. Protective covers 12 are fixedly connected to both ends of the multiple central shafts 7. Both the elastic mechanisms 11 and the one-way mechanism 10 are located within the protective covers 12. Each elastic mechanism 11 includes multiple spiral springs 1101 respectively sleeved on both ends of the multiple central shafts 7. The two ends of each spiral spring 1101 are fixedly connected to the first support 6 and the central shafts 7, respectively. The multiple spiral springs 1101 are located within the multiple protective covers 12. The function of the elastic mechanism 11 is to automatically reset the dustproof cloth 8. When the dustproof cloth 8 unfolds outward from the central shaft 7, the central shaft 7 drives the one-way ratchet. As 1001 rotates, the spiral spring 1101 stores rotational potential energy during the release of the dust cloth 8. When the curtain 4 needs to be retracted before the dust cloth 8 is closed, the pawl 1004 of the one-way ratchet 1001 is released from lock. Then, the stored elastic potential energy drives the central shaft 7 to rotate in the opposite direction, so that the dust cloth 8 is automatically wound and retracted. This self-winding function can achieve the rapid retraction of the dust cloth 8 without an additional power source, avoiding the risk of secondary pollution caused by the dust cloth 8 scattering. At the same time, the constant force characteristic of the spiral spring 1101 ensures that the dust cloth 8 maintains uniform winding tension throughout the entire recycling process, preventing the dust cloth 8 from wrinkling or getting stuck due to tension fluctuations.

[0037] In use, this utility model uses two motors 502 to drive pulleys 503, which in turn drive steel wire rope 504 to rotate in a cycle. One motor 502 rotates forward to pull steel wire rope 504, causing the pulley cart 3 to move smoothly along the rail 2. The other motor 502 rotates in reverse to release steel wire rope 504. The hook 505 drives the curtain 4 to unfold or retract synchronously. After the curtain 4 is unfolded, the staff pulls the dustproof cloth 8 from the central shaft 7 to the required length. Then, the magnet 901 at its end attracts the magnet 901 at the edge of the curtain 4 to form a continuous magnetic sealing strip, completely sealing the dust escape channel between the curtain 4 and the rail 2. At this time, the one-way ratchet 1001 is in the ratchet 1... The engagement limit action of 004 ​​prevents the central shaft 7 from reversing, ensuring that the dustproof cloth 8 remains taut. When it is necessary to retract the dustproof cloth 8, the lever 1007 outside the protective cover 12 is first used to disengage the pawl 1004 from the one-way ratchet 1001, releasing the rotation restriction on the central shaft 7. Then, the spiral spring 1101 releases the stored rotational potential energy to drive the central shaft 7 to rotate in the opposite direction, causing the dustproof cloth 8 to automatically wind and retract. Finally, the two motors 502 run in opposite directions to drive the curtain 4 to retract. The entire process, through the synergistic effect of magnetic sealing, one-way limiting and elastic reset functions, not only achieves dynamic dustproof sealing of the construction area, but also ensures that the dustproof cloth 8 is automatically and neatly retracted when the curtain 4 is retracted.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electric dustproof and sunshade canopy, comprising a plurality of support columns (1) installed at the bottom of a foundation pit, two H-shaped steel rails (2) respectively installed between the plurality of support columns (1), a plurality of pulleys (3) sliding on the inner side of each of the two steel rails (2), and a curtain (4) connected between the plurality of pulleys (3), characterized in that: Each of the multiple support columns (1) is equipped with a drive mechanism (5) for pulling the pulley cart (3) to move. Each of the two rails (2) is fixedly connected to the top of multiple first brackets (6). Each of the multiple first brackets (6) is rotatably connected to a central shaft (7). Each of the multiple central shafts (7) is wrapped with multiple layers of dustproof cloth (8). Each of the ends of the multiple dustproof cloths (8) is connected to an adsorption mechanism (9) between itself and the curtain (4). Both ends of the plurality of central shafts (7) are connected to a one-way mechanism (10), and the plurality of central shafts (7) are respectively connected to the first bracket (6) by an elastic mechanism (11). Both ends of the plurality of central shafts (7) are fixedly connected to a protective cover (12), and the elastic mechanism (11) and the one-way mechanism (10) are both located inside the protective cover (12).

2. The electrically powered dustproof and sunshade awning according to claim 1, characterized in that: The drive mechanism (5) includes multiple second brackets (501) that are fixedly connected to the outside of multiple support columns (1). Each of the multiple second brackets (501) is equipped with a motor (502). The output ends of the multiple motors (502) are fixedly connected to pulleys (503). A steel wire rope (504) is connected between every two pulleys (503). The two ends of the steel wire rope (504) are respectively wound around the two pulleys (503). Multiple steel wire ropes (504) are connected to multiple pulley carts (3), and multiple pulleys that slide inside the rails (2) are rotatably connected to each of the multiple pulley carts (3). Each of the multiple pulley carts (3) has a hook (505) installed on one side, and the multiple hooks (505) are connected to both sides of the curtain (4).

3. The electrically powered dustproof and sunshade awning according to claim 1, characterized in that: The adsorption mechanism (9) includes multiple magnets (901) that are fixedly connected to the ends of multiple dustproof cloths (8). The top two sides of the curtain (4) are also fixedly connected to multiple magnets (901), and the magnets (901) at the two locations attract each other.

4. The electrically powered dustproof and sunshade awning according to claim 1, characterized in that: The one-way mechanism (10) includes multiple one-way ratchet wheels (1001) that are fixedly connected to both ends of multiple central shafts (7). The multiple one-way ratchet wheels (1001) are located inside multiple protective covers (12). Support blocks (1002) are fixedly connected inside the multiple protective covers (12). Shafts (1003) are fixedly connected inside the multiple support blocks (1002). Pawls (1004) that mesh with the multiple one-way ratchet wheels (1001) are rotatably connected to the outside of the multiple shafts (1003).

5. The electrically powered dustproof and sunshade awning according to claim 4, characterized in that: Each of the multiple shafts (1003) is fitted with a torsion spring (1005). The two ends of the torsion spring (1005) are fixedly connected to the pawl (1004) and the shaft (1003) respectively. One end of each of the multiple pawls (1004) is fixedly connected to a plate (1006). Each of the multiple plates (1006) is fixedly connected to a lever (1007). The lever (1007) extends out of the protective cover (12).

6. The electrically powered dustproof and sunshade awning according to claim 1, characterized in that: The elastic mechanism (11) includes multiple spiral springs (1101) respectively sleeved on both ends of multiple central shafts (7). The two ends of the spiral springs (1101) are fixedly connected to the first bracket (6) and the central shaft (7) respectively. The multiple spiral springs (1101) are located in multiple protective covers (12).

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