Elevator door machine with dustproof structure
By introducing components such as brushes, fan blades, and filters into the elevator door operator, the problem of dust and debris affecting the elevator door operator in complex environments has been solved, achieving efficient dust prevention, extending component life, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YAHAN MECHANICAL & ELECTRICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-07
AI Technical Summary
Existing elevator door operators are easily affected by dust and debris because they are in the relatively enclosed and complex environment of the elevator shaft for a long time, which leads to wear and tear on the parts, shortens their service life, and increases maintenance and replacement costs.
An elevator door operator with a dustproof structure was designed, including components such as brushes, fan blades, and filters. The brushes clean dust, the fan blades generate airflow and block debris through the filters, and the scraper removes dust from the filters, thus achieving a highly efficient dustproof function.
It effectively prevents dust and debris from entering the elevator door operator, extending the service life of components, reducing maintenance and replacement costs, and improving operational stability.
Smart Images
Figure CN224467314U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevator door operator technology, specifically an elevator door operator with a dustproof structure. Background Technology
[0002] An elevator door operator is a mechanism responsible for opening and closing the elevator hall and car doors. When it receives an elevator door opening or closing signal, the elevator door operator controls the door opening motor through its own control system, converting the torque generated by the motor into a force in a specific direction, thereby closing or opening the door.
[0003] The elevator door operator with a dustproof structure is mainly composed of an upper sill, motor, active synchronous pulley, synchronous belt, driven synchronous pulley, door hanging plate, dust removal device and protective cover. Its working principle is that the motor drives the synchronous pulley, which drives the door hanging plate to move and realize the opening and closing of the door. At the same time, the dust removal device and protective cover prevent dust from affecting the operation of the door operator.
[0004] Existing elevator door operators are easily affected by dust and debris because they are in the relatively enclosed and complex environment of the elevator shaft for a long time. Dust and debris may cause wear and tear on the components of the elevator door operator, shorten the service life of the components, and increase maintenance and replacement costs. Therefore, an elevator door operator with a dustproof structure is proposed to address the above problems. Utility Model Content
[0005] To overcome the shortcomings of existing technologies and address the problem mentioned in the background art that existing elevator door operators are easily affected by dust and debris due to being in the relatively enclosed and complex environment of the elevator shaft for a long time, which may cause wear and tear on the components of the elevator door operator, shorten the service life of the components, and increase maintenance and replacement costs, this utility model proposes an elevator door operator with a dustproof structure.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An elevator door operator with a dustproof structure, as described in this utility model, includes an upper sill. A rectangular mounting hole is opened at the bottom of one side of the upper sill. A fixing block is set above the center of the rectangular mounting hole. A through hole is opened inside the fixing block. Sliding grooves are opened on both sides of the through hole, and brushes are slidably installed in the sliding grooves. Hanging plates are set on both sides of the fixing block. The hanging plates are slidably installed in the rectangular mounting hole. Both ends of the hanging plates penetrate the upper sill, and the lower end is fixedly connected to an elevator car door. The brushes are respectively fixedly installed on the outside of opposite sides of the two hanging plates. A dustproof box is fixedly installed on the upper part of the upper sill. A door controller is fixedly installed on the top of the dustproof box. An installation groove is opened on the top of one side of the dustproof box, and a sealing plate is slidably installed in the installation groove. A fixing block is set on one side. The frame is fixedly installed on the upper part of the upper sill. Air inlets are provided at the bottom of both ends of the upper sill. Below each air inlet, a bellows is fixedly installed at the bottom of the upper sill. A rotating shaft is rotatably installed inside each air inlet via a bracket. Fan blades are fixedly installed at the upper end of the rotating shaft. A first bevel gear is rotatably installed inside the upper end of the bellows at the lower end of the rotating shaft. Support plates are fixedly installed on both sides of the first bevel gear at the top of the bellows. A connecting shaft is rotatably installed between the lower ends of the support plates. A drive motor is fixedly installed at one end of the bellows. The rotating shaft of the drive motor is fixedly connected to one end of the connecting shaft. An opening is provided at the other end of the bellows, and a filter screen is fixedly installed inside the opening. By setting up dustproof structures such as brushes, fan blades, and filters, dust and debris are effectively blocked from entering the elevator door operator, achieving the dustproof function of the elevator door operator.
[0007] Preferably, a fixed plate is fixedly installed on the top side of the dustproof box, with drive shafts rotatably installed at both ends of the fixed plate. One end of the drive shaft passes through the fixed plate and is fixedly installed with a rotating wheel. The rotating wheels rotate in cooperation with each other via a transmission belt. A door operator motor is fixedly installed on the other side of one end of the fixed plate. The rotating shaft of the door operator motor is fixedly connected to one end of the drive shaft. A transmission arm is fixedly installed on the upper part of one side and the lower part of the other side of the transmission belt. The transmission arm is fixedly connected to two corresponding hanging plates. By setting up a fixed plate, drive shaft, rotating wheel, transmission belt, door operator motor and transmission arm in the dustproof box, the door operator motor drives the transmission belt to rotate, thereby driving the two hanging plates to move synchronously, realizing the function of smooth opening and closing of the elevator car door.
[0008] Preferably, a fixed shaft is fixedly installed on the upper end of the side of the hanging plate near the fixed frame, a guide wheel is rotatably installed on the fixed shaft, and a guide rod is provided at the bottom of the guide wheel, with both ends fixedly installed on the inner wall of the dustproof box. By setting a fixed shaft and a guide wheel on the upper end of the side of the hanging plate near the fixed frame, and setting a guide rod at the bottom of the guide wheel, the function of guiding the movement of the hanging plate is realized.
[0009] Preferably, the mounting plate has symmetrical slots on opposite sides, and the slots are L-shaped. An electric cylinder is fixedly installed at the top center of the fixed frame. Sliding holes are opened on both sides of the top of the fixed frame, and sliding rods are slidably installed in the sliding holes. A slider is slidably installed in the fixed frame. The lead screw of the electric cylinder is rotatably installed on the top of the slider. The lower ends of the sliding rods are fixedly installed on the top of both sides of the slider. Locking rods are fixedly installed on both ends of the slider near the mounting plate. The locking rods are slidably set in the slots on opposite sides of the mounting plate. By opening L-shaped slots on opposite sides of the mounting plate and setting the structure of electric cylinder, sliding holes, sliding rods, sliders and locking rods on the fixed frame, the sliding of the slider driven by the electric cylinder is realized, which in turn drives the locking rods to slide in the slots, thereby realizing the locking and unlocking functions of the mounting plate.
[0010] Preferably, a second bevel gear is fixedly mounted on the connecting shaft below one side of the first bevel gear. The first bevel gear and the second bevel gear are perpendicular to each other and mesh with each other. One end of the connecting shaft passes through the filter screen and a scraper is fixedly mounted thereon. The scraper is rotatably positioned inside the opening. By setting the second bevel gear below one side of the first bevel gear and mounting the scraper after passing through the filter screen at one end of the connecting shaft, the function of driving the connecting shaft to rotate by the drive motor is realized, thereby driving the scraper to rotate inside the opening of the filter screen.
[0011] Preferably, the drive motor, door operator motor, and electric cylinder are all linearly connected to the door controller via power lines, and the door controller is used to control their start and stop. By setting the door controller, the door controller can accurately control the start and stop and operating parameters of each motor according to the elevator's operating status and instructions, thereby improving the automation level and operating efficiency of the elevator door operator.
[0012] The advantages of this utility model are:
[0013] 1. This utility model, during elevator operation, utilizes a sliding mechanism where the sliding of the mounting plate causes a brush to slide within a groove. The brush bristles clean dust and debris that may adhere to the edges of the rectangular mounting holes and the surface of the upper sill. The drive motor rotates the connecting shaft, which in turn rotates the second bevel gear, which in turn rotates the first bevel gear, which in turn rotates the rotating shaft. The rotating shaft then rotates the fan blades, creating airflow that allows outside air to enter the elevator door operator through the air inlet. During this airflow, the filter screen blocks dust and debris, while the connecting shaft drives a scraper to rotate within the opening, removing dust from the filter screen and preventing clogging. This structural design achieves highly efficient dust prevention, solving the problem that existing elevator door operators, operating in the relatively enclosed and complex environment of the elevator shaft, are susceptible to dust and debris, which can cause wear and tear on components, shorten their lifespan, and increase maintenance and replacement costs. This design improves the operational stability and lifespan of the elevator door operator while reducing maintenance frequency and costs. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of the elevator door operator;
[0016] Figure 2 This is a schematic diagram of the internal structure of one side of the elevator door operator;
[0017] Figure 3 This is a schematic diagram of the structure on the other side of the elevator door operator's interior.
[0018] Figure 4 This is a structural diagram;
[0019] Figure 5 Schematic diagram of elevator door locking device
[0020] Figure 6 This is a schematic diagram of the heat dissipation device.
[0021] In the diagram: 1. Upper sill; 2. Dustproof box; 3. Sealing plate; 4. Door controller; 5. Fixing plate; 6. Drive shaft; 7. Rotating wheel; 8. Transmission belt; 9. Door motor; 10. Hanging plate; 11. Transmission arm; 12. Elevator car door; 13. Guide rod; 14. Fixing shaft; 15. Guide wheel; 16. Fixing frame; 17. Sliding rod; 18. Sliding block; 19. Locking rod; 20. Electric cylinder; 21. Fixing block; 22. Brush; 23. Air box; 24. Rotating shaft; 25. Fan blade; 26. First bevel gear; 27. Support plate; 28. Connecting shaft; 29. Second bevel gear; 30. Drive motor; 31. Filter screen; 32. Scraper. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] Please see Figure 1-6As shown, an elevator door operator with a dustproof structure includes an upper sill 1. A rectangular mounting hole is formed on the bottom of one side of the upper sill 1. A fixing block 21 is positioned above the center of the rectangular mounting hole. A through hole is formed inside the fixing block 21, and sliding grooves are formed on both sides of the through hole. Brushes 22 are slidably installed in the sliding grooves. Hanging plates 10 are provided on both sides of the fixing block 21, and the hanging plates 10 are slidably installed in the rectangular mounting hole. Both ends of the hanging plates 10 penetrate the upper sill 1, and the lower end is fixedly connected to an elevator car door 12. The brushes 22 are respectively fixedly installed on the outside of opposite sides of the two hanging plates 10. A dustproof box 2 is fixedly installed on the upper part of the upper sill 1. A door controller 4 is fixedly installed on the top of the dustproof box 2. An installation groove is formed on the top of one side of the dustproof box 2, and a sealing plate 3 is slidably installed in the installation groove. The fixing block 21... A fixed frame 16 is provided on one side and fixedly installed on the upper part of the upper sill 1. Air inlets are provided at the bottom of both ends of the upper sill 1. A wind box 23 is provided below the air inlet and fixedly installed at the bottom of the upper sill 1. A rotating shaft 24 is rotatably installed in the air inlet through a bracket. A fan blade 25 is fixedly installed on the upper end of the rotating shaft 24. The lower end of the rotating shaft 24 is rotatably set inside the upper end of the wind box 23 and fixedly installed with a first bevel gear 26. Support plates 27 are provided on both sides of the first bevel gear 26 and fixedly installed on the top of the wind box 23. A connecting shaft 28 is rotatably installed between the lower ends of the support plates 27. A drive motor 30 is fixedly installed in one end of the wind box 23. The rotating shaft of the drive motor 30 is fixedly connected to one end of the connecting shaft 28. An opening is provided in the other end of the wind box 23, and a filter screen 31 is fixedly installed in the opening.During operation, under normal circumstances, the sealing plate 3 is in the closed mounting slot state, isolating the interior of the dustproof box 2 from the outside. When it is necessary to open or close the elevator car door 12, the door controller 4 controls the door motor 9 to start. Its rotating shaft drives the drive shaft 6 and the rotating wheel 7 to rotate, and at the same time drives the transmission belt 8 to rotate. As the transmission belt 8 rotates, the transmission arm 11 drives the hanging plate 10 to slide within the rectangular mounting hole, thereby realizing the opening or closing action of the elevator car door 12. When it is necessary to stop the car door movement, the door controller 4 controls the door... When the motor 9 stops rotating, the transmission belt 8 stops moving, and the hanging plate 10 also stops sliding. During the closing process of the elevator car door 12, the sliding of the hanging plate 10 causes the locking rod 19 to enter the L-shaped slot on one side of the hanging plate 10. When locking is required after closing, the electric cylinder 20 is activated by the door controller 4. The lead screw of the electric cylinder 20 begins to rotate and retract, driving the slider 18 to slide upward within the fixed frame 16, and driving the slide rod 17 to slide within the slide hole. At the same time, the slider 18 drives the locking rod 19 to slide into the locking position of the slot, and the hanging plate 10 is locked, and the elevator car door 12 is unlocked. The elevator car door 12 is easily opened. When it is necessary to open the elevator car door 12, the door controller 4 controls the electric cylinder 20 to rotate in the reverse direction. The lead screw of the electric cylinder 20 drives the slider 18 to slide in the reverse direction, and the locking rod 19 slides out of the slot and locks in the locked position. The hanging plate 10 can slide freely, thereby realizing the opening of the elevator car door 12. During this process, the sliding of the hanging plate 10 will drive the brush 22 to slide in the groove. The bristles of the brush 22 will sweep away dust and debris that may be attached to the edge of the rectangular mounting hole and the surface of the upper sill 1. At the same time, the guide wheel 15 rolls along the guide rod 13, starting the drive. Motor 30 drives connecting shaft 28 to rotate, connecting shaft 28 drives second bevel gear 29 to rotate, second bevel gear 29 drives first bevel gear 26 to rotate, which in turn drives rotating shaft 24 to rotate. Rotating shaft 24 drives fan blades 25 to rotate, creating airflow. This allows outside air to enter the elevator door operator through the air inlet. During air intake, filter screen 31 blocks dust and debris in the air. Simultaneously, connecting shaft 28 drives scraper 32 to rotate within the opening, scraping away dust adhering to the surface of filter screen 31 to prevent clogging.
[0024] A fixed plate 5 is fixedly installed vertically on one side of the top of the dustproof box 2. Drive shafts 6 are rotatably installed at both ends of the fixed plate 5. One end of the drive shaft 6 passes through the fixed plate 5 and is fixedly installed with a rotating wheel 7. The rotating wheels 7 rotate in conjunction with each other via a transmission belt 8. A door operator motor 9 is fixedly installed on the other side of one end of the fixed plate 5. The rotating shaft of the door operator motor 9 is fixedly connected to one end of the drive shaft 6. Transmission arms 11 are fixedly installed on the upper part of one side and the lower part of the other side of the transmission belt 8. The transmission arms 11 are respectively connected to two corresponding... The mounting plate 10 is fixedly connected. During operation, when the elevator car door 12 needs to be opened or closed, the door controller 4 controls the door motor 9 to start. Its rotating shaft drives the drive shaft 6 and the rotating wheel 7 to rotate, and at the same time drives the transmission belt 8 to rotate. As the transmission belt 8 rotates, the transmission arm 11 drives the mounting plate 10 to slide in the rectangular mounting hole, thereby realizing the opening or closing action of the elevator car door 12. When it is necessary to stop the car door movement, the door controller 4 controls the door motor 9 to stop rotating, the transmission belt 8 to stop moving, and the mounting plate 10 also stops sliding.
[0025] A fixed shaft 14 is fixedly installed on the upper end of the hanging plate 10 near the fixed frame 16. A guide wheel 15 is rotatably installed on the fixed shaft 14. A guide rod 13 is provided at the bottom of the guide wheel 15 and both ends are fixedly installed on the inner wall of the dustproof box 2. During operation, when the hanging plate 10 slides back and forth under the drive of the transmission arm 11, the guide wheel 15 rolls along the guide rod 13 to ensure that the hanging plate 10 always moves in a straight line.
[0026] The mounting plate 10 has symmetrical L-shaped slots on opposite sides. An electric cylinder 20 is fixedly installed at the top center of the fixed frame 16. Sliding holes are provided on both sides of the top of the fixed frame 16, and sliding rods 17 are slidably installed within these holes. A slider 18 is slidably installed within the fixed frame 16. The lead screw of the electric cylinder 20 is rotatably mounted on the top of the slider 18. The lower ends of the sliding rods 17 are fixedly installed on the top of both sides of the slider 18. Locking rods 19 are fixedly installed on both ends of the slider 18 near the mounting plate 10, and these locking rods 19 are slidably positioned within the slots on opposite sides of the mounting plate 10. During operation, when the elevator car door 12 is closing, the mounting plate... 10. Sliding causes the locking rod 19 to enter the L-shaped slot on one side of the mounting plate 10. When locking is required after closing, the electric cylinder 20 is activated by the door controller 4. The lead screw of the electric cylinder 20 begins to rotate and retract, driving the slider 18 to slide upward within the fixed frame 16, and driving the slide rod 17 to slide within the sliding hole. At the same time, the slider 18 drives the locking rod 19 to slide into the locking position of the slot, locking the mounting plate 10. The elevator car door 12 cannot be easily opened. When it is necessary to open the elevator car door 12, the door controller 4 controls the electric cylinder 20 to rotate in the opposite direction. The lead screw of the electric cylinder 20 drives the slider 18 to slide in the opposite direction, and the locking rod 19 slides out of the locking position of the slot. The mounting plate 10 can slide freely, thereby realizing the opening of the elevator car door 12.
[0027] A second bevel gear 29 is fixedly mounted on a connecting shaft 28 on one side below the first bevel gear 26. The first bevel gear 26 and the second bevel gear 29 are perpendicular to each other and mesh with each other. One end of the connecting shaft 28 passes through the filter screen 31 and is fixedly mounted with a scraper 32. The scraper 32 is rotatably positioned in the opening. During operation, when the elevator is in use, the drive motor 30 is started to drive the connecting shaft 28 to rotate. The connecting shaft 28 drives the second bevel gear 29 to rotate, and the second bevel gear 29 drives the first bevel gear 26 to rotate, which in turn drives the rotating shaft 24 to rotate. The rotating shaft 24 drives the fan blades 25 to rotate, forming an airflow that allows outside air to enter the elevator door machine through the air inlet. During the air entry process, the filter screen 31 blocks dust and debris in the air. At the same time, the connecting shaft 28 drives the scraper 32 to rotate in the opening, scraping off the dust attached to the surface of the filter screen 31 and preventing the filter screen 31 from becoming clogged.
[0028] The drive motor 30, door operator motor 9, and electric cylinder 20 are all linearly connected to the door controller 4 via power lines, and the door controller 4 is used to control their start and stop. During operation, the door controller 4 precisely controls the start and stop and operating parameters of each motor according to the elevator's operating status and instructions. When it is necessary to open or close the elevator car door 12, the door controller 4 controls the door operator motor 9 to start. When ventilation and heat dissipation are required, the door controller 4 controls the drive motor 30 to start. When it is necessary to lock or unlock the elevator car door 12, the door controller 4 controls the electric cylinder 20 to start.
[0029] Working principle: During elevator operation, under normal circumstances, the sealing plate 3 is in the closed mounting slot state, isolating the interior of the dustproof box 2 from the outside. When it is necessary to open or close the elevator car door 12, the door controller 4 controls the door motor 9 to start. Its rotating shaft drives the drive shaft 6 and the rotating wheel 7 to rotate, simultaneously driving the transmission belt 8 to rotate. As the transmission belt 8 rotates, the transmission arm 11 drives the hanging plate 10 to slide within the rectangular mounting hole, thereby realizing the opening or closing action of the elevator car door 12. When it is necessary to stop the car door movement... The door controller 4 stops the door motor 9 from rotating, the transmission belt 8 stops moving, and the hanging plate 10 also stops sliding. During the closing process of the elevator car door 12, the hanging plate 10 slides, causing the locking rod 19 to enter the L-shaped slot on one side of the hanging plate 10. When locking is required after closing, the door controller 4 starts the electric cylinder 20. The lead screw of the electric cylinder 20 begins to rotate and retract, driving the slider 18 to slide upward in the fixed frame 16, driving the slide rod 17 to slide in the slide hole. At the same time, the slider 18 drives the locking rod 19 to slide into the locking position of the slot, and the hanging plate 10 is locked. The elevator car door 12 cannot be easily opened. When it is necessary to open the elevator car door 12, the door controller 4 controls the electric cylinder 20 to rotate in the reverse direction. The lead screw of the electric cylinder 20 drives the slider 18 to slide in the reverse direction, and the locking rod 19 slides out of the locking position. The hanging plate 10 can slide freely, thereby realizing the opening of the elevator car door 12. During this process, the sliding of the hanging plate 10 will drive the brush 22 to slide in the groove. The bristles of the brush 22 will sweep away dust and debris that may be attached to the edge of the rectangular mounting hole and the surface of the upper sill 1. At the same time, the guide wheel 15 rolls along the guide rod 13, opening... The drive motor 30 drives the connecting shaft 28 to rotate, the connecting shaft 28 drives the second bevel gear 29 to rotate, the second bevel gear 29 drives the first bevel gear 26 to rotate, which in turn drives the rotating shaft 24 to rotate. The rotating shaft 24 drives the fan blades 25 to rotate, forming an airflow that allows outside air to enter the elevator door machine through the air inlet. During the air intake process, the filter screen 31 blocks dust and debris in the air. At the same time, the connecting shaft 28 drives the scraper 32 to rotate in the opening, scraping off the dust attached to the surface of the filter screen 31 to prevent the filter screen 31 from becoming clogged.
[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An elevator door operator with a dustproof structure, characterized in that: The system includes an upper sill (1), on one side of which a rectangular mounting hole is provided at the bottom. A fixing block (21) is provided above the center of the rectangular mounting hole. A through hole is provided inside the fixing block (21), and sliding grooves are provided on both sides of the through hole. Brushes (22) are slidably installed in the sliding grooves. Hanging plates (10) are provided on both sides of the fixing block (21). The hanging plates (10) are slidably installed in the rectangular mounting hole. Both ends of the hanging plates (10) penetrate the upper sill (1), and the lower end is fixedly connected to the elevator car door (12). The brushes (22) are fixedly installed on the outside of the opposite sides of the two hanging plates (10). A dustproof box (2) is fixedly installed on the upper part of the upper sill (1). A door controller (4) is fixedly installed on the top of the dustproof box (2). An installation groove is provided on one side of the top of the dustproof box (2), and a sealing plate (3) is slidably installed in the installation groove. A fixing frame (16) is provided on one side of the fixing block (21). The upper part of the upper sill (1) is fixedly installed. Both ends of the upper sill (1) are provided with air inlets. Below the air inlets, the air box (23) is fixedly installed at the bottom of the upper sill (1). The air inlets are provided with rotating shafts (24) which are rotatably installed through brackets. The upper end of the rotating shaft (24) is fixedly installed with fan blades (25). The lower end of the rotating shaft (24) is rotatably installed inside the upper end of the air box (23) and fixedly installed with a first bevel gear (26). Both sides of the first bevel gear (26) are provided with support plates (27) which are fixedly installed inside the top of the air box (23). The lower ends of the support plates (27) are rotatably installed with a connecting shaft (28). One end of the air box (23) is fixedly installed with a drive motor (30). The rotating shaft of the drive motor (30) is fixedly connected to one end of the connecting shaft (28). The other end of the air box (23) is provided with an opening, and a filter screen (31) is fixedly installed inside the opening.
2. The elevator door operator with a dustproof structure according to claim 1, characterized in that: A fixed plate (5) is fixedly installed on the top side of the dustproof box (2) on a vertical horizontal plane. A drive shaft (6) is rotatably installed on both ends of the fixed plate (5). One end of the drive shaft (6) passes through the fixed plate (5) and is fixedly installed with a rotating wheel (7). The rotating wheels (7) rotate in cooperation with each other through a transmission belt (8). A door motor (9) is fixedly installed on the other side of one end of the fixed plate (5). The rotating shaft of the door motor (9) is fixedly connected to one end of the drive shaft (6). A transmission arm (11) is fixedly installed on the upper part of one side and the lower part of the other side of the transmission belt (8). The transmission arm (11) is fixedly connected to the corresponding two hanging plates (10).
3. An elevator door operator with a dustproof structure according to claim 1, characterized in that: A fixed shaft (14) is fixedly installed on the upper end of the hanging plate (10) near the fixed frame (16). A guide wheel (15) is rotatably installed on the fixed shaft (14). A guide rod (13) is provided at the bottom of the guide wheel (15) and both ends are fixedly installed on the inner wall of the dustproof box (2).
4. An elevator door operator with a dustproof structure according to claim 1, characterized in that: The mounting plate (10) has symmetrical slots on opposite sides, and the slots are L-shaped. An electric cylinder (20) is fixedly installed in the center of the top of the fixed frame (16). Sliding holes are opened on both sides of the top of the fixed frame (16), and sliding rods (17) are slidably installed in the sliding holes. A slider (18) is slidably installed in the fixed frame (16). The lead screw of the electric cylinder (20) is rotatably installed on the top of the slider (18). The lower ends of the sliding rods (17) are fixedly installed on the top of both sides of the slider (18). Locking rods (19) are fixedly installed on both ends of the slider (18) near the mounting plate (10). The locking rods (19) are slidably installed in the slots on opposite sides of the mounting plate (10).
5. An elevator door operator with a dustproof structure according to claim 1, characterized in that: A second bevel gear (29) is fixedly mounted on a connecting shaft (28) on one side below the first bevel gear (26). The first bevel gear (26) and the second bevel gear (29) are perpendicular to each other and mesh with each other. One end of the connecting shaft (28) passes through the filter screen (31) and is fixedly mounted with a scraper (32). The scraper (32) is rotatably mounted in the opening.
6. An elevator door operator with a dustproof structure according to claim 1, characterized in that: The drive motor (30), the door motor (9) and the electric cylinder (20) are all linearly connected to the door controller (4) via power lines, and the door controller (4) is used to control their start and stop.