Elevator car with self-cleaning function

Abstract

The application discloses an elevator car with a self-cleaning function, which comprises a car body, a crawling frame arranged in the car body, the crawling frame being attached to a car wall surface, the crawling frame being provided with an X-axis driving mechanism, a Y-axis driving mechanism and a rotary driving mechanism, one reduction motor being used to realize the lifting action of the crawling frame in the Y-axis direction, the horizontal movement of a scrubbing disc in the X-axis direction and the rotary action of the scrubbing disc, the crawling frame being in a U shape and being capable of simultaneously cleaning three surfaces of the car, the movement and the rotary action of the scrubbing discs of the three surfaces and the lifting being driven by one motor and being decoupled, the weight of the crawling frame being effectively reduced, the load being reduced, the movement speed of the Y-axis being improved, the efficiency being improved and the energy consumption being reduced, and in addition, double hand-clamping protection devices are arranged to maximally protect the safety of passengers.

Description

Technical Field

[0001] This invention relates to the field of elevator cars, specifically to an elevator car with a self-cleaning function. Background Technology

[0002] As a public facility, the elevator car is an enclosed space where passengers are in close contact, which can easily lead to the spread of viruses. It is necessary to automatically clean and disinfect the walls and air inside the elevator car.

[0003] Patent CN207957470U discloses a car with dust removal and sterilization functions, including a brush for cleaning the inner wall of the main body and a first transmission device for making the brush clean the side wall of the main body. A synchronous pulley drives a synchronous belt to move up and down. An N-pole magnet is set on the synchronous belt, and an S-pole magnet is located on the brush. The N-pole magnet moves up and down with the synchronous belt, attracting the S-pole magnet to move up and down, thereby driving the brush to move up and down. In the above solution, the brush is strip-shaped and horizontally arranged. The brush is attracted and pulled by magnets. Because the brush encounters great resistance during movement, a large traction force is required to provide power during movement. In addition, sufficient magnetic force is required to ensure that the brush does not fall off, resulting in high power consumption. Furthermore, the brush itself can only move in one direction, limiting the cleaning effect. In practical applications, it is necessary to clean three walls of the elevator car simultaneously, requiring three sets of mechanisms and three sets of power systems, which results in complex installation, high power consumption, and limited cleaning effect. Summary of the Invention

[0004] The purpose of this invention is to provide an elevator car with a self-cleaning function, which solves the problems of inconvenient installation, high energy consumption and poor cleaning effect in the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] An elevator car with a self-cleaning function includes a car body and a crawling frame installed inside the car body. The crawling frame is attached to the car wall and is equipped with a Y-axis drive mechanism that can drive the crawling frame to move up and down. A scrubbing disc is installed inside the crawling frame and can move laterally along the crawling frame. In turn, the scrubbing disc can move within the plane of the car wall to complete the scrubbing and cleaning work of the car wall.

[0007] To reduce the installation difficulty of the climbing frame, it is connected to the car body via a reverse-locking synchronous belt. The Y-axis drive mechanism of the climbing frame includes two drive wheels (left and right), a reversing pressure roller, a drive shaft, a worm gear, a worm, and a geared motor. The teeth of the drive wheels mesh with the teeth of the synchronous belt. The reversing pressure roller presses the synchronous belt tightly against the wall. The two drive wheels are connected and rotate synchronously via the drive shaft. A worm gear is mounted on the drive shaft, and the worm drives the worm gear to rotate. The worm is connected to the geared motor. By electrically controlling the forward and reverse rotation of the geared motor, the two drive wheels can be rotated synchronously, thereby driving the climbing frame to move up and down, i.e., move in the Y-axis direction. The worm gear mechanism between the geared motor and the drive wheels reduces speed and increases torque. The worm gear also has a self-locking function to prevent the climbing frame from falling freely in the event of a power outage.

[0008] In order to enable the scrubbing disc to move laterally along the crawling frame, the crawling frame is also equipped with an X-axis drive mechanism, which includes a slider, a timing belt ring, a positioning pulley, and a power wheel.

[0009] To achieve simultaneous movement and rotation of the scrubbing disc along the X-axis, thereby enhancing the cleaning effect, a rotary drive mechanism is connected to the scrubbing disc. This mechanism includes a rotating gear, a fixed rack, and a rotating shaft. The rotating gear is fixedly connected to the scrubbing disc and connected to a slider via the rotating shaft. The rotating gear meshes with the fixed rack, which is positioned along the X-axis. As the slider drives the rotating gear along the X-axis, the rotating gear simultaneously drives the scrubbing disc to rotate. This simultaneous movement and rotation of the scrubbing disc along the X-axis improves the cleaning effect.

[0010] In this invention, to reduce the weight of the climbing frame, the geared motor responsible for driving the Y-axis also provides power to the drive wheel of the X-axis. To enable the geared motor to simultaneously power both the X-axis and Y-axis movements, while decoupling the X-axis and Y-axis movements, two electromagnetic clutches are installed on the output shaft of the geared motor. The X-axis electromagnetic clutch controls the connection and disconnection of power between the output shaft and the X-axis drive wheel, while the Y-axis electromagnetic clutch controls the connection and disconnection of power to the Y-axis drive wheel.

[0011] The above solution utilizes only a single geared motor to achieve the lifting and lowering of the crawler frame in the Y-axis direction, the translational movement of the scrubbing disc in the X-axis direction, and the rotation of the scrubbing disc. The structure is simple and reliable, effectively reducing the weight of the crawler frame, lowering the traction load, saving space, and reducing energy consumption.

[0012] Furthermore, during the lifting and lowering process, the climbing frame may come into contact with passengers. Therefore, passenger safety must be the top priority in the design. In this solution, an anti-pinch protection device is installed on the climbing frame. This device includes a flexible protective shell, inside which a limit switch is installed. The limit switch sends an electrical signal to the control board, which controls the Y-axis electromagnetic clutch. When the climbing frame encounters external resistance during lifting and lowering, the flexible protective shell deforms, triggering the limit switch, disengaging the Y-axis electromagnetic clutch, and interrupting power, thus achieving the protection purpose. To further improve safety, a redundant safety design is adopted. A maximum torque mechanical adjustment device is installed on the Y-axis electromagnetic clutch to set the maximum output torque of the electromagnetic clutch. This set value is slightly greater than the power required for the climbing frame to lift. When the climbing frame encounters external resistance during lifting and lowering and the limit switch fails, the electromagnetic clutch will slip, preventing accidents caused by high torque output.

[0013] In order to purify and disinfect the air inside the car while cleaning the car walls, it is preferable to install an air purifier on the climbing frame. The air purifier moves with the climbing frame and is relatively independently fixed. The integrated design saves space and is easy to install. Moving the air purifier around helps to improve the efficiency of air circulation and purification.

[0014] Preferably, the crawler frame is divided into three parts: left, middle, and right, which are joined together to form a U-shape. Only the middle part contains a motor, while the left and right parts do not. The drive shaft of the middle part is connected to the drive shafts of the left and right parts via bevel gears, thereby transmitting the power in the Y-axis direction of the middle part to the left and right parts and ensuring synchronous movement of the three parts. The positioning pulley of the middle part is linked to the positioning pulleys of the left and right parts via bevel gears, thereby transmitting the power in the X-axis direction of the middle part to the left and right parts.

[0015] The crawler frame is U-shaped and can clean three sides of the car simultaneously. The movement, rotation, and lifting of the three cleaning discs are all driven by a single motor, which effectively reduces the weight of the crawler frame, thereby reducing the load and helping to increase the Y-axis movement speed. This improves efficiency while reducing energy consumption.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The scrubbing disc can move within the plane of the car wall to complete the scrubbing and cleaning work of the car wall.

[0018] Second, the scrubbing disc rotates while moving along the X-axis, which can improve the scrubbing and cleaning effect.

[0019] Third, using only one geared motor, the climbing frame can be raised and lowered in the Y-axis direction, the scrubbing disc can be translated in the X-axis direction, and the scrubbing disc can be rotated. The structure is simple and reliable, which can effectively reduce the weight of the climbing frame, reduce the traction load, save space and reduce energy consumption.

[0020] IV. A double anti-pinch protection device is installed to maximize passenger safety.

[0021] Fifth, it can clean three sides of the car simultaneously. The movement, rotation, and lifting of the three cleaning discs are all driven by a single motor, which can effectively reduce the weight of the crawler frame, thereby reducing the load and helping to increase the Y-axis movement speed. This improves efficiency while reducing energy consumption. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the Y-axis drive mechanism inside the crawler frame.

[0025] Figure 3 for Figure 2 AA view.

[0026] Figure 4 This is a schematic diagram of the X-axis drive mechanism.

[0027] Figure 5 This is a structural diagram showing the linkage between the X-axis drive mechanism and the rotary drive mechanism.

[0028] Figure 6 This is a schematic diagram of the electromagnetic clutch for driving the motor.

[0029] Figure 7 This is a schematic diagram of the installation of the anti-pinch device and the air purifier.

[0030] Figure 8 This is a diagram of the power transmission frame of the U-shaped climbing frame.

[0031] In the diagram: 1—Car body; 2—Crawling frame; 21—Y-axis drive mechanism; 211—Drive wheel; 212—Reversing pressure roller; 213—Drive shaft; 214—Worm gear; 215—Worm; 216—Gear motor; 2161—Output shaft; 2162—X-axis electromagnetic clutch; 2163—Y-axis electromagnetic clutch; 22—Fixed synchronous belt; 23—Scrubbing disc; 24—X-axis drive mechanism; 241—Slider; 242—Synchronous belt ring; 243—Positioning pulley; 244—Power wheel; 25—Rotary drive mechanism; 251—Rotary gear; 252—Fixed rack; 253—Rotary shaft seat; 3—Anti-pinch device; 31—Flexible protective shell; 32—Limit switch; 4—Air purifier. Detailed Implementation

[0032] like Figure 1 As shown, an elevator car with a self-cleaning function includes a car body 1, a crawler frame 2 is provided inside the car body 1, the crawler frame 2 is attached to the car wall, the crawler frame 2 is equipped with a Y-axis drive mechanism 21, the Y-axis drive mechanism 21 can drive the crawler frame 2 to move up and down, a scrubbing disc 23 is provided inside the crawler frame 2, the scrubbing disc 23 can move laterally along the crawler frame 2, and thus the scrubbing disc 23 can move in the plane where the car wall is located to complete the scrubbing and cleaning work of the car wall.

[0033] To reduce the installation difficulty of the climbing frame 2, such as Figure 2 and 3 As shown, the crawler frame 2 is connected to the car body 1 via a fixed synchronous belt 22 with a reverse snap. The Y-axis drive mechanism 21 of the crawler frame 2 includes two drive wheels 211, a reversing pressure wheel 212, a drive shaft 213, a worm gear 214, a worm 215, and a reduction motor 216. The teeth of the drive wheels 211 mesh with the teeth of the fixed synchronous belt 22. The reversing pressure wheel 212 presses the fixed synchronous belt 22 tightly against the wall. The two drive wheels 211 are connected and rotate synchronously through the drive shaft 213. The worm gear 214 is installed on the drive shaft 213. The worm 215 drives the worm gear 214 to rotate. The worm 215 is connected to the reduction motor 216.

[0034] By electrically controlling the geared motor 216 to rotate forward and backward, the two drive wheels 211 on the left and right can be rotated synchronously, thereby driving the climbing frame 2 to move up and down, that is, to move in the Y-axis direction. The geared motor 216 and the drive wheels 211 are decelerated through a worm gear mechanism, which can improve the torque. At the same time, the worm gear has a self-locking function, which can prevent the climbing frame 2 from falling freely in the event of a power failure.

[0035] In order to enable the scrubbing disc 23 to move laterally along the crawler frame 2, the crawler frame 2 is also provided with an X-axis drive mechanism 24, such as... Figure 4As shown, the X-axis drive mechanism 24 includes a slider 241, a synchronous belt ring 242, a positioning pulley 243, and a power wheel 244. The synchronous belt ring 242 is fitted onto the positioning pulley 243, and the power wheel 244 provides power to the synchronous belt ring 242. The slider 241 is fixedly connected to the synchronous belt ring 242. The forward and reverse rotation of the power wheel 244 can drive the slider 241 to move back and forth. The scrubbing disc 23 is fixedly connected to the slider, and the scrubbing disc 23 moves with the slider 241, thus realizing movement in the X-axis direction.

[0036] Furthermore, in order to achieve simultaneous movement and rotation of the scrubbing disc 23 along the X-axis, thereby enhancing the cleaning effect, as follows... Figure 5 As shown, a rotary drive mechanism 25 is connected to the scrubbing disc 23. The rotary drive mechanism 25 includes a rotary gear 251, a fixed rack 252, and a rotary bearing 253. The rotary gear 251 is fixedly connected to the scrubbing disc 23 and is connected to the slider 241 through the rotary bearing 253. The rotary gear 251 meshes with the fixed rack 252, which is set along the X-axis. While the slider 241 drives the rotary gear 251 to move along the X-axis, the rotary gear 251 also rotates under the action of the fixed rack 252, thereby driving the scrubbing disc 23 to rotate. This achieves the scrubbing disc 23 to rotate while moving along the X-axis, which can improve the scrubbing and cleaning effect.

[0037] The drive wheel 244, which provides power for the movement of the scrubbing disc 23 in the X-axis direction, can be connected to an independent geared motor. In this invention, to reduce the weight of the crawler frame 2, the geared motor 216, which drives the Y-axis, also provides power to the drive wheel 244 on the X-axis. To enable the geared motor 216 to simultaneously power both the X-axis and Y-axis movements, and to decouple the X-axis and Y-axis movements, as follows... Figure 6 As shown, two electromagnetic clutches are installed on the output shaft 2161 of the geared motor 216. The X-axis electromagnetic clutch 2162 is responsible for controlling the power connection and interruption between the output shaft 2161 and the X-axis power wheel 244, and the Y-axis electromagnetic clutch 2163 is responsible for the power connection and interruption of the Y-axis drive wheel 211.

[0038] When the Y-axis requires power, the X-axis electromagnetic clutch 2162 disengages while the Y-axis electromagnetic clutch 2163 engages, and the geared motor 216 provides power for the lifting and lowering of the crawler frame 2; when the X-axis requires power, the X-axis electromagnetic clutch 2162 engages while the Y-axis electromagnetic clutch 2163 disengages, and the geared motor 216 provides power for the translation and rotation of the scrubbing disc 23.

[0039] The above solution can achieve the lifting and lowering of the crawler frame 2 in the Y-axis direction, the translational movement of the scrubbing disc 23 in the X-axis direction, and the rotation of the scrubbing disc 23 using only a single geared motor. The structure is simple and reliable, effectively reducing the weight of the crawler frame 2, lowering the traction load, saving space, and reducing energy consumption.

[0040] Furthermore, during the lifting and lowering process, the climbing frame 2 may come into contact with passengers. Therefore, passenger safety must be the top priority in the design. In this solution, an anti-pinch protection device 3 is installed on the climbing frame 2, such as... Figure 7 As shown, the anti-pinch protection device 3 includes a flexible protective shell 31, and a limit switch 32 is provided inside the flexible protective shell 31. The limit switch 32 sends an electrical signal to the control board, and the control board controls the Y-axis electromagnetic clutch 2163.

[0041] If the crawler frame 2 encounters external resistance during the lifting process, the flexible protective shell 31 will deform, triggering the limit switch 32, disengaging the Y-axis electromagnetic clutch 2163, interrupting power, and achieving the purpose of protection.

[0042] The aforementioned anti-pinch hand protection scheme is implemented through electrical control. To further enhance safety, a redundant safety design is adopted. A maximum torque mechanical adjustment device is installed on the Y-axis electromagnetic clutch 2163 to set the maximum output torque of the electromagnetic clutch 2163. This set value is slightly greater than the power required for the climbing frame 2 to lift. If the climbing frame 2 encounters external resistance during lifting and lowering and the limit switch fails, the electromagnetic clutch 2163 will slip, preventing accidents caused by high torque output. Through dual redundancy protection of mechanical and electrical components, passenger safety can be protected to the maximum extent.

[0043] In order to purify and disinfect the air inside the car while cleaning the car walls, an air purifier 4 is installed on the crawler frame 2. The air purifier 4 moves with the crawler frame 2 and is installed relatively independently. The integrated design saves space and is easy to install. Moving the air purifier around helps to improve the efficiency of air circulation and purification.

[0044] As a preferred option, such as Figure 8 As shown, the crawler frame 2 is divided into three parts: left, middle, and right. These three parts are joined together to form a U-shape. Only the middle part contains a motor; the left and right parts do not. The drive shaft 213 of the middle part is connected to the drive shafts of the left and right parts via bevel gears, thereby transmitting the power in the Y-axis direction of the middle part to the left and right parts and ensuring synchronous movement of the three parts. The positioning pulley 243 of the middle part is linked to the positioning pulleys of the left and right parts via bevel gears, thereby transmitting the power in the X-axis direction of the middle part to the left and right parts.

[0045] The crawler frame 2 is U-shaped and can clean three sides of the car at the same time. The movement, rotation and lifting of the three cleaning discs are all driven by a single motor, which can effectively reduce the weight of the crawler frame 2, thereby reducing the load and helping to increase the movement speed of the Y-axis. This improves efficiency while reducing energy consumption.

[0046] The above-disclosed embodiments are merely specific examples of this patent, but this patent is not limited thereto. For those skilled in the art, any modifications made without departing from the principles of this invention should be considered to fall within the scope of protection of this invention.

Claims

1. An elevator car with a self-cleaning function, comprising a car body (1), characterized in that: A crawler frame (2) is installed inside the car body (1). The crawler frame (2) is attached to the car wall. The crawler frame (2) is equipped with a Y-axis drive mechanism (21). The Y-axis drive mechanism (21) can drive the crawler frame (2) to move up and down. A scrubbing disc (23) is installed inside the crawler frame (2). The scrubbing disc (23) can move laterally along the crawler frame (2). The crawler frame (2) is connected to the car body (1) through a fixed timing belt (22) with a reverse buckle. The Y-axis drive mechanism (21) of the crawler frame (2) includes two drive wheels (211) on the left and right sides. The drive shaft (213), reversing pressure roller (212), drive shaft (213), worm wheel (214), worm (215), and geared motor (216) are connected. The teeth of the drive wheel (211) mesh with the teeth of the fixed synchronous belt (22). The reversing pressure roller (212) presses the fixed synchronous belt (22) tightly against the wall. The left and right drive wheels (211) are connected and rotate synchronously through the drive shaft (213). The worm wheel (214) is installed on the drive shaft (213). The worm (215) drives the worm wheel (214) to rotate. The worm (215) is connected to the geared motor (216).

2. The elevator car with self-cleaning function according to claim 1, characterized in that: The crawler frame (2) is also provided with an X-axis drive mechanism (24). The X-axis drive mechanism (24) includes a slider (241), a synchronous belt ring (242), a positioning pulley (243), and a power wheel (244). The synchronous belt ring (242) is fitted onto the positioning pulley (243). The power wheel (244) provides power to the synchronous belt ring (242). The slider (241) is fixedly connected to the synchronous belt ring (242). The forward and reverse rotation of the power wheel (244) can drive the slider (241) to move back and forth. The scrubbing disc (23) is fixedly connected to the slider and moves with the slider (241).

3. The elevator car with self-cleaning function according to claim 2, characterized in that: A rotary drive mechanism (25) is connected to the wiping disc (23). The rotary drive mechanism (25) includes a rotary gear (251), a fixed rack (252), and a rotary bearing (253). The rotary gear (251) is fixedly connected to the wiping disc (23). The rotary gear (251) is connected to the slider (241) through the rotary bearing (253). The rotary gear (251) meshes with the fixed rack (252). The fixed rack (252) is set along the X-axis. While the slider (241) drives the rotary gear (251) to move along the X-axis, the rotary gear (251) drives the wiping disc (23) to rotate.

4. The elevator car with self-cleaning function according to claim 3, characterized in that: Two electromagnetic clutches are installed on the output shaft (2161) of the geared motor (216). The X-axis electromagnetic clutch (2162) is responsible for controlling the power connection and interruption between the output shaft (2161) and the X-axis power wheel (244), and the Y-axis electromagnetic clutch (2163) is responsible for the power connection and interruption of the Y-axis drive wheel (211).

5. The elevator car with self-cleaning function according to claim 4, characterized in that: An anti-pinch protection device (3) is provided on the crawler frame (2). The anti-pinch protection device (3) includes a flexible protective shell (31) and a limit switch (32) is provided inside the flexible protective shell (31). The limit switch (32) sends an electrical signal to the control board, and the control board controls the Y-axis electromagnetic clutch (2163).

6. The elevator car with self-cleaning function according to claim 5, characterized in that: A maximum torque mechanical adjustment device is provided on the Y-axis electromagnetic clutch (2163).

7. The elevator car with self-cleaning function according to claim 6, characterized in that: An air purifier (4) is installed on the climbing frame (2), and the air purifier (4) moves with the climbing frame (2).

8. The elevator car with self-cleaning function according to claim 6 or 7, characterized in that: The crawler frame (2) is divided into three parts: left, middle and right. The three parts are spliced ​​into a U-shape. Only the middle part contains a motor, while the left and right parts do not. The drive shaft (213) of the middle part is connected to the drive shafts of the left and right parts through bevel gears, which transmits the power of the middle part in the Y-axis direction to the left and right parts. The positioning pulley (243) of the middle part is linked with the positioning pulleys of the left and right parts through bevel gears, which transmits the power of the middle part in the X-axis direction to the left and right parts.

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