Elevator car cleaning and disinfection device, system and method

Abstract

The present invention discloses an elevator car cleaning and sterilizing device, system and method, comprising a horizontally arranged crossbeam, a cleaning device is arranged below the crossbeam, the cleaning device is connected to the crossbeam through a lifting mechanism, and the lifting mechanism can drive the cleaning device to move up and down; a plurality of detergent nozzles and disinfectant nozzles are also arranged on the crossbeam; a detergent supply device and a disinfectant supply device are also included, the detergent nozzle is connected to the detergent supply device, and the disinfectant nozzle is connected to the disinfectant supply device. The present invention can automatically clean, disinfect and sterilize the elevator car to reduce labor costs, save time and labor, have high disinfection efficiency and be safer.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to an elevator car cleaning and disinfection device, system and method. Background Art

[0002] When riding in an elevator, you are in a confined space, which can easily cause the spread of viruses. Currently, most elevator cars are cleaned and disinfected by cleaning staff on a regular basis, once every morning or once every two days. In addition, the elevator cars are high, so cleaning staff cannot clean them completely and the purpose of disinfecting the virus cannot be achieved. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an elevator car cleaning and disinfection device, system and method, which can automatically clean, disinfect and sterilize the elevator car to reduce labor costs, save time and effort, have high disinfection efficiency and greater safety.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An elevator car cleaning and disinfection device comprises a horizontally arranged crossbeam, a cleaning device is arranged below the crossbeam, the cleaning device is connected to the crossbeam through a lifting mechanism, and the lifting mechanism can drive the cleaning device to move up and down; a plurality of detergent nozzles and disinfectant nozzles are also arranged on the crossbeam; and also comprises a detergent supply device and a disinfectant supply device, the detergent nozzle is connected to the detergent supply device, and the disinfectant nozzle is connected to the disinfectant supply device.

[0006] As an optimization, the cross-sectional shape of the beam is generally rectangular, and a first slide groove extending along its length direction is provided on the lower side of the beam; the lifting mechanism includes multiple groups of scissor-fork assemblies and a driving mechanism, and the scissor-fork assembly includes two cross-arranged and rotatably connected scissor-fork arms, and the scissor-fork arms of two adjacent scissor-fork assemblies are rotatably connected via a rotating pair; the two scissor-fork arm ends of the scissor-fork assembly located at the top are slidably connected to the first slide groove, and are connected to the driving mechanism, and can move away from or approach each other under the drive of the driving mechanism, and the two scissor-fork arm ends of the scissor-fork assembly located at the bottom are slidably connected to the cleaning device.

[0007] As an optimization, a driving mechanism is respectively provided at both ends of the crossbeam, and the driving mechanism includes an outer shell, a driving motor, a transmission screw and a push rod. The outer shell is installed under the crossbeam, and the driving motor is installed on the outer wall of the outer shell and is connected with a transmission screw arranged in the outer shell through gear transmission. The length direction of the transmission screw is consistent with the length direction of the crossbeam, one end of the transmission screw is transmission-connected with the driving motor, and the other end extends out of the outer shell and is connected with the push rod; the push rod is a cylindrical structure, and its open end is inserted into one end of the outer shell extending from the transmission screw, and is connected to the transmission screw through a limit nut, and the other end is connected to a slider; the limit nut is threadably connected with the transmission screw, and when the transmission screw rotates, it can move along the axis of the transmission screw, and can fit with the inner wall of the outer shell close to the push rod; the slider is slidingly connected with the first slide groove, and the slider is hinged to the adjacent scissor arm end.

[0008] As an optimization, a driving gear is installed on the motor shaft of the driving motor, and a driven gear meshing with the driving gear is installed at the end of the transmission screw.

[0009] As an optimization, the cleaning device includes a cleaning base parallel to the crossbeam, and a cleaning brush is provided on one side of the cleaning base along its length direction; a second slide groove is provided on the cleaning base along its length direction, and the end of the scissors arm of the scissors assembly located at the bottom of the lifting mechanism is slidably connected to the second slide groove.

[0010] As an optimization, a cleaning hole and a disinfection hole extending along the length direction of the beam are provided inside the side of the beam away from the first slide groove, one end of the cleaning hole is closed, and the other end is connected to the cleaning agent supply device, and one end of the disinfection hole is closed, and the other end is connected to the disinfectant supply device; the detergent nozzle and disinfectant nozzle each include a plurality of nozzles, which are arranged on the lower side of the beam, and the detergent nozzle is communicated with the cleaning hole, and the disinfectant nozzle is communicated with the disinfection hole.

[0011] As an optimization, a mounting groove extending along the length direction of the beam is provided on the lower side of the beam, and an ultraviolet lamp is installed in the mounting groove.

[0012] As an optimization, the detergent supply device includes a detergent tank, which is connected to the cleaning hole through a pipeline; the disinfectant supply device includes a disinfectant tank, which is connected to the disinfection hole through a pipeline; a pressure pump and a one-way pressure valve are connected in series on the pipeline.

[0013] Based on the above cleaning and disinfection device, the present invention further provides an elevator car cleaning and disinfection system, comprising an elevator car and an elevator control system, wherein a decorative ceiling is provided on the top of the elevator car, and a gap is provided between the surrounding side of the decorative ceiling and the side wall of the elevator car; the cleaning and disinfection device is installed in the gap between the decorative ceiling and the two side walls and the rear side wall of the elevator car, wherein the crossbeam is fixedly connected to the top of the car, the lifting mechanism, the ultraviolet lamp, the cleaning agent nozzle and the disinfectant nozzle can be moved down from the gap between the decorative ceiling and the side wall of the elevator car, and the cleaning brush of the cleaning device can fit the side wall of the elevator car;

[0014] An infrared sensing device is also provided in the elevator car, and a detection end of the infrared sensing device faces the elevator car;

[0015] The detergent supply device and the disinfectant supply device are located on the top of the car, and the drive motor, the ultraviolet lamp, the infrared sensing device, the detergent supply device and the disinfectant supply device are all connected to the elevator control system.

[0016] Based on the above cleaning and disinfection system, the present invention also provides an elevator car cleaning and disinfection method, including the above elevator car cleaning and disinfection system, comprising the following steps:

[0017] S1. When the infrared sensing device detects that there are no passengers in the elevator car, it transmits a signal to the elevator control system;

[0018] S2. After receiving the signal from the infrared sensor, the elevator control system puts the elevator into maintenance mode and sends a working signal to the pressure pump and the one-way pressure valve of the detergent supply device, so that the detergent enters the detergent nozzle through the pipeline and is sprayed out;

[0019] S3, after the detergent nozzle sprays for a preset time, the elevator control system sends a stop signal to the detergent supply device, the pressure pump and the one-way pressure valve, and after receiving the feedback signal that the pressure pump and the one-way pressure valve stop working, the elevator control system sends a working signal to the driving motor of the driving mechanism;

[0020] S4, the driving motor starts after receiving the working signal, drives the transmission screw to rotate, drives the push rod to push the slider to slide along the first slide groove through the limit nut, thereby driving the cleaning device to move downward through the scissor assembly. When the limit nut moves to a position that fits the inner wall of the outer shell, the cleaning device moves to the lowest position, and the driving motor reverses to move the cleaning device upward. When the cleaning device reciprocates up and down for a preset number of times, the elevator control system sends a stop signal to the driving motor;

[0021] S5. After receiving the feedback signal that the driving motor stops working, the elevator control system sends a working signal to the pressure pump and the one-way pressure valve of the disinfectant supply device, so that the disinfectant enters the disinfectant nozzle through the pipeline and is sprayed out;

[0022] S6. After the disinfectant nozzle sprays for a preset time, the elevator control system sends a stop signal to the pressure pump and the one-way pressure valve of the disinfectant supply device. After receiving the feedback signal that the pressure pump and the one-way pressure valve stop working, the elevator control system restores the elevator to normal use and sends a working signal to the ultraviolet lamp.

[0023] S7. After the ultraviolet lamp works for a preset time, the elevator control system sends a stop signal to the ultraviolet lamp to complete the cleaning and disinfection of the elevator car.

[0024] Compared with the prior art, this application has the following beneficial effects:

[0025] The present invention mainly comprises four parts: a cleaning brush, a detergent spray, a disinfectant spray, and an ultraviolet lamp. It can conveniently automatically clean and disinfect the car by setting a fixed time. By setting an infrared sensing device, when there are passengers in the car and the elevator is in operation, the intelligent automatic cleaning and disinfection device of the car is not started. After the passengers leave the car, the intelligent automatic cleaning and disinfection device of the car starts to work, and the elevator is in a maintenance state and cannot be taken (the cleaning and disinfection time lasts for 20 seconds to 30 seconds); after cleaning and disinfection, the elevator returns to normal when the ultraviolet lamp is working. By installing the entire device at the spacing position between the decorative ceiling and the side wall of the elevator car, the infrared sensing device is installed on the decorative ceiling to monitor the passengers in the car, and the detergent pool and the disinfectant pool are fixed above the car top to facilitate the addition of detergents and disinfectants. The entire car intelligent automatic cleaning and disinfection device is connected in series with the elevator control system and controlled by the elevator control system, which has the characteristics of low labor cost, time and labor saving, high disinfection efficiency, high safety and high intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 It is a side view structural schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-section structure of the beam in the present invention;

[0029] Figure 4 It is a schematic diagram of the driving mechanism structure in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the elevator car cleaning and disinfection system of the present invention;

[0031] Figure 6 It is a schematic diagram of installation and use of the present invention;

[0032] In the figure, 1 is a crossbeam, 2 is a cleaning device, 3 is a detergent nozzle, 4 is a disinfectant nozzle, 5 is a first slide, 6 is a scissor arm, 7 is a driving motor, 8 is a transmission screw, 9 is a push rod, 10 is a limit nut, 11 is a slider, 12 is a receiving groove, 13 is a driving gear, 14 is a driven gear, 15 is a cleaning hole, 16 is a disinfection hole, 17 is an ultraviolet lamp, 18 is a detergent tank, 19 is a disinfectant tank, 20 is a pressure pump, 21 is a one-way pressure valve, 22 is an elevator car, 23 is a decorative ceiling, and 24 is an infrared sensing device. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] For specific implementation: see Figure 1-Figure 6 ,

[0035] An elevator car cleaning and disinfection device includes a beam 1 horizontally arranged on the top of the elevator car 22, the beam 1 is made of aluminum alloy, a lifting mechanism is installed on the beam 1, a cleaning device 2 is installed on the lifting mechanism, and the lifting mechanism can drive the cleaning device 2 to move up and down. Specifically, the cross-sectional shape of the cross beam 1 is rectangular as a whole, and a first slide groove 5 extending along its length direction is provided on the lower side of the cross beam 1; the lifting mechanism includes multiple groups of scissor fork assemblies and driving mechanisms, each group of scissor fork assemblies includes left and right scissor fork arms 6, and the left and right scissor fork arms 6 are cross-connected by a rotating pair, and the upper and lower adjacent scissors fork are connected to each other, wherein the ends of the left and right scissor fork arms 6 of the upper scissors fork are connected to the ends of the right and left scissor fork arms 6 of the lower scissors fork by a rotating pair to form a quadrilateral structure; the ends of the left and right scissor fork arms 6 of the scissors fork located at the top are slidably connected to the first slide groove 5, and are connected to two driving mechanisms respectively arranged at both ends of the first slide groove 5, and can move away from or approach each other under the drive of the driving mechanism, and the ends of the left and right scissor fork arms 6 of the scissors fork located at the bottom are connected to the cleaning device 2. The cleaning device 2 includes a cleaning base parallel to the crossbeam 1, and a cleaning brush is provided on one side of the cleaning base along its length direction; a second slide groove extending along its length direction is provided on the cleaning base, and the ends of the left and right scissor arms 6 of the scissors fork located at the bottom of the lifting mechanism are slidably connected with the second slide groove. The driving mechanism includes a driving motor 7, a transmission screw 8 and a top rod 9, and one end of the transmission screw 8 is transmission-connected with the driving motor 7. Specifically, a driving gear 13 is installed on the motor shaft of the driving motor 7, and a driven gear 14 meshing with the driving gear 13 is installed at the end of the transmission screw 8. The other end of the transmission screw 8 is threadedly sleeved with a limit nut 10. When the drive motor 7 drives the transmission screw 8 to rotate along its axis, the limit nut 10 can be driven to move along the axis of the transmission screw 8. One end of the push rod 9 is fixedly connected to the limit nut 10, and the other end is connected to a slider 11. The slider 11 is slidably connected to the first slide groove 5, and the ends of the left and right scissor arms 6 of the scissors fork at the top of the lifting mechanism are hinged to the slider 11. The end of the push rod 9 close to the limit nut 10 is provided with a receiving groove 12 extending along its axis to form a cylindrical structure. When the limit nut 10 moves along the axis of the transmission screw 8, one end of the transmission screw 8 can extend into the receiving groove 12, which makes the entire drive mechanism structure more compact and smaller in size.Among them, the transmission screw 8, the driving gear 13 and the driven gear 14 are enclosed in an outer shell, the driving motor 7 is installed on the outer shell, and its motor shaft is connected to the transmission screw 8 through gear transmission, so that the transmission mechanism can be effectively protected. The push rod 9 extends from one end of the outer shell and is connected to the slider 11. Specifically, a through hole is opened on the side wall of the outer shell near the push rod 9, and the push rod 9 extends into the outer shell through the through hole and is connected to the limit nut 10. During the movement, when the limit nut 10 moves to fit the side wall of the outer shell, it reaches the limit position, which plays a limiting role to prevent the push rod 9 from continuing to extend. At this time, the driving motor 7 is reversed to retract the push rod 9. During use, when the driving motor 7 receives a signal from the elevator control system, it drives the transmission screw 8 to rotate, thereby driving the top rod 9 to move along its axial direction through the limit nut 10, thereby driving the two scissor arms 6 to move away from each other. When moving away, the entire scissor-type lifting mechanism contracts, causing the cleaning device 2 to move upward. When moving closer, the entire scissor-type lifting mechanism extends, causing the cleaning device 2 to move downward, thereby achieving the scraping and cleaning of the side wall of the elevator car 22 by the cleaning brush.

[0036] In order to achieve better cleaning and disinfection, a plurality of detergent nozzles 3 and disinfectant nozzles 4 are also provided on the crossbeam 1, wherein the detergent nozzles 3 are connected to the detergent supply device, and the disinfectant nozzles 4 are connected to the disinfectant supply device, wherein the spraying direction of the detergent nozzles 3 is tilted downward and is directed toward the side wall of the elevator car 22. Specifically, a cleaning hole 15 and a disinfection hole 16 extending along the length direction of the crossbeam 1 are provided inside the side away from the first chute 5, wherein one end of the cleaning hole 15 is closed and the other end is connected to the detergent supply device, and one end of the disinfection hole 16 is closed and the other end is connected to the disinfectant supply device; the detergent nozzles 3 and disinfectant nozzles 4 each include a plurality of them and are provided on the lower side of the crossbeam 1, and the detergent nozzles 3 are communicated with the cleaning holes 15, and the disinfectant nozzles 4 are communicated with the disinfection holes 16. The detergent supply device includes a detergent pool 18, which is connected to the cleaning hole 15 through a pipeline, and the disinfectant supply device includes a disinfectant pool 19, which is connected to the disinfection hole 16 through a pipeline. A pressure pump 20 and a one-way pressure valve 21 are connected in series on the pipeline. In this way, the entire conveying channel of the detergent and disinfectant has good airtightness, and the entire structure is more compact. The detergent nozzle 3 is tilted, and the detergent can be sprayed on the side wall of the elevator car 22, which is convenient for the cleaning device 2 to better clean the side wall. In addition, the disinfectant nozzle 4 is tilted toward the inside of the elevator car 22, and the overall direction is opposite to that of the detergent nozzle 3, so that the disinfectant can be better sprayed into the interior of the elevator car 22, and the disinfection effect is better. At the same time, it can also prevent interference between the two nozzles and improve the use effect. In addition, liquid level monitoring devices are provided in the detergent pool 18 and the disinfectant pool 19. The liquid level monitoring devices include touch switches installed at the bottom of the pools, and floats are provided above the touch switches. The touch switches are connected to the elevator control system. When the float contacts the touch switches, a corresponding signal is sent out to remind the staff to refill.

[0037] In order to further improve the disinfection effect, a mounting groove extending along the length direction of the beam 1 is provided on the lower side thereof, and an ultraviolet lamp 17 is installed in the mounting groove to perform ultraviolet disinfection on the elevator car 22, thereby achieving a better disinfection effect.

[0038] Based on the above cleaning and disinfection device, the present invention further provides an elevator car cleaning and disinfection system, including an elevator car 22 and an elevator control system, wherein a decorative ceiling 23 is provided on the top of the elevator car 22; there is a gap between the surrounding side of the decorative ceiling 23 and the side wall of the elevator car 22, and the cleaning and disinfection device is installed at the top of the elevator car 22 near the side wall, wherein the lower side of the crossbeam 1 is opposite to the gap between the surrounding side of the decorative ceiling 23 and the side wall of the elevator car 22, so that the lifting mechanism, the ultraviolet lamp 17, the detergent nozzle 3 and the disinfectant nozzle 4 are all located in the gap between the decorative ceiling 23 and the side wall of the elevator car 22, and the cleaning brush of the cleaning device 2 is in contact with the side wall of the elevator car 22; an infrared sensing device 24 is also provided in the elevator car 22, and the detection end of the infrared sensing device 24 faces the inside of the elevator car 22;

[0039] The driving motor 7, the ultraviolet lamp 17, the infrared sensing device 24, the pressure pump 20 of the cleaning agent supply device and the disinfectant supply device, and the one-way pressure valve 21 are all connected to the elevator control system.

[0040] Based on the above cleaning and disinfection system, the present invention also provides an elevator car cleaning and disinfection method, including the above elevator car cleaning and disinfection system, including the following steps:

[0041] S1. When the infrared sensing device 24 detects that there are no passengers in the elevator car 22, it transmits a signal to the elevator control system;

[0042] S2, after receiving the signal from the infrared sensor 24, the elevator control system puts the elevator into maintenance state, and sends a working signal to the pressure pump 20 and the one-way pressure valve 21 of the detergent supply device, so that the detergent enters the detergent nozzle 3 through the pipeline and is sprayed out;

[0043] S3, after the detergent nozzle 3 sprays for a preset time, the elevator control system sends a stop signal to the pressure pump 20 and the one-way pressure valve 21 of the detergent supply device, and after receiving the feedback signal that the pressure pump 20 and the one-way pressure valve 21 stop working, the elevator control system sends a working signal to the driving motor 7 of the driving mechanism;

[0044] S4, the driving motor 7 starts after receiving the working signal, drives the transmission screw 8 to rotate, drives the push rod 9 through the limit nut 10 to push the slider 11 to slide along the first slide groove 5, thereby driving the cleaning device to move downward through the scissor assembly. When the limit nut 10 moves to a position that fits the inner wall of the outer shell, the cleaning device 2 moves to the lowest position, and the driving motor 7 reverses to move the cleaning device 2 upward. When the cleaning device 2 reciprocates up and down for a preset number of times, the elevator control system sends a stop signal to the driving motor 7;

[0045] S5, after receiving the feedback signal that the driving motor 7 stops working, the elevator control system sends a working signal to the pressure pump 20 and the one-way pressure valve 21 of the disinfectant supply device, so that the disinfectant enters the disinfectant nozzle 4 through the pipeline and is sprayed out;

[0046] S6, after the disinfectant nozzle 4 sprays for a preset time, the elevator control system sends a stop signal to the pressure pump 20 and the one-way pressure valve 21 of the disinfectant supply device. After receiving the feedback signal that the pressure pump 20 and the one-way pressure valve 21 stop working, the elevator control system restores the elevator to normal use and sends a working signal to the ultraviolet lamp 17;

[0047] S7. After the ultraviolet lamp 17 works for a preset time, the elevator control system sends a stop signal to the ultraviolet lamp 17 to complete the cleaning and disinfection of the elevator car.

[0048] The working process of the present invention is as follows: when the infrared sensing device 24 detects that there are no passengers in the car, the cleaning device is started, and the infrared sensing device 24 transmits a signal to the elevator control system, and the elevator control system controls the elevator to be in a maintenance state; at the same time, a signal is transmitted to the pressure pump 20 on the cleaning side through the detection circuit to control its operation. At this time, the one-way pressure valve 21 works, and the detergent enters the detergent nozzle 3 through the detergent spray pipeline. Since the pressure pump 20 continues to work, the pressure in the pipeline increases, and the detergent forms a spray to spray on the wall of the elevator car 22, and the spraying stops after 2-4 seconds; when the pressure pump 20 stops working, the feedback signal is transmitted to the elevator control system through the detection circuit, and the elevator control system transmits a signal to the drive motor 7 again. At this time, the left and right drive electric drive push rods 9 are pushed toward the middle direction at the same time, driving the slider 11 to slide along the first slide groove 5 of the beam 1; the entire scissor-type lifting mechanism is stretched, thereby pushing the cleaning brush to move from top to bottom until the lowest position. When the electric driving push rod 9 is driven to move to the limit position, the push rod 9 will be immediately retracted in the reverse direction, and the scissor-type lifting mechanism will shrink to move the cleaning brush from bottom to top until it reaches the highest position. In this way, the brush completes the cleaning of the car wall from top to bottom, and the cycle is repeated 3 times for one cleaning. After the completion of 3 cycles, the cleaning of the car wall is completed; the signal of the driving motor 7 to stop working is transmitted through the detection circuit to the pressure pump 20 on the disinfection side to work. At this time, the one-way pressure valve 21 works, and the disinfectant enters the disinfectant nozzle 4 through the disinfectant spray pipeline. As the pressure pump 20 continues to work, the pressure in the pipeline increases, and the disinfectant forms a spray to spray in the car. The spraying stops after 2-3 seconds, and the disinfection of the car disinfectant is completed. When the pressure pump 20 stops working, the feedback signal is sent to the elevator control system through the detection circuit, and the elevator resumes normal use. At the same time, the ultraviolet lamp 17 is turned on (it will automatically turn off after 20 minutes). The whole process is an automatic cleaning and automatic disinfection of the car wall.

[0049] When there are no passengers in the elevator car of the present invention, the intelligent automatic cleaning and disinfection device of the car starts to work, 1. the detergent spray is sprayed out; 2. the brush shear fork arm works to clean the car wall; 3. the disinfection spray is sprayed out, and the elevator is in a maintenance state at this time and cannot be taken (the cleaning and disinfection time lasts for 20 seconds to 30 seconds); after the cleaning and disinfection are completed, after the disinfectant is sprayed, the ultraviolet lamp works (it automatically turns off after 20 minutes), and the elevator returns to normal. At this time, the intelligent automatic cleaning and disinfection device of the car is hidden in the gap between the decorative ceiling and the car wall, and does not affect the overall appearance of the car.

[0050] The present invention mainly comprises four parts: a cleaning brush, a detergent spray, a disinfectant spray, and an ultraviolet lamp. It can conveniently automatically clean and disinfect the car by setting a fixed time. By setting an infrared sensing device, when there are passengers in the car and the elevator is in operation, the intelligent automatic cleaning and disinfection device of the car is not started. After the passengers leave the car, the intelligent automatic cleaning and disinfection device of the car starts to work, and the elevator is in a maintenance state and cannot be taken (the cleaning and disinfection time lasts for 20 seconds to 30 seconds); after cleaning and disinfection, the elevator returns to normal when the ultraviolet lamp is working. By installing the entire device at the spacing position between the decorative ceiling and the side wall of the elevator car, the infrared sensing device is installed on the decorative ceiling to monitor the passengers in the car, and the detergent pool and the disinfectant pool are fixed above the car top to facilitate the addition of detergents and disinfectants. The entire car intelligent automatic cleaning and disinfection device is connected in series with the elevator control system and controlled by the elevator control system, which has the characteristics of low labor cost, time and labor saving, high disinfection efficiency, high safety and high intelligence.

[0051] Although the embodiments of the present invention have been shown and described, it is apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and basis of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Therefore, the embodiments of the present invention are merely illustrative examples of the present invention. The embodiments of the present invention do not constitute limitations on the present invention from any point of view.

Claims

1. An elevator car cleaning and disinfection device, characterized in that: It includes a horizontally arranged crossbeam, a cleaning device is arranged under the crossbeam, the cleaning device is connected to the crossbeam through a lifting mechanism, and the lifting mechanism can drive the cleaning device to move up and down; a plurality of detergent nozzles and disinfectant nozzles are also arranged on the crossbeam; it also includes a detergent supply device and a disinfectant supply device, the detergent nozzle is connected to the detergent supply device, and the disinfectant nozzle is connected to the disinfectant supply device; The cross-sectional shape of the crossbeam is rectangular as a whole, and a first slide groove extending along the length direction of the crossbeam is provided on the lower side of the crossbeam; the lifting mechanism includes multiple groups of scissor fork assemblies and a driving mechanism, and the scissor fork assembly includes two cross-arranged and rotatably connected scissor fork arms, and the scissor fork arms of two adjacent scissor fork assemblies are rotatably connected through a rotating pair; the ends of the two scissor fork arms of the scissor fork assembly located at the top are slidably connected with the first slide groove, and are connected with the driving mechanism, and can move away from or approach each other under the drive of the driving mechanism, and the ends of the two scissor fork arms of the scissor fork assembly located at the bottom are slidably connected with the cleaning device; A driving mechanism is respectively provided at both ends of the cross beam, and the driving mechanism includes an outer shell, a driving motor, a transmission screw and a push rod. The outer shell is installed below the cross beam, and the driving motor is installed on the outer side wall of the outer shell and is connected to the transmission screw arranged in the outer shell through gear transmission. The length direction of the transmission screw is consistent with the length direction of the cross beam. One end of the transmission screw is transmission-connected to the driving motor, and the other end extends out of the outer shell and is connected to the push rod; the push rod is a cylindrical structure, and its open end is inserted into one end of the outer shell from the transmission screw, and is connected to the push rod through a limiting The limiting nut is connected to the transmission screw, and the other end is connected to a slider. Specifically, one end of the push rod close to the limiting nut is provided with a receiving groove extending along its axis to form a cylindrical structure. The limiting nut is threadably connected to the transmission screw and can move along the axis of the transmission screw when the transmission screw rotates. When the limiting nut moves along the axis of the transmission screw, one end of the transmission screw can extend into the receiving groove, and the limiting nut can fit with the inner side wall of the outer shell close to the push rod; the slider is slidably connected to the first sliding groove, and the slider is hinged to the adjacent end of the scissor arm; The cleaning device comprises a cleaning base parallel to the crossbeam, a cleaning brush is provided on one side of the cleaning base along its length direction; a second slide groove is provided on the cleaning base extending along its length direction, and the end of the scissor arm of the scissor assembly of the lifting mechanism located at the bottom is slidably connected with the second slide groove; A mounting groove extending along the length direction of the beam is provided on the lower side of the beam, and an ultraviolet lamp is installed in the mounting groove; The detergent supply device comprises a detergent pool, which is connected to the cleaning hole through a pipeline; the disinfectant supply device comprises a disinfectant pool, which is connected to the disinfection hole through a pipeline; a pressure pump and a one-way pressure valve are connected in series on the pipeline.

2. An elevator car cleaning and disinfection device according to claim 1, characterized in that: A driving gear is installed on the motor shaft of the driving motor, and a driven gear meshing with the driving gear is installed at the end of the transmission screw.

3. An elevator car cleaning and disinfection device according to claim 1, characterized in that: A cleaning hole and a disinfection hole extending along the length direction of the beam are provided inside the side of the beam away from the first slide groove, one end of the cleaning hole is closed, and the other end is connected to the cleaning agent supply device, and one end of the disinfection hole is closed, and the other end is connected to the disinfectant supply device; the cleaning agent nozzle and the disinfectant nozzle each include a plurality of nozzles, which are arranged on the lower side of the beam, and the cleaning agent nozzle is communicated with the cleaning hole, and the disinfectant nozzle is communicated with the disinfection hole.

4. An elevator car cleaning and disinfection system, comprising an elevator car and an elevator control system, wherein a decorative ceiling is provided on the top of the elevator car, and a gap is provided between the surrounding side of the decorative ceiling and the side wall of the elevator car; characterized in that: A cleaning and disinfection device as described in any one of claims 1 to 3 is installed in the gap between the decorative ceiling and the two side walls and the rear side wall of the elevator car, wherein the crossbeam is fixedly connected to the top of the car, the lifting mechanism, the ultraviolet lamp, the cleaning agent nozzle and the disinfectant nozzle can be moved down from the gap between the decorative ceiling and the side wall of the elevator car, and the cleaning brush of the cleaning device can fit the side wall of the elevator car; An infrared sensing device is also provided in the elevator car, and a detection end of the infrared sensing device faces the elevator car; The detergent supply device and the disinfectant supply device are located on the top of the car, and the drive motor, the ultraviolet lamp, the infrared sensing device, the detergent supply device and the disinfectant supply device are all connected to the elevator control system.

5. A method for cleaning and disinfecting an elevator car, comprising the elevator car cleaning and disinfecting system according to claim 4, characterized in that: The following steps are included: S1. When the infrared sensing device detects that there are no passengers in the elevator car, it transmits a signal to the elevator control system; S2. After receiving the signal from the infrared sensor, the elevator control system puts the elevator into maintenance mode and sends a working signal to the pressure pump and the one-way pressure valve of the detergent supply device, so that the detergent enters the detergent nozzle through the pipeline and is sprayed out; S3, after the detergent nozzle sprays for a preset time, the elevator control system sends a stop signal to the detergent supply device, the pressure pump and the one-way pressure valve, and after receiving the feedback signal that the pressure pump and the one-way pressure valve stop working, the elevator control system sends a working signal to the driving motor of the driving mechanism; S4, the driving motor starts after receiving the working signal, drives the transmission screw to rotate, drives the push rod to push the slider to slide along the first slide groove through the limit nut, thereby driving the cleaning device to move downward through the scissor assembly. When the limit nut moves to a position that fits the inner wall of the outer shell, the cleaning device moves to the lowest position, and the driving motor reverses to move the cleaning device upward. When the cleaning device reciprocates up and down for a preset number of times, the elevator control system sends a stop signal to the driving motor; S5. After receiving the feedback signal that the driving motor stops working, the elevator control system sends a working signal to the pressure pump and the one-way pressure valve of the disinfectant supply device, so that the disinfectant enters the disinfectant nozzle through the pipeline and is sprayed out; S6. After the disinfectant nozzle sprays for a preset time, the elevator control system sends a stop signal to the pressure pump and the one-way pressure valve of the disinfectant supply device. After receiving the feedback signal that the pressure pump and the one-way pressure valve stop working, the elevator control system restores the elevator to normal use and sends a working signal to the ultraviolet lamp. S7. After the ultraviolet lamp works for a preset time, the elevator control system sends a stop signal to the ultraviolet lamp to complete the cleaning and disinfection of the elevator car.

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