Elevator car-landing door gap detection structure
By installing a sliding ruler structure with a magnetic base and a laser on the elevator car, the cumbersome and safety hazards of elevator car-landing door gap detection are solved, enabling a single person to perform an efficient and safe detection process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-10
AI Technical Summary
The current method of detecting the gap between the elevator car and the landing door requires frequent stops for alignment, which is cumbersome and poses safety hazards.
The sliding ruler and laser device are mounted on a magnetic base. The laser aligns the object to be detected, and the car can stop at the normal passenger boarding and alighting position. The detection can be completed by a single person. The sliding ruler does not need to be adjusted after one calibration. The gap is read by a distance sensor.
It enables rapid detection by a single person, avoiding frequent elevator stops and door openings and closings, thus improving detection efficiency and safety.
Smart Images
Figure CN223983300U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of elevator testing technology, and in particular relates to a structure for detecting the gap between the elevator car and the landing door. Background Technology
[0002] Elevators are common equipment in high-rise buildings. They carry passengers vertically between different floors via a car. Each floor has a landing door; when the landing door and the car door are aligned, passengers can enter and exit the car. The clearance between the elevator car and the landing door is subject to strict regulations to ensure safe operation.
[0003] Elevator facilities require regular inspections. During elevator inspections, it is necessary to randomly check and measure the gaps between the landing door ball and the car door sill, as well as the gaps between the car door knife and the landing door sill. Since the landing door ball is located on the top of the landing door, while the car door sill is located on the bottom of the car door; and the car door knife is located on the top of the car door, while the landing door sill is located on the bottom of the landing door, the traditional inspection method is as follows: the elevator is stopped carrying passengers. One inspector operates the elevator at low speed from the top of the car to control the opening and closing of the car door, while another inspector is inside the car. To measure the gap between the landing door ball and the car door sill, the elevator car is moved to a position where the car door sill is level with the landing door ball. Then, the inspector on the top of the car stops the elevator and opens the car door, while the inspector inside the car uses a measuring steel ruler to measure the gap. To measure the gap between the car door knife and the landing door sill, the elevator car is moved to a position where the car door knife is level with the landing door sill. Then, the inspector on the top of the car stops the elevator and opens the car door, while the inspector inside the car uses a measuring steel ruler to measure the gap. The entire testing process requires stopping the elevator two or more times to align the positions on each floor, and repeatedly opening and closing the doors. This not only makes the measurement very inconvenient, but also poses certain safety hazards, placing high demands on the testing personnel. Utility Model Content
[0004] The purpose of this invention is to solve the problem that existing elevator car-landing door gap detection requires stopping the elevator in unconventional positions, repeatedly stopping and opening the door, which is cumbersome, inconvenient, and poses safety hazards. The invention provides an elevator car-landing door gap detection structure that allows a single person, including a person on the car top, to complete the detection. The elevator can stop at the normal passenger boarding / alighting position, i.e., the car door and landing door are aligned, eliminating the need for multiple stops for alignment, making the detection convenient and fast.
[0005] The technical solution adopted by this utility model to solve its technical problem is: an elevator car-landing door gap detection structure, wherein the elevator car is provided with a car door, and the building floors are provided with landing doors corresponding to the car door. The upper and lower sides of the car door are respectively a car door upper sill and a car door lower sill. A car door door knife is provided on the side of the car door upper sill facing the landing door. The upper and lower sides of the landing door are respectively a landing door upper sill and a landing door lower sill. A landing door ball is provided on the side of the landing door upper sill facing the car. A gap detection device is provided at the car door upper sill. The gap detection device includes a magnetic base that is attracted to the upper side of the car door upper sill. The magnetic base is hinged with a sliding ruler that can swing up and down. A first slider and a second slider are slidably provided on the sliding ruler. A laser is provided on the bottom surface of the first slider and the second slider. A distance measuring sensor is provided on the opposite side of the first slider and the second slider. In the detection state, the car door and the landing door are aligned and stopped. The sliding ruler swings to a horizontal position. The laser of the first slider aligns with the detection object on the car. The laser of the second slider aligns with the detection object on the landing door of the corresponding floor.
[0006] This device uses a laser emitted from a laser beam to remotely align the test point of the object being tested. This allows the elevator car to stop at a position aligned with the landing door for testing. The car's alignment with the landing door can be directly achieved by the elevator's existing positioning device, eliminating the need for manual staggered stopping. Each floor only requires one stop for testing. The gap detection device is installed on the top sill of the car door via a magnetic base, allowing a single inspector to perform the test from the car top without frequent opening and closing of the car door. During testing, the sliding ruler is swung to a horizontal position. Since the first slider on the sliding ruler is calibrated with the structure on the car once and requires no secondary adjustment, it is only necessary to align the laser emitted by the second slider with the corresponding test object on the current landing door. Then, the distance measured by the distance sensor is read to complete the gap detection for the current floor. When the elevator car descends, the sliding ruler is swung back to a vertical position to avoid collision and interference with the landing door structure.
[0007] Preferably, the gap detection device includes a first gap detection device for detecting the gap between the landing door ball and the car door sill. The laser of the laser of the first slider of the first gap detection device is flush with the car door sill, and the laser of the laser of the second slider of the first gap detection device is adjusted and aligned with the corresponding landing door ball when detecting each floor.
[0008] Preferably, the gap detection device includes a second gap detection device for detecting the car door knife and the landing door sill. The laser of the laser of the first slider of the second gap detection device is flush with the car door knife, and the laser of the laser of the second slider of the second gap detection device is adjusted and aligned with the corresponding landing door sill when detecting each floor.
[0009] Preferably, the first slider and the second slider are each provided with a fastening screw. The first slider and the second slider can be locked onto the slide rail by the fastening screw to prevent positional displacement during swinging.
[0010] Preferably, the swing angle of the sliding ruler is not less than 90 degrees and not more than 180 degrees, and the extreme position of the sliding ruler swinging toward the door side is a horizontal position.
[0011] Preferably, the magnetic base is provided with an upper limit block and a lower limit block to limit the swing angle of the slider.
[0012] This invention allows a single inspector to complete the gap inspection work, and the car does not need to be manually stopped at different floors or the car door needs to be opened and closed frequently, resulting in high inspection efficiency and a safer inspection process. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] Figure 1 This is a structural diagram of the adjacent surfaces of a car door and a landing door.
[0015] Figure 2 This is a schematic diagram of the traditional gap detection and stopping position between the car door sill and the landing door.
[0016] Figure 3 This is a schematic diagram of the traditional gap detection and stopping position of the car door door knife and the landing door sill.
[0017] Figure 4 This is a schematic diagram of a detection structure according to the present invention.
[0018] Figure 5 This is a schematic diagram of the horizontal state of a gap detection device according to this utility model.
[0019] Figure 6 This is a schematic diagram of the upper swing state of a gap detection device according to this utility model.
[0020] In the diagram: 1. Car door, 2. Car door upper sill, 3. Car door lower sill, 4. Car door door knife, 5. Car door foot guard, 6. Landing door, 7. Landing door upper sill, 8. Landing door lower sill, 9. Landing door ball, 10. Gap detection device, 11. Magnetic base, 12. First slider, 13. Second slider, 14. Laser, 15. Distance sensor, 16. Fastening screw, 17. Sliding ruler, 18. Lower limit block, 19. Upper limit block. Detailed Implementation
[0021] The present invention will be further described below with reference to specific embodiments and accompanying drawings.
[0022] Example: A structure for detecting the gap between an elevator car and the landing door, such as... Figure 1 , 4 As shown. The elevator car is equipped with a car door 1, and the building floors are equipped with landing doors 6 corresponding to the car doors. The upper and lower sides of the car door are a car door sill 2 and a car door floor sill 3, respectively. A car door door knife 4 is installed on the side of the car door sill facing the landing door, and a car door foot guard 5 is installed below the car door floor sill 3. The upper and lower sides of the landing door 6 are a landing door sill 7 and a landing door floor sill 8, respectively. A landing door ball 9 is installed on the side of the landing door sill facing the car, and a landing door foot guard 9 is also installed below the landing door floor sill 8.
[0023] The traditional car-landing door detection method is as follows: Figure 2 As shown, when measuring the gap between the landing door ball bearing 9 and the car door sill 3, the elevator car is opened to a position where the car door sill is flush with the landing door ball bearing. The inspector on the car top stops the elevator and opens the car door, while the inspector inside the car uses a measuring steel ruler to measure the gap. Figure 3 As shown, when measuring the gap between the car door blade 4 and the landing sill 8, the elevator car is opened to the position where the car door blade and the landing sill are aligned. Then, the inspector on the car top stops the elevator and opens the car door, while the inspector inside the car uses a measuring steel ruler to measure the gap. The car and landing door need to stop at least twice at different floors, and the car door needs to be opened and closed frequently for manual measurement.
[0024] The detection structure of this device is as follows: Figure 4 As shown, a gap detection device 10 is installed at the upper sill 2 of the car door. (As indicated...) Figure 5 , 6 As shown, the gap detection device includes a magnetic base 11 that is attached to the upper side of the car door sill. The magnetic base 11 is hinged with a sliding ruler 17 that can swing up and down. A first slider 12 and a second slider 13 are slidably mounted on the sliding ruler 17. A laser 14 is mounted on the bottom surface of the first slider 12 and the second slider 13. A distance sensor 15 is aligned with the opposite sides of the first and second sliders. Fastening screws 16 are respectively mounted on the first and second sliders. In the detection state, the car door is aligned with the landing door and stopped. The sliding ruler swings to a horizontal position, aligning the laser of the first slider with the object being detected on the car, and the laser of the second slider with the object being detected on the landing door of the corresponding floor. Specifically, two gap detection devices 10 are installed at the upper sill 2 of the car door. One device detects the gap between the landing door ball and the car door sill. The laser beam of the first slider 12 of the first gap detection device is flush with the car door sill 3. The laser beam of the second slider of the first gap detection device is adjusted and aligned with the corresponding landing door ball 9 during each floor detection. The other device detects the gap between the car door knife and the landing door sill. The laser beam of the first slider of the second gap detection device is flush with the car door knife 4. The laser beam of the second slider of the second gap detection device is adjusted and aligned with the corresponding landing door sill 8 during each floor detection.
[0025] like Figure 5 , 6 As shown, the magnetic base 11 is provided with an upper limit block 19 and a lower limit block 18 to limit the swing angle of the slider. The limit position of the slider swinging towards the door is a horizontal position, which is limited by the lower limit block 18; the limit angle of the slider swinging upward is 135°, which is limited by the upper limit block 19.
[0026] This device uses a laser emitted from a laser beam to remotely align the test point of the object being tested. This allows the elevator car to stop at a position aligned with the landing door for testing. The car's alignment with the landing door can be directly achieved by the elevator's existing positioning device, eliminating the need for manual staggered stopping. Each floor only requires one stop for testing. The gap detection device is installed on the top sill of the car door via a magnetic base, allowing a single inspector to perform the test from the car top without frequent opening and closing of the car door. During testing, the sliding ruler is swung to a horizontal position. Since the first slider on the sliding ruler is calibrated with the structure on the car once and requires no secondary adjustment, it is only necessary to align the laser emitted by the second slider with the corresponding test object on the current landing door. Then, the distance measured by the distance sensor is read to complete the gap detection for the current floor. When the elevator car descends, the sliding ruler is swung back to a vertical position to avoid collision and interference with the landing door structure.
Claims
1. An elevator car - landing door gap detection structure, an elevator car is provided with a car door, a building floor is provided with a landing door corresponding to the car door, the upper and lower sides of the car door are respectively a car door upper sill and a car door lower sill, a car door door blade is arranged on the side of the car door upper sill facing the landing door, the upper and lower sides of the landing door are respectively a landing door upper sill and a landing door lower sill, and a landing door door ball is arranged on the side of the landing door upper sill facing the car, characterized in that: The gap detection device is arranged at the upper sill of the car door, and comprises a magnetic base arranged on the upper side of the upper sill of the car door, wherein the magnetic base is hingedly provided with a slide ruler capable of swinging up and down, the slide ruler is slidably provided with a first slide block and a second slide block, the bottom surface of each of the first slide block and the second slide block is provided with a laser laser, and the opposite side surface of each of the first slide block and the second slide block is aligned with a distance sensor; when the detection state is reached, the car door is aligned and stopped at the landing door, the slide ruler is swung to a horizontal position, the laser of the laser laser of the first slide block is aligned with a detection object on the car, and the laser of the laser laser of the second slide block is aligned with a detection object on the landing door of the corresponding floor.
2. An elevator car-landing door gap detection structure according to claim 1, characterized in that: The gap detection device comprises a first gap detection device for detecting the landing door ball and the car door sill, the laser of the laser laser of the first slide block of the first gap detection device is flush with the car door sill, and the laser of the laser laser of the second slide block of the first gap detection device is adjusted to be aligned with the landing door ball at each floor detection.
3. An elevator car - landing door gap detection structure according to claim 1 or 2, characterized in that: The gap detection device comprises a second gap detection device for detecting the car door knife and the landing door sill, the laser of the laser laser of the first slide block of the second gap detection device is flush with the car door knife, and the laser of the laser laser of the second slide block of the second gap detection device is adjusted to be aligned with the landing door sill at each floor detection.
4. An elevator car-landing door gap detection arrangement according to claim 1, characterized in that: The first slide block and the second slide block are respectively provided with fastening screws.
5. An elevator car-landing door gap detection arrangement according to claim 1, characterized in that: The swing angle of the slide ruler is not less than 90 degrees and not more than 180 degrees, and the limit position of the slide ruler swinging towards the landing door side is a horizontal position.
6. An elevator car-landing door gap detection structure according to claim 5, characterized in that: The magnetic base is provided with an upper limit block and a lower limit block for limiting the swing angle of the slide ruler. The magnetic base is provided with an upper limit block and a lower limit block for limiting the swing angle of the slide ruler.