Elevator car top system and control system for monitoring the open state of the elevator car top

Abstract

According to an exemplary embodiment, an elevator car top system is provided for monitoring the safety of a service lane located above an elevator car top. The elevator car top system can monitor changes in the open state of the elevator car top. The position of a plurality of top plates can indicate when the elevator car top is partially open, fully open, or fully closed. The position of the top plates can cause at least one sensor of the elevator car top system to provide a signal to a control system of the elevator. Furthermore, the elevator car top system can detect whether there is an object on the top. Based on the object detected on the top, the elevator car top system can provide at least one signal to enable control of the operation of the elevator.

Description

Technical Field

[0001] Various exemplary embodiments generally relate to the field of security systems. In particular, some exemplary embodiments relate to monitoring the opening of service passages on the top of an elevator car and detecting objects on the top of the elevator car. Background Technology

[0002] In elevators with no or low headroom, the height of the shaft means that people or objects on top of the elevator car could be crushed when the elevator car approaches the top floor. For the overall safety of such elevators, it is essential to monitor the elevator car top for any undesirable presence during operation. One way to provide the necessary safety or refuge space for elevator maintenance operations (such as repair and inspection of components in the elevator shaft) is to establish it within the elevator car. This can be achieved, for example, through an open car ceiling and top, floor, or walls, or through an open car door. In this case, the permanent natural refuge space is at least partially located within the elevator car. In the above application, car inspection drives can be performed from inside the elevator car by using the open car top as a service passage to the elevator shaft above the car. Summary of the Invention

[0003] This summary is provided to introduce, in a simplified form, some concepts that will be further described in the following detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to limit the scope of the claimed subject matter.

[0004] An exemplary embodiment provides an elevator car top system for providing a safe and easy access for elevator maintenance by monitoring the open state of the elevator car top. In the exemplary embodiment, the elevator car top system enables the detection of objects on the elevator car top to further enhance safety.

[0005] According to a first aspect, an elevator car top system is provided. The elevator car top system includes a plurality of movable top panels forming an elevator car top, and at least one sensor configured to indicate the position of the top panels and detect an object on the at least one top panel. The position of the top panels includes at least a first state, a second state, and a third state, wherein in the first state the top is completely closed, in the second state the top is completely open, and in the third state the top is partially open. The at least one sensor is configured to enable normal elevator operation only in the first state when no object is detected on the top panel, the at least one sensor is configured to disable any elevator operation in the third state or when an object is detected on the top panel, and the at least one sensor is configured to enable elevator inspection drive only in the second state.

[0006] In an exemplary embodiment, the top portion opens when at least one top plate has rotated away from the plane of the elevator car top plate relative to the longitudinal axis of the top plate.

[0007] In an exemplary embodiment, the top is fully opened when all the top plates rotate relative to the longitudinal axis of the top plates away from the plane of the elevator car top and move to one side of the opening in the elevator car top.

[0008] In an exemplary embodiment, the top is completely closed when the top plates are positioned side-by-side on the same plane to cover the entire area of ​​the elevator car top opening.

[0009] In an exemplary embodiment, at least one sensor includes a first sensor, a second sensor, and a third sensor, and the system further includes a frame on top of an elevator car; a first folding rod is movably connected to one side of the frame, and a second folding rod is movably connected to the side of the frame opposite to the first folding rod. The first folding rod is configured to trigger at least one of the first and second sensors, and the second folding rod is configured to trigger the third sensor.

[0010] In an exemplary embodiment, in a first state and when weight is applied to any top plate, the first folding bar is configured to trigger the first sensor.

[0011] In an exemplary embodiment, in the third state, the first folding rod is configured to trigger the first sensor and the second sensor.

[0012] In an exemplary embodiment, in the second state, the second folding lever is configured to trigger a third sensor to override the first and second sensors, thereby enabling inspection drive.

[0013] In an exemplary embodiment, the system further includes at least one actuating member associated with each top plate, the actuating member being arranged to face the first folding rod, and wherein, when weight is applied in the first state, at least one actuating member is configured to move the first folding rod, and in response to the movement, the first folding rod is configured to trigger a first sensor.

[0014] In an exemplary embodiment, the first folding bar extends along the entire side of the frame.

[0015] In an exemplary embodiment, the second folding rod extends only partially along the side of the frame.

[0016] According to a second aspect, a control system for an elevator is provided. The control system is configured to receive at least one signal from at least one sensor of the elevator car top system of the first aspect or any exemplary embodiment thereof, and to control the operation of the elevator based on the at least one signal.

[0017] According to a third aspect, an elevator is provided, which includes the elevator car top system of the first aspect and the control system of the second aspect.

[0018] Many of the additional features will be better understood by referring to the following detailed description taken in conjunction with the accompanying drawings, as they will become easier to comprehend. Attached Figure Description

[0019] The accompanying drawings, which provide a further understanding of exemplary embodiments and form part of this specification, illustrate exemplary embodiments and, together with the description, aid in understanding them. In the drawings:

[0020] Figure 1 A schematic diagram of a control system for an elevator, including an elevator car top system, is shown according to an exemplary embodiment.

[0021] Figure 2A A schematic diagram of an elevator service passage when the elevator car top is completely closed, according to an exemplary embodiment, is shown.

[0022] Figure 2B A schematic diagram of an elevator service passage with the elevator car top fully open, according to an exemplary embodiment, is shown.

[0023] Figure 2C A schematic diagram of an elevator service passage when an object is present on the top of the elevator car, according to an exemplary embodiment, is shown.

[0024] Figure 2D A schematic diagram of an elevator service passage when the top portion of the elevator car is opened, according to an exemplary embodiment, is shown.

[0025] Figure 3 A schematic diagram of an elevator service passage depicted from an inclined angle, according to an exemplary embodiment, is shown.

[0026] Figure 4 A schematic diagram of a monitoring mechanism for an elevator car top system according to an exemplary embodiment is shown.

[0027] Figure 5 A schematic diagram of a top plate including a device for object detection according to an exemplary embodiment is shown.

[0028] Figure 6A A schematic cross-section of an elevator car top system is shown according to an exemplary embodiment when the elevator car top is fully closed.

[0029] Figure 6B A schematic diagram of an elevator car top system depicted from above when the elevator car top is fully closed, according to an exemplary embodiment, is shown.

[0030] Figure 6C A schematic cross-section of an elevator car top system is shown according to an exemplary embodiment when the elevator car top is fully open.

[0031] Figure 6D A schematic diagram of an elevator car top system depicted from above when the elevator car top is fully open, according to an exemplary embodiment, is shown.

[0032] Figures 7A to 7D A schematic diagram is shown of a sequence for detecting objects and monitoring the open state of the elevator car top in an elevator car top system, according to an exemplary embodiment.

[0033] Figure 8A A schematic diagram of a first folding lever in a first position when the elevator car top is fully closed, according to an exemplary embodiment, is shown.

[0034] Figure 8B A schematic diagram of a first folding rod in an intermediate position when an object is present on top of an elevator car, according to an exemplary embodiment, is shown.

[0035] Figure 8C A schematic diagram of a first folding rod in a second position when the top of the elevator car is at least partially opened, according to an exemplary embodiment, is shown.

[0036] Figure 8D A schematic diagram of a second folding lever in a first position when the elevator car top is fully opened, according to an exemplary embodiment, is shown.

[0037] Figure 8E A schematic diagram of a second folding lever in a second position when the elevator car top is fully opened, according to an exemplary embodiment, is shown.

[0038] Figure 9 A schematic diagram of a monitoring mechanism for an elevator car top system according to another exemplary embodiment is shown.

[0039] In the accompanying drawings, similar reference numerals are used to indicate similar parts. Detailed Implementation

[0040] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. The detailed description provided below, in conjunction with the drawings, is intended as a description of the present example and is not intended to represent the only form in which the present example can be constructed or utilized. The description illustrates the function of the example and the sequence of steps for constructing and operating the example. However, the same or equivalent functions and sequences can be achieved through different examples.

[0041] According to an exemplary embodiment, an elevator car top system is provided for monitoring the safety of a service passage located above the elevator car top. The elevator car top system can monitor changes in the opening state of the elevator car top. The positions of multiple top panels can indicate when the elevator car top is partially open, fully open, or fully closed. The position of the top panels can cause at least one sensor of the elevator car top system to provide a signal to the elevator's control system. Furthermore, the elevator car top system can detect the presence of an object on top. Based on the detected object on top, the elevator car top system can provide at least one signal to enable control of the elevator's operation. The elevator car top system can, for example, enable or disable normal elevator operation, or enable or disable checks performed on the elevator.

[0042] The monitoring system can include multiple top panels within a frame on the elevator car top. When the top panels are closed, they form a platform on top of the elevator car, i.e., at the very top of the elevator car roof. The top panels can be separate or connected and can be moved so that they are retractable or foldable at one end or side of the frame of the elevator car top. Therefore, the elevator car top can be fully opened to provide a service passage from the inside of the elevator car. Furthermore, the retraction or folding of the top panels on one side ensures that the view of the elevator shaft is not obstructed when the top is open. The elevator can only operate normally when the elevator car top is fully closed and there are no objects on the elevator car top. Inspection drive is only activated when the elevator car top is fully open. This can be achieved by monitoring the opening status of the top panels and the elevator car top separately. For enhanced safety, the elevator car top system can also detect objects on the top panels and restrict elevator operation in response to the detection of an object on at least one panel. This solution provides a safe and functional service passage from the elevator car to the shaft.

[0043] Figure 1 A schematic diagram of a control system 104 of an elevator system including an elevator car top system 100 according to an embodiment is shown. Although the control system 104 is shown as a single device, it should be understood that, where applicable, the functions of the control system 104 can be distributed among multiple devices.

[0044] The control system 104 may include a control unit 101, such as an elevator controller. The control unit 101 may include at least one processor, such as one or more of various processing devices, such as a coprocessor, microprocessor, controller, programmable logic controller (PLC), digital signal processor (DSP), processing circuitry with or without an accompanying DSP, or various other processing devices, including integrated circuits such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), microcontroller units (MCUs), hardware accelerators, dedicated computer chips, etc.

[0045] The control unit 101 may further include at least one memory. The memory may be configured to store, for example, computer program code, such as operating system software and application software. The memory may include one or more volatile storage devices, one or more non-volatile storage devices, and / or combinations thereof. For example, the memory may be embodied as a magnetic storage device (e.g., hard disk drive, magnetic tape, etc.), an optical storage device, or a semiconductor memory (e.g., mask ROM, PROM (programmable ROM), EPROM (erasable PROM), flash ROM, RAM (random access memory), etc.).

[0046] The control system 104 may include an elevator car top system 100. The elevator car top system 100 may include an electrical safety control interface 103 configured to provide signals to a control unit 101. The electrical safety control interface 103 may include, for example, one or more sensors or switches connected to the control unit 101. The electrical safety control interface 103 may further include one or more safety input modules configured to detect safety-related switching states of sensors, such as position switches, safety contacts, magnetic switches, roll-on safety switches, etc. In an exemplary embodiment, the safety input module may include instructions to open and close outputs based on input conditions and internal programs. These instructions may be stored, for example, on a PLC configured in the safety input module. Alternatively, the safety input module may provide output signals to a separate controller, for example, the control unit 101, based on input conditions. In an embodiment, the control unit 101 may be integrated into one or more safety input modules. The electrical safety control interface 103 may further include a communication interface configured to enable the elevator car top system 100 to send and / or receive information to / from other devices, such as service or maintenance facilities.

[0047] The elevator car top system 100 may further include a control mechanism 102 configured to trigger input signals to the control unit 101 via an electrical safety control interface 103. The control mechanism 102 may include one or more levers, for example, configured to trigger one or more sensors. For example, the levers may be configured to change the state of at least one switch in response to a change in the position of one or more levers. The control mechanism 102 may further include multiple panels, such as folding panels, hinged swing plates, and / or floating plates. In an exemplary embodiment, the top plates are movably coupled as separate plates within the frame of the elevator car top. In another exemplary embodiment, the top plates may be interconnected. The top plates may be associated with at least one sensor such that a change in the position of the top plate causes a change in the sensor state. Each top plate may be configured to be horizontally and vertically movable or pivotable. In an exemplary embodiment, one or more levers may be configured to be operatively coupled to the top plates. A change in the position of the top plates may move one or more levers. The elevator car top system 100 may further include one or more springs coupled to one or more levers and / or plates for holding and / or returning one or more levers and / or plates to a default position.

[0048] The functions described herein can be performed at least in part by one or more computer program product components (e.g., software components). According to an embodiment, the elevator car top system includes a processor or processor circuitry, such as a microcontroller, configured by program code when executed to perform embodiments of the described operations and functions. Alternatively or additionally, the functions described herein can be performed at least in part by one or more hardware logic components. Exemplary types of hardware logic components that can be used, such as but not limited to, include field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), complex programmable logic devices (CPLDs), and graphics processing units (GPUs).

[0049] Figure 2A A schematic diagram of an elevator service passage when the elevator car top is completely closed, according to an exemplary embodiment, is shown.

[0050] Elevator car 201 may include a car ceiling 202 that opens inside the elevator car 201. The elevator car top may include a plurality of individually movable top panels 200 within a frame at the top of the elevator car. In another exemplary embodiment, the top panels may be interconnected. The plurality of top panels 200 may fill the frame such that they form a uniform surface within the frame. The plurality of top panels 200 may form the outer surface of the elevator car top, which may be used for service passages. A work platform 203 for service and inspection purposes may be stored inside the elevator car top, between the car ceiling 202 and the plurality of top panels 200. When the service passage located at the top is closed, maintenance personnel 206 may work, for example, on the landing door component 205 through the open car door. Elevator car 201 may also include a car connection plate 207. The car connection plate 207 may provide interfaces for internal and external input / output. For example, the car connection plate 207 may connect input signals from sensors coupled to the elevator car top components 202, 200 and the elevator control unit. The inspection drive unit 204 can be connected to the car connection plate 207 by maintenance personnel 206 to receive information about the elevator's status and activate the elevator's inspection mode. Normal operation of the elevator is permitted when the service passage on the top of the elevator car is completely closed.

[0051] Figure 2B This illustrates an example of an elevator car when the top is fully open. Figure 2A A schematic diagram of an elevator service passage. Multiple top panels 200 can be moved individually or connected to each other and are stowed or folded on one side of the elevator car top opening to allow maintenance personnel 206 to open the elevator car top and form a service passage open to the shaft. When the top panels are removed from the plane of the frame, they can be in an open position, preferably orthogonal to the plane of the frame. In the orthogonal position, the top panels can be stored in a smaller space, adjacent to each other and close to one end of the frame. A work platform 203 can be folded down from the elevator car top to provide a standing platform for maintenance personnel 206. The elevator car top service passage allows for maintenance work on the shaft components 208 located above the elevator car 201. Shaft components 208 may include, for example, a motor and elevator counterweight.

[0052] Stacking the top plate 200 on one end of the elevator car top frame allows for refuge space to be provided to maintenance personnel 206 within the elevator car 201. Furthermore, compared to an arrangement with a top that rises upwards outside the elevator car 201, an arrangement with the top plate 200 retracted to the side can, for example, provide a wider service passage. Retracting the top plate 200 to the side further mitigates safety risks, as the visibility of the shaft is not obstructed by the top components raised to the outside of the elevator car 201. Good visibility of the elevator shaft is important during upward travel in inspection drive mode. Moreover, maintenance and inspection operations can be performed more easily compared to solutions that raise the elevator car top. For example, by sliding and retracting the elevator car top to one side, maintenance personnel can replace ropes and machinery located on the top of the car with less effort compared to raising the elevator car top. With a raised top, replacement operations would be time-consuming because the top needs to be completely removed before replacement can be completed. Furthermore, maintenance of the landing door components 205 can be performed through the top service passage instead of through the open elevator doors.

[0053] Normal operation of the elevator can be disabled when the inner ceiling 202 and the outer elevator car top are fully opened by retracting the top plate 200 to the side. Maintenance personnel 206 can switch the inspection mode from the engaged inspection drive unit 204, and the control unit can allow the inspection drive via the car connection plate 207 after detecting that the elevator car top is fully open.

[0054] Figure 2C and 2D It shows what happens when the top part of the elevator car is opened. Figure 2A and 2B Elevator 201.

[0055] exist Figure 2C In this configuration, a maintenance worker 206 stands on the partially closed elevator car top of the car top plate 200A, which is in a closed position within the plane of the car top frame. One or more of the top plates 200B are in an open position retracted at one end of the frame. If the elevator 201 moves with someone on top, there is a risk of being crushed due to insufficient free space above the elevator car. To ensure safety, plates 200A and 200B may include elements that enable the detection of objects on the top plates. These elements may be configured to trigger a signal to the car connection plate 207, notifying the detected object.

[0056] The control unit further ensures that inspection or service drives are only permitted when there is sufficient refuge space for maintenance personnel. Therefore, the control signal allowing an inspection drive is only triggered when all boards 200A and 200B are in the open position and folded to the side at the same end of the frame. Figure 2DIn the middle, maintenance worker 206 is working through a narrow opening because the elevator car top is not fully open. Due to the inconvenient work space, it may not be easy to obtain refuge space, so the inspection drive is disabled for safety reasons.

[0057] Figure 3 A schematic diagram of an elevator service passage depicted from an oblique angle, according to an exemplary embodiment, is shown when the elevator car top is fully open. The elevator service passage may include a plurality of top panels 300 within an elevator car top frame 301. The dimensions of the top panels 300 may correspond to the width of the frame 301 and to the length of the frame 301 divided by the number of panels 300. A slide rail 304 may be connected to both sides of the frame 301. The slide rail 304 may be constructed on any opposite side of the frame 301. The top panels 300 may be movable along the slide rail 304. The top panels 300 may be further movable relative to their longitudinal axis. Each top panel 300 may be orthogonally rotated relative to the plane of the frame and slide to one end of the frame. When the plurality of top panels 300 are stowed aside at one end of the frame 301, an elevator service passage is provided for a maintenance personnel 302. The maintenance personnel 302 may easily perform maintenance operations, for example, by standing on a work platform 303 via the fully open top panels.

[0058] Figure 4 A schematic diagram of a monitoring mechanism for an elevator car top system 400 according to an exemplary embodiment is shown. The elevator car top system 400 can provide an integrated and combined system for monitoring the opening of the top and detecting people on the top of the car. The elevator car top system 400 can be used, for example, in NHR (no headroom) elevator applications. Object detection and monitoring of the opening state of the elevator car top can be combined into the same mechanism as described above.

[0059] The elevator car top system 400 may include a frame 401. The elevator car top system 400 may also include a plurality of movable top panels 402, 403, 405 within the frame 401. In another exemplary embodiment, the top panels may be interconnected. The top panels 402, 403, 405 may be supported by slide rails on opposite sides of the frame 401. When all the top panels 402, 403, 405 are placed side-by-side in the plane of the elevator car top frame 401, the elevator car top is fully closed. When the elevator car top is fully closed, the plurality of top panels 402, 403, 405 completely fill the frame 401. The elevator car top can be opened by sliding the top panels 402, 403, 405 to one side of the frame 401 and retracting the top panels to the same side. The top panels 402, 403, 405 are pivotable about their longitudinal axis, allowing them to be retracted into a relatively small space relative to the space available in their sliding direction.

[0060] Top panels 402, 403, and 405 may have a rectangular shape, with relatively thin side surfaces and relatively wide top and bottom surfaces. The top panels may be in a closed position when the top or bottom surface of the top panel is in the frame plane of the elevator car top. The top panels may be in an open position when the top and bottom surfaces of the top panel rotate about the longitudinal axis of the top panel within the frame from the plane of frame 401.

[0061] The elevator car top system 400 may include a first folding rod 409 constructed beneath top panels 402, 403, and 405. The first folding rod 409 may be, for example, a longitudinally folding rod plate. The first folding rod 409 may be attached to one side of the frame 401. Top panels 402, 403, and 405 may be attached from one end to the same side of the frame 401 as the first folding rod 409. The length of the first folding rod 409 may correspond to the length of the frame 401 to the side to which it is attached. Therefore, the length of the first folding rod 409 may be sufficient to trigger at least one sensor 404, 407 in response to tilting of at least one of the top panels 402, 403, and 405 or folding of the multiple top panels. Tilting or folding at least one top panel away from the plane of the frame 401 may simultaneously push the first folding rod 409 downward. The top panel may push the first folding rod 409 from a first position to a second position, which may result in the triggering of the open state sensor 407. In response to the triggering of the open state sensor 407, operation of the elevator may be disabled.

[0062] In an exemplary embodiment, each top plate 402, 403, 405 may include one or more elements capable of object detection on one or more top plates.

[0063] exist Figure 5The image shows an exemplary top plate 500 of an elevator car top system 400 from a side view. The side view shows the short end of the top plate 500, which is connected to the same side of the frame 401 as the first folding rod 409. Each top plate 500 of the elevator car top system 400 may include a swing plate 501 connected to a hinge 502. When the top plate 500 is in the closed position, the swing plate 501 may include at least one push member or push pin 503 located above the first folding rod 409. In an exemplary embodiment, the swing plate 501 may include two push members or pins 503 on either side of the short end of the top plate 500. For example, when a person steps on the swing plate 501, one of the push pins 503 pushes the first folding rod 409, causing the first folding rod 409 to move or rotate and trigger a sensor 404. The lengths of one or more push pins 503 may be selected such that when they are pushed downwards, the first folding rod 409 can reach a mid-position. When the first folding lever 409 is in the intermediate position, only sensor 404 can be triggered, while sensor 407 remains untriggered. Alternatively, a float plate can be used instead of a hinged swing plate. Furthermore, when an object is removed, one or more springs can be used to return the plate to its initial position. The springs can be connected to the first folding lever 409.

[0064] The elevator car top system 400 may also include a second folding rod 406. The second folding rod 406 may be, for example, a longitudinal folding rod plate. The second folding rod 406 may be positioned on the side of the frame opposite to the first folding rod 409. The length of the second folding rod 406 may be shorter than the length of the first folding rod 409. The second folding rod 406 may extend partially along the length of the side of the frame 401 such that the stacked end of the top plate 405 is not covered by the second folding rod 406. For example, the second folding rod 406 may start from the end opposite to the position where the top plate 405 is retracted, and it may extend toward the stacked end such that when all the top plates 402, 403, and 405 are in the retracted position at their ends, none of the top plates 402, 403, and 405 are connected to the second folding rod 406.

[0065] The second folding lever 406 can be used to indicate when the elevator car top is fully open. When all top panels 402, 403, 405 slide and fold at one end of the frame 401, the second folding lever 406 can rotate upwards and trigger the fully open sensor 408. The second folding lever 406 can be spring-loaded. At least one top panel 402, 403, 405, at least partially aligned with the second folding lever 406 in the vertical direction, can hold the second folding lever 406 in a first position. When the second folding lever 406 is in the first position, the fully open sensor 408 can be kept untriggered by the second folding lever 406. In response to the last top panel being disconnected from the second folding lever 406, the spring can release the second folding lever 406 to a second position and trigger the sensor 408.

[0066] Compared to continuously operating object detection devices on the top of the elevator car (such as sensors on the top frame), unnecessary stops of the elevator car can be avoided while still ensuring safety. For example, if a maintenance worker's sleeve obstructs a sensor while they are working, a continuously operating sensor on the top frame could interrupt the inspection drive. Unnecessary interference can be avoided because once the top is detected to be fully open, the fully open sensor 408 will override the load on the top sensor 404 and enable the inspection drive. Furthermore, since object detection is implemented through the same electromechanical mechanism that monitors the open state of sensor 407, no additional cost is required.

[0067] exist Figure 4 In this embodiment, the top plates 402, 403, and 405 can be configured to rotate downwards, but in another exemplary embodiment, the described operation can also be implemented in the opposite manner, such that the folding rod can trigger the sensor in response to the top plate opening upwards.

[0068] Figure 6A A schematic cross-section of an elevator car top system according to an embodiment is shown.

[0069] The elevator car roof system includes multiple roof panels 500 that can form the surface of the elevator car roof surrounded by a frame 401. Each roof panel 500 can have the same width, and the total width of the roof panels 500 can correspond to the internal length of the frame 401. When the elevator car roof is fully closed, each roof panel 500 is within the plane of the frame 401.

[0070] Figure 6BAn elevator car top service passage, depicted from above, is shown according to an embodiment when the elevator top is fully closed. Each top panel 500 may be longer in one dimension than in another, and the length and width of the panel may depend on the dimensions of the frame 401. The length of the top panel 500 may correspond to the internal width of the frame 401. When the elevator car top is fully closed, the top panel forms a substantially flat surface.

[0071] Figure 6C A schematic cross-section of an elevator car top system is shown according to an exemplary embodiment when the elevator car top is fully open. Figure 6D The elevator car roof system, depicted from above, is shown. When the elevator car roof is fully open, all the roof panels 500 are folded to the side at one end of the frame 401, each tilted to an upright position. When the roof panels 500 are folded back, they can be in a substantially vertical position relative to the frame 401. Therefore, sufficient space for maintenance can be provided because the elevator car roof can be folded to the side without obstructing the view of the elevator shaft.

[0072] The elevator car top system may include a first folding rod 409 for monitoring the partially open state of the car top. The first folding rod 409 may extend its entire length through the side of a frame 401. The first folding rod 409 may fold downwards in response to at least one top panel 500 tilting to an upright position. In response, the first folding rod 409 may trigger a sensor 407 configured to disable any movement of the elevator car. The elevator car top system may also include a second folding rod 406 for monitoring the fully open state of the car top. The second folding rod 406 may be connected to the side of the frame 401 opposite to the first folding rod 409. The length of the second folding rod 406 may be shorter than the length of the side of the frame 401. The second folding rod 406 may fold upwards in response to all top panels 500 being folded aside at one end of the frame 401. The second folding rod 406 may not extend to the stacked end of the top panels 500. The second folding lever 406 can trigger sensor 408 (i.e., the fully open sensor), which is configured as override sensors 404 and 407, thereby enabling elevator inspection drive. A top plate, at least partially located on top of the second folding lever 406, will obstruct the upward movement of the second folding lever 406. Therefore, sensor 408 may not be triggered when all top plates are not retracted to the side.

[0073] Figures 7A to 7D A schematic diagram is shown of a sequence for detecting objects and monitoring the open state of the elevator car top in an elevator car top system, according to an exemplary embodiment.

[0074] The elevator car top system may include a plurality of movable top panels 500, configured together or separately, within a frame 401 at the top of the elevator car. The elevator car top system may also include a monitoring mechanism for monitoring the open state of the elevator car top and a configuration for object detection, as described above.

[0075] exist Figure 7A In this configuration, the elevator car top is completely closed. Each top panel 500 is in a closed position within the plane of frame 401, positioned side-by-side within frame 401. The first folding lever 409 is in an upward first position, and the sensors of switches 404 and 407, connected to the first folding lever 409, are closed. On the opposite side of the first folding lever 409, the second folding lever 406 is in a downward first position, and the switch 408 connected to the second folding lever 406 is open.

[0076] exist Figure 7B In this configuration, the elevator car top remains completely closed, but someone may be standing on the top plate 500. The top plate 500 may include a float 501, which includes at least one pusher or pin 503. The weight on the top plate 500 may cause at least one pusher pin 503 to push the first folding lever 409 downwards to a neutral position, causing switch 404 to open. Therefore, the elevator car top system can detect an object on the car top in response to a change in the state of switch 404. In response to the open switch 404, elevator operation can be disabled. Switches 407 and 408 remain in their initial state, thus potentially preventing inspection of the drive.

[0077] exist Figure 7C In this configuration, at least one top plate 405 is in the open position, and in this open position, at least one top plate 405 has been rotated such that the top surface of the top plate is no longer in the plane of the frame 401. One or more rotated top plates 405 can push the first folding lever 409 downward to a second position beyond the intermediate position, such that the first folding lever 409 opens both switches 404 and 407. In response to the changed state of switches 404 and 407, the elevator car top system may disable normal elevator operation. However, when at least one top plate 500 is held in the closed position, switch 408 can remain open and prevent inspection of the drive. A person on top of top plate 500 may have already left, and therefore float 501 may have returned to its initial position.

[0078] The open and closed states of switches 404, 407, and 408 are referred to as their connection states. As part of the elevator safety circuit, switch 408, in its closed and connected state, overrides switches 404 and 407 to enable check drive.

[0079] exist Figure 7DIn this configuration, all top plates 405 and 500 within frame 401 have been rotated and folded aside at one end of frame 401. In response to the last top plate sliding away from the top of the second folding lever 406, the second folding lever 406 can be raised, causing switch 408 to close. When switch 408 is closed, the elevator car top system allows for inspection of the drive, while normal elevator movement can be disabled.

[0080] Figure 8A A schematic diagram of a first folding lever 409 in a first position when the elevator car top is fully closed, according to an exemplary embodiment, is shown. The first folding lever 409 can be held in the first position when each top plate 500 and the corresponding swing plate 501 are in a horizontal position in plane A of the top plate 500. When the first folding lever 409 is in the first position, the first switch 407 can be held in a closed state.

[0081] Figure 8B A schematic diagram of a first folding lever in a neutral position when an object is present on the top of an elevator car, according to an exemplary embodiment, is shown. The weight of the object may cause the swing plate 501 to move from plane A of the top plate 500. For example, one side of the swing plate 501 may be raised while the other side may be lowered. The change in position of the swing plate 501 may cause the first folding lever 409 to move, such that switch 404 is opened but switch 407 remains closed.

[0082] Figure 8C A schematic diagram of a first folding lever 409 in a second position when the elevator car top is at least partially open, according to an embodiment, is shown. The top plate 500 can be opened by rotating to an upright position. Simultaneously, the first folding lever 409 can be pushed to the second position by the top plate 500. Figure 8C As shown, changing the position of the first folding lever 409 can open the switch 407 (not shown in the figure), while the switch 404 remains in the open position.

[0083] Figure 8D A schematic diagram is shown of a second folding lever in a first position when the elevator car top is not fully open, according to an exemplary embodiment. At least one top plate 500 in the closed position on the plane of frame 401 holds the second folding lever 406 in a downward position. The downward position of the second folding lever 406 can hold the switch 408 connected to the second folding lever 406 in the open position. Therefore, the second folding lever 406 and the connected switch 408 indicate the position of the top plate and that the elevator car top plate is not fully open.

[0084] Figure 8EA schematic diagram of a second folding lever 406 in a second position when the elevator car top is fully open, according to an exemplary embodiment, is shown. When each top plate 500 is rotated to an upright position and away from the position of the second folding lever 406, none of the top plates 500 can hold the second folding lever 406 in the downward position. Therefore, the second folding lever 406 can rise to the upright position. In the upright position, the second folding lever 406 can allow the switch 408 to close. In response to the closed switch 408, the elevator inspection drive can be enabled.

[0085] Figure 9 A schematic diagram of a monitoring mechanism for an elevator car top system 900 according to another exemplary embodiment is shown.

[0086] The elevator car top system 900 may include a plurality of separately movable top plates 906, 907 disposed within a frame 908 on the top of the elevator car. The top plates 906, 907 may be coupled to slide rails constructed on opposite sides of the frame 908. Each top plate may have a relatively thin rectangular shape having side surfaces as well as top and bottom surfaces. Each of the top plates 906, 907 may rotate about its longitudinal axis such that the top plate is in a closed position when its top surface is in the plane of the frame 908, and in an open position when its top surface is not in the plane of the frame 908. The top plates 906, 907 may, for example, rotate 360 ​​degrees, 180 degrees, or preferably at least 90 degrees.

[0087] The elevator car top system 900 may include at least two sensors 903, 904 for monitoring top opening. In an exemplary embodiment, at least one of the sensors 903, 904 may be a safety contact. In an embodiment, at least one of the sensors 903, 904 may be a magnetic switch. In an embodiment, at least one of the sensors 903, 904 may be a roll-on safety switch.

[0088] In an exemplary embodiment, the elevator car top system 900 can detect that the elevator car top is fully open when all top panels 906, 907 are retracted to one side of the frame 908. When all panels 906, 907 are retracted to one side, a safety circuit 901 at the top or bottom of the panel stack closes. Circuit 901 can be coupled to a first sensor 904. When the top is at least partially closed, at least one top panel 907 is in the closed position. At least one top panel 907 can close a second safety circuit 902 located at the opposite end of the frame 908 from the first safety circuit 901. Closing the second safety circuit 902 can trigger a second sensor 903. Alternatively, each top panel 906, 907 can be coupled to a separate switch to indicate whether the top panel is closed. Sensors 903, 904 and the corresponding safety circuits 902, 901 can be coupled to a car connection plate 905 on the frame 908. Inputs from sensors 903 and 904 can be provided to, for example, an elevator control system via a connection plate 905 for at least one of enabling only normal elevator operation, enabling only check elevator drive, or disabling normal elevator operation.

[0089] Any ranges or device values ​​given herein can be extended or modified without losing the desired effect. Furthermore, any embodiment can be combined with another embodiment unless expressly permitted otherwise.

[0090] Although the subject matter has been described in language specific to structural features and / or actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are disclosed as examples for implementing the claims.

[0091] It will be understood that the above benefits and advantages may relate to one embodiment or several embodiments. The embodiments are not limited to embodiments that solve any or all of the described problems, or embodiments that have any or all of the described advantages and benefits. It will also be understood that a reference to "one" item may refer to one or more of those items.

[0092] The operations described herein can be performed in any suitable order, or simultaneously where appropriate. Aspects of any of the above embodiments can be combined with aspects of any other described embodiments to form other embodiments without losing the desired effect.

[0093] The term "comprising" is used herein to mean including the identified method, block, or element, but such block or element does not include an exclusive list, and the method or elevator car top system may include additional blocks or elements.

[0094] While topics may be referred to as "first" or "second" topics, this does not necessarily indicate the order or importance of these topics. Rather, these attributes can be used simply for the purpose of distinguishing between subjects.

[0095] It will be understood that the above description is given by way of example only, and various modifications can be made by those skilled in the art. The specification, examples, and data above provide a complete description of the structure and use of exemplary embodiments. Although various embodiments have been described above with some degree of specificity or with reference to one or more individual embodiments, those skilled in the art can make various changes to the disclosed embodiments without departing from the scope defined by the claims.

Claims

1. An elevator car top system (400), comprising: Multiple movable top plates (200, 300, 402, 403, 405, 500) form the top of the elevator car. At least one sensor (404, 407, 408) is configured to indicate the position of the top plate (200, 300, 402, 403, 405, 500) and detect any object on the top plate, the position including at least a first state, a second state and a third state, in which the top is completely closed, in which the top is completely open, and in which the top is partially open; Control unit (100); The control unit (100) is configured to enable normal elevator operation only in a first state when no object is detected at the top, based on at least one signal received from at least one sensor (404, 407, 408). The control unit (100) is configured to disable any elevator operation in a third state or when an object is detected at the top, based on at least one signal received from at least one sensor (404, 407, 408); and The control unit (100) is configured to enable elevator inspection drive only in a second state, based on at least one signal received from at least one sensor (404, 407, 408). Wherein, the at least one sensor (404, 407, 408) includes a first sensor (407), a second sensor (404), and a third sensor (408), and the system (400) further includes: The frame (401) on the top of the elevator car. The first folding rod (409) is movably connected to one side of the frame; The second folding rod (406) is movably connected to the side of the frame (401) opposite to the first folding rod (409); The first folding rod (409) is configured to trigger at least one of the first sensor (407) and the second sensor (404); and The second folding rod (406) is configured to trigger the third sensor (408).

2. The elevator car top system (400) according to claim 1, wherein, The top section opens when at least one top plate has rotated away from the plane of the elevator car top relative to the longitudinal axis of the top plate.

3. The elevator car top system (400) according to claim 1 or 2, wherein, The top is fully opened when all the top plates (200, 300, 402, 403, 405, 500) rotate away from the plane of the elevator car top relative to the longitudinal axis of the top plate (200, 300, 402, 403, 405, 500) and move to one side of the opening in the elevator car top.

4. The elevator car top system (400) according to claim 1 or 2, wherein, The top is fully closed when the top plates (200, 300, 402, 403, 405, 500) are positioned side by side on the same plane to cover the entire area of ​​the elevator car top opening.

5. The elevator car top system (400) according to claim 1 or 2, wherein, In the first state and when weight is applied to any of the top plates (200, 300, 402, 403, 405, 500), the first folding bar (409) is configured to trigger the first sensor (407).

6. The elevator car top system (400) according to claim 1 or 2, wherein, In the third state, the first folding rod (409) is configured to trigger the first sensor (407) and the second sensor (404).

7. The elevator car top system (400) according to claim 1 or 2, wherein, In the second state, the second folding lever (406) is configured to trigger the third sensor (408) to override the first sensor (407) and the second sensor (404) to enable inspection drive.

8. The elevator car top system (400) according to claim 5, further comprising: At least one push member (503) associated with each top plate is arranged to face the first folding bar (409). When weight is applied in the first state, the at least one pushing member (503) is configured to move the first folding rod (409), and in response to the movement, the first folding rod (409) is configured to trigger the first sensor (407).

9. The elevator car top system (400) according to claim 5, wherein, The first folding bar (409) extends along the entire side of the frame (401).

10. The elevator car top system (400) according to claim 5, wherein, The second folding rod (406) extends only partially along the side of the frame (401).

11. A control system for an elevator, configured as follows: Receive at least one signal from at least one sensor (404, 407, 408) of the elevator car top system (400) according to any one of claims 1 to 10; and The elevator operation is controlled based on at least one of the signals.

12. An elevator comprising an elevator car top system (400) according to any one of claims 1-10 and a control system according to claim 11.

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