Elevator system having a blocking device for a car
By introducing first and second blocking devices into the elevator system, the problems of space and safety during elevator system maintenance are solved, a safe volume is provided to facilitate operation by mechanics, the maintenance process of the elevator car is simplified, and space utilization efficiency and safety are improved.
Patent Information
- Application Number
- CN202511181077.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-08-26
- Filing Date
- 2025-08-22
- Publication Date
- 2026-03-03
AI Technical Summary
Existing elevator systems require additional shaft space for maintenance to facilitate mechanics' operations, and the car is difficult to reliably maintain in a safe position during maintenance, affecting space utilization and passenger safety.
A safety device is adopted, which includes first and second blocking devices. The first blocking device is fixed on the shaft wall or guide rail, and the second blocking device is installed inside the elevator car. By interacting with the first blocking device, the elevator car is reliably stopped within the safe volume during maintenance, providing sufficient space and safety.
It ensures the safety of mechanics and passengers without increasing the shaft space, simplifies the elevator car maintenance process, and improves space utilization efficiency.
Smart Images
Figure CN121591086A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to a counterweight for an elevator system having an elevator car and at least one guide rail for guiding the elevator car as it moves up and down in a shaft. Background Technology
[0002] As is well known, elevator systems require maintenance; however, this often necessitates additional space in the elevator shaft to allow mechanics sufficient room to maintain components located above or below the car. Simultaneously, the car should reliably remain in a waiting position. Summary of the Invention
[0003] In this regard, the purpose of this disclosure is to provide an improved elevator system that avoids the known disadvantages of the prior art.
[0004] This is addressed by the elevator system described in the independent claim. Alternative embodiments are the subject of the dependent claims.
[0005] According to one aspect, an elevator system positioned within a shaft is provided. The elevator system includes an elevator car, at least one guide rail for guiding the elevator car as it moves vertically within the shaft, and a safety device designed and arranged such that a safety volume within the shaft above or below the elevator car can be configured to at least one safe state, allowing for safe maintenance operations by a mechanic within the safety volume. The term "safety volume" as used in this context should be understood essentially as a volume large enough for a mechanic to enter and perform necessary maintenance work. Specifically, the safety volume may have a height of at least 1 meter. The safety device includes at least one first blocking device attached to at least one guide rail or configured to be mounted to a wall of the shaft, and at least one second blocking device configured to be mounted from within the elevator car on or in the elevator car to interact with the first blocking device to prevent the elevator car from moving upward when the safety volume is positioned above the elevator car, or downward when the safety volume is positioned below the elevator car. This configuration provides safe and convenient conditions for field technicians performing maintenance above or below the car. It also maintains safe conditions for passengers when the elevator is operating normally. A safe volume is provided during maintenance performed by technicians from inside the car. It safely allows the car to be moved while on-site technicians are performing maintenance tasks. This configuration solves the problems associated with low overhead and low pit configurations.
[0006] According to one aspect, the first blocking device is wedge-shaped, rod-shaped, or plate-shaped. The first blocking device can be configured as an angle iron (having a triangular shape). Therefore, the first blocking device can have at least one extension that is transverse to the longitudinal extension of at least one guide rail. Thus, the first blocking device is simple in design and simultaneously robust and durable.
[0007] According to one aspect, the first blocking device is configured as a fixed stop at a specific position along at least one guide rail. This makes controlling the safety state as easy as possible.
[0008] According to one approach, two guide rails are provided, and a first blocking device is attached to each guide rail. By creating two support points, the car is more stably supported in a safe state.
[0009] Depending on the type of device, the second blocking device can be wedge-shaped, rod-shaped, or plate-shaped. This also makes the second blocking device easy to manufacture.
[0010] According to one aspect, the second blocking device includes a retaining rod for anchoring to the elevator car in a safe condition. This simplifies the installation of the second blocking device in the car.
[0011] According to one aspect, the second blocking device includes a support area that is wider than the retaining rod, and the support area is arranged outside the elevator car for direct contact with the first blocking device in a safe condition.
[0012] According to one aspect, at least one second blocking device is slidably guided within the elevator car. This at least one second blocking device can be slidably guided, at least indirectly, relative to the frame or cabin of the elevator car. Therefore, the second blocking device can be safely adjusted.
[0013] According to one aspect, at least one second blocking device is housed in or beneath the floor of the elevator car. Alternatively, at least one second blocking device may be integrated into the ceiling or side wall of the elevator car. This will not adversely affect the interior of the car.
[0014] According to one aspect, two second blocking devices are provided, and the two second blocking devices are designed as identical components. This simplifies operation and assembly.
[0015] On one hand, when viewed along its longitudinal direction, the two second blocking devices are fixed at the same longitudinal position on the elevator car. This also simplifies operation and assembly.
[0016] According to one aspect, at least one first blocking device and at least one second blocking device are matched together so as to create a fixed stop and / or form fit at least in the upward direction of the elevator car when the safety volume is arranged above the elevator car, or to create a fixed stop and / or form fit at least in the downward direction of the elevator car when the safety volume is arranged below the elevator car.
[0017] According to one aspect, two second blocking devices are provided, and they are configured to extend out of the elevator car in the opposite direction of the elevator car. This also simplifies operation and assembly.
[0018] On one hand, the side wall of the elevator car has an opening through which a second blocking device can be inserted from the inside of the elevator car to the outside. This also simplifies operation and assembly from inside the car.
[0019] On one hand, a flip-top / base is provided that is attached to the elevator car, which can close the opening.
[0020] In other words, a standard car (elevator car) is provided, on which a removable decorative base can be installed. The blocking tools (safety devices) include wedges (second blocking devices), which, once installed and locked in the car, prevent movement beyond a certain height. Two angle irons (first blocking devices) mounted on the guide rails or fixed to the hoistway wall can block the car in an overhead inspection position (safe state). A car top access detection system can be provided, which will prevent any movement of the car if no tool is installed below. Additionally, contacts can be included that monitor the position of the tool. A trapdoor top can be provided for access to the top of the car from the car. Furthermore, a movable barrier can be installed on the top of the car. Attached Figure Description
[0021] The embodiments of this disclosure, which are merely examples, will now be described with reference to the accompanying drawings. In the drawings:
[0022] Figure 1 A simplified side view of an elevator system is shown, which includes an elevator car, guide rails, and safety devices for defining and maintaining a safety volume above the elevator car within the hoistway, the safety volume being in at least one safe state to allow for safe maintenance operations by mechanics within the safety volume.
[0023] Figure 2 It shows, as Figure 1 A perspective view of the two blocking devices (hereinafter referred to as the second blocking devices) used for fixing to the elevator car;
[0024] Figure 3 It shows, as Figure 1The side view of the elevator car used shows several flip-up covers installed in and above the car for maintenance operations; and
[0025] Figure 4 It shows, as Figure 1 The side view of the first blocking device near the guide rail is shown. The first blocking device is used as a fixing stop for one of the second blocking devices in a safe state. Detailed Implementation
[0026] Embodiments of the present disclosure will now be described with reference to the accompanying drawings. The same elements in the drawings are assigned the same reference numerals. It should be noted that the described embodiments are for illustrative purposes only, and the description of the embodiments is not intended to limit the scope of the present disclosure.
[0027] Figure 1 An elevator system 1 according to an exemplary embodiment is shown. The elevator system 1 is arranged / inserted / installed in a shaft 2. The shaft 2 can be conventionally limited by corresponding walls in the housing. The elevator car 3 can move vertically within the shaft 2 in a conventional manner.
[0028] At least one guide rail 4 is provided to guide the vertical movement of the elevator car 3. According to Figure 1 Alternatively, more than one guide rail 4 can be used, such as two guide rails 4. The corresponding guide rail 4 is attached (directly or indirectly) to the wall of the shaft 2. The guide rail 4 also extends along / parallel to the shaft 2 in its longitudinal direction in the conventional manner.
[0029] As also Figure 1 As indicated, during maintenance work, a safety volume 6 (low-level configuration) is often required above the elevator car 3. For example, the components of the elevator car 3's drive unit are located in this safety volume 6, and therefore, the mechanic must be able to enter this safety volume 6 from the maintenance position of the elevator car 3. Alternatively, the safety volume 6 can also be located below the elevator car 3, such as in a low-pit configuration.
[0030] In order to ensure that the safety volume 6 is always reliably positioned in the same location, thereby reducing the space required in the shaft 2, while ensuring sufficient accessibility for the mechanics, a safety device 5 is provided. This safety device 5 ensures that the elevator car 3 is always stopped in the same fixed position in a safe state, so that the mechanics inside the safety volume 6 can perform safe maintenance operations.
[0031] Let's take a look together Figure 1 and Figure 4As can be seen, safety device 5 has at least a first blocking device 7. This first blocking device 7 is ultimately and securely connected to the wall of shaft 2. For this purpose, the first blocking device 7 can be directly attached to the wall of shaft 2. Alternatively, the first blocking device 7 can also be indirectly connected to the wall of shaft 2, and for example, fixed to guide rail 4, which in turn is connected to the wall.
[0032] It can also be seen that multiple first blocking devices 7 can exist (e.g., two in this example, as shown). One first blocking device 7 is attached to each guide rail 4 or in the region of each guide rail 4. Two first blocking devices 7 can be arranged at the same height (viewed along the hoistway 2 / guide rail 4), as... Figure 1 As shown in the image.
[0033] The corresponding first blocking device 7 is designed as, for example, a wedge-shaped / triangular stop element, but in principle it can also have other shapes, such as plate-shaped or pin-shaped.
[0034] The corresponding first blocking device 7 can protrude beyond the corresponding guide rail 4 in the lateral direction toward the elevator car 3 so as to eventually interact with the second blocking device 8, which is described in more detail below, in a safe state.
[0035] The corresponding first blocking device 7 can also be made of steel and thus formed as angle steel.
[0036] Let's take a look together Figure 1 and Figure 2 The diagram illustrates a second blocking device 8 of the safety device 5, each second blocking device 8 interacting with a first blocking device 7. Similarly, since each second blocking device 8 interacts with only one first blocking device 7, it is alternatively possible to have only one second blocking device 8, rather than multiple, such as... Figure 1 and Figure 2 The two second blocking devices 8 shown in the figure.
[0037] A corresponding second blocking device 8 is attached to or on the elevator car 3 during maintenance. The second blocking device 8 has a retaining rod 9, which is securely connected to the frame or cabin of the elevator car 3 in a safe condition. The retaining rod 9 is arranged in the floor, i.e., below the floor slab 11 forming the floor, so that only a mechanic can access the floor slab during maintenance. Alternatively, the second blocking device 8 (and its retaining rod) may also be arranged in any other part of the elevator car 3, such as part of the frame (e.g., a column) or part of the cabin (e.g., a side wall, floor, ceiling, and associated panels).
[0038] The retaining rod 9 also passes through the side wall 12 of the elevator car 3 via an opening 13 (e.g., in the form of a through hole). Therefore, the section of the second blocking device 8 is located outside the elevator car 3 and overlaps laterally with the associated first blocking device 7 in the area of the support region 10. This support region 10 is designed for direct contact with the first blocking device 7 in a safe condition.
[0039] Figure 2 The support area 10 can be, for example, plate-shaped. Therefore, the support area 10 can be wider than the retaining rod 9.
[0040] Finally, Figure 1 and Figure 2 In an exemplary embodiment, two second blocking devices 8 are therefore provided, which protrude outward from the interior of the elevator car 3 toward opposite sides / sidewalls of the elevator car 3. Thus, the two first blocking devices 7 can block the elevator car 3 in either the upper inspection position (safe state) or the lower inspection position.
[0041] It should also be noted that at least one second blocking device 8 can be permanently retained in the elevator car 3, that is, even during normal operation of the elevator system 1. For this purpose, the second blocking device 8 can be in a position fully retracted inside the elevator car 3 and, as... Figure 1 The extended positions shown are guided in a movable manner. In this configuration, the second blocking device 8 can be accessed and adjusted from inside the elevator car 3.
[0042] If two second blocking devices 8 are used, these can be attached to the elevator car 3 in their extended positions in a common area, which is approximately at the same height as the retaining rods 9 that partially overlap with them, such as... Figure 2 The corresponding line in the middle represents this.
[0043] at last, Figure 3 A decorative flap 14 is indicated, which is pivotally attached to the side wall 12 and can also be configured to close the opening 13. Of course, only a mechanic can open these flaps 14. Figure 3 (As shown in the open position), so as to obtain passage for opening 13 and to attach the second blocking device 8 to it. Figure 1 The location shown in the image.
[0044] In a conventional manner, the elevator car 3 also has an exit flap 15 on its upper side (as a hatch top), allowing a mechanic to access the safety volume 6 for maintenance. Alternatively, these exit flaps 15 can be located on the lower side of the elevator car 3.
[0045] In this regard, it should be noted that a car top entry detection system / car floor entry detection system can be provided so that if the second blocking device 8 is not installed in its extended position (according to...) Figure 1 It will block any movement of the cabin.
[0046] In addition, it may include a contact that monitors the position of at least the second blocking device 8.
[0047] In addition, a movable barrier can be provided on the top of the car.
[0048] In the event of maintenance, the safety device 5 provides fixed-position support for the elevator car 3 in the hoistway 2, which is determined by the stop of at least one second blocking device 8 on at least one first blocking device 7, so as to safely set the safety volume 6 and maintain it during maintenance work. For subsequent resumption of normal operation, at least one second blocking device 8 must either be completely removed from the elevator car 3 or retracted at least from its extended position overlapping with the first blocking device 7 to a position away from the first blocking device 7, in which it does not overlap with the first blocking device 7.
[0049] Reference Symbol List
[0050] 1. Elevator System
[0051] 2 shafts
[0052] 3 elevator cars
[0053] 4 guide rails
[0054] 5 safety devices
[0055] 6 safety volume
[0056] 7 First blocking device
[0057] 8 Second blocking device
[0058] 9-bar
[0059] 10 support areas
[0060] 11 floorboards
[0061] 12 sidewalls
[0062] 13 openings
[0063] 14 Flip
[0064] 15 Exit Flip Cover
Claims
1. An elevator system (1) positioned in a shaft (2), the elevator system (1) comprising: Elevator car (3), At least one guide rail (4) for guiding the elevator car (3) as it moves up and down in the shaft (2), and Safety device (5), designed and arranged such that a safety volume (6) inside the hoistway (2) above or below the elevator car (3) can be set to at least one safe state to allow for safe maintenance operations by mechanics within the safety volume (6). Its features are, The safety device (3) includes at least one first blocking device (7) attached to the at least one guide rail (4) or configured to be mounted to the wall of the hoistway (2), and at least one second blocking device (8) configured to be mounted on or in the elevator car (3) to interact with the first blocking device (7) to prevent upward movement of the elevator car (3) when the safety volume (6) is arranged above the elevator car (3), or to prevent downward movement of the elevator car (3) when the safety volume (6) is arranged below the elevator car (3).
2. The elevator system (1) according to claim 1, characterized in that, The first blocking device (7) is wedge-shaped, rod-shaped or plate-shaped.
3. The elevator system (1) according to claim 1 or 2, characterized in that, The first blocking device (7) is configured as a fixed stop at a specific position along the at least one guide rail (4).
4. The elevator system (1) according to any one of claims 1 to 3, characterized in that, Two guide rails (4) are provided, and a first blocking device (7) is attached to each guide rail (4).
5. The elevator system (1) according to any one of claims 1 to 4, characterized in that, The second blocking device (8) is wedge-shaped, rod-shaped or plate-shaped.
6. The elevator system (1) according to any one of claims 1 to 5, characterized in that, The second blocking device (8) includes a retaining rod (9) for anchoring to the elevator car (3) in the safe state.
7. The elevator system (1) according to claim 6, characterized in that, The second blocking device (8) includes a support area (10) that is wider than the retaining rod (9) and is arranged outside the elevator car (3) for direct contact with the first blocking device (7) in the safe state.
8. The elevator system (1) according to any one of claims 1 to 7, characterized in that, The at least one second blocking device (8) is slidably guided in the elevator car (3).
9. The elevator system (1) according to any one of claims 1 to 8, characterized in that, The at least one second blocking device (8) is housed in or below the floor plate (11) of the elevator car (3).
10. The elevator system (1) according to any one of claims 1 to 9, characterized in that, Two second blocking devices (8) are provided and designed as identical components.
11. The elevator system (1) according to claim 10, characterized in that, When viewed along their longitudinal direction, the two second blocking devices (8) are fixed at the same longitudinal position on the elevator car (3).
12. The elevator system (1) according to any one of claims 1 to 11, characterized in that, The at least one first blocking device (7) and the at least one second blocking device (8) are matched together so that when the safety volume (6) is arranged above the elevator car (3), a fixed stop and / or form fit is generated at least in the upward direction of the elevator car (3), or when the safety volume (6) is arranged below the elevator car (3), a fixed stop and / or form fit is generated at least in the downward direction of the elevator car (3).
13. The elevator system (1) according to any one of claims 1 to 12, characterized in that, Two second blocking devices (8) are provided and configured to extend from the elevator car (3) in opposite directions.
14. The elevator system (1) according to any one of claims 1 to 13, characterized in that, The side wall (12) of the elevator car (3) has an opening (13) through which the second blocking device (8) can be inserted from the inside of the elevator car (3) to the outside.
15. The elevator system (1) according to claim 14, characterized in that, A flip cover (14) is provided to be attached to the elevator car (3), the flip cover (14) being capable of closing the opening (13).