Elevator
By designing a movable layer door kit, providing maintenance space is solved, and the existing lifts are difficult to meet the requirements of natural safe space, and a low-bottom pit design is realized, meeting the dual requirements of safety and economy.
Patent Information
- Application Number
- CN202280099631.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-01
- Publication Date
- 2025-04-08
AI Technical Summary
Existing elevators find it difficult to meet the official natural safety space requirements when lowering the pit height, especially in the event of a failure of the elevator car falling on the bottom hole buffer.
A lift is designed that includes a lift well provided with a layer door, the layer door kit can be moved from a normal position to a maintenance position under the control of the guide element, providing maintenance space, located at the bottom of the lift well, replacing the bottommost layer door for a low or bottomless pit design.
It realizes the provision of natural safe space under the elevator car, meets the official safety space requirements, and reduces the height of the pit and reduces capital expenditure.
Smart Images
Figure CN119790013A_ABST
Abstract
Description
Background Art
[0001] The invention relates to an elevator comprising an elevator shaft provided with landing doors.
[0002] Elevators with a low pit (i.e. the bottom of the shaft) are becoming more and more popular, since lowering the pit also reduces the capital expenditure of the elevator. In this context, the pit means the gap between the bottom of the elevator car and the floor of the elevator shaft when the elevator car is at the lowermost landing. However, official regulations, such as the EU Elevator Directive, require that there be a natural safety space at the bottom of the shaft, even in the event of a fault in which the elevator car falls on the bottom buffer of the shaft. The required pattern for the natural safety space is: 400×500×2000 mm or 500×700×1000 mm. Therefore, it is difficult to reduce the pit height further. Summary of the invention
[0003] From a first aspect, an elevator can be provided, which includes an elevator shaft provided with floor doors, the elevator shaft including a lowermost floor door among the floor doors attached to a floor door frame, the lowermost floor door and the floor door frame forming a floor door kit, the floor door kit being arranged to be movable on a guide element, the floor door kit being movable from a normal position to a maintenance position under the control of the guide element, in the normal position, the lowermost floor door being used as an entrance to the elevator car, in the maintenance position, the floor door kit being located inside the elevator shaft, thereby providing a maintenance space, which is located at the bottom of the elevator shaft, the lowermost floor door having been removed from the opening, and the maintenance space being accessible through the opening.
[0004] Hereby, an elevator can be achieved which has a very low or even no pit but which still provides the required natural safety space below the elevator car.
[0005] The lift is characterized by what is stated in the independent claims. Some other embodiments are characterized by what is stated in the other claims. Inventive embodiments are also disclosed in the description and drawings of this patent application. The inventive content of this patent application may also be defined in other ways than those defined in the following claims. The inventive content may also consist of several separate inventions, in particular if the invention is examined according to explicit or implicit subtasks or in view of the benefits or beneficiary groups obtained. In view of the independent inventive ideas, some of the limitations contained in the following claims may be unnecessary. Within the scope of the basic inventive idea, the features of different embodiments of the invention may be applied to other embodiments.
[0006] Various embodiments of the first aspect may include at least one feature from the following paragraphs:
[0007] In one embodiment, the floor door frame includes an upper horizontal support member, which is arranged in a horizontal plane above the lowest floor door and parallel to the lowest floor door, and a lower horizontal support member, which is arranged in a horizontal plane below the lowest floor door and parallel to the lowest floor door.
[0008] One advantage is that such structural stability and strength can be achieved in the landing door frame that the lowermost landing door does not need to be reinforced, but rather the lowermost landing door can have the same structure as the landing doors arranged in the upper part of the elevator.
[0009] In one embodiment, the upper horizontal support comprises at least one buffer arranged for contacting a bottom of the elevator car.
[0010] One advantage is that contact between the landing door kit in the maintenance position and the elevator car can be cushioned, thereby protecting their structure.
[0011] In one embodiment, the floor portal comprises at least one vertical support on both lateral sides of the floor portal.
[0012] One advantage is that such structural stability and strength can be achieved in the landing door frame that the lowermost landing door does not need to be reinforced, but the lowermost landing door can have the same structure as the landing doors arranged in the upper part of the elevator.
[0013] In one embodiment, the landing door kit comprises at least one door leaf of a lowermost landing door, a threshold, a top track, and optionally an actuator for moving the door leaf.
[0014] One advantage is that all of the main components of the landing door structure can be moved together as a group, which makes moving the kit simpler.
[0015] In one embodiment, the guide element comprises at least one of the following: a rail, a roller or a slide.
[0016] One advantage is that the movement of the landing door assembly can be achieved in a simple, reliable and smooth manner and with as little friction as possible.
[0017] In one embodiment, the landing door kit in the maintenance position is arranged to act as a safety barrier between the maintenance space and the space reserved for the counterweight.
[0018] One advantage is that in the event of a fault, in which the counterweight falls uncontrollably onto its buffer, the safety of the personnel working in the maintenance space can also be increased.
[0019] In one embodiment, the elevator comprises guide rails for guiding the elevator car, and wherein the landing door kit in the maintenance position is located at a vertical plane close to the plane of the guide rails.
[0020] One advantage is that in the event of a fault where the counterweight falls uncontrollably onto its buffer, the safety of personnel working in the maintenance space can also be improved, since the landing door kit prevents personnel from entering the space where the counterweight is moving.
[0021] In one embodiment, the elevator comprises a safety control system, wherein the landing door kit is connected to the safety control system so as to sense the presence of the landing door kit in the normal position and the maintenance position.
[0022] One advantage is that reliable control of the position of the landing door kit can be achieved. Thus, for example, if the landing door kit is not in the normal position, normal use of the lift can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Some embodiments of the present disclosure are described in more detail in the accompanying drawings, wherein
[0024] Figure 1 is a schematic side view of the lower part of the elevator in partial cross section,
[0025] Figure 2 yes Figure 1 Another schematic side view of the lower part of the lift is shown,
[0026] Figure 3 is a schematic view of another lift in partial cross section, and
[0027] Figure 4 yes Figure 3 Another schematic view of a lift is shown.
[0028] In the accompanying drawings, some embodiments are simplified for clarity. In the accompanying drawings, similar parts are marked with the same reference numerals. DETAILED DESCRIPTION
[0029] Figure 1 is a schematic side view of the lower portion of the lift in partial cross-section, and Figure 2 is another schematic side view of the lower portion.
[0030] The elevator 100 comprises an elevator shaft 1 provided with landing doors 2, 2a. The lowermost landing door 2a of the landing doors is attached or arranged on a landing door frame 3, so that the lowermost landing door 2a and the landing door frame 3 constitute a landing door kit 4. The structure of the bracket and the kit is illustrated in more detail in conjunction with the following figures.
[0031] The landing door set 4 - and the lowermost landing door 2a - are arranged to be movable on the guide element 5. In one embodiment, as Figure 1 and Figure 2 As shown, the landing door kit 4 can move in the horizontal direction. In another embodiment, the landing door kit 4 can move in the inclined direction so that the landing door kit 4 rises when it moves from the normal position to the maintenance position. In yet another embodiment, the landing door kit 4 can move in the inclined direction so that the landing door kit 4 falls when it moves from the normal position to the maintenance position.
[0032] In one embodiment, the landing door kit 4 is moved manually without the aid of any actuator or power unit. In one embodiment, the landing door kit 4 is provided with an actuator or power unit 27 arranged to create the force required to move the landing door kit 4.
[0033] The landing door kit 4 can be moved from the normal position to the maintenance position under the control of the guide element 5. Figure 1 As shown), the lowermost landing door 2a serves as the entrance to the elevator car 6. In the maintenance position (as shown Figure 2 As shown in FIG. 1 , the landing door kit 4 is located inside the elevator shaft 1 and provides or creates a maintenance space 7 at the bottom of the elevator shaft 1. In one embodiment, as shown in FIG. Figure 1 and Figure 2 As shown, the maintenance space 7 is connected to or integrated with a pit 26 located on the bottom of the elevator shaft 1. In the maintenance position, there is an entrance A for, for example, maintenance personnel to enter and exit the maintenance space 7 through an opening 8 of the elevator shaft 1, from which the lowermost landing door 2a has been moved.
[0034] Various tasks, such as inspection, adjustment work, maintenance or repair, referred to as "maintenance work" in short, can be performed in the maintenance space 7. For example, maintenance work can be concentrated on the pit, the bottom of the elevator car and / or the lowermost landing door.
[0035] In one embodiment, the landing door kit 4 in the maintenance position serves as a safety barrier between the maintenance space 7 and the space 21 where the counterweight (not shown) can move.
[0036] The elevator is provided with a safety control system 22, such as a safety circuit. In one embodiment, the landing door kit 4 is connected to the safety control system 22 so as to sense the presence of the landing door kit 4 in the normal position and the maintenance position. This can be achieved, for example, by closing the safety circuit when the landing door kit 4 is in the normal position or the maintenance position. If the landing door kit 4 is in a position between the positions, the safety circuit is opened.
[0037] Typically, the landing door 2, 2a does not have its own actuator. The landing door is opened and closed together with the elevator car door (not shown), so that the movement of the elevator car door is transmitted to the landing door. However, if the lowermost landing door 2a includes an actuator 17 for opening and closing the door leaf of the lowermost landing door, the actuator can be included in the landing door kit 4.
[0038] In one embodiment, the landing door kit 4 is locked in its normal position by at least one lock, such as Figure 1 As shown. Figure 2 As shown, when the elevator car 6 is moved above the lowermost landing, the lock (one or more) is opened and the landing door kit 4 can then be pushed into the maintenance position within the elevator shaft. Then, personnel can enter the maintenance space 7. After the personnel have left the maintenance space 7, the landing door kit 4 is pulled back to its normal position and the elevator can serve the floors normally.
[0039] In one embodiment, at least one lock is operated by a triangular key. In one embodiment, the operation of at least one lock is based on a digital key, which may be combined with a mechanical or electromechanical key. In one embodiment, at least one lock is an electrically operated lock, the use of which preferably requires authentication of the user.
[0040] Figure 3 is a schematic view of another lift in partial cross-section, and Figure 4 yes Figure 3 Another schematic view of a lift is shown.
[0041] The door frame 3 may be constructed in a variety of ways. In one embodiment, it includes at least one upper horizontal support 9, which is arranged in a horizontal plane above the lowest door 2a and parallel to the lowest door; at least one lower horizontal support 10, which is arranged in another horizontal plane below the lowest door 2a and parallel to the lowest door; and at least one vertical support 13, which is located on two lateral sides of the door frame. Figure 3 and Figure 4 The embodiment shown comprises two vertical supports 13 located on two lateral sides of the landing frame. Said supports may consist, for example, of metal profiles and be fixed to each other, for example, by welding or fixing means such as bolts or rivets.
[0042] In one embodiment, the upper horizontal support 9 includes at least one buffer 11, which is arranged to contact the bottom (or suspension rope) of the elevator car 6 when the elevator car 6 is lowered on the floor gantry 3 when the floor gantry 3 is arranged to the maintenance position. Figure 3 and Figure 4The embodiment shown comprises two cylindrical bumpers 11, but it is obvious that their number and shape may vary.
[0043] In one embodiment, the elevator car 6 includes at least one lower buffer 12 (e.g. Figure 2 ), the at least one lower buffer is used to contact the floor gantry 3, which is arranged in its maintenance position. In one embodiment, the floor gantry 3 and the elevator car 6 include at least one buffer. The buffer can be positioned so that they meet when the elevator car contacts the floor gantry, but this is not necessary.
[0044] The bumper is preferably resilient and made of, for example, a suitable elastomeric material.
[0045] In one embodiment, the landing door kit 4 comprises a door leaf (one or more) 14 of the lowermost landing door 2a, and a threshold 15 and a top track 16 of the lowermost landing door. The structures of the door leaf (one or more), the threshold and the top track are preferably the same or similar to those of other landing doors arranged in the elevator shaft 1. In other words, the landing door kit and the landing door frame do not require any structural or material modifications to the landing door of the lowermost layer.
[0046] In one embodiment, the guide element 5 is attached to a guide rail 20 which is arranged in the elevator shaft 1 for guiding the elevator car 6. An example of such a solution is Figure 3 and Figure 4 In one embodiment, the guide element 5 is attached to a guide rail which guides a counterweight (not shown).
[0047] In one embodiment, the guide element 5 is attached to the structure of the elevator shaft 1. For example, the guide element 5 may be attached to a vertically arranged wall 18 of the elevator shaft or to the floor 19 of the elevator shaft, or to both.
[0048] In some embodiments of the elevator, there are two adjacent elevator shafts without any wall in between. Instead, support elements such as support beams 23 are arranged between the elevator shafts for supporting them and providing attachment points, e.g. for guide rails etc. In one embodiment, the guide element 5 is attached to the support element(s) of the elevator shaft, e.g. to the support beam(s) 23.
[0049] Typically, the guide element 5 is also attached to the front wall 24 of the elevator shaft.
[0050] In one embodiment, the guide element 5 comprises at least one guide rail. The guide rail may be arranged to cooperate with one or more rollers (one or more) or slides (one or more) or guide rails (one or more), such as these rollers or slides or guide rails, such as being attached to the landing door kit 4, such as being attached to the landing door frame 3 of the landing door kit 4.
[0051] In one embodiment, the guide element 5 comprises at least one roller. The roller may be arranged to cooperate with one or more guide rails (one or more) or slides (one or more) which are attached, for example, to the landing door kit 4, for example, to the landing door frame 3 of the landing door kit 4.
[0052] In one embodiment, the guide element 5 comprises at least one slide. The slide may be arranged to cooperate with one or more guide rails (one or more), rollers (one or more) or slides (one or more), which are attached to the landing door kit 4, such as the landing door frame 3 of the landing door kit 4.
[0053] Typically, the lift 100 comprises a plurality of guide elements 5. For example, Figure 3 , Figure 4 The embodiment shown comprises four guide elements. It should be noted that all guide elements may be of similar type and structure. However, this is not always necessary.
[0054] From the normal position (such as Figure 1 and Figure 3 as shown) to the maintenance position (as shown Figure 2 and Figure 4 The length or extent of movement of the elevator car 6 can be selected according to the needs of the boundary conditions set by the elevator structure. In one embodiment, as shown in the figure, the elevator 100 includes a guide rail 20, which is arranged to guide the movement of the elevator car 6. The length or range of the movement is arranged so that the movement of the floor door kit 4 stops at a vertical plane 25 close to the plane of the guide rail 20. This is slightly less than the distance between the front wall and the rear wall of the elevator shaft. In other embodiments, the movement is half or more than half of the distance between the front wall and the rear wall. In yet other embodiments, the movement is substantially less than half of the distance between the front wall and the rear wall.
[0055] The present invention is not limited to the above-described embodiments alone, but many variations are possible within the scope of the inventive concept defined by the following claims. Within the scope of the inventive concept, the properties of different embodiments and applications may be used in combination with or replace the properties of another embodiment or application.
[0056] The drawings and the related description are intended only to illustrate the idea of the invention. The invention may vary in details within the scope of the inventive idea defined in the following claims.
[0057] Reference numerals
[0058] 1 Elevator shaft
[0059] 2 Bottom door
[0060] 3-layer door frame
[0061] 4-layer door kit
[0062] 5 Guiding elements
[0063] 6 Elevator Car
[0064] 7 Maintenance Space
[0065] 8 Opening
[0066] 9 Upper horizontal support
[0067] 10 Lower horizontal support
[0068] 11 Buffer
[0069] 12 Bottom of elevator car
[0070] 13 Vertical support
[0071] 14 Door leaf
[0072] 15 Threshold
[0073] 16 Top Rail
[0074] 17 Actuator
[0075] 18 walls
[0076] 19 Bottom Plate
[0077] 20 Guide Rail
[0078] 21 Space for counterweight
[0079] 22 Safety Control System
[0080] 23 Support beam
[0081] 24 Anterior wall
[0082] 25 Vertical plane
[0083] 26 Pit
[0084] 27 Power Unit
[0085] 100 Lift
Claims
1. An elevator (100), comprising: An elevator shaft (1) provided with a landing door, The lowermost landing door (2) among the landing doors is attached to a landing door frame (3), The lowermost landing door (2) and the landing door frame (3) form a landing door kit (4). The landing door kit (4) is arranged to be movable on a guide element (5). The landing door kit (4) is movable under the control of the guide element (5) from a normal position, in which the lowermost landing door (2) serves as an entrance to the elevator car (6), to a maintenance position, in which the landing door kit (4) is located inside the elevator shaft (1), thereby providing A maintenance space (7) is located at the bottom of the elevator shaft, the lowermost landing door having been removed from an opening (8) through which the maintenance space (7) can be accessed.
2. The elevator according to claim 1, wherein the layer door frame (3) comprises: an upper horizontal support member (9), the upper horizontal support member being arranged in a horizontal plane above the lowermost floor door (2) and parallel to the lowermost floor door (2), and A lower horizontal support member (10) is arranged in a horizontal plane below the lowermost floor door (2) and is parallel to the lowermost floor door (2).
3. The lift according to claim 2, wherein The upper horizontal support (9) comprises at least one buffer (11) arranged for contacting a bottom (12) of the elevator car.
4. An elevator according to any one of the preceding claims, wherein the landing gantry (3) comprises: At least one vertical support (13) on two lateral sides of the layer portal frame.
5. An elevator according to any one of the preceding claims, wherein the landing door kit (4) comprises: The bottommost door comprises at least one door leaf (14), a threshold (15) and a top track (16).
6. An elevator according to any one of the preceding claims, wherein the landing door kit (4) comprises: An actuator (17) is used to move the door leaf of the lowermost door to open and close.
7. A lift according to any one of the preceding claims, wherein The guide element (5) comprises at least one of the following: a rail, a roller or a slide.
8. A lift according to any one of the preceding claims, wherein At least one of the guide elements (5) is attached to a wall (18) of the elevator shaft.
9. A lift according to any one of the preceding claims, wherein At least one of the guide elements (5) is attached to the floor (19) of the elevator shaft.
10. A lift according to any one of the preceding claims, wherein At least one of the guide elements (5) is attached to a guide rail (20) arranged in the elevator shaft (1) for guiding the elevator car (6).
11. A lift according to any one of the preceding claims, wherein At least one of the guide elements (5) is attached to a support beam (23) of the elevator shaft.
12. A lift according to any one of the preceding claims, wherein At least one of the guide elements (5) is attached to a front wall (24) of the elevator shaft.
13. A lift according to any one of the preceding claims, wherein The landing door kit (4) in the maintenance position is arranged to act as a safety barrier between the maintenance space (7) and the space (21) reserved for the counterweight.
14. A lift according to any one of the preceding claims, wherein The elevator comprises guide rails (20) for guiding the elevator car, and wherein The landing door kit (4) in the maintenance position is located at a vertical plane (25) close to the plane of the guide rail (20).
15. A lift according to any one of the preceding claims, wherein The landing door kit (4) is arranged to move by horizontal movement between the normal position and the maintenance position.
16. A lift according to any one of the preceding claims, comprising: A safety control system (22), wherein The landing door kit (4) is connected to the safety control system (22) so as to sense the presence of the landing door kit (4) in the normal position and the maintenance position.