Elevator landing door unlocking transmission mechanism

Abstract

The utility model relates to the technical field of elevator safety, and discloses an elevator landing door unlocking transmission mechanism which comprises a quadrilateral connecting rod mechanism, a lock hook connecting plate, a stay wire sleeve, a steel wire rope stay wire and a fixing support. A lower transverse connecting rod of the quadrilateral connecting rod mechanism is fixed on a lock hook seat bracket (or a nearby fulcrum), and an upper transverse connecting rod is pulled to move up and down through a steel wire rope stay wire; the lock hook connecting plate is fixed to the lock hook and drives the lock hook to be separated from the lock hook base when being lifted along with the connecting rod. The stay wire sleeve is installed on the door guide rail frame through the fixing support to ensure directional movement of the steel wire rope. The quadrilateral connecting rod replaces a traditional rotating shaft, the folding characteristic of the quadrilateral connecting rod is used for reducing the axial space requirement, the quadrilateral connecting rod is suitable for a narrow installation environment, and unlocking stability and reliability are improved. The modular design simplifies the maintenance process, and parts can be replaced without disassembling the door guide rail frame. The device is suitable for an emergency unlocking scene of a top-mounted or side-mounted triangular lock, and has the advantages of compact structure, convenience in operation, low maintenance cost and the like.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to an elevator landing door unlocking transmission mechanism. This mechanism is especially suitable for scenarios where elevator landing doors can be reliably and efficiently unlocked in emergency situations, providing an important guarantee for the safe use of elevators. Background Technology

[0002] In current elevator landing door unlocking technology, most top-mounted or side-mounted triangular locks employ a traditional horizontal pivot-operated unlocking method. However, this method has revealed several significant problems in practical applications:

[0003] Spatial layout challenges: The horizontal pivot-driven unlocking mechanism requires significant axial space. In actual installation, this often necessitates passing through the door guide rail frame, which not only necessitates substantial modifications and impacts on the frame's component structure but also complicates and complicates the installation process. Furthermore, in some cases, it is only applicable to larger door guide rail frames, undoubtedly increasing equipment configuration costs and limiting its application in elevators of different specifications.

[0004] Poor reliability: Due to the extremely limited available space near the elevator landing door lock hook seat, the traditional rotating shaft transmission mechanism is significantly affected by space constraints. Under these limited space conditions, even minor errors during installation can severely impact the unlocking operation, leading to unstable unlocking action, jamming, and greatly reducing the reliability and security of unlocking.

[0005] Maintenance difficulties: Traditional unlocking devices have a complex structure and strong interrelationships between components. During inspection and maintenance, multiple components often need to be disassembled to reach the area requiring repair. This not only increases the workload and time cost of maintenance but may also damage other components during disassembly and installation, further affecting the normal operation of the elevator. Utility Model Content

[0006] The purpose of this utility model is to provide an elevator landing door unlocking transmission mechanism. This mechanism adopts an innovative quadrilateral linkage mechanism design, which replaces the traditional shaft pulling method with linkage transmission, thereby optimizing the spatial layout, reducing the requirements for installation space, and significantly improving the stability of the unlocking action and the convenience of operation, ensuring that the elevator landing door can be opened quickly and reliably in emergency situations.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an elevator landing door unlocking transmission mechanism for emergency opening of the landing door lock, comprising:

[0008] The transmission assembly has a fixed end and a movable end. The fixed end is fixed to the lock hook bracket (or a nearby fulcrum), and the movable end can move relative to it.

[0009] A connecting component, which is connected to and operates synchronously with the lock hook of the landing door lock;

[0010] A guide assembly is mounted on the door guide rail frame by a fixing assembly and maintains a preset distance from the transmission assembly;

[0011] A traction component, one end of which is connected to the movable end of the transmission component, and pulling the traction component can drive the movable end to move; a fastener, which is used to fix the transmission component, the connecting component, the guiding component and the traction component.

[0012] As a further improvement to the technical solution of this utility model, the transmission component is a quadrilateral linkage mechanism, which consists of four linkages connected by hinges to form a rhomboid structure. The fixed end is the lower horizontal linkage, the movable end is the upper horizontal linkage, and it is provided with an arc-shaped guide surface that contacts the locking hook connecting plate. The upper horizontal linkage moves up and down by folding.

[0013] As a further improvement to the technical solution of this utility model, the connecting component is a locking hook connecting plate; the locking hook connecting plate is fixedly linked with the locking hook.

[0014] As a further improvement to the technical solution of this utility model, the guide component is a pull cable sleeve; the pull cable sleeve is a corrugated flexible hose, and its end is provided with a limiting clamp to enhance the protection and limiting of the traction component.

[0015] As a further improvement to the technical solution of this utility model, the traction component is a steel wire rope pull line, and the angle between its traction direction and the movement direction of the moving end of the transmission component is less than 30°.

[0016] As a further improvement to the technical solution of this utility model, the fixing component is a fixing bracket; the pull wire sleeve is installed on the fixing bracket; the fixing bracket is installed on the door guide rail frame by the fastener.

[0017] As a further improvement to the technical solution of this utility model, the quadrilateral linkage mechanism is in a folded reset state when not in operation.

[0018] This utility model has the following beneficial effects:

[0019] Space utilization optimization: The transmission component (quadrilateral linkage mechanism) utilizes its unique folding motion characteristics to significantly reduce the requirement for axial space. This allows the mechanism to better adapt to the confined installation environment near the elevator landing door lock hook seat, without requiring large-scale modifications to the main structure of the door guide frame, thus reducing installation difficulty and cost.

[0020] Significantly improved reliability: The linkage transmission system ensures more even force distribution and more controllable movement trajectory throughout the unlocking process. This design effectively avoids the jamming problem that easily occurs in traditional shaft-operated unlocking methods, ensuring that the unlocking action can be completed stably and reliably, and improving the success rate of elevator door opening in emergency situations.

[0021] Enhanced ease of maintenance: This utility model adopts a modular design concept, with a clear and reasonable layout of each component. During inspection and maintenance, there is no need to disassemble major components such as the door guide rail frame, allowing for convenient inspection and replacement of each component, greatly reducing maintenance costs and time, and improving the elevator's operating efficiency and reliability. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram (reset state) of an elevator landing door unlocking transmission mechanism according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of an elevator landing door unlocking transmission mechanism according to an embodiment of the present invention (unlocked state).

[0025] In the attached diagram: 1-Door guide rail frame; 2-Lock hook; 3-Lock hook connecting plate; 4-Lock hook seat; 5-Quadrilateral linkage mechanism; 6-Steel wire rope pull line; 7-Fixed bracket; 8-Pull line sleeve; 9-Fastener; 10-Lock hook seat bracket; 11-Torsion spring. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] In this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] This utility model provides a technical solution: an elevator landing door unlocking transmission mechanism for emergency opening of landing door locks, comprising:

[0032] The transmission assembly has a fixed end and a movable end. The fixed end is fixed to the lock hook bracket (or a nearby fulcrum), and the movable end can move relative to it.

[0033] A connecting component, which is connected to and operates synchronously with the lock hook of the landing door lock;

[0034] A guide assembly is mounted on the door guide rail frame by a fixing assembly and maintains a preset distance from the transmission assembly;

[0035] A traction component, one end of which is connected to the movable end of the transmission component, and pulling the traction component can drive the movable end to move.

[0036] Fasteners for securing the transmission assembly, connection assembly, guide assembly, and traction assembly.

[0037] Specifically, in this embodiment, the transmission component is a quadrilateral linkage mechanism, which consists of four links connected by hinges to form a rhomboid structure. The fixed end is the lower horizontal link, and the movable end is the upper horizontal link. It is provided with an arc-shaped guide surface that contacts the locking hook connecting plate to ensure that the movable end can smoothly drive the connecting component during movement. The upper horizontal link moves up and down by folding, and its diagonal pivot is designed with a torsion spring to force it to fold and return to its original position.

[0038] Specifically, in this embodiment, the connecting component is a lock hook connecting plate; the lock hook connecting plate is fixedly linked with the lock hook to ensure that the lock hook is unlocked.

[0039] Specifically, in this embodiment, the guide component is a pull cable sleeve; the pull cable sleeve is a corrugated flexible hose, and its end is provided with a limiting clamp to enhance the protection and limiting of the traction component.

[0040] Specifically, in this embodiment, the traction component is a steel wire rope, and the angle between its traction direction and the movement direction of the moving end of the transmission component is less than 30° to ensure effective transmission of tension.

[0041] Specifically, in this embodiment, the fixing component is a fixing bracket; the pull wire sleeve is installed on the fixing bracket; and the fixing bracket is installed on the door guide rail frame by the fasteners.

[0042] Specifically, in this embodiment, the quadrilateral linkage mechanism is in a folded reset state when not in operation.

[0043] Implementation Case:

[0044] Please see Figure 1 and Figure 2 An elevator landing door unlocking transmission mechanism is mainly used to open the door lock of the elevator landing door in an emergency. Its specific structure includes the following key parts:

[0045] Quadrilateral linkage mechanism 5: This is the core component of the entire transmission mechanism, consisting of four linkages connected by hinges to form a quadrilateral structure. The lower horizontal linkage is reliably fixed to the lock hook support bracket 10 to ensure the stability of the entire mechanism; while the upper horizontal linkage is designed to move up and down within a certain range to unlock the lock hook.

[0046] Lock hook connecting plate 3: This connecting plate is firmly fixed to the lock hook 2 and can move synchronously with the lock hook 2. Its function is to transmit the movement of the quadrilateral linkage mechanism 5 to the lock hook 2, thereby driving the lock hook 2 to complete the action of disengaging from the lock hook seat 4.

[0047] The cable sleeve 8 is installed on the door guide frame 1 via the fixed bracket 7 and maintains a preset distance from the quadrilateral linkage mechanism 5. The main function of the cable sleeve 8 is to protect and guide the steel wire rope, ensuring that the steel wire rope is not disturbed by external factors during movement.

[0048] Wire rope pull 6: One end of which is firmly fixed to the upper horizontal connecting rod of the quadrilateral linkage mechanism 5. When the wire rope pull 6 is pulled, it can directly pull the upper horizontal connecting rod to move up and down, thereby realizing the entire unlocking transmission process.

[0049] Fastener 9: Used to securely fasten the various components together, ensuring the structural stability and reliability of the entire transmission mechanism.

[0050] Torsion spring 11: Used to force the quadrilateral linkage mechanism 5 to fold and reset, ensuring that the normal operation of the locking hook 2 is not affected.

[0051] In actual unlocking operations, when it is necessary to open the elevator landing door urgently, the operator only needs to pull the steel wire rope 6. At this time, the steel wire rope 6 will pull the upper horizontal link of the quadrilateral linkage mechanism 5 to move upward. During the movement, the upper horizontal link will lift the lock hook connecting plate 3, thereby causing the lock hook 2 to disengage from the lock hook seat 4, and finally realize the opening of the elevator landing door.

[0052] The working principle of this utility model is as follows: Figure 1 As shown, in this embodiment, the lower horizontal link of the quadrilateral linkage mechanism 5 is firmly fixed to the hook seat bracket 10 by a suitable fastener 9, ensuring that the entire mechanism will not shift during normal operation. The hook connecting plate 3 is fixed to the side of the hook 2 by the fastener 9, ensuring that the two can move synchronously.

[0053] The pull cable sleeve 8 is installed on the side of the door guide frame 1 via a fixed bracket 7, maintaining a certain distance from the quadrilateral linkage mechanism 5. This design ensures that the pull cable sleeve 8 protects and guides the wire rope pull 6 without interfering with the movement of the quadrilateral linkage mechanism 5. The end of the wire rope pull 6 is fixed at an appropriate position on the upper horizontal linkage, ensuring that the tension is evenly transmitted when the wire rope pull 6 is pulled, allowing the upper horizontal linkage to move smoothly upward.

[0054] Reset state

[0055] Under normal circumstances, the quadrilateral linkage mechanism 5 is in a folded state under the action of the torsion spring 11. At this time, the locking hook 2 and the locking hook seat 4 are tightly engaged to ensure that the elevator landing door is locked and to ensure the safe operation of the elevator.

[0056] Unlocking process

[0057] When an emergency opening of the elevator landing door is required, the operator pulls the steel wire rope 6 upwards. Under the pull, the upper horizontal link of the quadrilateral linkage mechanism 5 is pulled upwards. As the upper horizontal link rises, it pushes the lock hook connecting plate 3 upwards, thereby causing the lock hook 2 to disengage from the lock hook seat 4, realizing the unlocking action of the elevator landing door (e.g., Figure 2 (As shown). When the operator releases the wire rope 6, the quadrilateral linkage 5 will automatically fold and reset under the action of the torsion spring 11, returning the entire transmission mechanism to its initial state.

[0058] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0059] Space utilization optimization: The quadrilateral linkage mechanism, with its unique folding motion characteristics, greatly reduces the requirement for axial space. This allows the mechanism to better adapt to the confined installation environment near the elevator landing door lock hook seat, without requiring large-scale modifications to the main structure of the door guide frame, thus reducing installation difficulty and cost.

[0060] Significantly improved reliability: The linkage transmission system ensures more even force distribution and more controllable movement trajectory throughout the unlocking process. This design effectively avoids the jamming problem that easily occurs in traditional shaft-operated unlocking methods, ensuring that the unlocking action can be completed stably and reliably, and improving the success rate of elevator door opening in emergency situations.

[0061] Enhanced ease of maintenance: This utility model adopts a modular design concept, with a clear and reasonable layout of each component. During inspection and maintenance, there is no need to disassemble major components such as the door guide rail frame, allowing for convenient inspection and replacement of each component, greatly reducing maintenance costs and time, and improving the elevator's operating efficiency and reliability.

[0062] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An elevator landing door unlocking transmission mechanism for emergency opening of landing door locks, characterized in that, include: A transmission assembly having a fixed end and a movable end, wherein the fixed end is fixed to the lock hook bracket and the movable end can move relative to it. A connecting component, which is connected to and operates synchronously with the lock hook of the landing door lock; A guide assembly is mounted on the door guide rail frame by a fixing assembly and maintains a preset distance from the transmission assembly; A traction component, one end of which is connected to the movable end of the transmission component, and pulling the traction component can drive the movable end to move. Fasteners for securing the transmission assembly, connection assembly, guide assembly, and traction assembly.

2. The elevator landing door unlocking transmission mechanism according to claim 1, characterized in that: The transmission component is a quadrilateral linkage mechanism, consisting of four links connected by hinges to form a rhomboid structure. The fixed end is the lower horizontal link, and the movable end is the upper horizontal link. It is provided with an arc-shaped guide surface that contacts the locking hook connecting plate. The upper horizontal link moves up and down by folding. Its diagonal pivot is designed with a torsion spring to force it to fold back to its original position.

3. The elevator landing door unlocking transmission mechanism according to claim 1, characterized in that: The connecting component is a locking hook connecting plate; the locking hook connecting plate is fixedly linked with the locking hook.

4. The elevator landing door unlocking transmission mechanism according to claim 1, characterized in that: The guide component is a pull cable sleeve; the pull cable sleeve is a corrugated flexible hose with a limiting clamp at its end to enhance the protection and limiting of the traction component.

5. The elevator landing door unlocking transmission mechanism according to claim 4, characterized in that: The traction component is a steel wire rope, and the angle between its traction direction and the movement direction of the moving end of the transmission component is less than 30°.

6. The elevator landing door unlocking transmission mechanism according to claim 4, characterized in that: The fixing component is a fixing bracket; the pull wire sleeve is installed on the fixing bracket; the fixing bracket is installed on the door guide rail frame by the fasteners.

7. The elevator landing door unlocking transmission mechanism according to claim 2, characterized in that: The quadrilateral linkage mechanism is in a folded and reset state when not in operation.

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