Elevator door linkage control mechanism

Abstract

The present invention discloses an elevator door linkage control mechanism, which includes a control module, a car door, a car door driving mechanism, a landing door on each floor, a landing door driving mechanism corresponding to the landing door and controlling the opening and closing of the landing door, and a landing door partition switch. It includes a driving trigger mechanism installed outside the car and an engagement switch installed at the corresponding position of each landing door. The control module controls the driving trigger mechanism to act to trigger the action of the engagement switch corresponding to the landing door that is level with the car door, and the engagement switch triggers the locking or unlocking of the landing door locking circuit of the corresponding floor; during normal operation, the control module controls the driving trigger mechanism corresponding to the corresponding floor to trigger or disengage from the engagement switch when opening and closing the door, so that the engagement switch acts to lock or unlock the landing door locking circuit, and the control module respectively controls the car door driving mechanism and the landing door driving mechanism to act according to the control timing to open / close the car door and the landing door, and the control is accurate and reliable.

Description

Technical Field

[0001] The present invention relates to an elevator control, and particularly to an elevator door linkage control mechanism. Background Art

[0002] In traditional elevators, a linkage door knife is provided between the car door and the landing door. When the car door is opened, the landing door will be opened synchronously. The door knife is installed on the car, and a door lock roller is installed on the landing door. When the landing door needs to be opened, the door knife clamps the door lock roller. When the moving distance of the door lock roller exceeds the unlocking area travel, the landing door opens. When the landing door does not need to be opened, the door lock roller will also pass through the door knife. Therefore, when the elevator is running, it is difficult to avoid friction between the door lock roller and the door knife, resulting in noise every time the elevator passes the landing door position. Moreover, when controlling the opening of the landing door, the car door is the active door and the landing door is the passive door. The car door must drive the landing door to open, which not only causes the car door and the landing door to open and close out of sync, resulting in misalignment between the car door and the landing door at the opening end position, making the entire elevator entrance uneven and unsightly, but also when approaching the closing end, the clamping element of the door coupler gradually opens, causing the landing door locking element driven by the door lock roller on the landing door to collide during locking, resulting in additional wear and noise.

[0003] For this reason, the reference patent CN2017111340933 discloses an elevator door machine system. A linkage rod driven by the car door drive mechanism is provided at the car door drive mechanism, and a connecting sleeve that can be inserted and matched with the linkage rod is provided at the landing door drive mechanism. The connecting sleeve is connected to the landing door lock swing rod and at the same time connected to the landing door drive reduction mechanism. When the elevator is running normally, after the car is leveled, the action of the car door drive mechanism can drive the linkage rod to be inserted and matched with the connecting sleeve. During the opening process of the car door, after the linkage rod drives the connecting sleeve to move to release the landing door lock, as the car door opens, the connecting sleeve drives the landing door drive reduction mechanism to act, and the landing door drive reduction mechanism drives the landing door to open, thus realizing the linkage opening of the car door and the landing door. However, although this technology solves the problem of noise generated by friction between the car door and the landing door during elevator operation, during normal operation, the car door is still the active door and the landing door is the passive door. The car door must drive the landing door to open, which not only causes the car door and the landing door to open and close out of sync, resulting in misalignment between the car door and the landing door at the opening end position, making the entire elevator entrance uneven and unsightly, but also when the opening width is large, such as 4m, the opening force is significantly insufficient, affecting the smooth opening of the car door, especially the landing door. Moreover, in this solution, there is no independent landing door partition switch mechanism. When there is a problem with the opening of the car door, the elevator cannot determine whether the car has reached the corresponding landing. In case of a failure, there are obvious safety hazards.

[0004] Therefore, there is an urgent need for an elevator door linkage control mechanism that can solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide an elevator door linkage control mechanism. When the elevator is at the leveling position, the control module directly controls the cam motor to trigger the action of the landing door partition switch, so as to trigger the landing door locking circuit of the corresponding floor, with high safety and reliability. During normal operation, the control module directly controls the car door drive mechanism and the landing door drive mechanism to open / close the car door and the landing door. There is no mechanical linkage mechanism between the car door and the landing door, with fewer faults, accurate opening and closing, and reliability.

[0006] To achieve the above object, the present invention discloses an elevator door linkage control mechanism, which includes a control module, a car door, a car door drive mechanism, a landing door on each floor, a landing door drive mechanism corresponding to and controlling the opening and closing of the landing door, and a landing door partition switch. The landing door partition switch includes a driving trigger mechanism installed outside the car and an engaging switch installed at the corresponding position of each landing door. The control module controls the driving trigger mechanism to act to trigger the action of the engaging switch corresponding to the landing door at the same level as the car door, and the engaging switch triggers the locking or unlocking of the landing door locking circuit of the corresponding floor. During normal operation, the control module controls the driving trigger mechanism at the corresponding floor to trigger or disengage from the engaging switch when opening and closing the door, so that the engaging switch acts to lock or unlock the landing door locking circuit, and the control module respectively controls the car door drive mechanism and the landing door drive mechanism to open / close the car door and the landing door according to the control timing.

[0007] Compared with the prior art, on the one hand, the landing door partition switch mechanism of the present invention is independently installed outside the car and at the corresponding leveling position, not affected by the actions of the car door and the landing door, and is directly controlled by the control module, with high safety and reliability. On the other hand, during normal operation of the present invention, the control module directly controls the car door drive mechanism and the landing door drive mechanism to open / close the car door and the landing door according to the control timing. There is no mechanical linkage mechanism between the car door and the landing door, with accurate opening and closing and reliability.

[0008] Preferably, the control module includes an elevator control cabinet, a car door controller, and a landing door controller installed on each floor. The elevator control cabinet is electrically connected to the car door controller and the landing door controller respectively. The car door controller controls the action of the car door drive mechanism, and the landing door controller controls the landing door drive mechanism of the corresponding floor. The car door controller can wirelessly communicate with the landing door controller corresponding to the landing door at the leveling position. The elevator control cabinet issues corresponding car door opening / closing commands and landing door opening / closing commands to the car door controller when opening and closing the door, and the car door controller wirelessly transmits the landing door opening / closing commands to the landing door controller corresponding to the leveling floor. This solution realizes the control of the landing door through the wireless communication between the car door controller and the corresponding landing door controller, with high control accuracy and good communication stability.

[0009] Specifically, the car door controller monitors the opening and closing amplitudes of the car door, and outputs corresponding car door closed-in-place signals to the elevator control cabinet after the car door is closed to a preset amplitude and completely closed; the landing door controller monitors the opening and closing amplitudes of the landing door, and outputs a corresponding landing door opened-to-1 / 3 position signal to the elevator control cabinet when the landing door is opened to a preset amplitude, and outputs a corresponding landing door closed-in-place signal to the elevator control cabinet after the landing door is completely closed. The control timing includes the chronological order and the opening and closing states of the car door and the landing door. The opening and closing states include the opening state, the closing state, and the opening amplitude.

[0010] More specifically, during normal operation, when the car reaches the target landing, the elevator control cabinet controls the drive trigger mechanism to actuate to trigger the landing door partition switch according to the leveling signal, and unlocks the landing door locking circuit. The elevator control cabinet issues a landing door opening command according to the unlocking signal of the landing door locking circuit and transmits it to the landing door controller through the car controller. The landing door controller controls the landing door drive mechanism to actuate to open the landing door according to the landing door opening command. The elevator control cabinet sends a car door opening command to the car door controller according to the landing door opened-in-place signal. The car door controller controls the car door drive mechanism to actuate to open the car door according to the car door opening command; when the elevator door is closed, the car door controller sends a car door closing command to the car door controller. The car door controller controls the car door drive mechanism to actuate to close the car door according to the car door closing command. The elevator control cabinet issues a landing door closing command according to the car door closed-in-place signal and transmits it to the landing door controller corresponding to the landing through the car door controller. The landing door controller controls the landing door drive mechanism to actuate to close the landing door according to the landing door closing command. The elevator control cabinet controls the drive trigger mechanism to actuate to disengage from the engagement switch according to the landing door closed-in-place signal, and the engagement switch resets to control the locking of the landing door locking circuit corresponding to the floor.

[0011] Preferably, when the engagement switch acts to release the locking of the landing door locking circuit, it activates the landing door controller corresponding to the floor, so that the car door controller communicates with the landing door controller corresponding to the floor. Activating the landing door controller corresponding to the floor through the engagement switch prevents the addressing error of the corresponding landing door controller due to incorrect control commands, resulting in the accidental opening of other landing doors.

[0012] Preferably, the drive trigger mechanism includes a trigger member and a trigger drive member that drives the trigger member to actuate to trigger the engagement switch. The control module controls the trigger drive member to actuate to drive the trigger member to trigger or move away from the engagement switch.

[0013] Specifically, the trigger driving member is a cam motor, and the trigger member is a linkage rod movably installed outside the car and driven by the cam of the cam motor to move.

[0014] Preferably, the car door moves up and down in a direction perpendicular to the horizontal plane to open and close the door, and the position of the bottom surface of the car corresponding to the car door is a flat surface to cooperate with the car door to enclose the car.

[0015] Preferably, the landing door moves up and down in a direction perpendicular to the horizontal plane to open and close the door, and the position of the landing door corresponding to the floor ground is a flat surface to cooperate with the landing door to enclose the elevator hoistway.

[0016] Preferably, the engaging portion of the engaging switch cooperating with the driving trigger mechanism is installed on the door frame of the landing door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the control structure diagram of the elevator door linkage control mechanism of the present invention.

[0018] Figure 2 is the door opening control flow chart of the elevator door linkage control mechanism of the present invention.

[0019] Figure 3 is the door closing control flow chart of the elevator door linkage control mechanism of the present invention.

[0020] Figure 4 is the door opening and closing timing diagram of the elevator door linkage control mechanism of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to explain in detail the technical content, structural features, achieved purposes and effects of the present invention, the following is described in detail in conjunction with the embodiments and with reference to the drawings.

[0022] Refer to Figure 1, the present invention discloses an elevator door linkage control mechanism 100, which includes a control module, a car door, a car door drive mechanism 22, a landing door 101 on each floor, a landing door drive mechanism 21 corresponding to the landing door 101 and controlling the opening and closing of the landing door 101, and landing door zone switches (23, 33). The landing door zone switches (23, 33) include a drive trigger mechanism 23 installed outside the car 20 and an engagement switch 33 installed at the corresponding position of each landing door. The control module controls the drive trigger mechanism 23 to act to trigger the corresponding engagement switch 33 of the landing door 101 corresponding to the car landing, and the engagement switch 33 triggers the corresponding landing door locking circuit 32 to lock or unlock. During normal operation, the control module controls the drive trigger mechanism 23 at the corresponding floor to trigger or disengage from the engagement switch 33 when opening and closing the door, so that the engagement switch 33 acts to lock or unlock the landing door locking circuit 32. The control module respectively controls the car door drive mechanism 22 and the landing door drive mechanism 21 to act to open / close the car door and the landing door according to the control timing.

[0023] Reference Figure 1 , the control module includes an elevator control cabinet 11, a car door controller 13, and a landing door controller 12 installed on each floor and controlling the landing door of the corresponding floor. The elevator control cabinet 11 is electrically connected to the car door controller 13 and the landing door controller 12 respectively. The car door controller 13 communicates wirelessly with the landing door controller 12. The elevator control cabinet 11 issues corresponding car door opening / closing commands to the car door controller 13 when opening and closing the door, and wirelessly transmits the landing door opening / closing commands to the landing door controller 12 corresponding to the current car landing through the car door controller 13. The landing door control is realized through the wireless communication between the car door controller 13 and the landing door controller 12 at the landing, with high control accuracy and good communication stability. The landing door controller 12 of the corresponding floor monitors the state of the landing door of this floor and feeds it back to the elevator control cabinet 11.

[0024] Among them, each landing door controller 12 has corresponding address information. After reaching the target floor, the car door controller 13 issues a communication command to the corresponding address according to the address information of the target floor, and the landing door controller 12 of the target floor (landing) makes an address response to realize wireless communication with the landing door controller 12 of the target floor. Among them, corresponding wireless communication modules are provided on the car door controller 13 and the landing door controller 12, which can support the communication between the car door controller 13 and the landing door controller 12 at the minimum distance when the car is level with the landing door controller 12.

[0025] Among them, the car door controller 13 controls the car door drive mechanism 22 to act, and the landing door controller 12 controls the landing door drive mechanism 21 of the corresponding floor to act.

[0026] Among them, the car door controller 13 and the landing door controller 12 are respectively provided with wireless transceiver modules that can match each other, such as: Bluetooth modules, WIFI modules, etc., and wireless communication is carried out through the wireless transceiver modules.

[0027] Among them, the car door controller 13 monitors the opening and closing amplitudes of the car door, and outputs a corresponding car door closed-in-place signal to the elevator control cabinet after the car door is completely closed; the landing door controller 12 monitors the opening and closing amplitudes of the landing door, and outputs a corresponding landing door opened-to-N position signal to the elevator control cabinet 11 when the landing door is opened to a preset amplitude, and outputs a corresponding landing door closed-in-place signal to the elevator control cabinet after the landing door is completely closed. The control timing includes the chronological order and the opening and closing states of the car door and the landing door. The opening and closing states include the opening state, the closing state, and the opening amplitude. In this embodiment, the landing door opened-to-N position signal is the signal that the landing door is opened to two-thirds. Of course, N can also be other values, which are set by those skilled in the art according to actual needs.

[0028] Among them, when the engagement switch 33 acts to release the lock of the landing door locking circuit, the landing door controller 12 corresponding to the layer is activated, so that the car door controller 13 is wirelessly communicatively connected to the landing door controller 12 corresponding to the layer.

[0029] Among them, the driving trigger mechanism 23 includes a trigger member and a trigger driving member that drives the trigger member to act to trigger the engagement switch. The car door controller 12 controls the trigger driving member to act to drive the trigger member to trigger or move away from the engagement switch 33. Specifically, the trigger driving member is a cam motor, and the trigger member is a linkage rod that is movably installed outside the car and is driven by the cam of the cam motor to move. Among them, the engagement portion of the engagement switch 33 cooperating with the driving trigger mechanism is installed on the door frame of the landing door 101. Of course, it can also be installed at other positions outside the landing door.

[0030] Preferably, the car door moves up and down in a direction perpendicular to the horizontal plane to open and close the door, and the position of the bottom surface of the car 20 corresponding to the car door is a flat surface to cooperate with the car door to enclose the car.

[0031] Preferably, the landing door 101 moves up and down in a direction perpendicular to the horizontal plane to open and close the door, and the corresponding leveling position of the landing door 101 is a flat surface to cooperate with the landing door 101 to enclose the elevator hoistway.

[0032] Among them, there is even an operation module 31 beside the landing door for the user to operate and input control commands to the landing door controller 12, and the landing door controller 12 conveys the control commands to the elevator control cabinet 11. There are also a car door lock 41, a light curtain controller 42 and a UPS controller provided on the car 20. The car 20 moves up and down through a car lifting drive mechanism. Of course, a human-machine interface and a buzzer are also provided on the car 20.

[0033] Reference Figure 2 and Figure 4 During normal operation, the car door controller 13 performs the following steps during the elevator's up and down movement: (S131) Detect whether the car 20 has reached the target landing; (S132) When the car 20 reaches the target landing, send a landing signal to the elevator control cabinet 11. The elevator control cabinet 11 executes step (S111) to control the drive trigger mechanism to actuate according to the landing signal to trigger the engagement switch, and unlock the landing door locking circuit. After the landing door locking circuit is unlocked, it is detected by the elevator control cabinet 11 to obtain the unlocking signal of the landing door locking circuit. The elevator control cabinet 11 executes step (S112) to send a landing door opening command to the car door controller 13 according to the unlocking signal of the landing door locking circuit. The car door controller 13 executes step (S133) to wirelessly send the landing door opening command to the landing door controller 12 on the target landing. The landing door controller 12 executes step (S121) to control the landing door drive mechanism 21 on this landing to actuate to open the landing door 101, and when the landing door is opened to two-thirds, execute step (S121): Send a signal that the landing door is opened to two-thirds to the elevator control cabinet 11. The elevator control cabinet 11 executes step (S113) to send a car door opening command to the car door controller 13 according to the signal that the landing door is opened to two-thirds. The car door controller 13 executes step (S134) to control the car door drive mechanism 22 to actuate according to the car door opening command, so that the car door drive mechanism 22 controls the car door to open.

[0034] Reference Figure 3 and Figure 4, during normal operation, the working steps of the elevator door linkage control mechanism are as follows: The elevator control cabinet 11 executes step (D111) according to an external control command or after a preset time after the car door and the landing door are opened, and sends a car door closing command to the car door controller 13. The car door controller 13 executes step (D131) to control the car door driving mechanism 22 to act according to the car door closing command, so that the car door driving mechanism 22 controls the car door to close. The elevator control cabinet 11 monitors the closing amplitude of the car door, generates a car door closed in place signal after the car door is closed, and executes step (D132). (D132): Send the car door closed in place signal to the elevator control cabinet 11. The elevator control cabinet executes step (D112): Send a landing door closing command to the car door controller 13 according to the car door closed in place signal. The car door controller 13 executes step (D133) to wirelessly send the landing door closing command to the landing door controller 12. After receiving the landing door closing command, the landing door controller 12 executes step (D122) to control the landing door driving mechanism 21 to act according to the landing door closing command to close the landing door 101. The landing door controller 12 monitors the closing amplitude of the landing door when the landing door is closed, generates a landing door closed in place signal after the landing door is closed, and executes step (D121). (D121): The landing door controller 12 sends a landing door closed in place signal to the elevator controller 11. After receiving the landing door closed in place signal, the elevator control cabinet 11 executes step (D113) to control the driving trigger mechanism 23 to act to disengage from the engagement switch 33 according to the landing door closed in place signal. Subsequently, the engagement switch 33 resets to control the corresponding floor landing door locking circuit 32 to lock.

[0035] Among them, in the maintenance state, the elevator control cabinet 11 directly controls the car door driving mechanism 22 and the landing door driving mechanism 21 of the target floor to act synchronously according to the opening signal to control the car door and the landing door to open synchronously, and controls the car door driving mechanism 22 and the landing door driving mechanism 21 of the target floor to act synchronously according to the closing signal to control the car door and the landing door to close synchronously.

[0036] Among them, the landing door controller 12 obtains the opening signal and closing signal of the elevator control cabinet 11 through the car door controller 13 in a wireless manner (address confirmation), preventing accidental opening of other landing doors far from the car 20 and exposing the hoistway exit, causing people to stumble, and corresponding to the opening and closing of the landing door and the car door from both mechanical and electrical perspectives.

[0037] The above only shows the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. An elevator door linkage control mechanism, characterized in that: It includes a control module, a car door, a car door drive mechanism, a landing door on each floor, a landing door drive mechanism corresponding to the landing door and controlling the opening and closing of the landing door, and a landing door partition switch. The landing door partition switch includes a drive trigger mechanism installed outside the car and an engagement switch installed at the corresponding position of each landing door. The control module controls the drive trigger mechanism to act to trigger the engagement switch corresponding to the landing door at the same floor as the car door, and the engagement switch triggers the locking circuit of the corresponding landing door to lock or unlock; during normal operation, the control module controls the drive trigger mechanism corresponding to the corresponding floor to trigger or disengage from the engagement switch when opening and closing the door, so that the engagement switch acts to lock or unlock the landing door locking circuit, and the control module controls the car door drive mechanism and the landing door drive mechanism to act respectively according to the control timing to open / close the car door and the landing door. The control module includes an elevator control cabinet. During normal operation, when the car reaches the target landing, a landing signal is sent to the elevator control cabinet. The elevator control cabinet controls the drive trigger mechanism to act to trigger the engagement switch according to the landing signal, and unlocks the locking circuit of the corresponding landing door; when the elevator control cabinet receives the landing door closed-in-place signal, it controls the drive trigger mechanism to act to disengage from the engagement switch, and the engagement switch resets to control the locking circuit of the corresponding landing door to lock.

2. The elevator door linkage control mechanism according to claim 1, wherein: The car door controller controls the car door drive mechanism to act, the landing door controller controls the landing door drive mechanism corresponding to the corresponding floor to act. The elevator control cabinet is electrically connected to the car door controller and the landing door controller respectively. The car door controller can communicate wirelessly with the landing door controller corresponding to the landing door at the same floor. The elevator control cabinet sends corresponding car door opening / closing commands and landing door opening / closing commands to the car door controller when opening and closing the door, and the car door controller wirelessly transmits the landing door opening / closing commands to the landing door controller at the same floor.

3. The elevator door linkage control mechanism according to claim 2, characterized in that: The car door controller monitors the opening and closing amplitudes of the car door, and outputs corresponding car door closed-in-place signals to the elevator control cabinet respectively after the car door is closed to the preset amplitude and completely closed; the landing door controller monitors the opening and closing amplitudes of the landing door, and outputs a corresponding landing door opened-to-position-N signal to the elevator control cabinet when the landing door is opened to the preset amplitude, and outputs a corresponding landing door closed-in-place signal to the elevator control cabinet after the landing door is completely closed. The control timing includes the time sequence and the opening and closing states of the car door and the landing door.

4. The elevator door linkage control mechanism according to claim 3, wherein: During normal operation, when the car reaches the target landing, a leveling signal is sent to the elevator control cabinet to unlock the landing door locking circuit. The elevator control cabinet issues a landing door opening command based on the unlocking signal of the landing door locking circuit and conveys it to the landing door controller through the car door controller. The landing door controller controls the landing door driving mechanism to actuate and open the landing door according to the landing door opening command. The elevator control cabinet sends a car door opening command to the car door controller based on the landing door opening to the N-position signal. The car door controller controls the car door driving mechanism to actuate and open the car door according to the car door opening command; when the elevator doors are closing, the elevator control cabinet sends a car door closing command to the car door controller. The car door controller controls the car door driving mechanism to actuate and close the car door according to the car door closing command. The elevator control cabinet issues a landing door closing command based on the car door closing in place signal and wirelessly conveys it to the landing door controller through the car door controller. The landing door controller controls the landing door driving mechanism to actuate and close the landing door according to the landing door closing command, so that the elevator control cabinet controls the locking of the corresponding landing door locking circuit based on the landing door closing in place signal.

5. The elevator door linkage control mechanism according to claim 2, characterized in that: When the engagement switch acts to release the locking of the landing door locking circuit, the corresponding landing door controller is activated, so that the car door controller is communicatively connected to the corresponding landing door controller.

6. The elevator door linkage control mechanism according to claim 1, characterized in that: The drive trigger mechanism includes a trigger member and a trigger drive member that drives the trigger member to actuate and trigger the engagement switch. The control module controls the trigger drive member to actuate and drive the trigger member to trigger or move away from the engagement switch.

7. The elevator door linkage control mechanism according to claim 6, wherein: The trigger drive member is a cam motor, and the trigger member is a linkage rod that is movably installed outside the car and is driven by the cam of the cam motor to move.

8. The elevator door linkage control mechanism according to claim 1, wherein: The car door moves up and down in a direction perpendicular to the horizontal plane to open and close the door. The position of the bottom surface of the car corresponding to the car door is a flat surface to cooperate with the car door to enclose the car.

9. The elevator door linkage control mechanism according to claim 1, characterized in that: The landing door moves up and down in a direction perpendicular to the horizontal plane to open and close the door. The position of the landing door corresponding to the floor ground is a flat surface to cooperate with the landing door to enclose the elevator hoistway.

10. The elevator door linkage control mechanism according to claim 1, characterized in that: The engagement part where the engagement switch cooperates with the drive trigger mechanism is installed on the door frame of the landing door.

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