Elevator door device applied to active identification anti-collision elevator

Abstract

An elevator door device applied to an active recognition anti-collision elevator comprises an elevator door beam, a driving motor, a synchronizing mechanism, a sliding block and an elevator car door, the driving motor and the synchronizing mechanism are installed on the elevator door beam, a sliding rail is arranged on the elevator door beam, the sliding block is arranged on the sliding rail in a matched mode and connected with the synchronizing mechanism, and the elevator car door is hung on the sliding block and moves along with the sliding block. The driving motor drives the sliding block to move along the sliding rail through the synchronizing mechanism; the active recognition anti-collision device is installed on the car door, the light curtain detector sends a detection light curtain to the elevator opening, the controller reads a light curtain detection signal, and when the terminal controller receives the detection signal, the terminal controller sends a door opening signal to the driving motor so as to open the elevator door, so that collision between an object and the elevator door is avoided; whether an object exists at an elevator opening or not can be detected in real time through the light curtain emitter, the function of actively recognizing obstacles is achieved, when the object approaches, the elevator door is actively opened, so that collision is avoided, initiative is higher, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-collision elevator doors, in particular to an elevator door device used for actively identifying anti-collision elevators. Background Art

[0002] With the acceleration of urbanization, elevators have become an indispensable means of vertical transportation in modern buildings. However, accidents involving elevator doors colliding with obstacles such as pedestrians and cargo during closing are common, potentially damaging the doors and injuring passengers.

[0003] Traditional elevator door anti-collision devices mostly adopt passive protection methods, such as the high-strength anti-collision elevator door disclosed in the Chinese utility model patent application number CN202221209289.4, which includes left and right hanging plates. The left and right door panels are respectively hinged on the left and right hanging plates. The left and right door panels can swing around the hinge points along the inward and outward directions of the frame, and slide toward or away from the left and right hanging plates; the back of each door panel is provided with an upper rib, a serrated rib and a lower rib from top to bottom; it also includes a sill with a through groove, a first slide and a second slide are provided on both sides of the through groove, and a sliding mechanism is provided at the lower end of each door panel. The sliding mechanism includes a base and a buffer assembly on the base, and a first slider and a second slider are provided at both ends of the buffer assembly, respectively, and each slider is embedded in the slide corresponding to the through groove. The elevator door is configured with a hinged connection between the door panel and the hanging plate, and is equipped with a buffer component. When the elevator door is impacted, the door panel swings slightly around the hinge point, and the door panel slider can effectively absorb the impact force on the elevator door with the help of the buffer component.

[0004] However, this method of improving the elevator's anti-collision function by increasing the thickness of the elevator door beam will not only significantly increase the manufacturing cost of the elevator, but also increase the difficulty of installing the elevator door. Moreover, this method cannot fundamentally solve the problem of the elevator door being hit. Even if the strength of the elevator door is improved, it may still cause damage to the internal structure after being hit, thus posing certain safety hazards. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an elevator door device for actively identifying and preventing collisions in elevators.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] An elevator door device for an active identification and collision avoidance elevator comprises an elevator door beam, a drive motor, a synchronization mechanism, a slider, and a car door. The drive motor and synchronization mechanism are mounted on the elevator door beam, a horizontally extending slide rail is provided on the elevator door beam, the slider slides in engagement with the slide rail and is connected to the synchronization mechanism, the car door is hoisted on the slider and moves with the slider, the drive motor drives the slider along the slide rail via the synchronization mechanism, thereby driving the car door to open or close; an active identification and collision avoidance device is also mounted on the car door, the active identification and collision avoidance device comprising a light curtain detector mounted on the closed side of the car door and a controller for identifying detection signals, one end of the controller being connected to the light curtain detector via a cable, the other end of the controller being connected to the drive motor, the light curtain detector emitting a fan-shaped light beam toward the outside of the car door, thereby forming a detection zone at the elevator entrance. When an object is present in the detection zone, the light curtain detector transmits the detection signal to the controller for identification, and the controller controls the drive motor to open the car door or keep it open.

[0008] Furthermore, the car door is a center-split door composed of two elevator door panels, and the sliders are provided in two groups corresponding to the two elevator door panels and are respectively connected to the synchronization mechanism. The synchronization mechanism drives the two groups of sliders to move relative to each other, thereby driving the two elevator door panels to open or close synchronously.

[0009] Furthermore, the light curtain detector includes a light curtain transmitter for emitting a detection light beam and a light curtain receiver for receiving the light beam. The light curtain transmitter transmits a detection light curtain toward the elevator entrance. When there is an object in the detection area, the detection light beam will be reflected onto the light curtain receiver to form a detection signal.

[0010] Furthermore, the light curtain transmitter and the light curtain receiver are respectively installed on the side where the two elevator door panels are closed to each other and close to the edge of the elevator door panels; when the elevator door panels are in a fully open state, the detection light curtain emitted by the light curtain transmitter covers the entire elevator entrance, and in the process of closing the elevator door panels, the coverage area of the detection light curtain at the elevator entrance gradually decreases until the detection light curtain is closed after the elevator door panels are fully closed.

[0011] In the present invention, the synchronization mechanism includes two groups of guide wheels respectively installed on the left and right sides of the elevator door beam, a transmission belt horizontally matched between the two groups of guide wheels, and a driving wheel fixedly connected to one of the guide wheels on one side. The slider is fixedly connected to the transmission belt, and the drive motor drives the transmission belt to move by driving the drive wheel to rotate. The slider fixed on the transmission belt moves with the transmission belt.

[0012] Furthermore, a contact switch cooperating with a slider is provided on the elevator door beam, and the contact switch is connected to the drive motor. When the car door is fully opened or fully closed, the contact switch is turned on, thereby controlling the drive motor to stop operating.

[0013] In the present invention, the car door is a side-opening door composed of two or three elevator door panels stacked in sequence. The light curtain transmitter is installed on the elevator door panel near the outside of the elevator entrance and is located at the edge of the closed side of the elevator door panel. The light curtain receiver is installed at the edge of the door frame. When the elevator door panel is closed, the light curtain transmitter and the light curtain receiver are adjacent to each other.

[0014] In the present invention, the car door is also a center-split door consisting of four or six elevator door panels, and the elevator door panels on both sides of the center line are stacked in sequence. At this time, the light curtain transmitter and the light curtain receiver are respectively installed on the elevator door panels close to the outside of the elevator entrance, and are located at the edge position of the side where the two elevator door panels are closed to each other. When the elevator door panels are closed, the light curtain transmitter and the light curtain receiver are adjacent.

[0015] The utility model has the following advantages and beneficial effects:

[0016] By installing an active identification and anti-collision device on the car door, the device uses a light curtain detector to send a detection light curtain to the elevator entrance to form a detection area. The controller reads the light curtain detection signal and connects to the elevator door opening and closing device. When the terminal controller receives the detection signal, the terminal controller sends a door opening signal to the drive motor to open the elevator door to avoid collision between objects and the elevator door. The fan-shaped light curtain emitted by the light curtain transmitter can detect in real time whether there are objects at the elevator entrance, realizing the function of active obstacle identification. When an object approaches, the elevator door is actively opened to avoid collision, which is more proactive and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 Schematic diagram of the elevator door device in this embodiment;

[0019] Figure 2 This is a schematic diagram of the active identification anti-collision device in this embodiment;

[0020] Figure 3 This is a schematic diagram of the installation of the active identification and anti-collision device in this embodiment;

[0021] Figure 4 This is a schematic diagram of a side-opening door with two elevator door panels in this embodiment;

[0022] Figure 5Schematic diagram of a side-opening door with three elevator door panels in this embodiment;

[0023] Figure 6 This is a schematic diagram of a center-split door with four elevator door panels in this embodiment;

[0024] Figure 7 Schematic diagram of a center-split door with six elevator door panels in this embodiment. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention, but the present invention is not limited to the following embodiments.

[0026] like Figures 1 to 3 As shown, this embodiment discloses an elevator door device for actively identifying and anti-collision elevators, including an elevator door beam 1, a drive motor 2, a synchronization mechanism 3, a slider 4 and a car door 5. The drive motor 2 and the synchronization mechanism 3 are installed on the elevator door beam 1, and a horizontally extending slide rail 11 is provided on the elevator door beam 1. The slider 4 slides on the slide rail 11 and is connected to the synchronization mechanism 3. The car door 5 is hoisted on the slider 4 and moves with the slider 4. The drive motor 2 drives the slider 4 to move along the slide rail 11 through the synchronization mechanism 3, thereby driving the car door 5 to open or close. Preferably, the car door 5 is a center-split door composed of two elevator door panels. The slider 4 is provided with two groups corresponding to the two elevator door panels and is respectively connected to the synchronization mechanism 3. The synchronization mechanism 3 drives the two groups respectively. The slider 4 moves relative to each other, thereby driving the two elevator door panels to open or close synchronously; specifically, the car door 5 is also equipped with an active identification and anti-collision device 6, which includes a light curtain detector 61 installed on the closed side of the elevator door panel and a controller 62 for identifying the detection signal. One end of the controller 62 is connected to the light curtain detector 61 through a cable 63, and the other end of the controller 62 is connected to the drive motor 2. The light curtain detector 61 emits a fan-shaped light beam to the outside of the car door 5, thereby forming a detection area 60 at the elevator entrance. When there is an object in the detection area 60, the light curtain detector 61 transmits the detection signal to the controller 62 for identification, and then the controller 62 controls the drive motor 2 to open the car door 5 or keep the car door 5 open.

[0027] In this embodiment, the light curtain detector 61 includes a light curtain transmitter 611 for emitting a detection light beam and a light curtain receiver 612 for receiving the light beam. The light curtain transmitter 611 transmits a detection light curtain to the elevator entrance. When there is an object in the detection area 60, the detection light beam will be reflected to the light curtain receiver 612 to form a detection signal. Preferably, the light curtain transmitter 611 and the light curtain receiver 612 are respectively installed on the side where the two elevator door panels are closed to each other and close to the edge of the elevator door panels. Specifically, when the elevator door panels are in a fully open state, the detection light curtain emitted by the light curtain transmitter 611 covers the entire elevator entrance. During the closing process of the elevator door panels, the coverage area of the detection light curtain at the elevator entrance gradually decreases until the detection light curtain is closed after the elevator door panels are fully closed.

[0028] Not limited to the above embodiments, Figure 4-5 As shown, the car door 5 can also be a side-opening door composed of two or three elevator door panels stacked in sequence. In this case, the light curtain transmitter 611 is installed on the elevator door panel near the outside of the elevator entrance and is located at the edge of the closed side of the elevator door panel. The light curtain receiver 612 is installed at the edge of the door frame. When the elevator door panel is closed, the light curtain transmitter 611 and the light curtain receiver 612 are adjacent.

[0029] Not limited to the above embodiments, Figure 6-7 As shown, the car door 5 can also be a center-split door consisting of four or six elevator door panels, with the elevator door panels on both sides of the center line stacked in sequence. In this case, the light curtain transmitter 611 and the light curtain receiver 612 are respectively installed on the elevator door panels near the outside of the elevator entrance, and are located at the edge position of the side where the two elevator door panels are closed to each other. When the elevator door panels are closed, the light curtain transmitter 611 and the light curtain receiver 612 are adjacent to each other.

[0030] In this embodiment, the synchronization mechanism 3 includes two groups of guide wheels 31 respectively installed on the left and right sides of the elevator door beam 1, a transmission belt 32 horizontally matched between the two groups of guide wheels 31, and a driving wheel 33 fixedly connected to one side of the guide wheel 31. Preferably, the transmission belt 32 can be a chain or a belt, and the slider 4 is fixedly connected to the transmission belt 32. The drive motor 2 drives the transmission belt 32 to move by driving the driving wheel 33 to rotate, and the slider 4 fixed on the transmission belt 32 moves with the transmission belt 32.

[0031] Furthermore, the elevator door beam 1 is provided with a contact switch 12 that cooperates with the slider 4. The contact switch 12 is connected to the drive motor 2. When the slider 4 carries the car door 5 to be fully opened or fully closed, the contact switch 12 is turned on, thereby controlling the drive motor 2 to stop operating.

[0032] Furthermore, the slider 4 on one side is also provided with a door knife for driving the landing door to move together.

[0033] The above contents described in this specification are merely examples of the present invention. Those skilled in the art in the technical field to which the present invention belongs may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

Claims

1. An elevator door device for actively identifying and preventing collisions in an elevator, comprising an elevator door beam (1), a drive motor (2), a synchronization mechanism (3), a slider (4), and a car door (5), wherein the drive motor (2) and the synchronization mechanism (3) are mounted on the elevator door beam (1), a horizontally extending slide rail (11) is provided on the elevator door beam (1), the slider (4) is slidably engaged on the slide rail (11) and is connected to the synchronization mechanism (3), the car door (5) is hoisted on the slider (4) and moves with the slider (4), the drive motor (2) drives the slider (4) to move along the slide rail (11) through the synchronization mechanism (3), thereby driving the car door (5) to open or close; and characterized in that: The car door (5) is also equipped with an active identification and anti-collision device (6), which includes a light curtain detector (61) installed on the closed side of the car door (5) and a controller (62) for identifying the detection signal. One end of the controller (62) is connected to the light curtain detector (61) through a cable (63), and the other end of the controller (62) is connected to the drive motor (2). The light curtain detector (61) emits a fan-shaped light beam to the outside of the car door (5) to form a detection area (60) at the elevator entrance. When there is an object in the detection area (60), the light curtain detector (61) transmits the detection signal to the controller (62) for identification. The controller (62) opens the car door (5) or keeps the car door (5) open by controlling the drive motor (2).

2. The elevator door device for active identification and anti-collision elevator according to claim 1, characterized in that: The car door (5) is a center-split door consisting of two elevator door panels. Two groups of sliders (4) are provided corresponding to the two elevator door panels and are respectively connected to the synchronization mechanism (3). The synchronization mechanism (3) drives the two groups of sliders (4) to move relative to each other, thereby driving the two elevator door panels to open or close synchronously.

3. The elevator door device for active identification and anti-collision elevator according to claim 2, characterized in that: The light curtain detector (61) includes a light curtain transmitter (611) for transmitting a detection light beam and a light curtain receiver (612) for receiving the light beam. The light curtain transmitter (611) transmits a detection light curtain toward the elevator entrance. When an object exists in the detection area (60), the detection light beam is reflected onto the light curtain receiver (612), thereby forming a detection signal.

4. The elevator door device for active identification and anti-collision elevator according to claim 3, characterized in that: The light curtain transmitter (611) and the light curtain receiver (612) are respectively installed on one side of the two elevator door panels that are closed to each other and close to the edge of the elevator door panels; when the elevator door panels are in a fully open state, the detection light curtain emitted by the light curtain transmitter (611) covers the entire elevator entrance, and during the process of closing the elevator door panels, the coverage area of the detection light curtain at the elevator entrance gradually decreases until the detection light curtain is closed after the elevator door panels are fully closed.

5. The elevator door device for active identification and anti-collision elevator according to claim 1, characterized in that: The synchronization mechanism (3) includes two sets of guide wheels (31) respectively installed on the left and right sides of the elevator door beam (1), a transmission belt (32) horizontally matched between the two sets of guide wheels (31), and a driving wheel (33) fixedly connected to one side of the guide wheel (31). The slider (4) is fixedly connected to the transmission belt (32). The driving motor (2) drives the driving wheel (33) to rotate to drive the transmission belt (32). The slider (4) fixed on the transmission belt (32) moves with the transmission belt (32).

6. The elevator door device for active identification and anti-collision elevator according to claim 1, characterized in that: The elevator door beam (1) is also provided with a contact switch (12) that cooperates with the slider (4). The contact switch (12) is connected to the drive motor (2). When the car door (5) is fully opened or fully closed, the contact switch (12) is turned on, thereby controlling the drive motor (2) to stop operating.

7. The elevator door device for active identification and anti-collision elevator according to claim 1, characterized in that: The car door (5) is a side-opening door composed of two or three elevator door panels stacked in sequence. The light curtain transmitter (611) is installed on the elevator door panel near the outside of the elevator entrance and is located at the edge of the closed side of the elevator door panel. The light curtain receiver (612) is installed at the edge of the door frame. When the elevator door panel is closed, the light curtain transmitter (611) and the light curtain receiver (612) are adjacent to each other.

8. The elevator door device for active identification and anti-collision elevator according to claim 1, characterized in that: The car door (5) is also a center-split door consisting of four or six elevator door panels, and the elevator door panels on both sides of the center line are stacked in sequence. At this time, the light curtain transmitter (611) and the light curtain receiver (612) are respectively installed on the elevator door panels near the outside of the elevator entrance, and are located at the edge position of the side where the two elevator door panels are closed to each other. When the elevator door panels are closed, the light curtain transmitter (611) and the light curtain receiver (612) are adjacent.

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