Single motor controlled two sided elevator door switch device

Abstract

The utility model discloses a kind of two-side elevator door switch devices of single motor control, belong to elevator technical field, including the top plate of being installed on car upper end and the positive and negative rotation motor on top plate, the positive and negative rotation motor is connected with the upper surface of top plate by moving device, one end of the output shaft is fixed with motor gear, rotating shaft is arranged in the positive and negative rotation motor two sides, the rotating shaft is rotatably connected with top plate by stabilizing frame, and one end of the rotating shaft is fixed with car door gear, the elevator door is connected with the other end of rotating shaft by transmission mechanism for driving elevator door opening and closing, the both ends of moving device are provided with brake mechanism for clamping or loosening rotating shaft, the utility model can realize that single motor drives two-side car door switch, simplify control system structure, save cost while reducing elevator self weight, to increase elevator maximum passenger number, more practical and convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a single-motor controlled two-sided elevator door opening and closing device. Background Technology

[0002] A drive-through door elevator, also known as a double-door elevator, is a type of elevator with doors on both sides of the car, allowing people or goods to enter and exit the elevator car from two directions, thus improving the efficiency and flexibility of the elevator.

[0003] Currently, through-door elevators typically use two independent motors to drive the car doors on both sides. Each motor converts rotary motion into linear motion through a reduction mechanism, which drives the door to slide. The two motors need to be coordinated by a control system to ensure that the doors on both sides open and close synchronously.

[0004] However, since two sets of motors are used to drive the opening and closing of the car doors on both sides respectively, it is easy to cause synchronization errors, increase maintenance difficulty, and increase the weight of the car, resulting in a smaller load capacity. Utility Model Content

[0005] The purpose of this invention is to provide a single-motor controlled elevator door opening and closing device that uses mechanical linkage to enable a single motor to drive the opening and closing of both car doors. This simplifies the control system structure, saves costs, and reduces the weight of the elevator itself, thereby increasing the maximum number of passengers in the elevator. It is also more practical and easier to maintain, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a single-motor controlled elevator door opening and closing device, comprising a top plate installed on the upper end of the car and a forward and reverse motor located on the top plate. The forward and reverse motor is connected to the upper surface of the top plate through a moving device. An output shaft is connected to the output end of the forward and reverse motor. A motor gear is fixed to one end of the output shaft. Rotating shafts are arranged on both sides of the forward and reverse motor. The rotating shafts are rotatably connected to the top plate through a stabilizer, and a car door gear is fixed to one end of the rotating shaft.

[0007] Both sides of the top plate are provided with elevator doors that can open and close to the left and right. The elevator doors are connected to the other end of the rotating shaft through a transmission mechanism for driving the elevator doors to open and close. Both ends of the moving device are provided with braking mechanisms for clamping or releasing the rotating shaft.

[0008] Preferably, the moving device includes an electric slide rail and an electric slider slidably connected within the electric slide rail, the forward and reverse motor is fixed to the upper end of the electric slider, the electric slide rail is embedded in the upper surface of the top plate, and the installation direction of the rotating shaft is perpendicular to the installation direction of the electric slide rail.

[0009] Preferably, the braking mechanism includes elastic connectors located at both ends of the electric slide rail and brake calipers for clamping the rotating shaft. The elastic connectors have connecting rods fixed at both ends, and the lower ends of the brake calipers are connected to the connecting rods at both ends of the elastic connectors. The distance between the connecting rods at both ends is changed by adjusting the compression of the elastic connectors, so as to drive the brake calipers to open or clamp.

[0010] Preferably, the elastic connector includes a linkage plate fixed to the end of the electric slide rail, one end of the linkage plate is fixed with a spring, and one end of the spring is fixed with a fixing plate. When the electric slider moves to the fixing plate, the electric slider pushes the fixing plate to move, thereby compressing the spring.

[0011] Preferably, a limit block is engaged on the electric slide rail, the limit block is located at the connection between the fixed plate and the spring, and a touch sensor is fixed on the side of the limit block near the fixed plate.

[0012] Preferably, the brake caliper includes two sets of arc-shaped retainers and a caliper body located inside the retainers. The lower ends of the two sets of retainers are hinged together by a hinge shaft, and a connecting block for connecting to a connecting rod is obliquely fixed to the lower end of the retainer.

[0013] Preferably, the transmission mechanism includes two sets of sprockets and a chain belt sleeved on the two sets of sprockets. One set of sprockets is fixed to the other end of the rotating shaft, and the other set of sprockets is rotatably connected to the side wall of the top plate through a bracket. The upper ends of the left and right doors of the elevator door are respectively fixed with a left door fixing bracket and a right door fixing bracket. The upper end of the left door fixing bracket is fixed on the upper chain belt, and the upper end of the right door fixing bracket is fixed on the lower chain belt.

[0014] Preferably, it also includes a controller fixed to the upper surface of the top plate, the controller being electrically connected to the forward and reverse motor, the moving device and the touch sensor respectively.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model adjusts the position of the forward and reverse motors by using a moving device, so that they can mesh with the corresponding car door gears according to the opening requirements of different side car doors, drive the rotating shaft to rotate, and use the rotating shaft to drive the transmission mechanism, which in turn drives the opening and closing of the corresponding side car doors. This realizes that a single motor drives the opening and closing of both car doors, simplifies the control system structure, saves costs and reduces the weight of the elevator itself, thereby increasing the maximum number of passengers in the elevator, making it more practical and convenient for maintenance.

[0017] 2. This utility model, through the linkage between the moving device and the braking mechanism, can clamp the rotating shaft when the elevator door is closed, thereby restricting the rotation of the rotating shaft and making the transmission mechanism stop stably, ensuring the stability of the elevator door closing. When the elevator door is opened, the clamping restriction on the rotating shaft can be released, ensuring that the transmission mechanism can operate normally and that the elevator door can open smoothly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the mobile device structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the brake caliper structure of this utility model.

[0021] In the diagram: 1. Top plate; 2. Moving device; 3. Forward and reverse motor; 4. Output shaft; 5. Motor gear; 6. Car door gear; 7. Rotating shaft; 8. Stabilizer; 10. Chain belt; 11. Sprocket; 12. Right side door fixing bracket; 13. Left side door fixing bracket; 14. Braking mechanism; 15. Elevator door; 16. Controller; 17. Electric slide rail; 18. Electric slider; 19. Limit block; 20. Fixing plate; 21. Linkage plate; 22. Spring; 23. Cage; 24. Clamp body; 25. Connecting block; 26. Hinge shaft; 27. Connecting rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a single-motor controlled elevator door opening and closing device, including a top plate 1 installed on the upper end of the car and a forward and reverse motor 3 located on the top plate 1. The forward and reverse motor 3 is connected to the upper surface of the top plate 1 through a moving device 2. The output end of the forward and reverse motor 3 is connected to an output shaft 4. One end of the output shaft 4 is fixed with a motor gear 5. Rotating shafts 7 are arranged on both sides of the forward and reverse motor 3. The rotating shafts 7 are rotatably connected to the top plate 1 through a stabilizer 8, and one end of the rotating shaft 7 is fixed with a car door gear 6.

[0024] The stabilizer 8 includes a mounting block sleeved on the rotating shaft 7 and a vertical plate fixed below the mounting block. The lower end of the vertical plate is fixed to the top plate 1. A bearing is embedded in the mounting block. The rotating shaft 7 is inserted into the inner ring of the bearing. The vertical plate and the mounting block provide support for the rotating shaft 7. The bearing enables the rotating shaft 7 to rotate on the stabilizer 8.

[0025] The moving device 2 includes an electric slide rail 17 and an electric slider 18 slidably connected within the electric slide rail 17. The forward and reverse motor 3 is fixed to the upper end of the electric slider 18. The electric slide rail 17 is embedded in the upper surface of the top plate 1. The installation direction of the rotating shaft 7 is perpendicular to the installation direction of the electric slide rail 17, so that the electric slider 18 can drive the forward and reverse motor 3 to move to the corresponding position according to different side door opening requirements, and mesh with the car door gear 6 that controls the opening side. The forward and reverse motor 3 drives the motor gear 5 to rotate, and the meshing car door gear 6 drives the rotating shaft 7 to rotate, so that the rotating shaft 7 drives the transmission mechanism connected to it to work, so as to drive the elevator door 15 to open and close through the transmission mechanism. This realizes that a single motor drives the opening and closing of both sides of the car door, simplifies the control system structure, saves costs and reduces the weight of the elevator itself, thereby increasing the maximum number of passengers in the elevator, making it more practical and convenient for maintenance.

[0026] Both sides of the top plate 1 are provided with elevator doors 15 that can open and close to the left and right. The elevator doors 15 are connected to the other end of the rotating shaft 7 through a transmission mechanism for driving the elevator doors 15 to open and close. Both ends of the moving device 2 are provided with braking mechanisms 14 for clamping or releasing the rotating shaft 7. Through the linkage between the moving device 2 and the braking mechanism 14, the rotating shaft 7 can be clamped when the elevator door 15 is closed to limit the rotation of the rotating shaft 7, so that the transmission mechanism can be stopped stably and the stability of the elevator door 15 when it is closed can be guaranteed. When the elevator door 15 is opened, the clamping restriction on the rotating shaft 7 can be released to ensure that the transmission mechanism can operate normally and that the elevator door 15 can open smoothly.

[0027] The braking mechanism 14 includes elastic connectors located at both ends of the electric slide rail 17 and brake calipers for clamping the rotating shaft 7. Linkage rods 27 are fixed to both ends of the elastic connectors. The lower ends of the brake calipers are connected to the linkage rods 27 at both ends of the elastic connectors. By adjusting the compression of the elastic connectors, the distance between the linkage rods 27 at both ends is changed, thereby driving the brake calipers to open or clamp. When the elastic connectors are compressed by the electric slider 18, the distance between the linkage rods 27 located on the linkage plate 21 and the fixed plate 20 decreases. Simultaneously, the connecting rod 27 drives the brake caliper to release the rotating shaft 7, enabling the forward and reverse motor 3 to drive the rotating shaft 7 to rotate. When the electric slider 18 moves away from the fixed plate 20, the automatic rebound function of the elastic connector drives the fixed plate 20 to reset, increasing the distance between the connecting rod 27 on the linkage plate 21 and the fixed plate 20. At the same time, the connecting rod 27 drives the brake caliper to perform a clamping action on the rotating shaft 7, thereby limiting the rotation of the rotating shaft 7 and preventing it from continuing to rotate due to inertia, thus improving the stability of the elevator door 15 opening and closing.

[0028] The elastic connector includes a linkage plate 21 fixed to the end of the electric slide rail 17. A spring 22 is fixed to one end of the linkage plate 21, and a fixing plate 20 is fixed to one end of the spring 22. When the electric slider 18 moves to the fixing plate 20, the electric slider 18 pushes the fixing plate 20 to move, thereby compressing the spring 22.

[0029] The electric slide rail 17 is fitted with a limiting block 19, which allows the limiting block 19 to move on the electric slide rail 17 to adjust the compression force of the electric slider 18 on the spring 22. The position of the limiting block 19 needs to be adjusted according to the meshing requirements of the motor gear 5 and the car door gear 6 to ensure that the motor gear 5 and the car door gear 6 can mesh accurately. The limiting block 19 is located at the connection between the fixed plate 20 and the spring 22, and a touch sensor is fixed on the side of the limiting block 19 closest to the fixed plate 20. The touch sensor is used to detect the position of the electric slider 18. When the electric slider 18 contacts the touch sensor, the controller 16 is triggered to control the forward and reverse motor 3 to rotate, thereby improving the accuracy of the meshing between the motor gear 5 and the car door gear 6.

[0030] The brake caliper includes two sets of arc-shaped retainers 23 and a caliper body 24 located inside the retainers 23. The lower ends of the two sets of retainers 23 are hinged by a hinge shaft 26. The lower end of the retainer 23 is inclinedly fixed with a connecting block 25 for connecting to the connecting rod 27, so that the integral structure formed by the connecting block 25 and the retainer 23 is X-shaped with the hinge shaft 26 as the axis, so that the retainer 23 can be driven to rotate with the hinge shaft 26 as the center by changing the distance between the connecting rods 27, thereby completing the clamping or releasing action of the rotating shaft 7.

[0031] The transmission mechanism includes two sets of sprockets 11 and a chain belt 10 sleeved on the two sets of sprockets 11. The chain belt 10 has a certain rigidity, such as a drag chain, and can provide a certain support force for the elevator door 15, enabling the elevator door 15 to move stably. One set of sprockets 11 is fixed to the other end of the rotating shaft 7, and the other set of sprockets 11 is rotatably connected to the side wall of the top plate 1 through a bracket. The upper ends of the left and right doors of the elevator door 15 are respectively fixed with a left door fixing bracket 13 and a right door fixing bracket 12. The upper end of the left door fixing bracket 13 is fixed to the upper chain belt 10, and the upper end of the right door fixing bracket 12 is fixed to the lower chain belt 10. The rotation of the rotating shaft 7 drives the sprockets 11 to rotate, causing the sprockets to drive the chain belt 10 to move in a circular motion. Figure 1 As shown, the left door fixing bracket and the right door fixing bracket move in a reciprocating horizontal direction between the two sprockets 11, so as to drive the elevator door 15 to open and close via the chain belt 10.

[0032] A controller 16 is fixed on the upper surface of the top plate 1. The controller 16 is electrically connected to the forward and reverse motor 3, the moving device 2 and the touch sensor. The controller 16 has a door machine control board and multiple relays installed inside. The multiple relays are all electrically connected to the door machine control board. The forward and reverse motor 3 and the moving device 2 are connected to the door machine control board through the relays. The switching strategy is controlled by a program (this program uses the elevator control's own program and has not been modified). This is to enable intelligent judgment and drive the corresponding door to open based on the elevator's floor, up and down logic, and car position.

[0033] When in use, when the elevator has an internal or external call, the elevator moves to the destination floor. At the same time, the controller 16 obtains the destination floor and the floor door type from the host computer and determines whether the front door or the back door needs to be opened.

[0034] After the elevator reaches the destination floor, the controller 16 sends a command to drive the relay connected to the electric slider 18 to act. After receiving the action signal, the electric slider 18 drives the forward and reverse motor 3 to move towards the door opening side.

[0035] When the forward and reverse motor 3 moves to the limit block 19, the motor gear 5 meshes with the car door gear 6. At the same time, the fixed plate 20 moves, causing the spring 22 to be compressed. The brake caliper on the rotating shaft 7 located on the door opening side opens, and its touch sensor feeds back the detected spring 22 action signal to the controller 16. After the host computer determines that the door opening is allowed, the controller 16 outputs a signal to control the forward and reverse motor 3 to work. The forward and reverse motor 3 drives the transmission mechanism to move, which drives the corresponding elevator door 15 to open to both sides, thus performing the elevator door opening action.

[0036] After receiving the door opening signal from the door opening position switch, the controller 16 cuts off the drive signal of the forward and reverse motor 3 and sends a signal away from the fixed plate 20 to the electric slider 18, so that the brake clamp closes and locks the position of the rotating shaft 7, and the elevator remains in the open state.

[0037] When the elevator determines that the passengers have finished entering and exiting the car, the host computer determines that it is allowed to close the door and sends a door closing command to the controller 16, which controls the electric slider 18 to move, so that the motor gear 5 meshes with the car door gear 6. At the same time, the brake caliper releases the clamp on the rotating shaft 7, drives the forward and reverse motor 3 to reverse and drive the rotating shaft 7 to rotate in the opposite direction. The rotating shaft 7 drives the transmission mechanism to move, which drives the corresponding elevator door 15 to close in the middle, thus executing the elevator door closing action.

[0038] After receiving the door-closed signal from the door-closed switch, the controller 16 cuts off the drive signal of the forward and reverse motor 3 and simultaneously controls the electric slider 18 to move away from the fixed plate 20, so that the brake caliper clamps the rotating shaft 7 and the elevator remains in the closed state.

[0039] After the elevator door closing action is completed, if the host computer determines that the next destination floor is on the other side, the controller 16 will issue a command to drive the relay connected to the electric slider 18 to act. After receiving the action signal, the electric slider 18 will drive the forward and reverse motor 3 to move to the other side in advance to prepare for the next door opening.

[0040] It should be noted that the door opening signal and the door closing signal can be obtained by photoelectric sensors located on the opposite sides of the left and right doors of elevator door 15.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-motor controlled dual-sided elevator door opening and closing device, characterized in that: Includes a top plate (1) installed on the upper end of the car and a forward and reverse motor (3) located on the top plate (1). The forward and reverse motor (3) is connected to the upper surface of the top plate (1) through a moving device (2). The output end of the forward and reverse motor (3) is connected to an output shaft (4). One end of the output shaft (4) is fixed with a motor gear (5). Rotating shafts (7) are provided on both sides of the forward and reverse motor (3). The rotating shafts (7) are rotatably connected to the top plate (1) through a stabilizer (8). One end of the rotating shaft (7) is fixed with a car door gear (6). Both sides of the top plate (1) are provided with elevator doors (15) that can open and close to the left and right. The elevator doors (15) are connected to the other end of the rotating shaft (7) through a transmission mechanism for driving the elevator doors (15) to open and close. Both ends of the moving device (2) are provided with braking mechanisms (14) for clamping or releasing the rotating shaft (7).

2. The single-motor controlled dual-sided elevator door opening and closing device according to claim 1, characterized in that: The moving device (2) includes an electric slide rail (17) and an electric slider (18) slidably connected in the electric slide rail (17). The forward and reverse motor (3) is fixed at the upper end of the electric slider (18). The electric slide rail (17) is embedded in the upper surface of the top plate (1). The installation direction of the rotating shaft (7) is perpendicular to the installation direction of the electric slide rail (17).

3. A single-motor controlled dual-sided elevator door opening and closing device according to claim 2, characterized in that: The braking mechanism (14) includes elastic connectors located at both ends of the electric slide rail (17) and brake calipers for clamping the rotating shaft (7). The elastic connectors are fixed with connecting rods (27) at both ends. The lower end of the brake caliper is connected to the connecting rods (27) at both ends of the elastic connector. The distance between the connecting rods (27) at both ends is changed by adjusting the compression of the elastic connector, so as to drive the brake caliper to open or clamp.

4. A single-motor controlled dual-sided elevator door opening and closing device according to claim 3, characterized in that: The elastic connector includes a linkage plate (21) fixed to the end of the electric slide rail (17). A spring (22) is fixed to one end of the linkage plate (21), and a fixing plate (20) is fixed to one end of the spring (22). When the electric slider (18) moves to the fixing plate (20), the electric slider (18) pushes the fixing plate (20) to move, thereby compressing the spring (22).

5. A single-motor controlled dual-sided elevator door opening and closing device according to claim 4, characterized in that: A limiting block (19) is snapped onto the electric slide rail (17). The limiting block (19) is located at the connection between the fixed plate (20) and the spring (22), and a touch sensor is fixed on the side of the limiting block (19) near the fixed plate (20).

6. A single-motor controlled dual-sided elevator door opening and closing device according to claim 5, characterized in that: The brake caliper includes two sets of arc-shaped retainers (23) and a caliper body (24) located inside the retainers (23). The lower ends of the two sets of retainers (23) are hinged by a hinge shaft (26). The lower end of the retainer (23) is inclinedly fixed with a connecting block (25) for connecting with the connecting rod (27).

7. A single-motor controlled dual-sided elevator door opening and closing device according to claim 6, characterized in that: The transmission mechanism includes two sets of sprockets (11) and a chain belt (10) sleeved on the two sets of sprockets (11). One set of sprockets (11) is fixed to the other end of the rotating shaft (7), and the other set of sprockets (11) is rotatably connected to the side wall of the top plate (1) through a bracket. The upper ends of the left and right doors of the elevator door (15) are respectively fixed with a left door fixing bracket (13) and a right door fixing bracket (12). The upper end of the left door fixing bracket (13) is fixed on the upper chain belt (10), and the upper end of the right door fixing bracket (12) is fixed on the lower chain belt (10).

8. A single-motor controlled dual-sided elevator door opening and closing device according to claim 6, characterized in that: It also includes a controller (16) fixed on the upper surface of the top plate (1), the controller (16) being electrically connected to the forward and reverse motor (3), the moving device (2) and the touch sensor respectively.

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