Car gap self-adapting telescopic overlap device for elevator

Abstract

The application discloses a car gap self-adapting telescopic lapping device for an elevator, relates to the technical field of elevator safety, and aims to solve the problem that the gap between the elevator car and the floor easily causes the trapping of vehicles or goods in the prior art. The self-adapting telescopic lapping device comprises a portal frame, the portal frame is installed in an elevator car door frame, vertical sprocket sets are symmetrically arranged at the two sides of the portal frame, synchronous shafts are drivingly connected to the two vertical sprocket sets, a driving motor is connected to the synchronous shafts, horizontal sprocket sets are drivingly connected to the ends of the vertical sprocket sets away from the synchronous shafts, and lapping mechanisms are connected to the horizontal sprocket sets. The device is linked with an elevator door machine, the lapping mechanisms are automatically extended to fill the gap when the door is opened, and the lapping mechanisms are automatically retracted before the door is closed. The device has the characteristics of compact structure, accurate action and high reliability, is particularly suitable for heavy-load occasions such as a cargo elevator and an automobile elevator, can effectively eliminate safety hazards, and improves transportation efficiency.

Description

Technical Field

[0001] This application relates to the field of elevator safety technology, and in particular to an adaptive telescopic overlap device for elevator car gaps, which is suitable for heavy-duty applications such as freight elevators and car elevators. The telescopic overlap device is used to automatically fill the gap between the elevator car and the floor. Background Technology

[0002] Traditional elevators typically have a certain height and horizontal clearance between the car and the floor. This structural clearance can easily cause wheels to get stuck, equipment to become unbalanced, or even overturn when vehicles, heavy equipment, or heavy goods enter or exit the car, affecting not only transportation efficiency but also posing a potential threat to the safety of people and goods.

[0003] Currently, common countermeasures mainly include: 1. The fixed transition plate has a non-adjustable structure, making it difficult to adapt to the specific gap differences between different cars and floors, thus limiting its applicability; 2. Using manual temporary laying of mats is inconvenient and inefficient, cannot meet emergency handling needs, and does not guarantee safety.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this application is to provide an adaptive telescopic overlap device for elevator car gaps, which automatically fills the gaps between the car and the floors to prevent wheels or goods from getting stuck.

[0006] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution: The adaptive telescopic overlap device includes: a gantry frame, which is installed inside the elevator car door frame. Vertical sprocket sets are symmetrically arranged on both sides of the gantry frame. Synchronous shafts are driven and connected to the two vertical sprocket sets. A drive motor is externally connected to the synchronous shafts. A horizontal sprocket set is driven and connected to the end of the vertical sprocket set away from the synchronous shaft. An overlap mechanism is connected to the horizontal sprocket set.

[0007] The gantry frame is fixed inside the elevator car, providing the installation foundation for the telescopic overlapping device. The synchronous shaft of the external drive motor serves as the main power source for the telescopic overlapping device, transmitting power to the vertical sprocket assembly. The drive motor is linked with the elevator's control system, automatically activating when the elevator doors open and close. The vertical sprocket assemblies, symmetrically arranged on both sides of the gantry frame, are linked through the synchronous shaft, ensuring consistent movement. Only one motor is needed to drive the entire device, reducing the number of motors required and not affecting elevator operation. The vertical sprocket assembly is responsible for transmitting power to the horizontal sprocket assembly, which drives the overlapping mechanism to automatically fill the gap between the car and the floor, preventing wheels or goods from getting stuck.

[0008] Furthermore, the vertical sprocket assembly includes a first sprocket, a second sprocket, and a third sprocket. The first sprocket, the second sprocket, and the third sprocket are rotatably connected to the gantry frame, and the first sprocket is connected to the synchronous shaft drive. The second sprocket is connected to the first sprocket via a vertical chain, and the third sprocket is connected to the second sprocket via a power transmission chain.

[0009] The first, second, and third sprockets are arranged sequentially along the power transmission direction, and transmit power to the horizontal sprocket group through the separately fitted vertical chain and force transmission chain, thereby driving the overlapping mechanism to move.

[0010] Furthermore, the horizontal sprocket assembly includes a fourth sprocket and a horizontal chain. The fourth sprocket is rotatably connected to the gantry frame and is driven by the third sprocket via the horizontal chain.

[0011] The horizontal chain is mounted on the third and fourth sprockets, allowing it to move horizontally under the drive of the third sprocket, thereby driving the overlapping mechanism to complete the overlapping process.

[0012] Furthermore, the overlapping mechanism includes a fixed plate, a linear guide rail, a movable plate, and an overlapping plate. The gantry frame is provided with a guide groove and an arc groove. One end of the fixed plate is connected to the horizontal chain drive, and the other end of the fixed plate is slidably connected to the guide groove. The overlapping plate is fastened to the movable plate.

[0013] Furthermore, a linear guide rail is provided on the side of the fixed plate near the movable plate, and a slider is provided on the movable plate, with the slider slidably connected to the linear guide rail.

[0014] Furthermore, the movable plate is equipped with two parallel pulleys, which are slidably connected to the arc-shaped groove.

[0015] When the elevator door needs to extend the connecting plate to open, the fixed plate moves horizontally along the guide groove driven by the horizontal chain. This, in turn, causes the movable plate to slide outward along the arc-shaped groove. The arc-shaped groove makes the movement trajectory of the movable plate arc-shaped, thus making the movement trajectory of the connecting plate connected to the movable plate also arc-shaped. This ensures that the movement path of the connecting plate precisely matches the geometric characteristics of the gap between the elevator car and the floor, preventing the connecting plate from getting stuck in the gap during movement. The linear guide rails on the slider and fixed plate cooperate to provide vertical movement space for the arc-shaped movement of the movable plate. The pulleys equipped on the movable plate ensure smooth and stable movement.

[0016] Furthermore, the telescopic overlapping device also includes a crank handle, which passes through the gantry frame and is connected to the second sprocket drive.

[0017] The crank handle serves as an emergency backup. Manually turning the crank handle can drive the second sprocket to rotate, thereby driving the overlapping mechanism to operate. This forms a dual-mode drive with the motor drive, ensuring the overall emergency reliability of the device.

[0018] Furthermore, the second sprocket includes a first main sprocket and a second main sprocket fastened together by a pin. The first main sprocket is connected to the vertical chain drive, and the second main sprocket is connected to the force transmission chain drive. The third sprocket includes a first driven sprocket and a second driven sprocket fastened together by a pin. The first driven sprocket is connected to the power transmission chain, and the second driven sprocket is connected to the horizontal sprocket assembly. The diameter of the first driven sprocket is smaller than the diameter of the second main sprocket.

[0019] The second sprocket changes the direction of force transmission through the cooperation of two sprockets. The first main sprocket and the second main sprocket work together to transmit the power on the vertical chain to the force transmission chain. The first driven sprocket and the second driven sprocket work together to transmit the power on the force transmission chain to the horizontal chain. By setting the diameter of the first driven sprocket to be smaller than the diameter of the second main sprocket, these two sprockets and the force transmission chain form a speed-increasing structure, thereby increasing the moving speed of the horizontal chain and improving the opening and closing speed of the overlapping mechanism.

[0020] Compared with the prior art, the beneficial effects achieved by this application are as follows: 1. The synchronous shaft, vertical sprocket set, and horizontal sprocket set work together, and the drive motor connected to the synchronous shaft is linked with the motor's control system. It automatically starts when the elevator door opens or closes, transmitting power to the lap mechanism, which automatically fills the gap between the car and the floor, preventing wheels or goods from getting stuck. In addition, the vertical sprocket sets symmetrically arranged on both sides of the gantry frame are linked through the synchronous shaft, ensuring consistent movement. Only one motor is needed to drive the entire device, reducing the number of motors used and not affecting the operation of the elevator.

[0021] 2. A crank handle is installed on the second sprocket as an emergency backup. Manually turning the crank handle can drive the second sprocket to rotate, thereby driving the overlapping mechanism to move. This forms a dual-mode drive with the motor drive, ensuring the overall emergency reliability of the device. The movable plate on the overlapping mechanism cooperates with the arc-shaped groove. The arc-shaped groove makes the movement trajectory of the movable plate arc-shaped, so that the movement trajectory of the overlapping plate connected to the movable plate is also arc-shaped. This allows the movement path of the overlapping plate to accurately match the geometric characteristics of the gap between the elevator car and the floor, preventing the overlapping plate from getting stuck in the gap during movement.

[0022] 3. By setting the diameter of the first sprocket to be smaller than that of the second main sprocket, the two together with the power transmission chain form a speed-increasing structure, thereby increasing the moving speed of the horizontal chain and improving the opening and closing speed of the overlapping mechanism. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 Schematic diagrams of vertical and horizontal sprocket sets; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 for Figure 2 Enlarged view of a section at point B in the middle; Figure 5 This is a schematic diagram of the overlapping mechanism structure of this application.

[0025] In the diagram: 1. Gantry frame; 11. Guide groove; 12. Arc groove; 2. Vertical sprocket assembly; 21. First sprocket; 22. Second sprocket; 221. First main sprocket; 222. Second main sprocket; 23. Third sprocket; 231. First driven sprocket; 232. Second driven sprocket; 24. Vertical chain; 25. Power transmission chain; 3. Synchronous shaft; 4. Horizontal sprocket assembly; 41. Fourth sprocket; 42. Horizontal chain; 5. Overlapping mechanism; 51. Fixed plate; 52. Linear guide rail; 53. Movable plate; 54. Overlapping plate; 55. Slider; 6. Handle. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. Example 1

[0027] like Figure 1 As shown, this embodiment provides an adaptive telescopic overlap device for elevator car gaps, including: a gantry frame 1, which is installed inside the elevator car door frame. Vertical sprocket sets 2 are symmetrically arranged on both sides of the gantry frame 1. Synchronous shafts 3 are driven and connected to the two vertical sprocket sets 2. A drive motor is externally connected to the synchronous shafts 3. A horizontal sprocket set 4 is driven and connected to one end of the vertical sprocket set 2 away from the synchronous shaft 3. An overlap mechanism 5 is connected to the horizontal sprocket set 4.

[0028] The gantry frame 1 is fixed inside the elevator car, providing an installation base for the telescopic overlapping device. The synchronous shaft 3 of the external drive motor serves as the main power source for the telescopic overlapping device, transmitting power to the vertical sprocket assembly 2. The drive motor is linked with the elevator's control system, automatically activating when the elevator doors open and close. The vertical sprocket assemblies 2, symmetrically arranged on both sides of the gantry frame 1, are linked through the synchronous shaft 3, ensuring consistent movement. Only one motor is needed to drive the entire device, reducing the number of motors used and not affecting the operation of the elevator. The vertical sprocket assembly 2 is responsible for transmitting power to the horizontal sprocket assembly 4, which drives the overlapping mechanism 5 to automatically fill the gap between the car and the floor, preventing wheels or goods from getting stuck.

[0029] like Figure 2 As shown, the vertical sprocket assembly 2 includes a first sprocket 21, a second sprocket 22, and a third sprocket 23. The first sprocket 21, the second sprocket 22, and the third sprocket 23 are rotatably connected to the gantry frame 1, and the first sprocket 21 is drive-connected to the synchronous shaft 3. The second sprocket 22 is connected to the first sprocket 21 via a vertical chain 24, and the third sprocket 23 is connected to the second sprocket 22 via a power transmission chain 25.

[0030] The first sprocket 21, the second sprocket 22, and the third sprocket 23 are arranged sequentially along the power transmission direction, and transmit power to the horizontal sprocket group 4 through the vertical chain 24 and the force transmission chain 25 respectively, thereby driving the overlapping mechanism 5 to move.

[0031] The horizontal sprocket assembly 4 includes a fourth sprocket 41 and a horizontal chain 42. The fourth sprocket 41 is rotatably connected to the gantry frame 1, and the fourth sprocket 41 is connected to the third sprocket 23 via the horizontal chain 42.

[0032] The horizontal chain 42 is mounted on the third sprocket 23 and the fourth sprocket 41, so that the horizontal chain 42 can move horizontally under the drive of the third sprocket 23, thereby driving the overlapping mechanism 5 to move and complete the overlapping process.

[0033] like Figure 5 As shown, the overlapping mechanism 5 includes a fixed plate 51, a linear guide rail 52, a movable plate 53, and an overlapping plate 54. The gantry frame 1 is provided with a guide groove 11 and an arc groove 12. One end of the fixed plate 51 is connected to the horizontal chain 42 for transmission, and the other end of the fixed plate 51 is slidably connected to the guide groove 11. The overlapping plate 54 is fastened to the movable plate 53.

[0034] A linear guide rail 52 is provided on the side of the fixed plate 51 near the movable plate 53, and a slider 55 is provided on the movable plate 53. The slider 55 is slidably connected to the linear guide rail 52.

[0035] The movable plate 53 is equipped with two parallel pulleys, which are slidably connected to the arc-shaped groove 12.

[0036] When the elevator door needs to extend the connecting plate 54 to open, the fixed plate 51 moves horizontally along the guide groove 11 under the drive of the horizontal chain 42, which in turn drives the movable plate 53 to slide outward along the arc groove 12. The arc groove 12 makes the movement trajectory of the movable plate 53 arc-shaped, so that the movement trajectory of the connecting plate 54 connected to the movable plate 53 is also arc-shaped. This allows the movement path of the connecting plate 54 to accurately match the geometric features of the gap between the elevator car and the floor, preventing the connecting plate 54 from being stuck in the gap during movement. The slider 55 and the linear guide rail 52 on the fixed plate 51 cooperate to provide vertical movement space for the arc-shaped movement of the movable plate 53. The pulleys equipped on the movable plate 53 are to ensure the smoothness and stability of its movement.

[0037] like Figure 2-4 As shown, the second sprocket 22 includes a first main sprocket 221 and a second main sprocket 222 fastened together by a pin. The first main sprocket 221 is connected to the vertical chain 24 for transmission, and the second main sprocket 222 is connected to the force transmission chain 25 for transmission. The third sprocket 23 includes a first driven sprocket 231 and a second driven sprocket 232 fastened by a pin. The first driven sprocket 231 is connected to the power transmission chain 25, and the second driven sprocket 232 is connected to the horizontal sprocket group 4. The diameter of the first driven sprocket 231 is smaller than the diameter of the second main sprocket 222.

[0038] The second sprocket 22 changes the direction of force transmission through the cooperation of two sprockets. The first main sprocket 221 and the second main sprocket 222 cooperate to transmit the power on the vertical chain 24 to the force transmission chain 25. The first driven sprocket 231 and the second driven sprocket 232 cooperate to transmit the power on the force transmission chain 25 to the horizontal chain 42. By setting the diameter of the first driven sprocket 231 to be smaller than the diameter of the second main sprocket 222, these two and the force transmission chain 25 form a speed-increasing structure, thereby increasing the moving speed of the horizontal chain 42 and improving the opening and closing speed of the overlapping mechanism 5. Example 2

[0039] like Figure 1 As shown, in order to ensure that the telescopic overlapping device can also work in emergency situations, the telescopic overlapping device also includes a crank handle 6, which passes through the gantry frame 1 and is connected to the second sprocket 22 for transmission.

[0040] The crank handle 6 serves as an emergency backup. Manually turning the crank handle 6 can drive the second sprocket 22 to rotate, thereby driving the overlapping mechanism 5 to move. This forms a dual-mode drive with the motor drive, ensuring the overall emergency reliability of the device.

[0041] The working principle of this application is as follows: When the elevator door opens, the drive motor linked with the elevator control system operates, transmitting power to the vertical sprocket sets 2 on both sides of the gantry frame 1 via the synchronous shaft 3. The vertical sprocket sets 2 then transmit power to the horizontal sprocket sets 4. Driven by the horizontal chain 42, the fixed plate 51 moves horizontally along the guide groove 11, thereby driving the movable plate 53 to slide outward along the arc groove 12. The arc groove 12 makes the movement trajectory of the movable plate 53 arc-shaped, thus making the movement trajectory of the overlapping plate 54 connected to the movable plate 53 also arc-shaped. This allows the movement path of the overlapping plate 54 to precisely match the geometric features of the gap between the elevator car and the floor, ultimately allowing the overlapping plate 54 to automatically fill the gap between the car and the floor. Furthermore, by setting the diameter of the first sprocket 231 to be smaller than the diameter of the second main sprocket 222, these two, together with the force transmission chain 25, form a speed-increasing structure, thereby increasing the moving speed of the horizontal chain 42, accelerating the moving speed of the overlapping plate 54, and improving the overall opening speed of the device.

[0042] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific orientation. If the specific orientation changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this application and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A self-adaptive telescopic overlap device for elevator car gaps, characterized in that, include: A gantry frame (1) is installed inside the elevator car door frame. Vertical sprocket sets (2) are symmetrically arranged on both sides of the gantry frame (1). Synchronous shafts (3) are connected to the two vertical sprocket sets (2). A drive motor is connected to the synchronous shafts (3). A horizontal sprocket set (4) is connected to one end of the vertical sprocket set (2) away from the synchronous shafts (3). An overlapping mechanism (5) is connected to the horizontal sprocket set (4).

2. The adaptive telescopic overlap device for elevator car gaps according to claim 1, characterized in that: The vertical sprocket assembly (2) includes a first sprocket (21), a second sprocket (22) and a third sprocket (23). The first sprocket (21), the second sprocket (22) and the third sprocket (23) are rotatably connected to the gantry frame (1). The first sprocket (21) is connected to the synchronous shaft (3) for transmission. The second sprocket (22) is connected to the first sprocket (21) via a vertical chain (24), and the third sprocket (23) is connected to the second sprocket (22) via a power transmission chain (25).

3. The adaptive telescopic overlap device for elevator car gaps according to claim 2, characterized in that: The horizontal sprocket assembly (4) includes a fourth sprocket (41) and a horizontal chain (42). The fourth sprocket (41) is rotatably connected to the gantry frame (1), and the fourth sprocket (41) is connected to the third sprocket (23) via the horizontal chain (42).

4. The adaptive telescopic overlap device for elevator car gaps according to claim 3, characterized in that: The overlapping mechanism (5) includes a fixed plate (51), a linear guide rail (52), a movable plate (53), and an overlapping plate (54). The gantry frame (1) is provided with a guide groove (11) and an arc groove (12). One end of the fixed plate (51) is connected to the horizontal chain (42) for transmission, and the other end of the fixed plate (51) is slidably connected to the guide groove (11). The overlapping plate (54) is fastened to the movable plate (53).

5. The adaptive telescopic overlap device for elevator car gaps according to claim 4, characterized in that: A linear guide rail (52) is provided on the side of the fixed plate (51) near the movable plate (53), and a slider (55) is provided on the movable plate (53). The slider (55) is slidably connected to the linear guide rail (52).

6. The adaptive telescopic overlap device for elevator car gaps according to claim 4, characterized in that: The movable plate (53) is provided with two parallel pulleys, which are slidably connected to the arc groove (12).

7. The adaptive telescopic overlap device for elevator car gaps according to claim 2, characterized in that: The telescopic overlapping device also includes a crank handle (6), which passes through the gantry frame (1) and is connected to the second sprocket (22) for transmission.

8. The adaptive telescopic overlap device for elevator car gaps according to claim 2, characterized in that: The second sprocket (22) includes a first main sprocket (221) and a second main sprocket (222) fastened by a pin. The first main sprocket (221) is connected to the vertical chain (24) for transmission, and the second main sprocket (222) is connected to the force transmission chain (25) for transmission. The third sprocket (23) includes a first slave sprocket (231) and a second slave sprocket (232) fastened by a pin. The first slave sprocket (231) is connected to the power transmission chain (25) and the second slave sprocket (232) is connected to the horizontal sprocket group (4). The diameter of the first slave sprocket (231) is smaller than the diameter of the second master sprocket (222).

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