Intelligent induction type elevator door anti-pinch protection device

Abstract

This utility model provides an intelligent sensor-type elevator door anti-pinch protection device, relating to the field of elevator door anti-pinch protection technology. It includes two sets of detection mechanisms, each consisting of two symmetrically arranged transmitter boxes and receiver boxes with their openings facing each other. The transmitter boxes of the two detection mechanisms are respectively installed on the top edge of the elevator car door and the top of the elevator door frame. Before the elevator door begins to close, the beam of light emitted by the infrared laser transmitter passes through the space between the elevator doors and is received by the infrared laser receiver on the opposite side. If an object or person enters the space between the elevator doors during this process, it will block the infrared laser beam, causing the receiver to be unable to receive the light signal. This detection method is real-time and can detect the presence of an object or person before they come into contact with the elevator door.

Description

Technical Field

[0001] This utility model relates to the field of elevator door anti-pinch protection technology, and in particular to an intelligent sensor-type elevator door anti-pinch protection device. Background Technology

[0002] Elevator door anti-pinch protection devices are one of the key components for ensuring passenger safety. For example, in the existing technology of an elevator door anti-pinch structure, the publication number is CN222042317U. During use, the operator fixes the damping mechanism inside the receiving slot, connects the release tank to the damping mechanism, and then injects a medium into the release tank through the valve body, thereby filling the rubber sleeve. When the elevator door closes or clamps a foreign object, the pressure on the rubber sleeve will drive the medium to push the movable plate inward. When there is no pressure, the return spring will drive the movable plate outward, so that the rubber sleeve continues to fill. When the foreign object continues to be clamped and needs to be removed, the damping mechanism can be rotated around the axis of the circular hole. When the elevator door is opened again, it returns to the initial state.

[0003] However, if the detection is only carried out after the elevator door has already trapped an object or person, even if the trapped person is detected and measures are taken immediately (such as stopping the door from closing or reopening it), the trapped object or person will still be squeezed and injured during this period. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an intelligent sensor-type elevator door anti-pinch protection device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an intelligent induction-type elevator door anti-pinch protection device, comprising two sets of detection mechanisms. Each set of detection mechanisms includes two symmetrically arranged transmitter boxes and receiver boxes, with their openings facing each other. The transmitter boxes of the two sets of detection mechanisms are respectively installed on the top edge of the elevator car door and the top of the elevator door frame. The receiver boxes of the two sets of detection mechanisms are respectively installed on the bottom edge of the elevator car door and the bottom of the elevator door frame. Each transmitter box and receiver box contains a displacement component. The displacement component includes two parallel and rotatably mounted rotating rods. On both sides of the two rotating rods are rotatably mounted bidirectional screw assemblies. Each bidirectional screw assembly consists of several sections of clearance-fitted bidirectional screws, and each section of the bidirectional screw is threadedly connected to a slider sleeved on an adjacent rotating rod. The bidirectional screw assemblies on both sides of the two rotating rods are staggered. Each slider in the transmitter box is equipped with an infrared laser emitter, and each slider in the receiver box is equipped with an infrared laser receiver.

[0006] Preferably, a large toothed ring is fixedly installed on the surface of the rotating rod and at the end position of each section of the bidirectional lead screw in the adjacent bidirectional lead screw assembly, and a small toothed ring that meshes with the adjacent large toothed ring is fixedly installed at the end of each section of the bidirectional lead screw in the bidirectional lead screw assembly.

[0007] Preferably, one end of each of the two rotating rods extends outward through the wall of the transmitter and receiver boxes and is fixedly mounted with a spur gear. The two spur gears outside the transmitter and receiver boxes are meshed and connected, and a bevel gear block is fixedly mounted on the end face of one of the spur gears.

[0008] Preferably, a transmission assembly is fixedly installed between each of two adjacent transmitter boxes and two adjacent receiver boxes. The transmission assembly includes a fixing block, and a gear column is provided through the side of the fixing block. The fixing block is fixedly installed on the transmitter box and receiver box in one of the detection mechanisms.

[0009] Preferably, one end of the gear column is rotatably connected to a connecting plate, and the connecting plate is connected to an electric push rod between the transmitter box and the receiver box in one of the detection mechanisms.

[0010] Preferably, the transmission assembly further includes a bevel gear block, wherein two bevel gear blocks are provided and are respectively rotatably connected through the surfaces of two adjacent transmitter boxes and two adjacent receiver boxes, the bevel gear block meshing with an adjacent bevel gear block and a spur gear ring is fixedly installed at the other end of the bevel gear block.

[0011] Preferably, the gear column meshes with the tooth surface of the spur ring at an adjacent position and is used to mesh with the spur ring on the adjacent transmitter box and receiver box.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, before the elevator door begins to close, the beam emitted by the infrared laser emitter will pass through the space between the elevator doors and be received by the infrared laser receiver on the opposite side. If an object or person enters the space between the elevator doors during this process, it will block the infrared laser beam, causing the receiver to be unable to receive the light signal. This detection method is real-time and can detect the presence of an object or person before they come into contact with the elevator door.

[0014] 2. In this utility model, by setting a gear column to mesh with two straight toothed rings of equal height, when the elevator car is raised or lowered to be aligned with the elevator door frame, the gear column moves to mesh with the tooth surfaces of the straight toothed rings on the transmitter and receiver boxes of the rear detection mechanism, which can help fix the position of the elevator car and prevent the elevator car from falling. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of the intelligent sensor-type elevator door anti-pinch protection device is provided for this utility model;

[0016] Figure 2 This utility model proposes an intelligent sensor-based elevator door anti-pinch protection device. Figure 1 A schematic diagram of the structure viewed from below;

[0017] Figure 3 This utility model proposes an intelligent sensor-based elevator door anti-pinch protection device. Figure 2 A schematic diagram of the rear section structure;

[0018] Figure 4 for Figure 1 Schematic diagram of the end structure of the launch box.

[0019] Legend: 1. Transmitter box; 2. Receiver box; 3. Gear column; 4. Spur gear; 5. Bevel gear block; 6. Spur gear ring; 7. Bevel gear block; 8. Electric push rod; 9. Two-way lead screw assembly; 10. Slider; 11. Large gear ring; 12. Small gear ring; 13. Fixing block; 14. Infrared laser transmitter; 15. Infrared laser receiver; 16. Rotating rod; 17. Connecting plate. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] like Figures 1-4 As shown, the intelligent sensor-type elevator door anti-pinch protection device includes two sets of detection mechanisms. Each set includes two transmitter boxes 1 and receiver boxes 2 arranged symmetrically, with their openings facing each other. Figure 1As shown, each detection mechanism consists of a transmitter box 1 and a receiver box 2. The transmitter boxes 1 of the two detection mechanisms are installed on the top edge of the elevator car door and the top of the elevator door frame, respectively. The receiver boxes 2 of the two detection mechanisms are installed on the bottom edge of the elevator car door and the bottom of the elevator door frame, respectively. They are used to detect whether there are people or objects obstructing the elevator car door and the elevator door frame before the elevator door closes. Both the transmitter box 1 and the receiver box 2 are equipped with displacement components. The displacement components include two parallel rotating rods 16, and two bidirectional screw assemblies 9 are rotatably installed on both sides of the two rotating rods 16. The bidirectional screw assemblies 9 are composed of several sections of bidirectional screws with clearance fit, and each section of the bidirectional screw has A slider 10 is threaded onto an adjacent rotating rod 16. The slider 10, acting in conjunction with the bidirectional lead screw and the rotating rod 16, prevents rotation, ensuring that the slider 10 can only reciprocate with the rotation of each bidirectional lead screw section. Large toothed rings 11 are fixedly installed on the surface of the rotating rod 16 and at the end of each bidirectional lead screw section on the adjacent bidirectional lead screw assembly 9. Small toothed rings 12, meshing with the adjacent large toothed rings 11, are fixedly installed at the end of each bidirectional lead screw section on the bidirectional lead screw assembly 9. When the rotating rod 16 rotates, the large toothed rings 11 on its surface rotate synchronously, thereby enabling the meshing small toothed rings 12 to drive the corresponding bidirectional lead screw section to rotate. The bidirectional lead screw assemblies 9 on both sides of the two rotating rods 16 are staggered, as shown... Figure 3 As shown, the two bidirectional lead screw assemblies 9 in the same box are staggered. Each slider 10 in the transmitting box 1 is equipped with an infrared laser emitter 14, and each slider 10 in the receiving box 2 is equipped with an infrared laser receiver 15. In each detection mechanism, an infrared laser receiver 15 installed in the receiving box 2 is positioned directly below each infrared laser emitter 14 in the transmitting box 1. In actual use, the bidirectional lead screw assemblies 9 of the two detection mechanisms rotate at the same speed, thus enabling the slider 10 on each section of the bidirectional lead screw assembly 9 to move horizontally back and forth. Furthermore, because the two bidirectional lead screw assemblies 9 in the same box are staggered, the horizontal back and forth movement of several sliders 10 can be maximized. In a short period of time, the infrared laser emitter 14 and infrared laser receiver 15, which are used in combination at the top and bottom, move synchronously during actual use. When there are no obstructions, the downward infrared laser emitted by the infrared laser emitter 14 is successfully received by the infrared laser receiver 15. However, when a person or object is located at the elevator car door or elevator door frame, the generated infrared laser cannot be received by the infrared laser receiver 15 due to the obstruction of the person or object. Alternatively, when passing through a transparent object, the infrared laser is refracted due to the change in the medium and cannot be received by the infrared laser receiver 15. This indicates that an object is located at the elevator car door and the elevator car door cannot be closed.

[0023] Two rotating rods 16 extend outwards through the walls of the transmitter box 1 and receiver box 2, and are fixedly mounted with spur gears 4. The two spur gears 4 outside the transmitter box 1 and receiver box 2 are meshed together, and a coaxially arranged bevel gear block 5 is fixedly mounted on the end face of one of the spur gears 4. Figure 4 and Figure 2 As shown, the two spur gears 4 on the end face of the transmitter box 1 or receiver box 2 are meshed and connected. Therefore, the passive rotation of the bevel gear block 5 drives the corresponding coaxial spur gear 4 to rotate. The other spur gear 4 on the same box will rotate, so the two rotating rods 16 in the same box will rotate synchronously.

[0024] A transmission assembly is fixedly installed between each pair of adjacent transmitter boxes 1 and each pair of adjacent receiver boxes 2. The transmission assembly includes a fixing block 13, with a gear post 3 extending through its side. The fixing block 13 is fixedly installed on the transmitter box 1 and receiver box 2 in one of the detection mechanisms. Figure 1 and Figure 3 and Figure 4 As shown, fixed blocks 13 are distributed on both the transmitter box 1 and receiver box 2 of one of the detection mechanisms. A connecting plate 17 is rotatably connected to one end of the gear column 3. An electric push rod 8 is connected between the connecting plate 17 and the transmitter box 1 and receiver box 2 of one of the detection mechanisms. The electric push rod 8 is extended to push the connecting plate 17 to drive the gear column 3 to move horizontally.

[0025] The transmission assembly also includes bevel gear blocks 7. Two bevel gear blocks 7 are provided and are rotatably connected to the surfaces of two adjacent transmitter boxes 1 and two adjacent receiver boxes 2, respectively. Since there are two transmission assemblies, there are four bevel gear blocks 7. These four bevel gear blocks 7 are respectively mounted on two transmitter boxes 1 and two receiver boxes 2. The bevel gear blocks 7 mesh with adjacent bevel gear blocks 5, and a spur gear ring 6 is fixedly mounted on the other end of each bevel gear block 7. The gear post 3 meshes with the tooth surface of the adjacent spur gear ring 6 and is used for meshing with the spur gear ring 6 on the adjacent transmitter boxes 1 and receiver boxes 2. Figure 4 and Figure 2 As shown, when the gear column 3 moves horizontally, it is rotatably connected to the connecting plate 17, so the gear column 3 will rotate synchronously. In this scheme, a motor is installed on the transmitter box 1 and receiver box 2 of this set of detection mechanisms to drive one of the rotating rods 16 to rotate. Under the meshing connection of two spur gears 4 on the same box, the other rotating rod 16 is rotated, thereby realizing the rotation of the bevel gear block 5 coaxial with the spur gear 4. The bevel gear block 7 drives the straight tooth ring 6 on its end face to rotate through the meshing connection with the bevel gear block 7. Figure 1 and Figure 2As shown, the gear column 3 is installed on the transmitter box 1 and receiver box 2 of the front position detection mechanism. When the rear detection mechanism rises with the elevator car and aligns with the elevator door frame where the front detection mechanism is located, the gear column 3 moves to mesh with the tooth surfaces of the spur gear ring 6 on the transmitter box 1 and receiver box 2 of the rear detection mechanism. This helps to fix the position of the elevator car and prevent it from falling. When the gear column 3 at the upper position meshes with the spur gears 4 on the two upper transmitter boxes 1, and the gear column 3 at the lower position meshes with the spur gears 4 on the two lower receiver boxes 2, the rotating rod 16 inside the transmitter box 1 of the front detection mechanism rotates under the drive of the motor, and the bevel gear block 5 drives the corresponding meshing link. The spur gear ring 6 rotates, and under the meshing connection of the upper gear column 3, the spur gear ring 6 on the rear detection mechanism launch box 1 rotates, thereby causing the corresponding bevel gear block 5 to drive the corresponding rotating rod 16 connected on the rear detection mechanism launch box 1 to rotate. By using the meshing connection of the two spur gears 4, the four rotating rods 16 in the two launch boxes 1 can rotate simultaneously. Under the meshing connection of the lower gear column 3, the spur gear ring 6 on the rear detection mechanism receiver box 2 rotates, thereby causing the corresponding bevel gear block 5 to drive the corresponding rotating rod 16 connected on the rear detection mechanism receiver box 2 to rotate. By using the meshing connection of the two spur gears 4, the four rotating rods 16 in the two receiver boxes 2 can rotate simultaneously.

[0026] Working principle: The transmitter boxes 1 of the two detection mechanisms are respectively installed on the top edge of the elevator car door and the top of the elevator door frame, and the receiver boxes 2 are installed on the bottom edge of the elevator car door and the bottom of the elevator door frame. Before the elevator car door closes, the four rotating rods 16 of the two transmitter boxes 1 and the four rotating rods 16 of the two receiver boxes 2 are linked by two transmission components. The four rotating rods 16 of the two transmitter boxes 1 and the four rotating rods 16 of the two receiver boxes 2 rotate at the same speed. Under the meshing connection of the large gear ring 11 and the small gear ring 12, the rotating rods 16 drive the bidirectional lead screw assembly 9 to rotate. The bidirectional lead screw assembly 9 of the two detection mechanisms rotates at the same speed, so that the slider 10 on each section of the bidirectional lead screw assembly 9 can move horizontally back and forth. In the shortest possible time, the infrared laser emitter 14 and infrared laser receiver 15, which are used in combination at the top and bottom, move synchronously. When there are no obstructions, the downward infrared laser emitted by the infrared laser emitter 14 is successfully received by the infrared laser receiver 15. However, when a person or object is located at the elevator car door or elevator door frame, the generated infrared laser cannot be received by the infrared laser receiver 15 due to the obstruction of the person or object. Alternatively, when passing through a transparent object, the infrared laser is refracted due to the change in the medium and cannot be received by the infrared laser receiver 15. This indicates that an object is located at the elevator car door and the elevator car door cannot be closed.

[0027] The wiring diagrams for the electric actuator 8, infrared laser transmitter 14, infrared laser receiver 15, and motor in this utility model are common knowledge in the field. Their working principles are well-known technologies. The appropriate model is selected based on actual use. Therefore, the control methods and wiring layouts for the electric actuator 8, infrared laser transmitter 14, infrared laser receiver 15, and motor will not be explained in detail. Specifically, the infrared laser transmitter 14 can be an OptoDiode series infrared transmitter, and the infrared laser receiver 15 can be an LF0038Q infrared receiver head.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An intelligent sensor-type elevator door anti-pinch protection device, characterized in that: It includes two sets of detection mechanisms, each consisting of two symmetrically arranged transmitter boxes (1) and receiver boxes (2), with their openings facing each other. The transmitter boxes (1) are installed on the top edge of the elevator car door and the top edge of the elevator door frame, respectively, and the receiver boxes (2) are installed on the bottom edge of the elevator car door and the bottom edge of the elevator door frame, respectively. Each transmitter box (1) and receiver box (2) contains a displacement assembly, which includes two parallel and rotatably mounted rotating rods (16). Both sides of the rotating rod (16) are provided with a rotatably mounted bidirectional screw assembly (9). The bidirectional screw assembly (9) is composed of several sections of bidirectional screws with clearance fit, and each section of bidirectional screw is threadedly connected to a slider (10) sleeved on the adjacent rotating rod (16). The bidirectional screw assemblies (9) on both sides of the two rotating rods (16) are staggered. Each slider (10) in the transmitting box (1) is equipped with an infrared laser emitter (14), and each slider (10) in the receiving box (2) is equipped with an infrared laser receiver (15).

2. The intelligent sensor-type elevator door anti-pinch protection device according to claim 1, characterized in that: Large toothed rings (11) are fixedly installed on the surface of the rotating rod (16) and at the end of each section of the bidirectional screw assembly (9). Small toothed rings (12) that mesh with the adjacent large toothed rings (11) are fixedly installed at the end of each section of the bidirectional screw assembly (9).

3. The intelligent sensor-type elevator door anti-pinch protection device according to claim 1, characterized in that: One end of each of the two rotating rods (16) extends outward through the walls of the transmitter box (1) and receiver box (2) and is fixedly mounted with a spur gear (4). The two spur gears (4) outside the transmitter box (1) and receiver box (2) are meshed and connected, and a bevel gear block (5) is fixedly mounted on the end face of one of the spur gears (4).

4. The intelligent sensor-type elevator door anti-pinch protection device according to claim 3, characterized in that: A transmission assembly is fixedly installed between two adjacent transmitter boxes (1) and two adjacent receiver boxes (2). The transmission assembly includes a fixing block (13). A gear column (3) is provided through the side of the fixing block (13), and the fixing block (13) is fixedly installed on the transmitter box (1) and receiver box (2) in one of the detection mechanisms.

5. The intelligent sensor-type elevator door anti-pinch protection device according to claim 4, characterized in that: One end of the gear column (3) is rotatably connected to a connecting plate (17), and the connecting plate (17) is connected to an electric push rod (8) between the transmitter box (1) and receiver box (2) in one of the detection mechanisms.

6. The intelligent sensor-type elevator door anti-pinch protection device according to claim 4, characterized in that: The transmission assembly also includes a bevel gear block (7), which has two parts and is rotatably connected to the surfaces of two adjacent transmitter boxes (1) and two adjacent receiver boxes (2), respectively. The bevel gear block (7) is meshed with the adjacent bevel gear block (5), and a straight gear ring (6) is fixedly installed at the other end of the bevel gear block (7).

7. The intelligent sensor-type elevator door anti-pinch protection device according to claim 4, characterized in that: The gear column (3) meshes with the tooth surface of the adjacent spur ring (6) and is used to mesh with the spur ring (6) on the adjacent launch box (1) and receiver box (2).

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