Elevator light curtain protection structure

Abstract

The utility model discloses an elevator light curtain protection structure relates to elevator safety protection equipment technical field, the utility model discloses a mounting shell, the one side fixedly connected with infrared emission board in mounting shell inner chamber, the one side swing joint of mounting shell inner chamber has the buffer holder, the one side fixedly connected with the connecting frame of buffer holder. The utility model discloses a composite buffer system that is constituted by transparent plate, buffer spring, air pressure groove and piston rod etc. component is designed, and an effective physical barrier is established for light curtain core element, when the collision occurs, the impact force is first applied to high -strength transparent plate, and then is gradually absorbed through the buffer of spring and the dissipation of air pressure damping, avoids the direct transmission of external force to fragile infrared emission and receiving module, and this design fundamentally solves the problem that traditional light curtain is easily broken because of low shell strength, direct bare installation, greatly reduces the hardware damage risk caused by daily handling articles.

Description

Technical Field

[0001] This utility model belongs to the technical field of elevator safety protection equipment, and in particular relates to an elevator light curtain protection structure. Background Technology

[0002] As a core component of elevator door safety protection, the elevator light curtain is a non-contact protection device that uses infrared beam scanning detection. It mainly consists of a transmitter, a receiver, a controller, and signal cables. The transmitter has several built-in infrared LEDs that emit infrared beams sequentially at a preset frequency to form a dense beam protection network. The receiver is equipped with corresponding infrared receiver tubes to receive the beams emitted by the transmitter in real time. When an object (such as a human body or other object) blocks any beam, the receiver transmits the blocking signal to the controller. The controller then quickly instructs the elevator door to stop closing and open in the reverse direction, thereby preventing pinching accidents. However, existing elevator light curtains still have obvious structural defects in practical applications, resulting in shortened service life and reduced reliability. Specific problems are as follows: First, they lack effective anti-collision protection structures. The transmitter and receiver of existing elevator light curtains are usually directly exposed and installed on the columns or door body on both sides of the elevator door. Their outer shells are mostly made of thin-walled plastic, with low structural strength. During elevator use, when moving large or heavy items such as furniture, appliances, wheelchairs, and trolleys, they are very likely to collide directly with the light curtain sensors, causing the light curtain shell to crack, the buckles to fall off, and even causing internal components such as infrared LEDs, receivers, and circuit boards to shift or be damaged, directly causing the light curtain to fail. This not only affects the normal operation of the elevator but also poses a serious safety hazard. Second, their dustproof and oil-proof performance is insufficient. When elevators are used in environments with a lot of dust and oil, such as construction sites, factory workshops, and restaurants, dust particles and oil in the air will gradually adhere to and cover the optical windows of the light curtain transmitter and receiver. This is like covering the "eyes" (receiver) and the "flashlight" (transmitter) with a veil, which will significantly reduce the emission intensity and reception sensitivity of the infrared beam. This can lead to problems such as shortened detection distance and delayed response, or even misjudgment of the light curtain, misinterpreting an unobstructed state as an obstructed one, or failing to detect obstruction in time, resulting in frequent malfunctions of the elevator door or accidents that cause injury. To address these issues, we provide an elevator light curtain protection structure. Utility Model Content

[0003] The purpose of this utility model is to provide an elevator light curtain protection structure. By combining the protective components and the cleaning rack, it solves the problem that the existing elevator light curtains lack a corresponding protective structure, which makes them susceptible to damage and performance degradation due to external impacts and dust and impurities.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0005] This utility model relates to an elevator light curtain protection structure, comprising a mounting shell, an infrared emitting plate fixedly connected to one side of the inner cavity of the mounting shell, a buffer frame movably connected to one side of the inner cavity of the mounting shell, a connecting frame fixedly connected to one side of the buffer frame, a protective component provided on the side of the connecting frame away from the buffer frame, and mounting components provided at the top and bottom of one side of the mounting shell. The protective component includes a buffer spring, one end of which is fixedly connected to the mounting shell, and a buffer cylinder fixedly connected to the end of the buffer spring away from the mounting shell. A positioning cylinder is movably connected to the surface of the buffer cylinder, and a transparent plate is fixedly connected to the end of the buffer cylinder away from the positioning cylinder. The mounting component includes a mounting base, one side of which contacts the surface of the mounting shell, and a slot is formed on one side of the mounting base. A bracket is movably connected to the inner cavity of the slot.

[0006] The present invention is further configured such that limiting grooves are provided at the top and bottom of the inner cavity of the mounting shell, and the top and bottom of the buffer frame are movably connected to the inner cavity of the limiting groove. The size of the inner cavity of the limiting groove is adapted to the size of the buffer frame. The top and bottom of the buffer frame will not shake when moving in the inner cavity of the limiting groove. The limiting effect of the limiting groove can improve the movement stability of the buffer plate.

[0007] The present invention is further configured such that a pneumatic groove is provided on one side of the inner cavity of the limiting groove, and a piston rod is movably connected to the inner cavity of the pneumatic groove. One end of the piston rod is fixedly connected to the surface of the buffer frame. An air hole is provided on one side of the inner cavity of the pneumatic groove. As the buffer frame moves in the inner cavity of the pneumatic groove, the piston rod will compress the air in the pneumatic groove, causing it to be discharged from the air hole and drawn in. Since the inner diameter of the air hole is extremely small, it will slow down the air inlet and outlet rate, thereby generating a damping effect on the movement of the buffer frame.

[0008] The present invention is further configured such that a cleaning frame is provided on the top of one side of the transparent plate, and a cleaning cotton is fixedly connected to one side of the inner cavity of the cleaning frame. The cleaning cotton on the inner wall of the cleaning frame is in contact with the surface of the transparent plate. When the cleaning frame is pulled, the cleaning cotton moves on the transparent plate to clean away the dust and impurities on the surface of the transparent plate, so as to avoid the dust and impurities affecting the infrared light emission of the infrared light-emitting diode on the infrared emitting plate.

[0009] The present invention is further configured such that a sliding groove is provided on both the front and back of the transparent plate, and a slider is movably connected to the inner cavity of the sliding groove. One side of the slider is fixedly connected to the inner wall of the cleaning rack. The size of the slider is adapted to the size of the inner cavity of the sliding groove. The slider moves with the cleaning rack in the inner cavity of the sliding groove. The limiting structure composed of the slider and the sliding groove can improve the movement stability of the cleaning rack on the transparent plate.

[0010] The present invention is further configured such that a sealing gasket is fixedly connected to the top and bottom of the inner cavity of the opening on one side of the mounting shell. One side of the sealing gasket is in contact with the surface of the connecting frame. When the connecting frame moves with the transparent plate in the inner cavity of the opening on one side of the mounting shell, its top and bottom move on the surface of the sealing gasket. The sealing effect of the sealing gasket can prevent external dust and impurities from entering the inner cavity of the mounting shell.

[0011] The present invention is further configured such that a first buffer pad is fixedly connected to one side of the mounting shell, and a second buffer pad is fixedly connected to one side of the transparent plate. The second buffer pad contacts the first buffer pad on one side of the mounting shell as the transparent plate moves. The limiting structure composed of the first buffer pad and the second buffer pad can prevent the transparent plate from directly and rigidly contacting the mounting shell, and prevent the transparent plate from being damaged by external force impacting the mounting shell.

[0012] The present invention is further configured such that a fastening bolt is threadedly connected to the top of the mounting base, one end of the fastening bolt is in close contact with the top of the card holder, and after the card holder is inserted into the card slot cavity on one side of the mounting base along with the mounting shell, the fastening bolt is tightened so that one end of the fastening bolt is pressed against the top of the card holder, thereby fixing the card holder in the card slot cavity, and thus fixing the mounting shell on one side of the mounting base.

[0013] The present invention is further configured such that mounting plates are fixedly connected to both the front and back of the mounting base, and mounting holes are provided on the surface of the mounting plates. After the mounting screws pass through the mounting holes on the surface of the mounting plates, they are screwed into the screw holes on the elevator door, thereby installing the mounting base on the elevator door.

[0014] The present invention is further configured such that a connecting wire is provided on the top of the infrared emitting plate, and a plug is provided at the end of the connecting wire away from the infrared emitting plate. The plug at one end of the connecting wire is inserted into a socket on the side of the control box, thereby connecting the light curtain to the control box.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model establishes an effective physical barrier for the core components of the light curtain by designing a composite buffer system consisting of a transparent plate, buffer springs, air pressure grooves, and piston rods. When a collision occurs, the impact force first acts on the high-strength transparent plate, and is then absorbed step by step through the buffering of the springs and the dissipation of air pressure damping. This avoids the external force being directly transmitted to the fragile infrared emitting and receiving modules. This design fundamentally solves the problem that traditional light curtains are easily damaged by impacts due to low shell strength and direct exposed installation, and greatly reduces the risk of hardware damage caused by daily handling of items.

[0017] 2. This utility model features a sliding cleaning rack and cleaning cotton on the outside of the transparent plate, allowing maintenance personnel to quickly remove dust and oil stains adhering to the optical window without disassembling the equipment. This design ensures that the transmission and reception paths of the infrared beam remain unobstructed, preventing signal attenuation, shortened detection distance, or misjudgment caused by the accumulation of contaminants. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional diagram of an elevator light curtain protection structure.

[0020] Figure 2 An elevator light curtain protection structure Figure 1 A magnified view of a portion of point A in the middle.

[0021] Figure 3 This is a schematic diagram of the back structure of an elevator light curtain protection structure.

[0022] Figure 4 A cross-sectional view of an elevator light curtain protection structure. Figure 1 .

[0023] Figure 5 An elevator light curtain protection structure Figure 4 A magnified view of a portion of point B in the middle.

[0024] Figure 6 A cross-sectional view of an elevator light curtain protection structure. Figure 2 .

[0025] Figure 7 An elevator light curtain protection structure Figure 6 A magnified view of a portion of point C.

[0026] Figure 8 This is a schematic diagram of the installation components in an elevator light curtain protection structure.

[0027] Figure 9 This is a schematic diagram of the buffer frame and connecting frame in an elevator light curtain protection structure.

[0028] In the attached diagram: 1. Mounting shell; 2. Infrared emitting plate; 3. Buffer frame; 4. Connecting frame; 5. Protective component; 6. Mounting component; 501. Buffer spring; 502. Buffer cylinder; 503. Positioning cylinder; 504. Transparent plate; 601. Mounting base; 602. Slot; 603. Slot bracket; 7. Limiting slot; 8. Air pressure slot; 9. Piston rod; 10. Cleaning rack; 11. Cleaning cotton; 12. Fastening bolt; 13. Connecting wire. Detailed Implementation

[0029] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Please see Figure 1-9 This utility model is an elevator light curtain protection structure, including a mounting shell 1. An infrared emitting plate 2 is fixedly connected to one side of the inner cavity of the mounting shell 1. A buffer frame 3 is movably connected to one side of the inner cavity of the mounting shell 1. A connecting frame 4 is fixedly connected to one side of the buffer frame 3. A protective component 5 is provided on the side of the connecting frame 4 away from the buffer frame 3. Mounting components 6 are provided at the top and bottom of one side of the mounting shell 1. The protective component 5 includes a buffer spring 501. One end of the buffer spring 501 is fixedly connected to the mounting shell 1. A buffer cylinder 502 is fixedly connected to the end of the buffer spring 501 away from the mounting shell 1. A positioning cylinder 503 is movably connected to the surface of the buffer cylinder 502. A transparent plate 504 is fixedly connected to the end of the buffer cylinder 502 away from the positioning cylinder 503. The mounting component 6 includes a mounting base 601. One side of the mounting base 601 contacts the surface of the mounting shell 1. A slot 602 is opened on one side of the mounting base 601. A card holder 603 is movably connected to the inner cavity of the slot 602.

[0031] In some specific embodiments, the mounting shell 1 is preferably made of high-strength aluminum alloy or stainless steel, with a thickness of 3-5mm, ensuring structural strength while controlling overall weight. Its shape can be designed as a cuboid, with a length adapted to the elevator door column dimensions. An infrared emitting plate 2 is bolted to one side of the inner cavity of the mounting shell 1. The infrared emitting plate 2 uses an FR-4 epoxy resin substrate, on which multiple infrared light-emitting diodes are evenly distributed. The emission wavelength is 940nm, the emission power is 5-10mW, and the spacing between adjacent diodes can be maintained at 15-25mm to ensure the formation of a dense and uniform beam protection network.

[0032] In some specific embodiments, the buffer frame 3 can be made of ABS engineering plastic or polycarbonate, which has good toughness and impact resistance, and its size is adapted to the inner cavity of the mounting shell 1. A connecting frame 4 is fixedly connected to one side of the buffer frame 3 by welding or bolting. The connecting frame 4 is preferably made of stainless steel with a thickness of 2-3mm, and its structure is designed to be hollow, which reduces air resistance while ensuring connection strength. A protective component 5 is provided on the side of the connecting frame 4 away from the buffer frame 3, and mounting components 6 are provided on the top and bottom of one side of the mounting shell 1.

[0033] In some specific embodiments, the buffer spring 501 can be a stainless steel compression spring with an elastic coefficient of 5-10 N / mm, and the quantity is set to 4-8 sets, evenly distributed between the mounting shell 1 and the buffer cylinder 502. One end of the buffer spring 501 is fixedly connected to the mounting shell 1 by welding or snap-fit, and the end of the buffer spring 501 away from the mounting shell 1 is fixedly connected to the buffer cylinder 502, which is made of aluminum alloy. A positioning cylinder 503 is movably connected to the surface of the buffer cylinder 502. The inner diameter of the positioning cylinder 503 is adapted to the outer diameter of the buffer cylinder 502, and the gap is controlled at 0.1-0.3 mm to ensure that the buffer cylinder 502 slides smoothly without obvious shaking. The material of the positioning cylinder 503 is the same as that of the buffer cylinder 502. A transparent plate 504 is fixedly connected to one end of the buffer cylinder 502 away from the positioning cylinder 503. The transparent plate 504 is made of high-strength tempered glass or polycarbonate transparent plate with a thickness of 3-6mm and a light transmittance of ≥90%. It can effectively transmit infrared beams and resist external impacts. Its size matches the opening size of the mounting shell 1.

[0034] In some specific embodiments, the mounting base 601 can be made of cast iron or stamped steel plate, with one side in close contact with the surface of the mounting shell 1. A slot 602 is provided on one side of the mounting base 601, and a bracket 603 is movably connected inside the slot 602. The bracket 603 is made of stainless steel with a thickness of 5-8mm, and its size is adapted to the slot 602 to ensure a stable connection.

[0035] In some specific embodiments, the air pressure groove 8 can adopt a cylindrical structure, and the material is the same as that of the mounting shell 1. A piston rod 9 is movably connected to the inner cavity of the air pressure groove 8. The piston rod 9 is made of stainless steel, and the gap between it and the inner wall of the air pressure groove 8 is 0.05-0.1mm to ensure sealing performance. One end of the piston rod 9 is fixedly connected to the surface of the buffer frame 3 by threads or welding. An air hole with a diameter of 0.5-1.0mm is opened on one side of the inner cavity of the air pressure groove 8. When the piston rod 9 moves with the buffer frame 3 in the inner cavity of the air pressure groove 8, it will compress the air in the air pressure groove 8 to expel it from the air hole and draw it in. Since the inner diameter of the air hole is extremely small, it will slow down the air inlet and outlet rate, thereby generating a damping effect on the movement of the buffer frame 3. The damping coefficient can be adjusted according to the diameter of the air hole, and is usually set to 0.5-1.5N・s / mm.

[0036] In some specific embodiments, a cleaning rack 10 is provided on the top of one side of the transparent plate 504. The cleaning rack 10 can be made of aluminum alloy or ABS plastic. A cleaning cotton 11 is glued and fixed to one side of the inner cavity of the cleaning rack 10. The cleaning cotton 11 is made of microfiber material with a thickness of 5-10mm and a density of 300-500g / m³. 2It has good dust absorption and cleaning capabilities without damaging the surface of the transparent plate 504. The cleaning cotton 11 on the inner wall of the cleaning rack 10 is in close contact with the surface of the transparent plate 504, with a contact pressure of 0.1-0.3N. When the cleaning rack 10 is pulled, the cleaning cotton 11 moves on the transparent plate 504 to clean away dust and impurities on the surface of the transparent plate 504, preventing dust and impurities from affecting the infrared light emission of the infrared LEDs on the infrared emitting plate 2. The front and back of the transparent plate 504 are provided with sliding grooves, which are T-shaped grooves or rectangular grooves with the same length as the transparent plate 504. The inner cavity of the sliding groove is movably connected to a slider, which is made of polytetrafluoroethylene or nylon, has good wear resistance and lubricity, and its size is adapted to the size of the inner cavity of the sliding groove with a gap of 0.1-0.2mm. One side of the slider is fixedly connected to the inner wall of the cleaning rack 10 by bolts. The slider moves with the cleaning rack 10 in the inner cavity of the slide groove. The limiting structure composed of the slider and the slide groove can improve the movement stability of the cleaning rack 10 on the transparent plate 504. The friction force during the movement is ≤0.5N.

[0037] Specifically: After the elevator light curtain is installed on the elevator door, when large or heavy items such as furniture, appliances, wheelchairs, and trolleys are moved and come into contact with the light curtain during elevator use, the external force will first collide with the transparent plate 504. The transparent plate 504 will move to one side of the mounting shell 1 under the force. The transparent plate 504 will drive the connecting frame 4 and the buffer frame 3 to move. At the same time, the transparent plate 504 will drive the buffer cylinder 502 to move in the inner cavity of the positioning cylinder 503. When the buffer cylinder 502 moves, it will squeeze the buffer spring 501. The buffer spring 501 will generate a rebound force to buffer the external force when squeezed. The buffer structure composed of multiple sets of buffer cylinders 502, positioning cylinders 503 and buffer springs 501 can effectively buffer the collision of external forces.

[0038] Limiting grooves 7 are provided at the top and bottom of the inner cavity of the mounting shell 1. The top and bottom of the buffer frame 3 are movably connected to the inner cavity of the limiting grooves 7. A pressure groove 8 is provided on one side of the inner cavity of the limiting groove 7. A piston rod 9 is movably connected to the inner cavity of the pressure groove 8. One end of the piston rod 9 is fixedly connected to the surface of the buffer frame 3. An air hole is provided on one side of the inner cavity of the pressure groove 8. A cleaning rack 10 is provided on the top of one side of the transparent plate 504. A cleaning cotton 11 is fixedly connected to one side of the inner cavity of the cleaning rack 10. Sliding grooves are provided on both the front and back of the transparent plate 504. A slider is movably connected to the inner cavity of the sliding groove. One side of the slider is fixed to the inner wall of the cleaning rack 10. The top and bottom of the inner cavity of the opening on one side of the mounting shell 1 are fixedly connected with sealing gaskets. One side of the sealing gasket is in contact with the surface of the connecting frame 4. A first buffer pad is fixedly connected to one side of the mounting shell 1, and a second buffer pad is fixedly connected to one side of the transparent plate 504. A fastening bolt 12 is threadedly connected to the top of the mounting base 601. One end of the fastening bolt 12 is in tight contact with the top of the card holder 603. Mounting plates are fixedly connected to the front and back of the mounting base 601. Mounting holes are opened on the surface of the mounting plates. A connecting line 13 is provided on the top of the infrared emitting plate 2. A plug is provided at the end of the connecting line 13 away from the infrared emitting plate 2.

[0039] Specifically: the dimensions of the inner cavity of the limiting groove 7 are adapted to the dimensions of the buffer frame 3. The top and bottom of the buffer frame 3 will not wobble when moving within the inner cavity of the limiting groove 7. The limiting effect of the limiting groove 7 can improve the moving stability of the buffer plate. The piston rod 9 moves with the buffer frame 3 within the inner cavity of the air pressure groove 8. When the piston rod 9 moves in the air pressure groove 8, it will compress the air in the air pressure groove 8, causing it to be discharged from the air hole and drawn in. Due to the extremely small inner diameter of the air hole, it will slow down the air inlet and outlet rate, thereby creating a damping effect on the movement of the buffer frame 3. Cleaning frame 1 The cleaning cotton 11 on the inner wall of the transparent plate 504 comes into contact with the surface of the transparent plate 504. When the cleaning rack 10 is pulled, the cleaning cotton 11 moves on the transparent plate 504 to clean the dust and impurities on the surface of the transparent plate 504, preventing the dust and impurities from affecting the infrared light emission of the infrared LEDs on the infrared emitting plate 2. The size of the slider is adapted to the size of the inner cavity of the slide groove. The slider moves with the cleaning rack 10 in the inner cavity of the slide groove. The limiting structure composed of the slider and the slide groove can improve the stability of the cleaning rack 10 on the transparent plate 504. When the connecting rack 4 moves with the transparent plate 504 in the opening cavity on one side of the mounting shell 1, its top and bottom move on the surface of the sealing gasket. The sealing gasket can prevent external dust and impurities from entering the inner cavity of the mounting shell 1. The second buffer pad moves with the transparent plate 504 and comes into contact with the first buffer pad on one side of the mounting shell 1. The limiting structure composed of the first buffer pad and the second buffer pad can prevent the transparent plate 504 from making direct hard contact with the mounting shell 1, and prevent the transparent plate 504 from being damaged by external force impacting the mounting shell 1. The card holder 603... After the mounting housing 1 is inserted into the inner cavity of the slot 602 on one side of the mounting base 601, the fastening bolt 12 is tightened so that one end of the fastening bolt 12 presses against the top of the bracket 603, thereby fixing the bracket 603 in the inner cavity of the slot 602, and then fixing the mounting housing 1 to one side of the mounting base 601. After the mounting screw passes through the mounting hole on the surface of the mounting plate, it is screwed into the screw hole on the elevator door, thereby installing the mounting base 601 on the elevator door. The plug at one end of the connecting wire 13 is inserted into the socket on the side of the control box, thereby connecting the light curtain to the control box.

[0040] The working principle of this utility model is as follows: First, the installation work is carried out. The mounting base 601 is fixed to the columns or door body on both sides of the elevator door through the mounting holes and mounting screws on the mounting plate. During installation, it is ensured that the mounting base 601 is horizontal and firm, and the flatness error of the mounting surface is ≤0.5mm. Then, the mounting shell 1 is moved so that the bracket 603 on one side of the mounting shell 1 is inserted into the inner cavity of the slot 602 on one side of the mounting base 601. The fastening bolt 12 is tightened to the preset pre-tightening torque to fix the bracket 603 in the slot 602, completing the mechanical installation of the light curtain protection structure. Finally, the plug of the top connecting wire 13 of the infrared emitting board 2 is inserted into the corresponding socket of the control box to achieve electrical connection and ensure that the infrared emitting board 2 and the controller have smooth signal transmission. After the elevator light curtain is installed, it is put into use. During the daily operation of the elevator, when large or heavy objects such as furniture, home appliances, wheelchairs, and trolleys collide with the light curtain, the external force will first act on the transparent plate 504. After being subjected to force, the transparent plate 504 moves to one side of the mounting shell 1, causing the connecting frame 4 and the buffer frame 3 to move synchronously. The top and bottom of the buffer frame 3 slide smoothly within the limiting groove 7 of the mounting shell 1 to prevent displacement. At the same time, the transparent plate 504 drives the buffer cylinder 502 to move axially within the inner cavity of the positioning cylinder 503. During the movement of the buffer cylinder 502, it compresses the buffer spring 501, causing the buffer spring 501 to undergo elastic deformation and generate a rebound force, thus initially buffering and absorbing the external force. While the buffer frame 3 moves, the piston rod 9 connected to it moves synchronously within the inner cavity of the air pressure groove 8. When the piston rod 9 moves, it compresses the air in the air pressure groove 8, and the air is slowly discharged through a small hole on one side of the air pressure groove 8. Due to the small diameter of the air hole, the airflow is restricted, forming a damping force. This, combined with the elastic force of the buffer spring 501, achieves secondary buffering, dissipating the external force step by step, effectively weakening the impact force of the collision, and preventing the external force from being directly transmitted to core components such as the infrared emitting plate 2, thus protecting the infrared light-emitting diode, receiving tube, circuit board, and other components from damage. When the transparent plate 504 moves close to the mounting shell 1, the second buffer pad on one side of the transparent plate 504 contacts the first buffer pad on the side of the mounting shell 1. The elastic compression of the buffer pad further absorbs the residual impact force, preventing the transparent plate 504 from colliding hard with the mounting shell 1. At the same time, when the connecting frame 4 moves in the opening cavity on one side of the mounting shell 1, its top and bottom are in close contact with the sealing gasket, ensuring the sealing of the inner cavity of the mounting shell 1 and preventing the intrusion of dust, oil, and other impurities. During long-term use of the elevator, dust, oil, and other impurities will gradually accumulate on the surface of the transparent plate 504, affecting the emission and reception of the infrared beam. At this time, maintenance personnel do not need to disassemble the equipment. They only need to manually pull the cleaning frame 10. Under the guidance of the slider and the slide, the cleaning frame 10 slides up and down along the surface of the transparent plate 504. The cleaning cotton 11 in the inner cavity of the cleaning frame 10 rubs tightly against the surface of the transparent plate 504, thoroughly removing the dust, oil, and other impurities on the surface, restoring the light transmission performance of the transparent plate 504, ensuring that the infrared beam emission and reception path is unobstructed, and avoiding signal attenuation, shortened detection distance, or misjudgment caused by the accumulation of contaminants.After cleaning is completed, the cleaning rack 10 can remain on the top or bottom of the transparent panel 504 without affecting the normal operation of the light curtain.

[0041] This invention effectively solves the problems of traditional elevator light curtains being easily damaged by collisions and having insufficient dust and oil resistance through the design of a composite buffer system and a cleanable protective structure. It significantly improves the service life and operational reliability of elevator light curtains, and reduces maintenance costs and safety hazards.

[0042] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. An elevator light curtain protection structure, comprising a mounting shell (1), characterized in that: An infrared emitting plate (2) is fixedly connected to one side of the inner cavity of the mounting shell (1), a buffer frame (3) is movably connected to one side of the inner cavity of the mounting shell (1), a connecting frame (4) is fixedly connected to one side of the buffer frame (3), a protective component (5) is provided on the side of the connecting frame (4) away from the buffer frame (3), and mounting components (6) are provided on the top and bottom of one side of the mounting shell (1). The protective component (5) includes a buffer spring (501), one end of which is fixedly connected to the mounting shell (1), and a buffer cylinder (502) is fixedly connected to the end of the buffer spring (501) away from the mounting shell (1). A positioning cylinder (503) is movably connected to the surface of the buffer cylinder (502), and a transparent plate (504) is fixedly connected to the end of the buffer cylinder (502) away from the positioning cylinder (503). The mounting assembly (6) includes a mounting base (601), one side of which contacts the surface of the mounting shell (1), and a slot (602) is provided on one side of the mounting base (601), and a card holder (603) is movably connected to the inner cavity of the slot (602).

2. The elevator light curtain protection structure according to claim 1, characterized in that: The top and bottom of the inner cavity of the mounting shell (1) are provided with limiting grooves (7), and the top and bottom of the buffer frame (3) are movably connected to the inner cavity of the limiting grooves (7).

3. The elevator light curtain protection structure according to claim 2, characterized in that: A pneumatic groove (8) is provided on one side of the inner cavity of the limiting groove (7). A piston rod (9) is movably connected to the inner cavity of the pneumatic groove (8). One end of the piston rod (9) is fixedly connected to the surface of the buffer frame (3). An air hole is provided on one side of the inner cavity of the pneumatic groove (8).

4. The elevator light curtain protection structure according to claim 1, characterized in that: A cleaning rack (10) is provided on the top of one side of the transparent plate (504), and a cleaning cotton (11) is fixedly connected to one side of the inner cavity of the cleaning rack (10).

5. The elevator light curtain protection structure according to claim 1, characterized in that: The transparent plate (504) has grooves on both the front and back sides. A slider is movably connected to the inner cavity of the groove, and one side of the slider is fixedly connected to the inner wall of the cleaning rack (10).

6. The elevator light curtain protection structure according to claim 1, characterized in that: The top and bottom of the inner cavity of the opening on one side of the mounting shell (1) are fixedly connected with sealing gaskets, and one side of the sealing gasket is in contact with the surface of the connecting frame (4).

7. The elevator light curtain protection structure according to claim 1, characterized in that: A first buffer pad is fixedly connected to one side of the mounting shell (1), and a second buffer pad is fixedly connected to one side of the transparent plate (504).

8. The elevator light curtain protection structure according to claim 1, characterized in that: The top of the mounting base (601) is threaded with a fastening bolt (12), one end of which is in close contact with the top of the bracket (603).

9. The elevator light curtain protection structure according to claim 1, characterized in that: The mounting base (601) has mounting plates fixedly connected to both its front and back sides, and mounting holes are provided on the surface of the mounting plates.

10. The elevator light curtain protection structure according to claim 1, characterized in that: A connecting line (13) is provided on the top of the infrared emitting plate (2), and a plug is provided at the end of the connecting line (13) away from the infrared emitting plate (2).

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