Anti-falling device for an overhead automatic door

Abstract

The utility model discloses a kind of anti-falling devices of lifting type automatic door, including fixed shaft, swing piece and guide rail, the fixed shaft is fixedly connected with door panel, the swing piece is rotatably connected on the fixed shaft, the guide rail includes oppositely arranged first guide plate and second guide plate, and guiding groove is formed between the first guide plate and second guide plate, the swing piece is located in the guiding groove and can reciprocate along the axial direction of the guiding groove;The inner wall of the first guide plate is in the axial direction of the first guide plate Wave shape, the swing piece is attached to the inner wall of the first guide plate;Multiple clamping grooves are set on the second guide plate along the axial direction of the second guide plate, and the swing piece is provided with clamping block that is clamped with the clamping groove. The utility model can effectively prevent door panel from falling in real time to ensure personnel safety, while saving electronic equipment and reducing use cost.

Description

Technical Field

[0001] This utility model relates to the field of lifting door technology, and in particular to an anti-fall device for a lifting automatic door. Background Technology

[0002] In modern industrial and scientific research environments, soundproof rooms, as special spaces with strict acoustic requirements, are widely used in fields such as audio testing, precision instrument calibration, and medical research. The safe operation of their automatic lifting door systems is crucial, especially the fall prevention function, which directly relates to the safety of personnel inside and the integrity of the equipment.

[0003] Existing anti-fall devices primarily rely on speed sensors to monitor the descent speed of the door panel. If an anomaly occurs during the descent, causing a sudden acceleration, a controller can activate an electric telescopic rod to lock the door, preventing a sudden fall. While this solution prevents the door panel from falling, it relies on speed sensors to detect potential falls. However, the probability of a door panel falling is relatively low, and even if the speed sensor malfunctions, it's difficult for users to detect the problem. A damaged speed sensor cannot detect a fall, posing a serious safety hazard. Furthermore, the excessive use of electronic equipment increases operating costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an anti-fall device for lifting automatic doors, which can effectively prevent the door panel from falling in real time to ensure personnel safety, while saving electronic equipment and reducing operating costs.

[0005] This utility model is achieved through the following technical solution:

[0006] A fall prevention device for a lifting automatic door includes:

[0007] A fixed shaft is fixedly connected to the door panel;

[0008] A swinging component, which is rotatably connected to the fixed shaft;

[0009] The guide rail includes a first guide plate and a second guide plate disposed opposite to each other, and a guide groove is formed between the first guide plate and the second guide plate. The swing member is located in the guide groove and can reciprocate along the axial direction of the guide groove.

[0010] The inner wall of the first guide plate is wavy along the axial direction of the first guide plate, and the swinging member is attached to the inner wall of the first guide plate;

[0011] The second guide plate has multiple slots along its axial direction, and the swing member has a locking block that engages with the slots.

[0012] Furthermore, it also includes an elastic element, wherein the swinging element is attached to the inner wall of the first guide plate under the elastic force of the elastic element.

[0013] Furthermore, the elastic element is a torsion spring, which is sleeved on the mounting shaft of the swinging element. One end of the torsion spring is fixedly connected to the fixed shaft, and the other end is fixedly connected to the swinging element.

[0014] Furthermore, a roller is provided on the side of the swing member near the first guide plate. The roller is mounted on the swing member via a rotating shaft, and the roller is in contact with the inner wall of the first guide plate.

[0015] Furthermore, an elastic material is provided between the roller and the rotating shaft.

[0016] Furthermore, the other end of the torsion spring is fixedly connected to the rotating shaft.

[0017] Furthermore, the card block is provided with an inclined surface, which is slidably connected to the edge of the opening of the card slot.

[0018] Furthermore, a limiting block is protruding on the card block, and the limiting block abuts against the back of the second guide plate.

[0019] Furthermore, a bearing is provided between the fixed shaft and the swing member.

[0020] Furthermore, a sliding block is also provided inside the guide rail, and sliding grooves that mate with the sliding block are provided on both the first guide plate and the second guide plate, and the sliding block is fixedly connected to the fixed shaft.

[0021] Compared with existing technologies, the advantages of this utility model are:

[0022] By working together with components such as the swinging parts, guide rails, and fixed shafts, a highly efficient anti-fall function is achieved using a simple mechanical structure. It can effectively prevent the door panel from falling in real time to ensure personnel safety, without the need for a complex electronic control system, thus reducing costs and the risk of failure. Attached Figure Description

[0023] Figure 1 This is a structural diagram of a lifting automatic door;

[0024] Figure 2 This is a schematic diagram of the fall protection device.

[0025] Figure 3 This is a partial structural diagram of a lifting automatic door.

[0026] 1. Door panel; 100. Fixed shaft; 200. Swinging component; 210. Locking block; 211. Inclined surface; 212. Limiting block; 220. Mounting shaft; 230. Roller; 240. Rotating shaft; 300. Guide rail; 310. First guide plate; 311. Inner wall; 320. Second guide plate; 321. Slot; 322. Back side; 330. Guide groove; 340. Sliding block; 350. Sliding groove; 400. Torsion spring; 500. Bearing. Detailed Implementation

[0027] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] like Figures 1-3As shown, an anti-fall device for a lifting automatic door according to an embodiment of the present invention is characterized by comprising a fixed shaft 100, a swing member 200, and a guide rail 300. The fixed shaft 100 is fixedly connected to the door panel 1. The swing member 200 is rotatably connected to the fixed shaft 100. The guide rail 300 includes a first guide plate 310 and a second guide plate 320 arranged opposite to each other, and a guide groove 330 is formed between the first guide plate 310 and the second guide plate 320. The swing member 200 is located in the guide groove 330 and can reciprocate along the axial direction of the guide groove 330. The inner wall 311 of the first guide plate 310 is wavy along the axial direction of the first guide plate 310. The swing member 200 fits against the inner wall 311 of the first guide plate 310. The second guide plate 320 is provided with a plurality of slots 321 along the axial direction of the second guide plate 320. The swing member 200 is provided with a locking block 210 that engages with the slots 321. When the door panel 1 descends at a constant speed, the door panel 1 drives the swing member 200 to slide along the guide groove 330 through the fixed shaft 100, and the swing member 200 always adheres to the inner wall 311 of the first guide plate 310 throughout the entire descent process; when the door panel 1 descends rapidly, the swing member 200 will swing significantly due to inertia when sliding on the wavy inner wall 311, thereby causing the locking block 210 to engage in the locking groove 321 and stop the door panel 1 from falling further.

[0029] like Figure 2 As shown, a roller 230 is provided on the side of the swing member 200 near the first guide plate 310. The roller 230 is mounted on the swing member 200 via a rotating shaft 240, and the roller 230 is in contact with the inner wall 311 of the first guide plate 310. The rotation of the roller 230 further reduces the friction between the swing member 200 and the inner wall 311, ensuring smooth operation of the device.

[0030] An elastic material is provided between the roller 230 and the shaft 240. The elastic material provides cushioning between the roller 230 and the shaft 240, reducing wear and extending service life.

[0031] The fall arrestor also includes an elastic element, and the swing element 200 is attached to the inner wall 311 of the first guide plate 310 under the elastic force of the elastic element. For details, see [reference needed]. Figure 2 The elastic element is a torsion spring 400, which is sleeved on the mounting shaft 220 of the swing member 200. One end of the torsion spring 400 is fixedly connected to the fixed shaft 100, and the other end is fixedly connected to the swing member 200. Furthermore, the other end of the torsion spring 400 is fixedly connected to the rotating shaft 240.

[0032] like Figure 2 As shown, the locking block 210 is provided with an inclined surface 211, which is slidably connected to the edge of the opening of the locking slot 321. The design of the inclined surface 211 makes it easier for the locking block 210 to disengage from the locking slot 321 when the swing member 200 rises.

[0033] like Figure 2 As shown, a limiting block 212 protrudes from the locking block 210, and the limiting block 212 abuts against the back surface 322 of the second guide plate 320. This ensures that the locking block 210 of the swing member 200 is stably engaged with the locking groove 321.

[0034] like Figure 2 As shown, a bearing 500 is provided between the fixed shaft 100 and the swing member 200.

[0035] like Figure 3 As shown, a sliding block 340 is also provided inside the guide rail 300. The first guide plate 310 and the second guide plate 320 are both provided with sliding grooves 350 that mate with the sliding block 340. The sliding block 340 is fixedly connected to the fixed shaft 100. The sliding block 340 can further improve the overall stability of the device, ensuring that the door panel 1 can operate smoothly during various descent processes, avoiding violent swaying due to inertia, thereby effectively improving safety performance.

[0036] The working principle of this application is as follows: This anti-fall device utilizes the speed change during the descent of the door panel 1 to trigger the anti-fall mechanism. Under normal circumstances, the door panel descends at a constant speed, at which time the fixed shaft 100 drives the swing member 200 to slide smoothly within the guide groove 330. Since the inner wall 311 of the first guide plate 310 is wavy, the roller 230 on the swing member 200 rolls against the inner wall 311, and under the elastic force of the torsion spring 400, the swing member 200 always remains in contact with the first guide plate 310. When the door panel 1 descends rapidly, the sliding state of the swing member 200 on the wavy inner wall 311 changes due to inertia, and its swing amplitude increases significantly. This large swing amplitude makes it easier for the locking block 210 on the swing member 200 to engage in the locking groove 321 on the second guide plate 320. Once the locking block 210 engages in the locking groove 321, the movement of the swing member 200 is restricted, thereby stopping the door panel 1 from falling further through the fixed shaft 100, achieving the purpose of anti-fall.

[0037] The beneficial effects of this application are as follows: First, a highly efficient anti-fall function is achieved using a simple mechanical structure. The coordinated work of components such as the swing element 200, guide rail 300, and fixed shaft 100 eliminates the need for a complex electronic control system, reducing costs and the risk of failure. Second, the roller 230 significantly reduces the friction between the swing element 200 and the inner wall 311 of the first guide plate 310, ensuring smooth operation of the device during long-term use, reducing wear, and extending the device's service life. Simultaneously, the elastic material between the roller 230 and the rotating shaft 240 further provides a buffering effect, not only reducing wear between components but also absorbing vibrations to a certain extent, improving the stability of the device's operation. Furthermore, the torsion spring 400, as an elastic element, provides a continuous and stable contact force for the swing element 200, ensuring that the swing element 200 accurately responds to the door panel's movement under various working conditions, thus improving the reliability of the anti-fall device. Furthermore, the inclined surface 211 on the locking block 210 allows it to smoothly disengage from the slot 321 during the door panel's ascent, without affecting the normal upward movement of the door panel and improving the ease of use of the device. The limiting block 212 further ensures a stable connection between the locking block 210 and the slot 321, preventing loosening or disengagement during the fall prevention process and enhancing the device's safety. Finally, the sliding block 340 within the guide rail 300 further improves the overall stability of the device. During the door panel's descent, regardless of speed changes, the sliding block 340 effectively prevents violent swaying due to inertia, ensuring smooth door panel operation and providing reliable safety for personnel and equipment.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fall prevention device for a lifting automatic door, characterized in that, include: A fixed shaft (100) is fixedly connected to the door panel (1); A swing member (200) is rotatably connected to the fixed shaft (100); The guide rail (300) includes a first guide plate (310) and a second guide plate (320) disposed opposite to each other, and a guide groove (330) is formed between the first guide plate (310) and the second guide plate (320). The swing member (200) is located in the guide groove (330) and can reciprocate along the axial direction of the guide groove (330). The inner wall (311) of the first guide plate (310) is wavy along the axial direction of the first guide plate (310), and the swing member (200) is attached to the inner wall (311) of the first guide plate (310); The second guide plate (320) has a plurality of slots (321) along the axial direction of the second guide plate (320), and the swing member (200) is provided with a block (210) that engages with the slots (321).

2. The fall arrestor according to claim 1, characterized in that, It also includes an elastic element, and the swinging element (200) is attached to the inner wall (311) of the first guide plate (310) under the elastic force of the elastic element.

3. The fall arrestor according to claim 2, characterized in that, The elastic element is a torsion spring (400), which is sleeved on the mounting shaft (220) of the swing member (200). One end of the torsion spring (400) is fixedly connected to the fixed shaft (100), and the other end is fixedly connected to the swing member (200).

4. The fall arrestor according to claim 3, characterized in that, The swing member (200) is provided with a roller (230) on the side near the first guide plate (310). The roller (230) is mounted on the swing member (200) via a pivot (240), and the roller (230) is in contact with the inner wall (311) of the first guide plate (310).

5. The fall arrestor according to claim 4, characterized in that, An elastic material is provided between the roller (230) and the shaft (240).

6. The fall arrestor according to claim 4, characterized in that, The other end of the torsion spring (400) is fixedly connected to the rotating shaft (240).

7. The fall arrestor according to claim 1, characterized in that, The card block (210) is provided with a slope (211), and the slope (211) is slidably connected to the opening edge of the card slot (321).

8. The fall arrestor according to claim 1, characterized in that, The card block (210) is provided with a limiting block (212), which abuts against the back side (322) of the second guide plate (320).

9. The fall arrestor according to claim 1, characterized in that, A bearing (500) is provided between the fixed shaft (100) and the swing member (200).

10. The fall arrestor according to claim 1, characterized in that, The guide rail (300) is also provided with a sliding block (340), and the first guide plate (310) and the second guide plate (320) are each provided with a sliding groove (350) that mates with the sliding block (340). The sliding block (340) is fixedly connected to the fixed shaft (100).

Images