Anti-falling protection device for motor-free side of roller shutter door
By designing a motor-free side anti-fall protection device for rolling shutter doors, including bracket plates, bearing seats, anti-fall gears and countershafts, the problem of poor stability of the existing rolling shutter door anti-break chain device is solved, and effective anti-fall protection for rolling shutter doors and doors is achieved to avoid accidents.
Patent Information
- Application Number
- CN202422210083.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The existing anti-chain safety protection device of roller shutter doors has poor stability and reliability, and cannot effectively prevent the door body from falling from altitude, resulting in accidents.
A motor-free side anti-fall protection device for rolling shutter doors is designed, including a bracket plate, bearing seat, anti-fall gear and countershaft. Through the design and connection of these components, stable fixation of the roller shutter door shaft is achieved to prevent the door body from falling.
Effectively prevent the roller shutter door from falling, avoid accidents caused by falling from high altitude, and improve the safety of roller shutter doors.
Smart Images
Figure CN223034891U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of engineering technology, in particular to an anti-falling protection device for the non-motor side of a rolling shutter door. Background Art
[0002] Rolling shutter doors are widely used in the market, such as in the fields of food, medicine, electronics, rubber, chemical industry, automotive, textile, logistics, environmental protection, etc. They can also be used on equipment or on production lines supporting equipment for isolation, partition, protection, etc.
[0003] Currently, the rolling shutter doors in the industry only have a chain-breaking safety protection device, and the stability and reliability of the chain-breaking protection device are poor; when the door body drops, effective protection cannot be fully achieved. Content of the Utility Model
[0004] In view of the defects in the prior art, the utility model provides an anti-falling protection device for the non-motor side of a rolling shutter door, including: a support plate, a bearing seat arranged on the support plate, an anti-falling frame arranged on the support plate and below the bearing seat, and a secondary shaft with one end connected to the bearing seat; a limiting end connected to the bearing seat is arranged at the end of the secondary shaft far from the rolling shutter door rotating shaft; the other end of the secondary shaft is connected to the rolling shutter door rotating shaft, the rolling shutter door body is wound around the rolling shutter door rotating shaft, a plurality of through holes are uniformly arranged along the length direction of the secondary shaft, and set screws are arranged in the through holes.
[0005] Preferably, the anti-falling frame includes a frame body arranged below the rolling shutter door rotating shaft and retaining bars arranged on the frame body on both sides of the rolling shutter door rotating shaft.
[0006] Preferably, an angle steel is arranged on the support plate, and the bearing seat is installed on the angle steel.
[0007] Preferably, the bearing seat includes a lower seat body arranged on the angle steel, an upper seat body arranged on the lower seat body, a bearing arranged in the upper seat body and the lower seat body, and bolts connecting the upper seat body and the lower seat body.
[0008] Preferably, reinforcing ribs are arranged at the lower end of the angle steel.
[0009] Preferably, the secondary shaft is connected to the bearing seat through a bearing, and a shaft end snap ring is arranged at one end of the secondary shaft close to the bearing.
[0010] Preferably, bending parts are arranged by extending inwards at the upper and lower ends of the support plate.
[0011] Advantages of the Utility Model
[0012] The utility model provides an anti-falling protection device on the non-motor side of a rolling shutter door, which can effectively prevent the door body of the rolling shutter door from falling, and solves the accidental accident of the rolling shutter door falling from a height and injuring people. It is installed below the rotating shaft of the rolling shutter door. When the meshing structure of the reel on the motor side becomes disengaged or the bearing of the fixed secondary shaft on the non-motor side is damaged or falls off, effective protection can be achieved when it affects the falling of the door body, preventing the door body from falling to the ground from a height and preventing accidental accidents from occurring. The utility model can be matched with all rolling shutter doors. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of an embodiment of the utility model;
[0014] Figure 2 is a schematic structural diagram of a bearing seat;
[0015] Figure 3 is a schematic structural diagram of a secondary shaft;
[0016] Wherein, 1, support plate; 2, bearing seat; 3, anti-falling frame; 4, secondary shaft; 5, rolling shutter door rotating shaft; 6, rolling shutter door; 7, set screw; 8, limit end; 9, frame body; 10, retaining bar; 11, angle steel; 12, reinforcing rib; 13, lower seat body; 14, upper seat body; 15, bearing; 16, bending part; 17, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following will describe the present utility model in detail with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made. These all belong to the protection scope of the present utility model.
[0018] Refer to Figures 1 - 3
[0019] The present utility model provides an anti-falling protection device for the side without a motor of a rolling shutter door, including: a support plate 1, a bearing seat 2 arranged on the support plate 1, an anti-falling frame 3 arranged on the support plate 1 and below the bearing seat 2, and a secondary shaft 4 with one end connected to the bearing seat 2; the other end of the secondary shaft 4 is connected to the rolling shutter door rotating shaft 5, and the rolling shutter door 6 body is wound around the rolling shutter door rotating shaft 5. A plurality of through holes are evenly arranged along the length direction of the secondary shaft 4, and set screws 7 are arranged in the through holes. The secondary shaft 4, the set screws 7 are connected to the rolling shutter door rotating shaft 5. One end of the secondary shaft 4 far from the rolling shutter door rotating shaft 5 is provided with a limiting end 8 of the bearing seat 2, and the diameter of the limiting end 8 is larger than the diameter of the secondary shaft 4. During the operation of the rolling shutter door 6, when the fixed end of the transmission secondary shaft 4 is separated from the bearing seat 2 and the secondary shaft 4 has no fixed constraint point, there is a risk that the rolling shutter door 6 body and the rotating shaft will fall from a height. Designing an anti-falling device for the rolling shutter door 6 on the support plate 1 of the rolling shutter door 6 can effectively prevent the risk of the rolling shutter door 6 falling from a height.
[0020] In some embodiments, the anti-falling frame 3 includes a frame body 9 arranged below the rolling shutter door rotating shaft 5 and retaining bars arranged on both sides of the rolling shutter door rotating shaft 5 on the frame body 9. The frame body 9 and the retaining bars 10 are directly welded and formed by angle steel, square pipe or steel plate.
[0021] In some embodiments, angle steel 11 is arranged on the support plate 1, and the bearing seat 2 is installed on the angle steel 11. The bearing seat 2 is detachably arranged on the angle steel 11 through bolts.
[0022] In some embodiments, the bearing seat 2 includes a lower seat body 13 arranged on the angle steel 11, an upper seat body 14 arranged on the lower seat body 13, a bearing 15 arranged in the upper seat body 14 and the lower seat body 13, and bolts connecting the upper seat body 14 and the lower seat body 13.
[0023] In some embodiments, a reinforcing rib 12 is arranged at the lower end of the angle steel 11 for strengthening the support.
[0024] In some embodiments, the secondary shaft 4 is connected to the bearing seat 2 through a bearing 15, and a shaft end snap ring is arranged at one end of the secondary shaft 4 close to the bearing 15.
[0025] In some embodiments, bending portions 16 are arranged to extend inwards at the upper and lower ends of the support plate 1.
[0026] Advantages of the present utility model
[0027] The utility model provides a falling prevention protection device for the non-motor side of a rolling shutter door, which can effectively prevent the door body of the rolling shutter door from falling, and solves the accidental accident of the rolling shutter door falling from a height and injuring people. It is installed below the rotating shaft of the rolling shutter door. When the meshing structure of the motor-side reel is disengaged or the bearing of the non-motor-side fixed secondary shaft is damaged or detached, effective protection can be well achieved when the falling of the door body is affected, preventing the door body from falling to the ground from a height and preventing accidents from occurring. The utility model can be matched with all rolling shutter doors.
[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.
[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.
[0030] In the present utility model, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0031] The above content is a further detailed description of the present utility model in combination with specific implementation manners, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the art of the present utility model, without departing from the concept of the present utility model, several simple deductions or replacements can still be made.
Claims
1. A rolling door non-motor side anti-fall protection device, characterized in that: include: A bracket plate, a bearing seat arranged on the bracket plate, an anti-fall frame arranged on the bracket plate and located below the bearing seat, and a secondary shaft connected to the bearing seat at one end; the secondary shaft is provided with a limiting end connected to the bearing seat at one end away from the rolling shutter door shaft; the other end of the secondary shaft is connected to the rolling shutter door shaft, the rolling shutter door body is wound around the rolling shutter door shaft, and the secondary shaft is evenly provided with a plurality of through holes along its length direction, and set screws are provided in the through holes.
2. The anti-fall protection device for the motor-free side of a rolling shutter door according to claim 1, characterized in that: The anti-fall frame comprises a frame body arranged below the rotating shaft of the rolling door and blocking rods arranged on the frame body and located on both sides of the rotating shaft of the rolling door.
3. The anti-fall protection device for the motor-free side of a rolling shutter door according to claim 1, characterized in that: An angle steel is arranged on the support plate, and the bearing seat is installed on the angle steel.
4. The anti-fall protection device for the motor-free side of a rolling shutter door according to claim 3, characterized in that: The bearing seat includes a lower seat body arranged on the angle steel, an upper seat body arranged on the lower seat body, bearings arranged in the upper seat body and the lower seat body, and bolts connecting the upper seat body and the lower seat body.
5. The anti-fall protection device for the motor-free side of a rolling shutter door according to claim 3, characterized in that: The lower end of the angle steel is provided with a reinforcing rib.
6. The anti-fall protection device for the motor-free side of a rolling shutter door according to claim 1, characterized in that: The secondary shaft is connected to the bearing seat via a bearing, and a shaft end retaining ring is provided at one end of the secondary shaft close to the bearing.
7. The anti-fall protection device for the motor-free side of a rolling shutter door according to claim 1, characterized in that: The upper and lower ends of the bracket plate are provided with bent parts extending inwardly.