Safety device for roller shutter door

Abstract

This utility model relates to the field of safety protection technology and discloses a safety protection device for roller shutter doors, including an assembly frame. An electric telescopic cylinder is fixed to the side wall of the assembly frame. A receiving plate is welded to the end of the piston rod of the electric telescopic cylinder. Through holes are formed at the four corners of the surface of the receiving plate. Buffer rods are movably fitted inside each of the through holes. A contact plate is fixed to the top of each buffer rod. Springs are fitted between the receiving plate and the contact plate on the surface of each limiting rod. An assembly plate is welded to the side wall of the assembly frame below the electric telescopic cylinder. A fitting groove is formed on the surface of the assembly plate, and a movable plate is movably fitted inside the fitting groove. This utility model achieves electric linkage by electrically connecting the electric roller shutter door to the safety protection device, eliminating the need for additional manual operation for roller shutter door anti-fall measures. It is easy and convenient to use and has a stable structure.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology, and in particular to a safety protection device for roller shutter doors. Background Technology

[0002] Electric roller shutter doors are doors with multiple articulated door panels linked together. They are located within fixed tracks and rotate up and down by a motor, with the upper roller as the center.

[0003] Electric roller shutters, widely used in commercial shops, warehouses, and other locations, can cause personal injury and property damage if they fall. To improve the safety of electric roller shutters, anti-fall mechanisms are necessary. The traditional solution is to install latches, which can solve the problem of uncontrolled falls to some extent. However, each time an electric roller shutter is started or lowered, personnel are required to insert or remove the latches, which is very troublesome. It is necessary to combine electric roller shutters with anti-fall mechanisms to simplify the operation process and improve the safety performance of the roller shutters. Therefore, a roller shutter safety protection device has been proposed. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to propose a safety protection device for roller shutter doors. By electrically connecting the electric roller shutter door to this safety protection device, electrical linkage is achieved, eliminating the need for additional manual operation for roller shutter door anti-fall measures. It is easy and convenient to use, and has a stable structure.

[0005] According to the present invention, a safety protection device for roller shutter doors includes an assembly frame. An electric telescopic cylinder is fixed to the side wall of the assembly frame. A receiving plate is welded and fixed to the end of the piston rod of the electric telescopic cylinder. Through holes are opened at the four corners of the surface of the receiving plate. A buffer rod is movably fitted inside each of the through holes. A contact plate is fixed to the top of the buffer rod. A spring is fitted on the surface of the buffer rod and between the receiving plate and the contact plate. An assembly plate is welded and fixed to the side wall of the assembly frame and below the electric telescopic cylinder. A fitting groove is opened on the surface of the assembly plate, and a movable plate is movably fitted inside the fitting groove. A support rod is fixed between the end of the movable plate and the receiving plate.

[0006] Preferably, a limiting rod is fixed inside the mounting groove, and a limiting hole for mounting the limiting rod is provided through the side of the movable plate.

[0007] Preferably, a baffle is fixed to the surface of the assembly plate and outside the fitting slot.

[0008] Preferably, a fixing joint is fixed to the middle of the lower surface of the receiving plate, and the fixing joint is fixedly connected to the top of the support rod.

[0009] Preferably, a plurality of first screws are welded and fixed to the side wall of the electric telescopic cylinder, a plurality of second screws are welded and fixed to the side wall of the assembly frame, a connector is provided between the assembly frame and the electric telescopic cylinder, the first screws are fitted with the connector and threaded with a first locking nut, and the second screws are fitted with the connector and threaded with a second locking nut.

[0010] Preferably, the four corners of the assembly frame are provided with assembly holes, and assembly screws are threaded between the assembly holes and the wall.

[0011] The beneficial effects of this utility model are: 1. By electrically connecting the electric roller shutter door to this safety protection device, electric linkage is achieved, eliminating the need for additional manual operation to install anti-fall measures for the roller shutter door, making it easy and convenient to use; 2. This safety protection device has high structural strength. The pressure on the piston end of the electric telescopic cylinder is shared by the support rod, the moving plate and the assembly plate, resulting in minimal damage to the electric telescopic cylinder body when receiving the roller shutter door. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the roller shutter door safety protection device proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the assembly structure of the receiving plate of the roller shutter door safety protection device proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the moving plate assembly structure of the roller shutter door safety protection device proposed in this utility model.

[0015] Figure 4 This is a schematic diagram of the movable plate structure of the roller shutter door safety protection device proposed in this utility model.

[0016] Figure 5 This is a schematic diagram of the circuit connection between the safety protection device for the roller shutter door and the electric roller shutter door proposed in this utility model.

[0017] In the diagram: 1. Assembly frame; 2. Electric telescopic cylinder; 3. Receiving plate; 4. Through hole; 5. Buffer rod; 6. Contact plate; 7. Spring; 8. Assembly plate; 9. Fitting slot; 10. Moving plate; 11. Support rod; 12. Limiting rod; 13. Limiting hole; 14. Baffle. Detailed Implementation

[0018] Reference Figure 1-5The roller shutter door safety protection device includes an assembly frame 1. An electric telescopic cylinder 2 is fixed to the side wall of the assembly frame 1. A receiving plate 3 is welded and fixed to the end of the piston rod of the electric telescopic cylinder 2. Through holes 4 are opened at the four corners of the surface of the receiving plate 3. Buffer rods 5 are movably fitted inside the through holes 4. A contact plate 6 is fixed to the top of the buffer rods 5. Springs 7 are fitted on the surface of the buffer rods 5 and between the receiving plate 3 and the contact plate 6. An assembly plate 8 is welded and fixed to the side wall of the assembly frame 1, located below the electric telescopic cylinder 2. A fitting groove 9 is formed on the surface of the assembly plate 8, and a movable plate 10 is movably fitted inside the fitting groove 9. The internal grooves of the fitting groove 9 and the mating surfaces on the sides of the movable plate 10 can better transmit and distribute impact. (Reference) Figure 4 A support rod 11 is fixed between the end of the movable plate 10 and the receiving plate 3.

[0019] The inner part of the mounting groove 9 is fixed with a limiting rod 12, and the side of the movable plate 10 is provided with a limiting hole 13 for mounting the limiting rod 12.

[0020] A baffle 14 is fixed on the surface of the assembly plate 8 and outside the mounting groove 9. The baffle 14 is used to prevent one end of the moving plate 10 from tilting up, which increases the upper limit of the bearing capacity to a certain extent.

[0021] A fixing joint is fixed in the middle of the lower surface of the receiving plate 3, and the fixing joint is fixedly connected to the top of the support rod 11.

[0022] Multiple first screws are welded and fixed to the side wall of the electric telescopic cylinder 2, and multiple second screws are welded and fixed to the side wall of the assembly frame 1. A connector is provided between the assembly frame 1 and the electric telescopic cylinder 2. The first screws are fitted with the connector and threaded with a first locking nut. The second screws are fitted with the connector and threaded with a second locking nut.

[0023] Assembly holes are provided at all four corners of the assembly frame 1. Assembly screws are threaded between the assembly holes and the wall, allowing for assembly at a suitable position on the wall, and the assembly position is flexible.

[0024] This roller shutter door safety protection device is electrically connected to an electric roller shutter door, see reference. Figure 5The circuit configuration diagram shows that the electric roller shutter door has a built-in electric control system. The electric control system, consisting of limit switches and intermediate relays, time relays, power adapters, electric push rods, and other components configured according to site conditions, achieves the working requirements. When the roller shutter door is activated by pressing the up button, it begins to move upward. When it reaches the top stop position, the upper limit switch button is triggered, and the roller shutter door stops. At the same time, the electric telescopic cylinder 2, installed on the upper part of the roller shutter door track, extends its piston end to the end face of the track through electronic control, which prevents the roller shutter door from falling unexpectedly. When the roller shutter door is closed, pressing the down button causes the roller shutter door to move downward. At the same time, the electric telescopic cylinder 2 is energized and retracts after a delay, keeping the roller shutter door closed normally. The safety protection device for this roller shutter door is installed on one side wall of the roller shutter door guide rail. When the piston section of the electric telescopic cylinder 2 extends, the receiving plate 3 moves to the surface of the guide rail, where it can catch the bottom of the falling roller shutter door. The contact plate 6 mounted on the surface of the receiving plate 3 contacts the bottom of the roller shutter door. The spring 7 acts as an energy-absorbing component, absorbing part of the impact force when the roller shutter door falls, protecting the equipment. An assembly plate 8, a mounting groove 9, a moving plate 10, and a support rod 11 are arranged as support components below the receiving plate 3 to catch the impact of the falling roller shutter door. The internal groove of the mounting groove 9... The mating surface opened on the side of the movable plate 10 can better transmit and distribute the impact. The baffle 14 fixed outside the mounting groove 9 and the limiting rod 12 fixed inside the mounting groove 9 can both serve as reinforcing components of the movable plate 10, improving the stability of the movable plate 10. The support rod 11 serves as a force transmission component. All of the above structural configurations are designed to improve structural strength, prevent the roller shutter from falling, and protect the piston end of the electric telescopic cylinder 2. If the structural strength is insufficient, the piston end of the electric telescopic cylinder 2 will directly serve as a bearing structure to support the roller shutter, causing great damage to the electric telescopic cylinder 2.

Claims

1. A safety protection device for roller shutter doors, characterized in that: The assembly includes an assembly frame, on the side wall of which an electric telescopic cylinder is fixed. A receiving plate is welded to the end of the piston rod of the electric telescopic cylinder. Through holes are opened at the four corners of the surface of the receiving plate. Buffer rods are movably fitted inside the through holes. A contact plate is fixed to the top of the buffer rods. Springs are fitted on the surface of the buffer rods and between the receiving plate and the contact plate. An assembly plate is welded and fixed to the side wall of the assembly frame and below the electric telescopic cylinder. A fitting groove is opened on the surface of the assembly plate, and a movable plate is movably fitted inside the fitting groove. A support rod is fixed between the end of the movable plate and the receiving plate.

2. The safety protection device for roller shutter doors according to claim 1, characterized in that: A limiting rod is fixed inside the mounting slot, and a limiting hole for mounting the limiting rod is provided through the side of the movable plate.

3. The safety protection device for roller shutter doors according to claim 1, characterized in that: A baffle is fixed to the surface of the assembly plate and outside the fitting slot.

4. The safety protection device for roller shutter doors according to claim 1, characterized in that: A fixing joint is fixed to the middle of the lower surface of the receiving plate, and the fixing joint is fixedly connected to the top of the support rod.

5. The safety protection device for roller shutter doors according to claim 1, characterized in that: The electric telescopic cylinder has multiple first screws welded and fixed to its side wall, and the assembly frame has multiple second screws welded and fixed to its side wall. A connector is provided between the assembly frame and the electric telescopic cylinder. The first screws are fitted with the connector and threaded with a first locking nut. The second screws are fitted with the connector and threaded with a second locking nut.

6. The safety protection device for roller shutter doors according to claim 1, characterized in that: The assembly frame has assembly holes at all four corners, and assembly screws are threaded between the assembly holes and the wall.

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