Roller shutter door with safety protection device

Abstract

The utility model relates to a roller shutter door with a safety protection device, the roller shutter door with the safety protection device is simple in structure, an electromagnetic power-off brake is installed on a bearing of a roller shutter door main shaft, a chain is sensed through correlation photoelectricity, when the chain is broken or falls off, and the correlation photoelectricity cannot sense the chain, the electromagnetic power-off brake is started, and the safety protection device is started. The electromagnetic power-off brake brakes and tightly holds the roller shutter door main shaft to prevent the roller shutter door main shaft from rotating, so that the roller shutter door is prevented from descending, the roller shutter door body is prevented from being damaged, and personnel injury or damage to other facilities is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling shutter door safety facilities, in particular to a rolling shutter door with a safety protection device. Background Art

[0002] The rolling door is a series of multi-jointed door panels. In a fixed slideway, the door rotates up and down with the reel above the door as the center. The rolling door is equipped with a rolling motor, which drives the chain gear to rotate through the chain, thereby realizing the lifting and lowering of the metal door curtain. After long-term use, the chain will be fatigued and deformed. Once the chain breaks or falls off the chain gear, the metal door curtain will fall rapidly due to its own gravity, causing damage to the door body, and may also cause personal injury or damage to other facilities, posing a major safety hazard.

[0003] To sum up, a rolling door with a safety protection device is needed, which can hold the rolling door main shaft tightly after the rolling door chain is disconnected to prevent the rolling door main shaft from rotating, thereby preventing the rolling door from falling, ensuring that the rolling door body is not damaged, and avoiding personal injury or damage to other facilities. Utility Model Content

[0004] In order to solve the problem that after the rolling door chain is disconnected, the door curtain falls rapidly due to its own large gravity, causing damage to the door body, which may cause personal injury or damage to other facilities, the utility model provides a rolling door with a safety protection device. The rolling door with a safety protection device has a simple structure. An electromagnetic power-off brake is installed on the bearing of the main shaft of the rolling door. The chain is sensed by a photoelectric sensor. When the chain is disconnected or falls off and the photoelectric sensor cannot sense the chain, the electromagnetic power-off brake is activated. The electromagnetic power-off brake brakes and clamps the main shaft of the rolling door to prevent the main shaft of the rolling door from rotating, thereby preventing the rolling door from falling, ensuring that the rolling door body is not damaged, and avoiding personal injury or damage to other facilities.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A rolling door with a safety protection device, the rolling door with the safety protection device comprises a first base, a second base, a first bearing, a second bearing, a rolling door main shaft, a first gear plate, a second gear plate, a chain, an electromagnetic power-off brake, a first photoelectric, a second photoelectric, a door curtain and a motor, the first base and the second base are installed on a wall, the first base is installed with a first bearing, the second base is installed with a second bearing, the electromagnetic power-off brake is installed on the second base, one end of the rolling door main shaft is installed on the first bearing, the other end of the rolling door main shaft passes through the first gear plate, the second bearing and the electromagnetic power-off brake in sequence, the second base is installed with a motor at one end away from the electromagnetic power-off brake, the motor is connected to the second gear plate through a third bearing, the first gear plate and the second gear plate are connected through a chain, the first photoelectric and the second photoelectric are installed on a support frame, the support frame is installed on a wall, the first photoelectric and the second photoelectric face the chain between the first gear plate and the second gear plate, and the door curtain is retracted on the rolling door main shaft.

[0007] Furthermore, the first base and the second base are vertically mounted on the wall.

[0008] Furthermore, the support frame is vertically installed on the wall.

[0009] The features of this utility model are mainly reflected in:

[0010] The utility model provides a rolling door with a safety protection device. The rolling door with the safety protection device has a simple structure. An electromagnetic power-off brake is installed on the bearing of the main shaft of the rolling door. A photoelectric sensing chain is used. When the chain is disconnected or falls off and the photoelectric sensing chain cannot be sensed, the electromagnetic power-off brake is activated. The electromagnetic power-off brake brakes and clamps the main shaft of the rolling door to prevent the main shaft of the rolling door from rotating, thereby preventing the rolling door from falling, ensuring that the rolling door body is not damaged, and avoiding injuries to personnel or damage to other facilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of a rolling door with a safety protection device of the utility model

[0012] Figure 2 This is the circuit diagram of the rolling door with safety protection device of the utility model

[0013] Among them, the figure numbers are as follows: 1-wall, 2-first base, 3-second base, 4-first bearing, 5-second bearing, 6-rolling door main shaft, 7-first gear plate, 8-second gear plate, 9-chain, 10-electromagnetic power-off brake, 11-first photoelectric, 12-second photoelectric, 13-door curtain, 14-motor, 15-support frame, 16-third bearing, 17-alarm. DETAILED DESCRIPTION

[0014] The following will be combined with the accompanying drawings of the structural schematic diagram of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] As shown in FIG. 1 , a rolling door with a safety protection device comprises a first base 2, a second base 3, a first bearing 4, a second bearing 5, a rolling door main shaft 6, a first gear plate 7, a second gear plate 8, a chain 9, an electromagnetic power-off brake 10, a first photoelectric device 11, a second photoelectric device 12, a door curtain 13 and a motor 14. The first base 2 and the second base 3 are used to fix and support the rolling door main shaft 6. The rolling door main shaft 6 can rotate, thereby driving the door curtain 13 to retract, roll up and unfold. The second gear plate 8 rotates under the drive of the motor 14, and drives the first gear plate 7 to rotate through the chain 9, thereby operating the rolling door main shaft 6. The electromagnetic power-off brake 10 uses electricity to The braking effect is achieved by magnetic force. The opposing photoelectric is composed of a transmitting module and a receiving module. The opposing photoelectric is based on the photoelectric effect. When an object blocks the light, the current on the receiver will decrease or disappear, thereby triggering the switch. The present application uses two opposing photoelectrics to prevent the first opposing photoelectric 11 from failing. The second opposing photoelectric 12 can trigger the switch. The first base 2 and the second base 3 are installed on the wall 1. A first bearing 4 is installed in the first base 2, and a second bearing 5 is installed in the second base 3. The electromagnetic power-off brake 10 is installed on the second base 3. One end of the rolling door main shaft 6 is installed on the first bearing 4, and the other end of the rolling door main shaft 6 passes through the first gear plate 7, the second bearing 5 and the electric The magnetic power-off brake 10 allows the rolling door main shaft 6 to be installed on the first base 2 and the second base 3, and can rotate between the first bearing 4 and the second bearing 5. The rolling door main shaft 6 passes through the first gear plate 7, so that the first gear plate 7 can drive the rolling door main shaft 6 to rotate. The rolling door main shaft 6 passes through the electromagnetic power-off brake 10, so that the electromagnetic power-off brake 10 brakes after power is lost, and holds the rolling door main shaft 6 tightly to prevent the rolling door main shaft 6 from rotating after the chain 9 breaks, causing the door curtain 13 to fall uncontrollably, causing damage to the door curtain 13, or hitting the personnel or equipment under the door curtain, causing a safety accident. The second base 3 is equipped with a motor 14 at one end away from the electromagnetic power-off brake 10, and the motor 14 is used to control the second gear The wheel plate 8 rotates, and the first gear plate 7 and the second gear plate 8 rotate synchronously through the chain 9, thereby controlling the rotation of the rolling door main shaft 6 to achieve the extension and closing of the door curtain 13. The motor 14 is connected to the second gear plate 8 through the third bearing 16, and the first gear plate 7 and the second gear plate 8 are connected through the chain 9. The first and second photoelectric pairs 11 and 12 are installed on the support frame 15, and the support frame 15 is installed on the wall 1. The first and second photoelectric pairs 11 and 12 face the chain 9 between the first gear plate 7 and the second gear plate 8. The first and second photoelectric pairs 11 and 12 trigger the switch by sensing the existence of the chain 9, and the door curtain 13 shrinks on the rolling door main shaft 6.

[0016] The first base 2 and the second base 3 are vertically mounted on the wall 1 , and the support frame 15 is vertically mounted on the wall 1 .

[0017] The specific workflow is as follows:

[0018] As shown in Figure (2), the switch for the door curtain 13 to move upward is SB2, the switch for the door curtain 13 to move downward is SB3, the switch for the door curtain 13 to reach the upper limit is SB4, the switch for the door curtain 13 to reach the lower limit is SB5, the switch for the first pair of photoelectric sensors 11 is SB11, the switch for the second pair of photoelectric sensors 12 is SB12, KM10 is the brake for the electromagnetic power-off brake 10, KM14 is the brake for the motor 14, KM1 is the forward rotation of the motor, and KM2 is the reverse rotation of the motor. When the rolling door operates normally, the first pair of photoelectric sensors 11 and the second pair of photoelectric sensors 12 can both detect the chain 9. At this time, the switch SB11 of the first pair of photoelectric sensors 11 and the switch SB12 of the second pair of photoelectric sensors 12 SB12 is closed, KM3 is energized and closed, the normally open contact of SKM3 is closed, the normally closed contact of SKM3 is disconnected, the alarm 17 is not energized and no alarm is sounded, the switch SB2 for the door curtain 13 to turn upward is pressed, KM1 is energized, the motor 14 rotates forward, SKM1 is closed, KM10 and KM14 are energized, KM10 and KM14 are not braked, the main shaft 6 of the rolling door rotates forward, the door curtain 13 rolls up, and the rolling door opens; the switch SB3 for the door curtain 13 to turn downward is pressed, KM2 is energized, the motor 14 reverses, SKM2 is closed, KM10 and KM14 are energized, KM10 and KM14 are not braked, the main shaft 6 of the rolling door reverses, the door curtain 13 is lowered, and the rolling door closes.

[0019] If the switch SB2 for the door curtain 13 to move upward is pressed, after the door curtain 13 reaches the upper limit, the normally closed contact SB4 is disconnected, KM1 loses power, SKM1 is disconnected, KM10 and KM14 lose power, KM10 and KM14 brake, the motor 14 stops rotating forward, the electromagnetic power-off brake 10 brakes, and the rolling door main shaft 6 stops rotating; if the switch SB3 for the door curtain 13 to move downward is pressed, after the door curtain 13 reaches the lower limit, the normally closed contact SB5 is disconnected, KM2 loses power, SKM2 is disconnected, KM10 and KM14 lose power, KM10 and KM14 brake, the motor 14 stops rotating reversely, the electromagnetic power-off brake 10 brakes, and the rolling door main shaft 6 stops rotating.

[0020] When the chain 9 is disconnected, the first pair of photoelectric sensors 11 and the second pair of photoelectric sensors 12 do not detect the chain 9, the switch SB11 of the first pair of photoelectric sensors 11 and the switch SB12 of the second pair of photoelectric sensors 12 are disconnected, the KM3 coil is out of power, the normally closed contact of KM3 is reset and closed, the alarm 17 is energized to alarm, and the normally open contact of KM3 is reset and disconnected. At this time, the KM1 or KM2 coil is out of power, and at the same time, the normally open contacts of SKM1 and SKM2 are reset and disconnected, the brake KM10 of the electromagnetic power-off brake 10 and the brake KM14 of the motor 14 are powered off and braked, the main shaft 6 of the rolling door stops rotating, and the door curtain 13 stops shrinking or unfolding, ensuring that the rolling door body is not damaged and avoiding injuries to personnel or damage to other facilities.

[0021] According to the above process, when the chain is disconnected or falls off, the photoelectric sensor cannot sense the chain and the electromagnetic power-off brake is activated. The electromagnetic power-off brake clamps the main shaft of the rolling door to prevent the main shaft of the rolling door from rotating, thereby preventing the rolling door from falling, ensuring that the rolling door body is not damaged, and avoiding personal injury or damage to other facilities.

[0022] To sum up, the rolling door with a safety protection device has a simple structure. An electromagnetic power-off brake is installed on the bearing of the rolling door main shaft. A photoelectric sensing chain is used. When the chain is disconnected or falls off and the photoelectric sensing chain cannot be sensed, the electromagnetic power-off brake is activated. The electromagnetic power-off brake brakes and clamps the rolling door main shaft to prevent the rolling door main shaft from rotating, thereby preventing the rolling door from falling, ensuring that the rolling door body is not damaged, and avoiding personal injury or damage to other facilities.

[0023] It should be noted that the above is only a preferred embodiment of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments. Without departing from the spirit or basic features of the utility model, the utility model can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A rolling door with a safety protection device, characterized in that: The rolling door with a safety protection device comprises a first base (2), a second base (3), a first bearing (4), a second bearing (5), a rolling door main shaft (6), a first gear plate (7), a second gear plate (8), a chain (9), an electromagnetic power-off brake (10), a first photoelectric device (11), a second photoelectric device (12), a door curtain (13) and a motor (14), wherein the first base (2) and the second base (3) are mounted on a wall (1), a first bearing (4) is mounted in the first base (2), a second bearing (5) is mounted in the second base (3), the electromagnetic power-off brake (10) is mounted on the second base (3), one end of the rolling door main shaft (6) is mounted on the first bearing (4), and the rolling door main shaft (6) is mounted on the first bearing (4). ) passes through the first gear plate (7), the second bearing (5) and the electromagnetic power-off brake (10) in sequence; a motor (14) is installed at one end of the second base (3) away from the electromagnetic power-off brake (10); the motor (14) is connected to the second gear plate (8) via a third bearing (16); the first gear plate (7) and the second gear plate (8) are connected via a chain (9); the first photoelectric pair (11) and the second photoelectric pair (12) are installed on a support frame (15); the support frame (15) is installed on a wall (1); the first photoelectric pair (11) and the second photoelectric pair (12) face the chain (9) between the first gear plate (7) and the second gear plate (8); and the door curtain (13) is retracted on the main shaft (6) of the rolling door.

2. The rolling door with a safety protection device according to claim 1, characterized in that: The first base (2) and the second base (3) are vertically mounted on the wall (1).

3. The rolling door with a safety protection device according to claim 2, characterized in that: The support frame (15) is vertically mounted on the wall (1).

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