Composite double-layer steel roller shutter door

Abstract

The utility model provides a composite type double-layer steel roller shutter door, which belongs to the technical field of roller shutter doors and comprises two mounting frames fixed with walls on two sides, driving parts are mounted at the tops of the two mounting frames, a winding roller is arranged between the driving parts, a motor is arranged in the winding roller, and the motor is connected with the mounting frames. The motor and the wind-up roller are in linkage fit through an abutting portion, fan blades are further arranged on the motor, and a roller shutter door is fixed to the lower end of the wind-up roller. The fireproof roller shutter door solves the problems that in the using process of an existing fireproof roller shutter door, when the indoor temperature rises sharply due to indoor fire disasters, the roller shutter door controlled to ascend and descend through a motor is prone to being damaged due to high temperature, and then firefighters cannot open the roller shutter door in time to enter a room for fire fighting; and the disaster situation is more serious.

Description

Technical Field

[0001] This utility model belongs to the field of roller shutter technology, specifically relating to a composite double-layer steel roller shutter door. Background Technology

[0002] Fire-resistant roller shutters are fire-resistant and heat-insulating facilities suitable for large openings in buildings. In addition to the functions of ordinary doors, they also have special functions such as fire prevention, smoke isolation, suppression of fire spread, and protection of personnel evacuation. The fire-resistant roller shutter curtain achieves fire isolation by raising and lowering the shutter through a transmission device and control system, thereby controlling the fire within a predetermined range to effectively prevent the spread of fire, ensure the safe evacuation of people, ensure unobstructed passage for firefighters to fight fires, and prevent and reduce major losses of people's lives and national property caused by fire. They are an indispensable fire protection facility in modern buildings.

[0003] When existing fire-resistant roller shutters are in use, if an indoor fire causes a rapid increase in indoor temperature, the motor-controlled roller shutters are prone to damage due to high temperatures. This can prevent firefighters from opening the roller shutters in time to enter the room and fight the fire, thus exacerbating the disaster. Summary of the Invention

[0004] This utility model provides a composite double-layer steel roller shutter door, which aims to solve the problem that when existing fireproof roller shutter doors are used and indoor temperatures rise sharply due to an indoor fire, the motor-controlled roller shutter door is prone to damage due to high temperatures, which in turn prevents firefighters from opening the roller shutter door in time to enter the room to fight the fire, thus making the disaster more serious.

[0005] This utility model embodiment provides a composite double-layer steel roller shutter door, including mounting brackets fixed to the two side walls, a drive unit installed on the top of the two mounting brackets, a winding roller arranged between the drive units, a motor installed in the winding roller, the motor and the winding roller being linked and cooperated through an abutment part, a fan blade is also provided on the motor, and the roller shutter door is fixed to the lower end of the winding roller.

[0006] Furthermore, the drive unit includes a drive box fixedly connected to the top of the mounting bracket, and two electric push rods are provided in each side of the drive box. The bottom of the electric push rods is fixedly connected to the inner wall surface of the drive box on the side closest to the wall.

[0007] By adopting the above technical solution, the electric push rod can push the contact part located in the take-up roller to contact the contact part on the motor.

[0008] Furthermore, the take-up roller is hollow, and its left and right ends are rotatably connected to the drive boxes on both sides.

[0009] By adopting the above technical solution, the take-up roller can rotate between the drive boxes on both sides.

[0010] Furthermore, the motor includes an inner stator and an outer rotor. The outer rotor is disposed inside the take-up roller, and the inner stator is disposed inside the outer rotor and rotates in cooperation with the outer rotor.

[0011] By adopting the above technical solution, when the motor starts, the outer rotor can drive the take-up roller to rotate under the action of the contact part.

[0012] Furthermore, the contact portion includes a first friction plate slidably connected to both ends of the inner wall surface of the take-up roller and a second friction plate fixedly connected to both ends of the outer rotor. The first friction plate can only slide in the same axial direction as the take-up roller, and the first friction plate and the second friction plate abut against each other.

[0013] By adopting the above technical solution, the electric push rod can push the first friction plate to slide towards the second friction plate, so that the first friction plate contacts the second friction plate. Then, when the outer rotor drives the second friction plate to rotate, the first friction plate can rotate synchronously with the second friction plate, thereby enabling the winding roller to wind up the roller shutter door.

[0014] Furthermore, the first friction plate has a groove on the side opposite to the electric push rod, and the output end of the electric push rod slides in the groove.

[0015] By adopting the above technical solution, the output end of the electric push rod slides in the groove, so that when the first friction plate rotates, the electric push rod cannot obstruct the rotation of the first friction plate.

[0016] Furthermore, both the first friction plate and the second friction plate have a first circular hole in the middle, and the drive box has a second circular hole corresponding to the first circular hole on the side opposite to the winding roller. The two ends of the inner stator pass through the first circular hole and the second circular hole and are fixedly connected to the other side of the drive box.

[0017] By adopting the above technical solution, the two ends of the inner stator pass through the first circular hole and the second circular hole, and are fixedly connected to the drive boxes on both sides.

[0018] Furthermore, the fan blades are disposed on the outer surface of the outer rotor, and the fan blades are curved arc-shaped.

[0019] By adopting the above technical solution, the curved fan blades can rotate synchronously with the rotation of the outer rotor, thereby ensuring air circulation in the winding roller and facilitating the cooling of the motor.

[0020] Furthermore, the drive box and the first friction plate are provided with ventilation holes that communicate with each other, and the top of both sides of the drive box is grid-shaped.

[0021] By adopting the above technical solution, under the action of the fan blades, external cold air can enter the take-up roller from the grid at the top of the drive box, thereby dissipating heat from the motor, and blowing the air that has absorbed heat out from the top of the drive box on the other side. The ventilation holes allow the air to circulate smoothly.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. With the motor, when the motor is started, the outer rotor can drive the take-up roller to rotate under the action of the contact part. When the contact part no longer acts on the outer rotor, the outer rotor can rotate independently.

[0024] 2. With the provision of a drive unit, the electric push rod can push the contact part located in the take-up roller to contact the contact part on the motor.

[0025] 3. By setting the contact part, the outer rotor drives the second friction plate to rotate. When the first friction plate contacts the second friction plate, the first friction plate can rotate synchronously with the second friction plate, thereby enabling the winding roller to wind up the roller shutter door.

[0026] 4. Through the design of the fan blades and ventilation holes, the curved fan blades can rotate synchronously with the rotation of the outer rotor. Under the action of the fan blades, the external cold air can enter the take-up roller from the top grid of the drive box, thereby dissipating heat from the motor. The air that has absorbed heat is blown out from the top of the drive box on the other side. Activating the ventilation holes allows the air to circulate smoothly.

[0027] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a front view structural diagram of an embodiment of the present utility model;

[0030] Figure 2 This is a partial perspective structural diagram of an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the front structure of the drive box according to an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the front structure of the first friction plate according to an embodiment of the present invention;

[0033] Reference numerals: 1. Mounting bracket; 2. Drive unit; 21. Drive box; 211. Second circular hole; 22. Electric push rod; 3. Winding roller; 4. Motor; 41. Inner stator; 42. Outer rotor; 5. Contact part; 51. First friction plate; 511. Groove; 52. Second friction plate; 512. Ventilation hole; 53. First circular hole; 6. Fan blade; 7. Roller shutter door. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] Reference Figure 1-4 This utility model embodiment proposes a composite double-layer steel roller shutter door, including mounting brackets 1 fixed to the two side walls. A drive unit 2 is installed on the top of the two mounting brackets 1. The drive unit 2 includes a drive box 21 fixedly connected to the top of the mounting bracket 1. Two electric push rods 22 are provided in each drive box 21. The bottom of the electric push rod 22 is fixedly connected to the inner wall surface of the drive box 21 near the wall. The electric push rod 22 can push the contact part 5 located in the winding roller 3 to contact the contact part 5 on the motor 4.

[0036] Reference Figure 1-4 A take-up roller 3 is provided between the drive units 2. The take-up roller 3 is hollow. The left and right ends of the take-up roller 3 are rotatably connected to the drive boxes 21 on both sides. The take-up roller 3 can rotate between the drive boxes 21 on both sides.

[0037] Reference Figure 1-4 The take-up roller 3 is equipped with a motor 4, which includes an inner stator 41 and an outer rotor 42. The outer rotor 42 is located inside the take-up roller 3, and the inner stator 41 is located inside the outer rotor 42 and rotates in cooperation with the outer rotor 42. When the motor 4 is started, the outer rotor 42 can drive the take-up roller 3 to rotate under the action of the contact part 5.

[0038] Reference Figure 1-4The motor 4 and the take-up roller 3 are linked by an abutment part 5. The abutment part 5 includes a first friction plate 51 slidably connected to both ends of the inner wall of the take-up roller 3 and a second friction plate 52 fixedly connected to both ends of the outer rotor 42. The first friction plate 51 has a groove 511 on the side facing the electric push rod 22. The output end of the electric push rod 22 slides in the groove 511. When the first friction plate 51 rotates, the electric push rod 22 cannot obstruct the rotation of the first friction plate 51. The first friction plate 51 can only slide in the same axial direction as the take-up roller 3. The first friction plate 51 and the second friction plate 52 are mutually... This contact action allows the electric push rod 22 to push the first friction plate 51 towards the second friction plate 52, causing the first friction plate 51 to contact the second friction plate 52. As the outer rotor 42 drives the second friction plate 52 to rotate, the first friction plate 51 can rotate synchronously with the second friction plate 52, thereby enabling the winding roller 3 to wind up the roller shutter 7. The first friction plate 51 and the second friction plate 52 are both provided with a first circular hole 53 in the middle. The drive box 21 is provided with a second circular hole 211 corresponding to the first circular hole 53 on the side opposite to the winding roller 3. The two ends of the inner stator 41 pass through the first circular hole 53 and the second circular hole 211 and are fixedly connected to the other side of the drive box 21.

[0039] Reference Figure 1-4 The motor 4 is also equipped with a fan blade 6, which is located on the outer surface of the outer rotor 42. The fan blade 6 is curved. The drive box 21 and the first friction plate 51 are also equipped with ventilation holes 512 that are connected to each other. The top of both drive boxes 21 is grid-shaped. The curved fan blade 6 can rotate synchronously with the rotation of the outer rotor 42. Under the action of the fan blade 6, the cold air outside can enter the take-up roller 3 from the grid on the top of the drive box 21, thereby dissipating heat from the motor 4 and blowing the air that has absorbed heat out from the top of the other drive box 21. The ventilation hole 512 allows the air to circulate smoothly. The lower end of the take-up roller 3 is fixed with a roller shutter door 7.

[0040] The specific implementation method is as follows: During normal use, the electric push rod 22 is activated, causing the first friction plate 51 to be pushed towards the second friction plate 52 by the electric push rod 22, thereby bringing the first friction plate 51 into contact with the second friction plate 52. The motor 4 is then activated, causing the outer rotor 42 to rotate. The outer rotor 42 drives the second friction plate 52 to rotate. When the first friction plate 51 and the second friction plate 52 are in contact, the second friction plate 52 drives the first friction plate 51 to rotate. Consequently, the winding roller 3 rotates synchronously under the drive of the first friction plate 51, realizing the function of winding or lowering the roller shutter door 7. When the roller shutter door 7 is closed and a fire occurs, in order to prevent the electric motor of the roller shutter door 7 from being damaged, the following measures are taken: If the machine 4 cannot be opened due to prolonged high temperature, the control motor 4 will start. The first friction plate 51 and the second friction plate 52 will not be in contact, and the outer rotor 42 will rotate independently. This will cause the fan blades 6 on the outer rotor 42 to rotate, and then the external cold air can enter the take-up roller 3 from the grid on the top of the drive box 21 on one side and the ventilation holes 512 on the first friction plate 51 and the drive box 21, so as to cool down the motor 4. The hot air will be blown out from the grid on the top of the drive box 21 on the other side, so as to cool down the motor 4 and the electric push rod 22. This will prevent the motor 4 from being damaged due to high temperature, which would prevent firefighters from entering the room to fight the fire.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A composite double-layer steel roller shutter door, comprising mounting brackets (1) fixed to the side walls, characterized in that, A drive unit (2) is installed on the top of the two mounting brackets (1), and a winding roller (3) is arranged between the drive units (2). A motor (4) is arranged in the winding roller (3), and the motor (4) and the winding roller (3) are linked together through a contact part (5). A fan blade (6) is also provided on the motor (4), and a roller shutter door (7) is fixed at the lower end of the winding roller (3).

2. The composite double-layer steel roller shutter door according to claim 1, characterized in that: The drive unit (2) includes a drive box (21) fixedly connected to the top of the mounting bracket (1). Two electric push rods (22) are provided in each side of the drive box (21). The bottom of the electric push rod (22) is fixedly connected to the inner wall surface of the drive box (21) near the wall.

3. A composite double-layer steel roller shutter door according to claim 2, characterized in that: The take-up roller (3) is hollow, and the left and right ends of the take-up roller (3) are rotatably connected to the drive boxes (21) on both sides.

4. A composite double-layer steel roller shutter door according to claim 1, characterized in that: The motor (4) includes an inner stator (41) and an outer rotor (42). The outer rotor (42) is disposed inside the take-up roller (3), and the inner stator (41) is disposed inside the outer rotor (42) and rotates in cooperation with the outer rotor (42).

5. A composite double-layer steel roller shutter door according to claim 4, characterized in that: The contact part (5) includes a first friction plate (51) slidably connected to both ends of the inner wall of the take-up roller (3) and a second friction plate (52) fixedly connected to both ends of the outer rotor (42). The first friction plate (51) can only slide in the same direction as the axial direction of the take-up roller (3), and the first friction plate (51) and the second friction plate (52) abut against each other.

6. A composite double-layer steel roller shutter door according to claim 5, characterized in that: The first friction plate (51) has a groove (511) on the side opposite to the electric push rod (22), and the output end of the electric push rod (22) slides in the groove (511).

7. A composite double-layer steel roller shutter door according to claim 5, characterized in that: The first friction plate (51) and the second friction plate (52) are provided with a first circular hole (53) in the middle. The drive box (21) is provided with a second circular hole (211) corresponding to the first circular hole (53) on the side opposite to the winding roller (3). The two ends of the inner stator (41) pass through the first circular hole (53) and the second circular hole (211) and are fixedly connected to the other side of the drive box (21).

8. A composite double-layer steel roller shutter door according to claim 4, characterized in that: The fan blade (6) is disposed on the outer surface of the outer rotor (42) and the fan blade (6) is curved.

9. A composite double-layer steel roller shutter door according to claim 7, characterized in that: The drive box (21) and the first friction plate (51) are also provided with ventilation holes (512) that are connected to each other, and the top of the drive box (21) on both sides is grid-shaped.

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