Steel fireproof rolling shutter door

Abstract

The utility model discloses a steel fireproof rolling shutter door, which relates to the technical field of fireproof rolling shutter doors, and comprises a rolling shutter door, a driving assembly and a side frame, one side of the bottom end of the side frame is provided with a locking assembly used for locking and fixing the rolling shutter door; the bottom face of the roller shutter door is fixedly connected with an air bag bottom strip used for being in contact with the bottom face for sealing, and the side, close to the locking assembly, of the roller shutter door is fixedly connected with limiting stop teeth. The retractable bottom blocks, the hidden grooves, the limiting stop teeth and the air bag bottom strips are used in cooperation, so that in the closing process of the roller shutter door, the sealing performance of the roller shutter door can be guaranteed, meanwhile, the problem that a sealing device hinders a worker in the transferring process is solved, and the safety of the worker is improved through cooperation of a limiting frame, a reset spring, a pull rod and a positioning plate. The pull rod is pulled outwards and then rotates, the positioning plate and the positioning groove are clamped and limited, and the limiting effect of the contraction bottom block on the limiting stop teeth can be quickly relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof rolling shutter doors, in particular to a steel fireproof rolling shutter door. Background Art

[0002] Rolling shutter doors are composed of multi-jointed door panels connected in series. In a fixed slide, the doors rotate up and down with the reel above the door as the center. Rolling shutter doors play the role of horizontal separation like walls. They are composed of curtain plates, seat plates, guide rails, supports, reels, boxes, control boxes, rolling door machines, limiters, lintels, manual quick-release switch devices, push button switches and safety devices. They are generally installed in areas where it is inconvenient to use walls for separation. In some factory buildings, rolling shutter doors are usually installed to separate various areas of the factory building. Once a fire occurs, the closing of the rolling shutter doors can close the disaster area to prevent the fire from spreading. When the rolling shutter door is working, the bottom of the curtain plate and the seat plate at the bottom will contact the ground, thereby playing a sealing role.

[0003] However, long-term work will cause wear on the contact surface of the seat plate and affect the sealing effect.

[0004] A Chinese patent with publication number CN217841463U has been proposed in the prior art to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: a steel fireproof rolling shutter door with good sealing effect, comprising a door frame and a rolling shutter door body, a driving box and a sealing box are respectively arranged at the top and bottom of the door frame, a partition, a sealing groove, a self-sealing mechanism and two first connecting ears on the partition are arranged inside the sealing box, the self-sealing mechanism comprises a driving plate, two second connecting ears and two sealing shafts, a plurality of first guide rods are arranged on the driving plate, the first guide rods are sleeved with first elastic members, and two connecting rods and two swing rods are arranged at both ends of the driving plate in the width direction. The present application can reduce the impact force when the rolling shutter door body contacts the driving plate by arranging the first elastic member and the driving plate, and can reduce the friction coefficient between the rolling shutter door body and the side wall of the rolling shutter door body by arranging the sealing shaft while sealing the rolling shutter door body, thereby reducing wear and extending the service life of the equipment.

[0005] However, the sealed box in the device is too high above the ground, which will hinder the transfer of personnel in the event of a fire and may even cause people to trip, posing certain safety hazards. Utility Model Content

[0006] The purpose of the utility model is to provide a steel fireproof rolling shutter door to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A steel fireproof rolling shutter door comprises a rolling shutter door, a driving assembly and a side frame, a locking assembly for locking and fixing the rolling shutter door is arranged on one side of the bottom end of the side frame, an airbag bottom strip for contacting and sealing with the bottom surface is fixedly connected to the bottom surface of the rolling shutter door, and a limited space resistance tooth is fixedly connected to one side of the rolling shutter door close to the locking assembly.

[0009] The locking assembly includes a retractable bottom block adapted to engage with the limit blocking tooth, a pulling rod rotatably connected to one side of the retractable bottom block, and a limit frame fixedly connected to one side of the side frame. The inner wall of the side frame is provided with a hidden groove for installing the retractable bottom block, and the outer wall of the pulling rod is sleeved with a reset spring for resetting the retractable bottom block.

[0010] A positioning plate for positioning the pulling rod is fixedly connected to the outer wall of one end of the pulling rod away from the shrinking bottom block, and a positioning groove for clamping the positioning plate is provided on one side of the limiting frame.

[0011] A further improvement of the technical solution of the utility model is that the outer wall of the positioning plate is movably connected to the inner wall of the positioning groove.

[0012] A further improvement of the technical solution of the utility model is that: one end of the pulling rod away from the shrinking bottom block is fixedly connected with a cross bar for pulling the pulling rod.

[0013] A further improvement of the technical solution of the utility model is that the inner wall of the hidden groove is movably connected to the outer wall of the shrinking bottom block, and the bottom surface of the shrinking bottom block overlaps the upper surface of the limit blocking tooth.

[0014] A further improvement of the technical solution of the utility model is that one end of the pulling rod moves inside the hidden groove and penetrates to the front side of the side frame.

[0015] A further improvement of the technical solution of the utility model is that the interior of the airbag bottom strip is filled with inert gas.

[0016] A further improvement of the technical solution of the utility model is that an auxiliary arc groove is provided on the upper surface of the limit frame.

[0017] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0018] 1. The utility model provides a steel fireproof rolling shutter door, which utilizes the coordinated use of a shrinking bottom block, a hidden groove, a limit stop tooth and an airbag bottom strip, so that during the closing process of the rolling shutter door, the sealing of the rolling shutter door can be ensured while avoiding the obstruction of the sealing device during the personnel transfer process. At the same time, the airbag bottom strip is located at the bottom of the rolling shutter door to improve its sealing performance while also providing a buffering effect.

[0019] 2. The utility model provides a steel fireproof rolling shutter door, which utilizes the coordinated use of a limit frame, a reset spring, a pulling rod and a positioning plate, so that the pulling rod is pulled outward and then rotated, and the positioning plate is engaged with the positioning groove to limit the position, so that the limiting effect of the shrinking bottom block on the limit blocking tooth can be quickly released, thereby facilitating the winding and opening of the rolling shutter door. After opening, the pulling rod is rotated to reset, and the rolling shutter door can be locked next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the local structural details of the rolling shutter door of the utility model;

[0022] Figure 3 It is an enlarged schematic diagram of the structure at A of the utility model;

[0023] Figure 4 This is a schematic diagram of the locking assembly structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the airbag bottom strip structure of the utility model.

[0025] In the figure: 1. rolling door; 2. driving assembly; 3. side frame; 4. locking assembly; 5. airbag bottom strip; 6. limit blocking teeth; 7. hidden groove; 8. retractable bottom block; 9. limit frame; 10. pulling rod; 11. reset spring; 12. auxiliary arc groove; 13. positioning groove; 14. positioning plate. DETAILED DESCRIPTION

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention is further described in detail below in conjunction with the embodiments:

[0028] Example 1

[0029] like Figure 1-5As shown, the utility model provides a steel fireproof rolling shutter door, including a rolling shutter door 1, a driving assembly 2 and a side frame 3, a locking assembly 4 for locking and fixing the rolling shutter door 1 is arranged on one side of the bottom end of the side frame 3, an airbag bottom strip 5 for contacting and sealing with the bottom surface is fixedly connected to the bottom surface of the rolling shutter door 1, and a limited space resistance tooth 6 is fixedly connected to one side of the rolling shutter door 1 close to the locking assembly 4.

[0030] The locking assembly 4 includes a retractable bottom block 8 that is adapted to be positioned with the limit blocking tooth 6, a pull rod 10 rotatably connected to one side of the retractable bottom block 8, and a limit frame 9 fixedly connected to one side of the side frame 3. The inner wall of the side frame 3 is provided with a hidden groove 7 for installing the retractable bottom block 8, and the outer wall of the pull rod 10 is sleeved with a reset spring 11 for resetting the retractable bottom block 8.

[0031] When the rolling door 1 moves down and contacts the ground, the limit blocking tooth 6 will push the shrinking bottom block 8 to squeeze the reset spring 11 during the downward movement, so that the shrinking bottom block 8 moves toward the inside of the hidden groove 7. When the bottom of the rolling door 1 is in contact with the ground, the shrinking bottom block 8 will move to the surface of the limit blocking tooth 6 under the push of the reaction force of the reset spring 11, thereby limiting the limit blocking tooth 6 and further limiting the rolling door 1. The airbag bottom strip 5 is in an extruded state at this time, maintaining the sealing state of the rolling door 1 and the ground. The airbag bottom strip 5 is located at the bottom of the rolling door 1 to improve its sealing while also providing a buffering effect.

[0032] A positioning plate 14 for positioning the pulling rod 10 is fixedly connected to the outer wall of one end of the pulling rod 10 away from the shrinking bottom block 8 , and a positioning groove 13 for clamping the positioning plate 14 is provided on one side of the limiting frame 9 .

[0033] An auxiliary arc groove 12 is provided on the upper surface of the limit frame 9. When the rolling door 1 needs to be opened, the staff can pull the pulling rod 10, so that the pulling rod 10 drives the retracting bottom block 8 to move into the hidden groove 7, thereby releasing the restriction on the limit blocking tooth 6, thereby releasing the restriction on the rolling door 1, and then rotating the pulling rod 10 ninety degrees so that the positioning plate 14 is clamped to the inner wall of the positioning groove 13, limiting the position of the retracting bottom block 8, and then starting the driving component 2 to reel in the rolling door 1.

[0034] Example 2

[0035] like Figure 1-5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the outer wall of the positioning plate 14 is movably connected to the inner wall of the positioning groove 13.

[0036] One end of the pulling rod 10 away from the shrinking bottom block 8 is fixedly connected with a cross bar for pulling the pulling rod 10 .

[0037] The inner wall of the hidden groove 7 is movably connected to the outer wall of the shrinking bottom block 8, the bottom surface of the shrinking bottom block 8 overlaps the upper surface of the limit blocking tooth 6, and one end of the pulling rod 10 moves inside the hidden groove 7 and penetrates to the front side of the side frame 3.

[0038] The interior of the airbag bottom strip 5 is filled with inert gas.

[0039] The following is a detailed description of the working principle of the steel fire shutter door.

[0040] like Figure 1-5 As shown, when in use, the driving component 2 is powered on to start the rolling shutter door 1 to unwind. When the rolling shutter door 1 is unrolled close to the ground, the limit blocking tooth 6 is also close to the retractable bottom block 8. When the rolling shutter door 1 moves down to contact the ground, the limit blocking tooth 6 will push the retractable bottom block 8 to squeeze the reset spring 11 during the downward movement, so that the retractable bottom block 8 moves toward the hidden groove 7. When the bottom of the rolling shutter door 1 is in contact with the ground, the retractable bottom block 8 will move to the surface of the limit blocking tooth 6 under the push of the reaction force of the reset spring 11, limit the limit blocking tooth 6, and then limit the rolling shutter door 1. The airbag bottom strip 5 is in an extruded state at this time, maintaining the sealing state of the rolling shutter door 1 and the ground.

[0041] When the rolling door 1 needs to be opened, the staff can pull the pulling rod 10, so that the pulling rod 10 drives the retracting bottom block 8 to move into the hidden groove 7, releases the restriction on the limit blocking tooth 6, and thus releases the restriction on the rolling door 1, and then rotates the pulling rod 10 ninety degrees, so that the positioning plate 14 is clamped to the inner wall of the positioning groove 13, limits the position of the retracting bottom block 8, and then starts the driving component 2 to reel in the rolling door 1.

[0042] It should be noted that, in this article, the terms "comprises", "includes" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or still includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The above generally describes the utility model in detail, but on the basis of the utility model, some modifications or improvements can be made to it, which is obvious to a general technician in the technical field. Therefore, modifications or improvements that do not deviate from the spirit of the utility model are within the scope of protection of the utility model.

Claims

1. A steel fireproof rolling shutter door, comprising a rolling shutter door (1), a drive assembly (2) and a side frame (3), characterized in that: A locking assembly (4) for locking and fixing the rolling door (1) is arranged on one side of the bottom end of the side frame (3); an airbag bottom strip (5) for contacting and sealing with the bottom surface is fixedly connected to the bottom surface of the rolling door (1); and a limited space blocking tooth (6) is fixedly connected to the side of the rolling door (1) close to the locking assembly (4); The locking assembly (4) comprises a retractable bottom block (8) adapted to engage with the limit blocking tooth (6), a pulling rod (10) rotatably connected to one side of the retractable bottom block (8), and a limit frame (9) fixedly connected to one side of the side frame (3); the inner wall of the side frame (3) is provided with a hidden groove (7) for mounting the retractable bottom block (8); and the outer wall of the pulling rod (10) is sleeved with a reset spring (11) for resetting the retractable bottom block (8); A positioning plate (14) for positioning the pulling rod (10) is fixedly connected to the outer wall of one end of the pulling rod (10) away from the shrinking bottom block (8), and a positioning groove (13) for clamping the positioning plate (14) is provided on one side of the limiting frame (9).

2. A steel fireproof rolling shutter door according to claim 1, characterized in that: The outer wall of the positioning plate (14) is movably connected to the inner wall of the positioning groove (13).

3. The steel fire shutter door according to claim 1, characterized in that: One end of the pulling rod (10) away from the shrinking bottom block (8) is fixedly connected to a cross bar used for pulling the pulling rod (10).

4. The steel fireproof rolling shutter door according to claim 1, characterized in that: The inner wall of the hidden groove (7) is movably connected to the outer wall of the shrinking bottom block (8), and the bottom surface of the shrinking bottom block (8) overlaps the upper surface of the limit blocking tooth (6).

5. The steel fireproof rolling shutter door according to claim 1, characterized in that: One end of the pulling rod (10) moves inside the hidden groove (7) and penetrates to the front side of the side frame (3).

6. The steel fire shutter door according to claim 1, characterized in that: The interior of the airbag bottom strip (5) is filled with inert gas.

7. The steel fire shutter door according to claim 1, characterized in that: An auxiliary arc groove (12) is provided on the upper surface of the limiting frame (9).

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