A fire-proof roller shutter with access to people

Abstract

The present invention relates to the technical field of fireproof roller shutters, and in particular to a fireproof roller shutter with access to people. The present invention provides a fireproof roller shutter with access to people that can effectively prevent the spread of smoke and fire and can allow people to pass through. A fireproof roller shutter with access to people includes a mounting shell, a servo motor, a gear chain assembly, a reel and a fire prevention mechanism. A servo motor is mounted on the inner side of the left portion of the mounting shell, and a reel is rotatably connected to the interior of the shell. A gear chain assembly is connected between the reel and the output shaft of the servo motor, and a fire prevention mechanism is provided on the reel. The present invention controls the operation of the servo motor to lower the fireproof cloth on the reel onto the guide frame. Under the action of the counterweight block, the fireproof cloth can be ensured to fall, thereby achieving the effect of preventing the spread of smoke and fire. At the same time, the connecting rod and the door cloth can be controlled to rotate and open, thereby enabling people to pass through, thereby effectively preventing the spread of smoke and fire while allowing people to pass through.

Description

Technical Field

[0001] The present invention relates to the technical field of fireproof roller shutters, and in particular to a man-accessible fire-blocking roller shutter. Background Art

[0002] As the name implies, fireproof roller shutters are roller shutters with fireproof functions. For their fireproof properties, fireproof roller shutters include fireproof decorative layers, fireproof layers, fireproof blanket layers, fireproof and radiation-proof cloth layers, etc. At present, metal plywood is generally used to connect the various structural layers into one. Existing fireproof roller shutters are raised and lowered by transmission devices and control systems. In addition to having the functions of ordinary doors, they also have special functions of fire prevention, smoke isolation, suppression of fire spread, and protection of personnel evacuation. They can effectively prevent smoke and fire from spreading, and protect the safety of life and property. They are indispensable fire prevention facilities in modern buildings. However, when a fire occurs, the fireproof roller shutters need to be opened during the evacuation process to ensure the passage and evacuation of personnel. In this way, they cannot play the role of smoke isolation and suppression of fire spread during the passage of personnel, and thus cannot effectively protect the safety of life and property.

[0003] Therefore, it is necessary to design a fireproof fire curtain that can effectively prevent the spread of smoke and fire and can allow people to pass through. Summary of the Invention

[0004] In order to overcome the shortcomings of existing fire-proof roller shutters that need to be opened during the evacuation of personnel, and thus cannot play the role of isolating smoke and suppressing the spread of fire during the passage of personnel, and thus cannot effectively protect the safety of people's lives and property, the present invention provides a passable fire-blocking fire-proof roller shutter that can effectively prevent the spread of smoke and fire and can allow people to pass through.

[0005] A fireproof roller shutter with access to personnel, comprising a mounting shell, a servo motor, a gear and tooth chain group, a winding wheel and a fire prevention mechanism. The servo motor is mounted on the inner left side of the mounting shell, the winding wheel is rotatably connected to the interior of the shell, a gear and tooth chain group is connected between the winding wheel and the output shaft of the servo motor, and the winding wheel is provided with a fire prevention mechanism for isolating fire and providing access to personnel.

[0006] More preferably, the fire prevention mechanism includes a fireproof cloth, a mounting rod, a connecting rod, a door cloth, a counterweight, a guide frame, a sealing plate, a first spring and a sealing frame. The fireproof cloth is connected to the winding wheel, and the front and rear parts of the fireproof cloth are evenly spaced and connected to the mounting rods. The mounting rods on the lower right part are rotatably connected to the connecting rods, and the door cloth is connected between the connecting rods. The lower side of the fireproof cloth is connected to the counterweight, and the outer periphery of the fireproof cloth is slidably connected to the guide frame, which is fixed to the wall and the ground. The lower part of the sealing frame is slidably connected to the sealing plate, which is in contact with the counterweight, and multiple first springs are connected between the sealing plate and the sealing frame. The lower right part of the rear mounting rod is connected to the sealing frame, which is used to seal the door cloth and the fireproof cloth.

[0007] More preferably, a sealing mechanism is also included, which includes a first guide column, a sealing side plate, a second spring, a pressing member, a third spring, an extrusion member, a sealing bottom plate and a fourth spring. The left and right parts on the front and rear sides of the guide frame are connected with multiple first guide columns evenly spaced up and down, and the first guide columns on the same side are slidably connected with a sealing side plate, and the sealing side plate and the adjacent first guide columns are connected with a second spring. The left and right parts of the sealing plate are connected with a pressing member, and the pressing member will squeeze the adjacent sealing side plate to move toward the side close to the fireproof cloth when it moves downward, thereby sealing the fireproof cloth and the guide frame. There are two front and rear third springs connected between the pressing member and the guide frame, and two left and right extrusion members are connected to the front and rear sides of the sealing plate. The front and rear sides of the lower part of the guide frame are slidably connected with the sealing bottom plate, and the fourth spring is connected between the sealing bottom plate and the guide frame. The extrusion member will squeeze the adjacent sealing bottom plate to move toward the side close to the counterweight block when it moves downward, thereby sealing the counterweight block and the sealing plate.

[0008] More preferably, it also includes an obstacle cleaning mechanism, the obstacle cleaning mechanism includes a mounting post, a transmission belt, a mounting plate, a rotating post, a transmission gear set and a lower pressure frame, the front and rear sides of the lower part of the guide frame are rotatably connected to the front and rear mounting posts, a transmission belt is sleeved between the mounting posts, the front and rear sides of the lower part of the guide frame are symmetrically connected to the mounting plates, the upper sides of the mounting plates are rotatably connected to the rotating posts, the lower sides of the rotating posts and the adjacent mounting posts are connected to the transmission gear set, the front and rear sides of the counterweight block are symmetrically connected to the lower pressure frame, and the lower pressure frame is connected to the adjacent mounting plates by threads; when the counterweight block moves downward, it will also drive the lower pressure frame to move downward, and the downward movement of the lower pressure frame will drive the rotating post to rotate through the thread, and the rotation of the rotating post will drive the inner mounting post to rotate through the transmission gear set, thereby rotating the transmission belt.

[0009] More preferably, a locking mechanism is also included, which includes a first locking member, a torsion spring, a second guide column, a second locking member and a fifth spring. The left and right parts of the counterweight block are both symmetrically connected to the first locking member in a front-to-back rotational manner. The first locking member is clamped with the sealing plate. A torsion spring is connected between the first locking member and the counterweight block. Two left and right second guide columns are welded to the lower sides of the left and right parts of the counterweight block. The second locking member is slidably connected between the second guide columns. There are multiple fifth springs between the second locking member and the counterweight block, and the second locking member is clamped with the first locking member.

[0010] More preferably, a fixing mechanism is further included, which includes a locking plate and a universal tube. The right side of the connecting rod is rotatably connected to the locking plate, the locking plates are clamped with adjacent mounting rods, and the universal tube is rotatably connected between the locking plates.

[0011] More preferably, a supporting mechanism is also included, which includes a mounting frame and a rolling wheel. Two left and right mounting frames are welded to the lower rear side of the mounting shell, and the rolling wheels are rotatably connected between the mounting frames, and the rolling wheels are in contact with the fireproof cloth.

[0012] More preferably, bolt holes are provided on the mounting shell.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The present invention controls the operation of the servo motor to lower the fireproof cloth on the winding wheel onto the guide frame. Under the action of the counterweight block, the fireproof cloth can be ensured to fall, thereby achieving the effect of preventing the spread of smoke and fire. At the same time, the connecting rod and the door cloth can be controlled to rotate open, thereby enabling people to pass through, thereby effectively preventing the spread of smoke and fire while allowing people to pass through.

[0015] 2. In the present invention, when the sealing plate moves downward, it will drive the pressing part to move downward, and then squeeze the sealing side plate to move toward the side close to the fireproof cloth, thereby sealing the fireproof cloth and the guide frame. At the same time, the downward movement of the sealing plate will also drive the extruding part to move downward, and then squeeze the sealing bottom plate to move toward the side close to the counterweight block, thereby sealing the counterweight block and the sealing plate, thereby achieving sealing and ensuring the effect of preventing the spread of smoke and fire.

[0016] 3. When the counterweight block of the present invention moves downward, it will also drive the lower pressure frame to move downward. The downward movement of the lower pressure frame will drive the rotating column to rotate through the thread. The rotation of the rotating column will drive the inner mounting column to rotate through the transmission gear set, thereby causing the transmission belt to rotate. The rotation of the transmission belt will move the obstacles on the transmission belt to both sides, thereby clearing the obstacles, thereby effectively preventing the obstacles from getting stuck and hindering the counterweight block from moving downward, thereby affecting the use of the fireproof roller shutter.

[0017] 4. The downward movement of the counterweight block of the present invention will also drive the first locking piece to move downward and penetrate into the sealing plate. By controlling the first locking piece to rotate 90 degrees, the lower side of the first locking piece will be stuck in the sealing plate, thereby preventing the first locking piece and the counterweight block from moving upward. At the same time, under the action of the fifth spring, the second locking piece will be clamped and fixed with the first locking piece, thereby achieving a locking effect.

[0018] 5. When there is no need for access, the present invention can control one of the lock plates to rotate and engage with the installation rod. Under the action of the universal tube, it can synchronously drive the other lock plates to rotate and engage with the installation rod, thereby preventing the door cloth from rotating open. When it is necessary to control the door cloth to rotate open, the lock plate can be controlled to rotate and disengage from the installation rod.

[0019] 6. The rolling wheel of the present invention can contact with the fireproof cloth to provide guidance, and the rolling wheel can rotate to ensure that the fireproof cloth can be smoothly lowered and folded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a sectional view of the three-dimensional structure of the present invention.

[0022] Figure 3 It is a partial three-dimensional structural schematic diagram of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the fire prevention mechanism of the present invention.

[0024] Figure 5 It is a three-dimensional structural cross-sectional view of the fire protection mechanism of the present invention.

[0025] Figure 6 It is a partial three-dimensional structural cross-sectional view of the fire protection mechanism of the present invention.

[0026] Figure 7 This is a cross-sectional view of the first three-dimensional structure of the sealing mechanism of the present invention.

[0027] Figure 8 This is a cross-sectional view of the second three-dimensional structure of the sealing mechanism of the present invention.

[0028] Figure 9 It is a three-dimensional structural cross-sectional view of the obstacle clearing mechanism of the present invention.

[0029] Figure 10 This is an enlarged view of the three-dimensional structure of part A of the present invention.

[0030] Figure 11 It is a partial three-dimensional structural cross-sectional view of the obstacle clearing mechanism of the present invention.

[0031] Figure 12 It is a three-dimensional structural cross-sectional view of the locking mechanism of the present invention.

[0032] Figure 13 This is an enlarged view of the three-dimensional structure of part B of the present invention.

[0033] Figure 14 It is a partial three-dimensional structural diagram of the locking mechanism of the present invention.

[0034] Figure 15 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention.

[0035] Figure 16 It is a schematic diagram of the three-dimensional structure of the fixing mechanism of the present invention.

[0036] Figure 17 It is a schematic diagram of the three-dimensional structure of the support mechanism of the present invention.

[0037] The markings of the components in the accompanying drawings are as follows: 1. Mounting housing, 2. Servo motor, 3. Gear and chain assembly, 4. Reel, 5. Fire prevention mechanism, 51. Fireproof cloth, 52. Mounting rod, 53. Connecting rod, 54. Door cloth, 55. Counterweight, 56. Guide frame, 57. Closing plate, 58. First spring, 59. Sealing frame, 6. Sealing mechanism, 61. First guide column, 62. Sealing side plate, 63. Second spring, 64. Pressing piece, 65. Third spring, 66. Extrusion piece , 67, sealing bottom plate, 68, fourth spring, 7, obstacle clearing mechanism, 71, mounting column, 72, transmission belt, 73, mounting plate, 74, rotating column, 75, transmission gear set, 76, lower pressure frame, 8, locking mechanism, 81, first locking member, 82, torsion spring, 83, second guide column, 84, second locking member, 85, fifth spring, 9, fixing mechanism, 91, locking plate, 92, universal tube, 10, supporting mechanism, 101, mounting frame, 102, rolling wheel. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] A fireproof roller shutter with a pass-through function, such as Figures 1-6 As shown, it includes an installation shell 1, a servo motor 2, a gear and tooth chain group 3, a winding wheel 4 and a fire protection mechanism 5. Bolt holes are opened on the installation shell 1. The servo motor 2 is installed on the inner side of the left part of the installation shell 1. The winding wheel 4 is rotatably connected to the inside of the shell. The gear and tooth chain group 3 is connected between the winding wheel 4 and the output shaft of the servo motor 2. The winding wheel 4 is provided with a fire protection mechanism 5 for isolating fire and allowing people to pass through.

[0040] like Figures 1-6As shown, the fire prevention mechanism 5 includes a fireproof cloth 51, a mounting rod 52, a connecting rod 53, a door cloth 54, a counterweight 55, a guide frame 56, a sealing plate 57, a first spring 58 and a sealing frame 59. The fireproof cloth 51 is connected to the winding wheel 4, and the front and rear parts of the fireproof cloth 51 are evenly spaced and connected with the mounting rod 52. The mounting rod 52 at the lower right is rotatably connected with the connecting rod 53, and the door cloth 54 is connected between the connecting rods 53. The lower side of the fireproof cloth 51 is connected with the counterweight 55, and the outer periphery of the fireproof cloth 51 is slidably connected with the guide frame 56, which is fixed to the wall and the ground. The lower part of the sealing frame 59 is slidably connected with the sealing plate 57, which contacts the counterweight 55. Six first springs 58 are connected between the sealing plate 57 and the sealing frame 59. The lower right part of the rear mounting rod 52 is connected with the sealing frame 59, which is used to seal the door cloth 54 and the fireproof cloth 51.

[0041] When using this device, first fix the installation shell 1 to the top of the wall through the bolt holes, and then fix the guide frame 56 to the wall and the ground, and then install this device. In case of fire, the servo motor 2 can be controlled to operate, and the operation of the servo motor 2 will drive the winding wheel 4 to rotate through the gear chain group 3, and then the fireproof cloth 51 on the winding wheel 4 will be lowered on the guide frame 56. Under the action of the counterweight block 55, the fireproof cloth 51 can be ensured to fall. When the counterweight block 55 moves downward to contact with the sealing plate 57, the sealing plate 57 is squeezed to move downward, and the first spring 58 is compressed. After that, the servo motor 2 can be turned off, thereby achieving the effect of preventing the spread of smoke and fire. At the same time, when it is necessary to pass through, the connecting rod 53 is controlled to rotate, so that the door cloth 54 rotates open, thereby enabling people to pass through. After the people pass through, the connecting rod 53 is controlled to rotate in the opposite direction, so that the door cloth 54 rotates closed, and under the action of the sealing frame 59, smoke is blocked, thereby effectively preventing the spread of smoke and fire while allowing people to pass through. After the fire is extinguished, the servo motor 2 is controlled to operate in the reverse direction, and then the gear chain group 3 drives the winding wheel 4 to rotate to retract the fireproof cloth 51.

[0042] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 8As shown, a sealing mechanism 6 is also included, which includes a first guide column 61, a sealing side plate 62, a second spring 63, a pressing member 64, a third spring 65, an extrusion member 66, a sealing bottom plate 67 and a fourth spring 68. The left and right parts of the front and rear sides of the guide frame 56 are connected with five first guide columns 61 at evenly spaced intervals above and below. The first guide columns 61 on the same side are slidably connected with the sealing side plates 62, and the sealing side plates 62 and the adjacent first guide columns 61 are connected with the second spring 63. The left and right parts of the sealing plate 57 are connected with a pressing member 64, and the pressing member 64 and the guide frame 56 are connected with two front and rear third springs 65. The front and rear sides of the sealing plate 57 are connected with two left and right extrusion members 66. The front and rear sides of the lower part of the guide frame 56 are slidably connected with the sealing bottom plate 67, and the fourth spring 68 is connected between the sealing bottom plate 67 and the guide frame 56.

[0043] When the fireproof cloth 51 is lowered, the counterweight block 55 will squeeze the sealing plate 57 to move downward, and at this time it will drive the clamping piece 64 to move downward. The third spring 65 is compressed, and the clamping piece 64 moves downward, which will squeeze the sealing side plate 62 to move toward the side close to the fireproof cloth 51, thereby sealing the fireproof cloth 51 and the guide frame 56. At the same time, the downward movement of the sealing plate 57 will also drive the extrusion piece 66 to move downward, and then squeeze the sealing bottom plate 67 to move toward the side close to the counterweight block 55, thereby sealing the counterweight block 55 and the sealing plate 57, so that sealing can be achieved, ensuring the effect of preventing the spread of smoke and fire.

[0044] like Figure 1 、 Figure 2 、 Figure 9 、 Figure 10 and Figure 11 As shown, it also includes an obstacle cleaning mechanism 7, which includes a mounting post 71, a transmission belt 72, a mounting plate 73, a rotating post 74, a transmission gear set 75 and a lower pressure frame 76. The front and rear sides of the lower part of the guide frame 56 are rotatably connected to the front and rear mounting posts 71, and a transmission belt 72 is sleeved between the mounting posts 71. The front and rear sides of the lower part of the guide frame 56 are symmetrically connected to the mounting plates 73, and the upper side of the mounting plate 73 is rotatably connected to the rotating post 74. The lower side of the rotating post 74 and the adjacent mounting post 71 are connected with a transmission gear set 75. The front and rear sides of the counterweight block 55 are symmetrically connected to the lower pressure frame 76, and the lower pressure frame 76 is connected to the adjacent mounting plate 73 by threads.

[0045] When the counterweight block 55 moves downward, it will also drive the lower pressure frame 76 to move downward. The downward movement of the lower pressure frame 76 will drive the rotating column 74 to rotate through the thread. The rotation of the rotating column 74 will drive the inner mounting column 71 to rotate through the transmission gear set 75, thereby causing the transmission belt 72 to rotate. The rotation of the transmission belt 72 will move the obstacles on the transmission belt 72 to both sides, thereby clearing the obstacles, thereby effectively preventing the obstacles from getting stuck and hindering the downward movement of the counterweight block 55, thereby affecting the use of the fireproof roller shutter.

[0046] like Figure 1 、 Figure 2 、 Figure 12 、 Figure 13 and Figure 14 As shown, it also includes a locking mechanism 8, which includes a first locking member 81, a torsion spring 82, a second guide column 83, a second locking member 84 and a fifth spring 85. The left and right parts of the counterweight 55 are both symmetrically connected to the first locking member 81 in a front-to-back rotational manner. The first locking member 81 is clamped with the sealing plate 57. A torsion spring 82 is connected between the first locking member 81 and the counterweight 55. Two second guide columns 83 are welded to the left and right lower sides of the left and right parts of the counterweight 55. The second guide columns 83 are slidably connected to the second locking member 84. There are four fifth springs 85 between the second locking member 84 and the counterweight 55. The second locking member 84 is clamped with the first locking member 81.

[0047] Initially, the fifth spring 85 is in a compressed state, and the downward movement of the counterweight 55 will also drive the first locking piece 81 to move downward. When the counterweight 55 moves downward to contact the sealing plate 57, the first locking piece 81 will penetrate into the sealing plate 57. Then people can control the first locking piece 81 to rotate 90 degrees, and the lower side of the first locking piece 81 will be stuck in the sealing plate 57, thereby preventing the first locking piece 81 and the counterweight 55 from moving upward, and the torsion spring 82 is deformed. Then, under the action of the fifth spring 85, the second locking piece 84 will be clamped and fixed with the first locking piece 81, thereby achieving a locking effect. When the fireproof cloth 51 needs to be retracted, the second locking piece 84 is controlled to move upward and disengage from the first locking piece 81. The fifth spring 85 is compressed. Then, under the action of the torsion spring 82, the first locking piece 81 will rotate in the opposite direction and reset, thereby disengaging the first locking piece 81 from the sealing plate 57. Then, the fireproof cloth 51 can be controlled to be retracted.

[0048] like Figure 2 、 Figure 3 、 Figure 15 and Figure 16 As shown, it also includes a fixing mechanism 9, which includes a locking plate 91 and a universal tube 92. The right side of the connecting rod 53 is rotatably connected to the locking plate 91, and the locking plates 91 are clamped with the adjacent mounting rods 52. The universal tube 92 is rotatably connected between the locking plates 91.

[0049] When there is no need for access, one of the lock plates 91 can be controlled to rotate and engage with the mounting rod 52. Under the action of the universal tube 92, the other lock plates 91 can be synchronously driven to rotate and engage with the mounting rod 52, thereby preventing the door cloth 54 from rotating open. When it is necessary to control the door cloth 54 to rotate open, one of the lock plates 91 is controlled to rotate and disengage from the mounting rod 52. Under the action of the universal tube 92, the other lock plates 91 can be synchronously driven to rotate and disengage from the mounting rod 52, and then the door cloth 54 can be controlled to rotate open.

[0050] like Figure 3 and Figure 17 As shown, it also includes a support mechanism 10, which includes a mounting frame 101 and a rolling wheel 102. Two left and right mounting frames 101 are welded to the lower rear side of the mounting shell 1, and the rolling wheel 102 is rotatably connected between the mounting frames 101, and the rolling wheel 102 is in contact with the fireproof cloth 51.

[0051] The rolling wheel 102 can contact with the fireproof cloth 51 so as to provide guidance, and the rolling wheel 102 can rotate so as to ensure that the fireproof cloth 51 is smoothly dropped down and put away.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fire-resistant roller shutter with a manhole cover, characterized in that: The invention comprises a mounting housing (1), a servo motor (2), a gear tooth chain group (3), a reel (4) and a fire prevention mechanism (5); the servo motor (2) is mounted on the inner side of the left portion of the mounting housing (1); the reel (4) is rotatably connected to the interior of the housing; the gear tooth chain group (3) is connected between the reel (4) and the output shaft of the servo motor (2); and the reel (4) is provided with a fire prevention mechanism (5) for isolating fire and providing access to personnel; The fire prevention mechanism (5) includes a fireproof cloth (51), a mounting rod (52), a connecting rod (53), a door cloth (54), a counterweight (55), a guide frame (56), a sealing plate (57), a first spring (58) and a sealing frame (59). The fireproof cloth (51) is connected to the reel (4). The front and rear parts of the fireproof cloth (51) are evenly spaced and connected to the mounting rod (52). The mounting rod (52) at the lower right part is rotatably connected to the connecting rod (53). The door cloth (54) is connected between the connecting rods (53). The fireproof cloth ( 51) is connected to the lower side of the counterweight (55), the outer periphery of the fireproof cloth (51) is slidably connected to the guide frame (56), the guide frame (56) is fixed to the wall and the ground, the lower part of the sealing frame (59) is slidably connected to the sealing plate (57), the sealing plate (57) is in contact with the counterweight (55), and a plurality of first springs (58) are connected between the sealing plate (57) and the sealing frame (59), and the lower right part of the rear mounting rod (52) is connected to the sealing frame (59), and the sealing frame (59) is used to seal the door cloth (54) and the fireproof cloth (51); The sealing mechanism (6) further comprises a first guide post (61), a sealing side plate (62), a second spring (63), a pressing member (64), a third spring (65), an extrusion member (66), a sealing bottom plate (67) and a fourth spring (68). The left and right parts of the front and rear sides of the guide frame (56) are connected with a plurality of first guide posts (61) at even intervals in the upper and lower directions. The first guide posts (61) on the same side are slidably connected with the sealing side plates (62). The sealing side plates (62) and the adjacent first guide posts (61) are connected with second springs (63). The left and right parts of the sealing plate (57) are connected with pressing members (64). The pressing members (64) move downward. The adjacent sealing side plate (62) will be squeezed to move toward the side close to the fireproof cloth (51), thereby sealing the fireproof cloth (51) and the guide frame (56). Two third springs (65) are connected between the pressing member (64) and the guide frame (56). The front and rear sides of the sealing plate (57) are connected to two left and right squeezing members (66). The front and rear sides of the lower part of the guide frame (56) are slidably connected to the sealing bottom plate (67). The sealing bottom plate (67) and the guide frame (56) are connected to the fourth spring (68). The downward movement of the squeezing member (66) will squeeze the adjacent sealing bottom plate (67) to move toward the side close to the counterweight block (55), thereby sealing the counterweight block (55) and the sealing plate (57).

2. A fire-resistant roller shutter according to claim 1, characterized in that: The obstacle clearing mechanism (7) is also included. The obstacle clearing mechanism (7) includes a mounting column (71), a transmission belt (72), a mounting plate (73), a rotating column (74), a transmission gear set (75) and a lower pressure frame (76). The front and rear sides of the lower portion of the guide frame (56) are both rotatably connected to the front and rear mounting columns (71). The transmission belt (72) is sleeved between the mounting columns (71). The front and rear sides of the lower portion of the guide frame (56) are both symmetrically connected to the mounting plate (73). The upper side of the mounting plate (73) is both rotatably connected to the rotating column (74). The rotating column (74) A transmission gear set (75) is connected between the lower side and the adjacent mounting column (71), and the front and rear sides of the counterweight (55) are symmetrically connected to the lower pressure frame (76), and the lower pressure frame (76) is connected to the adjacent mounting plate (73) through a thread. When the counterweight (55) moves downward, it also drives the lower pressure frame (76) to move downward. When the lower pressure frame (76) moves downward, it drives the rotating column (74) to rotate through the thread. When the rotating column (74) rotates, it drives the inner mounting column (71) to rotate through the transmission gear set (75), thereby rotating the transmission belt (72).

3. A fireproof rolling shutter with access according to claim 2, characterized in that: The invention also includes a locking mechanism (8), which includes a first locking member (81), a torsion spring (82), a second guide column (83), a second locking member (84) and a fifth spring (85). The left and right parts of the counterweight (55) are both symmetrically connected to the first locking member (81) in a rotational manner. The first locking member (81) is engaged with the sealing plate (57). A torsion spring (82) is connected between the first locking member (81) and the counterweight (55). The lower sides of the left and right parts of the counterweight (55) are both welded with two left and right second guide columns (83). The second guide columns (83) are both slidably connected to the second locking member (84). There are multiple fifth springs (85) between the second locking member (84) and the counterweight (55). The second locking member (84) is engaged with the first locking member (81).

4. A fire-resistant rolling shutter with access according to claim 3, characterized in that: The fixing mechanism (9) further comprises a locking plate (91) and a universal tube (92). The right side of the connecting rod (53) is rotatably connected to the locking plate (91). The locking plates (91) are all engaged with adjacent mounting rods (52). The universal tube (92) is rotatably connected between the locking plates (91).

5. A fire-resistant rolling shutter with access to people according to claim 4, characterized in that: The invention also includes a support mechanism (10), the support mechanism (10) including a mounting frame (101) and a rolling wheel (102), two left and right mounting frames (101) are welded to the lower side of the rear portion of the mounting housing (1), and the rolling wheel (102) is rotatably connected between the mounting frames (101), and the rolling wheel (102) is in contact with the fireproof cloth (51).

6. A fire-resistant rolling shutter with access according to claim 5, characterized in that: The mounting housing (1) is provided with bolt holes.

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