Fire-fighting smoke exhaust air pipe convenient to assemble

Abstract

The utility model discloses a fire-fighting smoke exhaust duct convenient to assemble, which comprises a first smoke exhaust duct and a second smoke exhaust duct, one side of the first smoke exhaust duct is connected with a first connecting frame, and the two sides of the upper and lower borders of the first connecting frame are respectively provided with a first locking hole and a locking component; the side, close to the first connecting frame, of the second smoke exhaust air pipe is connected with a second connecting frame. The two sides, corresponding to the first locking hole and the locking assembly, of the upper frame and the lower frame of the second connecting frame are provided with a locking assembly and a second locking hole correspondingly. The tail end of the locking assembly on the first connecting frame and the tail end of the locking assembly on the second connecting frame are arranged outside the second locking hole and the first locking hole in a penetrating mode respectively, fixing pieces are arranged at the tail ends of the locking assemblies, and the inner walls of the fixing pieces are attached to the outer walls of the connecting frames. A large number of screws are not needed, the process is simple and convenient, the assembling efficiency is high, and certain labor cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire smoke exhaust ducts, in particular to a fire smoke exhaust duct which is easy to assemble. Background Art

[0002] During modern building construction, fire smoke exhaust ducts are essential firefighting equipment. By promptly discharging smoke, they buy valuable time for people to escape from fires. Furthermore, blowers draw outside air into smoke ducts, which provide ventilation or maintain positive pressure, ensuring that smoke from inside rooms does not enter evacuation routes like antechambers and stairwells.

[0003] Since the smoke exhaust duct is long, in order to facilitate installation, the smoke exhaust duct is usually divided into multiple pipe sections, which are then spliced ​​together. However, in the prior art, the smoke exhaust duct is generally composed of multiple pipe sections connected by flanges, and a large number of screws are required during the connection process, resulting in low assembly efficiency and inconvenience in assembly. Utility Model Content

[0004] The purpose of the present invention is to provide a fire smoke exhaust duct that is easy to assemble, so as to solve the technical problem raised in the above background technology that the existing smoke exhaust duct is generally composed of multiple pipe sections connected by flanges during the installation process, and a large number of screws are needed during the connection process, resulting in low assembly efficiency and inconvenience in assembly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fire smoke exhaust duct that is easy to assemble, comprising a first smoke exhaust duct and a second smoke exhaust duct; a first connecting frame is connected to one side of the first smoke exhaust duct, and first locking holes and locking components are respectively provided on both sides of the upper and lower frames of the first connecting frame; the second smoke exhaust duct is connected to a second connecting frame on one side close to the first connecting frame, and locking components and second locking holes are respectively provided on both sides of the upper and lower frames of the second connecting frame corresponding to the first locking holes and the locking components; the ends of the locking components on the first connecting frame and the second connecting frame are respectively passed through the outside of the second locking holes and the first locking holes, and a fixing piece is provided on the end of the locking component, and the inner wall of the fixing piece is arranged to fit the outer wall of the connecting frame.

[0007] In an optional embodiment, the locking assembly includes a locking rod, which is horizontally inserted into the connecting frame and the inner end extends outward by a preset length, and the upper inner end of the locking rod is recessed with a card interface that is compatible with the fixing member; an extrusion ring is sleeved on the locking rod, and one side of the extrusion ring abuts against the inner wall of one side of the connecting frame, and a first telescopic spring is sleeved on the locking rod between the other side of the extrusion ring and the inner wall of the other side of the connecting frame, and the outer end of the locking rod is connected to a limiting plate.

[0008] In an optional embodiment, the fixing member is a clamping block, one end of which is rotatably connected to the outer wall of the connecting frame, and the other end is clamped into the card interface and movably connected to the locking rod.

[0009] In an optional embodiment, the front and rear frames of the first connecting frame are respectively provided with guide grooves on the side walls corresponding to the second connecting frame, and the outer walls of the front and rear frames of the first connecting frame are provided with limiting openings that pass through the guide grooves at positions corresponding to the guide grooves; the front and rear frames of the second connecting frame are connected to the side walls close to the first connecting frame with guide blocks that are adapted to the guide grooves, and the guide blocks are connected to a retractable limiting component that is adapted to the limiting openings.

[0010] In an optional embodiment, a mounting groove is recessed on the guide block, and the limit assembly is arranged in the mounting groove. The limit assembly includes a fixed cylinder, the rear end of the fixed cylinder is connected to the inner wall of the mounting groove, and a T-shaped connecting rod is passed through the front end of the fixed cylinder. A second telescopic spring is arranged in the fixed cylinder, one end of the second telescopic spring abuts against the inner end of the connecting rod, and the other end abuts against the inner bottom wall of the fixed cylinder, and the outer end of the connecting rod is connected to a wedge-shaped limit block, and the surrounding walls of the limit block are arranged to fit the surrounding walls of the mounting groove.

[0011] In an optional embodiment, rubber pads are attached to inner walls on both sides of the card interface.

[0012] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0013] The utility model provides a first locking hole, a second locking hole and a locking assembly on the first connecting frame and the second connecting frame respectively. The locking assembly on the first connecting frame is fixed to the second locking hole of the second connecting frame, and the locking assembly on the second connecting frame is fixed to the first locking hole on the first connecting frame. Under the action of the fixing member, the locking assembly respectively makes the first connecting frame and the second connecting frame move closer and be fixed in the direction where they are located respectively, and the fixing effect is good. During assembly, the locking assembly can be directly fixed by the fixing member without using a large number of screws. The process is relatively simple, the assembly efficiency is high, and a certain amount of labor cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the fire smoke exhaust duct during assembly, which is easy to assemble according to the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the fire smoke exhaust duct of the utility model when it is disassembled;

[0016] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the middle edge BB;

[0018] Figure 5 for Figure 1 A schematic diagram of a cross-sectional top view of the first connecting frame and the second connecting frame along AA;

[0019] Figure 6 This is a schematic structural diagram of the guide block and guide groove when they are separated in this embodiment;

[0020] Wherein, the accompanying drawings are marked as follows:

[0021] 1. First smoke exhaust duct; 2. First connecting frame; 3. Second smoke exhaust duct; 4. Second connecting frame; 5. Limit plate; 6. Locking rod; 61. Extrusion collar; 62. First telescopic spring; 7. Card interface; 8. First locking hole; 81. Second locking hole; 9. Card connection block; 10. Limit opening; 11. Guide groove; 12. Guide block; 13. Limit block; 14. Mounting groove; 15. Fixing tube; 16. Second telescopic spring; 17. Connecting rod. DETAILED DESCRIPTION

[0022] In order to help those skilled in the art better understand the present invention, 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 those skilled in the art without creative work are within the scope of protection of this application.

[0023] The following combination Figures 1 to 6 , describing the embodiments of the present utility model.

[0024] The present embodiment discloses a fire smoke exhaust duct that is easy to assemble, including a first smoke exhaust duct 1 and a second smoke exhaust duct 3; a first connecting frame 2 is connected to one side of the first smoke exhaust duct 1, and a first locking hole 8 and a locking assembly are respectively provided on both sides of the upper and lower frames of the first connecting frame 2; the second smoke exhaust duct 3 is connected to a second connecting frame 4 on the side close to the first connecting frame 2, and a locking assembly and a second locking hole 81 are respectively provided on both sides of the upper and lower frames of the second connecting frame 4 corresponding to the first locking hole 8 and the locking assembly; the ends of the locking assembly on the first connecting frame 2 and the locking assembly on the second connecting frame 4 are respectively passed through the outside of the second locking hole 81 and the first locking hole 8, and a fixing part is provided on the end of the locking assembly, and the inner wall of the fixing part is arranged to fit the outer wall of the connecting frame.

[0025] In the above embodiment, the utility model provides the first locking hole 8, the second locking hole 81 and the locking assembly on the first connecting frame 2 and the second connecting frame 4 respectively. The locking assembly on the first connecting frame 2 is fixed to the second locking hole 81 of the second connecting frame 4, and the locking assembly on the second connecting frame 4 is fixed to the first locking hole 8 on the first connecting frame 2. Under the action of the fixing member, the locking assembly respectively makes the first connecting frame 2 and the second connecting frame 4 move closer and be fixed in the direction where they are located. The fixing effect is good. During assembly, the locking assembly can be directly fixed by the fixing member without using a large number of screws. The process is relatively simple, the assembly efficiency is high, and a certain amount of labor cost is saved.

[0026] In the above embodiment, the size of the first connecting frame 2 is the same as that of the second connecting frame 4. A first locking hole 8 and a locking assembly are respectively provided on both sides of the upper and lower frames of the first connecting frame 2, and a locking assembly and a second locking hole 81 are respectively provided at corresponding positions on the second connecting frame 4. The first locking hole 8 can be adapted to the locking assembly on the second connecting frame 4, and the second locking hole 81 can be adapted to the locking assembly on the first connecting frame 2. Therefore, when assembly is required, by aligning the locking assembly on the first connecting frame 2 with the second locking hole 81 and the locking assembly on the second connecting frame 4 with the first locking hole 8, they can be locked and fixed to each other under the action of the fixing member.

[0027] In an optional embodiment, the locking assembly includes a locking rod 6, which is horizontally inserted into the connecting frame and the inner end extends outward by a preset length. The upper inner end of the locking rod 6 is recessed with a card interface 7 that is compatible with the fixing member; an extrusion ring 61 is sleeved on the locking rod 6, and one side of the extrusion ring 61 abuts against the inner wall of one side of the connecting frame. A first telescopic spring 62 is sleeved on the locking rod 6 between the other side of the extrusion ring 61 and the inner wall of the other side of the connecting frame, and the outer end of the locking rod 6 is connected to a limiting plate 5.

[0028] When the locking rod 6 is pushed inward, the first retractable spring 62 is provided on the locking rod 6 and the first retractable spring 62 is provided on the locking rod 6. When the locking rod 6 is pushed inward, the first retractable spring 62 is provided on the locking rod 6 and the first retractable spring 62 is provided on the locking rod 6. When the locking rod 6 is pushed inward, the first retractable spring 62 is squeezed to the bottom by the first retractable spring 62.

[0029] Furthermore, the fixing member is a clamping block 9, one end of which is rotatably connected to the outer wall of the connecting frame, and the other end is clamped into the clamping interface 7 and movably connected to the locking rod 6. The thickness of the clamping block 9 is slightly smaller than the diameter of the opening of the clamping interface 7. By rotating the clamping block 9 to a horizontal position, the clamping block 9 is clamped onto the clamping interface 7, thereby tightening the locking rod 6. In order to further improve the tightening effect, rubber pads can be attached to the inner walls of both sides of the clamping interface 7. The clamping block 9 is clamped into the clamping interface 7, and the locking rod 6 can be further squeezed outward to fine-tune the possible spacing between the two connecting frames, so that the two connecting frames are more tightly connected.

[0030] In other embodiments, in order to improve the sealing between the first connecting frame 2 and the second connecting frame 4, rubber pads may be attached to the opposite sides of the first connecting frame 2 or the second connecting frame 4. When the first connecting frame 2 and the second connecting frame 4 are assembled together, the rubber pads can seal any gaps that may exist during the assembly, resulting in a better sealing effect.

[0031] In the above embodiment, during assembly, the inner ends of the locking rods 6 exposed on the first connecting frame 2 and the second connecting frame 4 are aligned with the second locking hole 81 and the first locking hole 8 and then inserted for positioning. Then the limit plate 5 is pushed inward, and the part exposed on the outside of the connecting frame will be pushed inward until the limit plate 5 is pushed to fit the outer wall of the connecting frame. At this time, the card interface 7 at the inner end of the locking rod 6 will just pass through the locking hole on the opposite side and be exposed to the outside. Then the card block 9 is rotated toward the card interface 7 until the card block 9 is stuck in the card interface 7. The remaining three locking rods are fixed in the corresponding locking holes according to the same operation to connect the two sections of pipes together. The connection of the remaining sections of pipes is also carried out according to this operation. After multiple sections of pipes are operated in this way, a smoke exhaust duct can be formed.

[0032] In an optional embodiment, the front and rear frames of the first connecting frame 2 are respectively provided with guide grooves 11 on the side walls corresponding to the second connecting frame 4, and the outer walls of the front and rear frames of the first connecting frame 2 are provided with limit openings 10 that are connected to the guide grooves 11 at positions corresponding to the guide grooves 11; the front and rear frames of the second connecting frame 4 are connected to the side walls near the first connecting frame 2, and are adapted to the guide grooves 11, and the guide blocks 12 are connected to a retractable limit assembly that is adapted to the limit opening 10. The width of the guide block 12 is consistent with the width of the guide groove 11, that is, when the guide block 12 is fully inserted into the guide groove 11, the outer walls of the two connecting frames will fit tightly together, and when the guide block 12 moves into the guide groove 11, the limit assembly will be squeezed so that the limit assembly shrinks into the guide block 12, and then when the limit assembly is aligned with the limit opening 10, it will pop out and snap into the limit opening 10 to perform a fixed position.

[0033] Furthermore, the guide block 12 is recessed with a mounting groove 14, and the limit assembly is arranged in the mounting groove 14. The limit assembly includes a fixed cylinder 15, the rear end of the fixed cylinder 15 is connected to the inner wall of the mounting groove 14, and the front end of the fixed cylinder 15 is penetrated by a T-shaped connecting rod 17. A second telescopic spring 16 is arranged in the fixed cylinder 15, one end of the second telescopic spring 16 abuts against the connecting rod 17, and the other end abuts against the inner bottom wall of the fixed cylinder 15. The outer end of the connecting rod 17 is connected to a wedge-shaped limit block 13, and the surrounding walls of the limit block 13 are fitted with the surrounding walls of the mounting groove 14. During the process of the guide block 12 moving into the guide groove 11, the front inner wall of the guide groove 11 will squeeze the limit block 13, and the connecting rod 17 will squeeze the second telescopic spring 16, so that the limit block 13 will retract into the installation groove 14. When the guide block 12 is completely moved into the guide groove 11, the limit block 13 will also be exactly aligned with the limit opening 10. Under the action of the second telescopic spring 16, the connecting rod 17 will tend to withdraw, so that the limit block 13 is stuck in the limit opening 10.

[0034] In the above embodiment, through the action of the guide groove 11, the limiting opening 10, the guide block 12 and the limiting block 13, the guide block 12 clamps the limiting block 13 into the limiting opening 10 along the guide groove 11, and further locks and fixes the front and rear sides of the first connecting frame 2 and the second connecting frame 4, so that the four sides of the first connecting frame 2 and the second connecting frame 4 are fastened together, thereby improving the fastening effect, simplifying the operation and facilitating assembly.

[0035] In the above embodiment, after aligning the guide block with the guide groove, push it toward the inner end of the guide groove. After pushing it to the bottom, the limit block will be stuck in the limit opening, and the front and rear frames of the first connecting frame and the second connecting frame can be fixed together. When disassembly is required, use an external tool to insert the limit opening and squeeze the limit block into the installation groove to disengage from the limit opening. When the guide block is aligned with the guide groove and inserted into the guide groove, the locking rod on the first connecting frame and the card interface part of the inner end of the locking rod on the second connecting frame are also inserted into the second locking hole and the first locking hole respectively. Then push the limit plate to push the locking rod inward until the card interface passes through the locking hole and is exposed to the outside, and then rotate the card block to lock it into the card interface.

[0036] Although the present invention has been described using the above preferred embodiments, they are not intended to limit the scope of protection of the present invention. Any person skilled in the art may make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention, and the changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A fire smoke exhaust duct that is easy to assemble, characterized in that: include: A first smoke exhaust duct, wherein one side of the first smoke exhaust duct is connected to a first connecting frame, and both sides of the upper and lower frames of the first connecting frame are respectively provided with a first locking hole and a locking assembly; A second smoke exhaust duct, wherein the second smoke exhaust duct is connected to a second connecting frame on one side close to the first connecting frame, and a locking assembly and a second locking hole are respectively provided on both sides of the upper and lower frames of the second connecting frame corresponding to the first locking hole and the locking assembly; The ends of the locking assembly on the first connecting frame and the locking assembly on the second connecting frame are respectively passed through the outside of the second locking hole and the first locking hole, and a fixing piece is provided on the end of the locking assembly, and the inner wall of the fixing piece is arranged to fit the outer wall of the connecting frame.

2. The fire smoke exhaust duct that is easy to assemble according to claim 1 is characterized in that: The locking assembly includes a locking rod, which is horizontally arranged on the connecting frame and has an inner end extending outward by a preset length. The upper portion of the inner end of the locking rod is recessed with a card interface adapted to the fixing member; The locking rod is sleeved with an extrusion collar, one side of the extrusion collar abuts against the inner wall of one side of the connecting frame, and the locking rod is sleeved with a first telescopic spring between the other side of the extrusion collar and the inner wall of the other side of the connecting frame. The outer end of the locking rod is connected to a limiting plate.

3. The fire smoke exhaust duct that is easy to assemble according to claim 2 is characterized in that: The fixing member is a clamping block, one end of which is rotatably connected to the outer wall of the connecting frame, and the other end of which is clamped into the clamping interface and movably connected to the locking rod.

4. The fire smoke exhaust duct that is easy to assemble according to claim 1 is characterized in that: The front and rear frames of the first connecting frame are respectively provided with guide grooves on the side walls corresponding to the second connecting frame, and the outer side walls of the front and rear frames of the first connecting frame are provided with limiting openings that penetrate the guide grooves at positions corresponding to the guide grooves; The front and rear frames of the second connecting frame are connected to the side walls close to the first connecting frame with guide blocks adapted to the guide grooves. The guide blocks are connected to a retractable limiting assembly adapted to the limiting opening.

5. The fire smoke exhaust duct that is easy to assemble according to claim 4 is characterized in that: The guide block is recessed with a mounting groove, and the limit assembly is arranged in the mounting groove. The limit assembly includes a fixed cylinder, the rear end of the fixed cylinder is connected to the inner wall of the mounting groove, and the front end of the fixed cylinder is penetrated by a T-shaped connecting rod. A second telescopic spring is arranged in the fixed cylinder, one end of the second telescopic spring abuts the inner end of the connecting rod, and the other end abuts the inner bottom wall of the fixed cylinder. The outer end of the connecting rod is connected to a wedge-shaped limit block, and the surrounding walls of the limit block are fitted with the surrounding walls of the mounting groove.

6. The fire smoke exhaust duct that is easy to assemble according to claim 2 is characterized in that: Rubber pads are attached to the inner walls of both sides of the card interface.

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