A flue gas duct system that distributes the weight of the flue gas duct on the building

Abstract

The present invention discloses a flue gas duct system that distributes the weight of the flue gas duct on a building, including a building composed of a frame and a floor slab, a flue gas duct installation hole is provided on the floor slab, a flue gas duct butted up and down is provided in the flue gas duct installation hole, a hooking piece locked on the outer wall of the flue gas duct is provided on the flue gas duct, a stretching rod is provided between the hooking piece and the building, and the hooking piece is located in the flue gas duct installation hole or the floor slab. The present invention distributes the weight of the flue gas duct on the building through the hooking piece, so as to prevent the exhaust gas pipe located at the relatively lower layer from being crushed, and no butting gap will appear at the upper and lower butting parts of the flue gas duct, which is convenient for grouting and sealing in the later stage, and the hooking piece is located in the floor slab, and after grouting and sealing in the later stage, the hooking piece and its stretching rod form a whole with the building, which increases the density, prevents the phenomenon of smoke and odor, and effectively prevents water leakage at the butt joint of the exhaust gas pipe.

Description

Technical Field

[0001] The invention relates to a smoke duct system commonly used in buildings and distributing the weight of the smoke duct on the building body. Background Art

[0002] The smoke exhaust ducts used in existing buildings are generally square tubular structures. The smoke exhaust ducts of this structure are generally consistent with the height of the floors, and the height is generally above 2.7 meters. The direct connection parts of the upper and lower smoke exhaust ducts are generally located in the plane where the floor is located. Since each section of the smoke exhaust duct has a certain weight, the existing buildings are generally more than ten or dozens of floors. After the smoke exhaust ducts of all floors are connected together, the smoke exhaust ducts located at the relatively bottom will be collapsed. Therefore, every 3-4 floors, the bottom of the smoke exhaust duct on the relatively upper floor is generally set on the top of the floor where the smoke duct installation hole is installed. The supporting parts on the plate prevent the exhaust gas duct located at the relatively bottom layer from collapsing. The supporting parts are generally made of angle steel or channel steel. This installation method has the following disadvantages: due to the presence of supporting parts at the direct connection parts of the upper and lower exhaust gas ducts, there is a gap at the connection parts of the upper and lower exhaust gas ducts, which is prone to leakage, exposure of grout, and poor sealing during the later grouting process; at the same time, since the supporting parts are metal parts, they have different thermal shrinkage coefficients from the exhaust gas ducts, causing cracks in the cement grouting seal at the connection parts of the exhaust gas ducts, which is prone to smoke and odor cross-talk, and can easily cause water leakage at the connection parts of the exhaust gas ducts in the later stage. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a flue gas duct system with good sealing performance and high construction efficiency and capable of distributing the weight of the flue gas duct on a building.

[0004] In order to solve the above technical problems, the present invention includes a building composed of a frame and a floor slab, and a flue gas duct mounting hole is provided on the floor slab. A flue gas duct connected up and down is provided in the flue gas duct mounting hole. Its structural feature is that a hooking piece locked on the outer wall of the flue gas duct is provided on the flue gas duct, a stretching rod is provided between the hooking piece and the building body, and the hooking piece is located in the flue gas duct mounting hole or the floor slab.

[0005] The upper and lower butt joints of the flue gas duct are located in the flue gas duct installation hole or in the floor slab.

[0006] The hooking piece is arranged on the top of the outer wall of the flue gas duct at a relatively lower layer, or the hooking piece is arranged on the bottom of the outer wall of the flue gas duct at a relatively upper layer.

[0007] The hooking piece includes an angular fixing piece, a connecting plate is hinged on the relative outer side surface of the angular fixing piece, and the upper end of the connecting plate is hinged with an angular locking piece corresponding to the upper and lower parts of the angular fixing piece; the angular fixing piece is locked on the outer wall of the flue gas duct by a clamp, and a pulling mechanism is provided between the side of the connecting plate relative to the lower end away from the angular fixing piece and the lower end of the stretching rod.

[0008] A notch for installing a clamp is provided approximately in the middle of the outer corner of the angle fixing piece.

[0009] The inner side surfaces of the angle fixing piece and the angle locking piece are rough surfaces.

[0010] The top of the angle locking piece is provided with an inwardly curved edge; the top of the angle fixing piece is provided with an inwardly curved edge.

[0011] The inward extension distance of the curved edge gradually decreases from the intersection of the two inner wall surfaces outwards.

[0012] The hooking piece includes an angular fixing piece, which is vertically arranged up and down relative to the inner side surface of the upper end section, and the inner side surface of the angular fixing piece relative to the lower end section is inclined at a certain angle toward the outer side surface relative to the inner side surface of the upper end. The angular fixing piece is locked to the outer wall of the flue gas duct relative to the upper end section through a clamp, and a mutually connected pulling mechanism is provided between the lower end section of the angular fixing piece and the lower end of the stretching rod.

[0013] A notch for installing a clamp is provided at a substantially middle portion of the outer corner of the upper end section of the angle fixing piece.

[0014] The angle fixing piece relative lower end section extends outward relative to the angle fixing piece relative upper end section, and a clamp threading seam extending into the angle fixing piece relative upper end section is provided on both sides along the width direction of the angle fixing piece relative lower end section.

[0015] The upper end of the stretching rod is provided with a locking piece which can be adjusted up and down along the stretching rod.

[0016] After adopting the above structure, since a hooking piece locked on the outer wall of the smoke duct is provided in the smoke duct installation hole, a stretching rod is provided between the hooking piece and the building body, the weight of the smoke duct is distributed on the building body through the hooking piece to prevent the smoke exhaust duct located on the relatively lower layer from being crushed, and no docking gap will appear at the upper and lower docking parts of the smoke duct, which is convenient for subsequent grouting and sealing. The hooking piece is located in the floor slab. After the subsequent grouting and sealing, the hooking piece and its stretching rod form a whole with the building body, which increases the density, prevents the occurrence of smoke and odor cross-talk, and effectively prevents water leakage at the docking parts of the smoke exhaust duct. The hook-and-loop parts adopt an angle fixing part with a specific structure. A notch for installing a clamp is provided in the middle of the outer angle of the angle fixing part, which can prevent relative sliding between the angle fixing part and the clamp; the inner side surface of the angle fixing part and the angle locking part is a rough surface, which can prevent relative sliding between the angle fixing part and the angle locking part and the outer wall of the flue; and the top of the angle locking part and the angle fixing part is provided with an inward curved edge, which can increase the friction between the angle fixing part and the angle locking part and the outer wall of the flue, increase the pulling force between the angle fixing part and the angle locking part relative to the outer wall of the flue, and further prevent relative sliding between the angle fixing part and the angle locking part and the outer wall of the flue. This completely solves the problem that the existing flue needs to be supported by a supporting part, which causes leakage, exposure of slurry, and poor sealing during the later grouting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure from a bird's-eye view;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the inner view;

[0021] Figure 4 It is a structural schematic diagram of another embodiment of the present invention;

[0022] Figure 5 for Figure 4 Schematic diagram of the structure from a bird's-eye view;

[0023] Figure 6 for Figure 4 Schematic diagram of the structure of the inner view;

[0024] Figure 7 for Figure 4 A schematic diagram of the structure of the interior view of another structure;

[0025] Figure 8It is a schematic diagram of the longitudinal cross-section structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0026] Referring to the accompanying drawings, the flue gas duct system for distributing the weight of the flue gas duct on the building includes a building composed of a frame and a floor 11, and a flue gas duct mounting hole 13 is provided on the floor slab. A flue gas duct 12 connected to each other up and down is provided in the flue gas duct mounting hole 13. The upper and lower connecting parts of the flue gas duct 12 are generally located in the flue gas duct mounting hole 13. A hooking piece locked on the outer wall of the flue gas duct is provided on the flue gas duct 12. An adjustable stretching rod 8 is provided between the hooking piece and the building. The hooking piece is located in the flue gas duct mounting hole 13. The weight of the flue gas duct is distributed on the building through the hooking piece to prevent the exhaust gas duct located on the relatively lower floor from being crushed.

[0027] See also Figure 1 — Figure 3 The hook-and-loop connector includes an angle fixing member 1, a connecting plate 4 is hinged on the relative outer side of the angle fixing member 1, and an angle locking member 3 corresponding to the angle fixing member 1 above and below is hinged on the upper end of the connecting plate 4. The angle fixing member 1 and the angle locking member 3 are generally made of angle steel, and a first hinge seat 5 is provided on the relative outer side of the angle fixing member 1, and a second hinge seat 10 is provided on the relative outer side of the angle locking member 3. The first hinge seat 5 and the second hinge seat 10 can also be circular rings welded on the outer corners of the angle fixing member 1 and the angle locking member 3. The angle fixing member 1 is locked to the outer wall of the flue gas duct by a clamp 2. The clamp 2 adopts a metal belt with a self-locking structure, and its structure is the prior art. A stretching rod 8 is provided between the side of the connecting plate 4 that is relatively far from the angle fixing member 1 at the lower end and the building body, so that the connecting plate 4 can rotate around the angle fixing member 1 and lock the angle locking member 3 to the outer wall of the flue gas duct for a second time. A mutually connected pulling mechanism is provided between the lower end of the stretching rod 8 and the connecting plate 4. See. Figure 1The lifting mechanism includes a lifting hole 7 arranged on the side of the connecting plate 4 away from the angle fixing piece 1 at the lower end relative to the connecting plate 4. The geometric shape of the connecting plate 4 is roughly triangular. The corners of the connecting plate 4 are provided with circular holes, one of which is used as the lifting hole 7, and the other two circular holes are hinged with the angle fixing piece 1 and the angle locking piece 3 through pins respectively. The lifting hole 7 is close to the end of the connecting plate 4 hinged with the angle fixing piece 1, that is, the lifting hole 7 is located at the lower end of the connecting plate 4 away from the side of the angle fixing piece 1, and the lower end of the stretching rod 8 is provided with a bent hook connected to the lifting hole 7 accordingly; the lifting mechanism can also be a lifting hook arranged on the connecting plate 4, and the aforementioned lifting hole 7 can be set to a groove shape. At this time, the aforementioned lifting hole 7 is inverted U-shaped, and the lower end of the stretching rod 8 is provided with a lifting hole corresponding to the lifting hook. Of course, the lifting mechanism can also be other well-known structures. The upper end of the stretching rod 8 is provided with a locking piece that can be adjusted up and down, and the locking piece can be a nut, that is, the upper end of the stretching rod 8 has a threaded section, and a cross arm 9 is provided at the flue gas duct mounting hole 13, and the cross arm 9 can be located at the corner of the flue gas duct mounting hole 13 or on two opposite hole walls, and the cross arm 9 is located on the top surface of the floor, and the upper end of the stretching rod 8 is connected to the cross arm 9. Of course, the stretching rod 8 can also be any other known structure, such as an oblique pull lock of an oblique pull rope, through which the stretching rod 8 can drive the connecting plate 4 to rotate around the angle fixing piece 1 and lock the angle locking piece 3 on the outer wall of the flue gas duct for the second time, and the upper end of the stretching rod 8 can also be connected to the frame of the building, such as a load-bearing column; the upper end of the stretching rod 8 can also be connected to the steel bar in the flue gas duct mounting hole 13. The connecting plate 4 that connects the angle fixing piece 1 and the angle locking piece 3 can also be other structures, such as a metal rod bent, and is respectively hinged to the hinged mounting seat of the angle fixing piece 1 and the angle locking piece 3, and is conveniently connected to the lower end of the stretching rod 8. A notch 6 for installing the clamp 2 is provided at approximately the middle of the outer corner of the angle fixing member 1, which can prevent relative sliding between the angle fixing member 1 and the clamp 2. The hinged part of the angle fixing member 1 is generally located below the notch 6, that is, below the clamp 2; of course, the clamp 2 can be fixed on the angle fixing member 1, and the locking part of the clamp 2 is close to one side of the angle fixing member 1. The inner side surface of the angle fixing member 1 and the angle locking member 3 is a rough surface, which can be pitted, nail-shaped or sawtooth-shaped, which can prevent relative sliding between the angle fixing member 1 and the angle locking member 3 and the outer wall of the flue. In order to increase the friction between the angle fixing piece 1 and the angle locking piece 3 and the outer wall surface of the flue gas duct, and to increase the pulling force between the angle fixing piece 1 and the angle locking piece 3 relative to the outer wall surface of the flue gas duct, an inward curved edge 15 is provided at the top of the angle locking piece 3, and an inward curved edge 15 is also provided at the top of the angle fixing piece 1. The inward extending distance of the curved edge 5 gradually decreases from the intersection of the two inner wall surfaces outward, that is, the inward extending distance of the curved edge 15 gradually decreases from the intersection of the two side walls of the angle locking piece 3 to the two sides in the width direction of the angle locking piece 3, and gradually decreases from the intersection of the two side walls of the angle fixing piece 1 to the two sides in the width direction of the angle fixing piece 1.The curved edge 15 can also be further processed into a sawtooth shape or a nail shape. The distance that the curved edge 15 extends inward relative to the inner wall of the angle fixing piece 1 and the angle locking piece 3 is generally 1-2 mm. When the angle fixing piece 1 and the angle locking piece 3 are locked on the outer wall of the flue gas duct for lifting the flue gas duct, the curved edge 15 partially penetrates into the outer wall of the corner of the flue gas duct, further preventing the angle fixing piece and the angle locking piece from sliding relative to the outer wall of the flue gas duct.

[0028] See also Figure 4 — Figure 6The hook-and-loop parts include an angle fixing part 1, which is generally made of angle steel. The angle fixing part 1 is vertically arranged up and down relative to the inner side surface of the upper end section. The inner side surface of the angle fixing part 1 relative to the lower end section is inclined at a certain angle relative to the inner side surface relative to the upper end toward the outer side surface, and the angle is 5-10 degrees. The angle fixing part 1 is locked on the outer wall of the top of the flue gas duct via a clamp 2 relative to the upper end section. The clamp 2 is a metal belt with a self-locking structure, and its structure is the prior art. A stretching rod 8 is provided between the lower end section of the angle fixing part 1 and the building body, which is used to pull the angle fixing part 1 relative to the lower end section relative to the outward warping and then press the angle pressing part 1 relative to the upper end section on the outer wall of the flue gas duct. A mutually connected lifting mechanism is provided between the lower end of the stretching rod 8 and the lower end section of the angle fixing part 1 relative to the lower end section. The lifting mechanism includes a hanging hole 7 arranged on the lower end section of the angle fixing part 1, and the hanging hole 7 can also be a ring welded on the outer wall of the lower end section of the angle fixing part 1, and the lower end of the stretching rod 8 is provided with a hook corresponding to the hanging hole 7; the lifting mechanism can also be a hanging hook arranged on the lower end section of the angle fixing part 1, and the hanging hook can be welded on the outer wall of the lower end of the angle fixing part 1, and the lower end of the stretching rod 8 is provided with a hanging hole corresponding to the hanging hook. Of course, the lifting mechanism can also be other known structures. The upper end of the stretching rod 8 is provided with a locking piece that can be adjusted up and down along it, and the locking piece can be a nut, that is, the upper end of the stretching rod 8 has a threaded section, and a cross arm 9 is provided at the flue gas duct mounting hole 13, and the cross arm 9 can be located at the corner of the flue gas duct mounting hole 13 or on two opposite hole walls, and the cross arm 9 is located on the top surface of the floor slab, and the upper end of the stretching rod 8 is connected to the cross arm 9. Of course, the stretching rod 8 can also be any other known structure, such as an oblique pull lock of an oblique pull rope, and the stretching rod 8 can drive the lower end of the angle fixing member 1 to bend outward relative to the outer wall of the flue gas duct. The upper end of the stretching rod 8 can also be connected to the frame of the building, such as a load-bearing column; the upper end of the stretching rod 8 can also be connected to the steel bar in the installation hole 13 of the flue gas duct. A notch 6 for installing the clamp 2 is provided in the approximate middle part of the outer angle of the upper end section of the angle fixing member 1 relative to the upper end section, which can prevent the angle fixing member 1 from sliding relative to the upper end section and the clamp 2. The inner side surface of the angle fixing member 1 relative to the upper end section is a rough surface, which can be pitted, nail-shaped or serrated, which can prevent the angle fixing member 1 from sliding relative to the upper end section and the outer wall of the flue gas duct. In order to increase the friction between the upper end section of the angle fixing part 1 and the outer wall surface of the flue gas duct, and to increase the pulling force between the upper end section of the angle fixing part 1 and the outer wall surface of the flue gas duct, an inwardly curved edge 15 is provided at the top of the angle fixing part 1, and the inwardly extending distance of the curved edge 15 gradually decreases from the intersection of the two inner wall surfaces of the angle fixing part 1 to the outside. The curved edge 15 can also be further processed into a sawtooth shape or a nail shape, and the inwardly extending distance of the curved edge 15 relative to the inner wall surface of the upper end section of the angle fixing part 1 is generally 1-2 mm.When the upper end section of the angle fixing piece 1 is locked on the outer wall of the flue gas duct for lifting the flue gas duct, the bent edge 15 partially penetrates into the outer wall of the flue gas duct corner, further preventing relative sliding between the upper end section of the angle fixing piece and the outer wall of the flue gas duct.

[0029] Figure 7 The hooking member shown is basically the same as the aforementioned structure, except that the angle fixing member 1 protrudes outward relative to the lower end section relative to the upper end section relative to the angle fixing member 1, and a clamp penetration seam 14 extending into the upper end section relative to the angle fixing member 1 is provided on both sides along the width direction of the lower end section relative to the angle fixing member 1, and the inner end surface of the clamp penetration seam 14 is roughly flush with the end of the notch 6 close to the upper end section relative to the angle fixing member 1.

[0030] Figure 8The figure shows the structure of the flue gas duct between the upper and lower adjacent floors. The upper and lower joint parts of the flue gas duct 12 are located in the flue gas duct installation hole 13. The top of the flue gas duct 12 on the relatively lower floor is provided with a hooking piece locked on the outer wall of the flue gas duct. An adjustable stretching rod 8 is provided between the hooking piece and the building. The upper end of the stretching rod 8 can be connected to the cross arm supported at the flue gas duct installation hole 13, or it can be connected to the frame of the building, such as the load-bearing column. The weight of the flue gas duct is distributed on the set building through the hooking piece to prevent the flue gas duct located on the relatively lower floor from being damaged. The smoke exhaust duct on the lower layer is collapsed, and no joint gap will appear at the upper and lower joints of the smoke duct, which is convenient for subsequent grouting and sealing. The connecting piece is located in the smoke duct mounting hole 13. After subsequent grouting and sealing, the connecting piece and its stretching rod form a whole with the building. At this time, the smoke duct mounting hole 13 is grouting-grouted to form an integrated structure with the floor slab and the outer wall of the smoke duct to form an integrated structure, so that the upper and lower joints of the smoke duct 12 and the connecting piece are all located in the floor slab, thereby increasing the density, preventing smoke and odor from leaking, and effectively preventing water leakage at the joint of the smoke exhaust duct. Of course, the upper and lower docking parts of the flue duct 12 can be located on the upper or lower side of the floor, and the hooking piece can be locked at any position of the outer wall of the flue duct, such as the middle section of the outer wall of the flue duct, the top of the outer wall of the flue duct 12 relative to the lower layer, or the bottom of the outer wall of the flue duct 12 relative to the upper layer. It is only necessary to ensure that the hooking piece is located in the flue duct mounting hole 13. After the flue duct mounting hole 13 is grouted to form an integrated structure with the floor and the outer wall of the flue duct, the hooking piece is located in the floor. The number of hooking pieces is at least one, installed at one corner of the flue duct 12, or two, installed at two opposite corners of the flue duct 12, or 2 or 4, respectively installed at the corners of the flue duct 12. After the clamp 2 is locked on the outer wall of the flue duct 12, a wedge-shaped piece, such as a wooden wedge, can be wedged between the outer corner of the flue duct 12 and the inner wall of the clamp 2 to increase the locking force between the clamp 2 and the flue duct 12. The hooking piece adopts an angular fixing piece with a specific structure. The angular fixing piece is locked on the outer wall of the top of the flue through a clamp to prevent sliding between the hooking piece and the flue, thereby dispersing the weight of the flue body to the building body on a specific floor, completely solving the problem that the existing flue needs to be supported by supporting parts, which makes it easy to leak grout, expose grout, and poor sealing during the later grouting process.

Claims

1. A flue gas duct system for distributing the weight of a flue gas duct on a building, comprising a building composed of a frame and a floor slab (11), wherein a flue gas duct mounting hole (13) is provided on the floor slab, wherein a flue gas duct (12) connected to each other up and down is provided in the flue gas duct mounting hole (13), wherein the flue gas duct mounting hole (13) is provided with a flue gas duct (12) connected to each other up and down, wherein the flue gas duct mounting hole (13) is characterized in that The smoke duct (12) is provided with a hooking piece locked on the outer wall of the smoke duct, a stretching rod (8) is provided between the hooking piece and the building, and the hooking piece is located in the smoke duct mounting hole (13) or in the floor slab; the hooking piece comprises an angle fixing piece (1), a connecting plate (4) is hingedly connected to the opposite outer side surface of the angle fixing piece (1), and an angle locking piece (3) corresponding to the upper and lower sides of the angle fixing piece (1) is hingedly connected to the upper end of the connecting plate (4); the angle fixing piece (1) is locked on the outer wall of the smoke duct through a clamp (2), and a lifting mechanism is provided between a side of the connecting plate (4) that is away from the angle fixing piece (1) relative to the lower end and a mutually connected lower end of the stretching rod (8); the lifting mechanism comprises a lifting hole (7) provided on a side of the connecting plate (4) that is away from the angle fixing piece (1) relative to the lower end, and a hook is provided at the lower end of the stretching rod (8) and is connected to the lifting hole (7) corresponding to the lifting hole (7).

2. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 1, characterized in that The upper and lower butt joints of the flue gas duct (12) are located in the flue gas duct installation hole (13) or in the floor slab.

3. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 1, characterized in that The hooking piece is arranged on the top of the outer wall of the flue gas duct (12) at a relatively lower layer, or the hooking piece is arranged on the bottom of the outer wall of the flue gas duct (12) at a relatively upper layer.

4. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 1, characterized in that A notch (6) for installing the clamp (2) is provided approximately in the middle of the outer corner of the angle fixing piece (1).

5. The flue gas duct system for distributing the weight of the flue gas duct on the building according to any one of claims 1 to 4, characterized in that The inner side surfaces of the angle fixing piece (1) and the angle locking piece (3) are rough surfaces.

6. The flue gas duct system for distributing the weight of the flue gas duct on the building according to any one of claims 1 to 4, characterized in that The top of the angular locking piece (3) is provided with an inwardly curved edge (15); the top of the angular fixing piece (1) is provided with an inwardly curved edge (15).

7. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 6, characterized in that The inward extension distance of the curved edges (15) at the top of the angle fixing member (1) and the angle locking member (3) gradually decreases from the intersection of the two inner wall surfaces outward.

8. A flue gas duct system for distributing the weight of a flue gas duct on a building, comprising a building composed of a frame and a floor slab (11), the floor slab being provided with a flue gas duct mounting hole (13), the flue gas duct (12) being connected to each other from top to bottom in the flue gas duct mounting hole (13), characterized in that The flue gas duct (12) is provided with a hooking piece locked on the outer wall of the flue gas duct, a stretching rod (8) is provided between the hooking piece and the building body, the hooking piece is located in the flue gas duct mounting hole (13) or in the floor slab, the hooking piece comprises an angle fixing piece (1), the angle fixing piece (1) is vertically arranged up and down relative to the inner side surface of the upper end section, the inner side surface of the angle fixing piece (1) relative to the lower end section is inclined at a certain angle to the outer side surface direction relative to the inner side surface relative to the upper end, the angle fixing piece (1) is locked on the outer wall of the flue gas duct relative to the upper end section through a clamp (2), and a lifting mechanism connected to each other is provided between the lower end section of the angle fixing piece (1) and the lower end of the stretching rod (8); the lifting mechanism comprises a lifting hole (7) provided on the lower end section of the angle fixing piece (1) or a circular ring welded on the outer wall of the lower end section of the angle fixing piece (1), and the lower end of the stretching rod (8) is provided with a hook corresponding to the lifting hole (7) or the circular ring.

9. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 8, characterized in that A notch (6) for installing the clamp (2) is provided at a substantially middle portion of the outer corner of the upper end section of the angular fixing piece (1).

10. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 8, characterized in that The lower end section of the angle fixing piece (1) extends outward relative to the upper end section of the angle fixing piece (1), and a hoop threading seam (14) extending into the upper end section of the angle fixing piece (1) is provided along both sides of the width direction of the lower end section of the angle fixing piece (1).

11. The flue gas duct system for distributing the weight of the flue gas duct on the building according to any one of claims 8 to 10, characterized in that The inner side surface of the angle fixing piece (1) relative to the upper end section is a rough surface.

12. The flue gas duct system for distributing the weight of the flue gas duct on the building according to any one of claims 8 to 10, characterized in that The top of the angled fixing piece (1) is provided with an inwardly bent edge (15).

13. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 12, characterized in that The inward extension distance of the bent edge (15) gradually decreases from the intersection of the two inner wall surfaces of the angle fixing member (1) toward the outside.

14. The flue gas duct system for distributing the weight of the flue gas duct on the building according to claim 1, characterized in that The upper end of the stretching rod (8) is provided with a locking piece which can be adjusted up and down along the stretching rod (8).

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