Anti-seismic supporting structure of fire-fighting ventilation air pipe

Abstract

The utility model discloses an anti-seismic supporting structure of a fire-fighting ventilation air pipe, and relates to the technical field of fire-fighting ventilation. The ventilation pipe comprises a first shell, the inner surface of the first shell is fixedly provided with a ventilation pipe body, the bottom end of the first shell is connected with an anti-seismic structure, the top end of the first shell is provided with a supporting piece, the anti-seismic structure comprises a bottom plate, and the two sides of the top end of the bottom plate are each provided with a supporting rod and a third shell. A first damping spring shock absorber is fixedly installed on the inner surface of the bottom end of the third shell, a pressing plate is fixedly connected to the top end of the first damping spring shock absorber, and two conical sliding blocks are installed on the inner surface of the upper portion of the third shell in a sliding mode. The risk that the air pipe falls off due to vibration is reduced, the top plate can be fixedly connected with the second shell through the limiting plate in the supporting piece, and the supporting piece cannot be stressed and deformed due to vibration through the second damping spring shock absorber.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting ventilation, in particular to an anti-seismic supporting structure for a fire-fighting ventilation duct. Background Art

[0002] At present, ventilation ducts are metal or non-metal pipes used in ventilation and air conditioning engineering of industrial and civil buildings. They are a kind of municipal infrastructure to make air flow and reduce the concentration of harmful gases. They are divided into rectangular ducts and circular ducts. During the installation of ventilation ducts, they need to be fixed to the wall through a supporting structure. Therefore, it is necessary to provide an earthquake-resistant supporting structure for fire-fighting ventilation ducts.

[0003] According to the announcement number CN208935556U, a seismic hanger structure for a suspended fan duct is disclosed. This technology discloses "technical solutions including a C-shaped channel steel bracket, a C-shaped channel steel beam, a ventilation duct pressing C-shaped channel steel, a ventilation duct pressing screw rod, a hexagonal bolt, a wall and an I-beam. The utility model has the technical effects of replacing the lateral support bracket by hanging the beam on the I-beam and installing the other end of the beam on the side wall to form a seismic hanger structure for the fan duct with a suspended beam";

[0004] However, the prior art still has the following problems:

[0005] Firstly, the existing ventilation ducts are fixed with only a few support frames. In the face of strong vibrations, the support frames may fall apart or fall off at the connection with the wall top, which may cause casualties or property losses. Secondly, the existing duct support structures are mostly fixed connections. In the face of vibrations, there is no space for the ventilation duct to buffer, which causes the support frames to be subjected to great forces, which may cause the support frames to deform and increase the danger of the building.

[0006] In view of the above problems, the inventor proposes a seismic support structure for fire-fighting ventilation ducts to solve the above problems. Utility Model Content

[0007] In order to solve the problems of insufficient buffering and earthquake resistance of the supporting structure of the air duct and inconvenient fixation; the purpose of the utility model is to provide a seismic support structure for fire-fighting ventilation ducts.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a seismic support structure for a fire-fighting ventilation duct, comprising a first shell, a ventilation duct body is fixedly installed on the inner surface of the first shell, a seismic structure is connected to the bottom end of the first shell, a support member is arranged at the top end of the first shell, the seismic structure comprises a bottom plate, support rods and a third shell are installed on both sides of the top end of the bottom plate, a first damping spring shock absorber is fixedly installed on the lower inner wall of the third shell, a pressure plate is fixedly connected to the top end of the first damping spring shock absorber, two conical sliders are slidably installed on the upper inner surface of the third shell, a telescopic spring is fixedly installed between the two conical sliders, a fixed plate is slidably installed on the top end of the conical slider, and grooves for matching the conical sliders are provided on both sides of the bottom end of the fixed plate, the grooves are "T"-shaped, the first support plate is "U"-shaped, a connecting rod is rotatably connected to the middle part of the support rod, and the end of the connecting rod away from the support rod is rotatably connected to the first shell, the bottom plate is slidably connected to the support rod, and the bottom plate is fixedly connected to the third shell.

[0009] Preferably, the support member includes a second shell, the bottom end of the second shell is fixedly connected to the first shell, the top end of the second shell is fixedly connected to the first support plate, the upper inner surface of the first support plate is fixedly connected to three first sliding bars, the middle parts of the three first sliding bars are slidably sleeved with second sliding bars, the outer surfaces of the second sliding bars are sleeved with second damping spring shock absorbers, the top ends of the three second sliding bars are commonly fixedly connected to the top plate, the bottom ends of the second sliding bars penetrate the first sliding bar and the first support plate and are fixedly connected to the limiting plate, the top ends of the two first support plates are slidably sleeved with the second support plate, and the top ends of the second support plates are fixedly connected to the top plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model adopts a seismic-resistant structure, and utilizes a structure composed of a support rod, a first damping spring shock absorber, a pressure plate, a conical slider and a telescopic spring, so that the ventilation duct body has space for buffering and shock absorption when vibrating, thereby reducing the risk of the duct falling off due to vibration.

[0012] 2. The utility model can fix the top plate and the second shell body by means of the first slide bar in the support and the limit plate installed at the bottom end of the first slide bar, while the first slide bar and the second damping spring shock absorber can prevent the support member from being deformed due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 It is a partial structural schematic diagram of the utility model.

[0016] Figure 3 This is a schematic diagram of the earthquake-resistant structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the support structure of the utility model.

[0018] In the figure: 1. ventilation duct body; 2. earthquake-resistant structure; 3. support member; 201. first shell; 202. slide groove; 203. support rod; 204. fixing plate; 205. bottom plate; 206. connecting rod; 207. conical slider; 208. pressure plate; 209. first damping spring shock absorber; 210. third shell; 211. telescopic spring; 212. groove; 301. second slide rod; 302. second damping spring shock absorber; 303. gasket; 304. top plate; 305. bolt; 306. second shell; 307. limit plate; 308. first slide rod; 309. first support plate; 310. second support plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example: Figure 1-4As shown, the utility model provides a seismic support structure for fire ventilation ducts, including a first shell 201, a ventilation duct body 1 is fixedly installed on the inner surface of the first shell 201, the bottom end of the first shell 201 is connected to a seismic structure 2, a support member 3 is arranged at the top of the first shell 201, and the seismic structure 2 includes a bottom plate 205, support rods 203 and a third shell 210 are installed on both sides of the top of the bottom plate 205, the two third shells 210 are between the two support rods 203, and the bottom plate 205 and the support rod 203 are connected in a sliding manner. The bottom plate 205 can slide in the slide groove 202 of the support rod 203. The bottom plate 205 is fixedly connected to the third shell 210. The middle of the support rod 203 is movably connected with a connecting rod 206, and the end of the connecting rod 206 away from the support rod is rotatably connected to the first shell 201. The middle of the support rod 203 is provided with a through slide groove 202, and the other end of the connecting rod 206 is slidably arranged inside the slide groove 202. 203 allows the first shell 201 to move in a limited space. The lower inner wall of the bottom end of the third shell 210 A first damping spring shock absorber 209 is fixedly installed, and a pressure plate 208 is fixedly connected to the top of the first damping spring shock absorber 209. Two conical sliders 207 are slidably installed on the upper inner surface of the third housing 210. A telescopic spring 211 is fixedly installed between the two conical sliders 207. When the conical slider 207 is subjected to a force applied from above, the telescopic spring 211 will shrink with the conical slider 207, and then the conical slider 207 will slide downward, and the pressure plate 208 will catch the conical slider 207 and help it rebound. A fixing plate 204 is slidably installed on the top, and grooves 212 for cooperating with the conical slider 207 are opened on both sides of the bottom end of the fixing plate 204. The groove 212 is "T"-shaped. When the ventilation duct body 1 vibrates, it will vibrate with the first shell 201, and then the first shell 201 will apply a downward force to the fixing plate 204, and the fixing plate 204 will press the conical slider 207 onto the pressure plate 208. The first damping spring shock absorber 209 under the pressure plate 208 can offset the upper force and then rebound the conical slider 207.

[0021] The support member 3 includes a second shell 306, the bottom end of the second shell 306 is fixedly connected to the first shell 201, the top end of the second shell 306 is fixedly connected to a first support plate 309, the first support plate 309 is "U" shaped, the upper inner surface of the first support plate 309 is fixedly connected to three first slide bars 308, the middle parts of the three first slide bars 308 are all slidably sleeved with a second slide bar 301, the outer surface of the second slide bar 301 is sleeved with a second damping spring shock absorber 302, the top ends of the three second slide bars 301 are commonly fixedly connected to a top plate 304, and the bottom ends of the second slide bars 301 penetrate The first slide bar 308 and the first support plate 309 are fixedly connected to the limit plate 307. The second damping spring shock absorber 302 can be used in conjunction with the second slide bar 301 to drive the top plate 304 to extend and retract. The top ends of the two first support plates 309 are slidably sleeved with the second support plate 310, and the top ends of the second support plates 310 are fixedly connected to the top plate 304. The device is fixed to the roof with bolts 305. When encountering vibration, the first slide bar 308 cooperates with the second slide bar 301 and the second damping spring shock absorber 302 sleeved on the outer surface thereof to buffer, thereby offsetting the vibration.

[0022] The bottom end of the second damping spring shock absorber 302 is fixedly connected to the top end of the first sliding rod 308 , and the bottom end of the first housing 201 is fixedly connected to the fixing plate 204 .

[0023] Gaskets 303 are provided at the top and bottom ends of both sides of the top plate 304. Bolts 305 are threadedly connected on both sides of the top plate 304, and the bolts 305 threadedly penetrate the gaskets 303. The bolts 305 provided on both sides of the top plate 304 can fix the device on the roof, and gaskets 303 are provided where the bolts 305 penetrate the top plate 304.

[0024] Working principle: First, the device is installed on the top of the wall with bolts 305. Then, when encountering vibration, the ventilation pipe body 1 transmits the vibration to the fixing plate 204 below, and then the fixing plate 204 presses the conical slider 207 below. Then, the conical slider 207 contracts inwards under the action of the telescopic spring 211 and presses the pressing plate 208 downward. The pressing plate 208 offsets the vibration force under the action of the first damping spring shock absorber 209 and helps the conical slider 207 rebound. The support rods 203 on both sides can support the ventilation pipe body 1 and help offset the vibration force.

[0025] The first slide bar 308 and the second slide bar 301 cooperate with the limit plate 307 at their bottom ends to fix the first shell 201, and the first slide bar 308 cooperates with the second damping spring shock absorber 302 to more easily offset the force generated by the vibration. The limit plate 307 can prevent the second slide bar 301 from falling off, and the first support plate 309 and the second support plate 310 can cooperate with the first slide bar 308 and the second slide bar 301 to reduce vibration.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fire-fighting ventilation duct seismic support structure, comprising a first shell (201), characterized in that: A ventilation pipe body (1) is fixedly mounted on the inner surface of the first shell (201); a seismic-resistant structure (2) is connected to the bottom end of the first shell (201); and a support member (3) is provided at the top end of the first shell (201); The anti-seismic structure (2) comprises a bottom plate (205), support rods (203) and a third shell (210) are installed on both sides of the top of the bottom plate (205), a first damping spring shock absorber (209) is fixedly installed on the lower inner wall of the third shell (210), and a pressure plate (208) is fixedly connected to the top of the first damping spring shock absorber (209), two conical sliders (207) are slidably installed on the upper inner surface of the third shell (210), a telescopic spring (211) is fixedly installed between the two conical sliders (207), a fixing plate (204) is slidably installed on the top of the conical slider (207), and grooves (212) used to match the conical slider (207) are provided on both sides of the bottom of the fixing plate (204).

2. A fire-fighting ventilation duct seismic support structure as claimed in claim 1, characterized in that: The support member (3) comprises a second shell (306), the bottom end of the second shell (306) is fixedly connected to the first shell (201), the top end of the second shell (306) is fixedly connected to a first support plate (309), the upper inner surface of the first support plate (309) is fixedly connected to three first sliding bars (308), the middle parts of the three first sliding bars (308) are slidably sleeved with a second sliding bar (301), the outer surface of the second sliding bar (301) is sleeved with a second damping spring shock absorber (302), the top ends of the three second sliding bars (301) are commonly fixedly connected to a top plate (304), the bottom ends of the second sliding bars (301) penetrate the first sliding bars (308) and the first support plate (309) and are fixedly connected to a limiting plate (307), the top ends of the two first support plates (309) are slidably sleeved with a second support plate (310), and the top ends of the second support plates (310) are fixedly connected to the top plate (304).

3. A fire-fighting ventilation duct seismic support structure as claimed in claim 2, characterized in that: The bottom end of the second damping spring shock absorber (302) is fixedly connected to the top end of the first sliding rod (308), and the bottom end of the first housing (201) is fixedly connected to the fixing plate (204).

4. The fire-fighting ventilation duct seismic support structure according to claim 2, characterized in that: Gaskets (303) are provided at the top and bottom ends of both sides of the top plate (304), and bolts (305) are threadedly connected to both sides of the top plate (304), and the bolts (305) threadably penetrate the gaskets (303).

5. The fire-fighting ventilation duct seismic support structure according to claim 2, characterized in that: The groove (212) is in a "T" shape, and the first support plate (309) is in a "U" shape.

6. The fire-fighting ventilation duct seismic support structure according to claim 1, characterized in that: A through-type sliding groove (202) is provided in the middle of the support rod (203), and the other end of the connecting rod (206) is slidably arranged inside the sliding groove (202).

7. The fire-fighting ventilation duct seismic support structure according to claim 1, characterized in that: The middle part of the support rod (203) is movably connected to a connecting rod (206), and one end of the connecting rod (206) away from the support rod (203) is rotatably connected to the first housing (201).

8. The fire-fighting ventilation duct seismic support structure according to claim 1, characterized in that: The bottom plate (205) and the support rod (203) are slidably connected, and the bottom plate (205) and the third shell (210) are fixedly connected.

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