Smoke exhaust device of covering method greenhouse

Abstract

The invention discloses a smoke exhaust device of a covering method greenhouse, and relates to the technical field of covering method foundation pit construction, the smoke exhaust device comprises a greenhouse and trestles and concrete columns in a foundation pit, one side of one set of concrete columns is provided with an exhaust device, the top of the exhaust device is provided with a smoke exhaust mechanism extending to the outer side of the greenhouse, and the top of the exhaust device is provided with a smoke exhaust mechanism extending to the outer side of the greenhouse. The smoke exhaust mechanism comprises a canvas ventilation hose, a smoke exhaust pipeline and a smoke exhaust opening, and the smoke exhaust opening is located at the bottom of the greenhouse and communicates the interior and the exterior of the greenhouse. Through matched use of the electric hoist and the exhaust device, the working position of the exhaust device can be flexibly adjusted when the construction progress of the foundation pit is advanced and the height of the working position is continuously changed, smoke dust and harmful gas generated in the construction process are treated in an all-around mode, and it is guaranteed that the field air environment is clean and tidy; and meanwhile, the work of moving the exhaust device is completed through the electric hoist, the trouble of manual carrying is reduced, the time cost is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit construction using a covering method, and in particular to a smoke exhaust device for a greenhouse using a covering method. Background Art

[0002] Covering construction is commonly used in foundation pit projects for urban rail transit, underground pipelines and municipal construction. During construction, this method covers the construction area with a shed or closed structure to prevent dust and noise generated during construction from affecting the surrounding environment, which is conducive to the cleanliness and protection of the city appearance. Therefore, this construction method is particularly suitable for projects that need to keep part of the urban roads or sidewalks open, such as rail transit line extension and underground pipeline construction.

[0003] However, in order to isolate the impact of construction noise and dust on surrounding areas as much as possible, greenhouses or other structures built based on the covering method are usually highly intact, well sealed, and have poor air circulation. Welding, plastering and other engineering operations will generate a large amount of smoke and harmful gases inside the foundation pit. If they are not discharged in time, they will accumulate, often affecting the work efficiency of construction personnel in the greenhouse, laying hidden dangers of accidents, being detrimental to the physical and mental health of on-site managers and workers, and seriously threatening the normal operation and safety of the construction process. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a smoke exhaust device for a covering greenhouse to solve the technical problem in the prior art that smoke and dust generated in the greenhouse during covering foundation pit construction are difficult to be discharged in time, affecting the work efficiency of construction personnel.

[0005] To achieve the above object, the present invention provides the following technical solutions: a smoke exhaust device for a covering greenhouse, comprising a trestle and concrete columns in the greenhouse and a foundation pit, wherein one side of a group of the concrete columns is provided with an exhaust device;

[0006] A smoke exhaust mechanism extending to the outside of the greenhouse is arranged on the top of the exhaust device, and the smoke exhaust mechanism includes a canvas ventilation hose, a smoke exhaust pipe and a smoke exhaust duct opening. The smoke exhaust duct opening is located at the bottom of the greenhouse, and the smoke exhaust duct opening is circular in shape, connecting the inside and outside of the greenhouse, and presents an inverted L-shaped structure as a whole. The tail of the smoke exhaust duct opening is connected to the pre-laid smoke exhaust pipe. The smoke exhaust pipe is fixed to the lower side of the trestle at the top of the foundation pit, and a canvas ventilation hose is installed at the end of the smoke exhaust pipe. The canvas ventilation hose extends downward and is connected to the exhaust device fixed on the concrete column. A lifting mechanism is installed at the bottom of the trestle, and the lifting mechanism includes an electric hoist and a cable. The electric hoist is also connected to the exhaust device below through the cable;

[0007] The exhaust device and the concrete column are fixedly connected by a fixing mechanism, and the fixing mechanism is a rectangular frame composed of two long channel steels and two short channel steels. The fixing device is a rectangular frame composed of four channel steels, and the channel steels are connected by welding. The fixing mechanism and the concrete column are slidably connected by a fastening sliding mechanism;

[0008] The fastening sliding mechanism comprises two sets of positioning components and two sets of adjusting components, and the two sets of positioning components and the two sets of adjusting components are provided with connecting grooves matching with the long channel steel;

[0009] One side of the two positioning components and the two adjusting components is movably connected with a roller, and the roller is rotatably connected through a rotating shaft. One end of the two positioning components and the two adjusting components is evenly provided with a ball, and the roller and the ball are in contact with the outer surface of the concrete column;

[0010] The two groups of adjustment components further include an adjustment slider, a screw rod, a hexagonal slot, a limit plate, a first support block and a second support block. The adjustment slider is fixed inside the adjustment component and is slidably connected to the long channel steel, and a slide groove matching the adjustment slider is provided at one end of the long channel steel.

[0011] The first support block and the second support block are fixed inside the long channel steel, and a screw rod penetrating the adjusting slider is rotatably connected inside the first support block and the second support block through a bearing, and a hexagonal groove is opened inside one end of the screw rod, and a limit plate extending to the long channel steel and the inside of the screw rod is provided at one end of the long channel steel.

[0012] By adopting the above technical scheme and using the electric hoist in combination with the exhaust device, as the foundation pit construction progresses and the height of the working position changes continuously, the working position of the exhaust device can be flexibly adjusted to comprehensively handle the smoke and harmful gases generated during the construction process, thereby ensuring the cleanliness of the on-site air environment and thus protecting the health and safety of the construction workers. At the same time, the work of moving the exhaust device is completed by the electric hoist, which reduces the trouble of manual handling, saves time costs, and improves work efficiency.

[0013] Furthermore, the smoke exhaust mechanism also includes a clamp, one end of the smoke exhaust pipe is connected to the tail of the smoke exhaust duct, and the other end is connected to a canvas ventilation hose, and the overall structure is fixed to the lower side of the pier through the clamp, and the canvas ventilation hose extends along the concrete column into the foundation pit and is connected to the exhaust device.

[0014] By adopting the above technical solution, the smoke exhaust duct is fixed under the trestle through a clamp to ensure that it is firmly installed and the stability of the smoke exhaust is guaranteed.

[0015] Furthermore, threaded holes are provided at one end of the long channel steel and in the middle of the short channel steel, the exhaust device is located in the middle of the rectangular frame, the edge is tangent to the four channel steels, and the exhaust device is connected to the channel steels by bolts.

[0016] By adopting the above technical solution, the exhaust device can be stably installed on the concrete column through the fixing mechanism, ensuring that it will not shake or move during the smoke exhaust process.

[0017] To sum up, the present invention mainly has the following beneficial effects: the present invention uses an electric hoist in combination with an exhaust device, so that as the progress of foundation pit construction progresses and the height of the working position changes continuously, the working position of the exhaust device can be flexibly adjusted, and the smoke and harmful gases generated during the construction process can be fully handled to ensure the cleanliness of the on-site air environment, thereby protecting the health and safety of the construction personnel. At the same time, the work of moving the exhaust device is completed by using an electric hoist, which reduces the trouble of manual handling, saves time costs, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the exhaust device of the present invention from a first viewing angle;

[0020] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0021] Figure 4 It is a structural exploded view of the positioning assembly of the present invention;

[0022] Figure 5 It is a structural exploded view of the adjustment assembly of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the exhaust device of the present invention from a second viewing angle.

[0024] In the figure: 1. greenhouse; 2. trestle; 3. exhaust device; 4. fastening sliding mechanism; 401. positioning assembly; 402. adjustment assembly; 403. connecting groove; 404. roller; 405. rotating shaft; 406. ball bearing; 407. adjusting slider; 408. screw rod; 409. hexagonal groove; 410. limit plate; 411. first support block; 412. second support block; 5. smoke exhaust mechanism; 501. canvas ventilation hose; 502. smoke exhaust pipe; 503. smoke exhaust outlet; 504. hoist; 6. lifting mechanism; 601. electric hoist; 602. cable; 7. concrete column; 8. fixing mechanism; 801. long channel steel; 802. short channel steel; 803. bolt; 804. slide groove. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The following describes an embodiment of the present invention based on its overall structure.

[0027] Embodiment 1

[0028] A smoke exhaust device for a covering greenhouse, such as Figure 1-6 As shown, it includes a shed 1, a trestle 2, an exhaust device 3, a fastening sliding mechanism 4, a smoke exhaust mechanism 5, a lifting mechanism 6, a concrete column 7 and a fixing mechanism 8, wherein an exhaust fan is arranged inside the exhaust device 3, and under the active operation of the exhaust fan, dust in the foundation pit can be absorbed and discharged;

[0029] Specifically, the exhaust device 3 is one of the core components of the entire smoke exhaust system. Its main function is to generate suction to exhaust the smoke and harmful gases generated in the foundation pit. Through the powerful exhaust power, the smoke can be effectively extracted from the foundation pit to prevent the smoke from accumulating in the foundation pit, thereby ensuring the air quality of the construction site, providing a relatively clean working environment for the construction workers, improving the work efficiency of the construction workers, and reducing the harm of smoke and harmful gases to the health of the construction workers.

[0030] The shed 1 covers the foundation pit to cover the construction area and reduce the impact of the construction on the surrounding environment. A trestle 2 is provided in the foundation pit to provide a passage for construction personnel and equipment, and also serves as the installation foundation for components such as the smoke exhaust pipe 502. Concrete columns 7 are fixed in the foundation pit to play a supporting role.

[0031] An exhaust device 3 is provided on one side of one group of concrete columns 7, and the exhaust device 3 is used to discharge smoke and harmful gases generated in the foundation pit. The exhaust device 3 and the concrete column 7 are fixedly connected by a fixing mechanism 8;

[0032] The fixing mechanism 8 is a rectangular frame composed of two long channel steels 801 and two short channel steels 802. Threaded holes are provided at one end of the long channel steel 801 and the middle of the short channel steel 802. The exhaust device 3 is located in the middle of the rectangular frame, and its edge is tangent to the four channel steels. The exhaust device 3 is connected to the channel steels by bolts 803. This connection method enables the exhaust device 3 to be firmly installed on the concrete column 7 to ensure that it will not shake or move during the smoke exhaust process.

[0033] The smoke exhaust port 503 is located at the bottom of the greenhouse 1, is circular in shape, connects the inside and outside of the greenhouse 1, and is an inverted L-shaped structure. Its position and shape design are conducive to collecting smoke and harmful gases generated at different positions in the greenhouse 1, so that the smoke can naturally converge to the smoke exhaust port 503;

[0034] The tail of the smoke exhaust port 503 is connected to the pre-laid smoke exhaust pipe 502, and the smoke exhaust pipe 502 is fixed to the lower side of the trestle 2 at the top of the foundation pit. The smoke exhaust pipe 502 is fixed by a clamp 504 to ensure that it is firmly installed;

[0035] The smoke exhaust pipe 502 can transmit the smoke collected by the smoke exhaust port 503 to a suitable location. A canvas ventilation hose 501 is installed at the end of the smoke exhaust pipe 502. The canvas ventilation hose 501 extends downward and is connected to the exhaust device 3 fixed on the concrete column 7. The flexibility of the canvas ventilation hose 501 enables it to adapt to the changes in the height position of the exhaust device 3 to ensure smooth ventilation and transport the smoke and harmful gases transmitted from the smoke exhaust pipe 502 to the exhaust device 3.

[0036] The lifting mechanism 6 includes an electric hoist 601 and a cable 602. The electric hoist 601 is installed at the bottom of the trestle 2. The electric hoist 601 is connected to the exhaust device 3 below through the cable 602.

[0037] When the construction progress of the foundation pit advances and the height of the working position changes, the electric hoist 601 is started, and the electric hoist 601 adjusts the height position of the exhaust device 3 by retracting and releasing the cable 602. For example, when a large amount of smoke and dust is generated at a deeper position during construction, the electric hoist 601 lowers the cable 602 to lower the exhaust device 3 to a suitable height so as to better collect and discharge the smoke and dust. When the construction position moves up, the electric hoist 601 retracts the cable 602 to raise the height of the exhaust device 3, so as to always maintain effective treatment of smoke and dust and harmful gases;

[0038] The fixing mechanism 8 and the concrete column 7 are slidably connected via a fastening sliding mechanism 4, and the fastening sliding mechanism 4 includes two sets of positioning components 401 and two sets of adjusting components 402, and the two sets of positioning components 401 and the two sets of adjusting components 402 are provided with connecting grooves 403 matching with the long channel steel 801;

[0039] One side of the two positioning components 401 and the two adjusting components 402 is movably connected with a roller 404, and the roller 404 is rotatably connected through a rotating shaft 405. One end of the two positioning components 401 and the two adjusting components 402 is evenly provided with a ball 406, and the roller 404 and the ball 406 are in contact with the outer surface of the concrete column 7. This structure enables the fixing mechanism 8 to slide relatively on the concrete column 7, so that the horizontal position of the exhaust device 3 can be adjusted according to the actual construction needs.

[0040] The two sets of adjustment components 402 further include an adjustment slider 407, a screw rod 408, a hexagonal slot 409, a limit plate 410, a first support block 411 and a second support block 412. The adjustment slider 407 is fixed inside the adjustment component 402 and is slidably connected to the long channel steel 801. A slide groove 804 matching the adjustment slider 407 is provided at one end of the long channel steel 801.

[0041] The first support block 411 and the second support block 412 are fixed inside the long channel steel 801, and the support block 411 and the second support block 412 are rotatably connected with a screw rod 408 penetrating the adjustment slider 407 through a bearing, and a hexagonal groove 409 is opened inside one end of the screw rod 408, and a limit plate 410 extending to the long channel steel 801 and the screw rod 408 is provided at one end of the long channel steel 801;

[0042] When the exhaust device 3 needs to be disassembled, the construction personnel can use a tool to insert the hexagonal slot 409 at one end of the screw rod 408 to rotate the screw rod 408, so that the adjustment slider 407 moves in the long channel steel 801, and then the two groups of adjustment components 402 can be disassembled relative to the two groups of long channel steel 801, which is more convenient for disassembly and assembly, and it is convenient to replace the exhaust device 3 and install it on the concrete column 7 at different positions;

[0043] In the actual construction process, all components work together. When welding, plastering and other engineering operations generate smoke and harmful gases in the foundation pit, the smoke is absorbed by the exhaust fan built into the exhaust device 3, and the smoke and dust enter the interior of the canvas ventilation hose 501, and then pass through the smoke exhaust pipe 502 and are discharged to the outside through the smoke exhaust port 503;

[0044] With the assistance of the lifting mechanism 6 and the fastening sliding mechanism 4, the exhaust device 3 is at a suitable height and horizontal position to discharge smoke and harmful gases out of the greenhouse 1, thereby ensuring the air environment quality at the construction site, protecting the health and safety of construction workers, and improving construction efficiency.

[0045] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A smoke exhaust device for a greenhouse using a covering method, comprising a greenhouse (1) and a trestle (2) and a concrete column (7) in a foundation pit, characterized in that: One side of one group of the concrete columns (7) is provided with an exhaust device (3); The top of the exhaust device (3) is provided with a smoke exhaust mechanism (5) extending to the outside of the greenhouse (1), the smoke exhaust mechanism (5) comprising a canvas ventilation hose (501), a smoke exhaust pipe (502) and a smoke exhaust duct opening (503), the smoke exhaust duct opening (503) being located at the bottom of the greenhouse (1), and the tail of the smoke exhaust duct opening (503) being connected to the pre-laid smoke exhaust pipe (502), the smoke exhaust pipe (502) being fixed to the trestle (2) at the top of the foundation pit. On the lower side, a canvas ventilation hose (501) is installed at the end of the smoke exhaust pipe (502), and the canvas ventilation hose (501) extends downward and is connected to an exhaust device (3) fixed on a concrete column (7). A lifting mechanism (6) is installed at the bottom of the trestle (2), and the lifting mechanism (6) includes an electric hoist (601) and a cable (602). The electric hoist (601) is also connected to the exhaust device (3) below through the cable (602); The exhaust device (3) and the concrete column (7) are fixedly connected via a fixing mechanism (8), and the fixing mechanism (8) is a rectangular frame composed of two long channel steels (801) and two short channel steels (802). The fixing mechanism (8) and the concrete column (7) are slidably connected via a fastening sliding mechanism (4), and the fastening sliding mechanism (4) includes two groups of positioning components (401) and two groups of adjustment components (402), and the two groups of positioning components (401) and the two groups of adjustment components (402) are provided with connecting grooves (403) that match the long channel steels (801).

2. The smoke exhaust device for a greenhouse using the covering method according to claim 1 is characterized in that: One side of the two positioning components (401) and the two adjusting components (402) is movably connected with a roller (404), and the roller (404) is rotatably connected via a rotating shaft (405). One end of the two positioning components (401) and the two adjusting components (402) is evenly provided with a ball (406), and the roller (404) and the ball (406) are in contact with the outer surface of the concrete column (7).

3. The smoke exhaust device for a greenhouse covered by a covering method according to claim 1 is characterized in that: The two groups of adjustment components (402) further include an adjustment slider (407), a screw rod (408), a hexagonal slot (409), a limit plate (410), a first support block (411) and a second support block (412); the adjustment slider (407) is fixed inside the adjustment component (402) and is slidably connected to the long channel steel (801); and a slide groove (804) matching the adjustment slider (407) is provided at one end of the long channel steel (801).

4. The smoke exhaust device for a greenhouse using the covering method according to claim 3 is characterized in that: The first support block (411) and the second support block (412) are fixed inside the long channel steel (801), and a screw rod (408) penetrating the adjustment slider (407) is rotatably connected inside the first support block (411) and the second support block (412) through a bearing, and a hexagonal groove (409) is provided inside one end of the screw rod (408), and a limit plate (410) extending to the inside of the long channel steel (801) and the screw rod (408) is provided at one end of the long channel steel (801).

5. The smoke exhaust device for a greenhouse using the covering method according to claim 1 is characterized in that: The smoke exhaust mechanism (5) further comprises a clamp (504); one end of the smoke exhaust pipe (502) is connected to the rear end of the smoke exhaust duct (503); the other end is connected to a canvas ventilation hose (501); the whole structure is fixed to the lower side of the pier (2) through the clamp (503); the canvas ventilation hose (501) extends along the concrete column (7) into the foundation pit and is connected to the exhaust device (3).

6. The smoke exhaust device for a greenhouse using the covering method according to claim 1 is characterized in that: Threaded holes are provided at one end of the long channel steel (801) and in the middle of the short channel steel (802); the exhaust device (3) is located in the middle of the rectangular frame, with its edge tangent to the four channel steels, and the exhaust device (3) is connected to the channel steels via bolts (803).

7. The smoke exhaust device for a greenhouse using the covering method according to claim 1 is characterized in that: The smoke exhaust duct opening (503) is circular in shape, connecting the inside and outside of the greenhouse (1), and presents an inverted L-shaped structure as a whole.

8. The smoke exhaust device for a greenhouse using the covering method according to claim 1 is characterized in that: The fixing device (8) is a rectangular frame composed of four channel steels, and the channel steels are connected by welding.

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