Underground ventilation pipeline

Abstract

The underground ventilating duct comprises an air duct, an end cover is arranged at the end of the air duct in a sleeved mode, a filter screen is installed in the end cover in an embedded mode, positioning arms are fixed to the upper side and the lower side of the end, on the side of the end cover, of the air duct respectively, rotary knobs are movably connected to the inner walls of the positioning arms, and clamping pieces are movably installed at the ends of the rotary knobs. A clamping ring is fixedly mounted on the outer wall of the end cover on the side of the clamping piece; a positioning plate is arranged above the air channel in parallel, rod sleeves are fixed to the two ends of the positioning plate respectively, and supports are movably connected to the inner walls of the rod sleeves; an adjusting pipe is movably connected to the middle of the upper surface of the positioning plate, a lifting rod is movably connected to the inner wall of the adjusting pipe, and a gear is fixedly connected to the outer wall of the lower end of the adjusting pipe. According to the underground ventilation pipeline, the height of the support is conveniently adjusted, so that the device is conveniently mounted on an uneven wall top, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts for subway construction, in particular to an underground ventilation duct. Background Art

[0002] The subway is a common type of rail transportation, which is usually built underground to avoid affecting the ground planning. The subway is an important part of urban public transportation, which can alleviate urban traffic congestion and improve people's travel efficiency. When the subway is under underground construction, in order to ensure the safety of workers in the closed environment, underground ventilation ducts are needed to ventilate the subway.

[0003] For example, an underground ventilation duct for subway construction with publication number CN217961793U and authorization announcement date 20221206 can be ventilated and installed on the top of the wall through a bracket, but the bracket is not convenient for adjusting the height, resulting in the device being difficult to install on an uneven wall top, thereby increasing the limitations of the device. In view of the above problems, an innovative design is carried out based on the original underground ventilation duct. Utility Model Content

[0004] The utility model aims to provide an underground ventilation duct to solve the problem that the height of the bracket of the underground ventilation duct proposed in the above background technology is not convenient to adjust, which makes the device difficult to install on the uneven wall top, thereby increasing the use limitations of the device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an underground ventilation duct, comprising an air duct, an end cover is sleeved at the end of the air duct, a filter is embedded and installed inside the end cover, positioning arms are respectively fixed on the upper and lower sides of the end of the air duct on the side of the end cover, a knob is movably connected to the inner wall of the positioning arm, a clamp is movably installed on the end of the knob, and a clamp is fixedly installed on the outer wall of the end cover on the side of the clamp;

[0006] A positioning plate is arranged parallel to the air duct, rod sleeves are fixed at both ends of the positioning plate, and a bracket is movably connected to the inner wall of the rod sleeve;

[0007] An adjusting tube is movably connected to the middle of the upper surface of the positioning plate, a lifting rod is movably connected to the inner wall of the adjusting tube, a gear is fixedly connected to the outer wall of the lower end of the adjusting tube, a limiting arm is fixedly arranged on the upper surface of the positioning plate on the side of the adjusting tube, and a limiting mechanism is installed on the inner wall of the limiting arm.

[0008] Preferably, the air duct and the end cover are slidably connected.

[0009] Preferably, the positioning arm and the knob are threadedly connected, the knob and the clamp are rotatably arranged, and the clamp and the clamp form a sliding structure.

[0010] Preferably, a clamping rod is fixedly connected to the side outer wall of the clamping member, the clamping rod and the positioning arm are slidably arranged, and the cross-section shape of the clamping rod is set to be an "L" shape.

[0011] Preferably, the rod sleeve is fixedly connected to the air duct, and the rod sleeve is slidably connected to the bracket.

[0012] Preferably, the adjusting tube and the positioning plate form a rotating structure, the adjusting tube and the lifting rod are threadedly arranged, and the lifting rod and the bracket are fixedly connected.

[0013] Preferably, the limiting mechanism comprises a limiting button and a tooth plate, the limiting button is movably connected to the inner wall of the limiting arm, and the end of the limiting button is movably provided with a tooth plate.

[0014] Preferably, the limit button and the limit arm are threadedly connected, the limit button and the tooth plate are rotatably arranged, the tooth plate and the limit arm are slidably arranged, and the tooth plate and the gear are meshed.

[0015] The underground ventilation duct of the utility model has the following beneficial effects: the height of the bracket can be adjusted conveniently, so that the device can be installed on an uneven wall top, thereby improving the practicality of the device;

[0016] By rotating the adjusting tube, the lifting rod moves vertically in the adjusting tube, and then the lifting rod drives the bracket to move, so that the bracket slides relative to the rod sleeve for height adjustment, thereby making it convenient to adjust the height of the bracket, and further facilitating the installation of the device on an uneven wall top, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the overall front section structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the side section structure of the bracket of the utility model;

[0020] Figure 3 This is a schematic diagram of the top-sectional structure of the limiting mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the side section structure of the clamp of the utility model;

[0022] Figure 5 For this utility model Figure 1 A is an enlarged structural diagram;

[0023] Figure 6 For this utility model Figure 2 The enlarged structural diagram at B in FIG.

[0024]

Main component symbol description

[0025] 1. Air duct; 2. End cover; 3. Filter; 4. Positioning arm; 5. Knob; 6. Clamp; 7. Clamp rod; 8. Clamp ring; 9. Positioning plate; 10. Rod sleeve; 11. Bracket; 12. Adjusting tube; 13. Lifting rod; 14. Gear; 15. Limiting arm; 16. Limiting mechanism; 1601. Limiting button; 1602. Tooth plate. DETAILED DESCRIPTION

[0026] The underground ventilation duct of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments of the present invention.

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0031] See also Figure 1-6 The utility model provides a technical solution: an underground ventilation duct, including an air duct 1, an end cover 2 is sleeved at the end of the air duct 1, a filter screen 3 is embedded and installed inside the end cover 2, positioning arms 4 are fixed on the upper and lower sides of the end of the air duct 1 on the side of the end cover 2, a knob 5 is movably connected to the inner wall of the positioning arm 4, a clamp 6 is movably installed on the end of the knob 5, and a clamp ring 8 is fixedly installed on the outer wall of the end cover 2 on the side of the clamp 6.

[0032] A positioning plate 9 is arranged parallel to the top of the air duct 1 , and rod sleeves 10 are fixed to both ends of the positioning plate 9 , and a bracket 11 is movably connected to the inner wall of the rod sleeve 10 .

[0033] An adjusting tube 12 is movably connected in the middle of the upper surface of the positioning plate 9, a lifting rod 13 is movably connected to the inner wall of the adjusting tube 12, a gear 14 is fixedly connected to the outer wall of the lower end of the adjusting tube 12, a limiting arm 15 is fixedly provided on the upper surface of the positioning plate 9 on the side of the adjusting tube 12, and a limiting mechanism 16 is installed on the inner wall of the limiting arm 15.

[0034] In this example, the air duct 1 and the end cover 2 are slidably connected, so that the end cover 2 can be slid relative to the air duct 1 for disassembly and assembly.

[0035] In this example, the positioning arm 4 and the knob 5 are threadedly connected, the knob 5 and the clamp 6 are rotatably arranged, and the clamp 6 and the retaining ring 8 form a sliding structure, which is convenient for the user to rotate the knob 5 so that the knob 5 moves relative to the positioning arm 4, thereby driving the clamp 6 to move and sleeve to the outside of the retaining ring 8, and then limiting the retaining ring 8, so that the air duct 1 and the end cover 2 are stably connected.

[0036] The side outer wall of the clamp 6 in this example is fixedly connected with a clamp rod 7, and the clamp rod 7 and the positioning arm 4 are slidably arranged. The cross-sectional shape of the clamp rod 7 is set to be an "L" shape, so that when the clamp 6 moves, the clamp 6 drives the clamp rod 7 to slide relative to the positioning arm 4, thereby making the clamp 6 move stably.

[0037] In this example, the rod sleeve 10 is fixedly connected to the air duct 1, and the rod sleeve 10 is slidably connected to the bracket 11, so that the bracket 11 can slide relative to the rod sleeve 10 for height adjustment, thereby facilitating the installation of the device on an uneven wall top.

[0038] The adjusting tube 12 and the positioning plate 9 in this example form a rotating structure, the adjusting tube 12 and the lifting rod 13 are threaded, and the lifting rod 13 and the bracket 11 are fixedly connected, so that when the user rotates the adjusting tube 12, the lifting rod 13 moves vertically in the adjusting tube 12, thereby driving the bracket 11 to move vertically for height adjustment.

[0039] The limiting mechanism 16 in this example includes a limiting button 1601 and a tooth plate 1602. The limiting button 1601 is movably connected to the inner wall of the limiting arm 15. The end of the limiting button 1601 is movably provided with a tooth plate 1602, which is convenient for limiting the adjusting tube 12 through the limiting mechanism 16, thereby preventing the adjusting tube 12 from loosening and improving the stability of the device.

[0040] In this example, the limit button 1601 and the limit arm 15 are threadedly connected, the limit button 1601 and the tooth plate 1602 are rotatably arranged, the tooth plate 1602 and the limit arm 15 are slidably arranged, and the tooth plate 1602 and the gear 14 are meshed, so that the user can rotate the limit button 1601 to make the limit button 1601 move relative to the limit arm 15, thereby driving the tooth plate 1602 to slide relative to the limit arm 15, so that the tooth plate 1602 meshes with the gear 14 to limit the adjustment tube 12.

[0041] Working principle: According to Figure 1-6As shown, first, the user adjusts the height of the bracket 11 according to the installation environment. At this time, the user pushes the adjusting tube 12 to rotate relative to the positioning plate 9, and then the lifting rod 13 moves vertically in the adjusting tube 12. As the lifting rod 13 moves, the lifting rod 13 drives the bracket 11 to slide relative to the rod sleeve 10 to adjust the height of the bracket 11, so that the device can easily adjust the height of the bracket 11, and the device is convenient to install on an uneven wall top, which improves the practicality of the device. When the height adjustment of the bracket 11 is completed, the user stops rotating the adjusting tube 12 and turns the limit button 1601, and then the limit button 1601 moves relative to the limit arm 15, and then the limit button 1601 drives the tooth plate 1602 to slide relative to the limit arm 15, and then the tooth plate 1602 moves It meshes with the gear 14 to limit the adjustment tube 12 to prevent the adjustment tube 12 from loosening, and then the user moves the device to make the bracket 11 fit the wall top, and then connects the bracket 11 and the wall top with bolts to complete the installation of the device. Next, the user puts the end cover 2 on the end of the air duct 1, and then the user rotates the knob 5, and then the knob 5 moves relative to the positioning arm 4, and then the knob 5 drives the clamp 6 to move so that the clamp 6 is mounted on the outside of the clamp ring 8, and as the clamp 6 moves, the clamp 6 drives the clamp rod 7 to slide relative to the positioning arm 4, and the remaining knobs 5 are operated in a similar manner, so that the air duct 1 and the end cover 2 are stably connected to complete the installation of the filter 3, and then the filter 3 is used to block foreign matter to prevent foreign matter from entering the interior of the device and affecting the use of the device.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An underground ventilation duct, characterized in that: The invention comprises an air duct (1), wherein an end cover (2) is sleeved at the end of the air duct (1), a filter screen (3) is embedded and installed inside the end cover (2), positioning arms (4) are respectively fixed at the upper and lower sides of the end of the air duct (1) on the side of the end cover (2), a knob (5) is movably connected to the inner wall of the positioning arm (4), a clamping member (6) is movably installed at the end of the knob (5), and a clamping ring (8) is fixedly installed on the outer wall of the end cover (2) on the side of the clamping member (6); A positioning plate (9) is arranged in parallel above the air duct (1), rod sleeves (10) are respectively fixed to both ends of the positioning plate (9), and a bracket (11) is movably connected to the inner wall of the rod sleeve (10); An adjusting tube (12) is movably connected to the middle of the upper surface of the positioning plate (9), a lifting rod (13) is movably connected to the inner wall of the adjusting tube (12), a gear (14) is fixedly connected to the outer wall of the lower end of the adjusting tube (12), a limiting arm (15) is fixedly arranged on the upper surface of the positioning plate (9) on the side of the adjusting tube (12), and a limiting mechanism (16) is installed on the inner wall of the limiting arm (15).

2. An underground ventilation duct according to claim 1, characterized in that: The air duct (1) and the end cover (2) are slidably connected.

3. An underground ventilation duct according to claim 1, characterized in that: The positioning arm (4) and the knob (5) are threadedly connected, the knob (5) and the clamp (6) are rotatably arranged, and the clamp (6) and the clamp ring (8) form a sliding structure.

4. The underground ventilation duct according to claim 1, characterized in that: A clamping rod (7) is fixedly connected to the side outer wall of the clamping member (6); the clamping rod (7) and the positioning arm (4) are slidably arranged; and the cross-sectional shape of the clamping rod (7) is arranged to be an "L" shape.

5. The underground ventilation duct according to claim 1, characterized in that: The rod sleeve (10) and the air duct (1) are fixedly connected, and the rod sleeve (10) and the bracket (11) are slidably connected.

6. The underground ventilation duct according to claim 1, characterized in that: The adjusting tube (12) and the positioning plate (9) form a rotating structure, the adjusting tube (12) and the lifting rod (13) are threadedly arranged, and the lifting rod (13) and the bracket (11) are fixedly connected.

7. The underground ventilation duct according to claim 1, characterized in that: The limiting mechanism (16) comprises a limiting button (1601) and a tooth plate (1602); the limiting button (1601) is movably connected to the inner wall of the limiting arm (15); and the tooth plate (1602) is movably provided at the end of the limiting button (1601).

8. An underground ventilation duct according to claim 7, characterized in that: The limit button (1601) and the limit arm (15) are threadedly connected, the limit button (1601) and the tooth plate (1602) are rotatably arranged, the tooth plate (1602) and the limit arm (15) are slidably arranged, and the tooth plate (1602) and the gear (14) are meshed.

Images