Vertical shaft plugging device

Abstract

The utility model discloses a vertical shaft plugging device which comprises a net-shaped layer and is characterized in that extension plates are symmetrically and fixedly arranged on the two sides of the net-shaped layer, shaft seats are symmetrically and fixedly arranged at the bottoms of the extension plates, and a fixing shaft is fixedly arranged between the two shaft seats on one side. The fixing shaft is rotationally connected with abutting blocks used for abutting against the inner wall of the vertical shaft and symmetrically arranged, the fixing shaft is provided with an elastic mechanism used for keeping the abutting blocks at the fixed positions, a fixing plate is fixedly arranged in the middle of the net-shaped layer, a sliding shaft is fixedly arranged on the fixing plate, and the sliding shaft is slidably sleeved with a sliding sleeve. When the net-shaped layer is installed, the sliding sleeve is pulled to pull the abutting blocks through the pull ropes, the abutting blocks are made to rotate around the fixing shaft, and therefore the distance between the two abutting blocks on the outer side is reduced, the net-shaped layer is placed in a vertical shaft, the sliding sleeve is loosened, and the net-shaped layer is installed. The abutting block resets under the elastic action of the elastic mechanism, so that the outer wall abuts against the inner wall of the vertical shaft, installation is completed, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of plugging mechanisms, in particular to a shaft plugging device. Background Technique

[0002] There are a large number of various horizontal and vertical pipe shafts such as pipelines, electrical shafts, stairwells, and elevator shafts inside high-rise buildings, which run from the ground to the top floor. Once a fire breaks out, these pipe shafts will instantly become "chimneys" and generate a "chimney effect". The "chimney effect" refers to the phenomenon that due to the lower density of high-temperature gas in the "chimney", a pressure difference is formed with the ground pressure, causing the high-temperature gas to continuously rise and a vacuum siphon phenomenon to form at the bottom of the chimney. The higher the "chimney", the stronger the low pressure formed and the faster the hot air rises. In high-rise buildings, the chimney effect of pipe shafts is one of the important reasons for the fierce intensification of fires.

[0003] The utility model with the publication number CN204059616U discloses a plugging device for high-rise building shafts, which is arranged at the wellhead or inside a single shaft or several adjacent shafts. The plugging device includes a mesh layer arranged at the wellhead or inside a single shaft or several adjacent shafts and a plugging material spraying mechanism arranged outside the shaft; the plugging material spraying mechanism sprays plugging material onto the mesh layer during a fire, so that the plugging material accumulates on the mesh layer to plug the shaft. Compared with the prior art, this utility model can monitor environmental changes such as the temperature inside the well in real time, automatically plug the shaft, effectively inhibit the "chimney effect", and design a comprehensive plugging solution for various potential hazards that affect the safety of the building and may become "chimneys". At the same time, it is easy to maintain and has a low cost in the later stage.

[0004] The above existing solutions have the following problems: When installing the mesh layer in the above device, the mesh layer needs to be fixed inside the shaft, and it is rather troublesome to disassemble when the plugging material spraying mechanism needs to be maintained. Content of the Utility Model

[0005] The purpose of the utility model is to provide a shaft plugging device to solve the above technical problems.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A shaft plugging device includes a mesh layer. Extension plates are symmetrically and fixedly arranged on both sides of the mesh layer. Axis seats are symmetrically and fixedly arranged at the bottom of the extension plates. A fixed shaft is fixedly arranged between two axis seats on one side. A resisting block for abutting against the inner wall of the shaft is rotatably connected to the fixed shaft and is symmetrically arranged. A elastic force mechanism is arranged on the fixed shaft for keeping the resisting block in a fixed position. A fixing plate is fixedly arranged in the middle of the mesh layer. A sliding shaft is fixedly arranged on the fixing plate. A sliding sleeve is slidably sleeved on the sliding shaft. A pulling rope for rotating the resisting block is fixedly arranged on the outer wall of the sliding sleeve and is fixedly connected to the bottom of the resisting block.

[0007] Preferably, the elastic mechanism includes a torsion spring and a connecting plate. The connecting plate is fixedly connected to two abutting blocks on one side. The torsion spring is movably sleeved on a fixed shaft. One side of the torsion spring extends out and is fixedly connected to the bottom of the extension plate, and the other side is fixedly connected to the connecting plate.

[0008] Preferably, the cross-section of the abutting block is fan-shaped. The distance between the edges of the two extension plates is less than the width of the shaft well, and the distance between the two abutting blocks when they are located on the outermost side is greater than the width of the shaft well.

[0009] Preferably, a tight-fitting groove is formed at one end of the extension plate that abuts against the abutting block, and the inner wall of the tight-fitting groove fits with the end of the abutting block that abuts against it.

[0010] Preferably, the outer wall of the abutting block is roughened.

[0011] Preferably, a hand-held block is fixedly provided on the sliding shaft. The diameter of the hand-held block is larger than the diameter of the sliding shaft and they are coaxially arranged.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the settings of the shaft seat, fixed shaft, abutting block, connecting plate, torsion spring, extension plate, fixing plate, sliding shaft, sliding sleeve and pulling rope, the net layer is convenient to install in the shaft well and easy to disassemble, which is convenient for maintaining the spraying mechanism and ensures the stable installation of the plugging device. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is the external view schematic diagram of this embodiment;

[0015] Figure 2 It is the bottom view external view schematic diagram of this embodiment;

[0016] Figure 3 It is the partial enlarged view at the abutting block of this embodiment.

[0017] In the drawings, the list of components represented by each reference numeral is as follows:

[0018] 1, net layer; 2, shaft seat; 3, fixed shaft; 4, abutting block; 5, connecting plate; 6, torsion spring; 7, extension plate; 8, fixing plate; 9, sliding shaft; 10, sliding sleeve; 11, pulling rope; 12, hand-held block; 13, tight-fitting groove. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0020] Please refer to Figures 1-3 , the present utility model provides a technical solution: a shaft plugging device, including a mesh layer 1, extension plates 7 are symmetrically and fixedly arranged on both sides of the mesh layer 1, shaft seats 2 are symmetrically and fixedly arranged at the bottom of the extension plates 7, a fixed shaft 3 is fixedly arranged between the two shaft seats 2 on one side, and a contact block 4 for abutting against the inner wall of the shaft is rotatably connected to the fixed shaft 3 and is symmetrically arranged. A elastic force mechanism is arranged on the fixed shaft 3 for keeping the contact block 4 in a fixed position. A fixing plate 8 is fixedly arranged in the middle of the mesh layer 1, a sliding shaft 9 is fixedly arranged on the fixing plate 8, a sliding sleeve 10 is slidably sleeved on the sliding shaft 9, and a pulling rope 11 for rotating the contact block 4 is fixedly arranged on the outer wall of the sliding sleeve 10 and is fixedly connected to the bottom of the contact block 4.

[0021] Specifically, the elastic force mechanism includes a torsion spring 6 and a connecting plate 5. The connecting plate 5 is fixedly connected to the two contact blocks 4 on one side. The torsion spring 6 is movably sleeved on the fixed shaft 3. One side of the torsion spring 6 is led out and fixedly connected to the bottom of the extension plate 7, and the other side is fixedly connected to the connecting plate 5. The contact block 4 is kept stable and in the outermost state by the elastic force of the torsion spring 6. After the pulling rope 11 pulls the contact block 4 to rotate the contact block 4 around the fixed shaft 3 towards the inner side of the mesh layer 1 and then the pulling rope 11 is released, the contact block 4 is reset under the elastic force of the torsion spring 6 to abut against the inner wall of the shaft. Under the gravity of the plugging material spraying mechanism, the contact block 4 is clamped more tightly with the inner wall of the shaft, so as to realize the fixation of the mesh layer 1. The principle is the same as that of the mountaineering rock crack tool, and the installation is firm enough.

[0022] Specifically, the cross section of the contact block 4 is fan-shaped. The distance between the edges of the two extension plates 7 is less than the width of the shaft, so that the mesh layer 1 can be inserted into the shaft for installation. The distance between the two contact blocks 4 when they are located at the outermost side is greater than the width of the shaft, ensuring that the outer wall of the contact block 4 can abut against the inner wall of the shaft and ensuring the stable installation of the mesh layer 1.

[0023] Specifically, a fitting groove 13 is opened at the end of the extension plate 7 that abuts against the contact block 4. The inner wall of the fitting groove 13 is fitted with the end of the contact block 4 that abuts against it. When the contact block 4 is in the initial state, that is, when the distance between the outer walls of the two contact blocks 4 is the farthest, the contact block 4 is fitted with the inner wall of the fitting groove 13 under the elastic force of the torsion spring 6, increasing the contact area between the extension plate 7 and the fitting groove 13 and reducing the pressure, so as to avoid damage to the joint between the extension plate 7 and the contact block 4.

[0024] Specifically, the outer wall of the abutting block 4 is roughened to enhance the frictional force between the abutting block 4 and the inner wall of the shaft.

[0025] Specifically, a hand-held block 12 is fixedly arranged on the sliding shaft 9. The diameter of the hand-held block 12 is larger than that of the sliding shaft 9 and they are coaxially arranged. By means of the hand-held block 12, the sliding sleeve 10 is prevented from sliding out of the sliding shaft 9.

[0026] A specific application example of this embodiment is as follows:

[0027] When this device is in use, when installing the mesh layer, the mesh layer 1 and the plugging material spraying mechanism are placed into the shaft opening from the vertical well opening. At this time, the sliding sleeve 10 is pulled to slide on the sliding shaft 9, and the abutting block 4 is pulled by the pulling rope 11 to rotate the abutting block 4 around the fixed shaft 3 towards the inner side of the mesh layer 1. When the mesh layer 1 is in the installation position, the sliding sleeve 10 is released. Under the elastic force of the torsion spring 6, the abutting block 4 rotates around the fixed shaft 3 towards the outer side of the mesh layer 1 to reset until the outer side of the abutting block 4 abuts against the inner wall of the shaft. At this time, the hand can be released. Under the action of the gravity of the plugging material spraying mechanism, the abutting block 4 is clamped closer to the inner wall of the shaft, ensuring stable installation and completing the installation. When it needs to be disassembled, the pulling rope 11 is pulled to rotate the abutting block 4 around the fixed shaft 3 towards the inner side of the mesh layer 1. Losing the acting force between the abutting block 4 and the inner wall of the shaft, the mesh layer 1 and the plugging material spraying mechanism can be removed for maintenance, and the operation is convenient.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship based on the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0029] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "setting", "connection", "fixation", "rotary connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be modified without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shaft plugging device, comprising a mesh layer (1), characterized in that: Extension plates (7) are symmetrically fixed on both sides of the mesh layer (1), shaft seats (2) are symmetrically fixed on the bottom of the extension plates (7), a fixed shaft (3) is fixed between the two shaft seats (2) on one side, a stop block (4) for contacting the inner wall of the shaft is rotatably connected to the fixed shaft (3) and is symmetrically arranged, an elastic mechanism for keeping the stop block (4) in a fixed position is provided on the fixed shaft (3), a fixed plate (8) is fixedly provided in the middle of the mesh layer (1), a sliding shaft (9) is fixedly provided on the fixed plate (8), a sliding sleeve (10) is slidably sleeved on the sliding shaft (9), and a pull rope (11) fixedly connected to the bottom of the stop block (4) for rotating the stop block (4) is fixedly provided on the outer wall of the sliding sleeve (10).

2. A shaft plugging device according to claim 1, characterized in that: The elastic mechanism comprises a torsion spring (6) and a connecting plate (5); the connecting plate (5) is fixedly connected to two abutment blocks (4) located on one side; the torsion spring (6) is movably sleeved on the fixed shaft (3); one side of the torsion spring (6) is led out and fixedly connected to the bottom of the extension plate (7); and one side is fixedly connected to the connecting plate (5).

3. A shaft plugging device according to claim 1, characterized in that: The cross section of the stop block (4) is fan-shaped, the distance between the edges of the two extension plates (7) is smaller than the width of the shaft, and the distance between the two stop blocks (4) when they are located at the outermost sides is larger than the width of the shaft.

4. A shaft plugging device according to claim 1, characterized in that: One end of the extension plate (7) that abuts against the stop block (4) is provided with a close fitting groove (13), and an inner wall of the close fitting groove (13) abuts against the end of the stop block (4).

5. A shaft plugging device according to claim 1, characterized in that: The outer wall of the stop block (4) is roughly arranged.

6. A shaft plugging device according to claim 1, characterized in that: A hand grip block (12) is fixedly provided on the sliding shaft (9); the diameter of the hand grip block (12) is greater than the diameter of the sliding shaft (9) and is coaxially arranged.

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