Limiting device for preventing slipping and falling during mounting of vertical shaft air pipe

Abstract

The utility model relates to the technical field of vertical shaft air pipe installation, in particular to an anti-slip falling limiting device for vertical shaft air pipe installation, which comprises at least two limiting mechanisms, the two limiting mechanisms are oppositely arranged at the same height, each limiting mechanism comprises a base and a limiting piece, the limiting piece is hinged with the base through a pin shaft, and the limiting piece is arranged on the base. The limiting part comprises a first limiting arm and a second limiting arm, the first limiting arm can rotate within the range above the pin shaft, and the second limiting arm can abut against the base to limit the rotating range of the first limiting arm. The air pipe can be safely lifted in the vertical shaft, meanwhile, transverse movement of the air pipe relative to the vertical shaft can be limited, shaking of the air pipe in the lifting process can be reduced, the falling risk of the air pipe during inverted lifting is reduced, the safety of air pipe installation is improved, and a plurality of limiting devices can be installed in the vertical shaft according to actual conditions. And the stable and safe lifting of the air pipe is further realized.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft air duct installation, in particular to a limiting device for preventing the shaft air duct from slipping and falling during installation. Background Art

[0002] In various types of buildings, most air ducts adopt prefabricated structures, that is, the air duct segments processed in the factory are inverted and lifted for assembly on site. During installation, the air duct segments are transported to the bottom and middle of the shaft according to the position of the shaft, and the air duct assembly is concentrated. The air duct segments are connected by flanges. After the first section of the air duct segment is fixed by a fixing device, it is lifted along the shaft by the upper lifting device. After the height of one section of the air duct segment is raised, the second section of the air duct segment is connected, and then the height of another section of the air duct segment is raised. This connection and installation are carried out in sequence, so that the assembly of the air duct is always carried out in a fixed position on the lower floor. It was found during the on-site construction that the air duct may shake or slip during the inverted installation and lifting process of the air duct, causing the air duct to fall as a whole, posing a great safety hazard. Utility Model Content

[0003] The purpose of the utility model is to overcome the technical problems in the prior art that the air duct is prone to shaking, sliding and falling during the inverted installation and lifting process, which poses a great safety hazard, and to provide a limiting device for preventing the shaft air duct from sliding and falling during installation.

[0004] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0005] A limiting device for preventing a shaft air duct from slipping and falling during installation comprises at least two limiting mechanisms, wherein the two limiting mechanisms are arranged opposite to each other at the same height, the limiting mechanism comprises a base and a limiting member, the limiting member is hinged to the base via a pin shaft, the limiting member comprises a first limiting arm and a second limiting arm, the first limiting arm can rotate within a range above the pin shaft, and the second limiting arm can abut against the base to limit the rotation range of the first limiting arm.

[0006] The utility model discloses a limit device for preventing a shaft air duct from slipping and falling. The limit device is installed on the side wall of the shaft and limits the rotation range of the limit member so that the limit member can rotate within the range above the pin shaft. The shaft can be avoided during the lifting process of the shaft and when the shaft slides and falls, the limit member rotates toward the range below the pin shaft and abuts the base through the second limit arm to realize rotation limitation, thereby limiting the shaft and preventing the shaft from continuing to fall and enabling the shaft to be lifted safely in the shaft. At the same time, during the lifting process of the shaft, the limit member can limit the lateral movement of the shaft relative to the shaft due to the contact between the limit member and the shaft, thereby reducing the shaking during the lifting process of the shaft, further reducing the risk of falling during the inverted lifting of the shaft and improving the safety of the shaft installation. In addition, a plurality of limit devices can be used together and a plurality of limit devices can be installed in the shaft according to actual conditions to further realize stable and safe lifting of the shaft.

[0007] As a preferred solution of the utility model, the first limiting arm and the second limiting arm are integrally formed structural parts, so that the limiting parts are easy to prepare, and the first limiting arm and the second limiting arm rotate synchronously and cooperate with each other to achieve effective avoidance and limiting work during the air duct lifting process.

[0008] As a preferred solution of the utility model, an arc transition surface is provided between the first limiting arm and the second limiting arm, so that the limiting member can rotate smoothly, increase the rotation range of the limiting member in the space above the pin shaft, and ensure the smooth lifting of the air duct.

[0009] As a preferred solution of the utility model, the base includes a bottom plate and a supporting member, and the limiting member is hinged on the supporting member. The limiting device is installed on the inner wall of the shaft through the bottom plate, and the shaking space during the lifting process of the air duct is limited by the length of the supporting member, so that the setting of the limiting device can reduce the shaking during the lifting process of the air duct and ensure the stable lifting of the air duct.

[0010] As a preferred solution of the utility model, the support member is provided with a first blocking plate, which is arranged on a side of the pin shaft close to the bottom plate, and the second limit arm can rotate to abut against the first blocking plate. The first blocking plate limits the rotation range of the limit member, preventing the first limit arm from rotating toward the range below the pin shaft.

[0011] As a preferred solution of the utility model, the support member is provided with a second blocking plate, the second blocking plate is arranged above the first blocking plate, and the first limit arm can rotate to abut against the second blocking plate. The second blocking plate further limits the rotation range of the limit member, so that the first limit arm can play an effective limiting role in the process of the air duct falling.

[0012] As a preferred solution of the utility model, the support member comprises a steel member, a mounting hole is provided through the steel member, and the pin is adapted to the mounting hole. The support member structure of the steel member is stable and can provide stable support for the branch pipe during the falling process.

[0013] As a preferred solution of the utility model, the steel member includes an I-beam or a rectangular cross-section steel pipe.

[0014] As a preferred solution of the present utility model, more than one supporting member is arranged on the bottom plate.

[0015] As a preferred solution of the utility model, a spring is provided between the limiter and the base, so that the limiter is always in contact with the air duct through the spring, so as to avoid shaking of the air duct during the lifting process, reduce the risk of the air duct falling, and play a role of limiting support when the air duct falls.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model is a limit device for preventing the vertical shaft air duct from slipping and falling. The limit device is installed on the side wall of the vertical shaft. By limiting the rotation range of the limit member, the limit member can rotate within the range above the pin shaft. During the lifting process of the air duct, the air duct in the lifting process is avoided. When the air duct slides and falls, the limit member rotates toward the range below the pin shaft, and the second limit arm abuts against the base to achieve rotation limit, limit the air duct, prevent the air duct from continuing to fall, and enable the air duct to be safely lifted in the vertical shaft;

[0018] 2. The utility model provides a limit device for preventing the vertical shaft air duct from slipping and falling. During the lifting process of the air duct, the limiter is in contact with the air duct, which can limit the lateral movement of the air duct relative to the vertical shaft, which is beneficial to reduce the shaking of the air duct during the lifting process, further reduce the risk of falling during the inverted lifting of the air duct, and improve the safety of the air duct installation;

[0019] 3. The utility model provides a limit device for preventing a vertical shaft air duct from slipping and falling. A plurality of limit devices are used in combination. According to actual conditions, a plurality of limit devices can be installed in the vertical shaft to achieve stable and safe lifting of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a limit device (rotating state) for preventing a vertical shaft air duct from slipping and falling installed in Example 1;

[0021] Figure 2 A schematic diagram of a structure of a limit device (limited state) for preventing a vertical shaft air duct from slipping and falling installed in Example 1

[0022] Figure 3This is a schematic structural diagram of a limit device for preventing a shaft air duct from slipping and falling according to Example 3;

[0023] Figure 4 This is a schematic diagram of a state of a limiting device for preventing a vertical shaft air duct from slipping and falling installed in Example 1 during the air duct lifting process;

[0024] Figure 5 A schematic diagram of a state of a limiting device for preventing slipping and falling installed on a vertical shaft air duct in the air duct limiting process according to Example 1;

[0025] Markings in the figure: 1-base, 11-bottom plate, 12-support member, 2-limiting member, 21-first limiting arm, 22-second limiting arm, 23-arc transition surface, 3-pin shaft, 4-first blocking plate, 5-second blocking plate, 6-spring, 7-air duct. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in combination with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0027] In the description of the specific embodiments of the present invention, unless otherwise specified, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or the orientation or position relationship of the product / equipment / device of the utility model when it is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding devices / components / elements are within the error / deviation range, they can still achieve their functions in the solution of the utility model.

[0029] In addition, the expressions “first”, “second”, “third”, etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0030] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0031] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0032] Example 1

[0033] like Figure 1-Figure 5 As shown, a limiting device for preventing a shaft air duct from slipping and falling is installed, comprising two limiting mechanisms, which are arranged relatively at the same height, and the limiting mechanism comprises a base 1 and a limiting member 2, and the limiting member 2 is hinged to the base 1 through a pin 3, and the limiting member 2 comprises a first limiting arm 21 and a second limiting arm 22, and the first limiting arm 21 can rotate within a range above the pin 3, and the second limiting arm 22 can abut against the base 1 to limit the rotation range of the first limiting arm 21.

[0034] The present embodiment is a limiting device for preventing a shaft air duct from slipping and falling. A first blocking plate 4 is arranged between the pin shaft 3 and the shaft side wall on the base 1. The first limiting arm 21 and the second limiting arm 22 rotate synchronously with the pin shaft 3. The distance between the end of the second limiting arm 22 and the pin shaft 3 is smaller than the distance between the pin shaft 3 and the first blocking plate 4, so that the first limiting arm 21 can abut against the first blocking plate 4 during the rotation process. Now the limiting member 2 is further rotated, thereby realizing the rotation range of the first limiting arm 21 arranged on the pin shaft 3. In the present embodiment, the above-mentioned structural arrangement enables the first limiting arm 21 to rotate within the range above the pin shaft 3. When in use, the base 1 is mounted on the shaft side wall through conventional connecting parts, such as Figure 4 As shown, during the inverted lifting and installation process of the air duct 7, the limiter 2 rotates in the range above the pin shaft 3 to avoid the air duct 7 during the lifting process, so that the air duct 7 can be lifted smoothly. Figure 5 As shown, when the air duct 7 slips and falls, the flange on the air duct 7 drives the limiting member 2 to rotate toward the range below the pin shaft 3, and the second limiting arm 22 abuts the base 1 to achieve rotational limiting, and then the limiting of the air duct 7 is achieved to prevent the air duct 7 from continuing to fall, so that the air duct 7 can be safely lifted in the shaft. At the same time, during the lifting process of the air duct 7, due to the contact between the limiting member 2 and the air duct 7, the lateral movement of the air duct 7 relative to the shaft can be limited, which is beneficial to reduce the shaking of the air duct 7 during the lifting process, reduce the risk of falling of the air duct 7 during the inverted lifting, and improve the safety and stability of the installation of the air duct 7. In addition, for the air duct segments 7 during the installation process, the limiting device can also play the role of temporary support and limiting, which can prevent the risk of falling of the air duct 7 due to unstable connection between the air duct segments 7, play a role of anti-slip limiting, and effectively ensure the safety of construction personnel.

[0035] In this embodiment, the first blocking plate 4 can be a plate-shaped structural member welded to the base 1, or a blocking structure provided on the base 1, which can limit the rotation of the second limiting arm 22 within a certain range.

[0036] Specifically, according to actual conditions, multiple limit devices can be installed along the height direction of the shaft to further achieve stable and safe lifting of the air duct 7.

[0037] Preferably, the distance between the end of the first limiting arm 21 and the pin shaft 3 is greater than the distance between the end of the second limiting arm 22 and the pin shaft 3, so as to reduce the overall length of the limiting member 2, which can better meet the installation of the limiting device in the shaft and ensure that the installation of the limiting device will not affect the smooth lifting of the air duct 7.

[0038] In some embodiments, the first limiting arm 21 and the second limiting arm 22 may be structural members respectively disposed on the pin shaft 3 .

[0039] In other embodiments, the first limiting arm 21 and the second limiting arm 22 may also be an integrally formed structural member, and a circular arc transition surface 23 is provided between the first limiting arm 21 and the second limiting arm 22. The limiting member 2 is convenient to manufacture, and the first limiting arm 21 and the second limiting arm 22 rotate synchronously and smoothly, thereby achieving effective avoidance and limiting work during the lifting process of the air duct 7. At the same time, by providing the circular arc transition surface 23, the rotation range of the limiting member 2 in the space above the pin shaft 3 is increased, thereby ensuring smooth lifting of the air duct 7.

[0040] Preferably, the base 1 includes a bottom plate 11 and a support member 12, and the limiter 2 is hinged on the support member 12. The bottom plate 11 is used to realize the installation of the limiter on the inner wall of the shaft, and the length of the support member 12 is used to limit the shaking space of the air duct 7 during the lifting process, so that the setting of the limiter can reduce the shaking of the air duct 7 during the lifting process, thereby ensuring the stable lifting of the air duct 7.

[0041] The present embodiment is explained by taking the supporting member 12 of the steel member as an example. The bottom plate 11 is a plate-shaped structural member adapted to the side wall of the shaft. The supporting member 12 is a steel member which is vertically perpendicular to the bottom plate 11, such as a rectangular cross-section steel pipe. A mounting hole is horizontally penetrated through the supporting member 12, and a pin shaft 3 is arranged in the mounting hole. The limiting member 2 is arranged on the pin shaft 3 and is partially located in the rectangular cross-section steel pipe. A first blocking plate 4 is arranged between the pin shaft 3 and the bottom plate 11, and a second blocking plate 5 is arranged above the first blocking plate 4, so that the rotation range of the limiting member 2 is compressed by the first blocking plate 4 and the second blocking plate 5. The range of the upper and lower rotation of the limiting member 2 is certain. During the inverted lifting process of the air duct 7, the limiting member 2 can rotate freely in the range above the pin shaft 3, and the lifting of the air duct 7 is not restricted. When the air duct 7 slides down, the connecting flange of the air duct 7 is supported by the limiting member 2 to achieve support and limit of the air duct 7, thereby effectively preventing the air duct 7 from continuing to slide down.

[0042] Example 2

[0043] In the embodiment of the present invention, a limiting device is provided for preventing a shaft air duct from slipping or falling. More than one supporting member 12 is provided on the bottom plate 11 .

[0044] A limiting device for preventing a shaft air duct from slipping and falling is provided in the present embodiment. According to actual conditions, a plurality of supporting members 12 can be arranged on a base plate 11. Each supporting member 12 is provided with at least one limiting member 2, so that the supporting installation of a plurality of limiting members 2 can be realized through a base plate 11, the limiting position of the limiting device and the air duct 7 is increased, and the anti-slip and falling effect of the limiting device is improved.

[0045] Example 3

[0046] like Figure 3As shown, a limiting device for preventing a shaft air duct from slipping and falling is installed in this embodiment, and a spring 6 is provided between the limiting member 2 and the base 1.

[0047] The present embodiment is a limit device for preventing a shaft air duct from slipping and falling. One end of the spring 6 is connected to the base 1, and the other end is connected to the limit member 2, and the spring 6 is preferably located above the pin shaft 3. During the lifting process of the air duct 7, the limit member 2 rotates toward the range above the pin shaft 3 to compress the spring 6. In the process of lifting without the air duct 7, the spring 6 is free to extend to maintain the limit member 2 at the lower limit of the rotation range, so that the limit member 2 is always at the lower limit of the rotation range pushed by the spring 6. It can keep in contact with the air duct 7 during use, avoid shaking during the lifting process of the air duct 7, reduce the risk of the air duct 7 falling, and play an effective limiting support role when the air duct 7 falls.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A limiting device for preventing a shaft air duct from slipping and falling, characterized in that: The invention comprises at least two limiting mechanisms, the two limiting mechanisms are arranged opposite to each other at the same height, the limiting mechanisms comprise a base (1) and a limiting member (2), the limiting member (2) is hinged to the base (1) via a pin shaft (3), the limiting member (2) comprises a first limiting arm (21) and a second limiting arm (22), the first limiting arm (21) can rotate within a range above the pin shaft (3), and the second limiting arm (22) can abut against the base (1) to limit the rotation range of the first limiting arm (21).

2. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 1, characterized in that: The first limiting arm (21) and the second limiting arm (22) are integrally formed structural parts.

3. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 2, characterized in that: An arc transition surface (23) is provided between the first limiting arm (21) and the second limiting arm (22).

4. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 1, characterized in that: The base (1) comprises a bottom plate (11) and a supporting member (12), and the limiting member (2) is hinged on the supporting member (12).

5. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 4, characterized in that: The supporting member (12) is provided with a first blocking plate (4), the first blocking plate (4) being arranged on a side of the pin shaft (3) close to the bottom plate (11), and the second limiting arm (22) being capable of rotating to abut against the first blocking plate (4).

6. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 5, characterized in that: The supporting member (12) is provided with a second blocking plate (5), the second blocking plate (5) is arranged above the first blocking plate (4), and the first limiting arm (21) can be rotated to abut against the second blocking plate (5).

7. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 4, characterized in that: The supporting member (12) comprises a steel member, a mounting hole is provided through the steel member, and the pin shaft (3) is adapted to the mounting hole.

8. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 7, characterized in that: The steel member includes an I-beam or a rectangular cross-section steel pipe.

9. A limiting device for preventing vertical shaft air duct from slipping and falling as claimed in claim 8, characterized in that: More than one supporting member (12) is arranged on the bottom plate (11).

10. A limiting device for preventing a shaft air duct from slipping or falling as claimed in any one of claims 1 to 9, characterized in that: A spring (6) is provided between the limiting member (2) and the base (1).

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