An outdoor semi-permanent wind pipe fixing device

Abstract

The application provides an outdoor semi-permanent wind pipe fixing device, and belongs to the technical field of building construction, comprising a liftable main body and a buffer fixing mechanism arranged on the top of the liftable main body; the liftable main body comprises two oppositely arranged liftable frame bodies, the bottom of each liftable frame body is provided with a base connected with a ground pre-buried part, the liftable frame body is a foldable hinged structure, comprising a plurality of support rod parts connected through hinge shafts, and folding and unfolding of the liftable frame body is realized through the hinge shafts; the buffer fixing mechanism comprises at least one spindle-shaped rubber buffer pad, and the two ends of the spindle-shaped rubber buffer pad are fixed on the side surfaces of the two oppositely arranged liftable frame bodies respectively; the application is simple to install, adjustable in height, high in adaptability and reusable.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an outdoor semi-permanent duct fixing device. Background Technology

[0002] In building ventilation systems, especially in the construction of temporary or semi-permanent facilities (such as makeshift hospitals), the securing of outdoor ducts is a crucial step in ensuring the safe and stable operation of the exhaust system. According to relevant regulations, the outdoor exhaust outlets of the exhaust system must be located far from areas of human activity and must be positioned above the roof level. The horizontal distance between the exhaust outlet and the fresh air intake should not be less than 20 meters, and the vertical difference should be no less than 6 meters. In actual engineering projects, to meet these requirements, the outdoor duct exhaust outlets typically need to be raised to a height of 8 meters or more, which places high demands on the stability and safety of the duct securing method.

[0003] Currently, traditional methods for fixing air ducts mostly involve on-site welding and splicing of the frame to rigidly connect the air duct to the external scaffold structure. While this method achieves the desired fixing effect, it suffers from problems such as complex construction processes, low installation efficiency, significant material waste, high costs, and difficulty in reuse. Furthermore, due to the potential irregularity of the air duct's shape, traditional welding fixing methods have poor adaptability and cannot guarantee a complete fit with the outer wall of the air duct, thus affecting the stability and wind resistance of the fixation.

[0004] Therefore, there is an urgent need for an outdoor duct fixing device that is easy to install, height adjustable, adaptable, and reusable, in order to improve construction efficiency, reduce project costs, and ensure the stability and safety of ducts under various environmental conditions. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to address the shortcomings of existing technologies by providing an outdoor semi-permanent duct fixing device that is easy to install, height adjustable, highly adaptable, and reusable.

[0006] Technical Solution: The present invention provides an outdoor semi-permanent duct fixing device, comprising a liftable main body and a buffer fixing mechanism disposed on the top of the liftable main body; the liftable main body includes two opposing liftable frames, each liftable frame having a base at its bottom connected to a pre-embedded part in the ground, the liftable frame having a foldable hinged structure, including multiple sets of support rods connected by hinge shafts, the hinge shafts enabling the folding and unfolding of the liftable frame; the buffer fixing mechanism includes at least one spindle-shaped rubber buffer pad, the two ends of the spindle-shaped rubber buffer pad being respectively fixed to the sides of the two opposing liftable frames, the spindle-shaped rubber buffer pad being used to abut against and tightly fit the outer wall of the duct after the liftable frame is raised.

[0007] Two independent and individually adjustable liftable frames allow for flexible spacing adjustments based on the actual dimensions of the ductwork, forming a stable support framework. A spindle-shaped rubber buffer pad at the top of the frame acts as the actuator. Once the frame is raised to the designated height, its elastic deformation actively grips and conforms to the outer wall of the duct, transferring the duct load to the ground foundation. This achieves flexible clamping and fixation, avoiding rigid contact, effectively absorbing duct vibration, preventing stress concentration, protecting the duct's outer insulation layer from scratches, and increasing friction for a more secure fixation.

[0008] Furthermore, the base is equipped with connection holes, which are secured to expansion bolts pre-embedded in the ground via nuts. The pre-embedded expansion bolts provide anchoring force to the ground foundation. The base is fitted with the bolts through its connection holes and finally tightened with nuts. The preload provided by the nuts firmly presses the base into the ground, generating significant static friction to resist the overturning of the frame. Furthermore, the base is equipped with slide rails for the support rods to move back and forth. These slide rails form a fine-tuning mechanism in a two-dimensional plane. The support rods are connected to the base via the slide rails, allowing the operator to slide the entire frame forward, backward, left, and right in the horizontal plane before final locking.

[0009] Furthermore, the support members are equipped with telescopic and fixable diagonal braces. One end of the telescopic and fixable diagonal brace is connected to the first support member from the bottom upwards via an ear plate, and the other end is connected to the third support member in the same direction from the bottom upwards via an ear plate. The diagonal brace connects between the first and third support members of the frame, forming one or more stable triangular units with the main members. The telescopic function is used to adapt to changes in the node spacing when the frame is raised or lowered, and the fixed shape locks in the triangle shape. This transforms the hinged frame, which might otherwise deform into a parallelogram, into a geometrically invariant system, significantly improving the lateral stiffness and overall stability of the frame, and effectively resisting loads such as wind.

[0010] Furthermore, the telescopic fixed diagonal rod includes an outer sleeve, one end of which is provided with a connector for connecting to an ear plate, and the other end of which is nested with an inner sleeve that slides freely inside the outer sleeve. A nut is welded to the outer sleeve, and the inner sleeve is tightened by tightening a bolt. When the bolt is tightened, the bolt head presses the inner sleeve against the inner lining, and the positive pressure generated by the bolt creates maximum static friction between the contact surfaces of the inner and outer sleeves, thereby achieving length fixation.

[0011] Furthermore, the spindle-shaped rubber buffer pad's contour conforms to the shape of the duct; the contour-following design increases the actual contact area between the buffer pad and the outer wall of the duct, making the fixing force more evenly distributed on the duct wall, thus avoiding excessive local pressure that could cause duct deformation or damage to the insulation layer.

[0012] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: (1) By setting a liftable frame with a foldable hinge structure and a spindle-shaped rubber buffer pad, the present invention enables the device to have a wide range of size adaptability and excellent duct protection function; the hinge structure allows the frame to be raised and lowered to adapt to different duct installation heights, and its folding characteristics also facilitate transportation and storage, greatly improving the versatility and portability of the device; the spindle-shaped rubber buffer pad, as the direct contact part with the duct, can effectively absorb vibration and prevent stress concentration when it is tightly attached to the outer wall of the duct, avoiding scratches or pressure damage to the duct wall and its insulation layer caused by the traditional rigid fixing method, and realizing flexible clamping and protection; (2) The present invention forms a support system with fine adjustment function and ultra-high lateral stability by means of the slide rail set on the base and the telescopic fixable diagonal bar connected between the support rods; the slide rail structure allows the entire frame to be finely adjusted in the horizontal plane, effectively compensating for the positional error during civil engineering pre-embedding and duct installation, significantly reducing the installation difficulty and improving the success rate and efficiency of one-time centering and fixing; the telescopic fixable diagonal bar forms a triangular stable structure between the support rods, which greatly enhances the overall wind load resistance and lateral stiffness of the frame, prevents it from becoming unstable and deformed, and ensures the safety and reliability of long-term fixation of high-altitude ducts. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram illustrating the application scenario of the present invention; Figure 4 This is a flowchart of the installation process of the present invention. Detailed Implementation

[0014] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described.

[0015] like Figure 1An outdoor semi-permanent duct fixing device is shown, comprising a liftable main body and a buffer fixing mechanism disposed on the top of the liftable main body. The liftable main body includes two opposing liftable frames 1, each with a foldable hinged structure, including multiple sets of support rods 13 connected by hinge pins 12, which enable the folding and unfolding of the liftable frames 1. The buffer fixing mechanism includes at least one spindle-shaped rubber buffer pad 2, with both ends of the spindle-shaped rubber buffer pad 2 fixed to the sides of the two opposing liftable frames 1, the outline of which conforms to the shape of the duct 3. The spindle-shaped rubber buffer pad 2 is used to abut against and tightly fit the outer wall of the duct 3 after the liftable frame 1 is raised. Each liftable frame 1 has a base 11 at its bottom that connects to a pre-embedded part in the ground, and the base 11 has a connection hole, which is fixedly connected to an expansion bolt pre-embedded in the ground by a nut. The base 11 is provided with a slide rail 14, which allows the support rods 13 to move back and forth.

[0016] The support member 13 is equipped with a telescopic and fixable diagonal rod 4. One end of the telescopic and fixable diagonal rod 4 is connected to the first support member from the bottom upwards via an ear plate, and the other end of the telescopic and fixable diagonal rod 4 is connected to the third support member in the same direction from the bottom upwards via an ear plate. The telescopic and fixable diagonal rod 4 includes an outer sleeve 401. One end of the outer sleeve 401 is provided with a connector that connects to the ear plate, and the other end of the outer sleeve 401 is nested with an inner sleeve 402 that slides freely inside the outer sleeve 401. A nut is welded to the outer sleeve 401, and the inner sleeve 402 is tightened by tightening the bolts.

[0017] The installation method in this embodiment is as follows: 1. Before construction, organize operators to familiarize themselves with the installation drawings and technical requirements, and clarify the installation process and quality standards; prepare construction tools such as electric picks, impact drills, levels, theodolites (or total stations), wrenches, torque wrenches, hoisting equipment (if needed), and qualified expansion bolts, nuts, etc.; according to the design drawings, use measuring instruments to accurately measure and mark the theoretical center line and elevation of the air duct, and locate the installation center point of the two liftable frame bases according to the center line, and clearly mark the edge control line of the base with ink lines to ensure that the two frame bases are symmetrical and parallel.

[0018] 2. At the marked installation location of the base, drill holes in the concrete floor using an electric hammer or impact drill. The drilling diameter and depth must strictly adhere to the technical requirements of the selected expansion bolt specifications. Use a blower or a special hole cleaning tool to thoroughly clean the ash and debris from the holes, ensuring that the expansion bolts can be fully inserted. Insert the expansion bolts vertically into the holes and gently tap them with a hammer to allow the outer sleeve to expand and initially fix them in the holes. Ensure that the exposed thread length of the bolt meets the requirements for tightening with the base nut.

[0019] 3. Inspect the quantity, specifications, and quality of the liftable frame and accessories (such as diagonal braces and buffer pads) delivered to the site. Confirm that there is no deformation or damage, and that the moving parts are flexible and reliable. Align the connecting holes on the frame base with the pre-embedded expansion bolts, place it stably, and put washers and nuts on each expansion bolt. Use a regular wrench to initially tighten them so that the base is initially in contact with the ground. Do not tighten them completely at this time, so that fine adjustments can be made later using the base slide rails.

[0020] 4. Equipped with slide rails, the entire frame can be slightly pushed to adjust its horizontal position, so that the center of the rubber buffer pads on the top of the two frames is precisely aligned with the center line of the air duct. After the position and level are adjusted correctly, use a torque wrench to tighten all the nuts on the base completely according to the torque value required by the design, and complete the final rigid connection between the frame and the ground.

[0021] 5. After confirming safety, the operator releases the locking devices of the frame lifting mechanism, such as the hinge pins. Using mechanical jacking or manual synchronous operation, the two frames are smoothly raised to the designed height. During the process, it is necessary to ensure that the two frames rise at the same speed to avoid tilting. When the top of the frame is slightly lower than the bottom of the duct, the jacking is continued slowly, so that the spindle-shaped rubber buffer pad gradually contacts the outer wall of the duct and undergoes elastic deformation until it fits tightly. After confirming that the rubber pad is in full contact with the duct and the force is even, the hinge pins are inserted or all lifting locking devices are tightened to securely fix the frame at the current height.

[0022] 6. Check that all connection nodes (base nuts, hinge pins, diagonal pins, etc.) are tightened in place. Gently push the air duct manually or in a simple way to check its stability and ensure that there is no shaking or abnormal noise.

[0023] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An outdoor semi-permanent wind pipe fixing device, characterized by: The system includes a liftable main body and a buffer fixing mechanism set on the top of the liftable main body. The liftable main body includes two liftable frames (1) set opposite to each other. Each liftable frame (1) has a base (11) at the bottom that is connected to the ground embedded part. The liftable frame (1) is a foldable hinge structure and includes multiple sets of support rods (13) connected by hinge shafts (12). The folding and unfolding of the liftable frame (1) is realized by the hinge shafts (12). The buffer fixing mechanism includes at least one spindle-shaped rubber buffer pad (2). The two ends of the spindle-shaped rubber buffer pad (2) are respectively fixed to the sides of the two liftable frames (1) set opposite to each other. The spindle-shaped rubber buffer pad (2) is used to abut against and fit tightly against the outer wall of the air duct (3) after the liftable frame (1) is raised.

2. An outdoor semi-permanent wind pipe fixing device according to claim 1, characterized in that: The base (11) is provided with a connection hole, which is fixedly connected to an expansion bolt embedded in the ground by a nut.

3. An outdoor semi-permanent wind pipe fixing device according to claim 1, characterized in that: The base (11) is provided with a slide rail (14), which allows the support rod (13) to move back and forth.

4. An outdoor semi-permanent wind pipe fixing device according to claim 1, characterized in that: The support rod (13) is provided with a telescopic and fixable diagonal rod (4). One end of the telescopic and fixable diagonal rod (4) is connected to the first support rod from the bottom upward through an ear plate, and the other end of the telescopic and fixable diagonal rod (4) is connected to the third support rod in the same direction from the bottom upward through an ear plate.

5. An outdoor semi-permanent wind pipe fixing device according to claim 4, characterized in that: The telescopic fixed diagonal rod (4) includes an outer tube (401), one end of which is provided with a connector connected to the ear plate, and the other end of which is nested with an inner tube (402) that slides freely inside the outer tube (401). A nut is welded on the outer tube (401), and the inner tube (402) is tightened by tightening the bolt.

6. An outdoor semi-permanent wind pipe fixing device according to claim 1, characterized in that: The outline of the spindle-shaped rubber buffer pad (2) is adapted to the shape of the air duct (3).

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