Flange holding mechanism

Abstract

The utility model belongs to the technical field of air pipe connecting mechanisms, and particularly relates to a flange enclasping mechanism which comprises a ring body formed by connecting a plurality of enclasping pieces in a bolting mode, an opening is formed between two enclasping pieces, a locking mechanism is arranged at the opening, and the ring body can be opened from the opening to be buckled on a butt joint flange by unlocking the locking mechanism. A cavity is formed in the side wall of the inner ring of the ring body, the section, cut along the diameter of the ring body, of the cavity comprises contraction sections which are gradually reduced in the direction of the outer ring of the ring body and are symmetrical up and down, and when the locking mechanism is locked, the edge of the flange abuts against the side wall of the cavity, and the flange is subjected to inward pressure of the ring body. The flange enclasping mechanism can evenly apply pressure to the flange in multiple directions, the force application area is large, the force application directions are multiple, the flange enclasping mechanism can deform to a certain degree along with the flange, even if an air pipe shakes under the action of external force, connection can still be kept stable, air tightness is not prone to being lost, and the flange enclasping mechanism is more durable.

Description

Technical Field

[0001] The utility model belongs to the technical field of air duct connection mechanisms, and in particular relates to a flange clamping mechanism. Background Art

[0002] Air ducts are pipe systems used for air delivery and distribution. The process of arranging air ducts often involves pipe docking. In the prior art, air ducts with flanges are generally bolted directly on the flanges with screws, and are connected at several fastening points where the screws are located. However, some air ducts are arranged outdoors and may shake under the action of external forces such as wind. When the existing connection method is used for connection, the docking points may wear and the screws may also stretch and deform. After a period of use, the air tightness will be reduced. Utility Model Content

[0003] In order to solve the above technical problems, it is necessary to provide a more durable flange clamping mechanism.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A flange clamping mechanism comprises a ring body composed of a plurality of clamping parts bolted together, wherein an opening is arranged between two clamping parts, and a locking mechanism is arranged at the opening, and the ring body can be opened from the opening to be snapped onto the docking flange by releasing the locking mechanism; a cavity is arranged on the side wall of the inner ring of the ring body, and the cross-section of the cavity cut along the diameter of the ring body comprises a contraction section which gradually decreases toward the outer ring of the ring body and is symmetrical up and down, and when the locking mechanism is locked, the edge of the flange abuts against the side wall of the cavity, and the flange is subjected to the inward pressure of the ring body.

[0006] In the flange clamping mechanism described in the present application, the ring body is composed of several clamping parts bolted together. The bolting form allows the ring body to be unfolded so that it can be opened from the side and sleeved on the docking flange. Since the size and length of the air duct are generally not small, it is inconvenient to send the clamping mechanism from the end of the pipeline to the flange. The bolting plus opening and closing method is convenient for use; since each clamping part is bolted and connected, there are no loose parts, which is convenient for use and storage; since a cavity is provided on the side wall of the inner ring of the flange ring body, the cross section of the cavity cut along the diameter of the ring body gradually decreases toward the outer ring of the ring body and is symmetrical up and down, when the ring body applies pressure inward to the flange, the flange will be squeezed in the up and down directions at the same time. The flange clamping mechanism provided by the present application can apply pressure to the flange evenly and from multiple directions. Even if the air duct is shaken by external force, the flange clamping mechanism has a large force application area and multiple directions, and can deform to a certain extent with the flange. The connection is stable and not easy to lose airtightness, and it is more durable.

[0007] Preferably, the length of the locking mechanism can be adjusted and locked. Since the flange has a processing error, the length of the locking mechanism can be adjusted so that the circumference of the flange clamping mechanism can be adjusted by adjusting the locking mechanism, covering the processing error, and having a certain degree of versatility when the calibers are not much different. When the locking mechanism is shortened, the flange clamping mechanism will also automatically align to reduce the difficulty of flange docking.

[0008] Preferably, the locking mechanism includes a bolt and two connecting members with through holes respectively connected to the two clamping members, the tail of the bolt passes through the through holes on the two connecting members and then cooperates with a nut, the nut is screwed in on the bolt to shorten the distance between the two clamping members, or the nut is screwed out on the bolt to lengthen the distance between the two clamping members. Compared with other rigid connection methods, this connection method causes less damage to the structure due to shaking, and the bolt can be retightened after the external force causing the shaking is removed.

[0009] Preferably, the locking mechanism includes a bolt and two ear plates with internal threads respectively connected to the two clamping members, the internal thread holes of the two ear plates are parallel to the tangent of the ring body at the midpoint of the two ear plates, the thread on the bolt matches the internal thread on the two ear plates, and the bolt passes through the two ear plates to connect the two clamping mechanisms. In this structure, a combination of bolts and ear plates is used as a locking mechanism, and hand-tightened bolts can also be used. Hand-tightening bolts are more convenient and can be adjusted and locked by hand. When the air duct is shaken by external force, the bolts may shake and become loose. Compared with other rigid connection methods, this connection method causes less damage to the structure due to shaking. After the external force causing the shaking is removed, the bolts can be retightened.

[0010] Preferably, the cavity is transitioned with a curved surface at the smallest part of the cross section cut along the diameter of the ring body. This structure allows a relatively thin flange to be clamped by the flange clamping mechanism and have a certain self-recovery ability. If the cross section of the cavity is transitioned with a straight surface, when the flange is relatively thin, it may get stuck at the junction of the upper and lower walls and be difficult to return to the original position. However, when the transition is made with a curved surface, there is no jamming and it can recover naturally with the shaking of the pipeline.

[0011] Preferably, the cross section of the cavity cut along the diameter of the ring body also includes a parallel section connected to the contraction section. In this structure, the ring body portion corresponding to the parallel section plays a limiting role. After the flange clamping mechanism is buckled on the flange, the flange may tilt relative to the flange clamping mechanism when shaking occurs, and the flange is prevented from falling out by limiting the ring body portion corresponding to the parallel section.

[0012] Preferably, the ring body is formed by bolting two clamping members, the main parts of the two clamping members are of the same structure, one end is connected by the locking mechanism, and the other end is connected by two ear plates respectively connected to the two clamping members and a rotating shaft welded between the two ear plates. In this structure, there are only two clamping members and the main parts of the two clamping members are the same, which is equivalent to the simplest structure and the opening where the two ring bodies are separated is the largest, and the flange can be easily put on after opening, and the structure is symmetrical and the force is evenly distributed.

[0013] Preferably, the axis of the rotating shaft is located outside the ring body, and the setting direction is perpendicular to the bolt. In this structure, the hinge shaft is set outside the ring body and perpendicular to the bolt, and the bolt is located outside the ring body. This setting makes the distance from the center of the ring to the axis of the rotating shaft and the distance from the center of the ring to the bolt as equal as possible, and the force on the ring body remains symmetrical when the locking mechanism is tightened.

[0014] Preferably, the side wall of the cavity is coated with wear-resistant rubber. The wear-resistant rubber is provided to increase the friction between the flange and the ring body and provide buffering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other purposes, features and advantages of the present invention will become more apparent through a more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals in all the accompanying drawings indicate the same parts, and the drawings are not intentionally scaled to the actual size, but the focus is on illustrating the subject matter of the present invention.

[0016] Figure 1 A top view of a preferred embodiment;

[0017] Figure 2 It is a front view of a preferred embodiment;

[0018] Figure 3 It is a schematic diagram (cross-sectional view) of the installation structure of a preferred embodiment.

[0019] In the figure: a clamping member 1, a locking mechanism 2, a rotating shaft 3, an air duct 4, and a flange 41. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0021] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and combined with it as a whole, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used in this article are only for the purpose of illustrating the present utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] refer to Figure 1-Figure 3 The flange clamping mechanism described in the utility model includes a ring body composed of a plurality of clamping members 1 bolted together, wherein an opening is provided between two clamping members 1, and a locking mechanism 2 is provided at the opening. By releasing the locking mechanism 2, the ring body can be opened from the opening to be buckled on the docking flange 41; a cavity is provided on the side wall of the inner ring of the ring body, and the cross-section of the cavity cut along the diameter of the ring body includes a contraction section which gradually shrinks toward the outer ring of the ring body and is symmetrical up and down. When the locking mechanism 2 is locked, the edge of the flange 41 abuts against the side wall of the cavity, and the flange 41 is subjected to the inward pressure of the ring body.

[0024] refer to Figure 1 and Figure 2 In a preferred embodiment, the length of the locking mechanism 2 can be adjusted and locked. Since the flange 41 has a processing error, the length of the locking mechanism 2 can be adjusted, and the circumference of the flange clamping mechanism can be adjusted by adjusting the locking mechanism 2 to cover the processing error. When the caliber difference is not large, it can also have a certain degree of versatility. When shortening the locking mechanism 2, the flange clamping mechanism will also automatically align to reduce the difficulty of flange 41 docking.

[0025] refer to Figure 1 and Figure 2 In a preferred embodiment, the locking mechanism 2 includes a bolt and two connecting members with through holes respectively connected to the two clamping members 1. The tail of the bolt passes through the through holes on the two connecting members and then cooperates with a nut. The nut is screwed in on the bolt to shorten the distance between the two clamping members 1, or the nut is screwed out on the bolt to lengthen the distance between the two clamping members 1. Compared with other rigid connection methods, the shaking under this connection method causes less damage to the structure, and the bolt can be retightened after the external force causing the shaking is released.

[0026] In another preferred embodiment, the locking mechanism 2 includes a bolt and two ear plates with internal threads respectively connected to the two clamping members 1. The internal thread holes of the two ear plates are parallel to the tangent of the ring body at the midpoint of the two ear plates. The threads on the bolts match the internal threads on the two ear plates. The bolts pass through the two ear plates to connect the two clamping mechanisms. In this structure, a combination of bolts and ear plates is used as the locking mechanism 2. Hand-tightened bolts can also be used. Hand-tightening bolts are simpler and can be adjusted and locked by hand. When the air duct 4 is shaken by external force, the bolts may shake and become loose. Compared with other rigid connection methods, this connection method causes less damage to the structure due to shaking. After the external force causing the shaking is removed, the bolts can be retightened.

[0027] refer to Figure 3 The cavity is transitioned with a curved surface at the smallest section cut along the diameter of the ring body. This structure allows the relatively thin flange 41 to be clamped by the flange clamping mechanism and have a certain self-recovery ability. If the cross section of the cavity adopts a straight surface transition, when the flange 41 is relatively thin, it may get stuck at the junction of the upper and lower walls and be difficult to return to the original position. However, when the transition is made with a curved surface, there is no jamming and it can recover naturally with the shaking of the pipeline.

[0028] refer to Figure 3 The cross section of the cavity cut along the diameter of the ring body also includes a parallel section connected to the contraction section. In this structure, the ring body portion corresponding to the parallel section plays a limiting role. After the flange clamping mechanism is buckled on the flange 41, the flange 41 may tilt relative to the flange clamping mechanism when shaking occurs. The ring body portion corresponding to the parallel section is used for limiting to prevent the flange 41 from falling out.

[0029] refer to Figure 1 and Figure 2 In a preferred embodiment, the ring body is formed by bolting two clamping members 1, the main parts of the two clamping members 1 have the same structure, one end is connected by the locking mechanism 2, and the other end is connected by two ear plates respectively connected to the two clamping members 1 and a rotating shaft 3 welded between the two ear plates. In this structure, there are only two clamping members 1 and the main parts of the two clamping members 1 are the same, which is equivalent to the simplest structure and the opening where the two ring bodies are separated is the largest, and the flange 41 can be easily put on after opening, and the structure is symmetrical and evenly stressed.

[0030] refer to Figure 1 and Figure 2In a preferred embodiment, the axis of the rotating shaft 3 is located outside the ring body, and the setting direction is perpendicular to the bolt. In this structure, the axis of the rotating shaft 3 is set outside the ring body and perpendicular to the bolt, and the bolt is located outside the ring body. This setting makes the distance from the center of the ring to the axis of the rotating shaft and the distance from the center of the ring to the bolt as equal as possible, and the force on the ring body remains symmetrical when the locking mechanism is tightened.

[0031] refer to Figure 3 In a preferred embodiment, the side wall of the cavity is coated with wear-resistant rubber. The wear-resistant rubber is provided to increase the friction between the flange 41 and the ring body and provide buffering.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0034] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A flange clamping mechanism, characterized in that: The invention comprises a ring body composed of a plurality of clamping members (1) bolted together, wherein an opening is arranged between two clamping members (1), and a locking mechanism (2) is arranged at the opening. By releasing the locking mechanism (2), the ring body can be opened from the opening to be fastened on a butted flange (41); a cavity is arranged on the side wall of the inner ring of the ring body, and the cross section of the cavity cut along the diameter of the ring body comprises a contraction section which gradually shrinks toward the outer ring of the ring body and is symmetrical up and down. When the locking mechanism (2) is locked, the edge of the flange (41) abuts against the side wall of the cavity, and the flange (41) is subjected to the inward pressure of the ring body.

2. The flange clamping mechanism according to claim 1, characterized in that: The length of the locking mechanism (2) can be adjusted and locked.

3. The flange clamping mechanism according to claim 2, characterized in that: The locking mechanism (2) comprises a bolt and two connecting members provided with through holes respectively connected to the two clamping members (1); the tail of the bolt passes through the through holes on the two connecting members and cooperates with a nut; the nut is screwed in on the bolt to shorten the distance between the two clamping members (1); or the nut is screwed out on the bolt to lengthen the distance between the two clamping members (1).

4. The flange clamping mechanism according to claim 2, characterized in that: The locking mechanism (2) comprises a bolt and two ear plates provided with internal threads respectively connected to the two clamping members (1), the internal thread holes of the two ear plates being parallel to the tangent of the ring body at the midpoint of the two ear plates, the thread on the bolt matches the internal thread on the two ear plates, and the bolt passes through the two ear plates to connect the two clamping mechanisms.

5. The flange clamping mechanism according to any one of claims 1 to 4, characterized in that: The smallest part of the cross section of the cavity cut along the diameter of the ring body is transitioned with a curved surface.

6. The flange clamping mechanism according to any one of claims 1 to 4, characterized in that: The cross section of the mold cavity cut along the diameter of the ring body also includes a parallel section connected to the contraction section.

7. The flange clamping mechanism according to claim 3 or 4, characterized in that: The ring body is composed of two clamping members (1) bolted together, the main parts of the two clamping members (1) have the same structure, one end is connected by the locking mechanism (2), and the other end is connected by two ear plates respectively connected to the two clamping members (1) and a rotating shaft (3) welded between the two ear plates.

8. The flange clamping mechanism according to claim 7, characterized in that: The axis of the rotating shaft (3) is located outside the ring body, and is arranged in a direction perpendicular to the bolt.

9. The flange clamping mechanism according to any one of claims 1 to 4, characterized in that: The side wall of the cavity is coated with wear-resistant rubber.

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