Worm clamp with enclasping structure

Abstract

The utility model provides a worm clamp with an enclasping structure, which relates to the technical field of aviation pipeline connection and comprises a worm, a clamp seat and a clamp belt. The strap is of a circular ring structure, and the inner side of the strap is provided with a bulged turbine groove which is meshed with turbine threads of the worm to achieve tightening. The hoop base is formed at a time through cold extrusion of a seamless steel pipe, a holding structure and a pressing buckle groove are cut out, and the hoop base is in closed connection with the hoop belt. The tail end of the worm is provided with an enclasping receding groove which is matched with the hoop base through a spiral locking structure, and loosening is prevented. The structure of the worm, the hoop seat and the hoop belt is designed according to the worm and gear meshing principle, the hoop seat is provided with the holding structure, and the hoop has the advantages of being high in strength, resistant to vibration, long in service life and the like and is suitable for harsh environments such as aviation environment control pipelines and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation pipeline connection technical field, specifically, especially, a kind of worm hoop with holding structure. BACKGROUND

[0002] Worm hoop is widely used in aviation field ring control pipeline and liquid pipeline connection, and its core function is to realize the fastening and sealing of pipeline by worm gear engagement principle.The traditional worm hoop mainly adopts two structure forms: sheet metal forming hoop seat: close hoop band and hoop seat by welding process, but welding process is easy to produce residual stress, resulting in the decrease of the mechanical strength of the hoop, and cracking or deformation is easily caused by stress concentration in long-term use;Bar processing hoop seat: hoop seat structure is cut in round bar, and the material utilization rate is less than 40%, and the processing cost is high, and the corrosion resistance of the hoop after bar processing is insufficient.

[0003] In addition, the traditional holding structure relies on welding or complex machining to realize closure, which leads to poor structural stability, fatigue failure of welded joints and easy loosening at the closure;Material and process are not matched, ordinary stainless steel has insufficient corrosion resistance, and the processing technology aggravates material loss, so the cost is high;Anti-loosening ability is weak: the fixing mode of worm and hoop seat is single, lacks limiting design, and displacement is easily occurred under vibration environment.

[0004] Therefore, a worm hoop with high material utilization rate and reliable holding structure is needed, which solves the core technical problems of welding stress, high cost and structure loosening in traditional technology by optimizing material selection, forming process and anti-loosening design. UTILITY MODEL CONTENT

[0005] According to the above technical problems, a worm hoop with holding structure is provided, which solves the core technical problems of welding stress, high cost and structure loosening in traditional technology by designing the structure of worm, hoop seat and hoop band using worm gear engagement principle, and setting holding structure on the hoop seat.

[0006] To achieve the above purpose, the utility model provides a worm hoop with holding structure, comprising: worm, hoop seat, hoop band;

[0007] The hoop band is in the form of a circular ring, with turbine threads on the inner side, and is connected to the hoop seat by a groove clamping structure to form a closed circular ring;

[0008] The worm and the turbine threads of the hoop band engage, and the end of the worm is provided with a holding displacement slot matched with the hoop seat;

[0009] The hoop seat is provided with a holding structure, and the worm and the hoop seat are tightly pressed after being held by the holding structure without displacement loosening.

[0010] The hoop seat is formed by extrusion of seamless steel pipe and cutting of a pressing buckle groove, and is closed connected with the recess clamping structure of the hoop belt.

[0011] Further, the hoop seat upper clamping structure is matched with the worm upper clamping displacement slot.

[0012] Further, the hoop seat is provided with a clamping buckle matched with the worm upper clamping displacement slot.

[0013] Further, the worm and the hoop seat clamping hook clamping structure is designed as a spiral structure, and the two-way locking function is realized by cooperating with the limiting groove.

[0014] Compared with the prior art, the utility model has the following advantages due to the adoption of the above technical scheme.

[0015] 1. The worm clamp provided by the utility model has a clamping structure, the worm end is designed with a limiting groove, the clamping hook clamping structure of the hoop seat is formed with two-way locking, the spiral engagement cooperates with the limiting groove, displacement or loosening caused by vibration or pressure is effectively avoided, and the structural stability of the clamp in a dynamic environment is significantly improved.

[0016] 2. The worm clamp provided by the utility model has a clamping structure, the hoop seat is formed by stamping of seamless steel pipe and cutting of a clamping buckle, the traditional welding or bar processing technology is replaced, welding residual stress is completely eliminated, fatigue cracking caused by stress concentration is avoided, the closed structure is more uniform and compact, and the overall mechanical strength is improved.

[0017] 3. The worm clamp provided by the utility model has a clamping structure, the hoop belt is once formed into a drum-up turbine groove structure by a die, the worm rolling thread is formed with high-precision engagement, the contact area and friction force are greatly increased, the stress is uniform during the tightening process, local deformation or slipping is avoided, and the fastening reliability is enhanced.

[0018] Based on the above reasons, the utility model can be widely promoted in the field of aviation pipeline connection technology. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Fig. 1 It is a worm clamp structure with a clamping structure according to the utility model;

[0021] Fig. 2 is a side view of the worm clamp with the holding structure according to the utility model;

[0022] Fig. 3 is a holding position schematic view of the worm clamp with the holding structure according to the utility model;

[0023] Fig. 4 is a hoop seat and hoop belt connecting structure schematic view of the worm clamp with the holding structure according to the utility model;

[0024] Fig. 5 is a worm schematic view of the worm clamp with the holding structure according to the utility model;

[0025] Fig. 6 is a hoop seat schematic view of the worm clamp with the holding structure according to the utility model;

[0026] Fig. 7 is a hoop belt schematic view of the worm clamp with the holding structure according to the utility model.

[0027] In the figure: 1, worm; 2, hoop seat; 3, hoop belt; 11, holding displacement slot; 21, holding structure; 22, pressing buckle groove; 31, recess clamping structure. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments and features of the embodiments in the utility model can be combined with each other without conflict. The utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0030] It should be noted that the terms used herein are only for describing specific embodiments, not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or their combination.

[0031] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the Examples are not intended to limit the scope of the present application unless otherwise specified. Also, it is to be understood that the dimensions of the various parts shown in the drawings are not drawn to scale for the sake of convenience in illustration. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail because such techniques, methods, and apparatus are considered to be part of the patent specification. In all examples shown and discussed herein, any reference to a specific value is to be interpreted as merely an example, and not a limitation. Thus, other examples of the example embodiments can have different values. It is to be noted that like numbers and letters refer to like elements throughout the several views of the drawings and, as such, no further discussion with regard thereto is deemed necessary.

[0032] In the description of the present application, it is to be understood that the orientation or positional words such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "perpendicular", "horizontal", and "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. The orientation words "inner" and "outer" refer to the inner and outer relative to the contour of each component.

[0033] For the convenience of description, spatial relative terms such as "above", "upper", "on", "top", "bottom", and the like can be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the example term "above" can include both the "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0034] In addition, it should be noted that the use of the words "first", "second", and the like to describe various components is merely for the convenience of distinguishing the corresponding components, and the above words do not have special meanings unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0035] Embodiment 1

[0036] As Figs. 1 to 7 shown, the utility model provides a worm hoop with embrace structure, include: worm 1, hoop seat 2, hoop band 3,

[0037] Worm 1 is shaped worm main part through mechanical processing, and the end processing embrace let -go groove 11, then adopts the high -strength turbine thread on worm surface to form the rolling process, ensures and the turbine groove of hoop band 3 tight bite.

[0038] Hoop seat 2 selects seamless steel tube as raw material, and the hoop seat main body is formed by cold extrusion process once, to avoid welding stress.

[0039] Hoop band 3 adopts die stamping process to process stainless steel plate into circular hoop band, and the inside is stamped into the drum -up turbine groove (groove clamping structure 31), to ensure the high -strength cooperation of worm thread.

[0040] Further, the groove clamping structure 31 of the hoop band 3 is a drum -up turbine groove, which is tightly matched with the turbine thread of the worm 1.

[0041] Further, the embrace structure 21 on the hoop seat 2 is matched with the embrace let -go groove 11 on the worm 1.

[0042] Further, the embrace of the worm 1 and the hoop seat 2 is a spiral structure design, which realizes the bidirectional locking function by cooperating with the limiting groove.

[0043] Embodiment 2

[0044] Hoop assembly process:

[0045] The groove clamping structure 31 of the hoop band 3 is aligned with the pressure buckle groove of the hoop seat 2, and the closed ring is formed by mechanical pressure.

[0046] Insert the worm 1 into the turbine groove of the hoop band 3, and rotate the worm to make the thread bite the turbine groove.

[0047] The embrace let -go groove 11 at the end of the worm is pressed by the embrace structure 21 of the hoop seat 2 through the spiral structure, to realize bidirectional locking and ensure no loosening.

[0048] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application examples.

Claims

1. A worm gear clamp with a clamping structure, characterized in that, Include: The worm (1), hoop seat (2), hoop belt (3); The hoop belt (3) is in the form of a circular ring structure, which is provided with turbine threads on the inner side and connected with the hoop seat (2) to form a closed circular ring through the groove clamping structure (31); The worm (1) is engaged with the turbine threads of the hoop belt (3), and the end of the worm (1) is provided with a clamping displacement slot (11) matched with the hoop seat (2); The hoop seat (2) is provided with a clamping structure (21), and the worm (1) and the hoop seat (2) are clamped and pressed after the clamping structure (21) is clamped, without displacement and loosening; The hoop seat (2) is formed by extrusion of seamless steel pipe and cutting of pressure buckle groove, and is connected with the groove clamping structure (31) of the hoop belt (3) to form closed connection.

2. The worm clamp with a holding structure according to claim 1, characterized in that, The groove clamping structure (31) of the hoop belt (3) is a bulging turbine groove, which is tightly matched with the turbine threads of the worm (1).

3. The worm clamp with a holding structure according to claim 1, characterized in that, The clamping structure (21) on the hoop seat (2) is matched with the clamping displacement slot (11) on the worm (1).

4. The worm clamp with a holding structure according to claim 1, characterized in that, The clamping form of the worm (1) and the hoop seat (2) is a spiral structure design, which realizes the bidirectional locking function by cooperating with the limiting groove.

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