阅读说明：本技术 一种通用管道连接套结构 (Universal pipeline connecting sleeve structure ) 是由 吴益军 于 2021-08-06 设计创作，主要内容包括：本发明涉及管道连接技术领域,具体为一种通用管道连接套结构,其结构简单,成本低,其包括连接套本体,其特征在于,所述连接套本体两端内壁分别安装有至少两个弹性自锁片,所述弹性自锁片包括与所述连接套本体连接的连接片、与管道外壁接触的锁紧片、连接所述连接片和所述锁紧片的中间片,所述弹性自锁片呈Z形,所述弹性自锁片处于自然状态时所述锁紧片与所述连接套本体的轴向呈一定夹角且所述锁紧片的锁紧端面朝向所述连接套本体的开口,所述锁紧端面上设有锯齿,所述弹性自锁片处于自然状态时所述中间片与所述锁紧片连接处位于所述连接套本体内壁的内侧,所述连接套本体内壁设置有密封圈。(The invention relates to the technical field of pipeline connection, in particular to a universal pipeline connecting sleeve structure which is simple in structure and low in cost and comprises a connecting sleeve body, and is characterized in that at least two elastic self-locking plates are respectively arranged on the inner walls of two ends of the connecting sleeve body, each elastic self-locking plate comprises a connecting sheet connected with the connecting sleeve body, a locking sheet contacted with the outer wall of a pipeline, and a middle sheet connected with the connecting sheet and the locking sheet, each elastic self-locking plate is Z-shaped, when the elastic self-locking plates are in a natural state, the locking sheets form a certain included angle with the axial direction of the connecting sleeve body, the locking end surfaces of the locking sheets face the opening of the connecting sleeve body, sawteeth are arranged on the locking end surfaces, when the elastic self-locking plates are in a natural state, the connecting positions of the middle sheets and the locking sheets are positioned on the inner side of the inner wall of the connecting sleeve body, the inner wall of the connecting sleeve body is provided with a sealing ring.)

1. The utility model provides a general pipeline connecting sleeve structure, its includes the adapter sleeve body, its characterized in that, adapter sleeve body both ends inner wall is installed two at least elasticity respectively from the locking plate, elasticity include from the locking plate with this body coupling of adapter sleeve, with the stay of pipeline outer wall contact, be connected the connection piece with the intermediate lamella of stay, elasticity is Z shape from the locking plate, when elasticity is in natural state from the locking plate the stay with the axial of adapter sleeve body is certain contained angle just the locking terminal surface orientation of stay the opening of adapter sleeve body, be equipped with the sawtooth on the locking terminal surface, when elasticity is in natural state from the locking plate the intermediate lamella with the stay junction is located the inboard of adapter sleeve body inner wall, adapter sleeve body inner wall is provided with the sealing washer.

2. A universal pipe coupling sleeve structure as recited in claim 1, wherein said resilient self-locking tab comprises an even number of said tabs arranged uniformly.

3. The universal pipe connecting sleeve structure according to claim 1, wherein when the elastic self-locking piece is in a natural state, an included angle between the middle piece and the connecting piece is 90 °.

4. The universal pipe connecting sleeve structure according to claim 1, wherein a boss is disposed at a middle position of an inner wall of the connecting sleeve body.

5. A universal pipe coupling sleeve structure as recited in claim 1, wherein said serrations are angled sharp teeth.

6. The universal pipe connecting sleeve structure according to claim 1, wherein the connecting sleeve body is a non-metal connecting sleeve, the elastic self-locking piece is pre-embedded in the non-metal connecting sleeve during injection molding and integrally formed, a notch is formed in the inner wall of the connecting sleeve body, the elastic self-locking piece is arranged in the notch, and at least part of the locking piece is exposed out of the notch.

7. The universal pipe connecting sleeve structure according to claim 1, wherein the connecting sleeve body is a metal connecting sleeve, a mounting ring is welded to an opening of the outer wall of the metal connecting sleeve and is provided with a through hole, the elastic self-locking piece is welded to the inner side of the mounting ring, and the locking piece of the elastic self-locking piece passes through the through hole and extends into the metal connecting sleeve.

Technical Field

The invention relates to the technical field of pipeline connection, in particular to a universal pipeline connecting sleeve structure.

Background

The occasion of pipeline application is very extensive, all can use in the transport of water, oil etc., and the pipeline can not be one infinitely long of doing, all need connect many pipelines in the in-service use, and the connected mode of pipeline has a lot, and in the connection trade of water pipe, the present commonly used inserts auto-lock jump ring formula adapter sleeve, utilizes jump ring elasticity to promote movable fastener and pipeline interlock to be connected, and its structure is complicated, the cost of manufacture is high.

Disclosure of Invention

In order to solve the problems of complex connecting structure and high manufacturing cost of the existing water pipe, the invention provides a universal pipe connecting sleeve structure which is simple in structure and low in cost.

The technical scheme is as follows: the utility model provides a general pipeline connecting sleeve structure, its includes the adapter sleeve body, its characterized in that, adapter sleeve body both ends inner wall is installed two at least elasticity respectively from the locking plate, elasticity include from the locking plate with this body coupling of adapter sleeve, with the stay of pipeline outer wall contact, be connected the connection piece with the intermediate lamella of stay, elasticity is Z shape from the locking plate, when elasticity is in natural state from the locking plate the stay with the axial of adapter sleeve body is certain contained angle just the locking terminal surface orientation of stay the opening of adapter sleeve body, be equipped with the sawtooth on the locking terminal surface, when elasticity is in natural state from the locking plate the intermediate lamella with the stay junction is located the inboard of adapter sleeve body inner wall, adapter sleeve body inner wall is provided with the sealing washer.

The elastic self-locking piece is further characterized by comprising an even number of elastic self-locking pieces which are uniformly arranged;

when the elastic self-locking plate is in a natural state, the included angle between the middle plate and the connecting plate is 90 degrees;

a boss is arranged at the middle position of the inner wall of the connecting sleeve body;

the saw teeth are oblique sharp teeth;

the connecting sleeve body is a non-metal connecting sleeve, the elastic self-locking plate is pre-embedded in the non-metal connecting sleeve during injection molding and integrally formed, a notch is formed in the inner wall of the connecting sleeve body, the elastic self-locking plate is arranged in the notch, and at least part of the locking plate is exposed out of the notch;

the connecting sleeve body is a metal connecting sleeve, the outer wall of the metal connecting sleeve is welded with a mounting ring at an opening and is provided with a through hole, the elastic self-locking piece is welded on the inner side of the mounting ring, and the locking piece of the elastic self-locking piece penetrates through the through hole and stretches into the metal connecting sleeve.

After the connecting sleeve structure is adopted, the connecting sleeve structure only consists of the connecting sleeve body, the elastic self-locking plate and the sealing ring, the structure is simple, after the pipeline is inserted into the connecting sleeve body, the locking is realized by the friction force between the sawteeth of the locking plate and the outer wall of the pipeline, and the manufacturing cost is low.

Drawings

Fig. 1 is a schematic structural view of the connecting sleeve body when the connecting sleeve body is a non-metal connecting sleeve;

FIG. 2 is a side view of two and four spring self locking tabs;

FIG. 3 is a front view of the elastic self-locking plate in two states;

FIG. 4 is a schematic view of a contact surface serration;

fig. 5 is a schematic structural view when the connecting sleeve body is a metal connecting sleeve;

fig. 6 is a schematic view of mechanical analysis.

Detailed Description

Referring to fig. 1 to 5, a general pipeline connecting sleeve structure comprises a connecting sleeve body 1, wherein an even number of elastic self-locking pieces 2, generally two, four or six, are uniformly arranged on the inner walls of two ends of the connecting sleeve body 1 respectively, and are used for ensuring the force balance of any two elastic self-locking pieces 2 which are positioned at two ends of the diameter and are symmetrical, the elastic self-locking pieces 2 comprise connecting pieces 2-1 connected with the connecting sleeve body 1, locking pieces 2-3 contacted with the outer wall of a pipeline 3, and middle pieces 2-2 connected with the connecting pieces 2-1 and the locking pieces 2-3, the elastic self-locking pieces 2 are Z-shaped, when the elastic self-locking pieces 2 are in a natural state, the locking pieces 2-3 form a certain included angle with the axial direction of the connecting sleeve body 1, the locking end surfaces of the locking pieces 2-3 face the opening of the connecting sleeve body 1, and are provided with saw teeth 4, when the elastic self-locking plate 2 is in a natural state, the joint of the middle plate 2-2 and the locking plate 2-3 is positioned on the inner side of the inner wall of the connecting sleeve body 1, and the inner wall of the connecting sleeve body 1 is provided with the sealing ring 5 to play a role in sealing.

When the elastic self-locking plate 2 is in a natural state, the included angle between the middle plate 2-2 and the connecting plate 2-1 is 90 degrees. A mechanical analysis is made below for the scheme of the present application, and in particular see fig. 6:

the length of the middle sheet 2-2 is set as L, the joint of the middle sheet 2-2 and the locking sheet 2-3 is set as A, and the A is in the natural shape of the elastic self-locking sheet 2The height difference between the state and the position of the pipeline inserted state is delta, the axial displacement is delta L, the distance from the connecting sheet 2-1 to the outer wall of the pipeline after the pipeline is inserted is L', the elastic self-locking sheet 2 is extruded and deformed, A receives the reaction force N of the pipeline, and then delta L²=L²-（L-δ）²=2δL-δ²Wherein the height difference delta is the radial offset generated at the position A after the pipeline 3 is inserted, the value is between 0.2mm and 1mm according to the industry standard, in addition, the friction coefficient between the outer wall of the pipeline 3 and the elastic self-locking plate 2 is set as u, in order to achieve self-locking and torque calculation, the minimum sliding friction coefficient u required by realizing self-locking is the minimum value of u, N, L' > N, delta L, u_minThe elastic self-locking piece is larger than delta L/L ', so that L ' is larger, when the elastic self-locking piece is in a natural state, the middle piece and the connecting piece are in a vertical state, and after deformation, the L ' can be maximized under the condition that delta is fixed, so that the vertical state is the best choice. When L is 20mm and delta is 0.7mm at most, u_minAnd when the contact surface is larger than 0.27, self-locking can be realized, and the requirement of the contact surface is reduced.

The middle position of the inner wall of the connecting sleeve body 1 is provided with a boss 9 for positioning when the pipeline 3 is inserted.

The sawtooth 4 is concrete for the slant pointed tooth, and the unilateral increases elasticity from the frictional force of locking plate 2 and pipeline 3, does not influence the pipeline 3 and inserts the installation and can prevent to skid between elasticity from locking plate 2 and pipeline 3 when outwards drawing again.

When adapter sleeve body 1 is the nonmetal adapter sleeve, elasticity is pre-buried when moulding plastics from locking plate 2 and is connected cover integrated into one piece in nonmetal, and breach 6 has been seted up to adapter sleeve body 1 inner wall, and elasticity is arranged in breach 6 from locking plate 2, and elasticity stay 2 is at least partly exposed in breach 6, can be inserted when pipeline 3 and can hug closely pipeline 3 outer walls after being extruded.

As shown in fig. 5, when the connecting sleeve body 1 is a metal connecting sleeve, the mounting ring 7 is welded at the opening of the outer wall of the metal connecting sleeve and is provided with a through hole 8, the elastic self-locking piece 2 is welded at the inner side of the mounting ring 7, and the locking piece 2-3 of the elastic self-locking piece 2 penetrates through the through hole 8 and extends into the metal connecting sleeve, so that the outer wall of the pipeline 3 can be tightly attached to the outer wall of the pipeline after being extruded when the pipeline 3 is inserted.

In the actual installation, when pipeline 3 inserts, pipeline 3 promotes elasticity from locking plate 2 and twists reverse inwards and laminate with pipeline 3, and after pipeline 3 installed in place, when outwards drawing pipeline 3, elasticity from locking plate 2 is twisted by pipeline 3 pulling outwards, presses to pipeline 3 until locking completely.