CN204345116U - The insert structure of excircle cloth tooth - Google Patents
The insert structure of excircle cloth tooth Download PDFInfo
- Publication number
- CN204345116U CN204345116U CN201420766302.5U CN201420766302U CN204345116U CN 204345116 U CN204345116 U CN 204345116U CN 201420766302 U CN201420766302 U CN 201420766302U CN 204345116 U CN204345116 U CN 204345116U
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- metal pipe
- pipe element
- double wedge
- periphery
- plane
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Abstract
An insert structure for excircle cloth tooth, comprise a plastic body and a metal pipe element, plastic body is enclosed in the periphery of metal pipe element, and the periphery of metal pipe element is provided with a plurality of double wedge, and any one double wedge is all chimeric with plastic body.Be arranged in the antiturning pitch being arranged in end face in the double wedge of periphery and prior art to compare, the double wedge of metal pipe element periphery is greater than the distance of antiturning pitch to metal pipe element central axis of metal pipe element end face to the distance of metal pipe element central axis, the therefore obvious increase of the arm of force of its opposing torsional interaction; Meanwhile, the periphery of metal pipe element can arrange the double wedge of the above number of two circles vertically, considerably increase the number of double wedge, anti-rotation effect can be played more reliably, thus strengthen anti-twisting property.Double wedge, along with radial embedding plastic body, can prevent axial coming off.Double wedge is arranged on metal pipe element periphery, can reserve more space in the axis of metal pipe element, is convenient to arrange leakage preventing structure.
Description
Technical field:
The utility model relates to mechanical field, particularly relates to pipe joint, particularly the pipe joint of plastic cement and metal pipe element compound, particularly a kind of insert structure of excircle cloth tooth.
Background technique:
The pipe joint of plastic cement and metal pipe element compound is widely used in feedwater piping, wherein, plastic cement is enclosed in the outside of metal pipe element by the mode of injection moulding, there is in metal pipe element the feature for being mechanically connected, as screw thread, to make up, plastic material creep-resistant property is poor, be threaded insecure defect.Metal pipe element has requirement that is antitorque, anticreep, if the occasion of carrying for fluid, also has the requirement of leakage proof.In prior art, in order to prevent metal pipe element and plastic cement when circumferential stressed relatively rotate, in the end face that metal pipe element is combined with plastic cement, be circumferentially provided with a plurality of antiturning pitch.But, the limited use of above-mentioned antiturning pitch opposing moment of torsion, and the Limited Number of the antiturning pitch that can arrange in end face, therefore, said structure can not bear larger moment of torsion.
Summary of the invention:
The purpose of this utility model is the insert structure providing a kind of excircle cloth tooth, and the insert structure of described this excircle cloth tooth will solve metal pipe element and plastic cement in prior art can not bear technical problem compared with high pulling torque in conjunction with the antiturning pitch of end face.
The insert structure of this excircle cloth tooth of the present utility model, comprise a plastic body and a metal pipe element, described plastic body is enclosed in the periphery of described metal pipe element, wherein, the periphery of described metal pipe element is provided with a plurality of double wedge, and the plastic body of the double wedge described in any one all with described is chimeric.
Further, described double wedge is distributed in first plane, and the first described plane orthogonal is in the axis of metal pipe element.
Further, described double wedge is distributed in first plane and at least one second plane, the first described plane and the second plane are all perpendicular to the axis of metal pipe element, first plane and the second plane are along the axially-aligned of metal pipe element, and the number being arranged in the double wedge of the first plane and any one the second plane is two or more separately.
Further, the periphery of metal pipe element is cylndrical surface, and described double wedge is circumferentially uniformly distributed.
Further, the periphery of metal pipe element is cylndrical surface, and described double wedge is circumferentially uniformly distributed separately in the first plane and any one second plane.
Further, screw thread is provided with in described metal pipe element.
Working principle of the present utility model is: a plurality of double wedge is arranged on the periphery of metal pipe element, when the diameter of metal pipe element differs less than an order of magnitude with wall thickness dimension, be arranged in the antiturning pitch being arranged in end face in the double wedge of periphery and prior art to compare, the double wedge of metal pipe element periphery is greater than the distance of antiturning pitch to metal pipe element central axis of metal pipe element end face to the distance of metal pipe element central axis, the therefore obvious increase of the arm of force of its opposing torsional interaction; Meanwhile, the periphery of metal pipe element can arrange the double wedge of the above number of two circles vertically, considerably increase the number of double wedge, anti-rotation effect can be played more reliably, thus strengthen anti-twisting property.Double wedge, along with radial embedding plastic body, can prevent axial coming off.Double wedge is arranged on metal pipe element periphery, can reserve more space in the axis of metal pipe element, is convenient to arrange leakage preventing structure.
The utility model is compared with prior art, and its effect is actively with obvious.A plurality of double wedge is being arranged on the periphery of metal pipe element by the utility model, when the diameter of metal pipe element differs less than an order of magnitude with wall thickness dimension, be arranged in the antiturning pitch being arranged in end face in the double wedge of periphery and prior art to compare, the double wedge of metal pipe element periphery is greater than the distance of antiturning pitch to metal pipe element central axis of metal pipe element end face to the distance of metal pipe element central axis, the therefore obvious increase of the arm of force of its opposing torsional interaction; Meanwhile, the periphery of metal pipe element can arrange the double wedge of the above number of two circles vertically, considerably increase the number of double wedge, anti-rotation effect can be played more reliably, thus strengthen anti-twisting property.Double wedge, along with radial embedding plastic body, can prevent axial coming off.Double wedge is arranged on metal pipe element periphery, can reserve more space in the axis of metal pipe element, is convenient to arrange leakage preventing structure.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of the metal pipe element in the insert structure of excircle cloth tooth of the present utility model.
Fig. 2 is the radial cross section schematic diagram of the insert structure of excircle cloth tooth of the present utility model.
Fig. 3 is the axial cross-sectional views along the direction of arrow in Fig. 2.
Fig. 4 is the schematic diagram of the insert structure of excircle cloth tooth of the present utility model.
Embodiment:
Embodiment 1:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the insert structure of excircle cloth tooth of the present utility model, comprise a plastic body 3 and a metal pipe element 1, described plastic body 3 is enclosed in the periphery of described metal pipe element 1, wherein, the periphery of described metal pipe element 1 is provided with a plurality of double wedge 2, and the plastic body 3 of the double wedge 2 described in any one all with described is chimeric.
Further, described double wedge 2 is distributed in first plane, and the first described plane orthogonal is in the axis of metal pipe element 1.
Further, described double wedge 2 is distributed in first plane and at least one second plane, the first described plane and the second plane are all perpendicular to the axis of metal pipe element 1, first plane and the second plane are along the axially-aligned of metal pipe element 1, and the number being arranged in the double wedge 2 of the first plane and any one the second plane is two or more separately.
Further, the periphery of metal pipe element 1 is cylndrical surface, and described double wedge 2 is circumferentially uniformly distributed.
Further, the periphery of metal pipe element 1 is cylndrical surface, and described double wedge 2 is circumferentially uniformly distributed separately in the first plane and any one second plane.
Further, screw thread is provided with in described metal pipe element 1.
The working principle of the present embodiment is: a plurality of double wedge 2 is arranged on the periphery of metal pipe element 1, when the diameter of metal pipe element 1 differs less than an order of magnitude with wall thickness dimension, be arranged in the antiturning pitch being arranged in end face in the double wedge 2 of periphery and prior art to compare, the double wedge 2 of metal pipe element 1 periphery is greater than the distance of antiturning pitch to metal pipe element 1 central axis of metal pipe element 1 end face to the distance of metal pipe element 1 central axis, the therefore obvious increase of the arm of force of its opposing torsional interaction; Meanwhile, the periphery of metal pipe element 1 can arrange the double wedge 2 of the above number of two circles vertically, considerably increase the number of double wedge 2, anti-rotation effect can be played more reliably, thus strengthen anti-twisting property.Double wedge 2, along with radial embedding plastic body 3, can prevent axial coming off.Double wedge 2 is arranged on metal pipe element 1 periphery, can reserve more space in the axis of metal pipe element 1, is convenient to arrange leakage preventing structure.
Claims (6)
1. the insert structure of an excircle cloth tooth, comprise a plastic body and a metal pipe element, described plastic body is enclosed in the periphery of described metal pipe element, it is characterized in that: the periphery of described metal pipe element is provided with a plurality of double wedge, and the plastic body of the double wedge described in any one all with described is chimeric.
2. the insert structure of excircle cloth tooth as claimed in claim 1, is characterized in that: described double wedge is distributed in first plane, and the first described plane orthogonal is in the axis of metal pipe element.
3. the insert structure of excircle cloth tooth as claimed in claim 2, it is characterized in that: described double wedge is distributed in first plane and at least one second plane, the first described plane and the second plane are all perpendicular to the axis of metal pipe element, first plane and the second plane are along the axially-aligned of metal pipe element, and the number being arranged in the double wedge of the first plane and any one the second plane is two or more separately.
4. the insert structure of excircle cloth tooth as claimed in claim 2, is characterized in that: the periphery of metal pipe element is cylndrical surface, and described double wedge is circumferentially uniformly distributed.
5. the insert structure of excircle cloth tooth as claimed in claim 3, is characterized in that: the periphery of metal pipe element is cylndrical surface, and described double wedge is circumferentially uniformly distributed separately in the first plane and any one second plane.
6. the insert structure of excircle cloth tooth as claimed in claim 1, is characterized in that: be provided with screw thread in described metal pipe element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766302.5U CN204345116U (en) | 2014-12-08 | 2014-12-08 | The insert structure of excircle cloth tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420766302.5U CN204345116U (en) | 2014-12-08 | 2014-12-08 | The insert structure of excircle cloth tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204345116U true CN204345116U (en) | 2015-05-20 |
Family
ID=53228384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420766302.5U Active CN204345116U (en) | 2014-12-08 | 2014-12-08 | The insert structure of excircle cloth tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204345116U (en) |
-
2014
- 2014-12-08 CN CN201420766302.5U patent/CN204345116U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |