CN214838052U - Wear-resistant spring - Google Patents
Wear-resistant spring Download PDFInfo
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- CN214838052U CN214838052U CN202120667486.XU CN202120667486U CN214838052U CN 214838052 U CN214838052 U CN 214838052U CN 202120667486 U CN202120667486 U CN 202120667486U CN 214838052 U CN214838052 U CN 214838052U
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Abstract
The application relates to the technical field of springs, in particular to an anti-abrasion spring which comprises a cylindrical spring part and a conical spring part arranged at the end part of the cylindrical spring part; the pitch of the cylindrical spring part in the original length state is smaller than that of the conical spring part in the original length state; the surface of the cylindrical spring part and the surface of the conical spring part are both provided with a nitriding layer, and the nitriding layer is provided with a metal protective layer. This application can improve the resistance to wear of spring, makes the spring more durable.
Description
Technical Field
The application relates to the technical field of springs, in particular to an abrasion-resistant spring.
Background
At present, a spring is an elastic mechanical part, and the low-end common spring products are in excess demand in the spring industry, while the high-end spring products such as high strength, high stress, abrasion resistance and the like are in short demand. In the related art, the wear resistance of the spring is improved, and the hardness of the surface of the spring is often improved by using a heat treatment process, so that the spring has certain wear resistance.
In view of the above-mentioned related art, the inventors found that the spring has a defect that the wear resistance is to be improved and the spring is not durable.
SUMMERY OF THE UTILITY MODEL
In order to improve the wear resistance of the spring and make the spring more durable, the application provides a wear-resistant spring.
The application provides a spring that resistance to wears adopts following technical scheme:
an abrasion resistant spring includes a cylindrical spring portion and a conical spring portion provided at an end of the cylindrical spring portion;
the pitch of the cylindrical spring part in the original length state is smaller than that of the conical spring part in the original length state;
the surface of the cylindrical spring part and the surface of the conical spring part are both provided with a nitriding layer, and the nitriding layer is provided with a metal protective layer.
By adopting the technical scheme, the cylindrical spring part is an unusual part of the spring, the conical spring part is a usual part, and the pitch of the cylindrical spring part in the original length is smaller than that of the conical spring part in the original length. The impact collision force generated between the spring wires of the spring part which is not used is small, even the deformation collision is not easy to occur, and the cylindrical spring part of the spring is not easy to be abraded. And the surface of conical spring part and cylindrical spring part has all set up the nitriding layer, and the nitriding layer can improve the hardness of spring, makes the resistance to wear of spring better, in addition, still is provided with the metal protection layer on the nitriding layer, has further improved the resistance to wear of spring, makes the spring more durable.
Optionally, the cross section of the spring wire of the cylindrical spring part is a kidney-shaped circle.
Through adopting above-mentioned technical scheme, the cross section of the spring wire of cylindrical spring part is waist circular, makes the contact between the spring wire of cylindrical spring part become the face contact by line contact, and the frictional force between the spring wire of increase cylindrical spring part makes the spring wire of cylindrical spring part be difficult to take place lateral sliding, reduces the wearing and tearing between the spring wire of cylindrical spring part, improves the wear resistance of spring.
Optionally, a paint film layer is further disposed on the metal protection layer.
By adopting the technical scheme, a smooth and firm paint film layer is formed on the surface of the metal protection layer, so that the metal protection layer has an anti-corrosion effect, and the surface of the whole spring has better wear resistance.
Optionally, a ceramic wear-resistant layer is arranged on the paint film layer.
Through adopting above-mentioned technical scheme, the setting up of ceramic wearing layer can protect the lacquer rete, makes the lacquer rete be difficult for being damaged, makes the wear resistance of whole spring better.
Optionally, the surface of the ceramic wear-resistant layer on the conical spring part is provided with a plastic coating layer.
Through adopting above-mentioned technical scheme, the plastics cladding layer can play the effect that makes the spring anti-oxidant, and in addition, the plastics cladding layer makes frictional force reduce between the spring wire of conical spring part and the spring wire to reduce the wearing and tearing of conical spring part, and then improve the wear resistance of spring.
Optionally, the conical spring portion has an inner diameter that increases in size in a direction away from the cylindrical spring portion.
Through adopting above-mentioned technical scheme, make the spring in the same space, the conical spring part is compared in the pressure that cylindrical spring can bear bigger, can bear bigger pressure under the same deformation volume to reduce the wearing and tearing that produce because of deformation between the spring wire of conical spring part, improve the wear resistance of this application.
Optionally, the open ends of the cylindrical spring portion and the conical spring portion are both ground flat end faces.
By adopting the technical scheme, the contact between the two ends of the spring and other mechanical parts can be changed from point contact into line contact or surface contact by grinding the end faces, the stress area is increased, and the contact faces are prevented from being scratched and damaged.
Optionally, the open ends of the cylindrical spring portion and the conical spring portion are provided with wear-resistant gaskets.
Through adopting above-mentioned technical scheme, the setting up of wear-resisting gasket makes the opening terminal surface of spring more wear-resisting, and is not fragile.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the impact collision force that produces between the spring wire of cylindrical spring part is less in this application, is difficult to take place to warp the collision even, makes the cylindrical spring part of spring difficult by wearing and tearing. The surfaces of the conical spring part and the cylindrical spring part are provided with nitriding layers, the nitriding layers can improve the hardness of the spring and enable the wear resistance of the spring to be better, and in addition, the nitriding layers are also provided with metal protection layers, so that the wear resistance of the spring is further improved and the spring is more durable;
2. the cross section of the spring wire of the cylindrical spring part in the application is in a waist circular shape, so that the contact between the spring wires of the cylindrical spring part is changed into surface contact by line contact, the friction force between the spring wires of the cylindrical spring part is increased, the spring wires of the cylindrical spring part are not easy to slide laterally, the abrasion between the spring wires of the cylindrical spring part is reduced, and the abrasion resistance of the spring is improved.
Drawings
Fig. 1 is a schematic view of an overall structure of an anti-wear spring disclosed in an embodiment of the present application.
Fig. 2 is a schematic cross-sectional view of the wire of the conical spring portion in the embodiment of the present application.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Description of reference numerals: 11. a cylindrical spring portion; 21. a conical spring portion; 31. a nitriding layer; 32. a metal protective layer; 33. a paint film layer; 34. a ceramic wear layer; 35. a plastic coating layer; 41. wear-resistant gaskets.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a wear-resistant spring. Referring to fig. 1 and 2, the spring includes a cylindrical spring portion 11, a conical spring portion 21, a nitriding layer 31, and a metal protection layer 32.
The inner diameter of the wire of the cylindrical spring portion 11 is constant and the pitch at the original length is small while the pitch of the conical spring portion 21 at the original length is small, in some possible embodiments of the present application, the pitch of the cylindrical spring portion 11 may be equal to the diameter of the wire. The conical spring portion 21 and the cylindrical spring portion 11 are integrally formed by rolling, the nitriding layer 31 is formed on the surface of the spring wire of the rolled spring by a nitriding process, and the nitriding layer 31 is coated on the surfaces of the cylindrical spring portion 11 and the conical spring portion 21. The nitrided layer 31 can improve the hardness of the spring, so that the spring is more wear-resistant. The metal protection layer 32 is plated on the surface of the nitriding layer 31, and in the possible embodiments of the present application, the metal protection layer 32 may be a chromium plating layer, a nickel plating layer, or a zinc-titanium alloy plating layer.
Further, referring to fig. 1, the cross section of the spring wire of the cylindrical spring portion 11 is a kidney-shaped cross section, that is, the upper and lower surfaces of the spring wire are parallel surfaces, and two side surfaces of the side surface of the spring wire are arc surfaces. Therefore, the spring wires of the cylindrical spring part 11 are in surface contact with the spring wires, friction force is increased, the spring wires of the cylindrical spring part 11 which is not commonly used are not easy to translate relatively under the action of impact force, and abrasion between the spring wires is reduced.
In order to make the metal protective layer 32 more durable, it is less susceptible to corrosion. Referring to fig. 2, a paint film layer 33 is further disposed on the metal protection layer 32, and the paint film layer 33 can be formed by uniformly depositing a paint film on the surface of the metal protection layer 32 by a spraying method or a dip coating method, so that the spring is more durable under severe working conditions.
In addition, in order to make the spring more wear-resistant, a ceramic wear-resistant layer 34 is further arranged on the paint film layer 33, and the ceramic wear-resistant layer 34 can be formed by spraying ceramic wear-resistant paint on the surface of the paint film layer 33.
Further, in order to reduce the friction force between the wires of the conical spring part 21 of the spring and reduce the abrasion of the conical spring part 21 in the using process, a plastic coating layer 35 is arranged on the surface of the ceramic wear-resistant layer 34 on the conical spring part 21, and the plastic coating layer 35 is formed by coating a plastic film on the wires of the conical spring part 21.
As a possible embodiment of the present application, referring to fig. 1, the inner diameter of the conical spring portion 21 gradually increases in a direction away from the cylindrical spring portion 11, that is, the conical spring portion 21 is in an inverted cone shape, and in the same space, the conical spring portion 21 can bear a larger pressure than a conventional cylindrical spring, and the conical spring portion 21 can bear a larger pressure under the same deformation amount.
In order to reduce the abrasion of the contact surfaces of the two open ends of the spring and other mechanical parts, the open ends of the cylindrical spring part 11 and the conical spring part 21 are both flat-ground end surfaces, so that the contact between the open end surface of the cylindrical spring part 11 and other mechanical parts and the contact between the open end surface of the conical spring part 21 and other mechanical parts are changed from point contact into line contact or surface contact, the stress area is increased, and the contact surfaces are prevented from being scratched and damaged.
Further, to improve the wear resistance of the spring, referring to fig. 3, the open ends of the cylindrical spring portion 11 and the conical spring portion 21 are provided with wear-resistant pads 41, and the wear-resistant pads 41 may be welded to the open end faces of the cylindrical spring portion 11 and the conical spring portion 21.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. An anti-fretting spring, characterized in that: comprises a cylindrical spring part (11) and a conical spring part (21) arranged at the end part of the cylindrical spring part (11);
the pitch of the cylindrical spring part (11) in the original length state is smaller than that of the conical spring part (21) in the original length state;
the surface of cylinder spring part (11) and conical spring part (21) all is equipped with nitriding layer (31), be equipped with metal protection layer (32) on nitriding layer (31).
2. An abrasion resistant spring according to claim 1, wherein: the cross section of the spring wire of the cylindrical spring part (11) is in a kidney-shaped shape.
3. An abrasion resistant spring according to claim 1 or 2, wherein: and a paint film layer (33) is also arranged on the metal protective layer (32).
4. A wear resistant spring according to claim 3, wherein: and a ceramic wear-resistant layer (34) is arranged on the paint film layer (33).
5. An abrasion resistant spring according to claim 4, wherein: the surface of the ceramic wear-resistant layer (34) on the conical spring part (21) is provided with a plastic coating layer (35).
6. An abrasion resistant spring according to claim 1, wherein: the inner diameter of the conical spring part (21) is gradually increased in size along the direction far away from the cylindrical spring part (11).
7. An abrasion resistant spring according to claim 1, wherein: the open ends of the cylindrical spring part (11) and the conical spring part (21) are both ground end faces.
8. An abrasion resistant spring according to claim 7, wherein: the open ends of the cylindrical spring part (11) and the conical spring part (21) are provided with wear-resistant gaskets (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667486.XU CN214838052U (en) | 2021-03-31 | 2021-03-31 | Wear-resistant spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667486.XU CN214838052U (en) | 2021-03-31 | 2021-03-31 | Wear-resistant spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214838052U true CN214838052U (en) | 2021-11-23 |
Family
ID=78761470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120667486.XU Active CN214838052U (en) | 2021-03-31 | 2021-03-31 | Wear-resistant spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214838052U (en) |
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2021
- 2021-03-31 CN CN202120667486.XU patent/CN214838052U/en active Active
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