CN201973147U - Spiral spring with anti-fracture end ring - Google Patents
Spiral spring with anti-fracture end ring Download PDFInfo
- Publication number
- CN201973147U CN201973147U CN2011200771985U CN201120077198U CN201973147U CN 201973147 U CN201973147 U CN 201973147U CN 2011200771985 U CN2011200771985 U CN 2011200771985U CN 201120077198 U CN201120077198 U CN 201120077198U CN 201973147 U CN201973147 U CN 201973147U
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- spring
- helical spring
- utility
- model
- spiral spring
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Abstract
The utility model discloses a spiral spring with an anti-fracture end ring, wherein the cross section of a wire rod of a support end ring (4) of the spiral spring (3) is in a semielliptic shape, and the semielliptic surface of the wire rod of the support ring (4) is towards a bearing ring (5) of the spiral spring (3). The spiral spring of the utility model employs a unique support end ring which can form a linear contact with the adjacent bearing ring in a better manner, therefore, the service life of the spring is obviously improved, the fatigue fracture of the spring is reduced; the spiral spring of the utility model is an innovation on structure, can greatly improve the work reliability of the spring by simply modifying the structure.
Description
Technical field
The utility model relates to a kind of helical spring, particularly, relates to a kind of helical spring with anti-fracture formula end circle.
Background technique
Spring is one of important foundation element in the engineering goods, and the performance quality of spring directly affects the security of operation and the efficient of entire equipment.
Generally speaking, the suffered shearing stress of any cross section of spring is in the stressed maximum of spring inside diameter, the stressed minimum of external diameter.Therefore owing to the fracture failure that designs, the strength of materials causes, formation of crack is often in the inboard of spring, reversing and the flexural stress maximum that bear at the 1st～3 circle place of spring.Fatigue often takes place at the 2nd～3 coil place in pressure spring easily, and the fracture location of spring generally all appears on the end face near the first lap and the second circle doubling-up, promptly between supported end circle and the transition circle.
Its structure of helical spring of the prior art is similar substantially, referring to illustrated in figures 1 and 2, this Fig. 1 and Fig. 2 show the extension state before the spring coiling, as can be seen from Figure, in the prior art, helical spring wire rod 2 is before being wound into helical spring, the cross section of its end astragal material part 1 is rectangular substantially, like this after this spring wire is wound into helical spring, (i.e. carrier ring between two supported end circles) has helix angle because helical spring carrier ring, so the carrier ring of supported end circle and vicinity forms down in working order, and partial points contacts rather than the line contact, the periphery of abrasive plane that produces because of contact wear in service and spring material forms acute angle, cause stress to concentrate on and a bit form the fatigue crack source, especially, under impulsive load, form stress peak, cause vibration, at first stressed near the end, and have little time to transfer loads on helical spring other circle, cause super allowable stress, fatigue fracture takes place and lost efficacy in the contact segment of the down close end of long-term work state easily.Practice confirms, the helical spring of this prior art defective that ruptures easily, and functional reliability reduces greatly.
In view of the above-mentioned defective of prior art, need a kind of novel helical spring of design.
The model utility content
The purpose of this utility model provides a kind of novel helical spring, and to overcome the above-mentioned defective of prior art, this helical spring can reduce the fatigue fracture defective significantly, strengthens the reliability of spring work effectively.
Above-mentioned purpose is achieved through the following technical solutions: have the helical spring of anti-fracture formula end circle, wherein, the wire rod cross section of this helical spring supported end circle is half elliptic, and the semiellipse surface of this supported end astragal material is towards described helical spring carrier ring.
With regard to technique effect of the present utility model, owing to good line can be formed by helical spring supported end circle of the present utility model with adjacent carrier ring and contact, thereby can reduce the phenomenon of rupture of spring effectively.For example, adopt with batch with the stove material, the fatigue test that the prior art helical spring and the helical spring of the present utility model of same size carried out under the equal loaded condition contrasts, and the result of its test makes a world of difference.The helical spring fatigue test number of times of prior art is much smaller than adopting the helical spring fatigue test number of times of the utility model.That is to say that the utility model helical spring is owing to adopt unique supported end circle, it can be significantly to the working life of improving spring, the fatigue fracture that reduces spring.Helical spring of the present utility model belongs on a kind of structure to be innovated, and it has improved the reliability of spring work greatly by simple architecture advances.
Description of drawings
Fig. 1 is the schematic top plan view of prior art helical spring end astragal material part;
Fig. 2 has wherein shown the cross section of prior art end astragal material part for the master of prior art helical spring end astragal material part looks schematic representation;
Fig. 3 is the schematic top plan view of the helical spring end astragal material part of the utility model embodiment;
Fig. 4 has wherein shown the part of the utility model end astragal material part for the master of the helical spring end astragal material part of the utility model embodiment looks schematic representation;
Fig. 5 is the helical spring schematic representation of the utility model embodiment.
Among the figure: 1 end astragal material part; 2 helical spring wire rods; 3 helical springs; 4 supported end circles; 5 carrier rings.
Embodiment
The helical spring embodiment that the utlity model has anti-fracture formula end circle is described below in conjunction with accompanying drawing.
As mentioned above, helical spring fracture location all appears near the supported end circle 4 and the second circle carrier ring 5, the supported end circle 4 of spring and carrier ring 5 form partial points in working order down and contacts the abrasive plane that produces because of contact wear in service and the periphery formation acute angle of spring material, cause stress to concentrate on a bit, thereby form the fatigue crack source, this is to cause one of easy major cause of failure of prior art helical spring.Therefore, if solve the contact wear problem of supported end circle 4 and carrier ring 5, the some contact during with carrying is improved to the line contact, and then spring contact wear phenomenon of rupture can significantly be removed.
Referring to Fig. 3 and shown in Figure 4, by improving the stone roller point mould of spring tip, make the cross section of end astragal material part 1 form half elliptic, the remaining part of helical spring wire rod 2 is constant.Like this, after helical spring wire rod 2 is reeled formation helical spring 3, referring to shown in Figure 5, helical spring of the present utility model has anti-fracture formula supported end circle 4, the wire rod cross section of this supported end circle 4 is half elliptic, and behind the spring of reeling in the shape of a spiral, the semiellipse face of these supported end circle 4 wire rods is towards the carrier ring 5 of helical spring 3.
By last description as can be known, owing to can form the excellent contact line with adjacent carrier ring 5 by helical spring supported end circle 4 of the present utility model, thus can reduce the phenomenon of rupture of spring effectively.In order to verify the helical spring technique effect of the utility model, can adopt with batch with the stove material, carried out the fatigue test contrast for the helical spring of same size, the result of its test makes a world of difference.For example for helical spring (the external diameter 40mm that adopts the Si-Cr alloyed steel to make, internal diameter 34mm, length 100mm, the number of turns 25), the helical spring of prior art is (for example 500kN flexural load) fatigue test number of times＜1.5 * 106 under identical Fatigue test load-up condition, and the helical spring fatigue test number of times of the utility model 〉=more than 2.5 * 106.Under the contrast as can be seen the utility model helical spring have the working life that significantly improves, can reduce the fatigue fracture of spring effectively, thereby strengthen the reliability of spring work effectively.Helical spring of the present utility model has improved the load-carrying properties of spring greatly by simple architecture advances.
Each concrete technical characteristics described in above-mentioned embodiment can carry out combination in any by any suitable manner, and it falls within the scope disclosed in the utility model equally.Simultaneously, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.In addition; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model, can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.Protection domain of the present utility model is defined by the claims.
Claims (1)
1. the helical spring that has anti-fracture formula end circle, it is characterized in that, the wire rod cross section of the supported end circle (4) of this helical spring (3) is half elliptic, and the semiellipse surface of this supported end circle (4) wire rod is towards the carrier ring (5) of described helical spring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200771985U CN201973147U (en) | 2011-03-23 | 2011-03-23 | Spiral spring with anti-fracture end ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200771985U CN201973147U (en) | 2011-03-23 | 2011-03-23 | Spiral spring with anti-fracture end ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201973147U true CN201973147U (en) | 2011-09-14 |
Family
ID=44578250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200771985U Expired - Lifetime CN201973147U (en) | 2011-03-23 | 2011-03-23 | Spiral spring with anti-fracture end ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201973147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110064A (en) * | 2021-12-02 | 2022-03-01 | 国网山东省电力公司昌乐县供电公司 | Windproof low-temperature-resistant telescopic spring for circuit, power transmission line and method |
-
2011
- 2011-03-23 CN CN2011200771985U patent/CN201973147U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110064A (en) * | 2021-12-02 | 2022-03-01 | 国网山东省电力公司昌乐县供电公司 | Windproof low-temperature-resistant telescopic spring for circuit, power transmission line and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |