CN201990941U - Shearing spring - Google Patents
Shearing spring Download PDFInfo
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- CN201990941U CN201990941U CN2011200852681U CN201120085268U CN201990941U CN 201990941 U CN201990941 U CN 201990941U CN 2011200852681 U CN2011200852681 U CN 2011200852681U CN 201120085268 U CN201120085268 U CN 201120085268U CN 201990941 U CN201990941 U CN 201990941U
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- shearing
- polyurethane material
- shearing spring
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Abstract
The utility model discloses a shearing spring, which comprises a polyurethane elastomer and connectors, wherein the connectors are symmetrically arranged at both ends of the polyurethane elastomer by a casting-molding method, and each connector is provided with an installing blind hole along an axial direction and is a metal plate with a spherical surface; and the hole wall of the installing blind hole is provided with threads. Compared with a traditional rubber shearing spring, the shearing spring disclosed by the utility model is made of a polyurethane material, so by utilizing the good mechanical performance of the polyurethane material, the shearing force of the shearing spring disclosed by the utility model is increased by about 30 percent under an equal rigidity condition, the anti-fatigue performance is markedly improved, the residual deformation quantity is greatly decreased, and the service life is long; and in addition, because a product is made of the polyurethane material by adopting the casting-molding method, the quality of the obtained product is stable, the pollution is small, the energy consumption is low, and the manufacturing cost is greatly saved.
Description
Technical field
The utility model relates to the device accessory in a kind of bridge field, particularly a kind of shear spring that is used for bridge extension joint.
Background technology
Bridge extension joint is important composition parts of bridge construction, is for making vehicle steadily by bridge floor and satisfy the distortion needs of bridge floor, the general name of the various devices that are provided with at the deck joint place.Modulus formula bridge extension joint is meant mainly the supporting construction that is combined by special section or steel assembly and elastic component, is assembled into the series of products of different size stroke as required.Its elastic component comprises that mainly shear spring, compression control spring, pressure-bearing support, compress elastic components such as supporting.In the prior art, shear spring mainly passes through sulfidization molding by rubber, because the ageing-resistant performance and the cryogenic property of elastomeric material are relatively poor, the shearing force of the shear spring product that elastomeric material is made is less, and anti-fatigue performance is relatively poor, and the permanent set amount is bigger; And the production method that adopts sulfuration causes polluting and energy consumption is bigger, and cost is higher, and usually because the compounding rubber colloid mixes the inhomogeneous products obtained therefrom quality instability that causes.
At above-mentioned deficiency, need to explore a kind of novel shear spring that is used for bridge extension joint, its mechanical property can be improved greatly, and the cost of production reduction, product quality improves greatly, environmental protection simultaneously.
The utility model content
In view of this, the purpose of this utility model provides a kind of shear spring, makes that its ageing-resistant performance and cryogenic property are good, shearing force is big, anti-fatigue performance good, the permanent set amount is less, the comprehensive mechanical property height, and long service life, and also cost is lower.
The purpose of this utility model is achieved through the following technical solutions: a kind of shear spring, comprise polyurethane elastomer and connector, described connector is symmetricly set on the polyurethane elastomer two ends by the method for moulding by casting, and connector is provided with installing blind vertically.
Further, described connector is the metal sheet of dome shape for one side;
Further, the hole wall of described installing blind is provided with screw thread.
The beneficial effects of the utility model: shear spring of the present utility model, compare with traditional rubber shear spring, owing to adopt polyurethane material, utilize polyurethane material good aging properties and cryogenic property, good mechanical performance, make the shearing force of shear spring of the present utility model under equal stiffness conditions increase about 30%, and anti-fatigue performance is clearly better, and the permanent set amount reduces greatly, long service life; In addition, owing to adopt the method for moulding by casting to carry out the product manufacturing to polyurethane material, the products obtained therefrom steady quality pollutes for a short time, and energy consumption is low, has saved manufacturing cost greatly.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is a structure sectional view of the present utility model.
The specific embodiment
Fig. 1 is a structure sectional view of the present utility model, as shown in the figure: shear spring of the present utility model, comprise polyurethane elastomer 1 and connector 2, described connector 2 is symmetricly set on polyurethane elastomer 1 two ends by the method for moulding by casting, and connector 2 is provided with installing blind 3 vertically.Compare with traditional rubber shear spring, owing to adopt polyurethane material, utilize polyurethane material good aging properties and cryogenic property, good mechanical performance, make the shearing force of shear spring of the present utility model under equal stiffness conditions increase about 30%, and anti-fatigue performance is clearly better, the permanent set amount reduces greatly, long service life; In addition, owing to adopt the method for moulding by casting to carry out the product manufacturing to polyurethane material, the products obtained therefrom steady quality pollutes for a short time, and energy consumption is low, has saved manufacturing cost greatly.
As the further improvement to the foregoing description, described connector 2 is the metal sheet of dome shape for one side.Adopt dome shape to get metal sheet, increased the also bond area between the polyurethane elastomer 1 of connector 2, strengthened the adhesion strength between the two greatly, guaranteed the quality of product.
As the further improvement to the foregoing description, the hole wall of described installing blind 3 is provided with screw thread 4.Be provided with the screw thread installing blind can between by the mode that is threaded shear spring is installed and fixed, use very convenient.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. shear spring, it is characterized in that: comprise polyurethane elastomer (1) and connector (2), described connector (2) is symmetricly set on the polyurethane elastomer two ends by the method for moulding by casting, and connector (2) is provided with installing blind (3) vertically.
2. shear spring according to claim 1 is characterized in that: described connector (2) is the metal sheet of dome shape for one side.
3. shear spring according to claim 1 is characterized in that: the hole wall of described installing blind (3) is provided with screw thread (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200852681U CN201990941U (en) | 2011-03-28 | 2011-03-28 | Shearing spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200852681U CN201990941U (en) | 2011-03-28 | 2011-03-28 | Shearing spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201990941U true CN201990941U (en) | 2011-09-28 |
Family
ID=44667430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200852681U Expired - Fee Related CN201990941U (en) | 2011-03-28 | 2011-03-28 | Shearing spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201990941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369734A (en) * | 2015-11-17 | 2016-03-02 | 成都科创佳思科技有限公司 | Bridge expansion joint |
-
2011
- 2011-03-28 CN CN2011200852681U patent/CN201990941U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105369734A (en) * | 2015-11-17 | 2016-03-02 | 成都科创佳思科技有限公司 | Bridge expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20160328 |