CN201916404U - Shear spring used for bridge expansion and contraction installation - Google Patents
Shear spring used for bridge expansion and contraction installation Download PDFInfo
- Publication number
- CN201916404U CN201916404U CN201120027084XU CN201120027084U CN201916404U CN 201916404 U CN201916404 U CN 201916404U CN 201120027084X U CN201120027084X U CN 201120027084XU CN 201120027084 U CN201120027084 U CN 201120027084U CN 201916404 U CN201916404 U CN 201916404U
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- CN
- China
- Prior art keywords
- spring body
- connecting base
- connecting seat
- spring
- shear spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a shear spring used for a bridge expansion and contraction installation. The shear spring comprises a spring body (1) and a connecting seat (2), wherein the spring body (1) is provided with the connecting seat (2); the connecting seat (2) is embedded in the spring body (1) to form an integral structure; a connecting hole (2a) is formed on the connecting seat (2); and the cross section of the outer end surface of the spring body (1) has an embedded step structure. The shear spring has a simple and practical structure, enlarges the adhered area of the end surface of the connecting seat and the rubber spring body by changing the end surface structure of the connecting seat, improves the adhesion strength, prevents the local de-adherence, and ensures the service life thereof.
Description
Technical field
The utility model belongs to the bridge technology field, relates to a kind of bridge extension joint shear spring concretely.
Background technique
The existing conventional rubber shear spring that uses generally is to be stained with connecting base as elastomeric rubber beam-ends, or directly and the connecting base sulfidization molding together, be fixed on the corresponding device thereof by connecting base.Because the shear strength of conventional rubber is not very high, bonding between connecting base and the spring body neither be very firm, shear strength increase and bridge flexible when frequent, bond failure appears easily, influence is used for a long time; So can only be applied to the less demanding and flexible not frequent place of shearing force.Especially in the junction of the end face and the rubber shear spring of joint, be in same plane between the two, bond area is little, and in use being subjected to the effect bonding place of shearing force to be very easy to open influences its working life.
The model utility content
The purpose of this utility model has provided a kind of simple in structure, area of contact that can increase connecting base end face and rubber spring body, improves bonding strength, makes and shears stressed dispersion, effectively prevents the bridge extension joint shear spring of local unsticking situation.
The technical solution of the utility model is as follows:
The bridge extension joint shear spring comprises the rubber spring body, connecting base, described rubber spring body is provided with connecting base, this connecting base is embedded in that the described rubber spring bodily form is into a single integrated structure, and described connecting base has attachment hole, and the external end face cross section of rubber spring is embedded ladder-type structure.
Step-like structure is embedded in the rubber spring body end face of connecting base, can not only increase bond area, the raising bonding strength of end face and rubber body, the interaction energy of rubber spring body and connecting base ladder surface makes shearing force disperse simultaneously, reduce " burden " at bonding mouthful of place, prevent that local unsticking from improving its working life.
Described attachment hole the inner is provided with choke cover.
Usually by mould with in the rubber fluid injection device, cooling back fluid and connecting base form integrative-structure, for preventing that fluid enters attachment hole aborning, choke cover just plays its effect.
The rubber material of described rubber spring body is selected polyurethane for use.
Polyurethane is that a kind of current material has characteristics such as shear resistance is strong.
Beneficial effect: the utility model is simple in structure, practical, by the remodeling to the connecting base end-face structure, has increased the bond area of end face and rubber spring body, has improved bonding strength, prevents local unsticking, has guaranteed its working life.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 structural representation of the present utility model;
Fig. 2 is the connecting base structural representation; The A place is the ladder-type structure of connecting base end face.
Embodiment
Shown in Fig. 1,2: the bridge extension joint shear spring, comprise rubber spring body 1, connecting base 2, described rubber spring body 1 is provided with connecting base 2, this connecting base 2 is embedded in described rubber spring body 1 and forms integrative-structure, described connecting base 2 has attachment hole 2a, and rubber spring body 1 exterior edge face cross section is embedded ladder-type structure.
Described attachment hole 2a the inner is provided with choke cover 3.
The rubber material of described rubber spring body 1 is selected polyurethane for use.
The related shear spring of the utility model mainly is made up of spring body, connecting base.Spring body both ends of the surface in that nonmetallic material are made are embedded with two metal-connecting seats, are processed with the tapped hole that usefulness is installed in the middle of the connecting base.The spring body of shear spring is the solid cylinder that the polyurethane material by anti-environmental aging function admirable, shear strength height, good springiness is made; The end face of pre-buried connecting base is processed with one or more levels step, can increase the area of contact with the polyurethane spring body, can not only increase bonding strength between the two, can delay the extent of exfoliation between connecting base and the spring body under the situation that local unsticking takes place simultaneously.The transverse section of shear spring main body is circular.When shear spring uses, with connecting bolt the end face of spring is connected with corresponding device thereof and gets final product.
Claims (3)
1. bridge extension joint shear spring, comprise rubber spring body (1), connecting base (2), described rubber spring body (1) is provided with connecting base (2), this connecting base (2) is embedded in described rubber spring body (1) and forms integrative-structure, described connecting base (2) has attachment hole (2a), it is characterized in that: rubber spring body (1) exterior edge face cross section is embedded ladder-type structure.
2. bridge extension joint shear spring according to claim 1 is characterized in that: described attachment hole (2a) the inner is provided with choke cover (3).
3. bridge extension joint shear spring according to claim 1 and 2 is characterized in that: the rubber material of described rubber spring body (1) is selected polyurethane for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120027084XU CN201916404U (en) | 2011-01-27 | 2011-01-27 | Shear spring used for bridge expansion and contraction installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120027084XU CN201916404U (en) | 2011-01-27 | 2011-01-27 | Shear spring used for bridge expansion and contraction installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201916404U true CN201916404U (en) | 2011-08-03 |
Family
ID=44416201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120027084XU Expired - Fee Related CN201916404U (en) | 2011-01-27 | 2011-01-27 | Shear spring used for bridge expansion and contraction installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201916404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878911A (en) * | 2014-03-27 | 2014-06-25 | 北京航天控制仪器研究所 | Manufacturing method of cylindrical rubber shock absorber for platform system |
-
2011
- 2011-01-27 CN CN201120027084XU patent/CN201916404U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878911A (en) * | 2014-03-27 | 2014-06-25 | 北京航天控制仪器研究所 | Manufacturing method of cylindrical rubber shock absorber for platform system |
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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: 20110803 Termination date: 20180127 |