CN202899030U - Insulating spherical steel supporting seat - Google Patents
Insulating spherical steel supporting seat Download PDFInfo
- Publication number
- CN202899030U CN202899030U CN2012206262983U CN201220626298U CN202899030U CN 202899030 U CN202899030 U CN 202899030U CN 2012206262983 U CN2012206262983 U CN 2012206262983U CN 201220626298 U CN201220626298 U CN 201220626298U CN 202899030 U CN202899030 U CN 202899030U
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- Prior art keywords
- insulating
- sleeve
- insulation
- stone bolt
- bridge
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Abstract
The utility model belongs to the technical field of bridge supports and discloses an insulating spherical steel supporting seat. The insulating spherical steel supporting seat is mainly characterized by comprising an upper seat plate, a sphere core and a lower seat plate, wherein the upper seat plate is provided with upper foundation bolts which penetrate through a beam bottom pre-embedded steel plate, the lower seat plate is provided with lower foundation bolts, and threaded parts of the upper foundation bolts and the lower foundation bolts are connected with sleeves. A high-strength insulating protective layer is arranged on the outer wall of each sleeve, an insulating pad plate is arranged between the upper seat plate and the beam bottom pre-embedded steel plate, and threaded rod outer walls of the upper foundation bolts and the lower foundation bolts are provided with insulating sleeves. In the supporting seat, the sleeves with the high-strength insulating protective layers on the outer walls, the insulating sleeves, spacers which are connected with the insulating sleeves into a whole and the insulating pad plate constitute a reliable insulating system with a reasonable structure, and therefore a passage where stray currents are leaked to a bridge girder abutment wall and a civil engineering structure through the bridge support is thoroughly blocked.
Description
Technical field
The utility model belongs to the bridge pad technical field, relates in particular to a kind of insulation spherical steel support.
Background technology
Underground engines is in when operation, the DC traction power-supply system take rail as current return circuit.Because rail can not electrically isolate from ballast bed structure fully, to railway roadbed and other structure leakage current, this electric current is exactly stray electrical current to rail inevitably, is also referred to as fan's stream in the ground.
In railway, light rail and subway viaduct and various large-scale suspension bridge girder construction, be provided with bridge pad between bridge beam body and the Bridge Pier.Because pre-buried a large amount of reinforcing bar in the bridge construction, and common spherical steel support does not arrange insulation measures, and stray electrical current will be by bridge pad leakage current in Bridge Pier and the civil engineering structure.Stray electrical current can produce electrochemical corrosion to Bridge Pier and civil engineering structure reinforcing bar, equipment metal shell and other underground metal pipeline, simultaneously larger stray electrical current pedestrian and the environment under the entail dangers to bridge also.
The insulation spherical steel support primary structure form of using in the present domestic bridge engineering is: be provided with insulating layer in spherical steel support top, bottom surface, be provided with insulation sleeve in the anchor (bolt) hole of upper base plate.Existing insulation spherical steel support, although can play to a certain extent the effect of insulation, but also have some problems: the sleeve that is connected with stone bolt is to imbed steel part the darkest in the bridge beam body, also be stray electrical current through the topmost pathway of the downward leakage current of bridge beam body, and sleeve is not arranged insulation measures in the existing structure; The insulation sleeve that arranges in the anchor (bolt) hole of upper base plate not only plays the effect of insulation between stone bolt and upper base plate must transmit bridge superstructure through the horizontal loading of stone bolt to upper base plate simultaneously, and is the anchor (bolt) hole at upper base plate in the existing structure
In be provided with insulation sleeve and the function of not its not being transmitted horizontal loading has requirement.
The utility model content
The technical problems to be solved in the utility model just provides a kind of stray electrical current that prevents by the insulation spherical steel support of bridge pad leakage current in Bridge Pier and the civil engineering structure.
For solving the problems of the technologies described above; the technical solution adopted in the utility model is: comprise upper base plate, ball core and lower seat board; upper base plate is provided with the upper stone bolt that passes pre-embedded steel slab at the bottom of the beam; lower seat board is provided with lower stone bolt; the threaded portion of upper stone bolt and lower stone bolt is connected with sleeve; the outer wall of described sleeve is provided with the high-strength insulating topping; be provided with insulating pad between the pre-embedded steel slab at the bottom of upper base plate and the beam, the screw rod outer wall of upper stone bolt and lower stone bolt is provided with insulation sleeve.
Its additional technical feature is: the top of described insulation sleeve is provided with the pad that is connected as a single entity with it; Pre-embedded steel slab at the bottom of the insulation sleeve of described upper stone bolt screw rod outer wall passes upper base plate, insulating pad and partly passes beam.
A kind of insulation spherical steel support provided by the utility model; compared with prior art; the outer wall of sleeve is provided with the high-strength insulating topping, is provided with insulating pad between the pre-embedded steel slab at the bottom of upper base plate and the beam, and the screw rod outer wall of upper stone bolt and lower stone bolt is provided with insulation sleeve.
The high-strength insulating material of making the high-strength insulating topping includes but not limited to nylon 66; high-strength insulating material tensile strength is not less than 120MPa; stretch modulus is not less than 2.0GPa; be not less than 6.0N/mm with the metal adhesion strength; dielectric strength is not less than 31.5kV/mm, and specific insulation is not less than 1.0 * 10
13Ω .cm.High-strength insulating topping and sleeve adopt the method for injection mo(u)lding to be combined as a whole.
The high-strength insulating material of making insulation sleeve includes but not limited to nylon 66, and high-strength insulating material tensile strength is not less than 120MPa, and stretch modulus is not less than 2.0GPa, and dielectric strength is not less than 31.5kV/mm, and specific insulation is not less than 1.0 * 10
13Ω .cm.
The withstand voltage insulation materials of making insulating pad includes but not limited to asbestos packing sheet, and withstand voltage insulation materials tensile strength is not less than 6.0MPa, and dielectric strength is not less than 6.0kV/mm, and specific insulation is not less than 2.0 * 10
10Ω .cm.
When a kind of insulation spherical steel support provided by the utility model used, when stray electrical current conducted to sleeve by bridge beam body, the high-strength insulating topping of sleeve outer wall was kept apart stray electrical current and sleeve, thereby had stoped the conduction of stray electrical current to sleeve.Because the good mechanical physical property that the high-strength insulating topping has can not broken by the teeth by concrete aggregate, ensured the reliability of high-strength insulating topping insulating properties simultaneously.
When stray electrical current by bridge beam body at the bottom of the beam during pre-embedded steel slab conduction, insulating pad is kept apart stray electrical current and upper base plate, thereby has stoped the direct conduction of stray electrical current to upper base plate.Because insulating pad is a kind of pressure-resistant material, can by pre-embedded steel slab conquassation, breakage at the bottom of the beam, not ensure the reliability of insulating pad insulating properties simultaneously.
When stray electrical current by bridge beam body at the bottom of the beam during pre-embedded steel slab conduction, stray electrical fails to be convened for lack of a quorum and conducts to sleeve.Because sleeve and stone bolt adopt thread connecting mode, stray electrical fails to be convened for lack of a quorum and further conducts to stone bolt by sleeve.At this moment, insulation sleeve and the pad that is connected as a single entity are with it kept apart stone bolt and upper base plate.Because the good mechanical physical property that insulation sleeve and the pad that is connected as a single entity with it have, the horizontal loading of bridge superstructure is through stone bolt, when insulation sleeve passes to upper base plate, insulation sleeve can be by conquassation, break by the teeth, has ensured the reliability of insulation sleeve insulating properties.
A kind of insulation spherical steel support provided by the utility model, in the outside injection moulding of sleeve one deck high-strength insulating topping, cut off the main pathway of stray electrical current through the downward leakage current of bridge beam body; The insulation sleeve that arranges on upper stone bolt and the lower stone bolt not only plays the effect of insulation and transmits simultaneously bridge superstructure through the horizontal loading of stone bolt to upper base plate and lower seat board; Outer wall is provided with the insulation system that the sleeve, insulation sleeve of high-strength insulating topping and the pad that is connected as a single entity with it and insulating pad have formed more reliable a, more reasonable structure, thoroughly blocked stray electrical current by the path of bridge pad leakage current in Bridge Pier and the civil engineering structure.
Description of drawings
Fig. 1 is the structural representation of a kind of spherical steel support that insulate of the utility model;
Fig. 2 is the enlarged drawing at A place among Fig. 1.
The specific embodiment
Be described in further details below in conjunction with the concrete structure of accompanying drawing to a kind of spherical steel support that insulate of the utility model.
As shown in Figure 1, a kind of insulation spherical steel support of the utility model comprises pre-embedded steel slab 2 at the bottom of stone bolt 1, the beam, insulating pad 3, upper base plate 4, ball core 5, lower seat board 6, lower stone bolt 7.As shown in Figure 2; upper stone bolt 1 passes pre-embedded steel slab 2 at the bottom of upper base plate 4, insulating pad 3, the beam; the screw rod outer wall of upper stone bolt 1 is provided with insulation sleeve 8; the threaded portion of upper stone bolt 1 is connected with sleeve 9; the outer wall of sleeve 9 is provided with high-strength insulating topping 10; the top of insulation sleeve 8 is provided with the pad 11 that is connected as a single entity with it, pre-embedded steel slab 2 at the bottom of insulation sleeve 8 passes upper base plate 4, insulating pad 3 and partly passes beam.
When a kind of insulation spherical steel support provided by the utility model uses; when stray electrical current conducts to sleeve 9 by bridge beam body; the high-strength insulating topping 10 of sleeve 9 outer walls is kept apart stray electrical current and sleeve 9, thereby has stoped the conduction of stray electrical current to sleeve 9.Because the good mechanical physical property that high-strength insulating topping 10 has can not broken by the teeth by concrete aggregate, ensured the reliability of high-strength insulating topping insulating properties simultaneously.
When stray electrical current by bridge beam body at the bottom of the beam during pre-embedded steel slab 2 conduction, insulating pad 3 is kept apart stray electrical current and upper base plate 4, thereby has stoped the direct conduction of stray electrical current to upper base plate 4.Because insulating pad 3 is a kind of pressure-resistant material, can by pre-embedded steel slab conquassation, breakage at the bottom of the beam, not ensure the reliability of insulating pad 3 insulating properties simultaneously.
When stray electrical current by bridge beam body at the bottom of the beam during pre-embedded steel slab 2 conduction, stray electrical fails to be convened for lack of a quorum to sleeve 9 conduction.Because sleeve 9 adopts thread connecting mode with upper stone bolt 1, lower stone bolt 7, stray electrical fails to be convened for lack of a quorum further by up foot bolt 1,7 conduction of lower stone bolt of sleeve 9.At this moment, insulation sleeve 8 and the pad 11 that is connected as a single entity are with it kept apart upper stone bolt 1, lower stone bolt 7 with upper base plate 4, lower seat board 6.Because the good mechanical physical property that insulation sleeve 8 and the pad 11 that is connected as a single entity with it have, the horizontal loading of bridge superstructure is through upper stone bolt 1, lower stone bolt 7, when insulation sleeve 8 passes to upper base plate 4, lower seat board 6, insulation sleeve 8 and the pad 11 that is connected as a single entity with it can be by conquassation, break by the teeth, ensured insulation sleeve 8 and the reliability of pad 11 insulating properties that are connected as a single entity with it.
A kind of insulation spherical steel support provided by the utility model, in sleeve 9 outside injection mouldings one deck high-strength insulating topping 10, cut off the main pathway of stray electrical current through the downward leakage current of bridge beam body; The effect that the insulation sleeve 8 that arranges on upper stone bolt 1 and the lower stone bolt 7 not only plays insulation is transmitted bridge superstructure simultaneously through upper stone bolt 1, lower stone bolt 7 horizontal loading to upper base plate 4 and lower seat board 6; Outer wall is provided with the insulation system that the sleeve 9, insulation sleeve 8 of high-strength insulating topping 10 and the pad 11 that is connected as a single entity with it and insulating pad 3 have formed more reliable a, more reasonable structure, thoroughly blocked stray electrical current by the path of bridge pad leakage current in Bridge Pier and the civil engineering structure.
A kind of insulation spherical steel support provided by the utility model is not limited only to above-mentioned form, but no matter be to adopt which kind of form, as long as structure is identical with the utility model, all falls into protection domain of the present utility model.
Claims (3)
- One kind the insulation spherical steel support; comprise upper base plate, ball core and lower seat board; upper base plate is provided with the upper stone bolt that passes pre-embedded steel slab at the bottom of the beam; lower seat board is provided with lower stone bolt; the threaded portion of upper stone bolt and lower stone bolt is connected with sleeve; it is characterized in that: the outer wall of described sleeve is provided with the high-strength insulating topping, is provided with insulating pad between the pre-embedded steel slab at the bottom of upper base plate and the beam, and the screw rod outer wall of upper stone bolt and lower stone bolt is provided with insulation sleeve.
- 2. a kind of insulation spherical steel support according to claim 1, it is characterized in that: the top of described insulation sleeve is provided with the pad that is connected as a single entity with it.
- 3. a kind of insulation spherical steel support according to claim 1 is characterized in that: pre-embedded steel slab at the bottom of the insulation sleeve of described upper stone bolt screw rod outer wall passes upper base plate, insulating pad and partly passes beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206262983U CN202899030U (en) | 2012-11-23 | 2012-11-23 | Insulating spherical steel supporting seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206262983U CN202899030U (en) | 2012-11-23 | 2012-11-23 | Insulating spherical steel supporting seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202899030U true CN202899030U (en) | 2013-04-24 |
Family
ID=48119720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206262983U Expired - Lifetime CN202899030U (en) | 2012-11-23 | 2012-11-23 | Insulating spherical steel supporting seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202899030U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149549A (en) * | 2016-08-16 | 2016-11-23 | 苏州海德新材料科技股份有限公司 | A kind of insulated leg |
| CN107346877A (en) * | 2016-05-04 | 2017-11-14 | 沈阳铝镁设计研究院有限公司 | A kind of insulation installation structure of potroom cable testing bridge |
-
2012
- 2012-11-23 CN CN2012206262983U patent/CN202899030U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346877A (en) * | 2016-05-04 | 2017-11-14 | 沈阳铝镁设计研究院有限公司 | A kind of insulation installation structure of potroom cable testing bridge |
| CN106149549A (en) * | 2016-08-16 | 2016-11-23 | 苏州海德新材料科技股份有限公司 | A kind of insulated leg |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 053000 Hengshui city of Hebei Province North Taocheng District industrial base rubber road No. 1 Patentee after: Zhongyu Tiexin Transportation Technology Co.,Ltd. Address before: 053000 Hengshui city of Hebei Province North Taocheng District industrial base rubber road No. 1 Patentee before: HENGSHUI ZHONGTIEJIAN ENGNIEERING RUBBER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
|
| CX01 | Expiry of patent term |