CN201915398U - End plate of pretressed reinforced concrete hollow pile - Google Patents
End plate of pretressed reinforced concrete hollow pile Download PDFInfo
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- CN201915398U CN201915398U CN2010206527608U CN201020652760U CN201915398U CN 201915398 U CN201915398 U CN 201915398U CN 2010206527608 U CN2010206527608 U CN 2010206527608U CN 201020652760 U CN201020652760 U CN 201020652760U CN 201915398 U CN201915398 U CN 201915398U
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Abstract
The utility model relates to an end plate of a prestressed reinforced concrete hollow pile, which comprises an end plate body, wherein the end plate body is provided with an end surface plate and a skirt plate, the outer profile of the end surface plate is circular, or regular polygon-shaped, or rectangular, or X-shaped or U-shaped, a through hole is arranged in the middle part of the end surface plate, a connecting through hole is arranged at the position of the end plate body, which is positioned at the outer side of the through hole, the connecting through hole is used for connecting a prestreesed reinforced concrete end in a pile body, the connecting through hole comprises a large through hole and a small through hole, the large through hole and the small through hole are connected with each other through a chute, the small through hole is a counter bored hole, the large through hole is a threaded hole, the thread of the threaded hole is a coarse thread, and the thread pitch of the thread is 2-4mm. In order to overcome the technical prejudice that the thread on the threaded hole on a thin-wall plate is only designed to be a fine thread, under the premise that the connecting strength is ensured, the service life of a connecting bolt between the end plate and a stretch-draw anchoring plate is prolonged, the wire sliding phenomenon generated in matching of the thread on the connecting bolt and the thread of the threaded hole on the end surface plate is greatly reduced, and the reject rate of the pile, the end plate and the connecting bolt is reduced.
Description
Technical field:
The present invention relates to the prestressed reinforced concrete hollow pile, particularly prestressed reinforced concrete hollow pile end plate.
Background technology:
The end plate of pre existing stress reinforced concrete hollow stake, as Chinese patent " hollow square pile welded end plate (patent No. 2009203109890) ", contain a square block board that makes by casting, the middle part has and the corresponding cast through holes of barrette hollow die cavity on the described square block board, also be laid with the reinforcing rib connecting through hole that matches and be connected with hollow square pile stiffener termination on the described square block board, the reinforcing rib connecting through hole comprises large through-hole and small through hole, link to each other by chute hole between large through-hole and the small through hole, large through-hole is a screwed hole, small through hole is a counterbore, after screwed hole is passed in the stiffener termination, slip in the counterbore along chute hole, the connecting bolt that is used for tensioning hollow square pile stiffener cooperates with screwed hole, the motion of spinning of connecting bolt and screwed hole, make connecting bolt move along its axial traction hollow square pile welded end plate, reaching stretches to the hollow square pile stiffener produces the purpose give stress.The screw thread of the screwed hole of this patent is a fine thread, screw thread on the connecting bolt also is a fine thread, though fine thread pitch is little, lift angle is little, self-locking performance is better, the intensity height, but, because of fine thread has defectives such as not wear-resisting, easy slide fastener, therefore, in use, the fine thread on the connecting bolt often appears and wearing and tearing appear in the fine thread of the screwed hole that matches with connecting bolt, produce connecting bolt and screwed hole slide fastener phenomenon, cause scrapping of whole prestressed reinforced concrete hollow pile.
Summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and can realize and the end plate of the prestressed reinforced concrete hollow pile that connecting bolt reliably is connected.
Solution of the present invention: contain the end plate body, there is through hole at the middle part of end plate body, the position of through hole is corresponding with the hollow die cavity of pile body with size, also be provided with connecting through hole on the end plate body in the through hole outside, what connecting through hole was used for connecting pile body gives the stress steel bar end, connecting through hole comprises large through-hole and small through hole, and large through-hole is a screw, and the screw thread of screw is a coarse thread.The screw thread of screw adopts coarse thread, overcome the technology prejudice that the screw thread of screw on the thin-walled part can only be designed to fine thread, under the prerequisite that guarantees bonding strength, prolonged the application life of the connecting bolt between end plate and the stretch-draw anchor plate again, significantly reduce the stripped thread phenomenon that produces in the threaded engagement of screw on screw thread on the connecting bolt and the end plates, reduced stake, end plate and connecting bolt percent defective.
End plates and skirtboard are arranged on the end plate body, linked to each other by chute between the large through-hole on the end plates and the small through hole, small through hole is a counterbore; End plates are round nose panel or rectangular end panel, four angles of rectangular end panel be shaped as four equal circular arcs, or four right angles that equate, or four 45 ° of chamferings that equate, or circular arc mixes setting with the right angle, or circular arc mixes setting with 45 ° of chamferings, or 45 ° of chamferings are mixed setting with the right angle, or orthodrome mixes setting with the roundlet arc, or circular arc, right angle and 45 ° of chamferings are mixed and are provided with.
The pitch of the screw thread of screw is 2--4mm on screw thread on the connecting bolt and the end plates.
The outline of end plates is circular, or regular polygon, or rectangle, or X-shaped, or U-shaped.
For outline is regular polygon or rectangular end plates, is equipped with small through hole in each bight at least, between two adjacent straight flanges of end plates by the arc transition.
Circular arc outermost between two adjacent straight flanges of end plates is to the distance at small through hole center, that is to say that the arc radius between two adjacent straight flanges of end plates is the 10-40 millimeter.
Error between the arc radius is less than 2 millimeters.
Vertical distance between the small through hole center on the straight flange of end plates and the straight flange of end plates equals the radius size of the circular arc between two adjacent straight flanges of end plates.
The utility model has the advantages that: the application life that has prolonged the connecting bolt between end plate and the stretch-draw anchor plate, significantly reduce the stripped thread phenomenon that produces in the threaded engagement of screw on screw thread on the connecting bolt and the end plates, reduced stake, end plate and connecting bolt percent defective.
Description of drawings:
Fig. 1 is foursquare example structure schematic diagrames for end plates of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is rectangular example structure schematic diagrames for end plates of the present utility model;
Fig. 4 is circular example structure schematic diagrames for end plates of the present utility model;
Fig. 5 is a connecting through hole structural representation of the present utility model.
Among the figure: 1-square end faces plate; The 2-connecting through hole; The 3-through hole; The 4-skirtboard; 5-round nose panel; 6-rectangle end plates; The 7-small through hole; The 8-chute; The 9-large through-hole.
The specific embodiment:
Among Fig. 1, there is through hole 3 at the middle part of square end faces plate 1, the position of through hole 3 is corresponding with the hollow die cavity of pile body with size, also be provided with connecting through hole 2 on the square end faces plate 1 in through hole 3 outsides, what connecting through hole 2 was used for connecting pile body gives the stress steel bar end, the arc radius R1 of four arc chord angles of square end faces plate 1 is 18 millimeters, and the arc radius R1 of four arc chord angles equals the vertical distance of small through hole 7 centers to the side of square end faces plate 1.Four angles of square end faces plate 1 also can be 45 ° of chamferings, and the length of bevel edge is 18 millimeters.Four angles of square end faces plate 1 also can be combined by two arc chord angles and two 45 ° of chamferings, and the arc radius R1 of arc chord angle is 18 millimeters, and the length of the bevel edge of 45 ° of chamferings is 18 millimeters.Four angles of square end faces plate 1 also can be combined by two right angles and two 45 ° of chamferings, also can be formed by two arc chord angles and two right-angle arraies.
Among Fig. 2, the end plate body is made up of square end faces plate 1 and skirtboard 4, and there is through hole 3 at the middle part of square end faces plate 1, also is provided with connecting through hole 2 on the square end faces plate 1 in through hole 3 outsides.
Among Fig. 3, there is through hole 3 at the middle part of rectangle end plates 5, the position of through hole 3 is corresponding with the hollow die cavity of pile body with size, also be provided with connecting through hole 2 on the rectangle end plates 5 in through hole 3 outsides, what connecting through hole 2 was used for connecting pile body gives stress steel bar end, the arc radius R of four arc chord angles of rectangle end plates 5
2Be 32 millimeters, the arc radius R of four arc chord angles
2Equal the vertical distance of small through hole 7 centers to the side of rectangle end plates 5.The various combination at four angles of rectangle end plates 5 is identical with four angle various combinations of square end faces plate 1.
Among Fig. 4, there is through hole 3 at the middle part of round nose panel 6, and the position of through hole 3 is corresponding with the hollow die cavity of pile body with size, also is provided with connecting through hole 2 on the rectangle end plates 6 in through hole 3 outsides, and what connecting through hole 2 was used for connecting pile body gives the stress steel bar end.
Among Fig. 5, connecting through hole 2 comprises large through-hole 9 and small through hole 7, is linked to each other by chute 8 between large through-hole 9 and the small through hole 7, and small through hole 7 is a counterbore, and large through-hole 9 is a screw, and the screw thread of screw is a coarse thread, and the pitch of screw thread is 3 millimeters.
Claims (8)
1. the end plate of prestressed reinforced concrete hollow pile contains the end plate body, and there is through hole at the middle part of end plate body, also be provided with connecting through hole on the end plate body in the through hole outside, connecting through hole comprises large through-hole and small through hole, and large through-hole is a screw, and the screw thread that it is characterized in that screw is a coarse thread.
2. the end plate of prestressed reinforced concrete hollow pile according to claim 1 is characterized in that end plates and skirtboard are arranged on the end plate body, is linked to each other by chute between the large through-hole on the end plates and the small through hole, and small through hole is a counterbore; End plates are round nose panel or rectangular end panel, four angles of rectangular end panel be shaped as four equal circular arcs, or four right angles that equate, or four 45 ° of chamferings that equate, or circular arc mixes setting with the right angle, or circular arc mixes setting with 45 ° of chamferings, or 45 ° of chamferings are mixed setting with the right angle, or orthodrome mixes setting with the roundlet arc, or circular arc, right angle and 45 ° of chamferings are mixed and are provided with.
3. the end plate of prestressed reinforced concrete hollow pile according to claim 1 and 2, the pitch that it is characterized in that screw thread is 2--4mm.
4. the end plate of prestressed reinforced concrete hollow pile according to claim 3, the outline that it is characterized in that end plates is for circular, or regular polygon, or rectangle, or X-shaped, or U-shaped.
5. the end plate of prestressed reinforced concrete hollow pile according to claim 4, it is characterized in that for outline be regular polygon or rectangular end plates, at least be equipped with small through hole in each bight, between two adjacent straight flanges of end plates by arc transition.
6. the end plate of prestressed reinforced concrete hollow pile according to claim 5, it is characterized in that circular arc outermost between two adjacent straight flanges of end plates to the distance at small through hole center, that is to say that the arc radius between two adjacent straight flanges of end plates is the 10-40 millimeter.
7. the end plate of prestressed reinforced concrete hollow pile according to claim 6 is characterized in that error between the arc radius is less than 2 millimeters.
8. the end plate of prestressed reinforced concrete hollow pile according to claim 7 is characterized in that vertical distance between the straight flange of small through hole center on the straight flange of end plates and end plates equals the radius size of the circular arc between two adjacent straight flanges of end plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206527608U CN201915398U (en) | 2010-12-10 | 2010-12-10 | End plate of pretressed reinforced concrete hollow pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206527608U CN201915398U (en) | 2010-12-10 | 2010-12-10 | End plate of pretressed reinforced concrete hollow pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915398U true CN201915398U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206527608U Expired - Lifetime CN201915398U (en) | 2010-12-10 | 2010-12-10 | End plate of pretressed reinforced concrete hollow pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915398U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704471A (en) * | 2012-05-22 | 2012-10-03 | 张俊峰 | Prestress solid concrete preformed pile |
| CN103321218A (en) * | 2013-05-30 | 2013-09-25 | 上海大禺预制构件有限公司 | Prestressed centrifugal corrosion-resistant hollow square pile |
-
2010
- 2010-12-10 CN CN2010206527608U patent/CN201915398U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704471A (en) * | 2012-05-22 | 2012-10-03 | 张俊峰 | Prestress solid concrete preformed pile |
| CN103321218A (en) * | 2013-05-30 | 2013-09-25 | 上海大禺预制构件有限公司 | Prestressed centrifugal corrosion-resistant hollow square pile |
| CN103321218B (en) * | 2013-05-30 | 2016-01-27 | 上海大禺预制构件有限公司 | Prestressed centrifugally Corrosion-resistant hollow square pile |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
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| CX01 | Expiry of patent term |