CN219671111U - Internal tooth block prestress hole forming die for cast-in-place concrete continuous box girder box chamber - Google Patents
Internal tooth block prestress hole forming die for cast-in-place concrete continuous box girder box chamber Download PDFInfo
- Publication number
- CN219671111U CN219671111U CN202321316517.2U CN202321316517U CN219671111U CN 219671111 U CN219671111 U CN 219671111U CN 202321316517 U CN202321316517 U CN 202321316517U CN 219671111 U CN219671111 U CN 219671111U
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- steel
- sleeves
- tooth block
- small diameter
- cylinder opening
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The utility model relates to a cast-in-place concrete continuous box girder box chamber inner tooth block prestress hole forming die which comprises two circular section steel sleeves and two screw rods, wherein the diameter of one end cylinder opening of each steel sleeve is larger than that of the other end cylinder opening, a diaphragm plate is welded in each steel sleeve, a sealing plate is welded on the large diameter end cylinder opening, the two steel sleeves are respectively arranged on the two screw rods in a penetrating mode, an outer nut is screwed on the outer side of the sealing plate of each screw rod, an inner nut is screwed on the side, facing the small diameter end of each steel sleeve, of each diaphragm plate, the small diameter ends of the two steel sleeves are opposite, and the two screw rods are connected at the small diameter ends of the two steel sleeves through threaded sleeves. The utility model is of a split structure, and when the die is disassembled, the die is pulled to two ends respectively, so that the die can be pulled out easily; two ends of the formed tooth block prestress hole are horn mouths, so that the prestress rib can be conveniently penetrated.
Description
Technical Field
The utility model belongs to the technical field of bridge construction, relates to cast-in-place concrete box girder construction, and in particular relates to a cast-in-place concrete box girder box chamber inner tooth block prestress hole forming die.
Background
As shown in fig. 1, in the section casting construction of the cantilever end of the cast-in-place concrete continuous box girder 10, in order to ensure the connection strength between the sections, a concrete tooth block 9 is generally arranged on the box indoor top plate of each section, a pre-stressing hole is reserved on the tooth block, and a pre-stressing rib 11 is required to be penetrated in the pre-stressing hole of each tooth block and stretched in the later period.
At present, when constructing, the PVC pipe is pre-buried in tooth piece concrete generally, and when tooth piece concrete is demolished, pulls out the PVC pipe, forms prestressing force hole. However, the PVC pipe is difficult to dismantle due to the fact that the PVC pipe is firmly bonded with the concrete during form removal.
Disclosure of Invention
The utility model aims to solve the problems and provides a cast-in-place concrete continuous box girder box chamber inner tooth block prestress hole forming die which is convenient to disassemble.
The technical scheme of the utility model is as follows:
the utility model provides a continuous case roof beam case room internal tooth piece prestressing force hole forming die of cast in situ concrete which characterized in that: comprises two round section steel sleeves and two screws; the diameter of a cylinder opening at one end of each steel sleeve is larger than that of the cylinder opening at the other end, a diaphragm is welded in each steel sleeve, a sealing plate is welded at the cylinder opening at the large diameter end of each steel sleeve, two steel sleeves are respectively arranged on two screws in a penetrating mode, the screws penetrate through the sealing plate and the diaphragm along the axis of the steel sleeves, an outer nut is screwed on the outer side of the sealing plate of each steel sleeve, and an inner nut is screwed on the side, facing the small diameter end of each steel sleeve, of each diaphragm; the small diameter ends of the two steel sleeves are opposite, and the two screws are connected through the threaded sleeve at the small diameter ends of the two steel sleeves.
The utility model is of a split structure, the diameters of the two ends are larger than the middle diameter, and when the die is disassembled, the two screws are separated and respectively pulled towards the two ends, so that the die can be pulled out easily; and because the diameters of the two ends of the die are larger, the two ends of the formed prestressed hole are bell mouths, so that the later-stage prestressed tendons can be conveniently penetrated.
Drawings
FIG. 1 is a schematic diagram of a tooth block arrangement in a cast-in-place concrete continuous box girder box;
FIG. 2 is a schematic view of the overall structure of the present utility model;
FIG. 3 is a schematic diagram of a split construction of the present utility model;
FIG. 4 is a schematic view of the present utility model in a state of being used for pouring tooth blocks in a box girder box;
fig. 5 is a schematic view of the utility model in a disassembled state.
Detailed Description
As shown in fig. 2 and 3, the utility model comprises two circular section steel sleeves 1 and two screw rods 4, wherein the diameter of one end cylinder opening of each steel sleeve is larger than that of the other end cylinder opening, a diaphragm plate 2 is welded in each steel sleeve 1, a sealing plate 3 is welded at the large diameter end cylinder opening of each steel sleeve, the two steel sleeves 1 are respectively penetrated on the two screw rods 4, the screw rods 4 penetrate through the sealing plate 3 and the diaphragm plate 2 along the axial center of the steel sleeve, an outer nut 5 is screwed on each screw rod 4 outside the sealing plate 3 of the steel sleeve, and an inner nut 6 is screwed on one side of the diaphragm plate 2 towards the small diameter end of the steel sleeve; the small diameter ends of the two steel sleeves 1 are opposite, and the two screws 4 are connected through a threaded sleeve 7 at the small diameter ends of the two steel sleeves.
The integral structure shown in fig. 2 of the utility model rotates two screws relatively, wherein one screw 4 is separated from the threaded sleeve 7, and the two screws are separated to form a split structure shown in fig. 3.
The steel sleeves can be rolled by adopting steel plates during processing, and the sum of the lengths of the two steel sleeves is not smaller than the length of the inner tooth blocks in the box chamber of the concrete box girder.
As shown in fig. 4, after the internal tooth block steel bars in the box chamber of the concrete box girder are bound, the internal tooth block steel bars are placed in a tooth block steel bar framework, and the small diameter ends of the two steel sleeves 1 are tightly propped up through two external nuts 5. Installing a tooth block template, reserving holes on the template, enabling the end parts of two screws and two outer nuts to be exposed out of the template, plugging the periphery of the outer nuts, avoiding slurry leakage, and then pouring tooth block concrete.
As shown in fig. 5, when the mold is removed, the two screws 4 are relatively rotated to separate the two screws, and then the screws are respectively pulled out towards the two ends of the tooth block, and the inner nuts 6 on the two screws are blocked by the diaphragm plate 2, so that the two steel sleeves 1 can be pulled out from the tooth block concrete together. The two ends of the prestressed hole 8 formed on the tooth block 9 are horn mouths, so that the prestressed tendons can be conveniently penetrated.
Claims (1)
1. The utility model provides a continuous case roof beam case room internal tooth piece prestressing force hole forming die of cast in situ concrete which characterized in that: comprises two round section steel sleeves and two screws; the diameter of a cylinder opening at one end of each steel sleeve is larger than that of the cylinder opening at the other end, a diaphragm is welded in each steel sleeve, a sealing plate is welded at the cylinder opening at the large diameter end of each steel sleeve, two steel sleeves are respectively arranged on two screws in a penetrating mode, the screws penetrate through the sealing plate and the diaphragm along the axis of the steel sleeves, an outer nut is screwed on the outer side of the sealing plate of each steel sleeve, and an inner nut is screwed on the side, facing the small diameter end of each steel sleeve, of each diaphragm; the small diameter ends of the two steel sleeves are opposite, and the two screws are connected through the threaded sleeve at the small diameter ends of the two steel sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321316517.2U CN219671111U (en) | 2023-05-28 | 2023-05-28 | Internal tooth block prestress hole forming die for cast-in-place concrete continuous box girder box chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321316517.2U CN219671111U (en) | 2023-05-28 | 2023-05-28 | Internal tooth block prestress hole forming die for cast-in-place concrete continuous box girder box chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219671111U true CN219671111U (en) | 2023-09-12 |
Family
ID=87893147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321316517.2U Active CN219671111U (en) | 2023-05-28 | 2023-05-28 | Internal tooth block prestress hole forming die for cast-in-place concrete continuous box girder box chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219671111U (en) |
-
2023
- 2023-05-28 CN CN202321316517.2U patent/CN219671111U/en active Active
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