CN213712150U - Connecting device for jacking pipe of nodular cast iron pipe - Google Patents
Connecting device for jacking pipe of nodular cast iron pipe Download PDFInfo
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- CN213712150U CN213712150U CN202022624620.6U CN202022624620U CN213712150U CN 213712150 U CN213712150 U CN 213712150U CN 202022624620 U CN202022624620 U CN 202022624620U CN 213712150 U CN213712150 U CN 213712150U
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Abstract
The utility model discloses a connecting device for a top pipe of a nodular cast iron pipe, which comprises a connecting piece, a socket retainer ring, a reinforcing plate and the like, wherein an arc-shaped groove is formed on the reinforcing plate, a steel plate is welded, the contact area between the reinforcing plate and the cast iron pipe is increased, and the top thrust borne by a retainer ring can be effectively transmitted; the gusset is the wedge, and one end links to each other with the wire net for the concrete, has fixed the position of wire net, has strengthened the intensity of concrete, and the other end links to each other with the retaining ring, has protected concrete layer not to harm, makes the push pipe can bear great jacking force, has satisfied the internal quality of push pipe and construction needs, and the annular piece external diameter is less than the concrete external diameter, makes the outward appearance unanimous between the push pipe behind the coating concrete layer, has guaranteed external quality, and the device can prefabricate in advance according to the needs of cast tube specification.
Description
Technical Field
The utility model belongs to plumbing construction field, concretely relates to a connecting device that is used for nodular cast-iron pipe push pipe.
Background
The nodular cast iron pipe jacking pipe is formed by coating a layer of concrete mortar on the outer layer of a standard nodular cast iron pipe of a T-shaped connector and tightly wrapping the nodular cast iron pipe in the concrete layer, so that jacking resistance can be reduced during jacking construction, all parts of the jacking pipe are stressed evenly, and the cast iron pipe part can be protected from being damaged.
The length of the top pipe of the nodular cast iron pipe is 4 meters and 6 meters, the specification is larger than 600mm, the weight is 3-10 tons, the construction length of the pipeline is more than 200 meters, the jacking force is used for overcoming the frictional resistance of soil, the self gravity and the pressure of a soil layer during construction, the jacking force is usually 200-1000 tons, the strength of concrete is usually 30-50 MPa, and the high jacking force cannot be borne. In order to protect the concrete layer from being damaged, the jacking force applied to the socket baffle ring needs to be uniformly transmitted to the outer wall of the nodular cast iron pipe through the rigid connecting piece, so that the installation requirement of the long-distance jacking pipe is met.
Disclosure of Invention
An object of the utility model is to provide a connecting device for nodular cast-iron pipe push pipe.
For realizing the purpose the utility model adopts the technical proposal that:
the connecting device for the jacking pipe of the nodular cast iron pipe comprises a socket check ring, wherein a plurality of rigid connecting pieces are welded on one side of the socket check ring in a surrounding mode, each rigid connecting piece comprises an annular block connected with the socket check ring, a rib plate is fully welded in the middle of the rear end of each annular block, the lower end faces of the annular blocks and the rib plates are cut into arc-shaped end faces matched with the outer surface of the nodular cast iron pipe, an arc-shaped groove is formed in the lower portion, close to the tail end, of each rib plate, and a reinforcing plate is fixedly welded in each arc-shaped groove.
Furthermore, the whole upper end face of the rib plate is in an inclined plate shape, the height of the front end of the rib plate is consistent with that of the annular block, and the height of the rib plate is gradually reduced from the front end to the rear end.
Furthermore, the upper end face and the two sides of the reinforcing plate are matched with the arc-shaped grooves and are connected with the arc-shaped grooves in a full-welding mode, and the lower end face of the reinforcing plate is matched with the contacted nodular cast iron pipe jacking pipe.
Furthermore, the upper end face of the annular block is an arc-shaped end face with the radian identical to that of the lower end face, and the arc radius of the upper end face is smaller than the outer diameter of the concrete poured outside the nodular cast iron pipe.
Further, the number of rigid connectors is 2-5, and evenly distributed is on the circumference of socket retaining ring one side.
When the socket retaining ring is applied to the corresponding nodular cast iron pipe jacking pipe, the socket retaining ring is sleeved at the socket of the nodular cast iron pipe jacking pipe before concrete is poured, one end of the rigid connecting piece which is welded faces to one side far away from the tail end of the socket, the contact parts of the socket retaining ring and the rigid connecting piece with the nodular cast iron pipe jacking pipe are required to be continuously welded and meet the requirements of a welding process, and parts in the connecting device are all ordinary carbon.
The utility model has the advantages that:
the utility model is sleeved at the socket of the nodular cast iron pipe jacking pipe through the annular socket retaining ring, is used for fixing the concrete material of the nodular cast iron pipe jacking pipe and bearing the jacking force applied to the jacking pipe in the construction process, rigid connecting pieces are uniformly distributed at the stress end of the socket check ring and comprise an annular block, a rib plate and a reinforcing plate which are matched with the outer surface of the nodular cast iron pipe top pipe, the outer diameter of the annular block is 2 mm smaller than the outer diameter of concrete, so that after the concrete is poured outside the nodular cast iron pipe, the two ends of the top pipe are at the same height, the rib plate is of a wedge-shaped structure, the height of the two end heads is determined according to the specification of the cast iron pipe, the height of the end head which is in contact with the annular block is the same as that of the annular block, the two sides of the rib plate are connected with the concrete through the steel wire mesh, the functions of fixing the position of the steel wire mesh and enhancing the strength of the concrete are achieved, the reinforcing plate is welded on the arc-shaped groove, the contact area of the rib plate and the cast iron pipe can be increased, and the jacking force borne by the check ring is effectively transmitted.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic view of the connection between the present invention and a top pipe of a nodular cast iron pipe;
fig. 2 is a schematic structural view and a front view of the rigid connector of the present invention;
fig. 3 is a schematic structural view and a side view of the rigid connector of the present invention;
fig. 4 is a schematic structural view, and particularly a top view, of the rigid connector of the present invention;
Detailed Description
The present invention will be further described with reference to the following examples.
A connecting device for a nodular cast iron pipe jacking pipe is shown in figure 1, and takes DN1000 cast iron pipe as an example, and comprises a socket check ring 4 sleeved at a socket of a nodular cast iron pipe jacking pipe 6, wherein the joint of the socket check ring 4 and the nodular cast iron pipe jacking pipe 6 is in full-welding connection, the socket check ring 4 is formed by cutting a steel plate with the thickness of 25-30 mm and is in a ring shape and used for fixing concrete 5 and bearing the jacking force applied to the jacking pipe in the construction process, one side, far away from the socket end, of the socket check ring 4 is welded with a plurality of rigid connecting pieces in a surrounding mode, the number of the rigid connecting pieces is 2-5, the rigid connecting pieces are uniformly distributed on the circumference of the socket check ring 4, and 5 layers of concrete can.
As shown in fig. 2-4, the rigid connector comprises an annular block 1 connected with a socket retainer ring 4, the upper end surface of the annular block 1 is a circular arc end surface with the same radian as the lower end surface, and the circular arc radius of the upper end surface is smaller than the outer diameter of concrete 5 poured outside the nodular cast iron pipe. In the embodiment, the annular block 1 is formed by cutting a steel plate with the thickness of 25-30 mm, the inner and outer diameters of the annular block are determined according to the specification of a cast iron pipe, for example, DN1000 cast iron pipe has the inner diameter of 635-1255 mm, the outer diameter of 731-1405 mm, the width of the annular block is 100-120 mm, the outer diameter of the specific annular block 1 is 2 mm smaller than the outer diameter of the concrete 5, and after the concrete 5 is poured outside the cast iron pipe, the two ends of the jacking pipe are at the same height. The middle position of the rear end of the annular block 1 is connected with a rib plate 2 in a full-welding mode, the upper end face of the rib plate 2 is integrally in an inclined plate shape, the height of the front end of the rib plate 2 is consistent with that of the annular block 1, and the height of the rib plate 2 is gradually reduced from the front end to the rear end. The rib plate 2 is formed by cutting a steel plate with the thickness of 25-30 mm and is of a wedge-shaped structure, the height of two end heads of the rib plate is determined according to the specification of the cast iron pipe, and the height of the end, which is in contact with the annular block 1, of the rib plate is 46-73 mm, and the height of the end, which is in contact with the annular block 1, of the rib plate; the other end is 15-20 mm high, 20mm from the rear end, an arc-shaped groove is cut, the groove width is 45mm, the groove height is 10mm, and the two sides of the rib plate 2 are connected with the concrete 5 through steel wire meshes, so that the functions of fixing the positions of the steel wire meshes and enhancing the strength of the concrete 5 are achieved. The arc wall is internally fixedly welded with a reinforcing plate 3, and the reinforcing plate 3 is 50-70 mm long, 44mm wide and 9mm thick. The inner diameter and the outer diameter of the cast iron pipe are determined according to the specification of the cast iron pipe, for example DN1000 cast iron pipe, the inner diameter is 635-1255 mm; the outer diameter is 1 mm smaller than that of the arc-shaped groove so as to ensure good welding between the two. The reinforcing plate 3 is welded on the arc-shaped groove, so that the contact area of the reinforcing plate 2 and the cast iron pipe can be increased, and the jacking force borne by the check ring can be effectively transmitted.
The lower end faces of the annular block 1 and the rib plate 2 are cut into arc-shaped end faces matched with the outer surface of the nodular cast iron pipe, the joint of the arc-shaped end faces and the nodular cast iron pipe is in full-weld connection, and the lower end face of the reinforcing plate 3 is matched with and in full-weld connection with the contacted nodular cast iron pipe jacking pipe 6. The parts are all common carbon. All parts needing welding are continuously welded and meet the requirements of a welding process.
The utility model is prepared according to the following process steps:
1) cutting a thick steel plate into an annular block 1, a rib plate 2, a reinforcing plate 3 and a socket check ring 4 according to the size requirement, forming an arc-shaped groove in the rib plate 2, and welding the annular block 1 and the rib plate 2, and welding the rib plate 2 and the reinforcing plate 3 together in sequence to obtain a rigid connecting piece;
2) welding a rigid connecting piece at the socket end of the top pipe of the cast iron pipe, wherein the distance is controlled to be the depth of the socket inserted into the bell mouth of the top pipe of the cast iron pipe, the thickness of a socket retainer ring is added, and a 10mm gap is left between the socket retainer ring and the rigid connecting piece so as to facilitate installation and adjustment;
3) welding the steel wire mesh on the connecting piece, then placing the connecting piece into a cylindrical mould, standing vertically, pouring concrete 5, and after the concrete 5 is poured, sleeving the spigot retaining ring on the cast iron pipe.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are illustrative and not exclusive in all respects. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (5)
1. The connecting device for the jacking pipe of the nodular cast iron pipe is characterized by comprising a socket check ring, wherein a plurality of rigid connecting pieces are welded on one side of the socket check ring in a surrounding mode, each rigid connecting piece comprises an annular block connected with the socket check ring, a rib plate is fully welded in the middle of the rear end of each annular block, the lower end faces of the annular blocks and the rib plates are cut into arc-shaped end faces matched with the outer surface of the nodular cast iron pipe, an arc-shaped groove is formed in the lower portion, close to the tail end, of each rib plate, and a reinforcing plate is fixedly welded in each arc-shaped groove.
2. The connecting device for the jacking pipe of the ductile cast iron pipe according to claim 1, wherein the upper end surface of the rib plate is integrally in a shape of an inclined plate, the height of the front end head of the rib plate is consistent with that of the annular block, and the height of the rib plate is gradually reduced from the front end head to the rear end head.
3. The connecting device for the jacking pipe of the nodular cast iron pipe as claimed in claim 1, wherein the upper end surface and both sides of the reinforcing plate are fitted with the arc-shaped grooves and are connected by full welding, and the lower end surface of the reinforcing plate is fitted with the jacking pipe of the nodular cast iron pipe which is in contact with the reinforcing plate.
4. The joint device for the jacking pipe of the ductile iron pipe as claimed in claim 1, wherein the upper end surface of the annular block is provided as a circular arc end surface having the same arc as that of the lower end surface, and the circular arc radius of the upper end surface is smaller than the outer diameter of the concrete poured outside the ductile iron pipe.
5. The connecting device for the jacking pipe of the ductile cast iron pipe as claimed in claim 1, wherein the number of the rigid connecting pieces is 2-5, and the rigid connecting pieces are uniformly distributed on the circumference of one side of the socket check ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022624620.6U CN213712150U (en) | 2020-11-13 | 2020-11-13 | Connecting device for jacking pipe of nodular cast iron pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022624620.6U CN213712150U (en) | 2020-11-13 | 2020-11-13 | Connecting device for jacking pipe of nodular cast iron pipe |
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| CN213712150U true CN213712150U (en) | 2021-07-16 |
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| CN202022624620.6U Active CN213712150U (en) | 2020-11-13 | 2020-11-13 | Connecting device for jacking pipe of nodular cast iron pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059807A (en) * | 2022-06-30 | 2022-09-16 | 安钢集团永通球墨铸铁管有限责任公司 | Short-length micro jacking pipe and manufacturing process thereof |
| CN116753360A (en) * | 2023-08-11 | 2023-09-15 | 江苏日升电力机械有限公司 | Connecting device for top pipe of spheroidal graphite cast iron pipe |
-
2020
- 2020-11-13 CN CN202022624620.6U patent/CN213712150U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059807A (en) * | 2022-06-30 | 2022-09-16 | 安钢集团永通球墨铸铁管有限责任公司 | Short-length micro jacking pipe and manufacturing process thereof |
| CN115059807B (en) * | 2022-06-30 | 2024-02-13 | 安钢集团永通球墨铸铁管有限责任公司 | Short-length micro-jacking pipe and manufacturing process thereof |
| CN116753360A (en) * | 2023-08-11 | 2023-09-15 | 江苏日升电力机械有限公司 | Connecting device for top pipe of spheroidal graphite cast iron pipe |
| CN116753360B (en) * | 2023-08-11 | 2023-10-20 | 江苏日升电力机械有限公司 | Connecting device for top pipe of spheroidal graphite cast iron pipe |
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