Steel belt corrugated pipe

Abstract

The utility model belongs to the technical field of corrugated pipes, and particularly relates to a steel belt corrugated pipe which comprises a plastic pipe body, a corrugated pipe is arranged on the outer surface of the pipe body, the corrugated pipe is hollow and comprises an inner steel belt and a plastic layer wrapping the outer wall of the steel belt, and the steel belt comprises a top plate provided with a plurality of wave crests. The two ends of the top plate are connected with oppositely-arranged arc plates correspondingly. The top plate, the pipe body and the corrugated pipe are provided with the plurality of wave crests, so that the longitudinal buffering effect can be achieved, the impact resistance of the steel belt corrugated pipe and the contact surface supporting force of the wave crests of the steel belt are improved, the ring stiffness of the steel belt corrugated pipe is greatly improved, the restorability of the steel belt corrugated pipe is improved, and the service life of the steel belt corrugated pipe is prolonged. The original shape can be quickly restored after deformation; the steel belts can improve the transverse strength of the corrugated pipe and the connecting strength between the corrugated pipe and the pipe body, transverse breakage of the corrugated pipe can be prevented, and the service life of the corrugated pipe is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrugated pipes, and in particular relates to a steel belt corrugated pipe. Background Art

[0002] Steel belt corrugated pipe is a pipe with a special structure. Steel belt is embedded inside the corrugated pipe. It combines the strength of steel belt and the flexibility of corrugated pipe, and is widely used in various underground engineering construction fields. Compared with ordinary plastic corrugated pipes, steel belt corrugated pipes significantly improve the ring stiffness and compressive resistance of the pipe, and can withstand large external loads. Steel belt corrugated pipes are usually made of corrosion-resistant materials such as high-density polyethylene. The inner and outer walls are smooth and not easy to scale. They are suitable for a variety of corrosive environments. The cross-section of traditional steel belt corrugated pipes is mostly a large circular peak shape, with limited compressive resistance, and cannot better play the role of steel belts.

[0003] Chinese patent CN115468054A discloses a connection method for a steel-belt reinforced polyethylene spiral corrugated pipe joint, wherein the corrugated pipe includes a crest region and a trough region connected together, the crest region is connected to the tail of the trough region, and the steel belt in the crest region is coated in an outer polyethylene structure. However, the cross-section of the steel belt in the crest region of the corrugated pipe in the patent is an inverted U-shape, the supporting force of the steel belt is not strong enough, which affects the ring stiffness, and there is only plastic support in the trough region, and no steel belt is set, which makes the corrugated pipe easy to crack in the trough region and has a small ring stiffness. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a steel belt corrugated pipe to solve the problem that the steel belt supporting force is not strong enough and the ring stiffness is small due to the inverted U-shaped cross-section of the corrugated pipe wave peak area.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The steel belt corrugated pipe described in the utility model includes a pipe body made of plastic material, a corrugated tube is arranged on the outer surface of the pipe body, the corrugated tube is hollow, and the corrugated tube includes an inner steel belt and a plastic layer coated on the outer wall of the steel belt, the steel belt includes a top plate provided with a plurality of wave peaks, and the two ends of the top plate are respectively connected with arc plates arranged oppositely.

[0007] Preferably, the cross-section of the top plate is W-shaped.

[0008] Preferably, the steel belt is provided with a plurality of through holes.

[0009] Preferably, the through hole has a shape of circle, plum blossom, pentagon, ellipse, triangle, square, rectangle or parallelepiped.

[0010] Preferably, extension plates are respectively provided at the ends of the two arc plates, extending in a direction away from the top plate.

[0011] Preferably, a folded edge and a buckle plate are fixedly provided on one end of the two extension plates away from the arc plate, respectively, and the folded edge can be inserted between the buckle plate and the plastic layer.

[0012] Preferably, the buckling plate is tilted to match the angle of the folded edge.

[0013] Preferably, the cross-sectional shape of the folded edge is an inverted V-shape, and the cross-sectional shape of the buckled plate is an inverted 7-shape.

[0014] Preferably, the angle formed at the connection between the folded edge and the extension plate is an obtuse angle, and the angle at the corners of the two sides of the buckled plate is an obtuse angle.

[0015] Preferably, a copper plating layer is provided on the surface of the steel strip, an adhesive resin is coated between the inner side of the steel strip and the tube body, and an adhesive resin is coated between the outer side of the steel strip and the plastic layer.

[0016] The beneficial effects of the utility model are:

[0017] The top plate with several wave peaks arranged in the utility model can play a longitudinal buffering role, improve the impact resistance of the steel belt corrugated pipe and the contact surface supporting force at the steel belt wave peaks, greatly improve the ring stiffness of the steel belt corrugated pipe, and the resilience of the steel belt corrugated pipe is improved, and it can quickly return to its original shape after deformation; the steel belt can improve the lateral strength of the corrugated pipe and the connection strength between the corrugated pipe and the pipe body, which can prevent the corrugated pipe from lateral fracture and extend the service life of the corrugated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0020] In the figure: 1, tube body; 2, wave tube; 201, steel belt; 202, plastic layer; 2011, top plate; 2012, arc plate; 2013, extension plate; 2014, folded edge; 2015, buckled plate. DETAILED DESCRIPTION

[0021] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] like Figure 1 , Figure 2As shown, the steel belt corrugated pipe described in the utility model includes a pipe body 1 made of plastic material, a corrugated tube 2 is arranged on the outer surface of the pipe body 1, the corrugated tube 2 is hollow, the corrugated tube 2 includes an inner steel belt 201 and a plastic layer 202 coated on the outer wall of the steel belt 201, the steel belt 201 includes a top plate 2011 provided with a plurality of wave peaks, and arc plates 2012 arranged oppositely are respectively connected to both ends of the top plate 2011.

[0024] The top plate 2011 provided with several wave crests improves the contact surface supporting force at the wave crests of the steel belt 201, greatly improves the ring stiffness of the steel belt corrugated pipe, can withstand higher impact pressure, and has strong recovery after deformation, and can adapt to different construction environments.

[0025] The cross-section of the top plate 2011 is in the shape of a letter W. In other alternative embodiments, two wave peaks are arranged on the top plate 2011, that is, the cross-section of the top plate 2011 is in the shape of a letter V.

[0026] The steel belt 201 is provided with a plurality of through holes, so that the plastic tube body 1 and the plastic layer 202 can be tightly connected, and the steel belt 201 is wrapped between the tube body 1 and the plastic layer 202, so as to ensure that the steel belt 201 is firmly arranged, reduce the risk of delamination and cracking of the steel belt 201 and the plastic layer 202, and improve the ring stiffness.

[0027] The shape of the through hole is circular, plum blossom, pentagonal, elliptical, triangular, square, rectangular or parallelepipedal, so as to ensure that the plastic tube body 1 and the plastic layer 202 at the through hole are firmly connected.

[0028] The ends of the two arc plates 2012 are respectively provided with extension plates 2013 extending away from the top plate 2011. Not only the support between the two adjacent arc plates 2012 is increased, but also the steel belt 201 is arranged between the two adjacent corrugated tubes 2, that is, the steel belt 201 support is increased at the trough, thereby improving the ring stiffness of the steel belt corrugated tube.

[0029] A folded edge 2014 and a buckle plate 2015 are fixedly provided at one end of the two extension plates 2013 away from the arc plate 2012 , respectively. The folded edge 2014 can be inserted between the buckle plate 2015 and the plastic layer 202 .

[0030] The buckle plate 2015 is tilted to match the angle of the folded edge 2014 .

[0031] The cross-sectional shape of the folded edge 2014 is an inverted V-shape, and the cross-sectional shape of the buckled plate 2015 is an inverted 7-shape.

[0032] The angle formed at the connection between the folded edge 2014 and the extension plate 2013 is an obtuse angle, and the angles at the corners of the two sides of the buckled plate 2015 are also obtuse angles.

[0033] The arrangement of the folded edge 2014 and the buckled plate 2015 can connect the steel strips in two adjacent wave tubes 2, further increase the support of the steel strip 201 between the two adjacent wave tubes 2, and improve the ring stiffness of the steel strip corrugated tube.

[0034] The above arrangement facilitates the connection between the folded edge 2014 and the snap-fit ​​plate 2015, and can form a bulge between two adjacent corrugated tubes 2, which acts as a reinforcing rib and improves the ring stiffness of the steel belt corrugated tube.

[0035] The surface of the steel strip 201 is provided with a copper plating layer, an adhesive resin is coated between the inner side of the steel strip 201 and the tube body 1, and an adhesive resin is coated between the outer side of the steel strip 201 and the plastic layer 202. The copper plating layer can increase the rust resistance of the steel strip 201. The adhesive resin can make the connection between the tube body 1 and the plastic layer 202 more firmly.

Claims

1. A steel strip corrugated pipe, comprising a pipe body (1) made of plastic material, a corrugated tube (2) being arranged on the outer surface of the pipe body (1), characterized in that: The wave tube (2) is hollow and comprises an inner steel strip (201) and a plastic layer (202) coated on the outer wall of the steel strip (201); the steel strip (201) comprises a top plate (2011) provided with a plurality of wave peaks; and oppositely arranged circular arc plates (2012) are respectively connected to both ends of the top plate (2011).

2. The steel strip corrugated pipe according to claim 1, characterized in that: The cross-sectional shape of the top plate (2011) is W-shaped.

3. The steel strip corrugated pipe according to claim 1, characterized in that: The steel belt (201) is provided with a plurality of through holes.

4. The steel strip corrugated pipe according to claim 3, characterized in that: The through hole is in the shape of a circle, a plum blossom, a pentagon, an ellipse, a triangle, a square, a rectangle or a parallelepiped.

5. The steel strip corrugated pipe according to claim 1, characterized in that: Extension plates (2013) are respectively provided at the ends of the two circular arc plates (2012) in a direction extending away from the top plate (2011).

6. The steel strip corrugated pipe according to claim 5, characterized in that: A folded edge (2014) and a buckle plate (2015) are respectively fixedly provided at one end of the two extension plates (2013) away from the arc plate (2012); the folded edge (2014) can be inserted between the buckle plate (2015) and the plastic layer (202).

7. The steel strip corrugated pipe according to claim 6, characterized in that: The buckle plate (2015) is arranged to be tilted in accordance with the angle of the folded edge (2014).

8. The steel strip corrugated pipe according to claim 7, characterized in that: The cross-sectional shape of the folded edge (2014) is an inverted V-shape, and the cross-sectional shape of the buckled plate (2015) is an inverted 7-shape.

9. The steel strip corrugated pipe according to claim 8, characterized in that: The angle formed at the connection between the folded edge (2014) and the extension plate (2013) is an obtuse angle, and the angles at the corners of the two sides of the buckle plate (2015) are also obtuse angles.

10. The steel strip corrugated pipe according to claim 1, characterized in that: A copper plating layer is provided on the surface of the steel strip (201), an adhesive resin is coated between the inner side of the steel strip (201) and the tube body (1) made of plastic, and an adhesive resin is coated between the outer side of the steel strip (201) and the plastic layer (202).

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