Composite steel pipe with anti-impact layer

Abstract

The utility model discloses a composite steel pipe with an anti-impact layer, which comprises an outer pipe, an inner pipe is arranged in the outer pipe, an arc-shaped protective plate I and an arc-shaped protective plate II which are oppositely arranged are arranged on the outer wall of the outer pipe, and the arc-shaped protective plate I and the arc-shaped protective plate II are connected through a connecting assembly. A plurality of evenly-distributed positioning blocks are arranged on the outer wall of the outer pipe, positioning grooves matched with the positioning blocks are formed in the inner wall of the first arc-shaped protection plate and the inner wall of the second arc-shaped protection plate, and buffering rubber pads are arranged on the outer wall of the first arc-shaped protection plate and the outer wall of the second arc-shaped protection plate. The device has the beneficial effects that the first arc-shaped protection plate, the second arc-shaped protection plate and the connecting assembly are arranged so that the buffer rubber pad can be conveniently disassembled and assembled, the disassembly and assembly time of the buffer rubber pad is saved, the disassembly and assembly efficiency of the buffer rubber pad is improved, and meanwhile the connecting assembly is simple to use and convenient to operate through cooperation of springs and limiting pins.

Description

Technical Field

[0001] The utility model relates to the technical field of composite steel pipes, and more specifically, to a composite steel pipe with an impact-resistant layer. Background Art

[0002] Composite steel pipe is a newly developed type of pipeline material. This pipeline has successfully solved the losses caused by pipeline corrosion every year and is completely a green and energy-saving pipeline. This composite pipe is composed of steel and plastic, so it has the common advantages of steel and plastic. Its compressive, tensile, corrosion-resistant, and ultraviolet-resistant abilities are beyond those of other pipelines. Therefore, this pipeline can be used in various engineering fields, and the composite steel pipe can exhibit different performance advantages according to different environments. The steel-plastic composite steel pipe uses seamless steel pipe or welded steel pipe as the base pipe, and the inner wall is coated with polyethylene powder coating or epoxy resin coating with high adhesion, corrosion resistance, and food-grade hygiene.

[0003] According to a composite steel pipe with an impact-resistant layer disclosed in Chinese Patent CN202321772876.9, this application can protect the inner layer of this composite steel pipe through an outer protective pipe, and can protect the outer side of this composite steel pipe by using a rubber ring. The notch of the support rubber strip can make the support rubber strip deform more easily, improve the elasticity of the support rubber strip, thereby enhancing the anti-collision protection ability of the rubber ring, making this composite steel pipe not easily damaged when colliding. When the existing composite steel pipe is sleeved with a rubber ring, it is more troublesome and time-consuming to expand the rubber ring by external force, and it is not convenient for subsequent disassembly.

[0004] In view of the problems in the related art, no effective solution has been proposed yet. Summary of the Utility Model

[0005] In view of the problems in the related art, the utility model provides a composite steel pipe with an impact-resistant layer to overcome the above-mentioned technical problems existing in the related art.

[0006] Therefore, the specific technical solution adopted by the utility model is as follows:

[0007] A composite steel pipe with an impact-resistant layer includes an outer pipe. An inner pipe is arranged in the outer pipe. Oppositely arranged arc-shaped protection plates I and II are arranged on the outer wall of the outer pipe. The arc-shaped protection plates I and II are connected by a connecting component. A plurality of uniformly distributed positioning blocks are arranged on the outer wall of the outer pipe. Positioning grooves matching the positioning blocks are respectively arranged on the inner walls of the arc-shaped protection plates I and II. Buffer rubber pads are arranged on the outer walls of the arc-shaped protection plates I and II.

[0008] Preferably, connecting plates are provided at both ends of the outer tube, and a plurality of uniformly distributed mounting holes are formed on one side of the connecting plates.

[0009] Preferably, a corrosion-resistant layer is provided on the inner wall of the inner tube.

[0010] Preferably, a plurality of uniformly distributed anti-slip lines are formed on the outer wall of the buffer rubber pad.

[0011] Preferably, the connecting assembly includes symmetrically arranged connecting columns I provided on the outer wall of the first arc-shaped protection plate. A fixing groove is formed on one side of the connecting column I. Symmetrically arranged connecting columns II are provided on both sides of the second arc-shaped protection plate. A fixing block matching the fixing groove is provided at the bottom end of the connecting column II. Symmetrically arranged adjusting grooves are formed at the bottom end of the connecting column I and between the two fixing grooves. A limiting pin is arranged in the adjusting groove. A travel groove is formed on one side of the limiting pin. A slider matching the travel groove is arranged in the travel groove. A sliding rod extending outside the travel groove and connected to the connecting column I is provided on one side of the slider. A return spring is sleeved on the outer wall of the limiting pin and on one side of the sliding rod. One side of the limiting pin away from the sliding rod extends into the fixing groove. A limiting groove matching the limiting pin is formed on one side of the fixing block.

[0012] Preferably, a pull rod extending outside the adjusting groove is fixedly provided on the outer wall of the limiting pin.

[0013] The beneficial effects of the present utility model are as follows: By providing the first arc-shaped protection plate, the second arc-shaped protection plate and the connecting assembly, it is convenient to disassemble and assemble the buffer rubber pad, saving the disassembly and assembly time of the buffer rubber pad and improving the disassembly and assembly efficiency of the buffer rubber pad. At the same time, the connecting assembly is simple and convenient to operate by the cooperation of the spring and the limiting pin. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is the overall structural schematic diagram of a composite steel pipe with an impact-resistant layer according to an embodiment of the present utility model;

[0016] Figure 2 is the upper view of a composite steel pipe with an impact-resistant layer according to an embodiment of the present utility model;

[0017] Figure 3Schematic structural diagram of the outer pipe of a composite steel pipe with an impact-resistant layer according to an embodiment of the present invention;

[0018] Figure 4 Schematic structural diagram of the first arc-shaped protection plate and the second arc-shaped protection plate in a composite steel pipe with an impact-resistant layer according to an embodiment of the present invention;

[0019] Figure 5 Cross-sectional view of the first connecting column and the second connecting column in a composite steel pipe with an impact-resistant layer according to an embodiment of the present invention;

[0020] Figure 6 is Figure 5 Partial enlarged schematic view at A in

[0021] In the figure:

[0022] 1. Outer pipe; 2. Inner pipe; 3. First arc-shaped protection plate; 4. Second arc-shaped protection plate; 5. Positioning block; 6. Positioning groove; 7. Connecting plate; 8. Anti-slip pattern; 9. First connecting column; 10. Fixed groove; 11. Second connecting column; 12. Fixed block; 13. Adjusting groove; 14. Limit pin; 15. Stroke groove; 16. Slide block; 17. Slide rod; 18. Return spring; 19. Limit groove; 20. Pull rod; 21. Buffer rubber pad. Specific embodiments

[0023] To further illustrate each embodiment, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] According to an embodiment of the present invention, a composite steel pipe with an impact-resistant layer is provided.

[0025] Embodiment 1;

[0026] As Figures 1-6 shown, the composite steel pipe with an impact-resistant layer according to an embodiment of the present invention includes an outer pipe 1. An inner pipe 2 is provided in the outer pipe 1. Oppositely arranged first arc-shaped protection plate 3 and second arc-shaped protection plate 4 are provided on the outer wall of the outer pipe 1. The first arc-shaped protection plate 3 and the second arc-shaped protection plate 4 are connected by a connecting component. A plurality of uniformly distributed positioning blocks 5 are provided on the outer wall of the outer pipe 1. Positioning grooves 6 matching the positioning blocks 5 are formed on the inner walls of the first arc-shaped protection plate 3 and the second arc-shaped protection plate 4. Buffer rubber pads 21 are provided on the outer walls of the first arc-shaped protection plate 3 and the second arc-shaped protection plate 4.

[0027] Example 2;

[0028] As Figures 1-6 shown, it includes an outer tube 1, an inner tube 2 is arranged in the outer tube 1, arc-shaped protective plates 3 and 4 are arranged oppositely on the outer wall of the outer tube 1, the arc-shaped protective plate 3 and the arc-shaped protective plate 4 are connected by a connecting component, a plurality of uniformly distributed positioning blocks 5 are arranged on the outer wall of the outer tube 1, positioning grooves 6 matching the positioning blocks 5 are formed in the inner walls of the arc-shaped protective plate 3 and the arc-shaped protective plate 4, and buffer rubber pads 21 are arranged on the outer walls of the arc-shaped protective plate 3 and the arc-shaped protective plate 4. Both ends of the outer tube 1 are provided with symmetrically arranged connecting plates 7, and a plurality of uniformly distributed mounting holes are formed in one side of the connecting plates 7. A corrosion-resistant layer is arranged on the inner wall of the inner tube 2. Anti-slip lines 8 are formed in the outer wall of the buffer rubber pad 21. By adding a corrosion-resistant layer to the inner wall of the inner tube 2, the corrosion resistance of the inner wall of the inner tube 2 is improved, and thus its service life is extended.

[0029] Example 3;

[0030] As Figures 1-6As shown in the figure, it includes an outer tube 1, an inner tube 2 is arranged in the outer tube 1, arc-shaped protection plates 3 and 4 are symmetrically arranged on the outer wall of the outer tube 1, the arc-shaped protection plates 3 and 4 are connected by a connecting component, a plurality of uniformly distributed positioning blocks 5 are arranged on the outer wall of the outer tube 1, positioning grooves 6 matching the positioning blocks 5 are formed in the inner walls of the arc-shaped protection plates 3 and 4, and buffer rubber pads 21 are arranged on the outer walls of the arc-shaped protection plates 3 and 4. The connecting component includes symmetrically arranged connecting columns 9 arranged on the outer wall of the arc-shaped protection plate 3, a fixing groove 10 is formed on one side of the connecting column 9, symmetrically arranged connecting columns 11 are arranged on both sides of the arc-shaped protection plate 4, a fixing block 12 matching the fixing groove 10 is arranged at the bottom end of the connecting column 11, symmetrically arranged adjusting grooves 13 are formed at the bottom end of the connecting column 9 and between the two fixing grooves 10, a limiting pin 14 is arranged in the adjusting groove 13, a travel groove 15 is formed on one side of the limiting pin 14, a slider 16 matching the travel groove 15 is arranged in the travel groove 15, a sliding rod 17 extending outside the travel groove 15 and connected to the connecting column 9 is arranged on one side of the slider 16, a return spring 18 is sleeved on the outer wall of the sliding rod 17 on one side of the limiting pin 14, one side of the limiting pin 14 away from the sliding rod 17 extends into the fixing groove 10, and a limiting groove 19 matching the limiting pin 14 is formed on one side of the fixing block 12. A pull rod 20 extending outside the adjusting groove 13 is fixedly arranged on the outer wall of the limiting pin 14. When installing the buffer rubber pad 21 on the outer tube 1, first push the pull rod 20 on the arc-shaped protection plate 3 to drive the limiting pin 14 to slide to one side and disengage from the fixing groove 10. At this time, the return spring 18 is in a compressed state. Then, cover the arc-shaped protection plates 3 and 4 with the buffer rubber pads 21 on the outer wall of the outer tube 1, so that the positioning blocks 5 on the outer tube 1 are respectively inserted into the positioning grooves 6 on the inner walls of the arc-shaped protection plates 3 and 4. At the same time, the arc-shaped protection plates 3 and 4 respectively drive the connecting columns 9 and 11 to align, and the fixing block 12 on the connecting column 11 is inserted into the fixing groove 10 on the connecting column 9. Then release the pull rod 20, and the return spring 18 resets to drive the limiting pin 14 to enter the fixing groove 10 and insert into the limiting groove 19 on the fixing block 12 for limiting. By arranging the arc-shaped protection plate 1, the arc-shaped protection plate 2 and the connecting component, it is convenient to disassemble and assemble the buffer rubber pad, saving the disassembly and assembly time of the buffer rubber pad and improving the disassembly and assembly efficiency of the buffer rubber pad. At the same time, the connecting component is simple to use in cooperation with the spring and the limiting pin, and the operation is convenient.

[0031] In actual application, by adding a corrosion-resistant layer to the inner wall of the inner tube 2, the corrosion resistance of the inner wall of the inner tube 2 is improved, thereby improving its service life; when installing the buffer rubber pad 21 on the outer tube 1, first push the pull rod 20 on the arc protection plate 1 3 to drive the limit pin 14 to slide to one side to disengage from the fixed groove 10. At this time, the reset spring 18 is in a compressed state, and then the arc protection plate 1 3 and the arc protection plate 2 4 with the buffer rubber pad 21 are respectively covered on the outer wall of the outer tube 1, so that the positioning blocks 5 on the outer tube 1 are respectively inserted into the positioning grooves 6 on the inner walls of the arc protection plate 1 3 and the arc protection plate 2 4, and at the same time, the arc protection plates One 3 and arc-shaped protective plate two 4 respectively drive the connecting column one 9 and the connecting column two 11 to align, the fixing block 12 on the connecting column two 11 is inserted into the fixing groove 10 on the connecting column one 9, and then the pull rod 20 is loosened, and the reset spring 18 resets and drives the limit pin 14 to enter the fixing groove 10 and insert it into the limit groove 19 on the fixing block 12 for limiting. By setting the arc-shaped protective plate one, the arc-shaped protective plate two and the connecting component, it is convenient to disassemble and assemble the buffer rubber pad, saving the disassembly and assembly time of the buffer rubber pad and improving the disassembly and assembly efficiency of the buffer rubber pad. At the same time, the connecting component is simple to use and easy to operate through the cooperation of the spring and the limit pin.

[0032] To sum up, with the help of the above-mentioned technical scheme of the utility model, the buffer rubber pad is conveniently disassembled and assembled by arranging arc-shaped protective plate 1, arc-shaped protective plate 2 and connecting components, which saves the time of disassembly and assembly of the buffer rubber pad and improves the efficiency of disassembly and assembly of the buffer rubber pad. At the same time, the connecting component is simple to use and easy to operate through the cooperation of the spring and the limit pin.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite steel pipe with an impact-resistant layer, characterized in that: The invention comprises an outer tube (1), wherein an inner tube (2) is arranged in the outer tube (1), an outer wall of the outer tube (1) is provided with a pair of arc-shaped protective plates (1) and (2), the arc-shaped protective plates (1) and (2) are connected via a connecting assembly, a plurality of evenly distributed positioning blocks (5) are arranged on the outer wall of the outer tube (1), positioning grooves (6) matching the positioning blocks (5) are provided on the inner walls of the arc-shaped protective plates (1) and (2) are provided on the outer walls of the arc-shaped protective plates (3) and (2) are provided with buffer rubber pads (21).

2. The composite steel pipe with an impact-resistant layer according to claim 1, characterized in that: Both ends of the outer tube (1) are provided with symmetrically arranged connecting plates (7), and one side of the connecting plate (7) is provided with a plurality of evenly distributed mounting holes.

3. The composite steel pipe with an impact-resistant layer according to claim 1, characterized in that: The inner wall of the inner tube (2) is provided with a corrosion-resistant layer.

4. The composite steel pipe with an impact-resistant layer according to claim 1, characterized in that: The outer wall of the buffer rubber pad (21) is provided with a plurality of evenly distributed anti-slip grooves (8).

5. The composite steel pipe with an impact-resistant layer according to claim 1, characterized in that: The connecting assembly comprises a symmetrically arranged connecting column (9) provided on the outer wall of the arc-shaped protective plate (3), a fixing groove (10) being provided on one side of the connecting column (9), a symmetrically arranged connecting column (11) being provided on both sides of the arc-shaped protective plate (4), a fixing block (12) matching the fixing groove (10) being provided at the bottom end of the connecting column (11), a symmetrically arranged adjusting groove (13) being provided at the bottom end of the connecting column (9) and located between the two groups of the fixing grooves (10), a limiting pin (14) being provided in the adjusting groove (13), and the limiting pin (14) being provided in the adjusting groove. 4) A travel groove (15) is provided on one side, a sliding block (16) matching the travel groove (15) is provided in the travel groove (15), a sliding rod (17) extending outside the travel groove (15) and connected to the connecting column (9) is provided on one side of the sliding block (16), a return spring (18) is provided on one side of the limit pin (14) and located on the outer wall of the sliding rod (17), the side of the limit pin (14) away from the sliding rod (17) extends into the fixing groove (10), and a limit groove (19) matching the limit pin (14) is provided on one side of the fixing block (12).

6. The composite steel pipe with an impact-resistant layer according to claim 5, characterized in that: A pull rod (20) extending outside the adjustment slot (13) is fixedly provided on the outer wall of the limit pin (14).

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