Flat steel pipe

Abstract

The utility model discloses a flat steel pipe, which relates to the field of steel pipes, and comprises an outer steel pipe, an inner steel pipe is arranged in the outer steel pipe, a fixing ring is welded at the top of the outer steel pipe, two storage plates are connected at the bottom of the fixing ring, grooves are formed in the side walls of the storage plates, clamping plates are rotatably arranged in the grooves, and the clamping plates are connected with the outer steel pipe. A clamping ring is connected to the outer side of the bottom of the inner steel pipe, and a clamping area corresponding to the clamping ring is arranged between the clamping plate and the fixing ring. By pulling the inner steel pipe and pulling the inner steel pipe towards the outside of the outer steel pipe, the clamping rings on the inner steel pipe extrude the clamping plates on the two sides, so that the clamping plates contract towards the grooves in the storage plates, when the clamping rings are located in the clamping areas, the clamping plates reset and block the bottoms of the clamping rings, and at the moment, the clamping rings are clamped in the clamping areas. The inner steel pipe with the small diameter can conveniently penetrate through a hole needing to penetrate through.

Description

Technical Field

[0001] The utility model relates to the field of steel pipes, in particular to a flat steel pipe. Background Art

[0002] Steel pipe refers to a hollow steel product whose length is much greater than its diameter or circumference. Based on cross-sectional shape, it can be categorized into round, square, rectangular, and special-shaped steel pipes. Based on material, it can be categorized into carbon structural steel pipe, low-alloy structural steel pipe, alloy steel pipe, and composite steel pipe. Based on application, it can be categorized into pipes for transportation, engineering structures, thermal equipment, the petrochemical industry, machinery manufacturing, geological drilling, and high-pressure equipment. Based on the production process, it can be categorized into seamless steel pipe and welded steel pipe.

[0003] At present, when flat steel pipes are used, they are mostly used to pass through holes that round steel pipes cannot pass through. If the vertical diameter of the hole to be passed through is larger than the vertical diameter of the flat steel pipe, it is necessary to widen the hole or re-customize the flat steel pipe with the same vertical diameter as the hole, which is relatively inconvenient.

[0004] Therefore, it is necessary to invent a flat steel pipe to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a flat steel pipe to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flat steel pipe, comprising an outer steel pipe, an inner steel pipe arranged inside the outer steel pipe, a fixing ring welded to the top of the outer steel pipe, two receiving plates connected to the bottom of the fixing ring, a groove is provided on the side wall of the receiving plate, and a clamping plate is rotatably arranged in the groove, a clamping ring is connected to the outer side of the bottom of the inner steel pipe, and a clamping area corresponding to the clamping ring is set between the clamping plate and the fixing ring.

[0007] Preferably, a sealing groove is provided on the inner side of the fixing ring, and a sealing ring gasket is provided in the sealing groove.

[0008] Preferably, an anti-fall ring corresponding to the fixing ring is connected to the outer side of the top of the inner steel pipe.

[0009] Preferably, the surfaces of the outer steel pipe and the inner steel pipe are sprayed with anti-corrosion coating.

[0010] Technical effects and advantages of this utility model:

[0011] By pulling the inner steel tube, the inner steel tube is pulled toward the outside of the outer steel tube, and the clamping ring on the inner steel tube squeezes the clamping plates on both sides, causing the clamping plates to shrink toward the grooves in the receiving plate. When the clamping ring is in the clamping area, the clamping plate is reset and blocks the bottom of the clamping ring. At this time, the inner steel tube with a smaller diameter can be conveniently used to pass through the hole that needs to be passed through. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the expanded structure of the inner steel tube of the utility model;

[0014] Figure 3 For this utility model Figure 1 AA-direction cross-sectional structural diagram;

[0015] Figure 4 For this utility model Figure 1 A schematic diagram of the enlarged structure of part B;

[0016] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure of part C.

[0017] In the figure: 1. Outer steel pipe; 2. Inner steel pipe; 3. Fixing ring; 4. Storage plate; 5. Clamping plate; 6. Clamping ring; 7. Sealing ring; 8. Anti-drop ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] The utility model provides Figure 1-5The flat steel tube shown includes an outer steel tube 1, an inner steel tube 2 is arranged inside the outer steel tube 1, a fixing ring 3 is welded on the top of the outer steel tube 1, and two receiving plates 4 are connected to the bottom of the fixing ring 3. The side walls of the receiving plate 4 are provided with a groove, and a clamping plate 5 is rotatably arranged in the groove. The clamping plate 5 is a steel plate with a certain elasticity. A clamping ring 6 is connected to the outer side of the bottom of the inner steel tube 2, and a clamping area corresponding to the clamping ring 6 is set between the clamping plate 5 and the fixing ring 3. If a flat steel tube with a smaller diameter is needed, the inner steel tube 2 is pulled toward the outside of the outer steel tube 1 by pulling the inner steel tube 2. The clamping ring 6 on the inner steel tube 2 squeezes the clamping plates 5 on both sides, so that the clamping plates 5 shrink toward the groove in the receiving plate 4. When the clamping ring 6 is in the clamping area, the clamping plate 5 is reset and blocks the bottom of the clamping ring 6. At this time, the inner steel tube 2 with a smaller diameter can be conveniently used to pass through the hole that needs to be passed through.

[0020] A sealing groove is provided on the inner side of the fixing ring 3 , and a sealing ring gasket 7 is provided in the sealing groove, which can conveniently increase the sealing between the outer steel pipe 1 and the inner steel pipe 2 .

[0021] The outer side of the top of the inner steel pipe 2 is connected with an anti-fall ring 8 corresponding to the fixing ring 3, which can effectively prevent the inner steel pipe 2 from sliding into the inner part of the outer steel pipe 1.

[0022] The surfaces of the outer steel pipe 1 and the inner steel pipe 2 are sprayed with anti-corrosion paint, which can conveniently improve the anti-corrosion performance of the outer steel pipe 1 and the inner steel pipe 2.

[0023] Working principle of this utility model:

[0024] If a flat steel tube with a smaller diameter is needed, the inner steel tube 2 is pulled toward the outside of the outer steel tube 1 by pulling the inner steel tube 2. The clamping ring 6 on the inner steel tube 2 squeezes the clamping plates 5 on both sides, causing the clamping plates 5 to shrink toward the groove in the receiving plate 4. When the clamping ring 6 is in the clamping area, the clamping plate 5 is reset and blocks the bottom of the clamping ring 6. At this time, the inner steel tube 2 with a smaller diameter can be conveniently used to pass through the hole that needs to be passed through.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flat steel tube, including an outer steel tube, characterized in that: An inner steel pipe is arranged inside the outer steel pipe, a fixing ring is welded on the top of the outer steel pipe, and two receiving plates are connected to the bottom of the fixing ring. The side walls of the receiving plates are provided with grooves, and a clamping plate is rotatably arranged in the grooves. A clamping ring is connected to the outer side of the bottom of the inner steel pipe, and a clamping area corresponding to the clamping ring is set between the clamping plate and the fixing ring.

2. The flat steel tube according to claim 1, characterized in that: A sealing groove is provided on the inner side of the fixing ring, and a sealing ring gasket is provided in the sealing groove.

3. The flat steel tube according to claim 1, characterized in that: The outer side of the top of the inner steel pipe is connected with an anti-fall ring corresponding to the fixing ring.

4. The flat steel tube according to claim 1, characterized in that: The surfaces of the outer steel pipe and the inner steel pipe are sprayed with anti-corrosion coating.

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