A middle drum type tubular steel plate connecting piece and a combined structure thereof

Abstract

The patent relates to a tubular steel plate connector, in particular to a middle drum type tubular steel plate connector and a combined structure thereof. The tubular steel plate connector comprises a cylindrical body (1), the cylindrical body (1) comprises an upper column body section (12), a middle column body section (11) and a lower column body section (13), the cross-sectional area of the middle column body section (11) is greater than that of the upper column body section (12), and the cross-sectional area of the middle column body section (11) is greater than that of the lower column body section (13). The patent adopts a middle drum type structure, so that the middle part of the cylindrical body is outwardly drum-shaped, and the cylindrical body is not easy to be folded inward when being pressed, and the structure is more stable and reliable when being connected with a top plate and a bottom plate.

Description

Technical Field

[0001] This patent relates to tubular steel plate connectors, and more particularly to a drum-type tubular steel plate connector and its combined structure. Background Technology

[0002] Traditional tubular steel plate connectors consist of straight tubes in the middle. These straight tubes are prone to inward bending under pressure, leading to poor overall structural stability. Furthermore, when using rotary friction welding on straight tubes, the uniform diameter of each section makes them susceptible to slippage, hindering installation. Summary of the Invention

[0003] This patent addresses the shortcomings of existing straight tubular connectors, which are prone to inward bending under pressure and sliding up and down during subsequent installation. It provides a drum-shaped tubular steel plate connector and its combined structure.

[0004] To solve the above-mentioned technical problems, this patent provides the following technical solution:

[0005] A drum-shaped tubular steel plate connector includes a cylindrical body, comprising an upper section, a middle section, and a lower section. The cross-sectional area of ​​the middle section is larger than that of the upper section, and the cross-sectional area of ​​the middle section is larger than that of the lower section. Because the cross-sectional area of ​​the middle section is larger than that of the upper and lower ends, when the cylindrical body is used as a connector between two steel plates, its stability is better due to the larger middle section and smaller ends. Furthermore, the larger cross-sectional area in the middle section provides superior bending and buckling resistance.

[0006] Preferably, the diameter of the middle part of the cylindrical body is larger than the diameter of both ends. In the longitudinal section of the cylindrical body, the outer wall of the cylindrical body is a curve that convexes outward from the middle from top to bottom.

[0007] Preferably, the upper or lower end of the cylindrical body is provided with a friction section, and the wall thickness of the friction section gradually decreases from the connection with the cylindrical body to the outer edge of the friction section.

[0008] Preferably, the friction section and the cylindrical body are made of the same material. The outer edge of the cylindrical body is forged to form the friction section. The top wall thickness of the friction section is small, making it easier to fit into the top or bottom plate during rotary friction welding.

[0009] Preferably, the cylindrical body is a hollow tube. The middle part of the hollow tube is expanded by a tube expander to form the structural features of a central drum.

[0010] Preferably, a clamping device is provided at one end of the cylindrical body. The clamping device includes a connecting frustum connected to the cylindrical body and a clamping part. The connecting frustum has at least two cross-sections of unequal diameters and serves to support the top plate and transmit the pressure during friction welding.

[0011] Preferably, the connecting frustum is a conical frustum, and the diameter of the end where the connecting frustum connects to the cylindrical body is larger than the diameter of the end where the connecting frustum connects to the clamping device. The cross-sectional area of ​​the connecting frustum gradually increases from the clamping part to the cylindrical body. Therefore, when the top plate is pressed down, the inner wall of the opening on the top plate can fully rub against the connecting frustum to form a molten friction weld.

[0012] Preferably, an annular platform is also provided between the frustum and the cylindrical body. The annular platform mainly serves as a load-bearing platform, absorbing the pressure when the top plate presses down.

[0013] Preferably, the clamping part is a concave cap clamping head or an outward cap clamping head. The clamping part is used for clamping by an external rotating mechanism. When the external clamping mechanism clamps the cylindrical body through the clamping part and drives the cylindrical body to rotate at high speed, the upper end of the cylindrical body is friction-welded to the top plate, and the lower end of the cylindrical body is friction-welded to the bottom plate.

[0014] A combined structure of a central drum-type tubular steel plate connector includes the aforementioned central drum-type tubular steel plate connector, one end of which is welded to the steel plate by friction welding.

[0015] Preferably, the cylindrical body is a hollow tube, and the drum-shaped tubular steel plate connector is set between the bottom plate and the top plate. The drum-shaped tubular steel plate connector is connected to the bottom plate and the top plate by synchronous friction welding.

[0016] Preferably, a clamping device is provided at one end of the cylindrical body, and an opening is provided on the top plate. The upper part of the middle drum-shaped tubular steel plate connector passes through the opening and is friction-welded to the top plate, while the friction section at the lower end of the middle drum-shaped tubular steel plate connector is friction-welded to the bottom plate. The cylindrical body is a solid tube or sealed at one end, and a clamping device is provided at the sealed end of the cylindrical body. An external rotating clamping mechanism clamps the clamping device to rotate the cylindrical body and friction-weld it to the bottom plate and the top plate.

[0017] This patent uses a central drum-shaped structure, which makes the central part of the cylindrical body bulge outward. When the cylindrical body is under pressure, it is less likely to fold inward. When connected to the top and bottom plates, the structure is more stable and reliable. At the same time, the central bulge also facilitates the clamping of the central part of the rotating device, improving the installation efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this patent.

[0019] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this patent.

[0020] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of this patent.

[0021] Figure 4 This is a schematic diagram showing the connection between the cylindrical body and the top and bottom plates in Embodiment 1 of this patent.

[0022] Figure 5 This is a schematic diagram showing the connection between the cylindrical body and the top and bottom plates in Embodiment 2 of this patent.

[0023] Wherein 1—cylindrical body, 2—clamping device, 3—bottom plate, 4—top plate, 11—middle section of cylindrical body, 12—upper section of cylindrical body, 13—lower section of cylindrical body, 14—outer wall, 15—friction section, 21—connecting truncated cone, 22—clamping part, 23—annular platform, 24—outer protruding cap, 41—opening. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The present patent will be further described in detail with reference to specific embodiments: Example 1

[0025] A type of drum-shaped tubular steel plate connector, such as Figure 1 , 4 As shown, the cylindrical body 1 includes an upper section 12, a middle section 11, and a lower section 13. The cross-sectional area of ​​the middle section 11 is larger than that of the upper section 12, and the cross-sectional area of ​​the middle section 11 is larger than that of the lower section 13. Since the cross-sectional area of ​​the middle section 11 is larger than that of the upper and lower ends, when the cylindrical body 1 is used as a connector between two steel plates, its stability is better due to its larger central section and smaller ends. Furthermore, the larger central cross-section provides superior bending and buckling resistance.

[0026] The diameter of the middle part of the cylindrical body 1 is larger than the diameter of both ends. In the longitudinal section of the cylindrical body 1, the outer wall 14 of the cylindrical body 1 is a curve that convexes outward in the middle from top to bottom. A friction section 15 is provided at the end of the upper section 12 or the lower section 13 of the cylindrical body. The wall thickness of the friction section 15 gradually decreases from the connection point with the cylindrical body 1 to the outer edge of the friction section 15.

[0027] The friction section 15 and the cylindrical body 1 are made of the same material. The outer edge of the cylindrical body 1 is forged to form the friction section 15. The top wall thickness of the friction section is relatively small, making it easier to fit into the top or bottom plate during rotary friction welding. The cylindrical body 1 is a hollow tube.

[0028] A combined structure of a central drum-type tubular steel plate connector includes the aforementioned central drum-type tubular steel plate connector, one end of which is welded to the steel plate 3 by friction welding.

[0029] The cylindrical body 1 is a hollow tube, and the drum-shaped tubular steel plate connector is set between the bottom plate 3 and the top plate 4. The drum-shaped tubular steel plate connector is connected to the bottom plate 3 and the top plate 4 by synchronous friction welding.

[0030] Example 2

[0031] like Figure 2 , 5 As shown, the difference between this embodiment and Embodiment 1 is that a clamping device 2 is provided at one end of the cylindrical body 1. The clamping device 2 includes a connecting frustum 21 connected to the cylindrical body 1 and a clamping part 22. The connecting frustum 21 has at least two cross-sections with different diameters, and the connecting frustum serves to support the top plate and transmit the pressure during friction welding.

[0032] The connecting frustum 21 is a conical frustum. The diameter of the end of the connecting frustum 21 that connects to the cylindrical body 1 is larger than the diameter of the end of the connecting frustum 21 that connects to the clamping device 2. The cross-sectional area of ​​the connecting frustum 21 gradually increases from the clamping part 22 to the cylindrical body 1. Therefore, when the top plate is pressed down, the inner wall of the opening 41 on the top plate 4 can fully rub against the connecting frustum 21 to form a molten friction weld.

[0033] An annular platform 23 is also provided between the frustum 21 and the cylindrical body 1. The annular platform 23 mainly serves as a load-bearing platform to withstand the pressure when the top plate 4 is pressed down.

[0034] The clamping part 22 is a concave cap clamping head. The clamping part 22 is used for clamping by an external rotating mechanism. When the external clamping mechanism clamps the cylindrical body 1 through the clamping part and drives the cylindrical body 1 to rotate at high speed, the upper end of the cylindrical body 1 is friction-welded to the top plate, and the lower end of the cylindrical body 1 is friction-welded to the bottom plate.

[0035] A combined structure of a central drum-type tubular steel plate connector includes the aforementioned central drum-type tubular steel plate connector, one end of which is welded to the steel plate 3 by friction welding.

[0036] A clamping device 2 is provided at one end of the cylindrical body 1, and an opening 41 is provided on the top plate 4. The upper part of the middle drum-shaped tubular steel plate connector passes through the opening 41 and is friction-welded to the top plate 4. The friction section 15 at the lower end of the middle drum-shaped tubular steel plate connector is friction-welded to the bottom plate 3. The cylindrical body 1 is a solid tube or closed at one end. A clamping device 2 is provided at the closed end of the cylindrical body 1. An external rotating clamping mechanism clamps the clamping device 2 to rotate the cylindrical body 1 and friction-weld it to the bottom plate 3 and the top plate 4.

[0037] Example 3

[0038] like Figure 3 As shown, the difference between this embodiment and embodiment 2 is that the clamping part 22 is a convex cap 24 clamping head, and the convex cap 24 can also be used for external hanging parts.

[0039] In summary, the above description is only a preferred embodiment of this patent. All equivalent changes and modifications made within the scope of this patent application shall be covered by this patent.

Claims

1. A drum-shaped tubular steel plate connector, comprising a cylindrical body (1), characterized in that: The cylindrical body (1) includes an upper section (12), a middle section (11), and a lower section (13). The cross-sectional area of ​​the middle section (11) is larger than that of the upper section (12). The cross-sectional area of ​​the middle section (11) is larger than that of the lower section (13). The upper section (12) or the lower section (13) is provided with a friction section (15). The wall thickness of the friction section (15) gradually decreases from the connection with the cylindrical body (1) to the outer edge of the friction section (15).

2. The drum-type tubular steel plate connector according to claim 1, characterized in that: The diameter of the middle part of the cylindrical body (1) is larger than the diameter of the two ends.

3. The drum-type tubular steel plate connector according to claim 1, characterized in that: The friction section (15) and the cylindrical body (1) are made of the same material.

4. A drum-type tubular steel plate connector according to claim 1, characterized in that: The cylindrical body (1) is a hollow tube.

5. A drum-type tubular steel plate connector according to claim 1, characterized in that: A clamping device (2) is provided at one end of the cylindrical body (1). The clamping device (2) includes a connecting frustum (21) connected to the cylindrical body (1) and a clamping part (22).

6. A drum-type tubular steel plate connector according to claim 5, characterized in that: The connecting frustum (21) is a cone-shaped frustum. The diameter of the end where the connecting frustum (21) connects to the cylindrical body (1) is greater than the diameter of the end where the connecting frustum (21) connects to the clamping device (2).

7. A drum-type tubular steel plate connector according to claim 5, characterized in that: A ring platform (23) is also provided between the frustum (21) and the cylindrical body (1).

8. A drum-type tubular steel plate connector according to claim 1, characterized in that: The clamping part (22) is a concave cap clamping head or an outward convex cap (24) clamping head.

9. A combined structure of a centrally-drum type tubular steel plate connector, comprising the centrally-drum type tubular steel plate connector as described in any one of claims 1-8, characterized in that: One end of the central drum-shaped tubular steel plate connector is welded to the base plate (3) by friction welding.

10. The combined structure of a drum-type tubular steel plate connector according to claim 9, characterized in that: The cylindrical body (1) is a hollow tube, and the middle drum-shaped tubular steel plate connector is set between the bottom plate (3) and the top plate (4). The middle drum-shaped tubular steel plate connector is connected to the bottom plate (3) and the top plate (4) by synchronous friction welding.

11. The combined structure of a drum-type tubular steel plate connector according to claim 9, characterized in that: A clamping device (2) is provided at one end of the cylindrical body (1), and an opening (41) is provided on the top plate (4). The upper part of the middle drum-shaped tubular steel plate connector passes through the opening (41) and is frictionally welded to the top plate (4). The friction section (15) at the lower end of the middle drum-shaped tubular steel plate connector is frictionally welded to the bottom plate (3).

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