Bent pipe anti-deflation spring clamp

Abstract

The invention relates to the technical field of bent pipes, in particular to a bent pipe anti-shrinking spring clamp which aims at solving the problems that an existing bent pipe anti-shrinking technology is inconvenient to use flexibly, insufficient in supporting force and the like and comprises a spring section, a radial bending section, a fixing part and a fixing hole. Radial bending sections are arranged at the two ends of the spring section, the positions of the two radial bending sections are close to each other, fixing parts and center fixing holes of the fixing parts are arranged on the radial bending sections, the radial bending sections are formed by bending the head end and the tail end of the spring section, and the radial bending sections are located outside the spring section and parallel to the axial direction of the spring section. When the pipe bending device is used for bending a pipe, the outer wall of the circular pipe is supported as a circular outline, and the problem that the pipe wall is deformed and cannot be used due to pipe wall sinking caused by stress concentration generated at the bending position is solved.

Description

Technical Field

[0001] The invention relates to the technical field of bent pipes, and in particular to a bent pipe anti-collapse spring clamp. Background Art

[0002] Metal pipe bending is a common processing operation, which is frequently used in various fields such as hydropower generation. During the bending process of metal pipes, stress concentration often occurs due to uneven force at the bend of the pipe wall, resulting in pipe collapse and deformation. In order to prevent the pipe from collapse and deformation, the existing pipe bending anti-collapse and anti-deformation devices generally use an inner pipe support ball head or an inner pipe support spring. The inner pipe support ball head is used in a desktop pipe bending machine. The metal pipe is placed in the pipe bending machine, and the metal pipe is inserted into the support rod of the support ball head so that the support ball head is against the bend of the pipe. The bending mold on the desktop pipe bending machine bends the metal pipe. During the pipe bending process, the supporting ball head evenly supports the inner wall of the metal pipe to prevent the pipe from being deflated. During the use of the supporting spring inside the pipe, the spring is placed in the metal pipe and covers the entire bending part of the metal pipe. The metal pipe is placed in the pipe bending machine and the bending mold on the pipe bending machine bends the metal pipe. During the pipe bending process, the spring evenly supports the inner wall of the metal pipe to prevent the pipe from being deflated. A small pipe bending machine can be used for pipe bending by using the supporting spring, which is more flexible than a desktop pipe bending machine. Both of the above methods can make the metal pipe evenly stressed during the pipe bending process to prevent the pipe from being deflated.

[0003] However, the support ball head inside the pipe requires a stable fixed support and can only be used in a desktop pipe bending machine, which is not convenient for flexible use at the construction site; the support spring inside the pipe needs to bend with the bent pipe, so a spring with too large rigidity cannot be used, so the supporting force is insufficient and cannot effectively prevent the pipe from deflation. Summary of the invention

[0004] In order to solve the problems of the existing anti-bending tube deflation technology, such as inconvenient use and insufficient supporting force, the present invention further provides a spring clamp for anti-bending tube deflation to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is:

[0006] It includes a spring section, a radial bending section, a fixing portion and a fixing hole;

[0007] Both ends of the spring section are provided with radial bending sections, the two radial bending sections are close to each other, and the radial bending sections are provided with a fixing part and a central fixing hole of the fixing part.

[0008] Furthermore, the radial bending section is formed by bending the head and tail ends of the spring section.

[0009] Furthermore, the fixing portion is configured to be flat so that the two bent sections can be close to each other.

[0010] Furthermore, the fixing holes on the two fixing parts are concentrically arranged.

[0011] Furthermore, the radial bending section is located outside the spring section, and the radial bending section is parallel to the axial direction of the spring section.

[0012] Furthermore, the spring segment is made of carbon steel.

[0013] Furthermore, it also includes a fixing device, which passes through the fixing hole to fix the two radial bending sections, and the fixing device is used to prevent the clamp from expanding outwards.

[0014] Furthermore, the fixing device is a bolt.

[0015] Furthermore, the fixing device is an expansion clamp.

[0016] Furthermore, the expansion clamp comprises a V-shaped arm, both top ends of the V-shaped arm are provided with an upper support portion, and the middle section of the V-shaped arm is provided with a lower support portion.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] A spring clamp for preventing pipe bending from deflation is provided with a spring section sleeved on the outside of a round pipe. The spring section clamps the bending part of the round pipe tightly, supports the circular contour of the outer wall of the round pipe, and prevents stress concentration at the bending part, causing the pipe wall to sink inward, causing the pipe wall to deform and become unusable. Compared with the existing pipe bending and anti-deflation and anti-deformation devices using in-pipe support ball heads and in-pipe support springs, it is easy to carry; when bending a pipe, multiple clamps can be inserted at intervals at the bending point, which can not only increase the restraining force on the deformation of the pipe wall, but also prevent spring accumulation when bending the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of the spring clamp is shown in Figure 1. Figure I ;

[0020] Figure 2 The overall structure of the spring clamp is shown in Figure 1. Figure II ;

[0021] Figure 3 Illustration of the expansion clamp fixing spring clamp Figure I ;

[0022] Figure 4 Illustration of the expansion clamp fixing spring clamp Figure II ;

[0023] Figure 5 It is a schematic diagram of bolt fixing on spring clamp;

[0024] Figure 6 For the present invention Figure 1 A magnified schematic diagram of the A structure.

[0025] In the figure: 1, spring section; 2, radial bending section; 3, fixing portion; 4, fixing hole; 51, bolt; 52, expansion clamp; 521, V-shaped arm; 522, upper support portion; 523, lower support portion. DETAILED DESCRIPTION

[0026] Specific implementation method 1: See Figure 1-2 As shown, a spring clamp for preventing bent pipe from collapsing, this embodiment comprises a spring segment 1, a radial bending segment 2, a fixing portion 3 and a fixing hole 4;

[0027] Both ends of the spring segment 1 are provided with radial bending segments 2 , the two radial bending segments 2 are located close to each other, a fixing portion 3 is provided on the radial bending segment 2 , and a fixing hole 4 is opened at the center of the fixing portion 3 .

[0028] Specific implementation method 2: See Figure 1-2 As shown, the radial bending section 2 of this embodiment is formed by bending the head and tail ends of the spring section 1.

[0029] Specific implementation method three: see Figure 1-2 As shown, the fixing portion 3 of this embodiment is configured to be flat, so that the two bent sections 2 can be close to each other.

[0030] Specific implementation method four: see Figure 1-2 As shown, the fixing holes 4 on the two fixing parts 3 of this embodiment are concentrically arranged.

[0031] Specific implementation method five: see Figure 1-2 As shown, the radial bending section 2 of this embodiment is located outside the spring section 1 , and the radial bending section 2 is parallel to the axial direction of the spring section 1 .

[0032] Specific implementation method six: see Figure 1-2 As shown, the spring segment 1 of this embodiment is made of carbon steel.

[0033] Furthermore, the spring segment 1 has the same structure as the torsion spring. The spring segment 1 is set to three turns, which not only ensures the binding force on the metal tube, but also reduces the length of the spring segment 1, preventing the inner clamp of the bending point from being piled up and squeezed to cause deformation during bending. According to the different diameters of the metal tube, the inner diameter of the clamp is also different. The metal tube of D50 uses the clamp of the inner diameter D50 series, and the metal tube of D60 uses the clamp of the inner diameter D60 series. The wall thickness of the metal tube to be bent is different, and spring clamps of different diameters are selected. The spring thickness can be 3mm, 4mm or 5mm in diameter. The radial bending segment 2 is formed by bending the head and tail ends of the spring segment 1, which is easy to process and ensures the overall strength of the radial bending segment 2 and the spring segment 1. The two radial bending segments 2 are close to each other, the fixing portion 3 is set to be flat, and the central fixing hole 4 of the fixing portion 3 is convenient for fixing the two radial bending segments 2 to each other.

[0034] Furthermore, by fixing the two radial bending sections 2, the spring section will not be subject to the squeezing force from the inner side of the bend, which will cause the inner diameter to expand when the pipe is bent. During the bending process, when stress concentration occurs at the bending point, causing deformation to protrude outward, the spring clamp will tightly clamp the bent pipe, preventing the bent pipe from deforming and protruding outward, so that its outer contour remains cylindrical. The spring clamp plays the same role as a circular mold. Compared with traditional bending molds, this spring clamp has the advantages of being lighter and capable of bending at a variety of angles.

[0035] Specific implementation method seven: See Figure 3-6 As shown, this embodiment further includes a fixing device, which passes through the fixing hole 4 to fix the two radial bending sections 2, and is used to prevent the clamp from expanding outwards.

[0036] Specific implementation method eight: See Figure 3-6 As shown, the fixing device in this embodiment is a bolt 51.

[0037] Specific implementation method nine: See Figure 3-6 As shown, the fixing device in this embodiment is an expansion clamp 52.

[0038] Specific implementation method ten: See Figure 3-6 As shown, the expansion clamp 52 of this embodiment includes a V-shaped arm 521 , both top ends of the V-shaped arm 521 are provided with an upper support portion 522 , and the middle section of the V-shaped arm 521 is provided with a lower support portion 523 .

[0039] Furthermore, when bending the pipe, in order to prevent the spring clamp from expanding and losing its clamping force, a fixing device is used to fix the two radial bending sections 2 together. The present invention provides two implementation methods, namely, fixing with bolts 51 or expansion clamps 52. The bolts 51 are passed through the two fixing holes 4 in turn and the nuts are tightened to complete the fixation. This method has a firm fixation and high stability. The expansion clamp 52 has a V-shaped arm 521 that can expand outward. The V-shaped arm 521 is folded and passed through the two fixing holes 4 in turn. The upper support part 522 clamps the fixing part 3 at the upper end, and the lower support part 523 clamps the fixing part 3 at the lower end to complete the fixation. This method is easy to disassemble and simple to operate. The fixing device can be selected according to the use environment.

[0040] When using, according to the bending angle, several spring clamps are inserted into the bending part of the steel pipe at a certain interval, and then the two radial bending sections 2 are fixed by the fixing device, and the metal pipe clamp is installed on the pipe bender to bend the pipe; after the pipe bending is completed, the fixing device is removed and the spring clamp is removed. If there is a blockage, insert a flat-blade screwdriver between the two radial bending sections, unscrew and loosen the spring clamp, and then it can be removed.

Claims

1. A spring clamp for preventing bent pipes from collapsing, comprising a spring segment (1), characterized in that it also comprises a radial bending segment (2), a fixing portion (3) and a fixing hole (4); Both ends of the spring section (1) are provided with radial bending sections (2), the two radial bending sections (2) are located close to each other, a fixing portion (3) is provided on the radial bending section (2), and a fixing hole (4) is opened at the center of the fixing portion (3).

2. The anti-collapse spring clamp for bent pipe according to claim 1, characterized in that: The radial bending section (2) is formed by bending the head and tail ends of the spring section (1).

3. The anti-collapse spring clamp for bent pipe according to claim 1, characterized in that: The fixing portion (3) is arranged in a flat shape so that the two bent sections (2) can be close to each other.

4. The anti-collapse spring clamp for bent pipe according to claim 1, characterized in that: The fixing holes (4) on the two fixing parts (3) are arranged concentrically.

5. The anti-collapse spring clamp for bent pipe according to claim 1, characterized in that: The radial bending section (2) is located outside the spring section (1), and the radial bending section (2) is parallel to the axial direction of the spring section (1).

6. The anti-collapse spring clamp for bent pipe according to claim 1, characterized in that: The spring segment (1) is made of carbon steel.

7. The anti-collapse spring clamp for bent pipe according to claim 1, characterized in that: It also comprises a fixing device, which passes through a fixing hole (4) to fix the two radial bending sections (2), and is used to prevent the clamp from expanding outwards.

8. The anti-collapse spring clamp for bent pipe according to claim 5, characterized in that: The fixing device is a bolt (51).

9. The anti-collapse spring clamp for bent pipe according to claim 5, characterized in that: The fixing device is an expansion clamp (52).

10. The anti-collapse spring clamp for bent pipe according to claim 7, characterized in that: The expansion clamp (52) comprises a V-shaped arm (521), both top ends of the V-shaped arm (521) are provided with an upper support portion (522), and the middle section of the V-shaped arm (521) is provided with a lower support portion (523).

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