Clamp for clamping corrugated steel plate and method for bending corrugated steel plate using the same

Abstract

The present invention discloses a clamp for clamping a corrugated steel plate, including a first clamp and a second clamp, each of which includes an upper clamping plate and a lower clamping plate that match each other, the clamping surfaces of the upper and lower clamping plates being consistent with the corrugated shape of the corrugated steel plate to be clamped; the working end surface of the lower clamping plate is a vertical plane perpendicular to the direction of the corrugated lines, and the working end surface of the upper clamping plate is a corrugated surface that matches the corrugated steel plate to be clamped. The method of bending a corrugated steel plate using the clamp includes the following steps: making two sets of clamps for clamping a corrugated steel plate, clamping the corrugated steel plate using the clamp, the upper and lower clamping surfaces of the clamp fit the upper and lower surfaces of the corrugated steel plate, and the two sets of clamps are respectively located on both sides of the portion to be bent of the corrugated steel plate; fixing one set of clamps, and rotating the other set of clamps to a desired angle with the portion to be bent as the center, so that a corrugated steel plate with a desired bending angle can be obtained.

Description

Technical Field

[0001] The invention discloses a clamp and a method for bending a corrugated steel plate, and in particular relates to a clamp for clamping a corrugated steel plate and a method for bending the corrugated steel plate by using the clamp. Background Art

[0002] The applicant has been committed to the research and application of steel structure pipelines, and has applied for a box-shaped pipeline composed of four outer arch corrugated steel plates / wall panels on the top, bottom, left and right sides. The four corrugated steel plates on the pipeline are connected by bending the side of the corrugated steel plate itself perpendicular to the corrugation direction, and using the flange formed by the bent edge to connect the flange and bolts with the circumferentially adjacent wall panels. However, during production and processing, the ordinary bending method is prone to irregular bending at the bend, affecting the connection operation and the sealing effect after connection.

[0003] Therefore, it is urgent to solve the above technical problems. Summary of the invention

[0004] Patent purpose: The first purpose of the present invention is to provide a clamp for clamping corrugated steel plates, which can effectively avoid the irregular bending phenomenon generated at the bending part of the corrugated steel plates during the bending process.

[0005] A second object of the present invention is to provide a method for bending a corrugated steel plate using a clamp for clamping the corrugated steel plate.

[0006] Technical solution: The present invention discloses a clamp for clamping corrugated steel plates, including a first clamp and a second clamp, the first clamp and the second clamp respectively include an upper clamping plate and a lower clamping plate that cooperate with each other, the clamping surfaces of the upper and lower clamping plates are consistent with the corrugated shape of the corrugated steel plates to be clamped; the working end surface of the lower clamping plate is a vertical plane perpendicular to the direction of the corrugated lines, and the working end surface of the upper clamping plate is a corrugated surface adapted to the corrugated steel plates to be clamped.

[0007] Wherein, a chamfer is provided on the side of the vertical plane away from the clamping surface. The chamfer is provided in the present invention to avoid mutual interference during the bending process of the clamp.

[0008] Preferably, a chamfer is provided on the side of the corrugated surface away from the clamping surface. The chamfer is provided in the present invention to avoid mutual interference during the bending process of the clamp.

[0009] Preferably, the upper and lower clamping plates are made of single-layer or multi-layer corrugated steel plates whose strength is higher than that of the corrugated steel plates to be clamped and whose corrugated shapes are consistent with those of the corrugated steel plates to be clamped.

[0010] The present invention provides a method for bending a corrugated steel plate using a clamp for clamping the corrugated steel plate, comprising the following steps:

[0011] (1) Making a first fixture and a second fixture,

[0012] (2) The corrugated steel plate is clamped by a first clamp and a second clamp, and the upper and lower clamping surfaces of the clamp are in contact with the upper and lower surfaces of the corrugated steel plate, and the first clamp and the second clamp are respectively located on both sides of the corrugated steel plate to be bent;

[0013] (3) Fix the first clamp and rotate the second clamp to the required angle around the part to be bent, so that the corrugated steel plate with the required bending angle can be obtained.

[0014] Wherein, in the step (2), the working end faces of the first clamp and the second clamp are parallel to the bending line of the corrugated steel plate at the part to be bent.

[0015] Furthermore, in the step (2), there is a bending gap between the working end surfaces of the first clamp and the second clamp, and the bending gap ranges from 5 mm to 20 mm.

[0016] Preferably, in step (3), the second clamp is driven to rotate and bend by a connecting rod of the hydraulic cylinder.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: first, the upper and lower clamping surfaces of the clamp of the present invention are consistent with the texture of the corrugated steel plate, so that the corrugated steel plate always maintains the original corrugated shape during the bending process, ensuring that the deformation of the bending area is controllable, regular and orderly, and avoiding irregular bending at the bending point; secondly, the present invention uses two sets of clamps, one set is fixed, and the other set drives the corrugated steel plate to rotate and bend, so as to flexibly control the bending angle, improve the bending efficiency, facilitate mass production, and establish an efficient bending production line; thirdly, the first clamp of the present invention There is a bending gap between the working end face of the upper clamp and the second clamp. The bending gap is set according to the wave pitch and wave height of the corrugated steel plate, and the bending gap range is 5mm to 20mm. When the bending gap is too large, the clamp cannot control the orderly deformation of the bending area, and irregular bending is likely to occur. When the bending gap is too small, the required bending angle cannot be obtained. The working end face of the upper clamping plate 101 is a corrugated surface. When bending, the bottom of the corrugated steel plate to be bent will not crack, and the deformation of the bending point is regular. Finally, the flange edge of the corrugated steel plate formed by the bending of the present invention itself has a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of two sets of clamps clamping a corrugated steel plate in the present invention;

[0019] Figure 2 It is a cross-sectional schematic diagram of two sets of clamps clamping a corrugated steel plate in the present invention;

[0020] Figure 3 It is a schematic diagram of the bending state in the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0022] like Figure 1 As shown, the present invention is a clamp for clamping a corrugated steel plate, comprising a first clamp 1 and a second clamp 2, wherein the first clamp 1 and the second clamp 2 respectively comprise an upper clamping plate 101 and a lower clamping plate 102 which cooperate with each other, wherein the clamping surfaces of the upper clamping plate 101 and the lower clamping plate 102 are consistent with the corrugated shape of the corrugated steel plate 3 to be clamped; the working end surface of the upper clamping plate 101 is a corrugated surface 105 adapted to the corrugated steel plate to be clamped, and the working end surface of the lower clamping plate 102 is a vertical plane 103 perpendicular to the direction of the corrugated lines; wherein a chamfer 104 is provided on the side of the vertical plane 103 away from the clamping surface, and a chamfer 104 is provided on the side of the corrugated surface 105 away from the clamping surface. The upper clamping plate 101 and the lower clamping plate 102 of the present invention can be made of a single-layer or multi-layer corrugated steel plate having a strength higher than that of the corrugated steel plate 3 to be clamped and a corrugated shape consistent with that of the corrugated steel plate 3 to be clamped. The upper clamping plate 101 and the lower clamping plate 102 can be fixed by bolt connection after clamping the corrugated steel plate. The working end surface of the upper clamping plate 101 is set as the corrugated surface 105, which can effectively avoid the bottom cracking phenomenon caused by the bottom of the bending part of the plate to be bent being greatly pulled during the bending process when the working end surface is a vertical plane; in the present invention, the bottom of the corrugated steel plate to be bent will not crack during the bending process, and the deformation of the bending part is regular.

[0023] The present invention provides a method for bending a corrugated steel plate using a clamp for clamping the corrugated steel plate, comprising the following steps:

[0024] (1) Making a first fixture 1 and a second fixture 2,

[0025] (2) Figure 2 As shown, the corrugated steel plate 3 is clamped by a first clamp 1 and a second clamp 2, and the upper clamping plate 101 and the lower clamping plate 102 of the clamp are in contact with the upper and lower surfaces of the corrugated steel plate 3, and the first clamp 1 and the second clamp 2 are respectively located on both sides of the corrugated steel plate 3 to be bent, wherein the first clamp 1 clamps the fixed surface of the corrugated steel plate 3, and the second clamp 2 clamps the surface of the corrugated steel plate 3 to be bent; the working end surfaces of the first clamp 1 and the second clamp 2 are parallel to the bending line of the corrugated steel plate to be bent, and a bending gap is separated between the working end surfaces of the first clamp 1 and the second clamp 2; the bending gap is set according to the wave pitch and wave height of the corrugated steel plate, and the bending gap range is 5mm to 20mm. When the bending gap is too large, the clamp cannot control the orderly deformation of the bending area, and irregular bending is easily generated. When the bending gap is too small, the required bending angle cannot be obtained; the preferred bending gap value of the present invention is 10mm.

[0026] (3) Figure 3As shown, the first clamp 1 is fixed, and the second clamp 2 is driven to rotate by the connecting rod of the hydraulic cylinder. The second clamp 2 is rotated to the required angle with the bending position as the center to obtain the corrugated steel plate with the required bending angle, wherein the connecting rod and the second clamp 2 can be fixed by bolts.

Claims

1. A method for bending a corrugated steel plate using a clamp for clamping a corrugated steel plate, characterized in that: The clamp comprises a first clamp (1) and a second clamp (2), each of which comprises an upper clamping plate (101) and a lower clamping plate (102) that cooperate with each other, wherein the clamping surfaces of the upper and lower clamping plates (101, 102) are consistent with the corrugated shape of the corrugated steel plate (3) to be clamped; the working end surface of the lower clamping plate (102) is a vertical plane (103) perpendicular to the corrugated line direction; and the upper clamping plate (101) is a vertical plane (103) perpendicular to the corrugated line direction. The working end surface of the upper and lower clamping plates (101, 102) is a corrugated surface (105) adapted to the corrugated steel plate to be clamped; a chamfer (104) is provided on the side of the vertical plane (103) away from the clamping surface, and a chamfer (104) is provided on the side of the corrugated surface (105) away from the clamping surface; the upper and lower clamping plates (101, 102) are made of a single-layer or multi-layer corrugated steel plate having a higher strength than the corrugated steel plate (3) to be clamped and a corrugated shape consistent with the corrugated steel plate (3) to be clamped; The method comprises the following steps: (1), manufacturing a first clamp (1) and a second clamp (2), (2) The corrugated steel plate (3) is clamped by using a first clamp (1) and a second clamp (2), the upper and lower clamping surfaces (101, 102) of the clamps are in contact with the upper and lower surfaces of the corrugated steel plate (3), and the first clamp (1) and the second clamp (2) are respectively located on both sides of the portion to be bent of the corrugated steel plate (3); in step (2), the working end surfaces of the first clamp (1) and the second clamp (2) are parallel to the bending line of the portion to be bent of the corrugated steel plate (3); in step (2), there is a bending gap between the working end surfaces of the first clamp (1) and the second clamp (2), and the bending gap has a value in the range of 5 mm to 20 mm; (3) Fix the first clamp (1), and rotate the second clamp (2) to a desired angle with the part to be bent as the center, so as to obtain a corrugated steel plate with a desired bending angle; in step (3), the second clamp (2) is driven to rotate and bend by the connecting rod of the hydraulic cylinder.

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