Metal corrugated pipe bending device

Abstract

The utility model provides a metal corrugated pipe bending device which comprises a frame body, an upper connecting piece, a lower connecting piece and a pushing piece are arranged on the frame body, the upper connecting piece and the lower connecting piece are used for positioning the upper end and the lower end of a metal corrugated pipe respectively, and the pushing piece is arranged between the upper connecting piece and the lower connecting piece. The pushing part comprises a first abutting plate, a second abutting plate and a screw rod, a limiting groove and an installation opening are formed between the first abutting plate and the second abutting plate, the installation opening is formed in the position away from the screw rod, the middle of the screw rod is in threaded connection fit with the frame body, and the front end of the screw rod is rotationally connected to the first abutting plate. Aiming at the defects in the prior art, the utility model provides the metal corrugated pipe bending device which is convenient to disassemble and assemble and is convenient for subsequent detection.

Description

Technical Field

[0001] The utility model relates to a metal bellows detection tool, in particular to a metal bellows bending device. Background Art

[0002] Metal bellows is a kind of pipe with regular wave-like appearance, which is widely used in measuring instruments, mechanical industry, transportation and other industries. Metal bellows are also often used as connecting parts of various conveying pipelines. For this reason, metal bellows used for this purpose often need to undergo various anti-leakage tests, such as anti-leakage performance test after bending under lateral load. This test requires applying a lateral load to the metal bellows to make it bend for a certain time, then sealing one end, and then filling it with muddy water or clean water for a certain time to test whether there is leakage. The load is applied to the metal bellows to make it bend and it needs to be maintained for a certain time, which is inconvenient to disassemble and assemble, resulting in cumbersome operation procedures. For this reason, a corresponding metal bellows bending device is designed to facilitate the detection. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a metal bellows bending device that can be easily disassembled and assembled and facilitates subsequent testing.

[0004] To achieve the above-mentioned purpose, the utility model provides a metal bellows bending device, including a frame, an upper connecting member, a lower connecting member and a pushing member are provided on the frame, the upper connecting member and the lower connecting member are respectively used to position the upper and lower ends of the metal bellows, the pushing member is arranged between the upper connecting member and the lower connecting member, the pushing member includes a first abutment plate, a second abutment plate and a screw, a limiting groove and an installation port are formed between the first abutment plate and the second abutment plate, the installation port is arranged at a position away from the screw, the middle part of the screw is threadedly matched with the frame, and the front end of the screw is rotatably connected to the first abutment plate.

[0005] The advantages of adopting the above technical solution are: by arranging an upper connecting member, a lower connecting member and a pushing member on the frame, the metal bellows is positioned respectively by the upper connecting member and the lower connecting member, and then the pushing member is arranged between the upper connecting member and the lower connecting member, and the metal bellows is installed in the limiting groove through the installation opening formed between the first abutment plate and the second abutment plate to limit it, and then the screw rod that is screwed with the frame in the middle is rotated, so that the screw rod that is rotated with the first abutment plate at the front end pushes the first abutment plate, thereby pushing the metal bellows, forming a lateral load on the metal bellows to cause it to bend, and then the screw rod is rotated in the direction to cause it to retreat, and then the metal bellows is taken out, so that subsequent inspection can be carried out, which is convenient for disassembly and assembly and subsequent inspection.

[0006] The present invention can be further configured as follows: the first abutting plate and the second abutting plate are both arranged in an arc shape, and the limiting groove is formed by the concave surfaces of the first abutting plate and the second abutting plate relative to each other.

[0007] By further configuring the first abutment plate and the second abutment plate to be arc-shaped, and allowing the limiting groove to be formed by the concave surfaces relative to the first abutment plate and the second abutment plate, the limiting groove can better adapt to the shape of the metal bellows.

[0008] The present invention may be further configured as follows: a plurality of raised portions are provided on the concave surface of the first abutting plate, and the raised portions are used to abut against the notches of the metal bellows.

[0009] Through further configuration, a plurality of protrusions are provided on the concave surface of the first abutting plate, so that the protrusions can abut against the notches of the metal bellows, so that the lateral load is borne by the notches of the metal bellows, thereby avoiding deformation of the metal bellows.

[0010] The present invention can be further configured as follows: the frame includes guide rods located on both sides, the pushing member includes an extension portion, and the extension portion is sleeved and matched with the guide rods.

[0011] By further arranging guide rods on both sides of the frame, and then arranging extension parts on the pusher to be sleeved with the guide rods, support can be provided for the pusher and guidance can be formed in the direction of its sliding.

[0012] The utility model can be further configured as follows: the upper connecting member and the lower connecting member are both formed by splicing two oppositely arranged semi-ring parts, the semi-ring parts are provided with ears, and fasteners are passed through the ears of the two opposite semi-ring parts, and the fasteners are respectively rotated and screwed with the two ears.

[0013] Through further configuration, the upper connecting piece and the lower connecting piece are both composed of two opposite semi-ring parts to better adapt to the shape of the metal bellows, and ears are then provided on the extension part, so that the ears on the two opposite semi-ring parts can form a rotational and screw connection with the fasteners respectively. The two semi-ring parts can be loosened and tightened by rotating the fasteners, which facilitates the installation of the metal bellows.

[0014] The present invention can be further configured as follows: a plurality of convex ribs are provided on the inner wall of the semi-annular portion.

[0015] By further configuring, a plurality of convex ribs are additionally provided on the inner wall of the semi-annular portion, so that the clamping effect on the metal bellows can be enhanced by the convex ribs to prevent it from falling out. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of a pusher in an embodiment of the present utility model;

[0018] Figure 3 This is a structural diagram of a connecting piece in an embodiment of the present utility model;

[0019] Among them: frame 1; connecting member 11; pushing member 12; first abutment plate 121; second abutment plate 122; limiting groove 123; mounting opening 124; protrusion 125; guide rod 13; semi-ring portion 14; ear 141; fastener 142; rib 143; screw 2. DETAILED DESCRIPTION

[0020] The utility model is a metal bellows bending device. Figure 1-3 As shown: it includes a frame 1, and the frame 1 is provided with an upper connecting member, a lower connecting member and a pushing member 12. The upper connecting member and the lower connecting member are respectively used to position the upper and lower ends of the metal bellows. In this embodiment, the structures of the upper connecting member and the lower connecting member are consistent, and the difference is only in the installation position and difference. They are collectively referred to as connecting members 11 below. The pushing member 12 is arranged between the two connecting members 11. The pushing member 12 includes a first abutment plate 121, a second abutment plate 122 and a screw 2. A limiting groove 123 and an installation port 124 are formed between the first abutment plate 121 and the second abutment plate 122. The installation port 124 is arranged at a position away from the screw 2. The middle part of the screw 2 is threadedly matched with the frame 1, and the front end of the screw 2 is rotatably connected to the first abutment plate 121.

[0021] The first abutting plate 121 and the second abutting plate 122 are both arranged in an arc shape, and the limiting groove 123 is formed by the opposite concave surfaces of the first abutting plate 121 and the second abutting plate 122 .

[0022] A plurality of protrusions 125 are provided on the concave surface of the first abutting plate 121 , and the protrusions 125 are used to abut against the notches of the metal bellows.

[0023] The frame 1 includes guide rods 13 on both sides, and the pusher 12 includes an extension portion 135 . The extension portion 135 is sleeved and fitted with the guide rods 13 .

[0024] The connecting member 11 is formed by two oppositely arranged semi-annular parts 14, each of which is provided with an ear 141. Fasteners 142 are passed through the ears of the two opposite semi-annular parts 14, and the fasteners 142 are respectively rotated and screwed with the two ears 141.

[0025] A plurality of ribs 143 are provided on the inner wall of the semi-annular portion 14 .

[0026] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A metal bellows bending device, characterized by: The cam is provided with a plurality of connecting members, a plurality of connecting members and a plurality of connecting members, and the plurality of connecting members are connected to each other by a plurality of screw threads. The plurality of connecting members are connected to each other by a plurality of screw threads.

2. The metal bellows bending device according to claim 1, characterized in that: The first abutting plate and the second abutting plate are both arranged in an arc shape, and the limiting groove is formed by the concave surfaces of the first abutting plate and the second abutting plate relative to each other.

3. The metal bellows bending device according to claim 2, characterized in that: The concave surface of the first abutting plate is provided with a plurality of protrusions, and the protrusions are used to abut against the notches of the metal bellows.

4. The metal bellows bending device according to claim 1, 2 or 3, characterized in that: The frame includes guide rods on both sides, and the pushing member includes an extension portion, which is sleeve-fitted with the guide rods.

5. The metal bellows bending device according to claim 1, 2 or 3, characterized in that: The upper connecting piece and the lower connecting piece are both formed by splicing two oppositely arranged semi-ring parts, the semi-ring parts are provided with ears, and fasteners are passed through the ears of the two opposite semi-ring parts, and the fasteners are respectively rotated and screwed with the two ears.

6. The metal bellows bending device according to claim 5, characterized in that: A plurality of convex ribs are arranged on the inner wall of the semi-annular portion.

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