Cylindrical pipeline roundness detection device

Abstract

The utility model relates to the technical field of pipeline detection, in particular to a cylindrical pipeline roundness detection device. The utility model provides a cylindrical pipeline roundness detection device which can more intuitively judge the surface defect condition of a cylindrical pipeline and cannot damage the surface of the broken cylindrical pipeline. A cylindrical pipeline roundness detection device comprises a supporting frame, a three-jaw chuck, a supporting cylinder, a contact frame and the like, the left side of the supporting frame is rotatably connected with the three-jaw chuck, the top of the supporting frame is connected with the supporting cylinder, and the bottom of the supporting cylinder is slidably connected with the contact frame. The contact frame moves upwards to drive the piston piece to move, the piston piece moves upwards to compress air in the piston barrel, so that the piston rod slides upwards, and the surface defect condition of the cylindrical pipeline can be judged more visually by observing the distance of the piston rod moving upwards on the reading ruler. And the surface of the broken cylindrical pipeline cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection, in particular to a cylindrical pipeline roundness detection device. Background Art

[0002] Roundness testing of cylindrical pipes is a key step to ensure that the pipe geometry meets the requirements. Roundness refers to the degree of deviation of the surface of a cylindrical object from an ideal circle.

[0003] Patent publication number: CN208536813U A device for detecting the non-roundness of the outer wall of a pipe, comprising a base and a left support column and a right support column symmetrically arranged on the base, the left support column and the right support column are both movably connected to the base, the left support column and the right support column are fixed with drive motors facing each other, each drive motor output end is connected to a support device, and the base also has support rods of equal height on the same line as the left support column and the right support column and located on both sides of the left support column and the right support column respectively, the tops of the two support rods are connected by a cross bar, a sleeve that can move along the cross bar is sleeved on the cross bar, a guide block is arranged outside the cross bar, a guide groove that cooperates with the guide block is arranged inside the sleeve, and a detection device assembly is connected to the bottom of the sleeve through a telescopic connecting rod; the utility model has the advantages of simple structure, convenient use, and qualitative detection of the non-roundness of the outer wall of the pipe. However, the above-mentioned existing device uses a stroke form to measure the roundness of the cylindrical pipe, and the ink residue on the roundness of the cylindrical pipe is not easy to clean, and the ink easily erodes the surface coating of the cylindrical pipe, affecting the quality of the cylindrical pipe.

[0004] Therefore, a cylindrical pipe roundness detection device has been developed which can more intuitively judge the surface defects of the cylindrical pipe and will not cause damage to the surface of the broken cylindrical pipe. Utility Model Content

[0005] In order to overcome the shortcomings of the existing device that uses pen strokes to measure the roundness of the cylindrical pipe, the ink residue on the roundness of the cylindrical pipe is difficult to clean, and the ink easily corrodes the surface coating of the cylindrical pipe, affecting the quality of the cylindrical pipe, the utility model provides a cylindrical pipe roundness detection device which can more intuitively judge the surface defects of the cylindrical pipe and will not damage the surface of the broken cylindrical pipe.

[0006] The technical solution of the utility model is: a cylindrical pipe roundness detection device, including a support frame, a three-jaw chuck, a support tube, a contact frame, an elastic member and an amplification mechanism, the left side of the support frame is rotatably connected to the three-jaw chuck, the top of the support frame is connected to the support tube, the bottom of the support tube is slidably connected to the contact frame, an elastic member is connected between the contact frame and the support tube, and the support tube is provided with the amplification mechanism for amplifying the detection result for convenient observation.

[0007] Optionally, the amplification mechanism includes a piston plate, a piston cylinder, a piston rod and an indicating scale. The piston plate is connected to the top of the contact frame, and the piston plate is slidably connected to the inner wall of the support cylinder. The top of the support cylinder is connected to the piston cylinder, the piston rod is slidably connected to the inner side of the upper part of the piston cylinder, and the indicating scale is connected to the upper right side of the piston cylinder. The piston rod is slidably connected to the indicating scale. When the contact frame contacts the protrusion on the surface of the cylindrical pipe, it will move upward in the support cylinder, and the upward movement of the contact frame drives the piston plate to move. The upward movement of the piston plate compresses the air in the piston cylinder, causing the piston rod to slide upward, and the surface defect of the cylindrical pipe can be judged by observing the upward movement distance of the piston rod on the indicating scale.

[0008] Optionally, a supporting mechanism is also included, which includes an electric push rod, a connecting frame and a conical cylinder. The electric push rod is connected to the rear side of the right part of the three-jaw chuck, the connecting frame is connected to the telescopic end of the electric push rod, and the conical cylinder is connected to the front of the connecting frame. When the cylindrical pipe is set on the three-jaw chuck, the connecting frame is controlled by the electric push rod to drive the conical cylinder to move and penetrate into the inner side of the right part of the cylindrical pipe, so as to support the right part of the cylindrical pipe and prevent the cylindrical pipe from falling and tilting.

[0009] Optionally, supporting feet are also included, and the lower sides of the left and right parts of the supporting frame are both connected to the supporting feet.

[0010] Optionally, the elastic member is the spring.

[0011] Optionally, the indicating ruler is provided with scales.

[0012] The utility model has the following advantages: the utility model drives the piston plate to move by the upward movement of the contact frame, and the upward movement of the piston plate compresses the air in the piston cylinder, so that the piston rod slides upward, and by observing the upward movement distance of the piston rod on the indicator ruler, the surface defects of the cylindrical pipe can be judged more intuitively, and no damage is caused to the surface of the broken cylindrical pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the amplifying mechanism of the utility model.

[0016] Figure 4 It is a cross-sectional view of the enlargement mechanism of the utility model.

[0017] Figure 5 It is a schematic diagram of the three-dimensional structure of the support mechanism of the utility model.

[0018] Markings in the accompanying drawings: 1-support frame, 2-three-jaw chuck, 3-support foot, 4-support cylinder, 5-contact frame, 6-spring, 7-amplification mechanism, 71-piston plate, 72-piston cylinder, 73-piston rod, 74-indicating ruler, 8-support mechanism, 81-electric push rod, 82-connecting frame, 83-conical cylinder. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0020] A cylindrical pipe roundness detection device, such as Figure 1 and Figure 2 As shown, it includes a support frame 1, a three-jaw chuck 2, a support foot 3, a support cylinder 4, a contact frame 5, a spring 6 and an amplifying mechanism 7. The three-jaw chuck 2 is rotatably connected to the left side of the support frame 1, the support feet 3 are connected to the lower sides of the left and right parts of the support frame 1, the top of the support frame 1 is connected to the support cylinder 4, the bottom of the support cylinder 4 is slidably connected to the contact frame 5, the spring 6 is connected between the contact frame 5 and the support cylinder 4, and the amplifying mechanism 7 is provided on the support cylinder 4.

[0021] like Figure 1 , Figure 3 and Figure 4 As shown, the amplification mechanism 7 includes a piston plate 71, a piston cylinder 72, a piston rod 73 and an indicator scale 74. The piston plate 71 is connected to the top of the contact frame 5, and the piston plate 71 is slidably connected to the inner wall of the support cylinder 4. The top of the support cylinder 4 is connected to the piston cylinder 72, and the piston rod 73 is slidably connected to the inner side of the upper part of the piston cylinder 72. The indicator scale 74 is connected to the right side of the upper part of the piston cylinder 72, and the piston rod 73 is slidably connected to the indicator scale 74, and the indicator scale 74 is provided with scales.

[0022] like Figure 1 and Figure 5 As shown, it also includes a supporting mechanism 8, which includes an electric push rod 81, a connecting frame 82 and a conical cylinder 83. The electric push rod 81 is connected to the rear side of the right part of the three-jaw chuck 2, the connecting frame 82 is connected to the telescopic end of the electric push rod 81, and the conical cylinder 83 is connected to the front of the connecting frame 82.

[0023] When the utility model is in use, the cylindrical pipe to be inspected is first fixed on the support frame 1 by the three-jaw chuck 2. When the cylindrical pipe is set on the three-jaw chuck 2, the connecting frame 82 is controlled by the electric push rod 81 to drive the conical cylinder 83 to move and penetrate into the inner side of the right part of the cylindrical pipe, support the right part of the cylindrical pipe, prevent the cylindrical pipe from falling and tilting, and then rotate the three-jaw chuck 2 to drive the cylindrical pipe to rotate. Since the surface of the cylindrical pipe contacts the contact frame 5, when the cylindrical pipe has a visible When the pressure difference between the piston plate 71 and the piston tube 72 changes, the convex part of the cylindrical pipe will press the contact frame 5 upward, and the contact frame 5 moves upward to drive the piston plate 71 to move. The piston plate 71 moves upward to compress the air in the piston cylinder 72, so that the piston rod 73 slides upward. By observing the upward movement distance of the piston rod 73 on the indicator scale 74, the surface defect of the cylindrical pipe can be judged. After the detection is completed, the electric push rod 81 is used to control the tapered cylinder 83 to reset, and then the three-jaw chuck 2 is unlocked to remove the cylindrical pipe.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A cylindrical pipe roundness detection device, characterized in that: The invention comprises a support frame (1), a three-jaw chuck (2), a support cylinder (4), a contact frame (5), an elastic member and an amplifying mechanism (7), wherein the left side of the support frame (1) is rotatably connected to the three-jaw chuck (2), the top of the support frame (1) is connected to the support cylinder (4), the bottom of the support cylinder (4) is slidably connected to the contact frame (5), an elastic member is connected between the contact frame (5) and the support cylinder (4), and the support cylinder (4) is provided with the amplifying mechanism (7) for amplifying the detection result for convenient observation.

2. A cylindrical pipe roundness detection device according to claim 1, characterized in that: The amplifying mechanism (7) comprises a piston plate (71), a piston cylinder (72), a piston rod (73) and an indicator scale (74); the piston plate (71) is connected to the top of the contact frame (5); the piston plate (71) is slidably connected to the inner wall of the support cylinder (4); the piston cylinder (72) is connected to the top of the support cylinder (4); the piston rod (73) is slidably connected to the inner side of the upper part of the piston cylinder (72); the indicator scale (74) is connected to the right side of the upper part of the piston cylinder (72); the piston rod (73) is slidably connected to the indicator scale (74). When the contact frame (5) contacts the protrusion on the surface of the cylindrical pipe, it moves upward in the support tube (4). The upward movement of the contact frame (5) drives the piston plate (71) to move. The upward movement of the piston plate (71) compresses the air in the piston tube (72), causing the piston rod (73) to slide upward. By observing the upward movement distance of the piston rod (73) on the indicator scale (74), the surface defect of the cylindrical pipe can be judged.

3. A cylindrical pipe roundness detection device according to claim 2, characterized in that: The invention also comprises a supporting mechanism (8), wherein the supporting mechanism (8) comprises an electric push rod (81), a connecting frame (82) and a conical tube (83); the electric push rod (81) is connected to the rear side of the right part of the three-jaw chuck (2); the connecting frame (82) is connected to the telescopic end of the electric push rod (81); the conical tube (83) is connected to the front part of the connecting frame (82); when a cylindrical pipe is arranged on the three-jaw chuck (2), the connecting frame (82) is controlled by the electric push rod (81) to drive the conical tube (83) to move and penetrate into the inner side of the right part of the cylindrical pipe, thereby supporting the right part of the cylindrical pipe and preventing the cylindrical pipe from falling and tilting.

4. A cylindrical pipe roundness detection device according to claim 3, characterized in that: It also comprises supporting feet (3), and the lower sides of the left and right parts of the supporting frame (1) are both connected to the supporting feet (3).

5. The cylindrical pipe roundness detection device according to claim 1 is characterized in that: The elastic member is a spring (6).

6. A cylindrical pipe roundness detection device according to claim 2, characterized in that: The indicator ruler (74) is provided with scales.

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