A fixture for pipeline girth weld inspection

Abstract

The utility model belongs to the field of clamp, concretely relates to a pipe annular weld joint detection clamp, including base, the left -hand end fixed mounting of base has the motor, the pivot of motor penetrates base and with base rotation connection, the pivot right -hand end fixed connection of motor has the bidirectional screw rod, the outside of bidirectional screw rod is connected with the slide through the thread, the slide and base slidingly connect, the upper end fixed connection of slide has the support plate, be provided with rotating mechanism on the support plate, be provided with polishing mechanism on the base. The utility model discloses through the spring action on square bar, and then makes the polishing head can keep and the pipe contact, in and the pipe contact process, can polish to the weld joint, to the weld joint cleaning, avoids the effect of detection of the weld slag at the weld joint.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a fixture for inspecting circumferential welds in pipelines. Background Technology

[0002] Utility model patent CN221725934U discloses a fixture for inspecting pipe welds, including a base, a first clamping member, and a second clamping member. Both the first and second clamping members are located on the same side of the base. The first clamping member cooperates with the base to fix the detection probe, and the second clamping member cooperates with the base to fix the pipe to be inspected. Both the first and second clamping members include a first connecting section, a clamping section, and a second connecting section. The clamping section is connected to both the first and second connecting sections. The clamping section of the first clamping member is adapted to the outer contour of the detection probe, and the clamping section of the second clamping member is adapted to the outer contour of the pipe to be inspected. The first and second connecting sections are connected to the base by fasteners. This utility model provides a fixture for inspecting pipe welds, improving the stability of the detection probe during scanning, maintaining a fixed probe lift distance, and thus ensuring accurate detection data.

[0003] However, the device has some shortcomings. When in use, it is not convenient to clamp and limit pipes of different lengths. At the same time, the weld slag attached to the weld seam can affect the inspection of the weld seam. Utility Model Content

[0004] The purpose of this invention is to provide a clamp for inspecting pipe circumferential welds, which solves the problems that the device is not convenient for clamping and limiting pipes of different lengths during use, and that weld slag attached to the weld can affect the inspection of the weld.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixture for inspecting pipe annular welds, comprising a base, a motor fixedly mounted on the left end of the base, the motor shaft passing through the base and rotatably connected to the base, a bidirectional screw fixedly connected to the right end of the motor shaft, a sliding plate threadedly connected to the outer side of the bidirectional screw, the sliding plate slidably connected to the base, a support plate fixedly connected to the upper end of the sliding plate, a rotating mechanism provided on the support plate, and a grinding mechanism provided on the base.

[0006] Preferably, a slider is fixedly connected to the lower end of the support plate, and the slider is slidably connected to the base. The slider provides auxiliary support to the support plate.

[0007] Preferably, the rotating mechanism includes a support cylinder, which is mounted inside the support plate via bearings. A gear ring is fixedly connected to the outer side of the support cylinder. A motor is fixedly mounted at the left end of the support plate, and the output end of the motor passes through the support plate and is rotatably connected to it. A clamping plate is slidably connected inside the support cylinder, and a screw is threadedly connected inside the support cylinder. The screw and the clamping plate are connected via bearings. The motor drives the gear to rotate the gear ring, which in turn causes the support cylinder to rotate the pipe. This allows for the detection of any position on the pipe weld. Furthermore, the motor drives the bidirectional screw to rotate and the sliding plate to perform threaded motion, enabling the device to support pipes of different lengths.

[0008] Preferably, a gear is fixedly connected to the right end of the motor's output terminal, and the gear meshes with a gear ring. By setting the gear, the gear ring is driven to rotate.

[0009] Preferably, a guide rod is fixedly connected to the surface of the clamping plate, and the guide rod is slidably connected to the support cylinder. The guide rod guides the movement of the clamping plate.

[0010] Preferably, the grinding mechanism includes a square tube, with the upper end of the base fixedly connected to the square tube. A square rod is slidably connected inside the square tube, and a sliding rod is fixedly connected to the surface of the square rod. The sliding rod and the square tube are slidably connected. A spring is installed inside the square tube, and a grinding head is fixedly connected to the upper end of the square rod. The spring acts on the square rod, ensuring the grinding head remains in contact with the pipe. During contact with the pipe, the weld seam can be ground and cleaned, preventing weld slag from affecting the testing results.

[0011] Preferably, one end of the spring is fixedly connected to the square tube, and the other end of the spring is fixedly connected to the square rod. By providing the spring, the square rod can be easily reset.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses an electric motor to drive a gear to rotate a gear ring, which in turn causes the support cylinder to rotate the pipe. This allows for the detection of any position on the pipe weld. Furthermore, by using an electric motor to drive a bidirectional screw to rotate and a sliding plate to perform threaded motion, the device can support pipes of different lengths.

[0014] 2. This utility model uses a spring to act on the square rod, so that the grinding head can maintain contact with the pipe. During the contact with the pipe, the weld can be ground and cleaned, avoiding the weld slag from affecting the detection effect. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A bottom view;

[0017] Figure 3 This utility model Figure 2 A bottom view of the support plate;

[0018] Figure 4 This utility model Figure 1 A cross-sectional view of a rectangular tube.

[0019] In the diagram: 1. Base; 2. Motor; 3. Bidirectional screw; 4. Slide plate; 5. Support plate; 6. Rotating mechanism; 7. Slider; 8. Grinding mechanism; 61. Support cylinder; 62. Gear ring; 63. Motor; 64. Gear; 65. Clamping plate; 66. Screw; 67. Guide rod; 81. Square cylinder; 82. Square rod; 83. Slide rod; 84. Spring; 85. Grinding head. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-3 A fixture for inspecting circumferential welds in pipelines includes a base 1. A motor 2 is fixedly mounted on the left end of the base 1. The rotating shaft of the motor 2 passes through the base 1 and is rotatably connected to the base 1. A bidirectional screw 3 is fixedly connected to the right end of the rotating shaft of the motor 2. A sliding plate 4 is threadedly connected to the outer side of the bidirectional screw 3. The sliding plate 4 is slidably connected to the base 1. A support plate 5 is fixedly connected to the upper end of the sliding plate 4. A rotating mechanism 6 is provided on the support plate 5. A slider 7 is fixedly connected to the lower end of the support plate 5. The slider 7 is slidably connected to the base 1. By setting the slider 7, the support plate 5 is provided with auxiliary support. A grinding mechanism 8 is provided on the base 1.

[0022] Please see Figures 1-3The rotating mechanism 6 includes a support cylinder 61. The support cylinder 61 is mounted inside the support plate 5 via bearings. A gear ring 62 is fixedly connected to the outer side of the support cylinder 61. A motor 63 is fixedly mounted on the left end of the support plate 5. A gear 64 is fixedly connected to the right end of the output end of the motor 63. The gear 64 meshes with the gear ring 62, driving the gear ring 62 to rotate. The output end of the motor 63 passes through the support plate 5 and is rotatably connected to it. A clamping plate 65 is slidably connected inside the support cylinder 61. The inside of the support cylinder 61 is connected via screws... The device is connected by a screw 66, which is connected to a clamping plate 65 via a bearing. A guide rod 67 is fixedly connected to the surface of the clamping plate 65, and the guide rod 67 is slidably connected to the support cylinder 61. By setting the guide rod 67, the movement of the clamping plate 65 is guided. The motor 63 drives the gear 64 to rotate the gear ring 62, which in turn causes the support cylinder 61 to rotate the pipe. This allows for the detection of any position of the pipe weld. Furthermore, the motor 2 drives the bidirectional screw 3 to rotate and the slide plate 4 to perform threaded movement, thus enabling the device to support pipes of different lengths.

[0023] Please see Figure 2 , Figure 4 The grinding mechanism 8 includes a square tube 81. The upper end of the base 1 is fixedly connected to the square tube 81. A square rod 82 is slidably connected inside the square tube 81. A sliding rod 83 is fixedly connected to the surface of the square rod 82. The sliding rod 83 and the square tube 81 are slidably connected. A spring 84 is provided inside the square tube 81. One end of the spring 84 is fixedly connected to the square tube 81, and the other end of the spring 84 is fixedly connected to the square rod 82. By setting the spring 84, the square rod 82 can be easily reset. A grinding head 85 is fixedly connected to the upper end of the square rod 82. The spring 84 acts on the square rod 82, so that the grinding head 85 can keep in contact with the pipe. During the contact with the pipe, the weld can be ground and cleaned to avoid the weld slag at the weld affecting the detection effect.

[0024] The specific implementation process of this utility model is as follows: In use, according to the pipe length adjustment device, the motor 2 is started, and the motor 2 drives the bidirectional screw 3 to rotate. The rotation of the bidirectional screw 3 and the sliding plate 4 make a threaded movement, which in turn causes the sliding plate 4 to drive the support plate 5 to move, causing the position of the support plate 5 on the base 1 to change, which in turn causes the position of the support cylinder 61 to change. The device can support pipes of different lengths. Then, the pipe is passed through the support cylinder 61, and the screw 66 is manually rotated. The rotation of the screw 66 and the support cylinder 61 make a threaded movement, which in turn causes the clamping plate 65 to move. The clamping plate 65 moves and contacts the pipe, clamping the pipe. The pipe is then installed. During the process, the grinding head 85 comes into contact with the square rod 82, causing it to be pressed downwards. This, in turn, causes the square rod 82 to press downwards against the spring 84, bringing the grinding head 85 into contact with the pipe surface. The motor 63 is then activated, driving the gear 64 to rotate the gear ring 62. This, in turn, causes the support cylinder 61 to rotate the pipe. This allows for inspection of any position on the pipe weld. The pipe rotates and slides relative to the grinding head 85. The spring 84 acts on the square rod 82, ensuring that the grinding head 85 remains in contact with the pipe. During this contact, the weld can be ground and cleaned, preventing weld slag from affecting the inspection results.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for inspecting circumferential welds in pipelines, comprising a base (1), characterized in that: A motor (2) is fixedly installed on the left end of the base (1). The shaft of the motor (2) passes through the base (1) and is rotatably connected to the base (1). A double screw (3) is fixedly connected to the right end of the shaft of the motor (2). A slide plate (4) is threadedly connected to the outside of the double screw (3). The slide plate (4) is slidably connected to the base (1). A support plate (5) is fixedly connected to the upper end of the slide plate (4). A rotating mechanism (6) is provided on the support plate (5). A grinding mechanism (8) is provided on the base (1).

2. The fixture for inspecting circumferential welds in pipelines according to claim 1, characterized in that: The lower end of the support plate (5) is fixedly connected to a slider (7), and the slider (7) and the base (1) are slidably connected.

3. The fixture for inspecting circumferential welds in pipelines according to claim 1, characterized in that: The rotating mechanism (6) includes a support cylinder (61). The support cylinder (61) is installed inside the support plate (5) through a bearing. A toothed ring (62) is fixedly connected to the outside of the support cylinder (61). A motor (63) is fixedly installed at the left end of the support plate (5). The output end of the motor (63) passes through the support plate (5) and is rotatably connected to the support plate (5). A clamping plate (65) is slidably connected inside the support cylinder (61). A screw (66) is threadedly connected inside the support cylinder (61). The screw (66) and the clamping plate (65) are connected through a bearing.

4. A fixture for inspecting circumferential welds in pipelines according to claim 3, characterized in that: A gear (64) is fixedly connected to the right end of the output terminal of the motor (63), and the gear (64) meshes with the gear ring (62).

5. A fixture for inspecting circumferential welds in pipelines according to claim 3, characterized in that: A guide rod (67) is fixedly connected to the surface of the clamp (65), and the guide rod (67) and the support cylinder (61) are slidably connected.

6. A fixture for inspecting circumferential welds in pipelines according to claim 1, characterized in that: The grinding mechanism (8) includes a square tube (81), the upper end of the base (1) is fixedly connected to the square tube (81), the inside of the square tube (81) is slidably connected to a square rod (82), the surface of the square rod (82) is fixedly connected to a sliding rod (83), the sliding rod (83) and the square tube (81) are slidably connected, a spring (84) is provided inside the square tube (81), and the upper end of the square rod (82) is fixedly connected to a grinding head (85).

7. A fixture for inspecting circumferential welds in pipelines according to claim 6, characterized in that: One end of the spring (84) is fixedly connected to the square tube (81), and the other end of the spring (84) is fixedly connected to the square rod (82).

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