Full-automatic flaw detector for steel pipe

Abstract

The utility model discloses a full-automatic steel pipe flaw detector and relates to the technical field of steel pipe detection. The device comprises a multi-position probe, the multi-position probe comprises a bearing plate, a positioning plate fixed at the end part of the inner side of the bearing plate, a driving gear and a transmission gear which are movably arranged on the side surface of the positioning plate, a screw rod fixed with the transmission gear, a movable plate matched with the screw rod, a connecting rod movably arranged on the side of the movable plate, and a support arm movably connected with the other end of the connecting rod; the probe body is embedded into the end part of the support arm; and the probe body is in fit contact with the interior of the steel pipe. According to the utility model, the multi-position probe is arranged and is in multi-point contact with the interior of the steel pipe, so that flaw detection of multiple positions in the steel pipe can be conveniently carried out at the same time, meanwhile, the multi-position probe is adjusted through the structure of the multi-position probe, the probe body is automatically in contact with the inner wall of the steel pipe, and the flaw detection of the steel pipe is intelligent and efficient through automatic control.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe detection, in particular to a full-automatic flaw detector for steel pipes. Background Art

[0002] Before steel pipes leave the factory, steel pipe manufacturers must conduct flaw detection on them to ensure the quality of the pipes leaving the factory, especially steel pipes used for pressure vessel equipment such as boilers, which have high quality requirements, are large and heavy, and the inside of the pipes is difficult to inspect.

[0003] The existing public patent (publication number CN 206696229 U) discloses an eddy current flaw detection device for the inside of a steel pipe, including a frame, a workbench, an eddy current flaw detector, an automatic detection device and a probe, wherein the workbench is transversely arranged on the frame, a support frame is arranged on the frame at the left end of the workbench, a slide rail is arranged on the support frame, the eddy current flaw detector and the automatic detection device are slidably connected to the slide rail through a connecting piece, respectively, a probe is arranged at the right end of the automatic detection device, and the probe is electrically connected to the eddy current flaw detector. The beneficial effects of the utility model are: convenient for internal inspection of steel pipes, suitable for internal inspection of steel pipes of various diameters, automatic unloading, improved inspection efficiency, and saved manpower.

[0004] However, in the above flaw detection device, the single detection position is single, resulting in low efficiency. To this end, we provide a steel pipe automatic flaw detector to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model is a steel pipe full-automatic flaw detector, comprising a multi-position probe; the multi-position probe comprises a receiving plate, a positioning plate fixed to the inner end of the receiving plate, a driving gear and a transmission gear movably arranged on the side of the positioning plate, a screw fixed to the transmission gear, a moving plate matched with the screw, a connecting rod movably arranged on the side of the moving plate, a support arm movably connected to the other end of the connecting rod, and a probe body embedded in the end of the support arm;

[0007] The probe body is in close contact with the inside of the steel pipe.

[0008] The utility model is further configured that the multi-position probe also includes a guide rod penetrating the corner of the positioning plate and the moving plate, a triangular plate fixed to the end of the guide rod, and a bidirectional motor matched with the driving gear shaft.

[0009] The utility model is further configured that the support arm is a hollow structure, and the end of the support arm is movably connected to the ear seat on the side of the positioning plate.

[0010] The utility model is further configured that a connecting piece is fixed at the middle position of the outer side surface of the receiving plate, and the connecting piece is connected to an external drive.

[0011] The utility model is further configured such that the bidirectional motor is arranged between the positioning plates which are parallel to each other, and the bidirectional motor base is fixed to the side surface of the positioning plate.

[0012] The utility model is further configured that the driving gear is meshed with the transmission gear, and the diameter of the driving gear is one third of the diameter of the transmission gear.

[0013] The utility model is further configured that the outer end portion of the screw rod is movably arranged at the middle position of the triangular plate.

[0014] The utility model is further configured that the positioning plate and the movable plate are fixed to the guide rod via positioning nuts, and the support arms at the same ends are configured to expand outwards.

[0015] The utility model has the following beneficial effects:

[0016] The utility model provides a multi-position probe that contacts multiple points inside the steel pipe, thereby facilitating simultaneous flaw detection of multiple positions inside the steel pipe. At the same time, the multi-position probe adjusts its structure so that the probe body automatically contacts the inner wall of the steel pipe. Its automated control makes the flaw detection of the steel pipe intelligent and efficient.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of one side of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the other side of the overall structure of the utility model.

[0021] Figure 3 It is a side view of the overall structure of the utility model.

[0022] Figure 4 It is a schematic diagram of the overall structure end face of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Socket plate; 2. Connecting piece; 3. Positioning plate; 4. Support arm; 5. Connecting rod; 6. Driving gear; 7. Transmission gear; 8. Guide rod; 9. Screw; 10. Moving plate; 11. Triangular plate; 12. Probe body; 13. Bidirectional motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example

[0027] See also Figure 1-4 The utility model is a fully automatic flaw detector for steel pipes, comprising a multi-position probe; the multi-position probe comprises a receiving plate 1, a positioning plate 3 fixed to the inner end of the receiving plate 1, a driving gear 6 and a transmission gear 7 movably arranged on the side of the positioning plate 3, a screw 9 fixed to the transmission gear 7, a moving plate 10 matched with the screw 9, a connecting rod 5 movably arranged on the side of the moving plate 10, an arm 4 movably connected to the other end of the connecting rod 5, and a probe body 12 embedded in the end of the arm 4; the probe body 12 is in close contact with the inside of the steel pipe;

[0028] The multi-position probe further includes a guide rod 8 passing through the corner of the positioning plate 3 and the moving plate 10 , a triangular plate 11 fixed to the end of the guide rod 8 , and a bidirectional motor 13 matched with the shaft of the driving gear 6 .

[0029] Specifically, in the fully automatic flaw detector for steel pipes proposed in the present application, a multi-position probe is provided to contact multiple points inside the steel pipe, thereby facilitating simultaneous flaw detection at multiple positions inside the steel pipe (the detection principle is a relatively mature technology at present, and no further restrictive description is made here). At the same time, the multi-position probe adjusts its own structure so that the probe body 12 automatically contacts the inner wall of the steel pipe, and its automated control makes the flaw detection of the steel pipe intelligent and efficient.

[0030] During specific use, the multi-position probe is sent into the interior of the steel pipe through an external driving structure. With the start-up of the bidirectional motor 13, the screw 9 is driven to rotate under the linkage action of the driving gear 6 and the transmission gear 7. The movable plate 10 matched with the screw 9 moves linearly along the direction of the screw 9 and is balanced and restricted by the guide rod 8. While the movable plate 10 moves, the support arm 4 is pulled through the connecting rod 5, and then the angle of the support arm 4 is adjusted until the probe body 12 embedded in the end of the support arm 4 contacts the inner wall of the steel pipe for subsequent flaw detection.

[0031] Furthermore, a connecting piece 2 is fixed at the middle position of the outer side surface of the receiving plate 1 , and the connecting piece 2 is connected to an external drive. The support arm 4 is a hollow structure, and the end of the support arm 4 is movably connected to the ear seat on the side surface of the positioning plate 3 .

[0032] Specifically, the connecting member 2 is used to connect the multi-position probe with an external drive. The external drive is generally composed of a telescopic drive and a rotational drive. It is a relatively mature technology at present and no further restrictive description is made here. The support arm 4 is used to install the probe body 12. At the same time, under the traction of the connecting rod 5, the end of the support arm 4 can rotate relative to the ear seat to adjust the angle of the support arm 4.

[0033] Furthermore, the bidirectional motor 13 is arranged between the parallel positioning plates 3 , the base of the bidirectional motor 13 is fixed to the side of the positioning plate 3 , the driving gear 6 is meshed with the transmission gear 7 , and the diameter of the driving gear 6 is one third of the diameter of the transmission gear 7 .

[0034] Specifically, when the bidirectional motor 13 is started, its output shaft drives the drive gear 6 to rotate, and the transmission gear 7 meshing with the drive gear 6 rotates accordingly. The drive gear 6 has a smaller diameter than the transmission gear 7, and is used to slow down the drive of the bidirectional motor 13 to prevent the screw 9 from rotating too fast, resulting in excessive impact force between the arm 4 and the probe body 12 and the inner wall of the steel pipe, causing damage to the probe body 12.

[0035] Furthermore, the outer end of the screw rod 9 is movably arranged in the middle position of the triangular plate 11, the positioning plate 3 and the movable plate 10 are fixed to the guide rod 8 via positioning nuts, and the support arm 4 at the same end is expanded outward.

[0036] Specifically, the positioning plate 3 and the movable plate 10 are relatively fixed with the guide rod 8 under the fixing action of the positioning nut, forming the main installation structure of the multi-position probe. After the outer end of the screw rod 9 is movably installed in the middle position of the triangular plate 11, the screw rod 9 can rotate stably.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fully automatic flaw detector for steel pipes, comprising a plurality of probes; characterized in that: The multi-position probe comprises a receiving plate (1), a positioning plate (3) fixed to the inner end of the receiving plate (1), a driving gear (6) and a transmission gear (7) movably arranged on the side of the positioning plate (3), a screw (9) fixed to the transmission gear (7), a moving plate (10) matched with the screw (9), a connecting rod (5) movably arranged on the side of the moving plate (10), an arm (4) movably connected to the other end of the connecting rod (5), and a probe body (12) embedded in the end of the arm (4); The probe body (12) is in close contact with the inside of the steel pipe.

2. A steel pipe automatic flaw detector according to claim 1, characterized in that: The multi-position probe further comprises a guide rod (8) passing through the corner of the positioning plate (3) and the moving plate (10), a triangular plate (11) fixed to the end of the guide rod (8), and a bidirectional motor (13) matched with the shaft of the driving gear (6).

3. The fully automatic flaw detector for steel pipes according to claim 1, characterized in that: The support arm (4) is a hollow structure, and the end of the support arm (4) is movably connected to the ear seat on the side of the positioning plate (3).

4. The fully automatic flaw detector for steel pipes according to claim 1, characterized in that: A connecting piece (2) is fixed at the middle position of the outer side surface of the receiving plate (1), and the connecting piece (2) is connected to an external drive.

5. The fully automatic flaw detector for steel pipes according to claim 2, characterized in that: The bidirectional motor (13) is arranged between the parallel positioning plates (3), and the base of the bidirectional motor (13) is fixed to the side of the positioning plate (3).

6. The fully automatic flaw detector for steel pipes according to claim 1, characterized in that: The driving gear (6) is meshed with the transmission gear (7), and the diameter of the driving gear (6) is one third of the diameter of the transmission gear (7).

7. The fully automatic flaw detector for steel pipes according to claim 1, characterized in that: The outer end of the screw rod (9) is movably arranged at the middle position of the triangular plate (11).

8. The fully automatic flaw detector for steel pipes according to claim 2, characterized in that: The positioning plate (3) and the movable plate (10) are fixed to the guide rod (8) via positioning nuts, and the support arms (4) at the same ends are arranged to expand outwards.

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