Metal material deformation crack detection device

Abstract

The utility model discloses a metal material deformation crack detection device, and relates to the technical field of metal material detection. The metal material deformation crack detection device comprises a mounting base, a positioning piece, an external detection piece and an internal detection piece, a lower transverse plate and an upper transverse plate are arranged on a supporting frame, a first motor and a placement disc are arranged on the lower transverse plate, the upper transverse plate is connected with the positioning piece through a guide sleeve, and the positioning piece and the placement disc are matched to limit a metal material; and the metal material is driven to rotate, the detection probe on the supporting frame can conveniently detect external cracks of the metal material, the detection probe moves up and down through the gear on the second motor and the tooth groove in the supporting frame, and the detection efficiency and comprehensiveness are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal material detection, in particular to a metal material deformation and crack detection device. Background Art

[0002] Metallic materials are prone to cracks during the production and processing process. The cracks not only weaken the mechanical strength of the metal materials, but may also continue to expand under the action of external force loads during use, thereby posing a safety hazard to the use of mechanical and engineering equipment.

[0003] Existing deformation crack detection of metal materials generally uses detectors to detect. After each detection of a position, the existing detector needs to be manually moved to detect other positions of the metal material, which can easily lead to incomplete detection and high labor intensity. Some detection devices use external force to apply to the metal material to reveal the cracks inside the metal material. Such detection devices cause the metal material to be damaged, which can easily lead to the inability to distinguish between the defects of the metal material that originally existed or the defects newly added by the external force.

[0004] The utility model with publication number CN214895263U discloses a metal material deformation crack detection device, including a frame and a clamping mechanism. A lower mounting plate and an upper mounting plate are fixedly installed on the front side of the frame, and a clamping mechanism is provided between the lower mounting plate and the upper mounting plate for elastically clamping the metal material and driving the metal material to rotate. A slide groove is provided on the vertical plate of the frame, and a detector that can move up and down is provided inside the slide groove.

[0005] As shown in the above utility model, the existing detection device detects cracks in metal materials by moving the detector up and down, but this method can only detect cracks on the surface of the metal material and cannot detect cracks inside the metal material without destroying the metal material. Utility Model Content

[0006] In view of the deficiencies in the prior art, the present invention provides a metal material deformation crack detection device to solve the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A metal material deformation crack detection device, comprising:

[0008] A mounting base, the mounting base is composed of a support frame, a lower transverse plate and an upper transverse plate, the lower transverse plate and the upper transverse plate are both fixed to the support frame, a first motor is fixed to the lower surface of the lower transverse plate, an output shaft of the first motor is fixed to a placement plate, and the placement plate is located on the upper surface of the lower transverse plate;

[0009] A positioning member, the positioning member is provided on the upper horizontal plate and is used to cooperate with the placement plate to limit the metal material;

[0010] An external detection member, the external detection member is provided on the support frame and is used to detect cracks on the surface of the metal material;

[0011] The internal detection part is arranged on the support frame and is used to detect cracks inside the metal material.

[0012] Preferably, a guide sleeve is fixed to the upper surface of the upper transverse plate, and one side of the guide sleeve is connected to a limit knob through a screw hole.

[0013] Preferably, a linear slot is provided in the middle of the upper end of the support frame, a guide column is provided in the linear slot, and a tooth groove is provided on the side of the linear slot located at the back opening of the support frame.

[0014] Preferably, the positioning member includes a positioning rod, which passes through the through holes on the guide sleeve and the upper horizontal plate in sequence. A pressure block is fixed to the bottom end of the positioning rod, and a rubber block is bonded to the lower surface of the pressure block.

[0015] Preferably, the external detection part includes a first mounting plate, the first mounting plate is in contact with the front of the support frame, a detection probe is installed on the first mounting plate, a movable block is fixed to the outer side of the first mounting plate, a guide groove is provided in the middle of the movable block, the guide groove is connected with the guide column, a second mounting plate is fixed to one end of the movable block, the second mounting plate is in contact with the back of the support frame, a second motor is installed on the second mounting plate, a gear is fixed to the output shaft of the second motor, and the gear is meshed with the tooth groove.

[0016] Preferably, the internal detection part includes multiple groups of protruding plates fixed on both sides of the upper end of the support frame, each group is provided with two protruding plates, and a winding roller is movably connected between the two protruding plates through a pin shaft and a torsion spring. A detection line is wound on the winding roller, and a conductive patch is fixed at one end of the detection line, and the conductive patch is clamped at a limit plate fixed on the support frame.

[0017] Beneficial effects

[0018] The utility model provides a metal material deformation crack detection device. Compared with the existing technology, it has the following advantages:

[0019] 1. The metal material deformation crack detection device is provided with a lower horizontal plate and an upper horizontal plate on the support frame, the lower horizontal plate is provided with a first motor and a placement plate, the upper horizontal plate is connected to a positioning piece through a guide sleeve, the positioning piece and the placement plate cooperate to limit the metal material and drive the metal material to rotate, so that the detection probe on the support frame can detect external cracks of the metal material. The detection probe moves up and down through the gear on the second motor and the tooth groove on the support frame, thereby improving the efficiency and comprehensiveness of the detection.

[0020] 2. The metal material deformation crack detection device is equipped with an internal detection part on the support frame. The detection line on the internal detection part cooperates with the conductive patch to set two or more electrodes on the metal material. The conductivity imaging method and the potential drop method are used to detect cracks inside the metal material, thereby improving the detection accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the mounting base structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the back of the overall structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the positioning member structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the external detection component of the utility model;

[0026] Figure 6 This is a schematic diagram of the internal detection component structure of the present utility model.

[0027] In the figure: mounting base 1, support frame 11, lower horizontal plate 12, first motor 13, placement plate 14, upper horizontal plate 15, guide sleeve 16, limit knob 17, linear slot 18, guide column 19, tooth groove 110, positioning member 2, positioning rod 21, pressure block 22, rubber block 23, external detection member 3, first mounting plate 31, detection probe 32, movable block 33, guide groove 34, second mounting plate 35, second motor 36, gear 37, internal detection member 4, convex plate 41, winding roller 42, detection line 43, conductive patch 44, limit plate 45. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-6 , this utility model provides two technical solutions:

[0030] The first embodiment: A metal material deformation crack detection device includes a mounting seat 1, a positioning member 2, an external detection member 3 and an internal detection member 4.

[0031] The mounting base 1 is composed of a support frame 11, a lower transverse plate 12 and an upper transverse plate 15. The lower transverse plate 12 and the upper transverse plate 15 are both fixed on the support frame 11. A first motor 13 is fixed to the lower surface of the lower transverse plate 12. The first motor 13 is a servo motor. The output shaft of the first motor 13 is fixed with a placement disk 14. The metal material is placed on the placement disk 14. The first motor 13 cooperates with the placement disk 14 to drive the metal material to rotate for easy detection. The placement disk 14 is located on the upper surface of the lower transverse plate 12, and a guide sleeve 16 is fixed to the upper surface of the upper transverse plate 15. One side of the guide sleeve 16 is connected to the limit knob 17 through a screw hole. A linear slot 18 is provided in the middle of the upper end of the support frame 11, and a guide column 19 is provided in the linear slot 18. The linear slot 18 is located on the back opening side of the support frame 11 and is provided with a tooth groove 110.

[0032] The positioning member 2 is arranged on the upper horizontal plate 15 and is used to cooperate with the placement plate 14 to limit the metal material. The positioning member 2 includes a positioning rod 21. The positioning rod 21 passes through the through holes on the guide sleeve 16 and the upper horizontal plate 15 in sequence. The limiting knob 17 on the guide sleeve 16 cooperates with the screw hole to squeeze and limit the positioning rod 21. A pressure block 22 is fixed to the bottom end of the positioning rod 21, and a rubber block 23 is bonded to the lower surface of the pressure block 22. The positioning rod 21 cooperates with the pressure block 22 and the rubber block 23 thereon to contact the top of the metal material, thereby limiting the metal material to a certain extent, so that the metal material can rotate stably on the placement plate 14.

[0033] The external detection part 3 is arranged on the support frame 11 and is used to detect cracks on the surface of the metal material. The external detection part 3 includes a first mounting plate 31. The first mounting plate 31 is in contact with the front surface of the support frame 11. A detection probe 32 is installed on the first mounting plate 31. The detection probe 32 is a high-definition camera that can clearly detect whether there are cracks on the surface of the metal material. The detection probe 32 is connected to an external high-definition display. A movable block 33 is fixed on the outer side of the first mounting plate 31. A guide groove 34 is provided in the middle of the movable block 33. The guide groove 34 is connected to the guide column 19 through and plays a guiding role. The detection probe 32 keeps moving vertically up and down due to the action of the direction. A second mounting plate 35 is fixed to one end of the movable block 33. The second mounting plate 35 is in contact with the back of the support frame 11. A second motor 36 is installed on the second mounting plate 35. The second motor 36 is a stepping motor. A gear 37 is fixed to the output shaft of the second motor 36. The gear 37 is engaged with the tooth groove 110. The second motor 36 drives the gear 37 to rotate. The engagement of the gear 37 with the tooth groove 110 drives the second mounting plate 35 to move up and down, and then drives the first mounting plate 31 and the detection probe 32 to move up and down through the movable block 33.

[0034] The second embodiment is different from the first embodiment in that the internal detection part 4 is arranged on the support frame 11 and is used to detect cracks inside the metal material. The internal detection part 4 includes multiple groups of convex plates 41 fixed on both sides of the upper end of the support frame 11. Each group is provided with two convex plates 41. A winding roller 42 is movably connected between the two convex plates 41 through a pin and a torsion spring. A detection line 43 is wound around the winding roller 42. The detection line 43 is connected to an external power supply. The detection lines 43 on both sides of the support frame 11 are respectively connected to the power supply. The two output ends of the support frame 11 are connected by the conductive material when the detection lines 43 on both sides are connected. A path is formed. The setting of the torsion spring enables the detection line 43 to automatically wind and reset after being stretched. A conductive patch 44 is fixed to one end of the detection line 43. The conductive patch 44 can be fitted with the metal material by magnetic attraction or adhesive bonding. The conductive patch 44 is clamped to the limiting piece 45 fixed on the support frame 11. The limiting piece 45 is set to an L-shaped structure, and an opening is provided in the middle thereof to facilitate limiting the conductive patch 44.

[0035] When the device is in use, the metal material is first placed on the placement plate 14, and then the rubber block 23 at the bottom end of the positioning rod 21 contacts the top of the metal material, and then the limit knob 17 is turned to limit the positioning rod 21, and then the surface of the metal material is detected for cracks through the detection probe 32. During this process, the first motor 13 is started, and the first motor 13 drives the placement plate 14 to rotate, and then drives the metal material to rotate, so that the detection probe 32 can detect different positions of the metal material. At the same time, the second motor 36 is started, and the second motor 36 drives the gear 37 to rotate. The gear 37 engages with the tooth groove 110 to drive the second mounting plate 35 to move up and down, and then drives the first mounting plate 31 and the detection probe 32 to move up and down through the movable block 33, so that the detection probe 32 can detect different heights of the metal material, thereby improving the comprehensiveness of the external detection.

[0036] After the external detection is completed, the driving of the first motor 13 and the second motor 36 is stopped, and then the conductive patch 44 is removed from the limiting piece 45, and the detection line 43 is stretched, and then the conductive patch 44 is attached to the outer surface of the metal material;

[0037] When using the conductivity imaging method, multiple conductive patches 44 are attached to different positions of the metal material, current is applied to the metal material being tested, and the voltage distribution on the material surface is measured. When there is a crack inside the material, the current line will be distorted due to the change in resistivity at the crack, resulting in a change in the surface voltage distribution. By setting multiple electrodes and continuously changing the combination of electrode pairs for current injection and measurement, a large amount of voltage measurement data can be obtained. Then, an inversion algorithm is used to reconstruct the conductivity (the inverse of the resistivity) distribution image inside the material based on the measured voltage data, thereby determining the location of the crack;

[0038] When using the potential drop method, a conductive patch 44 is selected on both sides of the support frame 11 and attached to the two ends of the metal material, and a constant current is applied to measure the potential difference between different points on the surface of the material. When there is a crack inside the material, the resistivity of the crack area increases, which will cause the current path to change, thereby changing the surface potential difference distribution. By measuring the change in potential difference at different positions along the surface of the material, the location of the crack is determined according to the location of the abnormal potential difference.

[0039] At the same time, the contents not described in detail in this specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal material deformation crack detection device, characterized in that: include: A mounting base, the mounting base is composed of a support frame, a lower transverse plate and an upper transverse plate, the lower transverse plate and the upper transverse plate are both fixed to the support frame, a first motor is fixed to the lower surface of the lower transverse plate, an output shaft of the first motor is fixed to a placement plate, and the placement plate is located on the upper surface of the lower transverse plate; A positioning member is provided on the upper horizontal plate and is used to cooperate with the placement plate to limit the position of the metal material; An external detection member, the external detection member is provided on the support frame and is used to detect cracks on the surface of the metal material; The internal detection part is arranged on the support frame and is used to detect cracks inside the metal material.

2. The metal material deformation crack detection device according to claim 1, characterized in that: A guide sleeve is fixed on the upper surface of the upper transverse plate, and one side of the guide sleeve is connected to a limit knob through a screw hole.

3. The metal material deformation crack detection device according to claim 1, characterized in that: A linear slot is provided in the middle of the upper end of the support frame, a guide column is provided in the linear slot, and a tooth groove is provided on one side of the rear opening of the linear slot.

4. The metal material deformation crack detection device according to claim 1, characterized in that: The positioning member includes a positioning rod, which passes through the guide sleeve and the through holes on the upper horizontal plate in sequence. A pressing block is fixed to the bottom end of the positioning rod, and a rubber block is bonded to the lower surface of the pressing block.

5. The metal material deformation crack detection device according to claim 4, characterized in that: The external detection part includes a first mounting plate, which is in contact with the front side of the support frame, and a detection probe is installed on the first mounting plate. A movable block is fixed on the outer side of the first mounting plate, and a guide groove is provided in the middle of the movable block. The guide groove is connected with the guide column. A second mounting plate is fixed to one end of the movable block, and the second mounting plate is in contact with the back side of the support frame. A second motor is installed on the second mounting plate, and a gear is fixed to the output shaft of the second motor, and the gear is meshed with the tooth groove.

6. The metal material deformation crack detection device according to claim 4, characterized in that: The internal detection part includes multiple groups of convex plates fixed on both sides of the upper end of the support frame, each group is provided with two convex plates, and a winding roller is movably connected between the two convex plates through a pin shaft and a torsion spring. A detection line is wound on the winding roller, and a conductive patch is fixed at one end of the detection line, and the conductive patch is clamped at the limit plate fixed on the support frame.

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