Automatic lead breaking device controlled by electromagnet

Abstract

The utility model relates to an automatic lead breaking device controlled by an electromagnet, which comprises a support base, a clamping mechanism hinged with the support base and used for clamping a pencil, an electromagnet mechanism comprising electromagnetic equipment and a thrust component, the electromagnetic equipment is arranged on the support base, the thrust component is magnetically connected with the electromagnetic equipment, the tail end of the pencil is arranged on the thrust component, and the lead breaking device is arranged on the support base. The thrust assembly has a first state in which the thrust assembly is matched with the electromagnetic equipment to drive the pen tail end to adjust so as to keep the refill of the pencil in contact with the test surface, and a second state in which the thrust assembly drives the pen tail end to lift up so as to enable the refill of the pencil to be pressed down and broken off; on one hand, an acoustic emission analog signal can be better and automatically provided for an acoustic emission nondestructive testing experiment, the influence and interference of manual lead breaking on a lead breaking signal are avoided, and meanwhile, the problem of time synchronization of a plurality of acoustic emission signal sources is solved; in addition, the device is simple in structure, convenient to process and manufacture, flexible to operate and easy to popularize and apply in the field of acoustic emission nondestructive testing.

Description

Technical Field

[0001] The utility model relates to the technical field of acoustic emission, in particular to an automatic lead shorting device controlled by an electromagnet. Background Art

[0002] Acoustic emission technology is a method for non-destructive testing of materials or components. It is currently widely used in aerospace, bridge, railway and other industries. When using acoustic emission technology to detect defects in large metal equipment, it is necessary to determine the characteristics of the acoustic emission signal when the large equipment has defects. Since it is impossible to determine the time when the equipment has defects, simulated signals are generally used for experiments.

[0003] At present, lead-breaking signals are all generated by hand or by a manual lead-breaker. This lead-breaking method is greatly affected by human factors, which will lead to large differences when comparing multiple analog signals. In addition, the manual lead-breaking method cannot generate lead-breaking signals at different positions of large equipment at the same time. Therefore, there is a need for an automatic lead-breaking device that can stably break the pencil on the test surface without human operation and can break multiple pencils at different positions almost simultaneously to generate acoustic emission simulation signals. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect that the lead breaking signal generated by the manual lead breaker in the prior art is inaccurate due to the influence of human factors, thereby providing an automatic lead breaking device controlled by an electromagnet.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An automatic lead-breaking device controlled by an electromagnet, comprising:

[0007] Support base,

[0008] The clamping mechanism is hinged to the support base and is used to clamp the pencil.

[0009] The electromagnet mechanism comprises an electromagnetic device and a thrust assembly, wherein the electromagnetic devices are arranged on the support base, the thrust assembly is magnetically connected to the electromagnetic device, the tail end of the pencil is placed on the thrust assembly, and the thrust assembly has a first state in which the tail end of the pencil is adjusted in conjunction with the electromagnetic device so that the lead of the pencil is kept in contact with the test surface, and a second state in which the tail end of the pencil is lifted up so that the lead of the pencil is pressed down and broken.

[0010] Preferably, the support base comprises a bottom plate and a mounting plate, the bottom plate is fixedly connected to the mounting plate, and the angle between the mounting plate and the bottom plate is 30°.

[0011] The clamping mechanism is arranged on the bottom plate, and the electromagnet mechanism is arranged on the mounting plate.

[0012] Preferably, the support base further comprises a support plate, and the support plate is fixedly connected to an end of the bottom plate away from the mounting plate;

[0013] The support plate and the mounting plate form an L-shaped structure.

[0014] Preferably, the clamping mechanism comprises an adapter frame and a clamping portion, the clamping portion is fixedly connected to the adapter frame, and the pencil clamp is arranged on the clamping portion.

[0015] The bottom plate is provided with at least two fixing ears, and the adapter frame is hinged to the fixing ears.

[0016] Preferably, in the first state, an angle between a side surface of the adapter frame facing away from the pencil and the bottom plate is 30°.

[0017] Preferably, the thrust assembly includes a push rod, a receiving seat, a reset member, a magnetic block and a support frame.

[0018] The support frame is provided with a through hole, the support frame is fixedly arranged on the mounting plate, and the support frame cover is arranged above the electromagnetic device.

[0019] The push rod is movably connected to the through hole, the magnetic block is fixedly connected to one end of the push rod facing the electromagnetic device, and the receiving seat is fixedly connected to one end of the push rod facing away from the magnetic block.

[0020] The reset piece is sleeved on the push rod and is located between the receiving seat and the mounting plate, and the pen tail end is placed on the receiving seat.

[0021] Preferably, the receiving seat comprises an annular portion and a U-shaped portion, and both the annular portion and the U-shaped portion are arranged on the push rod.

[0022] The tail end of the pen is placed on the U-shaped portion.

[0023] One side of the annular portion is fixedly abutted against the reset member, and the other side of the annular portion is fixedly abutted against the U-shaped portion.

[0024] Preferably, the return member comprises a spring.

[0025] Preferably, the mounting plate is provided with a connecting hole corresponding to the position of the electromagnetic device.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] The electromagnet-controlled automatic lead-breaking device provided in the above technical solution hinges the clamping mechanism for clamping the pencil with the support base, the electromagnetic device is fixedly connected to the support base, and the thrust assembly is magnetically connected to the electromagnetic device, which is used to place the tail end of the pencil; then the thrust assembly has a first state in which the tail end of the pencil is adjusted in conjunction with the electromagnetic device so that the lead of the pencil remains in contact with the test surface, and a second state in which the tail end of the pencil is lifted up so that the lead of the pencil is pressed down and broken; on the one hand, it can better automatically provide acoustic emission simulation signals for acoustic emission non-destructive testing experiments, avoid the influence and interference of manual lead breaking on the lead breaking signal, and at the same time make up for the time synchronization problem of multiple acoustic emission signal sources; in addition, the device also has the characteristics of simple structure, easy processing and manufacturing, flexible operation, etc., and is easy to promote and apply in the field of acoustic emission non-destructive testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The present invention is a schematic diagram of the overall structure of an automatic lead breaking device provided in one embodiment of the present invention.

[0030] Figure 2 for Figure 1 Schematic diagram of the supporting bottom structure shown.

[0031] Figure 3 for Figure 1 Schematic diagram of the clamping mechanism shown.

[0032] Figure 4 for Figure 1 Schematic diagram of the thrust assembly structure shown.

[0033] Figure 5 for Figure 1 Schematic diagram of the support frame structure shown.

[0034] Description of reference numerals:

[0035] 1. Support base; 11. Bottom plate; 111. Fixing ear; 112. First hinge hole; 12. Mounting plate; 13. Support plate; 121. Connecting hole; 2. Clamping mechanism; 21. Adapter frame; 211. Second hinge hole; 22. Clamping portion; 221. Opening; 222. Extension plate; 223. Fastening hole; 3. Electromagnetic mechanism; 31. Electromagnetic device; 32. Resetting member; 33. Support frame; 331. Through hole; 34. Push rod; 35. Socket; 351. Ring portion; 352. U-shaped portion; 36. Magnetic block; 4. Pencil; 41. Pen core; 42. Pen tail end. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The utility model provides an automatic lead-breaking device controlled by an electromagnet. Figure 1As shown, it includes: a support base 1, which is used to carry and install a clamping mechanism 2 and an electromagnet mechanism 3, the clamping mechanism 2 is used to clamp a pencil 4 for testing and is hinged to one end of the support base 1, the electromagnet mechanism 3 is used to assist the pencil 4 in performing acoustic emission testing and execute the lead breaking action, and the electromagnet mechanism 3 includes an electromagnetic device 31 and a thrust assembly, wherein the electromagnetic device 31 is fixedly arranged on the support base 1, and the thrust assembly is magnetically connected to the electromagnetic device 31; specifically, the pencil 4 has a lead 41 and a tail end 42, the pencil 4 is clamped on the clamping mechanism 2, and the tail end 42 of the pencil 4 is placed on the thrust assembly; based on the magnetic connection relationship between the thrust assembly and the electromagnetic device 31, the thrust assembly has a first state in which the lead 41 of the pencil 4 is adjusted in conjunction with the electromagnetic device 31 to keep in contact with the test surface of the component under test, and has a second state in which the tail end 42 is lifted up to press the lead 41 downward and break it.

[0040] Based on the acoustic emission test standard, HB pencil 4 cores of 0.5 mm in diameter are used, and the core 41 is extended by about 2.5 mm; that is, before the test, the automatic lead-breaking device is first fixed as a whole on the test surface of the component to be tested, and then the pencil 4 having HB pencil 4 cores of 0.5 mm in diameter is clamped on the clamping mechanism 2, and the core 41 of the pencil 4 is extended by about 2.5 mm, and the tail end 42 of the pencil 4 clamped on the clamping mechanism 2 is adjusted by the thrust assembly in cooperation with the electromagnetic device 31, so that the core 41 of the pencil 4 maintains the first state of contact with the test surface of the component to be tested; during the test, the thrust assembly cooperates with the electromagnetic device 31, so that the thrust assembly can lift the tail end 42 of the pencil 4 together, and based on the hinged relationship between the clamping mechanism and the support bottom, the core 41 of the pencil 4 is pressed downward toward the test surface, so that the core 41 of the pencil 4 is broken, and the simulated acoustic emission signal required for the experiment is obtained.

[0041] The clamping mechanism for clamping the pencil 4 is hinged to the support base 1, the electromagnetic device 31 is fixedly connected to the support base 1, and the thrust assembly is magnetically connected to the electromagnetic device 31 to place the tail end 42 of the pencil 4; then the thrust assembly has a first state in which the tail end 42 is adjusted in conjunction with the electromagnetic device 31 so that the lead 41 of the pencil 4 remains in contact with the test surface, and a second state in which the tail end 42 is lifted up so that the lead 41 of the pencil 4 is pressed down and broken; on the one hand, it can better automatically provide acoustic emission simulation signals for acoustic emission non-destructive testing experiments, avoid the influence and interference of manual lead breaking on the lead breaking signal, and at the same time make up for the time synchronization problem of multiple acoustic emission signal sources; in addition, the device also has the characteristics of simple structure, easy processing and manufacturing, flexible operation, etc., and is easy to be promoted and applied in the field of acoustic emission non-destructive testing.

[0042] like Figure 2As shown, the support base 1 includes a bottom plate 11 and a mounting plate 12. In order to facilitate the processing of the device and reduce the manufacturing cost of the device, the bottom plate 11 and the mounting plate 12 are integrally formed. In addition, considering that the test standard of the acoustic emission signal is that the contact angle between the lead 41 of the pencil 4 and the test surface of the component to be tested is 30°, the angle between the mounting plate 12 and the bottom plate 11 is set to 30°, so that the lead 41 of the pencil 4 maintains an angle of 30° with the test surface of the component to be tested before the acoustic emission test. Specifically, the clamping mechanism 2 is arranged on the bottom plate 11, and the electromagnet mechanism 3 is arranged on the mounting plate 12.

[0043] Furthermore, in order to ensure the stability of the device during the test, the support base 1 also has a support plate 13, and the support plate 13 is fixedly connected to one end of the base plate 11 away from the mounting plate 12, and one end of the support plate 13 away from the mounting plate 12 is fixedly abutted against the component to be tested, so that the device can form a stable support when it is placed on the test surface of the component to be tested for testing; preferably, in order to further improve the stability of the support, the support plate 13 and the mounting plate 12 form an L-shaped structure; then when the device is photographed on the surface of the component to be tested, the support plate 13, the mounting plate 12 and the surface of the component to be tested are arranged to form a triangular structure.

[0044] like Figure 3 As shown, in order to facilitate the fixing of the pencil 4 on the device during the test, the clamping mechanism 2 includes an adapter frame 21 and a clamping portion 22, the clamping portion 22 is fixedly connected to the adapter frame 21, and the lead 41 of the pencil 4 is clamped on the clamping portion 22; specifically, the clamping portion 22 is a sleeve structure, and in order to make the clamping portion 22 applicable to pencils 4 with HB pencil leads of 0.5 mm in different shapes, an opening 221 is provided on the side wall of the clamping portion 22; correspondingly, in order to facilitate the clamping and fixing of the clamped pencil 4, Extension plates 222 are provided on both sides of the opening 221, and fastening holes 223 are symmetrically provided on the extension plates 222. When the lead 41 of the pencil 4 is placed in the sleeve structure, the size of the opening 221 can be adjusted and controlled by the cooperation of the fasteners and the fastening holes 223, thereby adjusting the tightness of the pencil 4 clamping. Usually, the clamping part 22 and the adapter frame 21 are integrally formed, which can save processing and manufacturing costs on the one hand, and increase the stability of the pencil 4 clamping on the other hand.

[0045] Furthermore, at least two fixing ears 111 are provided on the bottom plate 11, and the adapter frame 21 is hinged to the fixing ears 111; specifically, first hinge holes 112 are respectively provided on the two fixing ears 111, and the two first hinge holes 112 are symmetrically arranged, and a second hinge hole 211 is provided on the adapter frame 21 at a position corresponding to the first hinge hole 112, and then the first hinge hole 112 is connected to the second hinge hole 211 through a rotating shaft; so that during testing, the adapter frame 21 can rotate relative to the bottom plate 11 with the pencil 4 clamped on the clamping portion 22.

[0046] In addition, in order to ensure that the state of the pencil 4 can reach and maintain the test standard during the test, in the first state, the side surface of the adapter 21 facing away from the pencil 4 and the bottom plate 11 are set at an angle of 30°; thereby optimizing the preparation work before the acoustic emission test and greatly improving the test efficiency of the acoustic emission.

[0047] like Figure 1 and Figure 5 As shown, the thrust assembly includes a push rod 34, a receiving seat 35, a reset member 32, a magnetic block 36 and a support frame 33; wherein the support frame 33 is covered above the electromagnetic device 31, and the support frame 33 is provided with a through hole 331, the push rod 34 is movably connected to the through hole 331, the magnetic block 36 is fixedly connected to one end of the push rod 34 facing the electromagnetic device 31, and the receiving seat 35 is fixedly connected to one end of the push rod 34 facing away from the magnetic block 36. Specifically, the reset member 32 is sleeved on the push rod 34, and the reset member 32 is located between the receiving seat 35 and the mounting plate 12, and the tail end 42 of the pencil 4 is placed on the receiving seat 35.

[0048] When the electromagnetic device 31 is powered on, the magnetic block 36 is attracted to the electromagnetic device 31, and the magnetic block 36, together with the push rod 34 and the receiving seat 35 disposed on the push rod 34, moves toward the direction of the electromagnetic device 31. During the movement of the push rod 34, the reset member 32 located between the receiving seat 35 and the mounting plate 12 is squeezed and contracted, and the angle between the lead 41 of the pencil 4 and the bottom plate 11 can be adjusted and maintained at 30°, and the lead 41 contacts the test surface of the component to be tested; when the electromagnetic device 31 is powered off, When the magnetic block 36 is not attracted to the electromagnetic device 31, the reset member 32 will be extended, and under the action of the reset member 32, the push rod 34 and the receiving seat 35 will move in the opposite direction of the electromagnetic device 31, and then the tail end 42 of the pencil 4 will be lifted up; at this time, the lead 41 of the pencil 4 will be pressed down toward the test surface of the component to be tested, and the lead 41 will be broken during the pressing process, and then the simulated acoustic emission signal required for the experiment will be obtained; preferably, the reset member 32 includes a spring.

[0049] Specifically, the receiving seat 35 includes an annular portion 351 and a U-shaped portion 352. The annular portion 351 and the U-shaped portion 352 are both arranged on the push rod 34. In order to improve the stability of the placement of the tail end 42 of the pencil 4, the tail end 42 is placed on the U-shaped portion 352, and one side of the annular portion 351 is fixedly abutted against the reset member 32, and the other side is fixedly abutted against the U-shaped portion 352.

[0050] Preferably, in order to facilitate the electromagnetic device 31 to obtain power, a connection hole 121 is provided at a position of the mounting plate 12 corresponding to the electromagnetic device 31 , and then the wiring harness for supplying power to the electromagnetic device 31 can pass through the connection hole 121 and be connected to the electromagnetic device 31 .

[0051] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An automatic lead-breaking device controlled by an electromagnet, characterized in that: include: Support base, The clamping mechanism is hinged to the support base and is used to clamp the pencil. The electromagnet mechanism comprises an electromagnetic device and a thrust assembly, wherein the electromagnetic devices are arranged on the support base, the thrust assembly is magnetically connected to the electromagnetic device, the tail end of the pencil is placed on the thrust assembly, and the thrust assembly has a first state in which the tail end of the pencil is adjusted in conjunction with the electromagnetic device so that the lead of the pencil is kept in contact with the test surface, and a second state in which the tail end of the pencil is lifted up so that the lead of the pencil is pressed down and broken.

2. The automatic lead breaking device according to claim 1, characterized in that: The support base includes a bottom plate and a mounting plate, the bottom plate is fixedly connected to the mounting plate, and the angle between the mounting plate and the bottom plate is 30°. The clamping mechanism is arranged on the bottom plate, and the electromagnet mechanism is arranged on the mounting plate.

3. The automatic lead breaking device according to claim 2, characterized in that: The support base also includes a support plate, and the support plate is fixedly connected to an end of the bottom plate away from the mounting plate; The support plate and the mounting plate form an L-shaped structure.

4. The automatic lead breaking device according to claim 2, characterized in that: The clamping mechanism comprises an adapter frame and a clamping part, wherein the clamping part is fixedly connected to the adapter frame, and the pencil clamp is arranged on the clamping part. The bottom plate is provided with at least two fixing ears, and the adapter frame is hinged to the fixing ears.

5. The automatic lead breaking device according to claim 4, characterized in that: In the first state, an angle between a side surface of the adapter frame facing away from the pencil and the bottom plate is 30°.

6. The automatic lead breaking device according to claim 2, characterized in that: The thrust assembly includes a push rod, a receiving seat, a reset member, a magnetic block and a support frame. The support frame is provided with a through hole, the support frame is fixedly arranged on the mounting plate, and the support frame cover is arranged above the electromagnetic device. The push rod is movably connected to the through hole, the magnetic block is fixedly connected to one end of the push rod facing the electromagnetic device, and the receiving seat is fixedly connected to one end of the push rod facing away from the magnetic block. The reset piece is sleeved on the push rod and is located between the receiving seat and the mounting plate, and the pen tail end is placed on the receiving seat.

7. The automatic lead breaking device according to claim 6, characterized in that: The receiving seat comprises an annular portion and a U-shaped portion, and both the annular portion and the U-shaped portion are arranged on the push rod. The tail end of the pen is placed on the U-shaped portion. One side of the annular portion is fixedly abutted against the reset member, and the other side of the annular portion is fixedly abutted against the U-shaped portion.

8. The automatic lead breaking device according to claim 6, characterized in that: The return member comprises a spring.

9. The automatic lead breaking device according to claim 2, characterized in that: The mounting plate is provided with a connection hole corresponding to the position of the electromagnetic device.

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