Metal material fatigue detector

Abstract

The utility model is suitable for the field of metal detection, and provides a metal material fatigue detector which comprises a rack, a detection unit and a heat dissipation unit, the sample rod can be fixed to the two ends of the driving rod and the measuring rod through the arranged fixing unit, the sample rod is circularly loaded through the driving rod in cooperation with the arranged motor, stress data are obtained through the measuring rod, a material S-N curve is obtained, the interior of the heat dissipation box can be refrigerated through the arranged refrigeration piece, water is sprayed to the surface of the sample rod through the spray head, and the material S-N curve is obtained. The heat conduction efficiency is improved, the fan is arranged in a matched mode, air flow in the heat dissipation box is increased, the heat dissipation effect is further improved, in addition, the heat dissipation box is matched with the heat preservation layer and the box cover, heat preservation can be conducted, and the arranged refrigeration piece can be controlled to conduct refrigeration so as to detect the fatigue properties of metal materials at different temperatures.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metal detection field especially relates to a metal material fatigue detector. BACKGROUND

[0002] Metal fatigue refers to the phenomenon that metal materials gradually develop and eventually break after experiencing multiple stress cycles under cyclic loading. Metal fatigue detection is an important means to predict and prevent sudden failure of metal materials under such loading conditions, which can effectively prolong the service life of materials and structures, ensure product quality and safety, and promote scientific research and engineering innovation.

[0003] Current metal material fatigue detectors usually use strain measurement method for testing, which involves cyclic loading of standard sample rods until they break, and then obtaining the stress value before breaking. However, during this process, the sample rods usually generate heat, and the change in temperature directly affects the mechanical properties and microstructure of the material. This often leads to large errors in fatigue test results. SUMMARY

[0004] The purpose of the utility model embodiment is to provide a metal material fatigue detector to solve the problems raised in the background art.

[0005] The utility model embodiment is implemented as follows: a metal material fatigue detector includes a rack, and further includes:

[0006] A detection unit includes a motor fixedly arranged in the rack for driving, a motor spindle connected with a crank through a bevel gear set, the crank fixedly connected with one end of a connecting rod, the connecting rod fixedly connected with one end of a driving rod, a measuring rod fixedly arranged on the opposite side of the driving rod at the upper end of the rack, a spring body arranged in the middle of the driving rod for buffering, a fixed unit for mounting a sample rod arranged at one end of the driving rod and the measuring rod, the fixed unit including a connecting seat fixedly arranged at one end of the driving rod and the measuring rod, a limiting column fixedly arranged at one end of the connecting seat, two groups of fixed plates movably arranged at one end of the connecting seat, a limiting hole with the same outer diameter as the limiting column fixedly arranged at the position corresponding to the limiting column on the side surface of the fixed plate, a fixed sleeve arranged outside the connecting seat and the fixed plate, a screw thread fixedly arranged on the inner side of the fixed sleeve, and an external screw thread fixedly arranged on the outer side of the connecting seat and matched with the screw thread in the fixed sleeve.

[0007] The heat dissipation unit comprises a heat dissipation box fixedly arranged in the middle of the upper end of the rack, an inner wall of the heat dissipation box is provided with a heat preservation layer, one side of the heat dissipation box is provided with a box cover, the heat dissipation unit further comprises a refrigeration fin fixedly arranged on the side wall of the heat dissipation box, a cold end of the refrigeration fin is located on the inner side of the heat dissipation box, a hot end of the refrigeration fin is located on the outer side of the heat dissipation box, a plurality of groups of heat pipes for heat conduction are fixedly arranged at both ends of the refrigeration fin, a plurality of groups of heat dissipation fins are arranged on the outer sides of the heat pipes, a spray head is fixedly arranged on the middle of the top inner side of the connecting seat, a fan is fixedly arranged on the middle of the inner side of the connecting seat, a supporting column for supporting is fixedly arranged below the fan, and the lower end of the supporting column is fixedly arranged on the bottom inner side of the connecting seat.

[0008] As a further scheme of the utility model, the driving rod and the measuring rod are both extended to the inside of the heat dissipation box, the other end of the measuring rod is connected with the measuring system, and the fixing unit is located in the inside of the heat dissipation box.

[0009] As a further scheme of the utility model, the connecting seat is of a hollow structure, the limiting column is of a cylindrical shape, and the limiting hole is of a semicircular hole with an inner diameter matched with the outer diameter of the limiting column.

[0010] As a further scheme of the utility model, the part of the fixing plate located on the outside of the connecting seat is of a semicircular plate, and the part of the fixing plate located on the inside of the connecting seat is of a semicircular ring with an outer diameter matched with the inner diameter of the inner cavity of the connecting seat.

[0011] As a further scheme of the utility model, the heat dissipation box is of a box structure, the heat pipe is of a hollow copper pipe, the heat pipe is filled with heat conduction liquid, and the heat dissipation fins are arrayed metal thin plates.

[0012] The metal material fatigue detector provided by the utility model can fix the sample rod on the two ends of the driving rod and the measuring rod through the fixing unit, and then the motor is used to cyclically load the sample rod through the driving rod, and the stress data is obtained through the measuring rod to obtain the material S-N curve. The heat dissipation box can be cooled through the refrigeration fin, and the sample rod surface is sprayed with water through the spray head to improve the heat conduction efficiency. In addition, the heat dissipation box can be used in combination with the heat preservation layer and the box cover to perform heat preservation, and the refrigeration fin can be used to detect the fatigue properties of the metal material at different temperatures. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides a kind of metal material fatigue detector of stereoscopic structure for the embodiment of the utility model;

[0014] Figure 2The cross section of the metal material fatigue detector provided by the embodiment of the utility model Figure One ;

[0015] Figure 3 For Figure 2 The enlarged schematic view of A in the middle part

[0016] Figure 4 The cross section of the metal material fatigue detector provided by the embodiment of the utility model Figure Two .

[0017] In the drawings: rack 1, detection unit 2, motor 3, crank 4, connecting rod 5, drive rod 6, measuring rod 7, spring body 8, fixed unit 9, connecting seat 10, limiting column 101, fixed plate 11, limiting hole 111, fixed sleeve 12, heat dissipation unit 13, heat dissipation box 14, thermal insulation layer 15, box cover 16, refrigeration sheet 17, heat pipe 18, heat dissipation fin 19, spray head 20, fan 21, support column 22. Specific implementation

[0018] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0019] The specific implementation of the utility model is described in detail below by combining with specific embodiments.

[0020] As Figures 1 to 4 shown, the metal material fatigue detector provided by the embodiment of the utility model comprises a rack 1, and the rack 1 further comprises:

[0021] The detection unit 2 comprises a motor 3 fixedly arranged in the rack 1 for driving, the main shaft of the motor 3 is connected with a crank 4 through a bevel gear set, one end of the crank 4 is fixedly connected with a connecting rod 5, one end of the connecting rod 5 is fixedly connected with a driving rod 6, a measuring rod 7 is fixedly arranged on the upper end of the rack 1 on the opposite side of the driving rod 6, a spring body 8 for buffering is arranged in the middle of the driving rod 6, a fixing unit 9 for installing a sample rod is arranged at one end of the driving rod 6 and the measuring rod 7, the fixing unit 9 comprises a connecting seat 10 fixedly arranged at one end of the driving rod 6 and the measuring rod 7, a limiting column 101 is fixedly arranged at one end of the connecting seat 10, two groups of fixed plates 11 are movably arranged at one end of the connecting seat 10, limiting holes 111 with the same outer diameter as the limiting column 101 are fixedly arranged on the side of the fixed plates 11 corresponding to the position of the limiting column 101, a fixed sleeve 12 is arranged on the outer side of the connecting seat 10 and the fixed plate 11, a screw thread is fixedly arranged in the inner side of the fixed sleeve 12, and an outer screw thread matched with the inner screw thread of the fixed sleeve 12 is fixedly arranged on the outer side of the connecting seat 10;

[0022] The heat dissipation unit 13 comprises a heat dissipation box 14 fixedly arranged in the middle of the upper end of the rack 1, a heat preservation layer 15 is arranged on the inner wall of the heat dissipation box 14, a box cover 16 is arranged on one side of the heat dissipation box 14, the heat dissipation unit 13 further comprises a refrigeration fin 17 fixedly arranged on the side wall of the heat dissipation box 14, the cold end of the refrigeration fin 17 is located on the inner side of the heat dissipation box 14, the hot end of the refrigeration fin 17 is located on the outer side of the heat dissipation box 14, a plurality of heat pipes 18 for heat conduction are fixedly arranged at two ends of the refrigeration fin 17, a plurality of heat dissipation fins 19 are arranged on the outer side of the heat pipes 18, a spray head 20 is fixedly arranged in the middle of the top surface of the inner side of the connecting seat 10, a fan 21 is fixedly arranged in the middle of the inner side of the connecting seat 10, a supporting column 22 for supporting is fixedly arranged below the fan 21, and the lower end of the supporting column 22 is fixedly arranged on the bottom surface of the inner side of the connecting seat 10.

[0023] In one embodiment of the utility model, through the fixed unit 9, the sample rod can be fixed at two ends of the driving rod 6 and the measuring rod 7, then the motor 3 drives the sample rod through the driving rod 6, the stress data are obtained through the measuring rod 7, the S-N curve of the material is obtained, through the refrigeration fin 17, the heat dissipation box 14 can be refrigerated, then the water is sprayed on the surface of the sample rod through the spray head 20, the heat conduction efficiency is improved, the air flow in the heat dissipation box 14 is increased through the fan 21, the heat dissipation effect is further improved, in addition, through the heat dissipation box 14, the heat preservation layer 15 and the box cover 16, heat preservation can be realized, and the refrigeration of the refrigeration fin 17 can be controlled to detect the fatigue properties of the metal material under different temperatures.

[0024] In one example of the utility model, in use, through the connecting seat 10 and the fixed plate 11 set up, the sample rod both ends are clamped in the connecting seat 10, cooperate the fixed sleeve 12 set up, the sample rod is fixed, adjusts the stress value and frequency, opens the motor 3 and drives the crank 4 rotation, the crank 4 of rotation drives the driving rod 6 movement through the connecting rod 5, opens the shower nozzle 20 and sprays water cooling to the sample rod surface, opens the fan 21 again and increases the convection speed, improves the heat dissipation effect, according to need, opens the refrigeration fin 17 and carries out refrigeration in the heat dissipation box 14, and through the heat pipe 18 and the heat dissipation fin 19 set up, improves the heat dissipation effect.

[0025] As Figure 2 Indicated, as a preferred embodiment of the utility model, the driving rod 6 and the measuring rod 7 one end all extend to the heat dissipation box 14 inside and extend to the heat dissipation box 14 inside, the measuring rod 7 other end is connected with the measuring system, and the fixed unit 9 is located in the heat dissipation box 14 inside.

[0026] In one example of the utility model, by placing the sample rod in the closed space heat dissipation box 14, reduce the influence of the sample rod outside, improve the accuracy of detection, also reduce the refrigeration area of the refrigeration fin 17, and then reduce the energy loss of heat dissipation and refrigeration.

[0027] As Figure 3 Indicated, as a preferred embodiment of the utility model, the connecting seat 10 is hollow structure, the limiting post 101 is set as cylinder, and the limiting hole 111 is set as semicircular hole with inner diameter being matched with the outer diameter of the limiting post 101.

[0028] Further, the fixed plate 11 is set as semicircular plate on the outside part of the connecting seat 10, and the fixed plate 11 is set as semicircular ring with outer diameter being matched with the inner diameter of the cavity of the connecting seat 10 on the inside part of the connecting seat 10.

[0029] In one example of the utility model, through the connecting seat 10 and the fixed plate 11 set up, the sample rod is clamped in the connecting seat 10, and then through the limiting post 101 and the limiting hole 111 cooperation, the limiting of the fixed plate 11 is facilitated.

[0030] As Figure 4 Indicated, as a preferred embodiment of the utility model, the heat dissipation box 14 is set as box type structure, the heat pipe 18 is set as hollow copper pipe, the heat pipe 18 is filled with heat conducting liquid, and the heat dissipation fin 19 is arrayed metal sheet.

[0031] In one example of the utility model, through the heat pipe 18 cooperation inside filling heat conducting liquid, the temperature conduction effect is improved, and then through the heat dissipation of the heat dissipation fin 19, the refrigeration in the heat dissipation box 14 and the heat dissipation of the refrigeration fin 17 are facilitated.

[0032] It is apparent that a person skilled in the art can, without departing from the scope of the application, make many modifications to the details of the exemplary embodiments described above and that such modifications would be encompassed by the scope of the application. Accordingly, the application is to be considered as limited only by the scope of the appended claims, and it is intended to cover any and all modifications within the scope of the claims. No feature of the application is to be construed as limiting the application to the exact disclosure herein, and no feature of the application is to be considered essential unless explicitly so stated in the claims.

[0033] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "a plurality of" means two or more.

[0035] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In addition, it should be understood that although the present application is described in the form of embodiments, each embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A metal material fatigue detector comprising a frame (1), characterized in that, Also includes: The detection unit (2) includes a motor (3) fixedly arranged in the rack (1) for driving, the main shaft of the motor (3) is connected with the crank (4) through the bevel gear set, one end of the crank (4) is fixedly connected with the connecting rod (5), one end of the connecting rod (5) is fixedly connected with the driving rod (6), the upper end of the rack (1) is fixedly arranged with the measuring rod (7) on the opposite side of the driving rod (6), the middle of the driving rod (6) is provided with a spring body (8) for buffering, one end of the driving rod (6) and the measuring rod (7) is provided with a fixing unit (9) for installing the sample rod, the fixing unit (9) includes a connecting seat (10) fixedly arranged at one end of the driving rod (6) and the measuring rod (7), one end of the connecting seat (10) is fixedly provided with a limiting column (101), one end of the connecting seat (10) is movably provided with two groups of fixed plates (11), the side surface of the fixed plate (11) is fixedly provided with a limiting hole (111) with the same outer diameter as the limiting column (101) at the position corresponding to the limiting column (101), the outer side of the connecting seat (10) and the fixed plate (11) is provided with a fixed sleeve (12), the inner side of the fixed sleeve (12) is fixedly provided with a screw thread, the outer side of the connecting seat (10) is fixedly provided with an external thread matched with the internal screw thread of the fixed sleeve (12); The heat dissipation unit (13) includes a heat dissipation box (14) fixedly arranged in the middle of the upper end of the rack (1), the inner wall of the heat dissipation box (14) is provided with a heat preservation layer (15), one side of the heat dissipation box (14) is provided with a box cover (16), the heat dissipation unit (13) further includes a refrigeration fin (17) fixedly arranged on the side wall of the heat dissipation box (14), the cold end of the refrigeration fin (17) is located on the inner side of the heat dissipation box (14), the hot end of the refrigeration fin (17) is located on the outer side of the heat dissipation box (14), the two ends of the refrigeration fin (17) are fixedly provided with a plurality of heat pipes (18) for heat conduction, a plurality of heat dissipation fins (19) are arranged on the outer side of the heat pipe (18), a spray head (20) is fixedly arranged on the middle of the top surface of the inner side of the connecting seat (10), a fan (21) is fixedly arranged on the middle of the inner side of the connecting seat (10), a supporting column (22) for supporting is fixedly arranged below the fan (21), and the lower end of the supporting column (22) is fixedly arranged on the bottom surface of the inner side of the connecting seat (10).

2. The metal material fatigue detector according to claim 1, wherein The driving rod (6) and the measuring rod (7) are arranged in the heat dissipation box (14) and extend into the heat dissipation box (14), the other end of the measuring rod (7) is connected with the measuring system, and the fixing unit (9) is located in the heat dissipation box (14).

3. The metal material fatigue detector according to claim 2, wherein The connecting seat (10) is a hollow structure, the limiting column (101) is arranged in a cylindrical shape, and the limiting hole (111) is arranged in a semicircular hole with an inner diameter matched with the outer diameter of the limiting column (101).

4. The metal material fatigue detector according to claim 3, characterized in that, The fixed plate (11) is arranged in a semicircular plate on the outer side of the connecting seat (10), and the fixed plate (11) is arranged in a semicircular ring with an outer diameter matched with the inner diameter of the inner cavity of the connecting seat (10) on the inner side of the connecting seat (10).

5. The metal material fatigue detector according to claim 4, wherein The heat dissipation box (14) is arranged in a box type structure, the heat pipe (18) is arranged as a hollow copper pipe, the heat pipe (18) is filled with heat-conducting liquid, and the heat dissipation fins (19) are arrayed metal thin plates.

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