Impact test device for metal detection

Abstract

The utility model provides an impact test device for metal detection, which relates to the technical field of metal detection equipment and comprises a protective box body, a protective steel plate layer, a multi-factor environment simulation structure, an impact energy applying device, a pipeline mounting cavity, a heat conduction pipeline, a water pump, an electric heating plate, a temperature and humidity sensor, a water mist and environment gas supply pipeline and a controller, the protective box body is adopted as an external shell for mounting the impact energy applying device, a swinging hammer head is prevented from hurting people, the inner wall of the protective box body is mechanically reinforced through the protective steel plate layer, and splashing sample fragments are effectively shielded; a multi-factor environment simulation structure is assembled on the protection box body, the temperature is adjusted to be within a preset range, the humidity is controlled through the supplied water mist amount, the corrosivity of environment air is controlled through the acid-base property of supplied gas, the specific temperature, humidity or corrosion environment is comprehensively simulated, and the authenticity of the test is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal testing equipment technology, and in particular to an impact testing device for metal testing. Background Technology

[0002] The descriptions in this section provide only background information relevant to this disclosure and do not constitute prior art.

[0003] In the existing technology, the impact testing device for metal detection often adopts the pendulum impact testing machine. However, the pendulum impact testing machine has the following problems: weak environmental simulation capability, unable to carry out in-situ impact testing in specific temperature, humidity or corrosive environments; insufficient safety, with safety hazards during the pendulum release process, and sample fragments may be scattered. Utility Model Content

[0004] The purpose of this invention is to provide an impact testing device for metal testing, which has the advantages of avoiding injury from the swinging hammer, effectively shielding the sample fragments from splashing, adjusting the temperature to a predetermined range, controlling the corrosiveness of the ambient air, comprehensively simulating specific temperature, humidity or corrosive environments, and improving the authenticity of the test. It solves the technical problems of weak environmental simulation capability, inability to conduct in-situ impact testing under specific temperature, humidity or corrosive environments, insufficient safety, safety hazards during the release of the pendulum, and the possibility of sample fragments splashing.

[0005] This utility model provides an impact testing device for metal detection, comprising:

[0006] The protective enclosure has a protective steel plate layer fixedly installed inside its cavity;

[0007] The inner wall of the protective box is equipped with a multi-factor environmental simulation structure.

[0008] An impact energy application device is fixedly installed in the middle of the rear wall of the inner cavity of the protective box.

[0009] The multi-factor environmental simulation structure includes:

[0010] The pipeline installation cavity is symmetrically opened on the left and right sides of the inner wall of the protective box;

[0011] The inner cavity of the pipeline installation chamber is wrapped with a heat-conducting pipeline, the input and output ends of which extend to the outside of the protective box.

[0012] The output end of the heat-conducting pipe is fixedly connected to a water pump;

[0013] Electric heating plates are embedded in both the upper and lower sides of the inner wall of the protective box.

[0014] A temperature and humidity sensor is fixedly mounted on the top surface of the protective box, and the lower end of the temperature and humidity sensor extends through the reserved through hole of the upper heating plate to the upper end of the inner cavity of the protective box.

[0015] Water mist and ambient gas supply pipelines are mounted on the side wall of the protective enclosure;

[0016] The controller is electrically connected to the heating plate, the water pump, and the temperature and humidity sensor, respectively.

[0017] As a further optimization, in order to control the humidity inside the protective enclosure by introducing water mist, and to change the air environment inside the protective enclosure by introducing air of different compositions, the water mist and ambient gas supply pipeline includes:

[0018] An air intake pipe is fixedly connected to the upper end of the side wall of the protective housing;

[0019] The side wall of the air intake pipe is fixedly connected to a branch pipe;

[0020] An exhaust pipe is fixedly connected to the lower end of the side wall of the protective housing.

[0021] Valves are fixedly installed on the intake pipe, branch pipe and exhaust pipe.

[0022] As a further optimization, in order to provide comprehensive shielding and protection for the inner wall of the protective enclosure, the protective steel plate layer includes:

[0023] Horizontal metal strips are uniformly welded to the left and right sides, top and bottom sides, rear wall of the inner cavity, and rear wall of the door of the protective box.

[0024] A rectangular steel plate frame is welded to the left and right sides and the top and bottom sides of the inner wall of the protective box.

[0025] Steel plates are welded to the rear wall of the inner cavity of the protective box and the rear wall of the box door of the protective box.

[0026] As a further optimization, in order to clamp the metal material to be tested and facilitate impact testing, the lower end of the impact energy application device is provided with a metal clamping and fixing assembly, which is fixedly assembled in the lower end of the inner cavity of the protective box.

[0027] The metal clamping and fixing assembly is located directly below the impact energy application device.

[0028] As a further optimization, in order to clamp the metal material to be tested and facilitate impact testing, the metal clamping and fixing assembly includes:

[0029] The base plate is welded to the lower end of the inner cavity of the protective box at its rear end;

[0030] Vertical plates are fixedly fitted to the left and right edges of the top surface of the base plate;

[0031] Both the left and right vertical plates are screwed with screw rods in the middle, and hand-tightening round caps are fixedly connected to their outer ends;

[0032] The screw is rotatably fitted with a clamping plate on its inner side, and its lower end is slidably attached to the top surface of the base plate.

[0033] As a further optimization, to provide impact force by driving the bar rod to rotate via a power-off self-locking motor, which locks itself in place during power failure to ensure safety, the impact speed and energy are precisely controlled by an encoder. This method offers more precise energy control and extremely high repeatability. The impact energy application device includes:

[0034] A power-off self-locking motor is fixedly assembled in the middle of the rear wall of the inner cavity of the protective box.

[0035] The front shaft of the power-off self-locking motor is fixedly connected to an encoder, which is electrically connected to an external controller.

[0036] A circular plate with a circular window in its center;

[0037] A support rod is fixedly fitted between the rear edge of the circular plate and the rear wall of the inner cavity of the protective box.

[0038] A bar-shaped rod has a connecting through hole in the middle of its front wall, and a slot is formed on the inner wall of the connecting through hole along its length.

[0039] A connecting rod passes through the connecting through hole, and its outer wall is integrally formed with a strip-shaped protrusion that is inserted into the slot along the length direction.

[0040] The rear end of the connecting rod passes through the circular window of the circular plate and is inserted into the groove of the front end shaft of the encoder.

[0041] The outer wall of the encoder front shaft is fixedly connected to the outer wall of the connecting rod rear end by bolts.

[0042] The front end of the connecting rod is fixed with a round cap, and its rear end abuts against the front wall of the strip rod.

[0043] The lower end of the bar is equipped with a detachable hammer.

[0044] As a further optimization, in order to change the height of the strip rod and the lower end of the detachable hammer by replacing the connecting rod and installing it in the connecting through holes at different heights, the lower end of the front wall of the strip rod is provided with connecting through holes, and there are at least two connecting through holes distributed longitudinally.

[0045] As a further optimization, to facilitate the replacement of the hammerhead body, the detachable hammerhead includes:

[0046] A connecting slot is provided on the bottom surface of the strip;

[0047] A rod is inserted into the connecting slot, and a hammer head body is fixedly assembled at its lower end.

[0048] The insertion rod and the connecting slot are perforated by fixing bolts on the front and rear side walls, and fixing nuts are screwed to the ends of the fixing bolts.

[0049] There are two sets of fixing bolts and fixing nuts.

[0050] As a further optimization, in order to impact the metal material to be tested with a rectangular hammer with rounded corners, both ends of the hammer head body are rectangular hammer surfaces with rounded corners.

[0051] As a further optimization, in order to achieve different impact effects by impacting the metal material to be tested with a rectangular hammer with rounded corners and a pointed hammer with rounded corners, one end of the hammer head body is a rectangular hammer with rounded corners, and the other end of the hammer head body is a pointed hammer with rounded corners.

[0052] This utility model provides an improved impact testing device for metal detection, which has the following improvements and advantages compared with the prior art:

[0053] A protective enclosure is used as the external shell for the impact energy application device. The impact test of metallic materials is carried out inside the protective enclosure to prevent injury from the swinging hammer. The inner wall of the protective enclosure is mechanically reinforced with a protective steel plate layer to effectively shield the flying sample fragments. A multi-factor environmental simulation structure is installed on the protective enclosure. Temperature and humidity sensors detect the temperature and humidity inside the protective enclosure. The controller controls the operation of the water pump and electric heating plate according to the detection data. The water pump pumps cold water into the heat conduction pipe, and the electric heating plate heats the sample. The temperature is adjusted to a predetermined range. Water mist and ambient gas are supplied into the protective enclosure through water mist and ambient gas supply pipes. The humidity is controlled by the amount of water mist supplied, and the corrosiveness of the ambient air is controlled by the acidity or alkalinity of the supplied gas. This comprehensively simulates specific temperature, humidity, or corrosive environments, improving the realism of the test. Attached Figure Description

[0054] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0055] Figure 1 This is a schematic diagram of the structure of this utility model;

[0056] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0057] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0058] Figure 4 This is a schematic diagram of the impact energy application device of this utility model;

[0059] Figure 5 This is a schematic diagram of the structure of the hammer head body of this utility model in one embodiment;

[0060] Figure 6 This is a schematic diagram of the hammer head body of the present invention, according to embodiment two.

[0061] Explanation of reference numerals in the attached figures:

[0062] 1-Protective housing, 2-Multi-factor environmental simulation structure, 21-Heating plate, 22-Pipeline mounting cavity, 23-Temperature and humidity sensor, 24-Water mist and ambient gas supply pipeline, 241-Exhaust pipe, 242-Branch pipe, 243-Inlet pipe, 244-Valve, 25-Controller, 26-Heat conduction pipeline, 3-Metal clamping and fixing assembly, 31-Base plate, 32-Vertical plate, 33-Screw, 34-Clamping plate, 4-Impact energy application device, 41-Circular plate, 42-Power-off self-locking motor, 43-Connecting through hole, 44-Strip rod, 45-Connecting rod, 46-Easy-to-disassemble hammer head, 461-Connecting slot, 462-Insertion rod, 463-Fixing bolt, 464-Fixing nut, 465-Hammer head body, 47-Encoder, 5-Protective steel plate layer, 51-Rectangular steel plate frame, 52-Horizontal metal strip, 53-Steel plate. Detailed Implementation

[0063] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0064] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0065] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0066] Please see Figures 1-6 This utility model provides a technical solution: an impact testing device for metal detection, comprising:

[0067] The protective enclosure 1 has a protective steel plate layer 5 fixedly installed in its inner cavity;

[0068] The inner wall of the protective enclosure 1 is fitted with a multi-factor environmental simulation structure 2;

[0069] An impact energy application device 4 is fixedly installed in the middle of the rear wall of the inner cavity of the protective box 1;

[0070] Multi-factor environmental simulation structure 2 includes:

[0071] Pipeline installation cavity 22 is symmetrically opened on the left and right sides of the inner wall of the protective box 1;

[0072] A heat-conducting pipe 26 is coiled inside the pipe installation cavity 22, with its input and output ends extending to the outside of the protective box 1.

[0073] A water pump is fixedly connected to the output end of the heat conduction pipe 26;

[0074] Electric heating plates 21 are embedded in the upper and lower sides of the inner wall of the protective box 1;

[0075] Temperature and humidity sensor 23 is fixedly mounted on the top surface of protective box 1, and the lower end of temperature and humidity sensor 23 extends through the reserved through hole of upper heating plate 21 to the upper end of the inner cavity of protective box 1.

[0076] Water mist and ambient gas supply pipeline 24 is mounted on the side wall of the protective enclosure 1;

[0077] The controller 25 is electrically connected to the heating plate 21, the water pump, and the temperature and humidity sensor 23.

[0078] Specifically, in this embodiment, the protective box 1 is made of stainless steel and has a hinged door. A door lock is provided between the door and the opening of the protective box 1, and a handle is fixed on the non-hinged side of the front wall of the door.

[0079] Furthermore, the protective housing 1 is used as the outer shell for the impact energy application device 4. The impact test of the metal material is carried out inside the protective housing 1 to avoid injury from the swinging hammer. The inner wall of the protective housing 1 is mechanically reinforced by the protective steel plate layer 5 to effectively shield the flying sample fragments.

[0080] More specifically, a multi-factor environment simulation structure 2 is installed on the protective chamber 1. The temperature and humidity inside the protective chamber 1 are detected by the temperature and humidity sensor 23. The controller 25 controls the operation of the water pump and the electric heating plate 21 according to the detection data. The water pump pumps cold water into the heat conduction pipe 26, and the electric heating plate 21 heats the water. The temperature is adjusted to a predetermined range. Water mist and ambient gas are supplied into the protective chamber 1 through the water mist and ambient gas supply pipe 24. The humidity is controlled by the amount of water mist supplied, and the corrosiveness of the ambient air inside the protective chamber 1 is controlled by the acidity or alkalinity of the supplied gas. This comprehensively simulates a specific temperature, humidity or corrosive environment and improves the realism of the test.

[0081] Understandably, the water mist and ambient gas supply pipeline 24 is equipped with an inlet and an outlet for replacing the original air inside the protective chamber 1 and controlling the amount of water mist or ambient gas entering. Water mist and ambient gas can coexist in the protective chamber 1. During operation, water mist and ambient gas are introduced simultaneously for humidity adjustment. After adjusting to a suitable humidity, the outlet and inlet are sealed. Corrosivity is adjusted by the different acidity and alkalinity of the introduced gas, and a pH value monitor is extended to the inside of the protective chamber 1 for detection.

[0082] The protective enclosure 1 has a sealing strip at the door to maintain airtightness after being fastened. The outer wall of the protective enclosure 1 is equipped with sealing rings at the connection gaps with pipes and devices to prevent gas leakage.

[0083] In some embodiments, the water mist and ambient gas supply line 24 includes:

[0084] The air intake pipe 243 is fixedly connected to the upper end of the side wall of the protective housing 1;

[0085] A branch pipe 242 is fixedly connected to the side wall of the air intake pipe 243;

[0086] The exhaust pipe 241 is fixedly connected to the lower end of the side wall of the protective housing 1;

[0087] Valves 244 are fixedly installed on the intake pipe 243, branch pipe 242 and exhaust pipe 241.

[0088] Specifically in this embodiment, the air intake pipe 243 is used to supply air containing water mist, the branch pipe 242 is used to supply acidic or alkaline gases, and the opening or closing of the pipe is controlled by the valve 244.

[0089] Furthermore, the exhaust pipe 241 is used to discharge excess gas inside the protective housing 1, and the opening or closing of the pipe is controlled by the valve 244.

[0090] In some embodiments, the protective steel plate layer 5 includes:

[0091] The horizontal metal strip 52 is uniformly welded to the left and right sides, the top and bottom sides, the rear wall of the inner cavity, and the rear wall of the door of the protective box 1.

[0092] A rectangular steel plate frame 51 is welded to the left and right sides and the top and bottom sides of the inner wall of the protective box 1;

[0093] Steel plate 53 is welded to the rear wall of the inner cavity of the protective box 1 and the rear wall of the door of the protective box 1.

[0094] Specifically in this embodiment, the horizontal metal strips 52 are evenly laid on the left and right sides, the top and bottom sides, the rear wall of the inner cavity, and the rear wall of the door of the protective box 1, as a base layer to support the rectangular steel plate frame 51 or the steel plate 53.

[0095] Furthermore, both the rectangular steel frame 51 and the steel plate 53 are made of steel, which provides shielding and protection against the impact of sample debris.

[0096] In some embodiments, the lower end of the impact energy application device 4 is provided with a metal clamping and fixing assembly 3, which is fixedly assembled to the lower end of the inner cavity of the protective box 1.

[0097] The metal part clamping and fixing assembly 3 is located directly below the impact energy application device 4;

[0098] Metal part clamping and fixing assembly 3 includes:

[0099] The bottom plate 31 is welded to the lower end of the inner cavity of the protective box 1 at its rear end;

[0100] Vertical plates 32 are fixedly mounted on both the left and right edges of the top surface of the base plate 31;

[0101] Both the left and right vertical plates 32 are screwed with screw rods 33 in the middle, and their outer ends are fixedly connected with hand-tightening round caps;

[0102] The inner end of the screw 33 is rotatably fitted with a clamping plate 34, the lower end of which slides against the top surface of the base plate 31.

[0103] Specifically in this embodiment, rotating screw 33 pushes clamping plate 34 to slide laterally along the top surface of base plate 31, driving the two clamping plates 34 to move inward to clamp the metal material to be tested between them;

[0104] Furthermore, the hand-tightening round cap provided on the outer end of the screw 33 is convenient for gripping and facilitates the rotation operation of the screw 33;

[0105] It is understandable that the rotation of the two screws 33 should be carried out simultaneously as much as possible, and the distance between the two clamping plates 34 and the center should be adjusted to be approximately the same during use, so as to better clamp and fix the metal material to be tested directly below the impact energy application device 4.

[0106] In some embodiments, the impact energy application device 4 includes:

[0107] The power-off self-locking motor 42 is fixedly assembled in the middle of the rear wall of the inner cavity of the protective housing 1;

[0108] The front shaft of the power-off self-locking motor 42 is fixedly connected to an encoder 47, which is electrically connected to an external controller.

[0109] Circular plate 41, with a circular window in its middle;

[0110] A support rod is fixedly mounted between the rear edge of the circular plate 41 and the rear wall of the inner cavity of the protective box 1.

[0111] The bar 44 has a connecting through hole 43 in the middle of its front wall, and the inner wall of the connecting through hole 43 has a groove along the length direction.

[0112] A connecting rod 45 passes through the connecting through hole 43, and its outer wall has an integrally formed strip-shaped protrusion that is inserted into the slot along the length direction;

[0113] The rear end of the connecting rod 45 passes through the circular window of the circular plate 41 and is inserted into the groove of the front shaft of the encoder 47;

[0114] The outer wall of the front shaft of encoder 47 is fixedly connected to the outer wall of the rear end of connecting rod 45 by bolts.

[0115] A round cap is fixed to the front end of the connecting rod 45, and its rear end abuts against the front wall of the strip rod 44.

[0116] The lower end of the bar 44 is fitted with a detachable hammer head 46.

[0117] Specifically, in this embodiment, the power-off self-locking motor 42 is a motor with a self-locking function after power failure, which is a direct application of the prior art. By stopping the power failure in an emergency, the swinging detachable hammer head 46 stops swinging with the self-locking of the motor, thus improving the safety of use.

[0118] Furthermore, by cooperating with the encoder and the external controller, the rotation speed and torque of the power-off self-locking motor 42 are precisely controlled, thereby controlling the impact speed and energy of the easily disassembled hammer head 46. This method provides more precise energy control and has extremely high repeatability.

[0119] More specifically, the connecting rod 45 is fixed to the encoder 47 at the rear end by bolts. Multiple bolts can be used to improve the strength of the connection. After removing the bolts, the strip rod 44 and the hammer head 46 can be disassembled, making it convenient for overall inspection and maintenance.

[0120] Understandably, the outer edge of the front wall of the circular plate 41 is marked with scales, which serve as a reference for the lifting height of the drive bar 44. When the door of the protective box 1 is opened, the magnitude of the impact energy can be judged intuitively.

[0121] In some embodiments, a connecting through hole 43 is provided at the lower end of the front wall of the bar 44, and at least two connecting through holes 43 are longitudinally distributed. By replacing the connecting rod 45 and installing it in the connecting through holes 43 at different heights, the height of the lower end of the bar 44 and the detachable hammer head 46 can be changed, so as to impact the metal material to be tested at different heights.

[0122] In some embodiments, disassembling the hammer head 46 includes:

[0123] A connecting slot 461 is provided on the bottom surface of the strip 44;

[0124] A plug rod 462 is inserted into the connecting slot 461, and a hammer head body 465 is fixedly assembled at its lower end;

[0125] The front and rear side walls of the insertion rod 462 and the connecting slot 461 are perforated by fixing bolts 463, and fixing nuts 464 are screwed to the ends of the fixing bolts 463.

[0126] There are two sets of fixing bolts 463 and fixing nuts 464.

[0127] Specifically in this embodiment, the insertion rod 462 is inserted into the connection slot 461, and the insertion rod 462 and the connection slot 461 are connected and fixed by a plurality of fixing bolts 463 and fixing nuts 464.

[0128] Furthermore, the bar 44 is oscillating, and the hammer body 465 fixed at its lower end impacts the surface of the metal material to be tested. The impact test obtains data based on the observation and detection of the indentation depth of the metal material after impact, records relevant data on the condition of the metal material after impact under different temperature, humidity and air environments, and obtains new relevant data by changing the magnitude of the impact force.

[0129] This is one embodiment of the hammer head body 465. Both ends of the hammer head body 465 are rectangular hammer surfaces with rounded corners. The metal material to be tested is impacted by the rectangular hammer surfaces with rounded corners.

[0130] This is a second embodiment of the hammer head body 465. One end of the hammer head body 465 is a rectangular hammer surface with rounded corners, and the other end of the hammer head body 465 is a pointed hammer surface with rounded corners. Different impact effects are achieved by impacting the metal material to be tested through the rectangular hammer surface with rounded corners and the pointed hammer surface with rounded corners.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An impact testing apparatus for metal detection, characterized in that, include: The protective enclosure (1) has a protective steel plate layer (5) fixedly installed in its inner cavity; The inner wall of the protective enclosure (1) is equipped with a multi-factor environmental simulation structure (2); An impact energy application device (4) is fixedly installed in the middle of the rear wall of the inner cavity of the protective box (1). The multi-factor environmental simulation structure (2) includes: Pipeline installation cavity (22) is symmetrically opened on the left and right sides of the inner wall of the protective box (1); The inner cavity of the pipeline installation cavity (22) is wrapped with a heat-conducting pipeline (26), the input and output ends of which extend to the outside of the protective box (1); A water pump is fixedly connected to the output end of the heat-conducting pipe (26); Electric heating plates (21) are embedded in the upper and lower sides of the inner wall of the protective box (1). Temperature and humidity sensor (23) is fixedly mounted on the top surface of the protective box (1), and the lower end of temperature and humidity sensor (23) extends through the reserved through hole of the upper heating plate (21) to the upper end of the inner cavity of the protective box (1); Water mist and ambient gas supply pipeline (24) is mounted on the side wall of the protective enclosure (1); The controller (25) is electrically connected to the heating plate (21), the water pump and the temperature and humidity sensor (23), respectively.

2. The impact testing apparatus for metal detection according to claim 1, characterized in that, The water mist and ambient gas supply pipeline (24) includes: An air intake pipe (243) is fixedly connected to the upper end of the side wall of the protective box (1); The side wall of the air intake pipe (243) is fixedly connected to a branch pipe (242). An exhaust pipe (241) is fixedly connected to the lower end of the side wall of the protective box (1); Valves (244) are fixedly installed on the intake pipe (243), branch pipe (242) and exhaust pipe (241).

3. The impact testing apparatus for metal detection according to claim 1, characterized in that, The protective steel plate layer (5) includes: A horizontal metal strip (52) is uniformly welded to the left and right sides, the upper and lower sides, the rear wall of the inner cavity, and the rear wall of the door of the protective box (1); A rectangular steel plate frame (51) is welded to the left and right sides and the top and bottom sides of the inner wall of the protective box (1); Steel plate (53) is welded to the rear wall of the inner cavity of the protective box (1) and the rear wall of the door of the protective box (1).

4. The impact testing apparatus for metal detection according to claim 1, characterized in that, The impact energy application device (4) is provided with a metal clamping and fixing assembly (3) at its lower end, which is fixedly assembled to the lower end of the inner cavity of the protective box (1); The metal clamping and fixing assembly (3) is located directly below the impact energy application device (4).

5. The impact testing apparatus for metal detection according to claim 4, characterized in that, The metal clamping and fixing assembly (3) includes: The bottom plate (31) is welded to the lower end of the inner cavity of the protective box (1) at its rear end; Vertical plates (32) are fixedly assembled on the left and right edges of the top surface of the base plate (31); The left and right vertical plates (32) are each screwed with a screw rod (33) in the middle, and a hand-tightening round cap is fixedly connected to their outer ends; The screw (33) is rotatably fitted with a clamping plate (34) on its inner end, and its lower end slides against the top surface of the base plate (31).

6. The impact testing apparatus for metal detection according to claim 1, characterized in that, The impact energy application device (4) includes: A power-off self-locking motor (42) is fixedly assembled in the middle of the rear wall of the inner cavity of the protective box (1); The front end shaft of the power-off self-locking motor (42) is fixedly connected to an encoder (47), which is electrically connected to an external controller; The circular plate (41) has a circular window in its middle part; A support rod is fixedly mounted between the rear edge of the circular plate (41) and the rear wall of the inner cavity of the protective box (1); The bar (44) has a connecting through hole (43) in the middle of its front wall, and the inner wall of the connecting through hole (43) has a slot along the length direction; A connecting rod (45) passes through the connecting through hole (43), and its outer wall is integrally formed with a strip-shaped protrusion that is inserted into the slot along the length direction; The rear end of the connecting rod (45) passes through the circular window of the circular plate (41) and is inserted into the groove of the front end of the encoder (47); The outer wall of the front end shaft of the encoder (47) is fixedly connected to the outer wall of the rear end of the connecting rod (45) by bolts; The front end of the connecting rod (45) is fixed with a round cap, and its rear end abuts against the front wall of the strip rod (44); The lower end of the bar (44) is fitted with a detachable hammer (46).

7. The impact testing apparatus for metal detection according to claim 6, characterized in that, The lower end of the front wall of the bar (44) is provided with a connecting through hole (43), and there are at least two connecting through holes (43) distributed longitudinally.

8. The impact testing apparatus for metal detection according to claim 6, characterized in that, The easily disassembled hammer head (46) includes: A connecting slot (461) is provided on the bottom surface of the strip (44); A rod (462) is inserted into the connecting slot (461), and a hammer body (465) is fixedly assembled at its lower end. The front and rear side walls of the insertion rod (462) and the connecting slot (461) are perforated by fixing bolts (463), and the ends of the fixing bolts (463) are screwed with fixing nuts (464). There are two sets of the fixing bolts (463) and fixing nuts (464).

9. The impact testing apparatus for metal detection according to claim 8, characterized in that, Both ends of the hammerhead body (465) are rectangular hammer surfaces with rounded chamfers.

10. The impact testing apparatus for metal detection according to claim 8, characterized in that, The hammer head body (465) has a rectangular hammer surface with rounded corners at one end and a pointed hammer surface with rounded corners at the other end.

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