A hardness testing device for steel detection

Abstract

The present invention relates to the technical field of steel material detection, and specifically relates to a hardness detection device for steel material detection, which includes a gun body. A display panel is fixedly installed on the outer wall of the gun body. A button is rotatably connected to the outer wall of the gun body, and an installation cylinder is also fixedly connected to the outer wall of the gun body. A second installation plate is fixedly connected to the inner wall of the installation cylinder. A rotating rod is rotatably connected to the outer wall of the second installation plate through a rotating shaft. A driving mechanism is fixedly installed at one end of the second installation plate away from the rotating rod, and the driving mechanism can drive the rotating rod to rotate. One end of the rotating rod away from the second installation plate is fixedly connected to a first installation plate. A number of impact mechanisms for impacting the outer wall of the steel material are installed between the first installation plate and the second installation plate. A number of limiting mechanisms for limiting the impact mechanisms are also fixedly installed between the first installation plate and the second installation plate, which is convenient to carry, simple and fast.

Description

Technical Field

[0001] The present invention relates to the technical field of steel detection, and specifically to a hardness detection device for steel detection. Background Technique

[0002] Steel hardness detection equipment is a special tool for measuring the hardness of steel. The main purpose of hardness detection is to determine the applicability of the material, or the effect of special hardening or softening treatment carried out for the purpose of use of the material. However, the traditional hardness detection device for steel detection is large in volume and difficult to move. It is necessary to take samples to the location of the device for detection, and the process is troublesome and not suitable for carrying around.

[0003] Chinese Patent (Publication No. CN117074223A), this patent discloses a hardness detection device for steel detection, which relates to the technical field of steel detection. The invention includes a detection table, a U-shaped frame is fixed on the top of the detection table, an electric push rod is fixed on the top of the U-shaped frame, the bottom of the telescopic end of the electric push rod is fixed with a hardness detection equipment main body, and a fixed-point device is also included. The fixed-point device includes a moving plate, several triangular blocks, two U-shaped plates, a telescopic arc-shaped column, and a moving block. The moving plate is slidably installed on the top of the detection table. Through the setting of the fixed-point device, under the action of the spring force corresponding to the moving block, the moving block pushes the moving plate to drive the vertical surface of the triangular block to abut against the outer wall of the telescopic arc-shaped column. The telescopic arc-shaped column restricts the position of the moving plate through the triangular block, and the positions of multiple triangular blocks correspond to the detection points of the steel, so that the staff can quickly switch the detection points of the steel to detect the hardness of the steel.

[0004] According to the above scheme, it can be known that during use, it only enhances the fixation during the process of detecting the hardness of steel, and can also be polished to remove the dirt on the outer wall. It cannot be carried around during use, and when the working site is in the wild, this device is not easy to carry, and it also has limitations in the use site. To solve the problems of not being able to be carried around and having limitations in the use site, for this reason, we propose a hardness detection device for steel detection. Summary of the Invention

[0005] The purpose of the present invention is to provide a hardness detection device for steel detection to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A hardness testing device for steel detection, including a gun body, a display panel is fixedly installed on the outer wall of the gun body, a button is rotatably connected to the outer wall of the gun body, and an installation cylinder is also fixedly connected to the outer wall of the gun body. An installation hole is opened at one end of the installation cylinder away from the gun body. A mounting cylinder is fixedly connected inside the installation cylinder, and a second mounting plate is fixedly connected to the inner wall of the installation cylinder. A rotating rod is rotatably connected to the outer wall of the second mounting plate, and a driving mechanism is fixedly installed at one end of the second mounting plate away from the rotating rod;

[0008] And the driving mechanism can drive the rotating rod to rotate. One end of the rotating rod away from the second mounting plate is fixedly connected to a first mounting plate. A number of impact mechanisms for impacting the outer wall of the steel are installed between the first mounting plate and the second mounting plate. A number of limiting mechanisms for limiting the impact mechanism are also fixedly installed between the first mounting plate and the second mounting plate.

[0009] As a further improvement of this solution, the driving mechanism includes a rotating disk, the rotating disk is fixedly connected to the rotating rod, and a number of clamping blocks are fixedly connected to the outer wall of the rotating disk. A driving motor is fixedly installed at one end of the second mounting plate close to the rotating disk. The output end of the driving motor is fixedly connected to a first gear. A connecting rod is also slidably connected to one end of the second mounting plate close to the rotating disk.

[0010] As a further improvement of this solution, a matching port is opened inside the second mounting plate, a reset contraction rod is also fixedly connected to the outer wall of the second mounting plate, and the output end of the reset contraction rod is fixedly connected to the connecting rod. A push arm with a reset function is rotatably connected to the outer wall of the connecting rod, and each group of clamping blocks is adapted to the push arm.

[0011] As a further improvement of this solution, each group of impact mechanisms includes a swing arm, the swing arm is rotatably connected to the outer wall of the rotating rod, and an elastic torsion spring is fixedly installed between the swing arm and the rotating rod. One end of the swing arm away from the rotating rod is rotatably connected to a recovery wheel. A pull rope is fixedly connected to the outer wall of the recovery wheel. One end of the recovery wheel away from the swing arm is fixedly connected to a second round box, and a number of first sliding grooves are opened inside the second round box.

[0012] As a further improvement of this solution, a reset ball is slidably installed in each group of first sliding grooves. A first round box is also movably connected to the outer wall of the second round box. A number of matching ball grooves are opened on the inner wall of the first round box. Each group of matching ball grooves is adapted to the reset ball. One end of the first round box away from the second round box is fixedly connected to a contact wheel, and the outer wall of the contact wheel is in contact with the outer wall of the second mounting plate.

[0013] As a further improvement of this solution, a set of limiting arms is provided above each swing arm, and each set of limiting arms is fixedly connected to the outer wall of the rotating rod. One end of the first mounting plate close to the second mounting plate is fixedly connected with a number of movable tubes, and a connecting rectangular box is fixedly connected to the outer wall of the movable tube. The connecting rectangular box is in communication with the movable tube. A striking rod is slidably connected in the inner wall of the movable tube, and the outer wall of the striking rod is connected to a pulling rope. A moving circular plate is fixedly connected to the outer wall of the striking rod, and a first elastic spring is fixedly connected between the moving circular plate and the inner wall of the movable tube. The outer wall of the moving circular plate is slidably connected to the inner wall of the movable tube. A contact head is fixedly installed at the end of the striking rod away from the pulling rope.

[0014] As a further improvement of this solution, the limiting mechanism includes a fixed block, which is fixedly installed on the outer wall of the moving circular plate. A second telescopic tube is fixedly connected to the outer wall of the fixed block, and a first telescopic tube is fixedly connected to the outer wall of the connecting rectangular box. The first telescopic tube and the second telescopic tube are fixedly connected and communicated through a pipeline. A sliding ball is movably connected to the output end of the first telescopic tube. A contact mounting strip is fixedly connected to one end of the second mounting plate close to the sliding ball. A third circular box is fixedly connected to the output end of the second telescopic tube.

[0015] As a further improvement of this solution, a number of first teeth are fixedly connected in the inner wall of the third circular box. A fourth circular box is arranged inside the third circular box. A number of second sliding grooves are opened inside the fourth circular box. A second tooth is slidably connected in the inner wall of the second sliding groove. A second elastic spring is fixedly connected between the second tooth and the inner wall of the second sliding groove. One end of the fourth circular box away from the third circular box is rotatably connected to a sliding wheel through a rotating shaft, and the outer wall of the sliding wheel abuts against the inner wall of the connecting rectangular box.

[0016] As a further improvement of this solution, a first contact plate is fixedly connected to the outer wall of the connecting rectangular box.

[0017] A second contact plate is fixedly connected to the outer wall of the fixed block, and the second contact plate abuts against the first contact plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. When the present invention is used, since the traditional instrument for detecting the hardness of steel is bulky and the sample to be detected needs to be taken to the laboratory and relevant instruments are used for detection. Although the results are accurate, there are limitations for the working site. This device is applicable to various places, including laboratories, construction sites, and the wild, and is not restricted by the site.

[0020] 2. When the present invention is in use, the impact rod drives the abutting head to impact the indentation on the outer wall of the steel, and then the laser scanner is used to detect the distance between the first abutting plate and the second abutting plate. Then, the distance between the first abutting plate and the second abutting plate is transmitted into the display panel. The display panel performs calculations, and by checking several groups of indentations that appear first and have similar depths, the hardness is calculated, and thus the hardness range of the steel can be obtained.

[0021] 3. When the present invention is in use, since the first elastic spring drives the impact rod to impact the outer wall of the steel, a set of rebounding forces will be generated. And when the impact rod rebounds, the second tooth is engaged with the first tooth. At this time, the sliding wheel cannot rotate, and the sliding wheel can limit the fixed block. The fixed block can limit the impact rod through the moving circular plate to prevent the impact rod from rebounding and causing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the front view of a hardness detection device for steel detection.

[0023] Figure 2 It is the schematic diagram of the internal structure of the installation cylinder in a hardness detection device for steel detection.

[0024] Figure 3 It is the schematic diagram of the position structure of the abutting wheel in a hardness detection device for steel detection.

[0025] Figure 4 It is the schematic diagram of the structure of the driving mechanism in a hardness detection device for steel detection.

[0026] Figure 5 For Figure 4 The enlarged view at A in

[0027] Figure 6 It is the schematic diagram of the outer wall structure of the second mounting plate in a hardness detection device for steel detection.

[0028] Figure 7 It is the schematic diagram of the position structure of the recovery wheel in a hardness detection device for steel detection.

[0029] Figure 8 It is the schematic diagram of the internal structure of the first round box in a hardness detection device for steel detection.

[0030] Figure 9 It is the schematic diagram of the internal structure of the movable tube in a hardness detection device for steel detection.

[0031] Figure 10 It is the schematic diagram of the position structure of the abutting mounting strip in a hardness detection device for steel detection.

[0032] Figure 11Schematic diagram of the position structure of the sliding wheel in a hardness testing device for steel testing.

[0033] Figure 12 Schematic diagram of the position structure of the third round box in a hardness testing device for steel testing.

[0034] Figure 13 Schematic diagram of the internal structure of the second sliding groove in a hardness testing device for steel testing.

[0035] Figure 14 Schematic diagram of the abutment of the first abutting plate and the second abutting plate in a hardness testing device for steel testing.

[0036] In the figure: 1. Installation cylinder; 2. Installation hole; 3. Button; 4. Gun body; 5. First mounting plate; 6. Second mounting plate; 7. Movable tube; 8. Rotating rod; 9. Fitting port; 10. Clamping block; 11. Rotating disk; 12. Contact wheel; 13. Driving motor; 14. First gear; 15. Connecting rod; 16. Pulling rope;

[0037] 17. Swing arm; 18. Recovery wheel; 19. Limiting arm; 20. First round box; 21. Second round box; 22. Contact ball; 23. First sliding groove; 24. Fitting spherical groove; 25. First elastic spring; 26. First abutting plate; 27. Moving round plate; 28. Impact rod; 29. Contact head; 30. Connecting rectangular box;

[0038] 31. Fixed block; 32. First telescopic tube; 33. Sliding ball; 34. Contact mounting strip; 35. Second telescopic tube; 36. Third round box; 37. Fourth round box; 38. Second tooth; 39. Second sliding groove; 40. Second elastic spring; 41. Second abutting plate; 42. Inspection port; 43. Reset retracting rod; 44. Sliding wheel; 45. Display panel; 46. Pushing arm; 101. Driving mechanism; 201. Impact mechanism; 301. Limiting mechanism. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1: Please refer to Figure 1 、 2, as shown in Figures 3 and 4, in an embodiment of the present invention, a hardness detection device for steel detection includes a gun body 4. A display panel 45 is fixedly installed on the outer wall of the gun body 4. A button 3 is rotatably connected to the outer wall of the gun body 4, and an installation cylinder 1 is also fixedly connected to the outer wall of the gun body 4. An installation hole 2 is provided at one end of the installation cylinder 1 away from the gun body 4, and the installation hole 2 is circular. An inspection port 42 for facilitating inspection of the interior is provided at the bottom of the installation cylinder 1. A second mounting plate 6 is fixedly connected to the inner wall of the installation cylinder 1. A rotating rod 8 is rotatably connected to the outer wall of the second mounting plate 6 through a rotating shaft. A driving mechanism 101 is fixedly installed at one end of the second mounting plate 6 away from the rotating rod 8, and the driving mechanism 101 can drive the rotating rod 8 to rotate. One end of the rotating rod 8 away from the second mounting plate 6 is fixedly connected to a first mounting plate 5. A plurality of impact mechanisms 201 for impacting the outer wall of the steel are installed between the first mounting plate 5 and the second mounting plate 6. A plurality of limiting mechanisms 301 for limiting the impact mechanisms 201 are also fixedly installed between the first mounting plate 5 and the second mounting plate 6. The impact mechanisms 201 and the limiting mechanisms 301 are circumferentially distributed between the first mounting plate 5 and the second mounting plate 6.

[0041] Embodiment 2: Please refer to Figure 1 , 5 , as shown in the figure. The driving mechanism 101 includes a rotating disk 11. The rotating disk 11 is fixedly connected to the rotating rod 8. A plurality of clamping blocks 10 are fixedly connected to the outer wall of the rotating disk 11, and the plurality of clamping blocks 10 are circumferentially distributed on the outer wall of the rotating disk 11. A driving motor 13 is fixedly installed at one end of the second mounting plate 6 close to the rotating disk 11. When the button 3 is pressed, the driving motor 13 will start. The output end of the driving motor 13 is fixedly connected to a first gear 14. A connecting rod 15 is also slidably connected to one end of the second mounting plate 6 close to the rotating disk 11. Specifically, a sliding groove is provided on the outer wall of the second mounting plate 6, and a sliding strip is fixedly connected to the bottom of the connecting rod 15. The outer wall of the sliding strip is slidably connected to the inner wall of the sliding groove. Lubricating oil is applied to both the outer wall of the sliding strip and the inner wall of the sliding groove. When the connecting rod 15 moves on the outer wall of the second mounting plate 6, the connecting rod 15 can move through the sliding strip in the inner wall of the sliding groove, and the sliding groove can limit the connecting rod 15 through the sliding strip and has a guiding effect, and can also improve the stability of the connecting rod 15 when moving. The lubricating oil can also reduce the friction between the sliding strip and the sliding groove and extend the service life of the sliding strip and the sliding groove. A mating port 9 is provided inside the second mounting plate 6. A reset contraction rod 43 is also fixedly connected to the outer wall of the second mounting plate 6, and the output end of the reset contraction rod 43 is fixedly connected to the connecting rod 15. A push arm 46 with a reset function is rotatably connected to the outer wall of the connecting rod 15, and a reset torsion spring is installed between the push arm 46 and the connecting rod 15. Each group of clamping blocks 10 is adapted to the push arm 46;

[0042] Please refer to Figure 6 , 7As shown in FIGS. 8 and 9, each impact mechanism 201 includes a swing arm 17. The swing arm 17 is rotatably connected to the outer wall of the rotating rod 8 through a rotating shaft. An elastic torsion spring is fixedly installed between the swing arm 17 and the rotating rod 8. All the swing arms 17 are circumferentially distributed on the outer wall of the rotating rod 8. One end of the swing arm 17 away from the rotating rod 8 is rotatably connected to a recovery wheel 18. A pull rope 16 is fixedly connected to the outer wall of the recovery wheel 18. The recovery wheel 18 is made of polycarbonate PC, with low density, high strength and corrosion resistance. The pull rope 16 is made of ultra-high molecular weight polyethylene fiber wire, with high strength and excellent wear resistance and chemical corrosion resistance. One end of the recovery wheel 18 away from the swing arm 17 is fixedly connected to a second round box 21. A number of first sliding grooves 23 are opened inside the second round box 21. A ball 22 with a reset function is slidably installed in each group of first sliding grooves 23. Specifically, a contraction arm is fixedly connected to the inner wall of each group of first sliding grooves 23. The output end of the contraction arm is fixedly connected to the corresponding ball 22. A reset spring for resetting the ball 22 is also fixedly connected between the ball 22 and the inner wall of the first sliding groove 23. The reset spring is sleeved on the outer wall of the contraction arm. The outer wall of the second round box 21 is also movably connected to a first round box 20. A number of mating ball grooves 24 are opened on the inner wall of the first round box 20. The number of mating ball grooves 24 is also circumferentially distributed on the inner wall of the first round box 20. Each group of mating ball grooves 24 is adapted to the ball 22. One end of the first round box 20 away from the second round box 21 is fixedly connected to a contact wheel 12. The outer wall of the contact wheel 12 is in contact with the outer wall of the second mounting plate 6. A rubber sleeve is fixedly installed on the outer wall of the contact wheel 12. The rubber sleeve can enhance the friction between the contact wheel 12 and the second mounting plate 6 and prevent the contact wheel 12 from slipping when rotating;

[0043] Please refer to Figure 4 、 9 As shown in FIGS., a set of limit arms 19 are arranged above each swing arm 17. Each set of limit arms 19 is fixedly connected to the outer wall of the rotating rod 8. The limit arms 19 can limit the swing arm 17 to prevent the swing arm 17 from rotating upward too much. One end of the first mounting plate 5 close to the second mounting plate 6 is fixedly connected with a number of movable tubes 7. A connecting rectangular box 30 is fixedly connected to the outer wall of the movable tube 7. The connecting rectangular box 30 is communicated with the movable tube 7. An impact rod 28 is slidably connected in the inner wall of the movable tube 7. The outer wall of the impact rod 28 is connected to the pull rope 16. A moving circular plate 27 is fixedly connected to the outer wall of the impact rod 28. A first elastic spring 25 is fixedly connected between the moving circular plate 27 and the inner wall of the movable tube 7. It should be noted that the elastic forces of the first elastic springs 25 inside each group of movable tubes 7 are distributed in a circular pattern from large to small in sequence. The outer wall of the moving circular plate 27 is slidably connected to the inner wall of the movable tube 7. One end of the impact rod 28 away from the pull rope 16 is fixedly installed with a contact head 29;

[0044] Please refer to Figure 9 、10 As shown in FIGS. 11, 12, 13, and 14, the limit mechanism 301 includes a fixed block 31 which is fixedly installed on the outer wall of the moving circular plate 27. A second telescopic tube 35 is fixedly connected to the outer wall of the fixed block 31. A first telescopic tube 32 is fixedly connected to the outer wall of the connecting rectangular box 30, and the first telescopic tube 32 is fixedly connected and communicated with the second telescopic tube 35 through a pipeline. After the first telescopic tube 32 is compressed, air will enter the second telescopic tube 35 through the pipeline. The output end of the first telescopic tube 32 is movably connected with a sliding ball 33, and the sliding ball 33 is spherical. One end of the second mounting plate 6 close to the sliding ball 33 is fixedly connected with an abutting mounting strip 34, and the abutting mounting strip 34 is located on one side of the matching port 9. The output end of the second telescopic tube 35 is fixedly connected with a third circular box 36, and a number of first teeth are fixedly connected in the inner wall of the third circular box 36. A fourth circular box 37 is arranged inside the third circular box 36. A number of second sliding grooves 39 are opened inside the fourth circular box 37. A second tooth 38 is slidably connected to the inner wall of the second sliding groove 39. A second elastic spring 40 is fixedly connected between the second tooth 38 and the inner wall of the second sliding groove 39. Each group of second teeth 38 is adapted to the first teeth, and the first teeth and the second teeth 38 are circumferentially distributed on the inner wall of the third circular box 36 and the outer wall of the fourth circular box 37 respectively. A number of weight-reducing holes are opened inside the fourth circular box 37. One end of the fourth circular box 37 away from the third circular box 36 is rotatably connected with a sliding wheel 44 through a rotating shaft. The outer wall of the sliding wheel 44 abuts against the inner wall of the connecting rectangular box 30. Anti-slip rubber pads are installed on the outer walls of the sliding wheel 44 and the connecting rectangular box 30, and the anti-slip rubber pads are made of rubber material. When the sliding wheel 44 abuts against the inner wall of the connecting rectangular box 30, the anti-slip rubber pads can enhance the friction between the sliding wheel 44 and the connecting rectangular box 30. A first abutting plate 26 is fixedly connected to the outer wall of the connecting rectangular box 30. A second abutting plate 41 is fixedly connected to the outer wall of the fixed block 31. The second abutting plate 41 abuts against the first abutting plate 26. A laser scanner is installed inside the first abutting plate 26, and the laser scanner uses a Duke Ls-P laser rangefinder. Bluetooth transmission modules are installed inside both the laser scanner and the display panel 45. After the laser scanner finishes scanning the distance between the first abutting plate 26 and the second abutting plate 41, data can be transmitted to the inside of the display panel 45 through the Bluetooth transmission module.

[0045] The working principle of the present invention is to align the mounting hole 2 with the outer wall of the steel, and press the mounting cylinder 1 tightly against the outer wall of the steel. At this time, start the driving motor 13, which drives the first gear 14 to rotate. The first gear 14 drives the connecting rod 15 to move. The connecting rod 15 drives the pushing arm 46 to abut against the corresponding clamping block 10. At this time, the clamping block 10 drives the rotating disc 11 to rotate. When the driving motor 13 stops rotating, the reset contraction rod 43 drives the connecting rod 15 to reset. The rotating disc 11 drives the first mounting plate 5 to rotate through the rotating rod 8, and the rotating rod 8 drives all the swing arms 17 and the movable tube 7 to rotate;

[0046] Since the outer wall of the abutting wheel 12 abuts against the bottom of the second mounting plate 6, when the abutting wheel 12 rotates, the abutting wheel 12 drives the recovery wheel 18 to rotate. The recovery wheel 18 pulls the pull rope 16, and the pull rope 16 pulls the impact rod 28. When the moving circular plate 27 inside the movable tube 7 reaches the apex and cannot be pulled anymore, at this time, the abutting ball 22 on the outer wall of the pull rope 16 will be clamped in the inner wall of the corresponding mating spherical groove 24. When the abutting force between the abutting ball 22 and the mating spherical groove 24 reaches the limit, at this time, the abutting ball 22 will contract into the first sliding groove 23 and disengage from the current mating spherical groove 24. This process repeats in sequence. The pull rope 16 pulls the impact rod 28, and the impact rod 28 drives the first elastic spring 25 to contract through the moving circular plate 27. Note that the initial velocity of the impact rod 28 is achieved by the elastic force of the first elastic spring 25. When the first elastic spring 25 is compressed, it stores energy, and this energy is called elastic potential energy:

[0047]

[0048] Among them, is the unit of elastic potential energy of the first elastic spring 25: joule, J. is the unit of the elastic coefficient of the spring: N / m, and is the unit of the compression or elongation of the spring: m;

[0049] At the same time, when the movable tube 7 rotates, it will also drive the corresponding connecting rectangular box 30 to rotate. The connecting rectangular box 30 drives the sliding ball 33 to move on the outer wall of the second mounting plate 6 through the first telescopic tube 32. Note that when the abutting wheel 12 disengages from the outer wall of the second mounting plate 6 and reaches the mating port 9 inside, the sliding ball 33 will also reach the outer wall of the abutting mounting strip 34 at the same time;

[0050] According to the law of conservation of energy, the elastic potential energy of the spring is converted into the kinetic energy of the test needle mounting hole 2. Through the above formula, the initial velocity of the test needle mounting hole 2 can be solved:

[0051]

[0052] Among them, It reflects the characteristics of the system. The greater the stiffness coefficient k of the first elastic spring 25, the smaller the mass m, the greater the speed, x is the compression amount of the spring. The greater the compression amount, the greater the initial speed. When the first elastic spring 25 releases elastic kinetic energy;

[0053] When the abutting wheel 12 is located inside the mating port 9, the abutting wheel 12 is in a suspended state. Since the abutting wheel 12 loses the restriction of the second mounting plate 6, at this time, the first elastic spring 25 will drive the impact rod 28 to quickly reset through the moving circular plate 27, and the impact rod 28 will drive the abutting head 29 to quickly impact the outer surface of the steel, and at this time, a dent will appear on the outer wall of the steel;

[0054] When the test needle mounting hole 2 impacts the metal surface at the initial speed, the kinetic energy causing the groove on it is the main factor. The kinetic energy formula is:

[0055]

[0056] Among them, EK is the kinetic energy in joules, J, m is the mass of the test needle mounting hole 2 in kilograms, kg, is the initial speed of the test needle mounting hole 2 in meters per second, m / s. Then, after being accelerated by the impact rod 28 and impacting the steel surface to produce a dent, the hardness of the steel is detected. The above calculation method is stored in the storage unit in the display panel 45. All the above calculation methods are stored in the storage unit in the display panel 45, and then the calculation is completed by the calculation unit;

[0057] While the abutting wheel 12 is suspended inside the mating port 9, the corresponding sliding ball 33 is located on the outer wall of the abutting mounting strip 34. The first telescopic tube 32 contracts, and the gas inside the first telescopic tube 32 enters the second telescopic tube 35. The second telescopic tube 35 drives the third circular box 36 to move in the direction of the fourth circular box 37. When the fourth circular box 37 is located inside the third circular box 36, at this time, the sliding wheel 44 will move along the inner wall of the connecting rectangular box 30. The sliding wheel 44 drives the fourth circular box 37 to rotate, and the fourth circular box 37 drives the corresponding second tooth 38 to move. When each group of second teeth 38 abuts against the first tooth inside the third circular box 36, the second tooth 38 contracts into the second sliding groove 39. When the abutting head 29 rebounds after impacting the steel, when the impact rod 28 rebounds, the second tooth 38 is engaged with the first tooth. At this time, the sliding wheel 44 cannot rotate, and the sliding wheel 44 can limit the fixed block 31. The fixed block 31 can limit the impact rod 28 through the moving circular plate 27 to prevent the impact rod 28 from rebounding;

[0058] When the rotating rod 8 rotates once again, the abutting wheel 12 inside the mating port 9 will re-abut against the outer wall of the second mounting plate 6. At the same time, the sliding ball 33 will quickly leave the abutment against the outer wall of the abutting mounting strip 34, and the first telescopic tube 32 will reset. The first telescopic tube 32 will pump air into the second telescopic tube 35, and the second telescopic tube 35 will contract, driving the third round box 36 to disengage from the clamping connection with the fourth round box 37. At this time, the sliding wheel 44 loses its restriction, and the sliding wheel 44 will release the limit on the fixed block 31 and the moving circular plate 27. According to the above, every time the rotating rod 8 rotates once, the abutting head 29 can strike the outer wall of the steel once until obvious dents appear on the outer wall of the steel. When the laser scanner measures the distance between the first abutting plate 26 and the second abutting plate 41, the depth of the dent can be obtained. The laser scanner then transmits the value to the display panel 45 through the Bluetooth transmission module, and the display panel 45 can obtain more accurate data through the above formula.

[0059] Moreover, since the elastic forces of the first elastic springs 25 inside each group of movable tubes 7 are different, and the impact forces exerted by the corresponding impact rods 28 of each group on the outer wall of the steel are also different, by taking out several groups with obvious dent depths, the hardness value of the steel can be obtained within a fixed range.

[0060] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A hardness testing device for steel testing, comprising a gun body (4), characterized in that: The outer wall of the gun body (4) is fixedly mounted with a display panel (45), the outer wall of the gun body (4) is rotatably connected with a button (3), and the outer wall of the gun body (4) is also fixedly connected with a mounting tube (1), an end of the mounting tube (1) away from the gun body (4) is provided with a mounting hole (2), the mounting tube (1) is fixedly connected inside the mounting tube (1), and a second mounting plate (6) is fixedly connected to the inner wall of the mounting tube (1), the outer wall of the second mounting plate (6) is rotatably connected with a rotating rod (8), and a driving mechanism (101) is fixedly mounted on the end of the second mounting plate (6) away from the rotating rod (8); The driving mechanism (101) can drive the rotating rod (8) to rotate; one end of the rotating rod (8) away from the second mounting plate (6) is fixedly connected to the first mounting plate (5); a plurality of impact mechanisms (201) capable of impacting the outer wall of the steel material are installed between the first mounting plate (5) and the second mounting plate (6); and a plurality of limiting mechanisms (301) capable of limiting the position of the impact mechanisms (201) are also fixedly installed between the first mounting plate (5) and the second mounting plate (6); Each group of the impact mechanisms (201) comprises a swing arm (17), the swing arm (17) being rotatably connected to the outer wall of the rotating rod (8), an elastic torsion spring being fixedly installed between the swing arm (17) and the rotating rod (8), an end of the swing arm (17) away from the rotating rod (8) being rotatably connected to a recovery wheel (18), an outer wall of the recovery wheel (18) being fixedly connected to a pushing arm (46), an end of the recovery wheel (18) away from the swing arm (17) being fixedly connected to a second round box (21), and a plurality of first sliding grooves (23) being provided inside the second round box (21); An abutment ball (22) with a reset function is slidably installed inside each group of the first sliding grooves (23); the outer wall of the second round box (21) is also movably connected to the first round box (20); and the inner wall of the first round box (20) is provided with a plurality of matching round ball grooves (24); each group of the matching round ball grooves (24) is adapted to the abutment ball (22); an abutment wheel (12) is fixedly connected to one end of the first round box (20) away from the second round box (21); and the outer wall of the abutment wheel (12) abuts against the outer wall of the second mounting plate (6); A group of limiting arms (19) is arranged above each group of the swing arms (17), and each group of the limiting arms (19) is fixedly connected to the outer wall of the rotating rod (8); a plurality of movable tubes (7) are fixedly connected to one end of the first mounting plate (5) close to the second mounting plate (6); a connecting rectangular box (30) is fixedly connected to the outer wall of the movable tube (7); the connecting rectangular box (30) and the movable tube (7) are communicated with each other; a striking rod (28) is slidably connected to the inner wall of the movable tube (7); the outer wall of the striking rod (28) and the pull rope (16) are connected to each other; a moving circular plate (27) is fixedly connected to the outer wall of the striking rod (28); a first elastic spring (25) is fixedly connected between the moving circular plate (27) and the inner wall of the movable tube (7); the outer wall of the moving circular plate (27) and the inner wall of the movable tube (7) are slidably connected; and a butt joint (29) is fixedly installed at one end of the striking rod (28) away from the pull rope (16).

2. A hardness testing device for steel testing according to claim 1, characterized in that: The driving mechanism (101) comprises a rotating disk (11), the rotating disk (11) being fixedly connected to a rotating rod (8), and a plurality of clamping blocks (10) being fixedly connected to an outer wall of the rotating disk (11); a driving motor (13) being fixedly mounted on one end of the second mounting plate (6) close to the rotating disk (11); a first gear (14) being fixedly connected to an output end of the driving motor (13); and a connecting rod (15) being slidably connected to one end of the second mounting plate (6) close to the rotating disk (11).

3. A hardness testing device for steel testing according to claim 2, characterized in that: A matching opening (9) is provided inside the second mounting plate (6), and a reset and retractable rod (43) is fixedly connected to the outer wall of the second mounting plate (6), and the output end of the reset and retractable rod (43) is fixedly connected to the connecting rod (15), and the outer wall of the connecting rod (15) is rotatably connected to a push arm (46) having a reset function, and each group of the clamping blocks (10) is adapted to the push arm (46).

4. A hardness testing device for steel testing according to claim 1, characterized in that: The limiting mechanism (301) comprises a fixed block (31), the fixed block (31) being fixedly mounted on the outer wall of the movable circular plate (27), the outer wall of the fixed block (31) being fixedly connected to a second telescopic tube (35), the outer wall of the connecting rectangular box (30) being fixedly connected to a first telescopic tube (32), the first telescopic tube (32) and the second telescopic tube (35) being fixedly connected via a pipeline, the output end of the first telescopic tube (32) being movably connected to a sliding ball (33), the end of the second mounting plate (6) close to the sliding ball (33) being fixedly connected to an abutting mounting strip (34), and the output end of the second telescopic tube (35) being fixedly connected to a third circular box (36).

5. A hardness testing device for steel testing according to claim 4, characterized in that: A plurality of first latching teeth are fixedly connected to the inner wall of the third round box (36), a fourth round box (37) is arranged inside the third round box (36), a plurality of second sliding grooves (39) are opened inside the fourth round box (37), a second latching tooth (38) is slidably connected to the inner wall of the second sliding groove (39), and a second elastic spring (40) is fixedly connected between the second latching tooth (38) and the inner wall of the second sliding groove (39).

6. A hardness testing device for steel testing according to claim 5, characterized in that: The outer wall of the connecting rectangular box (30) is fixedly connected with a first abutment plate (26).

7. A hardness testing device for steel testing according to claim 6, characterized in that: A second abutment plate (41) is fixedly connected to the outer wall of the fixed block (31), and the second abutment plate (41) abuts against the first abutment plate (26) against each other.

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