Hardness detection system for strip steel rough rolling heat-crack-resistant section steel roller

Abstract

The invention relates to the technical field of hardness detection, and discloses a hardness detection system for a strip steel rough rolling heat-crack-resistant section steel roller. The knocking assembly is used for carrying out hardness detection in a knocking mode; the feeding assembly is used for automatic feeding; the knocking assembly comprises an installation frame, the installation frame is fixedly installed on the operation table, a ball sliding block and a sliding plate are installed on the installation frame in a sliding mode, the ball sliding block is fixedly connected with the sliding plate, a ball screw is rotatably installed on the installation frame, and a conical shaft is connected to the sliding plate in a penetrating and sliding mode. Through the arrangement of the knocking assembly, the poking shaft, the heavy hammer and the conical shaft are matched with the triangular blocks, so that the conical shaft can intermittently knock out a plurality of indentations on the roller, the technical effect that multi-point detection can be automatically carried out in the one-time hardness detection process of the roller is achieved, and the detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of hardness testing technology, and specifically to a hardness testing system for a strip steel roughing roll resistant to thermal cracking. Background Technology

[0002] The strip roughing roll for heat-crack resistant steel is a type of roll used in the rolling of steel sections. It has good wear resistance and can withstand the friction and wear of metal materials during the rolling process, extending the service life of the roll. Since the hardness of the roll directly affects the wear resistance, strength, and fatigue resistance of the strip roughing roll for heat-crack resistant steel, insufficient hardness can easily lead to premature wear of the roll, while excessive hardness may cause brittle fracture. Therefore, hardness testing is required to ensure that the performance of the roll meets the requirements of the rolling conditions and to ensure its stability and service life during the production process. The conventional method for testing the hardness of rolls includes the Rockwell hardness test, which works by pressing an indenter into the surface of the roll under a certain load and determining the hardness value based on the depth of the indentation. This method is simple to operate and has high testing efficiency.

[0003] However, the existing technology has the following problems: In existing technologies, when testing the hardness of rolls, workers usually need to manually place the rolls on the testing instrument. When multiple points of hardness testing are required, workers need to manually adjust the position of the rolls after each point is tested before proceeding to the next point. Each roll requires multiple manual adjustments, which is time-consuming and affects testing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a hardness testing system for hot-crack resistant steel rolls in strip roughing to solve the above-mentioned problems. It aims to overcome the shortcomings of the existing technology, which usually requires workers to manually place the rolls on the testing instrument for testing, and each roll needs to be manually adjusted multiple times, which is time-consuming. Details are described below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a hardness testing system for hot-crack resistant steel rolls in strip roughing, comprising: an operating table; a striking assembly for hardness testing by striking; and a feeding assembly for automatic feeding. The striking assembly includes a mounting frame, which is fixedly mounted on the operating table. A ball bearing slider and a sliding plate are slidably mounted on the mounting frame, and the ball bearing slider is fixedly connected to the sliding plate. A ball screw is rotatably mounted on the mounting frame. A tapered shaft is slidably connected through the sliding plate, and a counterweight is fixedly connected to the top of the tapered shaft. A mounting plate is fixedly connected to the operating table, and multiple triangular blocks are slidably connected to the mounting plate.

[0006] Preferably, a motor is mounted on the mounting bracket, the output end of the motor is connected to a ball screw, the ball screw is threadedly connected to a ball slider, a ball is provided inside the connection between the ball screw and the ball slider, a detector is provided on the operating table, and a probe is provided on the bottom surface of the slide plate.

[0007] Preferably, the multiple triangular blocks are arranged in a linear array, and a pivot is slidably connected through the weight, the pivot sequentially sliding into contact with the multiple triangular blocks during movement.

[0008] Preferably, a sliding shaft is fixedly connected to the dial shaft, and a groove plate is fixedly installed on the mounting bracket. The groove plate is provided with a parallelogram groove, and the sliding shaft is slidably connected to the parallelogram groove.

[0009] Preferably, the striking assembly further includes an adjustment part, which includes an adjustment plate slidably connected to the bottom surface of the mounting plate. The adjustment plate is provided with multiple sliding grooves, and a nut seat is fixedly connected to the adjustment plate. A screw is rotatably mounted on the mounting plate, and the screw is threadedly connected to the nut seat. The bottom of each of the multiple triangular blocks is fixedly connected to a short shaft, and the multiple short shafts are slidably connected to the multiple sliding grooves.

[0010] Preferably, the feeding assembly includes a rotating shaft, which is rotatably mounted on a mounting frame. Two cross wheels are fixedly connected to the outer wall of the rotating shaft. A first slide rail and a second slide rail are fixedly mounted on the operating table, and the cross wheels are located between the first slide rail and the second slide rail.

[0011] Preferably, a bushing is fixedly connected to the outer wall of the rotating shaft, and a set of first inclined blocks and a set of second inclined blocks are fixedly connected to the bushing. A column is fixedly connected to the bottom surface of the ball slider, and a sliding column is fixedly connected to the column. The set of first inclined blocks consists of four blocks arranged in a circular array, and the set of second inclined blocks consists of four blocks arranged in a circular array. During the movement, the sliding column slides in contact with one of the first inclined blocks and one of the second inclined blocks.

[0012] Preferably, the mounting frame is provided with a maintenance component, which includes a base, the base being fixedly connected to the mounting frame, a gear shaft being rotatably connected to the base, and a cleaning cotton being fixedly connected to the gear shaft, the cleaning cotton being located on the movement trajectory of the conical shaft.

[0013] Preferably, the maintenance component further includes two light rods, both of which are fixedly mounted on the mounting frame. Brush plates are slidably connected to the two light rods. Springs are provided on the outer walls of the light rods. One end of each spring is connected to the mounting frame, and the other end of each spring is connected to the brush plate. When the brush plate moves, it contacts the top surface of the cleaning cotton. The brush plate is located on the movement trajectory of the conical shaft. A rack is fixedly connected to the brush plate, and the rack meshes with the gear shaft.

[0014] A method for testing the hardness of hot-crack resistant steel rolls in rough rolling of strip steel includes the following steps: Step 1: Inspection preparation. Determine the material and specifications of the rolls, clean and polish the inspection surface with sandpaper or similar materials to remove impurities and ensure that the roll surface is flat. Step 2: Equipment calibration, debugging of the testing instrument, and calibration using a standard block; Step 3: Plan the layout of the inspection points. According to the roll structure and usage requirements, plan the inspection points on the roll surface and adjust the spacing between the inspection points using the adjustment mechanism. Step 4: Testing Implementation. Place multiple rolls in the first slide, start the motor and start the test. The multiple rolls are tested for hardness in sequence, and the tester records the hardness value at each point. Step 5: The testing instrument calculates the mean and standard deviation of the hardness data for each roll, compares it with the standard to determine whether it is qualified, analyzes the cause of abnormal data and re-inspects; Step Six: Issue the results, determine the quality according to the standards, and issue a report including roll information, testing methods, data and determination results, with equipment calibration records attached.

[0015] The beneficial effects are: 1. The hardness testing system for the strip steel roughing anti-heat cracking section roll, through the setting of the striking component, enables the turning shaft, counterweight, and tapered shaft to work in conjunction with multiple triangular blocks, so that the tapered shaft can intermittently strike multiple indentations on the roll. This achieves the technical effect of automatically performing multi-point testing on the roll in one hardness test, reducing the need for operators to constantly adjust the roll position during the testing process and improving testing efficiency.

[0016] 2. The hardness testing system for the strip steel roughing anti-heat cracking section roll, through the setting of the adjustment part, allows the operator to achieve the technical effect of multiple triangular blocks with equal spacing by rotating the screw, thereby adjusting the distance between the roll testing points and thus meeting different hardness testing requirements.

[0017] 3. The hardness testing system for the strip steel rough rolling anti-heat cracking section steel rolls, through the setting of the feeding component, enables the rotating shaft to automatically rotate 90 degrees after the hardness test of one roll is completed, so that the next roll to be tested can be positioned, and the roll that has completed the test leaves the operating table, achieving the technical effect of automatic loading and unloading and improving the level of automation.

[0018] 4. The hardness detection system of the strip steel rough rolling anti-heat cracking section steel roll, through the setting of the maintenance component, enables the cone shaft to clean the bottom of the cone shaft by contacting the cleaning cotton after the indentation operation, so as to maintain the cleanliness of the bottom of the cone shaft and avoid the accumulation of more impurities on the bottom of the cone shaft after long-term use, thereby affecting the accuracy of indentation formation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the operating table structure of the present invention; Figure 3 This is a schematic diagram of the striking component structure of the present invention; Figure 4 This is a schematic diagram of the mounting bracket structure of the present invention; Figure 5 This is a schematic diagram of the groove plate structure of the present invention; Figure 6 This is a schematic diagram of the triangular block structure of the present invention; Figure 7 This is a schematic diagram of the adjustment part structure of the present invention; Figure 8 This is a schematic diagram of the screw structure of the present invention; Figure 9 This is a schematic diagram of the feeding component structure of the present invention; Figure 10 This is a schematic diagram of the bushing structure of the present invention; Figure 11 This is a schematic diagram of the maintenance component structure of the present invention; Figure 12 This is a schematic diagram of the brush plate structure of the present invention.

[0021] The reference numerals in the attached drawings are explained as follows: 1. Operating table; 2. Striking assembly; 21. Mounting bracket; 22. Ball bearing slider; 23. Slide plate; 24. Counterweight; 25. Conical shaft; 26. Ball screw; 27. Mounting plate; 28. Triangular block; 29. ​​Dial shaft; 210. Sliding shaft; 211. Groove plate; 212. Motor; 3. Adjustment unit; 31. Adjustment plate; 32. Slide groove; 33. Nut seat; 34. Screw; 35. Short shaft; 4. Feeding assembly; 41. Rotating shaft; 42. Cross wheel; 43. First slide rail; 44. Second slide rail; 45. Bushing; 46. First inclined block; 47. Second inclined block; 48. Column; 49. Sliding column; 5. Maintenance assembly; 51. Base; 52. Gear shaft; 53. Cleaning cotton; 54. Polished rod; 55. Brush plate; 56. Rack. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] Example 1 Please see Figure 1 - Figure 12A hardness testing system for hot-crack resistant steel rolls in rough rolling of strip steel includes: an operating table 1; and a striking assembly 2 for hardness testing by striking. The striking assembly 2 includes a mounting frame 21, which is fixedly mounted on the operating table 1. A ball bearing slider 22 and a sliding plate 23 are slidably mounted on the mounting frame 21, with the ball bearing slider 22 and the sliding plate 23 fixedly connected. A ball screw 26 is rotatably mounted on the mounting frame 21. A tapered shaft 25 is slidably connected through the sliding plate 23, and a counterweight 24 is fixedly connected to the top of the tapered shaft 25. A mounting plate 27 is fixedly connected to platform 1. Multiple triangular blocks 28 are slidably connected to the mounting plate 27. A motor 212 is mounted on mounting bracket 21. The output end of the motor 212 is connected to a ball screw 26. The ball screw 26 is threadedly connected to a ball slider 22. Balls are installed inside the connection between the ball screw 26 and the ball slider 22. After starting the motor 212, the motor 212 drives the ball screw 26 to rotate. When the ball screw 26 rotates, it drives the ball slider 22 and the sliding plate 23 to move backward. When the sliding plate 23 moves to the rearmost position, the motor... Machine 212 rotates in reverse, and ball screw 26 drives slide plate 23 forward and reset via ball slider 22. A detector is installed on the operating table 1, and a probe is installed on the bottom surface of slide plate 23. Multiple triangular blocks 28 are arranged in a linear array. A pivot 29 is slidably connected through the weight 24. During its movement, pivot 29 sequentially contacts multiple triangular blocks 28. As pivot 210 contacts multiple triangular blocks 28, the weight 24 and conical shaft 25 continuously move upward and then downward. During the downward movement, the conical shaft 25 strikes the surface of the roll, forming an indentation. After the conical shaft 25 leaves the indentation, the probe detects the indentation depth and transmits the data to the detector. The detector calculates the hardness data. As the conical shaft 25 moves from front to back, it forms multiple indentations. The detector calculates and records the hardness data at multiple test points on the roll, thus achieving the technical effect of automatically performing multi-point testing of the roll in a single hardness test. This reduces the need for operators to continuously adjust the roll position during the testing process and improves testing efficiency.

[0024] Furthermore, a sliding shaft 210 is fixedly connected to the pivot 29, and a grooved plate 211 is fixedly installed on the mounting bracket 21. The grooved plate 211 has parallelogram-shaped grooves, and the sliding shaft 210 is slidably connected to these grooves. The parallelogram-shaped grooves are divided into a left straight groove, a right straight groove, a front inclined groove, and a rear inclined groove (e.g.,...). Figure 5 As shown, the slide shaft 210 can move left and right once during the back-and-forth reciprocating movement. When the slide shaft 210 moves left and right, it can drive the dial shaft 29 to move left and right synchronously. Therefore, when the dial shaft 29 moves backward, the dial shaft 29 can contact multiple triangular blocks 28. However, when the dial shaft 29 moves forward to reset, because the dial shaft 29 moves to the left a certain distance, the dial shaft 29 does not contact multiple triangular blocks 28 when it moves forward.

[0025] Furthermore, the striking assembly 2 also includes an adjustment part 3, which includes an adjustment plate 31. The adjustment plate 31 is slidably connected to the bottom surface of the mounting plate 27. The adjustment plate 31 is provided with multiple sliding grooves 32. A nut seat 33 is fixedly connected to the adjustment plate 31. A screw 34 is rotatably mounted on the mounting plate 27. The screw 34 is threadedly connected to the nut seat 33. A handle is provided on the screw 34. When the operator rotates the screw 34 by the handle, it can drive the nut seat 33 to move left or right. When the nut seat 33 moves left or right, it drives the adjustment plate 31 to move left and right synchronously. The bottom of multiple triangular blocks 28 is fixedly connected to short shafts 35 respectively. The multiple short shafts 35 are divided into... The slide 32 is connected to multiple sliding grooves 32. The middle slide 32 is a straight groove. The slide 32 on both sides of the straight groove has different inclinations. When the inclined slide 32 moves, it can drive the triangular block 28 to move forward or backward through the short shaft 35. When the adjusting plate 31 moves to the left, it can drive the multiple triangular blocks 28 to move closer to each other through the cooperation of multiple slide 32 and multiple short shafts 35. This achieves the technical effect of equal spacing of multiple triangular blocks 28. The operator can achieve the technical effect of equal spacing of multiple triangular blocks 28 by rotating the screw 34, thereby adjusting the distance between the roll detection points and meeting different hardness detection requirements.

[0026] In addition, there is a feeding assembly 4 for automatic feeding; the feeding assembly 4 includes a rotating shaft 41, which is rotatably mounted on the mounting frame 21. Two cross wheels 42 are fixedly connected to the outer wall of the rotating shaft 41. A first slide rail 43 and a second slide rail 44 are fixedly mounted on the operating table 1. The cross wheels 42 are located between the first slide rail 43 and the second slide rail 44. Multiple rollers are placed side by side on the first slide rail 43, with the leftmost roller abutting against the two cross wheels 42. At this time, the operator places another roller on the two cross wheels 42 as the first detection roller. This roller is located below the tapered shaft 25.

[0027] In addition, a bushing 45 is fixedly connected to the outer wall of the rotating shaft 41. A set of first inclined blocks 46 and a set of second inclined blocks 47 are fixedly connected to the bushing 45. A column 48 is fixedly connected to the bottom surface of the ball block slider 22. A sliding column 49 is fixedly connected to the column 48. There are four first inclined blocks 46 arranged in a circular array. There are also four second inclined blocks 47 arranged in a circular array. During the movement, the sliding column 49 slides in contact with one of the first inclined blocks 46 and one of the second inclined blocks 47. Each time the sliding column 49 moves backward, it can contact one of the first inclined blocks 46 and drive the bushing 45 to rotate. At this time, one of the second inclined blocks 47 moves onto the trajectory of the sliding column 49. Each time the sliding column 49 moves forward, it can contact one of the second inclined blocks 47 and drive the bushing 45 to rotate, so that the other first inclined block 46 moves onto the trajectory of the sliding column 49. The bushing 45 rotates a total of 90 degrees in two rotations. When the bushing 45 rotates, it drives the rotating shaft 41 to rotate 90 degrees synchronously, so that the rotating shaft 41 drives the two cross wheels 42 to rotate 90 degrees counterclockwise. During the rotation of the cross wheels 42, the roll that has completed the hardness test is placed onto the second slide rail 44. The roll rolls through the second slide rail 44 to the next process, achieving the technical effect of automatic loading and unloading and improving the level of automation.

[0028] It is worth noting that the mounting frame 21 is equipped with a maintenance component 5, which includes a base 51. The base 51 is fixedly connected to the mounting frame 21. A gear shaft 52 is rotatably connected to the base 51. A cleaning cotton 53 is fixedly connected to the gear shaft 52. The cleaning cotton 53 is located on the movement trajectory of the conical shaft 25. After the conical shaft 25 completes the indentation operation, it can clean the bottom end of the conical shaft 25 by contacting the cleaning cotton 53, so as to maintain the cleanliness of the bottom end of the conical shaft 25 and prevent the bottom end of the conical shaft 25 from accumulating too many impurities after long-term use, thereby affecting the accuracy of indentation formation.

[0029] It is worth noting that the maintenance component 5 also includes two polished rods 54, both of which are fixedly mounted on the mounting bracket 21. Brush plates 55 are slidably connected to the two polished rods 54. Springs are provided on the outer walls of the polished rods 54, with one end of each spring connected to the mounting bracket 21 and the other end connected to the brush plate 55. When the brush plate 55 moves, it contacts the top surface of the cleaning cotton 53. The brush plate 55 is located on the movement trajectory of the conical shaft 25. A rack 56 is fixedly connected to the brush plate 55, and the rack 56 meshes with the gear shaft 52. After the conical shaft 25 moves backward until it is above the roller, it continues to move backward and contacts the brush plate 55, pushing the brush plate 55 backward. When the brush plate 55 moves backward, it drives the rack 56 to move backward. When the rack 56 moves back and forth, it drives the cleaning cotton 53 to rotate through the gear shaft 52. The rotation of the cleaning cotton 53 increases the contact area with the bottom of the conical shaft 25, thereby optimizing the cleaning effect. When the brush plate 55 moves backward, it contacts the cleaning cotton 53, thereby brushing off the impurities attached to the surface of the cleaning cotton 53 and maintaining the cleanliness of the cleaning cotton 53.

[0030] Example 2 A method for testing the hardness of a strip rough-rolled heat-crack resistant steel roll, using the hardness testing system for a strip rough-rolled heat-crack resistant steel roll described in Example 1, further includes the following steps: Step 1: Inspection preparation. Determine the material and specifications of the rolls, clean and polish the inspection surface with sandpaper or similar materials to remove impurities and ensure that the roll surface is flat. Step 2: Equipment calibration, debugging of the testing instrument, and calibration using a standard block; Step 3: Plan the layout of the detection points. According to the roll structure and usage requirements, plan the detection points on the roll surface and adjust the spacing between the detection points using the adjustment unit 3. Step 4: Testing Implementation. Place multiple rolls in the first slide rail 43, start the motor 212 and perform testing. The multiple rolls are tested for hardness in sequence, and the testing instrument records the hardness value at each point. Step 5: The testing instrument calculates the mean and standard deviation of the hardness data for each roll, compares it with the standard to determine whether it is qualified, analyzes the cause of abnormal data and re-inspects; Step Six: Issue the results, determine the quality according to the standards, and issue a report including roll information, testing methods, data and determination results, with equipment calibration records attached.

[0031] Using the above structure, the working principle of this case is as follows: Figure 1Using the directional reference, multiple rollers are placed side-by-side on the first slide rail 43, with the leftmost roller abutting against two cross wheels 42. Then, another roller is placed on the two cross wheels 42 as the first inspection roller, located below the tapered shaft 25. The ball bearing slider 22 is initially at the front. After starting the motor 212, the motor 212 drives the ball screw 26 to rotate. As the ball screw 26 rotates, it moves the ball bearing slider 22 backward. The movement of the ball bearing slider 22 causes the slide plate 23 to move synchronously. When the slide plate 23 reaches the rearmost position, the motor 212 rotates in the opposite direction, and the ball screw 26, through the ball bearing slider 22, moves the slide plate 23 forward to reset. One back-and-forth movement of the slide plate 23 constitutes one inspection operation. The movement of the slide plate 23 causes the tapered shaft 25 to move synchronously, which in turn causes the counterweight 24 to move synchronously. As the tapered shaft 25 moves backward, the sliding shaft 210 on the counterweight 24 sequentially contacts multiple three-wheeled rollers from front to back. When the inclined surface of the corner block 28 contacts the sliding shaft 210, the sliding shaft 210 slides upward along the inclined surface, causing the sliding shaft 210 to drive the weight 24 and the conical shaft 25 to move upward. After the sliding shaft 210 leaves the inclined surface, the weight 24 drives the conical shaft 25 and the sliding shaft 210 downward by gravity. Therefore, during the process of the sliding shaft 210 contacting multiple corner blocks 28 in sequence, the weight 24 and the conical shaft 25 can continuously move upward and then fall. During the fall of the conical shaft 25, it will strike the surface of the roll, thereby forming an indentation. After the conical shaft 25 leaves the indentation, the probe can detect the indentation depth and transmit the data to the detector. The detector can calculate the hardness data. The conical shaft 25 forms multiple indentations during the process of moving from front to back. The detector can calculate and record the hardness data of multiple detection points of the roll. After the conical shaft 25 moves to the back, the slide plate 23 begins to move forward and reset, causing the conical shaft 25 to move forward and reset.

[0032] As the dial shaft 29 moves, it drives the sliding shaft 210 to move synchronously. During the back-and-forth movement of the sliding shaft 210, it slides within the parallelogram-shaped groove of the slot plate 211. The parallelogram-shaped groove is divided into a left straight groove, a right straight groove, a front inclined groove, and a rear inclined groove (e.g.,...). Figure 5As shown), when the sliding shaft 210 moves backward, it slides backward in the right straight groove. When the sliding shaft 210 is about to reach its rearward position, it enters the rear inclined groove, causing it to move to the left as it slides along the rear inclined groove. After reaching its rearward position, the sliding shaft 210 enters the left straight groove. When the sliding shaft 210 moves forward, it slides forward in the left straight groove. When it is about to reach its forward position, it enters the front inclined groove. While sliding in the front inclined groove, the sliding shaft 210 moves to the right. After reaching its forward position, it re-enters the right straight groove. The next time the sliding shaft 210 moves back and forth, it repeats the above process. Therefore, the sliding shaft 210 can perform one left-right reciprocating movement during the back-and-forth reciprocating movement. When the sliding shaft 210 moves left and right, it can drive the dial shaft 29 to move left and right synchronously. Therefore... When the dial 29 moves backward, it can contact multiple triangular blocks 28. However, when the dial 29 moves forward to reset, it does not contact multiple triangular blocks 28 because it has moved a certain distance to the left. After the dial 29, the counterweight 24, and the conical shaft 25 have moved forward to reset, one hardness test is completed. Through the setting of the striking component 2, the dial 29, the counterweight 24, and the conical shaft 25 can intermittently strike multiple indentations on the roll by cooperating with multiple triangular blocks 28. This achieves the technical effect of automatically performing multi-point testing on the roll during one hardness test, reducing the operation of constantly adjusting the roll position by the operator during the test and improving the testing efficiency.

[0033] A handle is provided on the screw 34. When the operator rotates the screw 34 by the handle, it can move the nut seat 33 to the left or right. When the nut seat 33 moves left or right, it drives the adjusting plate 31 to move left or right synchronously. The central slide groove 32 is a straight groove. The slide grooves 32 on both sides of the straight groove have different inclinations. When the inclined slide groove 32 moves, it can drive the triangular blocks 28 to move forward or backward through the short shaft 35. When the adjusting plate 31 moves to the left, it can drive the multiple triangular blocks 28 to move closer together through the cooperation of multiple slide grooves 32 and multiple short shafts 35, so that the multiple triangular blocks 28 can move closer together. The effect of the equal-spacing variable-pitch technology is that when multiple triangular blocks 28 move closer to each other, the distance between any two adjacent triangular blocks 28 decreases synchronously while maintaining the same distance. Conversely, moving the adjusting plate 31 to the right can move the multiple triangular blocks 28 further apart. The distance between adjacent triangular blocks 28 is equal to the distance between adjacent detection points on the roll. By setting the adjusting part 3, the operator can achieve the effect of equal-spacing variable-pitch technology of multiple triangular blocks 28 by rotating the screw 34, thereby adjusting the distance between the detection points on the roll and thus meeting different hardness detection requirements.

[0034] When the ball block slider 22 moves back and forth, it drives the sliding column 49 to move back and forth synchronously via the column 48. During the process of the tapered shaft 25 striking the roll, the rotating shaft 41 and the two cross wheels 42 remain stationary. After the striking is completed, the sliding column 49 continues to move backward. When the sliding column 49 is about to reach its rearward position, it contacts one of the first inclined blocks 46. During the backward movement of the sliding column 49, it drives the bushing 45 to rotate through the first inclined block 46. Then the sliding column 49 moves forward. During the forward movement of the sliding column 49, it contacts one of the second inclined blocks 47. The sliding column 49 drives the bushing 45 to rotate again through the second inclined block 47. The bushing 45 rotates a total of 90 degrees in two rotations. When the bushing 45 rotates, it drives the rotating shaft 41 to rotate 90 degrees synchronously, so that the rotating shaft 41 drives the two cross wheels 42 to rotate 90 degrees counterclockwise. During the rotation of the cross wheels 42, the roll that has completed the hardness test is placed onto the second slide rail 44. The roller rolls to the next process via the second slide rail 44. At the same time, the next roller to be tested rolls onto the cross wheel 42. After the cross wheel 42 rotates, the next roller to be tested moves to the testing position. Each time the slide column 49 moves backward, it can contact one of the first inclined blocks 46 and drive the bushing 45 to rotate. At this time, one of the second inclined blocks 47 moves onto the movement trajectory of the slide column 49. Each time the slide column 49 moves forward, it can contact one of the second inclined blocks 47 and drive the bushing 45 to rotate, so that the other first inclined block 46 moves onto the movement trajectory of the slide column 49. Through the setting of the feeding component 4, after the hardness test of one roller is completed, the rotating shaft 41 can automatically rotate 90 degrees to put the next roller to be tested into place. The roller that has completed the test leaves the operating table 1, achieving the technical effect of automatic loading and unloading and improving the level of automation.

[0035] After the conical shaft 25 moves backward until it is above the roller, it continues to move backward and contacts the brush plate 55, pushing the brush plate 55 backward. As the brush plate 55 moves backward, it drives the rack 56 backward. The rack 56, moving back and forth, drives the cleaning cotton 53 to rotate via the gear shaft 52. After contacting the brush plate 55, the conical shaft 25 contacts the cleaning cotton 53. The cleaning cotton 53 cleans the bottom end of the conical shaft 25 to maintain its cleanliness and prevent excessive impurities from accumulating on the bottom end after prolonged use, which would affect the accuracy of the indentation formation. The rotation of the cleaning cotton 53 increases the contact area with the bottom end of the conical shaft 25, thus... To optimize the cleaning effect, the brush plate 55 contacts the cleaning cotton 53 when it moves backward, thereby brushing off the impurities attached to the surface of the cleaning cotton 53 and maintaining the cleanliness of the cleaning cotton 53. When the conical shaft 25 moves forward and resets until it is separated from the brush plate 55, the brush plate 55 is reset by the elastic force of the springs on the two light rods 54. Through the setting of the maintenance component 5, after the conical shaft 25 completes the indentation operation, it can contact the cleaning cotton 53, allowing the cleaning cotton 53 to clean the bottom of the conical shaft 25, so as to maintain the cleanliness of the bottom of the conical shaft 25 and prevent the bottom of the conical shaft 25 from accumulating too many impurities after long-term use, which would affect the accuracy of the indentation formation.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A hardness testing system for hot-crack resistant steel rolls in rough rolling of strip steel, characterized in that, include: Control panel (1); The striking component (2) is used to perform hardness testing by striking. Feeding component (4) is used for automatic feeding; The striking assembly (2) includes a mounting bracket (21), which is fixedly mounted on the operating table (1). A ball bearing slider (22) and a slide plate (23) are slidably mounted on the mounting bracket (21). The ball bearing slider (22) and the slide plate (23) are fixedly connected. A ball screw (26) is rotatably mounted on the mounting bracket (21). A conical shaft (25) is slidably connected through the slide plate (23). A counterweight (24) is fixedly connected to the top of the conical shaft (25). A mounting plate (27) is fixedly connected to the operating table (1). Multiple triangular blocks (28) are slidably connected to the mounting plate (27).

2. The hardness testing system for a strip roughing anti-heat cracking steel roll according to claim 1, characterized in that: A motor (212) is installed on the mounting bracket (21). The output end of the motor (212) is connected to a ball screw (26). The ball screw (26) is threadedly connected to a ball slider (22). Balls are provided inside the connection between the ball screw (26) and the ball slider (22). A detector is provided on the operating table (1). A probe is provided on the bottom surface of the slide plate (23).

3. The hardness testing system for a strip roughing anti-heat cracking steel roll according to claim 2, characterized in that: The multiple triangular blocks (28) are arranged in a linear array, and a pivot (29) is slidably connected through the weight (24). During the movement, the pivot (29) slides and contacts the multiple triangular blocks (28) in sequence.

4. The hardness testing system for a strip roughing anti-thermal cracking steel roll according to claim 3, characterized in that: A sliding shaft (210) is fixedly connected to the dial (29), and a groove plate (211) is fixedly installed on the mounting bracket (21). A parallelogram groove is provided on the groove plate (211), and the sliding shaft (210) is slidably connected to the parallelogram groove.

5. The hardness testing system for a strip roughing anti-thermal cracking steel roll according to claim 4, characterized in that: The striking assembly (2) further includes an adjustment part (3), which includes an adjustment plate (31). The adjustment plate (31) is slidably connected to the bottom surface of the mounting plate (27). The adjustment plate (31) is provided with multiple sliding grooves (32). A nut seat (33) is fixedly connected to the adjustment plate (31). A screw (34) is rotatably installed on the mounting plate (27). The screw (34) is threadedly connected to the nut seat (33). Short shafts (35) are fixedly connected to the bottom of the multiple triangular blocks (28). The multiple short shafts (35) are slidably connected to the multiple sliding grooves (32).

6. The hardness testing system for a strip roughing anti-thermal cracking steel roll according to claim 2, characterized in that: The feeding assembly (4) includes a rotating shaft (41), which is rotatably mounted on the mounting frame (21). Two cross wheels (42) are fixedly connected to the outer wall of the rotating shaft (41). A first slide rail (43) and a second slide rail (44) are fixedly mounted on the operating table (1). The cross wheels (42) are located between the first slide rail (43) and the second slide rail (44).

7. The hardness testing system for a strip roughing anti-heat cracking steel roll according to claim 6, characterized in that: A bushing (45) is fixedly connected to the outer wall of the rotating shaft (41). A set of first inclined blocks (46) and a set of second inclined blocks (47) are fixedly connected to the bushing (45). A column (48) is fixedly connected to the bottom surface of the ball slider (22). A sliding column (49) is fixedly connected to the column (48). The set of first inclined blocks (46) consists of four blocks, which are arranged in a circular array. The set of second inclined blocks (47) consists of four blocks, which are arranged in a circular array. The sliding column (49) slides in contact with one of the first inclined blocks (46) and one of the second inclined blocks (47) during the movement.

8. The hardness testing system for a strip roughing anti-thermal cracking steel roll according to claim 2, characterized in that: The mounting bracket (21) is provided with a maintenance component (5), which includes a base (51) fixedly connected to the mounting bracket (21). A gear shaft (52) is rotatably connected to the base (51), and a cleaning cotton (53) is fixedly connected to the gear shaft (52). The cleaning cotton (53) is located on the movement trajectory of the conical shaft (25).

9. The hardness testing system for a strip roughing anti-heat cracking steel roll according to claim 8, characterized in that: The maintenance component (5) also includes two light rods (54), both of which are fixedly mounted on the mounting bracket (21). Brush plates (55) are slidably connected to the two light rods (54). Springs are provided on the outer wall of the light rods (54). One end of each spring is connected to the mounting bracket (21), and the other end of each spring is connected to the brush plate (55). When the brush plate (55) moves, it contacts the top surface of the cleaning cotton (53). The brush plate (55) is located on the movement trajectory of the conical shaft (25). A rack (56) is fixedly connected to the brush plate (55), and the rack (56) meshes with the gear shaft (52).

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