Roller groove detection device and detection method

Abstract

The present application belongs to the technical field of steel rolling auxiliary equipment, and discloses a roll pass detection device and a detection method, the roll pass detection device comprising: a measurement template arranged at a pass between an upper roll and a lower roll, for detecting the pass, and a connecting handle being connected and installed at one end surface of the measurement template; the present application converts the extrusion of the pass on the rotating rod into the horizontal displacement of the moving plate through the cooperation of the pressure sensor, the conversion structure and the pointer display plate, and further converts it into the rotation of the pointer and the scale indication of the display plate, and the pressure sensor can accurately capture the pressure change and trigger the alarm, the detection method of "data driving" upgrades the detection of the pass size from the vague "hand feeling" to the accurate numerical value and the sound and light alarm, significantly improves the detection accuracy, and completely gets rid of the interference of artificial subjective judgment, realizes the objectivity and digitization of the detection process.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel rolling auxiliary equipment, and particularly relates to a roll hole type detection device and a detection method. BACKGROUND

[0002] In profile rolling production, the size precision of the roll hole type directly determines the shape and quality of the final product. In the long-term use of the roll, the size of the hole type surface will change due to wear, thermal fatigue and other reasons, so it is necessary to detect and repair the hole type regularly.

[0003] At present, a detection method based on a measuring template is mostly used. When detecting, the measuring template is inserted into the hole type formed by the upper and lower rolls, the motor is started to drive the roll to rotate at a low speed, and the workman manually holds and pushes the measuring template to move along the hole type axis. In this process, the workman subjectively judges whether the hole type size meets the preset standard by sensing the different pushing force or friction force of the template by hand. The judgment basis is that if the hole type meets the standard, the pushing force is moderate; if the hole type is enlarged due to wear, the pushing force is reduced; if the hole type is reduced due to foreign matter adhesion or indentation, the pushing force is sharply increased or even the template is stuck. SUMMARY

[0004] The present application aims at the problem in the prior art that the workman manually holds and pushes the measuring template to move along the hole type axis, and subjectively judges whether the hole type size meets the preset standard by sensing the different pushing force or friction force of the template by hand. The judgment basis is that if the hole type meets the standard, the pushing force is moderate; if the hole type is enlarged due to wear, the pushing force is reduced; if the hole type is reduced due to foreign matter adhesion or indentation, the pushing force is sharply increased or even the template is stuck.

[0005] A roll hole type detection device, comprising a measuring template arranged at a hole type between an upper roll and a lower roll, used for detecting the hole type, and a connecting handle is arranged on one end surface of the measuring template by clamping and installing.

[0006] The hole type detection assembly comprises a moving plate, a telescopic piece, a pressure type alarm structure, a conversion structure, a display plate, a pointer and a rotating rod.

[0007] The movable plate is horizontally movably connected inside the measuring template. Two telescopic components are fixedly connected between the end face of the movable plate near the connecting handle and the inside of the measuring template. The rotating rod is rotatably connected to the movable plate. The telescopic components are used to provide pre-tightening force to the movable plate and keep the rotating rod in contact with the hole. A pressure alarm structure is installed at the end of the measuring template away from the telescopic components. The pressure alarm structure is connected to the movable plate and is used to detect the pressure on the movable plate. The conversion structure is located inside the measuring template and connected to the movable plate. It is used to convert the horizontal movement of the movable plate into rotational movement. The display panel is connected to the end face of the measuring template near the connecting handle. The pointer is connected to the conversion structure and is used to visually display the displacement of the movable plate.

[0008] As a preferred embodiment of the above technical solution, the measuring template is symmetrically fixed with support blocks on both sides of the top and bottom ends, and the same limiting roller is rotatably connected between two adjacent support blocks.

[0009] As a preferred embodiment of the above technical solution, the pressure alarm structure includes a pressure sensor and an alarm. The movable end of the pressure sensor is fixedly installed on the end face of the moving plate away from the telescopic component, the fixed end of the pressure sensor is fixedly installed inside the measuring template, and the alarm is embedded in the side of the measuring template.

[0010] As a preferred embodiment of the above technical solution, the conversion structure includes an L-shaped sawtooth strip, a positioning gear, a speed-changing gear, a moving rod, a column, and a rotating sleeve;

[0011] The movable plate is configured as two, and an L-shaped serrated strip is fixedly installed on the opposite surface of the two movable plates. A positioning gear is meshed with the outer side of the L-shaped serrated strip, a speed-changing gear is meshed with the outer side of the positioning gear, and a toothed movable rod is meshed with the outer side of the speed-changing gear. A column is embedded in the movable rod, and a rotating sleeve is sleeved on the outer surface of the column.

[0012] As a preferred embodiment of the above technical solution, T-shaped wheels are welded to the bottom ends of both the positioning gear and the speed-changing gear. The T-shaped wheels are rotatably connected to the inside of the measuring template. A protrusion is welded to the bottom end of the moving rod. A sliding groove is provided on the outer side of the protrusion inside the measuring template. A spiral inclined groove is provided on the outer surface of the rotating sleeve. The column is located inside the spiral inclined groove.

[0013] As a preferred embodiment of the above technical solution, a connecting shaft is snapped into the inside of the rotating sleeve, the connecting shaft is rotatably connected to the inside of the measuring template, and a concave cover is snapped into the outer surface of the connecting shaft.

[0014] As a preferred embodiment of the above technical solution, the display panel is snapped onto the outside of the connecting shaft and located inside the concave cover. The display panel has equidistant scale lines inside and numerical values ​​are located outside the scale lines. The pointer is snapped onto the outside of the connecting shaft via a bearing.

[0015] As a preferred embodiment of the above technical solution, a fixing plate is fixedly installed on the outer surface of the connecting shaft, a damping pad is provided on the end face of the fixing plate near the pointer, and a nut is threadedly connected to the end face of the connecting shaft away from the fixing plate.

[0016] The present invention also provides a detection method using the above-mentioned roll pass detection device, comprising the following steps:

[0017] S1. Installation and positioning: Hold the measuring template with the connecting handle and place it in the die between the upper and lower rollers, so that the limiting roller contacts the roller surface and the rotating rod contacts the die surface, and maintains the contact state under the pre-tightening force of the telescopic member;

[0018] S2, Drive Detection: Start the roll motor to drive the upper roll and lower roll to rotate relative to each other at a low speed. Through the friction between the roll and the limiting roll and the rotating rod, the limiting roll and the rotating rod are driven to rotate.

[0019] S3. Anomaly Detection and Signal Conversion:

[0020] When the orifice size meets the standard, the moving plate maintains its initial balanced position, the pointer points to zero, and the pressure value monitored by the pressure sensor is within the preset range;

[0021] When there is a local protrusion in the hole, the local protrusion squeezes the rotating rod, pushing the moving plate to overcome the preload of the telescopic member and move horizontally; the displacement of the moving plate is converted into the rotational motion of the pointer through the conversion structure, thereby displaying the offset scale value on the display panel; at the same time, the displacement of the moving plate causes a change in the pressure on the pressure sensor.

[0022] When the pressure value detected by the pressure sensor exceeds a preset threshold, the alarm is triggered to issue an alarm.

[0023] S4. Result Interpretation: By observing the pointer's indication value on the display panel and checking whether the alarm sounds, the staff determines whether the hole size at the current detection position is qualified and records any abnormal locations.

[0024] S5. Repositioning Inspection: After the inspection dimensions are qualified, the staff holds the measuring template with the connecting handle and moves it to the uninspected position of the hole between the upper and lower rolls for inspection.

[0025] The beneficial effects of this invention are as follows:

[0026] (1) This invention uses the combination of pressure sensor, conversion structure and pointer display panel to convert the compression of the hole on the rotating rod into the horizontal displacement of the moving plate, and further into the rotation of the pointer and the scale indication of the display panel. At the same time, the pressure sensor can accurately capture pressure changes and trigger an alarm. This "data-driven" detection method upgrades the detection of hole size from vague "feel" to precise numerical value and sound and light alarm, which significantly improves the detection accuracy and completely eliminates the interference of human subjective judgment, realizing the objectification and digitization of the detection process.

[0027] (2) During the test, the roller rotates at low speed and the device can automatically detect different positions of the hole shape without the need for frequent manual adjustment or repeated sensing. The real-time indication of the pointer on the display panel allows the staff to intuitively see the changes in the hole shape size. The alarm function of the pressure alarm structure can promptly remind when the hole shape is abnormal (pressure exceeds the threshold). The combination of the two makes the test process both efficient (continuous test) and has a good visualization effect. The staff can quickly and clearly grasp the hole shape status and improve the test efficiency.

[0028] (3) The device can not only perform comprehensive inspection of the entire die pattern, but also inspect the repaired area separately after the wear of the roll is repaired. Simply place the measuring template at the die pattern position formed at the repaired area, and use the detection structure of the device to accurately detect whether the repaired die pattern meets the standard. It does not require the use of other large or complex equipment, and is highly targeted, providing a convenient and effective means for controlling the quality of roll repair. Attached Figure Description

[0029] Figure 1 The diagram shown is a structural schematic of a roll pass detection device and detection method according to Embodiment 1;

[0030] Figure 2 The image shown is a front view of a roll pass detection device and detection method according to Embodiment 1;

[0031] Figure 3 The diagram shown is a schematic of the installation structure of the movable plate in Embodiment 1;

[0032] Figure 4 The diagram shown is a schematic diagram of the installation structure of the telescopic component in Embodiment 1;

[0033] Figure 5 The diagram shown is a schematic diagram of the conversion structure in Embodiment 1;

[0034] Figure 6 The diagram shown is a schematic of the installation structure of the connecting shaft in Embodiment 1.

[0035] In the diagram: 1. Measuring template; 2. Connecting handle; 3. Support block; 4. Limiting roller; 51. Pressure sensor; 52. Moving plate; 53. Telescopic component; 54. Conversion structure; 541. L-shaped serrated strip; 542. Positioning gear; 543. Speed-changing gear; 544. Moving rod; 545. Column; 546. Rotating sleeve; 55. Connecting shaft; 56. Concave cover; 57. Display panel; 59. Pointer; 510. Fixing plate; 511. Damping pad; 512. Rotating rod. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0037] Example 1

[0038] This invention provides a roll pass detection device, such as... Figures 1 to 6 As shown, it includes: a measuring template 1 is set at the hole between the upper and lower rolls for detecting the hole shape; a connecting handle 2 is snapped onto one end face of the measuring template 1; support blocks 3 are symmetrically fixed on both sides of the top and bottom ends of the measuring template 1; the same limiting roller 4 is rotatably connected between two adjacent support blocks 3 through a bushing; the limiting roller 4 is symmetrically arranged on the outside of the upper and lower rolls along the vertical center line of the upper and lower rolls.

[0039] The aperture detection assembly includes: a movable plate 52, a telescopic component 53, a pressure alarm structure, a conversion structure 54, a display panel 57, a pointer 59, and a rotating rod 512;

[0040] The movable plate 52 is horizontally movably connected to the inside of the measuring template 1. Two telescopic components 53 (specifically spring telescopic rods) are fixedly connected between the end face of the movable plate 52 near the connecting handle 2 and the inside of the measuring template 1. The rotating rod 512 is rotatably connected to the movable plate 52, located in the direction of roller rotation, and is in contact with the side away from the telescopic components 53. The telescopic components 53 are used to provide pre-tightening force to the movable plate 52 and keep the rotating rod 512 in contact with the die. A pressure alarm structure is installed at the end of the measuring template 1 away from the telescopic components 53. The pressure alarm structure is connected to the movable plate 52 and is used to detect the pressure on the movable plate 52. The conversion structure 54 is located inside the measuring template 1 and is connected to the movable plate 52. It is used to convert the horizontal movement of the movable plate 52 into rotational movement. The display plate 57 is connected to the end face of the measuring template 1 near the connecting handle 2. The pointer 59 is connected to the conversion structure 54 and is used to visually display the displacement of the movable plate 52.

[0041] Workers manually hold and push the measuring template, moving it along the hole axis. During this process, they subjectively judge whether the hole size meets the preset standard by sensing the different pushing or frictional forces acting on the template. The judgment criteria are as follows: if the hole meets the standard, the pushing force is moderate; if the hole becomes larger due to wear, the pushing force becomes smaller; if the hole becomes smaller due to foreign objects sticking or dents, the pushing force increases sharply or even jams the template.

[0042] In this application, the detection method is upgraded from the traditional and vague "tactile perception" to the modern and precise "data-driven" by using a hole-type detection component. This solves the core pain points of the original method, such as subjectivity, lack of quantification, and poor reliability, and achieves the goal of objectification, digitization, visualization, and efficiency of the detection process.

[0043] In use, the measuring template 1 is held by the connecting handle 2 and placed in the die between the upper and lower rollers, so that the limiting roller 4 contacts the roller surface and the rotating rod 512 contacts the die surface. Under the pre-tightening force of the telescopic member 53, the contact state is maintained. Then, the roller motor is started to drive the upper and lower rollers to rotate at a low speed relative to each other. Through the friction between the rollers, the limiting roller 4 and the rotating rod 512, the two are driven to rotate synchronously with the rollers at a low speed, ensuring the dynamic contact detection between the rotating rod 512 and the die surface. When the upper and lower rollers rotate and there is no wear on the die surface (when the die size meets the standard), the moving plate 52 maintains the initial balance position, the pointer 59 points to zero, and the pressure value monitored by the pressure alarm structure is within the preset range.

[0044] When there is a local protrusion in the hole, the local protrusion squeezes the rotating rod 512, pushing the moving plate 52 to overcome the pre-tightening force of the telescopic member 53 and move horizontally. The displacement of the moving plate 52 is converted into the rotational motion of the pointer 59 through the conversion structure 54, thereby displaying the offset scale value on the display panel 57. At the same time, the displacement of the moving plate 52 causes the pressure on the pressure alarm structure to change.

[0045] When the pressure value detected by the pressure alarm structure exceeds the preset threshold, an alarm is issued. At the same time, the staff observes the indication value of pointer 59 on display panel 57 and determines whether the hole size at the current detection position is qualified based on whether the alarm is triggered, and records the abnormal position.

[0046] To achieve the effect described above, where the pressure alarm structure triggers an alarm when the pressure exceeds a predetermined range, the following solution is proposed: Figures 2 to 3As shown, the pressure alarm structure includes a pressure sensor 51 and an alarm. The movable end of the pressure sensor 51 (specifically a tension / compression sensor) is fixedly installed on the end face of the movable plate 52 away from the telescopic member 53. The fixed end of the pressure sensor 51 is fixedly installed inside the measuring template 1. An alarm is embedded in the side of the measuring template 1. The pressure sensor 51 is electrically connected to the alarm.

[0047] When in use, the movement of the moving plate 52 causes the pressure sensor 51 to be compressed or stretched, which causes the pressure sensor 51 to operate. When the pressure sensor 51 exceeds the preset range, the alarm is connected to the power and an alarm is generated.

[0048] To achieve the conversion of the linear movement of the moving plate 52 into the rotation of the pointer 59 in the above example, the following solution is proposed: Figures 4 to 5 As shown, the conversion structure 54 includes an L-shaped serrated bar 541, a positioning gear 542, a speed-changing gear 543, a moving rod 544, a column 545, and a rotating sleeve 546.

[0049] L-shaped serrated strips 541 are fixedly installed at the bottom of each movable plate 52 (two L-shaped serrated strips 541 are set for each movable plate 52, and the two L-shaped serrated strips 541 are installed on the opposite surfaces of the two movable plates 52). A positioning gear 542 is meshed with the outer side of the L-shaped serrated strips 541. A speed-changing gear 543 is meshed with the outer side of the positioning gear 542. A toothed moving rod 544 is meshed with the outer side of the speed-changing gear 543. A column 545 is embedded inside the moving rod 544. A rotating sleeve 546 is sleeved on the outer surface of the column 545. A connecting shaft 55 is snapped into the rotating sleeve 546. The connecting shaft 55 is rotatably connected to the inside of the measuring template 1. The pointer 59 is snapped into the outside of the connecting shaft 55 through a bearing.

[0050] In use, the movement of the moving plate 52 causes the L-shaped sawtooth 541 to move. When the L-shaped sawtooth 541 moves, it drives the positioning gear 542 to rotate. When the positioning gear 542 rotates, it drives the speed-changing gear 543 to rotate. When the speed-changing gear 543 rotates, it drives the moving rod 544 to move. When the moving rod 544 moves, it drives the column 545 to move. When the column 545 moves, it drives the rotating sleeve 546 to rotate. At this time, the rotating sleeve 546 drives the pointer 59 to rotate through the connecting shaft 55. The bearing allows the pointer 59 to swing along the outside of the connecting shaft 55.

[0051] Furthermore, in order to enable the rotating sleeve 546 to rotate when the column 545 moves, the following solution is provided: T-shaped wheels are welded to the bottom ends of the positioning gear 542 and the speed-changing gear 543. The T-shaped wheels are rotatably connected to the inside of the measuring template 1. A protrusion is welded to the bottom end of the moving rod 544. A sliding groove is opened on the outer side of the corresponding protrusion inside the measuring template 1. A spiral inclined groove is opened on the outer surface of the rotating sleeve 546. The column 545 is located inside the spiral inclined groove.

[0052] The T-shaped wheel enables the positioning gear 542 and the speed-changing gear 543 to rotate but not to move. Meanwhile, the cooperation of the protrusion and the slide groove enables the moving rod 544 to move but not to deviate. Furthermore, the spiral inclined groove converts the linear movement of the column 545 into rotational force.

[0053] Furthermore, regarding how to keep the position of pointer 59 fixed and perpendicular to the ground, the following solutions are proposed: Figures 4 to 6 As shown, a concave cover 56 is snapped onto the outer surface of the connecting shaft 55, and a display panel 57 is snapped onto the outside of the connecting shaft 55 and located inside the concave cover 56. The display panel 57 has equidistant scale lines inside and numerical values ​​outside the scale lines. A fixing plate 510 is fixedly installed on the outer surface of the connecting shaft 55. A damping pad 511 is provided on the end face of the fixing plate 510 near the pointer 59. A nut is threaded onto the end face of the connecting shaft 55 away from the fixing plate 510.

[0054] The pointer 59 can swing freely under the action of the bearing. At this time, the operator squeezes the fixing plate 510 with the nut, so that the damping pad 511 of the fixing plate 510 enters the outside of the pointer 59, thereby providing damping force to the pointer 59 so that it can indicate stably when there is no external force intervention.

[0055] The present invention also provides a detection method using the above-mentioned roll pass detection device, comprising the following steps:

[0056] S1. Installation and positioning: Hold the measuring template 1 by connecting handle 2 and place it in the hole between the upper and lower rollers, so that the limiting roller 4 contacts the roller surface, the rotating rod 512 contacts the hole surface, and the contact state is maintained under the pre-tightening force of the telescopic member 53.

[0057] S2, Drive detection: Start the roll motor to drive the upper roll and the lower roll to rotate at low speed relative to each other. Through the friction between the roll and the limit roll 4 and the rotating rod 512, the limit roll 4 and the rotating rod 512 are driven to rotate.

[0058] S3. Anomaly Detection and Signal Conversion:

[0059] When the orifice size meets the standard, the moving plate 52 maintains the initial balanced position, the pointer 59 points to zero, and the pressure value monitored by the pressure sensor 51 is within the preset range.

[0060] When there is a local protrusion in the hole, the local protrusion squeezes the rotating rod 512, pushing the moving plate 52 to overcome the pre-tightening force of the telescopic member 53 and move horizontally; the displacement of the moving plate 52 is converted into the rotational motion of the pointer 59 through the conversion structure 54, thereby displaying the offset scale value on the display plate 57; at the same time, the displacement of the moving plate 52 causes its pressure on the pressure sensor 51 to change.

[0061] When the pressure value detected by pressure sensor 51 exceeds the preset threshold, the alarm is triggered and an alarm is issued;

[0062] S4. Result Interpretation: By observing the value indicated by pointer 59 on display panel 57 and checking whether the alarm sounds, the staff determines whether the hole size at the current detection position is qualified and records any abnormal positions.

[0063] S5. Repositioning Inspection: After the inspection dimensions are qualified, the staff holds the measuring template 1 through the connecting handle 2 and moves it to the uninspected position of the hole between the upper and lower rolls for inspection.

[0064] Working principle: The operator holds the measuring template 1 through the connecting handle 2 and accurately places it in the hole between the upper and lower rolls. At this time, the limiting roller 4 contacts the outer surface of the roll (the limiting roller 4 is symmetrically arranged on the outside of the upper and lower rolls along the vertical center line of the upper and lower rolls), and plays a rolling support and guiding role. At this time, the center line of the measuring template 1 is on the vertical line of the upper and lower rolls.

[0065] Then, under the pre-tightening force of the telescopic member 53, the rotating rod 512 maintains contact with the inner surface of the die (the contraction of the telescopic member 53 drives the moving plate 52 to move, and when the moving plate 52 moves, it drives the rotating rod 512 to move and then it comes into contact with the outer side of the upper and lower rollers). As the moving plate 52 moves, it drives the L-shaped serrated strip 541 to move, which in turn drives the positioning gear 542 to rotate. The rotation of the positioning gear 542 drives the speed-changing gear 543 to rotate, which in turn drives the moving rod 544 to move, and the movement of the moving rod 544 drives the column 545 to move. When the column 545 moves, it drives the rotating sleeve 546 to rotate. At this time, the rotating sleeve 546 drives the pointer 59 to rotate through the connecting shaft 55 (by pressing the fixing plate 510 with the nut, the damping pad 511 of the fixing plate 510 enters the outside of the pointer 59, thereby providing damping force to the pointer 59 so that it can indicate stably when there is no external force intervention). Before the test, the pointer 59 is adjusted to the zero position perpendicular to the ground by the bearing, and then the fixing plate 510 is pressed by the nut so that the damping pad 511 is in close contact with the pointer 59 to provide damping force and ensure stable indication when there is no external force intervention.

[0066] Then, the roll motor is started, driving the upper roll and the lower roll to rotate relative to each other at a low speed. Through the friction between the roll and the limit roll 4 and the rotating rod 512, the limit roll 4 and the rotating rod 512 are driven to rotate. When the upper roll and the lower roll rotate and there is no wear on the die surface (when the die size meets the standard), the moving plate 52 maintains the initial balance position, the pointer 59 points to zero, and the pressure value monitored by the pressure sensor 51 is within the preset range.

[0067] When there is a local protrusion in the die, the local protrusion presses against the rotating rod 512, pushing the moving plate 52 to overcome the preload of the telescopic member 53 and undergo horizontal displacement. The moving plate 52 moves, causing the rotating rod 512 to come into contact with the outer side of the upper and lower rollers and maintain contact with the inner surface of the die. As the moving plate 52 moves, it drives the L-shaped serrated strip 541 to move, which in turn drives the positioning gear 542 to rotate. The rotation of the positioning gear 542 drives the speed-changing gear 543 to rotate, which in turn drives the moving rod 54... 4. When the moving rod 544 moves, it drives the column 545 to move. When the column 545 moves, it drives the rotating sleeve 546 to rotate. At this time, the rotating sleeve 546 drives the pointer 59 to rotate through the connecting shaft 55 (by pressing the fixed plate 510 with the nut, the damping pad 511 of the fixed plate 510 enters the outside of the pointer 59, thereby providing damping force to the pointer 59 so that it can indicate stably when there is no external force intervention), thereby displaying the offset scale value on the display panel 57. At the same time, the displacement of the moving plate 52 causes the pressure on the pressure sensor 51 to change.

[0068] When the pressure value detected by the pressure sensor 51 exceeds the preset threshold, the alarm will sound. At the same time, the staff will observe the value indicated by the pointer 59 on the display panel 57 and determine whether the hole size at the current detection position is qualified based on whether the alarm sounds, and record the abnormal position.

[0069] After completing one test, the operator can gently push the measuring template 1 through the connecting handle 2 to move it to the next untested section.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A roll pass detection device, characterized in that, The utility model relates to a kind of measurement template (1) and hole type detection assembly, including: Measurement template (1) is arranged at the hole type between upper roller and lower roller, for detecting the hole type, one end surface of the measurement template (1) is clampedly installed with connecting handle (2);Hole type detection assembly includes: moving plate (52), telescopic piece (53), pressure type alarm structure, conversion structure (54), display plate (57), pointer (59) and rotating rod (512);The moving plate (52) is horizontally movably connected in the measurement template (1), and two telescopic pieces (53) are fixedly connected between the moving plate (52) and the one end surface of measurement template (1) close to connecting handle (2), the rotating rod (512) is rotatably connected to the moving plate (52), the telescopic piece (53) is used to provide the pre-tightening force for the moving plate (52) and make the rotating rod (512) keep contact with the hole type, the one end of the measurement template (1) away from telescopic piece (53) is installed with pressure type alarm structure, the pressure type alarm structure is connected with the moving plate (52), for detecting the pressure that the moving plate (52) receives, the conversion structure (54) is located in the measurement template (1), and is connected with the moving plate (52), for converting the horizontal movement of moving plate (52) into rotary motion, the display plate (57) is connected to the one end surface of the measurement template (1) close to connecting handle (2), the pointer (59) is connected to conversion structure (54), for intuitively showing the displacement of the moving plate (52); The conversion structure (54) includes L-shaped sawtooth rack (541), positioning gear (542), gear shift (543), moving rod (544), stand (545) and rotating sleeve (546);The moving plate (52) is provided with two, and the opposite surfaces of the two moving plates (52) are fixedly installed with L-shaped sawtooth rack (541), the outer side of the L-shaped sawtooth rack (541) is engagedly connected with positioning gear (542), the outer side of the positioning gear (542) is engagedly connected with gear shift (543), the outer side of the gear shift (543) is engagedly connected with toothed moving rod (544), the stand (545) is embeddedly installed in the moving rod (544), and the rotating sleeve (546) is sleeved on the outer surface of the stand (545).

2. The roll groove detection device according to claim 1, characterized in that, The top and bottom of the measurement template (1) are symmetrically fixed with support blocks (3), and the same limit roller (4) is rotatably connected between the adjacent two support blocks (3).

3. A roll groove detection device according to claim 2, wherein The pressure type alarm structure includes pressure sensor (51) and alarm, the movable end of the pressure sensor (51) is fixedly installed on the one end surface of the moving plate (52) away from telescopic piece (53), and the fixed end of the pressure sensor (51) is fixedly installed in the measurement template (1), and the alarm is embeddedly installed on the side surface of the measurement template (1).

4. A roll groove detection device according to claim 3, wherein The bottom of the moving rod (544) is welded with a lug, the inside of the measurement template (1) is provided with a sliding groove corresponding to the outside of the lug, the outer surface of the rotating sleeve (546) is provided with a helical inclined groove, and the stand (545) is located in the helical inclined groove.

5. A roll groove detection device according to claim 4, wherein The rotating sleeve (546) is internally clamped and installed with a connecting shaft (55), the connecting shaft (55) is rotationally connected inside the measuring template (1), and the outer surface of the connecting shaft (55) is clamped and installed with a concave cover (56).

6. A roll groove detection device according to claim 5, wherein The display plate (57) is clamped and installed outside the connecting shaft (55) and inside the concave cover (56), equidistant scale lines are arranged inside the display plate (57), and numbers are arranged outside the scale lines, and the pointer (59) is clamped and installed outside the connecting shaft (55) through a bearing.

7. A roll groove detection device according to claim 6, wherein The outer surface of the connecting shaft (55) is fixedly installed with a fixed plate (510), one end face of the fixed plate (510) close to the pointer (59) is provided with a damping pad (511), and one end face of the connecting shaft (55) away from the fixed plate (510) is threadedly connected with a nut.

8. A detection method using the roll groove detection device according to claim 7, characterized by, It comprises the following steps: S1, installation positioning: hold the measuring template (1) through the connecting handle (2), place it at the hole type between the upper roller and the lower roller, make the limiting roller (4) contact with the roller surface, the rotating rod (512) contacts with the hole surface, and keeps the contact state under the pre-tightening force of the telescopic piece (53); S2, drive detection: start the roller motor to drive the upper roller and the lower roller to rotate at low speed, drive the limiting roller (4) and the rotating rod (512) to rotate through the friction between the roller and the limiting roller (4) and the rotating rod (512); S3, abnormal perception and signal conversion: When the hole size meets the standard, the moving plate (52) keeps the initial balance position, the pointer (59) points to zero, and the pressure value monitored by the pressure sensor (51) is in the preset range; When there is a local protrusion in the hole type, the local protrusion extrudes the rotating rod (512) and pushes the moving plate (52) to displace horizontally against the pre-tightening force of the telescopic piece (53); the displacement of the moving plate (52) is converted into the rotary motion of the pointer (59) through the conversion structure (54), so that the offset scale value is displayed on the display plate (57); at the same time, the displacement of the moving plate (52) changes the pressure of the pressure sensor (51); When the pressure value monitored by the pressure sensor (51) exceeds the preset threshold, the alarm is triggered to issue an alarm; S4, result interpretation: the staff observes the indication value of the pointer (59) on the display plate (57), and determines whether the hole size of the current detection position is qualified according to whether the alarm is alarmed, and records the abnormal position; S5, transposition detection: when the detection size is qualified, the staff holds the measuring template (1) through the connecting handle (2) and drives it to move, so that the measuring template (1) enters the hole type between the upper roller and the lower roller for detection.

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