Rock wool board size detection equipment

Abstract

The invention relates to the technical field of rock wool board production and detection, and discloses rock wool board size detection equipment which comprises a movable frame body structure, driving mechanisms are arranged on the frame body structure, a sliding structure is in transmission connection between the driving mechanisms, an elastic attaching mechanism is arranged at the lower end of the sliding structure, and the elastic attaching mechanism is connected with the driving mechanisms. The lower portion of the elastic attaching mechanism is slidably connected with a thickness testing mechanism, the lower end of the thickness testing mechanism is provided with an outline drawing mechanism, the outline drawing mechanism draws the outer outline of the rock wool board through the elastic attaching mechanism, and the thickness testing mechanism can be attached to the upper edge of the rock wool board to measure the thickness of the rock wool board. The rock wool board thickness detection device can move to the position above a tested rock wool board to avoid carrying injury accidents, the thickness of the rock wool board can be detected through the thickness testing mechanism, and the outer contours of rock wool boards of all shapes can be drawn through a displacement sensor of the contour drawing mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rock wool board production detection, in particular to a rock wool board size detection equipment. BACKGROUND

[0002] Rock wool board is an artificial inorganic fiber processed by high temperature melting, which has the characteristics of light weight, small thermal conductivity, heat absorption and non-combustion. The initial research is a common application type in building, which is mainly used in industrial building and should meet the provisions of "Application Type and Basic Requirements of Building Insulation Materials". When the rock wool board is produced and put into use, the size of the rock wool board needs to be measured. Through the power transmission of the connecting rod, the two second measuring plates can be synchronously slipped and respectively abutted with the right side and the rear side of the plate to contact and separate, and the length and width are measured at one time, which saves the trouble of operating and measuring the width and length measuring components step by step, is convenient and efficient to use, but there are still the following problems: 1. There are some glass fibers on the edge of the rock wool board, which can easily be stabbed when the rock wool board is transported to the test table, and the size measuring machine is not convenient to move; 2. Only the planar size of the plate can be measured, and the thickness of the plate cannot be measured; 3. The edge of the rock wool board may be damaged, resulting in a smaller actual size of the rock wool board, and in today's rock wool board production, some rock wool boards are made into circular shapes, and this equipment cannot test the size of the special-shaped rock wool board. SUMMARY

[0003] In view of the defects of the prior art, the present application provides a rock wool board size detection equipment, which mainly solves the problems of being unable to measure the thickness and being unable to measure the size of the circular rock wool board.

[0004] To achieve the above purpose, the present application provides the following technical scheme: A rock wool board size detection equipment, comprising a movable frame structure, a driving mechanism is arranged on the frame structure, a sliding structure is drivingly connected between the driving mechanisms, an elastic fitting mechanism is arranged at the lower end of the sliding structure, a thickness testing mechanism is slidingly connected to the lower part of the elastic fitting mechanism, a contour tracing mechanism is arranged at the lower end of the thickness testing mechanism, the contour tracing mechanism traces the external contour of the rock wool board through the elastic fitting mechanism, and the thickness testing mechanism can be fitted to the upper edge of the rock wool board to measure the thickness of the rock wool board.

[0005] As a further further scheme of the present application, the frame structure comprises two X-axis sliding rails arranged in parallel, two Y-axis sliding rails fixedly connected between the two X-axis sliding rails and arranged in parallel to each other, reinforcing rods welded between the X-axis sliding rails and the Y-axis sliding rails for reinforcing and stabilizing, and stand columns welded to the lower portions of the X-axis sliding rails and the Y-axis sliding rails, and self-locking universal wheels mounted to the lower ends of the stand columns.

[0006] As a further further scheme of the present application, the driving mechanism comprises a housing, a through-type plug-in cavity formed in the interior of the housing, the housing being slidably connected to the X-axis sliding rails and the Y-axis sliding rails through the plug-in cavity, a plurality of upper support rollers rotatably mounted to the upper portion of the plug-in cavity, and the upper support rollers abutting against the upper edges of the X-axis sliding rails and the Y-axis sliding rails.

[0007] As a further further scheme of the present application, the interior of the housing is further provided with a driving groove, the driving groove being located at the lower side of the plug-in cavity, a driving motor being mounted to the exterior of the housing, a driving wheel being rotatably mounted in the driving groove through a bearing, the driving wheel abutting against the lower edges of the X-axis sliding rails and the Y-axis sliding rails through a rubber sleeve sleeved on the outer wall of the driving wheel, the driving wheel being in transmission connection with the output shaft of the driving motor through a flat key, and two driving mechanisms arranged symmetrically being welded with a connecting guide rail.

[0008] As a further further scheme of the present application, the sliding structure comprises a sliding block, upper and lower guide holes formed in the sliding block, the upper and lower guide holes being arranged in different planes and vertically, and the connecting guide rail being inserted through the upper and lower guide holes.

[0009] As a further further scheme of the present application, the elastic fitting mechanism comprises a cylindrical shell, an embedding groove formed in the lower portion of the cylindrical shell, a plug-in post provided on the axis of the embedding groove, and fitting springs embedded in the inner wall of the embedding groove, the fitting springs being distributed in multiple layers, the fitting springs in different layers being arranged in staggered manner, the fitting springs in the same layer being uniformly arranged along the circumferential direction of the plug-in post, the ends of the fitting springs being welded to the outer circumferential wall of the plug-in post and the inner circumferential wall of the cylindrical shell, respectively, and a plug-in groove being formed in the lower end of the plug-in post.

[0010] As a further further scheme of the present application, the thickness testing mechanism comprises a longitudinal rod, the upper end of the longitudinal rod being inserted into the plug-in groove, a limiting sheet being integrally formed at the upper end of the longitudinal rod, a plurality of limiting strips arranged along the length direction of the longitudinal rod being provided on the outer circumferential wall of the lower side of the longitudinal rod, a thickness indicating scale portion being integrally formed on the outer wall of the longitudinal rod, the limiting strips and the thickness indicating scale portion each being arranged in four groups in annular array, and the thickness indicating scale portion and the limiting strips being arranged in staggered manner.

[0011] As a further further scheme of the present application, the lower part of the longitudinal rod is slidingly connected with a sliding ring, the inner wall of the sliding ring is provided with a guide groove and an indicating groove, the sliding ring is sleeved on the outer side of the longitudinal rod through cooperation of the guide groove and a limiting strip, and the thickness indicating mark part is arranged on the inner side of the indicating groove, a tapered indicating part is arranged on the inner side wall of the indicating groove, a plurality of cross rods are arranged on the outer peripheral wall of the sliding ring, and a plurality of ball bearings are arranged on the lower part of the outer end of the cross rod.

[0012] As a further further scheme of the present application, the contour drawing mechanism comprises a base integrally formed at the lower end of the longitudinal rod, a plurality of contour measuring rollers arranged in an annular array are rotatably arranged on the outer wall of the base, a plurality of ball bearings two are arranged on the lower end of the base, and a mounting groove is arranged at the center of the lower end of the base, and a displacement sensor is arranged in the mounting groove.

[0013] Compared with the prior art, the present application provides a rock wool board size detection equipment, which has the following advantages: 1. The present application has simple structure and light overall equipment quality, and can be moved above the rock wool board to be tested through the self-locking universal wheels at the lower part, thereby avoiding the problem of being stabbed by the rock wool board, and the universal wheels enable the device to have high mobility.

[0014] 2. The thickness testing mechanism of the present application can detect the thickness of the rock wool board, and during specific measurement, one end of the cross rod is arranged on the upper surface of the rock wool board, and the indicating part can point to the thickness indicating mark part on the outer side of the longitudinal rod, thereby quickly reading the thickness of the rock wool board.

[0015] 3. The displacement sensor of the contour drawing mechanism of the present application can draw the outer contour of rock wool boards of all shapes, and the actually drawn contour needs to be reduced by the horizontal displacement of the displacement sensor to the edge of the roller, so as to be the real contour of the tested rock wool board, and be introduced into external software for calculation and measurement.

[0016] 4. The driving mechanism drives the contour drawing mechanism to measure, the structure of the driving mechanism is simple, and the two groups of driving motors are synchronously operated through the controller to drive the contour drawing mechanism at the lower part to move along the X axis and the Y axis, and the cooperation of the X axis sliding rail and the Y axis sliding rail can enable the contour drawing mechanism to draw the special-shaped contour.

[0017] 5. The elastic fitting mechanism of the present application can enable the contour drawing mechanism at the lower part to closely fit the outer edge of the rock wool board and move, in order to ensure that the contour drawing mechanism at the lower part is vertically fitted to the outer contour of the rock wool board, the fitting springs at different layers are arranged in an interlaced manner, so as to improve the accuracy of the measurement result. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the present application. Figure 2 Fig. 1 is a perspective view of the driving mechanism of the present application; Figure 3 Fig. 2 is a perspective view of the sliding structure of the present application; Figure 4 Fig. 3 is a sectional perspective view of the cylindrical shell of the present application; Figure 5 Fig. 4 is a perspective view of the testing mechanism of the present application; Figure 6 Fig. 5 is a perspective view of the sliding ring of the present application; Figure 7 Fig. 6 is a perspective view of the contour drawing mechanism of the present application.

[0019] In the figure: 1, frame structure; 2, driving mechanism; 3, sliding structure; 4, elastic fitting mechanism; 5, thickness testing mechanism; 6, contour drawing mechanism; 101, X-axis slide rail; 102, Y-axis slide rail; 103, reinforcing rod; 104, stand column; 105, self-locking universal wheel; 201, shell; 202, plug-in cavity; 203, upper support roller; 204, driving groove; 205, driving motor; 206, driving wheel; 207, connecting guide rail; 301, sliding block; 302, upper guide hole; 303, lower guide hole; 401, cylindrical shell; 402, embedded groove; 403, fitting spring; 404, plug-in column; 405, plug-in slot; 501, longitudinal rod; 502, limiting sheet; 503, limiting strip; 504, thickness indicating scale part; 505, sliding ring; 506, guide groove; 507, indicating slot; 508, cross rod; 509, indicating part; 510, ball one; 601, base; 602, roller; 603, ball two; 604, mounting slot; 605, displacement sensor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below by way of examples and in conjunction with the drawings. It should be understood that the specific examples described herein are only used to explain the present application and should not be used to limit the present application.

[0021] The serial numbers of components in the present application, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. Unless otherwise specified, the "connection" and "coupling" in the present application include direct and indirect connection (coupling). In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0023] Reference Figures 1-7 A rock wool board size detection device, comprising a movable frame structure 1, a driving mechanism 2 is arranged on the frame structure 1, and a sliding structure 3 is drivingly connected between the driving mechanism 2, a elastic fitting mechanism 4 is arranged at the lower end of the sliding structure 3, a thickness testing mechanism 5 is slidingly connected to the lower part of the elastic fitting mechanism 4, a contour drawing mechanism 6 is arranged at the lower end of the thickness testing mechanism 5, the contour drawing mechanism 6 draws the external contour of the rock wool board through the elastic fitting mechanism 4, and the thickness testing mechanism 5 can be fitted to the upper edge of the rock wool board to measure the thickness of the rock wool board.

[0024] In particular, in the present application, the frame structure 1 comprises two X-axis sliding rails 101 arranged in parallel, two Y-axis sliding rails 102 fixedly connected between the two X-axis sliding rails 101 and parallel to each other, a reinforcing rod 103 welded between the X-axis sliding rails 101 and the Y-axis sliding rails 102 for reinforcement and stability, and a stand column 104 welded to the lower part of the X-axis sliding rails 101 and the Y-axis sliding rails 102, and a self-locking universal wheel 105 is installed at the lower end of the stand column 104. The self-locking universal wheel 105 makes the size detection device have high mobility, so that the rock wool board no longer needs to be carried to the detection table for measurement, avoiding accidents, and the self-locking universal wheel 105 can be self-locked and fixed through the self-locking structure during testing.

[0025] It needs to be explained that the driving mechanism 2 comprises a shell 201, a through-type plug-in cavity 202 is opened in the inside of the shell 201, the shell 201 is slidably connected to the X-axis slide rail 101 and the Y-axis slide rail 102 through the plug-in cavity 202, and the upper part of the plug-in cavity 202 is rotatably installed with an upper supporting roller 203, the upper supporting roller 203 abuts on the upper edges of the X-axis slide rail 101 and the Y-axis slide rail 102, the upper supporting roller 203 is equidistantly provided with seven groups, and the upper supporting roller 203 plays a role in supporting the driving mechanism 2 and makes the driving mechanism 2 move as horizontally as possible.

[0026] In particular, the inside of the shell 201 is also provided with a driving groove 204, the driving groove 204 is located on the lower side of the plug-in cavity 202, a driving motor 205 is installed on the outside of the shell 201, a driving wheel 206 is rotatably installed in the driving groove 204 through a bearing, the driving wheel 206 abuts on the lower edges of the X-axis slide rail 101 and the Y-axis slide rail 102 through a rubber sleeve sleeved on the outer wall, the driving wheel 206 is drivingly connected with the output shaft of the driving motor 205 through a flat key, and the symmetrical driving mechanisms 2 are welded with a connecting guide rail 207, and the two driving motors 205 connected by the connecting guide rail 207 keep synchronous movement through a controller.

[0027] It needs to be explained that the sliding structure 3 comprises a sliding block 301, an upper guide hole 302 and a lower guide hole 303 are opened in the sliding block 301, the upper guide hole 302 and the lower guide hole 303 are vertically arranged on different planes, and the connecting guide rail 207 is inserted through the upper guide hole 302 and the lower guide hole 303, and the profile tracing mechanism 6 can trace the profile of the special-shaped profile through the cooperation of the X-axis slide rail 101, the Y-axis slide rail 102 and the driving mechanism 2.

[0028] In particular, the elastic fitting mechanism 4 comprises a cylindrical shell 401 integrally formed on the lower part of the sliding block 301, an embedding groove 402 is opened in the lower part of the cylindrical shell 401, a plug-in column 404 is arranged on the axis of the embedding groove 402, a fitting spring 403 is embedded on the inner wall of the embedding groove 402, the fitting spring 403 is distributed in multiple layers, in order to ensure that the lower profile tracing mechanism 6 is vertically fitted on the outer profile of the rock wool board, the fitting springs 403 in different layers are arranged in staggered arrangement, the fitting springs 403 in the same layer are arranged in annular array with six groups, the ends of the fitting springs 403 are respectively welded with the outer peripheral wall of the plug-in column 404 and the inner peripheral wall of the cylindrical shell 401, and a plug-in groove 405 is opened in the lower end of the plug-in column 404, the fitting spring 403 in the elastic fitting mechanism 4 makes the lower profile tracing mechanism 6 closely fit the edge of the rock wool board to trace the profile, and the accuracy of the measurement result is improved.

[0029] It should be noted that the thickness testing mechanism 5 comprises a longitudinal rod 501, the upper end of the longitudinal rod 501 is inserted into the slot 405, and the upper end of the longitudinal rod 501 is integrally formed with a limiting sheet 502, a plurality of limiting strips 503 are arranged on the lower side of the outer wall of the longitudinal rod 501 in the length direction of the longitudinal rod 501, and the outer wall of the longitudinal rod 501 is integrally formed with a thickness indicating mark part 504, the limiting strips 503 and the thickness indicating mark part 504 are both annularly arranged in four groups, and the thickness indicating mark part 504 and the limiting strips 503 are arranged in staggered arrangement.

[0030] In particular, in the present application, the lower part of the longitudinal rod 501 is slidingly connected with a sliding ring 505, the inner wall of the sliding ring 505 is provided with a guide groove 506 and an indicating groove 507, the sliding ring 505 is sleeved on the outer side of the longitudinal rod 501 through the cooperation of the guide groove 506 and the limiting strip 503, and the thickness indicating mark part 504 is arranged on the inner side of the indicating groove 507, the inner side wall of the indicating groove 507 is provided with a tapered indicating part 509, a plurality of cross rods 508 are arranged on the outer peripheral wall of the sliding ring 505, a plurality of ball bearings 510 are arranged on the lower part of the outer end of the cross rod 508, the ball bearings 510 are in contact with the upper part of the rock wool board and roll, one end of the cross rod 508 is arranged on the upper surface of the rock wool board, and the indicating part 509 at the other end of the cross rod 508 can point to the thickness indicating mark part 504 on the outer side of the longitudinal rod 501, so that the thickness of the rock wool board can be quickly read.

[0031] It should be noted that the contour drawing mechanism 6 comprises a base 601 integrally formed at the lower end of the longitudinal rod 501, four groups of contour measuring rollers 602 are arranged in annular array on the outer wall of the base 601, six groups of ball bearings 603 are arranged on the lower end of the base 601, an installation groove 604 is arranged at the center of the lower end of the base 601, and a displacement sensor 605 is arranged in the installation groove 604, the contour measuring rollers 602 on the outer side of the base 601 are in contact with the periphery of the rock wool board and move through the driving mechanism 2 on the upper part, the displacement sensor 605 recognizes the movement track and subtracts the horizontal displacement of the contour measuring rollers 602 from the displacement sensor 605, so as to obtain the true value of the outer contour of the rock wool board to be measured, and the data can be introduced into the external measurement software to measure the size of the rock wool board with different shapes.

[0032] The present application is divided into the following steps when in use: S1: the size detection equipment is moved to the upper part of the rock wool board to be tested through the self-locking universal wheel 105 on the lower part, and then the size detection equipment is locked through the self-locking mechanism; S2: then the driving motor 205 in the driving mechanism 2 is controlled to operate, and the contour drawing mechanism 6 is moved to the edge of the rock wool board; S3: the sliding ring 505 of the thickness testing mechanism 5 is placed on the upper edge of the rock wool board, and then the thickness is read through the pointer of the indicating part 509, and the line of sight should be parallel to the upper edge of the indicating part 509 when reading. S4: Then the operation of the driving motor 205 in the driving mechanism 2 is controlled, and the contour tracing mechanism 6 is operated along the outer contour of the tested rock wool board for one round; S5: The measured outer contour data is introduced into an external software for calculation, the size data of the rock wool board is obtained, and the actual area is calculated.

[0033] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0034] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which belongs to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A rock wool slab dimension detection apparatus comprising a movable rack structure (1), characterized in that, The rack structure (1) is provided with driving mechanism (2), transmission connection has sliding structure (3) between driving mechanism (2), the lower end of sliding structure (3) is provided with elastic fitting mechanism (4), the lower part of elastic fitting mechanism (4) is slidably connected with thickness test mechanism (5), the lower end of thickness test mechanism (5) is provided with contour drawing mechanism (6), the external contour of rock wool board is described by contour drawing mechanism (6) through elastic fitting mechanism (4), the thickness of rock wool board can be measured by fitting on the upper edge of rock wool board.

2. The rock wool board size detection device according to claim 1, characterized in that, The rack structure (1) includes two X-axis sliding rails (101) arranged in parallel, two Y-axis sliding rails (102) parallel to each other are fixedly connected between the two X-axis sliding rails (101), the X-axis sliding rails (101) and the Y-axis sliding rails (102) are welded with reinforcing rods (103) for reinforcing stability, the lower parts of the X-axis sliding rails (101) and the Y-axis sliding rails (102) are welded with stand columns (104), and self-locking universal wheels (105) are installed at the lower ends of the stand columns (104).

3. The rock wool board size detection device according to claim 1, wherein, The driving mechanism (2) includes a housing (201), a through-type plug-in cavity (202) is formed in the housing (201), the housing (201) is slidably connected to the X-axis sliding rails (101) and the Y-axis sliding rails (102) through the plug-in cavity (202), a plurality of upper support rollers (203) are rotatably installed at the upper part of the plug-in cavity (202), and the upper support rollers (203) abut against the upper edges of the X-axis sliding rails (101) and the Y-axis sliding rails (102).

4. The rock wool board size detection device according to claim 3, characterized in that, A driving groove (204) is further formed in the housing (201), the driving groove (204) is located on the lower side of the plug-in cavity (202), a driving motor (205) is installed on the outer side of the housing (201), a driving wheel (206) is rotatably installed in the driving groove (204) through a bearing, the driving wheel (206) abuts against the lower edges of the X-axis sliding rails (101) and the Y-axis sliding rails (102) through a rubber sleeve sleeved on the outer wall, the driving wheel (206) is in transmission connection with the output shaft of the driving motor (205) through a flat key, and two driving mechanisms (2) symmetrically arranged are welded with a connecting guide rail (207).

5. The rock wool board size detection device according to claim 4, wherein, The sliding structure (3) includes a sliding block (301), an upper guide hole (302) and a lower guide hole (303) are formed in the sliding block (301), the upper guide hole (302) and the lower guide hole (303) are arranged in different planes and perpendicular to each other, and the connecting guide rail (207) penetrates and is plugged into the upper guide hole (302) and the lower guide hole (303).

6. The rock wool board size detection device according to claim 1, wherein, The elastic fitting mechanism (4) comprises a cylindrical shell (401), a lower part of the cylindrical shell (401) is provided with an embedded groove (402), an axis of the embedded groove (402) is provided with a plug-in column (404), and an inner wall of the embedded groove (402) is embedded with a fitting spring (403), the fitting spring (403) is distributed with multiple layers, the fitting springs (403) of different layers are arranged in staggered arrangement, the fitting springs (403) of the same layer are uniformly arranged along the circumference of the plug-in column (404), and the ends of the fitting springs (403) are respectively welded and connected with the outer circumferential wall of the plug-in column (404) and the inner circumferential wall of the cylindrical shell (401), and the lower end of the plug-in column (404) is provided with a plug-in groove (405).

7. The rock wool board size detection device according to claim 6, characterized in that, The thickness testing mechanism (5) comprises a longitudinal rod (501), the upper end of the longitudinal rod (501) is plugged into the plug-in groove (405), and the upper end of the longitudinal rod (501) is integrally formed with a limiting sheet (502), a plurality of limiting strips (503) are arranged on the outer circumferential wall of the lower side of the longitudinal rod (501) along the length direction of the longitudinal rod (501), and a thickness indicating scale part (504) is integrally formed on the outer wall of the longitudinal rod (501), the limiting strips (503) and the thickness indicating scale part (504) are arranged in annular array with four groups, and the thickness indicating scale part (504) and the limiting strips (503) are arranged in staggered arrangement.

8. The rock wool board size detection device according to claim 7, characterized in that, The lower part of the longitudinal rod (501) is slidably connected with a sliding ring (505), the inner wall of the sliding ring (505) is provided with a guide groove (506) and an indicating groove (507), the sliding ring (505) is sleeved on the outside of the longitudinal rod (501) through cooperation of the guide groove (506) and the limiting strips (503), the thickness indicating scale part (504) is arranged on the inside of the indicating groove (507), a tapered indicating part (509) is arranged on the inner side wall of the indicating groove (507), a plurality of cross rods (508) are arranged on the outer circumferential wall of the sliding ring (505), and a plurality of ball bearings (510) are arranged on the lower part of the outer end of the cross rods (508).

9. The rock wool board size detection device according to claim 8, characterized in that, The contour drawing mechanism (6) comprises a base (601) integrally formed at the lower end of the longitudinal rod (501), a plurality of contour measuring rollers (602) are arranged in annular array and are rotatably installed on the outer wall of the base (601), a plurality of ball bearings (603) are installed on the lower end of the base (601), an installation groove (604) is arranged at the center of the lower end of the base (601), and a displacement sensor (605) is installed in the installation groove (604).

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