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CN-122016535-A - Wear-resisting testing machine

CN122016535ACN 122016535 ACN122016535 ACN 122016535ACN-122016535-A

Abstract

The invention discloses an abrasion-resistant testing machine, and belongs to the field of concrete performance testing devices. The wear-resisting testing machine comprises a grinding head assembly for polishing a sample, a supporting assembly for supporting the sample, a rotating assembly movably connected with the grinding head assembly, a first driving assembly for driving the rotating assembly to rotate, a fixing assembly and a control unit, wherein the fixing assembly is rotationally connected with the rotating assembly to limit the rotating assembly and is used for fixedly installing the supporting assembly. The fixed assembly comprises a first fixed plate, a first bearing sleeve, a second fixed plate, a driven wheel supporting seat and a second bearing, wherein the first bearing is embedded in the first bearing sleeve, the rotating assembly is in sliding connection with an inner ring of the first bearing, at least three positioning supporting columns are arranged on the lower surface of the first fixed plate, and the second bearing is arranged in an inner cavity of the driven wheel supporting seat. The abrasion-resistant tester ensures that the size of the annular grinding groove of the prepared sample is uniform, and the smooth performance of the test is ensured.

Inventors

  • ZHU HAILONG
  • FAN HAILONG
  • LI HE
  • SONG XIN
  • ZHAO SONGHE
  • ZHANG DANWU
  • LIU JIANZHAO
  • WANG QIANGQIANG

Assignees

  • 中国国检测试控股集团股份有限公司
  • 国检测试控股集团仪器装备(北京)有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (10)

  1. 1. A wear-resistant testing machine for polishing a specimen (100) and forming an annular grinding groove (110) in the specimen (100), comprising: The grinding head assembly (5) is placed on a ground surface of the sample (100) to grind the sample (100), the grinding head assembly (5) comprises an annular supporting seat (51) and a plurality of balls (52) which are connected with the annular supporting seat (51) in a rolling way, and the top wall and the bottom wall of the balls (52) respectively protrude out of the annular supporting seat (51); The rotating assembly (3) is movably connected with the grinding head assembly (5) and is used for driving the grinding head assembly (5) to grind the sample (100), the rotating assembly (3) comprises a rotating shaft (31) and an annular plate (32) fixed at the bottom end of the rotating shaft (31), and an annular slideway (33) matched with the grinding head assembly (5) is formed on the bottom surface of the annular plate (32) along the circumferential direction; the first driving assembly (4) is connected with the rotating assembly (3) and is used for driving the rotating assembly (3) to rotate, and the first driving assembly (4) comprises a rotating source (41), a driving wheel (42) connected with the driving end of the rotating source (41), a driven wheel (43) connected with the rotating assembly (3), a belt (44) sleeved on the driving wheel (42) and the driven wheel (43) and a first coupling (45) between the rotating assembly (3) and the driven wheel (43); the rotating component (3) rotates along with the first coupler (45) and moves up and down relative to the first coupler (45); the fixed assembly (1) is rotationally connected with the rotating assembly (3) to limit the rotating assembly (3), the fixed assembly (1) comprises a first fixed plate (11) perpendicular to the axial direction of the rotating shaft (31) and a first bearing sleeve (12) fixedly arranged on the first fixed plate (11), a first bearing is embedded in the first bearing sleeve (12), the first fixed plate (11) is provided with a first through hole, the rotating assembly (3) is in sliding connection with an inner ring of the first bearing, the lower surface of the first fixed plate (11) is provided with at least three positioning support columns (13) which are parallel to the axial direction of the rotating shaft (31) and are arranged on the outer side of the rotating shaft (31), the bottom ends of the plurality of positioning support columns (13) are coplanar, the fixed assembly (1) further comprises a second fixed plate (14) perpendicular to the axial direction of the rotating shaft (31) and a cylindrical driven wheel supporting seat (15) fixedly arranged on the second fixed plate (14), a driven wheel (43) is arranged on the upper surface of the driven wheel supporting seat (15), a second bearing is arranged in an inner cavity of the driven wheel supporting seat (15), and the second bearing is in synchronous joint with the driven wheel supporting seat (15) and the first bearing (45) is in a sleeved joint; The support assembly (2) is used for supporting the sample (100) and can drive the sample (100) to move up and down, and the support assembly (2) comprises a sample placing table (21), a second driving assembly (22) connected with the sample placing table (21) and a universal joint (23) between the sample placing table (21) and the second driving assembly (22); The control unit is respectively and electrically connected with the support component (2) and the first driving component (4) and is used for controlling the support component (2) and the first driving component (4) to execute actions; When the second driving assembly (22) operates to drive the sample (100) to ascend to be in contact with the positioning support column (13), the ground surface of the sample (100) is connected with the bottom end plane of the positioning support column (13), the sample (100) is automatically clamped to be parallel to the grinding head assembly (5), the sample (100) is clamped between the positioning support column (13) and the sample placing table (21), the top wall of the ball (52) is connected with the annular slide way (33), and the bottom wall of the ball (52) is connected with the ground surface of the sample (100).
  2. 2. The wear-resistant testing machine according to claim 1, further comprising a water supply assembly (6) arranged at the bottom end of the rotating assembly (3), wherein the water supply assembly (6) comprises a water inlet cylinder (61) fixedly arranged at the bottom end of the rotating shaft (31), a water inlet sleeve (62) sleeved on the water inlet cylinder (61) and a connecting plate (63) fixedly arranged at the bottom end surface of the water inlet cylinder (61); The diameter of the inner cavity of the water inlet sleeve (62) is smaller than that of the rotating shaft (31), the upper end face of the water inlet sleeve (62) is connected with the bottom end face of the rotating shaft (31), the water inlet sleeve (62) is limited between the rotating shaft (31) and the connecting plate (63), a water inlet channel communicated with the inner cavity of the water inlet sleeve (62) is formed in the water inlet cylinder (61), a radial through connecting hole (621) is formed in the circumferential surface of the water inlet sleeve (62), a water inlet connector (64) is arranged on the through connecting hole (621), and the water inlet connector (64) is connected with a water inlet device; A first water outlet hole (631) penetrating through the central shaft of the connecting plate (63) is formed, and the water inlet channel is communicated with the first water outlet hole (631).
  3. 3. The wear-resistant testing machine according to claim 2, wherein the connecting plates (63) are a first connecting plate (632) and a second connecting plate (633) which are in a step shape, a transition surface (634) is arranged between the first connecting plate (632) and the second connecting plate (633), a circular groove (635) is formed in the center of the top surface of the first connecting plate (632), the bottom end of the water inlet cylinder (61) is embedded in the circular groove (635), and the top surface of the first connecting plate (632) is connected with the bottom surface of the water inlet sleeve (62); The second connecting plate (633) is embedded in the inner cavity of the annular plate (32), and the transition surface (634) is connected with the top surface of the annular plate (32); The rotating assembly (3) further comprises a mounting plate (34), the annular plate (32) is arranged between the mounting plate (34) and the first connecting plate (632), and the annular plate (32) and the water inlet sleeve (62) are arranged at intervals.
  4. 4. The abrasion resistance tester according to claim 2, wherein the water supply assembly (6) further comprises a limiting structure, and the limiting structure limits the rotation of the water inlet sleeve (62) and can realize the lifting of the water inlet sleeve (62).
  5. 5. The wear-resistant testing machine according to claim 4, wherein the limiting structure comprises a limiting column (66) arranged on the outer side of a central shaft of the upper end face of the water inlet sleeve (62) and a blocking plate (67) in sliding connection with the limiting column (66), one end of the blocking plate (67) is provided with a through hole, the limiting column (66) is in clearance fit with the through hole and penetrates through the through hole of the blocking plate (67), and the other end of the blocking plate (67) is fixedly connected with the fixing assembly (1).
  6. 6. The machine according to claim 1, further comprising a load assembly (7) sleeved on the rotating assembly (3) for providing a load to the grinding head assembly (5); The load assembly (7) comprises a load cylinder (71), an upper groove and a lower groove are respectively formed in the central shaft position of the upper end portion and the lower end portion of the load cylinder (71), a third bearing (72) is arranged in the upper groove, a fourth bearing (73) is arranged in the lower groove, the rotating assembly (3) is respectively connected with the third bearing (72) and the fourth bearing (73) in a rotating mode, two spaced clamping grooves are formed in the middle of the rotating shaft (31) along the circumferential direction, clamping clamps (74) are respectively arranged in the clamping grooves, one clamping clamp (74) is arranged on the upper surface of the third bearing (72), the other clamping clamp (74) is arranged on the lower surface of the fourth bearing (73), and the clamping clamps (74) are used for fixing the load assembly (7) in the axial direction of the rotating shaft (31).
  7. 7. The machine according to claim 6, further comprising a detection assembly (8); The detection assembly (8) comprises a cross rod (81) and a displacement detection component (82), one end of the cross rod (81) is arranged on the circumferential surface of the load cylinder (71), the cross rod (81) is perpendicular to the central axis direction of the load cylinder (71), the displacement detection component (82) is used for detecting the displacement of the cross rod (81), the detection assembly (8) further comprises a limiting plate (83), the limiting plate (83) is fixedly arranged at one end part of the first fixing plate (11) and the second fixing plate (14) far away from the vertical fixing plate (19), the limiting plate (83) is provided with a long-strip limiting hole (831) along the axial direction parallel to the rotating shaft (31), and the cross rod (81) penetrates through the limiting hole (831); The detection assembly (8) further comprises a revolution detection sensor (85) and a detection column (86) fixedly arranged on one side of the annular supporting seat (51), the revolution detection sensor (85) is arranged on the same height position on the outer side of the annular supporting seat (51), and the revolution detection sensor (85) is fixedly arranged on the fixing assembly (1).
  8. 8. The machine according to claim 1, wherein a slide groove is provided on one of a side wall (91) of the rotating shaft (31) and an inner side wall (91) of the first coupling (45), and a positioning protrusion which is engaged with the slide groove is provided on the other of the side wall (91) of the rotating shaft (31) and the inner side wall (91) of the first coupling (45), the positioning protrusion being provided so as to be slidable with respect to the slide groove.
  9. 9. The wear-resistant testing machine according to claim 1, wherein the fixing assembly (1) further comprises a third fixing plate (16) above the rotation source (41) and a cylindrical driving wheel supporting seat (17) fixedly arranged on the third fixing plate (16), the driving wheel (42) is arranged on the upper surface of the driving wheel supporting seat (17), the third fixing plate (16) is provided with a third through hole (161), and a second coupling connected with the driving end of the rotation source (41) is arranged in the third through hole (161) in a penetrating manner and is connected with the driving wheel (42); The fixing assembly (1) further comprises a workbench (18) and vertical fixing plates (19) which are arranged on the upper surface of the workbench (18) and perpendicular to the workbench (18), wherein the first fixing plates (11) and the second fixing plates (14) are arranged on the same side of the vertical fixing plates (19) at intervals in parallel, the second fixing plates (14) are arranged above the first fixing plates (11), the second fixing plates (14) are arranged on one side of the top ends of the vertical fixing plates (19), the third fixing plates (16) are arranged on the other side of the top ends of the vertical fixing plates (19), and the heights of the second fixing plates (14) and the third fixing plates (16) are consistent; the vertical fixing plate (19) is fixedly connected with the workbench (18), the first fixing plate (11), the second fixing plate (14) and the third fixing plate (16) respectively.
  10. 10. The machine according to claim 9, further comprising a protective assembly (9) disposed around and above the table (18); the protection component (9) comprises a side wall (91) and a door (92) movably connected with the side wall (91).

Description

Wear-resisting testing machine Technical Field The invention relates to the field of concrete performance testing devices, in particular to an abrasion resistance testing machine. Background Concrete and its products are widely used in the construction field, including numerous scenes such as foundation foundations, bridge tunnels, building constructions, and the like. In order to ensure the durability and stability of the concrete product in the use process, the abrasion resistance test detection is an indispensable link, and the concrete product meeting the safety standard is obtained by screening the abrasion resistance test detection. The conventional method for evaluating wear resistance is a ball bearing method, and the principle is that a ball bearing is used as a grinding head, and the grinding head generates rolling and sliding friction on a surface to be ground of a sample when the grinding head rotates under a predetermined load. And grinding the ground surface into annular grinding grooves. The abrasion resistance was calculated by measuring the depth of the grinding groove and the number of grinding revolutions of the grinding head. However, in the actual use process, the size of the annular grinding groove is uneven due to the uneven bottom surface of the sample relative to the ground surface and the non-parallel factor of the bearing table supporting the sample and the ground surface, as shown in fig. 1 and 2 in the attached drawings of the specification. JC/T906-2023, cement-based wear-resistant Material for concrete floor, describes 7.11.1.4 that "regarding the maximum of the groove width of the sample 100 as a reference point, the groove width at the positions where the reference point of the groove of the sample 100 rotates 90 degrees and 180 degrees is measured to be accurate to 0.1mm, the ratio of the maximum groove width to the minimum groove width should not be greater than 1.5, otherwise the sample 100 should be discarded. "this kind of experiment can waste test material, influences test efficiency, increases experimenter's working strength. Disclosure of Invention The invention provides an abrasion-resistant testing machine which is used for solving the problem of uneven size of an annular grinding groove of a sample after grinding and improving testing efficiency. The technical scheme of the invention is as follows: An abrasion resistance tester for polishing a sample and forming an annular grinding groove on the sample, comprising: The grinding head assembly is placed on the ground surface of the sample to grind the sample and comprises an annular supporting seat and a plurality of balls connected with the annular supporting seat in a rolling way, and the top wall and the bottom wall of the balls respectively protrude out of the annular supporting seat; The rotating assembly comprises a rotating shaft and an annular plate fixed at the bottom end of the rotating shaft, and an annular slideway matched with the grinding head assembly is arranged on the bottom surface of the annular plate along the circumferential direction; The first driving assembly is connected with the rotating assembly and used for driving the rotating assembly to rotate, and comprises a rotating source, a driving wheel connected with the driving end of the rotating source, a driven wheel connected with the rotating assembly, a belt sleeved on the driving wheel and the driven wheel and a first coupling between the rotating assembly and the driven wheel; the rotating component rotates along with the first coupling and moves up and down relative to the first coupling; The fixed assembly is rotationally connected with the rotating assembly to limit the rotating assembly and comprises a first fixed plate vertical to the axial direction of the rotating shaft and a first bearing sleeve fixedly arranged on the first fixed plate, a first bearing is embedded in the first bearing sleeve, the first fixed plate is provided with a first through hole, the rotating assembly is in sliding connection with an inner ring of the first bearing, the lower surface of the first fixed plate is provided with at least three positioning support columns which are parallel to the axial direction of the rotating shaft and are arranged outside the rotating shaft, and the bottom ends of the positioning support columns are coplanar; the device comprises a sample placing table, a second driving component connected with the sample placing table, and a universal joint between the sample placing table and the second driving component, wherein the sample placing table is provided with a plurality of first driving components; the control unit is respectively and electrically connected with the support component and the first driving component and is used for controlling the support component and the first driving component to execute actions; When the second driving assembly operates to drive the sample to rise to contact with the positioning support c