Wear testing device and wear testing system

Abstract

The application provides a wear testing device and a wear testing system. The wear testing device comprises a support structure, a first fixing structure for fixing a first measured member, and a second fixing structure for fixing a second measured member. The first fixing structure and the second fixing structure are arranged on the support structure in a vertical direction. The first fixing structure is movably arranged on the support structure in the vertical direction, so that the first measured member can abut against the second measured member with a predetermined pressure. The first fixing structure is rotatably arranged on the support structure, so that the first measured member can rotate relative to the second measured member at a predetermined rotating speed. A pressure detection structure is arranged on the support structure. The second fixing structure abuts against or is connected to the pressure detection structure. The pressure detection structure is used for detecting the pressure between the first measured member and the second measured member. In the technical scheme of the application, the wear testing device can accurately reflect the wear resistance of the measured member.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of abrasion testing, in particular to an abrasion testing device and an abrasion testing system. BACKGROUND

[0002] Abrasion test is a kind of material test for measuring the abrasion resistance of materials. The abrasion resistance of materials can be compared through abrasion test. According to the specific working conditions of parts and the determined abrasion form, a suitable abrasion testing device is selected to make the test results consistent with the actual results, so as to accurately reflect the abrasion resistance of materials. SUMMARY

[0003] The main purpose of the present application is to provide an abrasion testing device and an abrasion testing system, which can accurately reflect the abrasion resistance of the measured part.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present application, an abrasion testing device is provided, comprising: a support structure; a first fixing structure for fixing a first measured part; a second fixing structure for fixing a second measured part; wherein the first fixing structure and the second fixing structure are spaced apart along the vertical direction on the support structure, the first fixing structure is movably arranged along the vertical direction relative to the support structure, so that the first measured part can abut against the second measured part with a predetermined pressure; and the first fixing structure is rotatably arranged relative to the support structure, so that the first measured part can rotate relative to the second measured part at a predetermined rotational speed; and a pressure detection structure arranged on the support structure, the second fixing structure abuts or is connected with the pressure detection structure, and the pressure detection structure is used for detecting the pressure between the first measured part and the second measured part.

[0005] Further, the support structure comprises a test box, the test box defines a test cavity, a first through hole and a second through hole, the first through hole and the second through hole are both communicated with the test cavity; a first end of the first fixing structure is arranged in the first through hole and is sealingly connected with the first through hole, a second end of the first fixing structure is located in the test cavity, and the first fixing structure is movably arranged along the central axis of the first through hole; a first end of the second fixing structure is arranged in the second through hole and is sealingly connected with the second through hole, a second end of the second fixing structure is located in the test cavity, so that the test cavity forms a sealed cavity.

[0006] Further, the abrasion testing device further comprises a pressure applying structure, the pressure applying structure is connected with the support structure and is movably arranged along the vertical direction relative to the support structure, and the pressure applying structure is connected with the first fixing structure.

[0007] Further, the support structure has a first through hole, the pressure applying structure is a cylindrical structure, the outer wall surface of the pressure applying structure is threadedly matched with the inner wall surface of the first through hole; and the first end of the first fixing structure is located in the inner cavity of the pressure applying structure.

[0008] Further, the abrasion testing device further comprises a driving structure connected with the pressure applying structure, part of the driving structure is located in the inner cavity of the pressure applying structure, and an output shaft of the driving structure is connected with the first fixing structure.

[0009] Further, the abrasion testing device further comprises a first locking member connected with the pressure applying structure to lock the pressure applying structure on the supporting structure.

[0010] Further, the outer wall surface of the pressure applying structure is provided with a first external thread, and the first locking member is a nut threadedly connected with the pressure applying structure.

[0011] Further, the abrasion testing device further comprises a first limiting member arranged at the outer periphery of the first fixing structure, the first limiting member is in abutment with the pressure applying structure, and the first limiting member is used to prevent the first fixing structure from moving along the extension direction of the rotation axis relative to the pressure applying structure.

[0012] Further, the abrasion testing device further comprises an elastic member arranged at the outer periphery of the first fixing structure, and the elastic member is located between the first limiting member and the pressure applying structure, one end of the elastic member is in abutment with or connected with the first limiting member, and the other end of the elastic member is in abutment with or connected with the pressure applying structure.

[0013] Further, the abrasion testing device further comprises a second limiting member arranged at the outer periphery of the first fixing structure, the first fixing structure is rotatably arranged relative to part of the second limiting member, and the second limiting member is located in the first through hole and in contact with the inner wall surface of the first through hole.

[0014] Further, a plurality of second limiting members are arranged at the outer wall surface of the first fixing structure along the rotation axis direction of the first fixing structure, and the plurality of second limiting members are arranged at intervals; or the outer wall surface of the first fixing structure is provided with a positioning groove, and the second limiting member is arranged in the positioning groove; or the second limiting member is a bearing.

[0015] Further, the abrasion testing device further comprises a pressure conducting structure, one end of the pressure conducting structure is connected with the pressure detecting structure, and the other end of the pressure conducting structure is in abutment with or connected with the second fixing structure.

[0016] Further, the pressure conducting structure comprises a conducting block and a conducting ball, the conducting block is connected with the pressure detecting structure, and the conducting block and the second fixing structure are both in abutment with the conducting ball; the abrasion testing device further comprises a limiting structure for limiting the rolling of the conducting ball, and the limiting structure is arranged on the conducting block and / or the second fixing structure.

[0017] Further, the limiting structure comprises a plurality of limiting blocks which are arranged on the second fixing structure at intervals, and a limiting groove arranged on the conducting block, and part of the limiting blocks is arranged in the limiting groove, and the plurality of limiting blocks jointly limit the conducting ball in the limiting groove.

[0018] Further, the supporting structure further comprises a supporting seat connected with the test box, and the pressure detecting structure is arranged on the supporting seat, and the test box is arranged above the pressure detecting structure.

[0019] Further, the abrasion testing device further comprises a driving structure which is connected with the supporting structure and is movably arranged relative to the supporting structure, and an output shaft of the driving structure is drivingly connected with the first fixing structure.

[0020] According to another aspect of the present application, an abrasion testing system is provided, comprising: the abrasion testing device as described above; and a control unit connected with the pressure detecting structure, and the control unit is used for receiving the pressure signal transmitted by the pressure detecting structure, and is capable of controlling the rotating speed of the first fixing structure.

[0021] Further, the abrasion testing system comprises a plurality of abrasion testing devices which are arranged at intervals, and the plurality of pressure detecting structures of the plurality of abrasion testing devices are connected with the control unit.

[0022] According to the technical scheme of the present application, the first fixing structure is used for fixing the first measured member. The second fixing structure is used for fixing the second measured member. The first fixing structure and the second fixing structure are arranged at intervals, so that the first measured member and the second measured member can be conveniently installed, and the abrasion testing of the first measured member and the second measured member can be facilitated. The first fixing structure is movable relative to the supporting structure along the vertical direction, and under the driving of the first fixing structure, the first measured member can move along the vertical direction, so that the first measured member can approach or move away from the second measured member, thereby the first measured member can abut against the second measured member. When the first measured member abuts against the second measured member, the pressure between the first measured member and the second measured member can be transmitted to the pressure detecting structure through the second fixing structure. The pressure between the first measured member and the second measured member can be detected through the pressure detecting structure. The first fixing structure is rotatable relative to the supporting structure, and under the driving of the first fixing structure, the first measured member can rotate. When the first measured member abuts against the second measured member at a predetermined pressure, the first measured member is driven to rotate by the first fixing structure, so that the first measured member can rotate relative to the second measured member at a predetermined rotating speed, thereby the abrasion testing of the first measured member and the second measured member can be carried out under the conditions of the predetermined pressure and the predetermined rotating speed, so that the test environment is more consistent with the actual working environment of the measured member, and the abrasion resistance of the material can be accurately reflected. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification. The drawings illustrate one illustrative embodiment of the application and, together with the description, serve to explain the application. In the drawings:

[0024] Figure 1 shows a structural schematic diagram of an embodiment of the abrasion testing device according to the present application;

[0025] Figure 2 shows a cross-sectional view of the abrasion testing device of Figure 1 ;

[0026] Figure 3 shows a partial structural schematic diagram of the abrasion testing device of Figure 1 ;

[0027] Figure 4 shows a cross-sectional view of the partial structure of the abrasion testing device of Figure 3 ;

[0028] Figure 5 shows a cross-sectional view of the pressure application structure of Figure 4 ;

[0029] Figure 6 shows another partial structural schematic diagram of the abrasion testing device of Figure 1 ;

[0030] Figure 7 shows a cross-sectional view of the another partial structure of the abrasion testing device of Figure 6 ;

[0031] Figure 8 shows yet another partial structural schematic diagram of the abrasion testing device of Figure 1 ;

[0032] Figure 9 shows a structural schematic diagram of an embodiment of the abrasion testing system according to the present application; and

[0033] Figure 10 shows a schematic diagram of the abrasion testing system of Figure 9 ;

[0034] wherein the above-described drawings include the following reference signs:

[0035] 10, support structure; 11, test box; 12, first through hole; 13, second through hole; 14, test cavity; 15, box body; 16, box door; 18, support seat; 181, base; 182, support piece; 20, first fixing structure; 21, protrusion; 30, first measured piece; 40, second fixing structure; 41, first fixing part; 42, second fixing part; 43, second mounting hole; 50, second measured piece; 60, pressure detection structure; 70, pressure application structure; 71, first cylinder; 72, second cylinder; 73, first mounting hole; 74, first limiting hole; 75, mounting plate; 76, avoiding hole; 80, driving structure; 90, first locking piece; 100, elastic piece; 110, second limiting piece; 120, pressure conduction structure; 121, conduction block; 122, conduction bead; 150, abrasion testing device; 160, positioning block; 170, second sealing piece; 180, abutting piece. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0037] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as that generally understood by those skilled in the art to which the present application belongs.

[0038] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0039] The present application and the embodiments of the present application provide an abrasion testing device and an abrasion testing system.

[0040] As Figure 1 and Figure 2As shown, in the embodiment of the present application, the wear testing device comprises a support structure 10, a first fixing structure 20, a second fixing structure 40 and a pressure detection structure 60, the first fixing structure 20 is used for fixing a first measured member 30; the second fixing structure 40 is used for fixing a second measured member 50; wherein the first fixing structure 20 and the second fixing structure 40 are arranged in a vertical direction on the support structure 10, the first fixing structure 20 is movably arranged in the vertical direction relative to the support structure 10, so that the first measured member 30 can abut against the second measured member 50 with a predetermined pressure; and the first fixing structure 20 is rotatably arranged relative to the support structure 10, so that the first measured member 30 can rotate relative to the second measured member 50 with a predetermined rotating speed; and the pressure detection structure 60 is arranged on the support structure 10, the second fixing structure 40 abuts against or is connected with the pressure detection structure 60, and the pressure detection structure 60 is used for detecting the pressure between the first measured member 30 and the second measured member 50.

[0041] In the above arrangement, the first fixing structure 20 is used for fixing the first measured member 30. The second fixing structure 40 is used for fixing the second measured member 50. The first fixing structure 20 and the second fixing structure 40 are arranged in a spaced manner, so that the first measured member 30 and the second measured member 50 can be conveniently installed, and the wear testing of the first measured member 30 and the second measured member 50 can be facilitated.

[0042] The first fixing structure 20 is movably arranged in the vertical direction relative to the support structure 10, under the driving of the first fixing structure 20, the first measured member 30 can move in the vertical direction, so that the first measured member 30 can approach or move away from the second measured member 50, thereby the first measured member 30 can abut against the second measured member 50.

[0043] The first measured member 30 abuts against the second measured member 50, and the pressure between the first measured member 30 and the second measured member 50 can be transmitted to the pressure detection structure 60 through the second fixing structure 40. The pressure between the first measured member 30 and the second measured member 50 can be detected through the pressure detection structure 60.

[0044] The first fixing structure 20 is rotatably arranged relative to the support structure 10, under the driving of the first fixing structure 20, the first measured member 30 can rotate. After the first measured member 30 abuts against the second measured member 50 with a predetermined pressure, the first measured member 30 is driven to rotate by the first fixing structure 20, so that the first measured member 30 can rotate relative to the second measured member 50 with a predetermined rotating speed, thereby the wear testing of the first measured member 30 and the second measured member 50 can be performed under the conditions of the predetermined pressure and the predetermined rotating speed, so that the testing environment is consistent with the actual working environment of the measured member, and the wear resistance of the material can be accurately reflected.

[0045] The first fixing structure 20, the second fixing structure 40 and the pressure detection structure 60 are all arranged on the supporting structure 10, and the supporting structure 10 has the functions of mounting and supporting the first fixing structure 20, the second fixing structure 40 and the pressure detection structure 60.

[0046] In the embodiment of the present application, the wear testing device can ensure the wear test under different constant pressures and high-speed rotation conditions at the same time, is convenient to operate, simple in structure and low in cost.

[0047] Preferably, the first fixing structure 20 is a shaft structure.

[0048] In the embodiment of the present application, the pressure detection structure 60 is a pressure sensor.

[0049] As shown in Figure 1 , Figure 2 and Figure 8 , in the embodiment of the present application, the supporting structure 10 comprises a test box 11, the test box 11 defines a test cavity 14, a first through hole 12 and a second through hole 13, the first through hole 12 and the second through hole 13 both communicate with the test cavity 14; a first end of the first fixing structure 20 is arranged in the first through hole 12 and is in sealed connection with the first through hole 12, a second end of the first fixing structure 20 is located in the test cavity 14, and the first fixing structure 20 is movably arranged along the central axis of the first through hole 12; a first end of the second fixing structure 40 is arranged in the second through hole 13 and is in sealed connection with the second through hole 13, a second end of the second fixing structure 40 is located in the test cavity 14, so that the test cavity 14 forms a sealed cavity.

[0050] In the above arrangement, the test box 11 is provided with the test cavity 14, the first through hole 12 and the second through hole 13 which all communicate with the test cavity 14, the first fixing structure 20 is in sealed connection with the first through hole 12, the second fixing structure 40 is in sealed connection with the second through hole 13, and the test cavity 14 forms a sealed cavity. The first measured member 30 is connected with the second end of the first fixing structure 20, and the second measured member 50 is connected with the second end of the second fixing structure 40, that is, through the above arrangement, the first measured member 30 and the second measured member 50 can be located in the sealed test cavity 14. According to actual needs, the test cavity 14 can be filled with liquid for wear test, so that the test environment is more consistent with the actual working environment of the measured member, and the wear resistance of the material can be accurately reflected.

[0051] In the embodiment of the present application, the wear testing device can not only adjust the pressure and the rotation speed of the material wear surface according to actual conditions, but also ensure the wear test under constant pressure and high-speed conditions; and the wear test can be carried out in a liquid-filled environment, so that the test environment is more consistent with the actual working environment of the measured member, and the wear resistance of the material can be accurately reflected.

[0052] The wear testing device has the advantages of ingenious structure, easy operation, low cost, high reaction rate and small error.

[0053] As shown in Figure 1 and Figure 8 , the test box 11 includes a box body 15 and a box door 16 detachably connected with the box body 15, the first through hole 12, the second through hole 13 and the test cavity 14 are all arranged on the box body 15, and the box body 15 is further provided with a third through hole in communication with the test cavity 14, the box door 16 is arranged at the third through hole, and the box door 16 has an open position relative to the box body 15 and a closed position relative to the box body 15, when the box door 16 is in the closed position, the box door 16 seals the third through hole, so that the test cavity 14 forms a sealed cavity.

[0054] The first measured member 30 and the second measured member 50 can be conveniently taken out and put in through the box door 16.

[0055] Preferably, the box door 16 is detachably connected with the box body 15 through a locking member such as a screw.

[0056] Of course, in alternative embodiments of the present application, the box door 16 can also be pivotally connected with the box body 15 according to actual needs.

[0057] Preferably, the box body 15 is made of a metal material.

[0058] Preferably, the box door 16 is of a transparent structure. In this way, the situation in the test cavity 14 can be observed.

[0059] In the embodiments of the present application, the wear testing device further includes a first sealing member located between the box body 15 and the box door 16 to seal the gap between the box body 15 and the box door 16, and the first sealing member is arranged on the box body 15 or the box door 16.

[0060] As shown in Figure 1 , Figure 2 and Figure 8 , the support structure 10 further includes a support seat 18 connected with the test box 11, and the pressure detection structure 60 is arranged on the support seat 18, and the test box 11 is located above the pressure detection structure 60.

[0061] In the above arrangement, the support seat 18 has the functions of mounting and supporting the test box 11 and the pressure detection structure 60. The test box 11 is arranged above the pressure detection structure 60, so that the pressure detection structure 60 can detect the pressure between the first measured member 30 and the second measured member 50.

[0062] As shown in Figure 1 , Figure 2 and Figure 8As shown in the figure, in the embodiment of the present application, the support base 18 comprises a base 181 and two support members 182 arranged on the base 181, the pressure detection structure 60 is fixedly installed on the base 181 and located between the two support members 182, the base 181 is used for installing and supporting the pressure detection structure 60, and the box body 15 is installed on the two support members 182, and the two support members 182 are used for installing and supporting the box body 15.

[0063] Preferably, the pressure detection structure 60 is detachably connected with the base 181 through a locking member (such as a screw).

[0064] As shown in the figure, Figure 1 and Figure 8 As shown in the figure, in the embodiment of the present application, the support member 182 is a H-shaped structural member. The support member 182 is detachably connected with the base 181, such as being connected through a screw or the like. The support member 182 is detachably connected with the box body 15, such as being connected through a screw or the like.

[0065] As shown in the figure, Figure 2 to Figure 5 As shown in the figure, in the embodiment of the present application, the wear testing device further comprises a pressure applying structure 70, the pressure applying structure 70 is connected with the support structure 10 and movably arranged in a vertical direction relative to the support structure 10, and the pressure applying structure 70 is connected with the first fixed structure 20.

[0066] The support structure 10 is used for installing and supporting the pressure applying structure 70. Under the driving of the pressure applying structure 70, the first fixed structure 20 can move relative to the support structure 10, so that the pressure between the first measured member 30 and the second measured member 50 can be adjusted, and finally the first measured member 30 abuts against the second measured member 50 with a predetermined pressure.

[0067] The pressure detection structure 60 is used for detecting the pressure between the first measured member 30 and the second measured member 50. According to the detection value of the pressure detection structure 60, through the adjusting action of the pressure applying structure 70, the pressure between the first measured member 30 and the second measured member 50 can be accurately adjusted to a predetermined pressure, so as to meet the test condition.

[0068] As shown in the figure, Figure 2 As shown in the figure, in the embodiment of the present application, the support structure 10 has a first through hole 12, the pressure applying structure 70 is a cylindrical structure, the outer wall surface of the pressure applying structure 70 is threadedly matched with the inner wall surface of the first through hole 12, and the first end of the first fixed structure 20 is located in the inner cavity of the pressure applying structure 70.

[0069] Due to the threaded connection, the rotation of the pressure applying structure 70 relative to the first through hole 12 can be converted into the movement of the pressure applying structure 70 relative to the first through hole 12, so that the pressure applying structure 70 can be moved relative to the support structure 10 by screwing the pressure applying structure 70, and the first fixed structure 20 can be moved relative to the support structure 10.

[0070] The threaded connection is simple in structure and convenient to operate.

[0071] The pressure applying structure 70 is arranged in a cylindrical structure, which is convenient for arranging the support structure 10, the pressure applying structure 70 and the first fixed structure 20.

[0072] In the embodiment of the application, the pressure applying structure 70 is threadedly connected with the support structure 10, so that the wear test under different pressure states can be carried out, and the operation is convenient and the structure is simple.

[0073] Of course, in alternative embodiments of the application, a linear driving structure (such as a linear motor) can also be used as the pressure applying structure 70 of the application according to actual needs to drive the first fixed structure 20 to move.

[0074] As shown in Figure 1 to Figure 4 In the embodiment of the application, the wear testing device further comprises a driving structure 80, the driving structure 80 is connected with the pressure applying structure 70, part of the driving structure 80 is located in the inner cavity of the pressure applying structure 70, and the output shaft of the driving structure 80 is connected with the first fixed structure 20.

[0075] The pressure applying structure 70 is used for mounting and supporting the driving structure 80. The driving structure 80 is used for driving the first fixed structure 20 to rotate, so that the first measured member 30 can rotate at a predetermined rotational speed.

[0076] Part of the driving structure 80 and the first end of the first fixed structure 20 are located in the inner cavity of the pressure applying structure 70, so that the driving structure 80 and the first fixed structure 20 are connected.

[0077] Preferably, the driving structure 80 is detachably connected with the pressure applying structure 70. Preferably, the driving structure 80 and the pressure applying structure 70 are connected through a jackscrew.

[0078] In the embodiment of the application, the driving structure 80 is an electric motor.

[0079] In the embodiment of the application, an electric motor capable of providing a suitable rotational speed can be selected as the driving structure 80 of the application according to actual needs, so that the rotational speed of the first fixed structure 20 and the first measured member 30 can be adjusted in a large range.

[0080] As shown in Figure 1 andFigure 2 As shown, in an embodiment of the present invention, the wear testing device further includes a first locking member 90, which is connected to the pressure applying structure 70 to lock the pressure applying structure 70 onto the support structure 10.

[0081] The first locking member 90 can lock the pressure application structure 70 onto the support structure 10, preventing the pressure application structure 70 from coming loose from the support structure 10.

[0082] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the outer wall surface of the pressure applying structure 70 is provided with a first external thread, and the first locking member 90 is a nut, which is threadedly connected to the pressure applying structure 70.

[0083] The pressure application structure 70 can be tightened onto the support structure 10 by means of a nut, thereby achieving the locking and anti-loosening function of the first locking member 90.

[0084] like Figure 5 As shown in the embodiment of the present invention, the pressure applying structure 70 is a stepped structure, comprising a first cylinder 71 and a second cylinder 72 connected to the first cylinder 71. Along a direction perpendicular to the first cylinder 71 towards the second cylinder 72, the cross-sectional area of ​​the first cylinder 71 is larger than the cross-sectional area of ​​the second cylinder 72. A first mounting hole 73 is provided on the circumferential sidewall of the first cylinder 71. The pressure applying structure 70 and the driving structure 80 are detachably connected via a set screw and the first mounting hole 73. A first external thread is provided on the outer wall surface of the first cylinder 71 for threaded engagement with the inner wall thread of the first through hole 12. A second external thread is also provided on the outer wall surface of the first cylinder 71 for threaded connection with the first locking member 90. The first cylindrical body 71 is also provided with a first limiting hole 74, and the box body 15 is provided with a second limiting hole corresponding to the first limiting hole 74. A limiting rod is provided in the second limiting hole, and one end of the limiting rod extends into the first limiting hole 74. The first limiting hole 74 is an elongated hole. When the pressure applying structure 70 moves, the limiting rod moves along the first limiting hole 74. The first limiting hole 74, the second limiting hole, and the limiting rod together limit the extreme position of the movement of the pressure applying structure 70. The end of the second cylindrical body 72 away from the first cylindrical body 71 is provided with a mounting plate 75. The mounting plate 75 is provided with a clearance hole 76. The clearance hole 76 is used to avoid the first fixing structure 20, so that the first fixing structure 20 can extend into the inner cavity of the pressure applying structure 70. The mounting plate 75 is used to abut or connect with the elastic member 100. By setting the mounting plate, the contact area between the elastic member 100 and the pressure applying structure 70 can be increased to achieve better flexible abutment. The inner cavity of the first cylinder 71 is connected to the inner cavity of the second cylinder 72. The inner cavity of the pressure application structure 70 is a stepped cavity, which facilitates the arrangement of the drive structure 80 and the first fixed structure 20 and saves materials.

[0085] like Figure 2 As shown in the embodiment of the present invention, the first through hole 12 is a stepped through hole, which can adapt to actual needs and save materials.

[0086] In an embodiment of the present invention, the wear testing device further includes a first limiting member, which is disposed on the outer periphery of the first fixing structure 20. The first limiting member abuts against the pressure applying structure 70 and is used to prevent the first fixing structure 20 from moving relative to the pressure applying structure 70 along the extension direction of the rotation axis.

[0087] Since the first fixed structure 20 is rotatable relative to the supporting structure 10, it is prone to slight movement along the extension direction of the rotation axis during rotation. The first limiting member is used to prevent the first fixed structure 20 from moving along the extension direction of the rotation axis, thereby ensuring stable rotation of the first fixed structure 20.

[0088] Specifically, the first limiting member is disposed on the outer periphery of the first fixed structure 20 and abuts against the pressure applying structure 70. In other words, the first limiting member restricts the movement of the first fixed structure 20 relative to the pressure applying structure 70 in the extension direction along the rotation axis, thereby ensuring the stable rotation of the first fixed structure 20.

[0089] In some embodiments of the present invention, the first limiting member may be a protrusion disposed on the outer periphery of the first fixing structure 20.

[0090] like Figure 2 to Figure 4 As shown, in an embodiment of the present invention, the wear testing device further includes an elastic element 100. The elastic element 100 is disposed on the outer periphery of the first fixing structure 20 and is located between the first limiting member and the pressure applying structure 70. One end of the elastic element 100 abuts against the first limiting member, and the other end of the elastic element 100 abuts against the pressure applying structure 70.

[0091] By setting the elastic element 100, the first limiting element can flexibly abut against the pressure applying structure 70, avoiding the problem of component damage caused by rigid abutment.

[0092] Preferably, the elastic element 100 is a spring.

[0093] like Figure 3 and Figure 4 As shown in the embodiment of the present invention, the wear testing device further includes an abutment piece 180. One end of the elastic member 100 is connected to the abutment piece 180, and the abutment piece 180 abuts against the first limiting member to achieve the purpose of abutting the elastic member 100 against the first limiting member. By providing the abutment piece 180, the contact area between the elastic member 100 and the first limiting member can be increased, thereby improving the flexible abutment effect.

[0094] Of course, in alternative embodiments of this application, one end of the elastic member 100 may be connected to the first limiting member and the other end of the elastic member 100 may be connected to the pressure applying structure 70, depending on actual needs.

[0095] like Figure 2 to Figure 4 As shown, in an embodiment of the present invention, the wear testing device further includes a second limiting member 110. The second limiting member 110 is disposed on the outer periphery of the first fixing structure 20. The first fixing structure 20 is rotatably disposed relative to a portion of the second limiting member 110. The second limiting member 110 is located inside the first through hole 12 and contacts the inner wall surface of the first through hole 12.

[0096] During the rotation of the first fixed structure 20, it is easy for the first fixed structure 20 to wobble in a direction perpendicular to the rotation axis. The second limiting member 110 is connected to the first fixed structure 20 and contacts the inner wall surface of the first through hole 12. The second limiting member 110 can prevent the first fixed structure 20 from wobble in a direction perpendicular to the rotation axis of the first fixed structure 20, so that the first fixed structure 20 can rotate stably.

[0097] Meanwhile, since the second limiting member 110 is in contact with the inner wall surface of the first through hole 12, the first through hole 12 can be sealed to a certain extent by the second limiting member 110.

[0098] like Figure 2 to Figure 4 As shown in the embodiment of the present invention, along the rotation axis direction of the first fixed structure 20, a plurality of second limiting members 110 are provided on the outer wall surface of the first fixed structure 20, and the plurality of second limiting members 110 are spaced apart.

[0099] By providing multiple second limiting members 110, the effect of preventing the first fixed structure 20 from wobbling in a direction perpendicular to the rotation axis of the first fixed structure 20 can be improved. Preferably, the second limiting member 110 is a bearing.

[0100] In embodiments of the present invention, by providing a first limiting member and a second limiting member 110, the first fixed structure 20 can be made to rotate without axial and radial runout, thus ensuring stable rotation of the first fixed structure 20.

[0101] In an embodiment of the present invention, a positioning groove is provided on the outer wall surface of the first fixing structure 20, and the second limiting member 110 is installed in the positioning groove.

[0102] like Figure 2 to Figure 4 As shown in the embodiment of the present invention, there are two second limiting members 110. Along the rotation axis of the first fixed structure 20, the upper second limiting member 110 can both prevent radial swaying and act as the first limiting member to prevent axial swaying.

[0103] As shown in Figure 4 the embodiment of the present application, the first fixed structure 20 is provided with a protrusion 21 on part of the outer wall surface, one end of the elastic member 100 is abutted with the second limiting member 110 located above through the abutting piece 180, and the positioning and installation of the second limiting member 110 located above are realized under the joint action of the elastic member 100 and the protrusion 21. The wear testing device further comprises a positioning block 160, which is fixedly installed on the outer periphery of the first fixed structure 20, and the positioning block 160 and the protrusion 21 jointly form an above-mentioned positioning groove, which facilitates the installation of the second limiting member 110 located below.

[0104] As shown in Figure 2 , Figure 6 and Figure 7 the embodiment of the present application, the wear testing device further comprises a pressure conducting structure 120, one end of the pressure conducting structure 120 is connected with the pressure detecting structure 60, and the other end of the pressure conducting structure 120 is abutted with the second fixed structure 40.

[0105] In the above setting, the second fixed structure 40 transmits the pressure between the first measured member 30 and the second measured member 50 to the pressure conducting structure 120, and the pressure conducting structure 120 transmits the pressure to the pressure detecting structure 60, which facilitates the pressure detecting structure 60 to detect the pressure between the first measured member 30 and the second measured member 50.

[0106] Of course, in the alternative embodiment of the present application, the other end of the pressure conducting structure 120 can also be connected with the second fixed structure 40 according to actual needs.

[0107] As shown in Figure 7 the embodiment of the present application, the pressure conducting structure 120 comprises a conducting block 121 and a conducting bead 122, the conducting block 121 is connected with the pressure detecting structure 60, and the conducting block 121 and the second fixed structure 40 are both abutted with the conducting bead 122; the wear testing device further comprises a limiting structure for limiting the rolling of the conducting bead 122, and the conducting block 121 and the second fixed structure 40 are both connected with the limiting structure.

[0108] In the above setting, the pressure between the first measured member 30 and the second measured member 50 is transmitted to the pressure detecting structure 60 through the second fixed structure 40, the conducting bead 122 and the conducting block 121 in turn, so as to facilitate the detection of the pressure. Since the conducting block 121 and the second fixed structure 40 are both abutted with the conducting bead 122, the contact between the conducting block 121 and the conducting bead 122 and the contact between the second fixed structure 40 and the conducting bead 122 are close to point contact, so that the contact area can be reduced, the pressure can be better transmitted, and the detection result is more accurate.

[0109] The limiting structure is used to restrict the rolling of the conduction bead 122, ensuring that both the conduction block 121 and the second fixed structure 40 can abut against the conduction bead 122, thereby ensuring the pressure transmission effect and the detection effect.

[0110] Of course, in the embodiments of the present invention, the limiting structure is provided on the conductive block 121 or the second fixing structure 40.

[0111] In an embodiment of the present invention, the limiting structure includes a plurality of limiting blocks and a limiting groove. The plurality of limiting blocks are spaced apart on the second fixing structure 40. The limiting groove is disposed on the conducting block 121. Part of the structure of the limiting block is located in the limiting groove. The plurality of limiting blocks together restrict the conducting bead 122 within the limiting groove.

[0112] In the above configuration, the second fixing structure 40 is used to install and support multiple limiting blocks. All the limiting blocks can extend into the limiting groove, collectively confining the conduction bead 122 within the groove, thereby achieving the purpose of limiting the rolling of the conduction bead 122 by the limiting structure.

[0113] Preferably, the limiting groove is a straight groove, and there are two limiting blocks. The two limiting blocks extend into the limiting groove to confine the conductive bead 122 within the limiting groove.

[0114] like Figure 7 As shown in the embodiment of the present invention, the second fixing structure 40 is a stepped structure. The second fixing structure 40 includes a first fixing part 41 and a second fixing part 42 connected to the first fixing part 41. Along the direction perpendicular to the first fixing part 41 to the second fixing part 42, the cross-sectional area of ​​the first fixing part 41 is larger than the cross-sectional area of ​​the second fixing part 42. The first fixing part 41 is provided with a mounting groove, which is located on the side of the first fixing part 41 away from the second fixing part 42. The mounting groove is used to install and fix the second test piece 50. A plurality of limiting blocks are spaced apart on the side of the second fixing part 42 away from the first fixing part 41.

[0115] The mounting groove has a second mounting hole 43 on its circumferential sidewall, and the second test piece 50 can be detachably installed into the mounting groove by means of a set screw, which is threadedly connected to the second mounting hole 43.

[0116] like Figure 1 to Figure 4 As shown, in an embodiment of the present invention, the wear testing device further includes a drive structure 80, which is connected to the support structure 10 and is movably disposed relative to the support structure 10. The output shaft of the drive structure 80 is drivenly connected to the first fixed structure 20.

[0117] The driving structure 80 is used to drive the first fixing structure 20 to rotate, and under the driving of the driving structure 80, the first fixing structure 20 can be movable relative to the supporting structure 10, so as to facilitate the adjustment of the rotating speed and the position in the vertical direction of the first fixing structure 20.

[0118] Specifically, as shown in Figure 2 and Figure 4 , in the embodiment of the present application, the pressure applying structure 70 is fixedly connected with the driving structure 80 through a top pin; the driving structure 80 is connected with the first fixing structure 20 through a shaft coupling; the first fixing structure 20 is provided with two second limiting members 110, which can effectively prevent the first fixing structure 20 from jumping in the radial direction during rotation; the pressure applying structure 70 is abutted against the second limiting member 110 located above through the elastic member 100 and the abutting piece 180, which can effectively prevent the first fixing structure 20 from jumping in the axial direction during rotation; the second limiting member 110 located below is fixed by the protrusion 21 on the outer periphery of the first fixing structure 20 and the positioning block 160; the first measured member 30 is fixed on the first fixing structure 20 through a top pin; the second measured member 50 is fixed on the second fixing structure 40 through a top pin; the second fixing structure 40 is connected with the pressure detecting structure 60 through the pressure conducting structure 120.

[0119] As shown in Figure 9 and Figure 10 , in the embodiment of the present application, the wear testing system comprises a wear testing device 150 and a control part, the wear testing device 150 is the wear testing device described above; the control part is connected with the pressure detecting structure 60, and the control part is used to receive the pressure signal transmitted by the pressure detecting structure 60 and can control the rotating speed of the first fixing structure 20.

[0120] The pressure between the first measured member 30 and the second measured member 50 and the rotating speed of the first measured member 30 relative to the second measured member 50 can be adjusted through the control part.

[0121] Preferably, the control part is a computer.

[0122] It should be noted that, since the wear testing system of the present application comprises the wear testing device of the present application, the wear testing system of the present application also has the above-mentioned advantages of the wear testing device of the present application, which will not be described here again.

[0123] As shown in Figure 10 , in the embodiment of the present application, the wear testing system further comprises a capture card, the capture card is connected with the control part, and the capture card is connected with the pressure detecting structure 60 to collect the pressure signal and transmit the pressure signal to the control part, and the control part controls the rotating speed of the first fixing structure 20 through the capture card.

[0124] As shown in Figure 10As shown in the embodiment of the present application, the wear testing system further comprises a signal amplifier and a driver, the pressure detection structure 60 and the acquisition card are connected with the signal amplifier, and the acquisition card and the driving structure 80 of the wear testing device 150 are connected with the driver.

[0125] In the embodiment of the present application, the driving structure 80 is a motor, and the driver is a motor driver.

[0126] As shown in the embodiment of the present application, the wear testing system comprises a plurality of wear testing devices 150 arranged at intervals, and the plurality of pressure detection structures 60 of the plurality of wear testing devices 150 are connected with the control unit. Figure 9

[0127] By arranging the plurality of wear testing devices 150, the wear test can be simultaneously performed on the plurality of first measured members 30 and the plurality of second measured members 50, thereby improving the test efficiency.

[0128] As shown in the embodiment of the present application, in the wear testing system, the first measured member 30 is loaded by the pressure applying structure 70, the pressure between the first measured member 30 and the second measured member 50 is adjusted, the signal measured by the pressure detection structure 60 is transmitted to the signal amplifier, the signal amplifier converts the signal of the pressure detection structure 60 into a standard voltage signal, the voltage signal is transmitted to the control unit through the acquisition card until the predetermined pressure is reached, the control unit sends a working instruction to the driver through the acquisition card, the driver processes the received signal and outputs it to the driving structure 80, so that the driving structure 80 operates at a predetermined speed, and the control unit integrates and collects the pressure signal and the speed signal of the driving structure 80, and draws the speed-pressure curve at different times, thereby providing data support for analyzing the wear characteristics of the measured member. Figure 1 Figure 2 Figure 10 As shown in the embodiment of the present application, in the wear testing system, the first measured member 30 is loaded by the pressure applying structure 70, the pressure between the first measured member 30 and the second measured member 50 is adjusted, the signal measured by the pressure detection structure 60 is transmitted to the signal amplifier, the signal amplifier converts the signal of the pressure detection structure 60 into a standard voltage signal, the voltage signal is transmitted to the control unit through the acquisition card until the predetermined pressure is reached; the control unit sends a working instruction to the driver through the acquisition card, the driver processes the received signal and outputs it to the driving structure 80, so that the driving structure 80 operates at a predetermined speed; the control unit integrates and collects the pressure signal and the speed signal of the driving structure 80, and draws the speed-pressure curve at different times, thereby providing data support for analyzing the wear characteristics of the measured member.

[0129] In the embodiment of the present application, the operation process of the wear testing system is as follows:

[0130] 1. The pressure detection structure 60 and the pressure conducting structure 120 are installed on the support structure 10, and the outer periphery of the second fixing structure 40 is provided with a second sealing member 170 (preferably, the second sealing member 170 is a sealing ring), which can seal the second through hole 13 and prevent the liquid in the test cavity 14 from leaking out of the second through hole 13.

[0131] 2. Open the box door 16.

[0132] 3. Install the first measured member 30 and the second measured member 50 in the test cavity 14.

[0133] 4. Close the box door 16, and a sealing ring is arranged between the box door 16 and the box body 15. ​​​

[0134] 5. Add solution from the top of the tank 15 through the first hole 12.

[0135] 6. Install the driving structure 80 and the pressure applying structure 70.

[0136] 7. Observe the pressure curve in the computer, gradually rotate the pressure applying structure 70 to make the axial force reach the expected value to be loaded (i.e. the predetermined pressure), and lock it with the fixing nut to keep the axial force.

[0137] 8. Set the rotating speed and the time length to conduct the wear test.

[0138] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects: The first fixing structure is used for fixing the first measured member. The second fixing structure is used for fixing the second measured member. The first fixing structure and the second fixing structure are arranged at intervals, so that the first measured member and the second measured member can be conveniently installed and subjected to wear testing. The first fixing structure is movable in the vertical direction relative to the support structure, and under the driving of the first fixing structure, the first measured member can move in the vertical direction, so that the first measured member can approach or move away from the second measured member, thereby enabling the first measured member to abut against the second measured member. When the first measured member abuts against the second measured member, the pressure between the first measured member and the second measured member can be transmitted to the pressure detection structure through the second fixing structure. The pressure between the first measured member and the second measured member can be detected through the pressure detection structure. The first fixing structure is rotatable relative to the support structure, and under the driving of the first fixing structure, the first measured member can rotate. After the first measured member abuts against the second measured member at a predetermined pressure, the first measured member is driven to rotate by the first fixing structure, so that the first measured member can rotate relative to the second measured member at a predetermined rotating speed, thereby enabling the first measured member and the second measured member to be subjected to wear testing under the conditions of the predetermined pressure and the predetermined rotating speed, so that the test environment is more consistent with the actual working environment of the measured member, and thus the wear resistance of the material can be accurately reflected. The first fixing structure, the second fixing structure and the pressure detection structure are all arranged on the support structure, and the support structure has the functions of installing and supporting the first fixing structure, the second fixing structure and the pressure detection structure.

[0139] Obviously, the above-mentioned embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0140] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, as the scope of the exemplary embodiments of this application is limited only by the appended claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Also, unless otherwise indicated herein, the materials described herein can be used in a variety of applications.

[0141] It should be noted that the terms "first", "second", and the like, as used in the description and the claims herein are intended to modify a particular disclosed embodiment unless otherwise indicated, but do not imply that the architecture having such designation must be the first or second among its field or order of importance. It is also to be understood that the use of the terms "first", "second", etc., herein does not imply a certain sequence or chronology of one embodiment over another but rather "first" can be understood as having occurred before "second", and "second" is understood as occurring then after the "first", and both can be understood as occurring simultaneously or over the same time period.

[0142] The preferred embodiments of the application are described above in detail. The application is not limited to the embodiments described herein but can vary within the scope of the application, which is limited only by the claims. Accordingly, any and all equivalents originating from the use of similar technical characteristics for achieving the same results are considered within the scope of the application.

Claims

1. A wear testing device, characterized by The wear testing device comprises: a support structure (10); a first fixing structure (20) for fixing a first measured member (30); a second fixing structure (40) for fixing a second measured member (50); wherein the first fixing structure (20) and the second fixing structure (40) are arranged on the support structure (10) in a vertical direction, the first fixing structure (20) is movably arranged in the vertical direction relative to the support structure (10) to enable the first measured member (30) to abut against the second measured member (50) with a predetermined pressure, and the first fixing structure (20) is rotatably arranged relative to the support structure (10) to enable the first measured member (30) to rotate relative to the second measured member (50) with a predetermined rotational speed; and a pressure detection structure (60) arranged on the support structure (10), the second fixing structure (40) abuts against or is connected to the pressure detection structure (60), and the pressure detection structure (60) is used for detecting the pressure between the first measured member (30) and the second measured member (50); the wear testing device further comprises a pressure applying structure (70) connected to the support structure (10) and movably arranged in the vertical direction relative to the support structure (10), and the pressure applying structure (70) is connected to the first fixing structure (20); the wear testing device further comprises a first limiting member arranged at the outer periphery of the first fixing structure (20), the first limiting member abuts against the pressure applying structure (70), and the first limiting member is used for preventing the first fixing structure (20) from moving along the extension direction of the rotational axis relative to the pressure applying structure (70); the wear testing device further comprises an elastic member (100) arranged at the outer periphery of the first fixing structure (20) and located between the first limiting member and the pressure applying structure (70), one end of the elastic member (100) abuts against or is connected to the first limiting member, and the other end of the elastic member (100) abuts against or is connected to the pressure applying structure (70); the wear testing device further comprises an abutting piece (180), one end of the elastic member (100) is connected to the abutting piece (180), and the abutting piece (180) abuts against the first limiting member.

2. The wear testing device of claim 1, wherein, The support structure (10) comprises a test box (11) defining a test cavity (14), a first through hole (12), and a second through hole (13), the first through hole (12) and the second through hole (13) both communicate with the test cavity (14); a first end of the first fixing structure (20) is arranged in the first through hole (12) and is sealingly connected to the first through hole (12), a second end of the first fixing structure (20) is located in the test cavity (14), and the first fixing structure (20) is movably arranged along the central axis of the first through hole (12); The first end of the second fixing structure (40) is arranged in the second through hole (13) and is in sealed connection with the second through hole (13), and the second end of the second fixing structure (40) is located in the test cavity (14), so that the test cavity (14) forms a sealed cavity.

3. The wear testing device of claim 1, wherein, The support structure (10) has a first through hole (12), the pressure applying structure (70) is a cylinder structure, and the outer wall surface of the pressure applying structure (70) is in threaded cooperation with the inner wall surface of the first through hole (12); and the first end of the first fixing structure (20) is located in the inner cavity of the pressure applying structure (70).

4. The wear testing device of claim 3, wherein, The wear testing device further comprises a driving structure (80) connected with the pressure applying structure (70), part of the driving structure (80) is located in the inner cavity of the pressure applying structure (70), and the output shaft of the driving structure (80) is connected with the first fixing structure (20).

5. The wear testing device of claim 1, wherein, The wear testing device further comprises a first locking member (90) connected with the pressure applying structure (70) to lock the pressure applying structure (70) on the support structure (10).

6. The wear testing device of claim 5, wherein, The outer wall surface of the pressure applying structure (70) is provided with a first external thread, and the first locking member (90) is a nut which is in threaded connection with the pressure applying structure (70).

7. The wear testing device of claim 2, wherein, The wear testing device further comprises a second limiting member (110) arranged at the outer periphery of the first fixing structure (20), and the first fixing structure (20) is rotatably arranged relative to part of the second limiting member (110), and the second limiting member (110) is located in the first through hole (12) and in contact with the inner wall surface of the first through hole (12).

8. The wear testing device according to claim 7, characterized in that, a plurality of second limiting members (110) are arranged on the outer wall surface of the first fixing structure (20) along the direction of the rotation axis of the first fixing structure (20), and the plurality of second limiting members (110) are arranged at intervals; or a positioning groove is arranged on the outer wall surface of the first fixing structure (20), and the second limiting member (110) is arranged in the positioning groove; or the second limiting member (110) is a bearing.

9. The wear testing device of claim 1 or 2, wherein, The wear testing device further comprises a pressure conducting structure (120), one end of the pressure conducting structure (120) is connected with the pressure detecting structure (60), and the other end of the pressure conducting structure (120) is in abutment or connection with the second fixing structure (40).

10. The wear testing device of claim 9, wherein, The pressure conducting structure (120) comprises a conducting block (121) and a conducting bead (122), the conducting block (121) is connected with the pressure detecting structure (60), and the conducting block (121) and the second fixing structure (40) are both in abutment with the conducting bead (122); The abrasion testing device further comprises a limiting structure for limiting the rolling of the conductive beads (122), the limiting structure being arranged on the conductive block (121) and / or the second fixing structure (40).

11. The wear testing device of claim 10, wherein, The limiting structure comprises: a plurality of limiting blocks arranged at intervals on the second fixing structure (40); a limiting groove arranged on the conductive block (121), and part of the structure of the limiting blocks being located in the limiting groove, the plurality of limiting blocks collectively limiting the conductive beads (122) in the limiting groove.

12. The wear testing device of claim 2, wherein, The support structure (10) further comprises a support seat (18) connected with the testing box (11), the pressure detection structure (60) being arranged on the support seat (18), and the testing box (11) being located above the pressure detection structure (60).

13. The wear testing device of claim 1 or 2, wherein, The abrasion testing device further comprises a driving structure (80), the driving structure (80) being connected with the support structure (10) and being movably arranged relative to the support structure (10), and an output shaft of the driving structure (80) being drivingly connected with the first fixing structure (20).

14. A wear testing system characterized by, Comprise: an abrasion testing device (150), the abrasion testing device being as claimed in any one of claims 1 to 13; a control unit connected with the pressure detection structure (60), the control unit being used for receiving the pressure signal transmitted by the pressure detection structure (60) and being capable of controlling the rotating speed of the first fixing structure (20).

15. The wear testing system of claim 14, wherein, The abrasion testing system comprises a plurality of abrasion testing devices (150) arranged at intervals, and the plurality of pressure detection structures (60) of the plurality of abrasion testing devices (150) are all connected with the control unit.

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