Abrasion test platform and abrasive particle abrasion test method

Abstract

The invention relates to the technical field of friction tests, and particularly discloses a wear test platform and an abrasive wear test method.The wear test platform comprises a supporting plate, a sand box and a test mechanism, the sand box is fixedly arranged on the supporting plate and provided with a containing cavity, and a test hole communicated with the containing cavity is formed in one side wall, in the first horizontal direction, of the sand box; a standard sand pile is placed in the accommodating cavity; the upper surface of the standard sand pile in the vertical direction is higher than the test hole; the testing mechanism comprises a supporting seat and a driving assembly, the supporting seat is fixedly arranged on the supporting plate, the driving assembly is arranged on the supporting seat, and the driving assembly is configured to drive the testing piece to penetrate through the testing hole in a reciprocating mode so that the testing piece can reciprocate in the standard sand pile. Abrasion testing is carried out on a test piece through the abrasion testing platform, and the abrasion testing platform has the advantages of being high in controllability, good in economical efficiency, repeatability and visual in result.

Description

Technical Field

[0001] The invention relates to the technical field of friction testing, and in particular to a wear testing platform and an abrasive wear testing method. Background Art

[0002] In mechanical systems, various mechanical parts will gradually wear out after long-term use and friction, resulting in performance degradation and shortened life. This wear will not only reduce the efficiency and reliability of the mechanical system, but may also cause serious failures and safety accidents.

[0003] Mechanical wear includes many types, such as abrasive wear, fatigue wear, corrosive wear, adhesive wear, etc. Among them, abrasive wear is the most common type, which refers to the wear caused by the rolling, sliding or impact of granular materials such as sand, slag and coal ash on the mechanical surface.

[0004] Therefore, it is particularly important to conduct wear tests on mechanical equipment in the early stage of mass production. Existing mechanical wear includes many types, such as abrasive wear, fatigue wear, corrosive wear, adhesive wear, etc. Among them, abrasive wear is the most common type, which refers to the wear caused by the rolling, sliding or impact of granular materials such as sand, slag, and coal ash on the surface of the machine.

[0005] Mechanical wear tests currently include:

[0006] Indoor abrasive wear test is a common test method to simulate the wear effect of abrasives on materials. The following are some common abrasive wear tests: ① Wheel-wheel wear test: using two abrasive wheels to wear the sample, it can simulate wheel-wheel wear, wheel-rail wear and other conditions; ② Sandpaper wear test: sticking the sample on sandpaper, and wearing the sample with the abrasive on the surface of the sandpaper, it can simulate the conditions of grinding paper and grinding plate; ③ Internal cycle wear test: in a closed container, the sample and abrasive are mixed and then worn in a cycle, which can simulate the conditions of mortar pumps and cement delivery pipelines; ④ Particle flow wear test: placing the sample in a particle flow for wear, it can simulate the conditions of rock crushers and mining machinery; ⑤ Rotating disk wear test: fixing the sample on a rotating disk, and wearing it with abrasives, it can simulate the conditions of friction plates and clutches.

[0007] Indoor abrasive wear test method is a common method for evaluating the wear performance of wear-resistant materials. This method can be tested under the working conditions of simulating the actual mechanical system, and the wear amount and surface morphology of the sample can be measured to evaluate the wear performance of the wear-resistant material. It has the following advantages: ① High precision: The mechanical wear test method can provide very accurate wear data, which can be used to compare the wear performance between different materials and lubricants; ② Simulation of real working conditions: The mechanical wear test method can be tested under the working conditions of simulating the real mechanical system, so the wear performance of materials and lubricants can be evaluated more accurately; ③ Good repeatability: The test results of the mechanical wear test method have good repeatability, so it can be used to study the long-term wear performance of materials and lubricants; ④ Wide range: The mechanical wear test method can be used to evaluate the wear performance of different types of materials and lubricants, so it has a wide range of applications. However, the above test methods cannot meet the real working conditions of the test piece, which results in poor reliability of the test data.

[0008] The verification method of the shovel test of engineering machinery mainly includes the test method, the simulation method, and the combination of test and simulation. ① The test method is a common evaluation method. A large number of tests are carried out in the laboratory or on site to verify the wear life of wear-resistant accessories. The advantage of this method is that it can directly measure the wear amount of the accessories and obtain more accurate results, but the disadvantages are also obvious. The test cost is relatively high and the test time is relatively long. ② The simulation method is to evaluate the wear life of wear-resistant accessories through computer simulation. By modeling the working conditions, material characteristics, accessories materials and other parameters of the shovel, and simulating and analyzing the model, the wear condition of the accessories can be obtained, thereby evaluating its wear life. The advantage of this method is that the cost is low and the results can be obtained quickly, but the accuracy of the results may be limited by the accuracy of the model. ③ The method of combining test and simulation can use the actual data obtained from the test to verify the accuracy of the simulation model, and on this basis, evaluate the wear life of the wear-resistant accessories. The advantage of this method is that it can combine test and simulation to make full use of the advantages of the two methods, but it also requires corresponding costs and time.

[0009] There is an urgent need to build a wear test platform and conduct wear test bench tests to address the shortcomings of the above two solutions. Summary of the invention

[0010] The purpose of the present invention is to provide a wear test platform and an abrasive wear test method to solve the problems of poor controllability, poor economy, poor repeatability and unintuitive results of existing test devices in the related art.

[0011] In one aspect, the present invention provides a wear test platform, comprising:

[0012] Support plate;

[0013] A sand box, the sand box is fixed to the support plate, the sand box is provided with a containing cavity, a side wall of the sand box along a first horizontal direction is provided with a test hole connected to the containing cavity, the containing cavity is used to place a standard sand pile; and the upper surface of the standard sand pile along the vertical direction is higher than the test hole;

[0014] The testing mechanism includes a support seat and a driving assembly, wherein the support seat is fixed to the support plate, and the driving assembly is arranged on the support seat. The driving assembly is configured to drive the test piece to be inserted into the test hole and enter the accommodating cavity so that the test piece can reciprocate in the standard sand pile.

[0015] As a preferred technical solution of the wear test platform, the driving assembly is pivotally connected to the support seat via a first pivot axis, the axial direction of the first pivot axis is arranged along a second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction;

[0016] A plurality of the test holes are arranged along the vertical direction, and the driving assembly swings relative to the support seat so that the test piece is opposite to one of the plurality of the test holes along the moving direction of the test piece.

[0017] As an optimal technical solution for the wear testing platform, the support seat includes two vertical plates, and the two vertical plates are fixed on the support plate at intervals along the second horizontal direction. The driving assembly includes a base, the first pivot axis and a driving member, the base is arranged between the two vertical plates, the first pivot axis passes through the base and the two vertical plates, and the driving member is arranged on the base and is used to drive the test piece to reciprocate.

[0018] As a preferred technical solution of the wear test platform, the vertical plate is provided with a plurality of first pin holes at intervals around the axis of the first pivot axis, the base is provided with a second pin hole along the second horizontal direction, the second pin hole is opposite to one of the plurality of first pin holes, so that the test piece is opposite to one of the plurality of test holes along the reciprocating motion direction of the test piece;

[0019] The driving assembly further includes a first pin shaft, and the first pin shaft is penetrated through one of the first pin holes and the second pin hole corresponding thereto.

[0020] As a preferred technical solution of the wear test platform, the first pin hole and the second pin hole are respectively located on one side of the first pivot axis, the vertical plate is located on the other side of the first pivot axis and a plurality of third pin holes are arranged at intervals around the axis of the first pivot axis, the base is provided with a fourth pin hole along the second horizontal direction, the second pin hole is opposite to one of the plurality of first pin holes, so that the fourth pin hole is opposite to one of the plurality of third pin holes;

[0021] The driving assembly also includes a second pin shaft, and the second pin shaft is penetrated by one of the third pin holes and the corresponding fourth pin hole.

[0022] As a preferred technical solution of the wear test platform, the driving assembly further comprises a pivot seat, and the pivot seat is provided at one end of the base away from the sand box;

[0023] The fixing portion of the driving member is pivotally connected to the pivot seat via a second pivot shaft, and the axis of the second pivot shaft is arranged along the second horizontal direction. The telescopic portion of the driving member is used to drive the test member to reciprocate.

[0024] As an optimal technical solution for the wear testing platform, the driving assembly also includes a slide rail and a slider. The slide rail is laid on one end of the base close to the sand box. The extension direction of the slide rail is perpendicular to the axis of the first pivot shaft. The slider slides in cooperation with the slide rail. The slider is used to fix the test piece, and the telescopic part is used to drive the slider to slide on the slide rail.

[0025] As a preferred technical solution of the wear testing platform, the telescopic portion is pivotally connected to the sliding block via a third pivot axis, and the axis of the third pivot axis is arranged along the second horizontal direction.

[0026] On the other hand, the present invention provides an abrasive wear test method, which is performed by the wear test platform in any of the above schemes, specifically comprising:

[0027] S10: Before the test, the test piece is cleaned, three-dimensionally scanned and modeled, and weighed to obtain original pre-experimental data;

[0028] S20: installing the test piece on a wear test platform;

[0029] S30: After the wear test platform is set up, testing is performed;

[0030] S40: During the test, the wear condition of the test piece is recorded once every preset time interval a;

[0031] S50: After the test, the test piece is cleaned again, subjected to three-dimensional scanning modeling and weighed;

[0032] S60: Analyze the data before, during and after the test.

[0033] As a preferred technical solution of the abrasive wear test method, the driving assembly is pivotally connected to the support seat through a first pivot axis, and the axial direction of the first pivot axis is arranged along a second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction; a plurality of the test holes are arranged along the vertical direction, and the driving assembly swings relative to the support seat so that the test piece is opposite to one of the plurality of the test holes along the moving direction of the test piece;

[0034] S30 specifically includes:

[0035] S301: placing the standard sand pile in the sand box so that the height of the standard sand pile exceeds the test hole;

[0036] S302: adjusting the angle of the driving assembly relative to the support seat so that the angle at which the test piece is inserted into the standard sand pile meets a preset requirement;

[0037] S303: Adjust the frequency and duration of the reciprocating motion of the test piece driven by the driving assembly.

[0038] The beneficial effects of the present invention are:

[0039] The present invention provides a wear test platform and an abrasive wear test method, wherein the wear test platform comprises a support plate, a sand box and a test mechanism, wherein the sand box is fixedly mounted on the support plate, the sand box is provided with a receiving cavity, a side wall of the sand box along a first horizontal direction is provided with a test hole connected to the receiving cavity, the receiving cavity is used to place a standard sand pile; and the upper surface of the standard sand pile along the vertical direction is higher than the test hole; the test mechanism comprises a support seat and a drive assembly, wherein the support seat is fixedly mounted on the support plate, the drive assembly is arranged on the support seat, and the drive assembly is configured to drive the test piece to be inserted into the test hole and enter the receiving cavity, so that the test piece reciprocates in the standard sand pile. When the wear test platform is used to perform a wear test on the test piece, firstly, a standard sand pile is placed in the sand box, and the height of the standard sand pile exceeds the height of the test hole. The purpose of the setting is to simulate the daily working scene of the test piece, and the test piece is fixed on the drive assembly, and then according to the reciprocating frequency and working time of the set drive assembly to the test piece, the drive assembly drives the test piece to be inserted into the test hole and enter the receiving cavity, so that the test piece reciprocates in the standard sand pile. In this process, the test piece switches between inserting into and pulling out from the standard sand pile, thereby realizing the wear test of the test piece. The wear test platform has the advantages of strong controllability, good economy, high repeatability and intuitive results. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of the wear test platform in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of the support base in an embodiment of the present invention;

[0042] Figure 3 It is a structural schematic diagram of a base in an embodiment of the present invention;

[0043] Figure 4 It is a schematic diagram of the assembly of the slide rail and the slider in the embodiment of the present invention;

[0044] Figure 5 It is a structural schematic diagram of a sand box in an embodiment of the present invention;

[0045] Figure 6 Flow chart of the abrasive wear testing method in an embodiment of the present invention.

[0046] In the figure:

[0047] X, first horizontal direction; Y, second horizontal direction; Z, vertical direction;

[0048] 100. Test piece;

[0049] 1. Support plate;

[0050] 2. Sand box; 21. Sand box body; 211. Accommodating chamber; 212. Test hole; 22. Blocking door;

[0051] 3. Test mechanism; 31. Support seat; 311. Vertical plate; 3111. First pin hole; 3112. Third pin hole; 3113. First pivot groove; 312. Pressure strip; 313. Bottom plate; 314. First reinforcing plate; 3141. Second pivot groove; 315. Reinforcing rib plate; 316. Inclined plate; 317. Second reinforcing plate; 318. Third reinforcing plate; 32. Drive assembly; 322. Base; 3221. Second pin hole; 3222. Fourth pin hole; 323. Pivot seat; 324. Second pivot axis; 325. Slide rail; 3251. Fixed seat; 3252. Limit block; 326. Sliding block; 3261. Sliding portion; 3262. Fixed block; 3263. First fixed plate; 3264. Second fixed plate; 327. Third pivot axis; 328. First pin axis; 329. Second pin axis. DETAILED DESCRIPTION

[0052] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0056] like Figure 1 to Figure 5As shown, the present embodiment provides a wear test platform, which includes a support plate 1, a sand box 2 and a testing mechanism 3. The sand box 2 is fixedly mounted on the support plate 1. The sand box 2 is provided with a accommodating cavity 211. A side wall of the sand box 2 along the first horizontal direction X is provided with a test hole 212 connected to the accommodating cavity 211. The accommodating cavity 211 is used to place a standard sand pile; and the upper surface of the standard sand pile along the vertical direction Z is higher than the test hole 212; the testing mechanism 3 includes a support seat 31 and a driving assembly 32. The support seat 31 is fixedly mounted on the support plate 1, and the driving assembly 32 is arranged on the support seat 31. The driving assembly 32 is configured to drive the test piece 100 to insert into the test hole 212 and enter the accommodating cavity 211, so that the test piece 100 reciprocates in the standard sand pile. When the wear test platform is used to perform a wear test on the test piece 100, a standard sand pile is first placed in the sand box 2, and the height of the standard sand pile exceeds the height of the test hole 212. The purpose of this setting is to simulate the daily working scene of the test piece 100, fix the test piece 100 on the drive assembly 32, and then according to the reciprocating frequency and working time of the drive assembly 32 set for the test piece 100, the drive assembly 32 drives the test piece 100 to insert into the test hole 212 and enter the accommodating cavity 211, so that the test piece 100 reciprocates in the standard sand pile. In this process, the test piece 100 switches between inserting into the standard sand pile and pulling out from the standard sand pile, thereby realizing the test of the test piece 100.

[0057] Optionally, the driving assembly 32 is pivoted to the support seat 31 via a first pivot axis, the axial direction of the first pivot axis is arranged along the second horizontal direction Y, and the first horizontal direction X is perpendicular to the second horizontal direction Y; a plurality of test holes 212 are arranged along the vertical direction Z, and the driving assembly 32 swings relative to the support seat 31 so that the test piece 100 is opposite to one of the plurality of test holes 212 along the moving direction of the test piece 100. In this embodiment, in actual work of the engineering machinery, the attachments will work at different angles. Therefore, by adjusting the rotation angle of the driving assembly 32 relative to the support seat 31 around the first pivot axis, the driving assembly 32 can be adjusted to drive the test piece 100 to extend into different test holes 212, and the angle at which the test piece 100 is inserted into the standard sand pile can be adjusted to simulate the actual work, in which the engineering machinery drives the attachments to work at different angles.

[0058] Optionally, the support seat 31 includes two vertical plates 311, and the two vertical plates 311 are fixedly arranged on the support plate 1 at intervals along the second horizontal direction Y. The driving assembly 32 includes a base 322, a first pivot axis and a driving member. The base 322 is arranged between the two vertical plates 311, and the first pivot axis passes through the base 322 and the two vertical plates 311. The driving member is arranged on the base 322 and is used to drive the test piece 100 to reciprocate. In this embodiment, the two vertical plates 311 can support both ends of the first pivot axis, thereby improving the stability of the support for the driving assembly 32. Specifically, a first pivot groove 3113 is recessed along the vertical direction Z on one side of the vertical plate 311 away from the support plate 1, and both ends of the first pivot axis are respectively arranged in the first pivot grooves 3113 of the two vertical plates 311. The support seat 31 also includes two pressure strips 312, and the two pressure strips 312 are respectively fixed to the two vertical plates 311 and close the first pivot grooves 3113 on the two vertical plates 311. The groove walls of the pressure plate and the corresponding first pivot groove 3113 on the vertical plate 311 are arranged to form a pivot hole, and the first pivot axis is located in the pivot hole, thereby limiting the first pivot axis from escaping from the opening of the first pivot groove 3113.

[0059] Optionally, the support seat 31 also includes a bottom plate 313, two first reinforcing plates 314 and a plurality of reinforcing ribs 315. The bottom plate 313 is laid on the support plate 1 and fixedly connected to the support plate 1. The two vertical plates 311 are respectively fixedly connected to the bottom plate 313. The plurality of reinforcing ribs 315 are arranged on the opposite sides of the two vertical plates 311 and are respectively fixedly connected to the vertical plates 311 and the bottom plate 313. The plurality of reinforcing ribs 315 make the connection between the vertical plates 311 and the bottom plate 313 more secure.

[0060] The support seat 31 also includes two first reinforcing plates 314, which are respectively attached to the two vertical plates 311, and the first reinforcing plates 314 are provided with a second pivot groove 3141. The first pivot groove 3113 and the second pivot groove 3141 are arranged opposite to each other, and one end of the first pivot axis is located on the first pivot groove 3113 of one vertical plate 311 and the second pivot axis 324 of the first reinforcing plate 314 attached to the vertical plate 311, and the other end of the first pivot axis is located on the first pivot groove 3113 of the other vertical plate 311 and the second pivot groove 3141 of the first reinforcing plate 314 attached to the vertical plate 311. This arrangement can further enhance the stability of the support for the first pivot axis.

[0061] Optionally, the support seat 31 further includes an inclined plate 316, which is disposed between the two vertical plates 311 and is respectively fixed to the two vertical plates 311, and the inclined plate 316 is located between the driving assembly 32 and the bottom plate 313. In this embodiment, the inclined plate 316 and the reinforcing rib plate 315 jointly limit the two vertical plates 311, thereby preventing the vertical plates 311 from changing their angles relative to the bottom plate 313, thereby improving the stability of the vertical plates 311 supporting the first pivot axis.

[0062] Optionally, the vertical plate 311 is provided with a plurality of first pin holes 3111 at intervals around the axis of the first pivot axis, and the base 322 is provided with a second pin hole 3221 along the second horizontal direction Y, and the second pin hole 3221 is opposite to one of the plurality of first pin holes 3111, so that the test piece 100 is opposite to one of the plurality of test holes 212 along the reciprocating direction of the test piece 100; the driving assembly 32 further includes a first pin shaft 328, and the first pin shaft 328 is passed through a first pin hole 3111 and a second pin hole 3221 corresponding thereto. In this embodiment, when the second pin hole 3221 is opposite to one of the plurality of first pin holes 3111, at this time, the test piece 100 is opposite to one of the plurality of test holes 212 along the reciprocating direction of the test piece 100, and the first pin shaft 328 is passed through a first pin hole 3111 and a second pin hole 3221 corresponding thereto, so that the base 322 and the support seat 31 can be relatively fixed. Specifically, the angle between the line connecting two adjacent first pin holes 3111 and the first pivot axis may be 5°, 10°, 15°, 20°, etc., preferably 5°.

[0063] Optionally, the first pin hole 3111 and the second pin hole 3221 are respectively located on one side of the first pivot axis, the vertical plate 311 is located on the other side of the first pivot axis, and a plurality of third pin holes 3112 are arranged at intervals around the axis of the first pivot axis, the base 322 is provided with a fourth pin hole 3222 along the second horizontal direction Y, the second pin hole 3221 is opposite to one of the plurality of first pin holes 3111, so that the fourth pin hole 3222 is opposite to one of the plurality of third pin holes 3112; the driving assembly 32 also includes a second pin shaft 329, and the second pin shaft 329 is passed through a third pin hole 3112 and a corresponding fourth pin hole 3222. In this embodiment, after the second pin shaft 329 is passed through a first pin hole 3111 and a corresponding second pin hole 3221, at this time, the fourth pin hole 3222 is opposite to one of the multiple third pin holes 3112, and then the second pin shaft 329 is passed through a third pin hole 3112 and a corresponding fourth pin hole 3222. This setting can further enhance the relative fixed stability of the base 322 and the support seat 31.

[0064] Optionally, the support seat 31 also includes two second reinforcement plates 317 and two third reinforcement plates 318. The two second reinforcement plates 317 are respectively attached to the two vertical plates 311, and the multiple first pin holes 3111 on the vertical plates 311 penetrate the second reinforcement plates 317 attached to the vertical plates 311. The two ends of the first pin shaft 328 are respectively passed through the two second reinforcement plates 317 and the two vertical plates 311. This arrangement can further enhance the stability of the support seat 31 in limiting the first pin shaft 328, and prevent the vertical plates 311 from being deformed due to excessive force. The two third reinforcing plates 318 are respectively attached to the two vertical plates 311, and the multiple third pin holes 3112 on the vertical plates 311 pass through the third reinforcing plates 318 attached to the vertical plates 311. The two ends of the second pin shaft 329 are respectively passed through the two third reinforcing plates 318 and the two vertical plates 311. This arrangement can further enhance the stability of the support seat 31 limiting the second pin shaft 329, and prevent the vertical plate 311 from being deformed due to excessive force.

[0065] Optionally, the driving assembly 32 further includes a pivot seat 323, and the pivot seat 323 is provided at one end of the base 322 away from the sand box 2; the fixed portion of the driving member is pivoted to the pivot seat 323, and the axis of the second pivot shaft 324 between the fixed portion and the pivot seat 323 is arranged along the second horizontal direction Y, and the telescopic portion of the driving member is used to drive the test piece 100 to reciprocate. In this embodiment, if the fixed portion is fixedly connected to the pivot seat 323, when the force of the test piece 100 acting on the driving member is inconsistent with the telescopic direction of the telescopic portion, it is easy to cause damage to the driving member. To avoid this problem, the fixed portion of the driving member is further pivoted to the pivot seat 323. Specifically, the driving member is a power mechanism cylinder, the cylinder body of the power mechanism cylinder is the fixed portion, and the telescopic rod of the power mechanism cylinder is the telescopic portion. In other embodiments, the driving member may also be an electric cylinder, a pneumatic cylinder, a crank slider structure, etc.

[0066] Optionally, the driving assembly 32 further includes a slide rail 325 and a slider 326. The slide rail 325 is laid on one end of the base 322 close to the sand box 2. The extension direction of the slide rail 325 is perpendicular to the axis of the first pivot shaft. The slider 326 slidably cooperates with the slide rail 325. The slider 326 is used to fix the test piece 100, and the telescopic part is used to drive the slider 326 to slide on the slide rail 325. In this embodiment, the slide rail 325 and the slider 326 are provided to improve the stability of the reciprocating motion of the test piece 100. Specifically, the slide rail 325 includes a fixed seat 3251 and two limit blocks 3252. The fixed seat 3251 is fixed to the base 322. Two limit blocks 3252 are fixed on one side of the fixed seat 3251 away from the base 322. The two limit blocks 3252 and the fixed seat 3251 are arranged to form a slide groove with a T-shaped cross section. The slider 326 includes a sliding part 3261 and a fixed block 3262. The sliding part 3261 has a T-shaped cross section and is arranged in the slide groove. The sliding part 3261 can The fixing block 3262 includes a first fixing plate 3263 and a second fixing plate 3264, the first fixing plate 3263 is fixedly connected to the sliding portion 3261, a slot is recessed on the top wall of the first fixing plate 3263 away from the sliding portion 3261, and the test piece 100 is inserted into the slot, and the second fixing plate 3264 is detachably arranged on the top wall of the first fixing plate 3263 to achieve the clamping of the first fixing plate 3263 and the second fixing plate 3264 with the test piece 100. Optionally, the first fixing plate 3263 and the second fixing plate 3264 are detachably connected by bolts.

[0067] Optionally, the telescopic portion is pivotally connected to the slider 326, and the axis of the third pivot axis 327 of the telescopic portion and the slider 326 is arranged along the second horizontal direction Y. In this embodiment, if the telescopic portion is fixedly connected to the first fixed plate 3263, when the telescopic direction of the telescopic portion is inconsistent with the sliding direction of the first fixed plate 3263, it is easy to cause damage to the driving member or the slide rail 325. To avoid this problem, the telescopic portion is pivotally connected to the slider 326.

[0068] Optionally, the sand box 2 includes a sand box body 21 and a blocking door 22, the accommodating chamber 211 is located in the sand box body 21, and the opening of the accommodating chamber 211 is located on the top wall of the sand box body 21 along the vertical direction Z away from the support plate 1, the test hole 212 is located on a side wall of the sand box body 21 along the first horizontal direction X, and a discharge port is provided on a side wall of the sand box body 21 along the second horizontal direction Y close to the support plate 1, and the blocking door 22 is detachably provided on the sand box 2 and closes the discharge port.

[0069] like Figure 6 As shown, this embodiment also provides an abrasive wear test method, which is completed by the wear test platform in the above scheme.

[0070] Specifically include:

[0071] S10: Before the test, the test piece 100 is cleaned, three-dimensionally scanned and modeled, and weighed to obtain original pre-experimental data.

[0072] In this step, the test piece 100 is cleaned by ultrasonic vibration cleaning equipment, and this cleaning method can clean away impurities and rust stains attached to the surface of the test piece 100. The morphology of the test piece 100 before the test can be recorded by three-dimensional scanning modeling.

[0073] S20: Install the test piece 100 on the wear test platform.

[0074] S30: After the wear test platform is set up, testing is performed.

[0075] This step specifically includes the following steps for setting up the wear test platform:

[0076] S301 : placing a standard sand pile in the sand box 2 , and making the height of the standard sand pile exceed the height of the test hole 212 .

[0077] In this step, by adjusting the size of the sand in the standard sand pile and the height of the standard sand pile, the size of the sand in the working environment of the attachment and the pressure when the attachment is inserted into the standard sand pile can be simulated.

[0078] S302: Adjust the angle of the driving assembly 32 relative to the supporting seat 31 so that the angle at which the test piece 100 is inserted into the standard sand pile meets the preset requirements.

[0079] In this step, the working angle of the attachment can be simulated.

[0080] S303: Adjust the frequency and duration of the driving assembly 32 driving the test piece 100 to reciprocate.

[0081] In this step, the settings can simulate the time and frequency of the attachment working.

[0082] S40: During the test, the wear condition of the test piece 100 is recorded once at every preset time interval a.

[0083] In this step, the setting can record the intermediate state of the test piece 100 during the working process, and evaluate the wear of the test piece 100 in different time periods by recording the weight and surface morphology of the test piece 100.

[0084] S50: After the test, the test piece 100 is cleaned, three-dimensionally scanned and modeled, and weighed again.

[0085] In this step, the test piece 100 is cleaned by ultrasonic vibration cleaning equipment, and this cleaning method can clean away impurities and rust stains attached to the surface of the test piece 100. The morphology of the test piece 100 before the test can be recorded by three-dimensional scanning modeling.

[0086] S60: Analyze the data before, during and after the test.

[0087] This step is used to analyze the wear amount, surface morphology, etc. of the test piece 100, and finally obtain the wear rate of the test piece 100.

[0088] The test piece 100 is tested by the wear test platform and the abrasive wear test method used in conjunction with the above-mentioned wear test platform, and the test piece 100 is tested by the above-mentioned abrasive wear test method.

[0089] 1. Strong controllability: The wear test platform can strictly control the test conditions, such as the type of wear medium, wear speed, load, wear time, etc., so that the test results are more accurate and reliable.

[0090] 2. Economical and efficient: Compared with the test in the actual use environment, the wear test platform does not need to rely on the actual equipment operation and can complete the test in a shorter time, saving the test cost and time.

[0091] 3. Good test repeatability: The wear test platform is superior to the actual equipment operation test in terms of repeatability. It can conduct multiple tests and obtain stable results, thereby better evaluating the wear performance of wear-resistant materials.

[0092] 4. Intuitive results: Through the wear test platform, the wear degree of wear-resistant materials can be observed intuitively, and the wear morphology, wear mechanism, etc. can be deeply analyzed, providing an important experimental basis for the study of wear mechanism.

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Wear test platform, characterized in that, include: Support plate (1); A sand box (2), the sand box (2) being fixedly mounted on the support plate (1), the sand box (2) being provided with a receiving cavity (211), a side wall of the sand box (2) along a first horizontal direction (X) being provided with a test hole (212) connected to the receiving cavity (211), the receiving cavity (211) being used for placing a standard sand pile; and an upper surface of the standard sand pile along a vertical direction (Z) is higher than the test hole (212); The testing mechanism (3) comprises a support seat (31) and a driving assembly (32), wherein the support seat (31) is fixedly mounted on the supporting plate (1), and the driving assembly (32) is arranged on the support seat (31), and the driving assembly (32) is configured to drive the testing piece (100) to be inserted into the testing hole (212) and enter the containing cavity (211), so that the testing piece (100) performs reciprocating motion in the standard sand pile.

2. The wear test platform according to claim 1, characterized in that: The driving assembly (32) is pivotally connected to the support seat (31) via a first pivot axis, the axial direction of the first pivot axis is arranged along a second horizontal direction (Y), and the first horizontal direction (X) is perpendicular to the second horizontal direction (Y); A plurality of the test holes (212) are arranged along the vertical direction (Z), and the drive assembly (32) swings relative to the support seat (31) so that the test piece (100) is opposite to one of the plurality of test holes (212) along the moving direction of the test piece (100).

3. The wear test platform according to claim 2, characterized in that: The support seat (31) includes two vertical plates (311), and the two vertical plates (311) are fixedly arranged on the support plate (1) at intervals along the second horizontal direction (Y). The driving assembly (32) includes a base (322), the first pivot axis and a driving member. The base (322) is arranged between the two vertical plates (311), and the first pivot axis passes through the base (322) and the two vertical plates (311). The driving member is arranged on the base (322) and is used to drive the test piece (100) to reciprocate.

4. The wear test platform according to claim 3, characterized in that: The vertical plate (311) is provided with a plurality of first pin holes (3111) at intervals around the axis of the first pivot axis, and the base (322) is provided with a second pin hole (3221) along the second horizontal direction (Y), and the second pin hole (3221) is opposite to one of the plurality of first pin holes (3111), so that the test piece (100) is opposite to one of the plurality of test holes (212) along the reciprocating direction of the test piece (100); The driving assembly (32) further comprises a first pin shaft (328), wherein the first pin shaft (328) is inserted into one of the first pin holes (3111) and the second pin hole (3221) corresponding thereto.

5. The wear test platform according to claim 4, characterized in that: The first pin hole (3111) and the second pin hole (3221) are respectively located on one side of the first pivot axis, the vertical plate (311) is located on the other side of the first pivot axis and is provided with a plurality of third pin holes (3112) at intervals around the axis of the first pivot axis, the base (322) is provided with a fourth pin hole (3222) along the second horizontal direction (Y), the second pin hole (3221) is opposite to one of the plurality of first pin holes (3111), so that the fourth pin hole (3222) is opposite to one of the plurality of third pin holes (3112); The driving assembly (32) further comprises a second pin shaft (329), wherein the second pin shaft (329) is inserted into one of the third pin holes (3112) and the fourth pin hole (3222) corresponding thereto.

6. The wear test platform according to claim 3, characterized in that: The driving assembly (32) further comprises a pivot seat (323), and the pivot seat (323) is arranged at one end of the base (322) away from the sand box (2); The fixed portion of the driving member is pivotally connected to the pivot seat (323) via a second pivot shaft (324), and the axis of the second pivot shaft (324) is arranged along the second horizontal direction (Y). The telescopic portion of the driving member is used to drive the test piece (100) to reciprocate.

7. The wear test platform according to claim 6, characterized in that: The driving assembly (32) further comprises a slide rail (325) and a slider (326); the slide rail (325) is provided at one end of the base (322) close to the sand box (2); the extension direction of the slide rail (325) is perpendicular to the axis of the first pivot shaft; the slider (326) is slidably matched with the slide rail (325); the slider (326) is used to fix the test piece (100); and the telescopic portion is used to drive the slider (326) to slide on the slide rail (325).

8. The wear test platform according to claim 7, characterized in that: The telescopic portion is pivotally connected to the slider (326) via a third pivot axis (327), and the axis of the third pivot axis (327) is arranged along the second horizontal direction (Y).

9. Abrasive wear test method, characterized in that: The wear test platform according to any one of claims 1 to 8 is used to perform the test, and specifically comprises: S10: before testing, the test piece (100) is cleaned, three-dimensionally scanned and modeled, and weighed to obtain original pre-experimental data; S20: installing the test piece (100) on a wear test platform; S30: After the wear test platform is set up, testing is performed; S40: During the test, the wear condition of the test piece (100) is recorded once every preset time interval a; S50: After the test, the test piece (100) is cleaned again, three-dimensionally scanned and modeled, and weighed; S60: Analyze the data before, during and after the test.

10. The abrasive wear testing method according to claim 9, characterized in that: The driving assembly (32) is pivotally connected to the support seat (31) via a first pivot axis, and the axial direction of the first pivot axis is arranged along a second horizontal direction (Y), and the first horizontal direction (X) and the second horizontal direction (Y) are perpendicular; a plurality of the test holes (212) are arranged along the vertical direction (Z), and the driving assembly (32) swings relative to the support seat (31) so that the test piece (100) is opposite to one of the plurality of test holes (212) along the moving direction of the test piece (100); S30 specifically includes: S301: placing the standard sand pile in the sand box (2) so that the height of the standard sand pile exceeds the test hole (212); S302: adjusting the angle of the driving assembly (32) relative to the supporting seat (31) so that the angle at which the test piece (100) is inserted into the standard sand pile meets a preset requirement; S303: Adjust the frequency and duration of the reciprocating motion of the test piece (100) driven by the drive assembly (32).

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