CN111504828A - Friction wear testing machine with abrasive dust collecting device - Google Patents
Friction wear testing machine with abrasive dust collecting device Download PDFInfo
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- CN111504828A CN111504828A CN202010349659.3A CN202010349659A CN111504828A CN 111504828 A CN111504828 A CN 111504828A CN 202010349659 A CN202010349659 A CN 202010349659A CN 111504828 A CN111504828 A CN 111504828A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention relates to the field of wear experiments, in particular to a friction wear testing machine with a grinding dust collecting device. The abrasive dust collecting device comprises an abrasive dust collecting pipe, and the abrasive dust collecting pipe is connected with an abrasive dust collecting disc. The abrasive dust collecting disc is provided with a plurality of abrasive dust collecting bags, and the lower portion of the abrasive dust collecting disc is provided with an air pumping piece which is used for pumping air. When the abrasive dust is collected, the abrasive dust collecting pipe extends into the abrasive dust collecting bag, air is pumped from the lower end of the abrasive dust collecting bag through the air pumping piece, and the abrasive dust on the sample table is pumped into the abrasive dust collecting bag. Above-mentioned friction wear testing machine can be collected the abrasive dust of collecting in different periods and save to the abrasive dust of difference and collect the bag, and the staff can gather the abrasive dust in real time according to the research needs, and the collection mode does not produce the destruction to the abrasive dust, and does not produce the interference to the testing process, is favorable to studying the process and the mechanism of friction wear itself.
Description
Technical Field
The invention relates to the technical field of testing of abrasion research, in particular to a friction abrasion testing machine with an abrasion dust collecting device, which is used for collecting abrasion dust in a dry friction abrasion test and analyzing the abrasion performance of a material according to the quality and the shape of the abrasion dust.
Background
The frictional wear is a complex process, the frictional wear performance of the material is not the inherent characteristics of the material like the strength, hardness and the like of the material, but the comprehensive performance of the mechanical, physical and chemical characteristics of the material and a mating material under a certain use condition can be generally divided into abrasive wear, surface fatigue wear, adhesive wear, corrosive wear, thermal wear, fretting wear and other wear types.
The basic morphology of the abrasive dust can be roughly divided into long-strip abrasive grains, spherical abrasive grains, flaky abrasive grains, irregular abrasive grains and the like. Different wear types correspond to various abrasive dust shapes, the same wear type, different wear degrees and stages, and different sizes and shapes of the abrasive dust; meanwhile, the abrasive dust has the phenomena of material transfer and oxidation to different degrees. The slightly worn abrasive dust is fine and has the size of about 0.01-1 mu m; the seriously worn abrasive dust has a straight edge, the surface of the seriously worn abrasive dust has scratches, the edge and the scratches are more remarkable along with the aggravation of the abrasion, the size of the abrasive dust is larger along with the serious abrasion, and the size of the abrasive dust is about 20-200 mu m during the serious abrasion, which is caused by overhigh shearing stress generated by overlarge load and speed. The wear debris in the running-in period is mainly long abrasive grains, has an aspect ratio of 10 or more, takes a curved or curled shape, and is formed by penetrating sharp microprotrusions or cutting particles into mating surfaces, forming material accumulation in front of the microprotrusions or cutting particles, causing plastic deformation, and then falling off from a friction surface. During subsequent rubbing, some particles may form spherical abrasive particles through crushing. The aspect ratio of the flaky abrasive particles is 2-10, the surfaces are smooth and clean, the flaky abrasive particles usually appear on dry friction interfaces, fatigue cracks are generated on the surfaces of materials in friction and abrasion after being ploughed and repeatedly loaded and unloaded, and the fatigue cracks are expanded to generate plastic deformation of microprotrusions, so that the flaky abrasive particles are formed. In addition, most of the abrasive dusts have irregular shapes such as those generated by adhesive wear and falling off of the transferred chips of brittle material fracture.
The evaluation of the frictional wear performance of the material is mainly carried out through various frictional wear testing machines, the frictional wear testing machines can effectively control various factors influencing the frictional wear, the data obtained by the test have good repeatability and strong comparability, and the method is very suitable for researching the influence of various factors on the frictional wear one by one and is beneficial to researching the process and mechanism of the frictional wear. It is worth mentioning that, in actual conditions or in a friction wear tester under ideal test conditions, the friction wear process is not usually a single wear type, but rather, under the interweaving effect of various factors, one type of wear causes other types of wear after it occurs: for example, in a friction and wear test, adhesive wear may occur first, and the falling material particles may cause abrasive wear in the friction pair; if the abrasion material is subjected to alternating stress or impact action on a mating part, fatigue cracks may be generated on the abrasion material, along with the progress of a frictional wear test, the material at the surface layer cracks is peeled off, abrasive grains are embedded into a friction pair and abrasion of the abrasive grains is also initiated, and a new clean surface formed by abrasion of the abrasive grains is likely to cause corrosion or adhesive wear; fretting wear can occur in a variety of wear forms, such as adhesive wear, oxidative wear, abrasive wear, and fatigue wear. Different test conditions and different forms of wear have different primary and secondary wear, so that the analysis of the friction wear process and mechanism is extremely complicated, difficult and blind.
According to the summary and experience accumulation of the abrasive dust in the existing research work, the abrasion process and mechanism of the material can be analyzed in a reverse mode. If no external intervention exists, various abrasive dusts are not easy to fall off from an interface, because of the characteristic of high-speed motion of a friction wear testing machine, the collection of the abrasive dusts is unsafe when the friction wear testing machine is directly operated, at present, part of the abrasive dusts are generally collected by using conductive adhesive or other modes after the friction wear test is finished, and the abrasive dusts are put into an optical microscope, a scanning electron microscope, X-ray diffraction or X-ray photoelectron spectroscopy to carry out microscopic morphology observation and element analysis, so that the wear mechanism of the material is deduced.
However, the existing friction wear testing machine and abrasive dust analysis mechanism have the following problems: the grinding dust is collected after the friction and wear test is finished, the type and the change process of a wear mechanism in the whole wear process are presumed to be not accurate enough through observation and analysis of the grinding dust, and the grinding dust is collected through a pause wear test adopted in the current research work; or the experiment of different abrasion time under the same parameter is carried out on different positions of a certain material, although the same material is adopted, the problems of poor uniformity of the material, non-repeatability of the friction abrasion process and the like are considered, so that the result is not necessarily convincing.
Disclosure of Invention
The invention mainly aims to provide a friction wear testing machine with a grinding dust collecting device, and aims to solve the problems that: in the existing friction wear testing machine and the existing abrasive dust analysis mechanism, abrasive dust is collected after the friction wear test is finished, and the type and the change process of the wear mechanism of the whole wear process are presumed to be inaccurate by observing and analyzing the abrasive dust.
The invention provides a friction wear testing machine with an abrasive dust collecting device, which comprises a sample table and a pair of grinding ball fixing rods positioned at the upper part of the sample table, wherein the lower ends of the pair of grinding ball fixing rods are provided with a pair of grinding balls facing the sample table. The abrasive dust collecting device comprises an abrasive dust collecting pipe, the abrasive dust collecting pipe is connected with an abrasive dust collecting disc, and the abrasive dust collecting disc is connected with a driving piece for driving the abrasive dust collecting disc to rotate. The abrasive dust collecting disc is provided with a plurality of abrasive dust collecting bags, and the lower portion of the abrasive dust collecting disc is provided with an air pumping piece which is used for pumping air. When the abrasive dust is collected, the abrasive dust collecting pipe extends into the abrasive dust collecting bag, the lower end of the abrasive dust collecting bag is connected with an air pumping piece, the air pumping piece is used for pumping the abrasive dust on the sample table into the abrasive dust collecting pipe, and then pumping the air mixed with the abrasive dust in the abrasive dust collecting pipe into the abrasive dust collecting bag.
Preferably, the abrasive dust collecting pipe is fixed to the pair of grinding ball fixing rods, and a collecting end of the abrasive dust collecting pipe faces the sample on the sample table.
Preferably, the sample table is positioned in a test box, a bottom plate of the test box is funnel-shaped, and the abrasive dust collecting pipe is connected with an opening at the lowest position of the bottom plate of the test box.
Preferably, the grinding ball fixing rod is further connected with an air blowing pipe, and an air outlet of the air blowing pipe faces to the sample on the sample table.
Preferably, the chip removal end of abrasive dust collecting pipe is connected with the first elevating gear of its up-and-down motion of drive, a elevating gear drive the chip removal end reciprocates, so that the chip removal end stretches into the abrasive dust collecting bag or follows the abrasive dust collecting bag is taken out.
Preferably, the driving part is a servo motor, and the servo motor drives the abrasive dust collecting disc to rotate; the servo motor and the abrasive dust collecting disc are fixed on a second lifting device, and the second lifting device is a lifting table. The abrasive dust collecting disc is provided with a plurality of collecting bag mounting openings, and after the abrasive dust collecting bags are fixed to the collecting bag mounting openings, the abrasive dust collecting bags extend to the lower portion of the abrasive dust collecting disc. The air pumping piece is an air pumping box, an air pumping hole is formed in the air pumping box, and when the abrasive dust collecting disc moves downwards, the abrasive dust collecting bag extends into the air pumping hole.
Preferably, a fan is connected in the air extraction box, the fan is connected with an exhaust pipe, and the fan is used for pumping air in the air extraction box out of the air extraction box.
Preferably, the abrasive dust collecting bag is hermetically connected to the collecting bag mounting opening; and a sealing ring is arranged on the lower part of the abrasive dust collecting disc, and when the abrasive dust collecting disc moves downwards, the upper end surface of the pumping hole is abutted to the sealing ring.
Preferably, the grinding chip collecting box is further included, the grinding chip collecting disc and the driving piece are located in the grinding chip collecting box, a chip taking opening is formed in the side wall of the grinding chip collecting box, and a chip taking door is mounted on the chip taking opening.
Compared with the prior art, the friction wear testing machine with the abrasive dust collecting device provided by the invention has the following beneficial effects:
the utility model provides a friction wear testing machine with abrasive dust collection device, on the basis of current friction wear testing machine, abrasive dust collection device has been increased, through air exhauster and the abrasive dust collecting pipe extraction sample bench abrasive dust, place the abrasive dust through the abrasive dust catch tray and collect the bag, the abrasive dust catch tray rotates under the drive of driving piece for change abrasive dust collection bag, and then collect the abrasive dust in different periods, and with the abrasive dust storage that different periods were collected to the abrasive dust collection bag of difference.
The friction wear testing machine with the abrasive dust collecting device is reasonable in structure, simple in operation, long in service life, abrasive dust can be collected in real time according to research needs, the collection mode does not damage the abrasive dust, the minimum particle size of the captured abrasive dust can reach 0.1 mu m, the efficiency of collecting fine abrasive dust can reach more than 99%, the collection efficiency is high, the applicability is high, the friction wear testing machine can be matched with various friction wear testing machines in the prior art to perform dry friction wear tests, the abrasive dust collecting process does not interfere with the testing process, and the process and mechanism of friction wear are favorably researched.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
It is to be understood that the drawings in the following description are merely exemplary of the invention and that other drawings may be derived from the structure shown in the drawings by those skilled in the art without the exercise of inventive faculty.
Fig. 1 is a schematic perspective view of an abrasive dust collecting device in an embodiment, an embodiment 2, or an embodiment 3 of the present invention.
Fig. 2 is a partial perspective view of the friction wear testing machine with the abrasive dust collecting device in example 1 or example 2.
Fig. 3 is a sectional view of a pair of grinding balls, a pair of grinding ball holding bars and a swarf collecting pipe in example 2 of the present invention.
FIG. 4 is a perspective view of a experimental box and its internal devices in example 3 of the present invention, wherein the experimental box is a perspective view.
FIG. 5 is a sectional view of a pair of grinding balls, a pair of grinding ball fixing bars and an air blowing tube in example 3 of the present invention.
The reference numbers illustrate:
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
The present embodiment provides a friction wear testing machine with an abrasive dust collecting device, as shown in fig. 1 to 5, which includes a sample table 1 and a pair of grinding ball fixing rods 4 located at an upper portion of the sample table 1, and a pair of grinding balls 3 facing the sample table 1 is provided at a lower end of the pair of grinding ball fixing rods 4. The abrasive dust collecting device comprises an abrasive dust collecting pipe 5, the abrasive dust collecting pipe 5 is connected with an abrasive dust collecting disc 8, the abrasive dust collecting disc 8 is connected with a driving piece 10 for driving the abrasive dust collecting disc to rotate, and in the embodiment, the driving piece 10 is a servo motor to accurately control the rotation angle of the abrasive dust collecting disc 8. In the present embodiment, a plurality of abrasive dust collecting bags 9 are arranged on the abrasive dust collecting tray 8, and an air pumping member 12 is arranged at the lower part of the abrasive dust collecting tray 8, wherein the air pumping member 12 is used for pumping air. When the abrasive dust is collected, the abrasive dust collecting tube 5 extends into the abrasive dust collecting bag 9, the lower end of the abrasive dust collecting bag 9 draws air through the air pumping piece 12, and the abrasive dust on the sample table 1 is pumped into the abrasive dust collecting bag 9 through the abrasive dust collecting tube, it should be noted that the abrasive dust collecting bag 9 should be a filtering device, such as a filter bag or a filter barrel, to filter air, so that the abrasive dust is retained in the abrasive dust collecting bag 9.
Specifically, in this embodiment, in order to make the cooperation of abrasive dust collecting pipe 5 and different abrasive dust collecting bag 9, the chip removal end of abrasive dust collecting pipe 5 is connected with the first elevating gear of its up-and-down motion of drive, and this first elevating gear can be the drive the elevator motor of abrasive dust collecting pipe 5 up-and-down motion also can be other equipment among the prior art, for the convenience of reciprocating of the chip removal end of abrasive dust collecting pipe 5 lower extreme, above-mentioned abrasive dust collecting pipe 5 should be flexible pipe or have the part to be the hose to the chip removal end up-and-down motion of abrasive dust collecting pipe 5. First elevating gear drive when the chip removal end reciprocates, can make the chip removal end stretches into abrasive dust collecting bag 9 or follows abrasive dust collecting bag 9 takes out the chip removal end is taken out from abrasive dust collecting bag 9, can rotate abrasive dust catch tray 8, and then changes abrasive dust collecting bag 9.
It should be noted that, in order to prevent the abrasive dust loss, also in order to make full use of the negative pressure that takes out air production of piece 12, when above-mentioned chip removal end stretched into abrasive dust collection bag 9, the chip removal end should be collected bag 9 sealing connection with the abrasive dust, if the chip removal end above-mentioned be provided with cyclic annular seal dish, be fixed with annular seal circle on the cyclic annular seal dish, when the chip removal end moved down, the annular seal circle was sealed to be fixed the collection bag installing port periphery at abrasive dust collection bag 9 place.
Specifically, in order to facilitate the matching connection between the abrasive dust collecting tray 8 and the air exhaust member 12, in this embodiment, the servo motor and the abrasive dust collecting tray 8 are fixed on a second lifting device, and the second lifting device is a lifting table 11. The abrasive dust collecting disc 8 is provided with a plurality of collecting bag mounting openings, and after the abrasive dust collecting bags 9 are fixed to the collecting bag mounting openings, the abrasive dust collecting bags 9 extend to the lower portion of the abrasive dust collecting disc 8. The air exhaust part 12 is an air exhaust box, an air exhaust opening is formed in the air exhaust box, and when the abrasive dust collecting disc 8 moves downwards, the abrasive dust collecting bag 9 extends into the air exhaust opening.
It should be noted that, in order to prevent the wear debris loss and make full use of the negative pressure generated by the air exhaust of the air exhaust member 12, after the second lifting device drives the wear debris collecting tray 8 to move down, the air exhaust port and the wear debris collecting tray 8 should be connected in a sealing manner, and the specific sealing manner is as follows: and a sealing ring is arranged on the lower part of the abrasive dust collecting disc 8, and when the abrasive dust collecting disc 8 moves downwards, the upper end surface of the pumping hole is abutted to the sealing ring. Of course, in order to reduce the wear of the abrasive dust and prevent the abrasive dust from overflowing into the air, the abrasive dust collecting bag 9 should be hermetically connected to the mounting opening of the collecting bag.
Specifically, in this embodiment, a fan is connected to the air extraction box, the fan is connected to an exhaust pipe, and the fan is configured to pump air in the air extraction box out of the air extraction box, so that a negative pressure is generated in the air extraction box, and then the abrasive dust is extracted from the sample table through the abrasive dust collection pipe 5.
Specifically, in this embodiment, the above-mentioned abrasive dust collecting device further includes an abrasive dust collecting box, the abrasive dust collecting disc and the driving piece are located in the abrasive dust collecting box, a chip taking opening is provided on the side wall of the abrasive dust collecting box, and a chip taking door is installed on the chip taking opening.
Example 2
In addition to the embodiment 1, as shown in fig. 2 and 3, the above-mentioned wear dust collecting pipe 5 may be installed as described in the embodiment 2, the wear dust collecting pipe 5 is fixed to the pair of grinding ball fixing rods 4, and the collecting end of the wear dust collecting pipe 5 faces the sample on the sample table 1. The grinding dust collecting pipe 5 can be sleeved on the grinding ball fixing rod 4 and can also be fixed on the side wall of the grinding ball fixing rod 4, and it needs to be explained that the lower end of the grinding dust collecting pipe 5 is higher than the grinding balls 3 so as to ensure that the grinding dust collecting pipe 5 cannot touch a grinding sample in the experimental process and can collect grinding dust from the grinding part in time.
Example 3
In addition to embodiment 1, as shown in fig. 4 and 5, the above-mentioned wear debris collecting tube 5 may be installed as described in embodiment 3, in this embodiment, an air blowing tube 6 is further connected to the pair of grinding ball fixing rods 4, an air outlet of the air blowing tube 6 faces the sample on the sample table 1, and the air blowing tube 6 should be connected to a blower. The sample table 1 is positioned in the experiment box 7, the bottom plate of the experiment box 7 is funnel-shaped, and the abrasive dust collecting pipe 5 is connected with the opening at the lowest position of the bottom plate 71 of the experiment box.
In this embodiment, the blowing tube 6 blows air to the sample platform 1 to blow away the abrasive dust from the sample platform 1, and the abrasive dust falls to the bottom plate 71 of the experiment box, enters the lowest opening position of the bottom plate 71 of the experiment box under the action of gravity, and is finally collected by the abrasive dust collecting tube 5, and during the process of collecting the abrasive dust by the abrasive dust collecting tube 5 dropping due to the gravity of the abrasive dust, the air exhaust of the air exhaust part 12 generates a certain air flow for extracting the abrasive dust.
Example 4
On the basis of any one of the sets of the friction wear testing machines with the abrasive dust collecting device in embodiments 1 to 3, the present embodiment provides an abrasive dust collecting method:
in the present embodiment, the abrasive dust collecting device instantly collects a small amount of abrasive dust at the collection point, i.e., the sample stage 1: when the friction coefficient changes, the grinding contact surface is changed definitely, so that aiming at the conditions that multiple wear types exist or the friction coefficient is sensitive to change, an electric signal can be sent out when the friction coefficient exceeds a fluctuation threshold value in the test, the electric signal is used as a grinding dust collection time point to carry out instantaneous sampling on the grinding dust, and the grinding dust collection device is controlled to be started through the electric signal so as to collect the grinding dust. It should be noted that, in order to implement the above control of the abrasive dust collecting device, in any one of the friction wear testing machines with the abrasive dust collecting device in embodiments 1 to 3, each electrical part should be connected with a controller, each electrical part is controlled by the controller, and the controller sends a control instruction to each electrical part according to an electrical signal, wherein each electrical part should at least include a driving part and an air extracting part, and when the controller cannot complete specific control, the control of each electrical part can be implemented in a manner of being assisted by a worker.
Through the mode, in the collection process, the abrasive dusts collected at different periods are sequentially stored in different sampling bags, namely, in the abrasive dust collecting bag 9, the abrasive dusts in different abrasive dust collecting bags 9 are subjected to subsequent morphology analysis and element analysis, so that the abrasion mechanism and the change time in the friction abrasion test process are determined.
Aiming at the condition that the wear type is single or the friction coefficient is not changed much though a plurality of wear types exist, the method can set fixed interval time to carry out instantaneous sampling on the abrasive dust, sequentially store the abrasive dust, and research the change process of the friction wear system in different time periods by analyzing the abrasive dust.
Example 5
On the basis of any one of the sets of the friction wear testing machines with the abrasive dust collecting device in embodiments 1 to 3, the present embodiment provides an abrasive dust collecting method:
in the present embodiment, the abrasive dust collecting device collects the freshly peeled abrasive dust at the collection point, i.e., the sample table 1:
the grinding dust is generally taken as a third body to be worn to accelerate the wear of the material, if the peeled grinding dust is collected in real time in the friction and wear test process, the influence of the grinding dust as abrasive particles on the friction performance of the material can be ignored, the grinding dust which is not rolled for countless times can be obtained, the appearance and the components of the part of the grinding dust are relatively complete, and the wear mechanism of the initial stage at the grinding surface can be favorably revealed. The friction coefficient exceeds a fluctuation threshold value or a fixed time interval is set to be used as the switching time of the abrasive dust collecting bag 9, the abrasive dust is stored in different abrasive dust collecting bags 9, the relative proportion occupied in each collecting interval is evaluated by weighing the abrasive dust after the test is finished, the intensity of abrasion can be judged according to the relative abrasion rate, the appearance and the components of the abrasive dust which is directly peeled off are compared with the relative abrasion rate in the subsequent analysis process, and the research on the abrasion mechanism of each time process of the friction abrasion test is more scientific, accurate and visual.
The utility model provides a above-mentioned friction wear testing machine with abrasive dust collection device and abrasive dust collection method, on the basis of current friction wear testing machine, abrasive dust collection device has been increased, extract the abrasive dust on sample platform 1 through air exhauster and abrasive dust collecting pipe 5, place abrasive dust collection bag 9 through abrasive dust catch tray 8, abrasive dust collection tray 8 rotates under driving piece 10's drive, be used for changing abrasive dust collection bag 9, and then collect the abrasive dust in different periods, and with the abrasive dust of collecting in different periods save to different abrasive dust collection bags 9.
The friction wear testing machine with the abrasive dust collecting device is reasonable in structure, simple to operate, and long in service life, abrasive dust can be collected in real time according to research needs, the collection mode does not damage the abrasive dust, the minimum particle size of the captured abrasive dust can reach 0.1 mu m, the efficiency of capturing fine abrasive dust can reach more than 99%, the friction wear testing machine has high collection efficiency and strong applicability, can be matched with various friction wear testing machines in the prior art to perform dry friction wear tests, the abrasive dust collecting process does not interfere with the testing process, and the process and mechanism of friction wear per se can be researched.
It is to be understood that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. A friction wear testing machine with a grinding dust collecting device,
including the sample platform with be located sample platform upper portion to the grinding ball dead lever, the lower extreme to the grinding ball dead lever is provided with towards the sample platform to the grinding ball, its characterized in that:
the abrasive dust collecting device comprises an abrasive dust collecting pipe, the abrasive dust collecting pipe is connected with an abrasive dust collecting disc, and the abrasive dust collecting disc is connected with a driving piece for driving the abrasive dust collecting disc to rotate;
the abrasive dust collecting disc is provided with a plurality of abrasive dust collecting bags, and the lower part of the abrasive dust collecting disc is provided with an air pumping piece which is used for pumping air;
when the abrasive dust is collected, the abrasive dust collecting pipe extends into the abrasive dust collecting bag, and the lower end of the abrasive dust collecting bag is connected with an air exhaust piece; the air pumping piece is used for pumping the abrasive dust on the sample table into the abrasive dust collecting pipe and pumping the air mixed with the abrasive dust in the abrasive dust collecting pipe into the abrasive dust collecting bag.
2. A frictional wear tester with an abrasive dust collecting device according to claim 1, characterized in that:
the abrasive dust collecting pipe is fixed on the pair of grinding ball fixing rods, and the collecting end of the abrasive dust collecting pipe faces to the sample on the sample table.
3. A frictional wear tester with an abrasive dust collecting device according to claim 1,
the test sample table is positioned in the experiment box, the bottom plate of the experiment box is funnel-shaped, and the abrasive dust collecting pipe is connected with the opening at the lowest position of the bottom plate of the experiment box.
4. A frictional wear tester with an abrasive dust collecting device according to claim 3,
and the grinding ball fixing rod is also connected with an air blowing pipe, and an air outlet of the air blowing pipe faces to the sample on the sample table.
5. A frictional wear tester with an abrasive dust collecting device according to claim 1,
the chip removal end of abrasive dust collecting pipe is connected with the first elevating gear of its up-and-down motion of drive, a elevating gear drive the chip removal end reciprocates, so that the chip removal end stretches into the abrasive dust collection bag or follows the abrasive dust collection bag is taken out.
6. A frictional wear tester with an abrasive dust collecting device according to claim 1,
the driving piece is a servo motor, and the servo motor drives the abrasive dust collecting disc to rotate; the servo motor and the abrasive dust collecting disc are fixed on a second lifting device, and the second lifting device is a lifting table;
the abrasive dust collecting disc is provided with a plurality of collecting bag mounting openings, and after the abrasive dust collecting bags are fixed on the collecting bag mounting openings, the abrasive dust collecting bags extend to the lower part of the abrasive dust collecting disc;
the air pumping piece is an air pumping box, an air pumping hole is formed in the air pumping box, and when the abrasive dust collecting disc moves downwards, the abrasive dust collecting bag extends into the air pumping hole.
7. A frictional wear tester with an abrasive dust collecting device in accordance with claim 6,
the air extraction box is characterized in that a fan is connected in the air extraction box, the fan is connected with an exhaust pipe, and the fan is used for extracting air in the air extraction box out of the air extraction box.
8. A frictional wear tester with an abrasive dust collecting device in accordance with claim 6,
the abrasive dust collecting bag is hermetically connected to the collecting bag mounting opening; and a sealing ring is arranged on the lower part of the abrasive dust collecting disc, and when the abrasive dust collecting disc moves downwards, the upper end surface of the pumping hole is abutted to the sealing ring.
9. A frictional wear tester with an abrasive dust collecting device according to claim 1,
still include the abrasive dust collecting box, the abrasive dust catch tray with the driving piece is located in the abrasive dust collecting box, seted up on the lateral wall of abrasive dust collecting box and got the bits mouth, it gets the bits door to install on the bits mouth to get.
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| CN202010349659.3A CN111504828B (en) | 2020-04-28 | 2020-04-28 | Friction wear testing machine with abrasive dust collecting device |
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| CN202010349659.3A CN111504828B (en) | 2020-04-28 | 2020-04-28 | Friction wear testing machine with abrasive dust collecting device |
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| CN111504828B CN111504828B (en) | 2022-11-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929187A (en) * | 2020-08-17 | 2020-11-13 | 北京矿冶科技集团有限公司 | Abradable test machine |
| CN112525746A (en) * | 2020-11-14 | 2021-03-19 | 郭可伍 | Building interior decoration is panel surface wearability testing arrangement for fitment |
| CN113281207A (en) * | 2021-05-12 | 2021-08-20 | 温州大学 | Test device capable of realizing friction and wear behavior research under multiple working conditions |
| PL442857A1 (en) * | 2022-11-17 | 2024-05-20 | Politechnika Gdańska | Chamber for testing wear particles emitted from the friction pair |
| PL442856A1 (en) * | 2022-11-17 | 2024-05-20 | Politechnika Gdańska | Chamber for testing wear particles emitted from the friction pair |
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| JPH07290360A (en) * | 1994-04-25 | 1995-11-07 | Nkk Corp | Recovering device for grinder ground chip |
| CN103033468A (en) * | 2012-12-15 | 2013-04-10 | 山东大东联石油设备有限公司 | Simulation testing machine for abrasion of rod pipe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929187A (en) * | 2020-08-17 | 2020-11-13 | 北京矿冶科技集团有限公司 | Abradable test machine |
| CN111929187B (en) * | 2020-08-17 | 2023-06-27 | 北京矿冶科技集团有限公司 | Abradable testing machine |
| CN112525746A (en) * | 2020-11-14 | 2021-03-19 | 郭可伍 | Building interior decoration is panel surface wearability testing arrangement for fitment |
| CN113281207A (en) * | 2021-05-12 | 2021-08-20 | 温州大学 | Test device capable of realizing friction and wear behavior research under multiple working conditions |
| CN113281207B (en) * | 2021-05-12 | 2022-12-13 | 温州大学 | Test device capable of realizing friction and wear behavior research under multiple working conditions |
| PL442857A1 (en) * | 2022-11-17 | 2024-05-20 | Politechnika Gdańska | Chamber for testing wear particles emitted from the friction pair |
| PL442856A1 (en) * | 2022-11-17 | 2024-05-20 | Politechnika Gdańska | Chamber for testing wear particles emitted from the friction pair |
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|---|---|
| CN111504828B (en) | 2022-11-04 |
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