CN109297848B - Wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine - Google Patents
Wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine Download PDFInfo
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- CN109297848B CN109297848B CN201811346385.1A CN201811346385A CN109297848B CN 109297848 B CN109297848 B CN 109297848B CN 201811346385 A CN201811346385 A CN 201811346385A CN 109297848 B CN109297848 B CN 109297848B
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- liquid nitrogen
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- wear testing
- cantilever
- testing machine
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- 238000012360 testing method Methods 0.000 title claims abstract description 86
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 146
- 239000007788 liquid Substances 0.000 claims abstract description 82
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 230000000149 penetrating effect Effects 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000008054 signal transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- G—PHYSICS
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
Abstract
The invention discloses a wide-temperature-range self-adaptive adjustment multifunctional friction and wear testing machine, relates to the technical field of friction and wear testing machines, and meets the requirements of the friction and wear testing machine on samples in low-temperature, normal-temperature and high-temperature wide-temperature-range environments. The utility model provides a multi-functional frictional wear testing machine of wide temperature range self-adaptation regulation, includes test cavity, be equipped with rotating disk and the liquid nitrogen cavity of relative setting in the test cavity, the liquid nitrogen cavity just is equipped with the heating frock on the face of rotating disk, the heating frock outer wall is equipped with heating coil around, the heating frock just can dismantle on the face of rotating disk and connect test fixture.
Description
Technical Field
The invention relates to the technical field of friction and wear testing machines, in particular to a wide-temperature-range self-adaptive adjustment multifunctional friction and wear testing machine.
Background
At present, friction and wear testing machines are of various types, and particularly with the continuous maturity of micro-nano technology, the micro-nano friction and wear testing machine is also layered endlessly. Most friction and abrasion workpieces are not low in ambient temperature, friction generates heat, and the temperature of friction pairs is generally higher than normal temperature. However, under some special working conditions, such as outer space, low-temperature wind tunnel and the like, the working environment temperature of the friction pair is very low, the relative sliding speed of the friction pair is not high, and the generated friction heat is limited. The temperature of the friction pair in the whole working period is lower than normal temperature.
Aiming at the problems that the friction and wear testing machines at the prior art are more and the low-temperature testing machines are very few, the invention designs the multifunctional friction and wear testing machine capable of realizing the self-adaptive adjustment of the wide temperature range in the low-temperature, normal-temperature and high-temperature environments.
Disclosure of Invention
The invention aims to provide a wide-temperature-range self-adaptive adjustment multifunctional friction and wear testing machine which meets the requirements of the friction and wear testing machine on a sample in a wide-temperature-range environment with low temperature, normal temperature and high temperature.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a multi-functional friction and wear testing machine of wide temperature range self-adaptation regulation, includes the test cavity, be equipped with rotating disk and the liquid nitrogen cavity of relative setting in the test cavity, the liquid nitrogen cavity just is equipped with the heating frock on the face of rotating disk, the heating frock outer wall is equipped with heating coil around, the heating frock just can dismantle on the face of rotating disk and connect test fixture.
Through adopting above-mentioned technical scheme, test fixture compresses tightly the sample on heating frock, when needs cool off the sample, pour liquid nitrogen into in the liquid nitrogen cavity, because heating frock is connected with the liquid nitrogen cavity to the heat of messenger's sample is conducted for the liquid nitrogen through heating frock and liquid nitrogen cavity, realizes the cooling of sample. When the sample needs to be heated, the heating tool is heated through the heating coil, so that the sample is heated.
Further, the test fixture is annular, an annular groove for abutting the sample is formed in one side, facing the heating tool, of the test fixture, mounting holes penetrating through the upper surface and the lower surface of the test fixture are circumferentially formed in the test fixture, and mounting threads aligned with the mounting holes are formed in the heating tool.
By adopting the technical scheme, the sample fixing mode is as follows: the test sample is abutted in the annular groove, one surface of the test sample is tightly attached to the bottom surface of the annular groove, and the other surface of the test sample is tightly attached to the heating tool, and then the test sample and the heating tool are tightly pressed by passing through the mounting hole and the mounting thread through the bolt.
Further, the upper end opening of the test cavity is provided with a matched upper end cover, the liquid nitrogen cavity is arranged on the upper end cover, the upper end opening of the liquid nitrogen cavity is provided with a liquid nitrogen cavity end cover matched with the liquid nitrogen cavity end cover, and the liquid nitrogen cavity end cover is provided with a liquid nitrogen liquid level monitor, a liquid nitrogen injection pipe and a liquid nitrogen overflow pipe which extend into the liquid nitrogen cavity in a penetrating manner.
Through adopting above-mentioned technical scheme, pour into liquid nitrogen into the liquid nitrogen cavity through the liquid nitrogen injection tube, monitor the liquid level through liquid nitrogen liquid level monitor simultaneously, after the liquid nitrogen liquid level reaches certain limit value, stop the injection of liquid nitrogen. When the liquid nitrogen liquid level monitor fails, redundant liquid nitrogen can flow out through the liquid nitrogen overflow pipe, and then the liquid nitrogen flushing is stopped.
Further, the top of the upper end cover is provided with an acoustic emission sensor.
Through adopting above-mentioned technical scheme, acoustic emission sensor's setting, the frictional wear condition of accessible sound wave detection sample.
Further, the rotating disc comprises a disc body and a cantilever, the edge of the disc body is provided with a connecting seat, the cantilever is suspended above the rotating disc in the diameter direction of the disc body and one end of the cantilever is connected with the connecting seat, the cantilever is deviated from a plurality of pin seats are formed in the surface of the disc body, which is away from the connecting seat by taking the center of the disc body as a boundary, along the length direction of the cantilever, a pin shaft is inserted in the pin seats, pressure adjusting threads are formed in the cantilever in a penetrating mode in the axial direction of the disc body, pressure adjusting bolts are connected to the pressure adjusting threads in a threaded mode, and the bottoms of the pressure adjusting bolts are in interference with the disc body.
By adopting the technical scheme, the pin shaft is inserted on the pin seat, the upper end of the pin shaft is abutted against the sample before the friction and wear test, and the pressure of the pin shaft on the sample needs to be regulated. By rotating the pressure adjusting bolt, acting force between the pressure adjusting bolt and the disc body is adjusted, and according to the lever principle, one end of the cantilever far away from the connecting seat is enabled to be micro-moved upwards or downwards, so that the pressure of the pin shaft on the sample is finely adjusted. Because the pin seats are arranged in a plurality along the length direction of the cantilever, the moments of the pin seats from the axis of the disc body are different, and the closer the pin shaft is inserted on the pin seat to the axis under the same pressure, the smaller the pressure of the pin shaft on the sample is, and the lower the relative speed of the pin shaft on the sample is.
Further, the cantilever is provided with first through-hole in penetrating the keyway bottom, wear to be equipped with first pressure sensor on the first through-hole, the inner wall both sides of keyway are provided with two second through-holes that run through the cantilever along keyway axial direction symmetry respectively, wear to be equipped with second pressure sensor on the second through-hole, be equipped with on the disk body with first pressure signal transmission terminal that first pressure sensor wire is connected to and with second pressure signal transmission terminal that second pressure sensor wire is connected.
By adopting the technical scheme, the first pressure sensor can detect the vertical pressure of the pin shaft on the pin shaft, then the pressure of the pin shaft on the sample is obtained by subtracting the gravity of the pin shaft from the vertical pressure, when the pin shaft rotates circumferentially, the two second pressure sensors at opposite angles in the pin seat are respectively subjected to horizontal pressures with different directions, and the friction force between the pin shaft and the sample can be obtained by calculating the absolute value of the difference value of the two horizontal pressures.
Further, an infrared detector is arranged on one side of the connecting seat, which faces the test fixture.
By adopting the technical scheme, the infrared detector sets the temperature of the detectable sample towards the sample.
Further, the bottom of the test cavity is connected with a motor mounting bracket, a motor is arranged at the bottom of the motor mounting bracket, a motor shaft of the motor penetrates through the motor mounting bracket, a rotating shaft is axially arranged at the bottom of the disc body, and the motor shaft is connected with the rotating shaft.
By adopting the technical scheme, the motor shaft of the motor connects the rotating shaft of the disc body so as to drive the disc body to rotate.
Further, the axial threaded connection above the motor mounting bracket is provided with a bearing seat, a thrust bearing is connected in the bearing seat, a rotating shaft penetrates through and is fixed on the thrust bearing, a step groove is formed in the opening of the bearing seat, and a convex ring matched with the step groove is radially protruded on the outer wall of the thrust bearing.
Through adopting above-mentioned technical scheme, rotate the bearing frame of threaded connection on the motor support, make the bearing frame reciprocate in axial direction, and then make thrust bearing in the bearing frame reciprocate, drive the disk body on the rotation axis and reciprocate to adjust the pressure of round pin axle on the disk body to the sample, the adjustment of rotation bearing frame is for the coarse adjustment to the pressure of round pin axle effect sample.
Furthermore, two vacuumizing flanges are symmetrically arranged on the outer wall of the test cavity in the radial direction.
Through adopting above-mentioned technical scheme, both sides evacuation ring flange evacuation simultaneously makes test cavity evacuation more thoroughly, and the test cavity internal vacuum can prevent air convection, realizes low temperature environment.
In summary, the invention has the following beneficial effects:
1. providing a low-temperature source for the test through the liquid nitrogen cavity;
2. providing a high temperature source for the test by heating the tool;
3. convection is prevented by vacuumizing, so that a low-temperature environment is realized;
4. monitoring and analyzing the friction and wear process of the friction pair by utilizing an acoustic emission monitoring technology;
5. monitoring heat generated in the friction process through a thermocouple and an infrared imaging technology;
6. the applied pressure is finely adjusted through screw coarse adjustment and lever principle.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a hidden test cavity according to an embodiment of the present invention;
FIG. 3 is an exploded view of the structures of the liquid nitrogen cavity, the heating tool, the test fixture and the like according to the embodiment of the invention;
FIG. 4 is a partial cross-sectional view and exploded view of a disk or like structure in accordance with an embodiment of the present invention;
fig. 5 is an enlarged view of a portion a in fig. 4;
FIG. 6 is a schematic diagram of calculating the pressure and friction force experienced by a sample;
FIG. 7 is a bottom schematic view of the tray;
FIG. 8 is an exploded view of a motor mounting bracket or the like;
fig. 9 is an enlarged view of the portion B in fig. 8.
Reference numerals: 1. a test cavity; 2. a rotating disc; 3. a liquid nitrogen cavity; 31. a liquid nitrogen cavity end cover; 32. a liquid nitrogen liquid level monitor; 33. a liquid nitrogen injection tube; 34. a liquid nitrogen overflow pipe; 201. a tray body; 202. a cantilever; 203. a connecting seat; 204. a pin base; 205. a pin shaft; 206. pressure adjusting threads; 207. a pressure adjusting bolt; 208. a first through hole; 209. a second through hole; 210. a rotation shaft; 211. a slot; 212. a key slot; 4. heating the tool; 41. a heating coil; 5. a test fixture; 51. an annular groove; 52. a mounting hole; 6. an upper end cap; 7. an acoustic emission sensor; 8. a first pressure sensor; 81. a first pressure signal transmission terminal; 9. a second pressure sensor; 91. a second pressure signal transmission terminal; 10. an infrared detector; 11. a motor mounting bracket; 12. a motor; 121. a motor shaft; 122. a key block; 13. a bearing seat; 131. a step groove; 14. a thrust bearing; 141. a convex ring; 15. vacuumizing the flange plate; 16. a power supply connector; 17. pressing and buckling; 18. a gasket; 19. an operation port.
Detailed Description
The technical scheme of the embodiment of the invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the motor mounting bracket 11 is connected to the lower side of the test cavity 1, the upper end opening of the test cavity 1 is provided with an upper end cover 6 in a matched manner, and the upper end cover 6 is buckled with the upper end of the test cavity 1 through a pressing buckle 17. Two sides of the test cavity 1 are symmetrically provided with an operation port 19 respectively, and two sides of the operation port 19 on the test cavity 1 are symmetrically provided with a vacuumizing flange 15 communicated with the test cavity 1 respectively. The side wall of the test chamber 1 is also provided with a power connector 16. The top of upper end cover 6 is equipped with acoustic emission sensor 7, and acoustic emission sensor 7's setting, the frictional wear condition of accessible sound wave detection sample.
As shown in fig. 2, the liquid nitrogen chamber 3 and the rotating disk 2 are disposed opposite to each other.
As shown in fig. 3, the liquid nitrogen cavity 3 is concavely arranged on the end cover 6, the upper end opening of the liquid nitrogen cavity 3 is matched with a liquid nitrogen cavity end cover 31, and the liquid nitrogen cavity end cover 31 is in threaded connection with the liquid nitrogen cavity 3. The liquid nitrogen cavity end cover 31 is provided with a liquid nitrogen liquid level monitor 32, a liquid nitrogen injection pipe 33 and a liquid nitrogen overflow pipe 34 which extend into the nitrogen cavity. The liquid nitrogen liquid level monitor 32 is connected with a computer, the liquid nitrogen injection pipe 33 is connected with equipment for injecting liquid nitrogen, and when the liquid nitrogen liquid level monitor 32 detects that the liquid level reaches the limit value in the liquid nitrogen injection process of the liquid nitrogen cavity 3, the computer controls the equipment for inputting liquid nitrogen to stop. The liquid nitrogen overflow tube 34 can drain excess liquid nitrogen when the liquid nitrogen injection is overfilled. In an embodiment of the present invention, the liquid nitrogen level monitor 32 is a metal float level gauge.
As shown in fig. 3, a heating tool 4 is connected to the bottom of the liquid nitrogen chamber 3, the heating tool 4 is disc-shaped, and a heating coil 41 is wound around the peripheral wall of the heating tool 4. The bottom surface of the heating tool 4, namely the surface deviating from the connection surface of the heating tool 4 and the liquid nitrogen cavity 3, is detachably connected with a test fixture 5. The test fixture 5 is annular, and the side of test fixture 5 towards heating frock 4 is equipped with the ring channel 51 that is used for the butt sample, is provided with a plurality of mounting holes 52 that run through its upper and lower surface in ring channel 51 periphery on the test fixture 5, and a plurality of mounting screw holes that align with mounting hole 52 have been seted up along its edge circumference to the bottom surface of liquid nitrogen cavity 3. The sample was fixed as follows: the sample is abutted in the annular groove 51, one surface of the sample is tightly attached to the bottom surface of the annular groove 51, the other surface of the sample is tightly attached to the heating tool 4, and then the sample is tightly pressed with the heating tool 4 by screwing the sample through the mounting hole 52 and the mounting thread by the bolt. After the sample is fixed on the test fixture 5, the sample is not rotated by friction force in the friction and wear test process.
As shown in fig. 4, below the test jig 5 is a rotary disk 2, and the rotary disk 2 includes a disk body 201, a cantilever 202, and a rotary shaft 210, and the rotary shaft 210 is provided on one side of the disk body 201 in the axial direction of the disk body 201. The edge of the disc 201 is provided with a connecting seat 203, the cantilever 202 is suspended above the rotating disc 2 along the diameter direction of the disc 201, one end of the cantilever 202 is connected with the connecting seat 203, one side, away from the connecting seat 203, of the cantilever 202, deviating from the surface of the disc 201 by taking the center of the disc 201 as a boundary is provided with a plurality of pin seats 204 along the length direction of the cantilever 202, pin shafts 205 are inserted on the pin seats 204, the pin shafts 205 can be inserted in any pin seat 204 as required, pressure adjusting threads 206 are penetrated and arranged on the cantilever 202 along the axial direction of the disc 201, pressure adjusting bolts 207 are connected with the pressure adjusting threads 206 in a threaded manner, and the bottoms of the pressure adjusting bolts 207 are in contact with the disc 201. The pin 205 is inserted into the pin seat 204, the upper end of the pin 205 collides with the test specimen before the frictional wear test, and the pressure of the pin 205 on the test specimen needs to be adjusted. By rotating the pressure adjusting bolt 207, the acting force between the pressure adjusting bolt 207 and the disc 201 is adjusted, and according to the lever principle, one end of the cantilever 202, which is far away from the connecting seat 203, is jogged upwards or downwards, so that the pressure of the pin 205 on the sample is finely adjusted. Because the pin bosses 204 are provided with a plurality of pin bosses 204 along the length direction of the cantilever 202, the moment of the pin bosses 204 away from the axis of the disc body 201 is different, and the closer the pin shaft 205 is inserted on the pin bosses 204 to the axis under the same pressure, the smaller the pressure of the pin shaft 205 on the sample is, and the lower the relative speed of the pin shaft 205 on the sample is. The infrared detector 10 is also installed on the side of the connecting seat 203 facing the test fixture 5, and an infrared thermal image of the friction surface of the sample is obtained through the infrared detector 10 so as to obtain the temperature of the friction surface.
As shown in fig. 5, a first through hole 208 is formed in the bottom of the pin holder 204 and penetrates through the cantilever 202, a first pressure sensor 8 is arranged on the first through hole 208 in a penetrating manner, two second through holes 209 penetrating through the cantilever 202 are symmetrically formed in two sides of the inner wall of the pin holder 204 along the axial direction of the pin holder 204, and a second pressure sensor 9 is arranged on the second through holes 209 in a penetrating manner. The first pressure sensor 8 can detect the vertical pressure of the pin 205 on the pin, then the pressure of the pin 205 on the sample is obtained by subtracting the gravity of the pin 205 from the vertical pressure, when the pin 205 rotates circumferentially, the two second pressure sensors 9 at opposite angles in the pin seat 204 are respectively subjected to horizontal pressures with different directions, and the friction force between the pin 205 and the sample can be obtained by calculating the absolute value of the difference between the two horizontal pressures. As shown in fig. 6, fn=f1-G, friction force F, horizontal pressures F2 and F3, f= |f1-f2|. The coefficient of friction u, u=f/Fn is obtained by the ratio of the friction force f to the pressure Fn to which the sample is subjected. Since the disk 201 is rotated and data cannot be transmitted by wire, it is necessary to transmit the data wirelessly, and the disk 201 is provided with a first pressure signal transmission terminal 81 connected to the first pressure sensor 8 by wire and a second pressure signal transmission terminal 91 connected to the second pressure sensor 9 by wire.
As shown in fig. 8, a motor 12 is provided at the bottom of the motor mounting bracket 11, and a motor 12 shaft of the motor 12 passes through the motor mounting bracket 11, and the motor 12 shaft is connected with the rotation shaft 210 and inserted into the rotation shaft 210. As shown in fig. 7, a jack is axially formed on the rotary shaft 210, a key slot 212 is formed on the jack, and a key block 122 matched with the key slot 212 is integrally formed on the shaft of the motor 12 correspondingly. The upper end face of the motor mounting bracket 11 is axially and threadedly connected with a bearing seat 13 around the shaft of the motor 12, a thrust bearing 14 is arranged in the bearing, and a rotating shaft 210 penetrates through and is fixed on the thrust bearing 14 and then is in shaft connection with the motor 12. As shown in fig. 9, a stepped groove 131 is formed at the opening of the bearing seat 13, and a convex ring 141 matched with the stepped groove 131 is radially protruded on the outer wall of the bearing seat 13. The bearing seat 13 which is in threaded connection with the motor 12 bracket is rotated, so that the bearing seat 13 moves up and down in the axial direction, and then the thrust bearing 14 in the bearing seat 13 moves up and down, and the disc 201 on the rotating shaft 210 is driven to move up and down, so that the pressure of the pin 205 on the disc 201 on the sample is adjusted, and the adjustment of the bearing seat 13 is rough adjustment of the pressure of the pin 205 on the sample.
As shown in fig. 8, a gasket 18 is provided between the connection surface of the motor mounting bracket 11 and the test chamber 1 to improve the sealing property of the test machine.
The operation process comprises the following steps: the upper end cover 6 and the test cavity 1 are fastened by the press buckle 17, the operation port 19 is opened, and the test sample is arranged on the heating tool 4 through the test fixture 5. According to the pressure and the rotating speed of the sample, the pin shaft 205 is inserted into a proper pin seat 204, the pressure is observed by a computer, the bearing seat 13 at the bottom is rotated for rough adjustment, and then the adjusting bolt is rotated for fine adjustment, so that the accurate adjustment of the pressure is realized. After the pressure adjustment is completed, the operation port 19 is closed. According to the temperature requirement, liquid nitrogen is injected into the liquid nitrogen cavity 3 for cooling or the heating coil 41 is electrified for heating, and finally, the motor 12 is started after the rotating speed of the motor 12 is regulated by a computer for testing.
Claims (7)
1. A wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine is characterized in that: the device comprises a test cavity (1), wherein a rotating disc (2) and a liquid nitrogen cavity (3) which are oppositely arranged are arranged in the test cavity (1), a heating tool (4) is arranged on the surface, which is opposite to the rotating disc (2), of the liquid nitrogen cavity (3), a heating coil (41) is wound on the outer wall of the heating tool (4), and the heating tool (4) is opposite to the surface, which is opposite to the rotating disc (2), of the liquid nitrogen cavity and is detachably connected with a test fixture (5);
the rotating disc (2) comprises a disc body (201) and a cantilever (202), a connecting seat (203) is arranged at the edge of the disc body (201), the cantilever (202) is suspended above the rotating disc (2) along the diameter direction of the disc body (201) and one end of the cantilever is connected with the connecting seat (203), a plurality of pin seats (204) are formed in the surface, away from the disc body (201), of the cantilever (202) on one side, away from the connecting seat (203), of the disc body (201) by taking the center of the disc body as a boundary, along the length direction of the cantilever (202), a pin shaft (205) is inserted in the pin seats (204), pressure adjusting threads (206) are formed in the cantilever (202) in a penetrating mode along the axial direction of the disc body (201), pressure adjusting bolts (207) are connected with the pressure adjusting threads (206), and the bottoms of the pressure adjusting bolts (207) are in conflict with the disc body (201).
The bottom of the pin seat (204) penetrates through the cantilever (202) and is provided with a first through hole (208), a first pressure sensor (8) is arranged on the first through hole (208) in a penetrating manner, two second through holes (209) penetrating through the cantilever (202) are symmetrically arranged on two sides of the inner wall of the pin seat (204) along the axial direction of the pin seat (204), a second pressure sensor (9) is arranged on the second through holes (209) in a penetrating manner, and a first pressure signal transmitting terminal (81) connected with the first pressure sensor (8) through a wire and a second pressure signal transmitting terminal (91) connected with the second pressure sensor (9) through a wire are arranged on the disc body (201);
the test fixture (5) is annular, an annular groove (51) used for abutting a sample is formed in one side, facing the heating tool (4), of the test fixture (5), mounting holes (52) penetrating through the upper surface and the lower surface of the test fixture are formed in the circumferential direction of the test fixture (5), and mounting threads aligned with the mounting holes (52) are formed in the heating tool (4).
2. The wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine according to claim 1, wherein the machine is characterized in that: the test cavity (1) upper end opening is equipped with upper end cover (6) that matches, liquid nitrogen cavity (3) are located on upper end cover (6), liquid nitrogen cavity (3) upper end opening is equipped with liquid nitrogen cavity end cover (31) rather than matching, wear to be equipped with on liquid nitrogen cavity end cover (31) to stretch into liquid nitrogen level monitor (32), liquid nitrogen injection pipe (33) and liquid nitrogen overflow pipe (34) in liquid nitrogen cavity (3).
3. The wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine according to claim 2, wherein the machine is characterized in that: the top of the upper end cover (6) is provided with an acoustic emission sensor (7).
4. The wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine according to claim 1, wherein the machine is characterized in that: an infrared detector (10) is arranged on one side of the connecting seat (203) facing the test fixture (5).
5. The wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine according to claim 1, wherein the machine is characterized in that: the test chamber (1) bottom is connected with motor installing support (11), motor installing support (11) bottom is equipped with motor (12), motor shaft (121) of motor (12) pass motor installing support (11), disk body (201) bottom axial is equipped with rotation axis (210), motor shaft (121) with rotation axis (210) are connected.
6. The wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine according to claim 5, wherein the machine is characterized in that: the motor mounting bracket is characterized in that a bearing seat (13) is connected with the upper portion of the motor mounting bracket (11) in a threaded mode, a thrust bearing (14) is connected in the bearing seat (13), a rotating shaft (210) penetrates through and is fixed on the thrust bearing (14), a step groove (131) is formed in the opening of the bearing seat (13), and a convex ring (141) matched with the step groove (131) is radially protruded on the outer wall of the thrust bearing (14).
7. The wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine according to claim 1, wherein the machine is characterized in that: two vacuumizing flanges (15) are symmetrically arranged on the outer wall of the test cavity (1) in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811346385.1A CN109297848B (en) | 2018-11-13 | 2018-11-13 | Wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811346385.1A CN109297848B (en) | 2018-11-13 | 2018-11-13 | Wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109297848A CN109297848A (en) | 2019-02-01 |
| CN109297848B true CN109297848B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811346385.1A Active CN109297848B (en) | 2018-11-13 | 2018-11-13 | Wide temperature range self-adaptive adjustment multifunctional friction and wear testing machine |
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| KR19980080652A (en) * | 1997-03-28 | 1998-11-25 | 미즈노마사루 | Friction Wear Tester |
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| CN201034897Y (en) * | 2007-05-24 | 2008-03-12 | 张国珍 | Vacuum low-temperature frictional wear tester |
| CN102759489A (en) * | 2011-04-27 | 2012-10-31 | 中国人民解放军装甲兵工程学院 | Multifunctional vacuum friction and wear testing machine |
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| CN204471860U (en) * | 2015-02-13 | 2015-07-15 | 可隆科技特（张家港）特种纺织品有限公司 | Automobile fabric heat embossing machine |
| CN107421832A (en) * | 2017-03-02 | 2017-12-01 | 中国科学院近代物理研究所 | A kind of high-temperature vacuum friction wear testing machine |
| CN108037069A (en) * | 2017-11-14 | 2018-05-15 | 洛阳理工学院 | One kind pin disk frictional testing machine |
| CN209296505U (en) * | 2018-11-13 | 2019-08-23 | 四川日机密封件股份有限公司 | A kind of width temperature range automatic adjusument multifunction friction wear testing machine |
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| KR19980080652A (en) * | 1997-03-28 | 1998-11-25 | 미즈노마사루 | Friction Wear Tester |
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| CN201034897Y (en) * | 2007-05-24 | 2008-03-12 | 张国珍 | Vacuum low-temperature frictional wear tester |
| CN102759489A (en) * | 2011-04-27 | 2012-10-31 | 中国人民解放军装甲兵工程学院 | Multifunctional vacuum friction and wear testing machine |
| CN202701487U (en) * | 2012-08-23 | 2013-01-30 | 徐州大屯工贸实业公司 | Plate cut adjusting compression roller for disc shearing port of aluminum strip slitting cutter |
| CN204471860U (en) * | 2015-02-13 | 2015-07-15 | 可隆科技特（张家港）特种纺织品有限公司 | Automobile fabric heat embossing machine |
| CN107421832A (en) * | 2017-03-02 | 2017-12-01 | 中国科学院近代物理研究所 | A kind of high-temperature vacuum friction wear testing machine |
| CN108037069A (en) * | 2017-11-14 | 2018-05-15 | 洛阳理工学院 | One kind pin disk frictional testing machine |
| CN209296505U (en) * | 2018-11-13 | 2019-08-23 | 四川日机密封件股份有限公司 | A kind of width temperature range automatic adjusument multifunction friction wear testing machine |
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