CN117169032A - Low-cost high-adjustability friction and wear test device - Google Patents
Low-cost high-adjustability friction and wear test device Download PDFInfo
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- CN117169032A CN117169032A CN202311126545.2A CN202311126545A CN117169032A CN 117169032 A CN117169032 A CN 117169032A CN 202311126545 A CN202311126545 A CN 202311126545A CN 117169032 A CN117169032 A CN 117169032A
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- 230000007246 mechanism Effects 0.000 claims abstract description 51
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- 230000033228 biological regulation Effects 0.000 claims description 3
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- 238000012544 monitoring process Methods 0.000 abstract description 3
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- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention relates to the technical field of friction and wear test devices, and particularly discloses a low-cost high-adjustability friction and wear test device which comprises a frame, a driving mechanism, a horizontal adjusting mechanism, a vertical adjusting mechanism and a friction and wear test mechanism. According to the invention, the driving mechanism drives the rotating cup to rotate together with the sample placed on the rotating cup, the sample clamp is used for clamping the sample, the force sensor is used for monitoring the force change in the test process, and the balance degree of the balance rod is adjusted through the adjustment of the position of the balancing weight. The invention has the advantages of convenient operation and low cost by simply and practically adjusting the firm friction position and switching the friction pair tests in various forms.
Description
Technical Field
The invention relates to the field of friction and wear test devices, in particular to a low-cost high-adjustability friction and wear test device.
Background
During operation of the machine, friction is generated between the mutually contacting parts due to relative movement, and wear is the result of friction. Abrasion causes the loss of surface materials, changes the size of parts, and directly affects the service life of the parts. The frictional wear performance index of the material is mainly detected by a frictional wear testing machine, and the frictional wear testing machine can conveniently measure the frictional performance, so that the frictional wear testing machine is an essential experimental device for carrying out frictional test research.
The friction and wear testing machine has a plurality of types, wherein the ball disc type friction and wear testing machine has compact structure and convenient sample preparation, and is a friction and wear testing machine with low cost and high adjustability, the friction and wear testing device is widely applied, but most friction and wear testing machines in the current market only can carry out friction tests of a single type friction pair, the friction position is not adjusted, and a small number of testing machines capable of carrying out friction pair tests of various types have complex structure and high price. For example, the chinese patent application No. 201810843357.4 discloses a ball-and-disc frictional wear testing machine in which the rotation speed of a sample can be adjusted by adjusting the weight mass in a weight groove and the loading force; in practice, this application only addresses the adjustment of the loading force and the test rotational speed, and does not implement the tribological test and the friction position adjustment of the various friction pairs.
Therefore, a new low-cost high-adjustability frictional wear test device is needed, and a good solution is provided for the problems of incomplete functions and high manufacturing cost of the existing frictional wear test device.
Disclosure of Invention
The invention aims to provide a friction and wear test device with low cost and high adjustability, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a low-cost high adjustable degree frictional wear test device, includes frame, actuating mechanism, horizontal adjustment mechanism, vertical adjustment mechanism and frictional wear test mechanism:
the rack comprises a rack upper bottom plate and a rack lower bottom plate, and the rack upper bottom plate is fixedly connected with the rack lower bottom plate through four support rods;
the horizontal adjusting mechanism is fixedly arranged on the bottom plate of the frame, and a horizontal moving seat in the horizontal adjusting mechanism can adjust the position of the horizontal moving seat in the horizontal plane in the left-right direction; the vertical adjusting mechanism is arranged on the horizontal moving seat, and the lifting seat in the vertical adjusting mechanism can be used for adjusting the position in the vertical direction;
the friction and wear test mechanism comprises a pair of bearing seats fixedly mounted on the lifting seat, wherein the bearing seats on two sides are rotationally connected with balance rods, one end of each balance rod is fixedly connected with an external thread bent shaft through a cross optical axis, the tail end of each external thread bent shaft is in threaded connection with a balancing weight, each balance rod is fixedly connected with one end of a horizontally arranged force transducer through a T-shaped plate, the other end of each force transducer is fixedly connected with a connecting piece, and a vertically arranged sample clamp is connected to the connecting piece; the friction and wear test mechanism further comprises a rotating cup rotatably mounted on the bottom plate of the rack, and the rotating cup is positioned right below the sample clamp;
the driving device comprises a direct-current gear motor, the direct-current gear motor is arranged on a lower bottom plate of the frame through a motor bracket and an L-shaped plate, a synchronous pulley is arranged at the output end of the direct-current gear motor, power is transmitted to a driving shaft through a synchronous belt by the synchronous pulley, and the upper end of the driving shaft is fixedly connected with a rotating cup.
Further, the horizontal adjusting mechanism comprises a horizontal handle wheel, a horizontal frame, a horizontal sliding rod, a horizontal moving seat, a horizontal screw rod and a horizontal fastener;
the horizontal frame is U-shaped, the bottom of the horizontal frame is fixedly connected to the bottom plate of the frame, two horizontal sliding rods are symmetrically arranged between two side walls of the horizontal frame, a horizontal screw is positioned between the two horizontal sliding rods and is respectively and rotatably connected to the two side walls of the horizontal frame, and one end of the horizontal screw penetrates through the side wall of the horizontal frame and is fixedly connected with the horizontal handle wheel; the horizontal moving seat is connected to the two horizontal sliding rods in a sliding mode, and the horizontal moving seat is connected with the horizontal screw rod in a threaded mode.
Further, the vertical adjusting mechanism comprises a vertical handle wheel, a vertical frame, a vertical sliding rod, a vertical moving seat, a vertical screw rod and a vertical fastener;
the vertical frame consists of an upper fixing plate and a lower fixing plate, the two fixing plates are fixedly connected through two vertical sliding rods, and the fixing plate at the lower end is fixedly arranged on a horizontal moving seat through bolts; the vertical screw rod is positioned between the two vertical slide bars, two ends of the vertical screw rod are rotatably connected to the two fixing plates, and the upper end of the vertical screw rod penetrates through the fixing plate at the upper end and is fixedly connected with the vertical handle wheel; the vertical moving seat is connected to the two vertical sliding rods in a sliding manner, and is in threaded connection with the vertical screw rod; the lifting seat is fixedly arranged on one side of the vertical moving seat.
Further, the horizontal fastener is arranged at the outer side of the connection between the horizontal screw rod and the horizontal frame and used for limiting the rotation of the horizontal screw rod.
Further, the vertical fastener is arranged at the joint of the vertical screw rod and the upper end fixing plate and used for limiting the rotation of the vertical screw rod.
Further, sample anchor clamps fixedly connected with anchor clamps head, install the sample on the anchor clamps head the connecting piece top is through screw hole fixed load platform support column, fixed mounting has the tray on the load platform support column, through placing weight regulation and control load size.
Further, the fixture head is detachably and fixedly connected with the sample fixture.
Further, the rotating cup is detachably and fixedly connected with the driving shaft.
Further, M foundation feet are fixedly arranged below the lower bottom plate of the machine frame through threaded holes, and the lower bottom plate of the machine frame is ensured to be horizontally and vertically placed on a horizontal plane through a horizontal measuring instrument.
Further, the L-shaped plate can move back and forth in the groove above the lower bottom plate of the frame to adjust the center distance of the belt wheels, so that the synchronous belt is re-tensioned.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the driving mechanism drives the rotating cup to rotate together with the sample placed on the rotating cup, the sample clamp is used for clamping the sample, the force sensor is used for monitoring the force change in the test process, and the balance degree of the balance rod is adjusted through the adjustment of the position of the balancing weight.
2. In the invention, the horizontal adjusting mechanism and the vertical adjusting mechanism are respectively used for adjusting the transverse position and the longitudinal position of the sample clamp, thereby realizing the adjustment of the friction position of the experimental sample.
3. In the invention, various contact type friction pair tests can be carried out; the clamp head rotating cup can be optionally detached and replaced, and various friction pair tests can be carried out by detaching and replacing clamp heads and rotating cups made of different materials.
In conclusion, the invention has the advantages of convenient operation and low cost by simply and practically adjusting the firm friction position and switching the friction pair tests in various forms.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an upper oblique view of the present invention;
FIG. 3 is an enlarged schematic view of the structure shown at A in FIG. 1;
FIG. 4 is a left side view of the present invention;
fig. 5 is an enlarged schematic view of the structure at B in fig. 2.
In the figure: 1. A horizontal adjustment mechanism; 2. C-stage hexagon head bolts; 3. A balance bar; 4. Bending the shaft; 5. full thread C level of the hexagon head bolt; 6. Balancing weight; 7. A cross optical axis; 8. A bearing seat; 9. A vertical adjustment mechanism; 10. A lifting seat; 11. A T-shaped plate; 12. A load cell; 13. A weight; 14. A tray; 15. A platform support column; 16. A connecting piece; 17. A sample holder; 18. A bottom plate on the frame; 19. A rotor; 20. A clamp head; 21. A drive shaft; 22. A synchronous belt; 23. A foot margin; 24. A lower bottom plate of the frame; 25. An L-shaped plate; 26. M10 bolts; 27. A direct current speed reduction motor; 28. A support rod; 29. A motor bracket; 30. M4 bolts; 31. A synchronous pulley; 32. Loading a sample; 33. A lower sample; 101. A hand wheel; 102. A horizontal frame; 103. A horizontal slide bar; 104. A horizontal moving seat; 105. A horizontal screw; 106. a horizontal fastener; 901. A hand wheel is vertically arranged; 902. A vertical frame; 903. A vertical slide bar; 904. a vertical moving seat; 905. A vertical screw; 906. A vertical fastener.
Detailed Description
Example 1: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test device includes a frame, a driving mechanism, a horizontal adjustment mechanism 1, a vertical adjustment mechanism 9, and a frictional wear test mechanism:
the frame comprises a frame upper bottom plate 18 and a frame lower bottom plate 24, and the frame upper bottom plate 18 is fixedly connected with the frame lower bottom plate 24 through four support rods 28;
the horizontal adjusting mechanism 1 is fixedly arranged on the bottom plate 18 of the frame, and the horizontal moving seat 104 in the horizontal adjusting mechanism can adjust the position in the left-right direction in the horizontal plane; the vertical adjusting mechanism 9 is arranged on the horizontal moving seat 104, and the lifting seat 10 in the vertical adjusting mechanism can be used for adjusting the position in the vertical direction;
the friction and wear test mechanism comprises a pair of bearing blocks 8 fixedly arranged on a lifting seat 10, wherein the bearing blocks 8 on two sides are rotationally connected with a balance rod 3, one end of the balance rod 3 is fixedly connected with an external thread bent shaft 4 through a cross optical axis 7, the tail end of the external thread bent shaft 4 is in threaded connection with a balancing weight 6, the balance rod 3 is fixedly connected with one end of a horizontally arranged force transducer 12 through a T-shaped plate 11, the other end of the force transducer 12 is fixedly connected with a connecting piece 16, and a vertically arranged sample clamp 17 is connected to the connecting piece 16; the friction and wear test mechanism further comprises a rotating cup 19 rotatably mounted on the bottom plate 18 of the stand, and the rotating cup 19 is positioned right below the sample clamp 17;
the driving device comprises a direct-current gear motor 27, the direct-current gear motor 27 is arranged on a lower bottom plate 24 of the machine frame through a motor bracket 29 and an L-shaped plate 25, a synchronous pulley 31 is arranged at the output end of the direct-current gear motor 27, the synchronous pulley 31 transmits power to a driving shaft 21 through a synchronous belt 22, and the upper end of the driving shaft 21 is fixedly connected with a rotating cup 19.
In this embodiment, the frictional wear test mechanism is a core mechanism of a frictional wear test, the driving mechanism drives the rotating cup 19 to rotate together with the sample placed thereon, the sample clamp 17 is used for clamping the sample, the load cell 12 is used for monitoring the force change in the test process, and the balance degree of the balance rod 3 is adjusted by adjusting the position of the balancing weight 6. In this embodiment, the horizontal adjustment mechanism 1 and the vertical adjustment mechanism 9 are used to adjust the lateral position and the longitudinal position of the sample holder 17, respectively, so as to achieve and experiment the adjustment of the friction position of the sample.
Example 2: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test device is different from embodiment 1 in that the horizontal adjustment mechanism 1 includes a horizontal handle wheel 101, a horizontal frame 102, a horizontal slide bar 103, a horizontal moving seat 104, a horizontal screw 105 and a horizontal fastener 106;
the horizontal frame 102 is U-shaped, the bottom of the horizontal frame 102 is fixedly connected to the bottom plate 18 of the frame, two horizontal sliding rods 103 are symmetrically arranged between two side walls of the horizontal frame 102, a horizontal screw 105 is positioned between the two horizontal sliding rods 103, the horizontal screw 105 is respectively and rotatably connected to two side walls of the horizontal frame 102, and one end of the horizontal screw 105 penetrates through the side walls of the horizontal frame 102 and is fixedly connected with the horizontal handle wheel 101; the horizontal moving seat 104 is slidably connected to the two horizontal slide bars 103, and the horizontal moving seat 104 is screwed with the horizontal screw 105.
In this embodiment, the position of the horizontal moving seat 104 is regulated and controlled by rotating the horizontal screw 105, so that the regulation degree is high, and the operation is convenient.
Example 3: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test device is different from embodiment 1 in that the vertical adjustment mechanism 9 includes a vertical handle hand wheel 901, a vertical frame 902, a vertical slide rod 903, a vertical moving seat 904, a vertical screw 905, and a vertical fastener 906;
the vertical frame 902 is composed of an upper fixing plate and a lower fixing plate, the two fixing plates are fixedly connected through two vertical sliding rods 903, and the fixing plate at the lower end is fixedly arranged on the horizontal moving seat 104 through bolts; the vertical screw 905 is positioned between the two vertical slide bars 903, two ends of the vertical screw 905 are rotatably connected to the two fixed plates, and the upper end of the vertical screw 905 passes through the fixed plate at the upper end and is fixedly connected with the vertical handle 901; the vertical moving seat 904 is slidably connected to two vertical sliding rods 903, and the vertical moving seat 904 is in threaded connection with a vertical screw 905; the elevating seat 10 is fixedly installed at one side of the vertical movement seat 904.
In this embodiment, the position of the lifting seat 10 is regulated and controlled by rotating the vertical screw 905, so that the degree of regulation is high, and the operation is convenient.
Example 4: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test device is different from embodiment 2 in that a horizontal fastener 106 is provided on the outer side of the connection between the horizontal screw 105 and the horizontal frame 102 for restricting the rotation of the horizontal screw 105.
In this embodiment, the horizontal fastener 106 is used to limit the rotation of the horizontal screw 105, so as to avoid the horizontal displacement of the sample fixture 17 during the test.
Example 5: referring to fig. 1 to 5, a low-cost and high-adjustability frictional wear test device is different from embodiment 3 in that a vertical fastener 906 is provided at the junction of the vertical screw 905 and the upper end fixing plate for restricting the rotation of the vertical screw 905.
The vertical fasteners 906 in this embodiment are used to limit the rotation of the vertical screw 905 to avoid vertical displacement of the sample holder 17 during testing.
Example 6: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test apparatus is different from embodiment 1 in that a sample holder 17 is fixedly connected with a holder head 20, an upper sample 32 is mounted on the holder head 20, a load platform support column 15 is fixed above a connecting member 16 through a threaded hole, a tray 14 is fixedly mounted on the load platform support column 15, and the load is adjusted by placing weights 13.
In the embodiment, the load is regulated and controlled by placing the weight 13, and the operation is simple and convenient.
Example 7: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test apparatus is different from embodiment 6 in that the clamp head 20 is detachably and fixedly connected to the sample clamp 17.
In this embodiment, the fixture head 20 is detachably and fixedly connected with the sample fixture 17, and the fixture head 20 can be replaced according to test requirements, so that various friction pair tests are realized.
Example 8: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test device is different from embodiment 1 in that the rotor 19 is detachably and fixedly connected to the drive shaft 21.
In this embodiment, the rotor 19 is also a detachable connection structure, and is replaced by being matched with the fixture 20.
Example 9: referring to fig. 1 to 5, a low-cost high-adjustability frictional wear test device is different from embodiment 1 in that M10 feet 23 are fixedly mounted under a chassis lower plate 24 through threaded holes, and the chassis lower plate 24 is ensured to be horizontally and vertically placed on a horizontal plane through a horizontal measuring instrument.
Example 10: referring to fig. 1 to 5, a low-cost and high-adjustability frictional wear test apparatus is different from embodiment 1 in that the L-shaped plate 25 can move back and forth in the groove above the lower base plate 24 of the frame to adjust the center distance of the pulleys 31, thereby re-tensioning the timing belt 22.
In this embodiment, the L-shaped plate 25 ensures the contact position of the clamp head and the rotor, and is convenient for adjusting the friction position.
Claims (10)
1. The utility model provides a low-cost high adjustable degree frictional wear test device, includes frame, actuating mechanism, horizontal adjustment mechanism (1), vertical adjustment mechanism (9) and frictional wear test mechanism, its characterized in that:
the machine frame comprises a machine frame upper bottom plate (18) and a machine frame lower bottom plate (24), wherein the machine frame upper bottom plate (18) is fixedly connected with the machine frame lower bottom plate (24) through four support rods (28);
the horizontal adjusting mechanism (1) is fixedly arranged on a bottom plate (18) on the frame, and a horizontal moving seat (104) in the horizontal adjusting mechanism can adjust the position in the left-right direction in a horizontal plane; the vertical adjusting mechanism (9) is arranged on the horizontal moving seat (104), and the lifting seat (10) in the vertical adjusting mechanism can be used for adjusting the position in the vertical direction;
the friction and wear test mechanism comprises a pair of bearing seats (8) fixedly mounted on a lifting seat (10), a balance rod (3) is rotatably connected to the bearing seats (8) on two sides, one end of the balance rod (3) is fixedly connected with an external thread bent shaft (4) through a cross optical axis (7), the tail end of the external thread bent shaft (4) is in threaded connection with a balancing weight (6), the balance rod (3) is fixedly connected with one end of a horizontally arranged load cell (12) through a T-shaped plate (11), the other end of the load cell (12) is fixedly connected with a connecting piece (16), and a vertically arranged sample clamp (17) is connected to the connecting piece (16); the friction and wear test mechanism further comprises a rotating cup (19) rotatably mounted on the bottom plate (18) of the stand, and the rotating cup (19) is positioned right below the sample clamp (17);
the driving device comprises a direct-current gear motor (27), the direct-current gear motor (27) is arranged on a lower bottom plate (24) of the frame through a motor bracket (29) and an L-shaped plate (25), a synchronous pulley (31) is arranged at the output end of the direct-current gear motor (27), the synchronous pulley (31) transmits power to a driving shaft (21) through a synchronous belt (22), and the upper end of the driving shaft (21) is fixedly connected with a rotating cup (19).
2. The low cost high adjustability frictional wear test device of claim 1, wherein: the horizontal adjusting mechanism (1) comprises a horizontal handle wheel (101), a horizontal frame (102), a horizontal sliding rod (103), a horizontal moving seat (104), a horizontal screw rod (105) and a horizontal fastener (106);
the horizontal frame (102) is U-shaped, the bottom of the horizontal frame (102) is fixedly connected to a bottom plate (18) on the frame, two horizontal sliding rods (103) are symmetrically arranged between two side walls of the horizontal frame (102), a horizontal screw (105) is positioned between the two horizontal sliding rods (103), the horizontal screw (105) is respectively and rotatably connected to two side walls of the horizontal frame (102), and one end of the horizontal screw (105) penetrates through the side walls of the horizontal frame (102) and is fixedly connected with the horizontal handle wheel (101); the horizontal moving seat (104) is connected to the two horizontal sliding rods (103) in a sliding mode, and the horizontal moving seat (104) is connected with the horizontal screw rod (105) in a threaded mode.
3. The low cost high adjustability frictional wear test device of claim 1, wherein: the vertical adjusting mechanism (9) comprises a vertical handle wheel (901), a vertical frame (902), a vertical sliding rod (903), a vertical moving seat (904), a vertical screw rod (905) and a vertical fastener (906);
the vertical frame (902) consists of an upper fixing plate and a lower fixing plate, the two fixing plates are fixedly connected through two vertical sliding rods (903), and the fixing plate at the lower end is fixedly arranged on a horizontal moving seat (104) through bolts; the vertical screw rod (905) is positioned between the two vertical slide bars (903), two ends of the vertical screw rod (905) are rotatably connected to the two fixing plates, and the upper end of the vertical screw rod (905) penetrates through the fixing plate at the upper end and is fixedly connected with the vertical handle hand wheel (901); the vertical moving seat (904) is connected to the two vertical sliding rods (903) in a sliding manner, and the vertical moving seat (904) is in threaded connection with a vertical screw rod (905); the lifting seat (10) is fixedly arranged on one side of the vertical moving seat (904).
4. The low cost high adjustability frictional wear test device of claim 2, wherein: the horizontal fastener (106) is arranged at the outer side of the connection between the horizontal screw (105) and the horizontal frame (102) and is used for limiting the rotation of the horizontal screw (105).
5. A low cost, high adjustability frictional wear test device as set forth in claim 3, wherein: the vertical fastener (906) is arranged at the joint of the vertical screw rod (905) and the upper end fixing plate and used for limiting the rotation of the vertical screw rod (905).
6. The low cost high adjustability frictional wear test device of claim 1, wherein: sample anchor clamps (17) fixedly connected with anchor clamps head (20), install sample (32) on anchor clamps head (20) connecting piece (16) top is through screw hole fixed load platform support column (15), fixed mounting has tray (14) on load platform support column (15), through placing weight (13) regulation and control load size.
7. The low cost, high adjustability frictional wear test device of claim 6, wherein: the clamp head (20) is detachably and fixedly connected with the sample clamp (17).
8. The low cost high adjustability frictional wear test device of claim 1, wherein: the rotating cup (19) is detachably and fixedly connected with the driving shaft (21).
9. The low cost high adjustability frictional wear test device of claim 1, wherein: m10 foundation legs (23) are fixedly arranged below the machine frame lower bottom plate (24) through threaded holes, and the machine frame lower bottom plate (24) is ensured to be horizontally and vertically placed on a horizontal plane through a horizontal measuring instrument.
10. The low cost high adjustability frictional wear test device of claim 1, wherein: the L-shaped plate (25) can move back and forth in a groove above the lower bottom plate (24) of the machine frame, and is used for adjusting the center distance of the belt wheels (31) so as to re-tension the synchronous belt (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311126545.2A CN117169032A (en) | 2023-09-01 | 2023-09-01 | Low-cost high-adjustability friction and wear test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311126545.2A CN117169032A (en) | 2023-09-01 | 2023-09-01 | Low-cost high-adjustability friction and wear test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117169032A true CN117169032A (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311126545.2A Withdrawn CN117169032A (en) | 2023-09-01 | 2023-09-01 | Low-cost high-adjustability friction and wear test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117169032A (en) |
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2023
- 2023-09-01 CN CN202311126545.2A patent/CN117169032A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20231205 |
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| WW01 | Invention patent application withdrawn after publication |