CN108776018B - Test device capable of measuring seizure resistance property of shaft parts and application thereof - Google Patents
Test device capable of measuring seizure resistance property of shaft parts and application thereof Download PDFInfo
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- CN108776018B CN108776018B CN201810342685.6A CN201810342685A CN108776018B CN 108776018 B CN108776018 B CN 108776018B CN 201810342685 A CN201810342685 A CN 201810342685A CN 108776018 B CN108776018 B CN 108776018B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a test device capable of measuring seizure resistance property of shaft parts and application thereof, and the test device comprises a workbench, a loading bracket, a first movable rack, a second movable rack and a loading piston; connecting rods are symmetrically arranged on two sides of the lower part of the loading piston in a rotating way, one end of each connecting rod, which is far away from the loading piston, is provided with a loading lever in a rotating way, the lower part of each loading lever is connected with a loading bracket in a rotating way, the bottom end of each loading lever is provided with a clamping block in a rotating way, and the opposite surfaces of the clamping blocks are provided with V-shaped grooves which can be matched with a test shaft; the first movable rack is rotatably provided with a center, the second movable rack is rotatably provided with a transmission shaft, the center and the transmission shaft are positioned on the same horizontal line, one end of the transmission shaft, which is close to the center, is provided with a mounting hole for mounting a test shaft, and the other end of the transmission shaft is used for being connected with a driving device for driving the transmission shaft to rotate. The beneficial effects of this application are: the motion state and bearing form of the shaft parts can be accurately simulated, and the seizure resistance property of the shaft parts can be directly measured.
Description
Technical Field
The invention relates to a test device capable of measuring seizure resistance property of shaft parts and application thereof.
Background
Seizure, also known as soldering, is one of the main forms of early failure of mechanical parts and is a great hazard in engineering. The failure mechanism is that when the radial pressure of the friction pair is large enough, the part of the local bulge on the contact surface generates solid phase welding and forms an adhesion point due to plastic deformation. When the adhesive dots are sheared and released under shear stress under relative sliding, part of the metal is transferred from one surface to the other, so that engagement is formed. Experimental study shows that the main factors influencing the seizure resistance property of the mechanical part comprise materials, surface machining precision, heat treatment and surface treatment process, lubrication condition among friction pair couplings and the like.
In engineering practice, the shaft part is used as a main structural member and mostly bears the effects of loads such as bending moment, torque and the like. For high speed, heavy duty shaft-like parts, seizure has become one of its primary failure modes.
At present, friction and wear tests are mostly adopted at home and abroad, and the seizure resistance performance of the material is indirectly tested by means of visual measurement of friction mark width, weighing of mass change, measurement of friction moment, metallographic analysis and the like. According to the related test standard, the coupling form of the friction pair of the friction wear test piece mainly comprises a ring-block type, a pin-disc type, a four-ball type and the like, and the motion state and the bearing form of the shaft part are difficult to simulate.
Disclosure of Invention
The invention aims to provide a test device capable of measuring the seizure resistance property of shaft parts, which is used for accurately simulating the motion state and the bearing form (torsion) of the shaft parts and directly measuring the seizure resistance property of the shaft parts.
In order to solve the problems, the invention adopts the following technical scheme: the test device comprises a workbench, a loading bracket arranged on the workbench, a first movable rack and a second movable rack which are arranged on the workbench and form a horizontal moving pair with the workbench, and a loading piston which is arranged on the loading bracket and forms a vertical moving pair with the loading bracket; the two sides of the lower part of the loading piston are symmetrically provided with connecting rods in a rotating way, one end of each connecting rod far away from the loading piston is provided with a loading lever in a rotating way, the lower part of the loading lever is rotationally connected with the loading bracket, the bottom end of the loading lever is rotationally provided with a clamping block, and the opposite surfaces of the clamping blocks are provided with V-shaped grooves which can be matched with the test shaft; the first movable support is rotatably provided with a center, the second movable support is rotatably provided with a transmission shaft, the center and the transmission shaft are positioned on the same horizontal line, one end, close to the center, of the transmission shaft is provided with a mounting hole for mounting a test shaft, and the other end of the transmission shaft is used for being connected with a driving device for driving the transmission shaft to rotate. This application is through first movable frame and the experimental axle of second movable frame centre gripping, two clamp splice are used for with in the test with the contact of experimental axle for add the load on experimental epaxial, the transmission shaft rotates, drive experimental axle rotates, friction between experimental axle and the clamp splice and the radial force simulation that the clamp splice was applyed experimental axle under the real condition experimental axle's atress condition, and whether have the interlock or lock the phenomenon and judge experimental axle anti-seizing performance whether qualified through observing experimental in-process experimental axle, this application can be effectual the anti-seizing performance of test experimental axle whether qualified, and the simple structure of this application, convenient to use.
As a further improvement of the invention, the loading piston upwards penetrates through the loading support, a supporting platform for placing the counterweight is arranged at the top of the loading piston, the loading piston is sleeved with a return spring, the top end of the return spring is contacted with the supporting platform, and the bottom end of the return spring is contacted with the top end of the loading support. This application is through setting up reset spring, can apply ascending power to loading piston when loading piston loses effort, makes loading piston automatic return, further with make things convenient for the use of this application.
As a further improvement of the invention, the loading bracket comprises supporting columns at two sides, a loading cross beam for connecting the two supporting columns and a supporting block arranged at the top end of the supporting columns, a piston through hole penetrating through the supporting block is formed in the supporting block, the loading piston is arranged in the piston through hole and can move up and down in the piston through hole, and the lower part of the loading lever is rotationally connected with the loading cross beam. The space that forms between two spinal branch daggers in this application is used for installing test axle to the convenience is set up the loading piston directly over test axle, further makes things convenient for the use of this application promptly, improves the experimental precision of this application again.
As a further improvement of the invention, the parts of the two support columns which are rotationally connected with the loading cross beam are bent towards the directions away from each other. This application is through buckling of anti-stay, increases the space between two spinal branch daggers, more convenient operation.
As a further improvement of the invention, the upper surface of the workbench is provided with a guide rail, and the bottoms of the first movable rack and the second movable rack are respectively provided with a first guide groove and a second guide groove which are matched with the guide rail. The relative sliding between the first movable rack and the second movable rack and the workbench is realized through the matching of the guide rail and the guide groove, and the sliding direction of the two movable racks is always along the direction of the guide rail, so that the moving direction of the two movable racks is better to control.
As a further development of the invention, the bottom of the first movable frame is provided with a first fastening means for fixing it to the guide rail, and the bottom of the second movable frame is provided with a second fastening means for fixing it to the guide rail. The application sets up two fastener, is used for fixing two movable frames on the guide rail respectively, avoids two movable frames to slide on the workstation and influence the normal clear of test in the test process.
The invention also provides a method for measuring the seizure resistance property of a test shaft by adopting the test device, which has the following specific technical scheme that:
step 1, moving a first movable frame towards a direction away from a second movable frame, installing one end of a test shaft to be tested in a mounting hole on a transmission shaft, keeping the test shaft pass through a gap between two clamping blocks, moving the first movable frame to enable a center to prop against the end part of the test shaft away from one end of the second movable frame, and pasting a pressure sensor on the surface of the test shaft;
step 2, preloading on a loading piston to enable the loading piston to move downwards, and removing the preloaded load after the clamping block can stably clamp the test shaft; step 3, starting a driving device connected with the transmission shaft;
step 4, gradually adding weights on the supporting platform, reading the load on the test shaft through the pressure sensor, and enabling the test shaft to run for a period of time T1 when the load on the test shaft is added to be F1;
step 5, after the running-in period of the step 4 is completed, weights are added step by step, and each time delta F is added, the test shaft is kept for carrying out time delta T and running-in until the load is increased to FN, and the test shaft enters a stable running-in period, and if the phenomenon of occlusion occurs, the test shaft is regarded as unqualified in anti-occlusion performance;
and 6, after entering a stable running-in period, locking the running-in with the load of FN and keeping the duration of TN, and if the phenomenon of occlusion and locking still does not occur, judging that the anti-occlusion performance is qualified.
As a further improvement of the invention, the invention also comprises the step 2.1 of manually rotating the transmission shaft, and measuring the runout error of the test shaft rotating for one circle by adopting a dial indicator to be not more than 0.002 millimeter.
As a further improvement of the present invention, the test shaft was replaced, and steps 1 to 6 were repeated to determine the seizure resistance property of another test shaft.
The method can directly and accurately measure the seizure resistance property of the shaft parts, and is carried out on the premise of adopting the test device, so that all the advantages of the device are possessed by the method.
The invention further aims to provide a method for measuring the extreme seizure resistance of the test shaft, which comprises the following steps that step 7 is additionally arranged on the basis of the method for measuring the seizure resistance of the test shaft, after the running-in period TN is kept in a stable running-in period, the load is continuously increased until seizure and locking phenomena occur, and the weight of the weight added on the supporting platform at the moment is recorded, namely the extreme seizure resistance of the test shaft.
The method can measure the extreme seizure resistance of the shaft parts, and is carried out on the premise of adopting the test device, so that all the advantages of the device are possessed by the method.
In summary, the beneficial effects of the invention are as follows: the application can accurately simulate the motion state and bearing form of the shaft parts, directly measure the seizure resistance property of the shaft parts, and has the advantages of simple structure and convenient use.
Drawings
Fig. 1 is a front view of the present application.
Fig. 2 is a left side view of the present application.
Fig. 3 is a front view showing the clamping blocks in the present application.
Fig. 4 is a cross-sectional view of a clamp block in the present application.
Wherein: 1. a work table; 2. loading a bracket; 3. a first movable frame; 4. a second movable frame; 5. loading a piston; 6. a connecting rod; 7. loading a lever; 8. clamping blocks; 9. a test shaft; 10. a V-shaped groove; 11. a center; 12. a transmission shaft; 13. a mounting hole; 14. a support platform; 15. a return spring; 16. a support column; 17. loading a cross beam; 18. a support block; 19. a guide rail; 20. a first fastening means; 21. a second fastening means; 22. a first through hole; 23. a second through hole; 24. a positioning pin; 25. a mounting groove; 26. and (5) installing the through holes.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
Embodiment one:
the test device capable of measuring the seizure resistance property of shaft parts, as shown in fig. 1 and 2, comprises a workbench 1, a loading support 2 with the bottom end detachably arranged on the workbench 1, a first movable frame 3 and a second movable frame 4 which are arranged on the workbench 1 and form a horizontal moving pair with the workbench 1, and a loading piston 5 which is arranged on the top of the loading support 2 and forms a vertical moving pair with the loading support 2, wherein the first movable support 3 and the second movable frame 4 slide along the direction vertical to the loading support 2.
The application is in the lower part both sides of loading piston 5 be provided with left and right sides two connecting rods 6 through the rotation of living hinge symmetry, the one end that loading piston 5 was kept away from to two connecting rods 6 rotates respectively through living hinge and is provided with a loading lever 7, loading lever 7 lower part and loading support 2 be connected through living hinge rotation and be provided with a clamp splice 8 through each rotation of living hinge in loading lever 7's bottom, two clamp splice 8 face in opposite directions on respectively open have one can with test axle 9 matched with V-arrangement groove 10, the contained angle of V-arrangement groove 10 is 90 degrees in this application. Two connecting rods 6 in this application are "eight" style of calligraphy and arrange, and two loading levers 7 are the arrangement of falling "eight" style of calligraphy, and the lower part of loading lever 7 is crooked, is an obtuse angle with the upper portion of loading lever 7, clamp splice 8 keep away from one side of V-arrangement groove 10 and open and have the mounting groove 25 that runs through it from top to bottom, as shown in fig. 3 and fig. 4, V-arrangement groove 10 level in this application is offered to the direction of seting up of V-arrangement groove 10 is unanimous with the length direction of test axle under the state of use, opens on clamp splice 8 horizontally has cylindric installation through-hole 26, installation through-hole 26 communicate with each other with mounting groove 25, the bottom of loading lever 7 stretch into in the mounting groove 25 and realize the swivelling joint of adding lever 7 and clamp splice 8 through the cylindric lock that alternates in installation through the installation through-hole 26.
The application is in first movable frame 3 upper portion open along the direction with loading support 2 vertically has first through-hole 22, rotates through deep groove ball bearing in first through-hole 22 and is provided with top 11, and the tip of top 11 sets up towards the direction of second movable frame 4, opens at second movable frame 4 upper portion has second through-hole 23, rotates through the deep groove ball bearing in second through-hole 23 and is provided with transmission shaft 12, top 11 and transmission shaft 12's central line lie in same horizontal line, transmission shaft 12 be close to top 11's one end and open along its central line has the mounting hole 13 that is used for installing test shaft 9 to radially open on transmission shaft 12 have the location pinhole that communicates with each other with mounting hole 13, when installing test shaft 9 in mounting hole 13, adopt locating pin 24 to insert in the location pinhole and make the locating pin pass in the radial locating hole of seting up of test shaft along the test shaft, accomplish the fixed of test shaft transmission shaft 12, the other end of transmission shaft 12 is used for connecting and driving its pivoted drive arrangement (not shown in the figure), the preferred adoption motor of drive arrangement in this application, the transmission shaft of motor has the drive shaft is kept away from the drive shaft 12 through first movable frame 3 through the active coupling with the first transmission shaft.
The application load piston 5 upwards run through load support 2 to be provided with the supporting platform 14 that is used for placing the counter weight at the top of load piston 5, the supporting platform 14 in this application and load piston 5 accessible welded mode fixed connection, also can both integrated into one piece make, load piston 5 on the cover be equipped with reset spring 15, reset spring 15's top and supporting platform 14 contact, reset spring 15's bottom and load support 2's top contact, load piston 5 downward movement compresses reset spring 15, when load piston 5 goes up decurrent effort and disappears, reset spring 15 resumes former length, will load piston 5 upwards spring up and reset.
The loading support 2 in this application include the support column 16 of both sides, connect the loading crossbeam 17 at two support column 16 middles and set up the supporting shoe 18 on the support column 16 top, the both ends of loading crossbeam 17 in this application are fixed respectively on two support column 16 through the rivet, two support column 16 symmetry sets up in this application to the top fixed connection of supporting shoe 18 and two support column 16 is put through, concrete supporting shoe 18 and support column 16 accessible welded mode is fixed, supporting shoe 18 on open and to have the piston through-hole (not shown) that runs through it from top to bottom, loading piston 5 set up in the piston through-hole and can reciprocate in the piston through-hole, loading crossbeam 17 level set up in this application and the lower part of loading lever 7 pass through movable hinge rotation with loading crossbeam 17 and be connected. The application is preferably with the bottom of two support columns 16 towards the direction level of keeping away from each other bending into horizontal installation department, open at the installation department has the fixed through-hole (not shown in the figure) about running through the installation department, open on workstation 1 have with fixed hole corresponding screw hole (not shown in the figure), this application is through with screw hole heart and fixed through-hole screw-threaded complex stud with support column 16 detachable installation on the workstation. When loading lever 7 receives decurrent force in this application, its lower part rotates with loading crossbeam 17 relatively, and the upper portion of the clamp splice 8 of loading lever 7 bottom is close to each other, and the lower part of clamp splice 8 is kept away from each other for two clamp splice 8 bottoms form the opening of falling the V font, and when two clamp splice 8 clamp test axle 9, every clamp splice 8 all cuts into line contact with test axle surface mutually.
The parts of the two support columns 16, which are rotationally connected with the loading cross beam 17, are preferably bent towards the directions away from each other, so that the space between the two support columns 16 is increased.
The specific structure for realizing the sliding between the first movable frame 3 and the second movable frame 4 and the workbench 1 is as follows: the upper surface of the workbench 1 is detachably provided with a guide rail 19 with a V-shaped longitudinal section along the direction perpendicular to the loading bracket 2 through a plurality of nuts, the bottoms of the first movable frame 3 and the second movable frame 4 are respectively provided with a first guide groove (not shown in the figure) and a second guide groove (not shown in the figure) which are matched with the guide rail 19, and the guide rail 19 passes through the first guide groove and the second guide groove to position and guide the first movable frame 3 and the second movable frame 4.
In order to fix the first movable frame 3 and the second movable frame 4 in the working state, a first fastening device 20 for fixing the first movable frame 3 on the guide rail 19 is arranged at the bottom of the first movable frame 3, and a second fastening device 21 for fixing the second movable frame 4 on the guide rail 19 is arranged at the bottom of the second movable frame 4. The first fastening device 20 in the present application comprises a first threaded through hole (not shown in the figure) formed in the bottom of the first movable frame 3 and a first bolt (not shown in the figure), wherein the first bolt is in threaded engagement with the first threaded through hole, the end of the first bolt can be in contact with the guide rail 19, and when the end of the first bolt is in contact with the guide rail 19 and presses the guide rail 19, the first movable frame 3 is fixed on the guide rail 19. The structure of the second fastening device 21 is the same as that of the first fastening device 20, and the use manner is the same, which is not repeated herein.
Embodiment two:
the method for measuring seizure resistance property of a test shaft by using the test device according to the first embodiment includes the following steps:
step 1, moving a first movable frame 3 towards a direction away from a second movable frame 4, installing one end of a test shaft 9 to be tested in an installation hole 13 on a transmission shaft 12, keeping the test shaft 9 pass through between two clamping blocks 8, moving the first movable frame 3, enabling a center 11 to prop against the end part of one end of the test shaft 9 away from the second movable frame 4, and pasting a pressure sensor on the surface of the test shaft 9;
step 2, preloading is carried out on the loading piston 5, the loading piston is moved downwards, and after the clamping block 8 can stably clamp the test shaft 9, the preloaded loading is removed.
Step 2.1, manually rotating the transmission shaft 12, and measuring the runout of the test shaft 9 rotating for one circle by adopting a dial indicator, wherein the runout error is kept to be not more than 0.002 mm, wherein the step is the conventional use of the dial indicator, and the specific measuring method is not described in detail in the application.
Step 3, starting the motor connected with the transmission shaft 12, and keeping the rotating speed of the motor to be 300 revolutions per minute.
Step 4, gradually adding weights on the supporting platform 14, reading the load on the test shaft 9 through the pressure sensor, and when the load on the test shaft 9 is added to f1=1000 newtons, making the test shaft 9 run for a period of time t1=30 minutes, namely, continuously operating the motor for 30 minutes without adding weights in the state.
And 5, after the running-in period of the step 4 is completed, adding weights step by step, keeping the test shaft 9 to run for a period of time DeltaF=250 newtons (namely, the motor works for 1 minute) until the load is increased to FN=7500 newtons, entering a stable running-in period, and considering that the seizure resistance performance is unqualified if the seizure, the locking or the positioning pin 24 is sheared off during the period, and stopping the test.
In step 6, when no engagement, locking or shearing of the positioning pin 24 occurs in step 5 and the stable running-in period is entered, the locking load is fn=7500 newton and the running-in period is tn=30 minutes, for example, no engagement, locking or shearing of the positioning pin 24 occurs after running-in for 30 minutes, which is regarded as qualified anti-engagement performance.
After the completion of steps 1 to 6, the test shaft 9 can be replaced, and steps 1 to 6 are repeated to measure the seizure resistance property of the other test shaft 9.
Embodiment III:
the technical scheme of the embodiment is that the method for measuring the extreme seizure resistance property of the test shaft is implemented by adopting the test device capable of measuring the seizure resistance property of the shaft parts disclosed in the first embodiment, and the method specifically comprises the following steps:
step 1, moving the first movable frame 3 towards a direction away from the second movable frame 4, installing one end of a test shaft 9 to be tested in an installation hole 13 on a transmission shaft 12, keeping the test shaft 9 to pass through between two clamping blocks 8, moving the first movable frame 3, enabling a center 11 to prop against the end part of one end of the test shaft 9 away from the second movable frame 4, and pasting a pressure sensor on the surface of the test shaft 9.
Step 2, preloading is carried out on the loading piston 5, the loading piston is moved downwards, and after the clamping block 8 can stably clamp the test shaft 9, the preloaded loading is removed.
Step 2.1, manually rotating the transmission shaft 12, and measuring the runout of the test shaft 9 rotating for one circle by adopting a dial indicator, wherein the runout error is kept to be not more than 0.002 mm, wherein the step is the conventional use of the dial indicator, and the specific measuring method is not described in detail in the application.
Step 3, starting the motor connected with the transmission shaft 12, and keeping the rotating speed of the motor to be 300 revolutions per minute.
Step 4, gradually adding weights on the supporting platform 14, reading the load on the test shaft 9 through the pressure sensor, and when the load on the test shaft 9 is added to f1=1000 newtons, making the test shaft 9 run for a period of time t1=30 minutes, namely, continuously operating the motor for 30 minutes without adding weights in the state.
And 5, after the running-in period of the step 4 is completed, adding weights step by step, keeping the test shaft 9 to run for a period of time DeltaF=250 newtons (namely, the motor works for 1 minute) until the load is increased to FN=7500 newtons, entering a stable running-in period, and stopping the test if the seizure, locking or shearing phenomenon of the positioning pin 24 occurs during the running-in period, and the seizure resistance is considered to be unqualified.
In step 6, when no engagement, locking or shearing of the positioning pin 24 occurs in step 5 and the stable running-in period is entered, the locking load is fn=7500 newton and the running-in period is tn=30 minutes, for example, no engagement, locking or shearing of the positioning pin 24 occurs after running-in for 30 minutes, which is regarded as qualified anti-engagement performance.
And 7, after running in for a stable running-in period keeping time TN=30 minutes, continuously increasing the load until the phenomenon of occlusion and locking occurs, and recording the weight of the weight added on the supporting platform 14 at the moment, namely the ultimate anti-occlusion performance of the test shaft 9.
Parts of the above description not specifically described are either prior art or may be implemented by prior art. Moreover, the embodiments of the present invention are described in the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Equivalent changes and modifications of the invention are intended to be within the scope of the present invention.
Claims (8)
1. Can survey test device of axle type part seizure resistance ability, its characterized in that: the device comprises a workbench (1), a loading bracket (2) arranged on the workbench (1), a first movable rack (3) and a second movable rack (4) which are arranged on the workbench (1) and form a horizontal moving pair with the workbench (1), and a loading piston (5) which is arranged on the loading bracket (2) and forms a vertical moving pair with the loading bracket (2); the two sides of the lower part of the loading piston (5) are symmetrically provided with a connecting rod (6) in a rotating way, one end of the connecting rod (6) far away from the loading piston (5) is provided with a loading lever (7) in a rotating way, the lower part of the loading lever (7) is rotationally connected with the loading bracket (2), the bottom end of the loading lever (7) is respectively provided with a clamping block (8) in a rotating way, and the opposite surfaces of the clamping blocks (8) are provided with V-shaped grooves (10) which can be matched with a test shaft (9); the device is characterized in that a center (11) is rotatably arranged on the first movable rack (3), a transmission shaft (12) is rotatably arranged on the second movable rack (4), the center (11) and the transmission shaft (12) are positioned on the same horizontal line, one end, close to the center (11), of the transmission shaft (12) is provided with a mounting hole (13) for mounting a test shaft (9), and the other end of the transmission shaft (12) is used for being connected with a driving device for driving the rotation of the transmission shaft; the loading piston (5) upwards penetrates through the loading support (2), a supporting platform (14) for placing a counterweight is arranged at the top of the loading piston (5), a return spring (15) is sleeved on the loading piston (5), the top end of the return spring (15) is contacted with the supporting platform (14), and the bottom end of the return spring (15) is contacted with the top end of the loading support (2); the upper surface of workstation (1) be provided with guide rail (19), the bottom of first movable frame (3) and second movable frame (4) open respectively have first guide slot and the second guide slot with guide rail (19) matched with.
2. The test device for measuring seizure resistance property of shaft parts according to claim 1, wherein: the loading support (2) comprises support columns (16) on two sides, a loading cross beam (17) connected with the two support columns (16) and a support block (18) arranged at the top end of the support columns (16), a piston through hole penetrating through the support block (18) is formed in the support block, a loading piston (5) is arranged in the piston through hole and can move up and down in the piston through hole, and the lower part of the loading lever (7) is rotationally connected with the loading cross beam (17).
3. The test device for measuring seizure resistance property of shaft parts according to claim 2, wherein: the parts of the two support columns (16) which are rotationally connected with the loading cross beam (17) are bent towards the directions away from each other.
4. The test device for measuring seizure resistance property of shaft parts according to claim 1, wherein: the bottom of the first movable frame (3) is provided with a first fastening device (20) for fixing the first movable frame on the guide rail (19), and the bottom of the second movable frame (4) is provided with a second fastening device (21) for fixing the second movable frame on the guide rail (19).
5. A method for measuring seizure resistance property of a test shaft by using the test device according to any one of claims 1 to 4, characterized by comprising: the method comprises the following steps that step 1, a first movable frame (3) is moved towards a direction away from a second movable frame (4), one end of a test shaft (9) to be tested is installed in an installation hole (13) on a transmission shaft (12), the test shaft (9) is kept to pass through a space between two clamping blocks (8), the first movable frame (3) is moved, a center (11) is made to prop against the end part of one end of the test shaft (9) away from the second movable frame (4), and a pressure sensor is stuck on the surface of the test shaft (9);
step 2, preloading on a loading piston (5) to enable the loading piston to move downwards, and removing the preloaded loading after a clamping block (8) can stably clamp a test shaft (9); step 3, starting a driving device connected with the transmission shaft (12);
step 4, gradually adding weights on the supporting platform (14), reading the load on the test shaft (9) through a pressure sensor, and enabling the test shaft (9) to run for a period of time T1 when the load on the test shaft (9) is added to be F1;
step 5, after the running-in period of the step 4 is completed, weights are added step by step, and each time deltaF is added, the test shaft (9) is kept to run for a time deltaT until the load is increased to FN, and the running-in period is stabilized, and if the phenomenon of occlusion and locking occurs, the running-in period is regarded as unqualified anti-occlusion performance;
and 6, after entering a stable running-in period, locking the running-in with the load of FN and keeping the duration of TN, and if the phenomenon of occlusion and locking still does not occur, judging that the anti-occlusion performance is qualified.
6. The method according to claim 5, wherein: the method further comprises the step 2.1 of manually rotating the transmission shaft (12), and measuring the runout error of the test shaft (9) rotating for one circle by adopting a dial indicator to be not more than 0.002 millimeter.
7. The method according to claim 6, wherein: and (3) replacing the test shaft (9), repeating the steps 1 to 6, and measuring the seizure resistance property of the other test shaft (9).
8. A method for determining extreme seizure resistance property of a test shaft, characterized by: step 7 is additionally arranged on the basis of any one of claims 5 to 7, after running-in of the stable running-in period keeping time TN, the load is continuously increased until the phenomenon of occlusion and locking occurs, and the weight of the weight added on the supporting platform (14) at the moment is recorded, so that the ultimate seizure resistance performance of the test shaft (9) is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342685.6A CN108776018B (en) | 2018-04-17 | 2018-04-17 | Test device capable of measuring seizure resistance property of shaft parts and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342685.6A CN108776018B (en) | 2018-04-17 | 2018-04-17 | Test device capable of measuring seizure resistance property of shaft parts and application thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN108776018A CN108776018A (en) | 2018-11-09 |
| CN108776018B true CN108776018B (en) | 2023-07-18 |
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| CN201810342685.6A Active CN108776018B (en) | 2018-04-17 | 2018-04-17 | Test device capable of measuring seizure resistance property of shaft parts and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201497672U (en) * | 2009-07-14 | 2010-06-02 | 中国矿业大学 | Steel wire micro-motion fatigue tester |
| CN103411767B (en) * | 2013-08-18 | 2015-07-22 | 吉林大学 | Mechanical connecting fastener reliability test bed with bi-directional loading simulation function |
| CN203509686U (en) * | 2013-09-30 | 2014-04-02 | 南京彩云机械电子制造有限公司 | Clamping support of long and thin workpieces precisely turn-milled |
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| CN106525616B (en) * | 2016-11-23 | 2023-10-03 | 北京科技大学 | Large-torque torsion fatigue test device for shaft parts |
| CN107132183B (en) * | 2017-06-13 | 2023-09-01 | 中国石油大学(北京) | Horizontal magnetic shielding reciprocating type friction and wear testing machine |
| CN208125381U (en) * | 2018-04-17 | 2018-11-20 | 南京工业职业技术学院 | The experimental rig of axial workpiece anti-seizing property can be measured |
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| WO2007006210A1 (en) * | 2005-07-09 | 2007-01-18 | Yanshan University | Rolling contact fatigue tester for inspecting the simulated working condition |
| CN102798527A (en) * | 2012-07-27 | 2012-11-28 | 河南科技大学 | Tester for detecting performance of oil-retaining bearing and radial loading mechanism thereof |
| CN106769579A (en) * | 2016-12-13 | 2017-05-31 | 李霞林 | A kind of small friction abrasion tester |
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