CN110595769B - Reliability test system for coupler - Google Patents
Reliability test system for coupler Download PDFInfo
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- CN110595769B CN110595769B CN201910889672.5A CN201910889672A CN110595769B CN 110595769 B CN110595769 B CN 110595769B CN 201910889672 A CN201910889672 A CN 201910889672A CN 110595769 B CN110595769 B CN 110595769B
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- 238000012360 testing method Methods 0.000 title claims abstract description 55
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000013519 translation Methods 0.000 claims abstract description 43
- 229910052742 iron Inorganic materials 0.000 claims abstract description 39
- 230000008878 coupling Effects 0.000 claims description 53
- 238000010168 coupling process Methods 0.000 claims description 53
- 238000005859 coupling reaction Methods 0.000 claims description 53
- 238000006073 displacement reaction Methods 0.000 claims description 33
- 239000000919 ceramic Substances 0.000 claims description 14
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 description 11
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000009966 trimming Methods 0.000 description 1
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/022—Power-transmitting couplings or clutches
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
- G01M13/026—Test-benches of the mechanical closed-loop type, i.e. having a gear system constituting a closed-loop in combination with the object under test
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Abstract
The invention belongs to the technical field of a reliability test of a coupler, and particularly relates to a reliability test system of a coupler, which can simulate the loading of an actual working condition, and overcomes the problem that the existing reliability test device cannot perform the reliability test on the coupler, wherein the reliability test system comprises a ground flat iron, a torque loading device, a control console and a bias loading device; the torque loading device comprises a dynamometer, a No. 1 rotating shaft, a No. 2 rotating shaft and a motor; two ends of the No. 2 rotating shaft are respectively connected with a shaft of the motor and a right connecting flap of the tested coupler; two ends of the No. 1 rotating shaft are respectively connected with a left connecting lobe of the tested coupler and a shaft of the dynamometer; the bias loading device comprises a deflection loading unit, a No. 1 translation loading unit and a No. 2 translation loading unit; the No. 1 translation loading unit is arranged on a ground flat iron at the right end of the front side of the deflection loading unit; and the No. 2 translation loading unit is arranged on a ground flat iron at the left end of the front side of the deflection loading unit.
Description
Technical Field
The invention belongs to the technical field of a coupler reliability test, and particularly relates to a coupler reliability test system capable of simulating loading of an actual working condition.
Background
The coupling is a device for connecting two shafts or a shaft and a rotating part, rotating together in the process of transmitting motion and power and not separating under normal conditions, and generally comprises a left connecting flap and a right connecting flap. Due to manufacturing and installation errors and the like, the left coupling lobe and the right coupling lobe of the coupling are usually subjected to relative offset (such as radial offset, angular offset or comprehensive offset), namely, a coaxiality error is generated, and the damage ring of the left coupling lobe or the right coupling lobe of the coupling is aggravated. Particularly, when the machine runs at high speed, larger centrifugal force is generated, and the damage effect on mechanical parts is more obvious. At present, technicians research the reliability of the coupling through theoretical analysis, an assembly process, finite elements and other multi-angles. Coupling reliability levels are typically obtained through customer field reliability testing. However, a reliability test device dedicated to testing the reliability level of the coupling is almost blank in China. The invention provides a coupling reliability test system capable of simulating loading under actual working conditions according to the actual working conditions of a coupling.
Disclosure of Invention
The invention aims to solve the technical problem that the reliability test device cannot simulate the loading of the actual working condition of the coupler at present, and provides a coupler reliability test system capable of simulating the loading of the actual working condition.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme, which is described by combining the accompanying drawings as follows:
a reliability test system of a coupling comprises a ground flat iron 1, a torque loading device and a bias loading device;
the torque loading device is arranged on the upper surface of the ground flat iron 1; the bias loading device is arranged on the upper surface of the ground flat iron 1;
the torque loading device comprises a dynamometer 3, a No. 1 rotating shaft 4, a No. 2 rotating shaft 8 and a motor 10;
the right end of the No. 2 rotating shaft 8 is connected with a motor shaft of the motor 10 through a key, and the left end of the No. 2 rotating shaft 8 is connected with a right connecting lobe of the tested coupler 7 through a key; the right end of the No. 1 rotating shaft 4 is connected with the left connecting flap of the tested coupler 7 through a key; the left end of the No. 1 rotating shaft 4 is connected with a shaft of the dynamometer 3 through a key or a coupler;
the bias loading device comprises a deflection loading unit, a No. 1 translation loading unit and a No. 2 translation loading unit; the No. 1 translation loading unit is arranged on a ground iron 1 at the right end of the front side of the deflection loading unit; the No. 2 translation loading unit is installed on a ground flat iron 1 at the left end of the front side of the deflection loading unit.
The torque loading device in the technical scheme further comprises a dynamometer support 2, a base plate 5, a No. 1 supporting unit 6, a No. 2 supporting unit 9, a motor support 11 and a laser rotating speed sensor 16;
the No. 2 supporting unit 9 comprises a right angular contact ball bearing 17, a sleeve 18, a right end cover 19, a locking nut 20, an outer ring sleeve 30, a left angular contact ball bearing 31, a left end cover 32 and a No. 2 bracket 36;
the motor 10 is fixed on the upper surface of the motor support 11; the motor support 11 is fixed on the upper surface of the angle fine adjustment plate 12 through bolts; the No. 2 bracket 36 is fixed on the angle fine adjustment plate 12 through bolts; the right end cover 19 is fixed on the right end face of the No. 2 bracket 36 through a bolt; the right end face of the outer ring of the right angular contact ball bearing 17 is in contact with the left end face of a right end cover 19; the left end surface and the right end surface of the outer ring sleeve 30 are respectively contacted with the right end surface of the outer ring of the left angular contact ball bearing 31 and the left end surface of the outer ring of the right angular contact ball bearing 17; the right angular contact ball bearing 17 and the left angular contact ball bearing 31 are mounted in a back-to-back manner; the left end cover 32 is fixed on the left end surface of the No. 2 bracket 36 through a bolt; the left end surface of the inner ring of the left angular contact ball bearing 31 is in contact with the right end surface of the shoulder of the No. 2 rotating shaft 8; the left end surface of the sleeve 18 is in contact with the right end surface of the inner ring of the right angular contact ball bearing 17; the right end face of the sleeve 18 is in contact with the left end face of the lock nut 20;
the structure of the No. 1 supporting unit 6 is completely the same as that of the No. 2 supporting unit 9;
the structure of the No. 1 rotating shaft 4 is completely the same as that of the No. 2 rotating shaft 8;
the dynamometer 3 is fixed on the upper surface of the dynamometer support 2 through a bolt;
the dynamometer support 2 is fixed on the ground flat iron 1 through bolts; the backing plate 5 is positioned between the dynamometer support 2 and the ground iron 1; the laser rotating speed sensor 16 is fixedly mounted on the ground flat iron 1 through bolts.
In the technical scheme, the dynamometer 3, the laser rotation speed sensor 16 and the motor 10 are respectively connected with a control console 39 through electric wires.
In the technical scheme, the deflection loading unit comprises an angle fine adjustment plate 12, two left nuts 21, a transverse adjustment plate 23, a left stud bolt 25, a right stud bolt 26, two right nuts 27, a fixing nut 28, a No. 1 spherical hinge 13 and a No. 2 spherical hinge 40;
four top corners of the transverse adjusting plate 23 are respectively provided with a long hole for passing through a fixing nut 28 to connect the transverse adjusting plate 23 to the ground flat iron 1; two ends of the symmetrical center line of the transverse adjusting plate 23 are respectively provided with a threaded hole for respectively screwing the left stud bolt 25 and the right stud bolt 26;
one end of the angle fine adjustment plate 12 is provided with a through hole 1201 which is sleeved on the middle optical axis part of the left stud bolt 25, and the two are in clearance fit; the other end of the angle fine adjustment plate 12 is provided with a long arc hole 1202 which takes the through hole 1201 as a circle center and is used for being sleeved on the middle optical axis part of the right stud bolt 26, and the two are in clearance fit; the angle fine adjustment plate 12 is provided with a threaded hole for screwing a bolt to fix the motor support 11 on the upper surface of the angle fine adjustment plate 12; two left nuts 21 are screwed on the upper thread section of the left stud bolt 25; two right nuts 27 are screwed on the upper thread sections of the right stud bolts 26;
the inner shaft of the No. 1 spherical hinge 13 is fixed on the upper surface of the right end of the front side of the angle fine adjustment plate 12 through threads; the axial lead of the inner shaft of the No. 1 spherical hinge 13 is vertical to the upper surface of the angle fine adjustment plate 12;
the inner shaft of the No. 2 spherical hinge 40 is fixed on the upper surface of the left end of the front side of the transverse adjusting plate 23 through threads; the axial line of the inner shaft of the No. 2 ball joint 40 is perpendicular to the upper surface of the transverse adjusting plate 23.
In the technical scheme, the No. 1 translation loading unit comprises a No. 1 pull pressure sensor 14, an angle fine adjustment handle 15, a fixing plate 22, an adjustment loading rod 24, a piezoelectric ceramic actuator 29, a displacement sensor 33, a nut 34, an adjustment rod 35, a rotating frame 37 and a No. 1 nut 38;
through holes for penetrating bolts to fix the fixing plate 22 on the ground flat iron 1 are formed in two sides of the fixing plate 22; a stepped hole is formed in the middle of the fixed plate 22 and is used for penetrating through a circular shaft section at the lower end of the rotating frame 37; the No. 1 nut 38 is screwed in a threaded section at the lower end of the rotating frame 37; the distance from the end head of the lower end of the rotating frame 37 to the lower surface of the fixed plate 22 is at least 0.5 mm; the upper half part of the rotating frame 37 is of a vertical flat plate structure; a threaded hole for screwing in the threaded section of the adjusting rod 35 is formed in the middle of the vertical flat plate of the rotating frame 37, and the central line of the threaded hole is vertical to and penetrates through the axial line of the round shaft section at the lower end of the rotating frame 37; the nut 34 is installed on the adjusting rod 35 and is positioned on the right side of the vertical flat plate of the rotating frame 37; the right end of the adjusting rod 35 is provided with an angle fine adjustment handle 15; the left end of the adjusting rod 35 is fixedly connected with the right end of the piezoelectric ceramic actuator 29 through threads; the left end of the piezoelectric ceramic actuator 29 is in threaded connection with the right end of the No. 1 pull pressure sensor 14; the left end of the No. 1 pull pressure sensor 14 is in threaded connection with the right end of the adjusting loading rod 24; the left end of the adjusting loading rod 24 is in threaded connection with the No. 1 spherical hinge 13;
the No. 2 translation loading unit and the No. 1 translation loading unit have the same structure; the left end of the adjusting loading rod 24 of the No. 2 translation loading unit is in threaded connection with the No. 2 spherical hinge 40; the displacement sensor 33 of the No. 1 translation loading unit is fixedly arranged on the upper surface of the fixing plate 22 of the No. 1 translation loading unit; and the displacement sensor 33 of the No. 2 translation loading unit is fixedly arranged on the upper surface of the fixing plate 22 of the No. 2 translation loading unit.
In the technical scheme, the piezoelectric ceramic actuator 29, the displacement sensor 33 and the No. 1 pulling pressure sensor 14 are respectively connected with a control console 39 through electric wires.
Compared with the prior art, the invention has the beneficial effects that:
1. the coupling reliability test system provided by the invention adopts the dynamometer to carry out static and dynamic torque loading on the coupling. Meanwhile, a torque sensor and a rotating speed sensor are arranged in the dynamometer to detect the torque and the rotating speed of the coupler in real time, and the closed-loop control of torque loading is realized.
2. The system for testing the reliability of the coupling adopts the offset loading device to realize the loading of the coupling when two half parts of the coupling are not coaxial or eccentric, so as to simulate the actual working condition that two shafts connected with the coupling have different shafts. The problem that the existing coupler reliability test bed cannot carry out non-coaxial loading on the coupler is solved.
3. The coupling reliability test system provided by the invention has a wide application range, can test couplings of different types, can perform reliability tests on various couplings under different working conditions by only replacing rotating shafts with different diameters and lengths, and embodies the flexibility and the universality of the test system. The data recording provides practical and real basic fault data for later reliability modeling, reliability increasing, reliability improving design and reliability prediction, and greatly shortens data acquisition time.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of an axonometric projection of a coupling reliability testing system according to the present invention;
FIG. 2 is a partial cross-sectional view of a support unit number 2 of a coupling reliability testing system according to the present invention;
FIG. 3 is an enlarged, fragmentary view of the right end portion of FIG. 1 of a coupling reliability testing system in accordance with the present invention;
FIG. 4 is a schematic view of an offset loading apparatus of a coupling reliability testing system according to the present invention;
FIG. 5 is a schematic view of an angle trimming plate of a coupling reliability testing system according to the present invention;
FIG. 6 is a schematic view of a lateral adjustment plate of a coupling reliability testing system according to the present invention;
FIG. 7 is a cross-sectional view A-A of FIG. 4 of a coupling reliability testing system in accordance with the present invention;
FIG. 8 is an assembly schematic diagram of a rotating frame and a No. 1 nut of the coupling reliability testing system according to the invention;
in the figure: 1. the device comprises a ground flat iron, 2, a dynamometer support, 3, a dynamometer, 4.1 a rotating shaft, 5 a backing plate, 6.1 a supporting unit, 7 a measured coupler, 8.2 a rotating shaft, 9.2 a supporting unit, 10 a motor, 11 a motor support, 12 an angle fine adjustment plate, 13.1 a ball hinge, 14.1 a pull pressure sensor, 15 an angle fine adjustment handle, 16 a laser rotating speed sensor, 17 a right angular contact ball bearing, 18 a sleeve, 19 a right end cover, 20 a locking nut, 21 a left nut, 22 a fixing plate, 23 a transverse adjusting plate, 24 an adjusting loading rod, 25 a left stud, 26 a right stud, 27 a right nut, 28 a fixing nut, 29 a piezoelectric ceramic actuator, 30 an outer ring sleeve, 31 a left angular contact ball bearing, 32 a left end cover, 33 a displacement sensor, 34 a nut, 35 an adjusting rod, 36.2 a support, 37 a rotating frame and 38.1 a nut, 39. console, 40.2 spherical hinge.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
it should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention:
the invention provides a coupling reliability test system which adopts a dynamometer to load torque on a coupling, adopts a bias loading device to load the left coupling flap and the right coupling flap of the coupling when the left coupling flap and the right coupling flap are not coaxial or eccentric, adopts a pull pressure sensor and a displacement sensor to collect feedback data and carries out reliability test on the coupling according to the actual use condition of the coupling.
Referring to fig. 1, the coupling reliability testing system of the present invention includes a ground level iron 1, a torque loading device, an offset loading device and a console 39.
The torque loading device is arranged on the upper surface of the ground flat iron 1; the bias loading device is arranged on the upper surface of the ground flat iron 1.
First, torsion loading device
Referring to fig. 1, 2 and 3, the torque loading device includes a dynamometer support 2, a dynamometer 3, a spindle 1, a backing plate 5, a supporting unit 1, a spindle 2, a supporting unit 9, a motor 10, a motor support 11 and a laser rotation speed sensor 16.
Referring to fig. 1 and 2, the support unit No. 29 includes a right angular contact ball bearing 17, a sleeve 18, a right end cover 19, a lock nut 20, an outer ring sleeve 30, a left angular contact ball bearing 31, a left end cover 32, and a support No. 2 36.
Referring to fig. 1, 2 and 3, the motor 10 is fixed on the upper surface of the motor support 11. The motor support 11 is fixed to the upper surface of the angle fine adjustment plate 12 by bolts. The No. 2 bracket 36 is fixed on the angle fine adjustment plate 12 by bolts. The right end cover 19 is fixed on the right end surface of the No. 2 bracket 36 through bolts. The right end face of the outer ring of the right angular contact ball bearing 17 is in contact with the left end face of a right end cover 19; the left end surface and the right end surface of the outer ring sleeve 30 are respectively contacted with the right end surface of the outer ring of the left angular contact ball bearing 31 and the left end surface of the outer ring of the right angular contact ball bearing 17; the right angular contact ball bearing 17 and the left angular contact ball bearing 31 are mounted in a back-to-back manner. The left end cover 32 is fixed on the left end face of the No. 2 bracket 36 through bolts. The left end surface of the inner ring of the left angular contact ball bearing 31 is in contact with the right end surface of the shoulder of the No. 2 rotating shaft 8; the left end surface of the sleeve 18 is in contact with the right end surface of the inner ring of the right angular contact ball bearing 17; the right end face of the sleeve 18 is in contact with the left end face of the lock nut 20. During installation, the pretightening force of the right angular contact ball bearing 17 and the left angular contact ball bearing 31 is adjusted by adjusting the position of the locking nut 20. The right end of the No. 2 rotating shaft 8 is connected with a motor shaft of the motor 10 through a key, and the axis of the No. 2 rotating shaft 8 is coaxial with the motor shaft of the motor 10. The left end of the No. 2 rotating shaft 8 is connected with the right connecting valve of the tested coupler 7 through a key.
Referring to fig. 1, 2 and 3, the structure of the supporting unit No. 16 is completely the same as that of the supporting unit No. 29. The structure of the No. 1 rotating shaft 4 is completely the same as that of the No. 2 rotating shaft 8. The right end of the No. 1 rotating shaft 4 is connected with the left connecting flap of the tested coupler 7 through a key, and the axis of the No. 1 rotating shaft 4 is coaxial with the axis of the No. 2 rotating shaft 8 during initial installation; the left end of the No. 1 rotating shaft 4 is connected with a shaft of the dynamometer 3 through a key or a coupler, and the axis of the No. 1 rotating shaft 4 is coaxial with the axis of the shaft of the dynamometer 3. The dynamometer 3 is fixed on the upper surface of the dynamometer support 2 through bolts. The dynamometer 3 loads static and dynamic torques of the coupler 7 to be tested; a torque sensor and a rotating speed sensor are arranged in the dynamometer 3 and used for detecting the torque and the rotating speed of the coupler 7 to be measured, and closed-loop control is achieved.
Referring to fig. 1, 2 and 3, the dynamometer support 2 is fixed on the ground flat iron 1 through bolts. The backing plate 5 is positioned between the dynamometer support 2 and the ground iron 1. The height of the dynamometer 3 is adjusted by changing the height of the tie plate 5.
Referring to fig. 1, 2 and 3, the laser rotation speed sensor 16 is fixedly mounted on the ground flat iron 1 through bolts and is used for detecting the rotation speed of the number 1 rotating shaft 4.
The dynamometer 3, the laser rotation speed sensor 16 and the motor 10 are respectively connected with the console 39 through electric wires.
Second, bias loading device
Referring to fig. 1, 3, 4, 5, 6 and 7, the bias loading device includes a deflection loading unit, a No. 1 translation loading unit and a No. 2 translation loading unit.
Referring to fig. 3, the No. 1 translational loading unit is mounted on a ground iron 1 at the right end of the front side of the deflection loading unit. The No. 2 translation loading unit is installed on a ground flat iron 1 at the left end of the front side of the deflection loading unit.
Referring to fig. 1, 3, 4, 5, 6 and 7, the yaw loading unit includes an angle fine adjustment plate 12, two left nuts 21, a lateral adjustment plate 23, a left stud bolt 25, a right stud bolt 26, two right nuts 27, a fixing nut 28, a spherical hinge No. 1 13, and a spherical hinge No. 2 40.
Referring to fig. 1, 3, 4, 5, 6 and 7, the four corners of the transverse adjusting plate 23 are respectively provided with a long hole for passing through a fixing nut 28 to couple the transverse adjusting plate 23 to the ground flat iron 1; two ends of the symmetrical center line of the transverse adjusting plate 23 are respectively provided with a threaded hole for screwing in a left stud bolt 25 and a right stud bolt 26 respectively.
Referring to fig. 5, 6 and 7, one end of the angle fine adjustment plate 12 is provided with a through hole 1201 for being sleeved on the middle optical axis part of the left stud bolt 25, and the two are in clearance fit; the other end of the angle fine adjustment plate 12 is provided with a long arc hole 1202 which takes the through hole 1201 as a circle center and is used for being sleeved on the middle optical axis part of the right stud bolt 26, and the two are in clearance fit. The right side edge of the angle fine adjustment plate 12 is provided with a rectangular notch. The angle fine adjustment plate 12 is provided with a threaded hole for screwing in a bolt to fix the motor support 11 on the upper surface of the angle fine adjustment plate 12. Two of the left nuts 21 are threaded onto the upper threaded section of the left stud bolt 25. Two right nuts 27 are screwed on the upper thread section of the right stud 26.
Referring to fig. 3 and 4, the inner shaft of the number 1 ball hinge 13 is fixed to the upper surface of the right front end of the angle fine adjustment plate 12 by a screw. The axis of the inner shaft of the No. 1 spherical hinge 13 is perpendicular to the upper surface of the angle fine adjustment plate 12.
Referring to fig. 3 and 4, the inner shaft of the No. 2 ball hinge 40 is fixed to the upper surface of the front left end of the lateral adjustment plate 23 by a screw. The axle center of the inner shaft of the No. 2 ball joint 40 is perpendicular to the upper surface of the transverse adjusting plate 23.
Referring to fig. 3, 4 and 8, the No. 1 translational loading unit includes a No. 1 tension and pressure sensor 14, an angle fine adjustment handle 15, a fixing plate 22, an adjustment loading rod 24, a piezoelectric ceramic actuator 29, a displacement sensor 33, a nut 34, an adjustment rod 35, a rotating frame 37 and a No. 1 nut 38.
Referring to fig. 3, 4 and 8, through holes are formed in both sides of the fixing plate 22 for passing through bolts to fix the fixing plate 22 on the ground plane 1. A stepped hole is formed in the middle of the fixing plate 22 and used for penetrating through a circular shaft section at the lower end of the rotating frame 37, and the two are in clearance fit, namely, the rotating frame 37 can freely rotate in the stepped hole in the middle of the fixing plate 22. The No. 1 nut 38 is screwed to a threaded section of the lower end of the turret 37 for positioning the axial position of the turret 37. The lower end of the rotating frame 37 is at least 0.5mm from the lower surface of the fixed plate 22, so that the lower end of the rotating frame 37 is prevented from contacting the surface of the ground iron 1 after installation and the rotating frame 37 cannot rotate freely. The upper half part of the rotating frame 37 is of a vertical flat plate structure. A threaded hole for screwing the threaded section of the adjusting rod 35 is formed in the middle of the vertical flat plate of the rotating frame 37, and the central line of the threaded hole is vertical to and penetrates through the axial line of the round shaft section at the lower end of the rotating frame 37. The nut 34 is installed on the adjusting rod 35 and is located at the right side of the vertical plate of the rotating frame 37, and after the position of the motor 10 is adjusted by the adjusting rod 35, the nut 34 is screwed to fix the adjusting rod 35 on the vertical plate of the rotating frame 37. The right end of the adjusting rod 35 is provided with an angle fine adjustment handle 15. The left end of the adjusting rod 35 is fixedly connected with the right end of the piezoelectric ceramic actuator 29 through threads. The left end of the piezoelectric ceramic actuator 29 is in threaded connection with the right end of the No. 1 pull pressure sensor 14; the left end of the No. 1 pull pressure sensor 14 is in threaded connection with the right end of the adjusting loading rod 24; the left end of the adjusting loading rod 24 is in threaded connection with the No. 1 spherical hinge 13.
The No. 2 translation loading unit and the No. 1 translation loading unit are identical in structure. The left end of the adjusting loading rod 24 of the No. 2 translation loading unit is in threaded connection with the No. 2 spherical hinge 40.
Referring to fig. 1, 3 and 4, the displacement sensor 33 of the No. 1 translational loading unit is fixedly mounted on the upper surface of the fixing plate 22 of the No. 1 translational loading unit;
the displacement sensor 33 of the No. 1 translation loading unit is an infrared displacement sensor, the transmitting device of the displacement sensor 33 of the No. 1 translation loading unit irradiates the front side surface of the angle fine tuning plate 12 by transmitting infrared rays, and the receiving device of the displacement sensor 33 of the No. 1 translation loading unit receives a reflected signal reflected from the front side surface of the angle fine tuning plate 12, so that the displacement of the angle fine tuning plate 12 is obtained. The displacement sensor 33 of the No. 2 translation loading unit is fixedly arranged on the upper surface of the fixing plate 22 of the No. 2 translation loading unit; the displacement sensor 33 of the No. 2 translational loading unit is an infrared displacement sensor, the emitting device of the displacement sensor 33 of the No. 2 translational loading unit emits infrared rays to irradiate the front side surface of the lateral adjustment plate 23, and the receiving device of the displacement sensor 33 of the No. 2 translational loading unit receives a reflected signal reflected from the front side surface of the lateral adjustment plate 23, so that the displacement of the lateral adjustment plate 23 is obtained.
The piezoceramic actuator 29, the displacement sensor 33 and the No. 1 pulling pressure sensor 14 are respectively connected with a control console 39 through electric wires.
The working principle of the coupling reliability test system is as follows:
first, the dynamometer 3 and the No. 1 supporting unit 6 are fixed to the ground plane 1, respectively, and the No. 2 supporting unit 9 and the motor 10 are fixed to the angle fine adjustment plate 12. The torque loading device and the offset loading device are adjusted so that the axis of the dynamometer 3, the axis of the spindle 4 No. 1, the axis of the spindle 8 No. 2 and the axis of the motor shaft of the motor 10 are coaxial. At this time, the two left nuts 21, the two right nuts 27, and the fixing nut 28 are in a loosened state.
When the test is started, loading is carried out under three conditions according to the actual use working condition of the tested coupler 7.
In the first case: the axes of the left connecting lobe and the right connecting lobe of the tested coupler 7 are coaxial, and at the moment, the tested coupler 7 only bears torque loading.
In this case, the test apparatus was further adjusted during the test: after the axial line of the dynamometer 3, the axial line of the No. 1 rotating shaft 4, the axial line of the No. 2 rotating shaft 8 and the axial line of the motor 10 are adjusted to be coaxial, two left nuts 21, two right nuts 27 and a fixing nut 28 are screwed, so that the angle fine adjustment plate 12 and the transverse adjustment plate 23 are simultaneously fixed on the ground flat iron 1, and the relative positions of the axial line of the dynamometer 3, the axial line of the No. 1 rotating shaft 4, the axial line of the No. 2 rotating shaft 8 and the axial line of the motor shaft of the motor 10 are ensured not to change during the test. The motor 10 is started to rotate the coupling 7 to be measured, and the dynamometer 3 loads the torque of the coupling 7 to be measured. The dynamometer 3 can realize static load loading and dynamic load control.
In the second case: the axes of the left connecting lobe and the right connecting lobe of the tested coupler 7 are not coaxial but are parallel to each other. At this time, the measured coupling 7 usually bears not only the torque action but also the yaw moment on the left and right coupling lobes of the measured coupling 7.
In this case, the test apparatus was further adjusted during the test: two left nuts 21 and two right nuts 27 are screwed tightly, so that the angle fine adjustment plate 12 and the transverse adjustment plate 23 are fixed together, and the two angle fine adjustment handles 15 are adjusted to ensure that the axis of the No. 2 rotating shaft 8 generates a certain parallel offset in the horizontal plane relative to the axis of the No. 1 rotating shaft 4, so that the axis of the No. 2 rotating shaft 8 is parallel to the axis of the No. 1 rotating shaft 4, and therefore, the measured coupler 7 is loaded with deflection torque. The value of the yawing moment can be obtained by two tension and pressure sensors 14 No. 1, and simultaneously, two displacement sensors 33 obtain the parallel offset value of the rotating shaft 8 No. 2 relative to the rotating shaft 4 No. 1. At the moment, the load of the deflection torque on the measuring coupler 7 can be divided into static and dynamic working condition loads.
When the measuring coupling 7 is loaded with a static deflection moment, the fixing nut 28 is screwed, so that the angle fine adjustment plate 12 and the transverse adjustment plate 23 are fixed on the ground flat iron 1 together. The motor 10 rotates, and the dynamometer 3 can realize static torque loading and dynamic torque loading.
When the dynamic deflection moment is loaded on the tested coupler 7, the fixing nut 28 is adjusted to enable the distance from the lower surface of the fixing nut 28 to the ground iron 1 to be slightly larger than the thickness of the transverse adjusting plate 23, namely the fixing nut and the ground iron form clearance fit, and the transverse adjusting plate 23 can slide along the ground iron 1 in the horizontal plane. During loading, the two piezoelectric ceramic actuators 29 receive signals of the console 39, and the dynamic deflection torque loading of the tested coupler 7 is realized by adjusting the loading rod 24, the angle fine adjustment plate 12 and the transverse adjustment plate 23. The two No. 1 pull pressure sensors 14 feed back force signals, the two displacement sensors 33 detect the displacement of the angle fine adjustment plate 12, and then the displacement is converted into the moment, the displacement and the angle of the tested coupler 7, and the deflection moment closed-loop loading of the tested coupler 7 is realized. The motor 10 rotates, and the dynamometer 3 can realize static torque loading and dynamic torque loading.
In the third case: the axial line of the left connecting lobe of the tested coupler 7 and the axial line of the right connecting lobe have an offset angle, namely, the left connecting lobe and the right connecting lobe deflect for a certain angle.
In this case, the test apparatus was further adjusted during the test: the fixing nut 28 is tightened so that the lateral adjustment plate 23 is fixed to the ground iron 1. At this time, the deflection loading of the tested coupling 7 is divided into static loading and dynamic loading.
When the tested coupler 7 needs to be statically loaded, the angle fine adjustment handle 15 of the No. 1 translation unit is adjusted, so that the angle fine adjustment plate 12 deflects by a certain angle by taking the left stud bolt 25 as a rotating shaft, even if the axis of the right connecting lobe of the tested coupler 7 deflects by a certain angle relative to the axis of the right connecting lobe of the tested coupler 7. Then, tightening the nut 34 of the No. 1 translation unit prevents the angle fine adjustment handle 15 of the No. 1 translation unit from loosening. And then the two left nuts 21 and the two right nuts 27 of the No. 1 translation unit are screwed, so that the angle fine adjustment plate 12 is fixed on the transverse adjustment plate 23, and further, the static deflection loading of the tested coupler 7 is realized. The motor 10 rotates, and the dynamometer 3 can realize static torque loading and dynamic torque loading.
When the tested coupler 7 needs to be dynamically loaded, the nut 34 of the No. 1 translational loading unit is screwed to enable the angle fine adjustment handle 15 of the No. 1 translational loading unit to be locked on the vertical flat plate of the rotating frame 37; meanwhile, the two left nuts 21 are adjusted so that the distance from the lower surface of the lower left nut 21 to the upper surface of the transverse adjusting plate 23 and the thickness of the transverse adjusting plate 23 are in clearance fit in the vertical direction; the two right nuts 27 are adjusted so that the distance from the lower surface of the right nut 27 located below to the upper surface of the lateral adjustment plate 23 is a clearance fit in the vertical direction with the thickness of the lateral adjustment plate 23. The left nut 21 at the upper side plays a role of locking the left nut 21 at the lower side; the right nut 27 at the upper side plays a role of locking the right nut 27 at the lower side; at this time, the fine angle adjustment plate 12 can rotate freely about the left stud bolt 25. During the test, the motor 10 rotates, and the dynamometer 3 can realize static torque loading and dynamic torque loading. Meanwhile, the piezoelectric ceramic actuator 29 of the No. 1 translational loading unit receives a signal of the console 39, and the dynamic deflection loading of the tested coupler 7 is realized through the adjusting loading rod 24 of the No. 1 translational loading unit. In the process, the No. 1 pull pressure sensor 14 feeds back a force signal, the displacement sensor 33 detects the displacement of the angle fine adjustment plate 12, and then the displacement is converted into the moment, the displacement and the angle of the tested coupler 7, so that the closed-loop control of the deflection moment of the tested coupler 7 is realized.
Before the test, relevant test parameters such as loading force, torque and the like are set on an operation interface of the control console 39 according to a load spectrum of a typical working condition of the coupling, and the test is started. In the test, various sensors in the test bed acquire corresponding signals, timely send the signals to the processor for signal processing, timely feed the signals back to corresponding execution elements to form closed-loop control, and record corresponding test data. After the test, the operating program was shut down and the power was turned off.
The embodiments of the present invention are described in order to facilitate those skilled in the art to understand and apply the present invention, and the present invention is only an optimized embodiment or a preferred embodiment, so the present invention is not limited to the description of the embodiment. If the related technical personnel make equivalent structural changes or various modifications without creative efforts while adhering to the basic technical solution of the present invention, the protection scope of the present invention is covered.
Claims (4)
1. The utility model provides a shaft coupling reliability test system which characterized in that: the device comprises a ground flat iron (1), a torque loading device and a bias loading device;
the torque loading device is arranged on the upper surface of the ground flat iron (1); the bias loading device is arranged on the upper surface of the ground flat iron (1);
the torque loading device comprises a dynamometer (3), a No. 1 rotating shaft (4), a No. 2 rotating shaft (8) and a motor (10);
the right end of the No. 2 rotating shaft (8) is connected with a motor shaft of a motor (10) through a key, and the left end of the No. 2 rotating shaft (8) is connected with a right connecting valve of a tested coupler (7) through a key; the right end of the No. 1 rotating shaft (4) is connected with a left connecting flap of the tested coupler (7) through a key; the left end of the No. 1 rotating shaft (4) is connected with a shaft of the dynamometer (3) through a key or a coupler;
the bias loading device comprises a deflection loading unit, a No. 1 translation loading unit and a No. 2 translation loading unit; the No. 1 translation loading unit is arranged on a horizontal iron (1) at the right end of the front side of the deflection loading unit; the No. 2 translation loading unit is arranged on a ground flat iron (1) at the left end of the front side of the deflection loading unit;
the deflection loading unit comprises an angle fine adjustment plate (12), two left nuts (21), a transverse adjustment plate (23), a left stud bolt (25), a right stud bolt (26), two right nuts (27), a fixing nut (28), a No. 1 spherical hinge (13) and a No. 2 spherical hinge (40);
four top corners of the transverse adjusting plate (23) are respectively provided with a long hole for passing through a fixing nut (28) to connect the transverse adjusting plate (23) to the ground flat iron (1); two ends of the symmetrical center line of the transverse adjusting plate (23) are respectively provided with a threaded hole for respectively screwing a left stud bolt (25) and a right stud bolt (26);
one end of the angle fine adjustment plate (12) is provided with a through hole (1201) used for being sleeved on the middle optical axis part of the left stud bolt (25), and the angle fine adjustment plate and the left stud bolt are in clearance fit; the other end of the angle fine adjustment plate (12) is provided with a long arc hole (1202) taking the through hole (1201) as a circle center and used for being sleeved on the middle optical axis part of the right stud (26), and the two are in clearance fit; the angle fine adjustment plate (12) is provided with a threaded hole for screwing a bolt to fix the motor support (11) on the upper surface of the angle fine adjustment plate (12); the two left nuts (21) are screwed on the upper thread section of the left stud bolt (25); the two right nuts (27) are screwed on the upper thread section of the right stud bolt (26);
an inner shaft of the No. 1 spherical hinge (13) is fixed on the upper surface of the right end of the front side of the angle fine adjustment plate (12) through threads; the axial lead of the inner shaft of the No. 1 spherical hinge (13) is vertical to the upper surface of the angle fine adjustment plate (12);
the inner shaft of the No. 2 spherical hinge (40) is fixed on the upper surface of the left end of the front side of the transverse adjusting plate (23) through threads; the axial lead of the inner shaft of the No. 2 spherical hinge (40) is vertical to the upper surface of the transverse adjusting plate (23);
the No. 1 translation loading unit comprises a No. 1 pull pressure sensor (14), an angle fine-adjustment handle (15), a fixing plate (22), an adjustment loading rod (24), a piezoelectric ceramic actuator (29), a displacement sensor (33), a nut (34), an adjusting rod (35), a rotating frame (37) and a No. 1 nut (38);
through holes for penetrating through bolts to fix the fixing plate (22) on the ground flat iron (1) are formed in two sides of the fixing plate (22); a stepped hole is formed in the middle of the fixing plate (22) and is used for penetrating through a circular shaft section at the lower end of the rotating frame (37); the No. 1 nut (38) is screwed in a threaded section at the lower end part of the rotating frame (37); the distance from the end head of the lower end of the rotating frame (37) to the lower surface of the fixed plate (22) is at least 0.5 mm; the upper half part of the rotating frame (37) is of a vertical flat plate structure; a threaded hole for screwing a threaded section of the adjusting rod (35) is formed in the middle of the vertical flat plate of the rotating frame (37), and the center line of the threaded hole is vertical to and penetrates through the axis line of a round shaft section at the lower end of the rotating frame (37); the nut (34) is arranged on the adjusting rod (35) and is positioned on the right side of the vertical flat plate of the rotating frame (37); the right end of the adjusting rod (35) is provided with an angle fine adjustment handle (15); the left end of the adjusting rod (35) is fixedly connected with the right end of the piezoelectric ceramic actuator (29) through threads; the left end of the piezoelectric ceramic actuator (29) is in threaded connection with the right end of the No. 1 pull pressure sensor (14); the left end of the No. 1 pull pressure sensor (14) is in threaded connection with the right end of the adjusting loading rod (24); the left end of the adjusting loading rod (24) is in threaded connection with a No. 1 spherical hinge (13);
the No. 2 translation loading unit and the No. 1 translation loading unit have the same structure; the left end of an adjusting loading rod (24) of the No. 2 translation loading unit is in threaded connection with a No. 2 spherical hinge (40); the displacement sensor (33) of the No. 1 translation loading unit is fixedly arranged on the upper surface of the fixing plate (22) of the No. 1 translation loading unit; and a displacement sensor (33) of the No. 2 translation loading unit is fixedly arranged on the upper surface of a fixing plate (22) of the No. 2 translation loading unit.
2. A coupling reliability testing system according to claim 1, wherein: the torque loading device further comprises a dynamometer support (2), a base plate (5), a No. 1 supporting unit (6), a No. 2 supporting unit (9), a motor support (11) and a laser rotating speed sensor (16);
the No. 2 supporting unit (9) comprises a right angular contact ball bearing (17), a sleeve (18), a right end cover (19), a locking nut (20), an outer ring sleeve (30), a left angular contact ball bearing (31), a left end cover (32) and a No. 2 support (36);
the motor (10) is fixed on the upper surface of the motor support (11); the motor support (11) is fixed on the upper surface of the angle fine adjustment plate (12) through a bolt; the No. 2 bracket (36) is fixed on the angle fine adjustment plate (12) through a bolt; the right end cover (19) is fixed on the right end face of the No. 2 support (36) through a bolt; the right end surface of the outer ring of the right angular contact ball bearing (17) is in contact with the left end surface of a right end cover (19); the left end surface and the right end surface of the outer ring sleeve (30) are respectively contacted with the right end surface of the outer ring of the left angular contact ball bearing (31) and the left end surface of the outer ring of the right angular contact ball bearing (17); the right angular contact ball bearing (17) and the left angular contact ball bearing (31) are arranged in a back-to-back manner; the left end cover (32) is fixed on the left end face of the No. 2 bracket (36) through a bolt; the left end surface of the inner ring of the left angular contact ball bearing (31) is in contact with the right end surface of the shoulder of the No. 2 rotating shaft (8); the left end surface of the sleeve (18) is in contact with the right end surface of the inner ring of the right angular contact ball bearing (17); the right end face of the sleeve (18) is in contact with the left end face of the locking nut (20);
the structure of the No. 1 supporting unit (6) is completely the same as that of the No. 2 supporting unit (9);
the structure of the No. 1 rotating shaft (4) is completely the same as that of the No. 2 rotating shaft (8);
the dynamometer (3) is fixed on the upper surface of the dynamometer support (2) through a bolt;
the dynamometer support (2) is fixed on the ground flat iron (1) through bolts; the backing plate (5) is positioned between the dynamometer support (2) and the ground iron (1); the laser rotating speed sensor (16) is fixedly arranged on the ground flat iron (1) through bolts.
3. A coupling reliability testing system according to claim 2, wherein: the dynamometer (3), the laser rotation speed sensor (16) and the motor (10) are respectively connected with the console (39) through electric wires.
4. A coupling reliability testing system according to claim 1, wherein:
the piezoelectric ceramic actuator (29), the displacement sensor (33) and the No. 1 pull pressure sensor (14) are respectively connected with a control console (39) through electric wires.
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| CN201859054U (en) * | 2010-09-29 | 2011-06-08 | 三一重型装备有限公司 | Travel speed reducer test bed |
| CN103411767A (en) * | 2013-08-18 | 2013-11-27 | 吉林大学 | Mechanical connecting fastener reliability test bed with bi-directional loading simulation function |
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| US5337868A (en) * | 1992-01-02 | 1994-08-16 | Eaton Corporation | Touch point identification for automatic clutch controller |
| CN105675298B (en) * | 2016-04-15 | 2018-02-02 | 青岛科技大学 | A kind of corner-type Hooks coupling universal coupling testing stand |
| CN105699078B (en) * | 2016-04-21 | 2018-02-02 | 青岛科技大学 | A kind of multifunctional universal of adjustable angle is coupler test-bed |
| CN206601234U (en) * | 2017-01-24 | 2017-10-31 | 青岛科技大学 | A kind of closed Hooks coupling universal coupling testing stand |
| CN107101826A (en) * | 2017-06-06 | 2017-08-29 | 青岛科技大学 | Close energy-saving type Hooks coupling universal coupling transmission test bench |
| CN209230562U (en) * | 2018-11-16 | 2019-08-09 | 襄阳五二五泵业有限公司 | A kind of shaft coupling quick centring alignment device |
| CN209296310U (en) * | 2019-01-11 | 2019-08-23 | 东方电气集团东方汽轮机有限公司 | It is a kind of for testing the pilot system of wind-powered electricity generation shaft coupling performance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201859054U (en) * | 2010-09-29 | 2011-06-08 | 三一重型装备有限公司 | Travel speed reducer test bed |
| CN103411767A (en) * | 2013-08-18 | 2013-11-27 | 吉林大学 | Mechanical connecting fastener reliability test bed with bi-directional loading simulation function |
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Effective date of registration: 20231123 Address after: No. 60-8 Hanyang Street, Longtan District, Jilin Province, 132000 (production location: Beishan Village, Jiangbei Township, Longtan District) Patentee after: Jilin Jida Powder Engineering Equipment Co.,Ltd. Address before: 132013 Beihua University, 3999 Binjiang East Road, Fengman District, Jilin City, Jilin Province Patentee before: BEIHUA University |
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