CN108680346B - Fatigue test bench for continuous reciprocating motion device - Google Patents
Fatigue test bench for continuous reciprocating motion device Download PDFInfo
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- CN108680346B CN108680346B CN201810455516.3A CN201810455516A CN108680346B CN 108680346 B CN108680346 B CN 108680346B CN 201810455516 A CN201810455516 A CN 201810455516A CN 108680346 B CN108680346 B CN 108680346B
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- 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
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Abstract
The invention discloses a fatigue test bench for a continuous reciprocating motion device, which can realize the reciprocating motion stress of a simulation device under the real working condition, has stepless adjustment of the force, and can accurately measure the motion times and the stress in the motion process. This tired testboard of continuity reciprocating motion device mainly comprises by survey device installation base, spare part fixed profile, the device under test, survey device and pressure sensor flexonics spare, pressure sensor and the two hydraulic cylinder flexonics spare that go out of double-end, the two hydraulic cylinder installation bases that go out of double-end, the two hydraulic cylinders that go out of double-end, the two hydraulic cylinder and resistance ruler flexonics spare that go out of double-end, resistance ruler installation base, the resistance ruler, the panel, right connecting pipe, right choke valve, the oil tank, hydraulic oil, left choke valve, left connecting pipe. The resistance generated by pumping the hydraulic oil in the oil tank through the double-head double-hydraulic-cylinder replaces the load force of the tested device in the motion process, and the force can be adjusted by adjusting the left throttle valve and the right throttle valve.
Description
Technical Field
The invention relates to a fatigue testing system of a device, in particular to a device with high-speed continuous reciprocating motion.
Background
Fatigue failure is one of the major causes of failure in mechanical parts and devices. According to statistics, more than 80% of the failures of mechanical devices belong to fatigue failure, and no obvious abnormality exists before the fatigue failure, so the fatigue failure often occurs in a moment and is easy to cause larger accidents. The existing loading mode of the fatigue test bench for the continuous reciprocating motion device simulates stress by using a method for hanging a heavy object, the mode cannot truly simulate the reciprocating motion stress of the device under a real working condition, the load weight is troublesome to adjust, the fatigue test is inconvenient to use, and the test efficiency is low. The invention simulates the stress process to carry out the fatigue test of the device by referring to the real stress of the device in the actual working process.
Disclosure of Invention
The invention aims to solve the technical problem of designing an experiment table for simulating real working conditions to load force in a fatigue test experiment of a reciprocating motion device so as to realize the accuracy and the high efficiency of the fatigue test. The device has the advantages of high automation degree, stable and reliable performance and complete functions, and can effectively improve the accuracy of fatigue test and the working efficiency of test work.
To achieve the above object, the solution mainly aiming at the loading and adjusting difficulty of the fatigue test loading force is as follows: the motion mode of the continuous reciprocating motion device is continuous telescopic motion, and the extending motion and the retracting motion are all acted by force. The double-head double-hydraulic-cylinder pressure measuring device adopts a double-head double-hydraulic-cylinder to be connected with a device to be measured, and a pressure sensor is arranged between the double-head double-hydraulic-cylinder and the device to be measured, so that the magnitude of the load force can be measured in real time. The double-head double-hydraulic cylinder and the tested device do telescopic motion together. The two liquid inlets of the double-head double-hydraulic cylinder are connected with the oil tank through an oil pipe and a throttle valve, the resistance formed by pumping hydraulic oil in the oil tank by utilizing negative pressure generated by the motion of the double-head double-hydraulic cylinder is utilized to simulate the motion stress of the device, and the force, namely the size of the load force, can be adjusted by adjusting the throttle valve.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a connection diagram of a double-head double-hydraulic cylinder and an oil tank according to the invention;
FIG. 3 is a right side view of the overall construction of the invention;
FIG. 4 is a front elevational view of the overall construction of the invention;
in the figure: 1. the device comprises a tested device mounting base, 2 parts and fixed sectional materials, 3 a tested device, 4 a tested device and pressure sensor flexible connecting piece, 5 a pressure sensor, 6 a pressure sensor and double-head double-hydraulic cylinder flexible connecting piece, 7 a double-head double-hydraulic cylinder mounting base, 8 a double-head double-hydraulic cylinder, 9 a double-head double-hydraulic cylinder and resistance ruler flexible connecting piece, 10 a resistance ruler mounting base, 11 a resistance ruler, 12 a panel, 13 a right connecting pipe, 14 a right throttling valve, 15 an oil tank, 16 hydraulic oil, 17 a left throttling valve, 18 a left connecting pipe, 19 a right oil suction pipe, 20 a left oil suction pipe.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, a fatigue test bench for a continuous reciprocating motion device comprises a tested device mounting base 1, a part fixing profile 2, a tested device 3, a tested device and pressure sensor flexible connecting piece 4, a pressure sensor 5, a pressure sensor and double-head double-hydraulic cylinder flexible connecting piece 6, a double-head double-hydraulic cylinder mounting base 7, a double-head double-hydraulic cylinder 8, a double-head double-hydraulic cylinder and resistance ruler flexible connecting piece 9, a resistance ruler mounting base 10, a resistance ruler 11, a panel 12, a right connecting pipe 13, a right throttle valve 14, an oil tank 15, hydraulic oil 16, a left throttle valve 17, a left connecting pipe 18, a right oil suction pipe 19 and a left oil suction pipe 20;
the bottoms of the tested device mounting base 1, the double-head double hydraulic cylinder mounting base 7 and the resistance ruler mounting base 10 are fixed on the part fixing section bar 2 through bolts; the tested device 3, the double-head double-hydraulic cylinder 8 and the pressure sensor 5 are connected with the pressure sensor flexible connecting piece 4 through the tested device; the double-head double-hydraulic cylinder 8 and the resistance ruler 11 are connected with the flexible connecting piece 9 of the resistance ruler through the double-head double-hydraulic cylinder; one end of a left throttle valve 17 is connected with the oil tank 15, and the other end of the left throttle valve is connected with the double-head double-hydraulic cylinder 8 through a left connecting pipe 18; one end of a right throttle valve 14 is connected with an oil tank 15, and the other end of the right throttle valve is connected with the double-head double-hydraulic cylinder 8 through a right connecting pipe 13; the double-head double-hydraulic cylinder 8 is connected with the resistance ruler 11 through the double-head double-hydraulic cylinder and the resistance ruler flexible connecting piece 9; the device to be tested 3 is arranged on the device to be tested mounting base 1; the double-head double hydraulic cylinders 8 are arranged on two oppositely arranged double-head double hydraulic cylinder mounting bases 7; the resistance ruler 11 is fixed on the resistance ruler mounting base 10 through a pressing plate and screws; hydraulic oil 16 is filled in the oil tank 15; the left throttle valve 17 is communicated with the oil tank 15 through a left oil suction pipe 20, and the right throttle valve 14 is communicated with the oil tank 15 through a right oil suction pipe 19;
the device comprises a device installation base 1 to be tested, part fixing profiles 2, a device 3 to be tested, a flexible connecting piece 4 of the device to be tested and a pressure sensor, a pressure sensor 5, a flexible connecting piece 6 of the pressure sensor and double-head double-hydraulic-cylinder, a mounting base 7 of the double-head double-hydraulic-cylinder, a flexible connecting piece 9 of the double-head double-hydraulic-cylinder and a resistance ruler, a mounting base 10 of the resistance ruler, a resistance ruler 11, a right connecting pipe 13, a right throttle valve 14, an oil tank 15, hydraulic oil 16, a left throttle valve 17, a left connecting pipe 18, a right oil suction pipe 19 and a left oil suction pipe 20 which are all arranged on a panel.
The device to be measured 3, the double-head double-hydraulic cylinder 8, the pressure sensor 5 and the resistance ruler 11 are coaxially arranged; in the initial stage, a push rod of the tested device 3 is in a retracting state, a piston of the double-head double-hydraulic cylinder 8 is positioned at the left end of the cylinder body, and the resistance ruler 11 is in an extending state; when the test is started, a push rod of the tested device 3 is pushed out, the piston of the double-head double-hydraulic cylinder 8 moves to the right from the left end, the push rod of the resistance ruler 11 is retracted, the left side of the piston of the double-head double-hydraulic cylinder 8 is in a vacuum state, and hydraulic oil 16 in the oil tank 15 is pumped into the hydraulic cylinder through the left throttle valve 17 and the left connecting pipe 18; meanwhile, the right side of the piston of the double-head double-hydraulic cylinder 8 is in a compressed state, hydraulic oil on the right side of the piston of the double-head double-hydraulic cylinder 8 is pressed into an oil tank 15 through a right connecting pipe 13 and a right throttle valve 14, and the hydraulic oil is sucked from the oil tank in a reciprocating motion; during the movement, the left throttle valve 17 and the right throttle valve 14 are adjusted to change the load of the device to be measured 3, the load is measured by the pressure sensor 5, and the stroke is controlled by the resistance ruler 11.
Claims (2)
1. The utility model provides a fatigue test platform of continuity reciprocating motion device which characterized in that: the device comprises a device installation base (1) to be tested, a part fixing profile (2), a device to be tested (3), a device to be tested and pressure sensor flexible connecting piece (4), a pressure sensor (5), a pressure sensor and double-head double-hydraulic cylinder flexible connecting piece (6), a double-head double-hydraulic cylinder installation base (7), a double-head double-hydraulic cylinder (8), a double-head double-hydraulic cylinder and resistance ruler flexible connecting piece (9), a resistance ruler installation base (10), a resistance ruler (11), a panel (12), a right connecting pipe (13), a right throttle valve (14), an oil tank (15), hydraulic oil (16), a left throttle valve (17), a left connecting pipe (18), a right oil suction pipe (19) and a left oil suction pipe (20);
the bottoms of the tested device mounting base (1), the double-head double-hydraulic cylinder mounting base (7) and the resistance ruler mounting base (10) are fixed on the part fixing section bar (2) through bolts; the device to be measured (3) and the pressure sensor (5) are connected with the pressure sensor flexible connecting piece (4) through the device to be measured; the double-head double-hydraulic cylinder (8) and the pressure sensor (5) are connected with the pressure sensor flexible connecting piece (4) through a tested device; the double-head double-hydraulic cylinder (8) is connected with the resistance ruler (11) through the double-head double-hydraulic cylinder and the resistance ruler flexible connecting piece (9); one end of a left throttle valve (17) is connected with the oil tank (15), and the other end of the left throttle valve is connected with a double-head double-hydraulic cylinder (8) through a left connecting pipe (18); one end of a right throttle valve (14) is connected with an oil tank (15), and the other end of the right throttle valve is connected with a double-head double-hydraulic cylinder (8) through a right connecting pipe (13); the device to be tested (3) is arranged on the device to be tested mounting base (1); the double-head double hydraulic cylinders (8) are arranged on two opposite double-head double hydraulic cylinder mounting bases (7); the resistance ruler (11) is fixed on the resistance ruler mounting base (10) through a pressing plate and a screw; hydraulic oil (16) is filled in the oil tank (15); the left throttle valve (17) is communicated with the oil tank (15) through a left oil suction pipe (20), and the right throttle valve (14) is communicated with the oil tank (15) through a right oil suction pipe (19);
the device comprises a device installation base (1) to be tested, part fixing profiles (2), a device to be tested (3), a device to be tested and pressure sensor flexible connecting piece (4), a pressure sensor (5), a pressure sensor and double-head double-hydraulic cylinder flexible connecting piece (6), a double-head double-hydraulic cylinder installation base (7), a double-head double-hydraulic cylinder (8), a double-head double-hydraulic cylinder and resistance scale flexible connecting piece (9), a resistance scale installation base (10), a resistance scale (11), a right connecting pipe (13), a right throttle valve (14), an oil tank (15), hydraulic oil (16), a left throttle valve (17), a left connecting pipe (18), a right oil suction pipe (19) and a left oil suction pipe (20) which are all installed on a panel (12).
2. The fatigue test stand for the continuous reciprocating device according to claim 1, wherein: the device to be measured (3), the double-head double-hydraulic cylinder (8), the pressure sensor (5) and the resistance ruler (11) are coaxially arranged; in the initial stage, a push rod of the device to be tested (3) is in a retracting state, a piston of the double-head double hydraulic cylinder (8) is positioned at the left end of the cylinder body, and the resistance ruler (11) is in an extending state; when the test is started, a push rod of the tested device (3) is pushed out, the pistons of the double-head double-hydraulic-cylinder (8) move to the right from the left end, the push rod of the resistance ruler (11) is retracted, the left sides of the pistons of the double-head double-hydraulic-cylinder (8) are in a vacuum state, and hydraulic oil (16) in the oil tank (15) is pumped into the hydraulic cylinders through the left throttle valve (17) and the left connecting pipe (18); meanwhile, the right side of the piston of the double-head double-hydraulic cylinder (8) is in a compressed state, hydraulic oil on the right side of the piston of the double-head double-hydraulic cylinder (8) is pressed into an oil tank (15) through a right connecting pipe (13) and a right throttle valve (14), and the hydraulic oil is sucked from the oil tank in a reciprocating motion mode; in the movement process, the left throttle valve (17) and the right throttle valve (14) are adjusted to change the load of the device to be measured (3), the load is measured through the pressure sensor (5), and the stroke is controlled through the resistance ruler (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810455516.3A CN108680346B (en) | 2018-05-14 | 2018-05-14 | Fatigue test bench for continuous reciprocating motion device |
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| CN201810455516.3A CN108680346B (en) | 2018-05-14 | 2018-05-14 | Fatigue test bench for continuous reciprocating motion device |
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| CN108680346A CN108680346A (en) | 2018-10-19 |
| CN108680346B true CN108680346B (en) | 2020-02-07 |
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| CN109848542B (en) * | 2018-12-24 | 2021-03-30 | 北京建筑大学 | Aluminum alloy vehicle body friction stir welding repair equipment and control method thereof |
Citations (6)
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| CN202241218U (en) * | 2011-09-08 | 2012-05-30 | 江阴市长龄机械制造有限公司 | Reciprocating motion working table |
| JP5024877B2 (en) * | 2007-11-05 | 2012-09-12 | トヨタ自動車株式会社 | Fatigue test linear actuator |
| CN103821690A (en) * | 2014-03-24 | 2014-05-28 | 龙科 | Hydraulic drive reciprocating duplex pump |
| CN103939421A (en) * | 2014-03-10 | 2014-07-23 | 北京工业大学 | Fatigue test method and device used for hydraulic cylinder |
| CN104677624A (en) * | 2015-03-19 | 2015-06-03 | 天津航天瑞莱科技有限公司苏州分公司 | Air pressure fatigue load test method and device for train window |
| CN107505202A (en) * | 2017-06-21 | 2017-12-22 | 柳州职业技术学院 | A kind of material fatigue testing machine tool loading device |
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2018
- 2018-05-14 CN CN201810455516.3A patent/CN108680346B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5024877B2 (en) * | 2007-11-05 | 2012-09-12 | トヨタ自動車株式会社 | Fatigue test linear actuator |
| CN202241218U (en) * | 2011-09-08 | 2012-05-30 | 江阴市长龄机械制造有限公司 | Reciprocating motion working table |
| CN103939421A (en) * | 2014-03-10 | 2014-07-23 | 北京工业大学 | Fatigue test method and device used for hydraulic cylinder |
| CN103821690A (en) * | 2014-03-24 | 2014-05-28 | 龙科 | Hydraulic drive reciprocating duplex pump |
| CN104677624A (en) * | 2015-03-19 | 2015-06-03 | 天津航天瑞莱科技有限公司苏州分公司 | Air pressure fatigue load test method and device for train window |
| CN107505202A (en) * | 2017-06-21 | 2017-12-22 | 柳州职业技术学院 | A kind of material fatigue testing machine tool loading device |
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