CN200962079Y - Impulse quantity adjustment device of liquid pressure impulse fatigue test machine - Google Patents
Impulse quantity adjustment device of liquid pressure impulse fatigue test machine Download PDFInfo
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- CN200962079Y CN200962079Y CNU2006200108093U CN200620010809U CN200962079Y CN 200962079 Y CN200962079 Y CN 200962079Y CN U2006200108093 U CNU2006200108093 U CN U2006200108093U CN 200620010809 U CN200620010809 U CN 200620010809U CN 200962079 Y CN200962079 Y CN 200962079Y
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- fan
- shaped braces
- gear
- hydraulic
- crank
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Abstract
Disclosed is a hydraulic pulse of fatigue test system pulsating conditioning, which can continuously adjust stepless hydraulic pulse Fatigue Test System pulsating hydraulic oil displacement size, and realize the pulsation of hydraulic fatigue testing machine required samples of different stiffness of the pulsation requirements, comprising a crank rocker, and the end of the crank and connecting rod and rocker hinged together end the linkage rod linkage rod with the other end of the piston rod articulated, which is also set up characterized of being described in the inflection point and Rocker hinged on the other side of the bypass and can be installed in the main body of the fan-shaped tooth-bearing-rotating fan-shaped teeth, as well as with the fan-gear drive mechanism, described in a fan-shaped teeth installed at the ends of the rotary-center distance ,which referrs to the rocker installed at the ends of the rotary center set up in the distance and referred to the two ends of the rotary joint-center distance, the three equal. The utility model is mainly used in the hydraulic system of fluctuating adjustment.
Description
Technical field
The utility model relates to the hydraulic pulsation fatigue tester, relates in particular to the pulsator of the tired dynamic testing machine of hydraulic pulsation.
Background technology
The tired load test of hydraulic pulsation system adopts machine--electricity-liquid integrated, give full play to machinery-electronics-hydraulic pressure advantage separately, and carry out ingenious combination, the novel dynamic test system of development.This fatigue load test system is applicable to bridge, locomotive frame and various large-scale component before and after various large parts such as rail and welding joint thereof, concrete structure, bridge, various truss, automobile chassis, the automobile is carried out static compression test and unidirectional dynamic testing pulse fatigue.Pulsator is the mechanism that produces high-pressure pulsating oil, partly is made up of excitation buncher, adjustable crank and rocker mechanism, impulse clinder, load maintaining valve and lubricating system etc.Pulsator pumps by adjustable toggle drive impulse clinder piston and makes system produce pulse hydraulic oil, and its characteristics of motion meets sine wave.The pressure of pulsation oil is by the adjustment of load maintaining valve, and the percent ripple size realizes by the offset of adjusting the eccentric mechanism endplay device.Usually the offset of adjusting the eccentric mechanism endplay device is to adopt to change the movement locus that length of connecting rod is adjusted gangbar and rod connection point, to change the coupler-point curve of this point, change piston at in-oil cylinder displacement by the gangbar that is connected with piston rod, realize the adjustment of pulse hydraulic oil mass.But there is following shortcoming in this scheme: 1, be difficult to realize adjusting continuously fast.Adjustment process needs to shut down, and could change connecting rod, has a strong impact on the test efficiency of testing machine; 2, the length of connecting rod difference of Geng Huaning, the pulse hydraulic oil mass after the adjusting can be not continuous, is difficult to realize stepless adjustment, can not satisfy the requirement of hydraulic pulsation fatigue test system to the required percent ripple of different-stiffness sample.
Summary of the invention
The utility model has proposed a kind of hydraulic pulsation fatigue test system percent ripple regulating device at deficiency of the prior art, it can regulate hydraulic pressure testing pulse fatigue system pulse hydraulic oil displacement size by continuous stepless, realizes the requirement of hydraulic pulsation fatigue tester to the required percent ripple of different-stiffness sample.
This programme is realized by following technical measures: it comprises crank and rocker mechanism, the hinged gangbar of one end of the connecting rod of one end and crank and rocker mechanism and rocking bar, the other end and the piston rod of gangbar are hinged, it is characterized in that also being provided with hinged and fan-shaped braces that but winding places the fan-shaped braces bearing on the fuselage to rotate at the other end of its flex point and described rocking bar, and the driving mechanism that cooperates with fan-shaped braces, be arranged at the rotary pair centre distance at described fan-shaped braces two ends, be arranged at the rotary pair centre distance and the rotary pair centre distance that is arranged at described gangbar two ends at described rocking bar two ends, the three equates.
The beneficial effect of this programme can be learnt according to the narration to such scheme, because fan-shaped braces lower end revolute links to each other with fuselage, upper end revolute and rocking bar one end revolute are secondary altogether, rocking bar other end revolute and gangbar one end revolute, the small end of connecting rod of crank and rocker mechanism is secondary altogether, the gangbar other end links to each other with the impulse clinder piston, by of the adjustment of fan-shaped braces driving mechanism to fan-shaped braces frame revolute angle, realization is to the adjustment of crank and rocker mechanism mid frame position and size, change the movement locus of rocking bar and gangbar pin joint, thereby change the displacement of impulse clinder piston, realize the change of the pulse hydraulic oil discharge capacity of hydraulic pulsation fatigue tester, efficiently solve the adjusting to the required percent ripple of different-stiffness sample in loading procedure of hydraulic pulsation fatigue test system.Therefore the utility model has compared with prior art been realized technical purpose.
The concrete characteristics of this programme also have, described driving mechanism comprise handwheel and the worm screw that is attached thereto, with the worm gear of worm mesh, the axle center gear of worm gear and the engagement of fan-shaped braces, realization is to the manual adjustment of the fan-shaped braces anglec of rotation.Described driving mechanism comprises micromotor and the self-locking speed-down mechanism that is connected with the micromotor output shaft, and gear in the self-locking speed-down mechanism and the engagement of fan-shaped braces realize the adjustment of the fan-shaped braces anglec of rotation.Described self-locking speed-down mechanism comprises the small gear that is connected with micro-motor, with the small gear coaxial worm, with the big worm gear of worm mesh, with the big worm gear axle center gear of braces engagement, realizes the adjustment of motor output speed and the self-locking of driving mechanism.On fan-shaped braces bearing, be provided with travel switch, limit the rotating range of fan-shaped braces.Top at micromotor is provided with indicator, the size of the percent ripple of regulating in order to indication hydraulic pressure pulse fatigue testing machine percent ripple regulating device.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the utility model principle schematic;
When Fig. 2 was in maximum pulsation discharge capacity for piston, crank and rocker mechanism when rocking arm is in the limit on the left position and sector chord position were put synoptic diagram;
When Fig. 3 was in maximum pulsation discharge capacity for piston, crank and rocker mechanism when rocking arm is in the limit on the right-right-hand limit position and sector chord position were put synoptic diagram;
When Fig. 4 was in the minimal ripple discharge capacity for piston, crank and rocker mechanism when rocking arm is in the limit on the left position and sector chord position were put synoptic diagram;
When Fig. 5 was in maximum pulsation discharge capacity for piston, crank and rocker mechanism when rocking arm is in the limit on the right-right-hand limit position and sector chord position were put synoptic diagram;
Fig. 6 be among Fig. 7 C-C to view;
Fig. 7 is a hydraulic pulsation fatigue tester percent ripple regulating device structural representation;
Among the figure, 1, small gear, 2, worm screw, 3, big worm gear, 4, gear, 5, fan-shaped braces, 6, crank, 7, connecting rod, 8, rocking bar, 9, impulse clinder, 10, guide rail, 11, gangbar, 12, micromotor, 13, indicator, 14, travel switch, 15, hinge, 16, bearing, 17, fuselage, 18, fan-shaped braces bearing.
Embodiment
The pulse hydraulic oil discharge capacity Principles of Regulation of hydraulic pulsation fatigue tester percent ripple regulating device as shown in Figure 1, hydraulic pulsation fatigue tester percent ripple regulating device structure is shown in Fig. 6～7, whole hydraulic pulsation fatigue tester percent ripple regulating device is installed on the fuselage 17, it comprises crank and rocker mechanism, the connecting rod 7 of one end and crank and rocker mechanism and the hinged gangbar 11 of an end of rocking bar 8, the other end and the piston rod of gangbar 11 are hinged, also be provided with hinged and fan-shaped braces 5 that but winding places the fan-shaped braces bearing 18 on the fuselage to rotate at the other end of its flex point and described rocking bar 8, and the driving mechanism that cooperates with fan-shaped braces 5, be arranged at the rotary pair centre distance at described fan-shaped braces 5 two ends, be arranged at the rotary pair centre distance and the rotary pair centre distance that is arranged at described gangbar 11 two ends at described rocking bar 8 two ends, the three equates.Described driving mechanism can adopt handwheel and the worm screw that is attached thereto, with the worm gear of worm mesh, the axle center gear of worm gear and the engagement of fan-shaped braces, realization is to the manual adjustment of the fan-shaped braces anglec of rotation.The self-locking speed-down mechanism that described driving mechanism also can adopt micromotor 12 and be connected with the micromotor output shaft, gear in the self-locking speed-down mechanism and 5 engagements of fan-shaped braces realize the adjustment of the fan-shaped braces anglec of rotation.Described self-locking speed-down mechanism comprises the small gear 1 of the gearing mesh that is connected with micro-motor, with small gear 1 coaxial worm 2, with the big worm gear 3 of worm screw 2 engagements,, realize the adjustment of motor output speed and the self-locking of driving mechanism with the big worm gear 3 axle center gears 4 of fan-shaped braces 5 engagements.On fan-shaped braces bearing 18, be provided with travel switch 14, limit the rotating range of fan-shaped braces.Be provided with indicator 13 on the top of micromotor 12, the size of the percent ripple of regulating in order to indication hydraulic pressure pulse fatigue testing machine percent ripple regulating device.
One end and the connecting rod 7 of the rocking bar 8 of crank and rocker mechanism are hinged, and the flex point D0 on the other end and the fan-shaped braces 5 is point articulated.The gear 4 that micromotor 12 drives on small gear 1, worm screw 2, big worm gear 3 and the big worm gear 3 drives fan-shaped braces 5 around fan-shaped braces bearing 18 rotations, change the swing position of crank and rocker mechanism rocking bar 8, thereby change the movement locus that rocking bar 8, gangbar 11 and connecting rod 7 common hinged B are ordered, the movement locus that B is ordered is with D
0Be the center of circle, D
0-Q is the camber line of radius, and then changes the displacement of impulse clinder piston, realizes the adjusting of hydraulic pulsation fatigue test system hydraulic pulsation displacement size.By the adjustment of driving mechanism to the fan-shaped braces anglec of rotation, realize adjustment to crank and rocker mechanism mid frame position and size, the frame of crank and rocker mechanism is the axis of rotation and the fan-shaped braces flex point D of crank
0Line, this shelf position and size change along with the rotational angle of fan-shaped braces 5.Change the movement locus of rocking bar and connecting rod hinge point, thereby change the displacement of impulse clinder piston, realize the change of the pulse hydraulic oil discharge capacity of hydraulic pulsation fatigue tester,
Before pulsation discharge capacity governor motion is installed, must test to each element, the gear 4 that fan-shaped braces 5 is meshed with it grinds, and eliminates the gap, keeps not having in the adjustment process and impacts.Bearing Installation requires to rotate flexibly.Adopt manual adjustments after installing, answer stability of rotation, no stuck phenomenon, final assembly finishes carries out long fatigue life test.
When Fig. 2～3 were in maximum pulsation discharge capacity for piston, crank and rocker mechanism and the sector chord position of sub rocker arm other places when left and right extreme position put synoptic diagram; In conjunction with Fig. 1, when crank 6 rotates drivening rod 7 motions, from the A point to the A1 point, rocking bar 8 swings, because rocking bar 8, gangbar 11 and connecting rod 7 are articulated in the B point jointly, the B point on the connecting rod 7 moves to the B1 point thereupon, promote gangbar 11 from the O point to the O1 point, be the displacement of impulse clinder 9 pistons, this moment the displacement maximum, corresponding pulse hydraulic oil discharge capacity maximum.
When Fig. 3～4 were in the minimal ripple discharge capacity for piston, crank and rocker mechanism and the sector chord position of sub rocker arm other places when left and right extreme position put synoptic diagram; When needs reduce the discharge capacity of pulse hydraulic oil, open micromotor 12 and drive self-locking speed-down mechanism, fan-shaped braces is turned clockwise along A-B, in the process of rotation, pulse hydraulic oil discharge capacity reduces thereupon, because rotation along with fan-shaped braces 5, can make the D1 point motion of D0 point in Fig. 1 of rocking bar 8 upper ends, rocking bar 8, gangbar 11 and connecting rod 7 common tie point B's is increasing with the moving displacement of piston rod on vertical direction under the drive of toggle, more and more littler in the same way moving displacement with piston rod.When D0 overlaps with the D1 point, be that rocking bar 8 is with overlapping with gangbar 11, rocking bar 8, gangbar 11 and connecting rod 7 common tie point B have only under the drive of toggle and the motion of piston rod on vertical direction, and not with piston rod in the same way motion, this moment, O and O1 point overlapped, the displacement minimum of impulse clinder 9 pistons is zero, and corresponding pulse hydraulic oil discharge capacity minimum is zero, and hydraulic system is in the static(al) state.
Claims (6)
1, a kind of hydraulic pulsation fatigue tester percent ripple regulating device, it comprises crank and rocker mechanism, the hinged gangbar of one end of the connecting rod of one end and crank and rocker mechanism and rocking bar, the other end and the piston rod of gangbar are hinged, it is characterized in that also being provided with hinged and fan-shaped braces that but winding places the fan-shaped braces bearing on the fuselage to rotate at the other end of its flex point and described rocking bar, and the driving mechanism that cooperates with fan-shaped braces, the rotary pair that is arranged at described fan-shaped braces two ends is by heart distance, be arranged at the rotary pair centre distance and the rotary pair centre distance that is arranged at described gangbar two ends at described rocking bar two ends, the three equates.
2, hydraulic pulsation fatigue tester percent ripple regulating device according to claim 1, it is characterized in that described driving mechanism comprise handwheel and the worm screw that is attached thereto, with the worm gear of worm mesh, the axle center gear of worm gear meshes with fan-shaped braces.
3, hydraulic pulsation fatigue tester percent ripple regulating device according to claim 1 is characterized in that described driving mechanism comprises micromotor and the self-locking speed-down mechanism that is connected with the micromotor output shaft, gear in the self-locking speed-down mechanism and the engagement of fan-shaped braces.
4, hydraulic pulsation fatigue tester percent ripple regulating device according to claim 3, it is characterized in that described self-locking speed-down mechanism comprises the small gear that is connected with micro-motor, with the small gear coaxial worm, with the big worm gear of worm mesh, with the big worm gear axle center gear of braces engagement.
5, according to claim 1 or 2 or 3 or 4 described hydraulic pulsation fatigue tester percent ripple regulating devices, it is characterized in that on fan-shaped braces bearing, being provided with travel switch.
6, according to claim 1 or 2 or 3 or 4 described hydraulic pulsation fatigue tester percent ripple regulating devices, it is characterized in that being provided with indicator on the top of micromotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200108093U CN200962079Y (en) | 2006-10-16 | 2006-10-16 | Impulse quantity adjustment device of liquid pressure impulse fatigue test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200108093U CN200962079Y (en) | 2006-10-16 | 2006-10-16 | Impulse quantity adjustment device of liquid pressure impulse fatigue test machine |
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| Publication Number | Publication Date |
|---|---|
| CN200962079Y true CN200962079Y (en) | 2007-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200108093U Expired - Lifetime CN200962079Y (en) | 2006-10-16 | 2006-10-16 | Impulse quantity adjustment device of liquid pressure impulse fatigue test machine |
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| CN (1) | CN200962079Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393340A (en) * | 2011-09-01 | 2012-03-28 | 浙江大学 | Hydraulic fatigue test system of connecting rod |
-
2006
- 2006-10-16 CN CNU2006200108093U patent/CN200962079Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393340A (en) * | 2011-09-01 | 2012-03-28 | 浙江大学 | Hydraulic fatigue test system of connecting rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081128 Address after: Shanghai City, Songjiang District Spring Road No. 18, zip code: 201612 Patentee after: MTS Industry System (China) Co., Ltd. Address before: No. 1992, Qinghe North Road, Tianqiao District, Shandong, Ji'nan: 250032 Patentee before: Jinan SANS Testing Machine Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: METERS INDUSTRY SYSTEMS ( CHINA) CO., LTD. Free format text: FORMER OWNER: JINAN XINSANSI DYNAMIC EXPERIMENT TECHNOLOGY CO., LTD. Effective date: 20081128 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071017 |
|
| EXPY | Termination of patent right or utility model |