CN103743522B - For the stiffness variable supporting structure of soft bearing balancing machine - Google Patents
For the stiffness variable supporting structure of soft bearing balancing machine Download PDFInfo
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- CN103743522B CN103743522B CN201410038673.6A CN201410038673A CN103743522B CN 103743522 B CN103743522 B CN 103743522B CN 201410038673 A CN201410038673 A CN 201410038673A CN 103743522 B CN103743522 B CN 103743522B
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- roller bearing
- spill block
- cylindrical shell
- cylinder
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Abstract
The present invention discloses a kind of stiffness variable supporting structure for soft bearing balancing machine.Vibrating mass comprises tested rotor, rotary main shaft, bearing and cylindrical shell, cylindrical shell installing plate and spill block, is provided with spill block on the upside of cylindrical shell installing plate; Base passes through the supported by plate spring of both sides on cylindrical shell installing plate, on base between the leaf spring that L shape back up pad is fixed on both sides, L shape support plate top surface is provided with the guide rail being parallel to leaf spring, base plate bottom surface is connected to guide rail by slide block and moves along guide rail, the upper end face of base plate near cylindrical shell installing plate side is provided with the roller bearing that connect corresponding to spill block, and roller bearing can snap in spill block; L shape back up pad bottom is provided with cylinder, and the piston rod of cylinder is fixedly connected with the slide block of base plate bottom surface, and the piston rod of cylinder is parallel with leaf spring.Structure of the present invention is simple, effectively overcomes soft bearing balancing machine and measures the resonance drawback that rotating speed reaches critical point, have very high reliability and testing efficiency.
Description
Technical field
The present invention relates to a kind of stiffness variable supporting structure, especially relate to a kind of stiffness variable supporting structure for soft bearing balancing machine.
Background technology
The large quality disc-like rotor such as water pump vane, automobile clutch has widespread use in productive life.For this kind of rotor, due to reasons such as design, material skewness and manufacture mismachining tolerances, rotation when its centroidal axis and work does not overlap, and this situation is called that rotor has amount of unbalance or unbalance.Rotor with excessive amount of unbalance can produce vibration when high speed rotational operation, brings noise, shortens life of product, even bring danger, must eliminate the amount of unbalance of induced vibration, namely do transient equilibrium before therefore rotor is assembled into complete machine.
When transient equilibrium is done to rotor, first need the initial unbalance, measuring rotor.At present, the equilibrator for large quality disc-like rotor of product has been formed, in hard bearing mode.Be compared to soft underprop mode, hard bearing balan requires that the rigidity on support plinth and basis is very large on the one hand, the special vibration transducer needing precision very high on the other hand and Signal separator amplifying circuit.In other words, the measuring accuracy of hard bearing balan directly depends on above two aspects.Although soft bearing balancing machine can overcome the high request drawback of these two aspects, also there is the deficiency of self: need in rotor Up and down speeding to cross rotating speed critical point, the strenuous vibration of equilibrator must be caused like this, namely resonate.Because the quality of tested rotor and measurement support unit is comparatively large, resonance effect is comparatively obvious, can damage physical construction, belt and drive motor etc. time serious.
Summary of the invention
For overcoming the deficiency of soft bearing balancing machine, the object of the present invention is to provide a kind of stiffness variable supporting structure for soft bearing balancing machine, effectively avoid resonance during soft bearing balancing machine lifting speed, for the measurement of the large quality rotor unbalance value of vertical soft bearing balancing machine.
The technical scheme of employing of the present invention is as follows:
The vibrating mass of soft bearing balancing machine of the present invention comprises tested rotor, rotary main shaft, bearing and cylindrical shell, cylindrical shell installing plate and spill block, is provided with spill block on the upside of cylindrical shell installing plate; Stiffness variable supporting structure comprises base, leaf spring, L shape back up pad, slide block, guide rail, cylinder and roller bearing, base passes through the supported by plate spring of both sides on the cylindrical shell installing plate of vibrating mass, on base between the leaf spring that L shape back up pad is fixed on both sides, L shape support plate top surface is provided with the guide rail being parallel to leaf spring, base plate bottom surface to be arranged on guide rail by slide block and to move along guide rail, the upper end face of base plate near cylindrical shell installing plate side is provided with the roller bearing that connect corresponding to spill block, and roller bearing can snap in spill block; L shape back up pad bottom is provided with cylinder, and the piston rod of cylinder is fixedly connected with the slide block of base plate bottom surface, and the piston rod of cylinder is parallel with leaf spring.
It is interference fit between described roller bearing and the Baltimore groove snapping in spill block.
The bottom land of described spill block Baltimore groove is square, and notch is hydraucone, and width of rebate is greater than the external diameter of roller bearing, and slot bottom width is less than the external diameter of roller bearing, is interference fit.
Described roller bearing surface is coated with polyurethane material, when roller bearing snaps in spill block, and the polyurethane material generation deformation of roller bearing surface.
The hydraucone gradient of described spill block Baltimore groove notch is 20 ~ 30 degree.
When the piston rod of described cylinder releases full stroke, roller bearing is stuck in spill block Baltimore groove and just contacts with bottom land.
The beneficial effect that the present invention has is:
1) structure is simple;
2) effectively overcome soft bearing balancing machine and measure the resonance drawback that rotating speed reaches critical point;
3) there is very high reliability and testing efficiency.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the anatomical connectivity schematic diagram of supporting structure of the present invention.
Fig. 3 is the structural representation of spill block.
In figure: the tested rotor of 1-, 2-rotary main shaft, 3-bearing and cylindrical shell, 4-cylindrical shell installing plate, 5-leaf spring, 6-spill block, 7-roller bearing, 8-base plate, 9-base, 10-link, 11-cylinder, 12-slide block, 13-guide rail, 14-L shape back up pad, 15-Baltimore groove.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1 and Figure 2, the present invention includes: the vibrating mass of soft bearing balancing machine comprises tested rotor 1, rotary main shaft 2, bearing and cylindrical shell 3, cylindrical shell installing plate 4 and spill block 6, is provided with spill block 6 on the upside of cylindrical shell installing plate 4, stiffness variable supporting structure comprises base 9, leaf spring 5, L shape back up pad 14, slide block 12, guide rail 13, cylinder 11 and roller bearing 7, base 9 is supported on the cylindrical shell installing plate 4 of vibrating mass by the leaf spring 5 of both sides, on base 9 between the leaf spring 5 that L shape back up pad 14 is fixed on both sides, L shape back up pad 14 end face is provided with the guide rail 13 being parallel to leaf spring 5, base plate 8 bottom surface to be arranged on guide rail 13 by slide block 12 and to move along guide rail, the upper end face of base plate 8 near cylindrical shell installing plate 4 side is provided with the roller bearing 7 that connect corresponding to spill block 6, roller bearing 7 can snap in spill block 6, L shape back up pad 14 bottom is provided with cylinder 11, and the piston rod of cylinder 11 is fixedly connected with the slide block 12 of base plate 8 bottom surface, and the piston rod of cylinder 11 is parallel with leaf spring 5.
It is interference fit between roller bearing 7 and the Baltimore groove snapping in spill block 6.
As shown in Figure 3, the bottom land of spill block 6 Baltimore groove is square, and notch is hydraucone, and width of rebate is greater than the external diameter of roller bearing 7, and slot bottom width is less than the external diameter of roller bearing 7, is interference fit.
Roller bearing 7 Surface coating has polyurethane material, and roller bearing 7 is polyurethane cladded type roller bearing, when roller bearing 7 snaps in spill block 6, and the polyurethane material generation deformation on roller bearing 7 surface.
The hydraucone of spill block 6 Baltimore groove notch has constant slope, and gradient is 20 ~ 30 degree.
When the piston rod of cylinder 11 releases full stroke, roller bearing 7 is stuck in spill block 6 Baltimore groove and just contacts with bottom land.
The vibrating mass be made up of rotor, rotary main shaft and cylindrical shell is bearing in base by leaf spring, forms soft underprop.
At grade, fixed concave block 6 on the cylindrical shell installing plate 4 of vibrating mass.During rotor lifting speed, cylinder advances, and forces roller bearing 7 to be clamp-oned in the Baltimore groove of spill block 6, makes vibrating mass be bearing in base by means of large rigidity back up pad, increase its rigidity and become hard bearing; When amount of unbalance is measured, cylinder exits, and drives roller bearing to be separated with spill block, recovers soft underprop.
During assembling, when cylinder 11 piston rod stretches out full stroke, roller bearing just clamp-ons the bottom land of spill block 6, and its object has two, and one is prevent leaf spring 5 tension, two be vibrating mass motion time on its swaying direction, increase constraining force, namely increase the swing rigidity of vibrating mass.
The specific embodiment of the invention course of work:
When tested rotor 1 lifting speed, the piston rod of cylinder 11 advances, and forces roller bearing 7 to be pressed in the Baltimore groove of spill block 6, makes vibrating mass be bearing in base by means of large rigidity back up pad, increase its rigidity and become hard bearing; When tested rotor 1 be raised to specify rotating speed carry out amount of unbalance measure time, cylinder 11 exits, drive roller bearing 7 be separated with spill block 6, recover soft underprop.Adopt this stiffness variable supporting structure, effectively can avoid the resonance of soft bearing balancing machine, substantially increase its reliability and testing efficiency.
Above-mentioned embodiment is used for explaining and the present invention is described, instead of limits the invention, and in the protection domain of spirit of the present invention and claim, any amendment make the present invention and change, all fall into protection scope of the present invention.
Claims (6)
1. the stiffness variable supporting structure for soft bearing balancing machine, the vibrating mass of soft bearing balancing machine comprises tested rotor (1), rotary main shaft (2), bearing and cylindrical shell (3), cylindrical shell installing plate (4) and spill block (6), cylindrical shell installing plate (4) upside is provided with spill block (6), it is characterized in that: stiffness variable supporting structure comprises base (9), leaf spring (5), L shape back up pad (14), slide block (12), guide rail (13), cylinder (11) and roller bearing (7), base (9) is supported on the cylindrical shell installing plate (4) of vibrating mass by the leaf spring (5) of both sides, on base (9) between the leaf spring (5) that L shape back up pad (14) is fixed on both sides, L shape back up pad (14) end face is provided with the guide rail (13) being parallel to leaf spring (5), base plate (8) bottom surface is arranged on guide rail (13) by slide block (12) and goes up and move along guide rail, the upper end face of base plate (8) near cylindrical shell installing plate (4) side is provided with the roller bearing (7) that connect corresponding to spill block (6), roller bearing (7) can snap in spill block (6), L shape back up pad (14) bottom is provided with cylinder (11), and the piston rod of cylinder (11) is fixedly connected with the slide block (12) of base plate (8) bottom surface, and the piston rod of cylinder (11) is parallel with leaf spring (5),
During rotor lifting speed, cylinder advances, and forces roller bearing (7) to be clamp-oned in the Baltimore groove of spill block (6), makes vibrating mass be bearing in base by means of large rigidity back up pad, increase its rigidity and become hard bearing; When amount of unbalance is measured, cylinder exits, and drives roller bearing to be separated with spill block, recovers soft underprop.
2. a kind of stiffness variable supporting structure for soft bearing balancing machine according to claim 1, is characterized in that: be interference fit between described roller bearing (7) and the Baltimore groove snapping in spill block (6).
3. a kind of stiffness variable supporting structure for soft bearing balancing machine according to claim 2, it is characterized in that: the bottom land of described spill block (6) Baltimore groove is square, notch is hydraucone, width of rebate is greater than the external diameter of roller bearing (7), slot bottom width is less than the external diameter of roller bearing (7), is interference fit.
4. a kind of stiffness variable supporting structure for soft bearing balancing machine according to claim 1 and 2, it is characterized in that: described roller bearing (7) Surface coating has polyurethane material, when roller bearing (7) snaps in spill block (6), the polyurethane material generation deformation on roller bearing (7) surface.
5. a kind of stiffness variable supporting structure for soft bearing balancing machine according to claim 1, is characterized in that: the hydraucone gradient of described spill block (6) Baltimore groove notch is 20 ~ 30 degree.
6. a kind of stiffness variable supporting structure for soft bearing balancing machine according to claim 1, it is characterized in that: when the piston rod of described cylinder (11) releases full stroke, roller bearing (7) is stuck in spill block (6) Baltimore groove and just contacts with bottom land.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038673.6A CN103743522B (en) | 2014-01-27 | 2014-01-27 | For the stiffness variable supporting structure of soft bearing balancing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038673.6A CN103743522B (en) | 2014-01-27 | 2014-01-27 | For the stiffness variable supporting structure of soft bearing balancing machine |
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| Publication Number | Publication Date |
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| CN103743522A CN103743522A (en) | 2014-04-23 |
| CN103743522B true CN103743522B (en) | 2016-02-03 |
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| CN201410038673.6A Active CN103743522B (en) | 2014-01-27 | 2014-01-27 | For the stiffness variable supporting structure of soft bearing balancing machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10520386B2 (en) | 2014-06-27 | 2019-12-31 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Vibration measurement device and method for high-speed rotating machines |
| CN108818506B (en) * | 2018-07-13 | 2020-12-08 | 哈尔滨工业大学（深圳） | Variable-rigidity module based on lever mechanism |
| CN114235283B (en) * | 2021-11-25 | 2024-05-07 | 苏州瑞威离心分离技术有限公司 | Hydraulic balance soft support dynamic balancing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202393562U (en) * | 2011-12-14 | 2012-08-22 | 上海市计量测试技术研究院 | Supporting type soft bearing and hard bearing integrated multifunctional dynamic balancing machine |
| CN202393560U (en) * | 2011-12-14 | 2012-08-22 | 上海市计量测试技术研究院 | Suspension type soft-hard bearing integrated multifunctional dynamic balancing machine |
| CN203719826U (en) * | 2014-01-27 | 2014-07-16 | 杭州集智机电股份有限公司 | Variable-rigidity support structure for flexible support balancing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001194257A (en) * | 2000-01-14 | 2001-07-19 | Denso Corp | Balance measuring instrument for rotating body and measuring method thereof |
| JP4145770B2 (en) * | 2003-10-20 | 2008-09-03 | 株式会社ミツトヨ | Balance testing machine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202393562U (en) * | 2011-12-14 | 2012-08-22 | 上海市计量测试技术研究院 | Supporting type soft bearing and hard bearing integrated multifunctional dynamic balancing machine |
| CN202393560U (en) * | 2011-12-14 | 2012-08-22 | 上海市计量测试技术研究院 | Suspension type soft-hard bearing integrated multifunctional dynamic balancing machine |
| CN203719826U (en) * | 2014-01-27 | 2014-07-16 | 杭州集智机电股份有限公司 | Variable-rigidity support structure for flexible support balancing machine |
Non-Patent Citations (1)
| Title |
|---|
| 立式硬支承动平衡机微机化测量系统的研究;钟沈江 等;《小型内燃机与摩托车》;20031231;第32卷(第3期);第8-10,23页 * |
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