CN103743522A - Rigidity-variable support structure for flexible support balancing machine - Google Patents
Rigidity-variable support structure for flexible support balancing machine Download PDFInfo
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- CN103743522A CN103743522A CN201410038673.6A CN201410038673A CN103743522A CN 103743522 A CN103743522 A CN 103743522A CN 201410038673 A CN201410038673 A CN 201410038673A CN 103743522 A CN103743522 A CN 103743522A
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Abstract
The invention discloses a rigidity-variable support structure for a flexible support balancing machine. A vibration body comprises a tested rotor, a rotary spindle, a bearing, a cylinder, a cylinder mounting plate and a concave block; the concave block is arranged at the upper side of the cylinder mounting plate; a base is supported on the cylinder mounting plate by plate springs at two sides; an L-shaped support plate is fixed on the base between the plate springs at two sides; a guide rail parallel with the plate spring is arranged at the top surface of the L-shaped support plate; the lower bottom surface of a bottom plate is connected onto the guide rail by a slider and moves along the guide rail; the upper top surface, close to one side of the cylinder mounting plate, of the bottom plate is provided with a roller bearing correspondingly connected with the concave block; the roller bearing can be clamped in the concave block; a cylinder is arranged at the lower part of the L-shaped support plate; a piston rod of the cylinder is fixedly connected with the slider at the lower bottom surface of the bottom plate. The piston rod of the cylinder is parallel with the plate springs. The rigidity-variable support structure for the flexible support balancing machine is simple in structure, effectively overcomes the resonance defect when the measuring rotary speed of the flexible support balancing machine achieves a critical point, and has very high reliability and test 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 class rotor, due to design, material skewness and manufacture the reasons such as mismachining tolerance, the rotation of its centroidal axis when working do not overlap, and this situation is called rotor and has amount of unbalance or unbalance.Rotor with excessive amount of unbalance can produce vibration, brings noise, shorten life of product, even bring danger when High Rotation Speed is worked, so rotor is assembled into the amount of unbalance that must eliminate induced vibration before complete machine, does transient equilibrium.
When rotor is done to transient equilibrium, first need to measure the initial unbalance, of rotor.At present, form the equilibrator for large quality disc-like rotor of product, take hard support pattern as main.Be compared to soft underprop mode, hard bearing balan requires the rigidity on support plinth and basis very large on the one hand, needs on the other hand the special vibration transducer amplifying circuit separated with signal that precision is very high.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 this two aspect, also there is the deficiency of self: in rotor lifting speed process, need to cross rotating speed critical point, must cause like this strenuous vibration of equilibrator, be i.e. resonance.Because the quality of tested rotor and measurement support unit is larger, resonance effect is more obvious, when serious, can damage physical construction, belt and drive motor etc.
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, resonance while effectively having avoided 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 piece, and cylindrical shell installing plate upside is provided with spill piece; Stiffness variable supporting structure comprises base, leaf spring, L shaped 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, L shaped back up pad is fixed on the base between the leaf spring of both sides, L shaped support plate top surface is provided with the guide rail that is parallel to leaf spring, base plate bottom surface is arranged on guide rail and along guide rail and is moved by slide block, base plate is provided with the roller bearing with the corresponding connection of spill piece near the upper end face of cylindrical shell installing plate one side, and roller bearing can snap in spill piece; L shaped 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.
Described roller bearing and to snap between the Baltimore groove of spill piece be interference fit.
The bottom land of described spill piece Baltimore groove is square, and notch is hydraucone, and width of rebate is greater than the external diameter of roller bearing, and bottom land 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 piece, and the polyurethane material generation deformation on roller bearing surface.
The hydraucone gradient of described spill piece Baltimore groove notch is 20～30 degree.
When the piston rod of described cylinder is released full stroke, roller bearing is stuck in spill piece Baltimore groove and rigidly connects tactile with bottom land.
The beneficial effect that the present invention has is:
1) simple in structure;
2) effectively overcome soft bearing balancing machine and measured 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 structure connection diagram of supporting structure of the present invention.
Fig. 3 is the structural representation of spill piece.
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 piece, 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 piece 6, cylindrical shell installing plate 4 upsides are provided with spill piece 6, stiffness variable supporting structure comprises base 9, leaf spring 5, L shaped 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, L shaped back up pad 14 is fixed on the base 9 between the leaf spring 5 of both sides, L shaped back up pad 14 end faces are provided with the guide rail 13 that is parallel to leaf spring 5, base plate 8 bottom surfaces are arranged on guide rail 13 and along guide rail and are moved by slide block 12, base plate 8 is provided with the roller bearing 7 with the corresponding connection of spill piece 6 near the upper end face of cylindrical shell installing plate 4 one sides, roller bearing 7 can snap in spill piece 6, L shaped back up pad 14 bottoms are provided with cylinder 11, and the piston rod of cylinder 11 is fixedly connected with the slide block 12 of base plate 8 bottom surfaces, and the piston rod of cylinder 11 is parallel with leaf spring 5.
Roller bearing 7 and to snap between the Baltimore groove of spill piece 6 be interference fit.
As shown in Figure 3, the bottom land of spill piece 6 Baltimore grooves is square, and notch is hydraucone, and width of rebate is greater than the external diameter of roller bearing 7, and bottom land width is less than the external diameter of roller bearing 7, is interference fit.
Roller bearing 7 surfaces are coated with polyurethane material, and roller bearing 7 is polyurethane cladded type roller bearing, when roller bearing 7 snaps in spill piece 6, and the polyurethane material generation deformation on roller bearing 7 surfaces.
The hydraucone of spill piece 6 Baltimore groove notches has constant slope, and gradient is 20～30 degree.
When the piston rod of cylinder 11 is released full stroke, roller bearing 7 is stuck in spill piece 6 Baltimore grooves and rigidly connects tactile with bottom land.
The vibrating mass being comprised of rotor, rotary main shaft and cylindrical shell is bearing in base by leaf spring, forms soft underprop.
At grade, fixing spill piece 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 piece 6, makes vibrating mass be bearing in base by means of large rigidity back up pad, increases its rigidity and becomes hard supporting; When amount of unbalance is measured, cylinder exits, and drives roller bearing separated with spill piece, recovers soft underprop.
During assembling, when cylinder 11 piston rods stretch out full stroke, roller bearing is just clamp-oned the bottom land of spill piece 6, and its object has two, and the one, prevent leaf spring 5 tensions, the 2nd, during vibrating mass motion, 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 piece 6, makes vibrating mass be bearing in base by means of large rigidity back up pad, increases its rigidity and becomes hard supporting; When tested rotor 1 is raised to, specify rotating speed to carry out amount of unbalance while measuring, cylinder 11 exits, and drives roller bearing 7 separated with spill piece 6, recovers soft underprop.Adopt this stiffness variable supporting structure, can effectively avoid the resonance of soft bearing balancing machine, greatly improved its reliability and testing efficiency.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, 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 piece (6), cylindrical shell installing plate (4) upside is provided with spill piece (6), it is characterized in that: stiffness variable supporting structure comprises base (9), leaf spring (5), L shaped 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, L shaped back up pad (14) is fixed on the base (9) between the leaf spring (5) of both sides, L shaped back up pad (14) end face is provided with the guide rail (13) that is parallel to leaf spring (5), base plate (8) bottom surface is arranged on guide rail (13) above and is moved along guide rail by slide block (12), the upper end face of close cylindrical shell installing plate (4) one sides of base plate (8) is provided with the roller bearing (7) with the corresponding connection of spill piece (6), roller bearing (7) can snap in spill piece (6), L shaped 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).
2. a kind of stiffness variable supporting structure for soft bearing balancing machine according to claim 1, is characterized in that: described roller bearing (7) and to snap between the Baltimore groove of spill piece (6) be interference fit.
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 piece (6) Baltimore groove is square, notch is hydraucone, width of rebate is greater than the external diameter of roller bearing (7), bottom land 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 is coated with polyurethane material, when roller bearing (7) snaps in spill piece (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 piece (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) is released full stroke, roller bearing (7) is stuck in and rigidly connects tactile with bottom land in spill piece (6) Baltimore groove.
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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| CN103743522A true CN103743522A (en) | 2014-04-23 |
| CN103743522B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687791A (en) * | 2014-06-27 | 2017-05-17 | 三菱重工发动机和增压器株式会社 | Vibration measurement device for high-speed rotating machine, and vibration measurement method |
| CN108818506A (en) * | 2018-07-13 | 2018-11-16 | 哈尔滨工业大学（深圳） | A kind of variation rigidity module based on lever mechanism |
| CN114235283A (en) * | 2021-11-25 | 2022-03-25 | 苏州瑞威离心分离技术有限公司 | Hydraulic balance soft support dynamic balancing machine |
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| JP2001194257A (en) * | 2000-01-14 | 2001-07-19 | Denso Corp | Balance measuring instrument for rotating body and measuring method thereof |
| JP2005121578A (en) * | 2003-10-20 | 2005-05-12 | Akashi Corp | 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 |
| 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 |
| 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 |
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2014
- 2014-01-27 CN CN201410038673.6A patent/CN103743522B/en active Active
Patent Citations (5)
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| JP2001194257A (en) * | 2000-01-14 | 2001-07-19 | Denso Corp | Balance measuring instrument for rotating body and measuring method thereof |
| JP2005121578A (en) * | 2003-10-20 | 2005-05-12 | Akashi Corp | 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 |
| 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 |
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| 钟沈江 等: "立式硬支承动平衡机微机化测量系统的研究", 《小型内燃机与摩托车》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106687791A (en) * | 2014-06-27 | 2017-05-17 | 三菱重工发动机和增压器株式会社 | Vibration measurement device for high-speed rotating machine, and vibration measurement method |
| US10520386B2 (en) | 2014-06-27 | 2019-12-31 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Vibration measurement device and method for high-speed rotating machines |
| CN108818506A (en) * | 2018-07-13 | 2018-11-16 | 哈尔滨工业大学（深圳） | A kind of variation rigidity module based on lever mechanism |
| CN108818506B (en) * | 2018-07-13 | 2020-12-08 | 哈尔滨工业大学（深圳） | Variable-rigidity module based on lever mechanism |
| CN114235283A (en) * | 2021-11-25 | 2022-03-25 | 苏州瑞威离心分离技术有限公司 | Hydraulic balance soft support dynamic balancing machine |
| 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 |
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| CN103743522B (en) | 2016-02-03 |
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