CN1894572A - Pivotally supporting device for correcting balance of rotating body - Google Patents

Abstract

A pivotally supporting device of a balance correcting device measuring an unbalance force, comprising a journal pivoting part having a mandrel pivotally supporting a rotating body around a vertical axis, wherein a thrust pivoting part pivotally supporting the bottom part of the rotating body is installed at the bottom part of the mandrel, a first fluid supply passage for supplying a fluid for floating is formed between the mandrel and the rotatably pivoting hole of the rotating body, and an annular groove and a second fluid supply passage for supplying the fluid for floating the rotating body by allowing the second fluid passage to communicate with the annular groove are formed in the thrust pivoting part opposed to the bottom part of the rotating body. A pivotally supporting device for balance correction measuring the unbalance force, comprising a journal pivoting part having a mandrel rotatably pivoting the rotating body around a vertical axis in a floated state, wherein a thrust pivoting part pivotally supporting the bottom part of the rotating body is installed in a floated state at the bottom part of the mandrel, a fluid supply passage for supplying a non-compressive fluid for floating is formed between the mandrel and the rotatably pivoting hole of the rotating body, and a space part for widening those other than the pivoting part is formed in at least either of the mandrel and the rotatably pivoting hole.

Description

The supporting device for correcting balance of rotary body

Technical field

The present invention relates to the supporting device for correcting balance of rotary body, can carry out the balance correction accurately at the come-up heavier rotary body of state lower support by fluid.

Background technology

Rotary body, the wheel of the impeller of the impeller of turbine, compressor, flywheel, automobile etc. etc. for example, the imbalance that the tolerance when tolerance when making in order to eliminate or assembling etc. causes is usually with monomer rotation rotary body, measure amount of unbalance, revise the balance correction of amount of unbalance.

Balance revised law for such rotary body, a kind of balance test machine as the balance correcting device has been proposed in patent documentation 1, even the rotary body of unequipped intrinsic support, when the balance correction, needn't use auxiliary turning axle or asessory shaft also can make the rotary body rotation and revise.

Patent documentation 1: special fair 4-40650 communique

In this balance test machine 1, shown in Figure 1A, Figure 1B, on device pallet 2,, on this vibration bridge 4, vertically fixing the bearing journal 5 that is used to support as axle by support spring 3 supporting vibration bridges 4.

On the central part of this bearing journal 5, form the fluid supply hole 6 that has sealed the upper end, radial direction plane up and down is provided with the tap hole 7 of a plurality of radial directions, these holes 7 are connected with this fluid supply hole 6, and compressible fluids such as air are supplied to and flow out.

In addition, the rectangular shape in the bottom of this bearing journal 5 be wholely set plate 8, on this plate 8, form a plurality of secondary holes 9 and in upper surface open, the ring-type stream 10 by inside is communicated with, compressible fluids such as air are supplied to and flow out.

In this balance test machine 1, with pack into the hole 12 of rotary body 11 of bearing journal 5, compressible fluids such as air are flowed out from tap hole 7 and secondary hole 9, under the come-up state, support thus, by being rotated along the bearing journal 5 that under this state, is fixed, thereby instrumentation passes to the out-of-balance force of vibration bridge 4, to carry out balance test.

In this balance test machine, for rotary body 11 is stably rotated along bearing journal 5, must make the gap of the gap (float-amount) of plate 8 and rotary body 11 greater than the hole 12 of bearing journal 5 and rotary body 11, otherwise then the bottom surface 13 with rotary body 11 is that benchmark is rotated, and just can not measure required amount of unbalance.

Therefore, when the pressure distribution that produces the compressible fluids such as air between bottom surface 13 this buoyancy, that act on rotary body 11 and the plate 8 is observed, at first in order to oversimplify, the situation that does not have effluent fluid with the graphical presentation of Fig. 2 center from secondary hole 9, when the float-amount of rotary body 11 hour, with compare with the formed area A in the gap in hole 12 by bearing journal 5, the formed area B in gap of the bottom surface 13 of plate 8 and rotary body 11 is less, inlet portion from this area A towards area B becomes nozzle, owing to causing that violent expansion produces negative pressure portion 14.

For this reason, owing to the sucking action of negative pressure portion 14 rotary body 11 is fully floated, so as shown in the chart of the below of Fig. 2, when the supply pressure that makes air rises, compare the moment that diminishes with area B in area A, the state that negative pressure portion 14 represents from dotted line is eliminated the state for representing with solid line sharp, and buoyancy increases rapidly, so rotary body 11 flies up.

In addition, under the situation about flowing out in the secondary hole 9 that makes on the slave plate 8 such as air, Fig. 2 below chart in, shown in the single-point line, as if the pressure between the bottom surface 13 of increasing plate 8 and rotary body 11, though then can increase buoyancy, yet but there is following problem, promptly the air that flows out from secondary hole 9 is easy to flow towards the periphery of the less plate 8 of resistance, so the outer circumferential side in secondary hole 9 produces negative pressure portion 14, thereby in heavier rotary body 11 and bigger rotary body 11, can not guarantee the gap that forms by sufficient buoyancy.

On the other hand, in order not produce nozzle effect, and consider to adopt the incompressible fluid that lubricates wet goods liquid to come the compressible fluid of gases such as replaces air, therefore, though the weight of easy rotating body for supporting 11, but compare with the compressible fluid of gases such as air, because viscosity and surface tension are bigger, so full of liquid in the close clearance of bearing journal 5 and rotary body 12, thereby the rotational resistance change is big, needs bigger revolving force for obtaining necessary balance correction rotation number, for example at Figure 1A, Figure 1B, can produce following problem in the structure of Fig. 2, the fluid force that promptly is used to rotate driving is excessive, and rotary body 11 is easy to off-centre with respect to bearing journal 5.

Summary of the invention

The present invention puts forward in view of prior art problems point just, a kind of supporting device for correcting balance of rotary body is provided, use compressible fluid or incompressible fluid, even have the rotary body of weight, also can be under the come-up state stable support and make its rotation.

In order to solve above-mentioned problem, the supporting device for correcting balance of the solution of the present invention 1 described rotary body, be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, it is characterized in that, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, be provided with the 1st fluid that the fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road, be provided with endless groove with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body, and, be provided with the 2nd fluid and supply with the road, the 2nd fluid is supplied with the road and is communicated with this endless groove, supplies with the fluid of rotary body come-up usefulness.

Supporting device for correcting balance according to this rotary body, be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting also makes in the fulcrum arrangement that the balance correction of its rotation uses, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, be provided with the 1st fluid that the fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road, be provided with endless groove with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body, supply with the road but also be provided with the 2nd fluid, the 2nd fluid is supplied with the road and is communicated to this endless groove, supply with the fluid of rotary body come-up usefulness, with journal rest portion and thrust bearing part rotating body for supporting separately, the endless groove of fluid from be arranged on thrust bearing part flowed out, thereby make the inboard of endless groove also be full of fluid fully, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, along the stable rotation of journal rest portion.

In addition, on the basis of scheme 1 described structure, the supporting device for correcting balance of the solution of the present invention 2 described rotary bodies is characterised in that, under the come-up state of above-mentioned rotary body, the peripheral part of above-mentioned thrust bearing part or above-mentioned rotary body is provided with ring-shaped protrusion to substitute above-mentioned endless groove, this ring-shaped protrusion forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and thrust bearing part, and is provided with above-mentioned the 2nd fluid supply road in above-mentioned thrust bearing part upper shed.

Supporting device for correcting balance according to this rotary body, under the come-up state of above-mentioned rotary body, the peripheral part of above-mentioned thrust bearing part or above-mentioned rotary body is provided with ring-shaped protrusion to substitute above-mentioned endless groove, this ring-shaped protrusion forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and thrust bearing part, and be provided with above-mentioned the 2nd fluid in above-mentioned thrust bearing part upper shed and supply with the road, thereby, ring-shaped protrusion is set to form little gap on the peripheral part of above-mentioned thrust bearing part or above-mentioned rotary body, can prevent that thus the fluid that supplies to thrust bearing part from the 2nd fluid supply road from flowing out towards peripheral part, thereby fully be full of fluid, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, along the stable rotation of journal rest portion.

And, on the basis of scheme 1 described structure, the supporting device for correcting balance of the solution of the present invention 3 described rotary bodies is characterised in that, substitute above-mentioned endless groove, under the come-up state of above-mentioned rotary body, arbitrary face in the opposed faces of above-mentioned thrust bearing part and above-mentioned rotary body is provided with the restriction of ring-type, and the restriction of this ring-type forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and above-mentioned thrust bearing part.

Supporting device for correcting balance according to this rotary body, substitute above-mentioned endless groove, under the come-up state of above-mentioned rotary body, arbitrary face in the opposed faces of above-mentioned thrust bearing part and above-mentioned rotary body is provided with the restriction of ring-type, and the restriction of this ring-type forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and above-mentioned thrust bearing part.By the restriction of ring-type is set on arbitrary in the opposed faces of thrust bearing part and rotary body, to form less clearance, thereby the interior all sides in restriction are guaranteed relatively large gap, can prevent that fluid from flowing out towards peripheral part, make fully to be full of fluid in the thrust bearing part,, also can support its weight and make its come-up even the rotary body of constant weight is arranged, guarantee sufficient float-amount, along the stable rotation of journal rest portion.

In addition, on the basis of scheme 3 described structures, the supporting device for correcting balance of the solution of the present invention 4 described rotary bodies is characterised in that, is provided with above-mentioned restriction, and is provided with above-mentioned the 2nd fluid supply road in above-mentioned thrust bearing part upper shed.

Supporting device for correcting balance according to this rotary body, both be provided with above-mentioned restriction, and be provided with above-mentioned the 2nd fluid in above-mentioned thrust bearing part upper shed and supply with the road, thus, interior all side supply fluids of restriction by supply with road direction from the 2nd fluid, can prevent outflow towards peripheral part, and make that more reliably sufficient fluid is filled in thrust bearing part, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, along the stable rotation of journal rest portion.

And, in scheme 1 described structure, the supporting device for correcting balance of the solution of the present invention 5 described rotary bodies is characterised in that, above-mentioned the 2nd fluid supply road that is opened on above-mentioned thrust bearing part is provided with a plurality of openings to substitute above-mentioned endless groove, and these openings are arranged to distance between the open centre of adjacency less than the distance from each open centre to the periphery open end.

Supporting device for correcting balance according to this rotary body, above-mentioned the 2nd fluid supply road that is opened on above-mentioned thrust bearing part is provided with a plurality of openings to substitute above-mentioned endless groove, and, these openings are arranged to distance between the open centre of adjacency less than the distance from each open centre to the periphery open end, thus, configuration by 2nd fluid flowing path of opening on thrust bearing part, can increase flow path resistance towards outer circumferential side, suppression fluid flows out towards peripheral part, make fluid fully riddle thrust bearing part,, also can support its weight and make its come-up even the rotary body of constant weight is arranged, guarantee sufficient float-amount, along the stable rotation of journal rest portion.

In addition, in scheme 1～5 in each described structure, the supporting device for correcting balance of the solution of the present invention 6 described rotary bodies is characterised in that, can supply with road and/or above-mentioned the 2nd fluid and supplies with fluid in the road and switch to compressible fluid and incompressible fluid to supply with supplying to above-mentioned the 1st fluid.

Supporting device for correcting balance according to this rotary body, can supply with road and/or above-mentioned the 2nd fluid and supply with fluid in the road and be switching to compressible fluid and incompressible fluid supplying to above-mentioned the 1st fluid to supply with, thus, by using lubricated wet goods incompressible fluid so that rotary body floats, compressible fluid such as air supply then can limit the use amount of lubricating oil and blows off attached to the lubricating oil on the rotary body.In addition,, also same axle can be used, thereby the float-amount corresponding can be guaranteed with the characteristic of compressible fluid and incompressible fluid even for the rotary body that varies in weight.

In addition, in order to solve above-mentioned problem, the supporting device for correcting balance of the solution of the present invention 7 described rotary bodies is arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, it is characterized in that, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, on the other hand, be provided with the fluid that the incompressible fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road, the spatial portion in the space beyond being provided with in any one at least of above-mentioned axle and above-mentioned swivel bearing hole enlarges support.

Supporting device for correcting balance according to this rotary body, be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, on the other hand, be provided with the fluid that the incompressible fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road, and, the spatial portion in the space beyond being provided with in any one at least of above-mentioned axle and above-mentioned swivel bearing hole enlarges support, thus, with journal rest portion and thrust bearing part rotating body for supporting separately, make incompressible fluid flow out to thrust bearing part from fluid supply road, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, spatial portion is set beyond the support of journal rest portion, make the incompressible fluid of supplying with from fluid supply road only act on the support that need be used to support, thereby can guarantee float-amount, but also can improve the rigidity of locating in journal rest portion, prevent eccentric with stable rotation.

And, on the basis of scheme 7 described structures, the supporting device for correcting balance of the solution of the present invention 8 described rotary bodies is characterised in that, with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body on, the 2nd fluid that is provided with the incompressible fluid of supplying with rotary body come-up usefulness is supplied with the road.

Supporting device for correcting balance according to this rotary body, the 2nd fluid that is provided with the incompressible fluid of supplying with rotary body come-up usefulness with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body is supplied with the road, thus, can more reliably incompressible fluid be supplied to thrust bearing part, raising prevents eccentric with stable rotation in the rigidity at journal rest portion place.

In addition, on the basis of scheme 7 or 8 described structures, the supporting device for correcting balance of the solution of the present invention 9 described rotary bodies is characterised in that, is provided with the discharge road that is communicated with and discharges inner incompressible fluid with above-mentioned spatial portion.

Supporting device for correcting balance according to this rotary body, be provided with the discharge road that is communicated with and discharges inner incompressible fluid with above-mentioned spatial portion, thus, by discharging the incompressible fluid of spatial portion from discharging the road, can make the support that incompressible fluid only acts on needs supporting, raising prevents eccentric with stable rotation in the rigidity at journal rest portion place.

In scheme 7～9 on the basis of each described structure, the supporting device for correcting balance of the solution of the present invention 10 described rotary bodies is characterised in that, be provided with the 2nd and discharge the road, the 2nd discharge the road above the support that leans on most between above-mentioned axle and the above-mentioned swivel bearing hole opening to discharge incompressible fluid.

Supporting device for correcting balance according to this rotary body, be provided with the 2nd and discharge the road, the 2nd discharge the road above the support that leans on most between above-mentioned axle and the above-mentioned swivel bearing hole opening to discharge incompressible fluid, thus, the incompressible fluid of top that flows out to the support of topmost also can be discharged the road from the 2nd and be discharged, even the swivel bearing hole of rotary body is for being with under the non-through situation of bottom outlet, also can discharge incompressible fluid, under situation about connecting, can prevent to splash and leak to carry out the balance correction.

In addition, on the basis of scheme 9 or 10 described structures, the supporting device for correcting balance of the solution of the present invention 11 described rotary bodies is characterised in that, is provided with output mechanism, and this output mechanism forcibly makes incompressible fluid be discharged to above-mentioned discharge road and/or above-mentioned the 2nd discharge road.

Supporting device for correcting balance according to this rotary body, be provided with output mechanism, this output mechanism forcibly makes incompressible fluid be discharged to above-mentioned discharge road and/or above-mentioned the 2nd discharge road, thus, by on discharge road or the 2nd discharge road, output mechanism being set with mandatory discharge incompressible fluid, only supply to necessary part and support, can prevent to splash and leak to carry out the balance correction.

And then, in scheme 7～11 on the basis of each described structure, the supporting device for correcting balance of the solution of the present invention 12 described rotary bodies is characterised in that, is provided with the recovering mechanism that reclaims incompressible fluid opposed to each other with the periphery of above-mentioned thrust bearing part.

Supporting device for correcting balance according to this rotary body, be provided with the recovering mechanism that reclaims incompressible fluid opposed to each other with the periphery of above-mentioned thrust bearing part, thus, can retrieve incompressible fluid, can prevent to splash and leak to carry out the balance correction by recovering mechanism from thrust bearing part.

In addition, in scheme 7～12 on the basis of each described structure, the supporting device for correcting balance of the solution of the present invention 13 described rotary bodies is characterised in that, is provided with the jut of the ring-type that keeps incompressible fluid between above-mentioned thrust bearing part and above-mentioned rotary body.

Supporting device for correcting balance according to this rotary body, be provided with the jut that incompressible fluid is remained on the ring-type between above-mentioned thrust bearing part and the above-mentioned rotary body, thus, can more reliably incompressible fluid be remained on thrust bearing part, even the rotary body of constant weight is arranged, also can make its come-up, thereby carry out the balance correction.

And in scheme 7～13 on the basis of each described structure, the supporting device for correcting balance of the solution of the present invention 14 described rotary bodies is characterised in that, the leading section that the above-mentioned fluid of above-mentioned journal rest portion is supplied with the road is provided with endless groove.

Supporting device for correcting balance according to this rotary body, the leading section that the above-mentioned fluid of above-mentioned journal rest portion is supplied with the road is provided with endless groove, thus, can make incompressible fluid flow out on the complete cycle of journal rest portion from endless groove, prevent situations such as off-centre more reliably, rotate to carry out the balance correction along journal rest portion.

In sum, supporting device for correcting balance according to the solution of the present invention 1 described rotary body, be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, be provided with the 1st fluid that the fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road, be provided with endless groove with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body, and, be provided with the 2nd fluid and supply with the road, the 2nd fluid is supplied with the road and is communicated with this endless groove, supply with the fluid of rotary body come-up usefulness, so, with journal rest portion and thrust bearing part rotating body for supporting separately, fluid is flowed out from the endless groove that is arranged on the thrust bearing part, make interior all sides of endless groove fully be full of fluid, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, rotate to carry out the balance correction along journal rest portion is stable.

In addition, supporting device for correcting balance according to the solution of the present invention 2 described rotary bodies, the peripheral part of above-mentioned thrust bearing part or above-mentioned rotary body is provided with ring-shaped protrusion to substitute above-mentioned endless groove, this ring-shaped protrusion forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and thrust bearing part, supply with the road but also be provided with above-mentioned the 2nd fluid, the 2nd fluid is supplied with the road opening on above-mentioned thrust bearing part, so, the jut that ring-type can be set on the peripheral part of thrust bearing part or rotary body is to form less clearance, thereby can prevent that the fluid that supplies to thrust bearing part from the 2nd fluid supply road from flowing out towards peripheral part, can fully be full of fluid, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, rotate to carry out the balance correction along journal rest portion is stable.

And, supporting device for correcting balance according to the solution of the present invention 3 described rotary bodies, substitute above-mentioned endless groove, arbitrary face in the opposed faces of above-mentioned thrust bearing part and above-mentioned rotary body is provided with the restriction of ring-type, the restriction of this ring-type forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and above-mentioned thrust bearing part, so, by with the opposed faces of thrust bearing part and rotary body in arbitrary on the restriction of ring-type is set to form less clearance, can guarantee relatively large gap in interior all sides of restriction, suppression fluid flows out towards peripheral part, make fluid fully be filled in thrust bearing part, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, rotate to carry out the balance correction along journal rest portion is stable.

In addition, supporting device for correcting balance according to the solution of the present invention 4 described rotary bodies, both be provided with above-mentioned restriction, also be provided with above-mentioned the 2nd fluid and supply with the road, the 2nd fluid is supplied with the road opening on above-mentioned thrust bearing part, so, interior all side supply fluids of restriction by supply with road direction from the 2nd fluid, both can prevent outflow towards peripheral part, sufficient fluid is filled in the thrust bearing part, even thereby the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, rotate to carry out the balance correction along journal rest portion is stable.

And, supporting device for correcting balance according to the solution of the present invention 5 described rotary bodies, above-mentioned the 2nd fluid supply road that is opened on above-mentioned thrust bearing part is provided with a plurality of openings to substitute above-mentioned endless groove, these openings are arranged to distance between the open centre of adjacency less than the distance from each open centre to the periphery open end, so, configuration by 2nd fluid flowing path of opening on thrust bearing part, increase is towards the flow path resistance of outer circumferential side, suppression fluid flows out towards peripheral part, so just can make fluid fully be filled in thrust bearing part, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, guarantee sufficient float-amount, rotate to carry out the balance correction along journal rest portion is stable.

In addition, supporting device for correcting balance according to the solution of the present invention 6 described rotary bodies, can supply with road and/or above-mentioned the 2nd fluid and supply with fluid in the road and be switching to compressible fluid and incompressible fluid supplying to above-mentioned the 1st fluid to supply with, so, use lubricated wet goods incompressible fluid so that the rotary body come-up, compressible fluid such as air supply then can limit the use amount of lubricating oil like this and blows off attached to the lubricating oil on the rotary body to clean.In addition, even the rotary body that varies in weight also can use identical axle, can guarantee and the corresponding float-amount of the characteristic of compressible fluid and incompressible fluid.

Supporting device for correcting balance according to the solution of the present invention 7 described rotary bodies, be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, on the other hand, be provided with the fluid that the incompressible fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road, but also the spatial portion in the space beyond being provided with in any one at least of above-mentioned axle and above-mentioned swivel bearing hole enlarges support, so, with journal rest portion and thrust bearing part rotating body for supporting separately, make incompressible fluid flow out to thrust bearing part from fluid supply road, even the rotary body of constant weight is arranged, also can support its weight and make its come-up, spatial portion is set beyond the support of journal rest portion, make the incompressible fluid of supplying with from fluid supply road only act on the support that need be used to support, thereby can guarantee sufficient float-amount, but also can improve the rigidity of locating in journal rest portion, prevent eccentric with stable rotation.

And, supporting device for correcting balance according to the solution of the present invention 8 described rotary bodies, be provided with the 2nd fluid with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body and supply with the road, the 2nd fluid is supplied with the incompressible fluid that rotary body come-up usefulness is supplied with on the road, so, can more reliably incompressible fluid be supplied to thrust bearing part, can improve rigidity, prevent off-centre and stablize rotation at journal rest portion place.

In addition, supporting device for correcting balance according to the solution of the present invention 9 described rotary bodies, be provided with the discharge road of discharging inner incompressible fluid, this discharge road is communicated to above-mentioned spatial portion, so,, just can make incompressible fluid further act on the support that need be used to support by discharging the incompressible fluid of spatial portion from discharging the road, can improve rigidity, prevent off-centre and stablize rotation at journal rest portion place.

And, supporting device for correcting balance according to the solution of the present invention 10 described rotary bodies, be provided with the 2nd discharge road of discharging incompressible fluid, the 2nd discharges the road opening above the support that leans on most between above-mentioned axle and the above-mentioned swivel bearing hole, so, the incompressible fluid that flows out to the top of leaning on last support is most also discharged the road discharge from the 2nd, even under the non-through situation in hole of the swivel bearing hole of rotary body for the band end, also can discharge incompressible fluid, under situation about connecting, can prevent to splash and leak and carry out the balance correction.

In addition, supporting device for correcting balance according to the solution of the present invention 11 described rotary bodies, be provided with output mechanism, this output mechanism forcibly makes incompressible fluid be discharged in above-mentioned discharge road and/or above-mentioned the 2nd discharge road, so, by discharging on the road and the 2nd output mechanism is set discharging road and the 2nd with mandatory discharge incompressible fluid, only supply to necessary part to support, can prevent to splash and leak and carry out the balance correction.

And, supporting device for correcting balance according to the solution of the present invention 12 described rotary bodies, be provided with recovering mechanism, the periphery of this recovering mechanism and above-mentioned thrust bearing part is opposed, reclaim incompressible fluid, so can reclaim incompressible fluid by recovering mechanism, can prevent to splash and leak and carry out the balance correction from thrust bearing part.

In addition, supporting device for correcting balance according to the solution of the present invention 13 described rotary bodies, between above-mentioned thrust bearing part and above-mentioned rotary body, be provided with the ring-shaped protrusion that keeps incompressible fluid, so, can more reliably incompressible fluid be remained in the thrust bearing part, even the rotary body of constant weight is arranged, also can make its come-up really, carry out the balance correction.

And, supporting device for correcting balance according to the solution of the present invention 14 described rotary bodies, the leading section of supplying with the road at above-mentioned the 2nd fluid of above-mentioned journal rest portion is provided with endless groove, so, can make incompressible fluid flow out on the complete cycle of journal rest portion from endless groove, prevent situations such as off-centre, it is rotated to carry out the balance correction along journal rest portion.

Other purpose of the present invention and favourable feature just can be understood according to the following explanation with reference to accompanying drawing.

Description of drawings

Figure 1A is that the partial sectional view of balancer of existing rotary body and Y-Y are to view.

Figure 1B is that the partial sectional view of balancer of existing rotary body and Y-Y are to view.

Fig. 2 is the key diagram of the pressure distribution in the balancer of existing rotary body.

Fig. 3 removes the brief configuration figure that the part of an embodiment of the supporting device for correcting balance of rotary body of the present invention is represented.

Among Fig. 4, part in the top of Fig. 4 relates to an embodiment of the supporting device for correcting balance of rotary body of the present invention, be X-X among Fig. 3 to view, partly be local amplification view in the centre of Fig. 4, Fig. 4 below part be the key diagram of pressure distribution.

Fig. 5 is the local amplification view of other embodiment of the supporting device for correcting balance of rotary body of the present invention.

Fig. 6 is the local amplification view of another embodiment of the supporting device for correcting balance of rotary body of the present invention.

Fig. 7 is the local amplification plan view of other embodiment of the supporting device for correcting balance of rotary body of the present invention.

Fig. 8 removes the brief configuration figure that the part of an embodiment of the supporting device for correcting balance of rotary body of the present invention is represented.

Fig. 9 is the local amplification view of an embodiment of the supporting device for correcting balance of rotary body of the present invention.

Figure 10 be rotary body of the present invention supporting device for correcting balance other embodiment about half one represent the local amplification view of different modes respectively.

Figure 11 is the local amplification view of another embodiment of the supporting device for correcting balance of rotary body of the present invention.

Embodiment

Below, with reference to the accompanying drawings embodiments of the present invention are elaborated.

Fig. 3 and Fig. 4 relate to an embodiment of the supporting device for correcting balance of rotary body of the present invention, Fig. 3 removes the brief configuration figure of a part to represent, the part of the top of Fig. 4 is that X-X among Fig. 3 is to view, the Centromedian part of Fig. 4 is local amplification view, and the part of below of Fig. 4 is the key diagram of pressure distribution.

The supporting device for correcting balance 20 of this rotary body (being designated hereinafter simply as fulcrum arrangement 20), be a kind of being arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, for example, be provided with by the bearing journal 5 set on the vibration bridge 4 that substitutes the balance correcting device 1 that in Figure 1A and Figure 1B, has illustrated and the mode of plate 8, even heavier or bigger rotary body also can make its rotation at come-up state lower support rotary body 11.

This fulcrum arrangement 20 is provided with journal rest portion 22, it is included under the come-up state can be around the Z-axis axle 21 of rotating body for supporting 11 rotatably, be wholely set discoid plate 24 in the bottom of this axle 21, this plate 24 constitutes the thrust bearing part 23 with the bottom 13 of come-up state support rotary body 11, and this plate 24 is fixed on the vibration bridge 4.

In this fulcrum arrangement 20, thereby be installed in the journal rest portion 22 that to support this rotary body 11 on the axle 21 around Z-axis rotatably as swivel bearing hole 12 with rotary body 11, the 1st fluid is supplied with road 27 and comprised: center stream 25 supplies to the fluid of come-up usefulness the central part of axle 21; A plurality of tap holes 26 are arranged on the surface level at 2 places up and down of this center stream 25, in the peripheral openings of axle 21.

Supply with in the road 27 at the 1st fluid,, for example supply with pressurized air, supply with from the bottom of center stream 25 as fluid.

Thereby, the pressurized air that supplies in the 1st fluid supply road 27 is flowed out from tap hole 26 via center stream 25, thereby during the collar between the swivel bearing hole 12 that supplies to axle 21 and rotary body 11, become following state: by compressed-air actuated pressure, make rotary body 11 across minim gap and with axle 21 non-contacting states under can be supported rotatably around Z-axis.

And, in this fulcrum arrangement 20, for at thrust direction rotating body for supporting 11, not only with the outer peripheral edges of the plate 24 of the bottom 13 opposed thrust bearing parts 23 of rotary body 11 near endless groove 28 is set, supply with road 29 but also be provided with the 2nd fluid, the 2nd fluid is supplied with road 29 endless groove 28 connections therewith, supplies with the fluid of rotary body come-up usefulness.

Supply with in the road 29 at the 2nd fluid,, for example supply with pressurized air as fluid.In addition, as shown shown in the example, the 2nd fluid is supplied with the place that road 29 is not limited to be arranged on endless groove 28, can on circumference many places be set so that supply with fluid, and preferred situation is that the uniform pressure of respectively sentencing at endless groove 28 flows out fluid.

In the fulcrum arrangement 20 that constitutes in this wise, rotary body 11 is installed as follows, promptly packed on the axle 21 of journal rest portion 22 in the swivel bearing hole 12 of rotary body 11.

And, to supply to the 1st fluid as the pressurized air of fluid supplies with in the road 27, fluid is flowed out via the tap hole up and down 26 of center stream 25 from axle 21, thereby with respect to the axle 21 of stationary state, in the swivel bearing portion 12 of come-up state lower support rotary body 11.

Equally, the 2nd fluid that will supply to thrust bearing part 23 as the pressurized air of fluid is supplied with road 29, fluid is flowed out from the endless groove 28 of the upper surface that is opened on plate 24, between the bottom 13 of the upper surface of plate 24 and rotary body 11, keep pressurized air, thereby at come-up state lower support rotary body 11.

Under this state, pass through rotation rotary body 11, thereby but instrumentation passes to the out-of-balance force of vibration bridge 4, carry out balance test.

In such fulcrum arrangement 20, pressure distribution when having used compressible fluid is shown in the part of the below of Fig. 4, owing to be formed with the endless groove 28 of opening on the peripheral part of the plate 24 of thrust bearing part 23, make fluid flow out between the bottom 13 and plate 24 of rotary body 11 from this endless groove 28, so the fluid that keeps the fluid that flows out from the inner peripheral of endless groove 28 and flow out in interior all side of endless groove 28, thereby can guarantee to make the required pressure of rotary body 11 come-ups from the tap hole 26 of journal rest portion 22.

And flow out to the compressible fluid at the outer circumferential side place of endless groove 28, owing to the nozzle effect at the outer circumference end place of plate 24 expands, only in a fraction of zone, produce negative pressure portion 14, but, also very little with the bottom 13 opposed areas of rotary body 11, can be affected hardly, even the rotary body 11 of constant weight is arranged, also can make its come-up, gap the earth come-up than the swivel bearing portion 12 of the axle 21 of journal rest portion 22 and rotary body 11, thereby can make rotary body 11, but the normal amount of unbalance of instrumentation along axle 21 rotations.

Promptly, in this fulcrum arrangement 20, with the fluid of supplying with road 27 inflows from the 1st fluid and the fluid of supplying with endless groove 28 outflows on road 29 from the 2nd fluid, fluid is remained between the bottom 13 of the plate 24 of thrust bearing part 23 and rotary body 11, guarantee its pressure, even, also can guarantee sufficient float-amount for rotary body 11 with constant weight.

Thus, prevent that the bottom 13 with rotary body 11 from being that benchmark rotates on plate 24, under the state consistent with sufficient precision of the geometry axle center of the swivel bearing portion 12 that makes rotary body 11 and the periphery of axle 21, rotation rotary body 11 can obtain correct balance correction precision.

Next, according to Fig. 5 other embodiment of the present invention is described.

In this fulcrum arrangement 30, in order between the bottom 13 of the plate 24 of thrust bearing part 23 and rotary body 11, to keep fluid to guarantee its pressure, thereby form cyclic lug 31 to substitute endless groove, this cyclic lug 31 is as the dike of giving prominence to towards the peripheral part of plate 24 from the bottom 13 of rotary body 11, gap 32 between the peripheral part of this teat 31 and plate 24 is reduced, prevent that thus the peripheral end of fluid slave plate 24 from flowing out.

In this fulcrum arrangement 30, be provided with the 2nd fluid in the upper surface upper shed of plate 24 and supply with road 29, thereby fluid is flowed out between the bottom 13 of plate 24 and rotary body 11.

In addition, other structure of this fulcrum arrangement 30 is identical with the fulcrum arrangement 20 that has illustrated.

According to the fulcrum arrangement 30 that constitutes in this wise, making fluid supply with road 29 from the 2nd fluid flows out between the bottom 13 and plate 24 of rotary body 11, the less clearance 32 of jut 31 that the fluid of this outflow is become the dike of ring-type keeps, and also be maintained between the bottom 13 and plate 24 of rotary body 11 from the fluid that the tap hole 26 of journal rest portion 22 flows out, can guarantee to make the required pressure of rotary body 11 come-ups.

In addition, when the fluid that flows out from journal rest portion 22 is under the situation of air, when pressurized air flow in the gap of plate 24 before rotary body 11 come-up, though generation nozzle effect, but this gap can be blocked by ring-shaped protrusion 31, negative pressure took place in the quite short time, can have influence on the come-up of rotary body 11 hardly, and, even the outer circumference end at plate 24 also produces negative pressure owing to nozzle effect, but also very little, thereby can be subjected to its influence hardly with the bottom 13 opposed areas of rotary body 11.

Thereby, even have the rotary body 11 of constant weight, also can make its come-up, the gap the earth come-up than the swivel bearing portion 12 of the axle 21 of journal rest portion 22 and rotary body 11 can make rotary body 11 along axle 21 rotations, but the normal amount of unbalance of instrumentation.

Below, describe for the fulcrum arrangement 40 of another embodiment shown in Fig. 6.

In this fulcrum arrangement 40, in order between the bottom 13 of the plate 24 of thrust bearing part 23 and rotary body 11, to keep fluid to guarantee this pressure, thereby form ring-type restriction 41 to substitute endless groove, the periphery upper surface of these ring-type restriction 41 slave plates 24 is outstanding towards the bottom 13 of rotary body 11, reduce the gap 42 between the bottom 13 of this restriction 41 and rotary body 11, the peripheral end that not only can prevent fluid slave plate 24 thus flows out, and, compare with the gap 42 of restriction 41 and can guarantee bigger gap in interior all sides of restriction 41.

And, in this fulcrum arrangement 40, be provided with the 2nd fluid in the upper surface open of plate 24 and supply with road 29, fluid is flowed out between the bottom 13 of plate 24 and rotary body 11, but also can omit and need not supply with road 29 from the 2nd fluid and supply with fluids.

In addition, other structure of this fulcrum arrangement 40 is identical with the fulcrum arrangement 20 that has illustrated.According to the fulcrum arrangement 40 that constitutes in this wise, making fluid supply with road 29 from the 2nd fluid flows out between the bottom 13 and plate 24 of rotary body 11, the fluid of this outflow is kept by the less clearance 42 of the restriction 41 of ring-type, and also be maintained between the bottom 13 and plate 24 of rotary body 11, thereby can guarantee to make the required pressure of rotary body 11 come-ups from the fluid that the tap hole 26 of journal rest portion 22 flows out.

In addition, when the fluid that flows out from journal rest portion 22 is under the situation of air, though pressurized air flow in the gap of plate 24 and the generation nozzle effect before rotary body 11 come-up, but this gap can be blocked by ring-type restriction 41, negative pressure took place in the quite short time, can have influence on the come-up of rotary body 11 hardly, and, even outer circumference end at plate 24, though restriction 41 formed nozzle effect also produce negative pressure, but very little with the bottom 13 opposed areas of rotary body 11, can be affected hardly.

Thereby, even have the rotary body 11 of constant weight, also can make its come-up, the gap the earth come-up than the swivel bearing portion 12 of the axle 21 of journal rest portion 22 and rotary body 11 can make rotary body 11 rotations along axle 21, but the normal amount of unbalance of instrumentation.

Below, describe for the fulcrum arrangement 50 of the another embodiment shown in Fig. 7.

In this fulcrum arrangement 50, between the bottom 13 of the plate 24 of thrust bearing part 23 and rotary body 11, keep fluid to guarantee this pressure, thereby without endless groove, and a plurality of peristomes 51 that are equipped in the upper surface upper shed of plate 24 constitute the 2nd fluid supply road 29, and fluid is flowed out from each peristome 51.

At this moment, as shown in Figure 7, set the number and the configuration of peristome 51 in such a way, that is: each peristome 51 in the heart distance 52, than little to the distance 53 of the outer circumference end of plate 24 from the center of peristome 51, for example as shown in Figure 7,8 peristomes 51 are set by equal circumference mode at interval, little thereby distance between centers 52 compares the distance 53 of outer terminal.

In addition, be provided with not shown access, be assigned with and flow out from a fluid of supplying with at each peristome 51.

In addition, other structure of this fulcrum arrangement 50 is identical with the fulcrum arrangement 20 that has illustrated.

According to the fulcrum arrangement 50 that constitutes in this wise, when a plurality of peristomes 51 that make fluid supply with road 29 from the 2nd fluid flow out between the bottom 13 of rotary body 11 and the plate 24, because the fluid of this outflow is wanted the stream of the outer circumference end of course plate 24, in the heart stream will be grown in the ratio open portion 51, flow path resistance is bigger, so be maintained between the bottom 13 and plate 24 of rotary body 11 towards the fluid of 51 outflows of each peristome with from the fluid that the tap hole 26 of journal rest portion 22 flows out, thereby can guarantee to make the required pressure of rotary body 11 come-ups.

Thereby, even have the rotary body 11 of constant weight, also can make its come-up, the gap the earth come-up than the swivel bearing portion 12 of the axle 21 of journal rest portion 22 and rotary body 11 can make rotary body 11 along axle 21 rotations, but the normal amount of unbalance of instrumentation.

In addition, in the respective embodiments described above, as the fluid of the come-up usefulness of journal rest portion and thrust bearing part, be to use compressed-air actuated situation to be illustrated as example, but, can use air compressible fluid in addition, also can make incompressible fluids such as water or lubricity.

And then can constitute, switch by the fluid of switching mechanism the come-up usefulness of journal rest portion and thrust bearing part.Use lubricated wet goods incompressible fluid so that the rotary body come-up, compressible fluid such as air supply then, the use amount of may command lubricating oil thus, and can in cleaning, blow off attached to the lubricating oil on the rotary body.

In addition, owing to can constitute, switch by the fluid of switching mechanism the come-up usefulness of journal rest portion and thrust bearing part, so, even the rotary body that varies in weight also can use identical axle, the rotary body lighter for weight uses compressible fluid, use incompressible fluid for heavier rotary body, thereby can guarantee and the corresponding float-amount of the characteristic of compressible fluid and incompressible fluid.

In sum, according to fulcrum arrangement 20 of the present invention, it is a kind of being arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting 11 and the fulcrum arrangement that the balance correction of its rotation is used, be provided with journal rest portion 22, this journal rest portion 22 is included under the come-up state can be around the Z-axis axle 21 of rotating body for supporting 11 rotatably, the bottom of this axle 21 is provided with the thrust bearing part 23 in the bottom 13 of come-up state lower support rotary body 11, be provided with the 1st fluid and supply with road 27, the 1st fluid is supplied with center stream 25 and the tap hole 26 of supplying with the fluid of come-up usefulness between the swivel bearing hole 12 that road 27 is included in axle 21 and rotary body 11, with the bottom 13 opposed thrust bearing parts 23 of rotary body 11 on endless groove 28 is set, but also being set, the 2nd fluid supplies with road 29, this 2 fluid is supplied with road 29 and is communicated with this endless groove 28, supply with the fluid of rotary body come-up usefulness, so, rotary body 11 and journal rest portion 22 and thrust bearing part 23 are supported separately, compressed fluid is flowed out from the endless groove 28 that is arranged on the thrust bearing part 23, thereby the interior all sides at endless groove 28 also can fully be full of fluid, even the rotary body 11 of constant weight is arranged, also can support its weight and make its come-up, thereby can guarantee sufficient float-amount, stably rotate along journal rest portion 22, carry out the balance correction.

In addition, according to fulcrum arrangement 30 of the present invention, substitute endless groove 28, and ring-shaped protrusion 31 is set on the peripheral part of thrust bearing part 23 or rotary body 11, this jut 31 forms than the little gap 32, gap between the upper surface of the lower surface of the bottom 13 of rotary body 11 and thrust bearing part 23, and the 2nd fluid is set in thrust bearing part 23 upper sheds supplies with road 29, so, can on the peripheral part of thrust bearing part 23 or rotary body 11, ring-shaped protrusion 31 be set, form less clearance 32, can prevent from thus to supply with the direction of flow peripheral part that road 29 is supplied with towards thrust bearing part 23, fully be full of fluid, even the rotary body 11 of constant weight is arranged from the 2nd fluid, also can support its weight and make the rotary body come-up, thereby can guarantee sufficient float-amount, stably rotate, carry out the balance correction along journal rest portion 22.

And, according to fulcrum arrangement 40 of the present invention, on arbitrary in thrust bearing part 23 and rotary body 11 opposed faces, the restriction 41 that ring-type is set is to substitute endless groove 28, this restriction 41 forms than the little gap 42, gap between the upper surface of the lower surface of the bottom 13 of rotary body 11 and thrust bearing part 23, so the restriction 41 of ring-type is set on arbitrary in the opposed faces of thrust bearing part 23 and rotary body 11, so become less clearance 42, can guarantee relatively large gap 42 in interior all sides of restriction 41 thus, can prevent the direction of flow peripheral part, in thrust bearing part 23, fully be full of fluid, even the rotary body 11 of constant weight is arranged, also can support its weight and make the rotary body come-up, thereby can guarantee sufficient float-amount, stably rotate along journal rest portion 22, carry out the balance correction.

In addition, according to fulcrum arrangement 40 of the present invention, owing to not only restriction 41 is set but also the 2nd fluid supply road 29 of opening on thrust bearing part 23 is set, so, supply with fluid by supply with road 29 from the 2nd fluid towards interior all sides of restriction 41, so not only can prevent the outflow of fluid towards peripheral part, but also can further guarantee to make sufficient fluid to be filled in the thrust bearing part 23, even the rotary body 11 of constant weight is arranged, also can support its weight and make the rotary body come-up, thereby can guarantee sufficient float-amount, stably rotate, carry out the balance correction along journal rest portion 22.

And then, according to fulcrum arrangement 50 of the present invention, supply with on the road 29 at the 2nd fluid on the thrust bearing part 23 at opening, a plurality of peristomes 51 are set to substitute endless groove 28, and these peristomes 51 are arranged between the open centre of adjacency distance 52 less than from the center of each peristome 51 to the distance 53 of periphery open end, so, be configured by the peristome 51 of the 2nd fluid of opening on thrust bearing part 23 being supplied with road 29, can increase flow path resistance towards outer circumferential side, suppression fluid flows out towards peripheral part, so just fluid fully can be filled in the thrust bearing part 23, even the rotary body 11 of constant weight is arranged, also can support its weight and make the rotary body come-up, thereby can guarantee sufficient float-amount, stably rotate along journal rest portion 22, carry out the balance correction.

Next, the plurality of embodiments to the supporting device for correcting balance of the rotary body of the present invention that particularly uses lubricated wet goods incompressible fluid describes in following content.

Fig. 8 and Fig. 9 relate to an embodiment of the supporting device for correcting balance of rotary body of the present invention, and Fig. 8 removes the brief configuration figure of a part to represent, Fig. 9 is local amplification view.

The supporting device for correcting balance 60 of this rotary body (being designated hereinafter simply as fulcrum arrangement 60), be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, for example, be provided with by the bearing journal 5 of setting on the vibration bridge 4 that substitutes the fulcrum arrangement 1 that illustrated balance correction has been used in Figure 1A and Figure 1B and the mode of plate 8, even heavier or bigger rotary body, also can be under the come-up state rotatably mounted rotary body 11.

This fulcrum arrangement 60 is provided with journal rest portion 62, it is included under the come-up state can be around the Z-axis axle 21 of rotating body for supporting 11 rotatably, be wholely set discoid plate 24 in the bottom of this axle 21, this plate 24 constitutes the thrust bearing part 23 with the bottom 13 of come-up state support rotary body 11, and this plate 24 is fixed on the vibration bridge 4.

In this fulcrum arrangement 60, the swivel bearing hole 12 of rotary body 11 is being installed on the axle 21 and can be in the journal rest portion 62 that Z-axis supports rotatably, upper and lower settings support 65a, 65b, other part is a path, when the swivel bearing hole 12 of rotary body 11 is installed, can between support 65a, 65b up and down, form spatial portion 66.

In addition, in order to form this spatial portion 66, be not limited to will axle 21 up and down support 65a, 65b beyond be taken as less diameter, the inside diameter in the swivel bearing hole 12 of rotary body 11 can be taken as bigger diameter, forming spatial portion 66, or make up these situations and form.In addition, support is not limited to two places up and down, can also increase.

On the surface level of support 65a, 65b about this axle 21, be formed with a plurality of tap holes 67, these hole openings are on the periphery of axle 21, with supply with road 68 along ring-type the 1st fluid in the outside of the dual formation of central shaft of axle 21 and be communicated with, thereby supply with incompressible fluid, for example lubricating oil of the usefulness that floats.

In addition, in this fulcrum arrangement 60, be formed with the endless groove 69 of the leading section of the tap hole 67 that is communicated with support 65a, 65b up and down, thus can be towards evenly supplying with incompressible fluid on every side.In addition, also can omit this endless groove 69.

Thereby, make and supply with the lubricating oil of supplying with on road 68 towards the 1st fluid of the outer circumferential side of dual stream and flow out from tap hole 67 and ring-type hole slot 69, and when supplying among support 65a, the 65b between the swivel bearing hole 12 of axle 21 and rotary body 11, then become following state: by the pressure of the lubricating oil of incompressible fluid, make rotary body 11 across minim gap and with the non-contacting state of axle under, can be supported rotatably around Z-axis.

On the other hand, in this fulcrum arrangement 60, between the bottom 13 of discoideus plate 24 that constitutes thrust bearing part 23 and rotary body 11, the incompressible fluid that supplies in the journal rest portion 62 flows into, thereby at come-up state lower support rotary body 11.

Thus, incompressible fluid is flow into the thrust bearing part 23 from journal rest portion 62, yet different with the situation of compressible fluid is, can not produce violent volumetric expansion, can not produce the negative pressure that causes by nozzle effect yet, pressure by the lubricating oil of incompressible fluid can make rotary body 11 float on plate 24, can obtain the float-amount greater than the regulation in the gap of journal rest portion 62.

In addition, in this fulcrum arrangement 60, in order to discharge the incompressible fluid in the spatial portion 66 between up and down support 65a, the 65b that is fed into journal rest portion 62, and discharge road 70 is set at the central part of axle 21, this discharge road 70 is passed through intercommunicating pore 71 and is communicated with spatial portion 66, and incompressible fluid can be discharged to the outside.

Thus, raise at the pressure at support 65a, 65b place by spatial portion 66, thereby can improve rigidity, can make the central shaft rotation of rotary body 11 along axle 21.

Equally, the incompressible fluid that flows out more upward for the support 65a on delivery ratio top is discharged the mode of discharging road 70 with dual-purpose in roads 73 and is extended towards the top and form intercommunicating pore 72, the 2 above the support 65a on top.

Thus, not only can prevent to make situations such as rotary body 11 off-centre, but also can prevent swivel bearing hole 12 the splashing of rotary body 11 for the lubricating oil under the through hole situation because of the influence of the pressure of the lubricating oil of the top of holding the 65a of portion.

And, in this fulcrum arrangement 60, spill owing to flow into the peripheral part of the incompressible fluid meeting slave plate 24 in the thrust bearing part 23, thus be provided with the accumulator tank 74 of ring-type, with its recovering mechanism as the recovery incompressible fluid.

Thus, not only recyclable lubricating oil is so that recycle, but also can prevent towards around splash etc.

In the fulcrum arrangement 60 that constitutes in this wise, rotary body 11 is installed as follows, promptly, the swivel bearing hole 12 of rotary body 11 is encased on the axle 21 of journal rest portion 62.

To supply to the 1st fluid as the lubricating oil of incompressible fluid and supply with road 68, and incompressible fluid is flowed out from endless groove 69 by the tap hole 67 up and down of axle 21, thus with respect to the axle 21 of stationary state, in the swivel bearing portion 12 of come-up state support rotary body 11.

Equally, make and supply with the part that road 68 supplies to the lubricating oil of the incompressible fluid in the journal rest portion 62 by the 1st fluid and flow in the thrust bearing part 23, between the bottom 13 of the upper surface of plate 24 and rotary body 11, keep-up pressure, so at come-up state lower support rotary body 11.And the lubricating oil that leaks into the periphery of plate 24 flows into and is recovered in the accumulator tank 74, thereby recycles.

Rotation rotary body 11 under this state, but instrumentation passes to the out-of-balance force of vibration bridge 4 thus, thus carry out balance test.

In this fulcrum arrangement 60, because it is different with the situation of using compressible fluid, can not cause volumetric expansion, so on the incompressible fluid that flows out from the tap hole 67 of journal rest portion 62 and endless groove 69 towards thrust bearing part 23, can not produce the negative pressure portion that causes because of nozzle effect yet, even the rotary body 11 of constant weight is arranged, also can utilize the pressure of lubricating oil to guarantee to make the required pressure of rotary body 11 come-ups.

Thereby, even have the rotary body 11 of constant weight, also can make its come-up, than the gap the earth come-up of the swivel bearing portion 12 of the axle 21 of journal rest portion 62 and rotary body 11, can make rotary body 11 rotations along axle 21, but so normal amount of unbalance of instrumentation.

Promptly, prevent that the bottom 13 with rotary body 11 from being that benchmark rotates on plate 24, can reach with sufficient precision in the geometry axle center of the swivel bearing portion 12 of rotary body 11 and the periphery of axle 21 under the consistent state, rotation rotary body 11 can obtain correct balance correction precision.

Next, according to Figure 10 other embodiment of the present invention is described.

In this fulcrum arrangement 80, between the bottom 13 of the plate 24 of thrust bearing part 23 and rotary body 11, be provided with 2nd fluid of opening on the upper surface of plate 24 and supply with road 81, be different from journal rest portion 62 and can directly supply with incompressible fluid, supplied with along separate routes towards the incompressible fluid of journal rest portion 62 supplies such as the part of lubricating oil.Thus, the pressure of incompressible fluid can be between the bottom 13 of plate 24 and rotary body 11, guaranteed more reliably, rotary body 11 come-ups can be further made reliably.

In addition, in this fulcrum arrangement 80, shown in right side half part of Figure 10, in order to keep supplying with the incompressible fluid on road 81 to guarantee this pressure more reliably from the 2nd fluid, and the teat 82 of formation ring-type, the peripheral part that this teat 82 is slave plates 24 reduces the gap 83 of 11 of this teat 82 and rotary bodies towards the outstanding dike of the periphery of the bottom 13 of rotary body 11, the peripheral end that can prevent incompressible fluid slave plate 24 thus flows out, thereby keep-ups pressure.

In addition, other structure of this fulcrum arrangement 80 is identical with the fulcrum arrangement 60 that has illustrated.

According to the fulcrum arrangement 80 that constitutes in this wise, making incompressible fluid supply with road 81 from the 2nd fluid flows out between the bottom 13 and plate 24 of rotary body 11, compressible fluid that thereby the tap hole 67 from journal rest portion 62 can be flowed out and the incompressible fluid that flows out from the 2nd fluid supply road 81 remain between the bottom 13 and plate 24 of rotary body 11, can guarantee to make the required pressure of rotary body 11 come-ups more reliably.

Thus, prevent that the bottom 13 with rotary body 11 from being that benchmark rotates on plate 24, rotation rotary body 11 under the consistent state can be reached in the geometry axle center of the swivel bearing portion 12 of rotary body 11 and the periphery of axle 21 with sufficient precision, correct balance correction precision can be obtained.

And, in this fulcrum arrangement 80, owing to forming as the peripheral part of slave plate 24 cyclic lug 82 towards the outstanding dike of the periphery of the bottom 13 of rotary body 11, so the gap 83 between the periphery of this teat 82 and rotary body 11 is less, the peripheral end that can prevent incompressible fluid slave plate 24 thus flows out, can keep-up pressure more reliably, even the rotary body 11 of constant weight is arranged, also can prevent with this bottom 13 to be that benchmark rotates on plate 24, rotation rotary body 11 under the consistent state can be reached in the geometry axle center of the swivel bearing portion 12 of rotary body 11 and the periphery of axle 21 with sufficient precision, correct balance correction precision can be obtained.

Below, describe for the fulcrum arrangement 90 of another embodiment shown in Figure 11.

In this fulcrum arrangement 90, pairing situation is that the swivel bearing portion 12 of rotary body 11 is made of rather than through hole the hole of being with the end, because the incompressible fluid in the supply road journal rest portion 62 remains in the place, top of axle 21, so the peristome 91 of the upper end of configuration intercommunicating pore 72 on as the top above the support 65a of topmost, thereby can be discharged to the outside from the 2nd discharge road 70 of discharging road 73 and spatial portion 66 that is communicated with.

Thus, supply to incompressible fluid in the journal rest portion 62 by remaining in axle 21 the top and the bottom branch of swivel bearing axle 12, thereby produce buoyancy in this part, can prevent influences such as rotary body 11 off-centre thus, rotation rotary body 11 under the state that can be consistent with sufficient precision in the geometry axle center of the periphery of the swivel bearing portion 12 of rotary body 11 and axle 21 obtains correct balance correction precision.

And in this fulcrum arrangement 90,, thereby discharging the discharge road 70 of incompressible fluids from spatial portion 66 and discharging the 2nd of incompressible fluid from the top and discharge road 73 and connecting pump 92 as output mechanism for mandatory discharge.

Thus, can mandatory attraction and discharge remain in the incompressible fluid at place, top of bottom branch, the axle 21 of the swivel bearing portion 12 of spatial portion 66 and rotary body 11, can not apply the influence that pressure brought, thereby can prevent the off-centre of rotary body 11 these parts by incompressible fluid.

In addition, other structure of this fulcrum arrangement 90 is identical with the fulcrum arrangement 60 that has illustrated.

Fulcrum arrangement 90 according to such formation, even the rotary body 11 of constant weight is arranged, also can eliminate influence such as the off-centre brought by incompressible fluid and make the rotary body come-up, gap the earth come-up than the swivel bearing portion 12 of the axle 21 of journal rest portion 62 and rotary body 11, can make rotary body 11 rotations along axle 21, thus but the normal amount of unbalance of instrumentation.

More than, as each embodiment is illustrated, according to fulcrum arrangement 60 of the present invention, be arranged on the uneven equilibrium of forces correcting device 1 of instrumentation, rotating body for supporting 11 and the fulcrum arrangement 60 that the balance correction of its rotation is used, journal rest portion 62 is set, this journal rest portion 62 comprise the above-mentioned rotary body of supporting and make its can be under the come-up state around Z-axis 11 axle 21 rotatably, on the bottom of this axle 21, be arranged on the thrust bearing part 23 of the bottom 13 of the above-mentioned rotary body 11 of come-up state lower support, in addition, between the swivel bearing hole 12 of above-mentioned axle 21 and above-mentioned rotary body 11, the fluid that the incompressible fluid of supplying with come-up usefulness is set is supplied with road 68, but also expansion support 65a is set on the either party at least in above-mentioned axle 21 and above-mentioned swivel bearing hole 12, spatial portion 66 beyond the 65b, so, with journal rest portion 62 and thrust bearing part 23 rotating body for supporting 11 separately, make incompressible fluid flow out to thrust bearing part 23 from fluid supply road 68, even the rotary body 11 of constant weight is arranged, also can support its weight so that float, support 65a in journal rest portion 62, spatial portion 66 is set beyond the 65b, make the incompressible fluid of supplying with from fluid supply road 68 only act on the support 65a that need be used to support, 65b, thereby can guarantee float-amount, but also can improve rigidity at journal rest portion 62 places, prevent off-centre and rotation stably.

And then, according to this fulcrum arrangement 60, be communicated to discharge road 70 above-mentioned spatial portion 66, that discharge inner incompressible fluid owing to be provided with, so by discharging the incompressible fluid of spatial portion 66 from discharging road 70, support 65a, the 65b that incompressible fluid is only acted on to be used to support, thereby improve rigidity, prevent off-centre and rotation stably at journal rest portion 62 places.

In addition, according to fulcrum arrangement 80 of the present invention, owing between above-mentioned thrust bearing part 23 and above-mentioned rotary body 11, be provided with the ring-shaped protrusion 82 that keeps incompressible fluid, so can keep incompressible fluid more reliably at thrust bearing part 23 places, even the rotary body 11 of constant weight is arranged, also its come-up can be made reliably, the balance correction can be carried out.

According to fulcrum arrangement 80 of the present invention, be provided with endless groove 69 owing to supply with the leading section on road 81 at above-mentioned the 2nd fluid of above-mentioned journal rest portion 62, so can make incompressible fluid flow out on the complete cycle of journal rest portion 62 from endless groove 69, prevent off-centre etc., rotate to carry out the balance correction along journal rest portion 62 reliably.

In addition, according to fulcrum arrangement 80 of the present invention, the 2nd fluid that is provided with the incompressible fluid of supplying with rotary body come-up usefulness owing to the bottom 13 opposed above-mentioned thrust bearing parts 23 with above-mentioned rotary body 11 is supplied with road 80, so can further supply with incompressible fluid towards thrust bearing part 23, thereby improve rigidity, prevent eccentric with stable rotation at journal rest portion 62 places.

According to fulcrum arrangement 90 of the present invention, make peristome 91 above the support 65a of the topmost between above-mentioned axle 21 and the above-mentioned swivel bearing hole 12, discharge road 73 owing to be provided with so that discharge the 2nd of incompressible fluid, so incompressible fluid that flows out towards the top of the support 65a of topmost, also can discharge road 73 from intercommunicating pore 72 and the 2nd discharges, even the swivel bearing hole 12 of rotary body 11 is the band non-through situation in hole at the end, also can discharge incompressible fluid from peristome 91, under situation about connecting, can prevent to splash and leak to carry out the balance correction.

In addition, according to fulcrum arrangement 90 of the present invention, forcibly make incompressible fluid be discharged to above-mentioned discharge road 70 and/or the above-mentioned the 2nd pump 92 as output mechanism of discharging in the road 73 owing to be provided with, so, by discharging the pump 92 that is provided as output mechanism on the road 73 discharging road 70 or the 2nd, mandatory discharge incompressible fluid, thus only supply to necessary part to support, and can prevent to splash and leak, carry out the balance correction.

According to fulcrum arrangement 90 of the present invention, owing to be provided with accumulator tank 74 opposed with the periphery of above-mentioned thrust bearing part 23, that the recovering mechanism of incompressible fluid is reclaimed in conduct, so can retrieve incompressible fluid by the accumulator tank 74 of recovering mechanism from thrust bearing part 23, can prevent to splash and leak, carry out the balance correction.

In addition, by preferred embodiment fulcrum arrangement of the present invention being illustrated, still can think that the interest field that comprises in the present invention is not limited to this embodiment.Otherwise interest field of the present invention also comprises whole improvement, correction and the equivalent that belongs in the appending claims.

Claims (14)

1. the supporting device for correcting balance of a rotary body, be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, it is characterized in that, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, be provided with the 1st fluid that the fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road

Be provided with endless groove with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body, and, being provided with the 2nd fluid and supplying with the road, the 2nd fluid is supplied with the road and is communicated with this endless groove, supplies with the fluid of rotary body come-up usefulness.

2. the supporting device for correcting balance of rotary body as claimed in claim 1, it is characterized in that, under the come-up state of above-mentioned rotary body, the peripheral part of above-mentioned thrust bearing part or above-mentioned rotary body is provided with ring-shaped protrusion to substitute above-mentioned endless groove, this ring-shaped protrusion forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and thrust bearing part, and is provided with above-mentioned the 2nd fluid supply road in above-mentioned thrust bearing part upper shed.

3. the supporting device for correcting balance of rotary body as claimed in claim 1, it is characterized in that, substitute above-mentioned endless groove, under the come-up state of above-mentioned rotary body, arbitrary face in the opposed faces of above-mentioned thrust bearing part and above-mentioned rotary body is provided with the restriction of ring-type, and the restriction of this ring-type forms the little gap, gap than the upper surface of above-mentioned rotary body bottom lower surface and above-mentioned thrust bearing part.

4. the supporting device for correcting balance of rotary body as claimed in claim 3 is characterized in that, is provided with above-mentioned restriction, and is provided with above-mentioned the 2nd fluid supply road in above-mentioned thrust bearing part upper shed.

5. the supporting device for correcting balance of rotary body as claimed in claim 1, it is characterized in that, above-mentioned the 2nd fluid supply road that is opened on above-mentioned thrust bearing part is provided with a plurality of openings to substitute above-mentioned endless groove, and these openings are arranged to distance between the open centre of adjacency less than the distance from each open centre to the periphery open end.

6. as the supporting device for correcting balance of arbitrary described rotary body in the claim 1 to 5, it is characterized in that, can supply with road and/or above-mentioned the 2nd fluid and supply with fluid in the road and switch to compressible fluid and incompressible fluid supplying to above-mentioned the 1st fluid to supply with.

7. the supporting device for correcting balance of a rotary body, be arranged on the uneven equilibrium of forces correcting device of instrumentation, rotating body for supporting and the fulcrum arrangement that the balance correction of its rotation is used, it is characterized in that, be provided with journal rest portion, this journal rest portion comprises the axle that supports above-mentioned rotary body and it can be rotated around Z-axis under the come-up state, be provided with thrust bearing part in the bottom of the above-mentioned rotary body of come-up state lower support in the bottom of this axle, on the other hand, be provided with the fluid that the incompressible fluid with come-up usefulness supplies between the swivel bearing hole of above-mentioned axle and above-mentioned rotary body and supply with the road, and, the spatial portion in the space beyond being provided with in any one at least of above-mentioned axle and above-mentioned swivel bearing hole enlarges support.

8. the supporting device for correcting balance of rotary body as claimed in claim 7 is characterized in that, with the opposed above-mentioned thrust bearing part in the bottom of above-mentioned rotary body on, the 2nd fluid that is provided with the incompressible fluid of supplying with rotary body come-up usefulness is supplied with the road.

9. the supporting device for correcting balance of rotary body as claimed in claim 7 is characterized in that, is provided with the discharge road that is communicated with and discharges inner incompressible fluid with above-mentioned spatial portion.

10. the supporting device for correcting balance of rotary body as claimed in claim 7, it is characterized in that, be provided with the 2nd and discharge the road, the 2nd discharge the road above the support that leans on most between above-mentioned axle and the above-mentioned swivel bearing hole opening to discharge incompressible fluid.

11. the supporting device for correcting balance as claim 9 or 10 described rotary bodies is characterized in that, is provided with output mechanism, this output mechanism forcibly makes incompressible fluid be discharged in above-mentioned discharge road and/or above-mentioned the 2nd discharge road.

12. the supporting device for correcting balance of rotary body as claimed in claim 7 is characterized in that, is provided with the recovering mechanism that reclaims incompressible fluid opposed to each other with the periphery of above-mentioned thrust bearing part.

13. the supporting device for correcting balance of rotary body as claimed in claim 7 is characterized in that, between above-mentioned thrust bearing part and above-mentioned rotary body, is provided with the ring-shaped protrusion that keeps incompressible fluid.

14. the supporting device for correcting balance of rotary body as claimed in claim 7 is characterized in that, the leading section of supplying with the road at the above-mentioned fluid of above-mentioned journal rest portion is provided with endless groove.

Images