CN114352638B - High-pressure multipoint loading oil floating bearing and vibrating table - Google Patents
High-pressure multipoint loading oil floating bearing and vibrating table Download PDFInfo
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- CN114352638B CN114352638B CN202111619633.7A CN202111619633A CN114352638B CN 114352638 B CN114352638 B CN 114352638B CN 202111619633 A CN202111619633 A CN 202111619633A CN 114352638 B CN114352638 B CN 114352638B
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- 230000003068 static effect Effects 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000002706 hydrostatic effect Effects 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 15
- 239000003921 oil Substances 0.000 description 201
- 239000010687 lubricating oil Substances 0.000 description 10
- 238000005461 lubrication Methods 0.000 description 6
- 238000005381 potential energy Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention relates to a high-pressure multipoint loading oil float bearing and a vibrating table, which comprise a bearing body, wherein a guide shaft is arranged in the bearing body in a sliding way; the high-pressure cavity is arranged in the bearing body and is suitable for storing oil and conveying the oil into the static pressure cavity groove; the static pressure cavity groove is formed by surrounding the inner wall of the bearing body, which faces the guide shaft, and oil in the static pressure cavity groove forms a high-pressure oil film ring on the outer wall of the guide shaft; the oil inlet is communicated with the high-pressure cavity and is suitable for conveying oil into the high-pressure cavity; the oil outlet is communicated with the static pressure cavity groove and is suitable for discharging oil in the static pressure cavity groove from the oil outlet.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a high-pressure multipoint loading oil floating bearing and a vibrating table.
Background
A shaker table is a test device used to simulate the various environments encountered by a product during its manufacturing, assembly, shipping, and use execution stages to determine whether the product is tolerant of environmental vibratory energy.
The vibration table normally comprises linear guide rails, the bottom of the horizontal plane of the hydraulic vibration table is guided by the linear guide rails, the guide of the linear guide rails is normally realized by linear bearings, and the actual moving part inside the common guide part is divided into a steel column or a steel column, and the friction mode is rolling friction.
However, when the vibration table works, high-frequency reciprocating motion is often adopted, and when the linear bearing bears overweight load and high-frequency reciprocating motion, the linear bearing is internally in rolling friction, and lubrication is only grease lubrication, so that the internal lubrication of parts is insufficient, the internal temperature is increased, the friction force is increased, and the use of the vibration table is affected.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the internal lubrication is insufficient and the performance of equipment is affected, and provides the high-pressure multipoint loading oil floating bearing and the vibrating table.
A high pressure multi-point loaded oil bearing comprising:
the guide shaft is arranged in the bearing body in a sliding way;
the high-pressure cavity is arranged in the bearing body and is suitable for storing oil and conveying the oil into the static pressure cavity groove;
the static pressure cavity groove is formed by surrounding the inner wall of the bearing body, which faces the guide shaft, and oil in the static pressure cavity groove forms a high-pressure oil film ring on the outer wall of the guide shaft;
The oil inlet is communicated with the high-pressure cavity and is suitable for conveying oil into the high-pressure cavity;
the oil outlet is communicated with the static pressure cavity groove and is suitable for discharging oil in the static pressure cavity groove from the oil outlet.
Furthermore, a plurality of jet holes are formed between the high-pressure cavity and the static pressure cavity groove, the jet holes are arranged around the periphery of the guide shaft, the high-pressure cavity is communicated with the static pressure cavity groove through the jet holes, and oil enters the static pressure cavity through the jet holes.
Further, the jet hole is opened towards the opening of one end of the high-pressure cavity.
Furthermore, an oil collecting ring groove is formed in the inner side wall, close to the oil outlet, of the bearing body, a gap between the side wall of the bearing body and the guide shaft between the oil collecting ring groove and the hydrostatic cavity groove is sealed, and the oil outlet and the oil collecting ring groove are communicated.
Further, oil seals are arranged on the inner side walls of the two ends of the bearing body, and the oil seals are abutted against the guide shafts.
Further, the bearing body comprises a bearing shell and a central guide body, the high-pressure cavity is positioned between the bearing shell and the central guide body, and the joint between the two ends of the bearing shell and the central guide body is sealed.
Furthermore, sealing end covers are arranged at two ends of the bearing shell and the center guide body, and the sealing end covers are detachably connected to the bearing shell and the center guide body.
Further, sealing rings are arranged between the bearing shell and the abutting surfaces at the two ends of the central guide body.
A vibrating table comprises the high-pressure multipoint loading oil floating bearing.
The technical scheme of the invention has the following advantages:
1. the high-pressure multipoint loading oil floating bearing comprises a bearing body, wherein a guide shaft is arranged in the bearing body in a sliding manner; the high-pressure cavity is arranged in the bearing body and is suitable for storing oil and conveying the oil into the static pressure cavity groove; the static pressure cavity groove is formed by surrounding the inner wall of the bearing body, which faces the guide shaft, and oil in the static pressure cavity groove forms a high-pressure oil film ring on the outer wall of the guide shaft; the oil inlet is communicated with the high-pressure cavity and is suitable for conveying oil into the high-pressure cavity; the oil outlet is communicated with the hydrostatic cavity groove, the oil in the hydrostatic cavity groove is suitable for being discharged from the oil outlet, the lubricating oil in the external oil tank is conveyed to the oil inlet through the pipeline, under the action of the oil inlet, the lubricating oil is conveyed to the high-pressure cavity, the oil is filled in the whole high-pressure cavity to form high-pressure oil, the high-pressure cavity is communicated with the hydrostatic cavity groove, therefore, the oil in the high-pressure cavity is conveyed to the hydrostatic cavity groove under the action of pressure, the high-pressure oil is filled in the whole hydrostatic cavity groove, at the moment, the oil in the hydrostatic cavity groove forms a high-pressure oil film ring on the outer surface of the guide shaft and is in contact with the guide shaft, the guide shaft is suspended in the middle of the bearing body under the action of high-pressure oil film conversion, so that the guide shaft is enabled to be lubricated by the high-pressure oil film basically consistent in all directions of the guide shaft at the hydrostatic cavity groove, the guide shaft is more fully lubricated, the lubrication is good, and the low-pressure oil taking away heat generated by friction of the guide shaft is discharged from the oil outlet, conveyed to the external oil tank, and conveyed to the oil inlet again, the oil is enabled to be cooled down under the action of pressure, the condition between the hydrostatic cavity groove and the external oil tank is enabled to flow, the high-pressure oil is enabled to flow, the heat generated by the high-pressure oil is fully and the heat is prevented from the guide shaft, the problem of the high-pressure bearing is generated, and the high-frequency vibration performance is always is avoided, and the problem is generated, and the high-performance is always when the high-performance is caused, and the high temperature is generated, and the high vibration performance is always is because the high and is well and has high and is well.
2. The high-pressure multipoint loading oil floating bearing provided by the invention has the advantages that a plurality of jet holes are formed between the high-pressure cavity and the static pressure cavity groove, the jet holes are arranged around the periphery of the guide shaft, the high-pressure cavity is communicated with the static pressure cavity groove through the jet holes, oil enters the static pressure cavity through the jet holes, when lubricating oil is conveyed into the high-pressure cavity from the oil inlet under the action of an external pipeline until the high-pressure cavity is filled with the lubricating oil, the oil in the high-pressure cavity is ejected into the static pressure cavity groove from the periphery of the static pressure cavity groove under the action of the jet holes, so that the oil forms uniform high-pressure oil film rings in the static pressure cavity groove, the guide shaft is suspended in the middle of the high-pressure oil film rings, the guide shaft is positioned in the static pressure cavity groove and fully contacted with the oil, and uniform high-pressure oil film lubrication is ensured in all directions of rotation of the guide shaft of the static pressure cavity groove, therefore, when the guide shaft reciprocates at high frequency in the bearing body, the high-pressure oil film can fully lubricate the guide shaft, meanwhile, the guide shaft and the bearing body work continuously enter the high-pressure cavity and the static pressure cavity groove from the oil inlet, and the lubricated low-pressure oil in the static pressure cavity groove is discharged from the oil outlet to an external oil tank, so that heat generated by the movement of the guide shaft and the bearing body is taken away, and the guide shaft can be fully lubricated with the guide shaft, so that heat generated by the high-frequency reciprocating movement of the guide shaft in the bearing body can be taken away to the greatest extent, the bearing is ensured to always work under proper working conditions, the service life of the bearing is effectively prolonged, and the problem of performance reduction of the vibrating table caused by temperature rise is avoided.
3. The high-pressure multipoint loading oil floating bearing provided by the invention has the advantages that the jet hole is opened towards the opening at one end of the high-pressure cavity, and the jet hole is opened according to the Bernoulli equationWhen the oil flows stably in the cylindrical jet hole, the sum of kinetic energy, potential energy and pressure at any position of the same jet hole in unit volume is constant, when the jet hole is horizontally placed, the potential energy of each flow section is equal, and the pressure of the oil at the position with small flow section is reduced, so that the flow rate of the oil is increased.
4. According to the high-pressure multipoint loading oil floating bearing provided by the invention, the oil collecting ring groove is formed in the inner side wall of the bearing body, which is close to the oil outlet, the gap between the side wall of the bearing body and the guide shaft between the oil collecting ring groove and the hydrostatic cavity groove is sealed, the oil outlet and the oil collecting ring groove are communicated, high-pressure oil in the high-pressure cavity enters the hydrostatic cavity groove to form a high-pressure oil film ring to suspend the guide shaft in the bearing body, so that the guide shaft is fully lubricated, the lubricated high-pressure oil becomes low-pressure oil through the gap between the bearing body and the guide shaft, enters the oil collecting ring groove to collect oil leaked from the hydrostatic cavity groove, the low-pressure oil is discharged out of the bearing body through the oil outlet, and meanwhile, heat generated when the bearing body and the guide shaft move together with the oil is conveyed into an external oil tank through a pipeline.
5. According to the high-pressure multipoint loading oil floating bearing provided by the invention, the oil seals are arranged on the inner side walls of the two ends of the bearing body, the oil seals are abutted against the guide shafts, and lubricating oil is prevented from leaking out of a gap between the guide shafts and the bearing body through the arrangement of the oil seals and is only discharged out of the bearing body along the oil outlet.
6. The high-pressure multipoint loading oil floating bearing provided by the invention comprises the bearing shell and the central guide body, wherein the high-pressure cavity is positioned between the bearing shell and the central guide body, the joint parts of the two ends of the bearing shell and the central guide body are sealed, the two ends of the bearing shell and the central guide body are provided with the sealing end covers, the sealing end covers are detachably connected to the bearing shell and the central guide body, and the bearing shell and the central guide body are arranged so as to form the high-pressure cavity in a pairwise bonding way, so that the inner central guide body is not damaged by the outer bearing shell, in addition, the bearing shell and the central guide body can be singly replaced when being damaged, the inside of the high-pressure cavity is convenient to observe and maintain, and in addition, the bearing shell can be provided with various different shapes to meet various installation environments, and the central guide body is not replaced, so that the bearing body is more convenient to use.
7. According to the high-pressure multipoint loading oil floating bearing provided by the invention, the sealing rings are arranged between the abutting surfaces of the two ends of the bearing shell and the central guide body, and the joint of the bearing shell and the central guide body is sealed through the arrangement of the sealing rings, so that oil in the high-pressure cavity is prevented from leaking out of a gap between the bearing shell and the central guide body.
8. When the vibration table provided by the invention is used, lubricating oil in an external oil tank is conveyed to the oil inlet through the pipeline, the oil is conveyed into the high-pressure cavity under the action of the oil inlet, so that the whole high-pressure cavity is filled with the oil to form high-pressure oil, the high-pressure cavity is communicated with the static pressure cavity groove, the oil in the high-pressure cavity is conveyed into the static pressure cavity groove under the action of pressure, so that the whole static pressure cavity groove is filled with the high-pressure oil, the oil in the static pressure cavity groove forms a high-pressure oil film ring on the outer surface of the guide shaft and is contacted with the guide shaft, the guide shaft is suspended in the middle of the bearing body under the action of high-pressure oil film exchange, and therefore, the guide shaft is enabled to be lubricated by a high-pressure oil film basically consistent in all directions, the guide shaft is enabled to be lubricated more fully, the guide shaft is lubricated simultaneously, and the low in heat generated by taking away the friction of the guide shaft is discharged from the oil outlet, is conveyed into the external oil tank to be cooled, the oil inlet again, the oil flows between the static pressure cavity groove and the external oil tank, so that the heat generated by friction is driven, the oil is fully and the guide shaft is lubricated on the outer surface of the guide shaft, the guide shaft is enabled to form a high-pressure oil film ring, and is contacted with the guide shaft, the guide shaft is always, the high-pressure oil is well, the high-pressure oil film is well, the guide shaft is well, the high-lubricated, the heat is well, and the guide shaft can well, and the vibration condition can be avoided, and the vibration condition can be always is caused, and the high and can be caused, and can and long, and can and well.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a vibrating table according to the present invention;
FIG. 2 is a schematic diagram of the overall structure of the high-pressure multi-point loading oil bearing of the present invention;
FIG. 3 is a schematic diagram of the front structure of the high-pressure multi-point loading oil bearing of the present invention;
FIG. 4 is a cross-sectional view of the internal structure of the high pressure multi-point loaded oil bearing of the present invention;
fig. 5 is an enlarged view of the portion a in fig. 4 according to the present invention.
Reference numerals illustrate:
1. Vibrating the table top; 2. an actuator; 3. a motion decoupling assembly; 31. high-pressure multipoint loading oil floating bearings; 32. a guide shaft; 4. a bearing body; 41. a bearing housing; 42. a center guide body; 5. a high pressure chamber; 6. a static pressure cavity groove; 7. an oil inlet; 8. an oil outlet; 9. jet holes; 10. oil collecting ring groove; 11. oil seal, 12, seal end cap; 13. sealing ring, 14, screw.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Examples
Referring to fig. 1-5, the invention provides a vibrating table, which comprises a motion decoupling assembly 3 and a vibrating table top 1, wherein an object to be vibrated is placed on the vibrating table top 1, the motion decoupling assembly 3 is positioned at the bottom of the vibrating table top 1, an actuator 2 is connected to the bottom of the motion decoupling assembly 3, goods on the vibrating table top 1 are driven to vibrate through the actuator 2, the motion decoupling assembly 3 comprises a high-pressure multi-point loading oil floating bearing 31 and a guide shaft 32, the guide shaft 32 penetrates through the high-pressure multi-point loading oil floating bearing 31 and is arranged on the high-pressure multi-point loading oil floating bearing 31 in a sliding mode, and the guide shaft 32 slides in the multi-point loading oil floating bearing in a high-frequency reciprocating mode.
The high-pressure multipoint loading oil floating bearing 31 comprises a bearing body 4, a high-pressure cavity 5, a static pressure cavity groove 6, an oil inlet 7 and an oil outlet 8, and a guide shaft 32 is slidably arranged in the bearing body 4; the high-pressure cavity 5 is arranged inside the bearing body 4 and is suitable for storing oil and conveying the oil into the hydrostatic cavity groove 6; the hydrostatic cavity groove 6 is formed on the inner wall of the bearing body 4 facing the guide shaft 32 in a surrounding manner and forms a hydrostatic cavity with the guide shaft 32, and oil in the hydrostatic cavity groove 6 forms a high-pressure oil film ring on the outer wall of the guide shaft 32; the oil inlet 7 is communicated with the high-pressure cavity 5 and is suitable for conveying oil into the high-pressure cavity 5; the oil outlets 8 are communicated with the hydrostatic cavity groove 6, oil in the hydrostatic cavity groove 6 is discharged from the oil outlets 8, one oil inlet 7 is arranged, two oil outlets 8 are arranged, the two oil outlets 8 are symmetrically arranged relative to the oil inlet 7, and the oil inlet 7 and the oil outlet 8 are arranged along the length direction of the bearing body 4.
When the high-pressure oil pump is used, lubricating oil in an external oil tank is conveyed to the oil inlet 7 through a pipeline, under the action of the oil inlet 7, the oil is conveyed to the high-pressure cavity 5, the oil is filled in the whole high-pressure cavity 5, high-pressure oil is formed, and because the high-pressure cavity 5 is communicated with the static pressure cavity 6, the oil in the high-pressure cavity 5 is conveyed to the static pressure cavity 6 under the action of pressure, so that the high-pressure oil is filled in the whole static pressure cavity 6, at the moment, the oil in the static pressure cavity 6 forms a high-pressure oil film ring on the outer surface of the guide shaft 32 and is in contact with the guide shaft 32, the guide shaft 32 is suspended in the middle of the bearing body 4 under the action of high-pressure oil film exchange, so that the guide shaft 32 in all directions of the static pressure cavity 6 are lubricated by the high-pressure oil film, the guide shaft 32 is lubricated more fully, and simultaneously, and low-pressure oil taking away heat generated by friction of the guide shaft 32 is discharged from 8, conveyed to the external oil tank 6, and conveyed to the oil inlet 7 again, so that the oil flows between the static pressure cavity 6 and the external oil tank, the high-pressure oil film ring forms a high-pressure oil film ring and is formed on the outer surface of the guide shaft 32, the high-pressure oil ring is fully, the problem of the bearing is avoided, the high-pressure oil pump is fully generated due to the high-pressure oil bearing performance, and the high-frequency vibration performance is avoided, and the problem that the vibration performance is generated by the high-frequency vibration performance is always, and the high-frequency vibration performance is fully, and the vibration condition is always, and has high, and the service life is guaranteed.
Specifically, a plurality of jet holes 9 are formed between the high-pressure cavity 5 and the static pressure cavity 6, a plurality of jet holes 9 are arranged around the periphery of the guide shaft 32, the jet holes 9 are uniformly distributed on the inner side wall of the bearing body 4, one end of each jet hole 9 is communicated with the high-pressure cavity 5, the other end of each jet hole is communicated with the static pressure cavity 6, the high-pressure cavity 5 is communicated with the static pressure cavity 6 through the jet holes 9, and oil enters the static pressure cavity through the jet holes 9. When lubricating oil is conveyed into the high-pressure cavity 5 from the oil inlet 7 under the action of an external pipeline until the high-pressure cavity 5 is filled with the lubricating oil, at this time, under the action of the jet holes 9, the oil in the high-pressure oil cavity is injected into the high-pressure cavity 6 from the periphery of the static pressure cavity 6, so that the oil forms a uniform high-pressure oil film ring in the static pressure cavity 6, thereby suspending the guide shaft 32 in the middle of the high-pressure oil film ring, enabling the guide shaft 32 to be positioned in the static pressure cavity 6 and the oil to be fully contacted, ensuring that the guide shaft 32 at the static pressure cavity 6 rotates in all directions, and ensuring that the guide shaft 32 is lubricated by the uniform high-pressure oil film, when the guide shaft 32 is in high-frequency reciprocating motion in the bearing body 4, the high-pressure oil film can fully lubricate the guide shaft 32, and simultaneously, the guide shaft 32 and the bearing body 4 work continuously from the oil inlet 7 into the high-pressure cavity 5 and the static pressure cavity 6, and discharging the well-lubricated low-pressure oil in the static pressure cavity 6 from the oil outlet 8 into the external oil tank, thereby ensuring that the guide shaft 32 and the bearing body 4 move to be fully contacted with the oil, thereby ensuring that the heat generated by the guide shaft 32 and the bearing body can be fully carried away in the high-frequency reciprocating motion, and the bearing body can be fully carried away under the high-frequency reciprocating condition, and the bearing body can be avoided, and the problem of the bearing 32 is avoided, and the heat is fully due to the problem that the high-frequency vibration performance is generated when the bearing body is fully and the bearing is fully caused.
In addition, in order to enable oil to quickly flow from the high-pressure chamber 5 into the hydrostatic chamber groove 6, the orifice 9 is opened toward one end of the high-pressure chamber 5, according to Bernoulli's equationWhen the oil flows stably in the cylindrical jet hole 9, the sum of kinetic energy, potential energy and pressure in the same jet hole 9 is constant in each unit volume, when the jet hole 9 is horizontally placed, the potential energy of each flow section is equal, and the pressure of the oil in the place with small flow section is reduced, so that the opening of the jet hole 9 towards one end of the high pressure cavity 5 is opened, the oil flow section of the other part of the jet hole 9 except the part towards one end of the high pressure cavity 5 is smaller than the opening, and the oil can quickly enter the static pressure cavity groove 6 from the high pressure cavity 5 to form a high pressure oil film ring, so that the guide shaft 32 is fully lubricated.
The bearing body 4 is close to the oil-collecting ring groove 10 has all been seted up on the inside wall of oil-out 8, the bearing body 4 lateral wall and guiding axle 32 clearance seal between oil-collecting ring groove 10 and the hydrostatic cavity groove 6, oil-out 8 and oil-collecting ring groove 10 intercommunication, the high-pressure oil in high-pressure chamber 5 enters into hydrostatic cavity groove 6, form high-pressure oil film ring and come to suspend guiding axle 32 in bearing body 4, thereby fully lubricate guiding axle 32, the high-pressure oil that lubricates this moment becomes low pressure oil through the clearance between bearing body 4 and guiding axle 32, enter into oil-collecting ring groove 10, collect the fluid that hydrostatic cavity groove 6 leaked, and in with low pressure oil discharge bearing body 4 through oil-out 8, and the heat that produces when fluid will be with bearing body 4 and guiding axle 32 motion together through the pipeline transport to outside oil tank, because fluid abundant and guiding axle 32 lubricate, can furthest take away the heat that guiding axle 32 produced when the high-frequency reciprocating motion in bearing body 4 this moment, thereby guaranteed the bearing is always worked under suitable operating condition, the life-span of vibration table has been avoided appearing in the bearing, the problem of vibration performance has been avoided appearing in the reduction of the life-span of the bearing.
All be provided with the oil blanket 11 on the inside wall at bearing body 4 both ends, the oil blanket 11 sets up to low friction oil blanket 11, oil blanket 11 and guiding axle 32 conflict, through the setting of oil blanket 11 to avoided lubricating oil to leak away from the clearance between guiding axle 32 and the bearing body 4, only can discharge bearing body 4 along oil-out 8.
The bearing body 4 comprises a bearing shell 41 and a central guide body 42, annular grooves are formed in one side, facing the bearing shell 41, of the central guide body 42, the grooves of the bearing shell 41 and the bearing shell 41 form a high-pressure cavity 5 for storing high-pressure oil, the groove depth of the grooves is far greater than that of the hydrostatic cavity groove 6, the high-pressure cavity 5 is located between the bearing shell 41 and the central guide body 42, the joints at two ends of the bearing shell 41 and the central guide body 42 are sealed, sealing end covers 12 are arranged at two ends of the bearing shell 41 and the central guide body 42, the sealing end covers 12 are detachably connected to the bearing shell 41 and the central guide body 42 through screws 14, the bearing shell 41 and the central guide body 42 are arranged in a pair-by-pair mode, so that a high-pressure cavity 5 is formed, the inner central guide body 42 is prevented from being damaged by the outer bearing shell 41, in addition, when the bearing shell 41 and the central guide can be damaged, the inner part of the high-pressure cavity 5 can be replaced independently, observation and maintenance can be conveniently carried out, in addition, the bearing shell 41 can be provided with various different shapes so as to meet various installation environments, and the central guide body 42 is not convenient to use.
Sealing rings 13 are arranged between the abutting surfaces of the two ends of the bearing housing 41 and the center guide body 42, and the joint of the bearing housing 41 and the center guide body 42 is sealed through the arrangement of the sealing rings 13, so that oil in the high-pressure cavity 5 is prevented from leaking out of a gap between the bearing housing 41 and the center guide body 42.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. A high pressure multi-point loaded oil bearing comprising:
The bearing body (4), the guide shaft (32) is slidably arranged in the bearing body (4);
The high-pressure cavity (5) is arranged in the bearing body (4) and is suitable for storing oil and conveying the oil into the hydrostatic cavity groove (6), and the groove depth of the groove of the high-pressure cavity (5) is larger than that of the hydrostatic cavity groove (6);
The static pressure cavity groove (6) is circumferentially arranged on the inner wall, facing the guide shaft (32), of the bearing body (4) in a surrounding manner to form a static pressure cavity with the guide shaft (32), oil in the static pressure cavity groove (6) forms a high-pressure oil film ring on the outer wall of the guide shaft (32), and the guide shaft (32) is suspended in the bearing body (4) by the high-pressure oil film ring;
the oil inlet (7) is communicated with the high-pressure cavity (5) and is suitable for conveying oil into the high-pressure cavity (5);
the oil outlet (8) is communicated with the hydrostatic cavity groove (6) and is suitable for discharging oil in the hydrostatic cavity groove (6) from the oil outlet (8);
a plurality of jet holes (9) are formed between the high-pressure cavity (5) and the static pressure cavity groove (6), the jet holes (9) are arranged around the periphery of the guide shaft (32), the high-pressure cavity (5) is communicated with the static pressure cavity groove (6) through the jet holes (9), and oil enters the static pressure cavity through the jet holes (9).
2. High pressure multi-point loaded oil bearing according to claim 1, characterized in that the jet aperture (9) opens out towards the opening of one end of the high pressure chamber (5).
3. The high-pressure multipoint loading oil floating bearing according to claim 1, wherein an oil collecting ring groove (10) is formed in the inner side wall, close to the oil outlet (8), of the bearing body (4), the side wall of the bearing body (4) between the oil collecting ring groove (10) and the hydrostatic cavity groove (6) is in clearance seal with a guide shaft (32), and the oil outlet (8) and the oil collecting ring groove (10) are communicated.
4. A high-pressure multipoint loading oil floating bearing according to claim 3, wherein oil seals (11) are arranged on inner side walls of two ends of the bearing body (4), and the oil seals (11) are abutted against the guide shafts (32).
5. The high-pressure multi-point loading oil bearing according to claim 1, wherein the bearing body (4) comprises a bearing housing (41) and a central guide body (42), the high-pressure cavity (5) is positioned between the bearing housing (41) and the central guide body (42), and the joints of the two ends of the bearing housing (41) and the central guide body (42) are sealed.
6. The high-pressure multi-point loading oil bearing according to claim 5, wherein sealing end covers (12) are arranged on two ends of the bearing shell (41) and the center guide body (42), and the sealing end covers (12) are detachably connected to the bearing shell (41) and the center guide body (42).
7. The high-pressure multipoint loaded oil bearing according to claim 5, wherein sealing rings (13) are arranged between abutting surfaces at two ends of the bearing housing (41) and the central guide body (42).
8. A vibrating table characterized by comprising a high pressure multi-point loaded oil bearing (31) according to any of the preceding claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111619633.7A CN114352638B (en) | 2021-12-27 | 2021-12-27 | High-pressure multipoint loading oil floating bearing and vibrating table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111619633.7A CN114352638B (en) | 2021-12-27 | 2021-12-27 | High-pressure multipoint loading oil floating bearing and vibrating table |
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| Publication Number | Publication Date |
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| CN114352638A CN114352638A (en) | 2022-04-15 |
| CN114352638B true CN114352638B (en) | 2024-07-16 |
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| CN202111619633.7A Active CN114352638B (en) | 2021-12-27 | 2021-12-27 | High-pressure multipoint loading oil floating bearing and vibrating table |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009143A (en) * | 1998-06-22 | 2000-01-11 | Toyoda Mach Works Ltd | Fluid bearing device |
| CN106546401A (en) * | 2016-11-24 | 2017-03-29 | 苏州东菱振动试验仪器有限公司 | With pre-pressing structure three axial decoupling devices and vibration table |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169609A (en) * | 1996-12-12 | 1998-06-23 | Mitsubishi Heavy Ind Ltd | Static pressure bearing for hydraulic servo cylinder |
| CN102042281B (en) * | 2011-01-11 | 2012-12-12 | 浙江大学 | Oil cylinder of static pressure vibration exciter |
| CN105179482A (en) * | 2015-09-21 | 2015-12-23 | 宁波朗曼达工具有限公司 | Static-dynamic pressure main shaft |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009143A (en) * | 1998-06-22 | 2000-01-11 | Toyoda Mach Works Ltd | Fluid bearing device |
| CN106546401A (en) * | 2016-11-24 | 2017-03-29 | 苏州东菱振动试验仪器有限公司 | With pre-pressing structure three axial decoupling devices and vibration table |
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| CN114352638A (en) | 2022-04-15 |
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Address after: 215000 No.2 Longshan Road, science and Technology City, high tech Zone, Suzhou City, Jiangsu Province Patentee after: Suzhou Dongling Testing Equipment Co.,Ltd. Country or region after: China Address before: 215000 No.2 Longshan Road, science and Technology City, high tech Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU SILIYO S & T Co.,Ltd. Country or region before: China |
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