CN1076799C - Wheel-type linear moving bearing without lubrication - Google Patents
Wheel-type linear moving bearing without lubrication Download PDFInfo
- Publication number
- CN1076799C CN1076799C CN99109832A CN99109832A CN1076799C CN 1076799 C CN1076799 C CN 1076799C CN 99109832 A CN99109832 A CN 99109832A CN 99109832 A CN99109832 A CN 99109832A CN 1076799 C CN1076799 C CN 1076799C
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- annular shape
- ring
- fixed piece
- bearing
- spare
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Abstract
The present invention relates to a wheel-type linear moving bearing without lubrication, which comprises an outer fixed piece in an annular shape, an inner fixed piece in an annular shape, and at least two cylindrical spiral extension springs. The inner fixed piece in the annular shape is concentrically positioned in the outer fixed piece in the annular shape, the two cylindrical spiral extension springs are in a radial shape, and both ends are respectively connected to the outer fixed piece in the annular shape and the inner fixed piece in the annular shape; furthermore, at least one end is movably and rotationally connected with the outer fixed piece in the annular shape or the inner fixed piece in the annular shape, and the inner fixed piece in the annular shape, the outer fixed piece in the annular shape, and the cylindrical spiral extension spring are made of fine conductive materials or coated with the fine conductive mate on the surfaces. The bearing structure has the advantages of simplicity and small size, can greatly reduce friction area, does not need to be lubricated by oil or grease, and can support linear motion.
Description
The present invention relates to a kind of linear moving bearing without lubrication, particularly a kind of wheel-type linear moving bearing without lubrication that can bear unidirectional and/or bi-directional axial thrust, straight reciprocating motion is provided.
The unlubricated bearing that is made of barrel surface and bearing shell can turn round under the friction surface state of unlubricated oil (or fat), and the supporting to rotatablely moving is provided.The barrel surface and the bearing shell that are characterized in bearing rub, and the friction surface area is big, in order to reduce friction, often adopt antifriction material to make.Also should consider suitable width-diameter ratio during design so that heat radiation and discharge abrasive dust.The temperature rise meeting that the friction of this unlubricated bearing causes forms restriction to running speed and load, also can cause damage of the bearing or make bearing failure because of friction, as scratch, abrasive wear, seizure, fatigue, peel off, burn into corrodes or the like, in addition, it is not used in the supporting to straight reciprocating motion usually.
Knownly can provide straight-line bearing that rolling bearing is arranged, promptly spin in the bearing or roller are done circulation or acyclic straight reciprocating motion in bearing shell.This bearing replaces sliding friction with rolling friction, though the friction of rolling friction is less than sliding friction, but it still needs to lubricate, and when making the high frequency linear reciprocating motion, spin or roller the rolling inefficacy may take place and bearing is caused scuffing and influences the bearing supporting.The failure mode of rolling bearing mainly contains fatigue flake, excessive permanent deformation and wearing and tearing.
Knownly can provide straight-line unlubricated nothing wearing and tearing linear motion bearing, have flat unlubricated nothing that the elastic plate of spiral groove the forms linear motion bearing that weares and teares by the surface by a kind of.The radial rigidity of this flat unlubricated nothing wearing and tearing linear motion bearing is big, axial dimension is little, axial elasticity good, and the flat nothing wearing and tearing linear motion bearing power consumption simple in structure, no of elastic plate composition.But the stroke that it provides is subjected to the restriction of diameter, and is generally all smaller.Bigger if desired movement travel must be done the diameter of bearing very big, thereby has strengthened the weight of bearing.And this bearing the strain capacity of every elastic plate is identical at the volley, all equal stroke, to big stroke operating mode and/or when making the high frequency linear reciprocating motion, the ess-strain power at spiral groove place is concentrated, and easily tearing of elastic plate is taken place and causes the inefficacy of bearing.The failure mode of this bearing mainly contains fatigue fracture, excessive permanent deformation etc.
Knownly can provide straight-line unlubricated nothing wearing and tearing linear motion bearing to also have electrostatic bearing, magnetic bearing etc., the former utilizes electric field force to make axle suspension floating, and the The latter magnetic force makes axle suspension floating; The former needs very large electric field strength, and structure is more complicated also, and application is restricted, and only uses in instrument such as gyroscope at present; The latter also has some shortcomings, for example needs control loop, complex structure, volume bigger or the like.In addition, they are mainly used in rotary bearing.
The objective of the invention is to overcome the deficiency of above-mentioned bearing, and provide a kind of wheel-type linear moving bearing without lubrication that can bear unidirectional and/or bi-directional axial thrust, straight reciprocating motion is provided, it can not only accomplish need not lubricant oil or fat, and can provide straight-line supporting, bearing has high fatigue life.In addition, can also accomplish accurate localization, and elasticity and/or excellent conducting performance can be provided as required.
Embodiment of the present invention is as follows:
Wheel-type linear moving bearing without lubrication provided by the invention, it is characterized in that: comprise ring internal fixation spare, ring outer fixing spare and at least two cylinder type spiral stretching springs, ring internal fixation spare is positioned among the ring outer fixing spare with one heart, described at least two cylinder type spiral stretching springs radially, its two ends are connected on ring internal fixation spare and the ring outer fixing spare, and at least one end of each root cylinder type spiral stretching spring adopts rotary moveable to be connected with ring internal fixation spare or ring outer fixing spare; Inside and outside fixed block of ring and/or cylinder type spiral stretching spring adopt good conductive material to make and/or at the good conductive material of its surface-coated.
Two kinds of forms are arranged during use: 1. ring outer fixing spare is fixed on parts (being equivalent to bearing shell) as stator, and the axle of moving linearly or parts and ring internal fixation spare are fixedly connected and become mover (being equivalent to axle journal); 2. ring internal fixation spare is fixed on the parts as stator, and the axle of moving linearly or parts and ring outer fixing spare are fixedly connected and become mover.In use, stator is supported by the several spiral stretching springs that are connected the inside and outside fixed block of ring with the mutual motion of mover spare, straight-line displacement amount promptly is the axial strain amount of cylinder type spiral stretching spring as cantilever, and the cylinder type spiral stretching spring satisfies the relative displacement of mover and stator by radial drawing and axial bending.All adopt point or line to be slidingly connected between the inside and outside fixed block of cylinder type spiral stretching spring and ring, use the friction of mid point or line minimum, can not produce temperature rise or wearing and tearing and influence performance in mutual wearing and tearing.
Owing to adopt such scheme, can reduce the area that rubs greatly, do not need oil or grease lubrication, and realize straight-line supporting.Be characterized in simple in structure, volume is little, need not lubricate.When material that in addition can be by adopting the different inside and outside fixed blocks of ring and/or cylinder type spiral stretching spring material, can also provide required electrical property.For example: when requiring insulation, inside and outside fixed block adopts the insulating material manufacturing; When needing electric conductivity, inside and outside fixed block of ring and cylinder type spiral stretching spring adopt good conductive material to make or at the good conductive material of its surface-coated.
Further describe the present invention below in conjunction with drawings and Examples:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is a kind of form schematic representation that the cylinder type spiral stretching spring is connected with the inside and outside fixed block employing of ring rotary moveable.
Ring outer fixing spare 1 ring internal fixation spare 2
End hook 31
Know by Fig. 1, wheel-type linear moving bearing without lubrication provided by the invention, it is characterized in that: comprise ring outer fixing spare 1, ring internal fixation spare 2 and at least two cylinder type spiral stretching springs 3, ring internal fixation spare 2 is positioned among the ring outer fixing spare 1 with one heart, described at least two cylinder type spiral stretching springs 3 radially, its two ends are connected on ring outer fixing spare 1 and the ring internal fixation spare 2, and each cylinder type spiral stretching spring 3 has at least an end to be rotatably connected with ring outer fixing spare 1 or the 2 employing activities of ring internal fixation spare.
Cylinder type spiral stretching spring quantity can be 2 or many, and is for guaranteeing reliable operation, the most handy more than 3.
Fig. 2 shows a kind of mode that cylinder type spiral stretching spring 3 is connected with inside and outside fixed block 2, the 1 employing rotary moveable of ring, as can be seen, fixing semicircular ring 11 on the interior ring-side wall of ring outer fixing spare 1, the end hook 31 that cylinder type spiral stretching spring 3 ends are provided with is enclosed within the semicircular ring 11, can reach cylinder type spiral stretching spring 3 and be connected with the rotary moveable of 1 of ring outer connector; Certain cylinder type spiral stretching spring 3 is connected with the rotary moveable of 2 of ring interconnecting pieces with 1 of ring outer connector and cylinder type spiral stretching spring 3 all can adopt this flexible connection form; Fixing semicircular ring 11 also on the interior ring-side wall of ring outer fixing spare 1, the annulus end is made in cylinder type spiral stretching spring 3 ends, on the interior ring-side wall of ring outer fixing spare 1 fixedly the annulus end of semicircular ring 11 and cylinder type spiral stretching spring 3 adopt ring to be connected with the shell-like of encircling, also can realize 2 of cylinder type spiral stretching spring 3 and ring interconnecting pieces or be connected with the rotary moveable of 1 of ring outer connector.
The present invention also can provide elasticity and/or excellent conducting performance when unlubricated nothing wearing and tearing rolling bearing for straight line movement is provided, also can provide accurate locating function.
When using the present invention to reach the elasticity requirement, can be according to required elasticity requirement, the silk footpath of selection cylindroid helicalcoil extension spring, spring parameter, number of springs, material or the like.
When using the present invention to reach accurate locating function, then can utilize the suitable tool that is installed, the position by adjusting ring outer fixing spare and the pretightening force of cylinder type spiral stretching spring, make ring internal fixation spare accurately be suspended in ring outer fixing spare center.
Use the present invention to change static state into and electrically connect dynamically electrically connecting (dragging lead-in wire etc. as brush or the electricity that uses in the motor), for example: when requiring insulation, inside and outside fixed block adopts the insulating material manufacturing; When needing electric conductivity, inside and outside fixed block of ring and cylinder type spiral stretching spring adopt good conductive material to make or at the good conductive material of its surface-coated.
Claims (2)
1. wheel-type linear moving bearing without lubrication, it is characterized in that: comprise ring outer fixing spare, ring internal fixation spare and at least two root cylinder type spiral stretching springs, ring internal fixation spare is positioned among the ring outer fixing spare with one heart, described at least two cylinder type spiral stretching springs radially, its two ends are connected on ring outer fixing spare and the ring internal fixation spare, and have at least an end to be rotatably connected with ring outer fixing spare or ring internal fixation spare employing activity.
2. by the described wheel-type linear moving bearing without lubrication of claim 1, it is characterized in that: inside and outside fixed block of ring and/or cylinder type spiral stretching spring adopt good conductive material to make and/or at the good conductive material of its surface-coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109832A CN1076799C (en) | 1999-07-16 | 1999-07-16 | Wheel-type linear moving bearing without lubrication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109832A CN1076799C (en) | 1999-07-16 | 1999-07-16 | Wheel-type linear moving bearing without lubrication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1281103A CN1281103A (en) | 2001-01-24 |
| CN1076799C true CN1076799C (en) | 2001-12-26 |
Family
ID=5274185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99109832A Expired - Fee Related CN1076799C (en) | 1999-07-16 | 1999-07-16 | Wheel-type linear moving bearing without lubrication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076799C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4607492A (en) * | 1983-11-30 | 1986-08-26 | Max-Planck-Gesellschaft | Linear adjusting device |
| JPH04370413A (en) * | 1991-06-19 | 1992-12-22 | Nissin Electric Co Ltd | Linearly moving shaft supporting mechanism |
| DE4420596A1 (en) * | 1993-11-12 | 1995-05-18 | Korea Machinery & Metal Inst | Lateral vibration damper for rotating shaft |
-
1999
- 1999-07-16 CN CN99109832A patent/CN1076799C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4607492A (en) * | 1983-11-30 | 1986-08-26 | Max-Planck-Gesellschaft | Linear adjusting device |
| JPH04370413A (en) * | 1991-06-19 | 1992-12-22 | Nissin Electric Co Ltd | Linearly moving shaft supporting mechanism |
| DE4420596A1 (en) * | 1993-11-12 | 1995-05-18 | Korea Machinery & Metal Inst | Lateral vibration damper for rotating shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1281103A (en) | 2001-01-24 |
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