CN100540924C - A kind of cycloid bearing - Google Patents
A kind of cycloid bearing Download PDFInfo
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- CN100540924C CN100540924C CNB2008100325686A CN200810032568A CN100540924C CN 100540924 C CN100540924 C CN 100540924C CN B2008100325686 A CNB2008100325686 A CN B2008100325686A CN 200810032568 A CN200810032568 A CN 200810032568A CN 100540924 C CN100540924 C CN 100540924C
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- outer ring
- inner ring
- bearing
- ring
- cycloid
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Abstract
The present invention is the structure of a kind of bearing of mechanical industry.A kind of cycloid bearing comprises the inner ring and the outer ring of bearing, and described outer ring is a single-side structural, i.e. the inner ring decentraction of the outer ring of outer ring and outer ring; Described inner ring is: the inner ring of inner ring is the circular hole that matches with axle, and the outer ring of inner ring is the cycloid wheel structure; Engage by pinwheel between described inner ring and the outer ring, described pinwheel is, be clamped in two end caps of inside and outside circle both sides, and between the inside and outside circle slip joint, the axle center of end cap is concentric with the inner ring of outer ring, at least three pins are set between the two end cap, and all pins evenly distribute according to the axle center circumference of the inner ring of outer ring.The present invention starts flexibly, and startability is good, has improved the bearing rotating speed, and bearing capacity and life-span, accurate positioning is reliable, good manufacturability.When bearing the bearing effect, pressure oil can outwards be provided, bearing and oil hydraulic pump organically are combined as a whole, a kind of new multi-functional mechanical basic components are provided.
Description
(1) technical field
The present invention is the basic components of mechanical industry, particularly relates to a kind of structure of bearing.
(2) background technique
Known, bearing commonly used at present mainly contains rolling bearing and sliding bearing two big class bearings.Every class bearing has pluses and minuses.Rolling bearing have surface friction drag little, start flexibly, advantage such as efficient is high, interchangeability is good, shortcoming is that radial dimension is big, impact resistance is poor, noise is big, life-span weak point during high-speed overload, is applicable to medium rotating speed and medium load.The sliding bearing radial dimension is little, rotating accuracy is high, liquid sliding bearing light abrasion, life-span are long.But interchangeability is poor, inconvenient to lubricating requirement height, maintenance.Liquid sliding bearing needs oil supply system, is unsuitable for frequent starting, is applicable to the occasion of low speed underloading or high-speed overload.
The structure of rolling bearing mainly is made up of inner ring, outer ring, rolling element and retainer etc., and Internal and external cycle is annulus, and the Internal and external cycle dead in line.Rolling element is the roller of shapes such as ball, cylinder and pin.Be processed with raceway on Internal and external cycle and the roller surface of contact, prevent that roller from endwisely slipping.Retainer separates each roller, prevents collision friction.Its working principle is that inner ring is fixed on the supporting axle, and the outer ring is fixed in the bearing saddle bore.Supporting axle rotates, and drives inner ring and rotates thereupon, and roller is made the rolling sliding movement, the load of role-taking on axle simultaneously.
But the bearing of prior art still has further improvements, especially for carrying heavier load or/and the occasion that runs up, more than two kinds roll or sliding bearing all is that material mechanism processing and assembling such as metal forms, in load and transmission all is that the direct of retaining element material contacts and friction, when under heavy duty adjustment situation, the operating mode of bearing is very abominable, both influenced the life-span of bearing, also influenced the precision of carrying and operation, therefore, at some load and high speed are required strict especially occasion, requirement can provide a kind of corresponding bearing.
(3) summary of the invention
The objective of the invention is, a kind of bearing structure is provided,, be particularly useful for the occasion of high-speed overload to improve rotating speed, bearing capacity and the life-span of bearing.
The objective of the invention is to be achieved through the following technical solutions:
A kind of cycloid bearing comprises the inner ring and the outer ring of bearing it is characterized in that:
Described outer ring is a single-side structural, i.e. the inner ring decentraction of the outer ring of outer ring and outer ring;
Described inner ring is: the inner ring of inner ring is the circular hole that matches with axle, and the outer ring of inner ring is the cycloid wheel structure;
The inner ring of described inner ring is concentric with the outer ring of outer ring;
Engage by pinwheel between described inner ring and the outer ring;
Described pinwheel is, is clamped in two end caps of inside and outside circle both sides, and is slip joint between the inside and outside circle, and the axle center of end cap is concentric with the inner ring of outer ring, and at least three pins are set between the two end cap, and all pins evenly distribute according to the axle center circumference of the inner ring of outer ring.
The technical program, the inner ring rotation, as the part of inner ring---the outer ring cycloid wheel of inner ring is also rotated, the pin that driving is positioned at pinwheel between the cycloid wheel adjacent teeth rotates, pinwheel rotates in the inner ring circular hole of outer ring unobstructedly, and the outer ring is static, and this structure has played the effect of bearing.And pin is the tooth surface rolling-operation in cycloid wheel, and frictional force is less.
Further, the center of circle of the inner ring of described outer ring upwards is offset with respect to the center of circle of the outer ring of described outer ring, and offers filler opening above collar wall portion, sets out hydraulic fluid port below collar wall portion.Because the outer ring of outer ring and the inner ring decentraction of outer ring, pinwheel in the inner ring of outer ring, move below the enclosed cavity volume that forms with pin less than above, suck oil from the top filler opening and be passed to the below through rotation, oil pressure in the enclosed cavity becomes big gradually, the inner ring of supporting shaft not only has pin but also also has the interior pressure oil of enclosed cavity, pressure oil can provide a support force with flexibility, buffering, and transmission is more steady, improves bearing capacity, life-span and the rotating speed of bearing.
Further, described filler opening and oil outlet pass to fuel tank for easy to connect by pipeline respectively, and be reliable, by pipeline fuel tank linked to each other with oil inlet and outlet, the oily suction that produces that can be diminished gradually by the enclosed cavity of top filler opening sucks automatically, discharges from the below extruding again.
Further, described fuel tank is same fuel tank.Save the place, compact structure uses a fuel tank to get final product.
Further, on described pin, be nested with the roll sleeve that can roll.In order to reduce surface friction drag, on pin, be nested with roll sleeve, become slip by pure slip and add rolling, obviously reduced operating surface friction drag.
Further, the two ends of described pin are to slide or ball means of rolling embedding end cap.This measure also can reduce the friction of pin on the cycloid wheel flank of tooth.
Further, the outer side surface of described pin contacts with the inner ring of outer ring, the inner side surface of described pin and the outer ring of inner ring, the i.e. contact of cycloidal gear teeth surface.So structure can guarantee to form the confining pressure oil pocket of sealing, axle is provided the support force in the sensing axle center of pressure.
Further, described end cap and inside and outside circle both sides sealing.So structure also is the condition that guarantees oil closed cavity.
Further, described pin quantity is Duoed one than the number of teeth on the inner ring cycloid wheel.Thus, circumferentially can the obtaining more steadily of bearing, evenly, comprehensive support force.
Further, at described oil outlet pressure regulator valve is set.The pressure of this technical characteristics can regulate hyperbaric chamber reaches the effect that the control bearing is born magnitude of load.
The beneficial effect and the advantage that the invention provides technological scheme are:
1. start flexibly, startability is good.Because rotating speed is lower, mainly bear load during startup by pin, suitable and rolling bearing supporting, so start flexibly, startability is good.
2. improve the bearing rotating speed, bearing capacity and life-span, accurate positioning is reliable.When running up, this bearing is equivalent to oil pump, the high pressure that the high-voltage oil cavity fluid of sealing produces is born load, and oil pressure is stable and certain elasticity is arranged, and pin is stressed very little, mainly play the centering effect, the direct mechanical wear of bearing inner body reduces, and has increased the supporting effect of pressure oil, so can improve the bearing rotating speed, bearing capacity and life-span, and accurate positioning is reliable.Some special occasions are provided, and high capacity has the bearing structure of being strict with very much to high speed.
3. good manufacturability.Inner ring is the curtate epicycloid wheel, but grinding, good manufacturability.
4. when bearing the bearing effect, can outwards provide pressure oil, play the effect of pressure oil pump.Bearing and oil hydraulic pump organically are combined as a whole, integrate the function of bearing and oil hydraulic pump, constituted a kind of new multi-functional mechanical basic components.
(4) description of drawings
Fig. 1 is the main pseudosection of cycloid bearing of the present invention
Fig. 2 is the side cutaway view of cycloid bearing of the present invention
Among the figure, 1. inner ring, 2. outer ring, 3. roll sleeve, 4. end cap, 5. pin, 6. enclosed cavity, 7. filler opening, 8. oil outlet.
(5) embodiment
Below in conjunction with drawings and Examples, the present invention is elaborated.
A kind of cycloid bearing comprises the inner ring 1 and the outer ring 2 of bearing, and outer ring 2 is a single-side structural, i.e. the inner ring decentraction of the outer ring of outer ring 2 and outer ring 2.The inner ring of inner ring 1 is the circular hole that matches with axle, and the outer ring of inner ring 1 is that the number of teeth is 6 cycloid wheel structure.Engage by pinwheel between inner ring 1 and the outer ring 2, the structure of pinwheel is, be clamped in two end caps 4 of inside and outside circle both sides, and between the inside and outside circle slip joint, the axle center of end cap 4 is concentric with the inner ring of outer ring 2, quantity is set is 5,7 pieces of pins 5 of pin of 7 between the two end cap 4 evenly arranges according to the axle center circumference of the inner ring of outer ring 2.
Working principle: the inner ring of inner ring 1 (bearing hole) is coaxial with the outer ring of outer ring 2, and inner ring 1 rotates around axes O 2 around axes O 1 rotating band plane gear, and the side of the epicycloid flank of tooth of inner ring 1, the inner ring of outer ring 2 and pin 5, front and rear cover 4 constitutes a plurality of oil closed cavities.Low pressure oil is entered the low pressure oil pocket of top by filler opening 7, along with the rotation of inner ring 1 and pinwheel is transported to square hyperbaric chamber, because the volume of hyperbaric chamber is less than the volume of low-pressure cavity, hydraulic oil is compressed the generation high pressure, the oil pressure that hyperbaric chamber produces acts on the inner ring 1 inner ring 1 and the axle that supported thereof is held up, and bears radial load.The oil outlet 8 of hyperbaric chamber connects the pressure of relief valve can regulate hyperbaric chamber, reaches the size that the control bearing is born load.
Simultaneously, bearing and oil hydraulic pump organically are combined as a whole, integrate the function of bearing and oil hydraulic pump, constituted a kind of new multi-functional mechanical basic components.
Claims (10)
1. cycloid bearing comprises the inner ring and the outer ring of bearing it is characterized in that:
Described outer ring is a single-side structural, i.e. the inner ring decentraction of the outer ring of outer ring and outer ring;
Described inner ring is: the inner ring of inner ring is the circular hole that matches with axle, and the outer ring of inner ring is the cycloid wheel structure;
The inner ring of described inner ring is concentric with the outer ring of outer ring;
Engage by pinwheel between described inner ring and the outer ring,
Described pinwheel is, is clamped in two end caps of inside and outside circle both sides, and is slip joint between the inside and outside circle, and the axle center of end cap is concentric with the inner ring of outer ring, and at least three pins are set between the two end cap, and all pins evenly distribute according to the axle center circumference of the inner ring of outer ring.
2. cycloid bearing according to claim 1, the center of circle of inner ring that it is characterized in that described outer ring be with respect to the upwards skew of the center of circle of the outer ring of described outer ring, and offer filler opening above collar wall portion, sets out hydraulic fluid port below collar wall portion.
3. cycloid bearing according to claim 2 is characterized in that described filler opening and oil outlet pass to fuel tank by pipeline respectively.
4. cycloid bearing according to claim 3 is characterized in that described fuel tank is same fuel tank.
5. cycloid bearing according to claim 1 is characterized in that being nested with the roll sleeve that can roll on described pin.
6. cycloid bearing according to claim 1, the two ends that it is characterized in that described pin are to slide or ball means of rolling embedding end cap.
7. cycloid bearing according to claim 1 is characterized in that the outer side surface of described pin contacts with the inner ring of outer ring, the inner side surface of described pin and the outer ring of inner ring, the i.e. contact of cycloidal gear teeth surface.
8. cycloid bearing according to claim 1 is characterized in that described end cap and inside and outside circle both sides sealing.
9. cycloid bearing according to claim 1 is characterized in that described pin quantity Duos one than the number of teeth on the inner ring cycloid wheel.
10. cycloid bearing according to claim 1 is characterized in that at described oil outlet pressure regulator valve being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100325686A CN100540924C (en) | 2008-01-11 | 2008-01-11 | A kind of cycloid bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100325686A CN100540924C (en) | 2008-01-11 | 2008-01-11 | A kind of cycloid bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101216067A CN101216067A (en) | 2008-07-09 |
| CN100540924C true CN100540924C (en) | 2009-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100325686A Expired - Fee Related CN100540924C (en) | 2008-01-11 | 2008-01-11 | A kind of cycloid bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN100540924C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195794B (en) * | 2013-04-18 | 2015-04-22 | 苏州市东吴滚针轴承有限公司 | Punching needle roller bearing with oscillating function |
-
2008
- 2008-01-11 CN CNB2008100325686A patent/CN100540924C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 变速传动轴承性能优化的思路分析. 王惠娟.沿海企业与科技，第6期. 2005 |
| 变速传动轴承性能优化的思路分析. 王惠娟.沿海企业与科技，第6期. 2005 * |
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| Publication number | Publication date |
|---|---|
| CN101216067A (en) | 2008-07-09 |
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Granted publication date: 20090916 Termination date: 20120111 |