CN202468683U - Cylindrical self-balancing eccentric shaft - Google Patents
Cylindrical self-balancing eccentric shaft Download PDFInfo
- Publication number
- CN202468683U CN202468683U CN 201220108344 CN201220108344U CN202468683U CN 202468683 U CN202468683 U CN 202468683U CN 201220108344 CN201220108344 CN 201220108344 CN 201220108344 U CN201220108344 U CN 201220108344U CN 202468683 U CN202468683 U CN 202468683U
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- China
- Prior art keywords
- eccentric
- shelves
- center line
- fine setting
- eccentric shaft
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- Expired - Fee Related
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Abstract
The utility model discloses a cylindrical self-balancing eccentric shaft. The center line of a connection lever in the eccentric shaft is opposite to the center line of an eccentric bearing lever instead of being arranged in the same direction with the central line of the concentric bearing lever (or being overlapped with the rotation center line); and the self-balancing of the eccentric inertia spin moment of the eccentric shaft is realized by use of the reverse eccentric inertia moment balancing principle. The spin eccentric inertia moment of the eccentric shaft in the prior art is changed into the self-balancing design in the eccentric shaft from the original flywheel balance design needing external help. An eccentric balance block on the external flywheel also can be removed. The cylindrical self-balancing eccentric shaft disclosed by the utility model has high balancing precision and simple structure, is easy to detect and control, reduces the manufacturing cost of equipment, and lowers the operation cost.
Description
Technical field
The utility model relates to the jaw crusher technical field, a kind of column type self balancing eccentric shaft of more specifically saying so.
Background technique
Jaw crusher, it is broken to be commonly called as jaw, is one of with the longest history, most popular disintegrating apparatus.Eccentric shaft is most crucial parts in the broken equipment of jaw, and the jaw in the broken broken pair of jaw designs once the off-centre that the fragmentation campaign of a tight pine comes from eccentric shaft when broken material.
The existing technology eccentric shaft has two center lines (referring to Fig. 1): 1. rotation centerline, the i.e. center line at the place, axle center of concentric bearings shelves, locking shelves and benchmark shelves; 2. eccentric center line, the i.e. center line at capacity eccentric bearing shelves and the place, axle center that is connected shelves.The work done mechanism of eccentric shaft is: when motor is axle center when doing rotation through the vee belt with the rotation centerline with driving eccentric shaft after flywheel on the benchmark shelves links to each other, the capacity eccentric bearing shelves then drive cover moving jaw on it and do a tight pine motion and carry out broken work done.
The off-centre design of eccentric shaft also brings " rotation eccentric moment of inertia " when satisfying the broken broken work done of jaw, produce eccentric vibration, and eccentric vibration is very harmful to the normal operation of machinery, and is totally unfavorable to disintegrator.In order to overcome above-mentioned defective; The existing technology jaw is broken, and (wherein one is provided with the v belt groove through setting up a pair of flywheel; Have the power transmission function concurrently; Claim sheave again), and the eccentric moment of inertia (the equilibrium block orientation, place on the flywheel is opposite with the off-centre on the eccentric shaft, and eccentric moment equates) that an equilibrium block comes the balance eccentric shaft is being set on the flywheel.
The method that above-mentioned prior art solves eccentric vibration has the following disadvantages: 1. need increase a pair of heavy flywheel and on flywheel, acquire eccentric balancing blocks, make the broken mechanism of jaw complicated, increase manufacturing cost and operation wasted work; 2. in the broken device fabrication of jaw, be difficult to detect the levels of precision (eccentric block shortage in weight or surpass and eccentric orientation has error all can produce eccentric vibration) of its moment of inertia balance, so all do not do the balance detection before general jaw bankruptcy article dispatch from the factory.Also just because of this, the existing technology jaw is broken in use, eccentric vibration can make related components produce fatigue damage, reduces its working life, the screw that wherein connects disintegrator and stand ruptures easily, changes frequently; Eccentric moment of inertia then increases wasted work and produces noise because of vibration.
The model utility content
The purpose of the utility model is to overcome the above-mentioned defective of existing technology, provide a kind of balance quality high, be prone to detect, the column type self balancing eccentric shaft of easy to control, designs simplification, reduction device fabrication and operating cost.
In order to reach above purpose; The utility model is realized through following technological scheme: a kind of column type self balancing eccentric shaft; By from the inside to surface successively symmetry be connected the capacity eccentric bearing shelves, concentric bearings shelves, locking shelves and the benchmark shelves that connect the shelves both sides and form jointly, the shaft axis of said concentric bearings shelves, locking shelves and benchmark shelves is positioned on the rotation centerline of bearing; The shaft axis of said capacity eccentric bearing shelves is positioned on the eccentric center line of bearing; It is characterized in that described connection shelves shaft axis is positioned at the offside of the eccentric center line of capacity eccentric bearing shelves with respect to rotation centerline, the eccentric moment of said connection shelves equates with the eccentric moment of capacity eccentric bearing shelves.
The existing technology eccentric shaft has two center lines; Be rotation centerline and eccentric center line; The shelves that are connected that are in the eccentric shaft neutral position and link to each other with the capacity eccentric bearing shelves on both sides only play interconnect function; Perhaps be from easy to process and custom, its center line is to be arranged on the eccentric center line of capacity eccentric bearing shelves.Connect shelves and capacity eccentric bearing shelves and all produced eccentric moment of inertia, and come balance by the eccentric balancing blocks on the flywheel of outer installment jointly.
The technological scheme of the utility model is with the existing technology eccentric shaft, is in the shelves that are connected of same center line by former and eccentric shelves, changes to be designed to and the offside of capacity eccentric bearing shelves with respect to rotation centerline.The definite of its throw of eccentric value should satisfy the requirement of eccentric moment of inertia balance.Eccentric moment of inertia equation of equilibrium: G
1* m
1=G
2* m
2, (G wherein
1Be the capacity eccentric bearing shelves weight sum on both sides, m
1Be eccentric centre distance, G
2For connecting shelves weight, m
2For connecting the eccentric centre distance of shelves).
The center line that the utility model will connect shelves changes the offside that designs in eccentric center line, realizes eccentric moment of inertia homeostasis in eccentric shaft.Like this, the eccentric balancing blocks on the outside flywheel just can have been exempted.
Change three center lines into so the remarkable technical characteristics of the utility model is exactly two center lines with the existing technology eccentric shaft, the connection shelves center line of wherein newly establishing is opposite with former eccentric centerline direction, and eccentric moment equates.
The structure characteristic of the utility model is: 1. internal feature: the offside that the barycenter that connects shelves is arranged on eccentric center line is a remarkable structure characteristic of the utility model; 2. surface: another notable feature of the utility model is to have exempted the eccentric balancing blocks on the flywheel.
The core technology of the utility model is: the connection shelves center line in the eccentric shaft is changed into it and oppositely being provided with by (or overlap with rotation centerline setting) formerly is set with capacity eccentric bearing shelves center line in the same way; Utilize reverse eccentric moment of inertia equilibrium principle; Realizing the eccentric shaft homeostasis, is the core technology of the utility model.
Beneficial effect: crusher structure is simplified in (1).Remove the flywheel balancing piece from, reduce the device fabrication cost, and then practice thrift operating cost;
(2) economize merit.Wasted work is necessary cost if the design of the off-centre of eccentric shaft has produced the eccentric moment of inertia of capacity eccentric bearing shelves, then is a kind of waste by connecting a grade eccentric moment of inertia wasted work that is produced so; On flywheel, set up eccentric balancing blocks again and come balance with it, increased a new work done factor again.The utility model has been realized the eccentric shaft homeostasis, has removed the flywheel balancing piece from, has eliminated dual work done factor, has improved the working efficiency of disintegrator.
(2) the vibration balancing precision of raising disintegrator.The existing technology eccentric shaft adopts the method for a pair of flywheel through external balance of setting up; In manufacturing and assembly process, be difficult to realize the accurate balance of eccentric moment of inertia; Also be difficult to detection and enforcement fine setting through whole set equipment; So the existing technology disintegrator designs and makes the off-centre vibration disadvantage of bringing and can not eliminate fully because of eccentric shaft is eccentric, some product even serious the existence.
The self balancing eccentric shaft passes through the precise design to eccentric shaft self, the accurate manufacturing processed, and only need detect alone eccentric shaft itself to get final product, and need not do the complete machine detection to disintegrator, and fine setting makes things convenient for also.
As preferably, the said shelves that connect are provided with the in-line fine setting screw that runs through it, and the center line of said fine setting screw is positioned on the plane at the two place of rotation centerline of eccentric center line and concentric bearings shelves of capacity eccentric bearing shelves;
Be provided with in the said fine setting screw and its a pair of moment fine adjustment screw with screw-thread fit.
In eccentric shaft manufacturing process, more or less always there are some errors in the processing dimension of the parallelism of rotation centerline and eccentric center line, the degree of eccentricity and each grade of eccentric shaft, and these errors can influence the balance quality of eccentric moment of inertia.Therefore the utility model has designed as above in-line through hole micro-adjusting mechanism, and a pair of eccentric moment fine adjustment screw in the fine setting screw can the mobile position, through its displacement, makes the centroidal moment that connects shelves be adjusted to reach the exact position of eccentric moment balance.The eccentric moment fine adjustment screw is designed to a pair of composite structure, has the interlocking stopping function.
As the alternative of such scheme, said connection shelves are provided with the cross fine setting screw assembly that runs through it, and said cross fine setting screw assembly comprises two mutual vertical but disjoint fine setting screws;
Be provided with in the said fine setting screw and its a pair of moment fine adjustment screw with screw-thread fit.
In eccentric shaft manufacturing process, except that having above-mentioned error, also can on its plane Vertical direction, produce error.Therefore, the utility model has designed cross through hole micro-adjusting mechanism again.Like this can be in 360 ° the exact position of comprehensive fine setting barycenter distance, make the balance of eccentric moment of inertia more accurate.
As preferably, said fine setting screw all radially runs through the center that connects shelves, and the fine setting direction is all perpendicular with the eccentric center line of capacity eccentric bearing shelves.
The fine setting preferred radial direction of screw and vertical with eccentric center line, favourable to processing screw hole, and regulate easily, reach balance quality.
As preferably, wherein the center line of a said fine setting screw is positioned on the plane at the two place of rotation centerline of eccentric center line and concentric bearings shelves of capacity eccentric bearing shelves.
The fine setting screw is regulated more conveniently, easier preferably on this plane, can reach balance quality fast.
Description of drawings
Fig. 1 is a kind of structural representation of existing technology;
Fig. 2 is a kind of structural representation of the utility model;
Fig. 3 is the another kind of structural representation of the utility model;
Fig. 4 is the structure sectional view of A-A among Fig. 3;
Fig. 5 is also a kind of structural representation of the utility model;
Fig. 6 is the structure sectional view of B-B among Fig. 5.
Among the figure: 1-benchmark shelves, 2-are locked shelves, and 3-concentric bearings shelves, 4-capacity eccentric bearing shelves, 5-connect shelves, and 6-finely tunes screw, 7-adjusting screw, 8-stop bit screw.
Embodiment
Embodiment below in conjunction with concrete is further described the utility model.
Embodiment 1: as shown in Figure 2; A kind of column type self balancing eccentric shaft; By from the inside to surface successively symmetry be connected the capacity eccentric bearing shelves 4, concentric bearings shelves 3, locking shelves 2 and the benchmark shelves 1 that connect shelves 5 both sides and form jointly, the axle center of concentric bearings shelves 3 of both sides, locking grades 2 and benchmark shelves 1 is positioned at the rotation centerline O of bearing
1-O
1On, capacity eccentric bearing shelves 4 axle center of both sides are positioned at the eccentric center line O of bearing
2-O
2On; The shaft axis that connects shelves 5 is positioned at capacity eccentric bearing shelves 4 with respect to rotation centerline O
1-O
1The offside of off-centre, the center of mass point N that promptly connects shelves 5 is positioned at the eccentric offside of capacity eccentric bearing shelves 4, the eccentric moment that connects shelves 5 and the eccentric moment of capacity eccentric bearing shelves 4 wait but in the opposite direction mutually.
Embodiment 2: like Fig. 3 and shown in Figure 4, connect shelves 5 and be provided with the in-line fine setting screw 6 that runs through it, the center line of fine setting screw 6 is positioned on the plane at the two place of rotation centerline of eccentric center line and concentric bearings shelves 3 of capacity eccentric bearing shelves 4; Fine setting is provided with and its a pair of moment fine adjustment screw with screw-thread fit in the screw 6, this to the moment fine adjustment screw comprise two cooperatively interact one in front and one in back abut against adjusting screw 7 and stop bit screw 8 together.All the other are with embodiment 1.
Embodiment 3: like Fig. 5 and shown in Figure 6, connect shelves 5 and be provided with the cross fine setting screw assembly that runs through it, cross fine setting screw assembly comprises two mutual vertical but disjoint fine setting screws 6; Be provided with and its a pair of moment fine adjustment screw in the fine setting screw 6 with screw-thread fit.This to the moment fine adjustment screw comprise two cooperatively interact one in front and one in back abut against adjusting screw 7 and stop bit screw 8 together.
All the other are with embodiment 1.
Practical: change with it oppositely setting at the connection shelves of eccentric shaft into by (or overlaps with rotation centerline setting) formerly is set with the capacity eccentric bearing shelves in the same way, utilize reverse eccentric moment of inertia equilibrium principle, realization eccentric shaft homeostasis is the core technology of the utility model.
In above-mentioned adjustment process, make the center of mass point N that connects shelves be positioned at the eccentric offside of capacity eccentric bearing shelves, the shaft axis that promptly connects shelves is positioned at the capacity eccentric bearing shelves with respect to rotation centerline O
1-O
1Eccentric offside, thereby the eccentric moment that to connect shelves equate with the eccentric moment of capacity eccentric bearing shelves, but in the opposite direction.
Claims (5)
1. column type self balancing eccentric shaft; By from the inside to surface successively symmetry be connected the capacity eccentric bearing shelves, concentric bearings shelves, locking shelves and the benchmark shelves that connect the shelves both sides and form jointly; The shaft axis of said concentric bearings shelves, locking shelves and benchmark shelves is positioned on the rotation centerline of bearing, and the shaft axis of said capacity eccentric bearing shelves is positioned on the eccentric center line of bearing; It is characterized in that described connection shelves shaft axis is positioned at the offside of the eccentric center line of capacity eccentric bearing shelves with respect to rotation centerline, the eccentric moment of said connection shelves equates with the eccentric moment of capacity eccentric bearing shelves.
2. column type self balancing eccentric shaft according to claim 1; It is characterized in that; The said shelves that connect are provided with the in-line fine setting screw that runs through it, and the center line of said fine setting screw is positioned on the plane at the two place of rotation centerline of eccentric center line and concentric bearings shelves of capacity eccentric bearing shelves;
Be provided with in the said fine setting screw and its a pair of moment fine adjustment screw with screw-thread fit.
3. column type self balancing eccentric shaft according to claim 1 is characterized in that, the said shelves that connect are provided with the cross fine setting screw assembly that runs through it, and said cross fine setting screw assembly comprises two mutual vertical but disjoint fine setting screws;
Be provided with in the said fine setting screw and its a pair of moment fine adjustment screw with screw-thread fit.
4. column type self balancing eccentric shaft according to claim 3 is characterized in that, said fine setting screw all radially runs through the center that connects shelves, and the fine setting screw direction of said fine setting screw is all perpendicular with the eccentric center line of capacity eccentric bearing shelves.
5. column type self balancing eccentric shaft according to claim 4 is characterized in that, wherein the center line of a said fine setting screw is positioned on the plane at the two place of rotation centerline of eccentric center line and concentric bearings shelves of capacity eccentric bearing shelves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108344 CN202468683U (en) | 2012-03-12 | 2012-03-12 | Cylindrical self-balancing eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108344 CN202468683U (en) | 2012-03-12 | 2012-03-12 | Cylindrical self-balancing eccentric shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468683U true CN202468683U (en) | 2012-10-03 |
Family
ID=46916842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220108344 Expired - Fee Related CN202468683U (en) | 2012-03-12 | 2012-03-12 | Cylindrical self-balancing eccentric shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468683U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307091A (en) * | 2012-03-12 | 2013-09-18 | 义乌市黑白矿山机械有限公司 | Cylinder type self-balancing eccentric shaft |
| CN107543749A (en) * | 2016-06-29 | 2018-01-05 | 广州康昕瑞基因健康科技有限公司 | Blending instrument |
-
2012
- 2012-03-12 CN CN 201220108344 patent/CN202468683U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307091A (en) * | 2012-03-12 | 2013-09-18 | 义乌市黑白矿山机械有限公司 | Cylinder type self-balancing eccentric shaft |
| CN103307091B (en) * | 2012-03-12 | 2016-05-11 | 义乌市黑白矿山机械有限公司 | A kind of column type self-balancing eccentric shaft for jaw crusher |
| CN107543749A (en) * | 2016-06-29 | 2018-01-05 | 广州康昕瑞基因健康科技有限公司 | Blending instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20170312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |