CN202468682U - Planar self-balancing eccentric shaft - Google Patents
Planar self-balancing eccentric shaft Download PDFInfo
- Publication number
- CN202468682U CN202468682U CN 201220108342 CN201220108342U CN202468682U CN 202468682 U CN202468682 U CN 202468682U CN 201220108342 CN201220108342 CN 201220108342 CN 201220108342 U CN201220108342 U CN 201220108342U CN 202468682 U CN202468682 U CN 202468682U
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- Prior art keywords
- eccentric
- shelves
- plane
- screw
- eccentric shaft
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- Expired - Fee Related
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Abstract
The utility model discloses a planar self-balancing eccentric shaft. An arc-shaped circle is cut and a cutting plane is left on a same eccentric side of a connecting gear and an eccentric bearing gear of the eccentric shaft in the prior art, so that a center of mass of the connecting gear deviates from the opposite side (relative to a rotating central line) of the eccentric bearing gear, and the eccentric inertia moment generated by the connecting gear is equal to the eccentric inertia moment generated by the eccentric bearing gear, but the directions are opposite, and the self-rotating eccentric inertia moment of the eccentric shaft is self-balanced. The outer flywheel balancing design of the self-rotating eccentric inertia moment of the eccentric shaft in the prior art is changed into a self-balancing design inside the eccentric shaft; and therefore, an eccentric balance block on an outer flywheel can be avoided. The planar self-balancing eccentric shaft is high in balancing precision, can be easily detected and controlled, simplifies the structure reduces the manufacturing cost of equipment and saves the operating cost.
Description
Technical field
The utility model relates to the broken disintegrator technical field of jaw, a kind of plane 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 big to the normal operation harm 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 general jaw bankruptcy article are not all done the balance detection when dispatching from the factory.Therefore, the existing technology jaw is broken in use, and eccentric vibration can make related components produce fatigue damage, reduces its working life, and the screw that wherein connects disintegrator and stand ruptures easily, changes frequent; 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 plane 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 plane 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, be positioned at capacity eccentric bearing shelves eccentric side on the described connection shelves relatively and be provided with one and cut the plane that the said center line that cuts the plane 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 said eccentric moment that connects 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, be in the eccentric shaft neutral position and link to each other with the capacity eccentric bearing shelves on both sides be connected shelves, only play interconnect function; Perhaps be that its shaft axis is arranged at the same side of capacity eccentric bearing shelves from easy to process or custom.Connect shelves and capacity eccentric bearing shelves and all produce eccentric moment of inertia, and come balance by the flywheel eccentric balancing blocks of outer installment jointly.
The technological scheme of the utility model is the arc circle (stay all and scabble face) of pruning of connection shelves and the same eccentric side of capacity eccentric bearing shelves in the existing technology eccentric shaft, makes the barycenter that connects shelves toward the offside skew 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 both sides two capacity eccentric bearing shelves weight sum, m
1Be eccentric centre distance, G
2For connecting shelves weight, m
2For connecting the eccentric centre distance of shelves).
Like this, connect the eccentric moment of inertia that shelves produce and just equate, but in the opposite direction, realized the homeostasis of the rotation eccentric moment of inertia of eccentric shaft, exempted the eccentric balancing blocks on the flywheel with the eccentric moment of inertia of capacity eccentric bearing shelves generation.
The structure characteristic of the utility model is: 1. internal feature: connecting the plane of cutting of leaning on eccentric center line one side of capacity eccentric bearing shelves to be provided with the coupling balance on the shelves, be the remarkable structure characteristic of the utility model; 2. surface: another notable attribute 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 in the eccentric shaft are leaned on eccentric center line one side of capacity eccentric bearing shelves; Eliminate an arc circle quality (become and lack round cylinder) through gold machining; Under the condition of geometrical shape that does not change the connection shelves and geometrical center; The center of mass point that connects shelves is oppositely moved to eccentric center line, utilize reverse eccentric moment of inertia equilibrium principle, realize the eccentric shaft homeostasis.
Beneficial effect: (1) simplified structure.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 (dual 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.
(3) the vibration balancing precision of raising disintegrator.The existing technology eccentric shaft adopts the method that a pair of flywheel reaches 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 disintegrator in the reality 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 then utilizes the precise design and accurately manufacturing to eccentric shaft self, only need detect alone eccentric shaft itself to get final product, and need not make complete machine to disintegrator and detect, and fine setting is also convenient.
(4) if employing makes connection shelves geometrical centers (axle center) shift to eccentric center line offside,, promptly strengthen the diameter of eccentric shaft blank just like the turning radius of increase eccentric shaft, thus increase cost of material and processing cost.
The utility model is under the prerequisite that move not to connect the shelves geometrical center, through eliminating the centroid motion that a quality (the arc circle of pruning is long-pending, stays all and scabbles face) that connects shelves realizes connecting shelves.Both do not increase the turning radius of eccentric shaft, do not increased cost of material again
In like manner, that is to say that the utility model can realize the utility model technological scheme with the eccentric shaft blank or the finished product of existing technology.Both new product can be made, also old product can be transformed.
As preferably, the said plane of cutting is provided with the counterweight lamination, and said counterweight lamination is through regulating screw and regulate locked with bolts, and said adjusting screw is positioned on the plane at said center line place of cutting the plane.
In eccentric shaft manufacturing process, more or less can there be 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 counterweight lamination micro-adjusting mechanism, and the counterweight lamination plays the effect of balance adjustment moment, and superposeing or reduce through the counterweight lamination makes the whole center of mass point front and back that connect shelves be adjusted to the optimum position.
As the alternative of such scheme, the said plane centreline that cuts the plane is provided with a row fine setting hole, and fine setting is equipped with trimming bolt in the hole.
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 micro-adjusting mechanism, and the effect of adjustment trimming moment is played with trimming bolt in the fine setting hole, thereby makes the whole center of mass point front and back that connect shelves be adjusted to the optimum position through increasing or reduce fine adjustment screw in the fine setting hole.
As preferably, the number in said fine setting hole is an odd number; The trimming bolt that is equipped with is that the benchmark bilateral symmetry is arranged with the fine setting hole of centre.
The easy both sides of odd number equivalent is distributed.
As preferably, connect shelves and be provided with the screw that radially runs through its center, the screw direction of said screw is perpendicular with the center line that cuts the plane, is provided with in the said screw and its screw with a pair of moment fine setting of screw-thread fit.
Aforementioned mostly all is to regulate at the eccentric direction of eccentric shaft, and in the middle of practical adjustments, off-centre takes place the left and right side of eccentric shaft easily, and the balance that as above micro-adjusting mechanism can be adjusted the eccentric shaft left and right side effectively is set, and makes that the eccentric shaft balance quality is higher.
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 the structure sectional view of B-B among Fig. 3;
Fig. 6 is also a kind of structural representation of the utility model;
Fig. 7 is the structure sectional view of C-C among Fig. 6;
Fig. 8 is the structure sectional view of D-D among Fig. 6.
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-cuts the plane, 7-counterweight lamination, and 8-regulates screw, and 9-regulates bolt, and 10-finely tunes the hole, 11-trimming bolt, 12-screw, 13-adjusting screw, 14-stop bit screw.
Embodiment
Embodiment below in conjunction with concrete further explains the utility model.
Embodiment 1: as shown in Figure 2; A kind of plane 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;
Connect and to be positioned at capacity eccentric bearing shelves 4 eccentric sides on the shelves 5 relatively and to be provided with one and to cut plane 6, the center line that cuts plane 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; The eccentric moment of connection shelves 5 equates with the eccentric moment of capacity eccentric bearing shelves 4 but is in the opposite direction.
Embodiment 2: like Fig. 3 and shown in Figure 4, cut and be provided with counterweight lamination 7 in the plane 6, counterweight lamination 7 is regulated screw 8 and is positioned on the center line that cuts plane 6 through regulating screw 8 and regulating bolt 9 lockings.All the other are with embodiment 1.
Embodiment 3: as shown in Figure 5, and connect shelves 5 and be provided with the screw 12 that radially runs through its center, the screw direction of screw 12 is perpendicular with the center line that cuts plane 6, is provided with in the screw 12 and its screw with a pair of moment fine setting of 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 13 and stop bit screw 14 together.All the other are with embodiment 2.
Embodiment 4: like Fig. 6 and shown in Figure 7, cut plane 6 center lines and be provided with row totally 3 fine setting holes 10, fine setting is equipped with trimming bolt 11 in the hole 10.All the other are with embodiment 1.
Embodiment 5: as shown in Figure 8, and connect shelves 5 and be provided with the screw 12 that radially runs through its center, the screw direction of screw 12 is perpendicular with the center line that cuts plane 6, is provided with in the screw 12 and its screw with a pair of moment fine setting of 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 13 and stop bit screw 14 together.All the other are with embodiment 4.
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 equates with the eccentric moment of capacity eccentric bearing shelves but is in the opposite direction.
Claims (5)
1. plane 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, be positioned at capacity eccentric bearing shelves eccentric side on the described connection shelves relatively and be provided with one and cut the plane that the said center line that cuts the plane 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 said eccentric moment that connects shelves equates with the eccentric moment of capacity eccentric bearing shelves.
2. plane type self balancing eccentric shaft according to claim 1; It is characterized in that; The said plane of cutting is provided with the counterweight lamination, and said counterweight lamination is through regulating screw and regulate locked with bolts, and said adjusting screw is positioned on the plane at said center line place of cutting the plane.
3. plane type self balancing eccentric shaft according to claim 1 is characterized in that, the said plane centreline that cuts the plane is provided with a row fine setting hole, and fine setting is equipped with trimming bolt in the hole.
4. plane type self balancing eccentric shaft according to claim 3 is characterized in that the number in said fine setting hole is an odd number; The trimming bolt that is equipped with is that the benchmark bilateral symmetry is arranged with the fine setting hole of centre.
5. according to claim 1 or 2 or 3 or 4 described plane type self balancing eccentric shafts; It is characterized in that; Connect shelves and be provided with the screw that radially runs through its center; The screw direction of said screw is perpendicular with the center line that cuts the plane, is provided with in the said screw and its screw with a pair of moment fine setting of screw-thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108342 CN202468682U (en) | 2012-03-12 | 2012-03-12 | Planar self-balancing eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220108342 CN202468682U (en) | 2012-03-12 | 2012-03-12 | Planar self-balancing eccentric shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468682U true CN202468682U (en) | 2012-10-03 |
Family
ID=46916841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220108342 Expired - Fee Related CN202468682U (en) | 2012-03-12 | 2012-03-12 | Planar self-balancing eccentric shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468682U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307092A (en) * | 2012-03-12 | 2013-09-18 | 义乌市黑白矿山机械有限公司 | Plane type self-balancing eccentric shaft |
| CN109210070A (en) * | 2017-06-28 | 2019-01-15 | 曼德电子电器有限公司 | Rotating shaft assembly, driver and electric scroll compressor |
-
2012
- 2012-03-12 CN CN 201220108342 patent/CN202468682U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307092A (en) * | 2012-03-12 | 2013-09-18 | 义乌市黑白矿山机械有限公司 | Plane type self-balancing eccentric shaft |
| CN103307092B (en) * | 2012-03-12 | 2016-05-11 | 义乌市黑白矿山机械有限公司 | A kind of plane formula self-balancing eccentric shaft for jaw crusher |
| CN109210070A (en) * | 2017-06-28 | 2019-01-15 | 曼德电子电器有限公司 | Rotating shaft assembly, driver and electric scroll compressor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20170312 |