CN103307090A - Groove type self-balancing eccentric shaft - Google Patents
Groove type self-balancing eccentric shaft Download PDFInfo
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- CN103307090A CN103307090A CN2012100729826A CN201210072982A CN103307090A CN 103307090 A CN103307090 A CN 103307090A CN 2012100729826 A CN2012100729826 A CN 2012100729826A CN 201210072982 A CN201210072982 A CN 201210072982A CN 103307090 A CN103307090 A CN 103307090A
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- eccentric
- shelves
- screw
- eccentric shaft
- center line
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Abstract
The invention discloses a groove type self-balancing eccentric shaft. Part of the mass of the same eccentric side of a connecting guard and eccentric bearing guards in an eccentric shaft in the prior art is deducted, namely that the volume of a groove is milled so that the center of mass of the connecting guard shifts toward the opposite side, relative to a rotary center line, of the eccentric bearing guards and the eccentric inertia moment generated by the connecting guard is equal to the eccentric inertia moments generated by the eccentric bearing guards but the directions are opposite, thus achieving self-balancing of the eccentric inertia spin moment of the eccentric shaft. The eccentric inertia spin moment of the eccentric shaft in the prior art is self-balanced by the interior of the eccentric shaft instead of original external flywheels, thus eccentric balance weights on the external flywheels can be omitted. The groove type self-balancing eccentric shaft has high balance precision and a simplified structure, is easy to detect and control, reduces the manufacturing cost of equipment and saves the operating cost.
Description
Technical field
The present invention relates to the jaw crusher technical field, more specifically say a kind of groove type self balancing eccentric shaft.
Background technique
Jaw crusher is commonly called as jaw broken, 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 crushing pair of jaw comes from the off-centre design of eccentric shaft once the fragmentation campaign of a tight pine when broken material.
The prior art 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, i.e. capacity eccentric bearing shelves and be connected the center line at the place, axle center of shelves.The work done mechanism of eccentric shaft is: when motor through the vee belt when driving eccentric shaft after flywheel on the benchmark shelves links to each other and do rotation take rotation centerline as the axle center, the capacity eccentric bearing shelves then drive cover moving jaw thereon and do a tight pine and move 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 vibrating.Eccentric vibrating is very harmful to the normal operation of machinery, and is totally unfavorable to disintegrator.In order to overcome defects, the prior art jaw is broken to be that (wherein one is provided with the v belt groove by setting up a pair of flywheel, have the power transmission function concurrently, claim again sheave), and at flywheel the eccentric moment of inertia that one equilibrium block comes the balance eccentric shaft (eccentric opposite on the orientation, equilibrium block place on the flywheel and the eccentric shaft, and eccentric moment equates) is set.
The method that above-mentioned prior art solves eccentric vibrating has the following disadvantages: 1. need increase the flywheel of a pair of heaviness and acquire eccentric balancing blocks at flywheel, make the broken mechanism of jaw complicated, increase manufacture cost and operation wasted work; 2. in the broken device fabrication of jaw, be difficult to detect the levels of precision (eccentric mass short weight or surpass and eccentric orientation has error all can produce eccentric vibrating) of its moment of inertia balance, detect therefore all do not make balance when general jaw bankruptcy product dispatch from the factory.Therefore, the prior art jaw is broken in use, and eccentric vibrating makes related components produce fatigue damage, reduces its working life, and the screw that wherein connects disintegrator and stand easily ruptures, and changes frequent; Eccentric moment of inertia then increases wasted work and produces noise because of vibration.
Summary of the invention
The object of the invention is to overcome the defects of prior art, the groove type self balancing eccentric shaft of high, the easy detection of a kind of balance quality, easy to control, designs simplification, reduction manufacturing and operating cost is provided.
In order to reach above purpose, the present invention is achieved by the following technical solutions: a kind of groove type self balancing eccentric shaft, by from the inside to surface successively the symmetrical capacity eccentric bearing shelves, concentric bearings shelves, locking shelves and the benchmark shelves that connect the shelves both sides of being connected to jointly form, the shaft axis of described concentric bearings shelves, locking shelves and benchmark shelves is positioned on the rotation centerline of bearing, and the shaft axis of described capacity eccentric bearing shelves is positioned on the eccentric center line of bearing; It is characterized in that, relatively be positioned at capacity eccentric bearing shelves eccentric side on the described connection shelves and be provided with a groove, the center line of described groove is positioned on the plane at the two place of rotation centerline of the eccentric center line of capacity eccentric bearing shelves and concentric bearings shelves; The described eccentric moment that connects shelves equates with the eccentric moment of capacity eccentric bearing shelves.
The prior art eccentric shaft has two center lines, i.e. rotation centerline and eccentric center line are in the eccentric shaft neutral position and only play connection function with the shelves that are connected that the capacity eccentric bearing shelves on both sides join.Perhaps be for easy to process and or custom, its shaft axis that connects shelves is arranged on the eccentric center line of capacity eccentric bearing shelves.Connect shelves and capacity eccentric bearing shelves and all produce eccentric moment of inertia, and jointly come balance by the flywheel eccentric balancing blocks of outer installment.
Technological scheme of the present invention is connection shelves and the same eccentric side subduction of the capacity eccentric bearing shelves part quality (being the volume that a groove is removed in milling) in the prior art 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, the eccentric moment of inertia that connects the shelves generation just equates with the eccentric moment of inertia that the capacity eccentric bearing shelves produce, but opposite direction has been realized the homeostasis of the rotation eccentric moment of inertia of eccentric shaft, thereby has exempted the eccentric balancing blocks on the outside flywheel.
Structure characteristic of the present invention is: 1. internal feature: connecting shelves and be provided with by eccentric center line one side of capacity eccentric bearing shelves the groove of coupling balance, be remarkable structure characteristic of the present invention; 2. surface: another significant feature of the present invention is the eccentric balancing blocks of having exempted on the outside flywheel.
Core technology of the present invention is: the connection shelves in the eccentric shaft are leaned on eccentric center line one side of capacity eccentric bearing shelves, eliminate a quality (become and lack round cylinder) by gold machining, under the condition that does not change geometrical shape, make the center of mass point that connects shelves oppositely mobile 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 device fabrication and 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 produces so; Set up eccentric balancing blocks at flywheel again and come with it balance, increased again a new work done factor.The present invention has 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 prior art eccentric shaft adopts and sets up a pair of flywheel by the method for external balance, is difficult to realize the accurate balance of eccentric moment of inertia in manufacturing and assembly process, also is difficult to detection and enforcement fine setting by whole set equipment.So the prior art disintegrator can not be eliminated fully because of the eccentric vibrating disadvantage that the eccentric Design and manufacture of eccentric shaft brings, some product even serious the existence.
The self balancing eccentric shaft passes through the accurate design of eccentric shaft self and accurately manufacturing, only need detect alone eccentric shaft itself to get final product, and need not do the complete machine detection to disintegrator, and fine setting is also convenient.
(4) if employing will connect the method that shelves geometrical centers (axle center) are shifted to eccentric center line offside, will increase the turning radius of eccentric shaft, namely strengthen the diameter of eccentric shaft blank, thereby increase material and processing cost.The present invention is under the prerequisite of mobile link shelves geometrical center position not, realizes connecting the centroid motion of shelves by eliminating a quality (milling one groove volume) that connects shelves, has not both increased the turning radius of eccentric shaft, does not increase again cost of material.
In like manner, the present invention can realize technical solution of the present invention with eccentric shaft blank or the finished product of prior art.Both new product can be made, old product can be transformed again.
As preferably, be provided with the counterweight lamination in the described groove, described counterweight lamination is by regulating the locking of screw and adjusting bolt, and described adjusting screw is positioned on the described groove bottom land center line.
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 affect the balance quality of eccentric moment of inertia.Therefore the present invention has designed as above counterweight lamination micro-adjusting mechanism, and the counterweight lamination plays the effect of balanced adjustment moment, is adjusted to the optimum position by the stack of counterweight lamination or before and after reducing the center of mass point that makes whole connection shelves.
As the alternative of such scheme, be provided with a row fine setting hole on the described groove bottom land center line, 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 affect the balance quality of eccentric moment of inertia.Therefore the present invention has designed and has as above finely tuned the hole micro-adjusting mechanism, and fine setting hole and trimming bolt play the effect of balanced adjustment moment, thereby by increasing in the fine setting hole or reducing fine adjustment screw so that be adjusted to the optimum position before and after the whole center of mass point that connects shelves.
As preferably, the number in described fine setting hole is odd number; The trimming bolt that is equipped with is arranged take the fine setting hole of centre as the benchmark bilateral symmetry.
The easy both sides of odd number equivalent is distributed.
As preferably, be provided with the screw that radially runs through its center on the connection shelves, the screw direction of described screw and the center line of described groove are perpendicular, are provided with in the described screw and its a pair of moment fine adjustment screw with screw-thread fit.
Aforementioned mostly all is to regulate at the eccentric direction of eccentric shaft, and in practical adjustments, off-centre easily occurs the left and right side of eccentric shaft, the balance that as above micro-adjusting mechanism can be adjusted the eccentric shaft left and right side effectively is set, so that the eccentric shaft balance quality is higher.
Description of drawings
Fig. 1 is a kind of structural representation of prior art;
Fig. 2 is a kind of structural representation of the present invention;
Fig. 3 is another kind of structural representation of the present invention;
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 present invention;
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, the 6-groove, and 7-counterweight lamination, 8-regulates screw, the 9-adjusting bolt, 10-finely tunes the hole, 11-trimming bolt, 12-screw, 13-adjusting screw, 14-stop bit screw.
Embodiment
Below in conjunction with specific embodiment the present invention is further detailed.
Embodiment 1: as shown in Figure 2, a kind of groove type self balancing eccentric shaft, by from the inside to surface successively the symmetrical capacity eccentric bearing shelves 4, concentric bearings shelves 3, locking shelves 2 and the benchmark shelves 1 that connect shelves 5 both sides of being connected to jointly form, the axle center of the concentric bearings shelves 3 of both sides, locking shelves 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 relatively to be positioned at capacity eccentric bearing shelves 4 eccentric sides on the shelves 5 and to be provided with a groove 6, the center line of groove 6 is positioned on the plane at the two place of rotation centerline of the eccentric center line of capacity eccentric bearing shelves 4 and concentric bearings shelves 3; Namely so that the center of mass point N of connection shelves 5 is positioned at the eccentric offside of capacity eccentric bearing shelves 4, the eccentric moment that connects shelves 5 equates but opposite direction with the eccentric moment of capacity eccentric bearing shelves 4.
Embodiment 2: as shown in Figure 3 and Figure 4, be provided with counterweight lamination 7 in the groove 6, counterweight lamination 7 is regulated screw 8 and is positioned on the groove 6 bottom land center lines by regulating screw 8 and adjusting bolt 9 lockings.All the other are with embodiment 1.
Embodiment 3: as shown in Figure 5, be provided with the screw 12 that radially runs through its center on the connection shelves 6, the screw direction of screw 12 and the center line of groove 6 are perpendicular, are 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 together adjusting screw 13 and stop bit screw 14.
All the other are with embodiment 2.
Embodiment 4: as shown in Figure 6 and Figure 7, be provided with row totally 3 fine setting holes 10 on the groove 6 bottom land center lines, 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, be provided with the screw 12 that radially runs through its center on the connection shelves 5, the screw direction of screw 12 and the center line of groove 6 are perpendicular, are 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 together adjusting screw 13 and stop bit screw 14.
All the other are with embodiment 4.
Practical: as to change with it the connection shelves in the eccentric shaft into oppositely setting by (or overlap with rotation centerline setting) formerly is set in the same way with the capacity eccentric bearing shelves, utilize reverse eccentric moment of inertia equilibrium principle, realizing the eccentric shaft homeostasis, is core technology of the present invention.
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 namely 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 but opposite direction with the eccentric moment of capacity eccentric bearing shelves.
Claims (5)
1. groove type self balancing eccentric shaft, by from the inside to surface successively the symmetrical capacity eccentric bearing shelves, concentric bearings shelves, locking shelves and the benchmark shelves that connect the shelves both sides of being connected to jointly form, the shaft axis of described concentric bearings shelves, locking shelves and benchmark shelves is positioned on the rotation centerline of bearing, and the shaft axis of described capacity eccentric bearing shelves is positioned on the eccentric center line of bearing; It is characterized in that, relatively be positioned at capacity eccentric bearing shelves eccentric side on the described connection shelves and be provided with a groove, the center line of described groove is positioned on the plane at the two place of rotation centerline of the eccentric center line of capacity eccentric bearing shelves and concentric bearings shelves; The described eccentric moment that connects shelves equates with the eccentric moment of capacity eccentric bearing shelves.
2. groove type self balancing eccentric shaft according to claim 1 is characterized in that, is provided with the counterweight lamination in the described groove, and described counterweight lamination is by regulating the locking of screw and adjusting bolt, and described adjusting screw is positioned on the described groove bottom land center line.
3. groove type self balancing eccentric shaft according to claim 1 is characterized in that, is provided with a row fine setting hole on the described groove bottom land center line, and fine setting is equipped with trimming bolt in the hole.
4. groove type self balancing eccentric shaft according to claim 3 is characterized in that, the number in described fine setting hole is odd number; The trimming bolt that is equipped with is arranged take the fine setting hole of centre as the benchmark bilateral symmetry.
5. according to claim 1 and 2 or 3 or 4 described groove type self balancing eccentric shafts, it is characterized in that, connect on the shelves and be provided with the screw that radially runs through its center, the screw direction of described screw and the center line of described groove are perpendicular, are provided with in the described screw and its a pair of moment fine adjustment screw with screw-thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210072982.6A CN103307090B (en) | 2012-03-12 | 2012-03-12 | A kind of groove type self-balancing eccentric shaft for jaw crusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210072982.6A CN103307090B (en) | 2012-03-12 | 2012-03-12 | A kind of groove type self-balancing eccentric shaft for jaw crusher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103307090A true CN103307090A (en) | 2013-09-18 |
| CN103307090B CN103307090B (en) | 2016-05-11 |
Family
ID=49132671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210072982.6A Expired - Fee Related CN103307090B (en) | 2012-03-12 | 2012-03-12 | A kind of groove type self-balancing eccentric shaft for jaw crusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103307090B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB935892A (en) * | 1961-06-12 | 1963-09-04 | Ernst Kuhme | Improvements in or relating to jaw crushers |
| JPS5242302Y2 (en) * | 1974-09-30 | 1977-09-26 | ||
| JPS616243Y2 (en) * | 1979-07-16 | 1986-02-25 | ||
| EP0289966A2 (en) * | 1987-05-06 | 1988-11-09 | Deere & Company | A process for balancing a crankshaft, and a crankshaft balanced thereby |
| GB2279426A (en) * | 1993-06-29 | 1995-01-04 | Hyundai Motor Co Ltd | Crankshaft of a V6 internal combustion engine |
| JP2010209969A (en) * | 2009-03-09 | 2010-09-24 | Toyota Motor Corp | Crankshaft |
| CN201851585U (en) * | 2010-10-16 | 2011-06-01 | 常州亚美柯机械设备有限公司 | Diesel engine crankshaft balance assembly |
| CN202052568U (en) * | 2011-03-21 | 2011-11-30 | 白银有色集团股份有限公司 | Moving jaw eccentric shaft assembly of simple swing type jaw crusher |
| CN102312909A (en) * | 2011-07-08 | 2012-01-11 | 江苏秋林重工股份有限公司 | Eccentric shaft |
| CN202132369U (en) * | 2011-06-24 | 2012-02-01 | 成都大宏立机器制造有限公司 | Linear type vibration feeder exciter main shaft |
| CN202468679U (en) * | 2012-03-12 | 2012-10-03 | 义乌市黑白矿山机械有限公司 | Groove type self-balance eccentric shaft |
-
2012
- 2012-03-12 CN CN201210072982.6A patent/CN103307090B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB935892A (en) * | 1961-06-12 | 1963-09-04 | Ernst Kuhme | Improvements in or relating to jaw crushers |
| JPS5242302Y2 (en) * | 1974-09-30 | 1977-09-26 | ||
| JPS616243Y2 (en) * | 1979-07-16 | 1986-02-25 | ||
| EP0289966A2 (en) * | 1987-05-06 | 1988-11-09 | Deere & Company | A process for balancing a crankshaft, and a crankshaft balanced thereby |
| GB2279426A (en) * | 1993-06-29 | 1995-01-04 | Hyundai Motor Co Ltd | Crankshaft of a V6 internal combustion engine |
| JP2010209969A (en) * | 2009-03-09 | 2010-09-24 | Toyota Motor Corp | Crankshaft |
| CN201851585U (en) * | 2010-10-16 | 2011-06-01 | 常州亚美柯机械设备有限公司 | Diesel engine crankshaft balance assembly |
| CN202052568U (en) * | 2011-03-21 | 2011-11-30 | 白银有色集团股份有限公司 | Moving jaw eccentric shaft assembly of simple swing type jaw crusher |
| CN202132369U (en) * | 2011-06-24 | 2012-02-01 | 成都大宏立机器制造有限公司 | Linear type vibration feeder exciter main shaft |
| CN102312909A (en) * | 2011-07-08 | 2012-01-11 | 江苏秋林重工股份有限公司 | Eccentric shaft |
| CN202468679U (en) * | 2012-03-12 | 2012-10-03 | 义乌市黑白矿山机械有限公司 | Groove type self-balance eccentric shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103307090B (en) | 2016-05-11 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160511 Termination date: 20200312 |