CN103307089A - Weight type self-balancing eccentric shaft - Google Patents
Weight type self-balancing eccentric shaft Download PDFInfo
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- CN103307089A CN103307089A CN2012100729737A CN201210072973A CN103307089A CN 103307089 A CN103307089 A CN 103307089A CN 2012100729737 A CN2012100729737 A CN 2012100729737A CN 201210072973 A CN201210072973 A CN 201210072973A CN 103307089 A CN103307089 A CN 103307089A
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- eccentric
- shelves
- screw
- balancing
- center line
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Abstract
The invention discloses a weight type self-balancing eccentric shaft. A balance weight is fillet-welded on the opposite side, close to an eccentric center line, of a connecting guard in an eccentric shaft in the prior art, so that the center of mass of the connecting guard shifts toward the opposite side, relative to a rotary center line, of 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 weight 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 broken disintegrator technical field of jaw, more specifically say a kind of pouring weight formula 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 function of jaw, produce eccentric vibrating, and 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, and (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 can make related components produce fatigue damage, reduces its working life, and the screw that wherein connects disintegrator and stand easily ruptures, and changes frequent; Eccentric vibrating can make related components produce fatigue damage, reduces its working life; 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 pouring weight formula self balancing eccentric shaft of high, the easy detection of a kind of balance quality, easy to control, designs simplification, reduction device fabrication and operating cost is provided.
In order to reach above purpose, the present invention is achieved by the following technical solutions: a kind of pouring weight formula 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 the eccentric offside of capacity eccentric bearing shelves on the described connection shelves and be provided with a balancing weight, the center line of described balancing weight 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, be rotation centerline and eccentric center line, be in the eccentric shaft neutral position and with the shelves that are connected that link to each other of two capacity eccentric bearing shelves only play connection function, perhaps be that its center of mass point is arranged at the eccentric side of capacity eccentric bearing shelves for easy to process or custom.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 to paste weldering one counterweight block at the connection shelves of prior art eccentric shaft by eccentric center line offside, 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 with the eccentric moment of inertia of capacity eccentric bearing shelves generation, but opposite direction, realized the homeostasis of the rotation eccentric moment of inertia of eccentric shaft.Thus, the eccentric balancing blocks on the outside flywheel also just can have been exempted.
Structure characteristic of the present invention is: 1. internal feature: connecting shelves and be provided with by the eccentric center line offside of capacity eccentric bearing shelves the balancing weight of coupling balance, be remarkable structure characteristic of the present invention; 2. surface: another significant feature of the present invention is to have exempted the eccentric balancing blocks on the flywheel.
Core technology of the present invention is: the connection shelves at eccentric shaft lean on the eccentric center line offside of capacity eccentric bearing shelves, increase by a balancing weight by technology such as welding, 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, realizing the eccentric shaft homeostasis, is we's core technology.
Beneficial effect: (1) simplified structure.Remove the flywheel balancing piece from, reduce the device fabrication cost, and then save 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 (dual 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, 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 by whole set equipment, so the disintegrator in the reality 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) subtract the method for cutting the part quality if adopt at the connection shelves by eccentric center line one side, just need the machine tooling appointed condition, and the present invention is connecting shelves by eccentric center line offside subsides weldering one counterweight block, only need electric welding equipment just can, realize connecting the centroid motion of shelves by the method for reverse increase part quality, reach eccentric moment of inertia balance.
The obvious advantage of the present invention is: need not at the scene also can implement technical solution of the present invention under the machine tool processing conditions, transform old product.
As the alternative of such scheme, be provided with the counterweight lamination on the described balancing weight, described counterweight lamination is by regulating the locking of screw and adjusting bolt, and described adjusting screw is positioned on the plane at center line place of described balancing weight.
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 micro-adjusting mechanism, and the counterweight lamination plays the effect of balanced adjustment moment, thereby by the stack of counterweight lamination or reduce so that be adjusted to the optimum position before and after the whole center of mass point that connects shelves.
As preferably, be provided with a row fine setting hole on the described balancing weight, fine setting is equipped with trimming bolt in the hole, and the fine setting hole is positioned on the plane at center line place of described balancing weight.
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 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 balancing weight are perpendicular, are provided with in the described 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 easily occurs the left and right side of eccentric shaft, and the left and right side that as above micro-adjusting mechanism can effectively be adjusted eccentric shaft is set.
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 also a kind of structural representation of the present invention;
Fig. 5 is the structure sectional view of A-A among Fig. 4.
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-balancing weight, 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
The present invention is further illustrated below in conjunction with specific embodiment.
Embodiment 1: as shown in Figure 2, a kind of balancing weight formula 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 the offside that relatively is positioned at capacity eccentric bearing shelves 4 off-centre on the shelves 5 and be provided with a balancing weight 6, the center line of balancing weight 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 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, be provided with counterweight lamination 7 in the balancing weight 6, counterweight lamination 7 is regulated screw 8 and is positioned on balancing weight 6 center lines by regulating screw 8 and adjusting bolt 9 lockings.All the other are with embodiment 1.
Embodiment 3: as shown in Figure 3, 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 balancing weight 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 4, be provided with row totally 5 fine setting holes 10 on balancing weight 6 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 5, 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 balancing weight 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 on the connection shelves of eccentric shaft, to change with it oppositely setting into 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. pouring weight formula 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 the eccentric offside of capacity eccentric bearing shelves on the described connection shelves and be provided with a balancing weight, the center line of described balancing weight 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. pouring weight formula self balancing eccentric shaft according to claim 1, it is characterized in that, be provided with the counterweight lamination on the described balancing weight, described counterweight lamination is by regulating the locking of screw and adjusting bolt, and described adjusting screw is positioned on the plane at center line place of described balancing weight.
3. pouring weight formula self balancing eccentric shaft according to claim 1 is characterized in that, is provided with a row fine settings hole on the described balancing weight, and fine setting is equipped with trimming bolt in the hole, and the fine setting hole is positioned on the plane at center line place of described balancing weight.
4. pouring weight formula 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 pouring weight formula 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 balancing weight 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 |
|---|---|---|---|
| CN2012100729737A CN103307089A (en) | 2012-03-12 | 2012-03-12 | Weight type self-balancing eccentric shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100729737A CN103307089A (en) | 2012-03-12 | 2012-03-12 | Weight type self-balancing eccentric shaft |
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| Publication Number | Publication Date |
|---|---|
| CN103307089A true CN103307089A (en) | 2013-09-18 |
Family
ID=49132670
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100729737A Pending CN103307089A (en) | 2012-03-12 | 2012-03-12 | Weight type self-balancing eccentric shaft |
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| Country | Link |
|---|---|
| CN (1) | CN103307089A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533795A (en) * | 2014-12-24 | 2015-04-22 | 珠海凌达压缩机有限公司 | Refrigeration equipment and compressor thereof |
| CN105728163A (en) * | 2016-02-28 | 2016-07-06 | 博艳萍 | Fan-shaped swaying block type grinding wheel mechanism |
| CN107524755A (en) * | 2016-06-20 | 2017-12-29 | 美国轮轴制造公司 | Shaft assembly with the counterweight for being attached to shaft component |
| CN108612738A (en) * | 2018-06-01 | 2018-10-02 | 南通联源机电科技股份有限公司 | A kind of making type eccentric shaft mechanism easy to process |
Citations (6)
| 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 |
| CN201090662Y (en) * | 2007-09-21 | 2008-07-23 | 盈锡精密工业股份有限公司 | Principal axis balance screw cap |
| CN201252460Y (en) * | 2008-07-15 | 2009-06-03 | 吕义堂 | Improved structure of a brushless motor rotor |
| CN101672342A (en) * | 2009-10-10 | 2010-03-17 | 西安交通大学 | Rotor online automatic balancing device of high-speed rotating machine |
| CN101782128A (en) * | 2010-03-15 | 2010-07-21 | 山东大学 | In-line arrangement four-cylinder diesel engine balance mechanism |
| CN202468681U (en) * | 2012-03-12 | 2012-10-03 | 义乌市黑白矿山机械有限公司 | Weight type self-balancing eccentric shaft |
-
2012
- 2012-03-12 CN CN2012100729737A patent/CN103307089A/en active Pending
Patent Citations (6)
| 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 |
| CN201090662Y (en) * | 2007-09-21 | 2008-07-23 | 盈锡精密工业股份有限公司 | Principal axis balance screw cap |
| CN201252460Y (en) * | 2008-07-15 | 2009-06-03 | 吕义堂 | Improved structure of a brushless motor rotor |
| CN101672342A (en) * | 2009-10-10 | 2010-03-17 | 西安交通大学 | Rotor online automatic balancing device of high-speed rotating machine |
| CN101782128A (en) * | 2010-03-15 | 2010-07-21 | 山东大学 | In-line arrangement four-cylinder diesel engine balance mechanism |
| CN202468681U (en) * | 2012-03-12 | 2012-10-03 | 义乌市黑白矿山机械有限公司 | Weight type self-balancing eccentric shaft |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533795A (en) * | 2014-12-24 | 2015-04-22 | 珠海凌达压缩机有限公司 | Refrigeration equipment and compressor thereof |
| CN105728163A (en) * | 2016-02-28 | 2016-07-06 | 博艳萍 | Fan-shaped swaying block type grinding wheel mechanism |
| CN107524755A (en) * | 2016-06-20 | 2017-12-29 | 美国轮轴制造公司 | Shaft assembly with the counterweight for being attached to shaft component |
| CN107524755B (en) * | 2016-06-20 | 2019-01-15 | 美国轮轴制造公司 | Shaft assembly with the counterweight for being integrated to shaft component |
| CN108612738A (en) * | 2018-06-01 | 2018-10-02 | 南通联源机电科技股份有限公司 | A kind of making type eccentric shaft mechanism easy to process |
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Application publication date: 20130918 |