Double vuilt-up crankshafts
Technical field
The present invention relates to mechanical transmission components, more precisely more particularly in internal combustion engine for driving connecting rod and work
Plug does operation up and down and a kind of bent axle suitable for other occasions in cylinder sleeve.
Background technology
As its name suggests, bent then be bent, rotation centerline is deviateed in the crank position being mounted in connecting rod top, and single bent axle is at least
Containing there are one crank positions to be used to be combined into i.e. rotatable, its single song of traditional method, that is, prior art that is slidably matched with one headgear of connecting rod
Axis is an entirety, and structure and workmanship principle are as shown in Figure 1;Two handle positions 1 of bent axle are separated by 180 on contour0,
In one driving wheel 2 is installed, both ends top is positioned by each bearing and bearing block.Since connecting rod top is by two half of circles
Housing 4 is composed by screw rod and nut 5 to be two-in-one, so as to which it to be successfully linked in the outer rim of crank, to subtract
Gently abrasion in operation, it is connecting rod to be installed additional between two half of circle housings and crank there are two the half of circular shaft watt of two-in-one
Watt.Its shortcoming one is to mitigate crank and connecting rod bearing shell in operation because one moves one quiet (crank is that connecting rod bearing shell does not follow
Crank rotates to be quiet) the opposite of formation rubs, a closed trapped fuel case don't fail to be arranged and be used for filling liquid lubricating oil, once it lacks
Oil or oil circuit are blocked and are just burnt out because of high temperature;Second is that because big end is made of with nut two-in-one by screw rod, spiral shell
Bar and nut additionally, there may be integral one-piece crankshaft and manufacture of high cost and inconvenient dimension inevitably accidents happened due to pine moves back in running at high speed
The disadvantages such as repair.
Invention content
The present invention is to make up above-mentioned deficiency, it is desirable to provide a kind of smoothly to install solid box for replacing in crank position
Two-in-one connecting rod bearing shell, thus without filling liquid lubricating oil, and cost reduction and a kind of long-lived bent axle are manufactured, it uses
Following technical scheme is achieved.
By a d-axis interlude, the two is close to be composed outside with single or double a or multiple eccentric bushings inside, due to
It is non-central that the same through-hole that two plane of eccentric bushing or so is opened is located therein a side, after which is mounted on d-axis
Its outer rim of eccentric bushing differs away from d-axis center distance, as long as loading onto single or double a or multiple bearings in eccentric bushing outer rim set and inciting somebody to action
It is placed in connecting rod wherein one and comes directly towards in annular ring, and specific practice is as follows.
Outer rim is used to install eccentric bushing wherein a side vehicle of bearing into rib, another one annular concave ditch of side vehicle is used for
Bearing is packed into annular opening retainer ring after installing, rib and retainer ring its effect are all to prevent bearing from shifting, and eccentric bushing two is flat
Face through-hole is operated synchronously by keyway and pin key positioning with realizing with d-axis installation position, double eccentric bushing foundations on same d-axis
Eccentric size is spaced from one another 180 on contour0, three eccentric bushings are separated by 1200(3600÷3), multiple eccentric bushings according to
It depending on technological requirement, but should accomplish that d-axis surrounding weight is equal as possible, that is, more balance in operating and reduce vibration.
When crankshaft eccentric rate is larger, the bearing selected because eccentric bushing is excessive mutually should be large scale, to improve system
It does cost and becomes heavy, used technical solution is two annular grooves of left and right vehicle in eccentric bushing interlude for placing
Ball, and connecting rod is justified into outer ring internal diameter vehicles into groove corresponding with crank position with one of crank position fitting two one side of something, then
Two-in-one and crank position fitting, make that at least double-row balls are located in crank and two half of circle outer rings of two-in-one are mutually right
In the annular groove answered, the size of groove and ball, which is subject to, can act in accordance with operating.
It is not backed out mutually in operation for two half of circle outer rings of two-in-one, by two-in-one plate above and below the suit place of left and right
Block makes interior big outer small taper, and taper plate surrounds banding by the interior annular ring for corresponding taper, and is held inside by means of tension spring,
Its tension spring can be double or single up and down per side, so that annular ring is not moved outward in operation due to being the pulling force effect of tension spring
Regression pine disengages, and replaces screw rod and nut by annular ring, thus overcomes nut pine and moves back or the phenomenon that screw rod is split off.
In conclusion technical solution its main points selected by the present invention are:It is inside and single or double a by d-axis interlude
Or its multiple outer rim contour can install the eccentric bushing of solid box and be close to be composed both outside;Eccentric bushing outer rim interlude
To control two annular grooves, and the row's of placement example ball in groove, comes directly towards two with the connecting rod for being linked in eccentric bushing outer rim and be combined into
Two annular grooves of the half of circle outer ring internal diameter of two of one are corresponding to be bonded to each other;Connecting rod comes directly towards two half of circle outer rings or so
Plate is two-in-one for interior big outer small taper up and down for joint place each other for both sides, and is corresponding taper in conical plate outer rim installs additional
Annular ring surrounds banding, and the left and right sides is respectively held annular ring toward inner edge from single or double a tension springs.
Beneficial effects of the present invention are:It selects single or double or double to be mounted on upper bearing (metal) same to be taken with putting on partially
For the connecting rod bearing shell of two-in-one, to make traditional method be that sliding friction changes into rolling friction, thus can exempt must inject
Lubricating oil(The lubricating oil filled when being used in internal combustion engine is used only to lubrication cylinder sleeve and piston), because of barrel shift
It is small and durable with respect to sliding transfer resistance, it is easier to replace bearing;By its big end make a full circle eliminate because
Two-in-one and increased screw rod and nut, and need not worry to move back or screw rod fractures and causes the accident because of nut pine;By big end
It is phase that the half of circle outer ring left and right sides of two-in-one two is bonded plate and makes interior big outer small taper and place it in interior up and down
It answers in the annular ring of taper and is held plus tension spring, therefore ensure that the hair that will not be caused the accident due to nut pine moves back or screw rod fractures
It is raw;It manufactures cost due to eliminating the process of a machining crankshafts and is greatly lowered;D-axis and eccentric bushing are in operation without there is mill
Damage and it is durable, replace bearing be the superiority such as simple and easy to do and easy to repair.
Description of the drawings
Fig. 1 is traditional method its structure of bent axle i.e. in the prior art and shape front view;
Fig. 2 is that two eccentric bushings of the present invention are separated by 180 on contour each other0Replace bent axle mounted on same root d-axis
Front view;
Fig. 3 is for being sleeved on two of cause two-in-one outside its crank position of bent axle half of circle outer rings by screw rod and spiral shell
Mother is combined into the big end display diagram of a full circle;
Fig. 4 is single eccentric bushing stereogram;
Fig. 5 is single eccentric bushing both sides floor map;
Fig. 6 is the eccentric bushing side display figure that interlude has two annular grooves for the row's of placement example ball;
Fig. 7 and Fig. 8 is combined type of the present invention and its structure of monolithic linkage major part and shape display diagram.
Specific implementation mode
It is described further below in conjunction with the accompanying drawings.
Referring to Fig.1, driving wheel 2 is installed by belt and engine biography containing wherein one there are two the bent axle of crank position 1
Driving wheel(It is not shown in figure)Connection, bent axle both ends are supported and are positioned by each bearing and bearing block 3;Connecting rod in traditional method
Major part is integrated by each screw rod in left and right and nut with two-in-one fastening by each one up and down half of circle outer ring 4, with crank
When the fitting of position two pieces of half of circle connecting rod bearing shells are installed additional between crank and double half of circle outer rings to mitigate friction(Do not show in figure
Go out).
With reference to Fig. 2 to Fig. 5, the present invention is composed of one eccentric bushing of d-axis 6 and left and right, the both ends top of d-axis 6
Each bearing position 17 plays a part of bearing and positioning for installing bearing and bearing block, and eccentric bushing back is annular rib
8, nearby side have annular concave ditch 9 for placing annular opening retainer ring(It is not shown in figure), interlude is installation bearing position 7, rib 8
Presence with retainer ring is all to prevent the bearing of be mounted on interlude from shifting, its side of plane is provided with through-hole at left and right sides of eccentric bushing
11, one side planing of through-hole has keyway 12, through-hole to be linked in its keyway and keyway on d-axis on d-axis 6(It is not shown in figure)It is corresponding,
By the pin key being placed in keyway to realize that eccentric bushing follows direct-axis synchronous to operate, for ease of dismantle bearing in the future and in rib
8 both sides are provided with screw hole 13.
With reference to Fig. 6, eccentric bushing back is annular rib 8, and contour, which is got on the bus, has the annular groove 10 of left and right two for the row of placement
Row ball replaces bearing with this, as long as being by two half of circle outer ring internal diameter vehicles at corresponding two annular grooves and with its fitting
Can, the depth dimensions of each groove are slightly less than ball bearing radius.
With reference to Fig. 7, two-in-one plate 16 is interior big outer small taper up and down at left and right sides of two half of circle outer rings, by interior
Upper and lower 16 banding of taper plate is integrated for the annular ring 14 of corresponding taper, and 15 company of being drawn of tension spring is selected to be moved back with locking.
In fig. 8, there are four screw holes 18 for a monoblock type big end outer ring wherein plane, are used for after bearing set by ring
Shape baffle ring and screw(It is not shown in figure)It tightens to block the not outer displacement of bearing.