CN105020255B

CN105020255B - Double vuilt-up crankshafts

Info

Publication number: CN105020255B
Application number: CN201410161747.5A
Authority: CN
Inventors: 刘运武
Original assignee: Hangzhou Yida Technology Co Ltd
Current assignee: TONGXIANG HUIQUAN TEXTILE CO., LTD.
Priority date: 2014-04-22
Filing date: 2014-04-22
Publication date: 2018-10-30
Anticipated expiration: 2034-04-22
Also published as: CN105020255A

Abstract

The invention discloses a kind of double vuilt-up crankshafts, it is intended to provide a kind of bent axle that can be used to replace two-in-one connecting rod bearing shell in crank position installation bearing, to which lubricating oil need not be filled, thus it is more suitable for using under conditions of no cylinder sleeve is with piston, it makes simple, it is easy to repair and durable, the main points of its technical scheme are that：It is placed within the annular outer ring of connecting rod top according to single or double of interlude installation of the technological requirement in the length of same root d-axis or multiple eccentric bushings, and in the outer rim bearing set of eccentric bushing, the eccentric of double a eccentric bushings is spaced from each other 180 on contour each other on one side⁰, three are spaced from each other 120⁰, multiple d-axis surroundings of being subject to are equal in weight or close to equal, realize that operating more balances with this.

Description

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.

Claims

1. a kind of double vuilt-up crankshafts, the crank position disalignment being mounted in connecting rod top, it is characterized in that：Double vuilt-up crankshafts It is made of d-axis and single or double or multiple eccentric bushings, the outer rim contour of the eccentric bushing is installing bearing, the bias Set is close to be linked on d-axis interlude peripheral side, and two plane of eccentric bushing or so offers the through-hole positioned at non-central location, should The outer circumference of eccentric bushing differs away from d-axis center line distance after through-hole fitting is mounted on d-axis, multiple bias on same d-axis Set is spaced from one another on contour according to eccentric size；

By described installing outer circumference wherein a side vehicle of the eccentric bushing of bearing into rib, another one annular concave ditch of side vehicle Annular opening retainer ring is packed into after being installed for bearing；Alternatively, by the outer circumference to install the eccentric bushing of bearing Between section two annular grooves of left and right sides vehicle for placing ball, and by one two one side of something of connecting rod and crank position fitting Circle outer ring internal diameter vehicle at groove corresponding with crank position, then by two half of circle outer rings be combined into one with crank position fitting, make to During few double-row balls are located in crank position and two half of circle mutual corresponding annular grooves in outer ring being combined into one, connecting rod top The plate for one side of something circle outer ring that place is bonded at left and right sides of two half of circle outer rings each other up and down can be combined into one to be formed it is interior big outer small Taper, here taper position outer rim install the internal annular ring for big outer small taper in corresponding additional to the taper position Carry out encirclement banding.

2. a kind of double vuilt-up crankshafts according to claim 1, which is characterized in that the annular ring of the left and right sides is respectively by single Or double a tension springs hold annular ring toward inner edge.