CN201496387U - Crank shaft of automobile engine - Google Patents
Crank shaft of automobile engine Download PDFInfo
- Publication number
- CN201496387U CN201496387U CN200920308528XU CN200920308528U CN201496387U CN 201496387 U CN201496387 U CN 201496387U CN 200920308528X U CN200920308528X U CN 200920308528XU CN 200920308528 U CN200920308528 U CN 200920308528U CN 201496387 U CN201496387 U CN 201496387U
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- CN
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- Prior art keywords
- main shaft
- automobile engine
- crank
- engine crankshaft
- balancer weight
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model provides a crank shaft of an automobile engine, belongs to the technical field of automobile engine, and solves the problem of the prior automobile engine crank shaft that the installation and the positioning are difficult. The crank shaft of the automobile engine comprises a main shaft, a plurality of cranks, and counterweights, wherein, the cranks and the counterweights are arranged on the main shaft; the cranks are uniformly distributed on two sides of the main shaft; the counterweights are arranged on the cranks, and are arranged on the two sides of the main shaft along a straight line together with the cranks; and positioning structures capable of positioning the cranks at proper angles during the installation of the crank shaft are arranged on the counterweights. A positioning groove and a projection are additionally formed at the end parts of the counterweights of the crank shaft, so that the crank shaft can be positioned at a fixed angle during the installation of the crank shaft. By adopting the structure, the utility model has the advantages of simple structure, convenient installation, and accurate positioning during installation, and can well ensure the installation precision.
Description
Technical field
The utility model belongs to technical field of automobile engine, the bent axle of using on particularly a kind of motor.
Background technique
Motor is to drive the power that automobile is advanced, and bent axle is the critical piece of transferring power in the motor.The fuel gas pressure that is produced that burns in the firing chamber is passed to bent axle by piston and coupled connecting rod, and is converted into moment of torsion by bent axle, thus the distribution device of the transmission system of powered vehicle, motor and other auxiliary device.The rotation of bent axle is the power source of motor thus, if its function can't be carried out accurately, the power of motor just can't be brought into play normally so.
At present, the get on the car kind of the bent axle that motor uses of market is more, provides a kind of " engine crankshaft " as the patent applicant of China Patent No. ZL 200720190937.5, is provided with the crank throw and the counterweight block of a plurality of axial distribution between its front-end and back-end; Each described crank throw comprises the main journal and the connecting rod journal diameter of axial setting, and is fixedly connected by crank between the two; It is characterized in that the number of described counterweight block is four.Engine crankshaft that the utility model provides effectively straight line motion is converted into rotation fortune fortune, but bent axle is when being mounted during prerequisite, and each relative angle must be correct.If bent axle is when mounted at a cylinder top dead center position, so as parts such as piston rod, camshaft, timing chain just be not easy to install, cause a cylinder that ignition timing and valve timing just can't be accurately orderly to follow the running of a cylinder simultaneously.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, proposed a kind of simple in structure, the automobile engine crankshaft that can accurately be located during installation.
The purpose of this utility model can realize by following technical proposal: a kind of automobile engine crankshaft, comprise main shaft, be arranged on some crank throws and balancer weight on the main shaft, it is characterized in that, described crank throw is distributed on the both sides of main shaft, described balancer weight be arranged on the crank throw and and crank throw be arranged on the both sides of main shaft along a straight line, described balancer weight is provided with and can makes crank throw be positioned at position structure on the suitable angle when crankshaft installed.
Automobile engine crankshaft of the present utility model is arranged on the engine cylinder-body of automobile, and several crank throws are set at the both sides of spindle axis line respectively, and crank throw is connected with piston rod on the motor.Balancer weight and crank throw are arranged on the both sides of main shaft in line, be provided with balancer weight can balance crankshaft crank throw produces during rotation centrifugal force and centrifugal moment and reciprocal inertia force.Position structure is set on balancer weight, and when making things convenient for bent axle to be connected with piston rod, crank throw can be positioned on the angle of required installation.
In above-mentioned automobile engine crankshaft, described main shaft is provided with the even number crank throw.Be arranged to the even number crank throw, centrifugal force that can better balance crankshaft when bent axle rotates.
In above-mentioned automobile engine crankshaft, described main shaft is provided with four crank throws, and the crank throw at described main shaft two ends is positioned at a side of main shaft, and two middle crank throws are positioned at the opposite side of main shaft.
In above-mentioned automobile engine crankshaft, described position structure is arranged on the pairing balancer weight of crank throw at main shaft two ends.When being convenient to crankshaft installed, this setting locatees.
In above-mentioned automobile engine crankshaft, described crank throw comprises two cranks and the rod journal that is connected two cranks, and described crank is connected on the main shaft, and described rod journal is connected the end of two cranks.
In above-mentioned automobile engine crankshaft, the axis parallel of described rod journal is in the shaft axis of main shaft, and the equal vertical major of above-mentioned balancer weight and crank also is arranged on the main shaft both sides in line.
In above-mentioned automobile engine crankshaft, described position structure is the locating slot that is opened on the balancer weight.Locating slot is set when crankshaft installed, bent axle can be positioned on the angle, prevent that bent axle from rotating by assistant tool.
As another kind of situation, in above-mentioned automobile engine crankshaft, described position structure is the projection that is arranged on the balancer weight.Projection is set when crankshaft installed, bent axle can be positioned on the angle, prevent that bent axle from rotating by assistant tool.
In above-mentioned automobile engine crankshaft, described locating slot is positioned at the end of balancer weight and takes the shape of the letter U, and the shaft axis setting of the center line of described locating slot, the shaft axis of rod journal and main shaft at grade.This setting makes the bent axle location more accurate.
In above-mentioned automobile engine crankshaft, described projection is a rectangle projection, and described projection is positioned at the end of balancer weight, and the shaft axis setting of the center line of described projection, the shaft axis of rod journal and main shaft at grade.This setting makes the bent axle location more accurate.
In above-mentioned automobile engine crankshaft, described locating slot and projection are positioned at the end of second pairing balancer weight of crank.
Compared with prior art, automobile engine crankshaft of the present utility model has been offered a locating slot or has been set up a projection on the end of the balancer weight of bent axle, can when crankshaft installed bent axle be positioned on the tilt fixing.The crankshaft structure of this structure is simple, and is easy for installation, and can accurately locate when mounted, can better guarantee installation precision.
Description of drawings
Fig. 1 is the structural representation of automobile engine crankshaft of the present utility model.
Fig. 2 is the cross-sectional view of automobile engine crankshaft of the present utility model at A-A shown in Figure 1 place.
Fig. 3 is the embodiment's 2 of an automobile engine crankshaft of the present utility model structural representation.
Fig. 4 is the assistant tool when automobile engine crankshaft as shown in Figure 2 is installed of the present utility model.
Fig. 5 is the assistant tool when automobile engine crankshaft as shown in Figure 3 is installed of the present utility model.
Among the figure, 1, main shaft; 2, crank throw; 21, crank; 22, rod journal; 3, positioning arm; 31, positioning block; 32, groove; 4, balancer weight; 41, locating slot; 42, projection.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, automobile engine crankshaft of the present utility model comprises main shaft 1, is arranged on four crank throws 2 and eight balancer weights 4 on the main shaft 1, is arranged on the position structure on the balancer weight 4.
Two crank throws 2 at main shaft 1 two ends are positioned at a side of main shaft 1, and two middle crank throws 2 are positioned at the opposite side of main shaft 1.Each crank throw 2 is made up of two cranks 21 and a rod journal 22, rod journal 22 is arranged on an end of crank 21, and between two cranks 21, be connected as a single entity with crank 21, the axis parallel of the shaft axis of rod journal 22 and main shaft 1, the other end of crank 21 and main shaft 1 are connected as a single entity.Eight balancer weights 4 are structure as a whole with eight cranks 21 respectively, are arranged on the both sides of main shaft 1 in line, be provided with balancer weight 4 can balance crankshaft crank throw 2 during the rotation centrifugal force and centrifugal moment and the reciprocal inertia force that produce.
Position structure of the present utility model is the U-shaped locating slot 41 that is opened in as second crank, 21 pairing balancer weights, 4 ends of first crank throw 2 of the direction of turning left from the right side among Fig. 1, and the shaft axis of the center line of this locating slot 41 and rod journal 22 and the shaft axis setting of main shaft 1 are at grade and be separately positioned on the both sides of main shaft 1.
When automobile engine crankshaft of the present utility model was installed, main shaft 1 was arranged on the cylinder body of motor, and piston rod is connected with rod journal 22.For the timing system that makes things convenient for piston rod, motor head and camshaft and bent axle assemble, need the assistant tool by as shown in Figure 4 to position during crankshaft installed, this setting tool comprises positioning arm 3 and is arranged on positioning block 31 on the positioning arm 3.During the location, earlier positioning block 31 is bumped in the locating slot 41; Positioning arm 3 is resisted against on the cylinder body plane.Behind the location, first crank throw 2 of bent axle and the rod journal 22 of the 4th crank throw 2 are vertically at bottom dead center position, and the end on the corresponding balancer weight 4 is positioned at top dead center position; The rod journal 22 of second crank throw 2 and the 3rd crank throw 2 is vertically at top dead center position, and corresponding balancer weight 4 ends are positioned at bottom dead center position.By locating slot 41 bent axle is fixed, can be easily the timing system of piston rod, motor head and camshaft and bent axle be assembled, make assembling more accurate.
As Fig. 3, present embodiment is similar to practical example 1, and wherein position structure is the rectangle projection 42 that is arranged on crank 21 ends, and this projection 42 and rod journal 22 are separately positioned on the both sides of main shaft 1.The bent axle of this structure need position by assistant tool as shown in Figure 5 when mounted, and this setting tool comprises positioning arm 3 and is arranged on positioning arm 3 upper grooves 32.Earlier groove 32 is socketed on the projection 42 during the location; Positioning arm 3 is resisted against on the cylinder body plane, thereby the crank throw 2 of bent axle is vertically located.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as main shaft 1, crank throw 2, crank 21, rod journal 22, positioning arm 3, positioning block 31, groove etc. 32, balancer weight 4, locating slot 41, projection 42 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (10)
1.1, a kind of automobile engine crankshaft, comprise main shaft (1), be arranged on some crank throws (2) and balancer weight (4) on the main shaft (1), it is characterized in that, described crank throw (2) is distributed on the both sides of main shaft (1), described balancer weight (4) be arranged on that crank throw (2) is gone up and and crank throw (2) be arranged on the both sides of main shaft (1) along a straight line, described balancer weight (4) is provided with and can makes crank throw (2) be positioned at position structure on the suitable angle when crankshaft installed.
2. automobile engine crankshaft according to claim 1 is characterized in that, described main shaft (1) is provided with even number crank throw (2).
3. automobile engine crankshaft according to claim 2, it is characterized in that, described main shaft (1) is provided with four crank throws (2), and the crank throw (2) at described main shaft (1) two ends is positioned at a side of main shaft (1), and middle two crank throws (2) are positioned at the opposite side of main shaft (1).
4. according to claim 1 or 2 or 3 described automobile engine crankshafts, it is characterized in that described position structure is arranged on the pairing balancer weight of crank throw (2) (4) at main shaft (1) two ends.
5. automobile engine crankshaft according to claim 4, it is characterized in that, described crank throw (2) comprises two cranks (21) and the rod journal (22) that is connected two cranks (21), described crank (21) is connected on the main shaft (1), and described rod journal (22) is connected the end of two cranks (21).
6. automobile engine crankshaft according to claim 5, it is characterized in that, the axis parallel of described rod journal (22) is in the shaft axis of main shaft (1), and above-mentioned balancer weight (4) is with the equal vertical major (1) of crank (21) and be arranged on main shaft (1) both sides in line.
7. automobile engine crankshaft according to claim 6 is characterized in that, described position structure is for being opened in the locating slot (41) on the balancer weight (4).
8. automobile engine crankshaft according to claim 6 is characterized in that, described position structure is for being arranged on the projection (42) on the balancer weight (4).
9. automobile engine crankshaft according to claim 7, it is characterized in that, described locating slot (41) is positioned at the end of balancer weight (4) and takes the shape of the letter U, and the shaft axis of the center line of described locating slot (41), rod journal (22) and the shaft axis setting of main shaft (1) are at grade.
10. automobile engine crankshaft according to claim 8, it is characterized in that, described projection (42) is a rectangle projection (42), described projection (42) is positioned at the end of balancer weight (4), and the shaft axis setting of the center line of described projection (42), rod journal (22) shaft axis and main shaft (1) at grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920308528XU CN201496387U (en) | 2009-08-21 | 2009-08-21 | Crank shaft of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920308528XU CN201496387U (en) | 2009-08-21 | 2009-08-21 | Crank shaft of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496387U true CN201496387U (en) | 2010-06-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920308528XU Expired - Fee Related CN201496387U (en) | 2009-08-21 | 2009-08-21 | Crank shaft of automobile engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN201496387U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015043207A1 (en) * | 2013-09-25 | 2015-04-02 | 北汽福田汽车股份有限公司 | Crankshaft assembly of inline four-cylinder engine and molding method therefor |
| CN104653289A (en) * | 2013-11-21 | 2015-05-27 | 北汽福田汽车股份有限公司 | Phase control method and structure for balance shaft of internal combustion engine |
| CN105074236A (en) * | 2013-02-08 | 2015-11-18 | 易安迪机车公司 | Crankshaft |
| CN105065428A (en) * | 2015-07-16 | 2015-11-18 | 浙江瑞朗锻造有限公司 | Multi-link transmission crankshaft for engine |
| CN106609686A (en) * | 2015-10-21 | 2017-05-03 | 北汽福田汽车股份有限公司 | Camshaft valve timing mechanism, engine and vehicle |
| CN111350751A (en) * | 2020-03-12 | 2020-06-30 | 江苏松林汽车零部件有限公司 | Sectional type nodular cast iron crankshaft |
-
2009
- 2009-08-21 CN CN200920308528XU patent/CN201496387U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105074236A (en) * | 2013-02-08 | 2015-11-18 | 易安迪机车公司 | Crankshaft |
| CN105074236B (en) * | 2013-02-08 | 2018-09-28 | 易安迪机车公司 | Bent axle |
| WO2015043207A1 (en) * | 2013-09-25 | 2015-04-02 | 北汽福田汽车股份有限公司 | Crankshaft assembly of inline four-cylinder engine and molding method therefor |
| CN104653289A (en) * | 2013-11-21 | 2015-05-27 | 北汽福田汽车股份有限公司 | Phase control method and structure for balance shaft of internal combustion engine |
| CN105065428A (en) * | 2015-07-16 | 2015-11-18 | 浙江瑞朗锻造有限公司 | Multi-link transmission crankshaft for engine |
| CN106609686A (en) * | 2015-10-21 | 2017-05-03 | 北汽福田汽车股份有限公司 | Camshaft valve timing mechanism, engine and vehicle |
| CN106609686B (en) * | 2015-10-21 | 2019-02-26 | 北汽福田汽车股份有限公司 | A kind of camshaft valve actuating mechanism, engine and vehicle |
| CN111350751A (en) * | 2020-03-12 | 2020-06-30 | 江苏松林汽车零部件有限公司 | Sectional type nodular cast iron crankshaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20130821 |