CN204493576U - A kind of crankshaft of diesel engine flywheel assembly - Google Patents
A kind of crankshaft of diesel engine flywheel assembly Download PDFInfo
- Publication number
- CN204493576U CN204493576U CN201520180588.3U CN201520180588U CN204493576U CN 204493576 U CN204493576 U CN 204493576U CN 201520180588 U CN201520180588 U CN 201520180588U CN 204493576 U CN204493576 U CN 204493576U
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- China
- Prior art keywords
- flywheel
- crankshaft
- equilibrium block
- secondary mass
- diesel engine
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Abstract
The utility model relates to a kind of crankshaft of diesel engine flywheel assembly, includes bent axle, crankshaft vibration damping belt pulley, timing driving sprocket wheel, Oil pump drive gear, crankshaft rotation speed signal panel and flywheel; Described flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel; Shock-absorbing spring is provided with between described preliminary quality flywheel and described secondary mass flywheel; The thickness of described preliminary quality flywheel is greater than the thickness of described secondary mass flywheel.Can several angle be relatively rotated between preliminary quality flywheel and secondary mass flywheel, utilize shock-absorbing spring, the torsional vibration that motor passes to transmission system can be effectively reduced, reduce vibration noise, obviously improve the NVH performance of vehicle.
Description
Technical field
The utility model belongs to technical field of engines, specifically refers to a kind of crankshaft of diesel engine flywheel assembly.
Background technique
Crankshaft-flywheel assembly primarily of bent axle, flywheel, crankshaft vibration damping belt pulley, crankshaft rotation speed signal panel and some not same-action part and accessory composition.Its major function connects piston rod part, the to-and-fro motion of piston changed into the rotary motion of bent axle, thus convert chemical energy to kinetic energy, output to the transmission system of automobile.Flywheel has storage and discharges the function of kinetic energy, and improve the uniformity of engine running, transmitting torque is to car transmissions simultaneously, is the actuator of clutch.
Existing diesel crankshaft-flywheel assembly has flywheel, bent axle, crankshaft vibration damping belt pulley, crankshaft rotation speed signal panel, Oil pump drive gear usually, timing driving sprocket wheel, trunnion shaft driving wheel.Wherein flywheel is freewheel, is a rigid disc, without damping effect.
Crankshaft rotation speed signal panel is arranged on crankshaft front end or is integrated on flywheel; Driving wheel hot jacket, at crankshaft front end, forms interference fit, or has at least a driving wheel integrally forge or be cast in crankshaft front end.
The shortcoming of existing diesel crankshaft-flywheel assembly is, the to-and-fro motion of motor and the irregular rotation of the sequentially fired bent axle brought of cylinder, and the natural frequency that power transmission system has can be converted into torsional vibration the irregular rotation that motor produces again.Because freewheel is a rigid disc, the torsional vibration produced power train be can be directly delivered to during engine operation, vibration and the noise of vehicle body caused.Especially for the high torque high speed diesel engine of passenger car, especially obviously.
And crankshaft front end is integrally formed driving wheel, then increase the difficulty of processing of bent axle, interference hot jacket then increases the difficulty of assembling, and these two kinds of methods are all unfavorable for repair demolition.Crankshaft front end arranges trunnion shaft driving wheel, can increase axial length of crank shaft, and assembling is complicated.
Model utility content
The purpose of this utility model is to provide a kind of improvement opportunity scheme of crankshaft of diesel engine flywheel assembly, by the technical program, effectively can reduce the torsional vibration that motor is delivered to transmission system, improve the NVH performance of vehicle.
The utility model is achieved through the following technical solutions:
A kind of crankshaft of diesel engine flywheel assembly, includes bent axle, crankshaft vibration damping belt pulley, timing driving sprocket wheel, Oil pump drive gear, crankshaft rotation speed signal panel and flywheel;
The equilibrium block that described bent axle includes crankshaft body and is connected with described crankshaft body one;
Described Oil pump drive gear, described timing driving sprocket wheel and described crankshaft vibration damping belt pulley order is installed on one end of described crankshaft body;
Described crankshaft rotation speed signal panel is assembled on the described equilibrium block away from described Oil pump drive gear one end; Described flywheel is installed to crankshaft body one end close with described crankshaft rotation speed signal panel;
Described flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel; Shock-absorbing spring is provided with between described preliminary quality flywheel and described secondary mass flywheel; Described preliminary quality flywheel is arranged between described crankshaft body and described secondary mass flywheel, and described preliminary quality flywheel is fixed on described crankshaft body;
The thickness of described preliminary quality flywheel is greater than the thickness of described secondary mass flywheel.
Described equilibrium block is eight, is respectively the first equilibrium block, the second equilibrium block, the 3rd equilibrium block, the 4th equilibrium block, the 5th equilibrium block, the 6th equilibrium block, the 7th equilibrium block, the 8th equilibrium block; Described first equilibrium block and described Oil pump drive gear close; Described crankshaft rotation speed signal panel is assembled on described 8th equilibrium block.
Set angle can be relatively rotated between described preliminary quality flywheel and described secondary mass flywheel.
Described set angle is less than between 30 degree being greater than 0 degree.
The hardness of described preliminary quality flywheel is less than the hardness of described secondary mass flywheel.
Described shock-absorbing spring is at least two, and with the center line of described crankshaft body for being symmetrical arranged.
One end of described crankshaft body is provided with flange plate, and described flywheel is arranged on described flange plate.
Described secondary mass flywheel is provided with and dodges hole; Dodge hole described in bolt of flywheel passes described preliminary quality flywheel is rigidly secured on described flange plate.
Described bolt of flywheel is interior blossom type bolt.
The beneficial effects of the utility model are:
1, crankshaft-flywheel assembly uses double mass flywheel, double mass flywheel divides preliminary quality flywheel and secondary mass flywheel two-part, there is shock-absorbing spring structure between the two, several angle can be relatively rotated between preliminary quality flywheel and secondary mass flywheel, utilize shock-absorbing spring, the torsional vibration that motor passes to transmission system can be effectively reduced, reduce vibration noise, obviously improve the NVH performance of vehicle; For the high-speed diesel engine of high moment of torsion, during coupling passenger car, double mass flywheel structure is particularly necessary.
2, the bolt of flywheel of crankshaft-flywheel assembly is interior blossom type, and bore dia dodged by the bolt that can reduce on secondary mass flywheel like this, ensures the intensity of secondary mass flywheel.
3, the front end of described bent axle only has crankshaft vibration damping belt pulley, timing driving sprocket wheel, Oil pump drive gear, and structure is simple, reduces the axial length of crankshaft body; And be Spielpassung, by flat key location, produce, easy to install and use.
4, described crankshaft rotation speed signal panel is arranged on the 8th equilibrium block of bent axle, is convenient to sensor reading signal.
Accompanying drawing explanation
Fig. 1 is the utility model crankshaft-flywheel assembly decomposing schematic representation;
Fig. 2 is the structural representation of the utility model flywheel;
Fig. 3 is the utility model crankshaft-flywheel modular construction schematic diagram.
Description of reference numerals
1 crankshaft vibration damping belt pulley, 2 timing driving sprocket wheels, 3 Oil pump drive gears, 4 bent axles, 5 crankshaft rotation speed signal panels, 6 flywheels, 7 bolts of flywheel, 8 screws, 9 first flat keys, 10 second flat keys, 11 bolt assemblies, 12 preliminary quality flywheels, 13 shock-absorbing springs, 14 secondary mass flywheels, 15 dodge hole, 41 crankshaft body, 42 first equilibrium blocks, 43 second equilibrium blocks, 44 the 3rd equilibrium blocks, 45 the 4th equilibrium blocks, 46 the 5th equilibrium blocks, 47 the 6th equilibrium blocks, 48 the 7th equilibrium blocks, 49 the 8th equilibrium blocks, 50 flange plate.
Embodiment
Describe the technical solution of the utility model in detail by the following examples, following embodiment is only exemplary, only can be used for explaining and the technical solution of the utility model being described, and can not be interpreted as being the restriction to technical solutions of the utility model.
The utility model provides a kind of crankshaft of diesel engine flywheel assembly as shown in Figure 1 to Figure 3, includes bent axle 4, crankshaft vibration damping belt pulley 1, timing driving sprocket wheel 2, Oil pump drive gear 3, crankshaft rotation speed signal panel 5 and flywheel 6;
The equilibrium block that described bent axle 4 includes crankshaft body 41 and is connected with described crankshaft body 41 one;
Described Oil pump drive gear 3, described timing driving sprocket wheel 2 and described crankshaft vibration damping belt pulley 1 order is installed on one end of described crankshaft body 41;
Described crankshaft rotation speed signal panel 5 is assembled on the described equilibrium block away from described Oil pump drive gear 3 one end; Described flywheel 6 is installed to crankshaft body 41 one end close with described crankshaft rotation speed signal panel 5;
Described flywheel 6 is double mass flywheel, includes preliminary quality flywheel 12 and secondary mass flywheel 14; Shock-absorbing spring 13 is provided with between described preliminary quality flywheel 12 and described secondary mass flywheel 13; Described preliminary quality flywheel 12 is arranged between described crankshaft body 41 and described secondary mass flywheel 14, and described preliminary quality flywheel 12 is fixed on described crankshaft body 41;
The thickness of described preliminary quality flywheel 12 is greater than the thickness of described secondary mass flywheel 14, refer to that the thickness of preliminary quality flywheel body is greater than the thickness of secondary mass flywheel body herein, the thickness of indication is with the thickness of the axial direction of crankshaft body in this application.In this application, the thickness of preliminary quality flywheel is 1.01-1.2 times of the thickness of secondary mass flywheel.
Set angle can be relatively rotated between described preliminary quality flywheel 12 and described secondary mass flywheel 14.
Described set angle is less than between 30 degree being greater than 0 degree.
The hardness of described preliminary quality flywheel 12 is less than the hardness of described secondary mass flywheel 14; In this application, the difference of the hardness of preliminary quality flywheel 12 and the hardness of secondary mass flywheel 14 is between 1-10HRC (Rockwell hardness unit).
Described shock-absorbing spring 13 is at least two, and with the center line of described crankshaft body 41 for being symmetrical arranged.
The application is by being greater than the thickness of secondary mass flywheel 14 by the thickness of preliminary quality flywheel 12, like this, the vibration that motor produces when carrying out work can distribute on preliminary quality flywheel 14, and then the ocsillator strenght reduced in per unit volume, again by the effectiveness in vibration suppression of shock-absorbing spring 13, when vibration through weakening passes to secondary mass flywheel 14 again, ocsillator strenght is significantly weakened.Meanwhile, adopt the hardness of preliminary quality flywheel 12 to be less than the hardness of secondary mass flywheel 14, realize being greater than the absorptivity of secondary mass flywheel 14 to vibration in the absorptivity of preliminary quality flywheel 12 to vibration, improve effectiveness in vibration suppression.
Described crankshaft vibration damping belt pulley 1, timing driving sprocket wheel 2, Oil pump drive gear 3 is from being arranged on successively inward on the front end axle of engine crankshaft body 41 outward; Timing driving sprocket wheel 2 and Oil pump drive gear 3 are located by the first flat key 9, and crankshaft vibration damping belt pulley 1 is located by the second flat key 10, and three is urgent by bolt assembly 11.
Described equilibrium block is eight, is respectively the first equilibrium block 42, second equilibrium block 43, the 3rd equilibrium block 44, the 4th equilibrium block 45, the 5th equilibrium block 46, the 6th equilibrium block 47, the 7th equilibrium block 48, the 8th equilibrium block 49; Described first equilibrium block 42 is close with described Oil pump drive gear 3; Described crankshaft rotation speed signal panel 5 is assembled on described 8th equilibrium block 49, and urgent by screw 8.
One end of described crankshaft body 41 is provided with flange plate 50, and described flywheel 6 is arranged on described flange plate 50.
Described secondary mass flywheel 14 is provided with and dodges hole 15; Dodge hole 15 described in bolt of flywheel 7 passes described preliminary quality flywheel 12 is rigidly secured on described flange plate 50.Described bolt of flywheel 7 is interior blossom type bolt, can reduce the diameter that hole 50 dodged by bolt like this, ensures the intensity of secondary mass flywheel 14.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalency thereof.
Claims (9)
1. a crankshaft of diesel engine flywheel assembly, includes bent axle, crankshaft vibration damping belt pulley, timing driving sprocket wheel, Oil pump drive gear, crankshaft rotation speed signal panel and flywheel;
The equilibrium block that described bent axle includes crankshaft body and is connected with described crankshaft body one; It is characterized in that:
Described Oil pump drive gear, described timing driving sprocket wheel and described crankshaft vibration damping belt pulley order is installed on one end of described crankshaft body;
Described crankshaft rotation speed signal panel is assembled on the described equilibrium block away from described Oil pump drive gear one end; Described flywheel is installed to crankshaft body one end close with described crankshaft rotation speed signal panel;
Described flywheel is double mass flywheel, includes preliminary quality flywheel and secondary mass flywheel; Shock-absorbing spring is provided with between described preliminary quality flywheel and described secondary mass flywheel; Described preliminary quality flywheel is arranged between described crankshaft body and described secondary mass flywheel, and described preliminary quality flywheel is fixed on described crankshaft body;
The thickness of described preliminary quality flywheel is greater than the thickness of described secondary mass flywheel.
2. crankshaft of diesel engine flywheel assembly according to claim 1, it is characterized in that: described equilibrium block is eight, be respectively the first equilibrium block, the second equilibrium block, the 3rd equilibrium block, the 4th equilibrium block, the 5th equilibrium block, the 6th equilibrium block, the 7th equilibrium block, the 8th equilibrium block; Described first equilibrium block and described Oil pump drive gear close; Described crankshaft rotation speed signal panel is assembled on described 8th equilibrium block.
3. crankshaft of diesel engine flywheel assembly according to claim 1, is characterized in that: can relatively rotate set angle between described preliminary quality flywheel and described secondary mass flywheel.
4. crankshaft of diesel engine flywheel assembly according to claim 3, is characterized in that: described set angle is less than between 30 degree being greater than 0 degree.
5. crankshaft of diesel engine flywheel assembly according to claim 1, is characterized in that: the hardness of described preliminary quality flywheel is less than the hardness of described secondary mass flywheel.
6. crankshaft of diesel engine flywheel assembly according to claim 1, is characterized in that: described shock-absorbing spring is at least two, and with the center line of described crankshaft body for being symmetrical arranged.
7. crankshaft of diesel engine flywheel assembly according to claim 1, it is characterized in that: one end of described crankshaft body is provided with flange plate, described flywheel is arranged on described flange plate.
8. crankshaft of diesel engine flywheel assembly according to claim 7, is characterized in that: be provided with on described secondary mass flywheel and dodge hole; Dodge hole described in bolt of flywheel passes described preliminary quality flywheel is rigidly secured on described flange plate.
9. crankshaft of diesel engine flywheel assembly according to claim 8, is characterized in that: described bolt of flywheel is interior blossom type bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180588.3U CN204493576U (en) | 2015-03-27 | 2015-03-27 | A kind of crankshaft of diesel engine flywheel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180588.3U CN204493576U (en) | 2015-03-27 | 2015-03-27 | A kind of crankshaft of diesel engine flywheel assembly |
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| Publication Number | Publication Date |
|---|---|
| CN204493576U true CN204493576U (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520180588.3U Expired - Fee Related CN204493576U (en) | 2015-03-27 | 2015-03-27 | A kind of crankshaft of diesel engine flywheel assembly |
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| CN (1) | CN204493576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712705A (en) * | 2015-03-27 | 2015-06-17 | 安徽江淮汽车股份有限公司 | Crankshaft flywheel assembly of diesel engine |
-
2015
- 2015-03-27 CN CN201520180588.3U patent/CN204493576U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712705A (en) * | 2015-03-27 | 2015-06-17 | 安徽江淮汽车股份有限公司 | Crankshaft flywheel assembly of diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20190327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |