CN215763106U

CN215763106U - Engine front end output structure

Info

Publication number: CN215763106U
Application number: CN202121600203.6U
Authority: CN
Inventors: 王法耀; 郑香港; 邱秀广; 黄博
Original assignee: Shandong Yunnei Power Co ltd; Kunming Yunnei Power Co Ltd
Current assignee: Shandong Yunnei Power Co ltd; Kunming Yunnei Power Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-02-08
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to an output structure at the front end of an engine, which comprises a crankshaft belt pulley front wheel (1), a crankshaft belt pulley (2), a crankshaft belt pulley bolt (3), a crankshaft (4), a gear chamber cover (5) and a bearing seat (6); the crankshaft belt pulley (2) is arranged between the crankshaft belt pulley front wheel (1) and the crankshaft (4), the inner end of the crankshaft belt pulley (2) is sleeved with the crankshaft (4) and fixed through a crankshaft belt pulley bolt (3), and the outer end of the crankshaft belt pulley is fixed with the crankshaft belt pulley front wheel (1) through a bolt (7); the bearing seat (6) is sleeved outside the gear chamber cover (5) and is fixed with the crankshaft pulley (2) through a roller bearing (8) and an oil seal (9); the utility model not only increases the load which can be borne by the front end of the engine, but also improves the safety of relevant parts of the front end of the engine, and can prolong the service life of the engine, wherein the proportion of the front end output of the engine in the total output of the engine exceeds 15%.

Description

Engine front end output structure

Technical Field

The utility model belongs to the field of mechanical transmission structures, and particularly relates to a front-end output structure of an engine.

Background

In the application and development field of diesel engines, particularly the application and development field of non-road diesel engines, the engines are rich in the characteristic of diversified output ends, 3-5 power take-off ports with different structures can be configured on a single engine, the flywheel end of the traditional engine is usually the main power take-off port, but on the machinery with diversified transmission systems such as corn harvesters, engineering machinery and the like, the front end of the engine needs to have the capacity of bearing partial loads of the engine.

The engine front end output structure commonly used at present is all integrated to the crankshaft pulley on, and the terminal surface has the connecting thread hole of a certain amount and is used for guaranteeing the central tang of axiality before the crankshaft pulley, has belt drive ability through installation crankshaft pulley front wheel, perhaps lug connection universal joint output shaft output power, and this kind of structure is comparatively simple. But has the following disadvantages: (1) the transmission of moment leans on the connecting bolt completely, and the overall arrangement of connecting bolt is comparatively inseparable, can make the connecting bolt rupture when the moment of crankshaft pulley transmission is too big, consequently can not transmit too big moment. (2) When what connect on the crankshaft pulley is the multislot crankshaft pulley front wheel, the transmission of power is carried out through the antithetical couplet group area to engine crankshaft pulley, and on the crankshaft pulley was used to the tensioning force of belt and the gravity of multislot pulley, because of there being not the strong point, the lateral force that the crankshaft pulley bore directly conducted the bent axle on, made oil blanket and spindle bush unusual wearing and tearing easily, can lead to the bent axle to split when serious. (3) Under the condition that the crankshaft pulley is connected with equipment with overlarge load, the rotation inertia of the crankshaft pulley is large, when an engine stops, the inertia of the crankshaft pulley can cause the crankshaft pulley and a crankshaft pulley bolt to move reversely, so that the crankshaft pulley bolt is loosened, and the engine accident is caused.

Disclosure of Invention

In order to overcome the problems in the prior art, the utility model provides an engine front end output structure, which not only increases the load which can be borne by the engine front end, but also improves the safety of relevant parts of the engine front end, and the use proves that the utility model can increase the service life of the engine, wherein the engine front end output accounts for more than 15% of the total output of the engine.

In order to realize the purpose, the utility model is realized by the following technical scheme:

the front-end output structure of the engine comprises a crankshaft belt pulley front wheel 1, a crankshaft belt pulley 2, a crankshaft belt pulley bolt 3, a crankshaft 4, a gear chamber cover 5 and a bearing seat 6; the crankshaft belt pulley 2 is arranged between the crankshaft belt pulley front wheel 1 and the crankshaft 4, the inner end of the crankshaft belt pulley 2 is sleeved with the crankshaft 4 and fixed through a crankshaft belt pulley bolt 3, and the outer end of the crankshaft belt pulley 2 is fixed with the crankshaft belt pulley front wheel 1 through a bolt 7; the bearing seat 6 is sleeved outside the gear chamber cover 5 and is fixed with the crankshaft pulley 2 through a roller bearing 8 and an oil seal 9.

Preferably, a crankshaft pulley pressing plate 10 is arranged between the crankshaft pulley bolt 3 and the crankshaft 4; and a check washer 11 is arranged between the crankshaft pulley pressure plate 10 and the crankshaft pulley bolt 3.

Preferably, the crankshaft pulley pressure plate 10 is provided with a key groove and a spigot; the crankshaft 4 and the outer side surface and the inner side surface of the crankshaft pulley 2 are oppositely provided with key grooves communicated with a crankshaft pulley pressing plate 10, and the crankshaft 4, the crankshaft pulley 2 and the crankshaft pulley pressing plate 10 are further fixed through flat keys 12.

Preferably, the lock washer 11 is composed of two washers, the inner end of each washer is provided with teeth, and the teeth are engaged with each other.

Preferably, the crankshaft pulley front wheel 1 and the crankshaft pulley 2 are respectively provided with a relative positioning pin hole, the crankshaft pulley 2 is provided with a positioning pin spigot, and the crankshaft pulley front wheel 1 and the crankshaft pulley 2 are further fixed through a positioning pin 13.

Preferably, the outer ring of the inner end of the crank pulley 2 is step-shaped; the roller bearing 8 and the oil seal 9 are respectively fixed on different step surfaces, and a gap is reserved between the two.

Preferably, a reinforcing rib 14 is arranged outside the bearing seat 6.

The utility model has the beneficial effects that:

the utility model not only increases the load which can be borne by the front end of the engine, but also improves the safety of relevant parts of the front end of the engine, and can prolong the service life of the engine, wherein the proportion of the front end output of the engine in the total output of the engine exceeds 15%.

Drawings

FIG. 1 is a structural cross-sectional view of the present invention;

FIG. 2 is a partial sectional view of the present invention;

FIG. 3 is a second partial sectional view of the present invention;

FIG. 4 is a schematic view of the lock washer of the present invention;

in the figure, 1-crankshaft pulley front wheel, 2-crankshaft pulley, 3-crankshaft pulley bolt, 4-crankshaft, 5-gear chamber cover, 6-bearing seat, 7-bolt, 8-roller bearing, 9-oil seal, 10-crankshaft pulley pressing plate, 11-check washer, 12-flat key, 13-locating pin and 14-strengthening rib.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding of the skilled person.

As shown in fig. 1-4, the front-end output structure of the engine comprises a front crankshaft pulley 1, a front crankshaft pulley 2, a crankshaft pulley bolt 3, a crankshaft 4, a gear chamber cover 5 and a bearing seat 6.

The crankshaft pulley 2 is arranged between the crankshaft pulley front wheel 1 and the crankshaft 4, the inner end of the crankshaft pulley 2 is sleeved with the crankshaft 4 and fixed through a crankshaft pulley bolt 3, a crankshaft pulley pressing plate 10 is arranged between the crankshaft pulley bolt 3 and the crankshaft 4, and a check washer 11 is arranged between the crankshaft pulley pressing plate 10 and the crankshaft pulley bolt 3. The structure can increase the anti-load capacity of the front end of the crankshaft 4 and reduce the abnormal abrasion of the crankshaft 4, the oil seal 9 and the main shaft bushing.

The outer end of the crankshaft pulley 2 is fixed with the crankshaft pulley front wheel 1 through a bolt 7, the crankshaft pulley front wheel 1 and the crankshaft pulley 2 are respectively provided with a relative positioning pin hole, the crankshaft pulley 2 is provided with a positioning pin spigot, and the crankshaft pulley front wheel 1 and the crankshaft pulley 2 are further fixed through a positioning pin 13. After the engine is installed, the positioning pin 13 is installed in the positioning pin hole of the crankshaft pulley 2, the crankshaft pulley front wheel 1 is positioned through the spigot and the positioning pin 13, and then the bolt is used for fastening, so that the installation convenience is improved.

As a preferred technical scheme, a key groove and a spigot are arranged on the crankshaft pulley pressure plate 10. The crankshaft 4 and the outer side surface and the inner side surface of the crankshaft pulley 2 are oppositely provided with key grooves communicated with a crankshaft pulley pressing plate 10, and the crankshaft 4, the crankshaft pulley 2 and the crankshaft pulley pressing plate 10 are further fixed through flat keys 12. The three are connected by the flat key 12, so that the transmission torsion borne by part of the crankshaft pulley bolt 3 can be shared, the crankshaft pulley bolt 3 is prevented from being damaged due to overlarge acceptance, and the problem of loosening of the crankshaft pulley bolt 3 caused by halt or overlarge deceleration inertia can be prevented. Through the connection of flat key 12, can guarantee the stability of position between bent axle 4, bent axle belt pulley 2 and bent axle belt pulley clamp plate 10, prevent to become flexible in the transmission process to produce destructive vibrations because of becoming flexible.

The anti-loose washer 11 is composed of two washers, the inner ends of which are provided with teeth, and the teeth are mutually meshed. The loosening gasket with the structure has a certain elastic moving space, and not only can play a role in loosening, but also has a shock-resistant role.

The bearing seat 6 is sleeved outside the gear chamber cover 5 and fixed with the crankshaft pulley 2 through the roller bearing 8 and the oil seal 9, and the roller bearing 8 plays a good supporting role on the crankshaft pulley 2. The outer ring of the inner end of the crankshaft belt pulley 2 is step-shaped, the roller bearing 8 and the oil seal 9 are respectively fixed on different step surfaces, and a gap is reserved between the roller bearing 8 and the oil seal 9. The bearing block 6 plays a role in fixing the crankshaft 4 and the crank pulley 2, the roller bearing 8 and the oil seal 9, and the bearing block 6 can share part of lateral force to prevent damage of parts. And a reinforcing rib 14 is arranged outside the bearing seat 6, so that the bearing capacity of the bearing seat 6 can be improved.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the utility model, and that, although the utility model has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the utility model as defined by the appended claims.

Claims

1. An engine front end output structure characterized in that: the front-end output structure of the engine comprises a crankshaft belt pulley front wheel (1), a crankshaft belt pulley (2), a crankshaft belt pulley bolt (3), a crankshaft (4), a gear chamber cover (5) and a bearing seat (6); the crankshaft belt pulley (2) is arranged between the crankshaft belt pulley front wheel (1) and the crankshaft (4), the inner end of the crankshaft belt pulley (2) is sleeved with the crankshaft (4) and fixed through a crankshaft belt pulley bolt (3), and the outer end of the crankshaft belt pulley is fixed with the crankshaft belt pulley front wheel (1) through a bolt (7); the bearing seat (6) is sleeved outside the gear chamber cover (5) and is fixed with the crankshaft pulley (2) through a roller bearing (8) and an oil seal (9).

2. An engine front end output structure according to claim 1, characterized in that: a crankshaft pulley pressing plate (10) is arranged between the crankshaft pulley bolt (3) and the crankshaft (4); a check washer (11) is arranged between the crankshaft pulley pressing plate (10) and the crankshaft pulley bolt (3).

3. An engine front end output structure according to claim 2, characterized in that: a key groove and a spigot are arranged on the crankshaft pulley pressing plate (10); the crank shaft (4), the outer side face and the inner side face of the crank shaft belt pulley (2) are oppositely provided with key grooves communicated with the crank shaft belt pulley pressing plate (10), and the crank shaft (4), the crank shaft belt pulley (2) and the crank shaft belt pulley pressing plate (10) are further fixed through flat keys (12).

4. An engine front end output structure according to claim 2, characterized in that: the anti-loosening gasket (11) is composed of two gaskets, wherein teeth are arranged at the inner end of each gasket, and the teeth are meshed with each other.

5. An engine front end output structure according to any one of claims 1 to 4, characterized in that: the crankshaft pulley front wheel (1) and the crankshaft pulley (2) are respectively provided with a relative positioning pin hole, a positioning pin spigot is arranged on the crankshaft pulley (2), and the crankshaft pulley front wheel (1) and the crankshaft pulley (2) are further fixed through a positioning pin (13).

6. An engine front end output structure according to any one of claims 1 to 4, characterized in that: the outer ring of the inner end of the crankshaft pulley (2) is step-shaped; the roller bearing (8) and the oil seal (9) are respectively fixed on different step surfaces, and a gap is reserved between the two.

7. An engine front end output structure according to claim 1, characterized in that: and a reinforcing rib (14) is arranged outside the bearing seat (6).