CN217355397U

CN217355397U - Engine flywheel

Info

Publication number: CN217355397U
Application number: CN202221077643.2U
Authority: CN
Inventors: 赵泉; 刘振锋
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-02
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses an engine flywheel, including the flywheel body, the flywheel body is discoid, a plurality of weight reduction hole has been seted up to the lateral wall of flywheel body, the counter bore has been seted up to the center department of flywheel body front end, the round ring channel has been seted up to the rear end face of flywheel body, make dissecting of flywheel body personally submit the W shape, special-shaped through-hole has been seted up to the bottom of counter bore, be equipped with bearing installation piece in the special-shaped through-hole, a plurality of bolt fastening through-holes have been seted up to the circumference on the terminal surface of bearing installation piece, the dead eye has been seted up at the middle part of bearing installation piece, be equipped with the bearing in the dead eye, the preceding terminal surface and the rear end face of counter bore are equipped with the retaining ring that restriction bearing installation piece removed respectively. The utility model can reduce the weight and the inertia to the utmost extent, and meanwhile, the annular groove can lead the flywheel to avoid stress concentration, thereby improving the structural strength of the flywheel; the bearing mounting blocks with different sizes can be selected according to the actual diameter of the crankshaft, and the machining procedures and the machining time are reduced.

Description

Engine flywheel

[ technical field ] A

The utility model belongs to the technical field of the engine accessories, concretely relates to engine flywheel.

[ background of the invention ]

The flywheel is one of the components of the engine, is assembled with the crankshaft and is a power output element of the engine, the flywheel is usually arranged at one end of the crankshaft, the structure of the flywheel is relatively simple, the flywheel is integrally a cast iron disc, the flywheel mainly has the function of storing energy and inertia outside the power stroke of the engine, and the flywheel can be used for reducing the speed fluctuation of the engine in the operation process. The flywheel end can be provided with a structure as a power output interface, for example, a gear train is designed at the flywheel end to drive a hydraulic pump to output, or a belt gear train is designed at the flywheel end to drive a belt wheel train related to the whole vehicle to run. The flywheel has a large moment of inertia, and the moment of inertia of the flywheel needs to be changed in response according to matching requirements of different vehicles.

The quality of flywheel self is very heavy, make the weight of whole car and follow the promotion easily, and the flywheel is at the in-process casting shaping not integrative of making, the diameter in the flywheel shaft hole of being not convenient for adjust, still need process the shaft hole of flywheel in the installation bearing, increase process and process time, consequently, how can also consider the bent axle suitability and the commonality of flywheel structure to different footpaths when falling heavy to the flywheel, this is the problem of waiting to solve urgently.

[ Utility model ] content

The utility model aims to provide an engine flywheel, which solves the problems that the existing flywheel is heavy and the weight of the whole vehicle is easy to be increased; the flywheel is formed by integral casting, and the adaptability and the universality of crankshafts with different shaft diameters are poor.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides an engine flywheel, includes the flywheel body, the flywheel body is discoid, a plurality of weight reduction hole has been seted up to the lateral wall of flywheel body, the counter bore has been seted up to the center department of flywheel body front end, the round ring channel has been seted up to the rear end face of flywheel body, makes dissecting of flywheel body personally submit the W shape, special-shaped through-hole has been seted up to the bottom of counter bore, be equipped with bearing installation piece in the special-shaped through-hole, a plurality of bolt fastening through-holes have been seted up to the circumference on the terminal surface of bearing installation piece, the dead eye has been seted up at the middle part of bearing installation piece, be equipped with the bearing in the dead eye, the preceding terminal surface and the rear end face of counter bore are equipped with the retaining ring that restriction bearing installation piece removed respectively.

Furthermore, the special-shaped through hole is a round hole, and a plurality of wedge-shaped grooves are formed in the circumference of the side wall of the round hole.

Furthermore, a first arc-shaped groove is formed in the short side of the wedge-shaped groove.

Furthermore, a threaded through hole is formed in the side wall of the annular groove in the rear end face of the flywheel body, the threaded through hole penetrates through the side wall of the long edge of the wedge-shaped groove from the side wall of the annular groove, and a second fixing bolt is arranged in the threaded through hole.

Furthermore, the bearing mounting block is of a circular metal structure, and the side wall of the bearing mounting block is provided with a plurality of wedge blocks corresponding to the wedge grooves of the special-shaped through hole.

Furthermore, a second arc-shaped groove is formed in the short edge of the wedge-shaped block, and the first arc-shaped groove on the end face of the wedge-shaped groove form a semi-arc-shaped groove.

Furthermore, semicircular bulges are arranged on the end faces, attached to the bearing mounting blocks, of the check rings and are arranged in the semicircular grooves.

Furthermore, a plurality of first through holes corresponding to the bolt fixing holes in the bearing mounting block are formed in the end face of the retainer ring.

Furthermore, a round through hole is formed in the bottom of the counter bore, two check rings are respectively provided with second through holes which are coaxial with the round through hole in the bottom of the counter bore, first fixing bolts are arranged in the round through hole in the counter bore and the second through holes of the check rings, the two check rings are fixed on two end faces of the counter bore, and the bearing mounting block is limited.

The utility model discloses the beneficial effect who reaches is:

the flywheel is provided with a plurality of weight reducing holes on the side wall for weight reduction, and the end surface of the flywheel is provided with the annular groove, so that the integral section of the flywheel forms a W-shaped weight reducing structure, the weight and the inertia can be reduced to the maximum extent, and meanwhile, the annular groove can prevent the stress concentration of the flywheel and improve the structural strength of the flywheel.

The flywheel optimizes the original central circular hole into the special-shaped through hole, and bearing mounting blocks with different sizes can be selected according to the actual diameter of the crankshaft, so that the processing procedures and the processing time are reduced; the retainer ring with the bulge is adopted, so that the relative position of the bearing mounting block can be effectively fixed, and the bearing mounting block is prevented from vibrating in the working process; meanwhile, a second fixing bolt is arranged for fixing the bearing mounting block, so that the stability of the bearing mounting block in the working process is further improved, and when the bearing needs to be replaced, the replacement work can be quickly completed only by detaching the bearing mounting block; meanwhile, the bearing mounting block and the retainer ring can be made of metal materials with light weight, and the overall weight of the flywheel can be reduced.

[ description of the drawings ]

In the drawings:

fig. 1 is a front view of the present invention;

fig. 2 is a rear view of the present invention;

fig. 3 is a first perspective view of the present invention;

fig. 4 is a second perspective view of the present invention;

fig. 5 is an exploded view of the present invention;

FIG. 6 is a partial schematic view at A of FIG. 5;

FIG. 7 is a partial schematic view at B of FIG. 5;

fig. 8 is a partial schematic view at C in fig. 5.

Reference numerals: 1. a flywheel body; 1-1, counter bores; 1-2, an annular groove; 1-3, reducing weight holes; 1-4, special-shaped through holes; 1-5, wedge-shaped grooves; 1-6, a first arc-shaped groove; 1-7, round through holes; 2. a retainer ring; 2-1, a first through hole; 2-2, a second through hole; 2-3, convex; 3. a first fixing bolt; 4. a second fixing bolt; 5. a bearing; 6. a bearing mounting block; 6-1, wedge-shaped blocks; 6-2, a second arc-shaped groove; 6-3, fixing the through hole by using a bolt.

[ detailed description ] embodiments

The following is a detailed description of specific embodiments.

The present invention will be described in further detail with reference to the following embodiments. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.

As shown in figures 1-8, an engine flywheel comprises a flywheel body 1, wherein the flywheel body 1 is disc-shaped, a plurality of weight reducing holes 1-3 are formed in the side wall of the flywheel body 1, a counter bore 1-1 is formed in the center of the front end of the flywheel body 1-3, a circle of annular groove 1-2 is formed in the rear end face of the flywheel body 1, the cutting surface of the flywheel body 1 is W-shaped, a special-shaped through hole 1-4 is formed in the bottom of the counter bore 1-1, the special-shaped through hole 1-4 is a circular hole, a plurality of wedge grooves 1-5 are formed in the circumference of the side wall of the circular hole, a first arc-shaped groove 1-6 is formed in the short edge of the wedge groove 1-2, a bearing mounting block 6 is arranged in the special-shaped through hole 1-4, the bearing mounting block 6 is of an annular metal structure, and a plurality of wedge blocks 6-1 corresponding to the wedge grooves 1-5 of the special-shaped through hole 1-4 are arranged on the side wall, a second arc-shaped groove 6-2 is formed in the short edge of the wedge-shaped block 6-1, and a semi-arc-shaped groove is formed by the second arc-shaped groove and the first arc-shaped groove 1-6 on the end face of the wedge-shaped groove 1-5; the circumference of the end face of the bearing mounting block 6 is provided with a plurality of bolt fixing through holes 6-3, the middle part of the bearing mounting block 6-3 is provided with a bearing hole, a bearing 5 is arranged in the bearing hole, the front end face and the rear end face of the counter bore 1-1 are respectively provided with a retaining ring 2 for limiting the movement of the bearing mounting block 6, the end face where the retaining ring 2 is jointed with the bearing mounting block 6 is provided with a semicircular bulge 2-3, the semicircular bulge 2-3 is arranged in a semicircular groove, the end face of the retaining ring 2 is provided with a plurality of first through holes 2-1 corresponding to the bolt fixing holes 6-3 on the bearing mounting block 6, the bottom of the counter bore 1-1 is provided with circular through holes 1-7, the two retaining rings 2 are respectively provided with second through holes 2-2 which are coaxial with the circular through holes 1-7 at the bottom of the counter bore 1-1, the circular through holes 1-1 of the counter bore 1 and the second through holes 2-2 are internally provided with first fixing holes 2 And fixing bolts 3, namely fixing the two check rings 2 on two end faces of the counter bore 1-1, and limiting the bearing mounting block 6.

The side wall of the annular groove 1-2 on the rear end face of the flywheel body 1 is provided with a threaded through hole, the threaded through hole penetrates through the side wall of the long side of the wedge-shaped groove 1-5 from the side wall of the annular groove 1-2, and a second fixing bolt 4 is arranged in the threaded through hole.

During installation, firstly, the bearing 5 is installed in the bearing installation block 6, then the bearing installation block 6 is installed in the special-shaped through hole 1-4 of the flywheel body 1, then the two check rings 2 are respectively fixed on two end faces of the counter bore 1-1 by using the first fixing bolt 3, in the fixing process of the check rings 2, the bulges 2-3 of the check rings 2 can be pressed into the semi-arc-shaped grooves formed by the first arc-shaped grooves 1-6 and the second arc-shaped grooves 6-2 to compress and position the semi-arc-shaped grooves, so that the bearing positioning block does not vibrate in the working process of the bearing positioning block 6, meanwhile, the bearing fixing block 6 can be further stabilized by installing the second fixing bolt 4, and the stability of the bearing fixing block 6 in the working process is further improved.

The utility model discloses set up a plurality of heavy holes of falling on its lateral wall and remove heavily to set up the ring channel on its terminal surface, make the holistic section of flywheel form a W-shaped and fall heavy structure, can furthest fall heavy, reduce inertia, the ring channel can make the flywheel avoid stress concentration simultaneously, promotes the structural strength of flywheel; the original central round hole is optimized into a special-shaped through hole, and bearing mounting blocks with different sizes can be selected according to the actual diameter of the crankshaft, so that the machining procedures and the machining time are reduced; the retainer ring with the bulge is adopted, so that the relative position of the bearing mounting block can be effectively fixed, and the bearing mounting block is prevented from vibrating in the working process; meanwhile, a second fixing bolt is arranged for fixing the bearing mounting block, so that the stability of the bearing mounting block in the working process is further improved, and when the bearing needs to be replaced, the replacement work can be quickly completed only by detaching the bearing mounting block; meanwhile, the bearing mounting block and the check ring can be made of metal materials with lighter weight, and the overall weight of the flywheel can be reduced.

Claims

1. The utility model provides an engine flywheel, includes the flywheel body, the flywheel body is discoid, a plurality of weight reduction hole has been seted up to the lateral wall of flywheel body, the counter bore has been seted up to the center department of flywheel body front end, the round ring channel has been seted up to the rear end face of flywheel body, makes sectioning of flywheel body personally submit W shape, its characterized in that: the special-shaped through hole is formed in the bottom of the counter bore, a bearing installation block is arranged in the special-shaped through hole, a plurality of bolt fixing through holes are formed in the circumference of the end face of the bearing installation block, a bearing hole is formed in the middle of the bearing installation block, a bearing is arranged in the bearing hole, and check rings for limiting the movement of the bearing installation block are arranged on the front end face and the rear end face of the counter bore respectively.

2. An engine flywheel according to claim 1 wherein: the special-shaped through hole is in a round hole structure, and a plurality of wedge-shaped grooves are formed in the circumference of the side wall of the round hole.

3. An engine flywheel according to claim 2 wherein: a first arc-shaped groove is formed in the short edge of the wedge-shaped groove.

4. An engine flywheel according to claim 2 wherein: the side wall of the annular groove of the rear end face of the flywheel body is provided with a threaded through hole, the threaded through hole penetrates through the side wall of the long edge of the wedge-shaped groove from the side wall of the annular groove, and a second fixing bolt is arranged in the threaded through hole.

5. An engine flywheel according to claim 3 wherein: the bearing mounting block is of a circular metal structure, and the side wall of the bearing mounting block is provided with a plurality of wedge blocks corresponding to the wedge grooves of the special-shaped through holes.

6. An engine flywheel according to claim 5 wherein: and a second arc-shaped groove is formed in the short edge of the wedge-shaped block, and a semi-arc-shaped groove is formed by the second arc-shaped groove and the first arc-shaped groove on the end surface of the wedge-shaped groove.

7. An engine flywheel according to claim 6 wherein: and semicircular bulges are arranged on the end faces, attached to the bearing mounting blocks, of the check rings and are arranged in the semicircular arc grooves.

8. An engine flywheel according to claim 1 wherein: the end face of the retainer ring is provided with a plurality of first through holes corresponding to the bolt fixing holes on the bearing mounting block.

9. An engine flywheel according to claim 1 wherein: the bearing mounting block is characterized in that a circular through hole is formed in the bottom of the counter bore, two check rings are respectively provided with second through holes which are coaxial with the circular through hole in the bottom of the counter bore, first fixing bolts are arranged in the circular through hole in the counter bore and the second through holes of the check rings, the two check rings are fixed on two end faces of the counter bore, and the bearing mounting block is limited.