CN217761893U

CN217761893U - Low-noise damping flywheel for diesel engine

Info

Publication number: CN217761893U
Application number: CN202221717204.3U
Authority: CN
Inventors: 季发宝; 于宗孝; 季鸿胜; 陆伟善
Original assignee: Weifang Zhongxing Machinery Co ltd
Current assignee: Weifang Zhongxing Machinery Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-11-08
Anticipated expiration: 2032-07-05

Abstract

The utility model discloses a low noise shock attenuation flywheel for diesel engine mainly relates to the flywheel field. Comprises a flywheel body and a fastener; the fastener includes the boss portion with crankshaft key-type connection, the central authorities of flywheel body are equipped with the complex circular port of pegging graft with boss portion, the outer end of boss portion is equipped with rather than integrated into one piece's location portion, the week side annular distribution of location portion has a plurality of outside bellied extensions, be equipped with on the extension rather than screw-thread fit's heterotypic bolt, heterotypic bolt is equally with flywheel body threaded connection. The beneficial effects of the utility model reside in that: the crankshaft assembly has high tightness and can reduce vibration and noise during operation.

Description

Low-noise damping flywheel for diesel engine

Technical Field

The utility model relates to a flywheel field specifically is a low noise shock attenuation flywheel for diesel engine.

Background

Diesel engines are usually equipped with a flywheel for storing energy in a wheel form for a large moment of inertia. During assembly, the flywheel and the crankshaft are in key connection and fixed, and after the flywheel is driven to rotate at a high speed, resistance from the expansion work stroke of the piston in the rotation of the crankshaft is overcome based on the large gravity of the flywheel, so that the piston can keep running continuously.

Because the flywheel is always in high-speed operation in the operation of the diesel engine, the flywheel is a disc-shaped iron casting, the inertia potential energy in the rotation is very large, and the connecting part of the flywheel and the crankshaft is difficult to avoid abrasion to generate a gap based on the large torque between the flywheel and the crankshaft and the accompanying impact load, and a small amount of gap can cause obvious vibration to the rotation, so that the noise is increased steeply, the abrasion is intensified, the energy is obviously lost, and the working capacity of the machine is reduced.

Disclosure of Invention

An object of the utility model is to provide a diesel engine is with low noise shock attenuation flywheel, it has improved with the inseparable degree of bent axle complex, can reduce vibrations and noise in the operation.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

a low-noise damping flywheel for a diesel engine comprises a flywheel body and a fastening piece;

the fastener includes the axle sleeve portion with crankshaft key-type connection, the central authorities of flywheel body are equipped with the circular port of grafting complex with axle sleeve portion, the outer end of axle sleeve portion is equipped with rather than integrated into one piece's location portion, the week side annular distribution of location portion has a plurality of outside bellied extensions, be equipped with on the extension rather than screw-thread fit's heterotypic bolt, heterotypic bolt is equally with flywheel body threaded connection.

The special-shaped bolt comprises a nut, a first screw rod and a second screw rod,

the flywheel comprises an extension part, a flywheel body and a second screw rod, wherein the extension part is provided with an adjusting screw hole in threaded connection with the first screw rod, the flywheel body is provided with a positioning screw hole in threaded connection with the second screw rod, the outer side end face of the flywheel body is provided with a conical groove coaxial with the positioning screw hole, a chock block is fixed at the joint of the first screw rod and the second screw rod, and the chock block is a truncated cone-shaped rubber block adaptive to the conical groove.

Circular groove structures are respectively arranged on the circular end surfaces on the two sides of the flywheel body.

The one end opening part of circular port is equipped with outside bellied bulge loop seat, the other end opening part of circular port is equipped with the circular recess coaxial with the circular port, the one end that axle sleeve portion is connected with location portion is equipped with the boss, the diameter of boss suits with the internal diameter of circular recess.

Be equipped with first looped pad and second looped pad between fastener and the flywheel body, the external diameter of first looped pad is corresponding with the internal diameter of circular recess, the internal diameter of first looped pad is corresponding with the internal diameter of circular recess, first looped pad is used for filling up between boss and circular recess tank bottom, the internal diameter of second looped pad suits with the diameter of boss, the second looped pad cover is outside at the boss for fill up between location portion inboard terminal surface and this external terminal surface of flywheel.

The shaft sleeve part is provided with a shaft hole along the central penetration of the length direction of the shaft sleeve part, and the inner wall of the shaft hole is provided with a key groove.

Be equipped with rather than integrated into one piece's band pulley spare on the outside terminal surface of fastener, be equipped with the trough of belt on the periphery of band pulley spare, band pulley spare has from outside to inside in proper order the wheel wall of bodiness.

Contrast prior art, the beneficial effects of the utility model reside in that:

by using the fastening piece to be respectively fixed with the flywheel body and the crankshaft, a better tight fixing effect is obtained. The abrasion in operation is caused to occur on the fastening piece, the loosening problem can be improved by replacing or adjusting the fastening piece, and therefore a high fastening and connecting effect is kept through a low-cost and easy-to-operate operation and maintenance means. The problems of rotation vibration and noise caused by abrasion looseness are avoided.

Drawings

Fig. 1 is a schematic view of embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of the internal structure of embodiment 1 of the present invention.

Fig. 3 is a schematic diagram of an assembly splitting lateral surface of embodiment 1 of the present invention.

Fig. 4 is a schematic diagram of a split inner side surface of an assembly according to embodiment 1 of the present invention.

Fig. 5 is a schematic view of embodiment 2 of the present invention.

Fig. 6 is a schematic view of the internal structure of embodiment 2 of the present invention.

Reference numerals shown in the drawings:

1. a flywheel body; 2. a circular hole; 3. a collar seat; 4. a circular groove; 5. a tapered slot; 6. positioning the screw hole; 7. a boss portion; 8. a positioning part; 9. a boss; 10. an extension portion; 11. adjusting the screw hole; 12. a special-shaped bolt; 13. a nut; 14. a first screw; 15. a second screw; 16. a chock block; 17. a rubber gasket; 18. a first annular pad; 19. a second annular pad; 20. a pulley member; 21. an inclined surface.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.

The instruments, reagents, materials and the like used in the following examples are conventional instruments, reagents, materials and the like in the prior art and are commercially available in a normal manner unless otherwise specified. Unless otherwise specified, the experimental methods, detection methods, and the like described in the following examples are conventional experimental methods, detection methods, and the like in the prior art.

Example 1: low-noise damping flywheel for diesel engine

Comprises a flywheel body 1 and a fastener;

in this design, adopt fastener flywheel assembly, and the structure that fastener and bent axle assembled specifically as follows:

the flywheel body 1 is of a disc-shaped structure, the flywheel body 1 adopts a casting structure with more edge counterweights for obtaining larger inertia energy, and specifically, circular groove structures are respectively arranged on the circular end surfaces of two sides of the flywheel body 1, so that the edge of the flywheel body 1 is protruded, and the counterweights are edged.

The circular recess of flywheel body 1 is equipped with circular port 2 placed in the middle, circular port 2 runs through flywheel body 1 for run through bent axle and fastener.

The one end opening part of circular port 2 is equipped with outside bellied bulge convex ring seat 3 for better with the shaft shoulder location of bent axle, be located the one side that is close to the diesel engine when the assembly. The other end opening part of circular port 2 is equipped with circular recess 4 coaxial with circular port 2, circular recess 4 obtains the concave station at its notch based on its structure, can realize the cooperation of second grade shock attenuation with the fastener, when reducing 1 central authorities' materials of flywheel body, lets the fastener obtain reinforced structure in this position.

The fastener comprises a boss portion 7 and a locating portion 8,

the shaft sleeve part 7 is of a cylindrical structure, the shaft sleeve part 7 penetrates through the shaft hole along the length direction of the shaft sleeve part, a key groove is formed in the inner wall of the shaft hole, the fixing with a crankshaft is achieved conveniently through key connection, the shaft sleeve part 7 is used for being inserted into the circular hole 2, the insertion assembly of the flywheel body 1 is achieved, and the diameter of the shaft sleeve part 7 is matched with the inner diameter of the circular hole 2.

The positioning part 8 is of an annular structure and is fixedly connected to the outer end of the shaft sleeve part 7, and the positioning part and the shaft sleeve part are integrally formed iron castings.

The boss 9 is arranged at one end of the shaft sleeve part 7 connected with the positioning part 8, the diameter of the boss 9 is matched with the inner diameter of the circular groove 4, and the joint of the shaft sleeve part 7 and the positioning part 8 is reinforced through the structure of the boss 9

Be equipped with first ring gasket 18 and second ring gasket 19 between fastener and the flywheel body 1, be the rubber material, first ring gasket 18 is used for filling up between boss 9 and 4 tank bottoms of circular slot, the external diameter of first ring gasket 18 is corresponding with the internal diameter of circular slot 4, the internal diameter of first ring gasket 18 is corresponding with the internal diameter of circular hole 2, through the cover in 7 outsides of axle sleeve portion and lie in circular slot 4, obtains the shock attenuation of fastener and flywheel body 1 and strengthens the fastening effect, the internal diameter of second ring gasket 19 suits with the diameter of boss 9, second ring gasket 19 covers at the boss 9 outsidely for fill up between 8 inboard terminal surfaces in location portion and flywheel body 1 outside terminal surface. The two cooperate to realize the second grade shock attenuation effect to oppress deformation and let the installation of fastener and flywheel body 1 more firm based on rubber. And wear in rotation is avoided.

The periphery of the positioning portion 8 is provided with three extending portions 10, the extending portions 10 are provided with adjusting screw holes 11 in a penetrating mode, special-shaped bolts 12 matched with the adjusting screw holes 11 in a threaded mode are arranged in the adjusting screw holes 11, and each special-shaped bolt 12 comprises a nut 13, a first screw rod 14 and a second screw rod 15.

The first screw 14 is in threaded connection with the adjusting screw hole 11, a chock 16 is fixed at the joint of the first screw 14 and the second screw 15, the chock 16 is a rubber block, the outer end of the first screw 14 is fixedly connected with the nut 13, the chock 16 is in a circular truncated cone shape, so that an inclined plane 21 is formed on the side wall of the chock, three conical grooves 5 are formed in the positions, corresponding to the adjusting screw holes 11, of the flywheel body 1, positioning screw holes 6 penetrating through the flywheel body 1 are formed in the bottoms of the conical grooves 5, the positioning screw holes 6 are in threaded connection with the second screw 15, the circumferential curved surfaces of the chock 16 are matched with the circumferential curved surfaces of the conical grooves 5 in a matching mode, and the peripheral surface of the chock 16 can be extruded on the wall of the conical groove 5 by inserting the chock 16 into the conical groove 5.

Based on above-mentioned structure, when using, special-shaped bolt is earlier through

first screw rod

14 and 10 threaded connection of extension, rethread

second screw rod

15 and 6 threaded connection realization of positioning screw are fixed, realize closely cooperating with bell jar 5 through chock 16 simultaneously, make the cooperation of special-shaped bolt 12 and flywheel spare seamless, and the flexible deformable contact of rubber can reduce joint wear, when operation a period, when taking place not hard up, can fasten special-shaped bolt 12 and make the plug member further fill in to bell jar 5, thereby resume closely cooperating the effect.

A plurality of rubber gaskets 17 can be matched on the special-shaped bolt 12, so that the shock absorption and fastening effects are improved. The contact between the profiled bolt 12 and other components is free of gaps.

Through above-mentioned structure, use the fastener and the fixed back of bent axle, realize closely fixed of fastener and flywheel body 1 through heterotypic bolt 12 to when the key-type connection takes place wearing and tearing, can realize maintaining through changing this less part of fastener, when reducing fortune dimension cost, can also reply and guarantee the precision of being connected with the bent axle. Meanwhile, the fastening piece and the flywheel body 1 are fixed in the circumferential direction through three points, and are tightly plugged and fastened through the plug piece, the fastening is reliable and seamless, the flywheel and the crankshaft are firmly synchronized after being rotated by combining the fastening piece and the flywheel body, and therefore the problems of vibration and noise caused by gaps or looseness are solved.

In addition, when the deformation, abrasion, looseness, etc. inevitably occur and regular maintenance is required, the fastening effect of the fixing can be easily restored by tightening the profile bolt 12 based on the structure of the chock 16.

Example 2: low-noise damping flywheel for diesel engine

Comprises a flywheel body 1 and a fastener; the whole structure is basically the same as that of the embodiment 1, and the difference between the two is that the fastener is further designed according to different models of diesel engines as follows:

and a belt wheel piece 20 which is integrally formed with the fastening piece is arranged on the end face of the outer side of the fastening piece, and a belt groove is arranged on the periphery of the belt wheel piece 20 and is used for being matched with a belt of a diesel engine to drive the belt wheel. Pulley 20 and fastener integrated into one piece reduce the error and the gap of assembly, can realize the general to the polytypic diesel engine, the inner circle of pulley 20 is inclined plane 21 for the outer end wall is thin, and inner wall thickness, because the arm of force of the effect of belt on different positions is different, so from outer to inner wheel wall of bodiness in proper order can improve intensity, reduces the pulling power of different positions belt. The operation stability is improved.

Claims

1. A low-noise damping flywheel for a diesel engine is characterized by comprising a flywheel body and a fastener; the fastener includes the boss portion with crankshaft key-type connection, the central authorities of flywheel body are equipped with the complex circular port of pegging graft with boss portion, the outer end of boss portion is equipped with rather than integrated into one piece's location portion, the week side annular distribution of location portion has a plurality of outside bellied extensions, be equipped with on the extension rather than screw-thread fit's heterotypic bolt, heterotypic bolt is equally with flywheel body threaded connection.

2. The flywheel of claim 1, wherein the shaped bolt comprises a nut, a first screw, and a second screw,

3. The flywheel of claim 1, wherein the flywheel body has circular grooves on its two circular end surfaces.

4. The flywheel of claim 1, wherein a protruding ring seat protruding outward is provided at an opening at one end of the circular hole, a circular groove coaxial with the circular hole is provided at an opening at the other end of the circular hole, a boss is provided at an end of the boss portion connected to the positioning portion, and a diameter of the boss is adapted to an inner diameter of the circular groove.

5. The flywheel of claim 4, wherein a first annular pad and a second annular pad are disposed between the fastening member and the flywheel body, the first annular pad has an outer diameter corresponding to an inner diameter of the circular groove, the first annular pad has an inner diameter corresponding to an inner diameter of the circular hole, the first annular pad is disposed between the boss and the bottom of the circular groove, the second annular pad has an inner diameter corresponding to a diameter of the boss, and the second annular pad is disposed outside the boss and is disposed between an inner end surface of the positioning portion and an outer end surface of the flywheel body.

6. A low noise and vibration absorbing flywheel for diesel engine as set forth in claim 1 wherein said boss portion has a shaft hole formed through it centrally along the length thereof, and a key groove is formed on the inner wall of said shaft hole.

7. A low noise and shock absorbing flywheel for diesel engine as set forth in claim 1, wherein a pulley member is integrally formed with the fastening member at the outer end surface thereof, a belt groove is formed in the outer periphery of said pulley member, and said pulley member has a wall which is thickened from the outside to the inside in this order.