CN216009224U

CN216009224U - Motorcycle engine crankshaft with high shock resistance

Info

Publication number: CN216009224U
Application number: CN202122530593.0U
Authority: CN
Inventors: 宋加良
Original assignee: Qingdao Jiadesheng Machinery Technology Co ltd
Current assignee: Qingdao Jiadesheng Machinery Technology Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-03-11
Anticipated expiration: 2031-10-20

Abstract

The utility model relates to an engine crankshaft technical field discloses a motorcycle engine crankshaft with high shock resistance, include: the crankshaft, one end of the crankshaft is connected with a crank, the other end of the crank is connected with a balance weight, the balance weight and the other end of the crankshaft are both connected with a rotating shaft, the crankshaft, the crank, the balance weight and the rotating shaft are arranged alternately, a fixed plate is fixed at one end, away from the balance weight, of the rotating shaft, a flywheel is arranged on the outer ring of the fixed plate, and a fixed groove is formed in the joint of the flywheel and the fixed plate; and the reinforcing rib is fixed inside the crank. This motorcycle engine crankshaft with high shock resistance is provided with fixed plate and fixed slot, and it is used for convenient carries out the dismouting to flywheel and crankshaft part and maintains, can adjust the specification of flywheel according to the quantity and the output power size of engine stroke, makes the engine operation more steady, and reduces later maintenance and cost of overhaul.

Description

Motorcycle engine crankshaft with high shock resistance

Technical Field

The utility model relates to an engine crankshaft technical field specifically is a motorcycle engine bent axle with high shock resistance.

Background

The crankshaft is a general accessory in an engine transmission structure, can convert power transmitted by a connecting rod into torque through rotation, and outputs the torque to other accessories in an engine transmission system through the rotation of the crankshaft.

A fixed flywheel is usually adopted in the use of a motorcycle engine crankshaft with high impact resistance in the market, but the flywheel is positioned on one side of the engine due to an external design of the motorcycle engine and is easily damaged due to collision and the like, the integrated structure enables the overhaul and replacement cost to be higher, and the disassembly and the assembly are troublesome, so that the motorcycle engine crankshaft with high impact resistance is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motorcycle engine bent axle with high shock resistance to solve the motorcycle engine bent axle with high shock resistance on the market that proposes in the above-mentioned background art and adopt fixed flywheel in use usually, but motorcycle engine is because external design, and the flywheel is in engine one side, and is impaired because of reasons such as collision easily, and the structure of integral type makes to overhaul with the replacement cost higher, and the troublesome problem of dismouting.

In order to achieve the above object, the utility model provides a following technical scheme: a motorcycle engine crankshaft having high impact resistance, comprising:

the crankshaft, one end of the crankshaft is connected with a crank, the other end of the crank is connected with a balance weight, the balance weight and the other end of the crankshaft are both connected with a rotating shaft, the crankshaft, the crank, the balance weight and the rotating shaft are arranged alternately, a fixed plate is fixed at one end, away from the balance weight, of the rotating shaft, a flywheel is arranged on the outer ring of the fixed plate, and a fixed groove is formed in the joint of the flywheel and the fixed plate;

the reinforcing rib is fixed inside the crank, an oil storage cavity is arranged at the gap between the crank and the reinforcing rib, and an oil hole is formed in the outer wall of the crank.

Preferably, the crankshaft forms a rotating structure through the crank and between the balance weight and the rotating shaft, the balance weight and the crankshaft are symmetrically arranged about a central axis of the crank, the flywheel forms a rotating structure through the fixing plate and the fixing groove and the rotating shaft, and meanwhile the flywheel is in threaded connection with the fixing plate.

Preferably, the oil storage chamber is communicated with the oil hole through the crank, and the reinforcing rib penetrates through the crank.

Preferably, the rotating shaft is further provided with:

the timing gear is connected to the outer portion of one end, far away from the crankshaft, of the rotating shaft, a belt wheel is fixed to the other end of the timing gear, a belt groove is formed in the outer wall of the belt wheel, a clamping groove is formed in the joint of the timing gear and the rotating shaft, and clamping blocks are fixed to four corners of the joint of the rotating shaft and the timing gear.

Preferably, the rotating shaft forms a clamping structure with the timing gear through the clamping block and the clamping groove, the rotating shaft is in threaded connection with the timing gear, and a rotating structure is formed between the timing gear and the belt wheel.

Preferably, the crank is further provided with:

and a graphite sheet fitted to an outer wall of the crank.

Preferably, the graphite sheet is arranged symmetrically about the central axis of the crank, and the graphite sheet is matched with the shape structure of the crank.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this motorcycle engine crankshaft with high shock resistance is provided with fixed plate and fixed slot, and it is used for convenient carries out the dismouting to flywheel and crankshaft part and maintains, can adjust the specification of flywheel according to the quantity and the output power size of engine stroke, makes the engine operation more steady, and reduces later maintenance and cost of overhaul.

2. The reinforcing ribs are used for enhancing the structural strength of the crank, so that the integral shock resistance of the crank is improved, the capability of resisting external shock when the crank rotates is enhanced, the probability of fracture and breakage when the crank is impacted is reduced, and the use safety is improved; the graphite flake of setting is as supplementary lubrication structure, can further improve the lubricated degree of each part junction, and the back of finishing is used to the lubricated liquid in the oil storage chamber, can reduce the friction loss as buffer structure, reduces the wearing and tearing of bent axle.

3. After the fixture block and the clamping groove are clamped, the power of the rotating shaft can be stably transmitted to the timing gear, so that the power is transmitted to the belt wheel, the periodic error of the rotation of the crankshaft is small, and the rotating shaft and the timing gear are connected in a threaded manner, convenient to disassemble and assemble and easy to maintain.

Drawings

FIG. 1 is a schematic view of the front perspective structure of the present invention;

FIG. 2 is a schematic view of the three-dimensional structure of the fixing plate and the flywheel of the present invention in a disassembled state;

FIG. 3 is a schematic view of a cross-sectional three-dimensional structure of the crank portion of the present invention;

fig. 4 is the utility model discloses three-dimensional structure schematic diagram is disassembled with timing gear junction to the pivot.

In the figure: 1. a crankshaft; 2. a crank; 3. a counterweight; 4. a rotating shaft; 5. a fixing plate; 6. a flywheel; 7. a timing gear; 8. a pulley; 9. a belt groove is formed; 10. a graphite sheet; 11. an oil hole; 12. fixing grooves; 13. reinforcing ribs; 14. an oil storage chamber; 15. a card slot; 16. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a motorcycle engine crankshaft having high impact resistance, comprising: the crankshaft 1, one end of the crankshaft 1 connects with the crank 2, another end of the crank 2 connects with the counterweight 3, and the counterweight 3 and crankshaft 1 are set up symmetrically about the axial line position of the crank 2, the counterweight 3 is used for balancing the centrifugal force and moment produced by axis of rotation 4 and crank 2, make the crankshaft 1 operate steadily and reduce the load born by axis of rotation 4; the other ends of the balance weight 3 and the crankshaft 1 are connected with a rotating shaft 4, the crankshaft 1 forms a rotating structure through a crank 2 and between the balance weight 3 and the rotating shaft 4, the crankshaft 1, the crank 2, the balance weight 3 and the rotating shaft 4 are arranged alternately, one end, far away from the balance weight 3, of the rotating shaft 4 is fixed with a fixing plate 5, a flywheel 6 is arranged on the outer portion of the fixing plate 5 in a surrounding mode, the flywheel 6 is used for storing energy and inertia outside an engine power stroke, and the compression and exhaust processes are completed through the stored energy; a fixed groove 12 is formed at the joint of the flywheel 6 and the fixed plate 5, the flywheel 6 forms a rotating structure with the rotating shaft 4 through the fixed plate 5 and the fixed groove 12, and the flywheel 6 is in threaded connection with the fixed plate 5; the fixed plate 5 and the fixed slot 12 that set up are used for convenient carry out the dismouting maintenance to flywheel 6 and crankshaft 1 part, can adjust the specification of flywheel 6 according to the quantity and the output power size of engine stroke, make the engine operation more steady, and reduce later maintenance and cost of overhaul.

Referring to fig. 3, a crankshaft of a motorcycle engine having high impact resistance includes: a rib 13 fixed inside the crank 2, the rib 13 penetrating inside the crank 2; the reinforcing ribs 13 are used for enhancing the structural strength of the crank 2, so that the whole impact resistance of the crank 1 is improved, the external impact resistance of the crank 1 is enhanced when the crank rotates, the probability of fracture and breakage when the crank is impacted is reduced, and the use safety is improved; an oil storage cavity 14 is arranged at the gap between the crank 2 and the reinforcing rib 13, an oil hole 11 is formed in the outer wall of the crank 2, and the oil storage cavity 14 forms a communication structure through the crank 2 and the oil hole 11; the arranged oil hole 11 can slowly release lubricating liquid stored in the oil storage cavity 14 through the oil hole 11 to lubricate the crankshaft 1, the crank 2 and the balance weight 3, so that the friction resistance at the joint of each part is reduced, and the working efficiency of the engine is improved; the graphite sheet 10 is embedded on the outer wall of the crank 2, the graphite sheet 10 is symmetrically arranged relative to the central axis of the crank 2, and the graphite sheet 10 is matched with the appearance structure of the crank 2; the graphite flake 10 that sets up is as supplementary lubrication structure, can further improve the lubricated degree of each part junction, and the lubricated liquid in oil storage cavity 14 back of finishing using, can reduce the friction loss as buffer structure, reduces bent axle 1's wearing and tearing.

Referring to fig. 4, a crankshaft of a motorcycle engine having high impact resistance includes: the timing gear 7 is connected to the outer part of one end, far away from the crankshaft 1, of the rotating shaft 4, the rotating shaft 4 is in threaded connection with the timing gear 7, a belt wheel 8 is fixed to the other end of the timing gear 7, a rotating structure is formed between the timing gear 7 and the belt wheel 8, the timing gear 7 is in toothed belt transmission, and the timing gear is simple in transmission structure, low in noise, stable in operation, high in transmission precision and good in synchronism; a belt groove 9 is formed in the outer wall of the belt wheel 8, a clamping groove 15 is formed in the joint of the timing gear 7 and the rotating shaft 4, clamping blocks 16 are fixed at four corners of the joint of the rotating shaft 4 and the timing gear 7 at one end, and the rotating shaft 4 and the timing gear 7 form a clamping structure through the clamping blocks 16 and the clamping groove 15; behind 16 and the clamping groove 15 block of fixture block that set up for 4's power can stably transmit to timing gear 7, thereby transmit to band pulley 8, make 1 pivoted periodic error of bent axle less, and threaded connection's 4 and 7 easy dismounting of timing gear, easy to maintain.

The working principle is as follows: for the motorcycle engine crankshaft with high impact resistance, firstly, a fixing plate 5 fixed on a rotating shaft 4 connected with the outer wall of a balancing weight 3 at one end is connected with a fixing groove 12 arranged on the inner side of a flywheel 6 and is fixed by a bolt, the flywheel 6 mainly functions to store energy and inertia outside the power stroke of the engine, energy of engine compression and exhaust comes from the energy stored by the flywheel 6, the flywheel 6 which is tightly connected can stably drive the rotating shaft 4 to rotate, the inner side surface of the balancing weight 3 is connected with a crank 2, the other end of the crank 2 is connected with a crankshaft 1, the outer wall of the other end of the crankshaft 1 is also connected with a rotating shaft 4 and the like in sequence, four corners of the rotating shaft 4 connected on the outer wall of a far-end crankshaft 1 are fixed with clamping blocks 16, the clamping blocks 16 and the rotating shaft 4 are clamped and connected with clamping grooves 15 arranged on a timing gear 7 and are fixed by bolts, then, the outer wall of the outer side of the timing gear 7 is fixed with a belt wheel 8, the drive belt is established to the trough of belt 9 of seting up on band pulley 8, the partial kinetic energy that produces when making bent axle 1 do work can be transmitted through

band pulley

8, 2 inside strengthening ribs 13 that are used for improving 2 shock resistance of crank that are fixed with of crank at last, make 2 structural strength of crank promote, and 2 inside oil storage chamber 14 of having seted up of crank, can store partial lubricating fluid, this partial lubricating fluid releases through the oilhole 11 that 2 surfaces of crank were seted up, lubricate crank 2 and bent axle 1 and balanced weight 3, improve its and piston junction's lubricated degree, and the crank 2 outer wall inlays the dress and graphite flake 10 in addition, can make the lubricated degree of junction obtain further promotion, and after 14 oil in oil storage chamber consume finishes, can also regard as buffering usefulness, prevent the direct production of friction between 2 outer walls of crank and the piston.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A motorcycle engine crankshaft having high impact resistance, comprising:

the crankshaft (1), one end of the crankshaft (1) is connected with a crank (2), the other end of the crank (2) is connected with a balance weight (3), the balance weight (3) and the other end of the crankshaft (1) are connected with a rotating shaft (4), the crankshaft (1), the crank (2), the balance weight (3) and the rotating shaft (4) are arranged alternately, a fixing plate (5) is fixed at one end, far away from the balance weight (3), of the rotating shaft (4), a flywheel (6) is arranged on an outer ring of the fixing plate (5), and a fixing groove (12) is formed in the connecting position of the flywheel (6) and the fixing plate (5);

the reinforcing rib (13) is fixed in the crank (2), an oil storage cavity (14) is formed in a gap between the crank (2) and the reinforcing rib (13), and an oil hole (11) is formed in the outer wall of the crank (2).

2. A motorcycle engine crankshaft having high impact resistance according to claim 1, wherein: the crankshaft (1) is in a rotating structure through the crank (2) and the balance weight (3) and the rotating shaft (4), the balance weight (3) and the crankshaft (1) are symmetrically arranged about the central axis of the crank (2), the flywheel (6) is in a rotating structure through the fixing plate (5) and the fixing groove (12) and the rotating shaft (4), and meanwhile the flywheel (6) is in threaded connection with the fixing plate (5).

3. A motorcycle engine crankshaft having high impact resistance according to claim 1, wherein: the oil storage cavity (14) forms a communication structure between the crank (2) and the oil hole (11), and the reinforcing rib (13) penetrates through the inside of the crank (2).

4. A motorcycle engine crankshaft having high impact resistance according to claim 1, wherein: the rotating shaft (4) is also provided with:

the timing gear (7) is connected to the outer portion of one end, far away from the crankshaft (1), of the rotating shaft (4), a belt pulley (8) is fixed to the other end of the timing gear (7), a belt groove (9) is formed in the outer wall of the belt pulley (8), a clamping groove (15) is formed in the connecting portion of the timing gear (7) and the rotating shaft (4), and clamping blocks (16) are fixed to four corners of the connecting portion of the rotating shaft (4) and the timing gear (7).

5. A motorcycle engine crankshaft having high impact resistance according to claim 4, characterized in that: the rotating shaft (4) is in a clamping structure with the timing gear (7) through the clamping block (16) and the clamping groove (15), the rotating shaft (4) is in threaded connection with the timing gear (7), and a rotating structure is formed between the timing gear (7) and the belt wheel (8).

6. A motorcycle engine crankshaft having high impact resistance according to claim 1, wherein: the crank (2) is further provided with:

and a graphite sheet (10) fitted to the outer wall of the crank (2).

7. A motorcycle engine crankshaft having high impact resistance according to claim 6, characterized in that: graphite flake (10) are around the axis position symmetry setting of crank (2), and graphite flake (10) and the appearance structure phase-match of crank (2).