Wear-resistant aluminum alloy automobile connecting rod

Abstract

The utility model relates to the technical field of automobile connecting rods, and discloses a wear-resistant aluminum alloy automobile connecting rod which comprises a connecting rod body, the upper side of the connecting rod body is fixedly connected with a connecting rod large head, the lower side of the connecting rod body is fixedly connected with a connecting rod small head, and the upper side of the connecting rod large head is provided with a connecting rod cover. An anti-abrasion assembly is arranged on the inner side of the large connecting rod head and the inner side of the connecting rod cover, a first through hole is formed in the large connecting rod head, and a second through hole is formed in the small connecting rod head. The anti-abrasion assembly comprises protrusions, and the protrusions are fixedly connected to the inner walls of the connecting rod large head and the connecting rod cover. The protrusions on the inner walls of the connecting rod large head and the connecting rod cover increase friction force with a crankshaft and prevent relative sliding abrasion, the abrasion-resistant coatings are directly resistant to abrasion, the coatings in the shallow grooves can supplement the abraded abrasion-resistant coatings, self-repairing is achieved, the heat dissipation fins of the connecting rod body increase the heat dissipation area, the situation that the performance of the connecting rod is reduced due to high temperature is avoided, and the service life of the connecting rod is prolonged. And stable operation of the engine is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile connecting rod, especially to a wear -resisting aluminium alloy automobile connecting rod.

[0002] BACKGROUND

[0003] The automobile connecting rod is used for connecting the piston and the crankshaft and transmits the force received by the piston to the crankshaft, and converts the reciprocating motion of the piston into the rotary motion of the crankshaft.

[0004] According to the search, the Chinese patent publication No. CN214698753U discloses a wear-resistant aluminum alloy automobile connecting rod, which comprises a connecting rod body, a connecting rod cover and a connecting piece. The two sides of the connecting rod body are a connecting rod big head and a connecting rod small head. A first through hole on the connecting rod small head is used for connecting with a piston pin. The connecting rod big head and the connecting rod cover are fixed through the connecting piece. A second through hole formed after the connecting of the connecting rod big head and the connecting rod cover is used for connecting with a crankshaft. The inner wall of the second through hole formed by the connecting rod big head and the connecting rod cover is fixed with a wear-resistant coating. The above-mentioned automobile connecting rod can solve the problem that the connecting rod big head and the crankshaft will cause mutual wear during long-term transmission, leading to loose connection and affecting the use of the automobile connecting rod.

[0005] However, when facing complex stress and long-term friction, simply adding a coating to the contact surface has limited wear resistance, which cannot meet the requirements of modern automobile engines for high performance and long service life. In addition, due to the frequent relative movement of the connecting rod small head and the piston pin, good lubrication conditions are needed to reduce friction. The existing device lacks effective lubricating oil storage and delivery structure, which leads to rapid wear of this part. At the same time, a large amount of heat will be generated during engine operation. If the connecting rod cannot be cooled in time, the high temperature will reduce the performance of the aluminum alloy material, further aggravate the wear, and affect the strength and fatigue life of the connecting rod.

[0006] Therefore, a wear-resistant aluminum alloy automobile connecting rod is provided to solve the problems in the background art. SUMMARY

[0007] In order to make up for the above shortcomings, the utility model provides a kind of wear-resistant aluminium alloy automobile connecting rod, to improve the prior art in the face of complex stress and long-term friction, wear resistance is limited, it is difficult to meet the modern automobile engine on high performance and long life requirement, in the connecting rod small head and the connecting portion of piston pin, due to frequent relative movement, the existing device lacks effective lubricating oil storage and transport structure, leading to the part wear faster, simultaneously, engine works can produce a large amount of heat, too high temperature can make the performance of aluminium alloy material decline, affect the strength and fatigue life of connecting rod.

[0008] To realize the above object, the utility model provides the following technical scheme: a kind of wear-resistant aluminium alloy automobile connecting rod, including connecting rod body, the upper side of the connecting rod body is fixedly connected with connecting rod big head, the lower side of the connecting rod body is fixedly connected with connecting rod small head, the upper side of the connecting rod big head is provided with connecting rod cover, the inside of the connecting rod big head and connecting rod cover is provided with wear-preventing component, the inside of the connecting rod big head is provided with through hole one, the inside of the connecting rod small head is provided with through hole two;The wear-preventing component includes protrusion, the protrusion is fixedly connected on the inner wall of connecting rod big head and connecting rod cover, the inside of the connecting rod big head and connecting rod cover is provided with wear-resistant coating, the inner wall of the connecting rod big head and connecting rod cover is provided with shallow groove, the shallow groove is annularly distributed on the connecting rod big head and connecting rod cover.

[0009] Further, the inside of the connecting rod big head is provided with mouthguard, the inside of the connecting rod cover is provided with bolt, the outside of the bolt is provided with spring washer, nut is threadedly connected on the bolt.

[0010] Further, the inside of the connecting rod small head is provided with bushing, the bushing is arranged in the inside of through hole two, the inner wall of the connecting rod small head is provided with oil groove.

[0011] Further, the wear-resistant coating is arranged in the inside of through hole one.

[0012] Further, the bolt is threadedly connected in the inside of mouthguard.

[0013] Further, the heat dissipation fin is installed on the connecting rod body.

[0014] Further, the protrusion is attached to the outside of wear-resistant coating.

[0015] The utility model has the following beneficial effects:

[0016] 1, in the utility model, the protrusion of the inner wall of connecting rod big head and connecting rod cover increases the friction with crankshaft, prevents relative sliding wear, wear-resistant coating directly resists wear, coating in shallow groove can supplement wear-resistant coating of wear, realizes self-repair, the heat dissipation fin of connecting rod body increases heat dissipation area, avoids that connecting rod is because high temperature performance declines, guarantees engine stable operation.

[0017] 2、 the utility model discloses, connecting rod small head is linked with piston pin through through -hole no. 2, and piston movement is delivered, and the internal bushing and oil tank cooperate, reduce the friction of piston pin and connecting rod small head, guarantee lubrication, and connecting rod big head is in the crank connecting rod journal through through -hole no. 1, and connecting rod cover is connected with connecting rod big head through bolt, toothed sleeve connection, spring washer prevents loosening, and it is ensured that the connection is stable, and reliable power transmission. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A kind of wear-resistant aluminum alloy automobile connecting rod of the utility model is provided with a perspective view;

[0019] Figure 2 A kind of wear-resistant aluminum alloy automobile connecting rod of the utility model is provided with a wear-preventing assembly structure schematic view;

[0020] Figure 3 A kind of wear-resistant aluminum alloy automobile connecting rod of the utility model is provided with a partial structure schematic view;

[0021] Figure 4 A kind of wear-resistant aluminum alloy automobile connecting rod of the utility model is provided with a spring washer structure schematic view.

[0022] LEGEND:

[0023] 1, connecting rod body;2, connecting rod small head;3, connecting rod big head;4, bolt;5, wear-preventing assembly;51, protrusion;52, shallow groove;53, wear-resistant coating;6, spring washer;7, toothed sleeve;8, bushing;9, through -hole no. 1;10, through -hole no. 2;11, connecting rod cover;12, oil tank;13, heat dissipation fin;14, nut. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] REFERENCE Figures 1-4The utility model provides a kind of embodiment: a kind of wear-resistant aluminum alloy automobile connecting rod, including connecting rod body 1, the upper side of connecting rod body 1 is fixedly connected with connecting rod big end 3, the lower side of connecting rod body 1 is fixedly connected with connecting rod small end 2, the inside of connecting rod big end 3 is provided with mouthguard 7, the inside of connecting rod cover 11 is provided with bolt 4, the outside of bolt 4 is provided with spring washer 6, nut 14 is threadedly connected on bolt 4, bolt 4 is threadedly connected in the inside of mouthguard 7, the upper side of connecting rod big end 3 is provided with connecting rod cover 11, the inside of connecting rod big end 3 and connecting rod cover 11 is provided with anti-abrasion component 5, through hole one 9 is opened in the inside of connecting rod big end 3, wear-resistant coating 53 is arranged in the inside of through hole one 9, through hole two 10 is opened in the inside of connecting rod small end 2, the inside of connecting rod small end 2 is provided with bushing 8, bushing 8 is arranged in the inside of through hole two 10, oil groove 12 is opened in the inner wall of connecting rod small end 2;Anti-abrasion component 5 includes protrusion 51, protrusion 51 is fixedly connected on the inner wall of connecting rod big end 3 and connecting rod cover 11, protrusion 51 is attached with the outside of wear-resistant coating 53, the inside of connecting rod big end 3 and connecting rod cover 11 is provided with wear-resistant coating 53, the inner wall of connecting rod big end 3 and connecting rod cover 11 is opened with shallow groove 52, shallow groove 52 is annularly distributed on connecting rod big end 3 and connecting rod cover 11, heat dissipation fin 13 is installed on connecting rod body 1;

[0026] Connecting rod small end 2 is connected with piston pin through the inside through hole two 10, and the reciprocating linear motion of piston is transmitted to connecting rod through the connection of the two, and bushing 8 plays a buffering and wear-reducing role between piston pin and connecting rod small end 2, reduces the wear caused by friction, oil groove 12 is opened in the inner wall of connecting rod small end 2, can store lubricating oil, in the movement process of piston pin, lubricating oil is taken out from oil groove 12, and oil film is formed between piston pin and bushing 8, so as to guarantee lubricating effect, connecting rod big end 3 is connected with crankshaft, bolt 4 passes through the inside of connecting rod cover 11 and is threadedly connected in the mouthguard 7 in the inside of connecting rod big end 3, and spring washer 6 can prevent the vibration generated when engine operates from loosening bolt 4, so as to ensure that connecting rod big end 3 and connecting rod cover 11 are fixed, protrusion 51 on the inner wall of connecting rod big end 3 and connecting rod cover 11 can increase the friction force of contact surface with crankshaft, effectively prevent the wear caused by relative sliding, wear-resistant coating 53 is directly contacted with crankshaft, resists the friction generated when crankshaft rotates, reduces wear, prolongs the service life of connecting rod and crankshaft, with long-time work operation, wear-resistant coating 53 will be gradually consumed, when some parts of wear-resistant coating 53 appear thinning due to wear, the coating in shallow groove 52 will gradually be released from shallow groove 52 and supplemented to the wear parts, since a large amount of heat is generated when engine works, heat dissipation fin 13 installed on connecting rod body 1 increases the heat dissipation area, speeds up heat dissipation, avoids that the material performance is reduced due to that the temperature of connecting rod is too high.

[0027] Working principle: when using the device, the small end of the connecting rod 2 passes through the through hole 10 through the internal bolt 4, is connected in the tooth socket 7 in the big end of the connecting rod 3 by screwing, the spring washer 6 is prevented from loosening, the stable connection with other connecting pieces is ensured, the big end of the connecting rod 3 and the inner side of the connecting rod cover 11 have the protrusion 51, the wear-resistant coating 53 is installed on the big end of the connecting rod 3 and the connecting rod cover 11, the wear-resistant coating 53 and the protrusion 51 are attached, the friction can be increased, the wear-resistant coating 53 directly resists friction, the service life of components is prolonged, at the same time, the coating is increased in the shallow groove 52, the coating in the shallow groove 52 can gradually supplement the wear part, the bushing 8 of the small end of the connecting rod 2 reduces the friction with the piston pin, the inner wall oil groove 12 stores and transports lubricating oil, the heat dissipation fin 13 on the connecting rod body 1 is used for heat dissipation, and the normal working temperature is maintained.

[0028] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model have been described, and do not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement is carried out to part technical features, any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A wear-resistant aluminum alloy automotive connecting rod, comprising a connecting rod body (1), characterized in that: The upper side of the connecting rod body (1) is fixedly connected to the connecting rod big end (3), the lower side of the connecting rod body (1) is fixedly connected to the connecting rod small end (2), the upper side of the connecting rod big end (3) is provided with a connecting rod cap (11), the inner side of the connecting rod big end (3) and the connecting rod cap (11) is provided with an anti-wear component (5), the inside of the connecting rod big end (3) is provided with a through hole one (9), and the inside of the connecting rod small end (2) is provided with a through hole two (10). The wear-resistant component (5) includes a protrusion (51), which is fixedly connected to the inner wall of the connecting rod big end (3) and the connecting rod cap (11). The inner side of the connecting rod big end (3) and the connecting rod cap (11) is provided with a wear-resistant coating (53). The inner wall of the connecting rod big end (3) and the connecting rod cap (11) is provided with a shallow groove (52), which is distributed in a ring on the connecting rod big end (3) and the connecting rod cap (11).

2. The wear-resistant aluminum alloy automotive connecting rod according to claim 1, characterized in that: The connecting rod big end (3) is provided with a toothed sleeve (7), the connecting rod cover (11) is provided with a bolt (4), the bolt (4) is provided with a spring washer (6) on the outside, and a nut (14) is threaded onto the bolt (4).

3. The wear-resistant aluminum alloy automotive connecting rod according to claim 1, characterized in that: A bushing (8) is provided on the inner side of the small end of the connecting rod (2). The bushing (8) is located inside the through hole (10). An oil groove (12) is provided on the inner wall of the small end of the connecting rod (2).

4. The wear-resistant aluminum alloy automotive connecting rod according to claim 1, characterized in that: The wear-resistant coating (53) is disposed inside the through hole (9).

5. A wear-resistant aluminum alloy automotive connecting rod according to claim 2, characterized in that: The bolt (4) is threaded inside the dental sleeve (7).

6. The wear-resistant aluminum alloy automotive connecting rod according to claim 1, characterized in that: The connecting rod body (1) is equipped with heat dissipation fins (13).

7. The wear-resistant aluminum alloy automotive connecting rod according to claim 1, characterized in that: The protrusion (51) is in contact with the outer side of the wear-resistant coating (53).

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