Crankshaft for automobile engine

Abstract

The utility model relates to the technical field of automobile crankshafts, and discloses a crankshaft for an automobile engine, which comprises a main shaft, the main shaft is a component mainly connected with other structures, the outer side of the main shaft is fixedly connected with eight weight stacks, and the weight stacks are designed to carry out weight balancing on the crankshaft. The close ends of the two weight stacks are fixedly connected with a connecting rod shaft, the connecting rod shaft is designed to facilitate connection of the crankshaft and a connecting rod, the right side of the main shaft is fixedly connected with a placement shaft, the placement shaft is designed to facilitate placement of the crankshaft into an engine, and the left side of the main shaft is fixedly connected with a driving assembly used for driving the crankshaft. According to the utility model, the lubricating groove I is matched with the lubricating groove II and the lubricating hole, so that lubricating oil can conveniently enter the connecting part of the crankshaft and the connecting rod from the gap and can move in the connecting part to uniformly lubricate, the flow of detaching the connecting rod and the crankshaft is avoided, the maintenance complexity is reduced, the maintenance time is shortened, and the maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile crankshaft, especially a crankshaft for automobile engine. BACKGROUND

[0002] The crankshaft of an automobile engine is a key mechanical component responsible for converting the linear motion of pistons into rotational motion to drive the wheels of the car.

[0003] In the prior art, when adding lubricating oil to the connecting part of the crankshaft and connecting rod in some crankshafts for automobile engines, the connecting rod needs to be disassembled from the crankshaft, and then the connecting part of the connecting rod and the crankshaft can be smeared with lubricating oil. Disassembling the connecting rod and the crankshaft requires professional tools and techniques, increasing the complexity of maintenance, requiring longer maintenance time, and reducing maintenance efficiency. Therefore, a crankshaft for automobile engine is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] To make up for the above shortcomings, the utility model provides a crankshaft for automobile engine, aiming at improving the problem that in the prior art, when adding lubricating oil to the connecting part of the crankshaft and connecting rod in some crankshafts for automobile engines, the connecting rod needs to be disassembled from the crankshaft first, and then the connecting part of the connecting rod and the crankshaft can be smeared with lubricating oil. Disassembling requires professional tools and techniques, increasing the complexity of maintenance, requiring longer maintenance time, and reducing maintenance efficiency.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A crankshaft for automobile engine, comprising a main shaft, which is a main component for connecting other structures, eight counterweights are fixedly connected to the outer side of the main shaft, the counterweights are designed to counterbalance the crankshaft, a connecting rod shaft is fixedly connected to the proximal end of two counterweights, the connecting rod shaft is designed to facilitate the connection of the crankshaft and the connecting rod, a placement shaft is fixedly connected to the right side of the main shaft, the placement shaft is designed to facilitate the placement of the crankshaft inside the engine, a driving assembly for driving the crankshaft is fixedly connected to the left side of the main shaft, a lubricating groove one is formed in the outer side of each of the four connecting rod shafts, the lubricating groove one is designed to cooperate with the lubricating groove two and the lubricating hole, facilitating the movement of lubricating oil at the connecting part of the crankshaft and the connecting rod, and uniformly lubricating the connecting part, a lubricating groove two is formed in the outer side of each of the four connecting rod shafts, a lubricating hole is formed in the inner side of each of the four connecting rod shafts, and a protection assembly for protecting the connecting rod shaft is arranged on the outer side of each connecting rod shaft.

[0007] Further description of the above technical scheme:

[0008] The driving assembly comprises a driving shaft and a driving gear, the right side of the driving shaft is fixedly connected to the left side of the main shaft, the driving shaft is designed to drive the flywheel output end and the driving gear to rotate under the driving of the main shaft, and the inside of the driving gear is fixedly connected to the outside of the driving shaft.

[0009] As a further description of the above technical solutions:

[0010] The outside of the driving shaft is fixedly connected with the flywheel output end, the flywheel output end is designed to facilitate stable power output, a plurality of inertia reduction holes are formed in the inside of the flywheel output end, the inertia reduction holes are arranged on the flywheel output end, the rotational inertia of the flywheel output end can be changed, and the flywheel output end is more flexible during acceleration and deceleration, which has a positive effect on improving the power response of the engine and improving the driving experience.

[0011] As a further description of the above technical solutions:

[0012] The outside of the driving gear is provided with two weight reduction grooves, the weight reduction grooves are designed to reduce the weight of the driving gear, and the driving gear is used to drive the external driven gear under the driving of the rotating driving shaft.

[0013] As a further description of the above technical solutions:

[0014] The shape of the flywheel output end is disc-shaped, the disc-shaped flywheel output end can operate more stably, the inertia reduction holes are used to change the rotational inertia of the flywheel output end, and the flywheel output end is more flexible during acceleration and deceleration, which has a positive effect on improving the power response of the engine and improving the driving experience.

[0015] As a further description of the above technical solutions:

[0016] The protection assembly comprises two protection sleeves and a plurality of lubricating seams, the two protection sleeves are arranged on the outside of the connecting rod shaft, the two protection sleeves are matched with each other to wrap and protect the connecting rod shaft, the whole protection assembly is made of wear-resistant chromium-molybdenum steel, the steel contains chromium and molybdenum elements, and the hardness and wear resistance can be improved, and the plurality of lubricating seams are arranged in the inside of the protection sleeve, the lubricating seams are used to facilitate the entry of lubricating oil into the crankshaft, and the crankshaft and the connecting rod work better.

[0017] As a further description of the above technical solutions:

[0018] The protection sleeve is used to protect the connecting rod shaft and reduce wear, and the whole protection assembly is made of wear-resistant chromium-molybdenum steel, the steel contains chromium and molybdenum elements, and the hardness and wear resistance can be improved, and the lubricating seams are used to facilitate the entry of lubricating oil into the crankshaft, and the crankshaft and the connecting rod work better.

[0019] As a further description of the above technical solutions:

[0020] The material of the main shaft is stainless steel, and the material of the locating shaft is carbon steel.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the lubrication groove one, the lubrication groove two and the lubrication hole are matched, the lubricating oil is convenient for entering the connecting place of the crankshaft and the connecting rod at the gap, and is convenient for wandering in the inside, and the lubrication is even, the process of disassembling the connecting rod and the crankshaft is avoided, the complexity of maintenance is reduced, the maintenance time is reduced, and the maintenance efficiency is improved.

[0023] 2. In the utility model, the connecting rod shaft is protected by the protective sleeve made of chromium molybdenum steel material, the connecting rod shaft is avoided from being directly contacted with the connecting rod, the whole crankshaft is avoided from being replaced due to the abrasion of the connecting rod shaft, and the service life of the crankshaft is prolonged. DRAWINGS

[0024] Figure 1 A three-dimensional schematic view of a crankshaft for an automobile engine is provided for the utility model;

[0025] Figure 2 A structure schematic view of a balance weight piece of a crankshaft for an automobile engine is provided for the utility model;

[0026] Figure 3 A structure schematic view of a driving gear of a crankshaft for an automobile engine is provided for the utility model;

[0027] Figure 4 A Figure 2 The enlarged view of A in the figure.

[0028] LEGEND:

[0029] 1, main shaft;2, balance weight piece;3, connecting rod shaft;4, locating shaft;5, driving gear;6, flywheel output end;7, lubrication groove one;8, lubrication groove two;9, lubrication hole;10, protective sleeve;11, lubrication gap;12, driving shaft;13, weight reduction groove;14, inertia hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Apparently, 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 are within the protection scope of the utility model.

[0031] Referring to Figures 1 to 3 The utility model provides an embodiment: a crankshaft for automobile engine, including main shaft 1, main shaft 1 is the main connecting other structure's component, eight counterweights 2 are fixedly connected on the outside of main shaft 1, the design is for the counterweight of crankshaft to counterweight 2, the similar one end of two counterweights 2 is fixedly connected with connecting rod axle 3, the design is for the convenience of crankshaft and connecting rod connection, the right side of main shaft 1 is fixedly connected with the disposition axle 4, the design is for the convenience of placing crankshaft to engine inside, the material of main shaft 1 is stainless steel, the material of disposition axle 4 is carbon steel.

[0032] As Figures 2 to 4 The left side of main shaft 1 is fixedly connected with the driving assembly for driving crankshaft, four connecting rod axles 3 are all provided with lubricating groove no. 1 7 on the outside, the design is for cooperating with lubricating groove no. 2 8 and lubricating hole 9, and lubricating oil can be conveniently moved at the connecting place of the crankshaft and the connecting rod to uniformly lubricate the connecting place. Four connecting rod axles 3 are all provided with lubricating groove no. 2 8 on the outside, and four connecting rod axles 3 are all provided with lubricating hole 9 in the inside. The outside of each connecting rod axle 3 is provided with a protection assembly for protecting the connecting rod axle 3.

[0033] The driving assembly comprises a driving shaft 12 and a driving gear 5. The right side of the driving shaft 12 is fixedly connected to the left side of the main shaft 1. The design of the driving shaft 12 is to drive the flywheel output end 6 and the driving gear 5 to rotate under the driving of the main shaft 1. The inside of the driving gear 5 is fixedly connected to the outside of the driving shaft 12. The driving gear 5 functions to drive the external driven gear under the driving of the driving shaft 12, which is an important power output end of the entire crankshaft.

[0034] The flywheel output end 6 is fixedly connected to the outside of the driving shaft 12. The design of the flywheel output end 6 is to facilitate the stability of power output. The inside of the flywheel output end 6 is provided with a plurality of inertia reduction holes 14. By providing the inertia reduction holes 14 on the flywheel output end 6, the rotational inertia of the flywheel output end 6 can be changed, making it more flexible during acceleration and deceleration, which has a positive effect on improving the power response of the engine and improving the driving experience.

[0035] The outside of the driving gear 5 is provided with two weight reduction grooves 13. The design of the weight reduction grooves 13 is to reduce the weight of the driving gear 5. The driving gear 5 is used to drive other structures under the driving of the rotating driving shaft 12. The shape of the flywheel output end 6 is disc-shaped. The disc-shaped flywheel output end 6 can operate more stably. The inertia reduction holes 14 are used to change the rotational inertia of the flywheel output end 6, making it more flexible during acceleration and deceleration, which has a positive effect on improving the power response of the engine and improving the driving experience.

[0036] The protection assembly comprises two protective sleeves 10 arranged outside the connecting rod shaft 3 and a plurality of lubricating grooves 11, the two protective sleeves 10 are matched with each other to wrap the connecting rod shaft 3, and the whole is made of wear-resistant chromium-molybdenum steel containing chromium and molybdenum elements to improve hardness and wear resistance, and the plurality of lubricating grooves 11 are arranged in the protective sleeve 10, the lubricating grooves 11 are used for facilitating the lubricating oil to enter the crankshaft to make the crankshaft and the connecting rod work better.

[0037] The protective sleeve 10 is used for protecting the connecting rod shaft 3 and reducing wear, and the whole is made of wear-resistant chromium-molybdenum steel containing chromium and molybdenum elements to improve hardness and wear resistance, and the lubricating grooves 11 are used for facilitating the lubricating oil to enter the crankshaft to make the crankshaft and the connecting rod work better.

[0038] Working principle: the main shaft 1 is a main component connected with other structures, the design of the counterweight piece 2 is to counterweight the crankshaft, the design of the connecting rod shaft 3 is to facilitate the connection of the crankshaft and the connecting rod, the design of the installation shaft 4 is to facilitate the placement of the crankshaft in the engine, the design of the driving shaft 12 is to drive the flywheel output end 6 and the driving gear 5 to rotate under the driving of the main shaft 1, the driving gear 5 is used to drive the external driven gear under the driving of the driving shaft 12, and is an important power output end of the whole crankshaft, the design of the flywheel output end 6 is to facilitate stable power output, the design of the lubricating groove one 7 is to cooperate with the lubricating groove two 8 and the lubricating hole 9 to facilitate the lubricating oil to move in the connecting position of the crankshaft and the connecting rod, uniformly lubricate the connecting position, reduce the complexity of maintenance, reduce the maintenance time and improve the maintenance efficiency, the cooperation of the lubricating groove one 7, the lubricating groove two 8 and the lubricating hole 9 facilitates the lubricating oil to enter the connecting position of the crankshaft and the connecting rod in the gap and move in the connecting position, uniformly lubricates the connecting position, avoids the process of disassembling the connecting rod and the crankshaft, reduces the complexity of maintenance, reduces the maintenance time and improves the maintenance efficiency.

[0039] The protective sleeve 10 for protecting the connecting rod shaft 3 is a group of two sleeves surrounding the connecting rod shaft 3 to avoid the direct contact of the connecting rod shaft 3 with the connecting rod, and the protective sleeve 10 is also provided with the lubricating grooves 11 facilitating the lubricating oil to enter the crankshaft to make the crankshaft and the connecting rod work better, the material of the protective sleeve 10 is wear-resistant chromium-molybdenum steel containing chromium and molybdenum elements to improve hardness and wear resistance, and the protective sleeve 10 is easy to replace, avoiding the replacement of the whole crankshaft due to the wear of the connecting rod shaft 3, prolonging the service life of the crankshaft, the use of the protective sleeve 10 made of chromium-molybdenum steel protects the connecting rod shaft 3 from directly contacting with the connecting rod, avoiding the replacement of the whole crankshaft due to the wear of the connecting rod shaft 3, prolonging the service life of the crankshaft.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A crankshaft for an automotive engine comprising a main shaft (1), characterized in that: The outer side of the main shaft (1) is fixedly connected with eight counterweight pieces (2), the proximal end of two counterweight pieces (2) is fixedly connected with a connecting rod shaft (3), the right side of the main shaft (1) is fixedly connected with a setting shaft (4), the left side of the main shaft (1) is fixedly connected with a driving assembly for driving the crankshaft, the outer side of four connecting rod shafts (3) is provided with a lubricating groove one (7), the outer side of four connecting rod shafts (3) is provided with a lubricating groove two (8), the inner side of four connecting rod shafts (3) is provided with a lubricating hole (9), and the outer side of each connecting rod shaft (3) is provided with a protection assembly for protecting the connecting rod shaft (3).

2. The crankshaft for an automotive engine according to claim 1, characterized by: The driving assembly comprises a driving shaft (12) and a driving gear (5), the right side of the driving shaft (12) is fixedly connected to the left side of the main shaft (1), and the inner side of the driving gear (5) is fixedly connected to the outer side of the driving shaft (12).

3. The crankshaft for an automotive engine according to claim 2, characterized by: The outer side of the driving shaft (12) is fixedly connected with a flywheel output end (6), and the inner side of the flywheel output end (6) is provided with a plurality of inertia holes (14).

4. The crankshaft for an automotive engine according to claim 2, characterized by: The outer side of the driving gear (5) is provided with two weight reduction grooves (13), and the driving gear (5) is used for driving the external driven gear under the driving of the driving shaft (12).

5. The crankshaft for an automotive engine according to claim 3, characterized by: The shape of the flywheel output end (6) is disc-shaped, and the inertia hole (14) is used for changing the rotational inertia of the flywheel output end (6).

6. The crankshaft for an automotive engine according to claim 1, characterized by: The protection assembly comprises two protection sleeves (10) and a plurality of lubricating seams (11), two protection sleeves (10) are arranged on the outer side of the connecting rod shaft (3), and a plurality of lubricating seams (11) are arranged in the inner side of the protection sleeve (10).

7. The crankshaft for an automotive engine according to claim 6, characterized by: The protection sleeve (10) is used for protecting the connecting rod shaft (3) and reducing its wear, and the lubricating seam (11) is used for facilitating the entry of lubricating oil into the crankshaft.

8. The crankshaft for an automotive engine according to claim 1, characterized by: The material of the main shaft (1) is stainless steel, and the material of the setting shaft (4) is carbon steel.

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