Connecting rod structure, engine and vehicle

Abstract

The invention belongs to the technical field of vehicles, and particularly relates to a connecting rod structure, an engine and a vehicle. The connecting rod structure comprises a connecting rod big end which is connected with the end part, deviating from the connecting rod small end, of the connecting rod body and is provided with a second oil hole communicated with the connecting rod oil duct; the connecting rod upper bearing bush and the connecting rod lower bearing bush are both arranged in the connecting rod big end, third oil holes penetrating through the connecting rod upper bearing bush are formed in the connecting rod upper bearing bush and the connecting rod lower bearing bush in the radial direction of the connecting rod big end, and the third oil holes of the connecting rod upper bearing bush are communicated with the connecting rod oil way. Along the axial direction of the connecting rod big end, the connecting rod upper bearing bush and the connecting rod lower bearing bush are respectively provided with an oil duct communicated with the third oil hole; the first oil pipeline penetrates through the connecting rod upper bearing bush and is communicated with the oil duct of the connecting rod upper bearing bush; and one end of the second oil pipeline communicates with the first oil pipeline, and the other end communicates with the oil duct of the connecting rod lower bearing bush.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a connecting rod structure, an engine and a vehicle. Background Art

[0002] The connecting rod is a key component of the piston and crankshaft. It not only bears the heavy responsibility of transmitting power, but also cleverly realizes the conversion of motion forms. Specifically, it accurately transmits the huge force generated by the reciprocating linear motion of the piston in the cylinder to the crankshaft, thereby driving the crankshaft to rotate. This process is one of the core links in the internal combustion engine's ability to convert thermal energy into mechanical energy.

[0003] The engine connecting rod is designed to be both ingenious and practical. Its big end is specifically designed to tightly connect to the crankshaft's connecting rod journal. This connection is crucial, as it directly affects the engine's stability and efficiency during operation. The big end is typically constructed in two separate halves. This design isn't arbitrary, but is based on practical maintenance and replacement requirements. The two halves are tightly fastened together by high-strength, precision-machined connecting rod bolts, ensuring a secure and reliable connection between the connecting rod and crankshaft.

[0004] Providing a connecting rod bearing between the connecting rod big end and the crankshaft connecting rod journal can reduce the wear between the connecting rod big end and the connecting rod journal, effectively protect the journal, and at the same time reduce the friction resistance between components, improve the operating efficiency of the engine, and enable the engine connecting rod to maintain stable performance under high load and high speed working environment.

[0005] In the related art, there is a phenomenon that the lubricating oil cannot reach the inner wall of the bearing in a timely and sufficient manner, which affects the lubrication effect. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a connecting rod structure, an engine and a vehicle, which aims to at least to a certain extent solve the technical problem that the lubricating oil cannot reach the inner wall of the bearing in a timely and sufficient manner, thereby affecting the lubrication effect.

[0007] The technical solution of the present invention is:

[0008] A connecting rod structure, comprising: a small connecting rod end, provided with a chamber and a plurality of first oil holes communicating with the chamber; a connecting rod body, connected to the small connecting rod end and provided with a connecting rod oil passage communicating with the chamber; a big connecting rod end, connected to the end of the connecting rod body away from the small connecting rod end and provided with a second oil hole communicating with the connecting rod oil passage; an upper connecting rod bearing, and a lower connecting rod bearing detachably connected to the upper connecting rod bearing, wherein the upper connecting rod bearing and the lower connecting rod bearing are both arranged in the big connecting rod end and are connected along the connecting rod. In the radial direction of the big end of the rod, the connecting rod upper bearing and the connecting rod lower bearing are both provided with a third oil hole passing through the connecting rod upper bearing, and the third oil hole of the connecting rod upper bearing is connected with the connecting rod oil channel. Along the axial direction of the big end of the connecting rod, the connecting rod upper bearing and the connecting rod lower bearing are both provided with an oil channel connected with the third oil hole; a first oil pipeline is passed through the connecting rod upper bearing and is connected with the oil channel of the connecting rod upper bearing; a second oil pipeline, one end of which is connected with the first oil pipeline, and the other end is connected with the oil channel of the connecting rod lower bearing.

[0009] In some embodiments, the two third oil holes are respectively located in the middle of the connecting rod upper bearing and the connecting rod lower bearing.

[0010] In some embodiments, the first oil pipeline is closer to the side of the connecting rod upper bearing than the third oil hole of the connecting rod upper bearing; the second oil pipeline is closer to the side of the connecting rod lower bearing than the third oil hole of the connecting rod lower bearing.

[0011] In some embodiments, the number of the first oil pipelines is two, and the two first oil pipelines are symmetrical with the axis of the third oil hole of the connecting rod upper bearing as the axis of symmetry; the number of the second oil pipelines is two, and the two second oil pipelines are symmetrical with the axis of the third oil hole of the connecting rod lower bearing as the axis of symmetry.

[0012] In some embodiments, the first oil pipeline is provided with a first honeycomb hole connected to the oil passage of the connecting rod upper bearing; the second oil pipeline is provided with a second honeycomb hole connected to the oil passage of the connecting rod lower bearing.

[0013] In some embodiments, one of the first oil pipeline and the second oil pipeline is provided with a clamping joint, and the other is provided with a clamping nozzle, and the clamping joint is clamped with the clamping nozzle.

[0014] In some embodiments, the first oil pipeline portion protrudes from the inner surface of the connecting rod upper bearing shell; the second oil pipeline portion protrudes from the inner surface of the connecting rod lower bearing shell.

[0015] In some embodiments, one of the two ends of the connecting rod upper bearing and the two ends of the connecting rod lower bearing is provided with a plurality of protruding teeth, and the other one is provided with a plurality of grooves, and the protruding teeth are embedded in the grooves.

[0016] Based on the same inventive concept, the present application also provides an engine, including the connecting rod mechanism.

[0017] Based on the same inventive concept, the present application also provides a vehicle comprising the engine.

[0018] The beneficial effects of the present invention include at least:

[0019] Since the connecting rod end is provided with a chamber and a plurality of first oil holes connected to the chamber, when the engine is running, the engine crankshaft rotates, stirring the lubricating oil, forming oil droplets or oil mist that splashes onto the connecting rod end, and the lubricating oil enters the chamber through the plurality of first oil holes.

[0020] Since the connecting rod body is connected to the connecting rod small end and is provided with a connecting rod oil passage communicating with the cavity, lubricating oil can enter the connecting rod oil passage through the cavity.

[0021] Since the connecting rod big end is connected to the end of the connecting rod body away from the connecting rod small end and is provided with a second oil hole connected to the connecting rod oil passage, the lubricating oil in the connecting rod oil passage will flow into the second oil hole.

[0022] Since the connecting rod upper bearing and the connecting rod lower bearing detachably connected to the connecting rod upper bearing, the connecting rod upper bearing and the connecting rod lower bearing are both arranged in the connecting rod big end, along the radial direction of the connecting rod big end, the connecting rod upper bearing and the connecting rod lower bearing are both provided with a third oil hole penetrating the connecting rod upper bearing, the third oil hole of the connecting rod upper bearing is connected with the connecting rod oil channel, along the axial direction of the connecting rod big end, the connecting rod upper bearing and the connecting rod lower bearing are both provided with an oil channel connected with the third oil hole, the first oil pipeline is passed through the connecting rod upper bearing and is connected with the oil channel of the connecting rod upper bearing, and the second oil pipeline is provided with a One end is connected with the first oil pipeline, and the other end is connected with the oil channel of the connecting rod lower bearing. Therefore, a part of the lubricating oil can reach the inner surface of the connecting rod upper bearing through the third oil hole of the connecting rod upper bearing to achieve lubrication, and the other part of the lubricating oil can enter the first oil pipeline through the oil channel of the connecting rod upper bearing, and enter the oil channel of the connecting rod lower bearing through the first oil pipeline, the second oil pipeline and the oil channel of the connecting rod lower bearing in turn. The lubricating oil in the oil channel reaches the inner surface of the connecting rod lower bearing through the third oil hole of the connecting rod lower bearing to achieve lubrication.

[0023] Under the action of the connecting rod oil channel, the third oil hole, the first oil pipeline and the second oil pipeline, the lubricating oil can smoothly reach the inner surface of the connecting rod upper bearing and the inner surface of the connecting rod lower bearing from the small end of the connecting rod, and can timely and fully lubricate the inner surface of the connecting rod upper bearing and the inner surface of the connecting rod lower bearing, ensure the lubrication effect, improve the lubrication efficiency, and can effectively reduce the friction resistance between the connecting rod upper bearing and the connecting rod upper bearing and the crankshaft main bearing, reduce energy loss, and improve the engine's operating efficiency, thereby improving the fuel economy and power performance of the car. Whether it is high-speed, high-load intense driving or low-speed, low oil pressure idling state, it can maintain good lubrication and working performance, thereby improving the adaptability and reliability of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 Schematic diagram of the connecting rod structure of some embodiments;

[0026] Figure 2 for Figure 1 Cross-sectional view of the middle connecting rod structure;

[0027] Figure 3 for Figure 1 Exploded diagram of the middle connecting rod structure;

[0028] Figure 4 for Figure 1 Schematic diagram of the structure of the upper bearing of the middle connecting rod structure;

[0029] Figure 5 for Figure 4 A in the middle is an enlarged schematic diagram;

[0030] Figure 6 for Figure 1 Schematic diagram of the structure of the lower bearing of the middle connecting rod structure.

[0031] In the attached figure:

[0032] Connecting rod small end 10, chamber 11, first oil hole 12;

[0033] Connecting rod body 20, connecting rod oil passage 21;

[0034] Connecting rod big end 30, first support base 31, second support base 32, connecting piece 33;

[0035] Connecting rod upper bearing 40, third oil hole 41, oil channel 42, convex tooth 43;

[0036] Connecting rod lower bearing shell 50, groove 51;

[0037] First oil pipeline 60, clamping joint 61, first honeycomb hole 62;

[0038] Second oil delivery pipeline 70, spiral groove 71, and bayonet nozzle 72;

[0039] Bushing 80, fourth oil hole 81;

[0040] Crankshaft main bearing 90. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0046] The connecting rod structure, engine and vehicle provided in this embodiment are intended to at least to some extent solve the technical problem that lubricating oil cannot reach the inner wall of the bearing in a timely and sufficient manner, thereby affecting the lubrication effect.

[0047] Figure 1 Schematic diagram of the connecting rod structure of some embodiments; Figure 2 for Figure 1 Cross-sectional view of the middle connecting rod structure; Figure 3 for Figure 1 Exploded diagram of the middle connecting rod structure; Figure 4 for Figure 1 Schematic diagram of the structure of the upper bearing of the middle connecting rod structure; Figure 6 for Figure 1 Schematic diagram of the structure of the lower bearing of the middle connecting rod structure. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6 The connecting rod structure of the embodiment of the present application includes: a connecting rod end 10, a connecting rod body 20, a connecting rod big end 30, a connecting rod upper bearing 40, a connecting rod lower bearing 50, a first oil pipeline 60, and a second oil pipeline 70. The connecting rod end 10 defines a chamber 11 and a plurality of first oil holes 12 communicating with the chamber 11. The connecting rod body 20 is connected to the connecting rod end 10 and defines a connecting rod oil passage 21 communicating with the chamber 11. The connecting rod big end 30 is connected to the end of the connecting rod body 20 facing away from the connecting rod end 10 and defines a second oil hole communicating with the connecting rod oil passage 21. The connecting rod upper bearing 40 and the connecting rod lower bearing 50, which is detachably connected to the connecting rod upper bearing 40, are both disposed within the connecting rod big end 30. A third oil hole 41 is defined in the connecting rod upper bearing 40 and the connecting rod lower bearing 50 along the radial direction of the connecting rod big end 30, extending through the connecting rod upper bearing 40. The third oil hole 41 of the connecting rod upper bearing 40 communicates with the connecting rod oil passage 21. Axially, the connecting rod upper bearing 40 and the connecting rod lower bearing 50 define an oil passage 42 that communicates with the third oil hole 41. A first oil pipeline 60 is provided through the connecting rod upper bearing 40 and communicates with the oil passage 42 of the connecting rod upper bearing 40. A second oil pipeline 70 communicates with the first oil pipeline 60 at one end and with the oil passage 42 of the connecting rod lower bearing 50 at the other end.

[0048] A plurality of first oil holes 12 penetrate the connecting rod small end 10 along the radial direction of the connecting rod small end 10 .

[0049] Since the connecting rod end 10 is provided with a chamber 11 and a plurality of first oil holes 12 connected to the chamber 11 , when the engine is running, the crankshaft of the engine rotates, stirring the lubricating oil, forming oil droplets or oil mist that splashes onto the connecting rod end 10 , and the lubricating oil enters the chamber 11 through the plurality of first oil holes 12 .

[0050] Since the connecting rod body 20 is connected to the connecting rod small end 10 and defines a connecting rod oil passage 21 communicating with the chamber 11 , lubricating oil can enter the connecting rod oil passage 21 through the chamber 11 .

[0051] Since the connecting rod big end 30 is connected to the end of the connecting rod body 20 away from the connecting rod small end 10 and has a second oil hole connected to the connecting rod oil passage 21, the lubricating oil in the connecting rod oil passage 21 will enter the second oil hole.

[0052] Since the connecting rod upper bearing 40 and the connecting rod lower bearing 50 detachably connected to the connecting rod upper bearing 40, the connecting rod upper bearing 40 and the connecting rod lower bearing 50 are both arranged in the connecting rod big head 30, along the radial direction of the connecting rod big head 30, the connecting rod upper bearing 40 and the connecting rod lower bearing 50 are both provided with a third oil hole 41 passing through the connecting rod upper bearing 40, and the third oil hole 41 of the connecting rod upper bearing 40 is connected to the connecting rod oil passage 21, and along the axial direction of the connecting rod big head 30, the connecting rod upper bearing 40 and the connecting rod lower bearing 50 are both provided with an oil passage 42 connected to the third oil hole 41, the first oil pipeline 60 is passed through the connecting rod upper bearing 40 and is connected to the oil passage 42 of the connecting rod upper bearing 40, and the second oil pipeline 60 is provided with a plurality of oil passages 42 connected to the connecting rod upper bearing 40. One end of the pipeline 70 is connected to the first oil pipeline 60, and the other end is connected to the oil channel 42 of the connecting rod lower bearing 50. Therefore, a part of the lubricating oil can reach the inner surface of the connecting rod upper bearing 40 through the third oil hole 41 of the connecting rod upper bearing 40 to achieve lubrication, and the other part of the lubricating oil can enter the first oil pipeline 60 through the oil channel 42 of the connecting rod upper bearing 40, and enter the oil channel 42 of the connecting rod lower bearing 50 through the first oil pipeline 60, the second oil pipeline 70 and the oil channel 42 of the connecting rod lower bearing 50 in turn. The lubricating oil in the oil channel 42 reaches the inner surface of the connecting rod lower bearing 50 through the third oil hole 41 of the connecting rod lower bearing 50 to achieve lubrication.

[0053] Under the action of the connecting rod oil channel 21, the third oil hole 41, the first oil pipeline 60 and the second oil pipeline 70, the lubricating oil can smoothly reach the inner surface of the connecting rod upper bearing 40 and the inner surface of the connecting rod lower bearing 50 from the connecting rod small head 10, and can timely and fully lubricate the inner surface of the connecting rod upper bearing 40 and the inner surface of the connecting rod lower bearing 50, thereby ensuring the lubrication effect and improving the lubrication efficiency. It can effectively reduce the friction resistance between the connecting rod upper bearing 40 and the connecting rod upper bearing 40 and the crankshaft main bearing 90, reduce energy loss, and improve the operating efficiency of the engine, thereby improving the fuel economy and power performance of the automobile, so that the connecting rod structure can better adapt to the engine operation requirements under different working conditions, whether it is high-speed, high-load intense driving or low-speed, low oil pressure idling state, it can maintain good lubrication and working performance, thereby improving the adaptability and reliability of the engine.

[0054] In some embodiments, because the upper connecting rod bearing 40 is detachably connected to the lower connecting rod bearing 50, the detachable design allows the lower connecting rod bearing 50 to be installed independently of the upper connecting rod bearing 40 during engine assembly. The operator can first accurately place the lower connecting rod bearing 50 on the corresponding position of the connecting rod big end 30 before installing the upper connecting rod bearing 40. This step-by-step installation approach reduces installation difficulty, minimizes installation errors caused by space limitations or operational difficulties, and improves assembly efficiency.

[0055] Combine Figure 1 、 Figure 2 and Figure 3 In some embodiments, a crankshaft main bearing 90 is provided in the connecting rod upper bearing 40 and the connecting rod lower bearing 50, and the crankshaft main bearing 90 is connected to the crankshaft journal to achieve power transmission.

[0056] In some embodiments, a bushing 80 is provided in the chamber 11, and the bushing 80 is provided with a plurality of fourth oil holes 81, and the plurality of fourth oil holes correspond one-to-one to the plurality of first oil holes 12, and the fourth oil holes are connected with the corresponding first oil holes 12. Along the radial direction of the bushing 80, the bushing 80 is provided with a fifth oil hole that passes through the bushing, and the fifth oil hole is connected with the connecting rod oil channel 21.

[0057] When the engine is running, the engine crankshaft rotates, stirring the lubricating oil, forming oil droplets or oil mist that splashes at the connecting rod small end 10. The lubricating oil enters the bushing 80 through multiple first oil holes 12 and multiple fourth oil holes. The fifth oil hole is located at the bottom of the bushing 80. Under the action of gravity, the lubricating oil will enter the connecting rod oil channel 21 through the fifth oil hole.

[0058] Combine Figure 4 and Figure 6 In some embodiments, to ensure uniform distribution of lubricating oil on the inner surfaces of the upper connecting rod bearing 40 and the lower connecting rod bearing 50, two third oil holes 41 are located in the middle of the upper connecting rod bearing 40 and the lower connecting rod bearing 50, respectively. When the lubricating oil passes through the two third oil holes 41 and the inner surfaces of the upper connecting rod bearing 40 and the lower connecting rod bearing 50, the lubricating oil can be evenly diffused from the center to the surrounding area of ​​the inner surfaces of the upper connecting rod bearing 40 and the lower connecting rod bearing 50, forming a uniform oil film on the inner surfaces of the upper connecting rod bearing 40 and the lower connecting rod bearing 50. The uniform oil film can effectively reduce direct contact between the upper connecting rod bearing 40 and the lower connecting rod bearing 50 and the crankshaft main bearing 90, lowering the friction coefficient, making the crankshaft main bearing 90 operate more smoothly, reducing energy loss caused by friction, and improving the mechanical efficiency of the engine or related machinery.

[0059] During engine operation, the crankshaft's speed and load constantly change. At higher speeds or heavier loads, the relative motion between the connecting rod upper and lower bearings 40 and 50 and the crankshaft main bearing 90 accelerates, increasing frictional heat. Evenly distributed lubricating oil promptly dissipates this heat and continuously lubricates the connecting rod upper and lower bearings 40 and 50, along with the crankshaft main bearing 90. This ensures stable lubrication performance under varying operating conditions and prevents dry or boundary friction caused by insufficient lubrication.

[0060] Combine Figure 4 In some embodiments, in order to prevent the first oil pipeline 60 from interfering with the distribution of lubricating oil on the inner surface of the connecting rod upper bearing 40, the first oil pipeline 60 is closer to the side of the connecting rod upper bearing 40 than the third oil hole 41 of the connecting rod upper bearing 40.

[0061] The third oil hole 41, located in the middle of the connecting rod upper bearing 40, is the key channel for lubricating oil to enter the gap between the connecting rod upper bearing 40 and the crankshaft main bearing 90, forming a uniform oil film. The first oil pipeline 60, located near the side of the connecting rod upper bearing 40, prevents it from interfering with the flow of lubricating oil from the third oil hole 41. This allows the lubricating oil to diffuse evenly from the third oil hole 41 along the designed path, forming a stable and uniform oil film on the inner surface of the connecting rod upper bearing 40. This ensures that all parts of the connecting rod upper bearing 40 are fully lubricated, reducing wear and failure caused by insufficient local lubrication.

[0062] Combine Figure 6 In some embodiments, in order to prevent the second oil pipeline 70 from interfering with the distribution of lubricating oil on the inner surface of the connecting rod lower bearing 50, the second oil pipeline 70 is closer to the side of the connecting rod lower bearing 50 than the third oil hole 41 of the connecting rod lower bearing 50.

[0063] The third oil hole 41, located in the center of the lower connecting rod bearing 50, is the key channel for lubricating oil to enter the gap between the lower connecting rod bearing 50 and the crankshaft main bearing 90, forming a uniform oil film. The second oil pipeline 70, located near the side of the lower connecting rod bearing 50, prevents it from interfering with the flow of lubricating oil from the third oil hole 41. This allows the lubricating oil to diffuse evenly from the third oil hole 41 along the designed path, forming a stable and uniform oil film on the inner surface of the lower connecting rod bearing 50. This ensures that all parts of the lower connecting rod bearing 50 are fully lubricated, reducing wear and failure caused by insufficient local lubrication.

[0064] Combine Figure 4 and Figure 6In some embodiments, to ensure that the first oil pipeline 60 can fully transport lubricating oil from the oil passage 42 of the upper connecting rod bearing 40 to the oil passage 42 of the lower connecting rod bearing 50, two first oil pipelines 60 are provided, and the two first oil pipelines 60 are symmetrical about the axis of the third oil hole 41 of the upper connecting rod bearing 40. Two second oil pipelines 70 are provided, and the two second oil pipelines 70 are symmetrical about the axis of the third oil hole 41 of the lower connecting rod bearing 50.

[0065] The two first oil pipelines 60 and the two second oil pipelines 70 operate simultaneously, significantly increasing the flow rate of lubricating oil from the oil passage 42 of the upper connecting rod bearing 40 to the oil passage 42 of the lower connecting rod bearing 50 compared to a single pipeline, ensuring the amount of lubricating oil delivered to the inner surface of the lower connecting rod bearing 50. Under high-speed engine operation or high-load conditions, the demand for lubricating oil increases significantly. The dual-pipeline design ensures a sufficient and timely supply of lubricating oil to meet the lubrication needs between the bearing and the crankshaft journal, avoiding dry friction and increased wear caused by insufficient lubricating oil supply.

[0066] The symmetrical distribution of the two first oil pipelines 60 and the two second oil pipelines 70 allows for shared delivery pressure during lubricating oil transportation, reducing the transport resistance of a single pipeline. This allows for smoother flow of lubricating oil within the two first oil pipelines 60 and the two second oil pipelines 70, minimizing energy loss and improving transport efficiency. This allows the lubricating oil to reach the oil passage 42 of the connecting rod lower bearing 50 more quickly, providing timely lubrication and protection for the bearing.

[0067] Because the two first oil delivery pipes 60 are symmetrical about the axis of the third oil hole 41 of the upper connecting rod bearing 40, the lubricating oil in the oil passage 42 of the upper connecting rod bearing 40 is evenly distributed and delivered to the two second delivery pipes 70. The two second oil delivery pipes 70 are symmetrical about the axis of the third oil hole 41 of the lower connecting rod bearing 50, further ensuring uniform distribution of the lubricating oil on the inner surface of the lower connecting rod bearing 50. This uniform distribution of lubricating oil prevents localized under-lubrication or over-lubrication, ensuring that all parts of the bearing receive optimal lubrication, thereby improving lubrication effectiveness.

[0068] Figure 5 for Figure 4 A in the middle is an enlarged schematic diagram. Figure 5 In some embodiments, the first oil pipeline 60 is provided with a first honeycomb hole 62 connected to the oil channel 42 of the connecting rod upper bearing 40. The honeycomb structure of the first honeycomb hole can absorb a large amount of energy when compressed and has good energy absorption capacity, which helps to absorb and buffer various mechanical shocks during engine operation. The design of the first honeycomb hole can provide more lubrication channels in a limited space, improve space utilization, and ensure the efficient operation of the lubrication system.

[0069] In some embodiments, the second oil pipeline 70 is provided with a second honeycomb hole connected to the oil passage 42 of the connecting rod lower bearing 50. The honeycomb structure of the second honeycomb hole can absorb a large amount of energy when compressed and has good energy absorption capacity, which helps to absorb and buffer various mechanical shocks during engine operation. The design of the second honeycomb hole can provide more lubrication channels in a limited space, improve space utilization, and ensure efficient operation of the lubrication system.

[0070] Combine Figure 6 In some embodiments, in order to guide the lubricating oil, a spiral groove 71 is opened in the first oil pipeline 60 and the second oil pipeline 70, which can guide the lubricating oil in the first oil pipeline 60 to the second oil pipeline 70, and guide the lubricating oil in the second oil pipeline 70 to the oil channel 42 of the connecting rod lower bearing 50. The spiral groove 71 forms a continuous oil guide channel, and when the crankshaft rotates, the centrifugal force is used to transport the engine oil from the oil channel to the contact surface between the crankshaft main bearing 90 and the connecting rod upper bearing 40 and the connecting rod lower bearing 50, ensuring that the friction pair continues to obtain lubricating oil.

[0071] Furthermore, the spiral groove 71 temporarily stores a small amount of oil, replenishing the oil film in time during high-pressure conditions (such as when the piston reverses direction), thereby preventing abnormal wear caused by oil film rupture. The structure of the spiral groove 71 balances oil pressure fluctuations at different speeds, maintaining a stable oil film thickness and reducing direct contact between the crankshaft main bearing 90 and the connecting rod upper and lower bearings 40 and 50.

[0072] Combine Figure 4 and Figure 6 In some embodiments, in order to facilitate the connection between the first oil pipeline 60 and the second oil pipeline 70, one of the first oil pipeline 60 and the second oil pipeline 70 is provided with a clamping joint 61, and the other is provided with a clamping nozzle 72. The clamping joint 61 is clamped with the clamping nozzle 72. The connection between the first oil pipeline 60 and the second oil pipeline 70 is achieved by clamping the clamping joint 61 with the clamping nozzle 72, so that the lubricating oil in the first oil pipeline 60 can flow into the second oil pipeline 70.

[0073] In some embodiments, the first oil pipeline 60 is provided with a clamping joint 61, and the second oil pipeline 70 is provided with a clamping nozzle 72. Of course, in other embodiments, the second oil pipeline 70 is provided with a clamping joint 61, and the second oil pipeline 70 is provided with a clamping nozzle 72.

[0074] Combine Figure 4In some embodiments, to allow the lubricating oil in the first oil pipeline 60 to be transported to the second oil pipeline 70, a portion of the first oil pipeline 60 protrudes from the inner surface of the connecting rod upper bearing 40. During engine operation, the crankshaft main bearing 90 has a certain amount of movement and slight deformation, which squeezes the first oil pipeline 60. The negative pressure generated in the first oil pipeline 60 provides a driving force other than gravity for the delivery of the lubricating oil. Compared to relying solely on gravity or oil pump pressure to deliver lubricating oil, this negative pressure extraction method can increase the driving force for delivery to a certain extent, ensuring that the lubricating oil can flow more smoothly and quickly from the first oil pipeline 60 to the second oil pipeline 70. This advantage is particularly evident when the engine is running at high speed or the lubricating oil viscosity is high. In addition, no oil pump is required, reducing costs.

[0075] Combine Figure 6 In some embodiments, in order to allow the lubricating oil in the second oil pipeline 70 to be transported to the oil passage 42 of the connecting rod lower bearing 50, the second oil pipeline 70 partially protrudes from the inner surface of the connecting rod lower bearing 50. During engine operation, the crankshaft main bearing 90 will have a certain amount of movement space and slight deformation, which will squeeze the second oil pipeline 70, so that the negative pressure generated in the second oil pipeline 70 provides a driving force for the delivery of the lubricating oil in addition to gravity. Compared with relying solely on gravity or oil pump pressure to transport lubricating oil, this negative pressure extraction method can increase the driving force for delivery to a certain extent, ensuring that the lubricating oil can flow more smoothly and quickly from the second oil pipeline 70 to the oil passage 42 of the connecting rod lower bearing 50. This advantage is particularly obvious when the engine is running at high speed or the lubricating oil viscosity is high. In addition, no oil pump is required, which reduces costs.

[0076] Combine Figure 4 In some embodiments, part of the first oil pipeline 60 protrudes from the inner surface of the connecting rod upper bearing 40, and the other part of the first oil pipeline 60 is arranged in the connecting rod upper bearing 40, so that the first oil pipeline 50 is connected with the oil channel 42 of the connecting rod upper bearing 40. At the same time, the interference with the inner surface of the connecting rod upper bearing 40 is reduced, and the lubricating oil can be ensured to be evenly distributed on the inner surface of the connecting rod upper bearing 40, thereby reducing the problem of insufficient lubrication caused by external interference.

[0077] Combine Figure 6 In some embodiments, part of the second oil pipeline 70 protrudes from the inner surface of the connecting rod upper bearing 40, and the other part of the first oil pipeline 70 is arranged in the connecting rod lower bearing 50, so that the first oil pipeline 50 is connected to the oil channel 42 of the connecting rod lower bearing 50. At the same time, the interference with the inner surface of the connecting rod lower bearing 50 is reduced, and the lubricating oil can be ensured to be evenly distributed on the inner surface of the connecting rod lower bearing 50, thereby reducing the problem of insufficient lubrication caused by external interference.

[0078] Combine Figure 1 、 Figure 2 and Figure 3 In some embodiments, to facilitate installation of the connecting rod upper bearing 40 and the connecting rod lower bearing 50, the connecting rod big end 30 includes a first support base 31 and a second support base 32. The first support base 31 is connected to the connecting rod body 20 and houses the connecting rod upper bearing 40. The second support base 32 is detachably connected to the first support base 31 and houses the connecting rod lower bearing 50.

[0079] The connecting rod upper bearing 40 is placed in the first support seat 31, the connecting rod lower bearing 50 is placed in the second support seat 32, and the first support seat 31 and the second support seat 32 are connected by a connecting member 33 to achieve the installation of the connecting rod upper bearing 40 and the connecting rod lower bearing 50. The connecting member 33 can be a bolt.

[0080] Combine Figure 4 and Figure 6 In some embodiments, in order to achieve the connection between the connecting rod upper bearing 40 and the connecting rod lower bearing 50, one of the two ends of the connecting rod upper bearing 40 and the two ends of the connecting rod lower bearing 50 is provided with a plurality of protruding teeth 43, and the other is provided with a plurality of grooves 51, and the protruding teeth 43 are embedded in the grooves 51.

[0081] When the connecting rod upper bearing 40 and the connecting rod lower bearing 50 are to be connected, the protruding teeth 43 are embedded in the grooves 51 to achieve the connection between the connecting rod upper bearing 40 and the connecting rod lower bearing 50, which reduces the installation difficulty and improves the installation efficiency.

[0082] In some embodiments, the ends of the connecting rod upper bearing 40 are provided with a plurality of protruding teeth 43, and the ends of the connecting rod lower bearing 50 are provided with a plurality of grooves 51. Of course, in some other embodiments, the ends of the connecting rod lower bearing 50 are provided with a plurality of protruding teeth 43, and the ends of the connecting rod lower bearing 40 are provided with a plurality of grooves 51.

[0083] In some embodiments, the connecting rod upper bearing shell 40 is installed inside the connecting rod big end 30, ensuring that the connecting rod upper bearing shell 40 and the connecting rod big end 30 are tightly fitted. The crankshaft main bearing shell 90 is installed inside the connecting rod upper bearing shell 40, ensuring that the crankshaft main bearing shell 90, the connecting rod upper bearing shell 40, and the connecting rod lower bearing shell 50 are tightly fitted. Then, the protruding teeth 43 on one side of the upper bearing shell body 40 are engaged with the groove 51 defined in the lower bearing shell body 50, and the lower end of the connecting rod upper bearing shell 40 is checked to ensure that it is properly engaged with the connecting rod lower bearing shell 50. Simultaneously, the first oil pipeline 60 and the second oil pipeline 70 are engaged and connected via the clip 61 and the connector 72, and the second support base 32 is fixed to the first support base 31 via the connector 33. Clean the inside of the connecting rod end 10, apply a small amount of lubricating oil, press the bushing 80 of the connecting rod end into the inside of the connecting rod end 10, ensure that the fourth oil hole 81 of the bushing 80 of the connecting rod end is aligned with the first oil hole 12, inject lubricating oil through the connecting rod oil channel 21, observe whether the lubricating oil flows out from the third oil hole 41 of the connecting rod upper bearing 40, and whether part of the lubricating oil passes through the first oil pipeline 60 to the second oil pipeline 70, passes through the spiral groove 71, and flows out from the third oil hole 41 of the connecting rod lower bearing 50. After confirming that the lubricating oil can flow smoothly, slowly rotate the crankshaft to confirm that the device moves smoothly without abnormal noise.

[0084] Based on the same inventive concept, the present application also proposes an engine, which adopts the connecting rod structure. The specific structure of the connecting rod structure refers to the above-mentioned embodiment. Since all the technical solutions of all the above-mentioned embodiments are adopted, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0085] Based on the same inventive concept, the present application also proposes a vehicle, which adopts the engine. The specific structure of the engine refers to the above-mentioned embodiment. Since all the technical solutions of all the above-mentioned embodiments are adopted, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0086] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0087] In the description of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0089] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0090] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A connecting rod structure, characterized in that: include: The connecting rod small end is provided with a cavity and a plurality of first oil holes communicating with the cavity; A connecting rod body connected to the connecting rod small end and having a connecting rod oil passage communicating with the chamber; A connecting rod big end is connected to the end of the connecting rod body away from the connecting rod small end and is provided with a second oil hole connected to the connecting rod oil passage; a connecting rod upper bearing shell, and a connecting rod lower bearing shell detachably connected to the connecting rod upper bearing shell, the connecting rod upper bearing shell and the connecting rod lower bearing shell both being disposed within the connecting rod big end, the connecting rod upper bearing shell and the connecting rod lower bearing shell both being provided with a third oil hole penetrating the connecting rod upper bearing shell along a radial direction of the connecting rod big end, the third oil hole of the connecting rod upper bearing shell being in communication with the connecting rod oil passage, and the connecting rod upper bearing shell and the connecting rod lower bearing shell being provided with an oil passage in communication with the third oil hole along an axial direction of the connecting rod big end; a first oil pipeline, passing through the connecting rod upper bearing bush and communicating with the oil passage of the connecting rod upper bearing bush; One end of the second oil pipeline is connected to the first oil pipeline, and the other end is connected to the oil channel of the connecting rod lower bearing.

2. The connecting rod structure according to claim 1, characterized in that: The two third oil holes are respectively located in the middle of the connecting rod upper bearing shell and the connecting rod lower bearing shell.

3. The connecting rod structure according to claim 1, characterized in that: The first oil delivery pipeline is closer to the side of the connecting rod upper bearing than the third oil hole of the connecting rod upper bearing; The second oil delivery pipeline is closer to the side of the connecting rod lower bearing bush than the third oil hole of the connecting rod lower bearing bush.

4. The connecting rod structure according to any one of claims 1 to 3, characterized in that: There are two first oil pipelines, and the two first oil pipelines are symmetrical with the axis of the third oil hole of the connecting rod upper bearing as the symmetry axis; There are two second oil pipelines, and the two second oil pipelines are symmetrical with the axis of the third oil hole of the connecting rod lower bearing as the symmetry axis.

5. The connecting rod structure according to any one of claims 1 to 3, characterized in that: The first oil pipeline is provided with a first honeycomb hole connected to the oil passage of the connecting rod upper bearing; The second oil delivery pipeline is provided with a second honeycomb hole which is in communication with the oil passage of the connecting rod lower bearing bush.

6. The connecting rod structure according to any one of claims 1 to 3, characterized in that: One of the first oil pipeline and the second oil pipeline is provided with a clamping joint, and the other is provided with a clamping nozzle, and the clamping joint is clamped with the clamping nozzle.

7. The connecting rod structure according to any one of claims 1 to 3, characterized in that: The first oil delivery pipeline partially protrudes from the inner surface of the connecting rod upper bearing bush; The second oil delivery pipeline portion protrudes from the inner surface of the connecting rod lower bearing shell.

8. The connecting rod structure according to any one of claims 1 to 3, characterized in that: One of the two ends of the connecting rod upper bearing shell and the two ends of the connecting rod lower bearing shell is provided with a plurality of convex teeth, and the other one is provided with a plurality of grooves, and the convex teeth are embedded in the grooves.

9. An engine, characterized in that: The invention comprises a connecting rod structure as described in any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the engine of claim 9.

Images