Transmission linkage mechanism, propulsion device, range extending system and transport vehicle

Abstract

The application relates to a transmission connecting rod mechanism, a driving device, a range extending system and a transport vehicle. The transmission connecting rod mechanism comprises a transmission connecting rod and a bearing assembly. The transmission connecting rod comprises a rotating connecting part and two transmission connecting parts. The two transmission connecting parts are connected to the rotating connecting part respectively. The two transmission connecting parts are arranged at intervals and define an avoiding space. Each transmission connecting part is provided with a mounting through hole. Each mounting through hole is provided with a bearing assembly. The outer circumferential side of the bearing assembly is in contact with the inner surface of the mounting through hole. The bearing assembly has a matching through hole. The mounting through hole has a first inner circumferential line and a second inner circumferential line. The first inner circumferential line is located between the second inner circumferential line and the avoiding space. The inner diameter of the first inner circumferential line is greater than or equal to the inner diameter of the second inner circumferential line. The structure of the transmission connecting rod is stable, and the partial structure deformation of the transmission connecting rod cannot exceed the elastic limit and cannot be restored.

Description

Technical Field

[0001] This application relates to the field of power system technology, and in particular to a transmission linkage mechanism, a starting device, a range extender system, and a transport vehicle. Background Technology

[0002] Range-extended electric vehicles are equipped with a range extender, which generates electricity and charges the high-voltage battery of the electric vehicle to improve its range. Some range extenders use a forked connecting rod to drive the crankshaft.

[0003] In the process of traditional bifurcated connecting rods driving the crankshaft to rotate, the bifurcated connecting rods are subjected to uneven forces and are prone to deformation. Utility Model Content

[0004] This application provides a transmission linkage mechanism, a starting device, a range extender system, and a transport vehicle, aiming to solve the problems of uneven force distribution and easy deformation of traditional bifurcated linkages.

[0005] In a first aspect, embodiments of this application provide a transmission linkage mechanism, which includes a transmission link and a bearing assembly. The transmission link includes a rotating connection portion and two transmission connection portions, which are respectively connected to the rotating connection portion. The two transmission connection portions are spaced apart from each other and define a clearance space. Each transmission connection portion is provided with a mounting through hole. A bearing assembly is provided in each mounting through hole. The outer peripheral side of the bearing assembly contacts the inner surface of the mounting through hole. The bearing assembly has a mating through hole. The mounting through hole has a first inner circumference line and a second inner circumference line. The first inner circumference line is located between the second inner circumference line and the clearance space. The inner diameter of the first inner circumference line is larger than the inner diameter of the second inner circumference line.

[0006] In some optional embodiments, the inner diameter of the mounting through hole gradually increases in the direction approaching the clearance space; the outer diameter of the bearing assembly gradually increases in the direction approaching the clearance space.

[0007] In some optional embodiments, the mounting through hole includes a first hole segment and a second hole segment, the second hole segment being located at the end of the first hole segment away from the clearance space; the minimum inner diameter of the first hole segment is greater than or equal to the maximum inner diameter of the second hole segment, and the inner surfaces of the first hole segment and the second hole segment are not coplanar.

[0008] In some optional embodiments, the inner diameter of the first hole gradually increases along the direction close to the clearance space, while the inner diameter of the second hole remains unchanged in the axial direction of the mounting through hole.

[0009] In some optional embodiments, the inner diameter of the first hole gradually increases along the direction approaching the clearance space, and the inner diameter of the second hole gradually increases along the direction approaching the clearance space.

[0010] In some optional embodiments, the inner diameter of the first hole segment remains unchanged in the axial direction of the mounting through hole, and the inner diameter of the second hole segment remains unchanged in the axial direction of the mounting through hole.

[0011] In some optional embodiments, the transmission link further includes a limiting part, and each transmission connection part is connected to at least one limiting part; the limiting part is located at the end of the mounting through hole near the clearance space, and the bearing assembly contacts the limiting part.

[0012] Secondly, embodiments of this application provide an engine device, which includes a transmission crankshaft, a drive cylinder, and the aforementioned transmission connecting rod mechanism. The drive cylinder is disposed on one side of the transmission crankshaft; the rotating connection portion of the transmission connecting rod is rotatably connected to the drive cylinder; the transmission crankshaft passes through the mating through holes of two bearing assemblies; and the drive cylinder drives the transmission crankshaft to rotate through the transmission connecting rod mechanism.

[0013] Thirdly, embodiments of this application provide a range extender system, which includes a power generation device and a starting device as described above. The power generation device includes a stator mechanism and a rotor mechanism, with the rotor mechanism rotatably disposed relative to the stator mechanism; a transmission crankshaft is driven and connected to the rotor mechanism.

[0014] Fourthly, embodiments of this application provide a transport vehicle, which includes a vehicle body, an energy storage system, and a range extender system as described above. The energy storage system is installed on the vehicle body; the range extender system is installed on the vehicle body, and the range extender system is electrically connected to the energy storage system.

[0015] This application provides a transmission linkage mechanism, which includes a transmission link and a bearing assembly. The transmission link includes a rotating connection portion and two transmission connection portions, which are respectively connected to the same side of the rotating connection portion. The two transmission connection portions are spaced apart from each other and define a clearance space. Each transmission connection portion has a mounting through hole for the connecting rod journal to pass through. In this embodiment, a bearing assembly is provided in each mounting through hole. The bearing assembly has a mating through hole, and the connecting rod journal passes through the mating through hole. The bearing assembly is located between the transmission connection portion and the connecting rod journal to protect the structure of the connecting rod journal. In this embodiment, the outer peripheral side of the bearing assembly contacts the inner surface of the mounting through hole to support the structure of the transmission connection portion. In this embodiment, the mounting through hole has a first inner circumference and a second inner circumference. The first inner circumference is located between the second inner circumference and the clearance space, and the inner diameter of the first inner circumference is larger than the inner diameter of the second inner circumference.

[0016] In this embodiment, the side of the transmission connection closer to the clearance space is referred to as the inner side of the transmission connection, and the side of the transmission connection farther from the clearance space is referred to as the outer side of the transmission connection. In this embodiment, the end of the mounting through hole near the outer side is constricted relative to the end near the inner side, and the mounting through hole is approximately "trumpet-shaped". In this embodiment, the thickness of the transmission connection in the radial direction of the mounting through hole tends to decrease along the direction closer to the clearance space, with the inner thickness being smaller than the outer thickness. Under the configuration of this embodiment, the plug applies a force to the transmission connection. The structure of the transmission connection causes the force to tend to act on the outer side, increasing the force on the outer side and reducing the force on the inner side, preventing excessive force on the inner side from causing deformation. The outer side has a larger thickness and a more stable structure to overcome the applied force. The configuration of this embodiment makes the structure of the transmission link more stable, reduces the degree of deformation of the transmission link, and prevents the deformation of part of the transmission link (forked link) from exceeding the elastic limit and becoming irrecoverable, thus protecting the structure of the transmission link. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the transport vehicle provided in the embodiments of this application.

[0019] Figure 2 This is a schematic diagram of the range extension system for a transport vehicle provided in the embodiments of this application.

[0020] Figure 3 This is a schematic diagram of the starting device of the range extender system provided in the embodiments of this application.

[0021] Figure 4 yes Figure 3 The diagram shows the structure of the transmission crankshaft of the engine device.

[0022] Figure 5 This is a schematic diagram of the transmission linkage mechanism of the starting device provided in the embodiments of this application.

[0023] Figure 6 yes Figure 5 The diagram shows a structural schematic of the first embodiment of the transmission link.

[0024] Figure 7 yes Figure 5 The diagram shows the structural schematic of the inner circumference of the transmission connecting rod.

[0025] Figure 8 yes Figure 5 A schematic diagram of the second embodiment of the transmission link shown.

[0026] Figure 9 yes Figure 5 A schematic diagram of a third embodiment of the transmission linkage shown.

[0027] Figure 10 yes Figure 5 Another structural schematic diagram of the third embodiment of the transmission link shown.

[0028] Figure 11 yes Figure 5 The diagram shows a structural schematic of the fourth embodiment of the transmission link.

[0029] Figure 12 yes Figure 5 The diagram shows the transmission connecting rod and bushing assembly in a disassembled state.

[0030] Reference numerals: 1000, Transport vehicle; 900, Vehicle body; 800, Energy storage system; 700, Range extender system; 600, Power generation unit; 610, Stator mechanism; 620, Rotor mechanism; 500, Engine; 400, Drive crankshaft; 410, Main journal; 420, Connecting rod journal; 300, Drive cylinder; 310, Cylinder block; 320, Plug; 100, Transmission connecting rod mechanism; 10, Transmission... 11. Moving link; 12. Forked link; 13. Rotating connection; 14. Connecting part; 15. Transmission connection; 16. Mounting through hole; 17. First hole section; 18. Second hole section; 19. First inner circumference line; 10. Second inner circumference line; 111. Limiting part; 12. Clearance space; 13. Linear link; 20. Bearing assembly; 21. Bearing sheet; 22. Mating through hole. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0032] Please see Figure 1 and Figure 2This application provides a transmission linkage mechanism 100, an engine 500 configured with the transmission linkage mechanism 100, a range extender system 700 configured with the engine 500, and a transport vehicle 1000 configured with the range extender system 700. In this embodiment, the transport vehicle 1000 is a means of transportation for carrying people or goods, and the type of transport vehicle 1000 includes vehicles (e.g., cars, trucks), aircraft (helicopters, passenger planes), ships (cargo ships, passenger ships), etc. In this embodiment, the transport vehicle 1000 is a vehicle; in other embodiments, the transport vehicle 1000 may be an aircraft or a ship, etc.

[0033] In this embodiment, the transport vehicle 1000 includes a vehicle body 900, which forms the main structure of the transport vehicle 1000, giving it the shape of a vehicle or aircraft. In this embodiment, the transport vehicle 1000 is a vehicle, and the structural outline of the vehicle body 900 is vehicle-shaped. The vehicle body 900 can define functional spaces such as a cabin and a cargo hold. In this embodiment, the transport vehicle 1000 also includes an energy storage system 800, which may include a low-voltage battery (referring to a battery with a rated voltage of 12V or 48V). The low-voltage battery stores electrical energy to power the electrical equipment on the transport vehicle 1000, which may include a central control platform, air conditioning, headlights, etc. In this embodiment, the transport vehicle 1000 is a range-extended electric vehicle, and the energy storage system 800 also includes a high-voltage battery (referring to a battery with a rated voltage of 300V or more, such as 300V, 350V, 570V, 800V, etc.). The high-voltage battery is used to power the drive motor of the transport vehicle 1000, and the drive motor is used to drive one or more wheel sets of the transport vehicle 1000 to rotate so that the vehicle can move.

[0034] In this embodiment, the transport vehicle 1000 also includes a range extender system 700, which is electrically connected to the energy storage system 800 (high-voltage battery). In actual application scenarios, the range extender system 700 generates electrical energy and delivers it to the high-voltage battery to store the generated electrical energy in the high-voltage battery, thereby charging the high-voltage battery, improving the range of the electric vehicle, and enhancing the user's driving experience.

[0035] In this embodiment, the range extender system 700 includes a generator 600 and a starting device 500. The starting device 500 is drive-connected to the generator 600 to transfer mechanical energy to the generator 600. The generator 600 converts the mechanical energy into electrical energy and transfers the electrical energy to a high-voltage battery. In this embodiment, a rectifier and a DC-DC converter may be electrically connected in sequence between the generator 600 and the high-voltage battery. In some embodiments, the starting device 500 is an engine, and the generator 600 is a generator.

[0036] Please see Figure 2 and Figure 3 In this embodiment, the starting device 500 has an output shaft, through which the starting device 500 transmits mechanical energy to the power generation device 600. Specifically, the power generation device 600 in this embodiment includes a stator mechanism 610 and a rotor mechanism 620. The stator mechanism 610 is arranged around the outer periphery of the rotor mechanism 620, and the rotor mechanism 620 is rotatably arranged relative to the stator mechanism 610. The rotor mechanism 620 is drive-connected to the output shaft of the starting device 500. In practical application scenarios, the stator mechanism 610 remains stationary relative to the surrounding environment (e.g., the vehicle body 900, the energy storage system 800, etc.). The rotor mechanism 620 rotates relative to the stator mechanism 610 under the drive of the output shaft to generate electrical energy, which is then transmitted to the energy storage system 800. The power generation device 600 in this embodiment is an internal rotor type power generation device. In other embodiments, the rotor mechanism 620 may be arranged around the outer periphery of the stator mechanism 610 and rotatably arranged relative to the stator mechanism 610, and the rotor mechanism 620 is drive-connected to the output shaft of the starting device 500. In this embodiment, the stator mechanism 610 may include an iron core and windings, and the rotor mechanism 620 may include a rotating shaft and permanent magnets (or excitation windings).

[0037] Please see Figure 2 , Figure 3 and Figure 4In this embodiment, the starting device 500 may include a drive crankshaft 400, which serves as the output shaft of the starting device 500. The drive crankshaft 400 is connected to the rotor mechanism 620 of the generator 600 to transmit mechanical energy. In this embodiment, the starting device 500 also includes a drive cylinder 300 and a transmission connecting rod mechanism 100. The drive cylinder 300 is disposed on one side of the drive crankshaft 400, and drives the drive crankshaft 400 to rotate through the transmission connecting rod mechanism 100. Specifically, the drive crankshaft 400 includes two main journals 410 and at least one connecting rod journal 420. The axes of the two main journals 410 coincide, and the connecting rod journal 420 is connected between the two main journals 410. The axis of the connecting rod journal 420 is spaced apart from and parallel to the axis of the main journals 410. In this embodiment, the transmission crankshaft 400 rotates entirely around the axis of the main journal 410, and one of the two main journals 410 is connected to the rotor mechanism 620 of the power generation device 600. In this embodiment, the drive cylinder 300 includes a cylinder body 310 and a piston 320, the piston 320 being movably mounted in the inner cavity of the cylinder body 310, and the piston 320 being movable relative to the cylinder body 310 along the axial direction of the cylinder body 310. In this embodiment, one end of the transmission connecting rod mechanism 100 is rotatably connected to the piston 320, and the other end is rotatably connected to the connecting rod journal 420. In practical applications, the piston 320 reciprocates within the cylinder 310 along the axial direction of the cylinder 310. The piston 320 drives the connecting rod journal 420 to rotate around the axis of the main journal 410 via the transmission linkage mechanism 100, thereby driving the entire transmission crankshaft 400 to rotate around the axis of the main journal 410, so as to drive the rotor mechanism 620 of the generator 600 to rotate.

[0038] Please see Figure 3 , Figure 4 and Figure 5In this embodiment, the transmission linkage mechanism 100 includes a transmission linkage 10, which connects the piston body 320 and the transmission crankshaft 400 to transmit or convert kinetic energy, for example, converting the translational kinetic energy of the piston body 320 into the rotational kinetic energy of the linkage journal 420 (or the transmission crankshaft 400). In this embodiment, the transmission linkage 10 includes a rotating connection portion 111 and two transmission connection portions 113, which are respectively connected to the rotating connection portion 111. The two transmission connection portions 113 have approximately the same protrusion direction relative to the rotating connection portion 111, and are arranged side by side with a gap. The space defined by the two transmission connection portions 113 is defined as a clearance space 115. In this embodiment, each transmission connection portion 113 is provided with a mounting through hole 1130, which is used to cooperate with the transmission crankshaft 400, and the transmission crankshaft 400 passes through the mounting through hole 1130. In this embodiment, the axes of the two mounting through holes 1130 coincide, and the two transmission connection parts 113 (mounting through holes 1130) cooperate with the same connecting rod journal 420. The connecting rod journal 420 passes through the two mounting through holes 1130 of the transmission connection part 113 in sequence.

[0039] In this embodiment, the transmission connection 113 is generally cylindrical. The transmission connecting rod 10 in this embodiment also includes two connecting portions 112, which correspond one-to-one with the two transmission connection portions 113. Each connecting portion 112 is connected between the rotating connection portion 111 and the corresponding transmission connection portion 113. In this embodiment, the connecting portion 112 protrudes relative to the rotating connection portion 111, so that there is a large distance between the transmission connection portion 113 and the rotating connection portion 111, so as to avoid the transmission connection portion 113 and the plug body 320 (or cylinder body 310) interfering with each other.

[0040] Please see Figure 3 In this embodiment, the starting device 500 includes a transmission link 10 with two transmission connection portions 113. This type of transmission link 10 is referred to as a "forked link 11" in this embodiment. Such links also have other names, such as "fork-shaped link," or, depending on the shape formed by the two transmission connection portions 113, "U-shaped link" or "C-shaped link," etc. In this embodiment, the starting device 500 may also include a transmission link 10 with one transmission connection portion 113. This type of link has a straight structure, and in this embodiment, it is referred to as a "straight link 12." To distinguish the type of transmission link 10, the transmission link 10 with two transmission connection portions 113 will be referred to as a "forked link 11" below.

[0041] Please see Figure 3 , Figure 4 and Figure 5In this embodiment, a forked connecting rod 11 and a linear connecting rod 12 form a transmission group. Each transmission connecting rod 10 is equipped with a drive cylinder 300, and a transmission crankshaft 400 is located between two drive cylinders 300. In this embodiment, a transmission group cooperates with the same connecting rod journal 420. Specifically, at least a portion of the transmission connection portion 113 of the linear connecting rod 12 is located in the clearance space 115. The mounting through hole 1130 of the linear connecting rod 12 is located between the two mounting through holes 1130 of the forked connecting rod 11. The axes of the three mounting through holes 1130 coincide, and the connecting rod journal 420 passes through the three mounting through holes 1130 in sequence to cooperate with a forked connecting rod 11 and a linear connecting rod 12.

[0042] In this embodiment, the forked connecting rod 11 has two transmission connection parts 113, which can improve the kinetic energy transmission efficiency between the drive cylinder 300 and the transmission crankshaft 400 (connecting rod journal 420), reduce the number of connecting rod journals 420 and drive cylinders 300, reduce the axial length of the transmission crankshaft 400, and make the space occupied by the engine device 500 and the range extender system 700 smaller, thereby reducing the processing complexity and weight of the transmission crankshaft 400. In this embodiment, in addition to cooperating with one forked connecting rod 11, the connecting rod journal 420 also cooperates with a linear connecting rod 12, which improves the kinetic energy output efficiency of the transmission crankshaft 400, improves the power generation efficiency of the power generation device 600, and improves the charging efficiency of the range extender system 700 to the energy storage system 800.

[0043] In this embodiment, the transmission crankshaft 400 includes a plurality of connecting rod journals 420, which are sequentially connected between two main journals 410. The phase difference between two adjacent connecting rod journals 420 is set according to specific circumstances. In this embodiment, the phase difference between two adjacent connecting rod journals 420 is 180°. In other embodiments, the phase difference between two adjacent connecting rod journals 420 can be 0°, 60°, 90°, 120°, 270°, etc. In this embodiment, each connecting rod journal 420 mates with a transmission connecting rod 10. As an example, the connecting rod journal 420 can mate with a forked connecting rod 11. As another example, the connecting rod journal 420 can mate with a straight connecting rod 12. As yet another example, the connecting rod journal 420 can mate with a transmission assembly.

[0044] Please see Figure 5 and Figure 6In this embodiment, each mounting through hole 1130 of the fork-shaped connecting rod has two ports. The inner diameter of the port of the mounting through hole 1130 closer to the clearance space 115 is larger than the inner diameter of the port of the mounting through hole 1130 farther from the clearance space 115. The transmission linkage mechanism 100 in this embodiment also includes a bearing assembly 20, which is installed in the mounting through hole 1130. The outer peripheral side of the bearing assembly 20 contacts at least a portion of the inner surface of the mounting through hole 1130. In this embodiment, the axial dimension of the bearing assembly 20 is greater than or equal to the axial dimension of the mounting through hole 1130, so that the inner surface of the mounting through hole 1130 is supported by the bearing assembly 20, thereby avoiding partial suspension of the inner surface of the mounting through hole 1130 and preventing an increase in the degree of uneven force on the inner surface of the mounting through hole 1130. In this embodiment, the bearing assembly 20 has a mating through hole 22, which is coaxially arranged with the mounting through hole 1130. The connecting rod journal 420 is rotatably inserted through the mating through hole 22. In this embodiment, the mating through hole 22 is a cylindrical space with the same inner diameter at all positions; the connecting rod journal 420 is a cylindrical shaft with the same outer diameter at all positions.

[0045] Please see Figure 7 In this embodiment, the mounting through hole 1130 has an inner circumferential line, which refers to the closed curve formed by the inner edge of the mounting through hole 1130, and is the circumferential outline of the circular space-shaped mounting through hole 1130. In this embodiment, the multiple inner circumferential lines of the mounting through hole 1130 include a first inner circumferential line 1133 and a second inner circumferential line 1134. The first inner circumferential line 1133 is located between the second inner circumferential line 1134 and the clearance space 115. The inner diameter of the first inner circumferential line 1133 is larger than the inner diameter of the second inner circumferential line 1134. The inner diameter of the mounting through hole 1130 tends to increase along the direction closer to the clearance space 115, so that the mounting through hole 1130 is a funnel-shaped through hole.

[0046] In summary, this application provides a transmission linkage mechanism 100, which includes a transmission link 10 and a bearing assembly 20. The transmission link 10 includes a rotating connection portion 111 and two transmission connection portions 113, which are respectively connected to the same side of the rotating connection portion 111. The two transmission connection portions 113 are spaced apart from each other and define a clearance space 115. Each transmission connection portion 113 has a mounting through hole 1130 for the connecting rod journal 420 to pass through. In this embodiment, a bearing assembly 20 is provided in each mounting through hole 1130. The bearing assembly 20 has a mating through hole 22, through which the connecting rod journal 420 passes. The bearing assembly 20 is located between the transmission link portion 113 and the connecting rod journal 420 to protect the structure of the connecting rod journal 420. In this embodiment, the outer peripheral side of the bearing assembly 20 contacts the inner surface of the mounting through hole 1130 to support the structure of the transmission link portion 113. In this embodiment, the mounting through hole 1130 has a first inner circumferential line 1133 and a second inner circumferential line 1134. The first inner circumferential line 1133 is located between the second inner circumferential line 1134 and the clearance space 115. The inner diameter of the first inner circumferential line 1133 is larger than the inner diameter of the second inner circumferential line 1134.

[0047] In this embodiment, the side of the transmission connection 113 closest to the clearance space 115 is referred to as the inner side of the transmission connection 113, and the side of the transmission connection 113 furthest from the clearance space 115 is referred to as the outer side of the transmission connection 113. In this embodiment, the end of the mounting through hole 1130 near the outer side is constricted relative to the end of the mounting through hole 1130 near the inner side, and the mounting through hole 1130 is approximately "trumpet-shaped". In this embodiment, the thickness of the transmission connection 113 in the radial direction of the mounting through hole 1130 tends to decrease along the direction close to the clearance space 115, with the inner thickness being smaller than the outer thickness. In this embodiment, when the plug 320 applies a force to the transmission connection 113, the structure of the transmission connection 113 causes the force to tend to act on the outer side, increasing the force on the outer side and reducing the force on the inner side, thus preventing excessive force on the inner side from causing deformation. The outer side has a larger thickness and a more stable structure to overcome the applied force. The configuration of this embodiment makes the structure of the transmission link 10 more stable, reduces the degree of deformation of the transmission link 10, and prevents the partial structural deformation of the transmission link 10 (forked link 11) from exceeding the elastic limit and becoming unrecoverable, thus protecting the structure of the transmission link 10.

[0048] Please see Figure 6In this embodiment, the transmission link 10 further includes a limiting portion 114, and each transmission connection portion 113 is connected to at least one limiting portion 114. In this embodiment, the limiting portion 114 is located at one end of the mounting through hole 1130 near the clearance space 115. When the bearing assembly 20 and the transmission link 10 are in the assembled state, the bearing assembly 20 contacts at least one limiting portion 114, and the limiting portion 114 can prevent the bearing assembly 20 from falling out of the mounting through hole 1130. In this embodiment, the limiting portion 114 includes at least one of a protrusion structure or a baffle structure.

[0049] In this embodiment, the inner diameter of the mounting through hole 1130 tends to increase along the direction close to the clearance space 115 (the direction from the outside to the inside). The mounting through hole 1130 has a variety of hole shapes that conform to this trend, which will be introduced one by one below.

[0050] Please see Figure 6 In the first embodiment of this application, the inner surface of the mounting through hole 1130 is a complete curved surface, and the inner diameter of the mounting through hole 1130 gradually increases along the direction approaching the clearance space 115. Therefore, in the first embodiment, the inner surface of the mounting through hole 1130 is approximately the side of a frustum. In the first embodiment, the structure of the bearing assembly 20 is adapted to the hole shape of the mounting through hole 1130, and the outer diameter of the bearing assembly 20 gradually increases along the direction approaching the clearance space 115. The bearing assembly 20 is approximately frustum shaped. When the bearing assembly 20 and the transmission connecting rod 10 are in the assembled state, the bearing assembly 20 and the transmission connecting rod 10 are interference-fitted, and the outer peripheral side of the bearing assembly 20 contacts and fits against the inner surface of the mounting through hole 1130. Under the configuration of the first embodiment, the processing of the transmission connecting rod 10 and the bearing assembly 20 is relatively simple, which can effectively increase the force on the outer side and reduce the force on the inner side, making the force on the inner and outer sides more uniform. In the first embodiment of this application, the first inner circumferential line 1133 and the second inner circumferential line 1134 can be contour lines located at any two circumferential positions of the mounting through hole 1130.

[0051] Please see Figure 8In other embodiments of this application, the inner surface of the mounting through hole 1130 is not a smooth curved surface; the inner surface of the mounting through hole 1130 includes at least two non-coplanar curved surfaces. Specifically, in such embodiments, the mounting through hole 1130 includes a first hole segment 1131 and a second hole segment 1132, the second hole segment 1132 being located at the end of the first hole segment 1131 away from the clearance space 115, and the minimum inner diameter of the first hole segment 1131 being greater than or equal to the maximum inner diameter of the second hole segment 1132. In such embodiments, the inner surface of the first hole segment 1131 and the inner surface of the second hole segment 1132 are not coplanar. In this embodiment, the first hole segment 1131 and the second hole segment 1132 can be directly connected. In some other embodiments, the first hole segment 1131 and the second hole segment 1132 can be spaced apart, and the inner diameter of the segment between the first hole segment 1131 and the second hole segment 1132 can remain constant or gradually increase in the direction approaching the clearance space 115. In the first embodiment, the mounting through hole 1130 may also include a first hole segment 1131 and a second hole segment 1132 (not shown in the figure). In the first embodiment, the second hole segment 1132 is located at the end of the first hole segment 1131 away from the clearance space 115, and the minimum inner diameter of the first hole segment 1131 is greater than or equal to the maximum inner diameter of the second hole segment 1132. In the first embodiment, the inner surface of the first hole segment 1131 is coplanar with the inner surface of the second hole segment 1132.

[0052] Based on the fact that the inner surface of the mounting through hole 1130 is not a smooth curved surface, this application provides a second embodiment. In the second embodiment, the inner diameter of the first hole segment 1131 gradually increases along the direction approaching the clearance space 115, while the inner diameter of the second hole segment 1132 remains unchanged in the axial direction of the mounting through hole 1130. In the second embodiment, the first hole segment 1131 is a "trumpet" shaped through hole, and the second hole segment 1132 is a through hole with a cylindrical profile. The minimum inner diameter of the first hole segment 1131 is the inner diameter of one end of the first hole segment 1131 near the second hole segment 1132, and the maximum inner diameter of the second hole segment 1132 is its inner diameter.

[0053] In the second embodiment, the structure of the bearing assembly 20 is adapted to the hole shape of the mounting through hole 1130. The outer diameter of the portion of the bearing assembly 20 corresponding to the first hole segment 1131 gradually increases along the direction close to the clearance space 115, while the outer diameter of the portion of the bearing assembly 20 corresponding to the second hole segment 1132 remains unchanged in the axial direction of the mating through hole 22. When the bearing assembly 20 and the transmission connecting rod 10 are in the assembled state, the bearing assembly 20 and the transmission connecting rod 10 are in an interference fit, and the outer peripheral side of the bearing assembly 20 contacts and fits against the inner surface of the mounting through hole 1130. Under the configuration of the second embodiment, the structure of the transmission connection portion 113 can increase the force received on the outer side and reduce the force received on the inner side, making the force on the inner and outer sides more uniform. In the second embodiment of this application, the first inner circumferential line 1133 and the second inner circumferential line 1134 can be located simultaneously in the first hole segment 1131, or can be located in the first hole segment 1131 and the second hole segment 1132, respectively.

[0054] Please see Figure 9 and Figure 10 Based on the fact that the inner surface of the mounting through hole 1130 is not a smooth curved surface, this application provides a third embodiment. In the third embodiment, the inner diameter of the first hole segment 1131 gradually increases along the direction approaching the clearance space 115, and the inner diameter of the second hole segment 1132 also gradually increases along the direction approaching the clearance space 115. In the third embodiment, the first hole segment 1131 is a "trumpet" shaped through hole, and the second hole segment 1132 is also a "trumpet" shaped through hole. In the third embodiment, the rate of increase of the inner diameter of the first hole segment 1131 is different from that of the second hole segment 1132. The rate of increase of the inner diameter refers to the difference between the inner diameters of the two inner circumferences when the distance between the center points of the two inner circumferences of the hole segment is fixed. A larger difference in the inner diameter indicates a larger rate of increase in the inner diameter of the hole segment, and a smaller difference indicates a smaller rate of increase in the inner diameter of the hole segment. As an example, such as... Figure 9 As shown, the inner diameter of the first hole segment 1131 increases by a smaller margin than that of the second hole segment 1132, so that the force applied to the outer side increases more. As another example, such as... Figure 10 As shown, the inner diameter of the first hole segment 1131 increases by a greater margin than that of the second hole segment 1132, so that the increase in the force on the outer side is relatively smaller.

[0055] In the third embodiment, the structure of the bearing assembly 20 is adapted to the hole configuration of the mounting through hole 1130. The outer diameter of the portion of the bearing assembly 20 corresponding to the first hole segment 1131 gradually increases in the direction approaching the clearance space 115, and the outer diameter of the portion of the bearing assembly 20 corresponding to the second hole segment 1132 gradually increases in the direction approaching the clearance space 115. The increase in the outer diameter of the two portions of the bearing assembly 20 corresponds to the increase in the inner diameter of the hole segment. When the bearing assembly 20 and the transmission connecting rod 10 are in the assembled state, the bearing assembly 20 and the transmission connecting rod 10 are interference-fitted, and the outer peripheral side of the bearing assembly 20 contacts and fits against the inner surface of the mounting through hole 1130. In the configuration of the third embodiment, the structure of the transmission connection portion 113 can adjust the increase in the force received on the outer side and the decrease in the force received on the inner side to adapt to different forces applied by the plug 320. In the third embodiment of this application, the first inner circumferential line 1133 and the second inner circumferential line 1134 can be located simultaneously in the first hole segment 1131, can be located simultaneously in the second hole segment 1132, or can be located in the first hole segment 1131 and the second hole segment 1132 respectively.

[0056] Please see Figure 11 Based on the fact that the inner surface of the mounting through hole 1130 is not a smooth curved surface, this application provides a fourth embodiment. In the fourth embodiment, the inner diameter of the first hole segment 1131 remains unchanged in the axial direction of the mounting through hole 1130, and the inner diameter of the second hole segment 1132 also remains unchanged in the axial direction of the mounting through hole 1130. In the fourth embodiment, the first hole segment 1131 is a through hole with a cylindrical profile, and the second hole segment 1132 is a through hole with a cylindrical profile. The minimum inner diameter of the first hole segment 1131 is its inner diameter, and the maximum inner diameter of the second hole segment 1132 is its inner diameter. In the fourth embodiment, the structure of the bearing assembly 20 is adapted to the hole shape of the mounting through hole 1130, and the outer diameter of the portion of the bearing assembly 20 corresponding to the first hole segment 1131 is larger than the outer diameter of the portion of the bearing assembly 20 corresponding to the second hole segment 1132. When the bearing assembly 20 and the transmission connecting rod 10 are assembled, the bearing assembly 20 and the transmission connecting rod 10 are interference-fitted, and the outer peripheral side of the bearing assembly 20 contacts and fits against the inner surface of the mounting through hole 1130. In the fourth embodiment, the structure of the transmission connection portion 113 can increase the force received on the outer side and reduce the force received on the inner side, resulting in more uniform force distribution on both the inner and outer sides. The cylindrical hole segment makes the fit between the transmission connection portion 113 and the bearing assembly 20 more stable. In the fourth embodiment of this application, the first inner circumferential line 1133 and the second inner circumferential line 1134 are located at the first hole segment 1131 and the second hole segment 1132, respectively.

[0057] In the four embodiments mentioned above, the two mounting through holes 1130 of the same transmission link 10 have the same hole shape to ensure that the transmission link 10 is subjected to uniform force.

[0058] Please see Figure 12 In this embodiment, the transmission connection portion 113 includes at least two detachable parts for connection with the transmission crankshaft 400. When the transmission connection portion 113 is assembled, it defines a mounting through hole 1130. In this embodiment, the bearing assembly 20 includes at least two bearing plates 21 for fitting into the mounting through hole 1130 for connection with the transmission crankshaft 400. When the transmission connection portion 113 and the bearing assembly 20 are assembled, at least two bearing assemblies 20 are arranged around the axis of the mounting through hole 1130, and at least two bearing plates 21 define a mating through hole 22.

[0059] This application provides a transmission linkage mechanism 100, which includes a transmission link 10 and a bearing assembly 20. The transmission link 10 includes a rotating connection portion 111 and two transmission connection portions 113, which are respectively connected to the same side of the rotating connection portion 111. The two transmission connection portions 113 are spaced apart from each other and define a clearance space 115. Each transmission connection portion 113 has a mounting through hole 1130 for the connecting rod journal 420 to pass through. In this embodiment, a bearing assembly 20 is provided in each mounting through hole 1130. The bearing assembly 20 has a mating through hole 22, and the connecting rod journal 420 passes through the mating through hole 22. In this embodiment, the outer peripheral side of the bearing assembly 20 contacts the inner surface of the mounting through hole 1130 to support the structure of the transmission connection portion 113. In this embodiment, the mounting through hole 1130 has a first inner circumferential line 1133 and a second inner circumferential line 1134. The first inner circumferential line 1133 is located between the second inner circumferential line 1134 and the clearance space 115. The inner diameter of the first inner circumferential line 1133 is larger than the inner diameter of the second inner circumferential line 1134.

[0060] In this embodiment, the side of the transmission connection 113 closest to the clearance space 115 is referred to as the inner side of the transmission connection 113, and the side of the transmission connection 113 furthest from the clearance space 115 is referred to as the outer side of the transmission connection 113. In this embodiment, the thickness of the inner side is smaller than that of the outer side. In this configuration, the plug 320 applies a force to the transmission connection 113. The structure of the transmission connection 113 causes the force to tend to act on the outer side, increasing the force on the outer side and reducing the force on the inner side, thus preventing excessive force on the inner side and deformation. The outer side, with its larger thickness, has a more stable structure to overcome the applied force. This configuration makes the structure of the transmission link 10 more stable, reducing the degree of deformation of the transmission link 10 and preventing the deformation of part of the transmission link 10 (forked link 11) from exceeding its elastic limit and becoming unrecoverable, thus protecting the structure of the transmission link 10.

[0061] In this application specification, certain terms are used to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to"; "generally" means that those skilled in the art can solve the technical problem within a certain margin of error and basically achieve the technical effect.

[0062] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0063] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or merely surface contact. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A transmission linkage characterized by, include: A transmission link, comprising a rotating connection portion and two transmission connection portions, wherein the two transmission connection portions are respectively connected to the rotating connection portion, the two transmission connection portions are spaced apart from each other and define a clearance space, and each transmission connection portion is provided with a mounting through hole; and A bearing assembly, wherein each of the mounting through holes is provided with a bearing assembly, the outer peripheral side of the bearing assembly contacts the inner surface of the mounting through hole, and the bearing assembly has a mating through hole; The mounting through hole has a first inner circumference and a second inner circumference. The first inner circumference is located between the second inner circumference and the clearance space, and the inner diameter of the first inner circumference is larger than the inner diameter of the second inner circumference.

2. The transmission linkage mechanism as described in claim 1, characterized in that, The inner diameter of the mounting through hole gradually increases along the direction close to the clearance space; the outer diameter of the bearing assembly gradually increases along the direction close to the clearance space.

3. The transmission linkage mechanism as described in claim 1, characterized in that, The mounting through hole includes a first hole segment and a second hole segment, wherein the second hole segment is located at the end of the first hole segment away from the clearance space; The minimum inner diameter of the first hole segment is greater than or equal to the maximum inner diameter of the second hole segment, and the inner surface of the first hole segment is not coplanar with the inner surface of the second hole segment.

4. The transmission linkage mechanism as described in claim 3, characterized in that, The inner diameter of the first hole gradually increases along the direction close to the clearance space, while the inner diameter of the second hole remains unchanged in the axial direction of the mounting through hole.

5. The transmission linkage mechanism as described in claim 3, characterized in that, The inner diameter of the first hole gradually increases along the direction close to the clearance space, and the inner diameter of the second hole gradually increases along the direction close to the clearance space.

6. The transmission linkage mechanism as described in claim 3, characterized in that, The inner diameter of the first hole segment remains unchanged in the axial direction of the mounting through hole, and the inner diameter of the second hole segment remains unchanged in the axial direction of the mounting through hole.

7. The transmission linkage mechanism as described in claim 1, characterized in that, The transmission link further includes a limiting part, and each transmission connection part is connected to at least one of the limiting parts; The limiting part is located at one end of the mounting through hole near the clearance space, and the bearing assembly is in contact with the limiting part.

8. An engine, characterized in that, include: Drive crankshaft; A drive cylinder, wherein the drive cylinder is disposed on one side of the transmission crankshaft; as well as According to any one of claims 1 to 7, the rotating connection portion of the transmission link is rotatably connected to the drive cylinder, the transmission crankshaft passes through the mating through holes of the two bearing assemblies, and the drive cylinder drives the transmission crankshaft to rotate through the transmission link mechanism.

9. A range extender system, characterized in that, include: A power generation device, comprising a stator mechanism and a rotor mechanism, wherein the rotor mechanism is rotatably disposed relative to the stator mechanism; as well as The starting device as described in claim 8, wherein the transmission crankshaft is drive-connected to the rotor mechanism.

10. A transport vehicle, characterized in that, include: Vehicle body; An energy storage system is installed on the vehicle body; as well as The range extender system as described in claim 9 is installed on the vehicle body and is electrically connected to the energy storage system.

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