A dual intermediate shaft drive system for a transmission and a working machine

Abstract

The present invention provides a gearbox dual-intermediate shaft drive system and an operating machine. The system includes: an engine, a clutch, a gearbox, a first coupler, a second coupler, a main drive transmission shaft, a drive shaft, a hydraulic oil pump, and a motor. The engine is connected to the gearbox via a clutch to transmit engine power to the gearbox. The gearbox is connected to the drive shaft via a main drive transmission shaft to provide power to the drive shaft. The gearbox is provided with dual intermediate shafts. The first coupler and the second coupler are respectively connected to the dual intermediate shafts of the gearbox. The couplers can be separated or combined to transmit power. The first coupler is connected to the motor via a transmission shaft to transmit motor power to the gearbox. The second coupler is connected to the hydraulic oil pump via a transmission shaft to provide power to the hydraulic oil pump. The gearbox of the present invention can output engine power and / or motor power through the second coupler and / or the gearbox output shaft, thereby simplifying the crane hybrid power system and reducing system cost. Electric energy does not need to be transferred twice, and efficiency loss is small.

Description

Technical Field

[0001] The present invention belongs to the technical field of hybrid power system operating machinery, and in particular relates to a gearbox dual intermediate shaft drive system and an operating machinery. Background Art

[0002] With the country's increasing emphasis on environmental protection, energy security, and oil shortages, the domestic new energy industry is booming, and energy conservation and environmental protection have become key development areas for truck cranes. Traditional truck cranes rely on engines to drive the vehicle for travel and loading operations. Due to the heavy weight of the crane, poor road conditions, and low engine load during loading operations, truck cranes have high fuel consumption rates. In recent years, technological advances have led to the emergence of hybrid power technology in truck cranes, which uses electricity when available and oil when not. This significantly reduces fuel consumption and has attracted widespread attention from users. However, hybrid power technology for cranes is primarily based on existing passenger and commercial vehicle configurations, lacking specific improvements for crane loading operations. This results in complex and costly hybrid crane technology, making it difficult for users to quickly recoup their purchase costs, hindering the widespread adoption of the product.

[0003] To solve the above problems, the present invention designs a hybrid power system driven by a dual intermediate shaft of a gearbox. It does not require changes to the traditional fuel crane transmission system, and realizes motor-driven vehicle driving and vehicle loading operations, reducing the complexity and cost of the hybrid power system.

[0004] Hybrid systems for existing cranes Figure 1 ,like Figure 2 shown.

[0005] Figure 1 It is an extended-range configuration with a controller as the control core. The engine drives the generator to generate electricity to charge the battery. The battery drives motor 1 and motor 2. Motor 1 drives the vehicle to travel, and motor 2 drives on-board operations.

[0006] Figure 2 In the P2 configuration, the engine is connected to the motor rotor via a clutch, which in turn is connected to the transmission input shaft. The engine and motor can drive the transmission jointly or independently. When the chassis is in motion, the power take-off (PTO) and oil pump are not engaged, and the engine power passes through the clutch and transmission to drive the axles. When operating on the vehicle, the transmission output shaft is stationary, the PTO is engaged, and engine power passes through the clutch, transmission, and PTO to drive the oil pump, which in turn drives the crane on the vehicle for operations such as telescoping, luffing, and lifting.

[0007] The existing hybrid power system has the following disadvantages:

[0008] Figure 1 Configuration:

[0009] (1) The engine generates electricity through the generator to supply the chassis for driving or on-board operation. The secondary conversion of electrical energy results in a large loss of efficiency.

[0010] (2) Two independent motors are required for getting on and off the vehicle, which makes the system complex and costly.

[0011] Figure 2 Configuration:

[0012] (1) The motor rotor is connected to the gearbox input shaft. The motor rotor's rotational inertia will affect the gearbox shifting. Usually, it can only be connected to an automatic gearbox, which results in high system cost.

[0013] (2) The motor is located between the gearbox and the engine. The traditional system is longer and the entire machine layout needs to be lengthened, which affects the crane's passing performance. Summary of the Invention

[0014] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a gearbox dual intermediate shaft drive system and an operating machine, simplify the crane hybrid power system, and reduce system costs.

[0015] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0016] The present invention provides a gearbox dual intermediate shaft drive system, comprising: an engine, a clutch, a gearbox, a first coupler, a second coupler, a main drive transmission shaft, a drive shaft, a hydraulic oil pump and a motor;

[0017] The engine is connected to the gearbox via a clutch, so that the engine power is transmitted to the gearbox;

[0018] The gearbox is connected to the drive shaft via the main drive shaft to provide power to the drive shaft;

[0019] The gearbox is provided with a double intermediate shaft, and coupler 1 and coupler 2 are respectively connected to the double intermediate shafts of the gearbox. The couplers can be separated or combined to transmit power.

[0020] The coupler 1 is connected to the motor via a transmission shaft to transmit the motor power to the gearbox;

[0021] The second coupler is connected to the hydraulic oil pump via a transmission shaft to provide power for the hydraulic oil pump;

[0022] The gearbox can output the engine power and / or motor power through coupler 2 and / or the gearbox output shaft.

[0023] The benefits of this setup are: the engine directly powers the chassis for driving and loading operations, eliminating the need for secondary transfers and minimizing efficiency losses. Loading and unloading operations no longer require two separate motors, driven by the transmission's dual intermediate shafts. This eliminates the need to modify the existing transmission system, resulting in a simple, reliable, and cost-effective structure. The motor is connected to the transmission's dual intermediate shafts. During gear shifts, the motor's rotor is driven by the transmission's output shaft, driven in accordance with vehicle speed without affecting the main gearbox's synchronous speed. The motor is no longer located between the transmission and engine, shortening the traditional system and eliminating the need to lengthen the overall crane layout, thus maintaining crane maneuverability.

[0024] Furthermore, the second coupler includes a second transmission mechanism and a second disengagement mechanism, the transmission mechanism is used to transmit the intermediate shaft power to the coupler, and the disengagement mechanism is used to disengage the coupler from the intermediate shaft;

[0025] The coupler includes a transmission mechanism and a disengagement mechanism. The transmission mechanism is used to transmit the intermediate shaft power to the coupler, and the disengagement mechanism is used to disengage the coupler from the intermediate shaft.

[0026] Furthermore, the gearbox includes a main box input shaft, a main box gear set, a shift mechanism, a main box output shaft, a sub-box gear set 1, a sub-box shift mechanism, a sub-box gear set 2, a sub-box intermediate shaft, and a gearbox output shaft;

[0027] The main box input shaft is connected to the clutch to transmit the engine input power;

[0028] The driven gear of the main gearbox gear set is loosely mounted on the output shaft of the main gearbox, and the driving gear is spline-connected to the intermediate shaft of the main gearbox to transmit the input shaft power.

[0029] The shift mechanism can realize the connection and separation of the driven gear of the main box gear set and the main box output shaft, and is used to transmit or interrupt the power transmission of the main box gear set and change the transmission speed ratio of the main box;

[0030] The driving gear of the auxiliary box gear set is connected to the main box output shaft, and the driven gear is connected to the auxiliary box intermediate shaft, which is used to transmit the power of the main box to the auxiliary box intermediate shaft;

[0031] The driving gear of the auxiliary box gear set 2 is connected to the auxiliary box intermediate shaft, and the driven gear is connected to the gearbox output shaft idler sleeve, which is used to transmit the main box power to the output shaft;

[0032] The auxiliary gearbox shift mechanism can realize the connection and separation of the second driven gear of the auxiliary gearbox gear set and the output shaft of the gearbox, or realize the connection and separation of the output shaft of the main gearbox and the output shaft of the gearbox, thereby realizing the change of the auxiliary gearbox transmission speed ratio;

[0033] The gearbox output shaft is used to transmit the gearbox power to the main drive shaft;

[0034] When the chassis is moving, it has two power transmission routes: the engine and the motor;

[0035] When the engine working chassis is running, the clutch is engaged, and the engine power is transmitted to the drive shaft through the clutch, gearbox input shaft, main box gear gear set, main box output shaft, auxiliary box gear set 1, auxiliary box gear set 2, and gearbox output shaft to drive the vehicle.

[0036] When the motor working chassis is running, the transmission mechanism is engaged, and the motor power is transmitted to the gearbox output shaft through the transmission mechanism, the auxiliary box intermediate shaft, and the auxiliary box gear set to drive the vehicle.

[0037] Furthermore, when the transmission is in the low gear range, the auxiliary box shift mechanism causes the auxiliary box gear set 2 to engage with the transmission output shaft, and the motor transmits power to the transmission output shaft through the transmission mechanism 1, the auxiliary box intermediate shaft, and the auxiliary box gear set 2;

[0038] When the gearbox is in the high-speed range, the auxiliary gearbox shift mechanism combines the gearbox output shaft with the main gearbox output shaft, the auxiliary gearbox gear set 2 and the gearbox output shaft are free, and no power is transmitted. The power motor transmits power to the gearbox output shaft through the transmission mechanism 1, the auxiliary gearbox intermediate shaft, and the auxiliary gearbox gear set 1.

[0039] Furthermore, the on-vehicle operation has two power transmission routes: the engine and the motor.

[0040] When the engine is working and the vehicle is being operated, the second transmission mechanism is engaged, the auxiliary box shift mechanism is in the neutral position, the gearbox output shaft does not output power, and the engine power is transmitted to the hydraulic oil pump through the clutch, gearbox input shaft, gearbox gear set, auxiliary box intermediate shaft, and transmission mechanism 2, thereby driving the vehicle to perform the operation.

[0041] When the motor is working on the vehicle, transmission mechanism 1 and transmission mechanism 2 are combined, the auxiliary box shift mechanism is in the neutral position, the gearbox output shaft does not output power, and the motor power is transmitted to the hydraulic oil pump through transmission mechanism 1, the gearbox auxiliary box intermediate shaft, the auxiliary box gear set, another gearbox auxiliary box intermediate shaft, and transmission mechanism 2, thereby driving the vehicle to perform the operation.

[0042] Furthermore, when the transmission mechanism is driven purely by the engine, the disengagement mechanism separates the transmission mechanism, and the motor does not rotate along with the intermediate shaft of the gearbox.

[0043] Furthermore, the gearbox is a traditional manual gearbox.

[0044] The effect of the above settings: the motor is connected to the double intermediate shafts of the gearbox. When the gearbox shifts, the motor rotor is driven by the gearbox output shaft, which is related to the vehicle speed and does not affect the synchronization of the main box gear speed. It has low shifting requirements and can adapt to manual transmissions.

[0045] Furthermore, the gearbox output shaft is a reinforced shaft, and the gearbox bearings are reinforced bearings.

[0046] In a traditional dual-intermediate shaft configuration, when torque is transmitted to the transmission output shaft, the output shaft gears are not subject to bending moments because the torque on the auxiliary transmission intermediate shaft gears is the same. However, when the motor transmits torque to drive the chassis, the torque on the intermediate shaft at the motor connection end is greater than that on the other intermediate shaft in the auxiliary transmission, causing bending moments on the output shaft. Therefore, the output shaft and its bearings need to be strengthened.

[0047] Furthermore, the motor is connected to the power battery and the external power supply through an all-in-one controller.

[0048] In a second aspect, the present invention provides a working machine comprising the transmission dual intermediate shaft drive system as described in the first aspect.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] (1) The motor is driven by the dual intermediate shafts of the gearbox, without changing the existing transmission system, and the structure is simple and reliable;

[0051] (2) The motor is connected to the double intermediate shaft of the gearbox. When the gearbox shifts, the motor rotor is driven by the gearbox output shaft, which is related to the vehicle speed and does not affect the synchronization of the main gearbox speed. It has low shifting requirements and can adapt to manual transmissions.

[0052] (3) The chassis driving and boarding operations are powered by the same motor, resulting in low system cost;

[0053] (4) When the chassis is driving, the motor adjusts the engine output torque, the engine operates with high efficiency and low fuel consumption; when the vehicle is being operated, the motor can drive the vehicle alone, with zero fuel consumption;

[0054] (5) When the chassis is driving, the transmission mechanism of the hydraulic oil pump is separated, and there is no additional load consumption during driving; when the engine drives the vehicle, the transmission mechanism of the motor is separated, the motor does not rotate with it, there is no reverse electromotive force, and it is safe to use;

[0055] (6) When the vehicle brakes, the motor recovers energy through the auxiliary box intermediate shaft, with a short transmission path and high recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 . Schematic diagram of existing hybrid power system;

[0057] Figure 2 . Schematic diagram of existing hybrid power system;

[0058] Figure 3 . Schematic diagram of the hybrid system of the present invention;

[0059] Figure 4 A schematic diagram of power transmission of the present invention;

[0060] Figure 5 This is a power transmission diagram of the chassis of the present invention in high-speed hybrid mode;

[0061] Figure 6 This is the power transmission diagram of the chassis driving low-range hybrid mode of the present invention;

[0062] Figure 7 It is the power transmission diagram of the hybrid mode of the vehicle operation of the present invention.

[0063] In the figure: 1. Engine; 2. Clutch; 3. Gearbox; 4. Coupler 1; 5. Coupler 2; 6. Drive shaft; 7. Hydraulic oil pump; 8. Main drive shaft; 9. Drive shaft; 10. Power battery; 11. All-in-one controller; 12. Motor; 13. External power supply.

[0064] 201. Main-box input shaft; 202. Main-box gear position gear set; 203. Shift mechanism (which can connect or disconnect the shift gear to the output shaft); 204. Auxiliary-box gear set 1; 205. Auxiliary-box shift mechanism; 206. Auxiliary-box gear set 2; 207. Disengagement mechanism 2; 208. Transmission mechanism 2; 211. Gearbox output shaft; 212. Transmission mechanism 1; 213. Disengagement mechanism 1; 214. Auxiliary-box intermediate shaft; 215. Main-box output shaft. DETAILED DESCRIPTION

[0065] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0066] In the description of this embodiment, it should be noted that when terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing this embodiment and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on this embodiment.

[0067] Example 1:

[0068] This embodiment provides a gearbox dual intermediate shaft drive system, such as Figure 3As shown, it includes: an engine, a clutch, a gearbox, a coupler 1, a coupler 2, a drive shaft, a hydraulic oil pump and a motor; the engine is connected to the gearbox through the clutch to transmit the engine power to the gearbox; the gearbox is connected to the drive shaft through the main drive transmission shaft to provide power for the drive shaft; the gearbox is provided with a double intermediate shaft, and the coupler 1 and the coupler 2 are respectively connected to the double intermediate shafts of the gearbox, and the couplers can be separated or combined for transmitting power; the coupler 1 is connected to the motor through the transmission shaft to transmit the motor power to the gearbox; the coupler 2 is connected to the hydraulic oil pump through the transmission shaft to provide power for the hydraulic oil pump; the gearbox can output the engine power and / or motor power through the coupler 2 and / or the gearbox output shaft.

[0069] The engine directly powers the chassis for driving and loading operations, eliminating the need for secondary transfers and minimizing efficiency losses. Loading and unloading operations also eliminate the need for two separate motors. Instead, the motors are driven by the transmission's dual intermediate shafts, eliminating the need to modify the existing drivetrain. This results in a simple, reliable, and cost-effective structure. The motors are connected to the transmission's dual intermediate shafts. During gear shifts, the motor rotor is driven by the transmission's output shaft, driven in a manner related to vehicle speed without affecting the main gearbox's synchronous speed. The motor is no longer located between the transmission and engine, shortening the traditional system and eliminating the need to lengthen the overall crane layout, thus maintaining crane maneuverability.

[0070] The motor of this embodiment is connected to the power battery and the external power supply through an all-in-one controller.

[0071] When the main transmission shifts, it is a manual operation by the driver. At this time, the motor rotor is driven by the transmission output shaft, which is related to the vehicle speed and has no effect on the driver's shifting. When the auxiliary transmission shifts, it is a pneumatic operation. At this time, the inertia of the motor rotor will affect the synchronous speed of the gears.

[0072] The auxiliary transmission has only two gears: high and low. The motor and transmission output shaft speeds are fixed at two ratios, i1 or i2. During driving, the body controller constantly monitors the motor and transmission output shaft speeds. If the vehicle is in high gear, the speed ratio is i1. If the body controller detects a speed ratio different from i1, indicating that the driver is shifting from high to low gear, the motor adjusts its speed based on the output shaft speed to achieve a speed ratio of i2. This provides speed synchronization assistance for smoother auxiliary transmission shifts. When driving in low gear, the motor and transmission output shaft speeds have a speed ratio of i2. If the body controller detects a speed ratio different from i2, indicating that the driver is shifting from low to high gear, the motor adjusts its speed based on the output shaft speed to achieve a speed ratio of i1. This provides speed synchronization assistance for smoother auxiliary transmission shifts.

[0073] Specifically, the gearbox of this embodiment adopts a common structure, including a main box input shaft, a main box gear set, a shift mechanism, a main box output shaft, an auxiliary box gear set 1, an auxiliary box shift mechanism, an auxiliary box gear set 2, an auxiliary box intermediate shaft, and a gearbox output shaft;

[0074] The main box input shaft is connected to the clutch to transmit the engine input power;

[0075] The driven gear of the main gear gear set (there are several gear sets for each gear) is loosely mounted on the output shaft of the main gearbox, and the driving gear is spline-connected to the intermediate shaft of the main gearbox to transmit the power of the input shaft;

[0076] The shift mechanism can realize the connection and separation of the driven gear of the main box gear set and the main box output shaft, and is used to enable the main box gear set to transmit or interrupt power transmission and change the main box transmission speed ratio.

[0077] The driving gear of the auxiliary box gear set is connected to the main box output shaft, and the driven gear is connected to the auxiliary box intermediate shaft, which is used to transmit the power of the main box to the auxiliary box intermediate shaft;

[0078] The driving gear of the auxiliary box gear set 2 is connected to the auxiliary box intermediate shaft, and the driven gear is connected to the empty sleeve of the gearbox output shaft, which is used to transmit the main box power to the main box output shaft.

[0079] The auxiliary box shift mechanism can realize the connection and separation of the second driven gear of the auxiliary box gear set and the output shaft of the transmission, or realize the connection and separation of the output shaft of the main box of the transmission and the output shaft of the transmission, thereby realizing the change of the auxiliary box transmission speed ratio.

[0080] The transmission output shaft is used to transmit the transmission power to the main drive shaft.

[0081] The main drive transmission shaft is connected to the drive shaft.

[0082] The second coupler includes a second transmission mechanism and a second disengagement mechanism; the first coupler includes a first transmission mechanism and a first disengagement mechanism.

[0083] Implementation principle: The working principle of the present invention is as follows Figure 3 As shown, the engine is connected to the transmission via a clutch. The transmission is a traditional manual transmission. Couplers 1 and 2 are connected to the transmission's dual intermediate shafts, respectively. The couplers can be separated or engaged. Coupler 1 is connected to the motor via a drive shaft, while coupler 2 is connected to the hydraulic oil pump via a drive shaft. The transmission output shaft is connected to the main drive shaft, which in turn is connected to the drive shaft. The motor is connected to the power battery and external power supply via an all-in-one controller. The power from the external power supply or battery drives the motor through the all-in-one controller.

[0084] The coupler can be a power take-off of an existing gearbox or a custom developed one. Figure 4The gearbox structure introduces the power transmission route in detail, and the transmission route of this patent is not limited to this structure.

[0085] When the chassis is moving, there are two power transmission routes: the engine and the motor.

[0086] When the engine is working, the driver puts the transmission into a certain gear, engages the clutch, and the engine power is transmitted to the drive shaft through the clutch, transmission input shaft, transmission gear set, and transmission output shaft to drive the vehicle.

[0087] When the motor is working, the transmission mechanism is engaged, and the motor power is transmitted to the gearbox output shaft through the transmission mechanism, the auxiliary box intermediate shaft, and the auxiliary box gear set to drive the vehicle or recover energy.

[0088] The two transmission routes work together to achieve three chassis drive modes: pure engine drive, pure electric motor drive, and hybrid drive. In pure engine drive, once the transmission mechanism is disengaged, the motor does not rotate with the gearbox intermediate shaft, and the motor has no reverse electromotive force, making it safe to use.

[0089] In order to facilitate the understanding of the motor driving process, this patent is based on Figure 6-7 Structural introduction Power transmission process: When the gearbox is in the low gear range, the auxiliary box shift mechanism combines the auxiliary box gear set 2 with the gearbox output shaft, and the motor transmits power to the gearbox output shaft through the transmission mechanism 1, the auxiliary box intermediate shaft, and the auxiliary box gear set 2; when the gearbox is in the high gear range, the auxiliary box shift mechanism combines the gearbox output shaft with the main box output shaft, the auxiliary box gear set 2 and the gearbox output shaft are free and no power is transmitted. The power motor transmits power to the gearbox output shaft through the transmission mechanism 1, the auxiliary box intermediate shaft, and the auxiliary box gear set 1.

[0090] The on-board operation has two power transmission routes: engine and motor.

[0091] When the engine is working, the second transmission mechanism is engaged, the main box is placed in a certain gear, the auxiliary box shift mechanism is in the neutral position, the gearbox output shaft does not output power, and the engine power is transmitted to the hydraulic oil pump through the clutch, gearbox input shaft, gearbox gear set, auxiliary box intermediate shaft, and transmission mechanism 2, thereby driving the vehicle to perform telescopic, boom lengthening, lifting and other operations.

[0092] When the motor is working, transmission mechanism 1 and transmission mechanism 2 are combined, the auxiliary box shift mechanism is in the neutral position, the gearbox output shaft does not output power, and the motor power is transmitted to the hydraulic oil pump through transmission mechanism 1, the gearbox auxiliary box intermediate shaft, the auxiliary box gear set, the gearbox auxiliary box intermediate shaft (the other one), and transmission mechanism 2, thereby driving the vehicle to perform telescopic, boom-changing, lifting and other operations.

[0093] The two transmission routes cooperate with each other to realize three modes of vehicle operation: pure engine drive, pure motor drive and hybrid drive. Figure 7 shown.

[0094] During pure electric operation, the clutch is disengaged, the main box of the transmission is placed in a certain gear, and the auxiliary box gear set drives all the gears in the main box to rotate through the main box output shaft, thereby avoiding idling of the main box output shaft causing poor lubrication and damage to the transmission.

[0095] Example 2:

[0096] This embodiment provides a working machine, including the gearbox dual intermediate shaft drive system as described in the first embodiment.

[0097] The undisclosed parts of this specification are prior art.

[0098] 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 quantity of the technical features being referred to. Thus, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0099] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0100] In 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. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0101] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these 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 any one or more embodiments or examples.

[0102] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A gearbox dual intermediate shaft drive system, characterized in that: include: Engine, clutch, gearbox, coupler 1, coupler 2, drive shaft, hydraulic oil pump and motor; The engine is connected to the gearbox via a clutch, so that the engine power is transmitted to the gearbox; The gearbox is connected to the drive shaft via the main drive shaft to provide power to the drive shaft and drive the chassis to travel; The gearbox is provided with a double intermediate shaft, and coupler 1 and coupler 2 are respectively connected to the two intermediate shafts of the gearbox, and the couplers can be separated or combined for transmitting power; The coupler 1 is connected to the motor to transmit the motor power to the gearbox; The second coupler is connected to the hydraulic oil pump via a transmission shaft to provide power to the hydraulic oil pump to drive the vehicle operation; The gearbox is capable of outputting the engine power and / or motor power through coupler 2 and / or the gearbox output shaft; The second coupler includes a second transmission mechanism and a second disengagement mechanism, wherein the transmission mechanism is used to transmit the intermediate shaft power to the coupler, and the disengagement mechanism is used to disengage the coupler from the intermediate shaft; The coupler 1 includes a transmission mechanism 1 and a disengagement mechanism 1, wherein the transmission mechanism is used to transmit the intermediate shaft power to the coupler, and the disengagement mechanism is used to disengage the coupler from the intermediate shaft; The gearbox includes a main box input shaft, a main box gear set, a shift mechanism, a main box output shaft, a sub-box gear set 1, a sub-box shift mechanism, a sub-box gear set 2, a sub-box intermediate shaft, and a gearbox output shaft; When the chassis is moving, it has two power transmission routes: the engine and the motor; When the engine working chassis is running, the clutch is engaged, and the engine power is transmitted to the drive shaft through the clutch, the gearbox input shaft, the main box gear gear set, the main box output shaft, the auxiliary box gear set 1, the auxiliary box gear set 2, and the gearbox output shaft to drive the vehicle; When the motor chassis is running, the transmission mechanism 1 is engaged, and the motor power is transmitted to the gearbox output shaft through the transmission mechanism 1, the auxiliary box intermediate shaft, and the auxiliary box gear set to drive the vehicle to move; The motor is connected to the power battery and the external power supply through an all-in-one controller.

2. The gearbox dual intermediate shaft drive system according to claim 1, characterized in that: When the gearbox is in the low gear range, the auxiliary gearbox shift mechanism connects the auxiliary gearbox gear set 2 with the gearbox output shaft, and the motor transmits power to the gearbox output shaft through the transmission mechanism 1, the auxiliary gearbox intermediate shaft, and the auxiliary gearbox gear set 2; When the gearbox is in the high-speed range, the auxiliary gearbox shift mechanism combines the gearbox output shaft with the main gearbox output shaft, the auxiliary gearbox gear set 2 and the gearbox output shaft are free, and no power is transmitted. The power motor transmits power to the gearbox output shaft through the transmission mechanism 1, the auxiliary gearbox intermediate shaft, and the auxiliary gearbox gear set 1.

3. The transmission dual intermediate shaft drive system according to claim 1, characterized in that: The onboard operation has two power transmission routes: engine and motor; When the engine is running and the vehicle is being operated, the second transmission mechanism is engaged, the auxiliary box shift mechanism is in the neutral position, the gearbox output shaft does not output power, and the engine power is transmitted to the hydraulic oil pump through the clutch, gearbox input shaft, gearbox gear set, auxiliary box intermediate shaft, and transmission mechanism 2, thereby driving the vehicle to perform the operation; When the motor is working on the vehicle, transmission mechanism 1 and transmission mechanism 2 are combined, the auxiliary box shift mechanism is in the neutral position, the gearbox output shaft does not output power, and the motor power is transmitted to the hydraulic oil pump through transmission mechanism 1, the gearbox auxiliary box intermediate shaft, the auxiliary box gear set, another gearbox auxiliary box intermediate shaft, and transmission mechanism 2, thereby driving the vehicle to perform the operation.

4. The transmission dual intermediate shaft drive system according to claim 1, characterized in that: When the engine is driven purely, the disengagement mechanism separates the transmission mechanism, and the motor does not rotate along with the gearbox intermediate shaft.

5. The transmission dual intermediate shaft drive system according to claim 1, characterized in that: The gearbox is a traditional manual gearbox.

6. The transmission dual intermediate shaft drive system according to claim 5, characterized in that: The gearbox output shaft is a reinforced shaft, and the gearbox bearings are reinforced bearings.

7. A working machine, characterized in that: It comprises a gearbox dual intermediate shaft drive system as described in any one of claims 1-6.

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