Uninterrupted full-power power takeoff and vehicle

Abstract

The utility model relates to the technical field of vehicle accessories, and provides an uninterrupted full-power power takeoff and a vehicle. The uninterrupted full-power power takeoff comprises an input shaft used for being connected with a crankshaft of an engine, and the end, away from the crankshaft, of the input shaft is rotationally connected with a flywheel used for being connected with a vehicle clutch; the output shaft is in transmission connection with the input shaft through a gear set, and the output end of the output shaft is connected with load equipment; the shell, the input shaft and the output shaft are arranged in the shell, the shell is filled with lubricating oil, the end, close to the crankshaft, of the input shaft extends out of the shell, and the end, connected with load equipment, of the output shaft extends out of the shell. According to the utility model, uninterrupted operation can be carried out in the running process of the vehicle, so that the load equipment can continuously work without being influenced by the running state of the vehicle, the maximum power of the engine can be obtained, and the load equipment is started to run at the maximum power while the running performance of the vehicle is not influenced, so that the maximum energy utilization is realized.

Description

Technical Field

[0001] This invention relates to the field of vehicle parts technology, and more specifically, to an uninterrupted full-power power take-off unit and a vehicle. Background Technology

[0002] As a key component of a vehicle's power transmission system, the power take-off (PTO) plays a crucial role in transmitting the mechanical power from the engine or transmission to auxiliary equipment. It is widely used in specialized vehicles such as fire trucks and concrete pump trucks. Full-power PTOs, capable of outputting the full power of the vehicle's engine during power transmission to meet high-load, continuous power demands, are considered core devices for improving vehicle operating efficiency and versatility.

[0003] In related technologies, the installation locations of full-power power take-offs (PTOs) are mainly concentrated in two forms: between the clutch housing and the gearbox, or in the middle of the driveshaft. PTOs installed between the clutch housing and the gearbox are typically mounted on the gearbox input shaft and equipped with a constantly meshing gear. When using them, the clutch must be disengaged and the gearbox put into neutral before the PTO function can be activated. This type of structure is commonly found in high-specification fire trucks and can achieve a relatively high power output. Driveshaft-type PTOs achieve power take-off by automatically cutting off power from the downstream section of the driveshaft. This requires the gearbox to be in direct drive and is mostly used in specific working conditions such as concrete pump trucks. However, both of these types of PTOs are limited in their application scenarios; they usually require the vehicle to be stationary and cannot achieve power take-off while moving, greatly affecting work efficiency. Summary of the Invention

[0004] The problem solved by this invention is how to achieve uninterrupted power take-off from a full-power PTO.

[0005] To address the above problems, the present invention provides an uninterrupted full-power power take-off unit and a vehicle.

[0006] In a first aspect, the present invention provides an uninterrupted full-power power take-off (PTO), comprising:

[0007] An input shaft is used to connect to the crankshaft of an engine. A flywheel is rotatably connected to the end of the input shaft away from the crankshaft. The flywheel is used to connect to the vehicle clutch.

[0008] An output shaft is used to drive the input shaft through a gear set, and the output end of the output shaft is connected to the load device.

[0009] The housing contains the input shaft and the output shaft, which are provided with lubricating oil. The end of the input shaft near the crankshaft extends out of the housing, and the end of the output shaft used for connecting to the load device extends out of the housing.

[0010] Optionally, the end of the input shaft used for connecting to the crankshaft is provided with a stop for positioning and abutting the crankshaft.

[0011] Optionally, the input shaft is a hollow cylindrical shape with bolt holes, and the output shaft is bolted to the crankshaft through the bolt holes.

[0012] Optionally, the flywheel has a groove on its end face facing the vehicle clutch for positioning the vehicle's built-in clutch.

[0013] Optionally, the flywheel has a threaded hole on its end face facing the vehicle clutch, and the flywheel is threadedly connected to the vehicle clutch through the threaded hole.

[0014] Optionally, the output shaft includes a first output shaft and a second output shaft, and the first output shaft and the second output shaft are respectively connected to the input shaft via gear sets.

[0015] Optionally, the uninterruptible full-power take-off further includes a pulley, the load device includes a generator, the driving pulley of the pulley is connected to the first output shaft, and the driven pulley of the pulley is connected to the generator.

[0016] Optionally, the load device includes a hydraulic clutch connected to the second output shaft.

[0017] Optionally, the uninterrupted full-power take-off unit further includes a first rotating shaft that is connected to the output shaft and the input shaft respectively via a gear set. The first rotating shaft is used to connect to a hydraulic pump to deliver lubricating oil inside the housing to the hydraulic clutch.

[0018] In a second aspect, the present invention provides a vehicle including an uninterrupted full-power power take-off as described in the first aspect.

[0019] The beneficial effects of the uninterrupted full-power power take-off (PTO) and vehicle of the present invention are as follows: The input shaft and output shaft are housed within a housing, and lubricating oil is injected into the housing to provide protection and rotational lubrication for the input shaft, output shaft, and the gear set connecting them. One end of the input shaft extends through the housing and connects to the engine crankshaft, while the other end connects to a flywheel located outside the housing. The flywheel is connected to the vehicle clutch. The output shaft is driven by gears and its output end is connected to the load equipment (e.g., a water pump on a sprinkler truck, a sweeping device on a sweeper truck, etc.). When the vehicle is in motion, the engine runs, and the engine crankshaft drives the input shaft to rotate. The vehicle clutch and flywheel are engaged, and the flywheel rotates with the rotation of the input shaft. This allows the vehicle to change gears, such as in a gearbox, via the vehicle clutch, thus enabling vehicle movement. Simultaneously, the gear set, along with the rotation of the input shaft, drives the output shaft to rotate, providing operating power to the load equipment. When the vehicle needs to shift gears, brake, or temporarily disconnect power from the transmission (e.g.), the driver depresses the clutch pedal. The clutch friction plates disengage, cutting off the power connection between the flywheel and the transmission, and the vehicle stops moving. However, because the input shaft of the power take-off (PTO) is directly connected to the engine crankshaft, its output shaft's power output remains unaffected. This embodiment of the uninterrupted full-power PTO allows for continuous operation while the vehicle is in motion, enabling the load equipment to operate continuously regardless of the vehicle's driving status. Furthermore, it can utilize the engine's maximum power, starting the load equipment at maximum power without impacting vehicle performance, thus maximizing energy utilization. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the uninterrupted full-power power take-off (OPT) device according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the installation structure of the uninterrupted full-power power take-off unit according to an embodiment of the present invention;

[0022] Figure 3 This is a side sectional view of the uninterrupted full-power power take-off (PTO) installation structure according to an embodiment of the present invention;

[0023] Figure 4 for Figure 1 Cross-sectional view of GG;

[0024] Figure 5 for Figure 1 Cross-sectional view of FF in the middle;

[0025] Figure 6 for Figure 1 Side view sectional view of region A in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Input shaft; 11-First gear; 12-5; 2-Output shaft; 21-First output shaft; 211-Second gear; 22-Second output shaft; 221-Third gear; 3-Flywheel; 31-Groove; 32-Threaded hole; 4-Flywheel housing; 41-Flywheel disc; 5-Vehicle clutch; 6-Housing; 7-Pulley; 8-Generator; 9-Hydraulic clutch; 1.1-Second rotating shaft; 1.11-Second rotating gear; 1.2-Hydraulic pump; 1.3-First rotating shaft; 1.31-First rotating gear; 1.4-First intermediate shaft; 1.41-First intermediate gear; 1.5-Second intermediate shaft; 1.51-Second intermediate gear; 1.6-Gearbox; 1.7-Bearing; 1.8-Oil filter. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0029] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0030] It should be noted that the terms "one" and "more" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0031] like Figures 1 to 6 As shown, an embodiment of the present invention provides an uninterrupted full-power power take-off (OPT) device, comprising:

[0032] An input shaft 1 is used to connect to the crankshaft of an engine. A flywheel 3 is rotatably connected to the end of the input shaft 1 away from the crankshaft. The flywheel 3 is used to connect to the vehicle clutch 5.

[0033] Output shaft 2 is used to drive the input shaft 1 through a gear set, and the output end of the output shaft 2 is connected to the load device.

[0034] The housing 6 contains the input shaft 1 and the output shaft 2. Lubricating oil is provided inside the housing 6. The end of the input shaft 1 near the crankshaft extends out of the housing 6, and the end of the output shaft 2 used for connecting to the load device extends out of the housing 6. It should be noted that, as... Figure 5 As shown, when the input shaft 1 extends out of the housing 6, a bearing 1.7 is provided between them to ensure the normal rotation of the input shaft 1; when the output shaft 2 extends out of the housing 6, a flange interface is provided between them to ensure the normal rotation of the output shaft 2 and its connection with the load device.

[0035] Specifically, the structure of an uninterrupted full-power power take-off (OPT) during installation, such as... Figure 2 and Figure 3 As shown, the engine crankshaft is enclosed by a flywheel housing 4 and a flywheel disc 41, and is connected to one end of the input shaft 1. The other end of the input shaft 1 is connected to a flywheel 3, which is connected to a vehicle clutch 5. The end face of the vehicle clutch 5 facing away from the flywheel 3 is connected to a gearbox 1.6.

[0036] In this embodiment, the input shaft 1 and output shaft 2 are housed within the housing 6, and lubricating oil is injected into the housing 6 to provide protection and rotational lubrication for the input shaft 1, output shaft 2, and the gear set connecting them. One end of the input shaft 1 extends through the housing 6 and connects to the engine crankshaft, while the other end connects to a flywheel 3 located outside the housing. The flywheel 3 is connected to the vehicle clutch 5. The output shaft 2 is connected to the input shaft 1 via gears, and its output end is connected to the load equipment (e.g., a water pump on a sprinkler truck, a sweeping device on a sweeper truck, etc.). When the vehicle is in motion, the engine runs, and the engine crankshaft drives the input shaft 1 to rotate. The vehicle clutch 5 and the flywheel 3 are engaged, and the flywheel 3 rotates with the rotation of the input shaft 1. This allows the vehicle to move by changing gears, such as in a gearbox, via the vehicle clutch 5. Simultaneously, the gear set, along with the rotation of the input shaft 1, drives the output shaft 2 to rotate, providing operating power to the load equipment. When the vehicle needs to shift gears, brake, or temporarily disconnect power from the transmission (e.g.), the driver depresses the clutch pedal. The clutch friction plates of clutch 5 disengage, cutting off the power connection between flywheel 3 and the transmission, and the vehicle stops moving. However, because the input shaft 1 of the power take-off (PTO) is directly connected to the engine crankshaft, the power output of its output shaft 2 is unaffected. This embodiment of the uninterrupted full-power PTO allows for continuous operation while the vehicle is in motion, enabling the load equipment to operate continuously regardless of the vehicle's driving status. It also allows the PTO to obtain the engine's maximum power, starting the load equipment at maximum power without affecting the vehicle's driving performance, thus maximizing energy utilization.

[0037] Optionally, the end of the input shaft 1 used for connecting with the crankshaft is provided with a stop 12 for positioning and abutting the crankshaft.

[0038] Specifically, such as Figure 3 and Figure 5 As shown, a stop 12 is provided on the end of the input shaft 1 that is connected to the crankshaft. In this embodiment, the stop 12 is a stop boss corresponding to the crankshaft stop, which is used to position the engine crankshaft, improve the connection efficiency between the input shaft 1 and the engine crankshaft, and avoid the situation where the crankshaft and the input shaft 1 are misaligned due to the visual obstruction of the flywheel housing 4 and the flywheel disc 41.

[0039] Optionally, the input shaft 1 is a hollow cylindrical shape, and bolt holes are provided on the input shaft 1. The output shaft 2 is bolted to the crankshaft through the bolt holes.

[0040] Specifically, such as Figure 1 (a) and Figure 5 As shown, the input shaft 1 is a hollow cylindrical shape, which facilitates the connection of the engine crankshaft from the inside of the input shaft 1, thereby improving installation efficiency.

[0041] Optionally, the flywheel 3 has a groove 31 on its end face facing the vehicle clutch 5 for positioning the vehicle's built-in clutch.

[0042] Specifically, the flywheel 3 is used to be fixedly connected to the vehicle clutch 5 and to transmit the power obtained from the input shaft 1 to the vehicle clutch 5. For example... Figure 1 As shown in (b), a groove 31 is provided in the middle of the flywheel 3 for positioning the vehicle clutch 5, so as to improve the installation and connection efficiency of the flywheel 3 and the vehicle clutch 5.

[0043] Optionally, the flywheel 3 has a threaded hole 32 on its end face facing the vehicle clutch 5, and the flywheel 3 is threadedly connected to the vehicle clutch 5 through the threaded hole 32.

[0044] Specifically, the threaded hole 32 can be set as follows: Figure 1 On the inner wall of the groove shown in (b), the flywheel 3 is threadedly connected to the vehicle clutch 5 through the threaded hole 32.

[0045] Optionally, the output shaft 2 includes a first output shaft 21 and a second output shaft 22, and the first output shaft 21 and the second output shaft 22 are respectively connected to the input shaft 1 via gear sets.

[0046] Specifically, the uninterruptible full-power PTO has selectable numbers and power of output interfaces. The location of the output interfaces (including height, front / back, and left / right positions) is selectable, as are the on / off control, speed ratio, and interface type, including but not limited to flange interfaces, external / internal spline interfaces, and pulley interfaces. Each output structure corresponds to output shaft 2, such as... Figure 4 As shown, the output shaft 2 has a first output shaft 21 and a second output shaft 22, corresponding to two output interfaces, which can be connected to two load devices respectively. The first output shaft 21 and the second output shaft 22 are respectively connected to the input shaft 1 through gear sets. When the input shaft 1 is driven to rotate by the engine, the first output shaft 21 and the second output shaft 22 rotate simultaneously to drive the two connected load devices to operate at the same time.

[0047] It should be noted that the first output shaft 21 and the second output shaft 22 can be connected to the input shaft 1 by a single gear set, or they can be connected to the input shaft 1 by two separate gear sets. For example... Figure 4 As shown, this embodiment uses two gear sets to drive the first output shaft 21 and the second output shaft 22 to the input shaft 1 respectively. The first gear set includes a first gear 11 mounted on the input shaft 1, a first intermediate gear 1.41 mounted on the first intermediate shaft 1.4, a first rotating gear 1.31 mounted on the first rotating shaft 1.3, and a second gear 211 mounted on the first output shaft 21. The first gear 11, the first intermediate gear 1.41, the first rotating gear 1.31, and the second gear 211 mesh sequentially to transmit the power obtained from the input shaft 1 to the first output shaft 21. The second gear set includes a first gear 11 mounted on the input shaft 1, a second intermediate gear 1.51 mounted on the second intermediate shaft 1.5, a second rotating gear 1.21 mounted on the second rotating shaft 1.2, and a third gear 221 mounted on the second output shaft 22. The first gear 11, the second intermediate gear 1.51, the second rotating gear 1.21, and the third gear 221 mesh sequentially to transmit the power obtained from the input shaft 1 to the second output shaft 22. It should be noted that the first intermediate shaft 1.4, the first rotating shaft 1.3, the second intermediate shaft 1.5, and the second rotating shaft 1.2 can all be used as output shafts to connect to the load device. The specific number can be adjusted according to the actual situation.

[0048] Optionally, the uninterruptible full-power power take-off further includes a pulley 7, the load device includes a generator 8, the driving pulley of the pulley 7 is connected to the second output shaft 22, and the driven pulley of the pulley 7 is connected to the generator 8.

[0049] Specifically, when dealing with equipment that requires belt drive, such as belt-driven generators, seeders, and harvesters, the power take-off (PTO) is equipped with a pulley 7, which connects to the load equipment. For example... Figure 1As shown in (a), the driving pulley of pulley 7 is connected to the second output shaft 22 of the uninterruptible full-power power take-off, and the driven pulley of pulley 7 is connected to the load device (here, a 30kW tractor generator 8). After the driving pulley obtains the power transmitted by the second output shaft 22, it drives the driven pulley installed at the front end of the generator 8 through the automotive multi-ribbed pulley system (including tensioning device, guide pulley, and idler pulley), thereby making the generator 8 work. The generator 8 runs synchronously with the engine, that is, it starts running as soon as the engine starts, and can provide power output in real time.

[0050] Optionally, the load device includes a hydraulic clutch 9, which is connected to the first output shaft 21.

[0051] Optionally, the uninterrupted full-power power take-off further includes a first rotating shaft 1.3 that is connected to the output shaft 2 and the input shaft 1 via a gear set. The first rotating shaft 1.3 is used to connect to the hydraulic pump 1.2 to deliver the lubricating oil inside the housing 6 to the hydraulic clutch 9.

[0052] Specifically, such as Figure 6 and Figure 1 As shown in (a), the load device can be a hydraulic clutch 9, and the first output shaft 21 is connected to the hydraulic clutch 9. Meanwhile, as... Figure 1 (b) and Figure 4 As shown, a first rotating shaft 1.3, which is connected to both the output shaft 2 and the input shaft 1, is connected to a hydraulic pump 1.2. Using the lubricating oil inside the housing 6 as the hydraulic source, the hydraulic pump 1.2 outputs the hydraulic power to the piston of the hydraulic clutch 9 through, for example, a delivery pipe. This forces the static friction plates of the hydraulic clutch 9 to engage with the dynamic friction plates, thereby rotating the output shaft of the hydraulic clutch 9 and driving other load structures connected to the hydraulic clutch 9. An oil filter 1.8 can be installed on the pipeline connecting the housing 6 and the hydraulic pump 1.2 to ensure that the oil entering the hydraulic clutch 9 meets the required standards.

[0053] It should be noted that the output power can be switched on and off by controlling the engagement or disengagement of the hydraulic clutch 9. The control method is electro-hydraulic control, that is, the hydraulic pump 1.2 can be electrically connected to a solenoid valve controlled by an external remote switch. The solenoid valve controls the on / off of the hydraulic power source to control the engagement or disengagement of the hydraulic clutch 9. When the solenoid valve controls the hydraulic pump 1.2 to start, the hydraulic pump 1.2 outputs the hydraulic power source to the piston of the hydraulic clutch 9 through, for example, a delivery pipeline. This compresses the static friction plate and the dynamic friction plate of the hydraulic clutch 9, causing the output shaft of the hydraulic clutch 9 to rotate, thereby driving the operation of other load structures connected to the hydraulic clutch 9. When the solenoid valve controls the hydraulic pump 1.2 to close, the hydraulic pump 1.2 stops supplying fluid to the hydraulic clutch 9, and the oil temporarily stored in the hydraulic clutch 9 overflows through the oil passage. It should be noted that, since the oil inside the housing 6 is used as the driving oil for the hydraulic clutch 9 in this embodiment, in order to ensure that there is always enough oil in the housing 6 to lubricate the rotation of the gear set and other structures therein, the oil circuit of the hydraulic clutch 9 is connected to the inside of the housing so that excess oil overflows back into the housing 6 and participates in gear lubrication.

[0054] An embodiment of the present invention provides a vehicle including an uninterrupted full-power power take-off unit as described above.

[0055] The advantages of the vehicle in this embodiment over the prior art are the same as those of the uninterrupted full-power power take-off described above, and will not be repeated here.

[0056] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An uninterrupted full power take-off, characterized in that include: An input shaft (1) is used to connect to the crankshaft of the engine. A flywheel (3) is rotatably connected to the end of the input shaft (1) away from the crankshaft. The flywheel (3) is used to connect to the vehicle clutch (5). The output shaft (2) is used to drive the input shaft (1) through a gear set, and the output end of the output shaft (2) is connected to the load device; The housing (6) contains the input shaft (1) and the output shaft (2), which are disposed inside the housing (6). The housing (6) contains lubricating oil, and the end of the input shaft (1) near the crankshaft extends out of the housing (6), while the end of the output shaft (2) used to connect to the load device extends out of the housing (6).

2. The unbroken full power take-off according to claim 1, characterized in that The input shaft (1) is provided with a stop (12) at the end for connecting to the crankshaft, for positioning and abutting the crankshaft.

3. The unbroken full power take-off of claim 1, wherein, The input shaft (1) is a hollow cylindrical shape, and bolt holes are provided on the input shaft (1). The output shaft (2) is connected to the crankshaft bolt through the bolt holes.

4. The unbroken full power take-off of claim 1, wherein, The flywheel (3) has a groove (31) on its end face facing the vehicle clutch (5) for positioning the vehicle's built-in clutch.

5. The unbroken full power take-off of claim 1, wherein, The flywheel (3) has a threaded hole (32) on its end face facing the vehicle clutch (5), and the flywheel (3) is threadedly connected to the vehicle clutch (5) through the threaded hole (32).

6. The unbroken full power take-off of claim 1, wherein, The output shaft (2) includes a first output shaft (21) and a second output shaft (22), and the first output shaft (21) and the second output shaft (22) are respectively connected to the input shaft (1) through a gear set.

7. The uninterrupted full-power power take-off unit according to claim 6, characterized in that, It also includes a pulley (7), the load device includes a generator (8), the driving pulley of the pulley (7) is connected to the first output shaft (21), and the driven pulley of the pulley (7) is connected to the generator (8).

8. The unbroken full power take-off of claim 6, wherein, The load device includes a hydraulic clutch (9) connected to the second output shaft (22).

9. The unbroken full power take-off of claim 8, wherein, It also includes a first rotating shaft (1.3) that is connected to the output shaft (2) and the input shaft (1) via a gear set. The first rotating shaft (1.3) is used to connect to a hydraulic pump (1.2) to deliver the lubricating oil inside the housing (6) to the hydraulic clutch (9).

10. A vehicle characterized by comprising: Including the uninterruptible full-power power take-off unit as described in any one of claims 1 to 9.

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