CN220031705U - Top-mounted driving system and washing and sweeping vehicle - Google Patents

Abstract

The utility model provides a loading driving system and a washing and sweeping vehicle, wherein the loading driving system comprises a power generation module, a loading power module and a power distribution module, wherein the power generation module is connected with a power assembly of the vehicle through a power taking mechanism so as to take out power through the power taking mechanism when the power assembly works; the upper power module is used for driving load equipment; the power distribution module comprises a power distribution box and a super capacitor, wherein the input end of the power distribution box is connected with the power generation module, the output end of the power distribution box is connected with the upper power module, and the super capacitor is used for adjusting electric energy output by the power generation module to the upper power module; the power generation module and the upper power module are also connected with a system controller. The power generation module is used for taking power from the power assembly to generate power, decoupling with chassis power generation is avoided, power of the power assembly is fully utilized, energy consumption loss of the washing and sweeping vehicle during low-speed running is reduced, load equipment is driven by the independent upper power module, power can be stably output, and the capability of vehicle cleaning operation is guaranteed.

Description

Top-mounted driving system and washing and sweeping vehicle

Technical Field

The utility model relates to the technical field of cleaning equipment, in particular to a top-loading driving system and a washing and sweeping vehicle.

Background

The washing and sweeping vehicle is a special mechanical equipment for cleaning road, and is mainly used for removing dust, garbage, fallen leaves, weeds and other sundries on road and cleaning dirt and oil stain on road. The washing and sweeping vehicle has the characteristics of high efficiency, rapidness, environmental protection and the like, can effectively improve urban environment and road safety, and is one of important tools for urban management and environmental protection.

The traditional fuel oil washing and sweeping vehicle is provided with two engines, namely a main engine for driving the chassis to run and a secondary engine for supporting the uploading operation, wherein the secondary engine drives uploading components such as a fan, a high-pressure water pump, a hydraulic oil pump and the like through a belt pulley. When the washing and sweeping vehicle performs washing and sweeping operation, both engines need to be opened, and the whole vehicle emission and noise pollution are serious; and the running speed is slower, the power requirement required by the running of the engine only accounts for about 15% of the total power of the engine, and the engine does not work in an economic area, so that the fuel consumption of the washing and sweeping vehicle is higher.

Disclosure of Invention

Based on the above, the utility model aims to provide a loading driving system and a washing and sweeping vehicle, which are used for solving the technical problem that the washing and sweeping vehicle has higher oil consumption because an engine does not work in an economic area when the washing and sweeping vehicle in the prior art works.

In one aspect, the present utility model provides a top drive system, comprising:

the power generation module is connected with a power assembly of the vehicle through a power taking mechanism so as to take power to generate electricity through the power taking mechanism when the power assembly works;

the upper power module is used for driving load equipment;

the power distribution module comprises a power distribution box and a super capacitor, wherein the input end of the power distribution box is connected with the power generation module, the output end of the power distribution box is connected with the upper power module, and the super capacitor is used for adjusting electric energy output by the power generation module to the upper power module;

the power generation module and the upper power module are further connected with a system controller, and the system controller is used for receiving a power demand signal fed back by the upper power module, and adjusting the power generation power of the power generation module in real time according to the power demand signal so as to enable the power generation power of the power generation module to be matched with the use power of the upper power module.

Further, the power generation module comprises a power generation unit and a power generation controller, and the power generation unit is electrically connected with the input end of the distribution box through the power generation controller.

Further, the power generation unit comprises a shell, the shell comprises a separation shell, one side of the separation shell is provided with a speed reducing mechanism, the other side of the separation shell is provided with a driving mechanism, and a cooling structure is arranged in the shell wall of the separation shell.

Further, the upper driving system is characterized in that the driving mechanism is an axial flux motor, and at least one stator of the axial flux motor is fixed on the end face of the separation shell.

Further, the upper mounting driving system is characterized in that the cooling structure comprises a first inlet and a second outlet which are arranged on the outer side wall of the separation shell, and a cooling flow passage which is arranged in the wall of the separation shell and communicated with the first inlet and the second outlet.

Further, the upper driving system further comprises a first shell and a second shell, the first shell is arranged on one side of the separation shell, the second shell is arranged on the other side of the separation shell, the speed reducing mechanism is arranged between the first shell and the separation shell, and the driving mechanism is arranged between the separation shell and the second shell.

Further, the upper driving system comprises an engine, a clutch and a gearbox, wherein the engine is connected with the gearbox through the clutch, a side power takeoff is externally connected to the gearbox, and the side power takeoff is connected with a low-pressure water pump.

Further, the loading driving system is characterized in that the loading power module comprises loading driving units and a loading controller, the loading driving units are electrically connected with the output ends of the distribution box through the loading controller, the number of the loading driving units is one, and one loading driving unit drives all load devices.

Further, the upper mounting driving system comprises upper mounting driving units and upper mounting controllers, wherein the upper mounting driving units are electrically connected with the output ends of the distribution boxes through the upper mounting controllers, the number of the upper mounting driving units is at least two and equal to that of the load devices, and each upper mounting driving unit drives one load device.

The utility model further provides a washing and sweeping vehicle, which comprises the upper driving system in the technical scheme.

Compared with the prior art, the utility model has the beneficial effects that:

1. the auxiliary engine is canceled, and the power generation module, the power distribution module and the upper power module are used as power sources, so that the whole system is reduced in weight by 300kg, the oil consumption can be saved by 15% -20%, and the comprehensive use cost can be saved by 20%. The power generation module is powered from the power assembly to generate power, the power can not be decoupled with chassis power, the power of the power assembly is fully utilized, the energy consumption loss of the washing and sweeping vehicle during low-speed running is reduced, the load equipment is driven by the independent upper power module, the output power can be stabilized, and the capability of vehicle cleaning operation is ensured.

2. The super capacitor is connected to the block terminal all the way, and super capacitor plays the effect of steady voltage filtering, can hold unnecessary electric quantity in a short time, perhaps in time supplement when generating power is less than the use power.

3. In the working process of the power assembly, the generated power is adjusted in real time according to the power requirement of the upper power module, so that the normal running and working of the washing and sweeping vehicle under extreme road conditions are ensured, and the problem of allocating the working efficiency of the washing and sweeping vehicle is better achieved.

Drawings

FIG. 1 is a block diagram of a first embodiment of a top-loading drive system according to the present utility model;

FIG. 2 is a schematic diagram showing a structure of an upper driving system according to a first embodiment of the present utility model;

FIG. 3 is a schematic diagram showing a specific structure of a power generation unit according to a first embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a power generation unit in a first embodiment of the utility model;

FIG. 5 is a schematic diagram showing a specific structure of a speed reducing mechanism according to a first embodiment of the present utility model;

FIG. 6 is a cross-sectional view taken at position A-A of FIG. 5;

FIG. 7 is a schematic diagram showing a structure of an upper driving system according to a second embodiment of the present utility model;

description of main reference numerals:

10. a power generation module; 11. a power generation unit; 12. a power generation controller; 13. a force taking mechanism; 20. a power assembly; 21. an engine; 22. a clutch; 23. a gearbox; 24. a side power take-off; 25. a low pressure water pump; 30. a power module is arranged on the upper part; 31. a top-loading driving unit; 32. a loading controller; 40. a power distribution module; 41. a distribution box; 42. a super capacitor; 50. a system controller; 51. a blower; 52. a high pressure water pump, 53, hydraulic oil pump; 111. a separation shell; 112. a first housing; 113. a second housing; 60. a cooling structure; 61. a first access port; 62. a second inlet and outlet; 63. a flow guide channel; 64. a flow channel body; 65. a flow blocking table; 66. bending the runner; 67. an outer edge; 68. an inner edge; 69. a fixing hole; 70. a speed reducing mechanism; 71. a sun gear; 72. a planet wheel; 73. an inner gear ring; 74. a planet carrier; 75. a power output shaft; 76. a third bearing; 77. a fourth bearing; 80. a driving mechanism; 81. a rotor shaft; 82. a rotor disc; 83. a first stator; 84. a second stator; 85. a first bearing; 86. and a second bearing.

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a top drive system according to a first embodiment of the present utility model includes a power generation module 10, a top power module 30, and a power distribution module 40.

The power generation module 10 is connected with a power assembly 20 of the vehicle through a power take-off mechanism 13, so as to take off power to generate electricity through the power take-off mechanism 13 when the power assembly 20 works.

Specifically, in the present embodiment, the power take-off mechanism 13 is specifically a PTO (power take-off), and the power generation module 10 is connected to a chassis power take-off of the vehicle to take off power during running of the vehicle.

The above-described upper power module 30 is used to drive a load device. The load devices in the present embodiment include a fan 51, a high-pressure water pump 52, and a hydraulic oil pump 53, but are not limited thereto, and the kinds and the number of the load devices may be adjusted according to the actual demands of the users.

The power distribution module 40 comprises a power distribution box 41 and a super capacitor 42, wherein the input end of the power distribution box 41 is connected with the power generation module 10, the output end of the power distribution box 41 is connected with the upper power module 30, and the super capacitor 42 is used for adjusting the electric energy output by the power generation module 10 to the upper power module 30;

the power generation module 10 and the upper power module 30 are further connected to a system controller 50, and the system controller 50 is configured to receive a power demand signal fed back by the upper power module 30, and adjust the power generated by the power generation module 10 in real time according to the power demand signal, so that the power generated by the power generation module 10 is adapted to the power used by the upper power module 30.

The upper driving system takes the power generation module 10, the power distribution module 40 and the upper power module 30 as upper power sources to replace the auxiliary engine 21, the fuel oil upper installation is transformed to electrification, and the vehicle emission meets the national requirements. Compared with the traditional fuel oil washing and sweeping vehicle, the whole system is reduced by 300kg, the fuel consumption can be saved by 15% -20%, the comprehensive use cost can be saved by 20%, the price is equal, and the energy-saving effect is better. Solves the serious problems of noise and environmental pollution of the traditional fuel oil vehicle; compared with a pure electric washing and sweeping vehicle, the price advantage is obvious, and mileage anxiety is avoided; compared with mechanical and hydraulic single-shot washing and sweeping vehicles, the loading operation is more stable, the efficiency is high, and better oil saving effect can be achieved.

In addition, the oil-electricity hybrid power system adopting the single engine omits the design of a storage battery, has the effects of saving energy and reducing emission, and can effectively prevent the impact of back electromotive force when the working state of the operating system is switched in low-speed operation so as to damage the system.

It should be noted that, during the operation of the upper power module 30, the power demand thereof fluctuates and is fed back to the system controller 50 in real time. Based on the fed back power demand signal, the system controller 50 adjusts the generated power of the power generation module 10 in real time according to the demand, so that the generated power of the power generation module 10 is approximately equal to the used power of the upper power module 30, and the super capacitor 42 plays a role in buffering in the power following function, so that the power demand controller can accommodate the surplus electric quantity in a short time or can timely supplement the power generated when the power generated is lower than the used power.

The core scheme for power following can be considered as: the power demand of the upper power module 30 is used as a feedback signal to adjust the generated power of the power generation module 10 in real time, and the super capacitor 42 is used as a buffer.

In another embodiment, the system controller 50 may be coupled to the power assembly 20 while being coupled to the power generation module 10 and the on-board power module 30. In order to better allocate the output energy consumption of the power generation module 10, we also acquire information of the two sets of power outputs through the system controller 50, specifically referring to fig. 2, the power generation module 10 includes a power generation unit 11 and a power generation controller 12, the power generation unit 11 is electrically connected with the input end of the distribution box 41 through the power generation controller 12, the power generation controller 12 is an AC/DC controller, and the internal structure of the power generation controller 12 can rectify the input alternating current into direct current to output, and meanwhile, feedback information related to the current to the system controller 50; the upper power module 30 includes an upper driving unit 31 and an upper controller 32, the upper driving unit 31 is electrically connected with the output end of the distribution box 41 through the upper controller 32, the upper controller 32 is a DC/AC controller, and the internal structure of the upper power module can invert the input direct current into alternating current to be output to the upper driving unit 31, and meanwhile, the information related to the current is fed back to the system controller 50; the system controller 50 receives the feedback information of the power assembly 20, the AC/DC controller and the DC/AC controller, makes a judgment and controls the whole hybrid power system, and reasonably distributes the working power of the power assembly 20, the power generated by the power generation unit 11, the input electric quantity of the upper driving unit 31 and the like, thereby ensuring that the washing and sweeping vehicle can normally run and work under extreme road conditions. The problem of allocating the working efficiency of the washing and sweeping vehicle is better achieved.

In some embodiments, the AC/DC may implement constant voltage control through a three-phase multi-switch boost rectification circuit, and the DC/AC implements motor control through a three-phase inverter circuit. When the system works, the energy distribution and supply of the loading system are realized according to the requirement through the closed-loop stable control of the AC/DC rectifying voltage ring.

For example: when the energy required by the upper driving unit 31 increases, the bus voltage is pulled down, so that the actual bus voltage is lower than the target voltage, and the power generation controller 12 adjusts its PWM signal by using the negative feedback signal to further increase the output voltage, so as to control the power generation unit 11 to emit more energy until the target voltage is controlled within the target error range, thereby realizing the boost supply of the motor energy. On the contrary, when the required energy of the upper driving unit 31 is reduced, and if the power generation unit 11 still generates the same amount of electricity as the original power, the bus voltage is raised, the power generation controller 12 uses the feedback signal to adjust its own PWM signal so as to reduce the output voltage, and reduce the power generation amount of the power generation unit 11 until the target voltage is controlled within the target error range, thereby realizing the reduced supply of the energy of the upper driving unit 31. By implementing the control process and principle, the on-demand supply of the energy loaded on the washing and sweeping vehicle under the condition of no storage battery is realized, and the normal, reliable and stable operation of the system is ensured.

The power generation unit 11 is composed of a reduction gearbox and a generator, wherein the reduction gearbox plays a role in increasing torque, and the cost of the generator can be reduced. In this embodiment, the reduction gearbox and the generator may be integrated and share the same cooling water channel, so that the heat dissipation effect is better, and refer to fig. 3 specifically. The power generation unit 11 comprises a housing, the housing comprises a separation shell 111, one side of the separation shell 111 is provided with a speed reduction mechanism 70 (a speed reduction box), the other side of the separation shell 111 is provided with a driving mechanism 80 (a generator), and a cooling structure 60 is arranged in a shell wall of the separation shell 111.

It can be appreciated that the cooling structure 60 is arranged in the separation shell 111, so that the driving mechanism 80 at one side of the separation shell 111 can be cooled, and the speed reducing mechanism 70 at the other side of the separation shell 111 can be cooled, so that heat generated by the driving mechanism 80 is effectively prevented from being transmitted to the speed reducing mechanism 70, the influence on the service efficiency of the speed reducing mechanism 70 due to overhigh temperature of the speed reducing mechanism 70 is effectively avoided, and the service life of the speed reducing mechanism 70 is prolonged. Secondly, the reduction mechanism 70 and the driving mechanism 80 share one separating shell 111, so that the axial size of the whole power generation unit 11 can be further reduced, the weight is reduced, the size is reduced, the integration of the power generation unit 11 is improved, and meanwhile, the number of parts is reduced, so that the assembly is convenient.

With specific reference to fig. 3, 4 and 5, the housing further includes a first housing 112 and a second housing 113, the first housing 112 is disposed on one side of the casing 111, the second housing 113 is disposed on the other side of the casing 111, the speed reducing mechanism 70 is disposed between the first housing 112 and the casing 111, and the driving mechanism 80 is disposed between the casing 111 and the second housing 113.

In the embodiment, the rotation speed of the engine 21 is 900-1000rpm during normal operation of the washing and sweeping vehicle, the rotation speeds of the high-pressure water pump 52 and the hydraulic oil pump 53 are about 1000rpm and 1500rpm during operation respectively, the rotation speed of the fan 51 is 1800-2500rpm, and the rated rotation speed of the motor is 3500rpm, so that the generator and the planetary gear reducer with the speed ratio of 3.7 are integrally designed. The drive mechanism 80 is preferably an axial flux motor, the partition 111 and the second housing 113 constituting the casing of the axial flux motor, and the partition 111 and the first housing 112 constituting the casing of the planetary reduction mechanism.

In addition, the upper driving unit 31 in the embodiment may also be an axial flux motor and be matched with a planetary reduction mechanism, so that a larger arrangement space can be reserved during installation, and installation is convenient. The motor efficiency is higher, and weight is lighter, can further save the running cost.

It can be appreciated that since the axial flux motor is an axial magnetic field, the direction of increasing power is radial, so that the motor with very high power can be very flat, and the motor is very suitable for occasions with small installation position size. Compared with the traditional radial magnetic field motor, the axial magnetic flux motor has the advantages of short axial size, smaller volume, lighter weight, short overall axial size, improved integration of the power generation unit 11 and the upper driving unit 31, and about 30% lighter weight than the common radial permanent magnet motor under the same output power.

In addition, by adopting the combination form of the axial flux motor plus-planetary reduction mechanism, the weight and the axial size of the whole power generation unit 11 and the upper driving unit 31 can be greatly reduced, and the compactness of the structure is improved.

Referring specifically to fig. 4, for ease of understanding, a cavity formed between the first housing 112 and the partition 111 is referred to as a first cavity, and a cavity formed between the partition 111 and the second housing 113 is referred to as a second cavity.

The driving mechanism 80 in the embodiment comprises a rotor shaft 81, a rotor disc 82 and a stator, wherein one end of the rotor shaft 81 extends into the first cavity, the other end of the rotor shaft is rotatably arranged in a bearing chamber of the second shell 113 through a first bearing 85, a second bearing 86 is arranged at a shaft hole position of the separation shell 111, and the second bearing 86 is sleeved on the rotor shaft 81 for auxiliary transmission;

the stator may include a first stator 83 and a second stator 84, where the first stator 83 is fixedly disposed on an end surface of the middle housing 111 in the second cavity, the second stator 84 is fixedly disposed on an end surface of the second housing 113 in the second cavity, and the rotor disc 82 is fixedly disposed on the rotor shaft 81 corresponding to a gap between the first stator 83 and the second stator 84. The stator may also include only the first stator 83 fixed on the end surface of the middle housing 111 in the second cavity, thereby forming a single-stator and single-rotor motor structure.

Referring specifically to fig. 6, the cooling structure 60 includes a first inlet 61 and a second inlet 62 formed on the outer wall of the casing 111, and a cooling channel formed in the casing wall of the casing 111 and communicating the first inlet 61 with the second inlet 62.

In one embodiment, the first inlet and outlet 61 is an inlet, the second inlet and outlet 62 is an outlet, and the cooling medium enters from the first inlet and outlet 61 into the cooling flow passage, flows through the cooling flow passage clockwise until flowing out from the second inlet and outlet 62, so as to realize heat exchange cooling operation of the speed reducing mechanism 70 and the driving mechanism 80 respectively. The cooling medium comprises a liquid such as water or oil. In another embodiment, the first inlet and outlet 61 may be an outlet, and the second inlet and outlet 62 may be an inlet, and the cooling medium may be injected into the partition 111 in various flow patterns.

Specifically, the cooling flow channel includes a flow guiding channel 63 that communicates with the first inlet and outlet 61, and a flow channel body 64 that communicates with the flow guiding channel 63, where one end of the flow channel body 64 away from the flow guiding channel 63 communicates with the second inlet and outlet 62. In this embodiment, the first inlet and outlet 61 is an inlet, the second inlet and outlet 62 is an outlet, firstly the cooling medium flows into the flow guiding channel 63 from the first inlet and outlet 61, then flows back into the flow guiding channel body 64, and finally is discharged from the second inlet and outlet 62, wherein the flow guiding channel 63 mainly plays a guiding role to ensure that the cooling medium flows clockwise along the track of the flow guiding channel body 64, and avoid that the cooling medium enters the flow guiding channel body 64 in a diffusion mode to reduce the heat exchange effect.

Specifically, the flow channel body 64 is blocked by a blocking table 65 and has a ring shape. So that the cooling medium irreversibly flows through the flow passage body 64 while increasing the area of the flow passage body 64 on the separator 111, enhancing the cooling performance. The width of the flow blocking table 65 is as short as possible to increase the area of the flow channel body 64, so as to improve the heat exchange effect of the flow channel body 64 on the stator and the speed reducing mechanism 70.

With continued reference to fig. 6, the flow channel body 64 has a plurality of curved flow channels 66 in an annular array, and in this embodiment, the curved flow channels 66 are connected in series with the flow channel body 64 to form a serpentine channel with a continuous bending shape, so as to increase the flow path of the cooling medium, so that the cooling medium can stay in the wall of the separation shell 111 for a longer time, and ensure that the cooling medium has sufficient time to exchange heat with the speed reducing mechanism 70 and the driving mechanism 80. The curved flow channel 66 and the flow channel body 64 may be connected in parallel, but are not limited to being connected in series.

Referring to fig. 4 and 6, the curved flow channels 66 have an outer edge 67 and an inner edge 68 that are oppositely disposed, the outer edge 67 is aligned with the outer side of the flow guide channel 63 in the same arc, and a fixing hole 69 is disposed on a side of the inner edge 68 facing away from the outer edge 67, where the fixing hole 69 is used to fix the first stator 83 on the end surface of the partition shell 111 by a fastener, and it should be noted that, in this embodiment, the fixing hole 69 is not formed at the inner edge 68 of each curved flow channel 66, but one curved flow channel 66 is formed at each interval, but in practical application, the number of the fixing holes 69 may be determined according to the number of stators, and is not limited to the solution shown in this embodiment.

As shown in fig. 4 and 5, in the present embodiment, the planetary reduction mechanism includes a sun gear 71, a planet gear 72, an inner gear ring 73, a planet carrier 74 and a power output shaft 75, the planet carrier 74 is rotatably disposed in the first cavity through a third bearing 76 and a fourth bearing 77, wherein the third bearing 76 is disposed on one side of the first cavity in the partition shell 111, the fourth bearing 77 is disposed on one side of the first cavity in the first shell 112, the sun gear 71 is disposed on the planet carrier 74 and is connected with the rotor shaft 81, the planet gear 72 is disposed on the planet carrier 74, the planet gear 72 surrounds the sun gear 71 and is meshed with the sun gear 71, the inner gear ring 73 is disposed on the inner periphery of the first shell 112, the inner teeth of the inner gear ring 73 are meshed with the planet gear ring 72, one end of the power output shaft 75 extends into the first cavity to be connected with the planet carrier 74, and the other end extends out of the first shell 112 to drive an external device. In practical application, the rotor shaft 81 drives the sun gear 71 to rotate, the sun gear 71 drives the planet gears 72 to rotate, the planet gears 72 drive the planet carrier 74 to rotate, and the planet carrier 74 drives the power output shaft 75 to rotate, so that the equipment is driven. The plurality of planetary gears 72 are uniformly distributed to share the load, and the sun gear 71, the annular gear 73 and the planet carrier 74 are on the same central axis, so that the whole structure is compact, and compared with the traditional speed reducing mechanism, the speed reducing mechanism has smaller volume and lighter weight.

In addition, the structure has fewer parts, the power output shaft 75 and the rotor shaft 81 are coaxial, the structure is simple, the installation is convenient, and the planetary reduction mechanism simultaneously has a plurality of tooth surfaces to uniformly bear impact load, and the impact resistance of the planetary reduction mechanism is improved.

Referring specifically to fig. 4, the powertrain 20 includes an engine 21, a clutch 22, and a gearbox 23, where the engine 21 is connected to the gearbox 23 through the clutch 22, a side power take-off 24 is externally connected to the gearbox 23, the side power take-off 24 is connected to a low-pressure water pump 25, and the low-pressure water pump 25 can take off power from the gearbox 23 through the side power take-off 24.

It should be noted that the number of the upper driving units 31 in the present embodiment is one, and one upper driving unit 31 drives all load devices, that is, one upper driving unit drives one fan 51, one high pressure water pump 52 and one hydraulic oil pump 53 to operate, the pneumatic tooth clutch 22 is arranged in front of the high pressure water pump 52, so as to control the power combination and separation between the upper driving unit 31 and the high pressure water pump 52, and disconnect the input power of the high pressure water pump 52 during the road sweeping operation, so as to avoid the idle wear of the high pressure water pump 52.

In summary, in the upper driving system in the embodiment of the utility model, the auxiliary engine is canceled and is replaced by the power generation module, the power distribution module and the upper power module as power sources, so that the whole system is reduced by 300kg, the oil consumption can be saved by 15% -20%, and the comprehensive use cost can be saved by 20%. The power generation module is powered from the power assembly to generate power, the power can not be decoupled with chassis power, the power of the power assembly is fully utilized, the energy consumption loss of the washing and sweeping vehicle during low-speed running is reduced, the load equipment is driven by the independent upper power module, the output power can be stabilized, and the capability of vehicle cleaning operation is ensured.

Referring to fig. 7, a top drive system according to a second embodiment of the present utility model is shown, wherein the top drive system according to the present embodiment is different from the top drive system according to the first embodiment in that: the number of the upper driving units 31 is at least two and equal to the number of the load devices, and each upper driving unit 31 drives one load device. In this embodiment, the number of the upper driving units 31 is 4, and the upper driving units are integrated with each load device integrally, so that an integrated blower, an integrated high-pressure water pump, an integrated brush and an integrated hydraulic oil pump are formed. The specific number of the upper driving units 31 and the number of the actual load devices are not limited herein.

It can be understood that, in order to pursue better oil-saving effect, the loading part of the driving power generation system can be upgraded into a distributed direct-drive scheme: the belt pulley is canceled, and the fan, the high-pressure water pump, the hydraulic oil pump and the sweeping brush are all directly driven by a motor. Compared with the traditional driving scheme, the scheme improves the utilization rate of the loading space by 20 percent, thereby further increasing the areas of the dustbin and the clean water tank and enabling the operation capacity to exceed that of the diesel vehicle.

The third embodiment of the utility model also provides a washing and sweeping vehicle, and the uploading driving system in the technical scheme is adopted.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A top-loading drive system, comprising:

the power generation module (10) is connected with a power assembly (20) of the vehicle through a power taking mechanism (13) so as to take power to generate electricity through the power taking mechanism (13) when the power assembly (20) works;

a top-up power module (30), the top-up power module (30) being used to drive a load device;

the power distribution module (40), the power distribution module (40) comprises a power distribution box (41) and a super capacitor (42), the input end of the power distribution box (41) is connected with the power generation module (10), the output end of the power distribution box (41) is connected with the upper power module (30), and the super capacitor (42) is used for adjusting the electric energy output by the power generation module (10) to the upper power module (30);

the power generation module (10) and the upper power module (30) are further connected with a system controller (50), and the system controller (50) is used for receiving a power demand signal fed back by the upper power module (30) and adjusting the power generation power of the power generation module (10) in real time according to the power demand signal so as to enable the power generation power of the power generation module (10) to be matched with the power utilization of the upper power module (30).

2. The packaging drive system according to claim 1, wherein the power generation module (10) comprises a power generation unit (11) and a power generation controller (12), and the power generation unit (11) is electrically connected with the input end of the distribution box (41) through the power generation controller (12).

3. The on-board drive system according to claim 2, wherein the power generation unit (11) comprises a housing, the housing comprises a partition (111), one side of the partition (111) is provided with a speed reducing mechanism (70), the other side is provided with a drive mechanism (80), and a cooling structure (60) is arranged in a wall of the partition (111).

4. A top-mounted drive system according to claim 3, wherein the drive mechanism (80) is an axial flux motor, at least one stator of which is fixed on an end face of the separator housing (111).

5. A top-mounted drive system according to claim 3, wherein the cooling structure (60) comprises a first inlet (61) and a second inlet (62) provided on the outer side wall of the partition (111), and a cooling flow passage provided in the wall of the partition (111) communicating the first inlet (61) and the second inlet (62).

6. A top-mounted drive system according to claim 3, wherein the housing further comprises a first housing (112) and a second housing (113), the first housing (112) being arranged on one side of the partition (111), the second housing (113) being arranged on the other side of the partition (111), the reduction mechanism (70) being arranged between the first housing (112) and the partition (111), the drive mechanism (80) being arranged between the partition (111) and the second housing (113).

7. The on-board drive system according to claim 1, wherein the powertrain (20) comprises an engine (21), a clutch (22) and a gearbox (23), the engine (21) is connected with the gearbox (23) through the clutch (22), a side power take-off (24) is externally connected to the gearbox (23), and the side power take-off (24) is connected with a low-pressure water pump (25).

8. The top-loading drive system according to any one of claims 1 to 7, wherein the top-loading power module (30) comprises a top-loading drive unit (31) and a top-loading controller (32), the top-loading drive unit (31) is electrically connected with the output end of the distribution box (41) through the top-loading controller (32), wherein the number of the top-loading drive units (31) is one, and one top-loading drive unit (31) drives all load devices.

9. The top-loading drive system according to any one of claims 1-7, wherein the top-loading power module (30) comprises a top-loading drive unit (31) and a top-loading controller (32), the top-loading drive unit (31) is electrically connected with the output end of the distribution box (41) through the top-loading controller (32), wherein the number of the top-loading drive units (31) is at least two and equal to the number of the load devices, and each top-loading drive unit (31) drives one load device.

10. A washing and sweeping vehicle comprising an upper drive system according to any one of claims 1 to 9.