CN116373575A

CN116373575A - Engineering vehicle

Info

Publication number: CN116373575A
Application number: CN202211509463.1A
Authority: CN
Inventors: 徐阔; 李涛; 冯思顺; 田佳佳
Original assignee: Construction Machinery Branch of XCMG
Current assignee: Construction Machinery Branch of XCMG
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-07-04

Abstract

The application provides an engineering vehicle, it includes: a frame; the travelling mechanism is arranged on the frame and used for realizing travelling of the engineering vehicle; the cab is arranged at the front end of the frame; the operating system is arranged on the frame and is used for executing an operation task; the power system comprises a walking motor which is in driving connection with the walking mechanism; and the power battery supplies power for the walking motor, and is detachably arranged at the tail end of the frame, and the rear and/or the upper part of the power battery are/is not shielded. Thus, the power battery is convenient to replace.

Description

Engineering vehicle

Technical Field

The application relates to the technical field of engineering machinery, in particular to an engineering vehicle.

Background

Some power sources of the engineering vehicle comprise a power battery, and the power battery provides electric energy for a traveling motor of the engineering vehicle to realize the traveling function of the engineering vehicle.

In order to meet the endurance requirements of engineering vehicles, power batteries of some engineering vehicles are arranged to be detachable, so that the power batteries can be replaced when a power battery pack fails due to insufficient electric quantity and the like.

However, in the related art, the power battery of the construction vehicle has a problem of inconvenient disassembly and assembly.

Disclosure of Invention

One technical problem to be solved by the present application is: the power battery on the engineering vehicle is convenient to replace.

In order to solve the above technical problem, the present application provides an engineering vehicle, which includes:

a frame;

the travelling mechanism is arranged on the frame and used for realizing travelling of the engineering vehicle;

the cab is arranged at the front end of the frame;

the operating system is arranged on the frame and is used for executing an operation task;

the power system comprises a walking motor which is in driving connection with the walking mechanism; and

the power battery supplies power for the walking motor, the power battery is detachably arranged at the tail end of the frame, and the rear and/or the upper part of the power battery are/is not shielded.

In some embodiments, a connection part is arranged on the power battery and is used for being connected with the power conversion device so as to disassemble and assemble the power battery by the power conversion device.

In some embodiments, the connection portion includes a slot.

In some embodiments, the connection is provided on the rear wall of the power cell.

In some embodiments, the running gear is a track running gear.

In some embodiments, the crawler belt running mechanism is a rubber crawler belt running mechanism.

In some embodiments, the work system comprises a boom and further comprises at least one of a hook, a basket, and a drill pipe disposed on the boom.

In some embodiments, the work system is coupled to a portion of the frame between the cab and the power battery.

In some embodiments, the powertrain is disposed at a front end of the frame and is disposed side-by-side with the cab in the left-right direction.

In some embodiments, the power system includes at least one of a first heat sink for dissipating heat from the travel motor and a second heat sink for dissipating heat from oil in a reducer connecting the travel motor and the travel mechanism for driving the power system.

In some embodiments, the first heat sink and/or the second heat sink are disposed rearward of the travel motor.

In some embodiments, the power system includes a first heat sink and a second heat sink, the first heat sink and the second heat sink being arranged side-by-side along a left-right direction.

In some embodiments, the second heat dissipating device includes a heat dissipating fan and an oil pumping mechanism, an inlet and an outlet of the heat dissipating fan are connected to an outlet and an inlet of the speed reducer, respectively, the oil pumping mechanism drives oil to circulate between the speed reducer and the heat dissipating fan, and the heat dissipating fan cools the oil flowing into the heat dissipating fan from the speed reducer.

In some embodiments, the work vehicle includes a leg that is disposed on the frame and is switchable between a deployed state in which the leg contacts the ground to support the entire vehicle and a stowed state.

In some embodiments, the work vehicle is an electric only work vehicle.

Because the power battery is not arranged at the middle front part of the frame, but is arranged at the tail end of the frame, and the rear and/or the upper part is not shielded, the replacement of the power battery is convenient, and the power conversion efficiency is improved.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a right side view of a work vehicle in an embodiment of the present application.

Fig. 2 is a left side view of a worker Cheng Cheliang in an embodiment of the present application.

Fig. 3 is a schematic plan layout of an engineering vehicle according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a second heat dissipating device according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a power battery according to an embodiment of the present application.

Reference numerals illustrate:

10. engineering vehicles;

1. a frame;

2. a walking mechanism; 21. a crawler belt travelling mechanism; 22. a rubber crawler travelling mechanism;

3. a cab;

4. an operating system; 41. a suspension arm; 42. a lifting hook; 43. a hanging basket; 44. a drill rod; 45. a turntable;

5. a power system; 51. a walking motor; 52. a motor controller; 53. a speed reducer; 54. an oil tank; 55. a first heat sink; 56. a second heat sink; 561. a heat radiation fan; 562. a pumping mechanism; 563. an oil suction pipe; 564. an oil return pipe; 565. an overflow pipe; 566. a fan motor;

6. a power battery; 61. a connection part; 62. a slot; 63. a case;

7. a support leg;

81. a condenser; 82. and a storage battery.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the inventors, are within the scope of the present application, based on the embodiments herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In the description of the present application, it should be understood that, the terms "first," "second," etc. are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and if not otherwise stated, the terms are not to be construed as limiting the scope of the present application.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.

In order to respond to the call of energy conservation and emission reduction, more and more engineering vehicles adopt an electric drive mode. In the engineering vehicle adopting the electric drive mode, the power source comprises a power battery, and the power battery provides electric energy for a running motor of the engineering vehicle for driving the whole vehicle to run, so that the whole vehicle can run under the action of electric power.

Some power batteries on the engineering vehicle are arranged to be replaceable, so that the power batteries can be detached from the engineering vehicle and replaced with new power batteries when needed, and the engineering vehicle can be conveniently and quickly put into use again. In this case, the replacement efficiency of the power battery is very important.

In the related art, some improvements have been made to improve the power conversion efficiency (i.e., the replacement efficiency of the power battery), but these improvements are generally aimed at the power conversion device for replacing the power battery, however, the inventor has studied and found that the power conversion efficiency is not only affected by the power conversion device, but also affected by the work vehicle to be subjected to power conversion, for example, the power battery on the work vehicle to be subjected to power conversion is generally disposed at the middle front part of the frame, in which case the power battery is easily shielded, and is inconvenient to be engaged with the power conversion device, thus restricting further improvement of the power conversion efficiency.

In view of the above, the present application provides an engineering vehicle.

Fig. 1 to 5 exemplarily show the construction of the construction vehicle in the present application.

Referring to fig. 1-5, the work vehicle 10 provided in the present application includes a frame 1, a running gear 2, a cab 3, a work system 4, a power system 5, and a power battery 6. The traveling mechanism 2 is provided on the frame 1 and is used for traveling the construction vehicle 10. The cab 3 is provided at the front end of the frame 1. An operating system 4 is provided on the frame 1 for performing an operating task. The power system 5 comprises a walking motor 51, and the walking motor 51 is in driving connection with the walking mechanism 2. The power battery 6 supplies power to the travel motor 51. The power battery 6 is detachably arranged at the tail end of the frame 1, and the upper part and/or the rear part of the power battery 6 are/is not shielded. It is to be understood that, in the present application, the front-rear direction is defined based on the traveling direction of the working vehicle 10, wherein the forward direction of the working vehicle 10 is "front" and the backward direction is "back".

In the above scheme, the power battery 6 is not disposed at the middle front part of the frame 1, but disposed at the tail end of the frame 1, and the rear and/or upper parts are not shielded, so that when the power battery 6 needs to be replaced, the power battery 6 can be conveniently connected with a power replacing device (not shown) and removed from the frame 1 by the power replacing device, and meanwhile, the power replacing device can conveniently replace a new power battery on the frame 1, and even if the power replacing device is not used, the power battery 6 can be conveniently replaced by manual power replacement, thereby facilitating replacement of the power battery 6 and being beneficial to improving the power replacing efficiency.

In order to further facilitate the replacement of the power battery 6, referring to fig. 5, in some embodiments, a connection portion 61 is provided on the power battery 6, and the connection portion 61 is used for connecting with a power exchanging device, so that the power battery 6 is disassembled by the power exchanging device. Therefore, the power battery 6 is provided with the connecting part 61 which is specially used for being connected with the power conversion device, so that the connection between the power battery 6 and the power conversion device is more convenient to realize, and the power conversion efficiency is more convenient to improve.

As an example of the connection portion 61, referring to fig. 5, in some embodiments, the connection portion 61 includes a slot 62. In this case, the battery replacing device is simply and conveniently inserted into the slot 62 to be connected with the power battery 6, so that the efficiency is higher.

In the embodiment of the present application, the running gear 2 may be a wheel running gear, or may also be a crawler running gear 21 (see fig. 1 and 2). Compared with a wheel type travelling mechanism, the crawler travelling mechanism 21 has stronger trafficability and dynamic property, can be well adapted to road environments and non-road environments (such as severe field environments), and has wider application range and stronger practicability. The crawler belt running mechanism 21 may be a rubber crawler belt running mechanism 22, so as to reduce the weight of the whole vehicle while maintaining high maneuverability.

In addition, referring to fig. 1 and 2, in some embodiments, the work system 4 includes a boom 41, and further includes at least one of a hook 42, a basket 43, and a drill pipe 44 disposed on the boom 41. In this way, the work vehicle 10 has at least one of lifting, aerial work, and drilling functions that are effective to meet work demands. In particular, when the engineering vehicle 10 has at least two of the hook 42, the basket 43 and the drill pipe 44, the engineering vehicle 10 can integrate at least two of the three functions of lifting, overhead operation and drilling together, so as to realize functional compounding, thus having higher working flexibility and being capable of better meeting the personalized demands of customers.

Referring to fig. 1-3, in some embodiments, the work system 4 is coupled to a portion of the frame 1 between the cab 3 and the power battery 6. At this time, the layout is more reasonable.

In addition, referring to fig. 1-3, in some embodiments, the power system 5 is disposed at the front end of the frame 1 and side-by-side with the cab 3 in the left-right direction. In this way, it is advantageous to optimize the layout, and in particular, to facilitate the arrangement of the power battery 6 at the rear end of the frame 1 without being blocked. It is understood that the left-right direction is a direction perpendicular to both the front-rear direction and the up-down direction. In this application, left and right when facing the front are left and right, respectively.

As an example of the power system 5 in the foregoing embodiments, referring to fig. 1 to 3, the power system 5 includes not only the travel motor 51 but also at least one of a first heat dissipating device 55 and a second heat dissipating device 56, the first heat dissipating device 55 is used for dissipating heat from the travel motor 51, and the second heat dissipating device 56 is used for dissipating heat from oil in a decelerator 53 connecting the travel motor 51 and the travel mechanism 2 for driving of the power system 5. Thus, the heat dissipation of the oil in the traveling motor 51 and/or the speed reducer 53 can be realized, and the working reliability of the whole vehicle can be improved. In particular, in most engineering vehicles 10, the second heat dissipation device 56 is not arranged to dissipate heat of oil in the speed reducer 53, but the second heat dissipation device 56 is arranged to dissipate heat of oil in the speed reducer 53, so that problems caused by overheat of oil in the speed reducer 53 can be effectively prevented, and the working reliability of the speed reducer 53 and the whole vehicle is improved.

1-3, in some embodiments, the first heat sink 55 and/or the second heat sink 56 are disposed rearward of the travel motor 51. At this time, the layout is more reasonable, and especially, the first heat dissipating device 55 is located behind the walking motor 51, so that the heat of the walking motor 51 can flow forward through the first heat dissipating device 55 conveniently, and the influence of the heat emitted by the walking motor 51 on the power battery 6 located behind is reduced.

In addition, referring to fig. 2 and 3, in some embodiments, the power system 5 includes a first heat sink 55 and a second heat sink 56, the first heat sink 55 and the second heat sink 56 being arranged side by side along the left-right direction. Thus, the space in the left-right direction can be used more fully, and the layout is more compact.

As an example of the second heat dissipating device 56 in the foregoing embodiments, referring to fig. 5, the second heat dissipating device 56 includes a heat dissipating fan 561 and an oil pumping mechanism 562, the inlet and outlet of the heat dissipating fan 561 being connected to the outlet and inlet of the speed reducer 53, respectively, the oil pumping mechanism 562 driving oil to circulate between the speed reducer 53 and the heat dissipating fan 561, the heat dissipating fan 561 cooling the oil flowing into the heat dissipating fan 561 from the speed reducer 53. At this time, the second heat dissipating device 56 has a relatively simple structure, and can realize effective air cooling of the oil in the speed reducer 53.

In addition, referring to fig. 1 and 2, as a further improvement of the foregoing embodiments, the working vehicle 10 further includes a leg 7, where the leg 7 is provided on the frame 1 and is switchable between a deployed state in which the leg 7 contacts the ground to support the whole vehicle and a collapsed state. Based on the supporting leg 7, the stability of the whole vehicle can be improved, the whole vehicle is prevented from tipping, and particularly, the supporting leg 7 can prop up the ground in the replacement process of the power battery 6, so that the stability of the whole vehicle in the replacement process is improved.

The working vehicle 10 in the foregoing embodiments may be a pure electric working vehicle or may be a hybrid working vehicle.

The embodiments shown in fig. 1-5 are further described below.

As shown in fig. 1-5, in this embodiment, the work vehicle 10 is an electric-only rubber crawler multifunctional vehicle that includes a frame 1, a rubber crawler 22, a cab 3, a work system 4, a power system 5, a power battery 6, legs 7, a condenser 81, and a storage battery 82.

The frame 1 is a carrier of the whole vehicle, and the rubber crawler 22, the cab 3, the operating system 4, the power system 5, the power battery 6, the supporting legs 7, the condenser 81, the storage battery 82 and the like are all arranged on the frame 1.

The rubber crawler running gear 22 constitutes the running gear 2 of the whole vehicle, and is arranged below the frame 1 for realizing the running function of the whole vehicle. The rubber crawler 22 has strong adaptability to the field environment, and can provide proper traveling speed, trafficability and dynamic property according to the characteristics of different environments, so that the whole vehicle can not only travel on a road, but also travel and work in a non-road environment, and has higher maneuverability, stronger practicability and higher efficiency.

The cab 3 is an operation control center of the whole vehicle, and meets the requirements of personnel on the operation such as walking and operation of the whole vehicle. As can be seen from fig. 1-3, in this embodiment the cab 3 is arranged to the right of the front end of the frame 1 for the riding of a person. The cab 3 is provided with a display, an instrument panel, and vehicle-mounted electric appliances such as an air conditioner. These in-vehicle electrical uses are provided by the battery 82. In this embodiment, the battery 82 is disposed on the left side of the front end of the frame 1. In addition, as shown in fig. 3, in this embodiment, a condenser 81 of the cabin air conditioner is provided outside the cabin 3 and is disposed behind the cabin 3.

The operating system 4 is used to perform job tasks. As shown in fig. 1-3, in this embodiment, the work system 4 includes a boom 41, a hook 42, a basket 43, a drill pipe 44, and a turntable 45. The turntable 45 is provided on the frame 1, and is located between the cab 3 and the power battery 6 in the front-rear direction, and is located in the middle of the frame 1 in the left-right direction. The first end of the boom 41 is connected to the turntable 45 such that the boom 41 can be rotated 360 °. The second end of the boom 41 extends forward. A hook 42 is provided at a second end of the boom 41 for lifting a weight. The hanging basket 43 is detachably arranged at the second end of the hanging arm 41 for a worker to ascend to perform high-altitude operation. A drill rod 44 is provided on a side wall of the boom 41 for performing drilling operations. It can be seen that the operating system 4 of this embodiment can perform a plurality of tasks such as lifting, drilling and overhead operations, and is convenient and flexible to meet the needs of customers for individuation.

The power system 5 is used for providing driving power and realizing power transmission. As shown in fig. 1 to 3, in this embodiment, the power system 5 is an electric power system, which is located at the front end of the frame 1 and is located at the left side of the cab 3, for implementing a power transmission mode including hydraulic transmission and direct driving of the travel motor. In particular, as can be seen from fig. 1-3, in this embodiment, the power system 5 includes a travel motor 51, a motor controller 52, a decelerator 53, an oil tank 54, a first heat sink 55, and a second heat sink 56. The running motor 51 and the first heat dissipation device 55 are sequentially arranged along the front-to-back direction, and the running motor 51 and the first heat dissipation device 55 are located behind the storage battery 82 and close to the left edge of the frame 1. The oil tank 54, the motor controller 52, and the second heat sink 56 are arranged in this order from front to rear, and in the left-right direction, the oil tank 54, the motor controller 52, and the second heat sink 56 are each located between the travel motor 51 and the cab 3. The traveling motor 51 is electrically connected with the motor controller 52 and is in driving connection with the rubber crawler 22 through the speed reducer 53, so that the rubber crawler 22 is driven to move under the control of the motor controller 52 to realize a traveling function. The first heat dissipation device 55 is located behind the walking motor 51, and continuously dissipates heat for the walking motor 51 and the hydraulic system in a water circulation mode. The second heat dissipating device 56 is located on the right side of the first heat dissipating device 55, and is configured to dissipate heat continuously from the speed reducer 53 by using an oil circulation manner. Therefore, under the action of the first heat dissipation device 55 and the second heat dissipation device 56, the heat dissipation can be continuously performed for the traveling motor 51, the speed reducer 53 and the hydraulic system, so that the whole vehicle can maintain stable temperature under the condition of long-time working.

Fig. 4 further shows the structure of the second heat sink 56. As shown in fig. 4, in this embodiment, the second heat dissipating device 56 includes a heat dissipating fan 561, a pumping mechanism 562, a suction pipe 563, a return pipe 564, an overflow pipe 565, and a fan motor 566. The fan blades (not shown) of the cooling fan 561 are in driving connection with the fan motor 566 to rotate under the driving of the fan motor 566 to provide cooling air for cooling the oil in the speed reducer 53. A heat dissipation chamber (not shown) is provided inside the heat dissipation fan 561. The heat dissipation chamber faces the blades of the heat dissipation fan 561 and has an inlet and an outlet for oil of the decelerator 53. The inlet and outlet of the heat radiation chamber are respectively communicated with the outlet and inlet of the decelerator 53 through the oil suction pipe 563 and the oil return pipe 564, so that a circulation flow path through which the oil in the decelerator 53 circulates is formed between the heat radiation fan 561 and the decelerator 53. The oil pumping mechanism 562 is arranged on the circulation flow path to drive the oil in the speed reducer 53 to flow to the heat dissipation cavity through the oil suction pipe 563, and flow back to the speed reducer 53 through the oil return pipe 564 from the heat dissipation cavity after the fan blades cool and dissipate heat. Thus, when the temperature of the oil in the speed reducer 53 is higher, the fan motor 566 is started to rotate the fan blades, the oil pumping mechanism 562 is started to drive the oil to flow in the circulation flow path, the oil can enter the heat dissipation cavity to perform air cooling heat dissipation, and the oil with reduced temperature after heat dissipation can flow back into the speed reducer 53 to be continuously used for gears of the speed reducer 53. Meanwhile, as shown in fig. 4, in this embodiment, an overflow pipe 565 is further provided between the heat dissipation chamber and the decelerator 53 to overflow when necessary.

The power battery 6 is used for providing running power for the whole vehicle. In this embodiment, the power battery 6 is provided with a quick plug interface to be connected with the traveling motor 51 on the engineering vehicle 10 for supplying power to realize electric driving.

As shown in fig. 1-3, in this embodiment, the power battery 6 is disposed at the rear end of the frame 1, specifically behind the turntable 45. At this time, the power battery 6 is located at the rear of the cab 3, the power system 5 and the operating system 4, is located at the tail end of the whole vehicle, and is free from shielding at the rear and the upper side, so that the power battery is conveniently connected with the power conversion device, and the power conversion process is realized.

Fig. 5 further shows the structure of the power battery 6 in this embodiment. As shown in fig. 5, in this embodiment, the power battery 6 can meet the repeated disassembly and assembly requirements, and the installation structure is firm and reliable, and the whole is square, including a cubical case 63 and a plurality of battery cells located in the case 63. A rear wall of the case 63 is provided with a slot 62 serving as the connecting portion 61. The slot 62 is used for inserting an actuating mechanism such as a fork of the power exchange device, so as to realize the engagement of the actuating mechanism and the power battery 6. As can be seen from fig. 5, in this embodiment, two slots 62 are provided on the rear wall of the case 63, and the two slots 62 are spaced apart in the left-right direction to engage with two brackets, so that the power battery 6 can be more stably supported by the power conversion device during the power conversion process.

Because the power battery 6 of this embodiment is located the frame 1 rear end, and the rear and the top of power battery 6 do not all shelter from, simultaneously, be equipped with slot 62 on the back wall of power battery 6, consequently, when need changing power battery 6, the power conversion device can directly insert in slot 62 from the rear, lifts up power battery 6, changes, and is simple convenient.

The supporting leg 7 is arranged on the frame 1 and used for guaranteeing the stability of the whole vehicle. As shown in fig. 1-3, in this embodiment, the front and rear ends of the frame 1 are each provided with a leg 7, such that the work vehicle 10 includes two legs 7 in total. Two legs 7 are located respectively in front of the cab 3 and behind the power battery 6. Thus, the two support legs 7 can support the ground when the engineering vehicle 10 works or changes electricity, and the whole vehicle is effectively kept stable.

It can be seen that this embodiment, by providing the electric drive engineering vehicle 10 with the rubber crawler 22 and the multifunctional working system 4, makes the engineering vehicle 10 become an electric drive multifunctional crawler, which can flexibly meet various working requirements, and has high maneuverability, high practicability and high efficiency.

Meanwhile, the cab 3, the operating system 4, the power system 5 and the power battery 6 of the engineering vehicle 10 are innovatively laid out in the embodiment, so that the overall layout is more compact and reasonable, and particularly, the power battery 6 is arranged at the tail of the frame 1, so that the power battery 6 is convenient to charge, the power battery 6 is convenient to replace, the use convenience is greatly improved, and the power conversion efficiency is effectively improved.

The foregoing description of the exemplary embodiments of the present application is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and scope of the invention.

Claims

1. An engineering vehicle (10), characterized by comprising:

a frame (1);

the travelling mechanism (2) is arranged on the frame (1) and is used for realizing travelling of the engineering vehicle (10);

a cab (3) provided at the front end of the frame (1);

an operating system (4) arranged on the frame (1) and used for executing the task;

the power system (5) comprises a walking motor (51), and the walking motor (51) is in driving connection with the walking mechanism (2); and

the power battery (6), power battery (6) for walking motor (51) power supply, power battery (6) detachably set up in the tail end of frame (1), just the rear and/or the top of power battery (6) do not have and shelter from.

2. The construction vehicle (10) according to claim 1, wherein the power battery (6) is provided with a connection portion (61), and the connection portion (61) is configured to be connected to a power exchanging device, so that the power battery (6) is detached by the power exchanging device.

3. The work vehicle (10) according to claim 2, wherein the connection portion (61) comprises a slot (62).

4. The working vehicle (10) according to claim 2, characterized in that the connection portion (61) is provided on a rear wall of the power battery (6).

5. The working vehicle (10) according to claim 1, wherein the running gear (2) is a crawler running gear (21).

6. The work vehicle (10) according to claim 5, wherein the crawler travel mechanism (21) is a rubber crawler travel mechanism (22).

7. The work vehicle (10) according to claim 1, wherein the work system (4) comprises a boom (41) and further comprises at least one of a hook (42), a basket (43) and a drill rod (44) arranged on the boom (41).

8. The working vehicle (10) according to claim 1, characterized in that the working system (4) is connected to the part of the frame (1) between the cab (3) and the power battery (6).

9. The working vehicle (10) according to claim 1, wherein the power system (5) is arranged at a front end of the frame (1) and is arranged side by side with the cab (3) in the left-right direction.

10. The work vehicle (10) according to any one of claims 1-9, wherein the power system (5) comprises at least one of a first heat dissipating device (55) and a second heat dissipating device (56), the first heat dissipating device (55) being adapted to dissipate heat from the travelling motor (51), the second heat dissipating device (56) being adapted to dissipate heat from oil in a speed reducer (53) connecting the travelling motor (51) and the travelling mechanism (2) for driving of the power system (5).

11. The working vehicle (10) according to claim 10, characterized in that the first heat sink (55) and/or the second heat sink (56) are arranged behind the travel motor (51).

12. The working vehicle (10) according to claim 10, wherein the power system (5) includes a first heat dissipating device (55) and a second heat dissipating device (56), the first heat dissipating device (55) and the second heat dissipating device (56) being arranged side by side in a left-right direction.

13. The work vehicle (10) according to claim 10, wherein the second heat dissipating device (56) includes a heat dissipating fan (561) and an oil pumping mechanism (562), an inlet and an outlet of the heat dissipating fan (561) are connected to an outlet and an inlet of the speed reducer (53), respectively, the oil pumping mechanism (562) drives oil to circulate between the speed reducer (53) and the heat dissipating fan (561), and the heat dissipating fan (561) cools the oil flowing into the heat dissipating fan (561) from the speed reducer (53).

14. The working vehicle (10) according to any one of claims 1-9, wherein the working vehicle (10) comprises a leg (7), the leg (7) being arranged on the frame (1) and being switchable between a deployed state, in which the leg (7) is in contact with the ground for supporting the whole vehicle, and a stowed state.

15. The work vehicle (10) according to any one of claims 1-9, characterized in that the work vehicle (10) is an electric only work vehicle.