CN209921047U - Pure electric heavy transport engineering vehicle - Google Patents

Abstract

The utility model discloses a pure electric heavy-duty transportation engineering vehicle, which comprises a vehicle frame, an axle assembly, a suspension assembly, a steering assembly, a braking assembly, an auxiliary power assembly, a power supply assembly and a controller. The axle assembly includes at least one The first driven axle, at least one second driven axle and at least one driving axle define the front end in the forward direction of the pure electric heavy-duty transportation engineering vehicle, the first driven axle is arranged at the front end of the frame, and the second driven axle is arranged at the front end of the frame. The moving axle is arranged at the rear end of the frame, and the driving axle is located between the first driven axle and the second driven axle. The pure electric heavy-duty transportation engineering vehicle is pure electric drive, has the characteristics of energy saving and environmental protection, and greatly reduces potential safety hazards. In addition, by reasonably arranging the positions of the driving axle, the first driven axle and the second driven axle , and is equipped with drive components at each drive wheel of the drive single axle, which not only simplifies the drive structure, but also enables the drive of heavy-duty transportation engineering vehicles.

Description

A pure electric heavy-duty transportation engineering vehicle

technical field

The utility model relates to the field of electric engineering vehicles, in particular to a pure electric heavy-duty transportation engineering vehicle.

Background technique

Heavy transport engineering vehicle is a platform for transporting heavy goods in designated places, which is characterized by low travel speed and heavy cargo. Commonly used today are dock heavy cargo transport vehicles, shipyard hull sectional transport vehicles, steel mill hot metal transport vehicles, etc. The above models belong to heavy-duty hydraulic flatbed trucks. The energy conversion process of the main operating system is engine mechanical energy → hydraulic energy → mechanical energy. Electrical system, driving operating system, etc.; thus, the above-mentioned heavy-duty hydraulic flatbed truck is powered by fuel.

However, although the above-mentioned fuel-powered heavy-duty transportation engineering vehicles can basically meet the current requirements in terms of performance, they still have the following defects:

1. Excessive exhaust emissions of fuel-powered transportation engineering vehicles are easy to pollute the atmospheric environment, and with the gradual improvement of environmental protection requirements, the existing technical level is difficult to meet the latest environmental protection requirements;

2. The whole vehicle carries a large amount of diesel oil, engine oil and hydraulic oil, which will bring serious safety hazards when it is operated in the open fire area of the factory;

3. During maintenance, the replacement, storage, leakage and cleaning of various oils will cause serious environmental pollution to the factory area, workshop and personnel;

4. The fuel cost of heavy-duty transportation engineering vehicles powered by fuel is extremely high, and due to the cumbersome hydraulic system, it is difficult to maintain the components of the hydraulic system in the later stage, and the maintenance cost is high.

Therefore, there is an urgent need to solve the above problems.

Utility model content

The purpose of the present utility model is to solve the above problems, and provide a pure electric heavy-duty transportation engineering vehicle, so as to solve the problems of large exhaust emission, high safety hazard and high maintenance cost of the existing fuel-powered transportation engineering vehicle.

The purpose of this utility model is to realize through the following technical solutions:

A pure electric heavy-duty transportation engineering vehicle includes a frame, an axle assembly, a suspension assembly, a steering assembly, a braking assembly, an auxiliary power assembly, a power supply assembly and a controller, and the axle assembly includes at least one first driven vehicle Axle, at least one second driven axle and at least one driving axle, the front end is defined in the forward direction of the pure electric heavy-duty transportation engineering vehicle, the first driven axle is arranged at the front end of the frame, and the second driven axle is arranged at the rear end of the frame, the drive axle is located between the first driven axle and the second driven axle;

The drive axle includes two drive single axles, the two drive single axles are symmetrically arranged on both sides of the frame, the drive single axle is connected with the vehicle frame through a suspension assembly, and the drive single axle includes a first drive axle. an axle housing, two drive wheels symmetrically arranged on both sides of the first axle housing, and two drive assemblies symmetrically arranged on both sides of the first axle housing, the drive components comprising a wheel-side drive motor and a wheel-side reducer, the The wheel side drive motor is electrically connected with the power supply component, the output shaft of the wheel side drive motor is drivingly connected with the input shaft of the wheel side reducer, and the output shaft of the wheel side reducer is drivingly connected with the driving wheel located on the same side of the first axle housing.

The first driven axle and the second driven axle have the same structure, and specifically include two driven single axles, the two driven single axles are symmetrically arranged on both sides of the frame, and the driven single axles pass through The suspension assembly is connected with the frame, and the driven single axle includes a second axle housing, an axle shaft, and two driven wheels symmetrically arranged on both sides of the axle shaft.

As a preferred solution of the present invention, the suspension assembly includes a support arm, a balance arm, and a suspension cylinder, the upper end of the support arm is connected to the frame through a slewing bearing, and the lower end of the support arm is connected to the balance arm The first end is hinged, the upper end of the suspension cylinder is hinged on the support arm, and the lower end of the suspension cylinder is hinged on the balance arm. end.

As a preferred solution of the present invention, the steering assembly includes a first steering cylinder, a second steering cylinder, a steering plate, a first steering swing arm, a second steering swing arm, a third steering swing arm, and a fourth steering swing The middle of the steering plate is hinged to the frame, the first steering swing arm and the second steering swing arm are distributed in one-to-one correspondence with the two driven single axles, and the first steering swing arm The middle of the steering wheel is fixedly connected with the support arm of the corresponding driven single-axle suspension assembly, and one end of the first steering swing arm is hingedly connected with the output end of the first steering cylinder, and the other end of the first steering swing arm is hingedly connected. It is hinged with the front end of the first link, the rear end of the first link is hinged on one side of the front end of the steering plate, and the middle of the second steering swing arm is connected to the support of the corresponding driven single-axle suspension assembly The arm is fixedly connected, and one end of the second steering swing arm is hingedly connected to the output end of the second steering oil cylinder, and the other end of the second steering swing arm is hinged with the front end of the second connecting rod, and the second connecting rod is hinged. The rear end of the steering plate is hinged on the other side of the front end of the steering plate, the third steering swing arm and the fourth steering swing arm are distributed one-to-one with the two driving single axles, one end of the third steering swing arm It is fixedly connected with the support arm of the corresponding driving single-axle suspension assembly, and the other end of the third steering swing arm is hinged with one end of the third link, and the other end of the third link is hinged at a rear end of the steering plate. side, one end of the fourth steering swing arm is fixedly connected with the support arm of the corresponding driving single-axle suspension assembly, and the other end of the fourth steering swing arm is hinged with one end of the fourth link, the fourth connection The other end of the rod is hinged on the other side of the rear end of the steering plate.

As a preferred solution of the present invention, the brake assembly includes a plurality of brake groups, one driven single axle is arranged with one brake group, and each brake group includes two symmetrically arranged brakes.

As a preferred solution of the present invention, the brake is a wet brake.

As a preferred solution of the present invention, the auxiliary power assembly includes a first hydraulic pump for providing power to the suspension oil cylinder, the first steering oil cylinder, and the second steering oil cylinder, and a second hydraulic pump for providing power to the brake. A pump and a hydraulic motor, the first hydraulic pump and the second hydraulic pump are both driven by a hydraulic motor, and the hydraulic motor is electrically connected to the power supply assembly.

As a preferred solution of the present invention, the power supply assembly includes a battery pack and a high-voltage power distribution box of the battery pack, the battery pack is electrically connected to the high-voltage power distribution box of the battery pack, and the high-voltage power distribution box of the battery pack is connected to the control electrical connection.

The beneficial effect of the utility model is that the pure electric heavy-duty transportation engineering vehicle takes the battery pack as the power, and drives the driving wheels to rotate through the wheel side drive motor to realize the conversion of electrical energy into mechanical energy, and the steering components, suspension components, brake The components are all driven by hydraulic motors to convert electrical energy into hydraulic energy, and then into mechanical energy. The whole vehicle is driven by pure electric power, which has the characteristics of energy saving and environmental protection, and greatly reduces potential safety hazards. The positions of the first driven axle and the second driven axle, and each driving wheel of the single driving axle is equipped with driving components, which not only simplifies the driving structure, but also enables the driving of heavy-duty transportation engineering vehicles. The structure is simple and easy to implement. .

Description of drawings

Fig. 1 is a front view of a pure electric heavy-duty transportation engineering vehicle;

Fig. 2 is a schematic cross-sectional view of the pure electric heavy-duty transportation engineering vehicle shown in Fig. 1 at A-A;

Fig. 3 is a schematic cross-sectional view of the pure electric heavy-duty transport engineering vehicle shown in Fig. 1 at B-B;

Fig. 4 is a bottom view of a pure electric heavy-duty transport engineering vehicle;

Fig. 5 is an enlarged view of a pure electric heavy-duty transport engineering vehicle shown in Fig. 4 at place A;

FIG. 6 is a schematic structural diagram of a suspension assembly.

In the picture:

1. Frame; 2. Suspension components; 21. Support arm; 22. Balance arm; 23. Suspension cylinder; 24. Slewing bearing; 3. Driven single axle; 31. Axle; 32. Driven wheel; 33. Brake; 4. Drive single axle; 41. First axle housing; 42. Wheel drive motor; 43, Wheel speed reducer; 44, Drive wheel; 5. Steering assembly; 501, First steering cylinder; 502, The second steering cylinder; 503, the steering plate; 504, the first steering swing arm; 505, the second steering swing arm; 506, the third steering swing arm; 507, the fourth steering swing arm; 508, the first connecting rod; 509 , the second connecting rod; 510, the third connecting rod; 511, the fourth connecting rod.

Detailed ways

The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments. It can be understood that the embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Referring to FIGS. 1 to 6 , in this embodiment, a pure electric heavy-duty transportation engineering vehicle includes a frame 1, an axle assembly, a suspension assembly 2, a steering assembly 5, a braking assembly, and an auxiliary power assembly , a power supply assembly and a controller, the axle assembly includes a first driven axle, two second driven axles and a driving axle, and the front end is defined by the forward direction of the pure electric heavy-duty transportation engineering vehicle. The above one The first driven axle, one driving axle, and two second driven axles are sequentially arranged from the front end to the rear end of the frame 1 .

The drive axle includes two drive single axles 4 , the two drive single axles 4 are symmetrically arranged on both sides of the vehicle frame 1 , and the drive single axle 4 is connected with the vehicle frame 1 through the suspension assembly 2 . The single drive axle 4 includes a first axle housing 41 , two drive wheels 44 symmetrically arranged on both sides of the first axle housing 41 and two drive assemblies symmetrically arranged on both sides of the first axle housing 41 , and the driving components include wheels A side drive motor 42 and a wheel side reducer 43, the wheel side drive motor 42 is electrically connected with the power supply assembly, the output shaft of the wheel side drive motor 42 is drivingly connected with the input shaft of the wheel side reducer 43, and the wheel side reducer 43 The output shaft is connected to the drive wheel 44 on the same side of the first axle housing 41 in a transmission connection; in this embodiment, the wheel drive motor 42 is a permanent magnet synchronous motor, which has a wide range of rated voltages, high power and high torque. High speed, light weight, small size and so on.

The first driven axle and the second driven axle have the same structure, and specifically include two driven single axles 3 , and the two driven single axles 3 are symmetrically arranged on both sides of the frame 1 . The single axle 3 is connected to the frame 1 through the suspension assembly 2 , and the driven single axle 3 includes a second axle housing, an axle shaft 31 , and two driven wheels 32 symmetrically arranged on both sides of the axle shaft 31 .

In this embodiment, the suspension assembly 2 includes a support arm 21, a balance arm 22, and a suspension cylinder 23. The upper end of the support arm 21 is connected to the vehicle frame 1 through a slewing bearing 24, and the lower end of the support arm 21 is connected to the balancer The first end of the arm 22 is hinged, the upper end of the suspension cylinder 23 is hinged on the support arm 21, and the lower end of the suspension cylinder 23 is hinged on the balance arm 22, the driving single axle 4/driven single axle 3 is installed at the second end of the balance arm 22; the support arm 21, the balance arm 22 and the suspension cylinder 23 of the above-mentioned suspension assembly 2 form a triangular structure, and the height adjustment is realized by the expansion and contraction of the suspension cylinder 23; The second end is hinged at the center of the first axle housing 41/the center of the second axle housing, so that the left and right swing can be realized, so that the driving wheel 44/the driven wheel 32 can adapt to the lateral uneven road surface.

In this embodiment, the steering assembly 5 includes a first steering cylinder 501, a second steering cylinder 502, a steering plate 503, a first steering swing arm 504, a second steering swing arm 505, a third steering swing arm 506, and a fourth steering swing arm Arm 507, the middle of the steering plate 503 is hinged on the frame 1, the first steering swing arm 504, the second steering swing arm 505 and the two driven single axles 3 are distributed in one-to-one correspondence, so The middle of the first steering swing arm 504 is fixedly connected with the support arm 21 of the corresponding driven single axle 3 suspension assembly 2 , and one end of the first steering swing arm 504 is hinged with the output end of the first steering cylinder 501 The other end of the first steering swing arm 504 is hinged to the front end of the first link 508, the rear end of the first link 508 is hinged to one side of the front end of the steering plate 503, and the second steering swing The middle of the arm 505 is fixedly connected with the support arm 21 of the corresponding driven single-axle 3 suspension assembly 2, and one end of the second steering swing arm 505 is hingedly connected with the output end of the second steering cylinder 502. The other end of the second steering swing arm 505 is hinged with the front end of the second link 509, and the rear end of the second link 509 is hinged on the other side of the front end of the steering plate 503. The third steering swing arm 506, the first The four steering swing arms 507 are distributed in one-to-one correspondence with the two driving single axles 4 , one end of the third steering swing arm 506 is fixedly connected with the supporting arm 21 of the suspension assembly 2 of the corresponding driving single axle 4 , and the The other end of the third steering swing arm 506 is hinged to one end of the third link 510, the other end of the third link 510 is hinged to one side of the rear end of the steering plate 503, and one end of the fourth steering swing arm 507 is hinged to one end of the third link 510. The support arm 21 of the corresponding driving single axle 4 suspension assembly 2 is fixedly connected, and the other end of the fourth steering swing arm 507 is hinged with one end of the fourth link 511, and the other end of the fourth link 511 is hinged at the The other side of the rear end of the steering plate 503 .

In this embodiment, in order to improve the flexibility of steering, a steering assembly 5 is arranged between the first driven axle and the driving axle, and a steering assembly 5 of the same structure is arranged between the two second driven axles, and further Both the driving wheels 44 and the driven wheels 32 can be steered.

In this embodiment, the brake assembly includes three brake groups, one driven single axle 3 is arranged with one brake group, each brake group includes two symmetrically arranged brakes, and the brakes are wet brakes; this embodiment In the example, a parking brake is provided on the second driven axle adjacent to the drive axle.

In this embodiment, the auxiliary power assembly includes a first hydraulic pump for providing power to the suspension cylinder 23, the first steering cylinder 501, and the second steering cylinder 502, a second hydraulic pump for providing power to the brake, and a hydraulic motor , the first hydraulic pump and the second hydraulic pump are both driven by a hydraulic motor, and the hydraulic motor is electrically connected to the power supply assembly; specifically, the suspension cylinder 23 and the two first steering cylinders 501 for steering and the second steering cylinder 502 are connected in parallel. When the vehicle is running, the first hydraulic pump supplies oil to the first steering cylinder 501 and the second steering cylinder 502 for steering to provide steering force. When the vehicle is stationary, the first hydraulic pump The pump supplies oil to the suspension cylinder 23 to provide lifting force, so that the use of the suspension assembly 2 and the steering assembly 5 does not interfere with each other; and in this embodiment, since the second hydraulic pump for powering the brake is relatively small Therefore, the first hydraulic pump and the second hydraulic pump can be driven to work together with one hydraulic motor at the same time.

In this embodiment, the power supply assembly includes a battery pack and a battery pack high-voltage power distribution box, the battery pack is electrically connected to the battery pack high-voltage power distribution box, and the battery pack high-voltage power distribution box is electrically connected to the controller.

The above embodiments only illustrate the basic principles and characteristics of the present utility model, the present utility model is not limited by the above-mentioned embodiments, and under the premise of not departing from the spirit and scope of the present utility model, the present utility model also has various changes and changes. Variations and modifications fall within the scope of the claimed invention. The claimed scope of the utility model is defined by the appended claims.

Claims (7)

1. The utility model provides a electricelectric moves heavy transportation engineering car, includes frame, axle subassembly, suspension subassembly, turns to subassembly, braking subassembly, auxiliary power subassembly, power supply unit spare and controller, its characterized in that: the axle assembly comprises at least one first driven axle, at least one second driven axle and at least one driving axle, the front end is defined by the advancing direction of the pure electric heavy transport engineering vehicle, the first driven axle is arranged at the front end of the frame, the second driven axle is arranged at the rear end of the frame, and the driving axle is positioned between the first driven axle and the second driven axle;

the driving axle comprises 2 driving single axles, the 2 driving single axles are symmetrically arranged on two sides of the frame, the driving single axles are connected with the frame through suspension assemblies, each driving single axle comprises a first axle housing, 2 driving wheels symmetrically arranged on two sides of the first axle housing and 2 driving assemblies symmetrically arranged on two sides of the first axle housing, each driving assembly comprises a wheel-side driving motor and a wheel-side speed reducer, each wheel-side driving motor is electrically connected with a power supply assembly, an output shaft of each wheel-side driving motor is in transmission connection with an input shaft of each wheel-side speed reducer, and an output shaft of each wheel-side speed reducer is in transmission connection with the driving wheels on the same side of the first axle housing;

first driven axle, the driven axle structure of second are the same to specifically include 2 driven single axles, 2 driven single axle symmetrical arrangement in the frame both sides, driven single axle passes through the suspension subassembly and links to each other with the frame, driven single axle includes second axle housing, axle, 2 symmetrical arrangement in the driven wheel of axle both sides.

2. A pure electric heavy transport vehicle according to claim 1, characterized in that: the suspension assembly comprises a supporting arm, a balance arm and a suspension oil cylinder, the upper end of the supporting arm is connected with the frame through a slewing bearing, the lower end of the supporting arm is hinged with the first end of the balance arm, the upper end of the suspension oil cylinder is hinged on the supporting arm, the lower end of the suspension oil cylinder is hinged on the balance arm, and the driving single axle/driven single axle is installed at the second end of the balance arm.

3. A pure electric heavy transport vehicle according to claim 2, characterized in that: the steering assembly comprises a first steering oil cylinder, a second steering oil cylinder, a steering plate, a first steering swing arm, a second steering swing arm, a third steering swing arm and a fourth steering swing arm, the middle of the steering plate is hinged on the frame, the first steering swing arm and the second steering swing arm are distributed in a one-to-one correspondence manner with the 2 driven single axles, the middle of the first steering swing arm is fixedly connected with a supporting arm of the corresponding driven single axle suspension assembly, one end of the first steering swing arm is hinged with the output end of the first steering oil cylinder, the other end of the first steering swing arm is hinged with the front end of a first connecting rod, the rear end of the first connecting rod is hinged on one side of the front end of the steering plate, the middle of the second steering swing arm is fixedly connected with the supporting arm of the corresponding driven single axle suspension assembly, and one end of the second steering swing arm is hinged with the output end of the second steering oil cylinder, the other end that the second turned to the swing arm is articulated with the front end of second connecting rod, the rear end of second connecting rod is articulated at the opposite side of the front end of deflector, the third turns to the swing arm, the fourth turns to the swing arm and 2 drive single axle one-to-one distribute, the one end that the third turned to the swing arm and the support arm fixed connection that the drive single axle that corresponds hung the subassembly, just the other end that the third turned to the swing arm is articulated with the one end of third connecting rod, the other end of third connecting rod articulates one side at the deflector rear end, the one end that the fourth turned to the swing arm and the support arm fixed connection that the drive single axle that corresponds hung the subassembly, just the other end that the fourth turned to the swing arm is articulated with the one end of fourth connecting rod, the other end of fourth connecting rod articulates the opposite side at the deflector rear end.

4. A pure electric heavy transport vehicle according to claim 3, characterized in that: the brake assembly comprises a plurality of brake sets, wherein 1 brake set is arranged on 1 driven single axle, and each brake set comprises 2 brakes which are symmetrically arranged.

5. A pure electric heavy transport vehicle according to claim 4, characterized in that: the brake is a wet brake.

6. A pure electric heavy transport vehicle according to claim 5, characterized in that: the auxiliary power assembly comprises a first hydraulic pump, a second hydraulic pump and a hydraulic motor, wherein the first hydraulic pump is used for providing power for the suspension oil cylinder, the first steering oil cylinder and the second steering oil cylinder, the second hydraulic pump is used for providing power for the brake, the first hydraulic pump and the second hydraulic pump are driven by the hydraulic motor, and the hydraulic motor is electrically connected with the power supply assembly.

7. A pure electric heavy transport vehicle according to any of claims 1 to 6, characterized in that: the power supply assembly comprises a battery pack and a battery pack high-voltage distribution box, the battery pack is electrically connected with the battery pack high-voltage distribution box, and the battery pack high-voltage distribution box is electrically connected with the controller.

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