CN217299108U

CN217299108U - Full electric driving engineering machinery

Info

Publication number: CN217299108U
Application number: CN202220950976.5U
Authority: CN
Inventors: 辛剑波; 常永胜; 张硕
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-08-26
Anticipated expiration: 2032-04-22

Abstract

The utility model provides a full electric drive engineering machine tool, include: a traveling mechanism; the vehicle body is arranged on the travelling mechanism; the working arm is arranged on the vehicle body; the power supply is connected with the electric drive assembly, the electric drive assembly comprises a first electric drive assembly and a second electric drive assembly, the first electric drive assembly is suitable for driving the walking mechanism to walk, and the second electric drive assembly is suitable for driving the working arm to swing; and the potential energy recovery mechanism is connected with the power supply and is suitable for recovering the descending potential energy of the working arm and charging the power supply. In the full-electric driving engineering machinery, walking and operation are driven through the first electric driving assembly and the second electric driving assembly, so that the actions of all the actuating mechanisms are independent, and the actions are more smooth. Meanwhile, hydraulic pipelines are replaced by electric wires, the line connection relation among all parts is simple, and faults are easy to check. In addition, the descending potential energy of the working arm can be recovered through the potential energy recovery mechanism and is charged to the power supply, so that the energy-saving effect is better.

Description

Full electric driving engineering machinery

Technical Field

The utility model relates to an engineering machine tool technical field, concretely relates to all-electric drive engineering machine tool.

Background

The excavator is a common engineering machine, the current excavator usually adopts hydraulic drive, and the principle is roughly as follows: the diesel engine drives the pilot pump and the hydraulic pump to pump oil, hydraulic oil output by the pilot pump flows into the pilot valve, and the pilot valve is connected with the multi-way valve and can control the position of the valve core. The multi-way valve is connected with actuating mechanisms such as the traveling motor, the movable arm oil cylinder, the arm oil cylinder and the bucket oil cylinder, and hydraulic oil output by the hydraulic pump flows into each actuating mechanism through the multi-way valve. The driver controls the pilot valve, so that the operation of the excavator is controlled.

However, when the excavator works, a plurality of compound actions exist, and the flow distribution of the multi-way valve is difficult. Meanwhile, the hydraulic system pipeline of the hydraulic excavator is very complex, and the hydraulic excavator is difficult to check after hydraulic failure occurs.

In order to solve the above problems, some excavators in the prior art adopt an electric mode, that is, an electric cylinder is used to replace an oil cylinder, so as to drive a working arm to move. However, the electric cylinder consumes more energy, and the storage battery on the excavator is difficult to support the long-time work.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the electric excavator among the prior art's battery power consumptive fast, is difficult to support the defect of the long-time work of electric excavator to a full electric drive engineering machine is provided.

In order to solve the problem, the utility model provides an all-electric drive engineering machine tool, include: a traveling mechanism; the vehicle body is arranged on the travelling mechanism; the working arm is arranged on the vehicle body; the power supply is connected with the electric driving assembly, the electric driving assembly comprises a first electric driving assembly and a second electric driving assembly, the first electric driving assembly is suitable for driving the travelling mechanism to travel, and the second electric driving assembly is suitable for driving the working arm to swing; and the potential energy recovery mechanism is connected with the power supply and is suitable for recovering the descending potential energy of the working arm and charging the power supply.

Optionally, the potential energy recovery mechanism comprises a generator and the power source is a battery.

Optionally, the travelling mechanism comprises a chassis and a track structure arranged on the chassis, and the first electric drive assembly comprises a travelling motor which drives a track wheel of the track structure to rotate.

Optionally, the working arm includes a boom, an arm, and a bucket connected to each other, and the second electric drive assembly includes a boom electric cylinder, an arm electric cylinder, and a bucket electric cylinder, wherein the boom electric cylinder drives the boom to swing with respect to the vehicle body, the arm electric cylinder is adapted to drive the arm to swing with respect to the boom, and the bucket electric cylinder is adapted to drive the bucket to swing with respect to the arm.

Optionally, the vehicle body is rotatably disposed on the running gear, and the electric drive assembly further comprises a third electric drive assembly adapted to drive the vehicle body to rotate relative to the running gear.

Optionally, the third electric drive assembly comprises a rotary electric machine.

Optionally, the potential energy recovery mechanism is further adapted to recover braking potential energy of the vehicle body relative to the running gear and charge the power supply.

Optionally, the all-electric drive engineering machine further comprises a control device, and the control device is connected with the power supply, the electric drive assembly and the potential energy recovery mechanism.

Optionally, the vehicle body comprises a cab, wherein an operating member is arranged in the cab, and the operating member is connected with the control device.

Optionally, the all-electric drive work machine is an excavator.

The utility model has the advantages of it is following:

utilize the technical scheme of the utility model, among the all-electric drive engineering machine tool, walking and operation are driven through first electric drive subassembly and second electric drive subassembly, and then make each actuating mechanism's action independent, accord with the action more smoothly. Meanwhile, hydraulic pipelines are replaced by electric wires, the line connection relation among all parts is simple, and faults are easy to check. Meanwhile, the descending potential energy of the working arm can be recovered through the potential energy recovery mechanism and the power supply is charged, so that the energy-saving effect of the fully electric driving engineering machinery is better, and the power supply can enable the electric driving assembly to work for a longer time. Consequently the technical scheme of the utility model the battery that has solved the electric excavator among the prior art is power consumptive fast, is difficult to support the defect of the long-time work of electric excavator.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of an all-electric drive construction machine according to the present invention;

FIG. 2 illustrates a schematic connection diagram of a battery, an electric drive assembly, and a control device of the all-electric work machine of FIG. 1; and

fig. 3 shows a schematic diagram of the energy recovery of the all-electric work machine of fig. 1.

Description of reference numerals:

10. a traveling mechanism; 20. a vehicle body; 21. a cab; 30. a working arm; 31. a movable arm; 32. a bucket rod; 33. a bucket; 40. a power source; 50. an electric drive assembly; 51. a traveling motor; 52. a boom electric cylinder; 53. a bucket rod electric cylinder; 54. a bucket electric cylinder; 55. a rotary motor; 60. and a control device.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the all-electric engineering machine according to the present embodiment includes a traveling mechanism 10, a vehicle body 20, a working arm 30, a power source 40, an electric drive assembly 50, and a potential energy recovery mechanism. The vehicle body 20 is provided on the traveling mechanism 10. The working arm 30 is provided on the vehicle body 20. The power source 40 is electrically connected to the electric drive assembly 50, and the electric drive assembly 50 includes a first electric drive assembly and a second electric drive assembly. The first electric driving assembly is suitable for driving the walking mechanism 10 to walk, and the second electric driving assembly is suitable for driving the working arm 30 to swing. The potential energy recovery mechanism is electrically connected to the power source 40, and is adapted to recover the lowering potential energy of the working arm 30 and charge the power source 40.

Utilize the technical scheme of this embodiment, among the all-electric drive engineering machine tool, walking and operation are driven through first electric drive subassembly and second electric drive subassembly, and then make each actuating mechanism's action independent, accord with the action more smoothly. Meanwhile, the hydraulic pipeline is replaced by an electric circuit, the circuit connection relation among all parts is simple, and faults are easy to check. Meanwhile, the descending potential energy of the working arm 30 can be recovered through the potential energy recovery mechanism, and the power supply 40 is charged by using the recovered potential energy, so that the energy saving effect of the fully electric driving engineering machine is better, and the power supply 40 can enable the electric driving assembly 50 to work for a longer time. Therefore, the technical scheme of the embodiment overcomes the defects that the storage battery of the electric excavator in the prior art consumes fast power and is difficult to support the long-time work of the electric excavator.

It should be noted that the traveling mechanism 10 is used to drive the engineering machine to travel, and the traveling mechanism may be a traveling wheel, a crawler belt, or the like.

The work arm 30 is used for performing work, such as excavation work. When the working arm 30 is descending, a descending potential energy is generated since the working arm 30 has a heavy weight. The potential energy recovery mechanism can recover the descending potential energy and convert the descending potential energy into electric energy to charge the battery, so that the energy-saving effect is achieved.

Preferably, in the technical solution of this embodiment, the potential energy recovery mechanism includes a generator. Specifically, the gravitational potential energy of the lowering of the working arm 30 can be converted into the rotation of the rotor of the generator by the transmission mechanism, so that the generator generates electricity.

In this embodiment, the power source 40 is a storage battery, and the generator is electrically connected to the storage battery, so that the storage battery can be charged. Furthermore, the storage battery is also used as an energy storage mechanism to store the power supply recovered by the potential energy recovery mechanism.

As shown in fig. 1, in the solution of the present embodiment, the traveling mechanism 10 includes a chassis and a crawler structure provided on the chassis. The first electric drive assembly comprises a walking motor 51, and the walking motor 51 drives the crawler wheels of the crawler structure to rotate. Specifically, the crawler structure includes crawler wheels, a crawler track, and the like. The rotating shaft of the traveling motor 51 is connected to the crawler wheel and can drive the crawler wheel to rotate.

Of course, the traveling mechanism 10 may be other conventional structures such as a traveling wheel.

As shown in fig. 1, in the present embodiment, the work arm 30 includes a boom 31, an arm 32, and a bucket 33 connected to each other. The second electric drive assembly includes a boom electric cylinder 52, an arm electric cylinder 53, and a bucket electric cylinder 54, wherein the boom electric cylinder 52 drives the boom 31 to swing with respect to the vehicle body 20, the arm electric cylinder 53 is adapted to drive the arm 32 to swing with respect to the boom 31, and the bucket electric cylinder 54 is adapted to drive the bucket 33 to swing with respect to the arm 32.

Specifically, a first end of the boom 31 is hinged to the vehicle body 20, a first end of the arm 32 is hinged to a second end of the boom 31, and the bucket 33 is hinged to a second end of the arm 32. The cylinder body of the boom electric cylinder 52 is hinged to the vehicle body 20, and the push rod of the boom electric cylinder 52 is hinged to the boom. The cylinder body of the electric bucket rod cylinder 53 is hinged to the boom 31, and the push rod of the electric bucket rod cylinder 53 is hinged to the bucket rod 32. The cylinder body of the bucket electric cylinder 54 is hinged to the arm 32, and the push rod of the bucket electric cylinder 54 is hinged to the bucket. The excavation work of the bucket 33 can be performed by the cooperation of the boom electric cylinder 52, the arm electric cylinder 53, and the bucket electric cylinder 54.

Further, the electric cylinder is a mechanism for converting electric energy into movement of the push rod. Specifically, the electric cylinder converts the rotation of the motor shaft of the motor into the linear movement of the push rod through a lead screw nut mechanism. In this embodiment, the boom electric cylinder 52, the arm electric cylinder 53, and the bucket electric cylinder 54 work independently without performing complicated flow rate distribution in the conventional excavator. Meanwhile, the circuit connection of the electric cylinder is simple, and the troubleshooting is easy when a fault occurs.

As shown in fig. 1 and fig. 2, in the solution of the present embodiment, the vehicle body 20 is rotatably disposed on the running gear 10, and the electric drive assembly 50 further includes a third electric drive assembly, which is adapted to drive the vehicle body 20 to rotate relative to the running gear 10. Specifically, the vehicle body 20 can be rotated with respect to the traveling mechanism 10, and the orientation of the bucket 33 can be adjusted.

Preferably, the third electric drive assembly comprises a rotary electric motor 55. Specifically, the turning motor 55 is provided on the base of the traveling mechanism 10, and a motor shaft of the turning motor 55 is connected to the vehicle body 20. When the rotary motor 55 is operated, the vehicle body 20 is rotated relative to the traveling mechanism 10.

As shown in fig. 3, in the solution of the present embodiment, the potential energy recovery mechanism is further adapted to recover the braking potential energy of the vehicle body 20 relative to the running gear 10 and charge the power source 40. Specifically, when the vehicle body 20 rotates relative to the running mechanism 10, the vehicle body 20 needs to be braked. The potential energy generated by braking the vehicle body 20 can be recovered by the potential energy recovery mechanism described above and the power source 40 is charged, thereby further improving the energy saving effect.

As shown in fig. 2, in the technical solution of the present embodiment, the all-electric-drive engineering machine further includes a control device 60, and the control device 60 is electrically connected to the power source 40, the electric drive assembly 50, and the potential energy recovery mechanism. Specifically, the controller 60 controls power on and off of the travel motor 51, the boom electric cylinder 52, the arm electric cylinder 53, the bucket electric cylinder 54, and the swing motor 55 to control the actuators to operate independently, thereby completing the excavation work.

As shown in fig. 1, in the present embodiment, the vehicle body 20 includes a cab 21, and an operating element is disposed in the cab and electrically connected to the control device 60. Specifically, the operating member may be an operating lever or an operating panel, and the driver may control the operation of each actuator through the operating member, thereby controlling the construction machine.

Preferably, the all-electric drive engineering machine in the embodiment is an excavator.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. An all-electric drive construction machine, comprising:

a traveling mechanism (10);

a vehicle body (20) provided on the traveling mechanism (10);

an operating arm (30) provided to the vehicle body (20);

a power source (40) and an electric drive assembly (50), wherein the power source (40) is electrically connected with the electric drive assembly (50), the electric drive assembly (50) comprises a first electric drive assembly and a second electric drive assembly, the first electric drive assembly is suitable for driving the walking mechanism (10) to walk, and the second electric drive assembly is suitable for driving the working arm (30) to swing;

the potential energy recovery mechanism is electrically connected with the power supply (40), and is suitable for recovering the descending potential energy of the working arm (30) and charging the power supply (40).

2. All-electric power driven working machine according to claim 1, wherein the potential energy recovery mechanism comprises a generator and the power source (40) is a battery.

3. All-electric work machine according to claim 1 or 2, wherein the travelling mechanism (10) comprises a chassis and a track structure arranged on the chassis, and the first electric drive assembly comprises a travelling motor (51), and the travelling motor (51) drives track wheels of the track structure to rotate.

4. The all-electric engineering machine according to claim 1 or 2, wherein the working arm (30) comprises a boom (31), an arm (32) and a bucket (33) which are connected with each other, and the second electric drive assembly comprises a boom electric cylinder (52), an arm electric cylinder (53) and a bucket electric cylinder (54), wherein the boom electric cylinder (52) drives the boom (31) to swing relative to the vehicle body (20), the arm electric cylinder (53) is adapted to drive the arm (32) to swing relative to the boom (31), and the bucket electric cylinder (54) is adapted to drive the bucket (33) to swing relative to the arm (32).

5. All-electric drive construction machine according to claim 1 or 2, wherein the vehicle body (20) is rotatably arranged on the running gear (10), the electric drive assembly (50) further comprising a third electric drive assembly adapted to drive the vehicle body (20) in rotation relative to the running gear (10).

6. All-electric drive working machine according to claim 5, characterized in that the third electric drive assembly comprises an electric rotating machine (55).

7. All-electric driven working machine according to claim 5, characterized in that the potential energy recovery mechanism is further adapted to recover the braking potential energy of the vehicle body (20) relative to the running gear (10) and to charge the power source (40).

8. All-electric driven working machine according to claim 1 or 2, characterized in that it further comprises a control device (60), said control device (60) being connected to said power source (40), said electric drive assembly (50) and said potential energy recovery mechanism.

9. All-electric engineering machine according to claim 8, wherein the vehicle body (20) comprises a cab (21) in which operating elements are arranged, said operating elements being connected to the control device (60).

10. All-electric driven working machine according to claim 1 or 2, characterized in that it is an excavator.