CN220847810U - Power supply device and electric excavator - Google Patents

Abstract

The utility model relates to the field of working machinery, and provides a power supply device and an electric excavator. A power supply device comprising: the first cable is used for being electrically connected with the power distribution device; the cable drum is arranged on the bulldozer assembly, is provided with a cable inlet port and a cable outlet port, and is connected with the first cable and used for winding and unwinding the first cable; and two ends of the second cable are respectively connected with the cable leading-out port and the electric appliance of the excavator. By arranging the cable drum on the blade assembly, i.e. the cable drum is connected to the travelling chassis of the excavator by the blade assembly, since the blade assembly is of self-construction, the cable drum is arranged on the blade assembly with less modification to the structure of the excavator itself and therefore less cost than if the cable drum were mounted on the travelling chassis by a dedicated mounting frame.

Description

Power supply device and electric excavator

Technical Field

The utility model relates to the technical field of working machinery, in particular to a power supply device and an electric excavator.

Background

The existing excavator is divided into a fuel oil driven excavator and an electric driven excavator according to different driving modes, the fuel oil driven excavator needs to be added with diesel energy at regular intervals, the energy consumption is high, tail gas generated by combustion pollutes the environment, and noise generated in the operation process of an engine is large. Meanwhile, diesel oil driving generally has the defects of difficult low-temperature starting, insufficient power and the like in high-altitude areas or insufficient combustion caused by oxygen deficiency in tunnels.

In order to solve the problems, electric excavators are gradually developed, some electric excavators usually adopt a form of a cable external power supply, but most electric excavators are not provided with a cable winding and unwinding device, so that the electric excavators are inconvenient to move in the working process of equipment, meanwhile, the cable is dragged on the ground for a long time, the abrasion of the cable is accelerated, and the risks of rolling the cable by a machine and the like exist.

In order to solve the problem of cable wear, in the related art, an electric excavator is provided with a winding and unwinding device for winding and unwinding cables, the winding and unwinding device is required to be installed on a specially designed installation frame, and the installation frame is usually welded with a walking chassis of the electric excavator, so that the structure of the excavator is greatly changed, and the manufacturing cost is high.

Disclosure of utility model

The utility model provides a power supply device and an electric excavator, which are used for solving the defect that the structure of the excavator is changed greatly because a special mounting frame is required to be arranged for mounting a cable drum on a walking chassis in the related art, and realizing the effect of mounting the cable drum based on the structure of the excavator.

The utility model provides a power supply device for supplying power to an excavator provided with a bulldozer blade assembly, comprising:

the first cable is used for being electrically connected with the power distribution device;

the cable drum is arranged on the bulldozer assembly and is provided with a cable inlet port and a cable outlet port, the cable inlet port is connected with the first cable, and the cable drum is used for winding and unwinding the first cable;

and two ends of the second cable are respectively connected with the cable leading-out port and the electric appliance of the excavator.

According to the power supply device provided by the utility model, the excavator is provided with the power supply interface connected with the electric appliance, the second cable is detachably connected with the power supply interface, and the cable drum is detachably arranged on the bulldozer blade assembly. By detachably connecting the second cable to the power interface while detachably connecting the cable drum to the blade assembly, the excavator can be allowed to freely switch between the charging mode of operation and the tug mode of operation.

According to the power supply device provided by the utility model, the power supply device further comprises a charging gun which is matched with the power supply interface, and the second cable is connected with the power supply interface through the charging gun. Based on this, the operator can directly hold the rifle that charges, makes rifle and the power supply interface of charging insert or break away from, and the operation is more swift, and it is more convenient to use.

According to the power supply device provided by the utility model, the power supply device further comprises a bearing seat, the bearing seat is connected with the cab of the excavator, the second cable is connected with the bearing seat, and the connection position of the second cable and the bearing seat is arranged between two ends of the second cable. Through the position of connecting bearing seat between the both ends of second cable, at the excavator gyration in-process, the atress point of second cable shifts to the junction between bearing seat and the second cable, and not falls in the junction of charging gun and the interface that charges that the structure is weak, has reduced the atress between charging gun and the power supply interface to reach the effect of protection charging gun and power supply interface.

According to the power supply device provided by the utility model, the bearing seat is detachably connected with the cab, and/or the second cable is detachably connected with the bearing seat. The second cable is detachably connected with the bearing seat, and can be detached from the bearing seat in a pure electric operation mode. Through bearing seat and driver's cabin detachable connection, under pure electric mode, can be with bearing seat from the driver's cabin dismantlement to simplify the structure of excavator, optimize whole weight.

According to the power supply device provided by the utility model, the power supply device further comprises a mounting seat, and the cable drum is connected with the bulldozer blade assembly through the mounting seat. The cable drum is mounted on the bulldozer assembly through the mounting seat, and the mounting seat is respectively in butt joint with the cable drum and the bulldozer assembly, so that the problem that the mounting position of the cable drum is limited by the size of the mounting surface of the bulldozer assembly can be solved, and the cable drum can have a more proper mounting position on the bulldozer assembly.

According to the power supply device provided by the utility model, the mounting seat is detachably connected with the bulldozer blade assembly. By the arrangement, the mounting seat can be detached from the bulldozer blade assembly in the pure electric working mode, so that the structure of the bulldozer blade assembly is simplified, all original functions of the bulldozer blade assembly are restored, and the weight of the bulldozer blade assembly is reduced.

According to the power supply device provided by the utility model, the bulldozer blade assembly comprises a pair of arm frames and a blade, wherein the pair of arm frames are connected with the blade, and the mounting seat is connected with the pair of arm frames. The arm support is of a columnar structure or a rod-shaped structure, namely, the structure of the arm support is regular, and the connecting structure between the mounting base and the arm support can be simplified through the connection between the mounting base and the arm support.

According to the power supply device provided by the utility model, the mounting seat is in a frame structure, and/or the cable drum is detachably connected with the mounting seat. By setting the mount to a frame structure, the weight of the mount can be reduced. Through the detachable connection of the cable drum and the mounting seat, the cable drum can be detached for maintenance or replacement when the cable drum breaks down.

The utility model also provides an electric excavator, which comprises the bulldozer blade and the power supply device.

According to the power supply device, the first cable, the cable drum and the second cable are connected in sequence, so that electric energy of the power distribution device can be transmitted to the excavator, and power can be supplied to the excavator. The first cable can be wound and unwound through the cable drum, for example, when the excavator is far away from the power distribution device, the first cable is released, and the first cable is wound and unwound when the excavator is close to the power distribution device, so that the problem of ground dragging abrasion of the first cable is solved. By arranging the cable drum on the blade assembly, i.e. the cable drum is connected to the travelling chassis of the excavator by the blade assembly, since the blade assembly is of self-construction, the cable drum is arranged on the blade assembly with less modification to the structure of the excavator itself and therefore less cost than if the cable drum were mounted on the travelling chassis by a dedicated mounting frame.

The electric excavator provided by the utility model comprises the power supply device provided by the utility model, so that all the advantages of the power supply device are simultaneously contained.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an electric excavator provided with a power supply device according to some embodiments of the present utility model;

FIG. 2 is a schematic illustration of a mounting base provided in some embodiments of the present utility model mounted to a blade assembly;

FIG. 3 is a schematic view of a cable drum mounted to a mounting block provided in some embodiments of the utility model;

FIG. 4 is a schematic view illustrating a connection structure between a mounting base and a boom according to some embodiments of the present utility model;

fig. 5 is a schematic structural view of a mount provided in some embodiments of the present utility model.

Reference numerals:

1. A blade assembly; 101. arm support; 102. a shovel plate; 2. a first cable; 3. a cable drum; 4. a second cable; 5. a power supply interface; 6. a charging gun; 7. a bearing seat; 8. a cab; 801. a column; 9. a mounting base; 901. a connecting column; 10. u-shaped bolts; 12. an electrical distribution device.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The power supply device provided in the embodiment of the present utility model is described below with reference to fig. 1 to 5.

Specifically, the power supply device is used to supply power to the excavator provided with the blade assembly 1. The power supply device comprises a first cable 2, a cable drum 3 and a second cable 4.

The first cable 2 is electrically connected to the power distribution device 12. For example, the power distribution device 12 may be a power distribution cabinet. The first cable 2 may be a tensile cable made of a tensile material to improve the tensile properties of the first cable 2 and reduce the problem of the first cable 2 being damaged by pulling during the travel of the excavator.

The cable drum 3 is mounted above the blade assembly 1. The cable drum 3 is provided with a cable entry port and a cable exit port. The cable lead-in port is connected with the first cable 2, and the cable drum 3 is used for winding and unwinding the first cable 2. In this embodiment, the cable drum 3 is provided with a support and a winding reel rotatably connected to the support for winding and unwinding the first cable 2. The support is connected to the blade assembly 1. The cable drum 3 is further provided with an electric slip ring, a rotor of the electric slip ring is connected with the winding drum, a stator of the electric slip ring is connected with the support, the cable lead-in port is arranged on the winding drum, the cable lead-out port is arranged on the support, and the cable lead-in port and the cable lead-out port are connected through the electric slip ring, so that in the process of winding and unwinding the first cable 2 by the cable drum 3, electric energy of the first cable 2 can be always transmitted to the cable lead-out port through the electric slip ring. The cable drum 3 may be driven by an electric or hydraulic motor to pay in and pay out the first cable 2. Optionally, a wire arranging device is further arranged on the cable drum 3, and is used for assisting in winding the first cable 2 on the cable drum 3. At least one of the cable inlet port and the cable outlet port is provided as a plug interface, and the cable can be connected with the plug interface through a plug. Or at least one of the cable inlet port and the cable outlet port is provided with a threaded hole, the cable is wound on a threaded fastener, and the threaded fastener is in threaded fit with the threaded hole to press and fix the cable.

The two ends of the second cable 4 are respectively connected with the cable leading-out port and the electric appliance of the excavator, namely the second cable 4 is used for transmitting the electric energy of the cable leading-out port to the electric appliance. Specifically, the second cable 4 and the first cable 2 are connected to the cable exit port and the cable entry port of the cable drum 3, respectively, and the second cable 4 is electrically connected to the first cable 2 through the cable drum 3. Electrical utilities include, but are not limited to, the electric motor and power battery of the excavator. It should be noted that, because the cable drum 3 is disposed on the travelling chassis of the excavator, the cable drum 3 does not rotate synchronously with the upper vehicle assembly in the rotation process of the upper vehicle assembly of the excavator, so the length of the second cable 4 should meet the requirement of the rotation operation of the excavator, and the specific length of the second cable 4 can be obtained according to the calculation, which is not limited.

The power supply device provided by the embodiment of the utility model can transmit the electric energy of the power distribution device 12 to the excavator through the first cable 2, the cable drum 3 and the second cable 4 which are connected in sequence, so as to supply power for the excavator. The first cable 2 can be further wound and unwound through the cable drum 3, for example, when the excavator is far away from the power distribution device 12, the first cable 2 is released, and when the excavator is close to the power distribution device 12, the first cable 2 is wound, so that the problem of floor-mopping abrasion of the first cable 2 is reduced. By arranging the cable drum 3 on the blade assembly 1, i.e. the cable drum 3 is connected to the travelling chassis of the excavator by the blade assembly 1, since the blade assembly 1 is of self-construction of the excavator, the cable drum 3 is arranged on the blade assembly 1 with less modification to the structure of the excavator itself and therefore less cost than if the cable drum 3 were mounted on the travelling chassis by a dedicated mounting bracket.

Further, the cable drum 3 is mounted on top of the blade assembly 1, thereby minimizing restrictions on the original functions of the blade assembly 1. The original functions of blade assembly 1 include, but are not limited to, leveling or pushing the ground.

In some embodiments of the utility model provided, the excavator is provided with a power supply interface 5 connected with the electric appliance, the second cable 4 is detachably connected with the power supply interface 5, and the cable drum 3 is detachably mounted on the bulldozer blade assembly 1. For example, the power supply interface 5 is provided at the rear side of the cab.

In the present embodiment, the excavator can be allowed to switch between the charging operation mode and the wire-drawing operation mode. Specifically, in the power-on mode, the cable drum 3 is mounted to the blade assembly 1, the second cable 4 is connected to the power supply interface 5, and at this time, the power of the power distribution device 12 is transmitted to the motor of the excavator through the first cable 2, the cable drum 3 and the second cable 4, so as to supply power to the motor of the excavator. In the charging mode of operation, the second cable 4 is detached from the power supply interface 5 and the cable drum 3 is detached from the blade assembly 1, and the charging cord is used to connect the charger and the power supply interface 5, thereby charging the power battery of the excavator.

That is, in the present embodiment, by detachably connecting the second cable 4 with the power supply interface 5 while detachably connecting the cable drum 3 with the blade assembly 1, it is possible to allow the excavator to freely switch between the charging operation mode and the wire-drawing operation mode.

In some embodiments of the present utility model, the power supply device further includes a charging gun 6 adapted to the power supply interface 5, and the second cable 4 is electrically connected to the power supply interface 5 through the charging gun 6. Specifically, the second cable 4 is electrically connected to the charging gun 6, and the charging gun 6 is detachably plugged into the power supply interface 5.

In this embodiment, an operator can directly hold the charging gun 6, so that the charging gun 6 is plugged into or separated from the power supply interface 5, and the operation is faster and the use is more convenient.

In some embodiments provided by the present utility model, the power supply device further comprises a carrying seat 7. The carrying seat 7 is connected with a cab 8 of the excavator, the second cable 4 is connected with the carrying seat 7, and the connection position of the second cable 4 and the carrying seat 7 is arranged between two ends of the second cable 4.

As analyzed above, during the rotation operation of the excavator, the cable drum 3 does not rotate along with the rotation of the excavator, so that the second cable 4 is pulled during the rotation of the excavator, and when the second cable 4 is pulled, the connection structure between the second cable 4 and the power supply interface 5, that is, the charging gun 6 and the power supply interface 5 are easily damaged. In this embodiment, the bearing seat 7 is connected to the position between the two ends of the second cable 4, and in the rotation process of the excavator, the stress point of the second cable 4 is transferred to the connection position between the bearing seat 7 and the second cable 4 instead of the connection position between the charging gun 6 with weak structure and the charging interface, so that the stress between the charging gun 6 and the power supply interface 5 is reduced, and the effect of protecting the charging gun 6 and the power supply interface 5 is achieved.

As shown with reference to fig. 1, the carrying seat 7 optionally comprises a carrying bar around which the second cable 4 is wound. So set up, the structure of carrying seat 7 is simple to through the frictional force between second cable 4 and the carrier bar can balance the pulling force that second cable 4 received.

In some embodiments provided by the present utility model, the second cable 4 is detachably connected to the carrying seat 7. So arranged, in the pure electric mode, the second cable 4 can be detached from the carrying seat 7.

Referring to fig. 1, optionally, the second cable 4 is detachably connected to the carrier bar by a fastener.

In particular, the fastener comprises a tie, a pipe clamp or a clamp. So set up, the simple structure of fastener, low cost to the operation of being convenient for can conveniently be fixed in the carrier bar with second cable 4 or pull down second cable 4 from the carrier bar.

Further, after the second cable 4 is wound on the bearing rod, the second cable 4 is fixed by the fastener, so that the problem that the second cable 4 is loosened from the bearing rod is solved, and the connection strength of the second cable 4 and the bearing rod is improved.

In some embodiments provided by the present utility model, the carrying seat 7 is detachably connected with the cab 8. So arranged, in the purely electric operating mode, the carrying seat 7 can be detached from the cab 8, so as to simplify the structure of the excavator and optimize the overall weight. Alternatively, the load carrier 7 may be screwed with the cab 8, or with the cab 8 by a threaded fastener, or with the cab 8 by a pipe clamp.

Alternatively, the carrying seat 7 is connected with the pillar 801 of the cab 8, specifically, the carrying seat 7 is provided on the pillar 801 near the rear side of the cab 8, and the carrying seat 7 extends toward the rear of the cab 8. The structure of the upright 801 is simple, and the rear of the upright 801 is free from interference of other components, namely, the rear space of the upright 801 is wide, the bearing seat 7 is more convenient to set, and the bearing seat 7 is not easy to interfere with other components.

In some embodiments of the present utility model, the power supply device further comprises a mounting base 9, and the cable drum 3 is connected to the blade assembly 1 through the mounting base 9. Because the installation surface of the bulldozer assembly 1 and the installation surface of the cable drum 3 are smaller, the cable drum 3 is directly connected with the bulldozer assembly 1, the butt joint difficulty is higher, and the installation position of the cable drum 3 is limited. In the present embodiment, the cable drum 3 is mounted on the blade assembly 1 by the mounting base 9, and the mounting base 9 is respectively abutted with the cable drum 3 and the blade assembly 1, so that the problem that the mounting position of the cable drum 3 is limited by the mounting surface of the blade assembly 1 can be reduced, and the cable drum 3 can have a more suitable mounting position on the blade assembly 1.

In some embodiments provided by the present utility model, the mounting block 9 is removably attached to the blade assembly 1. So configured, in the electric-only operating mode, the mounting base 9 can be detached from the blade assembly 1, thereby simplifying the structure of the blade assembly 1, restoring all the original functions of the blade assembly 1, and reducing the weight of the blade assembly 1.

In some embodiments of the present utility model, referring to fig. 1 and 2 again, a dozer blade assembly 1 includes a pair of arms 101 and a blade 102, the pair of arms 101 are respectively connected to the blade 102, and a mounting base 9 is respectively connected to the pair of arms 101. Because the arm support 101 is generally in a columnar structure or a rod-shaped structure, that is, the structure of the arm support 101 is more regular, the connection structure between the mounting seat 9 and the arm support 101 can be simplified by connecting the mounting seat 9 with the arm support 101.

Referring to fig. 4 and 5, the power supply device may optionally further include a U-bolt 10 and a fixing nut. The U-shaped bolt 10 is sleeved on the arm support 101 and is used for bearing the arm support 101, and two ends of the U-shaped bolt 10 penetrate through the mounting seat 9 and are in threaded connection with the fixing nut. So set up, need not to punch etc. to the cantilever crane 101 and can install mount pad 9 on the cantilever crane 101, it is more convenient to use, convenient dismantlement.

Further, the mounting base 9 is provided with a connection post 901, and the u-shaped bolt 10 is connected with the connection post 901 through a fixing nut. Specifically, at least two connecting posts 901 are respectively arranged on two sides of the mounting seat 9, and the connecting posts 901 on two sides of the mounting seat 9 are respectively connected with the corresponding arm support 101 through corresponding U-shaped bolts 10, so that the connection strength of the mounting seat 9 and the arm support 101 can be improved.

Of course, the mounting base 9 is not limited to being connected to the arm support 101 by the U-shaped bolt 10, for example, the mounting base 9 may be connected to the arm support 101 by a bolt, that is, the bolt passes through the arm support 101 and the mounting base 9 and connects them.

In some embodiments of the present utility model, the mounting base 9 is configured as a frame structure, so that the weight of the mounting base 9 can be reduced. Alternatively, the mounting seat 9 may be formed from a profile by welding.

In some embodiments provided by the present utility model, the cable drum 3 is detachably connected to the mounting seat 9. So arranged, the cable drum 3 can be replaced when the cable drum 3 fails. Alternatively, the cable drum 3 may be detachably connected to the mounting block 9 by bolts or ties.

The embodiment of the utility model also provides an electric excavator.

Specifically, the electric excavator includes a blade and the power supply device as described above.

It should be noted that the electric excavator includes the power supply device, and all the advantages of the power supply device are also included, which is not described herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A power supply device for supplying power to an excavator provided with a blade assembly (1), comprising:

A first cable (2), the first cable (2) being for electrical connection with a power distribution device (12);

The cable drum (3), the cable drum (3) is installed in the bulldozer assembly (1), the cable drum (3) is provided with a cable inlet port and a cable outlet port, the cable inlet port is connected with the first cable (2), and the cable drum (3) is used for winding and unwinding the first cable (2);

and two ends of the second cable (4) are respectively connected with the cable leading-out port and the electric appliance of the excavator.

2. The power supply device according to claim 1, characterized in that the excavator is provided with a power supply interface (5) connected with the electric appliance, the second cable (4) is detachably connected with the power supply interface (5), and the cable drum (3) is detachably mounted to the blade assembly (1).

3. The power supply device according to claim 2, further comprising a charging gun (6) adapted to the power supply interface (5), the second cable (4) being connected to the power supply interface (5) through the charging gun (6).

4. The power supply device according to claim 2, further comprising a carrying seat (7), the carrying seat (7) being connected with a cab (8) of the excavator, the second cable (4) being connected with the carrying seat (7), and a connection position of the second cable (4) with the carrying seat (7) being provided between both ends of the second cable (4).

5. The power supply device according to claim 4, characterized in that the carrier (7) is detachably connected to the cab (8) and/or that the second cable (4) is detachably connected to the carrier (7).

6. The power supply device according to any one of claims 1-5, further comprising a mounting (9), wherein the cable drum (3) is connected to the blade assembly (1) by means of the mounting (9).

7. The power supply device according to claim 6, characterized in that the mounting seat (9) is detachably connected to the blade assembly (1).

8. The power supply device according to claim 6, wherein the blade assembly (1) comprises a pair of arms (101) and a blade (102), a pair of the arms (101) are connected to the blade (102), and the mount (9) is connected to a pair of the arms (101).

9. The power supply device according to claim 6, characterized in that the mounting seat (9) is provided as a frame structure and/or that the cable drum (3) is detachably connected with the mounting seat (9).

10. An electric excavator comprising a blade and a power supply device as claimed in any one of claims 1 to 9.