Complete machine arrangement structure of electric excavator

Abstract

The utility model discloses a complete machine arrangement structure of an electric excavator, which belongs to the technical field of excavators and comprises a complete machine platform, a rotary joint is arranged in the middle of the complete machine platform, an evaporator is arranged on one side of the complete machine platform, an electric compressor and a water heater are arranged behind the evaporator, and the electric compressor is connected with a complete machine radiator. The complete machine radiator is arranged behind the electric compressor; the rectifying unit is arranged on the other side of the whole machine platform and connected with the motor controller through a cable, the motor controller is connected with the motor, and the rotary connector is connected with the rectifying unit through a high-voltage wire harness.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavators, and in particular relates to a complete machine arrangement structure of an electric excavator. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] At present, most excavators are powered by a fuel tank and an engine, which produces exhaust gas and noise, and has a great impact on the environment. Electric excavators can solve this problem, but existing electric excavators are mostly powered by batteries, which take up too much space on the excavator platform, and the layout of various components and equipment on the platform is unreasonable, resulting in a waste of space, lengthy cables, and easy damage to the cables. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an overall layout structure of an electric excavator, which has a compact layout and reasonable space utilization.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] In the first aspect, the utility model provides an electric excavator whole machine layout structure, including a whole machine platform, a swivel joint is arranged in the middle of the whole machine platform, an evaporator is installed on one side of the whole machine platform, an electric compressor and a water heater are arranged behind the evaporator, the electric compressor is connected to the whole machine radiator, and the whole machine radiator is placed behind the electric compressor; a rectifier unit is installed on the other side of the whole machine platform, the rectifier unit is connected to the motor controller through cables, the motor controller is connected to the motor, and the swivel joint is connected to the rectifier unit through a high-voltage wire harness.

[0007] As a further technical solution, the whole machine platform is provided with a left front frame corresponding to the positions of the electric compressor and the water heater, and a lower sealing plate is provided at the lower side of the left front frame.

[0008] As a further technical solution, the electric compressor and the water heater are fixed on the top of the lower sealing plate, and a shuttle valve group and a solenoid valve group are arranged below the lower sealing plate.

[0009] As a further technical solution, the whole machine platform includes a platform bottom plate, two platform main beams are fixedly arranged on the platform bottom plate, there is a gap between the two platform main beams, and a swivel joint is placed between the two platform main beams.

[0010] As a further technical solution, the platform bottom plate is provided with a mounting hole, the swivel joint is fixed to the mounting hole, and the lower part of the swivel joint is placed below the platform bottom plate.

[0011] As a further technical solution, a base frame is arranged under the platform bottom plate, a swivel joint mounting plate is fixedly arranged on the base frame, the top of the swivel joint mounting plate is fixedly connected to the platform bottom plate, the swivel joint is connected to the swivel joint mounting plate, and the bottom of the swivel joint is connected to the collector ring.

[0012] As a further technical solution, the whole machine platform corresponds to a toolbox arranged in front of the rectifier unit, a hydraulic oil tank arranged behind the rectifier unit, the hydraulic oil tank is connected to the whole machine radiator, the motor controller is arranged behind the hydraulic oil tank, the motor controller is connected to the external DCDC converter, and the external DCDC converter is placed behind the motor controller.

[0013] As a further technical solution, a boarding ladder is provided on the whole machine platform, and the boarding ladder includes multiple steps respectively arranged on the top of the tool box, the rectifier unit, and the hydraulic oil tank. Handrails are arranged on the sides of the steps. The heights of the multiple steps increase successively, and a footrest is arranged at the end of the step corresponding to the tool box.

[0014] As a further technical solution, an upper cover plate is provided corresponding to the step of the rectifier unit, and the side of the upper cover plate is fixedly connected to the inner baffle plate, and the upper cover plate and the inner baffle plate cover the rectifier unit therein.

[0015] As a further technical solution, the whole machine platform corresponds to the reserved cab installation position in front of the evaporator, and a battery is placed on the side of the whole machine radiator, and the battery provides power for the electric compressor.

[0016] The beneficial effects of the above utility model are as follows:

[0017] The electric excavator of the utility model has an overall layout structure in which power is provided by an electric motor and a fuel tank is eliminated, which is more environmentally friendly. In addition, no battery is required on the overall platform to power the motor, which saves space. The evaporator, electric compressor, overall radiator, etc. are placed on one side of the overall platform, and the rectifier unit, motor controller, etc. are placed on the other side of the overall platform, so that the layout of the entire overall platform is more compact and the space utilization is more reasonable.

[0018] The overall layout structure of the electric excavator of the utility model installs the collector ring below the swivel joint, which can ensure that the platform installation is relatively reasonable and save the upper space; and the collector ring is hidden inside the frame, which also utilizes the internal space of the frame.

[0019] The overall layout structure of the electric excavator of the utility model arranges and runs the high-voltage wiring harness, cables, etc. in the shortest path, thereby reducing damage to the cables, etc.; the high-voltage wiring harness led out of the swivel joint can pass through the platform main beam to be connected to the rectifier unit, and the cable of the rectifier unit can be connected to the motor controller along the outer side of the platform main beam, ensuring that the high-voltage wiring harness is as short as possible while being at a certain distance from the low-voltage wiring harness, thereby avoiding interference in signal and power transmission.

[0020] The electric excavator of the utility model has an overall layout structure in which electrical components are placed on the top layer; the rectifier unit can be pulled out for maintenance by disassembling the upper cover plate, and the motor controller and the external DCDC converter can be directly maintained by opening the upper machine cover; the tool box, the rectifier unit, and the hydraulic oil tank are positioned in a stepped manner to meet the vehicle height standard, and the maintenance worker can more easily maintain the rectifier unit by standing at the tool box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 It is a schematic diagram of the overall arrangement structure of an electric excavator according to one or more embodiments of the utility model;

[0023] Figure 2 is a top view of the overall arrangement structure of an electric excavator according to one or more embodiments of the utility model;

[0024] Figure 3 It is a side view of the overall arrangement structure of an electric excavator according to one or more embodiments of the utility model;

[0025] Figure 4 is a schematic diagram of a vehicle boarding ladder according to one or more embodiments of the present utility model;

[0026] In the figure: 1. whole machine platform, 2. cab installation position, 3. tool box, 4. rectifier unit, 5. right front frame, 6. platform side beam, 7. platform main beam, 8. evaporator, 9. electric compressor, 10. water heater, 11. left front frame, 12. lower cover plate, 13. whole machine radiator, 14. battery, 15. hydraulic oil tank, 16. motor controller, 17. external DCDC converter, 18. motor, 19. swivel joint, 20. high voltage wiring harness, 21. chassis, 22. swivel joint mounting plate, 23. collector ring, 24. boarding ladder, 25. step, 26. handrail, 27. footrest, 28. upper cover plate, 29. inner baffle.

[0027] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0030] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] Terminology explanation section: If the terms "install", "connect", "connect", "fixed" and so on appear in the present invention, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] In a typical implementation of the present invention, Figure 1 As shown, an electric excavator overall layout structure is proposed, which includes an overall platform 1. The overall platform 1 is a frame structure that provides installation space for other equipment.

[0033] The left front end of the whole machine platform 1 reserves a cab installation position 2 to provide installation space for the cab; an evaporator 8 is arranged behind the cab installation position 2, the evaporator is fixed in the cab, the evaporator is connected to the condenser, and the condenser is fixed on the radiator. The evaporator, condenser, and radiator are all existing equipment in electric excavators; an electric compressor 9 and a water heater 10 are arranged behind the evaporator 8, and the whole machine platform 1 is provided with a left front frame 11 corresponding to the position of the electric compressor and the water heater. The left front frame is a frame structure, and a lower sealing plate 12 is arranged on the lower side of the left front frame 11. The electric compressor and the water heater are fixed on the top of the lower sealing plate. The shuttle valve group and the solenoid valve group are placed under the lower sealing plate and fixed on the whole machine platform, which can increase the space utilization rate of this space. The water heater, the shuttle valve group, and the solenoid valve group are existing components in the electric excavator. The utility model does not improve their structure, but improves their installation position. The structure of the shuttle valve group, the solenoid valve group, and the water heater will not be described in detail.

[0034] The electric compressor 9 is connected to the whole machine radiator 13, and the whole machine radiator is placed behind the electric compressor. The whole machine radiator is located at the rear end of the left side of the whole machine platform, and the components related to cooling and heat dissipation are concentrated behind the cab. A battery 14 is placed on the side of the whole machine radiator, and the battery provides power for the electric compressor.

[0035] A toolbox 3 is fixedly arranged at the front right side of the whole machine platform 1, a rectifier unit 4 is arranged behind the toolbox 3, a right front frame 5 is arranged at the position of the whole machine platform 1 corresponding to the rectifier unit 4, and the rectifier unit is fixed at the right front frame.

[0036] A hydraulic oil tank 15 is arranged behind the rectifier unit 4, and the hydraulic oil tank is connected to the radiator of the whole machine. A motor controller 16 is arranged behind the hydraulic oil tank, and the motor controller 16 is connected to an external DCDC converter 17. The external DCDC converter 17 is placed behind the motor controller 16, and the motor controller 16 is connected to the motor 18. The motor controller 16 is connected to the rectifier unit 4 through a cable.

[0037] The electric excavator is plug-in type and does not require batteries to provide power. An external power supply is required to start the whole machine working. It uses electricity as a power source, does not require fuel, does not produce exhaust gas and noise, and has little impact on the environment. At the same time, it has low operating costs, long service life, and relatively low maintenance costs, and can meet 24-hour operations.

[0038] A swivel joint 19 is provided in the middle of the whole machine platform 1, and the swivel joint 19 is connected to the rectifier unit 4 through a high-voltage wire harness 20. The high-voltage wire harness led out of the swivel joint can be connected to the rectifier unit through the platform main beam, and the cable of the rectifier unit can be connected to the motor controller along the outer side of the platform main beam.

[0039] The whole machine platform 1 includes a platform bottom plate, and each device is installed on the platform bottom plate. Platform side beams 6 are arranged on both sides of the platform bottom plate. Two platform main beams 7 are fixedly arranged on the platform bottom plate. The two platform main beams 7 are spaced a certain distance apart, and the two platform main beams 7 are connected by plates, etc. The swivel joint, motor, cables, etc. are placed between the two platform main beams 7, and other devices are placed on both sides of the platform main beams accordingly.

[0040] The platform bottom plate is provided with a mounting hole for the rotary joint 19 to be installed therein, the lower part of the rotary joint 19 is placed under the platform bottom plate, a base frame 21 is arranged under the platform bottom plate, a rotary joint mounting plate 22 is fixedly arranged on the base frame 21, the top of the rotary joint mounting plate is fixedly connected to the platform bottom plate, and the rotary joint is connected to the rotary joint mounting plate; the bottom of the rotary joint 19 is connected to the collector ring 23, and the function of the collector ring is to transmit high-voltage current. Conventional rotary joints are installed from top to bottom, but in this embodiment, the collector ring is first assembled with the rotary joint. Because the body is larger after the collector ring and the rotary joint are connected, the rotary joint is installed on the rotary joint mounting plate of the base frame from bottom to top, and the mounting surface is on the lower surface of the rotary joint mounting plate, which is convenient for installation operation.

[0041] The high-voltage wire harness 20 is connected to the top of the rotary joint 19, and is led out from the rotary joint and connected to the rectifier unit 4 to provide current for the entire vehicle; the high-voltage wire is led out from the bottom of the collector ring 23 to connect to the external power supply.

[0042] In a further solution, a step 24 for getting on the vehicle is provided at the tool box, the rectifier unit and the hydraulic oil tank. The step 24 for getting on the vehicle includes a plurality of steps 25 respectively provided on the top of the tool box, the rectifier unit and the hydraulic oil tank. Handrails 26 are provided on the sides of the steps 25. The heights of the plurality of steps 25 increase sequentially from the tool box, the rectifier unit to the hydraulic oil tank. A footrest 27 is provided at the end of the step 25 corresponding to the tool box to facilitate people to climb the steps.

[0043] An upper cover plate 28 is provided at the step corresponding to the rectifier unit, and the side of the upper cover plate 28 is fixedly connected to the inner baffle plate 29. The upper cover plate and the inner baffle plate cover the rectifier unit therein. When the rectifier unit needs to be repaired, after removing the upper cover plate and the inner baffle plate, the rectifier unit is first moved to the right side of the vehicle and then lifted up. There is no need to remove the handrail, and the operation is simple and convenient.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric excavator overall layout structure, characterized in that: It comprises a whole machine platform, a rotary joint is arranged in the middle of the whole machine platform, an evaporator is arranged on one side of the whole machine platform, an electric compressor and a water heater are arranged behind the evaporator, the electric compressor is connected to the whole machine radiator, and the whole machine radiator is arranged behind the electric compressor; A rectifier unit is installed on the other side of the whole machine platform. The rectifier unit is connected to the motor controller through a cable, the motor controller is connected to the motor, and the rotary joint is connected to the rectifier unit through a high-voltage wire harness.

2. The electric excavator overall arrangement structure according to claim 1, characterized in that: The whole machine platform is provided with a left front frame corresponding to the positions of the electric compressor and the water heater, and a lower sealing plate is provided at the lower side of the left front frame.

3. The electric excavator overall arrangement structure as claimed in claim 2, characterized in that: The electric compressor and the water heater are fixed on the top of the lower sealing plate, and a shuttle valve group and a solenoid valve group are arranged below the lower sealing plate.

4. The electric excavator overall arrangement structure according to claim 1, characterized in that: The whole machine platform comprises a platform bottom plate, two platform main beams are fixedly arranged on the platform bottom plate, a gap is provided between the two platform main beams, and a swivel joint is arranged between the two platform main beams.

5. The electric excavator overall arrangement structure as claimed in claim 4, characterized in that: The platform bottom plate is provided with a mounting hole, the swivel joint is fixed to the mounting hole, and the lower part of the swivel joint is placed below the platform bottom plate.

6. The electric excavator overall arrangement structure according to claim 5, characterized in that: A base frame is arranged below the platform bottom plate, a swivel joint mounting plate is fixedly arranged on the base frame, the top of the swivel joint mounting plate is fixedly connected to the platform bottom plate, the swivel joint is connected to the swivel joint mounting plate, and the bottom of the swivel joint is connected to the collector ring.

7. The electric excavator overall arrangement structure according to claim 1, characterized in that: The whole machine platform corresponds to a tool box arranged in front of the rectifier unit, a hydraulic oil tank arranged behind the rectifier unit, the hydraulic oil tank is connected to the whole machine radiator, a motor controller is arranged behind the hydraulic oil tank, the motor controller is connected to an external DCDC converter, and the external DCDC converter is placed behind the motor controller.

8. The electric excavator overall arrangement structure according to claim 7, characterized in that: The whole machine platform is provided with a boarding ladder, which includes a plurality of steps respectively arranged on the top of the tool box, the rectifier unit and the hydraulic oil tank, handrails are arranged on the sides of the steps, the heights of the plurality of steps increase sequentially, and a footrest is arranged at the end of the step corresponding to the tool box.

9. The electric excavator overall arrangement structure according to claim 8, characterized in that: An upper cover plate is arranged at the step corresponding to the rectifier unit, and the side of the upper cover plate is fixedly connected to the inner baffle plate. The upper cover plate and the inner baffle plate cover the rectifier unit therein.

10. The electric excavator overall arrangement structure according to claim 1, characterized in that: The whole machine platform corresponds to the reserved cab installation position in front of the evaporator, and a battery is placed on the side of the whole machine radiator, and the battery provides power for the electric compressor.

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