Upper vehicle and miniature electric excavator

Abstract

The utility model relates to the field of engineering machinery, and discloses an upper vehicle and a miniature electric excavator. A rotary platform of the upper vehicle is divided into a high-pressure area which is located behind the rotary center and is provided with a device for providing electric energy by taking the rotary center as the center of rotation; the hydraulic source area is located on the right rear portion of the rotation center and provided with a device for providing pressure energy; and a front region which is located in front of the rotation center and in which the control valve group and the rotation motor are disposed. The upper vehicle is applied to the miniature electric excavator, the rotary platform is divided into the high-pressure area, the hydraulic source area and the front area, parts of the upper vehicle are centrally arranged in different areas in a limited space, pipeline connection and pipeline intersection are reduced, and the problem of arrangement of the parts of the upper vehicle of the miniature electric excavator is solved; the effects of reasonable arrangement, simple assembly and convenient maintenance are achieved.

Description

Technical Field

[0001] The present application belongs to the field of engineering machinery, and specifically relates to a vehicle and a mini electric excavator. Background Art

[0002] A mini excavator is an excavator with a total weight of less than 5 tons. It is small in size, has good working conditions and is suitable for working in small spaces. However, due to the small size of the machine, it is difficult to arrange the parts on the vehicle, heat dissipation is difficult, and maintenance is inconvenient, which has become a common problem in the mini excavator industry. With the trend of electrification, some mini excavators use high-voltage power battery packs to drive high-power motors to replace their original engines, but due to the large size of the power battery pack, the above-mentioned parts layout problem has not been solved.

[0003] Patent CN219887005U - An electric micro-excavator layout structure, by arranging the radiator, water pump, auxiliary water bottle, micro-excavator motor and main pump around the battery pack installed in the middle of the rotary platform, the structure of the rotary platform body is more compact and reasonable. However, due to the mixed cross arrangement of its high-voltage battery pack and various hydraulic components, the pipelines are complicated, which leads to difficult assembly and inconvenient maintenance. Utility Model Content

[0004] The purpose of the present application is to provide a vehicle and a mini electric excavator, which are used to solve the problem of the arrangement of the vehicle parts of the mini electric excavator, and achieve the effects of reasonable arrangement, simple assembly and convenient maintenance.

[0005] In order to achieve the above-mentioned object, the present application provides a vehicle on one hand, including a rotating platform, wherein the rotating platform is divided into:

[0006] a high voltage area, located behind the rotation center, equipped with a device for providing electrical energy;

[0007] A hydraulic source area, located to the right rear of the rotation center, is provided with a device for providing pressure energy;

[0008] The front area, located in front of the slewing center, is equipped with a control valve group and a slewing motor.

[0009] In some embodiments, the high-voltage area is configured with a power battery pack, a power battery controller and a main controller; the power battery pack is fastened on the rotating platform, and the power battery controller and the main controller are respectively stacked on top of the power battery pack.

[0010] In some embodiments, the hydraulic source area is configured with a hydraulic oil tank, an oil pump, a motor and a radiator; the hydraulic oil tank, the oil pump and the motor are sequentially fastened on the rotary platform from front to back, and the radiator is stacked on top of the motor;

[0011] The hydraulic oil tank, the oil pump, the control valve group and the rotary motor are interconnected by pipelines to form a hydraulic transmission circuit.

[0012] In some embodiments, the radiator is stacked on top of the motor using a bracket, and the radiator is provided with a fan, and the active area of ​​the fan is higher than the power battery pack.

[0013] In some embodiments, the front area is also configured with a battery; the control valve group, the rotary motor and the battery are fastened on the rotary platform in sequence from left to right, and the rotary motor is located next to the rotary center.

[0014] In some embodiments, the rotary platform is further divided into a tail area located above and behind the high-voltage area; the tail area is equipped with a high-voltage charging port, a water tank, a water pump and a distribution box;

[0015] The water tank, the water pump, the power battery pack, the power battery controller and the radiator are interconnected by pipelines to form a water-cooling heat dissipation circuit.

[0016] In some embodiments, the tail region is further configured with a box body disposed on the high-voltage charging port and the water tank, and the box body is provided with an inspection door that can be opened and closed.

[0017] In some embodiments, the upper vehicle further includes a main frame and a cab; the main frame is erected above the high-pressure area, the bottom of the main frame is fastened to the revolving platform, and the cab is arranged on the top of the main frame.

[0018] In some embodiments, the upper vehicle further includes a covering member disposed on the surface of the rotating platform or the surface of the main frame, and the covering member includes one or more of a left cover, a right front cover, a right rear cover, a tail cover, a partition, and a floor.

[0019] A second aspect of the present application provides a micro electric excavator, comprising a lower vehicle and the upper vehicle mentioned above; the upper vehicle can rotate relative to the lower vehicle.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The upper vehicle of the present application is applied to a micro electric excavator. By dividing the rotating platform into a high-pressure area, a hydraulic source area and a front area, the components of the upper vehicle are concentratedly arranged in different areas within a limited space, thereby reducing pipeline connections and pipeline crossings, thereby solving the problem of layout of the upper vehicle components of the micro electric excavator and achieving the effect of reasonable layout, simple assembly and convenient maintenance.

[0022] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0024] Figure 1 This is a plan view of the rotary platform of a specific implementation method of the present application.

[0025] Figure 2 This is a structural diagram of a rotary platform according to a specific implementation method of the present application.

[0026] Figure 3 It is a three-dimensional layout diagram of the high-voltage area of ​​a specific embodiment of the present application.

[0027] Figure 4 It is a three-dimensional layout diagram of the hydraulic source area and the front area of ​​a specific embodiment of the present application.

[0028] Figure 5 It is a schematic diagram of the effective area of ​​the fan according to a specific embodiment of the present application.

[0029] Figure 6 This is a left-side stereoscopic layout diagram of the tail area (with some parts removed) of a specific implementation method of the present application.

[0030] Figure 7 It is a right side stereoscopic layout diagram of the tail area of ​​a specific embodiment of the present application.

[0031] Figure 8 This is a schematic diagram of a partition and a floor according to a specific embodiment of the present application.

[0032] Fig. 9 This is a schematic diagram of a cover according to a specific embodiment of the present application.

[0033] Explanation of the reference numerals: slewing platform 1, reinforcement rib 11, high-voltage area 2, power battery pack 21, power battery controller 22, main controller 23, hydraulic source area 3, hydraulic oil tank 31, oil pump 32, motor 33, radiator 34, action area 341, front area 4, control valve group 41, slewing motor 42, battery 43, high-voltage charging port 51, water tank 52, water pump 53, distribution box 54, box body 55, inspection door 551, main frame 6, first bracket 61, second bracket 62, cab 7, cab canopy 71, seat 72, cover 8, left cover 81, right front cover 82, right rear cover 83, tail cover 84, partition 85, floor 86. DETAILED DESCRIPTION

[0034] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0035] like Figures 1 to 4 As shown, a vehicle, the rotary platform 1 of which is divided into:

[0036] High voltage area 2, located behind the slewing center, is equipped with a device to provide electrical energy;

[0037] The hydraulic source area 3, located to the right rear of the center of rotation, is equipped with a device for providing pressure energy;

[0038] The front area 4 , located in front of the rotation center, is equipped with a control valve group 41 and a rotation motor 42 .

[0039] In this application, the straight line passing through the slewing center is used as a reference, and the direction facing the cab 7 of the vehicle or the side where the boom section is installed is the front. The slewing platform 1 is used as a frame for the vehicle to install various parts. In the top view, the slewing platform 1 is divided into a high-voltage area 2 and a hydraulic source area 3 according to electricity and hydraulics to achieve oil-electricity separation. The high-voltage area 2 will centrally arrange the devices that provide electrical energy, reduce the number of cables and interfaces, and make the power system more reliable and safe. At the same time, the devices that provide electrical energy are heavy and evenly distributed, such as the power battery pack 21, which is arranged behind the slewing center and can replace the traditional counterweight components, and make the slewing platform 1 more balanced and stable. The hydraulic source area 3 will centrally arrange the devices that provide pressure energy, reduce the number of pipes and interfaces, and make the hydraulic system assembly relationship simple and convenient for maintenance. The front area 4 will centrally arrange the control valve group 41 and the slewing motor 42, which is conducive to the troubleshooting of the hydraulic system.

[0040] Specifically, the high voltage area 2 is equipped with a power battery pack 21, a power battery controller 22 and a main controller 23; the power battery pack 21 is fastened to the rotary platform 1, and the power battery controller 22 and the main controller 23 are respectively stacked on the power battery pack 21. The power battery pack 21 stores electric energy in the form of high voltage to drive the movements of various components of the mini electric excavator; the power battery controller 22 is used to control the release and charging of electric energy of the power battery pack 21; and the main controller 23 is used to control the movements of various components of the electric excavator.

[0041] In some embodiments, the power battery pack 21 is arranged behind the center of rotation to the left to reduce load eccentricity. The power battery pack 21 is fastened to the bottom plate of the rotating platform 1 with bolts. A plurality of slender reinforcing ribs 11 are welded on the bottom plate to enhance the strength of the bottom plate and provide multi-point and multi-faceted support for the power battery pack 21 to increase the stability of the power battery pack 21. The power battery controller 22 is a four-in-one controller to reduce the number of electrical components and reduce the difficulty of layout in the high-voltage area 2.

[0042] Specifically, the hydraulic source area 3 is configured with a hydraulic oil tank 31, an oil pump 32, a motor 33 and a radiator 34; the hydraulic oil tank 31, the oil pump 32, and the motor 33 are fastened on the rotating platform 1 in sequence from front to back, and the radiator 34 is stacked above the motor 33; the hydraulic oil tank 31, the oil pump 32, the radiator 34, the control valve group 41 and the rotary motor 42 are interconnected by pipelines to form a hydraulic transmission circuit.

[0043] In the present application, the power battery pack 21 supplies power to the motor 33 through the power battery controller 22, and the motor 33 drives the oil pump 32 to draw hydraulic oil from the hydraulic oil tank 31. The hydraulic oil passes through the control valve group 41, and after adjusting the direction, flow, pressure, etc., it drives the rotary motor 42 to rotate and other actuators to move, so as to realize the movement of various components of the electric excavator. The radiator 34 is used to cool the hydraulic oil.

[0044] In some embodiments, the hydraulic oil tank 31, the oil pump 32 and the motor 33 are arranged side by side on the right side of the power battery pack 21, which is conducive to balancing the load on the left and right sides of the rotary platform 1. The oil pump 32 can be connected to the output shaft of the motor 33 through a coupling. The motor 33 is fastened to the bottom plate of the rotary platform 1 with bolts, and the support point is at a low position, which is conducive to keeping the motor 33 stable when working.

[0045] like Figure 5As shown, further, the radiator 34 is stacked on the motor 33 using a bracket, and the radiator 34 is provided with a fan, and the action area 341 of the fan is higher than the power battery pack 21. The radiator 34 is arranged to be elevated using a bracket, and driven by the fan, the air can freely pass through the left and right sides of the vehicle, so that the radiator 34 has better heat dissipation performance; at the same time, the limited space in the hydraulic source area 3 is fully utilized from a three-dimensional perspective.

[0046] In some embodiments, the radiator 34 is mounted on the top of the bracket, and the bottom of the bracket is fastened to the bottom plate of the rotary platform 1 with bolts. By removing the bracket, the radiator 34 can be removed as a whole, which is convenient for maintenance of the motor 33 and the oil pump 32 below.

[0047] Optionally (not shown in the figure), the power battery pack in the high-voltage area or the motor in the hydraulic source area is fastened to the bottom plate of the rotating platform through a shock absorber to reduce the vibration caused by the operation of the micro electric excavator.

[0048] Specifically, the front area 4 is also equipped with a battery 43; the control valve group 41, the rotary motor 42 and the battery 43 are fastened on the rotary platform 1 in sequence from left to right, and the rotary motor 42 is located next to the rotary center.

[0049] In some embodiments, the battery 43 stores electrical energy in a low voltage form (eg, 12V) for powering low voltage working components on board the vehicle.

[0050] like Figure 6 , Figure 7 As shown, specifically, the rotary platform 1 is also divided into a tail area located above and behind the high-voltage area 2; the tail area is equipped with a high-voltage charging port 51, a water tank 52, a water pump 53 and a distribution box 54; the water tank 52, the water pump 53, the power battery pack 21, the power battery controller 22 and the radiator 34 are interconnected by pipes to form a water-cooled heat dissipation circuit. The high-voltage charging port 51 is used to charge the power battery pack 21, and may include a DC fast charging port and an AC slow charging port. Coolant is stored in the water tank 52, and the coolant is pressurized by the water pump 53 and circulated in the water-cooled heat dissipation circuit. The radiator 34 of the present application cools both the hydraulic oil and the coolant.

[0051] Furthermore, the tail region is also provided with a box body 55 disposed on the high-voltage charging port 51 and the water tank 52 , and the box body 55 is provided with an openable and closable inspection door 551 . The box body 55 is used to protect the high-voltage charging port 51 and the water tank 52 .

[0052] Specifically, the upper vehicle further includes a main frame 6 and a cab 7 ; the main frame 6 is erected above the high-pressure area 2 , with its bottom fastened to the rotary platform 1 , and the cab 7 is disposed on its top. The main frame 6 is used to support the cab 7 .

[0053] In some embodiments, the high-voltage charging port 51 and the water tank 52 are arranged in parallel behind the seat 72 of the cab 7, fastened to the rear platform of the main frame 6, and covered by a box 55. The access door 551 on the box 55 is opened to perform charging and adding coolant. The water pump 53 and the distribution box 54 are fastened to the main frame 6, and are located on one side of the fan's action area 341.

[0054] In some embodiments, the bottom of the main frame 6 is fastened to the bottom plate of the rotary platform 1 with bolts. A first bracket 61 and a second bracket 62 are welded on the main frame 6, wherein the first bracket 61 is used to suspend and install the power battery controller 22 and the main controller 23, and the second bracket 62 is used to install the water pump 53 and the distribution box 54, which is stable and reliable and saves space. The cab 7 includes an open cab 71 and a seat 72.

[0055] like Figure 8 , Fig. 9 As shown, specifically, the upper vehicle further includes a cover 8 disposed on the surface of the rotary platform 1 or the surface of the main frame 6, and the cover 8 includes one or more of a left cover 81, a right front cover 82, a right rear cover 83, a tail cover 84, a partition 85, and a floor 86. The cover 8 can protect the components in the high-pressure area 2, the hydraulic source area 3, the front area 4, and the tail area.

[0056] In some embodiments, the partition 85 is located in front of the main frame 6, covering the front of the high-voltage area 2. The floor 86 is located on the upper surface of the front area 4 of the rotating platform 1. The left cover 81 and the right front cover 82 are fastened to the rotating platform 1 and the main frame 6 with bolts. The right rear cover 83 and the tail cover 84 adopt a hinge mounting structure; opening the right rear cover 83 can facilitate the maintenance of components such as the radiator 34 and the motor 33; opening the tail cover 84 can facilitate the maintenance of components such as the power battery pack 21, the water pump 53, and the distribution box 54. Honeycomb holes are provided on the surfaces of the left cover 81 and the right rear cover 83 corresponding to the fan's action area 341 to ensure smooth air intake and exhaust of the radiator 34 and achieve good heat dissipation performance.

[0057] like Figure 6 , Figure 7 As shown, a mini electric excavator comprises a lower vehicle and the upper vehicle mentioned above; the upper vehicle can rotate relative to the lower vehicle.

[0058] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle, comprising a rotating platform (1), characterized in that: The rotary platform (1) is divided into: A high voltage area (2), located behind the rotation center, is provided with a device for providing electrical energy; A hydraulic source area (3), located to the right rear of the rotation center, is provided with a device for providing pressure energy; The front area (4), located in front of the rotation center, is equipped with a control valve group (41) and a rotation motor (42).

2. The vehicle boarding device according to claim 1, characterized in that: The high-voltage area (2) is provided with a power battery pack (21), a power battery controller (22) and a main controller (23); the power battery pack (21) is fastened on the rotary platform (1), and the power battery controller (22) and the main controller (23) are respectively stacked on top of the power battery pack (21).

3. The vehicle boarding device according to claim 2, characterized in that: The hydraulic source area (3) is provided with a hydraulic oil tank (31), an oil pump (32), a motor (33) and a radiator (34); the hydraulic oil tank (31), the oil pump (32) and the motor (33) are fastened to the rotary platform (1) in sequence from front to back, and the radiator (34) is stacked on top of the motor (33); The hydraulic oil tank (31), the oil pump (32), the radiator (34), the control valve group (41) and the rotary motor (42) are interconnected by pipelines to form a hydraulic transmission circuit.

4. The vehicle boarding device according to claim 3, characterized in that: The radiator (34) is stacked on top of the motor (33) using a bracket, and the radiator (34) is provided with a fan, and the active area (341) of the fan is higher than the power battery pack (21).

5. The vehicle boarding device according to claim 1, characterized in that: The front area (4) is also provided with a battery (43); the control valve group (41), the rotary motor (42) and the battery (43) are fastened to the rotary platform (1) in sequence from left to right, and the rotary motor (42) is located next to the rotary center.

6. The vehicle boarding device according to claim 3, characterized in that: The rotary platform (1) is further divided into a tail area located above and behind the high-voltage area (2); the tail area is equipped with a high-voltage charging port (51), a water tank (52), a water pump (53) and a distribution box (54); The water tank (52), the water pump (53), the power battery pack (21), the power battery controller (22) and the radiator (34) are interconnected by pipelines to form a water-cooling heat dissipation circuit.

7. The vehicle boarding device according to claim 6, characterized in that: The tail region is also provided with a box body (55) disposed on the high-voltage charging port (51) and the water tank (52), and the box body (55) is provided with an openable and closable inspection door (551).

8. The vehicle boarding device according to claim 1, characterized in that: The upper vehicle also includes a main frame (6) and a cab (7); the main frame (6) is erected above the high-pressure area (2), its bottom is fastened to the revolving platform (1), and the cab (7) is arranged on its top.

9. The vehicle boarding device according to claim 8, characterized in that: The upper vehicle also includes a covering member (8) arranged on the surface of the rotating platform (1) or the surface of the main frame (6), and the covering member (8) includes one or more of a left cover (81), a right front cover (82), a right rear cover (83), a tail cover (84), a partition (85), and a floor (86).

10. A mini electric excavator, characterized in that: It comprises an alighting vehicle and an aboard vehicle as claimed in any one of claims 1 to 9; the aboard vehicle can be rotated relative to the alighting vehicle.

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