Power system and electric wheel apparatus

Abstract

The application relates to the technical field of electric wheel equipment, and provides a power system and electric wheel equipment. The power system comprises a vehicle frame, electric wheels and generator sets; the vehicle frame is provided with the electric wheels on both sides; the width of the front end of the vehicle frame is larger than that of the rear end; the front end of the vehicle frame is provided with two generator sets; the two generator sets are arranged side by side on the inner side of the vehicle frame; the part of the inner side of the vehicle frame behind the two generator sets is also provided with a generator set; each generator set is electrically connected with the electric wheels and can supply power to the electric wheels. Three small-power generator sets are used to replace the large-power generator set in the prior art, the universality of the spare parts of the generator set is improved, the purchase cost of the spare parts is reduced, and then the maintenance cost of the electric wheel mine car is reduced. Meanwhile, the generator sets are installed based on the feature that the front end of the vehicle frame is wide and the rear end is narrow, so that the structural space of the vehicle frame is fully utilized, the power system is more compact, the width of the whole vehicle does not need to be increased, and the passing performance of the electric wheel mine car is ensured.

Description

Technical Field

[0001] This invention relates to the field of electric wheel equipment technology, and more particularly to a power system and electric wheel equipment. Background Technology

[0002] Traditional large-tonnage mining dump trucks typically use electric wheel drive, commonly known as electric wheel mining trucks. Current electric wheel mining truck power systems usually employ a high-power engine to drive a high-power generator to generate electricity, which in turn drives the electric wheels. However, high-power engines and generators are bulky, and corresponding spare parts are scarce, leading to expensive spare parts and long supply cycles, resulting in high maintenance costs for electric wheel mining trucks. Summary of the Invention

[0003] This invention provides a power system and electric wheel equipment to solve the problems of high maintenance costs of electric wheel mining cars due to the large size of the engine and generator, the scarcity of spare parts, and the high price of spare parts in the prior art, thereby achieving the effect of reducing the maintenance cost of electric wheel mining cars.

[0004] This invention provides a power system, including a vehicle frame, electric wheels, and a generator set;

[0005] The electric wheels are mounted on both sides of the frame. The width of the front end of the frame is greater than the width of the rear end of the frame. Two generator sets are provided at the front end of the frame and are arranged side by side on the inner side of the frame. A generator set is also provided on the inner side of the frame behind the two generator sets. Each generator set is electrically connected to the electric wheel and can supply power to the electric wheel.

[0006] According to a power system provided by the present invention, the width of the frame gradually decreases along the direction from the front end to the rear end of the frame;

[0007] Along the direction from the front end to the rear end of the vehicle frame, the two generator sets located at the front end of the vehicle frame gradually tilt towards each other.

[0008] According to a power system provided by the present invention, the generator set located behind the two generator sets is offset to one side of the vehicle frame, so that the side of the vehicle frame away from the offset direction of the generator set forms an installation space.

[0009] According to a power system provided by the present invention, a cooling device for cooling the electric wheel is further included. The cooling device is connected to the electric wheel through a cooling pipe, which passes through the installation space.

[0010] According to a power system provided by the present invention, the installation height of the generator set located behind the two generator sets is higher than the installation height of the two generator sets located at the front end of the vehicle frame.

[0011] According to a power system provided by the present invention, at least one of the generator sets includes a base, an internal combustion engine, a generator, and a radiator;

[0012] The base is connected to the vehicle frame, and the radiator, the internal combustion engine and the generator are sequentially mounted on the base along the direction from the front end to the rear end of the vehicle frame.

[0013] The internal combustion engine is connected to the generator to drive the generator to rotate, and the radiator is connected to the internal combustion engine to cool the internal combustion engine.

[0014] According to a power system provided by the present invention, the generator set further includes a connecting rod, the two ends of which are respectively connected to the radiator and the base.

[0015] According to a power system provided by the present invention, a converter module and a power battery are also included, wherein the electric wheel, the power battery and each of the generator sets are connected to the converter module.

[0016] According to a power system provided by the present invention, a resistor grid is further included, the resistor grid being connected to the converter module.

[0017] The present invention also provides an electric wheel device, including the power system described above.

[0018] The power system provided by this invention utilizes three relatively small generator sets instead of the high-power generator sets in the prior art by setting two generator sets at the front end of the chassis and one generator set behind the two generator sets. This improves the versatility of generator set parts, thereby reducing the purchase cost of parts and consequently reducing the maintenance cost of the electric wheel mining car. Furthermore, based on the chassis's wider front and narrower rear design, arranging two generator sets at the front end and one generator set behind them fully utilizes the structural space of the chassis, making the power system more compact. This eliminates the need to increase the overall width of the vehicle to install three generator sets, thus ensuring the electric wheel mining car's maneuverability.

[0019] Furthermore, the electric wheel device provided by the present invention, since it incorporates the power system provided by the present invention, also incorporates all the advantages of the power system described above. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the power system provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the connection structure between the generator set and the electric wheel provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the generator set provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the electric wheel mining car provided in the embodiment of the present invention.

[0025] Figure label:

[0026] 1. Frame; 2. Electric wheels;

[0027] 3. Generator set; 301. Base; 302. Internal combustion engine; 303. Generator; 304. Radiator; 305. Connecting rod;

[0028] 4. Converter module; 5. Power battery; 6. Resistor grid; 7. Cab; 8. Front axle assembly; 9. Cargo box; 10. Fuel system; 11. Lifting system; 12. Hydraulic system. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] The following is combined Figures 1 to 4 Describe the power system in an embodiment of the present invention.

[0031] Specifically, the power system includes a frame 1, electric wheels 2, and a generator set 3.

[0032] The vehicle frame 1 has electric wheels 2 on both sides. The width of the front end of the frame 1 is greater than the width of the rear end. "Front and rear" refers to the area before and after the electric wheel assembly is mounted on the frame 1. (Reference) Figure 1 As shown, optionally, the power system also includes a front axle assembly 8, which is mounted on the front end of the frame 1, with a tire at each end. The weight of the electric wheel device's chassis 9 is primarily distributed to the rear end of the frame 1. To improve the load-bearing capacity of the rear end of the frame 1, each of the electric wheels 2 mounted on both sides of the rear end of the frame 1 has two tires. Furthermore, to prevent the rear end of the power system from becoming excessively wide, the width of the rear end of the frame 1 is narrowed to improve the passability of the electric wheel device.

[0033] Two generator sets 3 are located at the front end of the frame 1, and the two generator sets 3 are arranged side by side on the inner side of the frame 1, that is, between the two longitudinal beams of the frame 1. A generator set 3 is also located on the inner side of the frame 1 behind the two generator sets 3. Each generator set 3 is electrically connected to the electric wheel 2 and can supply power to the electric wheel 2.

[0034] The power system provided in this embodiment of the invention utilizes three relatively small generator sets 3 instead of the high-power generator sets in the prior art by setting two generator sets 3 at the front end of the frame 1 and one generator set 3 behind the two generator sets 3. This improves the versatility of generator set 3 parts, thereby reducing the purchase cost of generator set 3 parts and thus reducing the maintenance cost of the electric wheel equipment. Simultaneously, based on the front-wide-rear-narrow characteristic of the frame 1, arranging two generator sets 3 at the front end of the frame 1 and one generator set 3 behind the two generator sets 3 fully utilizes the structural space of the frame 1, making the power system more compact. It eliminates the need to increase the overall width of the vehicle to install three generator sets 3, thus ensuring the passability of the electric wheel equipment.

[0035] refer to Figure 1 As shown, in some embodiments provided by the present invention, the width of the inner side of the frame 1 gradually decreases along the direction from the front end to the rear end. That is, along the direction from the front end to the rear end of the frame 1, the two longitudinal beams on both sides of the frame 1 gradually tilt towards each other. In this way, there is no abrupt change in cross-section in the direction from the front end to the rear end of the frame 1, thereby avoiding stress concentration problems, improving the structural strength of the frame 1, and thus improving the load-bearing capacity of the frame 1.

[0036] Along the direction from the front end to the rear end of the frame 1, the two generator sets 3 located at the front end of the frame 1 are gradually tilted towards each other. This arrangement can further make full use of the structural space of the frame 1, making the power system more compact, without increasing the width of the frame 1 to install the generator sets 3, thereby ensuring the passability of the electric wheel equipment.

[0037] refer to Figure 3As shown, in some embodiments provided by the present invention, at least one generator set 3 includes a base 301, an internal combustion engine 302, a generator 303, and a radiator 304.

[0038] The base 301 is connected to the frame 1. Along the direction from the front end to the rear end of the frame 1, the radiator 304, the internal combustion engine 302 and the generator 303 are sequentially installed on the base 301.

[0039] The internal combustion engine 302 is connected to the generator 303 to drive the generator 303 to rotate. The radiator 304 is connected to the internal combustion engine 302 to cool the internal combustion engine 302.

[0040] Thus, since the width of the radiator 304 is greater than the width of the internal combustion engine 302, by sequentially arranging the radiator 304, internal combustion engine 302, and generator 303 along the front to rear of the frame 1, the generator set 3 also forms a structure that is wider at the front and narrower at the rear. Furthermore, the wider end of the generator set 3 is positioned at the front of the frame 1, allowing the generator set 3 to adapt to the front-wide, rear-narrow structure of the frame 1, thereby making more efficient use of the structural space of the frame 1. Simultaneously, mounting the radiator 304, internal combustion engine 302, and generator 303 on the base 301 to form a power generation unit, and then mounting it on the frame via the base 301, facilitates the individual towing or disassembly and hoisting of each generator set 3, thereby improving the convenience of maintenance for the generator set 3.

[0041] refer to Figure 1 As shown, optionally, the included angle between the axes of the two generator sets 3 located at the front end of the frame 1 is set to α. For example, the value of α ranges from 0° to 20°.

[0042] refer to Figure 3 As shown, in some embodiments of the present invention, the generator set 3 further includes a connecting rod 305, the two ends of which are connected to the radiator 304 and the base 301, respectively. Since the radiator 304 is relatively high, in order to improve the connection rigidity between the radiator 304 and the frame 1 and prevent excessive swaying of the radiator 304, the connecting rod 305 can be connected to both the radiator 304 and the base 301, thereby improving the connection rigidity between the radiator 304 and the base 301.

[0043] In some embodiments provided by this invention, the generator set 3 located behind the two generator sets 3 is offset to one side of the frame 1, so that the side of the frame 1 away from the offset direction of the generator set 3 forms an installation space. This arrangement allows for the arrangement of piping within the installation space, thereby improving the space utilization of the frame 1 and making the power system structure more compact.

[0044] In some embodiments provided by the present invention, the power system further includes a cooling device for cooling the electric wheel 2. For example, the cooling device can be configured as an air-cooled radiator. The cooling device is connected to the electric wheel 2 via cooling pipes, which pass through the installation space. That is, by offsetting the generator set 3, which is located behind the two generator sets 3, to one side of the frame 1, a large amount of space can be saved for arranging the cooling pipes, thereby making more rational and effective use of the space of the frame 1.

[0045] Furthermore, the distance between the axis of the generator set 3 located behind the two generator sets 3 and the central axis plane of the frame 1 is set as d. For example, the value of d can range from 0mm to 1000mm. The generator set 3 located behind the two generator sets 3 can be offset to the left or right side of the frame 1.

[0046] refer to Figure 4 As shown, in some embodiments of the present invention, the installation height of the generator set 3 located behind the two generator sets 3 is higher than the installation height of the two generator sets 3 located at the front end of the frame 1. By making the installation height of the rear generator set 3 higher than that of the front generator set 3, the front generator set 3 can be prevented from blocking airflow into the rear generator set 3, and the impact of the hot airflow generated by the front generator set 3 on the rear generator set 3 can be reduced, thereby improving the cooling efficiency of the rear generator set 3. At the same time, the two front generator sets 3 are lower in height, resulting in a lower center of gravity for the power system, which in turn improves the stability of the electric wheel equipment during operation.

[0047] refer to Figure 2 As shown, in some embodiments provided by the present invention, the power system further includes a converter module 4 and a power battery 5. The electric wheel 2, the power battery 5, and each generator set 3 are all connected to the converter module 4. Optionally, the converter module 4 can be configured as a converter or a converter cabinet.

[0048] Specifically, the converter module 4 can rectify and combine the electrical energy generated by the three generator sets 3, converting it into usable electrical energy. At the same time, the electric wheel 2 and the power battery 5 are both connected to the converter module 4. The converter module 4 can transmit the electrical energy generated by the generator sets 3 to the electric wheel 2 to drive the electric wheel 2 to rotate, and it can also transmit the electrical energy generated by the generator sets 3 to the power battery 5 for storage.

[0049] Meanwhile, when the electric wheel device is going downhill, braking, or decelerating, it generates electricity by switching the working mode of the electric wheel 2 and transmits the electrical energy to the converter module 4, which then transmits it to the power battery 5 for storage.

[0050] By incorporating a power battery 5, excess electrical energy generated by the generator set 3 can be stored when the electric wheel device is operating at low power consumption, thereby keeping the internal combustion engine 302 at its optimal fuel-efficient speed and reducing fuel consumption. The power battery 5 can also be used to recover and store electrical energy generated by the electric wheel 2 during downhill driving, braking, or deceleration. Furthermore, when the electric wheel device requires significant power, the power battery 5 and generator set 3 can simultaneously supply power to the electric wheel 2, meeting the high power demands of the electric wheel device and thus reducing fuel consumption while improving power performance.

[0051] In some embodiments of the present invention, the power system further includes a resistor grid 6, which is connected to the converter module 4. By setting the resistor grid 6, when the power battery 5 has sufficient charge and can no longer recover the electrical energy generated by the electric wheel 2 during downhill driving, braking, or deceleration, the electrical energy generated by the electric wheel 2 can be transmitted to the resistor grid 6 through the converter module 4, and the electrical energy can be converted into heat energy for consumption through the resistor grid 6.

[0052] An electric wheel device is also provided in this embodiment of the invention.

[0053] Specifically, the electric wheel equipment includes the power system described above.

[0054] It should be noted that electric wheel equipment includes a power system and therefore all the advantages of a power system, which will not be elaborated here.

[0055] It should also be noted that electric wheel equipment includes, but is not limited to, electric wheel mining cars.

[0056] In some embodiments provided by the present invention, the electric wheel device further includes a cargo box 9, a lifting system 11, a hydraulic system 12, and a fuel system 10.

[0057] The vehicle body 9 is rotatably connected to the power system. The lifting system 11 includes a lifting cylinder, with both ends rotatably connected to the power system and the vehicle body 9, respectively, for driving the vehicle body 9 to tilt. The hydraulic system 12 includes an oil pump connected to the lifting cylinder, providing power to the lifting cylinder. The fuel system 10 includes a fuel tank connected to the internal combustion engine 302, for supplying fuel to the internal combustion engine 302.

[0058] Furthermore, the electric wheel equipment also includes a driver's cab 7 for operating the electric wheel equipment.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power system, characterized in that, Includes a frame (1), electric wheels (2), and a generator set (3); The electric wheels (2) are installed on both sides of the frame (1). The width of the front end of the frame (1) is greater than the width of the rear end of the frame (1). Two generator sets (3) are provided at the front end of the frame (1), and the two generator sets (3) are arranged side by side on the inner side of the frame (1). A generator set (3) is also provided on the inner side of the frame (1) behind the two generator sets (3). Each generator set (3) is electrically connected to the electric wheel (2) and can supply power to the electric wheel (2). Along the direction from the front end to the rear end of the frame (1), the two generator sets (3) located at the front end of the frame (1) gradually tilt towards each other; The installation height of the generator set (3) located behind the two generator sets (3) is higher than the installation height of the two generator sets (3) located at the front end of the frame (1).

2. The power system according to claim 1, characterized in that, The width of the frame (1) gradually decreases along the direction from the front end to the rear end.

3. The power system according to claim 1, characterized in that, The generator set (3) located behind the two generator sets (3) is offset to one side of the frame (1) so that the side of the frame (1) away from the offset direction of the generator set (3) forms an installation space.

4. The power system according to claim 3, characterized in that, It also includes a cooling device for cooling the electric wheel (2), the cooling device being connected to the electric wheel (2) via a cooling pipe, the cooling pipe being installed in the installation space.

5. The power system according to claim 1, characterized in that, At least one of the generator sets (3) includes a base (301), an internal combustion engine (302), a generator (303), and a radiator (304); The base (301) is connected to the vehicle frame (1), and the radiator (304), the internal combustion engine (302) and the generator (303) are sequentially installed on the base (301) in the direction from the front end to the rear end of the vehicle frame (1). The internal combustion engine (302) is connected to the generator (303) to drive the generator (303) to rotate, and the radiator (304) is connected to the internal combustion engine (302) to cool the internal combustion engine (302).

6. The power system according to claim 5, characterized in that, The generator set (3) also includes a connecting rod (305), the two ends of which are connected to the radiator (304) and the base (301) respectively.

7. The power system according to claim 1, characterized in that, It also includes a converter module (4) and a power battery (5), wherein the electric wheel (2), the power battery (5) and each of the generator sets (3) are connected to the converter module (4).

8. The power system according to claim 7, characterized in that, It also includes a resistor gate (6), which is connected to the converter module (4).

9. An electric wheel device, characterized in that, Includes the power system described in any one of claims 1-8.

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