Dual-motor-driven hybrid loader

Abstract

The utility model discloses a dual-motor-driven hybrid power loader in the technical field of loaders, and aims to solve the problems that the action efficiency of the loader is reduced and the loader is inconvenient to repair and maintain due to limited cruising ability in the prior art. A battery bin is fixed to one end of the frame, a hydraulic motor and a walking motor are fixed to the other end of the frame, the hydraulic motor and the walking motor are arranged side by side, the hydraulic motor is in transmission connection with a hydraulic pump, the hydraulic pump is in transmission connection with a hydraulic system, and the walking motor is in transmission connection with a transmission system. According to the utility model, the hydraulic motor and the walking motor are arranged in parallel, so that the arrangement space is saved, and the trends of pipelines and lines are optimized; when the electric quantity of the battery pack does not meet the set value, the range extender generates electricity and supplies the electricity to the battery pack, the situation that the electric quantity of the battery pack is insufficient is avoided, the situation that the service time of the whole machine is affected by the charging problem of the battery pack is avoided, and the high cruising ability of the whole machine is achieved.

Description

Technical Field

[0001] The utility model relates to a dual-motor driven hybrid loader, belonging to the technical field of loaders. Background Art

[0002] Loaders are widely used in the fields of engineering machinery such as roads, railways, and mines. They are mainly used to shovel, load, unload, and transport bulk materials such as soil and stone, and can also perform light shoveling operations on rocks and hard soil. Because loaders have the advantages of fast operating speed, high efficiency, good maneuverability, and easy operation, they have become one of the main types of earthwork construction in engineering construction. Most of the existing loaders at home and abroad are powered by fuel, and there are also a variety of battery-driven pure electric loaders. Electric loaders have received widespread attention in the domestic loader industry due to their pollution-free and high efficiency.

[0003] Most of the existing electric loaders use dual travel motors to meet the working conditions. Due to their own high-load working requirements, the endurance of the dual travel motor loader is limited, which in turn reduces the efficiency of the loader and affects the endurance of the loader. In addition, the structure of the existing loader is relatively complex, which is not convenient for repair and maintenance. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a dual-motor driven hybrid loader to solve the problem that most of the existing electric loaders use dual travel motors to meet the working conditions. Due to their own high-load working requirements, the endurance of the dual travel motor loader is limited, which in turn reduces the working efficiency of the loader, affects the endurance of the loader, and the structure of the existing loader is relatively complex.

[0005] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0006] The utility model provides a dual-motor driven hybrid loader, comprising a frame, a battery compartment for installing a battery pack is fixed at one end of the frame, a hydraulic motor and a travel motor electrically connected to the battery pack are fixed at the other end of the frame, the hydraulic motor and the travel motor are arranged in parallel, the hydraulic motor is transmission-connected to a hydraulic pump, the hydraulic pump is transmission-connected to a hydraulic system, and the travel motor is transmission-connected to a transmission system;

[0007] The battery pack is connected to a range extender, and the range extender is used to charge the battery pack.

[0008] Furthermore, the range extender is fixedly connected to the vehicle frame.

[0009] Further, a cooling system for cooling the battery pack is fixed on one end of the vehicle frame on one side of the battery pack.

[0010] Further, both the traveling motor and the hydraulic motor are connected to the cooling system.

[0011] Further, both the traveling motor and the hydraulic motor are detachably connected to the vehicle frame by bolts, and the traveling motor is located below the hydraulic motor.

[0012] Further, shock absorbers and gaskets are sleeved on the outer wall of the bolts, and one end of each bolt is threadedly connected with a nut.

[0013] Further, the number of the shock absorbers is two, and they are distributed on both sides of the traveling motor or the hydraulic motor.

[0014] Further, the traveling motor is mounted on the vehicle frame in a suspended manner.

[0015] Further, the transmission system includes an intermediate transmission shaft, the intermediate transmission shaft is connected to one end of the traveling motor, the intermediate transmission shaft is in transmission connection with a front transmission shaft through a support seat, and the front transmission shaft is in transmission connection with a front axle.

[0016] Further, the transmission system further includes a rear transmission shaft, the rear transmission shaft is in transmission connection with the other end of the traveling motor, and the rear transmission shaft is in transmission connection with a rear axle.

[0017] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0018] 1. In this dual-motor-driven hybrid wheel loader, the hydraulic motor and the traveling motor are arranged side by side, saving the layout space and optimizing the routing of pipelines and wires, making the device convenient for maintenance and repair work; through the cooperation of the battery pack and the range extender, when the power of the battery pack does not meet the set value, the range extender generates electricity to supply the battery pack, avoiding the situation of insufficient battery pack power, and further avoiding affecting the use time of the whole machine due to the charging problem of the battery pack, thus realizing the high endurance ability of the whole machine, avoiding problems such as high load and waste of electric energy in the dual traveling motors, effectively improving the operation stability of the whole machine, and greatly improving the power, load and operation duration of the whole machine.

[0019] 2. In this dual-motor-driven hybrid wheel loader, the shock absorbers further reduce problems such as alternating torque impact during the operation of the traveling motor and the hydraulic motor, ensuring the service life and reliability of the traveling motor and the hydraulic motor.

[0020] 3. The transmission system of the dual-motor-driven hybrid loader retains the layout and structure of the existing loader to the greatest extent, borrows the assembly parts of the existing loader to the greatest extent, improves the commonality rate of components. Through the modular design of the whole machine, the advantages of the existing loader platform can be utilized and the design cost and production cost can be reduced. Description of the Drawings

[0021] Figure 1 is a schematic three-dimensional structure diagram of a dual-motor-driven hybrid loader provided according to an embodiment of the present invention;

[0022] Figure 2 is a schematic three-dimensional structure diagram of the transmission system provided according to an embodiment of the present invention.

[0023] In the figure: 1. Frame; 2. Cooling system; 3. Battery pack; 4. Range extender; 5. Travel motor; 6. Hydraulic motor; 7. Hydraulic pump; 8. Shock absorber; 9. Gasket; 10. Bolt; 11. Nut; 12. Front axle; 13. Front drive shaft; 14. Support seat; 15. Intermediate drive shaft; 16. Rear drive shaft; 17. Rear axle. Detailed Embodiments

[0024] The present invention will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] As Figure 1-2 shown, the present utility model provides a dual-motor-driven hybrid loader, including a frame 1. One end of the frame 1 is fixed with a battery compartment for installing a battery pack 3, and the other end of the frame 1 is fixed with a hydraulic motor 6 and a traveling motor 5 that are electrically connected to the battery pack 3. The hydraulic motor 6 and the traveling motor 5 are arranged in parallel. The hydraulic motor 6 is drivingly connected to a hydraulic pump 7, the hydraulic pump 7 is drivingly connected to a hydraulic system, and the traveling motor 5 is drivingly connected to a transmission system; the battery pack 3 is connected to a range extender 4, and the range extender 4 is used to charge the battery pack 3.

[0028] Specifically, the hydraulic motor 6 of the present application is drivingly connected to a hydraulic pump 7, and the hydraulic pump 7 is drivingly connected to a hydraulic system, thereby providing power for the whole machine's hydraulic system; the present application realizes the hybrid drive of the loader, with a simple layout structure, which is convenient for installation and production. Through the layout design of the traveling motor 5 and the hydraulic motor 6, the hydraulic motor 6 provides power for the whole machine's hydraulic system, and the traveling motor 5 drives the whole machine's transmission system. Moreover, a new design is made for the installation form and layout structure of the motors, that is, the hydraulic motor 6 and the traveling motor 5 are arranged in parallel, saving the layout space and optimizing the routing of pipelines and wires, making the device convenient for maintenance and repair work; through the cooperation of the battery pack 3 and the range extender 4 in the present application, when the power of the battery pack 3 does not meet the set value, the range extender 4 generates electricity to supply the battery pack 3, so as to avoid the situation of insufficient power of the battery pack 3, and further avoid affecting the use time of the whole machine due to the charging problem of the battery pack 3, realizing the high endurance ability of the whole machine, avoiding problems such as high load and power waste of the two traveling motors 5, effectively improving the stability of the whole machine's operation, and greatly improving the power, load, and operation duration of the whole machine; optionally, the frame 1 is welded by several steel members; optionally, the range extender 4 is fixedly connected to the frame 1; optionally, the battery pack 3 is fixedly connected to the frame 1.

[0029] An embodiment, at one end of the vehicle frame 1, a cooling system 2 for cooling the battery pack 3 is fixed on one side of the battery pack 3. The traveling motor 5 and the hydraulic motor 6 are both connected to the cooling system 2, and the cooling system 2 is used to cool the battery pack 3, the traveling motor 5 and the hydraulic motor 6.

[0030] An embodiment, the traveling motor 5 and the hydraulic motor 6 are both detachably connected to the vehicle frame 1 through bolts 10. The traveling motor 5 is located below the hydraulic motor 6. A shock absorber 8 and a gasket 9 are sleeved on the outer wall of the bolt 10. One end of the bolt 10 is threadedly connected with a nut 11. The number of the shock absorbers 8 is two and they are distributed on both sides of the traveling motor 5 or the hydraulic motor 6.

[0031] Specifically, both sides of the traveling motor 5 are sequentially connected to the lower part of one end of the vehicle frame 1 through bolts 10, shock absorbers 8, gaskets 9, and nuts 11; both sides of the hydraulic motor 6 are sequentially connected to the upper part of one end of the vehicle frame 1 through bolts 10, shock absorbers 8, gaskets 9, and nuts 11; the specific connection method of the traveling motor 5 and the hydraulic motor 6 is bolts 10, gaskets 9, shock absorbers 8, the traveling motor 5 or the hydraulic motor 6, shock absorbers 8, nuts 11, that is, shock absorbers 8 are installed on both sides of the traveling motor 5 and the hydraulic motor 6; in this application, the shock absorbers 8 further reduce problems such as alternating torque impact during the operation of the traveling motor 5 and the hydraulic motor 6, and ensure the service life and reliability of the traveling motor 5 and the hydraulic motor 6.

[0032] An embodiment, the traveling motor 5 is suspended and installed on the vehicle frame 1.

[0033] As Figure 2 shown, an embodiment, the transmission system includes an intermediate transmission shaft 15. The intermediate transmission shaft 15 is connected to one end of the traveling motor 5. The intermediate transmission shaft 15 is drivingly connected to the front transmission shaft 13 through a support seat 14. The front transmission shaft 13 is drivingly connected to the front axle 12. The transmission system further includes a rear transmission shaft 16. The rear transmission shaft 16 is connected to the other end of the traveling motor 5. The rear transmission shaft 16 is drivingly connected to the rear axle 17.

[0034] Specifically, the transmission system of this application retains the layout and structure of the existing loader to the greatest extent, borrows the assembly parts of the existing loader to the greatest extent, improves the commonality rate of parts, and through the modular design of the whole machine, can utilize the advantages of the existing loader platform and reduce the design cost and production cost.

[0035] In summary, the traveling motor 5 of the present application is integrally integrated, further improving the transmission efficiency and the overall machine endurance time; the present application is a loader with dual-motor input, which can further optimize the motor input technology in the domestic industry, improve the reliability of the transmission system, operate stably, enhance the overall machine endurance capacity, and meet the working conditions of high-power and high-load loaders; at the same time, the overall machine is designed in a serialized and modular manner, which can retain the existing structure of the loader to the greatest extent, making the loader easy to install and maintain, reducing the difficulty of maintenance and repair of the overall machine, and greatly improving the user experience.

[0036] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A dual-motor-driven hybrid loader, characterized in that, It includes a frame (1). At one end of the frame (1), a battery compartment for installing a battery pack (3) is fixed. At the other end of the frame (1), a hydraulic motor (6) and a traveling motor (5) electrically connected to the battery pack (3) are fixed. The hydraulic motor (6) and the traveling motor (5) are arranged in parallel. The hydraulic motor (6) is drivingly connected to a hydraulic pump (7), the hydraulic pump (7) is drivingly connected to a hydraulic system, and the traveling motor (5) is drivingly connected to a transmission system; The battery pack (3) is connected to a range extender (4), and the range extender (4) is used to charge the battery pack (3).

2. The dual-motor-driven hybrid wheel loader according to claim 1, wherein The range extender (4) is fixedly connected to the frame (1).

3. The dual-motor-driven hybrid wheel loader according to claim 1, wherein, At one end of the frame (1) and on one side of the battery pack (3), a cooling system (2) for cooling the battery pack (3) is fixed.

4. The dual-motor-driven hybrid wheel loader according to claim 3, wherein Both the traveling motor (5) and the hydraulic motor (6) are connected to the cooling system (2).

5. The dual-motor-driven hybrid loader according to claim 1, wherein Both the traveling motor (5) and the hydraulic motor (6) are detachably connected to the frame (1) by bolts (10), and the traveling motor (5) is located below the hydraulic motor (6).

6. The dual-motor-driven hybrid wheel loader according to claim 5, wherein A shock absorber (8) and a gasket (9) are sleeved on the outer wall of the bolt (10), and one end of the bolt (10) is threadedly connected to a nut (11).

7. The dual-motor-driven hybrid wheel loader according to claim 6, wherein The number of the shock absorbers (8) is two and they are distributed on both sides of the traveling motor (5) or the hydraulic motor (6).

8. The dual-motor-driven hybrid wheel loader according to claim 1, wherein, The traveling motor (5) is mounted on the frame (1) in a suspended manner.

9. The dual-motor-driven hybrid loader according to claim 1, wherein The transmission system includes an intermediate drive shaft (15). The intermediate drive shaft (15) is connected to one end of the traveling motor (5), and the intermediate drive shaft (15) is drivingly connected to a front drive shaft (13) through a support seat (14), and the front drive shaft (13) is drivingly connected to a front axle (12).

10. The dual-motor-driven hybrid wheel loader according to claim 9, wherein The transmission system further includes a rear drive shaft (16). The rear drive shaft (16) is drivingly connected to the other end of the traveling motor (5), and the rear drive shaft (16) is drivingly connected to a rear axle (17).

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