Dual-drive mechanism of hydraulic pump power unit

Abstract

The utility model provides a dual-drive mechanism of a hydraulic pump power unit, which is mounted on an upper vehicle platform and comprises an internal combustion engine, a drive motor and a main pump input end which are sequentially mounted on the upper vehicle platform. The driving motor is installed between the internal combustion engine and the input end of the main pump through a V-shaped support, a first coupler is arranged between the internal combustion engine and the driving motor, and a second coupler is arranged between the driving motor and the input end of the main pump. The driving motor is a permanent magnet direct current motor; the first coupler is a multi-disc electromagnetic clutch, a power unit is provided for the hydraulic pump in a dual-drive mode of internal combustion engine drive and motor drive, the access state of dual drive can be switched according to the load condition of a hydraulic system, and the problem that the optimal output interval of an internal combustion engine is small is solved; the fuel economy of the power unit is improved, the working state of the internal combustion engine is also improved, the working efficiency of the power unit is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic systems, and in particular to a dual-drive mechanism for a hydraulic pump power unit. Background Technology

[0002] In common construction machinery, taking tracked construction machinery as an example, the power unit is usually installed on the upper platform, and is mostly an internal combustion engine driving the main pump of the hydraulic system to provide energy for the whole vehicle. However, the commonly used internal combustion engine drive method often has problems such as a small optimal output power plateau range and poor economy in low-power and intermittent output situations. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing power unit is driven by an internal combustion engine, which has a small optimal output range and poor economy. This utility model provides a dual-drive mechanism for a hydraulic pump power unit to solve the above problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a dual-drive mechanism for a hydraulic pump power unit, installed on a vehicle platform, including an internal combustion engine, a drive motor, and a main pump input end, which are sequentially installed on the vehicle platform; the drive motor is installed between the internal combustion engine and the main pump input end via a V-shaped support; a first coupling is provided between the internal combustion engine and the drive motor; a second coupling is provided between the drive motor and the main pump input end; the drive motor is a permanent magnet DC motor; and the first coupling is a multi-plate electromagnetic clutch.

[0005] Furthermore: the dual-drive mechanism is provided with a hood; an air intake chamber is provided on the hood, located on the side of the internal combustion engine; an air intake grille is provided on the top of the air intake chamber, and an air intake fan is provided on the side of the internal combustion engine; the exhaust pipe and the air intake pipe of the internal combustion engine are both located on the top of the hood.

[0006] Furthermore, a control unit is provided above the drive motor.

[0007] Furthermore, the internal combustion engine is mounted on the vehicle platform via engine mounts.

[0008] The beneficial effects of this utility model are that the dual-drive mechanism of the hydraulic pump power unit adopts a dual-drive method of internal combustion engine drive and electric motor drive to provide power unit for hydraulic pump. The dual-drive engagement state can be switched according to the load of hydraulic system, which makes up for the problem of small optimal output range of internal combustion engine, and can provide auxiliary power to internal combustion engine. While improving the fuel economy of power unit, it also improves the working state of internal combustion engine, improves the working efficiency of power unit and extends service life. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a schematic diagram of the structure of a dual-drive mechanism for a hydraulic pump power unit according to this utility model;

[0011] Figure 2 yes Figure 1 A structural diagram omitting the hood;

[0012] Figure 3 This is a partial structural diagram of the drive motor installation.

[0013] In the diagram: 1. Upper platform; 2. Internal combustion engine; 3. Drive motor; 4. Main pump input end; 5. First coupling; 6. Second coupling; 7. V-shaped support; 8. Engine cover; 9. Intake chamber; 10. Intake grille; 11. Intake fan; 12. Exhaust pipe; 13. Intake pipe; 14. Control unit; 15. Engine feet. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0016] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of the present invention pertain.

[0018] like Figures 1 to 3 As shown, this utility model provides a dual-drive mechanism for a hydraulic pump power unit, installed on a vehicle platform 1, including an internal combustion engine 2, a drive motor 3, and a main pump input end 4, which are sequentially installed on the vehicle platform 1; the drive motor 3 is installed between the internal combustion engine 2 and the main pump input end 4 via a V-shaped support 7; a first coupling 5 is provided between the internal combustion engine 2 and the drive motor 3; a second coupling 6 is provided between the drive motor 3 and the main pump input end 4; the drive motor 3 is a permanent magnet DC motor; the first coupling 5 is a multi-plate electromagnetic clutch.

[0019] The dual-drive mechanism is used in the hydraulic pump drive of construction machinery. The hydraulic pump and power unit of construction machinery are generally installed on the upper platform 1, mainly providing hydraulic power for the entire hydraulic system of the vehicle. The dual-drive mechanism of this application can realize the dual drive cooperation of internal combustion engine drive and electric drive. When used at low power or in uneconomical intermittent use, the electric drive mode can replace the internal combustion engine drive to obtain greater low torque, ensuring the continuous and stable output of the hydraulic pump. In full power or stable continuous situations, the internal combustion engine can be used alone or the internal combustion engine and electric drive can be used together to enable the power unit to obtain a more stable output power and have better energy-saving characteristics, avoiding the high fuel consumption of traditional internal combustion engines.

[0020] By using the first coupling 5 and the second coupling 6 together, different drive modes can be achieved. The output shaft of the drive motor 3 is a double-ended outward-extending type, connected to the internal combustion engine 2 and the main pump input end 4 via the first coupling 5 and the second coupling 6, respectively. When pure electric drive is required, the first coupling 5 is disconnected, so the internal combustion engine 2 is not connected to the power unit, and the second coupling 6 is connected, allowing the drive motor 3 to directly drive the main pump input end 4, providing input power to the main pump. When the internal combustion engine 2 needs to be connected to the power unit, the first coupling 5 is connected, and power to the internal combustion engine 2 can be supplied. In this case, it can be selected that the drive motor 3 does not provide power, meaning the internal combustion engine 2 directly drives the main pump through the output shaft of the drive motor 3; or it can be selected that the drive motor 3 provides power, meaning the internal combustion engine 2 and the drive motor 3 together drive the main pump.

[0021] The use of a permanent magnet DC motor allows for flexible adjustment of the output speed according to the needs of the power unit and when working with the internal combustion engine 2, enabling smoother operation and providing power input to the power unit. The multi-plate electromagnetic clutch offers fast disengagement and engagement, automatic control, and the ability to switch between disengagement and engagement without stopping the engine or its operation.

[0022] The dual-drive mechanism is externally provided with a cover 8; an air intake chamber 9 is provided on the cover 8 on one side of the internal combustion engine 2; an air intake grille 10 is provided on the top of the air intake chamber 9, and an air intake fan 11 is provided on the side of the internal combustion engine 2; the exhaust pipe 12 and the air intake pipe 13 of the internal combustion engine 2 are both located on the top of the cover 8.

[0023] The air intake grille 10 ensures that the air flowing into the air intake chamber 9 is clean, preventing the harsh external working environment from affecting the internal components. The air intake fan 11 blows the air from the air intake chamber 9 toward the internal combustion engine 2 and the drive motor 3, forcing the internal airflow and ensuring that the internal combustion engine 2, the drive motor 3, and the main pump input end 4 inside the hood 8 operate in a well-ventilated working environment.

[0024] A control unit 14 is provided above the drive motor 3. The control unit 14 is used to control the switching of different drive modes and the control of the working status of the drive motor 3, such as its speed.

[0025] The internal combustion engine 2 is mounted on the vehicle platform 1 via engine feet 15. Engine feet 15 have good stability and shock absorption functions. This mounting method ensures the stable operation of the internal combustion engine 2 and plays a role in suppressing vibration and shaking.

[0026] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A dual-drive mechanism for a hydraulic pump power unit, installed on a vehicle platform (1), characterized in that: It includes an internal combustion engine (2), a drive motor (3) and a main pump input end (4) installed sequentially on the upper platform (1); the drive motor (3) is installed between the internal combustion engine (2) and the main pump input end (4) via a V-shaped support (7); a first coupling (5) is provided between the internal combustion engine (2) and the drive motor (3); a second coupling (6) is provided between the drive motor (3) and the main pump input end (4); the drive motor (3) is a permanent magnet DC motor; the first coupling (5) is a multi-plate electromagnetic clutch.

2. The dual-drive mechanism of a hydraulic pump power unit as described in claim 1, characterized in that: The dual-drive mechanism is provided with an external shroud (8); an intake chamber (9) is provided on the shroud (8) on one side of the internal combustion engine (2); an intake grille (10) is provided on the top of the intake chamber (9), and an intake fan (11) is provided on the side of the internal combustion engine (2); the exhaust pipe (12) and intake pipe (13) of the internal combustion engine (2) are both located on the top of the shroud (8).

3. The dual-drive mechanism of a hydraulic pump power unit as described in claim 2, characterized in that: A control unit (14) is provided above the drive motor (3).

4. The dual-drive mechanism of a hydraulic pump power unit as described in claim 3, characterized in that: The internal combustion engine (2) is mounted on the vehicle platform (1) via a foot (15).

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