Hybrid power arrangement structure and crane

Abstract

The utility model discloses a hybrid power arrangement structure which comprises a first power part and a second power part. The first power part comprises an engine and an engine driving assembly, the engine is provided with a generator, and the generator is connected with a power battery through a motor controller; the second power part comprises a motor and a motor driving assembly, and the motor is connected with a battery through a motor controller. The engine can drive the generator to generate electricity, so that the power battery is charged, the fuel economy of the engine during boarding operation is improved through the electric drive technology, meanwhile, the boarding operation noise is reduced, and the boarding operation comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a hybrid power arrangement structure and a crane. Background Art

[0002] Mobile cranes are usually divided into a lifting operation part and a chassis traveling part. The lifting operation part is usually called the upper part, and the chassis traveling part is usually called the lower part. The two are connected together through a slewing support. In this way, the upper part can rotate 360 ​​degrees. The center of the slewing support is arranged with a central rotating body to facilitate the transmission of energy, signals, etc. for getting on and off.

[0003] Mobile cranes generally use diesel engines as their power source. Two common options are: one is to place only one engine in the chassis as the power source for both the loading and unloading vehicles, known as a single-engine system; the other is to place an engine in both the chassis and the loading vehicle, known as a dual-engine system. In a single-engine system, the chassis engine powers the entire vehicle, driving it through the clutch, gearbox, transfer case, drive shaft, axles, and tires. A power take-off hydraulic pump is also connected to the gearbox, converting mechanical energy into hydraulic energy to drive the loading vehicle. In a dual-engine system, the chassis engine and the loading vehicle engine provide power for the chassis and loading vehicle, respectively. Because the power required for vehicle operation is greater than that required for loading vehicle operation, the chassis engine displacement is generally larger than that of the loading vehicle engine.

[0004] With a single-engine system, the engine needs to run continuously during loading operations, with the majority of this time spent idling, resulting in unnecessary power waste. The larger engine displacement, chosen to balance chassis travel with the load required for loading operations, results in long periods of low-load operation, resulting in poor fuel economy. The power take-off hydraulic pump is located at the transmission power take-off port, which lacks flexibility and poses challenges for the overall layout of certain crane chassis. With a dual-engine system, the installation of the engine and its associated peripheral accessories on the loading platform creates congestion within the loading platform's hangar. The addition of an engine system increases both the overall cost and weight of the vehicle, leading to a corresponding increase in maintenance costs for customers. Summary of the Invention

[0005] Purpose of the utility model: In order to overcome the shortcomings of the background technology, the first purpose of the utility model is to disclose a hybrid power arrangement structure;

[0006] The second purpose is to disclose a crane that adopts the above-mentioned hybrid power arrangement structure; the engine can drive the generator to generate electricity, thereby charging the power battery, and using electric drive technology to improve the fuel economy of the engine during the vehicle operation, while reducing the noise of the vehicle operation and improving the comfort of the vehicle operation.

[0007] Technical solution: The hybrid power arrangement structure disclosed in the utility model includes a first power part and a second power part;

[0008] The first power part includes an engine and an engine drive assembly, the engine is equipped with a generator, and the generator is connected to a power battery through a motor controller;

[0009] The second power part includes an electric motor and a motor drive assembly, and the electric motor is connected to a battery through a motor controller.

[0010] Furthermore, the engine drive assembly includes a gearbox connected to the engine via a clutch and an axle connected to the gearbox via a transmission shaft.

[0011] Furthermore, the gearbox is connected to a transfer case via a transmission shaft, and the transfer case is connected to multiple sets of axles.

[0012] Furthermore, the battery is connected to a battery management controller and connected to an external power supply through the battery management controller, and the motor controllers are all connected to the battery through the battery management controller.

[0013] Furthermore, the motor drive assembly includes a hydraulic pump connected to the motor through a coupling, and the hydraulic pump is connected to the hydraulic valve group and the hydraulic actuator through a hydraulic pipeline.

[0014] A crane adopts the hybrid power arrangement structure.

[0015] Furthermore, the first power part is located on the lower part of the crane, and the second power part is located on the upper part of the crane.

[0016] Beneficial effects: Compared with the existing technology, the advantages of the utility model are: pure electric operation makes the operation of getting on the vehicle quiet, highly economical, and improves the customer experience; the generator can charge the power battery at any time, avoiding the situation where getting on and off the vehicle cannot be performed when the power battery is low or there is no external power supply;

[0017] Compared with the dual-engine system, this solution eliminates the engine system on the vehicle, eliminating the need for engine maintenance on the vehicle. At the same time, it improves the layout space on the vehicle and enhances the crane's repair and maintenance performance. Compared with the single-engine system, since there is no need to arrange a hydraulic pump at the power take-off point behind the gearbox, the overall chassis layout is more flexible, and the problem of high fuel consumption during vehicle operations is completely avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the utility model. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 The hybrid power arrangement shown includes a first power section and a second power section.

[0021] The first power part includes an engine 1 and an engine drive assembly. The engine 1 is equipped with a generator 2, and the generator 2 is connected to a power battery 4 through a motor controller 3; the engine drive assembly includes a gearbox 7 connected to the engine 1 through a clutch 6, and a transfer case 9 connected to the gearbox 7 through a drive shaft 8, and the transfer case 9 is connected to multiple sets of axles 10.

[0022] The battery 4 is connected to a battery management controller 11 , and is connected to an external power source 12 via the battery management controller 11 . The motor controllers 3 are also connected to the battery 4 via the battery management controller 11 .

[0023] The second power part includes an electric motor 5 and a motor drive assembly. The electric motor 5 is connected to a battery 4 through a motor controller 3 .

[0024] The motor drive assembly includes a hydraulic pump 13 connected to the motor 5 via a coupling. The hydraulic pump 13 is connected to a hydraulic valve group 15 and a hydraulic actuator 16 via a hydraulic pipeline 14 .

[0025] The hybrid power arrangement described above is applied to a crane, wherein the first power section is located in the undercarriage of the crane and the second power section is located in the supercarriage of the crane.

[0026] (1) Chassis driving status

[0027] In this operating mode, engine 1 power is transmitted to axle 10 via clutch 6, gearbox 7, drive shaft 8, and transfer case 9, driving the vehicle. Due to the inclusion of a generator, generator 2 can be designed to absorb some of the energy generated by vehicle braking. When battery 4 requires charging, generator 2 can be manually activated while the chassis is in motion to charge power battery 4.

[0028] (2) On-board pure electric / plug-in / extended range operation status

[0029] Pure electric operation: When operating on the vehicle, the battery 4 provides electric energy to the motor 5, and the motor 5 drives the hydraulic pump 13 to rotate through the coupling. The hydraulic pump 13 transmits power to the hydraulic actuator 16 through the hydraulic pipeline 14 and the hydraulic valve group 15.

[0030] Range-extended operation: During vehicle operation, if the battery charge is low, the chassis engine 1 can be started to drive the generator 2 to charge the battery 4. At this time, the chassis engine can operate in the most fuel-efficient operating area of ​​the universal characteristic curve, thereby reducing engine fuel consumption.

[0031] Plug-in operation: When the crane work site is equipped with plug-in conditions, it can be connected to an external charging plug. At this time, the crane uses the power of the external power grid to perform loading operations, thus avoiding fuel consumption and reducing operating costs.

Claims

1. A hybrid power arrangement, characterized in that: including a first power part and a second power part; The first power part comprises an engine (1) and an engine drive assembly, the engine (1) is equipped with a generator (2), and the generator (2) is connected to a power battery (4) via a motor controller (3); The second power part comprises an electric motor (5) and a motor drive assembly, and the electric motor (5) is connected to a battery (4) via a motor controller (3).

2. The hybrid power arrangement according to claim 1, characterized in that: The engine drive assembly comprises a gearbox (7) connected to the engine (1) via a clutch (6) and an axle (10) connected to the gearbox (7) via a transmission shaft (8).

3. The hybrid power arrangement according to claim 2, characterized in that: The gearbox (7) is connected to a transfer case (9) via a transmission shaft (8), and the transfer case (9) is connected to a plurality of vehicle axle sets (10).

4. The hybrid power arrangement according to claim 1, characterized in that: The battery (4) is connected to a battery management controller (11) and is connected to an external power source (12) via the battery management controller (11); the motor controllers (3) are connected to the battery (4) via the battery management controller (11).

5. The hybrid power arrangement according to claim 1, characterized in that: The motor drive assembly comprises a hydraulic pump (13) connected to the motor (5) via a coupling, and the hydraulic pump (13) is connected to a hydraulic valve group (15) and a hydraulic actuator (16) via a hydraulic pipeline (14).

6. A crane, characterized in that: The hybrid power arrangement structure of claim 1 is included.

7. The crane according to claim 6, characterized in that: The first power part is located at the lower part of the crane, and the second power part is located at the upper part of the crane.

Images