Driving system

Abstract

The utility model provides a driving system which is characterized in that the system comprises a driving assembly, the output end of the driving assembly is connected with the input end of a combiner box, the output end of the combiner box is connected with the input end of a transfer case, the output end of the transfer case is connected with a hydraulic pump assembly, and the hydraulic pump assembly is connected with a hydraulic pump. The output ends of the hydraulic pump assemblies are connected with the corresponding executing mechanisms respectively. Zero carbon emission, high efficiency and environmental protection are realized, and national green development requirements are met; the operation cost is low, and the cost can be saved by about 40% compared with the fuel oil cost; the follow-up problem caused by the fact that more high-power engines are purchased from abroad in the prior art is solved; after-sales maintenance is convenient, efficiency is high, and cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-power electric upper drive systems for excavators, and in particular relates to a drive system. Background Art

[0002] At present, mining excavators generally use diesel engines as the power source for upper load taking. However, with the large-scale mining engineering machinery, higher requirements are put forward for the power of the power system. In addition, the global carbon emission problem is serious, and the call for green mines is getting louder and louder. The current traditional fuel drive solution has many defects, as follows:

[0003] 1) Large excavators have high fuel consumption and large carbon emissions, causing serious environmental pollution;

[0004] 2) High operating costs and expenses due to high fuel consumption;

[0005] 3) There is a lack of high-power engine resources, which are not only costly but also subject to quota restrictions;

[0006] 4) Most high-power engines are purchased from abroad, which also leads to a long engine spare parts cycle and difficult after-sales maintenance;

[0007] Therefore, there is an urgent need to provide a driving system to solve the defects and shortcomings in the above-mentioned prior art. Utility Model Content

[0008] In order to solve the defects and shortcomings in the prior art, the utility model provides a driving system.

[0009] The technical solution provided by the utility model is as follows:

[0010] A drive system, characterized in that: the system includes a drive assembly, the output end of the drive assembly is connected to the input end of a junction box, the output end of the junction box is connected to the input end of a transfer case, the output end of the transfer case is connected to a hydraulic pump assembly, and the output ends of the hydraulic pump assembly are respectively connected to corresponding actuators.

[0011] As a further preferred embodiment of the present utility model, the drive assembly is arranged at a power system installation position between the cab and the counterweight box.

[0012] As a further preferred embodiment of the present utility model, the drive assembly includes a plurality of drive motors, and the plurality of drive motors are all high-speed flat wire motors.

[0013] As a further preferred embodiment of the present invention, a plurality of the drive motors are connected in parallel.

[0014] As a further preferred embodiment of the present invention, a plurality of the drive motors are evenly arranged radially on the outer periphery of the combiner box.

[0015] As a further preferred embodiment of the present invention, the plurality of drive motors are arranged on a circle with the input gear of the combiner box as the center.

[0016] As a further preferred embodiment of the present invention, the combiner box is a reduction box, and the internal gear pair of the combiner box is a reduction gear pair.

[0017] As a further preferred embodiment of the present invention, the output shafts of the multiple motors are fixedly connected with motor input gears, and the interior of the junction box is provided with fixedly connected junction input gears and junction output gears, the motor input gear is located on the outer periphery of the junction input gear and meshes with the outside, and the junction output gear is connected to the input end of the transfer case.

[0018] As a further preferred embodiment of the present utility model, the hydraulic pump assembly at least includes a boom oil pump, an arm oil pump and a bucket oil pump.

[0019] As a further preferred embodiment of the utility model, the actuator at least includes a boom connected to the boom oil pump, a dipper arm connected to the dipper arm oil pump, and a bucket connected to the bucket oil pump.

[0020] Compared with the prior art, the beneficial effects achieved by the utility model include:

[0021] 1) The utility model provides a driving system that achieves zero carbon emissions, is highly efficient and environmentally friendly, and complies with national green development requirements;

[0022] 2) The utility model provides a drive system with low operating cost, which can save about 40% compared with fuel cost;

[0023] 3) The utility model provides a drive system to replace the existing technology in which large-power engines are mostly purchased from abroad, which leads to subsequent problems (such as restrictions on export trade, long spare parts cycle, and difficult after-sales maintenance, etc.);

[0024] 4) The utility model provides a driving system with convenient after-sales maintenance, high efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a logical structure diagram of the drive system provided by the utility model.

[0026] Figure 2 This is a structural front view of the drive assembly and combiner box provided by the utility model.

[0027] Figure 3This is a structural stereogram of the drive assembly and combiner box provided by the utility model.

[0028] Figure 4 This is a schematic diagram of the arrangement of the drive assembly and combiner box provided by the utility model.

[0029] Figure 5 This is a transmission structure diagram of the drive assembly and combiner box provided by the utility model. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] [First embodiment]

[0034] like Figure 1-5 The figure shows a driving system provided by the first embodiment of the utility model. The driving system is applicable to the excavator mentioned in this solution. Those skilled in the art should know that it is also applicable to other excavators and engineering machinery; Figure 1As shown, it includes a drive assembly, the output end of the drive assembly is connected to the input end of the combiner box, the output end of the combiner box is connected to the input end of the transfer case, the output end of the transfer case is connected to the hydraulic pump assembly, and the output ends of the hydraulic pump assembly are respectively connected to corresponding actuators.

[0035] The drive assembly in this embodiment is arranged at the power system installation position between the cab and the counterweight box to replace the upper diesel engine power system in the prior art, and is connected to the hydraulic pump assemblies and actuators of the excavator to provide driving power for the hydraulic pump assemblies and actuators of the excavator.

[0036] The drive assembly in this embodiment may include multiple drive motors to meet different drive requirements, such as Figure 2-3 As shown, three drive motors EM1, EM2 and EM3 are provided, and more drive motors may be provided according to actual drive requirements, for example Figure 1 and Figure 4-5 As shown in , preferably, the multiple drive motors in this embodiment are all high-speed flat wire motors to further improve the drive efficiency and power density of the drive motors, while reducing noise and achieving miniaturization and lightweight layout.

[0037] like Figure 2-4 As shown, the multiple drive motors in this embodiment are connected in parallel, and the multiple drive motors are evenly arranged radially on the outer periphery of the combiner box; as one of the preferred implementations, the multiple drive motors can be arranged on a circle with the input gear G1 of the combiner box as the center, so as to ensure the balance of the power layout structure.

[0038] The combiner box in this embodiment uses a reduction box, and the gear pair inside the combiner box uses a reduction gear pair. The multiple drive motors are connected in parallel through the reduction gear pair and then connected for convergence and coupled output.

[0039] For example, see Figure 5 As shown, the output shafts of multiple motors EM1, EM2 and EM3 are fixedly connected with motor input gears EG1, EG2 and EG3, and a fixedly connected confluence input gear G1 and a confluence output gear G2 are arranged inside the confluence box. The motor input gears are located on the outer periphery of the confluence input gear G1 and mesh with the outside thereof, and the confluence output gear G2 is connected to the input end of the transfer case to output the combined multi-motor driving power to the transfer case.

[0040] like Figure 1As shown, the hydraulic pump assembly in this embodiment at least includes a boom (i.e., large arm) oil pump, a dipper arm (i.e., small arm) oil pump and a bucket oil pump; correspondingly, the actuator at least includes a boom connected to the boom oil pump, a dipper arm connected to the dipper arm oil pump and a bucket connected to the bucket oil pump, thereby increasing the total output power of the system by superimposing the power of multiple high-speed small motors, and then merging through a junction box to increase torque and reduce speed, and finally coupling the output to drive the transfer case, transmitting power to each hydraulic pump of the excavator to drive the corresponding actuator to operate.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A drive system, characterized in that: The system includes a drive assembly, the output end of the drive assembly is connected to the input end of a combiner box, the output end of the combiner box is connected to the input end of a transfer case, the output end of the transfer case is connected to a hydraulic pump assembly, and the output ends of the hydraulic pump assembly are respectively connected to corresponding actuators.

2. A driving system according to claim 1, characterized in that: The drive assembly is arranged at a power system installation position between the cab and the counterweight box.

3. A driving system according to claim 1, characterized in that: The driving assembly includes a plurality of driving motors, and the plurality of driving motors are all high-speed flat wire motors.

4. A driving system according to claim 3, characterized in that: A plurality of the driving motors are connected in parallel.

5. A driving system according to claim 3, characterized in that: The plurality of driving motors are evenly arranged on the outer periphery of the combiner box along the radial direction.

6. A driving system according to claim 5, characterized in that: The plurality of driving motors are arranged on a circle with the input gear of the combiner box as the center.

7. A driving system according to claim 3, characterized in that: The combiner box adopts a reduction box, and the gear pair inside the combiner box adopts a reduction gear pair.

8. A driving system according to claim 7, characterized in that: The output shafts of the multiple motors are fixedly connected with motor input gears, and the inside of the junction box is provided with fixedly connected junction input gears and junction output gears. The motor input gear is located on the outer periphery of the junction input gear and meshes with the outside thereof, and the junction output gear is connected to the input end of the transfer case.

9. A driving system according to claim 1, characterized in that: The hydraulic pump assembly at least includes a boom oil pump, an arm oil pump and a bucket oil pump.

10. A driving system according to claim 9, characterized in that: The actuator at least comprises a boom connected to the boom oil pump, a dipper arm connected to the dipper arm oil pump, and a bucket connected to the bucket oil pump.

Images