Pure electric mine truck power assembly
By designing a gearbox with three intermediate shafts and a reverse motor, the problem of mismatch between the gear position and working conditions of mining trucks is solved, low-frequency gear shifting and efficient energy recovery are achieved, and the safety and user experience of mining trucks are improved.
Patent Information
- Application Number
- CN202423166765.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In the existing technology, the gear position does not match the actual working conditions in the mining area, resulting in a high frequency of gear shifting, which cannot meet the market demand for fewer gears and electric shifting.
The gearbox adopts a three-intermediate shaft structure, is designed with three forward gears, and reverse gear is achieved by reversing the motor. Combined with the sliding sleeve shift power switching, the motor has a common shell and double stator structure, with a reserved retarder interface, and is compatible with pneumatic and electric shift actuators. It is suitable for 90-150 ton mining trucks.
It reduces the frequency of gear shifting, improves user experience, realizes high-power drive and energy recovery, improves safety and vehicle safety, adapts to various working conditions in mining areas, and reduces gear shift failures caused by air source blockage.
Smart Images
Figure CN223459842U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of transmission gear shifting, and particularly relates to a pure electric mine truck power assembly. BACKGROUND
[0002] The CO2 emissions generated by mining operations and power consumption of the mining industry account for 2-3% of global carbon emissions, and under the global carbon neutralization background, carbon reduction in the mining industry is an important governance direction for global mining enterprises. Among the many heavy equipment in the mining industry, mine trucks are the most widely used and have the largest carbon emissions. Promoting the green and low-carbon transformation of mine trucks is an inevitable path to achieve carbon emission reduction in the mining industry.
[0003] In the field of pure electric mine trucks, the power system mostly adopts a central integrated power system with many gears, and the applicable vehicle type is 70-120 tons, while in the actual working conditions in the mining area, only 2-3 gears are used. In order to meet the market demand for fewer gears and electric gear shifting, and to complement the products without power interruption with more gears, suitable products are provided for different customers, and the development of a three-gear pure electric transmission for 90-150 ton mine trucks has great significance. SUMMARY
[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a pure electric mine truck power assembly to solve the technical problem of high gear shifting frequency due to mismatch between gear position and working condition in the actual working conditions in the mining area in the prior art.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A pure electric mine truck power assembly, comprising a transmission, wherein the transmission is a three-intermediate shaft structure transmission.
[0007] The three-intermediate shaft structure transmission comprises three forward gears, namely first gear, second gear and third gear.
[0008] The speed ratio of the first gear is 4-5.
[0009] The speed ratio of the second gear is 2.8-3.5.
[0010] The speed ratio of the third gear is 1.
[0011] The utility model also has the following technical features:
[0012] The pure electric mine truck power assembly comprises a plurality of motors, and the output shaft of the motor is connected to the input shaft of the transmission.
[0013] The number of motors is two, and the two motors are of a common shell double-stator structure.
[0014] The reverse gear of the gearbox is realized by motor reverse rotation.
[0015] The gear shifting power switching of the gearbox is realized by sliding sleeve.
[0016] The retarder interface is reserved on the gearbox to carry the retarder.
[0017] Compared with the prior art, the utility model has the following beneficial technical effects:
[0018] (I) the gearbox of the utility model has three forward gears, one gear corresponds to one working condition, one gear is used for vehicle escape or a few large slope working conditions, two gears are used for full load climbing working conditions, and three gears are used for flat road working conditions, so that the gear shifting frequency is reduced, gear shifting anxiety caused by the harsh environment of the mining area is solved, and user experience is improved.
[0019] (II) the pure electric mine truck power assembly of the utility model can realize high-power driving and energy recovery function, realizes long time climbing and reduces energy consumption.
[0020] (III) the retarder interface reserved on the gearbox of the utility model is used to carry the retarder, auxiliary braking can be realized, safety is improved, and the labor intensity of the driver is reduced.
[0021] (IV) the electric gear shifting actuator of the utility model is compatible with the pneumatic gear shifting structure and the electric gear shifting mechanism, a compressor does not need to be additionally installed for the vehicle without gas source, gear shifting failure caused by gas source blockage can be avoided for some mining areas with much dust, and the safety of the whole vehicle is improved. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a structural schematic view of the mine truck power assembly.
[0023] The meanings of various reference numerals in the drawing are as follows: 1 is a gearbox, 2 is a motor, 3 is a retarder, 4 is an electric gear shifting actuator, 5 is a gearbox controller, and 6 is a rear power take-off.
[0024] The specific content of the utility model is further explained and described in detail in combination with the embodiments. DETAILED DESCRIPTION
[0025] It should be noted that all the devices and components in the utility model, if not specially stated, all adopt the devices and components known in the prior art.
[0026] According to the above technical scheme, the specific embodiments of the utility model are given below, and it should be noted that the utility model is not limited to the following specific embodiments, and any equivalent transformation based on the technical scheme of the application falls within the protection scope of the utility model.
[0027] Embodiment:
[0028] The embodiment provides a pure electric mine truck power assembly, which comprises a gearbox 1. Figure 1 As shown in the figure, the gearbox 1 is a gearbox 1 with a three-intermediate-shaft structure. The gearbox with the three-intermediate-shaft structure comprises three forward gears, namely a first gear, a second gear and a third gear. The speed ratio of the first gear is 4-5, the speed ratio of the second gear is 2.8-3.5, and the speed ratio of the third gear is 1.
[0029] As shown in the figure, Figure 1 The pure electric mine truck power assembly comprises a plurality of motors 2, and output shafts of the motors 2 are connected with input shafts of the gearbox 1.
[0030] As shown in the figure, Figure 1 The gearbox 1 is provided with a retainer interface for mounting a retarder 3.
[0031] In the embodiment, the reverse gear of the gearbox 1 is realized by reversing the motor 2.
[0032] In the embodiment, the gear shifting power switching of the gearbox 1 is realized by a sliding sleeve.
[0033] In the embodiment, preferably, the number of the motors 2 is two, the two motors 2 are of a common shell double-stator structure, the rated power of the motor 2 is 660 KW, the peak power is 920 KW, and the maximum output torque of the motor is 5600 Nm.
[0034] In the embodiment, further, the gearbox 1 is independently provided with an electric gear shifting actuator 4 and a gearbox controller 5. The electric gear shifting actuator is a commonly used electric gear shifting actuator in the field, and the electric gear shifting actuator 4 is compatible with both a pneumatic gear shifting structure and an electric gear shifting mechanism. The gearbox controller 5 is a commonly used gearbox controller in the field.
[0035] In the embodiment, further, the gearbox 1 can drive a rear power take-off 6, and the maximum output torque of the rear power take-off 6 is 700 Nm.
[0036] In the embodiment, the gearbox 1 adopts a three-intermediate-shaft structure, the three-intermediate-shaft structure includes three forward gears of first gear, second gear and third gear, and the three forward gears correspond to three working conditions respectively. The utility model is used for rigid mine truck, the full load and empty load weight ratio of the whole vehicle is about 3:1, the speed ratio is designed according to the full load and empty load ratio of the whole vehicle, therefore, the speed ratio ratio of the second gear and the third gear of the gearbox is about 3. The first gear speed ratio is 4-5, the maximum output torque is 22000-28000Nm, the maximum climbing degree of the whole vehicle 150t transient full load is greater than 30%, the highest vehicle speed can reach about 8km / h, which is used for vehicle escape or a few large slope working conditions; the second gear speed ratio is 2.8-3.5, the maximum climbing degree of the whole vehicle 150t steady full load is about 10%, the highest vehicle speed can reach about 18km / h, which is used for full load climbing, and can basically realize all ramp working conditions of the mine area; the third gear speed ratio is 1, the highest vehicle speed of the whole vehicle 150t can reach about 65km / h, which is used for full load flat road working condition or empty load high speed transportation.
Claims
1. An electrically pure mine truck powertrain comprising a gearbox (1), characterized in that, The gearbox (1) is a gearbox (1) with three intermediate shaft structures; The gearbox with three intermediate shaft structures comprises three forward gears, namely first gear, second gear and third gear; The speed ratio of the first gear is 4-5; The speed ratio of the second gear is 2.8-3.5; The speed ratio of the third gear is 1.
2. The pure electric mining truck powertrain of claim 1, wherein, The gearbox (1) comprises a plurality of motors (2), and the output shafts of the motors (2) are connected with the input shaft of the gearbox (1).
3. The pure electric mining truck powertrain of claim 2, wherein, The number of the motors (2) is two, and the two motors (2) are of a common shell double-stator structure.
4. The pure electric mining truck powertrain of claim 2, wherein, The reverse gear of the gearbox (1) is realized by reversing the motor (2).
5. The pure electric mining truck powertrain of claim 1, wherein, The power switching of the gear shifting of the gearbox (1) is realized by a sliding sleeve.
6. The pure electric mining truck powertrain of claim 1, wherein, The gearbox (1) is provided with a retainer interface for a retarder (3).