Electromagnetic retarding four-motor two-gear mining dump truck gearbox

Abstract

The utility model provides an electromagnetic retarding four-motor two-gear mining dump truck gearbox. The electromagnetic retarding four-motor two-gear mining dump truck gearbox comprises motors, an input tooth set, a connecting tooth set, a transmission tooth set and an output tooth set which are connected in sequence, the multiple motors are converged into the connecting tooth set through the input tooth set and transmitted to the transmission tooth set through the connecting tooth set, the transmission tooth set is provided with two gear shifting mechanisms, and the two gear shifting mechanisms are connected with the output tooth set. The gear shifting mechanism is connected with the output gear set, and the output gear set is provided with an electromagnetic retarder. The electromagnetic retarding four-motor two-gear mining dump truck gearbox solves the problem that an existing product cannot meet the use requirement.

Description

Technical Field

[0001] This utility model relates to the field of drive transmission, specifically to an electromagnetic retarder four-motor two-speed mining dump truck gearbox. Background Technology

[0002] The mining machinery industry is currently accelerating its upgrade towards green and electric technologies. Mining dump trucks, as core equipment in mine transportation, suffer from drawbacks such as high carbon emissions, low energy efficiency, and high maintenance costs with traditional diesel power systems. New energy electrification technology offers a fundamental solution to these problems. However, the extreme heavy loads, frequent starts and stops, and braking on long slopes of mining dump trucks place stringent demands on the power transmission system: it must withstand extremely high torque (peak torque typically reaching tens of thousands of Newton-meters) while ensuring high reliability and energy recovery efficiency. Existing single-speed transmission technology used in civilian electric vehicles is insufficient to meet these requirements. Utility Model Content

[0003] To address the problem that existing products cannot meet usage requirements, this utility model provides an electromagnetic retarder four-motor two-speed mining dump truck gearbox that solves the above-mentioned problems.

[0004] An electromagnetic retarder four-motor two-speed mining dump truck gearbox includes a motor, an input gear group, a connecting gear group, a transmission gear group, and an output gear group connected in sequence. Multiple motors converge into the connecting gear group through the input gear group and are transmitted to the transmission gear group through the connecting gear group. The transmission gear group is provided with two sets of shifting mechanisms and is connected to the output gear group through the shifting mechanisms. The output gear group is provided with an electromagnetic retarder.

[0005] In a preferred embodiment of the electromagnetic retarder four-motor two-speed mining dump truck gearbox provided by this utility model, the input gear set includes multiple input shafts, each connected to the same number of motors. The connecting gear set includes one connecting shaft, and all input shafts mesh with the same connecting shaft. The input gear set includes four input shafts, each connected to one of the four motors. Each input shaft has input teeth, and the connecting shaft has two front connecting teeth, each of which meshes with two input teeth. The input teeth and the front connecting teeth are meshed by two sets of gears with opposite directions of rotation, forming a herringbone tooth layout.

[0006] In a preferred embodiment of the electromagnetic retarder four-motor two-speed mining dump truck gearbox provided by this utility model, the transmission gear set includes two intermediate shafts, one end of which meshes with the connecting shaft, and the other end of which is connected to the output shaft through the shifting mechanism.

[0007] Each of the intermediate shafts is provided with intermediate teeth, and the connecting shaft is also provided with rear connecting teeth, which mesh with the two intermediate teeth.

[0008] In a preferred embodiment of the electromagnetic retarder four-motor two-speed mining dump truck gearbox provided by this utility model, the shifting mechanism includes a shifting spline disposed on the intermediate shaft, a first shifting tooth and a second shifting tooth sleeved on the intermediate shaft, the shifting spline being connected to the first shifting tooth, or the shifting spline being connected to the second shifting tooth.

[0009] In a preferred embodiment of the electromagnetic retarder four-motor two-speed mining dump truck gearbox provided by this utility model, the output gear set includes an output shaft, a first output tooth and a second output tooth disposed on the output shaft, the output shaft is provided with the electromagnetic retarder, and the first output tooth and the second output tooth respectively mesh with the first shift tooth and the second shift tooth.

[0010] Compared with existing technologies, the electromagnetic retarder four-motor two-speed mining dump truck gearbox provided by this utility model has the following advantages:

[0011] 1. The solution provided by this utility model adopts an axial force self-balancing design. Two sets of gears with opposite directions of rotation are used between the input gear and the front connecting gear to form a herringbone tooth layout. The meshing forces of the symmetrical tooth directions cancel each other out, significantly reducing the axial load on the constant mesh bearing. This can reduce the wear of the shaft support bearings, improve the overall life of the transmission system, and avoid the complexity of adding thrust bearings or shaft shoulders required by traditional single-direction gears.

[0012] 2. The solution provided by this utility model adopts a design of four motors in two groups of transmission. The power ratio of the auxiliary motor can be further adjusted to achieve dual optimization of lightweight and reliability.

[0013] 3. The solution provided by this utility model has ultra-high torque density. The four-motor power confluence technology significantly improves the torque carrying capacity of the constant meshing shaft through parallel input, and effectively disperses gear contact stress by combining the dual intermediate shaft split transmission.

[0014] 4. The solution provided by this utility model adopts a multi-motor collaborative control strategy, which provides sufficient power redundancy when a single motor fails, ensuring safe continuous operation under extreme conditions.

[0015] 5. The solution provided by this utility model adopts a dual intermediate shaft two-speed transmission design. The dual intermediate shaft structure in the rear section achieves two-speed ratio switching through a combination of main and auxiliary gearboxes. The dual intermediate shaft synchronizer can reduce shifting impact and improve power continuity. The auxiliary motor can serve as a secondary power source, avoiding the risk of power interruption during mine car lifting and unloading. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the electromagnetic retarder four-motor two-speed mining dump truck gearbox;

[0017] Figure 2 This is a schematic diagram of the input gear and the front connecting gear in the gearbox of an electromagnetic retarder four-motor two-speed mining dump truck.

[0018] The following are the numbered components in the diagram: First motor 11, Second motor 12, Third motor 13, Fourth motor 14, Input gear group 2, Input shaft 21, Input gear 22, Connecting gear group 3, Connecting shaft 31, Front connecting gear 32, Rear connecting gear 33, Transmission gear group 4, Intermediate shaft 41, Intermediate gear 42, Shifting mechanism 5, First shifting gear 51, Second shifting gear 52, Shifting spline 53, Sliding sleeve 54, Output gear group 6, Output shaft 61, First output gear 62, Second output gear 63, Electromagnetic retarder 7. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please also refer to Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of the electromagnetic retarder four-motor two-speed mining dump truck gearbox provided by this utility model. Figure 2 This is a schematic diagram of the input gear and the front connecting gear in the gearbox of an electromagnetic retarder four-motor two-speed mining dump truck.

[0021] The electromagnetic retarder four-motor two-speed mining dump truck gearbox includes a first motor 11, a second motor 12, a third motor 13, a fourth motor 14, an input gear set 2, a connecting gear set 3, a transmission gear set 4, a shifting mechanism 5, an output gear set 6, and an electromagnetic retarder 7.

[0022] The output gear group 2 includes four input shafts 21 and four input teeth 22.

[0023] The input shafts 21 are equipped with bearings at both ends. The four input shafts 21 are arranged in two parallel groups and are connected to the first motor 11, the second motor 12, the third motor 13, and the fourth motor 14, respectively. The four input teeth 22 are respectively located on the four input shafts 21.

[0024] The connecting gear assembly 3 includes a connecting shaft 31, and two front connecting teeth 32 and one rear connecting tooth 33 sequentially disposed on the connecting shaft 31. The connecting shaft 31 is relatively long and adopts a two-section structure, with each section having two bearing supports.

[0025] The first motor 11 and the second motor 12 serve as main motors, while the third motor 13 and the fourth motor 14 serve as auxiliary motors. The two input teeth 22 connecting the first motor 11 and the second motor 12 mesh with the first front connecting tooth 32, and the two input teeth 22 connecting the third motor 13 and the fourth motor 14 mesh with the second front connecting tooth 32.

[0026] The input tooth and the front connecting tooth 32 are connected by two sets of gears with opposite directions of rotation, forming a herringbone tooth layout, roughly as follows: Figure 2 As shown.

[0027] The transmission gear set 4 includes two intermediate shafts 41 and two intermediate teeth 42.

[0028] The two intermediate shafts 41 are parallel to each other and are equipped with bearings at both ends. Two intermediate teeth 42 are respectively provided on the two intermediate shafts 41 and both mesh with the rear connecting teeth 33.

[0029] Each of the two intermediate shafts 41 is provided with a shift mechanism 5. The shift mechanism 5 includes a shift spline 53 provided on the intermediate shaft 41, a first shift tooth 51 and a second shift tooth 52 sleeved on the intermediate shaft 41, and a sliding sleeve 54 for shifting.

[0030] The first shift tooth 51 and the second shift tooth 52 are located on both sides of the shift spline 53, and each has a spline on a similar side. They are connected by a sliding sleeve 54 to realize the output of power from the first shift tooth 51 or the second shift tooth 52.

[0031] The output gear assembly 6 includes an output shaft 61, a first output tooth 62, and a second output tooth 63. The output shaft 61 is equipped with the first output tooth 62, the second output tooth 63, and an electromagnetic retarder 7. The first output tooth 62 simultaneously meshes with the first shift teeth 51 of both shift mechanisms 5, while the second output tooth 63 meshes with the second shift teeth 52 of both shift mechanisms 5. The first shift teeth 51 have a smaller diameter and output high torque, while the second shift teeth 52 have a larger diameter and output high speed.

[0032] The power from the first motor 11 and the second motor 12 is combined to the connecting shaft 31 via the first front connecting gear 32, and the power from the third motor 13 and the fourth motor 14 is combined to the connecting shaft 31 via the second front connecting gear 32. The connecting shaft 31 transmits power to the output shaft 61 via a double intermediate shaft splitting transmission and two sets of shifting mechanisms 5.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electromagnetic retarder four-motor two-gear mine dump truck gearbox, characterized in that: The motor, the input gear set, the connecting gear set, the transmission gear set and the output gear set are connected in sequence, a plurality of the motors are merged into the connecting gear set through the input gear set, and are transmitted to the transmission gear set through the connecting gear set, the transmission gear set is provided with two sets of gear shifting mechanisms, and is connected with the output gear set through the gear shifting mechanisms, and the output gear set is provided with an electromagnetic brake.

2. The electromagnetic retarder four-motor two-gear mine dump truck gearbox according to claim 1, characterized in that: The input gear set includes a plurality of input shafts connected with the same number of motors respectively, and the connecting gear set includes a connecting shaft with which all the input shafts are engaged.

3. The electromagnetic retarder four-motor two-gear mine dump truck gearbox according to claim 2, characterized in that: The input gear set includes four input shafts connected with four motors, each of the input shafts is provided with input gears, and the connecting shaft is provided with two front connecting gears, each of the front connecting gears is engaged with two input gears.

4. The electromagnetic retarder four-motor two-gear mine dump truck transmission according to claim 3, characterized in that: The input gears and the front connecting gears are engaged by two groups of gears with opposite rotation directions to form a herringbone tooth layout.

5. The electromagnetic retarder four-motor two-gear mine dump truck transmission according to any one of claims 2 to 4, characterized in that: The transmission gear set includes two intermediate shafts engaged with the connecting shaft at one end and connected with the output shaft through the gear shifting mechanisms at the other end.

6. The electromagnetic retarder four-motor two-gear mine dump truck transmission according to claim 4, characterized in that: Each of the intermediate shafts is provided with intermediate gears, and the connecting shaft is further provided with rear connecting gears engaged with two intermediate gears.

7. The electromagnetic retarder four-motor two-gear mine dump truck transmission according to claim 6, characterized in that: The gear shifting mechanism includes a gear shifting spline provided on the intermediate shaft, a first gear shifting gear and a second gear shifting gear sleeved on the intermediate shaft, the gear shifting spline is connected with the first gear shifting gear, or the gear shifting spline is connected with the second gear shifting gear.

8. The electromagnetic retarder four-motor two-gear mine dump truck transmission according to claim 7, characterized in that: The output gear set includes an output shaft, a first output gear and a second output gear provided on the output shaft, the output shaft is provided with the electromagnetic brake, and the first output gear and the second output gear are engaged with the first gear shifting gear and the second gear shifting gear respectively.

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