Cooling device for electric wheel reducer of mining truck

Abstract

This utility model provides a heat dissipation device for a mining truck electric wheel reducer. The device includes a reducer base for supporting the reducer motor and an oil tank for containing lubricating oil. A groove is provided on the inner wall of the reducer base, and a heat-conducting component is inserted into the outer wall of the oil tank. It also includes a water channel assembly laid within the groove and connected to the heat-conducting component. This utility model solves the problem of poor heat dissipation in current mining truck electric wheel reducers.

Description

Technical Field

[0001] This utility model relates to the field of wheel reducers, specifically to a heat dissipation device for an electric wheel reducer for mining trucks. Background Technology

[0002] As a type of mining machinery, electric wheel reducers for mining trucks often operate in high-temperature, dry environments. As wheel-side reducers, they not only provide the torque for vehicle forward movement but also bear the weight of the vehicle and cargo, resulting in heavy loads and harsh working conditions. Because the reducer is placed inside the wheel hub, almost the entire reducer and motor are enclosed by the wheel or hub. The reducer often uses a cast iron housing, leading to poor heat dissipation. Furthermore, the internal lubricating oil lacks cooling mechanisms, making it prone to overheating. In particular, the reducer's main bearing is located in an independent, sealed cavity, lubricated with grease. Surrounded by the motor, base, and hub, with no ventilation path, and bearing the weight of the entire vehicle and cargo, the bearing experiences significant load and heat generation. Under continuous high-power or high-load operation, insufficient heat dissipation in the main bearing may occur, leading to bearing failure or even reducer damage. To address the aforementioned issues, a patent with publication number CN114382873A provides a lubricating oil filtration and cooling device for the wheel-side reducer of an electric mining wheel. This device uses a method of directly pumping the lubricating oil from the reducer's oil tank for heat dissipation. To ensure the oil maintains its normal lubrication function while circulating and cooling, a series of auxiliary structures for pressure reduction, sealing, and filtration are required, making the entire system complex, prone to damage, and posing significant operational risks. Utility Model Content

[0003] To address the problem of poor heat dissipation in the electric wheel reducer of mining trucks, this utility model provides a heat dissipation device for the electric wheel reducer of mining trucks that solves the above-mentioned problem.

[0004] A cooling device for a mining truck electric wheel reducer includes a reducer base for supporting the reducer motor and an oil tank for containing lubricating oil. A groove is provided on the inner wall of the reducer base, and a heat-conducting component is provided on the outer wall of the oil tank. The device also includes a water channel assembly laid in the groove and connected to the heat-conducting component.

[0005] In a preferred embodiment of the cooling device for the electric wheel reducer of the mining truck provided by this utility model, the inner wall of the reducer base is provided with one or more annular first grooves and one or more straight second grooves parallel to the axial direction of the reducer base.

[0006] In a preferred embodiment of the heat dissipation device for the electric wheel reducer of the mining truck provided by this utility model, the heat-conducting component includes a heat exchange plate and a sealing plate. The heat exchange plate is provided with a third groove. The protruding surface of the heat exchange plate is inserted into the oil tank, and its edge is sealed to the outer wall of the oil tank. The concave surface is provided with the sealing plate, and the edges of the two are also sealed to each other.

[0007] In a preferred embodiment of the cooling device for the electric wheel reducer of a mining truck provided by this utility model, the water circuit assembly is disposed in the first groove and the second groove, and communicates with the space in the third groove. The water circuit assembly includes heat exchange strips, pipes, and a water pump. One or more heat exchange strips are disposed in the first groove, and the pipes are disposed in the second groove. The pipes connect adjacent heat exchange strips, or connect the heat exchange strips to the water pump. The pipes also connect the space in the third groove to the water pump.

[0008] In a preferred embodiment of the cooling device for the electric wheel reducer of the mining truck provided by this utility model, the inner wall of the reducer base is provided with three second grooves, and the water circuit assembly includes three heat exchange strips, which are respectively disposed in the three sections of the first grooves cut off by the second grooves. In two of the second grooves, the pipes are connected to adjacent heat exchange strips, and in the other second groove, the pipes are connected to the heat exchange strips and the water pump.

[0009] Compared with existing technologies, the heat dissipation device for the electric wheel reducer of mining trucks provided by this utility model has the following beneficial effects:

[0010] 1. The solution provided by this utility model includes heat exchange strips and other mechanisms to effectively cool down areas such as the main bearing of the reducer where heat generation is high and heat dissipation is difficult. Heat-conducting components and other mechanisms are also included to effectively cool the lubricating oil. This solution achieves active cooling and temperature control of the reducer, ensuring that all parts of the reducer operate at suitable temperatures, preventing overheating that could lead to reducer failure, and improving the stability and service life of the reducer.

[0011] 2. The solution provided by this utility model uses separate cooling water to cool the lubricating oil in the oil tank, which does not affect the normal circulation of the oil and the system has good stability.

[0012] 3. The solution provided by this utility model can change the number of heat exchange strips as needed, and can eliminate the original air-cooled fan and other devices, thus having better applicability.

[0013] 4. In the solution provided by this utility model, hot water can also be introduced. In extreme weather conditions where the grease in the main bearing solidifies, the grease can be liquefied, thus preventing damage to the bearing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the heat dissipation device for the electric wheel reducer of a mining truck;

[0015] Figure 2 This is an exploded structural diagram of the reducer base location;

[0016] Figure 3 This is an exploded structural diagram of the heat-conducting component.

[0017] The following are labeled in the diagram: reducer base 1, first groove 11, second groove 12, oil tank 2, oil changing chamber 21, heat exchange strip 31, pipeline 32, water pump 33, heat conduction component 34, heat exchange plate 341, sealing plate 342, third groove 343. Detailed Implementation

[0018] 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.

[0019] Please also refer to Figures 1 to 3 These are, respectively, a structural schematic diagram of the cooling device for the electric wheel reducer of the mining truck provided by this utility model, and an exploded structural schematic diagram of the reducer base position and the exploded structural schematic diagram of the heat-conducting component in the cooling device for the electric wheel reducer of the mining truck.

[0020] The cooling device for the electric wheel reducer of the mining truck is located between the reducer base 1 and the oil tank 2, and also includes a heat exchange belt 31, a pipeline 32, a water pump 33, and a heat-conducting component 34. To clearly illustrate the improvements of this utility model, irrelevant parts of the wheel reducer have been removed from the accompanying drawings.

[0021] The reducer base 1 is used to support the reducer motor, so a first groove 11 and a second groove 12 are provided on the mating surface of the two, that is, the inner wall of the reducer base 1.

[0022] The first groove 11 is an annular groove used to house the heat exchange strip 31. In this embodiment, only one ring of the first groove 11 is provided, but in practice, up to three rings of the first groove 11 can be provided. The second groove 12 is a straight groove parallel to the axial direction of the reducer base 1, which cuts the entire first groove 11 into three sections at equal intervals. The second groove 12 is used to arrange the pipeline 32.

[0023] Since the first groove 11 is cut into three sections, the heat exchange strip 31 also adopts a structure of three sections of arc-shaped strip spliced ​​together. Adjacent heat exchange strips 31 in the same circle are connected by pipes 32 that cross the second groove 12. The beginning and end of a circle of heat exchange strips 31 are located on both sides of the same second groove 12, and are respectively connected to pipes 32 laid along the second groove 12. The pipes 32 extend outward from the reducer base 1, i.e., towards the oil tank 2.

[0024] The heat exchange strip 31 is an aluminum arc-shaped strip with a hollow interior. Its inner and outer sides abut against the reducer motor and the first groove 11, respectively. Each end has a connecting edge near the sides for mounting bolts to install the heat exchange strip 31 into the first groove 11. Each end has a connector near the middle that connects to the hollow interior area for connecting to the pipeline 32.

[0025] The oil tank 2 is used to hold lubricating oil. To facilitate the replacement of the lubricating oil, a protruding oil changing chamber 21 is provided on its outer side, with an oil filling port and an oil drain port. For ease of installation, the heat-conducting component 34 is arranged on the outer wall of the oil changing chamber 21.

[0026] The heat-conducting component 34 includes a heat exchange plate 341 and a sealing plate 342. The heat exchange plate 341 is made of cast aluminum, with a square flat plate around the edge and mounting holes. The central area has a serpentine third groove 343, which also gives its back a serpentine raised structure. The sealing plate 342 is a simple square flat plate, installed on the front of the heat exchange plate 341, and seals the third groove 343.

[0027] A connector is provided at the beginning and end of the third groove 343 on the sealing plate 342, respectively, for connecting with the pipe 32 so that the pipe 32 is connected to the third groove 343.

[0028] The raised portion in the middle of the back of the heat exchange plate 341 is inserted into the operating space of the oil tank 2, with its edge aligned with the edge of the operating space. By setting bolts, the sealing plate 342, the heat exchange plate 341, and the edge of the operating space are connected simultaneously to achieve the fixed installation of the heat conduction component 34.

[0029] The water pump 33 is installed on the outer wall of the oil tank 2. During implementation, other more suitable installation locations can be selected based on actual conditions. The inlet and outlet ends of the water pump 33 are connected to the pipeline 32.

[0030] Specifically, the water pump 33 outlet end is connected to the pipe 32 and extends to the second groove 12, connects to the three heat exchange strips 31, returns to the second groove 12 and extends to the sealing plate 342, connects to the first end of the third groove 343, and finally returns to the water pump 33 inlet end from the tail end of the third groove 343.

[0031] Since the pipe 32 itself performs the heat dissipation function, the length of the pipe 32 can be appropriately increased when necessary to increase the heat dissipation area and improve the heat dissipation efficiency.

[0032] Furthermore, in extreme low-temperature climates, the grease inside the main bearing may solidify. Hot water can be introduced into pipe 32 to liquefy the grease and prevent bearing damage.

[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. A cooling device for a mine truck electric wheel reducer, comprising a reducer base for bearing a reducer motor and an oil tank for containing lubricating oil, characterized in that: The reducer housing has a groove on its inner wall and a heat-conducting component inserted therein on the outer wall of the oil tank. It also includes a water channel assembly, which is laid in the groove and connected to the heat-conducting component.

2. The heat dissipation device for the electric wheel reducer of mining trucks according to claim 1, characterized in that: The inner wall of the reducer base is provided with one or more annular first grooves and one or more straight second grooves parallel to the axial direction of the reducer base.

3. The heat dissipation device for the electric wheel reducer of the mining truck according to claim 2, characterized in that: The heat-conducting component includes a heat exchange plate and a sealing plate. The heat exchange plate is provided with a third groove. The protruding surface of the heat exchange plate is inserted into the oil tank, and its edge is sealed to the outer wall of the oil tank. The recessed surface is provided with the sealing plate, and the edges of the two are also sealed to each other.

4. The heat dissipation device for the electric wheel reducer of mining trucks according to claim 3, characterized in that: The water channel assembly is disposed in the first groove and the second groove, and communicates with the space in the third groove.

5. The heat dissipation device for the electric wheel reducer of a mining truck according to claim 4, characterized in that: The water circuit assembly includes heat exchange strips, pipes, and a water pump. One or more heat exchange strips are disposed in the first groove, and the pipes are disposed in the second groove. The pipes connect adjacent heat exchange strips or connect the heat exchange strips to the water pump.

6. The heat dissipation device for the electric wheel reducer of a mining truck according to claim 5, characterized in that: The inner wall of the reducer base is provided with three second grooves. The water circuit assembly includes three heat exchange strips, which are respectively disposed in the three sections of the first grooves that are cut off by the second grooves. In two of the second grooves, the pipes connect adjacent heat exchange strips. In the other second groove, the pipes connect the heat exchange strips and the water pump.

7. The heat dissipation device for the electric wheel reducer of a mining truck according to claim 5 or 6, characterized in that: The pipeline also connects the space inside the third groove to the water pump.

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