Cooling structure and belt conveyor drive system

Abstract

The utility model discloses a cooling structure and belt conveyor drive system, cooling structure includes cooling oil cavity, and the cooling oil cavity carries out heat exchange with the component of cooling through wall surface, and the cooling oil inlet and cooling oil export are set up on the cooling oil cavity, and the cooling oil enters the cooling oil cavity from the cooling oil inlet, and after heat exchange, the cooling oil export flows out and carries out cooling and temperature reduction again and then returns to the cooling oil cavity through the cooling oil inlet, the turbulence mechanism is arranged along the cooling oil flow direction in the cooling oil cavity, and the heat exchange of cooling oil is strengthened, the turbulence mechanism includes a plurality of turbulence fin that sets up in the cooling oil cavity, and the utility model sets up the turbulence mechanism in the cooling oil cavity, utilizes the fin of array arrangement, strengthens the heat exchange between cooling oil and driving motor, utilizes the high pressure air of high -speed flow to form the strong shearing and turbulence effect to the lubricating oil in the cavity, strengthens the heat exchange, thereby effectively inhibits the temperature rise of driving motor stator.

Description

Technical Field

[0001] This utility model relates to the technical field of material conveying equipment in mechanical engineering, specifically to a cooling structure and a belt conveyor drive system. Background Technology

[0002] Current belt conveyor drive systems mainly fall into two categories. The traditional structure uses a combination of an asynchronous (or variable frequency) motor, a coupling, and a parallel shaft reducer. The other type is a newer method that uses a low-speed permanent magnet motor for direct drive. Cooling of the drive equipment is generally achieved by circulating cooling oil or by installing a water-cooling structure inside the equipment for heat exchange. However, relying directly on the natural flow of cooling oil for heat exchange results in low heat exchange efficiency and cannot meet the cooling requirements of the equipment during long-term operation. Utility Model Content

[0003] Technical objective: To address the shortcomings of existing cooling structures, this utility model discloses a cooling structure and a belt conveyor drive system that can improve heat exchange and cooling efficiency.

[0004] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A cooling structure includes a cooling oil chamber, which exchanges heat with the component to be cooled through its wall. The cooling oil chamber has a cooling oil inlet and a cooling oil outlet. Cooling oil enters the cooling oil chamber through the cooling oil inlet, flows out through the cooling oil outlet after heat exchange, and then flows back into the cooling oil chamber through the cooling oil inlet. A turbulence mechanism is provided in the cooling oil chamber along the flow direction of the cooling oil to enhance the heat exchange of the cooling oil. The turbulence mechanism includes turbulence fins disposed in the cooling oil chamber, which turbulent the incoming cooling oil.

[0005] Preferably, the cooling oil cavity of this invention has several high-pressure air inlets and corresponding high-pressure air outlets. The flow direction of the high-pressure air is consistent with the array direction of the turbulence fins. The high-pressure air shears and turbulents the cooling oil, thereby enhancing the convective heat transfer between the cooling oil and the heat exchange components.

[0006] This utility model discloses a belt conveyor drive system using the above-mentioned cooling structure, including a drive motor and a gearbox. The drive motor is connected to the input end of the gearbox. A cooling oil chamber is formed by the drive motor wall, the gearbox wall, and the gearbox end flange, and the drive motor is cooled by cooling oil.

[0007] Preferably, the gearbox of this utility model is equipped with a planetary gear reduction structure, which includes several planetary gear sets; the ring gear of the planetary gear set is fixed to the reduction phase, and along the power transmission direction, the planet carrier of the previous stage planetary gear set is keyed to the sun gear of the next stage planetary gear set, the sun gear of the first stage planetary gear set is keyed to the drive shaft of the drive motor, and the planet carrier of the last stage planetary gear set is keyed to the output shaft of the gearbox, so that the output shaft is driven to rotate through the drive motor and the planetary gear reduction structure.

[0008] Preferably, the gearbox of this invention has a lubricating oil inlet and a lubricating oil outlet. The lubricating oil enters the gearbox from the lubricating oil inlet to lubricate and cool the planetary gear reduction structure.

[0009] Preferably, the drive motor and gearbox of this utility model are equipped with a circulating water cooling structure that is separated from the internal space. The circulating water cooling structure is formed by cooling water pipes or an annular cavity, and the internal circulating cooling water is used for heat exchange and cooling.

[0010] Beneficial effects: The cooling structure and belt conveyor drive system disclosed in this utility model have the following beneficial effects: 1. This utility model sets up a turbulence mechanism in the cooling oil cavity and uses arrayed fins to enhance the heat exchange between the cooling oil and the drive motor, thereby effectively suppressing the temperature rise of the drive motor stator.

[0011] 2. This utility model sets a high-pressure air inlet and a high-pressure air outlet on the cooling oil cavity. The high-speed flow of high-pressure air forms a strong shearing and turbulence effect on the lubricating oil in the cavity, effectively destroying the thermal boundary layer of the lubricating oil and inducing large-scale eddies and turbulent mixing, thereby significantly enhancing the convective heat transfer efficiency and greatly improving the overall heat dissipation performance of the system. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a structural diagram of the drive system of this utility model; Figure 2 This is a cross-sectional view of the cooling oil chamber of this utility model along the direction of high-pressure air flow; Among them, 1-cooling oil chamber, 2-cooling oil inlet, 3-cooling oil outlet, 4-turbulence fins, 5-high pressure air inlet, 6-high pressure air outlet, 7-drive motor, 8-gearbox, 9-drive motor wall, 10-gearbox wall, 11-box flange, 12-output shaft, 13-lubricating oil inlet, 14-lubricating oil outlet. Detailed Implementation

[0014] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0015] like Figure 1 and Figure 2 As shown, this utility model discloses a cooling structure, including a cooling oil chamber 1. The cooling oil chamber 1 exchanges heat with the component to be cooled through its wall. The cooling oil chamber 1 has a cooling oil inlet 2 and a cooling oil outlet 3. Cooling oil enters the cooling oil chamber 1 through the cooling oil inlet 2, flows out through the cooling oil outlet 3 after heat exchange, and then flows back into the cooling oil chamber 1 through the cooling oil inlet 2. A turbulence mechanism is arranged in the cooling oil chamber 1 along the cooling oil flow direction to enhance the heat exchange of the cooling oil. The turbulence mechanism includes several turbulence fins 4 arranged in the cooling oil chamber 1, parallel to the cooling oil flow direction, which turbulent the incoming cooling oil. The turbulence fins are thin metal fins, and their main extension direction is parallel to the flow path of the cooling oil. By radially arranging them in an array on the wall of the drive motor, a large-area, low-resistance parallel flow channel system is constructed. The large-area fin array significantly enhances fluid turbulence, ensuring the uniformity of the temperature field distribution and maximizing heat exchange efficiency.

[0016] To further improve the cooling and heat exchange effect, the cooling oil chamber 1 of this invention has several high-pressure air inlets 5 and corresponding high-pressure air outlets 6. The flow direction of the high-pressure air is consistent with the array direction of the turbulence fins 4. The high-pressure air shears and turbulents the cooling oil, enhancing the convective heat transfer between the cooling oil and the components to be heat-exchanged. Figure 2 As shown, each high-pressure air inlet 5 corresponds to a high-pressure air outlet 6, keeping the flow direction of high-pressure air in the cooling oil cavity consistent with the array arrangement direction of the turbulence fins. The high-pressure air is injected into the cavity at high speed, forming a strong shearing and turbulence effect on the lubricating oil in the cavity, effectively destroying the thermal boundary layer of the lubricating oil, inducing large-scale eddies and turbulent mixing, and improving the heat exchange effect.

[0017] like Figure 1As shown, this utility model discloses a belt conveyor drive system using the aforementioned cooling structure, including a drive motor 7 and a gearbox 8. The drive motor 7 is connected to the input end of the gearbox 8. A cooling oil chamber 1 is formed by the drive motor wall 9, the gearbox wall 10, and the housing flange 11 at the end of the gearbox 8. The drive motor 7 is cooled by cooling oil. Directly utilizing the structural walls of the drive system to form the cooling oil chamber can improve the compactness of the structure. At the same time, the drive motor 7 is connected to the gearbox 8 without the need for a coupling, making installation convenient and ensuring installation alignment accuracy. Simultaneously, the cooling oil can directly exchange heat with the corresponding wall for cooling. In the embodiment of this utility model, the drive motor 7 is a permanent magnet motor, and the turbulence fins 4 are preferably designed on the drive motor wall 9 to cool the stator of the permanent magnet motor.

[0018] The gearbox 8 of this invention is equipped with a planetary gear reduction structure, which includes several planetary gear sets. The ring gear of each planetary gear set is fixed to the reduction phase. Along the power transmission direction, the planet carrier of the previous stage planetary gear set is keyed to the sun gear of the next stage planetary gear set. The sun gear of the first stage planetary gear set is keyed to the drive shaft of the drive motor 7. The planet carrier of the last stage planetary gear set is keyed to the output shaft 12 of the gearbox 8. The output shaft is driven to rotate by the drive motor 7 and the planetary gear reduction structure. In addition to the planetary gear reduction structure provided by this invention, those skilled in the art can freely choose other types of planetary reduction structures according to transmission requirements, as long as the input end is connected to the drive motor 7 and power transmission can be carried out smoothly.

[0019] The gearbox 8 of this utility model has a lubricating oil inlet 13 and a lubricating oil outlet 14. The lubricating oil enters the gearbox 8 through the lubricating oil inlet 13 to lubricate and cool the planetary gear reduction structure. The drive motor 7 and the gearbox 8 are both equipped with a circulating water cooling structure that is separated from the internal space. The circulating water cooling structure is formed by cooling water pipes or an annular cavity, and the internal circulating cooling water is used for heat exchange and cooling in order to cool other components of the drive system.

[0020] In use, to simplify the system structure, the cooling oil in the cooling oil chamber 1 is of the same type as the lubricating oil in the gearbox and uses the same external cooling system. The external cooling system is used to cool the oil after heat exchange, and can be directly implemented using the heat exchange structure in the prior art, which will not be described in detail here. The lubricating oil cooled by the external cooling system enters the cooling oil chamber 1 and the gearbox 8 through the corresponding cooling oil inlet 2 and lubricating oil inlet 13, respectively, to exchange heat with the corresponding components and cool them. After the heat exchange and heating up, the lubricating oil is led out from the corresponding outlet for cooling again and then recycled.

[0021] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cooling structure, characterized in that, The cooling oil chamber (1) is provided with a cooling oil inlet (2) and a cooling oil outlet (3) on the cooling oil chamber (1). Cooling oil enters the cooling oil chamber (1) from the cooling oil inlet (2), and after heat exchange, it flows out from the cooling oil outlet (3) for cooling and cooling down, and then flows back into the cooling oil chamber (1) through the cooling oil inlet (2). A turbulence mechanism is provided in the cooling oil chamber (1) along the cooling oil flow direction to enhance the heat exchange of the cooling oil. The turbulence mechanism includes a turbulence fin (4) provided in the cooling oil chamber (1). The turbulence fin (4) is provided parallel to the cooling oil flow direction and turbulences the incoming cooling oil through the turbulence fin (4).

2. The cooling structure according to claim 1, characterized in that, The cooling oil chamber (1) has several high-pressure air inlets (5) and high-pressure air outlets (6) corresponding to the high-pressure air inlets (5). The flow direction of the high-pressure air is consistent with the array direction of the turbulence fins (4). The high-pressure air shears and turbulents the cooling oil, thereby enhancing the convective heat transfer between the cooling oil and the heat exchange components.

3. A belt conveyor drive system, using the cooling structure described in any one of claims 1-2, characterized in that, It includes a drive motor (7) and a gearbox (8). The drive motor (7) is connected to the input end of the gearbox (8). The drive motor wall (9), the gearbox wall (10) and the housing flange (11) at the end of the gearbox (8) together form a cooling oil chamber (1) to cool the drive motor (7) through the cooling oil.

4. A belt conveyor drive system according to claim 3, characterized in that, The gearbox (8) is equipped with a planetary gear reduction structure, which includes several planetary gear sets. The gear ring of the planetary gear set is fixed to the reduction phase. Along the power transmission direction, the planet carrier of the previous stage planetary gear set is keyed to the sun gear of the next stage planetary gear set. The sun gear of the first stage planetary gear set is keyed to the drive shaft of the drive motor (7). The planet carrier of the last stage planetary gear set is keyed to the output shaft (12) of the gearbox (8). The output shaft is driven to rotate by the drive motor (7) and the planetary gear reduction structure.

5. A belt conveyor drive system according to claim 4, characterized in that, The gearbox (8) is provided with a lubricating oil inlet (13) and a lubricating oil outlet (14). The lubricating oil enters the gearbox (8) from the lubricating oil inlet (13) to lubricate and cool the planetary gear reduction structure.

6. A belt conveyor drive system according to claim 3, characterized in that, The drive motor (7) and the gearbox (8) are both equipped with a circulating water cooling structure that is separated from the internal space. The circulating water cooling structure is formed by cooling water pipes or an open annular cavity, and the internal circulating cooling water is used for heat exchange and cooling.

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