Gearbox with high heat dissipation performance

Abstract

The utility model discloses a gear case with high heat dissipation, include: gear case shell, oil injection subassembly, oil return subassembly and oil pump, oil injection subassembly fixed mounting on gear case shell upper end, oil return subassembly fixed mounting on gear case lower extreme, the oil inlet end of oil injection subassembly is communicated with the oil outlet end of oil return subassembly through oil pump. Through oil injection pipe, the cooling and lubrication of the transmission gear are carried out after the atomization of the lubricating oil, the temperature inside the gear case can be effectively reduced, the problems such as the deformation and wear of the components caused by high temperature are reduced, the operation reliability and stability of the gear case in the high-temperature environment of ironmaking are greatly improved, the service life of the gear case is prolonged, the continuous and stable operation of the electric drive device is ensured, the production interruption risk caused by the gear case failure is reduced, thereby the continuity and production efficiency of the steel metallurgical production process are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrical transmission devices, and specifically relates to a gearbox with high heat dissipation performance. Background Technology

[0002] Ironmaking is a crucial step in the entire production process of the iron and steel metallurgy industry, but the environment is extremely harsh. Ironmaking generates a large amount of heat and high concentrations of dust, posing significant challenges to production equipment. Existing electrical drive systems exhibit serious defects when operating in such an environment. Among these, the gearbox, as a key transmission component of the electrical drive system, is most severely affected. Due to the continuous high temperature, heat accumulates inside the gearbox and is difficult to dissipate quickly and effectively, causing the gearbox temperature to easily exceed the normal operating threshold.

[0003] An overheated working environment can gradually reduce the mechanical properties of the internal components of the gearbox, such as the hardness and toughness of the gears, leading to gear deformation and affecting the meshing accuracy and transmission efficiency between gears. Long-term exposure to high temperatures can also damage the gearbox structure, and in severe cases, even paralyze the entire electrical drive system. This will not only frequently interrupt ironmaking production and increase equipment maintenance costs, but also reduce production efficiency, affecting the company's economic benefits and the smooth implementation of production plans. Utility Model Content

[0004] To address some or all of the technical problems existing in the prior art, this utility model provides a gearbox with high heat dissipation performance. The output shaft of the gearbox is rotatably mounted on one side of the gearbox housing via bearings. The gearbox includes: a gearbox housing, an oil injection assembly, an oil return assembly, and an oil pump. The oil injection assembly is fixedly mounted on the upper end of the gearbox housing, and the oil return assembly is fixedly mounted on the lower end of the gearbox housing. The oil inlet of the oil injection assembly is connected to the oil outlet of the oil return assembly via the oil pump.

[0005] Preferably, the fuel injection assembly includes: a first fuel distributor and several sets of matching fuel injection pipes and a first cooling oil pipe. The inlet end of the first fuel distributor is fixedly connected to the outlet end of the fuel pump. The inlet ends of the first cooling oil pipes are all fixedly connected to the outlet ends of the first fuel distributor. The first cooling oil pipes are arranged around the outside of the gearbox housing. The first cooling oil pipes are made of bent copper pipes. The fuel injection pipes extend vertically into the inside of the gearbox housing and are fixedly connected to the upper end of the gearbox housing. The inlet end of the fuel injection pipes is fixedly connected to the outlet end of the first cooling oil pipes. An atomizing nozzle is fixedly installed at the outlet end of the fuel injection pipes.

[0006] Preferably, the oil return assembly includes: a second oil circuit distributor and several sets of matching oil drain pipes and second cooling oil pipes. The oil outlet of the second oil circuit distributor is fixedly connected to the oil inlet of the oil pump. The oil outlets of the second cooling oil pipes are all fixedly connected to the oil inlet of the second oil circuit distributor. The second cooling oil pipes are arranged around the outside of the gearbox housing. The second cooling oil pipes are made of bent copper pipes. The oil drain pipe is fixedly connected to the lower end of the gearbox housing and communicates with the inside of the gearbox housing. The oil outlet of the oil drain pipe is fixedly connected to the oil inlet of the second cooling oil pipe. The lower end of the oil drain pipe is higher than the bottom surface of the inner cavity of the gearbox housing.

[0007] Preferably, a filter cover is fixedly installed at the oil inlet end of the oil drain pipe.

[0008] Preferably, the middle section of the first cooling oil pipe is provided with an arc-shaped bend, the inner ring of which is coaxial with the output shaft and surrounds the outer side of the output shaft.

[0009] Preferably, the output shaft is fixedly connected to an extension shaft via a coupling, and fan blades are fixedly mounted on the extension shaft.

[0010] Preferably, a protective cover is fixedly connected to the gearbox housing via a connecting column. The protective cover is located on the outside of the fan blade, and a circular hole is provided at the center of the protective cover, through which the extension shaft passes.

[0011] The gearbox of this invention with high heat dissipation performance has the following advantages and beneficial effects:

[0012] By atomizing lubricating oil through an oil spray pipe and spraying it onto the transmission gears for cooling and lubrication, the internal temperature of the gearbox can be effectively reduced, minimizing problems such as component deformation and wear caused by high temperatures. This greatly improves the reliability and stability of the gearbox in the high-temperature environment of ironmaking, extends the service life of the gearbox, ensures the continuous and stable operation of the electrical drive device, reduces the risk of production interruption due to gearbox failure, and thus improves the continuity and production efficiency of the iron and steel metallurgical production process. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0014] Figure 1This is a schematic diagram of the structure of the gearbox with high heat dissipation performance according to this utility model;

[0015] Figure 2 This is a partial exploded sectional view of the gearbox with high heat dissipation performance according to this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Gearbox housing; 2. Injection pipe; 3. First cooling oil pipe; 4. Protective cover; 5. Connecting column; 6. Fan blade; 7. Oil pump; 8. Second cooling oil pipe; 9. Drain pipe; 10. First oil circuit distributor; 11. Second oil circuit distributor; 12. Filter cover; 13. Output shaft; 14. Extended shaft; 15. Arc-shaped elbow; 16. Atomizing nozzle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] like Figures 1 to 2 As shown, the gearbox with high heat dissipation performance provided by this utility model has an output shaft 13 rotatably mounted on one side of the gearbox housing 1 via a bearing. It includes: a gearbox housing 1, an oil injection assembly, an oil return assembly, and an oil pump 7. The oil injection assembly is fixedly mounted on the upper end of the gearbox housing 1, and the oil return assembly is fixedly mounted on the lower end of the gearbox housing 1. The oil inlet end of the oil injection assembly is connected to the oil outlet end of the oil return assembly through the oil pump 7.

[0020] Preferably, the fuel injection assembly includes: a first fuel distributor 10 and several sets of matching fuel injection pipes 2 and first cooling oil pipes 3. The inlet end of the first fuel distributor 10 is fixedly connected to the outlet end of the fuel pump 7. The inlet ends of the first cooling oil pipes 3 are all fixedly connected to the outlet ends of the first fuel distributor 10. The first cooling oil pipes 3 are arranged around the outside of the gearbox housing 1. The first cooling oil pipes 3 are made of bent copper pipes. The fuel injection pipes 2 extend vertically into the inside of the gearbox housing 1 and are fixedly connected to the upper end of the gearbox housing 1. The inlet end of the fuel injection pipes 2 is fixedly connected to the outlet end of the first cooling oil pipes 3. An atomizing nozzle 16 is fixedly installed at the outlet end of the fuel injection pipes 2.

[0021] Preferably, the oil return assembly includes: a second oil circuit distributor 11 and several sets of matching drain pipes 9 and second cooling oil pipes 8. The oil outlet of the second oil circuit distributor 11 is fixedly connected to the oil inlet of the oil pump 7. The oil outlets of the second cooling oil pipes 8 are all fixedly connected to the oil inlet of the second oil circuit distributor 11. The second cooling oil pipes 8 are arranged around the outside of the gearbox housing 1. The second cooling oil pipes 8 are made of bent copper pipes. The drain pipes 9 are fixedly connected to the lower end of the gearbox housing 1 and communicate with the inside of the gearbox housing 1. The oil outlet of the drain pipe 9 is fixedly connected to the oil inlet of the second cooling oil pipe 8. The lower end of the drain pipe 9 is higher than the bottom surface of the inner cavity of the gearbox housing 1.

[0022] The lubricating oil is atomized and sprayed onto the transmission gears through the oil spray pipe 2 for cooling and lubrication. This effectively reduces the internal temperature of the gearbox, minimizes component deformation and wear caused by high temperatures, greatly improves the reliability and stability of the gearbox in the high-temperature environment of ironmaking, extends the service life of the gearbox, ensures the continuous and stable operation of the electrical drive device, and reduces the risk of production interruption due to gearbox failure. This improves the continuity and efficiency of the iron and steel metallurgical production process. The oil drain pipe 9 enables the circulation of lubricating oil. The first cooling oil pipe 3 and the second cooling oil pipe 8 form an oil circulation path for the lubricating oil around the gearbox shell 1, which simultaneously cools the lubricating oil during circulation, thus achieving continuous cooling of the gearbox.

[0023] Preferably, a filter cover 12 is fixedly installed at the oil inlet end of the oil drain pipe 9.

[0024] By setting the lower end of the oil drain pipe 9 to be higher than the bottom surface of the inner cavity of the gearbox housing 1, this design can effectively prevent sediment from entering the oil inlet of the oil drain pipe 9. At the same time, a filter cover 12 is fixedly installed at the oil inlet of the oil drain pipe 9 to further ensure the purity of the discharged lubricating oil and prevent impurities from clogging the oil drain pipe 9.

[0025] Preferably, the middle section of the first cooling oil pipe 3 is provided with an arc-shaped bend 15, the inner ring of which is coaxial with the output shaft 13 and surrounds the outer side of the output shaft 13.

[0026] Preferably, the output shaft 13 is fixedly connected to an extension shaft 14 via a coupling, and a fan blade 6 is fixedly installed on the extension shaft 14.

[0027] Preferably, a protective cover 4 is fixedly connected to the gearbox housing 1 via a connecting post 5. The protective cover 4 is located on the outside of the fan blade 6, and a circular hole is provided at the center of the protective cover 4, through which the extension shaft 14 passes.

[0028] By fixing the fan blade 6 and protective cover 4 to the extended shaft 14, the fan blade 6 can promote the flow of surrounding air to assist in heat dissipation when the gearbox output shaft 13 rotates. The protective cover 4 can prevent dust and other impurities from affecting the rotation and heat dissipation function of the fan blade 6. At the same time, the inner ring of the arc-shaped bend 15 of the first cooling oil pipe 3 is coaxially set with the outer ring of the gearbox output shaft 13, which can make reasonable use of space layout and promote the heat dissipation of lubricating oil by means of the rotation of the fan blade 6. It effectively reduces the corrosion of the gearbox output shaft 13 and related components by high temperature and dust, improves the corrosion resistance of the output shaft 13, and further improves the heat dissipation efficiency of the entire electric drive device through the synergistic effect of multiple heat dissipation methods. This allows the device to better adapt to the harsh conditions in the ironmaking environment, reduces equipment maintenance costs, and improves the overall durability and economy of the equipment.

[0029] A circular hole is provided at the center of the protective cover 4 so that the protective cover 4 does not come into contact with the extended shaft 14. This ensures the normal operation of each component and achieves effective protection.

[0030] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gearbox with high heat dissipation performance, wherein the output shaft (13) of the gearbox is rotatably mounted on one side of the gearbox housing (1) via bearings, characterized in that, It includes: a gearbox housing (1), an oil injection assembly, an oil return assembly, and an oil pump (7). The oil injection assembly is fixedly installed on the upper end of the gearbox housing (1), and the oil return assembly is fixedly installed on the lower end of the gearbox housing (1). The oil inlet of the oil injection assembly is connected to the oil outlet of the oil return assembly through the oil pump (7).

2. The gearbox with high heat dissipation performance according to claim 1, characterized in that, The oil injection assembly includes: a first oil circuit distributor (10) and several sets of matching oil injection pipes (2) and a first cooling oil pipe (3). The oil inlet end of the first oil circuit distributor (10) is fixedly connected to the oil outlet end of the oil pump (7). The oil inlet end of the first cooling oil pipe (3) is fixedly connected to the oil outlet end of the first oil circuit distributor (10). The first cooling oil pipe (3) is arranged around the outside of the gearbox housing (1). The first cooling oil pipe (3) is made of bent copper pipe. The oil injection pipe (2) extends vertically into the inside of the gearbox housing (1) and is fixedly connected to the upper end of the gearbox housing (1). The oil inlet end of the oil injection pipe (2) is fixedly connected to the oil outlet end of the first cooling oil pipe (3). An atomizing nozzle (16) is fixedly installed at the oil outlet end of the oil injection pipe (2).

3. The gearbox with high heat dissipation performance according to claim 1, characterized in that, The oil return assembly includes a second oil circuit distributor (11) and several sets of matching oil drain pipes (9) and second cooling oil pipes (8). The oil outlet of the second oil circuit distributor (11) is fixedly connected to the oil inlet of the oil pump (7). The oil outlet of the second cooling oil pipe (8) is fixedly connected to the oil inlet of the second oil circuit distributor (11). The second cooling oil pipe (8) is arranged around the outside of the gearbox housing (1). The second cooling oil pipe (8) is made of bent copper pipe. The oil drain pipe (9) is fixedly connected to the lower end of the gearbox housing (1) and communicates with the inside of the gearbox housing (1). The oil outlet of the oil drain pipe (9) is fixedly connected to the oil inlet of the second cooling oil pipe (8). The lower end of the oil drain pipe (9) is higher than the bottom surface of the inner cavity of the gearbox housing (1).

4. The gearbox with high heat dissipation performance according to claim 3, characterized in that, A filter cover (12) is fixedly installed at the oil inlet end of the oil drain pipe (9).

5. The gearbox with high heat dissipation performance according to claim 2, characterized in that, The first heat dissipation oil pipe (3) has an arc-shaped elbow (15) in the middle section. The inner ring of the arc-shaped elbow (15) is coaxial with the output shaft (13) and surrounds the outside of the output shaft (13).

6. The gearbox with high heat dissipation performance according to claim 1, characterized in that, The output shaft (13) is fixedly connected to an extension shaft (14) via a coupling, and a fan blade (6) is fixedly installed on the extension shaft (14).

7. The gearbox with high heat dissipation performance according to claim 6, characterized in that, A protective cover (4) is fixedly connected to the gearbox housing (1) via a connecting column (5). The protective cover (4) is located on the outside of the fan blade (6). A circular hole is provided at the center of the protective cover (4), and the extended shaft (14) passes through the circular hole.

Images