A gear box

Abstract

The utility model belongs to mechanical drive technical field discloses a gear box for solving the problem that traditional gear box is poor in lubrication and heat dissipation under high speed working condition, bearing is easy to fail and installation adaptability is insufficient. The gear box includes the box, is equipped with bearing mounting position in the box, is integrated with lubricating adaptation subassembly and positioning structure on the box, lubricating adaptation subassembly includes oil storage cavity, multidirectional oil supply passage, oil injection structure and oil discharge structure, the oil storage cavity is set up in the box, oil injection structure and oil discharge structure are linked with oil storage cavity respectively, multidirectional oil supply passage extends along the box cavity wall outside bearing mounting position, and links oil storage cavity with bearing mounting position, positioning structure is used for fixed mounting the box.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a gearbox. Background Technology

[0002] In the field of mechanical transmission, gearboxes, as the core component for power transmission, are widely used in various industrial equipment. Existing gearboxes mostly use grease to lubricate bearings. This method is simple in structure, low in cost, and suitable for low- and medium-speed operation, but it has significant drawbacks under high-speed conditions. Because grease is a semi-solid paste with high internal frictional resistance, the violent agitation of the bearing rollers, cage, and raceways during high-speed operation generates a large amount of viscous frictional heat. Furthermore, its poor thermal conductivity makes heat difficult to dissipate, leading to a significant temperature rise in the bearings. This accelerates grease aging and oil film rupture, causing bearing wear and even premature failure, severely restricting the development of gearboxes towards higher speeds and greater power densities.

[0003] Furthermore, traditional gearboxes also have limitations in installation and adaptability. Existing gearboxes have fixed oil passage layouts, limited installation methods, and restricted shaft assembly directions, making them difficult to adapt to the diverse installation requirements of different equipment, such as horizontal and vertical mounting. Customization is often required, increasing operating costs. Simultaneously, traditional lubrication structures lack convenient oil replenishment and replacement mechanisms. Maintenance requires disassembling bearings to replace grease, resulting in complex operations, long downtime, and further impacting equipment operating efficiency.

[0004] Therefore, there is an urgent need for a new type of gearbox that is suitable for high-speed operating conditions, flexible in installation, and convenient in maintenance. Utility Model Content

[0005] The purpose of this utility model is to provide a gearbox that solves the problems of poor lubrication and heat dissipation, easy bearing failure, and insufficient installation adaptability of traditional gearboxes under high-speed operating conditions.

[0006] To achieve the above objectives, this utility model provides a gearbox, including a housing, a bearing mounting position provided inside the housing, and a lubrication adapter component and a positioning structure integrated on the housing; The lubrication adapter assembly includes an oil storage cavity, a multi-directional oil supply channel, an oil injection structure, and an oil discharge structure. The oil storage cavity is located inside the housing. The oil injection structure and the oil discharge structure are respectively connected to the oil storage cavity. The multi-directional oil supply channel extends along the housing cavity wall outside the bearing mounting position and connects the oil storage cavity with the bearing mounting position. The positioning structure is used to fix the housing in place.

[0007] Furthermore, in the gearbox, the multi-directional oil supply channel includes a first oil passage and a second oil passage. The first oil passage extends along the upper or lower side of the gearbox cavity wall of the bearing mounting position, and the second oil passage extends along the left or right side of the gearbox cavity wall of the bearing mounting position. Both the first oil passage and the second oil passage connect the oil storage cavity with the bearing mounting position.

[0008] Furthermore, in the gearbox, the oil filling structure is an oil filling hole, which is opened on the surface of the gearbox and communicates with the oil storage cavity; the oil draining structure is an oil draining hole, which is opened on the surface of the gearbox and communicates with the oil storage cavity; the oil filling hole and the oil draining hole are respectively located in different areas of the gearbox.

[0009] Furthermore, in the gearbox, at least two sets of bearing mounting positions are provided, and the axes of two adjacent sets of bearing mounting positions are arranged parallel to each other inside the gearbox.

[0010] Furthermore, in the gearbox, at least two oil storage cavities are provided, and they are respectively located in the area between each group of bearing mounting positions, with the arrangement direction of the oil storage cavities perpendicular to the axial direction of the bearing mounting positions.

[0011] Furthermore, in the gearbox, the positioning structure includes a bottom plate mounting threaded hole and a back cover mounting threaded hole. The bottom plate mounting threaded hole is located at the bottom of the gearbox, and the back cover mounting threaded hole is located at the back end cover of the gearbox. Both the bottom plate mounting threaded hole and the back cover mounting threaded hole can be threadedly connected to an external frame.

[0012] Furthermore, in the gearbox, an oil level monitoring structure is provided on the surface of the gearbox body. The oil level monitoring structure is a monitoring mounting hole, which is connected to the oil storage cavity and is equipped with an oil level mirror for direct observation of the oil level status of the oil storage cavity.

[0013] Furthermore, in the gearbox, in the first oil passage and the second oil passage, one end of the bearing mounting position in a certain corresponding position is provided with a first opening, and the inner wall contour of the first opening fits with the outer peripheral contour of the corresponding bearing mounting position.

[0014] Furthermore, the gearbox also includes a drive shaft, a driven shaft, and a bearing assembly installed inside the gearbox; the bearing assembly is assembled at the bearing mounting position, and the oil outlet end of the multi-directional oil supply channel faces the contact surface between the bearing assembly and the drive shaft or the driven shaft to achieve directional lubrication.

[0015] Furthermore, in the gearbox, the side wall of the gearbox body is provided with a shaft mounting hole, and the drive shaft and the driven shaft pass through the shaft mounting hole, and their extension direction is adapted to the installation direction of the positioning structure.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: This invention integrates the lubrication adapter component and positioning structure onto the housing. Utilizing the synergistic effect of multi-directional oil supply channels, an oil reservoir, an oil injection structure, and an oil discharge structure, it achieves precise and continuous lubrication of the bearings. This solves the problems of excessive temperature rise and lubrication failure of existing greases under high-speed conditions, significantly reducing bearing wear and extending gearbox lifespan and transmission efficiency. Furthermore, the multi-directional assembly of the positioning structure with the shaft allows for convenient lubrication replenishment and monitoring without disassembling the equipment, thereby improving equipment adaptability and maintenance convenience. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the gearbox housing in one embodiment of the present invention; Figure 2 This is an end view of the gearbox housing from direction A in one embodiment of this utility model; Figure 3 This is a cross-sectional view of the gearbox housing AA in one embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of the oil supply channel and oil circuit routing inside the gearbox housing in one embodiment of this utility model; Figure 5 This is a cross-sectional schematic diagram of the oil storage cavity and multi-directional oil supply path inside the gearbox housing in one embodiment of the present invention; Figure 6 This is a schematic diagram of the assembly layout of the components inside the gearbox in one embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the gearbox bearing mounting position and the first opening in one embodiment of the present invention; Figure 8 This is a detailed view of the gearbox bearing mounting position and the first opening oil passage guide in one embodiment of this utility model; Figure 9 This is a perspective view of the mounting hole layout on the surface of the box when a vertical installation method is adopted in one embodiment of this utility model; Figure 10 This is a perspective view of the mounting hole layout on the surface of the housing when a horizontal installation method is adopted in one embodiment of this utility model; Figure 11 This is a schematic diagram of the multi-position installation layout of the gearbox in one embodiment of this utility model.

[0018] The components include: 1. Housing; 11. Oil storage chamber; 12. Multi-directional oil supply channel; 121. First oil passage; 122. Second oil passage; 13. Oil injection hole; 14. Oil drain hole; 15. Bottom plate mounting threaded hole; 16. Back cover mounting threaded hole; 17. Monitoring mounting hole; 2. Bearing mounting position; 21. First opening; 3. Drive shaft; 4. Driven shaft; 5. Bearing assembly. Detailed Implementation

[0019] The following is a more detailed description of a gearbox according to the present invention, with reference to the accompanying drawings, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0020] For clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not detailed in detail, as they would confuse the present invention with unnecessary detail. It should be understood that in the development of any actual embodiment, numerous implementation details must be made to achieve the developer's specific goals, such as changes from one embodiment to another according to limitations related to the system or business. Furthermore, it should be understood that such development work may be complex and time-consuming, but is merely routine work for those skilled in the art.

[0021] Based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combination of different implementation methods without creating technical contradictions. Such variations should all be considered to fall within the protection scope of this utility model.

[0022] The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0023] like Figure 1-11 As shown in the figure, this embodiment proposes a gearbox that is suitable for high-speed transmission equipment such as motors, fans, and high-speed pumps. It can solve the lubrication problems and installation adaptation requirements of traditional gearboxes under high-speed operating conditions.

[0024] The gearbox in this embodiment includes a housing 1, which is integrally cast from a high-strength alloy material. Figure 1 , Figure 4 and Figure 6As shown, the housing 1 has assembly paths for two shafts, with two sets of bearing mounting positions 2 arranged vertically. Each set includes two bearing mounting positions 2, corresponding to the two ends of the upper and lower shafts, respectively. That is, both ends of each shaft are assembled into the corresponding bearing mounting position 2 via a set of bearing assemblies 5. The inner wall of each bearing mounting position 2 is precision machined, and its inner diameter matches the outer diameter of the bearing assembly 5, enabling a close fit between the bearing assembly 5 and the bearing mounting position 2 and preventing radial displacement of the shaft during operation.

[0025] Furthermore, the housing 1 integrates a lubrication adapter component and a positioning structure that work together, all of which are integrally formed with the housing 1. This reduces assembly errors and improves the overall structural compactness.

[0026] In this embodiment, the lubrication adapter component includes an oil storage cavity 11, a multi-directional oil supply channel 12, an oil injection structure, and an oil discharge structure. The oil storage cavity 11 is located inside the housing 1. The oil injection structure and the oil discharge structure are respectively connected to the oil storage cavity 11. The multi-directional oil supply channel 12 extends along the cavity wall of the housing 1 outside the bearing mounting position 2 and connects the oil storage cavity 11 with the bearing mounting position 2.

[0027] Specifically, the oil storage cavity 11 is located in the hollow area inside the housing 1, such as... Figure 3 As shown, in this embodiment, there are two oil storage chambers 11, which are respectively located in the area between each set of bearing mounting positions 2. The arrangement direction of the oil storage chambers 11 is perpendicular to the axial direction of the bearing mounting positions 2. Its volume has been precisely calculated to fully meet the continuous oil supply requirements of the gearbox under high-speed operating conditions, so that the lubricating oil is stored sufficiently and will not shake excessively due to the vibration of the gearbox 1.

[0028] like Figure 1-2 As shown, the multi-directional oil supply channel 12 in this embodiment includes two first oil channels 121 and two second oil channels 122. These two types of oil channels are determined based on the current installation posture of the housing 1 and will change accordingly as the actual installation method of the housing 1 is adjusted.

[0029] Specifically, two first oil passages 121 are located on the upper or lower edge sidewalls of the two bearing mounting positions 2, extending along the upper or lower sidewalls of the housing 1. Two second oil passages 122 are located on the left or right sidewalls of the two bearing mounting positions 2, extending along the left or right sidewalls of the housing 1. One end of each of these four oil passages connects to the corresponding area of ​​the oil reservoir 11, while the other end extends directly to the outer periphery of the corresponding bearing mounting position 2. The specific flow path of the lubricating oil is as follows: Figure 4 and Figure 5 As shown by the red arrow, the oil passage between the oil storage chamber 11 and the bearing mounting position 2 is connected to ensure the directional delivery of lubricating oil.

[0030] In this embodiment, combining 7 and Figure 8 As shown, a first opening 21 is provided at the end of a portion of the oil passage corresponding to the bearing mounting position 2. The lubricating oil in the oil reservoir 11 first flows into the main channel of the multi-directional oil supply channel 12, and then is branched through the first oil passage 121 or the second oil passage 122. Finally, it is precisely guided through the first opening 21 at the end to the mating surface between the bearing assembly 5 and the shaft. The specific flow path of the lubricating oil is as follows: Figure 7 and Figure 8 As shown by the red arrow, directional lubrication of the bearing raceway and rollers is achieved.

[0031] It should be noted that, as Figure 9-11 As shown, the positions of the oil filling hole 13, the oil drain hole 14, and the oil level monitoring structure can be flexibly adjusted according to different gearbox mounting structures to adapt to the operational needs of different scenarios. In this embodiment, the oil filling structure is the oil filling hole 13, and the oil drain structure is the oil drain hole 14. Both are opened on the surface of the housing 1 and communicate with the oil storage cavity 11, and are always located in different areas of the housing 1 to avoid oil circuit interference. The oil level monitoring structure is the monitoring mounting hole 17, which communicates with the oil storage cavity 11 and is equipped with an oil level mirror for visually observing the oil level status of the oil storage cavity 11.

[0032] Specifically, in Figure 9 and some Figure 11 In the corresponding vertical installation method, the two shafts inside the gearbox are arranged vertically. In this case, the oil filling hole 13 is located at the top of the gearbox 1, and the oil drain hole 14 is located in the corresponding area at the bottom of the gearbox 1. These two holes, located in different areas at the top and bottom of the gearbox 1, form an upper filling and lower drain structure. At this time, lubricating oil can naturally fill the oil reservoir 11 by gravity, and waste oil and impurities in the oil reservoir 11 can be completely discharged during oil draining. Simultaneously, the monitoring mounting hole 17 is located on the side of the front of the gearbox 1. After installing the oil level gauge, the oil level in the oil reservoir 11 can be directly observed from the side, making operation convenient.

[0033] When the gearbox switches to Figure 10 and some Figure 11 In the corresponding horizontal installation configuration, the two shafts inside housing 1 are arranged horizontally. The positions of the oil filling hole 13 and the oil drain hole 14 are adjusted synchronously: the oil filling hole 13 is moved to the top area of ​​housing 1 in its current position, while the oil drain hole 14 is located at the bottom area of ​​housing 1 in its current position, maintaining the logic of high-level oil filling and low-level oil draining to avoid oil circuit blockage or incomplete oil draining. The oil level monitoring structure is also adjusted to the side area of ​​housing 1 that is currently visible, allowing operators to clearly observe the oil level status from the side through the oil level mirror in this installation scenario and replenish lubricating oil in a timely manner.

[0034] In addition, such as Figure 9and Figure 10 As shown, the positioning structure includes a bottom plate mounting threaded hole 15 and a back cover mounting threaded hole 16. The bottom plate mounting threaded hole 15 is located at the bottom of the housing 1, and the back cover mounting threaded hole 16 is located at the back end cover of the housing 1. Both types of threaded holes can achieve a stable threaded connection with the external frame, meeting the fixing requirements under different installation scenarios.

[0035] Furthermore, such as Figure 1 and Figure 6 As shown, the gearbox housing 1 houses a drive shaft 3, a driven shaft 4, and a bearing assembly 5. Shaft mounting holes are provided on the side wall of housing 1, through which the drive shaft 3 and driven shaft 4 pass. At this time, the bearing assembly 5 is tightly fitted at the pre-set bearing mounting position 2. The oil outlet of the multi-directional oil supply channel 12 is precisely oriented towards the contact surface between the bearing assembly 5 and the drive shaft 3 or driven shaft 4, achieving directional lubrication, avoiding oil waste, and improving lubrication efficiency. Figure 11 As shown, the extension directions of the drive shaft 3 and driven shaft 4 can be flexibly set according to actual installation requirements. They can be arranged either vertically along the housing 1 or horizontally, and their extension directions are compatible with the installation direction of the positioning structure. For example, when using... Figure 9 When fixed in a vertical mounting structure, the shaft can extend vertically to connect with vertical transmission components. Figure 10 When the horizontal mounting structure is fixed, the shaft can extend in the left and right directions to connect with horizontal transmission equipment, fully demonstrating the multi-scenario adaptability advantage of the gearbox.

[0036] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A gear box, characterized in that, The enclosure includes a housing, which has a bearing mounting position, and the housing integrates a lubrication adapter component and a positioning structure. The lubrication adapter assembly includes an oil storage cavity, a multi-directional oil supply channel, an oil injection structure, and an oil discharge structure. The oil storage cavity is located inside the housing. The oil injection structure and the oil discharge structure are respectively connected to the oil storage cavity. The multi-directional oil supply channel extends along the housing cavity wall outside the bearing mounting position and connects the oil storage cavity with the bearing mounting position. The positioning structure is used to fix the housing in place.

2. The gear case of claim 1, wherein, The multi-directional oil supply channel includes a first oil passage and a second oil passage. The first oil passage extends along the upper or lower side of the housing cavity wall of the bearing mounting position, and the second oil passage extends along the left or right side of the housing cavity wall of the bearing mounting position. Both the first oil passage and the second oil passage connect the oil storage cavity with the bearing mounting position.

3. The gear case of claim 2, wherein, The oil injection structure is an oil injection hole, which is opened on the surface of the tank and communicates with the oil storage cavity; the oil discharge structure is an oil discharge hole, which is opened on the surface of the tank and communicates with the oil storage cavity; the oil injection hole and the oil discharge hole are respectively located in different areas of the tank.

4. The gear case of claim 1, wherein, The bearing mounting positions are provided in at least two sets, and the axes of the two adjacent sets of bearing mounting positions are arranged parallel to each other inside the housing.

5. The gear case of claim 4, wherein, The oil storage cavity is provided in at least two parts, and is respectively located in the area between each group of bearing mounting positions. The arrangement direction of the oil storage cavity is perpendicular to the axial direction of the bearing mounting position.

6. The gear case of claim 1, wherein, The positioning structure includes a bottom plate mounting threaded hole and a back cover mounting threaded hole. The bottom plate mounting threaded hole is located at the bottom of the housing, and the back cover mounting threaded hole is located at the back end cover of the housing. Both the bottom plate mounting threaded hole and the back cover mounting threaded hole can be threadedly connected to an external frame.

7. The gear case of claim 3, wherein, The surface of the housing is also provided with an oil level monitoring structure, which is a monitoring mounting hole. The monitoring mounting hole is connected to the oil storage cavity and is equipped with an oil level mirror for direct observation of the oil level status of the oil storage cavity.

8. The gear case of claim 2, wherein, In the first oil passage and the second oil passage, one end of the bearing mounting position in a certain corresponding position is provided with a first opening, and the inner wall contour of the first opening fits the outer peripheral contour of the corresponding bearing mounting position.

9. The gear box according to any one of claims 1-8, characterized in that, It also includes a drive shaft, a driven shaft, and a bearing assembly installed inside the housing; the bearing assembly is assembled at the bearing mounting position, and the oil outlet end of the multi-directional oil supply channel faces the contact surface between the bearing assembly and the drive shaft or the driven shaft to achieve directional lubrication.

10. The gear box of claim 9, wherein, The side wall of the housing is provided with shaft mounting holes, and the drive shaft and the driven shaft pass through the shaft mounting holes, with their extension direction matching the installation direction of the positioning structure.

Images