Spray lubricating device, automatic control method thereof and gearbox

Abstract

This application relates to a spray lubrication device and its automatic control method, and a gearbox. The spray lubrication device includes: a first oil tank; a spray mechanism including a first drive assembly, a first oil supply pipe, and a nozzle for spraying lubricating oil, the first oil supply pipe connecting the first oil tank and the nozzle, the first drive assembly being configured to drive the nozzle to oscillate around a first axis; and an oil scraping mechanism including an oil scraping shaft and a first scraper connected to the oil scraping shaft, the oil scraping shaft being drively connected to the first drive assembly, and the first scraper being able to rotate around a second axis under the action of the first drive assembly. This application, by setting an oscillating nozzle, improves the problem of inaccurate and incomplete lubricating oil coverage caused by the size of the gearbox and the limited range of splash lubrication, greatly avoiding wear of gearbox components during transmission and increasing the service life of the gearbox; by setting an oil scraping mechanism, the lubricating oil adhering inside the housing is scraped to the bottom and recycled, improving the lubricating oil utilization rate.

Description

Technical Field

[0001] This application relates to the field of lubrication technology, and in particular to spray lubrication devices and their automatic control methods, and gearboxes. Background Technology

[0002] The transmission is an essential component for the normal operation of a vehicle. When the vehicle's driving resistance changes, the transmission can change the torque and speed of the drive wheels to regulate the speed between the engine and the wheels. In related technologies, transmissions mainly use splash lubrication for lubrication and cooling. However, due to limitations in transmission size and the range of splash lubrication, the lubrication coverage and accuracy are low, and the utilization rate of lubricating oil splashed onto the inner wall of the transmission is poor. Summary of the Invention

[0003] Therefore, it is necessary to provide a spray lubrication device and its automatic control method that provides high lubricant utilization efficiency and comprehensive and accurate lubricant spraying, as well as a gearbox, to address the above problems.

[0004] On one hand, a spray lubrication device for a gearbox is provided, the gearbox including a housing, the spray lubrication device comprising:

[0005] A first oil tank is disposed inside the housing, and the first oil tank stores lubricating oil;

[0006] A spraying mechanism, connected to the first oil tank, includes a first drive assembly, a first oil supply pipe, and a nozzle for spraying lubricating oil. The first oil supply pipe connects the first oil tank and the nozzle. The first drive assembly is configured to drive the nozzle to oscillate about a first axis.

[0007] An oil scraping mechanism is connected to the spraying mechanism. The oil scraping mechanism includes an oil scraping shaft and a first scraper connected to the oil scraping shaft. The oil scraping shaft is driven to the first drive assembly. The first scraper can rotate around a second axis under the action of the first drive assembly.

[0008] In one embodiment, the first driving component includes:

[0009] The prime mover has an output shaft capable of rotating about the second axis;

[0010] A first transmission member is drively connected to the output shaft, and the first transmission member is configured to rotate about the second axis under the drive of the output shaft.

[0011] The second transmission component is connected to the first transmission component and the nozzle. The second transmission component rotates around the first axis under the drive of the first transmission component, so as to drive the nozzle to swing around the first axis; the first axis and the second axis are perpendicular to each other.

[0012] In one embodiment, the oil scraping mechanism further includes a second drive component and a second oil scraping plate connected to the first scraper, the second drive component being configured to drive the second scraper to reciprocate relative to the first scraper along the second axis.

[0013] In one embodiment, the second driving component includes:

[0014] The impeller is configured to rotate about a third axis under the drive of externally input lubricating oil; the third axis, the first axis, and the second axis are perpendicular to each other.

[0015] The third transmission component is connected to the rotating wheel.

[0016] A first magnetic element is connected to a third transmission element, and the first magnetic element is configured to reciprocate in a direction parallel to the second axis under the action of the third transmission element.

[0017] The second scraper is provided with a second magnetic element that cooperates with the first magnetic element, and the second scraper follows the second magnetic element to perform the reciprocating motion through the first magnetic element.

[0018] In one embodiment, the spray lubrication device further includes a second oil tank disposed in the housing and a second oil supply pipe connecting the second oil tank and the first oil tank;

[0019] The oil scraping mechanism further includes a second drive assembly disposed in the first oil tank and a second oil scraping plate connected to the first scraper; the second drive member moves under the action of lubricating oil input into the first oil tank, and the second drive assembly is configured to drive the second scraper to reciprocate relative to the first scraper along a second axis;

[0020] The outlet of the second oil supply pipe is positioned toward the second drive assembly, and the lubricating oil output from the second oil supply pipe can provide power for the operation of the second drive assembly.

[0021] In one embodiment, the housing includes a top wall and a bottom wall disposed opposite each other along a third direction, and a side wall is provided between the top wall and the bottom wall, the top wall, the bottom wall and the side wall forming the receiving cavity; the first oil tank is connected to the top wall, and the spray lubrication device is disposed on the side of the first oil tank away from the top wall; the bottom wall is provided with an oil storage tank, and the gearbox further includes a second oil tank disposed on the side wall, the second oil tank being connected to the first oil tank through a second oil supply pipe, and the second oil tank being connected to the oil storage tank through a third oil supply pipe.

[0022] In one embodiment, an oil level detection component is further included within the housing, the oil level detection component comprising:

[0023] The float is configured to move according to changes in the level of the lubricating oil accumulated within the housing; and

[0024] A detection element is disposed in the housing and connected to the float; the detection element is configured to emit a corresponding oil quantity detection signal according to the movement position of the float.

[0025] In one embodiment, the oil level detection component further includes:

[0026] A base is connected to the housing, and the base is provided with detection contacts;

[0027] A connecting strip is movably connected to the base. One end of the connecting strip is connected to the float, and the other end extends into the base and is provided with a sensing contact capable of sensing the detection contact. The connecting strip is configured to move relative to the base as the float moves. The detection contact and the sensing contact constitute the detection element.

[0028] A second elastic element, connected between the connecting strip and the base, is configured to provide an elastic force for the connecting strip to return to its original position.

[0029] On the one hand, an automatic control method for a spray lubrication device for a gearbox is provided, employing the aforementioned spray lubrication device, comprising the following steps:

[0030] Start the sprinkler system;

[0031] Detect the level of lubricating oil in the transmission;

[0032] Determine the relationship between the lubricating oil level and a threshold in the transmission, wherein the threshold includes a first threshold and a second threshold; when the level is greater than or equal to the first threshold, extract the lubricating oil from the bottom of the transmission and transport it to the first oil tank; when the level is less than or equal to the second threshold, activate the oil scraping mechanism to scrape off the lubricating oil from the inner wall of the housing.

[0033] The speed at which the lubricating oil is delivered from the bottom of the housing to the first oil tank is adjusted according to the liquid level.

[0034] On the one hand, a gearbox is provided, comprising:

[0035] The housing includes a receiving cavity; and the aforementioned spray lubrication device.

[0036] The spray lubrication device and its automatic control method, as well as the gearbox of this application, improve the problem of inaccurate and incomplete lubricant coverage caused by the size of the gearbox and the limited range of splash lubrication by setting an oscillating nozzle, which greatly avoids the wear of gearbox parts during transmission and increases the service life of the gearbox; by setting an oil scraping mechanism, the lubricant adhering inside the housing is scraped off to the bottom and recycled, thereby improving the lubricant utilization rate. Attached Figure Description

[0037] Figure 1 This is a cross-sectional structural diagram of an embodiment of this application;

[0038] Figure 2 for Figure 1 A structural diagram from another perspective;

[0039] Figure 3 This is a three-dimensional structural diagram of an embodiment of this application;

[0040] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0041] Figure 5 This is a partial schematic diagram of a first oil tank and a spraying mechanism according to an embodiment of this application;

[0042] Figure 6 This is a partial schematic diagram of a spraying mechanism according to an embodiment of this application;

[0043] Figure 7 This is a partial schematic diagram of the second oil pipeline and the second drive assembly according to an embodiment of this application;

[0044] Figure 8 This is a schematic diagram of the structure of the first fuel tank and the second drive assembly according to an embodiment of this application;

[0045] Figure 9 This is a partial schematic diagram of the first oil tank and scraper mechanism according to an embodiment of this application;

[0046] Figure 10 This is a schematic diagram of the structure of an oil level detection component according to an embodiment of this application;

[0047] Figure 11 The first embodiment of this application is shown in the flowchart of the automatic control method. Detailed Implementation

[0048] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0049] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0054] Research has revealed that in related technologies, transmissions primarily employ splash lubrication for lubrication and cooling. However, due to limitations in transmission size and the range of splash lubrication, the lubrication coverage and accuracy are low. The meshing gears within the transmission cannot receive precise lubrication to a certain extent, which exacerbates wear on these gears during transmission and affects their lifespan. Furthermore, during high-speed driving, the lubricating oil in the transmission is rapidly swung around by the rotating shaft to lubricate the gear meshing. However, due to the limited internal space of the transmission, a significant portion of the lubricating oil is thrown onto the inner walls of the transmission housing. Because of the lubricating oil's viscosity, this oil does not quickly fall back to the bottom of the transmission, reducing its utilization rate and significantly diminishing the lubrication effect. On the other hand, the high-frequency rotation of the shaft raises the temperature of the entire transmission, posing a safety hazard to the driver. The heated transmission also reacts with moisture in the outside air, potentially causing corrosion of the metal transmission. Therefore, this application provides a highly efficient and accurate lubricated transmission, a spray lubrication device, and its automatic control method.

[0055] See Figure 1 , Figure 1A schematic diagram of a gearbox 1 according to an embodiment of this application is shown. The gearbox 1 provided in this embodiment includes a spray lubrication device and a housing 10 for the gearbox 1. The housing 10 includes a receiving cavity 50. A first oil tank 110 is disposed in the receiving cavity 50 and is used to store lubricating oil. The spray lubrication device is disposed in the receiving cavity 50 and is used to spray lubricating oil into the interior of the gearbox 1. The spray lubrication device includes the first oil tank 110, a spraying mechanism 20, and an oil scraping mechanism 30.

[0056] The spray mechanism 20 is connected to the first oil tank 110. The spray mechanism 20 includes a first drive assembly 220, a first oil supply pipe 211, and a nozzle 210 for spraying lubricating oil. The first oil supply pipe 211 connects the first oil tank 110 and the nozzle 210. The first drive assembly 220 is configured to drive the nozzle 210 to swing around a first axis X. This swinging motion can be either rotating to a preset angle and then positioning it at that preset angle for spraying, or moving regularly according to a certain swing amplitude. The swinging nozzle 210 can provide all-round lubrication to the components in the housing 10 over a wide range, effectively solving the limitations of the size of the gearbox 1 and the splash lubrication range. This allows the meshing components inside the gearbox 1 to receive precise and comprehensive lubrication, greatly improving the wear of the gearbox 1 components during transmission and increasing the service life of the gearbox 1.

[0057] like Figure 1 , Figure 2 As shown, the first drive assembly 220 includes a prime mover 202, a first transmission member 203, and a second transmission member 207. The prime mover 202 has an output shaft capable of rotating about a second axis Y. In this embodiment, the prime mover 202 is an electric motor. The first transmission member 206 is disposed along the second axis Y and configured to rotate about the second axis Y. The first transmission member 206 is drively connected to the output shaft. The second axis Y is perpendicular to the first axis X. The second transmission member 207 is disposed along the first axis X and is drively connected to the first transmission member 206 and the nozzle 210, and rotates about the first axis X under the drive of the first transmission member 206.

[0058] like Figures 4 to 6 As shown, the first transmission member 206 is connected to the output shaft via the first rotating shaft 203, and the first transmission member 206, the first rotating shaft 203, and the output shaft are coaxially arranged. In this embodiment, the first transmission member 206 has a spiral pattern on its circumference, and the second transmission member 207 has teeth that mesh with the spiral pattern. Through the meshing teeth and spiral pattern, the rotation of the first transmission member 206 around the second axis Y is converted into the rotation of the second transmission member 207 around the first axis X. The second transmission member 207 has a second rotating shaft 208, which is connected to the nozzle 210. The second transmission member 207 drives the second rotating shaft 208 to move, thereby causing the nozzle 210 to swing.

[0059] Furthermore, the spraying mechanism 20 also includes a base plate 201, a first bracket 204, and a second bracket 209 for supporting and positioning the first drive assembly 220 and the nozzle 210. The base plate 201 is fixedly connected to the side wall of the first oil tank 110, the first bracket 204 is connected to the base plate 201, and the first bracket 204 is connected between the second bracket 209 and the base plate 201. The prime mover 202 and the first transmission component 206 are connected to the first bracket 204 and positioned accordingly by the first bracket 204. The second rotating shaft 208 is connected to the nozzle 210 via the second bracket 209, and the second rotating shaft 208 drives the second bracket 209 to move, thereby causing the nozzle 210 to swing. The first bracket 204 and the second bracket 209 are frame-shaped structures; preferably, the second bracket 209 is U-shaped. The first bracket 204 and the second bracket 209, after being connected, form a cavity in the middle. At least part of the structure of the first drive assembly 220, the first oil pipe 211 and the nozzle 210 can be accommodated in the cavity or disposed through the cavity.

[0060] The nozzle 210 has several spaced-apart nozzles 205, and is connected to the first oil tank 110 via a first oil supply pipe 211. An oil pump may be installed on the first oil supply pipe 211 to power the flow of lubricating oil within it. The nozzle 210 is positioned relatively low in the third direction (Y) of the spraying mechanism 20. Multiple nozzles 210 can be spaced apart, and the spacing, number, and swing angle of the nozzles 210 can be adjusted according to the shape of the housing 10 to increase the spray coverage.

[0061] like Figure 6 As shown, the oil scraping mechanism 30 is drivenly connected to the spraying mechanism 20. The oil scraping mechanism 30 includes an oil scraping shaft 301 and a first scraper 302 connected to the oil scraping shaft 301. The oil scraping shaft 301 is drivenly connected to the first drive assembly 220. The first scraper 302 can rotate around the second axis Y under the action of the first drive assembly 220. The first scraper 302 contacts the inner wall of the housing 10 and can scrape off the lubricating oil adhering to a certain range on the inner wall when rotating. There are multiple first scrapers 302, with two forming a group. The two first scrapers 302 in each group are symmetrically arranged on both sides of the spraying mechanism 20.

[0062] Specifically, the first scraper 302 is connected to the prime mover 202 via the oil scraping shaft 301. The first scraper 302 is arc-shaped; specifically, it is an arc-shaped plate protruding towards the first oil tank 110. The rotating arc-shaped first scraper 302 scrapes the lubricating oil on the side wall of the built-in first oil tank 110, causing it to fall to the bottom of the housing 10. This ensures sufficient lubricating oil on the shaft, reduces the loss of splashed lubricating oil, and improves the utilization rate of lubricating oil.

[0063] The oil scraping mechanism 30 also includes a second drive assembly 310 and a second scraper 303 connected to the first scraper 302. The second drive assembly 310 is configured to drive the second scraper 303 to reciprocate relative to the first scraper 302 along the second axis Y.

[0064] The spray lubrication device also includes a second oil tank, which is connected to the first oil tank 110 via a second oil supply pipe 14. The spray mechanism 20 also includes a second drive assembly 310 disposed within the first oil tank 110 and a second scraper 303 connected to the first scraper 302. The second drive assembly 310 is configured to drive the second scraper 303 to reciprocate relative to the first scraper 302 along a second axis Y. The outlet of the second oil supply pipe 14 is positioned to match the second drive assembly 310, and the lubricating oil output from the second oil supply pipe 14 provides the power for the second drive assembly 310 to operate. When the lubricating oil is transferred through the second oil supply pipe 14 into the first oil tank 110, the lubricating oil, under the action of impact, causes the second drive assembly 310 to operate, driving the second scraper 303 to scrape away the lubricating oil remaining on the curved surface during the cleaning process of the arc-shaped first scraper 302. This step can be completed without external power, saving power resources, reducing costs, and facilitating installation.

[0065] like Figures 7 to 9 As shown, the second drive assembly 310 includes a rotating wheel 311, a third transmission member, and a first magnetic member 314. The rotating wheel 311 is configured to rotate under the drive of external oil supply. The third transmission member is drively connected to the rotating wheel 311. The first magnetic member 314 is connected to the third transmission member and is configured to reciprocate along the second axis Y under the action of the third transmission member. The second scraper 303 is provided with a second magnetic member that cooperates with the first magnetic member 314, and the second scraper 303 reciprocates following the second magnetic member through the first magnetic member 314.

[0066] Specifically, the first oil tank 110 is provided with a movement groove 111, which penetrates the first oil tank 110 but does not connect the oil storage chamber of the first oil tank 110 to the outside. The second drive assembly 310 is at least partially inserted through the movement groove 111. Furthermore, the rotating wheel 311 is located on the side of the movement groove 111 away from the second scraper 303, and the third transmission component and the first magnetic component 314 are at least partially disposed in the movement groove 111.

[0067] Furthermore, the rotating wheel 311 includes multiple blades. These blades rotate under the action of lubricating oil output from the second oil supply pipe 14, driving the third transmission component. The third transmission component includes a rack 313, a third rotating shaft 315, and a gear. The third rotating shaft 315 is connected to the rotating wheel 311, and the gear 312 is connected to the end of the third rotating shaft 315 away from the rotating wheel 311. The rack 313 is disposed on the inner wall of the motion groove 111, and the rack 313 meshes with the gear 312. The rotation of the rotating wheel 311 drives the gear 312 to rotate around a third direction Y via the third rotating shaft 315, causing the rack 313 to reciprocate along the second axis Y.

[0068] like Figure 6 As shown, the first scraper 302 and the second scraper 303 are connected in a driving manner. One of the first scraper 302 and the second scraper 303 is provided with a guide rail, and the other is provided with a guide groove 305 that is drivingly connected to the guide rail. The shape of the second scraper 303 matches the arc shape of the first scraper 302, so that at least one side of the second scraper 303 abuts against the surface of the first scraper 302 away from the first oil tank 110. The movement of the second scraper 303 along the second axis Y is used to remove the lubricating oil splashed on the first scraper 302, which can ensure that the lubricating oil splashed due to high-speed rotation can be quickly transferred to the bottom of the housing 10, thereby ensuring sufficient lubricating oil acting on the rotating shaft, reducing the loss of splash lubrication power, and effectively realizing energy saving of the lubrication system.

[0069] Since the second scraper 303 is spaced apart from the second drive assembly 310 and is driven by a magnetic component, in order to ensure the stability of the movement, a first elastic component 304 is also provided between the second scraper 303 and the first scraper 302. One end of the first elastic component 304 is connected to the first scraper 302 and the other end is connected to the second scraper 303, providing elastic force for the second scraper 303 to reset.

[0070] The housing 10 includes a top wall 11 and a bottom wall 13 disposed opposite each other along a third direction Y. A side wall 12 is provided between the top wall 11 and the bottom wall 13, and the top wall 11, bottom wall 13, and side wall 12 form a receiving cavity 50. A first oil tank 110 is connected to the top wall 11, and a spray lubrication device is provided on the side of the first oil tank 110 away from the top wall 11. The bottom wall 13 is provided with an oil storage tank 16. The gearbox 1 also includes a second oil tank 120 provided on the side wall 12. The second oil tank 120 is connected to the first oil tank 110 through a second oil supply pipe 14, and the second oil tank 120 is connected to the oil storage tank 16 through a third oil supply pipe 15.

[0071] Specifically, the second oil tank 120 is located between the oil storage tank 16 and the first oil tank 110 in the third direction Y, and the second oil tank 120 is disposed on the outer wall of the housing 10. The third oil supply pipe 15 is connected to an oil pump, which draws lubricating oil from the lower oil storage tank 16 and delivers it to the second oil tank 120. The second oil supply pipe 14 extends from the second oil tank 120, passes through the housing 10, and extends into the first oil tank 110.

[0072] like Figure 3 As shown, the second oil tank 120 is located outside the housing 10. The second oil tank 120 is equipped with a filter unit. The filter unit is used to filter the lubricating oil that enters the second oil tank 120 through the third oil supply pipe 15, so that the second oil supply pipe 14 outputs the filtered lubricating oil. Since the second oil tank 120 is located outside the housing 10, the lubricating oil can also be temporarily cooled when passing through the second oil tank 120.

[0073] An oil level detection component 40 is provided inside the cavity 50. Specifically, the oil level detection component 40 is located on the side wall 12 or bottom wall 13 of the housing 10 facing the cavity 50. In this embodiment, the oil level detection component 40 is located on the side wall 12 of the oil storage tank 16.

[0074] like Figure 10 As shown, the oil level detection assembly 40 includes a float 401 and a detection element. The float 401 is configured to move according to changes in the level of lubricating oil accumulated within the housing 10. The detection element is located in the housing 10 and connected to the float 401. The detection element is configured to emit an oil level detection signal based on the position reached by the float 401. When the oil level is greater than or equal to a first threshold, the float 401 moves with the lubricating oil level to a first preset position, causing the detection element to emit a first oil level detection signal. When the oil level is less than or equal to a second threshold, the float 401 moves with the lubricating oil level to a second preset position, causing the detection element to emit a second oil level detection signal. By setting the detection element, automated control of the spray lubrication device can be achieved, improving the utilization rate of lubricating oil.

[0075] The oil level detection assembly 40 also includes a base 403, a connecting strip 402, and a second elastic element 406. The base 403 is connected to the housing 10 and has a detection contact 405. The connecting strip 402 is movably connected to the base 403; specifically, one end of the connecting strip 402 is connected to a float 401, and the other end extends into the base 403 and has a sensing contact capable of sensing the detection contact 405. The detection contact 405 and the sensing contact 404 are detection elements. The second elastic element 406 is connected between the connecting strip 402 and the base 403 and is configured to provide an elastic force for the connecting strip 402 to reset.

[0076] The connecting bar 402 is configured to move relative to the base 403 with the float 401. When the connecting bar 402 moves to certain positions, the detection contact 405 contacts the sensing contact 404, emitting an oil level detection signal. Multiple detection contacts 405 are provided, corresponding to the aforementioned first threshold and second threshold, respectively.

[0077] The spray lubrication device also includes a controller, which controls the start and stop of the spray mechanism 20 and the oil scraping mechanism 30, and controls the spray mechanism 20 and the oil scraping mechanism 30 to make corresponding adjustments according to the oil quantity detection signal sent by the oil quantity detection component 40.

[0078] The following is a brief description of the working principle of the spray lubrication device of the gearbox 1 in this application.

[0079] In use, under the control of the controller, the prime mover 202 drives the first rotating shaft 203 to rotate around the second axis Y via the output shaft. The first transmission component 206, which is connected to the first rotating shaft 203, moves around the second axis Y. The first transmission component 206 drives the second transmission component 207 to rotate and transmits power to the second rotating shaft 208. The second rotating shaft 208 drives the second bracket 209 to move around the first axis X. The second bracket 209 drives the nozzle 210 to swing around the first axis X, which can lubricate the components in the housing 10 in a wide range. This effectively solves the problem that the meshing shafts in the gearbox 1 cannot be accurately and comprehensively lubricated to a certain extent due to the long length of the gearbox 1 and the limitation of the lubrication range due to splashing. This greatly avoids the wear of the gear 312 in the transmission and increases the service life of the gearbox 1.

[0080] The high-speed rotation of components within the housing 10 will splash lubricating oil onto the top wall 11 of the housing 10 or the bottom wall 13 of the first oil tank 110. If this is not addressed, the lubricating oil on the rotating shaft will gradually decrease, affecting the lubrication effect. The output shaft of the prime mover 202 drives the oil scraping shaft 301 to rotate around the second axis Y. The oil scraping shaft 301 drives the first scraper 302 to rotate. At this time, the rotating first scraper 302 scrapes the lubricating oil splashed onto the bottom surface of the first oil tank 110, causing it to fall to the bottom of the housing 10. Furthermore, the lubricating oil output from the second oil supply pipe 14 drives the rotating wheel 311 to rotate. The rotating wheel 311 drives the gear 312. The rotating gear 312 drives the first magnetic component 314 to move along the second axis Y through the meshing rack 313. The first magnetic component 314 drives the second scraper 303, which is equipped with a second magnetic component, to move through magnetic attraction. This step can be completed without external power, saving power resources to a certain extent. This scrapes away the residual lubricating oil in the first arc-shaped scraper 302, ensuring that the lubricating oil splashed at the bottom of the first oil tank 110 due to high-speed rotation can be quickly transferred to the bottom of the housing 10, providing sufficient lubricating oil, reducing the loss of splash lubrication power, and effectively achieving energy saving of the lubrication system.

[0081] Due to the high-speed rotation of the components in the housing 10, the lubricating oil at the bottom of the inner cavity of the housing 10 will decrease rapidly, that is, the lubricating oil level in the housing 10 will become low. The float 401 comes into contact with the lubricating oil at the bottom of the inner cavity of the housing 10. At this time, due to the change in the liquid level, the float 401 will move along the connecting strip 402 in three directions under the action of the viscous lubricating oil. At this time, the sensing contact 404 on the connecting strip 402 contacts the detection contact 405 to send out a corresponding oil quantity detection signal, thereby extracting the lubricating oil at the bottom of the inner cavity of the housing 10 and / or activating the oil scraping mechanism 30. The extracted lubricating oil is transferred via the third oil pipe 15, filtered in the second oil tank 120, and then enters the first oil tank 110 through the second oil pipe 14. It is then sprayed again onto the components inside the housing 10 through the nozzle 210 for lubrication. The pumping speed can be adjusted according to the lubricating oil level in the gearbox 1, allowing for rapid response and preventing the gearbox 1 from malfunctioning due to excessively high lubricating oil temperature. It also helps prevent the heated gearbox 1 from coming into contact with moisture in the outside air and causing corrosion. The lubricating oil in the device originates from inside the housing 10. The lubricating oil drawn by the pump can be transferred to the second oil tank 120 for simple filtration before circulating back into the housing 10. This external filter tank facilitates lubricating oil circulation, accelerating cooling and preventing the lubricating oil from affecting the shaft's working efficiency due to prolonged use.

[0082] like Figure 11 As shown, Figure 11 An automatic control method for a spray lubrication device for a gearbox according to an embodiment of this application is shown, employing the aforementioned gearbox 1 and spray lubrication device, including:

[0083] S100, Start the spray mechanism 20.

[0084] Specifically, after the spraying mechanism 20 is activated, the spraying mechanism 20 sprays the lubricating oil in the first oil tank 110 out of the nozzle 210. The oscillating nozzle 210 then ensures that the lubricating oil is fully and accurately covered on the components inside the gearbox 1.

[0085] Furthermore, the oil skimming mechanism 30 can also be activated simultaneously with the spraying mechanism 20.

[0086] S200, Detect the level of lubricating oil in transmission 1.

[0087] Specifically, the oil level detection component 40 is used to detect the level of lubricating oil in the transmission 1, and subsequent steps are performed based on whether the oil level detection component 40 generates an oil level detection signal and what kind of oil level detection signal is generated.

[0088] S300: Determine the relationship between the lubricating oil level and a threshold value in the transmission 1. The threshold value includes a first threshold value and a second threshold value.

[0089] Specifically, when the fluid level is greater than or equal to the first threshold, the oil level detection component 40 sends a first oil level detection signal, controlling the oil pump to operate and extract the lubricating oil from the bottom of the transmission 1 and deliver it to the first oil tank 110. When the fluid level is less than or equal to the second threshold, the oil level detection component 40 sends a second oil level detection signal, controlling the oil scraping mechanism 30 to start, scraping the lubricating oil off the inner wall of the housing 10 and the first scraper 302. When the oil level detection component 40 does not send a signal, the oil pump is not started for extraction, but the oil scraping mechanism 30 can be started.

[0090] Furthermore, the detection contact 405 includes a first detection contact 405 and a second detection contact 405. When the first detection contact 405 is connected to the sensing contact 404, it corresponds to the first threshold mentioned above. When the second detection contact 405 is connected to the sensing contact 404, it corresponds to the second threshold mentioned above.

[0091] S400, adjust the speed at which lubricating oil is delivered from the bottom of housing 10 to the first oil tank 110 according to the liquid level.

[0092] Specifically, the threshold also includes multiple set values ​​between the first and second thresholds, each corresponding to a different liquid level range. Continuing with step S200, the relationship between the liquid level and the set values ​​is determined by the oil level detection component 40. At this time, a liquid level signal is output to indicate the range of the oil level. The power of the oil pump is adjusted according to the range of the liquid level to regulate the speed of lubricating oil extraction. There is no specific order requirement between steps S300 and S400; they can be performed simultaneously.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A spray lubrication device for a gearbox, the gearbox comprising a housing, characterized in that, The spray lubrication device includes: A first oil tank is disposed inside the housing, and the first oil tank stores lubricating oil; A spraying mechanism, connected to the first oil tank, includes a first drive assembly, a first oil supply pipe, and a nozzle for spraying lubricating oil. The first oil supply pipe connects the first oil tank and the nozzle. The first drive assembly is configured to drive the nozzle to oscillate about a first axis. An oil scraping mechanism is connected to the spraying mechanism. The oil scraping mechanism includes an oil scraping shaft and a first scraper connected to the oil scraping shaft. The oil scraping shaft is driven to the first drive assembly. The first scraper can rotate around a second axis under the action of the first drive assembly.

2. The spray lubrication device for a gearbox according to claim 1, characterized in that, The first driving component includes: The prime mover has an output shaft capable of rotating about the second axis; A first transmission member is drively connected to the output shaft and is configured to rotate about the second axis under the drive of the output shaft. The second transmission component is connected to the first transmission component and the nozzle. The second transmission component rotates around the first axis under the drive of the first transmission component, so as to drive the nozzle to swing around the first axis; the first axis and the second axis are perpendicular to each other.

3. The spray lubrication device for a gearbox according to claim 1, characterized in that, The oil scraping mechanism further includes a second drive component and a second scraper connected to the first scraper. The second drive component is configured to drive the second scraper to reciprocate relative to the first scraper along the second axis.

4. The spray lubrication device for a gearbox according to claim 3, characterized in that, The second driving component includes: The impeller is configured to rotate about a third axis under the drive of externally input lubricating oil; the third axis, the first axis, and the second axis are perpendicular to each other. The third transmission component is connected to the rotating wheel. A first magnetic element is connected to a third transmission element, and the first magnetic element is configured to reciprocate in a direction parallel to the second axis under the action of the third transmission element. The second scraper is provided with a second magnetic element that cooperates with the first magnetic element, and the second scraper follows the second magnetic element to perform the reciprocating motion through the first magnetic element.

5. The spray lubrication device for a gearbox according to claim 1, characterized in that, The spray lubrication device also includes a second oil tank disposed in the housing and a second oil supply pipe connecting the second oil tank and the first oil tank; The oil scraping mechanism further includes a second drive assembly disposed in the first oil tank and a second scraper connected to the first scraper; the second drive assembly moves under the action of lubricating oil input into the first oil tank, and the second drive assembly is configured to drive the second scraper to reciprocate relative to the first scraper along a second axis; The outlet of the second oil supply pipe is positioned toward the second drive assembly, and the lubricating oil output from the second oil supply pipe can provide power for the operation of the second drive assembly.

6. The spray lubrication device for a gearbox according to claim 1, characterized in that, The housing includes a top wall and a bottom wall disposed opposite each other along a third direction, and a side wall is provided between the top wall and the bottom wall, the top wall, the bottom wall and the side wall forming a receiving cavity; the first oil tank is connected to the top wall, and the spray lubrication device is provided on the side of the first oil tank away from the top wall; the bottom wall is provided with an oil storage tank, and the gearbox also includes a second oil tank provided on the side wall, the second oil tank being connected to the first oil tank through a second oil supply pipe, and the second oil tank being connected to the oil storage tank through a third oil supply pipe.

7. The spray lubrication device for a gearbox according to claim 1, characterized in that, It also includes an oil level detection component disposed within the housing, the oil level detection component comprising: The float is configured to move according to changes in the level of the lubricating oil accumulated within the housing; and A detection element is disposed in the housing and connected to the float; the detection element is configured to emit a corresponding oil quantity detection signal according to the movement position of the float.

8. The spray lubrication device for a gearbox according to claim 7, characterized in that, The oil level detection component also includes: A base is connected to the housing, and the base is provided with detection contacts; A connecting strip is movably connected to the base. One end of the connecting strip is connected to the float, and the other end extends into the base and is provided with a sensing contact capable of sensing the detection contact. The connecting strip is configured to move relative to the base as the float moves. The detection contact and the sensing contact constitute the detection element. A second elastic element, connected between the connecting strip and the base, is configured to provide an elastic force for the connecting strip to return to its original position.

9. An automatic control method for a spray lubrication device of a gearbox, employing the spray lubrication device according to any one of claims 1 to 8, characterized in that, Includes the following steps: Start the sprinkler system; Detect the level of lubricating oil in the transmission; Determine the relationship between the lubricating oil level and a threshold in the transmission, wherein the threshold includes a first threshold and a second threshold; when the level is greater than or equal to the first threshold, extract the lubricating oil from the bottom of the transmission and transport it to the first oil tank; when the level is less than or equal to the second threshold, activate the oil scraping mechanism to scrape off the lubricating oil from the inner wall of the housing. The speed at which the lubricating oil is delivered from the bottom of the housing to the first oil tank is adjusted according to the liquid level.

10. A gearbox, characterized in that, include: A housing, including a receiving cavity; and a spray lubrication device as described in any one of claims 1 to 8.

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