Transmission lubricating oil circuit visualization test device integrated with flow monitoring

Abstract

The present application belongs to the technical field of transmission system lubrication, and particularly relates to a transmission device lubricating oil circuit visual test device integrated with flow monitoring, comprising: a low-speed discharge structure, which is internally provided with a low-speed discharge oil channel in communication with a box oil channel, and the low-speed discharge oil channel is in communication with a low-speed discharge oil collecting box; an input shaft structure, which is arranged on one side of the low-speed discharge structure, and is internally provided with an input shaft oil channel in communication with the low-speed discharge oil channel, and the input shaft oil channel is in communication with a high-speed discharge oil collecting box and a remote motor oil collecting box; a high-speed discharge structure, which is internally provided with a high-speed discharge oil channel in communication with the input shaft oil channel and the high-speed discharge oil collecting box; the rotation speeds of the low-speed discharge structure, the input shaft structure and the high-speed discharge structure are respectively regulated; the low-speed discharge oil collecting box and the high-speed discharge oil collecting box are provided with observation windows, the remote motor oil collecting box is transparently arranged, each oil collecting box is provided with an oil outlet at the bottom end, and each oil outlet is correspondingly provided with a measuring cylinder below. The present application can reproduce real working conditions, realize oil circuit visual observation and accurate measurement of branch flow.

Description

Technical Field

[0001] This invention belongs to the field of transmission system lubrication technology, and particularly relates to a visual test device for the lubrication oil circuit of a transmission device with integrated flow monitoring. Background Technology

[0002] Planetary transmissions, due to their compact structure, high transmission efficiency, and strong load-bearing capacity, have become a core component of electric drive systems in new energy vehicles. The performance of their lubrication circuits directly determines the overall reliability and service life of the transmission. In the design and development of planetary transmissions, the rational design of the lubrication circuit is crucial for ensuring adequate lubrication and effective heat dissipation for core friction pairs such as gears and bearings, directly affecting the transmission's load-bearing capacity, transmission efficiency, and service life. Currently, research on planetary transmission lubrication circuits mainly focuses on structural design and simulation analysis, using fluid dynamics simulations to predict and optimize the flow field distribution, pressure loss, and flow rate distribution within the circuit.

[0003] However, there are certain discrepancies between simulation analysis results and actual operating conditions, making it difficult to fully verify the rationality and reliability of the oil circuit design by relying solely on simulation methods. Existing technologies cannot simultaneously reproduce the actual operating conditions, achieve visualized observation of the oil circuit, and test the flow rate of branch lines, resulting in the inability to systematically verify the rationality and reliability of the oil circuit design scheme. Summary of the Invention

[0004] The purpose of this invention is to provide a visual testing device for the lubrication circuit of a transmission device that integrates flow monitoring, in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following solution: A visual testing device for the lubrication oil circuit of a transmission device with integrated flow monitoring, comprising: The low-speed discharge structure has an internal low-speed discharge oil passage that is connected to the tank oil passage and to the low-speed discharge oil collection box of the low-speed discharge structure. The low-speed discharge oil collection box has an observation window and an oil outlet at the bottom. Below the oil outlet, there is a measuring cylinder for collecting the oil in the low-speed discharge oil collection box. An input shaft structure is disposed on one side of the low-speed discharge structure. An input shaft oil passage is provided inside the input shaft structure. The input shaft oil passage is connected to the low-speed discharge oil passage. The input shaft oil passage is connected to the high-speed discharge oil collection box and the remote motor oil collection box of the input shaft structure. An oil outlet is provided at the bottom of the high-speed discharge oil collection box and the remote motor oil collection box. A measuring cylinder for collecting oil in the high-speed discharge oil collection box and a measuring cylinder for collecting oil in the remote motor oil collection box are respectively provided below the two oil outlets. The remote motor oil collection box is transparent. An observation window is provided on the high-speed discharge oil collection box. The high-speed oil discharge structure has a high-speed oil discharge channel inside, which is connected to the input shaft oil channel and the high-speed oil discharge collection box. The rotational speeds of the low-speed feed structure, the input shaft structure, and the high-speed feed structure are respectively regulated.

[0006] Preferably, the low-speed discharge structure includes a low-speed discharge side bearing housing, within which a low-speed discharge bearing housing oil ring is disposed. The low-speed discharge bearing housing oil ring is located on one side of the low-speed discharge side bearing housing. An intermediate bearing housing is coaxially fixed to the side of the low-speed discharge side bearing housing where the low-speed discharge bearing housing oil ring is disposed. The intermediate bearing housing and the low-speed discharge side bearing housing form the low-speed discharge oil collection box. A low-speed discharge main shaft is rotatably connected to the low-speed discharge side bearing housing, and one end of the low-speed discharge main shaft extends into the low-speed discharge oil collection box. A low-speed oil discharge ring is coaxially connected inside the oil ring of the bearing housing. The other end of the low-speed main shaft extends out of the low-speed side bearing housing and is connected to a second power source. A low-speed planetary carrier is provided on the outside of the low-speed oil discharge ring. Multiple low-speed planetary gears are circumferentially spaced on the low-speed planetary carrier. The low-speed planetary carrier is coaxially fixed to the low-speed main shaft. Two first skeleton oil seals are circumferentially provided between the low-speed planetary carrier and the low-speed bearing housing oil ring, with a gap between the two first skeleton oil seals.

[0007] Preferably, the low-speed oil discharge passage includes a plurality of first flow channels and a plurality of sixth flow channels formed on the low-speed planetary carrier, a plurality of second flow channels formed on the low-speed oil discharge ring, a plurality of third flow channels formed on the outer side wall of the low-speed main shaft, a fifth flow channel coaxially formed at one end of the low-speed main shaft, and a seventh flow channel formed on the low-speed planetary gears, wherein the first flow channels are located within the interval between the two first skeleton oil seals; The oil enters the first flow channel, and part of the oil flows through one of the sixth flow channels into one of the seventh flow channels. Then, after passing through one of the low-speed planetary gears, it enters the low-speed oil collection box. The other part of the oil flows sequentially through the second, third, and fifth flow channels, then enters other third flow channels, sequentially through other second, sixth, and seventh flow channels, and finally enters the low-speed oil collection box after passing through other low-speed planetary gears.

[0008] Preferably, the input shaft structure includes a first housing, an end bearing housing, and a remote motor oil collection box, which are sequentially and coaxially fixed along a direction away from the intermediate bearing housing. The high-speed oil collection box is located inside the first housing. The input main shaft is coaxially rotatably connected to the end bearing housing. One end of the input main shaft extends out of the remote motor oil collection box, and the other end of the input main shaft enters the first housing and is coaxially fixed to an input shaft extension. The input shaft extension is coaxially rotatably connected to the intermediate bearing housing. The input shaft extension is rotatably connected to the low-speed main shaft, and the connection between the input shaft extension and the low-speed main shaft is sealed. The end of the input main shaft extending out of the remote motor oil collection box is connected to a first power source.

[0009] Preferably, the input shaft oil passage includes an eighth flow channel coaxially formed within the input main shaft, the eighth flow channel extending through the input shaft extension and communicating with the fifth flow channel, the input shaft oil passage having a distal outlet communicating with the distal motor oil collection box and a proximal outlet communicating with the high-speed discharge oil collection box, and the input shaft extension having an extension shaft outlet communicating with the low-speed discharge oil collection box; The oil enters the eighth channel through the fifth channel. Some of the oil enters the low-speed oil collection box through the extension shaft outlet, some enters the remote motor oil collection box through the far end outlet, and some flows directly into the high-speed oil collection box through the near end outlet.

[0010] Preferably, the high-speed gearbox structure includes a high-speed gearbox main shaft coaxially sleeved on the outside of the input main shaft. The high-speed gearbox main shaft and the input main shaft are rotatably connected by bearings. A plurality of high-speed gearbox planetary gears are circumferentially and evenly spaced at one end of the high-speed gearbox main shaft near the intermediate bearing seat. An input shaft oil ring is sleeved on the outside of the input main shaft. Two second skeleton oil seals are circumferentially arranged between the input shaft oil ring and the high-speed gearbox main shaft, with a gap between the two second skeleton oil seals. Both second skeleton oil seals are close to the high-speed gearbox planetary gears. An output bevel gear is coaxially fixed to the end of the high-speed gearbox main shaft away from the intermediate bearing seat through a large gear flange. The output bevel gear meshes with an input bevel gear. The input bevel gear is coaxially fixed to the end of the bevel gear input shaft located inside the first housing. The bevel gear input shaft is rotatably connected to the top of the first housing through a sealing assembly. A third power source is fixedly connected to the top of the sealing assembly through a radial motor mounting flange. The top of the bevel gear input shaft is connected to the output end of the third power source.

[0011] Preferably, the high-speed oil discharge channel includes multiple ninth channels formed on the outside of the input spindle, multiple tenth channels and multiple eleventh channels formed on the input shaft oil ring, multiple twelfth channels formed on the high-speed discharge spindle, and a thirteenth channel formed on the high-speed discharge planetary gear. The high-speed discharge spindle is also provided with multiple oil outlets, which are connected to the high-speed discharge oil collection box. The tenth channels are located in the interval between the two second skeleton oil seals. The oil in the eighth flow channel enters the tenth flow channel through the ninth flow channel. Part of the oil enters the space between the high-speed conveyor spindle and the input spindle through the eleventh flow channel, and then enters the high-speed conveyor oil collection box. Another part of the oil flows sequentially through the gap between the two second skeleton oil seals, the twelfth flow channel, and the thirteenth flow channel, and then enters the high-speed conveyor oil collection box through the high-speed conveyor planetary gear. Part of the oil in the twelfth flow channel enters the high-speed conveyor oil collection box through the oil outlet.

[0012] Preferably, the housing oil passage includes a fourteenth flow channel formed on the low-speed exhaust side bearing seat and a fifteenth flow channel formed on the oil ring of the low-speed exhaust bearing seat. The fifteenth flow channel is located within the interval between the two first skeleton oil seals. The fifteenth flow channel is connected to the fourteenth flow channel. The fourteenth flow channel is connected to a vertical oil supply line. The vertical oil supply line is connected to a horizontal oil supply line.

[0013] Preferably, the top end of the intermediate bearing seat is connected to a first extension tube, and the top end of the first housing is connected to a second extension tube.

[0014] Preferably, the first housing is fixedly mounted on the base assembly, the first power source includes an electric spindle, which is connected to the input spindle via an input shaft coupling, the second power source includes a spindle motor, whose output shaft is connected to the low-speed spindle via a low-speed gear coupling, and the third power source includes a servo motor, whose output shaft is connected to the bevel gear input shaft. The spindle motor and the electric spindle are both fixedly mounted on the base assembly, and the spindle motor, the electric spindle, and the servo motor are all electrically connected to the speed control cabinet.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects: This invention provides a visual testing device for the lubrication circuit of a transmission device with integrated flow monitoring. The rotational speeds of the low-speed discharge structure, input shaft structure, and high-speed discharge structure are individually adjustable, allowing the test bench to independently assign target rotational speeds to each level of rotating oil passages. This accurately reproduces the real rotational speed characteristics of the planetary transmission device under different operating conditions, solving the problem of existing technologies being unable to simultaneously reproduce real operating conditions. By setting observation windows on the low-speed and high-speed discharge oil collection boxes and making the remote motor oil collection box transparent, test personnel can observe the flow state and flow field distribution of the lubricating oil inside the oil circuit in real time, solving the problem of existing technologies being unable to achieve visual observation of the oil circuit. By setting independent low-speed, high-speed, and remote motor oil collection boxes, each with an oil outlet at the bottom connected to an independent measuring cylinder, independent collection and measurement of return oil from different lubrication branches are achieved, solving the problem of existing technologies being unable to test branch flow rates. This invention can systematically verify the rationality and reliability of the lubrication circuit design scheme. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is an overall schematic diagram of the first housing in this invention; Figure 3 This is a left view of the first housing in this invention; Figure 4 for Figure 3 LL section view in the middle; Figure 5 This is a schematic diagram of the internal structure of the first housing in this invention; Figure 6 This is a schematic diagram of the oil passage structure in the housing of the present invention; Figure 7 This is a schematic diagram of the low-speed oil discharge channel in this invention; Figure 8 This is a schematic diagram of the structure of the intermediate bearing seat in this invention; Figure 9 This is a schematic diagram of the high-speed oil discharge channel in this invention; Figure 10 This is a schematic diagram of the input shaft oil passage in this invention; Figure 11 This is a schematic diagram of the structure of the first housing in this invention; Among them, A1 is the housing oil passage; A1-1 is the horizontal oil supply line; A1-2 is the vertical oil supply line; A1-3 is the low-speed exhaust side bearing housing; A1-4 is the low-speed exhaust bearing housing oil ring; A2 is the low-speed exhaust oil passage; A2-1 is the low-speed exhaust coupling; A2-2 is the low-speed exhaust main shaft; A2-3 is the first skeleton oil seal; A2-5 is the low-speed exhaust planetary gear; A2-6 is the low-speed exhaust planetary carrier; A2-7 is the low-speed exhaust oil ring; A3 is the low-speed exhaust oil collection box; A3-1 is the intermediate bearing housing; A3-2 is the first extension pipe; A4 is the high-speed exhaust oil passage; A4-1 is the high-speed exhaust planetary gear; A4-2 is the high-speed exhaust main shaft; A4-3 is the second skeleton oil seal; A4-6, Large gear flange; A4-7, Output bevel gear; A4-8, Input bevel gear; A4-9, Bevel gear input shaft; A4-10, Radial motor mounting flange; A4-11, Sealing assembly; A5, Input shaft oil passage; A5-1, Input shaft coupling; A5-2, Input spindle; A5-3, Input shaft oil ring; A5-4, Input shaft extension; A6, High-speed oil collection box; A6-1, First housing; A6-2, Second extension tube; A7, Remote motor oil collection box; A7-1, Acrylic housing; B1, Spindle motor; B2, Base assembly; B4, Servo motor; B5, Electric spindle; B6, Speed ​​control cabinet. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Reference Figures 1 to 11 This invention discloses a visual test device for the lubrication oil circuit of a transmission device with integrated flow monitoring, comprising: The low-speed discharge structure has an internal low-speed discharge oil passage A2, which is connected to the tank oil passage A1. The low-speed discharge oil passage A2 is also connected to the low-speed discharge oil collection box A3 of the low-speed discharge structure. The low-speed discharge oil collection box A3 has an observation window and an oil outlet at the bottom. Below the oil outlet, there is a measuring cylinder for collecting the oil in the low-speed discharge oil collection box A3. An input shaft structure is located on one side of the low-speed discharge structure. An input shaft oil passage A5 is provided inside the input shaft structure. The input shaft oil passage A5 is connected to the low-speed discharge oil passage A2. The input shaft oil passage A5 is connected to the high-speed discharge oil collection box A6 and the remote motor oil collection box A7 of the input shaft structure. The bottom of the high-speed discharge oil collection box A6 and the remote motor oil collection box A7 are provided with oil outlets. Below the two oil outlets, respectively, there are measuring cylinders for collecting oil in the high-speed discharge oil collection box A6 and the measuring cylinder for collecting oil in the remote motor oil collection box A7. The remote motor oil collection box A7 is transparent. The high-speed discharge oil collection box A6 is provided with an observation window. The high-speed oil discharge structure has a high-speed oil discharge channel A4 inside, which is connected to the input shaft oil channel A5 and the high-speed oil discharge collection box A6. The rotational speeds of the low-speed exhaust structure, the input shaft structure, and the high-speed exhaust structure are adjusted separately.

[0020] The overall frame structure of the test apparatus includes a low-speed discharge structure, an input shaft structure, and a high-speed discharge structure. Each structure contains a low-speed discharge oil passage A2, an input shaft oil passage A5, and a high-speed discharge oil passage A4, and the rotational speeds of the three structures are independently adjustable. During operation, an external pump station delivers oil through the housing oil passage A1 into the low-speed discharge oil passage A2. After flowing within the low-speed discharge structure, the oil enters the low-speed discharge oil collection box A3. Subsequently, through the connection between the low-speed discharge oil passage A2 and the input shaft oil passage A5, it enters the input shaft structure. Within the input shaft oil passage A5, the oil is split and flows into the high-speed discharge oil collection box A6 and the remote motor oil collection box A7. The remaining oil enters the high-speed discharge oil passage A4 and finally flows into the high-speed discharge oil collection box A6. The rotational speeds of each structure are independently adjustable, allowing each oil passage to achieve a corresponding target rotational speed to reproduce different driving conditions. A viewing window and a transparent remote motor oil collection box A7 enable visual observation. The oil outlet at the bottom of each collection box, combined with a measuring cylinder, allows for independent measurement of the flow rate of each branch.

[0021] The scheme is further optimized. The low-speed exhaust structure includes a low-speed exhaust side bearing housing A1-3, within which a low-speed exhaust bearing housing oil ring A1-4 is installed. The low-speed exhaust bearing housing oil ring A1-4 is located on one side of the low-speed exhaust side bearing housing A1-3. An intermediate bearing housing A3-1 is coaxially fixed to the side of the low-speed exhaust side bearing housing A1-3 where the low-speed exhaust bearing housing oil ring A1-4 is located. The intermediate bearing housing A3-1 and the low-speed exhaust side bearing housing A1-3 form a low-speed exhaust oil collection box A3. A low-speed exhaust main shaft A2-2 is rotatably connected to the low-speed exhaust side bearing housing A1-3. One end of the low-speed exhaust main shaft A2-2 extends into the low-speed exhaust... A low-speed oil drain ring A2-7 is coaxially connected inside the bearing housing oil ring A1-4. The other end of the low-speed main shaft A2-2 extends out of the low-speed side bearing housing A1-3 and is connected to a second power source. A low-speed planetary carrier A2-6 is provided on the outside of the low-speed oil drain ring A2-7. Multiple low-speed planetary gears A2-5 are circumferentially spaced on the low-speed planetary carrier A2-6. The low-speed planetary carrier A2-6 is coaxially fixed to the low-speed main shaft A2-2. Two first skeleton oil seals A2-3 are circumferentially provided between the low-speed planetary carrier A2-6 and the low-speed bearing housing oil ring A1-4, with a gap between the two first skeleton oil seals A2-3.

[0022] In operation, the second power source drives the low-speed discharge main shaft A2-2 to rotate. This shaft, in turn, drives the low-speed discharge oil ring A2-7 and the low-speed discharge planetary carrier A2-6 to rotate synchronously. The multiple low-speed discharge planetary gears A2-5, circumferentially spaced on the planetary carrier, rotate accordingly. A gap exists between the two first skeleton oil seals A2-3, which, in conjunction with the low-speed discharge bearing seat oil ring A1-4, forms a sealed oil cavity, ensuring that the oil flows along a predetermined path without leakage after entering the low-speed discharge structure. The low-speed discharge side bearing seat A1-3 and the intermediate bearing seat A3-1 together form the low-speed discharge oil collection box A3, enabling independent collection of return oil from the low-speed discharge oil passage. This allows the low-speed discharge oil passage to rotate independently and achieves sealed oil guidance, providing an undisturbed oil collection environment for subsequent flow measurement.

[0023] The scheme is further optimized. The low-speed oil discharge passage A2 includes multiple first flow channels and multiple sixth flow channels opened on the low-speed planetary carrier A2-6, multiple second flow channels opened on the low-speed oil discharge ring A2-7, multiple third flow channels opened on the outer wall of the low-speed main shaft A2-2, a fifth flow channel coaxially opened at one end of the low-speed main shaft A2-2, and a seventh flow channel opened on the low-speed planetary gear A2-5. The first flow channels are located within the interval between the two first skeleton oil seals A2-3. The oil enters the first flow channel. Part of the oil flows through one of the sixth flow channels into one of the seventh flow channels, and then through one of the low-speed planetary gears A2-5 before entering the low-speed oil collection box A3. The other part of the oil flows sequentially through the second, third, and fifth flow channels, and then into other third flow channels. It then flows sequentially through other second, sixth, and seventh flow channels, and finally through other low-speed planetary gears A2-5 before entering the low-speed oil collection box A3.

[0024] During use, after the oil enters the first flow channel located between the two first skeleton oil seals A2-3, a portion of the oil flows through the sixth flow channel into the seventh flow channel of the low-speed planetary gear A2-5, and then flows out through the low-speed planetary gear and into the low-speed oil collection box A3; another portion of the oil flows sequentially through the second flow channel on the low-speed oil ring A2-7, the third flow channel on the outer wall of the low-speed main shaft A2-2, and the fifth flow channel opened coaxially, and then further through the second, sixth, and seventh flow channels in other directions, and finally through other low-speed planetary gears A2-5 before entering the low-speed oil collection box A3. This achieves orderly distribution of the oil in the low-speed oil channel, ensuring that all the oil allocated to the low-speed oil channel is eventually collected by the low-speed oil collection box, thus guaranteeing the integrity and accuracy of the total flow measurement of the low-speed discharge.

[0025] Further optimization of the scheme: The input shaft structure includes a first housing A6-1, an end bearing housing, and a remote motor oil collection box A7, which are coaxially and fixedly connected in sequence along the direction away from the intermediate bearing housing A3-1. The high-speed oil collection box A6 is located inside the first housing A6-1. The input main shaft A5-2 is coaxially rotatably connected to the end bearing housing. One end of the input main shaft A5-2 extends out of the remote motor oil collection box A7, and the other end of the input main shaft A5-2 enters into the first housing A6-1 and is coaxially fixedly connected to an input shaft extension A5-4. The input shaft extension A5-4 is coaxially rotatably connected to the intermediate bearing housing A3-1. The input shaft extension A5-4 is rotatably connected to the low-speed main shaft A2-2, and the connection between the input shaft extension A5-4 and the low-speed main shaft A2-2 is sealed. The end of the input main shaft A5-2 that extends out of the remote motor oil collection box A7 is connected to a first power source.

[0026] The remote motor oil collection box A7 includes an acrylic housing A7-1. An oil outlet is provided at the bottom of the acrylic housing A7-1, and a measuring cylinder for collecting oil from the remote motor oil collection box A7 is provided below the oil outlet.

[0027] In operation, the first power source drives the input spindle A5-2 to rotate, which in turn drives the input shaft extension A5-4 to rotate synchronously. The input shaft extension is coaxially rotatably connected to the intermediate bearing housing A3-1 and rotatably connected and sealed to the low-speed discharge spindle A2-2, creating an independent rotational engagement between the low-speed discharge oil passage and the input shaft oil passage. The high-speed discharge oil collection box A6 is located inside the first housing A6-1, and the remote motor oil collection box A7 is located at the end through which the input spindle passes, enabling separate collection of oil from the near and far outlets of the input shaft oil passage. This structure allows the input shaft oil passage to rotate independently and guides the oil from the extension shaft outlet, near outlet, and far outlet to the low-speed discharge oil collection box, high-speed discharge oil collection box, and remote motor oil collection box, respectively, providing a structural basis for the independent measurement of the flow rate of each branch.

[0028] The input shaft oil passage A5 is further optimized to include an eighth flow channel coaxially opened within the input main shaft A5-2. The eighth flow channel passes through the input shaft extension A5-4 and is connected to the fifth flow channel. The input shaft oil passage A5 has a far-end outlet connected to the far-end motor oil collection box A7 and a near-end outlet connected to the high-speed discharge oil collection box A6. The input shaft extension A5-4 has an extension shaft outlet connected to the low-speed discharge oil collection box A3. The oil enters the eighth channel through the fifth channel. Some of the oil enters the low-speed oil collection box A3 through the extension shaft outlet, some of the oil enters the remote motor oil collection box A7 through the far end outlet, and some of the oil flows directly into the high-speed oil collection box A6 through the near end outlet.

[0029] In operation, the oil flows through the fifth channel of the low-speed main shaft A2-2 into the eighth channel coaxially opened within the input main shaft A5-2, thus achieving oil transfer. Within the input shaft extension A5-4, part of the oil flows through the extension shaft outlet into the low-speed discharge oil collection box A3, while the other part enters the input shaft oil passage. Within the input shaft oil passage, part of the oil flows through the far-end outlet into the far-end motor oil collection box A7, while part of the oil flows directly into the high-speed discharge oil collection box A6 through the near-end outlet opened on the input main shaft A5-2. This achieves path-based flow separation of the oil within the input shaft oil passage, allowing the oil from the near-end motor outlet and the far-end motor outlet to be collected into different oil collection boxes, thereby enabling separate measurement of the flow rate of different branches of the input shaft oil passage.

[0030] Further optimizing the design, the high-speed gearbox structure includes a high-speed gearbox main shaft A4-2 coaxially sleeved on the outside of the input main shaft A5-2. The high-speed gearbox main shaft A4-2 and the input main shaft A5-2 are rotatably connected via bearings. Multiple high-speed gearbox planetary gears A4-1 are circumferentially and evenly spaced at one end of the high-speed gearbox main shaft A4-2 near the intermediate bearing seat A3-1. An input shaft oil ring A5-3 is sleeved on the outside of the input main shaft A5-2. Two second skeleton oil seals A4-3 are circumferentially arranged between the input shaft oil ring A5-3 and the high-speed gearbox main shaft A4-2, with a gap between them. Both second skeleton oil seals A4-3 are close to the high-speed gearbox planetary gears A5-2. 4-1, The end of the high-speed main shaft A4-2 away from the intermediate bearing seat A3-1 is coaxially fixed to the output bevel gear A4-7 via the large gear flange A4-6. The output bevel gear A4-7 meshes with the input bevel gear A4-8. The input bevel gear A4-8 is coaxially fixed to one end of the bevel gear input shaft A4-9 located inside the first housing A6-1. The bevel gear input shaft A4-9 is rotatably connected to the top of the first housing A6-1 via the sealing assembly A4-11. The top of the sealing assembly A4-11 is fixedly connected to the third power source via the radial motor mounting flange A4-10. The top of the bevel gear input shaft A4-9 is connected to the output end of the third power source.

[0031] In operation, the third power source transmits power to the sealing assembly A4-11 via the radial motor mounting flange A4-10. Through the bevel gear input shaft A4-9 and input bevel gear A4-8, the power is redirected and transmitted to the large gear flange A4-6 via meshing with the output bevel gear A4-7, ultimately driving the high-speed exhaust spindle A4-2 to rotate. The high-speed exhaust spindle drives multiple high-speed planetary gears A4-1, circumferentially spaced at its ends, to rotate synchronously. Two second skeleton oil seals A4-3 are installed between the input shaft oil ring A5-3 sleeved on the outside of the input spindle A5-2 and the high-speed exhaust spindle. A gap is left between the two skeleton oil seals to form a sealed oil chamber, allowing the high-speed exhaust oil passage to rotate independently. The power direction is reversed via bevel gear transmission. Simultaneously, the skeleton oil seals ensure the sealed guidance of the oil within the high-speed exhaust oil passage, preventing oil leakage.

[0032] The scheme is further optimized. The high-speed oil drain channel A4 includes multiple ninth channels opened on the outside of the input spindle A5-2, multiple tenth channels and multiple eleventh channels opened on the input shaft oil ring A5-3, multiple twelfth channels opened on the high-speed drain spindle A4-2, and a thirteenth channel opened on the high-speed drain planetary gear A4-1. Multiple oil outlets are also opened on the high-speed drain spindle A4-2, and the oil outlets are connected to the high-speed drain oil collection box A6. The tenth channels are located in the interval between the two second skeleton oil seals A4-3. The oil in the eighth flow channel enters the tenth flow channel through the ninth flow channel. Part of the oil enters the space between the high-speed discharge main shaft A4-2 and the input main shaft A5-2 through the eleventh flow channel, and then enters the high-speed discharge oil collection box A6. Another part of the oil flows sequentially through the gap between the two second skeleton oil seals A4-3, the twelfth flow channel, and the thirteenth flow channel, and then enters the high-speed discharge oil collection box A6 through the high-speed discharge planetary gear A4-1. Part of the oil in the twelfth flow channel enters the high-speed discharge oil collection box A6 through the oil outlet.

[0033] In operation, the oil in the eighth flow channel enters the tenth flow channel on the input shaft oil ring A5-3 via the ninth flow channel outside the input spindle A5-2. The tenth flow channel is located within the gap between the two second skeleton oil seals A4-3. Part of the oil enters the space between the high-speed discharge spindle A4-2 and the input spindle A5-2 via the eleventh flow channel, and then enters the high-speed discharge oil collection box A6. Another part of the oil flows sequentially through the gap between the two second skeleton oil seals, the twelfth flow channel on the high-speed discharge spindle, and the thirteenth flow channel on the high-speed discharge planetary gear A4-1 before entering the high-speed discharge oil collection box A6 via the high-speed discharge planetary gear. Part of the oil in the twelfth flow channel directly enters the high-speed discharge oil collection box A6 through the oil outlet on the high-speed discharge spindle. This achieves multi-path diversion of the oil in the high-speed discharge channel, ensuring that all the oil allocated to the high-speed discharge channel is ultimately collected by the high-speed discharge oil collection box, thus guaranteeing the integrity and accuracy of the high-speed discharge flow measurement.

[0034] Further optimization of the scheme: the oil passage A1 of the housing includes the fourteenth flow channel opened on the low-speed exhaust side bearing housing A1-3 and the fifteenth flow channel opened on the low-speed exhaust bearing housing oil ring A1-4. The fifteenth flow channel is located in the interval between the two first skeleton oil seals A2-3. The fifteenth flow channel is connected to the fourteenth flow channel. The fourteenth flow channel is connected to the vertical oil supply line A1-2. The vertical oil supply line A1-2 is connected to the horizontal oil supply line A1-1.

[0035] During use, the external pump station sends oil into the horizontal oil supply line A1-1, then through the vertical oil supply line A1-2 into the fourteenth flow channel on the low-speed discharge side bearing seat A1-3, and then through the fifteenth flow channel on the low-speed discharge bearing seat oil ring A1-4 into the interval between the two first skeleton oil seals A2-3. The fifteenth flow channel is connected to the fourteenth flow channel, realizing the smooth transition of oil from the stationary tank oil passage to the rotating low-speed discharge oil passage, ensuring that the oil can smoothly enter the internal oil passage of the rotating oil circuit unit from the external pump station without leakage.

[0036] In a further optimized design, the top end of the intermediate bearing housing A3-1 is connected to a first extension tube A3-2, and the top end of the first housing A6-1 is connected to a second extension tube A6-2.

[0037] In use, the first extension tube and the second extension tube serve as extension guide structures for the low-speed oil collection box A3 and the high-speed oil collection box A6, respectively, to facilitate the guidance of the oil collected in the oil collection box to the corresponding measuring cylinder below, thereby preventing the oil from splashing or mixing during the flow process and ensuring the accuracy and stability of the flow measurement.

[0038] The scheme is further optimized as follows: the first housing A6-1 is fixedly mounted on the base assembly B2; the first power source includes an electric spindle B5, which is connected to the input spindle A5-2 via an input shaft coupling A5-1; the second power source includes a spindle motor B1, whose output shaft is connected to the low-speed spindle A2-2 via a low-speed coupling A2-1; and the third power source includes a servo motor B4, whose output shaft is connected to the bevel gear input shaft A4-9. Both the spindle motor B1 and the electric spindle B5 are fixedly mounted on the base assembly B2, and all three motors are electrically connected to the speed control cabinet B6.

[0039] The electric spindle B5 drives the input spindle A5-2 to rotate via the input shaft coupling A5-1. The spindle motor B1 drives the low-speed spindle A2-2 to rotate via the low-speed gear coupling A2-1. The output shaft of the servo motor B4 is connected to the bevel gear input shaft A4-9 to drive the high-speed gear structure. All three motors are fixedly mounted on the base assembly B2 and electrically connected to the speed control cabinet B6. In use, the speed control cabinet B6 independently controls the three motors, assigning each level of rotating oil passage the corresponding target speed, thereby accurately reproducing the speed characteristics of the second-speed planetary transmission device under different driving conditions and realizing full-condition test verification of the lubrication circuit performance.

[0040] After startup, the speed control cabinet B6 sends independent speed commands to the electric spindle B5, spindle motor B1, and servo motor B4. Spindle motor B1 drives the low-speed spindle A2-2 to rotate via the low-speed coupling A2-1. The low-speed spindle drives the low-speed oil ring A2-7 and the low-speed planetary carrier A2-6 to rotate synchronously. The multiple low-speed planetary gears A2-5 arranged circumferentially on the low-speed planetary carrier rotate accordingly. The electric spindle B5 drives the input spindle A5-2 to rotate via the input shaft coupling A5-1. The input spindle drives the input shaft extension A5-4 to rotate synchronously. Servo motor B4 transmits power to the sealing assembly A4-11 via the radial motor mounting flange A4-10, and then to the bevel gear input shaft A4-9 and input... The meshing of bevel gear A4-8 and output bevel gear A4-7 directs power and transmits it to the large gear flange A4-6, ultimately driving the high-speed gearbox main shaft A4-2 to rotate. The high-speed gearbox main shaft drives the multiple high-speed gearbox planetary gears A4-1 arranged circumferentially at its ends to rotate synchronously. At the same time, the external pump station sends oil into the horizontal oil supply line A1-1, through the vertical oil supply line A1-2, into the fourteenth flow channel on the low-speed gearbox side bearing housing A1-3, then through the fifteenth flow channel on the low-speed gearbox bearing housing oil ring A1-4, into the gap between the two first skeleton oil seals A2-3. The oil then enters the first flow channel on the low-speed gearbox planetary carrier A2-6 located between the two first skeleton oil seals, and part of the oil enters the low-speed gearbox planetary carrier through the sixth flow channel. The oil flows through the seventh channel of wheel A2-5 and exits through the low-speed planetary gears before entering the low-speed discharge oil collection box A3. Another portion of the oil flows sequentially through the second channel on the low-speed discharge ring A2-7, the third channel on the outer wall of the low-speed discharge main shaft A2-2, and the coaxially opened fifth channel. It then flows through the second, sixth, and seventh channels in other directions, finally entering the low-speed discharge oil collection box A3 after passing through other low-speed planetary gears A2-5. Part of the oil enters the low-speed discharge oil collection box A3 through the extension shaft outlet on the input shaft extension A5-4. Part of the oil enters the low-speed discharge oil collection box A3 through the fifth channel of the low-speed discharge main shaft A2-2 and enters the coaxially opened eighth channel within the input main shaft A5-2. The eighth channel penetrates the input shaft extension A5-4. Part of the oil enters the remote outlet. The oil in the machine oil collection box A7 is partially discharged into the high-speed discharge oil collection box A6 through the near-end outlet on the input spindle A5-2. The remaining oil in the eighth flow channel enters the tenth flow channel on the input shaft oil ring A5-3 through the ninth flow channel on the outside of the input spindle. The tenth flow channel is located in the gap between the two second skeleton oil seals A4-3. Part of the oil enters the high-speed discharge spindle and the input spindle through the eleventh flow channel and then enters the high-speed discharge oil collection box. The other part of the oil flows sequentially through the gap between the two second skeleton oil seals, the twelfth flow channel on the high-speed discharge spindle, and the thirteenth flow channel on the high-speed discharge planetary gear, and then enters the high-speed discharge oil collection box through the high-speed discharge planetary gear. Part of the oil in the twelfth flow channel enters the high-speed discharge oil collection box directly through the oil outlet on the high-speed discharge spindle.During the rotation of each oil channel, the test personnel observed the flow of the internal oil in real time through the observation windows on the low-speed oil collection box, the high-speed oil collection box, and the transparently set remote motor oil collection box. The oil collected in each collection box flowed into the corresponding measuring cylinder below through an independent oil pipe from the bottom outlet. The flow rate of the oil collected in the low-speed oil collection box, the high-speed oil collection box, and the remote motor oil collection box was measured respectively.

[0041] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 invention, and are not intended to 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 invention.

[0042] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A visual test device for the lubrication oil circuit of a transmission device with integrated flow monitoring, characterized in that, include: The low-speed discharge structure has an internal low-speed discharge oil passage (A2) that is connected to the housing oil passage (A1). The low-speed discharge oil passage (A2) is also connected to the low-speed discharge oil collection box (A3) of the low-speed discharge structure. The low-speed discharge oil collection box (A3) has an observation window and an oil outlet at the bottom. Below the oil outlet, there is a measuring cylinder for collecting the oil in the low-speed discharge oil collection box (A3). An input shaft structure is disposed on one side of the low-speed discharge structure. An input shaft oil passage (A5) is provided inside the input shaft structure. The input shaft oil passage (A5) is connected to the low-speed discharge oil passage (A2). The input shaft oil passage (A5) is connected to the high-speed discharge oil collection box (A6) and the remote motor oil collection box (A7) of the input shaft structure. An oil outlet is provided at the bottom end of the high-speed discharge oil collection box (A6) and the remote motor oil collection box (A7). A measuring cylinder for collecting oil in the high-speed discharge oil collection box (A6) and a measuring cylinder for collecting oil in the remote motor oil collection box (A7) are respectively provided below the two oil outlets. The remote motor oil collection box (A7) is transparent. An observation window is provided on the high-speed discharge oil collection box (A6). The high-speed oil discharge structure has a high-speed oil discharge channel (A4) inside, which is connected to the input shaft oil channel (A5) and the high-speed oil discharge collection box (A6); The rotational speeds of the low-speed feed structure, the input shaft structure, and the high-speed feed structure are respectively regulated.

2. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 1, characterized in that, The low-speed exhaust structure includes a low-speed exhaust side bearing housing (A1-3), within which a low-speed exhaust bearing housing oil ring (A1-4) is disposed. The low-speed exhaust bearing housing oil ring (A1-4) is located on one side of the low-speed exhaust side bearing housing (A1-3). An intermediate bearing housing (A3-1) is coaxially fixed to the side of the low-speed exhaust side bearing housing (A1-3) where the low-speed exhaust bearing housing oil ring (A1-4) is located. The intermediate bearing housing (A3-1) and the low-speed exhaust side bearing housing (A1-3) together form the low-speed exhaust oil collection box (A3). A low-speed exhaust main shaft (A2-2) is rotatably connected to the low-speed exhaust side bearing housing (A1-3), and one end of the low-speed exhaust main shaft (A2-2) extends into the low-speed exhaust bearing housing. A low-speed oil discharge ring (A2-7) is coaxially connected inside the oil ring (A1-4). The other end of the low-speed oil discharge main shaft (A2-2) extends out of the low-speed oil discharge side bearing seat (A1-3) and is connected to a second power source. A low-speed planetary carrier (A2-6) is provided on the outside of the low-speed oil discharge ring (A2-7). Multiple low-speed planetary gears (A2-5) are circumferentially spaced on the low-speed planetary carrier (A2-6). The low-speed planetary carrier (A2-6) is coaxially fixed to the low-speed main shaft (A2-2). Two first skeleton oil seals (A2-3) are circumferentially provided between the low-speed planetary carrier (A2-6) and the low-speed bearing seat oil ring (A1-4), with a gap between the two first skeleton oil seals (A2-3).

3. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 2, characterized in that, The low-speed oil discharge passage (A2) includes multiple first flow channels and multiple sixth flow channels opened on the low-speed planetary carrier (A2-6), multiple second flow channels opened on the low-speed oil discharge ring (A2-7), multiple third flow channels opened on the outer wall of the low-speed main shaft (A2-2), a fifth flow channel coaxially opened at one end of the low-speed main shaft (A2-2), and a seventh flow channel opened on the low-speed planetary gear (A2-5). The first flow channels are located within the interval between the two first skeleton oil seals (A2-3). The oil enters the first flow channel. Part of the oil flows through one of the sixth flow channels into one of the seventh flow channels, and then through one of the low-speed planetary gears (A2-5) into the low-speed oil collection box (A3). The other part of the oil flows sequentially through the second, third and fifth flow channels, and then into other third flow channels. It then flows sequentially through other second flow channels, other sixth flow channels, and other seventh flow channels, and finally through other low-speed planetary gears (A2-5) into the low-speed oil collection box (A3).

4. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 3, characterized in that, The input shaft structure includes a first housing (A6-1), an end bearing housing, and a remote motor oil collection box (A7) that are coaxially fixed together in sequence along a direction away from the intermediate bearing housing (A3-1). The high-speed oil collection box (A6) is located inside the first housing (A6-1). The input spindle (A5-2) is coaxially rotatably connected to the end bearing housing. One end of the input spindle (A5-2) extends out of the remote motor oil collection box (A7), and the other end of the input spindle (A5-2) is fed into the first housing (A6-1). An input shaft extension (A5-4) is coaxially fixed within a housing (A6-1). The input shaft extension (A5-4) is coaxially rotatably connected to the intermediate bearing seat (A3-1). The input shaft extension (A5-4) is rotatably connected to the low-speed main shaft (A2-2), and the connection between the input shaft extension (A5-4) and the low-speed main shaft (A2-2) is sealed. The end of the input main shaft (A5-2) extending out of the remote motor oil collection box (A7) is connected to a first power source.

5. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 4, characterized in that, The input shaft oil passage (A5) includes an eighth flow channel coaxially formed within the input main shaft (A5-2). The eighth flow channel passes through the input shaft extension (A5-4) and communicates with the fifth flow channel. The input shaft oil passage (A5) has a distal outlet communicating with the distal motor oil collection box (A7) and a proximal outlet communicating with the high-speed discharge oil collection box (A6). The input shaft extension (A5-4) has an extension shaft outlet communicating with the low-speed discharge oil collection box (A3). The oil enters the eighth channel through the fifth channel. Some of the oil enters the low-speed oil collection box (A3) through the extension shaft outlet, some of the oil enters the remote motor oil collection box (A7) through the far end outlet, and some of the oil flows directly into the high-speed oil collection box (A6) through the near end outlet.

6. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 5, characterized in that, The high-speed gearbox structure includes a high-speed gearbox main shaft (A4-2) coaxially sleeved on the outside of the input main shaft (A5-2). The high-speed gearbox main shaft (A4-2) and the input main shaft (A5-2) are rotatably connected by bearings. Multiple high-speed gearbox planetary gears (A4-1) are circumferentially and evenly spaced at one end of the high-speed gearbox main shaft (A4-2) near the intermediate bearing seat (A3-1). An input shaft oil ring (A5-3) is sleeved on the outside of the input main shaft (A5-2). Two second skeleton oil seals (A4-3) are circumferentially arranged between the input shaft oil ring (A5-3) and the high-speed gearbox main shaft (A4-2), with a gap between them. Both second skeleton oil seals (A4-3) are close to the high-speed gearbox planetary gears (A4-1). 1) The high-speed main shaft (A4-2) away from the intermediate bearing seat (A3-1) is coaxially fixed to an output bevel gear (A4-7) via a large gear flange (A4-6). The output bevel gear (A4-7) meshes with an input bevel gear (A4-8). The input bevel gear (A4-8) is coaxially fixed to one end of the bevel gear input shaft (A4-9) located inside the first housing (A6-1). The bevel gear input shaft (A4-9) is rotatably connected to the top of the first housing (A6-1) via a sealing assembly (A4-11). The top of the sealing assembly (A4-11) is fixedly connected to a third power source via a radial motor mounting flange (A4-10). The top of the bevel gear input shaft (A4-9) is connected to the output end of the third power source.

7. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 6, characterized in that, The high-speed oil drain channel (A4) includes multiple ninth channels opened on the outside of the input spindle (A5-2), multiple tenth channels and multiple eleventh channels opened on the input shaft oil ring (A5-3), multiple twelfth channels opened on the high-speed drain spindle (A4-2), and a thirteenth channel opened on the high-speed drain planetary gear (A4-1). The high-speed drain spindle (A4-2) is also provided with multiple oil outlets, which are connected to the high-speed drain oil collection box (A6). The tenth channels are located in the interval between the two second skeleton oil seals (A4-3). The oil in the eighth flow channel enters the tenth flow channel through the ninth flow channel. Part of the oil enters the space between the high-speed discharge main shaft (A4-2) and the input main shaft (A5-2) through the eleventh flow channel, and then enters the high-speed discharge oil collection box (A6). Another part of the oil flows sequentially through the gap between the two second skeleton oil seals (A4-3), the twelfth flow channel, and the thirteenth flow channel, and then enters the high-speed discharge oil collection box (A6) through the high-speed discharge planetary gear (A4-1). Part of the oil in the twelfth flow channel enters the high-speed discharge oil collection box (A6) through the oil outlet.

8. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 3, characterized in that, The housing oil passage (A1) includes a fourteenth flow channel opened on the low-speed exhaust side bearing housing (A1-3) and a fifteenth flow channel opened on the low-speed exhaust bearing housing oil ring (A1-4). The fifteenth flow channel is located within the interval between the two first skeleton oil seals (A2-3). The fifteenth flow channel is connected to the fourteenth flow channel. The fourteenth flow channel is connected to a vertical oil supply line (A1-2). The vertical oil supply line (A1-2) is connected to a horizontal oil supply line (A1-1).

9. The integrated flow monitoring transmission device lubrication circuit visualization test device according to claim 4, characterized in that, The top end of the intermediate bearing housing (A3-1) is connected to a first extension tube (A3-2), and the top end of the first housing (A6-1) is connected to a second extension tube (A6-2).

10. A visual test device for lubrication circuit of a transmission device with integrated flow monitoring according to claim 6, characterized in that, The first housing (A6-1) is fixedly mounted on the base assembly (B2). The first power source includes an electric spindle (B5), which is connected to the input spindle (A5-2) via an input shaft coupling (A5-1). The second power source includes a spindle motor (B1), whose output shaft is connected to the low-speed spindle (A2-2) via a low-speed coupling (A2-1). The third power source includes a servo motor (B4), whose output shaft is connected to the bevel gear input shaft (A4-9). The spindle motor (B1) and the electric spindle (B5) are both fixedly mounted on the base assembly (B2), and the spindle motor (B1), the electric spindle (B5), and the servo motor (B4) are all electrically connected to the speed control cabinet (B6).

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