High-precision automobile transmission shaft intermediate support assembly based on new energy automobile and method

Abstract

The invention discloses a high-precision automobile transmission shaft middle support assembly based on a new energy automobile and a method, and relates to the technical field of new energy automobile transmission, the high-precision automobile transmission shaft middle support assembly comprises two shaft seats and a transmission shaft, the transmission shaft is rotationally installed in the shaft seats, and an oil injection mechanism is arranged above the shaft seats and used for automatically injecting lubricating grease into the shaft seats; and the oil injection mechanism comprises a shell unit and an injection unit, the injection unit is arranged in the shell and comprises bases which are symmetrically and fixedly installed in the shell in a staggered mode, an oil drainage barrel is installed in the shell through a connecting port, and through the integrated oil injection structure, timing automatic lubrication of the shaft seat is achieved. Under the control of the time sequence module, the driving assembly pushes the push rod to extrude lubricating grease in the oil drainage barrel, so that the lubricating grease enters the shaft seat through the connecting port, the connecting pipe and the oil injection pipe in sequence. According to the design, the precision and timeliness of lubrication are remarkably improved, the device is suitable for high-load and high-rotating-speed working conditions of new energy automobiles, and lubricating grease is rapidly injected.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle transmission technology, specifically to a high-precision automotive transmission shaft intermediate support assembly and method for new energy vehicles. Background Technology

[0002] New energy vehicles, as the core direction of the automotive industry's green transformation, are leading a transportation revolution with their advantages of zero emissions, intelligence, and high efficiency. Their power systems abandon traditional internal combustion engines, instead adopting clean energy sources such as electricity and hydrogen.

[0003] According to the patent titled "A Transmission Shaft Support Bearing Bracket Assembly Based on New Energy Vehicles" (Patent Publication No.: CN210554186U, Patent Publication Date: 2020-05-19), it includes a main frame, a positioning plate, a mounting bracket, rollers, and an inner ring. The positioning plate is fixedly installed on the lower outer surface of the main frame, and a force-relieving mechanism is fixedly installed on one side of the outer surface of the main frame near the front end. An anti-fouling mechanism is provided on the other side of the outer surface of the main frame near the front end. The anti-fouling mechanism includes a baffle plate and a base, a hinge on one side of the outer surface of the baffle plate, a sleeve on the front outer surface of the baffle plate and the front outer surface of the base, a storage groove inside the sleeve, and an extension rod movably connected to the inner surface of the storage groove. This allows the support bearing to withstand radial runout while expanding the range of axial runout that the main frame can withstand, thus extending the service life of the support bearing. It can also isolate the external environment from the inside of the bearing to a certain extent, preventing mud from entering the inside of the support bearing.

[0004] Based on the aforementioned existing technologies, current high-precision automotive driveshaft intermediate support assemblies and methods for new energy vehicles still have the following problems: traditional support bearings use a one-time filling and sealing design for grease. Under the high-load and high-speed conditions of new energy vehicles, the grease will gradually age, separate, evaporate, and become contaminated, and its effective lubrication life is far less than the vehicle's design life. Under continuous high speed, frequent rapid acceleration and deceleration, high torque output, or extreme temperature environments, grease consumption and degradation accelerate, and manual refilling is required after grease consumption. Therefore, this invention provides a high-precision automotive driveshaft intermediate support assembly and method for new energy vehicles. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-precision automotive driveshaft intermediate support assembly and method for new energy vehicles. It solves the problem that traditional support bearings use a one-time grease-filled sealing design, where the grease is prone to rapid aging and consumption under the high load, high speed, and frequent load changes of new energy vehicles. The effective lifespan of the grease is far shorter than the vehicle's design life, and manual refilling is required after grease failure.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision automotive driveshaft intermediate support assembly for new energy vehicles, comprising two bearing seats and a driveshaft, wherein the driveshaft is rotatably mounted inside the bearing seats, and an oiling mechanism is provided above the bearing seats for automatically adding grease to the bearing seats, the oiling mechanism comprising: The housing unit is located above the bearing seat and is fixedly mounted on the bearing seat by bolts. The injection unit, located inside the housing, includes a base symmetrically and alternately fixed inside the housing. An oil drain cylinder is installed inside the housing via a connection port. The oil drain cylinder is fixedly installed inside the base via a fixing component. One end of the oil drain cylinder is threaded and rotatably installed inside the connection port. An oil injection pipe is fixedly installed at one end of the connection port via a connecting pipe. The oil injection pipe passes through the housing and is inserted into the interior of the bearing seat. A drive component drives a pushing component to allow the grease inside the oil drain cylinder to enter the interior of the bearing seat through the connecting pipe and the oil injection pipe, achieving automatic filling. The drive component is controlled by a timing module on the vehicle.

[0007] Preferably, a slot is provided on the top of the outer casing, and a plug plate is slidably inserted into the slot. A fixing knob is threadedly installed on the top right side of the outer casing, and the bottom thread of the fixing knob rotates into the interior of the plug plate to fix the position of the plug plate. The quick disassembly and assembly of the plug plate enables quick inspection of the interior of the outer casing.

[0008] Preferably, two sealing gaskets are symmetrically installed inside the slot to improve the sealing performance of the insert plate inside the slot.

[0009] Preferably, the end of the connecting pipe away from the oil injection pipe passes through the base and is fixedly connected to the connection port. The oil drain cylinder is installed into the connection port by rotating one end of the oil drain cylinder through a thread, which enables quick disassembly and assembly of the oil drain cylinder and facilitates the replenishment of lubricating grease inside the oil drain cylinder.

[0010] Preferably, the fixing assembly includes two fixing frames fixedly installed on the top of the base. Two limiting rods are slidably installed inside the top plate of the fixing frame, and a threaded knob is threadedly installed through the middle of the top plate of the fixing frame. An arc-shaped pressure plate is rotatably installed at the bottom end of the threaded knob, and the bottom end of the limiting rod is fixedly connected to the first rubber pad. Three supporting arc seats are fixedly installed inside the base. By rotating the threaded knob, the arc-shaped pressure plate is moved down, so that the arc-shaped pressure plate and the supporting arc seats fix the oil drain cylinder and prevent its displacement.

[0011] Preferably, a first rubber pad is fixedly installed at the bottom of the arc-shaped pressure plate, and a second rubber pad is fixedly installed above the supporting arc seat. The first and second rubber pads prevent the arc-shaped pressure plate and the supporting arc seat from damaging the oil drain cylinder.

[0012] Preferably, the drive assembly includes a mounting bracket that is bolted to the inside of the housing, a motor is fixedly mounted on the top center of the mounting bracket, and the output end of the motor passes through the mounting bracket and is fixedly mounted with a gear.

[0013] Preferably, the drive assembly further includes a movable track fixedly installed at the bottom of the mounting frame, and limit slides are fixedly installed on both the front and rear sides of the movable track by bolts, and racks are symmetrically and alternately slidably installed on the two limit slides, the gears and racks are meshed together, and the outer end of the rack is fixedly installed with a connecting seat by a cross screw.

[0014] Preferably, the pushing assembly includes two T-shaped sliders slidably installed inside the moving track. The end of the connecting seat away from the rack is fixedly connected to the T-shaped sliders through a rectangular groove above the moving track. A fixing block is fixedly installed at the bottom of the T-shaped slider, and a push rod is fixedly installed on one side of the fixing block. One end of the push plate of the push rod slides into the oil drain cylinder to squeeze out the grease inside the oil drain cylinder.

[0015] This invention also discloses an operation method for a high-precision automotive driveshaft intermediate support assembly based on new energy vehicles, including the following steps: S1: Fill the oil drain cylinder with grease and thread one end of the oil drain cylinder to the connection port; S2: The driving component drives the pushing component, causing the push rod of the pushing component to extend into the oil drain cylinder; S3: The push rod squeezes the grease in the oil drain cylinder, so that the grease passes through the connection port, the connection pipe and the oil injection pipe in sequence and enters the interior of the bearing seat.

[0016] This invention provides a high-precision automotive driveshaft intermediate support assembly and method for new energy vehicles. Compared with the prior art, it has the following advantages: 1. This high-precision automotive driveshaft intermediate support assembly and method for new energy vehicles achieves timed automatic lubrication of the shaft seat through an integrated oil injection structure. Under the control of the timing module, the drive component pushes the push rod to squeeze the grease in the oil drain cylinder, allowing it to enter the shaft seat sequentially through the connection port, connecting pipe, and oil injection pipe. This design significantly improves the accuracy and timeliness of lubrication, making it suitable for the high-load, high-speed operating conditions of new energy vehicles and enabling rapid grease filling.

[0017] 2. This high-precision automotive driveshaft intermediate support assembly and method based on new energy vehicles achieves rapid maintenance and excellent sealing of the lubrication mechanism through a detachable insert plate and sealing gasket design. The insert plate is fixed by a fixing knob, making disassembly and assembly convenient; the sealing gasket enhances the sealing performance of the slot and prevents external contaminants from entering. This structure significantly reduces maintenance difficulty and time costs while ensuring reliable system sealing. 3. This high-precision automotive driveshaft intermediate support assembly and method based on new energy vehicles achieves stable fixation of the oil drain cylinder through the cooperation of an arc-shaped pressure plate and a supporting arc seat. Rotating the threaded knob can press down the arc-shaped pressure plate, which, together with the supporting arc seat at the bottom, clamps the oil drain cylinder; the first and second rubber pads play a buffering and damage prevention role. This structure ensures stability during the oil filling process and avoids displacement or damage caused by vibration. Attached Figure Description

[0018] Figure 1 This is a right-side perspective view of the present invention. Figure 2 This is a three-dimensional structural diagram of the present invention. Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 4 This is a cross-sectional perspective view of the present invention; Figure 5 This is a split frontal perspective view of the injection unit of the present invention; Figure 6 This is a right-side perspective view of the injection unit of the present invention. Figure 7 This is a top-view perspective view of the driving component of the present invention. Figure 8 This is a partial bottom-view perspective view of the driving component of the present invention; Figure 9 This is a partially split top-view three-dimensional structural diagram of the driving component of the present invention; Figure 10 This is a partially split bottom-view stereoscopic structural diagram of the driving component of the present invention.

[0019] In the diagram: 11. Shaft seat; 12. Drive shaft; 2. Oil injection mechanism; 21. Housing unit; 211. Outer shell; 212. Slot; 213. Insert plate; 214. Fixing knob; 215. Sealing gasket; 22. Injection unit; 221. Base; 222. Connection port; 223. Connecting pipe; 224. Oil injection pipe; 225. Oil drain cylinder; 3. Fixing assembly; 31. Fixing bracket; 32. Limiting rod; 33. Threaded knob; 34. Arc-shaped pressure plate; 35. First rubber pad; 36. Support arc seat; 37. Second rubber pad; 4. Drive assembly; 41. Mounting bracket; 42. Motor; 43. Gear; 44. Moving track; 45. Limiting slide; 46. Rack; 47. Connecting seat; 5. Push assembly; 51. T-shaped slider; 52. Fixing block; 53. Push rod. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-10 The present invention provides a technical solution: A high-precision automotive driveshaft intermediate support assembly and method based on new energy vehicles includes two bearing seats 11 and a driveshaft 12, with the driveshaft 12 rotatably mounted inside the bearing seats 11. An oil injection mechanism 2 is provided above the bearing seats 11 to automatically add grease to the bearing seats 11. The oil injection mechanism 2 includes: The housing unit 21 is disposed above the bearing seat 11 and is fixedly mounted on the bearing seat 11 by bolts; The injection unit 22 is located inside the housing 211 and includes a base 221 that is symmetrically and alternately fixed inside the housing 211. An oil drain cylinder 225 is installed inside the housing 211 through a connection port 222. The oil drain cylinder 225 is fixedly installed inside the base 221 through a fixing component 3. One end of the oil drain cylinder 225 is threadedly rotatably installed inside the connection port 222. An oil injection pipe 224 is fixedly installed at one end of the connection port 222 through a connecting pipe 223. The oil injection pipe 224 passes through the housing 211 and is inserted into the shaft seat 11. The driving component 4 drives the pushing component 5 to make the grease inside the oil drain cylinder 225 enter the shaft seat 11 through the connecting pipe 223 and the oil injection pipe 224, thereby realizing automatic filling. The driving component 4 is controlled by a timing module on the vehicle.

[0022] In this embodiment, a slot 212 is provided on the upper part of the outer casing 211, and a plug plate 213 is slidably inserted into the slot 212. A fixing knob 214 is threadedly installed on the top right side of the outer casing 211, and the bottom end of the fixing knob 214 is threaded into the interior of the plug plate 213 to fix the position of the plug plate 213. The quick disassembly and assembly of the plug plate 213 enables quick inspection and maintenance of the interior of the outer casing 211.

[0023] By setting a slot 212 and a plug plate 213 on the top of the housing 211 and using a fixing knob 214 to achieve quick disassembly and assembly, it is more convenient to inspect and maintain the injection unit 22 and drive assembly 4 inside the housing 211 without disassembling the overall structure, which greatly improves maintenance efficiency.

[0024] In this embodiment, two sealing gaskets 215 are symmetrically installed inside the slot 212 to improve the sealing performance of the insert plate 213 when it is inserted into the slot 212.

[0025] The sealing gasket 215 is made of fluororubber FKM, which is resistant to high temperatures and grease, ensuring a long-term sealing effect between the insert plate 213 and the slot 212. Two sealing gaskets 215 are symmetrically installed inside the slot 212, which effectively improves the sealing performance after the insert plate 213 is inserted, preventing external dust, moisture and other contaminants from entering the lubrication mechanism 2, and ensuring the cleanliness and long-term stable operation of the lubrication system.

[0026] In this embodiment, the end of the connecting pipe 223 away from the oil filling pipe 224 passes through the base 221 and is fixedly connected to the connecting port 222. The oil drain cylinder 225 is installed into the interior of the connecting port 222 by threading one end, so as to realize quick disassembly and assembly of the oil drain cylinder 225 and facilitate the replenishment of lubricating grease inside the oil drain cylinder 225.

[0027] By passing one end of the connecting pipe 223 through the base 221 and fixing it to the connection port 222, the oil drain cylinder 225 can be threaded into the connection port 222, realizing the quick disassembly and assembly of the oil drain cylinder 225, facilitating the regular replenishment or replacement of lubricating grease, and improving the maintainability and ease of use of the system.

[0028] In this embodiment, the fixing component 3 includes two fixing frames 31 fixedly installed on the top of the base 221. Two limiting rods 32 are slidably installed inside the top plate of the fixing frame 31, and a threaded knob 33 is threadedly installed through the middle of the top plate of the fixing frame 31. An arc-shaped pressure plate 34 is rotatably installed at the bottom end of the threaded knob 33, and the bottom end of the limiting rod 32 is fixedly connected to the first rubber pad 35. Three supporting arc seats 36 are fixedly installed inside the base 221. By rotating the threaded knob 33, the arc-shaped pressure plate 34 is moved down, so that the arc-shaped pressure plate 34 and the supporting arc seats 36 fix the oil drain cylinder 225 and prevent it from shifting.

[0029] By cooperating with the arc-shaped pressure plate 34 in the fixing component 3 and the supporting arc seat 36, and by adjusting the clamping force with the threaded knob 33, the oil drain cylinder 225 is firmly fixed, preventing it from shifting due to vibration during vehicle operation and ensuring a stable and reliable oil filling process.

[0030] In this embodiment, a first rubber pad 35 is fixedly installed at the bottom of the arc-shaped pressure plate 34, and a second rubber pad 37 is fixedly installed above the supporting arc seat 36. The first rubber pad 35 and the second rubber pad 37 prevent the arc-shaped pressure plate 34 and the supporting arc seat 36 from damaging the oil drain cylinder 225.

[0031] A first rubber pad 35 and a second rubber pad 37 are respectively provided at the bottom of the arc-shaped pressure plate 34 and above the support arc seat 36, which effectively buffers the clamping force and avoids causing indentations or damage to the surface of the oil drain cylinder 225.

[0032] In this embodiment, the drive assembly 4 includes a mounting bracket 41 that is fixedly installed inside the housing 211 by bolts. A motor 42 is fixedly installed at the top center of the mounting bracket 41, and the output end of the motor 42 passes through the mounting bracket 41 and is fixedly installed with a gear 43.

[0033] Motor 42 is a DC geared motor, model JGA25-370, with a self-locking function. It drives the racks 46 on both sides through gear 43 to achieve synchronous reverse movement.

[0034] The motor 42 drives the gear 43 to drive the racks 46 on both sides to move synchronously. The structure is compact and the transmission is smooth, which realizes the precise advancement of the push rod 53 and ensures that the lubricating grease is injected into the bearing seat 11 as needed.

[0035] In this embodiment, the drive assembly 4 further includes a movable track 44 fixedly installed at the bottom of the mounting bracket 41, and the front and rear sides of the movable track 44 are fixedly installed with limit slides 45 by bolts, and racks 46 are symmetrically and alternately slidably installed on the two limit slides 45. The gears 43 and racks 46 are meshed and installed, and the outer end of the racks 46 is fixedly installed with connecting seats 47 by cross screws.

[0036] In this embodiment, the pushing component 5 includes two T-shaped sliders 51 that are slidably installed inside the moving track 44. The end of the connecting seat 47 away from the rack 46 is fixedly connected to the T-shaped sliders 51 through the rectangular groove above the moving track 44. A fixing block 52 is fixedly installed at the bottom of the T-shaped sliders 51, and a push rod 53 is fixedly installed on one side of the fixing block 52. One end of the push plate of the push rod 53 slides into the oil drain cylinder 225 to squeeze out the grease inside the oil drain cylinder 225.

[0037] The T-shaped slider 51 slides within the moving track 44, driving the push rod 53 to move linearly. The structure is simple and has good guidance, ensuring the accuracy and repeatability of the oil injection action.

[0038] This invention also discloses an operation method for a high-precision automotive driveshaft intermediate support assembly based on new energy vehicles, including the following steps: S1: Load the grease into the drain cylinder 225 and thread one end of the drain cylinder 225 to the connection port 222; S2: Drive the push component 5 through the drive component 4, so that the push rod 53 of the push component 5 extends into the oil drain cylinder 225; S3: Push rod 53 squeezes the grease in the oil drain cylinder 225, so that the grease enters the shaft seat 11 through the connection port 222, the connection pipe 223 and the oil injection pipe 224 in sequence.

[0039] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0040] During operation, first, fill the inside of the drain cylinder 225 with grease, rotate the fixing knob 214 so that its bottom end moves out of the threaded hole on the insert plate 213, pull out the insert plate 213, put the drain cylinder 225 into the inside of the base 221, thread one end of the drain cylinder 225 into the inside of the connection port 222, rotate the threaded knob 33 to move it down, so that the arc-shaped pressure plate 34 and the support arc seat 36 fix the drain cylinder 225. Then, the motor 42 drives the gear 43 to rotate, and the gear 43 drives the two racks 46 to move synchronously in opposite directions. The two racks 46 drive the connecting seat 47 and the T-shaped slider 51 to move synchronously. The T-shaped slider 51 drives the push rod 53 to move synchronously through the fixed block 52. The push plate end of the push rod 53 enters the interior of the oil drain cylinder 225, squeezing the grease inside the oil drain cylinder 225. The grease enters the interior of the connecting pipe 223 through the connecting port 222, and enters the interior of the shaft seat 11 through the oil injection pipe 224.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision automotive driveshaft intermediate support assembly based on new energy vehicles, comprising two bearing seats (11) and a driveshaft (12), wherein the driveshaft (12) is rotatably mounted inside the bearing seats (11), characterized in that: An oiling mechanism (2) is provided above the bearing seat (11) to automatically add grease to the bearing seat (11). The oiling mechanism (2) includes: The housing unit (21) is located above the bearing seat (11) and is fixedly mounted on the bearing seat (11) by bolts. The injection unit (22) is located inside the housing (211) and includes a base (221) that is symmetrically and interlockedly fixed inside the housing (211). An oil drain cylinder (225) is installed inside the housing (211) through a connection port (222). The oil drain cylinder (225) is fixedly installed inside the base (221) through a fixing component (3). One end of the oil drain cylinder (225) is threaded and rotated inside the connection port (222). One end of the connection port (222) is fixedly installed with an oil injection pipe (224) through a connecting pipe (223). The oil injection pipe (224) passes through the housing (211) and is inserted into the shaft seat (11). The driving component (4) drives the pushing component (5) to make the grease inside the oil drain cylinder (225) enter the shaft seat (11) through the connecting pipe (223) and the oil injection pipe (224) to achieve automatic filling. The driving component (4) is controlled by the timing module on the vehicle.

2. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 1, characterized in that: The outer casing (211) has a slot (212) on its upper part, and a plug plate (213) is slidably inserted into the slot (212). A fixing knob (214) is threadedly installed on the top right side of the outer casing (211), and the bottom thread of the fixing knob (214) is threaded into the plug plate (213) to fix the position of the plug plate (213). The quick disassembly and assembly of the plug plate (213) enables quick inspection of the inside of the outer casing (211).

3. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 2, characterized in that: Two sealing gaskets (215) are symmetrically installed inside the slot (212) to improve the sealing of the insert plate (213) when it is inserted into the slot (212).

4. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 1, characterized in that: The end of the connecting pipe (223) away from the oil injection pipe (224) passes through the base (221) and is fixedly connected to the connecting port (222). The oil drain cylinder (225) is installed into the interior of the connecting port (222) by threaded rotation at one end, so as to realize quick disassembly and assembly of the oil drain cylinder (225) and facilitate the replenishment of lubricating grease inside the oil drain cylinder (225).

5. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 1, characterized in that: The fixing component (3) includes two fixing frames (31) fixedly installed on the top of the base (221). Two limiting rods (32) are slidably installed inside the top plate of the fixing frame (31). A threaded knob (33) is threadedly installed in the middle of the top plate of the fixing frame (31). An arc-shaped pressure plate (34) is rotatably installed at the bottom end of the threaded knob (33). The bottom end of the limiting rod (32) is fixedly connected to the first rubber pad (35). Three supporting arc seats (36) are fixedly installed inside the base (221). By rotating the threaded knob (33), the arc-shaped pressure plate (34) is moved down, so that the arc-shaped pressure plate (34) and the supporting arc seats (36) fix the oil drain cylinder (225) to prevent it from shifting.

6. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 5, characterized in that: The bottom of the arc-shaped pressure plate (34) is fixedly installed with a first rubber pad (35), and the top of the supporting arc seat (36) is fixedly installed with a second rubber pad (37). The first rubber pad (35) and the second rubber pad (37) prevent the arc-shaped pressure plate (34) and the supporting arc seat (36) from damaging the oil drain cylinder (225).

7. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 1, characterized in that: The drive assembly (4) includes a mounting bracket (41) that is fixedly mounted inside the housing (211) by bolts. A motor (42) is fixedly mounted on the top middle part of the mounting bracket (41), and the output end of the motor (42) passes through the mounting bracket (41) and is fixedly mounted with a gear (43).

8. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 7, characterized in that: The drive assembly (4) also includes a movable track (44) fixedly installed at the bottom of the mounting bracket (41), and the front and rear sides of the movable track (44) are fixedly installed with limit slides (45) by bolts, and racks (46) are symmetrically and alternately slidably installed on the two limit slides (45), the gears (43) and racks (46) are meshed, and the outer end of the rack (46) is fixedly installed with a connecting seat (47) by a cross screw.

9. The high-precision automotive driveshaft intermediate support assembly based on new energy vehicles according to claim 8, characterized in that: The pushing assembly (5) includes two T-shaped sliders (51) slidably installed inside the moving track (44). The end of the connecting seat (47) away from the rack (46) is fixedly connected to the T-shaped sliders (51) through the rectangular groove above the moving track (44). A fixing block (52) is fixedly installed at the bottom of the T-shaped sliders (51), and a push rod (53) is fixedly installed on one side of the fixing block (52). One end of the push plate of the push rod (53) slides into the oil drain cylinder (225) to squeeze out the grease inside the oil drain cylinder (225).

10. A high-precision automotive driveshaft intermediate support assembly for new energy vehicles, employing the operating method of the high-precision automotive driveshaft intermediate support assembly for new energy vehicles as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Load the grease into the drain cylinder (225) and thread one end of the drain cylinder (225) to the connection port (222). S2: Drive the push assembly (5) through the drive assembly (4) so ​​that the push rod (53) of the push assembly (5) extends into the oil drain cylinder (225); S3: The push rod (53) squeezes the grease in the oil drain cylinder (225) so that the grease passes through the connection port (222), the connection pipe (223) and the oil injection pipe (224) in sequence and enters the interior of the bearing seat (11).

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