Self-lubricating door moving system and control method thereof

Abstract

The application relates to a self-lubricating door moving system and a control method thereof, and relates to the technical field of door moving equipment. The system comprises a rack, a suspension mechanism for mounting a door on the rack, and a driving mechanism for driving the door to move with the suspension mechanism. The system further comprises a lubricating mechanism mounted on the rack and capable of automatically lubricating the driving mechanism when the driving mechanism is working. The lubricating mechanism comprises an oil storage tank mounted on the rack, a delivery assembly mounted on the oil storage tank and used for delivering lubricating oil to the driving mechanism, a piston plate slidably mounted in the oil storage tank and used for delivering lubricating oil to the delivery assembly, a threaded rod mounted in the oil storage tank and used for driving the piston plate to move, and a starting assembly mounted on the rack and used for driving the threaded rod to rotate. The starting assembly is matched with the suspension mechanism to drive the threaded rod to rotate when the driving mechanism is working. The application has the effect of automatically adding lubricating oil to the worm gear and worm, thereby guaranteeing the timeliness of lubrication.

Description

Technical Field

[0001] This invention relates to the field of sliding door equipment technology, and in particular to a self-lubricating sliding door system and its control method. Background Technology

[0002] In the field of automated opening and closing equipment such as industrial sliding doors, the requirements for the quietness, stability and maintenance-free operation of the door are gradually increasing. Worm gear transmission, with its self-locking, large reduction ratio and smooth operation, has become the mainstream power transmission structure for various automated sliding doors and is widely applicable to the opening and closing conditions of sliding doors.

[0003] Most existing automated sliding doors use a drive motor in conjunction with a worm gear reducer as the power output component. The reducer is connected to a pulley transmission assembly at the end. Through the cooperation of the pulley and the synchronous belt, the door body is driven to make linear translational motion along the guide rail. The overall structure relies on the worm gear to realize power transmission and reverse locking, and relies on the pulley assembly to complete power transmission and door traction. This is a common electromechanical integrated sliding door drive structure on the market.

[0004] In the above structure, the worm gear meshing pair mainly relies on sliding friction. After long-term operation, the oil film on the tooth surface is prone to decay and dryness, which can cause the door to jam, increase the motor load, accelerate tooth surface wear, and shorten the life of transmission components. Conventional lubricating oil is mostly added manually on a regular basis, and cannot be added automatically, making it difficult to ensure the timeliness of lubrication. Summary of the Invention

[0005] In order to automatically add lubricating oil to the worm gear and ensure timely lubrication, this invention provides a self-lubricating sliding door system and its control method.

[0006] In a first aspect, the present invention provides a self-lubricating sliding door system, which adopts the following technical solution: A self-lubricating sliding door system includes a frame, a suspension mechanism for mounting a door to the frame, and a drive mechanism for moving the door to the suspension mechanism. It also includes a lubrication mechanism mounted on the frame and automatically lubricating the drive mechanism when it is in operation. The lubrication mechanism includes an oil reservoir mounted on the frame, a conveying assembly mounted on the oil reservoir for conveying lubricating oil to the drive mechanism, a piston plate slidably mounted in the oil reservoir for conveying lubricating oil to the conveying assembly, a threaded rod mounted in the oil reservoir for driving the piston plate to move, and an actuation assembly mounted on the frame for driving the threaded rod to rotate. The actuation component is matched with the suspension mechanism to drive the threaded rod to rotate when the drive mechanism is in operation.

[0007] By adopting the above technical solution, a lubrication mechanism linked to the drive mechanism is set in the frame, and the suspension mechanism triggers the starting component to drive the threaded rod to rotate, thereby pushing the piston plate to deliver lubricating oil, realizing automatic lubrication of the drive mechanism during operation, eliminating the need for manual addition of lubricating oil, thus ensuring the timeliness of the lubrication operation of the drive mechanism, and effectively avoiding the problems of operation jamming and component wear caused by untimely lubrication.

[0008] Optionally, the drive mechanism includes a reduction gearbox mounted on the frame, two drive shafts mounted on the frame, a synchronization component for driving the two drive shafts to rotate synchronously, a worm gear assembly mounted in the reduction gearbox for driving the drive shafts to rotate, and a motor mounted in the reduction gearbox for driving the worm gear assembly to work.

[0009] By adopting the above technical solution, the power output structure of the motor, worm gear assembly and gearbox drives the transmission shaft to rotate. During this process, the self-locking and large reduction ratio characteristics of the worm gear ensure the smooth operation of the sliding door. At the same time, the synchronous rotation of the two transmission shafts is achieved through the synchronization component, making the door slide more smoothly.

[0010] Optionally, the conveying assembly includes a first conveying pipe for conveying lubricating oil to the synchronization assembly for lubrication, a second conveying pipe for conveying lubricating oil to the gearbox for lubrication of the worm gear assembly, and a third conveying pipe for conveying lubricating oil in the gearbox back to the oil storage tank. The oil storage tank is connected to an oil inlet pipe for conveying lubricating oil to the oil storage tank; one-way valve structures are provided at the connection points of the oil inlet pipe, the first conveying pipe, the third conveying pipe and the second conveying pipe with the oil storage tank.

[0011] By adopting the above technical solution, automatic lubrication of the synchronization component and worm gear component is achieved. At the same time, the third conveying pipeline completes the return flow of lubricating oil in the gearbox, realizing the recycling of lubricating oil, reducing consumable consumption, and the one-way valve structure of each pipeline strictly controls the flow direction of lubricating oil to prevent backflow and mixing, ensuring the accuracy of lubricating oil delivery.

[0012] Optionally, the frame is equipped with a slide rail for the suspension mechanism to slide with the door; the frame is also equipped with a limiting block to restrict and block the movement of the suspension mechanism and the door. The suspension mechanism includes a suspension bracket mounted on the synchronization assembly, pulleys mounted on the suspension bracket and sliding along the slide rail, and suspension bolts for connecting the suspension bracket to the door.

[0013] By adopting the above technical solution, the cooperation between the slide rail and the pulley reduces the friction between the suspension mechanism and the door body. The limit block achieves precise limit of the door body's movement stroke to prevent excessive displacement. At the same time, the suspension bolts achieve a firm connection between the door body and the suspension frame, ensuring the stability of the suspension mechanism when it moves with the synchronous component. Meanwhile, the suspension frame drives the starting component to work, realizing the synchronous operation of lubrication action and door body movement.

[0014] Optionally, the synchronization assembly includes synchronizer pulleys mounted on the two drive shafts and a synchronizer belt sleeved on the two synchronizer pulleys for driving the two synchronizer pulleys to rotate synchronously. The frame is equipped with a lateral adjustment mechanism for fine-tuning the position of the synchronous pulley and the drive shaft on the side away from the motor in order to adjust the tension of the synchronous belt. The lateral adjustment mechanism includes an adjustment plate mounted on the frame, a transverse plate mounted on the drive shaft and slidably mounted on the adjustment plate, an adjustment bolt mounted on the adjustment plate and driving the transverse plate to move, and a second compression spring disposed between the adjustment plate and the transverse plate. The second compression spring drives the transverse plate to always tend to move away from the adjusting plate.

[0015] By adopting the above technical solution, the lateral adjustment mechanism can finely adjust the position of the synchronous pulley and the transmission shaft away from the motor side, thereby adjusting the tension of the synchronous belt. Furthermore, the second compression spring can eliminate transmission gaps and further improve the smoothness of synchronous transmission.

[0016] Optionally, the starting assembly includes a starting block slidably mounted on the frame, a drive rack mounted on the starting block, a drive gear meshing with the drive rack and used to drive the threaded rod to rotate, and a first compression spring connected between the starting block and the frame; The first compression spring drives the starting block to always tend to move away from the limiting block.

[0017] By adopting the above technical solution, the first compression spring provides reset power for the starting block, which drives the drive rack to move. When the drive rack moves, it drives the drive gear meshing with it to rotate, which in turn drives the threaded rod to rotate. This converts the linear movement of the starting block into the rotational motion of the threaded rod, thereby achieving precise driving of the piston plate and enabling the piston plate to deliver lubricating oil in a metered manner.

[0018] Optionally, the suspension bracket is equipped with a plug-in block, and the starting block is provided with a fixing structure for fixing the plug-in block and the starting block; The fixing structure includes a locking block that is slidably mounted on the starting block and used to lock the starting block and the plug-in block, and an unlocking block that is mounted on the frame and used to unlock the locking block; the locking block has two inclined surfaces; when the suspension frame moves, the locking block locks the plug-in block and the starting block, causing the starting block to move synchronously with the suspension frame.

[0019] By adopting the above technical solution, the double-inclined surface design of the locking block realizes the automatic locking of the suspension frame and the starting block, so that the starting block can be driven synchronously when the suspension frame moves, ensuring the reliability of the lubrication mechanism triggering. Then, the unlocking block realizes the automatic unlocking of both, and the first compression spring completes the reset of the starting block, forming a cyclic linkage mechanism of locking, linkage triggering, unlocking, and reset, so that the lubrication mechanism can be repeatedly triggered with the reciprocating movement of the door, realizing continuous automatic lubrication.

[0020] Optionally, a stirring assembly for stirring the lubricating oil when the piston plate moves is installed on the threaded rod; The stirring assembly includes a transmission gear mounted on the threaded rod via a key connection, a driven gear rotatably mounted on the piston plate and meshing with the transmission gear, a stirring impeller mounted on the driven gear, and a friction ring mounted on the piston plate and sleeved on the stirring impeller.

[0021] By adopting the above technical solution, the rotation of the threaded rod drives the stirring impeller to rotate, which fully stirs the lubricating oil in the oil tank, preventing the lubricating oil from settling, separating and deteriorating, ensuring the uniformity of oil composition, and improving the lubrication effect. In addition, the stirring impeller will rub against the friction ring when it rotates. The heat generated by the friction can assist in heating the lubricating oil, avoiding the oil from becoming viscous and stagnant in low-temperature environments, and ensuring the fluidity and supply stability of the lubricating oil under low-temperature conditions.

[0022] Secondly, this application provides a control method for a self-lubricating sliding door system, which adopts the following technical solution: A control method for a self-lubricating sliding door system, applied to a self-lubricating sliding door system, includes: Obtain the oil inlet type and the actual oil inlet volume per unit time of the oil inlet pipe; The baseline oil intake volume per unit time is retrieved based on the oil type; Determine the range of oil inflow fluctuations based on the baseline oil inflow rate; Calculate the difference in oil intake based on the actual oil intake and the benchmark oil intake; If the difference in oil inlet volume is within the range of oil inlet fluctuation, then the oil inlet pipe is not blocked; If the difference in oil inlet volume exceeds the range of oil inlet fluctuation, the oil inlet pipe is defined as blocked. The degree of blockage in the oil inlet pipe is determined based on the difference in oil inlet volume, and the oil inlet pipe is cleared.

[0023] By adopting the above technical solution, the model of the oil inlet pipe is obtained and the benchmark oil inlet volume is retrieved. The difference between the actual oil inlet volume and the fluctuation range are judged to achieve rapid and accurate detection of oil inlet pipe blockage. This can effectively distinguish between normal flow fluctuations and abnormal blockages, avoid system misoperation caused by misjudgment, and ensure the normal oil supply of the oil inlet system.

[0024] Optionally, methods for determining the degree of blockage in the oil inlet pipe based on the difference in oil inlet volume and for clearing the blockage include: Obtain the oil storage tank's model number and collect the initial and real-time liquid level values ​​of the oil storage tank; The difference in liquid level change is calculated based on the initial liquid level value and the real-time liquid level value, and the actual oil volume in the oil tank is obtained according to the oil storage type and the difference in liquid level change. The oil loss value of the inlet pipe is determined based on the actual oil inlet volume and the actual oil inlet amount, and the blockage ratio is calculated based on the oil loss value and the actual oil inlet amount. The degree of blockage is determined based on the difference between the blockage percentage and the oil inlet volume. The degree of blockage includes severe blockage of the oil inlet pipe and mild blockage of the oil inlet pipe. When the oil inlet pipe is severely blocked, a preset severe blockage signal is output, and the impeller is controlled to rotate according to the preset variable speed stirring parameters to form a bidirectional vortex to impact the oil inlet pipe with fluid. When the oil inlet pipe is slightly blocked, a preset slightly blocked signal is output to control the impeller to rotate at a constant speed to form a stable oil flow, so as to transmit the fluid thrust to the oil inlet pipe in the forward direction and carry the blockage into the oil storage tank.

[0025] By adopting the above technical solution, the actual oil inlet volume is calculated based on the change in oil level in the oil tank, and the oil loss value and blockage ratio are further obtained. Combined with the difference in oil inlet volume, the degree of blockage is quantitatively determined, making the unblocking action more targeted. In case of severe blockage, the impeller is driven to rotate at different speeds to form a bidirectional alternating vortex for powerful unblocking. In case of mild blockage, the impeller is driven to rotate at a uniform speed for smooth unblocking. Unblocking is achieved by using the impeller, eliminating the need for additional unblocking equipment and reducing equipment costs.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a lubrication mechanism linked to the drive mechanism in the frame, and using the suspension mechanism to trigger the starting component to drive the threaded rod to rotate, thereby pushing the piston plate to deliver lubricating oil, the automatic lubrication of the drive mechanism is achieved during operation, eliminating the need for manual addition of lubricating oil. This ensures the timeliness of the lubrication operation of the drive mechanism and effectively avoids problems such as running jamming and component wear caused by untimely lubrication. 2. The automatic locking of the suspension bracket and the starting block is achieved through the double-inclined surface design of the locking block, so that the starting block can be driven synchronously when the suspension bracket moves, ensuring the reliability of the lubrication mechanism triggering. Then, the automatic unlocking of the two is achieved through the unlocking block, and the starting block is reset in conjunction with the first compression spring, forming a cyclic linkage mechanism of locking, linkage triggering, unlocking, and reset, so that the lubrication mechanism can be repeatedly triggered with the reciprocating movement of the door, achieving continuous automatic lubrication; 3. The stirring impeller thoroughly stirs the lubricating oil in the oil tank, preventing the lubricating oil from settling, separating, or deteriorating, ensuring uniform oil composition, and improving lubrication. When the stirring impeller rotates, it rubs against the friction ring. The heat generated by this friction can assist in heating the lubricating oil, preventing the oil from becoming viscous and stagnant at low temperatures, and ensuring the fluidity and supply stability of the lubricating oil under low-temperature conditions. Attached Figure Description

[0027] Figure 1 This is a structural diagram of a self-lubricating sliding door system; Figure 2 This is a structural diagram of the drive mechanism, lubrication mechanism, and stirring assembly; Figure 3 It is a cross-sectional view of the starting components and the fixed structure; Figure 4 This is a schematic diagram of the suspension mechanism; Figure 5 This is a schematic diagram of the lateral adjustment mechanism.

[0028] The parts referred to by the numbers in the attached diagrams are as follows: 1. Frame; 11. Slide rail; 12. Limit block; 2. Drive mechanism; 21. Gearbox; 22. Drive shaft; 23. Synchronization assembly; 231. Synchronization pulley; 232. Synchronization belt; 24. Worm gear assembly; 241. Worm section; 242. Worm gear; 25. Motor; 3. Suspension mechanism; 31. Suspension frame; 32. Pulley; 33. Suspension bolt; 34. Insertion block; 35. Insertion slot; 4. Lateral adjustment mechanism; 41. Adjusting plate; 42. Lateral sliding plate; 43. Adjusting bolt; 44. Second compression spring; 45. Arc-shaped block; 46. Waist-shaped hole; 47. Moving hole; 48. Limit ring; 5. Lubrication mechanism; 51. 52. Oil storage tank; 53. Piston plate; 54. Threaded rod; 55. Conveying assembly; 541. First conveying pipe; 542. Second conveying pipe; 543. Third conveying pipe; 544. Oil inlet pipe; 55. Starting assembly; 551. Starting block; 552. Drive rack; 553. Drive gear; 554. First compression spring; 555. Connecting block; 556. Sliding hole; 56. Partition plate; 57. Perforation; 6. Fixing structure; 61. Locking block; 62. Unlocking block; 63. Sliding groove; 7. Stirring assembly; 71. Transmission gear; 72. Driven gear; 73. Stirring impeller; 74. Friction ring; 75. Rotating cylinder; 76. Stirring shaft; 77. Support rod; 78. Support cylinder. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] This application discloses a self-lubricating sliding door system.

[0031] Reference Figure 1 A self-lubricating sliding door system includes a frame 1, a suspension mechanism 3, a drive mechanism 2, and a lubrication mechanism 5.

[0032] The suspension mechanism 3 is slidably mounted on the frame 1 and is used to connect the door to the frame 1. The drive mechanism 2 is fixedly mounted on the frame 1 and is used to drive the door to move with the suspension mechanism 3. The lubrication mechanism 5 is fixedly mounted on the frame 1 and is used to automatically lubricate the drive mechanism 2 when it is working.

[0033] During operation, the door is first fixedly installed together with the frame 1 by the suspension mechanism 3. Then, the drive mechanism 2 is started to move the door and the suspension mechanism 3. When the door and the suspension mechanism 3 move, the lubrication mechanism 5 is started, so that the lubrication mechanism 5 performs self-lubrication on the drive mechanism 2.

[0034] Reference Figure 1 as well as Figure 2 The drive mechanism 2 includes a reduction gearbox 21, a drive shaft 22, a synchronization assembly 23, a worm gear assembly 24, and a motor 25. The synchronization assembly 23 includes two synchronizer pulleys 231 and a synchronizer belt 232 sleeved on the two pulleys 231. The worm gear assembly 24 includes a worm section 241 and a worm wheel 242 meshing with the worm section 241. There are two drive shafts 22, corresponding to the number of synchronizer pulleys 231. The synchronizer pulleys 231 and the synchronizer belt 232 are equipped with teeth to prevent slippage during operation.

[0035] The gearbox 21 is fixedly mounted on the frame 1, and the motor 25 is fixedly mounted on the gearbox 21. The output end of the motor 25 passes through the gearbox 21 and is fixedly connected to the worm section 241 via a coupling. A worm wheel 242 meshes with the outer side of the worm section 241, and the worm wheel 242 is fixedly mounted on the corresponding drive shaft 22. Two synchronous pulleys 231 are fixedly mounted on the corresponding drive shafts 22, and a synchronous belt 232 is sleeved on the outer side of the two synchronous pulleys 231 to drive the two drive shafts 22 to rotate synchronously.

[0036] Reference Figure 3 as well as Figure 4 A slide rail 11 is fixedly installed on the inner side of the frame 1 for the suspension mechanism 3 to slide with the door. A limit block 12 is fixedly installed on the inner side of the frame 1 by locking bolts, so that the limit block 12 limits and blocks the movement of the suspension mechanism 3 and the door.

[0037] The suspension mechanism 3 includes a suspension frame 31, a pulley 32, and a suspension bolt 33. The suspension frame 31 is fixedly mounted on the synchronous belt 232, and the pulley 32 is rotatably mounted on the inner side of the suspension frame 31 and slidably mounted on the slide rail 11. The locking bolt is used to lock the door and the suspension frame 31 together, so that when the synchronous belt 232 moves, it drives the suspension frame 31 to move synchronously with the door.

[0038] During operation, the starting motor 25 outputs power, which is reduced and increased in torque by the reduction gearbox 21. The torque is increased and driven by the coupling to rotate the worm section 241. When the worm section 241 rotates, it drives the worm wheel 242 that meshes with it to rotate, thereby driving the transmission shaft 22 to rotate. When the transmission shaft 22 rotates, it drives the two transmission shafts 22 to rotate synchronously through the cooperation of the two synchronous pulleys 231 and the synchronous belt 232. The teeth on the synchronous pulleys 231 and the synchronous belt 232 prevent slippage, thereby realizing the synchronous operation of the two transmission shafts 22, which in turn drives the synchronous belt 232 to move smoothly in a cycle.

[0039] Meanwhile, because a suspension frame 31 is fixed on the synchronous belt 232, and the pulley 32 on the inner side of the suspension frame 31 slides along the slide rail 11 on the frame 1, and the suspension frame 31 is locked to the door by locking bolts, when the synchronous belt 232 moves, it will synchronously drive the suspension frame 31, pulley 32, and door to move in a directional manner along the slide rail 11. Moreover, during movement, the movement stroke of the suspension frame 31 and the door can be limited and blocked by the limiting block 12 on the frame 1 to prevent excessive displacement. At the same time, the drive shaft 22 at the end away from the motor 25 cooperates with the moving hole 47 of the frame 1 through the limiting ring 48 to achieve micro-slip and fine adjustment.

[0040] Reference Figure 5 The frame 1 is equipped with a lateral adjustment mechanism 4 for fine-tuning the position of the synchronous pulley 231 and the drive shaft 22 on the side away from the motor 25 in order to adjust the tension of the synchronous belt 232.

[0041] The lateral adjustment mechanism 4 includes an adjustment plate 41, a transverse plate 42, an adjustment bolt 43, and a second compression spring 44.

[0042] Adjusting plate 41 is fixedly mounted on frame 1. Transverse plate 42 is slidably mounted on adjusting plate 41 and fixedly mounted on corresponding drive shaft 22. An arc-shaped block 45 is fixedly mounted on adjusting plate 41, and adjusting bolt 43 is rotatably mounted on adjusting plate 41, passing through arc-shaped block 45 so that one end is fixedly mounted on transverse plate 42, thereby facilitating the movement of transverse plate 42, so that the corresponding drive shaft 22 and synchronous pulley 231 move along moving hole 47, thereby adjusting the tension of synchronous belt 232. Transverse plate 42 has an oblong hole 46 that matches the length of moving hole 47. After transverse plate 42 moves into position, locking bolt is inserted into oblong hole 46 to lock transverse plate 42. The second compression spring 44 is sleeved on the outside of the adjusting bolt 43. One end of the second compression spring 44 is fixedly connected to the arc block 45, and the other end of the second compression spring 44 is fixedly connected to the transverse plate 42. The second compression spring 44 drives the transverse plate 42 to always tend to move away from the adjusting plate 41.

[0043] The frame 1 has a movable hole 47. The drive shaft 22, which is away from the motor 25, is slidably installed in the movable hole 47. Two limiting rings 48 are fixedly installed on the drive shaft 22, which is away from the motor 25. The two limiting rings 48 are respectively movably abutted against the inner and outer sides of the frame 1, so that the drive shaft 22 moves more stably when fine-tuning.

[0044] When adjusting the tension during operation, first, by turning the adjusting bolt 43, the transverse plate 42 is moved laterally along the adjusting plate 41, which in turn pulls the corresponding drive shaft 22 to move within the moving hole 47 of the frame 1, simultaneously driving the synchronous pulley 231 on that side to move, thereby changing the distance between the two synchronous pulleys 231 and achieving precise adjustment of the tension of the synchronous belt 232. After adjustment, the locking bolt is inserted into the oblong hole 46 on the transverse plate 42 and locked, which fixes the position of the transverse plate 42, the drive shaft 22 and the synchronous pulley 231, maintaining the tension of the synchronous belt 232.

[0045] The second compression spring 44 is sleeved on the outside of the adjusting bolt 43, and one end of the second compression spring 44 is fixedly connected to the arc block 45, while the other end of the second compression spring 44 is fixedly connected to the transverse plate 42, thereby always driving the transverse plate 42 to move away from the adjusting plate 41 and eliminating transmission gap.

[0046] Reference Figure 1 , Figure 2 as well as Figure 3 The lubrication mechanism 5 includes an oil reservoir 51, a conveying assembly 54, a piston plate 52, a threaded rod 53, and a starting assembly 55. The conveying assembly 54 includes a first conveying pipe 541, a second conveying pipe 542, and a third conveying pipe 543. The starting assembly 55 includes a starting block 551, a drive rack 552, a drive gear 553, and a first compression spring 554.

[0047] A starting block 551 is fixedly installed inside the frame 1. One end of a first compression spring 554 is fixedly connected to the starting block 551, and the other end of the first compression spring 554 is fixedly connected to the frame 1. The first compression spring 554 drives the starting block 551 to always tend to move away from the limit block 12. A connecting block 555 is fixedly installed on the starting block 551. A sliding hole 556 is provided on the frame 1, and the connecting block 555 is slidably installed in the sliding hole 556. The connecting block 555 is fixedly installed on the drive rack 552, which meshes with the drive gear 553. The drive gear 553 is fixedly installed on the threaded rod 53. A partition 56 is fixedly installed inside the oil tank 51. The drive rack 552 and the drive gear 553 are located below the partition 56. A through hole 57 is provided on the oil tank 51 so that the movement of the drive rack 552 is not affected. The oil reservoir 51 is fixedly mounted on the frame 1, and the threaded rod 53 is rotatably mounted inside the oil reservoir 51. The piston plate 52 is threadedly connected to the threaded rod 53.

[0048] The first delivery pipe 541 is connected to the oil reservoir 51 and is used to deliver lubricating oil to the synchronization assembly 23 for lubrication. The second delivery pipe 542 is connected between the oil reservoir 51 and the gearbox 21 and is used to deliver lubricating oil to the gearbox 21 for lubrication of the worm gear assembly 24. The third delivery pipe 543 is connected between the oil reservoir 51 and the gearbox 21 and is used to return the lubricating oil in the gearbox 21 to the oil reservoir 51. An oil inlet pipe 544 is connected to the oil reservoir 51 for delivering lubricating oil to the oil reservoir 51. One-way valve structures are provided at the connections of the oil inlet pipe 544, the first delivery pipe 541, the third delivery pipe 543, and the second delivery pipe 542 to the oil reservoir 51. The one-way valve structures installed in the oil inlet pipe 544 and the third delivery pipe 543 have the same flow direction. The one-way valve structures installed in the first delivery pipe 541 and the second delivery pipe 542 have the same flow direction. The one-way valve structure installed in the oil inlet pipe 544 has the opposite flow direction to the one-way valve structure installed in the first delivery pipe 541.

[0049] Reference Figure 3 as well as Figure 4 A plug-in block 34 is fixedly installed on the suspension bracket 31, and a fixing structure 6 is provided on the starting block 551 for fixing the plug-in block 34 and the starting block 551. The fixing structure 6 includes a locking block 61 and an unlocking block 62.

[0050] The starting block 551 has a sliding groove 63, and the locking block 61 is slidably installed in the sliding groove 63. The locking block 61 has two inclined surfaces. The plug-in block 34 has a plug-in groove 35 for the locking block 61 to be inserted into. So when the suspension frame 31 moves, the plug-in block 34 and the starting block 551 are locked together by the inclined surfaces of the locking block 61, so that the starting block 551 moves synchronously with the suspension frame 31.

[0051] The unlocking block 62 is fixedly installed on the frame 1. The unlocking block 62 has an unlocking surface that matches the inclined surface. When the suspension frame 31 moves in the direction of the starting block 551, the unlocking surface of the unlocking block 62 pushes the locking block 61 upward, thereby unlocking the plug-in block 34 from the starting block 551.

[0052] During operation, the door body moves synchronously with the suspension frame 31. The plug block 34 moves closer to the starting block 551 along with the suspension frame 31. The plug block 34 presses against the inclined surface of the locking block 61, forcing the locking block 61 to be inserted into the plug groove 35, thus locking the plug block 34 and the starting block 551 together. Then the starting block 551 moves synchronously with the suspension frame 31.

[0053] When the starting block 551 moves, it drives the drive rack 552 to slide synchronously through the connecting block 555. The drive rack 552 then drives the drive gear 553 that meshes with it to rotate, which in turn drives the threaded rod 53 to rotate synchronously. When the threaded rod 53 rotates, it drives the piston plate 52 that is threadedly connected to it to move horizontally along the inside of the oil reservoir 51, squeezing the lubricating oil in the oil reservoir 51.

[0054] Piston plate 52 divides the inner cavity of oil reservoir 51 into a first delivery chamber and a second delivery chamber, both of which are connected to oil inlet pipes 544. When plug-in block 34 and starting block 551 are locked together, threaded rod 53 rotates forward, driving piston plate 52 to move towards the second delivery chamber and squeeze the lubricating oil in the chamber. At this time, the one-way valve of the second delivery pipe 542 opens, and lubricating oil flows into gearbox 21 through the pipe, achieving automatic lubrication of worm gear assembly 24. At the same time, the one-way valve of the oil inlet pipe 544 corresponding to the second delivery chamber closes to prevent backflow of lubricating oil, and the one-way valve of the oil inlet pipe 544 corresponding to the first delivery chamber opens to complete the preparation for oil replenishment.

[0055] When the suspension bracket 31 moves the starting block 551 to the unlocking block 62, the unlocking surface of the unlocking block 62 pushes up the locking block 61, disengaging it from the insertion slot 35, and the insertion block 34 successfully unlocks from the starting block 551. Simultaneously, the suspension bracket 31 moves the starting block 551 and the drive rack 552 in the reverse direction, causing the threaded rod 53 to rotate in the reverse direction. At this time, the one-way valves of the first conveying pipe 541 and the third conveying pipe 543 open, and lubricating oil is delivered to the synchronization assembly 23 through the first conveying pipe 541, automatically lubricating the synchronization pulley 231 and the synchronization belt 232. The lubricating oil in the reduction gearbox 21 flows back to the second conveying chamber through the third conveying pipe 543. At the same time, the one-way valve of the oil inlet pipe 544 of the first conveying chamber closes to prevent backflow of lubricating oil, the one-way valve of the second conveying pipe 542 closes, and the one-way valve of the oil inlet pipe 544 of the second conveying chamber opens to replenish lubricating oil in time, completing a single lubrication cycle. Subsequent reciprocating movements of the door can repeatedly trigger this lubrication action.

[0056] Reference Figure 2 A stirring assembly 7 is installed on the threaded rod 53 to agitate the lubricating oil when the piston plate 52 moves. The stirring assembly 7 includes a drive gear 71, a driven gear 72, a stirring impeller 73, and a friction ring 74.

[0057] The transmission gear 71 is connected to the threaded rod 53 via a spline, allowing the transmission gear 71 to move and rotate simultaneously along the axial direction of the threaded rod 53. The driven gear 72 meshes with the transmission gear 71. A rotating cylinder 75 is rotatably mounted on the piston plate 52, and the driven gear 72 is fixedly mounted on the rotating cylinder 75. A stirring shaft 76 is fixedly mounted on the rotating cylinder 75, and a stirring impeller 73 is fixedly mounted on the stirring shaft 76. A support rod 77 is fixedly mounted on the piston plate 52, and a friction ring 74 is fixedly mounted on the support rod 77. The friction ring 74 is sleeved on the outside of the stirring impeller 73, and the stirring impeller 73 abuts against the inner wall of the friction ring 74. A support cylinder 78 is fixedly mounted on the transmission gear 71, and the support cylinder 78 is rotatably mounted on the piston plate 52, thus making the rotation of the transmission gear 71 more stable.

[0058] During operation, the rotation of the threaded rod 53 drives the transmission gear 71 to rotate synchronously. The transmission gear 71 is splined onto the threaded rod 53, allowing it to rotate coaxially with the threaded rod 53 and slide axially along the threaded rod 53 following the piston plate 52, ensuring that the transmission is not affected by the displacement of the piston plate 52. The rotation of the transmission gear 71 drives the driven gear 72, which in turn drives the rotating cylinder 75 to rotate synchronously, which in turn drives the stirring shaft 76 to rotate, thereby driving the stirring impeller 73 to rotate. This thoroughly stirs the lubricating oil in the oil tank 51, preventing the lubricating oil from settling, separating, or deteriorating, and ensuring the uniformity of the oil composition.

[0059] Simultaneously, when the piston plate 52 moves, it drives the friction ring 74 to move synchronously through the support rod 77. The friction ring 74 is sleeved on the outside of the stirring impeller 73, and the stirring impeller 73 always abuts against the inner wall of the friction ring 74. Therefore, when the stirring impeller 73 rotates, it will continuously rub against the inner wall of the friction ring 74 to generate heat, which will assist in heating the lubricating oil in the oil tank 51, maintain the appropriate temperature of the lubricating oil, prevent the oil from becoming viscous and stagnant in low-temperature environments, improve the lubrication effect under low-temperature conditions, and ensure stable oil supply.

[0060] Based on the same inventive concept, embodiments of the present invention provide a control method for a self-lubricating sliding door system.

[0061] A control method for a self-lubricating sliding door system includes the following steps: Step S100: Obtain the oil inlet type of oil inlet pipe 544 and the actual oil inlet volume of oil inlet pipe 544 per unit time.

[0062] The oil inlet model refers to the specifications, diameter, and type of compatible oil supply equipment corresponding to the oil inlet pipe 544 itself, which can be obtained by scanning the QR code on the oil inlet pipe 544.

[0063] The actual oil intake volume refers to the flow rate of lubricating oil actually delivered by the oil inlet pipe 544 per unit time under the current operating conditions. The actual oil intake volume can be detected and collected in real time by a flow sensor preset at the oil inlet end of the oil inlet pipe 544.

[0064] Step S101: Retrieve the baseline oil intake volume per unit time based on the oil intake model.

[0065] The reference oil inlet volume refers to the theoretical oil flow rate of the oil inlet pipe 544 under standard operating conditions per unit time. The reference oil inlet volume can be obtained by retrieving the parameter table of the oil inlet pipe 544 of the oil inlet model.

[0066] Step S102: Determine the oil inlet fluctuation range based on the baseline oil inlet quantity.

[0067] The oil inlet fluctuation range refers to the upper and lower limit range set with the benchmark oil inlet volume as the center and the allowable flow deviation under normal equipment operation. It is used to distinguish between normal flow fluctuations and abnormal blockages.

[0068] Step S103: Calculate the difference in oil intake based on the actual oil intake and the reference oil intake.

[0069] The difference in oil intake refers to the absolute value of the difference between the actual oil intake and the reference oil intake. This difference is calculated by taking the absolute value of the difference between the actual and reference oil intake.

[0070] The calculated difference in oil inlet volume is compared with the range of oil inlet fluctuations to determine the blockage status of oil inlet pipe 544.

[0071] Step S104: If the difference in oil inlet volume is within the range of oil inlet fluctuation, then the oil inlet pipe 544 is not blocked and maintains normal oil supply.

[0072] If the difference in oil inlet volume is within the range of oil inlet fluctuation, it indicates that although there is a difference between the actual oil inlet volume and the reference oil inlet volume, the difference is small, which can be considered as the lubricating oil being able to pass normally in the oil inlet pipe 544, and the oil inlet pipe 544 is not blocked. When the system monitors the above situation in real time, it will not intervene in the mechanism.

[0073] Step S105: If the difference in oil inlet volume exceeds the range of oil inlet fluctuation, the oil inlet pipe 544 is defined as blocked. The degree of blockage of the oil inlet pipe 544 is determined based on the difference in oil inlet volume, and the oil inlet pipe 544 is cleared.

[0074] If the difference in oil inlet volume exceeds the oil inlet fluctuation range, it means that the actual oil inlet volume is much smaller than the reference oil inlet volume, and the difference between the two is large. The amount of lubricating oil that can pass through the oil inlet pipe 544 is small, and the oil inlet pipe 544 is blocked.

[0075] When the above situation occurs, the system will automatically judge the degree of blockage of the oil inlet pipe 544 based on the difference in oil inlet volume. The system will use different unblocking methods to unblock different degrees of blockage in the oil inlet pipe 544.

[0076] The specific methods for judging the degree of blockage in the oil inlet pipe 544 and the corresponding unblocking methods will not be elaborated here, but will be introduced in detail in subsequent embodiments.

[0077] The methods for determining the degree of blockage in the oil inlet pipe 544 based on the difference in oil inlet flow rate and for clearing the blockage in the oil inlet pipe 544 include: Step S200: Obtain the oil storage model of oil storage tank 51, and collect the initial liquid level value and real-time liquid level value of oil storage tank 51.

[0078] The oil storage model refers to the model parameters corresponding to the volume specifications, cross-sectional shape, and effective internal oil storage space of the oil storage tank 51. The oil storage model can be obtained by scanning the QR code on the oil storage tank 51.

[0079] The initial liquid level value refers to the initial liquid level height in the oil reservoir 51 before the start of the oil filling operation. The initial liquid level value can be obtained by a liquid level sensor preset in the oil reservoir 51.

[0080] The real-time liquid level value refers to the actual change in the liquid level height within the oil reservoir 51 during the oil filling operation. The real-time liquid level value can be continuously detected by a liquid level sensor.

[0081] Step S201: Calculate the difference in liquid level change based on the initial liquid level value and the real-time liquid level value, and calculate the actual oil inlet volume in the oil storage tank 51 according to the oil storage type and the difference in liquid level change.

[0082] The liquid level change difference refers to the height difference between the initial liquid level value and the real-time liquid level value, which is obtained by calculating the difference between the real-time liquid level value and the initial liquid level value and taking the absolute value.

[0083] The actual oil inflow volume refers to the total volume of oil that actually flows into the oil storage tank 51 per unit time. The effective cross-sectional area of ​​the oil storage tank 51 is retrieved from the system database based on the oil storage model. This effective cross-sectional area is then multiplied by the difference in liquid level to calculate the actual oil inflow volume into the oil storage tank 51.

[0084] Step S202: Determine the oil loss value of the oil inlet pipe 544 based on the actual oil inlet volume and the actual oil inlet amount, and calculate the blockage ratio based on the oil loss value and the actual oil inlet amount.

[0085] The oil loss value refers to the amount of oil lost during the transportation process of the oil inlet pipe 544 due to factors such as blockage, pipe wall adhesion, and leakage. The oil loss value can be obtained by subtracting the actual oil volume from the actual oil intake volume.

[0086] The blockage percentage refers to the proportion of fuel loss to the actual fuel intake, used to quantify the impact of blockage on fuel intake. The blockage percentage is obtained by dividing the fuel loss by the actual fuel intake and converting it to a percentage.

[0087] Step S203: Determine the degree of blockage based on the difference between the blockage percentage and the oil inlet volume. The degree of blockage includes severe blockage of oil inlet pipe 544 and mild blockage of oil inlet pipe 544.

[0088] The degree of blockage refers to the level of blockage determined by a combination of the proportion of blockage and the deviation of the oil inlet flow rate difference. When the blockage proportion is high and the oil inlet flow rate difference significantly exceeds the oil inlet flow rate fluctuation range, it is judged as severe blockage of oil inlet pipe 544. When the blockage proportion is low and the oil inlet flow rate difference slightly exceeds the oil inlet flow rate fluctuation range, it is judged as mild blockage of oil inlet pipe 544.

[0089] Step S204: When the oil inlet pipe 544 is severely blocked, a preset severe blockage signal is output, and the impeller 73 is controlled to rotate according to the preset variable speed stirring parameters to form a bidirectional vortex to impact the oil inlet pipe 544 with fluid.

[0090] The severe blockage signal refers to a high-priority electrical signal output when the oil inlet pipe 544 is determined to be in a severe blockage state, which is used to trigger the system to perform a powerful unblocking action.

[0091] The variable speed stirring parameters refer to the set of working parameters of the stirring impeller 73 that are pre-stored to deal with the severe blockage of the oil inlet pipe 544.

[0092] When the system outputs a severe blockage signal, it triggers a powerful unblocking action. Subsequently, it provides instructions for the variable speed operation of the stirring impeller 73, driving the stirring impeller 73 to rotate according to the variable speed stirring parameters. This causes the stirring impeller 73 to rotate at different speeds, forming bidirectional alternating vortices. The powerful impact force generated by the vortices is used to repeatedly impact the severe blockage on the inner wall of the oil inlet pipe 544, achieving the purpose of powerful unblocking.

[0093] Meanwhile, a micro auxiliary motor is provided at the bottom of the threaded rod 53 so that the threaded rod 53 can be driven to rotate in case of severe blockage. This micro auxiliary motor will drive the stirring impeller 73 to rotate to remove the blockage. In case of severe blockage, the shifting mechanism will separate the drive mechanism 2 from the threaded rod 53 so as not to affect the support movement of the door. After the blockage is removed, the drive motor 25 will be connected to the threaded rod 53 again through the shifting mechanism.

[0094] In addition, the micro auxiliary motor is used to provide a rotation source for the stirring impeller 73 when the oil inlet pipe 544 is severely blocked, and the micro auxiliary motor does not work under normal circumstances.

[0095] The shifting mechanism is used to switch the rotation of the threaded rod 53 from the drive mechanism 2 to the micro auxiliary motor drive when the oil inlet pipe 544 is severely blocked.

[0096] Step S205: When the oil inlet pipe 544 is slightly blocked, a preset slightly blocked signal is output to control the stirring impeller 73 to rotate at a constant speed to form a stable oil flow so as to transmit the fluid thrust to the oil inlet pipe 544 in the forward direction to carry the blockage into the oil storage tank 51.

[0097] The mild blockage signal refers to the normal level electrical signal output by the controller when it determines that the oil inlet pipe 544 is in a mild blockage state, which is used to trigger the system to perform a gentle unblocking action.

[0098] When the system outputs a mild blockage signal, it provides a uniform speed rotation command to the impeller 73. Then, the rotation of the threaded rod 53 is started by the micro auxiliary motor through the shifting mechanism. The micro auxiliary motor drives the threaded rod 53 to rotate, so that the impeller 73 rotates at a uniform speed, forming a stable oil flow with appropriate thrust. This oil flow is conducted along the oil supply direction of the oil inlet pipe 544, gradually pushing the mild blockage away from the inner wall of the oil inlet pipe 544, and finally carrying the blockage into the oil storage tank 51 in the forward direction, achieving the purpose of gentle unblocking.

[0099] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A self-lubricating sliding door system, comprising a frame (1), a suspension mechanism (3) for mounting a door to the frame (1), and a drive mechanism (2) for moving the door to the suspension mechanism (3), characterized in that, It also includes a lubrication mechanism (5) that is mounted on the frame (1) and automatically lubricates the drive mechanism (2) when the drive mechanism (2) is working; The lubrication mechanism (5) includes an oil reservoir (51) mounted on the frame (1), a conveying assembly (54) mounted on the oil reservoir (51) for conveying lubricating oil to the drive mechanism (2), a piston plate (52) slidably mounted in the oil reservoir (51) for conveying lubricating oil to the conveying assembly (54), a threaded rod (53) mounted in the oil reservoir (51) for driving the piston plate (52) to move, and an actuation assembly (55) mounted on the frame (1) for driving the threaded rod (53) to rotate. The starting component (55) is matched with the suspension mechanism (3) to drive the threaded rod (53) to rotate when the drive mechanism (2) is in operation.

2. The self-lubricating sliding door system according to claim 1, characterized in that, The drive mechanism (2) includes a gearbox (21) mounted on the frame (1), two drive shafts (22) mounted on the frame (1), a synchronization component (23) for driving the two drive shafts (22) to rotate synchronously, a worm gear assembly (24) mounted in the gearbox (21) for driving the drive shafts (22) to rotate, and a motor (25) mounted in the gearbox (21) for driving the worm gear assembly (24) to work.

3. The self-lubricating sliding door system according to claim 2, characterized in that, The conveying assembly (54) includes a first conveying pipe (541) for conveying lubricating oil to the synchronization assembly (23) for lubrication, a second conveying pipe (542) for conveying lubricating oil to the gearbox (21) for lubrication of the worm gear assembly (24), and a third conveying pipe (543) for conveying lubricating oil in the gearbox (21) back to the oil reservoir (51). The oil storage tank (51) is connected to an oil inlet pipe (544) for conveying lubricating oil to the oil storage tank (51); a one-way valve structure is provided at the connection points between the oil inlet pipe (544), the first conveying pipe (541), the third conveying pipe (543) and the second conveying pipe (542) and the oil storage tank (51).

4. A self-lubricating sliding door system according to claim 2, characterized in that, The frame (1) is equipped with a slide rail (11) for the suspension mechanism (3) to slide with the door; the frame (1) is equipped with a limiting block (12) to limit and block the movement of the suspension mechanism (3) and the door. The suspension mechanism (3) includes a suspension bracket (31) mounted on the synchronization component (23), a pulley (32) mounted on the suspension bracket (31) and sliding along the slide rail (11), and a suspension bolt (33) for connecting the suspension bracket (31) to the door.

5. A self-lubricating sliding door system according to claim 2, characterized in that, The synchronization component (23) includes a synchronization pulley (231) mounted on the two drive shafts (22) and a synchronization belt (232) sleeved on the two synchronization pulleys (231) for driving the two synchronization pulleys (231) to rotate synchronously. The frame (1) is equipped with a lateral adjustment mechanism (4) for fine-tuning the position of the synchronous pulley (231) and the drive shaft (22) on the side away from the motor (25) to adjust the tension of the synchronous belt (232). The lateral adjustment mechanism (4) includes an adjustment plate (41) mounted on the frame (1), a transverse plate (42) mounted on the drive shaft (22) and slidably mounted on the adjustment plate (41), an adjustment bolt (43) mounted on the adjustment plate (41) and driving the transverse plate (42) to move, and a second compression spring (44) disposed between the adjustment plate (41) and the transverse plate (42). The second compression spring (44) drives the transverse plate (42) to always tend to move away from the adjusting plate (41).

6. A self-lubricating sliding door system according to claim 4, characterized in that, The starting assembly (55) includes a starting block (551) slidably mounted on the frame (1), a drive rack (552) mounted on the starting block (551), a drive gear (553) meshing with the drive rack (552) and used to drive the threaded rod (53) to rotate, and a first compression spring (554) connected between the starting block (551) and the frame (1). The first compression spring (554) drives the starting block (551) to always tend to move away from the limiting block (12).

7. A self-lubricating sliding door system according to claim 6, characterized in that, The suspension bracket (31) is equipped with a plug-in block (34), and the starting block (551) is provided with a fixing structure (6) for fixing the plug-in block (34) and the starting block (551). The fixing structure (6) includes a locking block (61) that is slidably mounted on the starting block (551) and used to lock the starting block (551) and the plug-in block (34), and an unlocking block (62) that is mounted on the frame (1) and used to unlock the locking block (61); the locking block (61) has two inclined surfaces; when the suspension frame (31) moves, the locking block (61) locks the plug-in block (34) and the starting block (551) together, causing the starting block (551) to move synchronously with the suspension frame (31).

8. A self-lubricating sliding door system according to claim 3, characterized in that, The threaded rod (53) is equipped with a stirring assembly (7) that stirs the lubricating oil when the piston plate (52) moves. The stirring assembly (7) includes a transmission gear (71) mounted on the threaded rod (53) via a key connection, a driven gear (72) rotatably mounted on the piston plate (52) and meshing with the transmission gear (71), a stirring impeller (73) mounted on the driven gear (72), and a friction ring (74) mounted on the piston plate (52) and sleeved on the stirring impeller (73).

9. A control method for a self-lubricating sliding door system, applied to the self-lubricating sliding door system as described in claim 8, characterized in that, include: Obtain the oil inlet type of the oil inlet pipe (544) and the actual oil inlet volume of the oil inlet pipe (544) per unit time; The baseline oil intake volume per unit time is retrieved based on the oil type; Determine the range of oil inflow fluctuations based on the baseline oil inflow rate; Calculate the difference in oil intake based on the actual oil intake and the benchmark oil intake; If the difference in oil inlet volume is within the range of oil inlet fluctuation, then the oil inlet pipe (544) is not blocked; If the difference in oil inlet volume exceeds the range of oil inlet fluctuation, the oil inlet pipe (544) is defined as blocked. The degree of blockage of the oil inlet pipe (544) is determined based on the difference in oil inlet volume, and the oil inlet pipe (544) is cleared.

10. The control method for a self-lubricating sliding door system according to claim 9, characterized in that, The methods for determining the degree of blockage in the oil inlet pipe (544) based on the difference in oil inlet volume and for clearing the blockage in the oil inlet pipe (544) include: Obtain the oil storage model of the oil storage tank (51), and collect the initial liquid level value and real-time liquid level value of the oil storage tank (51); The difference in liquid level change is calculated based on the initial liquid level value and the real-time liquid level value, and the actual oil volume in the oil storage tank (51) is calculated according to the oil storage model and the difference in liquid level change. The oil loss value of the oil inlet pipe (544) is determined based on the actual oil inlet volume and the actual oil inlet amount, and the blockage ratio is calculated based on the oil loss value and the actual oil inlet amount. The degree of blockage is determined based on the difference between the blockage percentage and the oil inlet volume. The degree of blockage includes severe blockage of the oil inlet pipe (544) and mild blockage of the oil inlet pipe (544). When the oil inlet pipe (544) is severely blocked, a preset severe blockage signal is output, and the impeller (73) is controlled to rotate according to the preset variable speed stirring parameters to form a bidirectional vortex to impact the oil inlet pipe (544) with fluid. When the oil inlet pipe (544) is slightly blocked, a preset slightly blocked signal is output to control the stirring impeller (73) to rotate at a constant speed to form a stable oil flow so as to transmit the fluid thrust to the oil inlet pipe (544) in the forward direction to carry the blockage into the oil storage tank (51).

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