Split pulley lubricating oil filling structure of torque protector and use method thereof

Abstract

The application relates to the technical field of torque protectors, in particular to a split pulley lubricating oil filling structure of a torque protector and a use method thereof. The torque protector comprises a servo motor and a transmission belt. A torsion limiter is fixedly installed at one end of a main shaft of the servo motor. A pulley assembly is arranged outside the torsion limiter. A permeation film is bonded to the inner side of the pulley assembly. A bearing assembly is bonded to the inner side of the permeation film. The transmission belt is arranged outside the pulley assembly. The pulley assembly comprises a clamping plate. An installation groove is formed in the inner side of the clamping plate. A spring is fixedly connected to the inner side of the installation groove. A sealing plate is fixedly connected to one side of the clamping plate through bolts. A plate hole is formed in the inner side of the clamping plate. In the application, a complete and efficient lubricating system is constructed, active lubrication management is realized, the added lubricating oil can be accurately and controllably conveyed to core friction pairs which most need lubrication, and the friction states of various components can be effectively maintained in an ideal interval of full-film lubrication or elastohydrodynamic lubrication.

Description

Technical Field

[0001] This invention relates to the field of torque protector technology, specifically to a split-type pulley lubrication oil filling structure and usage method for torque protectors. Background Technology

[0002] Torque protector, also known as torque limiter, is a core protective device installed in mechanical transmission systems. It is used to monitor torque changes in the transmission process in real time. When the torque exceeds the limit due to overload, jamming or sudden impact, it will quickly cut off the power transmission by means of friction slippage, mechanical disengagement, etc., with a response speed of milliseconds. In typical applications of torque protectors, they are usually paired with pulleys to achieve parallel shaft transmission. Power is transmitted through flat belts, V-belts, or synchronous belts. This parallel pulley system not only has the transmission function of conventional pulleys, but more importantly, it can respond instantly and trigger slippage protection when there is a sudden change in load or continuous overload, thus establishing a reliable barrier between power cut-off and equipment safety. However, in common configurations where torque protectors are used in conjunction with pulleys, traditional pulleys are mostly enclosed or integral structures, lacking effective lubrication channels. As usage time increases, the internal grease gradually wears down, dries out, or deteriorates, making it impossible to replenish grease. This leads to increased friction and abnormal temperature rise in critical transmission parts, resulting in excessive wear and decreased transmission efficiency. This can cause the torque protector to malfunction or lose its protective function. Therefore, to address the above problems, a split-type pulley lubrication filling structure and usage method for torque protectors are proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a split-type pulley lubrication oil filling structure and usage method for a torque protector, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a servo motor and a transmission belt are included. A torque limiter is fixedly installed at one end of the servo motor spindle. A pulley assembly is sleeved on the outside of the torque limiter. A permeation membrane is bonded to the inside of the pulley assembly. A bearing assembly is bonded to the inside of the permeation membrane. A transmission belt is sleeved on the outside of the pulley assembly. The pulley assembly includes a clamping plate. A mounting groove is formed on the inside of the clamping plate. A spring is fixedly connected to the inside of the mounting groove. A sealing plate is fixedly connected to one side of the clamping plate by bolts. An inter-plate hole is formed on the inside of the clamping plate. A rim assembly is welded to the side of the clamping plate away from the sealing plate. A toothed block is embedded in the inside of the rim assembly. A hollow cap is installed on the inside of the rim assembly. An inter-cap hole is formed on the outside of the hollow cap. The inside of the rim assembly is in contact with the side of the permeation membrane away from the bearing assembly.

[0005] As a further optimization of the present invention, the mounting groove is tubular in shape, one end of the spring protrudes from the outside of the clamping plate and is fixedly connected to the sealing plate, and the vertical cross-section of the sealing plate is "L" shaped.

[0006] As a further optimization of the present invention, the toothed block is composed of two parts. The part of the toothed block disposed in the rim assembly is made of rubber. The side of the toothed block inside the rim assembly is fitted with a hollow cap, and the opening of the hollow cap faces the side away from the toothed block.

[0007] As a further optimization of the present invention, the rim assembly includes a rim body, a columnar hole is formed on the inner side of the rim body, and a slot is formed on the inner side of the rim body.

[0008] As a further optimization of the present invention, the columnar hole and the inter-plate hole are connected, the inner side of the slot is fitted to the outer side of the hollow cap, and the diameter of the cap hole is equal to the diameter of the inter-plate hole and the columnar hole.

[0009] As a further optimization of the present invention, the bearing assembly includes an outer ring, an annular groove on the outer side of the outer ring, a through hole in the outer ring, an inner ring assembly rotatably mounted on the inner side of the outer ring, balls rolling between the outer ring and the inner ring assembly, and a sealing cap engaged between the outer ring and the inner ring assembly.

[0010] As a further optimization of the present invention, the inner ring assembly includes an inner ring body, with multiple oil guide grooves on both sides of the inner ring body and an oil storage groove on the inner side of the inner ring body.

[0011] As a further optimization of the present invention, the oil guide grooves are arranged in a ring array and are evenly and equidistantly distributed. The oil guide grooves are connected to the oil storage tank. The oil storage tank is ring-shaped and the vertical cross-section of the oil storage tank is "8".

[0012] As a further optimization of the present invention, the permeation membrane is respectively attached to two sealing plates on both sides, and the permeation membrane has multiple permeation pores inside.

[0013] Split-type pulley lubrication filling structure and usage method of torque protector: Step 1: Installation of the pulley assembly: First, adhere the permeation membrane to the outside of the bearing assembly. Then, install the bearing assembly inside the pulley assembly, fixing the outer ring to the rim body. Next, put the drive belt on the outside of the pulley assembly. Finally, install the bearing assembly on the torque limiter. Start the servo motor. The rotation of the servo motor spindle drives the torque limiter to rotate. The rotation of the torque limiter drives the pulley assembly to rotate through the bearing assembly. Observe whether the rotation of the pulley assembly can drive the drive belt to rotate. Step 2: Adding lubricating oil to the pulley assembly: Loosen the bolts used to fix the clamp plate and the sealing plate. At this time, the spring pushes the sealing plate to separate from the mounting groove. Then pour the lubricating oil into the gap between the sealing plate and the clamp plate. Next, tighten the bolts to fix the sealing plate and the clamp plate into one piece. The sealing plate squeezes the spring again and sinks into the mounting groove. The lubricating oil flows into the rim assembly through the plate hole and the columnar hole. Step 3: Lubricating oil is introduced into the bearing assembly during pulley assembly transmission: The transmission belt squeezes the toothed block, causing the toothed block to penetrate deep into the rim body and push the hollow cap to slide in the groove, so that the cap hole and columnar hole on the hollow cap are connected. The lubricating oil flowing into the rim assembly through the plate hole and columnar hole enters the interior of the hollow cap through the cap hole, and flows into the permeation membrane from the opening of the hollow cap. The lubricating oil that has permeated through the permeation membrane passes through the annular groove and through hole on the outer ring. Part of the lubricating oil covers the surface of the ball, and part of the lubricating oil enters the gap between the sealing cover and the inner ring assembly, and enters the oil reservoir through the oil guide groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a complete and efficient lubrication system is constructed through the set pulley assembly, realizing active lubrication management. The added lubricating oil can be accurately and controllably delivered to the core friction pairs that need lubrication the most, effectively maintaining the friction state of each component within the ideal range of full film lubrication or elastohydrodynamic lubrication.

[0015] 2. In this invention, a multi-level circulating lubrication and uniform penetration composite lubrication system is constructed by setting up a pulley assembly, a permeation membrane and a bearing assembly. This not only avoids the waste or pollution caused by excessive lubricating oil rushing into the bearing at the moment of startup, but also ensures that the lubricating oil can form a stable and micro-volume lubrication supply. It realizes intelligent storage, on-demand distribution and dynamic circulation of lubricant, which greatly improves lubrication efficiency and long-term effectiveness.

[0016] 3. In this invention, lubrication maintenance only requires loosening the fixing bolts of the clamp plate and the sealing plate, without disassembling the pulley and the transmission belt. The oiling operation is simple and quick. Throughout the process, the transmission belt can even be kept taut. The connection between the pulley assembly, the torque protector, and the motor shaft does not need to be changed. This simplifies the installation and maintenance process and reduces the overall operation and maintenance cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bearing assembly installation position structure of the present invention; Figure 3 for Figure 2 A schematic diagram of the cross-section structure; Figure 4 for Figure 2A schematic diagram of the exploded structure; Figure 5 This is a schematic diagram of the cross-sectional structure of the permeation membrane; Figure 6 This is a cross-sectional view of the pulley assembly of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a cross-sectional structural diagram of the rim assembly of the present invention; Figure 9 for Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the bearing assembly structure of the present invention; Figure 11 This is an exploded structural diagram of the bearing assembly of the present invention; Figure 12 This is a cross-sectional structural diagram of the bearing assembly of the present invention.

[0018] Figure 13 for Figure 12 Enlarged structural diagram at point C.

[0019] In the diagram: 1. Servo motor; 2. Torque limiter; 3. Pulley assembly; 31. Clamping plate; 32. Mounting groove; 33. Spring; 34. Sealing plate; 35. Plate hole; 36. Rim assembly; 361. Rim body; 362. Columnar hole; 363. Slot; 37. Tooth block; 38. Hollow cap; 39. Cap hole; 4. Permeable membrane; 5. Bearing assembly; 51. Outer ring; 52. Annular groove; 53. Through hole; 54. Inner ring assembly; 541. Inner ring body; 542. Oil guide groove; 543. Oil reservoir; 55. Ball bearing; 56. Sealing cap; 6. Drive belt. Detailed Implementation

[0020] Please see Figures 1-13 The present invention provides a technical solution: The torque protector features a split-type pulley lubrication system and its usage method, including a servo motor 1 and a transmission belt 6. A torque limiter 2 is fixedly mounted on one end of the servo motor 1's main shaft. A pulley assembly 3 is fitted on the outside of the torque limiter 2. A permeable membrane 4 is bonded to the inside of the pulley assembly 3. A bearing assembly 5 is bonded to the inside of the permeable membrane 4. A transmission belt 6 is fitted on the outside of the pulley assembly 3. The pulley assembly 3 includes a clamping plate 31. An installation groove 32 is opened on the inside of the clamping plate 31. A spring 33 is fixedly connected to the inside of the installation groove 32. A sealing plate 34 is fixedly connected to one side of the clamping plate 31 by bolts. An inter-plate hole 35 is opened on the inside of the clamping plate 31. A rim assembly 36 is welded to the side of the clamping plate 31 away from the sealing plate 34. A toothed block 37 is embedded on the inside of the rim assembly 36. A hollow cap 38 is installed on the inside of the rim assembly 36. An inter-cap hole 39 is opened on the outside of the hollow cap 38. The inside of the rim assembly 36 is in contact with the side of the permeable membrane 4 away from the bearing assembly 5.

[0021] As a further implementation of this solution, the mounting groove 32 is tubular in shape, with one end of the spring 33 protruding from the outside of the clamping plate 31 and fixedly connected to the sealing plate 34. The sealing plate 34 has an "L" shaped vertical section. The shape of the mounting groove 32 provides guidance for the compression and reset of the spring 33 and does not interfere with the installation of the bolts used to connect the sealing plate 34 and the clamping plate 31. The shape of the sealing plate 34 enables it to maintain better stability when separated from and fitted with the clamping plate 31.

[0022] As a further implementation of this solution, the toothed block 37 consists of two parts. The part of the toothed block 37 set in the rim assembly 36 is made of rubber. The side of the toothed block 37 inside the rim assembly 36 is in contact with the hollow cap 38. The opening of the hollow cap 38 faces the side away from itself from the toothed block 37. The design of the toothed block 37 allows a portion to rub against the drive belt 6 sleeved on the outside of the pulley assembly 3, thus improving the transmission between the pulley assembly 3 and the drive belt 6. Furthermore, when the drive belt 6 exerts a force on the toothed block 37, more of the toothed block 37... The hollow cap 38 can be moved by penetrating deep into the rim assembly 36. Since the part of the toothed block 37 in the rim assembly 36 is made of rubber, the part of the toothed block 37 in the rim assembly 36 can form a good seal with the rim assembly 36, preventing the lubricating oil injected into the rim assembly 36 from flowing out to the outside of the toothed block 37 and affecting the coefficient of friction of the contact surface between the toothed block 37 and the drive belt 6. The opening of the hollow cap 38 faces the side away from the toothed block 37, so that the lubricating oil inside can only flow out from the side away from the toothed block 37.

[0023] As a further implementation of this solution, the rim assembly 36 includes a rim body 361. A columnar hole 362 and a slot 363 are formed on the inner side of the rim body 361. The columnar hole 362 is connected to the inter-plate hole 35. The inner side of the slot 363 fits against the outer side of the hollow cap 38. The diameter of the cap hole 39 is equal to the diameters of the inter-plate hole 35 and the columnar hole 362. The design that the columnar hole 362 is connected to the inter-plate hole 35 allows the inter-plate hole 35 to serve as a fluid channel for lubricating oil to be introduced into the rim assembly 36 through the columnar hole 362. The design that the inner side of the slot 363 fits against the outer side of the hollow cap 38 allows the hollow cap... The sliding of the hollow cap 38 inside the slot 363 is more stable. When the rim assembly 36 rotates, the centrifugal force on the hollow cap 38 enables it to exert a force on the other components in the rim assembly 36 radially along the rotation path of the rim assembly 36. The setting of the cap hole 39 allows the lubricating oil entering the rim assembly 36 to enter the hollow cap 38 through it. Under the same rotation conditions, the more lubricating oil in the hollow cap 38, the greater its mass and the greater the centrifugal force it experiences, thus enabling it to reset and preventing the rim assembly 36 from inputting too much lubricating oil into the hollow cap 38 through the plate hole 35 and the columnar hole 362 during rotation.

[0024] As a further implementation of this solution, the bearing assembly 5 includes an outer ring 51, with an annular groove 52 on the outer side of the outer ring 51 and a through hole 53 in the outer ring 51. An inner ring assembly 54 is rotatably mounted on the inner side of the outer ring 51, and balls 55 are rolled between the outer ring 51 and the inner ring assembly 54. A sealing cap 56 is engaged between the outer ring 51 and the inner ring assembly 54. The inner ring assembly 54 includes an inner ring body 541, with multiple oil guide grooves 542 on both sides of the inner ring body 541 and an oil storage groove 543 on the inner side of the inner ring body 541. The multiple oil guide grooves 542 are evenly distributed in a ring array, and the oil guide grooves 542 and the oil storage groove 543 are connected. The oil storage groove 543 is annular in shape and stores oil. The vertical cross-section of groove 543 is "8" shaped. The opening of the annular groove 52 and through hole 53 allows the lubricating oil adhering to the surface of the outer ring 51 to be applied to the surface of the ball 55, lubricating the surface of the ball 55, and entering the inner ring assembly 54. The design of the oil guide groove 542 and the oil reservoir 543 being connected allows the lubricating oil entering the inner ring assembly 54 to be stored. The shape of the oil reservoir 543 allows some of the lubricating oil to be thrown out of the oil reservoir 543 through the oil guide groove 542 when the bearing assembly 5 rotates. After being blocked by the sealing cover 56, it will be applied to the surface of the ball 55 again, making the lubricating oil on the surface of the ball 55 more even.

[0025] As a further implementation of this solution, the permeation membrane 4 is attached to two sealing plates 34 on both sides. The permeation membrane 4 has multiple permeation pores inside. The position of the permeation membrane 4 is set so that its position can be more stable and precise. Through its attachment to different components and the squeezing of other components, some of its internal permeation pores are closed, preventing lubricating oil from passing through. However, the unsqueezed parts can still absorb and permeate lubricating oil evenly, achieving a uniform lubrication effect.

[0026] Workflow: First, the permeation membrane 4 is bonded to the outside of the bearing assembly 5. Then, the bearing assembly 5 is installed inside the pulley assembly 3, fixing the outer ring 51 to the rim body 361. Next, the drive belt 6 is fitted onto the outside of the pulley assembly 3. Finally, the bearing assembly 5 is installed on the torque limiter 2. The servo motor 1 is started, and the rotation of the servo motor 1 spindle drives the torque limiter 2 to rotate. The rotation of the torque limiter 2 drives the pulley assembly 3 to rotate through the bearing assembly 5. Observe whether the rotation of the pulley assembly 3 can drive the drive belt 6 to rotate. Loosen the bolts used to fix the clamping plate 31 and the sealing plate 34. At this time, the spring 33 pushes the sealing plate 34 to separate from the mounting groove 32. Then, pour lubricating oil into the gap between the sealing plate 34 and the clamping plate 31. Then, tighten the bolts to fix the sealing plate 34 and the clamping plate 31 back into one piece. The sealing plate 34 compresses the spring again. Spring 33 is inserted into mounting groove 32. Lubricating oil flows into rim assembly 36 through plate hole 35 and columnar hole 362. Drive belt 6 squeezes tooth block 37, causing tooth block 37 to penetrate into rim body 361 and push hollow cap 38 to slide in slot 363, so that cap hole 39 on hollow cap 38 is connected to columnar hole 362. Lubricating oil flowing into rim assembly 36 through plate hole 35 and columnar hole 362 enters hollow cap 38 through cap hole 39 and flows into permeation membrane 4 from the opening of hollow cap 38. Lubricating oil that permeates through permeation membrane 4 passes through annular groove 52 and through hole 53 on outer ring 51. Part of the lubricating oil covers the surface of ball 55, and part of the lubricating oil enters the gap between sealing cover 56 and inner ring assembly 54, and enters oil reservoir 543 through oil guide groove 542.

[0027] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A split-type pulley lubrication oil filling structure for a torque protector, comprising a servo motor (1) and a transmission belt (6), characterized in that: A torque limiter (2) is fixedly installed at one end of the spindle of the servo motor (1). A pulley assembly (3) is sleeved on the outside of the torque limiter (2). A permeable membrane (4) is bonded to the inside of the pulley assembly (3). A bearing assembly (5) is bonded to the inside of the permeable membrane (4). A transmission belt (6) is sleeved on the outside of the pulley assembly (3). The pulley assembly (3) includes a clamping plate (31), an installation groove (32) is provided on the inner side of the clamping plate (31), a spring (33) is fixedly connected to the inner side of the installation groove (32), a sealing plate (34) is fixedly connected to one side of the clamping plate (31) by bolts, an inter-plate hole (35) is provided on the inner side of the clamping plate (31), a rim assembly (36) is welded to the side of the clamping plate (31) away from the sealing plate (34), a toothed block (37) is embedded in the inner side of the rim assembly (36), a hollow cap (38) is installed in the inner side of the rim assembly (36), and an inter-cap hole (39) is provided on the outer side of the hollow cap (38). The inner side of the rim assembly (36) is attached to the side of the permeation membrane (4) away from the bearing assembly (5).

2. The split-type pulley lubrication oil filling structure of the torque protector according to claim 1, characterized in that: The mounting groove (32) is tubular in shape. One end of the spring (33) protrudes from the outside of the clamp (31) and is fixedly connected to the sealing plate (34). The vertical section of the sealing plate (34) is "L" shaped.

3. The split-type pulley lubrication oil filling structure of the torque protector according to claim 1, characterized in that: The tooth block (37) consists of two parts. The part of the tooth block (37) set in the rim assembly (36) is made of rubber. The side of the tooth block (37) inside the rim assembly (36) is in contact with the hollow cap (38). The opening of the hollow cap (38) faces the side away from the tooth block (37).

4. The split-type pulley lubrication oil filling structure of the torque protector according to claim 1, characterized in that: The rim assembly (36) includes a rim body (361), a columnar hole (362) is provided on the inner side of the rim body (361), and a slot (363) is provided on the inner side of the rim body (361).

5. The split-type pulley lubrication oil filling structure of the torque protector according to claim 4, characterized in that: The columnar hole (362) is connected to the inter-plate hole (35), the inner side of the slot (363) is fitted to the outer side of the hollow cap (38), and the diameter of the cap hole (39) is equal to the diameter of the inter-plate hole (35) and the columnar hole (362).

6. The split-type pulley lubrication oil filling structure of the torque protector according to claim 1, characterized in that: The bearing assembly (5) includes an outer ring (51), an annular groove (52) is provided on the outer side of the outer ring (51), a through hole (53) is provided in the outer ring (51), an inner ring assembly (54) is rotatably installed on the inner side of the outer ring (51), a ball (55) is rolled between the outer ring (51) and the inner ring assembly (54), and a sealing cap (56) is engaged between the outer ring (51) and the inner ring assembly (54).

7. The split-type pulley lubrication oil filling structure of the torque protector according to claim 6, characterized in that: The inner ring assembly (54) includes an inner ring body (541), with multiple oil guide grooves (542) on both sides of the inner ring body (541) and an oil storage groove (543) on the inner side of the inner ring body (541).

8. The split-type pulley lubrication oil filling structure of the torque protector according to claim 7, characterized in that: Multiple oil guide grooves (542) are evenly distributed in a ring array. The oil guide grooves (542) are connected to the oil storage tank (543). The oil storage tank (543) is ring-shaped and has a vertical cross-section of "8".

9. The split-type pulley lubrication oil filling structure of the torque protector according to claim 1, characterized in that: The permeation membrane (4) is attached to two sealing plates (34) on both sides, and the permeation membrane (4) has multiple permeation pores inside.

10. A method of using the split-type pulley lubrication oil filling structure of the torque protector according to any one of claims 1-9, characterized in that: S1: Installation of pulley assembly (3): First, attach the permeation membrane (4) to the outside of the bearing assembly (5), then install the bearing assembly (5) inside the pulley assembly (3) so that the outer ring (51) is fixed to the rim body (361), then put the transmission belt (6) on the outside of the pulley assembly (3), and finally install the bearing assembly (5) on the torque limiter (2). Start the servo motor (1), the main shaft of the servo motor (1) rotates and drives the torque limiter (2) to rotate. The rotation of the torque limiter (2) drives the pulley assembly (3) to rotate through the bearing assembly (5). Observe whether the rotation of the pulley assembly (3) can drive the transmission belt (6) to rotate. S2: Adding lubricating oil to the pulley assembly (3): Loosen the bolts used to fix the clamp plate (31) and the sealing plate (34). At this time, the spring (33) pushes the sealing plate (34) to separate from the mounting groove (32). Then pour the lubricating oil into the gap between the sealing plate (34) and the clamp plate (31). Then tighten the bolts to fix the sealing plate (34) and the clamp plate (31) back into one piece. The sealing plate (34) squeezes the spring (33) again and sinks into the mounting groove (32). The lubricating oil flows into the rim assembly (36) through the plate hole (35) and the columnar hole (362). S3: When the pulley assembly (3) is in operation, lubricating oil is introduced into the bearing assembly (5): The drive belt (6) squeezes the tooth block (37), causing the tooth block (37) to penetrate into the rim body (361) and push the hollow cap (38) to slide in the slot (363), so that the cap hole (39) on the hollow cap (38) is connected to the columnar hole (362). The lubricating oil flowing into the rim assembly (36) through the plate hole (35) and the columnar hole (362) passes through the cap hole. The hole (39) enters the interior of the hollow cap (38) and flows into the permeation membrane (4) from the opening of the hollow cap (38). The lubricating oil that permeates through the permeation membrane (4) passes through the annular groove (52) and through hole (53) on the outer ring (51). Part of the lubricating oil covers the surface of the ball (55), and part of the lubricating oil enters the gap between the sealing cap (56) and the inner ring assembly (54), and enters the oil storage tank (543) through the oil guide groove (542).

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