Reduction gearbox circulating purification running-in device and running-in method

Abstract

The invention discloses a reduction gearbox circulating purification running-in device and a running-in method, and belongs to the technical field of mechanical equipment running-in. The device comprises a circulating purification system and a control system. The circulation purification system is connected with an oil inlet and an oil outlet of the reduction gearbox through a pipeline to form a closed circulation loop and comprises an electromagnetic adsorption unit, a scrap iron separation unit and a liquid circulation unit. The electromagnetic adsorption unit adopts an electromagnet to efficiently capture scrap iron in the working liquid; the scrap iron separation unit achieves thorough separation of scrap iron and working liquid through double-cavity design or a mechanical scraping scheme, according to the mechanical scraping scheme, scrap iron scraping and washing barrels are matched with spiral scraping strips to conduct continuous scraping on the scrap iron on the surface of an electromagnet, and secondary adsorption is conducted through a strong magnetic material taking device. And the liquid circulating unit adopts a gear oil pump to convey the purified working liquid back to the reduction gearbox again. The control system achieves coordination control of running-in parameters and the purification process through a PLC, a liquid level sensor, a pressure sensor and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of washing equipment, and in particular to a worm gear reducer circulation purification running-in device and a running-in method. Background Art

[0002] Traditional worm gear running-in is typically performed in a non-assembled state, meaning the worm gear components are not installed in the final gearbox, but rather run-in individually on specialized running-in equipment. This running-in method has significant drawbacks: it cannot fully simulate the operating environment of the worm gear in an actual gearbox, including key operating parameters such as the lubricating oil circulation path, temperature distribution, and load distribution; the running-in environment is relatively open, making it difficult to precisely control the cleanliness and circulation status of the working fluid; and due to differences from actual operating conditions, a second run-in is often required after assembly, increasing production cycle time and costs.

[0003] In contrast, installing the worm gear directly in the agricultural machinery gearbox for installation and running-in has significant advantages: it can fully simulate the actual working conditions to ensure that the running-in effect is consistent with the actual use requirements; form a closed lubrication circulation system, which is convenient for precise control of the running-in parameters; avoid the need for secondary running-in and improve production efficiency.

[0004] However, installation run-in presents the technical challenge of ensuring clean working fluid circulation. During the run-in process, large amounts of metal chips generated by friction between the meshing surfaces mix into the lubricating oil, forming abrasive impurities. Due to the high viscosity and relatively poor fluidity of the lubricating oil, the chips settle slowly in the oil, becoming suspended and difficult to separate. These fine chips, suspended in the oil, act as abrasives and continue to participate in the run-in process. Far from improving surface quality, they cause abnormal wear and compromise the run-in effect.

[0005] Existing cleaning technologies primarily rely on mechanical filtration or sedimentation separation, which are limited in their effectiveness at removing fine iron filings ranging from a few to tens of microns. While magnetic separation technology exists, most existing magnetic separation devices are static and lack self-cleaning capabilities. Accumulated iron filings on the surface of the magnetic components require manual removal, making continuous, automated operation impossible. Furthermore, the cleaning process often requires stopping the machine for run-in, making it impossible to perform both cleaning and run-in simultaneously, impacting overall efficiency. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that during the running-in process of the existing worm gear reducer, iron filings generated by the running-in will remain in the working fluid, reducing the running-in quality between the worm gear meshing surfaces, affecting the running-in effect, and making it impossible to achieve real-time purification and cleaning during the running-in process.

[0007] In order to solve the above technical problems, the present invention provides a reduction gearbox circulation purification running-in device, comprising: The break-in bench is used to carry the equipment to be broken in; the reduction gearbox is arranged on the break-in bench and has an oil inlet and an oil outlet; the locking mechanism is used to fix the reduction gearbox on the break-in bench; the power input assembly is used to drive the worm to rotate in the reduction gearbox; and the load assembly is used to apply load to the worm wheel in the reduction gearbox. The circulating purification system forms a closed circulation loop through the pipeline connection of the oil inlet and the oil outlet of the reduction gearbox and comprises: an electromagnetic adsorption unit used to perform electromagnetic adsorption on iron filings in the working liquid; an iron filings separation unit used to separate the adsorbed iron filings from the working liquid; and a liquid circulation unit used to deliver the purified working liquid back to the reduction gearbox. The control system is used to control the coordinated operation of the break-in process and the purification process.

[0008] Further, the circulating purification system comprises a collection shell, and the electromagnetic adsorption unit and the iron filings separation unit are arranged in the collection shell.

[0009] Further, the collection shell is divided into two independent working cavities by a cavity partition plate, and a first electromagnet and a second electromagnet are arranged in each working cavity, and a three-way electromagnetic valve is further arranged to control the flow switching of the working liquid between the two working cavities.

[0010] Further, the control system controls the three-way electromagnetic valve to automatically switch the two working cavities according to a preset time period, so that one working cavity is in an iron filings collection state and the other working cavity is in a self-cleaning state.

[0011] Further, the electromagnetic adsorption unit comprises a cylindrical adsorption electromagnet, and the adsorption electromagnet comprises an electromagnet and a stainless steel shell wrapped outside the electromagnet.

[0012] Further, the iron filings separation unit comprises an iron filings scraping cylinder movably sleeved on the outer periphery of the adsorption electromagnet and a driving assembly, the outer wall of the iron filings scraping cylinder is provided with a plurality of through holes, the inner wall is provided with a spiral scraping strip in a spiral shape, and the driving assembly is used to drive the iron filings scraping cylinder to rotate.

[0013] Further, the collection shell forms an oil purification area in the upper part and an iron filings precipitation area in the lower part through a partition plate, and a strong magnetic material taking device is arranged outside the iron filings precipitation area.

[0014] Further, the liquid circulation unit comprises a gear oil pump, and the gear oil pump is controlled to start and stop through a liquid level sensor and is used to pump and deliver the purified working liquid back to the reduction gearbox.

[0015] Further, the control system comprises a PLC controller, a liquid level sensor, a pressure sensor, and a time relay.

[0016] Further, the power input assembly comprises a servo motor, a speed reducer and a shaft coupling, or comprises a hydraulic motor and a universal shaft coupling.

[0017] To solve the above technical problems, the application further provides a circulating purification grinding method of a reduction gearbox, comprising the following steps: Step S1: grinding system preparation: The agricultural machinery gearbox is fixed on the grinding workbench through a locking mechanism, the power input assembly is started to drive the worm to rotate, and a preset load is applied to the worm gear through the load assembly to establish a worm and worm gear grinding condition; Step S2: start of the circulating purification system: The circulating purification system is started, and the work liquid containing iron filings flows out from the oil outlet of the agricultural machinery gearbox, enters the collection and cleaning cavity of the circulating purification system through the pipeline, and is purified; Step S3: electromagnetic adsorption purification: The work liquid enters the collection and cleaning cavity through the joint oil inlet in a tangent direction to form a spiral downward flow, and is divided into multiple streams when passing through the through holes on the outer wall of the iron filings scraping cylinder, so that the contact time with the magnetic field is increased, the iron filings are rapidly adsorbed on the surface of the stainless steel shell under the action of the strong magnetic field, and the adsorption response time is less than 0.1 seconds; Step S4: magnetization and agglomeration treatment: The iron filings are magnetized for a long time of 3-5 seconds on the surface of the stainless steel shell, the single iron filings are fully magnetized to obtain magnetism and are adsorbed on each other to form a stable agglomerated structure with an increased density of 30-50%, and the magnetic attraction force in the agglomerated structure makes the structure stable and not easy to be dispersed in the liquid flow again; Step S5: mechanical scraping and separation: The iron filings scraping cylinder is driven to rotate at a speed of 5-15 rpm through the driving assembly, the magnetized agglomerated iron filings on the surface of the stainless steel shell are continuously scraped off by the spiral scraping strip, the iron filings are pushed to the iron filings deposition area in a directional manner by the spiral pushing surface of the spiral scraping strip, and the iron filings are transported downward in a spiral track at a speed of 2-5 mm / s; Step S6: secondary magnetic field protection: A secondary magnetic field environment is formed in the iron filings deposition area by the strong magnetic material taking device to continuously adsorb the agglomerated iron filings in the deposition area, so that the agglomerated iron filings are prevented from re-dissolving in the work liquid and secondary pollution is avoided; Step S7: purified liquid backflow: The purified work liquid flows downward along the wall of the collection and cleaning cavity into the clean oil area, is extracted from the oil extraction port by the gear oil pump, and is returned to the oil inlet of the agricultural machinery gearbox through the oil return pipe to form a closed circulation loop; Step S8: intelligent control and adjustment: The control system monitors the system working status in real time through the PLC controller, liquid level sensor, pressure sensor and time relay, and controls the gear oil pump to automatically start and stop according to the liquid level in the clean oil area. It automatically starts when the purified oil reaches the set level and automatically stops when it is lower than the set level. Step S9: Dual-chamber switching purification (optional implementation): For the dual-chamber structure, the control system controls the three-way solenoid valve according to the preset time cycle to realize the automatic switching of the two working chambers. When one chamber is in the state of collecting and adsorbing iron chips, the other chamber is in the state of self-cleaning, realizing uninterrupted and efficient purification. Step S10: Synchronous rotation processing (optional implementation): A time-sharing control strategy is adopted. In the first stage, the adsorption electromagnet is energized and rotates synchronously with the scraping drum to perform spiral contact. In the second stage, the adsorption electromagnet is de-energized and stops rotating, while the scraping drum continues to rotate for independent scraping. Among them, through the above-mentioned cyclic purification and running-in process, the primary iron chip separation efficiency is achieved at more than 95%, and the comprehensive separation efficiency reaches more than 99.9% after secondary separation by the strong magnetic material extractor. The iron chip content in the working fluid after purification is less than 10 mg / L, ensuring that the worm gear always works in a clean and lubricated environment during the running-in process.

[0018] The beneficial effects of the present invention are: 1. By establishing a closed loop with the reduction gearbox and a circulating purification system, the system overcomes the technical challenges of traditional run-in, where residual iron chips deteriorate the lubrication environment and reduce run-in quality. An electromagnetic adsorption unit efficiently captures iron chips in the working fluid, and a chip separation unit is used to completely separate them from the working fluid, ensuring that the worm gear is always run-in in a clean, lubricated environment. The dual-chamber design automatically switches between chambers, enabling continuous purification. While one chamber is collecting iron chips, the other is simultaneously self-cleaning, improving equipment utilization.

[0019] 2. The mechanical scraping solution uses a spiral scraper to continuously scrape off the iron chips adsorbed on the surface of the electromagnet. At the same time, the rotation of the iron chip scraping and washing cylinder causes the working liquid to quickly spread out on the surface of the stainless steel shell to form a large area of ​​dynamic contact. The processing area is expanded by 3-5 times compared with static adsorption, which significantly improves the efficiency of electromagnetic adsorption. The spiral push surface is used to directionally push the scraped iron chips to the sedimentation area. The strong magnetic material extractor forms a secondary magnetic field in the sedimentation area to capture and fix the scraped iron chips, thereby realizing the physical separation of iron chips and working liquid. At the same time, the electromagnet is completely encapsulated by the stainless steel shell to protect it from direct contact with the working liquid and iron chips, effectively extending the service life of the equipment.

[0020] 3. The PLC controller in the automation control system is responsible for the logical coordination of the running-in speed, load size and purification cycle. The liquid level sensor monitors the changes in the liquid level in the clean oil area in real time and automatically controls the start and stop of the gear oil pump. The pressure sensor monitors the pressure state of the circulation loop to prevent blockage. The time relay controls the switching between the dual chambers and the opening and closing of the cleaning water flow according to the preset cycle. Through these control methods, the running-in process parameters are organically combined with the purification process parameters, so that the running-in operation and purification and cleaning can be carried out simultaneously, avoiding the problem of stopping the machine to change the lubricating oil in traditional running-in, and realizing the continuous operation of the speed reducer running-in. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of Example 1; Figure 2 It is a plan view of Example 1; Figure 3 This is a schematic diagram of the disassembled structure of the iron filings collection and cleaning structure in Example 2; Figure 4 Schematic diagram of the internal structure of the iron filings collection and cleaning structure in Example 2.

[0022] Markings in the figure: Example 1: 1. Running-in workbench; 2. Agricultural machinery gearbox; 21. Oil inlet; 22. Oil outlet; 3. Locking mechanism; 4. Power input assembly; 5. Load assembly; 6. Iron chip collection and cleaning mechanism; 7. Control system; 61. Collection housing; 62. Cavity partition; 63. First electromagnet; 64. Second electromagnet; 65. Three-way solenoid valve; Example 2:

[0023] Iron chip collection and cleaning structure 10, collection and cleaning shell 101, main shell 1011, first end cover 1012, second end cover 1013, collection and cleaning chamber 1014, adsorption electromagnet 102, electromagnet 1021, stainless steel shell 1022, support connecting rod 1023, iron chip scraping cylinder 103, through hole 1031, spiral scraping bar 1032, drive assembly 104, driving gear shaft 1041, driving internal gear 1042, row oil inlet 105, isolation plate 106, clean oil area 1061, iron chip precipitation area 1062, oil extraction port 107, strong magnetic material extractor 108, gear oil pump 8. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: Example 1, as Figure 1As shown, a worm gear reduction box circulating self-cleaning running-in device includes a running-in workbench 1; an agricultural machinery transmission 2 disposed on the surface of the running-in workbench 1 and a locking mechanism 3 for locking the agricultural machinery transmission 2; a power input assembly 4 for driving the worm to rotate; a load assembly 5 for controlling the torque of the worm gear; and an iron chip collection and cleaning mechanism 6; and a control system 7 for controlling the operation of the entire device. The agricultural machinery gearbox 2 has an oil inlet 21 and an oil outlet 22 , and the iron chip collecting and cleaning mechanism 6 is connected to the oil inlet 21 and the oil outlet 22 through pipelines to form a closed circulation loop.

[0025] The shell of the iron chip collecting and cleaning mechanism 6 is provided with two independent working chambers, each of which is provided with an electromagnet. The iron chips in the working fluid can be collected by circulating the working fluid in the iron chip collecting and cleaning mechanism 6 and the agricultural machinery gearbox 2.

[0026] like Figure 2 As shown, in this embodiment, the iron chip collecting and cleaning mechanism 6 includes a collecting shell 61, a cavity partition 62 that divides the interior of the collecting shell 61 into two cavities, a first electromagnet 63 and a second electromagnet 64 respectively arranged in the two cavities, and a three-way solenoid valve 65 for controlling the flow direction switching of the working fluid between the two cavities.

[0027] The two chambers each have independent oil ports, water inlets, and outlets. This dual-chamber configuration provides the entire chip collection and cleaning mechanism 6 with two chip collection areas. The core advantage of this design is that it enables continuous cleaning and purification during the run-in process. While either chamber is in the chip collection and adsorption state, the other chamber can be in a self-cleaning state. Control system 7 automatically switches between the two chambers by controlling three-way solenoid valve 65 over a preset time period (e.g., 30 minutes). This cyclical switching of the cleaning modes between the two chambers enables uninterrupted and efficient collection and real-time cleaning of chip residues in the working fluid.

[0028] Since both cavities produce cleaned oil, this cleaned and purified oil will return to the interior of the agricultural machinery gearbox 2, ensuring that the worm gear always works in a clean lubricating environment during the running-in process, avoiding the presence of iron filings that reduce the running-in quality between the meshing surfaces of the worm gear.

[0029] The start and stop of the cleaning water flow is controlled by a solenoid valve. When a cavity enters the self-cleaning state, the iron filings on the surface of the electromagnet are deeply cleaned and flushed, and the cleaning wastewater is discharged through the drain for subsequent treatment.

[0030] The control system 7 includes a PLC controller, a liquid level sensor, a pressure sensor and a time relay, which are used to monitor the working status of the two chambers and control the start and stop and switching timing of the electromagnet and the solenoid valve.

[0031] The locking mechanism 3 can be a mechanical clamping device using a threaded clamping mechanism, which fixes the gearbox by manually or electrically rotating a clamping screw, or a clamping device driven by a hydraulic cylinder.

[0032] The power input assembly 4 can be a direct-connected motor drive in which a servo motor is directly connected to a reducer and then connected to a worm through a coupling, or a hydraulic motor is powered and connected to a worm through a universal coupling.

[0033] The load assembly 5 can be an eddy current brake system that applies an adjustable load to the worm gear using an eddy current brake, or a mechanical loading device that uses a spring loading or weight loading method.

[0034] Example 2:

[0035] See also Figures 3-4 The difference between this embodiment and embodiment 1 is that a new type of iron chip collection and cleaning structure 10 is provided to replace the iron chip collection and cleaning mechanism 6 in embodiment 1. This structure provides an adsorption electromagnet 102 and an iron chip scraping cylinder 103, so that the adsorption electromagnet 102 can adsorb iron chip impurities generated in the working fluid during the running-in process. The iron chip scraping cylinder 103 is then used to mechanically scrape the iron chips, thereby achieving a preliminary separation of the working fluid and the iron chips. A strong magnetic material extractor 108 is then provided to further stably adsorb the scraped iron chips, thereby completely separating the working fluid from the iron chips and achieving purification and cleaning of the working fluid. The gear oil pump 8 is then used to extract the purified working fluid for next use. The core advantages of this structure are: on the one hand, the working liquid is effectively blocked and diverted on the outer surface of the stainless steel shell 1022, avoiding direct impact on the internal electromagnet; as the iron scraping washing cylinder 103 rotates, the working liquid quickly spreads on the surface of the stainless steel shell 1022, forming a large area of ​​dynamic contact, and the processing area is expanded by 3-5 times compared with static adsorption; on the other hand, the electromagnet 1021 is completely encapsulated and protected, and does not directly contact the working liquid and iron filings, effectively extending its service life. In addition, this structure also has a unique advantage of magnetization aggregation: in the process of iron filings being adsorbed by the stainless steel shell and pushed into the sedimentation area, they form a cluster structure after being magnetized by the electromagnet for a long time. In this way, even if they re-contact the purified liquid in the sedimentation area, they are not easy to disperse again. The secondary magnetic field set in the sedimentation area can effectively prevent the iron filings from quickly dispersing and causing secondary pollution.

[0036] refer to Figure 3 、 Figure 4 The iron chip collecting and cleaning structure 10 includes: The collecting and cleaning shell 101 is assembled from a main shell 1011 and a first end cover 1012 and a second end cover 1013 at both ends thereof. A cylindrical collecting and cleaning chamber 1014 is formed in the hollow portion thereof to serve as a working space for collecting and cleaning iron chips. The adsorption electromagnet 102 is cylindrical and coaxially mounted in the collection and cleaning chamber 1014 and connected to the collection and cleaning housing 101 via a supporting connecting rod 1023. It includes an internal electromagnet 1021 and a stainless steel shell 1022 covering the outside of the electromagnet 1021. The stainless steel shell 1022 is 0.5 mm thick and has a smooth surface that does not affect the magnetic force. The magnetism of the electromagnet 1021 can be controlled by turning the power on and off, thereby adsorbing iron filings and impurities generated in the working liquid during the running-in process. The scrap iron scraping cylinder 103 is movably mounted on the outer periphery of the adsorption electromagnet 102. A plurality of through holes 1031 are evenly distributed on its outer wall so that the scrap iron can pass through the through holes 1031 and be adsorbed by the adsorption electromagnet 102. A plurality of spiral scraping strips 1032 are welded to its inner wall. There is a very small gap (0.1-0.2mm) between the spiral scraping strips 1032 and the outer wall of the adsorption electromagnet 102. In this embodiment, there are three spiral scraping strips 1032, which are evenly distributed at 120° to achieve full-cycle cleaning without dead angles. The driving assembly 104 is used to drive the iron chip scraping cylinder 103 to rotate, and includes a motor installed on the outside of the first end cover 1012 (the motor is not shown in the figure), a driving gear shaft 1041 connected to the motor, and a driving internal gear 1042 meshing with the driving gear shaft 1041. The driving internal gear 1042 is provided on the inner wall of the end of the iron chip scraping cylinder 103.

[0037] The upper part of the collection and cleaning shell 101 is connected to a plurality of parallel oil inlets 105, which are used to allow the working liquid containing iron filings and impurities to enter the collection and cleaning chamber 1014. In this embodiment, there are three parallel oil inlets 105, and they are all located directly above the adsorption electromagnet 102. The working liquid enters in a tangential direction, forming a spiral downward flow.

[0038] Furthermore, this structure realizes the purification and extraction of working fluid and the cleaning of iron filings through the following design.

[0039] The second end cover 1013 forms an oil clean area 1061 at the top and an iron chip precipitation area 1062 at the bottom in the collection and cleaning chamber 1014 by setting an isolation plate 106, wherein the spiral scraper 1032 can push the iron chips scraped from the bottom of the collection and cleaning chamber 1014 through the spiral push surface thereon and concentrate them in the iron chip precipitation area 1062.

[0040] The oil clean area 1061 is provided with an oil extraction port 107, which is connected to the gear oil pump 8 through an oil pipe, and is used to extract the purified working fluid and return it to the agricultural machinery gearbox 2 through the return oil pipe; a strong magnetic material collector 108 is detachably installed on the outside of the iron chip precipitation area 1062, which can efficiently capture and continuously absorb iron chips. The strong magnetic material collector 108 can control its magnetism by controlling its power on and off, and adjust the magnetism by controlling the current size, etc.

[0041] The gear oil pump 8 is started and stopped by a liquid level sensor. It automatically starts when the purified oil in the clean oil area 1061 reaches a set liquid level, and automatically stops when it is lower than the set liquid level.

[0042] The specific working process of this embodiment is as follows: The working liquid containing iron filings sequentially enters from the row of oil inlets 105, and the working liquid is divided into multiple streams when passing through the through holes 1031 on the outer wall of the iron filings scraping cylinder 103, thereby increasing the contact time with the magnetic field, and then flows through the surface of the adsorption electromagnet 102. In this process, the iron filings are rapidly adsorbed on the surface of the stainless steel shell 1022 under the action of the strong magnetic field (response time <0.1 second), and then the iron filings scraping cylinder 103 (rotation speed 5-15 rpm) is rotated, and the iron filings are continuously scraped off through the spiral scraping strips 1032 on the iron filings scraping cylinder 103, and the iron filings are pushed and moved in a directional manner and concentrated in the iron filings precipitation area 1062 by the spiral pushing surface of the spiral scraping strips 1032, and the iron filings are transported downward in a spiral trajectory at a speed of about 2-5 mm / s. The key point is that the iron filings undergo important physical state changes during the long-time magnetization process (usually 3-5 seconds) on the surface of the adsorption electromagnet 102: the single iron filings are fully magnetized, acquire a certain magnetism, and are adsorbed to each other to form a structure with a higher density. These magnetized clusters have the following characteristics: ① The density of the clusters is increased by 30-50% compared with that of the single iron filings, and the settling velocity is significantly improved; ② The internal magnetic attraction of the clusters makes the structure stable and not easy to be dispersed again in the liquid flow; ③ When the clustered iron filings recombine with the purified working liquid in the iron filings precipitation area 1062, due to the stable cluster characteristics and the continuous magnetic field environment formed by the strong magnetic material taking device 108, the iron filings are effectively prevented from re-dissolving in the working liquid, thereby avoiding the risk of secondary pollution. The strong magnetic material taking device 108 also plays a role in forming a secondary magnetic field in the iron filings precipitation area 1062, continuously and quickly adsorbing the iron filings in the iron filings precipitation area 1062, preventing the iron filings from re-dissolving in the working liquid, and avoiding incomplete purification of the working liquid. The purified working liquid gradually accumulates in the clean oil area 1061 after passing through the isolation plate 106, and flows downward along the wall of the collection and cleaning cavity 1014 to avoid secondary pollution, and is then pumped out from the oil body outlet 107 by the gear oil pump 8 for recycling. The whole process achieves a first separation efficiency of more than 95%, and after the secondary separation by the strong magnetic material taking device 108, the comprehensive separation efficiency reaches more than 99.9%, and the content of iron filings in the purified working liquid is less than 10 mg / L. The design establishes a three-stage treatment mechanism of "magnetization-clusterization-stabilization": the first stage realizes the strong magnetic adsorption and full magnetization of the iron filings by the adsorption electromagnet 102; the second stage promotes the formation of stable clusters of the magnetized iron filings by the mechanical action of the spiral scraping strips 1032; and the third stage ensures the long-term stability of the clustered iron filings by forming a continuous magnetic field environment in the precipitation area by the strong magnetic material taking device 108.

[0043] Due to the magnetized clumping characteristics of iron filings, the strong magnetic material extractor 108 should be cleaned after it has been running for 3-4 months. Specifically, the second end cover 1013 is unscrewed to remove it, so that the strong magnetic material extractor 108 and the iron filings adsorbed by it in the iron filing precipitation area 1062 are also taken out. The strong magnetic material extractor 108 is then removed and powered off, and flushed with clean water or other liquids to quickly remove the iron filings. At the same time, the adsorption electromagnet 1021 can also be controlled to be powered off, and it and the collection and cleaning chamber 1014 can be flushed to achieve regular cleaning of the device.

[0044] Example 3:

[0045] This embodiment provides an improved synchronous rotation type iron chip collection and cleaning structure based on the embodiment 2, through the coaxial synchronous rotation of the adsorption electromagnet 102 and the iron chip scraping drum 103 in conjunction with the time-sharing control strategy, the core of which is: using a component-sharing design to reduce costs and space occupancy, achieving full contact and separation of liquid and solid through spiral flow, and using a time-sharing strategy to make the collection and processing processes relatively independent.

[0046] Structural improvement: The adsorption electromagnet 102 is connected to the drive assembly 104 through the central transmission shaft to achieve overall rotation, and shares a drive system with the iron chip scraper cylinder 103; the key improvement of the iron chip scraper cylinder 103 is that a drainage trough is provided at the root of the spiral scraper 1032, and the drainage trough is opened in sections along the spiral trajectory of the spiral scraper, and the spiral scraper 1032 retains sufficient physical height to ensure effective blocking and pushing of iron chips; the row of oil inlets 105 are all arranged at one end away from the iron chip precipitation area 1062, and 2-4 oil inlets are evenly distributed in a ring shape, so that the working liquid containing iron chips enters from the far end and flows in a spiral circle along the inner wall of the collection and cleaning chamber 1014 under the coordinated action of centrifugal force and gravity, greatly increasing the contact time between the liquid and the stainless steel shell 1022.

[0047] The spiral scraper 1032 realizes component sharing and has dual functions: in the first function (synchronization stage), the drainage groove at the root of the spiral scraper guides the liquid to flow in an orderly manner along the spiral trajectory, and at the same time the solid part of the scraper blocks the iron filings that have been magnetically attracted to prevent them from being washed away by the liquid flow; in the second function (processing stage), the spiral scraper mechanically scrapes off the accumulated iron filings and pushes them to the iron filings precipitation area 1062 through the spiral push surface. One component plays the triple role of guiding, blocking and scraping at different stages.

[0048] The time-sharing control working process: the first stage is the synchronous spiral contact stage, the remote row oil inlet 105 is opened, the adsorption electromagnet 102 is powered on and works synchronously with the scraping cylinder 103, the working liquid is thrown to the inner wall of the collection and cleaning cavity 1014 under the action of centrifugal force and spirally descends along the wall, the contact path is increased by 3-5 times compared with vertical descent, the liquid orderly flows along the liquid discharge groove at the root of the spiral scraping strip 1032, and the solid part of the scraping strip blocks the adsorbed iron filings to prevent them from falling off again; the second stage is the independent scraping treatment stage, when the iron filings on the surface of the stainless steel shell 1022 reach the preset thickness or according to the preset period, the remote row oil inlet 105 is closed, the adsorption electromagnet 102 is powered off and stops rotating, the iron filings scraping cylinder 103 continues to rotate, the spiral scraping strip 1032 changes from the guiding and blocking function to the mechanical scraping function, and pushes the iron filings to the iron filings deposition area 1062.

[0049] The embodiment realizes the full liquid-solid contact separation and efficient iron filings treatment through the double common functions of the spiral scraping strip and the oil inlet layout optimization, and is especially suitable for cost-sensitive and space-limited application occasions.

[0050] The specific embodiments described in the present document are only illustrations of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A worm gear reducer circulating self-cleaning running-in device, characterized in that: include: Running-in workbench (1); The agricultural machinery gearbox (2) to be run-in has an oil inlet and an oil outlet and is fixed on the surface of the running-in workbench (1); A pressing element (3) is used to lock the agricultural machinery gearbox (2); a power input assembly (4) is used to drive the worm in the agricultural machinery gearbox (2) to rotate; a load assembly (5) is used to apply a load to the worm wheel in the agricultural machinery gearbox (2); a circulating self-cleaning assembly, the oil inlet and the oil outlet of the agricultural machinery gearbox (2) are both connected to the circulating self-cleaning assembly, and the circulating self-cleaning assembly includes: a collecting chamber for receiving iron-containing working fluid from the agricultural machinery gearbox (2); an electromagnet, arranged in the collecting chamber, for electromagnetically adsorbing iron in the working fluid; an iron removing unit for removing iron adsorbed on the electromagnet; and a liquid conveying unit for conveying the purified working fluid back to the agricultural machinery gearbox (2).

2. The worm gear reducer circulating self-cleaning running-in device according to claim 1, characterized in that: The circulating self-cleaning component is an iron chip collecting and cleaning mechanism (6), and the iron chip collecting and cleaning mechanism (6) comprises: A collecting shell (61) is provided, the interior of which is divided into a first cavity (63) and a second cavity (64) by a cavity partition (62); a control slide bar (65) is slidably arranged inside the collecting shell (61); a first electromagnet (66) and a second electromagnet (67) are respectively arranged on the control slide bar (65) in the areas of the first cavity (63) and the second cavity (64).

3. The worm gear reducer circulating self-cleaning running-in device according to claim 2, characterized in that: The side wall of the first cavity (63) is provided with a second oil inlet (631), a second oil outlet (632), a first water inlet (633), a first water outlet (634) and a first diversion port (6331); the side wall of the second cavity (64) is provided with a third oil inlet (641), a third oil outlet (642), a second water inlet (643), a second water outlet (644) and a second diversion port (6431).

4. The worm gear reducer circulating self-cleaning running-in device according to claim 3, characterized in that: A waterway limiting structure (60) is provided inside the first water inlet (633) and the second water inlet (643), and the waterway limiting structure (60) comprises: a piston rod (602) which is slidably arranged inside the water inlet, the interior of which is hollow and provided with a third guide port (603); a return spring (601) which is arranged on the top of the piston rod (602); and the first electromagnet (66) and the second electromagnet (67) can push the piston rod (602) to move when sliding, thereby controlling the conduction state between the third guide port (603) and the first guide port (6331) or the second guide port (6431).

5. The worm gear reducer circulating self-cleaning running-in device according to claim 2, characterized in that: The surface of the control slide rod (65) is provided with a valve stem assembly (69), and the valve stem assembly (69) includes: a first support column (691) and a second support column (692), which are arranged on the surface of the control slide rod (65) located in the first cavity (63); a third support column (695) and a fourth support column (696), which are arranged on the surface of the control slide rod (65) located in the second cavity (64); a first sealing plug (694), a second sealing plug (690), a third sealing plug (698), and a fourth sealing plug (699), which are respectively used to control the conduction state of the corresponding oil outlet and water outlet.

6. The worm gear reducer circulating self-cleaning running-in device according to claim 2, characterized in that: The interior of the cavity partition (62) is divided into a first water storage area (621) and a second water storage area (622) by a water channel partition (620), and a plurality of first cleaning pipelines (651) and second cleaning pipelines (652) are respectively provided on both sides of the water channel partition (620), and cleaning nozzles (654) are provided on the surfaces of the cleaning pipelines.

7. The worm gear reducer circulating self-cleaning running-in device according to claim 1, characterized in that: The circulating self-cleaning component is an iron chip collecting and cleaning structure (10), which comprises: a collecting and cleaning shell (101), which is composed of a main shell (1011) and a first end cover (1012) and a second end cover (1013) located at both ends, and a collecting and cleaning chamber (1014) is formed inside; an adsorption electromagnet (102), which is coaxially installed in the collecting and cleaning chamber (1014), and comprises an electromagnet (1021) and a stainless steel shell (1022) covering the outside of the electromagnet; and an iron chip scraping cylinder (103), which is movably sleeved on the outer periphery of the adsorption electromagnet (102).

8. The worm gear reducer circulating self-cleaning running-in device according to claim 7, characterized in that: The outer wall of the scrap iron scraping cylinder (103) is evenly provided with a plurality of through holes (1031), and the inner wall is welded with a plurality of spiral scraping strips (1032). The drive assembly (104) is also included for driving the scrap iron scraping cylinder (103) to rotate.

9. The worm gear reducer circulating self-cleaning running-in device according to claim 8, characterized in that: The driving assembly (104) comprises: a motor installed outside the first end cover (1012); a driving gear shaft (1041) connected to the motor; and a driving internal gear (1042) meshing with the driving gear shaft (1041) and arranged on the inner wall of the end of the iron scrap scraping cylinder (103).

10. The worm gear reducer circulating self-cleaning running-in device according to claim 7, characterized in that: The upper portion of the collecting and cleaning housing (101) is connected to a plurality of parallel oil inlets (105); the second end cover (1013) forms an upper oil clean area (1061) and a lower iron chip precipitation area (1062) in the collecting and cleaning chamber (1014) through an isolation plate (106); the oil clean area (1061) is provided with an oil extraction port (107); and a strong magnetic material extractor (108) is detachably mounted on the outer side of the iron chip precipitation area (1062) for absorbing iron chips.

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