A high-strength self-lubricating slider and universal coupling with real-time temperature monitoring

Abstract

This invention discloses a high-strength self-lubricating slider and universal coupling with real-time temperature monitoring, belonging to the technical field of heavy-duty transmission equipment. It includes a slider body with a boss in the middle; mounting grooves are formed on both sides and the outer wall of the boss; an assembly through hole is formed in the middle of the boss; a flat sliding plate and an arc-shaped sliding plate are respectively installed in the mounting grooves on both sides of the slider body, with their thickness extending beyond the corresponding groove depth; a side sliding plate is installed in the mounting groove on the outer side of the boss; a copper sleeve is assembled in the assembly through hole of the slider body; a wireless temperature measurement component, including a wireless temperature sensor and an independent power supply module, is embedded in the side of the slider body, and the wireless temperature sensor is used to detect the internal temperature of the slider body. This invention solves the technical problems of existing integral copper alloy cast sliders, such as high cost, irreparability, complete reliance on external lubrication, easy wear and breakage, and inability to monitor operating status.

Description

Technical Field

[0001] This invention belongs to the field of heavy machinery transmission technology, specifically relating to a high-strength self-lubricating slider and universal coupling with real-time temperature monitoring. Background Technology

[0002] Sliding universal joints are core components of heavy industrial transmissions. Compared to cross-type universal joints, they have higher load-bearing capacity and better impact resistance, and are widely used in heavy plate rolling mills, steel mill rolling mills, and heavy-duty mining equipment under medium to high torque, variable angle, and strong impact conditions.

[0003] The slider is the core sliding friction pair and force-bearing component of the universal coupling. Currently, most sliders in the industry are made of integral cast copper alloy, which has the following unavoidable defects under long-term heavy-load use:

[0004] 1. High material costs: Traditional sliders are made of a single piece of copper. Once worn or scratched, they must be scrapped as a whole, with no repair value. This leads to a large consumption of spare parts and high maintenance costs for enterprises.

[0005] 2. Primarily reliant on external lubrication, resulting in poor adaptability to operating conditions: Existing slide blocks lack a built-in lubrication structure and rely mainly on externally supplied lubricating oil. Firstly, multiple lubrication lines are required, with continuous oil supply via external oil pipes. Secondly, in similar equipment in steel mills, the environment is filled with dust and experiences high temperatures, easily leading to unstable oil supply, uneven lubrication, and consequently, rapid wear, burning, or jamming of the slide block, reducing its service life.

[0006] 3. Low structural strength and easy to break under heavy load: Copper alloys themselves have limited strength, fatigue resistance and impact resistance. Under frequent impact loads in the rolling mill, they are prone to cracking, chipping and fracture, causing downtime accidents.

[0007] 4. Rotating moving parts cannot be monitored, and faults are completely unpredictable: The slider rotates continuously at high speed with the universal joint, which is a completely closed moving pair, and there are currently no corresponding monitoring methods. On-site inspections can only be carried out periodically, and it is impossible to monitor the friction and temperature rise in real time. Once lubrication fails, abnormal friction occurs, or jamming and overheating occurs, it will directly cause sudden equipment failure and mill shutdown.

[0008] Existing technologies also include improved solutions that employ external infrared temperature measurement or grease filling structures, such as CN201910130516.3, a wind turbine coupling with temperature detection function; however, because the slider is in a closed, high-speed rotating state, the external temperature measurement is difficult to align with the actual heat source, and the external oil filling line is prone to blockage or leakage under heavy load impact, thus failing to achieve reliable long-term maintenance-free operation.

[0009] In summary, to solve the above problems, this invention proposes a high-strength self-lubricating slider and universal coupling with real-time temperature monitoring. Summary of the Invention

[0010] To address the technical problems of existing integral cast copper sliders, such as high cost, short lifespan, reliance on external lubrication, and lack of monitoring capabilities, this invention provides a novel slider that is modular, high-strength, self-lubricating, and capable of real-time temperature monitoring and early warning. This achieves the technical effects of cost reduction, life extension, maintenance-free operation, monitoring capability, and repairability.

[0011] This invention does not directly improve the copper alloy by adding weight, but rather redefines the functional architecture of the slider: a high-strength alloy steel body serves as the base for support, the sliding friction surface is moved to the working surface of a detachable self-lubricating friction component, and the alloy steel body surface is removed from sliding contact by prioritizing contact between the working surface and the connecting structure; simultaneously, the temperature measuring point is embedded inside the slider body and located close to the actual heat source. This forms a decoupled structural system of "load bearing—friction—monitoring" that can be maintained separately, changing the structure of the traditional integral copper slider.

[0012] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0013] A high-strength self-lubricating slider with real-time temperature monitoring, comprising:

[0014] The slider body has a boss in the middle; mounting grooves are provided on both sides and the outer wall of the boss; and an assembly through hole is provided in the middle of the boss.

[0015] The flat slide and the arc slide are respectively installed in the mounting grooves on both sides of the slider body, and the thickness extends out of the corresponding mounting groove depth;

[0016] The side slide plate is installed in the mounting groove on the outside of the boss; the flat slide plate, the arc slide plate, and the side slide plate can all be detachably connected to the corresponding mounting groove.

[0017] The copper sleeve is interference-fitted into the mounting through hole of the slider body;

[0018] The wireless temperature measurement component, including a wireless temperature sensor and an independent power supply module, is embedded in the side of the slider body. The wireless temperature sensor is used to detect the internal temperature of the slider body.

[0019] The mounting groove of the present invention is located away from stress concentration points, and the sliding surfaces of the flat slide plate and the arc slide plate are higher than the rounded corners of the body to increase stress and avoid cracking.

[0020] Furthermore, the slider body is integrally formed from high-strength alloy steel, and after quenching and tempering, the yield strength of the material is not less than 400MPa, and the hardness is HRC28~35.

[0021] The mounting slots located at the flat sliding plate mounting position and the mounting slots located at the arc sliding plate mounting position are respectively provided with axial limiting surfaces and circumferential anti-rotation surfaces to limit displacement and rotation under working loads;

[0022] The mounting slot located at the side slide plate mounting position is provided with a circumferential anti-rotation surface.

[0023] Furthermore, the exposed surfaces of the slider body, except for the assembly mating surfaces, are all coated with an anti-corrosion composite coating.

[0024] Before coating, the exposed surfaces are sandblasted, with a surface roughness Ra of 6.3μm to 12.5μm and a cleanliness level of Sa2.5.

[0025] The anti-corrosion composite coating, from the inside out, includes:

[0026] A zinc-aluminum based anti-corrosion primer layer, 40μm–80μm thick, provides cathodic protection and strong adhesion. Zinc has a lower electrochemical potential than iron; when a zinc-containing coating is applied to a steel surface, the zinc preferentially oxidizes, sacrificing itself to protect the alloy steel substrate. The adhesive in the zinc-aluminum coating forms strong covalent bonds with the substrate, ensuring excellent adhesion.

[0027] The epoxy resin micaceous iron oxide intermediate layer, with a thickness of 60μm to 120μm, serves as a shielding and isolating agent, thickening for corrosion protection, and acting as a bridging agent between layers. The micaceous iron oxide anti-rust pigment has a lamellar structure, good chemical stability, and excellent anti-permeation shielding performance. It forms a dense labyrinthine structure within the coating, greatly enhancing the film's shielding performance. Located in the intermediate layer, it increases the overall thickness of the coating system, delaying the onset of electrochemical corrosion in the underlying layer.

[0028] The weather-resistant polyurethane topcoat layer, with a thickness of 30μm to 60μm, provides weather resistance, color retention, aging resistance, and aesthetic appeal. Utilizing aliphatic polyurethane topcoat with aliphatic isocyanate as a curing agent and hydroxyl acrylic resin as a base, it exhibits non-yellowing, gloss retention, and anti-chalking properties, achieving weather resistance and color retention. The polyurethane topcoat also possesses excellent UV resistance and gloss, contributing to aging resistance and aesthetic appeal.

[0029] The inner wall of the mounting cavity used to install the wireless temperature measurement component is coated with an insulating and corrosion-resistant lining, which is a polyamide or polyurea coating with a thickness of not less than 200 μm.

[0030] The planar sliding plate, arc sliding plate, side sliding plate, and copper sleeve of the present invention all include a copper alloy matrix and a solid lubricating medium embedded in the copper alloy matrix, and their working surfaces protrude 2mm to 3mm from the surface of the slider body after assembly; the solid lubricating medium is graphite or molybdenum disulfide, and the embedding rate on the friction working surface is 15% to 25%.

[0031] The flat slide, the arc slide, and the side slide are all locked and fixed in the mounting groove by internal hexagon countersunk screws; the head of the internal hexagon countersunk screw is recessed 3mm to 4mm below the outer surface of the corresponding mounting slide; the internal hexagon countersunk screw is made of zinc or zinc-aluminum alloy coating, and its electrode potential is lower than that of the alloy steel electrode potential of the slider body.

[0032] Furthermore, the wireless temperature measurement component is independently powered by a built-in battery, with no external wires extending from the slider body. To avoid signal shielding, the wireless temperature measurement component is located on the side of the slider;

[0033] Furthermore, it also includes wear condition judgment logic;

[0034] The wireless temperature measurement component is set to collect the temperature data of the slider body in real time at a sampling frequency, and wirelessly transmit the temperature data to an external receiving terminal; the external receiving terminal has a pre-stored reference temperature range for each slider under normal operating conditions.

[0035] When the real-time temperature data meets any of the following conditions, the self-lubricating slider is determined to have entered an abnormal wear state:

[0036] a. The real-time temperature exceeds the upper limit of the baseline temperature range and the duration exceeds the set time threshold;

[0037] b. The rate of temperature rise per unit time exceeds the preset temperature rise rate threshold.

[0038] c. Under constant load conditions, the deviation of the real-time temperature relative to the median of the reference temperature range exceeds the preset deviation threshold.

[0039] When any of the above criteria is triggered, the external receiving terminal automatically generates a warning signal.

[0040] A universal coupling includes a high-strength self-lubricating slider with real-time temperature monitoring, as described above; it also includes a fork head and a flat head, which are connected by a mounting pin; a set of high-strength self-lubricating sliders with real-time temperature monitoring are connected to the pin through mounting through holes at both ends. The pin and the slider need to rotate relative to each other, therefore the two ends of the pin and the middle of the slider are clearance-fitted.

[0041] Furthermore, a sleeve is installed outside the pin, and a guide hole is opened in the middle of both the sleeve and the pin. A pressing rod is detachably installed in the guide hole.

[0042] An axial stepped hole is provided inside the sleeve, and an elastic extrusion structure is installed inside the axial stepped hole; one end of the elastic extrusion structure is movably abutting against the extrusion rod.

[0043] The other end of the elastic extrusion structure is equipped with a support body, which is sleeved on the end of the sleeve and moves along the axis of the sleeve; a graphite ring is provided on the support body, and the graphite ring abuts against the surfaces of the sliding body and the pin.

[0044] Furthermore, the elastic extrusion structure includes a shaft, and the axial stepped hole includes a constraint portion and an elongated hole portion; the shaft is inserted into the constraint portion and has an inclined surface at one end facing the extrusion rod; the shaft is movably abutting against the body of the extrusion rod.

[0045] The other end of the shaft is fitted with an end plate, and a cylindrical part is provided inside the end plate; a cylindrical part is provided on the support body; a spring is coaxially sleeved on the cylindrical part and the cylindrical part, and the two ends of the spring are fixedly connected to the support body and the end plate respectively.

[0046] An adjustment groove is provided on the support body, and an edge portion is provided on the sleeve. The edge portion is inserted into the adjustment groove for guiding the movement of the support body; a reinforcing member is provided at the connection between the graphite ring and the support body.

[0047] Compared with the prior art, the present invention has the following core technical advantages and beneficial effects:

[0048] 1. This invention adopts a modular, split structure with functional decoupling, enabling repairable and reusable operation. High-strength alloy steel is used as the load-bearing body, and multiple sliding plates can be detachably mounted on the surface via mounting slots to form a self-lubricating friction pair structure. Compared to copper, alloy steel, as the load-bearing main body, improves structural strength, rigidity, impact resistance, and fatigue resistance, making it suitable for heavy-duty impact conditions in rolling mills. For worn sliding plates, individual plates can be quickly removed and replaced, avoiding the traditional method of replacing the entire copper sliding plate, significantly reducing enterprise maintenance costs.

[0049] 2. This invention incorporates embedded solid lubricating media on all the flat friction surfaces, arc friction surfaces, and inner hole friction surfaces of the corresponding sliding plate. Under heavy load operation, a stable lubrication transfer film is automatically formed, solving the problems of insufficient oil supply, dust ingress, or excessively high oil temperature leading to wear and burn.

[0050] 3. This invention integrates a wireless temperature measurement module inside the rotating slider to monitor the friction temperature rise in real time. By observing temperature changes, it can indirectly determine the lubrication status, wear status, and risk of jamming, thus upgrading from passive fault repair to proactive predictive maintenance and reducing the probability of sudden downtime accidents.

[0051] The overall dimensions of the self-lubricating slider structure of the present invention can be matched with the original copper slider, and it can be directly and non-destructively installed in the existing universal coupling structure. It has zero cost for on-site modification and wide applicability. Attached Figure Description

[0052] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, unless specifically indicated, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0053] Figure 1 This is a schematic diagram of the structure of the high-strength self-lubricating slider of the present invention. Figure 1 ;

[0054] Figure 2 This is a schematic diagram of the structure of the high-strength self-lubricating slider of the present invention. Figure 2 ;

[0055] Figure 3 This is a vertical sectional view of the high-strength self-lubricating slider of the present invention;

[0056] Figure 4 This is a schematic diagram of the structure of the slider body of the present invention. Figure 1 ;

[0057] Figure 5 This is a schematic diagram of the structure of the slider body of the present invention. Figure 2 ;

[0058] Figure 6 This is a schematic diagram of the copper sleeve structure of the present invention;

[0059] Figure 7 This is a schematic diagram of the arc-shaped sliding plate of the present invention;

[0060] Figure 8 This is a schematic diagram of the planar sliding plate of the present invention.

[0061] Figure 9 This is a schematic diagram of the side slide plate of the present invention;

[0062] Figure 10 This is a working cross-sectional view of the universal coupling of the present invention;

[0063] Figure 11 This is an exploded view of the joint of the universal coupling of the present invention;

[0064] Figure 12 This is another vertical side sectional view along the pin axis of the present invention;

[0065] Figure 13 for Figure 12 Enlarged view of part A;

[0066] Figure 14 for Figure 12 Enlarged view of part B.

[0067] In the diagram: 1. Slider body; 2. Flat slide plate; 3. Arc slide plate; 4. Side slide plate; 5. Copper sleeve; 6. Wireless temperature measurement component;

[0068] 7. Guide hole; 8. Extrusion rod; 9. Support body; 11. Graphite ring; 12. Shaft one; 13. End plate; 14. Spring; 15. Solid lubricating medium;

[0069] 10. Fork head; 20. Flat head; 30. Pin; 301. Shaft body; 302. Sleeve; 303. Constraint part; 304. Long hole part; 305. Edge part. Detailed Implementation

[0070] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0071] Example 1

[0072] like Figure 1-9 As shown, this is one embodiment of the present invention, specifically a high-strength self-lubricating slider with real-time temperature monitoring, employing a modular split structure, such as... Figure 1 and 2 The invention mainly comprises a slider body 1, a flat sliding plate 2, an arc-shaped sliding plate 3, a side sliding plate 4, and a copper sleeve 5. The flat sliding plate 2, arc-shaped sliding plate 3, and side sliding plate 4 are detachably fixed to the corresponding mounting slots of the slider body 1 using countersunk hexagonal screws 7. The side of the mounting slot forms a clearance fit with the side of the corresponding sliding plate to prevent displacement and rotation of the sliding plate under working load. The copper sleeve 5 is interference-fitted into the mounting through hole of the slider body 1 with an interference amount of 0-0.04mm. The slider body 1, as the load-bearing main body, is recyclable; each sliding plate and copper sleeve 5, as consumable parts of the friction pair, can be replaced individually. This invention changes the traditional situation where an integral copper slider can only be scrapped as a whole, significantly reducing the enterprise's operation and maintenance investment.

[0073] like Figures 3 to 4 As shown, the slider body 1 is made of high-strength alloy steel forging. After rough machining, it is subjected to quenching and tempering heat treatment to make its yield strength reach more than 400MPa and its hardness reach HRC28~35. Its structural strength, rigidity, impact resistance and fatigue resistance exceed those of traditional copper castings, making it suitable for heavy-load impact conditions in rolling mills.

[0074] like Figures 7 to 9As shown, the flat slide plate 2, the arc slide plate 3 and the side slide plate 4 are all made of copper alloy as the base. They are precision cast and drilled on the working surface, and filled with graphite columns as solid lubricating medium 15. The embedding rate is controlled between 15% and 25%.

[0075] The purpose of using a fixed lubricating medium in this invention is to lubricate the sliding surface. Traditional graphite solids have low strength, and if too much is embedded in the mating surface of the copper alloy, it will reduce the overall load-bearing capacity of the slider. Therefore, the embedding rate is limited, while taking into account both load-bearing capacity and lubrication effect.

[0076] During assembly, place the slide plate into the mounting slot and tighten it using zinc-plated countersunk hex screws 7. The screw head should be countersunk 3mm to 4mm into the working surface. After assembly, measure that the working surface of the slide plate is 2mm to 3mm higher than the surface of the slider body 1. The slider body 1 does not participate in friction, and the working surface of the slide plate is flat and without protrusions, avoiding hard interference or abnormal wear with the mating slide; at the same time, the cavity between the friction surface and the slider body 1 facilitates the dissipation of frictional heat.

[0077] Because the slider body 1 is made of high-strength alloy steel, it is highly susceptible to corrosion in metallurgical and mining environments with high humidity, acid mist, or cooling spray. Corrosion products can cause deformation of the slide plate mounting groove, jamming of the mating surfaces, and even failure of the temperature sensing components. Therefore, this application implements a systematic heavy-duty anti-corrosion treatment on the exposed surface of the slider body 1. The specific steps are as follows:

[0078] 1) Surface pretreatment:

[0079] Before coating, all exposed surfaces of the slider body 1 are sandblasted, excluding the precision mating surfaces that directly contact the slide plate. A mixture of steel grit and steel shot is used as the abrasive, and the surface roughness Ra after treatment is controlled at 6.3μm, and the surface cleanliness reaches Sa2.5 level as specified in GB / T8923 to ensure coating adhesion.

[0080] 2) Apply anti-corrosion coating:

[0081] The outer surface of the slider body 1 is coated with a three-layer composite anti-corrosion system:

[0082] Base coat: Zinc-aluminum based anti-corrosion primer, dry film thickness 40μm~80μm. The zinc and aluminum flakes in this primer are distributed in a gradient, with the zinc-aluminum mass ratio controlled at (3~5):1, and phosphorus iron powder is added as an anti-rust filler, which can still provide cathodic protection even in the event of scratches;

[0083] Intermediate layer: Epoxy resin micaceous iron oxide intermediate paint, dry film thickness 60μm~120μm. The micaceous iron oxide flakes are arranged in parallel to form a dense shielding layer, effectively blocking the penetration of water vapor and oxygen;

[0084] Topcoat: Aliphatic polyurethane topcoat, dry film thickness 30μm~60μm, with excellent weather resistance, impact resistance and grease resistance.

[0085] Because the self-lubricating slider is made of copper alloy, there is a potential difference between it and the alloy steel body, which easily leads to galvanic corrosion in humid environments. Therefore, the measures taken in this application are: to plate the surface of the internal hexagon countersunk screws that fix the slider with zinc or zinc-aluminum alloy, utilizing their lower electrochemical potential as sacrificial anodes for preferential corrosion.

[0086] This invention employs a modular, split structure with functional decoupling, enabling repairable and reusable operation. High-strength alloy steel serves as the load-bearing body, with multiple slide plates detachably mounted via mounting slots to form a self-lubricating friction pair structure. Compared to copper, alloy steel, as the load-bearing main body, enhances structural strength, rigidity, impact resistance, and fatigue resistance, making it suitable for heavy-duty impact conditions in rolling mills. For worn slide plates, individual slide plates can be quickly removed and replaced, avoiding the traditional method of replacing the entire copper slide plate, significantly reducing enterprise maintenance costs.

[0087] Example 2

[0088] Based on Embodiment 1, this invention provides a high-strength self-lubricating slider with real-time temperature monitoring, further comprising a wireless temperature sensing component 6, which includes a wireless temperature sensor and an independent power supply module. Multiple blind holes are machined on the side of the slider body 1 to serve as mounting cavities for the wireless temperature sensing component 6. A 250μm thick polyurea coating is sprayed into the cavity as an insulating and corrosion-resistant lining, cutting off the conductive path between the metal shell of the wireless temperature sensing component and the slider body to prevent the formation of a corrosion battery. The wireless temperature sensing component 6 is independently powered by a built-in battery, requiring no external wiring, and is suitable for situations where the slider rotates continuously 360° with the universal joint. In this embodiment, a total of four arc surfaces and two flat surfaces are set on the working surface to participate in extrusion and sliding, with each wireless temperature sensing component taking into account both flat and arc surfaces.

[0089] In actual operation, the self-lubricating friction assembly includes a flat sliding plate 2, an arc-shaped sliding plate 3, and a side sliding plate 4. The wear degree of the self-lubricating friction assembly is closely related to frictional heat generation. As the solid lubricating medium 15 on the working surface of the self-lubricating slider is consumed and surface abrasive particles accumulate, the coefficient of friction gradually increases, and the frictional heat rises accordingly, causing a identifiable change in the side temperature of the slider body 1. Therefore, this embodiment introduces a temperature-based wear state judgment mechanism based on the wireless temperature measurement component 6.

[0090] The wireless temperature measurement component 6 collects temperature data in real time from the side and near the friction area of ​​the slider body 1 at a set sampling frequency, such as 1Hz to 10Hz. This data is then transmitted wirelessly to the field gateway or remote monitoring terminal via a short-range method, such as ZigBee or Bluetooth. The monitoring terminal has a pre-stored reference temperature range for this model of slider under normal operating conditions.

[0091] The reference temperature range is established as follows: Before the self-lubricating slider leaves the factory or during the initial installation phase, multiple sets of temperature samples are collected under standard test conditions or no-load test operation conditions during continuous and stable operation of the slider. After removing occasional outliers, the sample mean μ and standard deviation σ are calculated, and the interval [μ−2σ, μ+2σ] is taken as the reference temperature range. This range can reflect the thermal balance characteristics under normal lubrication and normal wear conditions.

[0092] During the monitoring process, the monitoring terminal compares the measured temperature with the reference temperature range in real time. When any of the following criteria are met, the self-lubricating friction component is determined to have entered an abnormal wear state:

[0093] a. Over-temperature criterion: The real-time temperature is higher than the upper limit of the reference temperature range, and the duration exceeds the set duration; for example, if the duration is 10 seconds and the set duration is 5 seconds, the real-time temperature exceeding the upper limit indicates that it is in an over-temperature state.

[0094] b. Temperature rise rate criterion: If the temperature rise rate per unit time exceeds the preset threshold, for example, if the temperature rises by 5°C in 10 seconds, and the preset threshold is 2°C / min, it indicates that the temperature rise rate is exceeding the limit.

[0095] c. Steady-state deviation criterion: Under the condition of basically constant load, the deviation of the real-time temperature from the median of the reference temperature range exceeds the preset deviation threshold. For example, the sample mean represents the median of the reference temperature range as 40℃, and the preset deviation threshold is 60℃. When the actual temperature exceeds 69℃, it means that it exceeds the preset deviation threshold by 15%, which also means that the steady-state imbalance deviation exceeds the limit.

[0096] When any of the above criteria is triggered, the system automatically generates a graded early warning signal:

[0097] Level 1 warning: This alerts maintenance personnel to check lubrication status, installation gaps, and dust intrusion.

[0098] Level 2 warning: This indicates that the flat slide plate 2 or the curved slide plate 3 should be replaced during the next planned shutdown.

[0099] Level 3 warning: prompts immediate shutdown for inspection and maintenance to prevent overheating, softening, or damage to the slider body 1.

[0100] The warning level can be increased by exceeding the number of criteria.

[0101] Furthermore, the wireless temperature measurement component 6 can also record long-term temperature history curves and upload the temperature data along with early warning events to the monitoring terminal. By analyzing the temperature trends, the wear degree of the self-lubricating friction components can be quantitatively assessed and the remaining life can be predicted, thereby enabling precise maintenance and monitoring of the local condition of the coupling.

[0102] This invention integrates a wireless temperature measurement module inside the rotating slider to monitor friction temperature rise in real time. By observing temperature changes, it indirectly determines the lubrication status, wear status, and risk of jamming, thus upgrading from passive fault repair to proactive predictive maintenance and reducing the probability of sudden downtime accidents.

[0103] Example 3

[0104] Based on Embodiment 2, another embodiment of the present invention is provided: a universal coupling, such as... Figure 10 and 11 As shown, it includes a high-strength self-lubricating slider with real-time temperature monitoring; it also includes a fork head 10 and a flat head 20, which are connected by a mounting pin 30; a set of high-strength self-lubricating sliders with real-time temperature monitoring are connected to both the upper and lower parts of the pin 30 through mounting through holes. Figure 10 As shown, a universal coupling connects to both ends of a long shaft, providing both turning and coaxial rotation. Figure 11 The diagram shows an exploded view of the nodes at one end of the long shaft's universal joint. The left side is the shaft end fork, the right side is the shaft end flat head, and the middle section connects the shaft end fork and the shaft end flat head via a pin connecting the upper and lower sliders.

[0105] Example 4

[0106] like Figure 12-14 As shown, this is another embodiment of the present invention, based on embodiment 3, along... Figure 10 The axial sectional view of the pin 30. The pin 30 includes a shaft body 301 and a sleeve 302 installed outside the shaft body 301. A guide hole 7 is opened in the middle of the sleeve 302 and the pin 30. A pressing rod 8 is detachably installed in the guide hole 7.

[0107] An axial stepped hole is provided inside the sleeve 302, and an elastic extrusion structure is installed inside the axial stepped hole; one end of the elastic extrusion structure is movably abutting against the extrusion rod 8.

[0108] A support body 9 is installed at the other end of the elastic extrusion structure. The support body 9 is sleeved on the end of the sleeve 302 and moves along the axis of the sleeve 302. A graphite ring 11 is provided on the support body 9, and the graphite ring 11 abuts against the surfaces of the sliding body 1 and the pin 30. The end of the elastic extrusion structure bears the extrusion rod, and the other end abuts against the graphite ring facing the slider body, and is simultaneously constrained against the shaft body. When the long shaft rotates, especially when it always rotates on one side, the shaft end fork head on one side rotates first, and then the shaft end flat head rotates through the pin. Therefore, one side of the local pin always contacts the corresponding copper sleeve first. The graphite ring in the structure can achieve steering lubrication, maintain long-term contact, and also ensure local strength.

[0109] The elastic extrusion structure includes a shaft 12, and the axial stepped hole includes a constraint part 303 and an elongated hole part 304; the shaft 12 is inserted into the constraint part 303 and has an inclined surface at one end facing the extrusion rod 8; the shaft 12 and the body of the extrusion rod 8 are in movable contact.

[0110] The other end of the shaft 12 is fitted with an end plate 13, and a cylindrical part 1 is provided inside the end plate 13; a cylindrical part 2 is provided on the support body 9; a spring 14 is coaxially sleeved on the cylindrical part 1 and the cylindrical part 2, and the two ends of the spring 14 are fixedly connected to the support body 9 and the end plate 13 respectively.

[0111] An adjustment groove is provided on the support body 9, and an edge portion 305 is provided on the sleeve 302. The edge portion 305 is inserted into the adjustment groove for guiding the movement of the support body 9. The connection position between the adjustment groove and the spring enables the extension and retraction of the support body and prevents the support body from deviating. A reinforcing member is provided at the connection between the graphite ring 11 and the support body 9. The reinforcing member can be a partial insert rod, with one side inserted into the support body and the other side inserted into the graphite ring to ensure synchronous rotation of both. In actual installation, the graphite ring can be connected to the support body by brazing, such as with Ag-Cu-Ti or TiNiCu active solder.

[0112] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the concept of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-strength self-lubricating slider with real-time temperature monitoring, characterized in that: include: The slider body (1) has a boss in the middle; mounting grooves are provided on both sides and the outer wall of the boss; and an assembly through hole is provided in the middle of the boss. The flat slide (2) and the arc slide (3) are respectively installed in the mounting grooves on both sides of the slider body (1), and the thickness extends out of the groove depth of the corresponding mounting groove; Side slide plate (4) is installed in the mounting groove on the outside of the boss; the flat slide plate (2), the arc slide plate (3) and the side slide plate (4) can all be detachably connected in the corresponding mounting groove; The copper sleeve (5) is interference-fitted into the mounting through hole of the slider body (1); The wireless temperature measurement component (6) includes a wireless temperature sensor and an independent power supply module, which are embedded on the side of the slider body (1). The wireless temperature sensor is used to detect the temperature inside the slider body (1).

2. A high-strength self-lubricating slider with real-time temperature monitoring according to claim 1, characterized in that: The slider body (1) is integrally formed from high-strength alloy steel. After quenching and tempering, the yield strength of the material is not less than 400MPa and the hardness is HRC28~35. The mounting slots located at the installation positions of the flat sliding plate (2) and the circular arc sliding plate (3) are respectively provided with axial limiting surfaces and circumferential anti-rotation surfaces to limit displacement and rotation under working loads; The mounting slot located at the installation position of the side slide plate (4) is provided with a circumferential anti-rotation surface.

3. A high-strength self-lubricating slider with real-time temperature monitoring according to claim 1, characterized in that: Except for the assembly mating surfaces, the exposed surfaces of the slider body (1) are all coated with an anti-corrosion composite coating. Before coating, the exposed surfaces are sandblasted, with a surface roughness Ra of 6.3μm to 12.5μm and a cleanliness level of Sa2.

5. The anti-corrosion composite coating, from the inside out, includes: Zinc-aluminum based anti-corrosion primer layer, thickness 40μm~80μm; Epoxy resin micaceous iron oxide intermediate layer, thickness 60μm~120μm; Weather-resistant polyurethane topcoat layer, thickness 30μm~60μm; An insulating and corrosion-resistant lining is coated on the inner wall of the mounting cavity used to install the wireless temperature measurement component (6). The insulating and corrosion-resistant lining is a polyamide or polyurea coating with a thickness of not less than 200 μm.

4. A high-strength self-lubricating slider with real-time temperature monitoring according to claim 1, characterized in that: The planar sliding plate (2), the arc sliding plate (3), the side sliding plate (4) and the copper sleeve (5) all include a copper alloy matrix and a solid lubricating medium (15) embedded in the copper alloy matrix, and their working surfaces protrude 2mm to 3mm from the surface of the slider body (1) after assembly. The solid lubricating medium (15) is graphite or molybdenum disulfide, and its embedding rate on the friction working surface is 15% to 25%.

5. A high-strength self-lubricating slider with real-time temperature monitoring according to claim 1, characterized in that: The flat slide (2), the arc slide (3) and the side slide (4) are all locked and fixed in the mounting groove by internal hexagon countersunk screws (7); the head of the internal hexagon countersunk screw (7) is recessed 3mm to 4mm below the outer surface of the corresponding mounting slide; the internal hexagon countersunk screw (7) is made of zinc or zinc-aluminum alloy coating, and its electrode potential is lower than that of the alloy steel electrode potential of the slider body (1).

6. A high-strength self-lubricating slider with real-time temperature monitoring according to claim 1, characterized in that: The wireless temperature measurement component (6) is powered independently by a built-in battery and has no external wires leading out of the slider body (1).

7. A high-strength self-lubricating slider with real-time temperature monitoring according to claim 1, characterized in that: It also includes wear condition determination logic; The wireless temperature measurement component (6) is set to collect the temperature data of the slider body (1) in real time at the sampling frequency, and wirelessly transmits the temperature data to the external receiving terminal; the external receiving terminal has a pre-stored reference temperature range for each slider under normal operating conditions. When the real-time temperature data meets any of the following conditions, the self-lubricating slider is determined to have entered an abnormal wear state: a. The real-time temperature exceeds the upper limit of the baseline temperature range and the duration exceeds the set time threshold; b. The rate of temperature rise per unit time exceeds the preset temperature rise rate threshold. c. Under constant load conditions, the deviation of the real-time temperature relative to the median of the reference temperature range exceeds the preset deviation threshold. When any of the above criteria is triggered, the external receiving terminal automatically generates a warning signal.

8. A universal coupling, characterized in that, The invention comprises a high-strength self-lubricating slider with real-time temperature monitoring as described in any one of claims 1 to 7; it also comprises a fork head (10) and a flat head (20), which are connected by a mounting pin (30); and a set of high-strength self-lubricating sliders with real-time temperature monitoring are connected above and below the pin (30) by mounting through holes.

9. A universal coupling according to claim 8, characterized in that, The pin (30) includes a shaft body (301) and a sleeve (302) installed outside the shaft body (301). A guide hole (7) is opened in the middle of the sleeve (302) and the pin (30). A pressing rod (8) is detachably installed in the guide hole (7). An axial stepped hole is provided in the sleeve (302), and an elastic extrusion structure is installed in the axial stepped hole; one end of the elastic extrusion structure is movably abutted against the extrusion rod (8); The other end of the elastic extrusion structure is equipped with a support body (9), which is sleeved on the end of the sleeve (302) and moves along the axis of the sleeve (302); a graphite ring (11) is provided on the support body (9), and the graphite ring (11) abuts against the surfaces of the sliding body (1) and the pin (30).

10. A universal coupling according to claim 9, characterized in that, The elastic extrusion structure includes a shaft (12), and the axial stepped hole includes a constraint part (303) and an elongated hole part (304); the shaft (12) is inserted into the constraint part (303) and has an inclined surface at one end facing the extrusion rod (8); the shaft (12) and the extrusion rod (8) are in movable contact. The other end of the shaft (12) is fitted with an end plate (13), and a cylindrical part (1) is provided inside the end plate (13); a cylindrical part (2) is provided on the support body (9); a spring (14) is coaxially sleeved on the cylindrical part (1) and the cylindrical part (2), and the two ends of the spring (14) are fixedly connected to the support body (9) and the end plate (13) respectively. An adjustment groove is provided on the support body (9), and an edge part (305) is provided on the sleeve (302). The edge part (305) is inserted into the adjustment groove for guiding the movement of the support body (9); a reinforcing member is provided at the connection between the graphite ring (11) and the support body (9).

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