8results about How to "Stable lubrication" patented technology

The invention relates to the technical field of petroleum drill rods, in particular to a drill rod joint gradient coating and a preparation method and a coating method thereof. The gradient coating of the drill rod joint comprises a bottom layer, a middle layer and a surface layer, the bottom layer, the middle layer and the surface layer are sequentially stacked on the surface of a drill rod connector base body which is subjected to plasma electrolytic polishing-micro-arc oxidation composite pretreatment and silanization bridging. According to the invention, the whole process optimization of anchor pattern pretreatment-coating coating-curing molding of the drill rod thread is realized, through unique composition design and a spraying process, the comprehensive properties of lubrication, wear resistance and rust prevention of the coating are improved, continuous protection and performance recovery of the thread surface under dynamic load are realized, and the service life of the thread is prolonged. The service life of the drill rod is effectively prolonged, the maintenance cost is reduced, the problem that shackling cannot be conducted in the using process can be effectively solved, and heavy metal pollutants cannot be generated in the technological process.

This utility model relates to a lubrication device for a down-the-hole drill hoisting system, belonging to the field of mining equipment technology in the metallurgical industry. The technical solution is as follows: the bottom sprocket (7) and the top sprocket (9) are respectively fixed on the drill frame (12), and the bottom sprocket (7) and the top sprocket (9) are connected by a hoisting chain (6). The pressure sprocket (3) cooperates with the hoisting chain (6). The lubricating oil tank (1) is located above the pressure sprocket (3). The upper end of the oil dripping pipe (15) is connected to the bottom of the lubricating oil tank (1), and the lower end of the oil dripping pipe (15) faces the pressure sprocket (3). One end of the high-pressure air pipe (5) is connected to the air compressor (17), and the other end of the high-pressure air pipe (5) faces the bottom sprocket (7). An adjusting valve (2) is installed on the oil dripping pipe (15), and an air pipe valve (8) is installed on the high-pressure air pipe (5). The beneficial effects of this utility model are: ensuring the lubrication of the hoisting chain, and using high-pressure airflow to remove mineral powder on the sprocket and chain, avoiding grease splashing.

According to the rotary thrust plate system and the hydraulic axial variable plunger pump, a rotary thrust plate with rollers is arranged between a sliding shoe and a variable swash plate, and sliding friction between the sliding shoe and the variable swash plate is converted into rolling friction. The sliding shoe is fixed on the thrust plate to eliminate relative motion; and the conical self-aligning raceway on the swash plate is matched with the roller. An isolation type lubrication packaging structure is adopted, the problem that a sliding shoe is prone to abrasion and ablation is fundamentally solved, the working service life of the pump is prolonged, the reliability of the pump is improved, and the maintenance cost is reduced.

The utility model belongs to displacement platform technical field especially relates to a high clean vacuum displacement platform, including base, the both ends fixed mounting of base have bearing seat, be equipped with slide rail on base, the movable installation of slide rail has displacement platform, be equipped with buffer mechanism in displacement platform. This high clean vacuum displacement platform, in precision and stability, through the linkage design of spring and damper, makes the vertical direction self -adaptation adjustment of gyro wheel frame can be realized with load weight, and the buffer gap cooperation damper of buffer groove and slide rail limiting edge attenuates the outside vibration impact energy in short time, compared with traditional rigid structure, the precision and stability are improved obviously, in clean and durability, the contact surface of slide rail and sliding block is coated with molybdenum disulfide self -lubricating wear -resisting coating, reduces the friction coefficient and reduces the generation of debris, prolongs the service life of displacement component, and the coating does not volatilize, does not absorb the impurity in vacuum environment, can steadily play lubricating effect, satisfies the use demand of high clean vacuum environment.

The utility model relates to the technical field of straightening guide, and discloses a straightening guide cylinder with a protective structure, which comprises a guide cylinder, support parts are symmetrically and fixedly connected in the guide cylinder, roller shaft levers are rotatably connected on the support parts, rollers are fixedly connected on the roller shaft levers, N-shaped parts are fixedly connected in the support parts, and the N-shaped parts are fixedly connected on the support parts. An N-shaped piece is arranged on the roller shaft rod, an electric driving gear is rotationally connected to the N-shaped piece, a driven gear is fixedly connected to the roller shaft rod, and the electric driving gear is meshed and matched with the driven gear, and through the design, the production efficiency of the whole work can be improved, that is, shutdown operation is needed in a traditional lubricating mode, and the production process can be interrupted. And the equipment can be lubricated during operation, so that the downtime is avoided, and the production continuity is guaranteed. Taking a metal pipe straightening production line as an example, if the production line is shut down for one hour due to lubrication originally, the shutdown loss of the hour can be reduced after new equipment is used, so that the production line can realize continuous output, and the yield in unit time is greatly improved.

The application discloses a bearing for a vertical shaft, comprising an outer ring and an inner ring, two rows of retainers are arranged between the outer ring and the inner ring, rolling bodies are assembled in the retainers, the retainers comprise an upper edge part, a pocket part and a lower edge part, the upper edge part is arranged along the axial direction of the outer ring, the lower edge part is arranged along the radial direction of the outer ring, the pocket part is arranged obliquely, a plurality of pockets are arranged on the pocket part, pocket beams are formed between adjacent pockets on the pocket part, a plurality of outer convex ribs are arranged obliquely on the outer circumferential wall of the retainer, a plurality of inner convex ribs are arranged obliquely on the inner circumferential wall of the retainer, and the inner convex ribs and the outer convex ribs are arranged at positions corresponding to the pocket beams. The bearing has the advantages of simple structure, effective solution to the problems of uneven distribution of lubricating grease, double-row bearing lubricating grease flow and poor sealing reliability in the prior art, and effective improvement of the operation stability and service life of the bearing.

The utility model relates to the technical field of speed reducers, in particular to a monorail crane driving speed reducer which comprises a shell, a high-speed input shaft, a low-speed input shaft, a high-speed planet carrier, a low-speed planet carrier, a high-speed planet gear, a low-speed planet gear, a high-speed planet gear shaft and a low-speed planet gear shaft. The high-speed planetary gear is connected with the high-speed planetary gear shaft through a cylindrical roller bearing, and the low-speed planetary gear is connected with the low-speed planetary gear shaft through a needle bearing; a first protruding structure is arranged on the inner wall of the shell, the low-speed planet carrier is provided with a first extending part, the first extending part is provided with a first step structure, and the first protruding structure is provided with a second step structure. And the inner ring and the outer ring of the full roller bearing are respectively arranged on the first step structure of the first extension part and the second step structure of the first bulge structure. The bearing has the advantages that the combined load bearing capacity is improved, the lubrication stability at high temperature and high speed is ensured, the assembly is simplified, and the maintenance cost is reduced due to the split type sealing cavity.

The invention discloses an assembling method of an oil-leakage-proof press-resistant ultrathin fan, which comprises the following steps: preparing a base, a sliding bearing, a rotor assemblage and a supporting assembly, and integrally forming a supporting column on a middle pipe to obtain the supporting assembly; riveting a supporting assembly at the mounting hole to obtain a first semi-finished product; arranging the FPC and the stator outside the first semi-finished product; the first gap and the second gap which are different in size are defined by the grooves of the supporting columns and the inner wall of the shaft core, lubricating grease of the first gap and the second gap generates high pressure, lubricating oil between the outer surface of the shaft core and the sliding bearing is prevented from overflowing from the second gap, and the sliding bearing is prevented from overflowing through the pumping effect or the labyrinth sealing effect generated by the grooves when the rotor rotates. Lubricating oil is actively prevented from overflowing and leaking along the shaft core, so that a dynamic sealing mechanism is more reliable compared with traditional static sealing, the problem that lubricating oil leaks when an ultrathin fan runs for a long time or in a high-temperature environment is solved, and stability and cleanliness of the fan in long-term running are guaranteed.