138results about How to "Improve lubrication" patented technology

Disclosed is a nanometer fuel oil addition agent, wherein the constituents comprises (by weight percent): rare earth powder 0.1-10%, fuel synergistic agent 1-10%, dispersing agent 1-20%, oleinic acid 1-10%, castor oil 1-20%, and balancing white oil.

The invention relates to a drying cylinder surface repairing agent. The drying cylinder surface repairing agent comprises, by mass, from 2% to 5% of metallic compound solid lubricants, from 5% to 15% of cationic polymers and from 80% to 90% of water. The drying cylinder surface repairing agent contains the metallic compound solid lubricants, the metallic compound solid lubricants have the property that the metallic compound solid lubricants in heat automatically approach metal surfaces, accordingly, in a paper drying process after the drying cylinder surface repairing agent forms a coating on the surface of a drying cylinder, the metallic compound solid lubricants in heat can be effectively attached to the surface of the drying cylinder, and defects on the surface of the drying cylinder can be effectively filled and repaired. The invention further relates to a drying cylinder surface repairing method and a repaired drying cylinder.

The invention discloses special lubricating oil of a bearing bush of a supporting roller of a rotary kiln and a manufacturing method thereof. The special lubricating oil contains the following components according to the content by mass percent: 49 to 69 percent of liquid paraffin chlorination and condensation synthetic oil, 15 to 35 percent of poly-alpha-alkene synthetic oil, 0.5 to 1.5 percent of tackifier, 2 to 4 percent of nano colloid molybdenum disulphide powder, 3.5 to 5.5 percent of organic molybdenum complex additive, 2.5 to 4.5 percent of borate complex additive, 1 to 3 percent of additive T406, 0.4 to 0.6 percent of antioxidant T203, 0.7 to 0.9 percent of antioxidant T531 and 0.6 to 0.8 percent of antioxidant T512. The invention has the favorable performances of extreme-pressure resistance, abrasion resistance, high-temperature resistance, water sprinkling resistance and oxidation resistance, can fully act as the functions of repairing the wire drawing of the bearing bush, decreasing the abrasion and lowering the temperature of the bearing bush, prolongs the use period of the bearing bush of the supporting roller and realizes the aims of energy saving and consumption reduction.

The invention provides a reinforcing ring for a reversing device and belongs to the technical field of reversing devices. The reinforcing ring solves the technical problems that an existing reversing device is low in strength and poor in abrasion resistance. According to the technical scheme, the reinforcing ring for the reversing device comprises an annular body which is prepared from, by weight, 55-75 parts of epoxy resin, 5-15 parts of non-alkali glass fibers, 5-10 parts of aramid fibers, 15-30 parts of a curing agent, 3-8 parts of a toughening agent, 5-10 parts of a heat-resistant modifying agent and 4-7 parts of a lubricating agent. The reinforcing ring for the reversing device has the advantages that the glass fibers and the aramid fibers are added, so that the mechanical strength of the reinforcing ring is improved; meanwhile, the toughening agent is added, so that the toughness of the reinforcing ring is improved to a certain extent, and the reinforcing ring is not prone to breakage; the lubricating agent is added, so that the abrasion resistance of the reinforcing ring is improved, the reinforcing ring is not prone to abrasion, the integrality of the reinforcing ring is guaranteed to a certain extent; the heat-resistant modifying agent is added, so that the heat resistance of the reinforcing ring is improved, and the reinforcing ring can work in a high-temperature environment for a long time.

The invention discloses a concrete pumping device and a pumping oil cylinder. The pumping oil cylinder can be used in the concrete pumping device to drive a concrete piston. The pumping oil cylinder comprises a main oil cylinder body and a rotating oil cylinder body. The main oil cylinder body comprises a first cylinder barrel, a piston and a piston rod. The rotating oil cylinder body comprises a second cylinder barrel, a rotating shaft, a first blade and a first partition plate, wherein the rotating shaft is arranged on the second cylinder barrel, the axis of the rotating shaft is overlapped with the axis of the second cylinder barrel, one end of the first blade is fixedly connected with the rotating shaft, the other end of the first blade is connected with the second cylinder barrel in a sealed mode, one end of the first partition plate is fixedly connected with the second cylinder barrel, the other end of the first partition plate is connected with the rotating shaft in a sealed mode, and a first oil opening and a second oil opening are formed in the second cylinder barrel and are formed in the two sides of the first partition plate respectively. Part of parts of the rotating oil cylinder body are selectively connected with part of parts of the main oil cylinder body, and therefore the rotating shaft of the rotating oil cylinder body can selectively drive the piston rod of the main oil cylinder body. The piston rod in the pumping oil cylinder can conduct independent linear reciprocation and rotation.

The invention discloses a scroll compressor, relating to the technical field of manufacturing of fluid machinery. The scroll compressor comprises a movable scroll plate, a static scroll plate and bearings installed in a bearing carrier on the back surface of the movable scroll plate, wherein the static scroll and the movable scroll mesh with each other to form a variable-volume compression chamber. The invention is characterized in that at least two groups of through holes are drilled from the inner end of a slip ring groove at the back end surface of the movable scroll plate to the inner cavity of the bearing carrier, so that lubricating oil outside the movable scroll plate can smoothly enter the inner cavity of the bearing carrier of the movable scroll plate. Compared with the prior art, the invention can enable the lubricating oil outside the bearing carrier of the movable scroll plate to enter the inner cavity of the bearing carrier through the drilled channels, so that the bearings installed in the bearing carrier can be sufficiently cooled and lubricated, thereby greatly reducing the phenomenon of bearing burnout caused by bearing overheating due to defective lubrication or oil shortage of the bearings.

The invention relates to the field of mold guide columns, in particular to a self-lubricating type stamping mold guide column special for a punching machine. The stamping mold guide column comprises alower shaft shoulder and an outer guide sleeve; mounting holes are formed in the inner side of the lower shaft shoulder, and a column body is movably installed on the outer side of the upper end of the lower shaft shoulder; a spring is arranged on the outer surface of the column body; the outer side of the lower end of the outer guide sleeve is fixedly provided with a steel ball guide sleeve, andsteel balls are movably installed on the inner surface of the steel ball guide sleeve; and an upper shaft shoulder is fixedly installed on the outer side of the upper end of the outer guide sleeve. According to self-lubricating type stamping mold guide column special for a punching machine, first oil separation outlets, second oil separation outlets, an oil guide pipe and a guide sleeve inner wall are arranged, the guide sleeve inner wall is not attached to the outer guide sleeve so that a cavity is formed, oil can be stored, oil can be discharged at the same time through the oil separation outlets which are alternately installed in a staggered mode, and therefore the lubricating effect is improved, multiple oil injection grooves are replaced by the single oil guide pipe, production costof the column body is reduced, and better application prospects are brought.

The invention discloses a gap filler which comprises the following components in parts by weight: 30-70 parts of quartz sand, 20-30 parts of Portland cement, 3-10 parts of antioxidant, 1-3 parts of limestone, 1-3 parts of organosilicon leveling agent, 1-2 parts of mold preventive and 5-10 parts of inorganic aluminum salt waterproofing agent. The gap filler disclosed by the invention has the advantages of favorable water resistance, mold resistance and oxidation resistance, is easy and safe for construction, and thus, is a favorable gap filler for spreading and attaching ceramic tiles.

The invention discloses a method and a structure of a taper roller bearing low friction. The invention causes the angle between a large retaining ring of the taper roller bearing and a raceway generatrix more than 90 DEG and reduces the ball diameter of the sphere at one end of the taper roller, meanwhile, the invention implements the object that the contact between the taper roller sphere and the large retaining ring is changed from crossed multi-point contact into slippery one-point contact; meanwhile, the invention presents the angle range is 90 DEG-93 DEG; furthermore, the ball diameter complies with the specific requirement of 40%-80% of the stipulated value of the existing drawing of the products. The invention is beneficial for reducing the friction, reducing the abrasion between the large retaining ring and the sphere and implementing the high-speed heavy loading of the taper roller bearing.

The invention provides latex abrasive base paper, which is prepared from the following raw materials in parts by weight: 30-50 parts of cornstalk fiber, 100 parts of high-density cotton linter pulp, 5-12 parts of polypropylene fiber, 20-40 parts of alkali-free glass fiber chopped strands and 3-8 parts of a ceramic fiber; the base paper is prepared from the following raw materials in parts by weight: 0.1-4 parts of amphoteric polyacrylamide, 0.2-0.8 part of modified starch light calcium carbonate, 0-0.2 part of polyoxyethylene with the molecular weight of 2500000 to 3000000, 0-0.2 part of an antifoaming agent and 5-10 parts of latex. The latex abrasive base paper has the characteristics of being good in abrasive resistance, good in flexibility and high in tensile strength.

The invention discloses a main piston rod, an air control valve and a lubricating method for a slide valve pair. Compared with the prior art, a balance valve and a balance pipe are arranged on a main piston rod body, the upper end of the balance pipe is located above the lubricating oil liquid level, and the lower end of the balance pipe is communicated with a slide valve chamber through the balance valve. Accordingly, lubricating oil stored in a main piston can be delivered to all lubricating points, in the low pressure state or zero pressure state, caused by emergency braking or long-time vehicle stopping or air braking value storing and transporting after a test is completed, of the slide valve chamber, the pressure in an oil storage cavity is discharged in a delayed mode to achieve balance with that in the slide valve chamber, therefore, the problem that a large amount of the lubricating oil is drained through the lubricating points to cause the stored oil to be exhausted in a short time due to the fact that the pressure in the oil storage cavity is kept high and the pressure in the slide valve chamber is low or zero, and particularly on the condition that the plane of the slide valve pair is damaged is avoided, and then long-time continuous lubricating is achieved.

A technology for manufacturing tubular metal casing includes such steps as cutting raw tube short by predefined size, cold die pressing of raw tube segment, surface treatment, and post-treating.

The present invention provides qualitative filtration paper, which comprises, by weight, 30-50 parts of corn straw fiber, 5-12 parts of polypropylene fiber, and 30-50 parts of high density cotton linter pulp, wherein 0.05-2 parts of amphoteric polyacrylamide, 0.2-0.8 part of modified starch light calcium carbonate, 0.05-3 parts of polyoxyethylene having a molecular weight of 2500000-3000000, and 0-0.2 part of a defoamer are used during the preparation, and an impregnant is a modified phenol formaldehyde resin. The qualitative filtration paper of the present invention has advantages of good filtration absorption performance, long service life, good water resistance, and high compressive strength.

A method for detection of pre-scuffing events in a large multicylinder two-stroke diesel engine by recognizing the characteristic temperature fluctuations of pre-scuffing events. The temperature fluctuations are characterized by the time span between their peaks and the magnitude of the fluctuations. Automatic countermeasures may be initiated after detection of the pre-scuffing event. The countermeasures may automatically be ended.

A gear drive has a drive housing (1, 2) with a driveshaft (3) exiting the drive housing (1, 2) through a bore (10). The driveshaft 13 is rotatably supported in the drive housing (1, 2) around an axis of rotation X—X. A connecting shaft (7) is arranged inside the drive housing (1, 2). The connecting shaft (7) is connected in a rotationally fast way to a drive gear (35). A torque limiting coupling (4) is arranged inside the drive housing (1, 2). The input end of the torque limiting coupling (4) is connected to the driveshaft (3). The output end of the torque limiting coupling (4) is connected to the connecting shaft (7). The driveshaft (3) and the connecting shaft (7) are supported relative to one another by a radial bearing (30). The gear drive ensures that the driveshaft (3) and the connecting shaft (7) can more easily accommodate bending moments and transverse forces.

The invention belongs to the field of fluid motive sealing and particularly relates to a metal self-lubrication piston ring. A plurality of arc grooves are evenly formed in the front sealing face and the back sealing face of a piston ring body respectively, and accordingly a thermal fluid dynamic force wedge effect is generated, the sealing performance of the piston ring is improved, sealing face lubricating performance is improved, liquid flows in a circulating mode along with the arc grooves, and radiating performance is good. In addition, the piston body is made of CuSn95C5 materials, the elasticity, the fatigue resistance, the abrasive resistance, the machinability and the self-lubricating anti-attrition performance of the piston ring body are greatly improved.

The invention relates to a rolling bearing (1), comprising rolling elements (4) and an outer race (2), wherein an outer shell (12a, 12b) of the outer race (2) comprises two circumferential grooves (10, 11) axially spaced at least by the amount of the axial extent of the rolling elements (4), and wherein a first part of the outer shell (12b) axially between the two grooves (10, 11) is radially retracted relative to a second part of the outer shell (12b) axially outside of the grooves (10, 11), and wherein the outer race comprises a substantially constant thickness in the area of the first part of the outer shell (12a). In order to provide a simple rolling bearing that is inexpensive to produce and fits in a standard installation space, the invention proposes that the ratio for each groove between a radial wall thickness (B) of said groove and an axial wall thickness (A) of said groove is in the range from 0.5 to 1.5, wherein the radial wall thickness (B) corresponds to the smallest radial wall thickness of the outer race, and wherein the axial wall thickness (A) corresponds to the smallest axial distance of the groove from an adjacent end face (14, 15) of the outer race.

The invention discloses a pharmaceutical preparation containing rifaximin gel and rifaximin oral emulsion and a preparation method thereof, wherein the gel comprises rifaximin and a gel matrix, the mass ratio of the rifaximin to the gel matrix is (2-80):(5-64), and the gel matrix comprises 2-30 parts by weight of a water-soluble gel matrix and 0.5-2 parts by weight of a modifier; and the rifaximin oral emulsion comprises 1-40 parts by weight of rifaximin, 50-350 parts by weight of an oil phase, 1-300 parts by weight of an emulsifier, and 0-150 parts by weight of a co-emulsifier. In the preparation, on the premise of guaranteeing that the dose of a main drug is appropriate, through the selection of auxiliary materials and preparation methods, rifaximin is prepared into gel or oral emulsion, thereby facilitating the oral administration and absorption of drugs, and achieving relatively high bioavailability. Meanwhile, a newer and better dosage form choice is provided for clinic.

The invention discloses a novel lubricating and sealing structure for a copper bush of a press balance cylinder, and belongs to the technical field of presses. The novel lubricating and sealing structure consists of a balance cylinder block 7, a piston, a bearing block 2, the copper bush 3 and a piston rod 5, wherein the bearing block 2 is fixed on a lower cover 6 of the balance cylinder block 7; the jointed part of the bearing block 2 and the lower cover 6 is provided with a corresponding step; a sealing ring 10 is arranged in a stepped hole of the jointed part of the bearing block 2 and the lower cover 6; the bearing block 2 is connected with and fixed on the lower cover 6 of the balance cylinder through a screw; the copper bush 3 is fixed in a hole of the bearing block 2 through a set screw; the lower part of the interior of the bearing block 2 below the copper bush 3 is provided with a seal groove; an oil seal 1 is arranged in the seal groove; the bearing block 2 and the copper bush 3 are provided with an oil feed hole 8 and an oil return hole 9; and lube oil enters the copper bush 3 from the oil feed hole 8 of the bearing block 2 to be stored in an oil tank 4 and flows out from the copper bush 3 through the oil return hole 9 of the bearing block 2 after the oil tank is full to form circulating lubrication.

A steering shaft for a motor vehicle includes a hollow shaft and an inner shaft which is arranged coaxially in the hollow shaft. The inner shaft is configured to be telescoped relative to the hollow shaft in the direction of the longitudinal axis of the steering shaft and is connected in a torque-transmitting manner to the hollow shaft via at least one rolling body. The rolling body is received in a rolling body cage such that it can roll in the direction of the longitudinal axis between the inner shaft and the hollow shaft. In order to achieve a high operational reliability with a relatively low manufacturing complexity, the rolling body cage has at least one seal element which bears sealingly against the hollow shaft and/or the inner shaft.

The invention discloses a laser cleaning head capable of rotating based on a circular wedge-shape prism and a using method. The laser cleaning head comprises a shell fixedly connected with optical fiber, a beam shaping part arranged in the shell, at least one circular wedge-shape prism driven to rotate around an optical axis, and a driving component for driving the circular wedge-shape prism, wherein the light extraction point of the optical fiber, the beam shaping part and the circular wedge-shape prism are arranged on the same optical axis. The circular wedge-shape prism rotates to scan, andthe laser cleaning head reduces the system size, is adapted to the light beam with a larger diameter, improves the stability and the capacity of resisting disturbance and reduces the driving controldifficulty. In addition, the invention further provides a unique cleaning scanning path, and the unique cleaning scanning path meets the application demand and has certain practical significance.

The invention discloses a gap filler which comprises the following components in parts by weight: 30-70 parts of quartz sand, 3-10 parts of antioxidant, 1-3 parts of limestone, 1-3 parts of organosilicon leveling agent, 1-2 parts of mold preventive and 10-30 parts of magnesium silicate. The gap filler disclosed by the invention has the advantages of favorable wear resistance, low cracking tendency, mold resistance and oxidation resistance, is easy and safe for construction, and thus, is a favorable gap filler for spreading and attaching ceramic tiles.

The invention discloses a two-stage compressor which comprises a shell, a film, a first connecting pipe, a second connecting pipe, a first one-way valve, a second one-way valve, a mounting rack, a rotation shaft, a driving unit, a first runner, a second runner, a first piston rod, a second piston rod, a first piston and a second piston; an air inlet, a connecting hole and an air outlet are formed in the shell; a first mounting hole and a second mounting hole are formed in the top wall of the shell; a first accommodating cavity and a second accommodating cavity are formed in the shell; the air inlet, the connecting hole and the first mounting hole communicate with the first accommodating cavity; the connecting hole, the air outlet and the second mounting hole are communicated with the second accommodating cavity; the film is arranged in the second accommodating cavity; the first end of the film is hinged to the side wall of the shell; the second end of the film is a free end; one end of the first connecting pipe is connected with the air inlet; one end of the second connecting pipe is connected with the air outlet. The two-stage compressor is excellent in air compression effect.

The invention provides a coupling. The coupling comprises a first half-coupling and a second half-coupling which are connected with each other, wherein the first half-coupling comprises a first drum-shaped tooth connecting shaft part and a first transition part, and a first drum-shaped tooth of the first drum-shaped tooth connecting shaft part is matched with a first inner tooth groove of the first transition part; and the second half-coupling comprises a second drum-shaped tooth connecting shaft part and a second transition part, and a second drum-shaped tooth of the second drum-shaped toothconnecting shaft part is matched with a second inner tooth groove of the second transition part. After the installation is completed on equipment, a sealed inner cavity is formed between the first transition part and the second transition part, the inner cavity is filled with lubricating oil, and it is guaranteed that the lubricating oil fully lubricates all tooth groove surfaces. A magnetic rod is arranged in the sealed inner cavity, iron scraps in the lubricating oil can be effectively adsorbed by the magnetic rod, and the oil is purified. The whole coupling is simple and reasonable in structure, convenient to maintain and use, long in service life and great in significance for the development of the couplings.