53results about How to "Material requirements are high" patented technology

The invention provides a differential locking mechanism. The differential locking mechanism comprises a differential mechanism and a locking mechanism. A gear A is fixedly arranged at the end, towardsthe outside of a differential mechanism shell, of a rotary shaft, a sleeve is integrally arranged at the right end of the differential mechanism shell, a semi-shaft located on the right side of the differential mechanism shell is sleeved with the sleeve, and the sleeve and the semi-shaft are movably connected. A gear B is fixedly arranged on the sleeve, the right end of the differential mechanismshell is sleeved with a barrel-shaped gear, the barrel-shaped gear and the differential mechanism shell are rotationally connected, the barrel-shaped gear and the sleeve are rotationally connected, insection is fixedly arranged at the position of an opening of the barrel-shaped gear, the barrel-shaped gear and the gear A are engaged, a gear C is fixedly arranged at the tail end of the barrel-shaped gear, the sleeve is sleeved with the gear C, and the gear C and the sleeve are rotationally connected.

A rolling forming die for a disposable hygiene product comprises a machine frame, a first roller and a second roller, wherein the first roller and the second roller are parallelly and fixedly assembled on the machine frame, the first roller comprises a middle shaft, movable cutter dies, adjusting sleeves and protective sleeves, the movable cutter dies, the adjusting sleeves and the protective sleeves are fixed on the middle shaft, a pair of adjusting sleeves is fixed in each movable cutter die, the adjusting sleeves are in a circular truncated cone shape, a layer of rubber ring is poured on the lateral side of each adjusting sleeve, the protective sleeve is fixed at one end of the movable cutter die, and the protective sleeve is fixed on the middle shaft through an expanding sleeve. By means of the technical scheme of the rolling forming die, service life of the die for single use is prolonged, and the adjusting sleeves provided with the rubber rings are arranged in the movable cutter dies and have the buffering effect, so that abrasion on a bottom roller and the cutter dies is reduced, and simultaneously the die cost and the production cost are reduced.

The invention provides a method for preparing magnesium-oxy-chloride cement by utilizing chromium slag produced through a salt sub-melting technology. The method is characterized in that based on the characteristic that the chromium slag produced through the salt sub-melting technology is rich in magnesium oxide, the chromium slag can be used for replacing a part of magnesite light burning powder, thereby reducing the preparation cost of the magnesium-oxy-chloride cement; toxic hexavalent chromium in the chromium slag is reduced by utilizing ferrous iron, thereby eliminating the potential safety hazard; chromium slag produced through the salt sub-melting technology is rich in iron and can generate ferric hydroxide gel when used for preparing the magnesium-oxy-chloride cement, so that the compactness of products can be improved and then the wear resistance and the strength of the products can be further increased; and a modifier is added so as to improve the properties of the products, obtain a good water-resisting effect and eliminate the defects that the products are rimed and halogenated easily. During the preparation of the magnesium-oxy-chloride cement by utilizing the chromium slag produced through the salt sub-melting technology, neither strong acid nor strong base is involved, the method is carried out at normal temperature and normal pressure, the requirements on equipment materials are not high, the utilization rate of raw materials is high, the technological process is simple, and the method is a novel method for preparing the magnesium-oxy-chloride cement and recycling the chromium slag.

The invention relates to a preparation method for a heat exchange tube used for extracting temperature of sewage. The preparation method is characterized by comprising the following steps: (1) loading a stainless steel coiled plate utilized as a raw material by using an uncoiling machine; (2) guiding the plate from the uncoiling machine to enter into a plate leveling machine and leveling the plate; (3) carrying out roll forming the plate from the plate leveling machine six times and then forming; (4) guiding the plate, which is subjected to roll forming, to enter into a cutting machine, and then cutting the plate according to a technical demand; (5) performing the forming combination prior to roll-welding on a semi-finished product of the heat exchange tube, which is formed in the step (4), by a spot-welding machine according to the technical demand; (6) performing rolling grinding welding on the welding part of the heat exchange tube from the step (5) by a roll grinding welding machine according to the technical demand; and (7) utilizing a reshaping machine to reshape the heat exchange tube which is formed after being welded in the step (6). The heat exchange tube prepared by using the preparation method has the thickness of 1.5-2 millimeters and has the characteristics that the tube wall is thin, the heat exchange effect is good, the welding can be limitlessly prolonged according to an onsite condition, the thickness of welding spots is uniform, and the mounting and maintaining are convenient.

The invention discloses a system for continuously preparing polymethoxy dimethyl ether by using methanol as an initial reaction raw material, which mainly comprises a formaldehyde preparation unit, a methylal preparation unit and a polymethoxy dimethyl ether preparation unit, wherein the formaldehyde preparation unit is mainly used for oxidizing the raw material methanol into a formaldehyde solution under the action of a catalyst; the methylal preparation unit is used for reacting part of the formaldehyde solution with methanol under the action of a solid acidic resin catalyst to prepare methylal; and the polymethoxy dimethyl ether preparation unit is used for respectively carrying out condensation reaction on the methanol and methylal with the formaldehyde solution under the action of an ionic liquid catalyst to prepare the polymethoxy dimethyl ether, and separating and purifying the reaction product to obtain the polymethoxy dimethyl ether product. Compared with the trioxymethylene or oligomer formaldehyde route, the system has the advantages of simple process and low energy consumption, is simple to operate, implements recovery treatment of sewage on the premise of cyclic recovering the intermediate product, and thus, is very suitable for large-scale industrial production.

The invention provides a speed reducer of a novel industrial robot. The speed reducer includes a motor and a mounting plate for mounting the motor. A fixed inner gear ring is mounted on the mounting plate, a rotating disc is mounted between the fixed inner gear ring and the mounting plate, an annular roller path is arranged between the rotating disc and the fixed inner gear ring and between the rotating disc and the mounting plate respectively, a roll ball is mounted in the annular roller path, the rotating disc is provided with inner teeth, and a driving gear matched with the inner teeth is mounted on an output shaft of the motor. A pressing plate is fixed on the fixed inner gear ring, a movable inner gear ring is mounted between the fixed inner gear ring and the pressing plate, an annular roller path is disposed between the movable inner gear ring and the fixed inner gear ring and between the movable inner gear ring and the pressing plate respectively, and a roll ball is mounted in the annular roller path. A crankshaft is fixed at the center of the rotating disc, a bearing is mounted on the crankshaft, a dual gear is mounted on the bearing, and an external gear of the dual gear is meshed with the movable inner gear ring.

The invention discloses a delta structure parallel manipulator capable of precise three-dimensional movement, comprising a delta-type parallel manipulator body based on a 3-RUU kinematic chain, a carrying main platform, and a main platform support based on a 3-PUU kinematic chain, wherein the The Delta type parallel mechanical mobile phone body is installed on the carrying main platform, and is driven by the servo motor on the carrying main platform through the transmission four-bar mechanism; the carrying main platform is supported by the main platform bracket based on the 3-PUU kinematic chain, and has The space has three degrees of freedom in translation, which can be lifted up and down and moved in a plane. The present invention is based on the 3‑PUU and 3‑RUU kinematic chains at the same time, which can enable the carrying main platform to obtain a spatial range of motion, not only can be raised and lowered, but also can be moved in a plane, and then the end of the second-stage moving platform (Delta type parallel robot body) can be executed. Components) have a larger accessible workspace and flexible workspace.

The invention relates to a preparation method of positive electrode slurry suitable for a 12V start-stop power supply, belongs to the technical field of automobile start-stop battery systems, and mainly solves the problems that small-particle-size particles are difficult to disperse and the dispersion time is long when the nanoscale lithium iron phosphate positive electrode slurry is prepared at present. The method is mainly characterized by comprising the following steps: premixing a positive active material, a conductive agent and a binder by using a three-shaft stirrer; adding part of the solvent for wetting; adding part of the solvent for pre-kneading; kneading in a three-shaft stirrer; adding the residual solvent, and diluting to proper viscosity; and vacuumizing and defoaming to obtain the lithium iron phosphate slurry suitable for coating. A high-viscosity kneading process is adopted, a solvent is gradually added into solid powder, the dispersion effect is improved by utilizing the action force that materials are continuously extruded, stretched, folded, sheared and the like under the high solid content, and the preparation method is mainly used for preparing the 12V start-stop power supply positive electrode slurry.

A life-saving apparatus for high building is composed of a rotary shaft with damping unit and centrifugal unit, left and right slide bearings and left and right chain wheels respectively arranged at both ends of said rotary shaft, left and right endless chains engaged with said left and right chain wheels, and a group of horizontal bars fixed between said left and right endless chains.

The invention discloses a differential locking mechanism. The differential locking mechanism comprises a differential and a locking structure. A gear C is fixedly arranged at the end, positioned outside a differential shell, of a planet gear shaft; a sleeve is fixedly arranged at one end of the differential shell; a gear D is arranged on the side, near the differential shell, of the sleeve in a sleeving manner; the gear D is rotationally connected with the sleeve; one end of the gear D is fixedly connected with a gear E; the gear E is rotationally connected with the sleeve; a longitudinal tooth groove is formed in the end, far from the differential shell, of the sleeve; a tooth sleeve is arranged on the tooth groove in a sleeving manner, is engaged with the tooth groove, and can move in the longitudinal direction of the tooth groove; teeth are arranged at one end of the tooth sleeve, and can be engaged with the gear E; an annular groove is arranged outside the tooth sleeve; and a poking fork is movably connected into the groove.

The invention discloses an efficient technical process for preparing derived fuel from high-moisture domestic waste and municipal sludge. The technique comprises the following steps: by using domestic waste and municipal sludge as main components, progressively and gradually crushing the domestic waste without manual separation or previously dehydrating and drying the domestic waste and sludge, sequentially adding a certain proportion of additives, carrying out crushing, stirring and drying twice on the mixture by a fine crushing-stirring-molding integrated machine to sufficiently pulverize the domestic waste, and thoroughly mixing the sludge with the domestic waste and additives to carry out modification treatment; and carrying out extrusion molding on the sludge by a molding machine by using the viscosity of the sludge, and finally delivering to a low-temperature drier to carry out baking. The invention achieves the goals of energy saving and zero discharge in the production process.

The invention discloses a technique for preparing derived fuel from municipal sludge and biomass, which is an energy-saving and efficient industrialized preparation technique. The technique comprises the following steps: previously baking or dehydrating the main component municipal sludge, proportionally adding biomass and additives, carrying out crushing, stirring and drying twice on the mixture by a fine crushing-stirring-molding integrated machine to sufficiently pulverize the biomass, and thoroughly mixing the sludge with the biomass and additives to perform modification treatment; and carrying out extrusion molding on the sludge by a molding machine by using the viscosity of the sludge, and finally delivering to a low-temperature drier to carry out baking. The invention achieves the goals of energy saving and zero discharge in the production process.

The invention discloses a synthesizing method of N-ethyl piperazine, which comprises the following steps: adopting Cu-Co-M0 / Al2O3 as catalyst with 1-70% Cu, 1-90% Co,1-30% Mo, 0.1-10% Ni, 0.05-10% Mn, 0.01-5.0% Mg, 0.01-5.0% Cr and Al2O3; setting the pressure of liquid phase at 0.1-10.0Mpa under 80-350 Deg C in the interval course with surplus piperazidine; making the molar rate of piperazidineand alcohol at 0.5-10.0 with 0.1-5.0% catalytic cracking quantity.