75results about How to "Prevent runaway" patented technology

The invention relates to a detection device used in a fused deposition type three-dimensional printer. The detection device comprises a mounting seat and a first detection unit, wherein the first detection unit comprises a first detection wheel, a spring, a first photoelectric sensor as well as a positioning roller and an extrusion roller rotatably mounted on the mounting seat; an axis of the extrusion roller is parallel to that of the positioning roller, and the distance between the axes is adjustable; restoring force of the spring enables the distance between the axis of the extrusion roller and the axis of the positioning roller to be reduced; a channel for wire forming is formed between a working surface of the extrusion roller and a working surface of the positioning roller wheel; the first detection wheel is coaxially connected with the extrusion roller or the positioning roller in an equal-angular-speed manner; the first detection wheel comprises a base part and a covering part circumferentially arranged along the base part; a light path of the first photoelectric sensor penetrates through a plane formed by rotating the covering part around an axis of the first detection wheel. The detection device can be used for detecting whether the three-dimensional printer has the problems of empty printing and the like or not. In addition, the invention further provides the three-dimensional printer employing the detection device and a printing method of the printer.

A non-aqueous electrolyte secondary battery comprises a positive electrode, a negative electrode, two kinds of separators and an non-aqueous electrolytic solution, wherein the positive electrode, the negative electrode and the separators are laminated and wound to form a wound electrode body. The secondary battery is characterized in that the first separator having a gas permeability of 400 sec/100 cm³ or less is provided on the outer surface of the negative electrode, and the second separator having a coefficient of thermal shrinkage of 30% or less in a transverse direction is provided on the inner surface of the negative electrode.

A transmission state determination method of a power transmission device for an internal combustion engine driven vehicle including steps of: driving a generator by an internal combustion engine with a vehicle driven by the internal combustion engine stopped; performing an intake air amount gradually increasing process for gradually increasing the intake air amount of the internal combustion engine when the internal combustion engine is controlled so as to generate predetermined power from the generator; determining that the power transmission device for transmitting the output of the internal combustion engine to wheels of the vehicle is in a state of transmitting power when slight movement of a vehicle body is detected in the intake air amount gradually increasing process; and determining that the power transmission device is in a state of cutting power transmission when movement of the vehicle body is not detected in the intake air amount gradually increasing process.

An exposure method for manufacturing a liquid crystal display utilizes a scanning exposure apparatus to expose a pattern of a mask onto a glass plate. The exposure method includes a step of moving a mask stage that holds the mask in a scanning direction by a first electromagnetic actuator. The first electromagnetic actuator moves the mask stage associating with a guide member that extends in the scanning direction. The method also includes the step of moving the mask stage in a non-scanning direction different from the scanning direction by a second electromagnetic actuator. The second electromagnetic actuator moves the mask stage associating with no guide member, and a moving distance in the non-scanning direction by the second electromagnetic actuator is shorter than a moving distance in the scanning direction by the first electromagnetic actuator.

The invention relates to a method for planting oat by utilizing yellow river delta coast salinized soil. The method comprises the following steps of: (1) applying crop straws and thoroughly decomposed farm manure onto the surface of the yellow river delta coast salinized soil, deeply ploughing and leveling; (2) irrigating deeply land ploughed and leveled in the step (1) before seeding; (3) uniformly spreading a soil ecological modifying agent and the compound fertilizer at the same time after all surface water permeates into soil, and carrying out rotary tillage; and (4) ridging after rotary tillage, seeding oat from the last ten days of March to the beginning of April, and compacting after seeding; and (5) carrying out childbearing period irrigation, fertilization, pest control, weed control and harvesting. The method disclosed by the invention has the advantages of low investment, can continuously improving the soil structure and can realize certain economic benefit.

The invention provides an impact tool capable of inhibiting vibration of a tool body generated while hammering process, lessening counterforce to the processed material after impact motions and rationalizing structure of the device. The impact tool includes a tool body (103); a dynamic vibration reducer (161) having a heavy block (163) and elastic components (165F, 165R) and inhibiting vibration while the hammering process; a positioning elastic element which positions the tool body (101) with respect to the processed material prior to the hammering process, so as to, under the positioning state, absorb a counterforce caused by rebound from the processed material and acting on the hammer actuating members (119, 145) when the hammer actuating member (119, 145) perform the hammering process on the processed material. The positioning elastic element includes the elastic elements (165F, 165R) formed as component parts of the dynamic vibration reducer (161).

A process is described for preparing a catalyst comprising at least one porous support and at least one metallic phase containing nickel and tin in a proportion such that the Sn/Ni molar ratio is in the range 0.01 to 0.2, said process comprising at least the following steps in succession:

• • a) depositing nickel on at least said support in order to obtain a supported nickel-based monometallic catalyst;
  • b) reducing said monometallic catalyst in the presence of at least one reducing gas;
  • c) depositing, in the gas phase and in the presence of at least one reducing gas, at least one organometallic tin compound onto said reduced monometallic catalyst; and
  • d) activating the solid derived from said step c) in the presence of at least one reducing gas.

The invention provides a colour wheel, comprising a motor with a rotation shaft, a filter group, and a positioning ring; the filter group comprises a plurality of filters which are adjacently attached to each other; the filter group is provided with a central hole which is sleeved with the rotation shaft of the motor; the central part of the positioning ring is provided with a through hole; each filter is provided with a convex platform which extends from the edge of the central hole to the circumference of the filter; each convex platform is adjacently attached to each other so as to form a convex platform group; the dimension of the convex platform group is corresponding to the through hole of the positioning ring; the convex platform group is clamped inside the through hole of the positioning ring. The colour wheel structure can prevent the filter from flying away.

The invention is suitable for the technical field of saline-alkali soil improvement, and provides a method for improving the soil fertility of saline-alkali soil by planting sesbania. The method is characterized by comprising the steps of deep ploughing, irrigation and salt separation, wherein soil turning is carried out, weeds of the saline-alkali soil are removed, a compact soil layer is formedbelow the earth surface, and underground water high in salt content is prevented from moving upwards; sowing and fertilizing, wherein seeds need to be soaked or sand is added for wiping the seeds before sesbania sowing, a single sowing mode is used, phosphorus fertilizer is applied, the yield of sesbania is increased, and the content of nitrogen and phosphorus in sesbania is increased; harvestingand fertilizer retention, wherein after the sesbania is ripe, direct ploughing is conducted, straw and livestock manure can be heaped and applied to serve as base fertilizer or conduct topdressing, stalks need to be cut off, chopped and completely buried in the soil layer to prevent moisture evaporation, after sesbania is turned, the total quantity of water-stable aggregates of soil is increased,the soil volume weight is reduced, the porosity is improved, and the soil can be prevented against salt return. Therefore, the fertility of the saline-alkali soil can be improved, and conditions of the saline-alkali soil for planting crops are improved.

A method for bulk polymerization of monomers having a polymerizable unsaturated bond consisting mainly of an alkyl acrylate, which comprises adding a polymerization initiator having a 10 hours half-life temperature of 41.0° C. or below to the monomers in an amount of 0.0001 to 0.5 parts by weight based on 100 parts by weight of the monomers to initiate polymerization of the monomers, allowing after the reaction initiation the temperature of the reaction mixture to reach a maximum of 100 to 140° C. by the self-exotherm of the reaction system due to the consumption of the polymerization initiator, and thereby polymerizing 15 to 50% by weight of the monomers used.

The invention relates to a method for storing and changing bobbins (11) on a maintenance device (3) of a spinning machine, in particular a rotor spinning machine or a ring spinning machine. The method according to the invention is characterized in that at least one cartridge (11) is stored in a first position and replaced in a second position.

The invention discloses an accident quick gate falling speed regulation device for a wind hoist and a control method. The accident quick gate falling speed regulation device comprises a brake, a height gauge, a speed sensor and a controller. The balancing magnitude relation of damping torque and holding force of the brake is controlled by acquiring the comparison value of the gate falling speed and the predetermined speed, and the purpose that a gate falls down at the predetermined speed is achieved; by acquiring the gate falling speed and the position signal, control is conducted according toa sequence closing method, quick falling of the gate and timely water flowing speed reduction are achieved, a hydraulic turbine set is prevented from operating in a runaway manner, the gate slowly falls into a bottom sill, the impact is reduced, and the gate and the bottom sill are protected from being damaged due to impact. According to the accident quick gate falling speed regulation device forthe wind hoist and the control method, the full-closed-loop automatic redundancy design is adopted, it is guaranteed that the gate is quickly, stably and safely closed in time under the accident state.

The invention discloses a processing method of scallion, which comprises the following steps that: prewashing; first-time dipping sterilization; fine washing; second-time dipping sterilization; segmentizing; third-time dipping sterilization; pre-cooling in ice water; and quick freeze, so a finished product is obtained. Due to adoption of the processing method, the hygiene and safety problem of the scallion can be well solved, thorough removal of impurities, thorough decontamination and thorough removal of residual sterilizing agent of raw materials can be guaranteed; and pollution of microorganisms on the scallion can be maximally reduced, and the taste of the scallion can be maximally maintained.

This invention relates to a composite material for neutron shielding and maintenance of sub-criticality comprising a matrix based on vinylester resin and an inorganic filler capable of slowing and absorbing neutrons. The vinylester resin may be an epoxymethacrylate resin and the inorganic filler may contain a zinc borate and an alumina hydrate or magnesium hydroxide.

The invention discloses a bead rotating plate of a beading machine. The bead rotating plate comprises a rotating plate main body, a rotating blade and bead outlet parts, wherein the rotating plate main body is provided with a groove for containing the beads; the rotating blade is installed in the groove of the rotating plate main body; the bottom of the groove of the rotating plate main body is provided with fixed holes, the bead outlet parts are nested in the fixed holes, and the bead outlet parts are provided with bead outlet holes. Compared with the prior art, the bead rotating plate of the beading machine can accelerate the transferring speed of the beads, so that the transferring speed of the beads can keep up with the beading transferring speed, the transferring efficiency of the beads can be increased, and the beading efficiency of the beading machine can be improved.

The invention discloses a casting mold for increasing mold thickness. The casting mold comprises a sand box, molding sand, a pouring cup and a riser, wherein the riser is arranged at the rear side ofthe hot joint position at the edge of the sand box, so that an original mold with one cavity is changed into a mold with two cavities, or the mold with two cavities is changed into a mold with four cavities; the safe mold thickness is sufficiently ensured; the running-out phenomenon of a casting during casting process will not occur; and the safe pouring without running-out is ensured while the utilization of the sand box is improved.

The invention discloses an energy-saving and environment-friendly anti-burst limestone kiln. The limestone kiln comprises a kiln body and a combustion chamber,wherein the combustion chamber is arranged in the kiln body,an automatic feeding inlet is formed in one side on the top of the combustion chamber,a fume exhaust pipe is connected with the other side on the top of the combustion chamber,and an automatic ash discharging outlet is formed in the bottom of the combustion chamber. A cavity is formed between the outer side of the combustion chamber and the inner side of the kiln body,a plurality of supporting devices are arranged in the cavity,each supporting device comprises a second supporting plate and a transverse plate,the sides,away from the second supporting plates,of the transverseplates are fixed to the outer wall of the combustion chamber,and the two ends in the middles of the other sides of the transverse plates are provided with second support rods respectively. The sides,away from the transverse plates,of the second support rods are provided with connection rods respectively,the sides,away from the second support rods,of the connection rods are provided with supportingcolumns respectively. The energy-saving and environment-friendly anti-burst limestone kiln has the advantages that the capacity of bearing the pressure between the kiln body and the combustion chamber is improved,and the leak-out and air-leakage phenomena are prevented.