30results about How to "Reduce or avoid deformation" patented technology

The invention aims to provide an automobile side step fixing structure. The strength of installing points of a side step can be improved significantly, collapse of the side step existing in the using process of a passenger is avoided, and the safety and the reliability of the side step are improved by a large margin. According to the automobile side step fixing structure, the side step is fixed on an automobile threshold through a fixing bracket, and the key is that the fixing bracket comprises a lower support plate, an upper fixing plate and a middle connecting plate; the support plate is in a horizontal state, and the support plate is fixedly connected with the side step erected on the upper portion of the support plate through bolts; the fixing plate is in an oblique state and located on the outer side of the automobile threshold, and the fixing plate is fixedly connected with the automobile threshold through bolts; the connecting plate is integratedly composed of a lower connecting plate and an upper connecting plate, an included angle between the upper connecting plate and the lower connecting plate and an included angle between the upper connecting plate and the fixing plate are both obtuse angles, and opening directions are opposite; and one sides, away from the side step, of the fixing plate and the upper connecting plate are attached to the automobile threshold.

The invention relates to a wool knitted fabric shape-remembering finishing agent. The finishing agent comprises a waterborne polyurethane composition and a crosslinking agent, wherein the content of the waterborne polyurethane composition in the finishing agent is 2-8%, and the content of the crosslinking agent is 1.5-3% of the content of the waterborne polyurethane composition. The effectiveness of the crosslinking agent lies in that the crosslinking reaction temperature of polyurethane is reduced to 90-110 DEG C. The invention also provides a preparation method and application of the wool knitted fabric shape-remembering finishing agent. The wool knitted fabric treated with the provided shape-remembering finishing agent can be washed by a machine and dried by stoving, is easy to maintain, can remember the original shape of the fabric, can reduce the conditions of folding and distorting and has favorable anti-pilling performance, length-deformed recovery performance, fold recovery performance and better hand feel.

The invention discloses a thin-wall round tube inner hole honing fixture which comprises a fixture body, a left end cover, a right end cover, three driving hydraulic cylinders and a pipeline system, wherein the left end cover and the right end cover are connected with the two ends of a thin-wall round tube through threads, and the pipeline system injects or discharges hydraulic oil in or out of the driving hydraulic cylinders. The three symmetrically arranged driving hydraulic cylinders drive the left end cover and the right end cover to move in the fixture body, thereby realizing axial mechanical tensioning of a workpiece. Emulsified liquid at given pressure is injected in a sealed space formed by the workpiece and the fixture body to improve the compressive strength of the workpiece, so that a situation that no workpiece deforms in a processing procedure can be ensured to the full extent, a rejection rate is reduced, the processing precision is improved, and the defects of the conventional thin-wall round tube inner hole processing fixture can be overcome. The thin-wall round tube inner hole honing fixture has the characteristics of simple structure, convenience in mounting and operation, wide processing range, high adaptability, long service life, low equipment cost, low operation power consumption, etc., and can also be used for boring, turning and milling of a thin-wall round tube workpiece.

The invention provides a manufacturing method of a continuous rolling production line roller bed blank. The manufacturing method comprises the following technological characteristics that (1) thick plate components of a roller bed are discharged in an embedded nesting discharge manner; (2) after bottom plates of a transmission side roller bed and an operation side roller bed are fixed back to back, assembly and welding of components are carried out, symmetrical weld seams of the transmission side roller bed and the operation side roller bed are welded at the same time during assembly and welding, and construction is carried out from the two end parts of the two roller beds to the middle parts; and (3) after assembly and welding of the transmission side roller bed and the operation side roller bed, integral annealing is carried out. According to the manufacturing method of the continuous rolling production line roller bed blank, deformation of the roller bed blank can be effectively reduced or avoided, the utilization rate of raw materials can be greatly increased, and manufacturing cost of a continuous rolling mill roller bed blank is reduced.

The invention aims to provide an automobile side step fixing structure. The strength of installing points of a side step can be improved significantly, collapse of the side step existing in the using process of a passenger is avoided, and the safety and the reliability of the side step are improved by a large margin. According to the automobile side step fixing structure, the side step is fixed on an automobile threshold through a fixing bracket, and the key is that the fixing bracket comprises a lower support plate, an upper fixing plate and a middle connecting plate; the support plate is in a horizontal state, and the support plate is fixedly connected with the side step erected on the upper portion of the support plate through bolts; the fixing plate is in an oblique state and located on the outer side of the automobile threshold, and the fixing plate is fixedly connected with the automobile threshold through bolts; the connecting plate is integratedly composed of a lower connecting plate and an upper connecting plate, an included angle between the upper connecting plate and the lower connecting plate and an included angle between the upper connecting plate and the fixing plate are both obtuse angles, and opening directions are opposite; and one sides, away from the side step, of the fixing plate and the upper connecting plate are attached to the automobile threshold.

A three-dimensional memory and its manufacturing method. The three-dimensional memory includes: a storage unit and a logic control unit that are bonded to each other on the front, and the logic control unit is connected to a control circuit. It is characterized in that the second metal wire of the storage unit and the first The metal wires are respectively arranged on the upper and lower sides of the channel layer in the memory unit, and both the first metal wire and the second metal wire are electrically connected with the control circuit. By arranging the second metal wire and the first metal wire respectively on the upper and lower sides of the channel layer in the memory cell, by separately arranging the first metal wire and the second metal wire so that the distribution of the metal wire becomes balanced, reducing or The deformation of the storage unit is avoided; at the same time, the metal wiring is simplified by scattered arrangement of the first metal wire and the second metal wire, so that the layout of the connection circuit between the first metal wire and the second metal wire and the control circuit is relatively simple, and the connection is improved. Reliability, avoiding connection reliability problems in the prior art caused by complex layout and process problems.

The invention discloses a method for evaluating risks of a high rock slope. The method for evaluating the risks of the high rock slope comprises the following steps: (1) constructing a risk evaluation index system, (2) defining classification levels, (3) carrying out dimensionless processing on indexes, (4) determining comprehensive weight of evaluation indexes, and (5) evaluating risk states of the slope. By means of the method for evaluating the risks of the high rock slope, factors which influence stability of the slope are comprehensively analyzed and identified, a subjective weighting method and an objective weighting method are combined, and the attribute recognition theory and the maximum attribute measure principle are adopted to indentify the risk states of the slope. Compared with other methods in the prior art, the method for evaluating the risks of the high rock slope overcomes the defects that a safety factor method can not express the change degree of the risks of the slope and reflect uncertainty and randomness of the risks of the slope, subjective preference and objective laws are comprehensively measured, evaluation and judgment are more reasonable, and high engineering significance and practical values are possessed.

The invention provides a connecting device. The connecting device comprises a lower base, an upper base, two connecting rods, two compression springs and a pin, wherein the lower base comprises a lower bottom plate and a bulge on the lower bottom plate; the upper base comprises an upper bottom plate and a convex shell on the upper bottom plate; the bulge is arranged in a cavity of the convex shell; two through holes into which the connecting rods are inserted are formed at the two ends of the lower bottom plate; two through holes into which the connecting rods are inserted are also formed at the two ends of the upper bottom plate; the rod parts of the connecting rods pass through the through holes of the lower bottom plate, the through holes of the upper bottom plate and the compression springs in turn; a pin hole is also formed on the bulge on the lower bottom plate; pin holes are formed on the two sides of the convex shell on the upper bottom plate; the pin passes through the pin hole on one side of the convex shell, the pin hole on the bulge, and the pin hole on the other side of the convex shell in turn; the pin hole on the bulge is strip; and the pin can relatively move in the pin hole on the bulge in the axial direction of the connecting rods. The invention has the advantage that: when outside wind power is high, the wind resistance of a light box which is arranged by the connecting device provided by the invention is improved.

The invention discloses a method for machining a thin-wall separation type solid retainer, and relates to the technical field of design and manufacture of retainers. According to the method, the problems that an existing thin-wall separation type bearing solid retainer is large in machining difficulty, easy to deform, the interior of the retainer, the outer diameter precision and the rivet hole machining precision are low, and the product machining quality is difficult to guarantee are solved; the method for machining the thin-wall separation type solid retainer is realized through the following steps that 1, finely turning is sequentially carried out on a first plane and a second plane, the outer diameter is coarsely ground and finely turning is carried out on the inner diameter; 2, solidsolution strengthening is carried out; 3, turning are both carried out on two planes ; 4, the finely turning is carried out on the outer diameter; 5, the inner diameter is finely ground; 6, a rivet hole is drilled; 7, a bolt is inserted; 8, a pocket is drilled and milled; 9, the outer diameter is finally milled; 10, final turning is carried out on the inner diameter; 11, the bolt is removed, deburring is carried out, and finishing is carried out; and 12, fluorescent permeation flaw detection is carried out. The method is used for improving the interior of the retainer, the outer diameter precision and the rivet hole machining precision of the thin-wall separation type solid retainer.

The invention discloses a propeller arm connection assembly. Propeller arms are installed on a machine body of an aircraft. Each propeller arm comprises a propeller arm first segment and a propeller arm second segment. The propeller arm connection assembly comprises a first connecting base and a second connecting base fixedly connected with the first connecting base in a butting mode through electric connectors. The first connecting base is connected with the propeller arm first segments, and the second connecting base is connected with the propeller arm second segments. At least one of the first connecting base and the second connecting base is in non-fixed limiting connection with the corresponding propeller arm first segment or the corresponding propeller arm second segment. According to the propeller arm connection assembly, one connecting base can swing together with the other connecting base which joggles under the condition that the propeller arm segments provided with paddles joggle; deformation of the electric connectors is reduced or avoided; and therefore poor contact in the subsequent connection process is avoided, and stability and safety of the aircraft are greatly improved.

The present application belongs to the technical field of cooking utensils, and in particular relates to an oven. The oven in this application includes a stove top, a stove top bracket, a backboard, a hoarding and a connecting bracket. On both sides of the cooktop board and used to support the cooktop board, the front end of the enclosure is provided with a first installation hole and a second installation hole, the cooktop bracket is connected with the enclosure through the first installation hole and the second installation hole, and the enclosure The rear end of the board is connected to the backplane through a connecting bracket. According to the oven in the present application, the stress on the front and rear ends of the enclosure can be improved at the same time, effectively improving the overall force distribution of the enclosure, thereby preventing the overall deformation of the enclosure, thereby reducing or avoiding the deformation of the stovetop.