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

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 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 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 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 provides an air deflector and an air conditioner comprising same. The air deflector comprises an external board, an internal board and a reinforcing structure which is arranged inside a hollow internal chamber to form into the air deflector; the external board is provided with the hollow internal chamber. The air conditioner comprises the air deflector which is the provided air deflector. According to the air deflector, the air deflector is arranged to be in an external board structure which is provided with a hollow portion, the internal board is arranged inside the hollow internal chamber to reinforce the air deflector structure, then a supporting base structure in the prior art is saved, meanwhile the intensity of the air deflector is increased, deformation of the air deflector is reduced or avoided, the air deflector does not generate influence to air guiding, and the integral aesthetic sense of the air conditioner is increased.

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 snap spring, a pressure limit valve and a home appliance. The snap spring comprises an outer ring portion and two fastening portions, the outer ring portion is provided with notches, and the two fastening portions are connected at two notch ends of the outer ring portion and extend closely to the outer ring portion. The fastening portions are of convex arc-shaped structures, and one side of each convex arc-shaped structure facing the notches is a convex side. By the snap spring, the fastening portions are of convex arc-shaped structures, the convex sides of the convex arc-shaped structures are fastened with an object to be fastened via a point-side stress way, so as to reduce stress area of the fastening portions and achieve the purpose for reducing or avoiding deformation and falling of the snap spring.

The invention discloses an electric arc spraying system and a method for preparing a micro metallurgically bonded spraying coating. The method comprises the steps of: firstly connecting to form the electric arc spraying system, wherein the anode and the cathode of a first power supply are respectively connected with two spraying wires, the first power supply is connected with a first wire feeding machine, a second power supply is connected with a second wire feeding machine, a gas device is connected with an arc pistol and located at the center of the arc pistol, the two spraying wires are connected with the arc pistol, the accurate alignment of two polar wires is ensured through an alignment device and included angles of the two wires are adjusted; then fixing a workpiece on a clamp; and starting a spraying power supply and adjusting proper technological parameters to carry out spraying.. By using the technical scheme of the invention, the preparation method of the spraying coating also can be used for spraying priming layers and mass micro metallurgic bonding areas are formed between the coatings, so that matrixes can be micro metallurgically bonded with the coatings under non-overheating condition so as to improve the bonding strength.

The invention discloses a lifting horse for lifting a thin plate segment. The lifting horse comprises a main plate and a connecting plate, wherein the main plate is provided with a lifting end and a connecting end along an extending direction; the lifting end is provided with a lifting hole; the connecting plate is connected with the connecting end along the extending direction; and one end, far away from the main plate, of the connecting plate is used for connecting a mother plate of the thin plate segment. The thickness of the main plate is first thickness, the thickness of the connecting plate is second thickness, the range of the first thickness is 20 to 30 mm, and the range of the second thickness is 8 to 12 mm. The main plate and the connecting plate are spliced together along the extending direction; and relative to the prior art, the lifting horse has the following advantages that a web plate is omitted, assembling and welding of lifting horse assembling are reduced, the thin connecting plate is used for connecting the mother plate, and the influence on the mother plate of the thin plate segment by lifting horse mounting, welding and dismounting is reduced, so that deformation of the thin plate segment is reduced or avoided.

The present disclosure provides a "hole bridge cooling channel". The present disclosure provides a system for cooling a cylinder block via a bore bridge cooling passage. In one example, a cylinder block having a bore bridge positioned between a first cylinder and a second cylinder has at least one cooling passage positioned within the bore bridge, the cylinder block further including a coolant jacket at least partially surrounding the first cylinder and the second cylinder. An inlet of the at least one cooling channel has an area greater than an outlet of the at least one cooling channel, and at least a portion of the at least one cooling channel has a non-cylindrical geometry formed by the indwelling core.

The invention relates to a field of deslagging equipment and discloses an air-cooled dry-type deslagging system, a slag pit liner and a construction method thereof. The slag pit liner is arranged on the inner side surface of a slag pit wall (1) and includes a calcium silicate board layer (2) comprising a calcium silicate board; a fireproof castable layer (3) arranged on a side, away from the slag pit wall (1), of the calcium silicate board layer (2) in a fitting manner; an anchoring nail (4) connected to the inner side surface of the slag pit wall (1) and penetrates through the calcium silicate board layer (2) and the fireproof castable layer (3) and extends. According to the invention, when large blocks of slag fall onto the fireproof castable layer (3), the calcium silicate board layer (2) can provide full support and the calcium silicate board can be laid on the slag pit wall (1) so as to form the calcium silicate board layer (2) to act as a thermal insulation layer. The invention has advantages of good protection effect, simple construction technology and the like.

The invention relates to an air inlet device and refrigeration equipment, the air inlet device comprises an impeller and an air guide mechanism, the impeller comprises a mounting disc and a plurality of blades, and the blades are connected to the mounting disc in a cyclone shape; the air guide mechanism comprises a bottom plate, an air guide ring and a plurality of supporting columns, an air inlet is formed in the air guide ring, the air guide ring and the bottom plate are connected through the supporting columns, a containing space is formed between the air guide ring and the bottom plate, and an air outlet communicated with the containing space is formed in the circumferential direction of the air guide mechanism; the impeller is located in the containing space, and an airflow gap is formed between the air guide ring and the impeller. According to the air inlet device, the air guide ring and the bottom plate which are connected through the supporting columns are arranged, so that the possibility of deformation of the air guide ring is reduced or avoided, then the situation that the width of the gap between the air guide ring and the impeller is increased is avoided, and the problem that in the prior art, the air inlet amount is lost due to deformation of the air guide ring is solved.

The invention discloses a process for preventing anodic oxidation deformation of a bolt bottom plate of a DaVinci test socket. The process is characterized by comprising the following operation steps:step 1, reserving allowance on the bolt bottom plate before first anodic oxidation; step 2, carrying out anodic oxidation treatment on the surface of the bolt bottom plate; step 3, cutting off the allowance reserved on the bolt bottom plate, and processing the outline of the product; meanwhile, machining holes needing to be conducted; step 4, protecting all areas except the outer contour edge ofthe product by using a high-temperature-resistant and acid-corrosion-resistant adhesive tape; step 5, carrying out secondary anodic oxidation treatment; the processis simple in process and convenientto operate; the influence of heat generated by anodic oxidation treatment on the positions of the pin mounting holes is effectively reduced, the change of the shapes and the positions of the small holes can be effectively reduced or avoided, the quality stability in the product technological process is ensured, and mass production becomes possible.