275results about How to "Reduce friction area" patented technology

A positioning member is coupled to a mounting plate, which defines a plurality of holes for receiving screws for connection with an end of an external object. An upper adjustment nut sets a distance between a roller seat and the mounting plate and to provide a securing function by cooperating with a roller seat nut and a roller seat bolt. The mounting plate forms in a central portion thereof an elongate slot for slidably receiving a neck of the axle therein. The positioning member includes a plate-like body forming a straight slot and an inclined slot for leading the neck therein and is provided with a rivet or a resilient fork-like fastener at one side of the inclined slot opposite to the straight slot to be fit into the a positioning hole defined beside the elongate slot for serving as a rotational axis of the positioning member.

A pressure adjustable knife set for an electromotive hair cutter comprises: a fixed knife, a movable knife, and a pressure adjust unit; a front edge of the fixed knife having a cutting edge; the fixed knife being formed with a penetrating hole for passing through the adjustable screw of the pressure adjusting unit; a front edge of the movable knife being formed with a cutting edge; a lower side of the movable knife being formed with a supporting leg; the supporting leg being formed with a plurality of heat dissipating holes with a further function of reduction of the friction area of the supporting legs; the movable knife being formed with a penetrating trench; and a fixing plate being installed between the fixed knife and the pressure adjusting unit; an adjustable screw passing through a penetrating hole of the fixed knife, the movable knife and the pressure adjusting unit.

The invention relates to a thin straight-piece product stacking machine. The thin straight-piece product stacking machine is provided with a machine frame, a feeding mechanism arranged on the machine frame, a piece arranging mechanism and a pushing hand mechanism. A limiting mechanism is arranged at the position of the piece arranging mechanism corresponding to the feeding mechanism, and the pushing hand mechanism is arranged on one side of the piece arranging mechanism and is provided with a small package pushing hand and two bagging pushing hands symmetrically arranged on the left side and the right side of the small package pushing hand. Two compaction mechanisms are controllably slidably arranged at the position of the other side of the piece arranging mechanism corresponding to the pushing hand mechanism, the sliding direction of the two compaction mechanisms and the moving direction of the piece arranging mechanism are consistent, each compaction mechanism is provided with an adjustable fixed compaction plate and a slidable compaction plate, and the center distance between the small package pushing hand and each bagging pushing hand is matched with the distance between the two compaction mechanisms. The thin straight-piece product stacking machine can adapt to accurate piece arrangement and high-speed stacking of thin straight-piece products, works stably and is high in working efficiency and reasonable in design.

An improved drum brake assembly for reducing braking vibrations and noise. The improved assembly includes a pair of shoes, each extending through an arc and presenting an outer shoe surface. A pair of brake linings of a friction material are coupled to the outer shoe surface. Each of the brake linings has an upper surface and a pair of oppositely facing chamfered edges. Each chamfered edge has an arc length of no less than one inch and is disposed at an angle of between ten and twenty-five degrees from the tangent of the upper surface where it meets the chamfered edge.

A reciprocating compressor comprises: a cylinder having an oil pocket on an inner circumferential surface of a piston insertion hole for inserting a piston with a predetermined width and depth; and a piston having a bearing portion protruding so as to slidably contact an inner circumferential surface of the piston insertion hole, and inserted into the piston insertion hole of the cylinder, wherein the bearing portion is formed to have a length shorter than that of the oil pocket of the cylinder. Accordingly, a frictional loss between the cylinder and the piston is reduced.

The invention, which belongs to the technical field of the gas injection valve, especially relates to a gas injection valve with a buffer mechanism. A buffer mechanism is arranged at the front side of a valve body and contains a housing, a front end cover, and a rear end cover; and the housing, the front end cover, and the rear end cover are fixed at the front side of the valve body by fasteners. A through hole is formed in the rear end cover; and a head of a valve rod part passes through the through hole and extends into the housing. A buffer block is arranged inside the housing; and a buffer spring is clamped and compressed between the buffer block and the front end cover. When the gas injection valve is closed, the buffer effect is good; and when the valve is opened, no damping occurs and the response speed is fast.

The invention discloses an anti-drag device capable of adjusting the wheel spoke hole area automatically, and relates to an anti-drag device capable of changing the hole area between spokes automatically according to the automobile speed. The anti-drag device solves the problem that the wind drag coefficient of a wheel and fuel consumption are enlarged when an automobile is driven at high speed due to the fact that air eddy is generated in a wheel cavity or positions nearby with the existence of a hole between the spokes. The anti-drag device is composed of a supporting frame, foliated cover plates and connecting transmission parts arranged between the supporting frame and the foliated cover plates, the supporting frame is fixed on a wheel hub and is located between a brake disc flange and the wheel hub, and the foliated cover plates are capable of rotating around the supporting frame. The anti-drag device does not work when the automobile speed is lower so that heat generated by frequent braking of the automobile can be emitted effectively and cannot influence the automobile. The anti-drag device is capable of decreasing the hole area between the wheel spokes automatically along with the increase of the automobile speed until the wheel hole is close to entirely closed, so that the wind drag coefficient of the automobile wheel is reduced greatly, fuel consumption is reduced, and the automobile fuel economy is improved.

The present invention prevents an unrubbed portion caused by asperities formed on a surface of an alignment layer of a TFT substrate or a counter substrate. A TFT substrate is disposed on a rubbing stage and a projecting portion is formed on a surface of the TFT substrate by TFT wiring. The projecting portion on the surface causes an unrubbed portion, that is, a rubbing shadow particularly at the downstream of rubbing. In a rubbing step, two rubbing rollers that rotate in different directions are provided and the TFT substrate is rubbed in contact with the two rubbing rollers that rotate in different directions, which eliminates the influence of the rubbing shadow. Thus light leakage is prevented in black display.

The invention relates to a grinding machine, in particular to a lower die grinding machine for a bracket punching die. Therefore, the technical aimof the invention is to provide the lower die grindingmachine for the bracket punching die, wherein the lower die grinding machine for the bracket punching die is capable of preventing physical strain and improving grinding efficiency. According to thetechnical scheme, the lower die grinding machine for the bracket punching die comprises a base, a frame, sliding rails, first sliding blocks, first springs, a transverse bracket, a U-shaped plate, a rack, bearings, a shaft rod, a turntable, a first gear, a servo motor and the like. The frame is fixed on the top of the base which plays a supporting role, the two sliding rails are correspondingly installed on the upper parts of the left wall and the right wall in the frame, and the sliding rails are slidably connected with the first sliding blocks. According to the lower die grinding machine, asector gear drives a mounting seat to swing, so that a grinding disc can be tilted through a rotating motor, the friction area during grinding of the grinding disc and a lower die can be reduced, anda worker is not required to grind the die with a hand-held grinding stone, so that physical strain is prevented, and the grinding efficiency is improved.

The invention provides a filter net assembly and an air conditioner. The filter net assembly comprises an installation frame and a filter net. The installation frame is used for being connected with an air conditioner body. The filter net is detachably arranged on the installation frame. The installation frame and the filter net are connected through a clamped connection type sliding groove assembly which comprises a sliding groove part and a clamped connection sliding part. The sliding groove part is arranged on the installation frame and comprises a groove portion and an anti-disengagement portion. The anti-disengagement portion is arranged on an opening of the groove portion and provided with a passing groove. The clamped connection sliding part comprises a connection portion and a clamped connection portion which are connected. One end of the connection portion is connected with the filter net, the other end of the connection portion is connected with the clamped connection portion, the connection portion is detachably installed in the passing groove, the clamped connection portion is movably installed in the groove portion, and the anti-disengagement portion prevents the clamped connection portion from being disengaged from the groove portion. By applying the technical scheme, the problem that a filter net of an air conditioner in the prior art is difficult to detach and install is solved.

The embodiment of the invention discloses an all-cutting-edge knife flywheel which comprises a first knife flywheel disk surface, a second knife flywheel disk surface and a shaft hole, wherein the shaft hole is positioned at the center of the knife flywheel and extends along the transverse direction. The all-cutting-edge knife flywheel comprises a first curved surface and a second curved surface, wherein the first curved surface extends to the longitudinal center cross section of the knife flywheel along the outer edge of the first knife flywheel disk surface and forms smooth transition with the outer edge of the first knife flywheel disk surface; and the second curved surface extends to the longitudinal center cross section of the knife flywheel along the outer edge of the second knife flywheel disk surface, and forms smooth transition with the intersection line of the outer edge of the first knife flywheel disk surface. The intersection line of the first curved surface and the second curved surface at the longitudinal center cross section of the knife flywheel forms the circumferential cutting edge. The circumferential cutting edge is uniformly distributed with a groove. A groove inner cutting edge is arranged in the groove. According to the all-cutting-edge knife flywheel, the two side disk surfaces and the two curved surfaces for forming the circumferential cutting edge do not form sharp angles, thereby enhancing the impact resistance of the knife flywheel, lowering the friction area between the two side disk surfaces of the knife flywheel and the knife rest inner wall, and reducing the resistance in the knife flywheel rotation process.

The invention discloses a rotary excavating pile foundation double-steel-casing construction method. The rotary excavating pile foundation double-steel-casing construction method comprises the following steps that step 1, positioning and setting-out are constructed on site according to a construction drawing, a measuring grid is established, and points are measured and set out; step 2, after the position is adjusted, a guide hole is excavated; step 3, whether the pile position is consistent with the center of an outer steel casing or not is checked, the periphery of the outer steel casing is filled with soil and tamped after correction, and the outer steel casing is sunken to the height H1 through a crawler-type vibratory hammer; step 4, a positioning hoop is installed at an orifice of theouter steel casing, and then the crawler-type vibratory hammer is adopted to enable an inner steel casing to sink from the interior of the positioning hoop and penetrate through the outer steel casing to reach a dense soil layer or a strong weathered layer; step 5, a hole is formed through drilling, the hole is cleaned, and a reinforcement cage is installed; and step 6, concrete is poured, and the inner steel casing and the outer steel casing are pulled out. Compared with the prior art, the construction efficiency of the rotary excavating pile in the high backfill area is improved, and the processing quality and economic benefits of a pile foundation are improved.

The invention discloses a sliding device, in particular a slide guide rail rolling and unloading device for machine tool equipment. The device comprises a guide rail and a slide seat (1) which is positioned on the guide rail and can slide relative to the guide rail, and is characterized in that: at least three positions matched with the guide rail on the bottom surface of the slide seat (1) are provided with roller wheels (6), and the circumferential lateral surfaces of the roller wheels (6) are contacted with the upper surface of the guide rail positioned under the slide seat (1). In the device, as the slide seat and the guide rail do not directly contact, are supported by the roller wheel, and slide, the device realizes line contact of the roller wheel and the guide rail, greatly reduces the mutual friction area, reduces moving resistance, saves energy and lowers the requirement on lubrication compared with a sliding mode of surface contact.

A friction plate is formed by annularly fixing a plurality of friction material segments to a substantially annular core plate, and a minute groove is formed on a surface of the friction material segment.

The invention relates to a protective coating, having the chemical composition C_aSi_bB_dN_eO_gH_lMe_m, wherein Me is at least one metal of the group consisting of {Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W, Y, Sc, La, Ce, Nd, Pm, Sm, Pr, Mg, Ni, Co, Fe, Mn}, with a+b+d+e+g+l+m=1. According to the invention, the following conditions are satisfied: 0.45≦a≦0.98, 0.01≦b≦0.40, 0.01≦d≦0.30, 0≦e≦0.35, 0≦g≦0.20, 0≦1≦0.35, 0≦m≦0.20. The invention relates also to a coated member having a protective coating, as well as to a method for producing a protective coating, in particular a multilayer film for a member.

The invention aims to provide a billboard supporting device arranged on a lamp post. The device comprises a billboard body, a fixing strip, a spring, a bag-type billboard and the like, wherein a connection device of a foldable billboard structure of the billboard body is connected with a shedding device of a ]-shaped clamp so as to rotate by using a shaft pin; the fixing strip is used for fixing the ]-shaped clamp to the lamp post; the spring is used for connecting the connection device of the billboard body and the fixing strip; and the bag-type billboard is sleeved on the billboard structure. The billboard body is safely supported by the ]-shaped clamp; and because the friction area among various materials is small, the generated noise is low. The spring which is used for connecting the billboard body and the fixing strip can properly absorb an air pressure borne by the bag-type billboard sleeved on the billboard structure so as to prevent the billboard body or the lamp post from being damaged. Simultaneously an inside component of the billboard structure is connected with an upside component, an outside component and a downside component through hinges in turn; and when the billboard is not used, the upside component, the outside component and the downside component can be closed on the inside component, which not only prevents the appearance of a street lamp from being affected, but also ensures the safety of vehicles and pedestrians.

The invention discloses a positionable stainless steel tube inner wall polishing device. The device comprises a rack, a pair of parallel conveying tracks are arranged at one end of the top of the rack, a polishing machine is arranged on the conveying tracks, a first roller set and a second roller set fixed to the rack are sequentially arranged on one sides of the conveying tracks, one roller in the first roller set and one roller in the second roller set are connected through a connecting shaft, a rotating gear is arranged at one end of the connecting shaft, the rotating gear is connected witha driving gear through a driving chain, one end of the driving gear is connected with a driving motor fixed to the rack, and a pushing device is arranged on the outer side of the second roller set. The axial position of a stainless steel tube can be effectively adjusted, the positioning precision is high, and the safety is good.