41results about How to "Reduce impact resistance" patented technology

The method provided by the invention comprises the following steps: a machine body, a walking part, a lifting part, a reciprocating pounding part and the like are arranged; a pounding guide element and the like are arranged on a pounding guide device; pounding heads are arranged at two ends of the pounding guide element, so that a power pounding element drives the pounding guide element; the reciprocating pounding part is arranged on the lifting part; the lifting part is arranged on the machine body; and the walking part drives the machine body to move ahead and retreats so as not to turn the machine body to excavate and drop materials forward and backward. Equipment provided by the invention comprises the machine body, the walking part, the lifting part, the reciprocating pounding part and the like; the reciprocating pounding part comprises the pounding guide device, the pounding driving device and the like; the pounding heads are both arranged at two ends of the pounding guide element; the pounding driving device comprises the power pounding element and the like; the power pounding element drives the pounding guide element to move in a reciprocating mode; the pounding guide element drives the pounding heads to pound; the reciprocating pounding part is arranged on the lifting part; the lifting part is arranged on the machine body; the walking part drives the machine body to move ahead and retreat so as not to turn the machine body to excavate and drop materials forward and backward.

A method and device for converting rotary motion to reciprocating percussion motion. The device comprises a machine body (4), a travel portion (7), and a reciprocating percussion portion (5). The reciprocating percussion portion (5) comprises a percussion drive mechanism (2), a rocker arm (6), and a percussion head (1). The percussion drive mechanism (2) comprises a percussion power source member (11), a transmission component, and a crankshaft (10). The percussion power source member (11) comprises a motor, and the motor comprises a power output shaft (14). The transmission component comprises a power gear (13) and a transmission gear (12). The power gear (13) is mounted on the power output shaft (14). The transmission gear (12) drives the crankshaft (10). The transmission component comprises a transmission shaft. The power output shaft (14) is perpendicular to the rocker arm (6), and is parallel to the transmission shaft and the crankshaft (10) so that the transmission gear (12) drives the crankshaft (10) to convert rotary motion to reciprocating motion; or the power output shaft (14) is parallel to the rocker arm (6), the crankshaft (10) is driven to convert rotary motion to reciprocating motion after the power direction is changed by a power bevel gear and a transmission bevel gear. The crankshaft (10) drives the percussion head (1) to perform reciprocating percussion. The travel portion (7) drives the machine body to travel. The machine body (4) drives the reciprocating percussion portion (5) to move and work continuously. The device applies to the mining field or mechanical engineering field, and has advantages such as strong structural strength and a small amount of maintenance.

A laminate excellent in terms of surface hardness, impact resistance, punchability, and yellowing deterioration resistance and suitable for use as display covers and building materials is provided. A laminate characterized by laminating a layer of a polycarbonate resin which contains a structural unit derived from a dihydroxy compound having, as part of the structure thereof, a site represented by the following formula (1) (layer A) to a layer of an aromatic polycarbonate resin (layer B).[Chem. 1]CH2—O   (1)(The case where the site represented by the above formula (1) is part of —CH2—O—H is omitted.)

The invention specifically relates to a method for retaining vertical impact of an impacting mechanism and a vertical-lift impact-cutting digger implementing the method, belonging to the field of machinery, especially to the field of mining. The digger comprises a body, the impacting mechanism and a vertical lift mechanism, wherein the impacting mechanism comprises a guiding member and an impacting head, the vertical lift mechanism comprises a vertical lift driving unit, a lifting and moving part, a supporting seat and the like, the lifting and moving part is movably connected with the supporting seat, the supporting seat is connected with the body, the impacting mechanism is arranged on the lifting and moving part, the vertical lift driving unit drives the lifting and moving part to vertically move up and down, and the lifting and moving part drives the impacting mechanism to vertically rise and fall. The digger provided by the invention has the advantages of a long service life, a small amount of maintenance, high work efficiency, shortened body length and applicability to a complex usage occasion.

Since, as a rule, there are several such PSTs on an aircraft, this results in a marked reduction in weight and aerodynamic drag, and savings in the required electric power in conjunction with a simultaneous increase in the accuracy of measurement of the angle of attack. All this permits a substantial increase in the competitiveness of the proposed fuselage Pitot-static tube.

The invention belongs to the field of machinery, is especially suitable for the field of excavating, and specifically relates to a step-tooth excavating method of reciprocating impact excavators, and a step-tooth reciprocating impact excavator used for realizing the step-tooth excavating method. The step-tooth reciprocating impact excavator comprises a machine body, a travelling mechanism, an impact blanking mechanism and the like; the impact blanking mechanism is arranged on the machine body; and the travelling mechanism is arranged on the lower part of the machine body. The impact blanking mechanism comprises a step-tooth impact-cutting device, an impact power box, a power impact part, an impact guiding element and the like; step teeth are formed by adjacent impact teeth arranged on the step-tooth impact-cutting device. The step-tooth impact-cutting device is driven by the power impact part, material to be excavated is impacted to be step shaped so as to obtain two or more opposite free faces, and pressure stress and / or structural strength relative to original material is reduced greatly. When the impact teeth is used for excavating for another time, the two or the more opposite free faces are used for reducing impact resistance greatly; generation of oversized material blocks, which fall because of excavating, is avoided; impaction efficiency is increased, and equipment depreciation is reduced.

The invention discloses a damper damping mechanism and a hydraulic-pneumatic combined damping damper applied same, and belongs to the field of dampers. The damper damping mechanism is characterized inthat in a downward pressing moment, part of the damping medium flows from a small hole to a large hole to generate downward-pressure damping, the part of the damping medium flows through a gap between a damping piston and a handle pipe, the part of the damping medium flows into the large hole through a sawtooth notch through a groove of the outer side wall of a piston ring, and the problem that the shock feeling is generated instantly when the damper is pressed down is effectively solved; and in the rebound process, a piston seal ring expands outwards to seal the gap between the damping piston and the handle pipe, the rebound damping effect is improved, especially in a road condition continuous bumpy environment, the motion stroke of the damper is long, in addition, the reciprocating motion of higher frequency is needed, and the damping effect is more prominent. According to the damper damping mechanism and the hydraulic-pneumatic combined damping damper applied the same, a sealing air pressure cavity is formed by guiding and sealing between a handle pipe and a sleeve pipe, so that the lower pressure collision bottom of the damper is prevented, and the hydraulic-pneumatic combineddamping effect is achieved.

The invention relates to the field of diggers and especially relates to a jack anti-rotating easily-detachable reciprocating impact head specifically for a reciprocating impact digger. The jack anti-rotating easily-detachable reciprocating impact head comprises a reciprocating impact head device. The reciprocating impact head device comprises a reciprocating impact head. The reciprocating impact head comprises a reciprocating impact tooth, a permanent seat and a clamp spring or an elastic pin or a lock pin. The reciprocating impact tooth comprises an impact tooth and an impact tooth shoulder. The impact tooth is arranged on an impact tooth insertion column or an impact tooth jack member. The impact tooth shoulder is arranged at a lower part of the impact tooth or is arranged at the end of the impact tooth jack member. The reciprocating impact tooth and the permanent seat comprise hole-slots for arrangement of the clamp spring or the elastic pin or the lock pin. The clamp spring or the elastic pin or the lock pin is arranged in the hole-slots and goes through and connects the reciprocating impact tooth and the permanent seat. The clamp spring or the elastic pin or the lock pin bears a backward pull force produced by reciprocating impact motion. The impact tooth insertion column is inserted into a tooth base jack member or a tooth base insertion column is inserted into the impact tooth jack member. The impact tooth shoulder is tightly fastened to a tooth base shoulder so that a reciprocating impact counter-acting force can be born. A jack anti-rotating structure is fastened to a column anti-rotating structure so that reciprocating impact tooth rotation is prevented.

The invention belongs to the machinery field and especially relates to a punch-cutting mining method suitable for the mining field and a punch-cutting mining machine implementing the method. According to the method, a machine body, a walking part, a reciprocating impact part and the like are arranged; a lifting device is arranged or not arranged on the machine body; a dynamic impacting member is disposed on an impact driving device; a guiding device is provided with an impact guiding element; two ends of the impact guiding element are both equipped with an impactor or one end is provided with an impactor and the other end is provided with a counterweight; and the machine body supports the impactor to shock dropping materials back and forth. The equipment comprises the machine body, the walking part, the reciprocating impact part and the like. The reciprocating impact part comprises the dynamic impacting member, the impact driving device, the impactor and the like. The impact driving device comprises the dynamic impacting member. The guiding device comprises the impact guiding element; the dynamic impacting member drives the impactor to shock the coal wall or rock faces for blanking materials; the lifting device is arranged or not arranged on the machine body; the walking part is disposed on the lower part of the machine body and drives the machine body to walk so as to blank materials during walking and walk back to blank materials without turning the machine body.

A high-efficiency mining machine for percussing falling-materials without trapping materials. A machine body of the mining machine is provided with a falling-material percussion mechanism (3). The falling-material percussion mechanism (3) comprises an outer-layer-material percussion mechanism (4) and an inner-layer-material percussion mechanism (5). The outer-layer-material percussion mechanism (4) comprises outer-layer-material percussion teeth (4.1). The outer-layer-material percussion teeth are disposed so that materials percussed down by the inner-layer-material percussion mechanism flow out through gaps between the outer-layer-material percussion teeth and / or a discharge hole (8) is reserved in the outer-layer-material percussion mechanism so that materials percussed down by the inner-layer-material percussion mechanism flow out through the discharge hole (8) of the outer-layer-material percussion mechanism. The inner-layer-material percussion mechanism comprises inner-layer-material percussion teeth (5.1). The inner-layer-material percussion mechanism and the outer-layer-material percussion mechanism work with each other to implement percussion and discharge of falling-materials. Also disclosed is a high-efficiency mining method for percussing falling-materials without trapping materials. The mining machine has a simple structure and works in a reliable way.

The invention relates to special paint for an evaporative pattern aluminum alloy and a manufacturing method of the special paint. The special paint comprises the following components: 40-70% of aluminosilicate, 5-25% of mica powder, 5-20% of talcum powder, 0.1-0.3% of industrial salt, 1.5-3% of emulsion powder, 1-1.5% of artificial starch, 1.5-3% of argil, 0.3-0.8% of hydroxyethyl cellulose, 1-2% of attapulgite, 0.2-0.8% of sodium carbonate, 0.2-0.5% of sodium benzoate and water with the weight accounting for 40-50% of the total weight of the other components. The paint is good in suspension property, and does not settle; and the thickness of a single coated coating is between 0.4mm and 0.5mm. The paint can maintain good air permeability, has higher liquid penetrating capacity, is remarkable in thermal insulation effect, and does not crack easily due to a high solid-to-solution ratio. A coating of a cast complicated thin-wall aluminum alloy casting is easy to clear.

A vinyl chloride resin composition having excellent weatherability and impact resistance which comprises (a) a vinyl chloride resin, (b) a graft copolymer which is obtained by graft-polymerizing (b2) a graft monomer component composed of 40 to 100% by weight of methyl methacrylate and 0 to 60% by weight of at least one monomer selected from the group consisting of an alkyl acrylate, an alkyl methacrylate, an unsaturated nitrile and an aromatic vinyl compound onto (b1) a crosslinked elastomeric polymer composed mainly of an alkyl acrylate, the methyl ethyl ketone-soluble portion of the graft copolymer having an ηsp / c of 1 to 5 measured at 30° C. with respect to its 0.2 g / 100 cc acetone solution, and (c) calcium carbonate; and molded articles having a multilayer structure wherein a layer molded from the above composition is used as the surface layer or the inner layer.

The invention provides a pulping device based on multi-zone reciprocating turnover turbulent-flow impact-type pulping. The pulping device mainly comprises a reciprocating drive device consisting of aspindle, an upper gear cover and a lower gear cover, a turnover impact device consisting of a bevel gear, a rotary shaft and turbulent-flow plates, a rotary turbulent-flow device consisting of a rotorand blade plates, and a material pulp generating device consisting of a material cylinder and a pulp outlet. The pulping device is characterized by achieving multi-zone reciprocating turnover turbulent-flow impact-type pulping. Reciprocating turnover motions of the turbulent-flow plates are achieved through the upper gear cover and the lower gear cover in the reciprocating drive device, turnoverturbulent-flow impact-type crushing of multi-zone broken materials is achieved through four turbulent-flow plates vertically arranged in a staggered mode in the turnover impact device, rotary turbulent-flow crushing of the multi-zone broken materials at the bottom of a material cylinder is achieved and impact crushing of the turbulent-flow plates is assisted through the blade plates in the rotaryturbulent-flow device.

The invention discloses a diamond saw blade and a preparation process thereof, and belongs to the technical field of diamond machining tools and welding. The diamond saw blade comprises a saw blade base body and diamond tool bits, wherein a gap is formed between every two adjacent diamond tool bits, and a notch is formed between every two adjacent diamond tool bits; and the notches extend into theplane of the base body to form a plurality of chip grooves used for discharging cutting waste. Meanwhile, the holding force between a matrix material and diamond particles is improved by optimizing the composition of raw material powder of the tool bits and the preparation process, and the binding force between the tool bits and the base body is improved by optimizing the laser welding process, so that the operation safety coefficient is improved. According to the diamond saw blade, the energy consumption can be reduced, and the cost can be saved.

The present relates to a centrifugal impeller. According to the invention, the centrifugal impeller includes: a base plate 11 that has a rotating shaft bracket at the center portion where a rotary shaft is fitted, and of which the surface radially formed from the rotary shaft socket is sloped downward in a straight line or at a predetermined radius of curvature to maintain an obtuse angle with respect to the rotary shaft; a plurality of blades 13 that is circumferentially arranged on the upper surface of the base plate 11; and a scroll casing 15 that is disposed on the fronts of the blades 13, has a suction hole 15′ at the center portion to suck fluid, and forms an enlarged channel 17 through which the fluid flows, between the base plate 11 and the scroll casing 15 by being sloped downward from the suction hole 15′ toward the radial end. According to the present invention, the base plate 11 of the centrifugal impeller 10 is sloped within a range of 0° to 17° of the slope angle, such that high-speed jet fluid pushed in the centrifugal direction by rotation of the rotary shaft can smoothly flow through the enlarged channel 17 between the base plate 11 and the scroll casing 15.

The invention discloses a low-noise range hood, which comprises a volute, wherein an impeller is arranged inside the volute, a first annular air duct is arranged at the bottom of the volute, and a second annular air duct is arranged above the first annular air duct; a plurality of first partition plates are arranged in the first annular air duct, a spheroidal air bag is movably connected between the two adjacent first partition plates, a plurality of first through holes are evenly formed in the first partition plates, a second partition plate is arranged at the air inlet of the first annular air duct, a plurality of second through holes are evenly formed in the second partition plate, and a first air deflector is obliquely arranged between the second partition plate and the first partition plate adjacent to the second partition plate; a third partition plate is arranged at the air inlet of the second annular air duct, a third through hole is formed in the third partition plate and is communicated with an air inlet end of a cavity, and an air outlet end of the cavity is communicated with the second annular air duct. According to the low-noise range hood, the deficiencies of the prior art can be improved, and the efficient noise reduction at different air volumes can be realized.

The invention discloses a river ecological management floating bed which comprises a hollow annular floating bed and an aeration device. The floating bed comprises an outer ring body and an inner ring body. The outer ring body is provided with a plurality of positioning holes for placing flowerpots, the positioning holes penetrate through the upper surface and the lower surface of the outer ring body, and the positioning holes are evenly distributed in the circumferential direction of the floating bed. Positioning frames and flowerpots are arranged in the positioning holes. Each positioning frame comprises a tray at the bottom and a connecting wall extending upwards from the tray, and the upper end of each connecting wall protrudes outwards in the circumferential direction to form a positioning protruding ring. The flowerpots are placed on the positioning frames. Through holes are formed in the trays and the connecting walls. The lower ends of a plurality of cotton threads are arranged in a water body, and the upper ends of the cotton threads penetrate through the through holes and are tied with the flowerpots to form tying heads. The floating bed is stable in overall structure, the water body is repaired through the filter material matrix and various plants, and the water body repairing effect is good.

The invention discloses a pull blade for orthopedic surgery. The pull blade for the orthopedic surgery comprises a spiral blade section and a cylinder hammering section, wherein the spiral blade section and the cylinder hammering section are of an integrated structure. The pull blade for the orthopedic surgery is characterized in that a helical angle of the spiral blade section is 25 degrees, a blade edge is arranged on the head of the spiral blade section, a relief angle of the blade edge is 22 degrees, and at least three axial guide grooves are evenly formed in the cylinder hammering section in the circumferential direction. According to the pull blade for the orthopedic surgery, due to the fact that the axial guide grooves are formed in the cylinder hammering section in the circumferential direction, certain impact resistance can be reduced by means of the function of the axial guide grooves when the blade is hammered, the blade can faster pass through the neck of the femur to reach the head of the femur conveniently, shock of the peripheral nerves of wounded bones and drifting of the blood vessels and fragment bones can be prevented, wound healing can be accelerated, and the pain of patients can be relieved.

The present invention relates to the field of machinery and provides an impact head strengthening and centralizing method by using dual back recesses and an impact head strengthening and centralizing device by using dual back recesses for applying the method, and the method and the device are particularly applicable to the fields of mining or engineering machinery. The device comprises a dual back recess guidance mechanism, an impact support mechanism, a drive mechanism and impact heads, etc. The dual back recess guidance mechanism comprises a rolling friction dual back recess structure and impact guidance elements, etc. The rolling friction dual back recess structure comprises an upper rolling friction grove and a lower rolling friction groove. A power impact element drives the impact guidance elements to reciprocate. The impact guidance elements are disposed within the space of an external guidance roller. The impact guidance elements increase the centralizing height of the impact heads, and are in rolling friction with the reciprocating movement direction of the dual back recess structure and centralizing tooth holders of the impact guidance elements.

The invention relates to a diamond thin-wall drilling tool bit and belongs to the technical field of drilling tools. The diamond thin-wall drilling tool bit is formed by cold pressing and sintering hard particles and a metal binder, and the hard particles comprise diamond. The tool bit is arc-shaped in the length direction, and the bottom surface of the tool bit is a plane. The tool bit comprisesa middle tooth section and side tooth sections positioned on two sides of the middle tooth section, and connecting sections are arranged between the side tooth sections and the middle tooth section. Lip surfaces of the middle tooth section and the side tooth sections are formed by at least two continuous semicircular teeth, the upper parts of the connecting sections are provided with U-shaped grooves, and a plurality of shallow grooves are formed in the inner and outer side surfaces of the side tooth sections, the connecting sections and the middle tooth section of the tool bit in the length direction at intervals. According to the diamond thin-wall drilling tool bit, water does not need to be added for cooling in the drilling process, the heat dissipation and chip discharging performanceis good, the sharpness is high, the impact resistance of a perforating drill is lower, teeth falling are unlikely to occurring, the operation safety is good, and the working efficiency is greatly improved.

The invention discloses a bionic blade structure for stirring non-Newtonian fluid, which comprises a working surface of a blade body, a back pressure surface, an outer edge, a smooth joint of a blade tail part, a paddle shaft attached to the blade, a blade working surface raised hemisphere structure and a blade tail end wing structure. The non-smooth hemispherical structure of the working face of the blade can effectively reduce the impact resistance of high-viscosity fluid to the surface of the blade, meanwhile, large vortexes generated by incoming flow are cut and guided into countless small vortexes, liquid is fully stirred and separated, the wing structure at the tail end of the blade can reduce the incoming flow resistance, and the blade is more stable. And the wake flow flowing state is effectively improved and guided. After the bionic stirring blade is repeatedly tested and demonstrated through Fluent software, for example, the stirring liquid is a CMC solution with the concentration of 0.85%, the rotating speed of the stirring paddle is 150 rpm, compared with a smooth blade profile without a bionic structure, the average speed of the stirring fluid is increased by 0.005 m / s, the torque is reduced by 0.02 N.m, the stirring effect is improved, and the novel concept of developing the green and environment-friendly industry is met.

The invention discloses a water level monitoring device for the water conservancy projects. The water level monitoring device comprises a water level scale rod; the bottom of the water level scale rod is rotationally connected with a supporting bottom plate, the bottom surface of the supporting bottom plate is fixedly connected with a stabilizing needle rod, and warning mechanisms are evenly arranged at the positions, close to the top end, of the front face of the water level scale rod; a limiting sliding block is slidably connected to the vertical position of the front face of the exterior of the water level scale rod, a knocking driving mechanism is fixedly connected to one end of the front face of the limiting sliding block, a floating carrier plate is fixedly connected to the middle of the front face of the exterior of the knocking driving mechanism, and a limiting swing rod is rotatably connected to the outer side of the limiting sliding block; and the end, away from the limiting sliding block, of the limiting swing rod is rotationally connected with a walking roller. The invention relates to the technical field of water conservancy projects. According to the water level monitoring device for the water conservancy projects, the automatic stable supporting effect is achieved according to water level adjustment, and the stability of the left side and the right side of the monitoring device is improved.

The invention discloses an energy self-supply device for collection and purification of pelagic seawater. The device comprises a water storage traveling mechanism, a pressure-resistant solar power generation driving mechanism, a water quality intelligent detection filtering mechanism, two six-mouth water-pumping mechanisms and two arc-shaped protection mechanisms, wherein the water storage traveling mechanism comprises an electric energy storage block, a seawater storage tank, an underwater propeller and four clamping claw assemblies, the pressure-resistant solar power generation driving mechanism comprises a plurality of solar cell panels, a cell panel steering assembly and an electric power output component, and the water quality intelligent detection filtering mechanism includes a waterquality detecting mechanism and two water quality composite double-layer filtering mechanisms; and each water quality composite double-layer filtering mechanism includes an AI intelligent engine component, a first-stage rotator, a first-stage water quality filter net, a second-stage rotator and a second-stage water quality filter net. Not only can automatic collection and purification of the seawater be achieved, but also the water quality of a sea area can be evaluated and determined, so that effective first-hand data for marine protection and detection is provided.

The invention provides a fish collection station for migratory fish in rivers, which improves the fish collection efficiency of migratory fish in rivers and solves the problem of migratory fish crossing dams in high dam projects in alpine and canyon areas. The fish-collecting station is composed of an induced net wall, a fish-collecting platform, and a transport channel, and the constriction port at the upstream end of the net wall is connected with the fish-collecting box of the fish-collecting platform. The fish collection platform is divided into a fish collection layer and a fish unloading layer. The fish collection box is located below the water surface; the fish collection box is divided into upper and lower parts. There is water at the bottom of the fish collection box during lifting and transshipment, which provides conditions for the normal survival of fish. The fish unloading layer is built above the water surface of the fish unloading platform, and the fish collecting box is lifted, lowered, replaced, and unloaded through the hoist installed above the fish unloading platform. The fish collecting box is unloaded and sorted in the fish unloading layer. The fish unloading platform is connected with the transportation channel to realize the transfer of target fish across the dam.

The invention relates to a head wheel mechanism for a chain conveyor of an automated conveyor line. The chain conveyor comprises a conveyor body and a chain arranged on the conveyor body. The head wheel mechanism comprises a head wheel and a support, the support is arranged on the conveyor body, the head wheel is connected to the support and the conveyor body, and the chain is connected to the head wheel and moves around the same. The head wheel mechanism for the chain conveyor of the automated conveyor line has the advantages that noise is low, durability and safety are high, assembling is facilitated and the like.

The invention relates to the field of mining machine, and particularly relates to a method for arranging main and side reciprocating teeth on insertion holes of a linking guiding and sealing tooth insertion base, and an impacting device with mining machine insertion holes with main and side reciprocating teeth. The method and the device are achieved by a following technical scheme: the device comprises an integrated block sealing guiding and rotation-stopping box, a reciprocating power device, a linking guiding and sealing tooth insertion base, main reciprocating teeth and side reciprocating teeth, end portions of the linking guiding and sealing tooth insertion base are provided with guiding insertion posts or guiding insertion hole bases, the side reciprocating teeth are arranged on the main reciprocating teeth, the main reciprocating teeth are provided with main reciprocating tooth insertion hole pieces or main reciprocating tooth insertion posts, the reciprocating power device is connected to the linking guiding and sealing tooth insertion base, the guiding insertion posts (6) of the end portions of the linking guiding and sealing tooth insertion base are connected to the main reciprocating tooth insertion hole pieces. or the guiding insertion hole bases of the of the end portions of the linking guiding and sealing tooth insertion base are connected to the main reciprocating tooth insertion posts, and the linking guiding and sealing tooth insertion base drives the main reciprocating teeth and the side reciprocating teeth to impact in a reciprocating manner. The device improves the operational performance and the efficiency of a coal mining machine and a boring machine, and is safe and reliable.