45results about How to "Guaranteed inclination" patented technology

The invention provides an AC double-wing-head machine head used for friction stir welding. The machine head and a lathe bed are connected by installing a slide sleeper and a Z-axis slide carriage through screws, slide blocks and the like. A C axis drive assembly and an A axis drive assembly are each composed of a motor, a speed reducer and the like. The C axis drive assembly and the A axis drive assembly are connected with a C worm and gear assembly and an A axis worm and gear assembly. The C worm and gear assembly and the A axis worm and gear assembly are connected with a C axis assembly and an A axis assembly respectively through screws. The C axis assembly and the A axis assembly pass the C axis drive assembly and the A axis drive assembly and rotate so that a friction stir welding main shaft can rotate in the C axis or the A axis, and the space posture of the friction stir welding main shaft is changed through linkage with all shafts of the lathe bed. Meanwhile, hydraulic locking assemblies are adopted for the A axis and the C axis, it is further ensured that the space posture of the friction stir welding main shaft is positioned and locked on the basis of the worm and gear self-locking function, and therefore a friction stir welding device can be changed at any inclination angle in the three-dimensional space.

The invention relates to an installation method for an oblique crossing steel pipe and grid column type outer frame barrel body structure, and belongs to the technical field of building steel structure construction. The installation method comprises the following operation steps that a supporting steel pipe is positioned on a base, and the welding and fixing process of the supporting steel pipe and the base is completed according to the installation inclination and span of a grid column; then the angle inclination of a sling is adjusted through a chain block to align the hoisting process of the grid column; then a pair of symmetrically distributed grid columns and the supporting steel pipes are temporarily fixed through a plurality of butt joint lug plates which are annularly distributed at equal intervals; then operation platforms are installed on the pair of grid columns, and then oblique crossing steel pipes are hoisted to be aligned with the upper ends of the grid columns; and after the oblique crossing steel pipe and grid column type outer frame barrel body structure forms a stable A-shaped structure system, welding work is carried out. The method has the advantages of high construction safety and reliability, simple construction method and short construction period. The inclination angles and the axis positions of the oblique crossing steel pipes and the grid columns areguaranteed, shaking is effectively reduced, and the hoisting accuracy is improved.

The invention discloses a quick escape combined stairway. The quick escape combined stairway comprises a common stairway and a helical escape slide. The helical escape slide is arranged between an upper stair section and a lower stair section of the common stairway. The helical escape slide is in clearance fit with the common stairway. The clearance is annular. The helix angle of each layer of thehelical escape slide is equal to the inclination angle of the common stairway. According to the quick escape combined stairway., the original gradient of the common stairway is maintained; the helical escape slide is arranged between the upper stair section and the lower stair section of the common stairway, and the helical escape slide is in clearance fit with the common stairway; in this way, no matter what disaster happens, people can get into the helical escape slide from the common stairway to quickly escape at any time; when escaping through the helical escape slide, the sliding speed of people on each layer is only about 4 s, the speed is high, and the safety is high.

The invention relates to a boring method of geology whose upper portion is a silt layer and lower portion is a moderately weathered and a slightly weathered silt strata, which relates to a construction method of pile foundation boring. The invention aims to solve the problems that prior geology whose upper portion is a silt layer and lower portion is a moderately weathered silt strata or a slightly weathered silt strata uses an electric impact drill to impact to form holes, the boring speed is slow, the efficiency is low, the construction is not done using an auger drill, mud which is used when auger construction is prepared by bentonite or clay, the manhole mud concentration is 1.15-1.25, the manhole mud viscosity is 18-24S, and the moderately weathered and the slightly weathered silt strata which are arranged on the lower portion of the pile foundation is punched by the electric impact drill. Compared with the electric impact drill is solely used to punch, the boring method has faster speed, the upper portion 40mm geology of a pile hole whose length is 50mm and diameter is 1.25m is a silt layer, the lower portion is the moderately weathered and the slightly weathered silt strata, and the boring time is only 4-5 days. Compared with the prior art, the cost of the pile hole is capable of being reduced by 50 percent.

The invention provides a device for closing a tooth-extraction gap of an upper jaw, and relates to the field of clinics of orthodontics. According to the device for closing the tooth-extraction gap of the upper jaw, extracted teeth are left-side and right-side first premolar teeth of the upper jaw. The device for closing the tooth-extraction gap of the upper jaw comprises a bracket, buccal tubes, an arch wire, first draw hooks and second draw hooks, wherein the bracket is used for connecting left-side and right-side second premolar teeth of the upper jaw and the first premolar teeth into a whole; the buccal tubes are attached to the buccal side surfaces of the left-side and right-side second premolar teeth of the upper jaw; the arch wire is used for connecting incisor teeth and canine teeth of the upper jaw into a whole; the first draw hooks are bonded with the labial side surfaces of left-side and right-side canine teeth of the upper jaw; the second draw hooks are bonded with the buccal side surfaces of the left-side and right-side first premolar teeth of the upper jaw; a tension spring is arranged between the first draw hook and the second draw hook on the same side; two ends of the arch wire are inserted into the buccal tubes respectively. The device provided by the invention is applicable to the carrying out of gap closure 3 days after the first premolar teeth of the upper jaw are extracted, is simple in structure, and can be used for closing the gap within a shorter time and shortening an orthodontic course of treatment.

The invention relates to the technical field of numerical control machining, and particularly relates to an alignment tool for machining for a part with a closed angle, and a machining method. The alignment tool comprises a locking element, as well as a spherical alignment element, a conical limiting element and a cylindrical locating element which are coaxially connected in sequence. By means ofthe alignment tool, the problem that the closed angle cannot be aligned is solved. According to the machining method for the part with the closed angle, the alignment tool is used, and when a to-be-machined hole of the part is machined, a three-axis numerical control machine tool can be used for accurate alignment, so that the production cost is greatly saved, the production efficiency is increased, and the product quality is guaranteed.

The invention relates to construction equipment for structures such as harbors and hydraulic engineering, and specifically relates to a deepwater environmental riprap leveling ship. The ship comprises a flat barge; the middle portion of the flat barge is provided with an opening; a rectangle frame is arranged below the opening; five side turnover boards are parallelly and rotatably arranged in the rectangle frame and along the extension direction of the long edge of the rectangle frame; and traction devices are arranged between the flat barge and the side turnover boards. The side turnover boards turn towards the short edge of the rectangle frame or keep horizontal through the traction devices. An elevating device is arranged between the rectangle frame and the flat barge. The rectangle frame moves up and down through the elevating device so as to drive the side turnover boards to move up and down. The beneficial effects of the deepwater environmental riprap leveling ship are that the ship is simple in structure, can shift rapidly, is adaptive to shallow and deep water areas, has little disturbance to underwater mud, is environment-friendly, is safe, and integrates riprapping and leveling.

The invention relates to a hydraulic cylinder, in particular for a clutch actuating device in a motor vehicle, comprising a housing which is arranged concentrically around a shaft and which has an annular pressure chamber in which at least two pistons (4, 5; 6, 7) are movably mounted, wherein the pistons are connected via a bearing ring (10; 14) to a release bearing (11; 15). In the case of a hydraulic cylinder which compensates wobbling movements, the bearing ring (10; 14) of the release bearing rests in tiltable fashion on the pistons (4, 5; 6, 7).

The invention discloses a side wall type plate discharging machine applied to a printed circuit board. The side wall type plate discharging machine applied to the printed circuit board comprises a loading mechanism, a grabbing mechanism, a feeding mechanism, a dust removal mechanism and an electric cabinet; the loading mechanism comprises an 'L'-shaped back plate rack; the back plate rack comprises a rear back plate and a lower supporting plate; the rear back plate is provided with a stopping structure for stopping materials and an insulating plate; the lower supporting plate comprises a plurality of stopping protrusions; the dust removal mechanism comprises first-stage dust blowing structures and second-stage dust adhering structures; each first-stage dust blowing structure comprises a hollow round tube and a first lifting structure; each second-stage dust adhering structure comprises at least two dust adhering rolls, a second lifting structure and hollow rotating shafts which are inserted in the dust adhering rolls; and one end of each hollow rotating shaft is provided with an air suction opening while the other end is provided with a reverse air blowing opening. The side wall type plate discharging machine applied to the printed circuit board can effectively remove foreign matters on the surfaces of plates and in miniature holes, and the integral quality of electronic products is improved; and furthermore, single adsorption of a vacuum sucker can further be realized, the plate discharging machine continuously discharges plates on rollers favorably, and mounting smoothness of a downstream station is ensured.

The invention provides a mounting method of an inclined supporting steel column. The method comprises the following steps of: obtaining accurate coordinates of a component in-place key point by utilizing a modern information technology; hoisting an inclined steel pipe column by utilizing a machine and roughly adjusting to a designed position through a chain block; carrying out in-place mounting on a temporary connection bolt by a rotary machine; finishing correction of the steel column through a fine adjustment measure under three-dimensional space coordinate observation of a high-precision instrument; and connecting a subsequent structure in time to form a stable system. The problems that a traditional steel structure hoisting construction method is difficult to correct and the construction period is prolonged when the inclined steel column is hoisted, and relatively great hidden dangers exist in the construction safety are solved. The mounting method belongs to the technical field of construction of building steel structures.

The invention discloses a feeding improved type injection mold. By means of sealing films disposed on the inner wall of a sprue bush, it is avoided that a nozzle of an injection molding machine takesout a molten raw material when being pulled out, and it can also be avoided that impurities enter a chamber of the mold. The feeding improved type injection mold of the technical scheme is characterized by comprising a pouring system, a forming system and a base, the pouring system comprises a sprue and a runner, the sprue bush is disposed at the upper end of the sprue, at least one sealing film is disposed on the inner wall of the sprue bush, the outer ends of the sealing films and the inner wall of the sprue bush are integrated, and the sealing films are made of a material with ductility andresilience. By means of the feeding improved type injection mold, it can be avoided by the sealing films disposed on the inner wall of the sprue bush that the nozzle of the injection molding machinetakes out molten plastic or rubber when being pulled out, the sprue or an external environment is prevented from being contaminated, it can also be avoided that impurities enter the chamber of the mold, and the precision and purity of injection molding products are ensured.

The invention relates to a tenon tongue cutting device for processing a tenon joint. The tenon tongue cutting device comprises a bottom plate, wherein a support frame is arranged on the right upper side of the bottom plate; a motor is fixedly installed at the upper end of the support frame; a driving bevel gear sleeves a shaft of the motor in a matching manner; an arch-shaped frame is fixed to the left end surface of the support frame; a rotary shaft vertically penetrates through the arch-shaped frame and is separated from the arch-shaped frame by a bearing; a driven bevel gear which is meshed with the driving bevel gear is fixed at the middle part of the rotary shaft; the upper and lower end parts of the arch-shaped frame are both connected with an inclined fixing plate in a hinging manner; and a transmission shaft with a rotary axial line perpendicular to the corresponding inclined fixing plate is installed in the corresponding inclined fixing plate. Compared with the traditional processing mode, with adoption of a sawing disc sawing mode, the tenon tongue cutting device is beneficial to ensuring an inclination of a tenon tongue so as to effectively improve the processing accuracy and also keeps wastes with large size so as to prevent large-area environmental pollution and alleviate the treating difficulty of the wastes.

The invention particularly relates to a construction method and a construction device for controlling the flatness of a cast-in-place reinforced concrete slope surface of a discharging platform. The construction method comprises the following steps: 1) slope structural formwork erection; 2) setting of a downward scraping rod guide rails; 3) concrete pouring, vibrating and flattening; 4) scraping; 5) removal of scraping rod guide; 6) concrete grouting and polishing; 7) water conservation of concrete covered with membrane. The construction device comprises a slope structure frame and the device is characterized in that a plurality of scarping rod guide rails are distributed on the slope surface of the slope structure frame at intervals, each of the scarping rod guide rails extends from the top to the bottom of the slope; the bottom of each scraping rod guide rail is provided with a plurality of guide rails supports; the upper ends of the guide rail supports are connected with the bottoms of the scraping rod guide rails and the lower ends thereof are fixed on the support frame of the slope structure. The construction method and the construction device for controlling flatness of cast-in-place reinforced concrete slope surface of the discharging platform have the advantages of bringing convenience to construction and achieving good construction effect.

The invention relates to a speed reduction device. The device comprises a base, a first slope, a first groove and a second slope are sequentially arranged on the base from one end to the other end. The two slopes are inclined towards the first groove; a first spring is arranged in the first groove; a first sliding block capable of moving in the first groove is supported on the first spring, a second groove is further formed in the base and located between the first groove and the second slope, a second spring is arranged in the second groove, and a second sliding block capable of moving in thesecond groove is supported on the second spring. The second sliding block capable of moving up and down is additionally arranged in the speed reducing device, so that the second sliding block moves downwards to form a height difference with the first sliding block to prevent the vehicle from running reversely when the vehicle is reversed.

The invention discloses a reading board structure capable of relieving eye fatigue. The reading board structure comprises a table top and a supporting part, and further comprises a base plate, wherein a hinge part is arranged at the front end of the base plate and a hinge part is arranged at the rear end of the base plate, and the various hinge parts are respectively hinged with and connected to any one side of the table top and any one side of the supporting part; a hinge rod is additionally arranged on the table top; an accommodating groove is additionally arranged on the table top; strip-shaped ribs and a spine slot are additionally arranged on the table top; and a gap is kept between the adjacent strip-shaped ribs. The reading board structure disclosed by the invention, which can offer an appropriate reading angle conveniently, is conducive to visual protection for a user; and the reading angle is convenient to keep; the reading rack, under the circumstance that the table top is relatively small in volume, can better adapt to the lengths and the widths of existing books; and meanwhile, the structure is convenient to carry.

The invention discloses a joint rehabilitation training device. The device comprises a base and a supporting frame and a lower limb training mechanism which are installed on the base; and the lower limb training mechanism is a first swing guide rod mechanism or a first crank swing block mechanism composed of a first supporting component, a first rotating shaft, a first supporting auxiliary tool, a first crank, a first rod piece and a first sliding piece. According to the joint rehabilitation training device, the local freedom degree can be eliminated, so that abnormal reaction of the joints can be restrained, ankle joints or wrist joints on the two sides can generate a certain movement angle, ankle pump movement is formed, and the device has good ankle joint or wrist joint training effects.