34results about How to "Guaranteed deflection" patented technology

The invention provides a method for constructing a connection joint between a flat slab and a post cap in a reverse construction method, and relates to the technical field of concrete supporting components. The method aims to solve the problems that in the prior art, a flat slab and a post cap are poured and constructed successively, accordingly, shrinkage cracks are prone to being formed a connection joint, bearing capacity, rigidity and punching-resistant capacity of the flat slab are reduced, reverse construction operations are extremely inconvenient and operation efficiency is reduced. The method includes the following steps that firstly, an upper-layer steel bar and a lower-layer steel bare of the flat slab to be poured and an embedded steel bar, a horizontal hoop rib and radial inclined ribs of the post cap to be poured are distributed surrounding a reserved steel column; a formwork is erected, concrete is poured, the formwork is dismantled after the concrete is hardened, and the flat slab and the post cap, which are connected into a whole, are manufactured. Through the method, the flat slab and the post cap can be poured to form a whole and are connected more tightly, the punching-resistant requirement can be met and stress performance of the connection joint is improved.

The invention discloses a blade profile receiving hole structure for a prewhirl cooling system. Each blade profile receiving hole is an inclined hole deflecting in the rotating direction of a rotary disc, a blade profile receiving hole runner is of a gradual contraction structure so that the effect that airflow is gradually accelerated in the axial flowing process. A blade profile receiving hole deflected profile comprises a self-designed blade profile force suction surface and a self-designed blade profile pressure surface and is used for ensuring the effect that the flowing loss of the airflow is the smallest when the airflow deflects along the blade profile receiving hole deflected profile. Each blade profile receiving hole has a blade profile receiving hole air inlet angle and a blade profile receiving hole air outlet angle which are determined by the nozzle outlet airflow rotating ratio and the receiving hole outlet target rotating ratio. The radial height, extending in the axial direction, of the blade profile receiving holes is gradually decreased. The acceleration characteristic of the blade profile receiving holes is ensured through blade profile receiving hole radial contraction curved surfaces on the two sides of the inlet section radial height and the outlet section radial height of the blade profile receiving holes. The flowing loss of the blade profile receiving holes and the flowing loss of air supply holes are decreased, so that the nozzle outlet rotating ratio is increased, the system temperature lowering seed is increased, and power consumption is reduced.

A power tool configured to drive a fastener into a workpiece, comprising a nose assembly having a front plate and a rear plate defining a passage for driving a blade, and The front plate is pivotally movable relative to the rear plate between an open position and a closed position, and in the closed position, the front plate and the rear plate are in contact with each other. The front panel is also pivotable relative to the rear panel to an intermediate deflected position between the open position and the closed position. A handle portion having an outer surface capable of defining at least one grip portion and an inner surface capable of defining at least one chamber. The handle part includes a base having at least one opening and a covering molding layer configured to form a gripping surface on the outer surface, while the covering molding layer extends into the chamber through the opening, Forms an elastic mounting point.

The invention relates to a device for transporting track sections or pre-mounted track connections on railborne platform wagons (1). A plurality of platform wagons (1) can be displaced in a coupled manner. A platform wagon (1) arranged between two other platform wagons comprises at least one carrier or support (5), said carrier or support being higher (4) than the smallest vertical distance between parts which are fixed or mounted on the carriers or supports (5) and project past the platform wagon (1) in the direction of the adjacent platform wagon, such as longitudinal rails (6), or the track section to be transported, and the platform (4) or loading surface of the adjacent platform wagon.

The invention relates to a lint cotton opening device. The lint cotton opening device comprises an opening roller, an upper opening shell, a lower opening shell, a lint cotton throwing curve, a variable-frequency motor, a frequency converter, a spiked nail conveying belt and a transverse adjustable bearing seat. The upper opening shell and the lower opening shell are connected together via a sealing gasket to form an opening shell. The lint cotton throwing curve is mounted on the outlet side of the opening shell. The opening roll shaped in a cylinder is positioned at the inner center of the opening shell and portioned into an outer layer and an inner layer. The spiked nail conveying belt is capable of cooperating with a lint cotton scraping and evening plate to hook and pull lint cotton so as to preopen the lint cotton while conveying the to-be-checked lint cotton. The lint cotton opening device has the advantages that cotton bales can be fully opened via striking of spiked round-headed nails and rubbing of a bottom-shell fence structure, damage to cotton fibers is small, and foreign fiber trait is kept well.

The invention relates to a shuffling device and transferring method for turnout switch rails and stock rail assemblies on a bridge. The shuffling device consists of a rolling structure and a moving platform, wherein the rolling structure is formed by a plurality of square timbers and two roller assembly bodies placed on each square timber, and the moving platform is formed by separately placing a sliding steel girder on two rows of roller assembly bodies. The moving platform can make parallel movement on rollers of the roller assembly bodies through outside thrust. The turnout switch rails and the stock rail assemblies are placed on the moving platform, and can be transferred to a construction position from an unloading position on the bridge. According to the shuffling device and transferring method for the turnout switch rails and the stock rail assemblies on the bridge, disclosed by the invention, the problem that the switch rails and the stock rail assemblies cannot be transferred in place smoothly under the condition of no makeshift roads during bridge construction is solved. The shuffling device for the turnout switch rails and the stock rail assemblies on the bridge is used, so that the construction cost is reduced, and the construction efficiency is improved. The method disclosed by the invention is utilized, so that the construction is safe and reliable, and the condition that the deflection of the switch rails and the deflection of the stock rail assemblies cannot go beyond a design allowed range is guaranteed.

The invention relates to the field of split case pumps, in particular to a single-stage double-suction split case pump with the good sealing performance. The single-stage double-suction split case pump comprises a front bearing seat, a rear bearing seat and a pump shaft penetrating the front bearing seat and the rear bearing seat. The pump shaft is sleeved with a shaft sleeve. The middle portion of the pump shaft is sleeved with an impeller and a pump body matched with the impeller. The pump body is connected with the front bearing seat and the rear bearing seat through fastening pieces. A sealing component is arranged between the pump body and the impeller. Pump covers are arranged on the two sides of the pump body. The pump covers on the two sides are matched with a padding sealing device and a mechanical sealing device correspondingly. The invention aims at providing the single-stage double-suction split case pump with the good sealing performance, through the specific padding sealing device and the impeller sealing component, the good sealing effect is achieved, meanwhile the bearing span can be lowered, an impeller sealing ring is prevented from falling off, and normal operation of the pump is guaranteed.

The invention relates to the technical field of unconventional oil and gas resource development, and discloses a fixed-area controllable staggered oriented perforating horizontal well hydraulic fracturing physical simulation method. The fixed-area controllable staggered oriented perforating horizontal well hydraulic fracturing physical simulation method comprises the steps that S1, a simulation shaft is manufactured, the simulation shaft is provided with a plurality of perforating hole sets, each set corresponds to a liquid injection pipe, and the simulation shaft comprises a plurality of perforating holes, and perforating hole channels are manufactured and are inserted into the perforating holes; S2, the shaft is put into a mold, and pouring is carried out to obtain an artificial rock core test piece; S3, the artificial rock core test piece is put into a loading chamber; S4, a liquid injection pump is connected to the liquid injection pipe; S5, crustal stress is loaded in the X, Y andZ directions of the test piece, fracturing fluid is injected into the simulation shaft, data are synchronously acquired, and the crustal stress on the test piece is canceled; S6, the liquid injectionpump is connected to the next liquid injection pipe, then the step S5 is repeated till all the liquid injection pipes are injected with liquid, and then the step S7 is carried out; and S7, sectioningis carried out on the test piece, and a fluid migration channel in the test piece is observed to obtain a hydraulic fracturing crack propagation rule.

The invention discloses a print head module and a label printer. The print head module comprises a flat plate, a fixation frame and a spring sheet. A print head is arranged on the flat plate; and the spring sheet has a first end and a second end which are opposite, wherein the first end realizes fixation connection with the flat plate through combination and fixation of a first fixation portion and a second fixation portion, which are different in position and coplanar, of the first end with a first fixation member and a second fixation member of the flat plate; and the second end realizes fixed combination with the fixation frame through combination and fixation of a third fixation portion and a fourth fixation portion, which are different in position and coplanar, of the second end with a third fixation member and a fourth fixation member of the fixation frame, such that the two ends of the print head are equally stressed, the problems of wrinkling, paper jam and light-color printing due to unequal stress of the print head are prevented, and deflection is guaranteed.

The invention discloses sludge sampling equipment based on an unmanned aerial vehicle. The sludge sampling equipment comprises a mounting disc and a mounting cylinder fixedly connected to the top of the mounting disc, and a sampling device is fixedly connected to the bottom of the mounting disc; and a plurality of supporting devices are arranged at the bottom of the mounting disc close to the outer edge of the mounting disc. The supporting devices are mounted at the bottom of the mounting disc, buoyancy balls drive stop levers to move under the buoyancy of water, the stop levers cannot stop the supporting legs, when the supporting legs are located at bumpy positions, the supporting legs can deflect in the direction away from a main sharp cylinder, so that supporting range of the pluralityof supporting legs is enlarged, rollover can be prevented, the main sharp cylinder can be in contact with sludge, the sludge enters the main sharp cylinder through sampling holes, and a driving cylinder drives a pull rod to move towards the mounting disc, so that a suction effect is achieved in a vertical cylinder, the external sludge is sucked into the sharp cylinder, the sludge sampling efficiency is improved, the overall stability is guaranteed, and the sampling efficiency is improved.

The invention relates to a tooth chamfer tester of a tooth ring, and belongs to the technical field of tooth rings. The tester comprises a column arranged on a pedestal, the pedestal is supported by supporting legs, the pedestal is provided with a through hole for placing the tooth ring and at least three groups of spherical supporters, each group of spherical supporters supports the two side surfaces of a chamfer of the same tooth in the tooth ring, a positioning mandrel is further included, one end of the positioning mandrel is provided with a positioning cylinder matching the inner ring ofthe tooth ring, and the positioning mandrel and the positioning cylinder are arranged on the column in an up-down sliding way. Thus, detection time for the tooth chamber is shortened, the detection efficiency is improved, and the cost is reduced.

A device for the production of cable sensors that each have at least one sensor and a cable trimmed to a variably pre-definable length includes at least two processing units, and at least one conveying unit. The processing units are configured to load and cut a cable blank, and are further configured to sequentially convey the cable blank along a pre-defined motion track. At least one deflection unit is positioned between adjacent processing units. Each deflection unit includes at least one deflection element that is in contact with or is configured to contact the cable blank. A displacement unit is assigned to and is configured to modify a position of the deflection element in order to influence a length of the motion track of the cable blank so as to obtain variable lengths of cable.

The invention relates to a spring rod suspension type oscillation blending device, which solves the problems of non-uniform oscillation, large noise, poor blending effect and the like in the prior art, and adopts the technical scheme that a plurality of spring rods are arranged on a base, the lower ends of the spring rods are limited on the base, and the upper ends of the spring rods are matched with an oscillation disc; and the spring rod is used for enabling the oscillating disc to oscillate stably on an annular track. The device has the effects that the spring rod is additionally arranged on the base and is matched with the oscillating disc, so that the oscillating disc is stressed to oscillate uniformly under the action of the motor, the noise is reduced, and the uniform mixing effectis improved.

The invention relates to the field of electronic component processing. The invention discloses a pin shearing device with a rapid fixing function for electronic component processing and aims to solve the problem that the operation is troublesome when an electronic component is fixed through a clamp. When the device is used for cutting an electronic component, it is difficult to ensure that the exposed lengths of pins of the electronic component are equal, and it is difficult to ensure the quality of the cut electronic component. After the device cuts the pins of the electronic components, waste materials of the pins of the electronic components are inconvenient to collect. The pin shearing device is composed of a feeding mechanism and a cutting mechanism. For the pin shearing device with the rapid fixing function for electronic component processing, by putting the electronic component in the inner side of a frame, the electronic component is promoted to be clamped into a groove, then an air cylinder shrinks to drive a driven gear to rotate, then a one-way bearing is matched to promote a connecting rod to drive a cylinder to rotate clockwise, and the cylinder is promoted to drive the electronic component in the groove on the side surface to rotate clockwise.

The invention relates to a conveying bracket of a small-diameter steel pipe inner wall shot blasting machine. The conveying bracket comprises multiple groups of bearing monomers, wherein each group of bearing monomers comprises two outer bending plates in bilateral symmetry; the two outer bending plates are connected through multiple spaced reinforcing plates; adjacent two groups of bearing monomers are connected through two inner bending plates in bilateral symmetry; the outer end of the bearing monomer at the leftmost end is fixedly connected with a first connecting piece; the outer end of the bearing monomer at the rightmost end is fixedly connected with a second connecting piece; a third connecting piece is arranged on the bearing monomer at the leftmost end; multiple upper support roller racks in bilateral symmetry are mounted on the two sides of the upper part of each group of bearing monomers; multiple lower support roller racks in bilateral symmetry are mounted on the two sides of the lower part of each group of bearing monomers; and support rollers are arranged on the upper support roller racks and lower support roller racks. The conveying bracket provided by the invention is reasonable in structure design and convenient to use, improves the rigidity and deflection and meets the requirement for inner wall shot blasting of a small-diameter steel pipe.

The invention relates to the sealing field of split pumps, in particular to a filling and sealing structure of split pumps, which includes a shaft sleeve arranged on a shaft, a pump body is arranged on the shaft sleeve, and a There is a packing retainer docked with the outside of the pump body, the packing retainer is connected with a packing gland matching it, and a sealing cavity is formed between the packing gland and the packing retaining sleeve, and a packing ring is arranged in the sealing cavity and packing, the packing ring and the flushing hole provided on the stuffing retainer butt, the outer side of the packing retaining sleeve is provided with a water tank communicating with the flushing hole, and the water tank communicates with the flushing pipe; the purpose of the present invention is Provide a filling and sealing structure for split pumps, set a cylindrical packing retainer, and set a water tank connected to it on the outside of the packing retainer, and connect the water tank to the washing pipe to make the position of the sealing chamber closer The impeller is improved, the bearing span is reduced, and the deflection of the shaft is guaranteed to be in a safe range.