34results about How to "Not affected by external forces" patented technology

The present invention discloses one kind of air cylinder or oil cylinder with self-locking device. The air cylinder or oil cylinder includes one cylinder body, one piston rod inside the cylinder body, one cylinder cap, one piston fixed to one end of the piston rod, one lock connected to the end of the piston rod stretched beyond the cylinder cap, and one clamping slot in the outer edge of the cylinder cap. The air cylinder or oil cylinder has self-locking device in simple structure and good self-locking effect, and may be operated only in the presence of driving force caused by air or oil pressure, reaching no malfunction.

The invention discloses a novel box type transformer station. The novel box type transformer station at least comprises a high-voltage switch chamber, a low-voltage switch chamber and a transformer chamber, wherein the high-voltage switch chamber, the low-voltage switch chamber and the transformer chamber are in echelonment distribution, and equipment lines in the high-voltage switch chamber, the low-voltage switch chamber and the transformer chamber are M-shaped, U-shaped or V-shaped. Different from the prior art, the novel box-type transformer station enables the volume of the box type transformer station to be reduced by 1 to 3 times compared to a conventional transformer station through innovative adoption of an upper-lower multilayer distribution structure, reduces the area of occupied land, facilitates transportation and decreases the transport cost; and a downward pedestal of the conventional box type transformer station does not have to be manufactured, such that the difficulty of a construction project is reduced, the cost is decreased, and unfavorable influences brought by moisture in the half-embedded pedestal to each device in the box type transformer station can be better avoided.

The invention discloses a box-type substation. The box-type substation at least comprises a high-voltage switchgear chamber, a low-voltage switchgear chamber and a transformer chamber, which are distributed in the shape of steps, wherein equipment circuits in the high-voltage switchgear chamber, the low-voltage switchgear chamber and the transformer chamber are M-shaped, U-shaped or V-shaped. The box-type substation is different from the prior art on the aspect that a structure that a plurality of layers are distributed up and down is creatively adopted, so that the size of the box-type substation is 1 to 3 times smaller than that of the traditional substation, the occupation area is reduced, the box-type substation is convenient to transport, and the transportation cost is reduced; a downward foundation of the traditional box-type substation is not required to be manufactured, the difficulty for constructing a project is reduced, the cost is reduced, and adverse influence to each piece of equipment in the box-type substation by humidity in the semi-buried foundation can be better avoided.

The invention relates to a three-column pull plate type dry amorphous alloy transformer which is used for being connected with a group grid system through a triangular or star connection method, the transformer comprises an upper clamping piece, a pull plate, a lower clamping piece and an iron core, the upper clamping piece, the pull plate and the lower clamping piece are sequentially connected from top to bottom, and the iron core is fixedly connected with the pull plate. The iron core is an amorphous alloy iron core, a three-phase three-column type structure is adopted, and the iron core is sequentially sleeved with a low-voltage coil and a high-voltage coil. Compared with the prior art, the three-column pull plate type dry amorphous alloy transformer has the advantages that the three-phase three-column structure is achieved, the transformer is suitable for the triangular connection method and the star connection method, the loss and noise are low, and the structure is firm.

The invention discloses a medium-high voltage cable for a smart power grid and a preparation method of the medium-high voltage cable, and relates to the technical field of power cables. In the structure of a composite shielding layer, an annealed soft copper strip can be effectively grounded to protect the long-term normal operation of a wire core; a graphene coating semi-conductive band has an excellent discharge effect under the condition of assisting in shielding heat energy and can achieve secondary protection of the wire core; miniature collectors are installed within a fixed distance outside the graphene coating semi-conductive band; after failure of the cable, the two miniature collectors at the head and tail of the fault section can instantly emit high-frequency electromagnetic waves, and a fault point can be quickly and accurately positioned through partial discharge equipment, so that maintenance is conducted in time; an inner lining layer, an armor layer and an outer sheathlayer are combined to form a whole which has excellent physical and mechanical properties, the whole cable is not easy to scratch and damage when being directly buried in soil and gravel in the open air and field and other severe environments, and rapid laying work and later maintenance work can be realized.

The invention provides a preparation process of a connecting conductor material for a power source system of a new energy vehicle. The preparation process includes discharging, material strip detection, slitting, loading, polymer diffusion welding, surface treatment, punching, polishing, secondary blanking, secondary polishing, electroplating, third-time polishing, sleeving/plastic dipping, inspection, packaging, and the obtaining of the finished product. The polymer diffusion welding step includes first placing the well slit material in a jig for positioning; and a well-positioned to-be-welded material in a graphite welding area for welding. The material has the advantages of strong applicability, strong electrical conductivity, high current resistance, small resistance value and durability. The material is mainly used to connect each unit battery pack in the new energy vehicle power source system to finally form a power system of the electric vehicle.

The invention relates to the motor vehicle tail gas remote sensing equipment technology field and especially relates to a structure used for realizing adjustable performance of a light path in a space. The structure comprises a fixing bottom plate, a module fixing plate and a module adjusting plate. An adjustment slot is arranged in a middle portion of the fixing bottom plate, and an adjustment embossment which is cooperated with the adjustment slot is arranged at a bottom of the module fixing bottom plate. Two sides of the fixing bottom plate and the module fixing plate are provided with threaded holes. After upper and lower angles of the module fixing plate are adjusted, the module fixing plate passes through the threaded holes through a bolt so that the fixing bottom plate and the module fixing plate are connected. Adjustment holes are arranged on two sides of the module adjusting plate, and an adjustment bolt passes through an adjustment hole and is connected to the module fixing plate. The mechanism can be used to ensure that an ultraviolet telemetering gas analysis module and a tail gas laser telemetering gas analysis module do not affect each other when a light path is adjusted, and a single module can be individually adjusted in horizontal and vertical directions.

The invention discloses rodlike aggregate for lightweight castable and a preparation method of the rodlike aggregate for lightweight castable. The preparation method includes: subjecting Guangxi whiteclay, a binding agent and a water reducing agent to dry mixing, then adding water, and mixing to obtain mixed paste; using a vacuum extruder to extrude the obtained mixed paste under conditions thatthe pressure is 1-2MPa, the vacuum degree ranges from -0.085MPa to -0.095MPa, and the temperature during extrusion is 15-25 DEG C so as to obtain a rodlike aggregate blank with the basic diameter being 0.6-3mm; drying and baking to obtain the rodlike aggregate for lightweight castable. By the preparation method, early-stage large-quantity mould preparation and continuous mould replacement processes are avoided, production cost is greatly reduced, production efficiency is increased by 3-5 times as compared with previous production efficiency, continuous automatic production is realized, low cost, low energy consumption and high efficiency are realized, and continuous batch production and high social and economic benefits are realized.

The invention discloses an LED light-emitting board without a dark side. The LED light-emitting board without the dark side comprises a light-emitting board body and an LED light bar; a notch is formed in one side of the light-emitting board body and arranged on the shady face; a boss is arranged on the light-emitting face; the LED light bar is installed at the notch of the light-emitting board body; an L-type aluminum connection board is installed on the side face of the box and fixed to the side face of the boss through heat conduction double-faced adhesive tape; and the back face of the L-type aluminum connection board is fixed to the shady face of the light-emitting board body. According to the LED light-emitting board without the dark side, the whole light-emitting face can emit light, the overall product is more attractive, the use effect is good, and the defect that a power line is prone to being pulled and broken can be overcome.

The invention discloses a five-linkage-rod mechanism for non-spherical element polishing. The mechanism mainly comprises a machine frame, main shafts, crank sliding tables, spherical hinge mechanisms,connecting rod sliding tables, connecting rods, a workpiece, positioning measuring tools, a floating head, a control box, a pitch lap and a rapid disassembling module, the two main shafts, the cranksliding tables, the spherical hinge mechanisms, the connecting rod sliding tables and the connecting rods form the closed two-spherical-hinged three-degree-of-freedom five-rod mechanism, the two positioning measuring tools accurately determine the position of the workpiece relative to the two main shafts, the control box is used for controlling the rotating speed and the rotating angle of the mainshafts, the length of the crank sliding tables and the length of the connecting rod sliding tables through reading codes, and the connecting rods drive the pitch lap to realize polishing machining. The five-linkage-rod mechanism is a mechanism which is based on three-degree-of-freedom five-connecting-rod mechanism based on the two-spherical-hinged three-degree-of-freedom five linkage rods, controllable residence time type polishing is realized according to the traditional manual polishing characteristic design, the mechanism is suitable for various non-spherical elements, the single removal amount can be controlled at the nanometer level, and the advantages of being flexible in movement, high in reliability, high in machining quality, capable of effectively restraining medium-frequency errors and the like are achieved.

The invention discloses a rotating mechanism mounted on electronic equipment. The rotating mechanism comprises a first rotating rod, a second rotating rod, the electronic equipment connected with thehead part of the first rotating rod, and a rotating outer piece fixedly connected with the tail part of the first rotating rod. The rotating mechanism further comprises a rotary clamping piece rotationally connected with the rotating outer piece; and the rotating outer piece and the rotary clamping piece are in anti-falling self-locking rotary connection. The rotating mechanism mounted on the electronic equipment is simple in structure; on one hand, as a vertical hinge and a transverse hinge are arranged between a disc and a positioning disc, the internal disc still can be not shifted under the influence of criss-cross external force, and the stability of the rotating mechanism is improved.

The invention discloses a rotary bank-off advancing type riverbed deposit sampling device under a self-weight effect. The device comprises a liftable operating platform, a power system, a transmission rod and a sampling tube system, wherein the liftable operating platform is fixed to the side face of a surveying vessel; the power system is arranged on the liftable operating platform; the upper end of the transmission rod is arranged in a hole of the power system through a master bushing and is in drive connection with the power system; the lower end of the transmission rod is connected with the sampling tube system; the power system transmits a shear force to the sampling tube system through the transmission rod; the self-weight of the whole transmission rod and that of the sampling tube system are adopted as drilling pressure to drill to a sampling position, and finally the whole sampling tube system is lifted to the surveying vessel to complete sampling work. The device is simple in structure, convenient to disassemble, and suitable for deepwater sampling in a water reservoir, and can prevent a deposit sample from being disturbed.

The invention relates to a humidity and enthalpy conversion device used for a generation system of a proton exchange membrane fuel cell. A power part consists of a speed regulating motor and a motor controller. A humidity and enthalpy conversion part consists of an upper and a lower end plates, an outer barrel and a porous ceramics humidity and enthalpy conversion column provided with a central shaft. The surfaces of the end plates, which come into contact with the porous ceramics humidity and enthalpy conversion column, are fixedly provided with wear resistant rubber seal pads provided with multiple layers of windshield wiper type projections. The shape of the wear resistant rubber seal pads is the same with the shape of the end plates, central holes, air inlets and exhaust outlets are arranged on the wear resistant rubber seal pads, and the central holes, the air inlets and the exhaust outlets are same with central holes, air inlets and exhaust outlets, which are arranged on the endplates. The multiple layers of windshield wiper type projections of the wear resistant rubber seal pads are arranged along the circumference of the end plates, the central holes, the air inlets and the exhaust outlets. Compared with the prior art, the invention has the benefits of small friction between friction pairs, light wear, small rotating torsion, high reliability, simple structure, low cost, low requirement on mounting accuracy and freedom from the impact of connection and mounting outer forces.

The invention discloses a box type transformer station. The box type transformer station at least comprises a high-voltage switch chamber, a low-voltage switch chamber and a transformer chamber, wherein the high-voltage switch chamber, the low-voltage switch chamber and the transformer chamber are in echelonment distribution, and equipment lines in the high-voltage switch chamber, the low-voltage switch chamber and the transformer chamber are M-shaped, U-shaped or V-shaped. Different from prior arts, the box-type transformer station enables the volume of the box type transformer station to be reduced by 1 to 3 times compared to a conventional transformer station through innovative adoption of an upper-lower multilayer distribution structure, reduces the area of occupied land, facilitates transportation and decreases the transport cost; and a downward pedestal of the conventional box type transformer station does not have to be manufactured, such that the difficulty of a construction project is reduced, the cost is decreased, and unfavorable influences brought by moisture in the half-embedded pedestal to each device in the box type transformer station can be better avoided.