134results about How to "High rigidity" patented technology

A thermoplastic moulding composition, in particular a polyamide moulding composition, consisting of, by weight:

• (A) 20-88%—thermoplastic material;
• (B) 10-60%—fibrous fillers, formed from
  • (B1) 10-60%—glass fibres, selected from:
    • glass fibres (B1_1) with a non-circular cross section, wherein the axis ratio of the main cross-sectional axis to the secondary cross-sectional axis is at least 2;
    • high-strength glass fibres (B1_2) with a glass composition (substantially SiO2, AlO, and MgO; or mixtures thereof;
  • (B2) 0-20%—glass fibres, different from glass fibres of component (B1) and have a circular cross section; and
  • (B3) 0-20%—further fibrous fillers, different from fibres of (B1) and (B2), not based on glass, and selected from the group: carbon fibres, graphite fibres, aramid fibres, nanotubes;
• (C) 2-10%—LDS additive or a mixture of LDS additives;
• (D) 0-30%—particulate filler;
• (E) 0-2%—further, different additives;

the sum of (A)-(E) is 100% by weight.

The invention provides a manufacturing method of a carbon fiber composite material rectangular hollow pipe for a mechanical arm, and the obtained rectangular hollow pipe. A carbon fiber composite material serves as a raw material and is carbon fiber prepreg; the prepreg comprises one-way and fabric prepregs and the rectangular hollow pipe is manufactured by a mould pressing inflation forming method. According to the manufacturing method of the carbon fiber composite material rectangular hollow pipe, a rectangular thin-walled hollow pipe is manufactured by performing mould pressing inflation combined forming on the carbon fiber prepreg serving as the raw material. Compared with the prior art, the invention has the advantages that the carbon fiber composite material rectangular hollow pipe has high bearing capacity, high rigidity and light weight; during operation, the arm is more stable in action and moves and stops more quickly; the arm can be quickly positioned by the vibration damping characteristic of the carbon fiber composite material; the carbon fiber composite material is applicable to precision equipment due to the zero thermal expansion coefficient; equipment investment is small; a mould is simple to manufacture; production energy consumption is low; production period is short; automatic production is realized.

The invention discloses an all-around multifunctional climbing robot, and belongs to the technical field of automatic control. The all-around multifunctional climbing robot solves the technical problems that in the prior art, the cleaning efficiency is low, the cleaning is incomplete, the cleaning is not adapted to an un-flat wall surface, and accidents easily happen. The all-around multifunctional climbing robot comprises a cleaning mechanism, a front compartment body, a rear compartment body, a steering engine, a plurality of cyclone type vacuum suckers, a turbine, a steering mechanism, a drive system and a caterpillar band mechanism, wherein the turbine is fixedly connected in the front compartment body; the steering engine is fixedly connected with the front compartment body and the rear compartment body respectively; the cleaning mechanism comprises a watering mechanism and a cleaning plate which are connected with the front compartment body and the rear compartment body respectively; the caterpillar band mechanism is connected with the front compartment body and the rear compartment body respectively; the cyclone type vacuum suckers are uniformly distributed on the front compartment body and the rear compartment body; each cyclone type vacuum sucker is in spherical hinge connection with the front compartment body or the rear compartment body; the steering mechanism is distributed in the front compartment body; the drive system is distributed in the front compartment body and the rear compartment body; the turbine is connected with each cyclone type vacuum sucker through a pipeline, and used for providing air pressure to each cyclone type vacuum sucker.

The invention discloses a single-piston-rod damper and belongs to the technical field of structural vibration control devices. The single-piston-rod damper comprises a cylinder which is divided into a working chamber and a compensation chamber, the working chamber and the compensation chamber are separated from each other through a floating piston which is sealed together with the cylinder, and the working chamber is filled with shear thickening fluid (STF); one end, with the tip being connected with a working piston, of the piston rod is arranged in the working chamber in the cylinder, and the other end of the piston rod is arranged outside the cylinder and connected with an upper connecting part; and an elastic part is arranged in the compensation chamber, one end of the elastic part is connected with the floating piston, and the other end of the elastic part is connected to a rubber piston arranged at the end of the cylinder. When the shearing rate is high and the instantaneous vibration velocity in the working chamber is high, shear thickening of the STF occurs to generate damping force, so that the anti-impact vibration-reduction effect of engineering structures is achieved; and when the shearing rate is low and the instantaneous vibration velocity in the working chamber is low, the elastic part in the compensation chamber elastically compensates for the initial rigidity of the damper, so that vibration reduction and energy dissipation of the engineering structures are achieved. The single-piston-rod damper is provided with the elastic compensation chamber to provide appropriate compensation rigidity, and the anti-impact vibration-reduction effect of the damper is achieved.

A FRP reinforced rubber vibration isolator and manufacturing method thereof, relate to a vibration isolator and a manufacturing method thereof. The vibration isolator is formed by a rubber layer and a FRP plate with adhesive layers arranged on the upper and lower surfaces which are staggeredly superposed, vulcanized and bonded, wherein the FRP plate is made of fiber reinforced materials and a resin substrate, the fiber reinforced material is one or more of glass fiber, high-strength glass fiber, carbon fiber, aramid fiber, basalt fiber or polyester fiber, the resin substrate is one of the epoxy resin, unsaturated polyester resin, phenolic resin or vinyl ester resin, the FRP plate is formed by superposing 1 to 50 single layer plate which have different principal directions. The manufacturing method comprises preparing FRP plate, arranging adhesive layer, superposing, vulcanization molding. The vibration isolator has higher bearing capacity and excellent damping performance, durability, corrosion resistance, and has simple and applicable manufacturing method.

The present invention discloses an automobile engine assembly epicyclic box applicable to several models. The invented automobile engine assembly epicyclic box includes pallet assembly, supporting head assembly and box cover. The pallet assembly is formed from pallet, slideways and buckle latches, on the pallet two fixed slideways are set, said two fixed slideways are parallelly-arranged, two ends of two mobile slideways are respectively fixed on the tracks of said two fixed slideways, in the front of pallet and in the back of pallet are respectively set two buckle latches; the box cover is connected with pallet by means of buckle latch; the supporting head assembly includes fixed seat, threaded rod, swivel nut, steel tube and base seat, the fixed seat is connected with the threaded rod by means of pin shaft, the upper and lower two sides of bearing surface of said fixed seat are respectively equipped with hole, the swivel nut is placed outside of said threaded rod, the swivel nut exterior is equipped with said steel tube, the swivel nut, steel tube and base seat are welded into one body, and the base seat is fixed on the mobile slideway.

A robot-aided pelvis restoration system comprises a reset execution unit, a fixing unit, a supporting unit and a control unit, wherein the rest execution unit is fixed to the upper portion of the supporting unit, and the fixing unit is fixed to the front end of the reset execution unit and is fixedly connected with the supporting unit. The robot-aided pelvis restoration system aims at solving the problems of poor fracture reduction, large in operation strength of a doctor and large in quantity of rays radiated onto the doctor performing operation and a patient. In the robot-aided pelvis restoration system, the configuration of a rotary motion mechanism enable rotation errors output by the system to be smaller, and the system has the advantages of being high in mechanism accuracy, large in load and rigidity, reasonable in working space, compact in structure and the like and has wide application prospect in the technical field of medical instruments.

The invention discloses a method for preparing a heat control coating layer on the surface of magnesium alloy, which relates to a method for preparing a heat control coating layer on the surface of alloy. The invention solves the problem of large mass of the heat control coating layer of aluminum alloy as a base body. The preparation method is realized according to the following steps of: preprocessing the surface of magnesium alloy; preparing magnesium alloy microarc oxidation electrolyte; adding the magnesium alloy microarc oxidation electrolyte into a microarc oxidation electrolytic bath; placing the preprocessed magnesium alloy into the magnesium alloy microarc oxidation electrolyte to be used as an anode; supplying power by a pulse microarc oxidation power supply to react for 5-40 minutes; then washing the surface of magnesium alloy with distilled water and drying to obtain the heat control coating layer on the surface of the magnesium alloy. The density of the magnesium alloy used by the invention is small, is just 1.73g/cm3 and is about two thirds of the density of the aluminum alloy. Compared with a method by adopting the aluminum alloy, the heat control coating layer obtained by the method reduces weight by 30 percent.

The invention relates to a mechanical seal ring with maple-leaf-like grooves. 2-50 maple-leaf-like grooves are circumferentially and evenly distributed in one end surface of the seal ring and are 1-100 mu m deep; each maple-leaf-like groove comprises a radial linear groove and five grooves, four of the five grooves are symmetrically distributed on two sides of the radial linear groove, another groove is connected with one end, close to the inner diameter of the seal ring, of the radial linear groove, and the radial linear groove is opened in the edge of the outer diameter of the seal ring; and the maple-leaf-like grooves are symmetric about the radial central axis. The seal ring is applicable to one-way rotation and two-way rotation machinery, is used for liquid sealing or dry gas sealing, can effectively reduce abrasions of seal end surfaces, has the relatively good flow guiding effect, the better opening force and the smaller leakage amount, has the better sealing effect and dynamic pressure performance, runs more stably and is wider in application range, and the cost is saved.

A force transducer of beam and ring type is prepared as applying force-bearing structure of beam and ring integrated form, using force acted on beam to cause strain value at four strain sensitive positions on internal wall of ring structure in middle to be varied, measuring out acting force size by measuring strain at four said positions, arranging concave-convex structure at internal wall of ring structure, using rubber cover to seal said transducer and using press plate to fit said rubber cover with internal surface of ring structure closely to undertake seal function.