Installation structure of electric motor driving device

The invention relates to an installation structure of an electric motor driving device comprising a main frame for installing a circuit board, wherein the main frame comprises a plurality of groups of first installation holes respectively arranged at the sides of the main frame and at least two installation brackets, each of which comprises a first fixing structure for fixing the installation brackets to any group of first installation holes and a second fixing structure for fixing the installation brackets to a plane. According to the invention, components with maximal strength in structural members are fully utilized as force-bearing parts of the installation structure, and the installation structure can adapt to various installation circumstances.

Method and apparatus for preapring high strength and high modulus graphitized carbon fibers

A high-strength and high-modulus graphitized carbon fibre is prepared through introducing cooling water, argon gas and methane gas to a plasma generator, turning on the plasma generator by applying 3-5 kg/sq.cm of pressure, 20-40 V and 80-100 A to form a high-temp area in it at 2500-3500 deg.c, and passing carbon fibre through it while staying in it for 5-15 S.

Single component flexible epoxy sealant

The invention provides a single component flexible epoxy sealant used for packaging a low-voltage electronic component, which comprises the components: 25-45% of epoxy resin, 0-6% of diluent, 2-12% of latent curing agent, 0-1% of accelerating agent, 0.2-1% of pigment, 1-6% of thixotropic agent, 0.2-0.4% of coupling agent and 35-70% of filler. The single component flexible epoxy sealant solves the problems of component failure caused by high brittleness and concentrated stress of the common epoxy sealant in the process of packaging a minitype electronic component. The sealant is simple in preparation technique, convenient to use, low in curing temperature, good in storage stability and flexibility of a cured substance, low in cost and wide in application scope. The single component flexible epoxy sealant can be used for packaging the minitype electronic component, and greatly improves the package reliability and durability.

Method and equipment for producing graphitized fiber

Extraction process for industrial solid material

A soxhlet extraction method for industrial continuous production of solid material includes such steps as adding raw material in immersing container, continuously adding solvent from condesner to a certain level, flowing the solution into distillating still, evaporating, concentrating, condensing the evaporated solvent for cyclic use, solid-liquid separation by Buchner filter, evaporating to obtain solid component, and mechanical separation of undissolved component.

Extraction process for industrial solid material

One-component polyurethane skirt coating used for automotive

The invention relates to a one-component polyurethane skirt coating used for automotive. The coating is made by the following steps: uniformly mixing polyol, blocked isocyanate, catalyst, thixotropic agent, water absorbent, inorganic filler and pigment in a kneading machine, and further dispersing the mixture by a three-roller grinder. The coating solves the problem of poor decorative effect whenthe existing PVC (polyvinyl chloride) stone strike prevention material is applied in the front of a vehicle, at the lower part of a door, and at the threshold or other parts. The preparation method is easy, the use is convenient, the adhesion force is high, the resistance to stone strike is excellent and the storage stability is fine. The surface of the coating obtained is flat, fine and smooth and the gloss retention is greater than 85%. The coating is superior to the PVC stone strike prevention coating in tensile strength and elongation at break. The light fastness and weather fastness of the ...

Heat-cured high-intensity flaky adhesive for automobile and preparation method thereof

The invention provides a heat-cured high-intensity flaky adhesive for an automobile and a preparation method thereof. The heat-cured high-intensity flaky adhesive for the automobile comprises three layers, wherein the upper layer is made of glass fiber cloth, the middle layer is made of a high-intensity adhesive, and the bottom layer is made of barrier paper. The high-intensity adhesive is prepared from synthetic rubber, a plasticizer, epoxy resin, thermoplastic resin, tackifying resin, a curing agent, a vulcanizing agent, an accelerating agent, an anti-aging agent and calcium carbonate. Due to the adoption of the flaky adhesive, the rigidity of a metal sheet can be increased greatly in the automobile manufacturing process, the running noise of the automobile can be reduced, and the comfort and the safety of the automobile are ensured. The heat-cured high-intensity flaky adhesive has high adhesion to an oil surface metal material, can be operated manually and directly in the construction ...

Embedding construction method of orifice pipe

The invention discloses an embedding construction method of an orifice pipe. The method comprises the following steps: a. drilling a horizontal or upward orifice pipe section borehole according to the outer diameter of the orifice pipe; b. drilling a small-caliber borehole at a certain angel at the open side of the orifice pipe section borehole by utilizing a handheld pneumatic rock drill on the pregrouting working surface, communicating the small-caliber borehole with the orifice pipe section borehole and installing a grouting mouth; c. simply and easily fixing one end of a small-diameter plastic flexible pipe with the length larger than the length of the orifice pipe in the inner port of the orifice pipe; enabling the other end to be exposed out of the outer exposed end of the orifice pipe; transferring the orifice pipe into the orifice pipe section borehole to be fixed in the definite position; maintaining the plastic flexible pipe to be positioned in the highest point at the bottom ...

Abnormal-shape spinneret plate

The utility model relates to a special shaped spinneret plate, which is composed of an inlet zone, a cone diversion zone and a micropore zone. The utility model is characterized in that a choked flow piece is arranged in the micropore zone, and the choked flow piece and the micropore zone form a special shaped spinneret hole. The utility model has the advantages of simple structure and easy manufacture, and the surface area of fiber can be increased.

Pill for radically treating male and female hemorrhoid

The Chinese medicinal materials of bupleurum root, sping pear, cihongpi, purslane, sophora flower, grewia abutilifolia and fragrant glorybower are used as raw materials, and the intestine and suger are added, then they are ground, and decocted and made into paste-like material, and finally make into the invented pill preparation. Said invented pill medicine is taken in only for six days without need of operation, and can cure various hemorrhoids including internal hemorrhoid, external hemorrhoid, hemorrhoidal bleeding, bloody stool, enteritis, enterotoxin, hemorrhoidal swelling pain and constipation, and its cure rate is up to 100% ...

Adhesive and modified EVA (ethylene vinyl acetute) foaming composite for automobiles

The invention discloses adhesive and modified EVA (ethylene vinyl acetute) foaming composite for automobiles. The foaming composite consists of the following components in parts by weight: 60-80 parts of EVA resin; 5-15 parts of epoxy resin; 5-25 parts of foaming agent; 0.1-5 parts of foaming accelerator; 0.1-5 parts of cross-linking agent; 0.1-5 parts of curing agent; 0.1-5 parts of curing accelerator; 0.1-5 parts of tackifier and 0.1-20 parts of filler. The obtained foaming composite can foam at the temperature range of 140-210 DEG C; and with uniform foam holes, high volume expansion ratioand excellent adhesive force with steel sheets or galvanized steel sheets, the adhesive and modified EVA (ethylene vinyl acetute) foaming composite can fill or seal the cavity of an automobile body and play sound-insulation and vibration-reduction roles.

Motor drive device and main frame

The invention relates to a motor drive device which comprises a main frame, a drive plate, a control plate and a heat radiating assembly, wherein the main frame comprises a plate-shaped main body; the drive plate and the control plate are respectively fixed to the front of the plate-shaped main body and connected by an interface or a switching line; and the heat radiating assembly is fixed to theback of the plate-shaped main body and positioned under the drive plate. The invention also discloses the main frame in the motor drive device. The invention can prevent mutual interference by respectively integrating the strong current processing part and the weak current processing part into the drive plate and the control plate; and the whole device has compact structure and convenient installation and maintenance by reasonably laying the drive plate and the control plate to the same frame.