94results about How to "Structural fastening" patented technology

The invention provides a rotor cooling structure which belongs to the field of motor cooling. A motor rotor is cooled as a whole by circulating pressed cooling oil fluid in the motor rotor. The motor rotor cooling structure comprises a high speed rotary joint, a ferrule-type pipe joint, a motor rotor body, a partially trepanned rotor shaft and the like. The high speed rotary joint comprises a bearing, a sealing ring and an external interface. The ferrule-type pipe joint comprises a ferrule, a nut, a joint body, a combined washer and the like. When aluminium casting is carried out at the corresponding position of the motor rotor body, a dummy shaft is used to cast an aluminum tube at the corresponding position of the rotor body, and a short circuit ring and the aluminum tube cast in the rotor body are cast into a whole body. A blind hole and a screw hole which fixes the ferrule-type pipe joint are arranged in the corresponding position of the partially trepanned rotor shaft. An oil collector comprises an oil collecting tank and a skeleton seal. According to the invention, the overall rotor body is cooled by the cooling oil fluid; the possibility of burning is reduced; the hidden danger of cooling fluid leakage is avoided; the vibration noise of a motor is reduced; and the service life of the motor is prolonged.

A circuit board fastening structure includes a seat, a fastening plate movably mounted onto the seat, and a circuit board. Anchoring members are provided to confine the circuit board. The seat has a detent wall to anchor a detent member located on the fastening plate so that the fastening plate and the circuit board may be coupled and anchored securely.

The invention relates to space truss and spaceflight loading structures, in particular to a space truss and spaceflight loading structure for space operation. The space truss and spaceflight loading structure comprises a box body structure and a space truss body. One end of the space truss body is fixedly connected with the bottom of the box body structure. The other end of the space truss body is connected with a tool. A restricted damping layer is arranged on the outer wall of the box body structure. The space truss body comprises long pipe assemblies, short pipes and square connecting blocks, wherein the multiple long pipe assemblies are connected through the square connecting blocks so that a multi-section square or triangular frame can be formed, and every two adjacent squaer connecting blocks are connected through the corresponding short pipe perpendicular to the long pipe assemblies. The space truss and spaceflight loading structure has great damping performance, the optimal damping effect can be achieved by changing the thickness, the material, the laying position and the laying area of the viscoelastic damping layer, and a precise photoelectric instrument is installed in the box body structure for astronauts to perform space operation.

The invention relates to a mobile phone shell manufacturing technology. The technology comprises the steps of material selecting, punching, spraying, vibrating, tamping, drying, cutting, cutting molding, grinding and polishing, edge grinding and paint coating. According to the mobile phone shell manufacturing technology, by selecting superior basswood and thoroughly wetting, tamping and drying the basswood, the structure of the basswood is more compact, therefore, a manufactured mobile phone shell is higher in hardness and has the better abrasive resistance, and the service life of the mobile phone shell is prolonged.

The invention discloses an electric tool shell and an electric tool. The electric tool shell comprises at least one first shell element and at least one second shell element. The first shell elementsand the second shell elements are connected together along at least one contact line and/or contact face. The first shell elements and the second shell elements are connected without screws. Modularized assembling structures are adopted inside the electric tool, including at least one drive system unit module, at least one controller unit and at least one battery unit module which are all fixedlyconnected with the electric tool shell, wherein a locking structure is arranged on the drive system unit module. The electric tool is compact in structure and smaller in size, no screws are adopted for connection of the shell, and the surface of the shell is provided with visual holes as few as possible.

The invention discloses an electric power construction device with a security fence, which comprises an electric power device, a support, a mounting hole, a reinforcing plate, a driven expansion fence, a anti-collision plate, a protective hand railing and a driving telescopic fence; according to the invention, a driving mechanism drives a lifting mechanism to rotate, the driving telescopic fence is lifted upwards through a lifting rack, so that the security fence can automatically stretch and the storage is facilitated, and the driving telescopic fence is provided with the anti-collision plate, which can avoid collision and damage of the security fence and improve the practicability. The support mechanism can strengthen the driving telescopic fence to drive the protective hand railing to rise, so that automatic decline does not appear, the security fence is small in size, can be stretched when in use, and is compact and tight instruction, the protection effect is obvious.

The invention discloses a guardrail for a wooden gallery bridge and a construction method thereof. Theguardrail includes piles;a cross bar, a support bar and a mounting rod are respectively arranged between the piles, a support block and a fixing support bar are respectively arranged on that mounting bar, a support rod is movably connecting with that fixed support rod, a support bar is movably connecting with a positioning bar, one end of that positioning bar is fix on the cross bar, a receiving groove is arranged on the support bar, a threaded bar is movably connected in the receiving groove, a railing is arranged between the support block and the cross bar, a reinforcing plate is arranged between the railings, a positioning hole is arranged on the reinforcing plate, the threaded bar passes through the positioning hole, and one end of the threaded bar is connected with a locking cap; the construction method comprises the following steps: (a) railing installation; (b) adjustment; (c)that column pile is in place; (d) Gradual installation. The invention has the advantages of stable structure, simple assembly, time-saving and labor-saving, convenient maintenance in the later period, easy operation and gradual orderly adjustment of the construction method, which is favorable for controlling the construction progress and ensuring the construction quality.

The invention discloses an agricultural planting film mulching device which comprises a rack, a traction frame, ditching vertical arms, traction assemblies, ditching coulters, a film laying assembly,film pressing assemblies and a spraying assembly. The traction frame is fixedly installed in the center of the end face of one side of the rack through bolts, and the ditching vertical arms are fixedly installed at the two sides of the bottom of one end of the rack through welding; and the ditching coulters are fixedly installed on the bottom end faces of the ditching vertical arms through bolts,the traction assemblies are arranged at one sides of the exteriors of the ditching vertical arms, the film laying assembly is arranged at the outer side of the end face of the rack, the film pressingassemblies are arranged at the two sides of the interior of the end face of the rack, and the spraying assembly is arranged above the top end face of the rack. When the agricultural planting film mulching device is used, the labor intensity can be effectively reduced, the film mulching quality can be effectively improved, the labor time is saved, and the film mulching efficiency is improved; and meanwhile, the bonding tightness of covering soil and the surface of a film can be improved, and the situation that the covering film falls off can be avoided.

The invention discloses a casting method of an oil pressure casting. The casting method of the oil pressure casting comprises the steps that sand mold manufacturing is conducted, iron liquid preparation is conducted, specifically, raw materials including, by mass, 45%-50% of pig iron, 30%-35% of scrap steel and 15%-25% of foundry returns are weighed; then a carburant which accounts for 0.7%-1.1% of the total amount of the pig iron, the scrap steel and the foundry returns is added; spheroidizing and inoculating are conducted, spheroidized iron liquid is slagged off and stood, and the iron liquid is poured into a casting system of the oil pressure casting in the step (1) when the temperature is reduced to 1370 DEG C-1400 DEG C so as to form a casting; metal-stream inoculation is carried out by using inoculation powder while pouring is carried out, and the addition amount of the inoculation powder is 0.08%-0.10% of the total mass of the raw iron liquid; and after the casting is cooled, the nodular cast iron oil pressure casting is obtained. The casting method of the oil pressure casting has the advantages that the structure is firm, the strength is high, the defects of sand falling, slag inclusion, air holes and the like are not prone to occurring, the oil pressure working face structure of the obtained casting is smooth and free of casting defects and white openings, and the method can be used under the high-pressure condition and is free of oil leakage and oil seepage.

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 two-dimensional combined type packaging frame and an express packaging bag adopting the same. An upper frame, a lower frame and stand columns of the packaging frame are of aninserting-mounting structure, are fixed through inserting plates at the same time, and are used for placing objects on the inner side of the packaging frame in the transportation and storage processes; and the objects are fixed to the inner side of the packaging frame through filler or in a hanging mode, extrusion is prevented, the upper frame and the lower frame are of an integrated structure, thus the mechanical strength is higher, and the packaging frame is suitable for packaging and transporting the large-size objects. As for the composition mode of the express packaging bag, an inner packaging bag is hung on the inner side of the packaging frame, an outer packaging bag is mounted on the outer side of the packaging frame in a sleeving mode, the inner packaging bag is used for packaging the objects, collision and extrusion of the objects are avoided in the transportation and storage process in a hanging mode, the outer packaging bag forms outer-layer protection, and a seal is arranged in a matched mode, so that the privacy of the objects is ensured; and the key point is that the packaging frame and the express packaging bag can be recycled, the logistics cost is reduced, paperpackaging boxes are gradually eliminated, and resources are saved.

A nut having a cutting and fastening structure thereof applied to fasten at least a board with a hole are disclosed. The nut has at least a cutting through itself. The fastening structure includes a bolt and a nut. When the nut is threaded on the bolt, the cutting of the nut and threads of the bolt touch each other for increasing the friction.

The invention relates to machining equipment for injection mold casting. The equipment comprises a fixed bottom plate, guide columns, an upper mold and a lower mold, a plurality of fixed columns are fixedly arranged on the upper surface of the fixed bottom plate, and a supporting plate is arranged at the upper ends of the fixed columns; the lower mold is correspondingly arranged below the upper mold, the lower mold is fixedly arranged above the supporting plate, and a cavity of a concave structure is formed in the upper surface of the lower mold; and the lower surface of the upper mold and the surface of the cavity are each provided with an easy-to-demold layer, and each easy-to-demold layer comprises a reinforcing layer and an anti-adhesion layer which are sequentially arranged from inside to outside. According to the machining equipment for injection mold casting, the machining equipment for injection mold casting is arranged to be of an integrated structure of the fixed bottom plate, the guide columns, the upper mold and the lower mold, the fixed bottom plate and the guide columns play a supporting and fixing role, so that normal operation of the upper mold and the lower mold is guaranteed, the overall structure is firmer through the connection relation of the guide columns, the supporting plate and a connecting plate, the connecting strength is high, and collapse and falling are not prone to occurring in the using process.

The invention relates to a basswood shell manufacturing process. The basswood shell manufacturing process comprises the following steps: material selecting, spraying, vibrating, rolling, tamping, drying, cutting, cutting molding, polishing, edge grinding and painting. According to the basswood shell manufacturing process, superior basswood is selected, after being wetted thoroughly, the basswood is tamped and then dried, so that the structure of the basswood is fastened, a manufactured mobile phone shell is high in hardness and has good wear resistance, and the service life of the mobile phone shell is prolonged.

The invention discloses a movable printing device comprising sliding wheels, a base, a control panel, a fixing seat, a motor, a lifting air cylinder, fixing bolt, a telescopic mechanical arm, a resetspring, a connection block, a print head, an electromagnetic attracting plate, a face plate and limiting blocks. The movable printing device is characterized in that the sliding wheels are arranged onthe lowest portion of the whole structure, the telescopic mechanical arm is arranged at the top end of the lifting air cylinder, and the left end and the right end of the panel are each provided withone limiting block. According to the movable printing device, the device is controlled to move through the sliding wheels, so that manpower consumption is reduced; a product is firmly attracted to the face plate through the electromagnetic attracting plate, so that the fixation function is achieved; the lifting air cylinder moves up and down through the pressure action, so that the height position of the print head can be adjusted according to products of different sizes; the print head can be driven by the telescopic mechanical arm to move in the horizontal direction, so that more complete printing can be conducted on the product, and the printing precision is improved. The movable printing device further has the features of being low in manufacturing cost, firm and durable and achievingflexible connection of all components.

The invention discloses a water pipe joint and a water pipe mounting structure. The water pipe joint comprises a stud and a screw head, wherein the center of the stud and the center of the screw head are hollow tubular structures; and outer thread teeth are arranged on the outer surface of the stud. The water pipe joint is simple in production process, is relatively good in sealing property, can be quickly mounted on the spot, and is very practical.

The invention belongs to the drill bit technical field, and especially relates to a reinforced concrete rotary drill bit comprising a drill spindle; the top of the drill spindle is provided with a connecting ring having a connecting pole; a connecting hole is arranged in the connecting pole; the bottom face of the connecting ring is provided with a reinforcement plate; the other side of the reinforcement plate is fixed on the drill spindle; the outer wall of the drill spindle is provided with a spiral slice having annular limit platforms; picks are arranged in the limit platforms; the spiral slice is also provided with limit bosses arranged in middles of the limit platforms; the bottom face of the pick is provided with a limit groove matched with the limit boss; the outer wall of the pick is provided with a limit ring arranged on the top of the limit platform; the pick is connected with the limit platform through a bolt.

The invention provides a filtering mechanism and a foot bath device, the filtering mechanism relates to a shell and comprises a filtering box and a circulating water pump, a chassis cover is arrangedin the shell and divides an inner cavity of the shell into an upper cavity and a lower cavity, a mounting groove is formed in the top of the chassis cover, and a medicine box is arranged in the mounting groove. When the filtering mechanism is applied to the foot bath device, the upper cavity can serve as a foot bath cavity, Chinese herbal medicine and the like are placed in the medicine box to besoaked, the circulating water pump is started, and therefore water in the upper cavity passes through the medicine box, then enters the mounting groove and returns to the upper cavity, and the medicine box is flushed through the rapidly-circulating water; the medicine effect can rapidly permeate out, and the exertion of the medicine effect is improved; when the foot bath device is not used, residual water in the upper cavity and the mounting groove can enter the lower cavity through the water leakage holes, and the residual water in the upper cavity and the mounting groove is avoided.