71results about How to "Sufficient connection strength" patented technology

The invention provides a heat convection testing method and a system for a composite insulator including an artificial defect. The testing method comprises the steps of fixedly embedding a temperature measuring probe in the composite insulator and enabling the temperature measuring probe to be located on the junction face of a silicone rubber sheath and an epoxy resin core rod; adopting a direct current constant voltage source to perform power supply for the resistance defect of the composite insulator; utilizing the temperature measuring probe to perform real-time detection on the internal temperature of the composite insulator in the power supply process, recording the internal defect temperatures under different currents and using an infrared temperature measurement device to shoot and record the surface temperature distribution situation of the composite insulator; and performing compilation and analysis on recorded data to obtain the relation of the outer surface temperature rise and internal actual temperature rise of the composite insulator. The temperature measuring probe improvable in temperature and a special fixing method are adopted, reliable connecting strength, insulating strength and heating power can be achieved, and the measurement accuracy is finally ensured.

The invention provides a mooring system rigidity automatically measuring and testing device of an ocean structure and belongs to the ocean engineering technical field. The device comprises a model movement control component, a model connecting component and a turntable, wherein, the model movement control component comprises two convex steel plates, two straight circular tubes, two parallel angle irons, five sliding blocks, a servomotor and a guide screw, the two sides of the lower ends between the two convex steel plates are welded with the two parallel straight circular tubes, the two sides of the upper ends between the two convex steel plates are welded with two parallel angle irons, the guide screw is arranged between the two convex steel plates, the servomotor is positioned outside the convex steel plate on the right side and is welded with the extension parts of the two parallel angle irons, the servomotor is connected with the guide screw by a pin, the guide screw is sleeved by a sliding block, the lower end of the sliding block is welded on a square steel plate, the four corners of the square steel plate are welded with the other four sliding blocks with the same forms, the four sliding blocks are respectively sleeved on the two straight circular tubes. The invention overcomes the difficulty of the manual operation, can automatically measure the rigidity of the mooring system in the water and corresponds with the real working environment.

The invention relates to a high-speed feeding mechanism belonging to the field of press machines, and comprising a feeding workbench arranged on a stand, wherein a Y-axis driving mechanism is arranged on the feeding workbench; the upper side of the Y-axis driving mechanism is connected with a beam; the beam is connected with an X-axis driving mechanism; the length direction of the beam is vertical to the Y axis and parallel to the X axis; the Y-axis driving mechanism is a driving mechanism with double servo motors and double lead screws; and the X-axis driving mechanism is a gear rack transmission mechanism. The high-speed feeding mechanism can reduce the vibration of the whole device and ensure smooth running of the device. Matched with a weight reduction design of the beam, the whole feeding mechanism is light in weight, thus ensuring high-speed, accurate and smooth feeding. The high-speed feeding mechanism provided by the invention can feed materials at high speed smoothly, obviously improves the work efficiency, and can be used on a numerical control turret punch press.

The invention discloses a motor stator producing process and aims to combine a producing process with a winding process without a high-precision automatic winding machine. The motor stator producing process comprises the following steps: 1, performing lamination processing so as to obtain a plurality of unit tooth pieces, and producing a plurality of stator tooth parts from the unit tooth pieces through a stamping process; 2, putting insulating parts into the stator tooth parts, and winding coils on the insulating parts; 3, assembling the stator tooth parts with the wound coils into a completestator, completing wiring of the coils, and sleeving connecting parts of the coils by insulating protection tubes; 4, integrally connecting two adjacent stator tooth parts through welding. The process has the beneficial effects that the stator is formed by assembling and welding modularized stator tooth parts, the stator tooth parts are already wound with coils before welding, and a high-precision automatic winding machine is not used, so that the cost can be reduced, the process difficulties can be reduced, meanwhile the stator space can be relatively reasonably utilized by the modularized stator tooth parts, and the size of a motor can be reduced.

Provided is a vehicle interior board that is equipped with a foldable hinge section, has a small number of components and excellent productivity, and is lightweight and very strong. This vehicle interior board is equipped with: first and second boards (10, 20) that are constructed by forming hard foamed polyurethane layers (13, 23) in spaces that are respectively sandwiched by pairs of thin plates (11, 12, 21, 22); and a connecting member (30) that comprises a porous structure having a recessed groove (34) and is partially placed inside the spaces. The hard foamed polyurethane layers (13, 23) are also formed in gaps (18, 19, 28, 29) between the thin plates (11, 12, 21, 22) and the connecting member (30) so as to connect the respective boards (10, 20) and the connecting member (30) together. Consequently, the respective boards (10, 20) can be formed and connected together into one body during the formation process of the first board (10) in order to form a foldable, lightweight, and very strong vehicle interior board (1). As a result, the number of components can be reduced, the manufacturing process can be simplified, and the productivity can be improved.

Provided is a vehicle interior board that is equipped with a foldable hinge section, has a small number of components and excellent productivity, and is lightweight and very strong. This vehicle interior board is equipped with: a first board (10) that is constructed by forming a hard foamed polyurethane layer (13) in a space that is sandwiched by a pair of thin plates (11, 12); and a second board (20) that comprises a porous structure having a recessed groove (24) formed on one of the main surfaces (20b) thereof and is partially placed inside the space and connected to the first board (10). The hard foamed polyurethane layer (13) is also formed in gaps (31, 32) between the thin plates (11, 12) and the second board (20) in order to connect the respective boards (10, 20) together. Consequently, the respective boards (10, 20) can be connected together into one body during the formation process of the first board (10) in order to form a foldable, lightweight, and very strong vehicle interior board (1). As a result, the number of components of the vehicle interior board (1) can be reduced, the manufacturing process can be simplified, and the productivity can be improved.

Disclosed is a geared motor, which arranges the connecting hole and the mounting hole in reason and connects the motor and reducer organically, and is compact and easy to assemble and has an adequate connecting strength. The motor shell main body (the lateral end face of the reducer in the execution mode) and the reducer flange form a square. The square edge extended line of the motor shell main body is crossed to the square edge of the reducer flange. A motor connecting hole is disposed in the radial inner side of the square top for connecting the motor shell main body and the input lateral cover of the reducer (reducer flange). A installing hole is disposed in the corresponding position of the radial outer side of the square edge of the motor shell main body of the reducer flange for installing the reducer on the object machine.

A door fence for children comprises a door fence body. One end of the door fence body is hinged to an outer frame through a hinge joint piece, and connecting pieces are connected outside the outer frame. The position of the whole door fence for the children is fixed through the at least two connecting pieces. The door fence further comprises a hinge joint portion, wherein the hinge joint portion is hinged to the side, opposite to the hinge joint piece, of the door fence body. A lap joint portion is arranged at the position, corresponding to the hinge joint portion, of the outer frame, and the door fence body is in an open state or a closed state when the hinge joint portion is matched and connected with the lap joint portion. A groove is formed in the other side, opposite to the hinge joint portion, of the lap joint portion, a reinforcing piece is arranged in the groove, and the connecting pieces penetrate through the reinforcing piece to be connected with the outer frame. The door fence is precise in connection structure, the problem of the hand pinching of the children can be effectively solved due to the designed connection structure, the width of the door fence can be increased freely at the joint of the door fence and lengthening pieces, and sufficient connecting strength can be ensured. Through the reasonable structure design, cost is saved, and product value is maximized.

The invention provides a frog assembly and a turnout structure. The frog assembly comprises wing rails and a fork heel rail, and the wing rails comprise a first wing rail and a second wing rail; the fork heel rail comprises a first fork heel rail and a second fork heel rail, and one end of the first fork heel rail is inserted into one end of the first wing rail; one end of the second fork heel rail is inserted into one end of the second wing rail; a point rail is included, is arranged between the first wing rail and the second wing rail and is positioned at a joint of the wing rails and the fork heel rail; and the point rail is connected with the wing rails and the fork heel rail through a first connecting part. The invention provides the frog assembly. The wing rails, the point rail and the fork heel rail are arranged to be a detachable structure and the three parts are connected and fastened through the first connecting part. Compared with an integrated alloy steel frog, by using thefrog assembly and the turnout structure of the invention, the performance of the frog is guaranteed, meanwhile, casting machining difficulty of the frog assembly is reduced, manufacturing cost of thefrog assembly is decreased, and in addition, a transportation process of the frog assembly can be more convenient through a detachable structural design.

An electrode of the present invention includes a first electrode part that is in a rod shape and a second electrode part that is in a rod shape and has a smaller diameter than that of the first electrode part, with the first and second electrode parts being welded and integrated with each other in a state in which ends thereof are brought into contact. In the electrode, the first electrode part is made of a conductive cermet, the second electrode part is made of tungsten, and in a welded portion where the first and second electrode parts are welded, an alloy layer comprising molybdenum composing the conductive cermet of the first electrode part and tungsten of the second electrode part covers the whole surface of an end of the second electrode part. Furthermore, the present invention also relates to a metal vapor discharge lamp, which has aluminous tube including a main tube with a discharge space, tubules connected at both ends of the main tube, and electrodes respectively inserted into the tubules.

The invention discloses a steel-concrete bridge body and an assembling construction process thereof. The beam body is a composite beam formed by longitudinally connecting a plurality of prefabricatedsegmental box girders; each segmental box girder comprises a concrete top plate, a concrete bottom plate, a vertically-arranged middle web plate and a pair of side web plates. The middle web plates and the side web plates are corrugated steel web plates; temporary matching pieces are fixed to the side edges of the corrugated steel web plates. After the temporary matching pieces corresponding to the adjacent corrugated steel web plates are mutually connected, the side edges of the corresponding corrugated steel web plates are mutually matched and attached; the side web plates incline by a certain angle so as to form an inverted trapezoidal structure with the concrete top plates and the concrete bottom plates, and flange cantilevers horizontally extending out of the inverted trapezoidal structure are arranged on the two transverse sides of the concrete top plates. Accurate positioning between the box girders can be achieved only through connection between the temporary matching pieces, then the assembling effect between the box girders is guaranteed, the positioning efficiency is greatly improved, and meanwhile the positioning reliability can be guaranteed.

The invention relates to an ergonomic chair which comprises a backrest, a cushion and a bracket, wherein the backrest comprises a frame and mesh cloth fixed on the frame; the middle of the frame is bulged towards the cushion; a headrest inserting slot is formed at the upper end of the frame; a dismountable headrest is inserted into the headrest inserting slot; a waist support inserting slot opposite to the headrest inserting slot in position and having the same structure is formed at the lower end of the frame; the headrest can be inserted into the waist support inserting slot; an inserting strip is arranged at the lower end of the headrest; a rack is arranged on the side face of the inserting strip; and internal teeth matched with the rack are arranged in the headrest inserting slot and the waist support inserting slot; a connecting piece is arranged at a connecting part of the backrest and the end face of the cushion; and connecting bolts are arranged in a penetrating manner and fixed in positions, facing towards the lower end face of the frame of the backrest, on the lower side of the connecting piece. According to the chair, the headrest capable of being mounted and dismountedfreely is mounted at the upper end or the lower end of the backrest, so that the ergonomic chair is freely converted between a chair and a deck chair; and a person, regardless of sitting or lying, ismore comfortable.

The photovoltaic module comprises a substrate provided with grid lines, the grid lines comprise main grids and auxiliary grids, the main grids intersect with the multiple auxiliary grids, the main grids are welded to welding spots of the substrate through welding wires, the first welding spots are located at the two opposite ends of the main grids, and the second welding spots are located between the adjacent first welding spots. The diameter of the welding wire is x, the length of the second welding spot is y, the width of the second welding spot is z, and x, y and z meet the following functions that y is larger than or equal to 1.15 * (1.3 x + 0.19) and larger than or equal to 0.85 * (1.3 x + 0.19), and z is larger than or equal to 1.2 * (0.993x + 0.143) and larger than or equal to 0.8 * (0.993x + 0.143). By optimizing the diameter of the welding wire and the size of the second welding spot, the size of the second welding spot can be reduced under the condition that the second welding spot has enough connection strength, so that the shielding of the second welding spot on the surface of the substrate is reduced, the influence of the second welding spot on the light absorption efficiency of the substrate is reduced, and the actual use requirement is better met.

An optical fiber comprising a core of quartz glass containing at least germanium, provided at the center of optical fiber, an inside cladding of high diffusion coefficient provided coaxially with the core around the core and an outside cladding of low diffusion coefficient provided around the inside cladding, wherein the core contains germanium in a concentration of about 200% or more of that of the inside cladding to thereby enable connection to an optical fiber of different MFD, such as a single mode optical fiber or an erbium-loaded optical fiber, with low connection loss and with satisfactory connection strength.

The invention discloses a centrifugal pump volute for cavitation suppression and a design method and an installation method thereof, wherein the centrifugal pump volute comprises a volute body, the volute body is provided with grooves, the grooves are annular grooves and radial grooves, and the annular grooves or the radial grooves are formed in the inner side of the volute body; and fluid is accumulated in the grooves, the pressure of the position where leakage vortexes are located is improved, a low-pressure area generated by the leakage vortexes is reduced, and cavitation is restrained on the premise that hydraulic characteristics such as lift efficiency are not reduced basically. According to the design method, the grooves are designed, and the positions, the shapes and the sizes of the grooves are determined. According to the installation method, a shell, a first side plate and a second side plate are mounted according to the design result, the manufacturing quality of the shell, the first side plate and the second side plate can be conveniently controlled, the annular grooves or the radial grooves can be conveniently formed in the second side plate, the positions and the shapes of the grooves can be conveniently controlled, and meanwhile it is ensured that the width and the depth of the grooves meet the design requirement.

The invention discloses a connecting structure for a wall scaffold. The connecting structure for the wall scaffold comprises embedded parts and auxiliary parts, the embedded parts and the auxiliary parts are embedded in a wall, the embedded parts do not protrude from the wall, and the auxiliary parts are provided with connecting rods which can be connected to the scaffold in an overlapping mode. The embedded parts are provided with screw holes, the auxiliary parts are provided with bolts, and the bolts are connected with the screw holes, so that the auxiliary parts are detachably fixed on theembedded parts. The connecting structure has the advantages of high safety performance, fast construction period and good economic benefits. The connecting structure for the wall scaffold is used in the construction field of concrete walls, fair-faced concrete walls and fair-faced fence slabs, and so on.

The invention discloses an anti-air-leakage heat-preservation non-return aluminum titanate lift tube for aluminum alloy low-pressure casting. A mounting plate is coaxially and fixedly arranged at thetop end of an aluminum titanate tube, the bottom end of the aluminum titanate tube is coaxially and fixedly provided with an aluminum titanate filter disc, the top of the aluminum titanate filter discis coaxially provided with a groove, the groove wall of the groove is provided with side holes, bottom holes are formed in the bottom of the groove, the side holes and the bottom holes make the groove communicate with the outer side of the aluminum titanate filter disc, a matched non-return piece is arranged in the groove, the non-return piece moves up and down in the groove and is provided withthrough holes, and projections, which is perpendicular to the bottom of the groove, of the through holes are staggered from the bottom holes. According to the structure mentioned above, the anti-air-leakage heat-preservation non-return aluminum titanate lift tube for the aluminum alloy low-pressure casting has the beneficial effects that in the process of ascending into the lift tube, the aluminumalloy melt enters the aluminum titanate tube through the bottom holes of the groove and the through holes of the non-return piece, so that skimming and filtering of the aluminum alloy melt can be achieved; and the aluminum alloy melt can enter the aluminum titanate tube stably, and thus quality of aluminum alloy low-pressure casting products is improved.

The invention discloses a microsurgery sectioning knife and blade, and the microsurgery sectioning knife comprises a front cutting edge and a tail blade fixing part, the front cutting edge and the tail blade fixing part are an integrated metal part, the cutting edge and the back of the blade fixing part are flat and straight, the thickness a is 0.2 mm-0. 5 mm, the cutting edge comprises a knife point and a cutting edge opening, and the knife point is an acute angle. The front end of the cutting edge is an arc-shaped cutting edge opening and is gradually transited from the arc-shaped cutting edge opening to the straight cutting edge opening from the tool nose, the length b of the edge, where the tool back is located, corresponding to the arc-shaped cutting edge opening is 0.5 mm-1 mm, and the length c of the edge, where the tool back is located, corresponding to the straight cutting edge opening is 1 mm-3 mm. The included angle alpha between the edge where the knife back corresponding to the arc-shaped knife edge is located and the upper edge of the straight knife edge ranges from 5 degrees to 10 degrees, and the included angle beta between the edging grinding face of the knife edgeand the opposite face of the knife edge ranges from 15 degrees to 20 degrees. When the sectioning knife is used under a microscope, better visibility is achieved, the puncture force passing through atest knife point is smaller than 0.4 N, soft tissue can be easily punctured, and it is guaranteed that a puncture point is accurately positioned and reverse picking type sectioning is smoothly carried out.

The invention discloses a fixing device for an armrest of an automobile seat and the automobile seat, the fixing device comprises a fixing protruding part connected to the lower portion of the armrest and fixing concave parts arranged on the two sides of a cushion of the automobile seat, and the fixing concave parts are close to a seat back of the automobile seat. The fixing protruding part can be inserted into the fixing concave part; one of the fixing protruding part and the fixing concave part is provided with a locking protrusion, the other one of the fixing protruding part and the fixing concave part is provided with a locking notch, and the locking protrusion can be clamped into the locking notch, so that the fixing protruding part can be fixed into the fixing concave part. According to the fixing device, enough connecting strength is provided for the armrest and the automobile seat, and assembling is convenient.

The invention specifically discloses a connection joint structure of a prefabricated sandwich side wall and a prefabricated laminated bottom plate and a construction method of the connection joint structure of the prefabricated sandwich side wall and the prefabricated laminated bottom plate. The connection joint structure comprises the prefabricated sandwich side wall arranged vertically and the prefabricated laminated bottom plate arranged horizontally below the prefabricated sandwich side wall, the prefabricated sandwich side wall includes an internal prefabricated plate and an external prefabricated plate, the internal prefabricated plate and the external prefabricated plate are connected through an erection truss between the internal prefabricated plate and the external prefabricated plate, and a horizontal water-stop steel plate is arranged in the middle of the bottom of the prefabricated sandwich side wall; embedded and extending U-shaped steel bars are arranged at both ends of the prefabricated laminated sandwich side wall, the U-shaped steel bars are arranged in a staggered mode in the height direction, and vertical stressed steel bars are arranged on the inner sides of theU-shaped steel bars; the prefabricated laminated bottom plate is a single-layer prefabricated plate, erection bars are arranged on the upper part of the prefabricated laminated bottom plate, and externally-extended L-shaped steel bars are arranged near the end parts of both ends of the side wall; and L-shaped reinforcing ribs are arranged at the corners of a joint of the prefabricated sandwich side wall and the prefabricated laminated bottom plate. The joint with a simple structure, reliable connection, reasonable stress and simple and convenient construction is provided, so that the overallstress performance of the connection joint structure is more superior.