66results about How to "Improve the firmness of the connection" patented technology

The invention relates to the field of assembly concrete buildings, in particular to a modified concrete superposition board floor structure with shear keys and a connection method. The produced floor can serve as a floor applied in the assembly concrete buildings. An original superposition board floor comprises cast-in-situ layers and precast bottom boards which are arranged up and down, the shear keys are arranged on the precast bottom boards, the precast bottom boards are connected with the cast-in-situ layers through the shear keys, and a firm combination structure is formed. Two lateral faces of the original precast bottom boards are changed into slopes, and the contact area between the original precast bottom boards and the cast-in-situ layers is increased; four lateral faces of the precast bottom boards are made to be rough surfaces, and the friction between the precast bottom boards and the cast-in-situ layers is increased; lap joint rebar grooves are additionally formed in two sides of each precast bottom board, and lap joint rebars are arranged in the lap joint rebar grooves, so that equivalent transfer of tensile stress of the rebars at the bottoms of the boards is achieved. Meanwhile, steel rods with threads at the ends are embedded in a precast beam and matched with fixing steel boards and fixing nuts for use, and the superposition board floor structure is connected to the beam. Firm connection between superposition board floor structures as well as between the superposition board floor structure and the beam is achieved effectively through the above measures.

The invention provides a valve body and bonnet connection torsion dispensing assembly machine, belongs to the technical field of valve production devices and solves problems that the existing valve body and bonnet connection assembly machine cannot achieve automatic gluing. The valve body and bonnet connection torsion dispensing assembly machine comprises a worktable and a support fixed on the worktable, wherein a lower die body is arranged on the worktable, an upper die body is arranged right above the lower die body and is fixed on the lower portion of a torsion control mechanism used for controlling rotating of the upper die body, a lifting cylinder is fixedly connected onto the support, a lifting sliding table is fixedly connected at the end of a piston rod of the lifting cylinder, the torsion control mechanism is fixed on the lifting sliding table, and a dispensing mechanism is arranged on the side portion of the lower die body. The valve body and bonnet connection torsion dispensing assembly machine has the advantages of having double functions of valve bonnet screwing and gluing, being high in automation and work efficiency and the like.

The invention discloses a method for manufacturing an embedded bolt sleeve at the root of a fan blade by a pultrusion process. The method comprises preparation of an embedded bolt sleeve precast block, and molding of the embedded bolt sleeve precast block and a fan blade. The embedded bolt sleeve precast block is fabricated by the pultrusion process, the pultrusion process has the advantages of continuity, high industrial degree and high production efficiency, and the fabricated embedded bolt sleeve has the advantages of stable quality, high size precision, large strength and the like, and is suitable for the fan blade with large load at the root and with connection to a large quantity of bolts. The problems of incontinuity in laying, interlayer asymmetry, high probability of wrinkles and air bubbles and the like caused by manual laying and pasting can be overcome.

The invention discloses a high-voltage cable oscillatory wave partial discharge test system which comprises a high-voltage DC power supply, a high-voltage switch, a high-voltage reactor, a capacitivevoltage divider, a data acquisition analysis unit and an partial discharge coupling unit. The bottom of the high-voltage reactor is provided with a base. The top of the high-voltage reactor is provided with a clamping seat. The base includes a substrate base fixed to the high-voltage reactor. Two symmetrically arranged annular fixing seats are arranged below the substrate base. Both ends of each annular fixing seat are inclined structures. A stopping plate is arranged between the annular fixing seats. Positioning holes are arranged on both end faces of the stopping plate. A telescopic rod is arranged between the stopping plate and the substrate base. A spring sleeves the telescopic rod. The high-voltage cable oscillatory wave partial discharge test system is able to reduce potential safetyhazards and improve installation efficiency.

The invention discloses iron ore special concrete and a preparation method thereof. The invention discloses iron ore special concrete, belongs to the technical field of concrete preparation, and solves the problem that the wear resistance of conventional concrete in the prior art cannot meet the use requirements of special environments The iron ore special concrete is characterized by comprising the following components in parts by weight: 900 to 1160 parts of iron ore coarse aggregate, 600 to 780 parts of ceramic fine aggregate; 135 to 165 parts of water; 310 to 380 parts of cement; 230 to 285 parts of a mineral admixture; and 8.5 to 10.2 parts of a water reducing agent. According to the technical scheme, the iron ore has stronger wear resistance and strength; the strength and the wear resistance of the concrete can be effectively improved when the concrete is used as main aggregate of the concrete; the surface area of the ceramic fine aggregate is larger, the ceramic fine aggregate is more strongly combined with a cementing material, and the ceramic fine aggregate is distributed in gaps of the coarse aggregate, so that the ceramic fine aggregate is more tightly bonded with the iron ore coarse aggregate by virtue of the cementing material, and finally, the concrete has better stability and wear resistance.

The invention discloses an anti-skid cleaning robot with the balancing ability for classifying garbage, and relates to the technical field of robots. The robot includes a robot body, an anti-skid roller and a connection rod. Exhaust fans are installed on the side wall in the robot body, the bottom in the robot body is provided with a hydraulic cylinder, the output end of the hydraulic cylinder isprovided with a hydraulic rod, the inner wall of the top of a first garbage collection box is provided with a baffle, the anti-skid roller is fixedly installed at the tail end of the robot body, and the inner wall of a cleaning support plate is fixedly welded with an elastic sleeve, a screw at the tail end of an elastic column is connected with a brush roller, and the tail end of the brush rolleris fixedly bonded with a female hook and loop fastener. According to the anti-skid cleaning robot with the balancing ability for classifying garbage, the exhaust fans are arranged in the robot at equal angles, several suction holes are formed in the robot body, the robot can absorb garbage on the smooth ground in an all-round way, and the cleaning efficiency of the robot body is more excellent.

The invention discloses a bathtub with a built-in multi-functional massage pillow. The bathtub with the built-in multi-functional massage pillow comprises a bathtub body and the massage pillow, wherein at least one bathtub through hole is formed in the bathtub body; the massage pillow comprises a drive element, at least one rotating shaft and at least one massage element, the drive element drives the massage element to rotate through the rotating shaft, so as to achieve a massage function; the drive element and the massage element are arranged outside and inside the bathtub body respectively, and each rotating shaft penetrates the bathtub through hole in a sealed manner to drive one massage element to rotate. The bathtub has the beneficial effects that electrified electric elements are arranged outside the bathtub body, separation of water and electricity is guaranteed, and accordingly, safety of the bathtub is improved. The invention further provides an assembly method of the bathtub with the built-in multi-functional massage pillow.

The invention relates to a shell assembly, a manufacturing method thereof and electronic equipment. The shell assembly comprises a ceramic matrix, an adhesion promoter layer and a fiber reinforced resin layer, wherein the fiber reinforced resin layer is connected with the ceramic matrix through the adhesion promoter layer. The fiber reinforced resin layer is arranged on the ceramic matrix, the overall density of the shell assembly can be reduced, for example, the overall relative density of the zirconia ceramic matrix shell can be reduced to 4.0, and light weight is achieved. In addition, the cost can be reduced by partially replacing the shell assembly with the fiber reinforced resin layer. Meanwhile, the fiber reinforced resin layer is good in toughness, so that the overall toughness of the shell assembly can be improved, the thickness of the shell assembly can be reduced under the condition that the strength is met, and lightening and thinning are achieved. Besides, according to the shell assembly, the fiber reinforced resin layer and the ceramic matrix are connected through the adhesion promoter layer, the connection firmness degree between the fiber reinforced resin layer and the ceramic matrix is greatly improved, and the falling phenomenon is avoided.

A combined brake disc comprises a brake disc base and friction discs, and the friction discs are mounted on one side or two sides of the brake disc base. A connection surface of the friction discs andthe brake disc base is provided with first limiting structures and second limiting structures; the first limiting structures are arranged peripherally along the combined brake disc to prevent relative parallel sliding, on the connection surface, of the friction discs relative to the brake disc base; the second limiting structures are arranged radially along the combined brake disc to prevent relative rotation, o the connection surface, of the friction discs relative to the brake disc base. By the first limiting structures and the second limiting structures, a stress surface of the brake discis improved, parallel sliding and peripheral sliding of the friction disc are effectively limited, and the problem of influences on braking effects and service life of the brake disc due to horizontaldisplacement of the friction discs relative to the brake disc base and relative rotation of the friction discs along the periphery of the brake disc base under braking friction and brake disc rotation action in a vehicle braking process in the prior art is solved.

The invention relates to the technical field of monitoring, in particular to a municipal infrastructure intelligent monitoring system which comprises a supporting plate, mounting plates are arranged on the two sides of one end of the supporting plate, a panel is arranged at the other end of the supporting plate, a butt-joint plate is transversely arranged on one side of the front face of the panel, and a mounting lug is movably arranged in the middle of the butt-joint plate. A monitoring equipment body is movably arranged in the middle of the mounting lug and comprises a monitoring system, a first camera and a second camera are arranged on the two sides of the front face of the monitoring equipment body, a second motor is arranged in the middle of the front face of the monitoring equipment body, a scraper is arranged at the output end of the second motor, and a soft rubber strip is arranged on the inner wall of the scraper. According to the invention, the output end of the second motor can be connected with the scraper blade, and the soft rubber strip arranged on the inner wall of the scraper blade can rotatably wipe the surfaces of the first camera and the second camera, so that the cleanliness of the whole cameras is guaranteed, and the phenomenon that the lens is blurred in snowy weather is avoided.

The invention provides a denture abutment. The denture abutment comprises a denture main body, wherein an abutment body for supporting the denture main body is arranged in the denture main body; the abutment body, from top to bottom, comprises a support part, a connection part, an insertion part and a base; the support part, the connection part and the insertion part are molded integrally; the base is screwed into the bottom end of a splicing part through a screw rod; the support part, the connection part, the insertion part and the base are arranged on the same axial line; the support part isof metal cylinder; a first threaded part is arranged on the side part of the support part; the support part is inserted into a mounting groove formed in the bottom of the denture main body and is fixed through the first threaded part; the connection part comprises an arc convex ring part and an arc groove part which are continuously arranged. The abutment body of the denture abutment disclosed bythe invention, from top to bottom, comprises the support part, the connection part and the insertion part; the length is medium, the connection is fixed and the support is stable; because of the arcconvex ring part and the arc groove part of the connection part, the contact area of the abutment body and the denture main body can be increased, and the connection fastness extent is enhanced.

Disclosed is a pipe shaft. According to the technical scheme, the pipe shaft is characterized by comprising a pipe body. The pipe body comprises an inlet and an outlet, wherein threads are formed in the outlet. A blocking portion is arranged on the pipe body, and a sealing ring is arranged on the side, close to the outlet, of the blocking portion. The pipe shaft solves the problem that due to the fact that bell-and-spigot connection is adopted by an existing pipe shaft and a pipe, looseness is caused.

The invention relates to a ceramic composite steel pipe. The ceramic composite steel pipe comprises a ceramic lining, a transition layer and a stainless steel outer pipe. The ceramic lining is fixedlyconnected with the stainless steel outer pipe through the transition layer generated by reaction with a thermit. Multiple convex slots are fixedly formed on the inner wall of the stainless steel outer pipe. One end of each convex slot extends out of a corresponding side edge of the stainless steel outer pipe. The other end of each convex slot is located inside the stainless steel outer pipe, anda connection groove corresponding to a corresponding convex slot is formed between each convex slot and the corresponding side edge of the stainless steel outer pipe. Heat-exchange area between the steel pipe and the transition layer can be effectively increased by the convex slots; and meanwhile, improvement of firmness degree between the ceramic lining and an outer steel pipe is benefited by various fixing holes arranged in the convex slots. When the protruding convex slots and the internally-arranged connection grooves are used cooperatively, the location speed and connection firmness degree between each steel pipe can be further improved. For some non-standard components which need direction changing, wear-resistant rubber is fixed to the protruding convex slots; abrasion caused by inner cracks at steel pipe joints can be effectively avoided; and thus effective coverage of the wear-resistant lining is improved.

The invention discloses a building energy efficiency luminescent bearing plate. The bearing plate comprises a bottom plate, wherein bases are arranged at four corners at the lower end of the bottom plate; a mounting groove is formed in each base; non-slipping lines are arranged in the mounting groove; a storage battery is mounted on the bottom plate; supporting rods are mounted at the two ends ofthe storage battery; a fixed plate is mounted above each supporting plate; expansion rods are mounted on the two sides of the storage battery; a universal ball connector is mounted at the top of eachexpansion rod; an LED light strip is mounted at the upper end of the universal ball connector; the upper end of the LED light strip is connected with a solar panel; a non-slipping layer is arranged onthe fixed plate; an LED light is mounted on the fixed plate; transparent tempered glass is mounted on the surface of the LED light; a bulb is arranged below the transparent tempered glass; the lowerend of the bulb is electrically connected with a photosensitive resistor. The bearing plate solves the problems that the existing bearing plate is poor in bearing capacity, low in application range, does not have light supporting, and is not firm in connection.

The invention discloses a continuous tensile detector of an enamelled wire in saline water and belongs to the technical field of enameled wire tensile detection. The detector is technically characterized by comprising a bottom plate and a saline water tank arranged on the bottom plate, and a base is arranged on the portion, at the side edge of the saline water tank, on the bottom plate in the vertical direction; a supporting plate is arranged at the upper end of the side wall, opposite to the saline water tank, of the base; a vertical transmission screw rod is arranged between the supporting plate and the bottom plate in the vertical direction; the vertical transmission screw rod on the upper side of the saline water tank is in threaded connection with a bearing plate in the horizontal direction; supports are arranged at the near ends of the lower end face of the bearing plate along the two ends of the length direction respectively; the supports are connected with a horizontal screw rod through bearings; a movable arm is in threaded connection with the horizontal screw rod, and a fixed arm matched with the movable arm is fixed at the bottom of the bearing plate. The continuous tensile detector of the enamelled wire in the saline water is convenient to use and accurate in detection and is used for stretching and detecting the enamelled wire.

The invention discloses a high-load-bearing sliding rail for a drawer type three-dimensional material warehouse, and belongs to the technical field of material storage.The high-load-bearing sliding rail for the drawer type three-dimensional material warehouse comprises a base, a stand column is fixedly connected to the upper end of the base, a plurality of sliding barrels are fixedly connected to the two sides of the stand column, and the sliding barrels on the two sides of the stand column are horizontally aligned; the sliding barrels are arranged at equal intervals in the vertical direction, the inner walls of the sliding barrels are hollow, one ends of the sliding barrels are open, and the openings of the sliding barrels on the two sides of the stand column face opposite directions, so that the bearing capacity of the sliding rails of the drawer type three-dimensional material warehouse can be greatly improved; and through lengthening a bracket, bracket pressing wheels are arranged on the two sides of the bracket, so that when materials on the bracket are drawn out of the drawer and concentrated at the outer end of the drawer, the bracket pressing wheels can press the tail end of the bracket, the bracket is prevented from tilting, the gravity center balancing effect is achieved, the upper end of the sliding rod is also matched with sliding rod pressing wheel, double guarantee is achieved, and the bearing capacity of the sliding rail is effectively improved.