370results about How to "No sliding" patented technology

The invention relates to a string beam, which comprises a rigid beam, a bracing cable and a plurality of bracing bars, the upper ends of the bracing bars are hinged with the rigid beam, the lower ends of the bracing bars are fixedly connected with the bracing cable through rope clamping devices, the both ends of the bracing cable after being stretched are respectively and fixedly connected with the both ends of the rigid beam, the bracing cable is formed into broken lines in an axle symmetrical way, the adjacent two broken lines form a broken line angle, the various turning points of the broken lines are positioned on the identical parabola, each bracing bar is respectively positioned on the angle bisector of the broken line angle. The string beam of the invention can avoid the loose bracing cable generated by the slipping of a pre-stressed rope at the position of the rope clamping device when being used, and the potential safety hazard is eliminated.

The invention discloses a novel method for designing a child shoe tree ground pattern based on dynamic and static foot models of children. The method comprises the steps of (1) collecting the dynamic and static foot models of the children; (2) extracting sole images from the dynamic and static foot models; (3) determining key points of dynamic and static sole images; (4) measuring the length and width sizes and angles of key portions of the dynamic and static sole images; (5) converting dynamic and static foot model data into shoe tree ground pattern data; (6) determining the shoe tree ground pattern data; (7) drawing shoe tree ground pattern figures. The method has the advantages of ingenious conception, accurate data and good repeatability, the dynamic and static foot model data of a 1: 1 ratio are acquired respectively through a pressure sensor and a three-dimensional laser scanner, and a conversion model for the dynamic and static foot model data and the shoe tree ground pattern data is established based on the difference between the dynamic and static foot models and the rule of the difference, so that the child shoe tree ground pattern capable of better meeting the foot development law of the children is designed, and shoes for the children made according to the child shoe tree ground pattern have higher comfort level.

The invention discloses a vacuum negative pressure adsorption feeding device, and belongs to the technical field of feeding devices. The vacuum negative pressure adsorption feeding device comprises aconveying frame, a conveying belt, a driving mechanism and a negative pressure mechanism, wherein the conveying belt moves around the conveying frame, and the driving mechanism and the negative pressure mechanism are connected to the conveying frame. The driving mechanism is used for driving the conveying belt to move. The conveying frame is internally provided with a vacuum cavity. The negative pressure mechanism communicates with the vacuum cavity. A plurality of strip-shaped grooves arranged side by side are formed in the surface, used for adsorbing workpieces, of the conveying frame and extend in the moving direction of the conveying belt. The strip-shaped grooves are internally provided with a plurality of through holes communicating with the vacuum cavity. The conveying belt is provided with a plurality of rows of adsorption holes in the moving direction of the conveying belt. Each row of adsorption holes and each strip-shaped groove correspond to each other one by one. Accordingto the vacuum negative pressure adsorption feeding device, negative pressure is exerted on the vacuum cavity through the negative pressure mechanism, even negative pressure is generated in the strip-shaped grooves through the through holes communicating with the vacuum cavity, and even adsorption force is generated corresponding to each row of adsorption holes, so that the workpieces is always affected by the adsorption force in the moving process.

The invention belongs to the technical field of building materials, and provides a novel modified asphalt waterproof coiled material. The novel modified asphalt waterproof coiled material comprises modified asphalt coating layers, a tire base layer and an isolation layer, wherein the material of the modified asphalt coating layer is modified asphalt, and the modified asphalt is prepared from the following components in parts by weight: 5-10 parts of 10# asphalt, 40-50 parts of 90# or 100# asphalt, 6-12 parts of softening oil, 4-6 parts of rubber powder, 3-5 parts of SBS, 2-4 parts of high density polyethylene, 0.2-0.6 part of triallyl isotactic cyanurate, 0.6-2 parts of dicumyl peroxide and 10-20 parts of filler. A preparation method comprises the following steps that firstly the modifiedasphalt is prepared by mixing materials and grinding twice; the modified asphalt is then coated on the upper surface and the lower surface of the tire base layer to obtain the tire base layer with themodified asphalt coating layers on both sides; and an isolation film is then coated to obtain the isolation layer, and forming by cooling is carried out to obtain the novel modified asphalt waterproof coiled material. The novel modified asphalt waterproof coiled material and the preparation method solve the problem of defects in high and low temperature resistance of elastomer modified asphalt and plastic modified asphalt waterproof coiled materials in the prior art.

The invention discloses a sawmill clamping feeding mechanism which belongs to the technical field of wood processing machine, wherein, a wood clamping device (5) is provided with a clamping head (8) which is used for clamping wood processed (4), a plurality of bulges are arranged on the contact surface of the clamping head (8) and the wood processed. By adopting the technical proposal, the sawmill clamping feeding mechanism has the advantages that the clamping is more reliable and the wood processed is uneasy to loose and to cause slide. The stable and reliable operation of the production of sawing and processing can be guaranteed, and the safety is better; thus realizing the automation of clamping. The precision of the clamping actions and the clamping time are higher, thereby reducing the intensity of labor of operation workers.

The invention provides a polymer dispersed liquid crystal (PDLC) light valve which is composed of an upper substrate and a lower substrate which are made of a flexible material as well as a PDLC material layer which is arranged between the upper substrate and the lower substrate by press fitting. The press fit surfaces of the lower substrate and the upper substrate are respectively plated with a lower ITO electrode and an upper ITO electrode, the surface of the lower ITO electrode is coated and cured with an insulating layer, and the PDLC material layer is coated on the insulating layer; and the surface of the upper substrate is also cured with a photoresist gap filler for controlling thickness of a box. The invention also provides a fabrication method of the polymer dispersed liquid crystal light valve. In the method, the PDLC light valve is made of flexible substrates, which solves the problem of fragmentation of the substrates, greatly reduces the thickness of the light valve, and ensures uniformity and consistency of the thickness of a light valve box.

The invention discloses an epoxy non-cured rubber asphalt waterproof coating and a preparation method thereof and belongs to the field of coatings. The coating comprises a component A and a componentB, wherein the component A is prepared from asphalt, plasticizers, polymer modifiers and epoxy resin; the component B is prepared from epoxy curing agents. The problem that the non-cured rubber asphalt waterproof coating can be constructed after the coating is heated can be solved; the coating is energy-saving and environmentally friendly; the safety of constructors is ensured; the construction operation is simplified; the application range of the product is expanded; the coating is excellent in construction performance, does not need to be heated in the whole construction process, is excellent in high-temperature performance, can achieve obstacle-free construction under high temperature and low temperature, and is high in flexibility, high in elongation rate, excellent in creep property,high in self-healing capability, high in water channeling resistance and high in adhesion performance.

The invention discloses an automatic fish feeding device capable of being adjusted and controlled. The device comprises a support (4), a rotary plate (6) and a water dripping device (7), wherein the support (4) is fixedly connected with a fish tank body, the rotary plate (6) is connected with the support (4) through a rotary shaft (5), and the water dripping device (7) is arranged on the upper side of the rotary plate (6). Water containing boxes (13) are evenly distributed on the outer ring of the rotary plate (6), a fish feed bin (14) is arranged on the inner ring of the rotary plate (6), a feeding inlet (9) and a discharging opening (12) are formed in the fish feed bin (14), and a feed baffle (8) is arranged at the feeding inlet (9). The device has the advantages that the device is free of electric power, safe, reliable, simple in structure, good in quality and low in cost, the feeding frequency is adjusted according to the water dripping speed, and the single-time feeding amount is adjusted according to the size of the discharging opening.

The invention discloses an underwater umbilical cable terminal base plate device which comprises a slab foundation, a supporting platform installed on the slab foundation, rigid arms, a rear limiting block, a front limiting block and a protective cover arranged on the supporting platform. The rigid arms, the rear limiting block and the front limiting block are installed on the slab foundation. An umbilical cable terminal device support is arranged on the supporting platform, the two sides of the slab foundation are respectively provided with a pin shaft supporting base, and two supporting base lifting lugs pivoted to the rigid arms through pin shafts are arranged on the pin shaft supporting bases. Each rigid arm is mainly of a U-shaped pipe structure. The upper portion and the lower portion of the U-shaped pipe are provided with lifting lugs respectively. The front limiting block is arranged at the front end of the slab foundation, and the rear limiting block is arranged at the rear end of the slab foundation. The underwater umbilical cable terminal base plate device and umbilical cables can be laid and installed together, and operations such as underwater complex abutting connection and locking are avoided. In addition, the lower umbilical cable is prevented from being excessively bent, and the requirement for umbilical cable installation bent radius is met; an umbilical cable terminal can be prevented from being impacted and damaged by fallen objects, and the umbilical cable terminal device is effectively protected.

The invention discloses a movable telescopic bus and a subway handrail, which comprises a rack straight rail and a brake box, wherein the rack straight rail is welded on the front and rear walls of the subway car, a slideway is arranged at the upper end of the rack straight rail, and a partition plate arranged horizontally is welded in the brake box. The utility model has the advantages that whenpassengers of different heights need different handrails, the handrails can be moved upward by pushing the handrails upward, and the handrails can be pulled downward by pressing the operating block; When the position of the handrail in the carriage is unreasonable, slightly push the handrail upward and pull the handrail to both sides, so that the position of the handrail can be moved, the positionof the handrail is more reasonable, and the handrail is convenient for passengers to use; When no one is using the armrest, the slight contact between the inner and outer friction plates prevents thebrake box from sliding relative to the rack rail. When the passenger pulls the armrest, the greater the downward pulling force on the armrest, the tighter the inner and outer friction plates are, andthe greater the frictional force is, so as to ensure that the armrest does not slip unnecessarily.

The invention discloses a backlight assembly which comprises a back board, frames and connecting pieces. A reflecting piece, a backlight LED light source, an acrylic light guide plate (PMMA) and an optical membrane are sequentially arranged on the back board from bottom to top. The back board is made of tempered glass, and the section of the back board is arc; the frames are made of aluminum alloy and comprise horizontal frames and vertical frames. The horizontal frames are provided with U-shaped grooves matched with the horizontal edges of the back board, the vertical frames are provided with U-shaped grooves matched with the vertical edges of the back board, and the back board is mounted in a quadrilateral U-shaped groove framework formed by the two horizontal frames and the two vertical frames. The horizontal frames and the vertical frames are connected through the connecting pieces. The backlight assembly has the advantages of a steel plate backlight assembly and a plastic backlight assembly, the process is simple, cost is low, the back board is high in hardness, and the cost performance is high; the backlight assembly is simple in structure, convenient to assemble, good in universality and capable of being widely applied to liquid crystal displayers and liquid crystal television products, especially curved-surface liquid crystal displayers and curved-surface liquid crystal television products.

The invention provides a planting device capable of punching holes simultaneously based on landscape gardens, relates to the technical field of nursery stock planting, and aims to solve the problems that when an existing nursery stock transplanting device is in use, the depth of transplanted nursery stocks and soil cannot be controlled, the amount of transplanted soil cannot be controlled according to the sizes of the nursery stocks, and too much soil easily falls off in the moving process to cause easy breakage of roots of the nursery stock. The planting device comprises a main body and a moving part, wherein the main body is of an L-shaped structure, the section of the main body is of a cylindrical structure, and the bottom of the main body is of a conical structure; and a limiting platewith a cylindrical plate-shaped structure is arranged in the middle of the main body. The main body is used for driving the device to move, so that the device can be moved to a proper position for use, and when the device needs to be used for transplanting and planting, the baffles at different positions can be adjusted to move, so that the baffles at different positions can be pulled out.

The invention, which belongs to the technical field of mechanical experiment devices, discloses a symmetrical double-shear interface adhesion test device comprising a ball hinge connecting rod, screwrods, a backing plate, plain concrete, a horizontal installation device, an upper bearing plate and a lower bearing plate. Four symmetrical upper bearing plate smooth circular holes are formed in fourcorners of the upper bearing plate; and four lower bearing plate inner threaded holes are formed in the four corners of the lower bearing plate, wherein the holes and the central axis of the upper bearing plate are arranged coaxially. The upper bearing plate and the lower bearing plate are connected with the corresponding lower bearing plate inner threaded holes through the upper bearing plate smooth circular holes by screw rods. The screw rods are provided with upper nuts and lower nuts. According to the symmetrical double-shear interface adhesion test device, centering of a test piece can be controlled; the influence of external forces in the installation process can be avoided; the test accuracy can be improved; the test process is controlled; and the test efficiency can be improved and the convenient test process can be provided.

The invention discloses a process method for producing a tool through a caulking groove substrate. The process method comprises the following steps of (1) substrate preparing, (2) substrate cleaning,(3) high-speed steel bar embedding, (4) vacuum welding, (5) tempering, (6) straightening, (7) accurate grinding, (8) blade planing, (9) long blank cutting, (10) blade accurate grinding, (11) tool cutting, (12), perforating, (13), straightening and (14) cleaning, rust prevention and finished product packaging. By means of the process, the machining steps and process are shortened, the machining difficulty is reduced, the machining efficiency is improved, the machining cost is saved, and the machining yield and the stability of quality and performance are improved.

The invention relates to an upper chord inspection vehicle which comprises a horizontal truss, walking mechanisms and vertical trusses. Two groups of vertical trusses are symmetrically arranged at two ends of the horizontal truss, and two groups of walking mechanisms are symmetrically arranged at two ends of the horizontal truss. Every group of walking mechanism comprises a main supporting mechanism, a walking driving mechanism, a walking beam, an addition part catching device and a guiding supporting wheel set for walking on a bridge, wherein the main supporting mechanism is rotatably connected with the middle of the walking driving mechanism through a horizontal truss supporting shaft, the guiding supporting wheel set is arranged below the walking beam, and the two groups of addition part catching devices are arranged below the walking beam. The upper chord inspection vehicle has the advantages that the technical problem that an existing bridge detection operation vehicle is not suitable for walking on an upper chord above the wave-shaped bridge and is simultaneously poor in stability is solved, the influence on bridge deck traffic is avoided simultaneously, and a detection path can cover a whole bridge body.

The invention discloses high-efficiency packing for a counter flow cooling tower. The packing is combined by a plurality of waveform packing sheets, and a corresponding thermal mass exchange zone is formed on each packing sheet, wherein the packing sheets are of ladder shaped waveform, and are crossed and overlapped to form a packing body; and a fluid channel is formed among waveforms of the packing sheets. By the high-efficiency packing, the relationship between the specific surface area of the packing and the resistance is optimized, and assembly blocks are adhered by glue, so the packing is convenient to assemble.

Provided is a longitudinal drawing device capable of reducing the occurrence of transfer damage, scratches, or the like on a thermoplastic film when drawn longitudinally. Specifically, a longitudinaldrawing device (5) draws a thermoplastic film (F), heated by heating rolls (13), by means of a difference in peripheral speed between a plurality of low-speed driving rolls (8) and a plurality of high-speed driving rolls (9). The plurality of low-speed driving rolls (8) and the plurality of high-speed driving rolls (9) are respectively composed of suction rolls having low-speed-side suction holes(8b) and high-speed-side suction holes (9b) which are a plurality of suction holes in conveyance surfaces thereof for conveying the thermoplastic film (F). A plurality of the heating rolls (13) are provided between adjacent low-speed driving rolls (8) and high-speed driving rolls (9). Each of the plurality of heating rolls (13) is provided with a following electric motor (15) serving as an actuator. Each of the plurality of heating rolls (13) is configured to be independently rotationally drivable. The output torque of each of the following electric motors (15) is controlled so as to coincidewith a target value set for each of the following electric motors (15).