11results about How to "Guaranteed wall thickness" patented technology

The invention relates to the technical field of road construction, and provides a prefabricated guardrail and a manufacturing method and mounting method.The prefabricated guardrail comprises a guardrail body and extending steel bars, the bottom of the guardrail body is provided with a rectangular notch and a trapezoidal notch which are communicated with each other, and the rectangular notch is located below the trapezoidal notch; the inclined surface of the trapezoidal notch is matched with the slope surface of the vehicle facing side of the guardrail body; the extending steel bars are embedded in the guardrail body and sequentially penetrate through the trapezoidal notches and the rectangular notches. The prefabricated guardrail provided by the invention is used for solving the connection defect between a prefabricated guardrail and a main beam in the prior art, the rectangular notch and the trapezoidal notch are formed in the bottom of the guardrail body for pouring, so that concrete, the extending reinforcing steel bars and the embedded reinforcing steel bars in the to-be-mounted area can form a whole, and the connection mode is more convenient to use. The problems that the welding quality is poor and the bearing capacity of the connecting position of the prefabricated guardrail is damaged by oxidation and corrosion of the welding position can be solved, and the safety and reliability of the prefabricated guardrail can be improved.

This utility model discloses a funnel-shaped flow-dividing extrusion die, including an upper die and a lower die. The upper die has adjacent small and large die cores on the discharge side. Multiple through-flow holes are provided on the upper die, including a funnel-shaped hole. The inlet size of the funnel-shaped hole is larger than the outlet size. The outlet of the funnel-shaped hole is offset towards the side closer to the small die core, relative to the center of its inlet area. The outlet of the funnel-shaped hole is located between the small and large die cores, and its area partially overlaps with the large die core, while the small die core is outside its outlet area. This utility model uses a funnel-shaped flow-dividing hole between the die cores, with a large inlet and a small outlet, thereby reducing the flow velocity in the middle while ensuring material intake, reducing the pressure on the small die core, protecting it from swaying, and ensuring the profile wall thickness meets requirements.

The invention relates to an embedded bottle opening sealing structure of a plastic inner container carbon fiber winding gas cylinder and a manufacturing method, the embedded bottle opening sealing structure of the plastic inner container carbon fiber winding gas cylinder is characterized in that a plastic inner container bottle opening comprises a bottle opening neck part and a bottle opening mouth part which are coaxially arranged and communicate with each other, and a metal reinforcing part is embedded in the plastic inner container bottle opening; the metal reinforcing piece is arranged on the outer side of the central axis of a bottle opening of the plastic inner container in a surrounding mode and completely wrapped by the bottle opening of the plastic inner container, the metal reinforcing piece and the inner wall of the neck portion of the bottle opening form an annular plastic thin layer, a radial sealing groove is formed in the peripheral face of the bottle valve, and a sealing ring is arranged in the radial sealing groove. The sealing ring is configured to be in mutual sealing contact with the plastic thin layer when the cylinder valve is connected with the internal thread. In conclusion, according to the embedded type bottle opening sealing structure of the plastic inner container carbon fiber winding gas cylinder, the metal reinforcing piece is embedded into the bottle opening of the plastic inner container, and the plastic thin layer is formed by the metal reinforcing piece and the neck of the bottle opening, so that the sealing reliability of the bottle opening of the plastic inner container is improved.

The utility model discloses a kind of heat shrink tube for energy storage field, including pipe body and its corrugated main pipe wall.The main pipe wall is formed by the first, second surface of interval arrangement, forms the alternate distribution of wave crest and wave trough.The setting of wave crest in convex, wave trough in concave, cooperate parallel and mirror image symmetry surface arrangement, both ensure that stress uniformity, and significantly improve bending resistance.Innovative double-layer winding structure (inner tube+outer tube) can realize at least five kinds of functional state: completely coincident state provides maximum mechanical strength;Completely separated state forms high-efficiency heat insulation cavity;Partially superimposed state realizes the balance of strength and flexibility;Specific overlapping state optimizes stress distribution.The design is innovated through structure, while maintaining wall thickness, so that product has excellent mechanical properties, heat insulation effect and working condition adaptability, especially suitable for the reliability requirement strict energy storage application scene.

The utility model discloses a high-ring-stiffness thermal-state winding metal framework structure wall pipe, and aims to solve the problems that a metal net is adopted as a middle layer in a winding pipe in the prior art, the metal net is not easy to shape and is easily extruded by polyolefin of an inner layer and an outer layer, so that the middle layer is eccentric and even leaks outwards. The technical problem is solved through the following technical scheme that the pipe comprises a pipe body inner layer polyolefin layer, a pipe body middle metal belt layer and a pipe body outer layer polyolefin layer which are sequentially arranged from inside to outside, wherein the pipe body mesh metal belt layer is formed by spirally welding metal belts; a rib pipe is spirally wound on the outer side of the middle metal belt layer of the pipe body, and the rib pipe is wrapped by polyolefin on the outer layer of the pipe body. The middle layer is formed by welding the metal belts, the concentricity of the middle layer is ensured by a welding positioning device in actual production, and the wall thickness of polyolefin on the inner layer and the outer layer can be ensured; after welding, a spirally wound framework is also formed at a welding seam, and the inner and outer plastic layers are uniform in wall thickness.

The application discloses an electric core shell and an electric core, and is used for solving the problem that the welding seam between the explosion-proof valves of the existing electric core shell is prone to cracking. The electric core shell comprises a first side wall, a second side wall and an explosion-proof valve. The first side wall and the second side wall are connected and surrounded to form a containing cavity for containing the electric core. The wall thickness of the first side wall is smaller than the wall thickness of the second side wall. The second side wall is provided with a mounting groove penetrating through the second side wall. The explosion-proof valve is arranged in the mounting groove. Therefore, the overall wall thickness of the shell is ensured without affecting the energy density of the electric core. The welding strength between the explosion-proof valve and the shell is improved. The welding seam between the explosion-proof valve and the shell caused by the too small wall thickness of the shell can be effectively avoided.

The invention, which belongs to the technical field of the connector, discloses a vehicle gauge-level connector applied to an automobile headlamp rotation speed regulation motor, comprising a male shell, a female shell, a positioning auxiliary member, a plurality of male terminals and a plurality of female terminals. The male shell is movably connected with the positioning auxiliary part in an inserted mode, the female shell is movably connected with the positioning auxiliary part in an inserted mode, the male terminal is arranged in a cavity formed by the female shell and the positioning auxiliary part, the female terminal is contained in the cavity formed by the male shell and the positioning auxiliary part, and the male terminal is electrically connected with the female terminal. The section of the rear wall of the positioning auxiliary part abuts against the section of the rear wall of the female shell to form the rear wall of the vehicle-gauge-level connector, and the upper wall of the male shell forms the upper wall of the vehicle-gauge-level connector. According to the vehicle gauge level connector, the use strength is guaranteed, and meanwhile the wall thickness, the size and the weight are reduced.

The invention discloses an injection mold hot runner system applied to a polymer pre-filled injector, and relates to the technical field of injection molding, and the injection mold hot runner system comprises a protection assembly used for supporting the whole injection mold hot runner system and supporting required parts; the air cylinder is located in the middle of one side of the protection assembly; the heating temperature sensing junction box is located at one end of the air cylinder and located on one side of the protection assembly; and the protection assembly comprises a protection cover, a splitter plate is arranged in the protection cover, and a protection shell is arranged at the top of the protection cover. The needle valve hot runner system is adopted, the risk of product sprue wire drawing pollution is avoided, and the product quality is improved; a single product is subjected to two-point needle valve glue feeding, so that the wall thickness and concentricity of the product are better ensured, and hidden dangers caused by non-uniform wall thickness are reduced; the optimized splitter plate and hot nozzle structure reduces the risk of black spots of the product to the maximum extent; the needle valve synchronous driving system is lowest in cost; and the needle valve spacing is smaller, so that 0.5 ml of needle cylinders can be produced to the minimum extent.

The invention discloses a large-length-diameter-ratio thin-wall seamless aluminum alloy lining wall thickness uniformity control method which comprises the steps that firstly, an aluminum alloy pipe is clamped on a double-spinning-roller numerical control spinning machine, a pipe blank for closing is prepared through multiple passes in a staggered spinning mode, then the pipe blank is clamped on a clamp of closing spinning equipment after being subjected to annealing treatment, and the aluminum alloy pipe is subjected to high-speed spinning. And the pipe blank extends out of the end face of the clamp, combined track closing-in spinning is adopted till the pipe blank is spun to be in a preset shape, and a lining blank is formed. And the lining blank is subjected to heat treatment, finally, the lining blank subjected to heat treatment is machined, and the formed aluminum alloy lining is obtained. According to the method, a multi-pass rolling spinning method is adopted for preparing the closing-in pipe blank, a combined track is adopted for closing-in spinning, the wall thickness is reduced through the technology combining turning and milling and mainly adopting milling, and high-precision preparation of the large-length-diameter-ratio thin-wall seamless aluminum alloy lining is achieved.