10results about How to "Uniform strength" patented technology

The invention discloses C200 ultra-high performance concrete which comprises the following components: a cementing material, fine aggregate, a polycarboxylic acid water reducer, steel fibers, carbon fibers and water, the cementing material is prepared from the following components in parts by weight: 64 to 68 parts of Portland cement, 10 parts of fly ash microbeads, 14 to 16 parts of silica fume and 6 to 10 parts of carbide slag; the addition amount of the polycarboxylic acid water reducer is 1.5-1.7% of the total weight of the cementing material; the mixing amount of the steel fibers is 2.0-3.0% of the total volume of the concrete, and the mixing amount of the carbon fibers is 0.3-1.0% of the total volume of the concrete; the water-binder ratio of the concrete is 0.14 to 0.18; the weight ratio of the cementing material to the fine aggregate is (0.9-1.1): 1. Through the synergistic effect of excitation of the high-activity carbide slag, hybrid reinforcement of the steel fiber and the recycled carbon fiber and gradation of the aggregate, the 7d strength which is larger than or equal to 200 MPa is successfully prepared, the concrete further has excellent toughness which is difficult to achieve by single steel fiber ultra-high performance concrete, and unification of ultra-high strength and ultra-high toughness is achieved.

The utility model discloses an extrusion device convenient for uniform stress, which belongs to the technical field of plate extrusion, and comprises a placing plate, four corners of the placing plate are respectively and fixedly connected with a first electric push rod, the top of each first electric push rod is fixedly connected with a connecting block, and a linkage plate is fixedly connected among the four connecting blocks. According to the extrusion device facilitating uniform stress, a first electric push rod can be started to drive a connecting block and a linkage plate to press downwards, at the moment, the linkage plate can push a telescopic rod, a buffer spring and an extrusion plate at the bottom to extrude an integrated wallboard, and at the moment, the extrusion plate can extrude the telescopic rod and the buffer spring; the force applied by the extrusion plate to the integrated wallboard is uniformly distributed under the elastic action of the buffer spring, and the situation that local stress of the wallboard is too large or too small in the extrusion process is avoided, so that it is guaranteed that the density and strength of the wallboard are uniform and consistent, and the product quality is improved.

The utility model discloses a xenon lamp aging testing machine, which comprises a case, an aging structure and a heat dissipation structure, the aging structure is arranged on the case, the heat dissipation structure is arranged on the case, the aging structure comprises an irradiation unit, a rotating unit and a heating unit, the irradiation unit is fixedly arranged on the side wall of the case, and the rotating unit is fixedly arranged on the side wall of the case. The rotating unit is arranged at the bottom of the case and located in front of the irradiation unit, and the heating units are arranged at the bottom of the case and located on the two sides of the rotating unit. The utility model belongs to the technical field of aging equipment, particularly relates to a xenon lamp aging tester, and effectively solves the problems that light rays emitted by a xenon lamp light source of the xenon lamp aging tester are not uniformly distributed, and a sample is fixedly placed, so that the illumination intensity on the surface of the sample is not consistent, and the accuracy of a test result is influenced.

This utility model relates to the field of medical equipment technology, and in particular to a display screen assembly and a monitor. The display screen assembly provided by this utility model includes a first housing and a second housing arranged opposite to each other, a display screen body, an alarm light group, and a first lampshade. The second housing is connected to the first housing, and an installation gap is left between the second housing and the first housing. The display screen body is disposed on the side of the second housing away from the first housing. The alarm light group is disposed within the installation gap and includes a first lamp plate and a second lamp plate. The first lamp plate extends along the upper edge of the display screen body, and the second lamp plate extends along the side edge of the display screen body. The first lampshade is disposed at the installation gap and covers the outside of the first lamp plate and the second lamp plate. The display screen assembly provided by this utility model can realize multi-angle alarm observation, improve the visibility and reliability of alarm signals, and ensure that medical staff can detect alarm signals in a timely manner from different angles.

This invention discloses a device for detecting water seepage in building exterior walls, relating to the field of wall seepage detection technology. It includes a movable support with a movable component mounted below it. Drive supports are fixedly connected to both sides below the movable component. A drive assembly is fixedly connected to one side of the drive support, and a drive wheel is coupled to one end of the drive assembly. A clamping slide rod and a clamping spring are fixedly connected below the drive support. A clamping platform is fixedly connected below the clamping spring. One side of the clamping platform is slidably connected to the clamping slide rod, and a clamping roller is rotatably connected to the other side of the clamping platform. This invention achieves stable movement along the wall surface through a guide rope and a drive wheel assembly. The drive motor drives the two drive wheels to rotate via a differential. The drive wheels and clamping rollers clamp the guide rope under the action of the clamping spring, allowing the movable support to travel along a preset trajectory. It is suitable for curved or non-straight walls, maintains a consistent distance between the spray support and the wall surface, ensures uniform spray intensity and detection conditions, and improves the reliability of seepage detection.

The invention relates to the technical field of injection molding machines, and discloses a rubber pad injection molding machine with a waste recycling function, which comprises an equipment table, an injection molding device and a mold closing device which are fixedly mounted at the top of the equipment table, and a material mixing seat and a hopper which are arranged at the middle section of the injection molding device, the bottom of the hopper is communicated with the mixing tank, and a crushing device is fixedly mounted on the inner wall of the equipment table; through a lifting assembly and a material mixing seat structure in the waste material recycling mechanism, the effects of uniformly mixing raw materials and recycled waste materials and accurately controlling the flow speed are achieved, a lifting pipe of the lifting assembly communicates with a discharging pipe, a discharging opening of the discharging pipe is located in the center of a material mixing groove, broken waste materials and new raw materials can be fully mixed, a redundancy box and a compression assembly are matched, and the waste material recycling efficiency is improved. When discharging is not in time during waste treatment, the redundant box temporarily stores waste, the pressed assembly drives the material blocking sliding block through the connecting rope to change the size of the material conveying opening, and outflow of crushed materials is accurately adjusted.

This invention discloses an environmentally friendly and efficient dry strength agent for papermaking based on zwitterionic polymers and its preparation method, belonging to the field of papermaking chemical technology. The active ingredient of this dry strength agent is a graft copolymer of quaternized chitosan with sulfobetaine methacrylate (SBMA) and acrylamide (AM). The preparation method includes: first, reacting chitosan with 2,3-epoxypropyltrimethylammonium chloride to obtain water-soluble quaternized chitosan; then, initiating a redox initiation system to perform a graft copolymerization reaction between the quaternized chitosan and SBMA and AM, followed by precipitation and drying to obtain a solid product. This invention uses biomass chitosan as the main chain, which is green and biodegradable; the grafted SBMA side chains have an anti-polyelectrolyte effect, allowing the molecular chain to extend in high anionic interference systems such as waste paper pulp, resulting in strong anti-interference ability; simultaneously, the introduction of AM flexible segments improves paper dry strength while also enhancing flexibility and providing retention and filtration functions. Compared with existing dry strength agents, the product of this invention has superior strengthening effect, stronger adaptability, and better environmental friendliness.

The invention relates to the technical field of nerve and blood vessel intervention, in particular to a pushing-enhanced nerve and blood vessel dilation catheter which comprises a far-end rapid exchange stent mechanism, a guide wire used for pushing the far-end rapid exchange stent mechanism into nerve and blood vessels and a near-end pushing mechanism. The near-end pushing mechanism is connected with the far-end rapid exchange stent mechanism in parallel through the transition connecting part, the guide wire travels in the far-end rapid exchange stent mechanism along the outer side of the near-end pushing mechanism and is used for reducing unnecessary deformation of the guide wire, and the balloon dilatation stent is preassembled on the far-end rapid exchange stent mechanism and is connected with the near-end pushing mechanism. The problems that in the prior art, a neurovascular dilation catheter is prone to deformation and even bending in the operation process, the direction of pushing force is difficult to change, the in-place rate of a stent is reduced, meanwhile, when passing through a bent part of a blood vessel, bounce is prone to occurring, the controllability of the far end of the stent becomes poor, the possibility that the far-end blood vessel is torn and perforated is likely to be increased, and the stent cannot be damaged are solved. And the surgical risk is increased.

The double-output high-pressure double-roller ball forming machine comprises a supporting seat, a base is fixed to the lower portion of the supporting seat, a belt conveyor is arranged at the position, below the supporting seat, in the base, a main motor is installed on the upper surface of the supporting seat, and a roller is installed on the lower surface of the main motor. A main motor is arranged on the upper surface of the supporting seat, a speed reducer box is arranged on the upper surface of the supporting seat and located behind the main motor, a rack is installed on the upper surface of the supporting seat and located on one side of the main motor, a second pressing roller and a first pressing roller are arranged in the rack from left to right, and bearing seats are connected to one end of the second pressing roller and one end of the first pressing roller in the rack. An oil cylinder is further installed on the inner side of the machine frame, and a feeding port is formed in the upper surface of the machine frame. The utility model relates to the technical field of ball forming machines. According to the double-output high-pressure double-roller ball forming machine suitable for the small ball diameter, the bearing seats of the second pressing rollers are jacked through the oil cylinders, when the feeding amount is too large or hard objects exist, the second pressing rollers slide automatically, and the safety of a main machine is guaranteed.

The invention discloses a roadbed detection device and a construction method, and relates to the technical field of roadbed detection, the roadbed detection device comprises a control end, a geogrid and a detection assembly; the geogrid comprises a fixing support and a material pressing support, and when the material pressing support is installed on the fixing support, the material pressing support can move in the direction close to the fixing support. The detection assembly comprises a first detection piece and a second detection piece, and the first detection piece is used for detecting first compaction information of a contact area of the fixing support and the lower roadbed; the second detection part is used for detecting second compaction information of the filler in the grid, the detection assembly transmits the first compaction information and the second compaction information to the control end, and the control end adjusts the material pressing support to move according to the first compaction information and the second compaction information. The invention provides a roadbed detection device and a construction method, and aims to solve the technical problem that in roadbed construction, the filling state of filler at a geogrid cannot be obtained, so that the compactness of the filler inside and outside a grid formed after the filler is compacted is not uniform.