13results about How to "Not easy to pull out" patented technology

The invention provides a micro-expansion high-fluidity UHPC (Ultra High Performance Concrete) for a wet joint of an assembled structure of an underground station and a preparation method of the UHPC. The micro-expansion high-fluidity UHPC for the underground station fabricated structure wet joint is prepared from the following components in parts by weight: 620 to 940 parts of cement, 31 to 47 parts of fly ash, 31 to 47 parts of mineral powder, 52 to 238 parts of silica fume, 62 to 94 parts of quartz powder, 616 to 1354 parts of quartz sand, 2.1 to 3.2 parts of water reducing agent, 0.3 to 0.6 part of defoaming agent, 4.1 to 6.2 parts of expanding agent, 0.5 to 2 parts of steel fiber, 0.05 to 0.2 part of MICP microcapsule and 99 to 188 parts of water. According to the micro-expansion high-flow UHPC for the wet joint, concrete shrinkage can be reduced, the uniformity and strength of a mixture can be improved, the structural durability can be enhanced, and the strength and working performance of the concrete can be improved through the preparation process; the added MICP microcapsules can activate microorganisms to carry out biochemical reaction after being broken, so that deposition of calcium carbonate is triggered, microcracks are repaired, the mechanical property of the concrete is improved, and the reaction can reduce water evaporation and reduce shrinkage.

The utility model relates to a bottle cap assembly and a container, the bottle cap assembly comprises an inner plug piece, an inner cap piece, an inner sleeve piece and an outer piece, the inner plug piece is arranged on a first liquid flow opening of the inner sleeve piece, the inner cap piece is plugged on a second liquid flow opening of the inner sleeve piece, the inner sleeve piece comprises a first inner sleeve and a second inner sleeve which are made of different materials, and the outer piece is arranged in the first inner sleeve; the second inner sleeve is arranged on the peripheral face of the first inner sleeve in a surrounding mode, and the outer part is arranged on the inner cover part and the second inner sleeve in a sleeving mode and attached to the peripheral face of the second inner sleeve. According to the bottle cap assembly and the container, the first inner sleeve and the second inner sleeve are made of different materials, so that the first inner sleeve connected with the inner plug piece and the inner cap piece can be made of materials which do not affect contact with liquid, and the safety requirement is met; and the second inner sleeve connected with the outer part can be made of a material which is excellent in temperature resistance and impact resistance and is prohibited from being in contact with liquid, so that the inner sleeve part is not easy to pull out, and the bottle body or the outer part can be damaged when the inner sleeve part is forcibly pulled out, and the aim of preventing counterfeiting is fulfilled.

The utility model discloses a power supply module with a protection structure, which comprises a power supply module, a joint is fixedly arranged at the front part of the lower inner wall of the power supply module, an installation cover is fixedly arranged at the upper end of the power supply module in a penetrating manner, a plurality of first through holes are formed in the upper part of the front end of the installation cover, and a second through hole is formed in the rear part of the upper end of the installation cover. A heat dissipation device is fixedly installed on the rear portion of the left end of the power module, and a heat conduction device is fixedly installed in the middle of the left end of the power module. According to the utility model, through the installation plate and the installation groove on the installation plate, an external connection wire can be guided, and after the external connection wire passes through the installation groove and is in butt joint with the wiring terminal, the external connection wire can be effectively limited and clamped through the anti-skid sleeve arranged in the installation groove and the plurality of anti-skid salient points on the inner wall of the installation groove, so that the external connection wire is prevented from being damaged. And the upper end of the mounting groove is also provided with a silica gel ring, so that the abrasion of the connection part of the external wiring and the mounting groove can be effectively reduced.

The application discloses a kind of small measurement canister bottling pneumatic clamp, comprising: annular body, top is provided with annular cavity, O-type elastic ring is installed in the annular cavity;Cylinder inner sleeve ring, it is sleeved in the outside of annular body and is fixed with annular body;Cylinder outer sleeve ring, it is sleeved in the outside of cylinder inner sleeve ring, and there is gas cavity between cylinder inner sleeve ring and cylinder outer sleeve ring, lower sealing ring and upper sealing ring, it is respectively arranged in the upper and lower of gas cavity between cylinder inner sleeve ring and cylinder outer sleeve ring, can make gas cavity form closed movable space;Compression spring;Linkage ring assembly, it is provided with annular pressing block, linkage ring assembly is sleeved in the outside of annular body, linkage ring assembly is fixed with cylinder outer sleeve ring, and annular pressing block is pressed on O-type elastic ring;When gas pump is inflated to gas cavity, O-type elastic ring is deformed after being pressed by annular pressing block, and the inner diameter of O-type elastic ring is smaller and can hold gas tank;The application has the beneficial effects of reasonable structure, loading clamping and taking goods conveniently, and suitable for small gas tank gas filling.

This utility model discloses an aluminum foil corrosion tension testing device, comprising a DC regulated power supply, an experimental platform, a glass cup, graphite electrodes, a thermometer, a tension gauge, weights, an experimental mold mounting plate, and an aluminum foil clamping plate assembly. The experimental platform has a groove in the middle for placing the glass cup, and a heating device is installed within the groove. Two mounting plate holders are provided on the experimental platform for fixing the experimental mold mounting plate. A lifting assembly consisting of a support rod, a crossbar, a pull rope, and a carbon fiber rod is provided on the experimental platform. The experimental mold mounting plate has a rectangular through hole in the middle, with one graphite electrode arranged on each side. Clamping plate holders for fixing the aluminum foil clamping plate assembly are located at both ends of the rectangular through hole. This utility model solves the problem that existing aluminum foil testing devices cannot apply tension to aluminum foil, thereby accurately simulating the aluminum foil corrosion process on the production line, reducing the error between experimental results and production results, and improving the accuracy of experimental results.

The present invention belongs to the technical field of telescopic devices and installation and disassembly methods, and discloses a telescopic device for quickly replacing a rubber waterstop and an installation and disassembly method. Its main technical features are: it includes an anchoring mechanism, a steel section with a cavity, and a waterstop, the waterstop includes a waterstop body located in the middle and fixed rings located at both ends of the waterstop body, the fixed ring is a "C" shape with an inner cavity and an opening on the side, the fixed ring of the waterstop is located in the cavity, and a fastening steel wire is arranged in the inner cavity. The waterstop and the fastening steel wire are both pulled from one end of the cavity of the steel section to the other end, and no large construction space is required during construction. In the process of pulling in the waterstop alone, the fixed ring is deformed by force, which not only reduces the pulling resistance, but also avoids the wear of the outside of the fixed ring. After the fastening steel wire is pulled in, the fixed ring is squeezed between the fastening steel wire and the outer wall of the cavity; the sealing effect is good, and the installation and disassembly are more convenient.

The utility model discloses an umbrella-shaped barb rivet, belongs to the technical field of rivets, and solves the problem that an existing rivet is insufficient in anchoring performance. The utility model discloses an umbrella-shaped rivet which comprises a rivet rod, a rivet cap is arranged at the top of the rivet rod, a rivet head is arranged at the bottom of the rivet rod, and a plurality of barbs are arranged on the circumferential edge of the rivet head and distributed in an inverted umbrella shape. The barbs are arranged at the bottom of the rivet rod, so that the anchoring performance of the rivet is greatly improved; the multiple barbs can be scattered in the direction away from the rivet rod in the rivet pulling-out process, and therefore the multiple barbs can provide reverse anchoring force for the rivet, and the rivet cannot be easily pulled out of a base body. Due to the fact that the multiple barbs are distributed in the umbrella shape and obliquely arranged, the multiple barbs are of a spiral structure, in the rivet pulling-out process, the multiple barbs can provide rotating force for the rivet rod, when the rotating force is distributed to the horizontal direction, only axial friction is converted into rotating friction, and the friction force between the rivet rod and a base body is greatly increased.

The utility model discloses a bottle mouth structure, including export piece, support ring and lower cylinder cover, the export piece bottom is equipped with the flange along the circumference, the lower cylinder cover inside top even location block is set along the circumference, and the location block below is equipped with the locating ring, and the limiting groove is formed between the locating ring and location block, the flange is fitted in the limiting groove, the support ring is sleeved in the lower cylinder cover, and the top of support ring is equidistantly equipped with the inverted tooth along the circumference, and the top surface of inverted tooth is in contact with the flange bottom surface, and the lower cylinder cover inside bottom is equipped with the limiting strip, and the support ring bottom is in contact with the limiting strip. The utility model discloses the support ring adopts PC or PA66 material to make, and it is not easy to pull out from the wine bottle under high temperature, thereby reaches the anti -theft, the anti -fake function, and the export piece and support ring structure are simple, and the die manufacturing difficulty is reduced, and the die cost can be effectively reduced.

The present invention discloses a sealing device for a motor vehicle, comprising a sealing part and an opener. The sealing part fixes a license plate on the vehicle, and the opener is used to remove the sealing part. The sealing part comprises a top cover, a bolt, and a base. The bolt and the base are fastened by threaded cooperation. The top cover is arranged on the outside of the bolt screw head to cover the screw head part, thereby reducing external interference to the screw head part. A movable arc surface is also arranged outside the bolt. When a magnetic block at the edge of the movable arc surface is affected by an external magnetic field, it will leave the screw rod part of the bolt and expand. The expanded movable arc surface is located in the hollow part of the base, so it will be stuck and can only be opened by the opener. After the opener is extended into the blind hole of the base, the movable arc surface is retracted by the magnetic field generated by the coil, so that it can be easily taken out without affecting the disassembly during normal use.

This utility model discloses a magnet assembly structure for a pod-type electronic cigarette, comprising a cartridge and a main unit. The cartridge has a first groove at its bottom, into which a first magnet is embedded. A second groove is located at the bottom of the insertion cavity, into which a second magnet is embedded. The first and second magnets are magnetically attracted to each other. The first and second grooves have identical structures. The sidewall of the first groove has multiple raised ribs perpendicular to its bottom. One end of each rib near the groove opening is beveled, serving as a guide for the insertion of the first magnet. The first magnet is interference-fitted to the raised ribs. A gap is formed between the sidewall of the first magnet and the sidewall of the first groove, filled with glue, thus firmly bonding the first magnet to the first groove. Both the first and second grooves have protrusions at their bottoms, forming glue reservoirs, ensuring glue adhesion around the magnet and ensuring a secure and reliable magnet assembly.

The utility model relates to a van-type semitrailer, and belongs to the technical field of semitrailers, the van-type semitrailer comprises a vehicle body and an oil tank, the oil tank is mounted on one side of the vehicle body, a partition plate is arranged in the oil tank, and an oil storage chamber and an oil-free chamber for an oil gun to insert are formed in the oil tank through the partition plate; a one-way valve enabling oil in the oil gun to enter the oil storage cavity is arranged on the partition plate. The oil tank of the semitrailer has the advantage that oil in the oil tank of the semitrailer is not prone to being stolen.

This invention relates to the field of road engineering materials and solid waste resource utilization technology, specifically to basalt fiber reinforced coal gangue asphalt mixture, its preparation method, and its application. By weight, it comprises 100 parts activated coal gangue aggregate, 4-7 parts asphalt binder, 0.2-0.5 parts basalt fiber, 1-3 parts hydrated lime, and 0.3-1.5 parts silane coupling component. The coal gangue is calcined at 550-850°C to remove hydroxyl groups, transforming its surface into a slightly alkaline amorphous silica-alumina active surface. Utilizing the silica-alumina homology between the coal gangue and basalt fiber, the aggregate and fiber are covalently bonded at the contact interface via Si-O-Si and Si-O-Al bonds to form a continuously stressed aggregate-fiber-asphalt interface network. The hydrated lime provides anti-stripping, alkaline activation, and calcium node properties, achieving solid waste resource utilization while maintaining a freeze-thaw splitting strength ratio of over 90% and a dynamic stability of over 6000 cycles / mm.

The utility model discloses a greenhouse booth support device, it includes arcuate pole and two vertical support pole, both ends of arcuate pole all are fixedly installed and have bolt no.