5results about How to "With limit function" patented technology

The utility model relates to the technical field of metro track construction, in particular to a metro tunnel transition section pouring transport pump truck device which comprises a first transverse rod and a traction plate, a second transverse rod is welded to the bottom of the first transverse rod, and first longitudinal rods are welded to the opposite sides of the first transverse rod. Through cooperation of the first transverse rod, the traction plate, the second transverse rod, the first longitudinal rod, the connecting frame, the ground pump, the limiting mechanism, the limiting frame, the support and the mixing tank, the concrete mixing device has the advantages that the construction efficiency is improved, the labor intensity is reduced, track disturbance and concrete waste are reduced, and the construction period is shortened; the traction plate drives the first longitudinal rod to walk, when the ground pump and the mixing tank reach a pouring site, concrete in the mixing tank is poured into the ground pump, then a user pushes the ground pump to move on the surface of the rail through the first walking wheel, and the ground pump pours the concrete.

The utility model discloses an air purifier belongs to air purification equipment technical field. It includes: air inlet pipe and air outlet pipe, both upside down and connect, and both the top surface, bottom surface of air purifier structure formed after connecting are closed surface, the top surface of air outlet pipe is provided with the communicating port, and the inner chamber of air inlet pipe is communicated with the air outlet pipe through the communicating port, the circumferential side wall of air inlet pipe is provided with a plurality of air inlet face, and every air inlet face is provided with air inlet, the air outlet face is formed on the opposite setting two sides of air outlet pipe respectively, and every air outlet face is provided with air outlet, the filter screen is set in air inlet pipe and covers in communicating port. Set up air inlet and air outlet on every side wall of air inlet pipe and air outlet pipe respectively, can handle the air in larger range fast, realizes the uniform suction and high -efficient discharge of air, effectively promotes the air circulation times in unit time, thereby significantly enhances purification efficiency.

The utility model discloses a kind of plastic pallets with limiting function, including tray body, detachable limit frame is equipped on the tray body upper end face, the limit frame is provided with multiple, multiple detachable settings are between the limit frame, multiple limit frame lower end face four corners are equipped with mounting block, the tray body and multiple limit frame upper end face four corners are all opened with mounting groove corresponding the mounting block, the tray body left and right end face front and back sides are all opened with locking hole corresponding the mounting groove, multiple locking hole interiors are all detachably equipped with locking rod, same side two locking rods outer end are connected with locking plate, multiple mounting blocks are all opened with through hole corresponding locking rod, by the design of limit frame, different specifications of stacking can provide firm lateral support and fence protection, guarantee the stability and security of goods stacking.

The utility model relates to the technical field of trundle devices, in particular to a double-precision-bearing orthogonal universal mute trundle which comprises a plastic-coated bearing wheel, a support, a shaft pin, a shaft clamp and a flat gasket, two supporting plates are arranged at the bottom of the support and are oppositely arranged, a mounting groove is formed between the two supporting plates, and the shaft pin is arranged in the mounting groove. The plastic-coated bearing wheel is fixed in the mounting groove through a flat gasket, a shaft pin and a shaft clamp; a limiting switch is arranged on the face, away from the plastic-coated bearing wheel, of one supporting plate and used for limiting movement of the plastic-coated bearing wheel. The caster not only has a limiting function and avoids non-directional movement of the bucket disc, but also has the effects of smooth sliding, no noise and the like due to the high-precision bearing, and the practical performance of the frequency spectrum water drinking equipment is greatly improved.

The utility model relates to the technical field of living furniture, in particular to a bed sheet displacement prevention skeleton and bed frame, which comprises a skeleton body, a bed sheet displacement prevention device, a bed sheet displacement prevention device, a bed sheet displacement prevention device and a mattress displacement prevention device, the bed sheet limiting pressing plates are arranged along the edge position of the skeleton body and are rotationally connected with the skeleton body; the bed sheet limiting pressing plate has the clamping state that the bed sheet limiting pressing plate rotates towards the side face close to the skeleton body till the bed sheet limiting pressing plate is matched with the side face of the skeleton body to clamp the edge position of the bed sheet. In the loosening state, the bed sheet can rotate towards the side face away from the skeleton body until the edge position of the bed sheet is released. The bed sheet displacement prevention skeleton and the bed frame provided by the utility model have a bed sheet limiting function, so that the problem that a bed sheet is easy to slide and displace is solved.