10results about How to "With limit function" patented technology

The utility model discloses a high-power optical fiber combiner, which comprises a base, a cover plate and a U-shaped block, the cover plate is fixedly connected with the base through a bolt, the U-shaped block is fixedly arranged at the bottom of the base, the two sides of the front side of the base are fixedly connected with L-shaped plates, the bottoms of the front sides of the L-shaped plates are fixedly connected with first limiting plates, and the first limiting plates are fixedly connected with second limiting plates. A sliding groove is formed in the front side of the L-shaped plate, and a second limiting plate is slidably connected to the inner wall of the sliding groove. Through the arrangement of the first limiting plate, the second limiting plate, the limiting groove and the adjusting assembly, the adjusting assembly can effectively drive the second limiting plate to be adjusted downwards, the first limiting plate and the second limiting plate are attached, the limiting groove can limit and fix optical fibers, and the problem that after multiple sets of optical fibers are connected, due to the fact that a limiting structure is not arranged, the optical fibers cannot be limited and fixed is solved. The problem that the optical fiber beam combiner cannot be normally used due to the fact that the optical fiber beam combiner is broken due to the fact that the optical fiber beam combiner is pulled by external force in the installation or maintenance process of the optical fiber beam combiner is solved.

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 discloses a combined architectural design decoration flower stand with a sunshade component, comprising a transverse plate, both sides of the bottom end of the transverse plate are provided with support frames, one side of each support frame is provided with a placing plate, the inside of each placing plate is provided with a limiting mechanism, the top end of each placing plate is provided with a moving groove, and the top end of each moving groove is provided with a sunshade component. And clamping blocks are installed on the two sides of the top end of the containing plate correspondingly, fixing blocks are installed at the positions, on one sides of the clamping blocks, of the top end of the containing plate correspondingly, and water storage tanks are installed at the positions, on one sides of the supporting frames, of the bottom end of the containing plate correspondingly. According to the device, the driving shaft is screwed to drive the connecting block to do horizontal movement under the action of the moving block, the stored sunshade net is unfolded while the connecting block does horizontal movement, flower and green plants placed on the placing plate can be conveniently subjected to sunshade treatment through the operation, exposure of sunlight to the flower and green plants is reduced, and therefore the survival rate of the flower and green plants is increased; and the replacement cost is reduced.

The utility model discloses a coal belt conveyor monitoring device with a limiting function, which comprises a first supporting table and a first mounting seat, and the first mounting seat is connected to one side of the first supporting table. The rotary knob is rotated to drive the first threaded rod to rotate, the movable plate is driven to ascend under the threaded connection effect, the movable plate synchronously drives the connecting plate to ascend, so that the tops of the two hinge rods move upwards, and the movable block is further limited by the connecting piece between the movable block and the second mounting base; the movable blocks are pulled by the hinge rods to synchronously move inwards, meanwhile, multiple sets of second fixing pins at the bottom synchronously ascend, limiting of the supporting rods and the supporting plates can be synchronously canceled, and at the moment, the monitoring element located below the belt can be pulled out to be maintained by canceling fixing of the first mounting base and the two sets of supporting tables; operation is simple, use is convenient, and working efficiency is effectively improved.

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.

The utility model discloses rolling equipment with a limiting function for PVC (polyvinyl chloride) film production. The rolling equipment comprises a base, a rolling mechanism and a limiting mechanism, a tensioning mechanism is arranged in the middle of the base, the front end of the left side wall of the base is rotationally connected with a flange seat, the right side face of the flange seat is connected with a winding shaft through a bolt, and an arc-shaped barrel of the winding shaft is provided with limiting grooves which are evenly distributed; the winding mechanism is arranged on the rear side of the interior of the base and the left side face of the base, and the front end of the winding mechanism is fixedly connected with the left end of the flange base; the limiting mechanism comprises a sliding barrel, sliding barrel limiting plates and a rolling limiting plate, the sliding barrel is slidably connected into the rolling shaft, and the sliding barrel limiting plates which are evenly distributed are arranged on the outer arc face of the sliding barrel. The edge of the PVC film winding drum with any width is more tidy, and meanwhile the wound PVC winding drum is more compact.

The utility model relates to the technical field of lighting lamps, in particular to an underground lamp with good waterproof sealing performance. Comprising a lamp holder, an embedded seat fixedly connected to the bottom of the lamp holder, an annular partition plate fixedly connected to the inner bottom wall of the lamp holder, a lampshade slidably connected to the lamp holder, a sealing gasket fixedly connected to the inner bottom wall of the lamp holder, a plurality of lamp beads arranged in the lamp holder and two limiting mechanisms arranged on the lamp holder. The two limiting assemblies are arranged on the lamp holder, and each limiting mechanism comprises a box body fixedly connected to the lamp holder. According to the underground lamp with the good waterproof sealing performance, the limiting mechanism is arranged, so that the underground lamp has a limiting function, the effect of limiting the lampshade is achieved, the lampshade is conveniently and rapidly disassembled, the interior of the lamp holder is conveniently maintained, meanwhile, the sealing performance between the lampshade and the lamp holder is improved by extruding a sealing gasket, and the service life of the underground lamp is prolonged. And therefore, the service life of the lamp holder is prolonged, a user can use the underground lamp conveniently, and the practicability of the underground lamp is improved.